blob: cf33a128ef05e4030bed79841d235c8a138045f2 [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 *
Emmanuel Grumbach51368bf2013-12-30 13:15:54 +02008 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
Johannes Berg8ca151b2013-01-24 14:25:36 +01009 *
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 *
Emmanuel Grumbach51368bf2013-12-30 13:15:54 +020033 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
Johannes Berg8ca151b2013-01-24 14:25:36 +010034 * 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 */
Eran Harary3073d8c2013-12-29 14:09:59 +0200188 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
189 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
190 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
191 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100192}
193
194struct iwl_rx_handlers {
195 u8 cmd_id;
196 bool async;
197 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
198 struct iwl_device_cmd *cmd);
199};
200
201#define RX_HANDLER(_cmd_id, _fn, _async) \
202 { .cmd_id = _cmd_id , .fn = _fn , .async = _async }
203
204/*
205 * Handlers for fw notifications
206 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
207 * This list should be in order of frequency for performance purposes.
208 *
209 * The handler can be SYNC - this means that it will be called in the Rx path
210 * which can't acquire mvm->mutex. If the handler needs to hold mvm->mutex (and
211 * only in this case!), it should be set as ASYNC. In that case, it will be
212 * called from a worker with mvm->mutex held.
213 */
214static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
215 RX_HANDLER(REPLY_RX_MPDU_CMD, iwl_mvm_rx_rx_mpdu, false),
216 RX_HANDLER(REPLY_RX_PHY_CMD, iwl_mvm_rx_rx_phy_cmd, false),
217 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, false),
218 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, false),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100219
Emmanuel Grumbachf421f9c2013-01-17 14:20:29 +0200220 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true),
Ilan Peer571765c2013-03-05 15:26:03 +0200221 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, false),
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300222 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true),
Emmanuel Grumbachf421f9c2013-01-17 14:20:29 +0200223
Emmanuel Grumbach497b49d2013-06-02 20:54:48 +0300224 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false),
225
Johannes Berg3e56ead2013-02-15 22:23:18 +0100226 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false),
227
Emmanuel Grumbach497b49d2013-06-02 20:54:48 +0300228 RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false),
229 RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, false),
David Spinadel35a000b2013-08-28 09:29:43 +0300230 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
231 iwl_mvm_rx_scan_offload_complete_notif, false),
232 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_sched_scan_results,
233 false),
Emmanuel Grumbach497b49d2013-06-02 20:54:48 +0300234
Johannes Berg8ca151b2013-01-24 14:25:36 +0100235 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
236 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
237
Hila Gonend64048e2013-03-13 18:00:03 +0200238 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
239 false),
240
Johannes Berg8ca151b2013-01-24 14:25:36 +0100241 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
Alexander Bondar175a70b2013-04-14 20:59:37 +0300242 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
243 iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100244};
245#undef RX_HANDLER
246#define CMD(x) [x] = #x
247
248static const char *iwl_mvm_cmd_strings[REPLY_MAX] = {
249 CMD(MVM_ALIVE),
250 CMD(REPLY_ERROR),
251 CMD(INIT_COMPLETE_NOTIF),
252 CMD(PHY_CONTEXT_CMD),
253 CMD(MGMT_MCAST_KEY),
254 CMD(TX_CMD),
255 CMD(TXPATH_FLUSH),
256 CMD(MAC_CONTEXT_CMD),
257 CMD(TIME_EVENT_CMD),
258 CMD(TIME_EVENT_NOTIFICATION),
259 CMD(BINDING_CONTEXT_CMD),
260 CMD(TIME_QUOTA_CMD),
Johannes Berg4ac6cb52013-08-08 09:30:13 +0200261 CMD(NON_QOS_TX_COUNTER_CMD),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100262 CMD(RADIO_VERSION_NOTIFICATION),
263 CMD(SCAN_REQUEST_CMD),
264 CMD(SCAN_ABORT_CMD),
265 CMD(SCAN_START_NOTIFICATION),
266 CMD(SCAN_RESULTS_NOTIFICATION),
267 CMD(SCAN_COMPLETE_NOTIFICATION),
268 CMD(NVM_ACCESS_CMD),
269 CMD(PHY_CONFIGURATION_CMD),
270 CMD(CALIB_RES_NOTIF_PHY_DB),
271 CMD(SET_CALIB_DEFAULT_CMD),
272 CMD(CALIBRATION_COMPLETE_NOTIFICATION),
Max Stepanov5a258aa2013-04-07 09:11:21 +0300273 CMD(ADD_STA_KEY),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100274 CMD(ADD_STA),
275 CMD(REMOVE_STA),
276 CMD(LQ_CMD),
277 CMD(SCAN_OFFLOAD_CONFIG_CMD),
David Spinadel35a000b2013-08-28 09:29:43 +0300278 CMD(MATCH_FOUND_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100279 CMD(SCAN_OFFLOAD_REQUEST_CMD),
280 CMD(SCAN_OFFLOAD_ABORT_CMD),
281 CMD(SCAN_OFFLOAD_COMPLETE),
282 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
283 CMD(POWER_TABLE_CMD),
284 CMD(WEP_KEY),
285 CMD(REPLY_RX_PHY_CMD),
286 CMD(REPLY_RX_MPDU_CMD),
Ilan Peer571765c2013-03-05 15:26:03 +0200287 CMD(BEACON_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100288 CMD(BEACON_TEMPLATE_CMD),
289 CMD(STATISTICS_NOTIFICATION),
Johannes Berg3e56ead2013-02-15 22:23:18 +0100290 CMD(EOSP_NOTIFICATION),
Matti Gottlieb88f2fd72013-07-09 15:25:46 +0300291 CMD(REDUCE_TX_POWER_CMD),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100292 CMD(TX_ANT_CONFIGURATION_CMD),
293 CMD(D3_CONFIG_CMD),
294 CMD(PROT_OFFLOAD_CONFIG_CMD),
295 CMD(OFFLOADS_QUERY_CMD),
296 CMD(REMOTE_WAKE_CONFIG_CMD),
297 CMD(WOWLAN_PATTERNS),
298 CMD(WOWLAN_CONFIGURATION),
299 CMD(WOWLAN_TSC_RSC_PARAM),
300 CMD(WOWLAN_TKIP_PARAM),
301 CMD(WOWLAN_KEK_KCK_MATERIAL),
302 CMD(WOWLAN_GET_STATUSES),
303 CMD(WOWLAN_TX_POWER_PER_DB),
304 CMD(NET_DETECT_CONFIG_CMD),
305 CMD(NET_DETECT_PROFILES_QUERY_CMD),
306 CMD(NET_DETECT_PROFILES_CMD),
307 CMD(NET_DETECT_HOTSPOTS_CMD),
308 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD),
Emmanuel Grumbach3b4612f2013-03-03 09:14:51 +0200309 CMD(CARD_STATE_NOTIFICATION),
Hila Gonend64048e2013-03-13 18:00:03 +0200310 CMD(MISSED_BEACONS_NOTIFICATION),
Emmanuel Grumbachfb3ceb82013-01-14 15:04:01 +0200311 CMD(BT_COEX_PRIO_TABLE),
312 CMD(BT_COEX_PROT_ENV),
313 CMD(BT_PROFILE_NOTIFICATION),
314 CMD(BT_CONFIG),
Emmanuel Grumbach51b6b9e2013-05-02 15:01:24 +0300315 CMD(MCAST_FILTER_CMD),
Eliad Pellerc87163b2014-01-08 10:11:11 +0200316 CMD(BCAST_FILTER_CMD),
David Spinadel7a06a382014-01-09 09:55:38 +0200317 CMD(REPLY_SF_CFG_CMD),
Hila Gonen7df15b12012-12-12 11:16:19 +0200318 CMD(REPLY_BEACON_FILTERING_CMD),
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300319 CMD(REPLY_THERMAL_MNG_BACKOFF),
Alexander Bondare811ada2013-03-10 15:29:44 +0200320 CMD(MAC_PM_POWER_TABLE),
Emmanuel Grumbachdac94da2013-06-18 07:35:27 +0300321 CMD(BT_COEX_CI),
Alexander Bondar175a70b2013-04-14 20:59:37 +0300322 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100323};
324#undef CMD
325
326/* this forward declaration can avoid to export the function */
327static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
328
Ido Yariv0c0e2c72014-01-16 21:12:02 -0500329static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
330{
331 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
332
333 if (!pwr_tx_backoff)
334 return 0;
335
336 while (pwr_tx_backoff->pwr) {
337 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
338 return pwr_tx_backoff->backoff;
339
340 pwr_tx_backoff++;
341 }
342
343 return 0;
344}
345
Johannes Berg8ca151b2013-01-24 14:25:36 +0100346static struct iwl_op_mode *
347iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
348 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
349{
350 struct ieee80211_hw *hw;
351 struct iwl_op_mode *op_mode;
352 struct iwl_mvm *mvm;
353 struct iwl_trans_config trans_cfg = {};
354 static const u8 no_reclaim_cmds[] = {
355 TX_CMD,
356 };
357 int err, scan_size;
Ido Yariv0c0e2c72014-01-16 21:12:02 -0500358 u32 min_backoff;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100359
Emmanuel Grumbachc4d83272014-01-14 08:45:26 +0200360 /*
361 * We use IWL_MVM_STATION_COUNT to check the validity of the station
362 * index all over the driver - check that its value corresponds to the
363 * array size.
364 */
365 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
366
Johannes Berg8ca151b2013-01-24 14:25:36 +0100367 /********************************
368 * 1. Allocating and configuring HW data
369 ********************************/
370 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
371 sizeof(struct iwl_mvm),
372 &iwl_mvm_hw_ops);
373 if (!hw)
374 return NULL;
375
376 op_mode = hw->priv;
377 op_mode->ops = &iwl_mvm_ops;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100378
379 mvm = IWL_OP_MODE_GET_MVM(op_mode);
380 mvm->dev = trans->dev;
381 mvm->trans = trans;
382 mvm->cfg = cfg;
383 mvm->fw = fw;
384 mvm->hw = hw;
385
Eran Harary291aa7c2013-07-03 11:00:06 +0300386 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
387
Eytan Lifshitz19e737c2013-09-09 13:30:15 +0200388 mvm->aux_queue = 15;
389 mvm->first_agg_queue = 16;
390 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
391 if (mvm->cfg->base_params->num_of_queues == 16) {
392 mvm->aux_queue = 11;
393 mvm->first_agg_queue = 12;
394 }
Lilach Edelstein1f3b0ff2013-10-06 13:03:32 +0200395 mvm->sf_state = SF_UNINIT;
Eytan Lifshitz19e737c2013-09-09 13:30:15 +0200396
Johannes Berg8ca151b2013-01-24 14:25:36 +0100397 mutex_init(&mvm->mutex);
398 spin_lock_init(&mvm->async_handlers_lock);
399 INIT_LIST_HEAD(&mvm->time_event_list);
400 INIT_LIST_HEAD(&mvm->async_handlers_list);
401 spin_lock_init(&mvm->time_event_lock);
402
403 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
404 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
405 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
406
407 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
408
409 /*
410 * Populate the state variables that the transport layer needs
411 * to know about.
412 */
413 trans_cfg.op_mode = op_mode;
414 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
415 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
416 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
417
Emmanuel Grumbach25b9ea52013-03-06 11:53:38 +0200418 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100419 trans_cfg.bc_table_dword = true;
420
421 if (!iwlwifi_mod_params.wd_disable)
422 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
423 else
424 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
425
426 trans_cfg.command_names = iwl_mvm_cmd_strings;
427
428 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
429 trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO;
430
431 snprintf(mvm->hw->wiphy->fw_version,
432 sizeof(mvm->hw->wiphy->fw_version),
433 "%s", fw->fw_version);
434
435 /* Configure transport layer */
436 iwl_trans_configure(mvm->trans, &trans_cfg);
437
438 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
439 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
440
441 /* set up notification wait support */
442 iwl_notification_wait_init(&mvm->notif_wait);
443
444 /* Init phy db */
445 mvm->phy_db = iwl_phy_db_init(trans);
446 if (!mvm->phy_db) {
447 IWL_ERR(mvm, "Cannot init phy_db\n");
448 goto out_free;
449 }
450
451 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
452 mvm->cfg->name, mvm->trans->hw_rev);
453
Ido Yariv0c0e2c72014-01-16 21:12:02 -0500454 min_backoff = calc_min_backoff(trans, cfg);
455 iwl_mvm_tt_initialize(mvm, min_backoff);
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300456
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200457 /*
458 * If the NVM exists in an external file,
459 * there is no need to unnecessarily power up the NIC at driver load
460 */
461 if (iwlwifi_mod_params.nvm_file) {
Eliad Peller8c678ed2013-12-09 13:15:02 +0200462 err = iwl_nvm_init(mvm);
463 if (err)
464 goto out_free;
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200465 } else {
466 err = iwl_trans_start_hw(mvm->trans);
467 if (err)
468 goto out_free;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100469
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200470 mutex_lock(&mvm->mutex);
471 err = iwl_run_init_mvm_ucode(mvm, true);
Arik Nemtsova4082842013-11-24 19:10:46 +0200472 iwl_trans_stop_device(trans);
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200473 mutex_unlock(&mvm->mutex);
474 /* returns 0 if successful, 1 if success but in rfkill */
475 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
476 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
477 goto out_free;
478 }
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200479 }
Johannes Berg8ca151b2013-01-24 14:25:36 +0100480
481 scan_size = sizeof(struct iwl_scan_cmd) +
482 mvm->fw->ucode_capa.max_probe_length +
483 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel));
484 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
485 if (!mvm->scan_cmd)
486 goto out_free;
487
488 err = iwl_mvm_mac_setup_register(mvm);
489 if (err)
490 goto out_free;
491
492 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
493 if (err)
494 goto out_unregister;
495
Alexander Bondare8e626a2013-10-16 00:21:34 +0200496 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT)
Alexander Bondare811ada2013-03-10 15:29:44 +0200497 mvm->pm_ops = &pm_mac_ops;
498 else
499 mvm->pm_ops = &pm_legacy_ops;
500
Matti Gottlieb3848ab62013-07-30 15:29:37 +0300501 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
502
Johannes Berg8ca151b2013-01-24 14:25:36 +0100503 return op_mode;
504
505 out_unregister:
506 ieee80211_unregister_hw(mvm->hw);
Eliad Peller91b0d112014-01-05 12:41:12 +0200507 iwl_mvm_leds_exit(mvm);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100508 out_free:
509 iwl_phy_db_free(mvm->phy_db);
510 kfree(mvm->scan_cmd);
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200511 if (!iwlwifi_mod_params.nvm_file)
Arik Nemtsova4082842013-11-24 19:10:46 +0200512 iwl_trans_op_mode_leave(trans);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100513 ieee80211_free_hw(mvm->hw);
514 return NULL;
515}
516
517static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
518{
519 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
520 int i;
521
522 iwl_mvm_leds_exit(mvm);
523
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300524 iwl_mvm_tt_exit(mvm);
525
Johannes Berg8ca151b2013-01-24 14:25:36 +0100526 ieee80211_unregister_hw(mvm->hw);
527
528 kfree(mvm->scan_cmd);
Eliad Pellere59647e2013-11-28 14:08:50 +0200529 kfree(mvm->mcast_filter_cmd);
530 mvm->mcast_filter_cmd = NULL;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100531
Johannes Bergafc66bb2013-05-03 11:44:16 +0200532#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
533 kfree(mvm->d3_resume_sram);
534#endif
535
Arik Nemtsova4082842013-11-24 19:10:46 +0200536 iwl_trans_op_mode_leave(mvm->trans);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100537
538 iwl_phy_db_free(mvm->phy_db);
539 mvm->phy_db = NULL;
540
Johannes Berg8ca151b2013-01-24 14:25:36 +0100541 iwl_free_nvm_data(mvm->nvm_data);
Eran Hararyae2b21b2014-01-09 08:08:24 +0200542 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100543 kfree(mvm->nvm_sections[i].data);
544
545 ieee80211_free_hw(mvm->hw);
546}
547
548struct iwl_async_handler_entry {
549 struct list_head list;
550 struct iwl_rx_cmd_buffer rxb;
551 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
552 struct iwl_device_cmd *cmd);
553};
554
555void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
556{
557 struct iwl_async_handler_entry *entry, *tmp;
558
559 spin_lock_bh(&mvm->async_handlers_lock);
560 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
561 iwl_free_rxb(&entry->rxb);
562 list_del(&entry->list);
563 kfree(entry);
564 }
565 spin_unlock_bh(&mvm->async_handlers_lock);
566}
567
568static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
569{
570 struct iwl_mvm *mvm =
571 container_of(wk, struct iwl_mvm, async_handlers_wk);
572 struct iwl_async_handler_entry *entry, *tmp;
573 struct list_head local_list;
574
575 INIT_LIST_HEAD(&local_list);
576
577 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
578 mutex_lock(&mvm->mutex);
579
580 /*
581 * Sync with Rx path with a lock. Remove all the entries from this list,
582 * add them to a local one (lock free), and then handle them.
583 */
584 spin_lock_bh(&mvm->async_handlers_lock);
585 list_splice_init(&mvm->async_handlers_list, &local_list);
586 spin_unlock_bh(&mvm->async_handlers_lock);
587
588 list_for_each_entry_safe(entry, tmp, &local_list, list) {
589 if (entry->fn(mvm, &entry->rxb, NULL))
590 IWL_WARN(mvm,
591 "returned value from ASYNC handlers are ignored\n");
592 iwl_free_rxb(&entry->rxb);
593 list_del(&entry->list);
594 kfree(entry);
595 }
596 mutex_unlock(&mvm->mutex);
597}
598
599static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
600 struct iwl_rx_cmd_buffer *rxb,
601 struct iwl_device_cmd *cmd)
602{
603 struct iwl_rx_packet *pkt = rxb_addr(rxb);
604 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
605 u8 i;
606
607 /*
608 * Do the notification wait before RX handlers so
609 * even if the RX handler consumes the RXB we have
610 * access to it in the notification wait entry.
611 */
612 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
613
614 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
615 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200616 struct iwl_async_handler_entry *entry;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100617
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200618 if (rx_h->cmd_id != pkt->hdr.cmd)
619 continue;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100620
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200621 if (!rx_h->async)
622 return rx_h->fn(mvm, rxb, cmd);
623
624 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
625 /* we can't do much... */
626 if (!entry)
627 return 0;
628
629 entry->rxb._page = rxb_steal_page(rxb);
630 entry->rxb._offset = rxb->_offset;
631 entry->rxb._rx_page_order = rxb->_rx_page_order;
632 entry->fn = rx_h->fn;
633 spin_lock(&mvm->async_handlers_lock);
634 list_add_tail(&entry->list, &mvm->async_handlers_list);
635 spin_unlock(&mvm->async_handlers_lock);
636 schedule_work(&mvm->async_handlers_wk);
637 break;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100638 }
639
640 return 0;
641}
642
643static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
644{
645 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
646 int mq = mvm->queue_to_mac80211[queue];
647
648 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
649 return;
650
651 if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) {
652 IWL_DEBUG_TX_QUEUES(mvm,
653 "queue %d (mac80211 %d) already stopped\n",
654 queue, mq);
655 return;
656 }
657
658 set_bit(mq, &mvm->transport_queue_stop);
659 ieee80211_stop_queue(mvm->hw, mq);
660}
661
662static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
663{
664 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
665 int mq = mvm->queue_to_mac80211[queue];
666
667 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
668 return;
669
670 if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) {
671 IWL_DEBUG_TX_QUEUES(mvm,
672 "queue %d (mac80211 %d) already awake\n",
673 queue, mq);
674 return;
675 }
676
677 clear_bit(mq, &mvm->transport_queue_stop);
678
679 ieee80211_wake_queue(mvm->hw, mq);
680}
681
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300682void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
683{
684 if (state)
685 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
686 else
687 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
688
689 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
690}
691
Johannes Berg8ca151b2013-01-24 14:25:36 +0100692static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
693{
694 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
695
696 if (state)
697 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
698 else
699 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
700
Emmanuel Grumbachaaa4e742013-12-19 22:20:58 +0200701 if (state && mvm->cur_ucode != IWL_UCODE_INIT)
702 iwl_trans_stop_device(mvm->trans);
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300703 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
Johannes Berg8ca151b2013-01-24 14:25:36 +0100704}
705
706static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
707{
708 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
709 struct ieee80211_tx_info *info;
710
711 info = IEEE80211_SKB_CB(skb);
712 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
713 ieee80211_free_txskb(mvm->hw, skb);
714}
715
Johannes Bergac1ed412013-07-04 15:25:25 +0200716struct iwl_mvm_reprobe {
717 struct device *dev;
718 struct work_struct work;
719};
720
721static void iwl_mvm_reprobe_wk(struct work_struct *wk)
722{
723 struct iwl_mvm_reprobe *reprobe;
724
725 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
726 if (device_reprobe(reprobe->dev))
727 dev_err(reprobe->dev, "reprobe failed!\n");
728 kfree(reprobe);
729 module_put(THIS_MODULE);
730}
731
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200732static void iwl_mvm_nic_restart(struct iwl_mvm *mvm)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100733{
Johannes Berg8ca151b2013-01-24 14:25:36 +0100734 iwl_abort_notification_waits(&mvm->notif_wait);
735
736 /*
David Spinadel992f81f2014-01-09 14:22:55 +0200737 * This is a bit racy, but worst case we tell mac80211 about
738 * a stopped/aborted scan when that was already done which
739 * is not a problem. It is necessary to abort any os scan
740 * here because mac80211 requires having the scan cleared
741 * before restarting.
742 * We'll reset the scan_status to NONE in restart cleanup in
743 * the next start() call from mac80211. If restart isn't called
744 * (no fw restart) scan status will stay busy.
745 */
746 switch (mvm->scan_status) {
747 case IWL_MVM_SCAN_NONE:
748 break;
749 case IWL_MVM_SCAN_OS:
750 ieee80211_scan_completed(mvm->hw, true);
751 break;
752 case IWL_MVM_SCAN_SCHED:
753 /* Sched scan will be restarted by mac80211 in restart_hw. */
754 if (!mvm->restart_fw)
755 ieee80211_sched_scan_stopped(mvm->hw);
756 break;
757 }
758
759 /*
Johannes Berg8ca151b2013-01-24 14:25:36 +0100760 * If we're restarting already, don't cycle restarts.
761 * If INIT fw asserted, it will likely fail again.
762 * If WoWLAN fw asserted, don't restart either, mac80211
763 * can't recover this since we're already half suspended.
764 */
765 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
Johannes Bergac1ed412013-07-04 15:25:25 +0200766 struct iwl_mvm_reprobe *reprobe;
767
768 IWL_ERR(mvm,
769 "Firmware error during reconfiguration - reprobe!\n");
770
771 /*
772 * get a module reference to avoid doing this while unloading
773 * anyway and to avoid scheduling a work with code that's
774 * being removed.
775 */
776 if (!try_module_get(THIS_MODULE)) {
777 IWL_ERR(mvm, "Module is being unloaded - abort\n");
778 return;
779 }
780
781 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
782 if (!reprobe) {
783 module_put(THIS_MODULE);
784 return;
785 }
786 reprobe->dev = mvm->trans->dev;
787 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
788 schedule_work(&reprobe->work);
Eran Harary291aa7c2013-07-03 11:00:06 +0300789 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && mvm->restart_fw) {
Eran Harary291aa7c2013-07-03 11:00:06 +0300790 if (mvm->restart_fw > 0)
791 mvm->restart_fw--;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100792 ieee80211_restart_hw(mvm->hw);
793 }
794}
795
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200796static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
797{
798 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
799
800 iwl_mvm_dump_nic_error_log(mvm);
Eran Harary291aa7c2013-07-03 11:00:06 +0300801 if (!mvm->restart_fw)
Matti Gottlieb0c393d42013-07-04 14:47:30 +0300802 iwl_mvm_dump_sram(mvm);
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200803
804 iwl_mvm_nic_restart(mvm);
805}
806
Johannes Berg8ca151b2013-01-24 14:25:36 +0100807static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
808{
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200809 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
810
Johannes Berg8ca151b2013-01-24 14:25:36 +0100811 WARN_ON(1);
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200812 iwl_mvm_nic_restart(mvm);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100813}
814
815static const struct iwl_op_mode_ops iwl_mvm_ops = {
816 .start = iwl_op_mode_mvm_start,
817 .stop = iwl_op_mode_mvm_stop,
818 .rx = iwl_mvm_rx_dispatch,
819 .queue_full = iwl_mvm_stop_sw_queue,
820 .queue_not_full = iwl_mvm_wake_sw_queue,
821 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
822 .free_skb = iwl_mvm_free_skb,
823 .nic_error = iwl_mvm_nic_error,
824 .cmd_queue_full = iwl_mvm_cmd_queue_full,
825 .nic_config = iwl_mvm_nic_config,
826};