1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/pci.h>
34 #include <linux/dma-mapping.h>
35 #include <linux/delay.h>
36 #include <linux/skbuff.h>
37 #include <linux/netdevice.h>
38 #include <linux/wireless.h>
39 #include <linux/firmware.h>
40 #include <linux/etherdevice.h>
41 #include <linux/if_arp.h>
43 #include <net/mac80211.h>
45 #include <asm/div64.h>
47 #define DRV_NAME "iwlagn"
49 #include "iwl-eeprom.h"
53 #include "iwl-helpers.h"
55 #include "iwl-calib.h"
58 /******************************************************************************
62 ******************************************************************************/
65 * module name, copyright, version, etc.
67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
69 #ifdef CONFIG_IWLWIFI_DEBUG
75 #ifdef CONFIG_IWLWIFI_SPECTRUM_MEASUREMENT
81 #define DRV_VERSION IWLWIFI_VERSION VD VS
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
87 MODULE_LICENSE("GPL");
88 MODULE_ALIAS("iwl4965");
90 /*************** STATION TABLE MANAGEMENT ****
91 * mac80211 should be examined to determine if sta_info is duplicating
92 * the functionality provided here
95 /**************************************************************/
98 * iwl_commit_rxon - commit staging_rxon to hardware
100 * The RXON command in staging_rxon is committed to the hardware and
101 * the active_rxon structure is updated with the new data. This
102 * function correctly transitions out of the RXON_ASSOC_MSK state if
103 * a HW tune is required based on the RXON structure changes.
105 int iwl_commit_rxon(struct iwl_priv *priv)
107 /* cast away the const for active_rxon in this function */
108 struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
111 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
113 if (!iwl_is_alive(priv))
116 /* always get timestamp with Rx frame */
117 priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
119 ret = iwl_check_rxon_cmd(priv);
121 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
125 /* If we don't need to send a full RXON, we can use
126 * iwl_rxon_assoc_cmd which is used to reconfigure filter
127 * and other flags for the current radio configuration. */
128 if (!iwl_full_rxon_required(priv)) {
129 ret = iwl_send_rxon_assoc(priv);
131 IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
135 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
139 /* station table will be cleared */
140 priv->assoc_station_added = 0;
142 /* If we are currently associated and the new config requires
143 * an RXON_ASSOC and the new config wants the associated mask enabled,
144 * we must clear the associated from the active configuration
145 * before we apply the new config */
146 if (iwl_is_associated(priv) && new_assoc) {
147 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
148 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
150 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
151 sizeof(struct iwl_rxon_cmd),
154 /* If the mask clearing failed then we set
155 * active_rxon back to what it was previously */
157 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
158 IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
163 IWL_DEBUG_INFO(priv, "Sending RXON\n"
164 "* with%s RXON_FILTER_ASSOC_MSK\n"
167 (new_assoc ? "" : "out"),
168 le16_to_cpu(priv->staging_rxon.channel),
169 priv->staging_rxon.bssid_addr);
171 iwl_set_rxon_hwcrypto(priv, !priv->cfg->mod_params->sw_crypto);
173 /* Apply the new configuration
174 * RXON unassoc clears the station table in uCode, send it before
175 * we add the bcast station. If assoc bit is set, we will send RXON
176 * after having added the bcast and bssid station.
179 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
180 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
182 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
185 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
188 iwl_clear_stations_table(priv);
190 priv->start_calib = 0;
192 /* Add the broadcast address so we can send broadcast frames */
193 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
194 IWL_INVALID_STATION) {
195 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
199 /* If we have set the ASSOC_MSK and we are in BSS mode then
200 * add the IWL_AP_ID to the station rate table */
202 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
203 ret = iwl_rxon_add_station(priv,
204 priv->active_rxon.bssid_addr, 1);
205 if (ret == IWL_INVALID_STATION) {
207 "Error adding AP address for TX.\n");
210 priv->assoc_station_added = 1;
211 if (priv->default_wep_key &&
212 iwl_send_static_wepkey_cmd(priv, 0))
214 "Could not send WEP static key.\n");
218 * allow CTS-to-self if possible for new association.
219 * this is relevant only for 5000 series and up,
220 * but will not damage 4965
222 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
224 /* Apply the new configuration
225 * RXON assoc doesn't clear the station table in uCode,
227 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
228 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
230 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
233 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
236 iwl_init_sensitivity(priv);
238 /* If we issue a new RXON command which required a tune then we must
239 * send a new TXPOWER command or we won't be able to Tx any frames */
240 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
242 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
249 void iwl_update_chain_flags(struct iwl_priv *priv)
252 if (priv->cfg->ops->hcmd->set_rxon_chain)
253 priv->cfg->ops->hcmd->set_rxon_chain(priv);
254 iwlcore_commit_rxon(priv);
257 static void iwl_clear_free_frames(struct iwl_priv *priv)
259 struct list_head *element;
261 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
264 while (!list_empty(&priv->free_frames)) {
265 element = priv->free_frames.next;
267 kfree(list_entry(element, struct iwl_frame, list));
268 priv->frames_count--;
271 if (priv->frames_count) {
272 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
274 priv->frames_count = 0;
278 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
280 struct iwl_frame *frame;
281 struct list_head *element;
282 if (list_empty(&priv->free_frames)) {
283 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
285 IWL_ERR(priv, "Could not allocate frame!\n");
289 priv->frames_count++;
293 element = priv->free_frames.next;
295 return list_entry(element, struct iwl_frame, list);
298 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
300 memset(frame, 0, sizeof(*frame));
301 list_add(&frame->list, &priv->free_frames);
304 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
305 struct ieee80211_hdr *hdr,
308 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
309 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
310 (priv->iw_mode != NL80211_IFTYPE_AP)))
313 if (priv->ibss_beacon->len > left)
316 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
318 return priv->ibss_beacon->len;
321 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
322 struct iwl_frame *frame, u8 rate)
324 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
325 unsigned int frame_size;
327 tx_beacon_cmd = &frame->u.beacon;
328 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
330 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
331 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
333 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
334 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
336 BUG_ON(frame_size > MAX_MPDU_SIZE);
337 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
339 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
340 tx_beacon_cmd->tx.rate_n_flags =
341 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
343 tx_beacon_cmd->tx.rate_n_flags =
344 iwl_hw_set_rate_n_flags(rate, 0);
346 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
348 TX_CMD_FLG_STA_RATE_MSK;
350 return sizeof(*tx_beacon_cmd) + frame_size;
352 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
354 struct iwl_frame *frame;
355 unsigned int frame_size;
359 frame = iwl_get_free_frame(priv);
362 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
367 rate = iwl_rate_get_lowest_plcp(priv);
369 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
371 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
374 iwl_free_frame(priv, frame);
379 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
381 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
383 dma_addr_t addr = get_unaligned_le32(&tb->lo);
384 if (sizeof(dma_addr_t) > sizeof(u32))
386 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
391 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
393 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
395 return le16_to_cpu(tb->hi_n_len) >> 4;
398 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
399 dma_addr_t addr, u16 len)
401 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
402 u16 hi_n_len = len << 4;
404 put_unaligned_le32(addr, &tb->lo);
405 if (sizeof(dma_addr_t) > sizeof(u32))
406 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
408 tb->hi_n_len = cpu_to_le16(hi_n_len);
410 tfd->num_tbs = idx + 1;
413 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
415 return tfd->num_tbs & 0x1f;
419 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
420 * @priv - driver private data
423 * Does NOT advance any TFD circular buffer read/write indexes
424 * Does NOT free the TFD itself (which is within circular buffer)
426 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
428 struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
430 struct pci_dev *dev = priv->pci_dev;
431 int index = txq->q.read_ptr;
435 tfd = &tfd_tmp[index];
437 /* Sanity check on number of chunks */
438 num_tbs = iwl_tfd_get_num_tbs(tfd);
440 if (num_tbs >= IWL_NUM_OF_TBS) {
441 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
442 /* @todo issue fatal error, it is quite serious situation */
448 pci_unmap_single(dev,
449 pci_unmap_addr(&txq->meta[index], mapping),
450 pci_unmap_len(&txq->meta[index], len),
451 PCI_DMA_BIDIRECTIONAL);
453 /* Unmap chunks, if any. */
454 for (i = 1; i < num_tbs; i++) {
455 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
456 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
459 dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
460 txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
465 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
466 struct iwl_tx_queue *txq,
467 dma_addr_t addr, u16 len,
471 struct iwl_tfd *tfd, *tfd_tmp;
475 tfd_tmp = (struct iwl_tfd *)txq->tfds;
476 tfd = &tfd_tmp[q->write_ptr];
479 memset(tfd, 0, sizeof(*tfd));
481 num_tbs = iwl_tfd_get_num_tbs(tfd);
483 /* Each TFD can point to a maximum 20 Tx buffers */
484 if (num_tbs >= IWL_NUM_OF_TBS) {
485 IWL_ERR(priv, "Error can not send more than %d chunks\n",
490 BUG_ON(addr & ~DMA_BIT_MASK(36));
491 if (unlikely(addr & ~IWL_TX_DMA_MASK))
492 IWL_ERR(priv, "Unaligned address = %llx\n",
493 (unsigned long long)addr);
495 iwl_tfd_set_tb(tfd, num_tbs, addr, len);
501 * Tell nic where to find circular buffer of Tx Frame Descriptors for
502 * given Tx queue, and enable the DMA channel used for that queue.
504 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
505 * channels supported in hardware.
507 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
508 struct iwl_tx_queue *txq)
510 int txq_id = txq->q.id;
512 /* Circular buffer (TFD queue in DRAM) physical base address */
513 iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
514 txq->q.dma_addr >> 8);
519 /******************************************************************************
521 * Generic RX handler implementations
523 ******************************************************************************/
524 static void iwl_rx_reply_alive(struct iwl_priv *priv,
525 struct iwl_rx_mem_buffer *rxb)
527 struct iwl_rx_packet *pkt = rxb_addr(rxb);
528 struct iwl_alive_resp *palive;
529 struct delayed_work *pwork;
531 palive = &pkt->u.alive_frame;
533 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
535 palive->is_valid, palive->ver_type,
536 palive->ver_subtype);
538 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
539 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
540 memcpy(&priv->card_alive_init,
542 sizeof(struct iwl_init_alive_resp));
543 pwork = &priv->init_alive_start;
545 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
546 memcpy(&priv->card_alive, &pkt->u.alive_frame,
547 sizeof(struct iwl_alive_resp));
548 pwork = &priv->alive_start;
551 /* We delay the ALIVE response by 5ms to
552 * give the HW RF Kill time to activate... */
553 if (palive->is_valid == UCODE_VALID_OK)
554 queue_delayed_work(priv->workqueue, pwork,
555 msecs_to_jiffies(5));
557 IWL_WARN(priv, "uCode did not respond OK.\n");
560 static void iwl_bg_beacon_update(struct work_struct *work)
562 struct iwl_priv *priv =
563 container_of(work, struct iwl_priv, beacon_update);
564 struct sk_buff *beacon;
566 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
567 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
570 IWL_ERR(priv, "update beacon failed\n");
574 mutex_lock(&priv->mutex);
575 /* new beacon skb is allocated every time; dispose previous.*/
576 if (priv->ibss_beacon)
577 dev_kfree_skb(priv->ibss_beacon);
579 priv->ibss_beacon = beacon;
580 mutex_unlock(&priv->mutex);
582 iwl_send_beacon_cmd(priv);
586 * iwl_bg_statistics_periodic - Timer callback to queue statistics
588 * This callback is provided in order to send a statistics request.
590 * This timer function is continually reset to execute within
591 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
592 * was received. We need to ensure we receive the statistics in order
593 * to update the temperature used for calibrating the TXPOWER.
595 static void iwl_bg_statistics_periodic(unsigned long data)
597 struct iwl_priv *priv = (struct iwl_priv *)data;
599 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
602 /* dont send host command if rf-kill is on */
603 if (!iwl_is_ready_rf(priv))
606 iwl_send_statistics_request(priv, CMD_ASYNC);
609 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
610 struct iwl_rx_mem_buffer *rxb)
612 #ifdef CONFIG_IWLWIFI_DEBUG
613 struct iwl_rx_packet *pkt = rxb_addr(rxb);
614 struct iwl4965_beacon_notif *beacon =
615 (struct iwl4965_beacon_notif *)pkt->u.raw;
616 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
618 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
619 "tsf %d %d rate %d\n",
620 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
621 beacon->beacon_notify_hdr.failure_frame,
622 le32_to_cpu(beacon->ibss_mgr_status),
623 le32_to_cpu(beacon->high_tsf),
624 le32_to_cpu(beacon->low_tsf), rate);
627 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
628 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
629 queue_work(priv->workqueue, &priv->beacon_update);
632 /* Handle notification from uCode that card's power state is changing
633 * due to software, hardware, or critical temperature RFKILL */
634 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
635 struct iwl_rx_mem_buffer *rxb)
637 struct iwl_rx_packet *pkt = rxb_addr(rxb);
638 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
639 unsigned long status = priv->status;
641 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
642 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
643 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
645 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
648 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
649 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
651 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
652 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
654 if (!(flags & RXON_CARD_DISABLED)) {
655 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
656 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
657 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
658 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
660 if (flags & RF_CARD_DISABLED)
661 iwl_tt_enter_ct_kill(priv);
663 if (!(flags & RF_CARD_DISABLED))
664 iwl_tt_exit_ct_kill(priv);
666 if (flags & HW_CARD_DISABLED)
667 set_bit(STATUS_RF_KILL_HW, &priv->status);
669 clear_bit(STATUS_RF_KILL_HW, &priv->status);
672 if (!(flags & RXON_CARD_DISABLED))
673 iwl_scan_cancel(priv);
675 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
676 test_bit(STATUS_RF_KILL_HW, &priv->status)))
677 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
678 test_bit(STATUS_RF_KILL_HW, &priv->status));
680 wake_up_interruptible(&priv->wait_command_queue);
683 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
685 if (src == IWL_PWR_SRC_VAUX) {
686 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
687 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
688 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
689 ~APMG_PS_CTRL_MSK_PWR_SRC);
691 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
692 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
693 ~APMG_PS_CTRL_MSK_PWR_SRC);
700 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
702 * Setup the RX handlers for each of the reply types sent from the uCode
705 * This function chains into the hardware specific files for them to setup
706 * any hardware specific handlers as well.
708 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
710 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
711 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
712 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
713 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
714 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
715 iwl_rx_pm_debug_statistics_notif;
716 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
719 * The same handler is used for both the REPLY to a discrete
720 * statistics request from the host as well as for the periodic
721 * statistics notifications (after received beacons) from the uCode.
723 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
724 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
726 iwl_setup_spectrum_handlers(priv);
727 iwl_setup_rx_scan_handlers(priv);
729 /* status change handler */
730 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
732 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
733 iwl_rx_missed_beacon_notif;
735 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
736 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
738 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
739 /* Set up hardware specific Rx handlers */
740 priv->cfg->ops->lib->rx_handler_setup(priv);
744 * iwl_rx_handle - Main entry function for receiving responses from uCode
746 * Uses the priv->rx_handlers callback function array to invoke
747 * the appropriate handlers, including command responses,
748 * frame-received notifications, and other notifications.
750 void iwl_rx_handle(struct iwl_priv *priv)
752 struct iwl_rx_mem_buffer *rxb;
753 struct iwl_rx_packet *pkt;
754 struct iwl_rx_queue *rxq = &priv->rxq;
762 /* uCode's read index (stored in shared DRAM) indicates the last Rx
763 * buffer that the driver may process (last buffer filled by ucode). */
764 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
767 /* Rx interrupt, but nothing sent from uCode */
769 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
771 /* calculate total frames need to be restock after handling RX */
772 total_empty = r - priv->rxq.write_actual;
774 total_empty += RX_QUEUE_SIZE;
776 if (total_empty > (RX_QUEUE_SIZE / 2))
782 /* If an RXB doesn't have a Rx queue slot associated with it,
783 * then a bug has been introduced in the queue refilling
784 * routines -- catch it here */
787 rxq->queue[i] = NULL;
789 pci_unmap_page(priv->pci_dev, rxb->page_dma,
790 PAGE_SIZE << priv->hw_params.rx_page_order,
794 trace_iwlwifi_dev_rx(priv, pkt,
795 le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK);
797 /* Reclaim a command buffer only if this packet is a response
798 * to a (driver-originated) command.
799 * If the packet (e.g. Rx frame) originated from uCode,
800 * there is no command buffer to reclaim.
801 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
802 * but apparently a few don't get set; catch them here. */
803 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
804 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
805 (pkt->hdr.cmd != REPLY_RX) &&
806 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
807 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
808 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
809 (pkt->hdr.cmd != REPLY_TX);
811 /* Based on type of command response or notification,
812 * handle those that need handling via function in
813 * rx_handlers table. See iwl_setup_rx_handlers() */
814 if (priv->rx_handlers[pkt->hdr.cmd]) {
815 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
816 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
817 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
818 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
820 /* No handling needed */
822 "r %d i %d No handler needed for %s, 0x%02x\n",
823 r, i, get_cmd_string(pkt->hdr.cmd),
828 /* Invoke any callbacks, transfer the buffer to caller,
829 * and fire off the (possibly) blocking iwl_send_cmd()
830 * as we reclaim the driver command queue */
831 if (rxb && rxb->page)
832 iwl_tx_cmd_complete(priv, rxb);
834 IWL_WARN(priv, "Claim null rxb?\n");
837 /* For now we just don't re-use anything. We can tweak this
838 * later to try and re-use notification packets and SKBs that
839 * fail to Rx correctly */
840 if (rxb->page != NULL) {
841 priv->alloc_rxb_page--;
842 __free_pages(rxb->page, priv->hw_params.rx_page_order);
846 spin_lock_irqsave(&rxq->lock, flags);
847 list_add_tail(&rxb->list, &priv->rxq.rx_used);
848 spin_unlock_irqrestore(&rxq->lock, flags);
849 i = (i + 1) & RX_QUEUE_MASK;
850 /* If there are a lot of unused frames,
851 * restock the Rx queue so ucode wont assert. */
856 iwl_rx_replenish_now(priv);
862 /* Backtrack one entry */
865 iwl_rx_replenish_now(priv);
867 iwl_rx_queue_restock(priv);
870 /* call this function to flush any scheduled tasklet */
871 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
873 /* wait to make sure we flush pending tasklet*/
874 synchronize_irq(priv->pci_dev->irq);
875 tasklet_kill(&priv->irq_tasklet);
878 static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
880 u32 inta, handled = 0;
883 #ifdef CONFIG_IWLWIFI_DEBUG
887 spin_lock_irqsave(&priv->lock, flags);
889 /* Ack/clear/reset pending uCode interrupts.
890 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
891 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
892 inta = iwl_read32(priv, CSR_INT);
893 iwl_write32(priv, CSR_INT, inta);
895 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
896 * Any new interrupts that happen after this, either while we're
897 * in this tasklet, or later, will show up in next ISR/tasklet. */
898 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
899 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
901 #ifdef CONFIG_IWLWIFI_DEBUG
902 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
904 inta_mask = iwl_read32(priv, CSR_INT_MASK);
905 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
906 inta, inta_mask, inta_fh);
910 spin_unlock_irqrestore(&priv->lock, flags);
912 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
913 * atomic, make sure that inta covers all the interrupts that
914 * we've discovered, even if FH interrupt came in just after
915 * reading CSR_INT. */
916 if (inta_fh & CSR49_FH_INT_RX_MASK)
917 inta |= CSR_INT_BIT_FH_RX;
918 if (inta_fh & CSR49_FH_INT_TX_MASK)
919 inta |= CSR_INT_BIT_FH_TX;
921 /* Now service all interrupt bits discovered above. */
922 if (inta & CSR_INT_BIT_HW_ERR) {
923 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
925 /* Tell the device to stop sending interrupts */
926 iwl_disable_interrupts(priv);
928 priv->isr_stats.hw++;
929 iwl_irq_handle_error(priv);
931 handled |= CSR_INT_BIT_HW_ERR;
936 #ifdef CONFIG_IWLWIFI_DEBUG
937 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
938 /* NIC fires this, but we don't use it, redundant with WAKEUP */
939 if (inta & CSR_INT_BIT_SCD) {
940 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
941 "the frame/frames.\n");
942 priv->isr_stats.sch++;
945 /* Alive notification via Rx interrupt will do the real work */
946 if (inta & CSR_INT_BIT_ALIVE) {
947 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
948 priv->isr_stats.alive++;
952 /* Safely ignore these bits for debug checks below */
953 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
955 /* HW RF KILL switch toggled */
956 if (inta & CSR_INT_BIT_RF_KILL) {
958 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
959 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
962 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
963 hw_rf_kill ? "disable radio" : "enable radio");
965 priv->isr_stats.rfkill++;
967 /* driver only loads ucode once setting the interface up.
968 * the driver allows loading the ucode even if the radio
969 * is killed. Hence update the killswitch state here. The
970 * rfkill handler will care about restarting if needed.
972 if (!test_bit(STATUS_ALIVE, &priv->status)) {
974 set_bit(STATUS_RF_KILL_HW, &priv->status);
976 clear_bit(STATUS_RF_KILL_HW, &priv->status);
977 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
980 handled |= CSR_INT_BIT_RF_KILL;
983 /* Chip got too hot and stopped itself */
984 if (inta & CSR_INT_BIT_CT_KILL) {
985 IWL_ERR(priv, "Microcode CT kill error detected.\n");
986 priv->isr_stats.ctkill++;
987 handled |= CSR_INT_BIT_CT_KILL;
990 /* Error detected by uCode */
991 if (inta & CSR_INT_BIT_SW_ERR) {
992 IWL_ERR(priv, "Microcode SW error detected. "
993 " Restarting 0x%X.\n", inta);
994 priv->isr_stats.sw++;
995 priv->isr_stats.sw_err = inta;
996 iwl_irq_handle_error(priv);
997 handled |= CSR_INT_BIT_SW_ERR;
1000 /* uCode wakes up after power-down sleep */
1001 if (inta & CSR_INT_BIT_WAKEUP) {
1002 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1003 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1004 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1005 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1006 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1007 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1008 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1009 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1011 priv->isr_stats.wakeup++;
1013 handled |= CSR_INT_BIT_WAKEUP;
1016 /* All uCode command responses, including Tx command responses,
1017 * Rx "responses" (frame-received notification), and other
1018 * notifications from uCode come through here*/
1019 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1020 iwl_rx_handle(priv);
1021 priv->isr_stats.rx++;
1022 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1025 if (inta & CSR_INT_BIT_FH_TX) {
1026 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1027 priv->isr_stats.tx++;
1028 handled |= CSR_INT_BIT_FH_TX;
1029 /* FH finished to write, send event */
1030 priv->ucode_write_complete = 1;
1031 wake_up_interruptible(&priv->wait_command_queue);
1034 if (inta & ~handled) {
1035 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1036 priv->isr_stats.unhandled++;
1039 if (inta & ~(priv->inta_mask)) {
1040 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1041 inta & ~priv->inta_mask);
1042 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1045 /* Re-enable all interrupts */
1046 /* only Re-enable if diabled by irq */
1047 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1048 iwl_enable_interrupts(priv);
1050 #ifdef CONFIG_IWLWIFI_DEBUG
1051 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1052 inta = iwl_read32(priv, CSR_INT);
1053 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1054 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1055 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1056 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1061 /* tasklet for iwlagn interrupt */
1062 static void iwl_irq_tasklet(struct iwl_priv *priv)
1066 unsigned long flags;
1067 #ifdef CONFIG_IWLWIFI_DEBUG
1071 spin_lock_irqsave(&priv->lock, flags);
1073 /* Ack/clear/reset pending uCode interrupts.
1074 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1076 iwl_write32(priv, CSR_INT, priv->inta);
1080 #ifdef CONFIG_IWLWIFI_DEBUG
1081 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
1082 /* just for debug */
1083 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1084 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1089 spin_unlock_irqrestore(&priv->lock, flags);
1091 /* saved interrupt in inta variable now we can reset priv->inta */
1094 /* Now service all interrupt bits discovered above. */
1095 if (inta & CSR_INT_BIT_HW_ERR) {
1096 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
1098 /* Tell the device to stop sending interrupts */
1099 iwl_disable_interrupts(priv);
1101 priv->isr_stats.hw++;
1102 iwl_irq_handle_error(priv);
1104 handled |= CSR_INT_BIT_HW_ERR;
1109 #ifdef CONFIG_IWLWIFI_DEBUG
1110 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
1111 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1112 if (inta & CSR_INT_BIT_SCD) {
1113 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1114 "the frame/frames.\n");
1115 priv->isr_stats.sch++;
1118 /* Alive notification via Rx interrupt will do the real work */
1119 if (inta & CSR_INT_BIT_ALIVE) {
1120 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1121 priv->isr_stats.alive++;
1125 /* Safely ignore these bits for debug checks below */
1126 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1128 /* HW RF KILL switch toggled */
1129 if (inta & CSR_INT_BIT_RF_KILL) {
1131 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1132 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1135 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
1136 hw_rf_kill ? "disable radio" : "enable radio");
1138 priv->isr_stats.rfkill++;
1140 /* driver only loads ucode once setting the interface up.
1141 * the driver allows loading the ucode even if the radio
1142 * is killed. Hence update the killswitch state here. The
1143 * rfkill handler will care about restarting if needed.
1145 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1147 set_bit(STATUS_RF_KILL_HW, &priv->status);
1149 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1150 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
1153 handled |= CSR_INT_BIT_RF_KILL;
1156 /* Chip got too hot and stopped itself */
1157 if (inta & CSR_INT_BIT_CT_KILL) {
1158 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1159 priv->isr_stats.ctkill++;
1160 handled |= CSR_INT_BIT_CT_KILL;
1163 /* Error detected by uCode */
1164 if (inta & CSR_INT_BIT_SW_ERR) {
1165 IWL_ERR(priv, "Microcode SW error detected. "
1166 " Restarting 0x%X.\n", inta);
1167 priv->isr_stats.sw++;
1168 priv->isr_stats.sw_err = inta;
1169 iwl_irq_handle_error(priv);
1170 handled |= CSR_INT_BIT_SW_ERR;
1173 /* uCode wakes up after power-down sleep */
1174 if (inta & CSR_INT_BIT_WAKEUP) {
1175 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1176 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1177 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1178 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1179 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1180 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1181 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1182 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1184 priv->isr_stats.wakeup++;
1186 handled |= CSR_INT_BIT_WAKEUP;
1189 /* All uCode command responses, including Tx command responses,
1190 * Rx "responses" (frame-received notification), and other
1191 * notifications from uCode come through here*/
1192 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1193 CSR_INT_BIT_RX_PERIODIC)) {
1194 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
1195 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1196 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1197 iwl_write32(priv, CSR_FH_INT_STATUS,
1198 CSR49_FH_INT_RX_MASK);
1200 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1201 handled |= CSR_INT_BIT_RX_PERIODIC;
1202 iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1204 /* Sending RX interrupt require many steps to be done in the
1206 * 1- write interrupt to current index in ICT table.
1208 * 3- update RX shared data to indicate last write index.
1209 * 4- send interrupt.
1210 * This could lead to RX race, driver could receive RX interrupt
1211 * but the shared data changes does not reflect this.
1212 * this could lead to RX race, RX periodic will solve this race
1214 iwl_write32(priv, CSR_INT_PERIODIC_REG,
1215 CSR_INT_PERIODIC_DIS);
1216 iwl_rx_handle(priv);
1217 /* Only set RX periodic if real RX is received. */
1218 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
1219 iwl_write32(priv, CSR_INT_PERIODIC_REG,
1220 CSR_INT_PERIODIC_ENA);
1222 priv->isr_stats.rx++;
1225 if (inta & CSR_INT_BIT_FH_TX) {
1226 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
1227 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1228 priv->isr_stats.tx++;
1229 handled |= CSR_INT_BIT_FH_TX;
1230 /* FH finished to write, send event */
1231 priv->ucode_write_complete = 1;
1232 wake_up_interruptible(&priv->wait_command_queue);
1235 if (inta & ~handled) {
1236 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1237 priv->isr_stats.unhandled++;
1240 if (inta & ~(priv->inta_mask)) {
1241 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1242 inta & ~priv->inta_mask);
1245 /* Re-enable all interrupts */
1246 /* only Re-enable if diabled by irq */
1247 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1248 iwl_enable_interrupts(priv);
1252 /******************************************************************************
1254 * uCode download functions
1256 ******************************************************************************/
1258 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1260 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1261 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1262 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1263 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1264 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1265 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1268 static void iwl_nic_start(struct iwl_priv *priv)
1270 /* Remove all resets to allow NIC to operate */
1271 iwl_write32(priv, CSR_RESET, 0);
1276 * iwl_read_ucode - Read uCode images from disk file.
1278 * Copy into buffers for card to fetch via bus-mastering
1280 static int iwl_read_ucode(struct iwl_priv *priv)
1282 struct iwl_ucode_header *ucode;
1283 int ret = -EINVAL, index;
1284 const struct firmware *ucode_raw;
1285 const char *name_pre = priv->cfg->fw_name_pre;
1286 const unsigned int api_max = priv->cfg->ucode_api_max;
1287 const unsigned int api_min = priv->cfg->ucode_api_min;
1292 u32 inst_size, data_size, init_size, init_data_size, boot_size;
1295 /* Ask kernel firmware_class module to get the boot firmware off disk.
1296 * request_firmware() is synchronous, file is in memory on return. */
1297 for (index = api_max; index >= api_min; index--) {
1298 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1299 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1301 IWL_ERR(priv, "%s firmware file req failed: %d\n",
1308 if (index < api_max)
1309 IWL_ERR(priv, "Loaded firmware %s, "
1310 "which is deprecated. "
1311 "Please use API v%u instead.\n",
1314 IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1315 buf, ucode_raw->size);
1323 /* Make sure that we got at least the v1 header! */
1324 if (ucode_raw->size < priv->cfg->ops->ucode->get_header_size(1)) {
1325 IWL_ERR(priv, "File size way too small!\n");
1330 /* Data from ucode file: header followed by uCode images */
1331 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1333 priv->ucode_ver = le32_to_cpu(ucode->ver);
1334 api_ver = IWL_UCODE_API(priv->ucode_ver);
1335 build = priv->cfg->ops->ucode->get_build(ucode, api_ver);
1336 inst_size = priv->cfg->ops->ucode->get_inst_size(ucode, api_ver);
1337 data_size = priv->cfg->ops->ucode->get_data_size(ucode, api_ver);
1338 init_size = priv->cfg->ops->ucode->get_init_size(ucode, api_ver);
1340 priv->cfg->ops->ucode->get_init_data_size(ucode, api_ver);
1341 boot_size = priv->cfg->ops->ucode->get_boot_size(ucode, api_ver);
1342 src = priv->cfg->ops->ucode->get_data(ucode, api_ver);
1344 /* api_ver should match the api version forming part of the
1345 * firmware filename ... but we don't check for that and only rely
1346 * on the API version read from firmware header from here on forward */
1348 if (api_ver < api_min || api_ver > api_max) {
1349 IWL_ERR(priv, "Driver unable to support your firmware API. "
1350 "Driver supports v%u, firmware is v%u.\n",
1352 priv->ucode_ver = 0;
1356 if (api_ver != api_max)
1357 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1358 "got v%u. New firmware can be obtained "
1359 "from http://www.intellinuxwireless.org.\n",
1362 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1363 IWL_UCODE_MAJOR(priv->ucode_ver),
1364 IWL_UCODE_MINOR(priv->ucode_ver),
1365 IWL_UCODE_API(priv->ucode_ver),
1366 IWL_UCODE_SERIAL(priv->ucode_ver));
1369 IWL_DEBUG_INFO(priv, "Build %u\n", build);
1371 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
1372 IWL_DEBUG_INFO(priv, "NVM Type: %s, version: 0x%x\n",
1373 (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
1374 ? "OTP" : "EEPROM", eeprom_ver);
1376 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1378 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1380 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1382 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1384 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1386 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1389 /* Verify size of file vs. image size info in file's header */
1390 if (ucode_raw->size !=
1391 priv->cfg->ops->ucode->get_header_size(api_ver) +
1392 inst_size + data_size + init_size +
1393 init_data_size + boot_size) {
1395 IWL_DEBUG_INFO(priv,
1396 "uCode file size %d does not match expected size\n",
1397 (int)ucode_raw->size);
1402 /* Verify that uCode images will fit in card's SRAM */
1403 if (inst_size > priv->hw_params.max_inst_size) {
1404 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1410 if (data_size > priv->hw_params.max_data_size) {
1411 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1416 if (init_size > priv->hw_params.max_inst_size) {
1417 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1422 if (init_data_size > priv->hw_params.max_data_size) {
1423 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1428 if (boot_size > priv->hw_params.max_bsm_size) {
1429 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1435 /* Allocate ucode buffers for card's bus-master loading ... */
1437 /* Runtime instructions and 2 copies of data:
1438 * 1) unmodified from disk
1439 * 2) backup cache for save/restore during power-downs */
1440 priv->ucode_code.len = inst_size;
1441 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1443 priv->ucode_data.len = data_size;
1444 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1446 priv->ucode_data_backup.len = data_size;
1447 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1449 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1450 !priv->ucode_data_backup.v_addr)
1453 /* Initialization instructions and data */
1454 if (init_size && init_data_size) {
1455 priv->ucode_init.len = init_size;
1456 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1458 priv->ucode_init_data.len = init_data_size;
1459 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1461 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1465 /* Bootstrap (instructions only, no data) */
1467 priv->ucode_boot.len = boot_size;
1468 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1470 if (!priv->ucode_boot.v_addr)
1474 /* Copy images into buffers for card's bus-master reads ... */
1476 /* Runtime instructions (first block of data in file) */
1478 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1479 memcpy(priv->ucode_code.v_addr, src, len);
1482 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1483 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1485 /* Runtime data (2nd block)
1486 * NOTE: Copy into backup buffer will be done in iwl_up() */
1488 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1489 memcpy(priv->ucode_data.v_addr, src, len);
1490 memcpy(priv->ucode_data_backup.v_addr, src, len);
1493 /* Initialization instructions (3rd block) */
1496 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1498 memcpy(priv->ucode_init.v_addr, src, len);
1502 /* Initialization data (4th block) */
1503 if (init_data_size) {
1504 len = init_data_size;
1505 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1507 memcpy(priv->ucode_init_data.v_addr, src, len);
1511 /* Bootstrap instructions (5th block) */
1513 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1514 memcpy(priv->ucode_boot.v_addr, src, len);
1516 /* We have our copies now, allow OS release its copies */
1517 release_firmware(ucode_raw);
1521 IWL_ERR(priv, "failed to allocate pci memory\n");
1523 iwl_dealloc_ucode_pci(priv);
1526 release_firmware(ucode_raw);
1532 #ifdef CONFIG_IWLWIFI_DEBUG
1533 static const char *desc_lookup_text[] = {
1538 "NMI_INTERRUPT_WDG",
1542 "HW_ERROR_TUNE_LOCK",
1543 "HW_ERROR_TEMPERATURE",
1544 "ILLEGAL_CHAN_FREQ",
1547 "NMI_INTERRUPT_HOST",
1548 "NMI_INTERRUPT_ACTION_PT",
1549 "NMI_INTERRUPT_UNKNOWN",
1550 "UCODE_VERSION_MISMATCH",
1551 "HW_ERROR_ABS_LOCK",
1552 "HW_ERROR_CAL_LOCK_FAIL",
1553 "NMI_INTERRUPT_INST_ACTION_PT",
1554 "NMI_INTERRUPT_DATA_ACTION_PT",
1556 "NMI_INTERRUPT_TRM",
1557 "NMI_INTERRUPT_BREAK_POINT"
1565 static const char *desc_lookup(int i)
1567 int max = ARRAY_SIZE(desc_lookup_text) - 1;
1569 if (i < 0 || i > max)
1572 return desc_lookup_text[i];
1575 #define ERROR_START_OFFSET (1 * sizeof(u32))
1576 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1578 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1581 u32 desc, time, count, base, data1;
1582 u32 blink1, blink2, ilink1, ilink2;
1584 if (priv->ucode_type == UCODE_INIT)
1585 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
1587 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
1589 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1590 IWL_ERR(priv, "Not valid error log pointer 0x%08X\n", base);
1594 count = iwl_read_targ_mem(priv, base);
1596 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
1597 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1598 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1599 priv->status, count);
1602 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
1603 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
1604 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
1605 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
1606 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
1607 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
1608 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
1609 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
1610 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
1612 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
1613 blink1, blink2, ilink1, ilink2);
1615 IWL_ERR(priv, "Desc Time "
1616 "data1 data2 line\n");
1617 IWL_ERR(priv, "%-28s (#%02d) %010u 0x%08X 0x%08X %u\n",
1618 desc_lookup(desc), desc, time, data1, data2, line);
1619 IWL_ERR(priv, "blink1 blink2 ilink1 ilink2\n");
1620 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
1625 #define EVENT_START_OFFSET (4 * sizeof(u32))
1628 * iwl_print_event_log - Dump error event log to syslog
1631 static void iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1632 u32 num_events, u32 mode)
1635 u32 base; /* SRAM byte address of event log header */
1636 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1637 u32 ptr; /* SRAM byte address of log data */
1638 u32 ev, time, data; /* event log data */
1640 if (num_events == 0)
1642 if (priv->ucode_type == UCODE_INIT)
1643 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1645 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1648 event_size = 2 * sizeof(u32);
1650 event_size = 3 * sizeof(u32);
1652 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1654 /* "time" is actually "data" for mode 0 (no timestamp).
1655 * place event id # at far right for easier visual parsing. */
1656 for (i = 0; i < num_events; i++) {
1657 ev = iwl_read_targ_mem(priv, ptr);
1659 time = iwl_read_targ_mem(priv, ptr);
1663 trace_iwlwifi_dev_ucode_event(priv, 0, time, ev);
1664 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n", time, ev);
1666 data = iwl_read_targ_mem(priv, ptr);
1668 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1670 trace_iwlwifi_dev_ucode_event(priv, time, data, ev);
1675 void iwl_dump_nic_event_log(struct iwl_priv *priv)
1677 u32 base; /* SRAM byte address of event log header */
1678 u32 capacity; /* event log capacity in # entries */
1679 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1680 u32 num_wraps; /* # times uCode wrapped to top of log */
1681 u32 next_entry; /* index of next entry to be written by uCode */
1682 u32 size; /* # entries that we'll print */
1684 if (priv->ucode_type == UCODE_INIT)
1685 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
1687 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
1689 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1690 IWL_ERR(priv, "Invalid event log pointer 0x%08X\n", base);
1694 /* event log header */
1695 capacity = iwl_read_targ_mem(priv, base);
1696 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1697 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1698 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1700 size = num_wraps ? capacity : next_entry;
1702 /* bail out if nothing in log */
1704 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1708 IWL_ERR(priv, "Start IWL Event Log Dump: display count %d, wraps %d\n",
1711 /* if uCode has wrapped back to top of log, start at the oldest entry,
1712 * i.e the next one that uCode would fill. */
1714 iwl_print_event_log(priv, next_entry,
1715 capacity - next_entry, mode);
1716 /* (then/else) start at top of log */
1717 iwl_print_event_log(priv, 0, next_entry, mode);
1723 * iwl_alive_start - called after REPLY_ALIVE notification received
1724 * from protocol/runtime uCode (initialization uCode's
1725 * Alive gets handled by iwl_init_alive_start()).
1727 static void iwl_alive_start(struct iwl_priv *priv)
1731 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1733 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1734 /* We had an error bringing up the hardware, so take it
1735 * all the way back down so we can try again */
1736 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1740 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1741 * This is a paranoid check, because we would not have gotten the
1742 * "runtime" alive if code weren't properly loaded. */
1743 if (iwl_verify_ucode(priv)) {
1744 /* Runtime instruction load was bad;
1745 * take it all the way back down so we can try again */
1746 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1750 iwl_clear_stations_table(priv);
1751 ret = priv->cfg->ops->lib->alive_notify(priv);
1754 "Could not complete ALIVE transition [ntf]: %d\n", ret);
1758 /* After the ALIVE response, we can send host commands to the uCode */
1759 set_bit(STATUS_ALIVE, &priv->status);
1761 if (iwl_is_rfkill(priv))
1764 ieee80211_wake_queues(priv->hw);
1766 priv->active_rate = priv->rates_mask;
1767 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1769 /* Configure Tx antenna selection based on H/W config */
1770 if (priv->cfg->ops->hcmd->set_tx_ant)
1771 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
1773 if (iwl_is_associated(priv)) {
1774 struct iwl_rxon_cmd *active_rxon =
1775 (struct iwl_rxon_cmd *)&priv->active_rxon;
1776 /* apply any changes in staging */
1777 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
1778 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1780 /* Initialize our rx_config data */
1781 iwl_connection_init_rx_config(priv, priv->iw_mode);
1783 if (priv->cfg->ops->hcmd->set_rxon_chain)
1784 priv->cfg->ops->hcmd->set_rxon_chain(priv);
1786 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1789 /* Configure Bluetooth device coexistence support */
1790 iwl_send_bt_config(priv);
1792 iwl_reset_run_time_calib(priv);
1794 /* Configure the adapter for unassociated operation */
1795 iwlcore_commit_rxon(priv);
1797 /* At this point, the NIC is initialized and operational */
1798 iwl_rf_kill_ct_config(priv);
1800 iwl_leds_init(priv);
1802 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1803 set_bit(STATUS_READY, &priv->status);
1804 wake_up_interruptible(&priv->wait_command_queue);
1806 iwl_power_update_mode(priv, true);
1808 /* reassociate for ADHOC mode */
1809 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1810 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1813 iwl_mac_beacon_update(priv->hw, beacon);
1817 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1818 iwl_set_mode(priv, priv->iw_mode);
1823 queue_work(priv->workqueue, &priv->restart);
1826 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1828 static void __iwl_down(struct iwl_priv *priv)
1830 unsigned long flags;
1831 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1833 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1836 set_bit(STATUS_EXIT_PENDING, &priv->status);
1838 iwl_clear_stations_table(priv);
1840 /* Unblock any waiting calls */
1841 wake_up_interruptible_all(&priv->wait_command_queue);
1843 /* Wipe out the EXIT_PENDING status bit if we are not actually
1844 * exiting the module */
1846 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1848 /* stop and reset the on-board processor */
1849 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1851 /* tell the device to stop sending interrupts */
1852 spin_lock_irqsave(&priv->lock, flags);
1853 iwl_disable_interrupts(priv);
1854 spin_unlock_irqrestore(&priv->lock, flags);
1855 iwl_synchronize_irq(priv);
1857 if (priv->mac80211_registered)
1858 ieee80211_stop_queues(priv->hw);
1860 /* If we have not previously called iwl_init() then
1861 * clear all bits but the RF Kill bit and return */
1862 if (!iwl_is_init(priv)) {
1863 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1865 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1866 STATUS_GEO_CONFIGURED |
1867 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1868 STATUS_EXIT_PENDING;
1872 /* ...otherwise clear out all the status bits but the RF Kill
1873 * bit and continue taking the NIC down. */
1874 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1876 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1877 STATUS_GEO_CONFIGURED |
1878 test_bit(STATUS_FW_ERROR, &priv->status) <<
1880 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1881 STATUS_EXIT_PENDING;
1883 /* device going down, Stop using ICT table */
1884 iwl_disable_ict(priv);
1885 spin_lock_irqsave(&priv->lock, flags);
1886 iwl_clear_bit(priv, CSR_GP_CNTRL,
1887 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1888 spin_unlock_irqrestore(&priv->lock, flags);
1890 iwl_txq_ctx_stop(priv);
1893 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1894 APMG_CLK_VAL_DMA_CLK_RQT);
1898 /* Stop the device, and put it in low power state */
1899 priv->cfg->ops->lib->apm_ops.stop(priv);
1902 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1904 if (priv->ibss_beacon)
1905 dev_kfree_skb(priv->ibss_beacon);
1906 priv->ibss_beacon = NULL;
1908 /* clear out any free frames */
1909 iwl_clear_free_frames(priv);
1912 static void iwl_down(struct iwl_priv *priv)
1914 mutex_lock(&priv->mutex);
1916 mutex_unlock(&priv->mutex);
1918 iwl_cancel_deferred_work(priv);
1921 #define HW_READY_TIMEOUT (50)
1923 static int iwl_set_hw_ready(struct iwl_priv *priv)
1927 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1928 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
1930 /* See if we got it */
1931 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
1932 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
1933 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
1935 if (ret != -ETIMEDOUT)
1936 priv->hw_ready = true;
1938 priv->hw_ready = false;
1940 IWL_DEBUG_INFO(priv, "hardware %s\n",
1941 (priv->hw_ready == 1) ? "ready" : "not ready");
1945 static int iwl_prepare_card_hw(struct iwl_priv *priv)
1949 IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter \n");
1951 ret = iwl_set_hw_ready(priv);
1955 /* If HW is not ready, prepare the conditions to check again */
1956 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1957 CSR_HW_IF_CONFIG_REG_PREPARE);
1959 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
1960 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
1961 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
1963 /* HW should be ready by now, check again. */
1964 if (ret != -ETIMEDOUT)
1965 iwl_set_hw_ready(priv);
1970 #define MAX_HW_RESTARTS 5
1972 static int __iwl_up(struct iwl_priv *priv)
1977 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1978 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1982 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
1983 IWL_ERR(priv, "ucode not available for device bringup\n");
1987 iwl_prepare_card_hw(priv);
1989 if (!priv->hw_ready) {
1990 IWL_WARN(priv, "Exit HW not ready\n");
1994 /* If platform's RF_KILL switch is NOT set to KILL */
1995 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1996 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1998 set_bit(STATUS_RF_KILL_HW, &priv->status);
2000 if (iwl_is_rfkill(priv)) {
2001 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
2003 iwl_enable_interrupts(priv);
2004 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
2008 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2010 ret = iwl_hw_nic_init(priv);
2012 IWL_ERR(priv, "Unable to init nic\n");
2016 /* make sure rfkill handshake bits are cleared */
2017 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2018 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2019 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2021 /* clear (again), then enable host interrupts */
2022 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2023 iwl_enable_interrupts(priv);
2025 /* really make sure rfkill handshake bits are cleared */
2026 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2027 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2029 /* Copy original ucode data image from disk into backup cache.
2030 * This will be used to initialize the on-board processor's
2031 * data SRAM for a clean start when the runtime program first loads. */
2032 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2033 priv->ucode_data.len);
2035 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2037 iwl_clear_stations_table(priv);
2039 /* load bootstrap state machine,
2040 * load bootstrap program into processor's memory,
2041 * prepare to load the "initialize" uCode */
2042 ret = priv->cfg->ops->lib->load_ucode(priv);
2045 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
2050 /* start card; "initialize" will load runtime ucode */
2051 iwl_nic_start(priv);
2053 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
2058 set_bit(STATUS_EXIT_PENDING, &priv->status);
2060 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2062 /* tried to restart and config the device for as long as our
2063 * patience could withstand */
2064 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2069 /*****************************************************************************
2071 * Workqueue callbacks
2073 *****************************************************************************/
2075 static void iwl_bg_init_alive_start(struct work_struct *data)
2077 struct iwl_priv *priv =
2078 container_of(data, struct iwl_priv, init_alive_start.work);
2080 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2083 mutex_lock(&priv->mutex);
2084 priv->cfg->ops->lib->init_alive_start(priv);
2085 mutex_unlock(&priv->mutex);
2088 static void iwl_bg_alive_start(struct work_struct *data)
2090 struct iwl_priv *priv =
2091 container_of(data, struct iwl_priv, alive_start.work);
2093 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2096 /* enable dram interrupt */
2097 iwl_reset_ict(priv);
2099 mutex_lock(&priv->mutex);
2100 iwl_alive_start(priv);
2101 mutex_unlock(&priv->mutex);
2104 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2106 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2107 run_time_calib_work);
2109 mutex_lock(&priv->mutex);
2111 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2112 test_bit(STATUS_SCANNING, &priv->status)) {
2113 mutex_unlock(&priv->mutex);
2117 if (priv->start_calib) {
2118 iwl_chain_noise_calibration(priv, &priv->statistics);
2120 iwl_sensitivity_calibration(priv, &priv->statistics);
2123 mutex_unlock(&priv->mutex);
2127 static void iwl_bg_up(struct work_struct *data)
2129 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2131 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2134 mutex_lock(&priv->mutex);
2136 mutex_unlock(&priv->mutex);
2139 static void iwl_bg_restart(struct work_struct *data)
2141 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2143 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2146 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2147 mutex_lock(&priv->mutex);
2150 mutex_unlock(&priv->mutex);
2152 ieee80211_restart_hw(priv->hw);
2155 queue_work(priv->workqueue, &priv->up);
2159 static void iwl_bg_rx_replenish(struct work_struct *data)
2161 struct iwl_priv *priv =
2162 container_of(data, struct iwl_priv, rx_replenish);
2164 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2167 mutex_lock(&priv->mutex);
2168 iwl_rx_replenish(priv);
2169 mutex_unlock(&priv->mutex);
2172 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2174 void iwl_post_associate(struct iwl_priv *priv)
2176 struct ieee80211_conf *conf = NULL;
2178 unsigned long flags;
2180 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2181 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2185 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
2186 priv->assoc_id, priv->active_rxon.bssid_addr);
2189 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2193 if (!priv->vif || !priv->is_open)
2196 iwl_scan_cancel_timeout(priv, 200);
2198 conf = ieee80211_get_hw_conf(priv->hw);
2200 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2201 iwlcore_commit_rxon(priv);
2203 iwl_setup_rxon_timing(priv);
2204 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2205 sizeof(priv->rxon_timing), &priv->rxon_timing);
2207 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2208 "Attempting to continue.\n");
2210 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2212 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2214 if (priv->cfg->ops->hcmd->set_rxon_chain)
2215 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2217 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2219 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
2220 priv->assoc_id, priv->beacon_int);
2222 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2223 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2225 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2227 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2228 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2229 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2231 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2233 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2234 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2238 iwlcore_commit_rxon(priv);
2240 switch (priv->iw_mode) {
2241 case NL80211_IFTYPE_STATION:
2244 case NL80211_IFTYPE_ADHOC:
2246 /* assume default assoc id */
2249 iwl_rxon_add_station(priv, priv->bssid, 0);
2250 iwl_send_beacon_cmd(priv);
2255 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2256 __func__, priv->iw_mode);
2260 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2261 priv->assoc_station_added = 1;
2263 spin_lock_irqsave(&priv->lock, flags);
2264 iwl_activate_qos(priv, 0);
2265 spin_unlock_irqrestore(&priv->lock, flags);
2267 /* the chain noise calibration will enabled PM upon completion
2268 * If chain noise has already been run, then we need to enable
2269 * power management here */
2270 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2271 iwl_power_update_mode(priv, false);
2273 /* Enable Rx differential gain and sensitivity calibrations */
2274 iwl_chain_noise_reset(priv);
2275 priv->start_calib = 1;
2279 /*****************************************************************************
2281 * mac80211 entry point functions
2283 *****************************************************************************/
2285 #define UCODE_READY_TIMEOUT (4 * HZ)
2288 * Not a mac80211 entry point function, but it fits in with all the
2289 * other mac80211 functions grouped here.
2291 static int iwl_setup_mac(struct iwl_priv *priv)
2294 struct ieee80211_hw *hw = priv->hw;
2295 hw->rate_control_algorithm = "iwl-agn-rs";
2297 /* Tell mac80211 our characteristics */
2298 hw->flags = IEEE80211_HW_SIGNAL_DBM |
2299 IEEE80211_HW_NOISE_DBM |
2300 IEEE80211_HW_AMPDU_AGGREGATION |
2301 IEEE80211_HW_SPECTRUM_MGMT;
2303 if (!priv->cfg->broken_powersave)
2304 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2305 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2307 hw->wiphy->interface_modes =
2308 BIT(NL80211_IFTYPE_STATION) |
2309 BIT(NL80211_IFTYPE_ADHOC);
2311 hw->wiphy->custom_regulatory = true;
2313 /* Firmware does not support this */
2314 hw->wiphy->disable_beacon_hints = true;
2317 * For now, disable PS by default because it affects
2318 * RX performance significantly.
2320 hw->wiphy->ps_default = false;
2322 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2323 /* we create the 802.11 header and a zero-length SSID element */
2324 hw->wiphy->max_scan_ie_len = IWL_MAX_PROBE_REQUEST - 24 - 2;
2326 /* Default value; 4 EDCA QOS priorities */
2329 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2331 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2332 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2333 &priv->bands[IEEE80211_BAND_2GHZ];
2334 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2335 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2336 &priv->bands[IEEE80211_BAND_5GHZ];
2338 ret = ieee80211_register_hw(priv->hw);
2340 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2343 priv->mac80211_registered = 1;
2349 static int iwl_mac_start(struct ieee80211_hw *hw)
2351 struct iwl_priv *priv = hw->priv;
2354 IWL_DEBUG_MAC80211(priv, "enter\n");
2356 /* we should be verifying the device is ready to be opened */
2357 mutex_lock(&priv->mutex);
2359 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2360 * ucode filename and max sizes are card-specific. */
2362 if (!priv->ucode_code.len) {
2363 ret = iwl_read_ucode(priv);
2365 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
2366 mutex_unlock(&priv->mutex);
2371 ret = __iwl_up(priv);
2373 mutex_unlock(&priv->mutex);
2378 if (iwl_is_rfkill(priv))
2381 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2383 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2384 * mac80211 will not be run successfully. */
2385 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2386 test_bit(STATUS_READY, &priv->status),
2387 UCODE_READY_TIMEOUT);
2389 if (!test_bit(STATUS_READY, &priv->status)) {
2390 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2391 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2396 iwl_led_start(priv);
2400 IWL_DEBUG_MAC80211(priv, "leave\n");
2404 static void iwl_mac_stop(struct ieee80211_hw *hw)
2406 struct iwl_priv *priv = hw->priv;
2408 IWL_DEBUG_MAC80211(priv, "enter\n");
2415 if (iwl_is_ready_rf(priv) || test_bit(STATUS_SCAN_HW, &priv->status)) {
2416 /* stop mac, cancel any scan request and clear
2417 * RXON_FILTER_ASSOC_MSK BIT
2419 mutex_lock(&priv->mutex);
2420 iwl_scan_cancel_timeout(priv, 100);
2421 mutex_unlock(&priv->mutex);
2426 flush_workqueue(priv->workqueue);
2428 /* enable interrupts again in order to receive rfkill changes */
2429 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2430 iwl_enable_interrupts(priv);
2432 IWL_DEBUG_MAC80211(priv, "leave\n");
2435 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2437 struct iwl_priv *priv = hw->priv;
2439 IWL_DEBUG_MACDUMP(priv, "enter\n");
2441 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2442 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2444 if (iwl_tx_skb(priv, skb))
2445 dev_kfree_skb_any(skb);
2447 IWL_DEBUG_MACDUMP(priv, "leave\n");
2448 return NETDEV_TX_OK;
2451 void iwl_config_ap(struct iwl_priv *priv)
2454 unsigned long flags;
2456 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2459 /* The following should be done only at AP bring up */
2460 if (!iwl_is_associated(priv)) {
2462 /* RXON - unassoc (to set timing command) */
2463 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2464 iwlcore_commit_rxon(priv);
2467 iwl_setup_rxon_timing(priv);
2468 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2469 sizeof(priv->rxon_timing), &priv->rxon_timing);
2471 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2472 "Attempting to continue.\n");
2474 if (priv->cfg->ops->hcmd->set_rxon_chain)
2475 priv->cfg->ops->hcmd->set_rxon_chain(priv);
2477 /* FIXME: what should be the assoc_id for AP? */
2478 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2479 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2480 priv->staging_rxon.flags |=
2481 RXON_FLG_SHORT_PREAMBLE_MSK;
2483 priv->staging_rxon.flags &=
2484 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2486 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2487 if (priv->assoc_capability &
2488 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2489 priv->staging_rxon.flags |=
2490 RXON_FLG_SHORT_SLOT_MSK;
2492 priv->staging_rxon.flags &=
2493 ~RXON_FLG_SHORT_SLOT_MSK;
2495 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2496 priv->staging_rxon.flags &=
2497 ~RXON_FLG_SHORT_SLOT_MSK;
2499 /* restore RXON assoc */
2500 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2501 iwlcore_commit_rxon(priv);
2502 spin_lock_irqsave(&priv->lock, flags);
2503 iwl_activate_qos(priv, 1);
2504 spin_unlock_irqrestore(&priv->lock, flags);
2505 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2507 iwl_send_beacon_cmd(priv);
2509 /* FIXME - we need to add code here to detect a totally new
2510 * configuration, reset the AP, unassoc, rxon timing, assoc,
2511 * clear sta table, add BCAST sta... */
2514 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2515 struct ieee80211_key_conf *keyconf, const u8 *addr,
2516 u32 iv32, u16 *phase1key)
2519 struct iwl_priv *priv = hw->priv;
2520 IWL_DEBUG_MAC80211(priv, "enter\n");
2522 iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2524 IWL_DEBUG_MAC80211(priv, "leave\n");
2527 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2528 struct ieee80211_vif *vif,
2529 struct ieee80211_sta *sta,
2530 struct ieee80211_key_conf *key)
2532 struct iwl_priv *priv = hw->priv;
2536 bool is_default_wep_key = false;
2538 IWL_DEBUG_MAC80211(priv, "enter\n");
2540 if (priv->cfg->mod_params->sw_crypto) {
2541 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2544 addr = sta ? sta->addr : iwl_bcast_addr;
2545 sta_id = iwl_find_station(priv, addr);
2546 if (sta_id == IWL_INVALID_STATION) {
2547 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2553 mutex_lock(&priv->mutex);
2554 iwl_scan_cancel_timeout(priv, 100);
2555 mutex_unlock(&priv->mutex);
2557 /* If we are getting WEP group key and we didn't receive any key mapping
2558 * so far, we are in legacy wep mode (group key only), otherwise we are
2560 * In legacy wep mode, we use another host command to the uCode */
2561 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2562 priv->iw_mode != NL80211_IFTYPE_AP) {
2564 is_default_wep_key = !priv->key_mapping_key;
2566 is_default_wep_key =
2567 (key->hw_key_idx == HW_KEY_DEFAULT);
2572 if (is_default_wep_key)
2573 ret = iwl_set_default_wep_key(priv, key);
2575 ret = iwl_set_dynamic_key(priv, key, sta_id);
2577 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2580 if (is_default_wep_key)
2581 ret = iwl_remove_default_wep_key(priv, key);
2583 ret = iwl_remove_dynamic_key(priv, key, sta_id);
2585 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2591 IWL_DEBUG_MAC80211(priv, "leave\n");
2596 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2597 enum ieee80211_ampdu_mlme_action action,
2598 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2600 struct iwl_priv *priv = hw->priv;
2603 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2606 if (!(priv->cfg->sku & IWL_SKU_N))
2610 case IEEE80211_AMPDU_RX_START:
2611 IWL_DEBUG_HT(priv, "start Rx\n");
2612 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2613 case IEEE80211_AMPDU_RX_STOP:
2614 IWL_DEBUG_HT(priv, "stop Rx\n");
2615 ret = iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2616 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2620 case IEEE80211_AMPDU_TX_START:
2621 IWL_DEBUG_HT(priv, "start Tx\n");
2622 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2623 case IEEE80211_AMPDU_TX_STOP:
2624 IWL_DEBUG_HT(priv, "stop Tx\n");
2625 ret = iwl_tx_agg_stop(priv, sta->addr, tid);
2626 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2631 IWL_DEBUG_HT(priv, "unknown\n");
2638 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2639 struct ieee80211_low_level_stats *stats)
2641 struct iwl_priv *priv = hw->priv;
2644 IWL_DEBUG_MAC80211(priv, "enter\n");
2645 IWL_DEBUG_MAC80211(priv, "leave\n");
2650 /*****************************************************************************
2654 *****************************************************************************/
2656 #ifdef CONFIG_IWLWIFI_DEBUG
2659 * The following adds a new attribute to the sysfs representation
2660 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
2661 * used for controlling the debug level.
2663 * See the level definitions in iwl for details.
2665 * The debug_level being managed using sysfs below is a per device debug
2666 * level that is used instead of the global debug level if it (the per
2667 * device debug level) is set.
2669 static ssize_t show_debug_level(struct device *d,
2670 struct device_attribute *attr, char *buf)
2672 struct iwl_priv *priv = dev_get_drvdata(d);
2673 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
2675 static ssize_t store_debug_level(struct device *d,
2676 struct device_attribute *attr,
2677 const char *buf, size_t count)
2679 struct iwl_priv *priv = dev_get_drvdata(d);
2683 ret = strict_strtoul(buf, 0, &val);
2685 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
2687 priv->debug_level = val;
2688 if (iwl_alloc_traffic_mem(priv))
2690 "Not enough memory to generate traffic log\n");
2692 return strnlen(buf, count);
2695 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
2696 show_debug_level, store_debug_level);
2699 #endif /* CONFIG_IWLWIFI_DEBUG */
2702 static ssize_t show_temperature(struct device *d,
2703 struct device_attribute *attr, char *buf)
2705 struct iwl_priv *priv = dev_get_drvdata(d);
2707 if (!iwl_is_alive(priv))
2710 return sprintf(buf, "%d\n", priv->temperature);
2713 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
2715 static ssize_t show_tx_power(struct device *d,
2716 struct device_attribute *attr, char *buf)
2718 struct iwl_priv *priv = dev_get_drvdata(d);
2720 if (!iwl_is_ready_rf(priv))
2721 return sprintf(buf, "off\n");
2723 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
2726 static ssize_t store_tx_power(struct device *d,
2727 struct device_attribute *attr,
2728 const char *buf, size_t count)
2730 struct iwl_priv *priv = dev_get_drvdata(d);
2734 ret = strict_strtoul(buf, 10, &val);
2736 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
2738 ret = iwl_set_tx_power(priv, val, false);
2740 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
2748 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
2750 static ssize_t show_flags(struct device *d,
2751 struct device_attribute *attr, char *buf)
2753 struct iwl_priv *priv = dev_get_drvdata(d);
2755 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
2758 static ssize_t store_flags(struct device *d,
2759 struct device_attribute *attr,
2760 const char *buf, size_t count)
2762 struct iwl_priv *priv = dev_get_drvdata(d);
2765 int ret = strict_strtoul(buf, 0, &val);
2770 mutex_lock(&priv->mutex);
2771 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
2772 /* Cancel any currently running scans... */
2773 if (iwl_scan_cancel_timeout(priv, 100))
2774 IWL_WARN(priv, "Could not cancel scan.\n");
2776 IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
2777 priv->staging_rxon.flags = cpu_to_le32(flags);
2778 iwlcore_commit_rxon(priv);
2781 mutex_unlock(&priv->mutex);
2786 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
2788 static ssize_t show_filter_flags(struct device *d,
2789 struct device_attribute *attr, char *buf)
2791 struct iwl_priv *priv = dev_get_drvdata(d);
2793 return sprintf(buf, "0x%04X\n",
2794 le32_to_cpu(priv->active_rxon.filter_flags));
2797 static ssize_t store_filter_flags(struct device *d,
2798 struct device_attribute *attr,
2799 const char *buf, size_t count)
2801 struct iwl_priv *priv = dev_get_drvdata(d);
2804 int ret = strict_strtoul(buf, 0, &val);
2807 filter_flags = (u32)val;
2809 mutex_lock(&priv->mutex);
2810 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
2811 /* Cancel any currently running scans... */
2812 if (iwl_scan_cancel_timeout(priv, 100))
2813 IWL_WARN(priv, "Could not cancel scan.\n");
2815 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
2816 "0x%04X\n", filter_flags);
2817 priv->staging_rxon.filter_flags =
2818 cpu_to_le32(filter_flags);
2819 iwlcore_commit_rxon(priv);
2822 mutex_unlock(&priv->mutex);
2827 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
2828 store_filter_flags);
2831 static ssize_t show_statistics(struct device *d,
2832 struct device_attribute *attr, char *buf)
2834 struct iwl_priv *priv = dev_get_drvdata(d);
2835 u32 size = sizeof(struct iwl_notif_statistics);
2836 u32 len = 0, ofs = 0;
2837 u8 *data = (u8 *)&priv->statistics;
2840 if (!iwl_is_alive(priv))
2843 mutex_lock(&priv->mutex);
2844 rc = iwl_send_statistics_request(priv, 0);
2845 mutex_unlock(&priv->mutex);
2849 "Error sending statistics request: 0x%08X\n", rc);
2853 while (size && (PAGE_SIZE - len)) {
2854 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
2855 PAGE_SIZE - len, 1);
2857 if (PAGE_SIZE - len)
2861 size -= min(size, 16U);
2867 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
2869 static ssize_t show_rts_ht_protection(struct device *d,
2870 struct device_attribute *attr, char *buf)
2872 struct iwl_priv *priv = dev_get_drvdata(d);
2874 return sprintf(buf, "%s\n",
2875 priv->cfg->use_rts_for_ht ? "RTS/CTS" : "CTS-to-self");
2878 static ssize_t store_rts_ht_protection(struct device *d,
2879 struct device_attribute *attr,
2880 const char *buf, size_t count)
2882 struct iwl_priv *priv = dev_get_drvdata(d);
2886 ret = strict_strtoul(buf, 10, &val);
2888 IWL_INFO(priv, "Input is not in decimal form.\n");
2890 if (!iwl_is_associated(priv))
2891 priv->cfg->use_rts_for_ht = val ? true : false;
2893 IWL_ERR(priv, "Sta associated with AP - "
2894 "Change protection mechanism is not allowed\n");
2900 static DEVICE_ATTR(rts_ht_protection, S_IWUSR | S_IRUGO,
2901 show_rts_ht_protection, store_rts_ht_protection);
2904 /*****************************************************************************
2906 * driver setup and teardown
2908 *****************************************************************************/
2910 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2912 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
2914 init_waitqueue_head(&priv->wait_command_queue);
2916 INIT_WORK(&priv->up, iwl_bg_up);
2917 INIT_WORK(&priv->restart, iwl_bg_restart);
2918 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
2919 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2920 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2921 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
2922 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
2924 iwl_setup_scan_deferred_work(priv);
2926 if (priv->cfg->ops->lib->setup_deferred_work)
2927 priv->cfg->ops->lib->setup_deferred_work(priv);
2929 init_timer(&priv->statistics_periodic);
2930 priv->statistics_periodic.data = (unsigned long)priv;
2931 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2933 if (!priv->cfg->use_isr_legacy)
2934 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
2935 iwl_irq_tasklet, (unsigned long)priv);
2937 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
2938 iwl_irq_tasklet_legacy, (unsigned long)priv);
2941 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2943 if (priv->cfg->ops->lib->cancel_deferred_work)
2944 priv->cfg->ops->lib->cancel_deferred_work(priv);
2946 cancel_delayed_work_sync(&priv->init_alive_start);
2947 cancel_delayed_work(&priv->scan_check);
2948 cancel_delayed_work(&priv->alive_start);
2949 cancel_work_sync(&priv->beacon_update);
2950 del_timer_sync(&priv->statistics_periodic);
2953 static struct attribute *iwl_sysfs_entries[] = {
2954 &dev_attr_flags.attr,
2955 &dev_attr_filter_flags.attr,
2956 &dev_attr_statistics.attr,
2957 &dev_attr_temperature.attr,
2958 &dev_attr_tx_power.attr,
2959 &dev_attr_rts_ht_protection.attr,
2960 #ifdef CONFIG_IWLWIFI_DEBUG
2961 &dev_attr_debug_level.attr,
2966 static struct attribute_group iwl_attribute_group = {
2967 .name = NULL, /* put in device directory */
2968 .attrs = iwl_sysfs_entries,
2971 static struct ieee80211_ops iwl_hw_ops = {
2973 .start = iwl_mac_start,
2974 .stop = iwl_mac_stop,
2975 .add_interface = iwl_mac_add_interface,
2976 .remove_interface = iwl_mac_remove_interface,
2977 .config = iwl_mac_config,
2978 .configure_filter = iwl_configure_filter,
2979 .set_key = iwl_mac_set_key,
2980 .update_tkip_key = iwl_mac_update_tkip_key,
2981 .get_stats = iwl_mac_get_stats,
2982 .get_tx_stats = iwl_mac_get_tx_stats,
2983 .conf_tx = iwl_mac_conf_tx,
2984 .reset_tsf = iwl_mac_reset_tsf,
2985 .bss_info_changed = iwl_bss_info_changed,
2986 .ampdu_action = iwl_mac_ampdu_action,
2987 .hw_scan = iwl_mac_hw_scan
2990 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
2993 struct iwl_priv *priv;
2994 struct ieee80211_hw *hw;
2995 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
2996 unsigned long flags;
2999 /************************
3000 * 1. Allocating HW data
3001 ************************/
3003 /* Disabling hardware scan means that mac80211 will perform scans
3004 * "the hard way", rather than using device's scan. */
3005 if (cfg->mod_params->disable_hw_scan) {
3006 if (iwl_debug_level & IWL_DL_INFO)
3007 dev_printk(KERN_DEBUG, &(pdev->dev),
3008 "Disabling hw_scan\n");
3009 iwl_hw_ops.hw_scan = NULL;
3012 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3018 /* At this point both hw and priv are allocated. */
3020 SET_IEEE80211_DEV(hw, &pdev->dev);
3022 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3024 priv->pci_dev = pdev;
3025 priv->inta_mask = CSR_INI_SET_MASK;
3027 #ifdef CONFIG_IWLWIFI_DEBUG
3028 atomic_set(&priv->restrict_refcnt, 0);
3030 if (iwl_alloc_traffic_mem(priv))
3031 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3033 /**************************
3034 * 2. Initializing PCI bus
3035 **************************/
3036 if (pci_enable_device(pdev)) {
3038 goto out_ieee80211_free_hw;
3041 pci_set_master(pdev);
3043 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3045 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3047 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3049 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3050 /* both attempts failed: */
3052 IWL_WARN(priv, "No suitable DMA available.\n");
3053 goto out_pci_disable_device;
3057 err = pci_request_regions(pdev, DRV_NAME);
3059 goto out_pci_disable_device;
3061 pci_set_drvdata(pdev, priv);
3064 /***********************
3065 * 3. Read REV register
3066 ***********************/
3067 priv->hw_base = pci_iomap(pdev, 0, 0);
3068 if (!priv->hw_base) {
3070 goto out_pci_release_regions;
3073 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3074 (unsigned long long) pci_resource_len(pdev, 0));
3075 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3077 /* this spin lock will be used in apm_ops.init and EEPROM access
3078 * we should init now
3080 spin_lock_init(&priv->reg_lock);
3081 iwl_hw_detect(priv);
3082 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3083 priv->cfg->name, priv->hw_rev);
3085 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3086 * PCI Tx retries from interfering with C3 CPU state */
3087 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3089 iwl_prepare_card_hw(priv);
3090 if (!priv->hw_ready) {
3091 IWL_WARN(priv, "Failed, HW not ready\n");
3096 err = priv->cfg->ops->lib->apm_ops.init(priv);
3098 IWL_ERR(priv, "Failed to init APMG\n");
3104 /* Read the EEPROM */
3105 err = iwl_eeprom_init(priv);
3107 IWL_ERR(priv, "Unable to init EEPROM\n");
3110 err = iwl_eeprom_check_version(priv);
3112 goto out_free_eeprom;
3114 /* extract MAC Address */
3115 iwl_eeprom_get_mac(priv, priv->mac_addr);
3116 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3117 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3119 /************************
3120 * 5. Setup HW constants
3121 ************************/
3122 if (iwl_set_hw_params(priv)) {
3123 IWL_ERR(priv, "failed to set hw parameters\n");
3124 goto out_free_eeprom;
3127 /*******************
3129 *******************/
3131 err = iwl_init_drv(priv);
3133 goto out_free_eeprom;
3134 /* At this point both hw and priv are initialized. */
3136 /********************
3138 ********************/
3139 spin_lock_irqsave(&priv->lock, flags);
3140 iwl_disable_interrupts(priv);
3141 spin_unlock_irqrestore(&priv->lock, flags);
3143 pci_enable_msi(priv->pci_dev);
3145 iwl_alloc_isr_ict(priv);
3146 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr,
3147 IRQF_SHARED, DRV_NAME, priv);
3149 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3150 goto out_disable_msi;
3152 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3154 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3158 iwl_setup_deferred_work(priv);
3159 iwl_setup_rx_handlers(priv);
3161 /**********************************
3162 * 8. Setup and register mac80211
3163 **********************************/
3165 /* enable interrupts if needed: hw bug w/a */
3166 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3167 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3168 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3169 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3172 iwl_enable_interrupts(priv);
3174 err = iwl_setup_mac(priv);
3176 goto out_remove_sysfs;
3178 err = iwl_dbgfs_register(priv, DRV_NAME);
3180 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
3182 /* If platform's RF_KILL switch is NOT set to KILL */
3183 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3184 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3186 set_bit(STATUS_RF_KILL_HW, &priv->status);
3188 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3189 test_bit(STATUS_RF_KILL_HW, &priv->status));
3191 iwl_power_initialize(priv);
3192 iwl_tt_initialize(priv);
3196 destroy_workqueue(priv->workqueue);
3197 priv->workqueue = NULL;
3198 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3200 free_irq(priv->pci_dev->irq, priv);
3201 iwl_free_isr_ict(priv);
3203 pci_disable_msi(priv->pci_dev);
3204 iwl_uninit_drv(priv);
3206 iwl_eeprom_free(priv);
3208 pci_iounmap(pdev, priv->hw_base);
3209 out_pci_release_regions:
3210 pci_set_drvdata(pdev, NULL);
3211 pci_release_regions(pdev);
3212 out_pci_disable_device:
3213 pci_disable_device(pdev);
3214 out_ieee80211_free_hw:
3215 iwl_free_traffic_mem(priv);
3216 ieee80211_free_hw(priv->hw);
3221 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3223 struct iwl_priv *priv = pci_get_drvdata(pdev);
3224 unsigned long flags;
3229 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3231 iwl_dbgfs_unregister(priv);
3232 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3234 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3235 * to be called and iwl_down since we are removing the device
3236 * we need to set STATUS_EXIT_PENDING bit.
3238 set_bit(STATUS_EXIT_PENDING, &priv->status);
3239 if (priv->mac80211_registered) {
3240 ieee80211_unregister_hw(priv->hw);
3241 priv->mac80211_registered = 0;
3248 /* make sure we flush any pending irq or
3249 * tasklet for the driver
3251 spin_lock_irqsave(&priv->lock, flags);
3252 iwl_disable_interrupts(priv);
3253 spin_unlock_irqrestore(&priv->lock, flags);
3255 iwl_synchronize_irq(priv);
3257 iwl_dealloc_ucode_pci(priv);
3260 iwl_rx_queue_free(priv, &priv->rxq);
3261 iwl_hw_txq_ctx_free(priv);
3263 iwl_clear_stations_table(priv);
3264 iwl_eeprom_free(priv);
3267 /*netif_stop_queue(dev); */
3268 flush_workqueue(priv->workqueue);
3270 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3271 * priv->workqueue... so we can't take down the workqueue
3273 destroy_workqueue(priv->workqueue);
3274 priv->workqueue = NULL;
3275 iwl_free_traffic_mem(priv);
3277 free_irq(priv->pci_dev->irq, priv);
3278 pci_disable_msi(priv->pci_dev);
3279 pci_iounmap(pdev, priv->hw_base);
3280 pci_release_regions(pdev);
3281 pci_disable_device(pdev);
3282 pci_set_drvdata(pdev, NULL);
3284 iwl_uninit_drv(priv);
3286 iwl_free_isr_ict(priv);
3288 if (priv->ibss_beacon)
3289 dev_kfree_skb(priv->ibss_beacon);
3291 ieee80211_free_hw(priv->hw);
3295 /*****************************************************************************
3297 * driver and module entry point
3299 *****************************************************************************/
3301 /* Hardware specific file defines the PCI IDs table for that hardware module */
3302 static struct pci_device_id iwl_hw_card_ids[] = {
3303 #ifdef CONFIG_IWL4965
3304 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3305 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3306 #endif /* CONFIG_IWL4965 */
3307 #ifdef CONFIG_IWL5000
3308 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
3309 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
3310 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
3311 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
3312 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
3313 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
3314 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
3315 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
3316 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
3317 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
3318 /* 5350 WiFi/WiMax */
3319 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
3320 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
3321 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
3322 /* 5150 Wifi/WiMax */
3323 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
3324 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
3327 {IWL_PCI_DEVICE(0x008D, 0x1301, iwl6000h_2agn_cfg)},
3328 {IWL_PCI_DEVICE(0x008D, 0x1321, iwl6000h_2agn_cfg)},
3329 {IWL_PCI_DEVICE(0x008D, 0x1326, iwl6000h_2abg_cfg)},
3330 {IWL_PCI_DEVICE(0x008D, 0x1306, iwl6000h_2abg_cfg)},
3331 {IWL_PCI_DEVICE(0x008D, 0x1307, iwl6000h_2bg_cfg)},
3332 {IWL_PCI_DEVICE(0x008E, 0x1311, iwl6000h_2agn_cfg)},
3333 {IWL_PCI_DEVICE(0x008E, 0x1316, iwl6000h_2abg_cfg)},
3335 {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
3336 {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
3337 {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
3338 {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
3339 {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
3340 {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
3341 {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
3342 {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
3343 {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
3344 {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
3346 /* 6x50 WiFi/WiMax Series */
3347 {IWL_PCI_DEVICE(0x0086, 0x1101, iwl6050_3agn_cfg)},
3348 {IWL_PCI_DEVICE(0x0086, 0x1121, iwl6050_3agn_cfg)},
3349 {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
3350 {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
3351 {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
3352 {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
3353 {IWL_PCI_DEVICE(0x0088, 0x1111, iwl6050_3agn_cfg)},
3354 {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
3355 {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
3357 /* 1000 Series WiFi */
3358 {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
3359 {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
3360 {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
3361 {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
3362 {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
3363 {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
3364 {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
3365 {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
3366 {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
3367 {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
3368 {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
3369 {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
3370 #endif /* CONFIG_IWL5000 */
3374 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3376 static struct pci_driver iwl_driver = {
3378 .id_table = iwl_hw_card_ids,
3379 .probe = iwl_pci_probe,
3380 .remove = __devexit_p(iwl_pci_remove),
3382 .suspend = iwl_pci_suspend,
3383 .resume = iwl_pci_resume,
3387 static int __init iwl_init(void)
3391 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3392 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3394 ret = iwlagn_rate_control_register();
3396 printk(KERN_ERR DRV_NAME
3397 "Unable to register rate control algorithm: %d\n", ret);
3401 ret = pci_register_driver(&iwl_driver);
3403 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3404 goto error_register;
3410 iwlagn_rate_control_unregister();
3414 static void __exit iwl_exit(void)
3416 pci_unregister_driver(&iwl_driver);
3417 iwlagn_rate_control_unregister();
3420 module_exit(iwl_exit);
3421 module_init(iwl_init);
3423 #ifdef CONFIG_IWLWIFI_DEBUG
3424 module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
3425 MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
3426 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3427 MODULE_PARM_DESC(debug, "debug output mask");