1 /******************************************************************************
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/pci.h>
36 #include <linux/pci-aspm.h>
37 #include <linux/slab.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/delay.h>
40 #include <linux/sched.h>
41 #include <linux/skbuff.h>
42 #include <linux/netdevice.h>
43 #include <linux/firmware.h>
44 #include <linux/etherdevice.h>
45 #include <linux/if_arp.h>
47 #include <net/ieee80211_radiotap.h>
48 #include <net/mac80211.h>
50 #include <asm/div64.h>
52 #define DRV_NAME "iwl3945"
57 #include "iwl-spectrum.h"
60 * module name, copyright, version, etc.
63 #define DRV_DESCRIPTION \
64 "Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux"
66 #ifdef CONFIG_IWLEGACY_DEBUG
73 * add "s" to indicate spectrum measurement included.
74 * we add it here to be consistent with previous releases in which
75 * this was configurable.
77 #define DRV_VERSION IWLWIFI_VERSION VD "s"
78 #define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation"
79 #define DRV_AUTHOR "<ilw@linux.intel.com>"
81 MODULE_DESCRIPTION(DRV_DESCRIPTION);
82 MODULE_VERSION(DRV_VERSION);
83 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
84 MODULE_LICENSE("GPL");
86 /* module parameters */
87 struct il_mod_params il3945_mod_params = {
91 /* the rest are 0 by default */
95 * il3945_get_antenna_flags - Get antenna flags for RXON command
96 * @il: eeprom and antenna fields are used to determine antenna flags
98 * il->eeprom39 is used to determine if antenna AUX/MAIN are reversed
99 * il3945_mod_params.antenna specifies the antenna diversity mode:
101 * IL_ANTENNA_DIVERSITY - NIC selects best antenna by itself
102 * IL_ANTENNA_MAIN - Force MAIN antenna
103 * IL_ANTENNA_AUX - Force AUX antenna
106 il3945_get_antenna_flags(const struct il_priv *il)
108 struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom;
110 switch (il3945_mod_params.antenna) {
111 case IL_ANTENNA_DIVERSITY:
114 case IL_ANTENNA_MAIN:
115 if (eeprom->antenna_switch_type)
116 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
117 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
120 if (eeprom->antenna_switch_type)
121 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_A_MSK;
122 return RXON_FLG_DIS_DIV_MSK | RXON_FLG_ANT_B_MSK;
125 /* bad antenna selector value */
126 IL_ERR("Bad antenna selector value (0x%x)\n",
127 il3945_mod_params.antenna);
129 return 0; /* "diversity" is default if error */
133 il3945_set_ccmp_dynamic_key_info(struct il_priv *il,
134 struct ieee80211_key_conf *keyconf, u8 sta_id)
137 __le16 key_flags = 0;
140 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
141 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
143 if (sta_id == il->ctx.bcast_sta_id)
144 key_flags |= STA_KEY_MULTICAST_MSK;
146 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
147 keyconf->hw_key_idx = keyconf->keyidx;
148 key_flags &= ~STA_KEY_FLG_INVALID;
150 spin_lock_irqsave(&il->sta_lock, flags);
151 il->stations[sta_id].keyinfo.cipher = keyconf->cipher;
152 il->stations[sta_id].keyinfo.keylen = keyconf->keylen;
153 memcpy(il->stations[sta_id].keyinfo.key, keyconf->key, keyconf->keylen);
155 memcpy(il->stations[sta_id].sta.key.key, keyconf->key, keyconf->keylen);
157 if ((il->stations[sta_id].sta.key.
158 key_flags & STA_KEY_FLG_ENCRYPT_MSK) == STA_KEY_FLG_NO_ENC)
159 il->stations[sta_id].sta.key.key_offset =
160 il_get_free_ucode_key_idx(il);
161 /* else, we are overriding an existing key => no need to allocated room
164 WARN(il->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
165 "no space for a new key");
167 il->stations[sta_id].sta.key.key_flags = key_flags;
168 il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
169 il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
171 D_INFO("hwcrypto: modify ucode station key info\n");
173 ret = il_send_add_sta(il, &il->stations[sta_id].sta, CMD_ASYNC);
175 spin_unlock_irqrestore(&il->sta_lock, flags);
181 il3945_set_tkip_dynamic_key_info(struct il_priv *il,
182 struct ieee80211_key_conf *keyconf, u8 sta_id)
188 il3945_set_wep_dynamic_key_info(struct il_priv *il,
189 struct ieee80211_key_conf *keyconf, u8 sta_id)
195 il3945_clear_sta_key_info(struct il_priv *il, u8 sta_id)
198 struct il_addsta_cmd sta_cmd;
200 spin_lock_irqsave(&il->sta_lock, flags);
201 memset(&il->stations[sta_id].keyinfo, 0, sizeof(struct il_hw_key));
202 memset(&il->stations[sta_id].sta.key, 0, sizeof(struct il4965_keyinfo));
203 il->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
204 il->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
205 il->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
206 memcpy(&sta_cmd, &il->stations[sta_id].sta,
207 sizeof(struct il_addsta_cmd));
208 spin_unlock_irqrestore(&il->sta_lock, flags);
210 D_INFO("hwcrypto: clear ucode station key info\n");
211 return il_send_add_sta(il, &sta_cmd, CMD_SYNC);
215 il3945_set_dynamic_key(struct il_priv *il, struct ieee80211_key_conf *keyconf,
220 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
222 switch (keyconf->cipher) {
223 case WLAN_CIPHER_SUITE_CCMP:
224 ret = il3945_set_ccmp_dynamic_key_info(il, keyconf, sta_id);
226 case WLAN_CIPHER_SUITE_TKIP:
227 ret = il3945_set_tkip_dynamic_key_info(il, keyconf, sta_id);
229 case WLAN_CIPHER_SUITE_WEP40:
230 case WLAN_CIPHER_SUITE_WEP104:
231 ret = il3945_set_wep_dynamic_key_info(il, keyconf, sta_id);
234 IL_ERR("Unknown alg: %s alg=%x\n", __func__, keyconf->cipher);
238 D_WEP("Set dynamic key: alg=%x len=%d idx=%d sta=%d ret=%d\n",
239 keyconf->cipher, keyconf->keylen, keyconf->keyidx, sta_id, ret);
245 il3945_remove_static_key(struct il_priv *il)
247 int ret = -EOPNOTSUPP;
253 il3945_set_static_key(struct il_priv *il, struct ieee80211_key_conf *key)
255 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
256 key->cipher == WLAN_CIPHER_SUITE_WEP104)
259 IL_ERR("Static key invalid: cipher %x\n", key->cipher);
264 il3945_clear_free_frames(struct il_priv *il)
266 struct list_head *element;
268 D_INFO("%d frames on pre-allocated heap on clear.\n", il->frames_count);
270 while (!list_empty(&il->free_frames)) {
271 element = il->free_frames.next;
273 kfree(list_entry(element, struct il3945_frame, list));
277 if (il->frames_count) {
278 IL_WARN("%d frames still in use. Did we lose one?\n",
280 il->frames_count = 0;
284 static struct il3945_frame *
285 il3945_get_free_frame(struct il_priv *il)
287 struct il3945_frame *frame;
288 struct list_head *element;
289 if (list_empty(&il->free_frames)) {
290 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
292 IL_ERR("Could not allocate frame!\n");
300 element = il->free_frames.next;
302 return list_entry(element, struct il3945_frame, list);
306 il3945_free_frame(struct il_priv *il, struct il3945_frame *frame)
308 memset(frame, 0, sizeof(*frame));
309 list_add(&frame->list, &il->free_frames);
313 il3945_fill_beacon_frame(struct il_priv *il, struct ieee80211_hdr *hdr,
317 if (!il_is_associated(il) || !il->beacon_skb)
320 if (il->beacon_skb->len > left)
323 memcpy(hdr, il->beacon_skb->data, il->beacon_skb->len);
325 return il->beacon_skb->len;
329 il3945_send_beacon_cmd(struct il_priv *il)
331 struct il3945_frame *frame;
332 unsigned int frame_size;
336 frame = il3945_get_free_frame(il);
339 IL_ERR("Could not obtain free frame buffer for beacon "
344 rate = il_get_lowest_plcp(il, &il->ctx);
346 frame_size = il3945_hw_get_beacon_cmd(il, frame, rate);
348 rc = il_send_cmd_pdu(il, C_TX_BEACON, frame_size, &frame->u.cmd[0]);
350 il3945_free_frame(il, frame);
356 il3945_unset_hw_params(struct il_priv *il)
358 if (il->_3945.shared_virt)
359 dma_free_coherent(&il->pci_dev->dev,
360 sizeof(struct il3945_shared),
361 il->_3945.shared_virt, il->_3945.shared_phys);
365 il3945_build_tx_cmd_hwcrypto(struct il_priv *il, struct ieee80211_tx_info *info,
366 struct il_device_cmd *cmd,
367 struct sk_buff *skb_frag, int sta_id)
369 struct il3945_tx_cmd *tx_cmd = (struct il3945_tx_cmd *)cmd->cmd.payload;
370 struct il_hw_key *keyinfo = &il->stations[sta_id].keyinfo;
374 switch (keyinfo->cipher) {
375 case WLAN_CIPHER_SUITE_CCMP:
376 tx_cmd->sec_ctl = TX_CMD_SEC_CCM;
377 memcpy(tx_cmd->key, keyinfo->key, keyinfo->keylen);
378 D_TX("tx_cmd with AES hwcrypto\n");
381 case WLAN_CIPHER_SUITE_TKIP:
384 case WLAN_CIPHER_SUITE_WEP104:
385 tx_cmd->sec_ctl |= TX_CMD_SEC_KEY128;
387 case WLAN_CIPHER_SUITE_WEP40:
389 TX_CMD_SEC_WEP | (info->control.hw_key->
390 hw_key_idx & TX_CMD_SEC_MSK) <<
393 memcpy(&tx_cmd->key[3], keyinfo->key, keyinfo->keylen);
395 D_TX("Configuring packet for WEP encryption " "with key %d\n",
396 info->control.hw_key->hw_key_idx);
400 IL_ERR("Unknown encode cipher %x\n", keyinfo->cipher);
406 * handle build C_TX command notification.
409 il3945_build_tx_cmd_basic(struct il_priv *il, struct il_device_cmd *cmd,
410 struct ieee80211_tx_info *info,
411 struct ieee80211_hdr *hdr, u8 std_id)
413 struct il3945_tx_cmd *tx_cmd = (struct il3945_tx_cmd *)cmd->cmd.payload;
414 __le32 tx_flags = tx_cmd->tx_flags;
415 __le16 fc = hdr->frame_control;
417 tx_cmd->stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
418 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) {
419 tx_flags |= TX_CMD_FLG_ACK_MSK;
420 if (ieee80211_is_mgmt(fc))
421 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
422 if (ieee80211_is_probe_resp(fc) &&
423 !(le16_to_cpu(hdr->seq_ctrl) & 0xf))
424 tx_flags |= TX_CMD_FLG_TSF_MSK;
426 tx_flags &= (~TX_CMD_FLG_ACK_MSK);
427 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
430 tx_cmd->sta_id = std_id;
431 if (ieee80211_has_morefrags(fc))
432 tx_flags |= TX_CMD_FLG_MORE_FRAG_MSK;
434 if (ieee80211_is_data_qos(fc)) {
435 u8 *qc = ieee80211_get_qos_ctl(hdr);
436 tx_cmd->tid_tspec = qc[0] & 0xf;
437 tx_flags &= ~TX_CMD_FLG_SEQ_CTL_MSK;
439 tx_flags |= TX_CMD_FLG_SEQ_CTL_MSK;
442 il_tx_cmd_protection(il, info, fc, &tx_flags);
444 tx_flags &= ~(TX_CMD_FLG_ANT_SEL_MSK);
445 if (ieee80211_is_mgmt(fc)) {
446 if (ieee80211_is_assoc_req(fc) || ieee80211_is_reassoc_req(fc))
447 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(3);
449 tx_cmd->timeout.pm_frame_timeout = cpu_to_le16(2);
451 tx_cmd->timeout.pm_frame_timeout = 0;
454 tx_cmd->driver_txop = 0;
455 tx_cmd->tx_flags = tx_flags;
456 tx_cmd->next_frame_len = 0;
460 * start C_TX command process
463 il3945_tx_skb(struct il_priv *il, struct sk_buff *skb)
465 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
466 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
467 struct il3945_tx_cmd *tx_cmd;
468 struct il_tx_queue *txq = NULL;
469 struct il_queue *q = NULL;
470 struct il_device_cmd *out_cmd;
471 struct il_cmd_meta *out_meta;
472 dma_addr_t phys_addr;
473 dma_addr_t txcmd_phys;
474 int txq_id = skb_get_queue_mapping(skb);
475 u16 len, idx, hdr_len;
481 u8 wait_write_ptr = 0;
484 spin_lock_irqsave(&il->lock, flags);
485 if (il_is_rfkill(il)) {
486 D_DROP("Dropping - RF KILL\n");
490 if ((ieee80211_get_tx_rate(il->hw, info)->hw_value & 0xFF) ==
492 IL_ERR("ERROR: No TX rate available.\n");
496 unicast = !is_multicast_ether_addr(hdr->addr1);
499 fc = hdr->frame_control;
501 #ifdef CONFIG_IWLEGACY_DEBUG
502 if (ieee80211_is_auth(fc))
503 D_TX("Sending AUTH frame\n");
504 else if (ieee80211_is_assoc_req(fc))
505 D_TX("Sending ASSOC frame\n");
506 else if (ieee80211_is_reassoc_req(fc))
507 D_TX("Sending REASSOC frame\n");
510 spin_unlock_irqrestore(&il->lock, flags);
512 hdr_len = ieee80211_hdrlen(fc);
514 /* Find idx into station table for destination station */
515 sta_id = il_sta_id_or_broadcast(il, &il->ctx, info->control.sta);
516 if (sta_id == IL_INVALID_STATION) {
517 D_DROP("Dropping - INVALID STATION: %pM\n", hdr->addr1);
521 D_RATE("station Id %d\n", sta_id);
523 if (ieee80211_is_data_qos(fc)) {
524 u8 *qc = ieee80211_get_qos_ctl(hdr);
525 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
526 if (unlikely(tid >= MAX_TID_COUNT))
530 /* Descriptor for chosen Tx queue */
531 txq = &il->txq[txq_id];
534 if ((il_queue_space(q) < q->high_mark))
537 spin_lock_irqsave(&il->lock, flags);
539 idx = il_get_cmd_idx(q, q->write_ptr, 0);
541 /* Set up driver data for this TFD */
542 memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct il_tx_info));
543 txq->txb[q->write_ptr].skb = skb;
544 txq->txb[q->write_ptr].ctx = &il->ctx;
546 /* Init first empty entry in queue's array of Tx/cmd buffers */
547 out_cmd = txq->cmd[idx];
548 out_meta = &txq->meta[idx];
549 tx_cmd = (struct il3945_tx_cmd *)out_cmd->cmd.payload;
550 memset(&out_cmd->hdr, 0, sizeof(out_cmd->hdr));
551 memset(tx_cmd, 0, sizeof(*tx_cmd));
554 * Set up the Tx-command (not MAC!) header.
555 * Store the chosen Tx queue and TFD idx within the sequence field;
556 * after Tx, uCode's Tx response will return this value so driver can
557 * locate the frame within the tx queue and do post-tx processing.
559 out_cmd->hdr.cmd = C_TX;
560 out_cmd->hdr.sequence =
562 (QUEUE_TO_SEQ(txq_id) | IDX_TO_SEQ(q->write_ptr)));
564 /* Copy MAC header from skb into command buffer */
565 memcpy(tx_cmd->hdr, hdr, hdr_len);
567 if (info->control.hw_key)
568 il3945_build_tx_cmd_hwcrypto(il, info, out_cmd, skb, sta_id);
570 /* TODO need this for burst mode later on */
571 il3945_build_tx_cmd_basic(il, out_cmd, info, hdr, sta_id);
573 il3945_hw_build_tx_cmd_rate(il, out_cmd, info, hdr, sta_id);
575 /* Total # bytes to be transmitted */
576 len = (u16) skb->len;
577 tx_cmd->len = cpu_to_le16(len);
579 il_dbg_log_tx_data_frame(il, len, hdr);
580 il_update_stats(il, true, fc, len);
581 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_A_MSK;
582 tx_cmd->tx_flags &= ~TX_CMD_FLG_ANT_B_MSK;
584 if (!ieee80211_has_morefrags(hdr->frame_control)) {
585 txq->need_update = 1;
588 txq->need_update = 0;
591 D_TX("sequence nr = 0X%x\n", le16_to_cpu(out_cmd->hdr.sequence));
592 D_TX("tx_flags = 0X%x\n", le32_to_cpu(tx_cmd->tx_flags));
593 il_print_hex_dump(il, IL_DL_TX, tx_cmd, sizeof(*tx_cmd));
594 il_print_hex_dump(il, IL_DL_TX, (u8 *) tx_cmd->hdr,
595 ieee80211_hdrlen(fc));
598 * Use the first empty entry in this queue's command buffer array
599 * to contain the Tx command and MAC header concatenated together
600 * (payload data will be in another buffer).
601 * Size of this varies, due to varying MAC header length.
602 * If end is not dword aligned, we'll have 2 extra bytes at the end
603 * of the MAC header (device reads on dword boundaries).
604 * We'll tell device about this padding later.
607 sizeof(struct il3945_tx_cmd) + sizeof(struct il_cmd_header) +
609 len = (len + 3) & ~3;
611 /* Physical address of this Tx command's header (not MAC header!),
612 * within command buffer array. */
614 pci_map_single(il->pci_dev, &out_cmd->hdr, len, PCI_DMA_TODEVICE);
615 /* we do not map meta data ... so we can safely access address to
616 * provide to unmap command*/
617 dma_unmap_addr_set(out_meta, mapping, txcmd_phys);
618 dma_unmap_len_set(out_meta, len, len);
620 /* Add buffer containing Tx command and MAC(!) header to TFD's
622 il->cfg->ops->lib->txq_attach_buf_to_tfd(il, txq, txcmd_phys, len, 1,
625 /* Set up TFD's 2nd entry to point directly to remainder of skb,
626 * if any (802.11 null frames have no payload). */
627 len = skb->len - hdr_len;
630 pci_map_single(il->pci_dev, skb->data + hdr_len, len,
632 il->cfg->ops->lib->txq_attach_buf_to_tfd(il, txq, phys_addr,
633 len, 0, U32_PAD(len));
636 /* Tell device the write idx *just past* this latest filled TFD */
637 q->write_ptr = il_queue_inc_wrap(q->write_ptr, q->n_bd);
638 il_txq_update_write_ptr(il, txq);
639 spin_unlock_irqrestore(&il->lock, flags);
641 if (il_queue_space(q) < q->high_mark && il->mac80211_registered) {
642 if (wait_write_ptr) {
643 spin_lock_irqsave(&il->lock, flags);
644 txq->need_update = 1;
645 il_txq_update_write_ptr(il, txq);
646 spin_unlock_irqrestore(&il->lock, flags);
649 il_stop_queue(il, txq);
655 spin_unlock_irqrestore(&il->lock, flags);
661 il3945_get_measurement(struct il_priv *il,
662 struct ieee80211_measurement_params *params, u8 type)
664 struct il_spectrum_cmd spectrum;
665 struct il_rx_pkt *pkt;
666 struct il_host_cmd cmd = {
667 .id = C_SPECTRUM_MEASUREMENT,
668 .data = (void *)&spectrum,
669 .flags = CMD_WANT_SKB,
671 u32 add_time = le64_to_cpu(params->start_time);
673 int spectrum_resp_status;
674 int duration = le16_to_cpu(params->duration);
676 if (il_is_associated(il))
678 il_usecs_to_beacons(il,
679 le64_to_cpu(params->start_time) -
681 le16_to_cpu(il->timing.beacon_interval));
683 memset(&spectrum, 0, sizeof(spectrum));
685 spectrum.channel_count = cpu_to_le16(1);
687 RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
688 spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
689 cmd.len = sizeof(spectrum);
690 spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
692 if (il_is_associated(il))
693 spectrum.start_time =
694 il_add_beacon_time(il, il->_3945.last_beacon_time, add_time,
695 le16_to_cpu(il->timing.beacon_interval));
697 spectrum.start_time = 0;
699 spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
700 spectrum.channels[0].channel = params->channel;
701 spectrum.channels[0].type = type;
702 if (il->active.flags & RXON_FLG_BAND_24G_MSK)
704 RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK |
705 RXON_FLG_TGG_PROTECT_MSK;
707 rc = il_send_cmd_sync(il, &cmd);
711 pkt = (struct il_rx_pkt *)cmd.reply_page;
712 if (pkt->hdr.flags & IL_CMD_FAILED_MSK) {
713 IL_ERR("Bad return from N_RX_ON_ASSOC command\n");
717 spectrum_resp_status = le16_to_cpu(pkt->u.spectrum.status);
718 switch (spectrum_resp_status) {
719 case 0: /* Command will be handled */
720 if (pkt->u.spectrum.id != 0xff) {
721 D_INFO("Replaced existing measurement: %d\n",
723 il->measurement_status &= ~MEASUREMENT_READY;
725 il->measurement_status |= MEASUREMENT_ACTIVE;
729 case 1: /* Command will not be handled */
734 il_free_pages(il, cmd.reply_page);
740 il3945_hdl_alive(struct il_priv *il, struct il_rx_buf *rxb)
742 struct il_rx_pkt *pkt = rxb_addr(rxb);
743 struct il_alive_resp *palive;
744 struct delayed_work *pwork;
746 palive = &pkt->u.alive_frame;
748 D_INFO("Alive ucode status 0x%08X revision " "0x%01X 0x%01X\n",
749 palive->is_valid, palive->ver_type, palive->ver_subtype);
751 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
752 D_INFO("Initialization Alive received.\n");
753 memcpy(&il->card_alive_init, &pkt->u.alive_frame,
754 sizeof(struct il_alive_resp));
755 pwork = &il->init_alive_start;
757 D_INFO("Runtime Alive received.\n");
758 memcpy(&il->card_alive, &pkt->u.alive_frame,
759 sizeof(struct il_alive_resp));
760 pwork = &il->alive_start;
761 il3945_disable_events(il);
764 /* We delay the ALIVE response by 5ms to
765 * give the HW RF Kill time to activate... */
766 if (palive->is_valid == UCODE_VALID_OK)
767 queue_delayed_work(il->workqueue, pwork, msecs_to_jiffies(5));
769 IL_WARN("uCode did not respond OK.\n");
773 il3945_hdl_add_sta(struct il_priv *il, struct il_rx_buf *rxb)
775 #ifdef CONFIG_IWLEGACY_DEBUG
776 struct il_rx_pkt *pkt = rxb_addr(rxb);
779 D_RX("Received C_ADD_STA: 0x%02X\n", pkt->u.status);
783 il3945_hdl_beacon(struct il_priv *il, struct il_rx_buf *rxb)
785 struct il_rx_pkt *pkt = rxb_addr(rxb);
786 struct il3945_beacon_notif *beacon = &(pkt->u.beacon_status);
787 #ifdef CONFIG_IWLEGACY_DEBUG
788 u8 rate = beacon->beacon_notify_hdr.rate;
790 D_RX("beacon status %x retries %d iss %d " "tsf %d %d rate %d\n",
791 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
792 beacon->beacon_notify_hdr.failure_frame,
793 le32_to_cpu(beacon->ibss_mgr_status),
794 le32_to_cpu(beacon->high_tsf), le32_to_cpu(beacon->low_tsf), rate);
797 il->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
801 /* Handle notification from uCode that card's power state is changing
802 * due to software, hardware, or critical temperature RFKILL */
804 il3945_hdl_card_state(struct il_priv *il, struct il_rx_buf *rxb)
806 struct il_rx_pkt *pkt = rxb_addr(rxb);
807 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
808 unsigned long status = il->status;
810 IL_WARN("Card state received: HW:%s SW:%s\n",
811 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
812 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
814 _il_wr(il, CSR_UCODE_DRV_GP1_SET, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
816 if (flags & HW_CARD_DISABLED)
817 set_bit(S_RF_KILL_HW, &il->status);
819 clear_bit(S_RF_KILL_HW, &il->status);
823 if ((test_bit(S_RF_KILL_HW, &status) !=
824 test_bit(S_RF_KILL_HW, &il->status)))
825 wiphy_rfkill_set_hw_state(il->hw->wiphy,
826 test_bit(S_RF_KILL_HW, &il->status));
828 wake_up(&il->wait_command_queue);
832 * il3945_setup_handlers - Initialize Rx handler callbacks
834 * Setup the RX handlers for each of the reply types sent from the uCode
837 * This function chains into the hardware specific files for them to setup
838 * any hardware specific handlers as well.
841 il3945_setup_handlers(struct il_priv *il)
843 il->handlers[N_ALIVE] = il3945_hdl_alive;
844 il->handlers[C_ADD_STA] = il3945_hdl_add_sta;
845 il->handlers[N_ERROR] = il_hdl_error;
846 il->handlers[N_CHANNEL_SWITCH] = il_hdl_csa;
847 il->handlers[N_SPECTRUM_MEASUREMENT] = il_hdl_spectrum_measurement;
848 il->handlers[N_PM_SLEEP] = il_hdl_pm_sleep;
849 il->handlers[N_PM_DEBUG_STATS] = il_hdl_pm_debug_stats;
850 il->handlers[N_BEACON] = il3945_hdl_beacon;
853 * The same handler is used for both the REPLY to a discrete
854 * stats request from the host as well as for the periodic
855 * stats notifications (after received beacons) from the uCode.
857 il->handlers[C_STATS] = il3945_hdl_c_stats;
858 il->handlers[N_STATS] = il3945_hdl_stats;
860 il_setup_rx_scan_handlers(il);
861 il->handlers[N_CARD_STATE] = il3945_hdl_card_state;
863 /* Set up hardware specific Rx handlers */
864 il3945_hw_handler_setup(il);
867 /************************** RX-FUNCTIONS ****************************/
869 * Rx theory of operation
871 * The host allocates 32 DMA target addresses and passes the host address
872 * to the firmware at register IL_RFDS_TBL_LOWER + N * RFD_SIZE where N is
876 * The host/firmware share two idx registers for managing the Rx buffers.
878 * The READ idx maps to the first position that the firmware may be writing
879 * to -- the driver can read up to (but not including) this position and get
881 * The READ idx is managed by the firmware once the card is enabled.
883 * The WRITE idx maps to the last position the driver has read from -- the
884 * position preceding WRITE is the last slot the firmware can place a packet.
886 * The queue is empty (no good data) if WRITE = READ - 1, and is full if
889 * During initialization, the host sets up the READ queue position to the first
890 * IDX position, and WRITE to the last (READ - 1 wrapped)
892 * When the firmware places a packet in a buffer, it will advance the READ idx
893 * and fire the RX interrupt. The driver can then query the READ idx and
894 * process as many packets as possible, moving the WRITE idx forward as it
895 * resets the Rx queue buffers with new memory.
897 * The management in the driver is as follows:
898 * + A list of pre-allocated SKBs is stored in iwl->rxq->rx_free. When
899 * iwl->rxq->free_count drops to or below RX_LOW_WATERMARK, work is scheduled
900 * to replenish the iwl->rxq->rx_free.
901 * + In il3945_rx_replenish (scheduled) if 'processed' != 'read' then the
902 * iwl->rxq is replenished and the READ IDX is updated (updating the
903 * 'processed' and 'read' driver idxes as well)
904 * + A received packet is processed and handed to the kernel network stack,
905 * detached from the iwl->rxq. The driver 'processed' idx is updated.
906 * + The Host/Firmware iwl->rxq is replenished at tasklet time from the rx_free
907 * list. If there are no allocated buffers in iwl->rxq->rx_free, the READ
908 * IDX is not incremented and iwl->status(RX_STALLED) is set. If there
909 * were enough free buffers and RX_STALLED is set it is cleared.
914 * il3945_rx_replenish() Replenishes rx_free list from rx_used, and calls
915 * il3945_rx_queue_restock
916 * il3945_rx_queue_restock() Moves available buffers from rx_free into Rx
917 * queue, updates firmware pointers, and updates
918 * the WRITE idx. If insufficient rx_free buffers
919 * are available, schedules il3945_rx_replenish
921 * -- enable interrupts --
922 * ISR - il3945_rx() Detach il_rx_bufs from pool up to the
923 * READ IDX, detaching the SKB from the pool.
924 * Moves the packet buffer from queue to rx_used.
925 * Calls il3945_rx_queue_restock to refill any empty
932 * il3945_dma_addr2rbd_ptr - convert a DMA address to a uCode read buffer ptr
935 il3945_dma_addr2rbd_ptr(struct il_priv *il, dma_addr_t dma_addr)
937 return cpu_to_le32((u32) dma_addr);
941 * il3945_rx_queue_restock - refill RX queue from pre-allocated pool
943 * If there are slots in the RX queue that need to be restocked,
944 * and we have free pre-allocated buffers, fill the ranks as much
945 * as we can, pulling from rx_free.
947 * This moves the 'write' idx forward to catch up with 'processed', and
948 * also updates the memory address in the firmware to reference the new
952 il3945_rx_queue_restock(struct il_priv *il)
954 struct il_rx_queue *rxq = &il->rxq;
955 struct list_head *element;
956 struct il_rx_buf *rxb;
960 spin_lock_irqsave(&rxq->lock, flags);
961 write = rxq->write & ~0x7;
962 while (il_rx_queue_space(rxq) > 0 && rxq->free_count) {
963 /* Get next free Rx buffer, remove from free list */
964 element = rxq->rx_free.next;
965 rxb = list_entry(element, struct il_rx_buf, list);
968 /* Point to Rx buffer via next RBD in circular buffer */
969 rxq->bd[rxq->write] =
970 il3945_dma_addr2rbd_ptr(il, rxb->page_dma);
971 rxq->queue[rxq->write] = rxb;
972 rxq->write = (rxq->write + 1) & RX_QUEUE_MASK;
975 spin_unlock_irqrestore(&rxq->lock, flags);
976 /* If the pre-allocated buffer pool is dropping low, schedule to
978 if (rxq->free_count <= RX_LOW_WATERMARK)
979 queue_work(il->workqueue, &il->rx_replenish);
981 /* If we've added more space for the firmware to place data, tell it.
982 * Increment device's write pointer in multiples of 8. */
983 if (rxq->write_actual != (rxq->write & ~0x7) ||
984 abs(rxq->write - rxq->read) > 7) {
985 spin_lock_irqsave(&rxq->lock, flags);
986 rxq->need_update = 1;
987 spin_unlock_irqrestore(&rxq->lock, flags);
988 il_rx_queue_update_write_ptr(il, rxq);
993 * il3945_rx_replenish - Move all used packet from rx_used to rx_free
995 * When moving to rx_free an SKB is allocated for the slot.
997 * Also restock the Rx queue via il3945_rx_queue_restock.
998 * This is called as a scheduled work item (except for during initialization)
1001 il3945_rx_allocate(struct il_priv *il, gfp_t priority)
1003 struct il_rx_queue *rxq = &il->rxq;
1004 struct list_head *element;
1005 struct il_rx_buf *rxb;
1007 unsigned long flags;
1008 gfp_t gfp_mask = priority;
1011 spin_lock_irqsave(&rxq->lock, flags);
1013 if (list_empty(&rxq->rx_used)) {
1014 spin_unlock_irqrestore(&rxq->lock, flags);
1017 spin_unlock_irqrestore(&rxq->lock, flags);
1019 if (rxq->free_count > RX_LOW_WATERMARK)
1020 gfp_mask |= __GFP_NOWARN;
1022 if (il->hw_params.rx_page_order > 0)
1023 gfp_mask |= __GFP_COMP;
1025 /* Alloc a new receive buffer */
1026 page = alloc_pages(gfp_mask, il->hw_params.rx_page_order);
1028 if (net_ratelimit())
1029 D_INFO("Failed to allocate SKB buffer.\n");
1030 if (rxq->free_count <= RX_LOW_WATERMARK &&
1032 IL_ERR("Failed to allocate SKB buffer with %0x."
1033 "Only %u free buffers remaining.\n",
1034 priority, rxq->free_count);
1035 /* We don't reschedule replenish work here -- we will
1036 * call the restock method and if it still needs
1037 * more buffers it will schedule replenish */
1041 spin_lock_irqsave(&rxq->lock, flags);
1042 if (list_empty(&rxq->rx_used)) {
1043 spin_unlock_irqrestore(&rxq->lock, flags);
1044 __free_pages(page, il->hw_params.rx_page_order);
1047 element = rxq->rx_used.next;
1048 rxb = list_entry(element, struct il_rx_buf, list);
1050 spin_unlock_irqrestore(&rxq->lock, flags);
1053 /* Get physical address of RB/SKB */
1055 pci_map_page(il->pci_dev, page, 0,
1056 PAGE_SIZE << il->hw_params.rx_page_order,
1057 PCI_DMA_FROMDEVICE);
1059 spin_lock_irqsave(&rxq->lock, flags);
1061 list_add_tail(&rxb->list, &rxq->rx_free);
1063 il->alloc_rxb_page++;
1065 spin_unlock_irqrestore(&rxq->lock, flags);
1070 il3945_rx_queue_reset(struct il_priv *il, struct il_rx_queue *rxq)
1072 unsigned long flags;
1074 spin_lock_irqsave(&rxq->lock, flags);
1075 INIT_LIST_HEAD(&rxq->rx_free);
1076 INIT_LIST_HEAD(&rxq->rx_used);
1077 /* Fill the rx_used queue with _all_ of the Rx buffers */
1078 for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) {
1079 /* In the reset function, these buffers may have been allocated
1080 * to an SKB, so we need to unmap and free potential storage */
1081 if (rxq->pool[i].page != NULL) {
1082 pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma,
1083 PAGE_SIZE << il->hw_params.rx_page_order,
1084 PCI_DMA_FROMDEVICE);
1085 __il_free_pages(il, rxq->pool[i].page);
1086 rxq->pool[i].page = NULL;
1088 list_add_tail(&rxq->pool[i].list, &rxq->rx_used);
1091 /* Set us so that we have processed and used all buffers, but have
1092 * not restocked the Rx queue with fresh buffers */
1093 rxq->read = rxq->write = 0;
1094 rxq->write_actual = 0;
1095 rxq->free_count = 0;
1096 spin_unlock_irqrestore(&rxq->lock, flags);
1100 il3945_rx_replenish(void *data)
1102 struct il_priv *il = data;
1103 unsigned long flags;
1105 il3945_rx_allocate(il, GFP_KERNEL);
1107 spin_lock_irqsave(&il->lock, flags);
1108 il3945_rx_queue_restock(il);
1109 spin_unlock_irqrestore(&il->lock, flags);
1113 il3945_rx_replenish_now(struct il_priv *il)
1115 il3945_rx_allocate(il, GFP_ATOMIC);
1117 il3945_rx_queue_restock(il);
1120 /* Assumes that the skb field of the buffers in 'pool' is kept accurate.
1121 * If an SKB has been detached, the POOL needs to have its SKB set to NULL
1122 * This free routine walks the list of POOL entries and if SKB is set to
1123 * non NULL it is unmapped and freed
1126 il3945_rx_queue_free(struct il_priv *il, struct il_rx_queue *rxq)
1129 for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) {
1130 if (rxq->pool[i].page != NULL) {
1131 pci_unmap_page(il->pci_dev, rxq->pool[i].page_dma,
1132 PAGE_SIZE << il->hw_params.rx_page_order,
1133 PCI_DMA_FROMDEVICE);
1134 __il_free_pages(il, rxq->pool[i].page);
1135 rxq->pool[i].page = NULL;
1139 dma_free_coherent(&il->pci_dev->dev, 4 * RX_QUEUE_SIZE, rxq->bd,
1141 dma_free_coherent(&il->pci_dev->dev, sizeof(struct il_rb_status),
1142 rxq->rb_stts, rxq->rb_stts_dma);
1144 rxq->rb_stts = NULL;
1147 /* Convert linear signal-to-noise ratio into dB */
1148 static u8 ratio2dB[100] = {
1149 /* 0 1 2 3 4 5 6 7 8 9 */
1150 0, 0, 6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1151 20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1152 26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1153 29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1154 32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1155 34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1156 36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1157 37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1158 38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1159 39, 39, 39, 39, 39, 40, 40, 40, 40, 40 /* 90 - 99 */
1162 /* Calculates a relative dB value from a ratio of linear
1163 * (i.e. not dB) signal levels.
1164 * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1166 il3945_calc_db_from_ratio(int sig_ratio)
1168 /* 1000:1 or higher just report as 60 dB */
1169 if (sig_ratio >= 1000)
1172 /* 100:1 or higher, divide by 10 and use table,
1173 * add 20 dB to make up for divide by 10 */
1174 if (sig_ratio >= 100)
1175 return 20 + (int)ratio2dB[sig_ratio / 10];
1177 /* We shouldn't see this */
1181 /* Use table for ratios 1:1 - 99:1 */
1182 return (int)ratio2dB[sig_ratio];
1186 * il3945_rx_handle - Main entry function for receiving responses from uCode
1188 * Uses the il->handlers callback function array to invoke
1189 * the appropriate handlers, including command responses,
1190 * frame-received notifications, and other notifications.
1193 il3945_rx_handle(struct il_priv *il)
1195 struct il_rx_buf *rxb;
1196 struct il_rx_pkt *pkt;
1197 struct il_rx_queue *rxq = &il->rxq;
1200 unsigned long flags;
1203 int total_empty = 0;
1205 /* uCode's read idx (stored in shared DRAM) indicates the last Rx
1206 * buffer that the driver may process (last buffer filled by ucode). */
1207 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1210 /* calculate total frames need to be restock after handling RX */
1211 total_empty = r - rxq->write_actual;
1212 if (total_empty < 0)
1213 total_empty += RX_QUEUE_SIZE;
1215 if (total_empty > (RX_QUEUE_SIZE / 2))
1217 /* Rx interrupt, but nothing sent from uCode */
1219 D_RX("r = %d, i = %d\n", r, i);
1224 rxb = rxq->queue[i];
1226 /* If an RXB doesn't have a Rx queue slot associated with it,
1227 * then a bug has been introduced in the queue refilling
1228 * routines -- catch it here */
1229 BUG_ON(rxb == NULL);
1231 rxq->queue[i] = NULL;
1233 pci_unmap_page(il->pci_dev, rxb->page_dma,
1234 PAGE_SIZE << il->hw_params.rx_page_order,
1235 PCI_DMA_FROMDEVICE);
1236 pkt = rxb_addr(rxb);
1238 len = le32_to_cpu(pkt->len_n_flags) & IL_RX_FRAME_SIZE_MSK;
1239 len += sizeof(u32); /* account for status word */
1241 /* Reclaim a command buffer only if this packet is a response
1242 * to a (driver-originated) command.
1243 * If the packet (e.g. Rx frame) originated from uCode,
1244 * there is no command buffer to reclaim.
1245 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1246 * but apparently a few don't get set; catch them here. */
1247 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1248 pkt->hdr.cmd != N_STATS && pkt->hdr.cmd != C_TX;
1250 /* Based on type of command response or notification,
1251 * handle those that need handling via function in
1252 * handlers table. See il3945_setup_handlers() */
1253 if (il->handlers[pkt->hdr.cmd]) {
1254 D_RX("r = %d, i = %d, %s, 0x%02x\n", r, i,
1255 il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1256 il->isr_stats.handlers[pkt->hdr.cmd]++;
1257 il->handlers[pkt->hdr.cmd] (il, rxb);
1259 /* No handling needed */
1260 D_RX("r %d i %d No handler needed for %s, 0x%02x\n", r,
1261 i, il_get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1265 * XXX: After here, we should always check rxb->page
1266 * against NULL before touching it or its virtual
1267 * memory (pkt). Because some handler might have
1268 * already taken or freed the pages.
1272 /* Invoke any callbacks, transfer the buffer to caller,
1273 * and fire off the (possibly) blocking il_send_cmd()
1274 * as we reclaim the driver command queue */
1276 il_tx_cmd_complete(il, rxb);
1278 IL_WARN("Claim null rxb?\n");
1281 /* Reuse the page if possible. For notification packets and
1282 * SKBs that fail to Rx correctly, add them back into the
1283 * rx_free list for reuse later. */
1284 spin_lock_irqsave(&rxq->lock, flags);
1285 if (rxb->page != NULL) {
1287 pci_map_page(il->pci_dev, rxb->page, 0,
1288 PAGE_SIZE << il->hw_params.
1289 rx_page_order, PCI_DMA_FROMDEVICE);
1290 list_add_tail(&rxb->list, &rxq->rx_free);
1293 list_add_tail(&rxb->list, &rxq->rx_used);
1295 spin_unlock_irqrestore(&rxq->lock, flags);
1297 i = (i + 1) & RX_QUEUE_MASK;
1298 /* If there are a lot of unused frames,
1299 * restock the Rx queue so ucode won't assert. */
1304 il3945_rx_replenish_now(il);
1310 /* Backtrack one entry */
1313 il3945_rx_replenish_now(il);
1315 il3945_rx_queue_restock(il);
1318 /* call this function to flush any scheduled tasklet */
1320 il3945_synchronize_irq(struct il_priv *il)
1322 /* wait to make sure we flush pending tasklet */
1323 synchronize_irq(il->pci_dev->irq);
1324 tasklet_kill(&il->irq_tasklet);
1328 il3945_desc_lookup(int i)
1336 return "BAD_CHECKSUM";
1338 return "NMI_INTERRUPT";
1342 return "FATAL_ERROR";
1348 #define ERROR_START_OFFSET (1 * sizeof(u32))
1349 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1352 il3945_dump_nic_error_log(struct il_priv *il)
1355 u32 desc, time, count, base, data1;
1356 u32 blink1, blink2, ilink1, ilink2;
1358 base = le32_to_cpu(il->card_alive.error_event_table_ptr);
1360 if (!il3945_hw_valid_rtc_data_addr(base)) {
1361 IL_ERR("Not valid error log pointer 0x%08X\n", base);
1365 count = il_read_targ_mem(il, base);
1367 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1368 IL_ERR("Start IWL Error Log Dump:\n");
1369 IL_ERR("Status: 0x%08lX, count: %d\n", il->status, count);
1372 IL_ERR("Desc Time asrtPC blink2 "
1373 "ilink1 nmiPC Line\n");
1374 for (i = ERROR_START_OFFSET;
1375 i < (count * ERROR_ELEM_SIZE) + ERROR_START_OFFSET;
1376 i += ERROR_ELEM_SIZE) {
1377 desc = il_read_targ_mem(il, base + i);
1378 time = il_read_targ_mem(il, base + i + 1 * sizeof(u32));
1379 blink1 = il_read_targ_mem(il, base + i + 2 * sizeof(u32));
1380 blink2 = il_read_targ_mem(il, base + i + 3 * sizeof(u32));
1381 ilink1 = il_read_targ_mem(il, base + i + 4 * sizeof(u32));
1382 ilink2 = il_read_targ_mem(il, base + i + 5 * sizeof(u32));
1383 data1 = il_read_targ_mem(il, base + i + 6 * sizeof(u32));
1385 IL_ERR("%-13s (0x%X) %010u 0x%05X 0x%05X 0x%05X 0x%05X %u\n\n",
1386 il3945_desc_lookup(desc), desc, time, blink1, blink2,
1387 ilink1, ilink2, data1);
1392 il3945_irq_tasklet(struct il_priv *il)
1394 u32 inta, handled = 0;
1396 unsigned long flags;
1397 #ifdef CONFIG_IWLEGACY_DEBUG
1401 spin_lock_irqsave(&il->lock, flags);
1403 /* Ack/clear/reset pending uCode interrupts.
1404 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1405 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1406 inta = _il_rd(il, CSR_INT);
1407 _il_wr(il, CSR_INT, inta);
1409 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1410 * Any new interrupts that happen after this, either while we're
1411 * in this tasklet, or later, will show up in next ISR/tasklet. */
1412 inta_fh = _il_rd(il, CSR_FH_INT_STATUS);
1413 _il_wr(il, CSR_FH_INT_STATUS, inta_fh);
1415 #ifdef CONFIG_IWLEGACY_DEBUG
1416 if (il_get_debug_level(il) & IL_DL_ISR) {
1417 /* just for debug */
1418 inta_mask = _il_rd(il, CSR_INT_MASK);
1419 D_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n", inta,
1420 inta_mask, inta_fh);
1424 spin_unlock_irqrestore(&il->lock, flags);
1426 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1427 * atomic, make sure that inta covers all the interrupts that
1428 * we've discovered, even if FH interrupt came in just after
1429 * reading CSR_INT. */
1430 if (inta_fh & CSR39_FH_INT_RX_MASK)
1431 inta |= CSR_INT_BIT_FH_RX;
1432 if (inta_fh & CSR39_FH_INT_TX_MASK)
1433 inta |= CSR_INT_BIT_FH_TX;
1435 /* Now service all interrupt bits discovered above. */
1436 if (inta & CSR_INT_BIT_HW_ERR) {
1437 IL_ERR("Hardware error detected. Restarting.\n");
1439 /* Tell the device to stop sending interrupts */
1440 il_disable_interrupts(il);
1443 il_irq_handle_error(il);
1445 handled |= CSR_INT_BIT_HW_ERR;
1449 #ifdef CONFIG_IWLEGACY_DEBUG
1450 if (il_get_debug_level(il) & (IL_DL_ISR)) {
1451 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1452 if (inta & CSR_INT_BIT_SCD) {
1453 D_ISR("Scheduler finished to transmit "
1454 "the frame/frames.\n");
1455 il->isr_stats.sch++;
1458 /* Alive notification via Rx interrupt will do the real work */
1459 if (inta & CSR_INT_BIT_ALIVE) {
1460 D_ISR("Alive interrupt\n");
1461 il->isr_stats.alive++;
1465 /* Safely ignore these bits for debug checks below */
1466 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1468 /* Error detected by uCode */
1469 if (inta & CSR_INT_BIT_SW_ERR) {
1470 IL_ERR("Microcode SW error detected. " "Restarting 0x%X.\n",
1473 il_irq_handle_error(il);
1474 handled |= CSR_INT_BIT_SW_ERR;
1477 /* uCode wakes up after power-down sleep */
1478 if (inta & CSR_INT_BIT_WAKEUP) {
1479 D_ISR("Wakeup interrupt\n");
1480 il_rx_queue_update_write_ptr(il, &il->rxq);
1481 il_txq_update_write_ptr(il, &il->txq[0]);
1482 il_txq_update_write_ptr(il, &il->txq[1]);
1483 il_txq_update_write_ptr(il, &il->txq[2]);
1484 il_txq_update_write_ptr(il, &il->txq[3]);
1485 il_txq_update_write_ptr(il, &il->txq[4]);
1486 il_txq_update_write_ptr(il, &il->txq[5]);
1488 il->isr_stats.wakeup++;
1489 handled |= CSR_INT_BIT_WAKEUP;
1492 /* All uCode command responses, including Tx command responses,
1493 * Rx "responses" (frame-received notification), and other
1494 * notifications from uCode come through here*/
1495 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1496 il3945_rx_handle(il);
1498 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1501 if (inta & CSR_INT_BIT_FH_TX) {
1502 D_ISR("Tx interrupt\n");
1505 _il_wr(il, CSR_FH_INT_STATUS, (1 << 6));
1506 il_wr(il, FH39_TCSR_CREDIT(FH39_SRVC_CHNL), 0x0);
1507 handled |= CSR_INT_BIT_FH_TX;
1510 if (inta & ~handled) {
1511 IL_ERR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1512 il->isr_stats.unhandled++;
1515 if (inta & ~il->inta_mask) {
1516 IL_WARN("Disabled INTA bits 0x%08x were pending\n",
1517 inta & ~il->inta_mask);
1518 IL_WARN(" with inta_fh = 0x%08x\n", inta_fh);
1521 /* Re-enable all interrupts */
1522 /* only Re-enable if disabled by irq */
1523 if (test_bit(S_INT_ENABLED, &il->status))
1524 il_enable_interrupts(il);
1526 #ifdef CONFIG_IWLEGACY_DEBUG
1527 if (il_get_debug_level(il) & (IL_DL_ISR)) {
1528 inta = _il_rd(il, CSR_INT);
1529 inta_mask = _il_rd(il, CSR_INT_MASK);
1530 inta_fh = _il_rd(il, CSR_FH_INT_STATUS);
1531 D_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1532 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1538 il3945_get_channels_for_scan(struct il_priv *il, enum ieee80211_band band,
1539 u8 is_active, u8 n_probes,
1540 struct il3945_scan_channel *scan_ch,
1541 struct ieee80211_vif *vif)
1543 struct ieee80211_channel *chan;
1544 const struct ieee80211_supported_band *sband;
1545 const struct il_channel_info *ch_info;
1546 u16 passive_dwell = 0;
1547 u16 active_dwell = 0;
1550 sband = il_get_hw_mode(il, band);
1554 active_dwell = il_get_active_dwell_time(il, band, n_probes);
1555 passive_dwell = il_get_passive_dwell_time(il, band, vif);
1557 if (passive_dwell <= active_dwell)
1558 passive_dwell = active_dwell + 1;
1560 for (i = 0, added = 0; i < il->scan_request->n_channels; i++) {
1561 chan = il->scan_request->channels[i];
1563 if (chan->band != band)
1566 scan_ch->channel = chan->hw_value;
1568 ch_info = il_get_channel_info(il, band, scan_ch->channel);
1569 if (!il_is_channel_valid(ch_info)) {
1570 D_SCAN("Channel %d is INVALID for this band.\n",
1575 scan_ch->active_dwell = cpu_to_le16(active_dwell);
1576 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
1577 /* If passive , set up for auto-switch
1578 * and use long active_dwell time.
1580 if (!is_active || il_is_channel_passive(ch_info) ||
1581 (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)) {
1582 scan_ch->type = 0; /* passive */
1583 if (IL_UCODE_API(il->ucode_ver) == 1)
1584 scan_ch->active_dwell =
1585 cpu_to_le16(passive_dwell - 1);
1587 scan_ch->type = 1; /* active */
1590 /* Set direct probe bits. These may be used both for active
1591 * scan channels (probes gets sent right away),
1592 * or for passive channels (probes get se sent only after
1593 * hearing clear Rx packet).*/
1594 if (IL_UCODE_API(il->ucode_ver) >= 2) {
1596 scan_ch->type |= IL39_SCAN_PROBE_MASK(n_probes);
1598 /* uCode v1 does not allow setting direct probe bits on
1599 * passive channel. */
1600 if ((scan_ch->type & 1) && n_probes)
1601 scan_ch->type |= IL39_SCAN_PROBE_MASK(n_probes);
1604 /* Set txpower levels to defaults */
1605 scan_ch->tpc.dsp_atten = 110;
1606 /* scan_pwr_info->tpc.dsp_atten; */
1608 /*scan_pwr_info->tpc.tx_gain; */
1609 if (band == IEEE80211_BAND_5GHZ)
1610 scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
1612 scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
1613 /* NOTE: if we were doing 6Mb OFDM for scans we'd use
1615 * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
1619 D_SCAN("Scanning %d [%s %d]\n", scan_ch->channel,
1620 (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
1621 (scan_ch->type & 1) ? active_dwell : passive_dwell);
1627 D_SCAN("total channels to scan %d\n", added);
1632 il3945_init_hw_rates(struct il_priv *il, struct ieee80211_rate *rates)
1636 for (i = 0; i < RATE_COUNT_LEGACY; i++) {
1637 rates[i].bitrate = il3945_rates[i].ieee * 5;
1638 rates[i].hw_value = i; /* Rate scaling will work on idxes */
1639 rates[i].hw_value_short = i;
1641 if (i > IL39_LAST_OFDM_RATE || i < IL_FIRST_OFDM_RATE) {
1643 * If CCK != 1M then set short preamble rate flag.
1646 (il3945_rates[i].plcp ==
1647 10) ? 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1652 /******************************************************************************
1654 * uCode download functions
1656 ******************************************************************************/
1659 il3945_dealloc_ucode_pci(struct il_priv *il)
1661 il_free_fw_desc(il->pci_dev, &il->ucode_code);
1662 il_free_fw_desc(il->pci_dev, &il->ucode_data);
1663 il_free_fw_desc(il->pci_dev, &il->ucode_data_backup);
1664 il_free_fw_desc(il->pci_dev, &il->ucode_init);
1665 il_free_fw_desc(il->pci_dev, &il->ucode_init_data);
1666 il_free_fw_desc(il->pci_dev, &il->ucode_boot);
1670 * il3945_verify_inst_full - verify runtime uCode image in card vs. host,
1671 * looking at all data.
1674 il3945_verify_inst_full(struct il_priv *il, __le32 * image, u32 len)
1681 D_INFO("ucode inst image size is %u\n", len);
1683 il_wr(il, HBUS_TARG_MEM_RADDR, IL39_RTC_INST_LOWER_BOUND);
1686 for (; len > 0; len -= sizeof(u32), image++) {
1687 /* read data comes through single port, auto-incr addr */
1688 /* NOTE: Use the debugless read so we don't flood kernel log
1689 * if IL_DL_IO is set */
1690 val = _il_rd(il, HBUS_TARG_MEM_RDAT);
1691 if (val != le32_to_cpu(*image)) {
1692 IL_ERR("uCode INST section is invalid at "
1693 "offset 0x%x, is 0x%x, s/b 0x%x\n",
1694 save_len - len, val, le32_to_cpu(*image));
1703 D_INFO("ucode image in INSTRUCTION memory is good\n");
1709 * il3945_verify_inst_sparse - verify runtime uCode image in card vs. host,
1710 * using sample data 100 bytes apart. If these sample points are good,
1711 * it's a pretty good bet that everything between them is good, too.
1714 il3945_verify_inst_sparse(struct il_priv *il, __le32 * image, u32 len)
1721 D_INFO("ucode inst image size is %u\n", len);
1723 for (i = 0; i < len; i += 100, image += 100 / sizeof(u32)) {
1724 /* read data comes through single port, auto-incr addr */
1725 /* NOTE: Use the debugless read so we don't flood kernel log
1726 * if IL_DL_IO is set */
1727 il_wr(il, HBUS_TARG_MEM_RADDR, i + IL39_RTC_INST_LOWER_BOUND);
1728 val = _il_rd(il, HBUS_TARG_MEM_RDAT);
1729 if (val != le32_to_cpu(*image)) {
1730 #if 0 /* Enable this if you want to see details */
1731 IL_ERR("uCode INST section is invalid at "
1732 "offset 0x%x, is 0x%x, s/b 0x%x\n", i, val,
1746 * il3945_verify_ucode - determine which instruction image is in SRAM,
1747 * and verify its contents
1750 il3945_verify_ucode(struct il_priv *il)
1757 image = (__le32 *) il->ucode_boot.v_addr;
1758 len = il->ucode_boot.len;
1759 rc = il3945_verify_inst_sparse(il, image, len);
1761 D_INFO("Bootstrap uCode is good in inst SRAM\n");
1765 /* Try initialize */
1766 image = (__le32 *) il->ucode_init.v_addr;
1767 len = il->ucode_init.len;
1768 rc = il3945_verify_inst_sparse(il, image, len);
1770 D_INFO("Initialize uCode is good in inst SRAM\n");
1774 /* Try runtime/protocol */
1775 image = (__le32 *) il->ucode_code.v_addr;
1776 len = il->ucode_code.len;
1777 rc = il3945_verify_inst_sparse(il, image, len);
1779 D_INFO("Runtime uCode is good in inst SRAM\n");
1783 IL_ERR("NO VALID UCODE IMAGE IN INSTRUCTION SRAM!!\n");
1785 /* Since nothing seems to match, show first several data entries in
1786 * instruction SRAM, so maybe visual inspection will give a clue.
1787 * Selection of bootstrap image (vs. other images) is arbitrary. */
1788 image = (__le32 *) il->ucode_boot.v_addr;
1789 len = il->ucode_boot.len;
1790 rc = il3945_verify_inst_full(il, image, len);
1796 il3945_nic_start(struct il_priv *il)
1798 /* Remove all resets to allow NIC to operate */
1799 _il_wr(il, CSR_RESET, 0);
1802 #define IL3945_UCODE_GET(item) \
1803 static u32 il3945_ucode_get_##item(const struct il_ucode_header *ucode)\
1805 return le32_to_cpu(ucode->v1.item); \
1809 il3945_ucode_get_header_size(u32 api_ver)
1815 il3945_ucode_get_data(const struct il_ucode_header *ucode)
1817 return (u8 *) ucode->v1.data;
1820 IL3945_UCODE_GET(inst_size);
1821 IL3945_UCODE_GET(data_size);
1822 IL3945_UCODE_GET(init_size);
1823 IL3945_UCODE_GET(init_data_size);
1824 IL3945_UCODE_GET(boot_size);
1827 * il3945_read_ucode - Read uCode images from disk file.
1829 * Copy into buffers for card to fetch via bus-mastering
1832 il3945_read_ucode(struct il_priv *il)
1834 const struct il_ucode_header *ucode;
1835 int ret = -EINVAL, idx;
1836 const struct firmware *ucode_raw;
1837 /* firmware file name contains uCode/driver compatibility version */
1838 const char *name_pre = il->cfg->fw_name_pre;
1839 const unsigned int api_max = il->cfg->ucode_api_max;
1840 const unsigned int api_min = il->cfg->ucode_api_min;
1844 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1846 /* Ask kernel firmware_class module to get the boot firmware off disk.
1847 * request_firmware() is synchronous, file is in memory on return. */
1848 for (idx = api_max; idx >= api_min; idx--) {
1849 sprintf(buf, "%s%u%s", name_pre, idx, ".ucode");
1850 ret = request_firmware(&ucode_raw, buf, &il->pci_dev->dev);
1852 IL_ERR("%s firmware file req failed: %d\n", buf, ret);
1859 IL_ERR("Loaded firmware %s, "
1860 "which is deprecated. "
1861 " Please use API v%u instead.\n", buf,
1863 D_INFO("Got firmware '%s' file "
1864 "(%zd bytes) from disk\n", buf, ucode_raw->size);
1872 /* Make sure that we got at least our header! */
1873 if (ucode_raw->size < il3945_ucode_get_header_size(1)) {
1874 IL_ERR("File size way too small!\n");
1879 /* Data from ucode file: header followed by uCode images */
1880 ucode = (struct il_ucode_header *)ucode_raw->data;
1882 il->ucode_ver = le32_to_cpu(ucode->ver);
1883 api_ver = IL_UCODE_API(il->ucode_ver);
1884 inst_size = il3945_ucode_get_inst_size(ucode);
1885 data_size = il3945_ucode_get_data_size(ucode);
1886 init_size = il3945_ucode_get_init_size(ucode);
1887 init_data_size = il3945_ucode_get_init_data_size(ucode);
1888 boot_size = il3945_ucode_get_boot_size(ucode);
1889 src = il3945_ucode_get_data(ucode);
1891 /* api_ver should match the api version forming part of the
1892 * firmware filename ... but we don't check for that and only rely
1893 * on the API version read from firmware header from here on forward */
1895 if (api_ver < api_min || api_ver > api_max) {
1896 IL_ERR("Driver unable to support your firmware API. "
1897 "Driver supports v%u, firmware is v%u.\n", api_max,
1903 if (api_ver != api_max)
1904 IL_ERR("Firmware has old API version. Expected %u, "
1905 "got %u. New firmware can be obtained "
1906 "from http://www.intellinuxwireless.org.\n", api_max,
1909 IL_INFO("loaded firmware version %u.%u.%u.%u\n",
1910 IL_UCODE_MAJOR(il->ucode_ver), IL_UCODE_MINOR(il->ucode_ver),
1911 IL_UCODE_API(il->ucode_ver), IL_UCODE_SERIAL(il->ucode_ver));
1913 snprintf(il->hw->wiphy->fw_version, sizeof(il->hw->wiphy->fw_version),
1914 "%u.%u.%u.%u", IL_UCODE_MAJOR(il->ucode_ver),
1915 IL_UCODE_MINOR(il->ucode_ver), IL_UCODE_API(il->ucode_ver),
1916 IL_UCODE_SERIAL(il->ucode_ver));
1918 D_INFO("f/w package hdr ucode version raw = 0x%x\n", il->ucode_ver);
1919 D_INFO("f/w package hdr runtime inst size = %u\n", inst_size);
1920 D_INFO("f/w package hdr runtime data size = %u\n", data_size);
1921 D_INFO("f/w package hdr init inst size = %u\n", init_size);
1922 D_INFO("f/w package hdr init data size = %u\n", init_data_size);
1923 D_INFO("f/w package hdr boot inst size = %u\n", boot_size);
1925 /* Verify size of file vs. image size info in file's header */
1926 if (ucode_raw->size !=
1927 il3945_ucode_get_header_size(api_ver) + inst_size + data_size +
1928 init_size + init_data_size + boot_size) {
1930 D_INFO("uCode file size %zd does not match expected size\n",
1936 /* Verify that uCode images will fit in card's SRAM */
1937 if (inst_size > IL39_MAX_INST_SIZE) {
1938 D_INFO("uCode instr len %d too large to fit in\n", inst_size);
1943 if (data_size > IL39_MAX_DATA_SIZE) {
1944 D_INFO("uCode data len %d too large to fit in\n", data_size);
1948 if (init_size > IL39_MAX_INST_SIZE) {
1949 D_INFO("uCode init instr len %d too large to fit in\n",
1954 if (init_data_size > IL39_MAX_DATA_SIZE) {
1955 D_INFO("uCode init data len %d too large to fit in\n",
1960 if (boot_size > IL39_MAX_BSM_SIZE) {
1961 D_INFO("uCode boot instr len %d too large to fit in\n",
1967 /* Allocate ucode buffers for card's bus-master loading ... */
1969 /* Runtime instructions and 2 copies of data:
1970 * 1) unmodified from disk
1971 * 2) backup cache for save/restore during power-downs */
1972 il->ucode_code.len = inst_size;
1973 il_alloc_fw_desc(il->pci_dev, &il->ucode_code);
1975 il->ucode_data.len = data_size;
1976 il_alloc_fw_desc(il->pci_dev, &il->ucode_data);
1978 il->ucode_data_backup.len = data_size;
1979 il_alloc_fw_desc(il->pci_dev, &il->ucode_data_backup);
1981 if (!il->ucode_code.v_addr || !il->ucode_data.v_addr ||
1982 !il->ucode_data_backup.v_addr)
1985 /* Initialization instructions and data */
1986 if (init_size && init_data_size) {
1987 il->ucode_init.len = init_size;
1988 il_alloc_fw_desc(il->pci_dev, &il->ucode_init);
1990 il->ucode_init_data.len = init_data_size;
1991 il_alloc_fw_desc(il->pci_dev, &il->ucode_init_data);
1993 if (!il->ucode_init.v_addr || !il->ucode_init_data.v_addr)
1997 /* Bootstrap (instructions only, no data) */
1999 il->ucode_boot.len = boot_size;
2000 il_alloc_fw_desc(il->pci_dev, &il->ucode_boot);
2002 if (!il->ucode_boot.v_addr)
2006 /* Copy images into buffers for card's bus-master reads ... */
2008 /* Runtime instructions (first block of data in file) */
2010 D_INFO("Copying (but not loading) uCode instr len %zd\n", len);
2011 memcpy(il->ucode_code.v_addr, src, len);
2014 D_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2015 il->ucode_code.v_addr, (u32) il->ucode_code.p_addr);
2017 /* Runtime data (2nd block)
2018 * NOTE: Copy into backup buffer will be done in il3945_up() */
2020 D_INFO("Copying (but not loading) uCode data len %zd\n", len);
2021 memcpy(il->ucode_data.v_addr, src, len);
2022 memcpy(il->ucode_data_backup.v_addr, src, len);
2025 /* Initialization instructions (3rd block) */
2028 D_INFO("Copying (but not loading) init instr len %zd\n", len);
2029 memcpy(il->ucode_init.v_addr, src, len);
2033 /* Initialization data (4th block) */
2034 if (init_data_size) {
2035 len = init_data_size;
2036 D_INFO("Copying (but not loading) init data len %zd\n", len);
2037 memcpy(il->ucode_init_data.v_addr, src, len);
2041 /* Bootstrap instructions (5th block) */
2043 D_INFO("Copying (but not loading) boot instr len %zd\n", len);
2044 memcpy(il->ucode_boot.v_addr, src, len);
2046 /* We have our copies now, allow OS release its copies */
2047 release_firmware(ucode_raw);
2051 IL_ERR("failed to allocate pci memory\n");
2053 il3945_dealloc_ucode_pci(il);
2056 release_firmware(ucode_raw);
2063 * il3945_set_ucode_ptrs - Set uCode address location
2065 * Tell initialization uCode where to find runtime uCode.
2067 * BSM registers initially contain pointers to initialization uCode.
2068 * We need to replace them to load runtime uCode inst and data,
2069 * and to save runtime data when powering down.
2072 il3945_set_ucode_ptrs(struct il_priv *il)
2077 /* bits 31:0 for 3945 */
2078 pinst = il->ucode_code.p_addr;
2079 pdata = il->ucode_data_backup.p_addr;
2081 /* Tell bootstrap uCode where to find image to load */
2082 il_wr_prph(il, BSM_DRAM_INST_PTR_REG, pinst);
2083 il_wr_prph(il, BSM_DRAM_DATA_PTR_REG, pdata);
2084 il_wr_prph(il, BSM_DRAM_DATA_BYTECOUNT_REG, il->ucode_data.len);
2086 /* Inst byte count must be last to set up, bit 31 signals uCode
2087 * that all new ptr/size info is in place */
2088 il_wr_prph(il, BSM_DRAM_INST_BYTECOUNT_REG,
2089 il->ucode_code.len | BSM_DRAM_INST_LOAD);
2091 D_INFO("Runtime uCode pointers are set.\n");
2097 * il3945_init_alive_start - Called after N_ALIVE notification received
2099 * Called after N_ALIVE notification received from "initialize" uCode.
2101 * Tell "initialize" uCode to go ahead and load the runtime uCode.
2104 il3945_init_alive_start(struct il_priv *il)
2106 /* Check alive response for "valid" sign from uCode */
2107 if (il->card_alive_init.is_valid != UCODE_VALID_OK) {
2108 /* We had an error bringing up the hardware, so take it
2109 * all the way back down so we can try again */
2110 D_INFO("Initialize Alive failed.\n");
2114 /* Bootstrap uCode has loaded initialize uCode ... verify inst image.
2115 * This is a paranoid check, because we would not have gotten the
2116 * "initialize" alive if code weren't properly loaded. */
2117 if (il3945_verify_ucode(il)) {
2118 /* Runtime instruction load was bad;
2119 * take it all the way back down so we can try again */
2120 D_INFO("Bad \"initialize\" uCode load.\n");
2124 /* Send pointers to protocol/runtime uCode image ... init code will
2125 * load and launch runtime uCode, which will send us another "Alive"
2127 D_INFO("Initialization Alive received.\n");
2128 if (il3945_set_ucode_ptrs(il)) {
2129 /* Runtime instruction load won't happen;
2130 * take it all the way back down so we can try again */
2131 D_INFO("Couldn't set up uCode pointers.\n");
2137 queue_work(il->workqueue, &il->restart);
2141 * il3945_alive_start - called after N_ALIVE notification received
2142 * from protocol/runtime uCode (initialization uCode's
2143 * Alive gets handled by il3945_init_alive_start()).
2146 il3945_alive_start(struct il_priv *il)
2148 int thermal_spin = 0;
2151 D_INFO("Runtime Alive received.\n");
2153 if (il->card_alive.is_valid != UCODE_VALID_OK) {
2154 /* We had an error bringing up the hardware, so take it
2155 * all the way back down so we can try again */
2156 D_INFO("Alive failed.\n");
2160 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2161 * This is a paranoid check, because we would not have gotten the
2162 * "runtime" alive if code weren't properly loaded. */
2163 if (il3945_verify_ucode(il)) {
2164 /* Runtime instruction load was bad;
2165 * take it all the way back down so we can try again */
2166 D_INFO("Bad runtime uCode load.\n");
2170 rfkill = il_rd_prph(il, APMG_RFKILL_REG);
2171 D_INFO("RFKILL status: 0x%x\n", rfkill);
2174 clear_bit(S_RF_KILL_HW, &il->status);
2175 /* if RFKILL is not on, then wait for thermal
2176 * sensor in adapter to kick in */
2177 while (il3945_hw_get_temperature(il) == 0) {
2183 D_INFO("Thermal calibration took %dus\n",
2186 set_bit(S_RF_KILL_HW, &il->status);
2188 /* After the ALIVE response, we can send commands to 3945 uCode */
2189 set_bit(S_ALIVE, &il->status);
2191 /* Enable watchdog to monitor the driver tx queues */
2192 il_setup_watchdog(il);
2194 if (il_is_rfkill(il))
2197 ieee80211_wake_queues(il->hw);
2199 il->active_rate = RATES_MASK_3945;
2201 il_power_update_mode(il, true);
2203 if (il_is_associated(il)) {
2204 struct il3945_rxon_cmd *active_rxon =
2205 (struct il3945_rxon_cmd *)(&il->active);
2207 il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2208 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2210 /* Initialize our rx_config data */
2211 il_connection_init_rx_config(il, &il->ctx);
2214 /* Configure Bluetooth device coexistence support */
2215 il_send_bt_config(il);
2217 set_bit(S_READY, &il->status);
2219 /* Configure the adapter for unassociated operation */
2220 il3945_commit_rxon(il, &il->ctx);
2222 il3945_reg_txpower_periodic(il);
2224 D_INFO("ALIVE processing complete.\n");
2225 wake_up(&il->wait_command_queue);
2230 queue_work(il->workqueue, &il->restart);
2233 static void il3945_cancel_deferred_work(struct il_priv *il);
2236 __il3945_down(struct il_priv *il)
2238 unsigned long flags;
2241 D_INFO(DRV_NAME " is going down\n");
2243 il_scan_cancel_timeout(il, 200);
2245 exit_pending = test_and_set_bit(S_EXIT_PENDING, &il->status);
2247 /* Stop TX queues watchdog. We need to have S_EXIT_PENDING bit set
2248 * to prevent rearm timer */
2249 del_timer_sync(&il->watchdog);
2251 /* Station information will now be cleared in device */
2252 il_clear_ucode_stations(il, NULL);
2253 il_dealloc_bcast_stations(il);
2254 il_clear_driver_stations(il);
2256 /* Unblock any waiting calls */
2257 wake_up_all(&il->wait_command_queue);
2259 /* Wipe out the EXIT_PENDING status bit if we are not actually
2260 * exiting the module */
2262 clear_bit(S_EXIT_PENDING, &il->status);
2264 /* stop and reset the on-board processor */
2265 _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2267 /* tell the device to stop sending interrupts */
2268 spin_lock_irqsave(&il->lock, flags);
2269 il_disable_interrupts(il);
2270 spin_unlock_irqrestore(&il->lock, flags);
2271 il3945_synchronize_irq(il);
2273 if (il->mac80211_registered)
2274 ieee80211_stop_queues(il->hw);
2276 /* If we have not previously called il3945_init() then
2277 * clear all bits but the RF Kill bits and return */
2278 if (!il_is_init(il)) {
2280 test_bit(S_RF_KILL_HW,
2282 status) << S_RF_KILL_HW |
2283 test_bit(S_GEO_CONFIGURED,
2285 status) << S_GEO_CONFIGURED |
2286 test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING;
2290 /* ...otherwise clear out all the status bits but the RF Kill
2291 * bit and continue taking the NIC down. */
2293 test_bit(S_RF_KILL_HW,
2294 &il->status) << S_RF_KILL_HW | test_bit(S_GEO_CONFIGURED,
2297 S_GEO_CONFIGURED | test_bit(S_FW_ERROR,
2299 status) << S_FW_ERROR |
2300 test_bit(S_EXIT_PENDING, &il->status) << S_EXIT_PENDING;
2302 il3945_hw_txq_ctx_stop(il);
2303 il3945_hw_rxq_stop(il);
2305 /* Power-down device's busmaster DMA clocks */
2306 il_wr_prph(il, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2309 /* Stop the device, and put it in low power state */
2313 memset(&il->card_alive, 0, sizeof(struct il_alive_resp));
2316 dev_kfree_skb(il->beacon_skb);
2317 il->beacon_skb = NULL;
2319 /* clear out any free frames */
2320 il3945_clear_free_frames(il);
2324 il3945_down(struct il_priv *il)
2326 mutex_lock(&il->mutex);
2328 mutex_unlock(&il->mutex);
2330 il3945_cancel_deferred_work(il);
2333 #define MAX_HW_RESTARTS 5
2336 il3945_alloc_bcast_station(struct il_priv *il)
2338 struct il_rxon_context *ctx = &il->ctx;
2339 unsigned long flags;
2342 spin_lock_irqsave(&il->sta_lock, flags);
2343 sta_id = il_prep_station(il, ctx, il_bcast_addr, false, NULL);
2344 if (sta_id == IL_INVALID_STATION) {
2345 IL_ERR("Unable to prepare broadcast station\n");
2346 spin_unlock_irqrestore(&il->sta_lock, flags);
2351 il->stations[sta_id].used |= IL_STA_DRIVER_ACTIVE;
2352 il->stations[sta_id].used |= IL_STA_BCAST;
2353 spin_unlock_irqrestore(&il->sta_lock, flags);
2359 __il3945_up(struct il_priv *il)
2363 rc = il3945_alloc_bcast_station(il);
2367 if (test_bit(S_EXIT_PENDING, &il->status)) {
2368 IL_WARN("Exit pending; will not bring the NIC up\n");
2372 if (!il->ucode_data_backup.v_addr || !il->ucode_data.v_addr) {
2373 IL_ERR("ucode not available for device bring up\n");
2377 /* If platform's RF_KILL switch is NOT set to KILL */
2378 if (_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2379 clear_bit(S_RF_KILL_HW, &il->status);
2381 set_bit(S_RF_KILL_HW, &il->status);
2382 IL_WARN("Radio disabled by HW RF Kill switch\n");
2386 _il_wr(il, CSR_INT, 0xFFFFFFFF);
2388 rc = il3945_hw_nic_init(il);
2390 IL_ERR("Unable to int nic\n");
2394 /* make sure rfkill handshake bits are cleared */
2395 _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2396 _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2398 /* clear (again), then enable host interrupts */
2399 _il_wr(il, CSR_INT, 0xFFFFFFFF);
2400 il_enable_interrupts(il);
2402 /* really make sure rfkill handshake bits are cleared */
2403 _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2404 _il_wr(il, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2406 /* Copy original ucode data image from disk into backup cache.
2407 * This will be used to initialize the on-board processor's
2408 * data SRAM for a clean start when the runtime program first loads. */
2409 memcpy(il->ucode_data_backup.v_addr, il->ucode_data.v_addr,
2410 il->ucode_data.len);
2412 /* We return success when we resume from suspend and rf_kill is on. */
2413 if (test_bit(S_RF_KILL_HW, &il->status))
2416 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2418 /* load bootstrap state machine,
2419 * load bootstrap program into processor's memory,
2420 * prepare to load the "initialize" uCode */
2421 rc = il->cfg->ops->lib->load_ucode(il);
2424 IL_ERR("Unable to set up bootstrap uCode: %d\n", rc);
2428 /* start card; "initialize" will load runtime ucode */
2429 il3945_nic_start(il);
2431 D_INFO(DRV_NAME " is coming up\n");
2436 set_bit(S_EXIT_PENDING, &il->status);
2438 clear_bit(S_EXIT_PENDING, &il->status);
2440 /* tried to restart and config the device for as long as our
2441 * patience could withstand */
2442 IL_ERR("Unable to initialize device after %d attempts.\n", i);
2446 /*****************************************************************************
2448 * Workqueue callbacks
2450 *****************************************************************************/
2453 il3945_bg_init_alive_start(struct work_struct *data)
2455 struct il_priv *il =
2456 container_of(data, struct il_priv, init_alive_start.work);
2458 mutex_lock(&il->mutex);
2459 if (test_bit(S_EXIT_PENDING, &il->status))
2462 il3945_init_alive_start(il);
2464 mutex_unlock(&il->mutex);
2468 il3945_bg_alive_start(struct work_struct *data)
2470 struct il_priv *il =
2471 container_of(data, struct il_priv, alive_start.work);
2473 mutex_lock(&il->mutex);
2474 if (test_bit(S_EXIT_PENDING, &il->status))
2477 il3945_alive_start(il);
2479 mutex_unlock(&il->mutex);
2483 * 3945 cannot interrupt driver when hardware rf kill switch toggles;
2484 * driver must poll CSR_GP_CNTRL_REG register for change. This register
2485 * *is* readable even when device has been SW_RESET into low power mode
2486 * (e.g. during RF KILL).
2489 il3945_rfkill_poll(struct work_struct *data)
2491 struct il_priv *il =
2492 container_of(data, struct il_priv, _3945.rfkill_poll.work);
2493 bool old_rfkill = test_bit(S_RF_KILL_HW, &il->status);
2495 !(_il_rd(il, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW);
2497 if (new_rfkill != old_rfkill) {
2499 set_bit(S_RF_KILL_HW, &il->status);
2501 clear_bit(S_RF_KILL_HW, &il->status);
2503 wiphy_rfkill_set_hw_state(il->hw->wiphy, new_rfkill);
2505 D_RF_KILL("RF_KILL bit toggled to %s.\n",
2506 new_rfkill ? "disable radio" : "enable radio");
2509 /* Keep this running, even if radio now enabled. This will be
2510 * cancelled in mac_start() if system decides to start again */
2511 queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll,
2512 round_jiffies_relative(2 * HZ));
2517 il3945_request_scan(struct il_priv *il, struct ieee80211_vif *vif)
2519 struct il_host_cmd cmd = {
2521 .len = sizeof(struct il3945_scan_cmd),
2522 .flags = CMD_SIZE_HUGE,
2524 struct il3945_scan_cmd *scan;
2526 enum ieee80211_band band;
2527 bool is_active = false;
2531 lockdep_assert_held(&il->mutex);
2533 if (!il->scan_cmd) {
2535 kmalloc(sizeof(struct il3945_scan_cmd) + IL_MAX_SCAN_SIZE,
2537 if (!il->scan_cmd) {
2538 D_SCAN("Fail to allocate scan memory\n");
2542 scan = il->scan_cmd;
2543 memset(scan, 0, sizeof(struct il3945_scan_cmd) + IL_MAX_SCAN_SIZE);
2545 scan->quiet_plcp_th = IL_PLCP_QUIET_THRESH;
2546 scan->quiet_time = IL_ACTIVE_QUIET_TIME;
2548 if (il_is_associated(il)) {
2551 u32 suspend_time = 100;
2552 u32 scan_suspend_time = 100;
2554 D_INFO("Scanning while associated...\n");
2556 interval = vif->bss_conf.beacon_int;
2558 scan->suspend_time = 0;
2559 scan->max_out_time = cpu_to_le32(200 * 1024);
2561 interval = suspend_time;
2563 * suspend time format:
2564 * 0-19: beacon interval in usec (time before exec.)
2566 * 24-31: number of beacons (suspend between channels)
2569 extra = (suspend_time / interval) << 24;
2571 0xFF0FFFFF & (extra | ((suspend_time % interval) * 1024));
2573 scan->suspend_time = cpu_to_le32(scan_suspend_time);
2574 D_SCAN("suspend_time 0x%X beacon interval %d\n",
2575 scan_suspend_time, interval);
2578 if (il->scan_request->n_ssids) {
2580 D_SCAN("Kicking off active scan\n");
2581 for (i = 0; i < il->scan_request->n_ssids; i++) {
2582 /* always does wildcard anyway */
2583 if (!il->scan_request->ssids[i].ssid_len)
2585 scan->direct_scan[p].id = WLAN_EID_SSID;
2586 scan->direct_scan[p].len =
2587 il->scan_request->ssids[i].ssid_len;
2588 memcpy(scan->direct_scan[p].ssid,
2589 il->scan_request->ssids[i].ssid,
2590 il->scan_request->ssids[i].ssid_len);
2596 D_SCAN("Kicking off passive scan.\n");
2598 /* We don't build a direct scan probe request; the uCode will do
2599 * that based on the direct_mask added to each channel entry */
2600 scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
2601 scan->tx_cmd.sta_id = il->ctx.bcast_sta_id;
2602 scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
2604 /* flags + rate selection */
2606 switch (il->scan_band) {
2607 case IEEE80211_BAND_2GHZ:
2608 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
2609 scan->tx_cmd.rate = RATE_1M_PLCP;
2610 band = IEEE80211_BAND_2GHZ;
2612 case IEEE80211_BAND_5GHZ:
2613 scan->tx_cmd.rate = RATE_6M_PLCP;
2614 band = IEEE80211_BAND_5GHZ;
2617 IL_WARN("Invalid scan band\n");
2622 * If active scaning is requested but a certain channel is marked
2623 * passive, we can do active scanning if we detect transmissions. For
2624 * passive only scanning disable switching to active on any channel.
2627 is_active ? IL_GOOD_CRC_TH_DEFAULT : IL_GOOD_CRC_TH_NEVER;
2630 il_fill_probe_req(il, (struct ieee80211_mgmt *)scan->data,
2631 vif->addr, il->scan_request->ie,
2632 il->scan_request->ie_len,
2633 IL_MAX_SCAN_SIZE - sizeof(*scan));
2634 scan->tx_cmd.len = cpu_to_le16(len);
2636 /* select Rx antennas */
2637 scan->flags |= il3945_get_antenna_flags(il);
2639 scan->channel_count =
2640 il3945_get_channels_for_scan(il, band, is_active, n_probes,
2641 (void *)&scan->data[len], vif);
2642 if (scan->channel_count == 0) {
2643 D_SCAN("channel count %d\n", scan->channel_count);
2648 le16_to_cpu(scan->tx_cmd.len) +
2649 scan->channel_count * sizeof(struct il3945_scan_channel);
2651 scan->len = cpu_to_le16(cmd.len);
2653 set_bit(S_SCAN_HW, &il->status);
2654 ret = il_send_cmd_sync(il, &cmd);
2656 clear_bit(S_SCAN_HW, &il->status);
2661 il3945_post_scan(struct il_priv *il)
2663 struct il_rxon_context *ctx = &il->ctx;
2666 * Since setting the RXON may have been deferred while
2667 * performing the scan, fire one off if needed
2669 if (memcmp(&il->staging, &il->active, sizeof(il->staging)))
2670 il3945_commit_rxon(il, ctx);
2674 il3945_bg_restart(struct work_struct *data)
2676 struct il_priv *il = container_of(data, struct il_priv, restart);
2678 if (test_bit(S_EXIT_PENDING, &il->status))
2681 if (test_and_clear_bit(S_FW_ERROR, &il->status)) {
2682 mutex_lock(&il->mutex);
2685 mutex_unlock(&il->mutex);
2687 ieee80211_restart_hw(il->hw);
2691 mutex_lock(&il->mutex);
2692 if (test_bit(S_EXIT_PENDING, &il->status)) {
2693 mutex_unlock(&il->mutex);
2698 mutex_unlock(&il->mutex);
2703 il3945_bg_rx_replenish(struct work_struct *data)
2705 struct il_priv *il = container_of(data, struct il_priv, rx_replenish);
2707 mutex_lock(&il->mutex);
2708 if (test_bit(S_EXIT_PENDING, &il->status))
2711 il3945_rx_replenish(il);
2713 mutex_unlock(&il->mutex);
2717 il3945_post_associate(struct il_priv *il)
2720 struct ieee80211_conf *conf = NULL;
2721 struct il_rxon_context *ctx = &il->ctx;
2723 if (!ctx->vif || !il->is_open)
2726 D_ASSOC("Associated as %d to: %pM\n", ctx->vif->bss_conf.aid,
2727 il->active.bssid_addr);
2729 if (test_bit(S_EXIT_PENDING, &il->status))
2732 il_scan_cancel_timeout(il, 200);
2734 conf = &il->hw->conf;
2736 il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2737 il3945_commit_rxon(il, ctx);
2739 rc = il_send_rxon_timing(il, ctx);
2741 IL_WARN("C_RXON_TIMING failed - " "Attempting to continue.\n");
2743 il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2745 il->staging.assoc_id = cpu_to_le16(ctx->vif->bss_conf.aid);
2747 D_ASSOC("assoc id %d beacon interval %d\n", ctx->vif->bss_conf.aid,
2748 ctx->vif->bss_conf.beacon_int);
2750 if (ctx->vif->bss_conf.use_short_preamble)
2751 il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2753 il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2755 if (il->staging.flags & RXON_FLG_BAND_24G_MSK) {
2756 if (ctx->vif->bss_conf.use_short_slot)
2757 il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
2759 il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2762 il3945_commit_rxon(il, ctx);
2764 switch (ctx->vif->type) {
2765 case NL80211_IFTYPE_STATION:
2766 il3945_rate_scale_init(il->hw, IL_AP_ID);
2768 case NL80211_IFTYPE_ADHOC:
2769 il3945_send_beacon_cmd(il);
2772 IL_ERR("%s Should not be called in %d mode\n", __func__,
2778 /*****************************************************************************
2780 * mac80211 entry point functions
2782 *****************************************************************************/
2784 #define UCODE_READY_TIMEOUT (2 * HZ)
2787 il3945_mac_start(struct ieee80211_hw *hw)
2789 struct il_priv *il = hw->priv;
2792 D_MAC80211("enter\n");
2794 /* we should be verifying the device is ready to be opened */
2795 mutex_lock(&il->mutex);
2797 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2798 * ucode filename and max sizes are card-specific. */
2800 if (!il->ucode_code.len) {
2801 ret = il3945_read_ucode(il);
2803 IL_ERR("Could not read microcode: %d\n", ret);
2804 mutex_unlock(&il->mutex);
2805 goto out_release_irq;
2809 ret = __il3945_up(il);
2811 mutex_unlock(&il->mutex);
2814 goto out_release_irq;
2816 D_INFO("Start UP work.\n");
2818 /* Wait for START_ALIVE from ucode. Otherwise callbacks from
2819 * mac80211 will not be run successfully. */
2820 ret = wait_event_timeout(il->wait_command_queue,
2821 test_bit(S_READY, &il->status),
2822 UCODE_READY_TIMEOUT);
2824 if (!test_bit(S_READY, &il->status)) {
2825 IL_ERR("Wait for START_ALIVE timeout after %dms.\n",
2826 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2828 goto out_release_irq;
2832 /* ucode is running and will send rfkill notifications,
2833 * no need to poll the killswitch state anymore */
2834 cancel_delayed_work(&il->_3945.rfkill_poll);
2837 D_MAC80211("leave\n");
2842 D_MAC80211("leave - failed\n");
2847 il3945_mac_stop(struct ieee80211_hw *hw)
2849 struct il_priv *il = hw->priv;
2851 D_MAC80211("enter\n");
2854 D_MAC80211("leave - skip\n");
2862 flush_workqueue(il->workqueue);
2864 /* start polling the killswitch state again */
2865 queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll,
2866 round_jiffies_relative(2 * HZ));
2868 D_MAC80211("leave\n");
2872 il3945_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2874 struct il_priv *il = hw->priv;
2876 D_MAC80211("enter\n");
2878 D_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2879 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2881 if (il3945_tx_skb(il, skb))
2882 dev_kfree_skb_any(skb);
2884 D_MAC80211("leave\n");
2888 il3945_config_ap(struct il_priv *il)
2890 struct il_rxon_context *ctx = &il->ctx;
2891 struct ieee80211_vif *vif = ctx->vif;
2894 if (test_bit(S_EXIT_PENDING, &il->status))
2897 /* The following should be done only at AP bring up */
2898 if (!(il_is_associated(il))) {
2900 /* RXON - unassoc (to set timing command) */
2901 il->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2902 il3945_commit_rxon(il, ctx);
2905 rc = il_send_rxon_timing(il, ctx);
2907 IL_WARN("C_RXON_TIMING failed - "
2908 "Attempting to continue.\n");
2910 il->staging.assoc_id = 0;
2912 if (vif->bss_conf.use_short_preamble)
2913 il->staging.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2915 il->staging.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2917 if (il->staging.flags & RXON_FLG_BAND_24G_MSK) {
2918 if (vif->bss_conf.use_short_slot)
2919 il->staging.flags |= RXON_FLG_SHORT_SLOT_MSK;
2921 il->staging.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2923 /* restore RXON assoc */
2924 il->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2925 il3945_commit_rxon(il, ctx);
2927 il3945_send_beacon_cmd(il);
2931 il3945_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2932 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2933 struct ieee80211_key_conf *key)
2935 struct il_priv *il = hw->priv;
2937 u8 sta_id = IL_INVALID_STATION;
2940 D_MAC80211("enter\n");
2942 if (il3945_mod_params.sw_crypto) {
2943 D_MAC80211("leave - hwcrypto disabled\n");
2948 * To support IBSS RSN, don't program group keys in IBSS, the
2949 * hardware will then not attempt to decrypt the frames.
2951 if (vif->type == NL80211_IFTYPE_ADHOC &&
2952 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
2955 static_key = !il_is_associated(il);
2958 sta_id = il_sta_id_or_broadcast(il, &il->ctx, sta);
2959 if (sta_id == IL_INVALID_STATION)
2963 mutex_lock(&il->mutex);
2964 il_scan_cancel_timeout(il, 100);
2969 ret = il3945_set_static_key(il, key);
2971 ret = il3945_set_dynamic_key(il, key, sta_id);
2972 D_MAC80211("enable hwcrypto key\n");
2976 ret = il3945_remove_static_key(il);
2978 ret = il3945_clear_sta_key_info(il, sta_id);
2979 D_MAC80211("disable hwcrypto key\n");
2985 mutex_unlock(&il->mutex);
2986 D_MAC80211("leave\n");
2992 il3945_mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2993 struct ieee80211_sta *sta)
2995 struct il_priv *il = hw->priv;
2996 struct il3945_sta_priv *sta_priv = (void *)sta->drv_priv;
2998 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3001 D_INFO("received request to add station %pM\n", sta->addr);
3002 mutex_lock(&il->mutex);
3003 D_INFO("proceeding to add station %pM\n", sta->addr);
3004 sta_priv->common.sta_id = IL_INVALID_STATION;
3007 il_add_station_common(il, &il->ctx, sta->addr, is_ap, sta, &sta_id);
3009 IL_ERR("Unable to add station %pM (%d)\n", sta->addr, ret);
3010 /* Should we return success if return code is EEXIST ? */
3011 mutex_unlock(&il->mutex);
3015 sta_priv->common.sta_id = sta_id;
3017 /* Initialize rate scaling */
3018 D_INFO("Initializing rate scaling for station %pM\n", sta->addr);
3019 il3945_rs_rate_init(il, sta, sta_id);
3020 mutex_unlock(&il->mutex);
3026 il3945_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
3027 unsigned int *total_flags, u64 multicast)
3029 struct il_priv *il = hw->priv;
3030 __le32 filter_or = 0, filter_nand = 0;
3032 #define CHK(test, flag) do { \
3033 if (*total_flags & (test)) \
3034 filter_or |= (flag); \
3036 filter_nand |= (flag); \
3039 D_MAC80211("Enter: changed: 0x%x, total: 0x%x\n", changed_flags,
3042 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3043 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK);
3044 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3048 mutex_lock(&il->mutex);
3050 il->staging.filter_flags &= ~filter_nand;
3051 il->staging.filter_flags |= filter_or;
3054 * Not committing directly because hardware can perform a scan,
3055 * but even if hw is ready, committing here breaks for some reason,
3056 * we'll eventually commit the filter flags change anyway.
3059 mutex_unlock(&il->mutex);
3062 * Receiving all multicast frames is always enabled by the
3063 * default flags setup in il_connection_init_rx_config()
3064 * since we currently do not support programming multicast
3065 * filters into the device.
3068 FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3069 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3072 /*****************************************************************************
3076 *****************************************************************************/
3078 #ifdef CONFIG_IWLEGACY_DEBUG
3081 * The following adds a new attribute to the sysfs representation
3082 * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3083 * used for controlling the debug level.
3085 * See the level definitions in iwl for details.
3087 * The debug_level being managed using sysfs below is a per device debug
3088 * level that is used instead of the global debug level if it (the per
3089 * device debug level) is set.
3092 il3945_show_debug_level(struct device *d, struct device_attribute *attr,
3095 struct il_priv *il = dev_get_drvdata(d);
3096 return sprintf(buf, "0x%08X\n", il_get_debug_level(il));
3100 il3945_store_debug_level(struct device *d, struct device_attribute *attr,
3101 const char *buf, size_t count)
3103 struct il_priv *il = dev_get_drvdata(d);
3107 ret = strict_strtoul(buf, 0, &val);
3109 IL_INFO("%s is not in hex or decimal form.\n", buf);
3111 il->debug_level = val;
3112 if (il_alloc_traffic_mem(il))
3113 IL_ERR("Not enough memory to generate traffic log\n");
3115 return strnlen(buf, count);
3118 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO, il3945_show_debug_level,
3119 il3945_store_debug_level);
3121 #endif /* CONFIG_IWLEGACY_DEBUG */
3124 il3945_show_temperature(struct device *d, struct device_attribute *attr,
3127 struct il_priv *il = dev_get_drvdata(d);
3129 if (!il_is_alive(il))
3132 return sprintf(buf, "%d\n", il3945_hw_get_temperature(il));
3135 static DEVICE_ATTR(temperature, S_IRUGO, il3945_show_temperature, NULL);
3138 il3945_show_tx_power(struct device *d, struct device_attribute *attr, char *buf)
3140 struct il_priv *il = dev_get_drvdata(d);
3141 return sprintf(buf, "%d\n", il->tx_power_user_lmt);
3145 il3945_store_tx_power(struct device *d, struct device_attribute *attr,
3146 const char *buf, size_t count)
3148 struct il_priv *il = dev_get_drvdata(d);
3149 char *p = (char *)buf;
3152 val = simple_strtoul(p, &p, 10);
3154 IL_INFO(": %s is not in decimal form.\n", buf);
3156 il3945_hw_reg_set_txpower(il, val);
3161 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, il3945_show_tx_power,
3162 il3945_store_tx_power);
3165 il3945_show_flags(struct device *d, struct device_attribute *attr, char *buf)
3167 struct il_priv *il = dev_get_drvdata(d);
3169 return sprintf(buf, "0x%04X\n", il->active.flags);
3173 il3945_store_flags(struct device *d, struct device_attribute *attr,
3174 const char *buf, size_t count)
3176 struct il_priv *il = dev_get_drvdata(d);
3177 u32 flags = simple_strtoul(buf, NULL, 0);
3179 mutex_lock(&il->mutex);
3180 if (le32_to_cpu(il->staging.flags) != flags) {
3181 /* Cancel any currently running scans... */
3182 if (il_scan_cancel_timeout(il, 100))
3183 IL_WARN("Could not cancel scan.\n");
3185 D_INFO("Committing rxon.flags = 0x%04X\n", flags);
3186 il->staging.flags = cpu_to_le32(flags);
3187 il3945_commit_rxon(il, &il->ctx);
3190 mutex_unlock(&il->mutex);
3195 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, il3945_show_flags,
3196 il3945_store_flags);
3199 il3945_show_filter_flags(struct device *d, struct device_attribute *attr,
3202 struct il_priv *il = dev_get_drvdata(d);
3204 return sprintf(buf, "0x%04X\n", le32_to_cpu(il->active.filter_flags));
3208 il3945_store_filter_flags(struct device *d, struct device_attribute *attr,
3209 const char *buf, size_t count)
3211 struct il_priv *il = dev_get_drvdata(d);
3212 u32 filter_flags = simple_strtoul(buf, NULL, 0);
3214 mutex_lock(&il->mutex);
3215 if (le32_to_cpu(il->staging.filter_flags) != filter_flags) {
3216 /* Cancel any currently running scans... */
3217 if (il_scan_cancel_timeout(il, 100))
3218 IL_WARN("Could not cancel scan.\n");
3220 D_INFO("Committing rxon.filter_flags = " "0x%04X\n",
3222 il->staging.filter_flags = cpu_to_le32(filter_flags);
3223 il3945_commit_rxon(il, &il->ctx);
3226 mutex_unlock(&il->mutex);
3231 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, il3945_show_filter_flags,
3232 il3945_store_filter_flags);
3235 il3945_show_measurement(struct device *d, struct device_attribute *attr,
3238 struct il_priv *il = dev_get_drvdata(d);
3239 struct il_spectrum_notification measure_report;
3240 u32 size = sizeof(measure_report), len = 0, ofs = 0;
3241 u8 *data = (u8 *) &measure_report;
3242 unsigned long flags;
3244 spin_lock_irqsave(&il->lock, flags);
3245 if (!(il->measurement_status & MEASUREMENT_READY)) {
3246 spin_unlock_irqrestore(&il->lock, flags);
3249 memcpy(&measure_report, &il->measure_report, size);
3250 il->measurement_status = 0;
3251 spin_unlock_irqrestore(&il->lock, flags);
3253 while (size && PAGE_SIZE - len) {
3254 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3255 PAGE_SIZE - len, 1);
3257 if (PAGE_SIZE - len)
3261 size -= min(size, 16U);
3268 il3945_store_measurement(struct device *d, struct device_attribute *attr,
3269 const char *buf, size_t count)
3271 struct il_priv *il = dev_get_drvdata(d);
3272 struct ieee80211_measurement_params params = {
3273 .channel = le16_to_cpu(il->active.channel),
3274 .start_time = cpu_to_le64(il->_3945.last_tsf),
3275 .duration = cpu_to_le16(1),
3277 u8 type = IL_MEASURE_BASIC;
3283 strncpy(buffer, buf, min(sizeof(buffer), count));
3284 channel = simple_strtoul(p, NULL, 0);
3286 params.channel = channel;
3289 while (*p && *p != ' ')
3292 type = simple_strtoul(p + 1, NULL, 0);
3295 D_INFO("Invoking measurement of type %d on " "channel %d (for '%s')\n",
3296 type, params.channel, buf);
3297 il3945_get_measurement(il, ¶ms, type);
3302 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR, il3945_show_measurement,
3303 il3945_store_measurement);
3306 il3945_store_retry_rate(struct device *d, struct device_attribute *attr,
3307 const char *buf, size_t count)
3309 struct il_priv *il = dev_get_drvdata(d);
3311 il->retry_rate = simple_strtoul(buf, NULL, 0);
3312 if (il->retry_rate <= 0)
3319 il3945_show_retry_rate(struct device *d, struct device_attribute *attr,
3322 struct il_priv *il = dev_get_drvdata(d);
3323 return sprintf(buf, "%d", il->retry_rate);
3326 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, il3945_show_retry_rate,
3327 il3945_store_retry_rate);
3330 il3945_show_channels(struct device *d, struct device_attribute *attr, char *buf)
3332 /* all this shit doesn't belong into sysfs anyway */
3336 static DEVICE_ATTR(channels, S_IRUSR, il3945_show_channels, NULL);
3339 il3945_show_antenna(struct device *d, struct device_attribute *attr, char *buf)
3341 struct il_priv *il = dev_get_drvdata(d);
3343 if (!il_is_alive(il))
3346 return sprintf(buf, "%d\n", il3945_mod_params.antenna);
3350 il3945_store_antenna(struct device *d, struct device_attribute *attr,
3351 const char *buf, size_t count)
3353 struct il_priv *il __maybe_unused = dev_get_drvdata(d);
3359 if (sscanf(buf, "%1i", &ant) != 1) {
3360 D_INFO("not in hex or decimal form.\n");
3364 if (ant >= 0 && ant <= 2) {
3365 D_INFO("Setting antenna select to %d.\n", ant);
3366 il3945_mod_params.antenna = (enum il3945_antenna)ant;
3368 D_INFO("Bad antenna select value %d.\n", ant);
3373 static DEVICE_ATTR(antenna, S_IWUSR | S_IRUGO, il3945_show_antenna,
3374 il3945_store_antenna);
3377 il3945_show_status(struct device *d, struct device_attribute *attr, char *buf)
3379 struct il_priv *il = dev_get_drvdata(d);
3380 if (!il_is_alive(il))
3382 return sprintf(buf, "0x%08x\n", (int)il->status);
3385 static DEVICE_ATTR(status, S_IRUGO, il3945_show_status, NULL);
3388 il3945_dump_error_log(struct device *d, struct device_attribute *attr,
3389 const char *buf, size_t count)
3391 struct il_priv *il = dev_get_drvdata(d);
3392 char *p = (char *)buf;
3395 il3945_dump_nic_error_log(il);
3397 return strnlen(buf, count);
3400 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, il3945_dump_error_log);
3402 /*****************************************************************************
3404 * driver setup and tear down
3406 *****************************************************************************/
3409 il3945_setup_deferred_work(struct il_priv *il)
3411 il->workqueue = create_singlethread_workqueue(DRV_NAME);
3413 init_waitqueue_head(&il->wait_command_queue);
3415 INIT_WORK(&il->restart, il3945_bg_restart);
3416 INIT_WORK(&il->rx_replenish, il3945_bg_rx_replenish);
3417 INIT_DELAYED_WORK(&il->init_alive_start, il3945_bg_init_alive_start);
3418 INIT_DELAYED_WORK(&il->alive_start, il3945_bg_alive_start);
3419 INIT_DELAYED_WORK(&il->_3945.rfkill_poll, il3945_rfkill_poll);
3421 il_setup_scan_deferred_work(il);
3423 il3945_hw_setup_deferred_work(il);
3425 init_timer(&il->watchdog);
3426 il->watchdog.data = (unsigned long)il;
3427 il->watchdog.function = il_bg_watchdog;
3429 tasklet_init(&il->irq_tasklet,
3430 (void (*)(unsigned long))il3945_irq_tasklet,
3435 il3945_cancel_deferred_work(struct il_priv *il)
3437 il3945_hw_cancel_deferred_work(il);
3439 cancel_delayed_work_sync(&il->init_alive_start);
3440 cancel_delayed_work(&il->alive_start);
3442 il_cancel_scan_deferred_work(il);
3445 static struct attribute *il3945_sysfs_entries[] = {
3446 &dev_attr_antenna.attr,
3447 &dev_attr_channels.attr,
3448 &dev_attr_dump_errors.attr,
3449 &dev_attr_flags.attr,
3450 &dev_attr_filter_flags.attr,
3451 &dev_attr_measurement.attr,
3452 &dev_attr_retry_rate.attr,
3453 &dev_attr_status.attr,
3454 &dev_attr_temperature.attr,
3455 &dev_attr_tx_power.attr,
3456 #ifdef CONFIG_IWLEGACY_DEBUG
3457 &dev_attr_debug_level.attr,
3462 static struct attribute_group il3945_attribute_group = {
3463 .name = NULL, /* put in device directory */
3464 .attrs = il3945_sysfs_entries,
3467 struct ieee80211_ops il3945_hw_ops = {
3468 .tx = il3945_mac_tx,
3469 .start = il3945_mac_start,
3470 .stop = il3945_mac_stop,
3471 .add_interface = il_mac_add_interface,
3472 .remove_interface = il_mac_remove_interface,
3473 .change_interface = il_mac_change_interface,
3474 .config = il_mac_config,
3475 .configure_filter = il3945_configure_filter,
3476 .set_key = il3945_mac_set_key,
3477 .conf_tx = il_mac_conf_tx,
3478 .reset_tsf = il_mac_reset_tsf,
3479 .bss_info_changed = il_mac_bss_info_changed,
3480 .hw_scan = il_mac_hw_scan,
3481 .sta_add = il3945_mac_sta_add,
3482 .sta_remove = il_mac_sta_remove,
3483 .tx_last_beacon = il_mac_tx_last_beacon,
3487 il3945_init_drv(struct il_priv *il)
3490 struct il3945_eeprom *eeprom = (struct il3945_eeprom *)il->eeprom;
3493 il->beacon_skb = NULL;
3495 spin_lock_init(&il->sta_lock);
3496 spin_lock_init(&il->hcmd_lock);
3498 INIT_LIST_HEAD(&il->free_frames);
3500 mutex_init(&il->mutex);
3502 il->ieee_channels = NULL;
3503 il->ieee_rates = NULL;
3504 il->band = IEEE80211_BAND_2GHZ;
3506 il->iw_mode = NL80211_IFTYPE_STATION;
3507 il->missed_beacon_threshold = IL_MISSED_BEACON_THRESHOLD_DEF;
3509 /* initialize force reset */
3510 il->force_reset.reset_duration = IL_DELAY_NEXT_FORCE_FW_RELOAD;
3512 if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
3513 IL_WARN("Unsupported EEPROM version: 0x%04X\n",
3518 ret = il_init_channel_map(il);
3520 IL_ERR("initializing regulatory failed: %d\n", ret);
3524 /* Set up txpower settings in driver for all channels */
3525 if (il3945_txpower_set_from_eeprom(il)) {
3527 goto err_free_channel_map;
3530 ret = il_init_geos(il);
3532 IL_ERR("initializing geos failed: %d\n", ret);
3533 goto err_free_channel_map;
3535 il3945_init_hw_rates(il, il->ieee_rates);
3539 err_free_channel_map:
3540 il_free_channel_map(il);
3545 #define IL3945_MAX_PROBE_REQUEST 200
3548 il3945_setup_mac(struct il_priv *il)
3551 struct ieee80211_hw *hw = il->hw;
3553 hw->rate_control_algorithm = "iwl-3945-rs";
3554 hw->sta_data_size = sizeof(struct il3945_sta_priv);
3555 hw->vif_data_size = sizeof(struct il_vif_priv);
3557 /* Tell mac80211 our characteristics */
3558 hw->flags = IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_SPECTRUM_MGMT;
3560 hw->wiphy->interface_modes = il->ctx.interface_modes;
3563 WIPHY_FLAG_CUSTOM_REGULATORY | WIPHY_FLAG_DISABLE_BEACON_HINTS |
3564 WIPHY_FLAG_IBSS_RSN;
3566 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX_3945;
3567 /* we create the 802.11 header and a zero-length SSID element */
3568 hw->wiphy->max_scan_ie_len = IL3945_MAX_PROBE_REQUEST - 24 - 2;
3570 /* Default value; 4 EDCA QOS priorities */
3573 if (il->bands[IEEE80211_BAND_2GHZ].n_channels)
3574 il->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3575 &il->bands[IEEE80211_BAND_2GHZ];
3577 if (il->bands[IEEE80211_BAND_5GHZ].n_channels)
3578 il->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3579 &il->bands[IEEE80211_BAND_5GHZ];
3583 ret = ieee80211_register_hw(il->hw);
3585 IL_ERR("Failed to register hw (error %d)\n", ret);
3588 il->mac80211_registered = 1;
3594 il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3598 struct ieee80211_hw *hw;
3599 struct il_cfg *cfg = (struct il_cfg *)(ent->driver_data);
3600 struct il3945_eeprom *eeprom;
3601 unsigned long flags;
3603 /***********************
3604 * 1. Allocating HW data
3605 * ********************/
3607 /* mac80211 allocates memory for this device instance, including
3608 * space for this driver's ilate structure */
3609 hw = il_alloc_all(cfg);
3611 pr_err("Can not allocate network device\n");
3616 SET_IEEE80211_DEV(hw, &pdev->dev);
3618 il->cmd_queue = IL39_CMD_QUEUE_NUM;
3622 il->ctx.rxon_assoc_cmd = C_RXON_ASSOC;
3623 il->ctx.qos_cmd = C_QOS_PARAM;
3624 il->ctx.ap_sta_id = IL_AP_ID;
3625 il->ctx.wep_key_cmd = C_WEPKEY;
3626 il->ctx.interface_modes =
3627 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
3628 il->ctx.ibss_devtype = RXON_DEV_TYPE_IBSS;
3629 il->ctx.station_devtype = RXON_DEV_TYPE_ESS;
3630 il->ctx.unused_devtype = RXON_DEV_TYPE_ESS;
3633 * Disabling hardware scan means that mac80211 will perform scans
3634 * "the hard way", rather than using device's scan.
3636 if (il3945_mod_params.disable_hw_scan) {
3637 D_INFO("Disabling hw_scan\n");
3638 il3945_hw_ops.hw_scan = NULL;
3641 D_INFO("*** LOAD DRIVER ***\n");
3644 il->inta_mask = CSR_INI_SET_MASK;
3646 if (il_alloc_traffic_mem(il))
3647 IL_ERR("Not enough memory to generate traffic log\n");
3649 /***************************
3650 * 2. Initializing PCI bus
3651 * *************************/
3652 pci_disable_link_state(pdev,
3653 PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
3654 PCIE_LINK_STATE_CLKPM);
3656 if (pci_enable_device(pdev)) {
3658 goto out_ieee80211_free_hw;
3661 pci_set_master(pdev);
3663 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3665 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3667 IL_WARN("No suitable DMA available.\n");
3668 goto out_pci_disable_device;
3671 pci_set_drvdata(pdev, il);
3672 err = pci_request_regions(pdev, DRV_NAME);
3674 goto out_pci_disable_device;
3676 /***********************
3677 * 3. Read REV Register
3678 * ********************/
3679 il->hw_base = pci_iomap(pdev, 0, 0);
3682 goto out_pci_release_regions;
3685 D_INFO("pci_resource_len = 0x%08llx\n",
3686 (unsigned long long)pci_resource_len(pdev, 0));
3687 D_INFO("pci_resource_base = %p\n", il->hw_base);
3689 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3690 * PCI Tx retries from interfering with C3 CPU state */
3691 pci_write_config_byte(pdev, 0x41, 0x00);
3693 /* these spin locks will be used in apm_ops.init and EEPROM access
3694 * we should init now
3696 spin_lock_init(&il->reg_lock);
3697 spin_lock_init(&il->lock);
3700 * stop and reset the on-board processor just in case it is in a
3701 * strange state ... like being left stranded by a primary kernel
3702 * and this is now the kdump kernel trying to start up
3704 _il_wr(il, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3706 /***********************
3708 * ********************/
3710 /* Read the EEPROM */
3711 err = il_eeprom_init(il);
3713 IL_ERR("Unable to init EEPROM\n");
3716 /* MAC Address location in EEPROM same for 3945/4965 */
3717 eeprom = (struct il3945_eeprom *)il->eeprom;
3718 D_INFO("MAC address: %pM\n", eeprom->mac_address);
3719 SET_IEEE80211_PERM_ADDR(il->hw, eeprom->mac_address);
3721 /***********************
3722 * 5. Setup HW Constants
3723 * ********************/
3724 /* Device-specific setup */
3725 if (il3945_hw_set_hw_params(il)) {
3726 IL_ERR("failed to set hw settings\n");
3727 goto out_eeprom_free;
3730 /***********************
3732 * ********************/
3734 err = il3945_init_drv(il);
3736 IL_ERR("initializing driver failed\n");
3737 goto out_unset_hw_params;
3740 IL_INFO("Detected Intel Wireless WiFi Link %s\n", il->cfg->name);
3742 /***********************
3744 * ********************/
3746 spin_lock_irqsave(&il->lock, flags);
3747 il_disable_interrupts(il);
3748 spin_unlock_irqrestore(&il->lock, flags);
3750 pci_enable_msi(il->pci_dev);
3752 err = request_irq(il->pci_dev->irq, il_isr, IRQF_SHARED, DRV_NAME, il);
3754 IL_ERR("Error allocating IRQ %d\n", il->pci_dev->irq);
3755 goto out_disable_msi;
3758 err = sysfs_create_group(&pdev->dev.kobj, &il3945_attribute_group);
3760 IL_ERR("failed to create sysfs device attributes\n");
3761 goto out_release_irq;
3764 il_set_rxon_channel(il, &il->bands[IEEE80211_BAND_2GHZ].channels[5],
3766 il3945_setup_deferred_work(il);
3767 il3945_setup_handlers(il);
3768 il_power_initialize(il);
3770 /*********************************
3771 * 8. Setup and Register mac80211
3772 * *******************************/
3774 il_enable_interrupts(il);
3776 err = il3945_setup_mac(il);
3778 goto out_remove_sysfs;
3780 err = il_dbgfs_register(il, DRV_NAME);
3782 IL_ERR("failed to create debugfs files. Ignoring error: %d\n",
3785 /* Start monitoring the killswitch */
3786 queue_delayed_work(il->workqueue, &il->_3945.rfkill_poll, 2 * HZ);
3791 destroy_workqueue(il->workqueue);
3792 il->workqueue = NULL;
3793 sysfs_remove_group(&pdev->dev.kobj, &il3945_attribute_group);
3795 free_irq(il->pci_dev->irq, il);
3797 pci_disable_msi(il->pci_dev);
3799 il_free_channel_map(il);
3800 out_unset_hw_params:
3801 il3945_unset_hw_params(il);
3805 pci_iounmap(pdev, il->hw_base);
3806 out_pci_release_regions:
3807 pci_release_regions(pdev);
3808 out_pci_disable_device:
3809 pci_set_drvdata(pdev, NULL);
3810 pci_disable_device(pdev);
3811 out_ieee80211_free_hw:
3812 il_free_traffic_mem(il);
3813 ieee80211_free_hw(il->hw);
3818 static void __devexit
3819 il3945_pci_remove(struct pci_dev *pdev)
3821 struct il_priv *il = pci_get_drvdata(pdev);
3822 unsigned long flags;
3827 D_INFO("*** UNLOAD DRIVER ***\n");
3829 il_dbgfs_unregister(il);
3831 set_bit(S_EXIT_PENDING, &il->status);
3835 if (il->mac80211_registered) {
3836 ieee80211_unregister_hw(il->hw);
3837 il->mac80211_registered = 0;
3843 * Make sure device is reset to low power before unloading driver.
3844 * This may be redundant with il_down(), but there are paths to
3845 * run il_down() without calling apm_ops.stop(), and there are
3846 * paths to avoid running il_down() at all before leaving driver.
3847 * This (inexpensive) call *makes sure* device is reset.
3851 /* make sure we flush any pending irq or
3852 * tasklet for the driver
3854 spin_lock_irqsave(&il->lock, flags);
3855 il_disable_interrupts(il);
3856 spin_unlock_irqrestore(&il->lock, flags);
3858 il3945_synchronize_irq(il);
3860 sysfs_remove_group(&pdev->dev.kobj, &il3945_attribute_group);
3862 cancel_delayed_work_sync(&il->_3945.rfkill_poll);
3864 il3945_dealloc_ucode_pci(il);
3867 il3945_rx_queue_free(il, &il->rxq);
3868 il3945_hw_txq_ctx_free(il);
3870 il3945_unset_hw_params(il);
3872 /*netif_stop_queue(dev); */
3873 flush_workqueue(il->workqueue);
3875 /* ieee80211_unregister_hw calls il3945_mac_stop, which flushes
3876 * il->workqueue... so we can't take down the workqueue
3878 destroy_workqueue(il->workqueue);
3879 il->workqueue = NULL;
3880 il_free_traffic_mem(il);
3882 free_irq(pdev->irq, il);
3883 pci_disable_msi(pdev);
3885 pci_iounmap(pdev, il->hw_base);
3886 pci_release_regions(pdev);
3887 pci_disable_device(pdev);
3888 pci_set_drvdata(pdev, NULL);
3890 il_free_channel_map(il);
3892 kfree(il->scan_cmd);
3894 dev_kfree_skb(il->beacon_skb);
3896 ieee80211_free_hw(il->hw);
3899 /*****************************************************************************
3901 * driver and module entry point
3903 *****************************************************************************/
3905 static struct pci_driver il3945_driver = {
3907 .id_table = il3945_hw_card_ids,
3908 .probe = il3945_pci_probe,
3909 .remove = __devexit_p(il3945_pci_remove),
3910 .driver.pm = IL_LEGACY_PM_OPS,
3918 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3919 pr_info(DRV_COPYRIGHT "\n");
3921 ret = il3945_rate_control_register();
3923 pr_err("Unable to register rate control algorithm: %d\n", ret);
3927 ret = pci_register_driver(&il3945_driver);
3929 pr_err("Unable to initialize PCI module\n");
3930 goto error_register;
3936 il3945_rate_control_unregister();
3943 pci_unregister_driver(&il3945_driver);
3944 il3945_rate_control_unregister();
3947 MODULE_FIRMWARE(IL3945_MODULE_FIRMWARE(IL3945_UCODE_API_MAX));
3949 module_param_named(antenna, il3945_mod_params.antenna, int, S_IRUGO);
3950 MODULE_PARM_DESC(antenna, "select antenna (1=Main, 2=Aux, default 0 [both])");
3951 module_param_named(swcrypto, il3945_mod_params.sw_crypto, int, S_IRUGO);
3952 MODULE_PARM_DESC(swcrypto, "using software crypto (default 1 [software])");
3953 module_param_named(disable_hw_scan, il3945_mod_params.disable_hw_scan, int,
3955 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 1)");
3956 #ifdef CONFIG_IWLEGACY_DEBUG
3957 module_param_named(debug, il_debug_level, uint, S_IRUGO | S_IWUSR);
3958 MODULE_PARM_DESC(debug, "debug output mask");
3960 module_param_named(fw_restart, il3945_mod_params.restart_fw, int, S_IRUGO);
3961 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3963 module_exit(il3945_exit);
3964 module_init(il3945_init);