blob: 9240abf425c7a38da533b69e86caf0d1a29cbd2a [file] [log] [blame]
Zhu Yib481de92007-09-25 17:54:57 -07001/******************************************************************************
2 *
Reinette Chatre1f447802010-01-15 13:43:41 -08003 * Copyright(c) 2003 - 2010 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 *****************************************************************************/
29
Joe Perchesc96c31e2010-07-26 14:39:58 -070030#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
Zhu Yib481de92007-09-25 17:54:57 -070032#include <linux/kernel.h>
33#include <linux/module.h>
Zhu Yib481de92007-09-25 17:54:57 -070034#include <linux/init.h>
35#include <linux/pci.h>
John W. Linville1a7123c2010-08-05 14:39:31 -040036#include <linux/pci-aspm.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090037#include <linux/slab.h>
Zhu Yib481de92007-09-25 17:54:57 -070038#include <linux/dma-mapping.h>
39#include <linux/delay.h>
Alexey Dobriyand43c36d2009-10-07 17:09:06 +040040#include <linux/sched.h>
Zhu Yib481de92007-09-25 17:54:57 -070041#include <linux/skbuff.h>
42#include <linux/netdevice.h>
43#include <linux/wireless.h>
44#include <linux/firmware.h>
Zhu Yib481de92007-09-25 17:54:57 -070045#include <linux/etherdevice.h>
46#include <linux/if_arp.h>
47
Zhu Yib481de92007-09-25 17:54:57 -070048#include <net/mac80211.h>
49
50#include <asm/div64.h>
51
Samuel Ortiza3139c52008-12-19 10:37:09 +080052#define DRV_NAME "iwlagn"
53
Assaf Krauss6bc913b2008-03-11 16:17:18 -070054#include "iwl-eeprom.h"
Tomas Winkler3e0d4cb2008-04-24 11:55:38 -070055#include "iwl-dev.h"
Tomas Winklerfee12472008-04-03 16:05:21 -070056#include "iwl-core.h"
Tomas Winkler3395f6e2008-03-25 16:33:37 -070057#include "iwl-io.h"
Zhu Yib481de92007-09-25 17:54:57 -070058#include "iwl-helpers.h"
Emmanuel Grumbach6974e362008-04-14 21:16:06 -070059#include "iwl-sta.h"
Johannes Berg0de76732010-09-22 18:02:11 +020060#include "iwl-agn-calib.h"
Johannes Berga1175122010-01-21 06:21:10 -080061#include "iwl-agn.h"
Wey-Yi Guy5ed540a2011-01-21 15:26:39 -080062#include "iwl-agn-led.h"
Zhu Yib481de92007-09-25 17:54:57 -070063
Christoph Hellwig416e1432007-10-25 17:15:49 +080064
Zhu Yib481de92007-09-25 17:54:57 -070065/******************************************************************************
66 *
67 * module boiler plate
68 *
69 ******************************************************************************/
70
Zhu Yib481de92007-09-25 17:54:57 -070071/*
72 * module name, copyright, version, etc.
Zhu Yib481de92007-09-25 17:54:57 -070073 */
Tomas Winklerd783b062008-07-18 13:53:02 +080074#define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
Zhu Yib481de92007-09-25 17:54:57 -070075
Tomas Winkler0a6857e2008-03-12 16:58:49 -070076#ifdef CONFIG_IWLWIFI_DEBUG
Zhu Yib481de92007-09-25 17:54:57 -070077#define VD "d"
78#else
79#define VD
80#endif
81
Reinette Chatre81963d62010-01-22 14:22:57 -080082#define DRV_VERSION IWLWIFI_VERSION VD
Zhu Yib481de92007-09-25 17:54:57 -070083
Zhu Yib481de92007-09-25 17:54:57 -070084
85MODULE_DESCRIPTION(DRV_DESCRIPTION);
86MODULE_VERSION(DRV_VERSION);
Tomas Winklera7b75202008-12-11 10:33:41 -080087MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
Zhu Yib481de92007-09-25 17:54:57 -070088MODULE_LICENSE("GPL");
Tomas Winkler4fc22b22008-07-21 18:54:42 +030089MODULE_ALIAS("iwl4965");
Zhu Yib481de92007-09-25 17:54:57 -070090
Wey-Yi Guybee008b2010-08-23 07:57:04 -070091static int iwlagn_ant_coupling;
Wey-Yi Guyf37837c2010-08-23 07:57:12 -070092static bool iwlagn_bt_ch_announce = 1;
Wey-Yi Guybee008b2010-08-23 07:57:04 -070093
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -070094void iwl_update_chain_flags(struct iwl_priv *priv)
Mohamed Abbas5da4b552008-04-21 15:41:51 -070095{
Johannes Berg246ed352010-08-23 10:46:32 +020096 struct iwl_rxon_context *ctx;
Mohamed Abbas5da4b552008-04-21 15:41:51 -070097
Johannes Berg246ed352010-08-23 10:46:32 +020098 if (priv->cfg->ops->hcmd->set_rxon_chain) {
99 for_each_context(priv, ctx) {
100 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
Shanyu Zhao6163a372010-11-12 13:48:13 -0800101 if (ctx->active.rx_chain != ctx->staging.rx_chain)
102 iwlcore_commit_rxon(priv, ctx);
Johannes Berg246ed352010-08-23 10:46:32 +0200103 }
104 }
Mohamed Abbas5da4b552008-04-21 15:41:51 -0700105}
106
Tomas Winklerfcab4232008-05-15 13:54:01 +0800107static void iwl_clear_free_frames(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700108{
109 struct list_head *element;
110
Tomas Winklere1623442009-01-27 14:27:56 -0800111 IWL_DEBUG_INFO(priv, "%d frames on pre-allocated heap on clear.\n",
Zhu Yib481de92007-09-25 17:54:57 -0700112 priv->frames_count);
113
114 while (!list_empty(&priv->free_frames)) {
115 element = priv->free_frames.next;
116 list_del(element);
Tomas Winklerfcab4232008-05-15 13:54:01 +0800117 kfree(list_entry(element, struct iwl_frame, list));
Zhu Yib481de92007-09-25 17:54:57 -0700118 priv->frames_count--;
119 }
120
121 if (priv->frames_count) {
Winkler, Tomas39aadf82008-12-19 10:37:32 +0800122 IWL_WARN(priv, "%d frames still in use. Did we lose one?\n",
Zhu Yib481de92007-09-25 17:54:57 -0700123 priv->frames_count);
124 priv->frames_count = 0;
125 }
126}
127
Tomas Winklerfcab4232008-05-15 13:54:01 +0800128static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700129{
Tomas Winklerfcab4232008-05-15 13:54:01 +0800130 struct iwl_frame *frame;
Zhu Yib481de92007-09-25 17:54:57 -0700131 struct list_head *element;
132 if (list_empty(&priv->free_frames)) {
133 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
134 if (!frame) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800135 IWL_ERR(priv, "Could not allocate frame!\n");
Zhu Yib481de92007-09-25 17:54:57 -0700136 return NULL;
137 }
138
139 priv->frames_count++;
140 return frame;
141 }
142
143 element = priv->free_frames.next;
144 list_del(element);
Tomas Winklerfcab4232008-05-15 13:54:01 +0800145 return list_entry(element, struct iwl_frame, list);
Zhu Yib481de92007-09-25 17:54:57 -0700146}
147
Tomas Winklerfcab4232008-05-15 13:54:01 +0800148static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
Zhu Yib481de92007-09-25 17:54:57 -0700149{
150 memset(frame, 0, sizeof(*frame));
151 list_add(&frame->list, &priv->free_frames);
152}
153
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800154static u32 iwl_fill_beacon_frame(struct iwl_priv *priv,
Johannes Berg77834542010-10-04 05:50:36 -0700155 struct ieee80211_hdr *hdr,
156 int left)
Zhu Yib481de92007-09-25 17:54:57 -0700157{
Johannes Berg77834542010-10-04 05:50:36 -0700158 lockdep_assert_held(&priv->mutex);
159
Johannes Berg12e934d2010-10-04 05:50:06 -0700160 if (!priv->beacon_skb)
Zhu Yib481de92007-09-25 17:54:57 -0700161 return 0;
162
Johannes Berg12e934d2010-10-04 05:50:06 -0700163 if (priv->beacon_skb->len > left)
Zhu Yib481de92007-09-25 17:54:57 -0700164 return 0;
165
Johannes Berg12e934d2010-10-04 05:50:06 -0700166 memcpy(hdr, priv->beacon_skb->data, priv->beacon_skb->len);
Zhu Yib481de92007-09-25 17:54:57 -0700167
Johannes Berg12e934d2010-10-04 05:50:06 -0700168 return priv->beacon_skb->len;
Zhu Yib481de92007-09-25 17:54:57 -0700169}
170
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800171/* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
172static void iwl_set_beacon_tim(struct iwl_priv *priv,
Johannes Berg77834542010-10-04 05:50:36 -0700173 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
174 u8 *beacon, u32 frame_size)
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800175{
176 u16 tim_idx;
177 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
178
179 /*
180 * The index is relative to frame start but we start looking at the
181 * variable-length part of the beacon.
182 */
183 tim_idx = mgmt->u.beacon.variable - beacon;
184
185 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
186 while ((tim_idx < (frame_size - 2)) &&
187 (beacon[tim_idx] != WLAN_EID_TIM))
188 tim_idx += beacon[tim_idx+1] + 2;
189
190 /* If TIM field was found, set variables */
191 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
192 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
193 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
194 } else
195 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
196}
197
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700198static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800199 struct iwl_frame *frame)
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800200{
201 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800202 u32 frame_size;
203 u32 rate_flags;
204 u32 rate;
205 /*
206 * We have to set up the TX command, the TX Beacon command, and the
207 * beacon contents.
208 */
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800209
Johannes Berg76d04812010-08-23 10:46:47 +0200210 lockdep_assert_held(&priv->mutex);
211
212 if (!priv->beacon_ctx) {
213 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
Julia Lawall950094c2010-09-05 21:00:26 +0200214 return 0;
Johannes Berg76d04812010-08-23 10:46:47 +0200215 }
216
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800217 /* Initialize memory */
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800218 tx_beacon_cmd = &frame->u.beacon;
219 memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
220
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800221 /* Set up TX beacon contents */
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800222 frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800223 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800224 if (WARN_ON_ONCE(frame_size > MAX_MPDU_SIZE))
225 return 0;
Johannes Berg40bbfd42010-10-07 04:00:33 -0700226 if (!frame_size)
227 return 0;
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800228
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800229 /* Set up TX command fields */
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800230 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
Johannes Berg76d04812010-08-23 10:46:47 +0200231 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800232 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800233 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800234 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
235
236 /* Set up TX beacon command fields */
237 iwl_set_beacon_tim(priv, tx_beacon_cmd, (u8 *)tx_beacon_cmd->frame,
Johannes Berg77834542010-10-04 05:50:36 -0700238 frame_size);
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800239
240 /* Set up packet rate and flags */
Johannes Berg76d04812010-08-23 10:46:47 +0200241 rate = iwl_rate_get_lowest_plcp(priv, priv->beacon_ctx);
Johannes Berg0e1654f2010-05-18 02:48:36 -0700242 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
243 priv->hw_params.valid_tx_ant);
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800244 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
245 if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
246 rate_flags |= RATE_MCS_CCK_MSK;
247 tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
248 rate_flags);
Tomas Winkler4bf64ef2008-07-18 13:53:03 +0800249
250 return sizeof(*tx_beacon_cmd) + frame_size;
251}
Johannes Berg2295c662010-10-23 09:15:41 -0700252
253int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700254{
Tomas Winklerfcab4232008-05-15 13:54:01 +0800255 struct iwl_frame *frame;
Zhu Yib481de92007-09-25 17:54:57 -0700256 unsigned int frame_size;
257 int rc;
Zhu Yib481de92007-09-25 17:54:57 -0700258
Tomas Winklerfcab4232008-05-15 13:54:01 +0800259 frame = iwl_get_free_frame(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700260 if (!frame) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800261 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
Zhu Yib481de92007-09-25 17:54:57 -0700262 "command.\n");
263 return -ENOMEM;
264 }
265
Daniel C Halperin47ff65c2009-11-13 11:56:33 -0800266 frame_size = iwl_hw_get_beacon_cmd(priv, frame);
267 if (!frame_size) {
268 IWL_ERR(priv, "Error configuring the beacon command\n");
269 iwl_free_frame(priv, frame);
270 return -EINVAL;
271 }
Zhu Yib481de92007-09-25 17:54:57 -0700272
Tomas Winkler857485c2008-03-21 13:53:44 -0700273 rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
Zhu Yib481de92007-09-25 17:54:57 -0700274 &frame->u.cmd[0]);
275
Tomas Winklerfcab4232008-05-15 13:54:01 +0800276 iwl_free_frame(priv, frame);
Zhu Yib481de92007-09-25 17:54:57 -0700277
278 return rc;
279}
280
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800281static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
282{
283 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
284
285 dma_addr_t addr = get_unaligned_le32(&tb->lo);
286 if (sizeof(dma_addr_t) > sizeof(u32))
287 addr |=
288 ((dma_addr_t)(le16_to_cpu(tb->hi_n_len) & 0xF) << 16) << 16;
289
290 return addr;
291}
292
293static inline u16 iwl_tfd_tb_get_len(struct iwl_tfd *tfd, u8 idx)
294{
295 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
296
297 return le16_to_cpu(tb->hi_n_len) >> 4;
298}
299
300static inline void iwl_tfd_set_tb(struct iwl_tfd *tfd, u8 idx,
301 dma_addr_t addr, u16 len)
302{
303 struct iwl_tfd_tb *tb = &tfd->tbs[idx];
304 u16 hi_n_len = len << 4;
305
306 put_unaligned_le32(addr, &tb->lo);
307 if (sizeof(dma_addr_t) > sizeof(u32))
308 hi_n_len |= ((addr >> 16) >> 16) & 0xF;
309
310 tb->hi_n_len = cpu_to_le16(hi_n_len);
311
312 tfd->num_tbs = idx + 1;
313}
314
315static inline u8 iwl_tfd_get_num_tbs(struct iwl_tfd *tfd)
316{
317 return tfd->num_tbs & 0x1f;
318}
319
320/**
321 * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
322 * @priv - driver private data
323 * @txq - tx queue
324 *
325 * Does NOT advance any TFD circular buffer read/write indexes
326 * Does NOT free the TFD itself (which is within circular buffer)
327 */
328void iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
329{
Samuel Ortiz59606ff2009-01-23 13:45:13 -0800330 struct iwl_tfd *tfd_tmp = (struct iwl_tfd *)txq->tfds;
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800331 struct iwl_tfd *tfd;
332 struct pci_dev *dev = priv->pci_dev;
333 int index = txq->q.read_ptr;
334 int i;
335 int num_tbs;
336
337 tfd = &tfd_tmp[index];
338
339 /* Sanity check on number of chunks */
340 num_tbs = iwl_tfd_get_num_tbs(tfd);
341
342 if (num_tbs >= IWL_NUM_OF_TBS) {
343 IWL_ERR(priv, "Too many chunks: %i\n", num_tbs);
344 /* @todo issue fatal error, it is quite serious situation */
345 return;
346 }
347
348 /* Unmap tx_cmd */
349 if (num_tbs)
350 pci_unmap_single(dev,
FUJITA Tomonori2e724442010-06-03 14:19:20 +0900351 dma_unmap_addr(&txq->meta[index], mapping),
352 dma_unmap_len(&txq->meta[index], len),
Fenghua Yu96891ce2009-02-18 15:54:33 -0800353 PCI_DMA_BIDIRECTIONAL);
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800354
355 /* Unmap chunks, if any. */
Johannes Bergff0d91c2010-05-17 02:37:34 -0700356 for (i = 1; i < num_tbs; i++)
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800357 pci_unmap_single(dev, iwl_tfd_tb_get_addr(tfd, i),
358 iwl_tfd_tb_get_len(tfd, i), PCI_DMA_TODEVICE);
359
Johannes Bergff0d91c2010-05-17 02:37:34 -0700360 /* free SKB */
361 if (txq->txb) {
362 struct sk_buff *skb;
Johannes Berg6f802402010-05-17 02:37:32 -0700363
Johannes Bergff0d91c2010-05-17 02:37:34 -0700364 skb = txq->txb[txq->q.read_ptr].skb;
Johannes Berg6f802402010-05-17 02:37:32 -0700365
Johannes Bergff0d91c2010-05-17 02:37:34 -0700366 /* can be called from irqs-disabled context */
367 if (skb) {
368 dev_kfree_skb_any(skb);
369 txq->txb[txq->q.read_ptr].skb = NULL;
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800370 }
371 }
372}
373
374int iwl_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv,
375 struct iwl_tx_queue *txq,
376 dma_addr_t addr, u16 len,
377 u8 reset, u8 pad)
378{
379 struct iwl_queue *q;
Samuel Ortiz59606ff2009-01-23 13:45:13 -0800380 struct iwl_tfd *tfd, *tfd_tmp;
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800381 u32 num_tbs;
382
383 q = &txq->q;
Samuel Ortiz59606ff2009-01-23 13:45:13 -0800384 tfd_tmp = (struct iwl_tfd *)txq->tfds;
385 tfd = &tfd_tmp[q->write_ptr];
Samuel Ortiz7aaa1d72009-01-19 15:30:26 -0800386
387 if (reset)
388 memset(tfd, 0, sizeof(*tfd));
389
390 num_tbs = iwl_tfd_get_num_tbs(tfd);
391
392 /* Each TFD can point to a maximum 20 Tx buffers */
393 if (num_tbs >= IWL_NUM_OF_TBS) {
394 IWL_ERR(priv, "Error can not send more than %d chunks\n",
395 IWL_NUM_OF_TBS);
396 return -EINVAL;
397 }
398
399 BUG_ON(addr & ~DMA_BIT_MASK(36));
400 if (unlikely(addr & ~IWL_TX_DMA_MASK))
401 IWL_ERR(priv, "Unaligned address = %llx\n",
402 (unsigned long long)addr);
403
404 iwl_tfd_set_tb(tfd, num_tbs, addr, len);
405
406 return 0;
407}
408
Samuel Ortiza8e74e272009-01-23 13:45:14 -0800409/*
410 * Tell nic where to find circular buffer of Tx Frame Descriptors for
411 * given Tx queue, and enable the DMA channel used for that queue.
412 *
413 * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
414 * channels supported in hardware.
415 */
416int iwl_hw_tx_queue_init(struct iwl_priv *priv,
417 struct iwl_tx_queue *txq)
418{
Samuel Ortiza8e74e272009-01-23 13:45:14 -0800419 int txq_id = txq->q.id;
420
Samuel Ortiza8e74e272009-01-23 13:45:14 -0800421 /* Circular buffer (TFD queue in DRAM) physical base address */
422 iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
423 txq->q.dma_addr >> 8);
424
Samuel Ortiza8e74e272009-01-23 13:45:14 -0800425 return 0;
426}
427
Zhu Yib481de92007-09-25 17:54:57 -0700428/******************************************************************************
429 *
430 * Generic RX handler implementations
431 *
432 ******************************************************************************/
Tomas Winkler885ba202008-05-29 16:34:55 +0800433static void iwl_rx_reply_alive(struct iwl_priv *priv,
434 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -0700435{
Zhu Yi2f301222009-10-09 17:19:45 +0800436 struct iwl_rx_packet *pkt = rxb_addr(rxb);
Tomas Winkler885ba202008-05-29 16:34:55 +0800437 struct iwl_alive_resp *palive;
Zhu Yib481de92007-09-25 17:54:57 -0700438 struct delayed_work *pwork;
439
440 palive = &pkt->u.alive_frame;
441
Tomas Winklere1623442009-01-27 14:27:56 -0800442 IWL_DEBUG_INFO(priv, "Alive ucode status 0x%08X revision "
Zhu Yib481de92007-09-25 17:54:57 -0700443 "0x%01X 0x%01X\n",
444 palive->is_valid, palive->ver_type,
445 palive->ver_subtype);
446
447 if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
Tomas Winklere1623442009-01-27 14:27:56 -0800448 IWL_DEBUG_INFO(priv, "Initialization Alive received.\n");
Zhu Yib481de92007-09-25 17:54:57 -0700449 memcpy(&priv->card_alive_init,
450 &pkt->u.alive_frame,
Tomas Winkler885ba202008-05-29 16:34:55 +0800451 sizeof(struct iwl_init_alive_resp));
Zhu Yib481de92007-09-25 17:54:57 -0700452 pwork = &priv->init_alive_start;
453 } else {
Tomas Winklere1623442009-01-27 14:27:56 -0800454 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
Zhu Yib481de92007-09-25 17:54:57 -0700455 memcpy(&priv->card_alive, &pkt->u.alive_frame,
Tomas Winkler885ba202008-05-29 16:34:55 +0800456 sizeof(struct iwl_alive_resp));
Zhu Yib481de92007-09-25 17:54:57 -0700457 pwork = &priv->alive_start;
458 }
459
460 /* We delay the ALIVE response by 5ms to
461 * give the HW RF Kill time to activate... */
462 if (palive->is_valid == UCODE_VALID_OK)
463 queue_delayed_work(priv->workqueue, pwork,
464 msecs_to_jiffies(5));
465 else
Winkler, Tomas39aadf82008-12-19 10:37:32 +0800466 IWL_WARN(priv, "uCode did not respond OK.\n");
Zhu Yib481de92007-09-25 17:54:57 -0700467}
468
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700469static void iwl_bg_beacon_update(struct work_struct *work)
Zhu Yib481de92007-09-25 17:54:57 -0700470{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -0700471 struct iwl_priv *priv =
472 container_of(work, struct iwl_priv, beacon_update);
Zhu Yib481de92007-09-25 17:54:57 -0700473 struct sk_buff *beacon;
474
Johannes Berg76d04812010-08-23 10:46:47 +0200475 mutex_lock(&priv->mutex);
476 if (!priv->beacon_ctx) {
477 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
478 goto out;
Zhu Yib481de92007-09-25 17:54:57 -0700479 }
480
Johannes Berg60744f62010-08-23 10:46:50 +0200481 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
482 /*
483 * The ucode will send beacon notifications even in
484 * IBSS mode, but we don't want to process them. But
485 * we need to defer the type check to here due to
486 * requiring locking around the beacon_ctx access.
487 */
488 goto out;
489 }
490
Johannes Berg76d04812010-08-23 10:46:47 +0200491 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
492 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
493 if (!beacon) {
Johannes Berg77834542010-10-04 05:50:36 -0700494 IWL_ERR(priv, "update beacon failed -- keeping old\n");
Johannes Berg76d04812010-08-23 10:46:47 +0200495 goto out;
496 }
497
Zhu Yib481de92007-09-25 17:54:57 -0700498 /* new beacon skb is allocated every time; dispose previous.*/
Johannes Berg77834542010-10-04 05:50:36 -0700499 dev_kfree_skb(priv->beacon_skb);
Zhu Yib481de92007-09-25 17:54:57 -0700500
Johannes Berg12e934d2010-10-04 05:50:06 -0700501 priv->beacon_skb = beacon;
Zhu Yib481de92007-09-25 17:54:57 -0700502
Johannes Berg2295c662010-10-23 09:15:41 -0700503 iwlagn_send_beacon_cmd(priv);
Johannes Berg76d04812010-08-23 10:46:47 +0200504 out:
505 mutex_unlock(&priv->mutex);
Zhu Yib481de92007-09-25 17:54:57 -0700506}
507
Wey-Yi Guyfbba9412010-08-23 07:57:10 -0700508static void iwl_bg_bt_runtime_config(struct work_struct *work)
509{
510 struct iwl_priv *priv =
511 container_of(work, struct iwl_priv, bt_runtime_config);
512
513 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
514 return;
515
516 /* dont send host command if rf-kill is on */
517 if (!iwl_is_ready_rf(priv))
518 return;
519 priv->cfg->ops->hcmd->send_bt_config(priv);
520}
521
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700522static void iwl_bg_bt_full_concurrency(struct work_struct *work)
523{
524 struct iwl_priv *priv =
525 container_of(work, struct iwl_priv, bt_full_concurrency);
Johannes Berg246ed352010-08-23 10:46:32 +0200526 struct iwl_rxon_context *ctx;
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700527
528 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
529 return;
530
531 /* dont send host command if rf-kill is on */
532 if (!iwl_is_ready_rf(priv))
533 return;
534
535 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
536 priv->bt_full_concurrent ?
537 "full concurrency" : "3-wire");
538
539 /*
540 * LQ & RXON updated cmds must be sent before BT Config cmd
541 * to avoid 3-wire collisions
542 */
Johannes Berg246ed352010-08-23 10:46:32 +0200543 mutex_lock(&priv->mutex);
544 for_each_context(priv, ctx) {
545 if (priv->cfg->ops->hcmd->set_rxon_chain)
546 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
547 iwlcore_commit_rxon(priv, ctx);
548 }
549 mutex_unlock(&priv->mutex);
Wey-Yi Guybee008b2010-08-23 07:57:04 -0700550
551 priv->cfg->ops->hcmd->send_bt_config(priv);
552}
553
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800554/**
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700555 * iwl_bg_statistics_periodic - Timer callback to queue statistics
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800556 *
557 * This callback is provided in order to send a statistics request.
558 *
559 * This timer function is continually reset to execute within
560 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
561 * was received. We need to ensure we receive the statistics in order
562 * to update the temperature used for calibrating the TXPOWER.
563 */
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700564static void iwl_bg_statistics_periodic(unsigned long data)
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800565{
566 struct iwl_priv *priv = (struct iwl_priv *)data;
567
568 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
569 return;
570
Mohamed Abbas61780ee2008-10-29 14:05:49 -0700571 /* dont send host command if rf-kill is on */
572 if (!iwl_is_ready_rf(priv))
573 return;
574
Wey-Yi Guyef8d5522009-11-13 11:56:28 -0800575 iwl_send_statistics_request(priv, CMD_ASYNC, false);
Emmanuel Grumbach4e393172008-06-12 09:46:53 +0800576}
577
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800578
579static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
580 u32 start_idx, u32 num_events,
581 u32 mode)
582{
583 u32 i;
584 u32 ptr; /* SRAM byte address of log data */
585 u32 ev, time, data; /* event log data */
586 unsigned long reg_flags;
587
588 if (mode == 0)
589 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
590 else
591 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
592
593 /* Make sure device is powered up for SRAM reads */
594 spin_lock_irqsave(&priv->reg_lock, reg_flags);
595 if (iwl_grab_nic_access(priv)) {
596 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
597 return;
598 }
599
600 /* Set starting address; reads will auto-increment */
601 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
602 rmb();
603
604 /*
605 * "time" is actually "data" for mode 0 (no timestamp).
606 * place event id # at far right for easier visual parsing.
607 */
608 for (i = 0; i < num_events; i++) {
609 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
610 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
611 if (mode == 0) {
612 trace_iwlwifi_dev_ucode_cont_event(priv,
613 0, time, ev);
614 } else {
615 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
616 trace_iwlwifi_dev_ucode_cont_event(priv,
617 time, data, ev);
618 }
619 }
620 /* Allow device to power down */
621 iwl_release_nic_access(priv);
622 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
623}
624
Johannes Berg875295f2010-01-22 14:22:55 -0800625static void iwl_continuous_event_trace(struct iwl_priv *priv)
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -0800626{
627 u32 capacity; /* event log capacity in # entries */
628 u32 base; /* SRAM byte address of event log header */
629 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
630 u32 num_wraps; /* # times uCode wrapped to top of log */
631 u32 next_entry; /* index of next entry to be written by uCode */
632
633 if (priv->ucode_type == UCODE_INIT)
634 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
635 else
636 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
637 if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
638 capacity = iwl_read_targ_mem(priv, base);
639 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
640 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
641 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
642 } else
643 return;
644
645 if (num_wraps == priv->event_log.num_wraps) {
646 iwl_print_cont_event_trace(priv,
647 base, priv->event_log.next_entry,
648 next_entry - priv->event_log.next_entry,
649 mode);
650 priv->event_log.non_wraps_count++;
651 } else {
652 if ((num_wraps - priv->event_log.num_wraps) > 1)
653 priv->event_log.wraps_more_count++;
654 else
655 priv->event_log.wraps_once_count++;
656 trace_iwlwifi_dev_ucode_wrap_event(priv,
657 num_wraps - priv->event_log.num_wraps,
658 next_entry, priv->event_log.next_entry);
659 if (next_entry < priv->event_log.next_entry) {
660 iwl_print_cont_event_trace(priv, base,
661 priv->event_log.next_entry,
662 capacity - priv->event_log.next_entry,
663 mode);
664
665 iwl_print_cont_event_trace(priv, base, 0,
666 next_entry, mode);
667 } else {
668 iwl_print_cont_event_trace(priv, base,
669 next_entry, capacity - next_entry,
670 mode);
671
672 iwl_print_cont_event_trace(priv, base, 0,
673 next_entry, mode);
674 }
675 }
676 priv->event_log.num_wraps = num_wraps;
677 priv->event_log.next_entry = next_entry;
678}
679
680/**
681 * iwl_bg_ucode_trace - Timer callback to log ucode event
682 *
683 * The timer is continually set to execute every
684 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
685 * this function is to perform continuous uCode event logging operation
686 * if enabled
687 */
688static void iwl_bg_ucode_trace(unsigned long data)
689{
690 struct iwl_priv *priv = (struct iwl_priv *)data;
691
692 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
693 return;
694
695 if (priv->event_log.ucode_trace) {
696 iwl_continuous_event_trace(priv);
697 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
698 mod_timer(&priv->ucode_trace,
699 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
700 }
701}
702
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700703static void iwl_rx_beacon_notif(struct iwl_priv *priv,
Tomas Winklera55360e2008-05-05 10:22:28 +0800704 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -0700705{
Zhu Yi2f301222009-10-09 17:19:45 +0800706 struct iwl_rx_packet *pkt = rxb_addr(rxb);
Tomas Winkler2aa6ab82008-12-11 10:33:40 -0800707 struct iwl4965_beacon_notif *beacon =
708 (struct iwl4965_beacon_notif *)pkt->u.raw;
Johannes Berga85d7cc2010-07-31 08:34:10 -0700709#ifdef CONFIG_IWLWIFI_DEBUG
Tomas Winklere7d326a2008-06-12 09:47:11 +0800710 u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
Zhu Yib481de92007-09-25 17:54:57 -0700711
Tomas Winklere1623442009-01-27 14:27:56 -0800712 IWL_DEBUG_RX(priv, "beacon status %x retries %d iss %d "
Zhu Yib481de92007-09-25 17:54:57 -0700713 "tsf %d %d rate %d\n",
Tomas Winkler25a65722008-06-12 09:47:07 +0800714 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
Zhu Yib481de92007-09-25 17:54:57 -0700715 beacon->beacon_notify_hdr.failure_frame,
716 le32_to_cpu(beacon->ibss_mgr_status),
717 le32_to_cpu(beacon->high_tsf),
718 le32_to_cpu(beacon->low_tsf), rate);
719#endif
720
Johannes Berga85d7cc2010-07-31 08:34:10 -0700721 priv->ibss_manager = le32_to_cpu(beacon->ibss_mgr_status);
722
Johannes Berg60744f62010-08-23 10:46:50 +0200723 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
Zhu Yib481de92007-09-25 17:54:57 -0700724 queue_work(priv->workqueue, &priv->beacon_update);
725}
726
Zhu Yib481de92007-09-25 17:54:57 -0700727/* Handle notification from uCode that card's power state is changing
728 * due to software, hardware, or critical temperature RFKILL */
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700729static void iwl_rx_card_state_notif(struct iwl_priv *priv,
Tomas Winklera55360e2008-05-05 10:22:28 +0800730 struct iwl_rx_mem_buffer *rxb)
Zhu Yib481de92007-09-25 17:54:57 -0700731{
Zhu Yi2f301222009-10-09 17:19:45 +0800732 struct iwl_rx_packet *pkt = rxb_addr(rxb);
Zhu Yib481de92007-09-25 17:54:57 -0700733 u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
734 unsigned long status = priv->status;
735
Wey-Yi Guy3a41bbd2009-12-10 14:37:24 -0800736 IWL_DEBUG_RF_KILL(priv, "Card state received: HW:%s SW:%s CT:%s\n",
Zhu Yib481de92007-09-25 17:54:57 -0700737 (flags & HW_CARD_DISABLED) ? "Kill" : "On",
Wey-Yi Guy3a41bbd2009-12-10 14:37:24 -0800738 (flags & SW_CARD_DISABLED) ? "Kill" : "On",
739 (flags & CT_CARD_DISABLED) ?
740 "Reached" : "Not reached");
Zhu Yib481de92007-09-25 17:54:57 -0700741
742 if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
Wey-Yi Guy3a41bbd2009-12-10 14:37:24 -0800743 CT_CARD_DISABLED)) {
Zhu Yib481de92007-09-25 17:54:57 -0700744
Tomas Winkler3395f6e2008-03-25 16:33:37 -0700745 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
Zhu Yib481de92007-09-25 17:54:57 -0700746 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
747
Mohamed Abbasa8b50a02009-05-22 11:01:47 -0700748 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
749 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
Zhu Yib481de92007-09-25 17:54:57 -0700750
751 if (!(flags & RXON_CARD_DISABLED)) {
Tomas Winkler3395f6e2008-03-25 16:33:37 -0700752 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
Zhu Yib481de92007-09-25 17:54:57 -0700753 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
Mohamed Abbasa8b50a02009-05-22 11:01:47 -0700754 iwl_write_direct32(priv, HBUS_TARG_MBX_C,
Zhu Yib481de92007-09-25 17:54:57 -0700755 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
Zhu Yib481de92007-09-25 17:54:57 -0700756 }
Wey-Yi Guy3a41bbd2009-12-10 14:37:24 -0800757 if (flags & CT_CARD_DISABLED)
Wey-Yi Guy39b73fb12009-07-24 11:13:02 -0700758 iwl_tt_enter_ct_kill(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700759 }
Wey-Yi Guy3a41bbd2009-12-10 14:37:24 -0800760 if (!(flags & CT_CARD_DISABLED))
Wey-Yi Guy39b73fb12009-07-24 11:13:02 -0700761 iwl_tt_exit_ct_kill(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700762
763 if (flags & HW_CARD_DISABLED)
764 set_bit(STATUS_RF_KILL_HW, &priv->status);
765 else
766 clear_bit(STATUS_RF_KILL_HW, &priv->status);
767
768
Zhu Yib481de92007-09-25 17:54:57 -0700769 if (!(flags & RXON_CARD_DISABLED))
Tomas Winkler2a421b92008-06-12 09:47:10 +0800770 iwl_scan_cancel(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700771
772 if ((test_bit(STATUS_RF_KILL_HW, &status) !=
Johannes Berga60e77e2009-06-04 18:26:06 +0200773 test_bit(STATUS_RF_KILL_HW, &priv->status)))
774 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
775 test_bit(STATUS_RF_KILL_HW, &priv->status));
Zhu Yib481de92007-09-25 17:54:57 -0700776 else
777 wake_up_interruptible(&priv->wait_command_queue);
778}
779
Wey-Yi Guy65550632010-06-24 13:18:35 -0700780static void iwl_bg_tx_flush(struct work_struct *work)
781{
782 struct iwl_priv *priv =
783 container_of(work, struct iwl_priv, tx_flush);
784
785 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
786 return;
787
788 /* do nothing if rf-kill is on */
789 if (!iwl_is_ready_rf(priv))
790 return;
791
792 if (priv->cfg->ops->lib->txfifo_flush) {
793 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
794 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
795 }
796}
797
Zhu Yib481de92007-09-25 17:54:57 -0700798/**
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700799 * iwl_setup_rx_handlers - Initialize Rx handler callbacks
Zhu Yib481de92007-09-25 17:54:57 -0700800 *
801 * Setup the RX handlers for each of the reply types sent from the uCode
802 * to the host.
803 *
804 * This function chains into the hardware specific files for them to setup
805 * any hardware specific handlers as well.
806 */
Emmanuel Grumbach653fa4a2008-06-30 17:23:11 +0800807static void iwl_setup_rx_handlers(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700808{
Tomas Winkler885ba202008-05-29 16:34:55 +0800809 priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700810 priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
811 priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
Reinette Chatre81963d62010-01-22 14:22:57 -0800812 priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
813 iwl_rx_spectrum_measure_notif;
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700814 priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
Zhu Yib481de92007-09-25 17:54:57 -0700815 priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700816 iwl_rx_pm_debug_statistics_notif;
817 priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
Zhu Yib481de92007-09-25 17:54:57 -0700818
Ben Cahill9fbab512007-11-29 11:09:47 +0800819 /*
820 * The same handler is used for both the REPLY to a discrete
821 * statistics request from the host as well as for the periodic
822 * statistics notifications (after received beacons) from the uCode.
Zhu Yib481de92007-09-25 17:54:57 -0700823 */
Wey-Yi Guyef8d5522009-11-13 11:56:28 -0800824 priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_reply_statistics;
Emmanuel Grumbach8f91aec2008-06-30 17:23:07 +0800825 priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
Tomas Winkler2a421b92008-06-12 09:47:10 +0800826
827 iwl_setup_rx_scan_handlers(priv);
828
Ron Rindjunsky37a44212008-05-29 16:35:18 +0800829 /* status change handler */
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700830 priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
Zhu Yib481de92007-09-25 17:54:57 -0700831
Tomas Winklerc1354752008-05-29 16:35:04 +0800832 priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
833 iwl_rx_missed_beacon_notif;
Ron Rindjunsky37a44212008-05-29 16:35:18 +0800834 /* Rx handlers */
Wey-Yi Guy8d801082010-03-17 13:34:36 -0700835 priv->rx_handlers[REPLY_RX_PHY_CMD] = iwlagn_rx_reply_rx_phy;
836 priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwlagn_rx_reply_rx;
Emmanuel Grumbach653fa4a2008-06-30 17:23:11 +0800837 /* block ack */
Wey-Yi Guy74bcdb32010-03-17 13:34:34 -0700838 priv->rx_handlers[REPLY_COMPRESSED_BA] = iwlagn_rx_reply_compressed_ba;
Ben Cahill9fbab512007-11-29 11:09:47 +0800839 /* Set up hardware specific Rx handlers */
Emmanuel Grumbachd4789ef2008-04-24 11:55:20 -0700840 priv->cfg->ops->lib->rx_handler_setup(priv);
Zhu Yib481de92007-09-25 17:54:57 -0700841}
842
Zhu Yib481de92007-09-25 17:54:57 -0700843/**
Tomas Winklera55360e2008-05-05 10:22:28 +0800844 * iwl_rx_handle - Main entry function for receiving responses from uCode
Zhu Yib481de92007-09-25 17:54:57 -0700845 *
846 * Uses the priv->rx_handlers callback function array to invoke
847 * the appropriate handlers, including command responses,
848 * frame-received notifications, and other notifications.
849 */
Johannes Bergf945f102011-01-04 16:21:59 -0800850static void iwl_rx_handle(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -0700851{
Tomas Winklera55360e2008-05-05 10:22:28 +0800852 struct iwl_rx_mem_buffer *rxb;
Tomas Winklerdb11d632008-05-05 10:22:33 +0800853 struct iwl_rx_packet *pkt;
Tomas Winklera55360e2008-05-05 10:22:28 +0800854 struct iwl_rx_queue *rxq = &priv->rxq;
Zhu Yib481de92007-09-25 17:54:57 -0700855 u32 r, i;
856 int reclaim;
857 unsigned long flags;
Mohamed Abbas5c0eef92007-11-29 11:10:14 +0800858 u8 fill_rx = 0;
Mohamed Abbasd68ab682008-02-07 13:16:33 -0800859 u32 count = 8;
Mohamed Abbas4752c932009-05-22 11:01:51 -0700860 int total_empty;
Zhu Yib481de92007-09-25 17:54:57 -0700861
Cahill, Ben M6440adb2007-11-29 11:09:55 +0800862 /* uCode's read index (stored in shared DRAM) indicates the last Rx
863 * buffer that the driver may process (last buffer filled by ucode). */
Winkler, Tomas8d864222008-11-07 09:58:39 -0800864 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
Zhu Yib481de92007-09-25 17:54:57 -0700865 i = rxq->read;
866
867 /* Rx interrupt, but nothing sent from uCode */
868 if (i == r)
Tomas Winklere1623442009-01-27 14:27:56 -0800869 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
Zhu Yib481de92007-09-25 17:54:57 -0700870
Mohamed Abbas4752c932009-05-22 11:01:51 -0700871 /* calculate total frames need to be restock after handling RX */
Zhu Yi73005152009-10-23 13:42:32 -0700872 total_empty = r - rxq->write_actual;
Mohamed Abbas4752c932009-05-22 11:01:51 -0700873 if (total_empty < 0)
874 total_empty += RX_QUEUE_SIZE;
875
876 if (total_empty > (RX_QUEUE_SIZE / 2))
Mohamed Abbas5c0eef92007-11-29 11:10:14 +0800877 fill_rx = 1;
878
Zhu Yib481de92007-09-25 17:54:57 -0700879 while (i != r) {
Johannes Bergf4989d92010-05-28 04:08:30 -0700880 int len;
881
Zhu Yib481de92007-09-25 17:54:57 -0700882 rxb = rxq->queue[i];
883
Ben Cahill9fbab512007-11-29 11:09:47 +0800884 /* If an RXB doesn't have a Rx queue slot associated with it,
Zhu Yib481de92007-09-25 17:54:57 -0700885 * then a bug has been introduced in the queue refilling
886 * routines -- catch it here */
887 BUG_ON(rxb == NULL);
888
889 rxq->queue[i] = NULL;
890
Zhu Yi2f301222009-10-09 17:19:45 +0800891 pci_unmap_page(priv->pci_dev, rxb->page_dma,
892 PAGE_SIZE << priv->hw_params.rx_page_order,
893 PCI_DMA_FROMDEVICE);
894 pkt = rxb_addr(rxb);
Zhu Yib481de92007-09-25 17:54:57 -0700895
Johannes Bergf4989d92010-05-28 04:08:30 -0700896 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
897 len += sizeof(u32); /* account for status word */
898 trace_iwlwifi_dev_rx(priv, pkt, len);
Johannes Bergbe1a71a2009-10-02 13:44:02 -0700899
Zhu Yib481de92007-09-25 17:54:57 -0700900 /* Reclaim a command buffer only if this packet is a response
901 * to a (driver-originated) command.
902 * If the packet (e.g. Rx frame) originated from uCode,
903 * there is no command buffer to reclaim.
904 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
905 * but apparently a few don't get set; catch them here. */
906 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
907 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
Tomas Winkler857485c2008-03-21 13:53:44 -0700908 (pkt->hdr.cmd != REPLY_RX) &&
Daniel Halperin7dddaf12008-10-23 23:48:58 -0700909 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
Zhu Yicfe01702007-09-27 11:27:31 +0800910 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
Zhu Yib481de92007-09-25 17:54:57 -0700911 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
912 (pkt->hdr.cmd != REPLY_TX);
913
Johannes Berg7194207c2011-01-04 16:22:00 -0800914 /*
915 * Do the notification wait before RX handlers so
916 * even if the RX handler consumes the RXB we have
917 * access to it in the notification wait entry.
918 */
919 if (!list_empty(&priv->_agn.notif_waits)) {
920 struct iwl_notification_wait *w;
921
922 spin_lock(&priv->_agn.notif_wait_lock);
923 list_for_each_entry(w, &priv->_agn.notif_waits, list) {
924 if (w->cmd == pkt->hdr.cmd) {
925 w->triggered = true;
926 if (w->fn)
927 w->fn(priv, pkt);
928 }
929 }
930 spin_unlock(&priv->_agn.notif_wait_lock);
931
932 wake_up_all(&priv->_agn.notif_waitq);
933 }
934
Zhu Yib481de92007-09-25 17:54:57 -0700935 /* Based on type of command response or notification,
936 * handle those that need handling via function in
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -0700937 * rx_handlers table. See iwl_setup_rx_handlers() */
Zhu Yib481de92007-09-25 17:54:57 -0700938 if (priv->rx_handlers[pkt->hdr.cmd]) {
Tomas Winklere1623442009-01-27 14:27:56 -0800939 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
Ester Kummerf3d67992008-05-06 11:05:12 +0800940 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
Wey-Yi Guya83b9142009-04-08 11:39:32 -0700941 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
Zhu Yi29b1b262009-10-23 13:42:25 -0700942 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
Zhu Yib481de92007-09-25 17:54:57 -0700943 } else {
944 /* No handling needed */
Tomas Winklere1623442009-01-27 14:27:56 -0800945 IWL_DEBUG_RX(priv,
Zhu Yib481de92007-09-25 17:54:57 -0700946 "r %d i %d No handler needed for %s, 0x%02x\n",
947 r, i, get_cmd_string(pkt->hdr.cmd),
948 pkt->hdr.cmd);
949 }
950
Zhu Yi29b1b262009-10-23 13:42:25 -0700951 /*
952 * XXX: After here, we should always check rxb->page
953 * against NULL before touching it or its virtual
954 * memory (pkt). Because some rx_handler might have
955 * already taken or freed the pages.
956 */
957
Zhu Yib481de92007-09-25 17:54:57 -0700958 if (reclaim) {
Zhu Yi2f301222009-10-09 17:19:45 +0800959 /* Invoke any callbacks, transfer the buffer to caller,
960 * and fire off the (possibly) blocking iwl_send_cmd()
Zhu Yib481de92007-09-25 17:54:57 -0700961 * as we reclaim the driver command queue */
Zhu Yi29b1b262009-10-23 13:42:25 -0700962 if (rxb->page)
Tomas Winkler17b88922008-05-29 16:35:12 +0800963 iwl_tx_cmd_complete(priv, rxb);
Zhu Yib481de92007-09-25 17:54:57 -0700964 else
Winkler, Tomas39aadf82008-12-19 10:37:32 +0800965 IWL_WARN(priv, "Claim null rxb?\n");
Zhu Yib481de92007-09-25 17:54:57 -0700966 }
967
Zhu Yi73005152009-10-23 13:42:32 -0700968 /* Reuse the page if possible. For notification packets and
969 * SKBs that fail to Rx correctly, add them back into the
970 * rx_free list for reuse later. */
Zhu Yib481de92007-09-25 17:54:57 -0700971 spin_lock_irqsave(&rxq->lock, flags);
Zhu Yi73005152009-10-23 13:42:32 -0700972 if (rxb->page != NULL) {
973 rxb->page_dma = pci_map_page(priv->pci_dev, rxb->page,
974 0, PAGE_SIZE << priv->hw_params.rx_page_order,
975 PCI_DMA_FROMDEVICE);
976 list_add_tail(&rxb->list, &rxq->rx_free);
977 rxq->free_count++;
978 } else
979 list_add_tail(&rxb->list, &rxq->rx_used);
980
Zhu Yib481de92007-09-25 17:54:57 -0700981 spin_unlock_irqrestore(&rxq->lock, flags);
Zhu Yi73005152009-10-23 13:42:32 -0700982
Zhu Yib481de92007-09-25 17:54:57 -0700983 i = (i + 1) & RX_QUEUE_MASK;
Mohamed Abbas5c0eef92007-11-29 11:10:14 +0800984 /* If there are a lot of unused frames,
985 * restock the Rx queue so ucode wont assert. */
986 if (fill_rx) {
987 count++;
988 if (count >= 8) {
Zhu Yi73005152009-10-23 13:42:32 -0700989 rxq->read = i;
Wey-Yi Guy54b81552010-03-17 13:34:35 -0700990 iwlagn_rx_replenish_now(priv);
Mohamed Abbas5c0eef92007-11-29 11:10:14 +0800991 count = 0;
992 }
993 }
Zhu Yib481de92007-09-25 17:54:57 -0700994 }
995
996 /* Backtrack one entry */
Zhu Yi73005152009-10-23 13:42:32 -0700997 rxq->read = i;
Mohamed Abbas4752c932009-05-22 11:01:51 -0700998 if (fill_rx)
Wey-Yi Guy54b81552010-03-17 13:34:35 -0700999 iwlagn_rx_replenish_now(priv);
Mohamed Abbas4752c932009-05-22 11:01:51 -07001000 else
Wey-Yi Guy54b81552010-03-17 13:34:35 -07001001 iwlagn_rx_queue_restock(priv);
Tomas Winklera55360e2008-05-05 10:22:28 +08001002}
Tomas Winklera55360e2008-05-05 10:22:28 +08001003
Mohamed Abbas0359fac2008-03-28 16:21:08 -07001004/* call this function to flush any scheduled tasklet */
1005static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1006{
Tomas Winklera96a27f2008-10-23 23:48:56 -07001007 /* wait to make sure we flush pending tasklet*/
Mohamed Abbas0359fac2008-03-28 16:21:08 -07001008 synchronize_irq(priv->pci_dev->irq);
1009 tasklet_kill(&priv->irq_tasklet);
1010}
1011
Mohamed Abbasef850d72009-05-22 11:01:50 -07001012static void iwl_irq_tasklet_legacy(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001013{
1014 u32 inta, handled = 0;
1015 u32 inta_fh;
1016 unsigned long flags;
Ben Cahillc2e61da2009-10-30 14:36:09 -07001017 u32 i;
Tomas Winkler0a6857e2008-03-12 16:58:49 -07001018#ifdef CONFIG_IWLWIFI_DEBUG
Zhu Yib481de92007-09-25 17:54:57 -07001019 u32 inta_mask;
1020#endif
1021
1022 spin_lock_irqsave(&priv->lock, flags);
1023
1024 /* Ack/clear/reset pending uCode interrupts.
1025 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1026 * and will clear only when CSR_FH_INT_STATUS gets cleared. */
Tomas Winkler3395f6e2008-03-25 16:33:37 -07001027 inta = iwl_read32(priv, CSR_INT);
1028 iwl_write32(priv, CSR_INT, inta);
Zhu Yib481de92007-09-25 17:54:57 -07001029
1030 /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1031 * Any new interrupts that happen after this, either while we're
1032 * in this tasklet, or later, will show up in next ISR/tasklet. */
Tomas Winkler3395f6e2008-03-25 16:33:37 -07001033 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1034 iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
Zhu Yib481de92007-09-25 17:54:57 -07001035
Tomas Winkler0a6857e2008-03-12 16:58:49 -07001036#ifdef CONFIG_IWLWIFI_DEBUG
Reinette Chatre3d816c72009-08-07 15:41:37 -07001037 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
Ben Cahill9fbab512007-11-29 11:09:47 +08001038 /* just for debug */
Tomas Winkler3395f6e2008-03-25 16:33:37 -07001039 inta_mask = iwl_read32(priv, CSR_INT_MASK);
Tomas Winklere1623442009-01-27 14:27:56 -08001040 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
Zhu Yib481de92007-09-25 17:54:57 -07001041 inta, inta_mask, inta_fh);
1042 }
1043#endif
1044
Zhu Yi2f301222009-10-09 17:19:45 +08001045 spin_unlock_irqrestore(&priv->lock, flags);
1046
Zhu Yib481de92007-09-25 17:54:57 -07001047 /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1048 * atomic, make sure that inta covers all the interrupts that
1049 * we've discovered, even if FH interrupt came in just after
1050 * reading CSR_INT. */
Tomas Winkler6f83eaa2008-03-04 18:09:28 -08001051 if (inta_fh & CSR49_FH_INT_RX_MASK)
Zhu Yib481de92007-09-25 17:54:57 -07001052 inta |= CSR_INT_BIT_FH_RX;
Tomas Winkler6f83eaa2008-03-04 18:09:28 -08001053 if (inta_fh & CSR49_FH_INT_TX_MASK)
Zhu Yib481de92007-09-25 17:54:57 -07001054 inta |= CSR_INT_BIT_FH_TX;
1055
1056 /* Now service all interrupt bits discovered above. */
1057 if (inta & CSR_INT_BIT_HW_ERR) {
Reinette Chatre58dba722009-07-17 09:30:25 -07001058 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
Zhu Yib481de92007-09-25 17:54:57 -07001059
1060 /* Tell the device to stop sending interrupts */
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001061 iwl_disable_interrupts(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001062
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001063 priv->isr_stats.hw++;
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001064 iwl_irq_handle_error(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001065
1066 handled |= CSR_INT_BIT_HW_ERR;
1067
Zhu Yib481de92007-09-25 17:54:57 -07001068 return;
1069 }
1070
Tomas Winkler0a6857e2008-03-12 16:58:49 -07001071#ifdef CONFIG_IWLWIFI_DEBUG
Reinette Chatre3d816c72009-08-07 15:41:37 -07001072 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
Zhu Yib481de92007-09-25 17:54:57 -07001073 /* NIC fires this, but we don't use it, redundant with WAKEUP */
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001074 if (inta & CSR_INT_BIT_SCD) {
Tomas Winklere1623442009-01-27 14:27:56 -08001075 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
Joonwoo Park25c03d82008-01-23 10:15:20 -08001076 "the frame/frames.\n");
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001077 priv->isr_stats.sch++;
1078 }
Zhu Yib481de92007-09-25 17:54:57 -07001079
1080 /* Alive notification via Rx interrupt will do the real work */
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001081 if (inta & CSR_INT_BIT_ALIVE) {
Tomas Winklere1623442009-01-27 14:27:56 -08001082 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001083 priv->isr_stats.alive++;
1084 }
Zhu Yib481de92007-09-25 17:54:57 -07001085 }
1086#endif
1087 /* Safely ignore these bits for debug checks below */
Joonwoo Park25c03d82008-01-23 10:15:20 -08001088 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
Zhu Yib481de92007-09-25 17:54:57 -07001089
Ben Cahill9fbab512007-11-29 11:09:47 +08001090 /* HW RF KILL switch toggled */
Zhu Yib481de92007-09-25 17:54:57 -07001091 if (inta & CSR_INT_BIT_RF_KILL) {
1092 int hw_rf_kill = 0;
Tomas Winkler3395f6e2008-03-25 16:33:37 -07001093 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
Zhu Yib481de92007-09-25 17:54:57 -07001094 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1095 hw_rf_kill = 1;
1096
Reinette Chatre4c423a22009-07-17 09:30:26 -07001097 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
Abhijeet Kolekarc3056062008-11-12 13:14:08 -08001098 hw_rf_kill ? "disable radio" : "enable radio");
Zhu Yib481de92007-09-25 17:54:57 -07001099
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001100 priv->isr_stats.rfkill++;
1101
Emmanuel Grumbacha9efa652008-06-30 17:23:25 +08001102 /* driver only loads ucode once setting the interface up.
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01001103 * the driver allows loading the ucode even if the radio
1104 * is killed. Hence update the killswitch state here. The
1105 * rfkill handler will care about restarting if needed.
Emmanuel Grumbacha9efa652008-06-30 17:23:25 +08001106 */
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01001107 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1108 if (hw_rf_kill)
1109 set_bit(STATUS_RF_KILL_HW, &priv->status);
1110 else
1111 clear_bit(STATUS_RF_KILL_HW, &priv->status);
Johannes Berga60e77e2009-06-04 18:26:06 +02001112 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
Mohamed Abbasedb34222008-12-11 10:33:37 -08001113 }
Zhu Yib481de92007-09-25 17:54:57 -07001114
1115 handled |= CSR_INT_BIT_RF_KILL;
1116 }
1117
Ben Cahill9fbab512007-11-29 11:09:47 +08001118 /* Chip got too hot and stopped itself */
Zhu Yib481de92007-09-25 17:54:57 -07001119 if (inta & CSR_INT_BIT_CT_KILL) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08001120 IWL_ERR(priv, "Microcode CT kill error detected.\n");
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001121 priv->isr_stats.ctkill++;
Zhu Yib481de92007-09-25 17:54:57 -07001122 handled |= CSR_INT_BIT_CT_KILL;
1123 }
1124
1125 /* Error detected by uCode */
1126 if (inta & CSR_INT_BIT_SW_ERR) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08001127 IWL_ERR(priv, "Microcode SW error detected. "
1128 " Restarting 0x%X.\n", inta);
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001129 priv->isr_stats.sw++;
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001130 iwl_irq_handle_error(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001131 handled |= CSR_INT_BIT_SW_ERR;
1132 }
1133
Ben Cahillc2e61da2009-10-30 14:36:09 -07001134 /*
1135 * uCode wakes up after power-down sleep.
1136 * Tell device about any new tx or host commands enqueued,
1137 * and about any Rx buffers made available while asleep.
1138 */
Zhu Yib481de92007-09-25 17:54:57 -07001139 if (inta & CSR_INT_BIT_WAKEUP) {
Tomas Winklere1623442009-01-27 14:27:56 -08001140 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
Tomas Winklera55360e2008-05-05 10:22:28 +08001141 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
Ben Cahillc2e61da2009-10-30 14:36:09 -07001142 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1143 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001144 priv->isr_stats.wakeup++;
Zhu Yib481de92007-09-25 17:54:57 -07001145 handled |= CSR_INT_BIT_WAKEUP;
1146 }
1147
1148 /* All uCode command responses, including Tx command responses,
1149 * Rx "responses" (frame-received notification), and other
1150 * notifications from uCode come through here*/
1151 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
Tomas Winklera55360e2008-05-05 10:22:28 +08001152 iwl_rx_handle(priv);
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001153 priv->isr_stats.rx++;
Zhu Yib481de92007-09-25 17:54:57 -07001154 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1155 }
1156
Ben Cahillc72cd192009-10-30 14:36:08 -07001157 /* This "Tx" DMA channel is used only for loading uCode */
Zhu Yib481de92007-09-25 17:54:57 -07001158 if (inta & CSR_INT_BIT_FH_TX) {
Ben Cahillc72cd192009-10-30 14:36:08 -07001159 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001160 priv->isr_stats.tx++;
Zhu Yib481de92007-09-25 17:54:57 -07001161 handled |= CSR_INT_BIT_FH_TX;
Ben Cahillc72cd192009-10-30 14:36:08 -07001162 /* Wake up uCode load routine, now that load is complete */
Ron Rindjunskydbb983b2008-05-15 13:54:12 +08001163 priv->ucode_write_complete = 1;
1164 wake_up_interruptible(&priv->wait_command_queue);
Zhu Yib481de92007-09-25 17:54:57 -07001165 }
1166
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001167 if (inta & ~handled) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08001168 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001169 priv->isr_stats.unhandled++;
1170 }
Zhu Yib481de92007-09-25 17:54:57 -07001171
Mohamed Abbas40cefda2009-05-22 11:01:52 -07001172 if (inta & ~(priv->inta_mask)) {
Winkler, Tomas39aadf82008-12-19 10:37:32 +08001173 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
Mohamed Abbas40cefda2009-05-22 11:01:52 -07001174 inta & ~priv->inta_mask);
Winkler, Tomas39aadf82008-12-19 10:37:32 +08001175 IWL_WARN(priv, " with FH_INT = 0x%08x\n", inta_fh);
Zhu Yib481de92007-09-25 17:54:57 -07001176 }
1177
1178 /* Re-enable all interrupts */
Justin P. Mattock62e45c12010-12-30 15:07:56 -08001179 /* only Re-enable if disabled by irq */
Mohamed Abbas0359fac2008-03-28 16:21:08 -07001180 if (test_bit(STATUS_INT_ENABLED, &priv->status))
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001181 iwl_enable_interrupts(priv);
Zhu Yib481de92007-09-25 17:54:57 -07001182
Tomas Winkler0a6857e2008-03-12 16:58:49 -07001183#ifdef CONFIG_IWLWIFI_DEBUG
Reinette Chatre3d816c72009-08-07 15:41:37 -07001184 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
Tomas Winkler3395f6e2008-03-25 16:33:37 -07001185 inta = iwl_read32(priv, CSR_INT);
1186 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1187 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
Tomas Winklere1623442009-01-27 14:27:56 -08001188 IWL_DEBUG_ISR(priv, "End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
Zhu Yib481de92007-09-25 17:54:57 -07001189 "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1190 }
1191#endif
Zhu Yib481de92007-09-25 17:54:57 -07001192}
1193
Mohamed Abbasef850d72009-05-22 11:01:50 -07001194/* tasklet for iwlagn interrupt */
1195static void iwl_irq_tasklet(struct iwl_priv *priv)
1196{
1197 u32 inta = 0;
1198 u32 handled = 0;
1199 unsigned long flags;
Ben Cahill87569902009-11-06 14:53:01 -08001200 u32 i;
Mohamed Abbasef850d72009-05-22 11:01:50 -07001201#ifdef CONFIG_IWLWIFI_DEBUG
1202 u32 inta_mask;
1203#endif
1204
1205 spin_lock_irqsave(&priv->lock, flags);
1206
1207 /* Ack/clear/reset pending uCode interrupts.
1208 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1209 */
Shanyu Zhao48a6be62010-03-16 10:22:26 -07001210 /* There is a hardware bug in the interrupt mask function that some
1211 * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
1212 * they are disabled in the CSR_INT_MASK register. Furthermore the
1213 * ICT interrupt handling mechanism has another bug that might cause
1214 * these unmasked interrupts fail to be detected. We workaround the
1215 * hardware bugs here by ACKing all the possible interrupts so that
1216 * interrupt coalescing can still be achieved.
1217 */
David S. Miller4a35ecf2010-04-06 23:53:30 -07001218 iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
Mohamed Abbasef850d72009-05-22 11:01:50 -07001219
Johannes Berga4c8b2a2010-01-21 06:25:54 -08001220 inta = priv->_agn.inta;
Mohamed Abbasef850d72009-05-22 11:01:50 -07001221
1222#ifdef CONFIG_IWLWIFI_DEBUG
Reinette Chatre3d816c72009-08-07 15:41:37 -07001223 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
Mohamed Abbasef850d72009-05-22 11:01:50 -07001224 /* just for debug */
1225 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1226 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
1227 inta, inta_mask);
1228 }
1229#endif
Zhu Yi2f301222009-10-09 17:19:45 +08001230
1231 spin_unlock_irqrestore(&priv->lock, flags);
1232
Johannes Berga4c8b2a2010-01-21 06:25:54 -08001233 /* saved interrupt in inta variable now we can reset priv->_agn.inta */
1234 priv->_agn.inta = 0;
Mohamed Abbasef850d72009-05-22 11:01:50 -07001235
1236 /* Now service all interrupt bits discovered above. */
1237 if (inta & CSR_INT_BIT_HW_ERR) {
Reinette Chatre58dba722009-07-17 09:30:25 -07001238 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
Mohamed Abbasef850d72009-05-22 11:01:50 -07001239
1240 /* Tell the device to stop sending interrupts */
1241 iwl_disable_interrupts(priv);
1242
1243 priv->isr_stats.hw++;
1244 iwl_irq_handle_error(priv);
1245
1246 handled |= CSR_INT_BIT_HW_ERR;
1247
Mohamed Abbasef850d72009-05-22 11:01:50 -07001248 return;
1249 }
1250
1251#ifdef CONFIG_IWLWIFI_DEBUG
Reinette Chatre3d816c72009-08-07 15:41:37 -07001252 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
Mohamed Abbasef850d72009-05-22 11:01:50 -07001253 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1254 if (inta & CSR_INT_BIT_SCD) {
1255 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
1256 "the frame/frames.\n");
1257 priv->isr_stats.sch++;
1258 }
1259
1260 /* Alive notification via Rx interrupt will do the real work */
1261 if (inta & CSR_INT_BIT_ALIVE) {
1262 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
1263 priv->isr_stats.alive++;
1264 }
1265 }
1266#endif
1267 /* Safely ignore these bits for debug checks below */
1268 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1269
1270 /* HW RF KILL switch toggled */
1271 if (inta & CSR_INT_BIT_RF_KILL) {
1272 int hw_rf_kill = 0;
1273 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1274 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1275 hw_rf_kill = 1;
1276
Reinette Chatre4c423a22009-07-17 09:30:26 -07001277 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
Mohamed Abbasef850d72009-05-22 11:01:50 -07001278 hw_rf_kill ? "disable radio" : "enable radio");
1279
1280 priv->isr_stats.rfkill++;
1281
1282 /* driver only loads ucode once setting the interface up.
1283 * the driver allows loading the ucode even if the radio
1284 * is killed. Hence update the killswitch state here. The
1285 * rfkill handler will care about restarting if needed.
1286 */
1287 if (!test_bit(STATUS_ALIVE, &priv->status)) {
1288 if (hw_rf_kill)
1289 set_bit(STATUS_RF_KILL_HW, &priv->status);
1290 else
1291 clear_bit(STATUS_RF_KILL_HW, &priv->status);
Johannes Berga60e77e2009-06-04 18:26:06 +02001292 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
Mohamed Abbasef850d72009-05-22 11:01:50 -07001293 }
1294
1295 handled |= CSR_INT_BIT_RF_KILL;
1296 }
1297
1298 /* Chip got too hot and stopped itself */
1299 if (inta & CSR_INT_BIT_CT_KILL) {
1300 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1301 priv->isr_stats.ctkill++;
1302 handled |= CSR_INT_BIT_CT_KILL;
1303 }
1304
1305 /* Error detected by uCode */
1306 if (inta & CSR_INT_BIT_SW_ERR) {
1307 IWL_ERR(priv, "Microcode SW error detected. "
1308 " Restarting 0x%X.\n", inta);
1309 priv->isr_stats.sw++;
Mohamed Abbasef850d72009-05-22 11:01:50 -07001310 iwl_irq_handle_error(priv);
1311 handled |= CSR_INT_BIT_SW_ERR;
1312 }
1313
1314 /* uCode wakes up after power-down sleep */
1315 if (inta & CSR_INT_BIT_WAKEUP) {
1316 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
1317 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
Ben Cahill87569902009-11-06 14:53:01 -08001318 for (i = 0; i < priv->hw_params.max_txq_num; i++)
1319 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
Mohamed Abbasef850d72009-05-22 11:01:50 -07001320
1321 priv->isr_stats.wakeup++;
1322
1323 handled |= CSR_INT_BIT_WAKEUP;
1324 }
1325
1326 /* All uCode command responses, including Tx command responses,
1327 * Rx "responses" (frame-received notification), and other
1328 * notifications from uCode come through here*/
Mohamed Abbas40cefda2009-05-22 11:01:52 -07001329 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
1330 CSR_INT_BIT_RX_PERIODIC)) {
Mohamed Abbasef850d72009-05-22 11:01:50 -07001331 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
Mohamed Abbas40cefda2009-05-22 11:01:52 -07001332 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1333 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1334 iwl_write32(priv, CSR_FH_INT_STATUS,
1335 CSR49_FH_INT_RX_MASK);
1336 }
1337 if (inta & CSR_INT_BIT_RX_PERIODIC) {
1338 handled |= CSR_INT_BIT_RX_PERIODIC;
1339 iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
1340 }
1341 /* Sending RX interrupt require many steps to be done in the
1342 * the device:
1343 * 1- write interrupt to current index in ICT table.
1344 * 2- dma RX frame.
1345 * 3- update RX shared data to indicate last write index.
1346 * 4- send interrupt.
1347 * This could lead to RX race, driver could receive RX interrupt
Ben Cahill74ba67e2009-11-20 12:04:53 -08001348 * but the shared data changes does not reflect this;
1349 * periodic interrupt will detect any dangling Rx activity.
Mohamed Abbas40cefda2009-05-22 11:01:52 -07001350 */
Ben Cahill74ba67e2009-11-20 12:04:53 -08001351
1352 /* Disable periodic interrupt; we use it as just a one-shot. */
1353 iwl_write8(priv, CSR_INT_PERIODIC_REG,
Mohamed Abbas40cefda2009-05-22 11:01:52 -07001354 CSR_INT_PERIODIC_DIS);
Mohamed Abbasef850d72009-05-22 11:01:50 -07001355 iwl_rx_handle(priv);
Ben Cahill74ba67e2009-11-20 12:04:53 -08001356
1357 /*
1358 * Enable periodic interrupt in 8 msec only if we received
1359 * real RX interrupt (instead of just periodic int), to catch
1360 * any dangling Rx interrupt. If it was just the periodic
1361 * interrupt, there was no dangling Rx activity, and no need
1362 * to extend the periodic interrupt; one-shot is enough.
1363 */
Mohamed Abbas40cefda2009-05-22 11:01:52 -07001364 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
Ben Cahill74ba67e2009-11-20 12:04:53 -08001365 iwl_write8(priv, CSR_INT_PERIODIC_REG,
Mohamed Abbas40cefda2009-05-22 11:01:52 -07001366 CSR_INT_PERIODIC_ENA);
1367
Mohamed Abbasef850d72009-05-22 11:01:50 -07001368 priv->isr_stats.rx++;
Mohamed Abbasef850d72009-05-22 11:01:50 -07001369 }
1370
Ben Cahillc72cd192009-10-30 14:36:08 -07001371 /* This "Tx" DMA channel is used only for loading uCode */
Mohamed Abbasef850d72009-05-22 11:01:50 -07001372 if (inta & CSR_INT_BIT_FH_TX) {
1373 iwl_write32(priv, CSR_FH_INT_STATUS, CSR49_FH_INT_TX_MASK);
Ben Cahillc72cd192009-10-30 14:36:08 -07001374 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
Mohamed Abbasef850d72009-05-22 11:01:50 -07001375 priv->isr_stats.tx++;
1376 handled |= CSR_INT_BIT_FH_TX;
Ben Cahillc72cd192009-10-30 14:36:08 -07001377 /* Wake up uCode load routine, now that load is complete */
Mohamed Abbasef850d72009-05-22 11:01:50 -07001378 priv->ucode_write_complete = 1;
1379 wake_up_interruptible(&priv->wait_command_queue);
1380 }
1381
1382 if (inta & ~handled) {
1383 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1384 priv->isr_stats.unhandled++;
1385 }
1386
Mohamed Abbas40cefda2009-05-22 11:01:52 -07001387 if (inta & ~(priv->inta_mask)) {
Mohamed Abbasef850d72009-05-22 11:01:50 -07001388 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
Mohamed Abbas40cefda2009-05-22 11:01:52 -07001389 inta & ~priv->inta_mask);
Mohamed Abbasef850d72009-05-22 11:01:50 -07001390 }
1391
Mohamed Abbasef850d72009-05-22 11:01:50 -07001392 /* Re-enable all interrupts */
Justin P. Mattock62e45c12010-12-30 15:07:56 -08001393 /* only Re-enable if disabled by irq */
Mohamed Abbasef850d72009-05-22 11:01:50 -07001394 if (test_bit(STATUS_INT_ENABLED, &priv->status))
1395 iwl_enable_interrupts(priv);
Mohamed Abbasef850d72009-05-22 11:01:50 -07001396}
1397
Wey-Yi Guy872c8dd2010-03-16 10:46:31 -07001398/* the threshold ratio of actual_ack_cnt to expected_ack_cnt in percent */
1399#define ACK_CNT_RATIO (50)
1400#define BA_TIMEOUT_CNT (5)
1401#define BA_TIMEOUT_MAX (16)
1402
1403/**
1404 * iwl_good_ack_health - checks for ACK count ratios, BA timeout retries.
1405 *
1406 * When the ACK count ratio is 0 and aggregated BA timeout retries exceeding
1407 * the BA_TIMEOUT_MAX, reload firmware and bring system back to normal
1408 * operation state.
1409 */
1410bool iwl_good_ack_health(struct iwl_priv *priv,
1411 struct iwl_rx_packet *pkt)
1412{
1413 bool rc = true;
1414 int actual_ack_cnt_delta, expected_ack_cnt_delta;
1415 int ba_timeout_delta;
1416
1417 actual_ack_cnt_delta =
1418 le32_to_cpu(pkt->u.stats.tx.actual_ack_cnt) -
Wey-Yi Guyf3aebee2010-06-14 17:09:54 -07001419 le32_to_cpu(priv->_agn.statistics.tx.actual_ack_cnt);
Wey-Yi Guy872c8dd2010-03-16 10:46:31 -07001420 expected_ack_cnt_delta =
1421 le32_to_cpu(pkt->u.stats.tx.expected_ack_cnt) -
Wey-Yi Guyf3aebee2010-06-14 17:09:54 -07001422 le32_to_cpu(priv->_agn.statistics.tx.expected_ack_cnt);
Wey-Yi Guy872c8dd2010-03-16 10:46:31 -07001423 ba_timeout_delta =
1424 le32_to_cpu(pkt->u.stats.tx.agg.ba_timeout) -
Wey-Yi Guyf3aebee2010-06-14 17:09:54 -07001425 le32_to_cpu(priv->_agn.statistics.tx.agg.ba_timeout);
Wey-Yi Guy872c8dd2010-03-16 10:46:31 -07001426 if ((priv->_agn.agg_tids_count > 0) &&
1427 (expected_ack_cnt_delta > 0) &&
1428 (((actual_ack_cnt_delta * 100) / expected_ack_cnt_delta)
1429 < ACK_CNT_RATIO) &&
1430 (ba_timeout_delta > BA_TIMEOUT_CNT)) {
1431 IWL_DEBUG_RADIO(priv, "actual_ack_cnt delta = %d,"
1432 " expected_ack_cnt = %d\n",
1433 actual_ack_cnt_delta, expected_ack_cnt_delta);
1434
Johannes Bergd73e4922010-05-06 12:18:41 -07001435#ifdef CONFIG_IWLWIFI_DEBUGFS
1436 /*
1437 * This is ifdef'ed on DEBUGFS because otherwise the
1438 * statistics aren't available. If DEBUGFS is set but
1439 * DEBUG is not, these will just compile out.
1440 */
Wey-Yi Guy872c8dd2010-03-16 10:46:31 -07001441 IWL_DEBUG_RADIO(priv, "rx_detected_cnt delta = %d\n",
Wey-Yi Guyf3aebee2010-06-14 17:09:54 -07001442 priv->_agn.delta_statistics.tx.rx_detected_cnt);
Wey-Yi Guy872c8dd2010-03-16 10:46:31 -07001443 IWL_DEBUG_RADIO(priv,
1444 "ack_or_ba_timeout_collision delta = %d\n",
Wey-Yi Guyf3aebee2010-06-14 17:09:54 -07001445 priv->_agn.delta_statistics.tx.
Wey-Yi Guy872c8dd2010-03-16 10:46:31 -07001446 ack_or_ba_timeout_collision);
1447#endif
1448 IWL_DEBUG_RADIO(priv, "agg ba_timeout delta = %d\n",
1449 ba_timeout_delta);
1450 if (!actual_ack_cnt_delta &&
1451 (ba_timeout_delta >= BA_TIMEOUT_MAX))
1452 rc = false;
1453 }
1454 return rc;
1455}
1456
Wey-Yi Guya83b9142009-04-08 11:39:32 -07001457
Emmanuel Grumbach7d476182010-05-23 00:14:08 -07001458/*****************************************************************************
1459 *
1460 * sysfs attributes
1461 *
1462 *****************************************************************************/
1463
1464#ifdef CONFIG_IWLWIFI_DEBUG
1465
1466/*
1467 * The following adds a new attribute to the sysfs representation
1468 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
1469 * used for controlling the debug level.
1470 *
1471 * See the level definitions in iwl for details.
1472 *
1473 * The debug_level being managed using sysfs below is a per device debug
1474 * level that is used instead of the global debug level if it (the per
1475 * device debug level) is set.
1476 */
1477static ssize_t show_debug_level(struct device *d,
1478 struct device_attribute *attr, char *buf)
1479{
1480 struct iwl_priv *priv = dev_get_drvdata(d);
1481 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
1482}
1483static ssize_t store_debug_level(struct device *d,
1484 struct device_attribute *attr,
1485 const char *buf, size_t count)
1486{
1487 struct iwl_priv *priv = dev_get_drvdata(d);
1488 unsigned long val;
1489 int ret;
1490
1491 ret = strict_strtoul(buf, 0, &val);
1492 if (ret)
1493 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
1494 else {
1495 priv->debug_level = val;
1496 if (iwl_alloc_traffic_mem(priv))
1497 IWL_ERR(priv,
1498 "Not enough memory to generate traffic log\n");
1499 }
1500 return strnlen(buf, count);
1501}
1502
1503static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1504 show_debug_level, store_debug_level);
1505
1506
1507#endif /* CONFIG_IWLWIFI_DEBUG */
1508
1509
1510static ssize_t show_temperature(struct device *d,
1511 struct device_attribute *attr, char *buf)
1512{
1513 struct iwl_priv *priv = dev_get_drvdata(d);
1514
1515 if (!iwl_is_alive(priv))
1516 return -EAGAIN;
1517
1518 return sprintf(buf, "%d\n", priv->temperature);
1519}
1520
1521static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
1522
1523static ssize_t show_tx_power(struct device *d,
1524 struct device_attribute *attr, char *buf)
1525{
1526 struct iwl_priv *priv = dev_get_drvdata(d);
1527
1528 if (!iwl_is_ready_rf(priv))
1529 return sprintf(buf, "off\n");
1530 else
1531 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
1532}
1533
1534static ssize_t store_tx_power(struct device *d,
1535 struct device_attribute *attr,
1536 const char *buf, size_t count)
1537{
1538 struct iwl_priv *priv = dev_get_drvdata(d);
1539 unsigned long val;
1540 int ret;
1541
1542 ret = strict_strtoul(buf, 10, &val);
1543 if (ret)
1544 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
1545 else {
1546 ret = iwl_set_tx_power(priv, val, false);
1547 if (ret)
1548 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
1549 ret);
1550 else
1551 ret = count;
1552 }
1553 return ret;
1554}
1555
1556static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
1557
Emmanuel Grumbach7d476182010-05-23 00:14:08 -07001558static struct attribute *iwl_sysfs_entries[] = {
1559 &dev_attr_temperature.attr,
1560 &dev_attr_tx_power.attr,
Emmanuel Grumbach7d476182010-05-23 00:14:08 -07001561#ifdef CONFIG_IWLWIFI_DEBUG
1562 &dev_attr_debug_level.attr,
1563#endif
1564 NULL
1565};
1566
1567static struct attribute_group iwl_attribute_group = {
1568 .name = NULL, /* put in device directory */
1569 .attrs = iwl_sysfs_entries,
1570};
1571
Zhu Yib481de92007-09-25 17:54:57 -07001572/******************************************************************************
1573 *
1574 * uCode download functions
1575 *
1576 ******************************************************************************/
1577
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001578static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07001579{
Tomas Winkler98c92212008-01-14 17:46:20 -08001580 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1581 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1582 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1583 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1584 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1585 iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
Zhu Yib481de92007-09-25 17:54:57 -07001586}
1587
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07001588static void iwl_nic_start(struct iwl_priv *priv)
Ron Rindjunskyedcdf8b2008-05-15 13:53:55 +08001589{
1590 /* Remove all resets to allow NIC to operate */
1591 iwl_write32(priv, CSR_RESET, 0);
1592}
1593
Johannes Bergdd7a2502010-04-28 23:33:10 -07001594struct iwlagn_ucode_capabilities {
1595 u32 max_probe_length;
Wey-Yi Guy6a822d02010-07-13 17:13:15 -07001596 u32 standard_phy_calibration_size;
Johannes Bergece9c4e2010-08-23 10:46:49 +02001597 bool pan;
Johannes Bergdd7a2502010-04-28 23:33:10 -07001598};
Ron Rindjunskyedcdf8b2008-05-15 13:53:55 +08001599
Johannes Bergb08dfd02010-01-29 11:54:56 -08001600static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
Johannes Bergdd7a2502010-04-28 23:33:10 -07001601static int iwl_mac_setup_register(struct iwl_priv *priv,
1602 struct iwlagn_ucode_capabilities *capa);
Johannes Bergb08dfd02010-01-29 11:54:56 -08001603
Jay Sternberg39396082010-08-12 10:24:07 -07001604#define UCODE_EXPERIMENTAL_INDEX 100
1605#define UCODE_EXPERIMENTAL_TAG "exp"
1606
Johannes Bergb08dfd02010-01-29 11:54:56 -08001607static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
Zhu Yib481de92007-09-25 17:54:57 -07001608{
Reinette Chatrea0987a82008-12-02 12:14:06 -08001609 const char *name_pre = priv->cfg->fw_name_pre;
Jay Sternberg39396082010-08-12 10:24:07 -07001610 char tag[8];
Johannes Bergb08dfd02010-01-29 11:54:56 -08001611
Jay Sternberg39396082010-08-12 10:24:07 -07001612 if (first) {
1613#ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
1614 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
1615 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
1616 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
1617#endif
Johannes Bergb08dfd02010-01-29 11:54:56 -08001618 priv->fw_index = priv->cfg->ucode_api_max;
Jay Sternberg39396082010-08-12 10:24:07 -07001619 sprintf(tag, "%d", priv->fw_index);
1620 } else {
Johannes Bergb08dfd02010-01-29 11:54:56 -08001621 priv->fw_index--;
Jay Sternberg39396082010-08-12 10:24:07 -07001622 sprintf(tag, "%d", priv->fw_index);
1623 }
Johannes Bergb08dfd02010-01-29 11:54:56 -08001624
1625 if (priv->fw_index < priv->cfg->ucode_api_min) {
1626 IWL_ERR(priv, "no suitable firmware found!\n");
1627 return -ENOENT;
1628 }
1629
Jay Sternberg39396082010-08-12 10:24:07 -07001630 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
Johannes Bergb08dfd02010-01-29 11:54:56 -08001631
Jay Sternberg39396082010-08-12 10:24:07 -07001632 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
1633 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1634 ? "EXPERIMENTAL " : "",
Johannes Bergb08dfd02010-01-29 11:54:56 -08001635 priv->firmware_name);
1636
1637 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1638 &priv->pci_dev->dev, GFP_KERNEL, priv,
1639 iwl_ucode_callback);
1640}
1641
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001642struct iwlagn_firmware_pieces {
1643 const void *inst, *data, *init, *init_data, *boot;
1644 size_t inst_size, data_size, init_size, init_data_size, boot_size;
1645
1646 u32 build;
Johannes Bergb2e640d2010-05-05 23:24:54 -07001647
1648 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1649 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001650};
1651
1652static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
1653 const struct firmware *ucode_raw,
1654 struct iwlagn_firmware_pieces *pieces)
1655{
1656 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
1657 u32 api_ver, hdr_size;
1658 const u8 *src;
1659
1660 priv->ucode_ver = le32_to_cpu(ucode->ver);
1661 api_ver = IWL_UCODE_API(priv->ucode_ver);
1662
1663 switch (api_ver) {
1664 default:
1665 /*
1666 * 4965 doesn't revision the firmware file format
1667 * along with the API version, it always uses v1
1668 * file format.
1669 */
1670 if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) !=
1671 CSR_HW_REV_TYPE_4965) {
1672 hdr_size = 28;
1673 if (ucode_raw->size < hdr_size) {
1674 IWL_ERR(priv, "File size too small!\n");
1675 return -EINVAL;
1676 }
1677 pieces->build = le32_to_cpu(ucode->u.v2.build);
1678 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
1679 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
1680 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
1681 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
1682 pieces->boot_size = le32_to_cpu(ucode->u.v2.boot_size);
1683 src = ucode->u.v2.data;
1684 break;
1685 }
1686 /* fall through for 4965 */
1687 case 0:
1688 case 1:
1689 case 2:
1690 hdr_size = 24;
1691 if (ucode_raw->size < hdr_size) {
1692 IWL_ERR(priv, "File size too small!\n");
1693 return -EINVAL;
1694 }
1695 pieces->build = 0;
1696 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
1697 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
1698 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
1699 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
1700 pieces->boot_size = le32_to_cpu(ucode->u.v1.boot_size);
1701 src = ucode->u.v1.data;
1702 break;
1703 }
1704
1705 /* Verify size of file vs. image size info in file's header */
1706 if (ucode_raw->size != hdr_size + pieces->inst_size +
1707 pieces->data_size + pieces->init_size +
1708 pieces->init_data_size + pieces->boot_size) {
1709
1710 IWL_ERR(priv,
1711 "uCode file size %d does not match expected size\n",
1712 (int)ucode_raw->size);
1713 return -EINVAL;
1714 }
1715
1716 pieces->inst = src;
1717 src += pieces->inst_size;
1718 pieces->data = src;
1719 src += pieces->data_size;
1720 pieces->init = src;
1721 src += pieces->init_size;
1722 pieces->init_data = src;
1723 src += pieces->init_data_size;
1724 pieces->boot = src;
1725 src += pieces->boot_size;
1726
1727 return 0;
1728}
1729
Johannes Bergdd7a2502010-04-28 23:33:10 -07001730static int iwlagn_wanted_ucode_alternative = 1;
1731
1732static int iwlagn_load_firmware(struct iwl_priv *priv,
1733 const struct firmware *ucode_raw,
1734 struct iwlagn_firmware_pieces *pieces,
1735 struct iwlagn_ucode_capabilities *capa)
1736{
1737 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
1738 struct iwl_ucode_tlv *tlv;
1739 size_t len = ucode_raw->size;
1740 const u8 *data;
1741 int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
1742 u64 alternatives;
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001743 u32 tlv_len;
1744 enum iwl_ucode_tlv_type tlv_type;
1745 const u8 *tlv_data;
Johannes Bergdd7a2502010-04-28 23:33:10 -07001746
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001747 if (len < sizeof(*ucode)) {
1748 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
Johannes Bergdd7a2502010-04-28 23:33:10 -07001749 return -EINVAL;
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001750 }
Johannes Bergdd7a2502010-04-28 23:33:10 -07001751
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001752 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
1753 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
1754 le32_to_cpu(ucode->magic));
Johannes Bergdd7a2502010-04-28 23:33:10 -07001755 return -EINVAL;
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001756 }
Johannes Bergdd7a2502010-04-28 23:33:10 -07001757
1758 /*
1759 * Check which alternatives are present, and "downgrade"
1760 * when the chosen alternative is not present, warning
1761 * the user when that happens. Some files may not have
1762 * any alternatives, so don't warn in that case.
1763 */
1764 alternatives = le64_to_cpu(ucode->alternatives);
1765 tmp = wanted_alternative;
1766 if (wanted_alternative > 63)
1767 wanted_alternative = 63;
1768 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
1769 wanted_alternative--;
1770 if (wanted_alternative && wanted_alternative != tmp)
1771 IWL_WARN(priv,
1772 "uCode alternative %d not available, choosing %d\n",
1773 tmp, wanted_alternative);
1774
1775 priv->ucode_ver = le32_to_cpu(ucode->ver);
1776 pieces->build = le32_to_cpu(ucode->build);
1777 data = ucode->data;
1778
1779 len -= sizeof(*ucode);
1780
Johannes Berg704da532010-07-14 09:34:50 -07001781 while (len >= sizeof(*tlv)) {
Johannes Bergdd7a2502010-04-28 23:33:10 -07001782 u16 tlv_alt;
Johannes Bergdd7a2502010-04-28 23:33:10 -07001783
1784 len -= sizeof(*tlv);
1785 tlv = (void *)data;
1786
1787 tlv_len = le32_to_cpu(tlv->length);
1788 tlv_type = le16_to_cpu(tlv->type);
1789 tlv_alt = le16_to_cpu(tlv->alternative);
1790 tlv_data = tlv->data;
1791
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001792 if (len < tlv_len) {
1793 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
1794 len, tlv_len);
Johannes Bergdd7a2502010-04-28 23:33:10 -07001795 return -EINVAL;
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001796 }
Johannes Bergdd7a2502010-04-28 23:33:10 -07001797 len -= ALIGN(tlv_len, 4);
1798 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
1799
1800 /*
1801 * Alternative 0 is always valid.
1802 *
1803 * Skip alternative TLVs that are not selected.
1804 */
1805 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
1806 continue;
1807
1808 switch (tlv_type) {
1809 case IWL_UCODE_TLV_INST:
1810 pieces->inst = tlv_data;
1811 pieces->inst_size = tlv_len;
1812 break;
1813 case IWL_UCODE_TLV_DATA:
1814 pieces->data = tlv_data;
1815 pieces->data_size = tlv_len;
1816 break;
1817 case IWL_UCODE_TLV_INIT:
1818 pieces->init = tlv_data;
1819 pieces->init_size = tlv_len;
1820 break;
1821 case IWL_UCODE_TLV_INIT_DATA:
1822 pieces->init_data = tlv_data;
1823 pieces->init_data_size = tlv_len;
1824 break;
1825 case IWL_UCODE_TLV_BOOT:
1826 pieces->boot = tlv_data;
1827 pieces->boot_size = tlv_len;
1828 break;
1829 case IWL_UCODE_TLV_PROBE_MAX_LEN:
Johannes Berg704da532010-07-14 09:34:50 -07001830 if (tlv_len != sizeof(u32))
1831 goto invalid_tlv_len;
1832 capa->max_probe_length =
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001833 le32_to_cpup((__le32 *)tlv_data);
Johannes Bergdd7a2502010-04-28 23:33:10 -07001834 break;
Johannes Bergece9c4e2010-08-23 10:46:49 +02001835 case IWL_UCODE_TLV_PAN:
1836 if (tlv_len)
1837 goto invalid_tlv_len;
1838 capa->pan = true;
1839 break;
Johannes Bergb2e640d2010-05-05 23:24:54 -07001840 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
Johannes Berg704da532010-07-14 09:34:50 -07001841 if (tlv_len != sizeof(u32))
1842 goto invalid_tlv_len;
1843 pieces->init_evtlog_ptr =
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001844 le32_to_cpup((__le32 *)tlv_data);
Johannes Bergb2e640d2010-05-05 23:24:54 -07001845 break;
1846 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
Johannes Berg704da532010-07-14 09:34:50 -07001847 if (tlv_len != sizeof(u32))
1848 goto invalid_tlv_len;
1849 pieces->init_evtlog_size =
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001850 le32_to_cpup((__le32 *)tlv_data);
Johannes Bergb2e640d2010-05-05 23:24:54 -07001851 break;
1852 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
Johannes Berg704da532010-07-14 09:34:50 -07001853 if (tlv_len != sizeof(u32))
1854 goto invalid_tlv_len;
1855 pieces->init_errlog_ptr =
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001856 le32_to_cpup((__le32 *)tlv_data);
Johannes Bergb2e640d2010-05-05 23:24:54 -07001857 break;
1858 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
Johannes Berg704da532010-07-14 09:34:50 -07001859 if (tlv_len != sizeof(u32))
1860 goto invalid_tlv_len;
1861 pieces->inst_evtlog_ptr =
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001862 le32_to_cpup((__le32 *)tlv_data);
Johannes Bergb2e640d2010-05-05 23:24:54 -07001863 break;
1864 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
Johannes Berg704da532010-07-14 09:34:50 -07001865 if (tlv_len != sizeof(u32))
1866 goto invalid_tlv_len;
1867 pieces->inst_evtlog_size =
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001868 le32_to_cpup((__le32 *)tlv_data);
Johannes Bergb2e640d2010-05-05 23:24:54 -07001869 break;
1870 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
Johannes Berg704da532010-07-14 09:34:50 -07001871 if (tlv_len != sizeof(u32))
1872 goto invalid_tlv_len;
1873 pieces->inst_errlog_ptr =
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001874 le32_to_cpup((__le32 *)tlv_data);
Johannes Bergb2e640d2010-05-05 23:24:54 -07001875 break;
Wey-Yi Guyc8312fa2010-06-28 13:05:17 -07001876 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
1877 if (tlv_len)
Johannes Berg704da532010-07-14 09:34:50 -07001878 goto invalid_tlv_len;
1879 priv->enhance_sensitivity_table = true;
Wey-Yi Guyc8312fa2010-06-28 13:05:17 -07001880 break;
Wey-Yi Guy6a822d02010-07-13 17:13:15 -07001881 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
Johannes Berg704da532010-07-14 09:34:50 -07001882 if (tlv_len != sizeof(u32))
1883 goto invalid_tlv_len;
1884 capa->standard_phy_calibration_size =
Wey-Yi Guy6a822d02010-07-13 17:13:15 -07001885 le32_to_cpup((__le32 *)tlv_data);
1886 break;
Johannes Bergdd7a2502010-04-28 23:33:10 -07001887 default:
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001888 IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
Johannes Bergdd7a2502010-04-28 23:33:10 -07001889 break;
1890 }
1891 }
1892
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001893 if (len) {
1894 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
1895 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
Johannes Berg704da532010-07-14 09:34:50 -07001896 return -EINVAL;
Wey-Yi Guyad8d8332010-06-22 14:31:45 -07001897 }
Johannes Bergdd7a2502010-04-28 23:33:10 -07001898
Johannes Berg704da532010-07-14 09:34:50 -07001899 return 0;
1900
1901 invalid_tlv_len:
1902 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1903 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
1904
1905 return -EINVAL;
Johannes Bergdd7a2502010-04-28 23:33:10 -07001906}
1907
Johannes Bergb08dfd02010-01-29 11:54:56 -08001908/**
1909 * iwl_ucode_callback - callback when firmware was loaded
1910 *
1911 * If loaded successfully, copies the firmware into buffers
1912 * for the card to fetch (via DMA).
1913 */
1914static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1915{
1916 struct iwl_priv *priv = context;
1917 struct iwl_ucode_header *ucode;
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001918 int err;
1919 struct iwlagn_firmware_pieces pieces;
Reinette Chatrea0987a82008-12-02 12:14:06 -08001920 const unsigned int api_max = priv->cfg->ucode_api_max;
1921 const unsigned int api_min = priv->cfg->ucode_api_min;
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001922 u32 api_ver;
Johannes Berg3e4de762010-04-28 12:09:12 -07001923 char buildstr[25];
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001924 u32 build;
Johannes Bergdd7a2502010-04-28 23:33:10 -07001925 struct iwlagn_ucode_capabilities ucode_capa = {
1926 .max_probe_length = 200,
Wey-Yi Guy6a822d02010-07-13 17:13:15 -07001927 .standard_phy_calibration_size =
Shanyu Zhao642454c2010-09-21 12:06:18 -07001928 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
Johannes Bergdd7a2502010-04-28 23:33:10 -07001929 };
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001930
1931 memset(&pieces, 0, sizeof(pieces));
Zhu Yib481de92007-09-25 17:54:57 -07001932
Johannes Bergb08dfd02010-01-29 11:54:56 -08001933 if (!ucode_raw) {
Jay Sternberg39396082010-08-12 10:24:07 -07001934 if (priv->fw_index <= priv->cfg->ucode_api_max)
1935 IWL_ERR(priv,
1936 "request for firmware file '%s' failed.\n",
1937 priv->firmware_name);
Johannes Bergb08dfd02010-01-29 11:54:56 -08001938 goto try_again;
Zhu Yib481de92007-09-25 17:54:57 -07001939 }
1940
Johannes Bergb08dfd02010-01-29 11:54:56 -08001941 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1942 priv->firmware_name, ucode_raw->size);
Zhu Yib481de92007-09-25 17:54:57 -07001943
Johannes Berg22adba22010-04-28 12:09:14 -07001944 /* Make sure that we got at least the API version number */
1945 if (ucode_raw->size < 4) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08001946 IWL_ERR(priv, "File size way too small!\n");
Johannes Bergb08dfd02010-01-29 11:54:56 -08001947 goto try_again;
Zhu Yib481de92007-09-25 17:54:57 -07001948 }
1949
1950 /* Data from ucode file: header followed by uCode images */
Jay Sternbergcc0f5552009-07-17 09:30:16 -07001951 ucode = (struct iwl_ucode_header *)ucode_raw->data;
Zhu Yib481de92007-09-25 17:54:57 -07001952
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001953 if (ucode->ver)
1954 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1955 else
Johannes Bergdd7a2502010-04-28 23:33:10 -07001956 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1957 &ucode_capa);
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001958
1959 if (err)
1960 goto try_again;
1961
Reinette Chatrea0987a82008-12-02 12:14:06 -08001962 api_ver = IWL_UCODE_API(priv->ucode_ver);
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001963 build = pieces.build;
Zhu Yib481de92007-09-25 17:54:57 -07001964
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001965 /*
1966 * api_ver should match the api version forming part of the
Reinette Chatrea0987a82008-12-02 12:14:06 -08001967 * firmware filename ... but we don't check for that and only rely
Johannes Berg0e9a44d2010-04-28 12:09:16 -07001968 * on the API version read from firmware header from here on forward
1969 */
Wey-Yi Guy65cccfb2010-09-21 16:15:58 -07001970 /* no api version check required for experimental uCode */
1971 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1972 if (api_ver < api_min || api_ver > api_max) {
1973 IWL_ERR(priv,
1974 "Driver unable to support your firmware API. "
1975 "Driver supports v%u, firmware is v%u.\n",
1976 api_max, api_ver);
1977 goto try_again;
1978 }
Johannes Bergb08dfd02010-01-29 11:54:56 -08001979
Wey-Yi Guy65cccfb2010-09-21 16:15:58 -07001980 if (api_ver != api_max)
1981 IWL_ERR(priv,
1982 "Firmware has old API version. Expected v%u, "
1983 "got v%u. New firmware can be obtained "
1984 "from http://www.intellinuxwireless.org.\n",
1985 api_max, api_ver);
1986 }
Reinette Chatrea0987a82008-12-02 12:14:06 -08001987
Johannes Berg3e4de762010-04-28 12:09:12 -07001988 if (build)
Jay Sternberg39396082010-08-12 10:24:07 -07001989 sprintf(buildstr, " build %u%s", build,
1990 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1991 ? " (EXP)" : "");
Johannes Berg3e4de762010-04-28 12:09:12 -07001992 else
1993 buildstr[0] = '\0';
Reinette Chatrea0987a82008-12-02 12:14:06 -08001994
Johannes Berg3e4de762010-04-28 12:09:12 -07001995 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
Reinette Chatre5ebeb5a2009-10-30 14:36:04 -07001996 IWL_UCODE_MAJOR(priv->ucode_ver),
1997 IWL_UCODE_MINOR(priv->ucode_ver),
1998 IWL_UCODE_API(priv->ucode_ver),
Johannes Berg3e4de762010-04-28 12:09:12 -07001999 IWL_UCODE_SERIAL(priv->ucode_ver),
2000 buildstr);
Reinette Chatre5ebeb5a2009-10-30 14:36:04 -07002001
Johannes Berg3e4de762010-04-28 12:09:12 -07002002 snprintf(priv->hw->wiphy->fw_version,
2003 sizeof(priv->hw->wiphy->fw_version),
2004 "%u.%u.%u.%u%s",
2005 IWL_UCODE_MAJOR(priv->ucode_ver),
2006 IWL_UCODE_MINOR(priv->ucode_ver),
2007 IWL_UCODE_API(priv->ucode_ver),
2008 IWL_UCODE_SERIAL(priv->ucode_ver),
2009 buildstr);
Zhu Yib481de92007-09-25 17:54:57 -07002010
Johannes Bergb08dfd02010-01-29 11:54:56 -08002011 /*
2012 * For any of the failures below (before allocating pci memory)
2013 * we will try to load a version with a smaller API -- maybe the
2014 * user just got a corrupted version of the latest API.
2015 */
2016
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002017 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
2018 priv->ucode_ver);
2019 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
2020 pieces.inst_size);
2021 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
2022 pieces.data_size);
2023 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
2024 pieces.init_size);
2025 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
2026 pieces.init_data_size);
2027 IWL_DEBUG_INFO(priv, "f/w package hdr boot inst size = %Zd\n",
2028 pieces.boot_size);
Zhu Yib481de92007-09-25 17:54:57 -07002029
2030 /* Verify that uCode images will fit in card's SRAM */
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002031 if (pieces.inst_size > priv->hw_params.max_inst_size) {
2032 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
2033 pieces.inst_size);
Johannes Bergb08dfd02010-01-29 11:54:56 -08002034 goto try_again;
Zhu Yib481de92007-09-25 17:54:57 -07002035 }
2036
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002037 if (pieces.data_size > priv->hw_params.max_data_size) {
2038 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
2039 pieces.data_size);
Johannes Bergb08dfd02010-01-29 11:54:56 -08002040 goto try_again;
Zhu Yib481de92007-09-25 17:54:57 -07002041 }
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002042
2043 if (pieces.init_size > priv->hw_params.max_inst_size) {
2044 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
2045 pieces.init_size);
Johannes Bergb08dfd02010-01-29 11:54:56 -08002046 goto try_again;
Zhu Yib481de92007-09-25 17:54:57 -07002047 }
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002048
2049 if (pieces.init_data_size > priv->hw_params.max_data_size) {
2050 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
2051 pieces.init_data_size);
Johannes Bergb08dfd02010-01-29 11:54:56 -08002052 goto try_again;
Zhu Yib481de92007-09-25 17:54:57 -07002053 }
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002054
2055 if (pieces.boot_size > priv->hw_params.max_bsm_size) {
2056 IWL_ERR(priv, "uCode boot instr len %Zd too large to fit in\n",
2057 pieces.boot_size);
Johannes Bergb08dfd02010-01-29 11:54:56 -08002058 goto try_again;
Zhu Yib481de92007-09-25 17:54:57 -07002059 }
2060
2061 /* Allocate ucode buffers for card's bus-master loading ... */
2062
2063 /* Runtime instructions and 2 copies of data:
2064 * 1) unmodified from disk
2065 * 2) backup cache for save/restore during power-downs */
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002066 priv->ucode_code.len = pieces.inst_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08002067 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
Zhu Yib481de92007-09-25 17:54:57 -07002068
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002069 priv->ucode_data.len = pieces.data_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08002070 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
Zhu Yib481de92007-09-25 17:54:57 -07002071
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002072 priv->ucode_data_backup.len = pieces.data_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08002073 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
Zhu Yib481de92007-09-25 17:54:57 -07002074
Zhu, Yi1f304e42009-01-23 13:45:22 -08002075 if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
2076 !priv->ucode_data_backup.v_addr)
2077 goto err_pci_alloc;
2078
Zhu Yib481de92007-09-25 17:54:57 -07002079 /* Initialization instructions and data */
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002080 if (pieces.init_size && pieces.init_data_size) {
2081 priv->ucode_init.len = pieces.init_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08002082 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
Zhu Yib481de92007-09-25 17:54:57 -07002083
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002084 priv->ucode_init_data.len = pieces.init_data_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08002085 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
Tomas Winkler90e759d2007-11-29 11:09:41 +08002086
2087 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2088 goto err_pci_alloc;
2089 }
Zhu Yib481de92007-09-25 17:54:57 -07002090
2091 /* Bootstrap (instructions only, no data) */
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002092 if (pieces.boot_size) {
2093 priv->ucode_boot.len = pieces.boot_size;
Tomas Winkler98c92212008-01-14 17:46:20 -08002094 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
Zhu Yib481de92007-09-25 17:54:57 -07002095
Tomas Winkler90e759d2007-11-29 11:09:41 +08002096 if (!priv->ucode_boot.v_addr)
2097 goto err_pci_alloc;
2098 }
Zhu Yib481de92007-09-25 17:54:57 -07002099
Johannes Bergb2e640d2010-05-05 23:24:54 -07002100 /* Now that we can no longer fail, copy information */
2101
2102 /*
2103 * The (size - 16) / 12 formula is based on the information recorded
2104 * for each event, which is of mode 1 (including timestamp) for all
2105 * new microcodes that include this information.
2106 */
2107 priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
2108 if (pieces.init_evtlog_size)
2109 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
2110 else
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07002111 priv->_agn.init_evtlog_size =
2112 priv->cfg->base_params->max_event_log_size;
Johannes Bergb2e640d2010-05-05 23:24:54 -07002113 priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
2114 priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
2115 if (pieces.inst_evtlog_size)
2116 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
2117 else
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07002118 priv->_agn.inst_evtlog_size =
2119 priv->cfg->base_params->max_event_log_size;
Johannes Bergb2e640d2010-05-05 23:24:54 -07002120 priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
2121
Johannes Bergece9c4e2010-08-23 10:46:49 +02002122 if (ucode_capa.pan) {
2123 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
Johannes Bergc10afb62010-08-23 10:46:43 +02002124 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
Johannes Bergece9c4e2010-08-23 10:46:49 +02002125 } else
2126 priv->sta_key_max_num = STA_KEY_MAX_NUM;
Johannes Bergc10afb62010-08-23 10:46:43 +02002127
Zhu Yib481de92007-09-25 17:54:57 -07002128 /* Copy images into buffers for card's bus-master reads ... */
2129
2130 /* Runtime instructions (first block of data in file) */
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002131 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode instr len %Zd\n",
2132 pieces.inst_size);
2133 memcpy(priv->ucode_code.v_addr, pieces.inst, pieces.inst_size);
Jay Sternbergcc0f5552009-07-17 09:30:16 -07002134
Tomas Winklere1623442009-01-27 14:27:56 -08002135 IWL_DEBUG_INFO(priv, "uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
Zhu Yib481de92007-09-25 17:54:57 -07002136 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2137
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002138 /*
2139 * Runtime data
2140 * NOTE: Copy into backup buffer will be done in iwl_up()
2141 */
2142 IWL_DEBUG_INFO(priv, "Copying (but not loading) uCode data len %Zd\n",
2143 pieces.data_size);
2144 memcpy(priv->ucode_data.v_addr, pieces.data, pieces.data_size);
2145 memcpy(priv->ucode_data_backup.v_addr, pieces.data, pieces.data_size);
Zhu Yib481de92007-09-25 17:54:57 -07002146
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002147 /* Initialization instructions */
2148 if (pieces.init_size) {
Tomas Winklere1623442009-01-27 14:27:56 -08002149 IWL_DEBUG_INFO(priv, "Copying (but not loading) init instr len %Zd\n",
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002150 pieces.init_size);
2151 memcpy(priv->ucode_init.v_addr, pieces.init, pieces.init_size);
Zhu Yib481de92007-09-25 17:54:57 -07002152 }
2153
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002154 /* Initialization data */
2155 if (pieces.init_data_size) {
Tomas Winklere1623442009-01-27 14:27:56 -08002156 IWL_DEBUG_INFO(priv, "Copying (but not loading) init data len %Zd\n",
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002157 pieces.init_data_size);
2158 memcpy(priv->ucode_init_data.v_addr, pieces.init_data,
2159 pieces.init_data_size);
Zhu Yib481de92007-09-25 17:54:57 -07002160 }
2161
Johannes Berg0e9a44d2010-04-28 12:09:16 -07002162 /* Bootstrap instructions */
2163 IWL_DEBUG_INFO(priv, "Copying (but not loading) boot instr len %Zd\n",
2164 pieces.boot_size);
2165 memcpy(priv->ucode_boot.v_addr, pieces.boot, pieces.boot_size);
Zhu Yib481de92007-09-25 17:54:57 -07002166
Wey-Yi Guy6a822d02010-07-13 17:13:15 -07002167 /*
2168 * figure out the offset of chain noise reset and gain commands
2169 * base on the size of standard phy calibration commands table size
2170 */
2171 if (ucode_capa.standard_phy_calibration_size >
2172 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
2173 ucode_capa.standard_phy_calibration_size =
2174 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
2175
2176 priv->_agn.phy_calib_chain_noise_reset_cmd =
2177 ucode_capa.standard_phy_calibration_size;
2178 priv->_agn.phy_calib_chain_noise_gain_cmd =
2179 ucode_capa.standard_phy_calibration_size + 1;
2180
Johannes Bergb08dfd02010-01-29 11:54:56 -08002181 /**************************************************
2182 * This is still part of probe() in a sense...
2183 *
2184 * 9. Setup and register with mac80211 and debugfs
2185 **************************************************/
Johannes Bergdd7a2502010-04-28 23:33:10 -07002186 err = iwl_mac_setup_register(priv, &ucode_capa);
Johannes Bergb08dfd02010-01-29 11:54:56 -08002187 if (err)
2188 goto out_unbind;
2189
2190 err = iwl_dbgfs_register(priv, DRV_NAME);
2191 if (err)
2192 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
2193
Emmanuel Grumbach7d476182010-05-23 00:14:08 -07002194 err = sysfs_create_group(&priv->pci_dev->dev.kobj,
2195 &iwl_attribute_group);
2196 if (err) {
2197 IWL_ERR(priv, "failed to create sysfs device attributes\n");
2198 goto out_unbind;
2199 }
2200
Zhu Yib481de92007-09-25 17:54:57 -07002201 /* We have our copies now, allow OS release its copies */
2202 release_firmware(ucode_raw);
Reinette Chatrea15707d2010-05-10 15:08:11 -07002203 complete(&priv->_agn.firmware_loading_complete);
Johannes Bergb08dfd02010-01-29 11:54:56 -08002204 return;
2205
2206 try_again:
2207 /* try next, if any */
2208 if (iwl_request_firmware(priv, false))
2209 goto out_unbind;
2210 release_firmware(ucode_raw);
2211 return;
Zhu Yib481de92007-09-25 17:54:57 -07002212
2213 err_pci_alloc:
Winkler, Tomas15b16872008-12-19 10:37:33 +08002214 IWL_ERR(priv, "failed to allocate pci memory\n");
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002215 iwl_dealloc_ucode_pci(priv);
Johannes Bergb08dfd02010-01-29 11:54:56 -08002216 out_unbind:
Reinette Chatrea15707d2010-05-10 15:08:11 -07002217 complete(&priv->_agn.firmware_loading_complete);
Johannes Bergb08dfd02010-01-29 11:54:56 -08002218 device_release_driver(&priv->pci_dev->dev);
Zhu Yib481de92007-09-25 17:54:57 -07002219 release_firmware(ucode_raw);
Zhu Yib481de92007-09-25 17:54:57 -07002220}
2221
Reinette Chatreb7a79402009-09-25 14:24:23 -07002222static const char *desc_lookup_text[] = {
2223 "OK",
2224 "FAIL",
2225 "BAD_PARAM",
2226 "BAD_CHECKSUM",
2227 "NMI_INTERRUPT_WDG",
2228 "SYSASSERT",
2229 "FATAL_ERROR",
2230 "BAD_COMMAND",
2231 "HW_ERROR_TUNE_LOCK",
2232 "HW_ERROR_TEMPERATURE",
2233 "ILLEGAL_CHAN_FREQ",
2234 "VCC_NOT_STABLE",
2235 "FH_ERROR",
2236 "NMI_INTERRUPT_HOST",
2237 "NMI_INTERRUPT_ACTION_PT",
2238 "NMI_INTERRUPT_UNKNOWN",
2239 "UCODE_VERSION_MISMATCH",
2240 "HW_ERROR_ABS_LOCK",
2241 "HW_ERROR_CAL_LOCK_FAIL",
2242 "NMI_INTERRUPT_INST_ACTION_PT",
2243 "NMI_INTERRUPT_DATA_ACTION_PT",
2244 "NMI_TRM_HW_ER",
2245 "NMI_INTERRUPT_TRM",
2246 "NMI_INTERRUPT_BREAK_POINT"
2247 "DEBUG_0",
2248 "DEBUG_1",
2249 "DEBUG_2",
2250 "DEBUG_3",
Reinette Chatreb7a79402009-09-25 14:24:23 -07002251};
2252
Jay Sternberg4b586452010-07-02 15:49:10 -07002253static struct { char *name; u8 num; } advanced_lookup[] = {
2254 { "NMI_INTERRUPT_WDG", 0x34 },
2255 { "SYSASSERT", 0x35 },
2256 { "UCODE_VERSION_MISMATCH", 0x37 },
2257 { "BAD_COMMAND", 0x38 },
2258 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
2259 { "FATAL_ERROR", 0x3D },
2260 { "NMI_TRM_HW_ERR", 0x46 },
2261 { "NMI_INTERRUPT_TRM", 0x4C },
2262 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
2263 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
2264 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
2265 { "NMI_INTERRUPT_HOST", 0x66 },
2266 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
2267 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
2268 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
2269 { "ADVANCED_SYSASSERT", 0 },
2270};
2271
2272static const char *desc_lookup(u32 num)
Reinette Chatreb7a79402009-09-25 14:24:23 -07002273{
Jay Sternberg4b586452010-07-02 15:49:10 -07002274 int i;
2275 int max = ARRAY_SIZE(desc_lookup_text);
Reinette Chatreb7a79402009-09-25 14:24:23 -07002276
Jay Sternberg4b586452010-07-02 15:49:10 -07002277 if (num < max)
2278 return desc_lookup_text[num];
Reinette Chatreb7a79402009-09-25 14:24:23 -07002279
Jay Sternberg4b586452010-07-02 15:49:10 -07002280 max = ARRAY_SIZE(advanced_lookup) - 1;
2281 for (i = 0; i < max; i++) {
2282 if (advanced_lookup[i].num == num)
2283 break;;
2284 }
2285 return advanced_lookup[i].name;
Reinette Chatreb7a79402009-09-25 14:24:23 -07002286}
2287
2288#define ERROR_START_OFFSET (1 * sizeof(u32))
2289#define ERROR_ELEM_SIZE (7 * sizeof(u32))
2290
2291void iwl_dump_nic_error_log(struct iwl_priv *priv)
2292{
2293 u32 data2, line;
2294 u32 desc, time, count, base, data1;
2295 u32 blink1, blink2, ilink1, ilink2;
Wey-Yi Guy461ef382010-03-30 17:57:53 -07002296 u32 pc, hcmd;
Reinette Chatreb7a79402009-09-25 14:24:23 -07002297
Johannes Bergb2e640d2010-05-05 23:24:54 -07002298 if (priv->ucode_type == UCODE_INIT) {
Reinette Chatreb7a79402009-09-25 14:24:23 -07002299 base = le32_to_cpu(priv->card_alive_init.error_event_table_ptr);
Johannes Bergb2e640d2010-05-05 23:24:54 -07002300 if (!base)
2301 base = priv->_agn.init_errlog_ptr;
2302 } else {
Reinette Chatreb7a79402009-09-25 14:24:23 -07002303 base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
Johannes Bergb2e640d2010-05-05 23:24:54 -07002304 if (!base)
2305 base = priv->_agn.inst_errlog_ptr;
2306 }
Reinette Chatreb7a79402009-09-25 14:24:23 -07002307
2308 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
Wey-Yi Guy212fb572009-12-02 12:53:00 -08002309 IWL_ERR(priv,
2310 "Not valid error log pointer 0x%08X for %s uCode\n",
2311 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
Reinette Chatreb7a79402009-09-25 14:24:23 -07002312 return;
2313 }
2314
2315 count = iwl_read_targ_mem(priv, base);
2316
2317 if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2318 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
2319 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
2320 priv->status, count);
2321 }
2322
2323 desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
Wey-Yi Guy6e6ebf42010-08-27 10:41:37 -07002324 priv->isr_stats.err_code = desc;
Wey-Yi Guy461ef382010-03-30 17:57:53 -07002325 pc = iwl_read_targ_mem(priv, base + 2 * sizeof(u32));
Reinette Chatreb7a79402009-09-25 14:24:23 -07002326 blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
2327 blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
2328 ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
2329 ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
2330 data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
2331 data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
2332 line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
2333 time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
Wey-Yi Guy461ef382010-03-30 17:57:53 -07002334 hcmd = iwl_read_targ_mem(priv, base + 22 * sizeof(u32));
Reinette Chatreb7a79402009-09-25 14:24:23 -07002335
Johannes Bergbe1a71a2009-10-02 13:44:02 -07002336 trace_iwlwifi_dev_ucode_error(priv, desc, time, data1, data2, line,
2337 blink1, blink2, ilink1, ilink2);
2338
Jay Sternberg87563712010-06-14 14:40:40 -07002339 IWL_ERR(priv, "Desc Time "
Reinette Chatreb7a79402009-09-25 14:24:23 -07002340 "data1 data2 line\n");
Jay Sternberg87563712010-06-14 14:40:40 -07002341 IWL_ERR(priv, "%-28s (0x%04X) %010u 0x%08X 0x%08X %u\n",
Reinette Chatreb7a79402009-09-25 14:24:23 -07002342 desc_lookup(desc), desc, time, data1, data2, line);
Wey-Yi Guy461ef382010-03-30 17:57:53 -07002343 IWL_ERR(priv, "pc blink1 blink2 ilink1 ilink2 hcmd\n");
2344 IWL_ERR(priv, "0x%05X 0x%05X 0x%05X 0x%05X 0x%05X 0x%05X\n",
2345 pc, blink1, blink2, ilink1, ilink2, hcmd);
Reinette Chatreb7a79402009-09-25 14:24:23 -07002346}
2347
2348#define EVENT_START_OFFSET (4 * sizeof(u32))
2349
2350/**
2351 * iwl_print_event_log - Dump error event log to syslog
2352 *
2353 */
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002354static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
2355 u32 num_events, u32 mode,
2356 int pos, char **buf, size_t bufsz)
Reinette Chatreb7a79402009-09-25 14:24:23 -07002357{
2358 u32 i;
2359 u32 base; /* SRAM byte address of event log header */
2360 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2361 u32 ptr; /* SRAM byte address of log data */
2362 u32 ev, time, data; /* event log data */
Ben Cahille5854472009-11-06 14:52:58 -08002363 unsigned long reg_flags;
Reinette Chatreb7a79402009-09-25 14:24:23 -07002364
2365 if (num_events == 0)
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002366 return pos;
Johannes Bergb2e640d2010-05-05 23:24:54 -07002367
2368 if (priv->ucode_type == UCODE_INIT) {
Reinette Chatreb7a79402009-09-25 14:24:23 -07002369 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
Johannes Bergb2e640d2010-05-05 23:24:54 -07002370 if (!base)
2371 base = priv->_agn.init_evtlog_ptr;
2372 } else {
Reinette Chatreb7a79402009-09-25 14:24:23 -07002373 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
Johannes Bergb2e640d2010-05-05 23:24:54 -07002374 if (!base)
2375 base = priv->_agn.inst_evtlog_ptr;
2376 }
Reinette Chatreb7a79402009-09-25 14:24:23 -07002377
2378 if (mode == 0)
2379 event_size = 2 * sizeof(u32);
2380 else
2381 event_size = 3 * sizeof(u32);
2382
2383 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2384
Ben Cahille5854472009-11-06 14:52:58 -08002385 /* Make sure device is powered up for SRAM reads */
2386 spin_lock_irqsave(&priv->reg_lock, reg_flags);
2387 iwl_grab_nic_access(priv);
2388
2389 /* Set starting address; reads will auto-increment */
2390 _iwl_write_direct32(priv, HBUS_TARG_MEM_RADDR, ptr);
2391 rmb();
2392
Reinette Chatreb7a79402009-09-25 14:24:23 -07002393 /* "time" is actually "data" for mode 0 (no timestamp).
2394 * place event id # at far right for easier visual parsing. */
2395 for (i = 0; i < num_events; i++) {
Ben Cahille5854472009-11-06 14:52:58 -08002396 ev = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
2397 time = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Reinette Chatreb7a79402009-09-25 14:24:23 -07002398 if (mode == 0) {
2399 /* data, ev */
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002400 if (bufsz) {
2401 pos += scnprintf(*buf + pos, bufsz - pos,
2402 "EVT_LOG:0x%08x:%04u\n",
2403 time, ev);
2404 } else {
2405 trace_iwlwifi_dev_ucode_event(priv, 0,
2406 time, ev);
2407 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
2408 time, ev);
2409 }
Reinette Chatreb7a79402009-09-25 14:24:23 -07002410 } else {
Ben Cahille5854472009-11-06 14:52:58 -08002411 data = _iwl_read_direct32(priv, HBUS_TARG_MEM_RDAT);
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002412 if (bufsz) {
2413 pos += scnprintf(*buf + pos, bufsz - pos,
2414 "EVT_LOGT:%010u:0x%08x:%04u\n",
2415 time, data, ev);
2416 } else {
2417 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
Reinette Chatreb7a79402009-09-25 14:24:23 -07002418 time, data, ev);
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002419 trace_iwlwifi_dev_ucode_event(priv, time,
2420 data, ev);
2421 }
Reinette Chatreb7a79402009-09-25 14:24:23 -07002422 }
2423 }
Ben Cahille5854472009-11-06 14:52:58 -08002424
2425 /* Allow device to power down */
2426 iwl_release_nic_access(priv);
2427 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002428 return pos;
Reinette Chatreb7a79402009-09-25 14:24:23 -07002429}
2430
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002431/**
2432 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2433 */
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002434static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
2435 u32 num_wraps, u32 next_entry,
2436 u32 size, u32 mode,
2437 int pos, char **buf, size_t bufsz)
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002438{
2439 /*
2440 * display the newest DEFAULT_LOG_ENTRIES entries
2441 * i.e the entries just before the next ont that uCode would fill.
2442 */
2443 if (num_wraps) {
2444 if (next_entry < size) {
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002445 pos = iwl_print_event_log(priv,
2446 capacity - (size - next_entry),
2447 size - next_entry, mode,
2448 pos, buf, bufsz);
2449 pos = iwl_print_event_log(priv, 0,
2450 next_entry, mode,
2451 pos, buf, bufsz);
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002452 } else
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002453 pos = iwl_print_event_log(priv, next_entry - size,
2454 size, mode, pos, buf, bufsz);
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002455 } else {
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002456 if (next_entry < size) {
2457 pos = iwl_print_event_log(priv, 0, next_entry,
2458 mode, pos, buf, bufsz);
2459 } else {
2460 pos = iwl_print_event_log(priv, next_entry - size,
2461 size, mode, pos, buf, bufsz);
2462 }
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002463 }
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002464 return pos;
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002465}
2466
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002467#define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2468
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002469int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2470 char **buf, bool display)
Reinette Chatreb7a79402009-09-25 14:24:23 -07002471{
2472 u32 base; /* SRAM byte address of event log header */
2473 u32 capacity; /* event log capacity in # entries */
2474 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
2475 u32 num_wraps; /* # times uCode wrapped to top of log */
2476 u32 next_entry; /* index of next entry to be written by uCode */
2477 u32 size; /* # entries that we'll print */
Johannes Bergb2e640d2010-05-05 23:24:54 -07002478 u32 logsize;
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002479 int pos = 0;
2480 size_t bufsz = 0;
Reinette Chatreb7a79402009-09-25 14:24:23 -07002481
Johannes Bergb2e640d2010-05-05 23:24:54 -07002482 if (priv->ucode_type == UCODE_INIT) {
Reinette Chatreb7a79402009-09-25 14:24:23 -07002483 base = le32_to_cpu(priv->card_alive_init.log_event_table_ptr);
Johannes Bergb2e640d2010-05-05 23:24:54 -07002484 logsize = priv->_agn.init_evtlog_size;
2485 if (!base)
2486 base = priv->_agn.init_evtlog_ptr;
2487 } else {
Reinette Chatreb7a79402009-09-25 14:24:23 -07002488 base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
Johannes Bergb2e640d2010-05-05 23:24:54 -07002489 logsize = priv->_agn.inst_evtlog_size;
2490 if (!base)
2491 base = priv->_agn.inst_evtlog_ptr;
2492 }
Reinette Chatreb7a79402009-09-25 14:24:23 -07002493
2494 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
Wey-Yi Guy212fb572009-12-02 12:53:00 -08002495 IWL_ERR(priv,
2496 "Invalid event log pointer 0x%08X for %s uCode\n",
2497 base, (priv->ucode_type == UCODE_INIT) ? "Init" : "RT");
Wey-Yi Guy937c3972010-01-15 13:43:36 -08002498 return -EINVAL;
Reinette Chatreb7a79402009-09-25 14:24:23 -07002499 }
2500
2501 /* event log header */
2502 capacity = iwl_read_targ_mem(priv, base);
2503 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2504 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2505 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2506
Johannes Bergb2e640d2010-05-05 23:24:54 -07002507 if (capacity > logsize) {
Ben Cahill84c40692009-11-06 14:52:57 -08002508 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
Johannes Bergb2e640d2010-05-05 23:24:54 -07002509 capacity, logsize);
2510 capacity = logsize;
Ben Cahill84c40692009-11-06 14:52:57 -08002511 }
2512
Johannes Bergb2e640d2010-05-05 23:24:54 -07002513 if (next_entry > logsize) {
Ben Cahill84c40692009-11-06 14:52:57 -08002514 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
Johannes Bergb2e640d2010-05-05 23:24:54 -07002515 next_entry, logsize);
2516 next_entry = logsize;
Ben Cahill84c40692009-11-06 14:52:57 -08002517 }
2518
Reinette Chatreb7a79402009-09-25 14:24:23 -07002519 size = num_wraps ? capacity : next_entry;
2520
2521 /* bail out if nothing in log */
2522 if (size == 0) {
2523 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002524 return pos;
Reinette Chatreb7a79402009-09-25 14:24:23 -07002525 }
2526
Wey-Yi Guy9f28ebc2010-11-26 13:24:19 -08002527 /* enable/disable bt channel inhibition */
Wey-Yi Guyf37837c2010-08-23 07:57:12 -07002528 priv->bt_ch_announce = iwlagn_bt_ch_announce;
2529
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002530#ifdef CONFIG_IWLWIFI_DEBUG
Wey-Yi Guy521d9bc2009-12-10 14:37:23 -08002531 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002532 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2533 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2534#else
2535 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2536 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
Reinette Chatreb7a79402009-09-25 14:24:23 -07002537#endif
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002538 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2539 size);
2540
2541#ifdef CONFIG_IWLWIFI_DEBUG
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002542 if (display) {
2543 if (full_log)
2544 bufsz = capacity * 48;
2545 else
2546 bufsz = size * 48;
2547 *buf = kmalloc(bufsz, GFP_KERNEL);
2548 if (!*buf)
Wey-Yi Guy937c3972010-01-15 13:43:36 -08002549 return -ENOMEM;
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002550 }
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002551 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
2552 /*
2553 * if uCode has wrapped back to top of log,
2554 * start at the oldest entry,
2555 * i.e the next one that uCode would fill.
2556 */
2557 if (num_wraps)
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002558 pos = iwl_print_event_log(priv, next_entry,
2559 capacity - next_entry, mode,
2560 pos, buf, bufsz);
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002561 /* (then/else) start at top of log */
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002562 pos = iwl_print_event_log(priv, 0,
2563 next_entry, mode, pos, buf, bufsz);
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002564 } else
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002565 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2566 next_entry, size, mode,
2567 pos, buf, bufsz);
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002568#else
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002569 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2570 next_entry, size, mode,
2571 pos, buf, bufsz);
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002572#endif
Wey-Yi Guyb03d7d02009-12-14 14:12:20 -08002573 return pos;
Wey-Yi Guyc341ddb2009-11-20 12:05:07 -08002574}
Reinette Chatreb7a79402009-09-25 14:24:23 -07002575
Wey-Yi Guy0975cc82010-07-31 08:34:07 -07002576static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
2577{
2578 struct iwl_ct_kill_config cmd;
2579 struct iwl_ct_kill_throttling_config adv_cmd;
2580 unsigned long flags;
2581 int ret = 0;
2582
2583 spin_lock_irqsave(&priv->lock, flags);
2584 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2585 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2586 spin_unlock_irqrestore(&priv->lock, flags);
2587 priv->thermal_throttle.ct_kill_toggle = false;
2588
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07002589 if (priv->cfg->base_params->support_ct_kill_exit) {
Wey-Yi Guy0975cc82010-07-31 08:34:07 -07002590 adv_cmd.critical_temperature_enter =
2591 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2592 adv_cmd.critical_temperature_exit =
2593 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
2594
2595 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2596 sizeof(adv_cmd), &adv_cmd);
2597 if (ret)
2598 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2599 else
2600 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2601 "succeeded, "
2602 "critical temperature enter is %d,"
2603 "exit is %d\n",
2604 priv->hw_params.ct_kill_threshold,
2605 priv->hw_params.ct_kill_exit_threshold);
2606 } else {
2607 cmd.critical_temperature_R =
2608 cpu_to_le32(priv->hw_params.ct_kill_threshold);
2609
2610 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
2611 sizeof(cmd), &cmd);
2612 if (ret)
2613 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
2614 else
2615 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
2616 "succeeded, "
2617 "critical temperature is %d\n",
2618 priv->hw_params.ct_kill_threshold);
2619 }
2620}
2621
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -07002622static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
2623{
2624 struct iwl_calib_cfg_cmd calib_cfg_cmd;
2625 struct iwl_host_cmd cmd = {
2626 .id = CALIBRATION_CFG_CMD,
2627 .len = sizeof(struct iwl_calib_cfg_cmd),
2628 .data = &calib_cfg_cmd,
2629 };
2630
2631 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
2632 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07002633 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -07002634
2635 return iwl_send_cmd(priv, &cmd);
2636}
2637
2638
Zhu Yib481de92007-09-25 17:54:57 -07002639/**
Tomas Winkler4a4a9e82008-05-29 16:34:54 +08002640 * iwl_alive_start - called after REPLY_ALIVE notification received
Zhu Yib481de92007-09-25 17:54:57 -07002641 * from protocol/runtime uCode (initialization uCode's
Tomas Winkler4a4a9e82008-05-29 16:34:54 +08002642 * Alive gets handled by iwl_init_alive_start()).
Zhu Yib481de92007-09-25 17:54:57 -07002643 */
Tomas Winkler4a4a9e82008-05-29 16:34:54 +08002644static void iwl_alive_start(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07002645{
Tomas Winkler57aab752008-04-14 21:16:03 -07002646 int ret = 0;
Johannes Berg246ed352010-08-23 10:46:32 +02002647 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
Zhu Yib481de92007-09-25 17:54:57 -07002648
Tomas Winklere1623442009-01-27 14:27:56 -08002649 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
Zhu Yib481de92007-09-25 17:54:57 -07002650
2651 if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2652 /* We had an error bringing up the hardware, so take it
2653 * all the way back down so we can try again */
Tomas Winklere1623442009-01-27 14:27:56 -08002654 IWL_DEBUG_INFO(priv, "Alive failed.\n");
Zhu Yib481de92007-09-25 17:54:57 -07002655 goto restart;
2656 }
2657
2658 /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2659 * This is a paranoid check, because we would not have gotten the
2660 * "runtime" alive if code weren't properly loaded. */
Emmanuel Grumbachb0692f22008-04-24 11:55:18 -07002661 if (iwl_verify_ucode(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07002662 /* Runtime instruction load was bad;
2663 * take it all the way back down so we can try again */
Tomas Winklere1623442009-01-27 14:27:56 -08002664 IWL_DEBUG_INFO(priv, "Bad runtime uCode load.\n");
Zhu Yib481de92007-09-25 17:54:57 -07002665 goto restart;
2666 }
2667
Tomas Winkler57aab752008-04-14 21:16:03 -07002668 ret = priv->cfg->ops->lib->alive_notify(priv);
2669 if (ret) {
Winkler, Tomas39aadf82008-12-19 10:37:32 +08002670 IWL_WARN(priv,
2671 "Could not complete ALIVE transition [ntf]: %d\n", ret);
Zhu Yib481de92007-09-25 17:54:57 -07002672 goto restart;
2673 }
2674
Shanyu Zhao6d6a1af2010-09-14 18:13:31 -07002675
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002676 /* After the ALIVE response, we can send host commands to the uCode */
Zhu Yib481de92007-09-25 17:54:57 -07002677 set_bit(STATUS_ALIVE, &priv->status);
2678
Stanislaw Gruszka22de94d2010-12-03 15:41:48 +01002679 /* Enable watchdog to monitor the driver tx queues */
2680 iwl_setup_watchdog(priv);
Wey-Yi Guyb74e31a2010-03-01 17:23:50 -08002681
Tomas Winklerfee12472008-04-03 16:05:21 -07002682 if (iwl_is_rfkill(priv))
Zhu Yib481de92007-09-25 17:54:57 -07002683 return;
2684
Wey-Yi Guybc795df2010-10-11 14:24:05 -07002685 /* download priority table before any calibration request */
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07002686 if (priv->cfg->bt_params &&
2687 priv->cfg->bt_params->advanced_bt_coexist) {
Wey-Yi Guyf7322f82010-08-23 15:24:49 -07002688 /* Configure Bluetooth device coexistence support */
2689 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2690 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2691 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2692 priv->cfg->ops->hcmd->send_bt_config(priv);
2693 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
Wey-Yi Guya5901cb2010-09-23 09:56:51 -07002694 iwlagn_send_prio_tbl(priv);
Wey-Yi Guyf7322f82010-08-23 15:24:49 -07002695
2696 /* FIXME: w/a to force change uCode BT state machine */
2697 iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
2698 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2699 iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
2700 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2701 }
Wey-Yi Guybc795df2010-10-11 14:24:05 -07002702 if (priv->hw_params.calib_rt_cfg)
2703 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
2704
Johannes Berg36d68252008-05-15 12:55:26 +02002705 ieee80211_wake_queues(priv->hw);
Zhu Yib481de92007-09-25 17:54:57 -07002706
Johannes Berg470ab2d2010-01-21 11:23:30 -08002707 priv->active_rate = IWL_RATES_MASK;
Zhu Yib481de92007-09-25 17:54:57 -07002708
Wey-Yi Guy2f748de2009-09-17 10:43:51 -07002709 /* Configure Tx antenna selection based on H/W config */
2710 if (priv->cfg->ops->hcmd->set_tx_ant)
2711 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2712
Johannes Berg246ed352010-08-23 10:46:32 +02002713 if (iwl_is_associated_ctx(ctx)) {
Gregory Greenmanc1adf9f2008-05-15 13:53:59 +08002714 struct iwl_rxon_cmd *active_rxon =
Johannes Berg246ed352010-08-23 10:46:32 +02002715 (struct iwl_rxon_cmd *)&ctx->active;
Mohamed Abbas019fb972009-03-17 21:59:18 -07002716 /* apply any changes in staging */
Johannes Berg246ed352010-08-23 10:46:32 +02002717 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
Zhu Yib481de92007-09-25 17:54:57 -07002718 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2719 } else {
Johannes Bergd0fe4782010-08-23 10:46:58 +02002720 struct iwl_rxon_context *tmp;
Zhu Yib481de92007-09-25 17:54:57 -07002721 /* Initialize our rx_config data */
Johannes Bergd0fe4782010-08-23 10:46:58 +02002722 for_each_context(priv, tmp)
2723 iwl_connection_init_rx_config(priv, tmp);
Abhijeet Kolekar45823532009-04-08 11:26:44 -07002724
2725 if (priv->cfg->ops->hcmd->set_rxon_chain)
Johannes Berg246ed352010-08-23 10:46:32 +02002726 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
Zhu Yib481de92007-09-25 17:54:57 -07002727 }
2728
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07002729 if (priv->cfg->bt_params &&
2730 !priv->cfg->bt_params->advanced_bt_coexist) {
Wey-Yi Guyaeb4a2e2010-08-23 07:57:05 -07002731 /* Configure Bluetooth device coexistence support */
2732 priv->cfg->ops->hcmd->send_bt_config(priv);
2733 }
Zhu Yib481de92007-09-25 17:54:57 -07002734
Tomas Winkler4a4a9e82008-05-29 16:34:54 +08002735 iwl_reset_run_time_calib(priv);
2736
Wey-Yi Guy9e2e7422010-11-12 13:52:37 -08002737 set_bit(STATUS_READY, &priv->status);
2738
Zhu Yib481de92007-09-25 17:54:57 -07002739 /* Configure the adapter for unassociated operation */
Johannes Berg246ed352010-08-23 10:46:32 +02002740 iwlcore_commit_rxon(priv, ctx);
Zhu Yib481de92007-09-25 17:54:57 -07002741
2742 /* At this point, the NIC is initialized and operational */
Emmanuel Grumbach47f4a582008-06-12 09:47:13 +08002743 iwl_rf_kill_ct_config(priv);
Zhu Yi5a66926a2008-01-14 17:46:18 -08002744
Tomas Winklere1623442009-01-27 14:27:56 -08002745 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
Zhu Yi5a66926a2008-01-14 17:46:18 -08002746 wake_up_interruptible(&priv->wait_command_queue);
Zhu Yib481de92007-09-25 17:54:57 -07002747
Johannes Berge312c242009-08-07 15:41:51 -07002748 iwl_power_update_mode(priv, true);
Reinette Chatre7e246192010-02-18 22:58:32 -08002749 IWL_DEBUG_INFO(priv, "Updated power mode\n");
2750
Assaf Kraussc46fbef2008-06-12 09:47:05 +08002751
Zhu Yib481de92007-09-25 17:54:57 -07002752 return;
2753
2754 restart:
2755 queue_work(priv->workqueue, &priv->restart);
2756}
2757
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08002758static void iwl_cancel_deferred_work(struct iwl_priv *priv);
Zhu Yib481de92007-09-25 17:54:57 -07002759
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002760static void __iwl_down(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07002761{
2762 unsigned long flags;
2763 int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -07002764
Tomas Winklere1623442009-01-27 14:27:56 -08002765 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
Zhu Yib481de92007-09-25 17:54:57 -07002766
Stanislaw Gruszkad745d472010-09-13 14:46:35 +02002767 iwl_scan_cancel_timeout(priv, 200);
2768
2769 exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -07002770
Stanislaw Gruszkab62177a2010-08-20 15:23:47 +02002771 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2772 * to prevent rearm timer */
Stanislaw Gruszka22de94d2010-12-03 15:41:48 +01002773 del_timer_sync(&priv->watchdog);
Stanislaw Gruszkab62177a2010-08-20 15:23:47 +02002774
Johannes Bergdcef7322010-08-27 08:55:52 -07002775 iwl_clear_ucode_stations(priv, NULL);
Johannes Berga194e322010-08-27 08:53:46 -07002776 iwl_dealloc_bcast_stations(priv);
Johannes Bergdb125c72010-05-07 01:49:15 -07002777 iwl_clear_driver_stations(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002778
Johannes Berga1174132010-08-23 07:56:59 -07002779 /* reset BT coex data */
Wey-Yi Guyda5dbb92010-08-23 07:57:13 -07002780 priv->bt_status = 0;
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07002781 if (priv->cfg->bt_params)
2782 priv->bt_traffic_load =
2783 priv->cfg->bt_params->bt_init_traffic_load;
2784 else
2785 priv->bt_traffic_load = 0;
Johannes Berga1174132010-08-23 07:56:59 -07002786 priv->bt_sco_active = false;
Wey-Yi Guybee008b2010-08-23 07:57:04 -07002787 priv->bt_full_concurrent = false;
2788 priv->bt_ci_compliance = 0;
Johannes Berga1174132010-08-23 07:56:59 -07002789
Zhu Yib481de92007-09-25 17:54:57 -07002790 /* Unblock any waiting calls */
2791 wake_up_interruptible_all(&priv->wait_command_queue);
2792
Zhu Yib481de92007-09-25 17:54:57 -07002793 /* Wipe out the EXIT_PENDING status bit if we are not actually
2794 * exiting the module */
2795 if (!exit_pending)
2796 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2797
2798 /* stop and reset the on-board processor */
Tomas Winkler3395f6e2008-03-25 16:33:37 -07002799 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
Zhu Yib481de92007-09-25 17:54:57 -07002800
2801 /* tell the device to stop sending interrupts */
Mohamed Abbas0359fac2008-03-28 16:21:08 -07002802 spin_lock_irqsave(&priv->lock, flags);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002803 iwl_disable_interrupts(priv);
Mohamed Abbas0359fac2008-03-28 16:21:08 -07002804 spin_unlock_irqrestore(&priv->lock, flags);
2805 iwl_synchronize_irq(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002806
2807 if (priv->mac80211_registered)
2808 ieee80211_stop_queues(priv->hw);
2809
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002810 /* If we have not previously called iwl_init() then
Johannes Berga60e77e2009-06-04 18:26:06 +02002811 * clear all bits but the RF Kill bit and return */
Tomas Winklerfee12472008-04-03 16:05:21 -07002812 if (!iwl_is_init(priv)) {
Zhu Yib481de92007-09-25 17:54:57 -07002813 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2814 STATUS_RF_KILL_HW |
Reinette Chatre97888642008-02-06 11:20:38 -08002815 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2816 STATUS_GEO_CONFIGURED |
Mohamed Abbas052ec3f2008-06-30 17:23:15 +08002817 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2818 STATUS_EXIT_PENDING;
Zhu Yib481de92007-09-25 17:54:57 -07002819 goto exit;
2820 }
2821
Wey-Yi Guy6da3a132009-03-26 10:14:08 -07002822 /* ...otherwise clear out all the status bits but the RF Kill
Johannes Berga60e77e2009-06-04 18:26:06 +02002823 * bit and continue taking the NIC down. */
Zhu Yib481de92007-09-25 17:54:57 -07002824 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2825 STATUS_RF_KILL_HW |
Reinette Chatre97888642008-02-06 11:20:38 -08002826 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2827 STATUS_GEO_CONFIGURED |
Zhu Yib481de92007-09-25 17:54:57 -07002828 test_bit(STATUS_FW_ERROR, &priv->status) <<
Mohamed Abbas052ec3f2008-06-30 17:23:15 +08002829 STATUS_FW_ERROR |
2830 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2831 STATUS_EXIT_PENDING;
Zhu Yib481de92007-09-25 17:54:57 -07002832
Mohamed Abbasef850d72009-05-22 11:01:50 -07002833 /* device going down, Stop using ICT table */
Wey-Yi Guye39fdee2010-11-10 09:56:40 -08002834 if (priv->cfg->ops->lib->isr_ops.disable)
2835 priv->cfg->ops->lib->isr_ops.disable(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002836
Wey-Yi Guy74bcdb32010-03-17 13:34:34 -07002837 iwlagn_txq_ctx_stop(priv);
Wey-Yi Guy54b81552010-03-17 13:34:35 -07002838 iwlagn_rxq_stop(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002839
Ben Cahill309e7312009-11-06 14:53:03 -08002840 /* Power-down device's busmaster DMA clocks */
2841 iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT);
Zhu Yib481de92007-09-25 17:54:57 -07002842 udelay(5);
2843
Ben Cahill309e7312009-11-06 14:53:03 -08002844 /* Make sure (redundant) we've released our request to stay awake */
2845 iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2846
Ben Cahill4d2ccdb2009-10-09 13:20:20 -07002847 /* Stop the device, and put it in low power state */
Johannes Berg14e8e4a2010-09-22 18:02:10 +02002848 iwl_apm_stop(priv);
Ben Cahill4d2ccdb2009-10-09 13:20:20 -07002849
Zhu Yib481de92007-09-25 17:54:57 -07002850 exit:
Tomas Winkler885ba202008-05-29 16:34:55 +08002851 memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
Zhu Yib481de92007-09-25 17:54:57 -07002852
Johannes Berg77834542010-10-04 05:50:36 -07002853 dev_kfree_skb(priv->beacon_skb);
Johannes Berg12e934d2010-10-04 05:50:06 -07002854 priv->beacon_skb = NULL;
Zhu Yib481de92007-09-25 17:54:57 -07002855
2856 /* clear out any free frames */
Tomas Winklerfcab4232008-05-15 13:54:01 +08002857 iwl_clear_free_frames(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002858}
2859
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002860static void iwl_down(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07002861{
2862 mutex_lock(&priv->mutex);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002863 __iwl_down(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002864 mutex_unlock(&priv->mutex);
Zhu Yib24d22b2007-12-19 13:59:52 +08002865
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08002866 iwl_cancel_deferred_work(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002867}
2868
Mohamed Abbas086ed112009-05-22 11:01:54 -07002869#define HW_READY_TIMEOUT (50)
2870
2871static int iwl_set_hw_ready(struct iwl_priv *priv)
2872{
2873 int ret = 0;
2874
2875 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2876 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
2877
2878 /* See if we got it */
2879 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2880 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2881 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2882 HW_READY_TIMEOUT);
2883 if (ret != -ETIMEDOUT)
2884 priv->hw_ready = true;
2885 else
2886 priv->hw_ready = false;
2887
2888 IWL_DEBUG_INFO(priv, "hardware %s\n",
2889 (priv->hw_ready == 1) ? "ready" : "not ready");
2890 return ret;
2891}
2892
2893static int iwl_prepare_card_hw(struct iwl_priv *priv)
2894{
2895 int ret = 0;
2896
Frans Pop91dd6c22010-03-24 14:19:58 -07002897 IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
Mohamed Abbas086ed112009-05-22 11:01:54 -07002898
Mohamed Abbas3354a0f2009-06-19 13:52:41 -07002899 ret = iwl_set_hw_ready(priv);
2900 if (priv->hw_ready)
2901 return ret;
2902
2903 /* If HW is not ready, prepare the conditions to check again */
Mohamed Abbas086ed112009-05-22 11:01:54 -07002904 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2905 CSR_HW_IF_CONFIG_REG_PREPARE);
2906
2907 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2908 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
2909 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
2910
Mohamed Abbas3354a0f2009-06-19 13:52:41 -07002911 /* HW should be ready by now, check again. */
Mohamed Abbas086ed112009-05-22 11:01:54 -07002912 if (ret != -ETIMEDOUT)
2913 iwl_set_hw_ready(priv);
2914
2915 return ret;
2916}
2917
Zhu Yib481de92007-09-25 17:54:57 -07002918#define MAX_HW_RESTARTS 5
2919
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002920static int __iwl_up(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07002921{
Johannes Berga194e322010-08-27 08:53:46 -07002922 struct iwl_rxon_context *ctx;
Tomas Winkler57aab752008-04-14 21:16:03 -07002923 int i;
2924 int ret;
Zhu Yib481de92007-09-25 17:54:57 -07002925
2926 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
Winkler, Tomas39aadf82008-12-19 10:37:32 +08002927 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
Zhu Yib481de92007-09-25 17:54:57 -07002928 return -EIO;
2929 }
2930
Reinette Chatree903fbd2008-01-30 22:05:15 -08002931 if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08002932 IWL_ERR(priv, "ucode not available for device bringup\n");
Reinette Chatree903fbd2008-01-30 22:05:15 -08002933 return -EIO;
2934 }
2935
Johannes Berga194e322010-08-27 08:53:46 -07002936 for_each_context(priv, ctx) {
Johannes Berga30e3112010-09-22 18:02:01 +02002937 ret = iwlagn_alloc_bcast_station(priv, ctx);
Johannes Berga194e322010-08-27 08:53:46 -07002938 if (ret) {
2939 iwl_dealloc_bcast_stations(priv);
2940 return ret;
2941 }
2942 }
Johannes Berg2c810cc2010-04-29 00:53:29 -07002943
Mohamed Abbas086ed112009-05-22 11:01:54 -07002944 iwl_prepare_card_hw(priv);
2945
2946 if (!priv->hw_ready) {
2947 IWL_WARN(priv, "Exit HW not ready\n");
2948 return -EIO;
2949 }
2950
Zhu Yie655b9f2008-01-24 02:19:38 -08002951 /* If platform's RF_KILL switch is NOT set to KILL */
Tomas Winklerc1842d62008-08-04 16:00:43 +08002952 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
Zhu Yie655b9f2008-01-24 02:19:38 -08002953 clear_bit(STATUS_RF_KILL_HW, &priv->status);
Emmanuel Grumbach3bff19c2008-06-30 17:23:19 +08002954 else
Zhu Yie655b9f2008-01-24 02:19:38 -08002955 set_bit(STATUS_RF_KILL_HW, &priv->status);
Emmanuel Grumbach3bff19c2008-06-30 17:23:19 +08002956
Tomas Winklerc1842d62008-08-04 16:00:43 +08002957 if (iwl_is_rfkill(priv)) {
Johannes Berga60e77e2009-06-04 18:26:06 +02002958 wiphy_rfkill_set_hw_state(priv->hw->wiphy, true);
2959
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002960 iwl_enable_interrupts(priv);
Johannes Berga60e77e2009-06-04 18:26:06 +02002961 IWL_WARN(priv, "Radio disabled by HW RF Kill switch\n");
Tomas Winklerc1842d62008-08-04 16:00:43 +08002962 return 0;
Zhu Yib481de92007-09-25 17:54:57 -07002963 }
2964
Tomas Winkler3395f6e2008-03-25 16:33:37 -07002965 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
Zhu Yib481de92007-09-25 17:54:57 -07002966
Johannes Berg13bb9482010-08-23 10:46:33 +02002967 /* must be initialised before iwl_hw_nic_init */
Johannes Berg751ca302010-08-23 10:46:34 +02002968 if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
2969 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
2970 else
2971 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
Johannes Berg13bb9482010-08-23 10:46:33 +02002972
Wey-Yi Guy74bcdb32010-03-17 13:34:34 -07002973 ret = iwlagn_hw_nic_init(priv);
Tomas Winkler57aab752008-04-14 21:16:03 -07002974 if (ret) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08002975 IWL_ERR(priv, "Unable to init nic\n");
Tomas Winkler57aab752008-04-14 21:16:03 -07002976 return ret;
Zhu Yib481de92007-09-25 17:54:57 -07002977 }
2978
2979 /* make sure rfkill handshake bits are cleared */
Tomas Winkler3395f6e2008-03-25 16:33:37 -07002980 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2981 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
Zhu Yib481de92007-09-25 17:54:57 -07002982 CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2983
2984 /* clear (again), then enable host interrupts */
Tomas Winkler3395f6e2008-03-25 16:33:37 -07002985 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07002986 iwl_enable_interrupts(priv);
Zhu Yib481de92007-09-25 17:54:57 -07002987
2988 /* really make sure rfkill handshake bits are cleared */
Tomas Winkler3395f6e2008-03-25 16:33:37 -07002989 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2990 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
Zhu Yib481de92007-09-25 17:54:57 -07002991
2992 /* Copy original ucode data image from disk into backup cache.
2993 * This will be used to initialize the on-board processor's
2994 * data SRAM for a clean start when the runtime program first loads. */
2995 memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
Zhu Yi5a66926a2008-01-14 17:46:18 -08002996 priv->ucode_data.len);
Zhu Yib481de92007-09-25 17:54:57 -07002997
Zhu Yib481de92007-09-25 17:54:57 -07002998 for (i = 0; i < MAX_HW_RESTARTS; i++) {
2999
Zhu Yib481de92007-09-25 17:54:57 -07003000 /* load bootstrap state machine,
3001 * load bootstrap program into processor's memory,
3002 * prepare to load the "initialize" uCode */
Tomas Winkler57aab752008-04-14 21:16:03 -07003003 ret = priv->cfg->ops->lib->load_ucode(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003004
Tomas Winkler57aab752008-04-14 21:16:03 -07003005 if (ret) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08003006 IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
3007 ret);
Zhu Yib481de92007-09-25 17:54:57 -07003008 continue;
3009 }
3010
3011 /* start card; "initialize" will load runtime ucode */
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003012 iwl_nic_start(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003013
Tomas Winklere1623442009-01-27 14:27:56 -08003014 IWL_DEBUG_INFO(priv, DRV_NAME " is coming up\n");
Zhu Yib481de92007-09-25 17:54:57 -07003015
3016 return 0;
3017 }
3018
3019 set_bit(STATUS_EXIT_PENDING, &priv->status);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003020 __iwl_down(priv);
Mohamed Abbas64e72c3e2008-06-12 09:47:03 +08003021 clear_bit(STATUS_EXIT_PENDING, &priv->status);
Zhu Yib481de92007-09-25 17:54:57 -07003022
3023 /* tried to restart and config the device for as long as our
3024 * patience could withstand */
Winkler, Tomas15b16872008-12-19 10:37:33 +08003025 IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
Zhu Yib481de92007-09-25 17:54:57 -07003026 return -EIO;
3027}
3028
3029
3030/*****************************************************************************
3031 *
3032 * Workqueue callbacks
3033 *
3034 *****************************************************************************/
3035
Tomas Winkler4a4a9e82008-05-29 16:34:54 +08003036static void iwl_bg_init_alive_start(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07003037{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07003038 struct iwl_priv *priv =
3039 container_of(data, struct iwl_priv, init_alive_start.work);
Zhu Yib481de92007-09-25 17:54:57 -07003040
3041 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3042 return;
3043
3044 mutex_lock(&priv->mutex);
Emmanuel Grumbachf3ccc082008-05-05 10:22:45 +08003045 priv->cfg->ops->lib->init_alive_start(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003046 mutex_unlock(&priv->mutex);
3047}
3048
Tomas Winkler4a4a9e82008-05-29 16:34:54 +08003049static void iwl_bg_alive_start(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07003050{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07003051 struct iwl_priv *priv =
3052 container_of(data, struct iwl_priv, alive_start.work);
Zhu Yib481de92007-09-25 17:54:57 -07003053
3054 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3055 return;
3056
Mohamed Abbas258c44a2009-06-03 11:44:10 -07003057 /* enable dram interrupt */
Wey-Yi Guye39fdee2010-11-10 09:56:40 -08003058 if (priv->cfg->ops->lib->isr_ops.reset)
3059 priv->cfg->ops->lib->isr_ops.reset(priv);
Mohamed Abbas258c44a2009-06-03 11:44:10 -07003060
Zhu Yib481de92007-09-25 17:54:57 -07003061 mutex_lock(&priv->mutex);
Tomas Winkler4a4a9e82008-05-29 16:34:54 +08003062 iwl_alive_start(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003063 mutex_unlock(&priv->mutex);
3064}
3065
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +08003066static void iwl_bg_run_time_calib_work(struct work_struct *work)
3067{
3068 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3069 run_time_calib_work);
3070
3071 mutex_lock(&priv->mutex);
3072
3073 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3074 test_bit(STATUS_SCANNING, &priv->status)) {
3075 mutex_unlock(&priv->mutex);
3076 return;
3077 }
3078
3079 if (priv->start_calib) {
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07003080 if (priv->cfg->bt_params &&
3081 priv->cfg->bt_params->bt_statistics) {
Wey-Yi Guy7980fba2010-07-14 08:08:57 -07003082 iwl_chain_noise_calibration(priv,
3083 (void *)&priv->_agn.statistics_bt);
3084 iwl_sensitivity_calibration(priv,
3085 (void *)&priv->_agn.statistics_bt);
3086 } else {
3087 iwl_chain_noise_calibration(priv,
3088 (void *)&priv->_agn.statistics);
3089 iwl_sensitivity_calibration(priv,
3090 (void *)&priv->_agn.statistics);
3091 }
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +08003092 }
3093
3094 mutex_unlock(&priv->mutex);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +08003095}
3096
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003097static void iwl_bg_restart(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07003098{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07003099 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
Zhu Yib481de92007-09-25 17:54:57 -07003100
3101 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3102 return;
3103
Johannes Berg19cc1082009-05-08 13:44:36 -07003104 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
Johannes Berg8bd413e2010-08-23 10:46:40 +02003105 struct iwl_rxon_context *ctx;
Wey-Yi Guybee008b2010-08-23 07:57:04 -07003106 bool bt_sco, bt_full_concurrent;
3107 u8 bt_ci_compliance;
Johannes Berg511b0822010-08-23 07:57:01 -07003108 u8 bt_load;
Wey-Yi Guyda5dbb92010-08-23 07:57:13 -07003109 u8 bt_status;
Johannes Berg511b0822010-08-23 07:57:01 -07003110
Johannes Berg19cc1082009-05-08 13:44:36 -07003111 mutex_lock(&priv->mutex);
Johannes Berg8bd413e2010-08-23 10:46:40 +02003112 for_each_context(priv, ctx)
3113 ctx->vif = NULL;
Johannes Berg19cc1082009-05-08 13:44:36 -07003114 priv->is_open = 0;
Johannes Berg511b0822010-08-23 07:57:01 -07003115
3116 /*
3117 * __iwl_down() will clear the BT status variables,
3118 * which is correct, but when we restart we really
3119 * want to keep them so restore them afterwards.
3120 *
3121 * The restart process will later pick them up and
3122 * re-configure the hw when we reconfigure the BT
3123 * command.
3124 */
3125 bt_sco = priv->bt_sco_active;
Wey-Yi Guybee008b2010-08-23 07:57:04 -07003126 bt_full_concurrent = priv->bt_full_concurrent;
3127 bt_ci_compliance = priv->bt_ci_compliance;
Johannes Berg511b0822010-08-23 07:57:01 -07003128 bt_load = priv->bt_traffic_load;
Wey-Yi Guyda5dbb92010-08-23 07:57:13 -07003129 bt_status = priv->bt_status;
Johannes Berg511b0822010-08-23 07:57:01 -07003130
Johannes Berga1174132010-08-23 07:56:59 -07003131 __iwl_down(priv);
Johannes Berg511b0822010-08-23 07:57:01 -07003132
3133 priv->bt_sco_active = bt_sco;
Wey-Yi Guybee008b2010-08-23 07:57:04 -07003134 priv->bt_full_concurrent = bt_full_concurrent;
3135 priv->bt_ci_compliance = bt_ci_compliance;
Johannes Berg511b0822010-08-23 07:57:01 -07003136 priv->bt_traffic_load = bt_load;
Wey-Yi Guyda5dbb92010-08-23 07:57:13 -07003137 priv->bt_status = bt_status;
Johannes Berg511b0822010-08-23 07:57:01 -07003138
Johannes Berg19cc1082009-05-08 13:44:36 -07003139 mutex_unlock(&priv->mutex);
Johannes Berga1174132010-08-23 07:56:59 -07003140 iwl_cancel_deferred_work(priv);
Johannes Berg19cc1082009-05-08 13:44:36 -07003141 ieee80211_restart_hw(priv->hw);
3142 } else {
3143 iwl_down(priv);
Johannes Berg80676512010-01-21 06:07:17 -08003144
3145 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3146 return;
3147
3148 mutex_lock(&priv->mutex);
3149 __iwl_up(priv);
3150 mutex_unlock(&priv->mutex);
Johannes Berg19cc1082009-05-08 13:44:36 -07003151 }
Zhu Yib481de92007-09-25 17:54:57 -07003152}
3153
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003154static void iwl_bg_rx_replenish(struct work_struct *data)
Zhu Yib481de92007-09-25 17:54:57 -07003155{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07003156 struct iwl_priv *priv =
3157 container_of(data, struct iwl_priv, rx_replenish);
Zhu Yib481de92007-09-25 17:54:57 -07003158
3159 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3160 return;
3161
3162 mutex_lock(&priv->mutex);
Wey-Yi Guy54b81552010-03-17 13:34:35 -07003163 iwlagn_rx_replenish(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003164 mutex_unlock(&priv->mutex);
3165}
3166
Zhu Yib481de92007-09-25 17:54:57 -07003167/*****************************************************************************
3168 *
3169 * mac80211 entry point functions
3170 *
3171 *****************************************************************************/
3172
Emmanuel Grumbach154b25c2008-06-30 17:23:24 +08003173#define UCODE_READY_TIMEOUT (4 * HZ)
Zhu Yi5a66926a2008-01-14 17:46:18 -08003174
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003175/*
3176 * Not a mac80211 entry point function, but it fits in with all the
3177 * other mac80211 functions grouped here.
3178 */
Johannes Bergdd7a2502010-04-28 23:33:10 -07003179static int iwl_mac_setup_register(struct iwl_priv *priv,
3180 struct iwlagn_ucode_capabilities *capa)
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003181{
3182 int ret;
3183 struct ieee80211_hw *hw = priv->hw;
Johannes Bergd0fe4782010-08-23 10:46:58 +02003184 struct iwl_rxon_context *ctx;
3185
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003186 hw->rate_control_algorithm = "iwl-agn-rs";
3187
3188 /* Tell mac80211 our characteristics */
3189 hw->flags = IEEE80211_HW_SIGNAL_DBM |
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003190 IEEE80211_HW_AMPDU_AGGREGATION |
Johannes Berg2491fa42010-08-23 10:46:52 +02003191 IEEE80211_HW_NEED_DTIM_PERIOD |
Johannes Berg6fb55112010-11-16 11:55:02 -08003192 IEEE80211_HW_SPECTRUM_MGMT |
3193 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003194
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07003195 if (!priv->cfg->base_params->broken_powersave)
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003196 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
3197 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
3198
Johannes Bergba37a3d2009-12-10 14:37:27 -08003199 if (priv->cfg->sku & IWL_SKU_N)
3200 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
3201 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
3202
Reinette Chatre8d9698b2009-10-16 14:25:55 -07003203 hw->sta_data_size = sizeof(struct iwl_station_priv);
Johannes Bergfd1af152010-04-30 11:30:43 -07003204 hw->vif_data_size = sizeof(struct iwl_vif_priv);
3205
Johannes Bergd0fe4782010-08-23 10:46:58 +02003206 for_each_context(priv, ctx) {
3207 hw->wiphy->interface_modes |= ctx->interface_modes;
3208 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
3209 }
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003210
Reinette Chatref6c8f152010-03-12 11:13:26 -08003211 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
Johannes Berg5be83de2009-11-19 00:56:28 +01003212 WIPHY_FLAG_DISABLE_BEACON_HINTS;
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003213
3214 /*
3215 * For now, disable PS by default because it affects
3216 * RX performance significantly.
3217 */
Johannes Berg5be83de2009-11-19 00:56:28 +01003218 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003219
Reinette Chatre1382c712010-02-25 10:02:19 -08003220 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003221 /* we create the 802.11 header and a zero-length SSID element */
Johannes Bergdd7a2502010-04-28 23:33:10 -07003222 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003223
3224 /* Default value; 4 EDCA QOS priorities */
3225 hw->queues = 4;
3226
3227 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
3228
3229 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
3230 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
3231 &priv->bands[IEEE80211_BAND_2GHZ];
3232 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
3233 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
3234 &priv->bands[IEEE80211_BAND_5GHZ];
3235
Wey-Yi Guy5ed540a2011-01-21 15:26:39 -08003236 iwl_leds_init(priv);
3237
Reinette Chatref0b6e2e2009-10-16 14:25:53 -07003238 ret = ieee80211_register_hw(priv->hw);
3239 if (ret) {
3240 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
3241 return ret;
3242 }
3243 priv->mac80211_registered = 1;
3244
3245 return 0;
3246}
3247
3248
Johannes Berg2295c662010-10-23 09:15:41 -07003249int iwlagn_mac_start(struct ieee80211_hw *hw)
Zhu Yib481de92007-09-25 17:54:57 -07003250{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07003251 struct iwl_priv *priv = hw->priv;
Zhu Yi5a66926a2008-01-14 17:46:18 -08003252 int ret;
Zhu Yib481de92007-09-25 17:54:57 -07003253
Tomas Winklere1623442009-01-27 14:27:56 -08003254 IWL_DEBUG_MAC80211(priv, "enter\n");
Zhu Yib481de92007-09-25 17:54:57 -07003255
3256 /* we should be verifying the device is ready to be opened */
3257 mutex_lock(&priv->mutex);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003258 ret = __iwl_up(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003259 mutex_unlock(&priv->mutex);
Zhu Yi5a66926a2008-01-14 17:46:18 -08003260
Zhu Yie655b9f2008-01-24 02:19:38 -08003261 if (ret)
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01003262 return ret;
Zhu Yie655b9f2008-01-24 02:19:38 -08003263
Tomas Winklerc1842d62008-08-04 16:00:43 +08003264 if (iwl_is_rfkill(priv))
3265 goto out;
3266
Tomas Winklere1623442009-01-27 14:27:56 -08003267 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
Zhu Yie655b9f2008-01-24 02:19:38 -08003268
Ron Rindjunskyfe9b6b72008-05-29 16:35:06 +08003269 /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
Zhu Yi5a66926a2008-01-14 17:46:18 -08003270 * mac80211 will not be run successfully. */
Emmanuel Grumbach154b25c2008-06-30 17:23:24 +08003271 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
3272 test_bit(STATUS_READY, &priv->status),
3273 UCODE_READY_TIMEOUT);
3274 if (!ret) {
3275 if (!test_bit(STATUS_READY, &priv->status)) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08003276 IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
Emmanuel Grumbach154b25c2008-06-30 17:23:24 +08003277 jiffies_to_msecs(UCODE_READY_TIMEOUT));
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01003278 return -ETIMEDOUT;
Zhu Yi5a66926a2008-01-14 17:46:18 -08003279 }
Ron Rindjunskyfe9b6b72008-05-29 16:35:06 +08003280 }
Tomas Winkler0a078ff2008-06-30 17:23:26 +08003281
Wey-Yi Guy5ed540a2011-01-21 15:26:39 -08003282 iwlagn_led_enable(priv);
Johannes Berge932a602009-10-02 13:44:03 -07003283
Tomas Winklerc1842d62008-08-04 16:00:43 +08003284out:
Tomas Winkler0a078ff2008-06-30 17:23:26 +08003285 priv->is_open = 1;
Tomas Winklere1623442009-01-27 14:27:56 -08003286 IWL_DEBUG_MAC80211(priv, "leave\n");
Zhu Yib481de92007-09-25 17:54:57 -07003287 return 0;
3288}
3289
Johannes Berg2295c662010-10-23 09:15:41 -07003290void iwlagn_mac_stop(struct ieee80211_hw *hw)
Zhu Yib481de92007-09-25 17:54:57 -07003291{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07003292 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07003293
Tomas Winklere1623442009-01-27 14:27:56 -08003294 IWL_DEBUG_MAC80211(priv, "enter\n");
Mohamed Abbas948c1712007-10-25 17:15:45 +08003295
Johannes Berg19cc1082009-05-08 13:44:36 -07003296 if (!priv->is_open)
Zhu Yie655b9f2008-01-24 02:19:38 -08003297 return;
Zhu Yie655b9f2008-01-24 02:19:38 -08003298
Zhu Yib481de92007-09-25 17:54:57 -07003299 priv->is_open = 0;
Zhu Yi5a66926a2008-01-14 17:46:18 -08003300
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003301 iwl_down(priv);
Zhu Yi5a66926a2008-01-14 17:46:18 -08003302
3303 flush_workqueue(priv->workqueue);
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01003304
Stanislaw Gruszka554d1d02010-12-23 12:38:21 +01003305 /* User space software may expect getting rfkill changes
3306 * even if interface is down */
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01003307 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
Stanislaw Gruszka554d1d02010-12-23 12:38:21 +01003308 iwl_enable_rfkill_int(priv);
Mohamed Abbas948c1712007-10-25 17:15:45 +08003309
Tomas Winklere1623442009-01-27 14:27:56 -08003310 IWL_DEBUG_MAC80211(priv, "leave\n");
Zhu Yib481de92007-09-25 17:54:57 -07003311}
3312
Johannes Berg2295c662010-10-23 09:15:41 -07003313int iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
Zhu Yib481de92007-09-25 17:54:57 -07003314{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07003315 struct iwl_priv *priv = hw->priv;
Zhu Yib481de92007-09-25 17:54:57 -07003316
Tomas Winklere1623442009-01-27 14:27:56 -08003317 IWL_DEBUG_MACDUMP(priv, "enter\n");
Zhu Yib481de92007-09-25 17:54:57 -07003318
Tomas Winklere1623442009-01-27 14:27:56 -08003319 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
Johannes Berge039fa42008-05-15 12:55:29 +02003320 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
Zhu Yib481de92007-09-25 17:54:57 -07003321
Wey-Yi Guy74bcdb32010-03-17 13:34:34 -07003322 if (iwlagn_tx_skb(priv, skb))
Zhu Yib481de92007-09-25 17:54:57 -07003323 dev_kfree_skb_any(skb);
3324
Tomas Winklere1623442009-01-27 14:27:56 -08003325 IWL_DEBUG_MACDUMP(priv, "leave\n");
Reinette Chatre637f8832009-01-19 15:30:32 -08003326 return NETDEV_TX_OK;
Zhu Yib481de92007-09-25 17:54:57 -07003327}
3328
Johannes Berg2295c662010-10-23 09:15:41 -07003329void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
3330 struct ieee80211_vif *vif,
3331 struct ieee80211_key_conf *keyconf,
3332 struct ieee80211_sta *sta,
3333 u32 iv32, u16 *phase1key)
Zhu Yib481de92007-09-25 17:54:57 -07003334{
Tomas Winkler9f586712008-11-12 13:14:05 -08003335 struct iwl_priv *priv = hw->priv;
Johannes Berga194e322010-08-27 08:53:46 -07003336 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3337
Tomas Winklere1623442009-01-27 14:27:56 -08003338 IWL_DEBUG_MAC80211(priv, "enter\n");
Emmanuel Grumbachab885f82008-03-20 15:06:43 +02003339
Johannes Berga194e322010-08-27 08:53:46 -07003340 iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
Johannes Bergb3fbdcf2010-01-21 11:40:47 +01003341 iv32, phase1key);
Emmanuel Grumbachab885f82008-03-20 15:06:43 +02003342
Tomas Winklere1623442009-01-27 14:27:56 -08003343 IWL_DEBUG_MAC80211(priv, "leave\n");
Emmanuel Grumbachab885f82008-03-20 15:06:43 +02003344}
3345
Johannes Berg2295c662010-10-23 09:15:41 -07003346int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3347 struct ieee80211_vif *vif, struct ieee80211_sta *sta,
3348 struct ieee80211_key_conf *key)
Zhu Yib481de92007-09-25 17:54:57 -07003349{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07003350 struct iwl_priv *priv = hw->priv;
Johannes Berga194e322010-08-27 08:53:46 -07003351 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
Johannes Bergc10afb62010-08-23 10:46:43 +02003352 struct iwl_rxon_context *ctx = vif_priv->ctx;
Winkler, Tomas42986792009-01-19 15:30:22 -08003353 int ret;
3354 u8 sta_id;
3355 bool is_default_wep_key = false;
Zhu Yib481de92007-09-25 17:54:57 -07003356
Tomas Winklere1623442009-01-27 14:27:56 -08003357 IWL_DEBUG_MAC80211(priv, "enter\n");
Zhu Yib481de92007-09-25 17:54:57 -07003358
Tomas Winkler90e8e422009-06-19 13:52:42 -07003359 if (priv->cfg->mod_params->sw_crypto) {
Tomas Winklere1623442009-01-27 14:27:56 -08003360 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
Zhu Yib481de92007-09-25 17:54:57 -07003361 return -EOPNOTSUPP;
3362 }
Zhu Yib481de92007-09-25 17:54:57 -07003363
Johannes Berga194e322010-08-27 08:53:46 -07003364 sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
Johannes Berg0af8bca2010-04-30 14:08:00 -07003365 if (sta_id == IWL_INVALID_STATION)
3366 return -EINVAL;
Zhu Yib481de92007-09-25 17:54:57 -07003367
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07003368 mutex_lock(&priv->mutex);
Tomas Winkler2a421b92008-06-12 09:47:10 +08003369 iwl_scan_cancel_timeout(priv, 100);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07003370
Johannes Berga90178fa2010-03-30 02:44:16 -07003371 /*
3372 * If we are getting WEP group key and we didn't receive any key mapping
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07003373 * so far, we are in legacy wep mode (group key only), otherwise we are
3374 * in 1X mode.
Johannes Berga90178fa2010-03-30 02:44:16 -07003375 * In legacy wep mode, we use another host command to the uCode.
3376 */
Johannes Berg97359d12010-08-10 09:46:38 +02003377 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3378 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
Johannes Berg54c80672010-08-18 09:35:21 -07003379 !sta) {
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07003380 if (cmd == SET_KEY)
Johannes Bergc10afb62010-08-23 10:46:43 +02003381 is_default_wep_key = !ctx->key_mapping_keys;
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07003382 else
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +08003383 is_default_wep_key =
3384 (key->hw_key_idx == HW_KEY_DEFAULT);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07003385 }
mabbas052c4b92007-10-25 17:15:43 +08003386
Zhu Yib481de92007-09-25 17:54:57 -07003387 switch (cmd) {
Emmanuel Grumbachdeb09c42008-03-19 16:41:41 -07003388 case SET_KEY:
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07003389 if (is_default_wep_key)
Johannes Berg2995baf2010-08-23 10:46:42 +02003390 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
Emmanuel Grumbachdeb09c42008-03-19 16:41:41 -07003391 else
Johannes Berga194e322010-08-27 08:53:46 -07003392 ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
3393 key, sta_id);
Emmanuel Grumbachdeb09c42008-03-19 16:41:41 -07003394
Tomas Winklere1623442009-01-27 14:27:56 -08003395 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
Zhu Yib481de92007-09-25 17:54:57 -07003396 break;
3397 case DISABLE_KEY:
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07003398 if (is_default_wep_key)
Johannes Bergc10afb62010-08-23 10:46:43 +02003399 ret = iwl_remove_default_wep_key(priv, ctx, key);
Emmanuel Grumbachdeb09c42008-03-19 16:41:41 -07003400 else
Johannes Bergc10afb62010-08-23 10:46:43 +02003401 ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
Emmanuel Grumbachdeb09c42008-03-19 16:41:41 -07003402
Tomas Winklere1623442009-01-27 14:27:56 -08003403 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
Zhu Yib481de92007-09-25 17:54:57 -07003404 break;
3405 default:
Emmanuel Grumbachdeb09c42008-03-19 16:41:41 -07003406 ret = -EINVAL;
Zhu Yib481de92007-09-25 17:54:57 -07003407 }
3408
Johannes Berg72e15d72010-02-19 11:42:32 -08003409 mutex_unlock(&priv->mutex);
Tomas Winklere1623442009-01-27 14:27:56 -08003410 IWL_DEBUG_MAC80211(priv, "leave\n");
Zhu Yib481de92007-09-25 17:54:57 -07003411
Emmanuel Grumbachdeb09c42008-03-19 16:41:41 -07003412 return ret;
Zhu Yib481de92007-09-25 17:54:57 -07003413}
3414
Johannes Berg2295c662010-10-23 09:15:41 -07003415int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
3416 struct ieee80211_vif *vif,
3417 enum ieee80211_ampdu_mlme_action action,
Johannes Berg0b01f032011-01-18 13:51:05 +01003418 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
3419 u8 buf_size)
Tomas Winklerd783b062008-07-18 13:53:02 +08003420{
3421 struct iwl_priv *priv = hw->priv;
Johannes Berg4620fef2010-06-16 03:30:27 -07003422 int ret = -EINVAL;
Tomas Winklerd783b062008-07-18 13:53:02 +08003423
Tomas Winklere1623442009-01-27 14:27:56 -08003424 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
Johannes Berge1749612008-10-27 15:59:26 -07003425 sta->addr, tid);
Tomas Winklerd783b062008-07-18 13:53:02 +08003426
3427 if (!(priv->cfg->sku & IWL_SKU_N))
3428 return -EACCES;
3429
Johannes Berg4620fef2010-06-16 03:30:27 -07003430 mutex_lock(&priv->mutex);
3431
Tomas Winklerd783b062008-07-18 13:53:02 +08003432 switch (action) {
3433 case IEEE80211_AMPDU_RX_START:
Tomas Winklere1623442009-01-27 14:27:56 -08003434 IWL_DEBUG_HT(priv, "start Rx\n");
Johannes Berg4620fef2010-06-16 03:30:27 -07003435 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
3436 break;
Tomas Winklerd783b062008-07-18 13:53:02 +08003437 case IEEE80211_AMPDU_RX_STOP:
Tomas Winklere1623442009-01-27 14:27:56 -08003438 IWL_DEBUG_HT(priv, "stop Rx\n");
Johannes Berg619753f2010-04-30 11:30:46 -07003439 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
Wey-Yi Guy5c2207c2009-03-17 21:51:43 -07003440 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Johannes Berg4620fef2010-06-16 03:30:27 -07003441 ret = 0;
3442 break;
Tomas Winklerd783b062008-07-18 13:53:02 +08003443 case IEEE80211_AMPDU_TX_START:
Tomas Winklere1623442009-01-27 14:27:56 -08003444 IWL_DEBUG_HT(priv, "start Tx\n");
Johannes Berg619753f2010-04-30 11:30:46 -07003445 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
Wey-Yi Guyd5a0ffa2010-03-04 13:38:59 -08003446 if (ret == 0) {
3447 priv->_agn.agg_tids_count++;
3448 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3449 priv->_agn.agg_tids_count);
3450 }
Johannes Berg4620fef2010-06-16 03:30:27 -07003451 break;
Tomas Winklerd783b062008-07-18 13:53:02 +08003452 case IEEE80211_AMPDU_TX_STOP:
Tomas Winklere1623442009-01-27 14:27:56 -08003453 IWL_DEBUG_HT(priv, "stop Tx\n");
Johannes Berg619753f2010-04-30 11:30:46 -07003454 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
Wey-Yi Guyd5a0ffa2010-03-04 13:38:59 -08003455 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
3456 priv->_agn.agg_tids_count--;
3457 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
3458 priv->_agn.agg_tids_count);
3459 }
Wey-Yi Guy5c2207c2009-03-17 21:51:43 -07003460 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
Johannes Berg4620fef2010-06-16 03:30:27 -07003461 ret = 0;
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07003462 if (priv->cfg->ht_params &&
3463 priv->cfg->ht_params->use_rts_for_aggregation) {
Johannes Berg94597ab2010-08-09 10:57:02 -07003464 struct iwl_station_priv *sta_priv =
3465 (void *) sta->drv_priv;
3466 /*
3467 * switch off RTS/CTS if it was previously enabled
3468 */
3469
3470 sta_priv->lq_sta.lq.general_params.flags &=
3471 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
Johannes Berg7e6a5882010-08-23 10:46:46 +02003472 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3473 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
Johannes Berg94597ab2010-08-09 10:57:02 -07003474 }
Johannes Berg4620fef2010-06-16 03:30:27 -07003475 break;
Wey-Yi Guyf0527972010-01-08 10:04:41 -08003476 case IEEE80211_AMPDU_TX_OPERATIONAL:
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07003477 if (priv->cfg->ht_params &&
3478 priv->cfg->ht_params->use_rts_for_aggregation) {
Johannes Berg94597ab2010-08-09 10:57:02 -07003479 struct iwl_station_priv *sta_priv =
3480 (void *) sta->drv_priv;
3481
Wey-Yi Guycfecc6b2010-06-18 11:33:15 -07003482 /*
3483 * switch to RTS/CTS if it is the prefer protection
3484 * method for HT traffic
3485 */
Johannes Berg94597ab2010-08-09 10:57:02 -07003486
3487 sta_priv->lq_sta.lq.general_params.flags |=
3488 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
Johannes Berg7e6a5882010-08-23 10:46:46 +02003489 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
3490 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
Wey-Yi Guycfecc6b2010-06-18 11:33:15 -07003491 }
3492 ret = 0;
Tomas Winklerd783b062008-07-18 13:53:02 +08003493 break;
3494 }
Johannes Berg4620fef2010-06-16 03:30:27 -07003495 mutex_unlock(&priv->mutex);
3496
3497 return ret;
Tomas Winklerd783b062008-07-18 13:53:02 +08003498}
Tomas Winkler9f586712008-11-12 13:14:05 -08003499
Johannes Berg2295c662010-10-23 09:15:41 -07003500int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
3501 struct ieee80211_vif *vif,
3502 struct ieee80211_sta *sta)
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08003503{
3504 struct iwl_priv *priv = hw->priv;
3505 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
Johannes Berga194e322010-08-27 08:53:46 -07003506 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
Johannes Bergeafdfbd32010-04-29 04:43:04 -07003507 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08003508 int ret;
3509 u8 sta_id;
3510
3511 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3512 sta->addr);
Reinette Chatreda5ae1c2010-05-28 09:28:39 -07003513 mutex_lock(&priv->mutex);
3514 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3515 sta->addr);
3516 sta_priv->common.sta_id = IWL_INVALID_STATION;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08003517
3518 atomic_set(&sta_priv->pending_frames, 0);
3519 if (vif->type == NL80211_IFTYPE_AP)
3520 sta_priv->client = true;
3521
Johannes Berga194e322010-08-27 08:53:46 -07003522 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
Johannes Berg238d7812010-08-23 10:46:45 +02003523 is_ap, sta, &sta_id);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08003524 if (ret) {
3525 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3526 sta->addr, ret);
3527 /* Should we return success if return code is EEXIST ? */
Reinette Chatreda5ae1c2010-05-28 09:28:39 -07003528 mutex_unlock(&priv->mutex);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08003529 return ret;
3530 }
3531
Johannes Bergfd1af152010-04-30 11:30:43 -07003532 sta_priv->common.sta_id = sta_id;
3533
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08003534 /* Initialize rate scaling */
Frans Pop91dd6c22010-03-24 14:19:58 -07003535 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08003536 sta->addr);
3537 iwl_rs_rate_init(priv, sta, sta_id);
Reinette Chatreda5ae1c2010-05-28 09:28:39 -07003538 mutex_unlock(&priv->mutex);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08003539
Johannes Bergfd1af152010-04-30 11:30:43 -07003540 return 0;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08003541}
3542
Johannes Berg2295c662010-10-23 09:15:41 -07003543void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
3544 struct ieee80211_channel_switch *ch_switch)
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003545{
3546 struct iwl_priv *priv = hw->priv;
3547 const struct iwl_channel_info *ch_info;
3548 struct ieee80211_conf *conf = &hw->conf;
Shanyu Zhaoaa2dc6b2010-07-28 13:40:39 -07003549 struct ieee80211_channel *channel = ch_switch->channel;
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003550 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
Johannes Berg246ed352010-08-23 10:46:32 +02003551 /*
3552 * MULTI-FIXME
3553 * When we add support for multiple interfaces, we need to
3554 * revisit this. The channel switch command in the device
3555 * only affects the BSS context, but what does that really
3556 * mean? And what if we get a CSA on the second interface?
3557 * This needs a lot of work.
3558 */
3559 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003560 u16 ch;
3561 unsigned long flags = 0;
3562
3563 IWL_DEBUG_MAC80211(priv, "enter\n");
3564
3565 if (iwl_is_rfkill(priv))
3566 goto out_exit;
3567
3568 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3569 test_bit(STATUS_SCANNING, &priv->status))
3570 goto out_exit;
3571
Johannes Berg246ed352010-08-23 10:46:32 +02003572 if (!iwl_is_associated_ctx(ctx))
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003573 goto out_exit;
3574
3575 /* channel switch in progress */
3576 if (priv->switch_rxon.switch_in_progress == true)
3577 goto out_exit;
3578
3579 mutex_lock(&priv->mutex);
3580 if (priv->cfg->ops->lib->set_channel_switch) {
3581
Shanyu Zhaoaa2dc6b2010-07-28 13:40:39 -07003582 ch = channel->hw_value;
Johannes Berg246ed352010-08-23 10:46:32 +02003583 if (le16_to_cpu(ctx->active.channel) != ch) {
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003584 ch_info = iwl_get_channel_info(priv,
Shanyu Zhaoaa2dc6b2010-07-28 13:40:39 -07003585 channel->band,
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003586 ch);
3587 if (!is_channel_valid(ch_info)) {
3588 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3589 goto out;
3590 }
3591 spin_lock_irqsave(&priv->lock, flags);
3592
3593 priv->current_ht_config.smps = conf->smps_mode;
3594
3595 /* Configure HT40 channels */
Johannes Berg7e6a5882010-08-23 10:46:46 +02003596 ctx->ht.enabled = conf_is_ht(conf);
3597 if (ctx->ht.enabled) {
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003598 if (conf_is_ht40_minus(conf)) {
Johannes Berg7e6a5882010-08-23 10:46:46 +02003599 ctx->ht.extension_chan_offset =
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003600 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
Johannes Berg7e6a5882010-08-23 10:46:46 +02003601 ctx->ht.is_40mhz = true;
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003602 } else if (conf_is_ht40_plus(conf)) {
Johannes Berg7e6a5882010-08-23 10:46:46 +02003603 ctx->ht.extension_chan_offset =
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003604 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
Johannes Berg7e6a5882010-08-23 10:46:46 +02003605 ctx->ht.is_40mhz = true;
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003606 } else {
Johannes Berg7e6a5882010-08-23 10:46:46 +02003607 ctx->ht.extension_chan_offset =
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003608 IEEE80211_HT_PARAM_CHA_SEC_NONE;
Johannes Berg7e6a5882010-08-23 10:46:46 +02003609 ctx->ht.is_40mhz = false;
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003610 }
3611 } else
Johannes Berg7e6a5882010-08-23 10:46:46 +02003612 ctx->ht.is_40mhz = false;
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003613
Johannes Berg246ed352010-08-23 10:46:32 +02003614 if ((le16_to_cpu(ctx->staging.channel) != ch))
3615 ctx->staging.flags = 0;
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003616
Johannes Berg246ed352010-08-23 10:46:32 +02003617 iwl_set_rxon_channel(priv, channel, ctx);
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003618 iwl_set_rxon_ht(priv, ht_conf);
Johannes Berg246ed352010-08-23 10:46:32 +02003619 iwl_set_flags_for_band(priv, ctx, channel->band,
Johannes Berg8bd413e2010-08-23 10:46:40 +02003620 ctx->vif);
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003621 spin_unlock_irqrestore(&priv->lock, flags);
3622
3623 iwl_set_rate(priv);
3624 /*
3625 * at this point, staging_rxon has the
3626 * configuration for channel switch
3627 */
3628 if (priv->cfg->ops->lib->set_channel_switch(priv,
3629 ch_switch))
3630 priv->switch_rxon.switch_in_progress = false;
3631 }
3632 }
3633out:
3634 mutex_unlock(&priv->mutex);
3635out_exit:
3636 if (!priv->switch_rxon.switch_in_progress)
Johannes Berg8bd413e2010-08-23 10:46:40 +02003637 ieee80211_chswitch_done(ctx->vif, false);
Wey-Yi Guy79d07322010-05-06 08:54:11 -07003638 IWL_DEBUG_MAC80211(priv, "leave\n");
3639}
3640
Johannes Berg2295c662010-10-23 09:15:41 -07003641void iwlagn_configure_filter(struct ieee80211_hw *hw,
3642 unsigned int changed_flags,
3643 unsigned int *total_flags,
3644 u64 multicast)
Johannes Berg8b8ab9d2010-08-17 11:24:01 +02003645{
3646 struct iwl_priv *priv = hw->priv;
3647 __le32 filter_or = 0, filter_nand = 0;
Johannes Berg246ed352010-08-23 10:46:32 +02003648 struct iwl_rxon_context *ctx;
Johannes Berg8b8ab9d2010-08-17 11:24:01 +02003649
3650#define CHK(test, flag) do { \
3651 if (*total_flags & (test)) \
3652 filter_or |= (flag); \
3653 else \
3654 filter_nand |= (flag); \
3655 } while (0)
3656
3657 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3658 changed_flags, *total_flags);
3659
3660 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
Johannes Bergbdb84fe2010-12-15 06:07:56 -08003661 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3662 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
Johannes Berg8b8ab9d2010-08-17 11:24:01 +02003663 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3664
3665#undef CHK
3666
3667 mutex_lock(&priv->mutex);
3668
Johannes Berg246ed352010-08-23 10:46:32 +02003669 for_each_context(priv, ctx) {
3670 ctx->staging.filter_flags &= ~filter_nand;
3671 ctx->staging.filter_flags |= filter_or;
Stanislaw Gruszka749ff4ef2010-10-22 17:04:27 +02003672
3673 /*
3674 * Not committing directly because hardware can perform a scan,
3675 * but we'll eventually commit the filter flags change anyway.
3676 */
Johannes Berg246ed352010-08-23 10:46:32 +02003677 }
Johannes Berg8b8ab9d2010-08-17 11:24:01 +02003678
3679 mutex_unlock(&priv->mutex);
3680
3681 /*
3682 * Receiving all multicast frames is always enabled by the
3683 * default flags setup in iwl_connection_init_rx_config()
3684 * since we currently do not support programming multicast
3685 * filters into the device.
3686 */
3687 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3688 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3689}
3690
Johannes Berg2295c662010-10-23 09:15:41 -07003691void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
Wey-Yi Guy716c74b2010-06-24 13:22:36 -07003692{
3693 struct iwl_priv *priv = hw->priv;
3694
3695 mutex_lock(&priv->mutex);
3696 IWL_DEBUG_MAC80211(priv, "enter\n");
3697
3698 /* do not support "flush" */
3699 if (!priv->cfg->ops->lib->txfifo_flush)
3700 goto done;
3701
3702 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3703 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3704 goto done;
3705 }
3706 if (iwl_is_rfkill(priv)) {
3707 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3708 goto done;
3709 }
3710
3711 /*
3712 * mac80211 will not push any more frames for transmit
3713 * until the flush is completed
3714 */
3715 if (drop) {
3716 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3717 if (priv->cfg->ops->lib->txfifo_flush(priv, IWL_DROP_ALL)) {
3718 IWL_ERR(priv, "flush request fail\n");
3719 goto done;
3720 }
3721 }
3722 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3723 iwlagn_wait_tx_queue_empty(priv);
3724done:
3725 mutex_unlock(&priv->mutex);
3726 IWL_DEBUG_MAC80211(priv, "leave\n");
3727}
3728
Zhu Yib481de92007-09-25 17:54:57 -07003729/*****************************************************************************
3730 *
Zhu Yib481de92007-09-25 17:54:57 -07003731 * driver setup and teardown
3732 *
3733 *****************************************************************************/
3734
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08003735static void iwl_setup_deferred_work(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07003736{
Reinette Chatred21050c2009-02-13 11:51:18 -08003737 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
Zhu Yib481de92007-09-25 17:54:57 -07003738
3739 init_waitqueue_head(&priv->wait_command_queue);
3740
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003741 INIT_WORK(&priv->restart, iwl_bg_restart);
3742 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003743 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
Emmanuel Grumbach16e727e2008-06-12 09:46:52 +08003744 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
Wey-Yi Guy65550632010-06-24 13:18:35 -07003745 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
Wey-Yi Guybee008b2010-08-23 07:57:04 -07003746 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
Wey-Yi Guyfbba9412010-08-23 07:57:10 -07003747 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
Tomas Winkler4a4a9e82008-05-29 16:34:54 +08003748 INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3749 INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
Tomas Winkler2a421b92008-06-12 09:47:10 +08003750
Tomas Winkler2a421b92008-06-12 09:47:10 +08003751 iwl_setup_scan_deferred_work(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003752
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08003753 if (priv->cfg->ops->lib->setup_deferred_work)
3754 priv->cfg->ops->lib->setup_deferred_work(priv);
3755
3756 init_timer(&priv->statistics_periodic);
3757 priv->statistics_periodic.data = (unsigned long)priv;
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003758 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
Zhu Yib481de92007-09-25 17:54:57 -07003759
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -08003760 init_timer(&priv->ucode_trace);
3761 priv->ucode_trace.data = (unsigned long)priv;
3762 priv->ucode_trace.function = iwl_bg_ucode_trace;
3763
Stanislaw Gruszka22de94d2010-12-03 15:41:48 +01003764 init_timer(&priv->watchdog);
3765 priv->watchdog.data = (unsigned long)priv;
3766 priv->watchdog.function = iwl_bg_watchdog;
Wey-Yi Guyb74e31a2010-03-01 17:23:50 -08003767
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07003768 if (!priv->cfg->base_params->use_isr_legacy)
Mohamed Abbasef850d72009-05-22 11:01:50 -07003769 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3770 iwl_irq_tasklet, (unsigned long)priv);
3771 else
3772 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3773 iwl_irq_tasklet_legacy, (unsigned long)priv);
Zhu Yib481de92007-09-25 17:54:57 -07003774}
3775
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08003776static void iwl_cancel_deferred_work(struct iwl_priv *priv)
Zhu Yib481de92007-09-25 17:54:57 -07003777{
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08003778 if (priv->cfg->ops->lib->cancel_deferred_work)
3779 priv->cfg->ops->lib->cancel_deferred_work(priv);
Zhu Yib481de92007-09-25 17:54:57 -07003780
Joonwoo Park3ae6a052007-11-29 10:43:16 +09003781 cancel_delayed_work_sync(&priv->init_alive_start);
Zhu Yib481de92007-09-25 17:54:57 -07003782 cancel_delayed_work(&priv->alive_start);
Wey-Yi Guy815e6292010-06-03 10:14:01 -07003783 cancel_work_sync(&priv->run_time_calib_work);
Zhu Yib481de92007-09-25 17:54:57 -07003784 cancel_work_sync(&priv->beacon_update);
Stanislaw Gruszkae7e16b92010-09-13 14:46:41 +02003785
3786 iwl_cancel_scan_deferred_work(priv);
3787
Wey-Yi Guybee008b2010-08-23 07:57:04 -07003788 cancel_work_sync(&priv->bt_full_concurrency);
Wey-Yi Guyfbba9412010-08-23 07:57:10 -07003789 cancel_work_sync(&priv->bt_runtime_config);
Stanislaw Gruszkae7e16b92010-09-13 14:46:41 +02003790
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08003791 del_timer_sync(&priv->statistics_periodic);
Wey-Yi Guya9e1cb62009-12-10 14:37:26 -08003792 del_timer_sync(&priv->ucode_trace);
Zhu Yib481de92007-09-25 17:54:57 -07003793}
3794
Reinette Chatre89f186a2009-10-30 14:36:11 -07003795static void iwl_init_hw_rates(struct iwl_priv *priv,
3796 struct ieee80211_rate *rates)
3797{
3798 int i;
3799
3800 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3801 rates[i].bitrate = iwl_rates[i].ieee * 5;
3802 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3803 rates[i].hw_value_short = i;
3804 rates[i].flags = 0;
3805 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3806 /*
3807 * If CCK != 1M then set short preamble rate flag.
3808 */
3809 rates[i].flags |=
3810 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3811 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3812 }
3813 }
3814}
3815
3816static int iwl_init_drv(struct iwl_priv *priv)
3817{
3818 int ret;
3819
Reinette Chatre89f186a2009-10-30 14:36:11 -07003820 spin_lock_init(&priv->sta_lock);
3821 spin_lock_init(&priv->hcmd_lock);
3822
3823 INIT_LIST_HEAD(&priv->free_frames);
3824
3825 mutex_init(&priv->mutex);
Reinette Chatred2dfe6d2010-02-18 22:03:04 -08003826 mutex_init(&priv->sync_cmd_mutex);
Reinette Chatre89f186a2009-10-30 14:36:11 -07003827
Reinette Chatre89f186a2009-10-30 14:36:11 -07003828 priv->ieee_channels = NULL;
3829 priv->ieee_rates = NULL;
3830 priv->band = IEEE80211_BAND_2GHZ;
3831
3832 priv->iw_mode = NL80211_IFTYPE_STATION;
Johannes Bergba37a3d2009-12-10 14:37:27 -08003833 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
Wey-Yi Guya13d2762010-01-22 14:22:42 -08003834 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
Wey-Yi Guyd5a0ffa2010-03-04 13:38:59 -08003835 priv->_agn.agg_tids_count = 0;
Reinette Chatre89f186a2009-10-30 14:36:11 -07003836
Wey-Yi Guy8a472da2010-02-18 22:03:06 -08003837 /* initialize force reset */
3838 priv->force_reset[IWL_RF_RESET].reset_duration =
3839 IWL_DELAY_NEXT_FORCE_RF_RESET;
3840 priv->force_reset[IWL_FW_RESET].reset_duration =
3841 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
Reinette Chatre89f186a2009-10-30 14:36:11 -07003842
3843 /* Choose which receivers/antennas to use */
3844 if (priv->cfg->ops->hcmd->set_rxon_chain)
Johannes Berg246ed352010-08-23 10:46:32 +02003845 priv->cfg->ops->hcmd->set_rxon_chain(priv,
3846 &priv->contexts[IWL_RXON_CTX_BSS]);
Reinette Chatre89f186a2009-10-30 14:36:11 -07003847
3848 iwl_init_scan_params(priv);
3849
Wey-Yi Guy22bf59a2010-08-23 07:57:11 -07003850 /* init bt coex */
Wey-Yi Guy7cb1b082010-10-06 08:10:00 -07003851 if (priv->cfg->bt_params &&
3852 priv->cfg->bt_params->advanced_bt_coexist) {
Wey-Yi Guyb6e116e2010-08-23 07:57:14 -07003853 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3854 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3855 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
Wey-Yi Guy22bf59a2010-08-23 07:57:11 -07003856 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3857 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3858 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
Wey-Yi Guy22bf59a2010-08-23 07:57:11 -07003859 }
3860
Reinette Chatre89f186a2009-10-30 14:36:11 -07003861 /* Set the tx_power_user_lmt to the lowest power level
3862 * this value will get overwritten by channel max power avg
3863 * from eeprom */
Wey-Yi Guyb744cb72010-03-23 11:37:59 -07003864 priv->tx_power_user_lmt = IWLAGN_TX_POWER_TARGET_POWER_MIN;
Stanislaw Gruszkaa25a66a2010-10-22 17:04:26 +02003865 priv->tx_power_next = IWLAGN_TX_POWER_TARGET_POWER_MIN;
Reinette Chatre89f186a2009-10-30 14:36:11 -07003866
3867 ret = iwl_init_channel_map(priv);
3868 if (ret) {
3869 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3870 goto err;
3871 }
3872
3873 ret = iwlcore_init_geos(priv);
3874 if (ret) {
3875 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3876 goto err_free_channel_map;
3877 }
3878 iwl_init_hw_rates(priv, priv->ieee_rates);
3879
3880 return 0;
3881
3882err_free_channel_map:
3883 iwl_free_channel_map(priv);
3884err:
3885 return ret;
3886}
3887
3888static void iwl_uninit_drv(struct iwl_priv *priv)
3889{
3890 iwl_calib_free_results(priv);
3891 iwlcore_free_geos(priv);
3892 iwl_free_channel_map(priv);
Johannes Berg811ecc92010-04-06 04:12:41 -07003893 kfree(priv->scan_cmd);
Reinette Chatre89f186a2009-10-30 14:36:11 -07003894}
3895
Johannes Bergae79d232010-11-10 09:56:38 -08003896#ifdef CONFIG_IWL5000
Johannes Bergdc21b542010-10-23 09:15:39 -07003897struct ieee80211_ops iwlagn_hw_ops = {
Johannes Berg2295c662010-10-23 09:15:41 -07003898 .tx = iwlagn_mac_tx,
3899 .start = iwlagn_mac_start,
3900 .stop = iwlagn_mac_stop,
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003901 .add_interface = iwl_mac_add_interface,
3902 .remove_interface = iwl_mac_remove_interface,
Johannes Bergd4daaea2010-10-23 09:15:43 -07003903 .change_interface = iwl_mac_change_interface,
Johannes Berg2295c662010-10-23 09:15:41 -07003904 .config = iwlagn_mac_config,
Johannes Berg8b8ab9d2010-08-17 11:24:01 +02003905 .configure_filter = iwlagn_configure_filter,
Johannes Berg2295c662010-10-23 09:15:41 -07003906 .set_key = iwlagn_mac_set_key,
3907 .update_tkip_key = iwlagn_mac_update_tkip_key,
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003908 .conf_tx = iwl_mac_conf_tx,
Johannes Berg2295c662010-10-23 09:15:41 -07003909 .bss_info_changed = iwlagn_bss_info_changed,
3910 .ampdu_action = iwlagn_mac_ampdu_action,
Johannes Berg6ab10ff2009-11-13 11:56:37 -08003911 .hw_scan = iwl_mac_hw_scan,
Johannes Berg2295c662010-10-23 09:15:41 -07003912 .sta_notify = iwlagn_mac_sta_notify,
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08003913 .sta_add = iwlagn_mac_sta_add,
3914 .sta_remove = iwl_mac_sta_remove,
Johannes Berg2295c662010-10-23 09:15:41 -07003915 .channel_switch = iwlagn_mac_channel_switch,
3916 .flush = iwlagn_mac_flush,
Johannes Berga85d7cc2010-07-31 08:34:10 -07003917 .tx_last_beacon = iwl_mac_tx_last_beacon,
Zhu Yib481de92007-09-25 17:54:57 -07003918};
Johannes Bergae79d232010-11-10 09:56:38 -08003919#endif
Zhu Yib481de92007-09-25 17:54:57 -07003920
Wey-Yi Guy3867fe02010-07-31 08:34:05 -07003921static void iwl_hw_detect(struct iwl_priv *priv)
3922{
3923 priv->hw_rev = _iwl_read32(priv, CSR_HW_REV);
3924 priv->hw_wa_rev = _iwl_read32(priv, CSR_HW_REV_WA_REG);
3925 pci_read_config_byte(priv->pci_dev, PCI_REVISION_ID, &priv->rev_id);
Wey-Yi Guy49ded762010-07-31 08:34:06 -07003926 IWL_DEBUG_INFO(priv, "HW Revision ID = 0x%X\n", priv->rev_id);
Wey-Yi Guy3867fe02010-07-31 08:34:05 -07003927}
3928
Wey-Yi Guy07d4f1a2010-07-31 08:34:08 -07003929static int iwl_set_hw_params(struct iwl_priv *priv)
3930{
3931 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
3932 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
3933 if (priv->cfg->mod_params->amsdu_size_8K)
3934 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
3935 else
3936 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
3937
3938 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3939
3940 if (priv->cfg->mod_params->disable_11n)
3941 priv->cfg->sku &= ~IWL_SKU_N;
3942
3943 /* Device-specific setup */
3944 return priv->cfg->ops->lib->set_hw_params(priv);
3945}
3946
Johannes Berge72f3682010-08-23 10:46:51 +02003947static const u8 iwlagn_bss_ac_to_fifo[] = {
3948 IWL_TX_FIFO_VO,
3949 IWL_TX_FIFO_VI,
3950 IWL_TX_FIFO_BE,
3951 IWL_TX_FIFO_BK,
3952};
3953
3954static const u8 iwlagn_bss_ac_to_queue[] = {
3955 0, 1, 2, 3,
3956};
3957
3958static const u8 iwlagn_pan_ac_to_fifo[] = {
3959 IWL_TX_FIFO_VO_IPAN,
3960 IWL_TX_FIFO_VI_IPAN,
3961 IWL_TX_FIFO_BE_IPAN,
3962 IWL_TX_FIFO_BK_IPAN,
3963};
3964
3965static const u8 iwlagn_pan_ac_to_queue[] = {
3966 7, 6, 5, 4,
3967};
3968
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07003969static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Zhu Yib481de92007-09-25 17:54:57 -07003970{
Johannes Berg246ed352010-08-23 10:46:32 +02003971 int err = 0, i;
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07003972 struct iwl_priv *priv;
Zhu Yib481de92007-09-25 17:54:57 -07003973 struct ieee80211_hw *hw;
Tomas Winkler82b9a122008-03-04 18:09:30 -08003974 struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
Mohamed Abbas0359fac2008-03-28 16:21:08 -07003975 unsigned long flags;
Wey-Yi Guyc6fa17e2010-07-15 05:58:30 -07003976 u16 pci_cmd, num_mac;
Zhu Yib481de92007-09-25 17:54:57 -07003977
Assaf Krauss316c30d2008-03-14 10:38:46 -07003978 /************************
3979 * 1. Allocating HW data
3980 ************************/
3981
Cahill, Ben M6440adb2007-11-29 11:09:55 +08003982 /* Disabling hardware scan means that mac80211 will perform scans
3983 * "the hard way", rather than using device's scan. */
Assaf Krauss1ea87392008-03-18 14:57:50 -07003984 if (cfg->mod_params->disable_hw_scan) {
Wey-Yi Guy72645ef2010-10-06 07:42:43 -07003985 dev_printk(KERN_DEBUG, &(pdev->dev),
3986 "sw scan support is deprecated\n");
Johannes Bergae79d232010-11-10 09:56:38 -08003987#ifdef CONFIG_IWL5000
Johannes Bergdc21b542010-10-23 09:15:39 -07003988 iwlagn_hw_ops.hw_scan = NULL;
Johannes Bergae79d232010-11-10 09:56:38 -08003989#endif
Johannes Berg2295c662010-10-23 09:15:41 -07003990#ifdef CONFIG_IWL4965
3991 iwl4965_hw_ops.hw_scan = NULL;
3992#endif
Zhu Yib481de92007-09-25 17:54:57 -07003993 }
3994
Johannes Bergdc21b542010-10-23 09:15:39 -07003995 hw = iwl_alloc_all(cfg);
Assaf Krauss1d0a0822008-03-14 10:38:48 -07003996 if (!hw) {
Zhu Yib481de92007-09-25 17:54:57 -07003997 err = -ENOMEM;
3998 goto out;
3999 }
Assaf Krauss1d0a0822008-03-14 10:38:48 -07004000 priv = hw->priv;
4001 /* At this point both hw and priv are allocated. */
4002
Johannes Berg246ed352010-08-23 10:46:32 +02004003 /*
4004 * The default context is always valid,
4005 * more may be discovered when firmware
4006 * is loaded.
4007 */
4008 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
4009
4010 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
4011 priv->contexts[i].ctxid = i;
4012
Johannes Berg763cc3b2010-09-03 06:32:21 -07004013 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
4014 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
Johannes Berg8f2d3d22010-08-23 10:46:37 +02004015 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
4016 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
4017 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
Johannes Berg8dfdb9d2010-08-23 10:46:38 +02004018 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
Johannes Berg2995baf2010-08-23 10:46:42 +02004019 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
Johannes Bergc10afb62010-08-23 10:46:43 +02004020 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
Johannes Berge72f3682010-08-23 10:46:51 +02004021 priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
4022 priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
Johannes Bergd0fe4782010-08-23 10:46:58 +02004023 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
4024 BIT(NL80211_IFTYPE_ADHOC);
4025 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
4026 BIT(NL80211_IFTYPE_STATION);
Johannes Berg2295c662010-10-23 09:15:41 -07004027 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
Johannes Bergd0fe4782010-08-23 10:46:58 +02004028 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
4029 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
4030 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
Johannes Bergece9c4e2010-08-23 10:46:49 +02004031
4032 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
4033 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd = REPLY_WIPAN_RXON_TIMING;
4034 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd = REPLY_WIPAN_RXON_ASSOC;
4035 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
4036 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
4037 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
4038 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
4039 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
Johannes Berge72f3682010-08-23 10:46:51 +02004040 priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
4041 priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
4042 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
Johannes Bergd0fe4782010-08-23 10:46:58 +02004043 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
4044 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
4045 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
4046 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
4047 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
Johannes Bergece9c4e2010-08-23 10:46:49 +02004048
4049 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
Johannes Berg8f2d3d22010-08-23 10:46:37 +02004050
Zhu Yib481de92007-09-25 17:54:57 -07004051 SET_IEEE80211_DEV(hw, &pdev->dev);
4052
Tomas Winklere1623442009-01-27 14:27:56 -08004053 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
Tomas Winkler82b9a122008-03-04 18:09:30 -08004054 priv->cfg = cfg;
Zhu Yib481de92007-09-25 17:54:57 -07004055 priv->pci_dev = pdev;
Mohamed Abbas40cefda2009-05-22 11:01:52 -07004056 priv->inta_mask = CSR_INI_SET_MASK;
Assaf Krauss316c30d2008-03-14 10:38:46 -07004057
Wey-Yi Guybee008b2010-08-23 07:57:04 -07004058 /* is antenna coupling more than 35dB ? */
4059 priv->bt_ant_couple_ok =
4060 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
4061 true : false;
4062
Wey-Yi Guy9f28ebc2010-11-26 13:24:19 -08004063 /* enable/disable bt channel inhibition */
Wey-Yi Guyf37837c2010-08-23 07:57:12 -07004064 priv->bt_ch_announce = iwlagn_bt_ch_announce;
Wey-Yi Guy9f28ebc2010-11-26 13:24:19 -08004065 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
4066 (priv->bt_ch_announce) ? "On" : "Off");
Wey-Yi Guyf37837c2010-08-23 07:57:12 -07004067
Wey-Yi Guy20594eb2009-08-07 15:41:39 -07004068 if (iwl_alloc_traffic_mem(priv))
4069 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
Zhu Yib481de92007-09-25 17:54:57 -07004070
Assaf Krauss316c30d2008-03-14 10:38:46 -07004071 /**************************
4072 * 2. Initializing PCI bus
4073 **************************/
John W. Linville1a7123c2010-08-05 14:39:31 -04004074 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
4075 PCIE_LINK_STATE_CLKPM);
4076
Assaf Krauss316c30d2008-03-14 10:38:46 -07004077 if (pci_enable_device(pdev)) {
4078 err = -ENODEV;
4079 goto out_ieee80211_free_hw;
4080 }
4081
4082 pci_set_master(pdev);
4083
Winkler, Tomas093d874c2008-09-26 15:09:34 +08004084 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
Assaf Krauss316c30d2008-03-14 10:38:46 -07004085 if (!err)
Winkler, Tomas093d874c2008-09-26 15:09:34 +08004086 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
Ron Rindjunskycc2a8ea2008-04-21 15:41:59 -07004087 if (err) {
Winkler, Tomas093d874c2008-09-26 15:09:34 +08004088 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
Ron Rindjunskycc2a8ea2008-04-21 15:41:59 -07004089 if (!err)
Winkler, Tomas093d874c2008-09-26 15:09:34 +08004090 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
Ron Rindjunskycc2a8ea2008-04-21 15:41:59 -07004091 /* both attempts failed: */
Assaf Krauss316c30d2008-03-14 10:38:46 -07004092 if (err) {
Tomas Winkler978785a2008-12-19 10:37:31 +08004093 IWL_WARN(priv, "No suitable DMA available.\n");
Assaf Krauss316c30d2008-03-14 10:38:46 -07004094 goto out_pci_disable_device;
Ron Rindjunskycc2a8ea2008-04-21 15:41:59 -07004095 }
Assaf Krauss316c30d2008-03-14 10:38:46 -07004096 }
4097
4098 err = pci_request_regions(pdev, DRV_NAME);
4099 if (err)
4100 goto out_pci_disable_device;
4101
4102 pci_set_drvdata(pdev, priv);
4103
Assaf Krauss316c30d2008-03-14 10:38:46 -07004104
4105 /***********************
4106 * 3. Read REV register
4107 ***********************/
4108 priv->hw_base = pci_iomap(pdev, 0, 0);
4109 if (!priv->hw_base) {
4110 err = -ENODEV;
4111 goto out_pci_release_regions;
4112 }
4113
Tomas Winklere1623442009-01-27 14:27:56 -08004114 IWL_DEBUG_INFO(priv, "pci_resource_len = 0x%08llx\n",
Assaf Krauss316c30d2008-03-14 10:38:46 -07004115 (unsigned long long) pci_resource_len(pdev, 0));
Tomas Winklere1623442009-01-27 14:27:56 -08004116 IWL_DEBUG_INFO(priv, "pci_resource_base = %p\n", priv->hw_base);
Assaf Krauss316c30d2008-03-14 10:38:46 -07004117
Reinette Chatre731a29b2009-12-14 14:12:11 -08004118 /* these spin locks will be used in apm_ops.init and EEPROM access
Mohamed Abbasa8b50a02009-05-22 11:01:47 -07004119 * we should init now
4120 */
4121 spin_lock_init(&priv->reg_lock);
Reinette Chatre731a29b2009-12-14 14:12:11 -08004122 spin_lock_init(&priv->lock);
Reinette Chatre4843b5a2010-02-03 09:38:59 -08004123
4124 /*
4125 * stop and reset the on-board processor just in case it is in a
4126 * strange state ... like being left stranded by a primary kernel
4127 * and this is now the kdump kernel trying to start up
4128 */
4129 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
4130
Tomas Winklerb661c812008-04-23 17:14:54 -07004131 iwl_hw_detect(priv);
Shanyu Zhaoc11362c2010-03-05 17:05:20 -08004132 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
Tomas Winklerb661c812008-04-23 17:14:54 -07004133 priv->cfg->name, priv->hw_rev);
Assaf Krauss316c30d2008-03-14 10:38:46 -07004134
Tomas Winklere7b63582008-09-03 11:26:49 +08004135 /* We disable the RETRY_TIMEOUT register (0x41) to keep
4136 * PCI Tx retries from interfering with C3 CPU state */
4137 pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4138
Mohamed Abbas086ed112009-05-22 11:01:54 -07004139 iwl_prepare_card_hw(priv);
4140 if (!priv->hw_ready) {
4141 IWL_WARN(priv, "Failed, HW not ready\n");
4142 goto out_iounmap;
4143 }
4144
Assaf Krauss316c30d2008-03-14 10:38:46 -07004145 /*****************
4146 * 4. Read EEPROM
4147 *****************/
Assaf Krauss316c30d2008-03-14 10:38:46 -07004148 /* Read the EEPROM */
4149 err = iwl_eeprom_init(priv);
4150 if (err) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08004151 IWL_ERR(priv, "Unable to init EEPROM\n");
Assaf Krauss316c30d2008-03-14 10:38:46 -07004152 goto out_iounmap;
4153 }
Tomas Winkler8614f362008-04-23 17:14:55 -07004154 err = iwl_eeprom_check_version(priv);
4155 if (err)
Reinette Chatrec8f16132009-02-27 16:21:22 -08004156 goto out_free_eeprom;
Tomas Winkler8614f362008-04-23 17:14:55 -07004157
Wey-Yi Guy21a5b3c2010-11-10 13:32:59 -08004158 err = iwl_eeprom_check_sku(priv);
4159 if (err)
4160 goto out_free_eeprom;
4161
Ron Rindjunsky02883012008-05-15 13:53:53 +08004162 /* extract MAC Address */
Wey-Yi Guyc6fa17e2010-07-15 05:58:30 -07004163 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
4164 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
4165 priv->hw->wiphy->addresses = priv->addresses;
4166 priv->hw->wiphy->n_addresses = 1;
4167 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
4168 if (num_mac > 1) {
4169 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
4170 ETH_ALEN);
4171 priv->addresses[1].addr[5]++;
4172 priv->hw->wiphy->n_addresses++;
4173 }
Assaf Krauss316c30d2008-03-14 10:38:46 -07004174
4175 /************************
4176 * 5. Setup HW constants
4177 ************************/
Ron Rindjunskyda154e302008-06-30 17:23:20 +08004178 if (iwl_set_hw_params(priv)) {
Winkler, Tomas15b16872008-12-19 10:37:33 +08004179 IWL_ERR(priv, "failed to set hw parameters\n");
Tomas Winkler073d3f52008-04-21 15:41:52 -07004180 goto out_free_eeprom;
Assaf Krauss316c30d2008-03-14 10:38:46 -07004181 }
4182
4183 /*******************
Tomas Winkler6ba87952008-05-15 13:54:17 +08004184 * 6. Setup priv
Assaf Krauss316c30d2008-03-14 10:38:46 -07004185 *******************/
Zhu Yib481de92007-09-25 17:54:57 -07004186
Tomas Winkler6ba87952008-05-15 13:54:17 +08004187 err = iwl_init_drv(priv);
Assaf Kraussbf85ea42008-03-14 10:38:49 -07004188 if (err)
Ron Rindjunsky399f4902008-04-23 17:14:56 -07004189 goto out_free_eeprom;
Assaf Kraussbf85ea42008-03-14 10:38:49 -07004190 /* At this point both hw and priv are initialized. */
Assaf Krauss316c30d2008-03-14 10:38:46 -07004191
Assaf Krauss316c30d2008-03-14 10:38:46 -07004192 /********************
Abhijeet Kolekar09f9bf72009-04-20 14:37:03 -07004193 * 7. Setup services
Assaf Krauss316c30d2008-03-14 10:38:46 -07004194 ********************/
Mohamed Abbas0359fac2008-03-28 16:21:08 -07004195 spin_lock_irqsave(&priv->lock, flags);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004196 iwl_disable_interrupts(priv);
Mohamed Abbas0359fac2008-03-28 16:21:08 -07004197 spin_unlock_irqrestore(&priv->lock, flags);
Assaf Krauss316c30d2008-03-14 10:38:46 -07004198
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01004199 pci_enable_msi(priv->pci_dev);
4200
Wey-Yi Guye39fdee2010-11-10 09:56:40 -08004201 if (priv->cfg->ops->lib->isr_ops.alloc)
4202 priv->cfg->ops->lib->isr_ops.alloc(priv);
4203
4204 err = request_irq(priv->pci_dev->irq, priv->cfg->ops->lib->isr_ops.isr,
Mohamed Abbasef850d72009-05-22 11:01:50 -07004205 IRQF_SHARED, DRV_NAME, priv);
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01004206 if (err) {
4207 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
4208 goto out_disable_msi;
4209 }
Assaf Krauss316c30d2008-03-14 10:38:46 -07004210
Emmanuel Grumbach4e393172008-06-12 09:46:53 +08004211 iwl_setup_deferred_work(priv);
Emmanuel Grumbach653fa4a2008-06-30 17:23:11 +08004212 iwl_setup_rx_handlers(priv);
Assaf Krauss316c30d2008-03-14 10:38:46 -07004213
Johannes Berg158bea02010-01-22 14:22:53 -08004214 /*********************************************
4215 * 8. Enable interrupts and read RFKILL state
4216 *********************************************/
Tomas Winkler6ba87952008-05-15 13:54:17 +08004217
Stanislaw Gruszka554d1d02010-12-23 12:38:21 +01004218 /* enable rfkill interrupt: hw bug w/a */
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01004219 pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
4220 if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
4221 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
4222 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
4223 }
4224
Stanislaw Gruszka554d1d02010-12-23 12:38:21 +01004225 iwl_enable_rfkill_int(priv);
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01004226
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01004227 /* If platform's RF_KILL switch is NOT set to KILL */
4228 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
4229 clear_bit(STATUS_RF_KILL_HW, &priv->status);
4230 else
4231 set_bit(STATUS_RF_KILL_HW, &priv->status);
Tomas Winkler6ba87952008-05-15 13:54:17 +08004232
Johannes Berga60e77e2009-06-04 18:26:06 +02004233 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
4234 test_bit(STATUS_RF_KILL_HW, &priv->status));
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01004235
Emmanuel Grumbach58d0f362008-06-12 09:47:19 +08004236 iwl_power_initialize(priv);
Wey-Yi Guy39b73fb12009-07-24 11:13:02 -07004237 iwl_tt_initialize(priv);
Johannes Berg158bea02010-01-22 14:22:53 -08004238
Reinette Chatrea15707d2010-05-10 15:08:11 -07004239 init_completion(&priv->_agn.firmware_loading_complete);
Johannes Berg562db532010-04-29 07:41:53 -07004240
Johannes Bergb08dfd02010-01-29 11:54:56 -08004241 err = iwl_request_firmware(priv, true);
Johannes Berg158bea02010-01-22 14:22:53 -08004242 if (err)
Emmanuel Grumbach7d476182010-05-23 00:14:08 -07004243 goto out_destroy_workqueue;
Johannes Berg158bea02010-01-22 14:22:53 -08004244
Zhu Yib481de92007-09-25 17:54:57 -07004245 return 0;
4246
Emmanuel Grumbach7d476182010-05-23 00:14:08 -07004247 out_destroy_workqueue:
Reinette Chatrec8f16132009-02-27 16:21:22 -08004248 destroy_workqueue(priv->workqueue);
4249 priv->workqueue = NULL;
Helmut Schaa795cc0a2009-02-12 18:51:03 +01004250 free_irq(priv->pci_dev->irq, priv);
Wey-Yi Guye39fdee2010-11-10 09:56:40 -08004251 if (priv->cfg->ops->lib->isr_ops.free)
4252 priv->cfg->ops->lib->isr_ops.free(priv);
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01004253 out_disable_msi:
4254 pci_disable_msi(priv->pci_dev);
Tomas Winkler6ba87952008-05-15 13:54:17 +08004255 iwl_uninit_drv(priv);
Tomas Winkler073d3f52008-04-21 15:41:52 -07004256 out_free_eeprom:
4257 iwl_eeprom_free(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004258 out_iounmap:
4259 pci_iounmap(pdev, priv->hw_base);
4260 out_pci_release_regions:
Assaf Krauss316c30d2008-03-14 10:38:46 -07004261 pci_set_drvdata(pdev, NULL);
Reinette Chatre623d5632009-03-03 11:37:04 -08004262 pci_release_regions(pdev);
Zhu Yib481de92007-09-25 17:54:57 -07004263 out_pci_disable_device:
4264 pci_disable_device(pdev);
Zhu Yib481de92007-09-25 17:54:57 -07004265 out_ieee80211_free_hw:
Wey-Yi Guy20594eb2009-08-07 15:41:39 -07004266 iwl_free_traffic_mem(priv);
Wey-Yi Guyd7c76f42009-10-09 13:20:17 -07004267 ieee80211_free_hw(priv->hw);
Zhu Yib481de92007-09-25 17:54:57 -07004268 out:
4269 return err;
4270}
4271
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004272static void __devexit iwl_pci_remove(struct pci_dev *pdev)
Zhu Yib481de92007-09-25 17:54:57 -07004273{
Tomas Winklerc79dd5b2008-03-12 16:58:50 -07004274 struct iwl_priv *priv = pci_get_drvdata(pdev);
Mohamed Abbas0359fac2008-03-28 16:21:08 -07004275 unsigned long flags;
Zhu Yib481de92007-09-25 17:54:57 -07004276
4277 if (!priv)
4278 return;
4279
Reinette Chatrea15707d2010-05-10 15:08:11 -07004280 wait_for_completion(&priv->_agn.firmware_loading_complete);
Johannes Berg562db532010-04-29 07:41:53 -07004281
Tomas Winklere1623442009-01-27 14:27:56 -08004282 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
Zhu Yib481de92007-09-25 17:54:57 -07004283
Emmanuel Grumbach67249622008-05-29 16:35:26 +08004284 iwl_dbgfs_unregister(priv);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004285 sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
Emmanuel Grumbach67249622008-05-29 16:35:26 +08004286
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004287 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4288 * to be called and iwl_down since we are removing the device
Gregory Greenman0b124c32008-09-03 11:18:50 +08004289 * we need to set STATUS_EXIT_PENDING bit.
4290 */
4291 set_bit(STATUS_EXIT_PENDING, &priv->status);
Wey-Yi Guy5ed540a2011-01-21 15:26:39 -08004292
4293 iwl_leds_exit(priv);
4294
Ron Rindjunskyc4f55232008-03-28 16:21:10 -07004295 if (priv->mac80211_registered) {
4296 ieee80211_unregister_hw(priv->hw);
4297 priv->mac80211_registered = 0;
Gregory Greenman0b124c32008-09-03 11:18:50 +08004298 } else {
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004299 iwl_down(priv);
Ron Rindjunskyc4f55232008-03-28 16:21:10 -07004300 }
4301
Ben Cahillc166b252009-10-23 13:42:35 -07004302 /*
4303 * Make sure device is reset to low power before unloading driver.
4304 * This may be redundant with iwl_down(), but there are paths to
4305 * run iwl_down() without calling apm_ops.stop(), and there are
4306 * paths to avoid running iwl_down() at all before leaving driver.
4307 * This (inexpensive) call *makes sure* device is reset.
4308 */
Johannes Berg14e8e4a2010-09-22 18:02:10 +02004309 iwl_apm_stop(priv);
Ben Cahillc166b252009-10-23 13:42:35 -07004310
Wey-Yi Guy39b73fb12009-07-24 11:13:02 -07004311 iwl_tt_exit(priv);
4312
Mohamed Abbas0359fac2008-03-28 16:21:08 -07004313 /* make sure we flush any pending irq or
4314 * tasklet for the driver
4315 */
4316 spin_lock_irqsave(&priv->lock, flags);
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004317 iwl_disable_interrupts(priv);
Mohamed Abbas0359fac2008-03-28 16:21:08 -07004318 spin_unlock_irqrestore(&priv->lock, flags);
4319
4320 iwl_synchronize_irq(priv);
4321
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004322 iwl_dealloc_ucode_pci(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004323
4324 if (priv->rxq.bd)
Wey-Yi Guy54b81552010-03-17 13:34:35 -07004325 iwlagn_rx_queue_free(priv, &priv->rxq);
Wey-Yi Guy74bcdb32010-03-17 13:34:34 -07004326 iwlagn_hw_txq_ctx_free(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004327
Tomas Winkler073d3f52008-04-21 15:41:52 -07004328 iwl_eeprom_free(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004329
Zhu Yib481de92007-09-25 17:54:57 -07004330
Mohamed Abbas948c1712007-10-25 17:15:45 +08004331 /*netif_stop_queue(dev); */
4332 flush_workqueue(priv->workqueue);
4333
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004334 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
Zhu Yib481de92007-09-25 17:54:57 -07004335 * priv->workqueue... so we can't take down the workqueue
4336 * until now... */
4337 destroy_workqueue(priv->workqueue);
4338 priv->workqueue = NULL;
Wey-Yi Guy20594eb2009-08-07 15:41:39 -07004339 iwl_free_traffic_mem(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004340
Helmut Schaa6cd0b1c2009-01-19 13:10:07 +01004341 free_irq(priv->pci_dev->irq, priv);
4342 pci_disable_msi(priv->pci_dev);
Zhu Yib481de92007-09-25 17:54:57 -07004343 pci_iounmap(pdev, priv->hw_base);
4344 pci_release_regions(pdev);
4345 pci_disable_device(pdev);
4346 pci_set_drvdata(pdev, NULL);
4347
Tomas Winkler6ba87952008-05-15 13:54:17 +08004348 iwl_uninit_drv(priv);
Zhu Yib481de92007-09-25 17:54:57 -07004349
Wey-Yi Guye39fdee2010-11-10 09:56:40 -08004350 if (priv->cfg->ops->lib->isr_ops.free)
4351 priv->cfg->ops->lib->isr_ops.free(priv);
Mohamed Abbasef850d72009-05-22 11:01:50 -07004352
Johannes Berg77834542010-10-04 05:50:36 -07004353 dev_kfree_skb(priv->beacon_skb);
Zhu Yib481de92007-09-25 17:54:57 -07004354
4355 ieee80211_free_hw(priv->hw);
4356}
4357
Zhu Yib481de92007-09-25 17:54:57 -07004358
4359/*****************************************************************************
4360 *
4361 * driver and module entry point
4362 *
4363 *****************************************************************************/
4364
Ron Rindjunskyfed90172008-04-15 16:01:41 -07004365/* Hardware specific file defines the PCI IDs table for that hardware module */
Alexey Dobriyana3aa1882010-01-07 11:58:11 +00004366static DEFINE_PCI_DEVICE_TABLE(iwl_hw_card_ids) = {
Tomas Winkler4fc22b22008-07-21 18:54:42 +03004367#ifdef CONFIG_IWL4965
Ron Rindjunskyfed90172008-04-15 16:01:41 -07004368 {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4369 {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
Tomas Winkler4fc22b22008-07-21 18:54:42 +03004370#endif /* CONFIG_IWL4965 */
Tomas Winkler5a6a2562008-04-24 11:55:23 -07004371#ifdef CONFIG_IWL5000
Wey-Yi Guyac592572009-11-20 12:05:03 -08004372/* 5100 Series WiFi */
4373 {IWL_PCI_DEVICE(0x4232, 0x1201, iwl5100_agn_cfg)}, /* Mini Card */
4374 {IWL_PCI_DEVICE(0x4232, 0x1301, iwl5100_agn_cfg)}, /* Half Mini Card */
4375 {IWL_PCI_DEVICE(0x4232, 0x1204, iwl5100_agn_cfg)}, /* Mini Card */
4376 {IWL_PCI_DEVICE(0x4232, 0x1304, iwl5100_agn_cfg)}, /* Half Mini Card */
4377 {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bgn_cfg)}, /* Mini Card */
4378 {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bgn_cfg)}, /* Half Mini Card */
4379 {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)}, /* Mini Card */
4380 {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)}, /* Half Mini Card */
4381 {IWL_PCI_DEVICE(0x4232, 0x1221, iwl5100_agn_cfg)}, /* Mini Card */
4382 {IWL_PCI_DEVICE(0x4232, 0x1321, iwl5100_agn_cfg)}, /* Half Mini Card */
4383 {IWL_PCI_DEVICE(0x4232, 0x1224, iwl5100_agn_cfg)}, /* Mini Card */
4384 {IWL_PCI_DEVICE(0x4232, 0x1324, iwl5100_agn_cfg)}, /* Half Mini Card */
4385 {IWL_PCI_DEVICE(0x4232, 0x1225, iwl5100_bgn_cfg)}, /* Mini Card */
4386 {IWL_PCI_DEVICE(0x4232, 0x1325, iwl5100_bgn_cfg)}, /* Half Mini Card */
4387 {IWL_PCI_DEVICE(0x4232, 0x1226, iwl5100_abg_cfg)}, /* Mini Card */
4388 {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)}, /* Half Mini Card */
4389 {IWL_PCI_DEVICE(0x4237, 0x1211, iwl5100_agn_cfg)}, /* Mini Card */
4390 {IWL_PCI_DEVICE(0x4237, 0x1311, iwl5100_agn_cfg)}, /* Half Mini Card */
4391 {IWL_PCI_DEVICE(0x4237, 0x1214, iwl5100_agn_cfg)}, /* Mini Card */
4392 {IWL_PCI_DEVICE(0x4237, 0x1314, iwl5100_agn_cfg)}, /* Half Mini Card */
4393 {IWL_PCI_DEVICE(0x4237, 0x1215, iwl5100_bgn_cfg)}, /* Mini Card */
4394 {IWL_PCI_DEVICE(0x4237, 0x1315, iwl5100_bgn_cfg)}, /* Half Mini Card */
4395 {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)}, /* Mini Card */
4396 {IWL_PCI_DEVICE(0x4237, 0x1316, iwl5100_abg_cfg)}, /* Half Mini Card */
4397
4398/* 5300 Series WiFi */
4399 {IWL_PCI_DEVICE(0x4235, 0x1021, iwl5300_agn_cfg)}, /* Mini Card */
4400 {IWL_PCI_DEVICE(0x4235, 0x1121, iwl5300_agn_cfg)}, /* Half Mini Card */
4401 {IWL_PCI_DEVICE(0x4235, 0x1024, iwl5300_agn_cfg)}, /* Mini Card */
4402 {IWL_PCI_DEVICE(0x4235, 0x1124, iwl5300_agn_cfg)}, /* Half Mini Card */
4403 {IWL_PCI_DEVICE(0x4235, 0x1001, iwl5300_agn_cfg)}, /* Mini Card */
4404 {IWL_PCI_DEVICE(0x4235, 0x1101, iwl5300_agn_cfg)}, /* Half Mini Card */
4405 {IWL_PCI_DEVICE(0x4235, 0x1004, iwl5300_agn_cfg)}, /* Mini Card */
4406 {IWL_PCI_DEVICE(0x4235, 0x1104, iwl5300_agn_cfg)}, /* Half Mini Card */
4407 {IWL_PCI_DEVICE(0x4236, 0x1011, iwl5300_agn_cfg)}, /* Mini Card */
4408 {IWL_PCI_DEVICE(0x4236, 0x1111, iwl5300_agn_cfg)}, /* Half Mini Card */
4409 {IWL_PCI_DEVICE(0x4236, 0x1014, iwl5300_agn_cfg)}, /* Mini Card */
4410 {IWL_PCI_DEVICE(0x4236, 0x1114, iwl5300_agn_cfg)}, /* Half Mini Card */
4411
4412/* 5350 Series WiFi/WiMax */
4413 {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)}, /* Mini Card */
4414 {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)}, /* Mini Card */
4415 {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)}, /* Mini Card */
4416
4417/* 5150 Series Wifi/WiMax */
4418 {IWL_PCI_DEVICE(0x423C, 0x1201, iwl5150_agn_cfg)}, /* Mini Card */
4419 {IWL_PCI_DEVICE(0x423C, 0x1301, iwl5150_agn_cfg)}, /* Half Mini Card */
4420 {IWL_PCI_DEVICE(0x423C, 0x1206, iwl5150_abg_cfg)}, /* Mini Card */
4421 {IWL_PCI_DEVICE(0x423C, 0x1306, iwl5150_abg_cfg)}, /* Half Mini Card */
4422 {IWL_PCI_DEVICE(0x423C, 0x1221, iwl5150_agn_cfg)}, /* Mini Card */
4423 {IWL_PCI_DEVICE(0x423C, 0x1321, iwl5150_agn_cfg)}, /* Half Mini Card */
4424
4425 {IWL_PCI_DEVICE(0x423D, 0x1211, iwl5150_agn_cfg)}, /* Mini Card */
4426 {IWL_PCI_DEVICE(0x423D, 0x1311, iwl5150_agn_cfg)}, /* Half Mini Card */
4427 {IWL_PCI_DEVICE(0x423D, 0x1216, iwl5150_abg_cfg)}, /* Mini Card */
4428 {IWL_PCI_DEVICE(0x423D, 0x1316, iwl5150_abg_cfg)}, /* Half Mini Card */
Wey-Yi Guy5953a622009-09-17 10:43:53 -07004429
4430/* 6x00 Series */
Wey-Yi Guy5953a622009-09-17 10:43:53 -07004431 {IWL_PCI_DEVICE(0x422B, 0x1101, iwl6000_3agn_cfg)},
4432 {IWL_PCI_DEVICE(0x422B, 0x1121, iwl6000_3agn_cfg)},
4433 {IWL_PCI_DEVICE(0x422C, 0x1301, iwl6000i_2agn_cfg)},
4434 {IWL_PCI_DEVICE(0x422C, 0x1306, iwl6000i_2abg_cfg)},
4435 {IWL_PCI_DEVICE(0x422C, 0x1307, iwl6000i_2bg_cfg)},
4436 {IWL_PCI_DEVICE(0x422C, 0x1321, iwl6000i_2agn_cfg)},
4437 {IWL_PCI_DEVICE(0x422C, 0x1326, iwl6000i_2abg_cfg)},
4438 {IWL_PCI_DEVICE(0x4238, 0x1111, iwl6000_3agn_cfg)},
4439 {IWL_PCI_DEVICE(0x4239, 0x1311, iwl6000i_2agn_cfg)},
4440 {IWL_PCI_DEVICE(0x4239, 0x1316, iwl6000i_2abg_cfg)},
Shanyu Zhao4b3e8062010-04-07 18:06:36 -07004441
Wey-Yi Guy003ea982010-12-15 08:06:23 -08004442/* 6x05 Series */
Wey-Yi Guy8b3ee292010-11-18 11:41:48 -08004443 {IWL_PCI_DEVICE(0x0082, 0x1301, iwl6005_2agn_cfg)},
4444 {IWL_PCI_DEVICE(0x0082, 0x1306, iwl6005_2abg_cfg)},
4445 {IWL_PCI_DEVICE(0x0082, 0x1307, iwl6005_2bg_cfg)},
4446 {IWL_PCI_DEVICE(0x0082, 0x1321, iwl6005_2agn_cfg)},
4447 {IWL_PCI_DEVICE(0x0082, 0x1326, iwl6005_2abg_cfg)},
4448 {IWL_PCI_DEVICE(0x0085, 0x1311, iwl6005_2agn_cfg)},
4449 {IWL_PCI_DEVICE(0x0085, 0x1316, iwl6005_2abg_cfg)},
Shanyu Zhao18089722010-05-06 10:15:21 -07004450
Wey-Yi Guy003ea982010-12-15 08:06:23 -08004451/* 6x30 Series */
Wey-Yi Guy8b3ee292010-11-18 11:41:48 -08004452 {IWL_PCI_DEVICE(0x008A, 0x5305, iwl1030_bgn_cfg)},
4453 {IWL_PCI_DEVICE(0x008A, 0x5307, iwl1030_bg_cfg)},
4454 {IWL_PCI_DEVICE(0x008A, 0x5325, iwl1030_bgn_cfg)},
4455 {IWL_PCI_DEVICE(0x008A, 0x5327, iwl1030_bg_cfg)},
4456 {IWL_PCI_DEVICE(0x008B, 0x5315, iwl1030_bgn_cfg)},
4457 {IWL_PCI_DEVICE(0x008B, 0x5317, iwl1030_bg_cfg)},
4458 {IWL_PCI_DEVICE(0x0090, 0x5211, iwl6030_2agn_cfg)},
4459 {IWL_PCI_DEVICE(0x0090, 0x5215, iwl6030_2bgn_cfg)},
4460 {IWL_PCI_DEVICE(0x0090, 0x5216, iwl6030_2abg_cfg)},
4461 {IWL_PCI_DEVICE(0x0091, 0x5201, iwl6030_2agn_cfg)},
4462 {IWL_PCI_DEVICE(0x0091, 0x5205, iwl6030_2bgn_cfg)},
4463 {IWL_PCI_DEVICE(0x0091, 0x5206, iwl6030_2abg_cfg)},
4464 {IWL_PCI_DEVICE(0x0091, 0x5207, iwl6030_2bg_cfg)},
4465 {IWL_PCI_DEVICE(0x0091, 0x5221, iwl6030_2agn_cfg)},
4466 {IWL_PCI_DEVICE(0x0091, 0x5225, iwl6030_2bgn_cfg)},
4467 {IWL_PCI_DEVICE(0x0091, 0x5226, iwl6030_2abg_cfg)},
Wey-Yi Guy5953a622009-09-17 10:43:53 -07004468
4469/* 6x50 WiFi/WiMax Series */
Wey-Yi Guy5953a622009-09-17 10:43:53 -07004470 {IWL_PCI_DEVICE(0x0087, 0x1301, iwl6050_2agn_cfg)},
4471 {IWL_PCI_DEVICE(0x0087, 0x1306, iwl6050_2abg_cfg)},
4472 {IWL_PCI_DEVICE(0x0087, 0x1321, iwl6050_2agn_cfg)},
4473 {IWL_PCI_DEVICE(0x0087, 0x1326, iwl6050_2abg_cfg)},
Wey-Yi Guy5953a622009-09-17 10:43:53 -07004474 {IWL_PCI_DEVICE(0x0089, 0x1311, iwl6050_2agn_cfg)},
4475 {IWL_PCI_DEVICE(0x0089, 0x1316, iwl6050_2abg_cfg)},
4476
Wey-Yi Guy003ea982010-12-15 08:06:23 -08004477/* 6150 WiFi/WiMax Series */
Wey-Yi Guy8b3ee292010-11-18 11:41:48 -08004478 {IWL_PCI_DEVICE(0x0885, 0x1305, iwl6150_bgn_cfg)},
4479 {IWL_PCI_DEVICE(0x0885, 0x1306, iwl6150_bgn_cfg)},
4480 {IWL_PCI_DEVICE(0x0885, 0x1325, iwl6150_bgn_cfg)},
4481 {IWL_PCI_DEVICE(0x0885, 0x1326, iwl6150_bgn_cfg)},
4482 {IWL_PCI_DEVICE(0x0886, 0x1315, iwl6150_bgn_cfg)},
4483 {IWL_PCI_DEVICE(0x0886, 0x1316, iwl6150_bgn_cfg)},
Shanyu Zhao03264332010-06-29 17:27:27 -07004484
Jay Sternberg77dcb6a2009-03-06 13:52:55 -08004485/* 1000 Series WiFi */
Wey-Yi Guy4bd0914f2009-09-17 10:43:52 -07004486 {IWL_PCI_DEVICE(0x0083, 0x1205, iwl1000_bgn_cfg)},
4487 {IWL_PCI_DEVICE(0x0083, 0x1305, iwl1000_bgn_cfg)},
4488 {IWL_PCI_DEVICE(0x0083, 0x1225, iwl1000_bgn_cfg)},
4489 {IWL_PCI_DEVICE(0x0083, 0x1325, iwl1000_bgn_cfg)},
4490 {IWL_PCI_DEVICE(0x0084, 0x1215, iwl1000_bgn_cfg)},
4491 {IWL_PCI_DEVICE(0x0084, 0x1315, iwl1000_bgn_cfg)},
4492 {IWL_PCI_DEVICE(0x0083, 0x1206, iwl1000_bg_cfg)},
4493 {IWL_PCI_DEVICE(0x0083, 0x1306, iwl1000_bg_cfg)},
4494 {IWL_PCI_DEVICE(0x0083, 0x1226, iwl1000_bg_cfg)},
4495 {IWL_PCI_DEVICE(0x0083, 0x1326, iwl1000_bg_cfg)},
4496 {IWL_PCI_DEVICE(0x0084, 0x1216, iwl1000_bg_cfg)},
4497 {IWL_PCI_DEVICE(0x0084, 0x1316, iwl1000_bg_cfg)},
Jay Sternberg1de19ec2010-09-14 15:21:20 -07004498
Wey-Yi Guy58a39092010-10-06 08:14:21 -07004499/* 100 Series WiFi */
Jay Sternberg1de19ec2010-09-14 15:21:20 -07004500 {IWL_PCI_DEVICE(0x08AE, 0x1005, iwl100_bgn_cfg)},
Jay Sternberg1de19ec2010-09-14 15:21:20 -07004501 {IWL_PCI_DEVICE(0x08AE, 0x1007, iwl100_bg_cfg)},
Wey-Yi Guy2a21ff42010-11-10 09:56:37 -08004502 {IWL_PCI_DEVICE(0x08AF, 0x1015, iwl100_bgn_cfg)},
4503 {IWL_PCI_DEVICE(0x08AF, 0x1017, iwl100_bg_cfg)},
4504 {IWL_PCI_DEVICE(0x08AE, 0x1025, iwl100_bgn_cfg)},
4505 {IWL_PCI_DEVICE(0x08AE, 0x1027, iwl100_bg_cfg)},
Wey-Yi Guy58a39092010-10-06 08:14:21 -07004506
4507/* 130 Series WiFi */
4508 {IWL_PCI_DEVICE(0x0896, 0x5005, iwl130_bgn_cfg)},
4509 {IWL_PCI_DEVICE(0x0896, 0x5007, iwl130_bg_cfg)},
4510 {IWL_PCI_DEVICE(0x0897, 0x5015, iwl130_bgn_cfg)},
4511 {IWL_PCI_DEVICE(0x0897, 0x5017, iwl130_bg_cfg)},
4512 {IWL_PCI_DEVICE(0x0896, 0x5025, iwl130_bgn_cfg)},
4513 {IWL_PCI_DEVICE(0x0896, 0x5027, iwl130_bg_cfg)},
4514
Tomas Winkler5a6a2562008-04-24 11:55:23 -07004515#endif /* CONFIG_IWL5000 */
Tomas Winkler7100e922008-12-01 16:32:18 -08004516
Ron Rindjunskyfed90172008-04-15 16:01:41 -07004517 {0}
4518};
4519MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4520
4521static struct pci_driver iwl_driver = {
Zhu Yib481de92007-09-25 17:54:57 -07004522 .name = DRV_NAME,
Ron Rindjunskyfed90172008-04-15 16:01:41 -07004523 .id_table = iwl_hw_card_ids,
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004524 .probe = iwl_pci_probe,
4525 .remove = __devexit_p(iwl_pci_remove),
John W. Linvillef60dc012010-10-25 16:12:37 -04004526 .driver.pm = IWL_PM_OPS,
Zhu Yib481de92007-09-25 17:54:57 -07004527};
4528
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004529static int __init iwl_init(void)
Zhu Yib481de92007-09-25 17:54:57 -07004530{
4531
4532 int ret;
Joe Perchesc96c31e2010-07-26 14:39:58 -07004533 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
4534 pr_info(DRV_COPYRIGHT "\n");
Reinette Chatre897e1cf2008-03-28 16:21:09 -07004535
Tomas Winklere227cea2008-07-18 13:53:05 +08004536 ret = iwlagn_rate_control_register();
Reinette Chatre897e1cf2008-03-28 16:21:09 -07004537 if (ret) {
Joe Perchesc96c31e2010-07-26 14:39:58 -07004538 pr_err("Unable to register rate control algorithm: %d\n", ret);
Reinette Chatre897e1cf2008-03-28 16:21:09 -07004539 return ret;
4540 }
4541
Ron Rindjunskyfed90172008-04-15 16:01:41 -07004542 ret = pci_register_driver(&iwl_driver);
Zhu Yib481de92007-09-25 17:54:57 -07004543 if (ret) {
Joe Perchesc96c31e2010-07-26 14:39:58 -07004544 pr_err("Unable to initialize PCI module\n");
Reinette Chatre897e1cf2008-03-28 16:21:09 -07004545 goto error_register;
Zhu Yib481de92007-09-25 17:54:57 -07004546 }
Zhu Yib481de92007-09-25 17:54:57 -07004547
4548 return ret;
Reinette Chatre897e1cf2008-03-28 16:21:09 -07004549
Reinette Chatre897e1cf2008-03-28 16:21:09 -07004550error_register:
Tomas Winklere227cea2008-07-18 13:53:05 +08004551 iwlagn_rate_control_unregister();
Reinette Chatre897e1cf2008-03-28 16:21:09 -07004552 return ret;
Zhu Yib481de92007-09-25 17:54:57 -07004553}
4554
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004555static void __exit iwl_exit(void)
Zhu Yib481de92007-09-25 17:54:57 -07004556{
Ron Rindjunskyfed90172008-04-15 16:01:41 -07004557 pci_unregister_driver(&iwl_driver);
Tomas Winklere227cea2008-07-18 13:53:05 +08004558 iwlagn_rate_control_unregister();
Zhu Yib481de92007-09-25 17:54:57 -07004559}
4560
Emmanuel Grumbach5b9f8cd2008-10-29 14:05:46 -07004561module_exit(iwl_exit);
4562module_init(iwl_init);
Reinette Chatrea562a9d2009-07-17 09:30:24 -07004563
4564#ifdef CONFIG_IWLWIFI_DEBUG
Wey-Yi Guy4e30cb62009-09-17 10:43:47 -07004565module_param_named(debug50, iwl_debug_level, uint, S_IRUGO);
Reinette Chatrea562a9d2009-07-17 09:30:24 -07004566MODULE_PARM_DESC(debug50, "50XX debug output mask (deprecated)");
Wey-Yi Guy4e30cb62009-09-17 10:43:47 -07004567module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
Reinette Chatrea562a9d2009-07-17 09:30:24 -07004568MODULE_PARM_DESC(debug, "debug output mask");
4569#endif
4570
Wey-Yi Guy2b068612010-03-22 09:17:39 -07004571module_param_named(swcrypto50, iwlagn_mod_params.sw_crypto, bool, S_IRUGO);
4572MODULE_PARM_DESC(swcrypto50,
4573 "using crypto in software (default 0 [hardware]) (deprecated)");
4574module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
4575MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
4576module_param_named(queues_num50,
4577 iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4578MODULE_PARM_DESC(queues_num50,
4579 "number of hw queues in 50xx series (deprecated)");
4580module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
4581MODULE_PARM_DESC(queues_num, "number of hw queues.");
4582module_param_named(11n_disable50, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4583MODULE_PARM_DESC(11n_disable50, "disable 50XX 11n functionality (deprecated)");
4584module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
4585MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
4586module_param_named(amsdu_size_8K50, iwlagn_mod_params.amsdu_size_8K,
4587 int, S_IRUGO);
4588MODULE_PARM_DESC(amsdu_size_8K50,
4589 "enable 8K amsdu size in 50XX series (deprecated)");
4590module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
4591 int, S_IRUGO);
4592MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
4593module_param_named(fw_restart50, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4594MODULE_PARM_DESC(fw_restart50,
4595 "restart firmware in case of error (deprecated)");
4596module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
4597MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
4598module_param_named(
4599 disable_hw_scan, iwlagn_mod_params.disable_hw_scan, int, S_IRUGO);
Wey-Yi Guy72645ef2010-10-06 07:42:43 -07004600MODULE_PARM_DESC(disable_hw_scan,
4601 "disable hardware scanning (default 0) (deprecated)");
Johannes Bergdd7a2502010-04-28 23:33:10 -07004602
4603module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
4604 S_IRUGO);
4605MODULE_PARM_DESC(ucode_alternative,
4606 "specify ucode alternative to use from ucode file");
Wey-Yi Guybee008b2010-08-23 07:57:04 -07004607
4608module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
4609MODULE_PARM_DESC(antenna_coupling,
4610 "specify antenna coupling in dB (defualt: 0 dB)");
Wey-Yi Guyf37837c2010-08-23 07:57:12 -07004611
Wey-Yi Guy9f28ebc2010-11-26 13:24:19 -08004612module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO);
4613MODULE_PARM_DESC(bt_ch_inhibition,
4614 "Disable BT channel inhibition (default: enable)");