1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/slab.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/sched.h>
38 #include <linux/skbuff.h>
39 #include <linux/netdevice.h>
40 #include <linux/wireless.h>
41 #include <linux/firmware.h>
42 #include <linux/etherdevice.h>
43 #include <linux/if_arp.h>
45 #include <net/ieee80211_radiotap.h>
46 #include <net/mac80211.h>
48 #include <asm/div64.h>
50 #define DRV_NAME "iwl3945"
53 #include "iwl-3945-fh.h"
54 #include "iwl-commands.h"
58 #include "iwl-helpers.h"
60 #include "iwl-spectrum.h"
63 * module name, copyright, version, etc.
66 #define DRV_DESCRIPTION \
67 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
69 #ifdef CONFIG_IWLWIFI_DEBUG
76 * add "s" to indicate spectrum measurement included.
77 * we add it here to be consistent with previous releases in which
78 * this was configurable.
80 #define DRV_VERSION IWLWIFI_VERSION VD "s"
81 #define DRV_COPYRIGHT "Copyright(c) 2003-2010 Intel Corporation"
82 #define DRV_AUTHOR "<ilw@linux.intel.com>"
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
87 MODULE_LICENSE("GPL");
89 /* module parameters */
90 struct iwl_mod_params iwl3945_mod_params = {
93 /* the rest are 0 by default */
97 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
98 * @priv: eeprom and antenna fields are used to determine antenna flags
100 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
101 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
103 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
104 * IWL_ANTENNA_MAIN - Force MAIN antenna
105 * IWL_ANTENNA_AUX - Force AUX antenna
107 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
109 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
111 switch (iwl3945_mod_params.antenna) {
112 case IWL_ANTENNA_DIVERSITY:
115 case IWL_ANTENNA_MAIN:
116 if (eeprom->antenna_switch_type)
117 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
118 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
120 case IWL_ANTENNA_AUX:
121 if (eeprom->antenna_switch_type)
122 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
123 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
126 /* bad antenna selector value */
127 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
128 iwl3945_mod_params.antenna);
130 return 0; /* "diversity" is default if error */
133 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
134 struct ieee80211_key_conf *keyconf,
138 __le16 key_flags = 0;
141 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
142 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
144 if (sta_id == priv->hw_params.bcast_sta_id)
145 key_flags |= STA_KEY_MULTICAST_MSK;
147 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
148 keyconf->hw_key_idx = keyconf->keyidx;
149 key_flags &= ~STA_KEY_FLG_INVALID;
151 spin_lock_irqsave(&priv->sta_lock, flags);
152 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
153 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
154 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
157 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
160 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
161 == STA_KEY_FLG_NO_ENC)
162 priv->stations[sta_id].sta.key.key_offset =
163 iwl_get_free_ucode_key_index(priv);
164 /* else, we are overriding an existing key => no need to allocated room
167 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
168 "no space for a new key");
170 priv->stations[sta_id].sta.key.key_flags = key_flags;
171 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
172 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
174 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
176 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
178 spin_unlock_irqrestore(&priv->sta_lock, flags);
183 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
184 struct ieee80211_key_conf *keyconf,
190 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
191 struct ieee80211_key_conf *keyconf,
197 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
200 struct iwl_addsta_cmd sta_cmd;
202 spin_lock_irqsave(&priv->sta_lock, flags);
203 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
204 memset(&priv->stations[sta_id].sta.key, 0,
205 sizeof(struct iwl4965_keyinfo));
206 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
207 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
208 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
209 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
210 spin_unlock_irqrestore(&priv->sta_lock, flags);
212 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
213 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
216 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
217 struct ieee80211_key_conf *keyconf, u8 sta_id)
221 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
223 switch (keyconf->alg) {
225 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
228 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
231 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
234 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
238 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
239 keyconf->alg, keyconf->keylen, keyconf->keyidx,
245 static int iwl3945_remove_static_key(struct iwl_priv *priv)
247 int ret = -EOPNOTSUPP;
252 static int iwl3945_set_static_key(struct iwl_priv *priv,
253 struct ieee80211_key_conf *key)
255 if (key->alg == ALG_WEP)
258 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
262 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
264 struct list_head *element;
266 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
269 while (!list_empty(&priv->free_frames)) {
270 element = priv->free_frames.next;
272 kfree(list_entry(element, struct iwl3945_frame, list));
273 priv->frames_count--;
276 if (priv->frames_count) {
277 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
279 priv->frames_count = 0;
283 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
285 struct iwl3945_frame *frame;
286 struct list_head *element;
287 if (list_empty(&priv->free_frames)) {
288 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
290 IWL_ERR(priv, "Could not allocate frame!\n");
294 priv->frames_count++;
298 element = priv->free_frames.next;
300 return list_entry(element, struct iwl3945_frame, list);
303 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
305 memset(frame, 0, sizeof(*frame));
306 list_add(&frame->list, &priv->free_frames);
309 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
310 struct ieee80211_hdr *hdr,
314 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
315 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
316 (priv->iw_mode != NL80211_IFTYPE_AP)))
319 if (priv->ibss_beacon->len > left)
322 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
324 return priv->ibss_beacon->len;
327 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
329 struct iwl3945_frame *frame;
330 unsigned int frame_size;
334 frame = iwl3945_get_free_frame(priv);
337 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
342 rate = iwl_rate_get_lowest_plcp(priv);
344 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
346 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
349 iwl3945_free_frame(priv, frame);
354 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
356 if (priv->_3945.shared_virt)
357 dma_free_coherent(&priv->pci_dev->dev,
358 sizeof(struct iwl3945_shared),
359 priv->_3945.shared_virt,
360 priv->_3945.shared_phys);
363 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
364 struct ieee80211_tx_info *info,
365 struct iwl_device_cmd *cmd,
366 struct sk_buff *skb_frag,
369 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
370 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
372 switch (keyinfo->alg) {
374 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
375 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
376 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
383 tx_cmd->sec_ctl = TX_CMD_SEC_WEP |
384 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
386 if (keyinfo->keylen == 13)
387 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
389 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
391 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
392 "with key %d\n", info->control.hw_key->hw_key_idx);
396 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
402 * handle build REPLY_TX command notification.
404 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
405 struct iwl_device_cmd *cmd,
406 struct ieee80211_tx_info *info,
407 struct ieee80211_hdr *hdr, u8 std_id)
409 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
410 __le32 tx_flags = tx_cmd->tx_flags;
411 __le16 fc = hdr->frame_control;
413 tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
414 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
415 tx_flags |= TX_CMD_FLG_ACK_MSK;
416 if (ieee80211_is_mgmt(fc))
417 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
418 if (ieee80211_is_probe_resp(fc) &&
419 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
420 tx_flags |= TX_CMD_FLG_TSF_MSK;
422 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
423 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
426 tx_cmd->sta_id = std_id;
427 if (ieee80211_has_morefrags(fc))
428 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
430 if (ieee80211_is_data_qos(fc)) {
431 u8 *qc = ieee80211_get_qos_ctl(hdr);
432 tx_cmd->tid_tspec = qc[0] & 0xf;
433 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
435 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
438 priv->cfg->ops->utils->rts_tx_cmd_flag(info, &tx_flags);
440 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
441 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
443 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
444 if (ieee80211_is_mgmt(fc)) {
445 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
446 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
448 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
450 tx_cmd->timeout.pm_frame_timeout = 0;
453 tx_cmd->driver_txop = 0;
454 tx_cmd->tx_flags = tx_flags;
455 tx_cmd->next_frame_len = 0;
459 * start REPLY_TX command process
461 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
463 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
464 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
465 struct iwl3945_tx_cmd *tx_cmd;
466 struct iwl_tx_queue *txq = NULL;
467 struct iwl_queue *q = NULL;
468 struct iwl_device_cmd *out_cmd;
469 struct iwl_cmd_meta *out_meta;
470 dma_addr_t phys_addr;
471 dma_addr_t txcmd_phys;
472 int txq_id = skb_get_queue_mapping(skb);
473 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
479 u8 wait_write_ptr = 0;
482 spin_lock_irqsave(&priv->lock, flags);
483 if (iwl_is_rfkill(priv)) {
484 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
488 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
489 IWL_ERR(priv, "ERROR: No TX rate available.\n");
493 unicast = !is_multicast_ether_addr(hdr->addr1);
496 fc = hdr->frame_control;
498 #ifdef CONFIG_IWLWIFI_DEBUG
499 if (ieee80211_is_auth(fc))
500 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
501 else if (ieee80211_is_assoc_req(fc))
502 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
503 else if (ieee80211_is_reassoc_req(fc))
504 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
507 spin_unlock_irqrestore(&priv->lock, flags);
509 hdr_len = ieee80211_hdrlen(fc);
511 /* Find index into station table for destination station */
512 sta_id = iwl_sta_id_or_broadcast(priv, info->control.sta);
513 if (sta_id == IWL_INVALID_STATION) {
514 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
519 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
521 if (ieee80211_is_data_qos(fc)) {
522 u8 *qc = ieee80211_get_qos_ctl(hdr);
523 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
524 if (unlikely(tid >= MAX_TID_COUNT))
528 /* Descriptor for chosen Tx queue */
529 txq = &priv->txq[txq_id];
532 if ((iwl_queue_space(q) < q->high_mark))
535 spin_lock_irqsave(&priv->lock, flags);
537 idx = get_cmd_index(q, q->write_ptr, 0);
539 /* Set up driver data for this TFD */
540 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
541 txq->txb[q->write_ptr].skb[0] = skb;
543 /* Init first empty entry in queue's array of Tx/cmd buffers */
544 out_cmd = txq->cmd[idx];
545 out_meta = &txq->meta[idx];
546 tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
547 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
548 memset(tx_cmd, 0, sizeof(*tx_cmd));
551 * Set up the Tx-command (not MAC!) header.
552 * Store the chosen Tx queue and TFD index within the sequence field;
553 * after Tx, uCode's Tx response will return this value so driver can
554 * locate the frame within the tx queue and do post-tx processing.
556 out_cmd->hdr.cmd = REPLY_TX;
557 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
558 INDEX_TO_SEQ(q->write_ptr)));
560 /* Copy MAC header from skb into command buffer */
561 memcpy(tx_cmd->hdr, hdr, hdr_len);
564 if (info->control.hw_key)
565 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
567 /* TODO need this for burst mode later on */
568 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
570 /* set is_hcca to 0; it probably will never be implemented */
571 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
573 /* Total # bytes to be transmitted */
575 tx_cmd->len = cpu_to_le16(len);
577 iwl_dbg_log_tx_data_frame(priv, len, hdr);
578 iwl_update_stats(priv, true, fc, len);
579 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
580 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
582 if (!ieee80211_has_morefrags(hdr->frame_control)) {
583 txq->need_update = 1;
586 txq->need_update = 0;
589 IWL_DEBUG_TX(priv, "sequence nr = 0X%x\n",
590 le16_to_cpu(out_cmd->hdr.sequence));
591 IWL_DEBUG_TX(priv, "tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags));
592 iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
593 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
594 ieee80211_hdrlen(fc));
597 * Use the first empty entry in this queue's command buffer array
598 * to contain the Tx command and MAC header concatenated together
599 * (payload data will be in another buffer).
600 * Size of this varies, due to varying MAC header length.
601 * If end is not dword aligned, we'll have 2 extra bytes at the end
602 * of the MAC header (device reads on dword boundaries).
603 * We'll tell device about this padding later.
605 len = sizeof(struct iwl3945_tx_cmd) +
606 sizeof(struct iwl_cmd_header) + hdr_len;
609 len = (len + 3) & ~3;
616 /* Physical address of this Tx command's header (not MAC header!),
617 * within command buffer array. */
618 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
619 len, PCI_DMA_TODEVICE);
620 /* we do not map meta data ... so we can safely access address to
621 * provide to unmap command*/
622 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
623 pci_unmap_len_set(out_meta, len, len);
625 /* Add buffer containing Tx command and MAC(!) header to TFD's
627 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
628 txcmd_phys, len, 1, 0);
631 /* Set up TFD's 2nd entry to point directly to remainder of skb,
632 * if any (802.11 null frames have no payload). */
633 len = skb->len - hdr_len;
635 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
636 len, PCI_DMA_TODEVICE);
637 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
643 /* Tell device the write index *just past* this latest filled TFD */
644 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
645 iwl_txq_update_write_ptr(priv, txq);
646 spin_unlock_irqrestore(&priv->lock, flags);
648 if ((iwl_queue_space(q) < q->high_mark)
649 && priv->mac80211_registered) {
650 if (wait_write_ptr) {
651 spin_lock_irqsave(&priv->lock, flags);
652 txq->need_update = 1;
653 iwl_txq_update_write_ptr(priv, txq);
654 spin_unlock_irqrestore(&priv->lock, flags);
657 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
663 spin_unlock_irqrestore(&priv->lock, flags);
668 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
669 #define BEACON_TIME_MASK_HIGH 0xFF000000
670 #define TIME_UNIT 1024
673 * extended beacon time format
674 * time in usec will be changed into a 32-bit value in 8:24 format
675 * the high 1 byte is the beacon counts
676 * the lower 3 bytes is the time in usec within one beacon interval
679 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
683 u32 interval = beacon_interval * 1024;
685 if (!interval || !usec)
688 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
689 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
691 return (quot << 24) + rem;
694 /* base is usually what we get from ucode with each received frame,
695 * the same as HW timer counter counting down
698 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
700 u32 base_low = base & BEACON_TIME_MASK_LOW;
701 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
702 u32 interval = beacon_interval * TIME_UNIT;
703 u32 res = (base & BEACON_TIME_MASK_HIGH) +
704 (addon & BEACON_TIME_MASK_HIGH);
706 if (base_low > addon_low)
707 res += base_low - addon_low;
708 else if (base_low < addon_low) {
709 res += interval + base_low - addon_low;
714 return cpu_to_le32(res);
717 static int iwl3945_get_measurement(struct iwl_priv *priv,
718 struct ieee80211_measurement_params *params,
721 struct iwl_spectrum_cmd spectrum;
722 struct iwl_rx_packet *pkt;
723 struct iwl_host_cmd cmd = {
724 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
725 .data = (void *)&spectrum,
726 .flags = CMD_WANT_SKB,
728 u32 add_time = le64_to_cpu(params->start_time);
730 int spectrum_resp_status;
731 int duration = le16_to_cpu(params->duration);
733 if (iwl_is_associated(priv))
735 iwl3945_usecs_to_beacons(
736 le64_to_cpu(params->start_time) - priv->_3945.last_tsf,
737 le16_to_cpu(priv->rxon_timing.beacon_interval));
739 memset(&spectrum, 0, sizeof(spectrum));
741 spectrum.channel_count = cpu_to_le16(1);
743 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
744 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
745 cmd.len = sizeof(spectrum);
746 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
748 if (iwl_is_associated(priv))
749 spectrum.start_time =
750 iwl3945_add_beacon_time(priv->_3945.last_beacon_time,
752 le16_to_cpu(priv->rxon_timing.beacon_interval));
754 spectrum.start_time = 0;
756 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
757 spectrum.channels[0].channel = params->channel;
758 spectrum.channels[0].type = type;
759 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
760 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
761 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
763 rc = iwl_send_cmd_sync(priv, &cmd);
767 pkt = (struct iwl_rx_packet *)cmd.reply_page;
768 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
769 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
773 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
774 switch (spectrum_resp_status) {
775 case 0: /* Command will be handled */
776 if (pkt->u.spectrum.id != 0xff) {
777 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
779 priv->measurement_status &= ~MEASUREMENT_READY;
781 priv->measurement_status |= MEASUREMENT_ACTIVE;
785 case 1: /* Command will not be handled */
790 iwl_free_pages(priv, cmd.reply_page);
795 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
796 struct iwl_rx_mem_buffer *rxb)
798 struct iwl_rx_packet *pkt = rxb_addr(rxb);
799 struct iwl_alive_resp *palive;
800 struct delayed_work *pwork;
802 palive = &pkt->u.alive_frame;
804 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
806 palive->is_valid, palive->ver_type,
807 palive->ver_subtype);
809 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
810 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
811 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
812 sizeof(struct iwl_alive_resp));
813 pwork = &priv->init_alive_start;
815 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
816 memcpy(&priv->card_alive, &pkt->u.alive_frame,
817 sizeof(struct iwl_alive_resp));
818 pwork = &priv->alive_start;
819 iwl3945_disable_events(priv);
822 /* We delay the ALIVE response by 5ms to
823 * give the HW RF Kill time to activate... */
824 if (palive->is_valid == UCODE_VALID_OK)
825 queue_delayed_work(priv->workqueue, pwork,
826 msecs_to_jiffies(5));
828 IWL_WARN(priv, "uCode did not respond OK.\n");
831 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
832 struct iwl_rx_mem_buffer *rxb)
834 #ifdef CONFIG_IWLWIFI_DEBUG
835 struct iwl_rx_packet *pkt = rxb_addr(rxb);
838 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
841 static void iwl3945_bg_beacon_update(struct work_struct *work)
843 struct iwl_priv *priv =
844 container_of(work, struct iwl_priv, beacon_update);
845 struct sk_buff *beacon;
847 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
848 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
851 IWL_ERR(priv, "update beacon failed\n");
855 mutex_lock(&priv->mutex);
856 /* new beacon skb is allocated every time; dispose previous.*/
857 if (priv->ibss_beacon)
858 dev_kfree_skb(priv->ibss_beacon);
860 priv->ibss_beacon = beacon;
861 mutex_unlock(&priv->mutex);
863 iwl3945_send_beacon_cmd(priv);
866 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
867 struct iwl_rx_mem_buffer *rxb)
869 #ifdef CONFIG_IWLWIFI_DEBUG
870 struct iwl_rx_packet *pkt = rxb_addr(rxb);
871 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
872 u8 rate = beacon->beacon_notify_hdr.rate;
874 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
875 "tsf %d %d rate %d\n",
876 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
877 beacon->beacon_notify_hdr.failure_frame,
878 le32_to_cpu(beacon->ibss_mgr_status),
879 le32_to_cpu(beacon->high_tsf),
880 le32_to_cpu(beacon->low_tsf), rate);
883 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
884 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
885 queue_work(priv->workqueue, &priv->beacon_update);
888 /* Handle notification from uCode that card's power state is changing
889 * due to software, hardware, or critical temperature RFKILL */
890 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
891 struct iwl_rx_mem_buffer *rxb)
893 struct iwl_rx_packet *pkt = rxb_addr(rxb);
894 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
895 unsigned long status = priv->status;
897 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
898 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
899 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
901 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
902 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
904 if (flags & HW_CARD_DISABLED)
905 set_bit(STATUS_RF_KILL_HW, &priv->status);
907 clear_bit(STATUS_RF_KILL_HW, &priv->status);
910 iwl_scan_cancel(priv);
912 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
913 test_bit(STATUS_RF_KILL_HW, &priv->status)))
914 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
915 test_bit(STATUS_RF_KILL_HW, &priv->status));
917 wake_up_interruptible(&priv->wait_command_queue);
921 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
923 * Setup the RX handlers for each of the reply types sent from the uCode
926 * This function chains into the hardware specific files for them to setup
927 * any hardware specific handlers as well.
929 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
931 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
932 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
933 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
934 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
935 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
936 iwl_rx_spectrum_measure_notif;
937 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
938 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
939 iwl_rx_pm_debug_statistics_notif;
940 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
943 * The same handler is used for both the REPLY to a discrete
944 * statistics request from the host as well as for the periodic
945 * statistics notifications (after received beacons) from the uCode.
947 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_reply_statistics;
948 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
950 iwl_setup_rx_scan_handlers(priv);
951 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
953 /* Set up hardware specific Rx handlers */
954 iwl3945_hw_rx_handler_setup(priv);
957 /************************** RX-FUNCTIONS ****************************/
959 * Rx theory of operation
961 * The host allocates 32 DMA target addresses and passes the host address
962 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
966 * The host/firmware share two index registers for managing the Rx buffers.
968 * The READ index maps to the first position that the firmware may be writing
969 * to -- the driver can read up to (but not including) this position and get
971 * The READ index is managed by the firmware once the card is enabled.
973 * The WRITE index maps to the last position the driver has read from -- the
974 * position preceding WRITE is the last slot the firmware can place a packet.
976 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
979 * During initialization, the host sets up the READ queue position to the first
980 * INDEX position, and WRITE to the last (READ - 1 wrapped)
982 * When the firmware places a packet in a buffer, it will advance the READ index
983 * and fire the RX interrupt. The driver can then query the READ index and
984 * process as many packets as possible, moving the WRITE index forward as it
985 * resets the Rx queue buffers with new memory.
987 * The management in the driver is as follows:
988 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
989 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
990 * to replenish the iwl->rxq->rx_free.
991 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
992 * iwl->rxq is replenished and the READ INDEX is updated (updating the
993 * 'processed' and 'read' driver indexes as well)
994 * + A received packet is processed and handed to the kernel network stack,
995 * detached from the iwl->rxq. The driver 'processed' index is updated.
996 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
997 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
998 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
999 * were enough free buffers and RX_STALLED is set it is cleared.
1004 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1005 * iwl3945_rx_queue_restock
1006 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1007 * queue, updates firmware pointers, and updates
1008 * the WRITE index. If insufficient rx_free buffers
1009 * are available, schedules iwl3945_rx_replenish
1011 * -- enable interrupts --
1012 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1013 * READ INDEX, detaching the SKB from the pool.
1014 * Moves the packet buffer from queue to rx_used.
1015 * Calls iwl3945_rx_queue_restock to refill any empty
1022 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1024 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1025 dma_addr_t dma_addr)
1027 return cpu_to_le32((u32)dma_addr);
1031 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1033 * If there are slots in the RX queue that need to be restocked,
1034 * and we have free pre-allocated buffers, fill the ranks as much
1035 * as we can, pulling from rx_free.
1037 * This moves the 'write' index forward to catch up with 'processed', and
1038 * also updates the memory address in the firmware to reference the new
1041 static void iwl3945_rx_queue_restock(struct iwl_priv *priv)
1043 struct iwl_rx_queue *rxq = &priv->rxq;
1044 struct list_head *element;
1045 struct iwl_rx_mem_buffer *rxb;
1046 unsigned long flags;
1049 spin_lock_irqsave(&rxq->lock, flags);
1050 write = rxq->write & ~0x7;
1051 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1052 /* Get next free Rx buffer, remove from free list */
1053 element = rxq->rx_free.next;
1054 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1057 /* Point to Rx buffer via next RBD in circular buffer */
1058 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1059 rxq->queue[rxq->write] = rxb;
1060 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1063 spin_unlock_irqrestore(&rxq->lock, flags);
1064 /* If the pre-allocated buffer pool is dropping low, schedule to
1066 if (rxq->free_count <= RX_LOW_WATERMARK)
1067 queue_work(priv->workqueue, &priv->rx_replenish);
1070 /* If we've added more space for the firmware to place data, tell it.
1071 * Increment device's write pointer in multiples of 8. */
1072 if ((rxq->write_actual != (rxq->write & ~0x7))
1073 || (abs(rxq->write - rxq->read) > 7)) {
1074 spin_lock_irqsave(&rxq->lock, flags);
1075 rxq->need_update = 1;
1076 spin_unlock_irqrestore(&rxq->lock, flags);
1077 iwl_rx_queue_update_write_ptr(priv, rxq);
1082 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1084 * When moving to rx_free an SKB is allocated for the slot.
1086 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1087 * This is called as a scheduled work item (except for during initialization)
1089 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1091 struct iwl_rx_queue *rxq = &priv->rxq;
1092 struct list_head *element;
1093 struct iwl_rx_mem_buffer *rxb;
1095 unsigned long flags;
1096 gfp_t gfp_mask = priority;
1099 spin_lock_irqsave(&rxq->lock, flags);
1101 if (list_empty(&rxq->rx_used)) {
1102 spin_unlock_irqrestore(&rxq->lock, flags);
1105 spin_unlock_irqrestore(&rxq->lock, flags);
1107 if (rxq->free_count > RX_LOW_WATERMARK)
1108 gfp_mask |= __GFP_NOWARN;
1110 if (priv->hw_params.rx_page_order > 0)
1111 gfp_mask |= __GFP_COMP;
1113 /* Alloc a new receive buffer */
1114 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1116 if (net_ratelimit())
1117 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1118 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1120 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1121 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1123 /* We don't reschedule replenish work here -- we will
1124 * call the restock method and if it still needs
1125 * more buffers it will schedule replenish */
1129 spin_lock_irqsave(&rxq->lock, flags);
1130 if (list_empty(&rxq->rx_used)) {
1131 spin_unlock_irqrestore(&rxq->lock, flags);
1132 __free_pages(page, priv->hw_params.rx_page_order);
1135 element = rxq->rx_used.next;
1136 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1138 spin_unlock_irqrestore(&rxq->lock, flags);
1141 /* Get physical address of RB/SKB */
1142 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1143 PAGE_SIZE << priv->hw_params.rx_page_order,
1144 PCI_DMA_FROMDEVICE);
1146 spin_lock_irqsave(&rxq->lock, flags);
1148 list_add_tail(&rxb->list, &rxq->rx_free);
1150 priv->alloc_rxb_page++;
1152 spin_unlock_irqrestore(&rxq->lock, flags);
1156 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1158 unsigned long flags;
1160 spin_lock_irqsave(&rxq->lock, flags);
1161 INIT_LIST_HEAD(&rxq->rx_free);
1162 INIT_LIST_HEAD(&rxq->rx_used);
1163 /* Fill the rx_used queue with _all_ of the Rx buffers */
1164 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1165 /* In the reset function, these buffers may have been allocated
1166 * to an SKB, so we need to unmap and free potential storage */
1167 if (rxq->pool[i].page != NULL) {
1168 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1169 PAGE_SIZE << priv->hw_params.rx_page_order,
1170 PCI_DMA_FROMDEVICE);
1171 __iwl_free_pages(priv, rxq->pool[i].page);
1172 rxq->pool[i].page = NULL;
1174 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1177 /* Set us so that we have processed and used all buffers, but have
1178 * not restocked the Rx queue with fresh buffers */
1179 rxq->read = rxq->write = 0;
1180 rxq->write_actual = 0;
1181 rxq->free_count = 0;
1182 spin_unlock_irqrestore(&rxq->lock, flags);
1185 void iwl3945_rx_replenish(void *data)
1187 struct iwl_priv *priv = data;
1188 unsigned long flags;
1190 iwl3945_rx_allocate(priv, GFP_KERNEL);
1192 spin_lock_irqsave(&priv->lock, flags);
1193 iwl3945_rx_queue_restock(priv);
1194 spin_unlock_irqrestore(&priv->lock, flags);
1197 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1199 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1201 iwl3945_rx_queue_restock(priv);
1205 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1206 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1207 * This free routine walks the list of POOL entries and if SKB is set to
1208 * non NULL it is unmapped and freed
1210 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1213 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1214 if (rxq->pool[i].page != NULL) {
1215 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1216 PAGE_SIZE << priv->hw_params.rx_page_order,
1217 PCI_DMA_FROMDEVICE);
1218 __iwl_free_pages(priv, rxq->pool[i].page);
1219 rxq->pool[i].page = NULL;
1223 dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1225 dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
1226 rxq->rb_stts, rxq->rb_stts_dma);
1228 rxq->rb_stts = NULL;
1232 /* Convert linear signal-to-noise ratio into dB */
1233 static u8 ratio2dB[100] = {
1234 /* 0 1 2 3 4 5 6 7 8 9 */
1235 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1236 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1237 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1238 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1239 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1240 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1241 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1242 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1243 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1244 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1247 /* Calculates a relative dB value from a ratio of linear
1248 * (i.e. not dB) signal levels.
1249 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1250 int iwl3945_calc_db_from_ratio(int sig_ratio)
1252 /* 1000:1 or higher just report as 60 dB */
1253 if (sig_ratio >= 1000)
1256 /* 100:1 or higher, divide by 10 and use table,
1257 * add 20 dB to make up for divide by 10 */
1258 if (sig_ratio >= 100)
1259 return 20 + (int)ratio2dB[sig_ratio/10];
1261 /* We shouldn't see this */
1265 /* Use table for ratios 1:1 - 99:1 */
1266 return (int)ratio2dB[sig_ratio];
1270 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1272 * Uses the priv->rx_handlers callback function array to invoke
1273 * the appropriate handlers, including command responses,
1274 * frame-received notifications, and other notifications.
1276 static void iwl3945_rx_handle(struct iwl_priv *priv)
1278 struct iwl_rx_mem_buffer *rxb;
1279 struct iwl_rx_packet *pkt;
1280 struct iwl_rx_queue *rxq = &priv->rxq;
1283 unsigned long flags;
1286 int total_empty = 0;
1288 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1289 * buffer that the driver may process (last buffer filled by ucode). */
1290 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1293 /* calculate total frames need to be restock after handling RX */
1294 total_empty = r - rxq->write_actual;
1295 if (total_empty < 0)
1296 total_empty += RX_QUEUE_SIZE;
1298 if (total_empty > (RX_QUEUE_SIZE / 2))
1300 /* Rx interrupt, but nothing sent from uCode */
1302 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1305 rxb = rxq->queue[i];
1307 /* If an RXB doesn't have a Rx queue slot associated with it,
1308 * then a bug has been introduced in the queue refilling
1309 * routines -- catch it here */
1310 BUG_ON(rxb == NULL);
1312 rxq->queue[i] = NULL;
1314 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1315 PAGE_SIZE << priv->hw_params.rx_page_order,
1316 PCI_DMA_FROMDEVICE);
1317 pkt = rxb_addr(rxb);
1319 trace_iwlwifi_dev_rx(priv, pkt,
1320 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1322 /* Reclaim a command buffer only if this packet is a response
1323 * to a (driver-originated) command.
1324 * If the packet (e.g. Rx frame) originated from uCode,
1325 * there is no command buffer to reclaim.
1326 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1327 * but apparently a few don't get set; catch them here. */
1328 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1329 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1330 (pkt->hdr.cmd != REPLY_TX);
1332 /* Based on type of command response or notification,
1333 * handle those that need handling via function in
1334 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1335 if (priv->rx_handlers[pkt->hdr.cmd]) {
1336 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1337 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1338 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1339 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1341 /* No handling needed */
1343 "r %d i %d No handler needed for %s, 0x%02x\n",
1344 r, i, get_cmd_string(pkt->hdr.cmd),
1349 * XXX: After here, we should always check rxb->page
1350 * against NULL before touching it or its virtual
1351 * memory (pkt). Because some rx_handler might have
1352 * already taken or freed the pages.
1356 /* Invoke any callbacks, transfer the buffer to caller,
1357 * and fire off the (possibly) blocking iwl_send_cmd()
1358 * as we reclaim the driver command queue */
1360 iwl_tx_cmd_complete(priv, rxb);
1362 IWL_WARN(priv, "Claim null rxb?\n");
1365 /* Reuse the page if possible. For notification packets and
1366 * SKBs that fail to Rx correctly, add them back into the
1367 * rx_free list for reuse later. */
1368 spin_lock_irqsave(&rxq->lock, flags);
1369 if (rxb->page != NULL) {
1370 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1371 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1372 PCI_DMA_FROMDEVICE);
1373 list_add_tail(&rxb->list, &rxq->rx_free);
1376 list_add_tail(&rxb->list, &rxq->rx_used);
1378 spin_unlock_irqrestore(&rxq->lock, flags);
1380 i = (i + 1) & RX_QUEUE_MASK;
1381 /* If there are a lot of unused frames,
1382 * restock the Rx queue so ucode won't assert. */
1387 iwl3945_rx_replenish_now(priv);
1393 /* Backtrack one entry */
1396 iwl3945_rx_replenish_now(priv);
1398 iwl3945_rx_queue_restock(priv);
1401 /* call this function to flush any scheduled tasklet */
1402 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1404 /* wait to make sure we flush pending tasklet*/
1405 synchronize_irq(priv->pci_dev->irq);
1406 tasklet_kill(&priv->irq_tasklet);
1409 static const char *desc_lookup(int i)
1417 return "BAD_CHECKSUM";
1419 return "NMI_INTERRUPT";
1423 return "FATAL_ERROR";
1429 #define ERROR_START_OFFSET (1 * sizeof(u32))
1430 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1432 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1435 u32 desc, time, count, base, data1;
1436 u32 blink1, blink2, ilink1, ilink2;
1438 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1440 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1441 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1446 count = iwl_read_targ_mem(priv, base);
1448 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1449 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1450 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1451 priv->status, count);
1454 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1455 "ilink1 nmiPC Line\n");
1456 for (i = ERROR_START_OFFSET;
1457 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1458 i += ERROR_ELEM_SIZE) {
1459 desc = iwl_read_targ_mem(priv, base + i);
1461 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1463 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1465 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1467 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1469 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1471 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1474 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1475 desc_lookup(desc), desc, time, blink1, blink2,
1476 ilink1, ilink2, data1);
1477 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1478 0, blink1, blink2, ilink1, ilink2);
1482 #define EVENT_START_OFFSET (6 * sizeof(u32))
1485 * iwl3945_print_event_log - Dump error event log to syslog
1488 static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1489 u32 num_events, u32 mode,
1490 int pos, char **buf, size_t bufsz)
1493 u32 base; /* SRAM byte address of event log header */
1494 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1495 u32 ptr; /* SRAM byte address of log data */
1496 u32 ev, time, data; /* event log data */
1497 unsigned long reg_flags;
1499 if (num_events == 0)
1502 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1505 event_size = 2 * sizeof(u32);
1507 event_size = 3 * sizeof(u32);
1509 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1511 /* Make sure device is powered up for SRAM reads */
1512 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1513 iwl_grab_nic_access(priv);
1515 /* Set starting address; reads will auto-increment */
1516 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1519 /* "time" is actually "data" for mode 0 (no timestamp).
1520 * place event id # at far right for easier visual parsing. */
1521 for (i = 0; i < num_events; i++) {
1522 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1523 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1527 pos += scnprintf(*buf + pos, bufsz - pos,
1531 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1532 trace_iwlwifi_dev_ucode_event(priv, 0,
1536 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1538 pos += scnprintf(*buf + pos, bufsz - pos,
1539 "%010u:0x%08x:%04u\n",
1542 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
1544 trace_iwlwifi_dev_ucode_event(priv, time,
1550 /* Allow device to power down */
1551 iwl_release_nic_access(priv);
1552 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1557 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1559 static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1560 u32 num_wraps, u32 next_entry,
1562 int pos, char **buf, size_t bufsz)
1565 * display the newest DEFAULT_LOG_ENTRIES entries
1566 * i.e the entries just before the next ont that uCode would fill.
1569 if (next_entry < size) {
1570 pos = iwl3945_print_event_log(priv,
1571 capacity - (size - next_entry),
1572 size - next_entry, mode,
1574 pos = iwl3945_print_event_log(priv, 0,
1578 pos = iwl3945_print_event_log(priv, next_entry - size,
1582 if (next_entry < size)
1583 pos = iwl3945_print_event_log(priv, 0,
1587 pos = iwl3945_print_event_log(priv, next_entry - size,
1594 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1596 int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1597 char **buf, bool display)
1599 u32 base; /* SRAM byte address of event log header */
1600 u32 capacity; /* event log capacity in # entries */
1601 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1602 u32 num_wraps; /* # times uCode wrapped to top of log */
1603 u32 next_entry; /* index of next entry to be written by uCode */
1604 u32 size; /* # entries that we'll print */
1608 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1609 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1610 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1614 /* event log header */
1615 capacity = iwl_read_targ_mem(priv, base);
1616 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1617 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1618 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1620 if (capacity > priv->cfg->max_event_log_size) {
1621 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1622 capacity, priv->cfg->max_event_log_size);
1623 capacity = priv->cfg->max_event_log_size;
1626 if (next_entry > priv->cfg->max_event_log_size) {
1627 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1628 next_entry, priv->cfg->max_event_log_size);
1629 next_entry = priv->cfg->max_event_log_size;
1632 size = num_wraps ? capacity : next_entry;
1634 /* bail out if nothing in log */
1636 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1640 #ifdef CONFIG_IWLWIFI_DEBUG
1641 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1642 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1643 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1645 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1646 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1649 IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1652 #ifdef CONFIG_IWLWIFI_DEBUG
1655 bufsz = capacity * 48;
1658 *buf = kmalloc(bufsz, GFP_KERNEL);
1662 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1663 /* if uCode has wrapped back to top of log,
1664 * start at the oldest entry,
1665 * i.e the next one that uCode would fill.
1668 pos = iwl3945_print_event_log(priv, next_entry,
1669 capacity - next_entry, mode,
1672 /* (then/else) start at top of log */
1673 pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
1676 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1677 next_entry, size, mode,
1680 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1681 next_entry, size, mode,
1687 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1689 u32 inta, handled = 0;
1691 unsigned long flags;
1692 #ifdef CONFIG_IWLWIFI_DEBUG
1696 spin_lock_irqsave(&priv->lock, flags);
1698 /* Ack/clear/reset pending uCode interrupts.
1699 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1700 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1701 inta = iwl_read32(priv, CSR_INT);
1702 iwl_write32(priv, CSR_INT, inta);
1704 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1705 * Any new interrupts that happen after this, either while we're
1706 * in this tasklet, or later, will show up in next ISR/tasklet. */
1707 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1708 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1710 #ifdef CONFIG_IWLWIFI_DEBUG
1711 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1712 /* just for debug */
1713 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1714 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1715 inta, inta_mask, inta_fh);
1719 spin_unlock_irqrestore(&priv->lock, flags);
1721 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1722 * atomic, make sure that inta covers all the interrupts that
1723 * we've discovered, even if FH interrupt came in just after
1724 * reading CSR_INT. */
1725 if (inta_fh & CSR39_FH_INT_RX_MASK)
1726 inta |= CSR_INT_BIT_FH_RX;
1727 if (inta_fh & CSR39_FH_INT_TX_MASK)
1728 inta |= CSR_INT_BIT_FH_TX;
1730 /* Now service all interrupt bits discovered above. */
1731 if (inta & CSR_INT_BIT_HW_ERR) {
1732 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1734 /* Tell the device to stop sending interrupts */
1735 iwl_disable_interrupts(priv);
1737 priv->isr_stats.hw++;
1738 iwl_irq_handle_error(priv);
1740 handled |= CSR_INT_BIT_HW_ERR;
1745 #ifdef CONFIG_IWLWIFI_DEBUG
1746 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1747 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1748 if (inta & CSR_INT_BIT_SCD) {
1749 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1750 "the frame/frames.\n");
1751 priv->isr_stats.sch++;
1754 /* Alive notification via Rx interrupt will do the real work */
1755 if (inta & CSR_INT_BIT_ALIVE) {
1756 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1757 priv->isr_stats.alive++;
1761 /* Safely ignore these bits for debug checks below */
1762 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1764 /* Error detected by uCode */
1765 if (inta & CSR_INT_BIT_SW_ERR) {
1766 IWL_ERR(priv, "Microcode SW error detected. "
1767 "Restarting 0x%X.\n", inta);
1768 priv->isr_stats.sw++;
1769 priv->isr_stats.sw_err = inta;
1770 iwl_irq_handle_error(priv);
1771 handled |= CSR_INT_BIT_SW_ERR;
1774 /* uCode wakes up after power-down sleep */
1775 if (inta & CSR_INT_BIT_WAKEUP) {
1776 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1777 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1778 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1779 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1780 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1781 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1782 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1783 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1785 priv->isr_stats.wakeup++;
1786 handled |= CSR_INT_BIT_WAKEUP;
1789 /* All uCode command responses, including Tx command responses,
1790 * Rx "responses" (frame-received notification), and other
1791 * notifications from uCode come through here*/
1792 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1793 iwl3945_rx_handle(priv);
1794 priv->isr_stats.rx++;
1795 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1798 if (inta & CSR_INT_BIT_FH_TX) {
1799 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1800 priv->isr_stats.tx++;
1802 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1803 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1804 (FH39_SRVC_CHNL), 0x0);
1805 handled |= CSR_INT_BIT_FH_TX;
1808 if (inta & ~handled) {
1809 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1810 priv->isr_stats.unhandled++;
1813 if (inta & ~priv->inta_mask) {
1814 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1815 inta & ~priv->inta_mask);
1816 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1819 /* Re-enable all interrupts */
1820 /* only Re-enable if disabled by irq */
1821 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1822 iwl_enable_interrupts(priv);
1824 #ifdef CONFIG_IWLWIFI_DEBUG
1825 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1826 inta = iwl_read32(priv, CSR_INT);
1827 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1828 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1829 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1830 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1835 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1836 enum ieee80211_band band,
1837 u8 is_active, u8 n_probes,
1838 struct iwl3945_scan_channel *scan_ch,
1839 struct ieee80211_vif *vif)
1841 struct ieee80211_channel *chan;
1842 const struct ieee80211_supported_band *sband;
1843 const struct iwl_channel_info *ch_info;
1844 u16 passive_dwell = 0;
1845 u16 active_dwell = 0;
1848 sband = iwl_get_hw_mode(priv, band);
1852 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1853 passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
1855 if (passive_dwell <= active_dwell)
1856 passive_dwell = active_dwell + 1;
1858 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1859 chan = priv->scan_request->channels[i];
1861 if (chan->band != band)
1864 scan_ch->channel = chan->hw_value;
1866 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1867 if (!is_channel_valid(ch_info)) {
1868 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1873 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1874 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1875 /* If passive , set up for auto-switch
1876 * and use long active_dwell time.
1878 if (!is_active || is_channel_passive(ch_info) ||
1879 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1880 scan_ch->type = 0; /* passive */
1881 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1882 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1884 scan_ch->type = 1; /* active */
1887 /* Set direct probe bits. These may be used both for active
1888 * scan channels (probes gets sent right away),
1889 * or for passive channels (probes get se sent only after
1890 * hearing clear Rx packet).*/
1891 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1893 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1895 /* uCode v1 does not allow setting direct probe bits on
1896 * passive channel. */
1897 if ((scan_ch->type & 1) && n_probes)
1898 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1901 /* Set txpower levels to defaults */
1902 scan_ch->tpc.dsp_atten = 110;
1903 /* scan_pwr_info->tpc.dsp_atten; */
1905 /*scan_pwr_info->tpc.tx_gain; */
1906 if (band == IEEE80211_BAND_5GHZ)
1907 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1909 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1910 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1912 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1916 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1918 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1919 (scan_ch->type & 1) ?
1920 active_dwell : passive_dwell);
1926 IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added);
1930 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1931 struct ieee80211_rate *rates)
1935 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1936 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1937 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1938 rates[i].hw_value_short = i;
1940 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1942 * If CCK != 1M then set short preamble rate flag.
1944 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1945 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1950 /******************************************************************************
1952 * uCode download functions
1954 ******************************************************************************/
1956 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1958 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1959 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1960 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1961 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1962 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1963 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1967 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1968 * looking at all data.
1970 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1977 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1979 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1980 IWL39_RTC_INST_LOWER_BOUND);
1983 for (; len > 0; len -= sizeof(u32), image++) {
1984 /* read data comes through single port, auto-incr addr */
1985 /* NOTE: Use the debugless read so we don't flood kernel log
1986 * if IWL_DL_IO is set */
1987 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1988 if (val != le32_to_cpu(*image)) {
1989 IWL_ERR(priv, "uCode INST section is invalid at "
1990 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1991 save_len - len, val, le32_to_cpu(*image));
2001 IWL_DEBUG_INFO(priv,
2002 "ucode image in INSTRUCTION memory is good\n");
2009 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2010 * using sample data 100 bytes apart. If these sample points are good,
2011 * it's a pretty good bet that everything between them is good, too.
2013 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2020 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2022 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2023 /* read data comes through single port, auto-incr addr */
2024 /* NOTE: Use the debugless read so we don't flood kernel log
2025 * if IWL_DL_IO is set */
2026 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2027 i + IWL39_RTC_INST_LOWER_BOUND);
2028 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2029 if (val != le32_to_cpu(*image)) {
2030 #if 0 /* Enable this if you want to see details */
2031 IWL_ERR(priv, "uCode INST section is invalid at "
2032 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2047 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2048 * and verify its contents
2050 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2057 image = (__le32 *)priv->ucode_boot.v_addr;
2058 len = priv->ucode_boot.len;
2059 rc = iwl3945_verify_inst_sparse(priv, image, len);
2061 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2065 /* Try initialize */
2066 image = (__le32 *)priv->ucode_init.v_addr;
2067 len = priv->ucode_init.len;
2068 rc = iwl3945_verify_inst_sparse(priv, image, len);
2070 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2074 /* Try runtime/protocol */
2075 image = (__le32 *)priv->ucode_code.v_addr;
2076 len = priv->ucode_code.len;
2077 rc = iwl3945_verify_inst_sparse(priv, image, len);
2079 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2083 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2085 /* Since nothing seems to match, show first several data entries in
2086 * instruction SRAM, so maybe visual inspection will give a clue.
2087 * Selection of bootstrap image (vs. other images) is arbitrary. */
2088 image = (__le32 *)priv->ucode_boot.v_addr;
2089 len = priv->ucode_boot.len;
2090 rc = iwl3945_verify_inst_full(priv, image, len);
2095 static void iwl3945_nic_start(struct iwl_priv *priv)
2097 /* Remove all resets to allow NIC to operate */
2098 iwl_write32(priv, CSR_RESET, 0);
2101 #define IWL3945_UCODE_GET(item) \
2102 static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode)\
2104 return le32_to_cpu(ucode->u.v1.item); \
2107 static u32 iwl3945_ucode_get_header_size(u32 api_ver)
2112 static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode)
2114 return (u8 *) ucode->u.v1.data;
2117 IWL3945_UCODE_GET(inst_size);
2118 IWL3945_UCODE_GET(data_size);
2119 IWL3945_UCODE_GET(init_size);
2120 IWL3945_UCODE_GET(init_data_size);
2121 IWL3945_UCODE_GET(boot_size);
2124 * iwl3945_read_ucode - Read uCode images from disk file.
2126 * Copy into buffers for card to fetch via bus-mastering
2128 static int iwl3945_read_ucode(struct iwl_priv *priv)
2130 const struct iwl_ucode_header *ucode;
2131 int ret = -EINVAL, index;
2132 const struct firmware *ucode_raw;
2133 /* firmware file name contains uCode/driver compatibility version */
2134 const char *name_pre = priv->cfg->fw_name_pre;
2135 const unsigned int api_max = priv->cfg->ucode_api_max;
2136 const unsigned int api_min = priv->cfg->ucode_api_min;
2140 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2142 /* Ask kernel firmware_class module to get the boot firmware off disk.
2143 * request_firmware() is synchronous, file is in memory on return. */
2144 for (index = api_max; index >= api_min; index--) {
2145 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2146 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2148 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2155 if (index < api_max)
2156 IWL_ERR(priv, "Loaded firmware %s, "
2157 "which is deprecated. "
2158 " Please use API v%u instead.\n",
2160 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2161 "(%zd bytes) from disk\n",
2162 buf, ucode_raw->size);
2170 /* Make sure that we got at least our header! */
2171 if (ucode_raw->size < iwl3945_ucode_get_header_size(1)) {
2172 IWL_ERR(priv, "File size way too small!\n");
2177 /* Data from ucode file: header followed by uCode images */
2178 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2180 priv->ucode_ver = le32_to_cpu(ucode->ver);
2181 api_ver = IWL_UCODE_API(priv->ucode_ver);
2182 inst_size = iwl3945_ucode_get_inst_size(ucode);
2183 data_size = iwl3945_ucode_get_data_size(ucode);
2184 init_size = iwl3945_ucode_get_init_size(ucode);
2185 init_data_size = iwl3945_ucode_get_init_data_size(ucode);
2186 boot_size = iwl3945_ucode_get_boot_size(ucode);
2187 src = iwl3945_ucode_get_data(ucode);
2189 /* api_ver should match the api version forming part of the
2190 * firmware filename ... but we don't check for that and only rely
2191 * on the API version read from firmware header from here on forward */
2193 if (api_ver < api_min || api_ver > api_max) {
2194 IWL_ERR(priv, "Driver unable to support your firmware API. "
2195 "Driver supports v%u, firmware is v%u.\n",
2197 priv->ucode_ver = 0;
2201 if (api_ver != api_max)
2202 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2203 "got %u. New firmware can be obtained "
2204 "from http://www.intellinuxwireless.org.\n",
2207 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2208 IWL_UCODE_MAJOR(priv->ucode_ver),
2209 IWL_UCODE_MINOR(priv->ucode_ver),
2210 IWL_UCODE_API(priv->ucode_ver),
2211 IWL_UCODE_SERIAL(priv->ucode_ver));
2213 snprintf(priv->hw->wiphy->fw_version,
2214 sizeof(priv->hw->wiphy->fw_version),
2216 IWL_UCODE_MAJOR(priv->ucode_ver),
2217 IWL_UCODE_MINOR(priv->ucode_ver),
2218 IWL_UCODE_API(priv->ucode_ver),
2219 IWL_UCODE_SERIAL(priv->ucode_ver));
2221 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2223 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2225 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2227 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2229 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2231 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2235 /* Verify size of file vs. image size info in file's header */
2236 if (ucode_raw->size != iwl3945_ucode_get_header_size(api_ver) +
2237 inst_size + data_size + init_size +
2238 init_data_size + boot_size) {
2240 IWL_DEBUG_INFO(priv,
2241 "uCode file size %zd does not match expected size\n",
2247 /* Verify that uCode images will fit in card's SRAM */
2248 if (inst_size > IWL39_MAX_INST_SIZE) {
2249 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2255 if (data_size > IWL39_MAX_DATA_SIZE) {
2256 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2261 if (init_size > IWL39_MAX_INST_SIZE) {
2262 IWL_DEBUG_INFO(priv,
2263 "uCode init instr len %d too large to fit in\n",
2268 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2269 IWL_DEBUG_INFO(priv,
2270 "uCode init data len %d too large to fit in\n",
2275 if (boot_size > IWL39_MAX_BSM_SIZE) {
2276 IWL_DEBUG_INFO(priv,
2277 "uCode boot instr len %d too large to fit in\n",
2283 /* Allocate ucode buffers for card's bus-master loading ... */
2285 /* Runtime instructions and 2 copies of data:
2286 * 1) unmodified from disk
2287 * 2) backup cache for save/restore during power-downs */
2288 priv->ucode_code.len = inst_size;
2289 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2291 priv->ucode_data.len = data_size;
2292 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2294 priv->ucode_data_backup.len = data_size;
2295 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2297 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2298 !priv->ucode_data_backup.v_addr)
2301 /* Initialization instructions and data */
2302 if (init_size && init_data_size) {
2303 priv->ucode_init.len = init_size;
2304 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2306 priv->ucode_init_data.len = init_data_size;
2307 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2309 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2313 /* Bootstrap (instructions only, no data) */
2315 priv->ucode_boot.len = boot_size;
2316 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2318 if (!priv->ucode_boot.v_addr)
2322 /* Copy images into buffers for card's bus-master reads ... */
2324 /* Runtime instructions (first block of data in file) */
2326 IWL_DEBUG_INFO(priv,
2327 "Copying (but not loading) uCode instr len %zd\n", len);
2328 memcpy(priv->ucode_code.v_addr, src, len);
2331 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2332 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2334 /* Runtime data (2nd block)
2335 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2337 IWL_DEBUG_INFO(priv,
2338 "Copying (but not loading) uCode data len %zd\n", len);
2339 memcpy(priv->ucode_data.v_addr, src, len);
2340 memcpy(priv->ucode_data_backup.v_addr, src, len);
2343 /* Initialization instructions (3rd block) */
2346 IWL_DEBUG_INFO(priv,
2347 "Copying (but not loading) init instr len %zd\n", len);
2348 memcpy(priv->ucode_init.v_addr, src, len);
2352 /* Initialization data (4th block) */
2353 if (init_data_size) {
2354 len = init_data_size;
2355 IWL_DEBUG_INFO(priv,
2356 "Copying (but not loading) init data len %zd\n", len);
2357 memcpy(priv->ucode_init_data.v_addr, src, len);
2361 /* Bootstrap instructions (5th block) */
2363 IWL_DEBUG_INFO(priv,
2364 "Copying (but not loading) boot instr len %zd\n", len);
2365 memcpy(priv->ucode_boot.v_addr, src, len);
2367 /* We have our copies now, allow OS release its copies */
2368 release_firmware(ucode_raw);
2372 IWL_ERR(priv, "failed to allocate pci memory\n");
2374 iwl3945_dealloc_ucode_pci(priv);
2377 release_firmware(ucode_raw);
2385 * iwl3945_set_ucode_ptrs - Set uCode address location
2387 * Tell initialization uCode where to find runtime uCode.
2389 * BSM registers initially contain pointers to initialization uCode.
2390 * We need to replace them to load runtime uCode inst and data,
2391 * and to save runtime data when powering down.
2393 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2398 /* bits 31:0 for 3945 */
2399 pinst = priv->ucode_code.p_addr;
2400 pdata = priv->ucode_data_backup.p_addr;
2402 /* Tell bootstrap uCode where to find image to load */
2403 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2404 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2405 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2406 priv->ucode_data.len);
2408 /* Inst byte count must be last to set up, bit 31 signals uCode
2409 * that all new ptr/size info is in place */
2410 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2411 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2413 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2419 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2421 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2423 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2425 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2427 /* Check alive response for "valid" sign from uCode */
2428 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2429 /* We had an error bringing up the hardware, so take it
2430 * all the way back down so we can try again */
2431 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2435 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2436 * This is a paranoid check, because we would not have gotten the
2437 * "initialize" alive if code weren't properly loaded. */
2438 if (iwl3945_verify_ucode(priv)) {
2439 /* Runtime instruction load was bad;
2440 * take it all the way back down so we can try again */
2441 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2445 /* Send pointers to protocol/runtime uCode image ... init code will
2446 * load and launch runtime uCode, which will send us another "Alive"
2448 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2449 if (iwl3945_set_ucode_ptrs(priv)) {
2450 /* Runtime instruction load won't happen;
2451 * take it all the way back down so we can try again */
2452 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2458 queue_work(priv->workqueue, &priv->restart);
2462 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2463 * from protocol/runtime uCode (initialization uCode's
2464 * Alive gets handled by iwl3945_init_alive_start()).
2466 static void iwl3945_alive_start(struct iwl_priv *priv)
2468 int thermal_spin = 0;
2471 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2473 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2474 /* We had an error bringing up the hardware, so take it
2475 * all the way back down so we can try again */
2476 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2480 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2481 * This is a paranoid check, because we would not have gotten the
2482 * "runtime" alive if code weren't properly loaded. */
2483 if (iwl3945_verify_ucode(priv)) {
2484 /* Runtime instruction load was bad;
2485 * take it all the way back down so we can try again */
2486 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2490 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2491 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2494 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2495 /* if RFKILL is not on, then wait for thermal
2496 * sensor in adapter to kick in */
2497 while (iwl3945_hw_get_temperature(priv) == 0) {
2503 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2506 set_bit(STATUS_RF_KILL_HW, &priv->status);
2508 /* After the ALIVE response, we can send commands to 3945 uCode */
2509 set_bit(STATUS_ALIVE, &priv->status);
2511 if (priv->cfg->ops->lib->recover_from_tx_stall) {
2512 /* Enable timer to monitor the driver queues */
2513 mod_timer(&priv->monitor_recover,
2515 msecs_to_jiffies(priv->cfg->monitor_recover_period));
2518 if (iwl_is_rfkill(priv))
2521 ieee80211_wake_queues(priv->hw);
2523 priv->active_rate = IWL_RATES_MASK;
2525 iwl_power_update_mode(priv, true);
2527 if (iwl_is_associated(priv)) {
2528 struct iwl3945_rxon_cmd *active_rxon =
2529 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2531 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2532 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2534 /* Initialize our rx_config data */
2535 iwl_connection_init_rx_config(priv, NULL);
2538 /* Configure Bluetooth device coexistence support */
2539 priv->cfg->ops->hcmd->send_bt_config(priv);
2541 /* Configure the adapter for unassociated operation */
2542 iwlcore_commit_rxon(priv);
2544 iwl3945_reg_txpower_periodic(priv);
2546 iwl_leds_init(priv);
2548 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2549 set_bit(STATUS_READY, &priv->status);
2550 wake_up_interruptible(&priv->wait_command_queue);
2555 queue_work(priv->workqueue, &priv->restart);
2558 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2560 static void __iwl3945_down(struct iwl_priv *priv)
2562 unsigned long flags;
2563 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2564 struct ieee80211_conf *conf = NULL;
2566 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2568 conf = ieee80211_get_hw_conf(priv->hw);
2571 set_bit(STATUS_EXIT_PENDING, &priv->status);
2573 /* Station information will now be cleared in device */
2574 iwl_clear_ucode_stations(priv);
2575 iwl_dealloc_bcast_station(priv);
2576 iwl_clear_driver_stations(priv);
2578 /* Unblock any waiting calls */
2579 wake_up_interruptible_all(&priv->wait_command_queue);
2581 /* Wipe out the EXIT_PENDING status bit if we are not actually
2582 * exiting the module */
2584 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2586 /* stop and reset the on-board processor */
2587 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2589 /* tell the device to stop sending interrupts */
2590 spin_lock_irqsave(&priv->lock, flags);
2591 iwl_disable_interrupts(priv);
2592 spin_unlock_irqrestore(&priv->lock, flags);
2593 iwl_synchronize_irq(priv);
2595 if (priv->mac80211_registered)
2596 ieee80211_stop_queues(priv->hw);
2598 /* If we have not previously called iwl3945_init() then
2599 * clear all bits but the RF Kill bits and return */
2600 if (!iwl_is_init(priv)) {
2601 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2603 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2604 STATUS_GEO_CONFIGURED |
2605 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2606 STATUS_EXIT_PENDING;
2610 /* ...otherwise clear out all the status bits but the RF Kill
2611 * bit and continue taking the NIC down. */
2612 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2614 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2615 STATUS_GEO_CONFIGURED |
2616 test_bit(STATUS_FW_ERROR, &priv->status) <<
2618 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2619 STATUS_EXIT_PENDING;
2621 iwl3945_hw_txq_ctx_stop(priv);
2622 iwl3945_hw_rxq_stop(priv);
2624 /* Power-down device's busmaster DMA clocks */
2625 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2628 /* Stop the device, and put it in low power state */
2629 priv->cfg->ops->lib->apm_ops.stop(priv);
2632 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2634 if (priv->ibss_beacon)
2635 dev_kfree_skb(priv->ibss_beacon);
2636 priv->ibss_beacon = NULL;
2638 /* clear out any free frames */
2639 iwl3945_clear_free_frames(priv);
2642 static void iwl3945_down(struct iwl_priv *priv)
2644 mutex_lock(&priv->mutex);
2645 __iwl3945_down(priv);
2646 mutex_unlock(&priv->mutex);
2648 iwl3945_cancel_deferred_work(priv);
2651 #define MAX_HW_RESTARTS 5
2653 static int __iwl3945_up(struct iwl_priv *priv)
2657 rc = iwl_alloc_bcast_station(priv, false);
2661 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2662 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2666 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2667 IWL_ERR(priv, "ucode not available for device bring up\n");
2671 /* If platform's RF_KILL switch is NOT set to KILL */
2672 if (iwl_read32(priv, CSR_GP_CNTRL) &
2673 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2674 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2676 set_bit(STATUS_RF_KILL_HW, &priv->status);
2677 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2681 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2683 rc = iwl3945_hw_nic_init(priv);
2685 IWL_ERR(priv, "Unable to int nic\n");
2689 /* make sure rfkill handshake bits are cleared */
2690 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2691 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2692 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2694 /* clear (again), then enable host interrupts */
2695 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2696 iwl_enable_interrupts(priv);
2698 /* really make sure rfkill handshake bits are cleared */
2699 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2700 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2702 /* Copy original ucode data image from disk into backup cache.
2703 * This will be used to initialize the on-board processor's
2704 * data SRAM for a clean start when the runtime program first loads. */
2705 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2706 priv->ucode_data.len);
2708 /* We return success when we resume from suspend and rf_kill is on. */
2709 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2712 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2714 /* load bootstrap state machine,
2715 * load bootstrap program into processor's memory,
2716 * prepare to load the "initialize" uCode */
2717 rc = priv->cfg->ops->lib->load_ucode(priv);
2721 "Unable to set up bootstrap uCode: %d\n", rc);
2725 /* start card; "initialize" will load runtime ucode */
2726 iwl3945_nic_start(priv);
2728 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2733 set_bit(STATUS_EXIT_PENDING, &priv->status);
2734 __iwl3945_down(priv);
2735 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2737 /* tried to restart and config the device for as long as our
2738 * patience could withstand */
2739 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2744 /*****************************************************************************
2746 * Workqueue callbacks
2748 *****************************************************************************/
2750 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2752 struct iwl_priv *priv =
2753 container_of(data, struct iwl_priv, init_alive_start.work);
2755 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2758 mutex_lock(&priv->mutex);
2759 iwl3945_init_alive_start(priv);
2760 mutex_unlock(&priv->mutex);
2763 static void iwl3945_bg_alive_start(struct work_struct *data)
2765 struct iwl_priv *priv =
2766 container_of(data, struct iwl_priv, alive_start.work);
2768 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2771 mutex_lock(&priv->mutex);
2772 iwl3945_alive_start(priv);
2773 mutex_unlock(&priv->mutex);
2777 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2778 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2779 * *is* readable even when device has been SW_RESET into low power mode
2780 * (e.g. during RF KILL).
2782 static void iwl3945_rfkill_poll(struct work_struct *data)
2784 struct iwl_priv *priv =
2785 container_of(data, struct iwl_priv, _3945.rfkill_poll.work);
2786 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2787 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2788 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2790 if (new_rfkill != old_rfkill) {
2792 set_bit(STATUS_RF_KILL_HW, &priv->status);
2794 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2796 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2798 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2799 new_rfkill ? "disable radio" : "enable radio");
2802 /* Keep this running, even if radio now enabled. This will be
2803 * cancelled in mac_start() if system decides to start again */
2804 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
2805 round_jiffies_relative(2 * HZ));
2809 void iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
2811 struct iwl_host_cmd cmd = {
2812 .id = REPLY_SCAN_CMD,
2813 .len = sizeof(struct iwl3945_scan_cmd),
2814 .flags = CMD_SIZE_HUGE,
2816 struct iwl3945_scan_cmd *scan;
2817 struct ieee80211_conf *conf = NULL;
2819 enum ieee80211_band band;
2820 bool is_active = false;
2822 conf = ieee80211_get_hw_conf(priv->hw);
2824 cancel_delayed_work(&priv->scan_check);
2826 if (!iwl_is_ready(priv)) {
2827 IWL_WARN(priv, "request scan called when driver not ready.\n");
2831 /* Make sure the scan wasn't canceled before this queued work
2832 * was given the chance to run... */
2833 if (!test_bit(STATUS_SCANNING, &priv->status))
2836 /* This should never be called or scheduled if there is currently
2837 * a scan active in the hardware. */
2838 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2839 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2840 "Ignoring second request.\n");
2844 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2845 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2849 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2851 "Scan request while abort pending. Queuing.\n");
2855 if (iwl_is_rfkill(priv)) {
2856 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2860 if (!test_bit(STATUS_READY, &priv->status)) {
2862 "Scan request while uninitialized. Queuing.\n");
2866 if (!priv->scan_cmd) {
2867 priv->scan_cmd = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2868 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2869 if (!priv->scan_cmd) {
2870 IWL_DEBUG_SCAN(priv, "Fail to allocate scan memory\n");
2874 scan = priv->scan_cmd;
2875 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2877 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2878 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2880 if (iwl_is_associated(priv)) {
2883 u32 suspend_time = 100;
2884 u32 scan_suspend_time = 100;
2885 unsigned long flags;
2887 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2889 spin_lock_irqsave(&priv->lock, flags);
2890 interval = vif ? vif->bss_conf.beacon_int : 0;
2891 spin_unlock_irqrestore(&priv->lock, flags);
2893 scan->suspend_time = 0;
2894 scan->max_out_time = cpu_to_le32(200 * 1024);
2896 interval = suspend_time;
2898 * suspend time format:
2899 * 0-19: beacon interval in usec (time before exec.)
2901 * 24-31: number of beacons (suspend between channels)
2904 extra = (suspend_time / interval) << 24;
2905 scan_suspend_time = 0xFF0FFFFF &
2906 (extra | ((suspend_time % interval) * 1024));
2908 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2909 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2910 scan_suspend_time, interval);
2913 if (priv->is_internal_short_scan) {
2914 IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
2915 } else if (priv->scan_request->n_ssids) {
2917 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2918 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2919 /* always does wildcard anyway */
2920 if (!priv->scan_request->ssids[i].ssid_len)
2922 scan->direct_scan[p].id = WLAN_EID_SSID;
2923 scan->direct_scan[p].len =
2924 priv->scan_request->ssids[i].ssid_len;
2925 memcpy(scan->direct_scan[p].ssid,
2926 priv->scan_request->ssids[i].ssid,
2927 priv->scan_request->ssids[i].ssid_len);
2933 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2935 /* We don't build a direct scan probe request; the uCode will do
2936 * that based on the direct_mask added to each channel entry */
2937 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2938 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2939 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2941 /* flags + rate selection */
2943 switch (priv->scan_band) {
2944 case IEEE80211_BAND_2GHZ:
2945 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2946 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2947 scan->good_CRC_th = 0;
2948 band = IEEE80211_BAND_2GHZ;
2950 case IEEE80211_BAND_5GHZ:
2951 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2953 * If active scaning is requested but a certain channel
2954 * is marked passive, we can do active scanning if we
2955 * detect transmissions.
2957 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
2958 IWL_GOOD_CRC_TH_DISABLED;
2959 band = IEEE80211_BAND_5GHZ;
2962 IWL_WARN(priv, "Invalid scan band\n");
2966 if (!priv->is_internal_short_scan) {
2967 scan->tx_cmd.len = cpu_to_le16(
2968 iwl_fill_probe_req(priv,
2969 (struct ieee80211_mgmt *)scan->data,
2970 priv->scan_request->ie,
2971 priv->scan_request->ie_len,
2972 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2974 scan->tx_cmd.len = cpu_to_le16(
2975 iwl_fill_probe_req(priv,
2976 (struct ieee80211_mgmt *)scan->data,
2978 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2980 /* select Rx antennas */
2981 scan->flags |= iwl3945_get_antenna_flags(priv);
2983 scan->channel_count =
2984 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2985 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)], vif);
2987 if (scan->channel_count == 0) {
2988 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2992 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2993 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2995 scan->len = cpu_to_le16(cmd.len);
2997 set_bit(STATUS_SCAN_HW, &priv->status);
2998 if (iwl_send_cmd_sync(priv, &cmd))
3001 queue_delayed_work(priv->workqueue, &priv->scan_check,
3002 IWL_SCAN_CHECK_WATCHDOG);
3007 /* can not perform scan make sure we clear scanning
3008 * bits from status so next scan request can be performed.
3009 * if we dont clear scanning status bit here all next scan
3012 clear_bit(STATUS_SCAN_HW, &priv->status);
3013 clear_bit(STATUS_SCANNING, &priv->status);
3015 /* inform mac80211 scan aborted */
3016 queue_work(priv->workqueue, &priv->scan_completed);
3019 static void iwl3945_bg_restart(struct work_struct *data)
3021 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3023 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3026 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3027 mutex_lock(&priv->mutex);
3030 mutex_unlock(&priv->mutex);
3032 ieee80211_restart_hw(priv->hw);
3036 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3039 mutex_lock(&priv->mutex);
3041 mutex_unlock(&priv->mutex);
3045 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3047 struct iwl_priv *priv =
3048 container_of(data, struct iwl_priv, rx_replenish);
3050 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3053 mutex_lock(&priv->mutex);
3054 iwl3945_rx_replenish(priv);
3055 mutex_unlock(&priv->mutex);
3058 void iwl3945_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
3061 struct ieee80211_conf *conf = NULL;
3063 if (!vif || !priv->is_open)
3066 if (vif->type == NL80211_IFTYPE_AP) {
3067 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3071 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3072 vif->bss_conf.aid, priv->active_rxon.bssid_addr);
3074 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3077 iwl_scan_cancel_timeout(priv, 200);
3079 conf = ieee80211_get_hw_conf(priv->hw);
3081 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3082 iwlcore_commit_rxon(priv);
3084 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3085 iwl_setup_rxon_timing(priv, vif);
3086 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3087 sizeof(priv->rxon_timing), &priv->rxon_timing);
3089 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3090 "Attempting to continue.\n");
3092 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3094 priv->staging_rxon.assoc_id = cpu_to_le16(vif->bss_conf.aid);
3096 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3097 vif->bss_conf.aid, vif->bss_conf.beacon_int);
3099 if (vif->bss_conf.use_short_preamble)
3100 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3102 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3104 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3105 if (vif->bss_conf.use_short_slot)
3106 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3108 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3111 iwlcore_commit_rxon(priv);
3113 switch (vif->type) {
3114 case NL80211_IFTYPE_STATION:
3115 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3117 case NL80211_IFTYPE_ADHOC:
3118 iwl3945_send_beacon_cmd(priv);
3121 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3122 __func__, vif->type);
3127 /*****************************************************************************
3129 * mac80211 entry point functions
3131 *****************************************************************************/
3133 #define UCODE_READY_TIMEOUT (2 * HZ)
3135 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3137 struct iwl_priv *priv = hw->priv;
3140 IWL_DEBUG_MAC80211(priv, "enter\n");
3142 /* we should be verifying the device is ready to be opened */
3143 mutex_lock(&priv->mutex);
3145 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3146 * ucode filename and max sizes are card-specific. */
3148 if (!priv->ucode_code.len) {
3149 ret = iwl3945_read_ucode(priv);
3151 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3152 mutex_unlock(&priv->mutex);
3153 goto out_release_irq;
3157 ret = __iwl3945_up(priv);
3159 mutex_unlock(&priv->mutex);
3162 goto out_release_irq;
3164 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3166 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3167 * mac80211 will not be run successfully. */
3168 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3169 test_bit(STATUS_READY, &priv->status),
3170 UCODE_READY_TIMEOUT);
3172 if (!test_bit(STATUS_READY, &priv->status)) {
3174 "Wait for START_ALIVE timeout after %dms.\n",
3175 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3177 goto out_release_irq;
3181 /* ucode is running and will send rfkill notifications,
3182 * no need to poll the killswitch state anymore */
3183 cancel_delayed_work(&priv->_3945.rfkill_poll);
3185 iwl_led_start(priv);
3188 IWL_DEBUG_MAC80211(priv, "leave\n");
3193 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3197 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3199 struct iwl_priv *priv = hw->priv;
3201 IWL_DEBUG_MAC80211(priv, "enter\n");
3203 if (!priv->is_open) {
3204 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3210 if (iwl_is_ready_rf(priv)) {
3211 /* stop mac, cancel any scan request and clear
3212 * RXON_FILTER_ASSOC_MSK BIT
3214 mutex_lock(&priv->mutex);
3215 iwl_scan_cancel_timeout(priv, 100);
3216 mutex_unlock(&priv->mutex);
3221 flush_workqueue(priv->workqueue);
3223 /* start polling the killswitch state again */
3224 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
3225 round_jiffies_relative(2 * HZ));
3227 IWL_DEBUG_MAC80211(priv, "leave\n");
3230 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3232 struct iwl_priv *priv = hw->priv;
3234 IWL_DEBUG_MAC80211(priv, "enter\n");
3236 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3237 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3239 if (iwl3945_tx_skb(priv, skb))
3240 dev_kfree_skb_any(skb);
3242 IWL_DEBUG_MAC80211(priv, "leave\n");
3243 return NETDEV_TX_OK;
3246 void iwl3945_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
3250 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3253 /* The following should be done only at AP bring up */
3254 if (!(iwl_is_associated(priv))) {
3256 /* RXON - unassoc (to set timing command) */
3257 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3258 iwlcore_commit_rxon(priv);
3261 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3262 iwl_setup_rxon_timing(priv, vif);
3263 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3264 sizeof(priv->rxon_timing),
3265 &priv->rxon_timing);
3267 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3268 "Attempting to continue.\n");
3270 priv->staging_rxon.assoc_id = 0;
3272 if (vif->bss_conf.use_short_preamble)
3273 priv->staging_rxon.flags |=
3274 RXON_FLG_SHORT_PREAMBLE_MSK;
3276 priv->staging_rxon.flags &=
3277 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3279 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3280 if (vif->bss_conf.use_short_slot)
3281 priv->staging_rxon.flags |=
3282 RXON_FLG_SHORT_SLOT_MSK;
3284 priv->staging_rxon.flags &=
3285 ~RXON_FLG_SHORT_SLOT_MSK;
3287 /* restore RXON assoc */
3288 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3289 iwlcore_commit_rxon(priv);
3291 iwl3945_send_beacon_cmd(priv);
3293 /* FIXME - we need to add code here to detect a totally new
3294 * configuration, reset the AP, unassoc, rxon timing, assoc,
3295 * clear sta table, add BCAST sta... */
3298 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3299 struct ieee80211_vif *vif,
3300 struct ieee80211_sta *sta,
3301 struct ieee80211_key_conf *key)
3303 struct iwl_priv *priv = hw->priv;
3305 u8 sta_id = IWL_INVALID_STATION;
3308 IWL_DEBUG_MAC80211(priv, "enter\n");
3310 if (iwl3945_mod_params.sw_crypto) {
3311 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3315 static_key = !iwl_is_associated(priv);
3318 sta_id = iwl_sta_id_or_broadcast(priv, sta);
3319 if (sta_id == IWL_INVALID_STATION)
3323 mutex_lock(&priv->mutex);
3324 iwl_scan_cancel_timeout(priv, 100);
3329 ret = iwl3945_set_static_key(priv, key);
3331 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3332 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3336 ret = iwl3945_remove_static_key(priv);
3338 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3339 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3345 mutex_unlock(&priv->mutex);
3346 IWL_DEBUG_MAC80211(priv, "leave\n");
3351 static int iwl3945_mac_sta_add(struct ieee80211_hw *hw,
3352 struct ieee80211_vif *vif,
3353 struct ieee80211_sta *sta)
3355 struct iwl_priv *priv = hw->priv;
3356 struct iwl3945_sta_priv *sta_priv = (void *)sta->drv_priv;
3358 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3361 sta_priv->common.sta_id = IWL_INVALID_STATION;
3363 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3366 ret = iwl_add_station_common(priv, sta->addr, is_ap, &sta->ht_cap,
3369 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3371 /* Should we return success if return code is EEXIST ? */
3375 sta_priv->common.sta_id = sta_id;
3377 /* Initialize rate scaling */
3378 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3380 iwl3945_rs_rate_init(priv, sta, sta_id);
3384 /*****************************************************************************
3388 *****************************************************************************/
3390 #ifdef CONFIG_IWLWIFI_DEBUG
3393 * The following adds a new attribute to the sysfs representation
3394 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3395 * used for controlling the debug level.
3397 * See the level definitions in iwl for details.
3399 * The debug_level being managed using sysfs below is a per device debug
3400 * level that is used instead of the global debug level if it (the per
3401 * device debug level) is set.
3403 static ssize_t show_debug_level(struct device *d,
3404 struct device_attribute *attr, char *buf)
3406 struct iwl_priv *priv = dev_get_drvdata(d);
3407 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3409 static ssize_t store_debug_level(struct device *d,
3410 struct device_attribute *attr,
3411 const char *buf, size_t count)
3413 struct iwl_priv *priv = dev_get_drvdata(d);
3417 ret = strict_strtoul(buf, 0, &val);
3419 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3421 priv->debug_level = val;
3422 if (iwl_alloc_traffic_mem(priv))
3424 "Not enough memory to generate traffic log\n");
3426 return strnlen(buf, count);
3429 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3430 show_debug_level, store_debug_level);
3432 #endif /* CONFIG_IWLWIFI_DEBUG */
3434 static ssize_t show_temperature(struct device *d,
3435 struct device_attribute *attr, char *buf)
3437 struct iwl_priv *priv = dev_get_drvdata(d);
3439 if (!iwl_is_alive(priv))
3442 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3445 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3447 static ssize_t show_tx_power(struct device *d,
3448 struct device_attribute *attr, char *buf)
3450 struct iwl_priv *priv = dev_get_drvdata(d);
3451 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3454 static ssize_t store_tx_power(struct device *d,
3455 struct device_attribute *attr,
3456 const char *buf, size_t count)
3458 struct iwl_priv *priv = dev_get_drvdata(d);
3459 char *p = (char *)buf;
3462 val = simple_strtoul(p, &p, 10);
3464 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3466 iwl3945_hw_reg_set_txpower(priv, val);
3471 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3473 static ssize_t show_flags(struct device *d,
3474 struct device_attribute *attr, char *buf)
3476 struct iwl_priv *priv = dev_get_drvdata(d);
3478 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3481 static ssize_t store_flags(struct device *d,
3482 struct device_attribute *attr,
3483 const char *buf, size_t count)
3485 struct iwl_priv *priv = dev_get_drvdata(d);
3486 u32 flags = simple_strtoul(buf, NULL, 0);
3488 mutex_lock(&priv->mutex);
3489 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3490 /* Cancel any currently running scans... */
3491 if (iwl_scan_cancel_timeout(priv, 100))
3492 IWL_WARN(priv, "Could not cancel scan.\n");
3494 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3496 priv->staging_rxon.flags = cpu_to_le32(flags);
3497 iwlcore_commit_rxon(priv);
3500 mutex_unlock(&priv->mutex);
3505 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3507 static ssize_t show_filter_flags(struct device *d,
3508 struct device_attribute *attr, char *buf)
3510 struct iwl_priv *priv = dev_get_drvdata(d);
3512 return sprintf(buf, "0x%04X\n",
3513 le32_to_cpu(priv->active_rxon.filter_flags));
3516 static ssize_t store_filter_flags(struct device *d,
3517 struct device_attribute *attr,
3518 const char *buf, size_t count)
3520 struct iwl_priv *priv = dev_get_drvdata(d);
3521 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3523 mutex_lock(&priv->mutex);
3524 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3525 /* Cancel any currently running scans... */
3526 if (iwl_scan_cancel_timeout(priv, 100))
3527 IWL_WARN(priv, "Could not cancel scan.\n");
3529 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3530 "0x%04X\n", filter_flags);
3531 priv->staging_rxon.filter_flags =
3532 cpu_to_le32(filter_flags);
3533 iwlcore_commit_rxon(priv);
3536 mutex_unlock(&priv->mutex);
3541 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3542 store_filter_flags);
3544 static ssize_t show_measurement(struct device *d,
3545 struct device_attribute *attr, char *buf)
3547 struct iwl_priv *priv = dev_get_drvdata(d);
3548 struct iwl_spectrum_notification measure_report;
3549 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3550 u8 *data = (u8 *)&measure_report;
3551 unsigned long flags;
3553 spin_lock_irqsave(&priv->lock, flags);
3554 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3555 spin_unlock_irqrestore(&priv->lock, flags);
3558 memcpy(&measure_report, &priv->measure_report, size);
3559 priv->measurement_status = 0;
3560 spin_unlock_irqrestore(&priv->lock, flags);
3562 while (size && (PAGE_SIZE - len)) {
3563 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3564 PAGE_SIZE - len, 1);
3566 if (PAGE_SIZE - len)
3570 size -= min(size, 16U);
3576 static ssize_t store_measurement(struct device *d,
3577 struct device_attribute *attr,
3578 const char *buf, size_t count)
3580 struct iwl_priv *priv = dev_get_drvdata(d);
3581 struct ieee80211_measurement_params params = {
3582 .channel = le16_to_cpu(priv->active_rxon.channel),
3583 .start_time = cpu_to_le64(priv->_3945.last_tsf),
3584 .duration = cpu_to_le16(1),
3586 u8 type = IWL_MEASURE_BASIC;
3592 strncpy(buffer, buf, min(sizeof(buffer), count));
3593 channel = simple_strtoul(p, NULL, 0);
3595 params.channel = channel;
3598 while (*p && *p != ' ')
3601 type = simple_strtoul(p + 1, NULL, 0);
3604 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3605 "channel %d (for '%s')\n", type, params.channel, buf);
3606 iwl3945_get_measurement(priv, ¶ms, type);
3611 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3612 show_measurement, store_measurement);
3614 static ssize_t store_retry_rate(struct device *d,
3615 struct device_attribute *attr,
3616 const char *buf, size_t count)
3618 struct iwl_priv *priv = dev_get_drvdata(d);
3620 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3621 if (priv->retry_rate <= 0)
3622 priv->retry_rate = 1;
3627 static ssize_t show_retry_rate(struct device *d,
3628 struct device_attribute *attr, char *buf)
3630 struct iwl_priv *priv = dev_get_drvdata(d);
3631 return sprintf(buf, "%d", priv->retry_rate);
3634 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3638 static ssize_t show_channels(struct device *d,
3639 struct device_attribute *attr, char *buf)
3641 /* all this shit doesn't belong into sysfs anyway */
3645 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3647 static ssize_t show_antenna(struct device *d,
3648 struct device_attribute *attr, char *buf)
3650 struct iwl_priv *priv = dev_get_drvdata(d);
3652 if (!iwl_is_alive(priv))
3655 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3658 static ssize_t store_antenna(struct device *d,
3659 struct device_attribute *attr,
3660 const char *buf, size_t count)
3662 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3668 if (sscanf(buf, "%1i", &ant) != 1) {
3669 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3673 if ((ant >= 0) && (ant <= 2)) {
3674 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3675 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3677 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3683 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3685 static ssize_t show_status(struct device *d,
3686 struct device_attribute *attr, char *buf)
3688 struct iwl_priv *priv = dev_get_drvdata(d);
3689 if (!iwl_is_alive(priv))
3691 return sprintf(buf, "0x%08x\n", (int)priv->status);
3694 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3696 static ssize_t dump_error_log(struct device *d,
3697 struct device_attribute *attr,
3698 const char *buf, size_t count)
3700 struct iwl_priv *priv = dev_get_drvdata(d);
3701 char *p = (char *)buf;
3704 iwl3945_dump_nic_error_log(priv);
3706 return strnlen(buf, count);
3709 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3711 /*****************************************************************************
3713 * driver setup and tear down
3715 *****************************************************************************/
3717 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3719 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3721 init_waitqueue_head(&priv->wait_command_queue);
3723 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3724 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3725 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3726 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3727 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3728 INIT_DELAYED_WORK(&priv->_3945.rfkill_poll, iwl3945_rfkill_poll);
3729 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3730 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3731 INIT_WORK(&priv->start_internal_scan, iwl_bg_start_internal_scan);
3732 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3734 iwl3945_hw_setup_deferred_work(priv);
3736 if (priv->cfg->ops->lib->recover_from_tx_stall) {
3737 init_timer(&priv->monitor_recover);
3738 priv->monitor_recover.data = (unsigned long)priv;
3739 priv->monitor_recover.function =
3740 priv->cfg->ops->lib->recover_from_tx_stall;
3743 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3744 iwl3945_irq_tasklet, (unsigned long)priv);
3747 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3749 iwl3945_hw_cancel_deferred_work(priv);
3751 cancel_delayed_work_sync(&priv->init_alive_start);
3752 cancel_delayed_work(&priv->scan_check);
3753 cancel_delayed_work(&priv->alive_start);
3754 cancel_work_sync(&priv->start_internal_scan);
3755 cancel_work_sync(&priv->beacon_update);
3756 if (priv->cfg->ops->lib->recover_from_tx_stall)
3757 del_timer_sync(&priv->monitor_recover);
3760 static struct attribute *iwl3945_sysfs_entries[] = {
3761 &dev_attr_antenna.attr,
3762 &dev_attr_channels.attr,
3763 &dev_attr_dump_errors.attr,
3764 &dev_attr_flags.attr,
3765 &dev_attr_filter_flags.attr,
3766 &dev_attr_measurement.attr,
3767 &dev_attr_retry_rate.attr,
3768 &dev_attr_status.attr,
3769 &dev_attr_temperature.attr,
3770 &dev_attr_tx_power.attr,
3771 #ifdef CONFIG_IWLWIFI_DEBUG
3772 &dev_attr_debug_level.attr,
3777 static struct attribute_group iwl3945_attribute_group = {
3778 .name = NULL, /* put in device directory */
3779 .attrs = iwl3945_sysfs_entries,
3782 static struct ieee80211_ops iwl3945_hw_ops = {
3783 .tx = iwl3945_mac_tx,
3784 .start = iwl3945_mac_start,
3785 .stop = iwl3945_mac_stop,
3786 .add_interface = iwl_mac_add_interface,
3787 .remove_interface = iwl_mac_remove_interface,
3788 .config = iwl_mac_config,
3789 .configure_filter = iwl_configure_filter,
3790 .set_key = iwl3945_mac_set_key,
3791 .conf_tx = iwl_mac_conf_tx,
3792 .reset_tsf = iwl_mac_reset_tsf,
3793 .bss_info_changed = iwl_bss_info_changed,
3794 .hw_scan = iwl_mac_hw_scan,
3795 .sta_add = iwl3945_mac_sta_add,
3796 .sta_remove = iwl_mac_sta_remove,
3799 static int iwl3945_init_drv(struct iwl_priv *priv)
3802 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3804 priv->retry_rate = 1;
3805 priv->ibss_beacon = NULL;
3807 spin_lock_init(&priv->sta_lock);
3808 spin_lock_init(&priv->hcmd_lock);
3810 INIT_LIST_HEAD(&priv->free_frames);
3812 mutex_init(&priv->mutex);
3813 mutex_init(&priv->sync_cmd_mutex);
3815 priv->ieee_channels = NULL;
3816 priv->ieee_rates = NULL;
3817 priv->band = IEEE80211_BAND_2GHZ;
3819 priv->iw_mode = NL80211_IFTYPE_STATION;
3820 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3822 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3824 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3825 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3830 ret = iwl_init_channel_map(priv);
3832 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3836 /* Set up txpower settings in driver for all channels */
3837 if (iwl3945_txpower_set_from_eeprom(priv)) {
3839 goto err_free_channel_map;
3842 ret = iwlcore_init_geos(priv);
3844 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3845 goto err_free_channel_map;
3847 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3851 err_free_channel_map:
3852 iwl_free_channel_map(priv);
3857 #define IWL3945_MAX_PROBE_REQUEST 200
3859 static int iwl3945_setup_mac(struct iwl_priv *priv)
3862 struct ieee80211_hw *hw = priv->hw;
3864 hw->rate_control_algorithm = "iwl-3945-rs";
3865 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3866 hw->vif_data_size = sizeof(struct iwl_vif_priv);
3868 /* Tell mac80211 our characteristics */
3869 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3870 IEEE80211_HW_SPECTRUM_MGMT;
3872 if (!priv->cfg->broken_powersave)
3873 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3874 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3876 hw->wiphy->interface_modes =
3877 BIT(NL80211_IFTYPE_STATION) |
3878 BIT(NL80211_IFTYPE_ADHOC);
3880 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3881 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3883 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3884 /* we create the 802.11 header and a zero-length SSID element */
3885 hw->wiphy->max_scan_ie_len = IWL3945_MAX_PROBE_REQUEST - 24 - 2;
3887 /* Default value; 4 EDCA QOS priorities */
3890 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3891 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3892 &priv->bands[IEEE80211_BAND_2GHZ];
3894 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3895 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3896 &priv->bands[IEEE80211_BAND_5GHZ];
3898 ret = ieee80211_register_hw(priv->hw);
3900 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3903 priv->mac80211_registered = 1;
3908 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3911 struct iwl_priv *priv;
3912 struct ieee80211_hw *hw;
3913 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3914 struct iwl3945_eeprom *eeprom;
3915 unsigned long flags;
3917 /***********************
3918 * 1. Allocating HW data
3919 * ********************/
3921 /* mac80211 allocates memory for this device instance, including
3922 * space for this driver's private structure */
3923 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3925 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3930 SET_IEEE80211_DEV(hw, &pdev->dev);
3933 * Disabling hardware scan means that mac80211 will perform scans
3934 * "the hard way", rather than using device's scan.
3936 if (iwl3945_mod_params.disable_hw_scan) {
3937 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3938 iwl3945_hw_ops.hw_scan = NULL;
3942 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3944 priv->pci_dev = pdev;
3945 priv->inta_mask = CSR_INI_SET_MASK;
3947 #ifdef CONFIG_IWLWIFI_DEBUG
3948 atomic_set(&priv->restrict_refcnt, 0);
3950 if (iwl_alloc_traffic_mem(priv))
3951 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3953 /***************************
3954 * 2. Initializing PCI bus
3955 * *************************/
3956 if (pci_enable_device(pdev)) {
3958 goto out_ieee80211_free_hw;
3961 pci_set_master(pdev);
3963 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3965 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3967 IWL_WARN(priv, "No suitable DMA available.\n");
3968 goto out_pci_disable_device;
3971 pci_set_drvdata(pdev, priv);
3972 err = pci_request_regions(pdev, DRV_NAME);
3974 goto out_pci_disable_device;
3976 /***********************
3977 * 3. Read REV Register
3978 * ********************/
3979 priv->hw_base = pci_iomap(pdev, 0, 0);
3980 if (!priv->hw_base) {
3982 goto out_pci_release_regions;
3985 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3986 (unsigned long long) pci_resource_len(pdev, 0));
3987 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3989 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3990 * PCI Tx retries from interfering with C3 CPU state */
3991 pci_write_config_byte(pdev, 0x41, 0x00);
3993 /* these spin locks will be used in apm_ops.init and EEPROM access
3994 * we should init now
3996 spin_lock_init(&priv->reg_lock);
3997 spin_lock_init(&priv->lock);
4000 * stop and reset the on-board processor just in case it is in a
4001 * strange state ... like being left stranded by a primary kernel
4002 * and this is now the kdump kernel trying to start up
4004 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4006 /***********************
4008 * ********************/
4010 /* Read the EEPROM */
4011 err = iwl_eeprom_init(priv);
4013 IWL_ERR(priv, "Unable to init EEPROM\n");
4016 /* MAC Address location in EEPROM same for 3945/4965 */
4017 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4018 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4019 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4020 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4022 /***********************
4023 * 5. Setup HW Constants
4024 * ********************/
4025 /* Device-specific setup */
4026 if (iwl3945_hw_set_hw_params(priv)) {
4027 IWL_ERR(priv, "failed to set hw settings\n");
4028 goto out_eeprom_free;
4031 /***********************
4033 * ********************/
4035 err = iwl3945_init_drv(priv);
4037 IWL_ERR(priv, "initializing driver failed\n");
4038 goto out_unset_hw_params;
4041 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4044 /***********************
4046 * ********************/
4048 spin_lock_irqsave(&priv->lock, flags);
4049 iwl_disable_interrupts(priv);
4050 spin_unlock_irqrestore(&priv->lock, flags);
4052 pci_enable_msi(priv->pci_dev);
4054 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4055 IRQF_SHARED, DRV_NAME, priv);
4057 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4058 goto out_disable_msi;
4061 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4063 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4064 goto out_release_irq;
4067 iwl_set_rxon_channel(priv,
4068 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4069 iwl3945_setup_deferred_work(priv);
4070 iwl3945_setup_rx_handlers(priv);
4071 iwl_power_initialize(priv);
4073 /*********************************
4074 * 8. Setup and Register mac80211
4075 * *******************************/
4077 iwl_enable_interrupts(priv);
4079 err = iwl3945_setup_mac(priv);
4081 goto out_remove_sysfs;
4083 err = iwl_dbgfs_register(priv, DRV_NAME);
4085 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4087 /* Start monitoring the killswitch */
4088 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
4094 destroy_workqueue(priv->workqueue);
4095 priv->workqueue = NULL;
4096 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4098 free_irq(priv->pci_dev->irq, priv);
4100 pci_disable_msi(priv->pci_dev);
4101 iwlcore_free_geos(priv);
4102 iwl_free_channel_map(priv);
4103 out_unset_hw_params:
4104 iwl3945_unset_hw_params(priv);
4106 iwl_eeprom_free(priv);
4108 pci_iounmap(pdev, priv->hw_base);
4109 out_pci_release_regions:
4110 pci_release_regions(pdev);
4111 out_pci_disable_device:
4112 pci_set_drvdata(pdev, NULL);
4113 pci_disable_device(pdev);
4114 out_ieee80211_free_hw:
4115 iwl_free_traffic_mem(priv);
4116 ieee80211_free_hw(priv->hw);
4121 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4123 struct iwl_priv *priv = pci_get_drvdata(pdev);
4124 unsigned long flags;
4129 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4131 iwl_dbgfs_unregister(priv);
4133 set_bit(STATUS_EXIT_PENDING, &priv->status);
4135 if (priv->mac80211_registered) {
4136 ieee80211_unregister_hw(priv->hw);
4137 priv->mac80211_registered = 0;
4143 * Make sure device is reset to low power before unloading driver.
4144 * This may be redundant with iwl_down(), but there are paths to
4145 * run iwl_down() without calling apm_ops.stop(), and there are
4146 * paths to avoid running iwl_down() at all before leaving driver.
4147 * This (inexpensive) call *makes sure* device is reset.
4149 priv->cfg->ops->lib->apm_ops.stop(priv);
4151 /* make sure we flush any pending irq or
4152 * tasklet for the driver
4154 spin_lock_irqsave(&priv->lock, flags);
4155 iwl_disable_interrupts(priv);
4156 spin_unlock_irqrestore(&priv->lock, flags);
4158 iwl_synchronize_irq(priv);
4160 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4162 cancel_delayed_work_sync(&priv->_3945.rfkill_poll);
4164 iwl3945_dealloc_ucode_pci(priv);
4167 iwl3945_rx_queue_free(priv, &priv->rxq);
4168 iwl3945_hw_txq_ctx_free(priv);
4170 iwl3945_unset_hw_params(priv);
4172 /*netif_stop_queue(dev); */
4173 flush_workqueue(priv->workqueue);
4175 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4176 * priv->workqueue... so we can't take down the workqueue
4178 destroy_workqueue(priv->workqueue);
4179 priv->workqueue = NULL;
4180 iwl_free_traffic_mem(priv);
4182 free_irq(pdev->irq, priv);
4183 pci_disable_msi(pdev);
4185 pci_iounmap(pdev, priv->hw_base);
4186 pci_release_regions(pdev);
4187 pci_disable_device(pdev);
4188 pci_set_drvdata(pdev, NULL);
4190 iwl_free_channel_map(priv);
4191 iwlcore_free_geos(priv);
4192 kfree(priv->scan_cmd);
4193 if (priv->ibss_beacon)
4194 dev_kfree_skb(priv->ibss_beacon);
4196 ieee80211_free_hw(priv->hw);
4200 /*****************************************************************************
4202 * driver and module entry point
4204 *****************************************************************************/
4206 static struct pci_driver iwl3945_driver = {
4208 .id_table = iwl3945_hw_card_ids,
4209 .probe = iwl3945_pci_probe,
4210 .remove = __devexit_p(iwl3945_pci_remove),
4212 .suspend = iwl_pci_suspend,
4213 .resume = iwl_pci_resume,
4217 static int __init iwl3945_init(void)
4221 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4222 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4224 ret = iwl3945_rate_control_register();
4226 printk(KERN_ERR DRV_NAME
4227 "Unable to register rate control algorithm: %d\n", ret);
4231 ret = pci_register_driver(&iwl3945_driver);
4233 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4234 goto error_register;
4240 iwl3945_rate_control_unregister();
4244 static void __exit iwl3945_exit(void)
4246 pci_unregister_driver(&iwl3945_driver);
4247 iwl3945_rate_control_unregister();
4250 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4252 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4253 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4254 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4255 MODULE_PARM_DESC(swcrypto,
4256 "using software crypto (default 1 [software])\n");
4257 #ifdef CONFIG_IWLWIFI_DEBUG
4258 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4259 MODULE_PARM_DESC(debug, "debug output mask");
4261 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4263 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4264 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4265 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4267 module_exit(iwl3945_exit);
4268 module_init(iwl3945_init);