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 = {
91 .num_of_queues = IWL39_NUM_QUEUES, /* Not used */
94 /* the rest are 0 by default */
98 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
99 * @priv: eeprom and antenna fields are used to determine antenna flags
101 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
102 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
104 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
105 * IWL_ANTENNA_MAIN - Force MAIN antenna
106 * IWL_ANTENNA_AUX - Force AUX antenna
108 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
110 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
112 switch (iwl3945_mod_params.antenna) {
113 case IWL_ANTENNA_DIVERSITY:
116 case IWL_ANTENNA_MAIN:
117 if (eeprom->antenna_switch_type)
118 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
119 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
121 case IWL_ANTENNA_AUX:
122 if (eeprom->antenna_switch_type)
123 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
124 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
127 /* bad antenna selector value */
128 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
129 iwl3945_mod_params.antenna);
131 return 0; /* "diversity" is default if error */
134 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
135 struct ieee80211_key_conf *keyconf,
139 __le16 key_flags = 0;
142 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
143 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
145 if (sta_id == priv->hw_params.bcast_sta_id)
146 key_flags |= STA_KEY_MULTICAST_MSK;
148 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
149 keyconf->hw_key_idx = keyconf->keyidx;
150 key_flags &= ~STA_KEY_FLG_INVALID;
152 spin_lock_irqsave(&priv->sta_lock, flags);
153 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
154 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
155 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
158 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
161 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
162 == STA_KEY_FLG_NO_ENC)
163 priv->stations[sta_id].sta.key.key_offset =
164 iwl_get_free_ucode_key_index(priv);
165 /* else, we are overriding an existing key => no need to allocated room
168 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
169 "no space for a new key");
171 priv->stations[sta_id].sta.key.key_flags = key_flags;
172 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
173 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
175 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
177 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
179 spin_unlock_irqrestore(&priv->sta_lock, flags);
184 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
185 struct ieee80211_key_conf *keyconf,
191 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
192 struct ieee80211_key_conf *keyconf,
198 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
202 spin_lock_irqsave(&priv->sta_lock, flags);
203 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
204 memset(&priv->stations[sta_id].sta.key, 0,
205 sizeof(struct iwl4965_keyinfo));
206 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
207 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
208 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
209 spin_unlock_irqrestore(&priv->sta_lock, flags);
211 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
212 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
216 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
217 struct ieee80211_key_conf *keyconf, u8 sta_id)
221 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
223 switch (keyconf->alg) {
225 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
228 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
231 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
234 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
238 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
239 keyconf->alg, keyconf->keylen, keyconf->keyidx,
245 static int iwl3945_remove_static_key(struct iwl_priv *priv)
247 int ret = -EOPNOTSUPP;
252 static int iwl3945_set_static_key(struct iwl_priv *priv,
253 struct ieee80211_key_conf *key)
255 if (key->alg == ALG_WEP)
258 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
262 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
264 struct list_head *element;
266 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
269 while (!list_empty(&priv->free_frames)) {
270 element = priv->free_frames.next;
272 kfree(list_entry(element, struct iwl3945_frame, list));
273 priv->frames_count--;
276 if (priv->frames_count) {
277 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
279 priv->frames_count = 0;
283 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
285 struct iwl3945_frame *frame;
286 struct list_head *element;
287 if (list_empty(&priv->free_frames)) {
288 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
290 IWL_ERR(priv, "Could not allocate frame!\n");
294 priv->frames_count++;
298 element = priv->free_frames.next;
300 return list_entry(element, struct iwl3945_frame, list);
303 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
305 memset(frame, 0, sizeof(*frame));
306 list_add(&frame->list, &priv->free_frames);
309 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
310 struct ieee80211_hdr *hdr,
314 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
315 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
316 (priv->iw_mode != NL80211_IFTYPE_AP)))
319 if (priv->ibss_beacon->len > left)
322 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
324 return priv->ibss_beacon->len;
327 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
329 struct iwl3945_frame *frame;
330 unsigned int frame_size;
334 frame = iwl3945_get_free_frame(priv);
337 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
342 rate = iwl_rate_get_lowest_plcp(priv);
344 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
346 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
349 iwl3945_free_frame(priv, frame);
354 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
356 if (priv->shared_virt)
357 pci_free_consistent(priv->pci_dev,
358 sizeof(struct iwl3945_shared),
363 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
364 struct ieee80211_tx_info *info,
365 struct iwl_device_cmd *cmd,
366 struct sk_buff *skb_frag,
369 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
370 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
372 switch (keyinfo->alg) {
374 tx->sec_ctl = TX_CMD_SEC_CCM;
375 memcpy(tx->key, keyinfo->key, keyinfo->keylen);
376 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
383 tx->sec_ctl = TX_CMD_SEC_WEP |
384 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
386 if (keyinfo->keylen == 13)
387 tx->sec_ctl |= TX_CMD_SEC_KEY128;
389 memcpy(&tx->key[3], keyinfo->key, keyinfo->keylen);
391 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
392 "with key %d\n", info->control.hw_key->hw_key_idx);
396 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
402 * handle build REPLY_TX command notification.
404 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
405 struct iwl_device_cmd *cmd,
406 struct ieee80211_tx_info *info,
407 struct ieee80211_hdr *hdr, u8 std_id)
409 struct iwl3945_tx_cmd *tx = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
410 __le32 tx_flags = tx->tx_flags;
411 __le16 fc = hdr->frame_control;
412 u8 rc_flags = info->control.rates[0].flags;
414 tx->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
415 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
416 tx_flags |= TX_CMD_FLG_ACK_MSK;
417 if (ieee80211_is_mgmt(fc))
418 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
419 if (ieee80211_is_probe_resp(fc) &&
420 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
421 tx_flags |= TX_CMD_FLG_TSF_MSK;
423 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
424 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
428 if (ieee80211_has_morefrags(fc))
429 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
431 if (ieee80211_is_data_qos(fc)) {
432 u8 *qc = ieee80211_get_qos_ctl(hdr);
433 tx->tid_tspec = qc[0] & 0xf;
434 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
436 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
439 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS) {
440 tx_flags |= TX_CMD_FLG_RTS_MSK;
441 tx_flags &= ~TX_CMD_FLG_CTS_MSK;
442 } else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT) {
443 tx_flags &= ~TX_CMD_FLG_RTS_MSK;
444 tx_flags |= TX_CMD_FLG_CTS_MSK;
447 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
448 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
450 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
451 if (ieee80211_is_mgmt(fc)) {
452 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
453 tx->timeout.pm_frame_timeout = cpu_to_le16(3);
455 tx->timeout.pm_frame_timeout = cpu_to_le16(2);
457 tx->timeout.pm_frame_timeout = 0;
458 #ifdef CONFIG_IWLWIFI_LEDS
459 priv->rxtxpackets += le16_to_cpu(cmd->cmd.tx.len);
464 tx->tx_flags = tx_flags;
465 tx->next_frame_len = 0;
469 * start REPLY_TX command process
471 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
473 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
474 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
475 struct iwl3945_tx_cmd *tx;
476 struct iwl_tx_queue *txq = NULL;
477 struct iwl_queue *q = NULL;
478 struct iwl_device_cmd *out_cmd;
479 struct iwl_cmd_meta *out_meta;
480 dma_addr_t phys_addr;
481 dma_addr_t txcmd_phys;
482 int txq_id = skb_get_queue_mapping(skb);
483 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
490 u8 wait_write_ptr = 0;
495 spin_lock_irqsave(&priv->lock, flags);
496 if (iwl_is_rfkill(priv)) {
497 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
501 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
502 IWL_ERR(priv, "ERROR: No TX rate available.\n");
506 unicast = !is_multicast_ether_addr(hdr->addr1);
509 fc = hdr->frame_control;
511 #ifdef CONFIG_IWLWIFI_DEBUG
512 if (ieee80211_is_auth(fc))
513 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
514 else if (ieee80211_is_assoc_req(fc))
515 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
516 else if (ieee80211_is_reassoc_req(fc))
517 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
520 /* drop all non-injected data frame if we are not associated */
521 if (ieee80211_is_data(fc) &&
522 !(info->flags & IEEE80211_TX_CTL_INJECTED) &&
523 (!iwl_is_associated(priv) ||
524 ((priv->iw_mode == NL80211_IFTYPE_STATION) && !priv->assoc_id))) {
525 IWL_DEBUG_DROP(priv, "Dropping - !iwl_is_associated\n");
529 spin_unlock_irqrestore(&priv->lock, flags);
531 hdr_len = ieee80211_hdrlen(fc);
533 /* Find (or create) index into station table for destination station */
534 if (info->flags & IEEE80211_TX_CTL_INJECTED)
535 sta_id = priv->hw_params.bcast_sta_id;
537 sta_id = iwl_get_sta_id(priv, hdr);
538 if (sta_id == IWL_INVALID_STATION) {
539 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
544 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
546 if (ieee80211_is_data_qos(fc)) {
547 qc = ieee80211_get_qos_ctl(hdr);
548 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
549 if (unlikely(tid >= MAX_TID_COUNT))
551 seq_number = priv->stations[sta_id].tid[tid].seq_number &
553 hdr->seq_ctrl = cpu_to_le16(seq_number) |
555 cpu_to_le16(IEEE80211_SCTL_FRAG));
559 /* Descriptor for chosen Tx queue */
560 txq = &priv->txq[txq_id];
563 spin_lock_irqsave(&priv->lock, flags);
565 idx = get_cmd_index(q, q->write_ptr, 0);
567 /* Set up driver data for this TFD */
568 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
569 txq->txb[q->write_ptr].skb[0] = skb;
571 /* Init first empty entry in queue's array of Tx/cmd buffers */
572 out_cmd = txq->cmd[idx];
573 out_meta = &txq->meta[idx];
574 tx = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
575 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
576 memset(tx, 0, sizeof(*tx));
579 * Set up the Tx-command (not MAC!) header.
580 * Store the chosen Tx queue and TFD index within the sequence field;
581 * after Tx, uCode's Tx response will return this value so driver can
582 * locate the frame within the tx queue and do post-tx processing.
584 out_cmd->hdr.cmd = REPLY_TX;
585 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
586 INDEX_TO_SEQ(q->write_ptr)));
588 /* Copy MAC header from skb into command buffer */
589 memcpy(tx->hdr, hdr, hdr_len);
592 if (info->control.hw_key)
593 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
595 /* TODO need this for burst mode later on */
596 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
598 /* set is_hcca to 0; it probably will never be implemented */
599 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
601 /* Total # bytes to be transmitted */
603 tx->len = cpu_to_le16(len);
605 iwl_dbg_log_tx_data_frame(priv, len, hdr);
606 iwl_update_stats(priv, true, fc, len);
607 tx->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
608 tx->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
610 if (!ieee80211_has_morefrags(hdr->frame_control)) {
611 txq->need_update = 1;
613 priv->stations[sta_id].tid[tid].seq_number = seq_number;
616 txq->need_update = 0;
619 IWL_DEBUG_TX(priv, "sequence nr = 0X%x \n",
620 le16_to_cpu(out_cmd->hdr.sequence));
621 IWL_DEBUG_TX(priv, "tx_flags = 0X%x \n", le32_to_cpu(tx->tx_flags));
622 iwl_print_hex_dump(priv, IWL_DL_TX, tx, sizeof(*tx));
623 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx->hdr,
624 ieee80211_hdrlen(fc));
627 * Use the first empty entry in this queue's command buffer array
628 * to contain the Tx command and MAC header concatenated together
629 * (payload data will be in another buffer).
630 * Size of this varies, due to varying MAC header length.
631 * If end is not dword aligned, we'll have 2 extra bytes at the end
632 * of the MAC header (device reads on dword boundaries).
633 * We'll tell device about this padding later.
635 len = sizeof(struct iwl3945_tx_cmd) +
636 sizeof(struct iwl_cmd_header) + hdr_len;
639 len = (len + 3) & ~3;
646 /* Physical address of this Tx command's header (not MAC header!),
647 * within command buffer array. */
648 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
649 len, PCI_DMA_TODEVICE);
650 /* we do not map meta data ... so we can safely access address to
651 * provide to unmap command*/
652 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
653 pci_unmap_len_set(out_meta, len, len);
655 /* Add buffer containing Tx command and MAC(!) header to TFD's
657 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
658 txcmd_phys, len, 1, 0);
661 /* Set up TFD's 2nd entry to point directly to remainder of skb,
662 * if any (802.11 null frames have no payload). */
663 len = skb->len - hdr_len;
665 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
666 len, PCI_DMA_TODEVICE);
667 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
673 /* Tell device the write index *just past* this latest filled TFD */
674 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
675 rc = iwl_txq_update_write_ptr(priv, txq);
676 spin_unlock_irqrestore(&priv->lock, flags);
681 if ((iwl_queue_space(q) < q->high_mark)
682 && priv->mac80211_registered) {
683 if (wait_write_ptr) {
684 spin_lock_irqsave(&priv->lock, flags);
685 txq->need_update = 1;
686 iwl_txq_update_write_ptr(priv, txq);
687 spin_unlock_irqrestore(&priv->lock, flags);
690 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
696 spin_unlock_irqrestore(&priv->lock, flags);
701 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
703 #include "iwl-spectrum.h"
705 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
706 #define BEACON_TIME_MASK_HIGH 0xFF000000
707 #define TIME_UNIT 1024
710 * extended beacon time format
711 * time in usec will be changed into a 32-bit value in 8:24 format
712 * the high 1 byte is the beacon counts
713 * the lower 3 bytes is the time in usec within one beacon interval
716 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
720 u32 interval = beacon_interval * 1024;
722 if (!interval || !usec)
725 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
726 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
728 return (quot << 24) + rem;
731 /* base is usually what we get from ucode with each received frame,
732 * the same as HW timer counter counting down
735 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
737 u32 base_low = base & BEACON_TIME_MASK_LOW;
738 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
739 u32 interval = beacon_interval * TIME_UNIT;
740 u32 res = (base & BEACON_TIME_MASK_HIGH) +
741 (addon & BEACON_TIME_MASK_HIGH);
743 if (base_low > addon_low)
744 res += base_low - addon_low;
745 else if (base_low < addon_low) {
746 res += interval + base_low - addon_low;
751 return cpu_to_le32(res);
754 static int iwl3945_get_measurement(struct iwl_priv *priv,
755 struct ieee80211_measurement_params *params,
758 struct iwl_spectrum_cmd spectrum;
759 struct iwl_rx_packet *res;
760 struct iwl_host_cmd cmd = {
761 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
762 .data = (void *)&spectrum,
763 .flags = CMD_WANT_SKB,
765 u32 add_time = le64_to_cpu(params->start_time);
767 int spectrum_resp_status;
768 int duration = le16_to_cpu(params->duration);
770 if (iwl_is_associated(priv))
772 iwl3945_usecs_to_beacons(
773 le64_to_cpu(params->start_time) - priv->last_tsf,
774 le16_to_cpu(priv->rxon_timing.beacon_interval));
776 memset(&spectrum, 0, sizeof(spectrum));
778 spectrum.channel_count = cpu_to_le16(1);
780 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
781 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
782 cmd.len = sizeof(spectrum);
783 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
785 if (iwl_is_associated(priv))
786 spectrum.start_time =
787 iwl3945_add_beacon_time(priv->last_beacon_time,
789 le16_to_cpu(priv->rxon_timing.beacon_interval));
791 spectrum.start_time = 0;
793 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
794 spectrum.channels[0].channel = params->channel;
795 spectrum.channels[0].type = type;
796 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
797 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
798 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
800 rc = iwl_send_cmd_sync(priv, &cmd);
804 res = (struct iwl_rx_packet *)cmd.reply_skb->data;
805 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
806 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
810 spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
811 switch (spectrum_resp_status) {
812 case 0: /* Command will be handled */
813 if (res->u.spectrum.id != 0xff) {
814 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
816 priv->measurement_status &= ~MEASUREMENT_READY;
818 priv->measurement_status |= MEASUREMENT_ACTIVE;
822 case 1: /* Command will not be handled */
827 dev_kfree_skb_any(cmd.reply_skb);
833 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
834 struct iwl_rx_mem_buffer *rxb)
836 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
837 struct iwl_alive_resp *palive;
838 struct delayed_work *pwork;
840 palive = &pkt->u.alive_frame;
842 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
844 palive->is_valid, palive->ver_type,
845 palive->ver_subtype);
847 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
848 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
849 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
850 sizeof(struct iwl_alive_resp));
851 pwork = &priv->init_alive_start;
853 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
854 memcpy(&priv->card_alive, &pkt->u.alive_frame,
855 sizeof(struct iwl_alive_resp));
856 pwork = &priv->alive_start;
857 iwl3945_disable_events(priv);
860 /* We delay the ALIVE response by 5ms to
861 * give the HW RF Kill time to activate... */
862 if (palive->is_valid == UCODE_VALID_OK)
863 queue_delayed_work(priv->workqueue, pwork,
864 msecs_to_jiffies(5));
866 IWL_WARN(priv, "uCode did not respond OK.\n");
869 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
870 struct iwl_rx_mem_buffer *rxb)
872 #ifdef CONFIG_IWLWIFI_DEBUG
873 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
876 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
880 static void iwl3945_bg_beacon_update(struct work_struct *work)
882 struct iwl_priv *priv =
883 container_of(work, struct iwl_priv, beacon_update);
884 struct sk_buff *beacon;
886 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
887 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
890 IWL_ERR(priv, "update beacon failed\n");
894 mutex_lock(&priv->mutex);
895 /* new beacon skb is allocated every time; dispose previous.*/
896 if (priv->ibss_beacon)
897 dev_kfree_skb(priv->ibss_beacon);
899 priv->ibss_beacon = beacon;
900 mutex_unlock(&priv->mutex);
902 iwl3945_send_beacon_cmd(priv);
905 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
906 struct iwl_rx_mem_buffer *rxb)
908 #ifdef CONFIG_IWLWIFI_DEBUG
909 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
910 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
911 u8 rate = beacon->beacon_notify_hdr.rate;
913 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
914 "tsf %d %d rate %d\n",
915 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
916 beacon->beacon_notify_hdr.failure_frame,
917 le32_to_cpu(beacon->ibss_mgr_status),
918 le32_to_cpu(beacon->high_tsf),
919 le32_to_cpu(beacon->low_tsf), rate);
922 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
923 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
924 queue_work(priv->workqueue, &priv->beacon_update);
927 /* Handle notification from uCode that card's power state is changing
928 * due to software, hardware, or critical temperature RFKILL */
929 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
930 struct iwl_rx_mem_buffer *rxb)
932 struct iwl_rx_packet *pkt = (void *)rxb->skb->data;
933 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
934 unsigned long status = priv->status;
936 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
937 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
938 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
940 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
941 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
943 if (flags & HW_CARD_DISABLED)
944 set_bit(STATUS_RF_KILL_HW, &priv->status);
946 clear_bit(STATUS_RF_KILL_HW, &priv->status);
949 iwl_scan_cancel(priv);
951 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
952 test_bit(STATUS_RF_KILL_HW, &priv->status)))
953 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
954 test_bit(STATUS_RF_KILL_HW, &priv->status));
956 wake_up_interruptible(&priv->wait_command_queue);
960 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
962 * Setup the RX handlers for each of the reply types sent from the uCode
965 * This function chains into the hardware specific files for them to setup
966 * any hardware specific handlers as well.
968 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
970 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
971 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
972 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
973 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
974 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
975 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
976 iwl_rx_pm_debug_statistics_notif;
977 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
980 * The same handler is used for both the REPLY to a discrete
981 * statistics request from the host as well as for the periodic
982 * statistics notifications (after received beacons) from the uCode.
984 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_hw_rx_statistics;
985 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
987 iwl_setup_spectrum_handlers(priv);
988 iwl_setup_rx_scan_handlers(priv);
989 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
991 /* Set up hardware specific Rx handlers */
992 iwl3945_hw_rx_handler_setup(priv);
995 /************************** RX-FUNCTIONS ****************************/
997 * Rx theory of operation
999 * The host allocates 32 DMA target addresses and passes the host address
1000 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
1004 * The host/firmware share two index registers for managing the Rx buffers.
1006 * The READ index maps to the first position that the firmware may be writing
1007 * to -- the driver can read up to (but not including) this position and get
1009 * The READ index is managed by the firmware once the card is enabled.
1011 * The WRITE index maps to the last position the driver has read from -- the
1012 * position preceding WRITE is the last slot the firmware can place a packet.
1014 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
1017 * During initialization, the host sets up the READ queue position to the first
1018 * INDEX position, and WRITE to the last (READ - 1 wrapped)
1020 * When the firmware places a packet in a buffer, it will advance the READ index
1021 * and fire the RX interrupt. The driver can then query the READ index and
1022 * process as many packets as possible, moving the WRITE index forward as it
1023 * resets the Rx queue buffers with new memory.
1025 * The management in the driver is as follows:
1026 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1027 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1028 * to replenish the iwl->rxq->rx_free.
1029 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1030 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1031 * 'processed' and 'read' driver indexes as well)
1032 * + A received packet is processed and handed to the kernel network stack,
1033 * detached from the iwl->rxq. The driver 'processed' index is updated.
1034 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1035 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1036 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1037 * were enough free buffers and RX_STALLED is set it is cleared.
1042 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1043 * iwl3945_rx_queue_restock
1044 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1045 * queue, updates firmware pointers, and updates
1046 * the WRITE index. If insufficient rx_free buffers
1047 * are available, schedules iwl3945_rx_replenish
1049 * -- enable interrupts --
1050 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1051 * READ INDEX, detaching the SKB from the pool.
1052 * Moves the packet buffer from queue to rx_used.
1053 * Calls iwl3945_rx_queue_restock to refill any empty
1060 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1062 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1063 dma_addr_t dma_addr)
1065 return cpu_to_le32((u32)dma_addr);
1069 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1071 * If there are slots in the RX queue that need to be restocked,
1072 * and we have free pre-allocated buffers, fill the ranks as much
1073 * as we can, pulling from rx_free.
1075 * This moves the 'write' index forward to catch up with 'processed', and
1076 * also updates the memory address in the firmware to reference the new
1079 static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
1081 struct iwl_rx_queue *rxq = &priv->rxq;
1082 struct list_head *element;
1083 struct iwl_rx_mem_buffer *rxb;
1084 unsigned long flags;
1087 spin_lock_irqsave(&rxq->lock, flags);
1088 write = rxq->write & ~0x7;
1089 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1090 /* Get next free Rx buffer, remove from free list */
1091 element = rxq->rx_free.next;
1092 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1095 /* Point to Rx buffer via next RBD in circular buffer */
1096 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->real_dma_addr);
1097 rxq->queue[rxq->write] = rxb;
1098 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1101 spin_unlock_irqrestore(&rxq->lock, flags);
1102 /* If the pre-allocated buffer pool is dropping low, schedule to
1104 if (rxq->free_count <= RX_LOW_WATERMARK)
1105 queue_work(priv->workqueue, &priv->rx_replenish);
1108 /* If we've added more space for the firmware to place data, tell it.
1109 * Increment device's write pointer in multiples of 8. */
1110 if ((rxq->write_actual != (rxq->write & ~0x7))
1111 || (abs(rxq->write - rxq->read) > 7)) {
1112 spin_lock_irqsave(&rxq->lock, flags);
1113 rxq->need_update = 1;
1114 spin_unlock_irqrestore(&rxq->lock, flags);
1115 rc = iwl_rx_queue_update_write_ptr(priv, rxq);
1124 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1126 * When moving to rx_free an SKB is allocated for the slot.
1128 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1129 * This is called as a scheduled work item (except for during initialization)
1131 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1133 struct iwl_rx_queue *rxq = &priv->rxq;
1134 struct list_head *element;
1135 struct iwl_rx_mem_buffer *rxb;
1136 struct sk_buff *skb;
1137 unsigned long flags;
1140 spin_lock_irqsave(&rxq->lock, flags);
1142 if (list_empty(&rxq->rx_used)) {
1143 spin_unlock_irqrestore(&rxq->lock, flags);
1146 spin_unlock_irqrestore(&rxq->lock, flags);
1148 if (rxq->free_count > RX_LOW_WATERMARK)
1149 priority |= __GFP_NOWARN;
1150 /* Alloc a new receive buffer */
1151 skb = alloc_skb(priv->hw_params.rx_buf_size, priority);
1153 if (net_ratelimit())
1154 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1155 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1157 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1158 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1160 /* We don't reschedule replenish work here -- we will
1161 * call the restock method and if it still needs
1162 * more buffers it will schedule replenish */
1166 spin_lock_irqsave(&rxq->lock, flags);
1167 if (list_empty(&rxq->rx_used)) {
1168 spin_unlock_irqrestore(&rxq->lock, flags);
1169 dev_kfree_skb_any(skb);
1172 element = rxq->rx_used.next;
1173 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1175 spin_unlock_irqrestore(&rxq->lock, flags);
1179 /* If radiotap head is required, reserve some headroom here.
1180 * The physical head count is a variable rx_stats->phy_count.
1181 * We reserve 4 bytes here. Plus these extra bytes, the
1182 * headroom of the physical head should be enough for the
1183 * radiotap head that iwl3945 supported. See iwl3945_rt.
1185 skb_reserve(rxb->skb, 4);
1187 /* Get physical address of RB/SKB */
1188 rxb->real_dma_addr = pci_map_single(priv->pci_dev,
1190 priv->hw_params.rx_buf_size,
1191 PCI_DMA_FROMDEVICE);
1193 spin_lock_irqsave(&rxq->lock, flags);
1194 list_add_tail(&rxb->list, &rxq->rx_free);
1195 priv->alloc_rxb_skb++;
1197 spin_unlock_irqrestore(&rxq->lock, flags);
1201 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1203 unsigned long flags;
1205 spin_lock_irqsave(&rxq->lock, flags);
1206 INIT_LIST_HEAD(&rxq->rx_free);
1207 INIT_LIST_HEAD(&rxq->rx_used);
1208 /* Fill the rx_used queue with _all_ of the Rx buffers */
1209 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1210 /* In the reset function, these buffers may have been allocated
1211 * to an SKB, so we need to unmap and free potential storage */
1212 if (rxq->pool[i].skb != NULL) {
1213 pci_unmap_single(priv->pci_dev,
1214 rxq->pool[i].real_dma_addr,
1215 priv->hw_params.rx_buf_size,
1216 PCI_DMA_FROMDEVICE);
1217 priv->alloc_rxb_skb--;
1218 dev_kfree_skb(rxq->pool[i].skb);
1219 rxq->pool[i].skb = NULL;
1221 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1224 /* Set us so that we have processed and used all buffers, but have
1225 * not restocked the Rx queue with fresh buffers */
1226 rxq->read = rxq->write = 0;
1227 rxq->free_count = 0;
1228 rxq->write_actual = 0;
1229 spin_unlock_irqrestore(&rxq->lock, flags);
1232 void iwl3945_rx_replenish(void *data)
1234 struct iwl_priv *priv = data;
1235 unsigned long flags;
1237 iwl3945_rx_allocate(priv, GFP_KERNEL);
1239 spin_lock_irqsave(&priv->lock, flags);
1240 iwl3945_rx_queue_restock(priv);
1241 spin_unlock_irqrestore(&priv->lock, flags);
1244 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1246 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1248 iwl3945_rx_queue_restock(priv);
1252 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1253 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1254 * This free routine walks the list of POOL entries and if SKB is set to
1255 * non NULL it is unmapped and freed
1257 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1260 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1261 if (rxq->pool[i].skb != NULL) {
1262 pci_unmap_single(priv->pci_dev,
1263 rxq->pool[i].real_dma_addr,
1264 priv->hw_params.rx_buf_size,
1265 PCI_DMA_FROMDEVICE);
1266 dev_kfree_skb(rxq->pool[i].skb);
1270 pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1272 pci_free_consistent(priv->pci_dev, sizeof(struct iwl_rb_status),
1273 rxq->rb_stts, rxq->rb_stts_dma);
1275 rxq->rb_stts = NULL;
1279 /* Convert linear signal-to-noise ratio into dB */
1280 static u8 ratio2dB[100] = {
1281 /* 0 1 2 3 4 5 6 7 8 9 */
1282 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1283 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1284 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1285 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1286 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1287 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1288 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1289 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1290 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1291 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1294 /* Calculates a relative dB value from a ratio of linear
1295 * (i.e. not dB) signal levels.
1296 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1297 int iwl3945_calc_db_from_ratio(int sig_ratio)
1299 /* 1000:1 or higher just report as 60 dB */
1300 if (sig_ratio >= 1000)
1303 /* 100:1 or higher, divide by 10 and use table,
1304 * add 20 dB to make up for divide by 10 */
1305 if (sig_ratio >= 100)
1306 return 20 + (int)ratio2dB[sig_ratio/10];
1308 /* We shouldn't see this */
1312 /* Use table for ratios 1:1 - 99:1 */
1313 return (int)ratio2dB[sig_ratio];
1316 #define PERFECT_RSSI (-20) /* dBm */
1317 #define WORST_RSSI (-95) /* dBm */
1318 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1320 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1321 * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1322 * about formulas used below. */
1323 int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm)
1326 int degradation = PERFECT_RSSI - rssi_dbm;
1328 /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1329 * as indicator; formula is (signal dbm - noise dbm).
1330 * SNR at or above 40 is a great signal (100%).
1331 * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1332 * Weakest usable signal is usually 10 - 15 dB SNR. */
1334 if (rssi_dbm - noise_dbm >= 40)
1336 else if (rssi_dbm < noise_dbm)
1338 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1340 /* Else use just the signal level.
1341 * This formula is a least squares fit of data points collected and
1342 * compared with a reference system that had a percentage (%) display
1343 * for signal quality. */
1345 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1346 (15 * RSSI_RANGE + 62 * degradation)) /
1347 (RSSI_RANGE * RSSI_RANGE);
1351 else if (sig_qual < 1)
1358 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1360 * Uses the priv->rx_handlers callback function array to invoke
1361 * the appropriate handlers, including command responses,
1362 * frame-received notifications, and other notifications.
1364 static void iwl3945_rx_handle(struct iwl_priv *priv)
1366 struct iwl_rx_mem_buffer *rxb;
1367 struct iwl_rx_packet *pkt;
1368 struct iwl_rx_queue *rxq = &priv->rxq;
1371 unsigned long flags;
1374 int total_empty = 0;
1376 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1377 * buffer that the driver may process (last buffer filled by ucode). */
1378 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1381 /* calculate total frames need to be restock after handling RX */
1382 total_empty = r - priv->rxq.write_actual;
1383 if (total_empty < 0)
1384 total_empty += RX_QUEUE_SIZE;
1386 if (total_empty > (RX_QUEUE_SIZE / 2))
1388 /* Rx interrupt, but nothing sent from uCode */
1390 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1393 rxb = rxq->queue[i];
1395 /* If an RXB doesn't have a Rx queue slot associated with it,
1396 * then a bug has been introduced in the queue refilling
1397 * routines -- catch it here */
1398 BUG_ON(rxb == NULL);
1400 rxq->queue[i] = NULL;
1402 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1403 priv->hw_params.rx_buf_size,
1404 PCI_DMA_FROMDEVICE);
1405 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1407 trace_iwlwifi_dev_rx(priv, pkt,
1408 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1410 /* Reclaim a command buffer only if this packet is a response
1411 * to a (driver-originated) command.
1412 * If the packet (e.g. Rx frame) originated from uCode,
1413 * there is no command buffer to reclaim.
1414 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1415 * but apparently a few don't get set; catch them here. */
1416 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1417 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1418 (pkt->hdr.cmd != REPLY_TX);
1420 /* Based on type of command response or notification,
1421 * handle those that need handling via function in
1422 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1423 if (priv->rx_handlers[pkt->hdr.cmd]) {
1424 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1425 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1426 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1427 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1429 /* No handling needed */
1430 IWL_DEBUG_RX(priv, "r %d i %d No handler needed for %s, 0x%02x\n",
1431 r, i, get_cmd_string(pkt->hdr.cmd),
1436 /* Invoke any callbacks, transfer the skb to caller, and
1437 * fire off the (possibly) blocking iwl_send_cmd()
1438 * as we reclaim the driver command queue */
1439 if (rxb && rxb->skb)
1440 iwl_tx_cmd_complete(priv, rxb);
1442 IWL_WARN(priv, "Claim null rxb?\n");
1445 /* For now we just don't re-use anything. We can tweak this
1446 * later to try and re-use notification packets and SKBs that
1447 * fail to Rx correctly */
1448 if (rxb->skb != NULL) {
1449 priv->alloc_rxb_skb--;
1450 dev_kfree_skb_any(rxb->skb);
1454 spin_lock_irqsave(&rxq->lock, flags);
1455 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1456 spin_unlock_irqrestore(&rxq->lock, flags);
1457 i = (i + 1) & RX_QUEUE_MASK;
1458 /* If there are a lot of unused frames,
1459 * restock the Rx queue so ucode won't assert. */
1464 iwl3945_rx_replenish_now(priv);
1470 /* Backtrack one entry */
1473 iwl3945_rx_replenish_now(priv);
1475 iwl3945_rx_queue_restock(priv);
1478 /* call this function to flush any scheduled tasklet */
1479 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1481 /* wait to make sure we flush pending tasklet*/
1482 synchronize_irq(priv->pci_dev->irq);
1483 tasklet_kill(&priv->irq_tasklet);
1486 #ifdef CONFIG_IWLWIFI_DEBUG
1487 static const char *desc_lookup(int i)
1495 return "BAD_CHECKSUM";
1497 return "NMI_INTERRUPT";
1501 return "FATAL_ERROR";
1507 #define ERROR_START_OFFSET (1 * sizeof(u32))
1508 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1510 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1513 u32 desc, time, count, base, data1;
1514 u32 blink1, blink2, ilink1, ilink2;
1516 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1518 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1519 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1524 count = iwl_read_targ_mem(priv, base);
1526 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1527 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1528 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1529 priv->status, count);
1532 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1533 "ilink1 nmiPC Line\n");
1534 for (i = ERROR_START_OFFSET;
1535 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1536 i += ERROR_ELEM_SIZE) {
1537 desc = iwl_read_targ_mem(priv, base + i);
1539 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1541 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1543 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1545 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1547 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1549 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1552 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1553 desc_lookup(desc), desc, time, blink1, blink2,
1554 ilink1, ilink2, data1);
1555 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1556 0, blink1, blink2, ilink1, ilink2);
1560 #define EVENT_START_OFFSET (6 * sizeof(u32))
1563 * iwl3945_print_event_log - Dump error event log to syslog
1566 static void iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1567 u32 num_events, u32 mode)
1570 u32 base; /* SRAM byte address of event log header */
1571 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1572 u32 ptr; /* SRAM byte address of log data */
1573 u32 ev, time, data; /* event log data */
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 /* "time" is actually "data" for mode 0 (no timestamp).
1588 * place event id # at far right for easier visual parsing. */
1589 for (i = 0; i < num_events; i++) {
1590 ev = iwl_read_targ_mem(priv, ptr);
1592 time = iwl_read_targ_mem(priv, ptr);
1596 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1597 trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
1599 data = iwl_read_targ_mem(priv, ptr);
1601 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n", time, data, ev);
1602 trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
1607 void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1609 u32 base; /* SRAM byte address of event log header */
1610 u32 capacity; /* event log capacity in # entries */
1611 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1612 u32 num_wraps; /* # times uCode wrapped to top of log */
1613 u32 next_entry; /* index of next entry to be written by uCode */
1614 u32 size; /* # entries that we'll print */
1616 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1617 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1618 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1622 /* event log header */
1623 capacity = iwl_read_targ_mem(priv, base);
1624 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1625 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1626 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1628 size = num_wraps ? capacity : next_entry;
1630 /* bail out if nothing in log */
1632 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1636 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1639 /* if uCode has wrapped back to top of log, start at the oldest entry,
1640 * i.e the next one that uCode would fill. */
1642 iwl3945_print_event_log(priv, next_entry,
1643 capacity - next_entry, mode);
1645 /* (then/else) start at top of log */
1646 iwl3945_print_event_log(priv, 0, next_entry, mode);
1650 void iwl3945_dump_nic_event_log(struct iwl_priv *priv)
1654 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1660 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1662 u32 inta, handled = 0;
1664 unsigned long flags;
1665 #ifdef CONFIG_IWLWIFI_DEBUG
1669 spin_lock_irqsave(&priv->lock, flags);
1671 /* Ack/clear/reset pending uCode interrupts.
1672 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1673 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1674 inta = iwl_read32(priv, CSR_INT);
1675 iwl_write32(priv, CSR_INT, inta);
1677 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1678 * Any new interrupts that happen after this, either while we're
1679 * in this tasklet, or later, will show up in next ISR/tasklet. */
1680 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1681 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1683 #ifdef CONFIG_IWLWIFI_DEBUG
1684 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1685 /* just for debug */
1686 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1687 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1688 inta, inta_mask, inta_fh);
1692 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1693 * atomic, make sure that inta covers all the interrupts that
1694 * we've discovered, even if FH interrupt came in just after
1695 * reading CSR_INT. */
1696 if (inta_fh & CSR39_FH_INT_RX_MASK)
1697 inta |= CSR_INT_BIT_FH_RX;
1698 if (inta_fh & CSR39_FH_INT_TX_MASK)
1699 inta |= CSR_INT_BIT_FH_TX;
1701 /* Now service all interrupt bits discovered above. */
1702 if (inta & CSR_INT_BIT_HW_ERR) {
1703 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1705 /* Tell the device to stop sending interrupts */
1706 iwl_disable_interrupts(priv);
1708 priv->isr_stats.hw++;
1709 iwl_irq_handle_error(priv);
1711 handled |= CSR_INT_BIT_HW_ERR;
1713 spin_unlock_irqrestore(&priv->lock, flags);
1718 #ifdef CONFIG_IWLWIFI_DEBUG
1719 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1720 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1721 if (inta & CSR_INT_BIT_SCD) {
1722 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1723 "the frame/frames.\n");
1724 priv->isr_stats.sch++;
1727 /* Alive notification via Rx interrupt will do the real work */
1728 if (inta & CSR_INT_BIT_ALIVE) {
1729 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1730 priv->isr_stats.alive++;
1734 /* Safely ignore these bits for debug checks below */
1735 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1737 /* Error detected by uCode */
1738 if (inta & CSR_INT_BIT_SW_ERR) {
1739 IWL_ERR(priv, "Microcode SW error detected. "
1740 "Restarting 0x%X.\n", inta);
1741 priv->isr_stats.sw++;
1742 priv->isr_stats.sw_err = inta;
1743 iwl_irq_handle_error(priv);
1744 handled |= CSR_INT_BIT_SW_ERR;
1747 /* uCode wakes up after power-down sleep */
1748 if (inta & CSR_INT_BIT_WAKEUP) {
1749 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1750 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1751 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1752 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1753 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1754 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1755 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1756 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1758 priv->isr_stats.wakeup++;
1759 handled |= CSR_INT_BIT_WAKEUP;
1762 /* All uCode command responses, including Tx command responses,
1763 * Rx "responses" (frame-received notification), and other
1764 * notifications from uCode come through here*/
1765 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1766 iwl3945_rx_handle(priv);
1767 priv->isr_stats.rx++;
1768 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1771 if (inta & CSR_INT_BIT_FH_TX) {
1772 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1773 priv->isr_stats.tx++;
1775 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1776 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1777 (FH39_SRVC_CHNL), 0x0);
1778 handled |= CSR_INT_BIT_FH_TX;
1781 if (inta & ~handled) {
1782 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1783 priv->isr_stats.unhandled++;
1786 if (inta & ~priv->inta_mask) {
1787 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1788 inta & ~priv->inta_mask);
1789 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1792 /* Re-enable all interrupts */
1793 /* only Re-enable if disabled by irq */
1794 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1795 iwl_enable_interrupts(priv);
1797 #ifdef CONFIG_IWLWIFI_DEBUG
1798 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1799 inta = iwl_read32(priv, CSR_INT);
1800 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1801 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1802 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1803 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1806 spin_unlock_irqrestore(&priv->lock, flags);
1809 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1810 enum ieee80211_band band,
1811 u8 is_active, u8 n_probes,
1812 struct iwl3945_scan_channel *scan_ch)
1814 struct ieee80211_channel *chan;
1815 const struct ieee80211_supported_band *sband;
1816 const struct iwl_channel_info *ch_info;
1817 u16 passive_dwell = 0;
1818 u16 active_dwell = 0;
1821 sband = iwl_get_hw_mode(priv, band);
1825 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1826 passive_dwell = iwl_get_passive_dwell_time(priv, band);
1828 if (passive_dwell <= active_dwell)
1829 passive_dwell = active_dwell + 1;
1831 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1832 chan = priv->scan_request->channels[i];
1834 if (chan->band != band)
1837 scan_ch->channel = chan->hw_value;
1839 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1840 if (!is_channel_valid(ch_info)) {
1841 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1846 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1847 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1848 /* If passive , set up for auto-switch
1849 * and use long active_dwell time.
1851 if (!is_active || is_channel_passive(ch_info) ||
1852 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1853 scan_ch->type = 0; /* passive */
1854 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1855 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1857 scan_ch->type = 1; /* active */
1860 /* Set direct probe bits. These may be used both for active
1861 * scan channels (probes gets sent right away),
1862 * or for passive channels (probes get se sent only after
1863 * hearing clear Rx packet).*/
1864 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1866 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1868 /* uCode v1 does not allow setting direct probe bits on
1869 * passive channel. */
1870 if ((scan_ch->type & 1) && n_probes)
1871 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1874 /* Set txpower levels to defaults */
1875 scan_ch->tpc.dsp_atten = 110;
1876 /* scan_pwr_info->tpc.dsp_atten; */
1878 /*scan_pwr_info->tpc.tx_gain; */
1879 if (band == IEEE80211_BAND_5GHZ)
1880 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1882 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1883 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1885 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1889 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1891 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1892 (scan_ch->type & 1) ?
1893 active_dwell : passive_dwell);
1899 IWL_DEBUG_SCAN(priv, "total channels to scan %d \n", added);
1903 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1904 struct ieee80211_rate *rates)
1908 for (i = 0; i < IWL_RATE_COUNT; i++) {
1909 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1910 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1911 rates[i].hw_value_short = i;
1913 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1915 * If CCK != 1M then set short preamble rate flag.
1917 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1918 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1923 /******************************************************************************
1925 * uCode download functions
1927 ******************************************************************************/
1929 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1931 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1932 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1933 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1934 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1935 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1936 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1940 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1941 * looking at all data.
1943 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1950 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1952 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1953 IWL39_RTC_INST_LOWER_BOUND);
1956 for (; len > 0; len -= sizeof(u32), image++) {
1957 /* read data comes through single port, auto-incr addr */
1958 /* NOTE: Use the debugless read so we don't flood kernel log
1959 * if IWL_DL_IO is set */
1960 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1961 if (val != le32_to_cpu(*image)) {
1962 IWL_ERR(priv, "uCode INST section is invalid at "
1963 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1964 save_len - len, val, le32_to_cpu(*image));
1974 IWL_DEBUG_INFO(priv,
1975 "ucode image in INSTRUCTION memory is good\n");
1982 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1983 * using sample data 100 bytes apart. If these sample points are good,
1984 * it's a pretty good bet that everything between them is good, too.
1986 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
1993 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1995 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
1996 /* read data comes through single port, auto-incr addr */
1997 /* NOTE: Use the debugless read so we don't flood kernel log
1998 * if IWL_DL_IO is set */
1999 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2000 i + IWL39_RTC_INST_LOWER_BOUND);
2001 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2002 if (val != le32_to_cpu(*image)) {
2003 #if 0 /* Enable this if you want to see details */
2004 IWL_ERR(priv, "uCode INST section is invalid at "
2005 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2020 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2021 * and verify its contents
2023 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2030 image = (__le32 *)priv->ucode_boot.v_addr;
2031 len = priv->ucode_boot.len;
2032 rc = iwl3945_verify_inst_sparse(priv, image, len);
2034 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2038 /* Try initialize */
2039 image = (__le32 *)priv->ucode_init.v_addr;
2040 len = priv->ucode_init.len;
2041 rc = iwl3945_verify_inst_sparse(priv, image, len);
2043 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2047 /* Try runtime/protocol */
2048 image = (__le32 *)priv->ucode_code.v_addr;
2049 len = priv->ucode_code.len;
2050 rc = iwl3945_verify_inst_sparse(priv, image, len);
2052 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2056 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2058 /* Since nothing seems to match, show first several data entries in
2059 * instruction SRAM, so maybe visual inspection will give a clue.
2060 * Selection of bootstrap image (vs. other images) is arbitrary. */
2061 image = (__le32 *)priv->ucode_boot.v_addr;
2062 len = priv->ucode_boot.len;
2063 rc = iwl3945_verify_inst_full(priv, image, len);
2068 static void iwl3945_nic_start(struct iwl_priv *priv)
2070 /* Remove all resets to allow NIC to operate */
2071 iwl_write32(priv, CSR_RESET, 0);
2075 * iwl3945_read_ucode - Read uCode images from disk file.
2077 * Copy into buffers for card to fetch via bus-mastering
2079 static int iwl3945_read_ucode(struct iwl_priv *priv)
2081 const struct iwl_ucode_header *ucode;
2082 int ret = -EINVAL, index;
2083 const struct firmware *ucode_raw;
2084 /* firmware file name contains uCode/driver compatibility version */
2085 const char *name_pre = priv->cfg->fw_name_pre;
2086 const unsigned int api_max = priv->cfg->ucode_api_max;
2087 const unsigned int api_min = priv->cfg->ucode_api_min;
2091 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2093 /* Ask kernel firmware_class module to get the boot firmware off disk.
2094 * request_firmware() is synchronous, file is in memory on return. */
2095 for (index = api_max; index >= api_min; index--) {
2096 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2097 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2099 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2106 if (index < api_max)
2107 IWL_ERR(priv, "Loaded firmware %s, "
2108 "which is deprecated. "
2109 " Please use API v%u instead.\n",
2111 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2112 "(%zd bytes) from disk\n",
2113 buf, ucode_raw->size);
2121 /* Make sure that we got at least our header! */
2122 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
2123 IWL_ERR(priv, "File size way too small!\n");
2128 /* Data from ucode file: header followed by uCode images */
2129 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2131 priv->ucode_ver = le32_to_cpu(ucode->ver);
2132 api_ver = IWL_UCODE_API(priv->ucode_ver);
2133 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
2134 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
2135 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
2137 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
2138 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
2139 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
2141 /* api_ver should match the api version forming part of the
2142 * firmware filename ... but we don't check for that and only rely
2143 * on the API version read from firmware header from here on forward */
2145 if (api_ver < api_min || api_ver > api_max) {
2146 IWL_ERR(priv, "Driver unable to support your firmware API. "
2147 "Driver supports v%u, firmware is v%u.\n",
2149 priv->ucode_ver = 0;
2153 if (api_ver != api_max)
2154 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2155 "got %u. New firmware can be obtained "
2156 "from http://www.intellinuxwireless.org.\n",
2159 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2160 IWL_UCODE_MAJOR(priv->ucode_ver),
2161 IWL_UCODE_MINOR(priv->ucode_ver),
2162 IWL_UCODE_API(priv->ucode_ver),
2163 IWL_UCODE_SERIAL(priv->ucode_ver));
2165 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2167 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2169 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2171 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2173 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2175 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2179 /* Verify size of file vs. image size info in file's header */
2180 if (ucode_raw->size != priv->cfg->ops->ucode->get_header_size(api_ver) +
2181 inst_size + data_size + init_size +
2182 init_data_size + boot_size) {
2184 IWL_DEBUG_INFO(priv,
2185 "uCode file size %zd does not match expected size\n",
2191 /* Verify that uCode images will fit in card's SRAM */
2192 if (inst_size > IWL39_MAX_INST_SIZE) {
2193 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2199 if (data_size > IWL39_MAX_DATA_SIZE) {
2200 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2205 if (init_size > IWL39_MAX_INST_SIZE) {
2206 IWL_DEBUG_INFO(priv,
2207 "uCode init instr len %d too large to fit in\n",
2212 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2213 IWL_DEBUG_INFO(priv,
2214 "uCode init data len %d too large to fit in\n",
2219 if (boot_size > IWL39_MAX_BSM_SIZE) {
2220 IWL_DEBUG_INFO(priv,
2221 "uCode boot instr len %d too large to fit in\n",
2227 /* Allocate ucode buffers for card's bus-master loading ... */
2229 /* Runtime instructions and 2 copies of data:
2230 * 1) unmodified from disk
2231 * 2) backup cache for save/restore during power-downs */
2232 priv->ucode_code.len = inst_size;
2233 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2235 priv->ucode_data.len = data_size;
2236 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2238 priv->ucode_data_backup.len = data_size;
2239 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2241 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2242 !priv->ucode_data_backup.v_addr)
2245 /* Initialization instructions and data */
2246 if (init_size && init_data_size) {
2247 priv->ucode_init.len = init_size;
2248 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2250 priv->ucode_init_data.len = init_data_size;
2251 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2253 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2257 /* Bootstrap (instructions only, no data) */
2259 priv->ucode_boot.len = boot_size;
2260 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2262 if (!priv->ucode_boot.v_addr)
2266 /* Copy images into buffers for card's bus-master reads ... */
2268 /* Runtime instructions (first block of data in file) */
2270 IWL_DEBUG_INFO(priv,
2271 "Copying (but not loading) uCode instr len %zd\n", len);
2272 memcpy(priv->ucode_code.v_addr, src, len);
2275 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2276 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2278 /* Runtime data (2nd block)
2279 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2281 IWL_DEBUG_INFO(priv,
2282 "Copying (but not loading) uCode data len %zd\n", len);
2283 memcpy(priv->ucode_data.v_addr, src, len);
2284 memcpy(priv->ucode_data_backup.v_addr, src, len);
2287 /* Initialization instructions (3rd block) */
2290 IWL_DEBUG_INFO(priv,
2291 "Copying (but not loading) init instr len %zd\n", len);
2292 memcpy(priv->ucode_init.v_addr, src, len);
2296 /* Initialization data (4th block) */
2297 if (init_data_size) {
2298 len = init_data_size;
2299 IWL_DEBUG_INFO(priv,
2300 "Copying (but not loading) init data len %zd\n", len);
2301 memcpy(priv->ucode_init_data.v_addr, src, len);
2305 /* Bootstrap instructions (5th block) */
2307 IWL_DEBUG_INFO(priv,
2308 "Copying (but not loading) boot instr len %zd\n", len);
2309 memcpy(priv->ucode_boot.v_addr, src, len);
2311 /* We have our copies now, allow OS release its copies */
2312 release_firmware(ucode_raw);
2316 IWL_ERR(priv, "failed to allocate pci memory\n");
2318 iwl3945_dealloc_ucode_pci(priv);
2321 release_firmware(ucode_raw);
2329 * iwl3945_set_ucode_ptrs - Set uCode address location
2331 * Tell initialization uCode where to find runtime uCode.
2333 * BSM registers initially contain pointers to initialization uCode.
2334 * We need to replace them to load runtime uCode inst and data,
2335 * and to save runtime data when powering down.
2337 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2342 /* bits 31:0 for 3945 */
2343 pinst = priv->ucode_code.p_addr;
2344 pdata = priv->ucode_data_backup.p_addr;
2346 /* Tell bootstrap uCode where to find image to load */
2347 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2348 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2349 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2350 priv->ucode_data.len);
2352 /* Inst byte count must be last to set up, bit 31 signals uCode
2353 * that all new ptr/size info is in place */
2354 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2355 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2357 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2363 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2365 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2367 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2369 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2371 /* Check alive response for "valid" sign from uCode */
2372 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2373 /* We had an error bringing up the hardware, so take it
2374 * all the way back down so we can try again */
2375 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2379 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2380 * This is a paranoid check, because we would not have gotten the
2381 * "initialize" alive if code weren't properly loaded. */
2382 if (iwl3945_verify_ucode(priv)) {
2383 /* Runtime instruction load was bad;
2384 * take it all the way back down so we can try again */
2385 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2389 /* Send pointers to protocol/runtime uCode image ... init code will
2390 * load and launch runtime uCode, which will send us another "Alive"
2392 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2393 if (iwl3945_set_ucode_ptrs(priv)) {
2394 /* Runtime instruction load won't happen;
2395 * take it all the way back down so we can try again */
2396 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2402 queue_work(priv->workqueue, &priv->restart);
2406 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2407 * from protocol/runtime uCode (initialization uCode's
2408 * Alive gets handled by iwl3945_init_alive_start()).
2410 static void iwl3945_alive_start(struct iwl_priv *priv)
2412 int thermal_spin = 0;
2415 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2417 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2418 /* We had an error bringing up the hardware, so take it
2419 * all the way back down so we can try again */
2420 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2424 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2425 * This is a paranoid check, because we would not have gotten the
2426 * "runtime" alive if code weren't properly loaded. */
2427 if (iwl3945_verify_ucode(priv)) {
2428 /* Runtime instruction load was bad;
2429 * take it all the way back down so we can try again */
2430 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2434 iwl_clear_stations_table(priv);
2436 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2437 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2440 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2441 /* if RFKILL is not on, then wait for thermal
2442 * sensor in adapter to kick in */
2443 while (iwl3945_hw_get_temperature(priv) == 0) {
2449 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2452 set_bit(STATUS_RF_KILL_HW, &priv->status);
2454 /* After the ALIVE response, we can send commands to 3945 uCode */
2455 set_bit(STATUS_ALIVE, &priv->status);
2457 if (iwl_is_rfkill(priv))
2460 ieee80211_wake_queues(priv->hw);
2462 priv->active_rate = priv->rates_mask;
2463 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2465 iwl_power_update_mode(priv, false);
2467 if (iwl_is_associated(priv)) {
2468 struct iwl3945_rxon_cmd *active_rxon =
2469 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2471 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2472 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2474 /* Initialize our rx_config data */
2475 iwl_connection_init_rx_config(priv, priv->iw_mode);
2478 /* Configure Bluetooth device coexistence support */
2479 iwl_send_bt_config(priv);
2481 /* Configure the adapter for unassociated operation */
2482 iwlcore_commit_rxon(priv);
2484 iwl3945_reg_txpower_periodic(priv);
2486 iwl3945_led_register(priv);
2488 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2489 set_bit(STATUS_READY, &priv->status);
2490 wake_up_interruptible(&priv->wait_command_queue);
2492 /* reassociate for ADHOC mode */
2493 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2494 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2497 iwl_mac_beacon_update(priv->hw, beacon);
2500 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2501 iwl_set_mode(priv, priv->iw_mode);
2506 queue_work(priv->workqueue, &priv->restart);
2509 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2511 static void __iwl3945_down(struct iwl_priv *priv)
2513 unsigned long flags;
2514 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2515 struct ieee80211_conf *conf = NULL;
2517 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2519 conf = ieee80211_get_hw_conf(priv->hw);
2522 set_bit(STATUS_EXIT_PENDING, &priv->status);
2524 iwl3945_led_unregister(priv);
2525 iwl_clear_stations_table(priv);
2527 /* Unblock any waiting calls */
2528 wake_up_interruptible_all(&priv->wait_command_queue);
2530 /* Wipe out the EXIT_PENDING status bit if we are not actually
2531 * exiting the module */
2533 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2535 /* stop and reset the on-board processor */
2536 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2538 /* tell the device to stop sending interrupts */
2539 spin_lock_irqsave(&priv->lock, flags);
2540 iwl_disable_interrupts(priv);
2541 spin_unlock_irqrestore(&priv->lock, flags);
2542 iwl_synchronize_irq(priv);
2544 if (priv->mac80211_registered)
2545 ieee80211_stop_queues(priv->hw);
2547 /* If we have not previously called iwl3945_init() then
2548 * clear all bits but the RF Kill bits and return */
2549 if (!iwl_is_init(priv)) {
2550 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2552 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2553 STATUS_GEO_CONFIGURED |
2554 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2555 STATUS_EXIT_PENDING;
2559 /* ...otherwise clear out all the status bits but the RF Kill
2560 * bit and continue taking the NIC down. */
2561 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2563 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2564 STATUS_GEO_CONFIGURED |
2565 test_bit(STATUS_FW_ERROR, &priv->status) <<
2567 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2568 STATUS_EXIT_PENDING;
2570 priv->cfg->ops->lib->apm_ops.reset(priv);
2571 spin_lock_irqsave(&priv->lock, flags);
2572 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2573 spin_unlock_irqrestore(&priv->lock, flags);
2575 iwl3945_hw_txq_ctx_stop(priv);
2576 iwl3945_hw_rxq_stop(priv);
2578 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2579 APMG_CLK_VAL_DMA_CLK_RQT);
2584 priv->cfg->ops->lib->apm_ops.stop(priv);
2586 priv->cfg->ops->lib->apm_ops.reset(priv);
2589 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2591 if (priv->ibss_beacon)
2592 dev_kfree_skb(priv->ibss_beacon);
2593 priv->ibss_beacon = NULL;
2595 /* clear out any free frames */
2596 iwl3945_clear_free_frames(priv);
2599 static void iwl3945_down(struct iwl_priv *priv)
2601 mutex_lock(&priv->mutex);
2602 __iwl3945_down(priv);
2603 mutex_unlock(&priv->mutex);
2605 iwl3945_cancel_deferred_work(priv);
2608 #define MAX_HW_RESTARTS 5
2610 static int __iwl3945_up(struct iwl_priv *priv)
2614 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2615 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2619 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2620 IWL_ERR(priv, "ucode not available for device bring up\n");
2624 /* If platform's RF_KILL switch is NOT set to KILL */
2625 if (iwl_read32(priv, CSR_GP_CNTRL) &
2626 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2627 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2629 set_bit(STATUS_RF_KILL_HW, &priv->status);
2630 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2634 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2636 rc = iwl3945_hw_nic_init(priv);
2638 IWL_ERR(priv, "Unable to int nic\n");
2642 /* make sure rfkill handshake bits are cleared */
2643 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2644 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2645 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2647 /* clear (again), then enable host interrupts */
2648 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2649 iwl_enable_interrupts(priv);
2651 /* really make sure rfkill handshake bits are cleared */
2652 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2653 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2655 /* Copy original ucode data image from disk into backup cache.
2656 * This will be used to initialize the on-board processor's
2657 * data SRAM for a clean start when the runtime program first loads. */
2658 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2659 priv->ucode_data.len);
2661 /* We return success when we resume from suspend and rf_kill is on. */
2662 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2665 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2667 iwl_clear_stations_table(priv);
2669 /* load bootstrap state machine,
2670 * load bootstrap program into processor's memory,
2671 * prepare to load the "initialize" uCode */
2672 priv->cfg->ops->lib->load_ucode(priv);
2676 "Unable to set up bootstrap uCode: %d\n", rc);
2680 /* start card; "initialize" will load runtime ucode */
2681 iwl3945_nic_start(priv);
2683 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2688 set_bit(STATUS_EXIT_PENDING, &priv->status);
2689 __iwl3945_down(priv);
2690 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2692 /* tried to restart and config the device for as long as our
2693 * patience could withstand */
2694 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2699 /*****************************************************************************
2701 * Workqueue callbacks
2703 *****************************************************************************/
2705 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2707 struct iwl_priv *priv =
2708 container_of(data, struct iwl_priv, init_alive_start.work);
2710 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2713 mutex_lock(&priv->mutex);
2714 iwl3945_init_alive_start(priv);
2715 mutex_unlock(&priv->mutex);
2718 static void iwl3945_bg_alive_start(struct work_struct *data)
2720 struct iwl_priv *priv =
2721 container_of(data, struct iwl_priv, alive_start.work);
2723 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2726 mutex_lock(&priv->mutex);
2727 iwl3945_alive_start(priv);
2728 mutex_unlock(&priv->mutex);
2731 static void iwl3945_rfkill_poll(struct work_struct *data)
2733 struct iwl_priv *priv =
2734 container_of(data, struct iwl_priv, rfkill_poll.work);
2736 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2737 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2739 set_bit(STATUS_RF_KILL_HW, &priv->status);
2741 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
2742 test_bit(STATUS_RF_KILL_HW, &priv->status));
2744 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
2745 round_jiffies_relative(2 * HZ));
2749 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
2750 static void iwl3945_bg_request_scan(struct work_struct *data)
2752 struct iwl_priv *priv =
2753 container_of(data, struct iwl_priv, request_scan);
2754 struct iwl_host_cmd cmd = {
2755 .id = REPLY_SCAN_CMD,
2756 .len = sizeof(struct iwl3945_scan_cmd),
2757 .flags = CMD_SIZE_HUGE,
2760 struct iwl3945_scan_cmd *scan;
2761 struct ieee80211_conf *conf = NULL;
2763 enum ieee80211_band band;
2764 bool is_active = false;
2766 conf = ieee80211_get_hw_conf(priv->hw);
2768 mutex_lock(&priv->mutex);
2770 cancel_delayed_work(&priv->scan_check);
2772 if (!iwl_is_ready(priv)) {
2773 IWL_WARN(priv, "request scan called when driver not ready.\n");
2777 /* Make sure the scan wasn't canceled before this queued work
2778 * was given the chance to run... */
2779 if (!test_bit(STATUS_SCANNING, &priv->status))
2782 /* This should never be called or scheduled if there is currently
2783 * a scan active in the hardware. */
2784 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2785 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2786 "Ignoring second request.\n");
2791 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2792 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2796 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2798 "Scan request while abort pending. Queuing.\n");
2802 if (iwl_is_rfkill(priv)) {
2803 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2807 if (!test_bit(STATUS_READY, &priv->status)) {
2809 "Scan request while uninitialized. Queuing.\n");
2813 if (!priv->scan_bands) {
2814 IWL_DEBUG_HC(priv, "Aborting scan due to no requested bands\n");
2819 priv->scan = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2820 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2827 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2829 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2830 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2832 if (iwl_is_associated(priv)) {
2835 u32 suspend_time = 100;
2836 u32 scan_suspend_time = 100;
2837 unsigned long flags;
2839 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2841 spin_lock_irqsave(&priv->lock, flags);
2842 interval = priv->beacon_int;
2843 spin_unlock_irqrestore(&priv->lock, flags);
2845 scan->suspend_time = 0;
2846 scan->max_out_time = cpu_to_le32(200 * 1024);
2848 interval = suspend_time;
2850 * suspend time format:
2851 * 0-19: beacon interval in usec (time before exec.)
2853 * 24-31: number of beacons (suspend between channels)
2856 extra = (suspend_time / interval) << 24;
2857 scan_suspend_time = 0xFF0FFFFF &
2858 (extra | ((suspend_time % interval) * 1024));
2860 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2861 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2862 scan_suspend_time, interval);
2865 if (priv->scan_request->n_ssids) {
2867 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2868 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2869 /* always does wildcard anyway */
2870 if (!priv->scan_request->ssids[i].ssid_len)
2872 scan->direct_scan[p].id = WLAN_EID_SSID;
2873 scan->direct_scan[p].len =
2874 priv->scan_request->ssids[i].ssid_len;
2875 memcpy(scan->direct_scan[p].ssid,
2876 priv->scan_request->ssids[i].ssid,
2877 priv->scan_request->ssids[i].ssid_len);
2883 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2885 /* We don't build a direct scan probe request; the uCode will do
2886 * that based on the direct_mask added to each channel entry */
2887 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2888 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2889 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2891 /* flags + rate selection */
2893 if (priv->scan_bands & BIT(IEEE80211_BAND_2GHZ)) {
2894 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2895 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2896 scan->good_CRC_th = 0;
2897 band = IEEE80211_BAND_2GHZ;
2898 } else if (priv->scan_bands & BIT(IEEE80211_BAND_5GHZ)) {
2899 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2901 * If active scaning is requested but a certain channel
2902 * is marked passive, we can do active scanning if we
2903 * detect transmissions.
2905 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH : 0;
2906 band = IEEE80211_BAND_5GHZ;
2908 IWL_WARN(priv, "Invalid scan band count\n");
2912 scan->tx_cmd.len = cpu_to_le16(
2913 iwl_fill_probe_req(priv,
2914 (struct ieee80211_mgmt *)scan->data,
2915 priv->scan_request->ie,
2916 priv->scan_request->ie_len,
2917 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2919 /* select Rx antennas */
2920 scan->flags |= iwl3945_get_antenna_flags(priv);
2922 if (iwl_is_monitor_mode(priv))
2923 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
2925 scan->channel_count =
2926 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2927 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
2929 if (scan->channel_count == 0) {
2930 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
2934 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
2935 scan->channel_count * sizeof(struct iwl3945_scan_channel);
2937 scan->len = cpu_to_le16(cmd.len);
2939 set_bit(STATUS_SCAN_HW, &priv->status);
2940 rc = iwl_send_cmd_sync(priv, &cmd);
2944 queue_delayed_work(priv->workqueue, &priv->scan_check,
2945 IWL_SCAN_CHECK_WATCHDOG);
2947 mutex_unlock(&priv->mutex);
2951 /* can not perform scan make sure we clear scanning
2952 * bits from status so next scan request can be performed.
2953 * if we dont clear scanning status bit here all next scan
2956 clear_bit(STATUS_SCAN_HW, &priv->status);
2957 clear_bit(STATUS_SCANNING, &priv->status);
2959 /* inform mac80211 scan aborted */
2960 queue_work(priv->workqueue, &priv->scan_completed);
2961 mutex_unlock(&priv->mutex);
2964 static void iwl3945_bg_up(struct work_struct *data)
2966 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2968 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2971 mutex_lock(&priv->mutex);
2973 mutex_unlock(&priv->mutex);
2976 static void iwl3945_bg_restart(struct work_struct *data)
2978 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2980 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2983 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2984 mutex_lock(&priv->mutex);
2987 mutex_unlock(&priv->mutex);
2989 ieee80211_restart_hw(priv->hw);
2992 queue_work(priv->workqueue, &priv->up);
2996 static void iwl3945_bg_rx_replenish(struct work_struct *data)
2998 struct iwl_priv *priv =
2999 container_of(data, struct iwl_priv, rx_replenish);
3001 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3004 mutex_lock(&priv->mutex);
3005 iwl3945_rx_replenish(priv);
3006 mutex_unlock(&priv->mutex);
3009 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3011 void iwl3945_post_associate(struct iwl_priv *priv)
3014 struct ieee80211_conf *conf = NULL;
3016 if (priv->iw_mode == NL80211_IFTYPE_AP) {
3017 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3022 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3023 priv->assoc_id, priv->active_rxon.bssid_addr);
3025 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3028 if (!priv->vif || !priv->is_open)
3031 iwl_scan_cancel_timeout(priv, 200);
3033 conf = ieee80211_get_hw_conf(priv->hw);
3035 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3036 iwlcore_commit_rxon(priv);
3038 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3039 iwl_setup_rxon_timing(priv);
3040 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3041 sizeof(priv->rxon_timing), &priv->rxon_timing);
3043 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3044 "Attempting to continue.\n");
3046 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3048 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3050 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3051 priv->assoc_id, priv->beacon_int);
3053 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3054 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3056 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3058 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3059 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3060 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3062 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3064 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3065 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3069 iwlcore_commit_rxon(priv);
3071 switch (priv->iw_mode) {
3072 case NL80211_IFTYPE_STATION:
3073 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3076 case NL80211_IFTYPE_ADHOC:
3079 iwl_add_station(priv, priv->bssid, 0, CMD_SYNC, NULL);
3080 iwl3945_sync_sta(priv, IWL_STA_ID,
3081 (priv->band == IEEE80211_BAND_5GHZ) ?
3082 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP,
3084 iwl3945_rate_scale_init(priv->hw, IWL_STA_ID);
3085 iwl3945_send_beacon_cmd(priv);
3090 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3091 __func__, priv->iw_mode);
3095 iwl_activate_qos(priv, 0);
3097 /* we have just associated, don't start scan too early */
3098 priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
3101 /*****************************************************************************
3103 * mac80211 entry point functions
3105 *****************************************************************************/
3107 #define UCODE_READY_TIMEOUT (2 * HZ)
3109 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3111 struct iwl_priv *priv = hw->priv;
3114 IWL_DEBUG_MAC80211(priv, "enter\n");
3116 /* we should be verifying the device is ready to be opened */
3117 mutex_lock(&priv->mutex);
3119 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3120 * ucode filename and max sizes are card-specific. */
3122 if (!priv->ucode_code.len) {
3123 ret = iwl3945_read_ucode(priv);
3125 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3126 mutex_unlock(&priv->mutex);
3127 goto out_release_irq;
3131 ret = __iwl3945_up(priv);
3133 mutex_unlock(&priv->mutex);
3136 goto out_release_irq;
3138 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3140 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3141 * mac80211 will not be run successfully. */
3142 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3143 test_bit(STATUS_READY, &priv->status),
3144 UCODE_READY_TIMEOUT);
3146 if (!test_bit(STATUS_READY, &priv->status)) {
3148 "Wait for START_ALIVE timeout after %dms.\n",
3149 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3151 goto out_release_irq;
3155 /* ucode is running and will send rfkill notifications,
3156 * no need to poll the killswitch state anymore */
3157 cancel_delayed_work(&priv->rfkill_poll);
3160 IWL_DEBUG_MAC80211(priv, "leave\n");
3165 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3169 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3171 struct iwl_priv *priv = hw->priv;
3173 IWL_DEBUG_MAC80211(priv, "enter\n");
3175 if (!priv->is_open) {
3176 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3182 if (iwl_is_ready_rf(priv)) {
3183 /* stop mac, cancel any scan request and clear
3184 * RXON_FILTER_ASSOC_MSK BIT
3186 mutex_lock(&priv->mutex);
3187 iwl_scan_cancel_timeout(priv, 100);
3188 mutex_unlock(&priv->mutex);
3193 flush_workqueue(priv->workqueue);
3195 /* start polling the killswitch state again */
3196 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
3197 round_jiffies_relative(2 * HZ));
3199 IWL_DEBUG_MAC80211(priv, "leave\n");
3202 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3204 struct iwl_priv *priv = hw->priv;
3206 IWL_DEBUG_MAC80211(priv, "enter\n");
3208 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3209 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3211 if (iwl3945_tx_skb(priv, skb))
3212 dev_kfree_skb_any(skb);
3214 IWL_DEBUG_MAC80211(priv, "leave\n");
3215 return NETDEV_TX_OK;
3218 void iwl3945_config_ap(struct iwl_priv *priv)
3222 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3225 /* The following should be done only at AP bring up */
3226 if (!(iwl_is_associated(priv))) {
3228 /* RXON - unassoc (to set timing command) */
3229 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3230 iwlcore_commit_rxon(priv);
3233 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3234 iwl_setup_rxon_timing(priv);
3235 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3236 sizeof(priv->rxon_timing),
3237 &priv->rxon_timing);
3239 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3240 "Attempting to continue.\n");
3242 /* FIXME: what should be the assoc_id for AP? */
3243 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3244 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3245 priv->staging_rxon.flags |=
3246 RXON_FLG_SHORT_PREAMBLE_MSK;
3248 priv->staging_rxon.flags &=
3249 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3251 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3252 if (priv->assoc_capability &
3253 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3254 priv->staging_rxon.flags |=
3255 RXON_FLG_SHORT_SLOT_MSK;
3257 priv->staging_rxon.flags &=
3258 ~RXON_FLG_SHORT_SLOT_MSK;
3260 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
3261 priv->staging_rxon.flags &=
3262 ~RXON_FLG_SHORT_SLOT_MSK;
3264 /* restore RXON assoc */
3265 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3266 iwlcore_commit_rxon(priv);
3267 iwl_add_station(priv, iwl_bcast_addr, 0, CMD_SYNC, NULL);
3269 iwl3945_send_beacon_cmd(priv);
3271 /* FIXME - we need to add code here to detect a totally new
3272 * configuration, reset the AP, unassoc, rxon timing, assoc,
3273 * clear sta table, add BCAST sta... */
3276 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3277 struct ieee80211_vif *vif,
3278 struct ieee80211_sta *sta,
3279 struct ieee80211_key_conf *key)
3281 struct iwl_priv *priv = hw->priv;
3284 u8 sta_id = IWL_INVALID_STATION;
3287 IWL_DEBUG_MAC80211(priv, "enter\n");
3289 if (iwl3945_mod_params.sw_crypto) {
3290 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3294 addr = sta ? sta->addr : iwl_bcast_addr;
3295 static_key = !iwl_is_associated(priv);
3298 sta_id = iwl_find_station(priv, addr);
3299 if (sta_id == IWL_INVALID_STATION) {
3300 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
3306 mutex_lock(&priv->mutex);
3307 iwl_scan_cancel_timeout(priv, 100);
3308 mutex_unlock(&priv->mutex);
3313 ret = iwl3945_set_static_key(priv, key);
3315 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3316 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3320 ret = iwl3945_remove_static_key(priv);
3322 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3323 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3329 IWL_DEBUG_MAC80211(priv, "leave\n");
3334 /*****************************************************************************
3338 *****************************************************************************/
3340 #ifdef CONFIG_IWLWIFI_DEBUG
3343 * The following adds a new attribute to the sysfs representation
3344 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3345 * used for controlling the debug level.
3347 * See the level definitions in iwl for details.
3349 * The debug_level being managed using sysfs below is a per device debug
3350 * level that is used instead of the global debug level if it (the per
3351 * device debug level) is set.
3353 static ssize_t show_debug_level(struct device *d,
3354 struct device_attribute *attr, char *buf)
3356 struct iwl_priv *priv = dev_get_drvdata(d);
3357 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3359 static ssize_t store_debug_level(struct device *d,
3360 struct device_attribute *attr,
3361 const char *buf, size_t count)
3363 struct iwl_priv *priv = dev_get_drvdata(d);
3367 ret = strict_strtoul(buf, 0, &val);
3369 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3371 priv->debug_level = val;
3372 if (iwl_alloc_traffic_mem(priv))
3374 "Not enough memory to generate traffic log\n");
3376 return strnlen(buf, count);
3379 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3380 show_debug_level, store_debug_level);
3382 #endif /* CONFIG_IWLWIFI_DEBUG */
3384 static ssize_t show_temperature(struct device *d,
3385 struct device_attribute *attr, char *buf)
3387 struct iwl_priv *priv = dev_get_drvdata(d);
3389 if (!iwl_is_alive(priv))
3392 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3395 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3397 static ssize_t show_tx_power(struct device *d,
3398 struct device_attribute *attr, char *buf)
3400 struct iwl_priv *priv = dev_get_drvdata(d);
3401 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3404 static ssize_t store_tx_power(struct device *d,
3405 struct device_attribute *attr,
3406 const char *buf, size_t count)
3408 struct iwl_priv *priv = dev_get_drvdata(d);
3409 char *p = (char *)buf;
3412 val = simple_strtoul(p, &p, 10);
3414 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3416 iwl3945_hw_reg_set_txpower(priv, val);
3421 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3423 static ssize_t show_flags(struct device *d,
3424 struct device_attribute *attr, char *buf)
3426 struct iwl_priv *priv = dev_get_drvdata(d);
3428 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3431 static ssize_t store_flags(struct device *d,
3432 struct device_attribute *attr,
3433 const char *buf, size_t count)
3435 struct iwl_priv *priv = dev_get_drvdata(d);
3436 u32 flags = simple_strtoul(buf, NULL, 0);
3438 mutex_lock(&priv->mutex);
3439 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3440 /* Cancel any currently running scans... */
3441 if (iwl_scan_cancel_timeout(priv, 100))
3442 IWL_WARN(priv, "Could not cancel scan.\n");
3444 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3446 priv->staging_rxon.flags = cpu_to_le32(flags);
3447 iwlcore_commit_rxon(priv);
3450 mutex_unlock(&priv->mutex);
3455 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3457 static ssize_t show_filter_flags(struct device *d,
3458 struct device_attribute *attr, char *buf)
3460 struct iwl_priv *priv = dev_get_drvdata(d);
3462 return sprintf(buf, "0x%04X\n",
3463 le32_to_cpu(priv->active_rxon.filter_flags));
3466 static ssize_t store_filter_flags(struct device *d,
3467 struct device_attribute *attr,
3468 const char *buf, size_t count)
3470 struct iwl_priv *priv = dev_get_drvdata(d);
3471 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3473 mutex_lock(&priv->mutex);
3474 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3475 /* Cancel any currently running scans... */
3476 if (iwl_scan_cancel_timeout(priv, 100))
3477 IWL_WARN(priv, "Could not cancel scan.\n");
3479 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3480 "0x%04X\n", filter_flags);
3481 priv->staging_rxon.filter_flags =
3482 cpu_to_le32(filter_flags);
3483 iwlcore_commit_rxon(priv);
3486 mutex_unlock(&priv->mutex);
3491 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3492 store_filter_flags);
3494 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3496 static ssize_t show_measurement(struct device *d,
3497 struct device_attribute *attr, char *buf)
3499 struct iwl_priv *priv = dev_get_drvdata(d);
3500 struct iwl_spectrum_notification measure_report;
3501 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3502 u8 *data = (u8 *)&measure_report;
3503 unsigned long flags;
3505 spin_lock_irqsave(&priv->lock, flags);
3506 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3507 spin_unlock_irqrestore(&priv->lock, flags);
3510 memcpy(&measure_report, &priv->measure_report, size);
3511 priv->measurement_status = 0;
3512 spin_unlock_irqrestore(&priv->lock, flags);
3514 while (size && (PAGE_SIZE - len)) {
3515 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3516 PAGE_SIZE - len, 1);
3518 if (PAGE_SIZE - len)
3522 size -= min(size, 16U);
3528 static ssize_t store_measurement(struct device *d,
3529 struct device_attribute *attr,
3530 const char *buf, size_t count)
3532 struct iwl_priv *priv = dev_get_drvdata(d);
3533 struct ieee80211_measurement_params params = {
3534 .channel = le16_to_cpu(priv->active_rxon.channel),
3535 .start_time = cpu_to_le64(priv->last_tsf),
3536 .duration = cpu_to_le16(1),
3538 u8 type = IWL_MEASURE_BASIC;
3544 strncpy(buffer, buf, min(sizeof(buffer), count));
3545 channel = simple_strtoul(p, NULL, 0);
3547 params.channel = channel;
3550 while (*p && *p != ' ')
3553 type = simple_strtoul(p + 1, NULL, 0);
3556 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3557 "channel %d (for '%s')\n", type, params.channel, buf);
3558 iwl3945_get_measurement(priv, ¶ms, type);
3563 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3564 show_measurement, store_measurement);
3565 #endif /* CONFIG_IWL3945_SPECTRUM_MEASUREMENT */
3567 static ssize_t store_retry_rate(struct device *d,
3568 struct device_attribute *attr,
3569 const char *buf, size_t count)
3571 struct iwl_priv *priv = dev_get_drvdata(d);
3573 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3574 if (priv->retry_rate <= 0)
3575 priv->retry_rate = 1;
3580 static ssize_t show_retry_rate(struct device *d,
3581 struct device_attribute *attr, char *buf)
3583 struct iwl_priv *priv = dev_get_drvdata(d);
3584 return sprintf(buf, "%d", priv->retry_rate);
3587 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3591 static ssize_t show_channels(struct device *d,
3592 struct device_attribute *attr, char *buf)
3594 /* all this shit doesn't belong into sysfs anyway */
3598 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3600 static ssize_t show_statistics(struct device *d,
3601 struct device_attribute *attr, char *buf)
3603 struct iwl_priv *priv = dev_get_drvdata(d);
3604 u32 size = sizeof(struct iwl3945_notif_statistics);
3605 u32 len = 0, ofs = 0;
3606 u8 *data = (u8 *)&priv->statistics_39;
3609 if (!iwl_is_alive(priv))
3612 mutex_lock(&priv->mutex);
3613 rc = iwl_send_statistics_request(priv, 0);
3614 mutex_unlock(&priv->mutex);
3618 "Error sending statistics request: 0x%08X\n", rc);
3622 while (size && (PAGE_SIZE - len)) {
3623 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3624 PAGE_SIZE - len, 1);
3626 if (PAGE_SIZE - len)
3630 size -= min(size, 16U);
3636 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3638 static ssize_t show_antenna(struct device *d,
3639 struct device_attribute *attr, char *buf)
3641 struct iwl_priv *priv = dev_get_drvdata(d);
3643 if (!iwl_is_alive(priv))
3646 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3649 static ssize_t store_antenna(struct device *d,
3650 struct device_attribute *attr,
3651 const char *buf, size_t count)
3653 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3659 if (sscanf(buf, "%1i", &ant) != 1) {
3660 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3664 if ((ant >= 0) && (ant <= 2)) {
3665 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3666 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3668 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3674 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3676 static ssize_t show_status(struct device *d,
3677 struct device_attribute *attr, char *buf)
3679 struct iwl_priv *priv = dev_get_drvdata(d);
3680 if (!iwl_is_alive(priv))
3682 return sprintf(buf, "0x%08x\n", (int)priv->status);
3685 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3687 static ssize_t dump_error_log(struct device *d,
3688 struct device_attribute *attr,
3689 const char *buf, size_t count)
3691 struct iwl_priv *priv = dev_get_drvdata(d);
3692 char *p = (char *)buf;
3695 iwl3945_dump_nic_error_log(priv);
3697 return strnlen(buf, count);
3700 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3702 /*****************************************************************************
3704 * driver setup and tear down
3706 *****************************************************************************/
3708 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3710 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3712 init_waitqueue_head(&priv->wait_command_queue);
3714 INIT_WORK(&priv->up, iwl3945_bg_up);
3715 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3716 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3717 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3718 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3719 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3720 INIT_DELAYED_WORK(&priv->rfkill_poll, iwl3945_rfkill_poll);
3721 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3722 INIT_WORK(&priv->request_scan, iwl3945_bg_request_scan);
3723 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3724 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3726 iwl3945_hw_setup_deferred_work(priv);
3728 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3729 iwl3945_irq_tasklet, (unsigned long)priv);
3732 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3734 iwl3945_hw_cancel_deferred_work(priv);
3736 cancel_delayed_work_sync(&priv->init_alive_start);
3737 cancel_delayed_work(&priv->scan_check);
3738 cancel_delayed_work(&priv->alive_start);
3739 cancel_work_sync(&priv->beacon_update);
3742 static struct attribute *iwl3945_sysfs_entries[] = {
3743 &dev_attr_antenna.attr,
3744 &dev_attr_channels.attr,
3745 &dev_attr_dump_errors.attr,
3746 &dev_attr_flags.attr,
3747 &dev_attr_filter_flags.attr,
3748 #ifdef CONFIG_IWL3945_SPECTRUM_MEASUREMENT
3749 &dev_attr_measurement.attr,
3751 &dev_attr_retry_rate.attr,
3752 &dev_attr_statistics.attr,
3753 &dev_attr_status.attr,
3754 &dev_attr_temperature.attr,
3755 &dev_attr_tx_power.attr,
3756 #ifdef CONFIG_IWLWIFI_DEBUG
3757 &dev_attr_debug_level.attr,
3762 static struct attribute_group iwl3945_attribute_group = {
3763 .name = NULL, /* put in device directory */
3764 .attrs = iwl3945_sysfs_entries,
3767 static struct ieee80211_ops iwl3945_hw_ops = {
3768 .tx = iwl3945_mac_tx,
3769 .start = iwl3945_mac_start,
3770 .stop = iwl3945_mac_stop,
3771 .add_interface = iwl_mac_add_interface,
3772 .remove_interface = iwl_mac_remove_interface,
3773 .config = iwl_mac_config,
3774 .configure_filter = iwl_configure_filter,
3775 .set_key = iwl3945_mac_set_key,
3776 .get_tx_stats = iwl_mac_get_tx_stats,
3777 .conf_tx = iwl_mac_conf_tx,
3778 .reset_tsf = iwl_mac_reset_tsf,
3779 .bss_info_changed = iwl_bss_info_changed,
3780 .hw_scan = iwl_mac_hw_scan
3783 static int iwl3945_init_drv(struct iwl_priv *priv)
3786 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3788 priv->retry_rate = 1;
3789 priv->ibss_beacon = NULL;
3791 spin_lock_init(&priv->lock);
3792 spin_lock_init(&priv->sta_lock);
3793 spin_lock_init(&priv->hcmd_lock);
3795 INIT_LIST_HEAD(&priv->free_frames);
3797 mutex_init(&priv->mutex);
3799 /* Clear the driver's (not device's) station table */
3800 iwl_clear_stations_table(priv);
3802 priv->data_retry_limit = -1;
3803 priv->ieee_channels = NULL;
3804 priv->ieee_rates = NULL;
3805 priv->band = IEEE80211_BAND_2GHZ;
3807 priv->iw_mode = NL80211_IFTYPE_STATION;
3809 iwl_reset_qos(priv);
3811 priv->qos_data.qos_active = 0;
3812 priv->qos_data.qos_cap.val = 0;
3814 priv->rates_mask = IWL_RATES_MASK;
3815 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3817 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3818 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3823 ret = iwl_init_channel_map(priv);
3825 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3829 /* Set up txpower settings in driver for all channels */
3830 if (iwl3945_txpower_set_from_eeprom(priv)) {
3832 goto err_free_channel_map;
3835 ret = iwlcore_init_geos(priv);
3837 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3838 goto err_free_channel_map;
3840 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3844 err_free_channel_map:
3845 iwl_free_channel_map(priv);
3850 static int iwl3945_setup_mac(struct iwl_priv *priv)
3853 struct ieee80211_hw *hw = priv->hw;
3855 hw->rate_control_algorithm = "iwl-3945-rs";
3856 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3858 /* Tell mac80211 our characteristics */
3859 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3860 IEEE80211_HW_NOISE_DBM |
3861 IEEE80211_HW_SPECTRUM_MGMT |
3862 IEEE80211_HW_SUPPORTS_PS |
3863 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3865 hw->wiphy->interface_modes =
3866 BIT(NL80211_IFTYPE_STATION) |
3867 BIT(NL80211_IFTYPE_ADHOC);
3869 hw->wiphy->custom_regulatory = true;
3871 /* Firmware does not support this */
3872 hw->wiphy->disable_beacon_hints = true;
3874 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3875 /* we create the 802.11 header and a zero-length SSID element */
3876 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
3878 /* Default value; 4 EDCA QOS priorities */
3881 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3882 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3883 &priv->bands[IEEE80211_BAND_2GHZ];
3885 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3886 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3887 &priv->bands[IEEE80211_BAND_5GHZ];
3889 ret = ieee80211_register_hw(priv->hw);
3891 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3894 priv->mac80211_registered = 1;
3899 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3902 struct iwl_priv *priv;
3903 struct ieee80211_hw *hw;
3904 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3905 struct iwl3945_eeprom *eeprom;
3906 unsigned long flags;
3908 /***********************
3909 * 1. Allocating HW data
3910 * ********************/
3912 /* mac80211 allocates memory for this device instance, including
3913 * space for this driver's private structure */
3914 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3916 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3921 SET_IEEE80211_DEV(hw, &pdev->dev);
3924 * Disabling hardware scan means that mac80211 will perform scans
3925 * "the hard way", rather than using device's scan.
3927 if (iwl3945_mod_params.disable_hw_scan) {
3928 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3929 iwl3945_hw_ops.hw_scan = NULL;
3933 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3935 priv->pci_dev = pdev;
3936 priv->inta_mask = CSR_INI_SET_MASK;
3938 #ifdef CONFIG_IWLWIFI_DEBUG
3939 atomic_set(&priv->restrict_refcnt, 0);
3941 if (iwl_alloc_traffic_mem(priv))
3942 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3944 /***************************
3945 * 2. Initializing PCI bus
3946 * *************************/
3947 if (pci_enable_device(pdev)) {
3949 goto out_ieee80211_free_hw;
3952 pci_set_master(pdev);
3954 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3956 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3958 IWL_WARN(priv, "No suitable DMA available.\n");
3959 goto out_pci_disable_device;
3962 pci_set_drvdata(pdev, priv);
3963 err = pci_request_regions(pdev, DRV_NAME);
3965 goto out_pci_disable_device;
3967 /***********************
3968 * 3. Read REV Register
3969 * ********************/
3970 priv->hw_base = pci_iomap(pdev, 0, 0);
3971 if (!priv->hw_base) {
3973 goto out_pci_release_regions;
3976 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3977 (unsigned long long) pci_resource_len(pdev, 0));
3978 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3980 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3981 * PCI Tx retries from interfering with C3 CPU state */
3982 pci_write_config_byte(pdev, 0x41, 0x00);
3984 /* this spin lock will be used in apm_ops.init and EEPROM access
3985 * we should init now
3987 spin_lock_init(&priv->reg_lock);
3990 err = priv->cfg->ops->lib->apm_ops.init(priv);
3992 IWL_DEBUG_INFO(priv, "Failed to init the card\n");
3996 /***********************
3998 * ********************/
4000 /* Read the EEPROM */
4001 err = iwl_eeprom_init(priv);
4003 IWL_ERR(priv, "Unable to init EEPROM\n");
4006 /* MAC Address location in EEPROM same for 3945/4965 */
4007 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4008 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4009 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4010 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4012 /***********************
4013 * 5. Setup HW Constants
4014 * ********************/
4015 /* Device-specific setup */
4016 if (iwl3945_hw_set_hw_params(priv)) {
4017 IWL_ERR(priv, "failed to set hw settings\n");
4018 goto out_eeprom_free;
4021 /***********************
4023 * ********************/
4025 err = iwl3945_init_drv(priv);
4027 IWL_ERR(priv, "initializing driver failed\n");
4028 goto out_unset_hw_params;
4031 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4034 /***********************
4036 * ********************/
4038 spin_lock_irqsave(&priv->lock, flags);
4039 iwl_disable_interrupts(priv);
4040 spin_unlock_irqrestore(&priv->lock, flags);
4042 pci_enable_msi(priv->pci_dev);
4044 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4045 IRQF_SHARED, DRV_NAME, priv);
4047 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4048 goto out_disable_msi;
4051 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4053 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4054 goto out_release_irq;
4057 iwl_set_rxon_channel(priv,
4058 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4059 iwl3945_setup_deferred_work(priv);
4060 iwl3945_setup_rx_handlers(priv);
4062 /*********************************
4063 * 8. Setup and Register mac80211
4064 * *******************************/
4066 iwl_enable_interrupts(priv);
4068 err = iwl3945_setup_mac(priv);
4070 goto out_remove_sysfs;
4072 err = iwl_dbgfs_register(priv, DRV_NAME);
4074 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4076 /* Start monitoring the killswitch */
4077 queue_delayed_work(priv->workqueue, &priv->rfkill_poll,
4083 destroy_workqueue(priv->workqueue);
4084 priv->workqueue = NULL;
4085 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4087 free_irq(priv->pci_dev->irq, priv);
4089 pci_disable_msi(priv->pci_dev);
4090 iwlcore_free_geos(priv);
4091 iwl_free_channel_map(priv);
4092 out_unset_hw_params:
4093 iwl3945_unset_hw_params(priv);
4095 iwl_eeprom_free(priv);
4097 pci_iounmap(pdev, priv->hw_base);
4098 out_pci_release_regions:
4099 pci_release_regions(pdev);
4100 out_pci_disable_device:
4101 pci_set_drvdata(pdev, NULL);
4102 pci_disable_device(pdev);
4103 out_ieee80211_free_hw:
4104 ieee80211_free_hw(priv->hw);
4105 iwl_free_traffic_mem(priv);
4110 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4112 struct iwl_priv *priv = pci_get_drvdata(pdev);
4113 unsigned long flags;
4118 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4120 iwl_dbgfs_unregister(priv);
4122 set_bit(STATUS_EXIT_PENDING, &priv->status);
4124 if (priv->mac80211_registered) {
4125 ieee80211_unregister_hw(priv->hw);
4126 priv->mac80211_registered = 0;
4131 /* make sure we flush any pending irq or
4132 * tasklet for the driver
4134 spin_lock_irqsave(&priv->lock, flags);
4135 iwl_disable_interrupts(priv);
4136 spin_unlock_irqrestore(&priv->lock, flags);
4138 iwl_synchronize_irq(priv);
4140 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4142 cancel_delayed_work_sync(&priv->rfkill_poll);
4144 iwl3945_dealloc_ucode_pci(priv);
4147 iwl3945_rx_queue_free(priv, &priv->rxq);
4148 iwl3945_hw_txq_ctx_free(priv);
4150 iwl3945_unset_hw_params(priv);
4151 iwl_clear_stations_table(priv);
4153 /*netif_stop_queue(dev); */
4154 flush_workqueue(priv->workqueue);
4156 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4157 * priv->workqueue... so we can't take down the workqueue
4159 destroy_workqueue(priv->workqueue);
4160 priv->workqueue = NULL;
4161 iwl_free_traffic_mem(priv);
4163 free_irq(pdev->irq, priv);
4164 pci_disable_msi(pdev);
4166 pci_iounmap(pdev, priv->hw_base);
4167 pci_release_regions(pdev);
4168 pci_disable_device(pdev);
4169 pci_set_drvdata(pdev, NULL);
4171 iwl_free_channel_map(priv);
4172 iwlcore_free_geos(priv);
4174 if (priv->ibss_beacon)
4175 dev_kfree_skb(priv->ibss_beacon);
4177 ieee80211_free_hw(priv->hw);
4181 /*****************************************************************************
4183 * driver and module entry point
4185 *****************************************************************************/
4187 static struct pci_driver iwl3945_driver = {
4189 .id_table = iwl3945_hw_card_ids,
4190 .probe = iwl3945_pci_probe,
4191 .remove = __devexit_p(iwl3945_pci_remove),
4193 .suspend = iwl_pci_suspend,
4194 .resume = iwl_pci_resume,
4198 static int __init iwl3945_init(void)
4202 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4203 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4205 ret = iwl3945_rate_control_register();
4207 printk(KERN_ERR DRV_NAME
4208 "Unable to register rate control algorithm: %d\n", ret);
4212 ret = pci_register_driver(&iwl3945_driver);
4214 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4215 goto error_register;
4221 iwl3945_rate_control_unregister();
4225 static void __exit iwl3945_exit(void)
4227 pci_unregister_driver(&iwl3945_driver);
4228 iwl3945_rate_control_unregister();
4231 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4233 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4234 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4235 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4236 MODULE_PARM_DESC(swcrypto,
4237 "using software crypto (default 1 [software])\n");
4238 #ifdef CONFIG_IWLWIFI_DEBUG
4239 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4240 MODULE_PARM_DESC(debug, "debug output mask");
4242 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4244 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4245 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4246 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4248 module_exit(iwl3945_exit);
4249 module_init(iwl3945_init);