1 /******************************************************************************
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/slab.h>
33 #include <linux/dma-mapping.h>
34 #include <linux/delay.h>
35 #include <linux/sched.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 #include "iwl-eeprom.h"
51 #include "iwl-helpers.h"
53 #include "iwl-agn-calib.h"
56 #include "iwl-trans.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 #define DRV_VERSION IWLWIFI_VERSION VD
78 MODULE_DESCRIPTION(DRV_DESCRIPTION);
79 MODULE_VERSION(DRV_VERSION);
80 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
81 MODULE_LICENSE("GPL");
83 static int iwlagn_ant_coupling;
84 static bool iwlagn_bt_ch_announce = 1;
86 void iwl_update_chain_flags(struct iwl_priv *priv)
88 struct iwl_rxon_context *ctx;
90 for_each_context(priv, ctx) {
91 iwlagn_set_rxon_chain(priv, ctx);
92 if (ctx->active.rx_chain != ctx->staging.rx_chain)
93 iwlagn_commit_rxon(priv, ctx);
97 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
98 static void iwl_set_beacon_tim(struct iwl_priv *priv,
99 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
100 u8 *beacon, u32 frame_size)
103 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
106 * The index is relative to frame start but we start looking at the
107 * variable-length part of the beacon.
109 tim_idx = mgmt->u.beacon.variable - beacon;
111 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
112 while ((tim_idx < (frame_size - 2)) &&
113 (beacon[tim_idx] != WLAN_EID_TIM))
114 tim_idx += beacon[tim_idx+1] + 2;
116 /* If TIM field was found, set variables */
117 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
118 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
119 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
121 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
124 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
126 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
127 struct iwl_host_cmd cmd = {
128 .id = REPLY_TX_BEACON,
131 struct ieee80211_tx_info *info;
137 * We have to set up the TX command, the TX Beacon command, and the
141 lockdep_assert_held(&priv->mutex);
143 if (!priv->beacon_ctx) {
144 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
148 if (WARN_ON(!priv->beacon_skb))
151 /* Allocate beacon command */
152 if (!priv->beacon_cmd)
153 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
154 tx_beacon_cmd = priv->beacon_cmd;
158 frame_size = priv->beacon_skb->len;
160 /* Set up TX command fields */
161 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
162 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
163 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
164 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
165 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
167 /* Set up TX beacon command fields */
168 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
171 /* Set up packet rate and flags */
172 info = IEEE80211_SKB_CB(priv->beacon_skb);
175 * Let's set up the rate at least somewhat correctly;
176 * it will currently not actually be used by the uCode,
177 * it uses the broadcast station's rate instead.
179 if (info->control.rates[0].idx < 0 ||
180 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
183 rate = info->control.rates[0].idx;
185 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
186 priv->hw_params.valid_tx_ant);
187 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
189 /* In mac80211, rates for 5 GHz start at 0 */
190 if (info->band == IEEE80211_BAND_5GHZ)
191 rate += IWL_FIRST_OFDM_RATE;
192 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
193 rate_flags |= RATE_MCS_CCK_MSK;
195 tx_beacon_cmd->tx.rate_n_flags =
196 iwl_hw_set_rate_n_flags(rate, rate_flags);
199 cmd.len[0] = sizeof(*tx_beacon_cmd);
200 cmd.data[0] = tx_beacon_cmd;
201 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
202 cmd.len[1] = frame_size;
203 cmd.data[1] = priv->beacon_skb->data;
204 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
206 return trans_send_cmd(&priv->trans, &cmd);
209 static void iwl_bg_beacon_update(struct work_struct *work)
211 struct iwl_priv *priv =
212 container_of(work, struct iwl_priv, beacon_update);
213 struct sk_buff *beacon;
215 mutex_lock(&priv->mutex);
216 if (!priv->beacon_ctx) {
217 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
221 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
223 * The ucode will send beacon notifications even in
224 * IBSS mode, but we don't want to process them. But
225 * we need to defer the type check to here due to
226 * requiring locking around the beacon_ctx access.
231 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
232 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
234 IWL_ERR(priv, "update beacon failed -- keeping old\n");
238 /* new beacon skb is allocated every time; dispose previous.*/
239 dev_kfree_skb(priv->beacon_skb);
241 priv->beacon_skb = beacon;
243 iwlagn_send_beacon_cmd(priv);
245 mutex_unlock(&priv->mutex);
248 static void iwl_bg_bt_runtime_config(struct work_struct *work)
250 struct iwl_priv *priv =
251 container_of(work, struct iwl_priv, bt_runtime_config);
253 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
256 /* dont send host command if rf-kill is on */
257 if (!iwl_is_ready_rf(priv))
259 iwlagn_send_advance_bt_config(priv);
262 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
264 struct iwl_priv *priv =
265 container_of(work, struct iwl_priv, bt_full_concurrency);
266 struct iwl_rxon_context *ctx;
268 mutex_lock(&priv->mutex);
270 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
273 /* dont send host command if rf-kill is on */
274 if (!iwl_is_ready_rf(priv))
277 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
278 priv->bt_full_concurrent ?
279 "full concurrency" : "3-wire");
282 * LQ & RXON updated cmds must be sent before BT Config cmd
283 * to avoid 3-wire collisions
285 for_each_context(priv, ctx) {
286 iwlagn_set_rxon_chain(priv, ctx);
287 iwlagn_commit_rxon(priv, ctx);
290 iwlagn_send_advance_bt_config(priv);
292 mutex_unlock(&priv->mutex);
296 * iwl_bg_statistics_periodic - Timer callback to queue statistics
298 * This callback is provided in order to send a statistics request.
300 * This timer function is continually reset to execute within
301 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
302 * was received. We need to ensure we receive the statistics in order
303 * to update the temperature used for calibrating the TXPOWER.
305 static void iwl_bg_statistics_periodic(unsigned long data)
307 struct iwl_priv *priv = (struct iwl_priv *)data;
309 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
312 /* dont send host command if rf-kill is on */
313 if (!iwl_is_ready_rf(priv))
316 iwl_send_statistics_request(priv, CMD_ASYNC, false);
320 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
321 u32 start_idx, u32 num_events,
325 u32 ptr; /* SRAM byte address of log data */
326 u32 ev, time, data; /* event log data */
327 unsigned long reg_flags;
330 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
332 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
334 /* Make sure device is powered up for SRAM reads */
335 spin_lock_irqsave(&priv->reg_lock, reg_flags);
336 if (iwl_grab_nic_access(priv)) {
337 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
341 /* Set starting address; reads will auto-increment */
342 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
346 * "time" is actually "data" for mode 0 (no timestamp).
347 * place event id # at far right for easier visual parsing.
349 for (i = 0; i < num_events; i++) {
350 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
351 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
353 trace_iwlwifi_dev_ucode_cont_event(priv,
356 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
357 trace_iwlwifi_dev_ucode_cont_event(priv,
361 /* Allow device to power down */
362 iwl_release_nic_access(priv);
363 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
366 static void iwl_continuous_event_trace(struct iwl_priv *priv)
368 u32 capacity; /* event log capacity in # entries */
369 u32 base; /* SRAM byte address of event log header */
370 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
371 u32 num_wraps; /* # times uCode wrapped to top of log */
372 u32 next_entry; /* index of next entry to be written by uCode */
374 base = priv->device_pointers.error_event_table;
375 if (iwlagn_hw_valid_rtc_data_addr(base)) {
376 capacity = iwl_read_targ_mem(priv, base);
377 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
378 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
379 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
383 if (num_wraps == priv->event_log.num_wraps) {
384 iwl_print_cont_event_trace(priv,
385 base, priv->event_log.next_entry,
386 next_entry - priv->event_log.next_entry,
388 priv->event_log.non_wraps_count++;
390 if ((num_wraps - priv->event_log.num_wraps) > 1)
391 priv->event_log.wraps_more_count++;
393 priv->event_log.wraps_once_count++;
394 trace_iwlwifi_dev_ucode_wrap_event(priv,
395 num_wraps - priv->event_log.num_wraps,
396 next_entry, priv->event_log.next_entry);
397 if (next_entry < priv->event_log.next_entry) {
398 iwl_print_cont_event_trace(priv, base,
399 priv->event_log.next_entry,
400 capacity - priv->event_log.next_entry,
403 iwl_print_cont_event_trace(priv, base, 0,
406 iwl_print_cont_event_trace(priv, base,
407 next_entry, capacity - next_entry,
410 iwl_print_cont_event_trace(priv, base, 0,
414 priv->event_log.num_wraps = num_wraps;
415 priv->event_log.next_entry = next_entry;
419 * iwl_bg_ucode_trace - Timer callback to log ucode event
421 * The timer is continually set to execute every
422 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
423 * this function is to perform continuous uCode event logging operation
426 static void iwl_bg_ucode_trace(unsigned long data)
428 struct iwl_priv *priv = (struct iwl_priv *)data;
430 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
433 if (priv->event_log.ucode_trace) {
434 iwl_continuous_event_trace(priv);
435 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
436 mod_timer(&priv->ucode_trace,
437 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
441 static void iwl_bg_tx_flush(struct work_struct *work)
443 struct iwl_priv *priv =
444 container_of(work, struct iwl_priv, tx_flush);
446 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
449 /* do nothing if rf-kill is on */
450 if (!iwl_is_ready_rf(priv))
453 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
454 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
457 /*****************************************************************************
461 *****************************************************************************/
463 #ifdef CONFIG_IWLWIFI_DEBUG
466 * The following adds a new attribute to the sysfs representation
467 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
468 * used for controlling the debug level.
470 * See the level definitions in iwl for details.
472 * The debug_level being managed using sysfs below is a per device debug
473 * level that is used instead of the global debug level if it (the per
474 * device debug level) is set.
476 static ssize_t show_debug_level(struct device *d,
477 struct device_attribute *attr, char *buf)
479 struct iwl_priv *priv = dev_get_drvdata(d);
480 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
482 static ssize_t store_debug_level(struct device *d,
483 struct device_attribute *attr,
484 const char *buf, size_t count)
486 struct iwl_priv *priv = dev_get_drvdata(d);
490 ret = strict_strtoul(buf, 0, &val);
492 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
494 priv->debug_level = val;
495 if (iwl_alloc_traffic_mem(priv))
497 "Not enough memory to generate traffic log\n");
499 return strnlen(buf, count);
502 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
503 show_debug_level, store_debug_level);
506 #endif /* CONFIG_IWLWIFI_DEBUG */
509 static ssize_t show_temperature(struct device *d,
510 struct device_attribute *attr, char *buf)
512 struct iwl_priv *priv = dev_get_drvdata(d);
514 if (!iwl_is_alive(priv))
517 return sprintf(buf, "%d\n", priv->temperature);
520 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
522 static ssize_t show_tx_power(struct device *d,
523 struct device_attribute *attr, char *buf)
525 struct iwl_priv *priv = dev_get_drvdata(d);
527 if (!iwl_is_ready_rf(priv))
528 return sprintf(buf, "off\n");
530 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
533 static ssize_t store_tx_power(struct device *d,
534 struct device_attribute *attr,
535 const char *buf, size_t count)
537 struct iwl_priv *priv = dev_get_drvdata(d);
541 ret = strict_strtoul(buf, 10, &val);
543 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
545 ret = iwl_set_tx_power(priv, val, false);
547 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
555 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
557 static struct attribute *iwl_sysfs_entries[] = {
558 &dev_attr_temperature.attr,
559 &dev_attr_tx_power.attr,
560 #ifdef CONFIG_IWLWIFI_DEBUG
561 &dev_attr_debug_level.attr,
566 static struct attribute_group iwl_attribute_group = {
567 .name = NULL, /* put in device directory */
568 .attrs = iwl_sysfs_entries,
571 /******************************************************************************
573 * uCode download functions
575 ******************************************************************************/
577 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
580 dma_free_coherent(priv->bus->dev, desc->len,
581 desc->v_addr, desc->p_addr);
586 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
588 iwl_free_fw_desc(priv, &img->code);
589 iwl_free_fw_desc(priv, &img->data);
592 static void iwl_dealloc_ucode(struct iwl_priv *priv)
594 iwl_free_fw_img(priv, &priv->ucode_rt);
595 iwl_free_fw_img(priv, &priv->ucode_init);
596 iwl_free_fw_img(priv, &priv->ucode_wowlan);
599 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
600 const void *data, size_t len)
607 desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
608 &desc->p_addr, GFP_KERNEL);
613 memcpy(desc->v_addr, data, len);
617 struct iwlagn_ucode_capabilities {
618 u32 max_probe_length;
619 u32 standard_phy_calibration_size;
623 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
624 static int iwl_mac_setup_register(struct iwl_priv *priv,
625 struct iwlagn_ucode_capabilities *capa);
627 #define UCODE_EXPERIMENTAL_INDEX 100
628 #define UCODE_EXPERIMENTAL_TAG "exp"
630 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
632 const char *name_pre = priv->cfg->fw_name_pre;
636 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
637 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
638 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
639 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
641 priv->fw_index = priv->cfg->ucode_api_max;
642 sprintf(tag, "%d", priv->fw_index);
645 sprintf(tag, "%d", priv->fw_index);
648 if (priv->fw_index < priv->cfg->ucode_api_min) {
649 IWL_ERR(priv, "no suitable firmware found!\n");
653 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
655 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
656 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
657 ? "EXPERIMENTAL " : "",
658 priv->firmware_name);
660 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
662 GFP_KERNEL, priv, iwl_ucode_callback);
665 struct iwlagn_firmware_pieces {
666 const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
667 size_t inst_size, data_size, init_size, init_data_size,
668 wowlan_inst_size, wowlan_data_size;
672 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
673 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
676 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
677 const struct firmware *ucode_raw,
678 struct iwlagn_firmware_pieces *pieces)
680 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
681 u32 api_ver, hdr_size;
684 priv->ucode_ver = le32_to_cpu(ucode->ver);
685 api_ver = IWL_UCODE_API(priv->ucode_ver);
690 if (ucode_raw->size < hdr_size) {
691 IWL_ERR(priv, "File size too small!\n");
694 pieces->build = le32_to_cpu(ucode->u.v2.build);
695 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
696 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
697 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
698 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
699 src = ucode->u.v2.data;
705 if (ucode_raw->size < hdr_size) {
706 IWL_ERR(priv, "File size too small!\n");
710 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
711 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
712 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
713 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
714 src = ucode->u.v1.data;
718 /* Verify size of file vs. image size info in file's header */
719 if (ucode_raw->size != hdr_size + pieces->inst_size +
720 pieces->data_size + pieces->init_size +
721 pieces->init_data_size) {
724 "uCode file size %d does not match expected size\n",
725 (int)ucode_raw->size);
730 src += pieces->inst_size;
732 src += pieces->data_size;
734 src += pieces->init_size;
735 pieces->init_data = src;
736 src += pieces->init_data_size;
741 static int iwlagn_wanted_ucode_alternative = 1;
743 static int iwlagn_load_firmware(struct iwl_priv *priv,
744 const struct firmware *ucode_raw,
745 struct iwlagn_firmware_pieces *pieces,
746 struct iwlagn_ucode_capabilities *capa)
748 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
749 struct iwl_ucode_tlv *tlv;
750 size_t len = ucode_raw->size;
752 int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
755 enum iwl_ucode_tlv_type tlv_type;
758 if (len < sizeof(*ucode)) {
759 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
763 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
764 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
765 le32_to_cpu(ucode->magic));
770 * Check which alternatives are present, and "downgrade"
771 * when the chosen alternative is not present, warning
772 * the user when that happens. Some files may not have
773 * any alternatives, so don't warn in that case.
775 alternatives = le64_to_cpu(ucode->alternatives);
776 tmp = wanted_alternative;
777 if (wanted_alternative > 63)
778 wanted_alternative = 63;
779 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
780 wanted_alternative--;
781 if (wanted_alternative && wanted_alternative != tmp)
783 "uCode alternative %d not available, choosing %d\n",
784 tmp, wanted_alternative);
786 priv->ucode_ver = le32_to_cpu(ucode->ver);
787 pieces->build = le32_to_cpu(ucode->build);
790 len -= sizeof(*ucode);
792 while (len >= sizeof(*tlv)) {
798 tlv_len = le32_to_cpu(tlv->length);
799 tlv_type = le16_to_cpu(tlv->type);
800 tlv_alt = le16_to_cpu(tlv->alternative);
801 tlv_data = tlv->data;
804 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
808 len -= ALIGN(tlv_len, 4);
809 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
812 * Alternative 0 is always valid.
814 * Skip alternative TLVs that are not selected.
816 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
820 case IWL_UCODE_TLV_INST:
821 pieces->inst = tlv_data;
822 pieces->inst_size = tlv_len;
824 case IWL_UCODE_TLV_DATA:
825 pieces->data = tlv_data;
826 pieces->data_size = tlv_len;
828 case IWL_UCODE_TLV_INIT:
829 pieces->init = tlv_data;
830 pieces->init_size = tlv_len;
832 case IWL_UCODE_TLV_INIT_DATA:
833 pieces->init_data = tlv_data;
834 pieces->init_data_size = tlv_len;
836 case IWL_UCODE_TLV_BOOT:
837 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
839 case IWL_UCODE_TLV_PROBE_MAX_LEN:
840 if (tlv_len != sizeof(u32))
841 goto invalid_tlv_len;
842 capa->max_probe_length =
843 le32_to_cpup((__le32 *)tlv_data);
845 case IWL_UCODE_TLV_PAN:
847 goto invalid_tlv_len;
848 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
850 case IWL_UCODE_TLV_FLAGS:
851 /* must be at least one u32 */
852 if (tlv_len < sizeof(u32))
853 goto invalid_tlv_len;
854 /* and a proper number of u32s */
855 if (tlv_len % sizeof(u32))
856 goto invalid_tlv_len;
858 * This driver only reads the first u32 as
859 * right now no more features are defined,
860 * if that changes then either the driver
861 * will not work with the new firmware, or
862 * it'll not take advantage of new features.
864 capa->flags = le32_to_cpup((__le32 *)tlv_data);
866 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
867 if (tlv_len != sizeof(u32))
868 goto invalid_tlv_len;
869 pieces->init_evtlog_ptr =
870 le32_to_cpup((__le32 *)tlv_data);
872 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
873 if (tlv_len != sizeof(u32))
874 goto invalid_tlv_len;
875 pieces->init_evtlog_size =
876 le32_to_cpup((__le32 *)tlv_data);
878 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
879 if (tlv_len != sizeof(u32))
880 goto invalid_tlv_len;
881 pieces->init_errlog_ptr =
882 le32_to_cpup((__le32 *)tlv_data);
884 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
885 if (tlv_len != sizeof(u32))
886 goto invalid_tlv_len;
887 pieces->inst_evtlog_ptr =
888 le32_to_cpup((__le32 *)tlv_data);
890 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
891 if (tlv_len != sizeof(u32))
892 goto invalid_tlv_len;
893 pieces->inst_evtlog_size =
894 le32_to_cpup((__le32 *)tlv_data);
896 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
897 if (tlv_len != sizeof(u32))
898 goto invalid_tlv_len;
899 pieces->inst_errlog_ptr =
900 le32_to_cpup((__le32 *)tlv_data);
902 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
904 goto invalid_tlv_len;
905 priv->enhance_sensitivity_table = true;
907 case IWL_UCODE_TLV_WOWLAN_INST:
908 pieces->wowlan_inst = tlv_data;
909 pieces->wowlan_inst_size = tlv_len;
911 case IWL_UCODE_TLV_WOWLAN_DATA:
912 pieces->wowlan_data = tlv_data;
913 pieces->wowlan_data_size = tlv_len;
915 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
916 if (tlv_len != sizeof(u32))
917 goto invalid_tlv_len;
918 capa->standard_phy_calibration_size =
919 le32_to_cpup((__le32 *)tlv_data);
922 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
928 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
929 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
936 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
937 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
943 * iwl_ucode_callback - callback when firmware was loaded
945 * If loaded successfully, copies the firmware into buffers
946 * for the card to fetch (via DMA).
948 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
950 struct iwl_priv *priv = context;
951 struct iwl_ucode_header *ucode;
953 struct iwlagn_firmware_pieces pieces;
954 const unsigned int api_max = priv->cfg->ucode_api_max;
955 const unsigned int api_min = priv->cfg->ucode_api_min;
959 struct iwlagn_ucode_capabilities ucode_capa = {
960 .max_probe_length = 200,
961 .standard_phy_calibration_size =
962 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
965 memset(&pieces, 0, sizeof(pieces));
968 if (priv->fw_index <= priv->cfg->ucode_api_max)
970 "request for firmware file '%s' failed.\n",
971 priv->firmware_name);
975 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
976 priv->firmware_name, ucode_raw->size);
978 /* Make sure that we got at least the API version number */
979 if (ucode_raw->size < 4) {
980 IWL_ERR(priv, "File size way too small!\n");
984 /* Data from ucode file: header followed by uCode images */
985 ucode = (struct iwl_ucode_header *)ucode_raw->data;
988 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
990 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
996 api_ver = IWL_UCODE_API(priv->ucode_ver);
997 build = pieces.build;
1000 * api_ver should match the api version forming part of the
1001 * firmware filename ... but we don't check for that and only rely
1002 * on the API version read from firmware header from here on forward
1004 /* no api version check required for experimental uCode */
1005 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1006 if (api_ver < api_min || api_ver > api_max) {
1008 "Driver unable to support your firmware API. "
1009 "Driver supports v%u, firmware is v%u.\n",
1014 if (api_ver != api_max)
1016 "Firmware has old API version. Expected v%u, "
1017 "got v%u. New firmware can be obtained "
1018 "from http://www.intellinuxwireless.org.\n",
1023 sprintf(buildstr, " build %u%s", build,
1024 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1029 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1030 IWL_UCODE_MAJOR(priv->ucode_ver),
1031 IWL_UCODE_MINOR(priv->ucode_ver),
1032 IWL_UCODE_API(priv->ucode_ver),
1033 IWL_UCODE_SERIAL(priv->ucode_ver),
1036 snprintf(priv->hw->wiphy->fw_version,
1037 sizeof(priv->hw->wiphy->fw_version),
1039 IWL_UCODE_MAJOR(priv->ucode_ver),
1040 IWL_UCODE_MINOR(priv->ucode_ver),
1041 IWL_UCODE_API(priv->ucode_ver),
1042 IWL_UCODE_SERIAL(priv->ucode_ver),
1046 * For any of the failures below (before allocating pci memory)
1047 * we will try to load a version with a smaller API -- maybe the
1048 * user just got a corrupted version of the latest API.
1051 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1053 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1055 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1057 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1059 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1060 pieces.init_data_size);
1062 /* Verify that uCode images will fit in card's SRAM */
1063 if (pieces.inst_size > priv->hw_params.max_inst_size) {
1064 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1069 if (pieces.data_size > priv->hw_params.max_data_size) {
1070 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1075 if (pieces.init_size > priv->hw_params.max_inst_size) {
1076 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1081 if (pieces.init_data_size > priv->hw_params.max_data_size) {
1082 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1083 pieces.init_data_size);
1087 /* Allocate ucode buffers for card's bus-master loading ... */
1089 /* Runtime instructions and 2 copies of data:
1090 * 1) unmodified from disk
1091 * 2) backup cache for save/restore during power-downs */
1092 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1093 pieces.inst, pieces.inst_size))
1095 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1096 pieces.data, pieces.data_size))
1099 /* Initialization instructions and data */
1100 if (pieces.init_size && pieces.init_data_size) {
1101 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1102 pieces.init, pieces.init_size))
1104 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1105 pieces.init_data, pieces.init_data_size))
1109 /* WoWLAN instructions and data */
1110 if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1111 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1113 pieces.wowlan_inst_size))
1115 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1117 pieces.wowlan_data_size))
1121 /* Now that we can no longer fail, copy information */
1124 * The (size - 16) / 12 formula is based on the information recorded
1125 * for each event, which is of mode 1 (including timestamp) for all
1126 * new microcodes that include this information.
1128 priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1129 if (pieces.init_evtlog_size)
1130 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1132 priv->init_evtlog_size =
1133 priv->cfg->base_params->max_event_log_size;
1134 priv->init_errlog_ptr = pieces.init_errlog_ptr;
1135 priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1136 if (pieces.inst_evtlog_size)
1137 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1139 priv->inst_evtlog_size =
1140 priv->cfg->base_params->max_event_log_size;
1141 priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1143 priv->new_scan_threshold_behaviour =
1144 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1146 if ((priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE) &&
1147 (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN)) {
1148 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
1149 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1151 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1153 if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
1154 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1156 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1159 * figure out the offset of chain noise reset and gain commands
1160 * base on the size of standard phy calibration commands table size
1162 if (ucode_capa.standard_phy_calibration_size >
1163 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1164 ucode_capa.standard_phy_calibration_size =
1165 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1167 priv->phy_calib_chain_noise_reset_cmd =
1168 ucode_capa.standard_phy_calibration_size;
1169 priv->phy_calib_chain_noise_gain_cmd =
1170 ucode_capa.standard_phy_calibration_size + 1;
1172 /**************************************************
1173 * This is still part of probe() in a sense...
1175 * 9. Setup and register with mac80211 and debugfs
1176 **************************************************/
1177 err = iwl_mac_setup_register(priv, &ucode_capa);
1181 err = iwl_dbgfs_register(priv, DRV_NAME);
1183 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1185 err = sysfs_create_group(&(priv->bus->dev->kobj),
1186 &iwl_attribute_group);
1188 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1192 /* We have our copies now, allow OS release its copies */
1193 release_firmware(ucode_raw);
1194 complete(&priv->firmware_loading_complete);
1198 /* try next, if any */
1199 if (iwl_request_firmware(priv, false))
1201 release_firmware(ucode_raw);
1205 IWL_ERR(priv, "failed to allocate pci memory\n");
1206 iwl_dealloc_ucode(priv);
1208 complete(&priv->firmware_loading_complete);
1209 device_release_driver(priv->bus->dev);
1210 release_firmware(ucode_raw);
1213 static const char * const desc_lookup_text[] = {
1218 "NMI_INTERRUPT_WDG",
1222 "HW_ERROR_TUNE_LOCK",
1223 "HW_ERROR_TEMPERATURE",
1224 "ILLEGAL_CHAN_FREQ",
1227 "NMI_INTERRUPT_HOST",
1228 "NMI_INTERRUPT_ACTION_PT",
1229 "NMI_INTERRUPT_UNKNOWN",
1230 "UCODE_VERSION_MISMATCH",
1231 "HW_ERROR_ABS_LOCK",
1232 "HW_ERROR_CAL_LOCK_FAIL",
1233 "NMI_INTERRUPT_INST_ACTION_PT",
1234 "NMI_INTERRUPT_DATA_ACTION_PT",
1236 "NMI_INTERRUPT_TRM",
1237 "NMI_INTERRUPT_BREAK_POINT",
1244 static struct { char *name; u8 num; } advanced_lookup[] = {
1245 { "NMI_INTERRUPT_WDG", 0x34 },
1246 { "SYSASSERT", 0x35 },
1247 { "UCODE_VERSION_MISMATCH", 0x37 },
1248 { "BAD_COMMAND", 0x38 },
1249 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1250 { "FATAL_ERROR", 0x3D },
1251 { "NMI_TRM_HW_ERR", 0x46 },
1252 { "NMI_INTERRUPT_TRM", 0x4C },
1253 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1254 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1255 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1256 { "NMI_INTERRUPT_HOST", 0x66 },
1257 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1258 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1259 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1260 { "ADVANCED_SYSASSERT", 0 },
1263 static const char *desc_lookup(u32 num)
1266 int max = ARRAY_SIZE(desc_lookup_text);
1269 return desc_lookup_text[num];
1271 max = ARRAY_SIZE(advanced_lookup) - 1;
1272 for (i = 0; i < max; i++) {
1273 if (advanced_lookup[i].num == num)
1276 return advanced_lookup[i].name;
1279 #define ERROR_START_OFFSET (1 * sizeof(u32))
1280 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1282 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1285 struct iwl_error_event_table table;
1287 base = priv->device_pointers.error_event_table;
1288 if (priv->ucode_type == IWL_UCODE_INIT) {
1290 base = priv->init_errlog_ptr;
1293 base = priv->inst_errlog_ptr;
1296 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1298 "Not valid error log pointer 0x%08X for %s uCode\n",
1300 (priv->ucode_type == IWL_UCODE_INIT)
1305 iwl_read_targ_mem_words(priv, base, &table, sizeof(table));
1307 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1308 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1309 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1310 priv->status, table.valid);
1313 priv->isr_stats.err_code = table.error_id;
1315 trace_iwlwifi_dev_ucode_error(priv, table.error_id, table.tsf_low,
1316 table.data1, table.data2, table.line,
1317 table.blink1, table.blink2, table.ilink1,
1318 table.ilink2, table.bcon_time, table.gp1,
1319 table.gp2, table.gp3, table.ucode_ver,
1320 table.hw_ver, table.brd_ver);
1321 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1322 desc_lookup(table.error_id));
1323 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1324 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1325 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1326 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1327 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1328 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1329 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1330 IWL_ERR(priv, "0x%08X | line\n", table.line);
1331 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1332 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1333 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1334 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1335 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1336 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1337 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1338 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1339 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1340 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1343 #define EVENT_START_OFFSET (4 * sizeof(u32))
1346 * iwl_print_event_log - Dump error event log to syslog
1349 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1350 u32 num_events, u32 mode,
1351 int pos, char **buf, size_t bufsz)
1354 u32 base; /* SRAM byte address of event log header */
1355 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1356 u32 ptr; /* SRAM byte address of log data */
1357 u32 ev, time, data; /* event log data */
1358 unsigned long reg_flags;
1360 if (num_events == 0)
1363 base = priv->device_pointers.log_event_table;
1364 if (priv->ucode_type == IWL_UCODE_INIT) {
1366 base = priv->init_evtlog_ptr;
1369 base = priv->inst_evtlog_ptr;
1373 event_size = 2 * sizeof(u32);
1375 event_size = 3 * sizeof(u32);
1377 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1379 /* Make sure device is powered up for SRAM reads */
1380 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1381 iwl_grab_nic_access(priv);
1383 /* Set starting address; reads will auto-increment */
1384 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
1387 /* "time" is actually "data" for mode 0 (no timestamp).
1388 * place event id # at far right for easier visual parsing. */
1389 for (i = 0; i < num_events; i++) {
1390 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1391 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1395 pos += scnprintf(*buf + pos, bufsz - pos,
1396 "EVT_LOG:0x%08x:%04u\n",
1399 trace_iwlwifi_dev_ucode_event(priv, 0,
1401 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1405 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1407 pos += scnprintf(*buf + pos, bufsz - pos,
1408 "EVT_LOGT:%010u:0x%08x:%04u\n",
1411 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1413 trace_iwlwifi_dev_ucode_event(priv, time,
1419 /* Allow device to power down */
1420 iwl_release_nic_access(priv);
1421 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1426 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1428 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1429 u32 num_wraps, u32 next_entry,
1431 int pos, char **buf, size_t bufsz)
1434 * display the newest DEFAULT_LOG_ENTRIES entries
1435 * i.e the entries just before the next ont that uCode would fill.
1438 if (next_entry < size) {
1439 pos = iwl_print_event_log(priv,
1440 capacity - (size - next_entry),
1441 size - next_entry, mode,
1443 pos = iwl_print_event_log(priv, 0,
1447 pos = iwl_print_event_log(priv, next_entry - size,
1448 size, mode, pos, buf, bufsz);
1450 if (next_entry < size) {
1451 pos = iwl_print_event_log(priv, 0, next_entry,
1452 mode, pos, buf, bufsz);
1454 pos = iwl_print_event_log(priv, next_entry - size,
1455 size, mode, pos, buf, bufsz);
1461 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1463 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1464 char **buf, bool display)
1466 u32 base; /* SRAM byte address of event log header */
1467 u32 capacity; /* event log capacity in # entries */
1468 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1469 u32 num_wraps; /* # times uCode wrapped to top of log */
1470 u32 next_entry; /* index of next entry to be written by uCode */
1471 u32 size; /* # entries that we'll print */
1476 base = priv->device_pointers.log_event_table;
1477 if (priv->ucode_type == IWL_UCODE_INIT) {
1478 logsize = priv->init_evtlog_size;
1480 base = priv->init_evtlog_ptr;
1482 logsize = priv->inst_evtlog_size;
1484 base = priv->inst_evtlog_ptr;
1487 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1489 "Invalid event log pointer 0x%08X for %s uCode\n",
1491 (priv->ucode_type == IWL_UCODE_INIT)
1496 /* event log header */
1497 capacity = iwl_read_targ_mem(priv, base);
1498 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1499 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1500 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1502 if (capacity > logsize) {
1503 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1508 if (next_entry > logsize) {
1509 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1510 next_entry, logsize);
1511 next_entry = logsize;
1514 size = num_wraps ? capacity : next_entry;
1516 /* bail out if nothing in log */
1518 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1522 /* enable/disable bt channel inhibition */
1523 priv->bt_ch_announce = iwlagn_bt_ch_announce;
1525 #ifdef CONFIG_IWLWIFI_DEBUG
1526 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1527 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1528 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1530 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1531 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1533 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1536 #ifdef CONFIG_IWLWIFI_DEBUG
1539 bufsz = capacity * 48;
1542 *buf = kmalloc(bufsz, GFP_KERNEL);
1546 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1548 * if uCode has wrapped back to top of log,
1549 * start at the oldest entry,
1550 * i.e the next one that uCode would fill.
1553 pos = iwl_print_event_log(priv, next_entry,
1554 capacity - next_entry, mode,
1556 /* (then/else) start at top of log */
1557 pos = iwl_print_event_log(priv, 0,
1558 next_entry, mode, pos, buf, bufsz);
1560 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1561 next_entry, size, mode,
1564 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1565 next_entry, size, mode,
1571 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1573 struct iwl_ct_kill_config cmd;
1574 struct iwl_ct_kill_throttling_config adv_cmd;
1575 unsigned long flags;
1578 spin_lock_irqsave(&priv->lock, flags);
1579 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1580 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1581 spin_unlock_irqrestore(&priv->lock, flags);
1582 priv->thermal_throttle.ct_kill_toggle = false;
1584 if (priv->cfg->base_params->support_ct_kill_exit) {
1585 adv_cmd.critical_temperature_enter =
1586 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1587 adv_cmd.critical_temperature_exit =
1588 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
1590 ret = trans_send_cmd_pdu(&priv->trans,
1591 REPLY_CT_KILL_CONFIG_CMD,
1592 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1594 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1596 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1598 "critical temperature enter is %d,"
1600 priv->hw_params.ct_kill_threshold,
1601 priv->hw_params.ct_kill_exit_threshold);
1603 cmd.critical_temperature_R =
1604 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1606 ret = trans_send_cmd_pdu(&priv->trans,
1607 REPLY_CT_KILL_CONFIG_CMD,
1608 CMD_SYNC, sizeof(cmd), &cmd);
1610 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1612 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1614 "critical temperature is %d\n",
1615 priv->hw_params.ct_kill_threshold);
1619 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1621 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1622 struct iwl_host_cmd cmd = {
1623 .id = CALIBRATION_CFG_CMD,
1624 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1625 .data = { &calib_cfg_cmd, },
1628 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1629 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1630 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1632 return trans_send_cmd(&priv->trans, &cmd);
1636 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1638 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1639 .valid = cpu_to_le32(valid_tx_ant),
1642 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1643 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1644 return trans_send_cmd_pdu(&priv->trans,
1645 TX_ANT_CONFIGURATION_CMD,
1647 sizeof(struct iwl_tx_ant_config_cmd),
1650 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1656 * iwl_alive_start - called after REPLY_ALIVE notification received
1657 * from protocol/runtime uCode (initialization uCode's
1658 * Alive gets handled by iwl_init_alive_start()).
1660 int iwl_alive_start(struct iwl_priv *priv)
1663 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1665 /*TODO: this should go to the transport layer */
1666 iwl_reset_ict(priv);
1668 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1670 /* After the ALIVE response, we can send host commands to the uCode */
1671 set_bit(STATUS_ALIVE, &priv->status);
1673 /* Enable watchdog to monitor the driver tx queues */
1674 iwl_setup_watchdog(priv);
1676 if (iwl_is_rfkill(priv))
1679 /* download priority table before any calibration request */
1680 if (priv->cfg->bt_params &&
1681 priv->cfg->bt_params->advanced_bt_coexist) {
1682 /* Configure Bluetooth device coexistence support */
1683 if (priv->cfg->bt_params->bt_sco_disable)
1684 priv->bt_enable_pspoll = false;
1686 priv->bt_enable_pspoll = true;
1688 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1689 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1690 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1691 iwlagn_send_advance_bt_config(priv);
1692 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1693 priv->cur_rssi_ctx = NULL;
1695 iwlagn_send_prio_tbl(priv);
1697 /* FIXME: w/a to force change uCode BT state machine */
1698 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1699 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1702 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1703 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1708 * default is 2-wire BT coexexistence support
1710 iwl_send_bt_config(priv);
1713 if (priv->hw_params.calib_rt_cfg)
1714 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
1716 ieee80211_wake_queues(priv->hw);
1718 priv->active_rate = IWL_RATES_MASK;
1720 /* Configure Tx antenna selection based on H/W config */
1721 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1723 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
1724 struct iwl_rxon_cmd *active_rxon =
1725 (struct iwl_rxon_cmd *)&ctx->active;
1726 /* apply any changes in staging */
1727 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1728 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1730 struct iwl_rxon_context *tmp;
1731 /* Initialize our rx_config data */
1732 for_each_context(priv, tmp)
1733 iwl_connection_init_rx_config(priv, tmp);
1735 iwlagn_set_rxon_chain(priv, ctx);
1738 if (!priv->wowlan) {
1739 /* WoWLAN ucode will not reply in the same way, skip it */
1740 iwl_reset_run_time_calib(priv);
1743 set_bit(STATUS_READY, &priv->status);
1745 /* Configure the adapter for unassociated operation */
1746 ret = iwlagn_commit_rxon(priv, ctx);
1750 /* At this point, the NIC is initialized and operational */
1751 iwl_rf_kill_ct_config(priv);
1753 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1755 return iwl_power_update_mode(priv, true);
1758 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1760 static void __iwl_down(struct iwl_priv *priv)
1764 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1766 iwl_scan_cancel_timeout(priv, 200);
1768 exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
1770 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1771 * to prevent rearm timer */
1772 del_timer_sync(&priv->watchdog);
1774 iwl_clear_ucode_stations(priv, NULL);
1775 iwl_dealloc_bcast_stations(priv);
1776 iwl_clear_driver_stations(priv);
1778 /* reset BT coex data */
1779 priv->bt_status = 0;
1780 priv->cur_rssi_ctx = NULL;
1781 priv->bt_is_sco = 0;
1782 if (priv->cfg->bt_params)
1783 priv->bt_traffic_load =
1784 priv->cfg->bt_params->bt_init_traffic_load;
1786 priv->bt_traffic_load = 0;
1787 priv->bt_full_concurrent = false;
1788 priv->bt_ci_compliance = 0;
1790 /* Wipe out the EXIT_PENDING status bit if we are not actually
1791 * exiting the module */
1793 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1795 if (priv->mac80211_registered)
1796 ieee80211_stop_queues(priv->hw);
1798 /* Clear out all status bits but a few that are stable across reset */
1799 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1801 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1802 STATUS_GEO_CONFIGURED |
1803 test_bit(STATUS_FW_ERROR, &priv->status) <<
1805 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1806 STATUS_EXIT_PENDING;
1808 trans_stop_device(&priv->trans);
1810 dev_kfree_skb(priv->beacon_skb);
1811 priv->beacon_skb = NULL;
1814 static void iwl_down(struct iwl_priv *priv)
1816 mutex_lock(&priv->mutex);
1818 mutex_unlock(&priv->mutex);
1820 iwl_cancel_deferred_work(priv);
1823 #define MAX_HW_RESTARTS 5
1825 static int __iwl_up(struct iwl_priv *priv)
1827 struct iwl_rxon_context *ctx;
1830 lockdep_assert_held(&priv->mutex);
1832 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1833 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1837 for_each_context(priv, ctx) {
1838 ret = iwlagn_alloc_bcast_station(priv, ctx);
1840 iwl_dealloc_bcast_stations(priv);
1845 ret = iwlagn_run_init_ucode(priv);
1847 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1851 ret = iwlagn_load_ucode_wait_alive(priv,
1855 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1859 ret = iwl_alive_start(priv);
1865 set_bit(STATUS_EXIT_PENDING, &priv->status);
1867 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1869 IWL_ERR(priv, "Unable to initialize device.\n");
1874 /*****************************************************************************
1876 * Workqueue callbacks
1878 *****************************************************************************/
1880 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1882 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1883 run_time_calib_work);
1885 mutex_lock(&priv->mutex);
1887 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1888 test_bit(STATUS_SCANNING, &priv->status)) {
1889 mutex_unlock(&priv->mutex);
1893 if (priv->start_calib) {
1894 iwl_chain_noise_calibration(priv);
1895 iwl_sensitivity_calibration(priv);
1898 mutex_unlock(&priv->mutex);
1901 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1903 struct iwl_rxon_context *ctx;
1904 bool bt_full_concurrent;
1905 u8 bt_ci_compliance;
1910 lockdep_assert_held(&priv->mutex);
1912 for_each_context(priv, ctx)
1917 * __iwl_down() will clear the BT status variables,
1918 * which is correct, but when we restart we really
1919 * want to keep them so restore them afterwards.
1921 * The restart process will later pick them up and
1922 * re-configure the hw when we reconfigure the BT
1925 bt_full_concurrent = priv->bt_full_concurrent;
1926 bt_ci_compliance = priv->bt_ci_compliance;
1927 bt_load = priv->bt_traffic_load;
1928 bt_status = priv->bt_status;
1929 bt_is_sco = priv->bt_is_sco;
1933 priv->bt_full_concurrent = bt_full_concurrent;
1934 priv->bt_ci_compliance = bt_ci_compliance;
1935 priv->bt_traffic_load = bt_load;
1936 priv->bt_status = bt_status;
1937 priv->bt_is_sco = bt_is_sco;
1940 static void iwl_bg_restart(struct work_struct *data)
1942 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1944 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1947 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1948 mutex_lock(&priv->mutex);
1949 iwlagn_prepare_restart(priv);
1950 mutex_unlock(&priv->mutex);
1951 iwl_cancel_deferred_work(priv);
1952 ieee80211_restart_hw(priv->hw);
1958 static int iwl_mac_offchannel_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
1959 struct ieee80211_channel *chan,
1960 enum nl80211_channel_type channel_type,
1963 struct iwl_priv *priv = hw->priv;
1966 /* Not supported if we don't have PAN */
1967 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN))) {
1972 /* Not supported on pre-P2P firmware */
1973 if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
1974 BIT(NL80211_IFTYPE_P2P_CLIENT))) {
1979 mutex_lock(&priv->mutex);
1981 if (!priv->contexts[IWL_RXON_CTX_PAN].is_active) {
1983 * If the PAN context is free, use the normal
1984 * way of doing remain-on-channel offload + TX.
1990 /* TODO: queue up if scanning? */
1991 if (test_bit(STATUS_SCANNING, &priv->status) ||
1992 priv->offchan_tx_skb) {
1998 * max_scan_ie_len doesn't include the blank SSID or the header,
1999 * so need to add that again here.
2001 if (skb->len > hw->wiphy->max_scan_ie_len + 24 + 2) {
2006 priv->offchan_tx_skb = skb;
2007 priv->offchan_tx_timeout = wait;
2008 priv->offchan_tx_chan = chan;
2010 ret = iwl_scan_initiate(priv, priv->contexts[IWL_RXON_CTX_PAN].vif,
2011 IWL_SCAN_OFFCH_TX, chan->band);
2013 priv->offchan_tx_skb = NULL;
2015 mutex_unlock(&priv->mutex);
2023 static int iwl_mac_offchannel_tx_cancel_wait(struct ieee80211_hw *hw)
2025 struct iwl_priv *priv = hw->priv;
2028 mutex_lock(&priv->mutex);
2030 if (!priv->offchan_tx_skb) {
2035 priv->offchan_tx_skb = NULL;
2037 ret = iwl_scan_cancel_timeout(priv, 200);
2041 mutex_unlock(&priv->mutex);
2046 /*****************************************************************************
2048 * mac80211 entry point functions
2050 *****************************************************************************/
2052 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
2055 .types = BIT(NL80211_IFTYPE_STATION),
2059 .types = BIT(NL80211_IFTYPE_AP),
2063 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
2066 .types = BIT(NL80211_IFTYPE_STATION),
2070 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
2073 .types = BIT(NL80211_IFTYPE_STATION),
2077 .types = BIT(NL80211_IFTYPE_P2P_GO) |
2078 BIT(NL80211_IFTYPE_AP),
2082 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
2085 .types = BIT(NL80211_IFTYPE_STATION),
2089 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
2093 static const struct ieee80211_iface_combination
2094 iwlagn_iface_combinations_dualmode[] = {
2095 { .num_different_channels = 1,
2096 .max_interfaces = 2,
2097 .beacon_int_infra_match = true,
2098 .limits = iwlagn_sta_ap_limits,
2099 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
2101 { .num_different_channels = 1,
2102 .max_interfaces = 2,
2103 .limits = iwlagn_2sta_limits,
2104 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
2108 static const struct ieee80211_iface_combination
2109 iwlagn_iface_combinations_p2p[] = {
2110 { .num_different_channels = 1,
2111 .max_interfaces = 2,
2112 .beacon_int_infra_match = true,
2113 .limits = iwlagn_p2p_sta_go_limits,
2114 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
2116 { .num_different_channels = 1,
2117 .max_interfaces = 2,
2118 .limits = iwlagn_p2p_2sta_limits,
2119 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
2124 * Not a mac80211 entry point function, but it fits in with all the
2125 * other mac80211 functions grouped here.
2127 static int iwl_mac_setup_register(struct iwl_priv *priv,
2128 struct iwlagn_ucode_capabilities *capa)
2131 struct ieee80211_hw *hw = priv->hw;
2132 struct iwl_rxon_context *ctx;
2134 hw->rate_control_algorithm = "iwl-agn-rs";
2136 /* Tell mac80211 our characteristics */
2137 hw->flags = IEEE80211_HW_SIGNAL_DBM |
2138 IEEE80211_HW_AMPDU_AGGREGATION |
2139 IEEE80211_HW_NEED_DTIM_PERIOD |
2140 IEEE80211_HW_SPECTRUM_MGMT |
2141 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
2144 * Including the following line will crash some AP's. This
2145 * workaround removes the stimulus which causes the crash until
2146 * the AP software can be fixed.
2147 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2150 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2151 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2153 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
2154 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2155 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2157 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2158 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2160 hw->sta_data_size = sizeof(struct iwl_station_priv);
2161 hw->vif_data_size = sizeof(struct iwl_vif_priv);
2163 for_each_context(priv, ctx) {
2164 hw->wiphy->interface_modes |= ctx->interface_modes;
2165 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2168 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
2170 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
2171 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
2172 hw->wiphy->n_iface_combinations =
2173 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
2174 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
2175 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
2176 hw->wiphy->n_iface_combinations =
2177 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
2180 hw->wiphy->max_remain_on_channel_duration = 1000;
2182 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2183 WIPHY_FLAG_DISABLE_BEACON_HINTS |
2184 WIPHY_FLAG_IBSS_RSN;
2186 if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
2187 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
2188 WIPHY_WOWLAN_DISCONNECT |
2189 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
2190 WIPHY_WOWLAN_RFKILL_RELEASE;
2191 if (!iwlagn_mod_params.sw_crypto)
2192 hw->wiphy->wowlan.flags |=
2193 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
2194 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
2196 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
2197 hw->wiphy->wowlan.pattern_min_len =
2198 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
2199 hw->wiphy->wowlan.pattern_max_len =
2200 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
2203 if (iwlagn_mod_params.power_save)
2204 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2206 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2208 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2209 /* we create the 802.11 header and a zero-length SSID element */
2210 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
2212 /* Default value; 4 EDCA QOS priorities */
2215 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2217 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2218 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2219 &priv->bands[IEEE80211_BAND_2GHZ];
2220 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2221 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2222 &priv->bands[IEEE80211_BAND_5GHZ];
2224 iwl_leds_init(priv);
2226 ret = ieee80211_register_hw(priv->hw);
2228 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2231 priv->mac80211_registered = 1;
2237 static int iwlagn_mac_start(struct ieee80211_hw *hw)
2239 struct iwl_priv *priv = hw->priv;
2242 IWL_DEBUG_MAC80211(priv, "enter\n");
2244 /* we should be verifying the device is ready to be opened */
2245 mutex_lock(&priv->mutex);
2246 ret = __iwl_up(priv);
2247 mutex_unlock(&priv->mutex);
2251 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2253 /* Now we should be done, and the READY bit should be set. */
2254 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
2257 iwlagn_led_enable(priv);
2260 IWL_DEBUG_MAC80211(priv, "leave\n");
2264 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
2266 struct iwl_priv *priv = hw->priv;
2268 IWL_DEBUG_MAC80211(priv, "enter\n");
2277 flush_workqueue(priv->workqueue);
2279 /* User space software may expect getting rfkill changes
2280 * even if interface is down */
2281 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2282 iwl_enable_rfkill_int(priv);
2284 IWL_DEBUG_MAC80211(priv, "leave\n");
2288 static int iwlagn_send_patterns(struct iwl_priv *priv,
2289 struct cfg80211_wowlan *wowlan)
2291 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
2292 struct iwl_host_cmd cmd = {
2293 .id = REPLY_WOWLAN_PATTERNS,
2294 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2299 if (!wowlan->n_patterns)
2302 cmd.len[0] = sizeof(*pattern_cmd) +
2303 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
2305 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
2309 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
2311 for (i = 0; i < wowlan->n_patterns; i++) {
2312 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
2314 memcpy(&pattern_cmd->patterns[i].mask,
2315 wowlan->patterns[i].mask, mask_len);
2316 memcpy(&pattern_cmd->patterns[i].pattern,
2317 wowlan->patterns[i].pattern,
2318 wowlan->patterns[i].pattern_len);
2319 pattern_cmd->patterns[i].mask_size = mask_len;
2320 pattern_cmd->patterns[i].pattern_size =
2321 wowlan->patterns[i].pattern_len;
2324 cmd.data[0] = pattern_cmd;
2325 err = trans_send_cmd(&priv->trans, &cmd);
2331 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
2332 struct ieee80211_vif *vif,
2333 struct cfg80211_gtk_rekey_data *data)
2335 struct iwl_priv *priv = hw->priv;
2337 if (iwlagn_mod_params.sw_crypto)
2340 mutex_lock(&priv->mutex);
2342 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
2345 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
2346 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
2347 priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
2348 priv->have_rekey_data = true;
2351 mutex_unlock(&priv->mutex);
2354 struct wowlan_key_data {
2355 struct iwl_rxon_context *ctx;
2356 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
2357 struct iwlagn_wowlan_tkip_params_cmd *tkip;
2359 bool error, use_rsc_tsc, use_tkip;
2363 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
2367 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
2368 out[i] = cpu_to_le16(p1k[i]);
2371 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
2372 struct ieee80211_vif *vif,
2373 struct ieee80211_sta *sta,
2374 struct ieee80211_key_conf *key,
2377 struct iwl_priv *priv = hw->priv;
2378 struct wowlan_key_data *data = _data;
2379 struct iwl_rxon_context *ctx = data->ctx;
2380 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
2381 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
2382 struct iwlagn_p1k_cache *rx_p1ks;
2384 struct ieee80211_key_seq seq;
2385 u32 cur_rx_iv32 = 0;
2386 u16 p1k[IWLAGN_P1K_SIZE];
2389 mutex_lock(&priv->mutex);
2391 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2392 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2393 !sta && !ctx->key_mapping_keys)
2394 ret = iwl_set_default_wep_key(priv, ctx, key);
2396 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
2399 IWL_ERR(priv, "Error setting key during suspend!\n");
2403 switch (key->cipher) {
2404 case WLAN_CIPHER_SUITE_TKIP:
2406 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
2407 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
2409 rx_p1ks = data->tkip->rx_uni;
2411 ieee80211_get_key_tx_seq(key, &seq);
2412 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
2413 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
2415 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
2416 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
2418 memcpy(data->tkip->mic_keys.tx,
2419 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
2420 IWLAGN_MIC_KEY_SIZE);
2422 rx_mic_key = data->tkip->mic_keys.rx_unicast;
2424 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
2425 rx_p1ks = data->tkip->rx_multi;
2426 rx_mic_key = data->tkip->mic_keys.rx_mcast;
2430 * For non-QoS this relies on the fact that both the uCode and
2431 * mac80211 use TID 0 (as they need to to avoid replay attacks)
2432 * for checking the IV in the frames.
2434 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2435 ieee80211_get_key_rx_seq(key, i, &seq);
2436 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
2437 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
2438 /* wrapping isn't allowed, AP must rekey */
2439 if (seq.tkip.iv32 > cur_rx_iv32)
2440 cur_rx_iv32 = seq.tkip.iv32;
2443 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
2444 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
2445 ieee80211_get_tkip_rx_p1k(key, data->bssid,
2446 cur_rx_iv32 + 1, p1k);
2447 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
2450 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
2451 IWLAGN_MIC_KEY_SIZE);
2453 data->use_tkip = true;
2454 data->use_rsc_tsc = true;
2456 case WLAN_CIPHER_SUITE_CCMP:
2458 u8 *pn = seq.ccmp.pn;
2460 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
2461 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
2463 ieee80211_get_key_tx_seq(key, &seq);
2464 aes_tx_sc->pn = cpu_to_le64(
2467 ((u64)pn[3] << 16) |
2468 ((u64)pn[2] << 24) |
2469 ((u64)pn[1] << 32) |
2470 ((u64)pn[0] << 40));
2472 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
2475 * For non-QoS this relies on the fact that both the uCode and
2476 * mac80211 use TID 0 for checking the IV in the frames.
2478 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2479 u8 *pn = seq.ccmp.pn;
2481 ieee80211_get_key_rx_seq(key, i, &seq);
2482 aes_sc->pn = cpu_to_le64(
2485 ((u64)pn[3] << 16) |
2486 ((u64)pn[2] << 24) |
2487 ((u64)pn[1] << 32) |
2488 ((u64)pn[0] << 40));
2490 data->use_rsc_tsc = true;
2494 mutex_unlock(&priv->mutex);
2497 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2498 struct cfg80211_wowlan *wowlan)
2500 struct iwl_priv *priv = hw->priv;
2501 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2502 struct iwl_rxon_cmd rxon;
2503 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2504 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2505 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2506 struct wowlan_key_data key_data = {
2508 .bssid = ctx->active.bssid_addr,
2509 .use_rsc_tsc = false,
2516 if (WARN_ON(!wowlan))
2519 mutex_lock(&priv->mutex);
2521 /* Don't attempt WoWLAN when not associated, tear down instead. */
2522 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2523 !iwl_is_associated_ctx(ctx)) {
2528 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2529 if (!key_data.rsc_tsc) {
2534 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2537 * We know the last used seqno, and the uCode expects to know that
2538 * one, it will increment before TX.
2540 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2541 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2544 * For QoS counters, we store the one to use next, so subtract 0x10
2545 * since the uCode will add 0x10 before using the value.
2547 for (i = 0; i < 8; i++) {
2548 seq = priv->stations[IWL_AP_ID].tid[i].seq_number;
2550 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2553 if (wowlan->disconnect)
2554 wakeup_filter_cmd.enabled |=
2555 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2556 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2557 if (wowlan->magic_pkt)
2558 wakeup_filter_cmd.enabled |=
2559 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2560 if (wowlan->gtk_rekey_failure)
2561 wakeup_filter_cmd.enabled |=
2562 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2563 if (wowlan->eap_identity_req)
2564 wakeup_filter_cmd.enabled |=
2565 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2566 if (wowlan->four_way_handshake)
2567 wakeup_filter_cmd.enabled |=
2568 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2569 if (wowlan->rfkill_release)
2570 wakeup_filter_cmd.enabled |=
2571 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2572 if (wowlan->n_patterns)
2573 wakeup_filter_cmd.enabled |=
2574 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2576 iwl_scan_cancel_timeout(priv, 200);
2578 memcpy(&rxon, &ctx->active, sizeof(rxon));
2580 trans_stop_device(&priv->trans);
2582 priv->wowlan = true;
2584 ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2589 /* now configure WoWLAN ucode */
2590 ret = iwl_alive_start(priv);
2594 memcpy(&ctx->staging, &rxon, sizeof(rxon));
2595 ret = iwlagn_commit_rxon(priv, ctx);
2599 ret = iwl_power_update_mode(priv, true);
2603 if (!iwlagn_mod_params.sw_crypto) {
2604 /* mark all keys clear */
2605 priv->ucode_key_table = 0;
2606 ctx->key_mapping_keys = 0;
2609 * This needs to be unlocked due to lock ordering
2610 * constraints. Since we're in the suspend path
2611 * that isn't really a problem though.
2613 mutex_unlock(&priv->mutex);
2614 ieee80211_iter_keys(priv->hw, ctx->vif,
2615 iwlagn_wowlan_program_keys,
2617 mutex_lock(&priv->mutex);
2618 if (key_data.error) {
2623 if (key_data.use_rsc_tsc) {
2624 struct iwl_host_cmd rsc_tsc_cmd = {
2625 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2627 .data[0] = key_data.rsc_tsc,
2628 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2629 .len[0] = sizeof(*key_data.rsc_tsc),
2632 ret = trans_send_cmd(&priv->trans, &rsc_tsc_cmd);
2637 if (key_data.use_tkip) {
2638 ret = trans_send_cmd_pdu(&priv->trans,
2639 REPLY_WOWLAN_TKIP_PARAMS,
2640 CMD_SYNC, sizeof(tkip_cmd),
2646 if (priv->have_rekey_data) {
2647 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2648 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2649 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2650 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2651 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2652 kek_kck_cmd.replay_ctr = priv->replay_ctr;
2654 ret = trans_send_cmd_pdu(&priv->trans,
2655 REPLY_WOWLAN_KEK_KCK_MATERIAL,
2656 CMD_SYNC, sizeof(kek_kck_cmd),
2663 ret = trans_send_cmd_pdu(&priv->trans, REPLY_WOWLAN_WAKEUP_FILTER,
2664 CMD_SYNC, sizeof(wakeup_filter_cmd),
2665 &wakeup_filter_cmd);
2669 ret = iwlagn_send_patterns(priv, wowlan);
2673 device_set_wakeup_enable(priv->bus->dev, true);
2675 /* Now let the ucode operate on its own */
2676 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2677 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2682 priv->wowlan = false;
2683 iwlagn_prepare_restart(priv);
2684 ieee80211_restart_hw(priv->hw);
2686 mutex_unlock(&priv->mutex);
2687 kfree(key_data.rsc_tsc);
2691 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2693 struct iwl_priv *priv = hw->priv;
2694 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2695 struct ieee80211_vif *vif;
2696 unsigned long flags;
2697 u32 base, status = 0xffffffff;
2700 mutex_lock(&priv->mutex);
2702 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2703 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2705 base = priv->device_pointers.error_event_table;
2706 if (iwlagn_hw_valid_rtc_data_addr(base)) {
2707 spin_lock_irqsave(&priv->reg_lock, flags);
2708 ret = iwl_grab_nic_access_silent(priv);
2710 iwl_write32(priv, HBUS_TARG_MEM_RADDR, base);
2711 status = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
2712 iwl_release_nic_access(priv);
2714 spin_unlock_irqrestore(&priv->reg_lock, flags);
2716 #ifdef CONFIG_IWLWIFI_DEBUGFS
2718 if (!priv->wowlan_sram)
2720 kzalloc(priv->ucode_wowlan.data.len,
2723 if (priv->wowlan_sram)
2724 _iwl_read_targ_mem_words(
2725 priv, 0x800000, priv->wowlan_sram,
2726 priv->ucode_wowlan.data.len / 4);
2731 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2734 priv->wowlan = false;
2736 device_set_wakeup_enable(priv->bus->dev, false);
2738 iwlagn_prepare_restart(priv);
2740 memset((void *)&ctx->active, 0, sizeof(ctx->active));
2741 iwl_connection_init_rx_config(priv, ctx);
2742 iwlagn_set_rxon_chain(priv, ctx);
2744 mutex_unlock(&priv->mutex);
2746 ieee80211_resume_disconnect(vif);
2752 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2754 struct iwl_priv *priv = hw->priv;
2756 IWL_DEBUG_MACDUMP(priv, "enter\n");
2758 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2759 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2761 if (iwlagn_tx_skb(priv, skb))
2762 dev_kfree_skb_any(skb);
2764 IWL_DEBUG_MACDUMP(priv, "leave\n");
2767 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2768 struct ieee80211_vif *vif,
2769 struct ieee80211_key_conf *keyconf,
2770 struct ieee80211_sta *sta,
2771 u32 iv32, u16 *phase1key)
2773 struct iwl_priv *priv = hw->priv;
2775 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2778 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2779 struct ieee80211_vif *vif,
2780 struct ieee80211_sta *sta,
2781 struct ieee80211_key_conf *key)
2783 struct iwl_priv *priv = hw->priv;
2784 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2785 struct iwl_rxon_context *ctx = vif_priv->ctx;
2787 bool is_default_wep_key = false;
2789 IWL_DEBUG_MAC80211(priv, "enter\n");
2791 if (iwlagn_mod_params.sw_crypto) {
2792 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2797 * We could program these keys into the hardware as well, but we
2798 * don't expect much multicast traffic in IBSS and having keys
2799 * for more stations is probably more useful.
2801 * Mark key TX-only and return 0.
2803 if (vif->type == NL80211_IFTYPE_ADHOC &&
2804 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2805 key->hw_key_idx = WEP_INVALID_OFFSET;
2809 /* If they key was TX-only, accept deletion */
2810 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2813 mutex_lock(&priv->mutex);
2814 iwl_scan_cancel_timeout(priv, 100);
2816 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2819 * If we are getting WEP group key and we didn't receive any key mapping
2820 * so far, we are in legacy wep mode (group key only), otherwise we are
2822 * In legacy wep mode, we use another host command to the uCode.
2824 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2825 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2827 is_default_wep_key = !ctx->key_mapping_keys;
2829 is_default_wep_key =
2830 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2836 if (is_default_wep_key) {
2837 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2840 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2843 * can't add key for RX, but we don't need it
2844 * in the device for TX so still return 0
2847 key->hw_key_idx = WEP_INVALID_OFFSET;
2850 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2853 if (is_default_wep_key)
2854 ret = iwl_remove_default_wep_key(priv, ctx, key);
2856 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2858 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2864 mutex_unlock(&priv->mutex);
2865 IWL_DEBUG_MAC80211(priv, "leave\n");
2870 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2871 struct ieee80211_vif *vif,
2872 enum ieee80211_ampdu_mlme_action action,
2873 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2876 struct iwl_priv *priv = hw->priv;
2878 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2880 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2883 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2886 mutex_lock(&priv->mutex);
2889 case IEEE80211_AMPDU_RX_START:
2890 IWL_DEBUG_HT(priv, "start Rx\n");
2891 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2893 case IEEE80211_AMPDU_RX_STOP:
2894 IWL_DEBUG_HT(priv, "stop Rx\n");
2895 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2896 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2899 case IEEE80211_AMPDU_TX_START:
2900 IWL_DEBUG_HT(priv, "start Tx\n");
2901 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2903 priv->agg_tids_count++;
2904 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2905 priv->agg_tids_count);
2908 case IEEE80211_AMPDU_TX_STOP:
2909 IWL_DEBUG_HT(priv, "stop Tx\n");
2910 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2911 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2912 priv->agg_tids_count--;
2913 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2914 priv->agg_tids_count);
2916 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2918 if (priv->cfg->ht_params &&
2919 priv->cfg->ht_params->use_rts_for_aggregation) {
2921 * switch off RTS/CTS if it was previously enabled
2923 sta_priv->lq_sta.lq.general_params.flags &=
2924 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2925 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2926 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2929 case IEEE80211_AMPDU_TX_OPERATIONAL:
2930 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2932 trans_txq_agg_setup(&priv->trans, iwl_sta_id(sta), tid,
2936 * If the limit is 0, then it wasn't initialised yet,
2937 * use the default. We can do that since we take the
2938 * minimum below, and we don't want to go above our
2939 * default due to hardware restrictions.
2941 if (sta_priv->max_agg_bufsize == 0)
2942 sta_priv->max_agg_bufsize =
2943 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2946 * Even though in theory the peer could have different
2947 * aggregation reorder buffer sizes for different sessions,
2948 * our ucode doesn't allow for that and has a global limit
2949 * for each station. Therefore, use the minimum of all the
2950 * aggregation sessions and our default value.
2952 sta_priv->max_agg_bufsize =
2953 min(sta_priv->max_agg_bufsize, buf_size);
2955 if (priv->cfg->ht_params &&
2956 priv->cfg->ht_params->use_rts_for_aggregation) {
2958 * switch to RTS/CTS if it is the prefer protection
2959 * method for HT traffic
2962 sta_priv->lq_sta.lq.general_params.flags |=
2963 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2966 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2967 sta_priv->max_agg_bufsize;
2969 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2970 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2972 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2977 mutex_unlock(&priv->mutex);
2982 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2983 struct ieee80211_vif *vif,
2984 struct ieee80211_sta *sta)
2986 struct iwl_priv *priv = hw->priv;
2987 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2988 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2989 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2993 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2995 mutex_lock(&priv->mutex);
2996 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2998 sta_priv->common.sta_id = IWL_INVALID_STATION;
3000 atomic_set(&sta_priv->pending_frames, 0);
3001 if (vif->type == NL80211_IFTYPE_AP)
3002 sta_priv->client = true;
3004 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3005 is_ap, sta, &sta_id);
3007 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3009 /* Should we return success if return code is EEXIST ? */
3010 mutex_unlock(&priv->mutex);
3014 sta_priv->common.sta_id = sta_id;
3016 /* Initialize rate scaling */
3017 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3019 iwl_rs_rate_init(priv, sta, sta_id);
3020 mutex_unlock(&priv->mutex);
3025 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
3026 struct ieee80211_channel_switch *ch_switch)
3028 struct iwl_priv *priv = hw->priv;
3029 const struct iwl_channel_info *ch_info;
3030 struct ieee80211_conf *conf = &hw->conf;
3031 struct ieee80211_channel *channel = ch_switch->channel;
3032 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3035 * When we add support for multiple interfaces, we need to
3036 * revisit this. The channel switch command in the device
3037 * only affects the BSS context, but what does that really
3038 * mean? And what if we get a CSA on the second interface?
3039 * This needs a lot of work.
3041 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3044 IWL_DEBUG_MAC80211(priv, "enter\n");
3046 mutex_lock(&priv->mutex);
3048 if (iwl_is_rfkill(priv))
3051 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3052 test_bit(STATUS_SCANNING, &priv->status) ||
3053 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
3056 if (!iwl_is_associated_ctx(ctx))
3059 if (!priv->cfg->lib->set_channel_switch)
3062 ch = channel->hw_value;
3063 if (le16_to_cpu(ctx->active.channel) == ch)
3066 ch_info = iwl_get_channel_info(priv, channel->band, ch);
3067 if (!is_channel_valid(ch_info)) {
3068 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3072 spin_lock_irq(&priv->lock);
3074 priv->current_ht_config.smps = conf->smps_mode;
3076 /* Configure HT40 channels */
3077 ctx->ht.enabled = conf_is_ht(conf);
3078 if (ctx->ht.enabled) {
3079 if (conf_is_ht40_minus(conf)) {
3080 ctx->ht.extension_chan_offset =
3081 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3082 ctx->ht.is_40mhz = true;
3083 } else if (conf_is_ht40_plus(conf)) {
3084 ctx->ht.extension_chan_offset =
3085 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3086 ctx->ht.is_40mhz = true;
3088 ctx->ht.extension_chan_offset =
3089 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3090 ctx->ht.is_40mhz = false;
3093 ctx->ht.is_40mhz = false;
3095 if ((le16_to_cpu(ctx->staging.channel) != ch))
3096 ctx->staging.flags = 0;
3098 iwl_set_rxon_channel(priv, channel, ctx);
3099 iwl_set_rxon_ht(priv, ht_conf);
3100 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
3102 spin_unlock_irq(&priv->lock);
3106 * at this point, staging_rxon has the
3107 * configuration for channel switch
3109 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
3110 priv->switch_channel = cpu_to_le16(ch);
3111 if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
3112 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
3113 priv->switch_channel = 0;
3114 ieee80211_chswitch_done(ctx->vif, false);
3118 mutex_unlock(&priv->mutex);
3119 IWL_DEBUG_MAC80211(priv, "leave\n");
3122 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3123 unsigned int changed_flags,
3124 unsigned int *total_flags,
3127 struct iwl_priv *priv = hw->priv;
3128 __le32 filter_or = 0, filter_nand = 0;
3129 struct iwl_rxon_context *ctx;
3131 #define CHK(test, flag) do { \
3132 if (*total_flags & (test)) \
3133 filter_or |= (flag); \
3135 filter_nand |= (flag); \
3138 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3139 changed_flags, *total_flags);
3141 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3142 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3143 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
3144 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3148 mutex_lock(&priv->mutex);
3150 for_each_context(priv, ctx) {
3151 ctx->staging.filter_flags &= ~filter_nand;
3152 ctx->staging.filter_flags |= filter_or;
3155 * Not committing directly because hardware can perform a scan,
3156 * but we'll eventually commit the filter flags change anyway.
3160 mutex_unlock(&priv->mutex);
3163 * Receiving all multicast frames is always enabled by the
3164 * default flags setup in iwl_connection_init_rx_config()
3165 * since we currently do not support programming multicast
3166 * filters into the device.
3168 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3169 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3172 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
3174 struct iwl_priv *priv = hw->priv;
3176 mutex_lock(&priv->mutex);
3177 IWL_DEBUG_MAC80211(priv, "enter\n");
3179 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3180 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3183 if (iwl_is_rfkill(priv)) {
3184 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3189 * mac80211 will not push any more frames for transmit
3190 * until the flush is completed
3193 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3194 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
3195 IWL_ERR(priv, "flush request fail\n");
3199 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3200 iwlagn_wait_tx_queue_empty(priv);
3202 mutex_unlock(&priv->mutex);
3203 IWL_DEBUG_MAC80211(priv, "leave\n");
3206 static void iwlagn_disable_roc(struct iwl_priv *priv)
3208 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3209 struct ieee80211_channel *chan = ACCESS_ONCE(priv->hw->conf.channel);
3211 lockdep_assert_held(&priv->mutex);
3213 if (!ctx->is_active)
3216 ctx->staging.dev_type = RXON_DEV_TYPE_2STA;
3217 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3218 iwl_set_rxon_channel(priv, chan, ctx);
3219 iwl_set_flags_for_band(priv, ctx, chan->band, NULL);
3221 priv->hw_roc_channel = NULL;
3223 iwlagn_commit_rxon(priv, ctx);
3225 ctx->is_active = false;
3228 static void iwlagn_bg_roc_done(struct work_struct *work)
3230 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3233 mutex_lock(&priv->mutex);
3234 ieee80211_remain_on_channel_expired(priv->hw);
3235 iwlagn_disable_roc(priv);
3236 mutex_unlock(&priv->mutex);
3239 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
3240 struct ieee80211_channel *channel,
3241 enum nl80211_channel_type channel_type,
3244 struct iwl_priv *priv = hw->priv;
3247 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3250 if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
3251 BIT(NL80211_IFTYPE_P2P_CLIENT)))
3254 mutex_lock(&priv->mutex);
3256 if (priv->contexts[IWL_RXON_CTX_PAN].is_active ||
3257 test_bit(STATUS_SCAN_HW, &priv->status)) {
3262 priv->contexts[IWL_RXON_CTX_PAN].is_active = true;
3263 priv->hw_roc_channel = channel;
3264 priv->hw_roc_chantype = channel_type;
3265 priv->hw_roc_duration = DIV_ROUND_UP(duration * 1000, 1024);
3266 iwlagn_commit_rxon(priv, &priv->contexts[IWL_RXON_CTX_PAN]);
3267 queue_delayed_work(priv->workqueue, &priv->hw_roc_work,
3268 msecs_to_jiffies(duration + 20));
3270 msleep(IWL_MIN_SLOT_TIME); /* TU is almost ms */
3271 ieee80211_ready_on_channel(priv->hw);
3274 mutex_unlock(&priv->mutex);
3279 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
3281 struct iwl_priv *priv = hw->priv;
3283 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3286 cancel_delayed_work_sync(&priv->hw_roc_work);
3288 mutex_lock(&priv->mutex);
3289 iwlagn_disable_roc(priv);
3290 mutex_unlock(&priv->mutex);
3295 /*****************************************************************************
3297 * driver setup and teardown
3299 *****************************************************************************/
3301 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3303 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3305 init_waitqueue_head(&priv->wait_command_queue);
3307 INIT_WORK(&priv->restart, iwl_bg_restart);
3308 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3309 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3310 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3311 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3312 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3313 INIT_DELAYED_WORK(&priv->hw_roc_work, iwlagn_bg_roc_done);
3315 iwl_setup_scan_deferred_work(priv);
3317 if (priv->cfg->lib->bt_setup_deferred_work)
3318 priv->cfg->lib->bt_setup_deferred_work(priv);
3320 init_timer(&priv->statistics_periodic);
3321 priv->statistics_periodic.data = (unsigned long)priv;
3322 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3324 init_timer(&priv->ucode_trace);
3325 priv->ucode_trace.data = (unsigned long)priv;
3326 priv->ucode_trace.function = iwl_bg_ucode_trace;
3328 init_timer(&priv->watchdog);
3329 priv->watchdog.data = (unsigned long)priv;
3330 priv->watchdog.function = iwl_bg_watchdog;
3333 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3335 if (priv->cfg->lib->cancel_deferred_work)
3336 priv->cfg->lib->cancel_deferred_work(priv);
3338 cancel_work_sync(&priv->run_time_calib_work);
3339 cancel_work_sync(&priv->beacon_update);
3341 iwl_cancel_scan_deferred_work(priv);
3343 cancel_work_sync(&priv->bt_full_concurrency);
3344 cancel_work_sync(&priv->bt_runtime_config);
3346 del_timer_sync(&priv->statistics_periodic);
3347 del_timer_sync(&priv->ucode_trace);
3350 static void iwl_init_hw_rates(struct iwl_priv *priv,
3351 struct ieee80211_rate *rates)
3355 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3356 rates[i].bitrate = iwl_rates[i].ieee * 5;
3357 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3358 rates[i].hw_value_short = i;
3360 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3362 * If CCK != 1M then set short preamble rate flag.
3365 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3366 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3371 static int iwl_init_drv(struct iwl_priv *priv)
3375 spin_lock_init(&priv->sta_lock);
3376 spin_lock_init(&priv->hcmd_lock);
3378 mutex_init(&priv->mutex);
3380 priv->ieee_channels = NULL;
3381 priv->ieee_rates = NULL;
3382 priv->band = IEEE80211_BAND_2GHZ;
3384 priv->iw_mode = NL80211_IFTYPE_STATION;
3385 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3386 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3387 priv->agg_tids_count = 0;
3389 /* initialize force reset */
3390 priv->force_reset[IWL_RF_RESET].reset_duration =
3391 IWL_DELAY_NEXT_FORCE_RF_RESET;
3392 priv->force_reset[IWL_FW_RESET].reset_duration =
3393 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3395 priv->rx_statistics_jiffies = jiffies;
3397 /* Choose which receivers/antennas to use */
3398 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3400 iwl_init_scan_params(priv);
3403 if (priv->cfg->bt_params &&
3404 priv->cfg->bt_params->advanced_bt_coexist) {
3405 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3406 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3407 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3408 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3409 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3410 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3413 ret = iwl_init_channel_map(priv);
3415 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3419 ret = iwlcore_init_geos(priv);
3421 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3422 goto err_free_channel_map;
3424 iwl_init_hw_rates(priv, priv->ieee_rates);
3428 err_free_channel_map:
3429 iwl_free_channel_map(priv);
3434 static void iwl_uninit_drv(struct iwl_priv *priv)
3436 iwl_calib_free_results(priv);
3437 iwlcore_free_geos(priv);
3438 iwl_free_channel_map(priv);
3439 kfree(priv->scan_cmd);
3440 kfree(priv->beacon_cmd);
3441 #ifdef CONFIG_IWLWIFI_DEBUGFS
3442 kfree(priv->wowlan_sram);
3446 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3447 enum ieee80211_rssi_event rssi_event)
3449 struct iwl_priv *priv = hw->priv;
3451 mutex_lock(&priv->mutex);
3453 if (priv->cfg->bt_params &&
3454 priv->cfg->bt_params->advanced_bt_coexist) {
3455 if (rssi_event == RSSI_EVENT_LOW)
3456 priv->bt_enable_pspoll = true;
3457 else if (rssi_event == RSSI_EVENT_HIGH)
3458 priv->bt_enable_pspoll = false;
3460 iwlagn_send_advance_bt_config(priv);
3462 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3463 "ignoring RSSI callback\n");
3466 mutex_unlock(&priv->mutex);
3469 struct ieee80211_ops iwlagn_hw_ops = {
3470 .tx = iwlagn_mac_tx,
3471 .start = iwlagn_mac_start,
3472 .stop = iwlagn_mac_stop,
3474 .suspend = iwlagn_mac_suspend,
3475 .resume = iwlagn_mac_resume,
3477 .add_interface = iwl_mac_add_interface,
3478 .remove_interface = iwl_mac_remove_interface,
3479 .change_interface = iwl_mac_change_interface,
3480 .config = iwlagn_mac_config,
3481 .configure_filter = iwlagn_configure_filter,
3482 .set_key = iwlagn_mac_set_key,
3483 .update_tkip_key = iwlagn_mac_update_tkip_key,
3484 .set_rekey_data = iwlagn_mac_set_rekey_data,
3485 .conf_tx = iwl_mac_conf_tx,
3486 .bss_info_changed = iwlagn_bss_info_changed,
3487 .ampdu_action = iwlagn_mac_ampdu_action,
3488 .hw_scan = iwl_mac_hw_scan,
3489 .sta_notify = iwlagn_mac_sta_notify,
3490 .sta_add = iwlagn_mac_sta_add,
3491 .sta_remove = iwl_mac_sta_remove,
3492 .channel_switch = iwlagn_mac_channel_switch,
3493 .flush = iwlagn_mac_flush,
3494 .tx_last_beacon = iwl_mac_tx_last_beacon,
3495 .remain_on_channel = iwl_mac_remain_on_channel,
3496 .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3497 .offchannel_tx = iwl_mac_offchannel_tx,
3498 .offchannel_tx_cancel_wait = iwl_mac_offchannel_tx_cancel_wait,
3499 .rssi_callback = iwl_mac_rssi_callback,
3500 CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3501 CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3504 static u32 iwl_hw_detect(struct iwl_priv *priv)
3506 return iwl_read32(priv, CSR_HW_REV);
3509 static int iwl_set_hw_params(struct iwl_priv *priv)
3511 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
3512 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
3513 if (iwlagn_mod_params.amsdu_size_8K)
3514 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
3516 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
3518 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3520 if (iwlagn_mod_params.disable_11n)
3521 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3523 /* Device-specific setup */
3524 return priv->cfg->lib->set_hw_params(priv);
3527 static const u8 iwlagn_bss_ac_to_fifo[] = {
3534 static const u8 iwlagn_bss_ac_to_queue[] = {
3538 static const u8 iwlagn_pan_ac_to_fifo[] = {
3539 IWL_TX_FIFO_VO_IPAN,
3540 IWL_TX_FIFO_VI_IPAN,
3541 IWL_TX_FIFO_BE_IPAN,
3542 IWL_TX_FIFO_BK_IPAN,
3545 static const u8 iwlagn_pan_ac_to_queue[] = {
3549 /* This function both allocates and initializes hw and priv. */
3550 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3552 struct iwl_priv *priv;
3553 /* mac80211 allocates memory for this device instance, including
3554 * space for this driver's private structure */
3555 struct ieee80211_hw *hw;
3557 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3559 pr_err("%s: Can not allocate network device\n",
3571 static void iwl_init_context(struct iwl_priv *priv)
3576 * The default context is always valid,
3577 * more may be discovered when firmware
3580 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
3582 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
3583 priv->contexts[i].ctxid = i;
3585 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
3586 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
3587 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
3588 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
3589 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
3590 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
3591 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
3592 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
3593 priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
3594 priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
3595 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
3596 BIT(NL80211_IFTYPE_ADHOC);
3597 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
3598 BIT(NL80211_IFTYPE_STATION);
3599 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
3600 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
3601 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
3602 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
3604 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
3605 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
3606 REPLY_WIPAN_RXON_TIMING;
3607 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
3608 REPLY_WIPAN_RXON_ASSOC;
3609 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
3610 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
3611 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
3612 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
3613 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
3614 priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
3615 priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
3616 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
3617 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
3618 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
3619 #ifdef CONFIG_IWL_P2P
3620 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
3621 BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO);
3623 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
3624 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
3625 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
3627 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
3630 int iwl_probe(struct iwl_bus *bus, struct iwl_cfg *cfg)
3633 struct iwl_priv *priv;
3634 struct ieee80211_hw *hw;
3638 /************************
3639 * 1. Allocating HW data
3640 ************************/
3641 hw = iwl_alloc_all(cfg);
3649 bus_set_drv_data(priv->bus, priv);
3651 /* At this point both hw and priv are allocated. */
3653 SET_IEEE80211_DEV(hw, priv->bus->dev);
3655 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3657 priv->inta_mask = CSR_INI_SET_MASK;
3659 /* is antenna coupling more than 35dB ? */
3660 priv->bt_ant_couple_ok =
3661 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3664 /* enable/disable bt channel inhibition */
3665 priv->bt_ch_announce = iwlagn_bt_ch_announce;
3666 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3667 (priv->bt_ch_announce) ? "On" : "Off");
3669 if (iwl_alloc_traffic_mem(priv))
3670 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3672 /* these spin locks will be used in apm_ops.init and EEPROM access
3673 * we should init now
3675 spin_lock_init(&priv->reg_lock);
3676 spin_lock_init(&priv->lock);
3679 * stop and reset the on-board processor just in case it is in a
3680 * strange state ... like being left stranded by a primary kernel
3681 * and this is now the kdump kernel trying to start up
3683 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3685 /***********************
3686 * 3. Read REV register
3687 ***********************/
3688 hw_rev = iwl_hw_detect(priv);
3689 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3690 priv->cfg->name, hw_rev);
3692 err = iwl_trans_register(&priv->trans, priv);
3694 goto out_free_traffic_mem;
3696 if (trans_prepare_card_hw(&priv->trans)) {
3698 IWL_WARN(priv, "Failed, HW not ready\n");
3699 goto out_free_trans;
3705 /* Read the EEPROM */
3706 err = iwl_eeprom_init(priv, hw_rev);
3708 IWL_ERR(priv, "Unable to init EEPROM\n");
3709 goto out_free_trans;
3711 err = iwl_eeprom_check_version(priv);
3713 goto out_free_eeprom;
3715 err = iwl_eeprom_check_sku(priv);
3717 goto out_free_eeprom;
3719 /* extract MAC Address */
3720 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3721 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3722 priv->hw->wiphy->addresses = priv->addresses;
3723 priv->hw->wiphy->n_addresses = 1;
3724 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3726 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3728 priv->addresses[1].addr[5]++;
3729 priv->hw->wiphy->n_addresses++;
3732 /* initialize all valid contexts */
3733 iwl_init_context(priv);
3735 /************************
3736 * 5. Setup HW constants
3737 ************************/
3738 if (iwl_set_hw_params(priv)) {
3740 IWL_ERR(priv, "failed to set hw parameters\n");
3741 goto out_free_eeprom;
3744 /*******************
3746 *******************/
3748 err = iwl_init_drv(priv);
3750 goto out_free_eeprom;
3751 /* At this point both hw and priv are initialized. */
3753 /********************
3755 ********************/
3756 iwl_setup_deferred_work(priv);
3757 iwl_setup_rx_handlers(priv);
3758 iwl_testmode_init(priv);
3760 /*********************************************
3761 * 8. Enable interrupts
3762 *********************************************/
3764 iwl_enable_rfkill_int(priv);
3766 /* If platform's RF_KILL switch is NOT set to KILL */
3767 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3768 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3770 set_bit(STATUS_RF_KILL_HW, &priv->status);
3772 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3773 test_bit(STATUS_RF_KILL_HW, &priv->status));
3775 iwl_power_initialize(priv);
3776 iwl_tt_initialize(priv);
3778 init_completion(&priv->firmware_loading_complete);
3780 err = iwl_request_firmware(priv, true);
3782 goto out_destroy_workqueue;
3786 out_destroy_workqueue:
3787 destroy_workqueue(priv->workqueue);
3788 priv->workqueue = NULL;
3789 iwl_uninit_drv(priv);
3791 iwl_eeprom_free(priv);
3793 trans_free(&priv->trans);
3794 out_free_traffic_mem:
3795 iwl_free_traffic_mem(priv);
3796 ieee80211_free_hw(priv->hw);
3801 void __devexit iwl_remove(struct iwl_priv * priv)
3803 unsigned long flags;
3805 wait_for_completion(&priv->firmware_loading_complete);
3807 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3809 iwl_dbgfs_unregister(priv);
3810 sysfs_remove_group(&priv->bus->dev->kobj,
3811 &iwl_attribute_group);
3813 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3814 * to be called and iwl_down since we are removing the device
3815 * we need to set STATUS_EXIT_PENDING bit.
3817 set_bit(STATUS_EXIT_PENDING, &priv->status);
3819 iwl_testmode_cleanup(priv);
3820 iwl_leds_exit(priv);
3822 if (priv->mac80211_registered) {
3823 ieee80211_unregister_hw(priv->hw);
3824 priv->mac80211_registered = 0;
3827 /* Reset to low power before unloading driver. */
3832 /* make sure we flush any pending irq or
3833 * tasklet for the driver
3835 spin_lock_irqsave(&priv->lock, flags);
3836 iwl_disable_interrupts(priv);
3837 spin_unlock_irqrestore(&priv->lock, flags);
3839 trans_sync_irq(&priv->trans);
3841 iwl_dealloc_ucode(priv);
3843 trans_rx_free(&priv->trans);
3844 trans_tx_free(&priv->trans);
3846 iwl_eeprom_free(priv);
3848 /*netif_stop_queue(dev); */
3849 flush_workqueue(priv->workqueue);
3851 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3852 * priv->workqueue... so we can't take down the workqueue
3854 destroy_workqueue(priv->workqueue);
3855 priv->workqueue = NULL;
3856 iwl_free_traffic_mem(priv);
3858 trans_free(&priv->trans);
3860 bus_set_drv_data(priv->bus, NULL);
3862 iwl_uninit_drv(priv);
3864 dev_kfree_skb(priv->beacon_skb);
3866 ieee80211_free_hw(priv->hw);
3870 /*****************************************************************************
3872 * driver and module entry point
3874 *****************************************************************************/
3875 static int __init iwl_init(void)
3879 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3880 pr_info(DRV_COPYRIGHT "\n");
3882 ret = iwlagn_rate_control_register();
3884 pr_err("Unable to register rate control algorithm: %d\n", ret);
3888 ret = iwl_pci_register_driver();
3891 goto error_register;
3895 iwlagn_rate_control_unregister();
3899 static void __exit iwl_exit(void)
3901 iwl_pci_unregister_driver();
3902 iwlagn_rate_control_unregister();
3905 module_exit(iwl_exit);
3906 module_init(iwl_init);
3908 #ifdef CONFIG_IWLWIFI_DEBUG
3909 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3910 MODULE_PARM_DESC(debug, "debug output mask");
3913 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3914 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3915 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3916 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3917 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3918 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3919 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3921 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3922 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3923 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3925 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
3927 MODULE_PARM_DESC(ucode_alternative,
3928 "specify ucode alternative to use from ucode file");
3930 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
3931 MODULE_PARM_DESC(antenna_coupling,
3932 "specify antenna coupling in dB (defualt: 0 dB)");
3934 module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO);
3935 MODULE_PARM_DESC(bt_ch_inhibition,
3936 "Disable BT channel inhibition (default: enable)");
3938 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3939 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3941 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3942 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3944 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3945 MODULE_PARM_DESC(wd_disable,
3946 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3949 * set bt_coex_active to true, uCode will do kill/defer
3950 * every time the priority line is asserted (BT is sending signals on the
3951 * priority line in the PCIx).
3952 * set bt_coex_active to false, uCode will ignore the BT activity and
3953 * perform the normal operation
3955 * User might experience transmit issue on some platform due to WiFi/BT
3956 * co-exist problem. The possible behaviors are:
3957 * Able to scan and finding all the available AP
3958 * Not able to associate with any AP
3959 * On those platforms, WiFi communication can be restored by set
3960 * "bt_coex_active" module parameter to "false"
3962 * default: bt_coex_active = true (BT_COEX_ENABLE)
3964 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3966 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3968 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3969 MODULE_PARM_DESC(led_mode, "0=system default, "
3970 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3972 module_param_named(power_save, iwlagn_mod_params.power_save,
3974 MODULE_PARM_DESC(power_save,
3975 "enable WiFi power management (default: disable)");
3977 module_param_named(power_level, iwlagn_mod_params.power_level,
3979 MODULE_PARM_DESC(power_level,
3980 "default power save level (range from 1 - 5, default: 1)");
3983 * For now, keep using power level 1 instead of automatically
3986 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3988 MODULE_PARM_DESC(no_sleep_autoadjust,
3989 "don't automatically adjust sleep level "
3990 "according to maximum network latency (default: true)");