blob: 09367d430120945d399e4dd75bc968e7a2092e47 [file] [log] [blame]
Zhu Yib481de92007-09-25 17:54:57 -07001/******************************************************************************
2 *
Wey-Yi Guy4e318262011-12-27 11:21:32 -08003 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
Zhu Yib481de92007-09-25 17:54:57 -07004 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
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.
11 *
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.
16 *
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
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
Winkler, Tomas759ef892008-12-09 11:28:58 -080025 * Intel Linux Wireless <ilw@linux.intel.com>
Zhu Yib481de92007-09-25 17:54:57 -070026 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
Joe Perches69b87972012-03-26 08:27:40 -070029
30#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
Zhu Yib481de92007-09-25 17:54:57 -070032#include <linux/kernel.h>
33#include <linux/module.h>
Zhu Yib481de92007-09-25 17:54:57 -070034#include <linux/init.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090035#include <linux/slab.h>
Zhu Yib481de92007-09-25 17:54:57 -070036#include <linux/delay.h>
Alexey Dobriyand43c36d2009-10-07 17:09:06 +040037#include <linux/sched.h>
Zhu Yib481de92007-09-25 17:54:57 -070038#include <linux/skbuff.h>
39#include <linux/netdevice.h>
Zhu Yib481de92007-09-25 17:54:57 -070040#include <linux/etherdevice.h>
41#include <linux/if_arp.h>
42
Zhu Yib481de92007-09-25 17:54:57 -070043#include <net/mac80211.h>
44
45#include <asm/div64.h>
46
Assaf Krauss6bc913b2008-03-11 16:17:18 -070047#include "iwl-eeprom.h"
Tomas Winkler3e0d4cb2008-04-24 11:55:38 -070048#include "iwl-dev.h"
Tomas Winklerfee12472008-04-03 16:05:21 -070049#include "iwl-core.h"
Tomas Winkler3395f6e2008-03-25 16:33:37 -070050#include "iwl-io.h"
Johannes Berg0de76732010-09-22 18:02:11 +020051#include "iwl-agn-calib.h"
Johannes Berga1175122010-01-21 06:21:10 -080052#include "iwl-agn.h"
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -070053#include "iwl-shared.h"
Emmanuel Grumbachc85eb612011-06-14 10:13:24 +030054#include "iwl-trans.h"
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +020055#include "iwl-op-mode.h"
Christoph Hellwig416e1432007-10-25 17:15:49 +080056
Zhu Yib481de92007-09-25 17:54:57 -070057/******************************************************************************
58 *
59 * module boiler plate
60 *
61 ******************************************************************************/
62
Zhu Yib481de92007-09-25 17:54:57 -070063/*
64 * module name, copyright, version, etc.
Zhu Yib481de92007-09-25 17:54:57 -070065 */
Tomas Winklerd783b062008-07-18 13:53:02 +080066#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
Zhu Yib481de92007-09-25 17:54:57 -070067
Tomas Winkler0a6857e2008-03-12 16:58:49 -070068#ifdef CONFIG_IWLWIFI_DEBUG
Zhu Yib481de92007-09-25 17:54:57 -070069#define VD "d"
70#else
71#define VD
72#endif
73
Reinette Chatre81963d62010-01-22 14:22:57 -080074#define DRV_VERSION IWLWIFI_VERSION VD
Zhu Yib481de92007-09-25 17:54:57 -070075
Zhu Yib481de92007-09-25 17:54:57 -070076
77MODULE_DESCRIPTION(DRV_DESCRIPTION);
78MODULE_VERSION(DRV_VERSION);
Tomas Winklera7b75202008-12-11 10:33:41 -080079MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
Zhu Yib481de92007-09-25 17:54:57 -070080MODULE_LICENSE("GPL");
Don Fry3c607d22011-09-30 11:40:20 -070081MODULE_ALIAS("iwlagn");
Zhu Yib481de92007-09-25 17:54:57 -070082
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -070083void iwl_update_chain_flags(struct iwl_priv *priv)
Mohamed Abbas5da4b552008-04-21 15:41:51 -070084{
Johannes Berg246ed352010-08-23 10:46:32 +020085 struct iwl_rxon_context *ctx;
Mohamed Abbas5da4b552008-04-21 15:41:51 -070086
Wey-Yi Guye3f10ce2011-07-01 07:59:26 -070087 for_each_context(priv, ctx) {
88 iwlagn_set_rxon_chain(priv, ctx);
89 if (ctx->active.rx_chain != ctx->staging.rx_chain)
90 iwlagn_commit_rxon(priv, ctx);
Johannes Berg246ed352010-08-23 10:46:32 +020091 }
Mohamed Abbas5da4b552008-04-21 15:41:51 -070092}
93
Daniel C Halperin47ff65c2009-11-13 11:56:33 -080094/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
95static void iwl_set_beacon_tim(struct iwl_priv *priv,
Johannes Berg77834542010-10-04 05:50:36 -070096 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
97 u8 *beacon, u32 frame_size)
Daniel C Halperin47ff65c2009-11-13 11:56:33 -080098{
99 u16 tim_idx;
100 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
101
102 /*
103 * The index is relative to frame start but we start looking at the
104 * variable-length part of the beacon.
105 */
106 tim_idx = mgmt->u.beacon.variable - beacon;
107
108 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
109 while ((tim_idx < (frame_size - 2)) &&
110 (beacon[tim_idx] != WLAN_EID_TIM))
111 tim_idx += beacon[tim_idx+1] + 2;
112
113 /* If TIM field was found, set variables */
114 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
115 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
116 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
117 } else
118 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
119}
120
Johannes Berg8a98d492011-04-29 09:48:14 -0700121int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800122{
123 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
Johannes Berg8a98d492011-04-29 09:48:14 -0700124 struct iwl_host_cmd cmd = {
125 .id = REPLY_TX_BEACON,
Emmanuel Grumbache419d622011-07-08 08:46:14 -0700126 .flags = CMD_SYNC,
Johannes Berg8a98d492011-04-29 09:48:14 -0700127 };
Johannes Berg0b5b3ff2011-06-22 06:33:43 -0700128 struct ieee80211_tx_info *info;
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800129 u32 frame_size;
130 u32 rate_flags;
131 u32 rate;
Johannes Berg8a98d492011-04-29 09:48:14 -0700132
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800133 /*
134 * We have to set up the TX command, the TX Beacon command, and the
135 * beacon contents.
136 */
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800137
Johannes Bergb1eea292012-03-06 13:30:42 -0800138 lockdep_assert_held(&priv->mutex);
Johannes Berg76d04812010-08-23 10:46:47 +0200139
140 if (!priv->beacon_ctx) {
141 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
Julia Lawall950094c2010-09-05 21:00:26 +0200142 return 0;
Johannes Berg76d04812010-08-23 10:46:47 +0200143 }
144
Johannes Berg8a98d492011-04-29 09:48:14 -0700145 if (WARN_ON(!priv->beacon_skb))
146 return -EINVAL;
147
Johannes Berg4ce7cc22011-05-13 11:57:40 -0700148 /* Allocate beacon command */
149 if (!priv->beacon_cmd)
150 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
151 tx_beacon_cmd = priv->beacon_cmd;
Johannes Berg8a98d492011-04-29 09:48:14 -0700152 if (!tx_beacon_cmd)
153 return -ENOMEM;
154
155 frame_size = priv->beacon_skb->len;
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800156
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800157 /* Set up TX command fields */
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800158 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
Johannes Berg76d04812010-08-23 10:46:47 +0200159 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800160 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800161 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800162 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
163
164 /* Set up TX beacon command fields */
Johannes Berg4ce7cc22011-05-13 11:57:40 -0700165 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
Johannes Berg77834542010-10-04 05:50:36 -0700166 frame_size);
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800167
168 /* Set up packet rate and flags */
Johannes Berg0b5b3ff2011-06-22 06:33:43 -0700169 info = IEEE80211_SKB_CB(priv->beacon_skb);
170
171 /*
172 * Let's set up the rate at least somewhat correctly;
173 * it will currently not actually be used by the uCode,
174 * it uses the broadcast station's rate instead.
175 */
176 if (info->control.rates[0].idx < 0 ||
177 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
178 rate = 0;
179 else
180 rate = info->control.rates[0].idx;
181
Johannes Berg0e1654f2010-05-18 02:48:36 -0700182 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
Johannes Berg9e295112012-04-09 17:46:55 -0700183 priv->hw_params.valid_tx_ant);
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800184 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
Johannes Berg0b5b3ff2011-06-22 06:33:43 -0700185
186 /* In mac80211, rates for 5 GHz start at 0 */
187 if (info->band == IEEE80211_BAND_5GHZ)
188 rate += IWL_FIRST_OFDM_RATE;
189 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800190 rate_flags |= RATE_MCS_CCK_MSK;
Johannes Berg0b5b3ff2011-06-22 06:33:43 -0700191
192 tx_beacon_cmd->tx.rate_n_flags =
193 iwl_hw_set_rate_n_flags(rate, rate_flags);
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800194
Johannes Berg8a98d492011-04-29 09:48:14 -0700195 /* Submit command */
Johannes Berg4ce7cc22011-05-13 11:57:40 -0700196 cmd.len[0] = sizeof(*tx_beacon_cmd);
Johannes Berg3fa50732011-05-04 07:50:38 -0700197 cmd.data[0] = tx_beacon_cmd;
Johannes Berg4ce7cc22011-05-13 11:57:40 -0700198 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
199 cmd.len[1] = frame_size;
200 cmd.data[1] = priv->beacon_skb->data;
201 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
Johannes Berg2295c662010-10-23 09:15:41 -0700202
Johannes Berge10a0532012-03-06 13:30:39 -0800203 return iwl_dvm_send_cmd(priv, &cmd);
Samuel Ortiza8e74e272009-01-23 13:45:14 -0800204}
205
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700206static void iwl_bg_beacon_update(struct work_struct *work)
Zhu Yib481de92007-09-25 17:54:57 -0700207{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -0700208 struct iwl_priv *priv =
209 container_of(work, struct iwl_priv, beacon_update);
Zhu Yib481de92007-09-25 17:54:57 -0700210 struct sk_buff *beacon;
211
Johannes Bergb1eea292012-03-06 13:30:42 -0800212 mutex_lock(&priv->mutex);
Johannes Berg76d04812010-08-23 10:46:47 +0200213 if (!priv->beacon_ctx) {
214 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
215 goto out;
Zhu Yib481de92007-09-25 17:54:57 -0700216 }
217
Johannes Berg60744f62010-08-23 10:46:50 +0200218 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
219 /*
220 * The ucode will send beacon notifications even in
221 * IBSS mode, but we don't want to process them. But
222 * we need to defer the type check to here due to
223 * requiring locking around the beacon_ctx access.
224 */
225 goto out;
226 }
227
Johannes Berg76d04812010-08-23 10:46:47 +0200228 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
229 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
230 if (!beacon) {
Johannes Berg77834542010-10-04 05:50:36 -0700231 IWL_ERR(priv, "update beacon failed -- keeping old\n");
Johannes Berg76d04812010-08-23 10:46:47 +0200232 goto out;
233 }
234
Zhu Yib481de92007-09-25 17:54:57 -0700235 /* new beacon skb is allocated every time; dispose previous.*/
Johannes Berg77834542010-10-04 05:50:36 -0700236 dev_kfree_skb(priv->beacon_skb);
Zhu Yib481de92007-09-25 17:54:57 -0700237
Johannes Berg12e934d2010-10-04 05:50:06 -0700238 priv->beacon_skb = beacon;
Zhu Yib481de92007-09-25 17:54:57 -0700239
Johannes Berg2295c662010-10-23 09:15:41 -0700240 iwlagn_send_beacon_cmd(priv);
Johannes Berg76d04812010-08-23 10:46:47 +0200241 out:
Johannes Bergb1eea292012-03-06 13:30:42 -0800242 mutex_unlock(&priv->mutex);
Zhu Yib481de92007-09-25 17:54:57 -0700243}
244
Wey-Yi Guyfbba9412010-08-23 07:57:10 -0700245static void iwl_bg_bt_runtime_config(struct work_struct *work)
246{
247 struct iwl_priv *priv =
248 container_of(work, struct iwl_priv, bt_runtime_config);
249
Don Fry83626402012-03-07 09:52:37 -0800250 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Wey-Yi Guyfbba9412010-08-23 07:57:10 -0700251 return;
252
253 /* dont send host command if rf-kill is on */
Don Fry83626402012-03-07 09:52:37 -0800254 if (!iwl_is_ready_rf(priv))
Wey-Yi Guyfbba9412010-08-23 07:57:10 -0700255 return;
Wey-Yi Guye55b5172011-06-28 11:46:28 -0700256 iwlagn_send_advance_bt_config(priv);
Wey-Yi Guyfbba9412010-08-23 07:57:10 -0700257}
258
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700259static void iwl_bg_bt_full_concurrency(struct work_struct *work)
260{
261 struct iwl_priv *priv =
262 container_of(work, struct iwl_priv, bt_full_concurrency);
Johannes Berg246ed352010-08-23 10:46:32 +0200263 struct iwl_rxon_context *ctx;
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700264
Johannes Bergb1eea292012-03-06 13:30:42 -0800265 mutex_lock(&priv->mutex);
Stanislaw Gruszkadc1a4062011-03-31 17:36:27 +0200266
Don Fry83626402012-03-07 09:52:37 -0800267 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Stanislaw Gruszkadc1a4062011-03-31 17:36:27 +0200268 goto out;
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700269
270 /* dont send host command if rf-kill is on */
Don Fry83626402012-03-07 09:52:37 -0800271 if (!iwl_is_ready_rf(priv))
Stanislaw Gruszkadc1a4062011-03-31 17:36:27 +0200272 goto out;
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700273
274 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
275 priv->bt_full_concurrent ?
276 "full concurrency" : "3-wire");
277
278 /*
279 * LQ & RXON updated cmds must be sent before BT Config cmd
280 * to avoid 3-wire collisions
281 */
Johannes Berg246ed352010-08-23 10:46:32 +0200282 for_each_context(priv, ctx) {
Wey-Yi Guye3f10ce2011-07-01 07:59:26 -0700283 iwlagn_set_rxon_chain(priv, ctx);
Wey-Yi Guy805a3b82011-06-03 07:54:16 -0700284 iwlagn_commit_rxon(priv, ctx);
Johannes Berg246ed352010-08-23 10:46:32 +0200285 }
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700286
Wey-Yi Guye55b5172011-06-28 11:46:28 -0700287 iwlagn_send_advance_bt_config(priv);
Stanislaw Gruszkadc1a4062011-03-31 17:36:27 +0200288out:
Johannes Bergb1eea292012-03-06 13:30:42 -0800289 mutex_unlock(&priv->mutex);
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700290}
291
Meenakshi Venkataraman15911292012-03-14 15:49:37 -0700292int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
293{
294 struct iwl_statistics_cmd statistics_cmd = {
295 .configuration_flags =
296 clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
297 };
298
299 if (flags & CMD_ASYNC)
300 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
301 CMD_ASYNC,
302 sizeof(struct iwl_statistics_cmd),
303 &statistics_cmd);
304 else
305 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
306 CMD_SYNC,
307 sizeof(struct iwl_statistics_cmd),
308 &statistics_cmd);
309}
310
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800311/**
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700312 * iwl_bg_statistics_periodic - Timer callback to queue statistics
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800313 *
314 * This callback is provided in order to send a statistics request.
315 *
316 * This timer function is continually reset to execute within
317 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
318 * was received. We need to ensure we receive the statistics in order
319 * to update the temperature used for calibrating the TXPOWER.
320 */
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700321static void iwl_bg_statistics_periodic(unsigned long data)
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800322{
323 struct iwl_priv *priv = (struct iwl_priv *)data;
324
Don Fry83626402012-03-07 09:52:37 -0800325 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800326 return;
327
Mohamed Abbas61780ee2008-10-29 14:05:49 -0700328 /* dont send host command if rf-kill is on */
Don Fry83626402012-03-07 09:52:37 -0800329 if (!iwl_is_ready_rf(priv))
Mohamed Abbas61780ee2008-10-29 14:05:49 -0700330 return;
331
Wey-Yi Guyef8d5522009-11-13 11:56:28 -0800332 iwl_send_statistics_request(priv, CMD_ASYNC, false);
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800333}
334
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800335
336static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
337 u32 start_idx, u32 num_events,
Johannes Berg98d4bf02012-01-13 11:56:11 +0100338 u32 capacity, u32 mode)
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800339{
340 u32 i;
341 u32 ptr; /* SRAM byte address of log data */
342 u32 ev, time, data; /* event log data */
343 unsigned long reg_flags;
344
345 if (mode == 0)
346 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
347 else
348 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
349
350 /* Make sure device is powered up for SRAM reads */
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200351 spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
Stanislaw Gruszkabfe4b802012-03-07 09:52:24 -0800352 if (unlikely(!iwl_grab_nic_access(trans(priv)))) {
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200353 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800354 return;
355 }
356
357 /* Set starting address; reads will auto-increment */
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200358 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800359
360 /*
Johannes Berg98d4bf02012-01-13 11:56:11 +0100361 * Refuse to read more than would have fit into the log from
362 * the current start_idx. This used to happen due to the race
363 * described below, but now WARN because the code below should
364 * prevent it from happening here.
365 */
366 if (WARN_ON(num_events > capacity - start_idx))
367 num_events = capacity - start_idx;
368
369 /*
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800370 * "time" is actually "data" for mode 0 (no timestamp).
371 * place event id # at far right for easier visual parsing.
372 */
373 for (i = 0; i < num_events; i++) {
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200374 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
375 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800376 if (mode == 0) {
Johannes Berg6c1011e2012-03-06 13:30:48 -0800377 trace_iwlwifi_dev_ucode_cont_event(
378 trans(priv)->dev, 0, time, ev);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800379 } else {
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200380 data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
Johannes Berg6c1011e2012-03-06 13:30:48 -0800381 trace_iwlwifi_dev_ucode_cont_event(
382 trans(priv)->dev, time, data, ev);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800383 }
384 }
385 /* Allow device to power down */
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200386 iwl_release_nic_access(trans(priv));
387 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800388}
389
Johannes Berg875295f2010-01-22 14:22:55 -0800390static void iwl_continuous_event_trace(struct iwl_priv *priv)
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800391{
392 u32 capacity; /* event log capacity in # entries */
Johannes Berg98d4bf02012-01-13 11:56:11 +0100393 struct {
394 u32 capacity;
395 u32 mode;
396 u32 wrap_counter;
397 u32 write_counter;
398 } __packed read;
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800399 u32 base; /* SRAM byte address of event log header */
400 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
401 u32 num_wraps; /* # times uCode wrapped to top of log */
402 u32 next_entry; /* index of next entry to be written by uCode */
403
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -0700404 base = priv->device_pointers.log_event_table;
Fry, Donald H4caab322011-07-07 15:24:07 -0700405 if (iwlagn_hw_valid_rtc_data_addr(base)) {
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200406 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
Johannes Berg98d4bf02012-01-13 11:56:11 +0100407
408 capacity = read.capacity;
409 mode = read.mode;
410 num_wraps = read.wrap_counter;
411 next_entry = read.write_counter;
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800412 } else
413 return;
414
Johannes Berg98d4bf02012-01-13 11:56:11 +0100415 /*
416 * Unfortunately, the uCode doesn't use temporary variables.
417 * Therefore, it can happen that we read next_entry == capacity,
418 * which really means next_entry == 0.
419 */
420 if (unlikely(next_entry == capacity))
421 next_entry = 0;
422 /*
423 * Additionally, the uCode increases the write pointer before
424 * the wraps counter, so if the write pointer is smaller than
425 * the old write pointer (wrap occurred) but we read that no
426 * wrap occurred, we actually read between the next_entry and
427 * num_wraps update (this does happen in practice!!) -- take
428 * that into account by increasing num_wraps.
429 */
430 if (unlikely(next_entry < priv->event_log.next_entry &&
431 num_wraps == priv->event_log.num_wraps))
432 num_wraps++;
433
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800434 if (num_wraps == priv->event_log.num_wraps) {
Johannes Berg98d4bf02012-01-13 11:56:11 +0100435 iwl_print_cont_event_trace(
436 priv, base, priv->event_log.next_entry,
437 next_entry - priv->event_log.next_entry,
438 capacity, mode);
439
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800440 priv->event_log.non_wraps_count++;
441 } else {
Johannes Berg98d4bf02012-01-13 11:56:11 +0100442 if (num_wraps - priv->event_log.num_wraps > 1)
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800443 priv->event_log.wraps_more_count++;
444 else
445 priv->event_log.wraps_once_count++;
Johannes Berg98d4bf02012-01-13 11:56:11 +0100446
Johannes Berg6c1011e2012-03-06 13:30:48 -0800447 trace_iwlwifi_dev_ucode_wrap_event(trans(priv)->dev,
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800448 num_wraps - priv->event_log.num_wraps,
449 next_entry, priv->event_log.next_entry);
Johannes Berg98d4bf02012-01-13 11:56:11 +0100450
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800451 if (next_entry < priv->event_log.next_entry) {
Johannes Berg98d4bf02012-01-13 11:56:11 +0100452 iwl_print_cont_event_trace(
453 priv, base, priv->event_log.next_entry,
454 capacity - priv->event_log.next_entry,
455 capacity, mode);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800456
Johannes Berg98d4bf02012-01-13 11:56:11 +0100457 iwl_print_cont_event_trace(
458 priv, base, 0, next_entry, capacity, mode);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800459 } else {
Johannes Berg98d4bf02012-01-13 11:56:11 +0100460 iwl_print_cont_event_trace(
461 priv, base, next_entry,
462 capacity - next_entry,
463 capacity, mode);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800464
Johannes Berg98d4bf02012-01-13 11:56:11 +0100465 iwl_print_cont_event_trace(
466 priv, base, 0, next_entry, capacity, mode);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800467 }
468 }
Johannes Berg98d4bf02012-01-13 11:56:11 +0100469
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800470 priv->event_log.num_wraps = num_wraps;
471 priv->event_log.next_entry = next_entry;
472}
473
474/**
475 * iwl_bg_ucode_trace - Timer callback to log ucode event
476 *
477 * The timer is continually set to execute every
478 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
479 * this function is to perform continuous uCode event logging operation
480 * if enabled
481 */
482static void iwl_bg_ucode_trace(unsigned long data)
483{
484 struct iwl_priv *priv = (struct iwl_priv *)data;
485
Don Fry83626402012-03-07 09:52:37 -0800486 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800487 return;
488
489 if (priv->event_log.ucode_trace) {
490 iwl_continuous_event_trace(priv);
491 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
492 mod_timer(&priv->ucode_trace,
493 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
494 }
495}
496
Wey-Yi Guy65550632010-06-24 13:18:35 -0700497static void iwl_bg_tx_flush(struct work_struct *work)
498{
499 struct iwl_priv *priv =
500 container_of(work, struct iwl_priv, tx_flush);
501
Don Fry83626402012-03-07 09:52:37 -0800502 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Wey-Yi Guy65550632010-06-24 13:18:35 -0700503 return;
504
505 /* do nothing if rf-kill is on */
Don Fry83626402012-03-07 09:52:37 -0800506 if (!iwl_is_ready_rf(priv))
Wey-Yi Guy65550632010-06-24 13:18:35 -0700507 return;
508
Wey-Yi Guyc68744f2011-06-18 08:03:18 -0700509 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
510 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
Wey-Yi Guy65550632010-06-24 13:18:35 -0700511}
512
Johannes Berg9eae88f2012-03-15 13:26:52 -0700513/*
514 * queue/FIFO/AC mapping definitions
515 */
516
517#define IWL_TX_FIFO_BK 0 /* shared */
518#define IWL_TX_FIFO_BE 1
519#define IWL_TX_FIFO_VI 2 /* shared */
520#define IWL_TX_FIFO_VO 3
521#define IWL_TX_FIFO_BK_IPAN IWL_TX_FIFO_BK
522#define IWL_TX_FIFO_BE_IPAN 4
523#define IWL_TX_FIFO_VI_IPAN IWL_TX_FIFO_VI
524#define IWL_TX_FIFO_VO_IPAN 5
525/* re-uses the VO FIFO, uCode will properly flush/schedule */
526#define IWL_TX_FIFO_AUX 5
527#define IWL_TX_FIFO_UNUSED -1
528
529#define IWLAGN_CMD_FIFO_NUM 7
530
531/*
532 * This queue number is required for proper operation
533 * because the ucode will stop/start the scheduler as
534 * required.
535 */
536#define IWL_IPAN_MCAST_QUEUE 8
537
538static const u8 iwlagn_default_queue_to_tx_fifo[] = {
539 IWL_TX_FIFO_VO,
540 IWL_TX_FIFO_VI,
541 IWL_TX_FIFO_BE,
542 IWL_TX_FIFO_BK,
543 IWLAGN_CMD_FIFO_NUM,
544};
545
546static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
547 IWL_TX_FIFO_VO,
548 IWL_TX_FIFO_VI,
549 IWL_TX_FIFO_BE,
550 IWL_TX_FIFO_BK,
551 IWL_TX_FIFO_BK_IPAN,
552 IWL_TX_FIFO_BE_IPAN,
553 IWL_TX_FIFO_VI_IPAN,
554 IWL_TX_FIFO_VO_IPAN,
555 IWL_TX_FIFO_BE_IPAN,
556 IWLAGN_CMD_FIFO_NUM,
557 IWL_TX_FIFO_AUX,
558};
559
560static const u8 iwlagn_bss_ac_to_fifo[] = {
561 IWL_TX_FIFO_VO,
562 IWL_TX_FIFO_VI,
563 IWL_TX_FIFO_BE,
564 IWL_TX_FIFO_BK,
565};
566
567static const u8 iwlagn_bss_ac_to_queue[] = {
568 0, 1, 2, 3,
569};
570
571static const u8 iwlagn_pan_ac_to_fifo[] = {
572 IWL_TX_FIFO_VO_IPAN,
573 IWL_TX_FIFO_VI_IPAN,
574 IWL_TX_FIFO_BE_IPAN,
575 IWL_TX_FIFO_BK_IPAN,
576};
577
578static const u8 iwlagn_pan_ac_to_queue[] = {
579 7, 6, 5, 4,
580};
581
582static const u8 iwlagn_bss_queue_to_ac[] = {
583 IEEE80211_AC_VO,
584 IEEE80211_AC_VI,
585 IEEE80211_AC_BE,
586 IEEE80211_AC_BK,
587};
588
589static const u8 iwlagn_pan_queue_to_ac[] = {
590 IEEE80211_AC_VO,
591 IEEE80211_AC_VI,
592 IEEE80211_AC_BE,
593 IEEE80211_AC_BK,
594 IEEE80211_AC_BK,
595 IEEE80211_AC_BE,
596 IEEE80211_AC_VI,
597 IEEE80211_AC_VO,
598};
599
Johannes Berge6dd5832012-03-07 09:52:40 -0800600static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700601{
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700602 int i;
603
604 /*
605 * The default context is always valid,
606 * the PAN context depends on uCode.
607 */
Johannes Berga18f61b2012-03-15 13:26:53 -0700608 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700609 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
Johannes Berga18f61b2012-03-15 13:26:53 -0700610 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700611
612 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
613 priv->contexts[i].ctxid = i;
614
615 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
616 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
617 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
618 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
619 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
620 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
621 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
622 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
Don Fry87272af2012-01-25 15:26:34 -0800623 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700624 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
625 BIT(NL80211_IFTYPE_ADHOC);
626 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
627 BIT(NL80211_IFTYPE_STATION);
628 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
629 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
630 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
631 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
Johannes Berg9eae88f2012-03-15 13:26:52 -0700632 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
633 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
634 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
635 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700636
637 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
638 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
639 REPLY_WIPAN_RXON_TIMING;
640 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
641 REPLY_WIPAN_RXON_ASSOC;
642 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
643 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
644 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
645 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
646 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700647 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
648 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
Johannes Bergc6baf7f2011-07-23 10:24:47 -0700649
650 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
651 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
652 BIT(NL80211_IFTYPE_P2P_CLIENT) |
653 BIT(NL80211_IFTYPE_P2P_GO);
654
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700655 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
656 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
657 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
Johannes Berg9eae88f2012-03-15 13:26:52 -0700658 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
659 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
660 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
661 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
662 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700663
664 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
665}
666
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700667static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
668{
669 struct iwl_ct_kill_config cmd;
670 struct iwl_ct_kill_throttling_config adv_cmd;
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700671 int ret = 0;
672
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200673 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700674 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
Johannes Berg08ae86a2012-03-05 11:24:27 -0800675
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700676 priv->thermal_throttle.ct_kill_toggle = false;
677
Don Fry38622412011-12-16 07:07:36 -0800678 if (cfg(priv)->base_params->support_ct_kill_exit) {
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700679 adv_cmd.critical_temperature_enter =
Johannes Berg9e295112012-04-09 17:46:55 -0700680 cpu_to_le32(priv->hw_params.ct_kill_threshold);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700681 adv_cmd.critical_temperature_exit =
Johannes Berg9e295112012-04-09 17:46:55 -0700682 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700683
Johannes Berge10a0532012-03-06 13:30:39 -0800684 ret = iwl_dvm_send_cmd_pdu(priv,
Emmanuel Grumbache419d622011-07-08 08:46:14 -0700685 REPLY_CT_KILL_CONFIG_CMD,
686 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700687 if (ret)
688 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
689 else
690 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
Emmanuel Grumbachd6189122011-08-25 23:10:39 -0700691 "succeeded, critical temperature enter is %d,"
692 "exit is %d\n",
Johannes Berg9e295112012-04-09 17:46:55 -0700693 priv->hw_params.ct_kill_threshold,
694 priv->hw_params.ct_kill_exit_threshold);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700695 } else {
696 cmd.critical_temperature_R =
Johannes Berg9e295112012-04-09 17:46:55 -0700697 cpu_to_le32(priv->hw_params.ct_kill_threshold);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700698
Johannes Berge10a0532012-03-06 13:30:39 -0800699 ret = iwl_dvm_send_cmd_pdu(priv,
Emmanuel Grumbache419d622011-07-08 08:46:14 -0700700 REPLY_CT_KILL_CONFIG_CMD,
701 CMD_SYNC, sizeof(cmd), &cmd);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700702 if (ret)
703 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
704 else
705 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
Emmanuel Grumbachd6189122011-08-25 23:10:39 -0700706 "succeeded, "
707 "critical temperature is %d\n",
Johannes Berg9e295112012-04-09 17:46:55 -0700708 priv->hw_params.ct_kill_threshold);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700709 }
710}
711
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -0700712static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
713{
714 struct iwl_calib_cfg_cmd calib_cfg_cmd;
715 struct iwl_host_cmd cmd = {
716 .id = CALIBRATION_CFG_CMD,
Johannes Berg3fa50732011-05-04 07:50:38 -0700717 .len = { sizeof(struct iwl_calib_cfg_cmd), },
718 .data = { &calib_cfg_cmd, },
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -0700719 };
720
721 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
Wey-Yi Guyaf4dc882011-10-04 07:10:19 -0700722 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -0700723 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -0700724
Johannes Berge10a0532012-03-06 13:30:39 -0800725 return iwl_dvm_send_cmd(priv, &cmd);
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -0700726}
727
728
Wey-Yi Guye505c432011-07-07 08:27:41 -0700729static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
730{
731 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
732 .valid = cpu_to_le32(valid_tx_ant),
733 };
734
Johannes Berg0692fe42012-03-06 13:30:37 -0800735 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
Wey-Yi Guye505c432011-07-07 08:27:41 -0700736 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
Johannes Berge10a0532012-03-06 13:30:39 -0800737 return iwl_dvm_send_cmd_pdu(priv,
Wey-Yi Guye505c432011-07-07 08:27:41 -0700738 TX_ANT_CONFIGURATION_CMD,
739 CMD_SYNC,
740 sizeof(struct iwl_tx_ant_config_cmd),
741 &tx_ant_cmd);
742 } else {
743 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
744 return -EOPNOTSUPP;
745 }
746}
747
Meenakshi Venkataramane4c52ab2012-03-13 18:23:51 -0700748static void iwl_send_bt_config(struct iwl_priv *priv)
749{
750 struct iwl_bt_cmd bt_cmd = {
751 .lead_time = BT_LEAD_TIME_DEF,
752 .max_kill = BT_MAX_KILL_DEF,
753 .kill_ack_mask = 0,
754 .kill_cts_mask = 0,
755 };
756
757 if (!iwlagn_mod_params.bt_coex_active)
758 bt_cmd.flags = BT_COEX_DISABLE;
759 else
760 bt_cmd.flags = BT_COEX_ENABLE;
761
762 priv->bt_enable_flag = bt_cmd.flags;
763 IWL_DEBUG_INFO(priv, "BT coex %s\n",
764 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
765
766 if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
767 CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
768 IWL_ERR(priv, "failed to send BT Coex Config\n");
769}
770
Zhu Yib481de92007-09-25 17:54:57 -0700771/**
Tomas Winkler4a4a9e82008-05-29 16:34:54 +0800772 * iwl_alive_start - called after REPLY_ALIVE notification received
Zhu Yib481de92007-09-25 17:54:57 -0700773 * from protocol/runtime uCode (initialization uCode's
Tomas Winkler4a4a9e82008-05-29 16:34:54 +0800774 * Alive gets handled by iwl_init_alive_start()).
Zhu Yib481de92007-09-25 17:54:57 -0700775 */
Cindy H. Kao4613e722011-05-06 10:40:15 -0700776int iwl_alive_start(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700777{
Tomas Winkler57aab752008-04-14 21:16:03 -0700778 int ret = 0;
Johannes Berg246ed352010-08-23 10:46:32 +0200779 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
Zhu Yib481de92007-09-25 17:54:57 -0700780
Tomas Winklere1623442009-01-27 14:27:56 -0800781 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
Zhu Yib481de92007-09-25 17:54:57 -0700782
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700783 /* After the ALIVE response, we can send host commands to the uCode */
Don Fry83626402012-03-07 09:52:37 -0800784 set_bit(STATUS_ALIVE, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -0700785
Don Fry83626402012-03-07 09:52:37 -0800786 if (iwl_is_rfkill(priv))
Johannes Bergca7966c2011-04-22 10:15:23 -0700787 return -ERFKILL;
Zhu Yib481de92007-09-25 17:54:57 -0700788
Johannes Berg98d4bf02012-01-13 11:56:11 +0100789 if (priv->event_log.ucode_trace) {
790 /* start collecting data now */
791 mod_timer(&priv->ucode_trace, jiffies);
792 }
793
Wey-Yi Guybc795df2010-10-11 14:24:05 -0700794 /* download priority table before any calibration request */
Don Fry38622412011-12-16 07:07:36 -0800795 if (cfg(priv)->bt_params &&
796 cfg(priv)->bt_params->advanced_bt_coexist) {
Wey-Yi Guyf7322f82010-08-23 15:24:49 -0700797 /* Configure Bluetooth device coexistence support */
Don Fry38622412011-12-16 07:07:36 -0800798 if (cfg(priv)->bt_params->bt_sco_disable)
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -0700799 priv->bt_enable_pspoll = false;
800 else
801 priv->bt_enable_pspoll = true;
802
Wey-Yi Guyf7322f82010-08-23 15:24:49 -0700803 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
804 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
805 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
Wey-Yi Guye55b5172011-06-28 11:46:28 -0700806 iwlagn_send_advance_bt_config(priv);
Wey-Yi Guyf7322f82010-08-23 15:24:49 -0700807 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -0700808 priv->cur_rssi_ctx = NULL;
809
Johannes Berge1991882012-03-06 13:30:36 -0800810 iwl_send_prio_tbl(priv);
Wey-Yi Guyf7322f82010-08-23 15:24:49 -0700811
812 /* FIXME: w/a to force change uCode BT state machine */
Johannes Berge1991882012-03-06 13:30:36 -0800813 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
Johannes Bergca7966c2011-04-22 10:15:23 -0700814 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
815 if (ret)
816 return ret;
Johannes Berge1991882012-03-06 13:30:36 -0800817 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
Johannes Bergca7966c2011-04-22 10:15:23 -0700818 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
819 if (ret)
820 return ret;
Wey-Yi Guye55b5172011-06-28 11:46:28 -0700821 } else {
822 /*
823 * default is 2-wire BT coexexistence support
824 */
825 iwl_send_bt_config(priv);
Wey-Yi Guyf7322f82010-08-23 15:24:49 -0700826 }
Wey-Yi Guye55b5172011-06-28 11:46:28 -0700827
Venkataraman, Meenakshi885765f2011-12-14 16:54:21 -0800828 /*
829 * Perform runtime calibrations, including DC calibration.
830 */
831 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
Wey-Yi Guybc795df2010-10-11 14:24:05 -0700832
Johannes Berg36d68252008-05-15 12:55:26 +0200833 ieee80211_wake_queues(priv->hw);
Zhu Yib481de92007-09-25 17:54:57 -0700834
Wey-Yi Guy2f748de2009-09-17 10:43:51 -0700835 /* Configure Tx antenna selection based on H/W config */
Johannes Berg9e295112012-04-09 17:46:55 -0700836 iwlagn_send_tx_ant_config(priv, priv->hw_params.valid_tx_ant);
Wey-Yi Guy2f748de2009-09-17 10:43:51 -0700837
Johannes Berg15b86bf2012-03-05 11:24:36 -0800838 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
Gregory Greenmanc1adf9f2008-05-15 13:53:59 +0800839 struct iwl_rxon_cmd *active_rxon =
Johannes Berg246ed352010-08-23 10:46:32 +0200840 (struct iwl_rxon_cmd *)&ctx->active;
Mohamed Abbas019fb972009-03-17 21:59:18 -0700841 /* apply any changes in staging */
Johannes Berg246ed352010-08-23 10:46:32 +0200842 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
Zhu Yib481de92007-09-25 17:54:57 -0700843 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
844 } else {
Johannes Bergd0fe4782010-08-23 10:46:58 +0200845 struct iwl_rxon_context *tmp;
Zhu Yib481de92007-09-25 17:54:57 -0700846 /* Initialize our rx_config data */
Johannes Bergd0fe4782010-08-23 10:46:58 +0200847 for_each_context(priv, tmp)
848 iwl_connection_init_rx_config(priv, tmp);
Abhijeet Kolekar45823532009-04-08 11:26:44 -0700849
Wey-Yi Guye3f10ce2011-07-01 07:59:26 -0700850 iwlagn_set_rxon_chain(priv, ctx);
Zhu Yib481de92007-09-25 17:54:57 -0700851 }
852
Johannes Berg15b86bf2012-03-05 11:24:36 -0800853 if (!priv->wowlan) {
Johannes Bergc8ac61c2011-07-15 13:23:45 -0700854 /* WoWLAN ucode will not reply in the same way, skip it */
855 iwl_reset_run_time_calib(priv);
856 }
Tomas Winkler4a4a9e82008-05-29 16:34:54 +0800857
Don Fry83626402012-03-07 09:52:37 -0800858 set_bit(STATUS_READY, &priv->status);
Wey-Yi Guy9e2e7422010-11-12 13:52:37 -0800859
Zhu Yib481de92007-09-25 17:54:57 -0700860 /* Configure the adapter for unassociated operation */
Wey-Yi Guy805a3b82011-06-03 07:54:16 -0700861 ret = iwlagn_commit_rxon(priv, ctx);
Johannes Bergca7966c2011-04-22 10:15:23 -0700862 if (ret)
863 return ret;
Zhu Yib481de92007-09-25 17:54:57 -0700864
865 /* At this point, the NIC is initialized and operational */
Emmanuel Grumbach47f4a582008-06-12 09:47:13 +0800866 iwl_rf_kill_ct_config(priv);
Zhu Yi5a66926a2008-01-14 17:46:18 -0800867
Tomas Winklere1623442009-01-27 14:27:56 -0800868 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
Zhu Yib481de92007-09-25 17:54:57 -0700869
Johannes Bergca7966c2011-04-22 10:15:23 -0700870 return iwl_power_update_mode(priv, true);
Zhu Yib481de92007-09-25 17:54:57 -0700871}
872
Johannes Bergd3163832012-03-05 11:24:19 -0800873/**
874 * iwl_clear_driver_stations - clear knowledge of all stations from driver
875 * @priv: iwl priv struct
876 *
877 * This is called during iwl_down() to make sure that in the case
878 * we're coming there from a hardware restart mac80211 will be
879 * able to reconfigure stations -- if we're getting there in the
880 * normal down flow then the stations will already be cleared.
881 */
882static void iwl_clear_driver_stations(struct iwl_priv *priv)
883{
Johannes Bergd3163832012-03-05 11:24:19 -0800884 struct iwl_rxon_context *ctx;
885
Johannes Bergfa23cb02012-03-05 11:24:25 -0800886 spin_lock_bh(&priv->sta_lock);
Johannes Bergd3163832012-03-05 11:24:19 -0800887 memset(priv->stations, 0, sizeof(priv->stations));
888 priv->num_stations = 0;
889
890 priv->ucode_key_table = 0;
891
892 for_each_context(priv, ctx) {
893 /*
894 * Remove all key information that is not stored as part
895 * of station information since mac80211 may not have had
896 * a chance to remove all the keys. When device is
897 * reconfigured by mac80211 after an error all keys will
898 * be reconfigured.
899 */
900 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
901 ctx->key_mapping_keys = 0;
902 }
903
Johannes Bergfa23cb02012-03-05 11:24:25 -0800904 spin_unlock_bh(&priv->sta_lock);
Johannes Bergd3163832012-03-05 11:24:19 -0800905}
906
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -0800907void iwl_down(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700908{
Dan Carpenter22dd2fd2011-03-15 10:03:24 +0300909 int exit_pending;
Zhu Yib481de92007-09-25 17:54:57 -0700910
Tomas Winklere1623442009-01-27 14:27:56 -0800911 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
Zhu Yib481de92007-09-25 17:54:57 -0700912
Johannes Bergb1eea292012-03-06 13:30:42 -0800913 lockdep_assert_held(&priv->mutex);
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -0800914
Stanislaw Gruszkad745d472010-09-13 14:46:35 +0200915 iwl_scan_cancel_timeout(priv, 200);
916
Johannes Bergc6baf7f2011-07-23 10:24:47 -0700917 /*
918 * If active, scanning won't cancel it, so say it expired.
919 * No race since we hold the mutex here and a new one
920 * can't come in at this time.
921 */
922 ieee80211_remain_on_channel_expired(priv->hw);
923
Emmanuel Grumbach63013ae2011-08-25 23:10:42 -0700924 exit_pending =
Don Fry83626402012-03-07 09:52:37 -0800925 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -0700926
Johannes Bergdcef7322010-08-27 08:55:52 -0700927 iwl_clear_ucode_stations(priv, NULL);
Johannes Berga194e322010-08-27 08:53:46 -0700928 iwl_dealloc_bcast_stations(priv);
Johannes Bergdb125c72010-05-07 01:49:15 -0700929 iwl_clear_driver_stations(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700930
Johannes Berga1174132010-08-23 07:56:59 -0700931 /* reset BT coex data */
Wey-Yi Guyda5dbb92010-08-23 07:57:13 -0700932 priv->bt_status = 0;
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -0700933 priv->cur_rssi_ctx = NULL;
934 priv->bt_is_sco = 0;
Don Fry38622412011-12-16 07:07:36 -0800935 if (cfg(priv)->bt_params)
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -0700936 priv->bt_traffic_load =
Don Fry38622412011-12-16 07:07:36 -0800937 cfg(priv)->bt_params->bt_init_traffic_load;
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -0700938 else
939 priv->bt_traffic_load = 0;
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700940 priv->bt_full_concurrent = false;
941 priv->bt_ci_compliance = 0;
Johannes Berga1174132010-08-23 07:56:59 -0700942
Zhu Yib481de92007-09-25 17:54:57 -0700943 /* Wipe out the EXIT_PENDING status bit if we are not actually
944 * exiting the module */
945 if (!exit_pending)
Don Fry83626402012-03-07 09:52:37 -0800946 clear_bit(STATUS_EXIT_PENDING, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -0700947
Emmanuel Grumbach859cfb02011-09-15 11:46:31 -0700948 if (priv->mac80211_registered)
Zhu Yib481de92007-09-25 17:54:57 -0700949 ieee80211_stop_queues(priv->hw);
950
David Spinadel8f7ffbe2012-03-10 13:00:10 -0800951 priv->ucode_loaded = false;
Emmanuel Grumbach909e9b22011-09-15 11:46:30 -0700952 iwl_trans_stop_device(trans(priv));
953
Johannes Berg1a10f432011-04-13 03:14:44 -0700954 /* Clear out all status bits but a few that are stable across reset */
Don Fry1353a7b2012-03-07 09:52:43 -0800955 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
Zhu Yib481de92007-09-25 17:54:57 -0700956 STATUS_RF_KILL_HW |
Don Fry83626402012-03-07 09:52:37 -0800957 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
Reinette Chatre97888642008-02-06 11:20:38 -0800958 STATUS_GEO_CONFIGURED |
Don Fry17acd0b2012-03-15 13:27:05 -0700959 test_bit(STATUS_FW_ERROR, &priv->status) <<
960 STATUS_FW_ERROR |
Don Fry83626402012-03-07 09:52:37 -0800961 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
Mohamed Abbas052ec3f2008-06-30 17:23:15 +0800962 STATUS_EXIT_PENDING;
Zhu Yib481de92007-09-25 17:54:57 -0700963
Johannes Berg77834542010-10-04 05:50:36 -0700964 dev_kfree_skb(priv->beacon_skb);
Johannes Berg12e934d2010-10-04 05:50:06 -0700965 priv->beacon_skb = NULL;
Zhu Yib481de92007-09-25 17:54:57 -0700966}
967
Zhu Yib481de92007-09-25 17:54:57 -0700968/*****************************************************************************
969 *
970 * Workqueue callbacks
971 *
972 *****************************************************************************/
973
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +0800974static void iwl_bg_run_time_calib_work(struct work_struct *work)
975{
976 struct iwl_priv *priv = container_of(work, struct iwl_priv,
977 run_time_calib_work);
978
Johannes Bergb1eea292012-03-06 13:30:42 -0800979 mutex_lock(&priv->mutex);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +0800980
Don Fry83626402012-03-07 09:52:37 -0800981 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
982 test_bit(STATUS_SCANNING, &priv->status)) {
Johannes Bergb1eea292012-03-06 13:30:42 -0800983 mutex_unlock(&priv->mutex);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +0800984 return;
985 }
986
987 if (priv->start_calib) {
Johannes Berg0da0e5b2011-04-08 08:14:56 -0700988 iwl_chain_noise_calibration(priv);
989 iwl_sensitivity_calibration(priv);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +0800990 }
991
Johannes Bergb1eea292012-03-06 13:30:42 -0800992 mutex_unlock(&priv->mutex);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +0800993}
994
Wey-Yi Guy73356132011-11-10 06:55:11 -0800995void iwlagn_prepare_restart(struct iwl_priv *priv)
Johannes Berge43e85c2011-04-19 07:45:16 -0700996{
997 struct iwl_rxon_context *ctx;
998 bool bt_full_concurrent;
999 u8 bt_ci_compliance;
1000 u8 bt_load;
1001 u8 bt_status;
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -07001002 bool bt_is_sco;
Johannes Berg9eae88f2012-03-15 13:26:52 -07001003 int i;
Johannes Berge43e85c2011-04-19 07:45:16 -07001004
Johannes Bergb1eea292012-03-06 13:30:42 -08001005 lockdep_assert_held(&priv->mutex);
Johannes Berge43e85c2011-04-19 07:45:16 -07001006
1007 for_each_context(priv, ctx)
1008 ctx->vif = NULL;
1009 priv->is_open = 0;
1010
1011 /*
1012 * __iwl_down() will clear the BT status variables,
1013 * which is correct, but when we restart we really
1014 * want to keep them so restore them afterwards.
1015 *
1016 * The restart process will later pick them up and
1017 * re-configure the hw when we reconfigure the BT
1018 * command.
1019 */
1020 bt_full_concurrent = priv->bt_full_concurrent;
1021 bt_ci_compliance = priv->bt_ci_compliance;
1022 bt_load = priv->bt_traffic_load;
1023 bt_status = priv->bt_status;
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -07001024 bt_is_sco = priv->bt_is_sco;
Johannes Berge43e85c2011-04-19 07:45:16 -07001025
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -08001026 iwl_down(priv);
Johannes Berge43e85c2011-04-19 07:45:16 -07001027
1028 priv->bt_full_concurrent = bt_full_concurrent;
1029 priv->bt_ci_compliance = bt_ci_compliance;
1030 priv->bt_traffic_load = bt_load;
1031 priv->bt_status = bt_status;
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -07001032 priv->bt_is_sco = bt_is_sco;
Johannes Berg9eae88f2012-03-15 13:26:52 -07001033
1034 /* reset all queues */
1035 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1036 atomic_set(&priv->ac_stop_count[i], 0);
1037
1038 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1039 priv->queue_to_ac[i] = IWL_INVALID_AC;
1040
1041 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
Johannes Berge43e85c2011-04-19 07:45:16 -07001042}
1043
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001044static void iwl_bg_restart(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07001045{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07001046 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
Zhu Yib481de92007-09-25 17:54:57 -07001047
Don Fry83626402012-03-07 09:52:37 -08001048 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Zhu Yib481de92007-09-25 17:54:57 -07001049 return;
1050
Don Fry17acd0b2012-03-15 13:27:05 -07001051 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
Johannes Bergb1eea292012-03-06 13:30:42 -08001052 mutex_lock(&priv->mutex);
Johannes Berge43e85c2011-04-19 07:45:16 -07001053 iwlagn_prepare_restart(priv);
Johannes Bergb1eea292012-03-06 13:30:42 -08001054 mutex_unlock(&priv->mutex);
Johannes Berga1174132010-08-23 07:56:59 -07001055 iwl_cancel_deferred_work(priv);
Johannes Berg19cc1082009-05-08 13:44:36 -07001056 ieee80211_restart_hw(priv->hw);
1057 } else {
Johannes Bergca7966c2011-04-22 10:15:23 -07001058 WARN_ON(1);
Johannes Berg19cc1082009-05-08 13:44:36 -07001059 }
Zhu Yib481de92007-09-25 17:54:57 -07001060}
1061
Wey-Yi Guy716c74b2010-06-24 13:22:36 -07001062
Wey-Yi Guy716c74b2010-06-24 13:22:36 -07001063
Wey-Yi Guy716c74b2010-06-24 13:22:36 -07001064
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001065void iwlagn_disable_roc(struct iwl_priv *priv)
Johannes Berg9b9190d2011-01-06 08:07:10 -08001066{
1067 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
Johannes Berg9b9190d2011-01-06 08:07:10 -08001068
Johannes Bergb1eea292012-03-06 13:30:42 -08001069 lockdep_assert_held(&priv->mutex);
Johannes Berg9b9190d2011-01-06 08:07:10 -08001070
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001071 if (!priv->hw_roc_setup)
Johannes Berg9b9190d2011-01-06 08:07:10 -08001072 return;
1073
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001074 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
Johannes Berg9b9190d2011-01-06 08:07:10 -08001075 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
Johannes Berg9b9190d2011-01-06 08:07:10 -08001076
Wey-Yi Guy898ed672011-07-13 08:38:57 -07001077 priv->hw_roc_channel = NULL;
Johannes Berg9b9190d2011-01-06 08:07:10 -08001078
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001079 memset(ctx->staging.node_addr, 0, ETH_ALEN);
1080
Wey-Yi Guy805a3b82011-06-03 07:54:16 -07001081 iwlagn_commit_rxon(priv, ctx);
Johannes Berg9b9190d2011-01-06 08:07:10 -08001082
1083 ctx->is_active = false;
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001084 priv->hw_roc_setup = false;
Johannes Berg9b9190d2011-01-06 08:07:10 -08001085}
1086
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001087static void iwlagn_disable_roc_work(struct work_struct *work)
Johannes Berg9b9190d2011-01-06 08:07:10 -08001088{
1089 struct iwl_priv *priv = container_of(work, struct iwl_priv,
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001090 hw_roc_disable_work.work);
Johannes Berg9b9190d2011-01-06 08:07:10 -08001091
Johannes Bergb1eea292012-03-06 13:30:42 -08001092 mutex_lock(&priv->mutex);
Johannes Berg9b9190d2011-01-06 08:07:10 -08001093 iwlagn_disable_roc(priv);
Johannes Bergb1eea292012-03-06 13:30:42 -08001094 mutex_unlock(&priv->mutex);
Johannes Berg9b9190d2011-01-06 08:07:10 -08001095}
1096
Zhu Yib481de92007-09-25 17:54:57 -07001097/*****************************************************************************
1098 *
Zhu Yib481de92007-09-25 17:54:57 -07001099 * driver setup and teardown
1100 *
1101 *****************************************************************************/
1102
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08001103static void iwl_setup_deferred_work(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001104{
Johannes Berg1ee158d2012-02-17 10:07:44 -08001105 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
Zhu Yib481de92007-09-25 17:54:57 -07001106
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001107 INIT_WORK(&priv->restart, iwl_bg_restart);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001108 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +08001109 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
Wey-Yi Guy65550632010-06-24 13:18:35 -07001110 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
Wey-Yi Guybee008b2010-08-23 07:57:04 -07001111 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
Wey-Yi Guyfbba9412010-08-23 07:57:10 -07001112 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001113 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1114 iwlagn_disable_roc_work);
Tomas Winkler2a421b92008-06-12 09:47:10 +08001115
Tomas Winkler2a421b92008-06-12 09:47:10 +08001116 iwl_setup_scan_deferred_work(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001117
Johannes Berg562f08e2012-03-07 09:52:18 -08001118 if (cfg(priv)->bt_params)
1119 iwlagn_bt_setup_deferred_work(priv);
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08001120
1121 init_timer(&priv->statistics_periodic);
1122 priv->statistics_periodic.data = (unsigned long)priv;
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001123 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
Zhu Yib481de92007-09-25 17:54:57 -07001124
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -08001125 init_timer(&priv->ucode_trace);
1126 priv->ucode_trace.data = (unsigned long)priv;
1127 priv->ucode_trace.function = iwl_bg_ucode_trace;
Zhu Yib481de92007-09-25 17:54:57 -07001128}
1129
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -08001130void iwl_cancel_deferred_work(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001131{
Johannes Berg562f08e2012-03-07 09:52:18 -08001132 if (cfg(priv)->bt_params)
1133 iwlagn_bt_cancel_deferred_work(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001134
Wey-Yi Guy815e6292010-06-03 10:14:01 -07001135 cancel_work_sync(&priv->run_time_calib_work);
Zhu Yib481de92007-09-25 17:54:57 -07001136 cancel_work_sync(&priv->beacon_update);
Stanislaw Gruszkae7e16b92010-09-13 14:46:41 +02001137
1138 iwl_cancel_scan_deferred_work(priv);
1139
Wey-Yi Guybee008b2010-08-23 07:57:04 -07001140 cancel_work_sync(&priv->bt_full_concurrency);
Wey-Yi Guyfbba9412010-08-23 07:57:10 -07001141 cancel_work_sync(&priv->bt_runtime_config);
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001142 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
Stanislaw Gruszkae7e16b92010-09-13 14:46:41 +02001143
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08001144 del_timer_sync(&priv->statistics_periodic);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -08001145 del_timer_sync(&priv->ucode_trace);
Zhu Yib481de92007-09-25 17:54:57 -07001146}
1147
Johannes Berg03dadf92012-03-07 09:52:13 -08001148static void iwl_init_hw_rates(struct ieee80211_rate *rates)
Reinette Chatre89f186a2009-10-30 14:36:11 -07001149{
1150 int i;
1151
1152 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1153 rates[i].bitrate = iwl_rates[i].ieee * 5;
1154 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1155 rates[i].hw_value_short = i;
1156 rates[i].flags = 0;
1157 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1158 /*
1159 * If CCK != 1M then set short preamble rate flag.
1160 */
1161 rates[i].flags |=
1162 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1163 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1164 }
1165 }
1166}
1167
Meenakshi Venkataraman533b4262012-03-15 13:26:58 -07001168#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
1169#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
1170static void iwl_init_ht_hw_capab(const struct iwl_priv *priv,
1171 struct ieee80211_sta_ht_cap *ht_info,
1172 enum ieee80211_band band)
1173{
1174 u16 max_bit_rate = 0;
Johannes Berg9e295112012-04-09 17:46:55 -07001175 u8 rx_chains_num = priv->hw_params.rx_chains_num;
1176 u8 tx_chains_num = priv->hw_params.tx_chains_num;
Meenakshi Venkataraman533b4262012-03-15 13:26:58 -07001177
1178 ht_info->cap = 0;
1179 memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1180
1181 ht_info->ht_supported = true;
1182
1183 if (cfg(priv)->ht_params &&
1184 cfg(priv)->ht_params->ht_greenfield_support)
1185 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
1186 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1187 max_bit_rate = MAX_BIT_RATE_20_MHZ;
Johannes Berg9e295112012-04-09 17:46:55 -07001188 if (priv->hw_params.ht40_channel & BIT(band)) {
Meenakshi Venkataraman533b4262012-03-15 13:26:58 -07001189 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1190 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1191 ht_info->mcs.rx_mask[4] = 0x01;
1192 max_bit_rate = MAX_BIT_RATE_40_MHZ;
1193 }
1194
1195 if (iwlagn_mod_params.amsdu_size_8K)
1196 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1197
1198 ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
1199 ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
1200
1201 ht_info->mcs.rx_mask[0] = 0xFF;
1202 if (rx_chains_num >= 2)
1203 ht_info->mcs.rx_mask[1] = 0xFF;
1204 if (rx_chains_num >= 3)
1205 ht_info->mcs.rx_mask[2] = 0xFF;
1206
1207 /* Highest supported Rx data rate */
1208 max_bit_rate *= rx_chains_num;
1209 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
1210 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
1211
1212 /* Tx MCS capabilities */
1213 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1214 if (tx_chains_num != rx_chains_num) {
1215 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1216 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
1217 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
1218 }
1219}
1220
1221/**
1222 * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
1223 */
1224static int iwl_init_geos(struct iwl_priv *priv)
1225{
1226 struct iwl_channel_info *ch;
1227 struct ieee80211_supported_band *sband;
1228 struct ieee80211_channel *channels;
1229 struct ieee80211_channel *geo_ch;
1230 struct ieee80211_rate *rates;
1231 int i = 0;
1232 s8 max_tx_power = IWLAGN_TX_POWER_TARGET_POWER_MIN;
1233
1234 if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
1235 priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
1236 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
1237 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1238 return 0;
1239 }
1240
1241 channels = kcalloc(priv->channel_count,
1242 sizeof(struct ieee80211_channel), GFP_KERNEL);
1243 if (!channels)
1244 return -ENOMEM;
1245
1246 rates = kcalloc(IWL_RATE_COUNT_LEGACY, sizeof(struct ieee80211_rate),
1247 GFP_KERNEL);
1248 if (!rates) {
1249 kfree(channels);
1250 return -ENOMEM;
1251 }
1252
1253 /* 5.2GHz channels start after the 2.4GHz channels */
1254 sband = &priv->bands[IEEE80211_BAND_5GHZ];
1255 sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
1256 /* just OFDM */
1257 sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
1258 sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
1259
Johannes Berg9e295112012-04-09 17:46:55 -07001260 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
Meenakshi Venkataraman533b4262012-03-15 13:26:58 -07001261 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1262 IEEE80211_BAND_5GHZ);
1263
1264 sband = &priv->bands[IEEE80211_BAND_2GHZ];
1265 sband->channels = channels;
1266 /* OFDM & CCK */
1267 sband->bitrates = rates;
1268 sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
1269
Johannes Berg9e295112012-04-09 17:46:55 -07001270 if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
Meenakshi Venkataraman533b4262012-03-15 13:26:58 -07001271 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1272 IEEE80211_BAND_2GHZ);
1273
1274 priv->ieee_channels = channels;
1275 priv->ieee_rates = rates;
1276
1277 for (i = 0; i < priv->channel_count; i++) {
1278 ch = &priv->channel_info[i];
1279
1280 /* FIXME: might be removed if scan is OK */
1281 if (!is_channel_valid(ch))
1282 continue;
1283
1284 sband = &priv->bands[ch->band];
1285
1286 geo_ch = &sband->channels[sband->n_channels++];
1287
1288 geo_ch->center_freq =
1289 ieee80211_channel_to_frequency(ch->channel, ch->band);
1290 geo_ch->max_power = ch->max_power_avg;
1291 geo_ch->max_antenna_gain = 0xff;
1292 geo_ch->hw_value = ch->channel;
1293
1294 if (is_channel_valid(ch)) {
1295 if (!(ch->flags & EEPROM_CHANNEL_IBSS))
1296 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
1297
1298 if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
1299 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
1300
1301 if (ch->flags & EEPROM_CHANNEL_RADAR)
1302 geo_ch->flags |= IEEE80211_CHAN_RADAR;
1303
1304 geo_ch->flags |= ch->ht40_extension_channel;
1305
1306 if (ch->max_power_avg > max_tx_power)
1307 max_tx_power = ch->max_power_avg;
1308 } else {
1309 geo_ch->flags |= IEEE80211_CHAN_DISABLED;
1310 }
1311
1312 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
1313 ch->channel, geo_ch->center_freq,
1314 is_channel_a_band(ch) ? "5.2" : "2.4",
1315 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
1316 "restricted" : "valid",
1317 geo_ch->flags);
1318 }
1319
1320 priv->tx_power_device_lmt = max_tx_power;
1321 priv->tx_power_user_lmt = max_tx_power;
1322 priv->tx_power_next = max_tx_power;
1323
1324 if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
Johannes Berg9e295112012-04-09 17:46:55 -07001325 priv->hw_params.sku & EEPROM_SKU_CAP_BAND_52GHZ) {
Meenakshi Venkataraman533b4262012-03-15 13:26:58 -07001326 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
1327 "Please send your %s to maintainer.\n",
1328 trans(priv)->hw_id_str);
Johannes Berg9e295112012-04-09 17:46:55 -07001329 priv->hw_params.sku &= ~EEPROM_SKU_CAP_BAND_52GHZ;
Meenakshi Venkataraman533b4262012-03-15 13:26:58 -07001330 }
1331
1332 IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
1333 priv->bands[IEEE80211_BAND_2GHZ].n_channels,
1334 priv->bands[IEEE80211_BAND_5GHZ].n_channels);
1335
1336 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1337
1338 return 0;
1339}
1340
1341/*
1342 * iwl_free_geos - undo allocations in iwl_init_geos
1343 */
1344static void iwl_free_geos(struct iwl_priv *priv)
1345{
1346 kfree(priv->ieee_channels);
1347 kfree(priv->ieee_rates);
1348 clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
1349}
1350
Reinette Chatre89f186a2009-10-30 14:36:11 -07001351static int iwl_init_drv(struct iwl_priv *priv)
1352{
1353 int ret;
1354
Johannes Bergfa23cb02012-03-05 11:24:25 -08001355 spin_lock_init(&priv->sta_lock);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001356
Johannes Bergb1eea292012-03-06 13:30:42 -08001357 mutex_init(&priv->mutex);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001358
Johannes Berge1991882012-03-06 13:30:36 -08001359 INIT_LIST_HEAD(&priv->calib_results);
Johannes Berg80e83da2011-11-25 11:11:44 -08001360
Reinette Chatre89f186a2009-10-30 14:36:11 -07001361 priv->ieee_channels = NULL;
1362 priv->ieee_rates = NULL;
1363 priv->band = IEEE80211_BAND_2GHZ;
1364
Johannes Bergab5c0f12012-03-06 13:30:53 -08001365 priv->plcp_delta_threshold =
1366 cfg(priv)->base_params->plcp_delta_threshold;
1367
Reinette Chatre89f186a2009-10-30 14:36:11 -07001368 priv->iw_mode = NL80211_IFTYPE_STATION;
Johannes Bergba37a3d2009-12-10 14:37:27 -08001369 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
Wey-Yi Guya13d2762010-01-22 14:22:42 -08001370 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
Wey-Yi Guy898ed672011-07-13 08:38:57 -07001371 priv->agg_tids_count = 0;
Reinette Chatre89f186a2009-10-30 14:36:11 -07001372
Johannes Berg947a9402012-03-06 13:30:59 -08001373 priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1374
Stanislaw Gruszka410f2bb2011-03-04 17:51:51 +01001375 priv->rx_statistics_jiffies = jiffies;
1376
Reinette Chatre89f186a2009-10-30 14:36:11 -07001377 /* Choose which receivers/antennas to use */
Wey-Yi Guye3f10ce2011-07-01 07:59:26 -07001378 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001379
1380 iwl_init_scan_params(priv);
1381
Wey-Yi Guy22bf59a2010-08-23 07:57:11 -07001382 /* init bt coex */
Don Fry38622412011-12-16 07:07:36 -08001383 if (cfg(priv)->bt_params &&
1384 cfg(priv)->bt_params->advanced_bt_coexist) {
Wey-Yi Guyb6e116e2010-08-23 07:57:14 -07001385 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1386 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1387 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
Wey-Yi Guy22bf59a2010-08-23 07:57:11 -07001388 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1389 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1390 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
Wey-Yi Guy22bf59a2010-08-23 07:57:11 -07001391 }
1392
Reinette Chatre89f186a2009-10-30 14:36:11 -07001393 ret = iwl_init_channel_map(priv);
1394 if (ret) {
1395 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1396 goto err;
1397 }
1398
Wey-Yi Guyb39488a2011-08-25 23:10:33 -07001399 ret = iwl_init_geos(priv);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001400 if (ret) {
1401 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1402 goto err_free_channel_map;
1403 }
Johannes Berg03dadf92012-03-07 09:52:13 -08001404 iwl_init_hw_rates(priv->ieee_rates);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001405
1406 return 0;
1407
1408err_free_channel_map:
1409 iwl_free_channel_map(priv);
1410err:
1411 return ret;
1412}
1413
1414static void iwl_uninit_drv(struct iwl_priv *priv)
1415{
Wey-Yi Guyb39488a2011-08-25 23:10:33 -07001416 iwl_free_geos(priv);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001417 iwl_free_channel_map(priv);
Johannes Berg811ecc92010-04-06 04:12:41 -07001418 kfree(priv->scan_cmd);
Johannes Berg4ce7cc22011-05-13 11:57:40 -07001419 kfree(priv->beacon_cmd);
Johannes Berg79d3eef2011-11-10 06:55:01 -08001420 kfree(rcu_dereference_raw(priv->noa_data));
Johannes Berge1991882012-03-06 13:30:36 -08001421 iwl_calib_free_results(priv);
Johannes Bergc8ac61c2011-07-15 13:23:45 -07001422#ifdef CONFIG_IWLWIFI_DEBUGFS
1423 kfree(priv->wowlan_sram);
1424#endif
Reinette Chatre89f186a2009-10-30 14:36:11 -07001425}
1426
Emmanuel Grumbach6d4dec72012-02-17 10:52:03 -08001427static void iwl_set_hw_params(struct iwl_priv *priv)
Wey-Yi Guy07d4f1a2010-07-31 08:34:08 -07001428{
Johannes Bergb9ad70d2012-03-06 13:30:55 -08001429 if (cfg(priv)->ht_params)
Johannes Berg9e295112012-04-09 17:46:55 -07001430 priv->hw_params.use_rts_for_aggregation =
Johannes Bergb9ad70d2012-03-06 13:30:55 -08001431 cfg(priv)->ht_params->use_rts_for_aggregation;
1432
Johannes Berg74289942011-12-13 00:07:40 -08001433 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
Johannes Berg9e295112012-04-09 17:46:55 -07001434 priv->hw_params.sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
Wey-Yi Guy07d4f1a2010-07-31 08:34:08 -07001435
1436 /* Device-specific setup */
Johannes Berge9676692012-04-10 14:10:28 -07001437 priv->lib->set_hw_params(priv);
Wey-Yi Guy07d4f1a2010-07-31 08:34:08 -07001438}
1439
Wey-Yi Guy119ea182011-04-18 09:34:06 -07001440
Wey-Yi Guy119ea182011-04-18 09:34:06 -07001441
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001442static void iwl_debug_config(struct iwl_priv *priv)
1443{
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001444 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001445#ifdef CONFIG_IWLWIFI_DEBUG
1446 "enabled\n");
1447#else
1448 "disabled\n");
1449#endif
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001450 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001451#ifdef CONFIG_IWLWIFI_DEBUGFS
1452 "enabled\n");
1453#else
1454 "disabled\n");
1455#endif
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001456 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001457#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1458 "enabled\n");
1459#else
1460 "disabled\n");
1461#endif
1462
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001463 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
Wey-Yi Guy5ef15cc2011-11-30 13:24:06 -08001464#ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001465 "enabled\n");
1466#else
1467 "disabled\n");
1468#endif
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001469 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
Wey-Yi Guy0cb38d62011-12-02 07:33:57 -08001470#ifdef CONFIG_IWLWIFI_P2P
1471 "enabled\n");
1472#else
1473 "disabled\n");
1474#endif
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001475}
1476
Johannes Berg0692fe42012-03-06 13:30:37 -08001477static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1478 const struct iwl_fw *fw)
Wey-Yi Guyb2ea3452011-06-07 08:53:14 -07001479{
Wey-Yi Guyb2ea3452011-06-07 08:53:14 -07001480 struct iwl_priv *priv;
1481 struct ieee80211_hw *hw;
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001482 struct iwl_op_mode *op_mode;
Emmanuel Grumbach084dd7912011-05-31 09:07:00 +03001483 u16 num_mac;
Johannes Berga78be212012-02-21 18:31:06 +02001484 u32 ucode_flags;
Meenakshi Venkataraman92d743a2012-03-07 09:52:35 -08001485 struct iwl_trans_config trans_cfg;
Johannes Bergd663ee72012-03-10 13:00:07 -08001486 static const u8 no_reclaim_cmds[] = {
1487 REPLY_RX_PHY_CMD,
1488 REPLY_RX,
1489 REPLY_RX_MPDU_CMD,
1490 REPLY_COMPRESSED_BA,
1491 STATISTICS_NOTIFICATION,
1492 REPLY_TX,
1493 };
Johannes Berg9eae88f2012-03-15 13:26:52 -07001494 const u8 *q_to_ac;
1495 int n_q_to_ac;
1496 int i;
Wey-Yi Guyb2ea3452011-06-07 08:53:14 -07001497
1498 /************************
1499 * 1. Allocating HW data
1500 ************************/
Don Fryfa06ec72011-10-14 12:54:46 -07001501 hw = iwl_alloc_all();
Wey-Yi Guyb2ea3452011-06-07 08:53:14 -07001502 if (!hw) {
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001503 pr_err("%s: Cannot allocate network device\n",
1504 cfg(trans)->name);
Emmanuel Grumbach807caf22011-06-09 02:55:55 -07001505 goto out;
1506 }
1507
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001508 op_mode = hw->priv;
1509 op_mode->ops = &iwl_dvm_ops;
1510 priv = IWL_OP_MODE_GET_DVM(op_mode);
1511 priv->shrd = trans->shrd;
Johannes Berg0692fe42012-03-06 13:30:37 -08001512 priv->fw = fw;
Emmanuel Grumbacha48709c2011-05-31 08:22:30 +03001513
Johannes Berge9676692012-04-10 14:10:28 -07001514 switch (cfg(priv)->device_family) {
1515 case IWL_DEVICE_FAMILY_1000:
1516 case IWL_DEVICE_FAMILY_100:
1517 priv->lib = &iwl1000_lib;
1518 break;
1519 case IWL_DEVICE_FAMILY_2000:
1520 case IWL_DEVICE_FAMILY_105:
1521 priv->lib = &iwl2000_lib;
1522 break;
1523 case IWL_DEVICE_FAMILY_2030:
1524 case IWL_DEVICE_FAMILY_135:
1525 priv->lib = &iwl2030_lib;
1526 break;
1527 case IWL_DEVICE_FAMILY_5000:
1528 priv->lib = &iwl5000_lib;
1529 break;
1530 case IWL_DEVICE_FAMILY_5150:
1531 priv->lib = &iwl5150_lib;
1532 break;
1533 case IWL_DEVICE_FAMILY_6000:
1534 case IWL_DEVICE_FAMILY_6005:
1535 case IWL_DEVICE_FAMILY_6000i:
1536 case IWL_DEVICE_FAMILY_6050:
1537 case IWL_DEVICE_FAMILY_6150:
1538 priv->lib = &iwl6000_lib;
1539 break;
1540 case IWL_DEVICE_FAMILY_6030:
1541 priv->lib = &iwl6030_lib;
1542 break;
1543 default:
1544 break;
1545 }
1546
1547 if (WARN_ON(!priv->lib))
1548 goto out_free_traffic_mem;
1549
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001550 /*
1551 * Populate the state variables that the transport layer needs
1552 * to know about.
1553 */
1554 trans_cfg.op_mode = op_mode;
Johannes Bergd663ee72012-03-10 13:00:07 -08001555 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1556 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
Johannes Bergb2cf4102012-04-09 17:46:51 -07001557 trans_cfg.rx_buf_size_8k = iwlagn_mod_params.amsdu_size_8K;
Johannes Berg7c5ba4a2012-04-09 17:46:54 -07001558 if (!iwlagn_mod_params.wd_disable)
1559 trans_cfg.queue_watchdog_timeout =
1560 cfg(priv)->base_params->wd_timeout;
1561 else
1562 trans_cfg.queue_watchdog_timeout = IWL_WATCHHDOG_DISABLED;
Meenakshi Venkataraman9bdfbfa2012-03-07 09:52:36 -08001563
1564 ucode_flags = fw->ucode_capa.flags;
1565
1566#ifndef CONFIG_IWLWIFI_P2P
1567 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1568#endif
Meenakshi Venkataraman92d743a2012-03-07 09:52:35 -08001569
Meenakshi Venkataramanc6f600f2012-03-08 11:29:12 -08001570 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1571 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1572 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
Johannes Berg9eae88f2012-03-15 13:26:52 -07001573 trans_cfg.queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo;
1574 trans_cfg.n_queue_to_fifo =
1575 ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
1576 q_to_ac = iwlagn_pan_queue_to_ac;
1577 n_q_to_ac = ARRAY_SIZE(iwlagn_pan_queue_to_ac);
Meenakshi Venkataramanc6f600f2012-03-08 11:29:12 -08001578 } else {
1579 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1580 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
Johannes Berg9eae88f2012-03-15 13:26:52 -07001581 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1582 trans_cfg.n_queue_to_fifo =
1583 ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1584 q_to_ac = iwlagn_bss_queue_to_ac;
1585 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
Meenakshi Venkataramanc6f600f2012-03-08 11:29:12 -08001586 }
1587
Meenakshi Venkataraman92d743a2012-03-07 09:52:35 -08001588 /* Configure transport layer */
1589 iwl_trans_configure(trans(priv), &trans_cfg);
Emmanuel Grumbached277c92012-02-09 16:08:15 +02001590
Wey-Yi Guyb2ea3452011-06-07 08:53:14 -07001591 /* At this point both hw and priv are allocated. */
Johannes Berg8f2d3d22010-08-23 10:46:37 +02001592
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001593 SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
Zhu Yib481de92007-09-25 17:54:57 -07001594
Don Fry1589c562012-01-27 13:15:54 -08001595 /* show what debugging capabilities we have */
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001596 iwl_debug_config(priv);
1597
Tomas Winklere1623442009-01-27 14:27:56 -08001598 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
Assaf Krauss316c30d2008-03-14 10:38:46 -07001599
Wey-Yi Guybee008b2010-08-23 07:57:04 -07001600 /* is antenna coupling more than 35dB ? */
1601 priv->bt_ant_couple_ok =
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07001602 (iwlagn_mod_params.ant_coupling >
1603 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1604 true : false;
Wey-Yi Guybee008b2010-08-23 07:57:04 -07001605
Wey-Yi Guy9f28ebc2010-11-26 13:24:19 -08001606 /* enable/disable bt channel inhibition */
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07001607 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
Wey-Yi Guy9f28ebc2010-11-26 13:24:19 -08001608 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1609 (priv->bt_ch_announce) ? "On" : "Off");
Wey-Yi Guyf37837c2010-08-23 07:57:12 -07001610
Wey-Yi Guy20594eb2009-08-07 15:41:39 -07001611 if (iwl_alloc_traffic_mem(priv))
1612 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
Zhu Yib481de92007-09-25 17:54:57 -07001613
Reinette Chatre731a29b2009-12-14 14:12:11 -08001614 /* these spin locks will be used in apm_ops.init and EEPROM access
Mohamed Abbasa8b50a02009-05-22 11:01:47 -07001615 * we should init now
1616 */
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001617 spin_lock_init(&trans(priv)->reg_lock);
Johannes Berg4ff70fcd2012-03-05 11:24:26 -08001618 spin_lock_init(&priv->statistics.lock);
Reinette Chatre4843b5a2010-02-03 09:38:59 -08001619
Emmanuel Grumbach084dd7912011-05-31 09:07:00 +03001620 /***********************
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001621 * 2. Read REV register
Emmanuel Grumbach084dd7912011-05-31 09:07:00 +03001622 ***********************/
Shanyu Zhaoc11362c2010-03-05 17:05:20 -08001623 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
Emmanuel Grumbach08079a492012-01-09 16:23:00 +02001624 cfg(priv)->name, trans(priv)->hw_rev);
Assaf Krauss316c30d2008-03-14 10:38:46 -07001625
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001626 if (iwl_trans_start_hw(trans(priv)))
Emmanuel Grumbachb52e7ea2012-02-02 14:16:59 -08001627 goto out_free_traffic_mem;
Emmanuel Grumbach1e89cbac2011-07-20 17:51:22 -07001628
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001629 /* Read the EEPROM */
Johannes Berg11483b52012-04-09 17:46:58 -07001630 if (iwl_eeprom_init(priv, trans(priv)->hw_rev)) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08001631 IWL_ERR(priv, "Unable to init EEPROM\n");
Emmanuel Grumbachb52e7ea2012-02-02 14:16:59 -08001632 goto out_free_traffic_mem;
Assaf Krauss316c30d2008-03-14 10:38:46 -07001633 }
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001634 /* Reset chip to save power until we load uCode during "up". */
1635 iwl_trans_stop_hw(trans(priv));
1636
1637 if (iwl_eeprom_check_version(priv))
Reinette Chatrec8f16132009-02-27 16:21:22 -08001638 goto out_free_eeprom;
Tomas Winkler8614f362008-04-23 17:14:55 -07001639
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001640 if (iwl_eeprom_init_hw_params(priv))
Wey-Yi Guy21a5b3c2010-11-10 13:32:59 -08001641 goto out_free_eeprom;
1642
Ron Rindjunsky02883012008-05-15 13:53:53 +08001643 /* extract MAC Address */
Johannes Berg11483b52012-04-09 17:46:58 -07001644 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
Wey-Yi Guyc6fa17e2010-07-15 05:58:30 -07001645 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1646 priv->hw->wiphy->addresses = priv->addresses;
1647 priv->hw->wiphy->n_addresses = 1;
Johannes Berg11483b52012-04-09 17:46:58 -07001648 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
Wey-Yi Guyc6fa17e2010-07-15 05:58:30 -07001649 if (num_mac > 1) {
1650 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1651 ETH_ALEN);
1652 priv->addresses[1].addr[5]++;
1653 priv->hw->wiphy->n_addresses++;
1654 }
Assaf Krauss316c30d2008-03-14 10:38:46 -07001655
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001656 /************************
1657 * 4. Setup HW constants
1658 ************************/
1659 iwl_set_hw_params(priv);
1660
Johannes Berg9e295112012-04-09 17:46:55 -07001661 if (!(priv->hw_params.sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001662 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1663 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1664 /*
1665 * if not PAN, then don't support P2P -- might be a uCode
1666 * packaging bug or due to the eeprom check above
1667 */
1668 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1669 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1670 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
Johannes Berg9eae88f2012-03-15 13:26:52 -07001671 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1672 trans_cfg.n_queue_to_fifo =
1673 ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1674 q_to_ac = iwlagn_bss_queue_to_ac;
1675 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001676
1677 /* Configure transport layer again*/
1678 iwl_trans_configure(trans(priv), &trans_cfg);
1679 }
1680
Assaf Krauss316c30d2008-03-14 10:38:46 -07001681 /*******************
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001682 * 5. Setup priv
Assaf Krauss316c30d2008-03-14 10:38:46 -07001683 *******************/
Johannes Berg9eae88f2012-03-15 13:26:52 -07001684 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1685 atomic_set(&priv->ac_stop_count[i], 0);
1686
1687 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1688 if (i < n_q_to_ac)
1689 priv->queue_to_ac[i] = q_to_ac[i];
1690 else
1691 priv->queue_to_ac[i] = IWL_INVALID_AC;
1692 }
1693
1694 WARN_ON(trans_cfg.queue_to_fifo[trans_cfg.cmd_queue] !=
1695 IWLAGN_CMD_FIFO_NUM);
Zhu Yib481de92007-09-25 17:54:57 -07001696
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001697 if (iwl_init_drv(priv))
Ron Rindjunsky399f4902008-04-23 17:14:56 -07001698 goto out_free_eeprom;
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001699
Assaf Kraussbf85ea42008-03-14 10:38:49 -07001700 /* At this point both hw and priv are initialized. */
Assaf Krauss316c30d2008-03-14 10:38:46 -07001701
Assaf Krauss316c30d2008-03-14 10:38:46 -07001702 /********************
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001703 * 6. Setup services
Assaf Krauss316c30d2008-03-14 10:38:46 -07001704 ********************/
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08001705 iwl_setup_deferred_work(priv);
Emmanuel Grumbach653fa4a2008-06-30 17:23:11 +08001706 iwl_setup_rx_handlers(priv);
Cindy H. Kao4613e722011-05-06 10:40:15 -07001707 iwl_testmode_init(priv);
Assaf Krauss316c30d2008-03-14 10:38:46 -07001708
Emmanuel Grumbach58d0f362008-06-12 09:47:19 +08001709 iwl_power_initialize(priv);
Wey-Yi Guy39b73fb12009-07-24 11:13:02 -07001710 iwl_tt_initialize(priv);
Johannes Berg158bea02010-01-22 14:22:53 -08001711
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001712 snprintf(priv->hw->wiphy->fw_version,
1713 sizeof(priv->hw->wiphy->fw_version),
1714 "%s", fw->fw_version);
Johannes Berg562db532010-04-29 07:41:53 -07001715
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001716 priv->new_scan_threshold_behaviour =
Johannes Berga78be212012-02-21 18:31:06 +02001717 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001718
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001719 priv->phy_calib_chain_noise_reset_cmd =
1720 fw->ucode_capa.standard_phy_calibration_size;
1721 priv->phy_calib_chain_noise_gain_cmd =
1722 fw->ucode_capa.standard_phy_calibration_size + 1;
1723
1724 /* initialize all valid contexts */
Johannes Berga78be212012-02-21 18:31:06 +02001725 iwl_init_context(priv, ucode_flags);
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001726
1727 /**************************************************
1728 * This is still part of probe() in a sense...
1729 *
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001730 * 7. Setup and register with mac80211 and debugfs
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001731 **************************************************/
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001732 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
Emmanuel Grumbach7d476182010-05-23 00:14:08 -07001733 goto out_destroy_workqueue;
Johannes Berg158bea02010-01-22 14:22:53 -08001734
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001735 if (iwl_dbgfs_register(priv, DRV_NAME))
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001736 IWL_ERR(priv,
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001737 "failed to create debugfs files. Ignoring error\n");
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001738
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001739 return op_mode;
Zhu Yib481de92007-09-25 17:54:57 -07001740
Emmanuel Grumbach34c1b7b2011-07-04 08:58:19 +03001741out_destroy_workqueue:
Johannes Berg1ee158d2012-02-17 10:07:44 -08001742 destroy_workqueue(priv->workqueue);
1743 priv->workqueue = NULL;
Tomas Winkler6ba87952008-05-15 13:54:17 +08001744 iwl_uninit_drv(priv);
Emmanuel Grumbach34c1b7b2011-07-04 08:58:19 +03001745out_free_eeprom:
Johannes Berg11483b52012-04-09 17:46:58 -07001746 iwl_eeprom_free(priv);
Emmanuel Grumbach34c1b7b2011-07-04 08:58:19 +03001747out_free_traffic_mem:
Wey-Yi Guy20594eb2009-08-07 15:41:39 -07001748 iwl_free_traffic_mem(priv);
Wey-Yi Guyd7c76f42009-10-09 13:20:17 -07001749 ieee80211_free_hw(priv->hw);
Emmanuel Grumbach34c1b7b2011-07-04 08:58:19 +03001750out:
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001751 op_mode = NULL;
1752 return op_mode;
Zhu Yib481de92007-09-25 17:54:57 -07001753}
1754
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001755static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
Zhu Yib481de92007-09-25 17:54:57 -07001756{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001757 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1758
Tomas Winklere1623442009-01-27 14:27:56 -08001759 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
Zhu Yib481de92007-09-25 17:54:57 -07001760
Emmanuel Grumbach67249622008-05-29 16:35:26 +08001761 iwl_dbgfs_unregister(priv);
Emmanuel Grumbach67249622008-05-29 16:35:26 +08001762
Wey-Yi Guy7a4e5282011-05-06 10:21:28 -07001763 iwl_testmode_cleanup(priv);
Don Fry09af1402011-12-09 10:07:38 -08001764 iwlagn_mac_unregister(priv);
Ron Rindjunskyc4f55232008-03-28 16:21:10 -07001765
Wey-Yi Guy39b73fb12009-07-24 11:13:02 -07001766 iwl_tt_exit(priv);
1767
Emmanuel Grumbachae2c30b2011-08-25 23:11:20 -07001768 /*This will stop the queues, move the device to low power state */
David Spinadel8f7ffbe2012-03-10 13:00:10 -08001769 priv->ucode_loaded = false;
Emmanuel Grumbachae2c30b2011-08-25 23:11:20 -07001770 iwl_trans_stop_device(trans(priv));
Mohamed Abbas0359fac2008-03-28 16:21:08 -07001771
Johannes Berg11483b52012-04-09 17:46:58 -07001772 iwl_eeprom_free(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001773
Mohamed Abbas948c1712007-10-25 17:15:45 +08001774 /*netif_stop_queue(dev); */
Johannes Berg1ee158d2012-02-17 10:07:44 -08001775 flush_workqueue(priv->workqueue);
Mohamed Abbas948c1712007-10-25 17:15:45 +08001776
Wey-Yi Guyade4c642011-10-10 07:27:11 -07001777 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
Johannes Berg1ee158d2012-02-17 10:07:44 -08001778 * priv->workqueue... so we can't take down the workqueue
Zhu Yib481de92007-09-25 17:54:57 -07001779 * until now... */
Johannes Berg1ee158d2012-02-17 10:07:44 -08001780 destroy_workqueue(priv->workqueue);
1781 priv->workqueue = NULL;
Wey-Yi Guy20594eb2009-08-07 15:41:39 -07001782 iwl_free_traffic_mem(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001783
Tomas Winkler6ba87952008-05-15 13:54:17 +08001784 iwl_uninit_drv(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001785
Johannes Berg77834542010-10-04 05:50:36 -07001786 dev_kfree_skb(priv->beacon_skb);
Zhu Yib481de92007-09-25 17:54:57 -07001787
1788 ieee80211_free_hw(priv->hw);
1789}
1790
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001791static const char * const desc_lookup_text[] = {
1792 "OK",
1793 "FAIL",
1794 "BAD_PARAM",
1795 "BAD_CHECKSUM",
1796 "NMI_INTERRUPT_WDG",
1797 "SYSASSERT",
1798 "FATAL_ERROR",
1799 "BAD_COMMAND",
1800 "HW_ERROR_TUNE_LOCK",
1801 "HW_ERROR_TEMPERATURE",
1802 "ILLEGAL_CHAN_FREQ",
1803 "VCC_NOT_STABLE",
1804 "FH_ERROR",
1805 "NMI_INTERRUPT_HOST",
1806 "NMI_INTERRUPT_ACTION_PT",
1807 "NMI_INTERRUPT_UNKNOWN",
1808 "UCODE_VERSION_MISMATCH",
1809 "HW_ERROR_ABS_LOCK",
1810 "HW_ERROR_CAL_LOCK_FAIL",
1811 "NMI_INTERRUPT_INST_ACTION_PT",
1812 "NMI_INTERRUPT_DATA_ACTION_PT",
1813 "NMI_TRM_HW_ER",
1814 "NMI_INTERRUPT_TRM",
1815 "NMI_INTERRUPT_BREAK_POINT",
1816 "DEBUG_0",
1817 "DEBUG_1",
1818 "DEBUG_2",
1819 "DEBUG_3",
1820};
1821
1822static struct { char *name; u8 num; } advanced_lookup[] = {
1823 { "NMI_INTERRUPT_WDG", 0x34 },
1824 { "SYSASSERT", 0x35 },
1825 { "UCODE_VERSION_MISMATCH", 0x37 },
1826 { "BAD_COMMAND", 0x38 },
1827 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1828 { "FATAL_ERROR", 0x3D },
1829 { "NMI_TRM_HW_ERR", 0x46 },
1830 { "NMI_INTERRUPT_TRM", 0x4C },
1831 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1832 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1833 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1834 { "NMI_INTERRUPT_HOST", 0x66 },
1835 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1836 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1837 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1838 { "ADVANCED_SYSASSERT", 0 },
1839};
1840
1841static const char *desc_lookup(u32 num)
1842{
1843 int i;
1844 int max = ARRAY_SIZE(desc_lookup_text);
1845
1846 if (num < max)
1847 return desc_lookup_text[num];
1848
1849 max = ARRAY_SIZE(advanced_lookup) - 1;
1850 for (i = 0; i < max; i++) {
1851 if (advanced_lookup[i].num == num)
1852 break;
1853 }
1854 return advanced_lookup[i].name;
1855}
1856
1857#define ERROR_START_OFFSET (1 * sizeof(u32))
1858#define ERROR_ELEM_SIZE (7 * sizeof(u32))
1859
1860static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1861{
1862 struct iwl_trans *trans = trans(priv);
1863 u32 base;
1864 struct iwl_error_event_table table;
1865
1866 base = priv->device_pointers.error_event_table;
Meenakshi Venkataramana42506e2012-03-15 13:26:57 -07001867 if (priv->cur_ucode == IWL_UCODE_INIT) {
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001868 if (!base)
Meenakshi Venkataramane3ec26d2012-03-15 13:27:04 -07001869 base = priv->fw->init_errlog_ptr;
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001870 } else {
1871 if (!base)
Meenakshi Venkataramane3ec26d2012-03-15 13:27:04 -07001872 base = priv->fw->inst_errlog_ptr;
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001873 }
1874
1875 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1876 IWL_ERR(priv,
1877 "Not valid error log pointer 0x%08X for %s uCode\n",
1878 base,
Meenakshi Venkataramana42506e2012-03-15 13:26:57 -07001879 (priv->cur_ucode == IWL_UCODE_INIT)
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001880 ? "Init" : "RT");
1881 return;
1882 }
1883
1884 /*TODO: Update dbgfs with ISR error stats obtained below */
1885 iwl_read_targ_mem_words(trans, base, &table, sizeof(table));
1886
1887 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1888 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1889 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1890 priv->shrd->status, table.valid);
1891 }
1892
1893 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1894 table.data1, table.data2, table.line,
1895 table.blink1, table.blink2, table.ilink1,
1896 table.ilink2, table.bcon_time, table.gp1,
1897 table.gp2, table.gp3, table.ucode_ver,
1898 table.hw_ver, table.brd_ver);
1899 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1900 desc_lookup(table.error_id));
1901 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1902 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1903 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1904 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1905 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1906 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1907 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1908 IWL_ERR(priv, "0x%08X | line\n", table.line);
1909 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1910 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1911 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1912 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1913 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1914 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1915 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1916 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1917 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1918 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1919 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1920 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1921 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1922 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1923 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1924 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1925 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1926 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1927 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1928 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1929 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1930 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1931 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1932 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1933}
1934
1935#define EVENT_START_OFFSET (4 * sizeof(u32))
1936
1937/**
1938 * iwl_print_event_log - Dump error event log to syslog
1939 *
1940 */
1941static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1942 u32 num_events, u32 mode,
1943 int pos, char **buf, size_t bufsz)
1944{
1945 u32 i;
1946 u32 base; /* SRAM byte address of event log header */
1947 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1948 u32 ptr; /* SRAM byte address of log data */
1949 u32 ev, time, data; /* event log data */
1950 unsigned long reg_flags;
1951
1952 struct iwl_trans *trans = trans(priv);
1953
1954 if (num_events == 0)
1955 return pos;
1956
1957 base = priv->device_pointers.log_event_table;
Meenakshi Venkataramana42506e2012-03-15 13:26:57 -07001958 if (priv->cur_ucode == IWL_UCODE_INIT) {
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001959 if (!base)
Meenakshi Venkataramane3ec26d2012-03-15 13:27:04 -07001960 base = priv->fw->init_evtlog_ptr;
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001961 } else {
1962 if (!base)
Meenakshi Venkataramane3ec26d2012-03-15 13:27:04 -07001963 base = priv->fw->inst_evtlog_ptr;
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001964 }
1965
1966 if (mode == 0)
1967 event_size = 2 * sizeof(u32);
1968 else
1969 event_size = 3 * sizeof(u32);
1970
1971 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1972
1973 /* Make sure device is powered up for SRAM reads */
1974 spin_lock_irqsave(&trans->reg_lock, reg_flags);
1975 if (unlikely(!iwl_grab_nic_access(trans)))
1976 goto out_unlock;
1977
1978 /* Set starting address; reads will auto-increment */
1979 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1980
1981 /* "time" is actually "data" for mode 0 (no timestamp).
1982 * place event id # at far right for easier visual parsing. */
1983 for (i = 0; i < num_events; i++) {
1984 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1985 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1986 if (mode == 0) {
1987 /* data, ev */
1988 if (bufsz) {
1989 pos += scnprintf(*buf + pos, bufsz - pos,
1990 "EVT_LOG:0x%08x:%04u\n",
1991 time, ev);
1992 } else {
1993 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1994 time, ev);
1995 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1996 time, ev);
1997 }
1998 } else {
1999 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
2000 if (bufsz) {
2001 pos += scnprintf(*buf + pos, bufsz - pos,
2002 "EVT_LOGT:%010u:0x%08x:%04u\n",
2003 time, data, ev);
2004 } else {
2005 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
2006 time, data, ev);
2007 trace_iwlwifi_dev_ucode_event(trans->dev, time,
2008 data, ev);
2009 }
2010 }
2011 }
2012
2013 /* Allow device to power down */
2014 iwl_release_nic_access(trans);
2015out_unlock:
2016 spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
2017 return pos;
2018}
2019
2020/**
2021 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2022 */
2023static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
2024 u32 num_wraps, u32 next_entry,
2025 u32 size, u32 mode,
2026 int pos, char **buf, size_t bufsz)
2027{
2028 /*
2029 * display the newest DEFAULT_LOG_ENTRIES entries
2030 * i.e the entries just before the next ont that uCode would fill.
2031 */
2032 if (num_wraps) {
2033 if (next_entry < size) {
2034 pos = iwl_print_event_log(priv,
2035 capacity - (size - next_entry),
2036 size - next_entry, mode,
2037 pos, buf, bufsz);
2038 pos = iwl_print_event_log(priv, 0,
2039 next_entry, mode,
2040 pos, buf, bufsz);
2041 } else
2042 pos = iwl_print_event_log(priv, next_entry - size,
2043 size, mode, pos, buf, bufsz);
2044 } else {
2045 if (next_entry < size) {
2046 pos = iwl_print_event_log(priv, 0, next_entry,
2047 mode, pos, buf, bufsz);
2048 } else {
2049 pos = iwl_print_event_log(priv, next_entry - size,
2050 size, mode, pos, buf, bufsz);
2051 }
2052 }
2053 return pos;
2054}
2055
2056#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2057
2058int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2059 char **buf, bool display)
2060{
2061 u32 base; /* SRAM byte address of event log header */
2062 u32 capacity; /* event log capacity in # entries */
2063 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2064 u32 num_wraps; /* # times uCode wrapped to top of log */
2065 u32 next_entry; /* index of next entry to be written by uCode */
2066 u32 size; /* # entries that we'll print */
2067 u32 logsize;
2068 int pos = 0;
2069 size_t bufsz = 0;
2070 struct iwl_trans *trans = trans(priv);
2071
2072 base = priv->device_pointers.log_event_table;
Meenakshi Venkataramana42506e2012-03-15 13:26:57 -07002073 if (priv->cur_ucode == IWL_UCODE_INIT) {
Meenakshi Venkataramane3ec26d2012-03-15 13:27:04 -07002074 logsize = priv->fw->init_evtlog_size;
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07002075 if (!base)
Meenakshi Venkataramane3ec26d2012-03-15 13:27:04 -07002076 base = priv->fw->init_evtlog_ptr;
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07002077 } else {
Meenakshi Venkataramane3ec26d2012-03-15 13:27:04 -07002078 logsize = priv->fw->inst_evtlog_size;
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07002079 if (!base)
Meenakshi Venkataramane3ec26d2012-03-15 13:27:04 -07002080 base = priv->fw->inst_evtlog_ptr;
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07002081 }
2082
2083 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
2084 IWL_ERR(priv,
2085 "Invalid event log pointer 0x%08X for %s uCode\n",
2086 base,
Meenakshi Venkataramana42506e2012-03-15 13:26:57 -07002087 (priv->cur_ucode == IWL_UCODE_INIT)
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07002088 ? "Init" : "RT");
2089 return -EINVAL;
2090 }
2091
2092 /* event log header */
2093 capacity = iwl_read_targ_mem(trans, base);
2094 mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32)));
2095 num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32)));
2096 next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32)));
2097
2098 if (capacity > logsize) {
2099 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
2100 "entries\n", capacity, logsize);
2101 capacity = logsize;
2102 }
2103
2104 if (next_entry > logsize) {
2105 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2106 next_entry, logsize);
2107 next_entry = logsize;
2108 }
2109
2110 size = num_wraps ? capacity : next_entry;
2111
2112 /* bail out if nothing in log */
2113 if (size == 0) {
2114 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
2115 return pos;
2116 }
2117
2118#ifdef CONFIG_IWLWIFI_DEBUG
2119 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
2120 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2121 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2122#else
2123 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2124 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2125#endif
2126 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2127 size);
2128
2129#ifdef CONFIG_IWLWIFI_DEBUG
2130 if (display) {
2131 if (full_log)
2132 bufsz = capacity * 48;
2133 else
2134 bufsz = size * 48;
2135 *buf = kmalloc(bufsz, GFP_KERNEL);
2136 if (!*buf)
2137 return -ENOMEM;
2138 }
2139 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
2140 /*
2141 * if uCode has wrapped back to top of log,
2142 * start at the oldest entry,
2143 * i.e the next one that uCode would fill.
2144 */
2145 if (num_wraps)
2146 pos = iwl_print_event_log(priv, next_entry,
2147 capacity - next_entry, mode,
2148 pos, buf, bufsz);
2149 /* (then/else) start at top of log */
2150 pos = iwl_print_event_log(priv, 0,
2151 next_entry, mode, pos, buf, bufsz);
2152 } else
2153 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2154 next_entry, size, mode,
2155 pos, buf, bufsz);
2156#else
2157 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2158 next_entry, size, mode,
2159 pos, buf, bufsz);
2160#endif
2161 return pos;
2162}
2163
Meenakshi Venkataraman193219c2012-03-13 18:00:15 -07002164static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
2165{
2166 unsigned int reload_msec;
2167 unsigned long reload_jiffies;
2168
2169#ifdef CONFIG_IWLWIFI_DEBUG
2170 if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
2171 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
2172#endif
2173
2174 /* uCode is no longer loaded. */
2175 priv->ucode_loaded = false;
2176
2177 /* Set the FW error flag -- cleared on iwl_down */
2178 set_bit(STATUS_FW_ERROR, &priv->status);
2179
2180 /* Cancel currently queued command. */
2181 clear_bit(STATUS_HCMD_ACTIVE, &priv->shrd->status);
2182
2183 iwl_abort_notification_waits(&priv->notif_wait);
2184
2185 /* Keep the restart process from trying to send host
2186 * commands by clearing the ready bit */
2187 clear_bit(STATUS_READY, &priv->status);
2188
2189 wake_up(&trans(priv)->wait_command_queue);
2190
2191 if (!ondemand) {
2192 /*
2193 * If firmware keep reloading, then it indicate something
2194 * serious wrong and firmware having problem to recover
2195 * from it. Instead of keep trying which will fill the syslog
2196 * and hang the system, let's just stop it
2197 */
2198 reload_jiffies = jiffies;
2199 reload_msec = jiffies_to_msecs((long) reload_jiffies -
2200 (long) priv->reload_jiffies);
2201 priv->reload_jiffies = reload_jiffies;
2202 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
2203 priv->reload_count++;
2204 if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
2205 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
2206 return;
2207 }
2208 } else
2209 priv->reload_count = 0;
2210 }
2211
2212 if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2213 if (iwlagn_mod_params.restart_fw) {
2214 IWL_DEBUG_FW_ERRORS(priv,
2215 "Restarting adapter due to uCode error.\n");
2216 queue_work(priv->workqueue, &priv->restart);
2217 } else
2218 IWL_DEBUG_FW_ERRORS(priv,
2219 "Detected FW error, but not restarting\n");
2220 }
2221}
2222
Meenakshi Venkataraman19469f42012-03-15 13:26:55 -07002223static void iwl_nic_error(struct iwl_op_mode *op_mode)
2224{
2225 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2226
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07002227 IWL_ERR(priv, "Loaded firmware version: %s\n",
Meenakshi Venkataramane3ec26d2012-03-15 13:27:04 -07002228 priv->fw->fw_version);
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07002229
2230 iwl_dump_nic_error_log(priv);
2231 iwl_dump_nic_event_log(priv, false, NULL, false);
2232
Meenakshi Venkataraman19469f42012-03-15 13:26:55 -07002233 iwlagn_fw_error(priv, false);
2234}
2235
Johannes Berg0e781842012-03-06 13:30:49 -08002236static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
2237{
2238 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2239
2240 if (!iwl_check_for_ct_kill(priv)) {
2241 IWL_ERR(priv, "Restarting adapter queue is full\n");
Meenakshi Venkataramanb7e21bf2012-03-15 13:26:54 -07002242 iwlagn_fw_error(priv, false);
Johannes Berg0e781842012-03-06 13:30:49 -08002243 }
2244}
2245
Johannes Bergecdb9752012-03-06 13:31:03 -08002246static void iwl_nic_config(struct iwl_op_mode *op_mode)
2247{
2248 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2249
Johannes Berge9676692012-04-10 14:10:28 -07002250 priv->lib->nic_config(priv);
Johannes Bergecdb9752012-03-06 13:31:03 -08002251}
2252
Johannes Berg9eae88f2012-03-15 13:26:52 -07002253static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
Johannes Berge755f882012-03-07 09:52:16 -08002254{
2255 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
Johannes Berg9eae88f2012-03-15 13:26:52 -07002256 int ac = priv->queue_to_ac[queue];
2257
2258 if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
2259 return;
2260
2261 if (atomic_inc_return(&priv->ac_stop_count[ac]) > 1) {
2262 IWL_DEBUG_TX_QUEUES(priv,
2263 "queue %d (AC %d) already stopped\n",
2264 queue, ac);
2265 return;
2266 }
Johannes Berge755f882012-03-07 09:52:16 -08002267
2268 set_bit(ac, &priv->transport_queue_stop);
2269 ieee80211_stop_queue(priv->hw, ac);
2270}
2271
Johannes Berg9eae88f2012-03-15 13:26:52 -07002272static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
Johannes Berge755f882012-03-07 09:52:16 -08002273{
2274 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
Johannes Berg9eae88f2012-03-15 13:26:52 -07002275 int ac = priv->queue_to_ac[queue];
2276
2277 if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
2278 return;
2279
2280 if (atomic_dec_return(&priv->ac_stop_count[ac]) > 0) {
2281 IWL_DEBUG_TX_QUEUES(priv,
2282 "queue %d (AC %d) already awake\n",
2283 queue, ac);
2284 return;
2285 }
Johannes Berge755f882012-03-07 09:52:16 -08002286
2287 clear_bit(ac, &priv->transport_queue_stop);
2288
2289 if (!priv->passive_no_rx)
2290 ieee80211_wake_queue(priv->hw, ac);
2291}
2292
2293void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2294{
2295 int ac;
2296
2297 if (!priv->passive_no_rx)
2298 return;
2299
2300 for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) {
Emmanuel Grumbach32517152012-03-07 09:52:34 -08002301 if (!test_bit(ac, &priv->transport_queue_stop)) {
2302 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d");
Johannes Berge755f882012-03-07 09:52:16 -08002303 ieee80211_wake_queue(priv->hw, ac);
Emmanuel Grumbach32517152012-03-07 09:52:34 -08002304 } else {
2305 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d");
2306 }
Johannes Berge755f882012-03-07 09:52:16 -08002307 }
2308
2309 priv->passive_no_rx = false;
2310}
2311
Meenakshi Venkataramanae625db2012-03-13 15:24:44 -07002312static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2313{
2314 struct ieee80211_tx_info *info;
2315
2316 info = IEEE80211_SKB_CB(skb);
2317 kmem_cache_free(iwl_tx_cmd_pool, (info->driver_data[1]));
2318 dev_kfree_skb_any(skb);
2319}
2320
Meenakshi Venkataramana297d952012-03-13 15:33:18 -07002321static void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2322{
2323 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2324
2325 if (state)
2326 set_bit(STATUS_RF_KILL_HW, &priv->status);
2327 else
2328 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2329
2330 wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2331}
2332
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02002333const struct iwl_op_mode_ops iwl_dvm_ops = {
2334 .start = iwl_op_mode_dvm_start,
2335 .stop = iwl_op_mode_dvm_stop,
Emmanuel Grumbachdb70f292012-02-09 16:08:15 +02002336 .rx = iwl_rx_dispatch,
Emmanuel Grumbach02e38352012-02-09 16:08:15 +02002337 .queue_full = iwl_stop_sw_queue,
2338 .queue_not_full = iwl_wake_sw_queue,
Emmanuel Grumbach7120d982012-02-09 16:08:15 +02002339 .hw_rf_kill = iwl_set_hw_rfkill_state,
Emmanuel Grumbached277c92012-02-09 16:08:15 +02002340 .free_skb = iwl_free_skb,
Emmanuel Grumbachbcb93212012-02-09 16:08:15 +02002341 .nic_error = iwl_nic_error,
Johannes Berg0e781842012-03-06 13:30:49 -08002342 .cmd_queue_full = iwl_cmd_queue_full,
Johannes Bergecdb9752012-03-06 13:31:03 -08002343 .nic_config = iwl_nic_config,
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02002344};
Zhu Yib481de92007-09-25 17:54:57 -07002345
2346/*****************************************************************************
2347 *
2348 * driver and module entry point
2349 *
2350 *****************************************************************************/
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002351
2352struct kmem_cache *iwl_tx_cmd_pool;
2353
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002354static int __init iwl_init(void)
Zhu Yib481de92007-09-25 17:54:57 -07002355{
2356
2357 int ret;
Joe Perchesc96c31e2010-07-26 14:39:58 -07002358 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
2359 pr_info(DRV_COPYRIGHT "\n");
Reinette Chatre897e1cf2008-03-28 16:21:09 -07002360
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002361 iwl_tx_cmd_pool = kmem_cache_create("iwl_dev_cmd",
2362 sizeof(struct iwl_device_cmd),
2363 sizeof(void *), 0, NULL);
2364 if (!iwl_tx_cmd_pool)
2365 return -ENOMEM;
2366
Tomas Winklere227cea2008-07-18 13:53:05 +08002367 ret = iwlagn_rate_control_register();
Reinette Chatre897e1cf2008-03-28 16:21:09 -07002368 if (ret) {
Joe Perchesc96c31e2010-07-26 14:39:58 -07002369 pr_err("Unable to register rate control algorithm: %d\n", ret);
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002370 goto error_rc_register;
Reinette Chatre897e1cf2008-03-28 16:21:09 -07002371 }
2372
Emmanuel Grumbach48d1a212011-05-24 11:39:02 +03002373 ret = iwl_pci_register_driver();
Emmanuel Grumbach48d1a212011-05-24 11:39:02 +03002374 if (ret)
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002375 goto error_pci_register;
Zhu Yib481de92007-09-25 17:54:57 -07002376 return ret;
Reinette Chatre897e1cf2008-03-28 16:21:09 -07002377
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002378error_pci_register:
Tomas Winklere227cea2008-07-18 13:53:05 +08002379 iwlagn_rate_control_unregister();
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002380error_rc_register:
2381 kmem_cache_destroy(iwl_tx_cmd_pool);
Reinette Chatre897e1cf2008-03-28 16:21:09 -07002382 return ret;
Zhu Yib481de92007-09-25 17:54:57 -07002383}
2384
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002385static void __exit iwl_exit(void)
Zhu Yib481de92007-09-25 17:54:57 -07002386{
Emmanuel Grumbach48d1a212011-05-24 11:39:02 +03002387 iwl_pci_unregister_driver();
Tomas Winklere227cea2008-07-18 13:53:05 +08002388 iwlagn_rate_control_unregister();
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002389 kmem_cache_destroy(iwl_tx_cmd_pool);
Zhu Yib481de92007-09-25 17:54:57 -07002390}
2391
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002392module_exit(iwl_exit);
2393module_init(iwl_init);
Reinette Chatrea562a9d2009-07-17 09:30:24 -07002394
2395#ifdef CONFIG_IWLWIFI_DEBUG
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07002396module_param_named(debug, iwlagn_mod_params.debug_level, uint,
2397 S_IRUGO | S_IWUSR);
Reinette Chatrea562a9d2009-07-17 09:30:24 -07002398MODULE_PARM_DESC(debug, "debug output mask");
2399#endif
2400
Wey-Yi Guy2b068612010-03-22 09:17:39 -07002401module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
2402MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
Johannes Berg74289942011-12-13 00:07:40 -08002403module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
2404MODULE_PARM_DESC(11n_disable,
2405 "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
Wey-Yi Guy2b068612010-03-22 09:17:39 -07002406module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
2407 int, S_IRUGO);
2408MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
Wey-Yi Guy2b068612010-03-22 09:17:39 -07002409module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
2410MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
Johannes Bergdd7a2502010-04-28 23:33:10 -07002411
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07002412module_param_named(ucode_alternative,
2413 iwlagn_mod_params.wanted_ucode_alternative,
2414 int, S_IRUGO);
Johannes Bergdd7a2502010-04-28 23:33:10 -07002415MODULE_PARM_DESC(ucode_alternative,
2416 "specify ucode alternative to use from ucode file");
Wey-Yi Guybee008b2010-08-23 07:57:04 -07002417
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07002418module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
2419 int, S_IRUGO);
Wey-Yi Guybee008b2010-08-23 07:57:04 -07002420MODULE_PARM_DESC(antenna_coupling,
2421 "specify antenna coupling in dB (defualt: 0 dB)");
Wey-Yi Guyf37837c2010-08-23 07:57:12 -07002422
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07002423module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
2424 bool, S_IRUGO);
Wey-Yi Guy9f28ebc2010-11-26 13:24:19 -08002425MODULE_PARM_DESC(bt_ch_inhibition,
Wey-Yi Guyfee84f0d2011-08-25 23:10:57 -07002426 "Enable BT channel inhibition (default: enable)");
Stanislaw Gruszkab7977ff2011-02-28 14:33:15 +01002427
2428module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
2429MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
2430
Wey-Yi Guy9995ffe2011-12-02 08:19:19 -08002431module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
Wey-Yi Guy300d0832011-06-25 09:17:41 -07002432MODULE_PARM_DESC(wd_disable,
Wey-Yi Guy9995ffe2011-12-02 08:19:19 -08002433 "Disable stuck queue watchdog timer 0=system default, "
2434 "1=disable, 2=enable (default: 0)");
Wey-Yi Guy300d0832011-06-25 09:17:41 -07002435
Wey-Yi Guyb60eec92011-06-03 13:52:38 -07002436/*
2437 * set bt_coex_active to true, uCode will do kill/defer
2438 * every time the priority line is asserted (BT is sending signals on the
2439 * priority line in the PCIx).
2440 * set bt_coex_active to false, uCode will ignore the BT activity and
2441 * perform the normal operation
2442 *
2443 * User might experience transmit issue on some platform due to WiFi/BT
2444 * co-exist problem. The possible behaviors are:
2445 * Able to scan and finding all the available AP
2446 * Not able to associate with any AP
2447 * On those platforms, WiFi communication can be restored by set
2448 * "bt_coex_active" module parameter to "false"
2449 *
2450 * default: bt_coex_active = true (BT_COEX_ENABLE)
2451 */
2452module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
2453 bool, S_IRUGO);
2454MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
Wey-Yi Guy6b0184c2011-06-03 13:52:39 -07002455
2456module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
2457MODULE_PARM_DESC(led_mode, "0=system default, "
Wey-Yi Guy42602dd42012-01-19 12:16:46 -08002458 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
Wey-Yi Guy3f1e5f42011-06-03 13:52:40 -07002459
Wey-Yi Guy0172b022011-06-11 10:00:05 -07002460module_param_named(power_save, iwlagn_mod_params.power_save,
2461 bool, S_IRUGO);
2462MODULE_PARM_DESC(power_save,
2463 "enable WiFi power management (default: disable)");
2464
Wey-Yi Guyf7538162011-06-11 10:00:06 -07002465module_param_named(power_level, iwlagn_mod_params.power_level,
2466 int, S_IRUGO);
2467MODULE_PARM_DESC(power_level,
2468 "default power save level (range from 1 - 5, default: 1)");
2469
Wey-Yi Guydd5b6d02011-08-25 23:10:55 -07002470module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
2471 bool, S_IRUGO);
2472MODULE_PARM_DESC(auto_agg,
2473 "enable agg w/o check traffic load (default: enable)");
2474
Wey-Yi Guy3f1e5f42011-06-03 13:52:40 -07002475/*
2476 * For now, keep using power level 1 instead of automatically
2477 * adjusting ...
2478 */
2479module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
2480 bool, S_IRUGO);
2481MODULE_PARM_DESC(no_sleep_autoadjust,
2482 "don't automatically adjust sleep level "
2483 "according to maximum network latency (default: true)");