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Merge tag 'wireless-drivers-next-for-davem-2016-05-13' of git://git.kernel.org/pub...
[deliverable/linux.git] / drivers / net / wireless / intel / iwlwifi / mvm / ops.c
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 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <linuxwifi@intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
36 * Copyright(c) 2016 Intel Deutschland GmbH
37 * All rights reserved.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 *
43 * * Redistributions of source code must retain the above copyright
44 * notice, this list of conditions and the following disclaimer.
45 * * Redistributions in binary form must reproduce the above copyright
46 * notice, this list of conditions and the following disclaimer in
47 * the documentation and/or other materials provided with the
48 * distribution.
49 * * Neither the name Intel Corporation nor the names of its
50 * contributors may be used to endorse or promote products derived
51 * from this software without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *
65 *****************************************************************************/
66 #include <linux/module.h>
67 #include <linux/vmalloc.h>
68 #include <net/mac80211.h>
69
70 #include "iwl-notif-wait.h"
71 #include "iwl-trans.h"
72 #include "iwl-op-mode.h"
73 #include "iwl-fw.h"
74 #include "iwl-debug.h"
75 #include "iwl-drv.h"
76 #include "iwl-modparams.h"
77 #include "mvm.h"
78 #include "iwl-phy-db.h"
79 #include "iwl-eeprom-parse.h"
80 #include "iwl-csr.h"
81 #include "iwl-io.h"
82 #include "iwl-prph.h"
83 #include "rs.h"
84 #include "fw-api-scan.h"
85 #include "time-event.h"
86 #include "fw-dbg.h"
87 #include "fw-api.h"
88 #include "fw-api-scan.h"
89
90 #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
91 MODULE_DESCRIPTION(DRV_DESCRIPTION);
92 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
93 MODULE_LICENSE("GPL");
94
95 static const struct iwl_op_mode_ops iwl_mvm_ops;
96 static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
97
98 struct iwl_mvm_mod_params iwlmvm_mod_params = {
99 .power_scheme = IWL_POWER_SCHEME_BPS,
100 .tfd_q_hang_detect = true
101 /* rest of fields are 0 by default */
102 };
103
104 module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
105 MODULE_PARM_DESC(init_dbg,
106 "set to true to debug an ASSERT in INIT fw (default: false");
107 module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
108 MODULE_PARM_DESC(power_scheme,
109 "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
110 module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
111 bool, S_IRUGO);
112 MODULE_PARM_DESC(tfd_q_hang_detect,
113 "TFD queues hang detection (default: true");
114
115 /*
116 * module init and exit functions
117 */
118 static int __init iwl_mvm_init(void)
119 {
120 int ret;
121
122 ret = iwl_mvm_rate_control_register();
123 if (ret) {
124 pr_err("Unable to register rate control algorithm: %d\n", ret);
125 return ret;
126 }
127
128 ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
129
130 if (ret) {
131 pr_err("Unable to register MVM op_mode: %d\n", ret);
132 iwl_mvm_rate_control_unregister();
133 }
134
135 return ret;
136 }
137 module_init(iwl_mvm_init);
138
139 static void __exit iwl_mvm_exit(void)
140 {
141 iwl_opmode_deregister("iwlmvm");
142 iwl_mvm_rate_control_unregister();
143 }
144 module_exit(iwl_mvm_exit);
145
146 static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
147 {
148 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
149 u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
150 u32 reg_val = 0;
151 u32 phy_config = iwl_mvm_get_phy_config(mvm);
152
153 radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
154 FW_PHY_CFG_RADIO_TYPE_POS;
155 radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
156 FW_PHY_CFG_RADIO_STEP_POS;
157 radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
158 FW_PHY_CFG_RADIO_DASH_POS;
159
160 /* SKU control */
161 reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
162 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
163 reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
164 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
165
166 /* radio configuration */
167 reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
168 reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
169 reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
170
171 WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
172 ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
173
174 /*
175 * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
176 * shouldn't be set to any non-zero value. The same is supposed to be
177 * true of the other HW, but unsetting them (such as the 7260) causes
178 * automatic tests to fail on seemingly unrelated errors. Need to
179 * further investigate this, but for now we'll separate cases.
180 */
181 if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
182 reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
183
184 iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
185 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
186 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
187 CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
188 CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
189 CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
190 CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
191 CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
192 reg_val);
193
194 IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
195 radio_cfg_step, radio_cfg_dash);
196
197 /*
198 * W/A : NIC is stuck in a reset state after Early PCIe power off
199 * (PCIe power is lost before PERST# is asserted), causing ME FW
200 * to lose ownership and not being able to obtain it back.
201 */
202 if (!mvm->trans->cfg->apmg_not_supported)
203 iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
204 APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
205 ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
206 }
207
208 /**
209 * enum iwl_rx_handler_context context for Rx handler
210 * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
211 * which can't acquire mvm->mutex.
212 * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
213 * (and only in this case!), it should be set as ASYNC. In that case,
214 * it will be called from a worker with mvm->mutex held.
215 * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
216 * mutex itself, it will be called from a worker without mvm->mutex held.
217 */
218 enum iwl_rx_handler_context {
219 RX_HANDLER_SYNC,
220 RX_HANDLER_ASYNC_LOCKED,
221 RX_HANDLER_ASYNC_UNLOCKED,
222 };
223
224 /**
225 * struct iwl_rx_handlers handler for FW notification
226 * @cmd_id: command id
227 * @context: see &iwl_rx_handler_context
228 * @fn: the function is called when notification is received
229 */
230 struct iwl_rx_handlers {
231 u16 cmd_id;
232 enum iwl_rx_handler_context context;
233 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
234 };
235
236 #define RX_HANDLER(_cmd_id, _fn, _context) \
237 { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
238 #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \
239 { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
240
241 /*
242 * Handlers for fw notifications
243 * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
244 * This list should be in order of frequency for performance purposes.
245 *
246 * The handler can be one from three contexts, see &iwl_rx_handler_context
247 */
248 static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
249 RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
250 RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
251
252 RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
253 RX_HANDLER_ASYNC_LOCKED),
254 RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
255 RX_HANDLER_ASYNC_LOCKED),
256 RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
257 RX_HANDLER_ASYNC_LOCKED),
258 RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
259 iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED),
260
261 RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
262 iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
263
264 RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
265 RX_HANDLER_SYNC),
266 RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
267 RX_HANDLER_ASYNC_LOCKED),
268
269 RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
270
271 RX_HANDLER(SCAN_ITERATION_COMPLETE,
272 iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
273 RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
274 iwl_mvm_rx_lmac_scan_complete_notif,
275 RX_HANDLER_ASYNC_LOCKED),
276 RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
277 RX_HANDLER_SYNC),
278 RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
279 RX_HANDLER_ASYNC_LOCKED),
280 RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
281 iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
282
283 RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
284 RX_HANDLER_SYNC),
285
286 RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
287 RX_HANDLER_SYNC),
288
289 RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
290 RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
291 iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
292 RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
293 RX_HANDLER_ASYNC_LOCKED),
294 RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
295 iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
296 RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
297 iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
298
299 RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
300 RX_HANDLER_ASYNC_LOCKED),
301 RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
302 RX_HANDLER_SYNC),
303 RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
304 RX_HANDLER_ASYNC_LOCKED),
305 RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
306 iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
307 RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
308 iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
309 };
310 #undef RX_HANDLER
311 #undef RX_HANDLER_GRP
312
313 /* Please keep this array *SORTED* by hex value.
314 * Access is done through binary search
315 */
316 static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
317 HCMD_NAME(MVM_ALIVE),
318 HCMD_NAME(REPLY_ERROR),
319 HCMD_NAME(ECHO_CMD),
320 HCMD_NAME(INIT_COMPLETE_NOTIF),
321 HCMD_NAME(PHY_CONTEXT_CMD),
322 HCMD_NAME(DBG_CFG),
323 HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION),
324 HCMD_NAME(SCAN_CFG_CMD),
325 HCMD_NAME(SCAN_REQ_UMAC),
326 HCMD_NAME(SCAN_ABORT_UMAC),
327 HCMD_NAME(SCAN_COMPLETE_UMAC),
328 HCMD_NAME(TOF_CMD),
329 HCMD_NAME(TOF_NOTIFICATION),
330 HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
331 HCMD_NAME(ADD_STA_KEY),
332 HCMD_NAME(ADD_STA),
333 HCMD_NAME(REMOVE_STA),
334 HCMD_NAME(FW_GET_ITEM_CMD),
335 HCMD_NAME(TX_CMD),
336 HCMD_NAME(SCD_QUEUE_CFG),
337 HCMD_NAME(TXPATH_FLUSH),
338 HCMD_NAME(MGMT_MCAST_KEY),
339 HCMD_NAME(WEP_KEY),
340 HCMD_NAME(SHARED_MEM_CFG),
341 HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
342 HCMD_NAME(MAC_CONTEXT_CMD),
343 HCMD_NAME(TIME_EVENT_CMD),
344 HCMD_NAME(TIME_EVENT_NOTIFICATION),
345 HCMD_NAME(BINDING_CONTEXT_CMD),
346 HCMD_NAME(TIME_QUOTA_CMD),
347 HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
348 HCMD_NAME(LQ_CMD),
349 HCMD_NAME(FW_PAGING_BLOCK_CMD),
350 HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
351 HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
352 HCMD_NAME(HOT_SPOT_CMD),
353 HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
354 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
355 HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
356 HCMD_NAME(BT_COEX_UPDATE_SW_BOOST),
357 HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT),
358 HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
359 HCMD_NAME(BT_COEX_CI),
360 HCMD_NAME(PHY_CONFIGURATION_CMD),
361 HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
362 HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
363 HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
364 HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD),
365 HCMD_NAME(POWER_TABLE_CMD),
366 HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
367 HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
368 HCMD_NAME(DC2DC_CONFIG_CMD),
369 HCMD_NAME(NVM_ACCESS_CMD),
370 HCMD_NAME(SET_CALIB_DEFAULT_CMD),
371 HCMD_NAME(BEACON_NOTIFICATION),
372 HCMD_NAME(BEACON_TEMPLATE_CMD),
373 HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
374 HCMD_NAME(BT_CONFIG),
375 HCMD_NAME(STATISTICS_CMD),
376 HCMD_NAME(STATISTICS_NOTIFICATION),
377 HCMD_NAME(EOSP_NOTIFICATION),
378 HCMD_NAME(REDUCE_TX_POWER_CMD),
379 HCMD_NAME(CARD_STATE_CMD),
380 HCMD_NAME(CARD_STATE_NOTIFICATION),
381 HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
382 HCMD_NAME(TDLS_CONFIG_CMD),
383 HCMD_NAME(MAC_PM_POWER_TABLE),
384 HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
385 HCMD_NAME(MFUART_LOAD_NOTIFICATION),
386 HCMD_NAME(RSS_CONFIG_CMD),
387 HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
388 HCMD_NAME(REPLY_RX_PHY_CMD),
389 HCMD_NAME(REPLY_RX_MPDU_CMD),
390 HCMD_NAME(BA_NOTIF),
391 HCMD_NAME(MCC_UPDATE_CMD),
392 HCMD_NAME(MCC_CHUB_UPDATE_CMD),
393 HCMD_NAME(MARKER_CMD),
394 HCMD_NAME(BT_COEX_PRIO_TABLE),
395 HCMD_NAME(BT_COEX_PROT_ENV),
396 HCMD_NAME(BT_PROFILE_NOTIFICATION),
397 HCMD_NAME(BCAST_FILTER_CMD),
398 HCMD_NAME(MCAST_FILTER_CMD),
399 HCMD_NAME(REPLY_SF_CFG_CMD),
400 HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
401 HCMD_NAME(D3_CONFIG_CMD),
402 HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
403 HCMD_NAME(OFFLOADS_QUERY_CMD),
404 HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
405 HCMD_NAME(MATCH_FOUND_NOTIFICATION),
406 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER),
407 HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
408 HCMD_NAME(WOWLAN_PATTERNS),
409 HCMD_NAME(WOWLAN_CONFIGURATION),
410 HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
411 HCMD_NAME(WOWLAN_TKIP_PARAM),
412 HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
413 HCMD_NAME(WOWLAN_GET_STATUSES),
414 HCMD_NAME(WOWLAN_TX_POWER_PER_DB),
415 HCMD_NAME(SCAN_ITERATION_COMPLETE),
416 HCMD_NAME(D0I3_END_CMD),
417 HCMD_NAME(LTR_CONFIG),
418 HCMD_NAME(REPLY_DEBUG_CMD),
419 };
420
421 /* Please keep this array *SORTED* by hex value.
422 * Access is done through binary search
423 */
424 static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
425 HCMD_NAME(SHARED_MEM_CFG_CMD),
426 };
427
428 /* Please keep this array *SORTED* by hex value.
429 * Access is done through binary search
430 */
431 static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
432 HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
433 HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
434 };
435
436 /* Please keep this array *SORTED* by hex value.
437 * Access is done through binary search
438 */
439 static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
440 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
441 HCMD_NAME(CTDP_CONFIG_CMD),
442 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
443 HCMD_NAME(CT_KILL_NOTIFICATION),
444 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
445 };
446
447 /* Please keep this array *SORTED* by hex value.
448 * Access is done through binary search
449 */
450 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
451 HCMD_NAME(UPDATE_MU_GROUPS_CMD),
452 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
453 HCMD_NAME(MU_GROUP_MGMT_NOTIF),
454 HCMD_NAME(RX_QUEUES_NOTIFICATION),
455 };
456
457 /* Please keep this array *SORTED* by hex value.
458 * Access is done through binary search
459 */
460 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
461 HCMD_NAME(STORED_BEACON_NTF),
462 };
463
464 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
465 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
466 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
467 [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
468 [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
469 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
470 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
471 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
472 };
473
474 /* this forward declaration can avoid to export the function */
475 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
476 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
477
478 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
479 {
480 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
481
482 if (!pwr_tx_backoff)
483 return 0;
484
485 while (pwr_tx_backoff->pwr) {
486 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
487 return pwr_tx_backoff->backoff;
488
489 pwr_tx_backoff++;
490 }
491
492 return 0;
493 }
494
495 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
496
497 static struct iwl_op_mode *
498 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
499 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
500 {
501 struct ieee80211_hw *hw;
502 struct iwl_op_mode *op_mode;
503 struct iwl_mvm *mvm;
504 struct iwl_trans_config trans_cfg = {};
505 static const u8 no_reclaim_cmds[] = {
506 TX_CMD,
507 };
508 int err, scan_size;
509 u32 min_backoff;
510
511 /*
512 * We use IWL_MVM_STATION_COUNT to check the validity of the station
513 * index all over the driver - check that its value corresponds to the
514 * array size.
515 */
516 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
517
518 /********************************
519 * 1. Allocating and configuring HW data
520 ********************************/
521 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
522 sizeof(struct iwl_mvm),
523 &iwl_mvm_hw_ops);
524 if (!hw)
525 return NULL;
526
527 if (cfg->max_rx_agg_size)
528 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
529
530 if (cfg->max_tx_agg_size)
531 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
532
533 op_mode = hw->priv;
534
535 mvm = IWL_OP_MODE_GET_MVM(op_mode);
536 mvm->dev = trans->dev;
537 mvm->trans = trans;
538 mvm->cfg = cfg;
539 mvm->fw = fw;
540 mvm->hw = hw;
541
542 if (iwl_mvm_has_new_rx_api(mvm)) {
543 op_mode->ops = &iwl_mvm_ops_mq;
544 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
545 } else {
546 op_mode->ops = &iwl_mvm_ops;
547 trans->rx_mpdu_cmd_hdr_size =
548 sizeof(struct iwl_rx_mpdu_res_start);
549
550 if (WARN_ON(trans->num_rx_queues > 1))
551 goto out_free;
552 }
553
554 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
555
556 mvm->aux_queue = 15;
557 if (!iwl_mvm_is_dqa_supported(mvm)) {
558 mvm->first_agg_queue = 16;
559 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
560 } else {
561 mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
562 mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
563 }
564 if (mvm->cfg->base_params->num_of_queues == 16) {
565 mvm->aux_queue = 11;
566 mvm->first_agg_queue = 12;
567 }
568 mvm->sf_state = SF_UNINIT;
569 mvm->cur_ucode = IWL_UCODE_INIT;
570 mvm->drop_bcn_ap_mode = true;
571
572 mutex_init(&mvm->mutex);
573 mutex_init(&mvm->d0i3_suspend_mutex);
574 spin_lock_init(&mvm->async_handlers_lock);
575 INIT_LIST_HEAD(&mvm->time_event_list);
576 INIT_LIST_HEAD(&mvm->aux_roc_te_list);
577 INIT_LIST_HEAD(&mvm->async_handlers_list);
578 spin_lock_init(&mvm->time_event_lock);
579 spin_lock_init(&mvm->queue_info_lock);
580
581 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
582 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
583 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
584 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
585 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
586 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
587 INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
588
589 spin_lock_init(&mvm->d0i3_tx_lock);
590 spin_lock_init(&mvm->refs_lock);
591 skb_queue_head_init(&mvm->d0i3_tx);
592 init_waitqueue_head(&mvm->d0i3_exit_waitq);
593
594 atomic_set(&mvm->queue_sync_counter, 0);
595
596 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
597
598 /*
599 * Populate the state variables that the transport layer needs
600 * to know about.
601 */
602 trans_cfg.op_mode = op_mode;
603 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
604 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
605 switch (iwlwifi_mod_params.amsdu_size) {
606 case IWL_AMSDU_4K:
607 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
608 break;
609 case IWL_AMSDU_8K:
610 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
611 break;
612 case IWL_AMSDU_12K:
613 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
614 break;
615 default:
616 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
617 iwlwifi_mod_params.amsdu_size);
618 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
619 }
620 trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
621 IWL_UCODE_TLV_API_WIDE_CMD_HDR);
622
623 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
624 trans_cfg.bc_table_dword = true;
625
626 trans_cfg.command_groups = iwl_mvm_groups;
627 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
628
629 if (iwl_mvm_is_dqa_supported(mvm))
630 trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
631 else
632 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
633 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
634 trans_cfg.scd_set_active = true;
635
636 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
637 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
638
639 /* Set a short watchdog for the command queue */
640 trans_cfg.cmd_q_wdg_timeout =
641 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
642
643 snprintf(mvm->hw->wiphy->fw_version,
644 sizeof(mvm->hw->wiphy->fw_version),
645 "%s", fw->fw_version);
646
647 /* Configure transport layer */
648 iwl_trans_configure(mvm->trans, &trans_cfg);
649
650 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
651 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
652 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
653 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
654 sizeof(trans->dbg_conf_tlv));
655 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
656
657 /* set up notification wait support */
658 iwl_notification_wait_init(&mvm->notif_wait);
659
660 /* Init phy db */
661 mvm->phy_db = iwl_phy_db_init(trans);
662 if (!mvm->phy_db) {
663 IWL_ERR(mvm, "Cannot init phy_db\n");
664 goto out_free;
665 }
666
667 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
668 mvm->cfg->name, mvm->trans->hw_rev);
669
670 if (iwlwifi_mod_params.nvm_file)
671 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
672 else
673 IWL_DEBUG_EEPROM(mvm->trans->dev,
674 "working without external nvm file\n");
675
676 if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
677 "not allowing power-up and not having nvm_file\n"))
678 goto out_free;
679
680 /*
681 * Even if nvm exists in the nvm_file driver should read again the nvm
682 * from the nic because there might be entries that exist in the OTP
683 * and not in the file.
684 * for nics with no_power_up_nic_in_init: rely completley on nvm_file
685 */
686 if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
687 err = iwl_nvm_init(mvm, false);
688 if (err)
689 goto out_free;
690 } else {
691 err = iwl_trans_start_hw(mvm->trans);
692 if (err)
693 goto out_free;
694
695 mutex_lock(&mvm->mutex);
696 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
697 err = iwl_run_init_mvm_ucode(mvm, true);
698 if (!err || !iwlmvm_mod_params.init_dbg)
699 iwl_mvm_stop_device(mvm);
700 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
701 mutex_unlock(&mvm->mutex);
702 /* returns 0 if successful, 1 if success but in rfkill */
703 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
704 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
705 goto out_free;
706 }
707 }
708
709 scan_size = iwl_mvm_scan_size(mvm);
710
711 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
712 if (!mvm->scan_cmd)
713 goto out_free;
714
715 /* Set EBS as successful as long as not stated otherwise by the FW. */
716 mvm->last_ebs_successful = true;
717
718 err = iwl_mvm_mac_setup_register(mvm);
719 if (err)
720 goto out_free;
721
722 min_backoff = calc_min_backoff(trans, cfg);
723 iwl_mvm_thermal_initialize(mvm, min_backoff);
724
725 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
726 if (err)
727 goto out_unregister;
728
729 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
730
731 /* The transport always starts with a taken reference, we can
732 * release it now if d0i3 is supported */
733 if (iwl_mvm_is_d0i3_supported(mvm))
734 iwl_trans_unref(mvm->trans);
735
736 iwl_mvm_tof_init(mvm);
737
738 setup_timer(&mvm->scan_timer, iwl_mvm_scan_timeout,
739 (unsigned long)mvm);
740
741 return op_mode;
742
743 out_unregister:
744 ieee80211_unregister_hw(mvm->hw);
745 iwl_mvm_leds_exit(mvm);
746 iwl_mvm_thermal_exit(mvm);
747 out_free:
748 flush_delayed_work(&mvm->fw_dump_wk);
749 iwl_phy_db_free(mvm->phy_db);
750 kfree(mvm->scan_cmd);
751 if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
752 iwl_trans_op_mode_leave(trans);
753 ieee80211_free_hw(mvm->hw);
754 return NULL;
755 }
756
757 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
758 {
759 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
760 int i;
761
762 /* If d0i3 is supported, we have released the reference that
763 * the transport started with, so we should take it back now
764 * that we are leaving.
765 */
766 if (iwl_mvm_is_d0i3_supported(mvm))
767 iwl_trans_ref(mvm->trans);
768
769 iwl_mvm_leds_exit(mvm);
770
771 iwl_mvm_thermal_exit(mvm);
772
773 ieee80211_unregister_hw(mvm->hw);
774
775 kfree(mvm->scan_cmd);
776 kfree(mvm->mcast_filter_cmd);
777 mvm->mcast_filter_cmd = NULL;
778
779 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
780 kfree(mvm->d3_resume_sram);
781 #endif
782
783 iwl_trans_op_mode_leave(mvm->trans);
784
785 iwl_phy_db_free(mvm->phy_db);
786 mvm->phy_db = NULL;
787
788 iwl_free_nvm_data(mvm->nvm_data);
789 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
790 kfree(mvm->nvm_sections[i].data);
791
792 iwl_mvm_tof_clean(mvm);
793
794 del_timer_sync(&mvm->scan_timer);
795
796 mutex_destroy(&mvm->mutex);
797 mutex_destroy(&mvm->d0i3_suspend_mutex);
798
799 ieee80211_free_hw(mvm->hw);
800 }
801
802 struct iwl_async_handler_entry {
803 struct list_head list;
804 struct iwl_rx_cmd_buffer rxb;
805 enum iwl_rx_handler_context context;
806 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
807 };
808
809 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
810 {
811 struct iwl_async_handler_entry *entry, *tmp;
812
813 spin_lock_bh(&mvm->async_handlers_lock);
814 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
815 iwl_free_rxb(&entry->rxb);
816 list_del(&entry->list);
817 kfree(entry);
818 }
819 spin_unlock_bh(&mvm->async_handlers_lock);
820 }
821
822 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
823 {
824 struct iwl_mvm *mvm =
825 container_of(wk, struct iwl_mvm, async_handlers_wk);
826 struct iwl_async_handler_entry *entry, *tmp;
827 struct list_head local_list;
828
829 INIT_LIST_HEAD(&local_list);
830
831 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
832
833 /*
834 * Sync with Rx path with a lock. Remove all the entries from this list,
835 * add them to a local one (lock free), and then handle them.
836 */
837 spin_lock_bh(&mvm->async_handlers_lock);
838 list_splice_init(&mvm->async_handlers_list, &local_list);
839 spin_unlock_bh(&mvm->async_handlers_lock);
840
841 list_for_each_entry_safe(entry, tmp, &local_list, list) {
842 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
843 mutex_lock(&mvm->mutex);
844 entry->fn(mvm, &entry->rxb);
845 iwl_free_rxb(&entry->rxb);
846 list_del(&entry->list);
847 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
848 mutex_unlock(&mvm->mutex);
849 kfree(entry);
850 }
851 }
852
853 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
854 struct iwl_rx_packet *pkt)
855 {
856 struct iwl_fw_dbg_trigger_tlv *trig;
857 struct iwl_fw_dbg_trigger_cmd *cmds_trig;
858 int i;
859
860 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
861 return;
862
863 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
864 cmds_trig = (void *)trig->data;
865
866 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
867 return;
868
869 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
870 /* don't collect on CMD 0 */
871 if (!cmds_trig->cmds[i].cmd_id)
872 break;
873
874 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
875 cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
876 continue;
877
878 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
879 "CMD 0x%02x.%02x received",
880 pkt->hdr.group_id, pkt->hdr.cmd);
881 break;
882 }
883 }
884
885 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
886 struct iwl_rx_cmd_buffer *rxb,
887 struct iwl_rx_packet *pkt)
888 {
889 int i;
890
891 iwl_mvm_rx_check_trigger(mvm, pkt);
892
893 /*
894 * Do the notification wait before RX handlers so
895 * even if the RX handler consumes the RXB we have
896 * access to it in the notification wait entry.
897 */
898 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
899
900 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
901 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
902 struct iwl_async_handler_entry *entry;
903
904 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
905 continue;
906
907 if (rx_h->context == RX_HANDLER_SYNC) {
908 rx_h->fn(mvm, rxb);
909 return;
910 }
911
912 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
913 /* we can't do much... */
914 if (!entry)
915 return;
916
917 entry->rxb._page = rxb_steal_page(rxb);
918 entry->rxb._offset = rxb->_offset;
919 entry->rxb._rx_page_order = rxb->_rx_page_order;
920 entry->fn = rx_h->fn;
921 entry->context = rx_h->context;
922 spin_lock(&mvm->async_handlers_lock);
923 list_add_tail(&entry->list, &mvm->async_handlers_list);
924 spin_unlock(&mvm->async_handlers_lock);
925 schedule_work(&mvm->async_handlers_wk);
926 break;
927 }
928 }
929
930 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
931 struct napi_struct *napi,
932 struct iwl_rx_cmd_buffer *rxb)
933 {
934 struct iwl_rx_packet *pkt = rxb_addr(rxb);
935 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
936
937 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
938 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
939 else if (pkt->hdr.cmd == FRAME_RELEASE)
940 iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
941 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
942 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
943 else
944 iwl_mvm_rx_common(mvm, rxb, pkt);
945 }
946
947 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
948 struct napi_struct *napi,
949 struct iwl_rx_cmd_buffer *rxb)
950 {
951 struct iwl_rx_packet *pkt = rxb_addr(rxb);
952 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
953
954 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
955 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
956 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
957 iwl_mvm_rx_phy_cmd_mq(mvm, rxb);
958 else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP &&
959 pkt->hdr.cmd == RX_QUEUES_NOTIFICATION))
960 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
961 else
962 iwl_mvm_rx_common(mvm, rxb, pkt);
963 }
964
965 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
966 {
967 int q;
968
969 if (WARN_ON_ONCE(!mq))
970 return;
971
972 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
973 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
974 IWL_DEBUG_TX_QUEUES(mvm,
975 "mac80211 %d already stopped\n", q);
976 continue;
977 }
978
979 ieee80211_stop_queue(mvm->hw, q);
980 }
981 }
982
983 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
984 const struct iwl_device_cmd *cmd)
985 {
986 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
987
988 /*
989 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
990 * commands that need to block the Tx queues.
991 */
992 iwl_trans_block_txq_ptrs(mvm->trans, false);
993 }
994
995 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
996 {
997 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
998 unsigned long mq;
999
1000 spin_lock_bh(&mvm->queue_info_lock);
1001 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1002 spin_unlock_bh(&mvm->queue_info_lock);
1003
1004 iwl_mvm_stop_mac_queues(mvm, mq);
1005 }
1006
1007 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
1008 {
1009 int q;
1010
1011 if (WARN_ON_ONCE(!mq))
1012 return;
1013
1014 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
1015 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
1016 IWL_DEBUG_TX_QUEUES(mvm,
1017 "mac80211 %d still stopped\n", q);
1018 continue;
1019 }
1020
1021 ieee80211_wake_queue(mvm->hw, q);
1022 }
1023 }
1024
1025 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
1026 {
1027 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1028 unsigned long mq;
1029
1030 spin_lock_bh(&mvm->queue_info_lock);
1031 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
1032 spin_unlock_bh(&mvm->queue_info_lock);
1033
1034 iwl_mvm_start_mac_queues(mvm, mq);
1035 }
1036
1037 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1038 {
1039 if (state)
1040 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1041 else
1042 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1043
1044 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1045 }
1046
1047 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1048 {
1049 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1050 bool calibrating = ACCESS_ONCE(mvm->calibrating);
1051
1052 if (state)
1053 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1054 else
1055 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1056
1057 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1058
1059 /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1060 if (calibrating)
1061 iwl_abort_notification_waits(&mvm->notif_wait);
1062
1063 /*
1064 * Stop the device if we run OPERATIONAL firmware or if we are in the
1065 * middle of the calibrations.
1066 */
1067 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1068 }
1069
1070 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1071 {
1072 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1073 struct ieee80211_tx_info *info;
1074
1075 info = IEEE80211_SKB_CB(skb);
1076 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1077 ieee80211_free_txskb(mvm->hw, skb);
1078 }
1079
1080 struct iwl_mvm_reprobe {
1081 struct device *dev;
1082 struct work_struct work;
1083 };
1084
1085 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1086 {
1087 struct iwl_mvm_reprobe *reprobe;
1088
1089 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1090 if (device_reprobe(reprobe->dev))
1091 dev_err(reprobe->dev, "reprobe failed!\n");
1092 kfree(reprobe);
1093 module_put(THIS_MODULE);
1094 }
1095
1096 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1097 {
1098 struct iwl_mvm *mvm =
1099 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1100
1101 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1102 return;
1103
1104 mutex_lock(&mvm->mutex);
1105
1106 /* stop recording */
1107 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1108 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1109 } else {
1110 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1111 /* wait before we collect the data till the DBGC stop */
1112 udelay(100);
1113 }
1114
1115 iwl_mvm_fw_error_dump(mvm);
1116
1117 /* start recording again if the firmware is not crashed */
1118 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1119 mvm->fw->dbg_dest_tlv &&
1120 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1121
1122 mutex_unlock(&mvm->mutex);
1123
1124 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1125 }
1126
1127 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1128 {
1129 iwl_abort_notification_waits(&mvm->notif_wait);
1130
1131 /*
1132 * This is a bit racy, but worst case we tell mac80211 about
1133 * a stopped/aborted scan when that was already done which
1134 * is not a problem. It is necessary to abort any os scan
1135 * here because mac80211 requires having the scan cleared
1136 * before restarting.
1137 * We'll reset the scan_status to NONE in restart cleanup in
1138 * the next start() call from mac80211. If restart isn't called
1139 * (no fw restart) scan status will stay busy.
1140 */
1141 iwl_mvm_report_scan_aborted(mvm);
1142
1143 /*
1144 * If we're restarting already, don't cycle restarts.
1145 * If INIT fw asserted, it will likely fail again.
1146 * If WoWLAN fw asserted, don't restart either, mac80211
1147 * can't recover this since we're already half suspended.
1148 */
1149 if (!mvm->restart_fw && fw_error) {
1150 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1151 NULL);
1152 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1153 &mvm->status)) {
1154 struct iwl_mvm_reprobe *reprobe;
1155
1156 IWL_ERR(mvm,
1157 "Firmware error during reconfiguration - reprobe!\n");
1158
1159 /*
1160 * get a module reference to avoid doing this while unloading
1161 * anyway and to avoid scheduling a work with code that's
1162 * being removed.
1163 */
1164 if (!try_module_get(THIS_MODULE)) {
1165 IWL_ERR(mvm, "Module is being unloaded - abort\n");
1166 return;
1167 }
1168
1169 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1170 if (!reprobe) {
1171 module_put(THIS_MODULE);
1172 return;
1173 }
1174 reprobe->dev = mvm->trans->dev;
1175 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1176 schedule_work(&reprobe->work);
1177 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1178 /* don't let the transport/FW power down */
1179 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1180
1181 if (fw_error && mvm->restart_fw > 0)
1182 mvm->restart_fw--;
1183 ieee80211_restart_hw(mvm->hw);
1184 }
1185 }
1186
1187 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1188 {
1189 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1190
1191 iwl_mvm_dump_nic_error_log(mvm);
1192
1193 iwl_mvm_nic_restart(mvm, true);
1194 }
1195
1196 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1197 {
1198 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1199
1200 WARN_ON(1);
1201 iwl_mvm_nic_restart(mvm, true);
1202 }
1203
1204 struct iwl_d0i3_iter_data {
1205 struct iwl_mvm *mvm;
1206 struct ieee80211_vif *connected_vif;
1207 u8 ap_sta_id;
1208 u8 vif_count;
1209 u8 offloading_tid;
1210 bool disable_offloading;
1211 };
1212
1213 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1214 struct ieee80211_vif *vif,
1215 struct iwl_d0i3_iter_data *iter_data)
1216 {
1217 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1218 struct iwl_mvm_sta *mvmsta;
1219 u32 available_tids = 0;
1220 u8 tid;
1221
1222 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1223 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1224 return false;
1225
1226 mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
1227 if (!mvmsta)
1228 return false;
1229
1230 spin_lock_bh(&mvmsta->lock);
1231 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1232 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1233
1234 /*
1235 * in case of pending tx packets, don't use this tid
1236 * for offloading in order to prevent reuse of the same
1237 * qos seq counters.
1238 */
1239 if (iwl_mvm_tid_queued(tid_data))
1240 continue;
1241
1242 if (tid_data->state != IWL_AGG_OFF)
1243 continue;
1244
1245 available_tids |= BIT(tid);
1246 }
1247 spin_unlock_bh(&mvmsta->lock);
1248
1249 /*
1250 * disallow protocol offloading if we have no available tid
1251 * (with no pending frames and no active aggregation,
1252 * as we don't handle "holes" properly - the scheduler needs the
1253 * frame's seq number and TFD index to match)
1254 */
1255 if (!available_tids)
1256 return true;
1257
1258 /* for simplicity, just use the first available tid */
1259 iter_data->offloading_tid = ffs(available_tids) - 1;
1260 return false;
1261 }
1262
1263 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1264 struct ieee80211_vif *vif)
1265 {
1266 struct iwl_d0i3_iter_data *data = _data;
1267 struct iwl_mvm *mvm = data->mvm;
1268 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1269 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1270
1271 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1272 if (vif->type != NL80211_IFTYPE_STATION ||
1273 !vif->bss_conf.assoc)
1274 return;
1275
1276 /*
1277 * in case of pending tx packets or active aggregations,
1278 * avoid offloading features in order to prevent reuse of
1279 * the same qos seq counters.
1280 */
1281 if (iwl_mvm_disallow_offloading(mvm, vif, data))
1282 data->disable_offloading = true;
1283
1284 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1285 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1286 false, flags);
1287
1288 /*
1289 * on init/association, mvm already configures POWER_TABLE_CMD
1290 * and REPLY_MCAST_FILTER_CMD, so currently don't
1291 * reconfigure them (we might want to use different
1292 * params later on, though).
1293 */
1294 data->ap_sta_id = mvmvif->ap_sta_id;
1295 data->vif_count++;
1296
1297 /*
1298 * no new commands can be sent at this stage, so it's safe
1299 * to save the vif pointer during d0i3 entrance.
1300 */
1301 data->connected_vif = vif;
1302 }
1303
1304 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1305 struct iwl_wowlan_config_cmd *cmd,
1306 struct iwl_d0i3_iter_data *iter_data)
1307 {
1308 struct ieee80211_sta *ap_sta;
1309 struct iwl_mvm_sta *mvm_ap_sta;
1310
1311 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1312 return;
1313
1314 rcu_read_lock();
1315
1316 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1317 if (IS_ERR_OR_NULL(ap_sta))
1318 goto out;
1319
1320 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1321 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1322 cmd->offloading_tid = iter_data->offloading_tid;
1323 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1324 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1325 /*
1326 * The d0i3 uCode takes care of the nonqos counters,
1327 * so configure only the qos seq ones.
1328 */
1329 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1330 out:
1331 rcu_read_unlock();
1332 }
1333
1334 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1335 {
1336 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1337 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1338 int ret;
1339 struct iwl_d0i3_iter_data d0i3_iter_data = {
1340 .mvm = mvm,
1341 };
1342 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1343 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1344 IWL_WOWLAN_WAKEUP_BEACON_MISS |
1345 IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1346 };
1347 struct iwl_d3_manager_config d3_cfg_cmd = {
1348 .min_sleep_time = cpu_to_le32(1000),
1349 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1350 };
1351
1352 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1353
1354 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1355 return -EINVAL;
1356
1357 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1358
1359 /*
1360 * iwl_mvm_ref_sync takes a reference before checking the flag.
1361 * so by checking there is no held reference we prevent a state
1362 * in which iwl_mvm_ref_sync continues successfully while we
1363 * configure the firmware to enter d0i3
1364 */
1365 if (iwl_mvm_ref_taken(mvm)) {
1366 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1367 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1368 wake_up(&mvm->d0i3_exit_waitq);
1369 return 1;
1370 }
1371
1372 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1373 IEEE80211_IFACE_ITER_NORMAL,
1374 iwl_mvm_enter_d0i3_iterator,
1375 &d0i3_iter_data);
1376 if (d0i3_iter_data.vif_count == 1) {
1377 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1378 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1379 } else {
1380 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1381 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1382 mvm->d0i3_offloading = false;
1383 }
1384
1385 /* make sure we have no running tx while configuring the seqno */
1386 synchronize_net();
1387
1388 /* Flush the hw queues, in case something got queued during entry */
1389 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1390 if (ret)
1391 return ret;
1392
1393 /* configure wowlan configuration only if needed */
1394 if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1395 /* wake on beacons only if beacon storing isn't supported */
1396 if (!fw_has_capa(&mvm->fw->ucode_capa,
1397 IWL_UCODE_TLV_CAPA_BEACON_STORING))
1398 wowlan_config_cmd.wakeup_filter |=
1399 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1400
1401 iwl_mvm_wowlan_config_key_params(mvm,
1402 d0i3_iter_data.connected_vif,
1403 true, flags);
1404
1405 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1406 &d0i3_iter_data);
1407
1408 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1409 sizeof(wowlan_config_cmd),
1410 &wowlan_config_cmd);
1411 if (ret)
1412 return ret;
1413 }
1414
1415 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1416 flags | CMD_MAKE_TRANS_IDLE,
1417 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1418 }
1419
1420 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1421 struct ieee80211_vif *vif)
1422 {
1423 struct iwl_mvm *mvm = _data;
1424 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1425
1426 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1427 if (vif->type != NL80211_IFTYPE_STATION ||
1428 !vif->bss_conf.assoc)
1429 return;
1430
1431 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1432 }
1433
1434 struct iwl_mvm_d0i3_exit_work_iter_data {
1435 struct iwl_mvm *mvm;
1436 struct iwl_wowlan_status *status;
1437 u32 wakeup_reasons;
1438 };
1439
1440 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1441 struct ieee80211_vif *vif)
1442 {
1443 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1444 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1445 u32 reasons = data->wakeup_reasons;
1446
1447 /* consider only the relevant station interface */
1448 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1449 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1450 return;
1451
1452 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1453 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1454 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1455 ieee80211_beacon_loss(vif);
1456 else
1457 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1458 }
1459
1460 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1461 {
1462 struct ieee80211_sta *sta = NULL;
1463 struct iwl_mvm_sta *mvm_ap_sta;
1464 int i;
1465 bool wake_queues = false;
1466
1467 lockdep_assert_held(&mvm->mutex);
1468
1469 spin_lock_bh(&mvm->d0i3_tx_lock);
1470
1471 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1472 goto out;
1473
1474 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1475
1476 /* get the sta in order to update seq numbers and re-enqueue skbs */
1477 sta = rcu_dereference_protected(
1478 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1479 lockdep_is_held(&mvm->mutex));
1480
1481 if (IS_ERR_OR_NULL(sta)) {
1482 sta = NULL;
1483 goto out;
1484 }
1485
1486 if (mvm->d0i3_offloading && qos_seq) {
1487 /* update qos seq numbers if offloading was enabled */
1488 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1489 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1490 u16 seq = le16_to_cpu(qos_seq[i]);
1491 /* firmware stores last-used one, we store next one */
1492 seq += 0x10;
1493 mvm_ap_sta->tid_data[i].seq_number = seq;
1494 }
1495 }
1496 out:
1497 /* re-enqueue (or drop) all packets */
1498 while (!skb_queue_empty(&mvm->d0i3_tx)) {
1499 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1500
1501 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1502 ieee80211_free_txskb(mvm->hw, skb);
1503
1504 /* if the skb_queue is not empty, we need to wake queues */
1505 wake_queues = true;
1506 }
1507 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1508 wake_up(&mvm->d0i3_exit_waitq);
1509 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1510 if (wake_queues)
1511 ieee80211_wake_queues(mvm->hw);
1512
1513 spin_unlock_bh(&mvm->d0i3_tx_lock);
1514 }
1515
1516 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1517 {
1518 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1519 struct iwl_host_cmd get_status_cmd = {
1520 .id = WOWLAN_GET_STATUSES,
1521 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1522 };
1523 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1524 .mvm = mvm,
1525 };
1526
1527 struct iwl_wowlan_status *status;
1528 int ret;
1529 u32 wakeup_reasons = 0;
1530 __le16 *qos_seq = NULL;
1531
1532 mutex_lock(&mvm->mutex);
1533 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1534 if (ret)
1535 goto out;
1536
1537 if (!get_status_cmd.resp_pkt)
1538 goto out;
1539
1540 status = (void *)get_status_cmd.resp_pkt->data;
1541 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1542 qos_seq = status->qos_seq_ctr;
1543
1544 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1545
1546 iter_data.wakeup_reasons = wakeup_reasons;
1547 iter_data.status = status;
1548 ieee80211_iterate_active_interfaces(mvm->hw,
1549 IEEE80211_IFACE_ITER_NORMAL,
1550 iwl_mvm_d0i3_exit_work_iter,
1551 &iter_data);
1552 out:
1553 iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1554
1555 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1556 wakeup_reasons);
1557
1558 /* qos_seq might point inside resp_pkt, so free it only now */
1559 if (get_status_cmd.resp_pkt)
1560 iwl_free_resp(&get_status_cmd);
1561
1562 /* the FW might have updated the regdomain */
1563 iwl_mvm_update_changed_regdom(mvm);
1564
1565 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1566 mutex_unlock(&mvm->mutex);
1567 }
1568
1569 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1570 {
1571 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1572 CMD_WAKE_UP_TRANS;
1573 int ret;
1574
1575 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1576
1577 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1578 return -EINVAL;
1579
1580 mutex_lock(&mvm->d0i3_suspend_mutex);
1581 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1582 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1583 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1584 mutex_unlock(&mvm->d0i3_suspend_mutex);
1585 return 0;
1586 }
1587 mutex_unlock(&mvm->d0i3_suspend_mutex);
1588
1589 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1590 if (ret)
1591 goto out;
1592
1593 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1594 IEEE80211_IFACE_ITER_NORMAL,
1595 iwl_mvm_exit_d0i3_iterator,
1596 mvm);
1597 out:
1598 schedule_work(&mvm->d0i3_exit_work);
1599 return ret;
1600 }
1601
1602 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1603 {
1604 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1605
1606 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1607 return _iwl_mvm_exit_d0i3(mvm);
1608 }
1609
1610 #define IWL_MVM_COMMON_OPS \
1611 /* these could be differentiated */ \
1612 .async_cb = iwl_mvm_async_cb, \
1613 .queue_full = iwl_mvm_stop_sw_queue, \
1614 .queue_not_full = iwl_mvm_wake_sw_queue, \
1615 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
1616 .free_skb = iwl_mvm_free_skb, \
1617 .nic_error = iwl_mvm_nic_error, \
1618 .cmd_queue_full = iwl_mvm_cmd_queue_full, \
1619 .nic_config = iwl_mvm_nic_config, \
1620 .enter_d0i3 = iwl_mvm_enter_d0i3, \
1621 .exit_d0i3 = iwl_mvm_exit_d0i3, \
1622 /* as we only register one, these MUST be common! */ \
1623 .start = iwl_op_mode_mvm_start, \
1624 .stop = iwl_op_mode_mvm_stop
1625
1626 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1627 IWL_MVM_COMMON_OPS,
1628 .rx = iwl_mvm_rx,
1629 };
1630
1631 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1632 struct napi_struct *napi,
1633 struct iwl_rx_cmd_buffer *rxb,
1634 unsigned int queue)
1635 {
1636 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1637 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1638
1639 if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
1640 iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
1641 else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION &&
1642 pkt->hdr.group_id == DATA_PATH_GROUP))
1643 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1644 else
1645 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1646 }
1647
1648 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1649 IWL_MVM_COMMON_OPS,
1650 .rx = iwl_mvm_rx_mq,
1651 .rx_rss = iwl_mvm_rx_mq_rss,
1652 };
Linux kernel - Deliverables
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