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 = 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 dma_unmap_addr_set(out_meta, mapping, txcmd_phys);
623 dma_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 static int iwl3945_get_measurement(struct iwl_priv *priv,
669 struct ieee80211_measurement_params *params,
672 struct iwl_spectrum_cmd spectrum;
673 struct iwl_rx_packet *pkt;
674 struct iwl_host_cmd cmd = {
675 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
676 .data = (void *)&spectrum,
677 .flags = CMD_WANT_SKB,
679 u32 add_time = le64_to_cpu(params->start_time);
681 int spectrum_resp_status;
682 int duration = le16_to_cpu(params->duration);
684 if (iwl_is_associated(priv))
685 add_time = iwl_usecs_to_beacons(priv,
686 le64_to_cpu(params->start_time) - priv->_3945.last_tsf,
687 le16_to_cpu(priv->rxon_timing.beacon_interval));
689 memset(&spectrum, 0, sizeof(spectrum));
691 spectrum.channel_count = cpu_to_le16(1);
693 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
694 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
695 cmd.len = sizeof(spectrum);
696 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
698 if (iwl_is_associated(priv))
699 spectrum.start_time =
700 iwl_add_beacon_time(priv,
701 priv->_3945.last_beacon_time, add_time,
702 le16_to_cpu(priv->rxon_timing.beacon_interval));
704 spectrum.start_time = 0;
706 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
707 spectrum.channels[0].channel = params->channel;
708 spectrum.channels[0].type = type;
709 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
710 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
711 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
713 rc = iwl_send_cmd_sync(priv, &cmd);
717 pkt = (struct iwl_rx_packet *)cmd.reply_page;
718 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
719 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
723 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
724 switch (spectrum_resp_status) {
725 case 0: /* Command will be handled */
726 if (pkt->u.spectrum.id != 0xff) {
727 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
729 priv->measurement_status &= ~MEASUREMENT_READY;
731 priv->measurement_status |= MEASUREMENT_ACTIVE;
735 case 1: /* Command will not be handled */
740 iwl_free_pages(priv, cmd.reply_page);
745 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
746 struct iwl_rx_mem_buffer *rxb)
748 struct iwl_rx_packet *pkt = rxb_addr(rxb);
749 struct iwl_alive_resp *palive;
750 struct delayed_work *pwork;
752 palive = &pkt->u.alive_frame;
754 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
756 palive->is_valid, palive->ver_type,
757 palive->ver_subtype);
759 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
760 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
761 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
762 sizeof(struct iwl_alive_resp));
763 pwork = &priv->init_alive_start;
765 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
766 memcpy(&priv->card_alive, &pkt->u.alive_frame,
767 sizeof(struct iwl_alive_resp));
768 pwork = &priv->alive_start;
769 iwl3945_disable_events(priv);
772 /* We delay the ALIVE response by 5ms to
773 * give the HW RF Kill time to activate... */
774 if (palive->is_valid == UCODE_VALID_OK)
775 queue_delayed_work(priv->workqueue, pwork,
776 msecs_to_jiffies(5));
778 IWL_WARN(priv, "uCode did not respond OK.\n");
781 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
782 struct iwl_rx_mem_buffer *rxb)
784 #ifdef CONFIG_IWLWIFI_DEBUG
785 struct iwl_rx_packet *pkt = rxb_addr(rxb);
788 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
791 static void iwl3945_bg_beacon_update(struct work_struct *work)
793 struct iwl_priv *priv =
794 container_of(work, struct iwl_priv, beacon_update);
795 struct sk_buff *beacon;
797 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
798 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
801 IWL_ERR(priv, "update beacon failed\n");
805 mutex_lock(&priv->mutex);
806 /* new beacon skb is allocated every time; dispose previous.*/
807 if (priv->ibss_beacon)
808 dev_kfree_skb(priv->ibss_beacon);
810 priv->ibss_beacon = beacon;
811 mutex_unlock(&priv->mutex);
813 iwl3945_send_beacon_cmd(priv);
816 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
817 struct iwl_rx_mem_buffer *rxb)
819 #ifdef CONFIG_IWLWIFI_DEBUG
820 struct iwl_rx_packet *pkt = rxb_addr(rxb);
821 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
822 u8 rate = beacon->beacon_notify_hdr.rate;
824 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
825 "tsf %d %d rate %d\n",
826 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
827 beacon->beacon_notify_hdr.failure_frame,
828 le32_to_cpu(beacon->ibss_mgr_status),
829 le32_to_cpu(beacon->high_tsf),
830 le32_to_cpu(beacon->low_tsf), rate);
833 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
834 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
835 queue_work(priv->workqueue, &priv->beacon_update);
838 /* Handle notification from uCode that card's power state is changing
839 * due to software, hardware, or critical temperature RFKILL */
840 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
841 struct iwl_rx_mem_buffer *rxb)
843 struct iwl_rx_packet *pkt = rxb_addr(rxb);
844 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
845 unsigned long status = priv->status;
847 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
848 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
849 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
851 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
852 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
854 if (flags & HW_CARD_DISABLED)
855 set_bit(STATUS_RF_KILL_HW, &priv->status);
857 clear_bit(STATUS_RF_KILL_HW, &priv->status);
860 iwl_scan_cancel(priv);
862 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
863 test_bit(STATUS_RF_KILL_HW, &priv->status)))
864 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
865 test_bit(STATUS_RF_KILL_HW, &priv->status));
867 wake_up_interruptible(&priv->wait_command_queue);
871 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
873 * Setup the RX handlers for each of the reply types sent from the uCode
876 * This function chains into the hardware specific files for them to setup
877 * any hardware specific handlers as well.
879 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
881 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
882 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
883 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
884 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
885 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
886 iwl_rx_spectrum_measure_notif;
887 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
888 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
889 iwl_rx_pm_debug_statistics_notif;
890 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
893 * The same handler is used for both the REPLY to a discrete
894 * statistics request from the host as well as for the periodic
895 * statistics notifications (after received beacons) from the uCode.
897 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_reply_statistics;
898 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
900 iwl_setup_rx_scan_handlers(priv);
901 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
903 /* Set up hardware specific Rx handlers */
904 iwl3945_hw_rx_handler_setup(priv);
907 /************************** RX-FUNCTIONS ****************************/
909 * Rx theory of operation
911 * The host allocates 32 DMA target addresses and passes the host address
912 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
916 * The host/firmware share two index registers for managing the Rx buffers.
918 * The READ index maps to the first position that the firmware may be writing
919 * to -- the driver can read up to (but not including) this position and get
921 * The READ index is managed by the firmware once the card is enabled.
923 * The WRITE index maps to the last position the driver has read from -- the
924 * position preceding WRITE is the last slot the firmware can place a packet.
926 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
929 * During initialization, the host sets up the READ queue position to the first
930 * INDEX position, and WRITE to the last (READ - 1 wrapped)
932 * When the firmware places a packet in a buffer, it will advance the READ index
933 * and fire the RX interrupt. The driver can then query the READ index and
934 * process as many packets as possible, moving the WRITE index forward as it
935 * resets the Rx queue buffers with new memory.
937 * The management in the driver is as follows:
938 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
939 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
940 * to replenish the iwl->rxq->rx_free.
941 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
942 * iwl->rxq is replenished and the READ INDEX is updated (updating the
943 * 'processed' and 'read' driver indexes as well)
944 * + A received packet is processed and handed to the kernel network stack,
945 * detached from the iwl->rxq. The driver 'processed' index is updated.
946 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
947 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
948 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
949 * were enough free buffers and RX_STALLED is set it is cleared.
954 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
955 * iwl3945_rx_queue_restock
956 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
957 * queue, updates firmware pointers, and updates
958 * the WRITE index. If insufficient rx_free buffers
959 * are available, schedules iwl3945_rx_replenish
961 * -- enable interrupts --
962 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
963 * READ INDEX, detaching the SKB from the pool.
964 * Moves the packet buffer from queue to rx_used.
965 * Calls iwl3945_rx_queue_restock to refill any empty
972 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
974 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
977 return cpu_to_le32((u32)dma_addr);
981 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
983 * If there are slots in the RX queue that need to be restocked,
984 * and we have free pre-allocated buffers, fill the ranks as much
985 * as we can, pulling from rx_free.
987 * This moves the 'write' index forward to catch up with 'processed', and
988 * also updates the memory address in the firmware to reference the new
991 static void iwl3945_rx_queue_restock(struct iwl_priv *priv)
993 struct iwl_rx_queue *rxq = &priv->rxq;
994 struct list_head *element;
995 struct iwl_rx_mem_buffer *rxb;
999 spin_lock_irqsave(&rxq->lock, flags);
1000 write = rxq->write & ~0x7;
1001 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1002 /* Get next free Rx buffer, remove from free list */
1003 element = rxq->rx_free.next;
1004 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1007 /* Point to Rx buffer via next RBD in circular buffer */
1008 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1009 rxq->queue[rxq->write] = rxb;
1010 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1013 spin_unlock_irqrestore(&rxq->lock, flags);
1014 /* If the pre-allocated buffer pool is dropping low, schedule to
1016 if (rxq->free_count <= RX_LOW_WATERMARK)
1017 queue_work(priv->workqueue, &priv->rx_replenish);
1020 /* If we've added more space for the firmware to place data, tell it.
1021 * Increment device's write pointer in multiples of 8. */
1022 if ((rxq->write_actual != (rxq->write & ~0x7))
1023 || (abs(rxq->write - rxq->read) > 7)) {
1024 spin_lock_irqsave(&rxq->lock, flags);
1025 rxq->need_update = 1;
1026 spin_unlock_irqrestore(&rxq->lock, flags);
1027 iwl_rx_queue_update_write_ptr(priv, rxq);
1032 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1034 * When moving to rx_free an SKB is allocated for the slot.
1036 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1037 * This is called as a scheduled work item (except for during initialization)
1039 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1041 struct iwl_rx_queue *rxq = &priv->rxq;
1042 struct list_head *element;
1043 struct iwl_rx_mem_buffer *rxb;
1045 unsigned long flags;
1046 gfp_t gfp_mask = priority;
1049 spin_lock_irqsave(&rxq->lock, flags);
1051 if (list_empty(&rxq->rx_used)) {
1052 spin_unlock_irqrestore(&rxq->lock, flags);
1055 spin_unlock_irqrestore(&rxq->lock, flags);
1057 if (rxq->free_count > RX_LOW_WATERMARK)
1058 gfp_mask |= __GFP_NOWARN;
1060 if (priv->hw_params.rx_page_order > 0)
1061 gfp_mask |= __GFP_COMP;
1063 /* Alloc a new receive buffer */
1064 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1066 if (net_ratelimit())
1067 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1068 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1070 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1071 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1073 /* We don't reschedule replenish work here -- we will
1074 * call the restock method and if it still needs
1075 * more buffers it will schedule replenish */
1079 spin_lock_irqsave(&rxq->lock, flags);
1080 if (list_empty(&rxq->rx_used)) {
1081 spin_unlock_irqrestore(&rxq->lock, flags);
1082 __free_pages(page, priv->hw_params.rx_page_order);
1085 element = rxq->rx_used.next;
1086 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1088 spin_unlock_irqrestore(&rxq->lock, flags);
1091 /* Get physical address of RB/SKB */
1092 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1093 PAGE_SIZE << priv->hw_params.rx_page_order,
1094 PCI_DMA_FROMDEVICE);
1096 spin_lock_irqsave(&rxq->lock, flags);
1098 list_add_tail(&rxb->list, &rxq->rx_free);
1100 priv->alloc_rxb_page++;
1102 spin_unlock_irqrestore(&rxq->lock, flags);
1106 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1108 unsigned long flags;
1110 spin_lock_irqsave(&rxq->lock, flags);
1111 INIT_LIST_HEAD(&rxq->rx_free);
1112 INIT_LIST_HEAD(&rxq->rx_used);
1113 /* Fill the rx_used queue with _all_ of the Rx buffers */
1114 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1115 /* In the reset function, these buffers may have been allocated
1116 * to an SKB, so we need to unmap and free potential storage */
1117 if (rxq->pool[i].page != NULL) {
1118 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1119 PAGE_SIZE << priv->hw_params.rx_page_order,
1120 PCI_DMA_FROMDEVICE);
1121 __iwl_free_pages(priv, rxq->pool[i].page);
1122 rxq->pool[i].page = NULL;
1124 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1127 /* Set us so that we have processed and used all buffers, but have
1128 * not restocked the Rx queue with fresh buffers */
1129 rxq->read = rxq->write = 0;
1130 rxq->write_actual = 0;
1131 rxq->free_count = 0;
1132 spin_unlock_irqrestore(&rxq->lock, flags);
1135 void iwl3945_rx_replenish(void *data)
1137 struct iwl_priv *priv = data;
1138 unsigned long flags;
1140 iwl3945_rx_allocate(priv, GFP_KERNEL);
1142 spin_lock_irqsave(&priv->lock, flags);
1143 iwl3945_rx_queue_restock(priv);
1144 spin_unlock_irqrestore(&priv->lock, flags);
1147 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1149 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1151 iwl3945_rx_queue_restock(priv);
1155 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1156 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1157 * This free routine walks the list of POOL entries and if SKB is set to
1158 * non NULL it is unmapped and freed
1160 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1163 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1164 if (rxq->pool[i].page != NULL) {
1165 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1166 PAGE_SIZE << priv->hw_params.rx_page_order,
1167 PCI_DMA_FROMDEVICE);
1168 __iwl_free_pages(priv, rxq->pool[i].page);
1169 rxq->pool[i].page = NULL;
1173 dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1175 dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
1176 rxq->rb_stts, rxq->rb_stts_dma);
1178 rxq->rb_stts = NULL;
1182 /* Convert linear signal-to-noise ratio into dB */
1183 static u8 ratio2dB[100] = {
1184 /* 0 1 2 3 4 5 6 7 8 9 */
1185 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1186 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1187 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1188 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1189 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1190 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1191 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1192 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1193 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1194 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1197 /* Calculates a relative dB value from a ratio of linear
1198 * (i.e. not dB) signal levels.
1199 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1200 int iwl3945_calc_db_from_ratio(int sig_ratio)
1202 /* 1000:1 or higher just report as 60 dB */
1203 if (sig_ratio >= 1000)
1206 /* 100:1 or higher, divide by 10 and use table,
1207 * add 20 dB to make up for divide by 10 */
1208 if (sig_ratio >= 100)
1209 return 20 + (int)ratio2dB[sig_ratio/10];
1211 /* We shouldn't see this */
1215 /* Use table for ratios 1:1 - 99:1 */
1216 return (int)ratio2dB[sig_ratio];
1220 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1222 * Uses the priv->rx_handlers callback function array to invoke
1223 * the appropriate handlers, including command responses,
1224 * frame-received notifications, and other notifications.
1226 static void iwl3945_rx_handle(struct iwl_priv *priv)
1228 struct iwl_rx_mem_buffer *rxb;
1229 struct iwl_rx_packet *pkt;
1230 struct iwl_rx_queue *rxq = &priv->rxq;
1233 unsigned long flags;
1236 int total_empty = 0;
1238 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1239 * buffer that the driver may process (last buffer filled by ucode). */
1240 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1243 /* calculate total frames need to be restock after handling RX */
1244 total_empty = r - rxq->write_actual;
1245 if (total_empty < 0)
1246 total_empty += RX_QUEUE_SIZE;
1248 if (total_empty > (RX_QUEUE_SIZE / 2))
1250 /* Rx interrupt, but nothing sent from uCode */
1252 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1255 rxb = rxq->queue[i];
1257 /* If an RXB doesn't have a Rx queue slot associated with it,
1258 * then a bug has been introduced in the queue refilling
1259 * routines -- catch it here */
1260 BUG_ON(rxb == NULL);
1262 rxq->queue[i] = NULL;
1264 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1265 PAGE_SIZE << priv->hw_params.rx_page_order,
1266 PCI_DMA_FROMDEVICE);
1267 pkt = rxb_addr(rxb);
1269 trace_iwlwifi_dev_rx(priv, pkt,
1270 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1272 /* Reclaim a command buffer only if this packet is a response
1273 * to a (driver-originated) command.
1274 * If the packet (e.g. Rx frame) originated from uCode,
1275 * there is no command buffer to reclaim.
1276 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1277 * but apparently a few don't get set; catch them here. */
1278 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1279 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1280 (pkt->hdr.cmd != REPLY_TX);
1282 /* Based on type of command response or notification,
1283 * handle those that need handling via function in
1284 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1285 if (priv->rx_handlers[pkt->hdr.cmd]) {
1286 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1287 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1288 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1289 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1291 /* No handling needed */
1293 "r %d i %d No handler needed for %s, 0x%02x\n",
1294 r, i, get_cmd_string(pkt->hdr.cmd),
1299 * XXX: After here, we should always check rxb->page
1300 * against NULL before touching it or its virtual
1301 * memory (pkt). Because some rx_handler might have
1302 * already taken or freed the pages.
1306 /* Invoke any callbacks, transfer the buffer to caller,
1307 * and fire off the (possibly) blocking iwl_send_cmd()
1308 * as we reclaim the driver command queue */
1310 iwl_tx_cmd_complete(priv, rxb);
1312 IWL_WARN(priv, "Claim null rxb?\n");
1315 /* Reuse the page if possible. For notification packets and
1316 * SKBs that fail to Rx correctly, add them back into the
1317 * rx_free list for reuse later. */
1318 spin_lock_irqsave(&rxq->lock, flags);
1319 if (rxb->page != NULL) {
1320 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1321 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1322 PCI_DMA_FROMDEVICE);
1323 list_add_tail(&rxb->list, &rxq->rx_free);
1326 list_add_tail(&rxb->list, &rxq->rx_used);
1328 spin_unlock_irqrestore(&rxq->lock, flags);
1330 i = (i + 1) & RX_QUEUE_MASK;
1331 /* If there are a lot of unused frames,
1332 * restock the Rx queue so ucode won't assert. */
1337 iwl3945_rx_replenish_now(priv);
1343 /* Backtrack one entry */
1346 iwl3945_rx_replenish_now(priv);
1348 iwl3945_rx_queue_restock(priv);
1351 /* call this function to flush any scheduled tasklet */
1352 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1354 /* wait to make sure we flush pending tasklet*/
1355 synchronize_irq(priv->pci_dev->irq);
1356 tasklet_kill(&priv->irq_tasklet);
1359 static const char *desc_lookup(int i)
1367 return "BAD_CHECKSUM";
1369 return "NMI_INTERRUPT";
1373 return "FATAL_ERROR";
1379 #define ERROR_START_OFFSET (1 * sizeof(u32))
1380 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1382 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1385 u32 desc, time, count, base, data1;
1386 u32 blink1, blink2, ilink1, ilink2;
1388 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1390 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1391 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1396 count = iwl_read_targ_mem(priv, base);
1398 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1399 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1400 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1401 priv->status, count);
1404 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1405 "ilink1 nmiPC Line\n");
1406 for (i = ERROR_START_OFFSET;
1407 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1408 i += ERROR_ELEM_SIZE) {
1409 desc = iwl_read_targ_mem(priv, base + i);
1411 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1413 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1415 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1417 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1419 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1421 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1424 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1425 desc_lookup(desc), desc, time, blink1, blink2,
1426 ilink1, ilink2, data1);
1427 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1428 0, blink1, blink2, ilink1, ilink2);
1432 #define EVENT_START_OFFSET (6 * sizeof(u32))
1435 * iwl3945_print_event_log - Dump error event log to syslog
1438 static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1439 u32 num_events, u32 mode,
1440 int pos, char **buf, size_t bufsz)
1443 u32 base; /* SRAM byte address of event log header */
1444 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1445 u32 ptr; /* SRAM byte address of log data */
1446 u32 ev, time, data; /* event log data */
1447 unsigned long reg_flags;
1449 if (num_events == 0)
1452 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1455 event_size = 2 * sizeof(u32);
1457 event_size = 3 * sizeof(u32);
1459 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1461 /* Make sure device is powered up for SRAM reads */
1462 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1463 iwl_grab_nic_access(priv);
1465 /* Set starting address; reads will auto-increment */
1466 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1469 /* "time" is actually "data" for mode 0 (no timestamp).
1470 * place event id # at far right for easier visual parsing. */
1471 for (i = 0; i < num_events; i++) {
1472 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1473 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1477 pos += scnprintf(*buf + pos, bufsz - pos,
1481 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1482 trace_iwlwifi_dev_ucode_event(priv, 0,
1486 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1488 pos += scnprintf(*buf + pos, bufsz - pos,
1489 "%010u:0x%08x:%04u\n",
1492 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
1494 trace_iwlwifi_dev_ucode_event(priv, time,
1500 /* Allow device to power down */
1501 iwl_release_nic_access(priv);
1502 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1507 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1509 static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1510 u32 num_wraps, u32 next_entry,
1512 int pos, char **buf, size_t bufsz)
1515 * display the newest DEFAULT_LOG_ENTRIES entries
1516 * i.e the entries just before the next ont that uCode would fill.
1519 if (next_entry < size) {
1520 pos = iwl3945_print_event_log(priv,
1521 capacity - (size - next_entry),
1522 size - next_entry, mode,
1524 pos = iwl3945_print_event_log(priv, 0,
1528 pos = iwl3945_print_event_log(priv, next_entry - size,
1532 if (next_entry < size)
1533 pos = iwl3945_print_event_log(priv, 0,
1537 pos = iwl3945_print_event_log(priv, next_entry - size,
1544 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1546 int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1547 char **buf, bool display)
1549 u32 base; /* SRAM byte address of event log header */
1550 u32 capacity; /* event log capacity in # entries */
1551 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1552 u32 num_wraps; /* # times uCode wrapped to top of log */
1553 u32 next_entry; /* index of next entry to be written by uCode */
1554 u32 size; /* # entries that we'll print */
1558 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1559 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1560 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1564 /* event log header */
1565 capacity = iwl_read_targ_mem(priv, base);
1566 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1567 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1568 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1570 if (capacity > priv->cfg->max_event_log_size) {
1571 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1572 capacity, priv->cfg->max_event_log_size);
1573 capacity = priv->cfg->max_event_log_size;
1576 if (next_entry > priv->cfg->max_event_log_size) {
1577 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1578 next_entry, priv->cfg->max_event_log_size);
1579 next_entry = priv->cfg->max_event_log_size;
1582 size = num_wraps ? capacity : next_entry;
1584 /* bail out if nothing in log */
1586 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1590 #ifdef CONFIG_IWLWIFI_DEBUG
1591 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1592 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1593 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1595 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1596 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1599 IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1602 #ifdef CONFIG_IWLWIFI_DEBUG
1605 bufsz = capacity * 48;
1608 *buf = kmalloc(bufsz, GFP_KERNEL);
1612 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1613 /* if uCode has wrapped back to top of log,
1614 * start at the oldest entry,
1615 * i.e the next one that uCode would fill.
1618 pos = iwl3945_print_event_log(priv, next_entry,
1619 capacity - next_entry, mode,
1622 /* (then/else) start at top of log */
1623 pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
1626 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1627 next_entry, size, mode,
1630 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1631 next_entry, size, mode,
1637 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1639 u32 inta, handled = 0;
1641 unsigned long flags;
1642 #ifdef CONFIG_IWLWIFI_DEBUG
1646 spin_lock_irqsave(&priv->lock, flags);
1648 /* Ack/clear/reset pending uCode interrupts.
1649 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1650 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1651 inta = iwl_read32(priv, CSR_INT);
1652 iwl_write32(priv, CSR_INT, inta);
1654 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1655 * Any new interrupts that happen after this, either while we're
1656 * in this tasklet, or later, will show up in next ISR/tasklet. */
1657 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1658 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1660 #ifdef CONFIG_IWLWIFI_DEBUG
1661 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1662 /* just for debug */
1663 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1664 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1665 inta, inta_mask, inta_fh);
1669 spin_unlock_irqrestore(&priv->lock, flags);
1671 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1672 * atomic, make sure that inta covers all the interrupts that
1673 * we've discovered, even if FH interrupt came in just after
1674 * reading CSR_INT. */
1675 if (inta_fh & CSR39_FH_INT_RX_MASK)
1676 inta |= CSR_INT_BIT_FH_RX;
1677 if (inta_fh & CSR39_FH_INT_TX_MASK)
1678 inta |= CSR_INT_BIT_FH_TX;
1680 /* Now service all interrupt bits discovered above. */
1681 if (inta & CSR_INT_BIT_HW_ERR) {
1682 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1684 /* Tell the device to stop sending interrupts */
1685 iwl_disable_interrupts(priv);
1687 priv->isr_stats.hw++;
1688 iwl_irq_handle_error(priv);
1690 handled |= CSR_INT_BIT_HW_ERR;
1695 #ifdef CONFIG_IWLWIFI_DEBUG
1696 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1697 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1698 if (inta & CSR_INT_BIT_SCD) {
1699 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1700 "the frame/frames.\n");
1701 priv->isr_stats.sch++;
1704 /* Alive notification via Rx interrupt will do the real work */
1705 if (inta & CSR_INT_BIT_ALIVE) {
1706 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1707 priv->isr_stats.alive++;
1711 /* Safely ignore these bits for debug checks below */
1712 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1714 /* Error detected by uCode */
1715 if (inta & CSR_INT_BIT_SW_ERR) {
1716 IWL_ERR(priv, "Microcode SW error detected. "
1717 "Restarting 0x%X.\n", inta);
1718 priv->isr_stats.sw++;
1719 priv->isr_stats.sw_err = inta;
1720 iwl_irq_handle_error(priv);
1721 handled |= CSR_INT_BIT_SW_ERR;
1724 /* uCode wakes up after power-down sleep */
1725 if (inta & CSR_INT_BIT_WAKEUP) {
1726 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1727 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1728 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1729 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1730 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1731 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1732 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1733 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1735 priv->isr_stats.wakeup++;
1736 handled |= CSR_INT_BIT_WAKEUP;
1739 /* All uCode command responses, including Tx command responses,
1740 * Rx "responses" (frame-received notification), and other
1741 * notifications from uCode come through here*/
1742 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1743 iwl3945_rx_handle(priv);
1744 priv->isr_stats.rx++;
1745 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1748 if (inta & CSR_INT_BIT_FH_TX) {
1749 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1750 priv->isr_stats.tx++;
1752 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1753 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1754 (FH39_SRVC_CHNL), 0x0);
1755 handled |= CSR_INT_BIT_FH_TX;
1758 if (inta & ~handled) {
1759 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1760 priv->isr_stats.unhandled++;
1763 if (inta & ~priv->inta_mask) {
1764 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1765 inta & ~priv->inta_mask);
1766 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1769 /* Re-enable all interrupts */
1770 /* only Re-enable if disabled by irq */
1771 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1772 iwl_enable_interrupts(priv);
1774 #ifdef CONFIG_IWLWIFI_DEBUG
1775 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1776 inta = iwl_read32(priv, CSR_INT);
1777 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1778 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1779 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1780 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1785 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1786 enum ieee80211_band band,
1787 u8 is_active, u8 n_probes,
1788 struct iwl3945_scan_channel *scan_ch,
1789 struct ieee80211_vif *vif)
1791 struct ieee80211_channel *chan;
1792 const struct ieee80211_supported_band *sband;
1793 const struct iwl_channel_info *ch_info;
1794 u16 passive_dwell = 0;
1795 u16 active_dwell = 0;
1798 sband = iwl_get_hw_mode(priv, band);
1802 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1803 passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
1805 if (passive_dwell <= active_dwell)
1806 passive_dwell = active_dwell + 1;
1808 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1809 chan = priv->scan_request->channels[i];
1811 if (chan->band != band)
1814 scan_ch->channel = chan->hw_value;
1816 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1817 if (!is_channel_valid(ch_info)) {
1818 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1823 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1824 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1825 /* If passive , set up for auto-switch
1826 * and use long active_dwell time.
1828 if (!is_active || is_channel_passive(ch_info) ||
1829 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1830 scan_ch->type = 0; /* passive */
1831 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1832 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1834 scan_ch->type = 1; /* active */
1837 /* Set direct probe bits. These may be used both for active
1838 * scan channels (probes gets sent right away),
1839 * or for passive channels (probes get se sent only after
1840 * hearing clear Rx packet).*/
1841 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1843 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1845 /* uCode v1 does not allow setting direct probe bits on
1846 * passive channel. */
1847 if ((scan_ch->type & 1) && n_probes)
1848 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1851 /* Set txpower levels to defaults */
1852 scan_ch->tpc.dsp_atten = 110;
1853 /* scan_pwr_info->tpc.dsp_atten; */
1855 /*scan_pwr_info->tpc.tx_gain; */
1856 if (band == IEEE80211_BAND_5GHZ)
1857 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1859 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1860 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1862 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1866 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1868 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1869 (scan_ch->type & 1) ?
1870 active_dwell : passive_dwell);
1876 IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added);
1880 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1881 struct ieee80211_rate *rates)
1885 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1886 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1887 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1888 rates[i].hw_value_short = i;
1890 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1892 * If CCK != 1M then set short preamble rate flag.
1894 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1895 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1900 /******************************************************************************
1902 * uCode download functions
1904 ******************************************************************************/
1906 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1908 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1909 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1910 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1911 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1912 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1913 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1917 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1918 * looking at all data.
1920 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1927 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1929 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1930 IWL39_RTC_INST_LOWER_BOUND);
1933 for (; len > 0; len -= sizeof(u32), image++) {
1934 /* read data comes through single port, auto-incr addr */
1935 /* NOTE: Use the debugless read so we don't flood kernel log
1936 * if IWL_DL_IO is set */
1937 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1938 if (val != le32_to_cpu(*image)) {
1939 IWL_ERR(priv, "uCode INST section is invalid at "
1940 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1941 save_len - len, val, le32_to_cpu(*image));
1951 IWL_DEBUG_INFO(priv,
1952 "ucode image in INSTRUCTION memory is good\n");
1959 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1960 * using sample data 100 bytes apart. If these sample points are good,
1961 * it's a pretty good bet that everything between them is good, too.
1963 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1970 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1972 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1973 /* read data comes through single port, auto-incr addr */
1974 /* NOTE: Use the debugless read so we don't flood kernel log
1975 * if IWL_DL_IO is set */
1976 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1977 i + IWL39_RTC_INST_LOWER_BOUND);
1978 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1979 if (val != le32_to_cpu(*image)) {
1980 #if 0 /* Enable this if you want to see details */
1981 IWL_ERR(priv, "uCode INST section is invalid at "
1982 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1997 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
1998 * and verify its contents
2000 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2007 image = (__le32 *)priv->ucode_boot.v_addr;
2008 len = priv->ucode_boot.len;
2009 rc = iwl3945_verify_inst_sparse(priv, image, len);
2011 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2015 /* Try initialize */
2016 image = (__le32 *)priv->ucode_init.v_addr;
2017 len = priv->ucode_init.len;
2018 rc = iwl3945_verify_inst_sparse(priv, image, len);
2020 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2024 /* Try runtime/protocol */
2025 image = (__le32 *)priv->ucode_code.v_addr;
2026 len = priv->ucode_code.len;
2027 rc = iwl3945_verify_inst_sparse(priv, image, len);
2029 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2033 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2035 /* Since nothing seems to match, show first several data entries in
2036 * instruction SRAM, so maybe visual inspection will give a clue.
2037 * Selection of bootstrap image (vs. other images) is arbitrary. */
2038 image = (__le32 *)priv->ucode_boot.v_addr;
2039 len = priv->ucode_boot.len;
2040 rc = iwl3945_verify_inst_full(priv, image, len);
2045 static void iwl3945_nic_start(struct iwl_priv *priv)
2047 /* Remove all resets to allow NIC to operate */
2048 iwl_write32(priv, CSR_RESET, 0);
2051 #define IWL3945_UCODE_GET(item) \
2052 static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode)\
2054 return le32_to_cpu(ucode->u.v1.item); \
2057 static u32 iwl3945_ucode_get_header_size(u32 api_ver)
2062 static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode)
2064 return (u8 *) ucode->u.v1.data;
2067 IWL3945_UCODE_GET(inst_size);
2068 IWL3945_UCODE_GET(data_size);
2069 IWL3945_UCODE_GET(init_size);
2070 IWL3945_UCODE_GET(init_data_size);
2071 IWL3945_UCODE_GET(boot_size);
2074 * iwl3945_read_ucode - Read uCode images from disk file.
2076 * Copy into buffers for card to fetch via bus-mastering
2078 static int iwl3945_read_ucode(struct iwl_priv *priv)
2080 const struct iwl_ucode_header *ucode;
2081 int ret = -EINVAL, index;
2082 const struct firmware *ucode_raw;
2083 /* firmware file name contains uCode/driver compatibility version */
2084 const char *name_pre = priv->cfg->fw_name_pre;
2085 const unsigned int api_max = priv->cfg->ucode_api_max;
2086 const unsigned int api_min = priv->cfg->ucode_api_min;
2090 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2092 /* Ask kernel firmware_class module to get the boot firmware off disk.
2093 * request_firmware() is synchronous, file is in memory on return. */
2094 for (index = api_max; index >= api_min; index--) {
2095 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2096 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2098 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2105 if (index < api_max)
2106 IWL_ERR(priv, "Loaded firmware %s, "
2107 "which is deprecated. "
2108 " Please use API v%u instead.\n",
2110 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2111 "(%zd bytes) from disk\n",
2112 buf, ucode_raw->size);
2120 /* Make sure that we got at least our header! */
2121 if (ucode_raw->size < iwl3945_ucode_get_header_size(1)) {
2122 IWL_ERR(priv, "File size way too small!\n");
2127 /* Data from ucode file: header followed by uCode images */
2128 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2130 priv->ucode_ver = le32_to_cpu(ucode->ver);
2131 api_ver = IWL_UCODE_API(priv->ucode_ver);
2132 inst_size = iwl3945_ucode_get_inst_size(ucode);
2133 data_size = iwl3945_ucode_get_data_size(ucode);
2134 init_size = iwl3945_ucode_get_init_size(ucode);
2135 init_data_size = iwl3945_ucode_get_init_data_size(ucode);
2136 boot_size = iwl3945_ucode_get_boot_size(ucode);
2137 src = iwl3945_ucode_get_data(ucode);
2139 /* api_ver should match the api version forming part of the
2140 * firmware filename ... but we don't check for that and only rely
2141 * on the API version read from firmware header from here on forward */
2143 if (api_ver < api_min || api_ver > api_max) {
2144 IWL_ERR(priv, "Driver unable to support your firmware API. "
2145 "Driver supports v%u, firmware is v%u.\n",
2147 priv->ucode_ver = 0;
2151 if (api_ver != api_max)
2152 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2153 "got %u. New firmware can be obtained "
2154 "from http://www.intellinuxwireless.org.\n",
2157 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2158 IWL_UCODE_MAJOR(priv->ucode_ver),
2159 IWL_UCODE_MINOR(priv->ucode_ver),
2160 IWL_UCODE_API(priv->ucode_ver),
2161 IWL_UCODE_SERIAL(priv->ucode_ver));
2163 snprintf(priv->hw->wiphy->fw_version,
2164 sizeof(priv->hw->wiphy->fw_version),
2166 IWL_UCODE_MAJOR(priv->ucode_ver),
2167 IWL_UCODE_MINOR(priv->ucode_ver),
2168 IWL_UCODE_API(priv->ucode_ver),
2169 IWL_UCODE_SERIAL(priv->ucode_ver));
2171 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2173 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2175 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2177 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2179 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2181 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2185 /* Verify size of file vs. image size info in file's header */
2186 if (ucode_raw->size != iwl3945_ucode_get_header_size(api_ver) +
2187 inst_size + data_size + init_size +
2188 init_data_size + boot_size) {
2190 IWL_DEBUG_INFO(priv,
2191 "uCode file size %zd does not match expected size\n",
2197 /* Verify that uCode images will fit in card's SRAM */
2198 if (inst_size > IWL39_MAX_INST_SIZE) {
2199 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2205 if (data_size > IWL39_MAX_DATA_SIZE) {
2206 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2211 if (init_size > IWL39_MAX_INST_SIZE) {
2212 IWL_DEBUG_INFO(priv,
2213 "uCode init instr len %d too large to fit in\n",
2218 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2219 IWL_DEBUG_INFO(priv,
2220 "uCode init data len %d too large to fit in\n",
2225 if (boot_size > IWL39_MAX_BSM_SIZE) {
2226 IWL_DEBUG_INFO(priv,
2227 "uCode boot instr len %d too large to fit in\n",
2233 /* Allocate ucode buffers for card's bus-master loading ... */
2235 /* Runtime instructions and 2 copies of data:
2236 * 1) unmodified from disk
2237 * 2) backup cache for save/restore during power-downs */
2238 priv->ucode_code.len = inst_size;
2239 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2241 priv->ucode_data.len = data_size;
2242 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2244 priv->ucode_data_backup.len = data_size;
2245 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2247 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2248 !priv->ucode_data_backup.v_addr)
2251 /* Initialization instructions and data */
2252 if (init_size && init_data_size) {
2253 priv->ucode_init.len = init_size;
2254 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2256 priv->ucode_init_data.len = init_data_size;
2257 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2259 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2263 /* Bootstrap (instructions only, no data) */
2265 priv->ucode_boot.len = boot_size;
2266 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2268 if (!priv->ucode_boot.v_addr)
2272 /* Copy images into buffers for card's bus-master reads ... */
2274 /* Runtime instructions (first block of data in file) */
2276 IWL_DEBUG_INFO(priv,
2277 "Copying (but not loading) uCode instr len %zd\n", len);
2278 memcpy(priv->ucode_code.v_addr, src, len);
2281 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2282 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2284 /* Runtime data (2nd block)
2285 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2287 IWL_DEBUG_INFO(priv,
2288 "Copying (but not loading) uCode data len %zd\n", len);
2289 memcpy(priv->ucode_data.v_addr, src, len);
2290 memcpy(priv->ucode_data_backup.v_addr, src, len);
2293 /* Initialization instructions (3rd block) */
2296 IWL_DEBUG_INFO(priv,
2297 "Copying (but not loading) init instr len %zd\n", len);
2298 memcpy(priv->ucode_init.v_addr, src, len);
2302 /* Initialization data (4th block) */
2303 if (init_data_size) {
2304 len = init_data_size;
2305 IWL_DEBUG_INFO(priv,
2306 "Copying (but not loading) init data len %zd\n", len);
2307 memcpy(priv->ucode_init_data.v_addr, src, len);
2311 /* Bootstrap instructions (5th block) */
2313 IWL_DEBUG_INFO(priv,
2314 "Copying (but not loading) boot instr len %zd\n", len);
2315 memcpy(priv->ucode_boot.v_addr, src, len);
2317 /* We have our copies now, allow OS release its copies */
2318 release_firmware(ucode_raw);
2322 IWL_ERR(priv, "failed to allocate pci memory\n");
2324 iwl3945_dealloc_ucode_pci(priv);
2327 release_firmware(ucode_raw);
2335 * iwl3945_set_ucode_ptrs - Set uCode address location
2337 * Tell initialization uCode where to find runtime uCode.
2339 * BSM registers initially contain pointers to initialization uCode.
2340 * We need to replace them to load runtime uCode inst and data,
2341 * and to save runtime data when powering down.
2343 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2348 /* bits 31:0 for 3945 */
2349 pinst = priv->ucode_code.p_addr;
2350 pdata = priv->ucode_data_backup.p_addr;
2352 /* Tell bootstrap uCode where to find image to load */
2353 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2354 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2355 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2356 priv->ucode_data.len);
2358 /* Inst byte count must be last to set up, bit 31 signals uCode
2359 * that all new ptr/size info is in place */
2360 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2361 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2363 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2369 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2371 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2373 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2375 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2377 /* Check alive response for "valid" sign from uCode */
2378 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2379 /* We had an error bringing up the hardware, so take it
2380 * all the way back down so we can try again */
2381 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2385 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2386 * This is a paranoid check, because we would not have gotten the
2387 * "initialize" alive if code weren't properly loaded. */
2388 if (iwl3945_verify_ucode(priv)) {
2389 /* Runtime instruction load was bad;
2390 * take it all the way back down so we can try again */
2391 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2395 /* Send pointers to protocol/runtime uCode image ... init code will
2396 * load and launch runtime uCode, which will send us another "Alive"
2398 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2399 if (iwl3945_set_ucode_ptrs(priv)) {
2400 /* Runtime instruction load won't happen;
2401 * take it all the way back down so we can try again */
2402 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2408 queue_work(priv->workqueue, &priv->restart);
2412 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2413 * from protocol/runtime uCode (initialization uCode's
2414 * Alive gets handled by iwl3945_init_alive_start()).
2416 static void iwl3945_alive_start(struct iwl_priv *priv)
2418 int thermal_spin = 0;
2421 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2423 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2424 /* We had an error bringing up the hardware, so take it
2425 * all the way back down so we can try again */
2426 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2430 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2431 * This is a paranoid check, because we would not have gotten the
2432 * "runtime" alive if code weren't properly loaded. */
2433 if (iwl3945_verify_ucode(priv)) {
2434 /* Runtime instruction load was bad;
2435 * take it all the way back down so we can try again */
2436 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2440 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2441 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2444 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2445 /* if RFKILL is not on, then wait for thermal
2446 * sensor in adapter to kick in */
2447 while (iwl3945_hw_get_temperature(priv) == 0) {
2453 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2456 set_bit(STATUS_RF_KILL_HW, &priv->status);
2458 /* After the ALIVE response, we can send commands to 3945 uCode */
2459 set_bit(STATUS_ALIVE, &priv->status);
2461 if (priv->cfg->ops->lib->recover_from_tx_stall) {
2462 /* Enable timer to monitor the driver queues */
2463 mod_timer(&priv->monitor_recover,
2465 msecs_to_jiffies(priv->cfg->monitor_recover_period));
2468 if (iwl_is_rfkill(priv))
2471 ieee80211_wake_queues(priv->hw);
2473 priv->active_rate = IWL_RATES_MASK;
2475 iwl_power_update_mode(priv, true);
2477 if (iwl_is_associated(priv)) {
2478 struct iwl3945_rxon_cmd *active_rxon =
2479 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2481 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2482 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2484 /* Initialize our rx_config data */
2485 iwl_connection_init_rx_config(priv, NULL);
2488 /* Configure Bluetooth device coexistence support */
2489 priv->cfg->ops->hcmd->send_bt_config(priv);
2491 /* Configure the adapter for unassociated operation */
2492 iwlcore_commit_rxon(priv);
2494 iwl3945_reg_txpower_periodic(priv);
2496 iwl_leds_init(priv);
2498 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2499 set_bit(STATUS_READY, &priv->status);
2500 wake_up_interruptible(&priv->wait_command_queue);
2505 queue_work(priv->workqueue, &priv->restart);
2508 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2510 static void __iwl3945_down(struct iwl_priv *priv)
2512 unsigned long flags;
2513 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2514 struct ieee80211_conf *conf = NULL;
2516 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2518 conf = ieee80211_get_hw_conf(priv->hw);
2521 set_bit(STATUS_EXIT_PENDING, &priv->status);
2523 /* Station information will now be cleared in device */
2524 iwl_clear_ucode_stations(priv);
2525 iwl_dealloc_bcast_station(priv);
2526 iwl_clear_driver_stations(priv);
2528 /* Unblock any waiting calls */
2529 wake_up_interruptible_all(&priv->wait_command_queue);
2531 /* Wipe out the EXIT_PENDING status bit if we are not actually
2532 * exiting the module */
2534 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2536 /* stop and reset the on-board processor */
2537 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2539 /* tell the device to stop sending interrupts */
2540 spin_lock_irqsave(&priv->lock, flags);
2541 iwl_disable_interrupts(priv);
2542 spin_unlock_irqrestore(&priv->lock, flags);
2543 iwl_synchronize_irq(priv);
2545 if (priv->mac80211_registered)
2546 ieee80211_stop_queues(priv->hw);
2548 /* If we have not previously called iwl3945_init() then
2549 * clear all bits but the RF Kill bits and return */
2550 if (!iwl_is_init(priv)) {
2551 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2553 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2554 STATUS_GEO_CONFIGURED |
2555 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2556 STATUS_EXIT_PENDING;
2560 /* ...otherwise clear out all the status bits but the RF Kill
2561 * bit and continue taking the NIC down. */
2562 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2564 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2565 STATUS_GEO_CONFIGURED |
2566 test_bit(STATUS_FW_ERROR, &priv->status) <<
2568 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2569 STATUS_EXIT_PENDING;
2571 iwl3945_hw_txq_ctx_stop(priv);
2572 iwl3945_hw_rxq_stop(priv);
2574 /* Power-down device's busmaster DMA clocks */
2575 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2578 /* Stop the device, and put it in low power state */
2579 priv->cfg->ops->lib->apm_ops.stop(priv);
2582 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2584 if (priv->ibss_beacon)
2585 dev_kfree_skb(priv->ibss_beacon);
2586 priv->ibss_beacon = NULL;
2588 /* clear out any free frames */
2589 iwl3945_clear_free_frames(priv);
2592 static void iwl3945_down(struct iwl_priv *priv)
2594 mutex_lock(&priv->mutex);
2595 __iwl3945_down(priv);
2596 mutex_unlock(&priv->mutex);
2598 iwl3945_cancel_deferred_work(priv);
2601 #define MAX_HW_RESTARTS 5
2603 static int __iwl3945_up(struct iwl_priv *priv)
2607 rc = iwl_alloc_bcast_station(priv, false);
2611 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2612 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2616 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2617 IWL_ERR(priv, "ucode not available for device bring up\n");
2621 /* If platform's RF_KILL switch is NOT set to KILL */
2622 if (iwl_read32(priv, CSR_GP_CNTRL) &
2623 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2624 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2626 set_bit(STATUS_RF_KILL_HW, &priv->status);
2627 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2631 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2633 rc = iwl3945_hw_nic_init(priv);
2635 IWL_ERR(priv, "Unable to int nic\n");
2639 /* make sure rfkill handshake bits are cleared */
2640 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2641 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2642 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2644 /* clear (again), then enable host interrupts */
2645 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2646 iwl_enable_interrupts(priv);
2648 /* really make sure rfkill handshake bits are cleared */
2649 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2650 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2652 /* Copy original ucode data image from disk into backup cache.
2653 * This will be used to initialize the on-board processor's
2654 * data SRAM for a clean start when the runtime program first loads. */
2655 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2656 priv->ucode_data.len);
2658 /* We return success when we resume from suspend and rf_kill is on. */
2659 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2662 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2664 /* load bootstrap state machine,
2665 * load bootstrap program into processor's memory,
2666 * prepare to load the "initialize" uCode */
2667 rc = priv->cfg->ops->lib->load_ucode(priv);
2671 "Unable to set up bootstrap uCode: %d\n", rc);
2675 /* start card; "initialize" will load runtime ucode */
2676 iwl3945_nic_start(priv);
2678 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2683 set_bit(STATUS_EXIT_PENDING, &priv->status);
2684 __iwl3945_down(priv);
2685 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2687 /* tried to restart and config the device for as long as our
2688 * patience could withstand */
2689 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2694 /*****************************************************************************
2696 * Workqueue callbacks
2698 *****************************************************************************/
2700 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2702 struct iwl_priv *priv =
2703 container_of(data, struct iwl_priv, init_alive_start.work);
2705 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2708 mutex_lock(&priv->mutex);
2709 iwl3945_init_alive_start(priv);
2710 mutex_unlock(&priv->mutex);
2713 static void iwl3945_bg_alive_start(struct work_struct *data)
2715 struct iwl_priv *priv =
2716 container_of(data, struct iwl_priv, alive_start.work);
2718 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2721 mutex_lock(&priv->mutex);
2722 iwl3945_alive_start(priv);
2723 mutex_unlock(&priv->mutex);
2727 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2728 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2729 * *is* readable even when device has been SW_RESET into low power mode
2730 * (e.g. during RF KILL).
2732 static void iwl3945_rfkill_poll(struct work_struct *data)
2734 struct iwl_priv *priv =
2735 container_of(data, struct iwl_priv, _3945.rfkill_poll.work);
2736 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2737 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2738 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2740 if (new_rfkill != old_rfkill) {
2742 set_bit(STATUS_RF_KILL_HW, &priv->status);
2744 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2746 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2748 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2749 new_rfkill ? "disable radio" : "enable radio");
2752 /* Keep this running, even if radio now enabled. This will be
2753 * cancelled in mac_start() if system decides to start again */
2754 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
2755 round_jiffies_relative(2 * HZ));
2759 void iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
2761 struct iwl_host_cmd cmd = {
2762 .id = REPLY_SCAN_CMD,
2763 .len = sizeof(struct iwl3945_scan_cmd),
2764 .flags = CMD_SIZE_HUGE,
2766 struct iwl3945_scan_cmd *scan;
2767 struct ieee80211_conf *conf = NULL;
2769 enum ieee80211_band band;
2770 bool is_active = false;
2772 conf = ieee80211_get_hw_conf(priv->hw);
2774 cancel_delayed_work(&priv->scan_check);
2776 if (!iwl_is_ready(priv)) {
2777 IWL_WARN(priv, "request scan called when driver not ready.\n");
2781 /* Make sure the scan wasn't canceled before this queued work
2782 * was given the chance to run... */
2783 if (!test_bit(STATUS_SCANNING, &priv->status))
2786 /* This should never be called or scheduled if there is currently
2787 * a scan active in the hardware. */
2788 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2789 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2790 "Ignoring second request.\n");
2794 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2795 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2799 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2801 "Scan request while abort pending. Queuing.\n");
2805 if (iwl_is_rfkill(priv)) {
2806 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2810 if (!test_bit(STATUS_READY, &priv->status)) {
2812 "Scan request while uninitialized. Queuing.\n");
2816 if (!priv->scan_cmd) {
2817 priv->scan_cmd = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2818 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2819 if (!priv->scan_cmd) {
2820 IWL_DEBUG_SCAN(priv, "Fail to allocate scan memory\n");
2824 scan = priv->scan_cmd;
2825 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2827 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2828 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2830 if (iwl_is_associated(priv)) {
2833 u32 suspend_time = 100;
2834 u32 scan_suspend_time = 100;
2835 unsigned long flags;
2837 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2839 spin_lock_irqsave(&priv->lock, flags);
2840 interval = vif ? vif->bss_conf.beacon_int : 0;
2841 spin_unlock_irqrestore(&priv->lock, flags);
2843 scan->suspend_time = 0;
2844 scan->max_out_time = cpu_to_le32(200 * 1024);
2846 interval = suspend_time;
2848 * suspend time format:
2849 * 0-19: beacon interval in usec (time before exec.)
2851 * 24-31: number of beacons (suspend between channels)
2854 extra = (suspend_time / interval) << 24;
2855 scan_suspend_time = 0xFF0FFFFF &
2856 (extra | ((suspend_time % interval) * 1024));
2858 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2859 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2860 scan_suspend_time, interval);
2863 if (priv->is_internal_short_scan) {
2864 IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
2865 } else if (priv->scan_request->n_ssids) {
2867 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2868 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2869 /* always does wildcard anyway */
2870 if (!priv->scan_request->ssids[i].ssid_len)
2872 scan->direct_scan[p].id = WLAN_EID_SSID;
2873 scan->direct_scan[p].len =
2874 priv->scan_request->ssids[i].ssid_len;
2875 memcpy(scan->direct_scan[p].ssid,
2876 priv->scan_request->ssids[i].ssid,
2877 priv->scan_request->ssids[i].ssid_len);
2883 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2885 /* We don't build a direct scan probe request; the uCode will do
2886 * that based on the direct_mask added to each channel entry */
2887 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2888 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2889 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2891 /* flags + rate selection */
2893 switch (priv->scan_band) {
2894 case IEEE80211_BAND_2GHZ:
2895 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2896 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2897 scan->good_CRC_th = 0;
2898 band = IEEE80211_BAND_2GHZ;
2900 case IEEE80211_BAND_5GHZ:
2901 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2903 * If active scaning is requested but a certain channel
2904 * is marked passive, we can do active scanning if we
2905 * detect transmissions.
2907 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
2908 IWL_GOOD_CRC_TH_DISABLED;
2909 band = IEEE80211_BAND_5GHZ;
2912 IWL_WARN(priv, "Invalid scan band\n");
2916 if (!priv->is_internal_short_scan) {
2917 scan->tx_cmd.len = cpu_to_le16(
2918 iwl_fill_probe_req(priv,
2919 (struct ieee80211_mgmt *)scan->data,
2921 priv->scan_request->ie,
2922 priv->scan_request->ie_len,
2923 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2925 /* use bcast addr, will not be transmitted but must be valid */
2926 scan->tx_cmd.len = cpu_to_le16(
2927 iwl_fill_probe_req(priv,
2928 (struct ieee80211_mgmt *)scan->data,
2929 iwl_bcast_addr, NULL, 0,
2930 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2932 /* select Rx antennas */
2933 scan->flags |= iwl3945_get_antenna_flags(priv);
2935 scan->channel_count =
2936 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2937 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)], vif);
2939 if (scan->channel_count == 0) {
2940 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2944 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2945 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2947 scan->len = cpu_to_le16(cmd.len);
2949 set_bit(STATUS_SCAN_HW, &priv->status);
2950 if (iwl_send_cmd_sync(priv, &cmd))
2953 queue_delayed_work(priv->workqueue, &priv->scan_check,
2954 IWL_SCAN_CHECK_WATCHDOG);
2959 /* can not perform scan make sure we clear scanning
2960 * bits from status so next scan request can be performed.
2961 * if we dont clear scanning status bit here all next scan
2964 clear_bit(STATUS_SCAN_HW, &priv->status);
2965 clear_bit(STATUS_SCANNING, &priv->status);
2967 /* inform mac80211 scan aborted */
2968 queue_work(priv->workqueue, &priv->scan_completed);
2971 static void iwl3945_bg_restart(struct work_struct *data)
2973 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2975 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2978 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2979 mutex_lock(&priv->mutex);
2982 mutex_unlock(&priv->mutex);
2984 ieee80211_restart_hw(priv->hw);
2988 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2991 mutex_lock(&priv->mutex);
2993 mutex_unlock(&priv->mutex);
2997 static void iwl3945_bg_rx_replenish(struct work_struct *data)
2999 struct iwl_priv *priv =
3000 container_of(data, struct iwl_priv, rx_replenish);
3002 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3005 mutex_lock(&priv->mutex);
3006 iwl3945_rx_replenish(priv);
3007 mutex_unlock(&priv->mutex);
3010 void iwl3945_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
3013 struct ieee80211_conf *conf = NULL;
3015 if (!vif || !priv->is_open)
3018 if (vif->type == NL80211_IFTYPE_AP) {
3019 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3023 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3024 vif->bss_conf.aid, priv->active_rxon.bssid_addr);
3026 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3029 iwl_scan_cancel_timeout(priv, 200);
3031 conf = ieee80211_get_hw_conf(priv->hw);
3033 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3034 iwlcore_commit_rxon(priv);
3036 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3037 iwl_setup_rxon_timing(priv, vif);
3038 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3039 sizeof(priv->rxon_timing), &priv->rxon_timing);
3041 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3042 "Attempting to continue.\n");
3044 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3046 priv->staging_rxon.assoc_id = cpu_to_le16(vif->bss_conf.aid);
3048 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3049 vif->bss_conf.aid, vif->bss_conf.beacon_int);
3051 if (vif->bss_conf.use_short_preamble)
3052 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3054 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3056 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3057 if (vif->bss_conf.use_short_slot)
3058 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3060 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3063 iwlcore_commit_rxon(priv);
3065 switch (vif->type) {
3066 case NL80211_IFTYPE_STATION:
3067 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3069 case NL80211_IFTYPE_ADHOC:
3070 iwl3945_send_beacon_cmd(priv);
3073 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3074 __func__, vif->type);
3079 /*****************************************************************************
3081 * mac80211 entry point functions
3083 *****************************************************************************/
3085 #define UCODE_READY_TIMEOUT (2 * HZ)
3087 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3089 struct iwl_priv *priv = hw->priv;
3092 IWL_DEBUG_MAC80211(priv, "enter\n");
3094 /* we should be verifying the device is ready to be opened */
3095 mutex_lock(&priv->mutex);
3097 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3098 * ucode filename and max sizes are card-specific. */
3100 if (!priv->ucode_code.len) {
3101 ret = iwl3945_read_ucode(priv);
3103 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3104 mutex_unlock(&priv->mutex);
3105 goto out_release_irq;
3109 ret = __iwl3945_up(priv);
3111 mutex_unlock(&priv->mutex);
3114 goto out_release_irq;
3116 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3118 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3119 * mac80211 will not be run successfully. */
3120 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3121 test_bit(STATUS_READY, &priv->status),
3122 UCODE_READY_TIMEOUT);
3124 if (!test_bit(STATUS_READY, &priv->status)) {
3126 "Wait for START_ALIVE timeout after %dms.\n",
3127 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3129 goto out_release_irq;
3133 /* ucode is running and will send rfkill notifications,
3134 * no need to poll the killswitch state anymore */
3135 cancel_delayed_work(&priv->_3945.rfkill_poll);
3137 iwl_led_start(priv);
3140 IWL_DEBUG_MAC80211(priv, "leave\n");
3145 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3149 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3151 struct iwl_priv *priv = hw->priv;
3153 IWL_DEBUG_MAC80211(priv, "enter\n");
3155 if (!priv->is_open) {
3156 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3162 if (iwl_is_ready_rf(priv)) {
3163 /* stop mac, cancel any scan request and clear
3164 * RXON_FILTER_ASSOC_MSK BIT
3166 mutex_lock(&priv->mutex);
3167 iwl_scan_cancel_timeout(priv, 100);
3168 mutex_unlock(&priv->mutex);
3173 flush_workqueue(priv->workqueue);
3175 /* start polling the killswitch state again */
3176 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
3177 round_jiffies_relative(2 * HZ));
3179 IWL_DEBUG_MAC80211(priv, "leave\n");
3182 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3184 struct iwl_priv *priv = hw->priv;
3186 IWL_DEBUG_MAC80211(priv, "enter\n");
3188 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3189 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3191 if (iwl3945_tx_skb(priv, skb))
3192 dev_kfree_skb_any(skb);
3194 IWL_DEBUG_MAC80211(priv, "leave\n");
3195 return NETDEV_TX_OK;
3198 void iwl3945_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
3202 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3205 /* The following should be done only at AP bring up */
3206 if (!(iwl_is_associated(priv))) {
3208 /* RXON - unassoc (to set timing command) */
3209 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3210 iwlcore_commit_rxon(priv);
3213 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3214 iwl_setup_rxon_timing(priv, vif);
3215 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3216 sizeof(priv->rxon_timing),
3217 &priv->rxon_timing);
3219 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3220 "Attempting to continue.\n");
3222 priv->staging_rxon.assoc_id = 0;
3224 if (vif->bss_conf.use_short_preamble)
3225 priv->staging_rxon.flags |=
3226 RXON_FLG_SHORT_PREAMBLE_MSK;
3228 priv->staging_rxon.flags &=
3229 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3231 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3232 if (vif->bss_conf.use_short_slot)
3233 priv->staging_rxon.flags |=
3234 RXON_FLG_SHORT_SLOT_MSK;
3236 priv->staging_rxon.flags &=
3237 ~RXON_FLG_SHORT_SLOT_MSK;
3239 /* restore RXON assoc */
3240 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3241 iwlcore_commit_rxon(priv);
3243 iwl3945_send_beacon_cmd(priv);
3245 /* FIXME - we need to add code here to detect a totally new
3246 * configuration, reset the AP, unassoc, rxon timing, assoc,
3247 * clear sta table, add BCAST sta... */
3250 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3251 struct ieee80211_vif *vif,
3252 struct ieee80211_sta *sta,
3253 struct ieee80211_key_conf *key)
3255 struct iwl_priv *priv = hw->priv;
3257 u8 sta_id = IWL_INVALID_STATION;
3260 IWL_DEBUG_MAC80211(priv, "enter\n");
3262 if (iwl3945_mod_params.sw_crypto) {
3263 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3267 static_key = !iwl_is_associated(priv);
3270 sta_id = iwl_sta_id_or_broadcast(priv, sta);
3271 if (sta_id == IWL_INVALID_STATION)
3275 mutex_lock(&priv->mutex);
3276 iwl_scan_cancel_timeout(priv, 100);
3281 ret = iwl3945_set_static_key(priv, key);
3283 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3284 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3288 ret = iwl3945_remove_static_key(priv);
3290 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3291 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3297 mutex_unlock(&priv->mutex);
3298 IWL_DEBUG_MAC80211(priv, "leave\n");
3303 static int iwl3945_mac_sta_add(struct ieee80211_hw *hw,
3304 struct ieee80211_vif *vif,
3305 struct ieee80211_sta *sta)
3307 struct iwl_priv *priv = hw->priv;
3308 struct iwl3945_sta_priv *sta_priv = (void *)sta->drv_priv;
3310 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3313 sta_priv->common.sta_id = IWL_INVALID_STATION;
3315 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3318 ret = iwl_add_station_common(priv, sta->addr, is_ap, &sta->ht_cap,
3321 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3323 /* Should we return success if return code is EEXIST ? */
3327 sta_priv->common.sta_id = sta_id;
3329 /* Initialize rate scaling */
3330 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3332 iwl3945_rs_rate_init(priv, sta, sta_id);
3336 /*****************************************************************************
3340 *****************************************************************************/
3342 #ifdef CONFIG_IWLWIFI_DEBUG
3345 * The following adds a new attribute to the sysfs representation
3346 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3347 * used for controlling the debug level.
3349 * See the level definitions in iwl for details.
3351 * The debug_level being managed using sysfs below is a per device debug
3352 * level that is used instead of the global debug level if it (the per
3353 * device debug level) is set.
3355 static ssize_t show_debug_level(struct device *d,
3356 struct device_attribute *attr, char *buf)
3358 struct iwl_priv *priv = dev_get_drvdata(d);
3359 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3361 static ssize_t store_debug_level(struct device *d,
3362 struct device_attribute *attr,
3363 const char *buf, size_t count)
3365 struct iwl_priv *priv = dev_get_drvdata(d);
3369 ret = strict_strtoul(buf, 0, &val);
3371 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3373 priv->debug_level = val;
3374 if (iwl_alloc_traffic_mem(priv))
3376 "Not enough memory to generate traffic log\n");
3378 return strnlen(buf, count);
3381 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3382 show_debug_level, store_debug_level);
3384 #endif /* CONFIG_IWLWIFI_DEBUG */
3386 static ssize_t show_temperature(struct device *d,
3387 struct device_attribute *attr, char *buf)
3389 struct iwl_priv *priv = dev_get_drvdata(d);
3391 if (!iwl_is_alive(priv))
3394 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3397 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3399 static ssize_t show_tx_power(struct device *d,
3400 struct device_attribute *attr, char *buf)
3402 struct iwl_priv *priv = dev_get_drvdata(d);
3403 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3406 static ssize_t store_tx_power(struct device *d,
3407 struct device_attribute *attr,
3408 const char *buf, size_t count)
3410 struct iwl_priv *priv = dev_get_drvdata(d);
3411 char *p = (char *)buf;
3414 val = simple_strtoul(p, &p, 10);
3416 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3418 iwl3945_hw_reg_set_txpower(priv, val);
3423 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3425 static ssize_t show_flags(struct device *d,
3426 struct device_attribute *attr, char *buf)
3428 struct iwl_priv *priv = dev_get_drvdata(d);
3430 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3433 static ssize_t store_flags(struct device *d,
3434 struct device_attribute *attr,
3435 const char *buf, size_t count)
3437 struct iwl_priv *priv = dev_get_drvdata(d);
3438 u32 flags = simple_strtoul(buf, NULL, 0);
3440 mutex_lock(&priv->mutex);
3441 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3442 /* Cancel any currently running scans... */
3443 if (iwl_scan_cancel_timeout(priv, 100))
3444 IWL_WARN(priv, "Could not cancel scan.\n");
3446 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3448 priv->staging_rxon.flags = cpu_to_le32(flags);
3449 iwlcore_commit_rxon(priv);
3452 mutex_unlock(&priv->mutex);
3457 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3459 static ssize_t show_filter_flags(struct device *d,
3460 struct device_attribute *attr, char *buf)
3462 struct iwl_priv *priv = dev_get_drvdata(d);
3464 return sprintf(buf, "0x%04X\n",
3465 le32_to_cpu(priv->active_rxon.filter_flags));
3468 static ssize_t store_filter_flags(struct device *d,
3469 struct device_attribute *attr,
3470 const char *buf, size_t count)
3472 struct iwl_priv *priv = dev_get_drvdata(d);
3473 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3475 mutex_lock(&priv->mutex);
3476 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3477 /* Cancel any currently running scans... */
3478 if (iwl_scan_cancel_timeout(priv, 100))
3479 IWL_WARN(priv, "Could not cancel scan.\n");
3481 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3482 "0x%04X\n", filter_flags);
3483 priv->staging_rxon.filter_flags =
3484 cpu_to_le32(filter_flags);
3485 iwlcore_commit_rxon(priv);
3488 mutex_unlock(&priv->mutex);
3493 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3494 store_filter_flags);
3496 static ssize_t show_measurement(struct device *d,
3497 struct device_attribute *attr, char *buf)
3499 struct iwl_priv *priv = dev_get_drvdata(d);
3500 struct iwl_spectrum_notification measure_report;
3501 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3502 u8 *data = (u8 *)&measure_report;
3503 unsigned long flags;
3505 spin_lock_irqsave(&priv->lock, flags);
3506 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3507 spin_unlock_irqrestore(&priv->lock, flags);
3510 memcpy(&measure_report, &priv->measure_report, size);
3511 priv->measurement_status = 0;
3512 spin_unlock_irqrestore(&priv->lock, flags);
3514 while (size && (PAGE_SIZE - len)) {
3515 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3516 PAGE_SIZE - len, 1);
3518 if (PAGE_SIZE - len)
3522 size -= min(size, 16U);
3528 static ssize_t store_measurement(struct device *d,
3529 struct device_attribute *attr,
3530 const char *buf, size_t count)
3532 struct iwl_priv *priv = dev_get_drvdata(d);
3533 struct ieee80211_measurement_params params = {
3534 .channel = le16_to_cpu(priv->active_rxon.channel),
3535 .start_time = cpu_to_le64(priv->_3945.last_tsf),
3536 .duration = cpu_to_le16(1),
3538 u8 type = IWL_MEASURE_BASIC;
3544 strncpy(buffer, buf, min(sizeof(buffer), count));
3545 channel = simple_strtoul(p, NULL, 0);
3547 params.channel = channel;
3550 while (*p && *p != ' ')
3553 type = simple_strtoul(p + 1, NULL, 0);
3556 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3557 "channel %d (for '%s')\n", type, params.channel, buf);
3558 iwl3945_get_measurement(priv, ¶ms, type);
3563 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3564 show_measurement, store_measurement);
3566 static ssize_t store_retry_rate(struct device *d,
3567 struct device_attribute *attr,
3568 const char *buf, size_t count)
3570 struct iwl_priv *priv = dev_get_drvdata(d);
3572 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3573 if (priv->retry_rate <= 0)
3574 priv->retry_rate = 1;
3579 static ssize_t show_retry_rate(struct device *d,
3580 struct device_attribute *attr, char *buf)
3582 struct iwl_priv *priv = dev_get_drvdata(d);
3583 return sprintf(buf, "%d", priv->retry_rate);
3586 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3590 static ssize_t show_channels(struct device *d,
3591 struct device_attribute *attr, char *buf)
3593 /* all this shit doesn't belong into sysfs anyway */
3597 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3599 static ssize_t show_antenna(struct device *d,
3600 struct device_attribute *attr, char *buf)
3602 struct iwl_priv *priv = dev_get_drvdata(d);
3604 if (!iwl_is_alive(priv))
3607 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3610 static ssize_t store_antenna(struct device *d,
3611 struct device_attribute *attr,
3612 const char *buf, size_t count)
3614 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3620 if (sscanf(buf, "%1i", &ant) != 1) {
3621 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3625 if ((ant >= 0) && (ant <= 2)) {
3626 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3627 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3629 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3635 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3637 static ssize_t show_status(struct device *d,
3638 struct device_attribute *attr, char *buf)
3640 struct iwl_priv *priv = dev_get_drvdata(d);
3641 if (!iwl_is_alive(priv))
3643 return sprintf(buf, "0x%08x\n", (int)priv->status);
3646 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3648 static ssize_t dump_error_log(struct device *d,
3649 struct device_attribute *attr,
3650 const char *buf, size_t count)
3652 struct iwl_priv *priv = dev_get_drvdata(d);
3653 char *p = (char *)buf;
3656 iwl3945_dump_nic_error_log(priv);
3658 return strnlen(buf, count);
3661 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3663 /*****************************************************************************
3665 * driver setup and tear down
3667 *****************************************************************************/
3669 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3671 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3673 init_waitqueue_head(&priv->wait_command_queue);
3675 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3676 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3677 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3678 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3679 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3680 INIT_DELAYED_WORK(&priv->_3945.rfkill_poll, iwl3945_rfkill_poll);
3681 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3682 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3683 INIT_WORK(&priv->start_internal_scan, iwl_bg_start_internal_scan);
3684 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3686 iwl3945_hw_setup_deferred_work(priv);
3688 if (priv->cfg->ops->lib->recover_from_tx_stall) {
3689 init_timer(&priv->monitor_recover);
3690 priv->monitor_recover.data = (unsigned long)priv;
3691 priv->monitor_recover.function =
3692 priv->cfg->ops->lib->recover_from_tx_stall;
3695 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3696 iwl3945_irq_tasklet, (unsigned long)priv);
3699 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3701 iwl3945_hw_cancel_deferred_work(priv);
3703 cancel_delayed_work_sync(&priv->init_alive_start);
3704 cancel_delayed_work(&priv->scan_check);
3705 cancel_delayed_work(&priv->alive_start);
3706 cancel_work_sync(&priv->start_internal_scan);
3707 cancel_work_sync(&priv->beacon_update);
3708 if (priv->cfg->ops->lib->recover_from_tx_stall)
3709 del_timer_sync(&priv->monitor_recover);
3712 static struct attribute *iwl3945_sysfs_entries[] = {
3713 &dev_attr_antenna.attr,
3714 &dev_attr_channels.attr,
3715 &dev_attr_dump_errors.attr,
3716 &dev_attr_flags.attr,
3717 &dev_attr_filter_flags.attr,
3718 &dev_attr_measurement.attr,
3719 &dev_attr_retry_rate.attr,
3720 &dev_attr_status.attr,
3721 &dev_attr_temperature.attr,
3722 &dev_attr_tx_power.attr,
3723 #ifdef CONFIG_IWLWIFI_DEBUG
3724 &dev_attr_debug_level.attr,
3729 static struct attribute_group iwl3945_attribute_group = {
3730 .name = NULL, /* put in device directory */
3731 .attrs = iwl3945_sysfs_entries,
3734 static struct ieee80211_ops iwl3945_hw_ops = {
3735 .tx = iwl3945_mac_tx,
3736 .start = iwl3945_mac_start,
3737 .stop = iwl3945_mac_stop,
3738 .add_interface = iwl_mac_add_interface,
3739 .remove_interface = iwl_mac_remove_interface,
3740 .config = iwl_mac_config,
3741 .configure_filter = iwl_configure_filter,
3742 .set_key = iwl3945_mac_set_key,
3743 .conf_tx = iwl_mac_conf_tx,
3744 .reset_tsf = iwl_mac_reset_tsf,
3745 .bss_info_changed = iwl_bss_info_changed,
3746 .hw_scan = iwl_mac_hw_scan,
3747 .sta_add = iwl3945_mac_sta_add,
3748 .sta_remove = iwl_mac_sta_remove,
3751 static int iwl3945_init_drv(struct iwl_priv *priv)
3754 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3756 priv->retry_rate = 1;
3757 priv->ibss_beacon = NULL;
3759 spin_lock_init(&priv->sta_lock);
3760 spin_lock_init(&priv->hcmd_lock);
3762 INIT_LIST_HEAD(&priv->free_frames);
3764 mutex_init(&priv->mutex);
3765 mutex_init(&priv->sync_cmd_mutex);
3767 priv->ieee_channels = NULL;
3768 priv->ieee_rates = NULL;
3769 priv->band = IEEE80211_BAND_2GHZ;
3771 priv->iw_mode = NL80211_IFTYPE_STATION;
3772 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3774 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3776 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3777 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3782 ret = iwl_init_channel_map(priv);
3784 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3788 /* Set up txpower settings in driver for all channels */
3789 if (iwl3945_txpower_set_from_eeprom(priv)) {
3791 goto err_free_channel_map;
3794 ret = iwlcore_init_geos(priv);
3796 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3797 goto err_free_channel_map;
3799 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3803 err_free_channel_map:
3804 iwl_free_channel_map(priv);
3809 #define IWL3945_MAX_PROBE_REQUEST 200
3811 static int iwl3945_setup_mac(struct iwl_priv *priv)
3814 struct ieee80211_hw *hw = priv->hw;
3816 hw->rate_control_algorithm = "iwl-3945-rs";
3817 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3818 hw->vif_data_size = sizeof(struct iwl_vif_priv);
3820 /* Tell mac80211 our characteristics */
3821 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3822 IEEE80211_HW_SPECTRUM_MGMT;
3824 if (!priv->cfg->broken_powersave)
3825 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3826 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3828 hw->wiphy->interface_modes =
3829 BIT(NL80211_IFTYPE_STATION) |
3830 BIT(NL80211_IFTYPE_ADHOC);
3832 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3833 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3835 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3836 /* we create the 802.11 header and a zero-length SSID element */
3837 hw->wiphy->max_scan_ie_len = IWL3945_MAX_PROBE_REQUEST - 24 - 2;
3839 /* Default value; 4 EDCA QOS priorities */
3842 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3843 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3844 &priv->bands[IEEE80211_BAND_2GHZ];
3846 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3847 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3848 &priv->bands[IEEE80211_BAND_5GHZ];
3850 ret = ieee80211_register_hw(priv->hw);
3852 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3855 priv->mac80211_registered = 1;
3860 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3863 struct iwl_priv *priv;
3864 struct ieee80211_hw *hw;
3865 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3866 struct iwl3945_eeprom *eeprom;
3867 unsigned long flags;
3869 /***********************
3870 * 1. Allocating HW data
3871 * ********************/
3873 /* mac80211 allocates memory for this device instance, including
3874 * space for this driver's private structure */
3875 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3877 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3882 SET_IEEE80211_DEV(hw, &pdev->dev);
3885 * Disabling hardware scan means that mac80211 will perform scans
3886 * "the hard way", rather than using device's scan.
3888 if (iwl3945_mod_params.disable_hw_scan) {
3889 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3890 iwl3945_hw_ops.hw_scan = NULL;
3894 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3896 priv->pci_dev = pdev;
3897 priv->inta_mask = CSR_INI_SET_MASK;
3899 if (iwl_alloc_traffic_mem(priv))
3900 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3902 /***************************
3903 * 2. Initializing PCI bus
3904 * *************************/
3905 if (pci_enable_device(pdev)) {
3907 goto out_ieee80211_free_hw;
3910 pci_set_master(pdev);
3912 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3914 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3916 IWL_WARN(priv, "No suitable DMA available.\n");
3917 goto out_pci_disable_device;
3920 pci_set_drvdata(pdev, priv);
3921 err = pci_request_regions(pdev, DRV_NAME);
3923 goto out_pci_disable_device;
3925 /***********************
3926 * 3. Read REV Register
3927 * ********************/
3928 priv->hw_base = pci_iomap(pdev, 0, 0);
3929 if (!priv->hw_base) {
3931 goto out_pci_release_regions;
3934 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3935 (unsigned long long) pci_resource_len(pdev, 0));
3936 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3938 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3939 * PCI Tx retries from interfering with C3 CPU state */
3940 pci_write_config_byte(pdev, 0x41, 0x00);
3942 /* these spin locks will be used in apm_ops.init and EEPROM access
3943 * we should init now
3945 spin_lock_init(&priv->reg_lock);
3946 spin_lock_init(&priv->lock);
3949 * stop and reset the on-board processor just in case it is in a
3950 * strange state ... like being left stranded by a primary kernel
3951 * and this is now the kdump kernel trying to start up
3953 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3955 /***********************
3957 * ********************/
3959 /* Read the EEPROM */
3960 err = iwl_eeprom_init(priv);
3962 IWL_ERR(priv, "Unable to init EEPROM\n");
3965 /* MAC Address location in EEPROM same for 3945/4965 */
3966 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3967 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", eeprom->mac_address);
3968 SET_IEEE80211_PERM_ADDR(priv->hw, eeprom->mac_address);
3970 /***********************
3971 * 5. Setup HW Constants
3972 * ********************/
3973 /* Device-specific setup */
3974 if (iwl3945_hw_set_hw_params(priv)) {
3975 IWL_ERR(priv, "failed to set hw settings\n");
3976 goto out_eeprom_free;
3979 /***********************
3981 * ********************/
3983 err = iwl3945_init_drv(priv);
3985 IWL_ERR(priv, "initializing driver failed\n");
3986 goto out_unset_hw_params;
3989 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
3992 /***********************
3994 * ********************/
3996 spin_lock_irqsave(&priv->lock, flags);
3997 iwl_disable_interrupts(priv);
3998 spin_unlock_irqrestore(&priv->lock, flags);
4000 pci_enable_msi(priv->pci_dev);
4002 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4003 IRQF_SHARED, DRV_NAME, priv);
4005 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4006 goto out_disable_msi;
4009 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4011 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4012 goto out_release_irq;
4015 iwl_set_rxon_channel(priv,
4016 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4017 iwl3945_setup_deferred_work(priv);
4018 iwl3945_setup_rx_handlers(priv);
4019 iwl_power_initialize(priv);
4021 /*********************************
4022 * 8. Setup and Register mac80211
4023 * *******************************/
4025 iwl_enable_interrupts(priv);
4027 err = iwl3945_setup_mac(priv);
4029 goto out_remove_sysfs;
4031 err = iwl_dbgfs_register(priv, DRV_NAME);
4033 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4035 /* Start monitoring the killswitch */
4036 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
4042 destroy_workqueue(priv->workqueue);
4043 priv->workqueue = NULL;
4044 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4046 free_irq(priv->pci_dev->irq, priv);
4048 pci_disable_msi(priv->pci_dev);
4049 iwlcore_free_geos(priv);
4050 iwl_free_channel_map(priv);
4051 out_unset_hw_params:
4052 iwl3945_unset_hw_params(priv);
4054 iwl_eeprom_free(priv);
4056 pci_iounmap(pdev, priv->hw_base);
4057 out_pci_release_regions:
4058 pci_release_regions(pdev);
4059 out_pci_disable_device:
4060 pci_set_drvdata(pdev, NULL);
4061 pci_disable_device(pdev);
4062 out_ieee80211_free_hw:
4063 iwl_free_traffic_mem(priv);
4064 ieee80211_free_hw(priv->hw);
4069 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4071 struct iwl_priv *priv = pci_get_drvdata(pdev);
4072 unsigned long flags;
4077 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4079 iwl_dbgfs_unregister(priv);
4081 set_bit(STATUS_EXIT_PENDING, &priv->status);
4083 if (priv->mac80211_registered) {
4084 ieee80211_unregister_hw(priv->hw);
4085 priv->mac80211_registered = 0;
4091 * Make sure device is reset to low power before unloading driver.
4092 * This may be redundant with iwl_down(), but there are paths to
4093 * run iwl_down() without calling apm_ops.stop(), and there are
4094 * paths to avoid running iwl_down() at all before leaving driver.
4095 * This (inexpensive) call *makes sure* device is reset.
4097 priv->cfg->ops->lib->apm_ops.stop(priv);
4099 /* make sure we flush any pending irq or
4100 * tasklet for the driver
4102 spin_lock_irqsave(&priv->lock, flags);
4103 iwl_disable_interrupts(priv);
4104 spin_unlock_irqrestore(&priv->lock, flags);
4106 iwl_synchronize_irq(priv);
4108 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4110 cancel_delayed_work_sync(&priv->_3945.rfkill_poll);
4112 iwl3945_dealloc_ucode_pci(priv);
4115 iwl3945_rx_queue_free(priv, &priv->rxq);
4116 iwl3945_hw_txq_ctx_free(priv);
4118 iwl3945_unset_hw_params(priv);
4120 /*netif_stop_queue(dev); */
4121 flush_workqueue(priv->workqueue);
4123 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4124 * priv->workqueue... so we can't take down the workqueue
4126 destroy_workqueue(priv->workqueue);
4127 priv->workqueue = NULL;
4128 iwl_free_traffic_mem(priv);
4130 free_irq(pdev->irq, priv);
4131 pci_disable_msi(pdev);
4133 pci_iounmap(pdev, priv->hw_base);
4134 pci_release_regions(pdev);
4135 pci_disable_device(pdev);
4136 pci_set_drvdata(pdev, NULL);
4138 iwl_free_channel_map(priv);
4139 iwlcore_free_geos(priv);
4140 kfree(priv->scan_cmd);
4141 if (priv->ibss_beacon)
4142 dev_kfree_skb(priv->ibss_beacon);
4144 ieee80211_free_hw(priv->hw);
4148 /*****************************************************************************
4150 * driver and module entry point
4152 *****************************************************************************/
4154 static struct pci_driver iwl3945_driver = {
4156 .id_table = iwl3945_hw_card_ids,
4157 .probe = iwl3945_pci_probe,
4158 .remove = __devexit_p(iwl3945_pci_remove),
4160 .suspend = iwl_pci_suspend,
4161 .resume = iwl_pci_resume,
4165 static int __init iwl3945_init(void)
4169 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4170 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4172 ret = iwl3945_rate_control_register();
4174 printk(KERN_ERR DRV_NAME
4175 "Unable to register rate control algorithm: %d\n", ret);
4179 ret = pci_register_driver(&iwl3945_driver);
4181 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4182 goto error_register;
4188 iwl3945_rate_control_unregister();
4192 static void __exit iwl3945_exit(void)
4194 pci_unregister_driver(&iwl3945_driver);
4195 iwl3945_rate_control_unregister();
4198 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4200 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4201 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4202 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4203 MODULE_PARM_DESC(swcrypto,
4204 "using software crypto (default 1 [software])\n");
4205 #ifdef CONFIG_IWLWIFI_DEBUG
4206 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4207 MODULE_PARM_DESC(debug, "debug output mask");
4209 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4211 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4212 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4213 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4215 module_exit(iwl3945_exit);
4216 module_init(iwl3945_init);