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1 | /****************************************************************************** | |
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 - 2014 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 | |
25 | * in the file called COPYING. | |
26 | * | |
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 - 2014 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 | ||
90 | MODULE_DESCRIPTION(DRV_DESCRIPTION); | |
91 | MODULE_VERSION(DRV_VERSION); | |
92 | MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR); | |
93 | MODULE_LICENSE("GPL"); | |
94 | ||
95 | static const struct iwl_op_mode_ops iwl_mvm_ops; | |
96 | ||
97 | struct iwl_mvm_mod_params iwlmvm_mod_params = { | |
98 | .power_scheme = IWL_POWER_SCHEME_BPS, | |
99 | /* rest of fields are 0 by default */ | |
100 | }; | |
101 | ||
102 | module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO); | |
103 | MODULE_PARM_DESC(init_dbg, | |
104 | "set to true to debug an ASSERT in INIT fw (default: false"); | |
105 | module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO); | |
106 | MODULE_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 | */ | |
112 | static 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 | } | |
131 | module_init(iwl_mvm_init); | |
132 | ||
133 | static void __exit iwl_mvm_exit(void) | |
134 | { | |
135 | iwl_opmode_deregister("iwlmvm"); | |
136 | iwl_mvm_rate_control_unregister(); | |
137 | } | |
138 | module_exit(iwl_mvm_exit); | |
139 | ||
140 | static 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 | ||
146 | 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; | |
152 | ||
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; | |
169 | ||
170 | 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); | |
179 | ||
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 | 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); | |
192 | } | |
193 | ||
194 | struct 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 | */ | |
214 | static 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), | |
219 | ||
220 | RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif, true), | |
221 | RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif, false), | |
222 | RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics, true), | |
223 | ||
224 | RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif, false), | |
225 | ||
226 | RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, false), | |
227 | ||
228 | RX_HANDLER(SCAN_REQUEST_CMD, iwl_mvm_rx_scan_response, false), | |
229 | RX_HANDLER(SCAN_COMPLETE_NOTIFICATION, iwl_mvm_rx_scan_complete, false), | |
230 | 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), | |
234 | ||
235 | 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 | ||
238 | RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif, | |
239 | false), | |
240 | ||
241 | RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, false), | |
242 | RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION, | |
243 | iwl_mvm_power_uapsd_misbehaving_ap_notif, false), | |
244 | }; | |
245 | #undef RX_HANDLER | |
246 | #define CMD(x) [x] = #x | |
247 | ||
248 | static 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), | |
261 | CMD(NON_QOS_TX_COUNTER_CMD), | |
262 | 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), | |
273 | CMD(ADD_STA_KEY), | |
274 | CMD(ADD_STA), | |
275 | CMD(REMOVE_STA), | |
276 | CMD(LQ_CMD), | |
277 | CMD(SCAN_OFFLOAD_CONFIG_CMD), | |
278 | CMD(MATCH_FOUND_NOTIFICATION), | |
279 | 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), | |
287 | CMD(BEACON_NOTIFICATION), | |
288 | CMD(BEACON_TEMPLATE_CMD), | |
289 | CMD(STATISTICS_NOTIFICATION), | |
290 | CMD(EOSP_NOTIFICATION), | |
291 | CMD(REDUCE_TX_POWER_CMD), | |
292 | CMD(TX_ANT_CONFIGURATION_CMD), | |
293 | CMD(D3_CONFIG_CMD), | |
294 | CMD(D0I3_END_CMD), | |
295 | CMD(PROT_OFFLOAD_CONFIG_CMD), | |
296 | CMD(OFFLOADS_QUERY_CMD), | |
297 | CMD(REMOTE_WAKE_CONFIG_CMD), | |
298 | CMD(WOWLAN_PATTERNS), | |
299 | CMD(WOWLAN_CONFIGURATION), | |
300 | CMD(WOWLAN_TSC_RSC_PARAM), | |
301 | CMD(WOWLAN_TKIP_PARAM), | |
302 | CMD(WOWLAN_KEK_KCK_MATERIAL), | |
303 | CMD(WOWLAN_GET_STATUSES), | |
304 | CMD(WOWLAN_TX_POWER_PER_DB), | |
305 | CMD(NET_DETECT_CONFIG_CMD), | |
306 | CMD(NET_DETECT_PROFILES_QUERY_CMD), | |
307 | CMD(NET_DETECT_PROFILES_CMD), | |
308 | CMD(NET_DETECT_HOTSPOTS_CMD), | |
309 | CMD(NET_DETECT_HOTSPOTS_QUERY_CMD), | |
310 | CMD(CARD_STATE_NOTIFICATION), | |
311 | CMD(MISSED_BEACONS_NOTIFICATION), | |
312 | CMD(BT_COEX_PRIO_TABLE), | |
313 | CMD(BT_COEX_PROT_ENV), | |
314 | CMD(BT_PROFILE_NOTIFICATION), | |
315 | CMD(BT_CONFIG), | |
316 | CMD(MCAST_FILTER_CMD), | |
317 | CMD(BCAST_FILTER_CMD), | |
318 | CMD(REPLY_SF_CFG_CMD), | |
319 | CMD(REPLY_BEACON_FILTERING_CMD), | |
320 | CMD(REPLY_THERMAL_MNG_BACKOFF), | |
321 | CMD(MAC_PM_POWER_TABLE), | |
322 | CMD(BT_COEX_CI), | |
323 | CMD(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION), | |
324 | }; | |
325 | #undef CMD | |
326 | ||
327 | /* this forward declaration can avoid to export the function */ | |
328 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk); | |
329 | ||
330 | static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg) | |
331 | { | |
332 | const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs; | |
333 | ||
334 | if (!pwr_tx_backoff) | |
335 | return 0; | |
336 | ||
337 | while (pwr_tx_backoff->pwr) { | |
338 | if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr) | |
339 | return pwr_tx_backoff->backoff; | |
340 | ||
341 | pwr_tx_backoff++; | |
342 | } | |
343 | ||
344 | return 0; | |
345 | } | |
346 | ||
347 | static struct iwl_op_mode * | |
348 | iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg, | |
349 | const struct iwl_fw *fw, struct dentry *dbgfs_dir) | |
350 | { | |
351 | struct ieee80211_hw *hw; | |
352 | struct iwl_op_mode *op_mode; | |
353 | struct iwl_mvm *mvm; | |
354 | struct iwl_trans_config trans_cfg = {}; | |
355 | static const u8 no_reclaim_cmds[] = { | |
356 | TX_CMD, | |
357 | }; | |
358 | int err, scan_size; | |
359 | u32 min_backoff; | |
360 | ||
361 | /* | |
362 | * We use IWL_MVM_STATION_COUNT to check the validity of the station | |
363 | * index all over the driver - check that its value corresponds to the | |
364 | * array size. | |
365 | */ | |
366 | BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT); | |
367 | ||
368 | /******************************** | |
369 | * 1. Allocating and configuring HW data | |
370 | ********************************/ | |
371 | hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) + | |
372 | sizeof(struct iwl_mvm), | |
373 | &iwl_mvm_hw_ops); | |
374 | if (!hw) | |
375 | return NULL; | |
376 | ||
377 | op_mode = hw->priv; | |
378 | op_mode->ops = &iwl_mvm_ops; | |
379 | ||
380 | mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
381 | mvm->dev = trans->dev; | |
382 | mvm->trans = trans; | |
383 | mvm->cfg = cfg; | |
384 | mvm->fw = fw; | |
385 | mvm->hw = hw; | |
386 | ||
387 | mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0; | |
388 | ||
389 | mvm->aux_queue = 15; | |
390 | mvm->first_agg_queue = 16; | |
391 | mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1; | |
392 | if (mvm->cfg->base_params->num_of_queues == 16) { | |
393 | mvm->aux_queue = 11; | |
394 | mvm->first_agg_queue = 12; | |
395 | } | |
396 | mvm->sf_state = SF_UNINIT; | |
397 | ||
398 | mutex_init(&mvm->mutex); | |
399 | spin_lock_init(&mvm->async_handlers_lock); | |
400 | INIT_LIST_HEAD(&mvm->time_event_list); | |
401 | INIT_LIST_HEAD(&mvm->async_handlers_list); | |
402 | spin_lock_init(&mvm->time_event_lock); | |
403 | ||
404 | INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk); | |
405 | INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk); | |
406 | INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk); | |
407 | ||
408 | SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev); | |
409 | ||
410 | /* | |
411 | * Populate the state variables that the transport layer needs | |
412 | * to know about. | |
413 | */ | |
414 | trans_cfg.op_mode = op_mode; | |
415 | trans_cfg.no_reclaim_cmds = no_reclaim_cmds; | |
416 | trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds); | |
417 | trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K; | |
418 | ||
419 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE) | |
420 | trans_cfg.bc_table_dword = true; | |
421 | ||
422 | if (!iwlwifi_mod_params.wd_disable) | |
423 | trans_cfg.queue_watchdog_timeout = cfg->base_params->wd_timeout; | |
424 | else | |
425 | trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED; | |
426 | ||
427 | trans_cfg.command_names = iwl_mvm_cmd_strings; | |
428 | ||
429 | trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE; | |
430 | trans_cfg.cmd_fifo = IWL_MVM_CMD_FIFO; | |
431 | ||
432 | snprintf(mvm->hw->wiphy->fw_version, | |
433 | sizeof(mvm->hw->wiphy->fw_version), | |
434 | "%s", fw->fw_version); | |
435 | ||
436 | /* Configure transport layer */ | |
437 | iwl_trans_configure(mvm->trans, &trans_cfg); | |
438 | ||
439 | trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD; | |
440 | trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start); | |
441 | ||
442 | /* set up notification wait support */ | |
443 | iwl_notification_wait_init(&mvm->notif_wait); | |
444 | ||
445 | /* Init phy db */ | |
446 | mvm->phy_db = iwl_phy_db_init(trans); | |
447 | if (!mvm->phy_db) { | |
448 | IWL_ERR(mvm, "Cannot init phy_db\n"); | |
449 | goto out_free; | |
450 | } | |
451 | ||
452 | IWL_INFO(mvm, "Detected %s, REV=0x%X\n", | |
453 | mvm->cfg->name, mvm->trans->hw_rev); | |
454 | ||
455 | min_backoff = calc_min_backoff(trans, cfg); | |
456 | iwl_mvm_tt_initialize(mvm, min_backoff); | |
457 | ||
458 | /* | |
459 | * If the NVM exists in an external file, | |
460 | * there is no need to unnecessarily power up the NIC at driver load | |
461 | */ | |
462 | if (iwlwifi_mod_params.nvm_file) { | |
463 | err = iwl_nvm_init(mvm); | |
464 | if (err) | |
465 | goto out_free; | |
466 | } else { | |
467 | err = iwl_trans_start_hw(mvm->trans); | |
468 | if (err) | |
469 | goto out_free; | |
470 | ||
471 | mutex_lock(&mvm->mutex); | |
472 | err = iwl_run_init_mvm_ucode(mvm, true); | |
473 | iwl_trans_stop_device(trans); | |
474 | mutex_unlock(&mvm->mutex); | |
475 | /* returns 0 if successful, 1 if success but in rfkill */ | |
476 | if (err < 0 && !iwlmvm_mod_params.init_dbg) { | |
477 | IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err); | |
478 | goto out_free; | |
479 | } | |
480 | } | |
481 | ||
482 | scan_size = sizeof(struct iwl_scan_cmd) + | |
483 | mvm->fw->ucode_capa.max_probe_length + | |
484 | (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel)); | |
485 | mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL); | |
486 | if (!mvm->scan_cmd) | |
487 | goto out_free; | |
488 | ||
489 | err = iwl_mvm_mac_setup_register(mvm); | |
490 | if (err) | |
491 | goto out_free; | |
492 | ||
493 | err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir); | |
494 | if (err) | |
495 | goto out_unregister; | |
496 | ||
497 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PM_CMD_SUPPORT) | |
498 | mvm->pm_ops = &pm_mac_ops; | |
499 | else | |
500 | mvm->pm_ops = &pm_legacy_ops; | |
501 | ||
502 | memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx)); | |
503 | ||
504 | /* rpm starts with a taken ref. only set the appropriate bit here. */ | |
505 | set_bit(IWL_MVM_REF_UCODE_DOWN, mvm->ref_bitmap); | |
506 | ||
507 | return op_mode; | |
508 | ||
509 | out_unregister: | |
510 | ieee80211_unregister_hw(mvm->hw); | |
511 | iwl_mvm_leds_exit(mvm); | |
512 | out_free: | |
513 | iwl_phy_db_free(mvm->phy_db); | |
514 | kfree(mvm->scan_cmd); | |
515 | if (!iwlwifi_mod_params.nvm_file) | |
516 | iwl_trans_op_mode_leave(trans); | |
517 | ieee80211_free_hw(mvm->hw); | |
518 | return NULL; | |
519 | } | |
520 | ||
521 | static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode) | |
522 | { | |
523 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
524 | int i; | |
525 | ||
526 | iwl_mvm_leds_exit(mvm); | |
527 | ||
528 | iwl_mvm_tt_exit(mvm); | |
529 | ||
530 | ieee80211_unregister_hw(mvm->hw); | |
531 | ||
532 | kfree(mvm->scan_cmd); | |
533 | kfree(mvm->mcast_filter_cmd); | |
534 | mvm->mcast_filter_cmd = NULL; | |
535 | ||
536 | #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS) | |
537 | kfree(mvm->d3_resume_sram); | |
538 | #endif | |
539 | ||
540 | iwl_trans_op_mode_leave(mvm->trans); | |
541 | ||
542 | iwl_phy_db_free(mvm->phy_db); | |
543 | mvm->phy_db = NULL; | |
544 | ||
545 | iwl_free_nvm_data(mvm->nvm_data); | |
546 | for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++) | |
547 | kfree(mvm->nvm_sections[i].data); | |
548 | ||
549 | ieee80211_free_hw(mvm->hw); | |
550 | } | |
551 | ||
552 | struct iwl_async_handler_entry { | |
553 | struct list_head list; | |
554 | struct iwl_rx_cmd_buffer rxb; | |
555 | int (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
556 | struct iwl_device_cmd *cmd); | |
557 | }; | |
558 | ||
559 | void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm) | |
560 | { | |
561 | struct iwl_async_handler_entry *entry, *tmp; | |
562 | ||
563 | spin_lock_bh(&mvm->async_handlers_lock); | |
564 | list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) { | |
565 | iwl_free_rxb(&entry->rxb); | |
566 | list_del(&entry->list); | |
567 | kfree(entry); | |
568 | } | |
569 | spin_unlock_bh(&mvm->async_handlers_lock); | |
570 | } | |
571 | ||
572 | static void iwl_mvm_async_handlers_wk(struct work_struct *wk) | |
573 | { | |
574 | struct iwl_mvm *mvm = | |
575 | container_of(wk, struct iwl_mvm, async_handlers_wk); | |
576 | struct iwl_async_handler_entry *entry, *tmp; | |
577 | struct list_head local_list; | |
578 | ||
579 | INIT_LIST_HEAD(&local_list); | |
580 | ||
581 | /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */ | |
582 | mutex_lock(&mvm->mutex); | |
583 | ||
584 | /* | |
585 | * Sync with Rx path with a lock. Remove all the entries from this list, | |
586 | * add them to a local one (lock free), and then handle them. | |
587 | */ | |
588 | spin_lock_bh(&mvm->async_handlers_lock); | |
589 | list_splice_init(&mvm->async_handlers_list, &local_list); | |
590 | spin_unlock_bh(&mvm->async_handlers_lock); | |
591 | ||
592 | list_for_each_entry_safe(entry, tmp, &local_list, list) { | |
593 | if (entry->fn(mvm, &entry->rxb, NULL)) | |
594 | IWL_WARN(mvm, | |
595 | "returned value from ASYNC handlers are ignored\n"); | |
596 | iwl_free_rxb(&entry->rxb); | |
597 | list_del(&entry->list); | |
598 | kfree(entry); | |
599 | } | |
600 | mutex_unlock(&mvm->mutex); | |
601 | } | |
602 | ||
603 | static int iwl_mvm_rx_dispatch(struct iwl_op_mode *op_mode, | |
604 | struct iwl_rx_cmd_buffer *rxb, | |
605 | struct iwl_device_cmd *cmd) | |
606 | { | |
607 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
608 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
609 | u8 i; | |
610 | ||
611 | /* | |
612 | * Do the notification wait before RX handlers so | |
613 | * even if the RX handler consumes the RXB we have | |
614 | * access to it in the notification wait entry. | |
615 | */ | |
616 | iwl_notification_wait_notify(&mvm->notif_wait, pkt); | |
617 | ||
618 | for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) { | |
619 | const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i]; | |
620 | struct iwl_async_handler_entry *entry; | |
621 | ||
622 | if (rx_h->cmd_id != pkt->hdr.cmd) | |
623 | continue; | |
624 | ||
625 | if (!rx_h->async) | |
626 | return rx_h->fn(mvm, rxb, cmd); | |
627 | ||
628 | entry = kzalloc(sizeof(*entry), GFP_ATOMIC); | |
629 | /* we can't do much... */ | |
630 | if (!entry) | |
631 | return 0; | |
632 | ||
633 | entry->rxb._page = rxb_steal_page(rxb); | |
634 | entry->rxb._offset = rxb->_offset; | |
635 | entry->rxb._rx_page_order = rxb->_rx_page_order; | |
636 | entry->fn = rx_h->fn; | |
637 | spin_lock(&mvm->async_handlers_lock); | |
638 | list_add_tail(&entry->list, &mvm->async_handlers_list); | |
639 | spin_unlock(&mvm->async_handlers_lock); | |
640 | schedule_work(&mvm->async_handlers_wk); | |
641 | break; | |
642 | } | |
643 | ||
644 | return 0; | |
645 | } | |
646 | ||
647 | static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int queue) | |
648 | { | |
649 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
650 | int mq = mvm->queue_to_mac80211[queue]; | |
651 | ||
652 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) | |
653 | return; | |
654 | ||
655 | if (atomic_inc_return(&mvm->queue_stop_count[mq]) > 1) { | |
656 | IWL_DEBUG_TX_QUEUES(mvm, | |
657 | "queue %d (mac80211 %d) already stopped\n", | |
658 | queue, mq); | |
659 | return; | |
660 | } | |
661 | ||
662 | set_bit(mq, &mvm->transport_queue_stop); | |
663 | ieee80211_stop_queue(mvm->hw, mq); | |
664 | } | |
665 | ||
666 | static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int queue) | |
667 | { | |
668 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
669 | int mq = mvm->queue_to_mac80211[queue]; | |
670 | ||
671 | if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE)) | |
672 | return; | |
673 | ||
674 | if (atomic_dec_return(&mvm->queue_stop_count[mq]) > 0) { | |
675 | IWL_DEBUG_TX_QUEUES(mvm, | |
676 | "queue %d (mac80211 %d) already awake\n", | |
677 | queue, mq); | |
678 | return; | |
679 | } | |
680 | ||
681 | clear_bit(mq, &mvm->transport_queue_stop); | |
682 | ||
683 | ieee80211_wake_queue(mvm->hw, mq); | |
684 | } | |
685 | ||
686 | void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state) | |
687 | { | |
688 | if (state) | |
689 | set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); | |
690 | else | |
691 | clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status); | |
692 | ||
693 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); | |
694 | } | |
695 | ||
696 | static void iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state) | |
697 | { | |
698 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
699 | ||
700 | if (state) | |
701 | set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); | |
702 | else | |
703 | clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status); | |
704 | ||
705 | if (state && mvm->cur_ucode != IWL_UCODE_INIT) | |
706 | iwl_trans_stop_device(mvm->trans); | |
707 | wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm)); | |
708 | } | |
709 | ||
710 | static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) | |
711 | { | |
712 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
713 | struct ieee80211_tx_info *info; | |
714 | ||
715 | info = IEEE80211_SKB_CB(skb); | |
716 | iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]); | |
717 | ieee80211_free_txskb(mvm->hw, skb); | |
718 | } | |
719 | ||
720 | struct iwl_mvm_reprobe { | |
721 | struct device *dev; | |
722 | struct work_struct work; | |
723 | }; | |
724 | ||
725 | static void iwl_mvm_reprobe_wk(struct work_struct *wk) | |
726 | { | |
727 | struct iwl_mvm_reprobe *reprobe; | |
728 | ||
729 | reprobe = container_of(wk, struct iwl_mvm_reprobe, work); | |
730 | if (device_reprobe(reprobe->dev)) | |
731 | dev_err(reprobe->dev, "reprobe failed!\n"); | |
732 | kfree(reprobe); | |
733 | module_put(THIS_MODULE); | |
734 | } | |
735 | ||
736 | static void iwl_mvm_nic_restart(struct iwl_mvm *mvm) | |
737 | { | |
738 | iwl_abort_notification_waits(&mvm->notif_wait); | |
739 | ||
740 | /* | |
741 | * This is a bit racy, but worst case we tell mac80211 about | |
742 | * a stopped/aborted scan when that was already done which | |
743 | * is not a problem. It is necessary to abort any os scan | |
744 | * here because mac80211 requires having the scan cleared | |
745 | * before restarting. | |
746 | * We'll reset the scan_status to NONE in restart cleanup in | |
747 | * the next start() call from mac80211. If restart isn't called | |
748 | * (no fw restart) scan status will stay busy. | |
749 | */ | |
750 | switch (mvm->scan_status) { | |
751 | case IWL_MVM_SCAN_NONE: | |
752 | break; | |
753 | case IWL_MVM_SCAN_OS: | |
754 | ieee80211_scan_completed(mvm->hw, true); | |
755 | break; | |
756 | case IWL_MVM_SCAN_SCHED: | |
757 | /* Sched scan will be restarted by mac80211 in restart_hw. */ | |
758 | if (!mvm->restart_fw) | |
759 | ieee80211_sched_scan_stopped(mvm->hw); | |
760 | break; | |
761 | } | |
762 | ||
763 | /* | |
764 | * If we're restarting already, don't cycle restarts. | |
765 | * If INIT fw asserted, it will likely fail again. | |
766 | * If WoWLAN fw asserted, don't restart either, mac80211 | |
767 | * can't recover this since we're already half suspended. | |
768 | */ | |
769 | if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { | |
770 | struct iwl_mvm_reprobe *reprobe; | |
771 | ||
772 | IWL_ERR(mvm, | |
773 | "Firmware error during reconfiguration - reprobe!\n"); | |
774 | ||
775 | /* | |
776 | * get a module reference to avoid doing this while unloading | |
777 | * anyway and to avoid scheduling a work with code that's | |
778 | * being removed. | |
779 | */ | |
780 | if (!try_module_get(THIS_MODULE)) { | |
781 | IWL_ERR(mvm, "Module is being unloaded - abort\n"); | |
782 | return; | |
783 | } | |
784 | ||
785 | reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC); | |
786 | if (!reprobe) { | |
787 | module_put(THIS_MODULE); | |
788 | return; | |
789 | } | |
790 | reprobe->dev = mvm->trans->dev; | |
791 | INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk); | |
792 | schedule_work(&reprobe->work); | |
793 | } else if (mvm->cur_ucode == IWL_UCODE_REGULAR && mvm->restart_fw) { | |
794 | /* don't let the transport/FW power down */ | |
795 | iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN); | |
796 | ||
797 | if (mvm->restart_fw > 0) | |
798 | mvm->restart_fw--; | |
799 | ieee80211_restart_hw(mvm->hw); | |
800 | } | |
801 | } | |
802 | ||
803 | static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) | |
804 | { | |
805 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
806 | ||
807 | iwl_mvm_dump_nic_error_log(mvm); | |
808 | if (!mvm->restart_fw) | |
809 | iwl_mvm_dump_sram(mvm); | |
810 | ||
811 | iwl_mvm_nic_restart(mvm); | |
812 | } | |
813 | ||
814 | static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) | |
815 | { | |
816 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
817 | ||
818 | WARN_ON(1); | |
819 | iwl_mvm_nic_restart(mvm); | |
820 | } | |
821 | ||
822 | static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac, | |
823 | struct ieee80211_vif *vif) | |
824 | { | |
825 | struct iwl_mvm *mvm = _data; | |
826 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; | |
827 | ||
828 | IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr); | |
829 | if (vif->type != NL80211_IFTYPE_STATION || | |
830 | !vif->bss_conf.assoc) | |
831 | return; | |
832 | ||
833 | iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags); | |
834 | ||
835 | /* | |
836 | * on init/association, mvm already configures POWER_TABLE_CMD | |
837 | * and REPLY_MCAST_FILTER_CMD, so currently don't | |
838 | * reconfigure them (we might want to use different | |
839 | * params later on, though). | |
840 | */ | |
841 | } | |
842 | ||
843 | static int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode) | |
844 | { | |
845 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
846 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE; | |
847 | int ret; | |
848 | struct iwl_wowlan_config_cmd wowlan_config_cmd = { | |
849 | .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME | | |
850 | IWL_WOWLAN_WAKEUP_BEACON_MISS | | |
851 | IWL_WOWLAN_WAKEUP_LINK_CHANGE | | |
852 | IWL_WOWLAN_WAKEUP_BCN_FILTERING), | |
853 | }; | |
854 | struct iwl_d3_manager_config d3_cfg_cmd = { | |
855 | .min_sleep_time = cpu_to_le32(1000), | |
856 | }; | |
857 | ||
858 | IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n"); | |
859 | ||
860 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
861 | IEEE80211_IFACE_ITER_NORMAL, | |
862 | iwl_mvm_enter_d0i3_iterator, | |
863 | mvm); | |
864 | ||
865 | ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags, | |
866 | sizeof(wowlan_config_cmd), | |
867 | &wowlan_config_cmd); | |
868 | if (ret) | |
869 | return ret; | |
870 | ||
871 | return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, | |
872 | flags | CMD_MAKE_TRANS_IDLE, | |
873 | sizeof(d3_cfg_cmd), &d3_cfg_cmd); | |
874 | } | |
875 | ||
876 | static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac, | |
877 | struct ieee80211_vif *vif) | |
878 | { | |
879 | struct iwl_mvm *mvm = _data; | |
880 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO; | |
881 | ||
882 | IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr); | |
883 | if (vif->type != NL80211_IFTYPE_STATION || | |
884 | !vif->bss_conf.assoc) | |
885 | return; | |
886 | ||
887 | iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags); | |
888 | } | |
889 | ||
890 | static int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode) | |
891 | { | |
892 | struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); | |
893 | u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE | | |
894 | CMD_WAKE_UP_TRANS; | |
895 | int ret; | |
896 | ||
897 | IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n"); | |
898 | ||
899 | ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL); | |
900 | if (ret) | |
901 | return ret; | |
902 | ||
903 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
904 | IEEE80211_IFACE_ITER_NORMAL, | |
905 | iwl_mvm_exit_d0i3_iterator, | |
906 | mvm); | |
907 | return 0; | |
908 | } | |
909 | ||
910 | static const struct iwl_op_mode_ops iwl_mvm_ops = { | |
911 | .start = iwl_op_mode_mvm_start, | |
912 | .stop = iwl_op_mode_mvm_stop, | |
913 | .rx = iwl_mvm_rx_dispatch, | |
914 | .queue_full = iwl_mvm_stop_sw_queue, | |
915 | .queue_not_full = iwl_mvm_wake_sw_queue, | |
916 | .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, | |
917 | .free_skb = iwl_mvm_free_skb, | |
918 | .nic_error = iwl_mvm_nic_error, | |
919 | .cmd_queue_full = iwl_mvm_cmd_queue_full, | |
920 | .nic_config = iwl_mvm_nic_config, | |
921 | .enter_d0i3 = iwl_mvm_enter_d0i3, | |
922 | .exit_d0i3 = iwl_mvm_exit_d0i3, | |
923 | }; |