blob: 2e9af9f557969a18c7716b5c582d3083a934e7c2 [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),
David Spinadel35a000b2013-08-28 09:29:43 +0300227 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
228 iwl_mvm_rx_scan_offload_complete_notif, false),
229 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_sched_scan_results,
230 false),
Emmanuel Grumbach497b49d2013-06-02 20:54:48 +0300231
Johannes Berg8ca151b2013-01-24 14:25:36 +0100232 RX_HANDLER(RADIO_VERSION_NOTIFICATION, iwl_mvm_rx_radio_ver, false),
233 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif, false),
234
Hila Gonend64048e2013-03-13 18:00:03 +0200235 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
236 false),
237
Johannes Berg8ca151b2013-01-24 14:25:36 +0100238 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false),
Alexander Bondar175a70b2013-04-14 20:59:37 +0300239 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
240 iwl_mvm_power_uapsd_misbehaving_ap_notif, false),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100241};
242#undef RX_HANDLER
243#define CMD(x) [x] = #x
244
245static const char *iwl_mvm_cmd_strings[REPLY_MAX] = {
246 CMD(MVM_ALIVE),
247 CMD(REPLY_ERROR),
248 CMD(INIT_COMPLETE_NOTIF),
249 CMD(PHY_CONTEXT_CMD),
250 CMD(MGMT_MCAST_KEY),
251 CMD(TX_CMD),
252 CMD(TXPATH_FLUSH),
253 CMD(MAC_CONTEXT_CMD),
254 CMD(TIME_EVENT_CMD),
255 CMD(TIME_EVENT_NOTIFICATION),
256 CMD(BINDING_CONTEXT_CMD),
257 CMD(TIME_QUOTA_CMD),
Johannes Berg4ac6cb52013-08-08 09:30:13 +0200258 CMD(NON_QOS_TX_COUNTER_CMD),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100259 CMD(RADIO_VERSION_NOTIFICATION),
260 CMD(SCAN_REQUEST_CMD),
261 CMD(SCAN_ABORT_CMD),
262 CMD(SCAN_START_NOTIFICATION),
263 CMD(SCAN_RESULTS_NOTIFICATION),
264 CMD(SCAN_COMPLETE_NOTIFICATION),
265 CMD(NVM_ACCESS_CMD),
266 CMD(PHY_CONFIGURATION_CMD),
267 CMD(CALIB_RES_NOTIF_PHY_DB),
268 CMD(SET_CALIB_DEFAULT_CMD),
269 CMD(CALIBRATION_COMPLETE_NOTIFICATION),
Max Stepanov5a258aa2013-04-07 09:11:21 +0300270 CMD(ADD_STA_KEY),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100271 CMD(ADD_STA),
272 CMD(REMOVE_STA),
273 CMD(LQ_CMD),
274 CMD(SCAN_OFFLOAD_CONFIG_CMD),
David Spinadel35a000b2013-08-28 09:29:43 +0300275 CMD(MATCH_FOUND_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100276 CMD(SCAN_OFFLOAD_REQUEST_CMD),
277 CMD(SCAN_OFFLOAD_ABORT_CMD),
278 CMD(SCAN_OFFLOAD_COMPLETE),
279 CMD(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
280 CMD(POWER_TABLE_CMD),
281 CMD(WEP_KEY),
282 CMD(REPLY_RX_PHY_CMD),
283 CMD(REPLY_RX_MPDU_CMD),
Ilan Peer571765c2013-03-05 15:26:03 +0200284 CMD(BEACON_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100285 CMD(BEACON_TEMPLATE_CMD),
286 CMD(STATISTICS_NOTIFICATION),
Matti Gottlieb88f2fd72013-07-09 15:25:46 +0300287 CMD(REDUCE_TX_POWER_CMD),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100288 CMD(TX_ANT_CONFIGURATION_CMD),
289 CMD(D3_CONFIG_CMD),
290 CMD(PROT_OFFLOAD_CONFIG_CMD),
291 CMD(OFFLOADS_QUERY_CMD),
292 CMD(REMOTE_WAKE_CONFIG_CMD),
293 CMD(WOWLAN_PATTERNS),
294 CMD(WOWLAN_CONFIGURATION),
295 CMD(WOWLAN_TSC_RSC_PARAM),
296 CMD(WOWLAN_TKIP_PARAM),
297 CMD(WOWLAN_KEK_KCK_MATERIAL),
298 CMD(WOWLAN_GET_STATUSES),
299 CMD(WOWLAN_TX_POWER_PER_DB),
300 CMD(NET_DETECT_CONFIG_CMD),
301 CMD(NET_DETECT_PROFILES_QUERY_CMD),
302 CMD(NET_DETECT_PROFILES_CMD),
303 CMD(NET_DETECT_HOTSPOTS_CMD),
304 CMD(NET_DETECT_HOTSPOTS_QUERY_CMD),
Emmanuel Grumbach3b4612f2013-03-03 09:14:51 +0200305 CMD(CARD_STATE_NOTIFICATION),
Hila Gonend64048e2013-03-13 18:00:03 +0200306 CMD(MISSED_BEACONS_NOTIFICATION),
Emmanuel Grumbachfb3ceb82013-01-14 15:04:01 +0200307 CMD(BT_COEX_PRIO_TABLE),
308 CMD(BT_COEX_PROT_ENV),
309 CMD(BT_PROFILE_NOTIFICATION),
310 CMD(BT_CONFIG),
Emmanuel Grumbach51b6b9e2013-05-02 15:01:24 +0300311 CMD(MCAST_FILTER_CMD),
Hila Gonen7df15b12012-12-12 11:16:19 +0200312 CMD(REPLY_BEACON_FILTERING_CMD),
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300313 CMD(REPLY_THERMAL_MNG_BACKOFF),
Alexander Bondare811ada2013-03-10 15:29:44 +0200314 CMD(MAC_PM_POWER_TABLE),
Emmanuel Grumbachdac94da2013-06-18 07:35:27 +0300315 CMD(BT_COEX_CI),
Alexander Bondar175a70b2013-04-14 20:59:37 +0300316 CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
Johannes Berg8ca151b2013-01-24 14:25:36 +0100317};
318#undef CMD
319
320/* this forward declaration can avoid to export the function */
321static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
322
323static struct iwl_op_mode *
324iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
325 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
326{
327 struct ieee80211_hw *hw;
328 struct iwl_op_mode *op_mode;
329 struct iwl_mvm *mvm;
330 struct iwl_trans_config trans_cfg = {};
331 static const u8 no_reclaim_cmds[] = {
332 TX_CMD,
333 };
334 int err, scan_size;
335
Johannes Berg8ca151b2013-01-24 14:25:36 +0100336 /********************************
337 * 1. Allocating and configuring HW data
338 ********************************/
339 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
340 sizeof(struct iwl_mvm),
341 &iwl_mvm_hw_ops);
342 if (!hw)
343 return NULL;
344
345 op_mode = hw->priv;
346 op_mode->ops = &iwl_mvm_ops;
347 op_mode->trans = trans;
348
349 mvm = IWL_OP_MODE_GET_MVM(op_mode);
350 mvm->dev = trans->dev;
351 mvm->trans = trans;
352 mvm->cfg = cfg;
353 mvm->fw = fw;
354 mvm->hw = hw;
355
Eran Harary291aa7c2013-07-03 11:00:06 +0300356 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
357
Eytan Lifshitz19e737c2013-09-09 13:30:15 +0200358 mvm->aux_queue = 15;
359 mvm->first_agg_queue = 16;
360 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
361 if (mvm->cfg->base_params->num_of_queues == 16) {
362 mvm->aux_queue = 11;
363 mvm->first_agg_queue = 12;
364 }
Lilach Edelstein1f3b0ff2013-10-06 13:03:32 +0200365 mvm->sf_state = SF_UNINIT;
Eytan Lifshitz19e737c2013-09-09 13:30:15 +0200366
Johannes Berg8ca151b2013-01-24 14:25:36 +0100367 mutex_init(&mvm->mutex);
368 spin_lock_init(&mvm->async_handlers_lock);
369 INIT_LIST_HEAD(&mvm->time_event_list);
370 INIT_LIST_HEAD(&mvm->async_handlers_list);
371 spin_lock_init(&mvm->time_event_lock);
372
373 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
374 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
375 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
376
377 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
378
379 /*
380 * Populate the state variables that the transport layer needs
381 * to know about.
382 */
383 trans_cfg.op_mode = op_mode;
384 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
385 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
386 trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
387
Emmanuel Grumbach25b9ea52013-03-06 11:53:38 +0200388 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100389 trans_cfg.bc_table_dword = true;
390
391 if (!iwlwifi_mod_params.wd_disable)
392 trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout;
393 else
394 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
395
396 trans_cfg.command_names = iwl_mvm_cmd_strings;
397
398 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
399 trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO;
400
401 snprintf(mvm->hw->wiphy->fw_version,
402 sizeof(mvm->hw->wiphy->fw_version),
403 "%s", fw->fw_version);
404
405 /* Configure transport layer */
406 iwl_trans_configure(mvm->trans, &trans_cfg);
407
408 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
409 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
410
411 /* set up notification wait support */
412 iwl_notification_wait_init(&mvm->notif_wait);
413
414 /* Init phy db */
415 mvm->phy_db = iwl_phy_db_init(trans);
416 if (!mvm->phy_db) {
417 IWL_ERR(mvm, "Cannot init phy_db\n");
418 goto out_free;
419 }
420
421 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
422 mvm->cfg->name, mvm->trans->hw_rev);
423
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300424 iwl_mvm_tt_initialize(mvm);
425
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200426 /*
427 * If the NVM exists in an external file,
428 * there is no need to unnecessarily power up the NIC at driver load
429 */
430 if (iwlwifi_mod_params.nvm_file) {
431 iwl_nvm_init(mvm);
432 } else {
433 err = iwl_trans_start_hw(mvm->trans);
434 if (err)
435 goto out_free;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100436
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200437 mutex_lock(&mvm->mutex);
438 err = iwl_run_init_mvm_ucode(mvm, true);
439 mutex_unlock(&mvm->mutex);
440 /* returns 0 if successful, 1 if success but in rfkill */
441 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
442 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
443 goto out_free;
444 }
445
446 /* Stop the hw after the ALIVE and NVM has been read */
447 if (!iwlmvm_mod_params.init_dbg)
448 iwl_trans_stop_hw(mvm->trans, false);
449 }
Johannes Berg8ca151b2013-01-24 14:25:36 +0100450
451 scan_size = sizeof(struct iwl_scan_cmd) +
452 mvm->fw->ucode_capa.max_probe_length +
453 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel));
454 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
455 if (!mvm->scan_cmd)
456 goto out_free;
457
458 err = iwl_mvm_mac_setup_register(mvm);
459 if (err)
460 goto out_free;
461
462 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
463 if (err)
464 goto out_unregister;
465
Alexander Bondare8e626a2013-10-16 00:21:34 +0200466 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT)
Alexander Bondare811ada2013-03-10 15:29:44 +0200467 mvm->pm_ops = &pm_mac_ops;
468 else
469 mvm->pm_ops = &pm_legacy_ops;
470
Matti Gottlieb3848ab62013-07-30 15:29:37 +0300471 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
472
Johannes Berg8ca151b2013-01-24 14:25:36 +0100473 return op_mode;
474
475 out_unregister:
476 ieee80211_unregister_hw(mvm->hw);
477 out_free:
478 iwl_phy_db_free(mvm->phy_db);
479 kfree(mvm->scan_cmd);
Eytan Lifshitz81a67e32013-09-11 12:39:18 +0200480 if (!iwlwifi_mod_params.nvm_file)
481 iwl_trans_stop_hw(trans, true);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100482 ieee80211_free_hw(mvm->hw);
483 return NULL;
484}
485
486static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
487{
488 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
489 int i;
490
491 iwl_mvm_leds_exit(mvm);
492
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300493 iwl_mvm_tt_exit(mvm);
494
Johannes Berg8ca151b2013-01-24 14:25:36 +0100495 ieee80211_unregister_hw(mvm->hw);
496
497 kfree(mvm->scan_cmd);
498
Johannes Bergafc66bb2013-05-03 11:44:16 +0200499#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
500 kfree(mvm->d3_resume_sram);
501#endif
502
Johannes Berg8ca151b2013-01-24 14:25:36 +0100503 iwl_trans_stop_hw(mvm->trans, true);
504
505 iwl_phy_db_free(mvm->phy_db);
506 mvm->phy_db = NULL;
507
Johannes Berg8ca151b2013-01-24 14:25:36 +0100508 iwl_free_nvm_data(mvm->nvm_data);
509 for (i = 0; i < NVM_NUM_OF_SECTIONS; i++)
510 kfree(mvm->nvm_sections[i].data);
511
512 ieee80211_free_hw(mvm->hw);
513}
514
515struct iwl_async_handler_entry {
516 struct list_head list;
517 struct iwl_rx_cmd_buffer rxb;
518 int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
519 struct iwl_device_cmd *cmd);
520};
521
522void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
523{
524 struct iwl_async_handler_entry *entry, *tmp;
525
526 spin_lock_bh(&mvm->async_handlers_lock);
527 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
528 iwl_free_rxb(&entry->rxb);
529 list_del(&entry->list);
530 kfree(entry);
531 }
532 spin_unlock_bh(&mvm->async_handlers_lock);
533}
534
535static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
536{
537 struct iwl_mvm *mvm =
538 container_of(wk, struct iwl_mvm, async_handlers_wk);
539 struct iwl_async_handler_entry *entry, *tmp;
540 struct list_head local_list;
541
542 INIT_LIST_HEAD(&local_list);
543
544 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
545 mutex_lock(&mvm->mutex);
546
547 /*
548 * Sync with Rx path with a lock. Remove all the entries from this list,
549 * add them to a local one (lock free), and then handle them.
550 */
551 spin_lock_bh(&mvm->async_handlers_lock);
552 list_splice_init(&mvm->async_handlers_list, &local_list);
553 spin_unlock_bh(&mvm->async_handlers_lock);
554
555 list_for_each_entry_safe(entry, tmp, &local_list, list) {
556 if (entry->fn(mvm, &entry->rxb, NULL))
557 IWL_WARN(mvm,
558 "returned value from ASYNC handlers are ignored\n");
559 iwl_free_rxb(&entry->rxb);
560 list_del(&entry->list);
561 kfree(entry);
562 }
563 mutex_unlock(&mvm->mutex);
564}
565
566static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode,
567 struct iwl_rx_cmd_buffer *rxb,
568 struct iwl_device_cmd *cmd)
569{
570 struct iwl_rx_packet *pkt = rxb_addr(rxb);
571 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
572 u8 i;
573
574 /*
575 * Do the notification wait before RX handlers so
576 * even if the RX handler consumes the RXB we have
577 * access to it in the notification wait entry.
578 */
579 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
580
581 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
582 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200583 struct iwl_async_handler_entry *entry;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100584
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200585 if (rx_h->cmd_id != pkt->hdr.cmd)
586 continue;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100587
Emmanuel Grumbach36eed562013-02-10 13:25:25 +0200588 if (!rx_h->async)
589 return rx_h->fn(mvm, rxb, cmd);
590
591 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
592 /* we can't do much... */
593 if (!entry)
594 return 0;
595
596 entry->rxb._page = rxb_steal_page(rxb);
597 entry->rxb._offset = rxb->_offset;
598 entry->rxb._rx_page_order = rxb->_rx_page_order;
599 entry->fn = rx_h->fn;
600 spin_lock(&mvm->async_handlers_lock);
601 list_add_tail(&entry->list, &mvm->async_handlers_list);
602 spin_unlock(&mvm->async_handlers_lock);
603 schedule_work(&mvm->async_handlers_wk);
604 break;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100605 }
606
607 return 0;
608}
609
610static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
611{
612 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
613 int mq = mvm->queue_to_mac80211[queue];
614
615 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
616 return;
617
618 if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) {
619 IWL_DEBUG_TX_QUEUES(mvm,
620 "queue %d (mac80211 %d) already stopped\n",
621 queue, mq);
622 return;
623 }
624
625 set_bit(mq, &mvm->transport_queue_stop);
626 ieee80211_stop_queue(mvm->hw, mq);
627}
628
629static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
630{
631 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
632 int mq = mvm->queue_to_mac80211[queue];
633
634 if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
635 return;
636
637 if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) {
638 IWL_DEBUG_TX_QUEUES(mvm,
639 "queue %d (mac80211 %d) already awake\n",
640 queue, mq);
641 return;
642 }
643
644 clear_bit(mq, &mvm->transport_queue_stop);
645
646 ieee80211_wake_queue(mvm->hw, mq);
647}
648
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300649void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
650{
651 if (state)
652 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
653 else
654 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
655
656 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
657}
658
Johannes Berg8ca151b2013-01-24 14:25:36 +0100659static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
660{
661 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
662
663 if (state)
664 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
665 else
666 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
667
Eytan Lifshitz9ee718a2013-05-19 19:14:41 +0300668 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
Johannes Berg8ca151b2013-01-24 14:25:36 +0100669}
670
671static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
672{
673 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
674 struct ieee80211_tx_info *info;
675
676 info = IEEE80211_SKB_CB(skb);
677 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
678 ieee80211_free_txskb(mvm->hw, skb);
679}
680
Johannes Bergac1ed412013-07-04 15:25:25 +0200681struct iwl_mvm_reprobe {
682 struct device *dev;
683 struct work_struct work;
684};
685
686static void iwl_mvm_reprobe_wk(struct work_struct *wk)
687{
688 struct iwl_mvm_reprobe *reprobe;
689
690 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
691 if (device_reprobe(reprobe->dev))
692 dev_err(reprobe->dev, "reprobe failed!\n");
693 kfree(reprobe);
694 module_put(THIS_MODULE);
695}
696
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200697static void iwl_mvm_nic_restart(struct iwl_mvm *mvm)
Johannes Berg8ca151b2013-01-24 14:25:36 +0100698{
Johannes Berg8ca151b2013-01-24 14:25:36 +0100699 iwl_abort_notification_waits(&mvm->notif_wait);
700
701 /*
702 * If we're restarting already, don't cycle restarts.
703 * If INIT fw asserted, it will likely fail again.
704 * If WoWLAN fw asserted, don't restart either, mac80211
705 * can't recover this since we're already half suspended.
706 */
707 if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
Johannes Bergac1ed412013-07-04 15:25:25 +0200708 struct iwl_mvm_reprobe *reprobe;
709
710 IWL_ERR(mvm,
711 "Firmware error during reconfiguration - reprobe!\n");
712
713 /*
714 * get a module reference to avoid doing this while unloading
715 * anyway and to avoid scheduling a work with code that's
716 * being removed.
717 */
718 if (!try_module_get(THIS_MODULE)) {
719 IWL_ERR(mvm, "Module is being unloaded - abort\n");
720 return;
721 }
722
723 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
724 if (!reprobe) {
725 module_put(THIS_MODULE);
726 return;
727 }
728 reprobe->dev = mvm->trans->dev;
729 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
730 schedule_work(&reprobe->work);
Eran Harary291aa7c2013-07-03 11:00:06 +0300731 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && mvm->restart_fw) {
Johannes Berg8ca151b2013-01-24 14:25:36 +0100732 /*
733 * This is a bit racy, but worst case we tell mac80211 about
734 * a stopped/aborted (sched) scan when that was already done
735 * which is not a problem. It is necessary to abort any scan
736 * here because mac80211 requires having the scan cleared
737 * before restarting.
738 * We'll reset the scan_status to NONE in restart cleanup in
739 * the next start() call from mac80211.
740 */
741 switch (mvm->scan_status) {
742 case IWL_MVM_SCAN_NONE:
743 break;
744 case IWL_MVM_SCAN_OS:
745 ieee80211_scan_completed(mvm->hw, true);
746 break;
David Spinadel35a000b2013-08-28 09:29:43 +0300747 case IWL_MVM_SCAN_SCHED:
748 ieee80211_sched_scan_stopped(mvm->hw);
749 break;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100750 }
751
Eran Harary291aa7c2013-07-03 11:00:06 +0300752 if (mvm->restart_fw > 0)
753 mvm->restart_fw--;
Johannes Berg8ca151b2013-01-24 14:25:36 +0100754 ieee80211_restart_hw(mvm->hw);
755 }
756}
757
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200758static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
759{
760 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
761
762 iwl_mvm_dump_nic_error_log(mvm);
Eran Harary291aa7c2013-07-03 11:00:06 +0300763 if (!mvm->restart_fw)
Matti Gottlieb0c393d42013-07-04 14:47:30 +0300764 iwl_mvm_dump_sram(mvm);
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200765
766 iwl_mvm_nic_restart(mvm);
767}
768
Johannes Berg8ca151b2013-01-24 14:25:36 +0100769static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
770{
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200771 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
772
Johannes Berg8ca151b2013-01-24 14:25:36 +0100773 WARN_ON(1);
Emmanuel Grumbach715c9982013-02-28 08:57:31 +0200774 iwl_mvm_nic_restart(mvm);
Johannes Berg8ca151b2013-01-24 14:25:36 +0100775}
776
777static const struct iwl_op_mode_ops iwl_mvm_ops = {
778 .start = iwl_op_mode_mvm_start,
779 .stop = iwl_op_mode_mvm_stop,
780 .rx = iwl_mvm_rx_dispatch,
781 .queue_full = iwl_mvm_stop_sw_queue,
782 .queue_not_full = iwl_mvm_wake_sw_queue,
783 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state,
784 .free_skb = iwl_mvm_free_skb,
785 .nic_error = iwl_mvm_nic_error,
786 .cmd_queue_full = iwl_mvm_cmd_queue_full,
787 .nic_config = iwl_mvm_nic_config,
788};