blob: 0a4eb278f789643e3cb6a07a84a5aa96c101c03d [file] [log] [blame]
Johannes Berg8ca151b2013-01-24 14:25:36 +01001/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
Emmanuel Grumbach410dc5a2013-02-18 09:22:28 +020025 * in the file called COPYING.
Johannes Berg8ca151b2013-01-24 14:25:36 +010026 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63#include <linux/module.h>
64#include <net/mac80211.h>
65
66#include "iwl-notif-wait.h"
67#include "iwl-trans.h"
68#include "iwl-op-mode.h"
69#include "iwl-fw.h"
70#include "iwl-debug.h"
71#include "iwl-drv.h"
72#include "iwl-modparams.h"
73#include "mvm.h"
74#include "iwl-phy-db.h"
75#include "iwl-eeprom-parse.h"
76#include "iwl-csr.h"
77#include "iwl-io.h"
78#include "iwl-prph.h"
79#include "rs.h"
80#include "fw-api-scan.h"
81#include "time-event.h"
82
83/*
84 * module name, copyright, version, etc.
85 */
86#define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
87
88#define DRV_VERSION IWLWIFI_VERSION
89
90MODULE_DESCRIPTION(DRV_DESCRIPTION);
91MODULE_VERSION(DRV_VERSION);
92MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
93MODULE_LICENSE("GPL");
94
95static const struct iwl_op_mode_ops iwl_mvm_ops;
96
97struct iwl_mvm_mod_params iwlmvm_mod_params = {
98 .power_scheme = IWL_POWER_SCHEME_BPS,
99 /* rest of fields are 0 by default */
100};
101
102module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
103MODULE_PARM_DESC(init_dbg,
104 "set to true to debug an ASSERT in INIT fw (default: false");
105module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
106MODULE_PARM_DESC(power_scheme,
107 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
108
109/*
110 * module init and exit functions
111 */
112static int __init iwl_mvm_init(void)
113{
114 int ret;
115
116 ret = iwl_mvm_rate_control_register();
117 if (ret) {
118 pr_err("Unable to register rate control algorithm: %d\n", ret);
119 return ret;
120 }
121
122 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
123
124 if (ret) {
125 pr_err("Unable to register MVM op_mode: %d\n", ret);
126 iwl_mvm_rate_control_unregister();
127 }
128
129 return ret;
130}
131module_init(iwl_mvm_init);
132
133static void __exit iwl_mvm_exit(void)
134{
135 iwl_opmode_deregister("iwlmvm");
136 iwl_mvm_rate_control_unregister();
137}
138module_exit(iwl_mvm_exit);
139
140static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
141{
142 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
143 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
144 u32 reg_val = 0;
145
Emmanuel Grumbachd110cb52013-03-07 17:27:40 +0200146 radio_cfg_type = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_TYPE) >>
147 FW_PHY_CFG_RADIO_TYPE_POS;
148 radio_cfg_step = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_STEP) >>
149 FW_PHY_CFG_RADIO_STEP_POS;
150 radio_cfg_dash = (mvm->fw->phy_config & FW_PHY_CFG_RADIO_DASH) >>
151 FW_PHY_CFG_RADIO_DASH_POS;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100152
153 /* SKU control */
154 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
155 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
156 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
157 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
158
159 /* radio configuration */
160 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
161 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
162 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
163
164 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
165 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
166
167 /* silicon bits */
168 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100169
Lilach Edelsteine139dc42013-01-13 13:31:10 +0200170 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
171 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
172 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
173 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
174 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
175 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
176 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
177 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
178 reg_val);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100179
180 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
181 radio_cfg_step, radio_cfg_dash);
182
183 /*
184 * W/A : NIC is stuck in a reset state after Early PCIe power off
185 * (PCIe power is lost before PERST# is asserted), causing ME FW
186 * to lose ownership and not being able to obtain it back.
187 */
188 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
189 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
190 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
191}
192
193struct iwl_rx_handlers {
194 u8 cmd_id;
195 bool async;
196 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
197 struct iwl_device_cmd *cmd);
198};
199
200#define RX_HANDLER(_cmd_id, _fn, _async) \
201 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
202
203/*
204 * Handlers for fw notifications
205 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
206 * This list should be in order of frequency for performance purposes.
207 *
208 * The handler can be SYNC - this means that it will be called in the Rx path
209 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
210 * only in this case!), it should be set as ASYNC. In that case, it will be
211 * called from a worker with mvm->mutex held.
212 */
213static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
214 RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false),
215 RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false),
216 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
217 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100218
Emmanuel Grumbachf421f9c2013-01-17 14:20:29 +0200219 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
Ilan Peer571765c2013-03-05 15:26:03 +0200220 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, false),
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300221 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
Emmanuel Grumbachf421f9c2013-01-17 14:20:29 +0200222
Emmanuel Grumbach497b49d2013-06-02 20:54:48 +0300223 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
224
225 RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false),
226 RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, false),
227
Johannes Berg8ca151b2013-01-24 14:25:36 +0100228 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
229 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
230
Hila Gonend64048e2013-03-13 18:00:03 +0200231 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
232 false),
233
Johannes Berg8ca151b2013-01-24 14:25:36 +0100234 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
235};
236#undef RX_HANDLER
237#define CMD(x) [x] = #x
238
239static const char *iwl_mvm_cmd_strings[REPLY_MAX] = {
240 CMD(MVM_ALIVE),
241 CMD(REPLY_ERROR),
242 CMD(INIT_COMPLETE_NOTIF),
243 CMD(PHY_CONTEXT_CMD),
244 CMD(MGMT_MCAST_KEY),
245 CMD(TX_CMD),
246 CMD(TXPATH_FLUSH),
247 CMD(MAC_CONTEXT_CMD),
248 CMD(TIME_EVENT_CMD),
249 CMD(TIME_EVENT_NOTIFICATION),
250 CMD(BINDING_CONTEXT_CMD),
251 CMD(TIME_QUOTA_CMD),
252 CMD(RADIO_VERSION_NOTIFICATION),
253 CMD(SCAN_REQUEST_CMD),
254 CMD(SCAN_ABORT_CMD),
255 CMD(SCAN_START_NOTIFICATION),
256 CMD(SCAN_RESULTS_NOTIFICATION),
257 CMD(SCAN_COMPLETE_NOTIFICATION),
258 CMD(NVM_ACCESS_CMD),
259 CMD(PHY_CONFIGURATION_CMD),
260 CMD(CALIB_RES_NOTIF_PHY_DB),
261 CMD(SET_CALIB_DEFAULT_CMD),
262 CMD(CALIBRATION_COMPLETE_NOTIFICATION),
263 CMD(ADD_STA),
264 CMD(REMOVE_STA),
265 CMD(LQ_CMD),
266 CMD(SCAN_OFFLOAD_CONFIG_CMD),
267 CMD(SCAN_OFFLOAD_REQUEST_CMD),
268 CMD(SCAN_OFFLOAD_ABORT_CMD),
269 CMD(SCAN_OFFLOAD_COMPLETE),
270 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
271 CMD(POWER_TABLE_CMD),
272 CMD(WEP_KEY),
273 CMD(REPLY_RX_PHY_CMD),
274 CMD(REPLY_RX_MPDU_CMD),
Ilan Peer571765c2013-03-05 15:26:03 +0200275 CMD(BEACON_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100276 CMD(BEACON_TEMPLATE_CMD),
277 CMD(STATISTICS_NOTIFICATION),
278 CMD(TX_ANT_CONFIGURATION_CMD),
279 CMD(D3_CONFIG_CMD),
280 CMD(PROT_OFFLOAD_CONFIG_CMD),
281 CMD(OFFLOADS_QUERY_CMD),
282 CMD(REMOTE_WAKE_CONFIG_CMD),
283 CMD(WOWLAN_PATTERNS),
284 CMD(WOWLAN_CONFIGURATION),
285 CMD(WOWLAN_TSC_RSC_PARAM),
286 CMD(WOWLAN_TKIP_PARAM),
287 CMD(WOWLAN_KEK_KCK_MATERIAL),
288 CMD(WOWLAN_GET_STATUSES),
289 CMD(WOWLAN_TX_POWER_PER_DB),
290 CMD(NET_DETECT_CONFIG_CMD),
291 CMD(NET_DETECT_PROFILES_QUERY_CMD),
292 CMD(NET_DETECT_PROFILES_CMD),
293 CMD(NET_DETECT_HOTSPOTS_CMD),
294 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD),
Emmanuel Grumbach3b4612f2013-03-03 09:14:51 +0200295 CMD(CARD_STATE_NOTIFICATION),
Hila Gonend64048e2013-03-13 18:00:03 +0200296 CMD(MISSED_BEACONS_NOTIFICATION),
Emmanuel Grumbachfb3ceb82013-01-14 15:04:01 +0200297 CMD(BT_COEX_PRIO_TABLE),
298 CMD(BT_COEX_PROT_ENV),
299 CMD(BT_PROFILE_NOTIFICATION),
300 CMD(BT_CONFIG),
Emmanuel Grumbach51b6b9e2013-05-02 15:01:24 +0300301 CMD(MCAST_FILTER_CMD),
Hila Gonen7df15b12012-12-12 11:16:19 +0200302 CMD(REPLY_BEACON_FILTERING_CMD),
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300303 CMD(REPLY_THERMAL_MNG_BACKOFF),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100304};
305#undef CMD
306
307/* this forward declaration can avoid to export the function */
308static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
309
310static struct iwl_op_mode *
311iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
312 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
313{
314 struct ieee80211_hw *hw;
315 struct iwl_op_mode *op_mode;
316 struct iwl_mvm *mvm;
317 struct iwl_trans_config trans_cfg = {};
318 static const u8 no_reclaim_cmds[] = {
319 TX_CMD,
320 };
321 int err, scan_size;
322
Johannes Berg8ca151b2013-01-24 14:25:36 +0100323 /********************************
324 * 1. Allocating and configuring HW data
325 ********************************/
326 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
327 sizeof(struct iwl_mvm),
328 &iwl_mvm_hw_ops);
329 if (!hw)
330 return NULL;
331
332 op_mode = hw->priv;
333 op_mode->ops = &iwl_mvm_ops;
334 op_mode->trans = trans;
335
336 mvm = IWL_OP_MODE_GET_MVM(op_mode);
337 mvm->dev = trans->dev;
338 mvm->trans = trans;
339 mvm->cfg = cfg;
340 mvm->fw = fw;
341 mvm->hw = hw;
342
343 mutex_init(&mvm->mutex);
344 spin_lock_init(&mvm->async_handlers_lock);
345 INIT_LIST_HEAD(&mvm->time_event_list);
346 INIT_LIST_HEAD(&mvm->async_handlers_list);
347 spin_lock_init(&mvm->time_event_lock);
348
349 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
350 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
351 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
352
353 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
354
355 /*
356 * Populate the state variables that the transport layer needs
357 * to know about.
358 */
359 trans_cfg.op_mode = op_mode;
360 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
361 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
362 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
363
Emmanuel Grumbach25b9ea52013-03-06 11:53:38 +0200364 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100365 trans_cfg.bc_table_dword = true;
366
367 if (!iwlwifi_mod_params.wd_disable)
368 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
369 else
370 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
371
372 trans_cfg.command_names = iwl_mvm_cmd_strings;
373
374 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
375 trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO;
376
377 snprintf(mvm->hw->wiphy->fw_version,
378 sizeof(mvm->hw->wiphy->fw_version),
379 "%s", fw->fw_version);
380
381 /* Configure transport layer */
382 iwl_trans_configure(mvm->trans, &trans_cfg);
383
384 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
385 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
386
387 /* set up notification wait support */
388 iwl_notification_wait_init(&mvm->notif_wait);
389
390 /* Init phy db */
391 mvm->phy_db = iwl_phy_db_init(trans);
392 if (!mvm->phy_db) {
393 IWL_ERR(mvm, "Cannot init phy_db\n");
394 goto out_free;
395 }
396
397 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
398 mvm->cfg->name, mvm->trans->hw_rev);
399
400 err = iwl_trans_start_hw(mvm->trans);
401 if (err)
402 goto out_free;
403
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300404 iwl_mvm_tt_initialize(mvm);
405
Johannes Berg8ca151b2013-01-24 14:25:36 +0100406 mutex_lock(&mvm->mutex);
407 err = iwl_run_init_mvm_ucode(mvm, true);
408 mutex_unlock(&mvm->mutex);
Eran Harary4f593342013-05-13 07:53:26 +0300409 /* returns 0 if successful, 1 if success but in rfkill */
410 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
Johannes Berg8ca151b2013-01-24 14:25:36 +0100411 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
412 goto out_free;
413 }
414
415 /* Stop the hw after the ALIVE and NVM has been read */
416 if (!iwlmvm_mod_params.init_dbg)
417 iwl_trans_stop_hw(mvm->trans, false);
418
419 scan_size = sizeof(struct iwl_scan_cmd) +
420 mvm->fw->ucode_capa.max_probe_length +
421 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel));
422 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
423 if (!mvm->scan_cmd)
424 goto out_free;
425
426 err = iwl_mvm_mac_setup_register(mvm);
427 if (err)
428 goto out_free;
429
430 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
431 if (err)
432 goto out_unregister;
433
434 return op_mode;
435
436 out_unregister:
437 ieee80211_unregister_hw(mvm->hw);
438 out_free:
439 iwl_phy_db_free(mvm->phy_db);
440 kfree(mvm->scan_cmd);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100441 iwl_trans_stop_hw(trans, true);
442 ieee80211_free_hw(mvm->hw);
443 return NULL;
444}
445
446static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
447{
448 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
449 int i;
450
451 iwl_mvm_leds_exit(mvm);
452
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300453 iwl_mvm_tt_exit(mvm);
454
Johannes Berg8ca151b2013-01-24 14:25:36 +0100455 ieee80211_unregister_hw(mvm->hw);
456
457 kfree(mvm->scan_cmd);
458
Johannes Bergafc66bb2013-05-03 11:44:16 +0200459#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
460 kfree(mvm->d3_resume_sram);
461#endif
462
Johannes Berg8ca151b2013-01-24 14:25:36 +0100463 iwl_trans_stop_hw(mvm->trans, true);
464
465 iwl_phy_db_free(mvm->phy_db);
466 mvm->phy_db = NULL;
467
Johannes Berg8ca151b2013-01-24 14:25:36 +0100468 iwl_free_nvm_data(mvm->nvm_data);
469 for (i = 0; i < NVM_NUM_OF_SECTIONS; i++)
470 kfree(mvm->nvm_sections[i].data);
471
472 ieee80211_free_hw(mvm->hw);
473}
474
475struct iwl_async_handler_entry {
476 struct list_head list;
477 struct iwl_rx_cmd_buffer rxb;
478 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
479 struct iwl_device_cmd *cmd);
480};
481
482void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
483{
484 struct iwl_async_handler_entry *entry, *tmp;
485
486 spin_lock_bh(&mvm->async_handlers_lock);
487 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
488 iwl_free_rxb(&entry->rxb);
489 list_del(&entry->list);
490 kfree(entry);
491 }
492 spin_unlock_bh(&mvm->async_handlers_lock);
493}
494
495static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
496{
497 struct iwl_mvm *mvm =
498 container_of(wk, struct iwl_mvm, async_handlers_wk);
499 struct iwl_async_handler_entry *entry, *tmp;
500 struct list_head local_list;
501
502 INIT_LIST_HEAD(&local_list);
503
504 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
505 mutex_lock(&mvm->mutex);
506
507 /*
508 * Sync with Rx path with a lock. Remove all the entries from this list,
509 * add them to a local one (lock free), and then handle them.
510 */
511 spin_lock_bh(&mvm->async_handlers_lock);
512 list_splice_init(&mvm->async_handlers_list, &local_list);
513 spin_unlock_bh(&mvm->async_handlers_lock);
514
515 list_for_each_entry_safe(entry, tmp, &local_list, list) {
516 if (entry->fn(mvm, &entry->rxb, NULL))
517 IWL_WARN(mvm,
518 "returned value from ASYNC handlers are ignored\n");
519 iwl_free_rxb(&entry->rxb);
520 list_del(&entry->list);
521 kfree(entry);
522 }
523 mutex_unlock(&mvm->mutex);
524}
525
526static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
527 struct iwl_rx_cmd_buffer *rxb,
528 struct iwl_device_cmd *cmd)
529{
530 struct iwl_rx_packet *pkt = rxb_addr(rxb);
531 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
532 u8 i;
533
534 /*
535 * Do the notification wait before RX handlers so
536 * even if the RX handler consumes the RXB we have
537 * access to it in the notification wait entry.
538 */
539 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
540
541 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
542 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200543 struct iwl_async_handler_entry *entry;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100544
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200545 if (rx_h->cmd_id != pkt->hdr.cmd)
546 continue;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100547
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200548 if (!rx_h->async)
549 return rx_h->fn(mvm, rxb, cmd);
550
551 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
552 /* we can't do much... */
553 if (!entry)
554 return 0;
555
556 entry->rxb._page = rxb_steal_page(rxb);
557 entry->rxb._offset = rxb->_offset;
558 entry->rxb._rx_page_order = rxb->_rx_page_order;
559 entry->fn = rx_h->fn;
560 spin_lock(&mvm->async_handlers_lock);
561 list_add_tail(&entry->list, &mvm->async_handlers_list);
562 spin_unlock(&mvm->async_handlers_lock);
563 schedule_work(&mvm->async_handlers_wk);
564 break;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100565 }
566
567 return 0;
568}
569
570static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
571{
572 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
573 int mq = mvm->queue_to_mac80211[queue];
574
575 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
576 return;
577
578 if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) {
579 IWL_DEBUG_TX_QUEUES(mvm,
580 "queue %d (mac80211 %d) already stopped\n",
581 queue, mq);
582 return;
583 }
584
585 set_bit(mq, &mvm->transport_queue_stop);
586 ieee80211_stop_queue(mvm->hw, mq);
587}
588
589static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
590{
591 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
592 int mq = mvm->queue_to_mac80211[queue];
593
594 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
595 return;
596
597 if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) {
598 IWL_DEBUG_TX_QUEUES(mvm,
599 "queue %d (mac80211 %d) already awake\n",
600 queue, mq);
601 return;
602 }
603
604 clear_bit(mq, &mvm->transport_queue_stop);
605
606 ieee80211_wake_queue(mvm->hw, mq);
607}
608
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300609void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
610{
611 if (state)
612 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
613 else
614 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
615
616 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
617}
618
Johannes Berg8ca151b2013-01-24 14:25:36 +0100619static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
620{
621 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
622
623 if (state)
624 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
625 else
626 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
627
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300628 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
Johannes Berg8ca151b2013-01-24 14:25:36 +0100629}
630
631static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
632{
633 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
634 struct ieee80211_tx_info *info;
635
636 info = IEEE80211_SKB_CB(skb);
637 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
638 ieee80211_free_txskb(mvm->hw, skb);
639}
640
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200641static void iwl_mvm_nic_restart(struct iwl_mvm *mvm)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100642{
Johannes Berg8ca151b2013-01-24 14:25:36 +0100643 iwl_abort_notification_waits(&mvm->notif_wait);
644
645 /*
646 * If we're restarting already, don't cycle restarts.
647 * If INIT fw asserted, it will likely fail again.
648 * If WoWLAN fw asserted, don't restart either, mac80211
649 * can't recover this since we're already half suspended.
650 */
651 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
652 IWL_ERR(mvm, "Firmware error during reconfiguration! Abort.\n");
653 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR &&
654 iwlwifi_mod_params.restart_fw) {
655 /*
656 * This is a bit racy, but worst case we tell mac80211 about
657 * a stopped/aborted (sched) scan when that was already done
658 * which is not a problem. It is necessary to abort any scan
659 * here because mac80211 requires having the scan cleared
660 * before restarting.
661 * We'll reset the scan_status to NONE in restart cleanup in
662 * the next start() call from mac80211.
663 */
664 switch (mvm->scan_status) {
665 case IWL_MVM_SCAN_NONE:
666 break;
667 case IWL_MVM_SCAN_OS:
668 ieee80211_scan_completed(mvm->hw, true);
669 break;
670 }
671
672 ieee80211_restart_hw(mvm->hw);
673 }
674}
675
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200676static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
677{
678 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
679
680 iwl_mvm_dump_nic_error_log(mvm);
Matti Gottlieb0c393d42013-07-04 14:47:30 +0300681 if (!iwlwifi_mod_params.restart_fw)
682 iwl_mvm_dump_sram(mvm);
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200683
684 iwl_mvm_nic_restart(mvm);
685}
686
Johannes Berg8ca151b2013-01-24 14:25:36 +0100687static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
688{
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200689 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
690
Johannes Berg8ca151b2013-01-24 14:25:36 +0100691 WARN_ON(1);
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200692 iwl_mvm_nic_restart(mvm);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100693}
694
695static const struct iwl_op_mode_ops iwl_mvm_ops = {
696 .start = iwl_op_mode_mvm_start,
697 .stop = iwl_op_mode_mvm_stop,
698 .rx = iwl_mvm_rx_dispatch,
699 .queue_full = iwl_mvm_stop_sw_queue,
700 .queue_not_full = iwl_mvm_wake_sw_queue,
701 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
702 .free_skb = iwl_mvm_free_skb,
703 .nic_error = iwl_mvm_nic_error,
704 .cmd_queue_full = iwl_mvm_cmd_queue_full,
705 .nic_config = iwl_mvm_nic_config,
706};