blob: 8431637e38f25eed2743ea5e4b5b3cb34c8d6df8 [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),
218 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
219
220 RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false),
221 RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, false),
222
Emmanuel Grumbachf421f9c2013-01-17 14:20:29 +0200223 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
Ilan Peer571765c2013-03-05 15:26:03 +0200224 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, false),
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300225 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
Emmanuel Grumbachf421f9c2013-01-17 14:20:29 +0200226
Johannes Berg8ca151b2013-01-24 14:25:36 +0100227 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
228 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
229
230 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
231};
232#undef RX_HANDLER
233#define CMD(x) [x] = #x
234
235static const char *iwl_mvm_cmd_strings[REPLY_MAX] = {
236 CMD(MVM_ALIVE),
237 CMD(REPLY_ERROR),
238 CMD(INIT_COMPLETE_NOTIF),
239 CMD(PHY_CONTEXT_CMD),
240 CMD(MGMT_MCAST_KEY),
241 CMD(TX_CMD),
242 CMD(TXPATH_FLUSH),
243 CMD(MAC_CONTEXT_CMD),
244 CMD(TIME_EVENT_CMD),
245 CMD(TIME_EVENT_NOTIFICATION),
246 CMD(BINDING_CONTEXT_CMD),
247 CMD(TIME_QUOTA_CMD),
248 CMD(RADIO_VERSION_NOTIFICATION),
249 CMD(SCAN_REQUEST_CMD),
250 CMD(SCAN_ABORT_CMD),
251 CMD(SCAN_START_NOTIFICATION),
252 CMD(SCAN_RESULTS_NOTIFICATION),
253 CMD(SCAN_COMPLETE_NOTIFICATION),
254 CMD(NVM_ACCESS_CMD),
255 CMD(PHY_CONFIGURATION_CMD),
256 CMD(CALIB_RES_NOTIF_PHY_DB),
257 CMD(SET_CALIB_DEFAULT_CMD),
258 CMD(CALIBRATION_COMPLETE_NOTIFICATION),
259 CMD(ADD_STA),
260 CMD(REMOVE_STA),
261 CMD(LQ_CMD),
262 CMD(SCAN_OFFLOAD_CONFIG_CMD),
263 CMD(SCAN_OFFLOAD_REQUEST_CMD),
264 CMD(SCAN_OFFLOAD_ABORT_CMD),
265 CMD(SCAN_OFFLOAD_COMPLETE),
266 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
267 CMD(POWER_TABLE_CMD),
268 CMD(WEP_KEY),
269 CMD(REPLY_RX_PHY_CMD),
270 CMD(REPLY_RX_MPDU_CMD),
Ilan Peer571765c2013-03-05 15:26:03 +0200271 CMD(BEACON_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100272 CMD(BEACON_TEMPLATE_CMD),
273 CMD(STATISTICS_NOTIFICATION),
274 CMD(TX_ANT_CONFIGURATION_CMD),
275 CMD(D3_CONFIG_CMD),
276 CMD(PROT_OFFLOAD_CONFIG_CMD),
277 CMD(OFFLOADS_QUERY_CMD),
278 CMD(REMOTE_WAKE_CONFIG_CMD),
279 CMD(WOWLAN_PATTERNS),
280 CMD(WOWLAN_CONFIGURATION),
281 CMD(WOWLAN_TSC_RSC_PARAM),
282 CMD(WOWLAN_TKIP_PARAM),
283 CMD(WOWLAN_KEK_KCK_MATERIAL),
284 CMD(WOWLAN_GET_STATUSES),
285 CMD(WOWLAN_TX_POWER_PER_DB),
286 CMD(NET_DETECT_CONFIG_CMD),
287 CMD(NET_DETECT_PROFILES_QUERY_CMD),
288 CMD(NET_DETECT_PROFILES_CMD),
289 CMD(NET_DETECT_HOTSPOTS_CMD),
290 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD),
Emmanuel Grumbach3b4612f2013-03-03 09:14:51 +0200291 CMD(CARD_STATE_NOTIFICATION),
Emmanuel Grumbachfb3ceb82013-01-14 15:04:01 +0200292 CMD(BT_COEX_PRIO_TABLE),
293 CMD(BT_COEX_PROT_ENV),
294 CMD(BT_PROFILE_NOTIFICATION),
295 CMD(BT_CONFIG),
Emmanuel Grumbach51b6b9e2013-05-02 15:01:24 +0300296 CMD(MCAST_FILTER_CMD),
Hila Gonen7df15b12012-12-12 11:16:19 +0200297 CMD(REPLY_BEACON_FILTERING_CMD),
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300298 CMD(REPLY_THERMAL_MNG_BACKOFF),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100299};
300#undef CMD
301
302/* this forward declaration can avoid to export the function */
303static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
304
305static struct iwl_op_mode *
306iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
307 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
308{
309 struct ieee80211_hw *hw;
310 struct iwl_op_mode *op_mode;
311 struct iwl_mvm *mvm;
312 struct iwl_trans_config trans_cfg = {};
313 static const u8 no_reclaim_cmds[] = {
314 TX_CMD,
315 };
316 int err, scan_size;
317
Johannes Berg8ca151b2013-01-24 14:25:36 +0100318 /********************************
319 * 1. Allocating and configuring HW data
320 ********************************/
321 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
322 sizeof(struct iwl_mvm),
323 &iwl_mvm_hw_ops);
324 if (!hw)
325 return NULL;
326
327 op_mode = hw->priv;
328 op_mode->ops = &iwl_mvm_ops;
329 op_mode->trans = trans;
330
331 mvm = IWL_OP_MODE_GET_MVM(op_mode);
332 mvm->dev = trans->dev;
333 mvm->trans = trans;
334 mvm->cfg = cfg;
335 mvm->fw = fw;
336 mvm->hw = hw;
337
338 mutex_init(&mvm->mutex);
339 spin_lock_init(&mvm->async_handlers_lock);
340 INIT_LIST_HEAD(&mvm->time_event_list);
341 INIT_LIST_HEAD(&mvm->async_handlers_list);
342 spin_lock_init(&mvm->time_event_lock);
343
344 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
345 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
346 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
347
348 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
349
350 /*
351 * Populate the state variables that the transport layer needs
352 * to know about.
353 */
354 trans_cfg.op_mode = op_mode;
355 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
356 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
357 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
358
Emmanuel Grumbach25b9ea52013-03-06 11:53:38 +0200359 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100360 trans_cfg.bc_table_dword = true;
361
362 if (!iwlwifi_mod_params.wd_disable)
363 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
364 else
365 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
366
367 trans_cfg.command_names = iwl_mvm_cmd_strings;
368
369 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
370 trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO;
371
372 snprintf(mvm->hw->wiphy->fw_version,
373 sizeof(mvm->hw->wiphy->fw_version),
374 "%s", fw->fw_version);
375
376 /* Configure transport layer */
377 iwl_trans_configure(mvm->trans, &trans_cfg);
378
379 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
380 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
381
382 /* set up notification wait support */
383 iwl_notification_wait_init(&mvm->notif_wait);
384
385 /* Init phy db */
386 mvm->phy_db = iwl_phy_db_init(trans);
387 if (!mvm->phy_db) {
388 IWL_ERR(mvm, "Cannot init phy_db\n");
389 goto out_free;
390 }
391
392 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
393 mvm->cfg->name, mvm->trans->hw_rev);
394
395 err = iwl_trans_start_hw(mvm->trans);
396 if (err)
397 goto out_free;
398
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300399 iwl_mvm_tt_initialize(mvm);
400
Johannes Berg8ca151b2013-01-24 14:25:36 +0100401 mutex_lock(&mvm->mutex);
402 err = iwl_run_init_mvm_ucode(mvm, true);
403 mutex_unlock(&mvm->mutex);
Eran Harary4f593342013-05-13 07:53:26 +0300404 /* returns 0 if successful, 1 if success but in rfkill */
405 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
Johannes Berg8ca151b2013-01-24 14:25:36 +0100406 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
407 goto out_free;
408 }
409
410 /* Stop the hw after the ALIVE and NVM has been read */
411 if (!iwlmvm_mod_params.init_dbg)
412 iwl_trans_stop_hw(mvm->trans, false);
413
414 scan_size = sizeof(struct iwl_scan_cmd) +
415 mvm->fw->ucode_capa.max_probe_length +
416 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel));
417 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
418 if (!mvm->scan_cmd)
419 goto out_free;
420
421 err = iwl_mvm_mac_setup_register(mvm);
422 if (err)
423 goto out_free;
424
425 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
426 if (err)
427 goto out_unregister;
428
429 return op_mode;
430
431 out_unregister:
432 ieee80211_unregister_hw(mvm->hw);
433 out_free:
434 iwl_phy_db_free(mvm->phy_db);
435 kfree(mvm->scan_cmd);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100436 iwl_trans_stop_hw(trans, true);
437 ieee80211_free_hw(mvm->hw);
438 return NULL;
439}
440
441static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
442{
443 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
444 int i;
445
446 iwl_mvm_leds_exit(mvm);
447
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300448 iwl_mvm_tt_exit(mvm);
449
Johannes Berg8ca151b2013-01-24 14:25:36 +0100450 ieee80211_unregister_hw(mvm->hw);
451
452 kfree(mvm->scan_cmd);
453
Johannes Bergafc66bb2013-05-03 11:44:16 +0200454#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
455 kfree(mvm->d3_resume_sram);
456#endif
457
Johannes Berg8ca151b2013-01-24 14:25:36 +0100458 iwl_trans_stop_hw(mvm->trans, true);
459
460 iwl_phy_db_free(mvm->phy_db);
461 mvm->phy_db = NULL;
462
Johannes Berg8ca151b2013-01-24 14:25:36 +0100463 iwl_free_nvm_data(mvm->nvm_data);
464 for (i = 0; i < NVM_NUM_OF_SECTIONS; i++)
465 kfree(mvm->nvm_sections[i].data);
466
467 ieee80211_free_hw(mvm->hw);
468}
469
470struct iwl_async_handler_entry {
471 struct list_head list;
472 struct iwl_rx_cmd_buffer rxb;
473 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
474 struct iwl_device_cmd *cmd);
475};
476
477void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
478{
479 struct iwl_async_handler_entry *entry, *tmp;
480
481 spin_lock_bh(&mvm->async_handlers_lock);
482 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
483 iwl_free_rxb(&entry->rxb);
484 list_del(&entry->list);
485 kfree(entry);
486 }
487 spin_unlock_bh(&mvm->async_handlers_lock);
488}
489
490static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
491{
492 struct iwl_mvm *mvm =
493 container_of(wk, struct iwl_mvm, async_handlers_wk);
494 struct iwl_async_handler_entry *entry, *tmp;
495 struct list_head local_list;
496
497 INIT_LIST_HEAD(&local_list);
498
499 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
500 mutex_lock(&mvm->mutex);
501
502 /*
503 * Sync with Rx path with a lock. Remove all the entries from this list,
504 * add them to a local one (lock free), and then handle them.
505 */
506 spin_lock_bh(&mvm->async_handlers_lock);
507 list_splice_init(&mvm->async_handlers_list, &local_list);
508 spin_unlock_bh(&mvm->async_handlers_lock);
509
510 list_for_each_entry_safe(entry, tmp, &local_list, list) {
511 if (entry->fn(mvm, &entry->rxb, NULL))
512 IWL_WARN(mvm,
513 "returned value from ASYNC handlers are ignored\n");
514 iwl_free_rxb(&entry->rxb);
515 list_del(&entry->list);
516 kfree(entry);
517 }
518 mutex_unlock(&mvm->mutex);
519}
520
521static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
522 struct iwl_rx_cmd_buffer *rxb,
523 struct iwl_device_cmd *cmd)
524{
525 struct iwl_rx_packet *pkt = rxb_addr(rxb);
526 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
527 u8 i;
528
529 /*
530 * Do the notification wait before RX handlers so
531 * even if the RX handler consumes the RXB we have
532 * access to it in the notification wait entry.
533 */
534 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
535
536 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
537 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200538 struct iwl_async_handler_entry *entry;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100539
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200540 if (rx_h->cmd_id != pkt->hdr.cmd)
541 continue;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100542
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200543 if (!rx_h->async)
544 return rx_h->fn(mvm, rxb, cmd);
545
546 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
547 /* we can't do much... */
548 if (!entry)
549 return 0;
550
551 entry->rxb._page = rxb_steal_page(rxb);
552 entry->rxb._offset = rxb->_offset;
553 entry->rxb._rx_page_order = rxb->_rx_page_order;
554 entry->fn = rx_h->fn;
555 spin_lock(&mvm->async_handlers_lock);
556 list_add_tail(&entry->list, &mvm->async_handlers_list);
557 spin_unlock(&mvm->async_handlers_lock);
558 schedule_work(&mvm->async_handlers_wk);
559 break;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100560 }
561
562 return 0;
563}
564
565static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
566{
567 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
568 int mq = mvm->queue_to_mac80211[queue];
569
570 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
571 return;
572
573 if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) {
574 IWL_DEBUG_TX_QUEUES(mvm,
575 "queue %d (mac80211 %d) already stopped\n",
576 queue, mq);
577 return;
578 }
579
580 set_bit(mq, &mvm->transport_queue_stop);
581 ieee80211_stop_queue(mvm->hw, mq);
582}
583
584static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
585{
586 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
587 int mq = mvm->queue_to_mac80211[queue];
588
589 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
590 return;
591
592 if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) {
593 IWL_DEBUG_TX_QUEUES(mvm,
594 "queue %d (mac80211 %d) already awake\n",
595 queue, mq);
596 return;
597 }
598
599 clear_bit(mq, &mvm->transport_queue_stop);
600
601 ieee80211_wake_queue(mvm->hw, mq);
602}
603
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300604void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
605{
606 if (state)
607 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
608 else
609 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
610
611 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
612}
613
Johannes Berg8ca151b2013-01-24 14:25:36 +0100614static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
615{
616 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
617
618 if (state)
619 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
620 else
621 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
622
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300623 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
Johannes Berg8ca151b2013-01-24 14:25:36 +0100624}
625
626static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
627{
628 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
629 struct ieee80211_tx_info *info;
630
631 info = IEEE80211_SKB_CB(skb);
632 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
633 ieee80211_free_txskb(mvm->hw, skb);
634}
635
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200636static void iwl_mvm_nic_restart(struct iwl_mvm *mvm)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100637{
Johannes Berg8ca151b2013-01-24 14:25:36 +0100638 iwl_abort_notification_waits(&mvm->notif_wait);
639
640 /*
641 * If we're restarting already, don't cycle restarts.
642 * If INIT fw asserted, it will likely fail again.
643 * If WoWLAN fw asserted, don't restart either, mac80211
644 * can't recover this since we're already half suspended.
645 */
646 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
647 IWL_ERR(mvm, "Firmware error during reconfiguration! Abort.\n");
648 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR &&
649 iwlwifi_mod_params.restart_fw) {
650 /*
651 * This is a bit racy, but worst case we tell mac80211 about
652 * a stopped/aborted (sched) scan when that was already done
653 * which is not a problem. It is necessary to abort any scan
654 * here because mac80211 requires having the scan cleared
655 * before restarting.
656 * We'll reset the scan_status to NONE in restart cleanup in
657 * the next start() call from mac80211.
658 */
659 switch (mvm->scan_status) {
660 case IWL_MVM_SCAN_NONE:
661 break;
662 case IWL_MVM_SCAN_OS:
663 ieee80211_scan_completed(mvm->hw, true);
664 break;
665 }
666
667 ieee80211_restart_hw(mvm->hw);
668 }
669}
670
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200671static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
672{
673 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
674
675 iwl_mvm_dump_nic_error_log(mvm);
676
677 iwl_mvm_nic_restart(mvm);
678}
679
Johannes Berg8ca151b2013-01-24 14:25:36 +0100680static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
681{
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200682 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
683
Johannes Berg8ca151b2013-01-24 14:25:36 +0100684 WARN_ON(1);
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200685 iwl_mvm_nic_restart(mvm);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100686}
687
688static const struct iwl_op_mode_ops iwl_mvm_ops = {
689 .start = iwl_op_mode_mvm_start,
690 .stop = iwl_op_mode_mvm_stop,
691 .rx = iwl_mvm_rx_dispatch,
692 .queue_full = iwl_mvm_stop_sw_queue,
693 .queue_not_full = iwl_mvm_wake_sw_queue,
694 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
695 .free_skb = iwl_mvm_free_skb,
696 .nic_error = iwl_mvm_nic_error,
697 .cmd_queue_full = iwl_mvm_cmd_queue_full,
698 .nic_config = iwl_mvm_nic_config,
699};