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 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/pci.h>
36 #include <linux/pci-aspm.h>
37 #include <linux/slab.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/delay.h>
40 #include <linux/sched.h>
41 #include <linux/skbuff.h>
42 #include <linux/netdevice.h>
43 #include <linux/wireless.h>
44 #include <linux/firmware.h>
45 #include <linux/etherdevice.h>
46 #include <linux/if_arp.h>
48 #include <net/ieee80211_radiotap.h>
49 #include <net/mac80211.h>
51 #include <asm/div64.h>
53 #define DRV_NAME "iwl3945"
56 #include "iwl-3945-fh.h"
57 #include "iwl-commands.h"
61 #include "iwl-helpers.h"
63 #include "iwl-spectrum.h"
66 * module name, copyright, version, etc.
69 #define DRV_DESCRIPTION \
70 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
72 #ifdef CONFIG_IWLWIFI_DEBUG
79 * add "s" to indicate spectrum measurement included.
80 * we add it here to be consistent with previous releases in which
81 * this was configurable.
83 #define DRV_VERSION IWLWIFI_VERSION VD "s"
84 #define DRV_COPYRIGHT "Copyright(c) 2003-2010 Intel Corporation"
85 #define DRV_AUTHOR "<ilw@linux.intel.com>"
87 MODULE_DESCRIPTION(DRV_DESCRIPTION);
88 MODULE_VERSION(DRV_VERSION);
89 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
90 MODULE_LICENSE("GPL");
92 /* module parameters */
93 struct iwl_mod_params iwl3945_mod_params = {
96 /* the rest are 0 by default */
100 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
101 * @priv: eeprom and antenna fields are used to determine antenna flags
103 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
104 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
106 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
107 * IWL_ANTENNA_MAIN - Force MAIN antenna
108 * IWL_ANTENNA_AUX - Force AUX antenna
110 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
112 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
114 switch (iwl3945_mod_params.antenna) {
115 case IWL_ANTENNA_DIVERSITY:
118 case IWL_ANTENNA_MAIN:
119 if (eeprom->antenna_switch_type)
120 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
121 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
123 case IWL_ANTENNA_AUX:
124 if (eeprom->antenna_switch_type)
125 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
126 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
129 /* bad antenna selector value */
130 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
131 iwl3945_mod_params.antenna);
133 return 0; /* "diversity" is default if error */
136 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
137 struct ieee80211_key_conf *keyconf,
141 __le16 key_flags = 0;
144 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
145 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
147 if (sta_id == priv->hw_params.bcast_sta_id)
148 key_flags |= STA_KEY_MULTICAST_MSK;
150 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
151 keyconf->hw_key_idx = keyconf->keyidx;
152 key_flags &= ~STA_KEY_FLG_INVALID;
154 spin_lock_irqsave(&priv->sta_lock, flags);
155 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
156 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
157 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
160 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
163 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
164 == STA_KEY_FLG_NO_ENC)
165 priv->stations[sta_id].sta.key.key_offset =
166 iwl_get_free_ucode_key_index(priv);
167 /* else, we are overriding an existing key => no need to allocated room
170 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
171 "no space for a new key");
173 priv->stations[sta_id].sta.key.key_flags = key_flags;
174 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
175 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
177 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
179 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
181 spin_unlock_irqrestore(&priv->sta_lock, flags);
186 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
187 struct ieee80211_key_conf *keyconf,
193 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
194 struct ieee80211_key_conf *keyconf,
200 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
203 struct iwl_addsta_cmd sta_cmd;
205 spin_lock_irqsave(&priv->sta_lock, flags);
206 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
207 memset(&priv->stations[sta_id].sta.key, 0,
208 sizeof(struct iwl4965_keyinfo));
209 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
210 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
211 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
212 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
213 spin_unlock_irqrestore(&priv->sta_lock, flags);
215 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
216 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
219 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
220 struct ieee80211_key_conf *keyconf, u8 sta_id)
224 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
226 switch (keyconf->alg) {
228 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
231 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
234 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
237 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
241 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
242 keyconf->alg, keyconf->keylen, keyconf->keyidx,
248 static int iwl3945_remove_static_key(struct iwl_priv *priv)
250 int ret = -EOPNOTSUPP;
255 static int iwl3945_set_static_key(struct iwl_priv *priv,
256 struct ieee80211_key_conf *key)
258 if (key->alg == ALG_WEP)
261 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
265 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
267 struct list_head *element;
269 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
272 while (!list_empty(&priv->free_frames)) {
273 element = priv->free_frames.next;
275 kfree(list_entry(element, struct iwl3945_frame, list));
276 priv->frames_count--;
279 if (priv->frames_count) {
280 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
282 priv->frames_count = 0;
286 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
288 struct iwl3945_frame *frame;
289 struct list_head *element;
290 if (list_empty(&priv->free_frames)) {
291 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
293 IWL_ERR(priv, "Could not allocate frame!\n");
297 priv->frames_count++;
301 element = priv->free_frames.next;
303 return list_entry(element, struct iwl3945_frame, list);
306 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
308 memset(frame, 0, sizeof(*frame));
309 list_add(&frame->list, &priv->free_frames);
312 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
313 struct ieee80211_hdr *hdr,
317 if (!iwl_is_associated(priv) || !priv->ibss_beacon)
320 if (priv->ibss_beacon->len > left)
323 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
325 return priv->ibss_beacon->len;
328 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
330 struct iwl3945_frame *frame;
331 unsigned int frame_size;
335 frame = iwl3945_get_free_frame(priv);
338 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
343 rate = iwl_rate_get_lowest_plcp(priv);
345 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
347 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
350 iwl3945_free_frame(priv, frame);
355 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
357 if (priv->_3945.shared_virt)
358 dma_free_coherent(&priv->pci_dev->dev,
359 sizeof(struct iwl3945_shared),
360 priv->_3945.shared_virt,
361 priv->_3945.shared_phys);
364 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
365 struct ieee80211_tx_info *info,
366 struct iwl_device_cmd *cmd,
367 struct sk_buff *skb_frag,
370 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
371 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
373 switch (keyinfo->alg) {
375 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
376 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
377 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
384 tx_cmd->sec_ctl = TX_CMD_SEC_WEP |
385 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
387 if (keyinfo->keylen == 13)
388 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
390 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
392 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
393 "with key %d\n", info->control.hw_key->hw_key_idx);
397 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
403 * handle build REPLY_TX command notification.
405 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
406 struct iwl_device_cmd *cmd,
407 struct ieee80211_tx_info *info,
408 struct ieee80211_hdr *hdr, u8 std_id)
410 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
411 __le32 tx_flags = tx_cmd->tx_flags;
412 __le16 fc = hdr->frame_control;
414 tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
415 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
416 tx_flags |= TX_CMD_FLG_ACK_MSK;
417 if (ieee80211_is_mgmt(fc))
418 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
419 if (ieee80211_is_probe_resp(fc) &&
420 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
421 tx_flags |= TX_CMD_FLG_TSF_MSK;
423 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
424 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
427 tx_cmd->sta_id = std_id;
428 if (ieee80211_has_morefrags(fc))
429 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
431 if (ieee80211_is_data_qos(fc)) {
432 u8 *qc = ieee80211_get_qos_ctl(hdr);
433 tx_cmd->tid_tspec = qc[0] & 0xf;
434 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
436 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
439 priv->cfg->ops->utils->tx_cmd_protection(priv, info, fc, &tx_flags);
441 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
442 if (ieee80211_is_mgmt(fc)) {
443 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
444 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
446 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
448 tx_cmd->timeout.pm_frame_timeout = 0;
451 tx_cmd->driver_txop = 0;
452 tx_cmd->tx_flags = tx_flags;
453 tx_cmd->next_frame_len = 0;
457 * start REPLY_TX command process
459 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
461 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
462 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
463 struct iwl3945_tx_cmd *tx_cmd;
464 struct iwl_tx_queue *txq = NULL;
465 struct iwl_queue *q = NULL;
466 struct iwl_device_cmd *out_cmd;
467 struct iwl_cmd_meta *out_meta;
468 dma_addr_t phys_addr;
469 dma_addr_t txcmd_phys;
470 int txq_id = skb_get_queue_mapping(skb);
471 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
477 u8 wait_write_ptr = 0;
480 spin_lock_irqsave(&priv->lock, flags);
481 if (iwl_is_rfkill(priv)) {
482 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
486 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
487 IWL_ERR(priv, "ERROR: No TX rate available.\n");
491 unicast = !is_multicast_ether_addr(hdr->addr1);
494 fc = hdr->frame_control;
496 #ifdef CONFIG_IWLWIFI_DEBUG
497 if (ieee80211_is_auth(fc))
498 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
499 else if (ieee80211_is_assoc_req(fc))
500 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
501 else if (ieee80211_is_reassoc_req(fc))
502 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
505 spin_unlock_irqrestore(&priv->lock, flags);
507 hdr_len = ieee80211_hdrlen(fc);
509 /* Find index into station table for destination station */
510 sta_id = iwl_sta_id_or_broadcast(priv, info->control.sta);
511 if (sta_id == IWL_INVALID_STATION) {
512 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
517 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
519 if (ieee80211_is_data_qos(fc)) {
520 u8 *qc = ieee80211_get_qos_ctl(hdr);
521 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
522 if (unlikely(tid >= MAX_TID_COUNT))
526 /* Descriptor for chosen Tx queue */
527 txq = &priv->txq[txq_id];
530 if ((iwl_queue_space(q) < q->high_mark))
533 spin_lock_irqsave(&priv->lock, flags);
535 idx = get_cmd_index(q, q->write_ptr, 0);
537 /* Set up driver data for this TFD */
538 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
539 txq->txb[q->write_ptr].skb = skb;
541 /* Init first empty entry in queue's array of Tx/cmd buffers */
542 out_cmd = txq->cmd[idx];
543 out_meta = &txq->meta[idx];
544 tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
545 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
546 memset(tx_cmd, 0, sizeof(*tx_cmd));
549 * Set up the Tx-command (not MAC!) header.
550 * Store the chosen Tx queue and TFD index within the sequence field;
551 * after Tx, uCode's Tx response will return this value so driver can
552 * locate the frame within the tx queue and do post-tx processing.
554 out_cmd->hdr.cmd = REPLY_TX;
555 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
556 INDEX_TO_SEQ(q->write_ptr)));
558 /* Copy MAC header from skb into command buffer */
559 memcpy(tx_cmd->hdr, hdr, hdr_len);
562 if (info->control.hw_key)
563 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
565 /* TODO need this for burst mode later on */
566 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
568 /* set is_hcca to 0; it probably will never be implemented */
569 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
571 /* Total # bytes to be transmitted */
573 tx_cmd->len = cpu_to_le16(len);
575 iwl_dbg_log_tx_data_frame(priv, len, hdr);
576 iwl_update_stats(priv, true, fc, len);
577 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
578 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
580 if (!ieee80211_has_morefrags(hdr->frame_control)) {
581 txq->need_update = 1;
584 txq->need_update = 0;
587 IWL_DEBUG_TX(priv, "sequence nr = 0X%x\n",
588 le16_to_cpu(out_cmd->hdr.sequence));
589 IWL_DEBUG_TX(priv, "tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags));
590 iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
591 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
592 ieee80211_hdrlen(fc));
595 * Use the first empty entry in this queue's command buffer array
596 * to contain the Tx command and MAC header concatenated together
597 * (payload data will be in another buffer).
598 * Size of this varies, due to varying MAC header length.
599 * If end is not dword aligned, we'll have 2 extra bytes at the end
600 * of the MAC header (device reads on dword boundaries).
601 * We'll tell device about this padding later.
603 len = sizeof(struct iwl3945_tx_cmd) +
604 sizeof(struct iwl_cmd_header) + hdr_len;
607 len = (len + 3) & ~3;
614 /* Physical address of this Tx command's header (not MAC header!),
615 * within command buffer array. */
616 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
617 len, PCI_DMA_TODEVICE);
618 /* we do not map meta data ... so we can safely access address to
619 * provide to unmap command*/
620 dma_unmap_addr_set(out_meta, mapping, txcmd_phys);
621 dma_unmap_len_set(out_meta, len, len);
623 /* Add buffer containing Tx command and MAC(!) header to TFD's
625 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
626 txcmd_phys, len, 1, 0);
629 /* Set up TFD's 2nd entry to point directly to remainder of skb,
630 * if any (802.11 null frames have no payload). */
631 len = skb->len - hdr_len;
633 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
634 len, PCI_DMA_TODEVICE);
635 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
641 /* Tell device the write index *just past* this latest filled TFD */
642 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
643 iwl_txq_update_write_ptr(priv, txq);
644 spin_unlock_irqrestore(&priv->lock, flags);
646 if ((iwl_queue_space(q) < q->high_mark)
647 && priv->mac80211_registered) {
648 if (wait_write_ptr) {
649 spin_lock_irqsave(&priv->lock, flags);
650 txq->need_update = 1;
651 iwl_txq_update_write_ptr(priv, txq);
652 spin_unlock_irqrestore(&priv->lock, flags);
655 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
661 spin_unlock_irqrestore(&priv->lock, flags);
666 static int iwl3945_get_measurement(struct iwl_priv *priv,
667 struct ieee80211_measurement_params *params,
670 struct iwl_spectrum_cmd spectrum;
671 struct iwl_rx_packet *pkt;
672 struct iwl_host_cmd cmd = {
673 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
674 .data = (void *)&spectrum,
675 .flags = CMD_WANT_SKB,
677 u32 add_time = le64_to_cpu(params->start_time);
679 int spectrum_resp_status;
680 int duration = le16_to_cpu(params->duration);
682 if (iwl_is_associated(priv))
683 add_time = iwl_usecs_to_beacons(priv,
684 le64_to_cpu(params->start_time) - priv->_3945.last_tsf,
685 le16_to_cpu(priv->rxon_timing.beacon_interval));
687 memset(&spectrum, 0, sizeof(spectrum));
689 spectrum.channel_count = cpu_to_le16(1);
691 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
692 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
693 cmd.len = sizeof(spectrum);
694 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
696 if (iwl_is_associated(priv))
697 spectrum.start_time =
698 iwl_add_beacon_time(priv,
699 priv->_3945.last_beacon_time, add_time,
700 le16_to_cpu(priv->rxon_timing.beacon_interval));
702 spectrum.start_time = 0;
704 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
705 spectrum.channels[0].channel = params->channel;
706 spectrum.channels[0].type = type;
707 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
708 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
709 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
711 rc = iwl_send_cmd_sync(priv, &cmd);
715 pkt = (struct iwl_rx_packet *)cmd.reply_page;
716 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
717 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
721 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
722 switch (spectrum_resp_status) {
723 case 0: /* Command will be handled */
724 if (pkt->u.spectrum.id != 0xff) {
725 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
727 priv->measurement_status &= ~MEASUREMENT_READY;
729 priv->measurement_status |= MEASUREMENT_ACTIVE;
733 case 1: /* Command will not be handled */
738 iwl_free_pages(priv, cmd.reply_page);
743 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
744 struct iwl_rx_mem_buffer *rxb)
746 struct iwl_rx_packet *pkt = rxb_addr(rxb);
747 struct iwl_alive_resp *palive;
748 struct delayed_work *pwork;
750 palive = &pkt->u.alive_frame;
752 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
754 palive->is_valid, palive->ver_type,
755 palive->ver_subtype);
757 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
758 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
759 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
760 sizeof(struct iwl_alive_resp));
761 pwork = &priv->init_alive_start;
763 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
764 memcpy(&priv->card_alive, &pkt->u.alive_frame,
765 sizeof(struct iwl_alive_resp));
766 pwork = &priv->alive_start;
767 iwl3945_disable_events(priv);
770 /* We delay the ALIVE response by 5ms to
771 * give the HW RF Kill time to activate... */
772 if (palive->is_valid == UCODE_VALID_OK)
773 queue_delayed_work(priv->workqueue, pwork,
774 msecs_to_jiffies(5));
776 IWL_WARN(priv, "uCode did not respond OK.\n");
779 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
780 struct iwl_rx_mem_buffer *rxb)
782 #ifdef CONFIG_IWLWIFI_DEBUG
783 struct iwl_rx_packet *pkt = rxb_addr(rxb);
786 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
789 static void iwl3945_bg_beacon_update(struct work_struct *work)
791 struct iwl_priv *priv =
792 container_of(work, struct iwl_priv, beacon_update);
793 struct sk_buff *beacon;
795 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
796 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
799 IWL_ERR(priv, "update beacon failed\n");
803 mutex_lock(&priv->mutex);
804 /* new beacon skb is allocated every time; dispose previous.*/
805 if (priv->ibss_beacon)
806 dev_kfree_skb(priv->ibss_beacon);
808 priv->ibss_beacon = beacon;
809 mutex_unlock(&priv->mutex);
811 iwl3945_send_beacon_cmd(priv);
814 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
815 struct iwl_rx_mem_buffer *rxb)
817 #ifdef CONFIG_IWLWIFI_DEBUG
818 struct iwl_rx_packet *pkt = rxb_addr(rxb);
819 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
820 u8 rate = beacon->beacon_notify_hdr.rate;
822 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
823 "tsf %d %d rate %d\n",
824 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
825 beacon->beacon_notify_hdr.failure_frame,
826 le32_to_cpu(beacon->ibss_mgr_status),
827 le32_to_cpu(beacon->high_tsf),
828 le32_to_cpu(beacon->low_tsf), rate);
831 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
832 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
833 queue_work(priv->workqueue, &priv->beacon_update);
836 /* Handle notification from uCode that card's power state is changing
837 * due to software, hardware, or critical temperature RFKILL */
838 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
839 struct iwl_rx_mem_buffer *rxb)
841 struct iwl_rx_packet *pkt = rxb_addr(rxb);
842 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
843 unsigned long status = priv->status;
845 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
846 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
847 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
849 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
850 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
852 if (flags & HW_CARD_DISABLED)
853 set_bit(STATUS_RF_KILL_HW, &priv->status);
855 clear_bit(STATUS_RF_KILL_HW, &priv->status);
858 iwl_scan_cancel(priv);
860 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
861 test_bit(STATUS_RF_KILL_HW, &priv->status)))
862 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
863 test_bit(STATUS_RF_KILL_HW, &priv->status));
865 wake_up_interruptible(&priv->wait_command_queue);
869 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
871 * Setup the RX handlers for each of the reply types sent from the uCode
874 * This function chains into the hardware specific files for them to setup
875 * any hardware specific handlers as well.
877 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
879 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
880 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
881 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
882 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
883 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
884 iwl_rx_spectrum_measure_notif;
885 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
886 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
887 iwl_rx_pm_debug_statistics_notif;
888 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
891 * The same handler is used for both the REPLY to a discrete
892 * statistics request from the host as well as for the periodic
893 * statistics notifications (after received beacons) from the uCode.
895 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_reply_statistics;
896 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
898 iwl_setup_rx_scan_handlers(priv);
899 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
901 /* Set up hardware specific Rx handlers */
902 iwl3945_hw_rx_handler_setup(priv);
905 /************************** RX-FUNCTIONS ****************************/
907 * Rx theory of operation
909 * The host allocates 32 DMA target addresses and passes the host address
910 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
914 * The host/firmware share two index registers for managing the Rx buffers.
916 * The READ index maps to the first position that the firmware may be writing
917 * to -- the driver can read up to (but not including) this position and get
919 * The READ index is managed by the firmware once the card is enabled.
921 * The WRITE index maps to the last position the driver has read from -- the
922 * position preceding WRITE is the last slot the firmware can place a packet.
924 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
927 * During initialization, the host sets up the READ queue position to the first
928 * INDEX position, and WRITE to the last (READ - 1 wrapped)
930 * When the firmware places a packet in a buffer, it will advance the READ index
931 * and fire the RX interrupt. The driver can then query the READ index and
932 * process as many packets as possible, moving the WRITE index forward as it
933 * resets the Rx queue buffers with new memory.
935 * The management in the driver is as follows:
936 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
937 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
938 * to replenish the iwl->rxq->rx_free.
939 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
940 * iwl->rxq is replenished and the READ INDEX is updated (updating the
941 * 'processed' and 'read' driver indexes as well)
942 * + A received packet is processed and handed to the kernel network stack,
943 * detached from the iwl->rxq. The driver 'processed' index is updated.
944 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
945 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
946 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
947 * were enough free buffers and RX_STALLED is set it is cleared.
952 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
953 * iwl3945_rx_queue_restock
954 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
955 * queue, updates firmware pointers, and updates
956 * the WRITE index. If insufficient rx_free buffers
957 * are available, schedules iwl3945_rx_replenish
959 * -- enable interrupts --
960 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
961 * READ INDEX, detaching the SKB from the pool.
962 * Moves the packet buffer from queue to rx_used.
963 * Calls iwl3945_rx_queue_restock to refill any empty
970 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
972 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
975 return cpu_to_le32((u32)dma_addr);
979 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
981 * If there are slots in the RX queue that need to be restocked,
982 * and we have free pre-allocated buffers, fill the ranks as much
983 * as we can, pulling from rx_free.
985 * This moves the 'write' index forward to catch up with 'processed', and
986 * also updates the memory address in the firmware to reference the new
989 static void iwl3945_rx_queue_restock(struct iwl_priv *priv)
991 struct iwl_rx_queue *rxq = &priv->rxq;
992 struct list_head *element;
993 struct iwl_rx_mem_buffer *rxb;
997 spin_lock_irqsave(&rxq->lock, flags);
998 write = rxq->write & ~0x7;
999 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1000 /* Get next free Rx buffer, remove from free list */
1001 element = rxq->rx_free.next;
1002 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1005 /* Point to Rx buffer via next RBD in circular buffer */
1006 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1007 rxq->queue[rxq->write] = rxb;
1008 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1011 spin_unlock_irqrestore(&rxq->lock, flags);
1012 /* If the pre-allocated buffer pool is dropping low, schedule to
1014 if (rxq->free_count <= RX_LOW_WATERMARK)
1015 queue_work(priv->workqueue, &priv->rx_replenish);
1018 /* If we've added more space for the firmware to place data, tell it.
1019 * Increment device's write pointer in multiples of 8. */
1020 if ((rxq->write_actual != (rxq->write & ~0x7))
1021 || (abs(rxq->write - rxq->read) > 7)) {
1022 spin_lock_irqsave(&rxq->lock, flags);
1023 rxq->need_update = 1;
1024 spin_unlock_irqrestore(&rxq->lock, flags);
1025 iwl_rx_queue_update_write_ptr(priv, rxq);
1030 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1032 * When moving to rx_free an SKB is allocated for the slot.
1034 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1035 * This is called as a scheduled work item (except for during initialization)
1037 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1039 struct iwl_rx_queue *rxq = &priv->rxq;
1040 struct list_head *element;
1041 struct iwl_rx_mem_buffer *rxb;
1043 unsigned long flags;
1044 gfp_t gfp_mask = priority;
1047 spin_lock_irqsave(&rxq->lock, flags);
1049 if (list_empty(&rxq->rx_used)) {
1050 spin_unlock_irqrestore(&rxq->lock, flags);
1053 spin_unlock_irqrestore(&rxq->lock, flags);
1055 if (rxq->free_count > RX_LOW_WATERMARK)
1056 gfp_mask |= __GFP_NOWARN;
1058 if (priv->hw_params.rx_page_order > 0)
1059 gfp_mask |= __GFP_COMP;
1061 /* Alloc a new receive buffer */
1062 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1064 if (net_ratelimit())
1065 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1066 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1068 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1069 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1071 /* We don't reschedule replenish work here -- we will
1072 * call the restock method and if it still needs
1073 * more buffers it will schedule replenish */
1077 spin_lock_irqsave(&rxq->lock, flags);
1078 if (list_empty(&rxq->rx_used)) {
1079 spin_unlock_irqrestore(&rxq->lock, flags);
1080 __free_pages(page, priv->hw_params.rx_page_order);
1083 element = rxq->rx_used.next;
1084 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1086 spin_unlock_irqrestore(&rxq->lock, flags);
1089 /* Get physical address of RB/SKB */
1090 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1091 PAGE_SIZE << priv->hw_params.rx_page_order,
1092 PCI_DMA_FROMDEVICE);
1094 spin_lock_irqsave(&rxq->lock, flags);
1096 list_add_tail(&rxb->list, &rxq->rx_free);
1098 priv->alloc_rxb_page++;
1100 spin_unlock_irqrestore(&rxq->lock, flags);
1104 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1106 unsigned long flags;
1108 spin_lock_irqsave(&rxq->lock, flags);
1109 INIT_LIST_HEAD(&rxq->rx_free);
1110 INIT_LIST_HEAD(&rxq->rx_used);
1111 /* Fill the rx_used queue with _all_ of the Rx buffers */
1112 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1113 /* In the reset function, these buffers may have been allocated
1114 * to an SKB, so we need to unmap and free potential storage */
1115 if (rxq->pool[i].page != NULL) {
1116 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1117 PAGE_SIZE << priv->hw_params.rx_page_order,
1118 PCI_DMA_FROMDEVICE);
1119 __iwl_free_pages(priv, rxq->pool[i].page);
1120 rxq->pool[i].page = NULL;
1122 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1125 /* Set us so that we have processed and used all buffers, but have
1126 * not restocked the Rx queue with fresh buffers */
1127 rxq->read = rxq->write = 0;
1128 rxq->write_actual = 0;
1129 rxq->free_count = 0;
1130 spin_unlock_irqrestore(&rxq->lock, flags);
1133 void iwl3945_rx_replenish(void *data)
1135 struct iwl_priv *priv = data;
1136 unsigned long flags;
1138 iwl3945_rx_allocate(priv, GFP_KERNEL);
1140 spin_lock_irqsave(&priv->lock, flags);
1141 iwl3945_rx_queue_restock(priv);
1142 spin_unlock_irqrestore(&priv->lock, flags);
1145 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1147 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1149 iwl3945_rx_queue_restock(priv);
1153 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1154 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1155 * This free routine walks the list of POOL entries and if SKB is set to
1156 * non NULL it is unmapped and freed
1158 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1161 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1162 if (rxq->pool[i].page != NULL) {
1163 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1164 PAGE_SIZE << priv->hw_params.rx_page_order,
1165 PCI_DMA_FROMDEVICE);
1166 __iwl_free_pages(priv, rxq->pool[i].page);
1167 rxq->pool[i].page = NULL;
1171 dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1173 dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
1174 rxq->rb_stts, rxq->rb_stts_dma);
1176 rxq->rb_stts = NULL;
1180 /* Convert linear signal-to-noise ratio into dB */
1181 static u8 ratio2dB[100] = {
1182 /* 0 1 2 3 4 5 6 7 8 9 */
1183 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1184 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1185 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1186 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1187 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1188 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1189 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1190 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1191 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1192 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1195 /* Calculates a relative dB value from a ratio of linear
1196 * (i.e. not dB) signal levels.
1197 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1198 int iwl3945_calc_db_from_ratio(int sig_ratio)
1200 /* 1000:1 or higher just report as 60 dB */
1201 if (sig_ratio >= 1000)
1204 /* 100:1 or higher, divide by 10 and use table,
1205 * add 20 dB to make up for divide by 10 */
1206 if (sig_ratio >= 100)
1207 return 20 + (int)ratio2dB[sig_ratio/10];
1209 /* We shouldn't see this */
1213 /* Use table for ratios 1:1 - 99:1 */
1214 return (int)ratio2dB[sig_ratio];
1218 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1220 * Uses the priv->rx_handlers callback function array to invoke
1221 * the appropriate handlers, including command responses,
1222 * frame-received notifications, and other notifications.
1224 static void iwl3945_rx_handle(struct iwl_priv *priv)
1226 struct iwl_rx_mem_buffer *rxb;
1227 struct iwl_rx_packet *pkt;
1228 struct iwl_rx_queue *rxq = &priv->rxq;
1231 unsigned long flags;
1234 int total_empty = 0;
1236 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1237 * buffer that the driver may process (last buffer filled by ucode). */
1238 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1241 /* calculate total frames need to be restock after handling RX */
1242 total_empty = r - rxq->write_actual;
1243 if (total_empty < 0)
1244 total_empty += RX_QUEUE_SIZE;
1246 if (total_empty > (RX_QUEUE_SIZE / 2))
1248 /* Rx interrupt, but nothing sent from uCode */
1250 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 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1270 len += sizeof(u32); /* account for status word */
1271 trace_iwlwifi_dev_rx(priv, pkt, len);
1273 /* Reclaim a command buffer only if this packet is a response
1274 * to a (driver-originated) command.
1275 * If the packet (e.g. Rx frame) originated from uCode,
1276 * there is no command buffer to reclaim.
1277 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1278 * but apparently a few don't get set; catch them here. */
1279 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1280 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1281 (pkt->hdr.cmd != REPLY_TX);
1283 /* Based on type of command response or notification,
1284 * handle those that need handling via function in
1285 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1286 if (priv->rx_handlers[pkt->hdr.cmd]) {
1287 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1288 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1289 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1290 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1292 /* No handling needed */
1294 "r %d i %d No handler needed for %s, 0x%02x\n",
1295 r, i, get_cmd_string(pkt->hdr.cmd),
1300 * XXX: After here, we should always check rxb->page
1301 * against NULL before touching it or its virtual
1302 * memory (pkt). Because some rx_handler might have
1303 * already taken or freed the pages.
1307 /* Invoke any callbacks, transfer the buffer to caller,
1308 * and fire off the (possibly) blocking iwl_send_cmd()
1309 * as we reclaim the driver command queue */
1311 iwl_tx_cmd_complete(priv, rxb);
1313 IWL_WARN(priv, "Claim null rxb?\n");
1316 /* Reuse the page if possible. For notification packets and
1317 * SKBs that fail to Rx correctly, add them back into the
1318 * rx_free list for reuse later. */
1319 spin_lock_irqsave(&rxq->lock, flags);
1320 if (rxb->page != NULL) {
1321 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1322 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1323 PCI_DMA_FROMDEVICE);
1324 list_add_tail(&rxb->list, &rxq->rx_free);
1327 list_add_tail(&rxb->list, &rxq->rx_used);
1329 spin_unlock_irqrestore(&rxq->lock, flags);
1331 i = (i + 1) & RX_QUEUE_MASK;
1332 /* If there are a lot of unused frames,
1333 * restock the Rx queue so ucode won't assert. */
1338 iwl3945_rx_replenish_now(priv);
1344 /* Backtrack one entry */
1347 iwl3945_rx_replenish_now(priv);
1349 iwl3945_rx_queue_restock(priv);
1352 /* call this function to flush any scheduled tasklet */
1353 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1355 /* wait to make sure we flush pending tasklet*/
1356 synchronize_irq(priv->pci_dev->irq);
1357 tasklet_kill(&priv->irq_tasklet);
1360 static const char *desc_lookup(int i)
1368 return "BAD_CHECKSUM";
1370 return "NMI_INTERRUPT";
1374 return "FATAL_ERROR";
1380 #define ERROR_START_OFFSET (1 * sizeof(u32))
1381 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1383 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1386 u32 desc, time, count, base, data1;
1387 u32 blink1, blink2, ilink1, ilink2;
1389 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1391 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1392 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1397 count = iwl_read_targ_mem(priv, base);
1399 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1400 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1401 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1402 priv->status, count);
1405 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1406 "ilink1 nmiPC Line\n");
1407 for (i = ERROR_START_OFFSET;
1408 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1409 i += ERROR_ELEM_SIZE) {
1410 desc = iwl_read_targ_mem(priv, base + i);
1412 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1414 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1416 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1418 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1420 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1422 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1425 "%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1426 desc_lookup(desc), desc, time, blink1, blink2,
1427 ilink1, ilink2, data1);
1428 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1429 0, blink1, blink2, ilink1, ilink2);
1433 #define EVENT_START_OFFSET (6 * sizeof(u32))
1436 * iwl3945_print_event_log - Dump error event log to syslog
1439 static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1440 u32 num_events, u32 mode,
1441 int pos, char **buf, size_t bufsz)
1444 u32 base; /* SRAM byte address of event log header */
1445 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1446 u32 ptr; /* SRAM byte address of log data */
1447 u32 ev, time, data; /* event log data */
1448 unsigned long reg_flags;
1450 if (num_events == 0)
1453 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1456 event_size = 2 * sizeof(u32);
1458 event_size = 3 * sizeof(u32);
1460 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1462 /* Make sure device is powered up for SRAM reads */
1463 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1464 iwl_grab_nic_access(priv);
1466 /* Set starting address; reads will auto-increment */
1467 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1470 /* "time" is actually "data" for mode 0 (no timestamp).
1471 * place event id # at far right for easier visual parsing. */
1472 for (i = 0; i < num_events; i++) {
1473 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1474 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1478 pos += scnprintf(*buf + pos, bufsz - pos,
1482 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1483 trace_iwlwifi_dev_ucode_event(priv, 0,
1487 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1489 pos += scnprintf(*buf + pos, bufsz - pos,
1490 "%010u:0x%08x:%04u\n",
1493 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
1495 trace_iwlwifi_dev_ucode_event(priv, time,
1501 /* Allow device to power down */
1502 iwl_release_nic_access(priv);
1503 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1508 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1510 static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1511 u32 num_wraps, u32 next_entry,
1513 int pos, char **buf, size_t bufsz)
1516 * display the newest DEFAULT_LOG_ENTRIES entries
1517 * i.e the entries just before the next ont that uCode would fill.
1520 if (next_entry < size) {
1521 pos = iwl3945_print_event_log(priv,
1522 capacity - (size - next_entry),
1523 size - next_entry, mode,
1525 pos = iwl3945_print_event_log(priv, 0,
1529 pos = iwl3945_print_event_log(priv, next_entry - size,
1533 if (next_entry < size)
1534 pos = iwl3945_print_event_log(priv, 0,
1538 pos = iwl3945_print_event_log(priv, next_entry - size,
1545 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1547 int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1548 char **buf, bool display)
1550 u32 base; /* SRAM byte address of event log header */
1551 u32 capacity; /* event log capacity in # entries */
1552 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1553 u32 num_wraps; /* # times uCode wrapped to top of log */
1554 u32 next_entry; /* index of next entry to be written by uCode */
1555 u32 size; /* # entries that we'll print */
1559 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1560 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1561 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1565 /* event log header */
1566 capacity = iwl_read_targ_mem(priv, base);
1567 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1568 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1569 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1571 if (capacity > priv->cfg->max_event_log_size) {
1572 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1573 capacity, priv->cfg->max_event_log_size);
1574 capacity = priv->cfg->max_event_log_size;
1577 if (next_entry > priv->cfg->max_event_log_size) {
1578 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1579 next_entry, priv->cfg->max_event_log_size);
1580 next_entry = priv->cfg->max_event_log_size;
1583 size = num_wraps ? capacity : next_entry;
1585 /* bail out if nothing in log */
1587 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1591 #ifdef CONFIG_IWLWIFI_DEBUG
1592 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1593 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1594 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1596 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1597 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1600 IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1603 #ifdef CONFIG_IWLWIFI_DEBUG
1606 bufsz = capacity * 48;
1609 *buf = kmalloc(bufsz, GFP_KERNEL);
1613 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1614 /* if uCode has wrapped back to top of log,
1615 * start at the oldest entry,
1616 * i.e the next one that uCode would fill.
1619 pos = iwl3945_print_event_log(priv, next_entry,
1620 capacity - next_entry, mode,
1623 /* (then/else) start at top of log */
1624 pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
1627 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1628 next_entry, size, mode,
1631 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1632 next_entry, size, mode,
1638 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1640 u32 inta, handled = 0;
1642 unsigned long flags;
1643 #ifdef CONFIG_IWLWIFI_DEBUG
1647 spin_lock_irqsave(&priv->lock, flags);
1649 /* Ack/clear/reset pending uCode interrupts.
1650 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1651 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1652 inta = iwl_read32(priv, CSR_INT);
1653 iwl_write32(priv, CSR_INT, inta);
1655 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1656 * Any new interrupts that happen after this, either while we're
1657 * in this tasklet, or later, will show up in next ISR/tasklet. */
1658 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1659 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1661 #ifdef CONFIG_IWLWIFI_DEBUG
1662 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1663 /* just for debug */
1664 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1665 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1666 inta, inta_mask, inta_fh);
1670 spin_unlock_irqrestore(&priv->lock, flags);
1672 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1673 * atomic, make sure that inta covers all the interrupts that
1674 * we've discovered, even if FH interrupt came in just after
1675 * reading CSR_INT. */
1676 if (inta_fh & CSR39_FH_INT_RX_MASK)
1677 inta |= CSR_INT_BIT_FH_RX;
1678 if (inta_fh & CSR39_FH_INT_TX_MASK)
1679 inta |= CSR_INT_BIT_FH_TX;
1681 /* Now service all interrupt bits discovered above. */
1682 if (inta & CSR_INT_BIT_HW_ERR) {
1683 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1685 /* Tell the device to stop sending interrupts */
1686 iwl_disable_interrupts(priv);
1688 priv->isr_stats.hw++;
1689 iwl_irq_handle_error(priv);
1691 handled |= CSR_INT_BIT_HW_ERR;
1696 #ifdef CONFIG_IWLWIFI_DEBUG
1697 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1698 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1699 if (inta & CSR_INT_BIT_SCD) {
1700 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1701 "the frame/frames.\n");
1702 priv->isr_stats.sch++;
1705 /* Alive notification via Rx interrupt will do the real work */
1706 if (inta & CSR_INT_BIT_ALIVE) {
1707 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1708 priv->isr_stats.alive++;
1712 /* Safely ignore these bits for debug checks below */
1713 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1715 /* Error detected by uCode */
1716 if (inta & CSR_INT_BIT_SW_ERR) {
1717 IWL_ERR(priv, "Microcode SW error detected. "
1718 "Restarting 0x%X.\n", inta);
1719 priv->isr_stats.sw++;
1720 priv->isr_stats.sw_err = inta;
1721 iwl_irq_handle_error(priv);
1722 handled |= CSR_INT_BIT_SW_ERR;
1725 /* uCode wakes up after power-down sleep */
1726 if (inta & CSR_INT_BIT_WAKEUP) {
1727 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1728 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1729 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1730 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1731 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1732 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1733 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1734 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1736 priv->isr_stats.wakeup++;
1737 handled |= CSR_INT_BIT_WAKEUP;
1740 /* All uCode command responses, including Tx command responses,
1741 * Rx "responses" (frame-received notification), and other
1742 * notifications from uCode come through here*/
1743 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1744 iwl3945_rx_handle(priv);
1745 priv->isr_stats.rx++;
1746 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1749 if (inta & CSR_INT_BIT_FH_TX) {
1750 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1751 priv->isr_stats.tx++;
1753 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1754 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1755 (FH39_SRVC_CHNL), 0x0);
1756 handled |= CSR_INT_BIT_FH_TX;
1759 if (inta & ~handled) {
1760 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1761 priv->isr_stats.unhandled++;
1764 if (inta & ~priv->inta_mask) {
1765 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1766 inta & ~priv->inta_mask);
1767 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1770 /* Re-enable all interrupts */
1771 /* only Re-enable if disabled by irq */
1772 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1773 iwl_enable_interrupts(priv);
1775 #ifdef CONFIG_IWLWIFI_DEBUG
1776 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1777 inta = iwl_read32(priv, CSR_INT);
1778 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1779 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1780 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1781 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1786 static int iwl3945_get_single_channel_for_scan(struct iwl_priv *priv,
1787 struct ieee80211_vif *vif,
1788 enum ieee80211_band band,
1789 struct iwl3945_scan_channel *scan_ch)
1791 const struct ieee80211_supported_band *sband;
1792 u16 passive_dwell = 0;
1793 u16 active_dwell = 0;
1797 sband = iwl_get_hw_mode(priv, band);
1799 IWL_ERR(priv, "invalid band\n");
1803 active_dwell = iwl_get_active_dwell_time(priv, band, 0);
1804 passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
1806 if (passive_dwell <= active_dwell)
1807 passive_dwell = active_dwell + 1;
1810 channel = iwl_get_single_channel_number(priv, band);
1813 scan_ch->channel = channel;
1814 scan_ch->type = 0; /* passive */
1815 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1816 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1817 /* Set txpower levels to defaults */
1818 scan_ch->tpc.dsp_atten = 110;
1819 if (band == IEEE80211_BAND_5GHZ)
1820 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1822 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1825 IWL_ERR(priv, "no valid channel found\n");
1829 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1830 enum ieee80211_band band,
1831 u8 is_active, u8 n_probes,
1832 struct iwl3945_scan_channel *scan_ch,
1833 struct ieee80211_vif *vif)
1835 struct ieee80211_channel *chan;
1836 const struct ieee80211_supported_band *sband;
1837 const struct iwl_channel_info *ch_info;
1838 u16 passive_dwell = 0;
1839 u16 active_dwell = 0;
1842 sband = iwl_get_hw_mode(priv, band);
1846 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1847 passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
1849 if (passive_dwell <= active_dwell)
1850 passive_dwell = active_dwell + 1;
1852 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1853 chan = priv->scan_request->channels[i];
1855 if (chan->band != band)
1858 scan_ch->channel = chan->hw_value;
1860 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1861 if (!is_channel_valid(ch_info)) {
1862 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1867 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1868 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1869 /* If passive , set up for auto-switch
1870 * and use long active_dwell time.
1872 if (!is_active || is_channel_passive(ch_info) ||
1873 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1874 scan_ch->type = 0; /* passive */
1875 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1876 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1878 scan_ch->type = 1; /* active */
1881 /* Set direct probe bits. These may be used both for active
1882 * scan channels (probes gets sent right away),
1883 * or for passive channels (probes get se sent only after
1884 * hearing clear Rx packet).*/
1885 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1887 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1889 /* uCode v1 does not allow setting direct probe bits on
1890 * passive channel. */
1891 if ((scan_ch->type & 1) && n_probes)
1892 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1895 /* Set txpower levels to defaults */
1896 scan_ch->tpc.dsp_atten = 110;
1897 /* scan_pwr_info->tpc.dsp_atten; */
1899 /*scan_pwr_info->tpc.tx_gain; */
1900 if (band == IEEE80211_BAND_5GHZ)
1901 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1903 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1904 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1906 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1910 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1912 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1913 (scan_ch->type & 1) ?
1914 active_dwell : passive_dwell);
1920 IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added);
1924 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1925 struct ieee80211_rate *rates)
1929 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1930 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1931 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1932 rates[i].hw_value_short = i;
1934 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1936 * If CCK != 1M then set short preamble rate flag.
1938 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1939 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1944 /******************************************************************************
1946 * uCode download functions
1948 ******************************************************************************/
1950 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1952 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1953 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1954 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1955 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1956 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1957 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1961 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1962 * looking at all data.
1964 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1971 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1973 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1974 IWL39_RTC_INST_LOWER_BOUND);
1977 for (; len > 0; len -= sizeof(u32), image++) {
1978 /* read data comes through single port, auto-incr addr */
1979 /* NOTE: Use the debugless read so we don't flood kernel log
1980 * if IWL_DL_IO is set */
1981 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1982 if (val != le32_to_cpu(*image)) {
1983 IWL_ERR(priv, "uCode INST section is invalid at "
1984 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1985 save_len - len, val, le32_to_cpu(*image));
1995 IWL_DEBUG_INFO(priv,
1996 "ucode image in INSTRUCTION memory is good\n");
2003 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2004 * using sample data 100 bytes apart. If these sample points are good,
2005 * it's a pretty good bet that everything between them is good, too.
2007 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2014 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2016 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2017 /* read data comes through single port, auto-incr addr */
2018 /* NOTE: Use the debugless read so we don't flood kernel log
2019 * if IWL_DL_IO is set */
2020 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2021 i + IWL39_RTC_INST_LOWER_BOUND);
2022 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2023 if (val != le32_to_cpu(*image)) {
2024 #if 0 /* Enable this if you want to see details */
2025 IWL_ERR(priv, "uCode INST section is invalid at "
2026 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2041 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2042 * and verify its contents
2044 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2051 image = (__le32 *)priv->ucode_boot.v_addr;
2052 len = priv->ucode_boot.len;
2053 rc = iwl3945_verify_inst_sparse(priv, image, len);
2055 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2059 /* Try initialize */
2060 image = (__le32 *)priv->ucode_init.v_addr;
2061 len = priv->ucode_init.len;
2062 rc = iwl3945_verify_inst_sparse(priv, image, len);
2064 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2068 /* Try runtime/protocol */
2069 image = (__le32 *)priv->ucode_code.v_addr;
2070 len = priv->ucode_code.len;
2071 rc = iwl3945_verify_inst_sparse(priv, image, len);
2073 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2077 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2079 /* Since nothing seems to match, show first several data entries in
2080 * instruction SRAM, so maybe visual inspection will give a clue.
2081 * Selection of bootstrap image (vs. other images) is arbitrary. */
2082 image = (__le32 *)priv->ucode_boot.v_addr;
2083 len = priv->ucode_boot.len;
2084 rc = iwl3945_verify_inst_full(priv, image, len);
2089 static void iwl3945_nic_start(struct iwl_priv *priv)
2091 /* Remove all resets to allow NIC to operate */
2092 iwl_write32(priv, CSR_RESET, 0);
2095 #define IWL3945_UCODE_GET(item) \
2096 static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode)\
2098 return le32_to_cpu(ucode->u.v1.item); \
2101 static u32 iwl3945_ucode_get_header_size(u32 api_ver)
2106 static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode)
2108 return (u8 *) ucode->u.v1.data;
2111 IWL3945_UCODE_GET(inst_size);
2112 IWL3945_UCODE_GET(data_size);
2113 IWL3945_UCODE_GET(init_size);
2114 IWL3945_UCODE_GET(init_data_size);
2115 IWL3945_UCODE_GET(boot_size);
2118 * iwl3945_read_ucode - Read uCode images from disk file.
2120 * Copy into buffers for card to fetch via bus-mastering
2122 static int iwl3945_read_ucode(struct iwl_priv *priv)
2124 const struct iwl_ucode_header *ucode;
2125 int ret = -EINVAL, index;
2126 const struct firmware *ucode_raw;
2127 /* firmware file name contains uCode/driver compatibility version */
2128 const char *name_pre = priv->cfg->fw_name_pre;
2129 const unsigned int api_max = priv->cfg->ucode_api_max;
2130 const unsigned int api_min = priv->cfg->ucode_api_min;
2134 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2136 /* Ask kernel firmware_class module to get the boot firmware off disk.
2137 * request_firmware() is synchronous, file is in memory on return. */
2138 for (index = api_max; index >= api_min; index--) {
2139 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2140 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2142 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2149 if (index < api_max)
2150 IWL_ERR(priv, "Loaded firmware %s, "
2151 "which is deprecated. "
2152 " Please use API v%u instead.\n",
2154 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2155 "(%zd bytes) from disk\n",
2156 buf, ucode_raw->size);
2164 /* Make sure that we got at least our header! */
2165 if (ucode_raw->size < iwl3945_ucode_get_header_size(1)) {
2166 IWL_ERR(priv, "File size way too small!\n");
2171 /* Data from ucode file: header followed by uCode images */
2172 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2174 priv->ucode_ver = le32_to_cpu(ucode->ver);
2175 api_ver = IWL_UCODE_API(priv->ucode_ver);
2176 inst_size = iwl3945_ucode_get_inst_size(ucode);
2177 data_size = iwl3945_ucode_get_data_size(ucode);
2178 init_size = iwl3945_ucode_get_init_size(ucode);
2179 init_data_size = iwl3945_ucode_get_init_data_size(ucode);
2180 boot_size = iwl3945_ucode_get_boot_size(ucode);
2181 src = iwl3945_ucode_get_data(ucode);
2183 /* api_ver should match the api version forming part of the
2184 * firmware filename ... but we don't check for that and only rely
2185 * on the API version read from firmware header from here on forward */
2187 if (api_ver < api_min || api_ver > api_max) {
2188 IWL_ERR(priv, "Driver unable to support your firmware API. "
2189 "Driver supports v%u, firmware is v%u.\n",
2191 priv->ucode_ver = 0;
2195 if (api_ver != api_max)
2196 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2197 "got %u. New firmware can be obtained "
2198 "from http://www.intellinuxwireless.org.\n",
2201 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2202 IWL_UCODE_MAJOR(priv->ucode_ver),
2203 IWL_UCODE_MINOR(priv->ucode_ver),
2204 IWL_UCODE_API(priv->ucode_ver),
2205 IWL_UCODE_SERIAL(priv->ucode_ver));
2207 snprintf(priv->hw->wiphy->fw_version,
2208 sizeof(priv->hw->wiphy->fw_version),
2210 IWL_UCODE_MAJOR(priv->ucode_ver),
2211 IWL_UCODE_MINOR(priv->ucode_ver),
2212 IWL_UCODE_API(priv->ucode_ver),
2213 IWL_UCODE_SERIAL(priv->ucode_ver));
2215 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2217 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2219 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2221 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2223 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2225 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2229 /* Verify size of file vs. image size info in file's header */
2230 if (ucode_raw->size != iwl3945_ucode_get_header_size(api_ver) +
2231 inst_size + data_size + init_size +
2232 init_data_size + boot_size) {
2234 IWL_DEBUG_INFO(priv,
2235 "uCode file size %zd does not match expected size\n",
2241 /* Verify that uCode images will fit in card's SRAM */
2242 if (inst_size > IWL39_MAX_INST_SIZE) {
2243 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2249 if (data_size > IWL39_MAX_DATA_SIZE) {
2250 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2255 if (init_size > IWL39_MAX_INST_SIZE) {
2256 IWL_DEBUG_INFO(priv,
2257 "uCode init instr len %d too large to fit in\n",
2262 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2263 IWL_DEBUG_INFO(priv,
2264 "uCode init data len %d too large to fit in\n",
2269 if (boot_size > IWL39_MAX_BSM_SIZE) {
2270 IWL_DEBUG_INFO(priv,
2271 "uCode boot instr len %d too large to fit in\n",
2277 /* Allocate ucode buffers for card's bus-master loading ... */
2279 /* Runtime instructions and 2 copies of data:
2280 * 1) unmodified from disk
2281 * 2) backup cache for save/restore during power-downs */
2282 priv->ucode_code.len = inst_size;
2283 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2285 priv->ucode_data.len = data_size;
2286 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2288 priv->ucode_data_backup.len = data_size;
2289 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2291 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2292 !priv->ucode_data_backup.v_addr)
2295 /* Initialization instructions and data */
2296 if (init_size && init_data_size) {
2297 priv->ucode_init.len = init_size;
2298 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2300 priv->ucode_init_data.len = init_data_size;
2301 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2303 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2307 /* Bootstrap (instructions only, no data) */
2309 priv->ucode_boot.len = boot_size;
2310 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2312 if (!priv->ucode_boot.v_addr)
2316 /* Copy images into buffers for card's bus-master reads ... */
2318 /* Runtime instructions (first block of data in file) */
2320 IWL_DEBUG_INFO(priv,
2321 "Copying (but not loading) uCode instr len %zd\n", len);
2322 memcpy(priv->ucode_code.v_addr, src, len);
2325 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2326 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2328 /* Runtime data (2nd block)
2329 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2331 IWL_DEBUG_INFO(priv,
2332 "Copying (but not loading) uCode data len %zd\n", len);
2333 memcpy(priv->ucode_data.v_addr, src, len);
2334 memcpy(priv->ucode_data_backup.v_addr, src, len);
2337 /* Initialization instructions (3rd block) */
2340 IWL_DEBUG_INFO(priv,
2341 "Copying (but not loading) init instr len %zd\n", len);
2342 memcpy(priv->ucode_init.v_addr, src, len);
2346 /* Initialization data (4th block) */
2347 if (init_data_size) {
2348 len = init_data_size;
2349 IWL_DEBUG_INFO(priv,
2350 "Copying (but not loading) init data len %zd\n", len);
2351 memcpy(priv->ucode_init_data.v_addr, src, len);
2355 /* Bootstrap instructions (5th block) */
2357 IWL_DEBUG_INFO(priv,
2358 "Copying (but not loading) boot instr len %zd\n", len);
2359 memcpy(priv->ucode_boot.v_addr, src, len);
2361 /* We have our copies now, allow OS release its copies */
2362 release_firmware(ucode_raw);
2366 IWL_ERR(priv, "failed to allocate pci memory\n");
2368 iwl3945_dealloc_ucode_pci(priv);
2371 release_firmware(ucode_raw);
2379 * iwl3945_set_ucode_ptrs - Set uCode address location
2381 * Tell initialization uCode where to find runtime uCode.
2383 * BSM registers initially contain pointers to initialization uCode.
2384 * We need to replace them to load runtime uCode inst and data,
2385 * and to save runtime data when powering down.
2387 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2392 /* bits 31:0 for 3945 */
2393 pinst = priv->ucode_code.p_addr;
2394 pdata = priv->ucode_data_backup.p_addr;
2396 /* Tell bootstrap uCode where to find image to load */
2397 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2398 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2399 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2400 priv->ucode_data.len);
2402 /* Inst byte count must be last to set up, bit 31 signals uCode
2403 * that all new ptr/size info is in place */
2404 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2405 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2407 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2413 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2415 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2417 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2419 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2421 /* Check alive response for "valid" sign from uCode */
2422 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2423 /* We had an error bringing up the hardware, so take it
2424 * all the way back down so we can try again */
2425 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2429 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2430 * This is a paranoid check, because we would not have gotten the
2431 * "initialize" alive if code weren't properly loaded. */
2432 if (iwl3945_verify_ucode(priv)) {
2433 /* Runtime instruction load was bad;
2434 * take it all the way back down so we can try again */
2435 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2439 /* Send pointers to protocol/runtime uCode image ... init code will
2440 * load and launch runtime uCode, which will send us another "Alive"
2442 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2443 if (iwl3945_set_ucode_ptrs(priv)) {
2444 /* Runtime instruction load won't happen;
2445 * take it all the way back down so we can try again */
2446 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2452 queue_work(priv->workqueue, &priv->restart);
2456 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2457 * from protocol/runtime uCode (initialization uCode's
2458 * Alive gets handled by iwl3945_init_alive_start()).
2460 static void iwl3945_alive_start(struct iwl_priv *priv)
2462 int thermal_spin = 0;
2465 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2467 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2468 /* We had an error bringing up the hardware, so take it
2469 * all the way back down so we can try again */
2470 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2474 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2475 * This is a paranoid check, because we would not have gotten the
2476 * "runtime" alive if code weren't properly loaded. */
2477 if (iwl3945_verify_ucode(priv)) {
2478 /* Runtime instruction load was bad;
2479 * take it all the way back down so we can try again */
2480 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2484 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2485 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2488 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2489 /* if RFKILL is not on, then wait for thermal
2490 * sensor in adapter to kick in */
2491 while (iwl3945_hw_get_temperature(priv) == 0) {
2497 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2500 set_bit(STATUS_RF_KILL_HW, &priv->status);
2502 /* After the ALIVE response, we can send commands to 3945 uCode */
2503 set_bit(STATUS_ALIVE, &priv->status);
2505 if (priv->cfg->ops->lib->recover_from_tx_stall) {
2506 /* Enable timer to monitor the driver queues */
2507 mod_timer(&priv->monitor_recover,
2509 msecs_to_jiffies(priv->cfg->monitor_recover_period));
2512 if (iwl_is_rfkill(priv))
2515 ieee80211_wake_queues(priv->hw);
2517 priv->active_rate = IWL_RATES_MASK;
2519 iwl_power_update_mode(priv, true);
2521 if (iwl_is_associated(priv)) {
2522 struct iwl3945_rxon_cmd *active_rxon =
2523 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2525 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2526 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2528 /* Initialize our rx_config data */
2529 iwl_connection_init_rx_config(priv, NULL);
2532 /* Configure Bluetooth device coexistence support */
2533 priv->cfg->ops->hcmd->send_bt_config(priv);
2535 /* Configure the adapter for unassociated operation */
2536 iwlcore_commit_rxon(priv);
2538 iwl3945_reg_txpower_periodic(priv);
2540 iwl_leds_init(priv);
2542 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2543 set_bit(STATUS_READY, &priv->status);
2544 wake_up_interruptible(&priv->wait_command_queue);
2549 queue_work(priv->workqueue, &priv->restart);
2552 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2554 static void __iwl3945_down(struct iwl_priv *priv)
2556 unsigned long flags;
2557 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2558 struct ieee80211_conf *conf = NULL;
2560 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2562 conf = ieee80211_get_hw_conf(priv->hw);
2565 set_bit(STATUS_EXIT_PENDING, &priv->status);
2567 /* Station information will now be cleared in device */
2568 iwl_clear_ucode_stations(priv);
2569 iwl_dealloc_bcast_station(priv);
2570 iwl_clear_driver_stations(priv);
2572 /* Unblock any waiting calls */
2573 wake_up_interruptible_all(&priv->wait_command_queue);
2575 /* Wipe out the EXIT_PENDING status bit if we are not actually
2576 * exiting the module */
2578 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2580 /* stop and reset the on-board processor */
2581 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2583 /* tell the device to stop sending interrupts */
2584 spin_lock_irqsave(&priv->lock, flags);
2585 iwl_disable_interrupts(priv);
2586 spin_unlock_irqrestore(&priv->lock, flags);
2587 iwl_synchronize_irq(priv);
2589 if (priv->mac80211_registered)
2590 ieee80211_stop_queues(priv->hw);
2592 /* If we have not previously called iwl3945_init() then
2593 * clear all bits but the RF Kill bits and return */
2594 if (!iwl_is_init(priv)) {
2595 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2597 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2598 STATUS_GEO_CONFIGURED |
2599 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2600 STATUS_EXIT_PENDING;
2604 /* ...otherwise clear out all the status bits but the RF Kill
2605 * bit and continue taking the NIC down. */
2606 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2608 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2609 STATUS_GEO_CONFIGURED |
2610 test_bit(STATUS_FW_ERROR, &priv->status) <<
2612 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2613 STATUS_EXIT_PENDING;
2615 iwl3945_hw_txq_ctx_stop(priv);
2616 iwl3945_hw_rxq_stop(priv);
2618 /* Power-down device's busmaster DMA clocks */
2619 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2622 /* Stop the device, and put it in low power state */
2623 priv->cfg->ops->lib->apm_ops.stop(priv);
2626 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2628 if (priv->ibss_beacon)
2629 dev_kfree_skb(priv->ibss_beacon);
2630 priv->ibss_beacon = NULL;
2632 /* clear out any free frames */
2633 iwl3945_clear_free_frames(priv);
2636 static void iwl3945_down(struct iwl_priv *priv)
2638 mutex_lock(&priv->mutex);
2639 __iwl3945_down(priv);
2640 mutex_unlock(&priv->mutex);
2642 iwl3945_cancel_deferred_work(priv);
2645 #define MAX_HW_RESTARTS 5
2647 static int __iwl3945_up(struct iwl_priv *priv)
2651 rc = iwl_alloc_bcast_station(priv, false);
2655 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2656 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2660 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2661 IWL_ERR(priv, "ucode not available for device bring up\n");
2665 /* If platform's RF_KILL switch is NOT set to KILL */
2666 if (iwl_read32(priv, CSR_GP_CNTRL) &
2667 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2668 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2670 set_bit(STATUS_RF_KILL_HW, &priv->status);
2671 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2675 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2677 rc = iwl3945_hw_nic_init(priv);
2679 IWL_ERR(priv, "Unable to int nic\n");
2683 /* make sure rfkill handshake bits are cleared */
2684 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2685 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2686 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2688 /* clear (again), then enable host interrupts */
2689 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2690 iwl_enable_interrupts(priv);
2692 /* really make sure rfkill handshake bits are cleared */
2693 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2694 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2696 /* Copy original ucode data image from disk into backup cache.
2697 * This will be used to initialize the on-board processor's
2698 * data SRAM for a clean start when the runtime program first loads. */
2699 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2700 priv->ucode_data.len);
2702 /* We return success when we resume from suspend and rf_kill is on. */
2703 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2706 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2708 /* load bootstrap state machine,
2709 * load bootstrap program into processor's memory,
2710 * prepare to load the "initialize" uCode */
2711 rc = priv->cfg->ops->lib->load_ucode(priv);
2715 "Unable to set up bootstrap uCode: %d\n", rc);
2719 /* start card; "initialize" will load runtime ucode */
2720 iwl3945_nic_start(priv);
2722 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2727 set_bit(STATUS_EXIT_PENDING, &priv->status);
2728 __iwl3945_down(priv);
2729 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2731 /* tried to restart and config the device for as long as our
2732 * patience could withstand */
2733 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2738 /*****************************************************************************
2740 * Workqueue callbacks
2742 *****************************************************************************/
2744 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2746 struct iwl_priv *priv =
2747 container_of(data, struct iwl_priv, init_alive_start.work);
2749 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2752 mutex_lock(&priv->mutex);
2753 iwl3945_init_alive_start(priv);
2754 mutex_unlock(&priv->mutex);
2757 static void iwl3945_bg_alive_start(struct work_struct *data)
2759 struct iwl_priv *priv =
2760 container_of(data, struct iwl_priv, alive_start.work);
2762 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2765 mutex_lock(&priv->mutex);
2766 iwl3945_alive_start(priv);
2767 mutex_unlock(&priv->mutex);
2771 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2772 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2773 * *is* readable even when device has been SW_RESET into low power mode
2774 * (e.g. during RF KILL).
2776 static void iwl3945_rfkill_poll(struct work_struct *data)
2778 struct iwl_priv *priv =
2779 container_of(data, struct iwl_priv, _3945.rfkill_poll.work);
2780 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2781 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2782 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2784 if (new_rfkill != old_rfkill) {
2786 set_bit(STATUS_RF_KILL_HW, &priv->status);
2788 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2790 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2792 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2793 new_rfkill ? "disable radio" : "enable radio");
2796 /* Keep this running, even if radio now enabled. This will be
2797 * cancelled in mac_start() if system decides to start again */
2798 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
2799 round_jiffies_relative(2 * HZ));
2803 void iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
2805 struct iwl_host_cmd cmd = {
2806 .id = REPLY_SCAN_CMD,
2807 .len = sizeof(struct iwl3945_scan_cmd),
2808 .flags = CMD_SIZE_HUGE,
2810 struct iwl3945_scan_cmd *scan;
2811 struct ieee80211_conf *conf = NULL;
2813 enum ieee80211_band band;
2814 bool is_active = false;
2816 conf = ieee80211_get_hw_conf(priv->hw);
2818 cancel_delayed_work(&priv->scan_check);
2820 if (!iwl_is_ready(priv)) {
2821 IWL_WARN(priv, "request scan called when driver not ready.\n");
2825 /* Make sure the scan wasn't canceled before this queued work
2826 * was given the chance to run... */
2827 if (!test_bit(STATUS_SCANNING, &priv->status))
2830 /* This should never be called or scheduled if there is currently
2831 * a scan active in the hardware. */
2832 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2833 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2834 "Ignoring second request.\n");
2838 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2839 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2843 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2845 "Scan request while abort pending. Queuing.\n");
2849 if (iwl_is_rfkill(priv)) {
2850 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2854 if (!test_bit(STATUS_READY, &priv->status)) {
2856 "Scan request while uninitialized. Queuing.\n");
2860 if (!priv->scan_cmd) {
2861 priv->scan_cmd = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2862 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2863 if (!priv->scan_cmd) {
2864 IWL_DEBUG_SCAN(priv, "Fail to allocate scan memory\n");
2868 scan = priv->scan_cmd;
2869 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2871 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2872 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2874 if (iwl_is_associated(priv)) {
2877 u32 suspend_time = 100;
2878 u32 scan_suspend_time = 100;
2879 unsigned long flags;
2881 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2883 spin_lock_irqsave(&priv->lock, flags);
2884 if (priv->is_internal_short_scan)
2887 interval = vif->bss_conf.beacon_int;
2888 spin_unlock_irqrestore(&priv->lock, flags);
2890 scan->suspend_time = 0;
2891 scan->max_out_time = cpu_to_le32(200 * 1024);
2893 interval = suspend_time;
2895 * suspend time format:
2896 * 0-19: beacon interval in usec (time before exec.)
2898 * 24-31: number of beacons (suspend between channels)
2901 extra = (suspend_time / interval) << 24;
2902 scan_suspend_time = 0xFF0FFFFF &
2903 (extra | ((suspend_time % interval) * 1024));
2905 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2906 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2907 scan_suspend_time, interval);
2910 if (priv->is_internal_short_scan) {
2911 IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
2912 } else if (priv->scan_request->n_ssids) {
2914 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2915 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2916 /* always does wildcard anyway */
2917 if (!priv->scan_request->ssids[i].ssid_len)
2919 scan->direct_scan[p].id = WLAN_EID_SSID;
2920 scan->direct_scan[p].len =
2921 priv->scan_request->ssids[i].ssid_len;
2922 memcpy(scan->direct_scan[p].ssid,
2923 priv->scan_request->ssids[i].ssid,
2924 priv->scan_request->ssids[i].ssid_len);
2930 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2932 /* We don't build a direct scan probe request; the uCode will do
2933 * that based on the direct_mask added to each channel entry */
2934 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2935 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2936 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2938 /* flags + rate selection */
2940 switch (priv->scan_band) {
2941 case IEEE80211_BAND_2GHZ:
2942 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2943 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2944 scan->good_CRC_th = 0;
2945 band = IEEE80211_BAND_2GHZ;
2947 case IEEE80211_BAND_5GHZ:
2948 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2950 * If active scaning is requested but a certain channel
2951 * is marked passive, we can do active scanning if we
2952 * detect transmissions.
2954 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
2955 IWL_GOOD_CRC_TH_DISABLED;
2956 band = IEEE80211_BAND_5GHZ;
2959 IWL_WARN(priv, "Invalid scan band\n");
2963 if (!priv->is_internal_short_scan) {
2964 scan->tx_cmd.len = cpu_to_le16(
2965 iwl_fill_probe_req(priv,
2966 (struct ieee80211_mgmt *)scan->data,
2968 priv->scan_request->ie,
2969 priv->scan_request->ie_len,
2970 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2972 /* use bcast addr, will not be transmitted but must be valid */
2973 scan->tx_cmd.len = cpu_to_le16(
2974 iwl_fill_probe_req(priv,
2975 (struct ieee80211_mgmt *)scan->data,
2976 iwl_bcast_addr, NULL, 0,
2977 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2979 /* select Rx antennas */
2980 scan->flags |= iwl3945_get_antenna_flags(priv);
2982 if (priv->is_internal_short_scan) {
2983 scan->channel_count =
2984 iwl3945_get_single_channel_for_scan(priv, vif, band,
2985 (void *)&scan->data[le16_to_cpu(
2986 scan->tx_cmd.len)]);
2988 scan->channel_count =
2989 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2990 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)], vif);
2993 if (scan->channel_count == 0) {
2994 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2998 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2999 scan->channel_count * sizeof(struct iwl3945_scan_channel);
3001 scan->len = cpu_to_le16(cmd.len);
3003 set_bit(STATUS_SCAN_HW, &priv->status);
3004 if (iwl_send_cmd_sync(priv, &cmd))
3007 queue_delayed_work(priv->workqueue, &priv->scan_check,
3008 IWL_SCAN_CHECK_WATCHDOG);
3013 /* can not perform scan make sure we clear scanning
3014 * bits from status so next scan request can be performed.
3015 * if we dont clear scanning status bit here all next scan
3018 clear_bit(STATUS_SCAN_HW, &priv->status);
3019 clear_bit(STATUS_SCANNING, &priv->status);
3021 /* inform mac80211 scan aborted */
3022 queue_work(priv->workqueue, &priv->scan_completed);
3025 static void iwl3945_bg_restart(struct work_struct *data)
3027 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3029 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3032 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3033 mutex_lock(&priv->mutex);
3036 mutex_unlock(&priv->mutex);
3038 ieee80211_restart_hw(priv->hw);
3042 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3045 mutex_lock(&priv->mutex);
3047 mutex_unlock(&priv->mutex);
3051 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3053 struct iwl_priv *priv =
3054 container_of(data, struct iwl_priv, rx_replenish);
3056 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3059 mutex_lock(&priv->mutex);
3060 iwl3945_rx_replenish(priv);
3061 mutex_unlock(&priv->mutex);
3064 void iwl3945_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
3067 struct ieee80211_conf *conf = NULL;
3069 if (!vif || !priv->is_open)
3072 if (vif->type == NL80211_IFTYPE_AP) {
3073 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3077 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3078 vif->bss_conf.aid, priv->active_rxon.bssid_addr);
3080 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3083 iwl_scan_cancel_timeout(priv, 200);
3085 conf = ieee80211_get_hw_conf(priv->hw);
3087 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3088 iwlcore_commit_rxon(priv);
3090 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3091 iwl_setup_rxon_timing(priv, vif);
3092 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3093 sizeof(priv->rxon_timing), &priv->rxon_timing);
3095 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3096 "Attempting to continue.\n");
3098 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3100 priv->staging_rxon.assoc_id = cpu_to_le16(vif->bss_conf.aid);
3102 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3103 vif->bss_conf.aid, vif->bss_conf.beacon_int);
3105 if (vif->bss_conf.use_short_preamble)
3106 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3108 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3110 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3111 if (vif->bss_conf.use_short_slot)
3112 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3114 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3117 iwlcore_commit_rxon(priv);
3119 switch (vif->type) {
3120 case NL80211_IFTYPE_STATION:
3121 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3123 case NL80211_IFTYPE_ADHOC:
3124 iwl3945_send_beacon_cmd(priv);
3127 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3128 __func__, vif->type);
3133 /*****************************************************************************
3135 * mac80211 entry point functions
3137 *****************************************************************************/
3139 #define UCODE_READY_TIMEOUT (2 * HZ)
3141 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3143 struct iwl_priv *priv = hw->priv;
3146 IWL_DEBUG_MAC80211(priv, "enter\n");
3148 /* we should be verifying the device is ready to be opened */
3149 mutex_lock(&priv->mutex);
3151 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3152 * ucode filename and max sizes are card-specific. */
3154 if (!priv->ucode_code.len) {
3155 ret = iwl3945_read_ucode(priv);
3157 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3158 mutex_unlock(&priv->mutex);
3159 goto out_release_irq;
3163 ret = __iwl3945_up(priv);
3165 mutex_unlock(&priv->mutex);
3168 goto out_release_irq;
3170 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3172 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3173 * mac80211 will not be run successfully. */
3174 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3175 test_bit(STATUS_READY, &priv->status),
3176 UCODE_READY_TIMEOUT);
3178 if (!test_bit(STATUS_READY, &priv->status)) {
3180 "Wait for START_ALIVE timeout after %dms.\n",
3181 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3183 goto out_release_irq;
3187 /* ucode is running and will send rfkill notifications,
3188 * no need to poll the killswitch state anymore */
3189 cancel_delayed_work(&priv->_3945.rfkill_poll);
3191 iwl_led_start(priv);
3194 IWL_DEBUG_MAC80211(priv, "leave\n");
3199 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3203 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3205 struct iwl_priv *priv = hw->priv;
3207 IWL_DEBUG_MAC80211(priv, "enter\n");
3209 if (!priv->is_open) {
3210 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3216 if (iwl_is_ready_rf(priv)) {
3217 /* stop mac, cancel any scan request and clear
3218 * RXON_FILTER_ASSOC_MSK BIT
3220 mutex_lock(&priv->mutex);
3221 iwl_scan_cancel_timeout(priv, 100);
3222 mutex_unlock(&priv->mutex);
3227 flush_workqueue(priv->workqueue);
3229 /* start polling the killswitch state again */
3230 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
3231 round_jiffies_relative(2 * HZ));
3233 IWL_DEBUG_MAC80211(priv, "leave\n");
3236 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3238 struct iwl_priv *priv = hw->priv;
3240 IWL_DEBUG_MAC80211(priv, "enter\n");
3242 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3243 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3245 if (iwl3945_tx_skb(priv, skb))
3246 dev_kfree_skb_any(skb);
3248 IWL_DEBUG_MAC80211(priv, "leave\n");
3249 return NETDEV_TX_OK;
3252 void iwl3945_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
3256 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3259 /* The following should be done only at AP bring up */
3260 if (!(iwl_is_associated(priv))) {
3262 /* RXON - unassoc (to set timing command) */
3263 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3264 iwlcore_commit_rxon(priv);
3267 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3268 iwl_setup_rxon_timing(priv, vif);
3269 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3270 sizeof(priv->rxon_timing),
3271 &priv->rxon_timing);
3273 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3274 "Attempting to continue.\n");
3276 priv->staging_rxon.assoc_id = 0;
3278 if (vif->bss_conf.use_short_preamble)
3279 priv->staging_rxon.flags |=
3280 RXON_FLG_SHORT_PREAMBLE_MSK;
3282 priv->staging_rxon.flags &=
3283 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3285 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3286 if (vif->bss_conf.use_short_slot)
3287 priv->staging_rxon.flags |=
3288 RXON_FLG_SHORT_SLOT_MSK;
3290 priv->staging_rxon.flags &=
3291 ~RXON_FLG_SHORT_SLOT_MSK;
3293 /* restore RXON assoc */
3294 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3295 iwlcore_commit_rxon(priv);
3297 iwl3945_send_beacon_cmd(priv);
3299 /* FIXME - we need to add code here to detect a totally new
3300 * configuration, reset the AP, unassoc, rxon timing, assoc,
3301 * clear sta table, add BCAST sta... */
3304 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3305 struct ieee80211_vif *vif,
3306 struct ieee80211_sta *sta,
3307 struct ieee80211_key_conf *key)
3309 struct iwl_priv *priv = hw->priv;
3311 u8 sta_id = IWL_INVALID_STATION;
3314 IWL_DEBUG_MAC80211(priv, "enter\n");
3316 if (iwl3945_mod_params.sw_crypto) {
3317 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3321 static_key = !iwl_is_associated(priv);
3324 sta_id = iwl_sta_id_or_broadcast(priv, sta);
3325 if (sta_id == IWL_INVALID_STATION)
3329 mutex_lock(&priv->mutex);
3330 iwl_scan_cancel_timeout(priv, 100);
3335 ret = iwl3945_set_static_key(priv, key);
3337 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3338 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3342 ret = iwl3945_remove_static_key(priv);
3344 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3345 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3351 mutex_unlock(&priv->mutex);
3352 IWL_DEBUG_MAC80211(priv, "leave\n");
3357 static int iwl3945_mac_sta_add(struct ieee80211_hw *hw,
3358 struct ieee80211_vif *vif,
3359 struct ieee80211_sta *sta)
3361 struct iwl_priv *priv = hw->priv;
3362 struct iwl3945_sta_priv *sta_priv = (void *)sta->drv_priv;
3364 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3367 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3369 mutex_lock(&priv->mutex);
3370 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3372 sta_priv->common.sta_id = IWL_INVALID_STATION;
3375 ret = iwl_add_station_common(priv, sta->addr, is_ap, &sta->ht_cap,
3378 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3380 /* Should we return success if return code is EEXIST ? */
3381 mutex_unlock(&priv->mutex);
3385 sta_priv->common.sta_id = sta_id;
3387 /* Initialize rate scaling */
3388 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3390 iwl3945_rs_rate_init(priv, sta, sta_id);
3391 mutex_unlock(&priv->mutex);
3395 /*****************************************************************************
3399 *****************************************************************************/
3401 #ifdef CONFIG_IWLWIFI_DEBUG
3404 * The following adds a new attribute to the sysfs representation
3405 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3406 * used for controlling the debug level.
3408 * See the level definitions in iwl for details.
3410 * The debug_level being managed using sysfs below is a per device debug
3411 * level that is used instead of the global debug level if it (the per
3412 * device debug level) is set.
3414 static ssize_t show_debug_level(struct device *d,
3415 struct device_attribute *attr, char *buf)
3417 struct iwl_priv *priv = dev_get_drvdata(d);
3418 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3420 static ssize_t store_debug_level(struct device *d,
3421 struct device_attribute *attr,
3422 const char *buf, size_t count)
3424 struct iwl_priv *priv = dev_get_drvdata(d);
3428 ret = strict_strtoul(buf, 0, &val);
3430 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3432 priv->debug_level = val;
3433 if (iwl_alloc_traffic_mem(priv))
3435 "Not enough memory to generate traffic log\n");
3437 return strnlen(buf, count);
3440 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3441 show_debug_level, store_debug_level);
3443 #endif /* CONFIG_IWLWIFI_DEBUG */
3445 static ssize_t show_temperature(struct device *d,
3446 struct device_attribute *attr, char *buf)
3448 struct iwl_priv *priv = dev_get_drvdata(d);
3450 if (!iwl_is_alive(priv))
3453 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3456 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3458 static ssize_t show_tx_power(struct device *d,
3459 struct device_attribute *attr, char *buf)
3461 struct iwl_priv *priv = dev_get_drvdata(d);
3462 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3465 static ssize_t store_tx_power(struct device *d,
3466 struct device_attribute *attr,
3467 const char *buf, size_t count)
3469 struct iwl_priv *priv = dev_get_drvdata(d);
3470 char *p = (char *)buf;
3473 val = simple_strtoul(p, &p, 10);
3475 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3477 iwl3945_hw_reg_set_txpower(priv, val);
3482 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3484 static ssize_t show_flags(struct device *d,
3485 struct device_attribute *attr, char *buf)
3487 struct iwl_priv *priv = dev_get_drvdata(d);
3489 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3492 static ssize_t store_flags(struct device *d,
3493 struct device_attribute *attr,
3494 const char *buf, size_t count)
3496 struct iwl_priv *priv = dev_get_drvdata(d);
3497 u32 flags = simple_strtoul(buf, NULL, 0);
3499 mutex_lock(&priv->mutex);
3500 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3501 /* Cancel any currently running scans... */
3502 if (iwl_scan_cancel_timeout(priv, 100))
3503 IWL_WARN(priv, "Could not cancel scan.\n");
3505 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3507 priv->staging_rxon.flags = cpu_to_le32(flags);
3508 iwlcore_commit_rxon(priv);
3511 mutex_unlock(&priv->mutex);
3516 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3518 static ssize_t show_filter_flags(struct device *d,
3519 struct device_attribute *attr, char *buf)
3521 struct iwl_priv *priv = dev_get_drvdata(d);
3523 return sprintf(buf, "0x%04X\n",
3524 le32_to_cpu(priv->active_rxon.filter_flags));
3527 static ssize_t store_filter_flags(struct device *d,
3528 struct device_attribute *attr,
3529 const char *buf, size_t count)
3531 struct iwl_priv *priv = dev_get_drvdata(d);
3532 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3534 mutex_lock(&priv->mutex);
3535 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3536 /* Cancel any currently running scans... */
3537 if (iwl_scan_cancel_timeout(priv, 100))
3538 IWL_WARN(priv, "Could not cancel scan.\n");
3540 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3541 "0x%04X\n", filter_flags);
3542 priv->staging_rxon.filter_flags =
3543 cpu_to_le32(filter_flags);
3544 iwlcore_commit_rxon(priv);
3547 mutex_unlock(&priv->mutex);
3552 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3553 store_filter_flags);
3555 static ssize_t show_measurement(struct device *d,
3556 struct device_attribute *attr, char *buf)
3558 struct iwl_priv *priv = dev_get_drvdata(d);
3559 struct iwl_spectrum_notification measure_report;
3560 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3561 u8 *data = (u8 *)&measure_report;
3562 unsigned long flags;
3564 spin_lock_irqsave(&priv->lock, flags);
3565 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3566 spin_unlock_irqrestore(&priv->lock, flags);
3569 memcpy(&measure_report, &priv->measure_report, size);
3570 priv->measurement_status = 0;
3571 spin_unlock_irqrestore(&priv->lock, flags);
3573 while (size && (PAGE_SIZE - len)) {
3574 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3575 PAGE_SIZE - len, 1);
3577 if (PAGE_SIZE - len)
3581 size -= min(size, 16U);
3587 static ssize_t store_measurement(struct device *d,
3588 struct device_attribute *attr,
3589 const char *buf, size_t count)
3591 struct iwl_priv *priv = dev_get_drvdata(d);
3592 struct ieee80211_measurement_params params = {
3593 .channel = le16_to_cpu(priv->active_rxon.channel),
3594 .start_time = cpu_to_le64(priv->_3945.last_tsf),
3595 .duration = cpu_to_le16(1),
3597 u8 type = IWL_MEASURE_BASIC;
3603 strncpy(buffer, buf, min(sizeof(buffer), count));
3604 channel = simple_strtoul(p, NULL, 0);
3606 params.channel = channel;
3609 while (*p && *p != ' ')
3612 type = simple_strtoul(p + 1, NULL, 0);
3615 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3616 "channel %d (for '%s')\n", type, params.channel, buf);
3617 iwl3945_get_measurement(priv, ¶ms, type);
3622 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3623 show_measurement, store_measurement);
3625 static ssize_t store_retry_rate(struct device *d,
3626 struct device_attribute *attr,
3627 const char *buf, size_t count)
3629 struct iwl_priv *priv = dev_get_drvdata(d);
3631 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3632 if (priv->retry_rate <= 0)
3633 priv->retry_rate = 1;
3638 static ssize_t show_retry_rate(struct device *d,
3639 struct device_attribute *attr, char *buf)
3641 struct iwl_priv *priv = dev_get_drvdata(d);
3642 return sprintf(buf, "%d", priv->retry_rate);
3645 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3649 static ssize_t show_channels(struct device *d,
3650 struct device_attribute *attr, char *buf)
3652 /* all this shit doesn't belong into sysfs anyway */
3656 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3658 static ssize_t show_antenna(struct device *d,
3659 struct device_attribute *attr, char *buf)
3661 struct iwl_priv *priv = dev_get_drvdata(d);
3663 if (!iwl_is_alive(priv))
3666 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3669 static ssize_t store_antenna(struct device *d,
3670 struct device_attribute *attr,
3671 const char *buf, size_t count)
3673 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3679 if (sscanf(buf, "%1i", &ant) != 1) {
3680 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3684 if ((ant >= 0) && (ant <= 2)) {
3685 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3686 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3688 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3694 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3696 static ssize_t show_status(struct device *d,
3697 struct device_attribute *attr, char *buf)
3699 struct iwl_priv *priv = dev_get_drvdata(d);
3700 if (!iwl_is_alive(priv))
3702 return sprintf(buf, "0x%08x\n", (int)priv->status);
3705 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3707 static ssize_t dump_error_log(struct device *d,
3708 struct device_attribute *attr,
3709 const char *buf, size_t count)
3711 struct iwl_priv *priv = dev_get_drvdata(d);
3712 char *p = (char *)buf;
3715 iwl3945_dump_nic_error_log(priv);
3717 return strnlen(buf, count);
3720 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3722 /*****************************************************************************
3724 * driver setup and tear down
3726 *****************************************************************************/
3728 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3730 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3732 init_waitqueue_head(&priv->wait_command_queue);
3734 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3735 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3736 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3737 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3738 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3739 INIT_DELAYED_WORK(&priv->_3945.rfkill_poll, iwl3945_rfkill_poll);
3740 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3741 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3742 INIT_WORK(&priv->start_internal_scan, iwl_bg_start_internal_scan);
3743 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3745 iwl3945_hw_setup_deferred_work(priv);
3747 if (priv->cfg->ops->lib->recover_from_tx_stall) {
3748 init_timer(&priv->monitor_recover);
3749 priv->monitor_recover.data = (unsigned long)priv;
3750 priv->monitor_recover.function =
3751 priv->cfg->ops->lib->recover_from_tx_stall;
3754 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3755 iwl3945_irq_tasklet, (unsigned long)priv);
3758 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3760 iwl3945_hw_cancel_deferred_work(priv);
3762 cancel_delayed_work_sync(&priv->init_alive_start);
3763 cancel_delayed_work(&priv->scan_check);
3764 cancel_delayed_work(&priv->alive_start);
3765 cancel_work_sync(&priv->start_internal_scan);
3766 cancel_work_sync(&priv->beacon_update);
3767 if (priv->cfg->ops->lib->recover_from_tx_stall)
3768 del_timer_sync(&priv->monitor_recover);
3771 static struct attribute *iwl3945_sysfs_entries[] = {
3772 &dev_attr_antenna.attr,
3773 &dev_attr_channels.attr,
3774 &dev_attr_dump_errors.attr,
3775 &dev_attr_flags.attr,
3776 &dev_attr_filter_flags.attr,
3777 &dev_attr_measurement.attr,
3778 &dev_attr_retry_rate.attr,
3779 &dev_attr_status.attr,
3780 &dev_attr_temperature.attr,
3781 &dev_attr_tx_power.attr,
3782 #ifdef CONFIG_IWLWIFI_DEBUG
3783 &dev_attr_debug_level.attr,
3788 static struct attribute_group iwl3945_attribute_group = {
3789 .name = NULL, /* put in device directory */
3790 .attrs = iwl3945_sysfs_entries,
3793 static struct ieee80211_ops iwl3945_hw_ops = {
3794 .tx = iwl3945_mac_tx,
3795 .start = iwl3945_mac_start,
3796 .stop = iwl3945_mac_stop,
3797 .add_interface = iwl_mac_add_interface,
3798 .remove_interface = iwl_mac_remove_interface,
3799 .config = iwl_mac_config,
3800 .configure_filter = iwl_configure_filter,
3801 .set_key = iwl3945_mac_set_key,
3802 .conf_tx = iwl_mac_conf_tx,
3803 .reset_tsf = iwl_mac_reset_tsf,
3804 .bss_info_changed = iwl_bss_info_changed,
3805 .hw_scan = iwl_mac_hw_scan,
3806 .sta_add = iwl3945_mac_sta_add,
3807 .sta_remove = iwl_mac_sta_remove,
3810 static int iwl3945_init_drv(struct iwl_priv *priv)
3813 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3815 priv->retry_rate = 1;
3816 priv->ibss_beacon = NULL;
3818 spin_lock_init(&priv->sta_lock);
3819 spin_lock_init(&priv->hcmd_lock);
3821 INIT_LIST_HEAD(&priv->free_frames);
3823 mutex_init(&priv->mutex);
3824 mutex_init(&priv->sync_cmd_mutex);
3826 priv->ieee_channels = NULL;
3827 priv->ieee_rates = NULL;
3828 priv->band = IEEE80211_BAND_2GHZ;
3830 priv->iw_mode = NL80211_IFTYPE_STATION;
3831 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3833 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3835 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3836 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3841 ret = iwl_init_channel_map(priv);
3843 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3847 /* Set up txpower settings in driver for all channels */
3848 if (iwl3945_txpower_set_from_eeprom(priv)) {
3850 goto err_free_channel_map;
3853 ret = iwlcore_init_geos(priv);
3855 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3856 goto err_free_channel_map;
3858 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3862 err_free_channel_map:
3863 iwl_free_channel_map(priv);
3868 #define IWL3945_MAX_PROBE_REQUEST 200
3870 static int iwl3945_setup_mac(struct iwl_priv *priv)
3873 struct ieee80211_hw *hw = priv->hw;
3875 hw->rate_control_algorithm = "iwl-3945-rs";
3876 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3877 hw->vif_data_size = sizeof(struct iwl_vif_priv);
3879 /* Tell mac80211 our characteristics */
3880 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3881 IEEE80211_HW_SPECTRUM_MGMT;
3883 if (!priv->cfg->broken_powersave)
3884 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3885 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3887 hw->wiphy->interface_modes =
3888 BIT(NL80211_IFTYPE_STATION) |
3889 BIT(NL80211_IFTYPE_ADHOC);
3891 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3892 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3894 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3895 /* we create the 802.11 header and a zero-length SSID element */
3896 hw->wiphy->max_scan_ie_len = IWL3945_MAX_PROBE_REQUEST - 24 - 2;
3898 /* Default value; 4 EDCA QOS priorities */
3901 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3902 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3903 &priv->bands[IEEE80211_BAND_2GHZ];
3905 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3906 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3907 &priv->bands[IEEE80211_BAND_5GHZ];
3909 ret = ieee80211_register_hw(priv->hw);
3911 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3914 priv->mac80211_registered = 1;
3919 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3922 struct iwl_priv *priv;
3923 struct ieee80211_hw *hw;
3924 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3925 struct iwl3945_eeprom *eeprom;
3926 unsigned long flags;
3928 /***********************
3929 * 1. Allocating HW data
3930 * ********************/
3932 /* mac80211 allocates memory for this device instance, including
3933 * space for this driver's private structure */
3934 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3936 pr_err("Can not allocate network device\n");
3941 SET_IEEE80211_DEV(hw, &pdev->dev);
3944 * Disabling hardware scan means that mac80211 will perform scans
3945 * "the hard way", rather than using device's scan.
3947 if (iwl3945_mod_params.disable_hw_scan) {
3948 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3949 iwl3945_hw_ops.hw_scan = NULL;
3953 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3955 priv->pci_dev = pdev;
3956 priv->inta_mask = CSR_INI_SET_MASK;
3958 if (iwl_alloc_traffic_mem(priv))
3959 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3961 /***************************
3962 * 2. Initializing PCI bus
3963 * *************************/
3964 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
3965 PCIE_LINK_STATE_CLKPM);
3967 if (pci_enable_device(pdev)) {
3969 goto out_ieee80211_free_hw;
3972 pci_set_master(pdev);
3974 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3976 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3978 IWL_WARN(priv, "No suitable DMA available.\n");
3979 goto out_pci_disable_device;
3982 pci_set_drvdata(pdev, priv);
3983 err = pci_request_regions(pdev, DRV_NAME);
3985 goto out_pci_disable_device;
3987 /***********************
3988 * 3. Read REV Register
3989 * ********************/
3990 priv->hw_base = pci_iomap(pdev, 0, 0);
3991 if (!priv->hw_base) {
3993 goto out_pci_release_regions;
3996 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3997 (unsigned long long) pci_resource_len(pdev, 0));
3998 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4000 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4001 * PCI Tx retries from interfering with C3 CPU state */
4002 pci_write_config_byte(pdev, 0x41, 0x00);
4004 /* these spin locks will be used in apm_ops.init and EEPROM access
4005 * we should init now
4007 spin_lock_init(&priv->reg_lock);
4008 spin_lock_init(&priv->lock);
4011 * stop and reset the on-board processor just in case it is in a
4012 * strange state ... like being left stranded by a primary kernel
4013 * and this is now the kdump kernel trying to start up
4015 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4017 /***********************
4019 * ********************/
4021 /* Read the EEPROM */
4022 err = iwl_eeprom_init(priv);
4024 IWL_ERR(priv, "Unable to init EEPROM\n");
4027 /* MAC Address location in EEPROM same for 3945/4965 */
4028 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4029 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", eeprom->mac_address);
4030 SET_IEEE80211_PERM_ADDR(priv->hw, eeprom->mac_address);
4032 /***********************
4033 * 5. Setup HW Constants
4034 * ********************/
4035 /* Device-specific setup */
4036 if (iwl3945_hw_set_hw_params(priv)) {
4037 IWL_ERR(priv, "failed to set hw settings\n");
4038 goto out_eeprom_free;
4041 /***********************
4043 * ********************/
4045 err = iwl3945_init_drv(priv);
4047 IWL_ERR(priv, "initializing driver failed\n");
4048 goto out_unset_hw_params;
4051 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4054 /***********************
4056 * ********************/
4058 spin_lock_irqsave(&priv->lock, flags);
4059 iwl_disable_interrupts(priv);
4060 spin_unlock_irqrestore(&priv->lock, flags);
4062 pci_enable_msi(priv->pci_dev);
4064 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4065 IRQF_SHARED, DRV_NAME, priv);
4067 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4068 goto out_disable_msi;
4071 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4073 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4074 goto out_release_irq;
4077 iwl_set_rxon_channel(priv,
4078 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4079 iwl3945_setup_deferred_work(priv);
4080 iwl3945_setup_rx_handlers(priv);
4081 iwl_power_initialize(priv);
4083 /*********************************
4084 * 8. Setup and Register mac80211
4085 * *******************************/
4087 iwl_enable_interrupts(priv);
4089 err = iwl3945_setup_mac(priv);
4091 goto out_remove_sysfs;
4093 err = iwl_dbgfs_register(priv, DRV_NAME);
4095 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4097 /* Start monitoring the killswitch */
4098 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
4104 destroy_workqueue(priv->workqueue);
4105 priv->workqueue = NULL;
4106 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4108 free_irq(priv->pci_dev->irq, priv);
4110 pci_disable_msi(priv->pci_dev);
4111 iwlcore_free_geos(priv);
4112 iwl_free_channel_map(priv);
4113 out_unset_hw_params:
4114 iwl3945_unset_hw_params(priv);
4116 iwl_eeprom_free(priv);
4118 pci_iounmap(pdev, priv->hw_base);
4119 out_pci_release_regions:
4120 pci_release_regions(pdev);
4121 out_pci_disable_device:
4122 pci_set_drvdata(pdev, NULL);
4123 pci_disable_device(pdev);
4124 out_ieee80211_free_hw:
4125 iwl_free_traffic_mem(priv);
4126 ieee80211_free_hw(priv->hw);
4131 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4133 struct iwl_priv *priv = pci_get_drvdata(pdev);
4134 unsigned long flags;
4139 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4141 iwl_dbgfs_unregister(priv);
4143 set_bit(STATUS_EXIT_PENDING, &priv->status);
4145 if (priv->mac80211_registered) {
4146 ieee80211_unregister_hw(priv->hw);
4147 priv->mac80211_registered = 0;
4153 * Make sure device is reset to low power before unloading driver.
4154 * This may be redundant with iwl_down(), but there are paths to
4155 * run iwl_down() without calling apm_ops.stop(), and there are
4156 * paths to avoid running iwl_down() at all before leaving driver.
4157 * This (inexpensive) call *makes sure* device is reset.
4159 priv->cfg->ops->lib->apm_ops.stop(priv);
4161 /* make sure we flush any pending irq or
4162 * tasklet for the driver
4164 spin_lock_irqsave(&priv->lock, flags);
4165 iwl_disable_interrupts(priv);
4166 spin_unlock_irqrestore(&priv->lock, flags);
4168 iwl_synchronize_irq(priv);
4170 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4172 cancel_delayed_work_sync(&priv->_3945.rfkill_poll);
4174 iwl3945_dealloc_ucode_pci(priv);
4177 iwl3945_rx_queue_free(priv, &priv->rxq);
4178 iwl3945_hw_txq_ctx_free(priv);
4180 iwl3945_unset_hw_params(priv);
4182 /*netif_stop_queue(dev); */
4183 flush_workqueue(priv->workqueue);
4185 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4186 * priv->workqueue... so we can't take down the workqueue
4188 destroy_workqueue(priv->workqueue);
4189 priv->workqueue = NULL;
4190 iwl_free_traffic_mem(priv);
4192 free_irq(pdev->irq, priv);
4193 pci_disable_msi(pdev);
4195 pci_iounmap(pdev, priv->hw_base);
4196 pci_release_regions(pdev);
4197 pci_disable_device(pdev);
4198 pci_set_drvdata(pdev, NULL);
4200 iwl_free_channel_map(priv);
4201 iwlcore_free_geos(priv);
4202 kfree(priv->scan_cmd);
4203 if (priv->ibss_beacon)
4204 dev_kfree_skb(priv->ibss_beacon);
4206 ieee80211_free_hw(priv->hw);
4210 /*****************************************************************************
4212 * driver and module entry point
4214 *****************************************************************************/
4216 static struct pci_driver iwl3945_driver = {
4218 .id_table = iwl3945_hw_card_ids,
4219 .probe = iwl3945_pci_probe,
4220 .remove = __devexit_p(iwl3945_pci_remove),
4222 .suspend = iwl_pci_suspend,
4223 .resume = iwl_pci_resume,
4227 static int __init iwl3945_init(void)
4231 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4232 pr_info(DRV_COPYRIGHT "\n");
4234 ret = iwl3945_rate_control_register();
4236 pr_err("Unable to register rate control algorithm: %d\n", ret);
4240 ret = pci_register_driver(&iwl3945_driver);
4242 pr_err("Unable to initialize PCI module\n");
4243 goto error_register;
4249 iwl3945_rate_control_unregister();
4253 static void __exit iwl3945_exit(void)
4255 pci_unregister_driver(&iwl3945_driver);
4256 iwl3945_rate_control_unregister();
4259 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4261 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4262 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4263 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4264 MODULE_PARM_DESC(swcrypto,
4265 "using software crypto (default 1 [software])\n");
4266 #ifdef CONFIG_IWLWIFI_DEBUG
4267 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4268 MODULE_PARM_DESC(debug, "debug output mask");
4270 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4272 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4273 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4274 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4276 module_exit(iwl3945_exit);
4277 module_init(iwl3945_init);