1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/sched.h>
37 #include <linux/skbuff.h>
38 #include <linux/netdevice.h>
39 #include <linux/wireless.h>
40 #include <linux/firmware.h>
41 #include <linux/etherdevice.h>
42 #include <linux/if_arp.h>
44 #include <net/mac80211.h>
46 #include <asm/div64.h>
48 #define DRV_NAME "iwlagn"
50 #include "iwl-eeprom.h"
54 #include "iwl-helpers.h"
56 #include "iwl-calib.h"
60 /******************************************************************************
64 ******************************************************************************/
67 * module name, copyright, version, etc.
69 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
71 #ifdef CONFIG_IWLWIFI_DEBUG
77 #define DRV_VERSION IWLWIFI_VERSION VD
80 MODULE_DESCRIPTION(DRV_DESCRIPTION);
81 MODULE_VERSION(DRV_VERSION);
82 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
83 MODULE_LICENSE("GPL");
84 MODULE_ALIAS("iwl4965");
86 /*************** STATION TABLE MANAGEMENT ****
87 * mac80211 should be examined to determine if sta_info is duplicating
88 * the functionality provided here
91 /**************************************************************/
94 * iwl_commit_rxon - commit staging_rxon to hardware
96 * The RXON command in staging_rxon is committed to the hardware and
97 * the active_rxon structure is updated with the new data. This
98 * function correctly transitions out of the RXON_ASSOC_MSK state if
99 * a HW tune is required based on the RXON structure changes.
101 int iwl_commit_rxon(struct iwl_priv *priv)
103 /* cast away the const for active_rxon in this function */
104 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
107 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
109 if (!iwl_is_alive(priv))
112 /* always get timestamp with Rx frame */
113 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
115 ret = iwl_check_rxon_cmd(priv);
117 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
122 * receive commit_rxon request
123 * abort any previous channel switch if still in process
125 if (priv->switch_rxon.switch_in_progress &&
126 (priv->switch_rxon.channel != priv->staging_rxon.channel)) {
127 IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
128 le16_to_cpu(priv->switch_rxon.channel));
129 priv->switch_rxon.switch_in_progress = false;
132 /* If we don't need to send a full RXON, we can use
133 * iwl_rxon_assoc_cmd which is used to reconfigure filter
134 * and other flags for the current radio configuration. */
135 if (!iwl_full_rxon_required(priv)) {
136 ret = iwl_send_rxon_assoc(priv);
138 IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
142 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
143 iwl_print_rx_config_cmd(priv);
147 /* If we are currently associated and the new config requires
148 * an RXON_ASSOC and the new config wants the associated mask enabled,
149 * we must clear the associated from the active configuration
150 * before we apply the new config */
151 if (iwl_is_associated(priv) && new_assoc) {
152 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
153 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
155 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
156 sizeof(struct iwl_rxon_cmd),
159 /* If the mask clearing failed then we set
160 * active_rxon back to what it was previously */
162 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
163 IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
166 iwl_clear_ucode_stations(priv, false);
167 iwl_restore_stations(priv);
170 IWL_DEBUG_INFO(priv, "Sending RXON\n"
171 "* with%s RXON_FILTER_ASSOC_MSK\n"
174 (new_assoc ? "" : "out"),
175 le16_to_cpu(priv->staging_rxon.channel),
176 priv->staging_rxon.bssid_addr);
178 iwl_set_rxon_hwcrypto(priv, !priv->cfg->mod_params->sw_crypto);
180 /* Apply the new configuration
181 * RXON unassoc clears the station table in uCode so restoration of
182 * stations is needed after it (the RXON command) completes
185 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
186 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
188 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
191 IWL_DEBUG_INFO(priv, "Return from !new_assoc RXON. \n");
192 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
193 iwl_clear_ucode_stations(priv, false);
194 iwl_restore_stations(priv);
197 priv->start_calib = 0;
200 * allow CTS-to-self if possible for new association.
201 * this is relevant only for 5000 series and up,
202 * but will not damage 4965
204 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
206 /* Apply the new configuration
207 * RXON assoc doesn't clear the station table in uCode,
209 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
210 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
212 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
215 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
217 iwl_print_rx_config_cmd(priv);
219 iwl_init_sensitivity(priv);
221 /* If we issue a new RXON command which required a tune then we must
222 * send a new TXPOWER command or we won't be able to Tx any frames */
223 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
225 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
232 void iwl_update_chain_flags(struct iwl_priv *priv)
235 if (priv->cfg->ops->hcmd->set_rxon_chain)
236 priv->cfg->ops->hcmd->set_rxon_chain(priv);
237 iwlcore_commit_rxon(priv);
240 static void iwl_clear_free_frames(struct iwl_priv *priv)
242 struct list_head *element;
244 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
247 while (!list_empty(&priv->free_frames)) {
248 element = priv->free_frames.next;
250 kfree(list_entry(element, struct iwl_frame, list));
251 priv->frames_count--;
254 if (priv->frames_count) {
255 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
257 priv->frames_count = 0;
261 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
263 struct iwl_frame *frame;
264 struct list_head *element;
265 if (list_empty(&priv->free_frames)) {
266 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
268 IWL_ERR(priv, "Could not allocate frame!\n");
272 priv->frames_count++;
276 element = priv->free_frames.next;
278 return list_entry(element, struct iwl_frame, list);
281 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
283 memset(frame, 0, sizeof(*frame));
284 list_add(&frame->list, &priv->free_frames);
287 static u32 iwl_fill_beacon_frame(struct iwl_priv *priv,
288 struct ieee80211_hdr *hdr,
291 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
292 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
293 (priv->iw_mode != NL80211_IFTYPE_AP)))
296 if (priv->ibss_beacon->len > left)
299 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
301 return priv->ibss_beacon->len;
304 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
305 static void iwl_set_beacon_tim(struct iwl_priv *priv,
306 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
307 u8 *beacon, u32 frame_size)
310 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
313 * The index is relative to frame start but we start looking at the
314 * variable-length part of the beacon.
316 tim_idx = mgmt->u.beacon.variable - beacon;
318 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
319 while ((tim_idx < (frame_size - 2)) &&
320 (beacon[tim_idx] != WLAN_EID_TIM))
321 tim_idx += beacon[tim_idx+1] + 2;
323 /* If TIM field was found, set variables */
324 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
325 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
326 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
328 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
331 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
332 struct iwl_frame *frame)
334 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
339 * We have to set up the TX command, the TX Beacon command, and the
343 /* Initialize memory */
344 tx_beacon_cmd = &frame->u.beacon;
345 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
347 /* Set up TX beacon contents */
348 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
349 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
350 if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
353 /* Set up TX command fields */
354 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
355 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
356 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
357 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
358 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
360 /* Set up TX beacon command fields */
361 iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
364 /* Set up packet rate and flags */
365 rate = iwl_rate_get_lowest_plcp(priv);
366 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant);
367 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
368 if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
369 rate_flags |= RATE_MCS_CCK_MSK;
370 tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
373 return sizeof(*tx_beacon_cmd) + frame_size;
375 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
377 struct iwl_frame *frame;
378 unsigned int frame_size;
381 frame = iwl_get_free_frame(priv);
383 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
388 frame_size = iwl_hw_get_beacon_cmd(priv, frame);
390 IWL_ERR(priv, "Error configuring the beacon command\n");
391 iwl_free_frame(priv, frame);
395 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
398 iwl_free_frame(priv, frame);
403 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
405 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
407 dma_addr_t addr = get_unaligned_le32(&tb->lo);
408 if (sizeof(dma_addr_t) > sizeof(u32))
410 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
415 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
417 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
419 return le16_to_cpu(tb->hi_n_len) >> 4;
422 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
423 dma_addr_t addr, u16 len)
425 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
426 u16 hi_n_len = len << 4;
428 put_unaligned_le32(addr, &tb->lo);
429 if (sizeof(dma_addr_t) > sizeof(u32))
430 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
432 tb->hi_n_len = cpu_to_le16(hi_n_len);
434 tfd->num_tbs = idx + 1;
437 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
439 return tfd->num_tbs & 0x1f;
443 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
444 * @priv - driver private data
447 * Does NOT advance any TFD circular buffer read/write indexes
448 * Does NOT free the TFD itself (which is within circular buffer)
450 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
452 struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
454 struct pci_dev *dev = priv->pci_dev;
455 int index = txq->q.read_ptr;
459 tfd = &tfd_tmp[index];
461 /* Sanity check on number of chunks */
462 num_tbs = iwl_tfd_get_num_tbs(tfd);
464 if (num_tbs >= IWL_NUM_OF_TBS) {
465 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
466 /* @todo issue fatal error, it is quite serious situation */
472 pci_unmap_single(dev,
473 pci_unmap_addr(&txq->meta[index], mapping),
474 pci_unmap_len(&txq->meta[index], len),
475 PCI_DMA_BIDIRECTIONAL);
477 /* Unmap chunks, if any. */
478 for (i = 1; i < num_tbs; i++) {
479 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
480 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
483 dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
484 txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
489 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
490 struct iwl_tx_queue *txq,
491 dma_addr_t addr, u16 len,
495 struct iwl_tfd *tfd, *tfd_tmp;
499 tfd_tmp = (struct iwl_tfd *)txq->tfds;
500 tfd = &tfd_tmp[q->write_ptr];
503 memset(tfd, 0, sizeof(*tfd));
505 num_tbs = iwl_tfd_get_num_tbs(tfd);
507 /* Each TFD can point to a maximum 20 Tx buffers */
508 if (num_tbs >= IWL_NUM_OF_TBS) {
509 IWL_ERR(priv, "Error can not send more than %d chunks\n",
514 BUG_ON(addr & ~DMA_BIT_MASK(36));
515 if (unlikely(addr & ~IWL_TX_DMA_MASK))
516 IWL_ERR(priv, "Unaligned address = %llx\n",
517 (unsigned long long)addr);
519 iwl_tfd_set_tb(tfd, num_tbs, addr, len);
525 * Tell nic where to find circular buffer of Tx Frame Descriptors for
526 * given Tx queue, and enable the DMA channel used for that queue.
528 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
529 * channels supported in hardware.
531 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
532 struct iwl_tx_queue *txq)
534 int txq_id = txq->q.id;
536 /* Circular buffer (TFD queue in DRAM) physical base address */
537 iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
538 txq->q.dma_addr >> 8);
543 /******************************************************************************
545 * Generic RX handler implementations
547 ******************************************************************************/
548 static void iwl_rx_reply_alive(struct iwl_priv *priv,
549 struct iwl_rx_mem_buffer *rxb)
551 struct iwl_rx_packet *pkt = rxb_addr(rxb);
552 struct iwl_alive_resp *palive;
553 struct delayed_work *pwork;
555 palive = &pkt->u.alive_frame;
557 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
559 palive->is_valid, palive->ver_type,
560 palive->ver_subtype);
562 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
563 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
564 memcpy(&priv->card_alive_init,
566 sizeof(struct iwl_init_alive_resp));
567 pwork = &priv->init_alive_start;
569 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
570 memcpy(&priv->card_alive, &pkt->u.alive_frame,
571 sizeof(struct iwl_alive_resp));
572 pwork = &priv->alive_start;
575 /* We delay the ALIVE response by 5ms to
576 * give the HW RF Kill time to activate... */
577 if (palive->is_valid == UCODE_VALID_OK)
578 queue_delayed_work(priv->workqueue, pwork,
579 msecs_to_jiffies(5));
581 IWL_WARN(priv, "uCode did not respond OK.\n");
584 static void iwl_bg_beacon_update(struct work_struct *work)
586 struct iwl_priv *priv =
587 container_of(work, struct iwl_priv, beacon_update);
588 struct sk_buff *beacon;
590 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
591 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
594 IWL_ERR(priv, "update beacon failed\n");
598 mutex_lock(&priv->mutex);
599 /* new beacon skb is allocated every time; dispose previous.*/
600 if (priv->ibss_beacon)
601 dev_kfree_skb(priv->ibss_beacon);
603 priv->ibss_beacon = beacon;
604 mutex_unlock(&priv->mutex);
606 iwl_send_beacon_cmd(priv);
610 * iwl_bg_statistics_periodic - Timer callback to queue statistics
612 * This callback is provided in order to send a statistics request.
614 * This timer function is continually reset to execute within
615 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
616 * was received. We need to ensure we receive the statistics in order
617 * to update the temperature used for calibrating the TXPOWER.
619 static void iwl_bg_statistics_periodic(unsigned long data)
621 struct iwl_priv *priv = (struct iwl_priv *)data;
623 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
626 /* dont send host command if rf-kill is on */
627 if (!iwl_is_ready_rf(priv))
630 iwl_send_statistics_request(priv, CMD_ASYNC, false);
634 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
635 u32 start_idx, u32 num_events,
639 u32 ptr; /* SRAM byte address of log data */
640 u32 ev, time, data; /* event log data */
641 unsigned long reg_flags;
644 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
646 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
648 /* Make sure device is powered up for SRAM reads */
649 spin_lock_irqsave(&priv->reg_lock, reg_flags);
650 if (iwl_grab_nic_access(priv)) {
651 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
655 /* Set starting address; reads will auto-increment */
656 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
660 * "time" is actually "data" for mode 0 (no timestamp).
661 * place event id # at far right for easier visual parsing.
663 for (i = 0; i < num_events; i++) {
664 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
665 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
667 trace_iwlwifi_dev_ucode_cont_event(priv,
670 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
671 trace_iwlwifi_dev_ucode_cont_event(priv,
675 /* Allow device to power down */
676 iwl_release_nic_access(priv);
677 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
680 static void iwl_continuous_event_trace(struct iwl_priv *priv)
682 u32 capacity; /* event log capacity in # entries */
683 u32 base; /* SRAM byte address of event log header */
684 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
685 u32 num_wraps; /* # times uCode wrapped to top of log */
686 u32 next_entry; /* index of next entry to be written by uCode */
688 if (priv->ucode_type == UCODE_INIT)
689 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
691 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
692 if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
693 capacity = iwl_read_targ_mem(priv, base);
694 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
695 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
696 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
700 if (num_wraps == priv->event_log.num_wraps) {
701 iwl_print_cont_event_trace(priv,
702 base, priv->event_log.next_entry,
703 next_entry - priv->event_log.next_entry,
705 priv->event_log.non_wraps_count++;
707 if ((num_wraps - priv->event_log.num_wraps) > 1)
708 priv->event_log.wraps_more_count++;
710 priv->event_log.wraps_once_count++;
711 trace_iwlwifi_dev_ucode_wrap_event(priv,
712 num_wraps - priv->event_log.num_wraps,
713 next_entry, priv->event_log.next_entry);
714 if (next_entry < priv->event_log.next_entry) {
715 iwl_print_cont_event_trace(priv, base,
716 priv->event_log.next_entry,
717 capacity - priv->event_log.next_entry,
720 iwl_print_cont_event_trace(priv, base, 0,
723 iwl_print_cont_event_trace(priv, base,
724 next_entry, capacity - next_entry,
727 iwl_print_cont_event_trace(priv, base, 0,
731 priv->event_log.num_wraps = num_wraps;
732 priv->event_log.next_entry = next_entry;
736 * iwl_bg_ucode_trace - Timer callback to log ucode event
738 * The timer is continually set to execute every
739 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
740 * this function is to perform continuous uCode event logging operation
743 static void iwl_bg_ucode_trace(unsigned long data)
745 struct iwl_priv *priv = (struct iwl_priv *)data;
747 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
750 if (priv->event_log.ucode_trace) {
751 iwl_continuous_event_trace(priv);
752 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
753 mod_timer(&priv->ucode_trace,
754 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
758 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
759 struct iwl_rx_mem_buffer *rxb)
761 #ifdef CONFIG_IWLWIFI_DEBUG
762 struct iwl_rx_packet *pkt = rxb_addr(rxb);
763 struct iwl4965_beacon_notif *beacon =
764 (struct iwl4965_beacon_notif *)pkt->u.raw;
765 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
767 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
768 "tsf %d %d rate %d\n",
769 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
770 beacon->beacon_notify_hdr.failure_frame,
771 le32_to_cpu(beacon->ibss_mgr_status),
772 le32_to_cpu(beacon->high_tsf),
773 le32_to_cpu(beacon->low_tsf), rate);
776 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
777 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
778 queue_work(priv->workqueue, &priv->beacon_update);
781 /* Handle notification from uCode that card's power state is changing
782 * due to software, hardware, or critical temperature RFKILL */
783 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
784 struct iwl_rx_mem_buffer *rxb)
786 struct iwl_rx_packet *pkt = rxb_addr(rxb);
787 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
788 unsigned long status = priv->status;
790 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
791 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
792 (flags & SW_CARD_DISABLED) ? "Kill" : "On",
793 (flags & CT_CARD_DISABLED) ?
794 "Reached" : "Not reached");
796 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
799 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
800 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
802 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
803 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
805 if (!(flags & RXON_CARD_DISABLED)) {
806 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
807 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
808 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
809 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
811 if (flags & CT_CARD_DISABLED)
812 iwl_tt_enter_ct_kill(priv);
814 if (!(flags & CT_CARD_DISABLED))
815 iwl_tt_exit_ct_kill(priv);
817 if (flags & HW_CARD_DISABLED)
818 set_bit(STATUS_RF_KILL_HW, &priv->status);
820 clear_bit(STATUS_RF_KILL_HW, &priv->status);
823 if (!(flags & RXON_CARD_DISABLED))
824 iwl_scan_cancel(priv);
826 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
827 test_bit(STATUS_RF_KILL_HW, &priv->status)))
828 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
829 test_bit(STATUS_RF_KILL_HW, &priv->status));
831 wake_up_interruptible(&priv->wait_command_queue);
834 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
836 if (src == IWL_PWR_SRC_VAUX) {
837 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
838 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
839 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
840 ~APMG_PS_CTRL_MSK_PWR_SRC);
842 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
843 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
844 ~APMG_PS_CTRL_MSK_PWR_SRC);
851 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
853 * Setup the RX handlers for each of the reply types sent from the uCode
856 * This function chains into the hardware specific files for them to setup
857 * any hardware specific handlers as well.
859 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
861 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
862 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
863 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
864 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
865 iwl_rx_spectrum_measure_notif;
866 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
867 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
868 iwl_rx_pm_debug_statistics_notif;
869 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
872 * The same handler is used for both the REPLY to a discrete
873 * statistics request from the host as well as for the periodic
874 * statistics notifications (after received beacons) from the uCode.
876 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
877 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
879 iwl_setup_rx_scan_handlers(priv);
881 /* status change handler */
882 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
884 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
885 iwl_rx_missed_beacon_notif;
887 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
888 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
890 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
891 /* Set up hardware specific Rx handlers */
892 priv->cfg->ops->lib->rx_handler_setup(priv);
896 * iwl_rx_handle - Main entry function for receiving responses from uCode
898 * Uses the priv->rx_handlers callback function array to invoke
899 * the appropriate handlers, including command responses,
900 * frame-received notifications, and other notifications.
902 void iwl_rx_handle(struct iwl_priv *priv)
904 struct iwl_rx_mem_buffer *rxb;
905 struct iwl_rx_packet *pkt;
906 struct iwl_rx_queue *rxq = &priv->rxq;
914 /* uCode's read index (stored in shared DRAM) indicates the last Rx
915 * buffer that the driver may process (last buffer filled by ucode). */
916 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
919 /* Rx interrupt, but nothing sent from uCode */
921 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
923 /* calculate total frames need to be restock after handling RX */
924 total_empty = r - rxq->write_actual;
926 total_empty += RX_QUEUE_SIZE;
928 if (total_empty > (RX_QUEUE_SIZE / 2))
934 /* If an RXB doesn't have a Rx queue slot associated with it,
935 * then a bug has been introduced in the queue refilling
936 * routines -- catch it here */
939 rxq->queue[i] = NULL;
941 pci_unmap_page(priv->pci_dev, rxb->page_dma,
942 PAGE_SIZE << priv->hw_params.rx_page_order,
946 trace_iwlwifi_dev_rx(priv, pkt,
947 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
949 /* Reclaim a command buffer only if this packet is a response
950 * to a (driver-originated) command.
951 * If the packet (e.g. Rx frame) originated from uCode,
952 * there is no command buffer to reclaim.
953 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
954 * but apparently a few don't get set; catch them here. */
955 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
956 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
957 (pkt->hdr.cmd != REPLY_RX) &&
958 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
959 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
960 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
961 (pkt->hdr.cmd != REPLY_TX);
963 /* Based on type of command response or notification,
964 * handle those that need handling via function in
965 * rx_handlers table. See iwl_setup_rx_handlers() */
966 if (priv->rx_handlers[pkt->hdr.cmd]) {
967 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
968 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
969 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
970 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
972 /* No handling needed */
974 "r %d i %d No handler needed for %s, 0x%02x\n",
975 r, i, get_cmd_string(pkt->hdr.cmd),
980 * XXX: After here, we should always check rxb->page
981 * against NULL before touching it or its virtual
982 * memory (pkt). Because some rx_handler might have
983 * already taken or freed the pages.
987 /* Invoke any callbacks, transfer the buffer to caller,
988 * and fire off the (possibly) blocking iwl_send_cmd()
989 * as we reclaim the driver command queue */
991 iwl_tx_cmd_complete(priv, rxb);
993 IWL_WARN(priv, "Claim null rxb?\n");
996 /* Reuse the page if possible. For notification packets and
997 * SKBs that fail to Rx correctly, add them back into the
998 * rx_free list for reuse later. */
999 spin_lock_irqsave(&rxq->lock, flags);
1000 if (rxb->page != NULL) {
1001 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1002 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1003 PCI_DMA_FROMDEVICE);
1004 list_add_tail(&rxb->list, &rxq->rx_free);
1007 list_add_tail(&rxb->list, &rxq->rx_used);
1009 spin_unlock_irqrestore(&rxq->lock, flags);
1011 i = (i + 1) & RX_QUEUE_MASK;
1012 /* If there are a lot of unused frames,
1013 * restock the Rx queue so ucode wont assert. */
1018 iwlagn_rx_replenish_now(priv);
1024 /* Backtrack one entry */
1027 iwlagn_rx_replenish_now(priv);
1029 iwlagn_rx_queue_restock(priv);
1032 /* call this function to flush any scheduled tasklet */
1033 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1035 /* wait to make sure we flush pending tasklet*/
1036 synchronize_irq(priv->pci_dev->irq);
1037 tasklet_kill(&priv->irq_tasklet);
1040 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
1042 u32 inta, handled = 0;
1044 unsigned long flags;
1046 #ifdef CONFIG_IWLWIFI_DEBUG
1050 spin_lock_irqsave(&priv->lock, flags);
1052 /* Ack/clear/reset pending uCode interrupts.
1053 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1054 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1055 inta = iwl_read32(priv, CSR_INT);
1056 iwl_write32(priv, CSR_INT, inta);
1058 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1059 * Any new interrupts that happen after this, either while we're
1060 * in this tasklet, or later, will show up in next ISR/tasklet. */
1061 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1062 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1064 #ifdef CONFIG_IWLWIFI_DEBUG
1065 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1066 /* just for debug */
1067 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1068 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1069 inta, inta_mask, inta_fh);
1073 spin_unlock_irqrestore(&priv->lock, flags);
1075 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1076 * atomic, make sure that inta covers all the interrupts that
1077 * we've discovered, even if FH interrupt came in just after
1078 * reading CSR_INT. */
1079 if (inta_fh & CSR49_FH_INT_RX_MASK)
1080 inta |= CSR_INT_BIT_FH_RX;
1081 if (inta_fh & CSR49_FH_INT_TX_MASK)
1082 inta |= CSR_INT_BIT_FH_TX;
1084 /* Now service all interrupt bits discovered above. */
1085 if (inta & CSR_INT_BIT_HW_ERR) {
1086 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1088 /* Tell the device to stop sending interrupts */
1089 iwl_disable_interrupts(priv);
1091 priv->isr_stats.hw++;
1092 iwl_irq_handle_error(priv);
1094 handled |= CSR_INT_BIT_HW_ERR;
1099 #ifdef CONFIG_IWLWIFI_DEBUG
1100 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1101 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1102 if (inta & CSR_INT_BIT_SCD) {
1103 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1104 "the frame/frames.\n");
1105 priv->isr_stats.sch++;
1108 /* Alive notification via Rx interrupt will do the real work */
1109 if (inta & CSR_INT_BIT_ALIVE) {
1110 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1111 priv->isr_stats.alive++;
1115 /* Safely ignore these bits for debug checks below */
1116 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1118 /* HW RF KILL switch toggled */
1119 if (inta & CSR_INT_BIT_RF_KILL) {
1121 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1122 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1125 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1126 hw_rf_kill ? "disable radio" : "enable radio");
1128 priv->isr_stats.rfkill++;
1130 /* driver only loads ucode once setting the interface up.
1131 * the driver allows loading the ucode even if the radio
1132 * is killed. Hence update the killswitch state here. The
1133 * rfkill handler will care about restarting if needed.
1135 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1137 set_bit(STATUS_RF_KILL_HW, &priv->status);
1139 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1140 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1143 handled |= CSR_INT_BIT_RF_KILL;
1146 /* Chip got too hot and stopped itself */
1147 if (inta & CSR_INT_BIT_CT_KILL) {
1148 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1149 priv->isr_stats.ctkill++;
1150 handled |= CSR_INT_BIT_CT_KILL;
1153 /* Error detected by uCode */
1154 if (inta & CSR_INT_BIT_SW_ERR) {
1155 IWL_ERR(priv, "Microcode SW error detected. "
1156 " Restarting 0x%X.\n", inta);
1157 priv->isr_stats.sw++;
1158 priv->isr_stats.sw_err = inta;
1159 iwl_irq_handle_error(priv);
1160 handled |= CSR_INT_BIT_SW_ERR;
1164 * uCode wakes up after power-down sleep.
1165 * Tell device about any new tx or host commands enqueued,
1166 * and about any Rx buffers made available while asleep.
1168 if (inta & CSR_INT_BIT_WAKEUP) {
1169 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1170 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1171 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1172 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1173 priv->isr_stats.wakeup++;
1174 handled |= CSR_INT_BIT_WAKEUP;
1177 /* All uCode command responses, including Tx command responses,
1178 * Rx "responses" (frame-received notification), and other
1179 * notifications from uCode come through here*/
1180 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1181 iwl_rx_handle(priv);
1182 priv->isr_stats.rx++;
1183 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1186 /* This "Tx" DMA channel is used only for loading uCode */
1187 if (inta & CSR_INT_BIT_FH_TX) {
1188 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1189 priv->isr_stats.tx++;
1190 handled |= CSR_INT_BIT_FH_TX;
1191 /* Wake up uCode load routine, now that load is complete */
1192 priv->ucode_write_complete = 1;
1193 wake_up_interruptible(&priv->wait_command_queue);
1196 if (inta & ~handled) {
1197 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1198 priv->isr_stats.unhandled++;
1201 if (inta & ~(priv->inta_mask)) {
1202 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1203 inta & ~priv->inta_mask);
1204 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1207 /* Re-enable all interrupts */
1208 /* only Re-enable if diabled by irq */
1209 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1210 iwl_enable_interrupts(priv);
1212 #ifdef CONFIG_IWLWIFI_DEBUG
1213 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1214 inta = iwl_read32(priv, CSR_INT);
1215 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1216 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1217 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1218 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1223 /* tasklet for iwlagn interrupt */
1224 static void iwl_irq_tasklet(struct iwl_priv *priv)
1228 unsigned long flags;
1230 #ifdef CONFIG_IWLWIFI_DEBUG
1234 spin_lock_irqsave(&priv->lock, flags);
1236 /* Ack/clear/reset pending uCode interrupts.
1237 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1239 iwl_write32(priv, CSR_INT, priv->_agn.inta);
1241 inta = priv->_agn.inta;
1243 #ifdef CONFIG_IWLWIFI_DEBUG
1244 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1245 /* just for debug */
1246 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1247 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1252 spin_unlock_irqrestore(&priv->lock, flags);
1254 /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1255 priv->_agn.inta = 0;
1257 /* Now service all interrupt bits discovered above. */
1258 if (inta & CSR_INT_BIT_HW_ERR) {
1259 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1261 /* Tell the device to stop sending interrupts */
1262 iwl_disable_interrupts(priv);
1264 priv->isr_stats.hw++;
1265 iwl_irq_handle_error(priv);
1267 handled |= CSR_INT_BIT_HW_ERR;
1272 #ifdef CONFIG_IWLWIFI_DEBUG
1273 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1274 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1275 if (inta & CSR_INT_BIT_SCD) {
1276 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1277 "the frame/frames.\n");
1278 priv->isr_stats.sch++;
1281 /* Alive notification via Rx interrupt will do the real work */
1282 if (inta & CSR_INT_BIT_ALIVE) {
1283 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1284 priv->isr_stats.alive++;
1288 /* Safely ignore these bits for debug checks below */
1289 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1291 /* HW RF KILL switch toggled */
1292 if (inta & CSR_INT_BIT_RF_KILL) {
1294 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1295 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1298 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1299 hw_rf_kill ? "disable radio" : "enable radio");
1301 priv->isr_stats.rfkill++;
1303 /* driver only loads ucode once setting the interface up.
1304 * the driver allows loading the ucode even if the radio
1305 * is killed. Hence update the killswitch state here. The
1306 * rfkill handler will care about restarting if needed.
1308 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1310 set_bit(STATUS_RF_KILL_HW, &priv->status);
1312 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1313 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1316 handled |= CSR_INT_BIT_RF_KILL;
1319 /* Chip got too hot and stopped itself */
1320 if (inta & CSR_INT_BIT_CT_KILL) {
1321 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1322 priv->isr_stats.ctkill++;
1323 handled |= CSR_INT_BIT_CT_KILL;
1326 /* Error detected by uCode */
1327 if (inta & CSR_INT_BIT_SW_ERR) {
1328 IWL_ERR(priv, "Microcode SW error detected. "
1329 " Restarting 0x%X.\n", inta);
1330 priv->isr_stats.sw++;
1331 priv->isr_stats.sw_err = inta;
1332 iwl_irq_handle_error(priv);
1333 handled |= CSR_INT_BIT_SW_ERR;
1336 /* uCode wakes up after power-down sleep */
1337 if (inta & CSR_INT_BIT_WAKEUP) {
1338 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1339 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1340 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1341 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1343 priv->isr_stats.wakeup++;
1345 handled |= CSR_INT_BIT_WAKEUP;
1348 /* All uCode command responses, including Tx command responses,
1349 * Rx "responses" (frame-received notification), and other
1350 * notifications from uCode come through here*/
1351 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1352 CSR_INT_BIT_RX_PERIODIC)) {
1353 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1354 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1355 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1356 iwl_write32(priv, CSR_FH_INT_STATUS,
1357 CSR49_FH_INT_RX_MASK);
1359 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1360 handled |= CSR_INT_BIT_RX_PERIODIC;
1361 iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1363 /* Sending RX interrupt require many steps to be done in the
1365 * 1- write interrupt to current index in ICT table.
1367 * 3- update RX shared data to indicate last write index.
1368 * 4- send interrupt.
1369 * This could lead to RX race, driver could receive RX interrupt
1370 * but the shared data changes does not reflect this;
1371 * periodic interrupt will detect any dangling Rx activity.
1374 /* Disable periodic interrupt; we use it as just a one-shot. */
1375 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1376 CSR_INT_PERIODIC_DIS);
1377 iwl_rx_handle(priv);
1380 * Enable periodic interrupt in 8 msec only if we received
1381 * real RX interrupt (instead of just periodic int), to catch
1382 * any dangling Rx interrupt. If it was just the periodic
1383 * interrupt, there was no dangling Rx activity, and no need
1384 * to extend the periodic interrupt; one-shot is enough.
1386 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1387 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1388 CSR_INT_PERIODIC_ENA);
1390 priv->isr_stats.rx++;
1393 /* This "Tx" DMA channel is used only for loading uCode */
1394 if (inta & CSR_INT_BIT_FH_TX) {
1395 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1396 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1397 priv->isr_stats.tx++;
1398 handled |= CSR_INT_BIT_FH_TX;
1399 /* Wake up uCode load routine, now that load is complete */
1400 priv->ucode_write_complete = 1;
1401 wake_up_interruptible(&priv->wait_command_queue);
1404 if (inta & ~handled) {
1405 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1406 priv->isr_stats.unhandled++;
1409 if (inta & ~(priv->inta_mask)) {
1410 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1411 inta & ~priv->inta_mask);
1414 /* Re-enable all interrupts */
1415 /* only Re-enable if diabled by irq */
1416 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1417 iwl_enable_interrupts(priv);
1420 /* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1421 #define ACK_CNT_RATIO (50)
1422 #define BA_TIMEOUT_CNT (5)
1423 #define BA_TIMEOUT_MAX (16)
1426 * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1428 * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1429 * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1432 bool iwl_good_ack_health(struct iwl_priv *priv,
1433 struct iwl_rx_packet *pkt)
1436 int actual_ack_cnt_delta, expected_ack_cnt_delta;
1437 int ba_timeout_delta;
1439 actual_ack_cnt_delta =
1440 le32_to_cpu(pkt->u.stats.tx.actual_ack_cnt) -
1441 le32_to_cpu(priv->statistics.tx.actual_ack_cnt);
1442 expected_ack_cnt_delta =
1443 le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
1444 le32_to_cpu(priv->statistics.tx.expected_ack_cnt);
1446 le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
1447 le32_to_cpu(priv->statistics.tx.agg.ba_timeout);
1448 if ((priv->_agn.agg_tids_count > 0) &&
1449 (expected_ack_cnt_delta > 0) &&
1450 (((actual_ack_cnt_delta * 100) / expected_ack_cnt_delta)
1452 (ba_timeout_delta > BA_TIMEOUT_CNT)) {
1453 IWL_DEBUG_RADIO(priv, "actual_ack_cnt delta = %d,"
1454 " expected_ack_cnt = %d\n",
1455 actual_ack_cnt_delta, expected_ack_cnt_delta);
1457 #ifdef CONFIG_IWLWIFI_DEBUG
1458 IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
1459 priv->delta_statistics.tx.rx_detected_cnt);
1460 IWL_DEBUG_RADIO(priv,
1461 "ack_or_ba_timeout_collision delta = %d\n",
1462 priv->delta_statistics.tx.
1463 ack_or_ba_timeout_collision);
1465 IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
1467 if (!actual_ack_cnt_delta &&
1468 (ba_timeout_delta >= BA_TIMEOUT_MAX))
1475 /******************************************************************************
1477 * uCode download functions
1479 ******************************************************************************/
1481 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1483 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1484 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1485 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1486 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1487 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1488 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1491 static void iwl_nic_start(struct iwl_priv *priv)
1493 /* Remove all resets to allow NIC to operate */
1494 iwl_write32(priv, CSR_RESET, 0);
1498 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1499 static int iwl_mac_setup_register(struct iwl_priv *priv);
1501 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1503 const char *name_pre = priv->cfg->fw_name_pre;
1506 priv->fw_index = priv->cfg->ucode_api_max;
1510 if (priv->fw_index < priv->cfg->ucode_api_min) {
1511 IWL_ERR(priv, "no suitable firmware found!\n");
1515 sprintf(priv->firmware_name, "%s%d%s",
1516 name_pre, priv->fw_index, ".ucode");
1518 IWL_DEBUG_INFO(priv, "attempting to load firmware '%s'\n",
1519 priv->firmware_name);
1521 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1522 &priv->pci_dev->dev, GFP_KERNEL, priv,
1523 iwl_ucode_callback);
1527 * iwl_ucode_callback - callback when firmware was loaded
1529 * If loaded successfully, copies the firmware into buffers
1530 * for the card to fetch (via DMA).
1532 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1534 struct iwl_priv *priv = context;
1535 struct iwl_ucode_header *ucode;
1536 const unsigned int api_max = priv->cfg->ucode_api_max;
1537 const unsigned int api_min = priv->cfg->ucode_api_min;
1541 u32 inst_size, data_size, init_size, init_data_size, boot_size;
1546 IWL_ERR(priv, "request for firmware file '%s' failed.\n",
1547 priv->firmware_name);
1551 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1552 priv->firmware_name, ucode_raw->size);
1554 /* Make sure that we got at least the v1 header! */
1555 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
1556 IWL_ERR(priv, "File size way too small!\n");
1560 /* Data from ucode file: header followed by uCode images */
1561 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1563 priv->ucode_ver = le32_to_cpu(ucode->ver);
1564 api_ver = IWL_UCODE_API(priv->ucode_ver);
1565 build = priv->cfg->ops->ucode->get_build(ucode, api_ver);
1566 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
1567 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
1568 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
1570 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
1571 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
1572 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
1574 /* api_ver should match the api version forming part of the
1575 * firmware filename ... but we don't check for that and only rely
1576 * on the API version read from firmware header from here on forward */
1578 if (api_ver < api_min || api_ver > api_max) {
1579 IWL_ERR(priv, "Driver unable to support your firmware API. "
1580 "Driver supports v%u, firmware is v%u.\n",
1585 if (api_ver != api_max)
1586 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1587 "got v%u. New firmware can be obtained "
1588 "from http://www.intellinuxwireless.org.\n",
1591 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1592 IWL_UCODE_MAJOR(priv->ucode_ver),
1593 IWL_UCODE_MINOR(priv->ucode_ver),
1594 IWL_UCODE_API(priv->ucode_ver),
1595 IWL_UCODE_SERIAL(priv->ucode_ver));
1597 snprintf(priv->hw->wiphy->fw_version,
1598 sizeof(priv->hw->wiphy->fw_version),
1600 IWL_UCODE_MAJOR(priv->ucode_ver),
1601 IWL_UCODE_MINOR(priv->ucode_ver),
1602 IWL_UCODE_API(priv->ucode_ver),
1603 IWL_UCODE_SERIAL(priv->ucode_ver));
1606 IWL_DEBUG_INFO(priv, "Build %u\n", build);
1608 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
1609 IWL_DEBUG_INFO(priv, "NVM Type: %s, version: 0x%x\n",
1610 (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
1611 ? "OTP" : "EEPROM", eeprom_ver);
1613 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1615 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1617 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1619 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1621 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1623 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1627 * For any of the failures below (before allocating pci memory)
1628 * we will try to load a version with a smaller API -- maybe the
1629 * user just got a corrupted version of the latest API.
1632 /* Verify size of file vs. image size info in file's header */
1633 if (ucode_raw->size !=
1634 priv->cfg->ops->ucode->get_header_size(api_ver) +
1635 inst_size + data_size + init_size +
1636 init_data_size + boot_size) {
1638 IWL_DEBUG_INFO(priv,
1639 "uCode file size %d does not match expected size\n",
1640 (int)ucode_raw->size);
1644 /* Verify that uCode images will fit in card's SRAM */
1645 if (inst_size > priv->hw_params.max_inst_size) {
1646 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1651 if (data_size > priv->hw_params.max_data_size) {
1652 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1656 if (init_size > priv->hw_params.max_inst_size) {
1657 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1661 if (init_data_size > priv->hw_params.max_data_size) {
1662 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1666 if (boot_size > priv->hw_params.max_bsm_size) {
1667 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1672 /* Allocate ucode buffers for card's bus-master loading ... */
1674 /* Runtime instructions and 2 copies of data:
1675 * 1) unmodified from disk
1676 * 2) backup cache for save/restore during power-downs */
1677 priv->ucode_code.len = inst_size;
1678 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1680 priv->ucode_data.len = data_size;
1681 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1683 priv->ucode_data_backup.len = data_size;
1684 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1686 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1687 !priv->ucode_data_backup.v_addr)
1690 /* Initialization instructions and data */
1691 if (init_size && init_data_size) {
1692 priv->ucode_init.len = init_size;
1693 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1695 priv->ucode_init_data.len = init_data_size;
1696 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1698 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1702 /* Bootstrap (instructions only, no data) */
1704 priv->ucode_boot.len = boot_size;
1705 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1707 if (!priv->ucode_boot.v_addr)
1711 /* Copy images into buffers for card's bus-master reads ... */
1713 /* Runtime instructions (first block of data in file) */
1715 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1716 memcpy(priv->ucode_code.v_addr, src, len);
1719 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1720 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1722 /* Runtime data (2nd block)
1723 * NOTE: Copy into backup buffer will be done in iwl_up() */
1725 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1726 memcpy(priv->ucode_data.v_addr, src, len);
1727 memcpy(priv->ucode_data_backup.v_addr, src, len);
1730 /* Initialization instructions (3rd block) */
1733 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1735 memcpy(priv->ucode_init.v_addr, src, len);
1739 /* Initialization data (4th block) */
1740 if (init_data_size) {
1741 len = init_data_size;
1742 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1744 memcpy(priv->ucode_init_data.v_addr, src, len);
1748 /* Bootstrap instructions (5th block) */
1750 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1751 memcpy(priv->ucode_boot.v_addr, src, len);
1753 /**************************************************
1754 * This is still part of probe() in a sense...
1756 * 9. Setup and register with mac80211 and debugfs
1757 **************************************************/
1758 err = iwl_mac_setup_register(priv);
1762 err = iwl_dbgfs_register(priv, DRV_NAME);
1764 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1766 /* We have our copies now, allow OS release its copies */
1767 release_firmware(ucode_raw);
1771 /* try next, if any */
1772 if (iwl_request_firmware(priv, false))
1774 release_firmware(ucode_raw);
1778 IWL_ERR(priv, "failed to allocate pci memory\n");
1779 iwl_dealloc_ucode_pci(priv);
1781 device_release_driver(&priv->pci_dev->dev);
1782 release_firmware(ucode_raw);
1785 static const char *desc_lookup_text[] = {
1790 "NMI_INTERRUPT_WDG",
1794 "HW_ERROR_TUNE_LOCK",
1795 "HW_ERROR_TEMPERATURE",
1796 "ILLEGAL_CHAN_FREQ",
1799 "NMI_INTERRUPT_HOST",
1800 "NMI_INTERRUPT_ACTION_PT",
1801 "NMI_INTERRUPT_UNKNOWN",
1802 "UCODE_VERSION_MISMATCH",
1803 "HW_ERROR_ABS_LOCK",
1804 "HW_ERROR_CAL_LOCK_FAIL",
1805 "NMI_INTERRUPT_INST_ACTION_PT",
1806 "NMI_INTERRUPT_DATA_ACTION_PT",
1808 "NMI_INTERRUPT_TRM",
1809 "NMI_INTERRUPT_BREAK_POINT"
1814 "ADVANCED SYSASSERT"
1817 static const char *desc_lookup(int i)
1819 int max = ARRAY_SIZE(desc_lookup_text) - 1;
1821 if (i < 0 || i > max)
1824 return desc_lookup_text[i];
1827 #define ERROR_START_OFFSET (1 * sizeof(u32))
1828 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1830 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1833 u32 desc, time, count, base, data1;
1834 u32 blink1, blink2, ilink1, ilink2;
1836 if (priv->ucode_type == UCODE_INIT)
1837 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1839 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1841 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1843 "Not valid error log pointer 0x%08X for %s uCode\n",
1844 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
1848 count = iwl_read_targ_mem(priv, base);
1850 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1851 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1852 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1853 priv->status, count);
1856 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1857 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1858 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1859 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1860 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1861 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1862 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1863 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1864 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1866 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
1867 blink1, blink2, ilink1, ilink2);
1869 IWL_ERR(priv, "Desc Time "
1870 "data1 data2 line\n");
1871 IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1872 desc_lookup(desc), desc, time, data1, data2, line);
1873 IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n");
1874 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1879 #define EVENT_START_OFFSET (4 * sizeof(u32))
1882 * iwl_print_event_log - Dump error event log to syslog
1885 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1886 u32 num_events, u32 mode,
1887 int pos, char **buf, size_t bufsz)
1890 u32 base; /* SRAM byte address of event log header */
1891 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1892 u32 ptr; /* SRAM byte address of log data */
1893 u32 ev, time, data; /* event log data */
1894 unsigned long reg_flags;
1896 if (num_events == 0)
1898 if (priv->ucode_type == UCODE_INIT)
1899 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1901 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1904 event_size = 2 * sizeof(u32);
1906 event_size = 3 * sizeof(u32);
1908 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1910 /* Make sure device is powered up for SRAM reads */
1911 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1912 iwl_grab_nic_access(priv);
1914 /* Set starting address; reads will auto-increment */
1915 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1918 /* "time" is actually "data" for mode 0 (no timestamp).
1919 * place event id # at far right for easier visual parsing. */
1920 for (i = 0; i < num_events; i++) {
1921 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1922 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1926 pos += scnprintf(*buf + pos, bufsz - pos,
1927 "EVT_LOG:0x%08x:%04u\n",
1930 trace_iwlwifi_dev_ucode_event(priv, 0,
1932 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1936 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1938 pos += scnprintf(*buf + pos, bufsz - pos,
1939 "EVT_LOGT:%010u:0x%08x:%04u\n",
1942 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1944 trace_iwlwifi_dev_ucode_event(priv, time,
1950 /* Allow device to power down */
1951 iwl_release_nic_access(priv);
1952 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1957 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1959 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1960 u32 num_wraps, u32 next_entry,
1962 int pos, char **buf, size_t bufsz)
1965 * display the newest DEFAULT_LOG_ENTRIES entries
1966 * i.e the entries just before the next ont that uCode would fill.
1969 if (next_entry < size) {
1970 pos = iwl_print_event_log(priv,
1971 capacity - (size - next_entry),
1972 size - next_entry, mode,
1974 pos = iwl_print_event_log(priv, 0,
1978 pos = iwl_print_event_log(priv, next_entry - size,
1979 size, mode, pos, buf, bufsz);
1981 if (next_entry < size) {
1982 pos = iwl_print_event_log(priv, 0, next_entry,
1983 mode, pos, buf, bufsz);
1985 pos = iwl_print_event_log(priv, next_entry - size,
1986 size, mode, pos, buf, bufsz);
1992 /* For sanity check only. Actual size is determined by uCode, typ. 512 */
1993 #define MAX_EVENT_LOG_SIZE (512)
1995 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1997 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1998 char **buf, bool display)
2000 u32 base; /* SRAM byte address of event log header */
2001 u32 capacity; /* event log capacity in # entries */
2002 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2003 u32 num_wraps; /* # times uCode wrapped to top of log */
2004 u32 next_entry; /* index of next entry to be written by uCode */
2005 u32 size; /* # entries that we'll print */
2009 if (priv->ucode_type == UCODE_INIT)
2010 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
2012 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2014 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2016 "Invalid event log pointer 0x%08X for %s uCode\n",
2017 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
2021 /* event log header */
2022 capacity = iwl_read_targ_mem(priv, base);
2023 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2024 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2025 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2027 if (capacity > MAX_EVENT_LOG_SIZE) {
2028 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
2029 capacity, MAX_EVENT_LOG_SIZE);
2030 capacity = MAX_EVENT_LOG_SIZE;
2033 if (next_entry > MAX_EVENT_LOG_SIZE) {
2034 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2035 next_entry, MAX_EVENT_LOG_SIZE);
2036 next_entry = MAX_EVENT_LOG_SIZE;
2039 size = num_wraps ? capacity : next_entry;
2041 /* bail out if nothing in log */
2043 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2047 #ifdef CONFIG_IWLWIFI_DEBUG
2048 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2049 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2050 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2052 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2053 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2055 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2058 #ifdef CONFIG_IWLWIFI_DEBUG
2061 bufsz = capacity * 48;
2064 *buf = kmalloc(bufsz, GFP_KERNEL);
2068 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2070 * if uCode has wrapped back to top of log,
2071 * start at the oldest entry,
2072 * i.e the next one that uCode would fill.
2075 pos = iwl_print_event_log(priv, next_entry,
2076 capacity - next_entry, mode,
2078 /* (then/else) start at top of log */
2079 pos = iwl_print_event_log(priv, 0,
2080 next_entry, mode, pos, buf, bufsz);
2082 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2083 next_entry, size, mode,
2086 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2087 next_entry, size, mode,
2094 * iwl_alive_start - called after REPLY_ALIVE notification received
2095 * from protocol/runtime uCode (initialization uCode's
2096 * Alive gets handled by iwl_init_alive_start()).
2098 static void iwl_alive_start(struct iwl_priv *priv)
2102 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2104 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2105 /* We had an error bringing up the hardware, so take it
2106 * all the way back down so we can try again */
2107 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2111 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2112 * This is a paranoid check, because we would not have gotten the
2113 * "runtime" alive if code weren't properly loaded. */
2114 if (iwl_verify_ucode(priv)) {
2115 /* Runtime instruction load was bad;
2116 * take it all the way back down so we can try again */
2117 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2121 ret = priv->cfg->ops->lib->alive_notify(priv);
2124 "Could not complete ALIVE transition [ntf]: %d\n", ret);
2128 /* After the ALIVE response, we can send host commands to the uCode */
2129 set_bit(STATUS_ALIVE, &priv->status);
2131 if (priv->cfg->ops->lib->recover_from_tx_stall) {
2132 /* Enable timer to monitor the driver queues */
2133 mod_timer(&priv->monitor_recover,
2135 msecs_to_jiffies(priv->cfg->monitor_recover_period));
2138 if (iwl_is_rfkill(priv))
2141 ieee80211_wake_queues(priv->hw);
2143 priv->active_rate = IWL_RATES_MASK;
2145 /* Configure Tx antenna selection based on H/W config */
2146 if (priv->cfg->ops->hcmd->set_tx_ant)
2147 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2149 if (iwl_is_associated(priv)) {
2150 struct iwl_rxon_cmd *active_rxon =
2151 (struct iwl_rxon_cmd *)&priv->active_rxon;
2152 /* apply any changes in staging */
2153 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2154 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2156 /* Initialize our rx_config data */
2157 iwl_connection_init_rx_config(priv, priv->iw_mode);
2159 if (priv->cfg->ops->hcmd->set_rxon_chain)
2160 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2162 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2165 /* Configure Bluetooth device coexistence support */
2166 iwl_send_bt_config(priv);
2168 iwl_reset_run_time_calib(priv);
2170 /* Configure the adapter for unassociated operation */
2171 iwlcore_commit_rxon(priv);
2173 /* At this point, the NIC is initialized and operational */
2174 iwl_rf_kill_ct_config(priv);
2176 iwl_leds_init(priv);
2178 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2179 set_bit(STATUS_READY, &priv->status);
2180 wake_up_interruptible(&priv->wait_command_queue);
2182 iwl_power_update_mode(priv, true);
2183 IWL_DEBUG_INFO(priv, "Updated power mode\n");
2189 queue_work(priv->workqueue, &priv->restart);
2192 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2194 static void __iwl_down(struct iwl_priv *priv)
2196 unsigned long flags;
2197 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2199 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2202 set_bit(STATUS_EXIT_PENDING, &priv->status);
2204 iwl_clear_ucode_stations(priv, true);
2206 /* Unblock any waiting calls */
2207 wake_up_interruptible_all(&priv->wait_command_queue);
2209 /* Wipe out the EXIT_PENDING status bit if we are not actually
2210 * exiting the module */
2212 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2214 /* stop and reset the on-board processor */
2215 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2217 /* tell the device to stop sending interrupts */
2218 spin_lock_irqsave(&priv->lock, flags);
2219 iwl_disable_interrupts(priv);
2220 spin_unlock_irqrestore(&priv->lock, flags);
2221 iwl_synchronize_irq(priv);
2223 if (priv->mac80211_registered)
2224 ieee80211_stop_queues(priv->hw);
2226 /* If we have not previously called iwl_init() then
2227 * clear all bits but the RF Kill bit and return */
2228 if (!iwl_is_init(priv)) {
2229 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2231 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2232 STATUS_GEO_CONFIGURED |
2233 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2234 STATUS_EXIT_PENDING;
2238 /* ...otherwise clear out all the status bits but the RF Kill
2239 * bit and continue taking the NIC down. */
2240 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2242 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2243 STATUS_GEO_CONFIGURED |
2244 test_bit(STATUS_FW_ERROR, &priv->status) <<
2246 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2247 STATUS_EXIT_PENDING;
2249 /* device going down, Stop using ICT table */
2250 iwl_disable_ict(priv);
2252 iwlagn_txq_ctx_stop(priv);
2253 iwlagn_rxq_stop(priv);
2255 /* Power-down device's busmaster DMA clocks */
2256 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2259 /* Make sure (redundant) we've released our request to stay awake */
2260 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2262 /* Stop the device, and put it in low power state */
2263 priv->cfg->ops->lib->apm_ops.stop(priv);
2266 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2268 if (priv->ibss_beacon)
2269 dev_kfree_skb(priv->ibss_beacon);
2270 priv->ibss_beacon = NULL;
2272 /* clear out any free frames */
2273 iwl_clear_free_frames(priv);
2276 static void iwl_down(struct iwl_priv *priv)
2278 mutex_lock(&priv->mutex);
2280 mutex_unlock(&priv->mutex);
2282 iwl_cancel_deferred_work(priv);
2285 #define HW_READY_TIMEOUT (50)
2287 static int iwl_set_hw_ready(struct iwl_priv *priv)
2291 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2292 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
2294 /* See if we got it */
2295 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2296 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2297 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2299 if (ret != -ETIMEDOUT)
2300 priv->hw_ready = true;
2302 priv->hw_ready = false;
2304 IWL_DEBUG_INFO(priv, "hardware %s\n",
2305 (priv->hw_ready == 1) ? "ready" : "not ready");
2309 static int iwl_prepare_card_hw(struct iwl_priv *priv)
2313 IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter \n");
2315 ret = iwl_set_hw_ready(priv);
2319 /* If HW is not ready, prepare the conditions to check again */
2320 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2321 CSR_HW_IF_CONFIG_REG_PREPARE);
2323 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2324 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
2325 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
2327 /* HW should be ready by now, check again. */
2328 if (ret != -ETIMEDOUT)
2329 iwl_set_hw_ready(priv);
2334 #define MAX_HW_RESTARTS 5
2336 static int __iwl_up(struct iwl_priv *priv)
2341 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2342 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2346 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2347 IWL_ERR(priv, "ucode not available for device bringup\n");
2351 iwl_prepare_card_hw(priv);
2353 if (!priv->hw_ready) {
2354 IWL_WARN(priv, "Exit HW not ready\n");
2358 /* If platform's RF_KILL switch is NOT set to KILL */
2359 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2360 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2362 set_bit(STATUS_RF_KILL_HW, &priv->status);
2364 if (iwl_is_rfkill(priv)) {
2365 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
2367 iwl_enable_interrupts(priv);
2368 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2372 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2374 ret = iwlagn_hw_nic_init(priv);
2376 IWL_ERR(priv, "Unable to init nic\n");
2380 /* make sure rfkill handshake bits are cleared */
2381 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2382 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2383 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2385 /* clear (again), then enable host interrupts */
2386 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2387 iwl_enable_interrupts(priv);
2389 /* really make sure rfkill handshake bits are cleared */
2390 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2391 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2393 /* Copy original ucode data image from disk into backup cache.
2394 * This will be used to initialize the on-board processor's
2395 * data SRAM for a clean start when the runtime program first loads. */
2396 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2397 priv->ucode_data.len);
2399 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2401 /* load bootstrap state machine,
2402 * load bootstrap program into processor's memory,
2403 * prepare to load the "initialize" uCode */
2404 ret = priv->cfg->ops->lib->load_ucode(priv);
2407 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
2412 /* start card; "initialize" will load runtime ucode */
2413 iwl_nic_start(priv);
2415 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2420 set_bit(STATUS_EXIT_PENDING, &priv->status);
2422 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2424 /* tried to restart and config the device for as long as our
2425 * patience could withstand */
2426 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2431 /*****************************************************************************
2433 * Workqueue callbacks
2435 *****************************************************************************/
2437 static void iwl_bg_init_alive_start(struct work_struct *data)
2439 struct iwl_priv *priv =
2440 container_of(data, struct iwl_priv, init_alive_start.work);
2442 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2445 mutex_lock(&priv->mutex);
2446 priv->cfg->ops->lib->init_alive_start(priv);
2447 mutex_unlock(&priv->mutex);
2450 static void iwl_bg_alive_start(struct work_struct *data)
2452 struct iwl_priv *priv =
2453 container_of(data, struct iwl_priv, alive_start.work);
2455 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2458 /* enable dram interrupt */
2459 iwl_reset_ict(priv);
2461 mutex_lock(&priv->mutex);
2462 iwl_alive_start(priv);
2463 mutex_unlock(&priv->mutex);
2466 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2468 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2469 run_time_calib_work);
2471 mutex_lock(&priv->mutex);
2473 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2474 test_bit(STATUS_SCANNING, &priv->status)) {
2475 mutex_unlock(&priv->mutex);
2479 if (priv->start_calib) {
2480 iwl_chain_noise_calibration(priv, &priv->statistics);
2482 iwl_sensitivity_calibration(priv, &priv->statistics);
2485 mutex_unlock(&priv->mutex);
2489 static void iwl_bg_restart(struct work_struct *data)
2491 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2493 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2496 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2497 mutex_lock(&priv->mutex);
2500 mutex_unlock(&priv->mutex);
2502 ieee80211_restart_hw(priv->hw);
2506 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2509 mutex_lock(&priv->mutex);
2511 mutex_unlock(&priv->mutex);
2515 static void iwl_bg_rx_replenish(struct work_struct *data)
2517 struct iwl_priv *priv =
2518 container_of(data, struct iwl_priv, rx_replenish);
2520 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2523 mutex_lock(&priv->mutex);
2524 iwlagn_rx_replenish(priv);
2525 mutex_unlock(&priv->mutex);
2528 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2530 void iwl_post_associate(struct iwl_priv *priv)
2532 struct ieee80211_conf *conf = NULL;
2535 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2536 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2540 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2544 if (!priv->vif || !priv->is_open)
2547 iwl_scan_cancel_timeout(priv, 200);
2549 conf = ieee80211_get_hw_conf(priv->hw);
2551 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2552 iwlcore_commit_rxon(priv);
2554 iwl_setup_rxon_timing(priv);
2555 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2556 sizeof(priv->rxon_timing), &priv->rxon_timing);
2558 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2559 "Attempting to continue.\n");
2561 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2563 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2565 if (priv->cfg->ops->hcmd->set_rxon_chain)
2566 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2568 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2570 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
2571 priv->assoc_id, priv->beacon_int);
2573 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2574 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2576 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2578 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2579 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2580 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2582 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2584 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2585 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2589 iwlcore_commit_rxon(priv);
2591 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
2592 priv->assoc_id, priv->active_rxon.bssid_addr);
2594 switch (priv->iw_mode) {
2595 case NL80211_IFTYPE_STATION:
2598 case NL80211_IFTYPE_ADHOC:
2600 /* assume default assoc id */
2603 iwl_add_local_station(priv, priv->bssid, true);
2604 iwl_send_beacon_cmd(priv);
2609 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2610 __func__, priv->iw_mode);
2614 /* the chain noise calibration will enabled PM upon completion
2615 * If chain noise has already been run, then we need to enable
2616 * power management here */
2617 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2618 iwl_power_update_mode(priv, false);
2620 /* Enable Rx differential gain and sensitivity calibrations */
2621 iwl_chain_noise_reset(priv);
2622 priv->start_calib = 1;
2626 /*****************************************************************************
2628 * mac80211 entry point functions
2630 *****************************************************************************/
2632 #define UCODE_READY_TIMEOUT (4 * HZ)
2635 * Not a mac80211 entry point function, but it fits in with all the
2636 * other mac80211 functions grouped here.
2638 static int iwl_mac_setup_register(struct iwl_priv *priv)
2641 struct ieee80211_hw *hw = priv->hw;
2642 hw->rate_control_algorithm = "iwl-agn-rs";
2644 /* Tell mac80211 our characteristics */
2645 hw->flags = IEEE80211_HW_SIGNAL_DBM |
2646 IEEE80211_HW_NOISE_DBM |
2647 IEEE80211_HW_AMPDU_AGGREGATION |
2648 IEEE80211_HW_SPECTRUM_MGMT;
2650 if (!priv->cfg->broken_powersave)
2651 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2652 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2654 if (priv->cfg->sku & IWL_SKU_N)
2655 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2656 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2658 hw->sta_data_size = sizeof(struct iwl_station_priv);
2659 hw->wiphy->interface_modes =
2660 BIT(NL80211_IFTYPE_STATION) |
2661 BIT(NL80211_IFTYPE_ADHOC);
2663 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY |
2664 WIPHY_FLAG_DISABLE_BEACON_HINTS;
2667 * For now, disable PS by default because it affects
2668 * RX performance significantly.
2670 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2672 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX + 1;
2673 /* we create the 802.11 header and a zero-length SSID element */
2674 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
2676 /* Default value; 4 EDCA QOS priorities */
2679 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2681 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2682 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2683 &priv->bands[IEEE80211_BAND_2GHZ];
2684 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2685 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2686 &priv->bands[IEEE80211_BAND_5GHZ];
2688 ret = ieee80211_register_hw(priv->hw);
2690 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2693 priv->mac80211_registered = 1;
2699 static int iwl_mac_start(struct ieee80211_hw *hw)
2701 struct iwl_priv *priv = hw->priv;
2704 IWL_DEBUG_MAC80211(priv, "enter\n");
2706 /* we should be verifying the device is ready to be opened */
2707 mutex_lock(&priv->mutex);
2708 ret = __iwl_up(priv);
2709 mutex_unlock(&priv->mutex);
2714 if (iwl_is_rfkill(priv))
2717 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2719 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2720 * mac80211 will not be run successfully. */
2721 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2722 test_bit(STATUS_READY, &priv->status),
2723 UCODE_READY_TIMEOUT);
2725 if (!test_bit(STATUS_READY, &priv->status)) {
2726 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2727 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2732 iwl_led_start(priv);
2736 IWL_DEBUG_MAC80211(priv, "leave\n");
2740 static void iwl_mac_stop(struct ieee80211_hw *hw)
2742 struct iwl_priv *priv = hw->priv;
2744 IWL_DEBUG_MAC80211(priv, "enter\n");
2751 if (iwl_is_ready_rf(priv) || test_bit(STATUS_SCAN_HW, &priv->status)) {
2752 /* stop mac, cancel any scan request and clear
2753 * RXON_FILTER_ASSOC_MSK BIT
2755 mutex_lock(&priv->mutex);
2756 iwl_scan_cancel_timeout(priv, 100);
2757 mutex_unlock(&priv->mutex);
2762 flush_workqueue(priv->workqueue);
2764 /* enable interrupts again in order to receive rfkill changes */
2765 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2766 iwl_enable_interrupts(priv);
2768 IWL_DEBUG_MAC80211(priv, "leave\n");
2771 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2773 struct iwl_priv *priv = hw->priv;
2775 IWL_DEBUG_MACDUMP(priv, "enter\n");
2777 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2778 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2780 if (iwlagn_tx_skb(priv, skb))
2781 dev_kfree_skb_any(skb);
2783 IWL_DEBUG_MACDUMP(priv, "leave\n");
2784 return NETDEV_TX_OK;
2787 void iwl_config_ap(struct iwl_priv *priv)
2791 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2794 /* The following should be done only at AP bring up */
2795 if (!iwl_is_associated(priv)) {
2797 /* RXON - unassoc (to set timing command) */
2798 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2799 iwlcore_commit_rxon(priv);
2802 iwl_setup_rxon_timing(priv);
2803 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2804 sizeof(priv->rxon_timing), &priv->rxon_timing);
2806 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2807 "Attempting to continue.\n");
2809 /* AP has all antennas */
2810 priv->chain_noise_data.active_chains =
2811 priv->hw_params.valid_rx_ant;
2812 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2813 if (priv->cfg->ops->hcmd->set_rxon_chain)
2814 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2816 /* FIXME: what should be the assoc_id for AP? */
2817 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2818 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2819 priv->staging_rxon.flags |=
2820 RXON_FLG_SHORT_PREAMBLE_MSK;
2822 priv->staging_rxon.flags &=
2823 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2825 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2826 if (priv->assoc_capability &
2827 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2828 priv->staging_rxon.flags |=
2829 RXON_FLG_SHORT_SLOT_MSK;
2831 priv->staging_rxon.flags &=
2832 ~RXON_FLG_SHORT_SLOT_MSK;
2834 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2835 priv->staging_rxon.flags &=
2836 ~RXON_FLG_SHORT_SLOT_MSK;
2838 /* restore RXON assoc */
2839 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2840 iwlcore_commit_rxon(priv);
2841 iwl_add_bcast_station(priv);
2843 iwl_send_beacon_cmd(priv);
2845 /* FIXME - we need to add code here to detect a totally new
2846 * configuration, reset the AP, unassoc, rxon timing, assoc,
2847 * clear sta table, add BCAST sta... */
2850 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2851 struct ieee80211_vif *vif,
2852 struct ieee80211_key_conf *keyconf,
2853 struct ieee80211_sta *sta,
2854 u32 iv32, u16 *phase1key)
2857 struct iwl_priv *priv = hw->priv;
2858 IWL_DEBUG_MAC80211(priv, "enter\n");
2860 iwl_update_tkip_key(priv, keyconf,
2861 sta ? sta->addr : iwl_bcast_addr,
2864 IWL_DEBUG_MAC80211(priv, "leave\n");
2867 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2868 struct ieee80211_vif *vif,
2869 struct ieee80211_sta *sta,
2870 struct ieee80211_key_conf *key)
2872 struct iwl_priv *priv = hw->priv;
2876 bool is_default_wep_key = false;
2878 IWL_DEBUG_MAC80211(priv, "enter\n");
2880 if (priv->cfg->mod_params->sw_crypto) {
2881 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2884 addr = sta ? sta->addr : iwl_bcast_addr;
2885 sta_id = iwl_find_station(priv, addr);
2886 if (sta_id == IWL_INVALID_STATION) {
2887 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2893 mutex_lock(&priv->mutex);
2894 iwl_scan_cancel_timeout(priv, 100);
2896 /* If we are getting WEP group key and we didn't receive any key mapping
2897 * so far, we are in legacy wep mode (group key only), otherwise we are
2899 * In legacy wep mode, we use another host command to the uCode */
2900 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2901 priv->iw_mode != NL80211_IFTYPE_AP) {
2903 is_default_wep_key = !priv->key_mapping_key;
2905 is_default_wep_key =
2906 (key->hw_key_idx == HW_KEY_DEFAULT);
2911 if (is_default_wep_key)
2912 ret = iwl_set_default_wep_key(priv, key);
2914 ret = iwl_set_dynamic_key(priv, key, sta_id);
2916 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2919 if (is_default_wep_key)
2920 ret = iwl_remove_default_wep_key(priv, key);
2922 ret = iwl_remove_dynamic_key(priv, key, sta_id);
2924 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2930 mutex_unlock(&priv->mutex);
2931 IWL_DEBUG_MAC80211(priv, "leave\n");
2936 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2937 struct ieee80211_vif *vif,
2938 enum ieee80211_ampdu_mlme_action action,
2939 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2941 struct iwl_priv *priv = hw->priv;
2944 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2947 if (!(priv->cfg->sku & IWL_SKU_N))
2951 case IEEE80211_AMPDU_RX_START:
2952 IWL_DEBUG_HT(priv, "start Rx\n");
2953 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2954 case IEEE80211_AMPDU_RX_STOP:
2955 IWL_DEBUG_HT(priv, "stop Rx\n");
2956 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2957 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2961 case IEEE80211_AMPDU_TX_START:
2962 IWL_DEBUG_HT(priv, "start Tx\n");
2963 ret = iwlagn_tx_agg_start(priv, sta->addr, tid, ssn);
2965 priv->_agn.agg_tids_count++;
2966 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2967 priv->_agn.agg_tids_count);
2970 case IEEE80211_AMPDU_TX_STOP:
2971 IWL_DEBUG_HT(priv, "stop Tx\n");
2972 ret = iwlagn_tx_agg_stop(priv, sta->addr, tid);
2973 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
2974 priv->_agn.agg_tids_count--;
2975 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2976 priv->_agn.agg_tids_count);
2978 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2982 case IEEE80211_AMPDU_TX_OPERATIONAL:
2986 IWL_DEBUG_HT(priv, "unknown\n");
2993 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2994 struct ieee80211_low_level_stats *stats)
2996 struct iwl_priv *priv = hw->priv;
2999 IWL_DEBUG_MAC80211(priv, "enter\n");
3000 IWL_DEBUG_MAC80211(priv, "leave\n");
3005 static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
3006 struct ieee80211_vif *vif,
3007 enum sta_notify_cmd cmd,
3008 struct ieee80211_sta *sta)
3010 struct iwl_priv *priv = hw->priv;
3011 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3015 case STA_NOTIFY_SLEEP:
3016 WARN_ON(!sta_priv->client);
3017 sta_priv->asleep = true;
3018 if (atomic_read(&sta_priv->pending_frames) > 0)
3019 ieee80211_sta_block_awake(hw, sta, true);
3021 case STA_NOTIFY_AWAKE:
3022 WARN_ON(!sta_priv->client);
3023 if (!sta_priv->asleep)
3025 sta_priv->asleep = false;
3026 sta_id = iwl_find_station(priv, sta->addr);
3027 if (sta_id != IWL_INVALID_STATION)
3028 iwl_sta_modify_ps_wake(priv, sta_id);
3036 * iwl_restore_wepkeys - Restore WEP keys to device
3038 static void iwl_restore_wepkeys(struct iwl_priv *priv)
3040 mutex_lock(&priv->mutex);
3041 if (priv->iw_mode == NL80211_IFTYPE_STATION &&
3042 priv->default_wep_key &&
3043 iwl_send_static_wepkey_cmd(priv, 0))
3044 IWL_ERR(priv, "Could not send WEP static key\n");
3045 mutex_unlock(&priv->mutex);
3048 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
3049 struct ieee80211_vif *vif,
3050 struct ieee80211_sta *sta)
3052 struct iwl_priv *priv = hw->priv;
3053 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3054 bool is_ap = priv->iw_mode == NL80211_IFTYPE_STATION;
3058 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3061 atomic_set(&sta_priv->pending_frames, 0);
3062 if (vif->type == NL80211_IFTYPE_AP)
3063 sta_priv->client = true;
3065 ret = iwl_add_station_common(priv, sta->addr, is_ap, &sta->ht_cap,
3068 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3070 /* Should we return success if return code is EEXIST ? */
3074 iwl_restore_wepkeys(priv);
3076 /* Initialize rate scaling */
3077 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM \n",
3079 iwl_rs_rate_init(priv, sta, sta_id);
3084 /*****************************************************************************
3088 *****************************************************************************/
3090 #ifdef CONFIG_IWLWIFI_DEBUG
3093 * The following adds a new attribute to the sysfs representation
3094 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3095 * used for controlling the debug level.
3097 * See the level definitions in iwl for details.
3099 * The debug_level being managed using sysfs below is a per device debug
3100 * level that is used instead of the global debug level if it (the per
3101 * device debug level) is set.
3103 static ssize_t show_debug_level(struct device *d,
3104 struct device_attribute *attr, char *buf)
3106 struct iwl_priv *priv = dev_get_drvdata(d);
3107 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3109 static ssize_t store_debug_level(struct device *d,
3110 struct device_attribute *attr,
3111 const char *buf, size_t count)
3113 struct iwl_priv *priv = dev_get_drvdata(d);
3117 ret = strict_strtoul(buf, 0, &val);
3119 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
3121 priv->debug_level = val;
3122 if (iwl_alloc_traffic_mem(priv))
3124 "Not enough memory to generate traffic log\n");
3126 return strnlen(buf, count);
3129 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3130 show_debug_level, store_debug_level);
3133 #endif /* CONFIG_IWLWIFI_DEBUG */
3136 static ssize_t show_temperature(struct device *d,
3137 struct device_attribute *attr, char *buf)
3139 struct iwl_priv *priv = dev_get_drvdata(d);
3141 if (!iwl_is_alive(priv))
3144 return sprintf(buf, "%d\n", priv->temperature);
3147 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3149 static ssize_t show_tx_power(struct device *d,
3150 struct device_attribute *attr, char *buf)
3152 struct iwl_priv *priv = dev_get_drvdata(d);
3154 if (!iwl_is_ready_rf(priv))
3155 return sprintf(buf, "off\n");
3157 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3160 static ssize_t store_tx_power(struct device *d,
3161 struct device_attribute *attr,
3162 const char *buf, size_t count)
3164 struct iwl_priv *priv = dev_get_drvdata(d);
3168 ret = strict_strtoul(buf, 10, &val);
3170 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
3172 ret = iwl_set_tx_power(priv, val, false);
3174 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
3182 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3184 static ssize_t show_statistics(struct device *d,
3185 struct device_attribute *attr, char *buf)
3187 struct iwl_priv *priv = dev_get_drvdata(d);
3188 u32 size = sizeof(struct iwl_notif_statistics);
3189 u32 len = 0, ofs = 0;
3190 u8 *data = (u8 *)&priv->statistics;
3193 if (!iwl_is_alive(priv))
3196 mutex_lock(&priv->mutex);
3197 rc = iwl_send_statistics_request(priv, CMD_SYNC, false);
3198 mutex_unlock(&priv->mutex);
3202 "Error sending statistics request: 0x%08X\n", rc);
3206 while (size && (PAGE_SIZE - len)) {
3207 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3208 PAGE_SIZE - len, 1);
3210 if (PAGE_SIZE - len)
3214 size -= min(size, 16U);
3220 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3222 static ssize_t show_rts_ht_protection(struct device *d,
3223 struct device_attribute *attr, char *buf)
3225 struct iwl_priv *priv = dev_get_drvdata(d);
3227 return sprintf(buf, "%s\n",
3228 priv->cfg->use_rts_for_ht ? "RTS/CTS" : "CTS-to-self");
3231 static ssize_t store_rts_ht_protection(struct device *d,
3232 struct device_attribute *attr,
3233 const char *buf, size_t count)
3235 struct iwl_priv *priv = dev_get_drvdata(d);
3239 ret = strict_strtoul(buf, 10, &val);
3241 IWL_INFO(priv, "Input is not in decimal form.\n");
3243 if (!iwl_is_associated(priv))
3244 priv->cfg->use_rts_for_ht = val ? true : false;
3246 IWL_ERR(priv, "Sta associated with AP - "
3247 "Change protection mechanism is not allowed\n");
3253 static DEVICE_ATTR(rts_ht_protection, S_IWUSR | S_IRUGO,
3254 show_rts_ht_protection, store_rts_ht_protection);
3257 /*****************************************************************************
3259 * driver setup and teardown
3261 *****************************************************************************/
3263 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3265 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3267 init_waitqueue_head(&priv->wait_command_queue);
3269 INIT_WORK(&priv->restart, iwl_bg_restart);
3270 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3271 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3272 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3273 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3274 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3276 iwl_setup_scan_deferred_work(priv);
3278 if (priv->cfg->ops->lib->setup_deferred_work)
3279 priv->cfg->ops->lib->setup_deferred_work(priv);
3281 init_timer(&priv->statistics_periodic);
3282 priv->statistics_periodic.data = (unsigned long)priv;
3283 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3285 init_timer(&priv->ucode_trace);
3286 priv->ucode_trace.data = (unsigned long)priv;
3287 priv->ucode_trace.function = iwl_bg_ucode_trace;
3289 if (priv->cfg->ops->lib->recover_from_tx_stall) {
3290 init_timer(&priv->monitor_recover);
3291 priv->monitor_recover.data = (unsigned long)priv;
3292 priv->monitor_recover.function =
3293 priv->cfg->ops->lib->recover_from_tx_stall;
3296 if (!priv->cfg->use_isr_legacy)
3297 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3298 iwl_irq_tasklet, (unsigned long)priv);
3300 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3301 iwl_irq_tasklet_legacy, (unsigned long)priv);
3304 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3306 if (priv->cfg->ops->lib->cancel_deferred_work)
3307 priv->cfg->ops->lib->cancel_deferred_work(priv);
3309 cancel_delayed_work_sync(&priv->init_alive_start);
3310 cancel_delayed_work(&priv->scan_check);
3311 cancel_delayed_work(&priv->alive_start);
3312 cancel_work_sync(&priv->beacon_update);
3313 del_timer_sync(&priv->statistics_periodic);
3314 del_timer_sync(&priv->ucode_trace);
3315 if (priv->cfg->ops->lib->recover_from_tx_stall)
3316 del_timer_sync(&priv->monitor_recover);
3319 static void iwl_init_hw_rates(struct iwl_priv *priv,
3320 struct ieee80211_rate *rates)
3324 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3325 rates[i].bitrate = iwl_rates[i].ieee * 5;
3326 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3327 rates[i].hw_value_short = i;
3329 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3331 * If CCK != 1M then set short preamble rate flag.
3334 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3335 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3340 static int iwl_init_drv(struct iwl_priv *priv)
3344 priv->ibss_beacon = NULL;
3346 spin_lock_init(&priv->sta_lock);
3347 spin_lock_init(&priv->hcmd_lock);
3349 INIT_LIST_HEAD(&priv->free_frames);
3351 mutex_init(&priv->mutex);
3352 mutex_init(&priv->sync_cmd_mutex);
3354 priv->ieee_channels = NULL;
3355 priv->ieee_rates = NULL;
3356 priv->band = IEEE80211_BAND_2GHZ;
3358 priv->iw_mode = NL80211_IFTYPE_STATION;
3359 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3360 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3361 priv->_agn.agg_tids_count = 0;
3363 /* initialize force reset */
3364 priv->force_reset[IWL_RF_RESET].reset_duration =
3365 IWL_DELAY_NEXT_FORCE_RF_RESET;
3366 priv->force_reset[IWL_FW_RESET].reset_duration =
3367 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3369 /* Choose which receivers/antennas to use */
3370 if (priv->cfg->ops->hcmd->set_rxon_chain)
3371 priv->cfg->ops->hcmd->set_rxon_chain(priv);
3373 iwl_init_scan_params(priv);
3375 /* Set the tx_power_user_lmt to the lowest power level
3376 * this value will get overwritten by channel max power avg
3378 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
3380 ret = iwl_init_channel_map(priv);
3382 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3386 ret = iwlcore_init_geos(priv);
3388 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3389 goto err_free_channel_map;
3391 iwl_init_hw_rates(priv, priv->ieee_rates);
3395 err_free_channel_map:
3396 iwl_free_channel_map(priv);
3401 static void iwl_uninit_drv(struct iwl_priv *priv)
3403 iwl_calib_free_results(priv);
3404 iwlcore_free_geos(priv);
3405 iwl_free_channel_map(priv);
3409 static struct attribute *iwl_sysfs_entries[] = {
3410 &dev_attr_statistics.attr,
3411 &dev_attr_temperature.attr,
3412 &dev_attr_tx_power.attr,
3413 &dev_attr_rts_ht_protection.attr,
3414 #ifdef CONFIG_IWLWIFI_DEBUG
3415 &dev_attr_debug_level.attr,
3420 static struct attribute_group iwl_attribute_group = {
3421 .name = NULL, /* put in device directory */
3422 .attrs = iwl_sysfs_entries,
3425 static struct ieee80211_ops iwl_hw_ops = {
3427 .start = iwl_mac_start,
3428 .stop = iwl_mac_stop,
3429 .add_interface = iwl_mac_add_interface,
3430 .remove_interface = iwl_mac_remove_interface,
3431 .config = iwl_mac_config,
3432 .configure_filter = iwl_configure_filter,
3433 .set_key = iwl_mac_set_key,
3434 .update_tkip_key = iwl_mac_update_tkip_key,
3435 .get_stats = iwl_mac_get_stats,
3436 .conf_tx = iwl_mac_conf_tx,
3437 .reset_tsf = iwl_mac_reset_tsf,
3438 .bss_info_changed = iwl_bss_info_changed,
3439 .ampdu_action = iwl_mac_ampdu_action,
3440 .hw_scan = iwl_mac_hw_scan,
3441 .sta_notify = iwl_mac_sta_notify,
3442 .sta_add = iwlagn_mac_sta_add,
3443 .sta_remove = iwl_mac_sta_remove,
3446 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3449 struct iwl_priv *priv;
3450 struct ieee80211_hw *hw;
3451 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3452 unsigned long flags;
3455 /************************
3456 * 1. Allocating HW data
3457 ************************/
3459 /* Disabling hardware scan means that mac80211 will perform scans
3460 * "the hard way", rather than using device's scan. */
3461 if (cfg->mod_params->disable_hw_scan) {
3462 if (iwl_debug_level & IWL_DL_INFO)
3463 dev_printk(KERN_DEBUG, &(pdev->dev),
3464 "Disabling hw_scan\n");
3465 iwl_hw_ops.hw_scan = NULL;
3468 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3474 /* At this point both hw and priv are allocated. */
3476 SET_IEEE80211_DEV(hw, &pdev->dev);
3478 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3480 priv->pci_dev = pdev;
3481 priv->inta_mask = CSR_INI_SET_MASK;
3483 #ifdef CONFIG_IWLWIFI_DEBUG
3484 atomic_set(&priv->restrict_refcnt, 0);
3486 if (iwl_alloc_traffic_mem(priv))
3487 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3489 /**************************
3490 * 2. Initializing PCI bus
3491 **************************/
3492 if (pci_enable_device(pdev)) {
3494 goto out_ieee80211_free_hw;
3497 pci_set_master(pdev);
3499 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3501 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3503 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3505 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3506 /* both attempts failed: */
3508 IWL_WARN(priv, "No suitable DMA available.\n");
3509 goto out_pci_disable_device;
3513 err = pci_request_regions(pdev, DRV_NAME);
3515 goto out_pci_disable_device;
3517 pci_set_drvdata(pdev, priv);
3520 /***********************
3521 * 3. Read REV register
3522 ***********************/
3523 priv->hw_base = pci_iomap(pdev, 0, 0);
3524 if (!priv->hw_base) {
3526 goto out_pci_release_regions;
3529 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3530 (unsigned long long) pci_resource_len(pdev, 0));
3531 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3533 /* these spin locks will be used in apm_ops.init and EEPROM access
3534 * we should init now
3536 spin_lock_init(&priv->reg_lock);
3537 spin_lock_init(&priv->lock);
3540 * stop and reset the on-board processor just in case it is in a
3541 * strange state ... like being left stranded by a primary kernel
3542 * and this is now the kdump kernel trying to start up
3544 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3546 iwl_hw_detect(priv);
3547 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3548 priv->cfg->name, priv->hw_rev);
3550 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3551 * PCI Tx retries from interfering with C3 CPU state */
3552 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3554 iwl_prepare_card_hw(priv);
3555 if (!priv->hw_ready) {
3556 IWL_WARN(priv, "Failed, HW not ready\n");
3563 /* Read the EEPROM */
3564 err = iwl_eeprom_init(priv);
3566 IWL_ERR(priv, "Unable to init EEPROM\n");
3569 err = iwl_eeprom_check_version(priv);
3571 goto out_free_eeprom;
3573 /* extract MAC Address */
3574 iwl_eeprom_get_mac(priv, priv->mac_addr);
3575 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3576 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3578 /************************
3579 * 5. Setup HW constants
3580 ************************/
3581 if (iwl_set_hw_params(priv)) {
3582 IWL_ERR(priv, "failed to set hw parameters\n");
3583 goto out_free_eeprom;
3586 /*******************
3588 *******************/
3590 err = iwl_init_drv(priv);
3592 goto out_free_eeprom;
3593 /* At this point both hw and priv are initialized. */
3595 /********************
3597 ********************/
3598 spin_lock_irqsave(&priv->lock, flags);
3599 iwl_disable_interrupts(priv);
3600 spin_unlock_irqrestore(&priv->lock, flags);
3602 pci_enable_msi(priv->pci_dev);
3604 iwl_alloc_isr_ict(priv);
3605 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
3606 IRQF_SHARED, DRV_NAME, priv);
3608 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3609 goto out_disable_msi;
3611 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3613 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3617 iwl_setup_deferred_work(priv);
3618 iwl_setup_rx_handlers(priv);
3620 /*********************************************
3621 * 8. Enable interrupts and read RFKILL state
3622 *********************************************/
3624 /* enable interrupts if needed: hw bug w/a */
3625 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3626 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3627 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3628 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3631 iwl_enable_interrupts(priv);
3633 /* If platform's RF_KILL switch is NOT set to KILL */
3634 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3635 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3637 set_bit(STATUS_RF_KILL_HW, &priv->status);
3639 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3640 test_bit(STATUS_RF_KILL_HW, &priv->status));
3642 iwl_power_initialize(priv);
3643 iwl_tt_initialize(priv);
3645 err = iwl_request_firmware(priv, true);
3647 goto out_remove_sysfs;
3652 destroy_workqueue(priv->workqueue);
3653 priv->workqueue = NULL;
3654 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3656 free_irq(priv->pci_dev->irq, priv);
3657 iwl_free_isr_ict(priv);
3659 pci_disable_msi(priv->pci_dev);
3660 iwl_uninit_drv(priv);
3662 iwl_eeprom_free(priv);
3664 pci_iounmap(pdev, priv->hw_base);
3665 out_pci_release_regions:
3666 pci_set_drvdata(pdev, NULL);
3667 pci_release_regions(pdev);
3668 out_pci_disable_device:
3669 pci_disable_device(pdev);
3670 out_ieee80211_free_hw:
3671 iwl_free_traffic_mem(priv);
3672 ieee80211_free_hw(priv->hw);
3677 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3679 struct iwl_priv *priv = pci_get_drvdata(pdev);
3680 unsigned long flags;
3685 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3687 iwl_dbgfs_unregister(priv);
3688 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3690 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3691 * to be called and iwl_down since we are removing the device
3692 * we need to set STATUS_EXIT_PENDING bit.
3694 set_bit(STATUS_EXIT_PENDING, &priv->status);
3695 if (priv->mac80211_registered) {
3696 ieee80211_unregister_hw(priv->hw);
3697 priv->mac80211_registered = 0;
3703 * Make sure device is reset to low power before unloading driver.
3704 * This may be redundant with iwl_down(), but there are paths to
3705 * run iwl_down() without calling apm_ops.stop(), and there are
3706 * paths to avoid running iwl_down() at all before leaving driver.
3707 * This (inexpensive) call *makes sure* device is reset.
3709 priv->cfg->ops->lib->apm_ops.stop(priv);
3713 /* make sure we flush any pending irq or
3714 * tasklet for the driver
3716 spin_lock_irqsave(&priv->lock, flags);
3717 iwl_disable_interrupts(priv);
3718 spin_unlock_irqrestore(&priv->lock, flags);
3720 iwl_synchronize_irq(priv);
3722 iwl_dealloc_ucode_pci(priv);
3725 iwlagn_rx_queue_free(priv, &priv->rxq);
3726 iwlagn_hw_txq_ctx_free(priv);
3728 iwl_eeprom_free(priv);
3731 /*netif_stop_queue(dev); */
3732 flush_workqueue(priv->workqueue);
3734 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3735 * priv->workqueue... so we can't take down the workqueue
3737 destroy_workqueue(priv->workqueue);
3738 priv->workqueue = NULL;
3739 iwl_free_traffic_mem(priv);
3741 free_irq(priv->pci_dev->irq, priv);
3742 pci_disable_msi(priv->pci_dev);
3743 pci_iounmap(pdev, priv->hw_base);
3744 pci_release_regions(pdev);
3745 pci_disable_device(pdev);
3746 pci_set_drvdata(pdev, NULL);
3748 iwl_uninit_drv(priv);
3750 iwl_free_isr_ict(priv);
3752 if (priv->ibss_beacon)
3753 dev_kfree_skb(priv->ibss_beacon);
3755 ieee80211_free_hw(priv->hw);
3759 /*****************************************************************************
3761 * driver and module entry point
3763 *****************************************************************************/
3765 /* Hardware specific file defines the PCI IDs table for that hardware module */
3766 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
3767 #ifdef CONFIG_IWL4965
3768 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3769 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3770 #endif /* CONFIG_IWL4965 */
3771 #ifdef CONFIG_IWL5000
3772 /* 5100 Series WiFi */
3773 {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
3774 {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
3775 {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
3776 {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
3777 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
3778 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
3779 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
3780 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
3781 {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
3782 {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
3783 {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
3784 {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
3785 {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
3786 {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
3787 {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
3788 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
3789 {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
3790 {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
3791 {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
3792 {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
3793 {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
3794 {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
3795 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
3796 {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
3798 /* 5300 Series WiFi */
3799 {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
3800 {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
3801 {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
3802 {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
3803 {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
3804 {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
3805 {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
3806 {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
3807 {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
3808 {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
3809 {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
3810 {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
3812 /* 5350 Series WiFi/WiMax */
3813 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
3814 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
3815 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
3817 /* 5150 Series Wifi/WiMax */
3818 {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
3819 {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
3820 {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
3821 {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
3822 {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
3823 {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
3825 {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
3826 {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
3827 {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
3828 {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
3831 {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
3832 {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
3833 {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
3834 {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
3835 {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
3836 {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
3837 {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
3838 {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
3839 {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
3840 {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
3841 {IWL_PCI_DEVICE(0x0082, 0x1201, iwl6000i_g2_2agn_cfg)},
3843 /* 6x50 WiFi/WiMax Series */
3844 {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
3845 {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
3846 {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
3847 {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
3848 {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
3849 {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
3851 /* 1000 Series WiFi */
3852 {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
3853 {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
3854 {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
3855 {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
3856 {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
3857 {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
3858 {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
3859 {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
3860 {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
3861 {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
3862 {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
3863 {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
3864 #endif /* CONFIG_IWL5000 */
3868 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3870 static struct pci_driver iwl_driver = {
3872 .id_table = iwl_hw_card_ids,
3873 .probe = iwl_pci_probe,
3874 .remove = __devexit_p(iwl_pci_remove),
3876 .suspend = iwl_pci_suspend,
3877 .resume = iwl_pci_resume,
3881 static int __init iwl_init(void)
3885 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3886 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3888 ret = iwlagn_rate_control_register();
3890 printk(KERN_ERR DRV_NAME
3891 "Unable to register rate control algorithm: %d\n", ret);
3895 ret = pci_register_driver(&iwl_driver);
3897 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3898 goto error_register;
3904 iwlagn_rate_control_unregister();
3908 static void __exit iwl_exit(void)
3910 pci_unregister_driver(&iwl_driver);
3911 iwlagn_rate_control_unregister();
3914 module_exit(iwl_exit);
3915 module_init(iwl_init);
3917 #ifdef CONFIG_IWLWIFI_DEBUG
3918 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
3919 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
3920 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3921 MODULE_PARM_DESC(debug, "debug output mask");
3924 module_param_named(swcrypto50, iwlagn_mod_params.sw_crypto, bool, S_IRUGO);
3925 MODULE_PARM_DESC(swcrypto50,
3926 "using crypto in software (default 0 [hardware]) (deprecated)");
3927 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3928 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3929 module_param_named(queues_num50,
3930 iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3931 MODULE_PARM_DESC(queues_num50,
3932 "number of hw queues in 50xx series (deprecated)");
3933 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3934 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3935 module_param_named(11n_disable50, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3936 MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality (deprecated)");
3937 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3938 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3939 module_param_named(amsdu_size_8K50, iwlagn_mod_params.amsdu_size_8K,
3941 MODULE_PARM_DESC(amsdu_size_8K50,
3942 "enable 8K amsdu size in 50XX series (deprecated)");
3943 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3945 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3946 module_param_named(fw_restart50, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3947 MODULE_PARM_DESC(fw_restart50,
3948 "restart firmware in case of error (deprecated)");
3949 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3950 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3952 disable_hw_scan, iwlagn_mod_params.disable_hw_scan, int, S_IRUGO);
3953 MODULE_PARM_DESC(disable_hw_scan, "disable hardware scanning (default 0)");