blob: 347613049141f67338d9f97833a0684d7783d95e [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 *****************************************************************************/
Zhu Yib481de92007-09-25 17:54:57 -070029#include <linux/kernel.h>
30#include <linux/module.h>
Zhu Yib481de92007-09-25 17:54:57 -070031#include <linux/init.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090032#include <linux/slab.h>
Zhu Yib481de92007-09-25 17:54:57 -070033#include <linux/delay.h>
Alexey Dobriyand43c36d2009-10-07 17:09:06 +040034#include <linux/sched.h>
Zhu Yib481de92007-09-25 17:54:57 -070035#include <linux/skbuff.h>
36#include <linux/netdevice.h>
Zhu Yib481de92007-09-25 17:54:57 -070037#include <linux/etherdevice.h>
38#include <linux/if_arp.h>
39
Zhu Yib481de92007-09-25 17:54:57 -070040#include <net/mac80211.h>
41
42#include <asm/div64.h>
43
Assaf Krauss6bc913b2008-03-11 16:17:18 -070044#include "iwl-eeprom.h"
Tomas Winkler3e0d4cb2008-04-24 11:55:38 -070045#include "iwl-dev.h"
Tomas Winklerfee12472008-04-03 16:05:21 -070046#include "iwl-core.h"
Tomas Winkler3395f6e2008-03-25 16:33:37 -070047#include "iwl-io.h"
Johannes Berg0de76732010-09-22 18:02:11 +020048#include "iwl-agn-calib.h"
Johannes Berga1175122010-01-21 06:21:10 -080049#include "iwl-agn.h"
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -070050#include "iwl-shared.h"
Emmanuel Grumbachc85eb612011-06-14 10:13:24 +030051#include "iwl-trans.h"
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +020052#include "iwl-op-mode.h"
Christoph Hellwig416e1432007-10-25 17:15:49 +080053
Zhu Yib481de92007-09-25 17:54:57 -070054/******************************************************************************
55 *
56 * module boiler plate
57 *
58 ******************************************************************************/
59
Zhu Yib481de92007-09-25 17:54:57 -070060/*
61 * module name, copyright, version, etc.
Zhu Yib481de92007-09-25 17:54:57 -070062 */
Tomas Winklerd783b062008-07-18 13:53:02 +080063#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
Zhu Yib481de92007-09-25 17:54:57 -070064
Tomas Winkler0a6857e2008-03-12 16:58:49 -070065#ifdef CONFIG_IWLWIFI_DEBUG
Zhu Yib481de92007-09-25 17:54:57 -070066#define VD "d"
67#else
68#define VD
69#endif
70
Reinette Chatre81963d62010-01-22 14:22:57 -080071#define DRV_VERSION IWLWIFI_VERSION VD
Zhu Yib481de92007-09-25 17:54:57 -070072
Zhu Yib481de92007-09-25 17:54:57 -070073
74MODULE_DESCRIPTION(DRV_DESCRIPTION);
75MODULE_VERSION(DRV_VERSION);
Tomas Winklera7b75202008-12-11 10:33:41 -080076MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
Zhu Yib481de92007-09-25 17:54:57 -070077MODULE_LICENSE("GPL");
Don Fry3c607d22011-09-30 11:40:20 -070078MODULE_ALIAS("iwlagn");
Zhu Yib481de92007-09-25 17:54:57 -070079
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -070080void iwl_update_chain_flags(struct iwl_priv *priv)
Mohamed Abbas5da4b552008-04-21 15:41:51 -070081{
Johannes Berg246ed352010-08-23 10:46:32 +020082 struct iwl_rxon_context *ctx;
Mohamed Abbas5da4b552008-04-21 15:41:51 -070083
Wey-Yi Guye3f10ce2011-07-01 07:59:26 -070084 for_each_context(priv, ctx) {
85 iwlagn_set_rxon_chain(priv, ctx);
86 if (ctx->active.rx_chain != ctx->staging.rx_chain)
87 iwlagn_commit_rxon(priv, ctx);
Johannes Berg246ed352010-08-23 10:46:32 +020088 }
Mohamed Abbas5da4b552008-04-21 15:41:51 -070089}
90
Daniel C Halperin47ff65c2009-11-13 11:56:33 -080091/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
92static void iwl_set_beacon_tim(struct iwl_priv *priv,
Johannes Berg77834542010-10-04 05:50:36 -070093 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
94 u8 *beacon, u32 frame_size)
Daniel C Halperin47ff65c2009-11-13 11:56:33 -080095{
96 u16 tim_idx;
97 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
98
99 /*
100 * The index is relative to frame start but we start looking at the
101 * variable-length part of the beacon.
102 */
103 tim_idx = mgmt->u.beacon.variable - beacon;
104
105 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
106 while ((tim_idx < (frame_size - 2)) &&
107 (beacon[tim_idx] != WLAN_EID_TIM))
108 tim_idx += beacon[tim_idx+1] + 2;
109
110 /* If TIM field was found, set variables */
111 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
112 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
113 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
114 } else
115 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
116}
117
Johannes Berg8a98d492011-04-29 09:48:14 -0700118int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800119{
120 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
Johannes Berg8a98d492011-04-29 09:48:14 -0700121 struct iwl_host_cmd cmd = {
122 .id = REPLY_TX_BEACON,
Emmanuel Grumbache419d622011-07-08 08:46:14 -0700123 .flags = CMD_SYNC,
Johannes Berg8a98d492011-04-29 09:48:14 -0700124 };
Johannes Berg0b5b3ff2011-06-22 06:33:43 -0700125 struct ieee80211_tx_info *info;
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800126 u32 frame_size;
127 u32 rate_flags;
128 u32 rate;
Johannes Berg8a98d492011-04-29 09:48:14 -0700129
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800130 /*
131 * We have to set up the TX command, the TX Beacon command, and the
132 * beacon contents.
133 */
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800134
Johannes Bergb1eea292012-03-06 13:30:42 -0800135 lockdep_assert_held(&priv->mutex);
Johannes Berg76d04812010-08-23 10:46:47 +0200136
137 if (!priv->beacon_ctx) {
138 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
Julia Lawall950094c2010-09-05 21:00:26 +0200139 return 0;
Johannes Berg76d04812010-08-23 10:46:47 +0200140 }
141
Johannes Berg8a98d492011-04-29 09:48:14 -0700142 if (WARN_ON(!priv->beacon_skb))
143 return -EINVAL;
144
Johannes Berg4ce7cc22011-05-13 11:57:40 -0700145 /* Allocate beacon command */
146 if (!priv->beacon_cmd)
147 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
148 tx_beacon_cmd = priv->beacon_cmd;
Johannes Berg8a98d492011-04-29 09:48:14 -0700149 if (!tx_beacon_cmd)
150 return -ENOMEM;
151
152 frame_size = priv->beacon_skb->len;
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800153
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800154 /* Set up TX command fields */
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800155 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
Johannes Berg76d04812010-08-23 10:46:47 +0200156 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800157 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800158 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800159 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
160
161 /* Set up TX beacon command fields */
Johannes Berg4ce7cc22011-05-13 11:57:40 -0700162 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
Johannes Berg77834542010-10-04 05:50:36 -0700163 frame_size);
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800164
165 /* Set up packet rate and flags */
Johannes Berg0b5b3ff2011-06-22 06:33:43 -0700166 info = IEEE80211_SKB_CB(priv->beacon_skb);
167
168 /*
169 * Let's set up the rate at least somewhat correctly;
170 * it will currently not actually be used by the uCode,
171 * it uses the broadcast station's rate instead.
172 */
173 if (info->control.rates[0].idx < 0 ||
174 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
175 rate = 0;
176 else
177 rate = info->control.rates[0].idx;
178
Johannes Berg0e1654f2010-05-18 02:48:36 -0700179 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
Emmanuel Grumbachd6189122011-08-25 23:10:39 -0700180 hw_params(priv).valid_tx_ant);
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800181 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
Johannes Berg0b5b3ff2011-06-22 06:33:43 -0700182
183 /* In mac80211, rates for 5 GHz start at 0 */
184 if (info->band == IEEE80211_BAND_5GHZ)
185 rate += IWL_FIRST_OFDM_RATE;
186 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800187 rate_flags |= RATE_MCS_CCK_MSK;
Johannes Berg0b5b3ff2011-06-22 06:33:43 -0700188
189 tx_beacon_cmd->tx.rate_n_flags =
190 iwl_hw_set_rate_n_flags(rate, rate_flags);
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800191
Johannes Berg8a98d492011-04-29 09:48:14 -0700192 /* Submit command */
Johannes Berg4ce7cc22011-05-13 11:57:40 -0700193 cmd.len[0] = sizeof(*tx_beacon_cmd);
Johannes Berg3fa50732011-05-04 07:50:38 -0700194 cmd.data[0] = tx_beacon_cmd;
Johannes Berg4ce7cc22011-05-13 11:57:40 -0700195 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
196 cmd.len[1] = frame_size;
197 cmd.data[1] = priv->beacon_skb->data;
198 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
Johannes Berg2295c662010-10-23 09:15:41 -0700199
Johannes Berge10a0532012-03-06 13:30:39 -0800200 return iwl_dvm_send_cmd(priv, &cmd);
Samuel Ortiza8e74e272009-01-23 13:45:14 -0800201}
202
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700203static void iwl_bg_beacon_update(struct work_struct *work)
Zhu Yib481de92007-09-25 17:54:57 -0700204{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -0700205 struct iwl_priv *priv =
206 container_of(work, struct iwl_priv, beacon_update);
Zhu Yib481de92007-09-25 17:54:57 -0700207 struct sk_buff *beacon;
208
Johannes Bergb1eea292012-03-06 13:30:42 -0800209 mutex_lock(&priv->mutex);
Johannes Berg76d04812010-08-23 10:46:47 +0200210 if (!priv->beacon_ctx) {
211 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
212 goto out;
Zhu Yib481de92007-09-25 17:54:57 -0700213 }
214
Johannes Berg60744f62010-08-23 10:46:50 +0200215 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
216 /*
217 * The ucode will send beacon notifications even in
218 * IBSS mode, but we don't want to process them. But
219 * we need to defer the type check to here due to
220 * requiring locking around the beacon_ctx access.
221 */
222 goto out;
223 }
224
Johannes Berg76d04812010-08-23 10:46:47 +0200225 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
226 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
227 if (!beacon) {
Johannes Berg77834542010-10-04 05:50:36 -0700228 IWL_ERR(priv, "update beacon failed -- keeping old\n");
Johannes Berg76d04812010-08-23 10:46:47 +0200229 goto out;
230 }
231
Zhu Yib481de92007-09-25 17:54:57 -0700232 /* new beacon skb is allocated every time; dispose previous.*/
Johannes Berg77834542010-10-04 05:50:36 -0700233 dev_kfree_skb(priv->beacon_skb);
Zhu Yib481de92007-09-25 17:54:57 -0700234
Johannes Berg12e934d2010-10-04 05:50:06 -0700235 priv->beacon_skb = beacon;
Zhu Yib481de92007-09-25 17:54:57 -0700236
Johannes Berg2295c662010-10-23 09:15:41 -0700237 iwlagn_send_beacon_cmd(priv);
Johannes Berg76d04812010-08-23 10:46:47 +0200238 out:
Johannes Bergb1eea292012-03-06 13:30:42 -0800239 mutex_unlock(&priv->mutex);
Zhu Yib481de92007-09-25 17:54:57 -0700240}
241
Wey-Yi Guyfbba9412010-08-23 07:57:10 -0700242static void iwl_bg_bt_runtime_config(struct work_struct *work)
243{
244 struct iwl_priv *priv =
245 container_of(work, struct iwl_priv, bt_runtime_config);
246
Don Fry83626402012-03-07 09:52:37 -0800247 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Wey-Yi Guyfbba9412010-08-23 07:57:10 -0700248 return;
249
250 /* dont send host command if rf-kill is on */
Don Fry83626402012-03-07 09:52:37 -0800251 if (!iwl_is_ready_rf(priv))
Wey-Yi Guyfbba9412010-08-23 07:57:10 -0700252 return;
Wey-Yi Guye55b5172011-06-28 11:46:28 -0700253 iwlagn_send_advance_bt_config(priv);
Wey-Yi Guyfbba9412010-08-23 07:57:10 -0700254}
255
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700256static void iwl_bg_bt_full_concurrency(struct work_struct *work)
257{
258 struct iwl_priv *priv =
259 container_of(work, struct iwl_priv, bt_full_concurrency);
Johannes Berg246ed352010-08-23 10:46:32 +0200260 struct iwl_rxon_context *ctx;
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700261
Johannes Bergb1eea292012-03-06 13:30:42 -0800262 mutex_lock(&priv->mutex);
Stanislaw Gruszkadc1a4062011-03-31 17:36:27 +0200263
Don Fry83626402012-03-07 09:52:37 -0800264 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Stanislaw Gruszkadc1a4062011-03-31 17:36:27 +0200265 goto out;
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700266
267 /* dont send host command if rf-kill is on */
Don Fry83626402012-03-07 09:52:37 -0800268 if (!iwl_is_ready_rf(priv))
Stanislaw Gruszkadc1a4062011-03-31 17:36:27 +0200269 goto out;
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700270
271 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
272 priv->bt_full_concurrent ?
273 "full concurrency" : "3-wire");
274
275 /*
276 * LQ & RXON updated cmds must be sent before BT Config cmd
277 * to avoid 3-wire collisions
278 */
Johannes Berg246ed352010-08-23 10:46:32 +0200279 for_each_context(priv, ctx) {
Wey-Yi Guye3f10ce2011-07-01 07:59:26 -0700280 iwlagn_set_rxon_chain(priv, ctx);
Wey-Yi Guy805a3b82011-06-03 07:54:16 -0700281 iwlagn_commit_rxon(priv, ctx);
Johannes Berg246ed352010-08-23 10:46:32 +0200282 }
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700283
Wey-Yi Guye55b5172011-06-28 11:46:28 -0700284 iwlagn_send_advance_bt_config(priv);
Stanislaw Gruszkadc1a4062011-03-31 17:36:27 +0200285out:
Johannes Bergb1eea292012-03-06 13:30:42 -0800286 mutex_unlock(&priv->mutex);
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700287}
288
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800289/**
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700290 * iwl_bg_statistics_periodic - Timer callback to queue statistics
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800291 *
292 * This callback is provided in order to send a statistics request.
293 *
294 * This timer function is continually reset to execute within
295 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
296 * was received. We need to ensure we receive the statistics in order
297 * to update the temperature used for calibrating the TXPOWER.
298 */
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700299static void iwl_bg_statistics_periodic(unsigned long data)
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800300{
301 struct iwl_priv *priv = (struct iwl_priv *)data;
302
Don Fry83626402012-03-07 09:52:37 -0800303 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800304 return;
305
Mohamed Abbas61780ee2008-10-29 14:05:49 -0700306 /* dont send host command if rf-kill is on */
Don Fry83626402012-03-07 09:52:37 -0800307 if (!iwl_is_ready_rf(priv))
Mohamed Abbas61780ee2008-10-29 14:05:49 -0700308 return;
309
Wey-Yi Guyef8d5522009-11-13 11:56:28 -0800310 iwl_send_statistics_request(priv, CMD_ASYNC, false);
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800311}
312
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800313
314static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
315 u32 start_idx, u32 num_events,
Johannes Berg98d4bf02012-01-13 11:56:11 +0100316 u32 capacity, u32 mode)
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800317{
318 u32 i;
319 u32 ptr; /* SRAM byte address of log data */
320 u32 ev, time, data; /* event log data */
321 unsigned long reg_flags;
322
323 if (mode == 0)
324 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
325 else
326 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
327
328 /* Make sure device is powered up for SRAM reads */
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200329 spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
Stanislaw Gruszkabfe4b802012-03-07 09:52:24 -0800330 if (unlikely(!iwl_grab_nic_access(trans(priv)))) {
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200331 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800332 return;
333 }
334
335 /* Set starting address; reads will auto-increment */
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200336 iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800337
338 /*
Johannes Berg98d4bf02012-01-13 11:56:11 +0100339 * Refuse to read more than would have fit into the log from
340 * the current start_idx. This used to happen due to the race
341 * described below, but now WARN because the code below should
342 * prevent it from happening here.
343 */
344 if (WARN_ON(num_events > capacity - start_idx))
345 num_events = capacity - start_idx;
346
347 /*
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800348 * "time" is actually "data" for mode 0 (no timestamp).
349 * place event id # at far right for easier visual parsing.
350 */
351 for (i = 0; i < num_events; i++) {
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200352 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
353 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800354 if (mode == 0) {
Johannes Berg6c1011e2012-03-06 13:30:48 -0800355 trace_iwlwifi_dev_ucode_cont_event(
356 trans(priv)->dev, 0, time, ev);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800357 } else {
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200358 data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
Johannes Berg6c1011e2012-03-06 13:30:48 -0800359 trace_iwlwifi_dev_ucode_cont_event(
360 trans(priv)->dev, time, data, ev);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800361 }
362 }
363 /* Allow device to power down */
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200364 iwl_release_nic_access(trans(priv));
365 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800366}
367
Johannes Berg875295f2010-01-22 14:22:55 -0800368static void iwl_continuous_event_trace(struct iwl_priv *priv)
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800369{
370 u32 capacity; /* event log capacity in # entries */
Johannes Berg98d4bf02012-01-13 11:56:11 +0100371 struct {
372 u32 capacity;
373 u32 mode;
374 u32 wrap_counter;
375 u32 write_counter;
376 } __packed read;
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800377 u32 base; /* SRAM byte address of event log header */
378 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
379 u32 num_wraps; /* # times uCode wrapped to top of log */
380 u32 next_entry; /* index of next entry to be written by uCode */
381
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -0700382 base = priv->device_pointers.log_event_table;
Fry, Donald H4caab322011-07-07 15:24:07 -0700383 if (iwlagn_hw_valid_rtc_data_addr(base)) {
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200384 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
Johannes Berg98d4bf02012-01-13 11:56:11 +0100385
386 capacity = read.capacity;
387 mode = read.mode;
388 num_wraps = read.wrap_counter;
389 next_entry = read.write_counter;
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800390 } else
391 return;
392
Johannes Berg98d4bf02012-01-13 11:56:11 +0100393 /*
394 * Unfortunately, the uCode doesn't use temporary variables.
395 * Therefore, it can happen that we read next_entry == capacity,
396 * which really means next_entry == 0.
397 */
398 if (unlikely(next_entry == capacity))
399 next_entry = 0;
400 /*
401 * Additionally, the uCode increases the write pointer before
402 * the wraps counter, so if the write pointer is smaller than
403 * the old write pointer (wrap occurred) but we read that no
404 * wrap occurred, we actually read between the next_entry and
405 * num_wraps update (this does happen in practice!!) -- take
406 * that into account by increasing num_wraps.
407 */
408 if (unlikely(next_entry < priv->event_log.next_entry &&
409 num_wraps == priv->event_log.num_wraps))
410 num_wraps++;
411
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800412 if (num_wraps == priv->event_log.num_wraps) {
Johannes Berg98d4bf02012-01-13 11:56:11 +0100413 iwl_print_cont_event_trace(
414 priv, base, priv->event_log.next_entry,
415 next_entry - priv->event_log.next_entry,
416 capacity, mode);
417
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800418 priv->event_log.non_wraps_count++;
419 } else {
Johannes Berg98d4bf02012-01-13 11:56:11 +0100420 if (num_wraps - priv->event_log.num_wraps > 1)
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800421 priv->event_log.wraps_more_count++;
422 else
423 priv->event_log.wraps_once_count++;
Johannes Berg98d4bf02012-01-13 11:56:11 +0100424
Johannes Berg6c1011e2012-03-06 13:30:48 -0800425 trace_iwlwifi_dev_ucode_wrap_event(trans(priv)->dev,
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800426 num_wraps - priv->event_log.num_wraps,
427 next_entry, priv->event_log.next_entry);
Johannes Berg98d4bf02012-01-13 11:56:11 +0100428
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800429 if (next_entry < priv->event_log.next_entry) {
Johannes Berg98d4bf02012-01-13 11:56:11 +0100430 iwl_print_cont_event_trace(
431 priv, base, priv->event_log.next_entry,
432 capacity - priv->event_log.next_entry,
433 capacity, mode);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800434
Johannes Berg98d4bf02012-01-13 11:56:11 +0100435 iwl_print_cont_event_trace(
436 priv, base, 0, next_entry, capacity, mode);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800437 } else {
Johannes Berg98d4bf02012-01-13 11:56:11 +0100438 iwl_print_cont_event_trace(
439 priv, base, next_entry,
440 capacity - next_entry,
441 capacity, mode);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800442
Johannes Berg98d4bf02012-01-13 11:56:11 +0100443 iwl_print_cont_event_trace(
444 priv, base, 0, next_entry, capacity, mode);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800445 }
446 }
Johannes Berg98d4bf02012-01-13 11:56:11 +0100447
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800448 priv->event_log.num_wraps = num_wraps;
449 priv->event_log.next_entry = next_entry;
450}
451
452/**
453 * iwl_bg_ucode_trace - Timer callback to log ucode event
454 *
455 * The timer is continually set to execute every
456 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
457 * this function is to perform continuous uCode event logging operation
458 * if enabled
459 */
460static void iwl_bg_ucode_trace(unsigned long data)
461{
462 struct iwl_priv *priv = (struct iwl_priv *)data;
463
Don Fry83626402012-03-07 09:52:37 -0800464 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800465 return;
466
467 if (priv->event_log.ucode_trace) {
468 iwl_continuous_event_trace(priv);
469 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
470 mod_timer(&priv->ucode_trace,
471 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
472 }
473}
474
Wey-Yi Guy65550632010-06-24 13:18:35 -0700475static void iwl_bg_tx_flush(struct work_struct *work)
476{
477 struct iwl_priv *priv =
478 container_of(work, struct iwl_priv, tx_flush);
479
Don Fry83626402012-03-07 09:52:37 -0800480 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Wey-Yi Guy65550632010-06-24 13:18:35 -0700481 return;
482
483 /* do nothing if rf-kill is on */
Don Fry83626402012-03-07 09:52:37 -0800484 if (!iwl_is_ready_rf(priv))
Wey-Yi Guy65550632010-06-24 13:18:35 -0700485 return;
486
Wey-Yi Guyc68744f2011-06-18 08:03:18 -0700487 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
488 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
Wey-Yi Guy65550632010-06-24 13:18:35 -0700489}
490
Johannes Berg9eae88f2012-03-15 13:26:52 -0700491/*
492 * queue/FIFO/AC mapping definitions
493 */
494
495#define IWL_TX_FIFO_BK 0 /* shared */
496#define IWL_TX_FIFO_BE 1
497#define IWL_TX_FIFO_VI 2 /* shared */
498#define IWL_TX_FIFO_VO 3
499#define IWL_TX_FIFO_BK_IPAN IWL_TX_FIFO_BK
500#define IWL_TX_FIFO_BE_IPAN 4
501#define IWL_TX_FIFO_VI_IPAN IWL_TX_FIFO_VI
502#define IWL_TX_FIFO_VO_IPAN 5
503/* re-uses the VO FIFO, uCode will properly flush/schedule */
504#define IWL_TX_FIFO_AUX 5
505#define IWL_TX_FIFO_UNUSED -1
506
507#define IWLAGN_CMD_FIFO_NUM 7
508
509/*
510 * This queue number is required for proper operation
511 * because the ucode will stop/start the scheduler as
512 * required.
513 */
514#define IWL_IPAN_MCAST_QUEUE 8
515
516static const u8 iwlagn_default_queue_to_tx_fifo[] = {
517 IWL_TX_FIFO_VO,
518 IWL_TX_FIFO_VI,
519 IWL_TX_FIFO_BE,
520 IWL_TX_FIFO_BK,
521 IWLAGN_CMD_FIFO_NUM,
522};
523
524static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
525 IWL_TX_FIFO_VO,
526 IWL_TX_FIFO_VI,
527 IWL_TX_FIFO_BE,
528 IWL_TX_FIFO_BK,
529 IWL_TX_FIFO_BK_IPAN,
530 IWL_TX_FIFO_BE_IPAN,
531 IWL_TX_FIFO_VI_IPAN,
532 IWL_TX_FIFO_VO_IPAN,
533 IWL_TX_FIFO_BE_IPAN,
534 IWLAGN_CMD_FIFO_NUM,
535 IWL_TX_FIFO_AUX,
536};
537
538static const u8 iwlagn_bss_ac_to_fifo[] = {
539 IWL_TX_FIFO_VO,
540 IWL_TX_FIFO_VI,
541 IWL_TX_FIFO_BE,
542 IWL_TX_FIFO_BK,
543};
544
545static const u8 iwlagn_bss_ac_to_queue[] = {
546 0, 1, 2, 3,
547};
548
549static const u8 iwlagn_pan_ac_to_fifo[] = {
550 IWL_TX_FIFO_VO_IPAN,
551 IWL_TX_FIFO_VI_IPAN,
552 IWL_TX_FIFO_BE_IPAN,
553 IWL_TX_FIFO_BK_IPAN,
554};
555
556static const u8 iwlagn_pan_ac_to_queue[] = {
557 7, 6, 5, 4,
558};
559
560static const u8 iwlagn_bss_queue_to_ac[] = {
561 IEEE80211_AC_VO,
562 IEEE80211_AC_VI,
563 IEEE80211_AC_BE,
564 IEEE80211_AC_BK,
565};
566
567static const u8 iwlagn_pan_queue_to_ac[] = {
568 IEEE80211_AC_VO,
569 IEEE80211_AC_VI,
570 IEEE80211_AC_BE,
571 IEEE80211_AC_BK,
572 IEEE80211_AC_BK,
573 IEEE80211_AC_BE,
574 IEEE80211_AC_VI,
575 IEEE80211_AC_VO,
576};
577
Johannes Berge6dd5832012-03-07 09:52:40 -0800578static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700579{
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700580 int i;
581
582 /*
583 * The default context is always valid,
584 * the PAN context depends on uCode.
585 */
Johannes Berga18f61b2012-03-15 13:26:53 -0700586 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700587 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
Johannes Berga18f61b2012-03-15 13:26:53 -0700588 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700589
590 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
591 priv->contexts[i].ctxid = i;
592
593 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
594 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
595 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
596 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
597 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
598 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
599 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
600 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
Don Fry87272af2012-01-25 15:26:34 -0800601 priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700602 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
603 BIT(NL80211_IFTYPE_ADHOC);
604 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
605 BIT(NL80211_IFTYPE_STATION);
606 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
607 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
608 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
609 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
Johannes Berg9eae88f2012-03-15 13:26:52 -0700610 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
611 iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
612 memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
613 iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700614
615 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
616 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
617 REPLY_WIPAN_RXON_TIMING;
618 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
619 REPLY_WIPAN_RXON_ASSOC;
620 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
621 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
622 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
623 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
624 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700625 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
626 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
Johannes Bergc6baf7f2011-07-23 10:24:47 -0700627
628 if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
629 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
630 BIT(NL80211_IFTYPE_P2P_CLIENT) |
631 BIT(NL80211_IFTYPE_P2P_GO);
632
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700633 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
634 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
635 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
Johannes Berg9eae88f2012-03-15 13:26:52 -0700636 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
637 iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
638 memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
639 iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
640 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
Johannes Berg4d2a5d02011-07-23 10:24:46 -0700641
642 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
643}
644
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700645static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
646{
647 struct iwl_ct_kill_config cmd;
648 struct iwl_ct_kill_throttling_config adv_cmd;
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700649 int ret = 0;
650
Emmanuel Grumbach1042db22012-01-03 16:56:15 +0200651 iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700652 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
Johannes Berg08ae86a2012-03-05 11:24:27 -0800653
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700654 priv->thermal_throttle.ct_kill_toggle = false;
655
Don Fry38622412011-12-16 07:07:36 -0800656 if (cfg(priv)->base_params->support_ct_kill_exit) {
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700657 adv_cmd.critical_temperature_enter =
Emmanuel Grumbachd6189122011-08-25 23:10:39 -0700658 cpu_to_le32(hw_params(priv).ct_kill_threshold);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700659 adv_cmd.critical_temperature_exit =
Emmanuel Grumbachd6189122011-08-25 23:10:39 -0700660 cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700661
Johannes Berge10a0532012-03-06 13:30:39 -0800662 ret = iwl_dvm_send_cmd_pdu(priv,
Emmanuel Grumbache419d622011-07-08 08:46:14 -0700663 REPLY_CT_KILL_CONFIG_CMD,
664 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700665 if (ret)
666 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
667 else
668 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
Emmanuel Grumbachd6189122011-08-25 23:10:39 -0700669 "succeeded, critical temperature enter is %d,"
670 "exit is %d\n",
671 hw_params(priv).ct_kill_threshold,
672 hw_params(priv).ct_kill_exit_threshold);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700673 } else {
674 cmd.critical_temperature_R =
Emmanuel Grumbachd6189122011-08-25 23:10:39 -0700675 cpu_to_le32(hw_params(priv).ct_kill_threshold);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700676
Johannes Berge10a0532012-03-06 13:30:39 -0800677 ret = iwl_dvm_send_cmd_pdu(priv,
Emmanuel Grumbache419d622011-07-08 08:46:14 -0700678 REPLY_CT_KILL_CONFIG_CMD,
679 CMD_SYNC, sizeof(cmd), &cmd);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700680 if (ret)
681 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
682 else
683 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
Emmanuel Grumbachd6189122011-08-25 23:10:39 -0700684 "succeeded, "
685 "critical temperature is %d\n",
686 hw_params(priv).ct_kill_threshold);
Wey-Yi Guy0975cc82010-07-31 08:34:07 -0700687 }
688}
689
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -0700690static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
691{
692 struct iwl_calib_cfg_cmd calib_cfg_cmd;
693 struct iwl_host_cmd cmd = {
694 .id = CALIBRATION_CFG_CMD,
Johannes Berg3fa50732011-05-04 07:50:38 -0700695 .len = { sizeof(struct iwl_calib_cfg_cmd), },
696 .data = { &calib_cfg_cmd, },
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -0700697 };
698
699 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
Wey-Yi Guyaf4dc882011-10-04 07:10:19 -0700700 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -0700701 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -0700702
Johannes Berge10a0532012-03-06 13:30:39 -0800703 return iwl_dvm_send_cmd(priv, &cmd);
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -0700704}
705
706
Wey-Yi Guye505c432011-07-07 08:27:41 -0700707static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
708{
709 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
710 .valid = cpu_to_le32(valid_tx_ant),
711 };
712
Johannes Berg0692fe42012-03-06 13:30:37 -0800713 if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
Wey-Yi Guye505c432011-07-07 08:27:41 -0700714 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
Johannes Berge10a0532012-03-06 13:30:39 -0800715 return iwl_dvm_send_cmd_pdu(priv,
Wey-Yi Guye505c432011-07-07 08:27:41 -0700716 TX_ANT_CONFIGURATION_CMD,
717 CMD_SYNC,
718 sizeof(struct iwl_tx_ant_config_cmd),
719 &tx_ant_cmd);
720 } else {
721 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
722 return -EOPNOTSUPP;
723 }
724}
725
Zhu Yib481de92007-09-25 17:54:57 -0700726/**
Tomas Winkler4a4a9e82008-05-29 16:34:54 +0800727 * iwl_alive_start - called after REPLY_ALIVE notification received
Zhu Yib481de92007-09-25 17:54:57 -0700728 * from protocol/runtime uCode (initialization uCode's
Tomas Winkler4a4a9e82008-05-29 16:34:54 +0800729 * Alive gets handled by iwl_init_alive_start()).
Zhu Yib481de92007-09-25 17:54:57 -0700730 */
Cindy H. Kao4613e722011-05-06 10:40:15 -0700731int iwl_alive_start(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700732{
Tomas Winkler57aab752008-04-14 21:16:03 -0700733 int ret = 0;
Johannes Berg246ed352010-08-23 10:46:32 +0200734 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
Zhu Yib481de92007-09-25 17:54:57 -0700735
Tomas Winklere1623442009-01-27 14:27:56 -0800736 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
Zhu Yib481de92007-09-25 17:54:57 -0700737
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700738 /* After the ALIVE response, we can send host commands to the uCode */
Don Fry83626402012-03-07 09:52:37 -0800739 set_bit(STATUS_ALIVE, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -0700740
Stanislaw Gruszka22de94d2010-12-03 15:41:48 +0100741 /* Enable watchdog to monitor the driver tx queues */
742 iwl_setup_watchdog(priv);
Wey-Yi Guyb74e31a2010-03-01 17:23:50 -0800743
Don Fry83626402012-03-07 09:52:37 -0800744 if (iwl_is_rfkill(priv))
Johannes Bergca7966c2011-04-22 10:15:23 -0700745 return -ERFKILL;
Zhu Yib481de92007-09-25 17:54:57 -0700746
Johannes Berg98d4bf02012-01-13 11:56:11 +0100747 if (priv->event_log.ucode_trace) {
748 /* start collecting data now */
749 mod_timer(&priv->ucode_trace, jiffies);
750 }
751
Wey-Yi Guybc795df2010-10-11 14:24:05 -0700752 /* download priority table before any calibration request */
Don Fry38622412011-12-16 07:07:36 -0800753 if (cfg(priv)->bt_params &&
754 cfg(priv)->bt_params->advanced_bt_coexist) {
Wey-Yi Guyf7322f82010-08-23 15:24:49 -0700755 /* Configure Bluetooth device coexistence support */
Don Fry38622412011-12-16 07:07:36 -0800756 if (cfg(priv)->bt_params->bt_sco_disable)
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -0700757 priv->bt_enable_pspoll = false;
758 else
759 priv->bt_enable_pspoll = true;
760
Wey-Yi Guyf7322f82010-08-23 15:24:49 -0700761 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
762 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
763 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
Wey-Yi Guye55b5172011-06-28 11:46:28 -0700764 iwlagn_send_advance_bt_config(priv);
Wey-Yi Guyf7322f82010-08-23 15:24:49 -0700765 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -0700766 priv->cur_rssi_ctx = NULL;
767
Johannes Berge1991882012-03-06 13:30:36 -0800768 iwl_send_prio_tbl(priv);
Wey-Yi Guyf7322f82010-08-23 15:24:49 -0700769
770 /* FIXME: w/a to force change uCode BT state machine */
Johannes Berge1991882012-03-06 13:30:36 -0800771 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
Johannes Bergca7966c2011-04-22 10:15:23 -0700772 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
773 if (ret)
774 return ret;
Johannes Berge1991882012-03-06 13:30:36 -0800775 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
Johannes Bergca7966c2011-04-22 10:15:23 -0700776 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
777 if (ret)
778 return ret;
Wey-Yi Guye55b5172011-06-28 11:46:28 -0700779 } else {
780 /*
781 * default is 2-wire BT coexexistence support
782 */
783 iwl_send_bt_config(priv);
Wey-Yi Guyf7322f82010-08-23 15:24:49 -0700784 }
Wey-Yi Guye55b5172011-06-28 11:46:28 -0700785
Venkataraman, Meenakshi885765f2011-12-14 16:54:21 -0800786 /*
787 * Perform runtime calibrations, including DC calibration.
788 */
789 iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
Wey-Yi Guybc795df2010-10-11 14:24:05 -0700790
Johannes Berg36d68252008-05-15 12:55:26 +0200791 ieee80211_wake_queues(priv->hw);
Zhu Yib481de92007-09-25 17:54:57 -0700792
Johannes Berg470ab2d2010-01-21 11:23:30 -0800793 priv->active_rate = IWL_RATES_MASK;
Zhu Yib481de92007-09-25 17:54:57 -0700794
Wey-Yi Guy2f748de2009-09-17 10:43:51 -0700795 /* Configure Tx antenna selection based on H/W config */
Johannes Berg7e79a392012-03-05 11:24:32 -0800796 iwlagn_send_tx_ant_config(priv, hw_params(priv).valid_tx_ant);
Wey-Yi Guy2f748de2009-09-17 10:43:51 -0700797
Johannes Berg15b86bf2012-03-05 11:24:36 -0800798 if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
Gregory Greenmanc1adf9f2008-05-15 13:53:59 +0800799 struct iwl_rxon_cmd *active_rxon =
Johannes Berg246ed352010-08-23 10:46:32 +0200800 (struct iwl_rxon_cmd *)&ctx->active;
Mohamed Abbas019fb972009-03-17 21:59:18 -0700801 /* apply any changes in staging */
Johannes Berg246ed352010-08-23 10:46:32 +0200802 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
Zhu Yib481de92007-09-25 17:54:57 -0700803 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
804 } else {
Johannes Bergd0fe4782010-08-23 10:46:58 +0200805 struct iwl_rxon_context *tmp;
Zhu Yib481de92007-09-25 17:54:57 -0700806 /* Initialize our rx_config data */
Johannes Bergd0fe4782010-08-23 10:46:58 +0200807 for_each_context(priv, tmp)
808 iwl_connection_init_rx_config(priv, tmp);
Abhijeet Kolekar45823532009-04-08 11:26:44 -0700809
Wey-Yi Guye3f10ce2011-07-01 07:59:26 -0700810 iwlagn_set_rxon_chain(priv, ctx);
Zhu Yib481de92007-09-25 17:54:57 -0700811 }
812
Johannes Berg15b86bf2012-03-05 11:24:36 -0800813 if (!priv->wowlan) {
Johannes Bergc8ac61c2011-07-15 13:23:45 -0700814 /* WoWLAN ucode will not reply in the same way, skip it */
815 iwl_reset_run_time_calib(priv);
816 }
Tomas Winkler4a4a9e82008-05-29 16:34:54 +0800817
Don Fry83626402012-03-07 09:52:37 -0800818 set_bit(STATUS_READY, &priv->status);
Wey-Yi Guy9e2e7422010-11-12 13:52:37 -0800819
Zhu Yib481de92007-09-25 17:54:57 -0700820 /* Configure the adapter for unassociated operation */
Wey-Yi Guy805a3b82011-06-03 07:54:16 -0700821 ret = iwlagn_commit_rxon(priv, ctx);
Johannes Bergca7966c2011-04-22 10:15:23 -0700822 if (ret)
823 return ret;
Zhu Yib481de92007-09-25 17:54:57 -0700824
825 /* At this point, the NIC is initialized and operational */
Emmanuel Grumbach47f4a582008-06-12 09:47:13 +0800826 iwl_rf_kill_ct_config(priv);
Zhu Yi5a66926a2008-01-14 17:46:18 -0800827
Tomas Winklere1623442009-01-27 14:27:56 -0800828 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
Zhu Yib481de92007-09-25 17:54:57 -0700829
Johannes Bergca7966c2011-04-22 10:15:23 -0700830 return iwl_power_update_mode(priv, true);
Zhu Yib481de92007-09-25 17:54:57 -0700831}
832
Johannes Bergd3163832012-03-05 11:24:19 -0800833/**
834 * iwl_clear_driver_stations - clear knowledge of all stations from driver
835 * @priv: iwl priv struct
836 *
837 * This is called during iwl_down() to make sure that in the case
838 * we're coming there from a hardware restart mac80211 will be
839 * able to reconfigure stations -- if we're getting there in the
840 * normal down flow then the stations will already be cleared.
841 */
842static void iwl_clear_driver_stations(struct iwl_priv *priv)
843{
Johannes Bergd3163832012-03-05 11:24:19 -0800844 struct iwl_rxon_context *ctx;
845
Johannes Bergfa23cb02012-03-05 11:24:25 -0800846 spin_lock_bh(&priv->sta_lock);
Johannes Bergd3163832012-03-05 11:24:19 -0800847 memset(priv->stations, 0, sizeof(priv->stations));
848 priv->num_stations = 0;
849
850 priv->ucode_key_table = 0;
851
852 for_each_context(priv, ctx) {
853 /*
854 * Remove all key information that is not stored as part
855 * of station information since mac80211 may not have had
856 * a chance to remove all the keys. When device is
857 * reconfigured by mac80211 after an error all keys will
858 * be reconfigured.
859 */
860 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
861 ctx->key_mapping_keys = 0;
862 }
863
Johannes Bergfa23cb02012-03-05 11:24:25 -0800864 spin_unlock_bh(&priv->sta_lock);
Johannes Bergd3163832012-03-05 11:24:19 -0800865}
866
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -0800867void iwl_down(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700868{
Dan Carpenter22dd2fd2011-03-15 10:03:24 +0300869 int exit_pending;
Zhu Yib481de92007-09-25 17:54:57 -0700870
Tomas Winklere1623442009-01-27 14:27:56 -0800871 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
Zhu Yib481de92007-09-25 17:54:57 -0700872
Johannes Bergb1eea292012-03-06 13:30:42 -0800873 lockdep_assert_held(&priv->mutex);
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -0800874
Stanislaw Gruszkad745d472010-09-13 14:46:35 +0200875 iwl_scan_cancel_timeout(priv, 200);
876
Johannes Bergc6baf7f2011-07-23 10:24:47 -0700877 /*
878 * If active, scanning won't cancel it, so say it expired.
879 * No race since we hold the mutex here and a new one
880 * can't come in at this time.
881 */
882 ieee80211_remain_on_channel_expired(priv->hw);
883
Emmanuel Grumbach63013ae2011-08-25 23:10:42 -0700884 exit_pending =
Don Fry83626402012-03-07 09:52:37 -0800885 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -0700886
Stanislaw Gruszkab62177a2010-08-20 15:23:47 +0200887 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
888 * to prevent rearm timer */
Stanislaw Gruszka22de94d2010-12-03 15:41:48 +0100889 del_timer_sync(&priv->watchdog);
Stanislaw Gruszkab62177a2010-08-20 15:23:47 +0200890
Johannes Bergdcef7322010-08-27 08:55:52 -0700891 iwl_clear_ucode_stations(priv, NULL);
Johannes Berga194e322010-08-27 08:53:46 -0700892 iwl_dealloc_bcast_stations(priv);
Johannes Bergdb125c72010-05-07 01:49:15 -0700893 iwl_clear_driver_stations(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700894
Johannes Berga1174132010-08-23 07:56:59 -0700895 /* reset BT coex data */
Wey-Yi Guyda5dbb92010-08-23 07:57:13 -0700896 priv->bt_status = 0;
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -0700897 priv->cur_rssi_ctx = NULL;
898 priv->bt_is_sco = 0;
Don Fry38622412011-12-16 07:07:36 -0800899 if (cfg(priv)->bt_params)
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -0700900 priv->bt_traffic_load =
Don Fry38622412011-12-16 07:07:36 -0800901 cfg(priv)->bt_params->bt_init_traffic_load;
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -0700902 else
903 priv->bt_traffic_load = 0;
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700904 priv->bt_full_concurrent = false;
905 priv->bt_ci_compliance = 0;
Johannes Berga1174132010-08-23 07:56:59 -0700906
Zhu Yib481de92007-09-25 17:54:57 -0700907 /* Wipe out the EXIT_PENDING status bit if we are not actually
908 * exiting the module */
909 if (!exit_pending)
Don Fry83626402012-03-07 09:52:37 -0800910 clear_bit(STATUS_EXIT_PENDING, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -0700911
Emmanuel Grumbach859cfb02011-09-15 11:46:31 -0700912 if (priv->mac80211_registered)
Zhu Yib481de92007-09-25 17:54:57 -0700913 ieee80211_stop_queues(priv->hw);
914
David Spinadel8f7ffbe2012-03-10 13:00:10 -0800915 priv->ucode_loaded = false;
Emmanuel Grumbach909e9b22011-09-15 11:46:30 -0700916 iwl_trans_stop_device(trans(priv));
917
Johannes Berg1a10f432011-04-13 03:14:44 -0700918 /* Clear out all status bits but a few that are stable across reset */
Don Fry1353a7b2012-03-07 09:52:43 -0800919 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
Zhu Yib481de92007-09-25 17:54:57 -0700920 STATUS_RF_KILL_HW |
Don Fry83626402012-03-07 09:52:37 -0800921 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
Reinette Chatre97888642008-02-06 11:20:38 -0800922 STATUS_GEO_CONFIGURED |
Don Fry83626402012-03-07 09:52:37 -0800923 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
Mohamed Abbas052ec3f2008-06-30 17:23:15 +0800924 STATUS_EXIT_PENDING;
Don Fry1353a7b2012-03-07 09:52:43 -0800925 priv->shrd->status &=
926 test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
927 STATUS_FW_ERROR;
Zhu Yib481de92007-09-25 17:54:57 -0700928
Johannes Berg77834542010-10-04 05:50:36 -0700929 dev_kfree_skb(priv->beacon_skb);
Johannes Berg12e934d2010-10-04 05:50:06 -0700930 priv->beacon_skb = NULL;
Zhu Yib481de92007-09-25 17:54:57 -0700931}
932
Zhu Yib481de92007-09-25 17:54:57 -0700933/*****************************************************************************
934 *
935 * Workqueue callbacks
936 *
937 *****************************************************************************/
938
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +0800939static void iwl_bg_run_time_calib_work(struct work_struct *work)
940{
941 struct iwl_priv *priv = container_of(work, struct iwl_priv,
942 run_time_calib_work);
943
Johannes Bergb1eea292012-03-06 13:30:42 -0800944 mutex_lock(&priv->mutex);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +0800945
Don Fry83626402012-03-07 09:52:37 -0800946 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
947 test_bit(STATUS_SCANNING, &priv->status)) {
Johannes Bergb1eea292012-03-06 13:30:42 -0800948 mutex_unlock(&priv->mutex);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +0800949 return;
950 }
951
952 if (priv->start_calib) {
Johannes Berg0da0e5b2011-04-08 08:14:56 -0700953 iwl_chain_noise_calibration(priv);
954 iwl_sensitivity_calibration(priv);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +0800955 }
956
Johannes Bergb1eea292012-03-06 13:30:42 -0800957 mutex_unlock(&priv->mutex);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +0800958}
959
Wey-Yi Guy73356132011-11-10 06:55:11 -0800960void iwlagn_prepare_restart(struct iwl_priv *priv)
Johannes Berge43e85c2011-04-19 07:45:16 -0700961{
962 struct iwl_rxon_context *ctx;
963 bool bt_full_concurrent;
964 u8 bt_ci_compliance;
965 u8 bt_load;
966 u8 bt_status;
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -0700967 bool bt_is_sco;
Johannes Berg9eae88f2012-03-15 13:26:52 -0700968 int i;
Johannes Berge43e85c2011-04-19 07:45:16 -0700969
Johannes Bergb1eea292012-03-06 13:30:42 -0800970 lockdep_assert_held(&priv->mutex);
Johannes Berge43e85c2011-04-19 07:45:16 -0700971
972 for_each_context(priv, ctx)
973 ctx->vif = NULL;
974 priv->is_open = 0;
975
976 /*
977 * __iwl_down() will clear the BT status variables,
978 * which is correct, but when we restart we really
979 * want to keep them so restore them afterwards.
980 *
981 * The restart process will later pick them up and
982 * re-configure the hw when we reconfigure the BT
983 * command.
984 */
985 bt_full_concurrent = priv->bt_full_concurrent;
986 bt_ci_compliance = priv->bt_ci_compliance;
987 bt_load = priv->bt_traffic_load;
988 bt_status = priv->bt_status;
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -0700989 bt_is_sco = priv->bt_is_sco;
Johannes Berge43e85c2011-04-19 07:45:16 -0700990
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -0800991 iwl_down(priv);
Johannes Berge43e85c2011-04-19 07:45:16 -0700992
993 priv->bt_full_concurrent = bt_full_concurrent;
994 priv->bt_ci_compliance = bt_ci_compliance;
995 priv->bt_traffic_load = bt_load;
996 priv->bt_status = bt_status;
Meenakshi Venkataraman207ecc52011-07-08 08:46:23 -0700997 priv->bt_is_sco = bt_is_sco;
Johannes Berg9eae88f2012-03-15 13:26:52 -0700998
999 /* reset all queues */
1000 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1001 atomic_set(&priv->ac_stop_count[i], 0);
1002
1003 for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1004 priv->queue_to_ac[i] = IWL_INVALID_AC;
1005
1006 memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
Johannes Berge43e85c2011-04-19 07:45:16 -07001007}
1008
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001009static void iwl_bg_restart(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07001010{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07001011 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
Zhu Yib481de92007-09-25 17:54:57 -07001012
Don Fry83626402012-03-07 09:52:37 -08001013 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Zhu Yib481de92007-09-25 17:54:57 -07001014 return;
1015
Emmanuel Grumbach63013ae2011-08-25 23:10:42 -07001016 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
Johannes Bergb1eea292012-03-06 13:30:42 -08001017 mutex_lock(&priv->mutex);
Johannes Berge43e85c2011-04-19 07:45:16 -07001018 iwlagn_prepare_restart(priv);
Johannes Bergb1eea292012-03-06 13:30:42 -08001019 mutex_unlock(&priv->mutex);
Johannes Berga1174132010-08-23 07:56:59 -07001020 iwl_cancel_deferred_work(priv);
Johannes Berg19cc1082009-05-08 13:44:36 -07001021 ieee80211_restart_hw(priv->hw);
1022 } else {
Johannes Bergca7966c2011-04-22 10:15:23 -07001023 WARN_ON(1);
Johannes Berg19cc1082009-05-08 13:44:36 -07001024 }
Zhu Yib481de92007-09-25 17:54:57 -07001025}
1026
Wey-Yi Guy716c74b2010-06-24 13:22:36 -07001027
Wey-Yi Guy716c74b2010-06-24 13:22:36 -07001028
Wey-Yi Guy716c74b2010-06-24 13:22:36 -07001029
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001030void iwlagn_disable_roc(struct iwl_priv *priv)
Johannes Berg9b9190d2011-01-06 08:07:10 -08001031{
1032 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
Johannes Berg9b9190d2011-01-06 08:07:10 -08001033
Johannes Bergb1eea292012-03-06 13:30:42 -08001034 lockdep_assert_held(&priv->mutex);
Johannes Berg9b9190d2011-01-06 08:07:10 -08001035
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001036 if (!priv->hw_roc_setup)
Johannes Berg9b9190d2011-01-06 08:07:10 -08001037 return;
1038
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001039 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
Johannes Berg9b9190d2011-01-06 08:07:10 -08001040 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
Johannes Berg9b9190d2011-01-06 08:07:10 -08001041
Wey-Yi Guy898ed672011-07-13 08:38:57 -07001042 priv->hw_roc_channel = NULL;
Johannes Berg9b9190d2011-01-06 08:07:10 -08001043
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001044 memset(ctx->staging.node_addr, 0, ETH_ALEN);
1045
Wey-Yi Guy805a3b82011-06-03 07:54:16 -07001046 iwlagn_commit_rxon(priv, ctx);
Johannes Berg9b9190d2011-01-06 08:07:10 -08001047
1048 ctx->is_active = false;
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001049 priv->hw_roc_setup = false;
Johannes Berg9b9190d2011-01-06 08:07:10 -08001050}
1051
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001052static void iwlagn_disable_roc_work(struct work_struct *work)
Johannes Berg9b9190d2011-01-06 08:07:10 -08001053{
1054 struct iwl_priv *priv = container_of(work, struct iwl_priv,
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001055 hw_roc_disable_work.work);
Johannes Berg9b9190d2011-01-06 08:07:10 -08001056
Johannes Bergb1eea292012-03-06 13:30:42 -08001057 mutex_lock(&priv->mutex);
Johannes Berg9b9190d2011-01-06 08:07:10 -08001058 iwlagn_disable_roc(priv);
Johannes Bergb1eea292012-03-06 13:30:42 -08001059 mutex_unlock(&priv->mutex);
Johannes Berg9b9190d2011-01-06 08:07:10 -08001060}
1061
Zhu Yib481de92007-09-25 17:54:57 -07001062/*****************************************************************************
1063 *
Zhu Yib481de92007-09-25 17:54:57 -07001064 * driver setup and teardown
1065 *
1066 *****************************************************************************/
1067
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08001068static void iwl_setup_deferred_work(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001069{
Johannes Berg1ee158d2012-02-17 10:07:44 -08001070 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
Zhu Yib481de92007-09-25 17:54:57 -07001071
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001072 INIT_WORK(&priv->restart, iwl_bg_restart);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001073 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +08001074 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
Wey-Yi Guy65550632010-06-24 13:18:35 -07001075 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
Wey-Yi Guybee008b2010-08-23 07:57:04 -07001076 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
Wey-Yi Guyfbba9412010-08-23 07:57:10 -07001077 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001078 INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1079 iwlagn_disable_roc_work);
Tomas Winkler2a421b92008-06-12 09:47:10 +08001080
Tomas Winkler2a421b92008-06-12 09:47:10 +08001081 iwl_setup_scan_deferred_work(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001082
Johannes Berg562f08e2012-03-07 09:52:18 -08001083 if (cfg(priv)->bt_params)
1084 iwlagn_bt_setup_deferred_work(priv);
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08001085
1086 init_timer(&priv->statistics_periodic);
1087 priv->statistics_periodic.data = (unsigned long)priv;
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001088 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
Zhu Yib481de92007-09-25 17:54:57 -07001089
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -08001090 init_timer(&priv->ucode_trace);
1091 priv->ucode_trace.data = (unsigned long)priv;
1092 priv->ucode_trace.function = iwl_bg_ucode_trace;
1093
Stanislaw Gruszka22de94d2010-12-03 15:41:48 +01001094 init_timer(&priv->watchdog);
1095 priv->watchdog.data = (unsigned long)priv;
1096 priv->watchdog.function = iwl_bg_watchdog;
Zhu Yib481de92007-09-25 17:54:57 -07001097}
1098
Emmanuel Grumbach78e5a462012-02-17 10:34:53 -08001099void iwl_cancel_deferred_work(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001100{
Johannes Berg562f08e2012-03-07 09:52:18 -08001101 if (cfg(priv)->bt_params)
1102 iwlagn_bt_cancel_deferred_work(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001103
Wey-Yi Guy815e6292010-06-03 10:14:01 -07001104 cancel_work_sync(&priv->run_time_calib_work);
Zhu Yib481de92007-09-25 17:54:57 -07001105 cancel_work_sync(&priv->beacon_update);
Stanislaw Gruszkae7e16b92010-09-13 14:46:41 +02001106
1107 iwl_cancel_scan_deferred_work(priv);
1108
Wey-Yi Guybee008b2010-08-23 07:57:04 -07001109 cancel_work_sync(&priv->bt_full_concurrency);
Wey-Yi Guyfbba9412010-08-23 07:57:10 -07001110 cancel_work_sync(&priv->bt_runtime_config);
Johannes Bergc6baf7f2011-07-23 10:24:47 -07001111 cancel_delayed_work_sync(&priv->hw_roc_disable_work);
Stanislaw Gruszkae7e16b92010-09-13 14:46:41 +02001112
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08001113 del_timer_sync(&priv->statistics_periodic);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -08001114 del_timer_sync(&priv->ucode_trace);
Zhu Yib481de92007-09-25 17:54:57 -07001115}
1116
Johannes Berg03dadf92012-03-07 09:52:13 -08001117static void iwl_init_hw_rates(struct ieee80211_rate *rates)
Reinette Chatre89f186a2009-10-30 14:36:11 -07001118{
1119 int i;
1120
1121 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1122 rates[i].bitrate = iwl_rates[i].ieee * 5;
1123 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1124 rates[i].hw_value_short = i;
1125 rates[i].flags = 0;
1126 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1127 /*
1128 * If CCK != 1M then set short preamble rate flag.
1129 */
1130 rates[i].flags |=
1131 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1132 0 : IEEE80211_RATE_SHORT_PREAMBLE;
1133 }
1134 }
1135}
1136
1137static int iwl_init_drv(struct iwl_priv *priv)
1138{
1139 int ret;
1140
Johannes Bergfa23cb02012-03-05 11:24:25 -08001141 spin_lock_init(&priv->sta_lock);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001142
Johannes Bergb1eea292012-03-06 13:30:42 -08001143 mutex_init(&priv->mutex);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001144
Johannes Berge1991882012-03-06 13:30:36 -08001145 INIT_LIST_HEAD(&priv->calib_results);
Johannes Berg80e83da2011-11-25 11:11:44 -08001146
Reinette Chatre89f186a2009-10-30 14:36:11 -07001147 priv->ieee_channels = NULL;
1148 priv->ieee_rates = NULL;
1149 priv->band = IEEE80211_BAND_2GHZ;
1150
Johannes Bergab5c0f12012-03-06 13:30:53 -08001151 priv->plcp_delta_threshold =
1152 cfg(priv)->base_params->plcp_delta_threshold;
1153
Reinette Chatre89f186a2009-10-30 14:36:11 -07001154 priv->iw_mode = NL80211_IFTYPE_STATION;
Johannes Bergba37a3d2009-12-10 14:37:27 -08001155 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
Wey-Yi Guya13d2762010-01-22 14:22:42 -08001156 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
Wey-Yi Guy898ed672011-07-13 08:38:57 -07001157 priv->agg_tids_count = 0;
Reinette Chatre89f186a2009-10-30 14:36:11 -07001158
Johannes Berg947a9402012-03-06 13:30:59 -08001159 priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1160
Wey-Yi Guy8a472da2010-02-18 22:03:06 -08001161 /* initialize force reset */
1162 priv->force_reset[IWL_RF_RESET].reset_duration =
1163 IWL_DELAY_NEXT_FORCE_RF_RESET;
1164 priv->force_reset[IWL_FW_RESET].reset_duration =
1165 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
Reinette Chatre89f186a2009-10-30 14:36:11 -07001166
Stanislaw Gruszka410f2bb2011-03-04 17:51:51 +01001167 priv->rx_statistics_jiffies = jiffies;
1168
Reinette Chatre89f186a2009-10-30 14:36:11 -07001169 /* Choose which receivers/antennas to use */
Wey-Yi Guye3f10ce2011-07-01 07:59:26 -07001170 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001171
1172 iwl_init_scan_params(priv);
1173
Wey-Yi Guy22bf59a2010-08-23 07:57:11 -07001174 /* init bt coex */
Don Fry38622412011-12-16 07:07:36 -08001175 if (cfg(priv)->bt_params &&
1176 cfg(priv)->bt_params->advanced_bt_coexist) {
Wey-Yi Guyb6e116e2010-08-23 07:57:14 -07001177 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1178 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1179 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
Wey-Yi Guy22bf59a2010-08-23 07:57:11 -07001180 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1181 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1182 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
Wey-Yi Guy22bf59a2010-08-23 07:57:11 -07001183 }
1184
Reinette Chatre89f186a2009-10-30 14:36:11 -07001185 ret = iwl_init_channel_map(priv);
1186 if (ret) {
1187 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1188 goto err;
1189 }
1190
Wey-Yi Guyb39488a2011-08-25 23:10:33 -07001191 ret = iwl_init_geos(priv);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001192 if (ret) {
1193 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1194 goto err_free_channel_map;
1195 }
Johannes Berg03dadf92012-03-07 09:52:13 -08001196 iwl_init_hw_rates(priv->ieee_rates);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001197
1198 return 0;
1199
1200err_free_channel_map:
1201 iwl_free_channel_map(priv);
1202err:
1203 return ret;
1204}
1205
1206static void iwl_uninit_drv(struct iwl_priv *priv)
1207{
Wey-Yi Guyb39488a2011-08-25 23:10:33 -07001208 iwl_free_geos(priv);
Reinette Chatre89f186a2009-10-30 14:36:11 -07001209 iwl_free_channel_map(priv);
Johannes Berg811ecc92010-04-06 04:12:41 -07001210 kfree(priv->scan_cmd);
Johannes Berg4ce7cc22011-05-13 11:57:40 -07001211 kfree(priv->beacon_cmd);
Johannes Berg79d3eef2011-11-10 06:55:01 -08001212 kfree(rcu_dereference_raw(priv->noa_data));
Johannes Berge1991882012-03-06 13:30:36 -08001213 iwl_calib_free_results(priv);
Johannes Bergc8ac61c2011-07-15 13:23:45 -07001214#ifdef CONFIG_IWLWIFI_DEBUGFS
1215 kfree(priv->wowlan_sram);
1216#endif
Reinette Chatre89f186a2009-10-30 14:36:11 -07001217}
1218
Emmanuel Grumbachdda61a42011-08-25 23:11:11 -07001219/* Size of one Rx buffer in host DRAM */
1220#define IWL_RX_BUF_SIZE_4K (4 * 1024)
1221#define IWL_RX_BUF_SIZE_8K (8 * 1024)
1222
Emmanuel Grumbach6d4dec72012-02-17 10:52:03 -08001223static void iwl_set_hw_params(struct iwl_priv *priv)
Wey-Yi Guy07d4f1a2010-07-31 08:34:08 -07001224{
Johannes Bergb9ad70d2012-03-06 13:30:55 -08001225 if (cfg(priv)->ht_params)
1226 hw_params(priv).use_rts_for_aggregation =
1227 cfg(priv)->ht_params->use_rts_for_aggregation;
1228
Don Fry9d143e92011-04-20 15:23:57 -07001229 if (iwlagn_mod_params.amsdu_size_8K)
Emmanuel Grumbachd6189122011-08-25 23:10:39 -07001230 hw_params(priv).rx_page_order =
1231 get_order(IWL_RX_BUF_SIZE_8K);
Wey-Yi Guy07d4f1a2010-07-31 08:34:08 -07001232 else
Emmanuel Grumbachd6189122011-08-25 23:10:39 -07001233 hw_params(priv).rx_page_order =
1234 get_order(IWL_RX_BUF_SIZE_4K);
Wey-Yi Guy07d4f1a2010-07-31 08:34:08 -07001235
Johannes Berg74289942011-12-13 00:07:40 -08001236 if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
Johannes Berg54708d82012-03-05 11:24:31 -08001237 hw_params(priv).sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
Wey-Yi Guy07d4f1a2010-07-31 08:34:08 -07001238
Don Fry38622412011-12-16 07:07:36 -08001239 hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
Emmanuel Grumbachfd656932011-08-25 23:11:19 -07001240
Wey-Yi Guy07d4f1a2010-07-31 08:34:08 -07001241 /* Device-specific setup */
Emmanuel Grumbach6d4dec72012-02-17 10:52:03 -08001242 cfg(priv)->lib->set_hw_params(priv);
Wey-Yi Guy07d4f1a2010-07-31 08:34:08 -07001243}
1244
Wey-Yi Guy119ea182011-04-18 09:34:06 -07001245
Wey-Yi Guy119ea182011-04-18 09:34:06 -07001246
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001247static void iwl_debug_config(struct iwl_priv *priv)
1248{
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001249 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001250#ifdef CONFIG_IWLWIFI_DEBUG
1251 "enabled\n");
1252#else
1253 "disabled\n");
1254#endif
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001255 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001256#ifdef CONFIG_IWLWIFI_DEBUGFS
1257 "enabled\n");
1258#else
1259 "disabled\n");
1260#endif
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001261 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001262#ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1263 "enabled\n");
1264#else
1265 "disabled\n");
1266#endif
1267
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001268 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
Wey-Yi Guy5ef15cc2011-11-30 13:24:06 -08001269#ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001270 "enabled\n");
1271#else
1272 "disabled\n");
1273#endif
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001274 dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
Wey-Yi Guy0cb38d62011-12-02 07:33:57 -08001275#ifdef CONFIG_IWLWIFI_P2P
1276 "enabled\n");
1277#else
1278 "disabled\n");
1279#endif
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001280}
1281
Johannes Berg0692fe42012-03-06 13:30:37 -08001282static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1283 const struct iwl_fw *fw)
Wey-Yi Guyb2ea3452011-06-07 08:53:14 -07001284{
Wey-Yi Guyb2ea3452011-06-07 08:53:14 -07001285 struct iwl_priv *priv;
1286 struct ieee80211_hw *hw;
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001287 struct iwl_op_mode *op_mode;
Emmanuel Grumbach084dd7912011-05-31 09:07:00 +03001288 u16 num_mac;
Johannes Berga78be212012-02-21 18:31:06 +02001289 u32 ucode_flags;
Meenakshi Venkataraman92d743a2012-03-07 09:52:35 -08001290 struct iwl_trans_config trans_cfg;
Johannes Bergd663ee72012-03-10 13:00:07 -08001291 static const u8 no_reclaim_cmds[] = {
1292 REPLY_RX_PHY_CMD,
1293 REPLY_RX,
1294 REPLY_RX_MPDU_CMD,
1295 REPLY_COMPRESSED_BA,
1296 STATISTICS_NOTIFICATION,
1297 REPLY_TX,
1298 };
Johannes Berg9eae88f2012-03-15 13:26:52 -07001299 const u8 *q_to_ac;
1300 int n_q_to_ac;
1301 int i;
Wey-Yi Guyb2ea3452011-06-07 08:53:14 -07001302
1303 /************************
1304 * 1. Allocating HW data
1305 ************************/
Don Fryfa06ec72011-10-14 12:54:46 -07001306 hw = iwl_alloc_all();
Wey-Yi Guyb2ea3452011-06-07 08:53:14 -07001307 if (!hw) {
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001308 pr_err("%s: Cannot allocate network device\n",
1309 cfg(trans)->name);
Emmanuel Grumbach807caf22011-06-09 02:55:55 -07001310 goto out;
1311 }
1312
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001313 op_mode = hw->priv;
1314 op_mode->ops = &iwl_dvm_ops;
1315 priv = IWL_OP_MODE_GET_DVM(op_mode);
1316 priv->shrd = trans->shrd;
Johannes Berg0692fe42012-03-06 13:30:37 -08001317 priv->fw = fw;
1318 /* TODO: remove fw from shared data later */
1319 priv->shrd->fw = fw;
Emmanuel Grumbacha48709c2011-05-31 08:22:30 +03001320
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001321 /*
1322 * Populate the state variables that the transport layer needs
1323 * to know about.
1324 */
1325 trans_cfg.op_mode = op_mode;
Johannes Bergd663ee72012-03-10 13:00:07 -08001326 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1327 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
Meenakshi Venkataraman9bdfbfa2012-03-07 09:52:36 -08001328
1329 ucode_flags = fw->ucode_capa.flags;
1330
1331#ifndef CONFIG_IWLWIFI_P2P
1332 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1333#endif
Meenakshi Venkataraman92d743a2012-03-07 09:52:35 -08001334
Meenakshi Venkataramanc6f600f2012-03-08 11:29:12 -08001335 if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1336 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1337 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
Johannes Berg9eae88f2012-03-15 13:26:52 -07001338 trans_cfg.queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo;
1339 trans_cfg.n_queue_to_fifo =
1340 ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
1341 q_to_ac = iwlagn_pan_queue_to_ac;
1342 n_q_to_ac = ARRAY_SIZE(iwlagn_pan_queue_to_ac);
Meenakshi Venkataramanc6f600f2012-03-08 11:29:12 -08001343 } else {
1344 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1345 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
Johannes Berg9eae88f2012-03-15 13:26:52 -07001346 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1347 trans_cfg.n_queue_to_fifo =
1348 ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1349 q_to_ac = iwlagn_bss_queue_to_ac;
1350 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
Meenakshi Venkataramanc6f600f2012-03-08 11:29:12 -08001351 }
1352
Meenakshi Venkataraman92d743a2012-03-07 09:52:35 -08001353 /* Configure transport layer */
1354 iwl_trans_configure(trans(priv), &trans_cfg);
Emmanuel Grumbached277c92012-02-09 16:08:15 +02001355
Wey-Yi Guyb2ea3452011-06-07 08:53:14 -07001356 /* At this point both hw and priv are allocated. */
Johannes Berg8f2d3d22010-08-23 10:46:37 +02001357
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001358 SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
Zhu Yib481de92007-09-25 17:54:57 -07001359
Don Fry1589c562012-01-27 13:15:54 -08001360 /* show what debugging capabilities we have */
Wey-Yi Guyebfa8672011-11-25 11:11:47 -08001361 iwl_debug_config(priv);
1362
Tomas Winklere1623442009-01-27 14:27:56 -08001363 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
Assaf Krauss316c30d2008-03-14 10:38:46 -07001364
Wey-Yi Guybee008b2010-08-23 07:57:04 -07001365 /* is antenna coupling more than 35dB ? */
1366 priv->bt_ant_couple_ok =
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07001367 (iwlagn_mod_params.ant_coupling >
1368 IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1369 true : false;
Wey-Yi Guybee008b2010-08-23 07:57:04 -07001370
Wey-Yi Guy9f28ebc2010-11-26 13:24:19 -08001371 /* enable/disable bt channel inhibition */
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07001372 priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
Wey-Yi Guy9f28ebc2010-11-26 13:24:19 -08001373 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1374 (priv->bt_ch_announce) ? "On" : "Off");
Wey-Yi Guyf37837c2010-08-23 07:57:12 -07001375
Wey-Yi Guy20594eb2009-08-07 15:41:39 -07001376 if (iwl_alloc_traffic_mem(priv))
1377 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
Zhu Yib481de92007-09-25 17:54:57 -07001378
Reinette Chatre731a29b2009-12-14 14:12:11 -08001379 /* these spin locks will be used in apm_ops.init and EEPROM access
Mohamed Abbasa8b50a02009-05-22 11:01:47 -07001380 * we should init now
1381 */
Emmanuel Grumbach1042db22012-01-03 16:56:15 +02001382 spin_lock_init(&trans(priv)->reg_lock);
Johannes Berg4ff70fcd2012-03-05 11:24:26 -08001383 spin_lock_init(&priv->statistics.lock);
Reinette Chatre4843b5a2010-02-03 09:38:59 -08001384
Emmanuel Grumbach084dd7912011-05-31 09:07:00 +03001385 /***********************
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001386 * 2. Read REV register
Emmanuel Grumbach084dd7912011-05-31 09:07:00 +03001387 ***********************/
Shanyu Zhaoc11362c2010-03-05 17:05:20 -08001388 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
Emmanuel Grumbach08079a492012-01-09 16:23:00 +02001389 cfg(priv)->name, trans(priv)->hw_rev);
Assaf Krauss316c30d2008-03-14 10:38:46 -07001390
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001391 if (iwl_trans_start_hw(trans(priv)))
Emmanuel Grumbachb52e7ea2012-02-02 14:16:59 -08001392 goto out_free_traffic_mem;
Emmanuel Grumbach1e89cbac2011-07-20 17:51:22 -07001393
Assaf Krauss316c30d2008-03-14 10:38:46 -07001394 /*****************
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001395 * 3. Read EEPROM
Assaf Krauss316c30d2008-03-14 10:38:46 -07001396 *****************/
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001397 /* Read the EEPROM */
1398 if (iwl_eeprom_init(trans(priv), trans(priv)->hw_rev)) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08001399 IWL_ERR(priv, "Unable to init EEPROM\n");
Emmanuel Grumbachb52e7ea2012-02-02 14:16:59 -08001400 goto out_free_traffic_mem;
Assaf Krauss316c30d2008-03-14 10:38:46 -07001401 }
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001402 /* Reset chip to save power until we load uCode during "up". */
1403 iwl_trans_stop_hw(trans(priv));
1404
1405 if (iwl_eeprom_check_version(priv))
Reinette Chatrec8f16132009-02-27 16:21:22 -08001406 goto out_free_eeprom;
Tomas Winkler8614f362008-04-23 17:14:55 -07001407
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001408 if (iwl_eeprom_init_hw_params(priv))
Wey-Yi Guy21a5b3c2010-11-10 13:32:59 -08001409 goto out_free_eeprom;
1410
Ron Rindjunsky02883012008-05-15 13:53:53 +08001411 /* extract MAC Address */
Don Fryab36eab2011-11-30 15:37:32 -08001412 iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
Wey-Yi Guyc6fa17e2010-07-15 05:58:30 -07001413 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1414 priv->hw->wiphy->addresses = priv->addresses;
1415 priv->hw->wiphy->n_addresses = 1;
Don Fryab36eab2011-11-30 15:37:32 -08001416 num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
Wey-Yi Guyc6fa17e2010-07-15 05:58:30 -07001417 if (num_mac > 1) {
1418 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1419 ETH_ALEN);
1420 priv->addresses[1].addr[5]++;
1421 priv->hw->wiphy->n_addresses++;
1422 }
Assaf Krauss316c30d2008-03-14 10:38:46 -07001423
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001424 /************************
1425 * 4. Setup HW constants
1426 ************************/
1427 iwl_set_hw_params(priv);
1428
1429 if (!(hw_params(priv).sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
1430 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1431 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1432 /*
1433 * if not PAN, then don't support P2P -- might be a uCode
1434 * packaging bug or due to the eeprom check above
1435 */
1436 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1437 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1438 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
Johannes Berg9eae88f2012-03-15 13:26:52 -07001439 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1440 trans_cfg.n_queue_to_fifo =
1441 ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1442 q_to_ac = iwlagn_bss_queue_to_ac;
1443 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001444
1445 /* Configure transport layer again*/
1446 iwl_trans_configure(trans(priv), &trans_cfg);
1447 }
1448
Assaf Krauss316c30d2008-03-14 10:38:46 -07001449 /*******************
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001450 * 5. Setup priv
Assaf Krauss316c30d2008-03-14 10:38:46 -07001451 *******************/
Johannes Berg9eae88f2012-03-15 13:26:52 -07001452 for (i = 0; i < IEEE80211_NUM_ACS; i++)
1453 atomic_set(&priv->ac_stop_count[i], 0);
1454
1455 for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1456 if (i < n_q_to_ac)
1457 priv->queue_to_ac[i] = q_to_ac[i];
1458 else
1459 priv->queue_to_ac[i] = IWL_INVALID_AC;
1460 }
1461
1462 WARN_ON(trans_cfg.queue_to_fifo[trans_cfg.cmd_queue] !=
1463 IWLAGN_CMD_FIFO_NUM);
Zhu Yib481de92007-09-25 17:54:57 -07001464
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001465 if (iwl_init_drv(priv))
Ron Rindjunsky399f4902008-04-23 17:14:56 -07001466 goto out_free_eeprom;
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001467
Assaf Kraussbf85ea42008-03-14 10:38:49 -07001468 /* At this point both hw and priv are initialized. */
Assaf Krauss316c30d2008-03-14 10:38:46 -07001469
Assaf Krauss316c30d2008-03-14 10:38:46 -07001470 /********************
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001471 * 6. Setup services
Assaf Krauss316c30d2008-03-14 10:38:46 -07001472 ********************/
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08001473 iwl_setup_deferred_work(priv);
Emmanuel Grumbach653fa4a2008-06-30 17:23:11 +08001474 iwl_setup_rx_handlers(priv);
Cindy H. Kao4613e722011-05-06 10:40:15 -07001475 iwl_testmode_init(priv);
Assaf Krauss316c30d2008-03-14 10:38:46 -07001476
Emmanuel Grumbach58d0f362008-06-12 09:47:19 +08001477 iwl_power_initialize(priv);
Wey-Yi Guy39b73fb12009-07-24 11:13:02 -07001478 iwl_tt_initialize(priv);
Johannes Berg158bea02010-01-22 14:22:53 -08001479
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001480 snprintf(priv->hw->wiphy->fw_version,
1481 sizeof(priv->hw->wiphy->fw_version),
1482 "%s", fw->fw_version);
Johannes Berg562db532010-04-29 07:41:53 -07001483
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001484 priv->new_scan_threshold_behaviour =
Johannes Berga78be212012-02-21 18:31:06 +02001485 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001486
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001487 priv->phy_calib_chain_noise_reset_cmd =
1488 fw->ucode_capa.standard_phy_calibration_size;
1489 priv->phy_calib_chain_noise_gain_cmd =
1490 fw->ucode_capa.standard_phy_calibration_size + 1;
1491
1492 /* initialize all valid contexts */
Johannes Berga78be212012-02-21 18:31:06 +02001493 iwl_init_context(priv, ucode_flags);
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001494
1495 /**************************************************
1496 * This is still part of probe() in a sense...
1497 *
Emmanuel Grumbach3dc420b2012-03-07 09:52:41 -08001498 * 7. Setup and register with mac80211 and debugfs
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001499 **************************************************/
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001500 if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
Emmanuel Grumbach7d476182010-05-23 00:14:08 -07001501 goto out_destroy_workqueue;
Johannes Berg158bea02010-01-22 14:22:53 -08001502
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001503 if (iwl_dbgfs_register(priv, DRV_NAME))
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001504 IWL_ERR(priv,
Wey-Yi Guy88f10a12012-03-15 13:26:42 -07001505 "failed to create debugfs files. Ignoring error\n");
Emmanuel Grumbache211b242012-02-07 10:35:18 +02001506
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001507 return op_mode;
Zhu Yib481de92007-09-25 17:54:57 -07001508
Emmanuel Grumbach34c1b7b2011-07-04 08:58:19 +03001509out_destroy_workqueue:
Johannes Berg1ee158d2012-02-17 10:07:44 -08001510 destroy_workqueue(priv->workqueue);
1511 priv->workqueue = NULL;
Tomas Winkler6ba87952008-05-15 13:54:17 +08001512 iwl_uninit_drv(priv);
Emmanuel Grumbach34c1b7b2011-07-04 08:58:19 +03001513out_free_eeprom:
Don Fryab36eab2011-11-30 15:37:32 -08001514 iwl_eeprom_free(priv->shrd);
Emmanuel Grumbach34c1b7b2011-07-04 08:58:19 +03001515out_free_traffic_mem:
Wey-Yi Guy20594eb2009-08-07 15:41:39 -07001516 iwl_free_traffic_mem(priv);
Wey-Yi Guyd7c76f42009-10-09 13:20:17 -07001517 ieee80211_free_hw(priv->hw);
Emmanuel Grumbach34c1b7b2011-07-04 08:58:19 +03001518out:
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001519 op_mode = NULL;
1520 return op_mode;
Zhu Yib481de92007-09-25 17:54:57 -07001521}
1522
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001523static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
Zhu Yib481de92007-09-25 17:54:57 -07001524{
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02001525 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1526
Tomas Winklere1623442009-01-27 14:27:56 -08001527 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
Zhu Yib481de92007-09-25 17:54:57 -07001528
Emmanuel Grumbach67249622008-05-29 16:35:26 +08001529 iwl_dbgfs_unregister(priv);
Emmanuel Grumbach67249622008-05-29 16:35:26 +08001530
Wey-Yi Guy7a4e5282011-05-06 10:21:28 -07001531 iwl_testmode_cleanup(priv);
Don Fry09af1402011-12-09 10:07:38 -08001532 iwlagn_mac_unregister(priv);
Ron Rindjunskyc4f55232008-03-28 16:21:10 -07001533
Wey-Yi Guy39b73fb12009-07-24 11:13:02 -07001534 iwl_tt_exit(priv);
1535
Emmanuel Grumbachae2c30b2011-08-25 23:11:20 -07001536 /*This will stop the queues, move the device to low power state */
David Spinadel8f7ffbe2012-03-10 13:00:10 -08001537 priv->ucode_loaded = false;
Emmanuel Grumbachae2c30b2011-08-25 23:11:20 -07001538 iwl_trans_stop_device(trans(priv));
Mohamed Abbas0359fac2008-03-28 16:21:08 -07001539
Don Fryab36eab2011-11-30 15:37:32 -08001540 iwl_eeprom_free(priv->shrd);
Zhu Yib481de92007-09-25 17:54:57 -07001541
Mohamed Abbas948c1712007-10-25 17:15:45 +08001542 /*netif_stop_queue(dev); */
Johannes Berg1ee158d2012-02-17 10:07:44 -08001543 flush_workqueue(priv->workqueue);
Mohamed Abbas948c1712007-10-25 17:15:45 +08001544
Wey-Yi Guyade4c642011-10-10 07:27:11 -07001545 /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
Johannes Berg1ee158d2012-02-17 10:07:44 -08001546 * priv->workqueue... so we can't take down the workqueue
Zhu Yib481de92007-09-25 17:54:57 -07001547 * until now... */
Johannes Berg1ee158d2012-02-17 10:07:44 -08001548 destroy_workqueue(priv->workqueue);
1549 priv->workqueue = NULL;
Wey-Yi Guy20594eb2009-08-07 15:41:39 -07001550 iwl_free_traffic_mem(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001551
Tomas Winkler6ba87952008-05-15 13:54:17 +08001552 iwl_uninit_drv(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001553
Johannes Berg77834542010-10-04 05:50:36 -07001554 dev_kfree_skb(priv->beacon_skb);
Zhu Yib481de92007-09-25 17:54:57 -07001555
1556 ieee80211_free_hw(priv->hw);
1557}
1558
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001559static const char * const desc_lookup_text[] = {
1560 "OK",
1561 "FAIL",
1562 "BAD_PARAM",
1563 "BAD_CHECKSUM",
1564 "NMI_INTERRUPT_WDG",
1565 "SYSASSERT",
1566 "FATAL_ERROR",
1567 "BAD_COMMAND",
1568 "HW_ERROR_TUNE_LOCK",
1569 "HW_ERROR_TEMPERATURE",
1570 "ILLEGAL_CHAN_FREQ",
1571 "VCC_NOT_STABLE",
1572 "FH_ERROR",
1573 "NMI_INTERRUPT_HOST",
1574 "NMI_INTERRUPT_ACTION_PT",
1575 "NMI_INTERRUPT_UNKNOWN",
1576 "UCODE_VERSION_MISMATCH",
1577 "HW_ERROR_ABS_LOCK",
1578 "HW_ERROR_CAL_LOCK_FAIL",
1579 "NMI_INTERRUPT_INST_ACTION_PT",
1580 "NMI_INTERRUPT_DATA_ACTION_PT",
1581 "NMI_TRM_HW_ER",
1582 "NMI_INTERRUPT_TRM",
1583 "NMI_INTERRUPT_BREAK_POINT",
1584 "DEBUG_0",
1585 "DEBUG_1",
1586 "DEBUG_2",
1587 "DEBUG_3",
1588};
1589
1590static struct { char *name; u8 num; } advanced_lookup[] = {
1591 { "NMI_INTERRUPT_WDG", 0x34 },
1592 { "SYSASSERT", 0x35 },
1593 { "UCODE_VERSION_MISMATCH", 0x37 },
1594 { "BAD_COMMAND", 0x38 },
1595 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1596 { "FATAL_ERROR", 0x3D },
1597 { "NMI_TRM_HW_ERR", 0x46 },
1598 { "NMI_INTERRUPT_TRM", 0x4C },
1599 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1600 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1601 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1602 { "NMI_INTERRUPT_HOST", 0x66 },
1603 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1604 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1605 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1606 { "ADVANCED_SYSASSERT", 0 },
1607};
1608
1609static const char *desc_lookup(u32 num)
1610{
1611 int i;
1612 int max = ARRAY_SIZE(desc_lookup_text);
1613
1614 if (num < max)
1615 return desc_lookup_text[num];
1616
1617 max = ARRAY_SIZE(advanced_lookup) - 1;
1618 for (i = 0; i < max; i++) {
1619 if (advanced_lookup[i].num == num)
1620 break;
1621 }
1622 return advanced_lookup[i].name;
1623}
1624
1625#define ERROR_START_OFFSET (1 * sizeof(u32))
1626#define ERROR_ELEM_SIZE (7 * sizeof(u32))
1627
1628static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1629{
1630 struct iwl_trans *trans = trans(priv);
1631 u32 base;
1632 struct iwl_error_event_table table;
1633
1634 base = priv->device_pointers.error_event_table;
Meenakshi Venkataramana42506e2012-03-15 13:26:57 -07001635 if (priv->cur_ucode == IWL_UCODE_INIT) {
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001636 if (!base)
1637 base = priv->shrd->fw->init_errlog_ptr;
1638 } else {
1639 if (!base)
1640 base = priv->shrd->fw->inst_errlog_ptr;
1641 }
1642
1643 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1644 IWL_ERR(priv,
1645 "Not valid error log pointer 0x%08X for %s uCode\n",
1646 base,
Meenakshi Venkataramana42506e2012-03-15 13:26:57 -07001647 (priv->cur_ucode == IWL_UCODE_INIT)
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001648 ? "Init" : "RT");
1649 return;
1650 }
1651
1652 /*TODO: Update dbgfs with ISR error stats obtained below */
1653 iwl_read_targ_mem_words(trans, base, &table, sizeof(table));
1654
1655 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1656 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1657 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1658 priv->shrd->status, table.valid);
1659 }
1660
1661 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1662 table.data1, table.data2, table.line,
1663 table.blink1, table.blink2, table.ilink1,
1664 table.ilink2, table.bcon_time, table.gp1,
1665 table.gp2, table.gp3, table.ucode_ver,
1666 table.hw_ver, table.brd_ver);
1667 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1668 desc_lookup(table.error_id));
1669 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1670 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1671 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1672 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1673 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1674 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1675 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1676 IWL_ERR(priv, "0x%08X | line\n", table.line);
1677 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1678 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1679 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1680 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1681 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1682 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1683 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1684 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1685 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1686 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1687 IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1688 IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1689 IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1690 IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1691 IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1692 IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1693 IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1694 IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1695 IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1696 IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1697 IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1698 IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1699 IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1700 IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1701}
1702
1703#define EVENT_START_OFFSET (4 * sizeof(u32))
1704
1705/**
1706 * iwl_print_event_log - Dump error event log to syslog
1707 *
1708 */
1709static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1710 u32 num_events, u32 mode,
1711 int pos, char **buf, size_t bufsz)
1712{
1713 u32 i;
1714 u32 base; /* SRAM byte address of event log header */
1715 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1716 u32 ptr; /* SRAM byte address of log data */
1717 u32 ev, time, data; /* event log data */
1718 unsigned long reg_flags;
1719
1720 struct iwl_trans *trans = trans(priv);
1721
1722 if (num_events == 0)
1723 return pos;
1724
1725 base = priv->device_pointers.log_event_table;
Meenakshi Venkataramana42506e2012-03-15 13:26:57 -07001726 if (priv->cur_ucode == IWL_UCODE_INIT) {
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001727 if (!base)
1728 base = priv->shrd->fw->init_evtlog_ptr;
1729 } else {
1730 if (!base)
1731 base = priv->shrd->fw->inst_evtlog_ptr;
1732 }
1733
1734 if (mode == 0)
1735 event_size = 2 * sizeof(u32);
1736 else
1737 event_size = 3 * sizeof(u32);
1738
1739 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1740
1741 /* Make sure device is powered up for SRAM reads */
1742 spin_lock_irqsave(&trans->reg_lock, reg_flags);
1743 if (unlikely(!iwl_grab_nic_access(trans)))
1744 goto out_unlock;
1745
1746 /* Set starting address; reads will auto-increment */
1747 iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1748
1749 /* "time" is actually "data" for mode 0 (no timestamp).
1750 * place event id # at far right for easier visual parsing. */
1751 for (i = 0; i < num_events; i++) {
1752 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1753 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1754 if (mode == 0) {
1755 /* data, ev */
1756 if (bufsz) {
1757 pos += scnprintf(*buf + pos, bufsz - pos,
1758 "EVT_LOG:0x%08x:%04u\n",
1759 time, ev);
1760 } else {
1761 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1762 time, ev);
1763 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1764 time, ev);
1765 }
1766 } else {
1767 data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1768 if (bufsz) {
1769 pos += scnprintf(*buf + pos, bufsz - pos,
1770 "EVT_LOGT:%010u:0x%08x:%04u\n",
1771 time, data, ev);
1772 } else {
1773 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1774 time, data, ev);
1775 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1776 data, ev);
1777 }
1778 }
1779 }
1780
1781 /* Allow device to power down */
1782 iwl_release_nic_access(trans);
1783out_unlock:
1784 spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
1785 return pos;
1786}
1787
1788/**
1789 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1790 */
1791static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1792 u32 num_wraps, u32 next_entry,
1793 u32 size, u32 mode,
1794 int pos, char **buf, size_t bufsz)
1795{
1796 /*
1797 * display the newest DEFAULT_LOG_ENTRIES entries
1798 * i.e the entries just before the next ont that uCode would fill.
1799 */
1800 if (num_wraps) {
1801 if (next_entry < size) {
1802 pos = iwl_print_event_log(priv,
1803 capacity - (size - next_entry),
1804 size - next_entry, mode,
1805 pos, buf, bufsz);
1806 pos = iwl_print_event_log(priv, 0,
1807 next_entry, mode,
1808 pos, buf, bufsz);
1809 } else
1810 pos = iwl_print_event_log(priv, next_entry - size,
1811 size, mode, pos, buf, bufsz);
1812 } else {
1813 if (next_entry < size) {
1814 pos = iwl_print_event_log(priv, 0, next_entry,
1815 mode, pos, buf, bufsz);
1816 } else {
1817 pos = iwl_print_event_log(priv, next_entry - size,
1818 size, mode, pos, buf, bufsz);
1819 }
1820 }
1821 return pos;
1822}
1823
1824#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1825
1826int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1827 char **buf, bool display)
1828{
1829 u32 base; /* SRAM byte address of event log header */
1830 u32 capacity; /* event log capacity in # entries */
1831 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1832 u32 num_wraps; /* # times uCode wrapped to top of log */
1833 u32 next_entry; /* index of next entry to be written by uCode */
1834 u32 size; /* # entries that we'll print */
1835 u32 logsize;
1836 int pos = 0;
1837 size_t bufsz = 0;
1838 struct iwl_trans *trans = trans(priv);
1839
1840 base = priv->device_pointers.log_event_table;
Meenakshi Venkataramana42506e2012-03-15 13:26:57 -07001841 if (priv->cur_ucode == IWL_UCODE_INIT) {
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001842 logsize = priv->shrd->fw->init_evtlog_size;
1843 if (!base)
1844 base = priv->shrd->fw->init_evtlog_ptr;
1845 } else {
1846 logsize = priv->shrd->fw->inst_evtlog_size;
1847 if (!base)
1848 base = priv->shrd->fw->inst_evtlog_ptr;
1849 }
1850
1851 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1852 IWL_ERR(priv,
1853 "Invalid event log pointer 0x%08X for %s uCode\n",
1854 base,
Meenakshi Venkataramana42506e2012-03-15 13:26:57 -07001855 (priv->cur_ucode == IWL_UCODE_INIT)
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001856 ? "Init" : "RT");
1857 return -EINVAL;
1858 }
1859
1860 /* event log header */
1861 capacity = iwl_read_targ_mem(trans, base);
1862 mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32)));
1863 num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32)));
1864 next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32)));
1865
1866 if (capacity > logsize) {
1867 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1868 "entries\n", capacity, logsize);
1869 capacity = logsize;
1870 }
1871
1872 if (next_entry > logsize) {
1873 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1874 next_entry, logsize);
1875 next_entry = logsize;
1876 }
1877
1878 size = num_wraps ? capacity : next_entry;
1879
1880 /* bail out if nothing in log */
1881 if (size == 0) {
1882 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1883 return pos;
1884 }
1885
1886#ifdef CONFIG_IWLWIFI_DEBUG
1887 if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1888 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1889 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1890#else
1891 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1892 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1893#endif
1894 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1895 size);
1896
1897#ifdef CONFIG_IWLWIFI_DEBUG
1898 if (display) {
1899 if (full_log)
1900 bufsz = capacity * 48;
1901 else
1902 bufsz = size * 48;
1903 *buf = kmalloc(bufsz, GFP_KERNEL);
1904 if (!*buf)
1905 return -ENOMEM;
1906 }
1907 if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1908 /*
1909 * if uCode has wrapped back to top of log,
1910 * start at the oldest entry,
1911 * i.e the next one that uCode would fill.
1912 */
1913 if (num_wraps)
1914 pos = iwl_print_event_log(priv, next_entry,
1915 capacity - next_entry, mode,
1916 pos, buf, bufsz);
1917 /* (then/else) start at top of log */
1918 pos = iwl_print_event_log(priv, 0,
1919 next_entry, mode, pos, buf, bufsz);
1920 } else
1921 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1922 next_entry, size, mode,
1923 pos, buf, bufsz);
1924#else
1925 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1926 next_entry, size, mode,
1927 pos, buf, bufsz);
1928#endif
1929 return pos;
1930}
1931
Meenakshi Venkataraman19469f42012-03-15 13:26:55 -07001932static void iwl_nic_error(struct iwl_op_mode *op_mode)
1933{
1934 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1935
Meenakshi Venkataraman2fdfc472012-03-15 13:26:56 -07001936 IWL_ERR(priv, "Loaded firmware version: %s\n",
1937 priv->shrd->fw->fw_version);
1938
1939 iwl_dump_nic_error_log(priv);
1940 iwl_dump_nic_event_log(priv, false, NULL, false);
1941
Meenakshi Venkataraman19469f42012-03-15 13:26:55 -07001942 iwlagn_fw_error(priv, false);
1943}
1944
Johannes Berg0e781842012-03-06 13:30:49 -08001945static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1946{
1947 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1948
1949 if (!iwl_check_for_ct_kill(priv)) {
1950 IWL_ERR(priv, "Restarting adapter queue is full\n");
Meenakshi Venkataramanb7e21bf2012-03-15 13:26:54 -07001951 iwlagn_fw_error(priv, false);
Johannes Berg0e781842012-03-06 13:30:49 -08001952 }
1953}
1954
Johannes Bergecdb9752012-03-06 13:31:03 -08001955static void iwl_nic_config(struct iwl_op_mode *op_mode)
1956{
1957 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1958
1959 cfg(priv)->lib->nic_config(priv);
1960}
1961
Johannes Berg9eae88f2012-03-15 13:26:52 -07001962static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
Johannes Berge755f882012-03-07 09:52:16 -08001963{
1964 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
Johannes Berg9eae88f2012-03-15 13:26:52 -07001965 int ac = priv->queue_to_ac[queue];
1966
1967 if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
1968 return;
1969
1970 if (atomic_inc_return(&priv->ac_stop_count[ac]) > 1) {
1971 IWL_DEBUG_TX_QUEUES(priv,
1972 "queue %d (AC %d) already stopped\n",
1973 queue, ac);
1974 return;
1975 }
Johannes Berge755f882012-03-07 09:52:16 -08001976
1977 set_bit(ac, &priv->transport_queue_stop);
1978 ieee80211_stop_queue(priv->hw, ac);
1979}
1980
Johannes Berg9eae88f2012-03-15 13:26:52 -07001981static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
Johannes Berge755f882012-03-07 09:52:16 -08001982{
1983 struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
Johannes Berg9eae88f2012-03-15 13:26:52 -07001984 int ac = priv->queue_to_ac[queue];
1985
1986 if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
1987 return;
1988
1989 if (atomic_dec_return(&priv->ac_stop_count[ac]) > 0) {
1990 IWL_DEBUG_TX_QUEUES(priv,
1991 "queue %d (AC %d) already awake\n",
1992 queue, ac);
1993 return;
1994 }
Johannes Berge755f882012-03-07 09:52:16 -08001995
1996 clear_bit(ac, &priv->transport_queue_stop);
1997
1998 if (!priv->passive_no_rx)
1999 ieee80211_wake_queue(priv->hw, ac);
2000}
2001
2002void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2003{
2004 int ac;
2005
2006 if (!priv->passive_no_rx)
2007 return;
2008
2009 for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) {
Emmanuel Grumbach32517152012-03-07 09:52:34 -08002010 if (!test_bit(ac, &priv->transport_queue_stop)) {
2011 IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d");
Johannes Berge755f882012-03-07 09:52:16 -08002012 ieee80211_wake_queue(priv->hw, ac);
Emmanuel Grumbach32517152012-03-07 09:52:34 -08002013 } else {
2014 IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d");
2015 }
Johannes Berge755f882012-03-07 09:52:16 -08002016 }
2017
2018 priv->passive_no_rx = false;
2019}
2020
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02002021const struct iwl_op_mode_ops iwl_dvm_ops = {
2022 .start = iwl_op_mode_dvm_start,
2023 .stop = iwl_op_mode_dvm_stop,
Emmanuel Grumbachdb70f292012-02-09 16:08:15 +02002024 .rx = iwl_rx_dispatch,
Emmanuel Grumbach02e38352012-02-09 16:08:15 +02002025 .queue_full = iwl_stop_sw_queue,
2026 .queue_not_full = iwl_wake_sw_queue,
Emmanuel Grumbach7120d982012-02-09 16:08:15 +02002027 .hw_rf_kill = iwl_set_hw_rfkill_state,
Emmanuel Grumbached277c92012-02-09 16:08:15 +02002028 .free_skb = iwl_free_skb,
Emmanuel Grumbachbcb93212012-02-09 16:08:15 +02002029 .nic_error = iwl_nic_error,
Johannes Berg0e781842012-03-06 13:30:49 -08002030 .cmd_queue_full = iwl_cmd_queue_full,
Johannes Bergecdb9752012-03-06 13:31:03 -08002031 .nic_config = iwl_nic_config,
Emmanuel Grumbachd0f76d62012-02-09 16:08:15 +02002032};
Zhu Yib481de92007-09-25 17:54:57 -07002033
2034/*****************************************************************************
2035 *
2036 * driver and module entry point
2037 *
2038 *****************************************************************************/
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002039
2040struct kmem_cache *iwl_tx_cmd_pool;
2041
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002042static int __init iwl_init(void)
Zhu Yib481de92007-09-25 17:54:57 -07002043{
2044
2045 int ret;
Joe Perchesc96c31e2010-07-26 14:39:58 -07002046 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
2047 pr_info(DRV_COPYRIGHT "\n");
Reinette Chatre897e1cf2008-03-28 16:21:09 -07002048
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002049 iwl_tx_cmd_pool = kmem_cache_create("iwl_dev_cmd",
2050 sizeof(struct iwl_device_cmd),
2051 sizeof(void *), 0, NULL);
2052 if (!iwl_tx_cmd_pool)
2053 return -ENOMEM;
2054
Tomas Winklere227cea2008-07-18 13:53:05 +08002055 ret = iwlagn_rate_control_register();
Reinette Chatre897e1cf2008-03-28 16:21:09 -07002056 if (ret) {
Joe Perchesc96c31e2010-07-26 14:39:58 -07002057 pr_err("Unable to register rate control algorithm: %d\n", ret);
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002058 goto error_rc_register;
Reinette Chatre897e1cf2008-03-28 16:21:09 -07002059 }
2060
Emmanuel Grumbach48d1a212011-05-24 11:39:02 +03002061 ret = iwl_pci_register_driver();
Emmanuel Grumbach48d1a212011-05-24 11:39:02 +03002062 if (ret)
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002063 goto error_pci_register;
Zhu Yib481de92007-09-25 17:54:57 -07002064 return ret;
Reinette Chatre897e1cf2008-03-28 16:21:09 -07002065
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002066error_pci_register:
Tomas Winklere227cea2008-07-18 13:53:05 +08002067 iwlagn_rate_control_unregister();
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002068error_rc_register:
2069 kmem_cache_destroy(iwl_tx_cmd_pool);
Reinette Chatre897e1cf2008-03-28 16:21:09 -07002070 return ret;
Zhu Yib481de92007-09-25 17:54:57 -07002071}
2072
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002073static void __exit iwl_exit(void)
Zhu Yib481de92007-09-25 17:54:57 -07002074{
Emmanuel Grumbach48d1a212011-05-24 11:39:02 +03002075 iwl_pci_unregister_driver();
Tomas Winklere227cea2008-07-18 13:53:05 +08002076 iwlagn_rate_control_unregister();
Stanislaw Gruszka354928dd2012-03-07 09:52:33 -08002077 kmem_cache_destroy(iwl_tx_cmd_pool);
Zhu Yib481de92007-09-25 17:54:57 -07002078}
2079
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002080module_exit(iwl_exit);
2081module_init(iwl_init);
Reinette Chatrea562a9d2009-07-17 09:30:24 -07002082
2083#ifdef CONFIG_IWLWIFI_DEBUG
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07002084module_param_named(debug, iwlagn_mod_params.debug_level, uint,
2085 S_IRUGO | S_IWUSR);
Reinette Chatrea562a9d2009-07-17 09:30:24 -07002086MODULE_PARM_DESC(debug, "debug output mask");
2087#endif
2088
Wey-Yi Guy2b068612010-03-22 09:17:39 -07002089module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
2090MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
Johannes Berg74289942011-12-13 00:07:40 -08002091module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
2092MODULE_PARM_DESC(11n_disable,
2093 "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
Wey-Yi Guy2b068612010-03-22 09:17:39 -07002094module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
2095 int, S_IRUGO);
2096MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
Wey-Yi Guy2b068612010-03-22 09:17:39 -07002097module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
2098MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
Johannes Bergdd7a2502010-04-28 23:33:10 -07002099
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07002100module_param_named(ucode_alternative,
2101 iwlagn_mod_params.wanted_ucode_alternative,
2102 int, S_IRUGO);
Johannes Bergdd7a2502010-04-28 23:33:10 -07002103MODULE_PARM_DESC(ucode_alternative,
2104 "specify ucode alternative to use from ucode file");
Wey-Yi Guybee008b2010-08-23 07:57:04 -07002105
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07002106module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
2107 int, S_IRUGO);
Wey-Yi Guybee008b2010-08-23 07:57:04 -07002108MODULE_PARM_DESC(antenna_coupling,
2109 "specify antenna coupling in dB (defualt: 0 dB)");
Wey-Yi Guyf37837c2010-08-23 07:57:12 -07002110
Emmanuel Grumbach48f20d32011-08-25 23:10:36 -07002111module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
2112 bool, S_IRUGO);
Wey-Yi Guy9f28ebc2010-11-26 13:24:19 -08002113MODULE_PARM_DESC(bt_ch_inhibition,
Wey-Yi Guyfee84f0d2011-08-25 23:10:57 -07002114 "Enable BT channel inhibition (default: enable)");
Stanislaw Gruszkab7977ff2011-02-28 14:33:15 +01002115
2116module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
2117MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
2118
2119module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
2120MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
Wey-Yi Guyb60eec92011-06-03 13:52:38 -07002121
Wey-Yi Guy9995ffe2011-12-02 08:19:19 -08002122module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
Wey-Yi Guy300d0832011-06-25 09:17:41 -07002123MODULE_PARM_DESC(wd_disable,
Wey-Yi Guy9995ffe2011-12-02 08:19:19 -08002124 "Disable stuck queue watchdog timer 0=system default, "
2125 "1=disable, 2=enable (default: 0)");
Wey-Yi Guy300d0832011-06-25 09:17:41 -07002126
Wey-Yi Guyb60eec92011-06-03 13:52:38 -07002127/*
2128 * set bt_coex_active to true, uCode will do kill/defer
2129 * every time the priority line is asserted (BT is sending signals on the
2130 * priority line in the PCIx).
2131 * set bt_coex_active to false, uCode will ignore the BT activity and
2132 * perform the normal operation
2133 *
2134 * User might experience transmit issue on some platform due to WiFi/BT
2135 * co-exist problem. The possible behaviors are:
2136 * Able to scan and finding all the available AP
2137 * Not able to associate with any AP
2138 * On those platforms, WiFi communication can be restored by set
2139 * "bt_coex_active" module parameter to "false"
2140 *
2141 * default: bt_coex_active = true (BT_COEX_ENABLE)
2142 */
2143module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
2144 bool, S_IRUGO);
2145MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
Wey-Yi Guy6b0184c2011-06-03 13:52:39 -07002146
2147module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
2148MODULE_PARM_DESC(led_mode, "0=system default, "
Wey-Yi Guy42602dd42012-01-19 12:16:46 -08002149 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
Wey-Yi Guy3f1e5f42011-06-03 13:52:40 -07002150
Wey-Yi Guy0172b022011-06-11 10:00:05 -07002151module_param_named(power_save, iwlagn_mod_params.power_save,
2152 bool, S_IRUGO);
2153MODULE_PARM_DESC(power_save,
2154 "enable WiFi power management (default: disable)");
2155
Wey-Yi Guyf7538162011-06-11 10:00:06 -07002156module_param_named(power_level, iwlagn_mod_params.power_level,
2157 int, S_IRUGO);
2158MODULE_PARM_DESC(power_level,
2159 "default power save level (range from 1 - 5, default: 1)");
2160
Wey-Yi Guydd5b6d02011-08-25 23:10:55 -07002161module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
2162 bool, S_IRUGO);
2163MODULE_PARM_DESC(auto_agg,
2164 "enable agg w/o check traffic load (default: enable)");
2165
Wey-Yi Guy3f1e5f42011-06-03 13:52:40 -07002166/*
2167 * For now, keep using power level 1 instead of automatically
2168 * adjusting ...
2169 */
2170module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
2171 bool, S_IRUGO);
2172MODULE_PARM_DESC(no_sleep_autoadjust,
2173 "don't automatically adjust sleep level "
2174 "according to maximum network latency (default: true)");