1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/slab.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/delay.h>
37 #include <linux/sched.h>
38 #include <linux/skbuff.h>
39 #include <linux/netdevice.h>
40 #include <linux/wireless.h>
41 #include <linux/firmware.h>
42 #include <linux/etherdevice.h>
43 #include <linux/if_arp.h>
45 #include <net/ieee80211_radiotap.h>
46 #include <net/mac80211.h>
48 #include <asm/div64.h>
50 #define DRV_NAME "iwl3945"
53 #include "iwl-3945-fh.h"
54 #include "iwl-commands.h"
58 #include "iwl-helpers.h"
60 #include "iwl-spectrum.h"
63 * module name, copyright, version, etc.
66 #define DRV_DESCRIPTION \
67 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
69 #ifdef CONFIG_IWLWIFI_DEBUG
76 * add "s" to indicate spectrum measurement included.
77 * we add it here to be consistent with previous releases in which
78 * this was configurable.
80 #define DRV_VERSION IWLWIFI_VERSION VD "s"
81 #define DRV_COPYRIGHT "Copyright(c) 2003-2010 Intel Corporation"
82 #define DRV_AUTHOR "<ilw@linux.intel.com>"
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
87 MODULE_LICENSE("GPL");
89 /* module parameters */
90 struct iwl_mod_params iwl3945_mod_params = {
93 /* the rest are 0 by default */
97 * iwl3945_get_antenna_flags - Get antenna flags for RXON command
98 * @priv: eeprom and antenna fields are used to determine antenna flags
100 * priv->eeprom39 is used to determine if antenna AUX/MAIN are reversed
101 * iwl3945_mod_params.antenna specifies the antenna diversity mode:
103 * IWL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
104 * IWL_ANTENNA_MAIN - Force MAIN antenna
105 * IWL_ANTENNA_AUX - Force AUX antenna
107 __le32 iwl3945_get_antenna_flags(const struct iwl_priv *priv)
109 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
111 switch (iwl3945_mod_params.antenna) {
112 case IWL_ANTENNA_DIVERSITY:
115 case IWL_ANTENNA_MAIN:
116 if (eeprom->antenna_switch_type)
117 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
118 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
120 case IWL_ANTENNA_AUX:
121 if (eeprom->antenna_switch_type)
122 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
123 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
126 /* bad antenna selector value */
127 IWL_ERR(priv, "Bad antenna selector value (0x%x)\n",
128 iwl3945_mod_params.antenna);
130 return 0; /* "diversity" is default if error */
133 static int iwl3945_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
134 struct ieee80211_key_conf *keyconf,
138 __le16 key_flags = 0;
141 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
142 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
144 if (sta_id == priv->hw_params.bcast_sta_id)
145 key_flags |= STA_KEY_MULTICAST_MSK;
147 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
148 keyconf->hw_key_idx = keyconf->keyidx;
149 key_flags &= ~STA_KEY_FLG_INVALID;
151 spin_lock_irqsave(&priv->sta_lock, flags);
152 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
153 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
154 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
157 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
160 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
161 == STA_KEY_FLG_NO_ENC)
162 priv->stations[sta_id].sta.key.key_offset =
163 iwl_get_free_ucode_key_index(priv);
164 /* else, we are overriding an existing key => no need to allocated room
167 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
168 "no space for a new key");
170 priv->stations[sta_id].sta.key.key_flags = key_flags;
171 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
172 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
174 IWL_DEBUG_INFO(priv, "hwcrypto: modify ucode station key info\n");
176 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
178 spin_unlock_irqrestore(&priv->sta_lock, flags);
183 static int iwl3945_set_tkip_dynamic_key_info(struct iwl_priv *priv,
184 struct ieee80211_key_conf *keyconf,
190 static int iwl3945_set_wep_dynamic_key_info(struct iwl_priv *priv,
191 struct ieee80211_key_conf *keyconf,
197 static int iwl3945_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
201 spin_lock_irqsave(&priv->sta_lock, flags);
202 memset(&priv->stations[sta_id].keyinfo, 0, sizeof(struct iwl_hw_key));
203 memset(&priv->stations[sta_id].sta.key, 0,
204 sizeof(struct iwl4965_keyinfo));
205 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
206 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
207 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
208 spin_unlock_irqrestore(&priv->sta_lock, flags);
210 IWL_DEBUG_INFO(priv, "hwcrypto: clear ucode station key info\n");
211 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
215 static int iwl3945_set_dynamic_key(struct iwl_priv *priv,
216 struct ieee80211_key_conf *keyconf, u8 sta_id)
220 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
222 switch (keyconf->alg) {
224 ret = iwl3945_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
227 ret = iwl3945_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
230 ret = iwl3945_set_wep_dynamic_key_info(priv, keyconf, sta_id);
233 IWL_ERR(priv, "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
237 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
238 keyconf->alg, keyconf->keylen, keyconf->keyidx,
244 static int iwl3945_remove_static_key(struct iwl_priv *priv)
246 int ret = -EOPNOTSUPP;
251 static int iwl3945_set_static_key(struct iwl_priv *priv,
252 struct ieee80211_key_conf *key)
254 if (key->alg == ALG_WEP)
257 IWL_ERR(priv, "Static key invalid: alg %d\n", key->alg);
261 static void iwl3945_clear_free_frames(struct iwl_priv *priv)
263 struct list_head *element;
265 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
268 while (!list_empty(&priv->free_frames)) {
269 element = priv->free_frames.next;
271 kfree(list_entry(element, struct iwl3945_frame, list));
272 priv->frames_count--;
275 if (priv->frames_count) {
276 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
278 priv->frames_count = 0;
282 static struct iwl3945_frame *iwl3945_get_free_frame(struct iwl_priv *priv)
284 struct iwl3945_frame *frame;
285 struct list_head *element;
286 if (list_empty(&priv->free_frames)) {
287 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
289 IWL_ERR(priv, "Could not allocate frame!\n");
293 priv->frames_count++;
297 element = priv->free_frames.next;
299 return list_entry(element, struct iwl3945_frame, list);
302 static void iwl3945_free_frame(struct iwl_priv *priv, struct iwl3945_frame *frame)
304 memset(frame, 0, sizeof(*frame));
305 list_add(&frame->list, &priv->free_frames);
308 unsigned int iwl3945_fill_beacon_frame(struct iwl_priv *priv,
309 struct ieee80211_hdr *hdr,
313 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
314 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
315 (priv->iw_mode != NL80211_IFTYPE_AP)))
318 if (priv->ibss_beacon->len > left)
321 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
323 return priv->ibss_beacon->len;
326 static int iwl3945_send_beacon_cmd(struct iwl_priv *priv)
328 struct iwl3945_frame *frame;
329 unsigned int frame_size;
333 frame = iwl3945_get_free_frame(priv);
336 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
341 rate = iwl_rate_get_lowest_plcp(priv);
343 frame_size = iwl3945_hw_get_beacon_cmd(priv, frame, rate);
345 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
348 iwl3945_free_frame(priv, frame);
353 static void iwl3945_unset_hw_params(struct iwl_priv *priv)
355 if (priv->_3945.shared_virt)
356 dma_free_coherent(&priv->pci_dev->dev,
357 sizeof(struct iwl3945_shared),
358 priv->_3945.shared_virt,
359 priv->_3945.shared_phys);
362 static void iwl3945_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
363 struct ieee80211_tx_info *info,
364 struct iwl_device_cmd *cmd,
365 struct sk_buff *skb_frag,
368 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
369 struct iwl_hw_key *keyinfo = &priv->stations[sta_id].keyinfo;
371 switch (keyinfo->alg) {
373 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
374 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
375 IWL_DEBUG_TX(priv, "tx_cmd with AES hwcrypto\n");
382 tx_cmd->sec_ctl = TX_CMD_SEC_WEP |
383 (info->control.hw_key->hw_key_idx & TX_CMD_SEC_MSK) << TX_CMD_SEC_SHIFT;
385 if (keyinfo->keylen == 13)
386 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
388 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
390 IWL_DEBUG_TX(priv, "Configuring packet for WEP encryption "
391 "with key %d\n", info->control.hw_key->hw_key_idx);
395 IWL_ERR(priv, "Unknown encode alg %d\n", keyinfo->alg);
401 * handle build REPLY_TX command notification.
403 static void iwl3945_build_tx_cmd_basic(struct iwl_priv *priv,
404 struct iwl_device_cmd *cmd,
405 struct ieee80211_tx_info *info,
406 struct ieee80211_hdr *hdr, u8 std_id)
408 struct iwl3945_tx_cmd *tx_cmd = (struct iwl3945_tx_cmd *)cmd->cmd.payload;
409 __le32 tx_flags = tx_cmd->tx_flags;
410 __le16 fc = hdr->frame_control;
412 tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
413 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
414 tx_flags |= TX_CMD_FLG_ACK_MSK;
415 if (ieee80211_is_mgmt(fc))
416 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
417 if (ieee80211_is_probe_resp(fc) &&
418 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
419 tx_flags |= TX_CMD_FLG_TSF_MSK;
421 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
422 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
425 tx_cmd->sta_id = std_id;
426 if (ieee80211_has_morefrags(fc))
427 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
429 if (ieee80211_is_data_qos(fc)) {
430 u8 *qc = ieee80211_get_qos_ctl(hdr);
431 tx_cmd->tid_tspec = qc[0] & 0xf;
432 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
434 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
437 priv->cfg->ops->utils->rts_tx_cmd_flag(info, &tx_flags);
439 if ((tx_flags & TX_CMD_FLG_RTS_MSK) || (tx_flags & TX_CMD_FLG_CTS_MSK))
440 tx_flags |= TX_CMD_FLG_FULL_TXOP_PROT_MSK;
442 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
443 if (ieee80211_is_mgmt(fc)) {
444 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
445 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
447 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
449 tx_cmd->timeout.pm_frame_timeout = 0;
452 tx_cmd->driver_txop = 0;
453 tx_cmd->tx_flags = tx_flags;
454 tx_cmd->next_frame_len = 0;
458 * start REPLY_TX command process
460 static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
462 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
463 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
464 struct iwl3945_tx_cmd *tx_cmd;
465 struct iwl_tx_queue *txq = NULL;
466 struct iwl_queue *q = NULL;
467 struct iwl_device_cmd *out_cmd;
468 struct iwl_cmd_meta *out_meta;
469 dma_addr_t phys_addr;
470 dma_addr_t txcmd_phys;
471 int txq_id = skb_get_queue_mapping(skb);
472 u16 len, idx, len_org, hdr_len; /* TODO: len_org is not used */
479 u8 wait_write_ptr = 0;
483 spin_lock_irqsave(&priv->lock, flags);
484 if (iwl_is_rfkill(priv)) {
485 IWL_DEBUG_DROP(priv, "Dropping - RF KILL\n");
489 if ((ieee80211_get_tx_rate(priv->hw, info)->hw_value & 0xFF) == IWL_INVALID_RATE) {
490 IWL_ERR(priv, "ERROR: No TX rate available.\n");
494 unicast = !is_multicast_ether_addr(hdr->addr1);
497 fc = hdr->frame_control;
499 #ifdef CONFIG_IWLWIFI_DEBUG
500 if (ieee80211_is_auth(fc))
501 IWL_DEBUG_TX(priv, "Sending AUTH frame\n");
502 else if (ieee80211_is_assoc_req(fc))
503 IWL_DEBUG_TX(priv, "Sending ASSOC frame\n");
504 else if (ieee80211_is_reassoc_req(fc))
505 IWL_DEBUG_TX(priv, "Sending REASSOC frame\n");
508 spin_unlock_irqrestore(&priv->lock, flags);
510 hdr_len = ieee80211_hdrlen(fc);
512 /* Find index into station table for destination station */
513 if (!info->control.sta)
514 sta_id = priv->hw_params.bcast_sta_id;
516 sta_id = iwl_sta_id(info->control.sta);
517 if (sta_id == IWL_INVALID_STATION) {
518 IWL_DEBUG_DROP(priv, "Dropping - INVALID STATION: %pM\n",
523 IWL_DEBUG_RATE(priv, "station Id %d\n", sta_id);
525 if (ieee80211_is_data_qos(fc)) {
526 qc = ieee80211_get_qos_ctl(hdr);
527 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
528 if (unlikely(tid >= MAX_TID_COUNT))
530 seq_number = priv->stations[sta_id].tid[tid].seq_number &
532 hdr->seq_ctrl = cpu_to_le16(seq_number) |
534 cpu_to_le16(IEEE80211_SCTL_FRAG));
538 /* Descriptor for chosen Tx queue */
539 txq = &priv->txq[txq_id];
542 if ((iwl_queue_space(q) < q->high_mark))
545 spin_lock_irqsave(&priv->lock, flags);
547 idx = get_cmd_index(q, q->write_ptr, 0);
549 /* Set up driver data for this TFD */
550 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info));
551 txq->txb[q->write_ptr].skb[0] = skb;
553 /* Init first empty entry in queue's array of Tx/cmd buffers */
554 out_cmd = txq->cmd[idx];
555 out_meta = &txq->meta[idx];
556 tx_cmd = (struct iwl3945_tx_cmd *)out_cmd->cmd.payload;
557 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
558 memset(tx_cmd, 0, sizeof(*tx_cmd));
561 * Set up the Tx-command (not MAC!) header.
562 * Store the chosen Tx queue and TFD index within the sequence field;
563 * after Tx, uCode's Tx response will return this value so driver can
564 * locate the frame within the tx queue and do post-tx processing.
566 out_cmd->hdr.cmd = REPLY_TX;
567 out_cmd->hdr.sequence = cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) |
568 INDEX_TO_SEQ(q->write_ptr)));
570 /* Copy MAC header from skb into command buffer */
571 memcpy(tx_cmd->hdr, hdr, hdr_len);
574 if (info->control.hw_key)
575 iwl3945_build_tx_cmd_hwcrypto(priv, info, out_cmd, skb, sta_id);
577 /* TODO need this for burst mode later on */
578 iwl3945_build_tx_cmd_basic(priv, out_cmd, info, hdr, sta_id);
580 /* set is_hcca to 0; it probably will never be implemented */
581 iwl3945_hw_build_tx_cmd_rate(priv, out_cmd, info, hdr, sta_id, 0);
583 /* Total # bytes to be transmitted */
585 tx_cmd->len = cpu_to_le16(len);
587 iwl_dbg_log_tx_data_frame(priv, len, hdr);
588 iwl_update_stats(priv, true, fc, len);
589 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
590 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
592 if (!ieee80211_has_morefrags(hdr->frame_control)) {
593 txq->need_update = 1;
595 priv->stations[sta_id].tid[tid].seq_number = seq_number;
598 txq->need_update = 0;
601 IWL_DEBUG_TX(priv, "sequence nr = 0X%x\n",
602 le16_to_cpu(out_cmd->hdr.sequence));
603 IWL_DEBUG_TX(priv, "tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags));
604 iwl_print_hex_dump(priv, IWL_DL_TX, tx_cmd, sizeof(*tx_cmd));
605 iwl_print_hex_dump(priv, IWL_DL_TX, (u8 *)tx_cmd->hdr,
606 ieee80211_hdrlen(fc));
609 * Use the first empty entry in this queue's command buffer array
610 * to contain the Tx command and MAC header concatenated together
611 * (payload data will be in another buffer).
612 * Size of this varies, due to varying MAC header length.
613 * If end is not dword aligned, we'll have 2 extra bytes at the end
614 * of the MAC header (device reads on dword boundaries).
615 * We'll tell device about this padding later.
617 len = sizeof(struct iwl3945_tx_cmd) +
618 sizeof(struct iwl_cmd_header) + hdr_len;
621 len = (len + 3) & ~3;
628 /* Physical address of this Tx command's header (not MAC header!),
629 * within command buffer array. */
630 txcmd_phys = pci_map_single(priv->pci_dev, &out_cmd->hdr,
631 len, PCI_DMA_TODEVICE);
632 /* we do not map meta data ... so we can safely access address to
633 * provide to unmap command*/
634 pci_unmap_addr_set(out_meta, mapping, txcmd_phys);
635 pci_unmap_len_set(out_meta, len, len);
637 /* Add buffer containing Tx command and MAC(!) header to TFD's
639 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
640 txcmd_phys, len, 1, 0);
643 /* Set up TFD's 2nd entry to point directly to remainder of skb,
644 * if any (802.11 null frames have no payload). */
645 len = skb->len - hdr_len;
647 phys_addr = pci_map_single(priv->pci_dev, skb->data + hdr_len,
648 len, PCI_DMA_TODEVICE);
649 priv->cfg->ops->lib->txq_attach_buf_to_tfd(priv, txq,
655 /* Tell device the write index *just past* this latest filled TFD */
656 q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
657 iwl_txq_update_write_ptr(priv, txq);
658 spin_unlock_irqrestore(&priv->lock, flags);
660 if ((iwl_queue_space(q) < q->high_mark)
661 && priv->mac80211_registered) {
662 if (wait_write_ptr) {
663 spin_lock_irqsave(&priv->lock, flags);
664 txq->need_update = 1;
665 iwl_txq_update_write_ptr(priv, txq);
666 spin_unlock_irqrestore(&priv->lock, flags);
669 iwl_stop_queue(priv, skb_get_queue_mapping(skb));
675 spin_unlock_irqrestore(&priv->lock, flags);
680 #define BEACON_TIME_MASK_LOW 0x00FFFFFF
681 #define BEACON_TIME_MASK_HIGH 0xFF000000
682 #define TIME_UNIT 1024
685 * extended beacon time format
686 * time in usec will be changed into a 32-bit value in 8:24 format
687 * the high 1 byte is the beacon counts
688 * the lower 3 bytes is the time in usec within one beacon interval
691 static u32 iwl3945_usecs_to_beacons(u32 usec, u32 beacon_interval)
695 u32 interval = beacon_interval * 1024;
697 if (!interval || !usec)
700 quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
701 rem = (usec % interval) & BEACON_TIME_MASK_LOW;
703 return (quot << 24) + rem;
706 /* base is usually what we get from ucode with each received frame,
707 * the same as HW timer counter counting down
710 static __le32 iwl3945_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
712 u32 base_low = base & BEACON_TIME_MASK_LOW;
713 u32 addon_low = addon & BEACON_TIME_MASK_LOW;
714 u32 interval = beacon_interval * TIME_UNIT;
715 u32 res = (base & BEACON_TIME_MASK_HIGH) +
716 (addon & BEACON_TIME_MASK_HIGH);
718 if (base_low > addon_low)
719 res += base_low - addon_low;
720 else if (base_low < addon_low) {
721 res += interval + base_low - addon_low;
726 return cpu_to_le32(res);
729 static int iwl3945_get_measurement(struct iwl_priv *priv,
730 struct ieee80211_measurement_params *params,
733 struct iwl_spectrum_cmd spectrum;
734 struct iwl_rx_packet *pkt;
735 struct iwl_host_cmd cmd = {
736 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
737 .data = (void *)&spectrum,
738 .flags = CMD_WANT_SKB,
740 u32 add_time = le64_to_cpu(params->start_time);
742 int spectrum_resp_status;
743 int duration = le16_to_cpu(params->duration);
745 if (iwl_is_associated(priv))
747 iwl3945_usecs_to_beacons(
748 le64_to_cpu(params->start_time) - priv->_3945.last_tsf,
749 le16_to_cpu(priv->rxon_timing.beacon_interval));
751 memset(&spectrum, 0, sizeof(spectrum));
753 spectrum.channel_count = cpu_to_le16(1);
755 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
756 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
757 cmd.len = sizeof(spectrum);
758 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
760 if (iwl_is_associated(priv))
761 spectrum.start_time =
762 iwl3945_add_beacon_time(priv->_3945.last_beacon_time,
764 le16_to_cpu(priv->rxon_timing.beacon_interval));
766 spectrum.start_time = 0;
768 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
769 spectrum.channels[0].channel = params->channel;
770 spectrum.channels[0].type = type;
771 if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
772 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
773 RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
775 rc = iwl_send_cmd_sync(priv, &cmd);
779 pkt = (struct iwl_rx_packet *)cmd.reply_page;
780 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
781 IWL_ERR(priv, "Bad return from REPLY_RX_ON_ASSOC command\n");
785 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
786 switch (spectrum_resp_status) {
787 case 0: /* Command will be handled */
788 if (pkt->u.spectrum.id != 0xff) {
789 IWL_DEBUG_INFO(priv, "Replaced existing measurement: %d\n",
791 priv->measurement_status &= ~MEASUREMENT_READY;
793 priv->measurement_status |= MEASUREMENT_ACTIVE;
797 case 1: /* Command will not be handled */
802 iwl_free_pages(priv, cmd.reply_page);
807 static void iwl3945_rx_reply_alive(struct iwl_priv *priv,
808 struct iwl_rx_mem_buffer *rxb)
810 struct iwl_rx_packet *pkt = rxb_addr(rxb);
811 struct iwl_alive_resp *palive;
812 struct delayed_work *pwork;
814 palive = &pkt->u.alive_frame;
816 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
818 palive->is_valid, palive->ver_type,
819 palive->ver_subtype);
821 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
822 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
823 memcpy(&priv->card_alive_init, &pkt->u.alive_frame,
824 sizeof(struct iwl_alive_resp));
825 pwork = &priv->init_alive_start;
827 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
828 memcpy(&priv->card_alive, &pkt->u.alive_frame,
829 sizeof(struct iwl_alive_resp));
830 pwork = &priv->alive_start;
831 iwl3945_disable_events(priv);
834 /* We delay the ALIVE response by 5ms to
835 * give the HW RF Kill time to activate... */
836 if (palive->is_valid == UCODE_VALID_OK)
837 queue_delayed_work(priv->workqueue, pwork,
838 msecs_to_jiffies(5));
840 IWL_WARN(priv, "uCode did not respond OK.\n");
843 static void iwl3945_rx_reply_add_sta(struct iwl_priv *priv,
844 struct iwl_rx_mem_buffer *rxb)
846 #ifdef CONFIG_IWLWIFI_DEBUG
847 struct iwl_rx_packet *pkt = rxb_addr(rxb);
850 IWL_DEBUG_RX(priv, "Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
854 static void iwl3945_bg_beacon_update(struct work_struct *work)
856 struct iwl_priv *priv =
857 container_of(work, struct iwl_priv, beacon_update);
858 struct sk_buff *beacon;
860 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
861 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
864 IWL_ERR(priv, "update beacon failed\n");
868 mutex_lock(&priv->mutex);
869 /* new beacon skb is allocated every time; dispose previous.*/
870 if (priv->ibss_beacon)
871 dev_kfree_skb(priv->ibss_beacon);
873 priv->ibss_beacon = beacon;
874 mutex_unlock(&priv->mutex);
876 iwl3945_send_beacon_cmd(priv);
879 static void iwl3945_rx_beacon_notif(struct iwl_priv *priv,
880 struct iwl_rx_mem_buffer *rxb)
882 #ifdef CONFIG_IWLWIFI_DEBUG
883 struct iwl_rx_packet *pkt = rxb_addr(rxb);
884 struct iwl3945_beacon_notif *beacon = &(pkt->u.beacon_status);
885 u8 rate = beacon->beacon_notify_hdr.rate;
887 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
888 "tsf %d %d rate %d\n",
889 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
890 beacon->beacon_notify_hdr.failure_frame,
891 le32_to_cpu(beacon->ibss_mgr_status),
892 le32_to_cpu(beacon->high_tsf),
893 le32_to_cpu(beacon->low_tsf), rate);
896 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
897 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
898 queue_work(priv->workqueue, &priv->beacon_update);
901 /* Handle notification from uCode that card's power state is changing
902 * due to software, hardware, or critical temperature RFKILL */
903 static void iwl3945_rx_card_state_notif(struct iwl_priv *priv,
904 struct iwl_rx_mem_buffer *rxb)
906 struct iwl_rx_packet *pkt = rxb_addr(rxb);
907 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
908 unsigned long status = priv->status;
910 IWL_WARN(priv, "Card state received: HW:%s SW:%s\n",
911 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
912 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
914 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
915 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
917 if (flags & HW_CARD_DISABLED)
918 set_bit(STATUS_RF_KILL_HW, &priv->status);
920 clear_bit(STATUS_RF_KILL_HW, &priv->status);
923 iwl_scan_cancel(priv);
925 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
926 test_bit(STATUS_RF_KILL_HW, &priv->status)))
927 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
928 test_bit(STATUS_RF_KILL_HW, &priv->status));
930 wake_up_interruptible(&priv->wait_command_queue);
934 * iwl3945_setup_rx_handlers - Initialize Rx handler callbacks
936 * Setup the RX handlers for each of the reply types sent from the uCode
939 * This function chains into the hardware specific files for them to setup
940 * any hardware specific handlers as well.
942 static void iwl3945_setup_rx_handlers(struct iwl_priv *priv)
944 priv->rx_handlers[REPLY_ALIVE] = iwl3945_rx_reply_alive;
945 priv->rx_handlers[REPLY_ADD_STA] = iwl3945_rx_reply_add_sta;
946 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
947 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
948 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
949 iwl_rx_spectrum_measure_notif;
950 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
951 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
952 iwl_rx_pm_debug_statistics_notif;
953 priv->rx_handlers[BEACON_NOTIFICATION] = iwl3945_rx_beacon_notif;
956 * The same handler is used for both the REPLY to a discrete
957 * statistics request from the host as well as for the periodic
958 * statistics notifications (after received beacons) from the uCode.
960 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl3945_reply_statistics;
961 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl3945_hw_rx_statistics;
963 iwl_setup_rx_scan_handlers(priv);
964 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl3945_rx_card_state_notif;
966 /* Set up hardware specific Rx handlers */
967 iwl3945_hw_rx_handler_setup(priv);
970 /************************** RX-FUNCTIONS ****************************/
972 * Rx theory of operation
974 * The host allocates 32 DMA target addresses and passes the host address
975 * to the firmware at register IWL_RFDS_TABLE_LOWER + N * RFD_SIZE where N is
979 * The host/firmware share two index registers for managing the Rx buffers.
981 * The READ index maps to the first position that the firmware may be writing
982 * to -- the driver can read up to (but not including) this position and get
984 * The READ index is managed by the firmware once the card is enabled.
986 * The WRITE index maps to the last position the driver has read from -- the
987 * position preceding WRITE is the last slot the firmware can place a packet.
989 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
992 * During initialization, the host sets up the READ queue position to the first
993 * INDEX position, and WRITE to the last (READ - 1 wrapped)
995 * When the firmware places a packet in a buffer, it will advance the READ index
996 * and fire the RX interrupt. The driver can then query the READ index and
997 * process as many packets as possible, moving the WRITE index forward as it
998 * resets the Rx queue buffers with new memory.
1000 * The management in the driver is as follows:
1001 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
1002 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
1003 * to replenish the iwl->rxq->rx_free.
1004 * + In iwl3945_rx_replenish (scheduled) if 'processed' != 'read' then the
1005 * iwl->rxq is replenished and the READ INDEX is updated (updating the
1006 * 'processed' and 'read' driver indexes as well)
1007 * + A received packet is processed and handed to the kernel network stack,
1008 * detached from the iwl->rxq. The driver 'processed' index is updated.
1009 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
1010 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
1011 * INDEX is not incremented and iwl->status(RX_STALLED) is set. If there
1012 * were enough free buffers and RX_STALLED is set it is cleared.
1017 * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
1018 * iwl3945_rx_queue_restock
1019 * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx
1020 * queue, updates firmware pointers, and updates
1021 * the WRITE index. If insufficient rx_free buffers
1022 * are available, schedules iwl3945_rx_replenish
1024 * -- enable interrupts --
1025 * ISR - iwl3945_rx() Detach iwl_rx_mem_buffers from pool up to the
1026 * READ INDEX, detaching the SKB from the pool.
1027 * Moves the packet buffer from queue to rx_used.
1028 * Calls iwl3945_rx_queue_restock to refill any empty
1035 * iwl3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
1037 static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
1038 dma_addr_t dma_addr)
1040 return cpu_to_le32((u32)dma_addr);
1044 * iwl3945_rx_queue_restock - refill RX queue from pre-allocated pool
1046 * If there are slots in the RX queue that need to be restocked,
1047 * and we have free pre-allocated buffers, fill the ranks as much
1048 * as we can, pulling from rx_free.
1050 * This moves the 'write' index forward to catch up with 'processed', and
1051 * also updates the memory address in the firmware to reference the new
1054 static void iwl3945_rx_queue_restock(struct iwl_priv *priv)
1056 struct iwl_rx_queue *rxq = &priv->rxq;
1057 struct list_head *element;
1058 struct iwl_rx_mem_buffer *rxb;
1059 unsigned long flags;
1062 spin_lock_irqsave(&rxq->lock, flags);
1063 write = rxq->write & ~0x7;
1064 while ((iwl_rx_queue_space(rxq) > 0) && (rxq->free_count)) {
1065 /* Get next free Rx buffer, remove from free list */
1066 element = rxq->rx_free.next;
1067 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1070 /* Point to Rx buffer via next RBD in circular buffer */
1071 rxq->bd[rxq->write] = iwl3945_dma_addr2rbd_ptr(priv, rxb->page_dma);
1072 rxq->queue[rxq->write] = rxb;
1073 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
1076 spin_unlock_irqrestore(&rxq->lock, flags);
1077 /* If the pre-allocated buffer pool is dropping low, schedule to
1079 if (rxq->free_count <= RX_LOW_WATERMARK)
1080 queue_work(priv->workqueue, &priv->rx_replenish);
1083 /* If we've added more space for the firmware to place data, tell it.
1084 * Increment device's write pointer in multiples of 8. */
1085 if ((rxq->write_actual != (rxq->write & ~0x7))
1086 || (abs(rxq->write - rxq->read) > 7)) {
1087 spin_lock_irqsave(&rxq->lock, flags);
1088 rxq->need_update = 1;
1089 spin_unlock_irqrestore(&rxq->lock, flags);
1090 iwl_rx_queue_update_write_ptr(priv, rxq);
1095 * iwl3945_rx_replenish - Move all used packet from rx_used to rx_free
1097 * When moving to rx_free an SKB is allocated for the slot.
1099 * Also restock the Rx queue via iwl3945_rx_queue_restock.
1100 * This is called as a scheduled work item (except for during initialization)
1102 static void iwl3945_rx_allocate(struct iwl_priv *priv, gfp_t priority)
1104 struct iwl_rx_queue *rxq = &priv->rxq;
1105 struct list_head *element;
1106 struct iwl_rx_mem_buffer *rxb;
1108 unsigned long flags;
1109 gfp_t gfp_mask = priority;
1112 spin_lock_irqsave(&rxq->lock, flags);
1114 if (list_empty(&rxq->rx_used)) {
1115 spin_unlock_irqrestore(&rxq->lock, flags);
1118 spin_unlock_irqrestore(&rxq->lock, flags);
1120 if (rxq->free_count > RX_LOW_WATERMARK)
1121 gfp_mask |= __GFP_NOWARN;
1123 if (priv->hw_params.rx_page_order > 0)
1124 gfp_mask |= __GFP_COMP;
1126 /* Alloc a new receive buffer */
1127 page = alloc_pages(gfp_mask, priv->hw_params.rx_page_order);
1129 if (net_ratelimit())
1130 IWL_DEBUG_INFO(priv, "Failed to allocate SKB buffer.\n");
1131 if ((rxq->free_count <= RX_LOW_WATERMARK) &&
1133 IWL_CRIT(priv, "Failed to allocate SKB buffer with %s. Only %u free buffers remaining.\n",
1134 priority == GFP_ATOMIC ? "GFP_ATOMIC" : "GFP_KERNEL",
1136 /* We don't reschedule replenish work here -- we will
1137 * call the restock method and if it still needs
1138 * more buffers it will schedule replenish */
1142 spin_lock_irqsave(&rxq->lock, flags);
1143 if (list_empty(&rxq->rx_used)) {
1144 spin_unlock_irqrestore(&rxq->lock, flags);
1145 __free_pages(page, priv->hw_params.rx_page_order);
1148 element = rxq->rx_used.next;
1149 rxb = list_entry(element, struct iwl_rx_mem_buffer, list);
1151 spin_unlock_irqrestore(&rxq->lock, flags);
1154 /* Get physical address of RB/SKB */
1155 rxb->page_dma = pci_map_page(priv->pci_dev, page, 0,
1156 PAGE_SIZE << priv->hw_params.rx_page_order,
1157 PCI_DMA_FROMDEVICE);
1159 spin_lock_irqsave(&rxq->lock, flags);
1161 list_add_tail(&rxb->list, &rxq->rx_free);
1163 priv->alloc_rxb_page++;
1165 spin_unlock_irqrestore(&rxq->lock, flags);
1169 void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1171 unsigned long flags;
1173 spin_lock_irqsave(&rxq->lock, flags);
1174 INIT_LIST_HEAD(&rxq->rx_free);
1175 INIT_LIST_HEAD(&rxq->rx_used);
1176 /* Fill the rx_used queue with _all_ of the Rx buffers */
1177 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1178 /* In the reset function, these buffers may have been allocated
1179 * to an SKB, so we need to unmap and free potential storage */
1180 if (rxq->pool[i].page != NULL) {
1181 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1182 PAGE_SIZE << priv->hw_params.rx_page_order,
1183 PCI_DMA_FROMDEVICE);
1184 __iwl_free_pages(priv, rxq->pool[i].page);
1185 rxq->pool[i].page = NULL;
1187 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1190 /* Set us so that we have processed and used all buffers, but have
1191 * not restocked the Rx queue with fresh buffers */
1192 rxq->read = rxq->write = 0;
1193 rxq->write_actual = 0;
1194 rxq->free_count = 0;
1195 spin_unlock_irqrestore(&rxq->lock, flags);
1198 void iwl3945_rx_replenish(void *data)
1200 struct iwl_priv *priv = data;
1201 unsigned long flags;
1203 iwl3945_rx_allocate(priv, GFP_KERNEL);
1205 spin_lock_irqsave(&priv->lock, flags);
1206 iwl3945_rx_queue_restock(priv);
1207 spin_unlock_irqrestore(&priv->lock, flags);
1210 static void iwl3945_rx_replenish_now(struct iwl_priv *priv)
1212 iwl3945_rx_allocate(priv, GFP_ATOMIC);
1214 iwl3945_rx_queue_restock(priv);
1218 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1219 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1220 * This free routine walks the list of POOL entries and if SKB is set to
1221 * non NULL it is unmapped and freed
1223 static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
1226 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1227 if (rxq->pool[i].page != NULL) {
1228 pci_unmap_page(priv->pci_dev, rxq->pool[i].page_dma,
1229 PAGE_SIZE << priv->hw_params.rx_page_order,
1230 PCI_DMA_FROMDEVICE);
1231 __iwl_free_pages(priv, rxq->pool[i].page);
1232 rxq->pool[i].page = NULL;
1236 dma_free_coherent(&priv->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1238 dma_free_coherent(&priv->pci_dev->dev, sizeof(struct iwl_rb_status),
1239 rxq->rb_stts, rxq->rb_stts_dma);
1241 rxq->rb_stts = NULL;
1245 /* Convert linear signal-to-noise ratio into dB */
1246 static u8 ratio2dB[100] = {
1247 /* 0 1 2 3 4 5 6 7 8 9 */
1248 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1249 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1250 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1251 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1252 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1253 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1254 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1255 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1256 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1257 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1260 /* Calculates a relative dB value from a ratio of linear
1261 * (i.e. not dB) signal levels.
1262 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1263 int iwl3945_calc_db_from_ratio(int sig_ratio)
1265 /* 1000:1 or higher just report as 60 dB */
1266 if (sig_ratio >= 1000)
1269 /* 100:1 or higher, divide by 10 and use table,
1270 * add 20 dB to make up for divide by 10 */
1271 if (sig_ratio >= 100)
1272 return 20 + (int)ratio2dB[sig_ratio/10];
1274 /* We shouldn't see this */
1278 /* Use table for ratios 1:1 - 99:1 */
1279 return (int)ratio2dB[sig_ratio];
1283 * iwl3945_rx_handle - Main entry function for receiving responses from uCode
1285 * Uses the priv->rx_handlers callback function array to invoke
1286 * the appropriate handlers, including command responses,
1287 * frame-received notifications, and other notifications.
1289 static void iwl3945_rx_handle(struct iwl_priv *priv)
1291 struct iwl_rx_mem_buffer *rxb;
1292 struct iwl_rx_packet *pkt;
1293 struct iwl_rx_queue *rxq = &priv->rxq;
1296 unsigned long flags;
1299 int total_empty = 0;
1301 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1302 * buffer that the driver may process (last buffer filled by ucode). */
1303 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1306 /* calculate total frames need to be restock after handling RX */
1307 total_empty = r - rxq->write_actual;
1308 if (total_empty < 0)
1309 total_empty += RX_QUEUE_SIZE;
1311 if (total_empty > (RX_QUEUE_SIZE / 2))
1313 /* Rx interrupt, but nothing sent from uCode */
1315 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1318 rxb = rxq->queue[i];
1320 /* If an RXB doesn't have a Rx queue slot associated with it,
1321 * then a bug has been introduced in the queue refilling
1322 * routines -- catch it here */
1323 BUG_ON(rxb == NULL);
1325 rxq->queue[i] = NULL;
1327 pci_unmap_page(priv->pci_dev, rxb->page_dma,
1328 PAGE_SIZE << priv->hw_params.rx_page_order,
1329 PCI_DMA_FROMDEVICE);
1330 pkt = rxb_addr(rxb);
1332 trace_iwlwifi_dev_rx(priv, pkt,
1333 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
1335 /* Reclaim a command buffer only if this packet is a response
1336 * to a (driver-originated) command.
1337 * If the packet (e.g. Rx frame) originated from uCode,
1338 * there is no command buffer to reclaim.
1339 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1340 * but apparently a few don't get set; catch them here. */
1341 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1342 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1343 (pkt->hdr.cmd != REPLY_TX);
1345 /* Based on type of command response or notification,
1346 * handle those that need handling via function in
1347 * rx_handlers table. See iwl3945_setup_rx_handlers() */
1348 if (priv->rx_handlers[pkt->hdr.cmd]) {
1349 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r, i,
1350 get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1351 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
1352 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1354 /* No handling needed */
1356 "r %d i %d No handler needed for %s, 0x%02x\n",
1357 r, i, get_cmd_string(pkt->hdr.cmd),
1362 * XXX: After here, we should always check rxb->page
1363 * against NULL before touching it or its virtual
1364 * memory (pkt). Because some rx_handler might have
1365 * already taken or freed the pages.
1369 /* Invoke any callbacks, transfer the buffer to caller,
1370 * and fire off the (possibly) blocking iwl_send_cmd()
1371 * as we reclaim the driver command queue */
1373 iwl_tx_cmd_complete(priv, rxb);
1375 IWL_WARN(priv, "Claim null rxb?\n");
1378 /* Reuse the page if possible. For notification packets and
1379 * SKBs that fail to Rx correctly, add them back into the
1380 * rx_free list for reuse later. */
1381 spin_lock_irqsave(&rxq->lock, flags);
1382 if (rxb->page != NULL) {
1383 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1384 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1385 PCI_DMA_FROMDEVICE);
1386 list_add_tail(&rxb->list, &rxq->rx_free);
1389 list_add_tail(&rxb->list, &rxq->rx_used);
1391 spin_unlock_irqrestore(&rxq->lock, flags);
1393 i = (i + 1) & RX_QUEUE_MASK;
1394 /* If there are a lot of unused frames,
1395 * restock the Rx queue so ucode won't assert. */
1400 iwl3945_rx_replenish_now(priv);
1406 /* Backtrack one entry */
1409 iwl3945_rx_replenish_now(priv);
1411 iwl3945_rx_queue_restock(priv);
1414 /* call this function to flush any scheduled tasklet */
1415 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1417 /* wait to make sure we flush pending tasklet*/
1418 synchronize_irq(priv->pci_dev->irq);
1419 tasklet_kill(&priv->irq_tasklet);
1422 static const char *desc_lookup(int i)
1430 return "BAD_CHECKSUM";
1432 return "NMI_INTERRUPT";
1436 return "FATAL_ERROR";
1442 #define ERROR_START_OFFSET (1 * sizeof(u32))
1443 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1445 void iwl3945_dump_nic_error_log(struct iwl_priv *priv)
1448 u32 desc, time, count, base, data1;
1449 u32 blink1, blink2, ilink1, ilink2;
1451 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1453 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1454 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1459 count = iwl_read_targ_mem(priv, base);
1461 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1462 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1463 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1464 priv->status, count);
1467 IWL_ERR(priv, "Desc Time asrtPC blink2 "
1468 "ilink1 nmiPC Line\n");
1469 for (i = ERROR_START_OFFSET;
1470 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1471 i += ERROR_ELEM_SIZE) {
1472 desc = iwl_read_targ_mem(priv, base + i);
1474 iwl_read_targ_mem(priv, base + i + 1 * sizeof(u32));
1476 iwl_read_targ_mem(priv, base + i + 2 * sizeof(u32));
1478 iwl_read_targ_mem(priv, base + i + 3 * sizeof(u32));
1480 iwl_read_targ_mem(priv, base + i + 4 * sizeof(u32));
1482 iwl_read_targ_mem(priv, base + i + 5 * sizeof(u32));
1484 iwl_read_targ_mem(priv, base + i + 6 * sizeof(u32));
1487 "%-13s (#%d) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1488 desc_lookup(desc), desc, time, blink1, blink2,
1489 ilink1, ilink2, data1);
1490 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, 0,
1491 0, blink1, blink2, ilink1, ilink2);
1495 #define EVENT_START_OFFSET (6 * sizeof(u32))
1498 * iwl3945_print_event_log - Dump error event log to syslog
1501 static int iwl3945_print_event_log(struct iwl_priv *priv, u32 start_idx,
1502 u32 num_events, u32 mode,
1503 int pos, char **buf, size_t bufsz)
1506 u32 base; /* SRAM byte address of event log header */
1507 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1508 u32 ptr; /* SRAM byte address of log data */
1509 u32 ev, time, data; /* event log data */
1510 unsigned long reg_flags;
1512 if (num_events == 0)
1515 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1518 event_size = 2 * sizeof(u32);
1520 event_size = 3 * sizeof(u32);
1522 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1524 /* Make sure device is powered up for SRAM reads */
1525 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1526 iwl_grab_nic_access(priv);
1528 /* Set starting address; reads will auto-increment */
1529 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1532 /* "time" is actually "data" for mode 0 (no timestamp).
1533 * place event id # at far right for easier visual parsing. */
1534 for (i = 0; i < num_events; i++) {
1535 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1536 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1540 pos += scnprintf(*buf + pos, bufsz - pos,
1544 IWL_ERR(priv, "0x%08x\t%04u\n", time, ev);
1545 trace_iwlwifi_dev_ucode_event(priv, 0,
1549 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1551 pos += scnprintf(*buf + pos, bufsz - pos,
1552 "%010u:0x%08x:%04u\n",
1555 IWL_ERR(priv, "%010u\t0x%08x\t%04u\n",
1557 trace_iwlwifi_dev_ucode_event(priv, time,
1563 /* Allow device to power down */
1564 iwl_release_nic_access(priv);
1565 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1570 * iwl3945_print_last_event_logs - Dump the newest # of event log to syslog
1572 static int iwl3945_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1573 u32 num_wraps, u32 next_entry,
1575 int pos, char **buf, size_t bufsz)
1578 * display the newest DEFAULT_LOG_ENTRIES entries
1579 * i.e the entries just before the next ont that uCode would fill.
1582 if (next_entry < size) {
1583 pos = iwl3945_print_event_log(priv,
1584 capacity - (size - next_entry),
1585 size - next_entry, mode,
1587 pos = iwl3945_print_event_log(priv, 0,
1591 pos = iwl3945_print_event_log(priv, next_entry - size,
1595 if (next_entry < size)
1596 pos = iwl3945_print_event_log(priv, 0,
1600 pos = iwl3945_print_event_log(priv, next_entry - size,
1607 #define DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES (20)
1609 int iwl3945_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1610 char **buf, bool display)
1612 u32 base; /* SRAM byte address of event log header */
1613 u32 capacity; /* event log capacity in # entries */
1614 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1615 u32 num_wraps; /* # times uCode wrapped to top of log */
1616 u32 next_entry; /* index of next entry to be written by uCode */
1617 u32 size; /* # entries that we'll print */
1621 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1622 if (!iwl3945_hw_valid_rtc_data_addr(base)) {
1623 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1627 /* event log header */
1628 capacity = iwl_read_targ_mem(priv, base);
1629 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1630 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1631 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1633 if (capacity > priv->cfg->max_event_log_size) {
1634 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1635 capacity, priv->cfg->max_event_log_size);
1636 capacity = priv->cfg->max_event_log_size;
1639 if (next_entry > priv->cfg->max_event_log_size) {
1640 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1641 next_entry, priv->cfg->max_event_log_size);
1642 next_entry = priv->cfg->max_event_log_size;
1645 size = num_wraps ? capacity : next_entry;
1647 /* bail out if nothing in log */
1649 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1653 #ifdef CONFIG_IWLWIFI_DEBUG
1654 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1655 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1656 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1658 size = (size > DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES)
1659 ? DEFAULT_IWL3945_DUMP_EVENT_LOG_ENTRIES : size;
1662 IWL_ERR(priv, "Start IWL Event Log Dump: display last %d count\n",
1665 #ifdef CONFIG_IWLWIFI_DEBUG
1668 bufsz = capacity * 48;
1671 *buf = kmalloc(bufsz, GFP_KERNEL);
1675 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1676 /* if uCode has wrapped back to top of log,
1677 * start at the oldest entry,
1678 * i.e the next one that uCode would fill.
1681 pos = iwl3945_print_event_log(priv, next_entry,
1682 capacity - next_entry, mode,
1685 /* (then/else) start at top of log */
1686 pos = iwl3945_print_event_log(priv, 0, next_entry, mode,
1689 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1690 next_entry, size, mode,
1693 pos = iwl3945_print_last_event_logs(priv, capacity, num_wraps,
1694 next_entry, size, mode,
1700 static void iwl3945_irq_tasklet(struct iwl_priv *priv)
1702 u32 inta, handled = 0;
1704 unsigned long flags;
1705 #ifdef CONFIG_IWLWIFI_DEBUG
1709 spin_lock_irqsave(&priv->lock, flags);
1711 /* Ack/clear/reset pending uCode interrupts.
1712 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1713 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1714 inta = iwl_read32(priv, CSR_INT);
1715 iwl_write32(priv, CSR_INT, inta);
1717 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1718 * Any new interrupts that happen after this, either while we're
1719 * in this tasklet, or later, will show up in next ISR/tasklet. */
1720 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1721 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1723 #ifdef CONFIG_IWLWIFI_DEBUG
1724 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1725 /* just for debug */
1726 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1727 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1728 inta, inta_mask, inta_fh);
1732 spin_unlock_irqrestore(&priv->lock, flags);
1734 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1735 * atomic, make sure that inta covers all the interrupts that
1736 * we've discovered, even if FH interrupt came in just after
1737 * reading CSR_INT. */
1738 if (inta_fh & CSR39_FH_INT_RX_MASK)
1739 inta |= CSR_INT_BIT_FH_RX;
1740 if (inta_fh & CSR39_FH_INT_TX_MASK)
1741 inta |= CSR_INT_BIT_FH_TX;
1743 /* Now service all interrupt bits discovered above. */
1744 if (inta & CSR_INT_BIT_HW_ERR) {
1745 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1747 /* Tell the device to stop sending interrupts */
1748 iwl_disable_interrupts(priv);
1750 priv->isr_stats.hw++;
1751 iwl_irq_handle_error(priv);
1753 handled |= CSR_INT_BIT_HW_ERR;
1758 #ifdef CONFIG_IWLWIFI_DEBUG
1759 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1760 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1761 if (inta & CSR_INT_BIT_SCD) {
1762 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1763 "the frame/frames.\n");
1764 priv->isr_stats.sch++;
1767 /* Alive notification via Rx interrupt will do the real work */
1768 if (inta & CSR_INT_BIT_ALIVE) {
1769 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1770 priv->isr_stats.alive++;
1774 /* Safely ignore these bits for debug checks below */
1775 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1777 /* Error detected by uCode */
1778 if (inta & CSR_INT_BIT_SW_ERR) {
1779 IWL_ERR(priv, "Microcode SW error detected. "
1780 "Restarting 0x%X.\n", inta);
1781 priv->isr_stats.sw++;
1782 priv->isr_stats.sw_err = inta;
1783 iwl_irq_handle_error(priv);
1784 handled |= CSR_INT_BIT_SW_ERR;
1787 /* uCode wakes up after power-down sleep */
1788 if (inta & CSR_INT_BIT_WAKEUP) {
1789 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1790 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1791 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1792 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1793 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1794 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1795 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1796 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1798 priv->isr_stats.wakeup++;
1799 handled |= CSR_INT_BIT_WAKEUP;
1802 /* All uCode command responses, including Tx command responses,
1803 * Rx "responses" (frame-received notification), and other
1804 * notifications from uCode come through here*/
1805 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1806 iwl3945_rx_handle(priv);
1807 priv->isr_stats.rx++;
1808 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1811 if (inta & CSR_INT_BIT_FH_TX) {
1812 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1813 priv->isr_stats.tx++;
1815 iwl_write32(priv, CSR_FH_INT_STATUS, (1 << 6));
1816 iwl_write_direct32(priv, FH39_TCSR_CREDIT
1817 (FH39_SRVC_CHNL), 0x0);
1818 handled |= CSR_INT_BIT_FH_TX;
1821 if (inta & ~handled) {
1822 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1823 priv->isr_stats.unhandled++;
1826 if (inta & ~priv->inta_mask) {
1827 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1828 inta & ~priv->inta_mask);
1829 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1832 /* Re-enable all interrupts */
1833 /* only Re-enable if disabled by irq */
1834 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1835 iwl_enable_interrupts(priv);
1837 #ifdef CONFIG_IWLWIFI_DEBUG
1838 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1839 inta = iwl_read32(priv, CSR_INT);
1840 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1841 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1842 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1843 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1848 static int iwl3945_get_channels_for_scan(struct iwl_priv *priv,
1849 enum ieee80211_band band,
1850 u8 is_active, u8 n_probes,
1851 struct iwl3945_scan_channel *scan_ch,
1852 struct ieee80211_vif *vif)
1854 struct ieee80211_channel *chan;
1855 const struct ieee80211_supported_band *sband;
1856 const struct iwl_channel_info *ch_info;
1857 u16 passive_dwell = 0;
1858 u16 active_dwell = 0;
1861 sband = iwl_get_hw_mode(priv, band);
1865 active_dwell = iwl_get_active_dwell_time(priv, band, n_probes);
1866 passive_dwell = iwl_get_passive_dwell_time(priv, band, vif);
1868 if (passive_dwell <= active_dwell)
1869 passive_dwell = active_dwell + 1;
1871 for (i = 0, added = 0; i < priv->scan_request->n_channels; i++) {
1872 chan = priv->scan_request->channels[i];
1874 if (chan->band != band)
1877 scan_ch->channel = chan->hw_value;
1879 ch_info = iwl_get_channel_info(priv, band, scan_ch->channel);
1880 if (!is_channel_valid(ch_info)) {
1881 IWL_DEBUG_SCAN(priv, "Channel %d is INVALID for this band.\n",
1886 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1887 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1888 /* If passive , set up for auto-switch
1889 * and use long active_dwell time.
1891 if (!is_active || is_channel_passive(ch_info) ||
1892 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1893 scan_ch->type = 0; /* passive */
1894 if (IWL_UCODE_API(priv->ucode_ver) == 1)
1895 scan_ch->active_dwell = cpu_to_le16(passive_dwell - 1);
1897 scan_ch->type = 1; /* active */
1900 /* Set direct probe bits. These may be used both for active
1901 * scan channels (probes gets sent right away),
1902 * or for passive channels (probes get se sent only after
1903 * hearing clear Rx packet).*/
1904 if (IWL_UCODE_API(priv->ucode_ver) >= 2) {
1906 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1908 /* uCode v1 does not allow setting direct probe bits on
1909 * passive channel. */
1910 if ((scan_ch->type & 1) && n_probes)
1911 scan_ch->type |= IWL39_SCAN_PROBE_MASK(n_probes);
1914 /* Set txpower levels to defaults */
1915 scan_ch->tpc.dsp_atten = 110;
1916 /* scan_pwr_info->tpc.dsp_atten; */
1918 /*scan_pwr_info->tpc.tx_gain; */
1919 if (band == IEEE80211_BAND_5GHZ)
1920 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1922 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1923 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1925 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1929 IWL_DEBUG_SCAN(priv, "Scanning %d [%s %d]\n",
1931 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1932 (scan_ch->type & 1) ?
1933 active_dwell : passive_dwell);
1939 IWL_DEBUG_SCAN(priv, "total channels to scan %d\n", added);
1943 static void iwl3945_init_hw_rates(struct iwl_priv *priv,
1944 struct ieee80211_rate *rates)
1948 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1949 rates[i].bitrate = iwl3945_rates[i].ieee * 5;
1950 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1951 rates[i].hw_value_short = i;
1953 if ((i > IWL39_LAST_OFDM_RATE) || (i < IWL_FIRST_OFDM_RATE)) {
1955 * If CCK != 1M then set short preamble rate flag.
1957 rates[i].flags |= (iwl3945_rates[i].plcp == 10) ?
1958 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1963 /******************************************************************************
1965 * uCode download functions
1967 ******************************************************************************/
1969 static void iwl3945_dealloc_ucode_pci(struct iwl_priv *priv)
1971 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1972 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1973 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1974 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1975 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1976 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1980 * iwl3945_verify_inst_full - verify runtime uCode image in card vs. host,
1981 * looking at all data.
1983 static int iwl3945_verify_inst_full(struct iwl_priv *priv, __le32 *image, u32 len)
1990 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
1992 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
1993 IWL39_RTC_INST_LOWER_BOUND);
1996 for (; len > 0; len -= sizeof(u32), image++) {
1997 /* read data comes through single port, auto-incr addr */
1998 /* NOTE: Use the debugless read so we don't flood kernel log
1999 * if IWL_DL_IO is set */
2000 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2001 if (val != le32_to_cpu(*image)) {
2002 IWL_ERR(priv, "uCode INST section is invalid at "
2003 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2004 save_len - len, val, le32_to_cpu(*image));
2014 IWL_DEBUG_INFO(priv,
2015 "ucode image in INSTRUCTION memory is good\n");
2022 * iwl3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
2023 * using sample data 100 bytes apart. If these sample points are good,
2024 * it's a pretty good bet that everything between them is good, too.
2026 static int iwl3945_verify_inst_sparse(struct iwl_priv *priv, __le32 *image, u32 len)
2033 IWL_DEBUG_INFO(priv, "ucode inst image size is %u\n", len);
2035 for (i = 0; i < len; i += 100, image += 100/sizeof(u32)) {
2036 /* read data comes through single port, auto-incr addr */
2037 /* NOTE: Use the debugless read so we don't flood kernel log
2038 * if IWL_DL_IO is set */
2039 iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR,
2040 i + IWL39_RTC_INST_LOWER_BOUND);
2041 val = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2042 if (val != le32_to_cpu(*image)) {
2043 #if 0 /* Enable this if you want to see details */
2044 IWL_ERR(priv, "uCode INST section is invalid at "
2045 "offset 0x%x, is 0x%x, s/b 0x%x\n",
2060 * iwl3945_verify_ucode - determine which instruction image is in SRAM,
2061 * and verify its contents
2063 static int iwl3945_verify_ucode(struct iwl_priv *priv)
2070 image = (__le32 *)priv->ucode_boot.v_addr;
2071 len = priv->ucode_boot.len;
2072 rc = iwl3945_verify_inst_sparse(priv, image, len);
2074 IWL_DEBUG_INFO(priv, "Bootstrap uCode is good in inst SRAM\n");
2078 /* Try initialize */
2079 image = (__le32 *)priv->ucode_init.v_addr;
2080 len = priv->ucode_init.len;
2081 rc = iwl3945_verify_inst_sparse(priv, image, len);
2083 IWL_DEBUG_INFO(priv, "Initialize uCode is good in inst SRAM\n");
2087 /* Try runtime/protocol */
2088 image = (__le32 *)priv->ucode_code.v_addr;
2089 len = priv->ucode_code.len;
2090 rc = iwl3945_verify_inst_sparse(priv, image, len);
2092 IWL_DEBUG_INFO(priv, "Runtime uCode is good in inst SRAM\n");
2096 IWL_ERR(priv, "NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
2098 /* Since nothing seems to match, show first several data entries in
2099 * instruction SRAM, so maybe visual inspection will give a clue.
2100 * Selection of bootstrap image (vs. other images) is arbitrary. */
2101 image = (__le32 *)priv->ucode_boot.v_addr;
2102 len = priv->ucode_boot.len;
2103 rc = iwl3945_verify_inst_full(priv, image, len);
2108 static void iwl3945_nic_start(struct iwl_priv *priv)
2110 /* Remove all resets to allow NIC to operate */
2111 iwl_write32(priv, CSR_RESET, 0);
2114 #define IWL3945_UCODE_GET(item) \
2115 static u32 iwl3945_ucode_get_##item(const struct iwl_ucode_header *ucode)\
2117 return le32_to_cpu(ucode->u.v1.item); \
2120 static u32 iwl3945_ucode_get_header_size(u32 api_ver)
2125 static u8 *iwl3945_ucode_get_data(const struct iwl_ucode_header *ucode)
2127 return (u8 *) ucode->u.v1.data;
2130 IWL3945_UCODE_GET(inst_size);
2131 IWL3945_UCODE_GET(data_size);
2132 IWL3945_UCODE_GET(init_size);
2133 IWL3945_UCODE_GET(init_data_size);
2134 IWL3945_UCODE_GET(boot_size);
2137 * iwl3945_read_ucode - Read uCode images from disk file.
2139 * Copy into buffers for card to fetch via bus-mastering
2141 static int iwl3945_read_ucode(struct iwl_priv *priv)
2143 const struct iwl_ucode_header *ucode;
2144 int ret = -EINVAL, index;
2145 const struct firmware *ucode_raw;
2146 /* firmware file name contains uCode/driver compatibility version */
2147 const char *name_pre = priv->cfg->fw_name_pre;
2148 const unsigned int api_max = priv->cfg->ucode_api_max;
2149 const unsigned int api_min = priv->cfg->ucode_api_min;
2153 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
2155 /* Ask kernel firmware_class module to get the boot firmware off disk.
2156 * request_firmware() is synchronous, file is in memory on return. */
2157 for (index = api_max; index >= api_min; index--) {
2158 sprintf(buf, "%s%u%s", name_pre, index, ".ucode");
2159 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
2161 IWL_ERR(priv, "%s firmware file req failed: %d\n",
2168 if (index < api_max)
2169 IWL_ERR(priv, "Loaded firmware %s, "
2170 "which is deprecated. "
2171 " Please use API v%u instead.\n",
2173 IWL_DEBUG_INFO(priv, "Got firmware '%s' file "
2174 "(%zd bytes) from disk\n",
2175 buf, ucode_raw->size);
2183 /* Make sure that we got at least our header! */
2184 if (ucode_raw->size < iwl3945_ucode_get_header_size(1)) {
2185 IWL_ERR(priv, "File size way too small!\n");
2190 /* Data from ucode file: header followed by uCode images */
2191 ucode = (struct iwl_ucode_header *)ucode_raw->data;
2193 priv->ucode_ver = le32_to_cpu(ucode->ver);
2194 api_ver = IWL_UCODE_API(priv->ucode_ver);
2195 inst_size = iwl3945_ucode_get_inst_size(ucode);
2196 data_size = iwl3945_ucode_get_data_size(ucode);
2197 init_size = iwl3945_ucode_get_init_size(ucode);
2198 init_data_size = iwl3945_ucode_get_init_data_size(ucode);
2199 boot_size = iwl3945_ucode_get_boot_size(ucode);
2200 src = iwl3945_ucode_get_data(ucode);
2202 /* api_ver should match the api version forming part of the
2203 * firmware filename ... but we don't check for that and only rely
2204 * on the API version read from firmware header from here on forward */
2206 if (api_ver < api_min || api_ver > api_max) {
2207 IWL_ERR(priv, "Driver unable to support your firmware API. "
2208 "Driver supports v%u, firmware is v%u.\n",
2210 priv->ucode_ver = 0;
2214 if (api_ver != api_max)
2215 IWL_ERR(priv, "Firmware has old API version. Expected %u, "
2216 "got %u. New firmware can be obtained "
2217 "from http://www.intellinuxwireless.org.\n",
2220 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
2221 IWL_UCODE_MAJOR(priv->ucode_ver),
2222 IWL_UCODE_MINOR(priv->ucode_ver),
2223 IWL_UCODE_API(priv->ucode_ver),
2224 IWL_UCODE_SERIAL(priv->ucode_ver));
2226 snprintf(priv->hw->wiphy->fw_version,
2227 sizeof(priv->hw->wiphy->fw_version),
2229 IWL_UCODE_MAJOR(priv->ucode_ver),
2230 IWL_UCODE_MINOR(priv->ucode_ver),
2231 IWL_UCODE_API(priv->ucode_ver),
2232 IWL_UCODE_SERIAL(priv->ucode_ver));
2234 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2236 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
2238 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
2240 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
2242 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
2244 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
2248 /* Verify size of file vs. image size info in file's header */
2249 if (ucode_raw->size != iwl3945_ucode_get_header_size(api_ver) +
2250 inst_size + data_size + init_size +
2251 init_data_size + boot_size) {
2253 IWL_DEBUG_INFO(priv,
2254 "uCode file size %zd does not match expected size\n",
2260 /* Verify that uCode images will fit in card's SRAM */
2261 if (inst_size > IWL39_MAX_INST_SIZE) {
2262 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
2268 if (data_size > IWL39_MAX_DATA_SIZE) {
2269 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
2274 if (init_size > IWL39_MAX_INST_SIZE) {
2275 IWL_DEBUG_INFO(priv,
2276 "uCode init instr len %d too large to fit in\n",
2281 if (init_data_size > IWL39_MAX_DATA_SIZE) {
2282 IWL_DEBUG_INFO(priv,
2283 "uCode init data len %d too large to fit in\n",
2288 if (boot_size > IWL39_MAX_BSM_SIZE) {
2289 IWL_DEBUG_INFO(priv,
2290 "uCode boot instr len %d too large to fit in\n",
2296 /* Allocate ucode buffers for card's bus-master loading ... */
2298 /* Runtime instructions and 2 copies of data:
2299 * 1) unmodified from disk
2300 * 2) backup cache for save/restore during power-downs */
2301 priv->ucode_code.len = inst_size;
2302 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2304 priv->ucode_data.len = data_size;
2305 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2307 priv->ucode_data_backup.len = data_size;
2308 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2310 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2311 !priv->ucode_data_backup.v_addr)
2314 /* Initialization instructions and data */
2315 if (init_size && init_data_size) {
2316 priv->ucode_init.len = init_size;
2317 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2319 priv->ucode_init_data.len = init_data_size;
2320 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2322 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2326 /* Bootstrap (instructions only, no data) */
2328 priv->ucode_boot.len = boot_size;
2329 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2331 if (!priv->ucode_boot.v_addr)
2335 /* Copy images into buffers for card's bus-master reads ... */
2337 /* Runtime instructions (first block of data in file) */
2339 IWL_DEBUG_INFO(priv,
2340 "Copying (but not loading) uCode instr len %zd\n", len);
2341 memcpy(priv->ucode_code.v_addr, src, len);
2344 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2345 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2347 /* Runtime data (2nd block)
2348 * NOTE: Copy into backup buffer will be done in iwl3945_up() */
2350 IWL_DEBUG_INFO(priv,
2351 "Copying (but not loading) uCode data len %zd\n", len);
2352 memcpy(priv->ucode_data.v_addr, src, len);
2353 memcpy(priv->ucode_data_backup.v_addr, src, len);
2356 /* Initialization instructions (3rd block) */
2359 IWL_DEBUG_INFO(priv,
2360 "Copying (but not loading) init instr len %zd\n", len);
2361 memcpy(priv->ucode_init.v_addr, src, len);
2365 /* Initialization data (4th block) */
2366 if (init_data_size) {
2367 len = init_data_size;
2368 IWL_DEBUG_INFO(priv,
2369 "Copying (but not loading) init data len %zd\n", len);
2370 memcpy(priv->ucode_init_data.v_addr, src, len);
2374 /* Bootstrap instructions (5th block) */
2376 IWL_DEBUG_INFO(priv,
2377 "Copying (but not loading) boot instr len %zd\n", len);
2378 memcpy(priv->ucode_boot.v_addr, src, len);
2380 /* We have our copies now, allow OS release its copies */
2381 release_firmware(ucode_raw);
2385 IWL_ERR(priv, "failed to allocate pci memory\n");
2387 iwl3945_dealloc_ucode_pci(priv);
2390 release_firmware(ucode_raw);
2398 * iwl3945_set_ucode_ptrs - Set uCode address location
2400 * Tell initialization uCode where to find runtime uCode.
2402 * BSM registers initially contain pointers to initialization uCode.
2403 * We need to replace them to load runtime uCode inst and data,
2404 * and to save runtime data when powering down.
2406 static int iwl3945_set_ucode_ptrs(struct iwl_priv *priv)
2411 /* bits 31:0 for 3945 */
2412 pinst = priv->ucode_code.p_addr;
2413 pdata = priv->ucode_data_backup.p_addr;
2415 /* Tell bootstrap uCode where to find image to load */
2416 iwl_write_prph(priv, BSM_DRAM_INST_PTR_REG, pinst);
2417 iwl_write_prph(priv, BSM_DRAM_DATA_PTR_REG, pdata);
2418 iwl_write_prph(priv, BSM_DRAM_DATA_BYTECOUNT_REG,
2419 priv->ucode_data.len);
2421 /* Inst byte count must be last to set up, bit 31 signals uCode
2422 * that all new ptr/size info is in place */
2423 iwl_write_prph(priv, BSM_DRAM_INST_BYTECOUNT_REG,
2424 priv->ucode_code.len | BSM_DRAM_INST_LOAD);
2426 IWL_DEBUG_INFO(priv, "Runtime uCode pointers are set.\n");
2432 * iwl3945_init_alive_start - Called after REPLY_ALIVE notification received
2434 * Called after REPLY_ALIVE notification received from "initialize" uCode.
2436 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2438 static void iwl3945_init_alive_start(struct iwl_priv *priv)
2440 /* Check alive response for "valid" sign from uCode */
2441 if (priv->card_alive_init.is_valid != UCODE_VALID_OK) {
2442 /* We had an error bringing up the hardware, so take it
2443 * all the way back down so we can try again */
2444 IWL_DEBUG_INFO(priv, "Initialize Alive failed.\n");
2448 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2449 * This is a paranoid check, because we would not have gotten the
2450 * "initialize" alive if code weren't properly loaded. */
2451 if (iwl3945_verify_ucode(priv)) {
2452 /* Runtime instruction load was bad;
2453 * take it all the way back down so we can try again */
2454 IWL_DEBUG_INFO(priv, "Bad \"initialize\" uCode load.\n");
2458 /* Send pointers to protocol/runtime uCode image ... init code will
2459 * load and launch runtime uCode, which will send us another "Alive"
2461 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
2462 if (iwl3945_set_ucode_ptrs(priv)) {
2463 /* Runtime instruction load won't happen;
2464 * take it all the way back down so we can try again */
2465 IWL_DEBUG_INFO(priv, "Couldn't set up uCode pointers.\n");
2471 queue_work(priv->workqueue, &priv->restart);
2475 * iwl3945_alive_start - called after REPLY_ALIVE notification received
2476 * from protocol/runtime uCode (initialization uCode's
2477 * Alive gets handled by iwl3945_init_alive_start()).
2479 static void iwl3945_alive_start(struct iwl_priv *priv)
2481 int thermal_spin = 0;
2484 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2486 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2487 /* We had an error bringing up the hardware, so take it
2488 * all the way back down so we can try again */
2489 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2493 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2494 * This is a paranoid check, because we would not have gotten the
2495 * "runtime" alive if code weren't properly loaded. */
2496 if (iwl3945_verify_ucode(priv)) {
2497 /* Runtime instruction load was bad;
2498 * take it all the way back down so we can try again */
2499 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2503 rfkill = iwl_read_prph(priv, APMG_RFKILL_REG);
2504 IWL_DEBUG_INFO(priv, "RFKILL status: 0x%x\n", rfkill);
2507 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2508 /* if RFKILL is not on, then wait for thermal
2509 * sensor in adapter to kick in */
2510 while (iwl3945_hw_get_temperature(priv) == 0) {
2516 IWL_DEBUG_INFO(priv, "Thermal calibration took %dus\n",
2519 set_bit(STATUS_RF_KILL_HW, &priv->status);
2521 /* After the ALIVE response, we can send commands to 3945 uCode */
2522 set_bit(STATUS_ALIVE, &priv->status);
2524 if (priv->cfg->ops->lib->recover_from_tx_stall) {
2525 /* Enable timer to monitor the driver queues */
2526 mod_timer(&priv->monitor_recover,
2528 msecs_to_jiffies(priv->cfg->monitor_recover_period));
2531 if (iwl_is_rfkill(priv))
2534 ieee80211_wake_queues(priv->hw);
2536 priv->active_rate = IWL_RATES_MASK;
2538 iwl_power_update_mode(priv, true);
2540 if (iwl_is_associated(priv)) {
2541 struct iwl3945_rxon_cmd *active_rxon =
2542 (struct iwl3945_rxon_cmd *)(&priv->active_rxon);
2544 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2545 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2547 /* Initialize our rx_config data */
2548 iwl_connection_init_rx_config(priv, NULL);
2551 /* Configure Bluetooth device coexistence support */
2552 priv->cfg->ops->hcmd->send_bt_config(priv);
2554 /* Configure the adapter for unassociated operation */
2555 iwlcore_commit_rxon(priv);
2557 iwl3945_reg_txpower_periodic(priv);
2559 iwl_leds_init(priv);
2561 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2562 set_bit(STATUS_READY, &priv->status);
2563 wake_up_interruptible(&priv->wait_command_queue);
2568 queue_work(priv->workqueue, &priv->restart);
2571 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv);
2573 static void __iwl3945_down(struct iwl_priv *priv)
2575 unsigned long flags;
2576 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2577 struct ieee80211_conf *conf = NULL;
2579 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2581 conf = ieee80211_get_hw_conf(priv->hw);
2584 set_bit(STATUS_EXIT_PENDING, &priv->status);
2586 /* Station information will now be cleared in device */
2587 iwl_clear_ucode_stations(priv);
2588 iwl_dealloc_bcast_station(priv);
2589 iwl_clear_driver_stations(priv);
2591 /* Unblock any waiting calls */
2592 wake_up_interruptible_all(&priv->wait_command_queue);
2594 /* Wipe out the EXIT_PENDING status bit if we are not actually
2595 * exiting the module */
2597 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2599 /* stop and reset the on-board processor */
2600 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2602 /* tell the device to stop sending interrupts */
2603 spin_lock_irqsave(&priv->lock, flags);
2604 iwl_disable_interrupts(priv);
2605 spin_unlock_irqrestore(&priv->lock, flags);
2606 iwl_synchronize_irq(priv);
2608 if (priv->mac80211_registered)
2609 ieee80211_stop_queues(priv->hw);
2611 /* If we have not previously called iwl3945_init() then
2612 * clear all bits but the RF Kill bits and return */
2613 if (!iwl_is_init(priv)) {
2614 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2616 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2617 STATUS_GEO_CONFIGURED |
2618 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2619 STATUS_EXIT_PENDING;
2623 /* ...otherwise clear out all the status bits but the RF Kill
2624 * bit and continue taking the NIC down. */
2625 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2627 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2628 STATUS_GEO_CONFIGURED |
2629 test_bit(STATUS_FW_ERROR, &priv->status) <<
2631 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2632 STATUS_EXIT_PENDING;
2634 iwl3945_hw_txq_ctx_stop(priv);
2635 iwl3945_hw_rxq_stop(priv);
2637 /* Power-down device's busmaster DMA clocks */
2638 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2641 /* Stop the device, and put it in low power state */
2642 priv->cfg->ops->lib->apm_ops.stop(priv);
2645 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2647 if (priv->ibss_beacon)
2648 dev_kfree_skb(priv->ibss_beacon);
2649 priv->ibss_beacon = NULL;
2651 /* clear out any free frames */
2652 iwl3945_clear_free_frames(priv);
2655 static void iwl3945_down(struct iwl_priv *priv)
2657 mutex_lock(&priv->mutex);
2658 __iwl3945_down(priv);
2659 mutex_unlock(&priv->mutex);
2661 iwl3945_cancel_deferred_work(priv);
2664 #define MAX_HW_RESTARTS 5
2666 static int __iwl3945_up(struct iwl_priv *priv)
2670 rc = iwl_alloc_bcast_station(priv, false);
2674 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2675 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2679 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2680 IWL_ERR(priv, "ucode not available for device bring up\n");
2684 /* If platform's RF_KILL switch is NOT set to KILL */
2685 if (iwl_read32(priv, CSR_GP_CNTRL) &
2686 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2687 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2689 set_bit(STATUS_RF_KILL_HW, &priv->status);
2690 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2694 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2696 rc = iwl3945_hw_nic_init(priv);
2698 IWL_ERR(priv, "Unable to int nic\n");
2702 /* make sure rfkill handshake bits are cleared */
2703 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2704 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2705 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2707 /* clear (again), then enable host interrupts */
2708 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2709 iwl_enable_interrupts(priv);
2711 /* really make sure rfkill handshake bits are cleared */
2712 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2713 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2715 /* Copy original ucode data image from disk into backup cache.
2716 * This will be used to initialize the on-board processor's
2717 * data SRAM for a clean start when the runtime program first loads. */
2718 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2719 priv->ucode_data.len);
2721 /* We return success when we resume from suspend and rf_kill is on. */
2722 if (test_bit(STATUS_RF_KILL_HW, &priv->status))
2725 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2727 /* load bootstrap state machine,
2728 * load bootstrap program into processor's memory,
2729 * prepare to load the "initialize" uCode */
2730 rc = priv->cfg->ops->lib->load_ucode(priv);
2734 "Unable to set up bootstrap uCode: %d\n", rc);
2738 /* start card; "initialize" will load runtime ucode */
2739 iwl3945_nic_start(priv);
2741 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2746 set_bit(STATUS_EXIT_PENDING, &priv->status);
2747 __iwl3945_down(priv);
2748 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2750 /* tried to restart and config the device for as long as our
2751 * patience could withstand */
2752 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2757 /*****************************************************************************
2759 * Workqueue callbacks
2761 *****************************************************************************/
2763 static void iwl3945_bg_init_alive_start(struct work_struct *data)
2765 struct iwl_priv *priv =
2766 container_of(data, struct iwl_priv, init_alive_start.work);
2768 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2771 mutex_lock(&priv->mutex);
2772 iwl3945_init_alive_start(priv);
2773 mutex_unlock(&priv->mutex);
2776 static void iwl3945_bg_alive_start(struct work_struct *data)
2778 struct iwl_priv *priv =
2779 container_of(data, struct iwl_priv, alive_start.work);
2781 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2784 mutex_lock(&priv->mutex);
2785 iwl3945_alive_start(priv);
2786 mutex_unlock(&priv->mutex);
2790 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2791 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2792 * *is* readable even when device has been SW_RESET into low power mode
2793 * (e.g. during RF KILL).
2795 static void iwl3945_rfkill_poll(struct work_struct *data)
2797 struct iwl_priv *priv =
2798 container_of(data, struct iwl_priv, _3945.rfkill_poll.work);
2799 bool old_rfkill = test_bit(STATUS_RF_KILL_HW, &priv->status);
2800 bool new_rfkill = !(iwl_read32(priv, CSR_GP_CNTRL)
2801 & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2803 if (new_rfkill != old_rfkill) {
2805 set_bit(STATUS_RF_KILL_HW, &priv->status);
2807 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2809 wiphy_rfkill_set_hw_state(priv->hw->wiphy, new_rfkill);
2811 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
2812 new_rfkill ? "disable radio" : "enable radio");
2815 /* Keep this running, even if radio now enabled. This will be
2816 * cancelled in mac_start() if system decides to start again */
2817 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
2818 round_jiffies_relative(2 * HZ));
2822 void iwl3945_request_scan(struct iwl_priv *priv, struct ieee80211_vif *vif)
2824 struct iwl_host_cmd cmd = {
2825 .id = REPLY_SCAN_CMD,
2826 .len = sizeof(struct iwl3945_scan_cmd),
2827 .flags = CMD_SIZE_HUGE,
2829 struct iwl3945_scan_cmd *scan;
2830 struct ieee80211_conf *conf = NULL;
2832 enum ieee80211_band band;
2833 bool is_active = false;
2835 conf = ieee80211_get_hw_conf(priv->hw);
2837 cancel_delayed_work(&priv->scan_check);
2839 if (!iwl_is_ready(priv)) {
2840 IWL_WARN(priv, "request scan called when driver not ready.\n");
2844 /* Make sure the scan wasn't canceled before this queued work
2845 * was given the chance to run... */
2846 if (!test_bit(STATUS_SCANNING, &priv->status))
2849 /* This should never be called or scheduled if there is currently
2850 * a scan active in the hardware. */
2851 if (test_bit(STATUS_SCAN_HW, &priv->status)) {
2852 IWL_DEBUG_INFO(priv, "Multiple concurrent scan requests "
2853 "Ignoring second request.\n");
2857 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2858 IWL_DEBUG_SCAN(priv, "Aborting scan due to device shutdown\n");
2862 if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2864 "Scan request while abort pending. Queuing.\n");
2868 if (iwl_is_rfkill(priv)) {
2869 IWL_DEBUG_HC(priv, "Aborting scan due to RF Kill activation\n");
2873 if (!test_bit(STATUS_READY, &priv->status)) {
2875 "Scan request while uninitialized. Queuing.\n");
2879 if (!priv->scan_cmd) {
2880 priv->scan_cmd = kmalloc(sizeof(struct iwl3945_scan_cmd) +
2881 IWL_MAX_SCAN_SIZE, GFP_KERNEL);
2882 if (!priv->scan_cmd) {
2883 IWL_DEBUG_SCAN(priv, "Fail to allocate scan memory\n");
2887 scan = priv->scan_cmd;
2888 memset(scan, 0, sizeof(struct iwl3945_scan_cmd) + IWL_MAX_SCAN_SIZE);
2890 scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
2891 scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
2893 if (iwl_is_associated(priv)) {
2896 u32 suspend_time = 100;
2897 u32 scan_suspend_time = 100;
2898 unsigned long flags;
2900 IWL_DEBUG_INFO(priv, "Scanning while associated...\n");
2902 spin_lock_irqsave(&priv->lock, flags);
2903 interval = vif ? vif->bss_conf.beacon_int : 0;
2904 spin_unlock_irqrestore(&priv->lock, flags);
2906 scan->suspend_time = 0;
2907 scan->max_out_time = cpu_to_le32(200 * 1024);
2909 interval = suspend_time;
2911 * suspend time format:
2912 * 0-19: beacon interval in usec (time before exec.)
2914 * 24-31: number of beacons (suspend between channels)
2917 extra = (suspend_time / interval) << 24;
2918 scan_suspend_time = 0xFF0FFFFF &
2919 (extra | ((suspend_time % interval) * 1024));
2921 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2922 IWL_DEBUG_SCAN(priv, "suspend_time 0x%X beacon interval %d\n",
2923 scan_suspend_time, interval);
2926 if (priv->is_internal_short_scan) {
2927 IWL_DEBUG_SCAN(priv, "Start internal passive scan.\n");
2928 } else if (priv->scan_request->n_ssids) {
2930 IWL_DEBUG_SCAN(priv, "Kicking off active scan\n");
2931 for (i = 0; i < priv->scan_request->n_ssids; i++) {
2932 /* always does wildcard anyway */
2933 if (!priv->scan_request->ssids[i].ssid_len)
2935 scan->direct_scan[p].id = WLAN_EID_SSID;
2936 scan->direct_scan[p].len =
2937 priv->scan_request->ssids[i].ssid_len;
2938 memcpy(scan->direct_scan[p].ssid,
2939 priv->scan_request->ssids[i].ssid,
2940 priv->scan_request->ssids[i].ssid_len);
2946 IWL_DEBUG_SCAN(priv, "Kicking off passive scan.\n");
2948 /* We don't build a direct scan probe request; the uCode will do
2949 * that based on the direct_mask added to each channel entry */
2950 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2951 scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
2952 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2954 /* flags + rate selection */
2956 switch (priv->scan_band) {
2957 case IEEE80211_BAND_2GHZ:
2958 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2959 scan->tx_cmd.rate = IWL_RATE_1M_PLCP;
2960 scan->good_CRC_th = 0;
2961 band = IEEE80211_BAND_2GHZ;
2963 case IEEE80211_BAND_5GHZ:
2964 scan->tx_cmd.rate = IWL_RATE_6M_PLCP;
2966 * If active scaning is requested but a certain channel
2967 * is marked passive, we can do active scanning if we
2968 * detect transmissions.
2970 scan->good_CRC_th = is_active ? IWL_GOOD_CRC_TH_DEFAULT :
2971 IWL_GOOD_CRC_TH_DISABLED;
2972 band = IEEE80211_BAND_5GHZ;
2975 IWL_WARN(priv, "Invalid scan band\n");
2979 if (!priv->is_internal_short_scan) {
2980 scan->tx_cmd.len = cpu_to_le16(
2981 iwl_fill_probe_req(priv,
2982 (struct ieee80211_mgmt *)scan->data,
2983 priv->scan_request->ie,
2984 priv->scan_request->ie_len,
2985 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2987 scan->tx_cmd.len = cpu_to_le16(
2988 iwl_fill_probe_req(priv,
2989 (struct ieee80211_mgmt *)scan->data,
2991 IWL_MAX_SCAN_SIZE - sizeof(*scan)));
2993 /* select Rx antennas */
2994 scan->flags |= iwl3945_get_antenna_flags(priv);
2996 scan->channel_count =
2997 iwl3945_get_channels_for_scan(priv, band, is_active, n_probes,
2998 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)], vif);
3000 if (scan->channel_count == 0) {
3001 IWL_DEBUG_SCAN(priv, "channel count %d\n", scan->channel_count);
3005 cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3006 scan->channel_count * sizeof(struct iwl3945_scan_channel);
3008 scan->len = cpu_to_le16(cmd.len);
3010 set_bit(STATUS_SCAN_HW, &priv->status);
3011 if (iwl_send_cmd_sync(priv, &cmd))
3014 queue_delayed_work(priv->workqueue, &priv->scan_check,
3015 IWL_SCAN_CHECK_WATCHDOG);
3020 /* can not perform scan make sure we clear scanning
3021 * bits from status so next scan request can be performed.
3022 * if we dont clear scanning status bit here all next scan
3025 clear_bit(STATUS_SCAN_HW, &priv->status);
3026 clear_bit(STATUS_SCANNING, &priv->status);
3028 /* inform mac80211 scan aborted */
3029 queue_work(priv->workqueue, &priv->scan_completed);
3032 static void iwl3945_bg_restart(struct work_struct *data)
3034 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3036 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3039 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
3040 mutex_lock(&priv->mutex);
3043 mutex_unlock(&priv->mutex);
3045 ieee80211_restart_hw(priv->hw);
3049 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3052 mutex_lock(&priv->mutex);
3054 mutex_unlock(&priv->mutex);
3058 static void iwl3945_bg_rx_replenish(struct work_struct *data)
3060 struct iwl_priv *priv =
3061 container_of(data, struct iwl_priv, rx_replenish);
3063 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3066 mutex_lock(&priv->mutex);
3067 iwl3945_rx_replenish(priv);
3068 mutex_unlock(&priv->mutex);
3071 void iwl3945_post_associate(struct iwl_priv *priv, struct ieee80211_vif *vif)
3074 struct ieee80211_conf *conf = NULL;
3076 if (!vif || !priv->is_open)
3079 if (vif->type == NL80211_IFTYPE_AP) {
3080 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
3084 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
3085 vif->bss_conf.aid, priv->active_rxon.bssid_addr);
3087 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3090 iwl_scan_cancel_timeout(priv, 200);
3092 conf = ieee80211_get_hw_conf(priv->hw);
3094 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3095 iwlcore_commit_rxon(priv);
3097 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3098 iwl_setup_rxon_timing(priv, vif);
3099 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3100 sizeof(priv->rxon_timing), &priv->rxon_timing);
3102 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3103 "Attempting to continue.\n");
3105 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3107 priv->staging_rxon.assoc_id = cpu_to_le16(vif->bss_conf.aid);
3109 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
3110 vif->bss_conf.aid, vif->bss_conf.beacon_int);
3112 if (vif->bss_conf.assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3113 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3115 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3117 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3118 if (vif->bss_conf.assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3119 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3121 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3123 if (vif->type == NL80211_IFTYPE_ADHOC)
3124 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3127 iwlcore_commit_rxon(priv);
3129 switch (vif->type) {
3130 case NL80211_IFTYPE_STATION:
3131 iwl3945_rate_scale_init(priv->hw, IWL_AP_ID);
3133 case NL80211_IFTYPE_ADHOC:
3134 iwl3945_send_beacon_cmd(priv);
3137 IWL_ERR(priv, "%s Should not be called in %d mode\n",
3138 __func__, vif->type);
3143 /*****************************************************************************
3145 * mac80211 entry point functions
3147 *****************************************************************************/
3149 #define UCODE_READY_TIMEOUT (2 * HZ)
3151 static int iwl3945_mac_start(struct ieee80211_hw *hw)
3153 struct iwl_priv *priv = hw->priv;
3156 IWL_DEBUG_MAC80211(priv, "enter\n");
3158 /* we should be verifying the device is ready to be opened */
3159 mutex_lock(&priv->mutex);
3161 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
3162 * ucode filename and max sizes are card-specific. */
3164 if (!priv->ucode_code.len) {
3165 ret = iwl3945_read_ucode(priv);
3167 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
3168 mutex_unlock(&priv->mutex);
3169 goto out_release_irq;
3173 ret = __iwl3945_up(priv);
3175 mutex_unlock(&priv->mutex);
3178 goto out_release_irq;
3180 IWL_DEBUG_INFO(priv, "Start UP work.\n");
3182 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
3183 * mac80211 will not be run successfully. */
3184 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3185 test_bit(STATUS_READY, &priv->status),
3186 UCODE_READY_TIMEOUT);
3188 if (!test_bit(STATUS_READY, &priv->status)) {
3190 "Wait for START_ALIVE timeout after %dms.\n",
3191 jiffies_to_msecs(UCODE_READY_TIMEOUT));
3193 goto out_release_irq;
3197 /* ucode is running and will send rfkill notifications,
3198 * no need to poll the killswitch state anymore */
3199 cancel_delayed_work(&priv->_3945.rfkill_poll);
3201 iwl_led_start(priv);
3204 IWL_DEBUG_MAC80211(priv, "leave\n");
3209 IWL_DEBUG_MAC80211(priv, "leave - failed\n");
3213 static void iwl3945_mac_stop(struct ieee80211_hw *hw)
3215 struct iwl_priv *priv = hw->priv;
3217 IWL_DEBUG_MAC80211(priv, "enter\n");
3219 if (!priv->is_open) {
3220 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
3226 if (iwl_is_ready_rf(priv)) {
3227 /* stop mac, cancel any scan request and clear
3228 * RXON_FILTER_ASSOC_MSK BIT
3230 mutex_lock(&priv->mutex);
3231 iwl_scan_cancel_timeout(priv, 100);
3232 mutex_unlock(&priv->mutex);
3237 flush_workqueue(priv->workqueue);
3239 /* start polling the killswitch state again */
3240 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
3241 round_jiffies_relative(2 * HZ));
3243 IWL_DEBUG_MAC80211(priv, "leave\n");
3246 static int iwl3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
3248 struct iwl_priv *priv = hw->priv;
3250 IWL_DEBUG_MAC80211(priv, "enter\n");
3252 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
3253 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
3255 if (iwl3945_tx_skb(priv, skb))
3256 dev_kfree_skb_any(skb);
3258 IWL_DEBUG_MAC80211(priv, "leave\n");
3259 return NETDEV_TX_OK;
3262 void iwl3945_config_ap(struct iwl_priv *priv, struct ieee80211_vif *vif)
3266 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3269 /* The following should be done only at AP bring up */
3270 if (!(iwl_is_associated(priv))) {
3272 /* RXON - unassoc (to set timing command) */
3273 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3274 iwlcore_commit_rxon(priv);
3277 memset(&priv->rxon_timing, 0, sizeof(struct iwl_rxon_time_cmd));
3278 iwl_setup_rxon_timing(priv, vif);
3279 rc = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3280 sizeof(priv->rxon_timing),
3281 &priv->rxon_timing);
3283 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
3284 "Attempting to continue.\n");
3286 priv->staging_rxon.assoc_id = 0;
3288 if (vif->bss_conf.assoc_capability &
3289 WLAN_CAPABILITY_SHORT_PREAMBLE)
3290 priv->staging_rxon.flags |=
3291 RXON_FLG_SHORT_PREAMBLE_MSK;
3293 priv->staging_rxon.flags &=
3294 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3296 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3297 if (vif->bss_conf.assoc_capability &
3298 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3299 priv->staging_rxon.flags |=
3300 RXON_FLG_SHORT_SLOT_MSK;
3302 priv->staging_rxon.flags &=
3303 ~RXON_FLG_SHORT_SLOT_MSK;
3305 if (vif->type == NL80211_IFTYPE_ADHOC)
3306 priv->staging_rxon.flags &=
3307 ~RXON_FLG_SHORT_SLOT_MSK;
3309 /* restore RXON assoc */
3310 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3311 iwlcore_commit_rxon(priv);
3313 iwl3945_send_beacon_cmd(priv);
3315 /* FIXME - we need to add code here to detect a totally new
3316 * configuration, reset the AP, unassoc, rxon timing, assoc,
3317 * clear sta table, add BCAST sta... */
3320 static int iwl3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3321 struct ieee80211_vif *vif,
3322 struct ieee80211_sta *sta,
3323 struct ieee80211_key_conf *key)
3325 struct iwl_priv *priv = hw->priv;
3327 u8 sta_id = IWL_INVALID_STATION;
3330 IWL_DEBUG_MAC80211(priv, "enter\n");
3332 if (iwl3945_mod_params.sw_crypto) {
3333 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
3337 static_key = !iwl_is_associated(priv);
3341 sta_id = priv->hw_params.bcast_sta_id;
3343 sta_id = iwl_sta_id(sta);
3344 if (sta_id == IWL_INVALID_STATION) {
3345 IWL_DEBUG_MAC80211(priv,
3346 "leave - %pM not in station map.\n",
3353 mutex_lock(&priv->mutex);
3354 iwl_scan_cancel_timeout(priv, 100);
3359 ret = iwl3945_set_static_key(priv, key);
3361 ret = iwl3945_set_dynamic_key(priv, key, sta_id);
3362 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
3366 ret = iwl3945_remove_static_key(priv);
3368 ret = iwl3945_clear_sta_key_info(priv, sta_id);
3369 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
3375 mutex_unlock(&priv->mutex);
3376 IWL_DEBUG_MAC80211(priv, "leave\n");
3381 static int iwl3945_mac_sta_add(struct ieee80211_hw *hw,
3382 struct ieee80211_vif *vif,
3383 struct ieee80211_sta *sta)
3385 struct iwl_priv *priv = hw->priv;
3386 struct iwl3945_sta_priv *sta_priv = (void *)sta->drv_priv;
3388 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3391 sta_priv->common.sta_id = IWL_INVALID_STATION;
3393 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3396 ret = iwl_add_station_common(priv, sta->addr, is_ap, &sta->ht_cap,
3399 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3401 /* Should we return success if return code is EEXIST ? */
3405 sta_priv->common.sta_id = sta_id;
3407 /* Initialize rate scaling */
3408 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3410 iwl3945_rs_rate_init(priv, sta, sta_id);
3414 /*****************************************************************************
3418 *****************************************************************************/
3420 #ifdef CONFIG_IWLWIFI_DEBUG
3423 * The following adds a new attribute to the sysfs representation
3424 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3425 * used for controlling the debug level.
3427 * See the level definitions in iwl for details.
3429 * The debug_level being managed using sysfs below is a per device debug
3430 * level that is used instead of the global debug level if it (the per
3431 * device debug level) is set.
3433 static ssize_t show_debug_level(struct device *d,
3434 struct device_attribute *attr, char *buf)
3436 struct iwl_priv *priv = dev_get_drvdata(d);
3437 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3439 static ssize_t store_debug_level(struct device *d,
3440 struct device_attribute *attr,
3441 const char *buf, size_t count)
3443 struct iwl_priv *priv = dev_get_drvdata(d);
3447 ret = strict_strtoul(buf, 0, &val);
3449 IWL_INFO(priv, "%s is not in hex or decimal form.\n", buf);
3451 priv->debug_level = val;
3452 if (iwl_alloc_traffic_mem(priv))
3454 "Not enough memory to generate traffic log\n");
3456 return strnlen(buf, count);
3459 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3460 show_debug_level, store_debug_level);
3462 #endif /* CONFIG_IWLWIFI_DEBUG */
3464 static ssize_t show_temperature(struct device *d,
3465 struct device_attribute *attr, char *buf)
3467 struct iwl_priv *priv = dev_get_drvdata(d);
3469 if (!iwl_is_alive(priv))
3472 return sprintf(buf, "%d\n", iwl3945_hw_get_temperature(priv));
3475 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3477 static ssize_t show_tx_power(struct device *d,
3478 struct device_attribute *attr, char *buf)
3480 struct iwl_priv *priv = dev_get_drvdata(d);
3481 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3484 static ssize_t store_tx_power(struct device *d,
3485 struct device_attribute *attr,
3486 const char *buf, size_t count)
3488 struct iwl_priv *priv = dev_get_drvdata(d);
3489 char *p = (char *)buf;
3492 val = simple_strtoul(p, &p, 10);
3494 IWL_INFO(priv, ": %s is not in decimal form.\n", buf);
3496 iwl3945_hw_reg_set_txpower(priv, val);
3501 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3503 static ssize_t show_flags(struct device *d,
3504 struct device_attribute *attr, char *buf)
3506 struct iwl_priv *priv = dev_get_drvdata(d);
3508 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3511 static ssize_t store_flags(struct device *d,
3512 struct device_attribute *attr,
3513 const char *buf, size_t count)
3515 struct iwl_priv *priv = dev_get_drvdata(d);
3516 u32 flags = simple_strtoul(buf, NULL, 0);
3518 mutex_lock(&priv->mutex);
3519 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3520 /* Cancel any currently running scans... */
3521 if (iwl_scan_cancel_timeout(priv, 100))
3522 IWL_WARN(priv, "Could not cancel scan.\n");
3524 IWL_DEBUG_INFO(priv, "Committing rxon.flags = 0x%04X\n",
3526 priv->staging_rxon.flags = cpu_to_le32(flags);
3527 iwlcore_commit_rxon(priv);
3530 mutex_unlock(&priv->mutex);
3535 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3537 static ssize_t show_filter_flags(struct device *d,
3538 struct device_attribute *attr, char *buf)
3540 struct iwl_priv *priv = dev_get_drvdata(d);
3542 return sprintf(buf, "0x%04X\n",
3543 le32_to_cpu(priv->active_rxon.filter_flags));
3546 static ssize_t store_filter_flags(struct device *d,
3547 struct device_attribute *attr,
3548 const char *buf, size_t count)
3550 struct iwl_priv *priv = dev_get_drvdata(d);
3551 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3553 mutex_lock(&priv->mutex);
3554 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3555 /* Cancel any currently running scans... */
3556 if (iwl_scan_cancel_timeout(priv, 100))
3557 IWL_WARN(priv, "Could not cancel scan.\n");
3559 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3560 "0x%04X\n", filter_flags);
3561 priv->staging_rxon.filter_flags =
3562 cpu_to_le32(filter_flags);
3563 iwlcore_commit_rxon(priv);
3566 mutex_unlock(&priv->mutex);
3571 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3572 store_filter_flags);
3574 static ssize_t show_measurement(struct device *d,
3575 struct device_attribute *attr, char *buf)
3577 struct iwl_priv *priv = dev_get_drvdata(d);
3578 struct iwl_spectrum_notification measure_report;
3579 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3580 u8 *data = (u8 *)&measure_report;
3581 unsigned long flags;
3583 spin_lock_irqsave(&priv->lock, flags);
3584 if (!(priv->measurement_status & MEASUREMENT_READY)) {
3585 spin_unlock_irqrestore(&priv->lock, flags);
3588 memcpy(&measure_report, &priv->measure_report, size);
3589 priv->measurement_status = 0;
3590 spin_unlock_irqrestore(&priv->lock, flags);
3592 while (size && (PAGE_SIZE - len)) {
3593 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3594 PAGE_SIZE - len, 1);
3596 if (PAGE_SIZE - len)
3600 size -= min(size, 16U);
3606 static ssize_t store_measurement(struct device *d,
3607 struct device_attribute *attr,
3608 const char *buf, size_t count)
3610 struct iwl_priv *priv = dev_get_drvdata(d);
3611 struct ieee80211_measurement_params params = {
3612 .channel = le16_to_cpu(priv->active_rxon.channel),
3613 .start_time = cpu_to_le64(priv->_3945.last_tsf),
3614 .duration = cpu_to_le16(1),
3616 u8 type = IWL_MEASURE_BASIC;
3622 strncpy(buffer, buf, min(sizeof(buffer), count));
3623 channel = simple_strtoul(p, NULL, 0);
3625 params.channel = channel;
3628 while (*p && *p != ' ')
3631 type = simple_strtoul(p + 1, NULL, 0);
3634 IWL_DEBUG_INFO(priv, "Invoking measurement of type %d on "
3635 "channel %d (for '%s')\n", type, params.channel, buf);
3636 iwl3945_get_measurement(priv, ¶ms, type);
3641 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3642 show_measurement, store_measurement);
3644 static ssize_t store_retry_rate(struct device *d,
3645 struct device_attribute *attr,
3646 const char *buf, size_t count)
3648 struct iwl_priv *priv = dev_get_drvdata(d);
3650 priv->retry_rate = simple_strtoul(buf, NULL, 0);
3651 if (priv->retry_rate <= 0)
3652 priv->retry_rate = 1;
3657 static ssize_t show_retry_rate(struct device *d,
3658 struct device_attribute *attr, char *buf)
3660 struct iwl_priv *priv = dev_get_drvdata(d);
3661 return sprintf(buf, "%d", priv->retry_rate);
3664 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3668 static ssize_t show_channels(struct device *d,
3669 struct device_attribute *attr, char *buf)
3671 /* all this shit doesn't belong into sysfs anyway */
3675 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3677 static ssize_t show_antenna(struct device *d,
3678 struct device_attribute *attr, char *buf)
3680 struct iwl_priv *priv = dev_get_drvdata(d);
3682 if (!iwl_is_alive(priv))
3685 return sprintf(buf, "%d\n", iwl3945_mod_params.antenna);
3688 static ssize_t store_antenna(struct device *d,
3689 struct device_attribute *attr,
3690 const char *buf, size_t count)
3692 struct iwl_priv *priv __maybe_unused = dev_get_drvdata(d);
3698 if (sscanf(buf, "%1i", &ant) != 1) {
3699 IWL_DEBUG_INFO(priv, "not in hex or decimal form.\n");
3703 if ((ant >= 0) && (ant <= 2)) {
3704 IWL_DEBUG_INFO(priv, "Setting antenna select to %d.\n", ant);
3705 iwl3945_mod_params.antenna = (enum iwl3945_antenna)ant;
3707 IWL_DEBUG_INFO(priv, "Bad antenna select value %d.\n", ant);
3713 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, show_antenna, store_antenna);
3715 static ssize_t show_status(struct device *d,
3716 struct device_attribute *attr, char *buf)
3718 struct iwl_priv *priv = dev_get_drvdata(d);
3719 if (!iwl_is_alive(priv))
3721 return sprintf(buf, "0x%08x\n", (int)priv->status);
3724 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3726 static ssize_t dump_error_log(struct device *d,
3727 struct device_attribute *attr,
3728 const char *buf, size_t count)
3730 struct iwl_priv *priv = dev_get_drvdata(d);
3731 char *p = (char *)buf;
3734 iwl3945_dump_nic_error_log(priv);
3736 return strnlen(buf, count);
3739 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
3741 /*****************************************************************************
3743 * driver setup and tear down
3745 *****************************************************************************/
3747 static void iwl3945_setup_deferred_work(struct iwl_priv *priv)
3749 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3751 init_waitqueue_head(&priv->wait_command_queue);
3753 INIT_WORK(&priv->restart, iwl3945_bg_restart);
3754 INIT_WORK(&priv->rx_replenish, iwl3945_bg_rx_replenish);
3755 INIT_WORK(&priv->beacon_update, iwl3945_bg_beacon_update);
3756 INIT_DELAYED_WORK(&priv->init_alive_start, iwl3945_bg_init_alive_start);
3757 INIT_DELAYED_WORK(&priv->alive_start, iwl3945_bg_alive_start);
3758 INIT_DELAYED_WORK(&priv->_3945.rfkill_poll, iwl3945_rfkill_poll);
3759 INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
3760 INIT_WORK(&priv->abort_scan, iwl_bg_abort_scan);
3761 INIT_WORK(&priv->start_internal_scan, iwl_bg_start_internal_scan);
3762 INIT_DELAYED_WORK(&priv->scan_check, iwl_bg_scan_check);
3764 iwl3945_hw_setup_deferred_work(priv);
3766 if (priv->cfg->ops->lib->recover_from_tx_stall) {
3767 init_timer(&priv->monitor_recover);
3768 priv->monitor_recover.data = (unsigned long)priv;
3769 priv->monitor_recover.function =
3770 priv->cfg->ops->lib->recover_from_tx_stall;
3773 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3774 iwl3945_irq_tasklet, (unsigned long)priv);
3777 static void iwl3945_cancel_deferred_work(struct iwl_priv *priv)
3779 iwl3945_hw_cancel_deferred_work(priv);
3781 cancel_delayed_work_sync(&priv->init_alive_start);
3782 cancel_delayed_work(&priv->scan_check);
3783 cancel_delayed_work(&priv->alive_start);
3784 cancel_work_sync(&priv->start_internal_scan);
3785 cancel_work_sync(&priv->beacon_update);
3786 if (priv->cfg->ops->lib->recover_from_tx_stall)
3787 del_timer_sync(&priv->monitor_recover);
3790 static struct attribute *iwl3945_sysfs_entries[] = {
3791 &dev_attr_antenna.attr,
3792 &dev_attr_channels.attr,
3793 &dev_attr_dump_errors.attr,
3794 &dev_attr_flags.attr,
3795 &dev_attr_filter_flags.attr,
3796 &dev_attr_measurement.attr,
3797 &dev_attr_retry_rate.attr,
3798 &dev_attr_status.attr,
3799 &dev_attr_temperature.attr,
3800 &dev_attr_tx_power.attr,
3801 #ifdef CONFIG_IWLWIFI_DEBUG
3802 &dev_attr_debug_level.attr,
3807 static struct attribute_group iwl3945_attribute_group = {
3808 .name = NULL, /* put in device directory */
3809 .attrs = iwl3945_sysfs_entries,
3812 static struct ieee80211_ops iwl3945_hw_ops = {
3813 .tx = iwl3945_mac_tx,
3814 .start = iwl3945_mac_start,
3815 .stop = iwl3945_mac_stop,
3816 .add_interface = iwl_mac_add_interface,
3817 .remove_interface = iwl_mac_remove_interface,
3818 .config = iwl_mac_config,
3819 .configure_filter = iwl_configure_filter,
3820 .set_key = iwl3945_mac_set_key,
3821 .conf_tx = iwl_mac_conf_tx,
3822 .reset_tsf = iwl_mac_reset_tsf,
3823 .bss_info_changed = iwl_bss_info_changed,
3824 .hw_scan = iwl_mac_hw_scan,
3825 .sta_add = iwl3945_mac_sta_add,
3826 .sta_remove = iwl_mac_sta_remove,
3829 static int iwl3945_init_drv(struct iwl_priv *priv)
3832 struct iwl3945_eeprom *eeprom = (struct iwl3945_eeprom *)priv->eeprom;
3834 priv->retry_rate = 1;
3835 priv->ibss_beacon = NULL;
3837 spin_lock_init(&priv->sta_lock);
3838 spin_lock_init(&priv->hcmd_lock);
3840 INIT_LIST_HEAD(&priv->free_frames);
3842 mutex_init(&priv->mutex);
3843 mutex_init(&priv->sync_cmd_mutex);
3845 priv->ieee_channels = NULL;
3846 priv->ieee_rates = NULL;
3847 priv->band = IEEE80211_BAND_2GHZ;
3849 priv->iw_mode = NL80211_IFTYPE_STATION;
3850 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3852 priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
3854 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3855 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
3860 ret = iwl_init_channel_map(priv);
3862 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3866 /* Set up txpower settings in driver for all channels */
3867 if (iwl3945_txpower_set_from_eeprom(priv)) {
3869 goto err_free_channel_map;
3872 ret = iwlcore_init_geos(priv);
3874 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3875 goto err_free_channel_map;
3877 iwl3945_init_hw_rates(priv, priv->ieee_rates);
3881 err_free_channel_map:
3882 iwl_free_channel_map(priv);
3887 #define IWL3945_MAX_PROBE_REQUEST 200
3889 static int iwl3945_setup_mac(struct iwl_priv *priv)
3892 struct ieee80211_hw *hw = priv->hw;
3894 hw->rate_control_algorithm = "iwl-3945-rs";
3895 hw->sta_data_size = sizeof(struct iwl3945_sta_priv);
3896 hw->vif_data_size = sizeof(struct iwl_vif_priv);
3898 /* Tell mac80211 our characteristics */
3899 hw->flags = IEEE80211_HW_SIGNAL_DBM |
3900 IEEE80211_HW_SPECTRUM_MGMT;
3902 if (!priv->cfg->broken_powersave)
3903 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3904 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3906 hw->wiphy->interface_modes =
3907 BIT(NL80211_IFTYPE_STATION) |
3908 BIT(NL80211_IFTYPE_ADHOC);
3910 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
3911 WIPHY_FLAG_DISABLE_BEACON_HINTS;
3913 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3914 /* we create the 802.11 header and a zero-length SSID element */
3915 hw->wiphy->max_scan_ie_len = IWL3945_MAX_PROBE_REQUEST - 24 - 2;
3917 /* Default value; 4 EDCA QOS priorities */
3920 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3921 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3922 &priv->bands[IEEE80211_BAND_2GHZ];
3924 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3925 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3926 &priv->bands[IEEE80211_BAND_5GHZ];
3928 ret = ieee80211_register_hw(priv->hw);
3930 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3933 priv->mac80211_registered = 1;
3938 static int iwl3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3941 struct iwl_priv *priv;
3942 struct ieee80211_hw *hw;
3943 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3944 struct iwl3945_eeprom *eeprom;
3945 unsigned long flags;
3947 /***********************
3948 * 1. Allocating HW data
3949 * ********************/
3951 /* mac80211 allocates memory for this device instance, including
3952 * space for this driver's private structure */
3953 hw = iwl_alloc_all(cfg, &iwl3945_hw_ops);
3955 printk(KERN_ERR DRV_NAME "Can not allocate network device\n");
3960 SET_IEEE80211_DEV(hw, &pdev->dev);
3963 * Disabling hardware scan means that mac80211 will perform scans
3964 * "the hard way", rather than using device's scan.
3966 if (iwl3945_mod_params.disable_hw_scan) {
3967 IWL_DEBUG_INFO(priv, "Disabling hw_scan\n");
3968 iwl3945_hw_ops.hw_scan = NULL;
3972 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3974 priv->pci_dev = pdev;
3975 priv->inta_mask = CSR_INI_SET_MASK;
3977 #ifdef CONFIG_IWLWIFI_DEBUG
3978 atomic_set(&priv->restrict_refcnt, 0);
3980 if (iwl_alloc_traffic_mem(priv))
3981 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3983 /***************************
3984 * 2. Initializing PCI bus
3985 * *************************/
3986 if (pci_enable_device(pdev)) {
3988 goto out_ieee80211_free_hw;
3991 pci_set_master(pdev);
3993 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3995 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3997 IWL_WARN(priv, "No suitable DMA available.\n");
3998 goto out_pci_disable_device;
4001 pci_set_drvdata(pdev, priv);
4002 err = pci_request_regions(pdev, DRV_NAME);
4004 goto out_pci_disable_device;
4006 /***********************
4007 * 3. Read REV Register
4008 * ********************/
4009 priv->hw_base = pci_iomap(pdev, 0, 0);
4010 if (!priv->hw_base) {
4012 goto out_pci_release_regions;
4015 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
4016 (unsigned long long) pci_resource_len(pdev, 0));
4017 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
4019 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4020 * PCI Tx retries from interfering with C3 CPU state */
4021 pci_write_config_byte(pdev, 0x41, 0x00);
4023 /* these spin locks will be used in apm_ops.init and EEPROM access
4024 * we should init now
4026 spin_lock_init(&priv->reg_lock);
4027 spin_lock_init(&priv->lock);
4030 * stop and reset the on-board processor just in case it is in a
4031 * strange state ... like being left stranded by a primary kernel
4032 * and this is now the kdump kernel trying to start up
4034 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4036 /***********************
4038 * ********************/
4040 /* Read the EEPROM */
4041 err = iwl_eeprom_init(priv);
4043 IWL_ERR(priv, "Unable to init EEPROM\n");
4046 /* MAC Address location in EEPROM same for 3945/4965 */
4047 eeprom = (struct iwl3945_eeprom *)priv->eeprom;
4048 memcpy(priv->mac_addr, eeprom->mac_address, ETH_ALEN);
4049 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
4050 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4052 /***********************
4053 * 5. Setup HW Constants
4054 * ********************/
4055 /* Device-specific setup */
4056 if (iwl3945_hw_set_hw_params(priv)) {
4057 IWL_ERR(priv, "failed to set hw settings\n");
4058 goto out_eeprom_free;
4061 /***********************
4063 * ********************/
4065 err = iwl3945_init_drv(priv);
4067 IWL_ERR(priv, "initializing driver failed\n");
4068 goto out_unset_hw_params;
4071 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s\n",
4074 /***********************
4076 * ********************/
4078 spin_lock_irqsave(&priv->lock, flags);
4079 iwl_disable_interrupts(priv);
4080 spin_unlock_irqrestore(&priv->lock, flags);
4082 pci_enable_msi(priv->pci_dev);
4084 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
4085 IRQF_SHARED, DRV_NAME, priv);
4087 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4088 goto out_disable_msi;
4091 err = sysfs_create_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4093 IWL_ERR(priv, "failed to create sysfs device attributes\n");
4094 goto out_release_irq;
4097 iwl_set_rxon_channel(priv,
4098 &priv->bands[IEEE80211_BAND_2GHZ].channels[5]);
4099 iwl3945_setup_deferred_work(priv);
4100 iwl3945_setup_rx_handlers(priv);
4101 iwl_power_initialize(priv);
4103 /*********************************
4104 * 8. Setup and Register mac80211
4105 * *******************************/
4107 iwl_enable_interrupts(priv);
4109 err = iwl3945_setup_mac(priv);
4111 goto out_remove_sysfs;
4113 err = iwl_dbgfs_register(priv, DRV_NAME);
4115 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
4117 /* Start monitoring the killswitch */
4118 queue_delayed_work(priv->workqueue, &priv->_3945.rfkill_poll,
4124 destroy_workqueue(priv->workqueue);
4125 priv->workqueue = NULL;
4126 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4128 free_irq(priv->pci_dev->irq, priv);
4130 pci_disable_msi(priv->pci_dev);
4131 iwlcore_free_geos(priv);
4132 iwl_free_channel_map(priv);
4133 out_unset_hw_params:
4134 iwl3945_unset_hw_params(priv);
4136 iwl_eeprom_free(priv);
4138 pci_iounmap(pdev, priv->hw_base);
4139 out_pci_release_regions:
4140 pci_release_regions(pdev);
4141 out_pci_disable_device:
4142 pci_set_drvdata(pdev, NULL);
4143 pci_disable_device(pdev);
4144 out_ieee80211_free_hw:
4145 iwl_free_traffic_mem(priv);
4146 ieee80211_free_hw(priv->hw);
4151 static void __devexit iwl3945_pci_remove(struct pci_dev *pdev)
4153 struct iwl_priv *priv = pci_get_drvdata(pdev);
4154 unsigned long flags;
4159 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
4161 iwl_dbgfs_unregister(priv);
4163 set_bit(STATUS_EXIT_PENDING, &priv->status);
4165 if (priv->mac80211_registered) {
4166 ieee80211_unregister_hw(priv->hw);
4167 priv->mac80211_registered = 0;
4173 * Make sure device is reset to low power before unloading driver.
4174 * This may be redundant with iwl_down(), but there are paths to
4175 * run iwl_down() without calling apm_ops.stop(), and there are
4176 * paths to avoid running iwl_down() at all before leaving driver.
4177 * This (inexpensive) call *makes sure* device is reset.
4179 priv->cfg->ops->lib->apm_ops.stop(priv);
4181 /* make sure we flush any pending irq or
4182 * tasklet for the driver
4184 spin_lock_irqsave(&priv->lock, flags);
4185 iwl_disable_interrupts(priv);
4186 spin_unlock_irqrestore(&priv->lock, flags);
4188 iwl_synchronize_irq(priv);
4190 sysfs_remove_group(&pdev->dev.kobj, &iwl3945_attribute_group);
4192 cancel_delayed_work_sync(&priv->_3945.rfkill_poll);
4194 iwl3945_dealloc_ucode_pci(priv);
4197 iwl3945_rx_queue_free(priv, &priv->rxq);
4198 iwl3945_hw_txq_ctx_free(priv);
4200 iwl3945_unset_hw_params(priv);
4202 /*netif_stop_queue(dev); */
4203 flush_workqueue(priv->workqueue);
4205 /* ieee80211_unregister_hw calls iwl3945_mac_stop, which flushes
4206 * priv->workqueue... so we can't take down the workqueue
4208 destroy_workqueue(priv->workqueue);
4209 priv->workqueue = NULL;
4210 iwl_free_traffic_mem(priv);
4212 free_irq(pdev->irq, priv);
4213 pci_disable_msi(pdev);
4215 pci_iounmap(pdev, priv->hw_base);
4216 pci_release_regions(pdev);
4217 pci_disable_device(pdev);
4218 pci_set_drvdata(pdev, NULL);
4220 iwl_free_channel_map(priv);
4221 iwlcore_free_geos(priv);
4222 kfree(priv->scan_cmd);
4223 if (priv->ibss_beacon)
4224 dev_kfree_skb(priv->ibss_beacon);
4226 ieee80211_free_hw(priv->hw);
4230 /*****************************************************************************
4232 * driver and module entry point
4234 *****************************************************************************/
4236 static struct pci_driver iwl3945_driver = {
4238 .id_table = iwl3945_hw_card_ids,
4239 .probe = iwl3945_pci_probe,
4240 .remove = __devexit_p(iwl3945_pci_remove),
4242 .suspend = iwl_pci_suspend,
4243 .resume = iwl_pci_resume,
4247 static int __init iwl3945_init(void)
4251 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4252 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4254 ret = iwl3945_rate_control_register();
4256 printk(KERN_ERR DRV_NAME
4257 "Unable to register rate control algorithm: %d\n", ret);
4261 ret = pci_register_driver(&iwl3945_driver);
4263 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4264 goto error_register;
4270 iwl3945_rate_control_unregister();
4274 static void __exit iwl3945_exit(void)
4276 pci_unregister_driver(&iwl3945_driver);
4277 iwl3945_rate_control_unregister();
4280 MODULE_FIRMWARE(IWL3945_MODULE_FIRMWARE(IWL3945_UCODE_API_MAX));
4282 module_param_named(antenna, iwl3945_mod_params.antenna, int, S_IRUGO);
4283 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
4284 module_param_named(swcrypto, iwl3945_mod_params.sw_crypto, int, S_IRUGO);
4285 MODULE_PARM_DESC(swcrypto,
4286 "using software crypto (default 1 [software])\n");
4287 #ifdef CONFIG_IWLWIFI_DEBUG
4288 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
4289 MODULE_PARM_DESC(debug, "debug output mask");
4291 module_param_named(disable_hw_scan, iwl3945_mod_params.disable_hw_scan,
4293 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");
4294 module_param_named(fw_restart3945, iwl3945_mod_params.restart_fw, int, S_IRUGO);
4295 MODULE_PARM_DESC(fw_restart3945, "restart firmware in case of error");
4297 module_exit(iwl3945_exit);
4298 module_init(iwl3945_init);