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 static 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;
118 /* allow CTS-to-self if possible. this is relevant only for
119 * 5000, but will not damage 4965 */
120 priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
122 ret = iwl_check_rxon_cmd(priv);
124 IWL_ERR(priv, "Invalid RXON configuration. Not committing.\n");
128 /* If we don't need to send a full RXON, we can use
129 * iwl_rxon_assoc_cmd which is used to reconfigure filter
130 * and other flags for the current radio configuration. */
131 if (!iwl_full_rxon_required(priv)) {
132 ret = iwl_send_rxon_assoc(priv);
134 IWL_ERR(priv, "Error setting RXON_ASSOC (%d)\n", ret);
138 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
142 /* station table will be cleared */
143 priv->assoc_station_added = 0;
145 /* If we are currently associated and the new config requires
146 * an RXON_ASSOC and the new config wants the associated mask enabled,
147 * we must clear the associated from the active configuration
148 * before we apply the new config */
149 if (iwl_is_associated(priv) && new_assoc) {
150 IWL_DEBUG_INFO(priv, "Toggling associated bit on current RXON\n");
151 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
153 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
154 sizeof(struct iwl_rxon_cmd),
157 /* If the mask clearing failed then we set
158 * active_rxon back to what it was previously */
160 active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
161 IWL_ERR(priv, "Error clearing ASSOC_MSK (%d)\n", ret);
166 IWL_DEBUG_INFO(priv, "Sending RXON\n"
167 "* with%s RXON_FILTER_ASSOC_MSK\n"
170 (new_assoc ? "" : "out"),
171 le16_to_cpu(priv->staging_rxon.channel),
172 priv->staging_rxon.bssid_addr);
174 iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
176 /* Apply the new configuration
177 * RXON unassoc clears the station table in uCode, send it before
178 * we add the bcast station. If assoc bit is set, we will send RXON
179 * after having added the bcast and bssid station.
182 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
183 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
185 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
188 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
191 iwl_clear_stations_table(priv);
193 if (!priv->error_recovering)
194 priv->start_calib = 0;
196 /* Add the broadcast address so we can send broadcast frames */
197 if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
198 IWL_INVALID_STATION) {
199 IWL_ERR(priv, "Error adding BROADCAST address for transmit.\n");
203 /* If we have set the ASSOC_MSK and we are in BSS mode then
204 * add the IWL_AP_ID to the station rate table */
206 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
207 ret = iwl_rxon_add_station(priv,
208 priv->active_rxon.bssid_addr, 1);
209 if (ret == IWL_INVALID_STATION) {
211 "Error adding AP address for TX.\n");
214 priv->assoc_station_added = 1;
215 if (priv->default_wep_key &&
216 iwl_send_static_wepkey_cmd(priv, 0))
218 "Could not send WEP static key.\n");
221 /* Apply the new configuration
222 * RXON assoc doesn't clear the station table in uCode,
224 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
225 sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
227 IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
230 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
233 iwl_init_sensitivity(priv);
235 /* If we issue a new RXON command which required a tune then we must
236 * send a new TXPOWER command or we won't be able to Tx any frames */
237 ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
239 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
246 void iwl_update_chain_flags(struct iwl_priv *priv)
249 iwl_set_rxon_chain(priv);
250 iwl_commit_rxon(priv);
253 static void iwl_clear_free_frames(struct iwl_priv *priv)
255 struct list_head *element;
257 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
260 while (!list_empty(&priv->free_frames)) {
261 element = priv->free_frames.next;
263 kfree(list_entry(element, struct iwl_frame, list));
264 priv->frames_count--;
267 if (priv->frames_count) {
268 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
270 priv->frames_count = 0;
274 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
276 struct iwl_frame *frame;
277 struct list_head *element;
278 if (list_empty(&priv->free_frames)) {
279 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
281 IWL_ERR(priv, "Could not allocate frame!\n");
285 priv->frames_count++;
289 element = priv->free_frames.next;
291 return list_entry(element, struct iwl_frame, list);
294 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
296 memset(frame, 0, sizeof(*frame));
297 list_add(&frame->list, &priv->free_frames);
300 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
301 struct ieee80211_hdr *hdr,
304 if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
305 ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
306 (priv->iw_mode != NL80211_IFTYPE_AP)))
309 if (priv->ibss_beacon->len > left)
312 memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
314 return priv->ibss_beacon->len;
317 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
318 struct iwl_frame *frame, u8 rate)
320 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
321 unsigned int frame_size;
323 tx_beacon_cmd = &frame->u.beacon;
324 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
326 tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
327 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
329 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
330 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
332 BUG_ON(frame_size > MAX_MPDU_SIZE);
333 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
335 if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
336 tx_beacon_cmd->tx.rate_n_flags =
337 iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
339 tx_beacon_cmd->tx.rate_n_flags =
340 iwl_hw_set_rate_n_flags(rate, 0);
342 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
344 TX_CMD_FLG_STA_RATE_MSK;
346 return sizeof(*tx_beacon_cmd) + frame_size;
348 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
350 struct iwl_frame *frame;
351 unsigned int frame_size;
355 frame = iwl_get_free_frame(priv);
358 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
363 rate = iwl_rate_get_lowest_plcp(priv);
365 frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
367 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
370 iwl_free_frame(priv, frame);
375 static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
377 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
379 dma_addr_t addr = get_unaligned_le32(&tb->lo);
380 if (sizeof(dma_addr_t) > sizeof(u32))
382 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
387 static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
389 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
391 return le16_to_cpu(tb->hi_n_len) >> 4;
394 static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
395 dma_addr_t addr, u16 len)
397 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
398 u16 hi_n_len = len << 4;
400 put_unaligned_le32(addr, &tb->lo);
401 if (sizeof(dma_addr_t) > sizeof(u32))
402 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
404 tb->hi_n_len = cpu_to_le16(hi_n_len);
406 tfd->num_tbs = idx + 1;
409 static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
411 return tfd->num_tbs & 0x1f;
415 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
416 * @priv - driver private data
419 * Does NOT advance any TFD circular buffer read/write indexes
420 * Does NOT free the TFD itself (which is within circular buffer)
422 void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
424 struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
426 struct pci_dev *dev = priv->pci_dev;
427 int index = txq->q.read_ptr;
431 tfd = &tfd_tmp[index];
433 /* Sanity check on number of chunks */
434 num_tbs = iwl_tfd_get_num_tbs(tfd);
436 if (num_tbs >= IWL_NUM_OF_TBS) {
437 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
438 /* @todo issue fatal error, it is quite serious situation */
444 pci_unmap_single(dev,
445 pci_unmap_addr(&txq->cmd[index]->meta, mapping),
446 pci_unmap_len(&txq->cmd[index]->meta, len),
449 /* Unmap chunks, if any. */
450 for (i = 1; i < num_tbs; i++) {
451 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
452 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
455 dev_kfree_skb(txq->txb[txq->q.read_ptr].skb[i - 1]);
456 txq->txb[txq->q.read_ptr].skb[i - 1] = NULL;
461 int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
462 struct iwl_tx_queue *txq,
463 dma_addr_t addr, u16 len,
467 struct iwl_tfd *tfd, *tfd_tmp;
471 tfd_tmp = (struct iwl_tfd *)txq->tfds;
472 tfd = &tfd_tmp[q->write_ptr];
475 memset(tfd, 0, sizeof(*tfd));
477 num_tbs = iwl_tfd_get_num_tbs(tfd);
479 /* Each TFD can point to a maximum 20 Tx buffers */
480 if (num_tbs >= IWL_NUM_OF_TBS) {
481 IWL_ERR(priv, "Error can not send more than %d chunks\n",
486 BUG_ON(addr & ~DMA_BIT_MASK(36));
487 if (unlikely(addr & ~IWL_TX_DMA_MASK))
488 IWL_ERR(priv, "Unaligned address = %llx\n",
489 (unsigned long long)addr);
491 iwl_tfd_set_tb(tfd, num_tbs, addr, len);
497 * Tell nic where to find circular buffer of Tx Frame Descriptors for
498 * given Tx queue, and enable the DMA channel used for that queue.
500 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
501 * channels supported in hardware.
503 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
504 struct iwl_tx_queue *txq)
508 int txq_id = txq->q.id;
510 spin_lock_irqsave(&priv->lock, flags);
511 ret = iwl_grab_nic_access(priv);
513 spin_unlock_irqrestore(&priv->lock, flags);
517 /* Circular buffer (TFD queue in DRAM) physical base address */
518 iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
519 txq->q.dma_addr >> 8);
521 iwl_release_nic_access(priv);
522 spin_unlock_irqrestore(&priv->lock, flags);
528 /******************************************************************************
530 * Misc. internal state and helper functions
532 ******************************************************************************/
534 static void iwl_ht_conf(struct iwl_priv *priv,
535 struct ieee80211_bss_conf *bss_conf)
537 struct ieee80211_sta_ht_cap *ht_conf;
538 struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
539 struct ieee80211_sta *sta;
541 IWL_DEBUG_MAC80211(priv, "enter: \n");
543 if (!iwl_conf->is_ht)
548 * It is totally wrong to base global information on something
549 * that is valid only when associated, alas, this driver works
550 * that way and I don't know how to fix it.
554 sta = ieee80211_find_sta(priv->hw, priv->bssid);
559 ht_conf = &sta->ht_cap;
561 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
562 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
563 if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
564 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
566 iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
567 iwl_conf->max_amsdu_size =
568 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
570 iwl_conf->supported_chan_width =
571 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
574 * XXX: The HT configuration needs to be moved into iwl_mac_config()
575 * to be done there correctly.
578 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
579 if (conf_is_ht40_minus(&priv->hw->conf))
580 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
581 else if (conf_is_ht40_plus(&priv->hw->conf))
582 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
584 /* If no above or below channel supplied disable FAT channel */
585 if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
586 iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
587 iwl_conf->supported_chan_width = 0;
589 iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
591 memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
593 iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
594 iwl_conf->ht_protection =
595 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
596 iwl_conf->non_GF_STA_present =
597 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
601 IWL_DEBUG_MAC80211(priv, "leave\n");
607 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
609 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
612 priv->qos_data.def_qos_parm.qos_flags = 0;
614 if (priv->qos_data.qos_cap.q_AP.queue_request &&
615 !priv->qos_data.qos_cap.q_AP.txop_request)
616 priv->qos_data.def_qos_parm.qos_flags |=
617 QOS_PARAM_FLG_TXOP_TYPE_MSK;
618 if (priv->qos_data.qos_active)
619 priv->qos_data.def_qos_parm.qos_flags |=
620 QOS_PARAM_FLG_UPDATE_EDCA_MSK;
622 if (priv->current_ht_config.is_ht)
623 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
625 if (force || iwl_is_associated(priv)) {
626 IWL_DEBUG_QOS(priv, "send QoS cmd with Qos active=%d FLAGS=0x%X\n",
627 priv->qos_data.qos_active,
628 priv->qos_data.def_qos_parm.qos_flags);
630 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
631 sizeof(struct iwl_qosparam_cmd),
632 &priv->qos_data.def_qos_parm, NULL);
636 #define MAX_UCODE_BEACON_INTERVAL 4096
638 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
641 u16 beacon_factor = 0;
643 beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
644 / MAX_UCODE_BEACON_INTERVAL;
645 new_val = beacon_val / beacon_factor;
648 new_val = MAX_UCODE_BEACON_INTERVAL;
653 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
656 s32 interval_tm, rem;
658 struct ieee80211_conf *conf = NULL;
661 conf = ieee80211_get_hw_conf(priv->hw);
663 spin_lock_irqsave(&priv->lock, flags);
664 priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
665 priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
667 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
668 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
669 priv->rxon_timing.atim_window = 0;
671 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
673 /* TODO: we need to get atim_window from upper stack
674 * for now we set to 0 */
675 priv->rxon_timing.atim_window = 0;
678 priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
680 tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
681 interval_tm = beacon_int * 1024;
682 rem = do_div(tsf, interval_tm);
683 priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
685 spin_unlock_irqrestore(&priv->lock, flags);
686 IWL_DEBUG_ASSOC(priv, "beacon interval %d beacon timer %d beacon tim %d\n",
687 le16_to_cpu(priv->rxon_timing.beacon_interval),
688 le32_to_cpu(priv->rxon_timing.beacon_init_val),
689 le16_to_cpu(priv->rxon_timing.atim_window));
692 static int iwl_set_mode(struct iwl_priv *priv, int mode)
694 iwl_connection_init_rx_config(priv, mode);
695 iwl_set_rxon_chain(priv);
696 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
698 iwl_clear_stations_table(priv);
700 /* dont commit rxon if rf-kill is on*/
701 if (!iwl_is_ready_rf(priv))
704 cancel_delayed_work(&priv->scan_check);
705 if (iwl_scan_cancel_timeout(priv, 100)) {
706 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
707 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
711 iwl_commit_rxon(priv);
716 /******************************************************************************
718 * Generic RX handler implementations
720 ******************************************************************************/
721 static void iwl_rx_reply_alive(struct iwl_priv *priv,
722 struct iwl_rx_mem_buffer *rxb)
724 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
725 struct iwl_alive_resp *palive;
726 struct delayed_work *pwork;
728 palive = &pkt->u.alive_frame;
730 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
732 palive->is_valid, palive->ver_type,
733 palive->ver_subtype);
735 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
736 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
737 memcpy(&priv->card_alive_init,
739 sizeof(struct iwl_init_alive_resp));
740 pwork = &priv->init_alive_start;
742 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
743 memcpy(&priv->card_alive, &pkt->u.alive_frame,
744 sizeof(struct iwl_alive_resp));
745 pwork = &priv->alive_start;
748 /* We delay the ALIVE response by 5ms to
749 * give the HW RF Kill time to activate... */
750 if (palive->is_valid == UCODE_VALID_OK)
751 queue_delayed_work(priv->workqueue, pwork,
752 msecs_to_jiffies(5));
754 IWL_WARN(priv, "uCode did not respond OK.\n");
757 static void iwl_rx_reply_error(struct iwl_priv *priv,
758 struct iwl_rx_mem_buffer *rxb)
760 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
762 IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
763 "seq 0x%04X ser 0x%08X\n",
764 le32_to_cpu(pkt->u.err_resp.error_type),
765 get_cmd_string(pkt->u.err_resp.cmd_id),
766 pkt->u.err_resp.cmd_id,
767 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
768 le32_to_cpu(pkt->u.err_resp.error_info));
771 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
772 struct iwl_rx_mem_buffer *rxb)
774 #ifdef CONFIG_IWLWIFI_DEBUG
775 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
776 struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
777 IWL_DEBUG_RX(priv, "sleep mode: %d, src: %d\n",
778 sleep->pm_sleep_mode, sleep->pm_wakeup_src);
782 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
783 struct iwl_rx_mem_buffer *rxb)
785 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
786 IWL_DEBUG_RADIO(priv, "Dumping %d bytes of unhandled "
787 "notification for %s:\n",
788 le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
789 iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
792 static void iwl_bg_beacon_update(struct work_struct *work)
794 struct iwl_priv *priv =
795 container_of(work, struct iwl_priv, beacon_update);
796 struct sk_buff *beacon;
798 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
799 beacon = ieee80211_beacon_get(priv->hw, priv->vif);
802 IWL_ERR(priv, "update beacon failed\n");
806 mutex_lock(&priv->mutex);
807 /* new beacon skb is allocated every time; dispose previous.*/
808 if (priv->ibss_beacon)
809 dev_kfree_skb(priv->ibss_beacon);
811 priv->ibss_beacon = beacon;
812 mutex_unlock(&priv->mutex);
814 iwl_send_beacon_cmd(priv);
818 * iwl_bg_statistics_periodic - Timer callback to queue statistics
820 * This callback is provided in order to send a statistics request.
822 * This timer function is continually reset to execute within
823 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
824 * was received. We need to ensure we receive the statistics in order
825 * to update the temperature used for calibrating the TXPOWER.
827 static void iwl_bg_statistics_periodic(unsigned long data)
829 struct iwl_priv *priv = (struct iwl_priv *)data;
831 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
834 /* dont send host command if rf-kill is on */
835 if (!iwl_is_ready_rf(priv))
838 iwl_send_statistics_request(priv, CMD_ASYNC);
841 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
842 struct iwl_rx_mem_buffer *rxb)
844 #ifdef CONFIG_IWLWIFI_DEBUG
845 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
846 struct iwl4965_beacon_notif *beacon =
847 (struct iwl4965_beacon_notif *)pkt->u.raw;
848 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
850 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
851 "tsf %d %d rate %d\n",
852 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
853 beacon->beacon_notify_hdr.failure_frame,
854 le32_to_cpu(beacon->ibss_mgr_status),
855 le32_to_cpu(beacon->high_tsf),
856 le32_to_cpu(beacon->low_tsf), rate);
859 if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
860 (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
861 queue_work(priv->workqueue, &priv->beacon_update);
864 /* Handle notification from uCode that card's power state is changing
865 * due to software, hardware, or critical temperature RFKILL */
866 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
867 struct iwl_rx_mem_buffer *rxb)
869 struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
870 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
871 unsigned long status = priv->status;
873 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s\n",
874 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
875 (flags & SW_CARD_DISABLED) ? "Kill" : "On");
877 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
880 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
881 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
883 if (!iwl_grab_nic_access(priv)) {
885 priv, HBUS_TARG_MBX_C,
886 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
888 iwl_release_nic_access(priv);
891 if (!(flags & RXON_CARD_DISABLED)) {
892 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
893 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
894 if (!iwl_grab_nic_access(priv)) {
896 priv, HBUS_TARG_MBX_C,
897 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
899 iwl_release_nic_access(priv);
903 if (flags & RF_CARD_DISABLED) {
904 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
905 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
906 iwl_read32(priv, CSR_UCODE_DRV_GP1);
907 if (!iwl_grab_nic_access(priv))
908 iwl_release_nic_access(priv);
912 if (flags & HW_CARD_DISABLED)
913 set_bit(STATUS_RF_KILL_HW, &priv->status);
915 clear_bit(STATUS_RF_KILL_HW, &priv->status);
918 if (flags & SW_CARD_DISABLED)
919 set_bit(STATUS_RF_KILL_SW, &priv->status);
921 clear_bit(STATUS_RF_KILL_SW, &priv->status);
923 if (!(flags & RXON_CARD_DISABLED))
924 iwl_scan_cancel(priv);
926 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
927 test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
928 (test_bit(STATUS_RF_KILL_SW, &status) !=
929 test_bit(STATUS_RF_KILL_SW, &priv->status)))
930 queue_work(priv->workqueue, &priv->rf_kill);
932 wake_up_interruptible(&priv->wait_command_queue);
935 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
940 spin_lock_irqsave(&priv->lock, flags);
941 ret = iwl_grab_nic_access(priv);
945 if (src == IWL_PWR_SRC_VAUX) {
946 if (pci_pme_capable(priv->pci_dev, PCI_D3cold))
947 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
948 APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
949 ~APMG_PS_CTRL_MSK_PWR_SRC);
951 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
952 APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
953 ~APMG_PS_CTRL_MSK_PWR_SRC);
956 iwl_release_nic_access(priv);
958 spin_unlock_irqrestore(&priv->lock, flags);
963 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
965 * Setup the RX handlers for each of the reply types sent from the uCode
968 * This function chains into the hardware specific files for them to setup
969 * any hardware specific handlers as well.
971 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
973 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
974 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
975 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
976 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
977 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
978 iwl_rx_pm_debug_statistics_notif;
979 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
982 * The same handler is used for both the REPLY to a discrete
983 * statistics request from the host as well as for the periodic
984 * statistics notifications (after received beacons) from the uCode.
986 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
987 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
989 iwl_setup_spectrum_handlers(priv);
990 iwl_setup_rx_scan_handlers(priv);
992 /* status change handler */
993 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
995 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
996 iwl_rx_missed_beacon_notif;
998 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
999 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1001 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1002 /* Set up hardware specific Rx handlers */
1003 priv->cfg->ops->lib->rx_handler_setup(priv);
1007 * iwl_rx_handle - Main entry function for receiving responses from uCode
1009 * Uses the priv->rx_handlers callback function array to invoke
1010 * the appropriate handlers, including command responses,
1011 * frame-received notifications, and other notifications.
1013 void iwl_rx_handle(struct iwl_priv *priv)
1015 struct iwl_rx_mem_buffer *rxb;
1016 struct iwl_rx_packet *pkt;
1017 struct iwl_rx_queue *rxq = &priv->rxq;
1020 unsigned long flags;
1024 /* uCode's read index (stored in shared DRAM) indicates the last Rx
1025 * buffer that the driver may process (last buffer filled by ucode). */
1026 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
1029 /* Rx interrupt, but nothing sent from uCode */
1031 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
1033 if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1037 rxb = rxq->queue[i];
1039 /* If an RXB doesn't have a Rx queue slot associated with it,
1040 * then a bug has been introduced in the queue refilling
1041 * routines -- catch it here */
1042 BUG_ON(rxb == NULL);
1044 rxq->queue[i] = NULL;
1046 dma_sync_single_range_for_cpu(
1047 &priv->pci_dev->dev, rxb->real_dma_addr,
1048 rxb->aligned_dma_addr - rxb->real_dma_addr,
1049 priv->hw_params.rx_buf_size,
1050 PCI_DMA_FROMDEVICE);
1051 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1053 /* Reclaim a command buffer only if this packet is a response
1054 * to a (driver-originated) command.
1055 * If the packet (e.g. Rx frame) originated from uCode,
1056 * there is no command buffer to reclaim.
1057 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1058 * but apparently a few don't get set; catch them here. */
1059 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1060 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1061 (pkt->hdr.cmd != REPLY_RX) &&
1062 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1063 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1064 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1065 (pkt->hdr.cmd != REPLY_TX);
1067 /* Based on type of command response or notification,
1068 * handle those that need handling via function in
1069 * rx_handlers table. See iwl_setup_rx_handlers() */
1070 if (priv->rx_handlers[pkt->hdr.cmd]) {
1071 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
1072 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1073 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1075 /* No handling needed */
1077 "r %d i %d No handler needed for %s, 0x%02x\n",
1078 r, i, get_cmd_string(pkt->hdr.cmd),
1083 /* Invoke any callbacks, transfer the skb to caller, and
1084 * fire off the (possibly) blocking iwl_send_cmd()
1085 * as we reclaim the driver command queue */
1086 if (rxb && rxb->skb)
1087 iwl_tx_cmd_complete(priv, rxb);
1089 IWL_WARN(priv, "Claim null rxb?\n");
1092 /* For now we just don't re-use anything. We can tweak this
1093 * later to try and re-use notification packets and SKBs that
1094 * fail to Rx correctly */
1095 if (rxb->skb != NULL) {
1096 priv->alloc_rxb_skb--;
1097 dev_kfree_skb_any(rxb->skb);
1101 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1102 priv->hw_params.rx_buf_size + 256,
1103 PCI_DMA_FROMDEVICE);
1104 spin_lock_irqsave(&rxq->lock, flags);
1105 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1106 spin_unlock_irqrestore(&rxq->lock, flags);
1107 i = (i + 1) & RX_QUEUE_MASK;
1108 /* If there are a lot of unused frames,
1109 * restock the Rx queue so ucode wont assert. */
1114 iwl_rx_queue_restock(priv);
1120 /* Backtrack one entry */
1122 iwl_rx_queue_restock(priv);
1125 /* call this function to flush any scheduled tasklet */
1126 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1128 /* wait to make sure we flush pending tasklet*/
1129 synchronize_irq(priv->pci_dev->irq);
1130 tasklet_kill(&priv->irq_tasklet);
1133 static void iwl_error_recovery(struct iwl_priv *priv)
1135 unsigned long flags;
1137 memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1138 sizeof(priv->staging_rxon));
1139 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1140 iwl_commit_rxon(priv);
1142 iwl_rxon_add_station(priv, priv->bssid, 1);
1144 spin_lock_irqsave(&priv->lock, flags);
1145 priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1146 priv->error_recovering = 0;
1147 spin_unlock_irqrestore(&priv->lock, flags);
1150 static void iwl_irq_tasklet(struct iwl_priv *priv)
1152 u32 inta, handled = 0;
1154 unsigned long flags;
1155 #ifdef CONFIG_IWLWIFI_DEBUG
1159 spin_lock_irqsave(&priv->lock, flags);
1161 /* Ack/clear/reset pending uCode interrupts.
1162 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1163 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
1164 inta = iwl_read32(priv, CSR_INT);
1165 iwl_write32(priv, CSR_INT, inta);
1167 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1168 * Any new interrupts that happen after this, either while we're
1169 * in this tasklet, or later, will show up in next ISR/tasklet. */
1170 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1171 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1173 #ifdef CONFIG_IWLWIFI_DEBUG
1174 if (priv->debug_level & IWL_DL_ISR) {
1175 /* just for debug */
1176 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1177 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1178 inta, inta_mask, inta_fh);
1182 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1183 * atomic, make sure that inta covers all the interrupts that
1184 * we've discovered, even if FH interrupt came in just after
1185 * reading CSR_INT. */
1186 if (inta_fh & CSR49_FH_INT_RX_MASK)
1187 inta |= CSR_INT_BIT_FH_RX;
1188 if (inta_fh & CSR49_FH_INT_TX_MASK)
1189 inta |= CSR_INT_BIT_FH_TX;
1191 /* Now service all interrupt bits discovered above. */
1192 if (inta & CSR_INT_BIT_HW_ERR) {
1193 IWL_ERR(priv, "Microcode HW error detected. Restarting.\n");
1195 /* Tell the device to stop sending interrupts */
1196 iwl_disable_interrupts(priv);
1198 iwl_irq_handle_error(priv);
1200 handled |= CSR_INT_BIT_HW_ERR;
1202 spin_unlock_irqrestore(&priv->lock, flags);
1207 #ifdef CONFIG_IWLWIFI_DEBUG
1208 if (priv->debug_level & (IWL_DL_ISR)) {
1209 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1210 if (inta & CSR_INT_BIT_SCD)
1211 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1212 "the frame/frames.\n");
1214 /* Alive notification via Rx interrupt will do the real work */
1215 if (inta & CSR_INT_BIT_ALIVE)
1216 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1219 /* Safely ignore these bits for debug checks below */
1220 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1222 /* HW RF KILL switch toggled */
1223 if (inta & CSR_INT_BIT_RF_KILL) {
1225 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1226 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1229 IWL_DEBUG_RF_KILL(priv, "RF_KILL bit toggled to %s.\n",
1230 hw_rf_kill ? "disable radio" : "enable radio");
1232 /* driver only loads ucode once setting the interface up.
1233 * the driver allows loading the ucode even if the radio
1234 * is killed. Hence update the killswitch state here. The
1235 * rfkill handler will care about restarting if needed.
1237 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1239 set_bit(STATUS_RF_KILL_HW, &priv->status);
1241 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1242 queue_work(priv->workqueue, &priv->rf_kill);
1245 handled |= CSR_INT_BIT_RF_KILL;
1248 /* Chip got too hot and stopped itself */
1249 if (inta & CSR_INT_BIT_CT_KILL) {
1250 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1251 handled |= CSR_INT_BIT_CT_KILL;
1254 /* Error detected by uCode */
1255 if (inta & CSR_INT_BIT_SW_ERR) {
1256 IWL_ERR(priv, "Microcode SW error detected. "
1257 " Restarting 0x%X.\n", inta);
1258 iwl_irq_handle_error(priv);
1259 handled |= CSR_INT_BIT_SW_ERR;
1262 /* uCode wakes up after power-down sleep */
1263 if (inta & CSR_INT_BIT_WAKEUP) {
1264 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1265 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1266 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1267 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1268 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1269 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1270 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1271 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1273 handled |= CSR_INT_BIT_WAKEUP;
1276 /* All uCode command responses, including Tx command responses,
1277 * Rx "responses" (frame-received notification), and other
1278 * notifications from uCode come through here*/
1279 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1280 iwl_rx_handle(priv);
1281 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1284 if (inta & CSR_INT_BIT_FH_TX) {
1285 IWL_DEBUG_ISR(priv, "Tx interrupt\n");
1286 handled |= CSR_INT_BIT_FH_TX;
1287 /* FH finished to write, send event */
1288 priv->ucode_write_complete = 1;
1289 wake_up_interruptible(&priv->wait_command_queue);
1292 if (inta & ~handled)
1293 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1295 if (inta & ~CSR_INI_SET_MASK) {
1296 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1297 inta & ~CSR_INI_SET_MASK);
1298 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
1301 /* Re-enable all interrupts */
1302 /* only Re-enable if diabled by irq */
1303 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1304 iwl_enable_interrupts(priv);
1306 #ifdef CONFIG_IWLWIFI_DEBUG
1307 if (priv->debug_level & (IWL_DL_ISR)) {
1308 inta = iwl_read32(priv, CSR_INT);
1309 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1310 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1311 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1312 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1315 spin_unlock_irqrestore(&priv->lock, flags);
1318 static irqreturn_t iwl_isr(int irq, void *data)
1320 struct iwl_priv *priv = data;
1321 u32 inta, inta_mask;
1326 spin_lock(&priv->lock);
1328 /* Disable (but don't clear!) interrupts here to avoid
1329 * back-to-back ISRs and sporadic interrupts from our NIC.
1330 * If we have something to service, the tasklet will re-enable ints.
1331 * If we *don't* have something, we'll re-enable before leaving here. */
1332 inta_mask = iwl_read32(priv, CSR_INT_MASK); /* just for debug */
1333 iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1335 /* Discover which interrupts are active/pending */
1336 inta = iwl_read32(priv, CSR_INT);
1337 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1339 /* Ignore interrupt if there's nothing in NIC to service.
1340 * This may be due to IRQ shared with another device,
1341 * or due to sporadic interrupts thrown from our NIC. */
1342 if (!inta && !inta_fh) {
1343 IWL_DEBUG_ISR(priv, "Ignore interrupt, inta == 0, inta_fh == 0\n");
1347 if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1348 /* Hardware disappeared. It might have already raised
1350 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1354 IWL_DEBUG_ISR(priv, "ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1355 inta, inta_mask, inta_fh);
1357 inta &= ~CSR_INT_BIT_SCD;
1359 /* iwl_irq_tasklet() will service interrupts and re-enable them */
1360 if (likely(inta || inta_fh))
1361 tasklet_schedule(&priv->irq_tasklet);
1364 spin_unlock(&priv->lock);
1368 /* re-enable interrupts here since we don't have anything to service. */
1369 /* only Re-enable if diabled by irq */
1370 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1371 iwl_enable_interrupts(priv);
1372 spin_unlock(&priv->lock);
1376 /******************************************************************************
1378 * uCode download functions
1380 ******************************************************************************/
1382 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1384 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1385 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1386 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1387 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1388 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1389 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1392 static void iwl_nic_start(struct iwl_priv *priv)
1394 /* Remove all resets to allow NIC to operate */
1395 iwl_write32(priv, CSR_RESET, 0);
1400 * iwl_read_ucode - Read uCode images from disk file.
1402 * Copy into buffers for card to fetch via bus-mastering
1404 static int iwl_read_ucode(struct iwl_priv *priv)
1406 struct iwl_ucode *ucode;
1407 int ret = -EINVAL, index;
1408 const struct firmware *ucode_raw;
1409 const char *name_pre = priv->cfg->fw_name_pre;
1410 const unsigned int api_max = priv->cfg->ucode_api_max;
1411 const unsigned int api_min = priv->cfg->ucode_api_min;
1415 u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1417 /* Ask kernel firmware_class module to get the boot firmware off disk.
1418 * request_firmware() is synchronous, file is in memory on return. */
1419 for (index = api_max; index >= api_min; index--) {
1420 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1421 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1423 IWL_ERR(priv, "%s firmware file req failed: %d\n",
1430 if (index < api_max)
1431 IWL_ERR(priv, "Loaded firmware %s, "
1432 "which is deprecated. "
1433 "Please use API v%u instead.\n",
1436 IWL_DEBUG_INFO(priv, "Got firmware '%s' file (%zd bytes) from disk\n",
1437 buf, ucode_raw->size);
1445 /* Make sure that we got at least our header! */
1446 if (ucode_raw->size < sizeof(*ucode)) {
1447 IWL_ERR(priv, "File size way too small!\n");
1452 /* Data from ucode file: header followed by uCode images */
1453 ucode = (void *)ucode_raw->data;
1455 priv->ucode_ver = le32_to_cpu(ucode->ver);
1456 api_ver = IWL_UCODE_API(priv->ucode_ver);
1457 inst_size = le32_to_cpu(ucode->inst_size);
1458 data_size = le32_to_cpu(ucode->data_size);
1459 init_size = le32_to_cpu(ucode->init_size);
1460 init_data_size = le32_to_cpu(ucode->init_data_size);
1461 boot_size = le32_to_cpu(ucode->boot_size);
1463 /* api_ver should match the api version forming part of the
1464 * firmware filename ... but we don't check for that and only rely
1465 * on the API version read from firware header from here on forward */
1467 if (api_ver < api_min || api_ver > api_max) {
1468 IWL_ERR(priv, "Driver unable to support your firmware API. "
1469 "Driver supports v%u, firmware is v%u.\n",
1471 priv->ucode_ver = 0;
1475 if (api_ver != api_max)
1476 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1477 "got v%u. New firmware can be obtained "
1478 "from http://www.intellinuxwireless.org.\n",
1481 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1482 IWL_UCODE_MAJOR(priv->ucode_ver),
1483 IWL_UCODE_MINOR(priv->ucode_ver),
1484 IWL_UCODE_API(priv->ucode_ver),
1485 IWL_UCODE_SERIAL(priv->ucode_ver));
1487 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1489 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %u\n",
1491 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %u\n",
1493 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %u\n",
1495 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %u\n",
1497 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %u\n",
1500 /* Verify size of file vs. image size info in file's header */
1501 if (ucode_raw->size < sizeof(*ucode) +
1502 inst_size + data_size + init_size +
1503 init_data_size + boot_size) {
1505 IWL_DEBUG_INFO(priv, "uCode file size %d too small\n",
1506 (int)ucode_raw->size);
1511 /* Verify that uCode images will fit in card's SRAM */
1512 if (inst_size > priv->hw_params.max_inst_size) {
1513 IWL_DEBUG_INFO(priv, "uCode instr len %d too large to fit in\n",
1519 if (data_size > priv->hw_params.max_data_size) {
1520 IWL_DEBUG_INFO(priv, "uCode data len %d too large to fit in\n",
1525 if (init_size > priv->hw_params.max_inst_size) {
1526 IWL_INFO(priv, "uCode init instr len %d too large to fit in\n",
1531 if (init_data_size > priv->hw_params.max_data_size) {
1532 IWL_INFO(priv, "uCode init data len %d too large to fit in\n",
1537 if (boot_size > priv->hw_params.max_bsm_size) {
1538 IWL_INFO(priv, "uCode boot instr len %d too large to fit in\n",
1544 /* Allocate ucode buffers for card's bus-master loading ... */
1546 /* Runtime instructions and 2 copies of data:
1547 * 1) unmodified from disk
1548 * 2) backup cache for save/restore during power-downs */
1549 priv->ucode_code.len = inst_size;
1550 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1552 priv->ucode_data.len = data_size;
1553 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1555 priv->ucode_data_backup.len = data_size;
1556 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1558 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1559 !priv->ucode_data_backup.v_addr)
1562 /* Initialization instructions and data */
1563 if (init_size && init_data_size) {
1564 priv->ucode_init.len = init_size;
1565 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1567 priv->ucode_init_data.len = init_data_size;
1568 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1570 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1574 /* Bootstrap (instructions only, no data) */
1576 priv->ucode_boot.len = boot_size;
1577 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1579 if (!priv->ucode_boot.v_addr)
1583 /* Copy images into buffers for card's bus-master reads ... */
1585 /* Runtime instructions (first block of data in file) */
1586 src = &ucode->data[0];
1587 len = priv->ucode_code.len;
1588 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n", len);
1589 memcpy(priv->ucode_code.v_addr, src, len);
1590 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1591 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1593 /* Runtime data (2nd block)
1594 * NOTE: Copy into backup buffer will be done in iwl_up() */
1595 src = &ucode->data[inst_size];
1596 len = priv->ucode_data.len;
1597 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n", len);
1598 memcpy(priv->ucode_data.v_addr, src, len);
1599 memcpy(priv->ucode_data_backup.v_addr, src, len);
1601 /* Initialization instructions (3rd block) */
1603 src = &ucode->data[inst_size + data_size];
1604 len = priv->ucode_init.len;
1605 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
1607 memcpy(priv->ucode_init.v_addr, src, len);
1610 /* Initialization data (4th block) */
1611 if (init_data_size) {
1612 src = &ucode->data[inst_size + data_size + init_size];
1613 len = priv->ucode_init_data.len;
1614 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
1616 memcpy(priv->ucode_init_data.v_addr, src, len);
1619 /* Bootstrap instructions (5th block) */
1620 src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1621 len = priv->ucode_boot.len;
1622 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n", len);
1623 memcpy(priv->ucode_boot.v_addr, src, len);
1625 /* We have our copies now, allow OS release its copies */
1626 release_firmware(ucode_raw);
1630 IWL_ERR(priv, "failed to allocate pci memory\n");
1632 iwl_dealloc_ucode_pci(priv);
1635 release_firmware(ucode_raw);
1642 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1643 struct sk_buff *skb);
1646 * iwl_alive_start - called after REPLY_ALIVE notification received
1647 * from protocol/runtime uCode (initialization uCode's
1648 * Alive gets handled by iwl_init_alive_start()).
1650 static void iwl_alive_start(struct iwl_priv *priv)
1654 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1656 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1657 /* We had an error bringing up the hardware, so take it
1658 * all the way back down so we can try again */
1659 IWL_DEBUG_INFO(priv, "Alive failed.\n");
1663 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1664 * This is a paranoid check, because we would not have gotten the
1665 * "runtime" alive if code weren't properly loaded. */
1666 if (iwl_verify_ucode(priv)) {
1667 /* Runtime instruction load was bad;
1668 * take it all the way back down so we can try again */
1669 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
1673 iwl_clear_stations_table(priv);
1674 ret = priv->cfg->ops->lib->alive_notify(priv);
1677 "Could not complete ALIVE transition [ntf]: %d\n", ret);
1681 /* After the ALIVE response, we can send host commands to the uCode */
1682 set_bit(STATUS_ALIVE, &priv->status);
1684 if (iwl_is_rfkill(priv))
1687 ieee80211_wake_queues(priv->hw);
1689 priv->active_rate = priv->rates_mask;
1690 priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1692 if (iwl_is_associated(priv)) {
1693 struct iwl_rxon_cmd *active_rxon =
1694 (struct iwl_rxon_cmd *)&priv->active_rxon;
1696 memcpy(&priv->staging_rxon, &priv->active_rxon,
1697 sizeof(priv->staging_rxon));
1698 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1700 /* Initialize our rx_config data */
1701 iwl_connection_init_rx_config(priv, priv->iw_mode);
1702 iwl_set_rxon_chain(priv);
1703 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1706 /* Configure Bluetooth device coexistence support */
1707 iwl_send_bt_config(priv);
1709 iwl_reset_run_time_calib(priv);
1711 /* Configure the adapter for unassociated operation */
1712 iwl_commit_rxon(priv);
1714 /* At this point, the NIC is initialized and operational */
1715 iwl_rf_kill_ct_config(priv);
1717 iwl_leds_register(priv);
1719 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1720 set_bit(STATUS_READY, &priv->status);
1721 wake_up_interruptible(&priv->wait_command_queue);
1723 if (priv->error_recovering)
1724 iwl_error_recovery(priv);
1726 iwl_power_update_mode(priv, 1);
1728 /* reassociate for ADHOC mode */
1729 if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1730 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1733 iwl_mac_beacon_update(priv->hw, beacon);
1737 if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1738 iwl_set_mode(priv, priv->iw_mode);
1743 queue_work(priv->workqueue, &priv->restart);
1746 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1748 static void __iwl_down(struct iwl_priv *priv)
1750 unsigned long flags;
1751 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1753 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1756 set_bit(STATUS_EXIT_PENDING, &priv->status);
1758 iwl_leds_unregister(priv);
1760 iwl_clear_stations_table(priv);
1762 /* Unblock any waiting calls */
1763 wake_up_interruptible_all(&priv->wait_command_queue);
1765 /* Wipe out the EXIT_PENDING status bit if we are not actually
1766 * exiting the module */
1768 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1770 /* stop and reset the on-board processor */
1771 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1773 /* tell the device to stop sending interrupts */
1774 spin_lock_irqsave(&priv->lock, flags);
1775 iwl_disable_interrupts(priv);
1776 spin_unlock_irqrestore(&priv->lock, flags);
1777 iwl_synchronize_irq(priv);
1779 if (priv->mac80211_registered)
1780 ieee80211_stop_queues(priv->hw);
1782 /* If we have not previously called iwl_init() then
1783 * clear all bits but the RF Kill and SUSPEND bits and return */
1784 if (!iwl_is_init(priv)) {
1785 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1787 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1789 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1790 STATUS_GEO_CONFIGURED |
1791 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1793 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1794 STATUS_EXIT_PENDING;
1798 /* ...otherwise clear out all the status bits but the RF Kill and
1799 * SUSPEND bits and continue taking the NIC down. */
1800 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1802 test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1804 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1805 STATUS_GEO_CONFIGURED |
1806 test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1808 test_bit(STATUS_FW_ERROR, &priv->status) <<
1810 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1811 STATUS_EXIT_PENDING;
1813 spin_lock_irqsave(&priv->lock, flags);
1814 iwl_clear_bit(priv, CSR_GP_CNTRL,
1815 CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1816 spin_unlock_irqrestore(&priv->lock, flags);
1818 iwl_txq_ctx_stop(priv);
1821 spin_lock_irqsave(&priv->lock, flags);
1822 if (!iwl_grab_nic_access(priv)) {
1823 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1824 APMG_CLK_VAL_DMA_CLK_RQT);
1825 iwl_release_nic_access(priv);
1827 spin_unlock_irqrestore(&priv->lock, flags);
1831 /* FIXME: apm_ops.suspend(priv) */
1832 if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1833 priv->cfg->ops->lib->apm_ops.stop(priv);
1835 priv->cfg->ops->lib->apm_ops.reset(priv);
1837 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1839 if (priv->ibss_beacon)
1840 dev_kfree_skb(priv->ibss_beacon);
1841 priv->ibss_beacon = NULL;
1843 /* clear out any free frames */
1844 iwl_clear_free_frames(priv);
1847 static void iwl_down(struct iwl_priv *priv)
1849 mutex_lock(&priv->mutex);
1851 mutex_unlock(&priv->mutex);
1853 iwl_cancel_deferred_work(priv);
1856 #define MAX_HW_RESTARTS 5
1858 static int __iwl_up(struct iwl_priv *priv)
1863 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1864 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1868 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
1869 IWL_ERR(priv, "ucode not available for device bringup\n");
1873 /* If platform's RF_KILL switch is NOT set to KILL */
1874 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1875 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1877 set_bit(STATUS_RF_KILL_HW, &priv->status);
1879 if (iwl_is_rfkill(priv)) {
1880 iwl_enable_interrupts(priv);
1881 IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
1882 test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
1886 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1888 ret = iwl_hw_nic_init(priv);
1890 IWL_ERR(priv, "Unable to init nic\n");
1894 /* make sure rfkill handshake bits are cleared */
1895 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1896 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1897 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1899 /* clear (again), then enable host interrupts */
1900 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
1901 iwl_enable_interrupts(priv);
1903 /* really make sure rfkill handshake bits are cleared */
1904 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1905 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1907 /* Copy original ucode data image from disk into backup cache.
1908 * This will be used to initialize the on-board processor's
1909 * data SRAM for a clean start when the runtime program first loads. */
1910 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
1911 priv->ucode_data.len);
1913 for (i = 0; i < MAX_HW_RESTARTS; i++) {
1915 iwl_clear_stations_table(priv);
1917 /* load bootstrap state machine,
1918 * load bootstrap program into processor's memory,
1919 * prepare to load the "initialize" uCode */
1920 ret = priv->cfg->ops->lib->load_ucode(priv);
1923 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
1928 /* Clear out the uCode error bit if it is set */
1929 clear_bit(STATUS_FW_ERROR, &priv->status);
1931 /* start card; "initialize" will load runtime ucode */
1932 iwl_nic_start(priv);
1934 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
1939 set_bit(STATUS_EXIT_PENDING, &priv->status);
1941 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1943 /* tried to restart and config the device for as long as our
1944 * patience could withstand */
1945 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
1950 /*****************************************************************************
1952 * Workqueue callbacks
1954 *****************************************************************************/
1956 static void iwl_bg_init_alive_start(struct work_struct *data)
1958 struct iwl_priv *priv =
1959 container_of(data, struct iwl_priv, init_alive_start.work);
1961 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1964 mutex_lock(&priv->mutex);
1965 priv->cfg->ops->lib->init_alive_start(priv);
1966 mutex_unlock(&priv->mutex);
1969 static void iwl_bg_alive_start(struct work_struct *data)
1971 struct iwl_priv *priv =
1972 container_of(data, struct iwl_priv, alive_start.work);
1974 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1977 mutex_lock(&priv->mutex);
1978 iwl_alive_start(priv);
1979 mutex_unlock(&priv->mutex);
1982 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1984 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1985 run_time_calib_work);
1987 mutex_lock(&priv->mutex);
1989 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1990 test_bit(STATUS_SCANNING, &priv->status)) {
1991 mutex_unlock(&priv->mutex);
1995 if (priv->start_calib) {
1996 iwl_chain_noise_calibration(priv, &priv->statistics);
1998 iwl_sensitivity_calibration(priv, &priv->statistics);
2001 mutex_unlock(&priv->mutex);
2005 static void iwl_bg_up(struct work_struct *data)
2007 struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2009 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2012 mutex_lock(&priv->mutex);
2014 mutex_unlock(&priv->mutex);
2015 iwl_rfkill_set_hw_state(priv);
2018 static void iwl_bg_restart(struct work_struct *data)
2020 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2022 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2026 queue_work(priv->workqueue, &priv->up);
2029 static void iwl_bg_rx_replenish(struct work_struct *data)
2031 struct iwl_priv *priv =
2032 container_of(data, struct iwl_priv, rx_replenish);
2034 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2037 mutex_lock(&priv->mutex);
2038 iwl_rx_replenish(priv);
2039 mutex_unlock(&priv->mutex);
2042 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2044 static void iwl_post_associate(struct iwl_priv *priv)
2046 struct ieee80211_conf *conf = NULL;
2048 unsigned long flags;
2050 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2051 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2055 IWL_DEBUG_ASSOC(priv, "Associated as %d to: %pM\n",
2056 priv->assoc_id, priv->active_rxon.bssid_addr);
2059 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2063 if (!priv->vif || !priv->is_open)
2066 iwl_power_cancel_timeout(priv);
2067 iwl_scan_cancel_timeout(priv, 200);
2069 conf = ieee80211_get_hw_conf(priv->hw);
2071 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2072 iwl_commit_rxon(priv);
2074 iwl_setup_rxon_timing(priv);
2075 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2076 sizeof(priv->rxon_timing), &priv->rxon_timing);
2078 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2079 "Attempting to continue.\n");
2081 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2083 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2085 iwl_set_rxon_chain(priv);
2086 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2088 IWL_DEBUG_ASSOC(priv, "assoc id %d beacon interval %d\n",
2089 priv->assoc_id, priv->beacon_int);
2091 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2092 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2094 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2096 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2097 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2098 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2100 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2102 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2103 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2107 iwl_commit_rxon(priv);
2109 switch (priv->iw_mode) {
2110 case NL80211_IFTYPE_STATION:
2113 case NL80211_IFTYPE_ADHOC:
2115 /* assume default assoc id */
2118 iwl_rxon_add_station(priv, priv->bssid, 0);
2119 iwl_send_beacon_cmd(priv);
2124 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2125 __func__, priv->iw_mode);
2129 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2130 priv->assoc_station_added = 1;
2132 spin_lock_irqsave(&priv->lock, flags);
2133 iwl_activate_qos(priv, 0);
2134 spin_unlock_irqrestore(&priv->lock, flags);
2136 /* the chain noise calibration will enabled PM upon completion
2137 * If chain noise has already been run, then we need to enable
2138 * power management here */
2139 if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2140 iwl_power_enable_management(priv);
2142 /* Enable Rx differential gain and sensitivity calibrations */
2143 iwl_chain_noise_reset(priv);
2144 priv->start_calib = 1;
2148 /*****************************************************************************
2150 * mac80211 entry point functions
2152 *****************************************************************************/
2154 #define UCODE_READY_TIMEOUT (4 * HZ)
2156 static int iwl_mac_start(struct ieee80211_hw *hw)
2158 struct iwl_priv *priv = hw->priv;
2161 IWL_DEBUG_MAC80211(priv, "enter\n");
2163 /* we should be verifying the device is ready to be opened */
2164 mutex_lock(&priv->mutex);
2166 memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2167 /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2168 * ucode filename and max sizes are card-specific. */
2170 if (!priv->ucode_code.len) {
2171 ret = iwl_read_ucode(priv);
2173 IWL_ERR(priv, "Could not read microcode: %d\n", ret);
2174 mutex_unlock(&priv->mutex);
2179 ret = __iwl_up(priv);
2181 mutex_unlock(&priv->mutex);
2183 iwl_rfkill_set_hw_state(priv);
2188 if (iwl_is_rfkill(priv))
2191 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2193 if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2196 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2197 * mac80211 will not be run successfully. */
2198 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2199 test_bit(STATUS_READY, &priv->status),
2200 UCODE_READY_TIMEOUT);
2202 if (!test_bit(STATUS_READY, &priv->status)) {
2203 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2204 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2211 IWL_DEBUG_MAC80211(priv, "leave\n");
2215 static void iwl_mac_stop(struct ieee80211_hw *hw)
2217 struct iwl_priv *priv = hw->priv;
2219 IWL_DEBUG_MAC80211(priv, "enter\n");
2221 if (!priv->is_open) {
2222 IWL_DEBUG_MAC80211(priv, "leave - skip\n");
2228 if (iwl_is_ready_rf(priv)) {
2229 /* stop mac, cancel any scan request and clear
2230 * RXON_FILTER_ASSOC_MSK BIT
2232 mutex_lock(&priv->mutex);
2233 iwl_scan_cancel_timeout(priv, 100);
2234 mutex_unlock(&priv->mutex);
2239 flush_workqueue(priv->workqueue);
2241 /* enable interrupts again in order to receive rfkill changes */
2242 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2243 iwl_enable_interrupts(priv);
2245 IWL_DEBUG_MAC80211(priv, "leave\n");
2248 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2250 struct iwl_priv *priv = hw->priv;
2252 IWL_DEBUG_MACDUMP(priv, "enter\n");
2254 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2255 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2257 if (iwl_tx_skb(priv, skb))
2258 dev_kfree_skb_any(skb);
2260 IWL_DEBUG_MACDUMP(priv, "leave\n");
2261 return NETDEV_TX_OK;
2264 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2265 struct ieee80211_if_init_conf *conf)
2267 struct iwl_priv *priv = hw->priv;
2268 unsigned long flags;
2270 IWL_DEBUG_MAC80211(priv, "enter: type %d\n", conf->type);
2273 IWL_DEBUG_MAC80211(priv, "leave - vif != NULL\n");
2277 spin_lock_irqsave(&priv->lock, flags);
2278 priv->vif = conf->vif;
2279 priv->iw_mode = conf->type;
2281 spin_unlock_irqrestore(&priv->lock, flags);
2283 mutex_lock(&priv->mutex);
2285 if (conf->mac_addr) {
2286 IWL_DEBUG_MAC80211(priv, "Set %pM\n", conf->mac_addr);
2287 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2290 if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2291 /* we are not ready, will run again when ready */
2292 set_bit(STATUS_MODE_PENDING, &priv->status);
2294 mutex_unlock(&priv->mutex);
2296 IWL_DEBUG_MAC80211(priv, "leave\n");
2301 * iwl_mac_config - mac80211 config callback
2303 * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2304 * be set inappropriately and the driver currently sets the hardware up to
2305 * use it whenever needed.
2307 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2309 struct iwl_priv *priv = hw->priv;
2310 const struct iwl_channel_info *ch_info;
2311 struct ieee80211_conf *conf = &hw->conf;
2312 unsigned long flags;
2316 mutex_lock(&priv->mutex);
2317 IWL_DEBUG_MAC80211(priv, "enter to channel %d\n", conf->channel->hw_value);
2319 priv->current_ht_config.is_ht = conf_is_ht(conf);
2321 if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2322 IWL_DEBUG_MAC80211(priv, "leave - RF-KILL - waiting for uCode\n");
2326 if (!conf->radio_enabled)
2327 iwl_radio_kill_sw_disable_radio(priv);
2329 if (!iwl_is_ready(priv)) {
2330 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2335 if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2336 test_bit(STATUS_SCANNING, &priv->status))) {
2337 IWL_DEBUG_MAC80211(priv, "leave - scanning\n");
2338 mutex_unlock(&priv->mutex);
2342 channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2343 ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2344 if (!is_channel_valid(ch_info)) {
2345 IWL_DEBUG_MAC80211(priv, "leave - invalid channel\n");
2350 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2351 !is_channel_ibss(ch_info)) {
2352 IWL_ERR(priv, "channel %d in band %d not IBSS channel\n",
2353 conf->channel->hw_value, conf->channel->band);
2358 spin_lock_irqsave(&priv->lock, flags);
2361 /* if we are switching from ht to 2.4 clear flags
2362 * from any ht related info since 2.4 does not
2364 if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2365 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2366 && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2369 priv->staging_rxon.flags = 0;
2371 iwl_set_rxon_channel(priv, conf->channel);
2373 iwl_set_flags_for_band(priv, conf->channel->band);
2375 /* The list of supported rates and rate mask can be different
2376 * for each band; since the band may have changed, reset
2377 * the rate mask to what mac80211 lists */
2380 spin_unlock_irqrestore(&priv->lock, flags);
2382 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2383 if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2384 iwl_hw_channel_switch(priv, conf->channel);
2389 if (!conf->radio_enabled) {
2390 IWL_DEBUG_MAC80211(priv, "leave - radio disabled\n");
2394 if (iwl_is_rfkill(priv)) {
2395 IWL_DEBUG_MAC80211(priv, "leave - RF kill\n");
2400 if (conf->flags & IEEE80211_CONF_PS)
2401 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2403 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2405 IWL_DEBUG_MAC80211(priv, "Error setting power level\n");
2407 IWL_DEBUG_MAC80211(priv, "TX Power old=%d new=%d\n",
2408 priv->tx_power_user_lmt, conf->power_level);
2410 iwl_set_tx_power(priv, conf->power_level, false);
2414 /* call to ensure that 4965 rx_chain is set properly in monitor mode */
2415 iwl_set_rxon_chain(priv);
2417 if (memcmp(&priv->active_rxon,
2418 &priv->staging_rxon, sizeof(priv->staging_rxon)))
2419 iwl_commit_rxon(priv);
2421 IWL_DEBUG_INFO(priv, "No re-sending same RXON configuration.\n");
2423 IWL_DEBUG_MAC80211(priv, "leave\n");
2426 mutex_unlock(&priv->mutex);
2430 static void iwl_config_ap(struct iwl_priv *priv)
2433 unsigned long flags;
2435 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2438 /* The following should be done only at AP bring up */
2439 if (!iwl_is_associated(priv)) {
2441 /* RXON - unassoc (to set timing command) */
2442 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2443 iwl_commit_rxon(priv);
2446 iwl_setup_rxon_timing(priv);
2447 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2448 sizeof(priv->rxon_timing), &priv->rxon_timing);
2450 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2451 "Attempting to continue.\n");
2453 iwl_set_rxon_chain(priv);
2455 /* FIXME: what should be the assoc_id for AP? */
2456 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2457 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2458 priv->staging_rxon.flags |=
2459 RXON_FLG_SHORT_PREAMBLE_MSK;
2461 priv->staging_rxon.flags &=
2462 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2464 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2465 if (priv->assoc_capability &
2466 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2467 priv->staging_rxon.flags |=
2468 RXON_FLG_SHORT_SLOT_MSK;
2470 priv->staging_rxon.flags &=
2471 ~RXON_FLG_SHORT_SLOT_MSK;
2473 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2474 priv->staging_rxon.flags &=
2475 ~RXON_FLG_SHORT_SLOT_MSK;
2477 /* restore RXON assoc */
2478 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2479 iwl_commit_rxon(priv);
2480 spin_lock_irqsave(&priv->lock, flags);
2481 iwl_activate_qos(priv, 1);
2482 spin_unlock_irqrestore(&priv->lock, flags);
2483 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2485 iwl_send_beacon_cmd(priv);
2487 /* FIXME - we need to add code here to detect a totally new
2488 * configuration, reset the AP, unassoc, rxon timing, assoc,
2489 * clear sta table, add BCAST sta... */
2493 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2494 struct ieee80211_vif *vif,
2495 struct ieee80211_if_conf *conf)
2497 struct iwl_priv *priv = hw->priv;
2503 if (priv->vif != vif) {
2504 IWL_DEBUG_MAC80211(priv, "leave - priv->vif != vif\n");
2508 if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2509 conf->changed & IEEE80211_IFCC_BEACON) {
2510 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2513 mutex_lock(&priv->mutex);
2514 rc = iwl_mac_beacon_update(hw, beacon);
2515 mutex_unlock(&priv->mutex);
2520 if (!iwl_is_alive(priv))
2523 mutex_lock(&priv->mutex);
2526 IWL_DEBUG_MAC80211(priv, "bssid: %pM\n", conf->bssid);
2529 * very dubious code was here; the probe filtering flag is never set:
2531 if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2532 !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2535 if (priv->iw_mode == NL80211_IFTYPE_AP) {
2537 conf->bssid = priv->mac_addr;
2538 memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2539 IWL_DEBUG_MAC80211(priv, "bssid was set to: %pM\n",
2542 if (priv->ibss_beacon)
2543 dev_kfree_skb(priv->ibss_beacon);
2545 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2548 if (iwl_is_rfkill(priv))
2551 if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2552 !is_multicast_ether_addr(conf->bssid)) {
2553 /* If there is currently a HW scan going on in the background
2554 * then we need to cancel it else the RXON below will fail. */
2555 if (iwl_scan_cancel_timeout(priv, 100)) {
2556 IWL_WARN(priv, "Aborted scan still in progress "
2558 IWL_DEBUG_MAC80211(priv, "leaving - scan abort failed.\n");
2559 mutex_unlock(&priv->mutex);
2562 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2564 /* TODO: Audit driver for usage of these members and see
2565 * if mac80211 deprecates them (priv->bssid looks like it
2566 * shouldn't be there, but I haven't scanned the IBSS code
2567 * to verify) - jpk */
2568 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2570 if (priv->iw_mode == NL80211_IFTYPE_AP)
2571 iwl_config_ap(priv);
2573 rc = iwl_commit_rxon(priv);
2574 if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2575 iwl_rxon_add_station(
2576 priv, priv->active_rxon.bssid_addr, 1);
2580 iwl_scan_cancel_timeout(priv, 100);
2581 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2582 iwl_commit_rxon(priv);
2586 IWL_DEBUG_MAC80211(priv, "leave\n");
2587 mutex_unlock(&priv->mutex);
2592 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2593 struct ieee80211_if_init_conf *conf)
2595 struct iwl_priv *priv = hw->priv;
2597 IWL_DEBUG_MAC80211(priv, "enter\n");
2599 mutex_lock(&priv->mutex);
2601 if (iwl_is_ready_rf(priv)) {
2602 iwl_scan_cancel_timeout(priv, 100);
2603 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2604 iwl_commit_rxon(priv);
2606 if (priv->vif == conf->vif) {
2608 memset(priv->bssid, 0, ETH_ALEN);
2610 mutex_unlock(&priv->mutex);
2612 IWL_DEBUG_MAC80211(priv, "leave\n");
2616 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2617 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2618 struct ieee80211_vif *vif,
2619 struct ieee80211_bss_conf *bss_conf,
2622 struct iwl_priv *priv = hw->priv;
2624 IWL_DEBUG_MAC80211(priv, "changes = 0x%X\n", changes);
2626 if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2627 IWL_DEBUG_MAC80211(priv, "ERP_PREAMBLE %d\n",
2628 bss_conf->use_short_preamble);
2629 if (bss_conf->use_short_preamble)
2630 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2632 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2635 if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2636 IWL_DEBUG_MAC80211(priv, "ERP_CTS %d\n", bss_conf->use_cts_prot);
2637 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2638 priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2640 priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2643 if (changes & BSS_CHANGED_HT) {
2644 iwl_ht_conf(priv, bss_conf);
2645 iwl_set_rxon_chain(priv);
2648 if (changes & BSS_CHANGED_ASSOC) {
2649 IWL_DEBUG_MAC80211(priv, "ASSOC %d\n", bss_conf->assoc);
2650 /* This should never happen as this function should
2651 * never be called from interrupt context. */
2652 if (WARN_ON_ONCE(in_interrupt()))
2654 if (bss_conf->assoc) {
2655 priv->assoc_id = bss_conf->aid;
2656 priv->beacon_int = bss_conf->beacon_int;
2657 priv->power_data.dtim_period = bss_conf->dtim_period;
2658 priv->timestamp = bss_conf->timestamp;
2659 priv->assoc_capability = bss_conf->assoc_capability;
2661 /* we have just associated, don't start scan too early
2662 * leave time for EAPOL exchange to complete
2664 priv->next_scan_jiffies = jiffies +
2665 IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2666 mutex_lock(&priv->mutex);
2667 iwl_post_associate(priv);
2668 mutex_unlock(&priv->mutex);
2671 IWL_DEBUG_MAC80211(priv, "DISASSOC %d\n", bss_conf->assoc);
2673 } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2674 IWL_DEBUG_MAC80211(priv, "Associated Changes %d\n", changes);
2675 iwl_send_rxon_assoc(priv);
2680 static int iwl_mac_hw_scan(struct ieee80211_hw *hw,
2681 struct cfg80211_scan_request *req)
2683 unsigned long flags;
2684 struct iwl_priv *priv = hw->priv;
2687 size_t ssid_len = 0;
2690 ssid = req->ssids[0].ssid;
2691 ssid_len = req->ssids[0].ssid_len;
2694 IWL_DEBUG_MAC80211(priv, "enter\n");
2696 mutex_lock(&priv->mutex);
2697 spin_lock_irqsave(&priv->lock, flags);
2699 if (!iwl_is_ready_rf(priv)) {
2701 IWL_DEBUG_MAC80211(priv, "leave - not ready or exit pending\n");
2705 /* We don't schedule scan within next_scan_jiffies period.
2706 * Avoid scanning during possible EAPOL exchange, return
2707 * success immediately.
2709 if (priv->next_scan_jiffies &&
2710 time_after(priv->next_scan_jiffies, jiffies)) {
2711 IWL_DEBUG_SCAN(priv, "scan rejected: within next scan period\n");
2712 queue_work(priv->workqueue, &priv->scan_completed);
2717 /* if we just finished scan ask for delay */
2718 if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
2719 time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
2720 IWL_DEBUG_SCAN(priv, "scan rejected: within previous scan period\n");
2721 queue_work(priv->workqueue, &priv->scan_completed);
2727 priv->one_direct_scan = 1;
2728 priv->direct_ssid_len = ssid_len;
2729 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
2731 priv->one_direct_scan = 0;
2734 ret = iwl_scan_initiate(priv);
2736 IWL_DEBUG_MAC80211(priv, "leave\n");
2739 spin_unlock_irqrestore(&priv->lock, flags);
2740 mutex_unlock(&priv->mutex);
2745 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2746 struct ieee80211_key_conf *keyconf, const u8 *addr,
2747 u32 iv32, u16 *phase1key)
2750 struct iwl_priv *priv = hw->priv;
2751 IWL_DEBUG_MAC80211(priv, "enter\n");
2753 iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2755 IWL_DEBUG_MAC80211(priv, "leave\n");
2758 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2759 struct ieee80211_vif *vif,
2760 struct ieee80211_sta *sta,
2761 struct ieee80211_key_conf *key)
2763 struct iwl_priv *priv = hw->priv;
2767 bool is_default_wep_key = false;
2769 IWL_DEBUG_MAC80211(priv, "enter\n");
2771 if (priv->hw_params.sw_crypto) {
2772 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2775 addr = sta ? sta->addr : iwl_bcast_addr;
2776 sta_id = iwl_find_station(priv, addr);
2777 if (sta_id == IWL_INVALID_STATION) {
2778 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
2784 mutex_lock(&priv->mutex);
2785 iwl_scan_cancel_timeout(priv, 100);
2786 mutex_unlock(&priv->mutex);
2788 /* If we are getting WEP group key and we didn't receive any key mapping
2789 * so far, we are in legacy wep mode (group key only), otherwise we are
2791 * In legacy wep mode, we use another host command to the uCode */
2792 if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
2793 priv->iw_mode != NL80211_IFTYPE_AP) {
2795 is_default_wep_key = !priv->key_mapping_key;
2797 is_default_wep_key =
2798 (key->hw_key_idx == HW_KEY_DEFAULT);
2803 if (is_default_wep_key)
2804 ret = iwl_set_default_wep_key(priv, key);
2806 ret = iwl_set_dynamic_key(priv, key, sta_id);
2808 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2811 if (is_default_wep_key)
2812 ret = iwl_remove_default_wep_key(priv, key);
2814 ret = iwl_remove_dynamic_key(priv, key, sta_id);
2816 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2822 IWL_DEBUG_MAC80211(priv, "leave\n");
2827 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
2828 const struct ieee80211_tx_queue_params *params)
2830 struct iwl_priv *priv = hw->priv;
2831 unsigned long flags;
2834 IWL_DEBUG_MAC80211(priv, "enter\n");
2836 if (!iwl_is_ready_rf(priv)) {
2837 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2841 if (queue >= AC_NUM) {
2842 IWL_DEBUG_MAC80211(priv, "leave - queue >= AC_NUM %d\n", queue);
2846 q = AC_NUM - 1 - queue;
2848 spin_lock_irqsave(&priv->lock, flags);
2850 priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
2851 priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
2852 priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
2853 priv->qos_data.def_qos_parm.ac[q].edca_txop =
2854 cpu_to_le16((params->txop * 32));
2856 priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
2857 priv->qos_data.qos_active = 1;
2859 if (priv->iw_mode == NL80211_IFTYPE_AP)
2860 iwl_activate_qos(priv, 1);
2861 else if (priv->assoc_id && iwl_is_associated(priv))
2862 iwl_activate_qos(priv, 0);
2864 spin_unlock_irqrestore(&priv->lock, flags);
2866 IWL_DEBUG_MAC80211(priv, "leave\n");
2870 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
2871 enum ieee80211_ampdu_mlme_action action,
2872 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
2874 struct iwl_priv *priv = hw->priv;
2876 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2879 if (!(priv->cfg->sku & IWL_SKU_N))
2883 case IEEE80211_AMPDU_RX_START:
2884 IWL_DEBUG_HT(priv, "start Rx\n");
2885 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
2886 case IEEE80211_AMPDU_RX_STOP:
2887 IWL_DEBUG_HT(priv, "stop Rx\n");
2888 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
2889 case IEEE80211_AMPDU_TX_START:
2890 IWL_DEBUG_HT(priv, "start Tx\n");
2891 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
2892 case IEEE80211_AMPDU_TX_STOP:
2893 IWL_DEBUG_HT(priv, "stop Tx\n");
2894 return iwl_tx_agg_stop(priv, sta->addr, tid);
2896 IWL_DEBUG_HT(priv, "unknown\n");
2903 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
2904 struct ieee80211_tx_queue_stats *stats)
2906 struct iwl_priv *priv = hw->priv;
2908 struct iwl_tx_queue *txq;
2909 struct iwl_queue *q;
2910 unsigned long flags;
2912 IWL_DEBUG_MAC80211(priv, "enter\n");
2914 if (!iwl_is_ready_rf(priv)) {
2915 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
2919 spin_lock_irqsave(&priv->lock, flags);
2921 for (i = 0; i < AC_NUM; i++) {
2922 txq = &priv->txq[i];
2924 avail = iwl_queue_space(q);
2926 stats[i].len = q->n_window - avail;
2927 stats[i].limit = q->n_window - q->high_mark;
2928 stats[i].count = q->n_window;
2931 spin_unlock_irqrestore(&priv->lock, flags);
2933 IWL_DEBUG_MAC80211(priv, "leave\n");
2938 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
2939 struct ieee80211_low_level_stats *stats)
2941 struct iwl_priv *priv = hw->priv;
2944 IWL_DEBUG_MAC80211(priv, "enter\n");
2945 IWL_DEBUG_MAC80211(priv, "leave\n");
2950 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
2952 struct iwl_priv *priv = hw->priv;
2953 unsigned long flags;
2955 mutex_lock(&priv->mutex);
2956 IWL_DEBUG_MAC80211(priv, "enter\n");
2958 spin_lock_irqsave(&priv->lock, flags);
2959 memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
2960 spin_unlock_irqrestore(&priv->lock, flags);
2962 iwl_reset_qos(priv);
2964 spin_lock_irqsave(&priv->lock, flags);
2966 priv->assoc_capability = 0;
2967 priv->assoc_station_added = 0;
2969 /* new association get rid of ibss beacon skb */
2970 if (priv->ibss_beacon)
2971 dev_kfree_skb(priv->ibss_beacon);
2973 priv->ibss_beacon = NULL;
2975 priv->beacon_int = priv->hw->conf.beacon_int;
2976 priv->timestamp = 0;
2977 if ((priv->iw_mode == NL80211_IFTYPE_STATION))
2978 priv->beacon_int = 0;
2980 spin_unlock_irqrestore(&priv->lock, flags);
2982 if (!iwl_is_ready_rf(priv)) {
2983 IWL_DEBUG_MAC80211(priv, "leave - not ready\n");
2984 mutex_unlock(&priv->mutex);
2988 /* we are restarting association process
2989 * clear RXON_FILTER_ASSOC_MSK bit
2991 if (priv->iw_mode != NL80211_IFTYPE_AP) {
2992 iwl_scan_cancel_timeout(priv, 100);
2993 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2994 iwl_commit_rxon(priv);
2997 iwl_power_update_mode(priv, 0);
2999 /* Per mac80211.h: This is only used in IBSS mode... */
3000 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3002 /* switch to CAM during association period.
3003 * the ucode will block any association/authentication
3004 * frome during assiciation period if it can not hear
3005 * the AP because of PM. the timer enable PM back is
3006 * association do not complete
3008 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3009 IEEE80211_CHAN_RADAR))
3010 iwl_power_disable_management(priv, 3000);
3012 IWL_DEBUG_MAC80211(priv, "leave - not in IBSS\n");
3013 mutex_unlock(&priv->mutex);
3019 mutex_unlock(&priv->mutex);
3021 IWL_DEBUG_MAC80211(priv, "leave\n");
3024 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3026 struct iwl_priv *priv = hw->priv;
3027 unsigned long flags;
3030 IWL_DEBUG_MAC80211(priv, "enter\n");
3032 if (!iwl_is_ready_rf(priv)) {
3033 IWL_DEBUG_MAC80211(priv, "leave - RF not ready\n");
3037 if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3038 IWL_DEBUG_MAC80211(priv, "leave - not IBSS\n");
3042 spin_lock_irqsave(&priv->lock, flags);
3044 if (priv->ibss_beacon)
3045 dev_kfree_skb(priv->ibss_beacon);
3047 priv->ibss_beacon = skb;
3050 timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3051 priv->timestamp = le64_to_cpu(timestamp);
3053 IWL_DEBUG_MAC80211(priv, "leave\n");
3054 spin_unlock_irqrestore(&priv->lock, flags);
3056 iwl_reset_qos(priv);
3058 iwl_post_associate(priv);
3064 /*****************************************************************************
3068 *****************************************************************************/
3070 #ifdef CONFIG_IWLWIFI_DEBUG
3073 * The following adds a new attribute to the sysfs representation
3074 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3075 * used for controlling the debug level.
3077 * See the level definitions in iwl for details.
3080 static ssize_t show_debug_level(struct device *d,
3081 struct device_attribute *attr, char *buf)
3083 struct iwl_priv *priv = d->driver_data;
3085 return sprintf(buf, "0x%08X\n", priv->debug_level);
3087 static ssize_t store_debug_level(struct device *d,
3088 struct device_attribute *attr,
3089 const char *buf, size_t count)
3091 struct iwl_priv *priv = d->driver_data;
3095 ret = strict_strtoul(buf, 0, &val);
3097 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
3099 priv->debug_level = val;
3101 return strnlen(buf, count);
3104 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3105 show_debug_level, store_debug_level);
3108 #endif /* CONFIG_IWLWIFI_DEBUG */
3111 static ssize_t show_version(struct device *d,
3112 struct device_attribute *attr, char *buf)
3114 struct iwl_priv *priv = d->driver_data;
3115 struct iwl_alive_resp *palive = &priv->card_alive;
3119 if (palive->is_valid)
3120 pos += sprintf(buf + pos,
3121 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3122 "fw type: 0x%01X 0x%01X\n",
3123 palive->ucode_major, palive->ucode_minor,
3124 palive->sw_rev[0], palive->sw_rev[1],
3125 palive->ver_type, palive->ver_subtype);
3127 pos += sprintf(buf + pos, "fw not loaded\n");
3130 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3131 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3134 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3140 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3142 static ssize_t show_temperature(struct device *d,
3143 struct device_attribute *attr, char *buf)
3145 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3147 if (!iwl_is_alive(priv))
3150 return sprintf(buf, "%d\n", priv->temperature);
3153 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3155 static ssize_t show_tx_power(struct device *d,
3156 struct device_attribute *attr, char *buf)
3158 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3160 if (!iwl_is_ready_rf(priv))
3161 return sprintf(buf, "off\n");
3163 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3166 static ssize_t store_tx_power(struct device *d,
3167 struct device_attribute *attr,
3168 const char *buf, size_t count)
3170 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3174 ret = strict_strtoul(buf, 10, &val);
3176 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
3178 iwl_set_tx_power(priv, val, false);
3183 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3185 static ssize_t show_flags(struct device *d,
3186 struct device_attribute *attr, char *buf)
3188 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3190 return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3193 static ssize_t store_flags(struct device *d,
3194 struct device_attribute *attr,
3195 const char *buf, size_t count)
3197 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3200 int ret = strict_strtoul(buf, 0, &val);
3205 mutex_lock(&priv->mutex);
3206 if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3207 /* Cancel any currently running scans... */
3208 if (iwl_scan_cancel_timeout(priv, 100))
3209 IWL_WARN(priv, "Could not cancel scan.\n");
3211 IWL_DEBUG_INFO(priv, "Commit rxon.flags = 0x%04X\n", flags);
3212 priv->staging_rxon.flags = cpu_to_le32(flags);
3213 iwl_commit_rxon(priv);
3216 mutex_unlock(&priv->mutex);
3221 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3223 static ssize_t show_filter_flags(struct device *d,
3224 struct device_attribute *attr, char *buf)
3226 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3228 return sprintf(buf, "0x%04X\n",
3229 le32_to_cpu(priv->active_rxon.filter_flags));
3232 static ssize_t store_filter_flags(struct device *d,
3233 struct device_attribute *attr,
3234 const char *buf, size_t count)
3236 struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3239 int ret = strict_strtoul(buf, 0, &val);
3242 filter_flags = (u32)val;
3244 mutex_lock(&priv->mutex);
3245 if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3246 /* Cancel any currently running scans... */
3247 if (iwl_scan_cancel_timeout(priv, 100))
3248 IWL_WARN(priv, "Could not cancel scan.\n");
3250 IWL_DEBUG_INFO(priv, "Committing rxon.filter_flags = "
3251 "0x%04X\n", filter_flags);
3252 priv->staging_rxon.filter_flags =
3253 cpu_to_le32(filter_flags);
3254 iwl_commit_rxon(priv);
3257 mutex_unlock(&priv->mutex);
3262 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3263 store_filter_flags);
3265 static ssize_t store_power_level(struct device *d,
3266 struct device_attribute *attr,
3267 const char *buf, size_t count)
3269 struct iwl_priv *priv = dev_get_drvdata(d);
3274 mutex_lock(&priv->mutex);
3276 if (!iwl_is_ready(priv)) {
3281 ret = strict_strtoul(buf, 10, &mode);
3285 ret = iwl_power_set_user_mode(priv, mode);
3287 IWL_DEBUG_MAC80211(priv, "failed setting power mode.\n");
3293 mutex_unlock(&priv->mutex);
3297 static ssize_t show_power_level(struct device *d,
3298 struct device_attribute *attr, char *buf)
3300 struct iwl_priv *priv = dev_get_drvdata(d);
3301 int mode = priv->power_data.user_power_setting;
3302 int system = priv->power_data.system_power_setting;
3303 int level = priv->power_data.power_mode;
3307 case IWL_POWER_SYS_AUTO:
3308 p += sprintf(p, "SYSTEM:auto");
3310 case IWL_POWER_SYS_AC:
3311 p += sprintf(p, "SYSTEM:ac");
3313 case IWL_POWER_SYS_BATTERY:
3314 p += sprintf(p, "SYSTEM:battery");
3318 p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3320 p += sprintf(p, "\tINDEX:%d", level);
3321 p += sprintf(p, "\n");
3325 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3329 static ssize_t show_statistics(struct device *d,
3330 struct device_attribute *attr, char *buf)
3332 struct iwl_priv *priv = dev_get_drvdata(d);
3333 u32 size = sizeof(struct iwl_notif_statistics);
3334 u32 len = 0, ofs = 0;
3335 u8 *data = (u8 *)&priv->statistics;
3338 if (!iwl_is_alive(priv))
3341 mutex_lock(&priv->mutex);
3342 rc = iwl_send_statistics_request(priv, 0);
3343 mutex_unlock(&priv->mutex);
3347 "Error sending statistics request: 0x%08X\n", rc);
3351 while (size && (PAGE_SIZE - len)) {
3352 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3353 PAGE_SIZE - len, 1);
3355 if (PAGE_SIZE - len)
3359 size -= min(size, 16U);
3365 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3368 /*****************************************************************************
3370 * driver setup and teardown
3372 *****************************************************************************/
3374 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3376 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3378 init_waitqueue_head(&priv->wait_command_queue);
3380 INIT_WORK(&priv->up, iwl_bg_up);
3381 INIT_WORK(&priv->restart, iwl_bg_restart);
3382 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3383 INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3384 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3385 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3386 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3387 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3389 iwl_setup_scan_deferred_work(priv);
3390 iwl_setup_power_deferred_work(priv);
3392 if (priv->cfg->ops->lib->setup_deferred_work)
3393 priv->cfg->ops->lib->setup_deferred_work(priv);
3395 init_timer(&priv->statistics_periodic);
3396 priv->statistics_periodic.data = (unsigned long)priv;
3397 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3399 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3400 iwl_irq_tasklet, (unsigned long)priv);
3403 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3405 if (priv->cfg->ops->lib->cancel_deferred_work)
3406 priv->cfg->ops->lib->cancel_deferred_work(priv);
3408 cancel_delayed_work_sync(&priv->init_alive_start);
3409 cancel_delayed_work(&priv->scan_check);
3410 cancel_delayed_work_sync(&priv->set_power_save);
3411 cancel_delayed_work(&priv->alive_start);
3412 cancel_work_sync(&priv->beacon_update);
3413 del_timer_sync(&priv->statistics_periodic);
3416 static struct attribute *iwl_sysfs_entries[] = {
3417 &dev_attr_flags.attr,
3418 &dev_attr_filter_flags.attr,
3419 &dev_attr_power_level.attr,
3420 &dev_attr_statistics.attr,
3421 &dev_attr_temperature.attr,
3422 &dev_attr_tx_power.attr,
3423 #ifdef CONFIG_IWLWIFI_DEBUG
3424 &dev_attr_debug_level.attr,
3426 &dev_attr_version.attr,
3431 static struct attribute_group iwl_attribute_group = {
3432 .name = NULL, /* put in device directory */
3433 .attrs = iwl_sysfs_entries,
3436 static struct ieee80211_ops iwl_hw_ops = {
3438 .start = iwl_mac_start,
3439 .stop = iwl_mac_stop,
3440 .add_interface = iwl_mac_add_interface,
3441 .remove_interface = iwl_mac_remove_interface,
3442 .config = iwl_mac_config,
3443 .config_interface = iwl_mac_config_interface,
3444 .configure_filter = iwl_configure_filter,
3445 .set_key = iwl_mac_set_key,
3446 .update_tkip_key = iwl_mac_update_tkip_key,
3447 .get_stats = iwl_mac_get_stats,
3448 .get_tx_stats = iwl_mac_get_tx_stats,
3449 .conf_tx = iwl_mac_conf_tx,
3450 .reset_tsf = iwl_mac_reset_tsf,
3451 .bss_info_changed = iwl_bss_info_changed,
3452 .ampdu_action = iwl_mac_ampdu_action,
3453 .hw_scan = iwl_mac_hw_scan
3456 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3459 struct iwl_priv *priv;
3460 struct ieee80211_hw *hw;
3461 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3462 unsigned long flags;
3465 /************************
3466 * 1. Allocating HW data
3467 ************************/
3469 /* Disabling hardware scan means that mac80211 will perform scans
3470 * "the hard way", rather than using device's scan. */
3471 if (cfg->mod_params->disable_hw_scan) {
3472 if (cfg->mod_params->debug & IWL_DL_INFO)
3473 dev_printk(KERN_DEBUG, &(pdev->dev),
3474 "Disabling hw_scan\n");
3475 iwl_hw_ops.hw_scan = NULL;
3478 hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3484 /* At this point both hw and priv are allocated. */
3486 SET_IEEE80211_DEV(hw, &pdev->dev);
3488 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3490 priv->pci_dev = pdev;
3492 #ifdef CONFIG_IWLWIFI_DEBUG
3493 priv->debug_level = priv->cfg->mod_params->debug;
3494 atomic_set(&priv->restrict_refcnt, 0);
3497 /**************************
3498 * 2. Initializing PCI bus
3499 **************************/
3500 if (pci_enable_device(pdev)) {
3502 goto out_ieee80211_free_hw;
3505 pci_set_master(pdev);
3507 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3509 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3511 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3513 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3514 /* both attempts failed: */
3516 IWL_WARN(priv, "No suitable DMA available.\n");
3517 goto out_pci_disable_device;
3521 err = pci_request_regions(pdev, DRV_NAME);
3523 goto out_pci_disable_device;
3525 pci_set_drvdata(pdev, priv);
3528 /***********************
3529 * 3. Read REV register
3530 ***********************/
3531 priv->hw_base = pci_iomap(pdev, 0, 0);
3532 if (!priv->hw_base) {
3534 goto out_pci_release_regions;
3537 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
3538 (unsigned long long) pci_resource_len(pdev, 0));
3539 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
3541 iwl_hw_detect(priv);
3542 IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3543 priv->cfg->name, priv->hw_rev);
3545 /* We disable the RETRY_TIMEOUT register (0x41) to keep
3546 * PCI Tx retries from interfering with C3 CPU state */
3547 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3550 err = priv->cfg->ops->lib->apm_ops.init(priv);
3552 IWL_DEBUG_INFO(priv, "Failed to init APMG\n");
3558 /* Read the EEPROM */
3559 err = iwl_eeprom_init(priv);
3561 IWL_ERR(priv, "Unable to init EEPROM\n");
3564 err = iwl_eeprom_check_version(priv);
3568 /* extract MAC Address */
3569 iwl_eeprom_get_mac(priv, priv->mac_addr);
3570 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->mac_addr);
3571 SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3573 /************************
3574 * 5. Setup HW constants
3575 ************************/
3576 if (iwl_set_hw_params(priv)) {
3577 IWL_ERR(priv, "failed to set hw parameters\n");
3578 goto out_free_eeprom;
3581 /*******************
3583 *******************/
3585 err = iwl_init_drv(priv);
3587 goto out_free_eeprom;
3588 /* At this point both hw and priv are initialized. */
3590 /**********************************
3591 * 7. Initialize module parameters
3592 **********************************/
3594 /* Disable radio (SW RF KILL) via parameter when loading driver */
3595 if (priv->cfg->mod_params->disable) {
3596 set_bit(STATUS_RF_KILL_SW, &priv->status);
3597 IWL_DEBUG_INFO(priv, "Radio disabled.\n");
3600 /********************
3602 ********************/
3603 spin_lock_irqsave(&priv->lock, flags);
3604 iwl_disable_interrupts(priv);
3605 spin_unlock_irqrestore(&priv->lock, flags);
3607 pci_enable_msi(priv->pci_dev);
3609 err = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
3612 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3613 goto out_disable_msi;
3615 err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3617 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3621 iwl_setup_deferred_work(priv);
3622 iwl_setup_rx_handlers(priv);
3624 /**********************************
3625 * 9. Setup and register mac80211
3626 **********************************/
3628 /* enable interrupts if needed: hw bug w/a */
3629 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
3630 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
3631 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
3632 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
3635 iwl_enable_interrupts(priv);
3637 err = iwl_setup_mac(priv);
3639 goto out_remove_sysfs;
3641 err = iwl_dbgfs_register(priv, DRV_NAME);
3643 IWL_ERR(priv, "failed to create debugfs files\n");
3645 /* If platform's RF_KILL switch is NOT set to KILL */
3646 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3647 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3649 set_bit(STATUS_RF_KILL_HW, &priv->status);
3651 err = iwl_rfkill_init(priv);
3653 IWL_ERR(priv, "Unable to initialize RFKILL system. "
3654 "Ignoring error: %d\n", err);
3656 iwl_rfkill_set_hw_state(priv);
3658 iwl_power_initialize(priv);
3662 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3664 free_irq(priv->pci_dev->irq, priv);
3666 pci_disable_msi(priv->pci_dev);
3667 iwl_uninit_drv(priv);
3669 iwl_eeprom_free(priv);
3671 pci_iounmap(pdev, priv->hw_base);
3672 out_pci_release_regions:
3673 pci_release_regions(pdev);
3674 pci_set_drvdata(pdev, NULL);
3675 out_pci_disable_device:
3676 pci_disable_device(pdev);
3677 out_ieee80211_free_hw:
3678 ieee80211_free_hw(priv->hw);
3683 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3685 struct iwl_priv *priv = pci_get_drvdata(pdev);
3686 unsigned long flags;
3691 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3693 iwl_dbgfs_unregister(priv);
3694 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3696 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3697 * to be called and iwl_down since we are removing the device
3698 * we need to set STATUS_EXIT_PENDING bit.
3700 set_bit(STATUS_EXIT_PENDING, &priv->status);
3701 if (priv->mac80211_registered) {
3702 ieee80211_unregister_hw(priv->hw);
3703 priv->mac80211_registered = 0;
3708 /* make sure we flush any pending irq or
3709 * tasklet for the driver
3711 spin_lock_irqsave(&priv->lock, flags);
3712 iwl_disable_interrupts(priv);
3713 spin_unlock_irqrestore(&priv->lock, flags);
3715 iwl_synchronize_irq(priv);
3717 iwl_rfkill_unregister(priv);
3718 iwl_dealloc_ucode_pci(priv);
3721 iwl_rx_queue_free(priv, &priv->rxq);
3722 iwl_hw_txq_ctx_free(priv);
3724 iwl_clear_stations_table(priv);
3725 iwl_eeprom_free(priv);
3728 /*netif_stop_queue(dev); */
3729 flush_workqueue(priv->workqueue);
3731 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3732 * priv->workqueue... so we can't take down the workqueue
3734 destroy_workqueue(priv->workqueue);
3735 priv->workqueue = NULL;
3737 free_irq(priv->pci_dev->irq, priv);
3738 pci_disable_msi(priv->pci_dev);
3739 pci_iounmap(pdev, priv->hw_base);
3740 pci_release_regions(pdev);
3741 pci_disable_device(pdev);
3742 pci_set_drvdata(pdev, NULL);
3744 iwl_uninit_drv(priv);
3746 if (priv->ibss_beacon)
3747 dev_kfree_skb(priv->ibss_beacon);
3749 ieee80211_free_hw(priv->hw);
3754 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3756 struct iwl_priv *priv = pci_get_drvdata(pdev);
3758 if (priv->is_open) {
3759 set_bit(STATUS_IN_SUSPEND, &priv->status);
3760 iwl_mac_stop(priv->hw);
3764 pci_save_state(pdev);
3765 pci_disable_device(pdev);
3766 pci_set_power_state(pdev, PCI_D3hot);
3771 static int iwl_pci_resume(struct pci_dev *pdev)
3773 struct iwl_priv *priv = pci_get_drvdata(pdev);
3776 pci_set_power_state(pdev, PCI_D0);
3777 ret = pci_enable_device(pdev);
3780 pci_restore_state(pdev);
3781 iwl_enable_interrupts(priv);
3784 iwl_mac_start(priv->hw);
3786 clear_bit(STATUS_IN_SUSPEND, &priv->status);
3790 #endif /* CONFIG_PM */
3792 /*****************************************************************************
3794 * driver and module entry point
3796 *****************************************************************************/
3798 /* Hardware specific file defines the PCI IDs table for that hardware module */
3799 static struct pci_device_id iwl_hw_card_ids[] = {
3800 #ifdef CONFIG_IWL4965
3801 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
3802 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
3803 #endif /* CONFIG_IWL4965 */
3804 #ifdef CONFIG_IWL5000
3805 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
3806 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
3807 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
3808 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
3809 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
3810 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
3811 {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
3812 {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
3813 {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
3814 {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
3815 /* 5350 WiFi/WiMax */
3816 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
3817 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
3818 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
3819 /* 5150 Wifi/WiMax */
3820 {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
3821 {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
3822 /* 6000/6050 Series */
3823 {IWL_PCI_DEVICE(0x0082, 0x1102, iwl6000_2ag_cfg)},
3824 {IWL_PCI_DEVICE(0x0085, 0x1112, iwl6000_2ag_cfg)},
3825 {IWL_PCI_DEVICE(0x0082, 0x1122, iwl6000_2ag_cfg)},
3826 {IWL_PCI_DEVICE(0x422B, PCI_ANY_ID, iwl6000_3agn_cfg)},
3827 {IWL_PCI_DEVICE(0x4238, PCI_ANY_ID, iwl6000_3agn_cfg)},
3828 {IWL_PCI_DEVICE(0x0082, PCI_ANY_ID, iwl6000_2agn_cfg)},
3829 {IWL_PCI_DEVICE(0x0085, PCI_ANY_ID, iwl6000_3agn_cfg)},
3830 {IWL_PCI_DEVICE(0x0086, PCI_ANY_ID, iwl6050_3agn_cfg)},
3831 {IWL_PCI_DEVICE(0x0087, PCI_ANY_ID, iwl6050_2agn_cfg)},
3832 {IWL_PCI_DEVICE(0x0088, PCI_ANY_ID, iwl6050_3agn_cfg)},
3833 {IWL_PCI_DEVICE(0x0089, PCI_ANY_ID, iwl6050_2agn_cfg)},
3834 /* 100 Series WiFi */
3835 {IWL_PCI_DEVICE(0x0083, PCI_ANY_ID, iwl100_bgn_cfg)},
3836 {IWL_PCI_DEVICE(0x0084, PCI_ANY_ID, iwl100_bgn_cfg)},
3837 #endif /* CONFIG_IWL5000 */
3841 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
3843 static struct pci_driver iwl_driver = {
3845 .id_table = iwl_hw_card_ids,
3846 .probe = iwl_pci_probe,
3847 .remove = __devexit_p(iwl_pci_remove),
3849 .suspend = iwl_pci_suspend,
3850 .resume = iwl_pci_resume,
3854 static int __init iwl_init(void)
3858 printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
3859 printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
3861 ret = iwlagn_rate_control_register();
3863 printk(KERN_ERR DRV_NAME
3864 "Unable to register rate control algorithm: %d\n", ret);
3868 ret = pci_register_driver(&iwl_driver);
3870 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
3871 goto error_register;
3877 iwlagn_rate_control_unregister();
3881 static void __exit iwl_exit(void)
3883 pci_unregister_driver(&iwl_driver);
3884 iwlagn_rate_control_unregister();
3887 module_exit(iwl_exit);
3888 module_init(iwl_init);