1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
43 #include <net/ieee80211_radiotap.h>
44 #include <net/mac80211.h>
46 #include <asm/div64.h>
48 #define DRV_NAME "iwl3945"
51 #include "iwl-3945-fh.h"
52 #include "iwl-commands.h"
55 #include "iwl-helpers.h"
60 * module name, copyright, version, etc.
63 #define DRV_DESCRIPTION \
64 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
66 #ifdef CONFIG_IWLWIFI_DEBUG
72 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
78 #define IWL39_VERSION "1.2.26k" VD VS
79 #define DRV_COPYRIGHT "Copyright(c) 2003-2009 Intel Corporation"
80 #define DRV_AUTHOR "<ilw@linux.intel.com>"
81 #define DRV_VERSION IWL39_VERSION
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
87 MODULE_LICENSE("GPL");
89 /* module parameters */
90 struct iwl_mod_params iwl3945_mod_params = {
93 /* the rest are 0 by default */
97 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
98 * @priv: eeprom and antenna fields are used to determine antenna flags
100 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
101 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
103 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
104 * IWL_ANTENNA_MAIN - Force MAIN antenna
105 * IWL_ANTENNA_AUX - Force AUX antenna
107 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
109 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
111 switch (iwl3945_mod_params.antenna) {
112 case IWL_ANTENNA_DIVERSITY:
115 case IWL_ANTENNA_MAIN:
116 if (eeprom->antenna_switch_type)
117 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
118 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
120 case IWL_ANTENNA_AUX:
121 if (eeprom->antenna_switch_type)
122 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
123 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
126 /* bad antenna selector value */
127 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
128 iwl3945_mod_params.antenna);
130 return 0; /* "diversity" is default if error */
133 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
134 struct ieee80211_key_conf *keyconf,
138 __le16 key_flags = 0;
141 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
142 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
144 if (sta_id == priv->hw_params.bcast_sta_id)
145 key_flags |= STA_KEY_MULTICAST_MSK;
147 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
148 keyconf->hw_key_idx = keyconf->keyidx;
149 key_flags &= ~STA_KEY_FLG_INVALID;
151 spin_lock_irqsave(&priv->sta_lock, flags);
152 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
153 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
154 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
157 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
160 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
161 == STA_KEY_FLG_NO_ENC)
162 priv->stations[sta_id].sta.key.key_offset =
163 iwl_get_free_ucode_key_index(priv);
164 /* else, we are overriding an existing key => no need to allocated room
167 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
168 "no space for a new key");
170 priv->stations[sta_id].sta.key.key_flags = key_flags;
171 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
172 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
174 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
176 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
178 spin_unlock_irqrestore(&priv->sta_lock, flags);
183 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
184 struct ieee80211_key_conf *keyconf,
190 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
191 struct ieee80211_key_conf *keyconf,
197 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
201 spin_lock_irqsave(&priv->sta_lock, flags);
202 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
203 memset(&priv->stations[sta_id].sta.key, 0,
204 sizeof(struct iwl4965_keyinfo));
205 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
206 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
207 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
208 spin_unlock_irqrestore(&priv->sta_lock, flags);
210 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
211 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
215 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
216 struct ieee80211_key_conf *keyconf, u8 sta_id)
220 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
222 switch (keyconf->alg) {
224 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
227 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
230 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
233 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
237 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
238 keyconf->alg, keyconf->keylen, keyconf->keyidx,
244 static int iwl3945_remove_static_key(struct iwl_priv *priv)
246 int ret = -EOPNOTSUPP;
251 static int iwl3945_set_static_key(struct iwl_priv *priv,
252 struct ieee80211_key_conf *key)
254 if (key->alg == ALG_WEP)
257 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
261 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
263 struct list_head *element;
265 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
268 while (!list_empty(&priv->free_frames)) {
269 element = priv->free_frames.next;
271 kfree(list_entry(element, struct iwl3945_frame, list));
272 priv->frames_count--;
275 if (priv->frames_count) {
276 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
278 priv->frames_count = 0;
282 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
284 struct iwl3945_frame *frame;
285 struct list_head *element;
286 if (list_empty(&priv->free_frames)) {
287 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
289 IWL_ERR(priv, "Could not allocate frame!\n");
293 priv->frames_count++;
297 element = priv->free_frames.next;
299 return list_entry(element, struct iwl3945_frame, list);
302 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
304 memset(frame, 0, sizeof(*frame));
305 list_add(&frame->list, &priv->free_frames);
308 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
309 struct ieee80211_hdr *hdr,
313 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
314 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
315 (priv->iw_mode != NL80211_IFTYPE_AP)))
318 if (priv->ibss_beacon->len > left)
321 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
323 return priv->ibss_beacon->len;
326 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
328 struct iwl3945_frame *frame;
329 unsigned int frame_size;
333 frame = iwl3945_get_free_frame(priv);
336 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
341 rate = iwl_rate_get_lowest_plcp(priv);
343 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
345 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
348 iwl3945_free_frame(priv, frame);
353 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
355 if (priv->shared_virt)
356 pci_free_consistent(priv->pci_dev,
357 sizeof(struct iwl3945_shared),
362 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
363 struct ieee80211_tx_info *info,
364 struct iwl_device_cmd *cmd,
365 struct sk_buff *skb_frag,
368 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
369 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
371 switch (keyinfo->alg) {
373 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
374 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
375 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
382 tx_cmd->sec_ctl = TX_CMD_SEC_WEP |
383 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
385 if (keyinfo->keylen == 13)
386 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
388 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
390 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
391 "with key %d\n", info->control.hw_key->hw_key_idx);
395 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
401 * handle build REPLY_TX command notification.
403 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
404 struct iwl_device_cmd *cmd,
405 struct ieee80211_tx_info *info,
406 struct ieee80211_hdr *hdr, u8 std_id)
408 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
409 __le32 tx_flags = tx_cmd->tx_flags;
410 __le16 fc = hdr->frame_control;
412 tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
413 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
414 tx_flags |= TX_CMD_FLG_ACK_MSK;
415 if (ieee80211_is_mgmt(fc))
416 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
417 if (ieee80211_is_probe_resp(fc) &&
418 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
419 tx_flags |= TX_CMD_FLG_TSF_MSK;
421 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
422 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
425 tx_cmd->sta_id = std_id;
426 if (ieee80211_has_morefrags(fc))
427 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
429 if (ieee80211_is_data_qos(fc)) {
430 u8 *qc = ieee80211_get_qos_ctl(hdr);
431 tx_cmd->tid_tspec = qc[0] & 0xf;
432 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
434 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
437 priv->cfg->ops->utils->rts_tx_cmd_flag(info, &tx_flags);
439 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
440 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
442 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
443 if (ieee80211_is_mgmt(fc)) {
444 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
445 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
447 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
449 tx_cmd->timeout.pm_frame_timeout = 0;
452 tx_cmd->driver_txop = 0;
453 tx_cmd->tx_flags = tx_flags;
454 tx_cmd->next_frame_len = 0;
458 * start REPLY_TX command process
460 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
462 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
463 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
464 struct iwl3945_tx_cmd *tx_cmd;
465 struct iwl_tx_queue *txq = NULL;
466 struct iwl_queue *q = NULL;
467 struct iwl_device_cmd *out_cmd;
468 struct iwl_cmd_meta *out_meta;
469 dma_addr_t phys_addr;
470 dma_addr_t txcmd_phys;
471 int txq_id = skb_get_queue_mapping(skb);
472 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
479 u8 wait_write_ptr = 0;
484 spin_lock_irqsave(&priv->lock, flags);
485 if (iwl_is_rfkill(priv)) {
486 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
490 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
491 IWL_ERR(priv, "ERROR: No TX rate available.\n");
495 unicast = !is_multicast_ether_addr(hdr->addr1);
498 fc = hdr->frame_control;
500 #ifdef CONFIG_IWLWIFI_DEBUG
501 if (ieee80211_is_auth(fc))
502 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
503 else if (ieee80211_is_assoc_req(fc))
504 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
505 else if (ieee80211_is_reassoc_req(fc))
506 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
509 /* drop all non-injected data frame if we are not associated */
510 if (ieee80211_is_data(fc) &&
511 !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
512 (!iwl_is_associated(priv) ||
513 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
514 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
518 spin_unlock_irqrestore(&priv->lock, flags);
520 hdr_len = ieee80211_hdrlen(fc);
522 /* Find (or create) index into station table for destination station */
523 if (info->flags & IEEE80211_TX_CTL_INJECTED)
524 sta_id = priv->hw_params.bcast_sta_id;
526 sta_id = iwl_get_sta_id(priv, hdr);
527 if (sta_id == IWL_INVALID_STATION) {
528 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
533 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
535 if (ieee80211_is_data_qos(fc)) {
536 qc = ieee80211_get_qos_ctl(hdr);
537 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
538 if (unlikely(tid >= MAX_TID_COUNT))
540 seq_number = priv->stations[sta_id].tid[tid].seq_number &
542 hdr->seq_ctrl = cpu_to_le16(seq_number) |
544 cpu_to_le16(IEEE80211_SCTL_FRAG));
548 /* Descriptor for chosen Tx queue */
549 txq = &priv->txq[txq_id];
552 spin_lock_irqsave(&priv->lock, flags);
554 idx = get_cmd_index(q, q->write_ptr, 0);
556 /* Set up driver data for this TFD */
557 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
558 txq->txb[q->write_ptr].skb[0] = skb;
560 /* Init first empty entry in queue's array of Tx/cmd buffers */
561 out_cmd = txq->cmd[idx];
562 out_meta = &txq->meta[idx];
563 tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
564 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
565 memset(tx_cmd, 0, sizeof(*tx_cmd));
568 * Set up the Tx-command (not MAC!) header.
569 * Store the chosen Tx queue and TFD index within the sequence field;
570 * after Tx, uCode's Tx response will return this value so driver can
571 * locate the frame within the tx queue and do post-tx processing.
573 out_cmd->hdr.cmd = REPLY_TX;
574 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
575 INDEX_TO_SEQ(q->write_ptr)));
577 /* Copy MAC header from skb into command buffer */
578 memcpy(tx_cmd->hdr, hdr, hdr_len);
581 if (info->control.hw_key)
582 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
584 /* TODO need this for burst mode later on */
585 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
587 /* set is_hcca to 0; it probably will never be implemented */
588 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
590 /* Total # bytes to be transmitted */
592 tx_cmd->len = cpu_to_le16(len);
594 iwl_dbg_log_tx_data_frame(priv, len, hdr);
595 iwl_update_stats(priv, true, fc, len);
596 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
597 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
599 if (!ieee80211_has_morefrags(hdr->frame_control)) {
600 txq->need_update = 1;
602 priv->stations[sta_id].tid[tid].seq_number = seq_number;
605 txq->need_update = 0;
608 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
609 le16_to_cpu(out_cmd->hdr.sequence));
610 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx_cmd->tx_flags));
611 iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
612 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
613 ieee80211_hdrlen(fc));
616 * Use the first empty entry in this queue's command buffer array
617 * to contain the Tx command and MAC header concatenated together
618 * (payload data will be in another buffer).
619 * Size of this varies, due to varying MAC header length.
620 * If end is not dword aligned, we'll have 2 extra bytes at the end
621 * of the MAC header (device reads on dword boundaries).
622 * We'll tell device about this padding later.
624 len = sizeof(struct iwl3945_tx_cmd) +
625 sizeof(struct iwl_cmd_header) + hdr_len;
628 len = (len + 3) & ~3;
635 /* Physical address of this Tx command's header (not MAC header!),
636 * within command buffer array. */
637 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
638 len, PCI_DMA_TODEVICE);
639 /* we do not map meta data ... so we can safely access address to
640 * provide to unmap command*/
641 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
642 pci_unmap_len_set(out_meta, len, len);
644 /* Add buffer containing Tx command and MAC(!) header to TFD's
646 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
647 txcmd_phys, len, 1, 0);
650 /* Set up TFD's 2nd entry to point directly to remainder of skb,
651 * if any (802.11 null frames have no payload). */
652 len = skb->len - hdr_len;
654 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
655 len, PCI_DMA_TODEVICE);
656 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
662 /* Tell device the write index *just past* this latest filled TFD */
663 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
664 rc = iwl_txq_update_write_ptr(priv, txq);
665 spin_unlock_irqrestore(&priv->lock, flags);
670 if ((iwl_queue_space(q) < q->high_mark)
671 && priv->mac80211_registered) {
672 if (wait_write_ptr) {
673 spin_lock_irqsave(&priv->lock, flags);
674 txq->need_update = 1;
675 iwl_txq_update_write_ptr(priv, txq);
676 spin_unlock_irqrestore(&priv->lock, flags);
679 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
685 spin_unlock_irqrestore(&priv->lock, flags);
690 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
692 #include "iwl-spectrum.h"
694 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
695 #define BEACON_TIME_MASK_HIGH 0xFF000000
696 #define TIME_UNIT 1024
699 * extended beacon time format
700 * time in usec will be changed into a 32-bit value in 8:24 format
701 * the high 1 byte is the beacon counts
702 * the lower 3 bytes is the time in usec within one beacon interval
705 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
709 u32 interval = beacon_interval * 1024;
711 if (!interval || !usec)
714 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
715 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
717 return (quot << 24) + rem;
720 /* base is usually what we get from ucode with each received frame,
721 * the same as HW timer counter counting down
724 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
726 u32 base_low = base & BEACON_TIME_MASK_LOW;
727 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
728 u32 interval = beacon_interval * TIME_UNIT;
729 u32 res = (base & BEACON_TIME_MASK_HIGH) +
730 (addon & BEACON_TIME_MASK_HIGH);
732 if (base_low > addon_low)
733 res += base_low - addon_low;
734 else if (base_low < addon_low) {
735 res += interval + base_low - addon_low;
740 return cpu_to_le32(res);
743 static int iwl3945_get_measurement(struct iwl_priv *priv,
744 struct ieee80211_measurement_params *params,
747 struct iwl_spectrum_cmd spectrum;
748 struct iwl_rx_packet *pkt;
749 struct iwl_host_cmd cmd = {
750 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
751 .data = (void *)&spectrum,
752 .flags = CMD_WANT_SKB,
754 u32 add_time = le64_to_cpu(params->start_time);
756 int spectrum_resp_status;
757 int duration = le16_to_cpu(params->duration);
759 if (iwl_is_associated(priv))
761 iwl3945_usecs_to_beacons(
762 le64_to_cpu(params->start_time) - priv->last_tsf,
763 le16_to_cpu(priv->rxon_timing.beacon_interval));
765 memset(&spectrum, 0, sizeof(spectrum));
767 spectrum.channel_count = cpu_to_le16(1);
769 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
770 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
771 cmd.len = sizeof(spectrum);
772 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
774 if (iwl_is_associated(priv))
775 spectrum.start_time =
776 iwl3945_add_beacon_time(priv->last_beacon_time,
778 le16_to_cpu(priv->rxon_timing.beacon_interval));
780 spectrum.start_time = 0;
782 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
783 spectrum.channels[0].channel = params->channel;
784 spectrum.channels[0].type = type;
785 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
786 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
787 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
789 rc = iwl_send_cmd_sync(priv, &cmd);
793 pkt = (struct iwl_rx_packet *)cmd.reply_page;
794 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
795 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
799 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
800 switch (spectrum_resp_status) {
801 case 0: /* Command will be handled */
802 if (pkt->u.spectrum.id != 0xff) {
803 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
805 priv->measurement_status &= ~MEASUREMENT_READY;
807 priv->measurement_status |= MEASUREMENT_ACTIVE;
811 case 1: /* Command will not be handled */
816 free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
822 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
823 struct iwl_rx_mem_buffer *rxb)
825 struct iwl_rx_packet *pkt = rxb_addr(rxb);
826 struct iwl_alive_resp *palive;
827 struct delayed_work *pwork;
829 palive = &pkt->u.alive_frame;
831 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
833 palive->is_valid, palive->ver_type,
834 palive->ver_subtype);
836 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
837 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
838 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
839 sizeof(struct iwl_alive_resp));
840 pwork = &priv->init_alive_start;
842 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
843 memcpy(&priv->card_alive, &pkt->u.alive_frame,
844 sizeof(struct iwl_alive_resp));
845 pwork = &priv->alive_start;
846 iwl3945_disable_events(priv);
849 /* We delay the ALIVE response by 5ms to
850 * give the HW RF Kill time to activate... */
851 if (palive->is_valid == UCODE_VALID_OK)
852 queue_delayed_work(priv->workqueue, pwork,
853 msecs_to_jiffies(5));
855 IWL_WARN(priv, "uCode did not respond OK.\n");
858 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
859 struct iwl_rx_mem_buffer *rxb)
861 #ifdef CONFIG_IWLWIFI_DEBUG
862 struct iwl_rx_packet *pkt = rxb_addr(rxb);
865 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
869 static void iwl3945_bg_beacon_update(struct work_struct *work)
871 struct iwl_priv *priv =
872 container_of(work, struct iwl_priv, beacon_update);
873 struct sk_buff *beacon;
875 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
876 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
879 IWL_ERR(priv, "update beacon failed\n");
883 mutex_lock(&priv->mutex);
884 /* new beacon skb is allocated every time; dispose previous.*/
885 if (priv->ibss_beacon)
886 dev_kfree_skb(priv->ibss_beacon);
888 priv->ibss_beacon = beacon;
889 mutex_unlock(&priv->mutex);
891 iwl3945_send_beacon_cmd(priv);
894 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
895 struct iwl_rx_mem_buffer *rxb)
897 #ifdef CONFIG_IWLWIFI_DEBUG
898 struct iwl_rx_packet *pkt = rxb_addr(rxb);
899 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
900 u8 rate = beacon->beacon_notify_hdr.rate;
902 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
903 "tsf %d %d rate %d\n",
904 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
905 beacon->beacon_notify_hdr.failure_frame,
906 le32_to_cpu(beacon->ibss_mgr_status),
907 le32_to_cpu(beacon->high_tsf),
908 le32_to_cpu(beacon->low_tsf), rate);
911 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
912 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
913 queue_work(priv->workqueue, &priv->beacon_update);
916 /* Handle notification from uCode that card's power state is changing
917 * due to software, hardware, or critical temperature RFKILL */
918 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
919 struct iwl_rx_mem_buffer *rxb)
921 struct iwl_rx_packet *pkt = rxb_addr(rxb);
922 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
923 unsigned long status = priv->status;
925 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
926 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
927 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
929 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
930 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
932 if (flags & HW_CARD_DISABLED)
933 set_bit(STATUS_RF_KILL_HW, &priv->status);
935 clear_bit(STATUS_RF_KILL_HW, &priv->status);
938 iwl_scan_cancel(priv);
940 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
941 test_bit(STATUS_RF_KILL_HW, &priv->status)))
942 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
943 test_bit(STATUS_RF_KILL_HW, &priv->status));
945 wake_up_interruptible(&priv->wait_command_queue);
949 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
951 * Setup the RX handlers for each of the reply types sent from the uCode
954 * This function chains into the hardware specific files for them to setup
955 * any hardware specific handlers as well.
957 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
959 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
960 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
961 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
962 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
963 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
964 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
965 iwl_rx_pm_debug_statistics_notif;
966 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
969 * The same handler is used for both the REPLY to a discrete
970 * statistics request from the host as well as for the periodic
971 * statistics notifications (after received beacons) from the uCode.
973 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
974 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
976 iwl_setup_spectrum_handlers(priv);
977 iwl_setup_rx_scan_handlers(priv);
978 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
980 /* Set up hardware specific Rx handlers */
981 iwl3945_hw_rx_handler_setup(priv);
984 /************************** RX-FUNCTIONS ****************************/
986 * Rx theory of operation
988 * The host allocates 32 DMA target addresses and passes the host address
989 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
993 * The host/firmware share two index registers for managing the Rx buffers.
995 * The READ index maps to the first position that the firmware may be writing
996 * to -- the driver can read up to (but not including) this position and get
998 * The READ index is managed by the firmware once the card is enabled.
1000 * The WRITE index maps to the last position the driver has read from -- the
1001 * position preceding WRITE is the last slot the firmware can place a packet.
1003 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1006 * During initialization, the host sets up the READ queue position to the first
1007 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1009 * When the firmware places a packet in a buffer, it will advance the READ index
1010 * and fire the RX interrupt. The driver can then query the READ index and
1011 * process as many packets as possible, moving the WRITE index forward as it
1012 * resets the Rx queue buffers with new memory.
1014 * The management in the driver is as follows:
1015 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1016 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1017 * to replenish the iwl->rxq->rx_free.
1018 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1019 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1020 * 'processed' and 'read' driver indexes as well)
1021 * + A received packet is processed and handed to the kernel network stack,
1022 * detached from the iwl->rxq. The driver 'processed' index is updated.
1023 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1024 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1025 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1026 * were enough free buffers and RX_STALLED is set it is cleared.
1031 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1032 * iwl3945_rx_queue_restock
1033 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1034 * queue, updates firmware pointers, and updates
1035 * the WRITE index. If insufficient rx_free buffers
1036 * are available, schedules iwl3945_rx_replenish
1038 * -- enable interrupts --
1039 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1040 * READ INDEX, detaching the SKB from the pool.
1041 * Moves the packet buffer from queue to rx_used.
1042 * Calls iwl3945_rx_queue_restock to refill any empty
1049 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1051 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1052 dma_addr_t dma_addr)
1054 return cpu_to_le32((u32)dma_addr);
1058 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1060 * If there are slots in the RX queue that need to be restocked,
1061 * and we have free pre-allocated buffers, fill the ranks as much
1062 * as we can, pulling from rx_free.
1064 * This moves the 'write' index forward to catch up with 'processed', and
1065 * also updates the memory address in the firmware to reference the new
1068 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1070 struct iwl_rx_queue *rxq = &priv->rxq;
1071 struct list_head *element;
1072 struct iwl_rx_mem_buffer *rxb;
1073 unsigned long flags;
1076 spin_lock_irqsave(&rxq->lock, flags);
1077 write = rxq->write & ~0x7;
1078 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1079 /* Get next free Rx buffer, remove from free list */
1080 element = rxq->rx_free.next;
1081 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1084 /* Point to Rx buffer via next RBD in circular buffer */
1085 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1086 rxq->queue[rxq->write] = rxb;
1087 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1090 spin_unlock_irqrestore(&rxq->lock, flags);
1091 /* If the pre-allocated buffer pool is dropping low, schedule to
1093 if (rxq->free_count <= RX_LOW_WATERMARK)
1094 queue_work(priv->workqueue, &priv->rx_replenish);
1097 /* If we've added more space for the firmware to place data, tell it.
1098 * Increment device's write pointer in multiples of 8. */
1099 if ((rxq->write_actual != (rxq->write & ~0x7))
1100 || (abs(rxq->write - rxq->read) > 7)) {
1101 spin_lock_irqsave(&rxq->lock, flags);
1102 rxq->need_update = 1;
1103 spin_unlock_irqrestore(&rxq->lock, flags);
1104 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1113 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1115 * When moving to rx_free an SKB is allocated for the slot.
1117 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1118 * This is called as a scheduled work item (except for during initialization)
1120 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1122 struct iwl_rx_queue *rxq = &priv->rxq;
1123 struct list_head *element;
1124 struct iwl_rx_mem_buffer *rxb;
1126 unsigned long flags;
1127 gfp_t gfp_mask = priority;
1130 spin_lock_irqsave(&rxq->lock, flags);
1132 if (list_empty(&rxq->rx_used)) {
1133 spin_unlock_irqrestore(&rxq->lock, flags);
1136 spin_unlock_irqrestore(&rxq->lock, flags);
1138 if (rxq->free_count > RX_LOW_WATERMARK)
1139 gfp_mask |= __GFP_NOWARN;
1141 if (priv->hw_params.rx_page_order > 0)
1142 gfp_mask |= __GFP_COMP;
1144 /* Alloc a new receive buffer */
1145 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1147 if (net_ratelimit())
1148 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1149 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1151 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1152 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1154 /* We don't reschedule replenish work here -- we will
1155 * call the restock method and if it still needs
1156 * more buffers it will schedule replenish */
1160 spin_lock_irqsave(&rxq->lock, flags);
1161 if (list_empty(&rxq->rx_used)) {
1162 spin_unlock_irqrestore(&rxq->lock, flags);
1163 __free_pages(page, priv->hw_params.rx_page_order);
1166 element = rxq->rx_used.next;
1167 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1169 spin_unlock_irqrestore(&rxq->lock, flags);
1172 /* Get physical address of RB/SKB */
1173 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1174 PAGE_SIZE << priv->hw_params.rx_page_order,
1175 PCI_DMA_FROMDEVICE);
1177 spin_lock_irqsave(&rxq->lock, flags);
1179 list_add_tail(&rxb->list, &rxq->rx_free);
1181 priv->alloc_rxb_page++;
1183 spin_unlock_irqrestore(&rxq->lock, flags);
1187 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1189 unsigned long flags;
1191 spin_lock_irqsave(&rxq->lock, flags);
1192 INIT_LIST_HEAD(&rxq->rx_free);
1193 INIT_LIST_HEAD(&rxq->rx_used);
1194 /* Fill the rx_used queue with _all_ of the Rx buffers */
1195 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1196 /* In the reset function, these buffers may have been allocated
1197 * to an SKB, so we need to unmap and free potential storage */
1198 if (rxq->pool[i].page != NULL) {
1199 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1200 PAGE_SIZE << priv->hw_params.rx_page_order,
1201 PCI_DMA_FROMDEVICE);
1202 priv->alloc_rxb_page--;
1203 __free_pages(rxq->pool[i].page,
1204 priv->hw_params.rx_page_order);
1205 rxq->pool[i].page = NULL;
1207 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1210 /* Set us so that we have processed and used all buffers, but have
1211 * not restocked the Rx queue with fresh buffers */
1212 rxq->read = rxq->write = 0;
1213 rxq->write_actual = 0;
1214 rxq->free_count = 0;
1215 spin_unlock_irqrestore(&rxq->lock, flags);
1218 void iwl3945_rx_replenish(void *data)
1220 struct iwl_priv *priv = data;
1221 unsigned long flags;
1223 iwl3945_rx_allocate(priv, GFP_KERNEL);
1225 spin_lock_irqsave(&priv->lock, flags);
1226 iwl3945_rx_queue_restock(priv);
1227 spin_unlock_irqrestore(&priv->lock, flags);
1230 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1232 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1234 iwl3945_rx_queue_restock(priv);
1238 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1239 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1240 * This free routine walks the list of POOL entries and if SKB is set to
1241 * non NULL it is unmapped and freed
1243 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1246 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1247 if (rxq->pool[i].page != NULL) {
1248 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1249 PAGE_SIZE << priv->hw_params.rx_page_order,
1250 PCI_DMA_FROMDEVICE);
1251 __free_pages(rxq->pool[i].page,
1252 priv->hw_params.rx_page_order);
1253 rxq->pool[i].page = NULL;
1254 priv->alloc_rxb_page--;
1258 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1260 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1261 rxq->rb_stts, rxq->rb_stts_dma);
1263 rxq->rb_stts = NULL;
1267 /* Convert linear signal-to-noise ratio into dB */
1268 static u8 ratio2dB[100] = {
1269 /* 0 1 2 3 4 5 6 7 8 9 */
1270 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1271 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1272 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1273 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1274 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1275 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1276 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1277 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1278 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1279 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1282 /* Calculates a relative dB value from a ratio of linear
1283 * (i.e. not dB) signal levels.
1284 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1285 int iwl3945_calc_db_from_ratio(int sig_ratio)
1287 /* 1000:1 or higher just report as 60 dB */
1288 if (sig_ratio >= 1000)
1291 /* 100:1 or higher, divide by 10 and use table,
1292 * add 20 dB to make up for divide by 10 */
1293 if (sig_ratio >= 100)
1294 return 20 + (int)ratio2dB[sig_ratio/10];
1296 /* We shouldn't see this */
1300 /* Use table for ratios 1:1 - 99:1 */
1301 return (int)ratio2dB[sig_ratio];
1304 #define PERFECT_RSSI (-20) /* dBm */
1305 #define WORST_RSSI (-95) /* dBm */
1306 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1308 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1309 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1310 * about formulas used below. */
1311 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1314 int degradation = PERFECT_RSSI - rssi_dbm;
1316 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1317 * as indicator; formula is (signal dbm - noise dbm).
1318 * SNR at or above 40 is a great signal (100%).
1319 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1320 * Weakest usable signal is usually 10 - 15 dB SNR. */
1322 if (rssi_dbm - noise_dbm >= 40)
1324 else if (rssi_dbm < noise_dbm)
1326 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1328 /* Else use just the signal level.
1329 * This formula is a least squares fit of data points collected and
1330 * compared with a reference system that had a percentage (%) display
1331 * for signal quality. */
1333 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1334 (15 * RSSI_RANGE + 62 * degradation)) /
1335 (RSSI_RANGE * RSSI_RANGE);
1339 else if (sig_qual < 1)
1346 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1348 * Uses the priv->rx_handlers callback function array to invoke
1349 * the appropriate handlers, including command responses,
1350 * frame-received notifications, and other notifications.
1352 static void iwl3945_rx_handle(struct iwl_priv *priv)
1354 struct iwl_rx_mem_buffer *rxb;
1355 struct iwl_rx_packet *pkt;
1356 struct iwl_rx_queue *rxq = &priv->rxq;
1359 unsigned long flags;
1362 int total_empty = 0;
1364 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1365 * buffer that the driver may process (last buffer filled by ucode). */
1366 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1369 /* calculate total frames need to be restock after handling RX */
1370 total_empty = r - rxq->write_actual;
1371 if (total_empty < 0)
1372 total_empty += RX_QUEUE_SIZE;
1374 if (total_empty > (RX_QUEUE_SIZE / 2))
1376 /* Rx interrupt, but nothing sent from uCode */
1378 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1381 rxb = rxq->queue[i];
1383 /* If an RXB doesn't have a Rx queue slot associated with it,
1384 * then a bug has been introduced in the queue refilling
1385 * routines -- catch it here */
1386 BUG_ON(rxb == NULL);
1388 rxq->queue[i] = NULL;
1390 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1391 PAGE_SIZE << priv->hw_params.rx_page_order,
1392 PCI_DMA_FROMDEVICE);
1393 pkt = rxb_addr(rxb);
1395 trace_iwlwifi_dev_rx(priv, pkt,
1396 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1398 /* Reclaim a command buffer only if this packet is a response
1399 * to a (driver-originated) command.
1400 * If the packet (e.g. Rx frame) originated from uCode,
1401 * there is no command buffer to reclaim.
1402 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1403 * but apparently a few don't get set; catch them here. */
1404 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1405 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1406 (pkt->hdr.cmd != REPLY_TX);
1408 /* Based on type of command response or notification,
1409 * handle those that need handling via function in
1410 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1411 if (priv->rx_handlers[pkt->hdr.cmd]) {
1412 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1413 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1414 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1415 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1417 /* No handling needed */
1419 "r %d i %d No handler needed for %s, 0x%02x\n",
1420 r, i, get_cmd_string(pkt->hdr.cmd),
1425 * XXX: After here, we should always check rxb->page
1426 * against NULL before touching it or its virtual
1427 * memory (pkt). Because some rx_handler might have
1428 * already taken or freed the pages.
1432 /* Invoke any callbacks, transfer the buffer to caller,
1433 * and fire off the (possibly) blocking iwl_send_cmd()
1434 * as we reclaim the driver command queue */
1436 iwl_tx_cmd_complete(priv, rxb);
1438 IWL_WARN(priv, "Claim null rxb?\n");
1441 /* Reuse the page if possible. For notification packets and
1442 * SKBs that fail to Rx correctly, add them back into the
1443 * rx_free list for reuse later. */
1444 spin_lock_irqsave(&rxq->lock, flags);
1445 if (rxb->page != NULL) {
1446 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1447 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1448 PCI_DMA_FROMDEVICE);
1449 list_add_tail(&rxb->list, &rxq->rx_free);
1452 list_add_tail(&rxb->list, &rxq->rx_used);
1454 spin_unlock_irqrestore(&rxq->lock, flags);
1456 i = (i + 1) & RX_QUEUE_MASK;
1457 /* If there are a lot of unused frames,
1458 * restock the Rx queue so ucode won't assert. */
1463 iwl3945_rx_replenish_now(priv);
1469 /* Backtrack one entry */
1472 iwl3945_rx_replenish_now(priv);
1474 iwl3945_rx_queue_restock(priv);
1477 /* call this function to flush any scheduled tasklet */
1478 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1480 /* wait to make sure we flush pending tasklet*/
1481 synchronize_irq(priv->pci_dev->irq);
1482 tasklet_kill(&priv->irq_tasklet);
1485 #ifdef CONFIG_IWLWIFI_DEBUG
1486 static const char *desc_lookup(int i)
1494 return "BAD_CHECKSUM";
1496 return "NMI_INTERRUPT";
1500 return "FATAL_ERROR";
1506 #define ERROR_START_OFFSET (1 * sizeof(u32))
1507 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1509 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1512 u32 desc, time, count, base, data1;
1513 u32 blink1, blink2, ilink1, ilink2;
1515 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1517 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1518 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1523 count = iwl_read_targ_mem(priv, base);
1525 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1526 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1527 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1528 priv->status, count);
1531 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1532 "ilink1 nmiPC Line\n");
1533 for (i = ERROR_START_OFFSET;
1534 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1535 i += ERROR_ELEM_SIZE) {
1536 desc = iwl_read_targ_mem(priv, base + i);
1538 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1540 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1542 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1544 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1546 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1548 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1551 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1552 desc_lookup(desc), desc, time, blink1, blink2,
1553 ilink1, ilink2, data1);
1554 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1555 0, blink1, blink2, ilink1, ilink2);
1559 #define EVENT_START_OFFSET (6 * sizeof(u32))
1562 * iwl3945_print_event_log - Dump error event log to syslog
1565 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1566 u32 num_events, u32 mode)
1569 u32 base; /* SRAM byte address of event log header */
1570 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1571 u32 ptr; /* SRAM byte address of log data */
1572 u32 ev, time, data; /* event log data */
1573 unsigned long reg_flags;
1575 if (num_events == 0)
1578 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1581 event_size = 2 * sizeof(u32);
1583 event_size = 3 * sizeof(u32);
1585 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1587 /* Make sure device is powered up for SRAM reads */
1588 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1589 iwl_grab_nic_access(priv);
1591 /* Set starting address; reads will auto-increment */
1592 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1595 /* "time" is actually "data" for mode 0 (no timestamp).
1596 * place event id # at far right for easier visual parsing. */
1597 for (i = 0; i < num_events; i++) {
1598 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1599 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1602 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1603 trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
1605 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1606 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1607 trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
1611 /* Allow device to power down */
1612 iwl_release_nic_access(priv);
1613 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1616 /* For sanity check only. Actual size is determined by uCode, typ. 512 */
1617 #define IWL3945_MAX_EVENT_LOG_SIZE (512)
1619 void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1621 u32 base; /* SRAM byte address of event log header */
1622 u32 capacity; /* event log capacity in # entries */
1623 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1624 u32 num_wraps; /* # times uCode wrapped to top of log */
1625 u32 next_entry; /* index of next entry to be written by uCode */
1626 u32 size; /* # entries that we'll print */
1628 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1629 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1630 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1634 /* event log header */
1635 capacity = iwl_read_targ_mem(priv, base);
1636 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1637 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1638 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1640 if (capacity > IWL3945_MAX_EVENT_LOG_SIZE) {
1641 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1642 capacity, IWL3945_MAX_EVENT_LOG_SIZE);
1643 capacity = IWL3945_MAX_EVENT_LOG_SIZE;
1646 if (next_entry > IWL3945_MAX_EVENT_LOG_SIZE) {
1647 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1648 next_entry, IWL3945_MAX_EVENT_LOG_SIZE);
1649 next_entry = IWL3945_MAX_EVENT_LOG_SIZE;
1652 size = num_wraps ? capacity : next_entry;
1654 /* bail out if nothing in log */
1656 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1660 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1663 /* if uCode has wrapped back to top of log, start at the oldest entry,
1664 * i.e the next one that uCode would fill. */
1666 iwl3945_print_event_log(priv, next_entry,
1667 capacity - next_entry, mode);
1669 /* (then/else) start at top of log */
1670 iwl3945_print_event_log(priv, 0, next_entry, mode);
1674 void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1678 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1684 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1686 u32 inta, handled = 0;
1688 unsigned long flags;
1689 #ifdef CONFIG_IWLWIFI_DEBUG
1693 spin_lock_irqsave(&priv->lock, flags);
1695 /* Ack/clear/reset pending uCode interrupts.
1696 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1697 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1698 inta = iwl_read32(priv, CSR_INT);
1699 iwl_write32(priv, CSR_INT, inta);
1701 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1702 * Any new interrupts that happen after this, either while we're
1703 * in this tasklet, or later, will show up in next ISR/tasklet. */
1704 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1705 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1707 #ifdef CONFIG_IWLWIFI_DEBUG
1708 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1709 /* just for debug */
1710 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1711 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1712 inta, inta_mask, inta_fh);
1716 spin_unlock_irqrestore(&priv->lock, flags);
1718 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1719 * atomic, make sure that inta covers all the interrupts that
1720 * we've discovered, even if FH interrupt came in just after
1721 * reading CSR_INT. */
1722 if (inta_fh & CSR39_FH_INT_RX_MASK)
1723 inta |= CSR_INT_BIT_FH_RX;
1724 if (inta_fh & CSR39_FH_INT_TX_MASK)
1725 inta |= CSR_INT_BIT_FH_TX;
1727 /* Now service all interrupt bits discovered above. */
1728 if (inta & CSR_INT_BIT_HW_ERR) {
1729 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1731 /* Tell the device to stop sending interrupts */
1732 iwl_disable_interrupts(priv);
1734 priv->isr_stats.hw++;
1735 iwl_irq_handle_error(priv);
1737 handled |= CSR_INT_BIT_HW_ERR;
1742 #ifdef CONFIG_IWLWIFI_DEBUG
1743 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1744 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1745 if (inta & CSR_INT_BIT_SCD) {
1746 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1747 "the frame/frames.\n");
1748 priv->isr_stats.sch++;
1751 /* Alive notification via Rx interrupt will do the real work */
1752 if (inta & CSR_INT_BIT_ALIVE) {
1753 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1754 priv->isr_stats.alive++;
1758 /* Safely ignore these bits for debug checks below */
1759 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1761 /* Error detected by uCode */
1762 if (inta & CSR_INT_BIT_SW_ERR) {
1763 IWL_ERR(priv, "Microcode SW error detected. "
1764 "Restarting 0x%X.\n", inta);
1765 priv->isr_stats.sw++;
1766 priv->isr_stats.sw_err = inta;
1767 iwl_irq_handle_error(priv);
1768 handled |= CSR_INT_BIT_SW_ERR;
1771 /* uCode wakes up after power-down sleep */
1772 if (inta & CSR_INT_BIT_WAKEUP) {
1773 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1774 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1775 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1776 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1777 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1778 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1779 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1780 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1782 priv->isr_stats.wakeup++;
1783 handled |= CSR_INT_BIT_WAKEUP;
1786 /* All uCode command responses, including Tx command responses,
1787 * Rx "responses" (frame-received notification), and other
1788 * notifications from uCode come through here*/
1789 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1790 iwl3945_rx_handle(priv);
1791 priv->isr_stats.rx++;
1792 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1795 if (inta & CSR_INT_BIT_FH_TX) {
1796 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1797 priv->isr_stats.tx++;
1799 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1800 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1801 (FH39_SRVC_CHNL), 0x0);
1802 handled |= CSR_INT_BIT_FH_TX;
1805 if (inta & ~handled) {
1806 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1807 priv->isr_stats.unhandled++;
1810 if (inta & ~priv->inta_mask) {
1811 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1812 inta & ~priv->inta_mask);
1813 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1816 /* Re-enable all interrupts */
1817 /* only Re-enable if disabled by irq */
1818 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1819 iwl_enable_interrupts(priv);
1821 #ifdef CONFIG_IWLWIFI_DEBUG
1822 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1823 inta = iwl_read32(priv, CSR_INT);
1824 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1825 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1826 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1827 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1832 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1833 enum ieee80211_band band,
1834 u8 is_active, u8 n_probes,
1835 struct iwl3945_scan_channel *scan_ch)
1837 struct ieee80211_channel *chan;
1838 const struct ieee80211_supported_band *sband;
1839 const struct iwl_channel_info *ch_info;
1840 u16 passive_dwell = 0;
1841 u16 active_dwell = 0;
1844 sband = iwl_get_hw_mode(priv, band);
1848 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1849 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1851 if (passive_dwell <= active_dwell)
1852 passive_dwell = active_dwell + 1;
1854 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1855 chan = priv->scan_request->channels[i];
1857 if (chan->band != band)
1860 scan_ch->channel = chan->hw_value;
1862 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1863 if (!is_channel_valid(ch_info)) {
1864 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1869 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1870 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1871 /* If passive , set up for auto-switch
1872 * and use long active_dwell time.
1874 if (!is_active || is_channel_passive(ch_info) ||
1875 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1876 scan_ch->type = 0; /* passive */
1877 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1878 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1880 scan_ch->type = 1; /* active */
1883 /* Set direct probe bits. These may be used both for active
1884 * scan channels (probes gets sent right away),
1885 * or for passive channels (probes get se sent only after
1886 * hearing clear Rx packet).*/
1887 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1889 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1891 /* uCode v1 does not allow setting direct probe bits on
1892 * passive channel. */
1893 if ((scan_ch->type & 1) && n_probes)
1894 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1897 /* Set txpower levels to defaults */
1898 scan_ch->tpc.dsp_atten = 110;
1899 /* scan_pwr_info->tpc.dsp_atten; */
1901 /*scan_pwr_info->tpc.tx_gain; */
1902 if (band == IEEE80211_BAND_5GHZ)
1903 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1905 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1906 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1908 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1912 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1914 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1915 (scan_ch->type & 1) ?
1916 active_dwell : passive_dwell);
1922 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1926 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1927 struct ieee80211_rate *rates)
1931 for (i = 0; i < IWL_RATE_COUNT; i++) {
1932 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1933 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1934 rates[i].hw_value_short = i;
1936 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1938 * If CCK != 1M then set short preamble rate flag.
1940 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1941 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1946 /******************************************************************************
1948 * uCode download functions
1950 ******************************************************************************/
1952 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1954 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1955 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1956 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1957 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1958 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1959 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1963 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1964 * looking at all data.
1966 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1973 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1975 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1976 IWL39_RTC_INST_LOWER_BOUND);
1979 for (; len > 0; len -= sizeof(u32), image++) {
1980 /* read data comes through single port, auto-incr addr */
1981 /* NOTE: Use the debugless read so we don't flood kernel log
1982 * if IWL_DL_IO is set */
1983 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1984 if (val != le32_to_cpu(*image)) {
1985 IWL_ERR(priv, "uCode INST section is invalid at "
1986 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1987 save_len - len, val, le32_to_cpu(*image));
1997 IWL_DEBUG_INFO(priv,
1998 "ucode image in INSTRUCTION memory is good\n");
2005 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2006 * using sample data 100 bytes apart. If these sample points are good,
2007 * it's a pretty good bet that everything between them is good, too.
2009 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2016 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2018 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2019 /* read data comes through single port, auto-incr addr */
2020 /* NOTE: Use the debugless read so we don't flood kernel log
2021 * if IWL_DL_IO is set */
2022 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2023 i + IWL39_RTC_INST_LOWER_BOUND);
2024 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2025 if (val != le32_to_cpu(*image)) {
2026 #if 0 /* Enable this if you want to see details */
2027 IWL_ERR(priv, "uCode INST section is invalid at "
2028 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2043 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2044 * and verify its contents
2046 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2053 image = (__le32 *)priv->ucode_boot.v_addr;
2054 len = priv->ucode_boot.len;
2055 rc = iwl3945_verify_inst_sparse(priv, image, len);
2057 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2061 /* Try initialize */
2062 image = (__le32 *)priv->ucode_init.v_addr;
2063 len = priv->ucode_init.len;
2064 rc = iwl3945_verify_inst_sparse(priv, image, len);
2066 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2070 /* Try runtime/protocol */
2071 image = (__le32 *)priv->ucode_code.v_addr;
2072 len = priv->ucode_code.len;
2073 rc = iwl3945_verify_inst_sparse(priv, image, len);
2075 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2079 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2081 /* Since nothing seems to match, show first several data entries in
2082 * instruction SRAM, so maybe visual inspection will give a clue.
2083 * Selection of bootstrap image (vs. other images) is arbitrary. */
2084 image = (__le32 *)priv->ucode_boot.v_addr;
2085 len = priv->ucode_boot.len;
2086 rc = iwl3945_verify_inst_full(priv, image, len);
2091 static void iwl3945_nic_start(struct iwl_priv *priv)
2093 /* Remove all resets to allow NIC to operate */
2094 iwl_write32(priv, CSR_RESET, 0);
2098 * iwl3945_read_ucode - Read uCode images from disk file.
2100 * Copy into buffers for card to fetch via bus-mastering
2102 static int iwl3945_read_ucode(struct iwl_priv *priv)
2104 const struct iwl_ucode_header *ucode;
2105 int ret = -EINVAL, index;
2106 const struct firmware *ucode_raw;
2107 /* firmware file name contains uCode/driver compatibility version */
2108 const char *name_pre = priv->cfg->fw_name_pre;
2109 const unsigned int api_max = priv->cfg->ucode_api_max;
2110 const unsigned int api_min = priv->cfg->ucode_api_min;
2114 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2116 /* Ask kernel firmware_class module to get the boot firmware off disk.
2117 * request_firmware() is synchronous, file is in memory on return. */
2118 for (index = api_max; index >= api_min; index--) {
2119 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2120 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2122 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2129 if (index < api_max)
2130 IWL_ERR(priv, "Loaded firmware %s, "
2131 "which is deprecated. "
2132 " Please use API v%u instead.\n",
2134 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2135 "(%zd bytes) from disk\n",
2136 buf, ucode_raw->size);
2144 /* Make sure that we got at least our header! */
2145 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
2146 IWL_ERR(priv, "File size way too small!\n");
2151 /* Data from ucode file: header followed by uCode images */
2152 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2154 priv->ucode_ver = le32_to_cpu(ucode->ver);
2155 api_ver = IWL_UCODE_API(priv->ucode_ver);
2156 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2157 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2158 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2160 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2161 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2162 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2164 /* api_ver should match the api version forming part of the
2165 * firmware filename ... but we don't check for that and only rely
2166 * on the API version read from firmware header from here on forward */
2168 if (api_ver < api_min || api_ver > api_max) {
2169 IWL_ERR(priv, "Driver unable to support your firmware API. "
2170 "Driver supports v%u, firmware is v%u.\n",
2172 priv->ucode_ver = 0;
2176 if (api_ver != api_max)
2177 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2178 "got %u. New firmware can be obtained "
2179 "from http://www.intellinuxwireless.org.\n",
2182 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2183 IWL_UCODE_MAJOR(priv->ucode_ver),
2184 IWL_UCODE_MINOR(priv->ucode_ver),
2185 IWL_UCODE_API(priv->ucode_ver),
2186 IWL_UCODE_SERIAL(priv->ucode_ver));
2188 snprintf(priv->hw->wiphy->fw_version,
2189 sizeof(priv->hw->wiphy->fw_version),
2191 IWL_UCODE_MAJOR(priv->ucode_ver),
2192 IWL_UCODE_MINOR(priv->ucode_ver),
2193 IWL_UCODE_API(priv->ucode_ver),
2194 IWL_UCODE_SERIAL(priv->ucode_ver));
2196 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2198 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2200 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2202 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2204 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2206 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2210 /* Verify size of file vs. image size info in file's header */
2211 if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2212 inst_size + data_size + init_size +
2213 init_data_size + boot_size) {
2215 IWL_DEBUG_INFO(priv,
2216 "uCode file size %zd does not match expected size\n",
2222 /* Verify that uCode images will fit in card's SRAM */
2223 if (inst_size > IWL39_MAX_INST_SIZE) {
2224 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2230 if (data_size > IWL39_MAX_DATA_SIZE) {
2231 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2236 if (init_size > IWL39_MAX_INST_SIZE) {
2237 IWL_DEBUG_INFO(priv,
2238 "uCode init instr len %d too large to fit in\n",
2243 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2244 IWL_DEBUG_INFO(priv,
2245 "uCode init data len %d too large to fit in\n",
2250 if (boot_size > IWL39_MAX_BSM_SIZE) {
2251 IWL_DEBUG_INFO(priv,
2252 "uCode boot instr len %d too large to fit in\n",
2258 /* Allocate ucode buffers for card's bus-master loading ... */
2260 /* Runtime instructions and 2 copies of data:
2261 * 1) unmodified from disk
2262 * 2) backup cache for save/restore during power-downs */
2263 priv->ucode_code.len = inst_size;
2264 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2266 priv->ucode_data.len = data_size;
2267 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2269 priv->ucode_data_backup.len = data_size;
2270 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2272 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2273 !priv->ucode_data_backup.v_addr)
2276 /* Initialization instructions and data */
2277 if (init_size && init_data_size) {
2278 priv->ucode_init.len = init_size;
2279 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2281 priv->ucode_init_data.len = init_data_size;
2282 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2284 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2288 /* Bootstrap (instructions only, no data) */
2290 priv->ucode_boot.len = boot_size;
2291 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2293 if (!priv->ucode_boot.v_addr)
2297 /* Copy images into buffers for card's bus-master reads ... */
2299 /* Runtime instructions (first block of data in file) */
2301 IWL_DEBUG_INFO(priv,
2302 "Copying (but not loading) uCode instr len %zd\n", len);
2303 memcpy(priv->ucode_code.v_addr, src, len);
2306 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2307 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2309 /* Runtime data (2nd block)
2310 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2312 IWL_DEBUG_INFO(priv,
2313 "Copying (but not loading) uCode data len %zd\n", len);
2314 memcpy(priv->ucode_data.v_addr, src, len);
2315 memcpy(priv->ucode_data_backup.v_addr, src, len);
2318 /* Initialization instructions (3rd block) */
2321 IWL_DEBUG_INFO(priv,
2322 "Copying (but not loading) init instr len %zd\n", len);
2323 memcpy(priv->ucode_init.v_addr, src, len);
2327 /* Initialization data (4th block) */
2328 if (init_data_size) {
2329 len = init_data_size;
2330 IWL_DEBUG_INFO(priv,
2331 "Copying (but not loading) init data len %zd\n", len);
2332 memcpy(priv->ucode_init_data.v_addr, src, len);
2336 /* Bootstrap instructions (5th block) */
2338 IWL_DEBUG_INFO(priv,
2339 "Copying (but not loading) boot instr len %zd\n", len);
2340 memcpy(priv->ucode_boot.v_addr, src, len);
2342 /* We have our copies now, allow OS release its copies */
2343 release_firmware(ucode_raw);
2347 IWL_ERR(priv, "failed to allocate pci memory\n");
2349 iwl3945_dealloc_ucode_pci(priv);
2352 release_firmware(ucode_raw);
2360 * iwl3945_set_ucode_ptrs - Set uCode address location
2362 * Tell initialization uCode where to find runtime uCode.
2364 * BSM registers initially contain pointers to initialization uCode.
2365 * We need to replace them to load runtime uCode inst and data,
2366 * and to save runtime data when powering down.
2368 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2373 /* bits 31:0 for 3945 */
2374 pinst = priv->ucode_code.p_addr;
2375 pdata = priv->ucode_data_backup.p_addr;
2377 /* Tell bootstrap uCode where to find image to load */
2378 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2379 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2380 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2381 priv->ucode_data.len);
2383 /* Inst byte count must be last to set up, bit 31 signals uCode
2384 * that all new ptr/size info is in place */
2385 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2386 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2388 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2394 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2396 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2398 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2400 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2402 /* Check alive response for "valid" sign from uCode */
2403 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2404 /* We had an error bringing up the hardware, so take it
2405 * all the way back down so we can try again */
2406 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2410 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2411 * This is a paranoid check, because we would not have gotten the
2412 * "initialize" alive if code weren't properly loaded. */
2413 if (iwl3945_verify_ucode(priv)) {
2414 /* Runtime instruction load was bad;
2415 * take it all the way back down so we can try again */
2416 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2420 /* Send pointers to protocol/runtime uCode image ... init code will
2421 * load and launch runtime uCode, which will send us another "Alive"
2423 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2424 if (iwl3945_set_ucode_ptrs(priv)) {
2425 /* Runtime instruction load won't happen;
2426 * take it all the way back down so we can try again */
2427 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2433 queue_work(priv->workqueue, &priv->restart);
2437 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2438 * from protocol/runtime uCode (initialization uCode's
2439 * Alive gets handled by iwl3945_init_alive_start()).
2441 static void iwl3945_alive_start(struct iwl_priv *priv)
2443 int thermal_spin = 0;
2446 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2448 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2449 /* We had an error bringing up the hardware, so take it
2450 * all the way back down so we can try again */
2451 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2455 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2456 * This is a paranoid check, because we would not have gotten the
2457 * "runtime" alive if code weren't properly loaded. */
2458 if (iwl3945_verify_ucode(priv)) {
2459 /* Runtime instruction load was bad;
2460 * take it all the way back down so we can try again */
2461 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2465 iwl_clear_stations_table(priv);
2467 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2468 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2471 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2472 /* if RFKILL is not on, then wait for thermal
2473 * sensor in adapter to kick in */
2474 while (iwl3945_hw_get_temperature(priv) == 0) {
2480 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2483 set_bit(STATUS_RF_KILL_HW, &priv->status);
2485 /* After the ALIVE response, we can send commands to 3945 uCode */
2486 set_bit(STATUS_ALIVE, &priv->status);
2488 if (iwl_is_rfkill(priv))
2491 ieee80211_wake_queues(priv->hw);
2493 priv->active_rate = priv->rates_mask;
2494 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2496 iwl_power_update_mode(priv, false);
2498 if (iwl_is_associated(priv)) {
2499 struct iwl3945_rxon_cmd *active_rxon =
2500 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2502 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2503 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2505 /* Initialize our rx_config data */
2506 iwl_connection_init_rx_config(priv, priv->iw_mode);
2509 /* Configure Bluetooth device coexistence support */
2510 iwl_send_bt_config(priv);
2512 /* Configure the adapter for unassociated operation */
2513 iwlcore_commit_rxon(priv);
2515 iwl3945_reg_txpower_periodic(priv);
2517 iwl_leds_init(priv);
2519 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2520 set_bit(STATUS_READY, &priv->status);
2521 wake_up_interruptible(&priv->wait_command_queue);
2523 /* reassociate for ADHOC mode */
2524 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2525 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2528 iwl_mac_beacon_update(priv->hw, beacon);
2531 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2532 iwl_set_mode(priv, priv->iw_mode);
2537 queue_work(priv->workqueue, &priv->restart);
2540 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2542 static void __iwl3945_down(struct iwl_priv *priv)
2544 unsigned long flags;
2545 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2546 struct ieee80211_conf *conf = NULL;
2548 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2550 conf = ieee80211_get_hw_conf(priv->hw);
2553 set_bit(STATUS_EXIT_PENDING, &priv->status);
2555 iwl_clear_stations_table(priv);
2557 /* Unblock any waiting calls */
2558 wake_up_interruptible_all(&priv->wait_command_queue);
2560 /* Wipe out the EXIT_PENDING status bit if we are not actually
2561 * exiting the module */
2563 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2565 /* stop and reset the on-board processor */
2566 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2568 /* tell the device to stop sending interrupts */
2569 spin_lock_irqsave(&priv->lock, flags);
2570 iwl_disable_interrupts(priv);
2571 spin_unlock_irqrestore(&priv->lock, flags);
2572 iwl_synchronize_irq(priv);
2574 if (priv->mac80211_registered)
2575 ieee80211_stop_queues(priv->hw);
2577 /* If we have not previously called iwl3945_init() then
2578 * clear all bits but the RF Kill bits and return */
2579 if (!iwl_is_init(priv)) {
2580 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2582 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2583 STATUS_GEO_CONFIGURED |
2584 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2585 STATUS_EXIT_PENDING;
2589 /* ...otherwise clear out all the status bits but the RF Kill
2590 * bit and continue taking the NIC down. */
2591 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2593 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2594 STATUS_GEO_CONFIGURED |
2595 test_bit(STATUS_FW_ERROR, &priv->status) <<
2597 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2598 STATUS_EXIT_PENDING;
2600 iwl3945_hw_txq_ctx_stop(priv);
2601 iwl3945_hw_rxq_stop(priv);
2603 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2604 APMG_CLK_VAL_DMA_CLK_RQT);
2608 /* Stop the device, and put it in low power state */
2609 priv->cfg->ops->lib->apm_ops.stop(priv);
2612 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2614 if (priv->ibss_beacon)
2615 dev_kfree_skb(priv->ibss_beacon);
2616 priv->ibss_beacon = NULL;
2618 /* clear out any free frames */
2619 iwl3945_clear_free_frames(priv);
2622 static void iwl3945_down(struct iwl_priv *priv)
2624 mutex_lock(&priv->mutex);
2625 __iwl3945_down(priv);
2626 mutex_unlock(&priv->mutex);
2628 iwl3945_cancel_deferred_work(priv);
2631 #define MAX_HW_RESTARTS 5
2633 static int __iwl3945_up(struct iwl_priv *priv)
2637 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2638 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2642 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2643 IWL_ERR(priv, "ucode not available for device bring up\n");
2647 /* If platform's RF_KILL switch is NOT set to KILL */
2648 if (iwl_read32(priv, CSR_GP_CNTRL) &
2649 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2650 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2652 set_bit(STATUS_RF_KILL_HW, &priv->status);
2653 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2657 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2659 rc = iwl3945_hw_nic_init(priv);
2661 IWL_ERR(priv, "Unable to int nic\n");
2665 /* make sure rfkill handshake bits are cleared */
2666 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2667 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2668 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2670 /* clear (again), then enable host interrupts */
2671 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2672 iwl_enable_interrupts(priv);
2674 /* really make sure rfkill handshake bits are cleared */
2675 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2676 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2678 /* Copy original ucode data image from disk into backup cache.
2679 * This will be used to initialize the on-board processor's
2680 * data SRAM for a clean start when the runtime program first loads. */
2681 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2682 priv->ucode_data.len);
2684 /* We return success when we resume from suspend and rf_kill is on. */
2685 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2688 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2690 iwl_clear_stations_table(priv);
2692 /* load bootstrap state machine,
2693 * load bootstrap program into processor's memory,
2694 * prepare to load the "initialize" uCode */
2695 priv->cfg->ops->lib->load_ucode(priv);
2699 "Unable to set up bootstrap uCode: %d\n", rc);
2703 /* start card; "initialize" will load runtime ucode */
2704 iwl3945_nic_start(priv);
2706 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2711 set_bit(STATUS_EXIT_PENDING, &priv->status);
2712 __iwl3945_down(priv);
2713 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2715 /* tried to restart and config the device for as long as our
2716 * patience could withstand */
2717 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2722 /*****************************************************************************
2724 * Workqueue callbacks
2726 *****************************************************************************/
2728 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2730 struct iwl_priv *priv =
2731 container_of(data, struct iwl_priv, init_alive_start.work);
2733 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2736 mutex_lock(&priv->mutex);
2737 iwl3945_init_alive_start(priv);
2738 mutex_unlock(&priv->mutex);
2741 static void iwl3945_bg_alive_start(struct work_struct *data)
2743 struct iwl_priv *priv =
2744 container_of(data, struct iwl_priv, alive_start.work);
2746 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2749 mutex_lock(&priv->mutex);
2750 iwl3945_alive_start(priv);
2751 mutex_unlock(&priv->mutex);
2755 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2756 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2757 * *is* readable even when device has been SW_RESET into low power mode
2758 * (e.g. during RF KILL).
2760 static void iwl3945_rfkill_poll(struct work_struct *data)
2762 struct iwl_priv *priv =
2763 container_of(data, struct iwl_priv, rfkill_poll.work);
2764 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2765 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2766 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2768 if (new_rfkill != old_rfkill) {
2770 set_bit(STATUS_RF_KILL_HW, &priv->status);
2772 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2774 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2776 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2777 new_rfkill ? "disable radio" : "enable radio");
2780 /* Keep this running, even if radio now enabled. This will be
2781 * cancelled in mac_start() if system decides to start again */
2782 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2783 round_jiffies_relative(2 * HZ));
2787 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2788 static void iwl3945_bg_request_scan(struct work_struct *data)
2790 struct iwl_priv *priv =
2791 container_of(data, struct iwl_priv, request_scan);
2792 struct iwl_host_cmd cmd = {
2793 .id = REPLY_SCAN_CMD,
2794 .len = sizeof(struct iwl3945_scan_cmd),
2795 .flags = CMD_SIZE_HUGE,
2798 struct iwl3945_scan_cmd *scan;
2799 struct ieee80211_conf *conf = NULL;
2801 enum ieee80211_band band;
2802 bool is_active = false;
2804 conf = ieee80211_get_hw_conf(priv->hw);
2806 mutex_lock(&priv->mutex);
2808 cancel_delayed_work(&priv->scan_check);
2810 if (!iwl_is_ready(priv)) {
2811 IWL_WARN(priv, "request scan called when driver not ready.\n");
2815 /* Make sure the scan wasn't canceled before this queued work
2816 * was given the chance to run... */
2817 if (!test_bit(STATUS_SCANNING, &priv->status))
2820 /* This should never be called or scheduled if there is currently
2821 * a scan active in the hardware. */
2822 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2823 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2824 "Ignoring second request.\n");
2829 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2830 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2834 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2836 "Scan request while abort pending. Queuing.\n");
2840 if (iwl_is_rfkill(priv)) {
2841 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2845 if (!test_bit(STATUS_READY, &priv->status)) {
2847 "Scan request while uninitialized. Queuing.\n");
2851 if (!priv->scan_bands) {
2852 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2857 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2858 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2865 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2867 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2868 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2870 if (iwl_is_associated(priv)) {
2873 u32 suspend_time = 100;
2874 u32 scan_suspend_time = 100;
2875 unsigned long flags;
2877 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2879 spin_lock_irqsave(&priv->lock, flags);
2880 interval = priv->beacon_int;
2881 spin_unlock_irqrestore(&priv->lock, flags);
2883 scan->suspend_time = 0;
2884 scan->max_out_time = cpu_to_le32(200 * 1024);
2886 interval = suspend_time;
2888 * suspend time format:
2889 * 0-19: beacon interval in usec (time before exec.)
2891 * 24-31: number of beacons (suspend between channels)
2894 extra = (suspend_time / interval) << 24;
2895 scan_suspend_time = 0xFF0FFFFF &
2896 (extra | ((suspend_time % interval) * 1024));
2898 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2899 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2900 scan_suspend_time, interval);
2903 if (priv->scan_request->n_ssids) {
2905 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2906 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2907 /* always does wildcard anyway */
2908 if (!priv->scan_request->ssids[i].ssid_len)
2910 scan->direct_scan[p].id = WLAN_EID_SSID;
2911 scan->direct_scan[p].len =
2912 priv->scan_request->ssids[i].ssid_len;
2913 memcpy(scan->direct_scan[p].ssid,
2914 priv->scan_request->ssids[i].ssid,
2915 priv->scan_request->ssids[i].ssid_len);
2921 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2923 /* We don't build a direct scan probe request; the uCode will do
2924 * that based on the direct_mask added to each channel entry */
2925 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2926 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2927 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2929 /* flags + rate selection */
2931 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2932 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2933 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2934 scan->good_CRC_th = 0;
2935 band = IEEE80211_BAND_2GHZ;
2936 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2937 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2939 * If active scaning is requested but a certain channel
2940 * is marked passive, we can do active scanning if we
2941 * detect transmissions.
2943 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2944 band = IEEE80211_BAND_5GHZ;
2946 IWL_WARN(priv, "Invalid scan band count\n");
2950 scan->tx_cmd.len = cpu_to_le16(
2951 iwl_fill_probe_req(priv,
2952 (struct ieee80211_mgmt *)scan->data,
2953 priv->scan_request->ie,
2954 priv->scan_request->ie_len,
2955 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2957 /* select Rx antennas */
2958 scan->flags |= iwl3945_get_antenna_flags(priv);
2960 if (iwl_is_monitor_mode(priv))
2961 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
2963 scan->channel_count =
2964 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2965 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
2967 if (scan->channel_count == 0) {
2968 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2972 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2973 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2975 scan->len = cpu_to_le16(cmd.len);
2977 set_bit(STATUS_SCAN_HW, &priv->status);
2978 rc = iwl_send_cmd_sync(priv, &cmd);
2982 queue_delayed_work(priv->workqueue, &priv->scan_check,
2983 IWL_SCAN_CHECK_WATCHDOG);
2985 mutex_unlock(&priv->mutex);
2989 /* can not perform scan make sure we clear scanning
2990 * bits from status so next scan request can be performed.
2991 * if we dont clear scanning status bit here all next scan
2994 clear_bit(STATUS_SCAN_HW, &priv->status);
2995 clear_bit(STATUS_SCANNING, &priv->status);
2997 /* inform mac80211 scan aborted */
2998 queue_work(priv->workqueue, &priv->scan_completed);
2999 mutex_unlock(&priv->mutex);
3002 static void iwl3945_bg_up(struct work_struct *data)
3004 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3006 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3009 mutex_lock(&priv->mutex);
3011 mutex_unlock(&priv->mutex);
3014 static void iwl3945_bg_restart(struct work_struct *data)
3016 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3018 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3021 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3022 mutex_lock(&priv->mutex);
3025 mutex_unlock(&priv->mutex);
3027 ieee80211_restart_hw(priv->hw);
3030 queue_work(priv->workqueue, &priv->up);
3034 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3036 struct iwl_priv *priv =
3037 container_of(data, struct iwl_priv, rx_replenish);
3039 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3042 mutex_lock(&priv->mutex);
3043 iwl3945_rx_replenish(priv);
3044 mutex_unlock(&priv->mutex);
3047 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3049 void iwl3945_post_associate(struct iwl_priv *priv)
3052 struct ieee80211_conf *conf = NULL;
3054 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3055 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3060 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3061 priv->assoc_id, priv->active_rxon.bssid_addr);
3063 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3066 if (!priv->vif || !priv->is_open)
3069 iwl_scan_cancel_timeout(priv, 200);
3071 conf = ieee80211_get_hw_conf(priv->hw);
3073 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3074 iwlcore_commit_rxon(priv);
3076 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3077 iwl_setup_rxon_timing(priv);
3078 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3079 sizeof(priv->rxon_timing), &priv->rxon_timing);
3081 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3082 "Attempting to continue.\n");
3084 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3086 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3088 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3089 priv->assoc_id, priv->beacon_int);
3091 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3092 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3094 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3096 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3097 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3098 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3100 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3102 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3103 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3107 iwlcore_commit_rxon(priv);
3109 switch (priv->iw_mode) {
3110 case NL80211_IFTYPE_STATION:
3111 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3114 case NL80211_IFTYPE_ADHOC:
3117 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3118 iwl3945_sync_sta(priv, IWL_STA_ID,
3119 (priv->band == IEEE80211_BAND_5GHZ) ?
3120 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3122 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3123 iwl3945_send_beacon_cmd(priv);
3128 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3129 __func__, priv->iw_mode);
3133 iwl_activate_qos(priv, 0);
3135 /* we have just associated, don't start scan too early */
3136 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3139 /*****************************************************************************
3141 * mac80211 entry point functions
3143 *****************************************************************************/
3145 #define UCODE_READY_TIMEOUT (2 * HZ)
3147 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3149 struct iwl_priv *priv = hw->priv;
3152 IWL_DEBUG_MAC80211(priv, "enter\n");
3154 /* we should be verifying the device is ready to be opened */
3155 mutex_lock(&priv->mutex);
3157 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3158 * ucode filename and max sizes are card-specific. */
3160 if (!priv->ucode_code.len) {
3161 ret = iwl3945_read_ucode(priv);
3163 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3164 mutex_unlock(&priv->mutex);
3165 goto out_release_irq;
3169 ret = __iwl3945_up(priv);
3171 mutex_unlock(&priv->mutex);
3174 goto out_release_irq;
3176 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3178 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3179 * mac80211 will not be run successfully. */
3180 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3181 test_bit(STATUS_READY, &priv->status),
3182 UCODE_READY_TIMEOUT);
3184 if (!test_bit(STATUS_READY, &priv->status)) {
3186 "Wait for START_ALIVE timeout after %dms.\n",
3187 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3189 goto out_release_irq;
3193 /* ucode is running and will send rfkill notifications,
3194 * no need to poll the killswitch state anymore */
3195 cancel_delayed_work(&priv->rfkill_poll);
3197 iwl_led_start(priv);
3200 IWL_DEBUG_MAC80211(priv, "leave\n");
3205 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3209 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3211 struct iwl_priv *priv = hw->priv;
3213 IWL_DEBUG_MAC80211(priv, "enter\n");
3215 if (!priv->is_open) {
3216 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3222 if (iwl_is_ready_rf(priv)) {
3223 /* stop mac, cancel any scan request and clear
3224 * RXON_FILTER_ASSOC_MSK BIT
3226 mutex_lock(&priv->mutex);
3227 iwl_scan_cancel_timeout(priv, 100);
3228 mutex_unlock(&priv->mutex);
3233 flush_workqueue(priv->workqueue);
3235 /* start polling the killswitch state again */
3236 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3237 round_jiffies_relative(2 * HZ));
3239 IWL_DEBUG_MAC80211(priv, "leave\n");
3242 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3244 struct iwl_priv *priv = hw->priv;
3246 IWL_DEBUG_MAC80211(priv, "enter\n");
3248 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3249 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3251 if (iwl3945_tx_skb(priv, skb))
3252 dev_kfree_skb_any(skb);
3254 IWL_DEBUG_MAC80211(priv, "leave\n");
3255 return NETDEV_TX_OK;
3258 void iwl3945_config_ap(struct iwl_priv *priv)
3262 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3265 /* The following should be done only at AP bring up */
3266 if (!(iwl_is_associated(priv))) {
3268 /* RXON - unassoc (to set timing command) */
3269 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3270 iwlcore_commit_rxon(priv);
3273 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3274 iwl_setup_rxon_timing(priv);
3275 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3276 sizeof(priv->rxon_timing),
3277 &priv->rxon_timing);
3279 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3280 "Attempting to continue.\n");
3282 /* FIXME: what should be the assoc_id for AP? */
3283 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3284 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3285 priv->staging_rxon.flags |=
3286 RXON_FLG_SHORT_PREAMBLE_MSK;
3288 priv->staging_rxon.flags &=
3289 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3291 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3292 if (priv->assoc_capability &
3293 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3294 priv->staging_rxon.flags |=
3295 RXON_FLG_SHORT_SLOT_MSK;
3297 priv->staging_rxon.flags &=
3298 ~RXON_FLG_SHORT_SLOT_MSK;
3300 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3301 priv->staging_rxon.flags &=
3302 ~RXON_FLG_SHORT_SLOT_MSK;
3304 /* restore RXON assoc */
3305 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3306 iwlcore_commit_rxon(priv);
3307 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3309 iwl3945_send_beacon_cmd(priv);
3311 /* FIXME - we need to add code here to detect a totally new
3312 * configuration, reset the AP, unassoc, rxon timing, assoc,
3313 * clear sta table, add BCAST sta... */
3316 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3317 struct ieee80211_vif *vif,
3318 struct ieee80211_sta *sta,
3319 struct ieee80211_key_conf *key)
3321 struct iwl_priv *priv = hw->priv;
3324 u8 sta_id = IWL_INVALID_STATION;
3327 IWL_DEBUG_MAC80211(priv, "enter\n");
3329 if (iwl3945_mod_params.sw_crypto) {
3330 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3334 addr = sta ? sta->addr : iwl_bcast_addr;
3335 static_key = !iwl_is_associated(priv);
3338 sta_id = iwl_find_station(priv, addr);
3339 if (sta_id == IWL_INVALID_STATION) {
3340 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3346 mutex_lock(&priv->mutex);
3347 iwl_scan_cancel_timeout(priv, 100);
3348 mutex_unlock(&priv->mutex);
3353 ret = iwl3945_set_static_key(priv, key);
3355 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3356 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3360 ret = iwl3945_remove_static_key(priv);
3362 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3363 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3369 IWL_DEBUG_MAC80211(priv, "leave\n");
3374 /*****************************************************************************
3378 *****************************************************************************/
3380 #ifdef CONFIG_IWLWIFI_DEBUG
3383 * The following adds a new attribute to the sysfs representation
3384 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3385 * used for controlling the debug level.
3387 * See the level definitions in iwl for details.
3389 * The debug_level being managed using sysfs below is a per device debug
3390 * level that is used instead of the global debug level if it (the per
3391 * device debug level) is set.
3393 static ssize_t show_debug_level(struct device *d,
3394 struct device_attribute *attr, char *buf)
3396 struct iwl_priv *priv = dev_get_drvdata(d);
3397 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3399 static ssize_t store_debug_level(struct device *d,
3400 struct device_attribute *attr,
3401 const char *buf, size_t count)
3403 struct iwl_priv *priv = dev_get_drvdata(d);
3407 ret = strict_strtoul(buf, 0, &val);
3409 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3411 priv->debug_level = val;
3412 if (iwl_alloc_traffic_mem(priv))
3414 "Not enough memory to generate traffic log\n");
3416 return strnlen(buf, count);
3419 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3420 show_debug_level, store_debug_level);
3422 #endif /* CONFIG_IWLWIFI_DEBUG */
3424 static ssize_t show_temperature(struct device *d,
3425 struct device_attribute *attr, char *buf)
3427 struct iwl_priv *priv = dev_get_drvdata(d);
3429 if (!iwl_is_alive(priv))
3432 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3435 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3437 static ssize_t show_tx_power(struct device *d,
3438 struct device_attribute *attr, char *buf)
3440 struct iwl_priv *priv = dev_get_drvdata(d);
3441 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3444 static ssize_t store_tx_power(struct device *d,
3445 struct device_attribute *attr,
3446 const char *buf, size_t count)
3448 struct iwl_priv *priv = dev_get_drvdata(d);
3449 char *p = (char *)buf;
3452 val = simple_strtoul(p, &p, 10);
3454 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3456 iwl3945_hw_reg_set_txpower(priv, val);
3461 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3463 static ssize_t show_flags(struct device *d,
3464 struct device_attribute *attr, char *buf)
3466 struct iwl_priv *priv = dev_get_drvdata(d);
3468 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3471 static ssize_t store_flags(struct device *d,
3472 struct device_attribute *attr,
3473 const char *buf, size_t count)
3475 struct iwl_priv *priv = dev_get_drvdata(d);
3476 u32 flags = simple_strtoul(buf, NULL, 0);
3478 mutex_lock(&priv->mutex);
3479 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3480 /* Cancel any currently running scans... */
3481 if (iwl_scan_cancel_timeout(priv, 100))
3482 IWL_WARN(priv, "Could not cancel scan.\n");
3484 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3486 priv->staging_rxon.flags = cpu_to_le32(flags);
3487 iwlcore_commit_rxon(priv);
3490 mutex_unlock(&priv->mutex);
3495 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3497 static ssize_t show_filter_flags(struct device *d,
3498 struct device_attribute *attr, char *buf)
3500 struct iwl_priv *priv = dev_get_drvdata(d);
3502 return sprintf(buf, "0x%04X\n",
3503 le32_to_cpu(priv->active_rxon.filter_flags));
3506 static ssize_t store_filter_flags(struct device *d,
3507 struct device_attribute *attr,
3508 const char *buf, size_t count)
3510 struct iwl_priv *priv = dev_get_drvdata(d);
3511 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3513 mutex_lock(&priv->mutex);
3514 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3515 /* Cancel any currently running scans... */
3516 if (iwl_scan_cancel_timeout(priv, 100))
3517 IWL_WARN(priv, "Could not cancel scan.\n");
3519 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3520 "0x%04X\n", filter_flags);
3521 priv->staging_rxon.filter_flags =
3522 cpu_to_le32(filter_flags);
3523 iwlcore_commit_rxon(priv);
3526 mutex_unlock(&priv->mutex);
3531 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3532 store_filter_flags);
3534 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3536 static ssize_t show_measurement(struct device *d,
3537 struct device_attribute *attr, char *buf)
3539 struct iwl_priv *priv = dev_get_drvdata(d);
3540 struct iwl_spectrum_notification measure_report;
3541 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3542 u8 *data = (u8 *)&measure_report;
3543 unsigned long flags;
3545 spin_lock_irqsave(&priv->lock, flags);
3546 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3547 spin_unlock_irqrestore(&priv->lock, flags);
3550 memcpy(&measure_report, &priv->measure_report, size);
3551 priv->measurement_status = 0;
3552 spin_unlock_irqrestore(&priv->lock, flags);
3554 while (size && (PAGE_SIZE - len)) {
3555 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3556 PAGE_SIZE - len, 1);
3558 if (PAGE_SIZE - len)
3562 size -= min(size, 16U);
3568 static ssize_t store_measurement(struct device *d,
3569 struct device_attribute *attr,
3570 const char *buf, size_t count)
3572 struct iwl_priv *priv = dev_get_drvdata(d);
3573 struct ieee80211_measurement_params params = {
3574 .channel = le16_to_cpu(priv->active_rxon.channel),
3575 .start_time = cpu_to_le64(priv->last_tsf),
3576 .duration = cpu_to_le16(1),
3578 u8 type = IWL_MEASURE_BASIC;
3584 strncpy(buffer, buf, min(sizeof(buffer), count));
3585 channel = simple_strtoul(p, NULL, 0);
3587 params.channel = channel;
3590 while (*p && *p != ' ')
3593 type = simple_strtoul(p + 1, NULL, 0);
3596 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3597 "channel %d (for '%s')\n", type, params.channel, buf);
3598 iwl3945_get_measurement(priv, ¶ms, type);
3603 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3604 show_measurement, store_measurement);
3605 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3607 static ssize_t store_retry_rate(struct device *d,
3608 struct device_attribute *attr,
3609 const char *buf, size_t count)
3611 struct iwl_priv *priv = dev_get_drvdata(d);
3613 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3614 if (priv->retry_rate <= 0)
3615 priv->retry_rate = 1;
3620 static ssize_t show_retry_rate(struct device *d,
3621 struct device_attribute *attr, char *buf)
3623 struct iwl_priv *priv = dev_get_drvdata(d);
3624 return sprintf(buf, "%d", priv->retry_rate);
3627 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3631 static ssize_t show_channels(struct device *d,
3632 struct device_attribute *attr, char *buf)
3634 /* all this shit doesn't belong into sysfs anyway */
3638 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3640 static ssize_t show_statistics(struct device *d,
3641 struct device_attribute *attr, char *buf)
3643 struct iwl_priv *priv = dev_get_drvdata(d);
3644 u32 size = sizeof(struct iwl3945_notif_statistics);
3645 u32 len = 0, ofs = 0;
3646 u8 *data = (u8 *)&priv->statistics_39;
3649 if (!iwl_is_alive(priv))
3652 mutex_lock(&priv->mutex);
3653 rc = iwl_send_statistics_request(priv, 0);
3654 mutex_unlock(&priv->mutex);
3658 "Error sending statistics request: 0x%08X\n", rc);
3662 while (size && (PAGE_SIZE - len)) {
3663 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3664 PAGE_SIZE - len, 1);
3666 if (PAGE_SIZE - len)
3670 size -= min(size, 16U);
3676 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3678 static ssize_t show_antenna(struct device *d,
3679 struct device_attribute *attr, char *buf)
3681 struct iwl_priv *priv = dev_get_drvdata(d);
3683 if (!iwl_is_alive(priv))
3686 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3689 static ssize_t store_antenna(struct device *d,
3690 struct device_attribute *attr,
3691 const char *buf, size_t count)
3693 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3699 if (sscanf(buf, "%1i", &ant) != 1) {
3700 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3704 if ((ant >= 0) && (ant <= 2)) {
3705 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3706 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3708 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3714 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3716 static ssize_t show_status(struct device *d,
3717 struct device_attribute *attr, char *buf)
3719 struct iwl_priv *priv = dev_get_drvdata(d);
3720 if (!iwl_is_alive(priv))
3722 return sprintf(buf, "0x%08x\n", (int)priv->status);
3725 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3727 static ssize_t dump_error_log(struct device *d,
3728 struct device_attribute *attr,
3729 const char *buf, size_t count)
3731 struct iwl_priv *priv = dev_get_drvdata(d);
3732 char *p = (char *)buf;
3735 iwl3945_dump_nic_error_log(priv);
3737 return strnlen(buf, count);
3740 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3742 /*****************************************************************************
3744 * driver setup and tear down
3746 *****************************************************************************/
3748 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3750 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3752 init_waitqueue_head(&priv->wait_command_queue);
3754 INIT_WORK(&priv->up, iwl3945_bg_up);
3755 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3756 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3757 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3758 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3759 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3760 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3761 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3762 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3763 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3764 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3766 iwl3945_hw_setup_deferred_work(priv);
3768 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3769 iwl3945_irq_tasklet, (unsigned long)priv);
3772 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3774 iwl3945_hw_cancel_deferred_work(priv);
3776 cancel_delayed_work_sync(&priv->init_alive_start);
3777 cancel_delayed_work(&priv->scan_check);
3778 cancel_delayed_work(&priv->alive_start);
3779 cancel_work_sync(&priv->beacon_update);
3782 static struct attribute *iwl3945_sysfs_entries[] = {
3783 &dev_attr_antenna.attr,
3784 &dev_attr_channels.attr,
3785 &dev_attr_dump_errors.attr,
3786 &dev_attr_flags.attr,
3787 &dev_attr_filter_flags.attr,
3788 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3789 &dev_attr_measurement.attr,
3791 &dev_attr_retry_rate.attr,
3792 &dev_attr_statistics.attr,
3793 &dev_attr_status.attr,
3794 &dev_attr_temperature.attr,
3795 &dev_attr_tx_power.attr,
3796 #ifdef CONFIG_IWLWIFI_DEBUG
3797 &dev_attr_debug_level.attr,
3802 static struct attribute_group iwl3945_attribute_group = {
3803 .name = NULL, /* put in device directory */
3804 .attrs = iwl3945_sysfs_entries,
3807 static struct ieee80211_ops iwl3945_hw_ops = {
3808 .tx = iwl3945_mac_tx,
3809 .start = iwl3945_mac_start,
3810 .stop = iwl3945_mac_stop,
3811 .add_interface = iwl_mac_add_interface,
3812 .remove_interface = iwl_mac_remove_interface,
3813 .config = iwl_mac_config,
3814 .configure_filter = iwl_configure_filter,
3815 .set_key = iwl3945_mac_set_key,
3816 .get_tx_stats = iwl_mac_get_tx_stats,
3817 .conf_tx = iwl_mac_conf_tx,
3818 .reset_tsf = iwl_mac_reset_tsf,
3819 .bss_info_changed = iwl_bss_info_changed,
3820 .hw_scan = iwl_mac_hw_scan
3823 static int iwl3945_init_drv(struct iwl_priv *priv)
3826 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3828 priv->retry_rate = 1;
3829 priv->ibss_beacon = NULL;
3831 spin_lock_init(&priv->lock);
3832 spin_lock_init(&priv->sta_lock);
3833 spin_lock_init(&priv->hcmd_lock);
3835 INIT_LIST_HEAD(&priv->free_frames);
3837 mutex_init(&priv->mutex);
3839 /* Clear the driver's (not device's) station table */
3840 iwl_clear_stations_table(priv);
3842 priv->ieee_channels = NULL;
3843 priv->ieee_rates = NULL;
3844 priv->band = IEEE80211_BAND_2GHZ;
3846 priv->iw_mode = NL80211_IFTYPE_STATION;
3848 iwl_reset_qos(priv);
3850 priv->qos_data.qos_active = 0;
3851 priv->qos_data.qos_cap.val = 0;
3853 priv->rates_mask = IWL_RATES_MASK;
3854 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3856 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3857 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3862 ret = iwl_init_channel_map(priv);
3864 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3868 /* Set up txpower settings in driver for all channels */
3869 if (iwl3945_txpower_set_from_eeprom(priv)) {
3871 goto err_free_channel_map;
3874 ret = iwlcore_init_geos(priv);
3876 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3877 goto err_free_channel_map;
3879 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3883 err_free_channel_map:
3884 iwl_free_channel_map(priv);
3889 static int iwl3945_setup_mac(struct iwl_priv *priv)
3892 struct ieee80211_hw *hw = priv->hw;
3894 hw->rate_control_algorithm = "iwl-3945-rs";
3895 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3897 /* Tell mac80211 our characteristics */
3898 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3899 IEEE80211_HW_NOISE_DBM |
3900 IEEE80211_HW_SPECTRUM_MGMT |
3901 IEEE80211_HW_SUPPORTS_PS |
3902 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3904 hw->wiphy->interface_modes =
3905 BIT(NL80211_IFTYPE_STATION) |
3906 BIT(NL80211_IFTYPE_ADHOC);
3908 hw->wiphy->custom_regulatory = true;
3910 /* Firmware does not support this */
3911 hw->wiphy->disable_beacon_hints = true;
3913 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3914 /* we create the 802.11 header and a zero-length SSID element */
3915 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3917 /* Default value; 4 EDCA QOS priorities */
3920 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3921 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3922 &priv->bands[IEEE80211_BAND_2GHZ];
3924 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3925 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3926 &priv->bands[IEEE80211_BAND_5GHZ];
3928 ret = ieee80211_register_hw(priv->hw);
3930 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3933 priv->mac80211_registered = 1;
3938 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3941 struct iwl_priv *priv;
3942 struct ieee80211_hw *hw;
3943 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3944 struct iwl3945_eeprom *eeprom;
3945 unsigned long flags;
3947 /***********************
3948 * 1. Allocating HW data
3949 * ********************/
3951 /* mac80211 allocates memory for this device instance, including
3952 * space for this driver's private structure */
3953 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3955 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3960 SET_IEEE80211_DEV(hw, &pdev->dev);
3963 * Disabling hardware scan means that mac80211 will perform scans
3964 * "the hard way", rather than using device's scan.
3966 if (iwl3945_mod_params.disable_hw_scan) {
3967 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3968 iwl3945_hw_ops.hw_scan = NULL;
3972 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3974 priv->pci_dev = pdev;
3975 priv->inta_mask = CSR_INI_SET_MASK;
3977 #ifdef CONFIG_IWLWIFI_DEBUG
3978 atomic_set(&priv->restrict_refcnt, 0);
3980 if (iwl_alloc_traffic_mem(priv))
3981 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3983 /***************************
3984 * 2. Initializing PCI bus
3985 * *************************/
3986 if (pci_enable_device(pdev)) {
3988 goto out_ieee80211_free_hw;
3991 pci_set_master(pdev);
3993 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3995 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3997 IWL_WARN(priv, "No suitable DMA available.\n");
3998 goto out_pci_disable_device;
4001 pci_set_drvdata(pdev, priv);
4002 err = pci_request_regions(pdev, DRV_NAME);
4004 goto out_pci_disable_device;
4006 /***********************
4007 * 3. Read REV Register
4008 * ********************/
4009 priv->hw_base = pci_iomap(pdev, 0, 0);
4010 if (!priv->hw_base) {
4012 goto out_pci_release_regions;
4015 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4016 (unsigned long long) pci_resource_len(pdev, 0));
4017 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4019 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4020 * PCI Tx retries from interfering with C3 CPU state */
4021 pci_write_config_byte(pdev, 0x41, 0x00);
4023 /* this spin lock will be used in apm_ops.init and EEPROM access
4024 * we should init now
4026 spin_lock_init(&priv->reg_lock);
4028 /***********************
4030 * ********************/
4032 /* Read the EEPROM */
4033 err = iwl_eeprom_init(priv);
4035 IWL_ERR(priv, "Unable to init EEPROM\n");
4038 /* MAC Address location in EEPROM same for 3945/4965 */
4039 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4040 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4041 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4042 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4044 /***********************
4045 * 5. Setup HW Constants
4046 * ********************/
4047 /* Device-specific setup */
4048 if (iwl3945_hw_set_hw_params(priv)) {
4049 IWL_ERR(priv, "failed to set hw settings\n");
4050 goto out_eeprom_free;
4053 /***********************
4055 * ********************/
4057 err = iwl3945_init_drv(priv);
4059 IWL_ERR(priv, "initializing driver failed\n");
4060 goto out_unset_hw_params;
4063 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4066 /***********************
4068 * ********************/
4070 spin_lock_irqsave(&priv->lock, flags);
4071 iwl_disable_interrupts(priv);
4072 spin_unlock_irqrestore(&priv->lock, flags);
4074 pci_enable_msi(priv->pci_dev);
4076 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4077 IRQF_SHARED, DRV_NAME, priv);
4079 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4080 goto out_disable_msi;
4083 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4085 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4086 goto out_release_irq;
4089 iwl_set_rxon_channel(priv,
4090 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4091 iwl3945_setup_deferred_work(priv);
4092 iwl3945_setup_rx_handlers(priv);
4093 iwl_power_initialize(priv);
4095 /*********************************
4096 * 8. Setup and Register mac80211
4097 * *******************************/
4099 iwl_enable_interrupts(priv);
4101 err = iwl3945_setup_mac(priv);
4103 goto out_remove_sysfs;
4105 err = iwl_dbgfs_register(priv, DRV_NAME);
4107 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4109 /* Start monitoring the killswitch */
4110 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4116 destroy_workqueue(priv->workqueue);
4117 priv->workqueue = NULL;
4118 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4120 free_irq(priv->pci_dev->irq, priv);
4122 pci_disable_msi(priv->pci_dev);
4123 iwlcore_free_geos(priv);
4124 iwl_free_channel_map(priv);
4125 out_unset_hw_params:
4126 iwl3945_unset_hw_params(priv);
4128 iwl_eeprom_free(priv);
4130 pci_iounmap(pdev, priv->hw_base);
4131 out_pci_release_regions:
4132 pci_release_regions(pdev);
4133 out_pci_disable_device:
4134 pci_set_drvdata(pdev, NULL);
4135 pci_disable_device(pdev);
4136 out_ieee80211_free_hw:
4137 iwl_free_traffic_mem(priv);
4138 ieee80211_free_hw(priv->hw);
4143 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4145 struct iwl_priv *priv = pci_get_drvdata(pdev);
4146 unsigned long flags;
4151 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4153 iwl_dbgfs_unregister(priv);
4155 set_bit(STATUS_EXIT_PENDING, &priv->status);
4157 if (priv->mac80211_registered) {
4158 ieee80211_unregister_hw(priv->hw);
4159 priv->mac80211_registered = 0;
4165 * Make sure device is reset to low power before unloading driver.
4166 * This may be redundant with iwl_down(), but there are paths to
4167 * run iwl_down() without calling apm_ops.stop(), and there are
4168 * paths to avoid running iwl_down() at all before leaving driver.
4169 * This (inexpensive) call *makes sure* device is reset.
4171 priv->cfg->ops->lib->apm_ops.stop(priv);
4173 /* make sure we flush any pending irq or
4174 * tasklet for the driver
4176 spin_lock_irqsave(&priv->lock, flags);
4177 iwl_disable_interrupts(priv);
4178 spin_unlock_irqrestore(&priv->lock, flags);
4180 iwl_synchronize_irq(priv);
4182 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4184 cancel_delayed_work_sync(&priv->rfkill_poll);
4186 iwl3945_dealloc_ucode_pci(priv);
4189 iwl3945_rx_queue_free(priv, &priv->rxq);
4190 iwl3945_hw_txq_ctx_free(priv);
4192 iwl3945_unset_hw_params(priv);
4193 iwl_clear_stations_table(priv);
4195 /*netif_stop_queue(dev); */
4196 flush_workqueue(priv->workqueue);
4198 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4199 * priv->workqueue... so we can't take down the workqueue
4201 destroy_workqueue(priv->workqueue);
4202 priv->workqueue = NULL;
4203 iwl_free_traffic_mem(priv);
4205 free_irq(pdev->irq, priv);
4206 pci_disable_msi(pdev);
4208 pci_iounmap(pdev, priv->hw_base);
4209 pci_release_regions(pdev);
4210 pci_disable_device(pdev);
4211 pci_set_drvdata(pdev, NULL);
4213 iwl_free_channel_map(priv);
4214 iwlcore_free_geos(priv);
4216 if (priv->ibss_beacon)
4217 dev_kfree_skb(priv->ibss_beacon);
4219 ieee80211_free_hw(priv->hw);
4223 /*****************************************************************************
4225 * driver and module entry point
4227 *****************************************************************************/
4229 static struct pci_driver iwl3945_driver = {
4231 .id_table = iwl3945_hw_card_ids,
4232 .probe = iwl3945_pci_probe,
4233 .remove = __devexit_p(iwl3945_pci_remove),
4235 .suspend = iwl_pci_suspend,
4236 .resume = iwl_pci_resume,
4240 static int __init iwl3945_init(void)
4244 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4245 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4247 ret = iwl3945_rate_control_register();
4249 printk(KERN_ERR DRV_NAME
4250 "Unable to register rate control algorithm: %d\n", ret);
4254 ret = pci_register_driver(&iwl3945_driver);
4256 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4257 goto error_register;
4263 iwl3945_rate_control_unregister();
4267 static void __exit iwl3945_exit(void)
4269 pci_unregister_driver(&iwl3945_driver);
4270 iwl3945_rate_control_unregister();
4273 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4275 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4276 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4277 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4278 MODULE_PARM_DESC(swcrypto,
4279 "using software crypto (default 1 [software])\n");
4280 #ifdef CONFIG_IWLWIFI_DEBUG
4281 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4282 MODULE_PARM_DESC(debug, "debug output mask");
4284 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4286 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4287 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4288 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4290 module_exit(iwl3945_exit);
4291 module_init(iwl3945_init);