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"
59 /******************************************************************************
63 ******************************************************************************/
66 * module name, copyright, version, etc.
68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
70 #ifdef CONFIG_IWLWIFI_DEBUG
76 #define DRV_VERSION IWLWIFI_VERSION VD
79 MODULE_DESCRIPTION(DRV_DESCRIPTION);
80 MODULE_VERSION(DRV_VERSION);
81 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
82 MODULE_LICENSE("GPL");
83 MODULE_ALIAS("iwl4965");
85 /*************** STATION TABLE MANAGEMENT ****
86 * mac80211 should be examined to determine if sta_info is duplicating
87 * the functionality provided here
90 /**************************************************************/
93 * iwl_commit_rxon - commit staging_rxon to hardware
95 * The RXON command in staging_rxon is committed to the hardware and
96 * the active_rxon structure is updated with the new data. This
97 * function correctly transitions out of the RXON_ASSOC_MSK state if
98 * a HW tune is required based on the RXON structure changes.
100 int iwl_commit_rxon(struct iwl_priv *priv)
102 /* cast away the const for active_rxon in this function */
103 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
106 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
108 if (!iwl_is_alive(priv))
111 /* always get timestamp with Rx frame */
112 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
114 ret = iwl_check_rxon_cmd(priv);
116 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
121 * receive commit_rxon request
122 * abort any previous channel switch if still in process
124 if (priv->switch_rxon.switch_in_progress &&
125 (priv->switch_rxon.channel != priv->staging_rxon.channel)) {
126 IWL_DEBUG_11H(priv, "abort channel switch on %d\n",
127 le16_to_cpu(priv->switch_rxon.channel));
128 priv->switch_rxon.switch_in_progress = false;
131 /* If we don't need to send a full RXON, we can use
132 * iwl_rxon_assoc_cmd which is used to reconfigure filter
133 * and other flags for the current radio configuration. */
134 if (!iwl_full_rxon_required(priv)) {
135 ret = iwl_send_rxon_assoc(priv);
137 IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
141 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
142 iwl_print_rx_config_cmd(priv);
146 /* station table will be cleared */
147 priv->assoc_station_added = 0;
149 /* If we are currently associated and the new config requires
150 * an RXON_ASSOC and the new config wants the associated mask enabled,
151 * we must clear the associated from the active configuration
152 * before we apply the new config */
153 if (iwl_is_associated(priv) && new_assoc) {
154 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
155 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
157 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
158 sizeof(struct iwl_rxon_cmd),
161 /* If the mask clearing failed then we set
162 * active_rxon back to what it was previously */
164 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
165 IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
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, send it before
182 * we add the bcast station. If assoc bit is set, we will send RXON
183 * after having added the bcast and bssid station.
186 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
187 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
189 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
192 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
195 iwl_clear_stations_table(priv);
197 priv->start_calib = 0;
199 /* Add the broadcast address so we can send broadcast frames */
200 priv->cfg->ops->lib->add_bcast_station(priv);
203 /* If we have set the ASSOC_MSK and we are in BSS mode then
204 * add the IWL_AP_ID to the station rate table */
206 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
207 ret = iwl_rxon_add_station(priv,
208 priv->active_rxon.bssid_addr, 1);
209 if (ret == IWL_INVALID_STATION) {
211 "Error adding AP address for TX.\n");
214 priv->assoc_station_added = 1;
215 if (priv->default_wep_key &&
216 iwl_send_static_wepkey_cmd(priv, 0))
218 "Could not send WEP static key.\n");
222 * allow CTS-to-self if possible for new association.
223 * this is relevant only for 5000 series and up,
224 * but will not damage 4965
226 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
228 /* Apply the new configuration
229 * RXON assoc doesn't clear the station table in uCode,
231 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
232 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
234 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
237 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
239 iwl_print_rx_config_cmd(priv);
241 iwl_init_sensitivity(priv);
243 /* If we issue a new RXON command which required a tune then we must
244 * send a new TXPOWER command or we won't be able to Tx any frames */
245 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
247 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
254 void iwl_update_chain_flags(struct iwl_priv *priv)
257 if (priv->cfg->ops->hcmd->set_rxon_chain)
258 priv->cfg->ops->hcmd->set_rxon_chain(priv);
259 iwlcore_commit_rxon(priv);
262 static void iwl_clear_free_frames(struct iwl_priv *priv)
264 struct list_head *element;
266 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
269 while (!list_empty(&priv->free_frames)) {
270 element = priv->free_frames.next;
272 kfree(list_entry(element, struct iwl_frame, list));
273 priv->frames_count--;
276 if (priv->frames_count) {
277 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
279 priv->frames_count = 0;
283 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
285 struct iwl_frame *frame;
286 struct list_head *element;
287 if (list_empty(&priv->free_frames)) {
288 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
290 IWL_ERR(priv, "Could not allocate frame!\n");
294 priv->frames_count++;
298 element = priv->free_frames.next;
300 return list_entry(element, struct iwl_frame, list);
303 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
305 memset(frame, 0, sizeof(*frame));
306 list_add(&frame->list, &priv->free_frames);
309 static u32 iwl_fill_beacon_frame(struct iwl_priv *priv,
310 struct ieee80211_hdr *hdr,
313 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
314 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
315 (priv->iw_mode != NL80211_IFTYPE_AP)))
318 if (priv->ibss_beacon->len > left)
321 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
323 return priv->ibss_beacon->len;
326 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
327 static void iwl_set_beacon_tim(struct iwl_priv *priv,
328 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
329 u8 *beacon, u32 frame_size)
332 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
335 * The index is relative to frame start but we start looking at the
336 * variable-length part of the beacon.
338 tim_idx = mgmt->u.beacon.variable - beacon;
340 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
341 while ((tim_idx < (frame_size - 2)) &&
342 (beacon[tim_idx] != WLAN_EID_TIM))
343 tim_idx += beacon[tim_idx+1] + 2;
345 /* If TIM field was found, set variables */
346 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
347 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
348 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
350 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
353 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
354 struct iwl_frame *frame)
356 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
361 * We have to set up the TX command, the TX Beacon command, and the
365 /* Initialize memory */
366 tx_beacon_cmd = &frame->u.beacon;
367 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
369 /* Set up TX beacon contents */
370 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
371 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
372 if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
375 /* Set up TX command fields */
376 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
377 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
378 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
379 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
380 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
382 /* Set up TX beacon command fields */
383 iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
386 /* Set up packet rate and flags */
387 rate = iwl_rate_get_lowest_plcp(priv);
388 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant);
389 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
390 if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
391 rate_flags |= RATE_MCS_CCK_MSK;
392 tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
395 return sizeof(*tx_beacon_cmd) + frame_size;
397 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
399 struct iwl_frame *frame;
400 unsigned int frame_size;
403 frame = iwl_get_free_frame(priv);
405 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
410 frame_size = iwl_hw_get_beacon_cmd(priv, frame);
412 IWL_ERR(priv, "Error configuring the beacon command\n");
413 iwl_free_frame(priv, frame);
417 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
420 iwl_free_frame(priv, frame);
425 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
427 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
429 dma_addr_t addr = get_unaligned_le32(&tb->lo);
430 if (sizeof(dma_addr_t) > sizeof(u32))
432 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
437 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
439 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
441 return le16_to_cpu(tb->hi_n_len) >> 4;
444 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
445 dma_addr_t addr, u16 len)
447 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
448 u16 hi_n_len = len << 4;
450 put_unaligned_le32(addr, &tb->lo);
451 if (sizeof(dma_addr_t) > sizeof(u32))
452 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
454 tb->hi_n_len = cpu_to_le16(hi_n_len);
456 tfd->num_tbs = idx + 1;
459 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
461 return tfd->num_tbs & 0x1f;
465 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
466 * @priv - driver private data
469 * Does NOT advance any TFD circular buffer read/write indexes
470 * Does NOT free the TFD itself (which is within circular buffer)
472 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
474 struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
476 struct pci_dev *dev = priv->pci_dev;
477 int index = txq->q.read_ptr;
481 tfd = &tfd_tmp[index];
483 /* Sanity check on number of chunks */
484 num_tbs = iwl_tfd_get_num_tbs(tfd);
486 if (num_tbs >= IWL_NUM_OF_TBS) {
487 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
488 /* @todo issue fatal error, it is quite serious situation */
494 pci_unmap_single(dev,
495 pci_unmap_addr(&txq->meta[index], mapping),
496 pci_unmap_len(&txq->meta[index], len),
497 PCI_DMA_BIDIRECTIONAL);
499 /* Unmap chunks, if any. */
500 for (i = 1; i < num_tbs; i++) {
501 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
502 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
505 dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
506 txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
511 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
512 struct iwl_tx_queue *txq,
513 dma_addr_t addr, u16 len,
517 struct iwl_tfd *tfd, *tfd_tmp;
521 tfd_tmp = (struct iwl_tfd *)txq->tfds;
522 tfd = &tfd_tmp[q->write_ptr];
525 memset(tfd, 0, sizeof(*tfd));
527 num_tbs = iwl_tfd_get_num_tbs(tfd);
529 /* Each TFD can point to a maximum 20 Tx buffers */
530 if (num_tbs >= IWL_NUM_OF_TBS) {
531 IWL_ERR(priv, "Error can not send more than %d chunks\n",
536 BUG_ON(addr & ~DMA_BIT_MASK(36));
537 if (unlikely(addr & ~IWL_TX_DMA_MASK))
538 IWL_ERR(priv, "Unaligned address = %llx\n",
539 (unsigned long long)addr);
541 iwl_tfd_set_tb(tfd, num_tbs, addr, len);
547 * Tell nic where to find circular buffer of Tx Frame Descriptors for
548 * given Tx queue, and enable the DMA channel used for that queue.
550 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
551 * channels supported in hardware.
553 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
554 struct iwl_tx_queue *txq)
556 int txq_id = txq->q.id;
558 /* Circular buffer (TFD queue in DRAM) physical base address */
559 iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
560 txq->q.dma_addr >> 8);
565 /******************************************************************************
567 * Generic RX handler implementations
569 ******************************************************************************/
570 static void iwl_rx_reply_alive(struct iwl_priv *priv,
571 struct iwl_rx_mem_buffer *rxb)
573 struct iwl_rx_packet *pkt = rxb_addr(rxb);
574 struct iwl_alive_resp *palive;
575 struct delayed_work *pwork;
577 palive = &pkt->u.alive_frame;
579 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
581 palive->is_valid, palive->ver_type,
582 palive->ver_subtype);
584 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
585 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
586 memcpy(&priv->card_alive_init,
588 sizeof(struct iwl_init_alive_resp));
589 pwork = &priv->init_alive_start;
591 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
592 memcpy(&priv->card_alive, &pkt->u.alive_frame,
593 sizeof(struct iwl_alive_resp));
594 pwork = &priv->alive_start;
597 /* We delay the ALIVE response by 5ms to
598 * give the HW RF Kill time to activate... */
599 if (palive->is_valid == UCODE_VALID_OK)
600 queue_delayed_work(priv->workqueue, pwork,
601 msecs_to_jiffies(5));
603 IWL_WARN(priv, "uCode did not respond OK.\n");
606 static void iwl_bg_beacon_update(struct work_struct *work)
608 struct iwl_priv *priv =
609 container_of(work, struct iwl_priv, beacon_update);
610 struct sk_buff *beacon;
612 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
613 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
616 IWL_ERR(priv, "update beacon failed\n");
620 mutex_lock(&priv->mutex);
621 /* new beacon skb is allocated every time; dispose previous.*/
622 if (priv->ibss_beacon)
623 dev_kfree_skb(priv->ibss_beacon);
625 priv->ibss_beacon = beacon;
626 mutex_unlock(&priv->mutex);
628 iwl_send_beacon_cmd(priv);
632 * iwl_bg_statistics_periodic - Timer callback to queue statistics
634 * This callback is provided in order to send a statistics request.
636 * This timer function is continually reset to execute within
637 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
638 * was received. We need to ensure we receive the statistics in order
639 * to update the temperature used for calibrating the TXPOWER.
641 static void iwl_bg_statistics_periodic(unsigned long data)
643 struct iwl_priv *priv = (struct iwl_priv *)data;
645 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
648 /* dont send host command if rf-kill is on */
649 if (!iwl_is_ready_rf(priv))
652 iwl_send_statistics_request(priv, CMD_ASYNC, false);
656 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
657 u32 start_idx, u32 num_events,
661 u32 ptr; /* SRAM byte address of log data */
662 u32 ev, time, data; /* event log data */
663 unsigned long reg_flags;
666 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
668 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
670 /* Make sure device is powered up for SRAM reads */
671 spin_lock_irqsave(&priv->reg_lock, reg_flags);
672 if (iwl_grab_nic_access(priv)) {
673 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
677 /* Set starting address; reads will auto-increment */
678 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
682 * "time" is actually "data" for mode 0 (no timestamp).
683 * place event id # at far right for easier visual parsing.
685 for (i = 0; i < num_events; i++) {
686 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
687 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
689 trace_iwlwifi_dev_ucode_cont_event(priv,
692 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
693 trace_iwlwifi_dev_ucode_cont_event(priv,
697 /* Allow device to power down */
698 iwl_release_nic_access(priv);
699 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
702 static void iwl_continuous_event_trace(struct iwl_priv *priv)
704 u32 capacity; /* event log capacity in # entries */
705 u32 base; /* SRAM byte address of event log header */
706 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
707 u32 num_wraps; /* # times uCode wrapped to top of log */
708 u32 next_entry; /* index of next entry to be written by uCode */
710 if (priv->ucode_type == UCODE_INIT)
711 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
713 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
714 if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
715 capacity = iwl_read_targ_mem(priv, base);
716 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
717 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
718 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
722 if (num_wraps == priv->event_log.num_wraps) {
723 iwl_print_cont_event_trace(priv,
724 base, priv->event_log.next_entry,
725 next_entry - priv->event_log.next_entry,
727 priv->event_log.non_wraps_count++;
729 if ((num_wraps - priv->event_log.num_wraps) > 1)
730 priv->event_log.wraps_more_count++;
732 priv->event_log.wraps_once_count++;
733 trace_iwlwifi_dev_ucode_wrap_event(priv,
734 num_wraps - priv->event_log.num_wraps,
735 next_entry, priv->event_log.next_entry);
736 if (next_entry < priv->event_log.next_entry) {
737 iwl_print_cont_event_trace(priv, base,
738 priv->event_log.next_entry,
739 capacity - priv->event_log.next_entry,
742 iwl_print_cont_event_trace(priv, base, 0,
745 iwl_print_cont_event_trace(priv, base,
746 next_entry, capacity - next_entry,
749 iwl_print_cont_event_trace(priv, base, 0,
753 priv->event_log.num_wraps = num_wraps;
754 priv->event_log.next_entry = next_entry;
758 * iwl_bg_ucode_trace - Timer callback to log ucode event
760 * The timer is continually set to execute every
761 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
762 * this function is to perform continuous uCode event logging operation
765 static void iwl_bg_ucode_trace(unsigned long data)
767 struct iwl_priv *priv = (struct iwl_priv *)data;
769 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
772 if (priv->event_log.ucode_trace) {
773 iwl_continuous_event_trace(priv);
774 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
775 mod_timer(&priv->ucode_trace,
776 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
780 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
781 struct iwl_rx_mem_buffer *rxb)
783 #ifdef CONFIG_IWLWIFI_DEBUG
784 struct iwl_rx_packet *pkt = rxb_addr(rxb);
785 struct iwl4965_beacon_notif *beacon =
786 (struct iwl4965_beacon_notif *)pkt->u.raw;
787 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
789 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
790 "tsf %d %d rate %d\n",
791 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
792 beacon->beacon_notify_hdr.failure_frame,
793 le32_to_cpu(beacon->ibss_mgr_status),
794 le32_to_cpu(beacon->high_tsf),
795 le32_to_cpu(beacon->low_tsf), rate);
798 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
799 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
800 queue_work(priv->workqueue, &priv->beacon_update);
803 /* Handle notification from uCode that card's power state is changing
804 * due to software, hardware, or critical temperature RFKILL */
805 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
806 struct iwl_rx_mem_buffer *rxb)
808 struct iwl_rx_packet *pkt = rxb_addr(rxb);
809 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
810 unsigned long status = priv->status;
812 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
813 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
814 (flags & SW_CARD_DISABLED) ? "Kill" : "On",
815 (flags & CT_CARD_DISABLED) ?
816 "Reached" : "Not reached");
818 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
821 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
822 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
824 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
825 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
827 if (!(flags & RXON_CARD_DISABLED)) {
828 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
829 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
830 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
831 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
833 if (flags & CT_CARD_DISABLED)
834 iwl_tt_enter_ct_kill(priv);
836 if (!(flags & CT_CARD_DISABLED))
837 iwl_tt_exit_ct_kill(priv);
839 if (flags & HW_CARD_DISABLED)
840 set_bit(STATUS_RF_KILL_HW, &priv->status);
842 clear_bit(STATUS_RF_KILL_HW, &priv->status);
845 if (!(flags & RXON_CARD_DISABLED))
846 iwl_scan_cancel(priv);
848 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
849 test_bit(STATUS_RF_KILL_HW, &priv->status)))
850 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
851 test_bit(STATUS_RF_KILL_HW, &priv->status));
853 wake_up_interruptible(&priv->wait_command_queue);
856 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
858 if (src == IWL_PWR_SRC_VAUX) {
859 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
860 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
861 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
862 ~APMG_PS_CTRL_MSK_PWR_SRC);
864 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
865 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
866 ~APMG_PS_CTRL_MSK_PWR_SRC);
873 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
875 * Setup the RX handlers for each of the reply types sent from the uCode
878 * This function chains into the hardware specific files for them to setup
879 * any hardware specific handlers as well.
881 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
883 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
884 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
885 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
886 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
887 iwl_rx_spectrum_measure_notif;
888 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
889 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
890 iwl_rx_pm_debug_statistics_notif;
891 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
894 * The same handler is used for both the REPLY to a discrete
895 * statistics request from the host as well as for the periodic
896 * statistics notifications (after received beacons) from the uCode.
898 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
899 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
901 iwl_setup_rx_scan_handlers(priv);
903 /* status change handler */
904 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
906 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
907 iwl_rx_missed_beacon_notif;
909 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
910 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
912 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
913 /* Set up hardware specific Rx handlers */
914 priv->cfg->ops->lib->rx_handler_setup(priv);
918 * iwl_rx_handle - Main entry function for receiving responses from uCode
920 * Uses the priv->rx_handlers callback function array to invoke
921 * the appropriate handlers, including command responses,
922 * frame-received notifications, and other notifications.
924 void iwl_rx_handle(struct iwl_priv *priv)
926 struct iwl_rx_mem_buffer *rxb;
927 struct iwl_rx_packet *pkt;
928 struct iwl_rx_queue *rxq = &priv->rxq;
936 /* uCode's read index (stored in shared DRAM) indicates the last Rx
937 * buffer that the driver may process (last buffer filled by ucode). */
938 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
941 /* Rx interrupt, but nothing sent from uCode */
943 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
945 /* calculate total frames need to be restock after handling RX */
946 total_empty = r - rxq->write_actual;
948 total_empty += RX_QUEUE_SIZE;
950 if (total_empty > (RX_QUEUE_SIZE / 2))
956 /* If an RXB doesn't have a Rx queue slot associated with it,
957 * then a bug has been introduced in the queue refilling
958 * routines -- catch it here */
961 rxq->queue[i] = NULL;
963 pci_unmap_page(priv->pci_dev, rxb->page_dma,
964 PAGE_SIZE << priv->hw_params.rx_page_order,
968 trace_iwlwifi_dev_rx(priv, pkt,
969 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
971 /* Reclaim a command buffer only if this packet is a response
972 * to a (driver-originated) command.
973 * If the packet (e.g. Rx frame) originated from uCode,
974 * there is no command buffer to reclaim.
975 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
976 * but apparently a few don't get set; catch them here. */
977 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
978 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
979 (pkt->hdr.cmd != REPLY_RX) &&
980 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
981 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
982 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
983 (pkt->hdr.cmd != REPLY_TX);
985 /* Based on type of command response or notification,
986 * handle those that need handling via function in
987 * rx_handlers table. See iwl_setup_rx_handlers() */
988 if (priv->rx_handlers[pkt->hdr.cmd]) {
989 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
990 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
991 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
992 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
994 /* No handling needed */
996 "r %d i %d No handler needed for %s, 0x%02x\n",
997 r, i, get_cmd_string(pkt->hdr.cmd),
1002 * XXX: After here, we should always check rxb->page
1003 * against NULL before touching it or its virtual
1004 * memory (pkt). Because some rx_handler might have
1005 * already taken or freed the pages.
1009 /* Invoke any callbacks, transfer the buffer to caller,
1010 * and fire off the (possibly) blocking iwl_send_cmd()
1011 * as we reclaim the driver command queue */
1013 iwl_tx_cmd_complete(priv, rxb);
1015 IWL_WARN(priv, "Claim null rxb?\n");
1018 /* Reuse the page if possible. For notification packets and
1019 * SKBs that fail to Rx correctly, add them back into the
1020 * rx_free list for reuse later. */
1021 spin_lock_irqsave(&rxq->lock, flags);
1022 if (rxb->page != NULL) {
1023 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
1024 0, PAGE_SIZE << priv->hw_params.rx_page_order,
1025 PCI_DMA_FROMDEVICE);
1026 list_add_tail(&rxb->list, &rxq->rx_free);
1029 list_add_tail(&rxb->list, &rxq->rx_used);
1031 spin_unlock_irqrestore(&rxq->lock, flags);
1033 i = (i + 1) & RX_QUEUE_MASK;
1034 /* If there are a lot of unused frames,
1035 * restock the Rx queue so ucode wont assert. */
1040 iwl_rx_replenish_now(priv);
1046 /* Backtrack one entry */
1049 iwl_rx_replenish_now(priv);
1051 iwl_rx_queue_restock(priv);
1054 /* call this function to flush any scheduled tasklet */
1055 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1057 /* wait to make sure we flush pending tasklet*/
1058 synchronize_irq(priv->pci_dev->irq);
1059 tasklet_kill(&priv->irq_tasklet);
1062 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
1064 u32 inta, handled = 0;
1066 unsigned long flags;
1068 #ifdef CONFIG_IWLWIFI_DEBUG
1072 spin_lock_irqsave(&priv->lock, flags);
1074 /* Ack/clear/reset pending uCode interrupts.
1075 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1076 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1077 inta = iwl_read32(priv, CSR_INT);
1078 iwl_write32(priv, CSR_INT, inta);
1080 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1081 * Any new interrupts that happen after this, either while we're
1082 * in this tasklet, or later, will show up in next ISR/tasklet. */
1083 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1084 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1086 #ifdef CONFIG_IWLWIFI_DEBUG
1087 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1088 /* just for debug */
1089 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1090 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1091 inta, inta_mask, inta_fh);
1095 spin_unlock_irqrestore(&priv->lock, flags);
1097 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1098 * atomic, make sure that inta covers all the interrupts that
1099 * we've discovered, even if FH interrupt came in just after
1100 * reading CSR_INT. */
1101 if (inta_fh & CSR49_FH_INT_RX_MASK)
1102 inta |= CSR_INT_BIT_FH_RX;
1103 if (inta_fh & CSR49_FH_INT_TX_MASK)
1104 inta |= CSR_INT_BIT_FH_TX;
1106 /* Now service all interrupt bits discovered above. */
1107 if (inta & CSR_INT_BIT_HW_ERR) {
1108 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1110 /* Tell the device to stop sending interrupts */
1111 iwl_disable_interrupts(priv);
1113 priv->isr_stats.hw++;
1114 iwl_irq_handle_error(priv);
1116 handled |= CSR_INT_BIT_HW_ERR;
1121 #ifdef CONFIG_IWLWIFI_DEBUG
1122 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1123 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1124 if (inta & CSR_INT_BIT_SCD) {
1125 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1126 "the frame/frames.\n");
1127 priv->isr_stats.sch++;
1130 /* Alive notification via Rx interrupt will do the real work */
1131 if (inta & CSR_INT_BIT_ALIVE) {
1132 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1133 priv->isr_stats.alive++;
1137 /* Safely ignore these bits for debug checks below */
1138 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1140 /* HW RF KILL switch toggled */
1141 if (inta & CSR_INT_BIT_RF_KILL) {
1143 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1144 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1147 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1148 hw_rf_kill ? "disable radio" : "enable radio");
1150 priv->isr_stats.rfkill++;
1152 /* driver only loads ucode once setting the interface up.
1153 * the driver allows loading the ucode even if the radio
1154 * is killed. Hence update the killswitch state here. The
1155 * rfkill handler will care about restarting if needed.
1157 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1159 set_bit(STATUS_RF_KILL_HW, &priv->status);
1161 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1162 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1165 handled |= CSR_INT_BIT_RF_KILL;
1168 /* Chip got too hot and stopped itself */
1169 if (inta & CSR_INT_BIT_CT_KILL) {
1170 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1171 priv->isr_stats.ctkill++;
1172 handled |= CSR_INT_BIT_CT_KILL;
1175 /* Error detected by uCode */
1176 if (inta & CSR_INT_BIT_SW_ERR) {
1177 IWL_ERR(priv, "Microcode SW error detected. "
1178 " Restarting 0x%X.\n", inta);
1179 priv->isr_stats.sw++;
1180 priv->isr_stats.sw_err = inta;
1181 iwl_irq_handle_error(priv);
1182 handled |= CSR_INT_BIT_SW_ERR;
1186 * uCode wakes up after power-down sleep.
1187 * Tell device about any new tx or host commands enqueued,
1188 * and about any Rx buffers made available while asleep.
1190 if (inta & CSR_INT_BIT_WAKEUP) {
1191 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1192 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1193 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1194 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1195 priv->isr_stats.wakeup++;
1196 handled |= CSR_INT_BIT_WAKEUP;
1199 /* All uCode command responses, including Tx command responses,
1200 * Rx "responses" (frame-received notification), and other
1201 * notifications from uCode come through here*/
1202 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1203 iwl_rx_handle(priv);
1204 priv->isr_stats.rx++;
1205 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1208 /* This "Tx" DMA channel is used only for loading uCode */
1209 if (inta & CSR_INT_BIT_FH_TX) {
1210 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1211 priv->isr_stats.tx++;
1212 handled |= CSR_INT_BIT_FH_TX;
1213 /* Wake up uCode load routine, now that load is complete */
1214 priv->ucode_write_complete = 1;
1215 wake_up_interruptible(&priv->wait_command_queue);
1218 if (inta & ~handled) {
1219 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1220 priv->isr_stats.unhandled++;
1223 if (inta & ~(priv->inta_mask)) {
1224 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1225 inta & ~priv->inta_mask);
1226 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1229 /* Re-enable all interrupts */
1230 /* only Re-enable if diabled by irq */
1231 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1232 iwl_enable_interrupts(priv);
1234 #ifdef CONFIG_IWLWIFI_DEBUG
1235 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1236 inta = iwl_read32(priv, CSR_INT);
1237 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1238 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1239 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1240 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1245 /* tasklet for iwlagn interrupt */
1246 static void iwl_irq_tasklet(struct iwl_priv *priv)
1250 unsigned long flags;
1252 #ifdef CONFIG_IWLWIFI_DEBUG
1256 spin_lock_irqsave(&priv->lock, flags);
1258 /* Ack/clear/reset pending uCode interrupts.
1259 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1261 iwl_write32(priv, CSR_INT, priv->inta);
1265 #ifdef CONFIG_IWLWIFI_DEBUG
1266 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1267 /* just for debug */
1268 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1269 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1274 spin_unlock_irqrestore(&priv->lock, flags);
1276 /* saved interrupt in inta variable now we can reset priv->inta */
1279 /* Now service all interrupt bits discovered above. */
1280 if (inta & CSR_INT_BIT_HW_ERR) {
1281 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1283 /* Tell the device to stop sending interrupts */
1284 iwl_disable_interrupts(priv);
1286 priv->isr_stats.hw++;
1287 iwl_irq_handle_error(priv);
1289 handled |= CSR_INT_BIT_HW_ERR;
1294 #ifdef CONFIG_IWLWIFI_DEBUG
1295 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1296 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1297 if (inta & CSR_INT_BIT_SCD) {
1298 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1299 "the frame/frames.\n");
1300 priv->isr_stats.sch++;
1303 /* Alive notification via Rx interrupt will do the real work */
1304 if (inta & CSR_INT_BIT_ALIVE) {
1305 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1306 priv->isr_stats.alive++;
1310 /* Safely ignore these bits for debug checks below */
1311 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1313 /* HW RF KILL switch toggled */
1314 if (inta & CSR_INT_BIT_RF_KILL) {
1316 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1317 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1320 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1321 hw_rf_kill ? "disable radio" : "enable radio");
1323 priv->isr_stats.rfkill++;
1325 /* driver only loads ucode once setting the interface up.
1326 * the driver allows loading the ucode even if the radio
1327 * is killed. Hence update the killswitch state here. The
1328 * rfkill handler will care about restarting if needed.
1330 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1332 set_bit(STATUS_RF_KILL_HW, &priv->status);
1334 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1335 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1338 handled |= CSR_INT_BIT_RF_KILL;
1341 /* Chip got too hot and stopped itself */
1342 if (inta & CSR_INT_BIT_CT_KILL) {
1343 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1344 priv->isr_stats.ctkill++;
1345 handled |= CSR_INT_BIT_CT_KILL;
1348 /* Error detected by uCode */
1349 if (inta & CSR_INT_BIT_SW_ERR) {
1350 IWL_ERR(priv, "Microcode SW error detected. "
1351 " Restarting 0x%X.\n", inta);
1352 priv->isr_stats.sw++;
1353 priv->isr_stats.sw_err = inta;
1354 iwl_irq_handle_error(priv);
1355 handled |= CSR_INT_BIT_SW_ERR;
1358 /* uCode wakes up after power-down sleep */
1359 if (inta & CSR_INT_BIT_WAKEUP) {
1360 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1361 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1362 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1363 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
1365 priv->isr_stats.wakeup++;
1367 handled |= CSR_INT_BIT_WAKEUP;
1370 /* All uCode command responses, including Tx command responses,
1371 * Rx "responses" (frame-received notification), and other
1372 * notifications from uCode come through here*/
1373 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1374 CSR_INT_BIT_RX_PERIODIC)) {
1375 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1376 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1377 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1378 iwl_write32(priv, CSR_FH_INT_STATUS,
1379 CSR49_FH_INT_RX_MASK);
1381 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1382 handled |= CSR_INT_BIT_RX_PERIODIC;
1383 iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1385 /* Sending RX interrupt require many steps to be done in the
1387 * 1- write interrupt to current index in ICT table.
1389 * 3- update RX shared data to indicate last write index.
1390 * 4- send interrupt.
1391 * This could lead to RX race, driver could receive RX interrupt
1392 * but the shared data changes does not reflect this;
1393 * periodic interrupt will detect any dangling Rx activity.
1396 /* Disable periodic interrupt; we use it as just a one-shot. */
1397 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1398 CSR_INT_PERIODIC_DIS);
1399 iwl_rx_handle(priv);
1402 * Enable periodic interrupt in 8 msec only if we received
1403 * real RX interrupt (instead of just periodic int), to catch
1404 * any dangling Rx interrupt. If it was just the periodic
1405 * interrupt, there was no dangling Rx activity, and no need
1406 * to extend the periodic interrupt; one-shot is enough.
1408 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1409 iwl_write8(priv, CSR_INT_PERIODIC_REG,
1410 CSR_INT_PERIODIC_ENA);
1412 priv->isr_stats.rx++;
1415 /* This "Tx" DMA channel is used only for loading uCode */
1416 if (inta & CSR_INT_BIT_FH_TX) {
1417 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1418 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
1419 priv->isr_stats.tx++;
1420 handled |= CSR_INT_BIT_FH_TX;
1421 /* Wake up uCode load routine, now that load is complete */
1422 priv->ucode_write_complete = 1;
1423 wake_up_interruptible(&priv->wait_command_queue);
1426 if (inta & ~handled) {
1427 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1428 priv->isr_stats.unhandled++;
1431 if (inta & ~(priv->inta_mask)) {
1432 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1433 inta & ~priv->inta_mask);
1436 /* Re-enable all interrupts */
1437 /* only Re-enable if diabled by irq */
1438 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1439 iwl_enable_interrupts(priv);
1443 /******************************************************************************
1445 * uCode download functions
1447 ******************************************************************************/
1449 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1451 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1452 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1453 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1454 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1455 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1456 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1459 static void iwl_nic_start(struct iwl_priv *priv)
1461 /* Remove all resets to allow NIC to operate */
1462 iwl_write32(priv, CSR_RESET, 0);
1466 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
1467 static int iwl_mac_setup_register(struct iwl_priv *priv);
1469 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
1471 const char *name_pre = priv->cfg->fw_name_pre;
1474 priv->fw_index = priv->cfg->ucode_api_max;
1478 if (priv->fw_index < priv->cfg->ucode_api_min) {
1479 IWL_ERR(priv, "no suitable firmware found!\n");
1483 sprintf(priv->firmware_name, "%s%d%s",
1484 name_pre, priv->fw_index, ".ucode");
1486 IWL_DEBUG_INFO(priv, "attempting to load firmware '%s'\n",
1487 priv->firmware_name);
1489 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1490 &priv->pci_dev->dev, GFP_KERNEL, priv,
1491 iwl_ucode_callback);
1495 * iwl_ucode_callback - callback when firmware was loaded
1497 * If loaded successfully, copies the firmware into buffers
1498 * for the card to fetch (via DMA).
1500 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1502 struct iwl_priv *priv = context;
1503 struct iwl_ucode_header *ucode;
1504 const unsigned int api_max = priv->cfg->ucode_api_max;
1505 const unsigned int api_min = priv->cfg->ucode_api_min;
1509 u32 inst_size, data_size, init_size, init_data_size, boot_size;
1514 IWL_ERR(priv, "request for firmware file '%s' failed.\n",
1515 priv->firmware_name);
1519 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1520 priv->firmware_name, ucode_raw->size);
1522 /* Make sure that we got at least the v1 header! */
1523 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
1524 IWL_ERR(priv, "File size way too small!\n");
1528 /* Data from ucode file: header followed by uCode images */
1529 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1531 priv->ucode_ver = le32_to_cpu(ucode->ver);
1532 api_ver = IWL_UCODE_API(priv->ucode_ver);
1533 build = priv->cfg->ops->ucode->get_build(ucode, api_ver);
1534 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
1535 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
1536 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
1538 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
1539 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
1540 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
1542 /* api_ver should match the api version forming part of the
1543 * firmware filename ... but we don't check for that and only rely
1544 * on the API version read from firmware header from here on forward */
1546 if (api_ver < api_min || api_ver > api_max) {
1547 IWL_ERR(priv, "Driver unable to support your firmware API. "
1548 "Driver supports v%u, firmware is v%u.\n",
1553 if (api_ver != api_max)
1554 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1555 "got v%u. New firmware can be obtained "
1556 "from http://www.intellinuxwireless.org.\n",
1559 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1560 IWL_UCODE_MAJOR(priv->ucode_ver),
1561 IWL_UCODE_MINOR(priv->ucode_ver),
1562 IWL_UCODE_API(priv->ucode_ver),
1563 IWL_UCODE_SERIAL(priv->ucode_ver));
1565 snprintf(priv->hw->wiphy->fw_version,
1566 sizeof(priv->hw->wiphy->fw_version),
1568 IWL_UCODE_MAJOR(priv->ucode_ver),
1569 IWL_UCODE_MINOR(priv->ucode_ver),
1570 IWL_UCODE_API(priv->ucode_ver),
1571 IWL_UCODE_SERIAL(priv->ucode_ver));
1574 IWL_DEBUG_INFO(priv, "Build %u\n", build);
1576 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
1577 IWL_DEBUG_INFO(priv, "NVM Type: %s, version: 0x%x\n",
1578 (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
1579 ? "OTP" : "EEPROM", eeprom_ver);
1581 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1583 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1585 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1587 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1589 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1591 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1595 * For any of the failures below (before allocating pci memory)
1596 * we will try to load a version with a smaller API -- maybe the
1597 * user just got a corrupted version of the latest API.
1600 /* Verify size of file vs. image size info in file's header */
1601 if (ucode_raw->size !=
1602 priv->cfg->ops->ucode->get_header_size(api_ver) +
1603 inst_size + data_size + init_size +
1604 init_data_size + boot_size) {
1606 IWL_DEBUG_INFO(priv,
1607 "uCode file size %d does not match expected size\n",
1608 (int)ucode_raw->size);
1612 /* Verify that uCode images will fit in card's SRAM */
1613 if (inst_size > priv->hw_params.max_inst_size) {
1614 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1619 if (data_size > priv->hw_params.max_data_size) {
1620 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1624 if (init_size > priv->hw_params.max_inst_size) {
1625 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1629 if (init_data_size > priv->hw_params.max_data_size) {
1630 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1634 if (boot_size > priv->hw_params.max_bsm_size) {
1635 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1640 /* Allocate ucode buffers for card's bus-master loading ... */
1642 /* Runtime instructions and 2 copies of data:
1643 * 1) unmodified from disk
1644 * 2) backup cache for save/restore during power-downs */
1645 priv->ucode_code.len = inst_size;
1646 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1648 priv->ucode_data.len = data_size;
1649 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1651 priv->ucode_data_backup.len = data_size;
1652 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1654 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1655 !priv->ucode_data_backup.v_addr)
1658 /* Initialization instructions and data */
1659 if (init_size && init_data_size) {
1660 priv->ucode_init.len = init_size;
1661 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1663 priv->ucode_init_data.len = init_data_size;
1664 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1666 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1670 /* Bootstrap (instructions only, no data) */
1672 priv->ucode_boot.len = boot_size;
1673 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1675 if (!priv->ucode_boot.v_addr)
1679 /* Copy images into buffers for card's bus-master reads ... */
1681 /* Runtime instructions (first block of data in file) */
1683 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1684 memcpy(priv->ucode_code.v_addr, src, len);
1687 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1688 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1690 /* Runtime data (2nd block)
1691 * NOTE: Copy into backup buffer will be done in iwl_up() */
1693 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1694 memcpy(priv->ucode_data.v_addr, src, len);
1695 memcpy(priv->ucode_data_backup.v_addr, src, len);
1698 /* Initialization instructions (3rd block) */
1701 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1703 memcpy(priv->ucode_init.v_addr, src, len);
1707 /* Initialization data (4th block) */
1708 if (init_data_size) {
1709 len = init_data_size;
1710 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1712 memcpy(priv->ucode_init_data.v_addr, src, len);
1716 /* Bootstrap instructions (5th block) */
1718 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1719 memcpy(priv->ucode_boot.v_addr, src, len);
1721 /**************************************************
1722 * This is still part of probe() in a sense...
1724 * 9. Setup and register with mac80211 and debugfs
1725 **************************************************/
1726 err = iwl_mac_setup_register(priv);
1730 err = iwl_dbgfs_register(priv, DRV_NAME);
1732 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1734 /* We have our copies now, allow OS release its copies */
1735 release_firmware(ucode_raw);
1739 /* try next, if any */
1740 if (iwl_request_firmware(priv, false))
1742 release_firmware(ucode_raw);
1746 IWL_ERR(priv, "failed to allocate pci memory\n");
1747 iwl_dealloc_ucode_pci(priv);
1749 device_release_driver(&priv->pci_dev->dev);
1750 release_firmware(ucode_raw);
1753 static const char *desc_lookup_text[] = {
1758 "NMI_INTERRUPT_WDG",
1762 "HW_ERROR_TUNE_LOCK",
1763 "HW_ERROR_TEMPERATURE",
1764 "ILLEGAL_CHAN_FREQ",
1767 "NMI_INTERRUPT_HOST",
1768 "NMI_INTERRUPT_ACTION_PT",
1769 "NMI_INTERRUPT_UNKNOWN",
1770 "UCODE_VERSION_MISMATCH",
1771 "HW_ERROR_ABS_LOCK",
1772 "HW_ERROR_CAL_LOCK_FAIL",
1773 "NMI_INTERRUPT_INST_ACTION_PT",
1774 "NMI_INTERRUPT_DATA_ACTION_PT",
1776 "NMI_INTERRUPT_TRM",
1777 "NMI_INTERRUPT_BREAK_POINT"
1782 "ADVANCED SYSASSERT"
1785 static const char *desc_lookup(int i)
1787 int max = ARRAY_SIZE(desc_lookup_text) - 1;
1789 if (i < 0 || i > max)
1792 return desc_lookup_text[i];
1795 #define ERROR_START_OFFSET (1 * sizeof(u32))
1796 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1798 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1801 u32 desc, time, count, base, data1;
1802 u32 blink1, blink2, ilink1, ilink2;
1804 if (priv->ucode_type == UCODE_INIT)
1805 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1807 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1809 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1811 "Not valid error log pointer 0x%08X for %s uCode\n",
1812 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
1816 count = iwl_read_targ_mem(priv, base);
1818 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1819 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1820 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1821 priv->status, count);
1824 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1825 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1826 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1827 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1828 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1829 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1830 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1831 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1832 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1834 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
1835 blink1, blink2, ilink1, ilink2);
1837 IWL_ERR(priv, "Desc Time "
1838 "data1 data2 line\n");
1839 IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1840 desc_lookup(desc), desc, time, data1, data2, line);
1841 IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n");
1842 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1847 #define EVENT_START_OFFSET (4 * sizeof(u32))
1850 * iwl_print_event_log - Dump error event log to syslog
1853 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1854 u32 num_events, u32 mode,
1855 int pos, char **buf, size_t bufsz)
1858 u32 base; /* SRAM byte address of event log header */
1859 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1860 u32 ptr; /* SRAM byte address of log data */
1861 u32 ev, time, data; /* event log data */
1862 unsigned long reg_flags;
1864 if (num_events == 0)
1866 if (priv->ucode_type == UCODE_INIT)
1867 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1869 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1872 event_size = 2 * sizeof(u32);
1874 event_size = 3 * sizeof(u32);
1876 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1878 /* Make sure device is powered up for SRAM reads */
1879 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1880 iwl_grab_nic_access(priv);
1882 /* Set starting address; reads will auto-increment */
1883 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
1886 /* "time" is actually "data" for mode 0 (no timestamp).
1887 * place event id # at far right for easier visual parsing. */
1888 for (i = 0; i < num_events; i++) {
1889 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1890 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1894 pos += scnprintf(*buf + pos, bufsz - pos,
1895 "EVT_LOG:0x%08x:%04u\n",
1898 trace_iwlwifi_dev_ucode_event(priv, 0,
1900 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1904 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
1906 pos += scnprintf(*buf + pos, bufsz - pos,
1907 "EVT_LOGT:%010u:0x%08x:%04u\n",
1910 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1912 trace_iwlwifi_dev_ucode_event(priv, time,
1918 /* Allow device to power down */
1919 iwl_release_nic_access(priv);
1920 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1925 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1927 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1928 u32 num_wraps, u32 next_entry,
1930 int pos, char **buf, size_t bufsz)
1933 * display the newest DEFAULT_LOG_ENTRIES entries
1934 * i.e the entries just before the next ont that uCode would fill.
1937 if (next_entry < size) {
1938 pos = iwl_print_event_log(priv,
1939 capacity - (size - next_entry),
1940 size - next_entry, mode,
1942 pos = iwl_print_event_log(priv, 0,
1946 pos = iwl_print_event_log(priv, next_entry - size,
1947 size, mode, pos, buf, bufsz);
1949 if (next_entry < size) {
1950 pos = iwl_print_event_log(priv, 0, next_entry,
1951 mode, pos, buf, bufsz);
1953 pos = iwl_print_event_log(priv, next_entry - size,
1954 size, mode, pos, buf, bufsz);
1960 /* For sanity check only. Actual size is determined by uCode, typ. 512 */
1961 #define MAX_EVENT_LOG_SIZE (512)
1963 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1965 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1966 char **buf, bool display)
1968 u32 base; /* SRAM byte address of event log header */
1969 u32 capacity; /* event log capacity in # entries */
1970 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1971 u32 num_wraps; /* # times uCode wrapped to top of log */
1972 u32 next_entry; /* index of next entry to be written by uCode */
1973 u32 size; /* # entries that we'll print */
1977 if (priv->ucode_type == UCODE_INIT)
1978 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1980 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1982 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1984 "Invalid event log pointer 0x%08X for %s uCode\n",
1985 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
1989 /* event log header */
1990 capacity = iwl_read_targ_mem(priv, base);
1991 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1992 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1993 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1995 if (capacity > MAX_EVENT_LOG_SIZE) {
1996 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1997 capacity, MAX_EVENT_LOG_SIZE);
1998 capacity = MAX_EVENT_LOG_SIZE;
2001 if (next_entry > MAX_EVENT_LOG_SIZE) {
2002 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2003 next_entry, MAX_EVENT_LOG_SIZE);
2004 next_entry = MAX_EVENT_LOG_SIZE;
2007 size = num_wraps ? capacity : next_entry;
2009 /* bail out if nothing in log */
2011 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
2015 #ifdef CONFIG_IWLWIFI_DEBUG
2016 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
2017 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2018 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2020 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2021 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2023 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2026 #ifdef CONFIG_IWLWIFI_DEBUG
2029 bufsz = capacity * 48;
2032 *buf = kmalloc(bufsz, GFP_KERNEL);
2036 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2038 * if uCode has wrapped back to top of log,
2039 * start at the oldest entry,
2040 * i.e the next one that uCode would fill.
2043 pos = iwl_print_event_log(priv, next_entry,
2044 capacity - next_entry, mode,
2046 /* (then/else) start at top of log */
2047 pos = iwl_print_event_log(priv, 0,
2048 next_entry, mode, pos, buf, bufsz);
2050 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2051 next_entry, size, mode,
2054 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2055 next_entry, size, mode,
2062 * iwl_alive_start - called after REPLY_ALIVE notification received
2063 * from protocol/runtime uCode (initialization uCode's
2064 * Alive gets handled by iwl_init_alive_start()).
2066 static void iwl_alive_start(struct iwl_priv *priv)
2070 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
2072 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2073 /* We had an error bringing up the hardware, so take it
2074 * all the way back down so we can try again */
2075 IWL_DEBUG_INFO(priv, "Alive failed.\n");
2079 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2080 * This is a paranoid check, because we would not have gotten the
2081 * "runtime" alive if code weren't properly loaded. */
2082 if (iwl_verify_ucode(priv)) {
2083 /* Runtime instruction load was bad;
2084 * take it all the way back down so we can try again */
2085 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
2089 iwl_clear_stations_table(priv);
2090 ret = priv->cfg->ops->lib->alive_notify(priv);
2093 "Could not complete ALIVE transition [ntf]: %d\n", ret);
2097 /* After the ALIVE response, we can send host commands to the uCode */
2098 set_bit(STATUS_ALIVE, &priv->status);
2100 if (iwl_is_rfkill(priv))
2103 ieee80211_wake_queues(priv->hw);
2105 priv->active_rate = priv->rates_mask;
2106 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2108 /* Configure Tx antenna selection based on H/W config */
2109 if (priv->cfg->ops->hcmd->set_tx_ant)
2110 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2112 if (iwl_is_associated(priv)) {
2113 struct iwl_rxon_cmd *active_rxon =
2114 (struct iwl_rxon_cmd *)&priv->active_rxon;
2115 /* apply any changes in staging */
2116 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2117 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2119 /* Initialize our rx_config data */
2120 iwl_connection_init_rx_config(priv, priv->iw_mode);
2122 if (priv->cfg->ops->hcmd->set_rxon_chain)
2123 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2125 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2128 /* Configure Bluetooth device coexistence support */
2129 iwl_send_bt_config(priv);
2131 iwl_reset_run_time_calib(priv);
2133 /* Configure the adapter for unassociated operation */
2134 iwlcore_commit_rxon(priv);
2136 /* At this point, the NIC is initialized and operational */
2137 iwl_rf_kill_ct_config(priv);
2139 iwl_leds_init(priv);
2141 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2142 set_bit(STATUS_READY, &priv->status);
2143 wake_up_interruptible(&priv->wait_command_queue);
2145 iwl_power_update_mode(priv, true);
2147 /* reassociate for ADHOC mode */
2148 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
2149 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
2152 iwl_mac_beacon_update(priv->hw, beacon);
2156 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2157 iwl_set_mode(priv, priv->iw_mode);
2162 queue_work(priv->workqueue, &priv->restart);
2165 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2167 static void __iwl_down(struct iwl_priv *priv)
2169 unsigned long flags;
2170 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2172 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2175 set_bit(STATUS_EXIT_PENDING, &priv->status);
2177 iwl_clear_stations_table(priv);
2179 /* Unblock any waiting calls */
2180 wake_up_interruptible_all(&priv->wait_command_queue);
2182 /* Wipe out the EXIT_PENDING status bit if we are not actually
2183 * exiting the module */
2185 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2187 /* stop and reset the on-board processor */
2188 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2190 /* tell the device to stop sending interrupts */
2191 spin_lock_irqsave(&priv->lock, flags);
2192 iwl_disable_interrupts(priv);
2193 spin_unlock_irqrestore(&priv->lock, flags);
2194 iwl_synchronize_irq(priv);
2196 if (priv->mac80211_registered)
2197 ieee80211_stop_queues(priv->hw);
2199 /* If we have not previously called iwl_init() then
2200 * clear all bits but the RF Kill bit and return */
2201 if (!iwl_is_init(priv)) {
2202 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2204 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2205 STATUS_GEO_CONFIGURED |
2206 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2207 STATUS_EXIT_PENDING;
2211 /* ...otherwise clear out all the status bits but the RF Kill
2212 * bit and continue taking the NIC down. */
2213 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2215 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2216 STATUS_GEO_CONFIGURED |
2217 test_bit(STATUS_FW_ERROR, &priv->status) <<
2219 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2220 STATUS_EXIT_PENDING;
2222 /* device going down, Stop using ICT table */
2223 iwl_disable_ict(priv);
2225 iwl_txq_ctx_stop(priv);
2228 /* Power-down device's busmaster DMA clocks */
2229 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
2232 /* Make sure (redundant) we've released our request to stay awake */
2233 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2235 /* Stop the device, and put it in low power state */
2236 priv->cfg->ops->lib->apm_ops.stop(priv);
2239 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2241 if (priv->ibss_beacon)
2242 dev_kfree_skb(priv->ibss_beacon);
2243 priv->ibss_beacon = NULL;
2245 /* clear out any free frames */
2246 iwl_clear_free_frames(priv);
2249 static void iwl_down(struct iwl_priv *priv)
2251 mutex_lock(&priv->mutex);
2253 mutex_unlock(&priv->mutex);
2255 iwl_cancel_deferred_work(priv);
2258 #define HW_READY_TIMEOUT (50)
2260 static int iwl_set_hw_ready(struct iwl_priv *priv)
2264 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2265 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
2267 /* See if we got it */
2268 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2269 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2270 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2272 if (ret != -ETIMEDOUT)
2273 priv->hw_ready = true;
2275 priv->hw_ready = false;
2277 IWL_DEBUG_INFO(priv, "hardware %s\n",
2278 (priv->hw_ready == 1) ? "ready" : "not ready");
2282 static int iwl_prepare_card_hw(struct iwl_priv *priv)
2286 IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter \n");
2288 ret = iwl_set_hw_ready(priv);
2292 /* If HW is not ready, prepare the conditions to check again */
2293 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2294 CSR_HW_IF_CONFIG_REG_PREPARE);
2296 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2297 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
2298 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
2300 /* HW should be ready by now, check again. */
2301 if (ret != -ETIMEDOUT)
2302 iwl_set_hw_ready(priv);
2307 #define MAX_HW_RESTARTS 5
2309 static int __iwl_up(struct iwl_priv *priv)
2314 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2315 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2319 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2320 IWL_ERR(priv, "ucode not available for device bringup\n");
2324 iwl_prepare_card_hw(priv);
2326 if (!priv->hw_ready) {
2327 IWL_WARN(priv, "Exit HW not ready\n");
2331 /* If platform's RF_KILL switch is NOT set to KILL */
2332 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2333 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2335 set_bit(STATUS_RF_KILL_HW, &priv->status);
2337 if (iwl_is_rfkill(priv)) {
2338 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
2340 iwl_enable_interrupts(priv);
2341 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2345 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2347 ret = iwl_hw_nic_init(priv);
2349 IWL_ERR(priv, "Unable to init nic\n");
2353 /* make sure rfkill handshake bits are cleared */
2354 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2355 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2356 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2358 /* clear (again), then enable host interrupts */
2359 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2360 iwl_enable_interrupts(priv);
2362 /* really make sure rfkill handshake bits are cleared */
2363 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2364 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2366 /* Copy original ucode data image from disk into backup cache.
2367 * This will be used to initialize the on-board processor's
2368 * data SRAM for a clean start when the runtime program first loads. */
2369 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2370 priv->ucode_data.len);
2372 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2374 iwl_clear_stations_table(priv);
2376 /* load bootstrap state machine,
2377 * load bootstrap program into processor's memory,
2378 * prepare to load the "initialize" uCode */
2379 ret = priv->cfg->ops->lib->load_ucode(priv);
2382 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
2387 /* start card; "initialize" will load runtime ucode */
2388 iwl_nic_start(priv);
2390 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2395 set_bit(STATUS_EXIT_PENDING, &priv->status);
2397 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2399 /* tried to restart and config the device for as long as our
2400 * patience could withstand */
2401 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2406 /*****************************************************************************
2408 * Workqueue callbacks
2410 *****************************************************************************/
2412 static void iwl_bg_init_alive_start(struct work_struct *data)
2414 struct iwl_priv *priv =
2415 container_of(data, struct iwl_priv, init_alive_start.work);
2417 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2420 mutex_lock(&priv->mutex);
2421 priv->cfg->ops->lib->init_alive_start(priv);
2422 mutex_unlock(&priv->mutex);
2425 static void iwl_bg_alive_start(struct work_struct *data)
2427 struct iwl_priv *priv =
2428 container_of(data, struct iwl_priv, alive_start.work);
2430 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2433 /* enable dram interrupt */
2434 iwl_reset_ict(priv);
2436 mutex_lock(&priv->mutex);
2437 iwl_alive_start(priv);
2438 mutex_unlock(&priv->mutex);
2441 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2443 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2444 run_time_calib_work);
2446 mutex_lock(&priv->mutex);
2448 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2449 test_bit(STATUS_SCANNING, &priv->status)) {
2450 mutex_unlock(&priv->mutex);
2454 if (priv->start_calib) {
2455 iwl_chain_noise_calibration(priv, &priv->statistics);
2457 iwl_sensitivity_calibration(priv, &priv->statistics);
2460 mutex_unlock(&priv->mutex);
2464 static void iwl_bg_restart(struct work_struct *data)
2466 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2468 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2471 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2472 mutex_lock(&priv->mutex);
2475 mutex_unlock(&priv->mutex);
2477 ieee80211_restart_hw(priv->hw);
2481 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2484 mutex_lock(&priv->mutex);
2486 mutex_unlock(&priv->mutex);
2490 static void iwl_bg_rx_replenish(struct work_struct *data)
2492 struct iwl_priv *priv =
2493 container_of(data, struct iwl_priv, rx_replenish);
2495 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2498 mutex_lock(&priv->mutex);
2499 iwl_rx_replenish(priv);
2500 mutex_unlock(&priv->mutex);
2503 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2505 void iwl_post_associate(struct iwl_priv *priv)
2507 struct ieee80211_conf *conf = NULL;
2509 unsigned long flags;
2511 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2512 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2516 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
2517 priv->assoc_id, priv->active_rxon.bssid_addr);
2520 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2524 if (!priv->vif || !priv->is_open)
2527 iwl_scan_cancel_timeout(priv, 200);
2529 conf = ieee80211_get_hw_conf(priv->hw);
2531 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2532 iwlcore_commit_rxon(priv);
2534 iwl_setup_rxon_timing(priv);
2535 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2536 sizeof(priv->rxon_timing), &priv->rxon_timing);
2538 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2539 "Attempting to continue.\n");
2541 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2543 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2545 if (priv->cfg->ops->hcmd->set_rxon_chain)
2546 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2548 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2550 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
2551 priv->assoc_id, priv->beacon_int);
2553 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2554 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2556 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2558 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2559 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2560 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2562 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2564 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2565 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2569 iwlcore_commit_rxon(priv);
2571 switch (priv->iw_mode) {
2572 case NL80211_IFTYPE_STATION:
2575 case NL80211_IFTYPE_ADHOC:
2577 /* assume default assoc id */
2580 iwl_rxon_add_station(priv, priv->bssid, 0);
2581 iwl_send_beacon_cmd(priv);
2586 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2587 __func__, priv->iw_mode);
2591 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2592 priv->assoc_station_added = 1;
2594 spin_lock_irqsave(&priv->lock, flags);
2595 iwl_activate_qos(priv, 0);
2596 spin_unlock_irqrestore(&priv->lock, flags);
2598 /* the chain noise calibration will enabled PM upon completion
2599 * If chain noise has already been run, then we need to enable
2600 * power management here */
2601 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2602 iwl_power_update_mode(priv, false);
2604 /* Enable Rx differential gain and sensitivity calibrations */
2605 iwl_chain_noise_reset(priv);
2606 priv->start_calib = 1;
2610 /*****************************************************************************
2612 * mac80211 entry point functions
2614 *****************************************************************************/
2616 #define UCODE_READY_TIMEOUT (4 * HZ)
2619 * Not a mac80211 entry point function, but it fits in with all the
2620 * other mac80211 functions grouped here.
2622 static int iwl_mac_setup_register(struct iwl_priv *priv)
2625 struct ieee80211_hw *hw = priv->hw;
2626 hw->rate_control_algorithm = "iwl-agn-rs";
2628 /* Tell mac80211 our characteristics */
2629 hw->flags = IEEE80211_HW_SIGNAL_DBM |
2630 IEEE80211_HW_NOISE_DBM |
2631 IEEE80211_HW_AMPDU_AGGREGATION |
2632 IEEE80211_HW_SPECTRUM_MGMT;
2634 if (!priv->cfg->broken_powersave)
2635 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2636 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2638 if (priv->cfg->sku & IWL_SKU_N)
2639 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2640 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2642 hw->sta_data_size = sizeof(struct iwl_station_priv);
2643 hw->wiphy->interface_modes =
2644 BIT(NL80211_IFTYPE_STATION) |
2645 BIT(NL80211_IFTYPE_ADHOC);
2647 hw->wiphy->flags |= WIPHY_FLAG_STRICT_REGULATORY |
2648 WIPHY_FLAG_DISABLE_BEACON_HINTS;
2651 * For now, disable PS by default because it affects
2652 * RX performance significantly.
2654 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2656 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2657 /* we create the 802.11 header and a zero-length SSID element */
2658 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
2660 /* Default value; 4 EDCA QOS priorities */
2663 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2665 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2666 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2667 &priv->bands[IEEE80211_BAND_2GHZ];
2668 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2669 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2670 &priv->bands[IEEE80211_BAND_5GHZ];
2672 ret = ieee80211_register_hw(priv->hw);
2674 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2677 priv->mac80211_registered = 1;
2683 static int iwl_mac_start(struct ieee80211_hw *hw)
2685 struct iwl_priv *priv = hw->priv;
2688 IWL_DEBUG_MAC80211(priv, "enter\n");
2690 /* we should be verifying the device is ready to be opened */
2691 mutex_lock(&priv->mutex);
2692 ret = __iwl_up(priv);
2693 mutex_unlock(&priv->mutex);
2698 if (iwl_is_rfkill(priv))
2701 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2703 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2704 * mac80211 will not be run successfully. */
2705 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2706 test_bit(STATUS_READY, &priv->status),
2707 UCODE_READY_TIMEOUT);
2709 if (!test_bit(STATUS_READY, &priv->status)) {
2710 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2711 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2716 iwl_led_start(priv);
2720 IWL_DEBUG_MAC80211(priv, "leave\n");
2724 static void iwl_mac_stop(struct ieee80211_hw *hw)
2726 struct iwl_priv *priv = hw->priv;
2728 IWL_DEBUG_MAC80211(priv, "enter\n");
2735 if (iwl_is_ready_rf(priv) || test_bit(STATUS_SCAN_HW, &priv->status)) {
2736 /* stop mac, cancel any scan request and clear
2737 * RXON_FILTER_ASSOC_MSK BIT
2739 mutex_lock(&priv->mutex);
2740 iwl_scan_cancel_timeout(priv, 100);
2741 mutex_unlock(&priv->mutex);
2746 flush_workqueue(priv->workqueue);
2748 /* enable interrupts again in order to receive rfkill changes */
2749 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2750 iwl_enable_interrupts(priv);
2752 IWL_DEBUG_MAC80211(priv, "leave\n");
2755 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2757 struct iwl_priv *priv = hw->priv;
2759 IWL_DEBUG_MACDUMP(priv, "enter\n");
2761 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2762 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2764 if (iwl_tx_skb(priv, skb))
2765 dev_kfree_skb_any(skb);
2767 IWL_DEBUG_MACDUMP(priv, "leave\n");
2768 return NETDEV_TX_OK;
2771 void iwl_config_ap(struct iwl_priv *priv)
2774 unsigned long flags;
2776 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2779 /* The following should be done only at AP bring up */
2780 if (!iwl_is_associated(priv)) {
2782 /* RXON - unassoc (to set timing command) */
2783 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2784 iwlcore_commit_rxon(priv);
2787 iwl_setup_rxon_timing(priv);
2788 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2789 sizeof(priv->rxon_timing), &priv->rxon_timing);
2791 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2792 "Attempting to continue.\n");
2794 /* AP has all antennas */
2795 priv->chain_noise_data.active_chains =
2796 priv->hw_params.valid_rx_ant;
2797 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2798 if (priv->cfg->ops->hcmd->set_rxon_chain)
2799 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2801 /* FIXME: what should be the assoc_id for AP? */
2802 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2803 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2804 priv->staging_rxon.flags |=
2805 RXON_FLG_SHORT_PREAMBLE_MSK;
2807 priv->staging_rxon.flags &=
2808 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2810 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2811 if (priv->assoc_capability &
2812 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2813 priv->staging_rxon.flags |=
2814 RXON_FLG_SHORT_SLOT_MSK;
2816 priv->staging_rxon.flags &=
2817 ~RXON_FLG_SHORT_SLOT_MSK;
2819 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2820 priv->staging_rxon.flags &=
2821 ~RXON_FLG_SHORT_SLOT_MSK;
2823 /* restore RXON assoc */
2824 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2825 iwlcore_commit_rxon(priv);
2826 iwl_reset_qos(priv);
2827 spin_lock_irqsave(&priv->lock, flags);
2828 iwl_activate_qos(priv, 1);
2829 spin_unlock_irqrestore(&priv->lock, flags);
2830 iwl_add_bcast_station(priv);
2832 iwl_send_beacon_cmd(priv);
2834 /* FIXME - we need to add code here to detect a totally new
2835 * configuration, reset the AP, unassoc, rxon timing, assoc,
2836 * clear sta table, add BCAST sta... */
2839 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2840 struct ieee80211_vif *vif,
2841 struct ieee80211_key_conf *keyconf,
2842 struct ieee80211_sta *sta,
2843 u32 iv32, u16 *phase1key)
2846 struct iwl_priv *priv = hw->priv;
2847 IWL_DEBUG_MAC80211(priv, "enter\n");
2849 iwl_update_tkip_key(priv, keyconf,
2850 sta ? sta->addr : iwl_bcast_addr,
2853 IWL_DEBUG_MAC80211(priv, "leave\n");
2856 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2857 struct ieee80211_vif *vif,
2858 struct ieee80211_sta *sta,
2859 struct ieee80211_key_conf *key)
2861 struct iwl_priv *priv = hw->priv;
2865 bool is_default_wep_key = false;
2867 IWL_DEBUG_MAC80211(priv, "enter\n");
2869 if (priv->cfg->mod_params->sw_crypto) {
2870 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2873 addr = sta ? sta->addr : iwl_bcast_addr;
2874 sta_id = iwl_find_station(priv, addr);
2875 if (sta_id == IWL_INVALID_STATION) {
2876 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2882 mutex_lock(&priv->mutex);
2883 iwl_scan_cancel_timeout(priv, 100);
2884 mutex_unlock(&priv->mutex);
2886 /* If we are getting WEP group key and we didn't receive any key mapping
2887 * so far, we are in legacy wep mode (group key only), otherwise we are
2889 * In legacy wep mode, we use another host command to the uCode */
2890 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2891 priv->iw_mode != NL80211_IFTYPE_AP) {
2893 is_default_wep_key = !priv->key_mapping_key;
2895 is_default_wep_key =
2896 (key->hw_key_idx == HW_KEY_DEFAULT);
2901 if (is_default_wep_key)
2902 ret = iwl_set_default_wep_key(priv, key);
2904 ret = iwl_set_dynamic_key(priv, key, sta_id);
2906 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2909 if (is_default_wep_key)
2910 ret = iwl_remove_default_wep_key(priv, key);
2912 ret = iwl_remove_dynamic_key(priv, key, sta_id);
2914 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2920 IWL_DEBUG_MAC80211(priv, "leave\n");
2925 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2926 struct ieee80211_vif *vif,
2927 enum ieee80211_ampdu_mlme_action action,
2928 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2930 struct iwl_priv *priv = hw->priv;
2933 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2936 if (!(priv->cfg->sku & IWL_SKU_N))
2940 case IEEE80211_AMPDU_RX_START:
2941 IWL_DEBUG_HT(priv, "start Rx\n");
2942 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2943 case IEEE80211_AMPDU_RX_STOP:
2944 IWL_DEBUG_HT(priv, "stop Rx\n");
2945 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2946 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2950 case IEEE80211_AMPDU_TX_START:
2951 IWL_DEBUG_HT(priv, "start Tx\n");
2952 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2953 case IEEE80211_AMPDU_TX_STOP:
2954 IWL_DEBUG_HT(priv, "stop Tx\n");
2955 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2956 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2960 case IEEE80211_AMPDU_TX_OPERATIONAL:
2964 IWL_DEBUG_HT(priv, "unknown\n");
2971 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2972 struct ieee80211_low_level_stats *stats)
2974 struct iwl_priv *priv = hw->priv;
2977 IWL_DEBUG_MAC80211(priv, "enter\n");
2978 IWL_DEBUG_MAC80211(priv, "leave\n");
2983 static void iwl_mac_sta_notify(struct ieee80211_hw *hw,
2984 struct ieee80211_vif *vif,
2985 enum sta_notify_cmd cmd,
2986 struct ieee80211_sta *sta)
2988 struct iwl_priv *priv = hw->priv;
2989 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2993 * TODO: We really should use this callback to
2994 * actually maintain the station table in
2999 case STA_NOTIFY_ADD:
3000 atomic_set(&sta_priv->pending_frames, 0);
3001 if (vif->type == NL80211_IFTYPE_AP)
3002 sta_priv->client = true;
3004 case STA_NOTIFY_SLEEP:
3005 WARN_ON(!sta_priv->client);
3006 sta_priv->asleep = true;
3007 if (atomic_read(&sta_priv->pending_frames) > 0)
3008 ieee80211_sta_block_awake(hw, sta, true);
3010 case STA_NOTIFY_AWAKE:
3011 WARN_ON(!sta_priv->client);
3012 if (!sta_priv->asleep)
3014 sta_priv->asleep = false;
3015 sta_id = iwl_find_station(priv, sta->addr);
3016 if (sta_id != IWL_INVALID_STATION)
3017 iwl_sta_modify_ps_wake(priv, sta_id);
3024 /*****************************************************************************
3028 *****************************************************************************/
3030 #ifdef CONFIG_IWLWIFI_DEBUG
3033 * The following adds a new attribute to the sysfs representation
3034 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3035 * used for controlling the debug level.
3037 * See the level definitions in iwl for details.
3039 * The debug_level being managed using sysfs below is a per device debug
3040 * level that is used instead of the global debug level if it (the per
3041 * device debug level) is set.
3043 static ssize_t show_debug_level(struct device *d,
3044 struct device_attribute *attr, char *buf)
3046 struct iwl_priv *priv = dev_get_drvdata(d);
3047 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
3049 static ssize_t store_debug_level(struct device *d,
3050 struct device_attribute *attr,
3051 const char *buf, size_t count)
3053 struct iwl_priv *priv = dev_get_drvdata(d);
3057 ret = strict_strtoul(buf, 0, &val);
3059 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
3061 priv->debug_level = val;
3062 if (iwl_alloc_traffic_mem(priv))
3064 "Not enough memory to generate traffic log\n");
3066 return strnlen(buf, count);
3069 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3070 show_debug_level, store_debug_level);
3073 #endif /* CONFIG_IWLWIFI_DEBUG */
3076 static ssize_t show_temperature(struct device *d,
3077 struct device_attribute *attr, char *buf)
3079 struct iwl_priv *priv = dev_get_drvdata(d);
3081 if (!iwl_is_alive(priv))
3084 return sprintf(buf, "%d\n", priv->temperature);
3087 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3089 static ssize_t show_tx_power(struct device *d,
3090 struct device_attribute *attr, char *buf)
3092 struct iwl_priv *priv = dev_get_drvdata(d);
3094 if (!iwl_is_ready_rf(priv))
3095 return sprintf(buf, "off\n");
3097 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3100 static ssize_t store_tx_power(struct device *d,
3101 struct device_attribute *attr,
3102 const char *buf, size_t count)
3104 struct iwl_priv *priv = dev_get_drvdata(d);
3108 ret = strict_strtoul(buf, 10, &val);
3110 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
3112 ret = iwl_set_tx_power(priv, val, false);
3114 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
3122 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3124 static ssize_t show_flags(struct device *d,
3125 struct device_attribute *attr, char *buf)
3127 struct iwl_priv *priv = dev_get_drvdata(d);
3129 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3132 static ssize_t store_flags(struct device *d,
3133 struct device_attribute *attr,
3134 const char *buf, size_t count)
3136 struct iwl_priv *priv = dev_get_drvdata(d);
3139 int ret = strict_strtoul(buf, 0, &val);
3144 mutex_lock(&priv->mutex);
3145 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3146 /* Cancel any currently running scans... */
3147 if (iwl_scan_cancel_timeout(priv, 100))
3148 IWL_WARN(priv, "Could not cancel scan.\n");
3150 IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
3151 priv->staging_rxon.flags = cpu_to_le32(flags);
3152 iwlcore_commit_rxon(priv);
3155 mutex_unlock(&priv->mutex);
3160 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3162 static ssize_t show_filter_flags(struct device *d,
3163 struct device_attribute *attr, char *buf)
3165 struct iwl_priv *priv = dev_get_drvdata(d);
3167 return sprintf(buf, "0x%04X\n",
3168 le32_to_cpu(priv->active_rxon.filter_flags));
3171 static ssize_t store_filter_flags(struct device *d,
3172 struct device_attribute *attr,
3173 const char *buf, size_t count)
3175 struct iwl_priv *priv = dev_get_drvdata(d);
3178 int ret = strict_strtoul(buf, 0, &val);
3181 filter_flags = (u32)val;
3183 mutex_lock(&priv->mutex);
3184 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3185 /* Cancel any currently running scans... */
3186 if (iwl_scan_cancel_timeout(priv, 100))
3187 IWL_WARN(priv, "Could not cancel scan.\n");
3189 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3190 "0x%04X\n", filter_flags);
3191 priv->staging_rxon.filter_flags =
3192 cpu_to_le32(filter_flags);
3193 iwlcore_commit_rxon(priv);
3196 mutex_unlock(&priv->mutex);
3201 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3202 store_filter_flags);
3205 static ssize_t show_statistics(struct device *d,
3206 struct device_attribute *attr, char *buf)
3208 struct iwl_priv *priv = dev_get_drvdata(d);
3209 u32 size = sizeof(struct iwl_notif_statistics);
3210 u32 len = 0, ofs = 0;
3211 u8 *data = (u8 *)&priv->statistics;
3214 if (!iwl_is_alive(priv))
3217 mutex_lock(&priv->mutex);
3218 rc = iwl_send_statistics_request(priv, CMD_SYNC, false);
3219 mutex_unlock(&priv->mutex);
3223 "Error sending statistics request: 0x%08X\n", rc);
3227 while (size && (PAGE_SIZE - len)) {
3228 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3229 PAGE_SIZE - len, 1);
3231 if (PAGE_SIZE - len)
3235 size -= min(size, 16U);
3241 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3243 static ssize_t show_rts_ht_protection(struct device *d,
3244 struct device_attribute *attr, char *buf)
3246 struct iwl_priv *priv = dev_get_drvdata(d);
3248 return sprintf(buf, "%s\n",
3249 priv->cfg->use_rts_for_ht ? "RTS/CTS" : "CTS-to-self");
3252 static ssize_t store_rts_ht_protection(struct device *d,
3253 struct device_attribute *attr,
3254 const char *buf, size_t count)
3256 struct iwl_priv *priv = dev_get_drvdata(d);
3260 ret = strict_strtoul(buf, 10, &val);
3262 IWL_INFO(priv, "Input is not in decimal form.\n");
3264 if (!iwl_is_associated(priv))
3265 priv->cfg->use_rts_for_ht = val ? true : false;
3267 IWL_ERR(priv, "Sta associated with AP - "
3268 "Change protection mechanism is not allowed\n");
3274 static DEVICE_ATTR(rts_ht_protection, S_IWUSR | S_IRUGO,
3275 show_rts_ht_protection, store_rts_ht_protection);
3278 /*****************************************************************************
3280 * driver setup and teardown
3282 *****************************************************************************/
3284 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3286 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3288 init_waitqueue_head(&priv->wait_command_queue);
3290 INIT_WORK(&priv->restart, iwl_bg_restart);
3291 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3292 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3293 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3294 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3295 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3297 iwl_setup_scan_deferred_work(priv);
3299 if (priv->cfg->ops->lib->setup_deferred_work)
3300 priv->cfg->ops->lib->setup_deferred_work(priv);
3302 init_timer(&priv->statistics_periodic);
3303 priv->statistics_periodic.data = (unsigned long)priv;
3304 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3306 init_timer(&priv->ucode_trace);
3307 priv->ucode_trace.data = (unsigned long)priv;
3308 priv->ucode_trace.function = iwl_bg_ucode_trace;
3310 if (!priv->cfg->use_isr_legacy)
3311 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3312 iwl_irq_tasklet, (unsigned long)priv);
3314 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3315 iwl_irq_tasklet_legacy, (unsigned long)priv);
3318 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3320 if (priv->cfg->ops->lib->cancel_deferred_work)
3321 priv->cfg->ops->lib->cancel_deferred_work(priv);
3323 cancel_delayed_work_sync(&priv->init_alive_start);
3324 cancel_delayed_work(&priv->scan_check);
3325 cancel_delayed_work(&priv->alive_start);
3326 cancel_work_sync(&priv->beacon_update);
3327 del_timer_sync(&priv->statistics_periodic);
3328 del_timer_sync(&priv->ucode_trace);
3331 static void iwl_init_hw_rates(struct iwl_priv *priv,
3332 struct ieee80211_rate *rates)
3336 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3337 rates[i].bitrate = iwl_rates[i].ieee * 5;
3338 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3339 rates[i].hw_value_short = i;
3341 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3343 * If CCK != 1M then set short preamble rate flag.
3346 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3347 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3352 static int iwl_init_drv(struct iwl_priv *priv)
3356 priv->ibss_beacon = NULL;
3358 spin_lock_init(&priv->sta_lock);
3359 spin_lock_init(&priv->hcmd_lock);
3361 INIT_LIST_HEAD(&priv->free_frames);
3363 mutex_init(&priv->mutex);
3364 mutex_init(&priv->sync_cmd_mutex);
3366 /* Clear the driver's (not device's) station table */
3367 iwl_clear_stations_table(priv);
3369 priv->ieee_channels = NULL;
3370 priv->ieee_rates = NULL;
3371 priv->band = IEEE80211_BAND_2GHZ;
3373 priv->iw_mode = NL80211_IFTYPE_STATION;
3374 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3375 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3377 /* initialize force reset */
3378 priv->force_reset[IWL_RF_RESET].reset_duration =
3379 IWL_DELAY_NEXT_FORCE_RF_RESET;
3380 priv->force_reset[IWL_FW_RESET].reset_duration =
3381 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3383 /* Choose which receivers/antennas to use */
3384 if (priv->cfg->ops->hcmd->set_rxon_chain)
3385 priv->cfg->ops->hcmd->set_rxon_chain(priv);
3387 iwl_init_scan_params(priv);
3389 iwl_reset_qos(priv);
3391 priv->qos_data.qos_active = 0;
3392 priv->qos_data.qos_cap.val = 0;
3394 priv->rates_mask = IWL_RATES_MASK;
3395 /* Set the tx_power_user_lmt to the lowest power level
3396 * this value will get overwritten by channel max power avg
3398 priv->tx_power_user_lmt = IWL_TX_POWER_TARGET_POWER_MIN;
3400 ret = iwl_init_channel_map(priv);
3402 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3406 ret = iwlcore_init_geos(priv);
3408 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3409 goto err_free_channel_map;
3411 iwl_init_hw_rates(priv, priv->ieee_rates);
3415 err_free_channel_map:
3416 iwl_free_channel_map(priv);
3421 static void iwl_uninit_drv(struct iwl_priv *priv)
3423 iwl_calib_free_results(priv);
3424 iwlcore_free_geos(priv);
3425 iwl_free_channel_map(priv);
3429 static struct attribute *iwl_sysfs_entries[] = {
3430 &dev_attr_flags.attr,
3431 &dev_attr_filter_flags.attr,
3432 &dev_attr_statistics.attr,
3433 &dev_attr_temperature.attr,
3434 &dev_attr_tx_power.attr,
3435 &dev_attr_rts_ht_protection.attr,
3436 #ifdef CONFIG_IWLWIFI_DEBUG
3437 &dev_attr_debug_level.attr,
3442 static struct attribute_group iwl_attribute_group = {
3443 .name = NULL, /* put in device directory */
3444 .attrs = iwl_sysfs_entries,
3447 static struct ieee80211_ops iwl_hw_ops = {
3449 .start = iwl_mac_start,
3450 .stop = iwl_mac_stop,
3451 .add_interface = iwl_mac_add_interface,
3452 .remove_interface = iwl_mac_remove_interface,
3453 .config = iwl_mac_config,
3454 .configure_filter = iwl_configure_filter,
3455 .set_key = iwl_mac_set_key,
3456 .update_tkip_key = iwl_mac_update_tkip_key,
3457 .get_stats = iwl_mac_get_stats,
3458 .conf_tx = iwl_mac_conf_tx,
3459 .reset_tsf = iwl_mac_reset_tsf,
3460 .bss_info_changed = iwl_bss_info_changed,
3461 .ampdu_action = iwl_mac_ampdu_action,
3462 .hw_scan = iwl_mac_hw_scan,
3463 .sta_notify = iwl_mac_sta_notify,
3466 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3469 struct iwl_priv *priv;
3470 struct ieee80211_hw *hw;
3471 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3472 unsigned long flags;
3475 /************************
3476 * 1. Allocating HW data
3477 ************************/
3479 /* Disabling hardware scan means that mac80211 will perform scans
3480 * "the hard way", rather than using device's scan. */
3481 if (cfg->mod_params->disable_hw_scan) {
3482 if (iwl_debug_level & IWL_DL_INFO)
3483 dev_printk(KERN_DEBUG, &(pdev->dev),
3484 "Disabling hw_scan\n");
3485 iwl_hw_ops.hw_scan = NULL;
3488 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3494 /* At this point both hw and priv are allocated. */
3496 SET_IEEE80211_DEV(hw, &pdev->dev);
3498 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3500 priv->pci_dev = pdev;
3501 priv->inta_mask = CSR_INI_SET_MASK;
3503 #ifdef CONFIG_IWLWIFI_DEBUG
3504 atomic_set(&priv->restrict_refcnt, 0);
3506 if (iwl_alloc_traffic_mem(priv))
3507 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3509 /**************************
3510 * 2. Initializing PCI bus
3511 **************************/
3512 if (pci_enable_device(pdev)) {
3514 goto out_ieee80211_free_hw;
3517 pci_set_master(pdev);
3519 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3521 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3523 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3525 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3526 /* both attempts failed: */
3528 IWL_WARN(priv, "No suitable DMA available.\n");
3529 goto out_pci_disable_device;
3533 err = pci_request_regions(pdev, DRV_NAME);
3535 goto out_pci_disable_device;
3537 pci_set_drvdata(pdev, priv);
3540 /***********************
3541 * 3. Read REV register
3542 ***********************/
3543 priv->hw_base = pci_iomap(pdev, 0, 0);
3544 if (!priv->hw_base) {
3546 goto out_pci_release_regions;
3549 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3550 (unsigned long long) pci_resource_len(pdev, 0));
3551 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3553 /* these spin locks will be used in apm_ops.init and EEPROM access
3554 * we should init now
3556 spin_lock_init(&priv->reg_lock);
3557 spin_lock_init(&priv->lock);
3560 * stop and reset the on-board processor just in case it is in a
3561 * strange state ... like being left stranded by a primary kernel
3562 * and this is now the kdump kernel trying to start up
3564 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3566 iwl_hw_detect(priv);
3567 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3568 priv->cfg->name, priv->hw_rev);
3570 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3571 * PCI Tx retries from interfering with C3 CPU state */
3572 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3574 iwl_prepare_card_hw(priv);
3575 if (!priv->hw_ready) {
3576 IWL_WARN(priv, "Failed, HW not ready\n");
3583 /* Read the EEPROM */
3584 err = iwl_eeprom_init(priv);
3586 IWL_ERR(priv, "Unable to init EEPROM\n");
3589 err = iwl_eeprom_check_version(priv);
3591 goto out_free_eeprom;
3593 /* extract MAC Address */
3594 iwl_eeprom_get_mac(priv, priv->mac_addr);
3595 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3596 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3598 /************************
3599 * 5. Setup HW constants
3600 ************************/
3601 if (iwl_set_hw_params(priv)) {
3602 IWL_ERR(priv, "failed to set hw parameters\n");
3603 goto out_free_eeprom;
3606 /*******************
3608 *******************/
3610 err = iwl_init_drv(priv);
3612 goto out_free_eeprom;
3613 /* At this point both hw and priv are initialized. */
3615 /********************
3617 ********************/
3618 spin_lock_irqsave(&priv->lock, flags);
3619 iwl_disable_interrupts(priv);
3620 spin_unlock_irqrestore(&priv->lock, flags);
3622 pci_enable_msi(priv->pci_dev);
3624 iwl_alloc_isr_ict(priv);
3625 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
3626 IRQF_SHARED, DRV_NAME, priv);
3628 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3629 goto out_disable_msi;
3631 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3633 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3637 iwl_setup_deferred_work(priv);
3638 iwl_setup_rx_handlers(priv);
3640 /*********************************************
3641 * 8. Enable interrupts and read RFKILL state
3642 *********************************************/
3644 /* enable interrupts if needed: hw bug w/a */
3645 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3646 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3647 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3648 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3651 iwl_enable_interrupts(priv);
3653 /* If platform's RF_KILL switch is NOT set to KILL */
3654 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3655 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3657 set_bit(STATUS_RF_KILL_HW, &priv->status);
3659 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3660 test_bit(STATUS_RF_KILL_HW, &priv->status));
3662 iwl_power_initialize(priv);
3663 iwl_tt_initialize(priv);
3665 err = iwl_request_firmware(priv, true);
3667 goto out_remove_sysfs;
3672 destroy_workqueue(priv->workqueue);
3673 priv->workqueue = NULL;
3674 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3676 free_irq(priv->pci_dev->irq, priv);
3677 iwl_free_isr_ict(priv);
3679 pci_disable_msi(priv->pci_dev);
3680 iwl_uninit_drv(priv);
3682 iwl_eeprom_free(priv);
3684 pci_iounmap(pdev, priv->hw_base);
3685 out_pci_release_regions:
3686 pci_set_drvdata(pdev, NULL);
3687 pci_release_regions(pdev);
3688 out_pci_disable_device:
3689 pci_disable_device(pdev);
3690 out_ieee80211_free_hw:
3691 iwl_free_traffic_mem(priv);
3692 ieee80211_free_hw(priv->hw);
3697 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3699 struct iwl_priv *priv = pci_get_drvdata(pdev);
3700 unsigned long flags;
3705 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3707 iwl_dbgfs_unregister(priv);
3708 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3710 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3711 * to be called and iwl_down since we are removing the device
3712 * we need to set STATUS_EXIT_PENDING bit.
3714 set_bit(STATUS_EXIT_PENDING, &priv->status);
3715 if (priv->mac80211_registered) {
3716 ieee80211_unregister_hw(priv->hw);
3717 priv->mac80211_registered = 0;
3723 * Make sure device is reset to low power before unloading driver.
3724 * This may be redundant with iwl_down(), but there are paths to
3725 * run iwl_down() without calling apm_ops.stop(), and there are
3726 * paths to avoid running iwl_down() at all before leaving driver.
3727 * This (inexpensive) call *makes sure* device is reset.
3729 priv->cfg->ops->lib->apm_ops.stop(priv);
3733 /* make sure we flush any pending irq or
3734 * tasklet for the driver
3736 spin_lock_irqsave(&priv->lock, flags);
3737 iwl_disable_interrupts(priv);
3738 spin_unlock_irqrestore(&priv->lock, flags);
3740 iwl_synchronize_irq(priv);
3742 iwl_dealloc_ucode_pci(priv);
3745 iwl_rx_queue_free(priv, &priv->rxq);
3746 iwl_hw_txq_ctx_free(priv);
3748 iwl_clear_stations_table(priv);
3749 iwl_eeprom_free(priv);
3752 /*netif_stop_queue(dev); */
3753 flush_workqueue(priv->workqueue);
3755 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3756 * priv->workqueue... so we can't take down the workqueue
3758 destroy_workqueue(priv->workqueue);
3759 priv->workqueue = NULL;
3760 iwl_free_traffic_mem(priv);
3762 free_irq(priv->pci_dev->irq, priv);
3763 pci_disable_msi(priv->pci_dev);
3764 pci_iounmap(pdev, priv->hw_base);
3765 pci_release_regions(pdev);
3766 pci_disable_device(pdev);
3767 pci_set_drvdata(pdev, NULL);
3769 iwl_uninit_drv(priv);
3771 iwl_free_isr_ict(priv);
3773 if (priv->ibss_beacon)
3774 dev_kfree_skb(priv->ibss_beacon);
3776 ieee80211_free_hw(priv->hw);
3780 /*****************************************************************************
3782 * driver and module entry point
3784 *****************************************************************************/
3786 /* Hardware specific file defines the PCI IDs table for that hardware module */
3787 static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
3788 #ifdef CONFIG_IWL4965
3789 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3790 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3791 #endif /* CONFIG_IWL4965 */
3792 #ifdef CONFIG_IWL5000
3793 /* 5100 Series WiFi */
3794 {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
3795 {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
3796 {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
3797 {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
3798 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
3799 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
3800 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
3801 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
3802 {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
3803 {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
3804 {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
3805 {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
3806 {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
3807 {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
3808 {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
3809 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
3810 {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
3811 {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
3812 {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
3813 {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
3814 {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
3815 {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
3816 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
3817 {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
3819 /* 5300 Series WiFi */
3820 {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
3821 {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
3822 {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
3823 {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
3824 {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
3825 {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
3826 {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
3827 {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
3828 {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
3829 {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
3830 {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
3831 {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
3833 /* 5350 Series WiFi/WiMax */
3834 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
3835 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
3836 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
3838 /* 5150 Series Wifi/WiMax */
3839 {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
3840 {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
3841 {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
3842 {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
3843 {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
3844 {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
3846 {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
3847 {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
3848 {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
3849 {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
3852 {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
3853 {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
3854 {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
3855 {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
3856 {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
3857 {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
3858 {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
3859 {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
3860 {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
3861 {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
3863 /* 6x50 WiFi/WiMax Series */
3864 {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
3865 {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
3866 {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
3867 {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
3868 {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
3869 {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
3871 /* 1000 Series WiFi */
3872 {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
3873 {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
3874 {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
3875 {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
3876 {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
3877 {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
3878 {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
3879 {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
3880 {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
3881 {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
3882 {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
3883 {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
3884 #endif /* CONFIG_IWL5000 */
3888 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3890 static struct pci_driver iwl_driver = {
3892 .id_table = iwl_hw_card_ids,
3893 .probe = iwl_pci_probe,
3894 .remove = __devexit_p(iwl_pci_remove),
3896 .suspend = iwl_pci_suspend,
3897 .resume = iwl_pci_resume,
3901 static int __init iwl_init(void)
3905 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3906 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3908 ret = iwlagn_rate_control_register();
3910 printk(KERN_ERR DRV_NAME
3911 "Unable to register rate control algorithm: %d\n", ret);
3915 ret = pci_register_driver(&iwl_driver);
3917 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3918 goto error_register;
3924 iwlagn_rate_control_unregister();
3928 static void __exit iwl_exit(void)
3930 pci_unregister_driver(&iwl_driver);
3931 iwlagn_rate_control_unregister();
3934 module_exit(iwl_exit);
3935 module_init(iwl_init);
3937 #ifdef CONFIG_IWLWIFI_DEBUG
3938 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
3939 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
3940 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3941 MODULE_PARM_DESC(debug, "debug output mask");