iwlagn: separate init calib and rt calib
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blob3af49ae6297989b7f1cb89623fff74bf72cf6eff
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
15 * more details.
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/firmware.h>
39 #include <linux/etherdevice.h>
40 #include <linux/if_arp.h>
42 #include <net/mac80211.h>
44 #include <asm/div64.h>
46 #include "iwl-eeprom.h"
47 #include "iwl-dev.h"
48 #include "iwl-core.h"
49 #include "iwl-io.h"
50 #include "iwl-helpers.h"
51 #include "iwl-sta.h"
52 #include "iwl-agn-calib.h"
53 #include "iwl-agn.h"
54 #include "iwl-shared.h"
55 #include "iwl-bus.h"
56 #include "iwl-trans.h"
58 /******************************************************************************
60 * module boiler plate
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
70 #define VD "d"
71 #else
72 #define VD
73 #endif
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");
82 MODULE_ALIAS("iwlagn");
84 void iwl_update_chain_flags(struct iwl_priv *priv)
86 struct iwl_rxon_context *ctx;
88 for_each_context(priv, ctx) {
89 iwlagn_set_rxon_chain(priv, ctx);
90 if (ctx->active.rx_chain != ctx->staging.rx_chain)
91 iwlagn_commit_rxon(priv, ctx);
95 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
96 static void iwl_set_beacon_tim(struct iwl_priv *priv,
97 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
98 u8 *beacon, u32 frame_size)
100 u16 tim_idx;
101 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
104 * The index is relative to frame start but we start looking at the
105 * variable-length part of the beacon.
107 tim_idx = mgmt->u.beacon.variable - beacon;
109 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
110 while ((tim_idx < (frame_size - 2)) &&
111 (beacon[tim_idx] != WLAN_EID_TIM))
112 tim_idx += beacon[tim_idx+1] + 2;
114 /* If TIM field was found, set variables */
115 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
116 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
117 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
118 } else
119 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
122 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
124 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
125 struct iwl_host_cmd cmd = {
126 .id = REPLY_TX_BEACON,
127 .flags = CMD_SYNC,
129 struct ieee80211_tx_info *info;
130 u32 frame_size;
131 u32 rate_flags;
132 u32 rate;
135 * We have to set up the TX command, the TX Beacon command, and the
136 * beacon contents.
139 lockdep_assert_held(&priv->shrd->mutex);
141 if (!priv->beacon_ctx) {
142 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
143 return 0;
146 if (WARN_ON(!priv->beacon_skb))
147 return -EINVAL;
149 /* Allocate beacon command */
150 if (!priv->beacon_cmd)
151 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
152 tx_beacon_cmd = priv->beacon_cmd;
153 if (!tx_beacon_cmd)
154 return -ENOMEM;
156 frame_size = priv->beacon_skb->len;
158 /* Set up TX command fields */
159 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
160 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
161 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
162 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
163 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
165 /* Set up TX beacon command fields */
166 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
167 frame_size);
169 /* Set up packet rate and flags */
170 info = IEEE80211_SKB_CB(priv->beacon_skb);
173 * Let's set up the rate at least somewhat correctly;
174 * it will currently not actually be used by the uCode,
175 * it uses the broadcast station's rate instead.
177 if (info->control.rates[0].idx < 0 ||
178 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
179 rate = 0;
180 else
181 rate = info->control.rates[0].idx;
183 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
184 hw_params(priv).valid_tx_ant);
185 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
187 /* In mac80211, rates for 5 GHz start at 0 */
188 if (info->band == IEEE80211_BAND_5GHZ)
189 rate += IWL_FIRST_OFDM_RATE;
190 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
191 rate_flags |= RATE_MCS_CCK_MSK;
193 tx_beacon_cmd->tx.rate_n_flags =
194 iwl_hw_set_rate_n_flags(rate, rate_flags);
196 /* Submit command */
197 cmd.len[0] = sizeof(*tx_beacon_cmd);
198 cmd.data[0] = tx_beacon_cmd;
199 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
200 cmd.len[1] = frame_size;
201 cmd.data[1] = priv->beacon_skb->data;
202 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
204 return iwl_trans_send_cmd(trans(priv), &cmd);
207 static void iwl_bg_beacon_update(struct work_struct *work)
209 struct iwl_priv *priv =
210 container_of(work, struct iwl_priv, beacon_update);
211 struct sk_buff *beacon;
213 mutex_lock(&priv->shrd->mutex);
214 if (!priv->beacon_ctx) {
215 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
216 goto out;
219 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
221 * The ucode will send beacon notifications even in
222 * IBSS mode, but we don't want to process them. But
223 * we need to defer the type check to here due to
224 * requiring locking around the beacon_ctx access.
226 goto out;
229 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
230 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
231 if (!beacon) {
232 IWL_ERR(priv, "update beacon failed -- keeping old\n");
233 goto out;
236 /* new beacon skb is allocated every time; dispose previous.*/
237 dev_kfree_skb(priv->beacon_skb);
239 priv->beacon_skb = beacon;
241 iwlagn_send_beacon_cmd(priv);
242 out:
243 mutex_unlock(&priv->shrd->mutex);
246 static void iwl_bg_bt_runtime_config(struct work_struct *work)
248 struct iwl_priv *priv =
249 container_of(work, struct iwl_priv, bt_runtime_config);
251 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
252 return;
254 /* dont send host command if rf-kill is on */
255 if (!iwl_is_ready_rf(priv->shrd))
256 return;
257 iwlagn_send_advance_bt_config(priv);
260 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
262 struct iwl_priv *priv =
263 container_of(work, struct iwl_priv, bt_full_concurrency);
264 struct iwl_rxon_context *ctx;
266 mutex_lock(&priv->shrd->mutex);
268 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
269 goto out;
271 /* dont send host command if rf-kill is on */
272 if (!iwl_is_ready_rf(priv->shrd))
273 goto out;
275 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
276 priv->bt_full_concurrent ?
277 "full concurrency" : "3-wire");
280 * LQ & RXON updated cmds must be sent before BT Config cmd
281 * to avoid 3-wire collisions
283 for_each_context(priv, ctx) {
284 iwlagn_set_rxon_chain(priv, ctx);
285 iwlagn_commit_rxon(priv, ctx);
288 iwlagn_send_advance_bt_config(priv);
289 out:
290 mutex_unlock(&priv->shrd->mutex);
294 * iwl_bg_statistics_periodic - Timer callback to queue statistics
296 * This callback is provided in order to send a statistics request.
298 * This timer function is continually reset to execute within
299 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
300 * was received. We need to ensure we receive the statistics in order
301 * to update the temperature used for calibrating the TXPOWER.
303 static void iwl_bg_statistics_periodic(unsigned long data)
305 struct iwl_priv *priv = (struct iwl_priv *)data;
307 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
308 return;
310 /* dont send host command if rf-kill is on */
311 if (!iwl_is_ready_rf(priv->shrd))
312 return;
314 iwl_send_statistics_request(priv, CMD_ASYNC, false);
318 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
319 u32 start_idx, u32 num_events,
320 u32 mode)
322 u32 i;
323 u32 ptr; /* SRAM byte address of log data */
324 u32 ev, time, data; /* event log data */
325 unsigned long reg_flags;
327 if (mode == 0)
328 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
329 else
330 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
332 /* Make sure device is powered up for SRAM reads */
333 spin_lock_irqsave(&bus(priv)->reg_lock, reg_flags);
334 if (iwl_grab_nic_access(bus(priv))) {
335 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
336 return;
339 /* Set starting address; reads will auto-increment */
340 iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, ptr);
341 rmb();
344 * "time" is actually "data" for mode 0 (no timestamp).
345 * place event id # at far right for easier visual parsing.
347 for (i = 0; i < num_events; i++) {
348 ev = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
349 time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
350 if (mode == 0) {
351 trace_iwlwifi_dev_ucode_cont_event(priv,
352 0, time, ev);
353 } else {
354 data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
355 trace_iwlwifi_dev_ucode_cont_event(priv,
356 time, data, ev);
359 /* Allow device to power down */
360 iwl_release_nic_access(bus(priv));
361 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
364 static void iwl_continuous_event_trace(struct iwl_priv *priv)
366 u32 capacity; /* event log capacity in # entries */
367 u32 base; /* SRAM byte address of event log header */
368 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
369 u32 num_wraps; /* # times uCode wrapped to top of log */
370 u32 next_entry; /* index of next entry to be written by uCode */
372 base = priv->device_pointers.error_event_table;
373 if (iwlagn_hw_valid_rtc_data_addr(base)) {
374 capacity = iwl_read_targ_mem(bus(priv), base);
375 num_wraps = iwl_read_targ_mem(bus(priv),
376 base + (2 * sizeof(u32)));
377 mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32)));
378 next_entry = iwl_read_targ_mem(bus(priv),
379 base + (3 * sizeof(u32)));
380 } else
381 return;
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,
387 mode);
388 priv->event_log.non_wraps_count++;
389 } else {
390 if ((num_wraps - priv->event_log.num_wraps) > 1)
391 priv->event_log.wraps_more_count++;
392 else
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,
401 mode);
403 iwl_print_cont_event_trace(priv, base, 0,
404 next_entry, mode);
405 } else {
406 iwl_print_cont_event_trace(priv, base,
407 next_entry, capacity - next_entry,
408 mode);
410 iwl_print_cont_event_trace(priv, base, 0,
411 next_entry, mode);
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
424 * if enabled
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->shrd->status))
431 return;
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->shrd->status))
447 return;
449 /* do nothing if rf-kill is on */
450 if (!iwl_is_ready_rf(priv->shrd))
451 return;
453 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
454 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
457 /******************************************************************************
459 * uCode download functions
461 ******************************************************************************/
463 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
465 if (desc->v_addr)
466 dma_free_coherent(priv->bus->dev, desc->len,
467 desc->v_addr, desc->p_addr);
468 desc->v_addr = NULL;
469 desc->len = 0;
472 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
474 iwl_free_fw_desc(priv, &img->code);
475 iwl_free_fw_desc(priv, &img->data);
478 static void iwl_dealloc_ucode(struct iwl_priv *priv)
480 iwl_free_fw_img(priv, &priv->ucode_rt);
481 iwl_free_fw_img(priv, &priv->ucode_init);
482 iwl_free_fw_img(priv, &priv->ucode_wowlan);
485 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
486 const void *data, size_t len)
488 if (!len) {
489 desc->v_addr = NULL;
490 return -EINVAL;
493 desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
494 &desc->p_addr, GFP_KERNEL);
495 if (!desc->v_addr)
496 return -ENOMEM;
498 desc->len = len;
499 memcpy(desc->v_addr, data, len);
500 return 0;
503 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
505 int i;
508 * The default context is always valid,
509 * the PAN context depends on uCode.
511 priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
512 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
513 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
515 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
516 priv->contexts[i].ctxid = i;
518 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
519 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
520 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
521 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
522 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
523 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
524 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
525 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
526 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
527 BIT(NL80211_IFTYPE_ADHOC);
528 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
529 BIT(NL80211_IFTYPE_STATION);
530 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
531 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
532 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
533 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
535 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
536 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
537 REPLY_WIPAN_RXON_TIMING;
538 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
539 REPLY_WIPAN_RXON_ASSOC;
540 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
541 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
542 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
543 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
544 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
545 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
546 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
548 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
549 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
550 BIT(NL80211_IFTYPE_P2P_CLIENT) |
551 BIT(NL80211_IFTYPE_P2P_GO);
553 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
554 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
555 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
557 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
561 struct iwlagn_ucode_capabilities {
562 u32 max_probe_length;
563 u32 standard_phy_calibration_size;
564 u32 flags;
567 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
568 static int iwl_mac_setup_register(struct iwl_priv *priv,
569 struct iwlagn_ucode_capabilities *capa);
571 #define UCODE_EXPERIMENTAL_INDEX 100
572 #define UCODE_EXPERIMENTAL_TAG "exp"
574 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
576 const char *name_pre = priv->cfg->fw_name_pre;
577 char tag[8];
579 if (first) {
580 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
581 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
582 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
583 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
584 #endif
585 priv->fw_index = priv->cfg->ucode_api_max;
586 sprintf(tag, "%d", priv->fw_index);
587 } else {
588 priv->fw_index--;
589 sprintf(tag, "%d", priv->fw_index);
592 if (priv->fw_index < priv->cfg->ucode_api_min) {
593 IWL_ERR(priv, "no suitable firmware found!\n");
594 return -ENOENT;
597 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
599 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
600 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
601 ? "EXPERIMENTAL " : "",
602 priv->firmware_name);
604 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
605 priv->bus->dev,
606 GFP_KERNEL, priv, iwl_ucode_callback);
609 struct iwlagn_firmware_pieces {
610 const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
611 size_t inst_size, data_size, init_size, init_data_size,
612 wowlan_inst_size, wowlan_data_size;
614 u32 build;
616 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
617 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
620 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
621 const struct firmware *ucode_raw,
622 struct iwlagn_firmware_pieces *pieces)
624 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
625 u32 api_ver, hdr_size;
626 const u8 *src;
628 priv->ucode_ver = le32_to_cpu(ucode->ver);
629 api_ver = IWL_UCODE_API(priv->ucode_ver);
631 switch (api_ver) {
632 default:
633 hdr_size = 28;
634 if (ucode_raw->size < hdr_size) {
635 IWL_ERR(priv, "File size too small!\n");
636 return -EINVAL;
638 pieces->build = le32_to_cpu(ucode->u.v2.build);
639 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
640 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
641 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
642 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
643 src = ucode->u.v2.data;
644 break;
645 case 0:
646 case 1:
647 case 2:
648 hdr_size = 24;
649 if (ucode_raw->size < hdr_size) {
650 IWL_ERR(priv, "File size too small!\n");
651 return -EINVAL;
653 pieces->build = 0;
654 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
655 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
656 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
657 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
658 src = ucode->u.v1.data;
659 break;
662 /* Verify size of file vs. image size info in file's header */
663 if (ucode_raw->size != hdr_size + pieces->inst_size +
664 pieces->data_size + pieces->init_size +
665 pieces->init_data_size) {
667 IWL_ERR(priv,
668 "uCode file size %d does not match expected size\n",
669 (int)ucode_raw->size);
670 return -EINVAL;
673 pieces->inst = src;
674 src += pieces->inst_size;
675 pieces->data = src;
676 src += pieces->data_size;
677 pieces->init = src;
678 src += pieces->init_size;
679 pieces->init_data = src;
680 src += pieces->init_data_size;
682 return 0;
685 static int iwlagn_load_firmware(struct iwl_priv *priv,
686 const struct firmware *ucode_raw,
687 struct iwlagn_firmware_pieces *pieces,
688 struct iwlagn_ucode_capabilities *capa)
690 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
691 struct iwl_ucode_tlv *tlv;
692 size_t len = ucode_raw->size;
693 const u8 *data;
694 int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
695 int tmp;
696 u64 alternatives;
697 u32 tlv_len;
698 enum iwl_ucode_tlv_type tlv_type;
699 const u8 *tlv_data;
701 if (len < sizeof(*ucode)) {
702 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
703 return -EINVAL;
706 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
707 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
708 le32_to_cpu(ucode->magic));
709 return -EINVAL;
713 * Check which alternatives are present, and "downgrade"
714 * when the chosen alternative is not present, warning
715 * the user when that happens. Some files may not have
716 * any alternatives, so don't warn in that case.
718 alternatives = le64_to_cpu(ucode->alternatives);
719 tmp = wanted_alternative;
720 if (wanted_alternative > 63)
721 wanted_alternative = 63;
722 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
723 wanted_alternative--;
724 if (wanted_alternative && wanted_alternative != tmp)
725 IWL_WARN(priv,
726 "uCode alternative %d not available, choosing %d\n",
727 tmp, wanted_alternative);
729 priv->ucode_ver = le32_to_cpu(ucode->ver);
730 pieces->build = le32_to_cpu(ucode->build);
731 data = ucode->data;
733 len -= sizeof(*ucode);
735 while (len >= sizeof(*tlv)) {
736 u16 tlv_alt;
738 len -= sizeof(*tlv);
739 tlv = (void *)data;
741 tlv_len = le32_to_cpu(tlv->length);
742 tlv_type = le16_to_cpu(tlv->type);
743 tlv_alt = le16_to_cpu(tlv->alternative);
744 tlv_data = tlv->data;
746 if (len < tlv_len) {
747 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
748 len, tlv_len);
749 return -EINVAL;
751 len -= ALIGN(tlv_len, 4);
752 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
755 * Alternative 0 is always valid.
757 * Skip alternative TLVs that are not selected.
759 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
760 continue;
762 switch (tlv_type) {
763 case IWL_UCODE_TLV_INST:
764 pieces->inst = tlv_data;
765 pieces->inst_size = tlv_len;
766 break;
767 case IWL_UCODE_TLV_DATA:
768 pieces->data = tlv_data;
769 pieces->data_size = tlv_len;
770 break;
771 case IWL_UCODE_TLV_INIT:
772 pieces->init = tlv_data;
773 pieces->init_size = tlv_len;
774 break;
775 case IWL_UCODE_TLV_INIT_DATA:
776 pieces->init_data = tlv_data;
777 pieces->init_data_size = tlv_len;
778 break;
779 case IWL_UCODE_TLV_BOOT:
780 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
781 break;
782 case IWL_UCODE_TLV_PROBE_MAX_LEN:
783 if (tlv_len != sizeof(u32))
784 goto invalid_tlv_len;
785 capa->max_probe_length =
786 le32_to_cpup((__le32 *)tlv_data);
787 break;
788 case IWL_UCODE_TLV_PAN:
789 if (tlv_len)
790 goto invalid_tlv_len;
791 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
792 break;
793 case IWL_UCODE_TLV_FLAGS:
794 /* must be at least one u32 */
795 if (tlv_len < sizeof(u32))
796 goto invalid_tlv_len;
797 /* and a proper number of u32s */
798 if (tlv_len % sizeof(u32))
799 goto invalid_tlv_len;
801 * This driver only reads the first u32 as
802 * right now no more features are defined,
803 * if that changes then either the driver
804 * will not work with the new firmware, or
805 * it'll not take advantage of new features.
807 capa->flags = le32_to_cpup((__le32 *)tlv_data);
808 break;
809 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
810 if (tlv_len != sizeof(u32))
811 goto invalid_tlv_len;
812 pieces->init_evtlog_ptr =
813 le32_to_cpup((__le32 *)tlv_data);
814 break;
815 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
816 if (tlv_len != sizeof(u32))
817 goto invalid_tlv_len;
818 pieces->init_evtlog_size =
819 le32_to_cpup((__le32 *)tlv_data);
820 break;
821 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
822 if (tlv_len != sizeof(u32))
823 goto invalid_tlv_len;
824 pieces->init_errlog_ptr =
825 le32_to_cpup((__le32 *)tlv_data);
826 break;
827 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
828 if (tlv_len != sizeof(u32))
829 goto invalid_tlv_len;
830 pieces->inst_evtlog_ptr =
831 le32_to_cpup((__le32 *)tlv_data);
832 break;
833 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
834 if (tlv_len != sizeof(u32))
835 goto invalid_tlv_len;
836 pieces->inst_evtlog_size =
837 le32_to_cpup((__le32 *)tlv_data);
838 break;
839 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
840 if (tlv_len != sizeof(u32))
841 goto invalid_tlv_len;
842 pieces->inst_errlog_ptr =
843 le32_to_cpup((__le32 *)tlv_data);
844 break;
845 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
846 if (tlv_len)
847 goto invalid_tlv_len;
848 priv->enhance_sensitivity_table = true;
849 break;
850 case IWL_UCODE_TLV_WOWLAN_INST:
851 pieces->wowlan_inst = tlv_data;
852 pieces->wowlan_inst_size = tlv_len;
853 break;
854 case IWL_UCODE_TLV_WOWLAN_DATA:
855 pieces->wowlan_data = tlv_data;
856 pieces->wowlan_data_size = tlv_len;
857 break;
858 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
859 if (tlv_len != sizeof(u32))
860 goto invalid_tlv_len;
861 capa->standard_phy_calibration_size =
862 le32_to_cpup((__le32 *)tlv_data);
863 break;
864 default:
865 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
866 break;
870 if (len) {
871 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
872 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
873 return -EINVAL;
876 return 0;
878 invalid_tlv_len:
879 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
880 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
882 return -EINVAL;
886 * iwl_ucode_callback - callback when firmware was loaded
888 * If loaded successfully, copies the firmware into buffers
889 * for the card to fetch (via DMA).
891 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
893 struct iwl_priv *priv = context;
894 struct iwl_ucode_header *ucode;
895 int err;
896 struct iwlagn_firmware_pieces pieces;
897 const unsigned int api_max = priv->cfg->ucode_api_max;
898 unsigned int api_ok = priv->cfg->ucode_api_ok;
899 const unsigned int api_min = priv->cfg->ucode_api_min;
900 u32 api_ver;
901 char buildstr[25];
902 u32 build;
903 struct iwlagn_ucode_capabilities ucode_capa = {
904 .max_probe_length = 200,
905 .standard_phy_calibration_size =
906 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
909 if (!api_ok)
910 api_ok = api_max;
912 memset(&pieces, 0, sizeof(pieces));
914 if (!ucode_raw) {
915 if (priv->fw_index <= api_ok)
916 IWL_ERR(priv,
917 "request for firmware file '%s' failed.\n",
918 priv->firmware_name);
919 goto try_again;
922 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
923 priv->firmware_name, ucode_raw->size);
925 /* Make sure that we got at least the API version number */
926 if (ucode_raw->size < 4) {
927 IWL_ERR(priv, "File size way too small!\n");
928 goto try_again;
931 /* Data from ucode file: header followed by uCode images */
932 ucode = (struct iwl_ucode_header *)ucode_raw->data;
934 if (ucode->ver)
935 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
936 else
937 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
938 &ucode_capa);
940 if (err)
941 goto try_again;
943 api_ver = IWL_UCODE_API(priv->ucode_ver);
944 build = pieces.build;
947 * api_ver should match the api version forming part of the
948 * firmware filename ... but we don't check for that and only rely
949 * on the API version read from firmware header from here on forward
951 /* no api version check required for experimental uCode */
952 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
953 if (api_ver < api_min || api_ver > api_max) {
954 IWL_ERR(priv,
955 "Driver unable to support your firmware API. "
956 "Driver supports v%u, firmware is v%u.\n",
957 api_max, api_ver);
958 goto try_again;
961 if (api_ver < api_ok) {
962 if (api_ok != api_max)
963 IWL_ERR(priv, "Firmware has old API version, "
964 "expected v%u through v%u, got v%u.\n",
965 api_ok, api_max, api_ver);
966 else
967 IWL_ERR(priv, "Firmware has old API version, "
968 "expected v%u, got v%u.\n",
969 api_max, api_ver);
970 IWL_ERR(priv, "New firmware can be obtained from "
971 "http://www.intellinuxwireless.org/.\n");
975 if (build)
976 sprintf(buildstr, " build %u%s", build,
977 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
978 ? " (EXP)" : "");
979 else
980 buildstr[0] = '\0';
982 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
983 IWL_UCODE_MAJOR(priv->ucode_ver),
984 IWL_UCODE_MINOR(priv->ucode_ver),
985 IWL_UCODE_API(priv->ucode_ver),
986 IWL_UCODE_SERIAL(priv->ucode_ver),
987 buildstr);
989 snprintf(priv->hw->wiphy->fw_version,
990 sizeof(priv->hw->wiphy->fw_version),
991 "%u.%u.%u.%u%s",
992 IWL_UCODE_MAJOR(priv->ucode_ver),
993 IWL_UCODE_MINOR(priv->ucode_ver),
994 IWL_UCODE_API(priv->ucode_ver),
995 IWL_UCODE_SERIAL(priv->ucode_ver),
996 buildstr);
999 * For any of the failures below (before allocating pci memory)
1000 * we will try to load a version with a smaller API -- maybe the
1001 * user just got a corrupted version of the latest API.
1004 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1005 priv->ucode_ver);
1006 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1007 pieces.inst_size);
1008 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1009 pieces.data_size);
1010 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1011 pieces.init_size);
1012 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1013 pieces.init_data_size);
1015 /* Verify that uCode images will fit in card's SRAM */
1016 if (pieces.inst_size > hw_params(priv).max_inst_size) {
1017 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1018 pieces.inst_size);
1019 goto try_again;
1022 if (pieces.data_size > hw_params(priv).max_data_size) {
1023 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1024 pieces.data_size);
1025 goto try_again;
1028 if (pieces.init_size > hw_params(priv).max_inst_size) {
1029 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1030 pieces.init_size);
1031 goto try_again;
1034 if (pieces.init_data_size > hw_params(priv).max_data_size) {
1035 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1036 pieces.init_data_size);
1037 goto try_again;
1040 /* Allocate ucode buffers for card's bus-master loading ... */
1042 /* Runtime instructions and 2 copies of data:
1043 * 1) unmodified from disk
1044 * 2) backup cache for save/restore during power-downs */
1045 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1046 pieces.inst, pieces.inst_size))
1047 goto err_pci_alloc;
1048 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1049 pieces.data, pieces.data_size))
1050 goto err_pci_alloc;
1052 /* Initialization instructions and data */
1053 if (pieces.init_size && pieces.init_data_size) {
1054 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1055 pieces.init, pieces.init_size))
1056 goto err_pci_alloc;
1057 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1058 pieces.init_data, pieces.init_data_size))
1059 goto err_pci_alloc;
1062 /* WoWLAN instructions and data */
1063 if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1064 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1065 pieces.wowlan_inst,
1066 pieces.wowlan_inst_size))
1067 goto err_pci_alloc;
1068 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1069 pieces.wowlan_data,
1070 pieces.wowlan_data_size))
1071 goto err_pci_alloc;
1074 /* Now that we can no longer fail, copy information */
1077 * The (size - 16) / 12 formula is based on the information recorded
1078 * for each event, which is of mode 1 (including timestamp) for all
1079 * new microcodes that include this information.
1081 priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1082 if (pieces.init_evtlog_size)
1083 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1084 else
1085 priv->init_evtlog_size =
1086 priv->cfg->base_params->max_event_log_size;
1087 priv->init_errlog_ptr = pieces.init_errlog_ptr;
1088 priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1089 if (pieces.inst_evtlog_size)
1090 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1091 else
1092 priv->inst_evtlog_size =
1093 priv->cfg->base_params->max_event_log_size;
1094 priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1096 priv->new_scan_threshold_behaviour =
1097 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1099 if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1100 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1103 * if not PAN, then don't support P2P -- might be a uCode
1104 * packaging bug or due to the eeprom check above
1106 if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1107 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1109 if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1110 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1111 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1112 } else {
1113 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1114 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1118 * figure out the offset of chain noise reset and gain commands
1119 * base on the size of standard phy calibration commands table size
1121 if (ucode_capa.standard_phy_calibration_size >
1122 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1123 ucode_capa.standard_phy_calibration_size =
1124 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1126 priv->phy_calib_chain_noise_reset_cmd =
1127 ucode_capa.standard_phy_calibration_size;
1128 priv->phy_calib_chain_noise_gain_cmd =
1129 ucode_capa.standard_phy_calibration_size + 1;
1131 /* initialize all valid contexts */
1132 iwl_init_context(priv, ucode_capa.flags);
1134 /**************************************************
1135 * This is still part of probe() in a sense...
1137 * 9. Setup and register with mac80211 and debugfs
1138 **************************************************/
1139 err = iwl_mac_setup_register(priv, &ucode_capa);
1140 if (err)
1141 goto out_unbind;
1143 err = iwl_dbgfs_register(priv, DRV_NAME);
1144 if (err)
1145 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1147 /* We have our copies now, allow OS release its copies */
1148 release_firmware(ucode_raw);
1149 complete(&priv->firmware_loading_complete);
1150 return;
1152 try_again:
1153 /* try next, if any */
1154 if (iwl_request_firmware(priv, false))
1155 goto out_unbind;
1156 release_firmware(ucode_raw);
1157 return;
1159 err_pci_alloc:
1160 IWL_ERR(priv, "failed to allocate pci memory\n");
1161 iwl_dealloc_ucode(priv);
1162 out_unbind:
1163 complete(&priv->firmware_loading_complete);
1164 device_release_driver(priv->bus->dev);
1165 release_firmware(ucode_raw);
1168 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1170 struct iwl_ct_kill_config cmd;
1171 struct iwl_ct_kill_throttling_config adv_cmd;
1172 unsigned long flags;
1173 int ret = 0;
1175 spin_lock_irqsave(&priv->shrd->lock, flags);
1176 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
1177 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1178 spin_unlock_irqrestore(&priv->shrd->lock, flags);
1179 priv->thermal_throttle.ct_kill_toggle = false;
1181 if (priv->cfg->base_params->support_ct_kill_exit) {
1182 adv_cmd.critical_temperature_enter =
1183 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1184 adv_cmd.critical_temperature_exit =
1185 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1187 ret = iwl_trans_send_cmd_pdu(trans(priv),
1188 REPLY_CT_KILL_CONFIG_CMD,
1189 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1190 if (ret)
1191 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1192 else
1193 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1194 "succeeded, critical temperature enter is %d,"
1195 "exit is %d\n",
1196 hw_params(priv).ct_kill_threshold,
1197 hw_params(priv).ct_kill_exit_threshold);
1198 } else {
1199 cmd.critical_temperature_R =
1200 cpu_to_le32(hw_params(priv).ct_kill_threshold);
1202 ret = iwl_trans_send_cmd_pdu(trans(priv),
1203 REPLY_CT_KILL_CONFIG_CMD,
1204 CMD_SYNC, sizeof(cmd), &cmd);
1205 if (ret)
1206 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1207 else
1208 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1209 "succeeded, "
1210 "critical temperature is %d\n",
1211 hw_params(priv).ct_kill_threshold);
1215 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1217 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1218 struct iwl_host_cmd cmd = {
1219 .id = CALIBRATION_CFG_CMD,
1220 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1221 .data = { &calib_cfg_cmd, },
1224 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1225 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
1226 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1228 return iwl_trans_send_cmd(trans(priv), &cmd);
1232 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1234 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1235 .valid = cpu_to_le32(valid_tx_ant),
1238 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1239 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1240 return iwl_trans_send_cmd_pdu(trans(priv),
1241 TX_ANT_CONFIGURATION_CMD,
1242 CMD_SYNC,
1243 sizeof(struct iwl_tx_ant_config_cmd),
1244 &tx_ant_cmd);
1245 } else {
1246 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1247 return -EOPNOTSUPP;
1252 * iwl_alive_start - called after REPLY_ALIVE notification received
1253 * from protocol/runtime uCode (initialization uCode's
1254 * Alive gets handled by iwl_init_alive_start()).
1256 int iwl_alive_start(struct iwl_priv *priv)
1258 int ret = 0;
1259 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1261 /*TODO: this should go to the transport layer */
1262 iwl_reset_ict(trans(priv));
1264 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1266 /* After the ALIVE response, we can send host commands to the uCode */
1267 set_bit(STATUS_ALIVE, &priv->shrd->status);
1269 /* Enable watchdog to monitor the driver tx queues */
1270 iwl_setup_watchdog(priv);
1272 if (iwl_is_rfkill(priv->shrd))
1273 return -ERFKILL;
1275 /* download priority table before any calibration request */
1276 if (priv->cfg->bt_params &&
1277 priv->cfg->bt_params->advanced_bt_coexist) {
1278 /* Configure Bluetooth device coexistence support */
1279 if (priv->cfg->bt_params->bt_sco_disable)
1280 priv->bt_enable_pspoll = false;
1281 else
1282 priv->bt_enable_pspoll = true;
1284 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1285 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1286 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1287 iwlagn_send_advance_bt_config(priv);
1288 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1289 priv->cur_rssi_ctx = NULL;
1291 iwlagn_send_prio_tbl(priv);
1293 /* FIXME: w/a to force change uCode BT state machine */
1294 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1295 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1296 if (ret)
1297 return ret;
1298 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1299 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1300 if (ret)
1301 return ret;
1302 } else {
1304 * default is 2-wire BT coexexistence support
1306 iwl_send_bt_config(priv);
1309 if (hw_params(priv).calib_rt_cfg)
1310 iwlagn_send_calib_cfg_rt(priv,
1311 hw_params(priv).calib_rt_cfg);
1313 ieee80211_wake_queues(priv->hw);
1315 priv->active_rate = IWL_RATES_MASK;
1317 /* Configure Tx antenna selection based on H/W config */
1318 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1320 if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1321 struct iwl_rxon_cmd *active_rxon =
1322 (struct iwl_rxon_cmd *)&ctx->active;
1323 /* apply any changes in staging */
1324 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1325 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1326 } else {
1327 struct iwl_rxon_context *tmp;
1328 /* Initialize our rx_config data */
1329 for_each_context(priv, tmp)
1330 iwl_connection_init_rx_config(priv, tmp);
1332 iwlagn_set_rxon_chain(priv, ctx);
1335 if (!priv->shrd->wowlan) {
1336 /* WoWLAN ucode will not reply in the same way, skip it */
1337 iwl_reset_run_time_calib(priv);
1340 set_bit(STATUS_READY, &priv->shrd->status);
1342 /* Configure the adapter for unassociated operation */
1343 ret = iwlagn_commit_rxon(priv, ctx);
1344 if (ret)
1345 return ret;
1347 /* At this point, the NIC is initialized and operational */
1348 iwl_rf_kill_ct_config(priv);
1350 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1352 return iwl_power_update_mode(priv, true);
1355 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1357 static void __iwl_down(struct iwl_priv *priv)
1359 int exit_pending;
1361 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1363 iwl_scan_cancel_timeout(priv, 200);
1366 * If active, scanning won't cancel it, so say it expired.
1367 * No race since we hold the mutex here and a new one
1368 * can't come in at this time.
1370 ieee80211_remain_on_channel_expired(priv->hw);
1372 exit_pending =
1373 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1375 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1376 * to prevent rearm timer */
1377 del_timer_sync(&priv->watchdog);
1379 iwl_clear_ucode_stations(priv, NULL);
1380 iwl_dealloc_bcast_stations(priv);
1381 iwl_clear_driver_stations(priv);
1383 /* reset BT coex data */
1384 priv->bt_status = 0;
1385 priv->cur_rssi_ctx = NULL;
1386 priv->bt_is_sco = 0;
1387 if (priv->cfg->bt_params)
1388 priv->bt_traffic_load =
1389 priv->cfg->bt_params->bt_init_traffic_load;
1390 else
1391 priv->bt_traffic_load = 0;
1392 priv->bt_full_concurrent = false;
1393 priv->bt_ci_compliance = 0;
1395 /* Wipe out the EXIT_PENDING status bit if we are not actually
1396 * exiting the module */
1397 if (!exit_pending)
1398 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1400 if (priv->mac80211_registered)
1401 ieee80211_stop_queues(priv->hw);
1403 iwl_trans_stop_device(trans(priv));
1405 /* Clear out all status bits but a few that are stable across reset */
1406 priv->shrd->status &=
1407 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1408 STATUS_RF_KILL_HW |
1409 test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1410 STATUS_GEO_CONFIGURED |
1411 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1412 STATUS_FW_ERROR |
1413 test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1414 STATUS_EXIT_PENDING;
1416 dev_kfree_skb(priv->beacon_skb);
1417 priv->beacon_skb = NULL;
1420 static void iwl_down(struct iwl_priv *priv)
1422 mutex_lock(&priv->shrd->mutex);
1423 __iwl_down(priv);
1424 mutex_unlock(&priv->shrd->mutex);
1426 iwl_cancel_deferred_work(priv);
1429 #define MAX_HW_RESTARTS 5
1431 static int __iwl_up(struct iwl_priv *priv)
1433 struct iwl_rxon_context *ctx;
1434 int ret;
1436 lockdep_assert_held(&priv->shrd->mutex);
1438 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
1439 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1440 return -EIO;
1443 for_each_context(priv, ctx) {
1444 ret = iwlagn_alloc_bcast_station(priv, ctx);
1445 if (ret) {
1446 iwl_dealloc_bcast_stations(priv);
1447 return ret;
1451 ret = iwlagn_run_init_ucode(priv);
1452 if (ret) {
1453 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1454 goto error;
1457 ret = iwlagn_load_ucode_wait_alive(priv,
1458 &priv->ucode_rt,
1459 IWL_UCODE_REGULAR);
1460 if (ret) {
1461 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1462 goto error;
1465 ret = iwl_alive_start(priv);
1466 if (ret)
1467 goto error;
1468 return 0;
1470 error:
1471 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1472 __iwl_down(priv);
1473 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1475 IWL_ERR(priv, "Unable to initialize device.\n");
1476 return ret;
1480 /*****************************************************************************
1482 * Workqueue callbacks
1484 *****************************************************************************/
1486 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1488 struct iwl_priv *priv = container_of(work, struct iwl_priv,
1489 run_time_calib_work);
1491 mutex_lock(&priv->shrd->mutex);
1493 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1494 test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1495 mutex_unlock(&priv->shrd->mutex);
1496 return;
1499 if (priv->start_calib) {
1500 iwl_chain_noise_calibration(priv);
1501 iwl_sensitivity_calibration(priv);
1504 mutex_unlock(&priv->shrd->mutex);
1507 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1509 struct iwl_rxon_context *ctx;
1510 bool bt_full_concurrent;
1511 u8 bt_ci_compliance;
1512 u8 bt_load;
1513 u8 bt_status;
1514 bool bt_is_sco;
1516 lockdep_assert_held(&priv->shrd->mutex);
1518 for_each_context(priv, ctx)
1519 ctx->vif = NULL;
1520 priv->is_open = 0;
1523 * __iwl_down() will clear the BT status variables,
1524 * which is correct, but when we restart we really
1525 * want to keep them so restore them afterwards.
1527 * The restart process will later pick them up and
1528 * re-configure the hw when we reconfigure the BT
1529 * command.
1531 bt_full_concurrent = priv->bt_full_concurrent;
1532 bt_ci_compliance = priv->bt_ci_compliance;
1533 bt_load = priv->bt_traffic_load;
1534 bt_status = priv->bt_status;
1535 bt_is_sco = priv->bt_is_sco;
1537 __iwl_down(priv);
1539 priv->bt_full_concurrent = bt_full_concurrent;
1540 priv->bt_ci_compliance = bt_ci_compliance;
1541 priv->bt_traffic_load = bt_load;
1542 priv->bt_status = bt_status;
1543 priv->bt_is_sco = bt_is_sco;
1546 static void iwl_bg_restart(struct work_struct *data)
1548 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1550 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1551 return;
1553 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1554 mutex_lock(&priv->shrd->mutex);
1555 iwlagn_prepare_restart(priv);
1556 mutex_unlock(&priv->shrd->mutex);
1557 iwl_cancel_deferred_work(priv);
1558 ieee80211_restart_hw(priv->hw);
1559 } else {
1560 WARN_ON(1);
1564 /*****************************************************************************
1566 * mac80211 entry point functions
1568 *****************************************************************************/
1570 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
1572 .max = 1,
1573 .types = BIT(NL80211_IFTYPE_STATION),
1576 .max = 1,
1577 .types = BIT(NL80211_IFTYPE_AP),
1581 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
1583 .max = 2,
1584 .types = BIT(NL80211_IFTYPE_STATION),
1588 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
1590 .max = 1,
1591 .types = BIT(NL80211_IFTYPE_STATION),
1594 .max = 1,
1595 .types = BIT(NL80211_IFTYPE_P2P_GO) |
1596 BIT(NL80211_IFTYPE_AP),
1600 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
1602 .max = 2,
1603 .types = BIT(NL80211_IFTYPE_STATION),
1606 .max = 1,
1607 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
1611 static const struct ieee80211_iface_combination
1612 iwlagn_iface_combinations_dualmode[] = {
1613 { .num_different_channels = 1,
1614 .max_interfaces = 2,
1615 .beacon_int_infra_match = true,
1616 .limits = iwlagn_sta_ap_limits,
1617 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
1619 { .num_different_channels = 1,
1620 .max_interfaces = 2,
1621 .limits = iwlagn_2sta_limits,
1622 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
1626 static const struct ieee80211_iface_combination
1627 iwlagn_iface_combinations_p2p[] = {
1628 { .num_different_channels = 1,
1629 .max_interfaces = 2,
1630 .beacon_int_infra_match = true,
1631 .limits = iwlagn_p2p_sta_go_limits,
1632 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
1634 { .num_different_channels = 1,
1635 .max_interfaces = 2,
1636 .limits = iwlagn_p2p_2sta_limits,
1637 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
1642 * Not a mac80211 entry point function, but it fits in with all the
1643 * other mac80211 functions grouped here.
1645 static int iwl_mac_setup_register(struct iwl_priv *priv,
1646 struct iwlagn_ucode_capabilities *capa)
1648 int ret;
1649 struct ieee80211_hw *hw = priv->hw;
1650 struct iwl_rxon_context *ctx;
1652 hw->rate_control_algorithm = "iwl-agn-rs";
1654 /* Tell mac80211 our characteristics */
1655 hw->flags = IEEE80211_HW_SIGNAL_DBM |
1656 IEEE80211_HW_AMPDU_AGGREGATION |
1657 IEEE80211_HW_NEED_DTIM_PERIOD |
1658 IEEE80211_HW_SPECTRUM_MGMT |
1659 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
1662 * Including the following line will crash some AP's. This
1663 * workaround removes the stimulus which causes the crash until
1664 * the AP software can be fixed.
1665 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1668 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1669 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1671 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
1672 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1673 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
1675 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
1676 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
1678 hw->sta_data_size = sizeof(struct iwl_station_priv);
1679 hw->vif_data_size = sizeof(struct iwl_vif_priv);
1681 for_each_context(priv, ctx) {
1682 hw->wiphy->interface_modes |= ctx->interface_modes;
1683 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
1686 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1688 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
1689 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
1690 hw->wiphy->n_iface_combinations =
1691 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
1692 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
1693 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
1694 hw->wiphy->n_iface_combinations =
1695 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
1698 hw->wiphy->max_remain_on_channel_duration = 1000;
1700 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
1701 WIPHY_FLAG_DISABLE_BEACON_HINTS |
1702 WIPHY_FLAG_IBSS_RSN;
1704 if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
1705 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
1706 WIPHY_WOWLAN_DISCONNECT |
1707 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1708 WIPHY_WOWLAN_RFKILL_RELEASE;
1709 if (!iwlagn_mod_params.sw_crypto)
1710 hw->wiphy->wowlan.flags |=
1711 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1712 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
1714 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
1715 hw->wiphy->wowlan.pattern_min_len =
1716 IWLAGN_WOWLAN_MIN_PATTERN_LEN;
1717 hw->wiphy->wowlan.pattern_max_len =
1718 IWLAGN_WOWLAN_MAX_PATTERN_LEN;
1721 if (iwlagn_mod_params.power_save)
1722 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
1723 else
1724 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
1726 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1727 /* we create the 802.11 header and a zero-length SSID element */
1728 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
1730 /* Default value; 4 EDCA QOS priorities */
1731 hw->queues = 4;
1733 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1735 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1736 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1737 &priv->bands[IEEE80211_BAND_2GHZ];
1738 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1739 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1740 &priv->bands[IEEE80211_BAND_5GHZ];
1742 iwl_leds_init(priv);
1744 ret = ieee80211_register_hw(priv->hw);
1745 if (ret) {
1746 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1747 return ret;
1749 priv->mac80211_registered = 1;
1751 return 0;
1755 static int iwlagn_mac_start(struct ieee80211_hw *hw)
1757 struct iwl_priv *priv = hw->priv;
1758 int ret;
1760 IWL_DEBUG_MAC80211(priv, "enter\n");
1762 /* we should be verifying the device is ready to be opened */
1763 mutex_lock(&priv->shrd->mutex);
1764 ret = __iwl_up(priv);
1765 mutex_unlock(&priv->shrd->mutex);
1766 if (ret)
1767 return ret;
1769 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1771 /* Now we should be done, and the READY bit should be set. */
1772 if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
1773 ret = -EIO;
1775 iwlagn_led_enable(priv);
1777 priv->is_open = 1;
1778 IWL_DEBUG_MAC80211(priv, "leave\n");
1779 return 0;
1782 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
1784 struct iwl_priv *priv = hw->priv;
1786 IWL_DEBUG_MAC80211(priv, "enter\n");
1788 if (!priv->is_open)
1789 return;
1791 priv->is_open = 0;
1793 iwl_down(priv);
1795 flush_workqueue(priv->shrd->workqueue);
1797 /* User space software may expect getting rfkill changes
1798 * even if interface is down */
1799 iwl_write32(bus(priv), CSR_INT, 0xFFFFFFFF);
1800 iwl_enable_rfkill_int(priv);
1802 IWL_DEBUG_MAC80211(priv, "leave\n");
1805 #ifdef CONFIG_PM_SLEEP
1806 static int iwlagn_send_patterns(struct iwl_priv *priv,
1807 struct cfg80211_wowlan *wowlan)
1809 struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1810 struct iwl_host_cmd cmd = {
1811 .id = REPLY_WOWLAN_PATTERNS,
1812 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1813 .flags = CMD_SYNC,
1815 int i, err;
1817 if (!wowlan->n_patterns)
1818 return 0;
1820 cmd.len[0] = sizeof(*pattern_cmd) +
1821 wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1823 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1824 if (!pattern_cmd)
1825 return -ENOMEM;
1827 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1829 for (i = 0; i < wowlan->n_patterns; i++) {
1830 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1832 memcpy(&pattern_cmd->patterns[i].mask,
1833 wowlan->patterns[i].mask, mask_len);
1834 memcpy(&pattern_cmd->patterns[i].pattern,
1835 wowlan->patterns[i].pattern,
1836 wowlan->patterns[i].pattern_len);
1837 pattern_cmd->patterns[i].mask_size = mask_len;
1838 pattern_cmd->patterns[i].pattern_size =
1839 wowlan->patterns[i].pattern_len;
1842 cmd.data[0] = pattern_cmd;
1843 err = iwl_trans_send_cmd(trans(priv), &cmd);
1844 kfree(pattern_cmd);
1845 return err;
1847 #endif
1849 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
1850 struct ieee80211_vif *vif,
1851 struct cfg80211_gtk_rekey_data *data)
1853 struct iwl_priv *priv = hw->priv;
1855 if (iwlagn_mod_params.sw_crypto)
1856 return;
1858 mutex_lock(&priv->shrd->mutex);
1860 if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
1861 goto out;
1863 memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
1864 memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
1865 priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
1866 priv->have_rekey_data = true;
1868 out:
1869 mutex_unlock(&priv->shrd->mutex);
1872 struct wowlan_key_data {
1873 struct iwl_rxon_context *ctx;
1874 struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
1875 struct iwlagn_wowlan_tkip_params_cmd *tkip;
1876 const u8 *bssid;
1877 bool error, use_rsc_tsc, use_tkip;
1880 #ifdef CONFIG_PM_SLEEP
1881 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
1883 int i;
1885 for (i = 0; i < IWLAGN_P1K_SIZE; i++)
1886 out[i] = cpu_to_le16(p1k[i]);
1889 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
1890 struct ieee80211_vif *vif,
1891 struct ieee80211_sta *sta,
1892 struct ieee80211_key_conf *key,
1893 void *_data)
1895 struct iwl_priv *priv = hw->priv;
1896 struct wowlan_key_data *data = _data;
1897 struct iwl_rxon_context *ctx = data->ctx;
1898 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
1899 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
1900 struct iwlagn_p1k_cache *rx_p1ks;
1901 u8 *rx_mic_key;
1902 struct ieee80211_key_seq seq;
1903 u32 cur_rx_iv32 = 0;
1904 u16 p1k[IWLAGN_P1K_SIZE];
1905 int ret, i;
1907 mutex_lock(&priv->shrd->mutex);
1909 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1910 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
1911 !sta && !ctx->key_mapping_keys)
1912 ret = iwl_set_default_wep_key(priv, ctx, key);
1913 else
1914 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
1916 if (ret) {
1917 IWL_ERR(priv, "Error setting key during suspend!\n");
1918 data->error = true;
1921 switch (key->cipher) {
1922 case WLAN_CIPHER_SUITE_TKIP:
1923 if (sta) {
1924 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
1925 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
1927 rx_p1ks = data->tkip->rx_uni;
1929 ieee80211_get_key_tx_seq(key, &seq);
1930 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
1931 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
1933 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
1934 iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
1936 memcpy(data->tkip->mic_keys.tx,
1937 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
1938 IWLAGN_MIC_KEY_SIZE);
1940 rx_mic_key = data->tkip->mic_keys.rx_unicast;
1941 } else {
1942 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
1943 rx_p1ks = data->tkip->rx_multi;
1944 rx_mic_key = data->tkip->mic_keys.rx_mcast;
1948 * For non-QoS this relies on the fact that both the uCode and
1949 * mac80211 use TID 0 (as they need to to avoid replay attacks)
1950 * for checking the IV in the frames.
1952 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1953 ieee80211_get_key_rx_seq(key, i, &seq);
1954 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
1955 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
1956 /* wrapping isn't allowed, AP must rekey */
1957 if (seq.tkip.iv32 > cur_rx_iv32)
1958 cur_rx_iv32 = seq.tkip.iv32;
1961 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
1962 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
1963 ieee80211_get_tkip_rx_p1k(key, data->bssid,
1964 cur_rx_iv32 + 1, p1k);
1965 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
1967 memcpy(rx_mic_key,
1968 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
1969 IWLAGN_MIC_KEY_SIZE);
1971 data->use_tkip = true;
1972 data->use_rsc_tsc = true;
1973 break;
1974 case WLAN_CIPHER_SUITE_CCMP:
1975 if (sta) {
1976 u8 *pn = seq.ccmp.pn;
1978 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
1979 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
1981 ieee80211_get_key_tx_seq(key, &seq);
1982 aes_tx_sc->pn = cpu_to_le64(
1983 (u64)pn[5] |
1984 ((u64)pn[4] << 8) |
1985 ((u64)pn[3] << 16) |
1986 ((u64)pn[2] << 24) |
1987 ((u64)pn[1] << 32) |
1988 ((u64)pn[0] << 40));
1989 } else
1990 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
1993 * For non-QoS this relies on the fact that both the uCode and
1994 * mac80211 use TID 0 for checking the IV in the frames.
1996 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
1997 u8 *pn = seq.ccmp.pn;
1999 ieee80211_get_key_rx_seq(key, i, &seq);
2000 aes_sc->pn = cpu_to_le64(
2001 (u64)pn[5] |
2002 ((u64)pn[4] << 8) |
2003 ((u64)pn[3] << 16) |
2004 ((u64)pn[2] << 24) |
2005 ((u64)pn[1] << 32) |
2006 ((u64)pn[0] << 40));
2008 data->use_rsc_tsc = true;
2009 break;
2012 mutex_unlock(&priv->shrd->mutex);
2015 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2016 struct cfg80211_wowlan *wowlan)
2018 struct iwl_priv *priv = hw->priv;
2019 struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2020 struct iwl_rxon_cmd rxon;
2021 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2022 struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2023 struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2024 struct wowlan_key_data key_data = {
2025 .ctx = ctx,
2026 .bssid = ctx->active.bssid_addr,
2027 .use_rsc_tsc = false,
2028 .tkip = &tkip_cmd,
2029 .use_tkip = false,
2031 int ret, i;
2032 u16 seq;
2034 if (WARN_ON(!wowlan))
2035 return -EINVAL;
2037 mutex_lock(&priv->shrd->mutex);
2039 /* Don't attempt WoWLAN when not associated, tear down instead. */
2040 if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2041 !iwl_is_associated_ctx(ctx)) {
2042 ret = 1;
2043 goto out;
2046 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2047 if (!key_data.rsc_tsc) {
2048 ret = -ENOMEM;
2049 goto out;
2052 memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2055 * We know the last used seqno, and the uCode expects to know that
2056 * one, it will increment before TX.
2058 seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2059 wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2062 * For QoS counters, we store the one to use next, so subtract 0x10
2063 * since the uCode will add 0x10 before using the value.
2065 for (i = 0; i < 8; i++) {
2066 seq = priv->shrd->tid_data[IWL_AP_ID][i].seq_number;
2067 seq -= 0x10;
2068 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2071 if (wowlan->disconnect)
2072 wakeup_filter_cmd.enabled |=
2073 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2074 IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2075 if (wowlan->magic_pkt)
2076 wakeup_filter_cmd.enabled |=
2077 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2078 if (wowlan->gtk_rekey_failure)
2079 wakeup_filter_cmd.enabled |=
2080 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2081 if (wowlan->eap_identity_req)
2082 wakeup_filter_cmd.enabled |=
2083 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2084 if (wowlan->four_way_handshake)
2085 wakeup_filter_cmd.enabled |=
2086 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2087 if (wowlan->rfkill_release)
2088 wakeup_filter_cmd.enabled |=
2089 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2090 if (wowlan->n_patterns)
2091 wakeup_filter_cmd.enabled |=
2092 cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2094 iwl_scan_cancel_timeout(priv, 200);
2096 memcpy(&rxon, &ctx->active, sizeof(rxon));
2098 iwl_trans_stop_device(trans(priv));
2100 priv->shrd->wowlan = true;
2102 ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2103 IWL_UCODE_WOWLAN);
2104 if (ret)
2105 goto error;
2107 /* now configure WoWLAN ucode */
2108 ret = iwl_alive_start(priv);
2109 if (ret)
2110 goto error;
2112 memcpy(&ctx->staging, &rxon, sizeof(rxon));
2113 ret = iwlagn_commit_rxon(priv, ctx);
2114 if (ret)
2115 goto error;
2117 ret = iwl_power_update_mode(priv, true);
2118 if (ret)
2119 goto error;
2121 if (!iwlagn_mod_params.sw_crypto) {
2122 /* mark all keys clear */
2123 priv->ucode_key_table = 0;
2124 ctx->key_mapping_keys = 0;
2127 * This needs to be unlocked due to lock ordering
2128 * constraints. Since we're in the suspend path
2129 * that isn't really a problem though.
2131 mutex_unlock(&priv->shrd->mutex);
2132 ieee80211_iter_keys(priv->hw, ctx->vif,
2133 iwlagn_wowlan_program_keys,
2134 &key_data);
2135 mutex_lock(&priv->shrd->mutex);
2136 if (key_data.error) {
2137 ret = -EIO;
2138 goto error;
2141 if (key_data.use_rsc_tsc) {
2142 struct iwl_host_cmd rsc_tsc_cmd = {
2143 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2144 .flags = CMD_SYNC,
2145 .data[0] = key_data.rsc_tsc,
2146 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2147 .len[0] = sizeof(*key_data.rsc_tsc),
2150 ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
2151 if (ret)
2152 goto error;
2155 if (key_data.use_tkip) {
2156 ret = iwl_trans_send_cmd_pdu(trans(priv),
2157 REPLY_WOWLAN_TKIP_PARAMS,
2158 CMD_SYNC, sizeof(tkip_cmd),
2159 &tkip_cmd);
2160 if (ret)
2161 goto error;
2164 if (priv->have_rekey_data) {
2165 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2166 memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2167 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2168 memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2169 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2170 kek_kck_cmd.replay_ctr = priv->replay_ctr;
2172 ret = iwl_trans_send_cmd_pdu(trans(priv),
2173 REPLY_WOWLAN_KEK_KCK_MATERIAL,
2174 CMD_SYNC, sizeof(kek_kck_cmd),
2175 &kek_kck_cmd);
2176 if (ret)
2177 goto error;
2181 ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
2182 CMD_SYNC, sizeof(wakeup_filter_cmd),
2183 &wakeup_filter_cmd);
2184 if (ret)
2185 goto error;
2187 ret = iwlagn_send_patterns(priv, wowlan);
2188 if (ret)
2189 goto error;
2191 device_set_wakeup_enable(priv->bus->dev, true);
2193 /* Now let the ucode operate on its own */
2194 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
2195 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2197 goto out;
2199 error:
2200 priv->shrd->wowlan = false;
2201 iwlagn_prepare_restart(priv);
2202 ieee80211_restart_hw(priv->hw);
2203 out:
2204 mutex_unlock(&priv->shrd->mutex);
2205 kfree(key_data.rsc_tsc);
2206 return ret;
2209 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2211 struct iwl_priv *priv = hw->priv;
2212 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2213 struct ieee80211_vif *vif;
2214 unsigned long flags;
2215 u32 base, status = 0xffffffff;
2216 int ret = -EIO;
2218 mutex_lock(&priv->shrd->mutex);
2220 iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
2221 CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2223 base = priv->device_pointers.error_event_table;
2224 if (iwlagn_hw_valid_rtc_data_addr(base)) {
2225 spin_lock_irqsave(&bus(priv)->reg_lock, flags);
2226 ret = iwl_grab_nic_access_silent(bus(priv));
2227 if (ret == 0) {
2228 iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, base);
2229 status = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
2230 iwl_release_nic_access(bus(priv));
2232 spin_unlock_irqrestore(&bus(priv)->reg_lock, flags);
2234 #ifdef CONFIG_IWLWIFI_DEBUGFS
2235 if (ret == 0) {
2236 if (!priv->wowlan_sram)
2237 priv->wowlan_sram =
2238 kzalloc(priv->ucode_wowlan.data.len,
2239 GFP_KERNEL);
2241 if (priv->wowlan_sram)
2242 _iwl_read_targ_mem_words(
2243 bus(priv), 0x800000, priv->wowlan_sram,
2244 priv->ucode_wowlan.data.len / 4);
2246 #endif
2249 /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2250 vif = ctx->vif;
2252 priv->shrd->wowlan = false;
2254 device_set_wakeup_enable(priv->bus->dev, false);
2256 iwlagn_prepare_restart(priv);
2258 memset((void *)&ctx->active, 0, sizeof(ctx->active));
2259 iwl_connection_init_rx_config(priv, ctx);
2260 iwlagn_set_rxon_chain(priv, ctx);
2262 mutex_unlock(&priv->shrd->mutex);
2264 ieee80211_resume_disconnect(vif);
2266 return 1;
2268 #endif
2270 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2272 struct iwl_priv *priv = hw->priv;
2274 IWL_DEBUG_MACDUMP(priv, "enter\n");
2276 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2277 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2279 if (iwlagn_tx_skb(priv, skb))
2280 dev_kfree_skb_any(skb);
2282 IWL_DEBUG_MACDUMP(priv, "leave\n");
2285 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2286 struct ieee80211_vif *vif,
2287 struct ieee80211_key_conf *keyconf,
2288 struct ieee80211_sta *sta,
2289 u32 iv32, u16 *phase1key)
2291 struct iwl_priv *priv = hw->priv;
2293 iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2296 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2297 struct ieee80211_vif *vif,
2298 struct ieee80211_sta *sta,
2299 struct ieee80211_key_conf *key)
2301 struct iwl_priv *priv = hw->priv;
2302 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2303 struct iwl_rxon_context *ctx = vif_priv->ctx;
2304 int ret;
2305 bool is_default_wep_key = false;
2307 IWL_DEBUG_MAC80211(priv, "enter\n");
2309 if (iwlagn_mod_params.sw_crypto) {
2310 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2311 return -EOPNOTSUPP;
2315 * We could program these keys into the hardware as well, but we
2316 * don't expect much multicast traffic in IBSS and having keys
2317 * for more stations is probably more useful.
2319 * Mark key TX-only and return 0.
2321 if (vif->type == NL80211_IFTYPE_ADHOC &&
2322 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2323 key->hw_key_idx = WEP_INVALID_OFFSET;
2324 return 0;
2327 /* If they key was TX-only, accept deletion */
2328 if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2329 return 0;
2331 mutex_lock(&priv->shrd->mutex);
2332 iwl_scan_cancel_timeout(priv, 100);
2334 BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2337 * If we are getting WEP group key and we didn't receive any key mapping
2338 * so far, we are in legacy wep mode (group key only), otherwise we are
2339 * in 1X mode.
2340 * In legacy wep mode, we use another host command to the uCode.
2342 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2343 key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2344 if (cmd == SET_KEY)
2345 is_default_wep_key = !ctx->key_mapping_keys;
2346 else
2347 is_default_wep_key =
2348 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2352 switch (cmd) {
2353 case SET_KEY:
2354 if (is_default_wep_key) {
2355 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2356 break;
2358 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2359 if (ret) {
2361 * can't add key for RX, but we don't need it
2362 * in the device for TX so still return 0
2364 ret = 0;
2365 key->hw_key_idx = WEP_INVALID_OFFSET;
2368 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2369 break;
2370 case DISABLE_KEY:
2371 if (is_default_wep_key)
2372 ret = iwl_remove_default_wep_key(priv, ctx, key);
2373 else
2374 ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2376 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2377 break;
2378 default:
2379 ret = -EINVAL;
2382 mutex_unlock(&priv->shrd->mutex);
2383 IWL_DEBUG_MAC80211(priv, "leave\n");
2385 return ret;
2388 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2389 struct ieee80211_vif *vif,
2390 enum ieee80211_ampdu_mlme_action action,
2391 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2392 u8 buf_size)
2394 struct iwl_priv *priv = hw->priv;
2395 int ret = -EINVAL;
2396 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2397 struct iwl_rxon_context *ctx = iwl_rxon_ctx_from_vif(vif);
2399 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2400 sta->addr, tid);
2402 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2403 return -EACCES;
2405 mutex_lock(&priv->shrd->mutex);
2407 switch (action) {
2408 case IEEE80211_AMPDU_RX_START:
2409 IWL_DEBUG_HT(priv, "start Rx\n");
2410 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2411 break;
2412 case IEEE80211_AMPDU_RX_STOP:
2413 IWL_DEBUG_HT(priv, "stop Rx\n");
2414 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2415 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2416 ret = 0;
2417 break;
2418 case IEEE80211_AMPDU_TX_START:
2419 IWL_DEBUG_HT(priv, "start Tx\n");
2420 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2421 if (ret == 0) {
2422 priv->agg_tids_count++;
2423 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2424 priv->agg_tids_count);
2426 break;
2427 case IEEE80211_AMPDU_TX_STOP:
2428 IWL_DEBUG_HT(priv, "stop Tx\n");
2429 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2430 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2431 priv->agg_tids_count--;
2432 IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2433 priv->agg_tids_count);
2435 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2436 ret = 0;
2437 if (priv->cfg->ht_params &&
2438 priv->cfg->ht_params->use_rts_for_aggregation) {
2440 * switch off RTS/CTS if it was previously enabled
2442 sta_priv->lq_sta.lq.general_params.flags &=
2443 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2444 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2445 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2447 break;
2448 case IEEE80211_AMPDU_TX_OPERATIONAL:
2449 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2451 iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, iwl_sta_id(sta),
2452 tid, buf_size);
2455 * If the limit is 0, then it wasn't initialised yet,
2456 * use the default. We can do that since we take the
2457 * minimum below, and we don't want to go above our
2458 * default due to hardware restrictions.
2460 if (sta_priv->max_agg_bufsize == 0)
2461 sta_priv->max_agg_bufsize =
2462 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2465 * Even though in theory the peer could have different
2466 * aggregation reorder buffer sizes for different sessions,
2467 * our ucode doesn't allow for that and has a global limit
2468 * for each station. Therefore, use the minimum of all the
2469 * aggregation sessions and our default value.
2471 sta_priv->max_agg_bufsize =
2472 min(sta_priv->max_agg_bufsize, buf_size);
2474 if (priv->cfg->ht_params &&
2475 priv->cfg->ht_params->use_rts_for_aggregation) {
2477 * switch to RTS/CTS if it is the prefer protection
2478 * method for HT traffic
2481 sta_priv->lq_sta.lq.general_params.flags |=
2482 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2485 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2486 sta_priv->max_agg_bufsize;
2488 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2489 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2491 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2492 sta->addr, tid);
2493 ret = 0;
2494 break;
2496 mutex_unlock(&priv->shrd->mutex);
2498 return ret;
2501 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2502 struct ieee80211_vif *vif,
2503 struct ieee80211_sta *sta)
2505 struct iwl_priv *priv = hw->priv;
2506 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2507 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2508 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2509 int ret;
2510 u8 sta_id;
2512 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2513 sta->addr);
2514 mutex_lock(&priv->shrd->mutex);
2515 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2516 sta->addr);
2517 sta_priv->sta_id = IWL_INVALID_STATION;
2519 atomic_set(&sta_priv->pending_frames, 0);
2520 if (vif->type == NL80211_IFTYPE_AP)
2521 sta_priv->client = true;
2523 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2524 is_ap, sta, &sta_id);
2525 if (ret) {
2526 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2527 sta->addr, ret);
2528 /* Should we return success if return code is EEXIST ? */
2529 mutex_unlock(&priv->shrd->mutex);
2530 return ret;
2533 sta_priv->sta_id = sta_id;
2535 /* Initialize rate scaling */
2536 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2537 sta->addr);
2538 iwl_rs_rate_init(priv, sta, sta_id);
2539 mutex_unlock(&priv->shrd->mutex);
2541 return 0;
2544 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2545 struct ieee80211_channel_switch *ch_switch)
2547 struct iwl_priv *priv = hw->priv;
2548 const struct iwl_channel_info *ch_info;
2549 struct ieee80211_conf *conf = &hw->conf;
2550 struct ieee80211_channel *channel = ch_switch->channel;
2551 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2553 * MULTI-FIXME
2554 * When we add support for multiple interfaces, we need to
2555 * revisit this. The channel switch command in the device
2556 * only affects the BSS context, but what does that really
2557 * mean? And what if we get a CSA on the second interface?
2558 * This needs a lot of work.
2560 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2561 u16 ch;
2563 IWL_DEBUG_MAC80211(priv, "enter\n");
2565 mutex_lock(&priv->shrd->mutex);
2567 if (iwl_is_rfkill(priv->shrd))
2568 goto out;
2570 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
2571 test_bit(STATUS_SCANNING, &priv->shrd->status) ||
2572 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
2573 goto out;
2575 if (!iwl_is_associated_ctx(ctx))
2576 goto out;
2578 if (!priv->cfg->lib->set_channel_switch)
2579 goto out;
2581 ch = channel->hw_value;
2582 if (le16_to_cpu(ctx->active.channel) == ch)
2583 goto out;
2585 ch_info = iwl_get_channel_info(priv, channel->band, ch);
2586 if (!is_channel_valid(ch_info)) {
2587 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2588 goto out;
2591 spin_lock_irq(&priv->shrd->lock);
2593 priv->current_ht_config.smps = conf->smps_mode;
2595 /* Configure HT40 channels */
2596 ctx->ht.enabled = conf_is_ht(conf);
2597 if (ctx->ht.enabled) {
2598 if (conf_is_ht40_minus(conf)) {
2599 ctx->ht.extension_chan_offset =
2600 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2601 ctx->ht.is_40mhz = true;
2602 } else if (conf_is_ht40_plus(conf)) {
2603 ctx->ht.extension_chan_offset =
2604 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2605 ctx->ht.is_40mhz = true;
2606 } else {
2607 ctx->ht.extension_chan_offset =
2608 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2609 ctx->ht.is_40mhz = false;
2611 } else
2612 ctx->ht.is_40mhz = false;
2614 if ((le16_to_cpu(ctx->staging.channel) != ch))
2615 ctx->staging.flags = 0;
2617 iwl_set_rxon_channel(priv, channel, ctx);
2618 iwl_set_rxon_ht(priv, ht_conf);
2619 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2621 spin_unlock_irq(&priv->shrd->lock);
2623 iwl_set_rate(priv);
2625 * at this point, staging_rxon has the
2626 * configuration for channel switch
2628 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2629 priv->switch_channel = cpu_to_le16(ch);
2630 if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
2631 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2632 priv->switch_channel = 0;
2633 ieee80211_chswitch_done(ctx->vif, false);
2636 out:
2637 mutex_unlock(&priv->shrd->mutex);
2638 IWL_DEBUG_MAC80211(priv, "leave\n");
2641 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
2642 unsigned int changed_flags,
2643 unsigned int *total_flags,
2644 u64 multicast)
2646 struct iwl_priv *priv = hw->priv;
2647 __le32 filter_or = 0, filter_nand = 0;
2648 struct iwl_rxon_context *ctx;
2650 #define CHK(test, flag) do { \
2651 if (*total_flags & (test)) \
2652 filter_or |= (flag); \
2653 else \
2654 filter_nand |= (flag); \
2655 } while (0)
2657 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
2658 changed_flags, *total_flags);
2660 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
2661 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
2662 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
2663 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
2665 #undef CHK
2667 mutex_lock(&priv->shrd->mutex);
2669 for_each_context(priv, ctx) {
2670 ctx->staging.filter_flags &= ~filter_nand;
2671 ctx->staging.filter_flags |= filter_or;
2674 * Not committing directly because hardware can perform a scan,
2675 * but we'll eventually commit the filter flags change anyway.
2679 mutex_unlock(&priv->shrd->mutex);
2682 * Receiving all multicast frames is always enabled by the
2683 * default flags setup in iwl_connection_init_rx_config()
2684 * since we currently do not support programming multicast
2685 * filters into the device.
2687 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2688 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2691 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
2693 struct iwl_priv *priv = hw->priv;
2695 mutex_lock(&priv->shrd->mutex);
2696 IWL_DEBUG_MAC80211(priv, "enter\n");
2698 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
2699 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
2700 goto done;
2702 if (iwl_is_rfkill(priv->shrd)) {
2703 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
2704 goto done;
2708 * mac80211 will not push any more frames for transmit
2709 * until the flush is completed
2711 if (drop) {
2712 IWL_DEBUG_MAC80211(priv, "send flush command\n");
2713 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
2714 IWL_ERR(priv, "flush request fail\n");
2715 goto done;
2718 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
2719 iwl_trans_wait_tx_queue_empty(trans(priv));
2720 done:
2721 mutex_unlock(&priv->shrd->mutex);
2722 IWL_DEBUG_MAC80211(priv, "leave\n");
2725 void iwlagn_disable_roc(struct iwl_priv *priv)
2727 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2729 lockdep_assert_held(&priv->shrd->mutex);
2731 if (!priv->hw_roc_setup)
2732 return;
2734 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2735 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2737 priv->hw_roc_channel = NULL;
2739 memset(ctx->staging.node_addr, 0, ETH_ALEN);
2741 iwlagn_commit_rxon(priv, ctx);
2743 ctx->is_active = false;
2744 priv->hw_roc_setup = false;
2747 static void iwlagn_disable_roc_work(struct work_struct *work)
2749 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2750 hw_roc_disable_work.work);
2752 mutex_lock(&priv->shrd->mutex);
2753 iwlagn_disable_roc(priv);
2754 mutex_unlock(&priv->shrd->mutex);
2757 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
2758 struct ieee80211_channel *channel,
2759 enum nl80211_channel_type channel_type,
2760 int duration)
2762 struct iwl_priv *priv = hw->priv;
2763 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2764 int err = 0;
2766 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2767 return -EOPNOTSUPP;
2769 if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
2770 return -EOPNOTSUPP;
2772 mutex_lock(&priv->shrd->mutex);
2774 if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
2775 err = -EBUSY;
2776 goto out;
2779 priv->hw_roc_channel = channel;
2780 priv->hw_roc_chantype = channel_type;
2781 priv->hw_roc_duration = duration;
2782 priv->hw_roc_start_notified = false;
2783 cancel_delayed_work(&priv->hw_roc_disable_work);
2785 if (!ctx->is_active) {
2786 ctx->is_active = true;
2787 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2788 memcpy(ctx->staging.node_addr,
2789 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2790 ETH_ALEN);
2791 memcpy(ctx->staging.bssid_addr,
2792 priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2793 ETH_ALEN);
2794 err = iwlagn_commit_rxon(priv, ctx);
2795 if (err)
2796 goto out;
2797 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
2798 RXON_FILTER_PROMISC_MSK |
2799 RXON_FILTER_CTL2HOST_MSK;
2801 err = iwlagn_commit_rxon(priv, ctx);
2802 if (err) {
2803 iwlagn_disable_roc(priv);
2804 goto out;
2806 priv->hw_roc_setup = true;
2809 err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
2810 if (err)
2811 iwlagn_disable_roc(priv);
2813 out:
2814 mutex_unlock(&priv->shrd->mutex);
2816 return err;
2819 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
2821 struct iwl_priv *priv = hw->priv;
2823 if (!(priv->shrd->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2824 return -EOPNOTSUPP;
2826 mutex_lock(&priv->shrd->mutex);
2827 iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
2828 iwlagn_disable_roc(priv);
2829 mutex_unlock(&priv->shrd->mutex);
2831 return 0;
2834 static int iwl_mac_tx_sync(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
2835 const u8 *bssid, enum ieee80211_tx_sync_type type)
2837 struct iwl_priv *priv = hw->priv;
2838 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2839 struct iwl_rxon_context *ctx = vif_priv->ctx;
2840 int ret;
2841 u8 sta_id;
2843 mutex_lock(&priv->shrd->mutex);
2845 if (iwl_is_associated_ctx(ctx)) {
2846 ret = 0;
2847 goto out;
2850 if (ctx->preauth_bssid || test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
2851 ret = -EBUSY;
2852 goto out;
2855 ret = iwl_add_station_common(priv, ctx, bssid, true, NULL, &sta_id);
2856 if (ret)
2857 goto out;
2859 if (WARN_ON(sta_id != ctx->ap_sta_id)) {
2860 ret = -EIO;
2861 goto out_remove_sta;
2864 memcpy(ctx->bssid, bssid, ETH_ALEN);
2865 ctx->preauth_bssid = true;
2867 ret = iwlagn_commit_rxon(priv, ctx);
2869 if (ret == 0)
2870 goto out;
2872 out_remove_sta:
2873 iwl_remove_station(priv, sta_id, bssid);
2874 out:
2875 mutex_unlock(&priv->shrd->mutex);
2876 return ret;
2879 static void iwl_mac_finish_tx_sync(struct ieee80211_hw *hw,
2880 struct ieee80211_vif *vif,
2881 const u8 *bssid,
2882 enum ieee80211_tx_sync_type type)
2884 struct iwl_priv *priv = hw->priv;
2885 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2886 struct iwl_rxon_context *ctx = vif_priv->ctx;
2888 mutex_lock(&priv->shrd->mutex);
2890 if (iwl_is_associated_ctx(ctx))
2891 goto out;
2893 iwl_remove_station(priv, ctx->ap_sta_id, bssid);
2894 ctx->preauth_bssid = false;
2895 /* no need to commit */
2896 out:
2897 mutex_unlock(&priv->shrd->mutex);
2900 /*****************************************************************************
2902 * driver setup and teardown
2904 *****************************************************************************/
2906 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2908 priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
2910 init_waitqueue_head(&priv->shrd->wait_command_queue);
2912 INIT_WORK(&priv->restart, iwl_bg_restart);
2913 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2914 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2915 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
2916 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
2917 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
2918 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
2919 iwlagn_disable_roc_work);
2921 iwl_setup_scan_deferred_work(priv);
2923 if (priv->cfg->lib->bt_setup_deferred_work)
2924 priv->cfg->lib->bt_setup_deferred_work(priv);
2926 init_timer(&priv->statistics_periodic);
2927 priv->statistics_periodic.data = (unsigned long)priv;
2928 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2930 init_timer(&priv->ucode_trace);
2931 priv->ucode_trace.data = (unsigned long)priv;
2932 priv->ucode_trace.function = iwl_bg_ucode_trace;
2934 init_timer(&priv->watchdog);
2935 priv->watchdog.data = (unsigned long)priv;
2936 priv->watchdog.function = iwl_bg_watchdog;
2939 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2941 if (priv->cfg->lib->cancel_deferred_work)
2942 priv->cfg->lib->cancel_deferred_work(priv);
2944 cancel_work_sync(&priv->run_time_calib_work);
2945 cancel_work_sync(&priv->beacon_update);
2947 iwl_cancel_scan_deferred_work(priv);
2949 cancel_work_sync(&priv->bt_full_concurrency);
2950 cancel_work_sync(&priv->bt_runtime_config);
2951 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
2953 del_timer_sync(&priv->statistics_periodic);
2954 del_timer_sync(&priv->ucode_trace);
2957 static void iwl_init_hw_rates(struct iwl_priv *priv,
2958 struct ieee80211_rate *rates)
2960 int i;
2962 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
2963 rates[i].bitrate = iwl_rates[i].ieee * 5;
2964 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2965 rates[i].hw_value_short = i;
2966 rates[i].flags = 0;
2967 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
2969 * If CCK != 1M then set short preamble rate flag.
2971 rates[i].flags |=
2972 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
2973 0 : IEEE80211_RATE_SHORT_PREAMBLE;
2978 static int iwl_init_drv(struct iwl_priv *priv)
2980 int ret;
2982 spin_lock_init(&priv->shrd->sta_lock);
2984 mutex_init(&priv->shrd->mutex);
2986 priv->ieee_channels = NULL;
2987 priv->ieee_rates = NULL;
2988 priv->band = IEEE80211_BAND_2GHZ;
2990 priv->iw_mode = NL80211_IFTYPE_STATION;
2991 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
2992 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
2993 priv->agg_tids_count = 0;
2995 /* initialize force reset */
2996 priv->force_reset[IWL_RF_RESET].reset_duration =
2997 IWL_DELAY_NEXT_FORCE_RF_RESET;
2998 priv->force_reset[IWL_FW_RESET].reset_duration =
2999 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3001 priv->rx_statistics_jiffies = jiffies;
3003 /* Choose which receivers/antennas to use */
3004 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3006 iwl_init_scan_params(priv);
3008 /* init bt coex */
3009 if (priv->cfg->bt_params &&
3010 priv->cfg->bt_params->advanced_bt_coexist) {
3011 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3012 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3013 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3014 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3015 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3016 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3019 ret = iwl_init_channel_map(priv);
3020 if (ret) {
3021 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3022 goto err;
3025 ret = iwl_init_geos(priv);
3026 if (ret) {
3027 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3028 goto err_free_channel_map;
3030 iwl_init_hw_rates(priv, priv->ieee_rates);
3032 return 0;
3034 err_free_channel_map:
3035 iwl_free_channel_map(priv);
3036 err:
3037 return ret;
3040 static void iwl_uninit_drv(struct iwl_priv *priv)
3042 iwl_calib_free_results(priv);
3043 iwl_free_geos(priv);
3044 iwl_free_channel_map(priv);
3045 if (priv->tx_cmd_pool)
3046 kmem_cache_destroy(priv->tx_cmd_pool);
3047 kfree(priv->scan_cmd);
3048 kfree(priv->beacon_cmd);
3049 #ifdef CONFIG_IWLWIFI_DEBUGFS
3050 kfree(priv->wowlan_sram);
3051 #endif
3054 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3055 enum ieee80211_rssi_event rssi_event)
3057 struct iwl_priv *priv = hw->priv;
3059 mutex_lock(&priv->shrd->mutex);
3061 if (priv->cfg->bt_params &&
3062 priv->cfg->bt_params->advanced_bt_coexist) {
3063 if (rssi_event == RSSI_EVENT_LOW)
3064 priv->bt_enable_pspoll = true;
3065 else if (rssi_event == RSSI_EVENT_HIGH)
3066 priv->bt_enable_pspoll = false;
3068 iwlagn_send_advance_bt_config(priv);
3069 } else {
3070 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3071 "ignoring RSSI callback\n");
3074 mutex_unlock(&priv->shrd->mutex);
3077 struct ieee80211_ops iwlagn_hw_ops = {
3078 .tx = iwlagn_mac_tx,
3079 .start = iwlagn_mac_start,
3080 .stop = iwlagn_mac_stop,
3081 #ifdef CONFIG_PM_SLEEP
3082 .suspend = iwlagn_mac_suspend,
3083 .resume = iwlagn_mac_resume,
3084 #endif
3085 .add_interface = iwl_mac_add_interface,
3086 .remove_interface = iwl_mac_remove_interface,
3087 .change_interface = iwl_mac_change_interface,
3088 .config = iwlagn_mac_config,
3089 .configure_filter = iwlagn_configure_filter,
3090 .set_key = iwlagn_mac_set_key,
3091 .update_tkip_key = iwlagn_mac_update_tkip_key,
3092 .set_rekey_data = iwlagn_mac_set_rekey_data,
3093 .conf_tx = iwl_mac_conf_tx,
3094 .bss_info_changed = iwlagn_bss_info_changed,
3095 .ampdu_action = iwlagn_mac_ampdu_action,
3096 .hw_scan = iwl_mac_hw_scan,
3097 .sta_notify = iwlagn_mac_sta_notify,
3098 .sta_add = iwlagn_mac_sta_add,
3099 .sta_remove = iwl_mac_sta_remove,
3100 .channel_switch = iwlagn_mac_channel_switch,
3101 .flush = iwlagn_mac_flush,
3102 .tx_last_beacon = iwl_mac_tx_last_beacon,
3103 .remain_on_channel = iwl_mac_remain_on_channel,
3104 .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3105 .rssi_callback = iwl_mac_rssi_callback,
3106 CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3107 CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3108 .tx_sync = iwl_mac_tx_sync,
3109 .finish_tx_sync = iwl_mac_finish_tx_sync,
3112 static u32 iwl_hw_detect(struct iwl_priv *priv)
3114 return iwl_read32(bus(priv), CSR_HW_REV);
3117 /* Size of one Rx buffer in host DRAM */
3118 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
3119 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
3121 static int iwl_set_hw_params(struct iwl_priv *priv)
3123 if (iwlagn_mod_params.amsdu_size_8K)
3124 hw_params(priv).rx_page_order =
3125 get_order(IWL_RX_BUF_SIZE_8K);
3126 else
3127 hw_params(priv).rx_page_order =
3128 get_order(IWL_RX_BUF_SIZE_4K);
3130 if (iwlagn_mod_params.disable_11n)
3131 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3133 hw_params(priv).num_ampdu_queues =
3134 priv->cfg->base_params->num_of_ampdu_queues;
3135 hw_params(priv).shadow_reg_enable =
3136 priv->cfg->base_params->shadow_reg_enable;
3137 hw_params(priv).sku = priv->cfg->sku;
3138 hw_params(priv).wd_timeout = priv->cfg->base_params->wd_timeout;
3140 /* Device-specific setup */
3141 return priv->cfg->lib->set_hw_params(priv);
3144 /* This function both allocates and initializes hw and priv. */
3145 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3147 struct iwl_priv *priv;
3148 /* mac80211 allocates memory for this device instance, including
3149 * space for this driver's private structure */
3150 struct ieee80211_hw *hw;
3152 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3153 if (hw == NULL) {
3154 pr_err("%s: Can not allocate network device\n",
3155 cfg->name);
3156 goto out;
3159 priv = hw->priv;
3160 priv->hw = hw;
3162 out:
3163 return hw;
3166 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
3167 struct iwl_cfg *cfg)
3169 int err = 0;
3170 struct iwl_priv *priv;
3171 struct ieee80211_hw *hw;
3172 u16 num_mac;
3173 u32 hw_rev;
3175 /************************
3176 * 1. Allocating HW data
3177 ************************/
3178 hw = iwl_alloc_all(cfg);
3179 if (!hw) {
3180 err = -ENOMEM;
3181 goto out;
3184 priv = hw->priv;
3185 priv->bus = bus;
3186 priv->shrd = &priv->_shrd;
3187 bus->shrd = priv->shrd;
3188 priv->shrd->bus = bus;
3189 priv->shrd->priv = priv;
3191 priv->shrd->trans = trans_ops->alloc(priv->shrd);
3192 if (priv->shrd->trans == NULL) {
3193 err = -ENOMEM;
3194 goto out_free_traffic_mem;
3197 /* At this point both hw and priv are allocated. */
3199 SET_IEEE80211_DEV(hw, priv->bus->dev);
3201 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3202 priv->cfg = cfg;
3204 /* is antenna coupling more than 35dB ? */
3205 priv->bt_ant_couple_ok =
3206 (iwlagn_mod_params.ant_coupling >
3207 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3208 true : false;
3210 /* enable/disable bt channel inhibition */
3211 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
3212 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3213 (priv->bt_ch_announce) ? "On" : "Off");
3215 if (iwl_alloc_traffic_mem(priv))
3216 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3218 /* these spin locks will be used in apm_ops.init and EEPROM access
3219 * we should init now
3221 spin_lock_init(&bus(priv)->reg_lock);
3222 spin_lock_init(&priv->shrd->lock);
3225 * stop and reset the on-board processor just in case it is in a
3226 * strange state ... like being left stranded by a primary kernel
3227 * and this is now the kdump kernel trying to start up
3229 iwl_write32(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3231 /***********************
3232 * 3. Read REV register
3233 ***********************/
3234 hw_rev = iwl_hw_detect(priv);
3235 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3236 priv->cfg->name, hw_rev);
3238 err = iwl_trans_request_irq(trans(priv));
3239 if (err)
3240 goto out_free_trans;
3242 if (iwl_trans_prepare_card_hw(trans(priv))) {
3243 err = -EIO;
3244 IWL_WARN(priv, "Failed, HW not ready\n");
3245 goto out_free_trans;
3248 /*****************
3249 * 4. Read EEPROM
3250 *****************/
3251 /* Read the EEPROM */
3252 err = iwl_eeprom_init(priv, hw_rev);
3253 if (err) {
3254 IWL_ERR(priv, "Unable to init EEPROM\n");
3255 goto out_free_trans;
3257 err = iwl_eeprom_check_version(priv);
3258 if (err)
3259 goto out_free_eeprom;
3261 err = iwl_eeprom_check_sku(priv);
3262 if (err)
3263 goto out_free_eeprom;
3265 /* extract MAC Address */
3266 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3267 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3268 priv->hw->wiphy->addresses = priv->addresses;
3269 priv->hw->wiphy->n_addresses = 1;
3270 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3271 if (num_mac > 1) {
3272 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3273 ETH_ALEN);
3274 priv->addresses[1].addr[5]++;
3275 priv->hw->wiphy->n_addresses++;
3278 /************************
3279 * 5. Setup HW constants
3280 ************************/
3281 if (iwl_set_hw_params(priv)) {
3282 err = -ENOENT;
3283 IWL_ERR(priv, "failed to set hw parameters\n");
3284 goto out_free_eeprom;
3287 /*******************
3288 * 6. Setup priv
3289 *******************/
3291 err = iwl_init_drv(priv);
3292 if (err)
3293 goto out_free_eeprom;
3294 /* At this point both hw and priv are initialized. */
3296 /********************
3297 * 7. Setup services
3298 ********************/
3299 iwl_setup_deferred_work(priv);
3300 iwl_setup_rx_handlers(priv);
3301 iwl_testmode_init(priv);
3303 /*********************************************
3304 * 8. Enable interrupts
3305 *********************************************/
3307 iwl_enable_rfkill_int(priv);
3309 /* If platform's RF_KILL switch is NOT set to KILL */
3310 if (iwl_read32(bus(priv),
3311 CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3312 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3313 else
3314 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3316 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3317 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
3319 iwl_power_initialize(priv);
3320 iwl_tt_initialize(priv);
3322 init_completion(&priv->firmware_loading_complete);
3324 err = iwl_request_firmware(priv, true);
3325 if (err)
3326 goto out_destroy_workqueue;
3328 return 0;
3330 out_destroy_workqueue:
3331 destroy_workqueue(priv->shrd->workqueue);
3332 priv->shrd->workqueue = NULL;
3333 iwl_uninit_drv(priv);
3334 out_free_eeprom:
3335 iwl_eeprom_free(priv);
3336 out_free_trans:
3337 iwl_trans_free(trans(priv));
3338 out_free_traffic_mem:
3339 iwl_free_traffic_mem(priv);
3340 ieee80211_free_hw(priv->hw);
3341 out:
3342 return err;
3345 void __devexit iwl_remove(struct iwl_priv * priv)
3347 wait_for_completion(&priv->firmware_loading_complete);
3349 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3351 iwl_dbgfs_unregister(priv);
3353 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3354 * to be called and iwl_down since we are removing the device
3355 * we need to set STATUS_EXIT_PENDING bit.
3357 set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
3359 iwl_testmode_cleanup(priv);
3360 iwl_leds_exit(priv);
3362 if (priv->mac80211_registered) {
3363 ieee80211_unregister_hw(priv->hw);
3364 priv->mac80211_registered = 0;
3367 iwl_tt_exit(priv);
3369 /*This will stop the queues, move the device to low power state */
3370 iwl_trans_stop_device(trans(priv));
3372 iwl_dealloc_ucode(priv);
3374 iwl_eeprom_free(priv);
3376 /*netif_stop_queue(dev); */
3377 flush_workqueue(priv->shrd->workqueue);
3379 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3380 * priv->shrd->workqueue... so we can't take down the workqueue
3381 * until now... */
3382 destroy_workqueue(priv->shrd->workqueue);
3383 priv->shrd->workqueue = NULL;
3384 iwl_free_traffic_mem(priv);
3386 iwl_trans_free(trans(priv));
3388 iwl_uninit_drv(priv);
3390 dev_kfree_skb(priv->beacon_skb);
3392 ieee80211_free_hw(priv->hw);
3396 /*****************************************************************************
3398 * driver and module entry point
3400 *****************************************************************************/
3401 static int __init iwl_init(void)
3404 int ret;
3405 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3406 pr_info(DRV_COPYRIGHT "\n");
3408 ret = iwlagn_rate_control_register();
3409 if (ret) {
3410 pr_err("Unable to register rate control algorithm: %d\n", ret);
3411 return ret;
3414 ret = iwl_pci_register_driver();
3416 if (ret)
3417 goto error_register;
3418 return ret;
3420 error_register:
3421 iwlagn_rate_control_unregister();
3422 return ret;
3425 static void __exit iwl_exit(void)
3427 iwl_pci_unregister_driver();
3428 iwlagn_rate_control_unregister();
3431 module_exit(iwl_exit);
3432 module_init(iwl_init);
3434 #ifdef CONFIG_IWLWIFI_DEBUG
3435 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
3436 S_IRUGO | S_IWUSR);
3437 MODULE_PARM_DESC(debug, "debug output mask");
3438 #endif
3440 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3441 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3442 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3443 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3444 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3445 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3446 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3447 int, S_IRUGO);
3448 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3449 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3450 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3452 module_param_named(ucode_alternative,
3453 iwlagn_mod_params.wanted_ucode_alternative,
3454 int, S_IRUGO);
3455 MODULE_PARM_DESC(ucode_alternative,
3456 "specify ucode alternative to use from ucode file");
3458 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
3459 int, S_IRUGO);
3460 MODULE_PARM_DESC(antenna_coupling,
3461 "specify antenna coupling in dB (defualt: 0 dB)");
3463 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
3464 bool, S_IRUGO);
3465 MODULE_PARM_DESC(bt_ch_inhibition,
3466 "Enable BT channel inhibition (default: enable)");
3468 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3469 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3471 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3472 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3474 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3475 MODULE_PARM_DESC(wd_disable,
3476 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3479 * set bt_coex_active to true, uCode will do kill/defer
3480 * every time the priority line is asserted (BT is sending signals on the
3481 * priority line in the PCIx).
3482 * set bt_coex_active to false, uCode will ignore the BT activity and
3483 * perform the normal operation
3485 * User might experience transmit issue on some platform due to WiFi/BT
3486 * co-exist problem. The possible behaviors are:
3487 * Able to scan and finding all the available AP
3488 * Not able to associate with any AP
3489 * On those platforms, WiFi communication can be restored by set
3490 * "bt_coex_active" module parameter to "false"
3492 * default: bt_coex_active = true (BT_COEX_ENABLE)
3494 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3495 bool, S_IRUGO);
3496 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3498 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3499 MODULE_PARM_DESC(led_mode, "0=system default, "
3500 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3502 module_param_named(power_save, iwlagn_mod_params.power_save,
3503 bool, S_IRUGO);
3504 MODULE_PARM_DESC(power_save,
3505 "enable WiFi power management (default: disable)");
3507 module_param_named(power_level, iwlagn_mod_params.power_level,
3508 int, S_IRUGO);
3509 MODULE_PARM_DESC(power_level,
3510 "default power save level (range from 1 - 5, default: 1)");
3512 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
3513 bool, S_IRUGO);
3514 MODULE_PARM_DESC(auto_agg,
3515 "enable agg w/o check traffic load (default: enable)");
3518 * For now, keep using power level 1 instead of automatically
3519 * adjusting ...
3521 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3522 bool, S_IRUGO);
3523 MODULE_PARM_DESC(no_sleep_autoadjust,
3524 "don't automatically adjust sleep level "
3525 "according to maximum network latency (default: true)");