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Merge tag 'gpio-v4.6-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux...
[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_LOCKED),
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_phy_names[] = {
425 HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
426 HCMD_NAME(CTDP_CONFIG_CMD),
427 HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
428 HCMD_NAME(CT_KILL_NOTIFICATION),
429 HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
430 };
431
432 /* Please keep this array *SORTED* by hex value.
433 * Access is done through binary search
434 */
435 static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
436 HCMD_NAME(UPDATE_MU_GROUPS_CMD),
437 HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
438 HCMD_NAME(MU_GROUP_MGMT_NOTIF),
439 HCMD_NAME(RX_QUEUES_NOTIFICATION),
440 };
441
442 /* Please keep this array *SORTED* by hex value.
443 * Access is done through binary search
444 */
445 static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
446 HCMD_NAME(STORED_BEACON_NTF),
447 };
448
449 static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
450 [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
451 [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
452 [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
453 [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
454 [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
455 };
456
457 /* this forward declaration can avoid to export the function */
458 static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
459 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
460
461 static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
462 {
463 const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
464
465 if (!pwr_tx_backoff)
466 return 0;
467
468 while (pwr_tx_backoff->pwr) {
469 if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
470 return pwr_tx_backoff->backoff;
471
472 pwr_tx_backoff++;
473 }
474
475 return 0;
476 }
477
478 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
479
480 static struct iwl_op_mode *
481 iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
482 const struct iwl_fw *fw, struct dentry *dbgfs_dir)
483 {
484 struct ieee80211_hw *hw;
485 struct iwl_op_mode *op_mode;
486 struct iwl_mvm *mvm;
487 struct iwl_trans_config trans_cfg = {};
488 static const u8 no_reclaim_cmds[] = {
489 TX_CMD,
490 };
491 int err, scan_size;
492 u32 min_backoff;
493
494 /*
495 * We use IWL_MVM_STATION_COUNT to check the validity of the station
496 * index all over the driver - check that its value corresponds to the
497 * array size.
498 */
499 BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
500
501 /********************************
502 * 1. Allocating and configuring HW data
503 ********************************/
504 hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
505 sizeof(struct iwl_mvm),
506 &iwl_mvm_hw_ops);
507 if (!hw)
508 return NULL;
509
510 if (cfg->max_rx_agg_size)
511 hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
512
513 if (cfg->max_tx_agg_size)
514 hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
515
516 op_mode = hw->priv;
517
518 mvm = IWL_OP_MODE_GET_MVM(op_mode);
519 mvm->dev = trans->dev;
520 mvm->trans = trans;
521 mvm->cfg = cfg;
522 mvm->fw = fw;
523 mvm->hw = hw;
524
525 if (iwl_mvm_has_new_rx_api(mvm)) {
526 op_mode->ops = &iwl_mvm_ops_mq;
527 trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
528 } else {
529 op_mode->ops = &iwl_mvm_ops;
530 trans->rx_mpdu_cmd_hdr_size =
531 sizeof(struct iwl_rx_mpdu_res_start);
532
533 if (WARN_ON(trans->num_rx_queues > 1))
534 goto out_free;
535 }
536
537 mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
538
539 mvm->aux_queue = 15;
540 mvm->first_agg_queue = 16;
541 mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
542 if (mvm->cfg->base_params->num_of_queues == 16) {
543 mvm->aux_queue = 11;
544 mvm->first_agg_queue = 12;
545 }
546 mvm->sf_state = SF_UNINIT;
547 mvm->cur_ucode = IWL_UCODE_INIT;
548 mvm->drop_bcn_ap_mode = true;
549
550 mutex_init(&mvm->mutex);
551 mutex_init(&mvm->d0i3_suspend_mutex);
552 spin_lock_init(&mvm->async_handlers_lock);
553 INIT_LIST_HEAD(&mvm->time_event_list);
554 INIT_LIST_HEAD(&mvm->aux_roc_te_list);
555 INIT_LIST_HEAD(&mvm->async_handlers_list);
556 spin_lock_init(&mvm->time_event_lock);
557 spin_lock_init(&mvm->queue_info_lock);
558
559 INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
560 INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
561 INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
562 INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
563 INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
564 INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
565
566 spin_lock_init(&mvm->d0i3_tx_lock);
567 spin_lock_init(&mvm->refs_lock);
568 skb_queue_head_init(&mvm->d0i3_tx);
569 init_waitqueue_head(&mvm->d0i3_exit_waitq);
570
571 SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
572
573 /*
574 * Populate the state variables that the transport layer needs
575 * to know about.
576 */
577 trans_cfg.op_mode = op_mode;
578 trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
579 trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
580 switch (iwlwifi_mod_params.amsdu_size) {
581 case IWL_AMSDU_4K:
582 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
583 break;
584 case IWL_AMSDU_8K:
585 trans_cfg.rx_buf_size = IWL_AMSDU_8K;
586 break;
587 case IWL_AMSDU_12K:
588 trans_cfg.rx_buf_size = IWL_AMSDU_12K;
589 break;
590 default:
591 pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
592 iwlwifi_mod_params.amsdu_size);
593 trans_cfg.rx_buf_size = IWL_AMSDU_4K;
594 }
595 trans_cfg.wide_cmd_header = fw_has_api(&mvm->fw->ucode_capa,
596 IWL_UCODE_TLV_API_WIDE_CMD_HDR);
597
598 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_DW_BC_TABLE)
599 trans_cfg.bc_table_dword = true;
600
601 trans_cfg.command_groups = iwl_mvm_groups;
602 trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
603
604 trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
605 trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
606 trans_cfg.scd_set_active = true;
607
608 trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
609 trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
610
611 /* Set a short watchdog for the command queue */
612 trans_cfg.cmd_q_wdg_timeout =
613 iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
614
615 snprintf(mvm->hw->wiphy->fw_version,
616 sizeof(mvm->hw->wiphy->fw_version),
617 "%s", fw->fw_version);
618
619 /* Configure transport layer */
620 iwl_trans_configure(mvm->trans, &trans_cfg);
621
622 trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
623 trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
624 trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
625 memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
626 sizeof(trans->dbg_conf_tlv));
627 trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
628
629 /* set up notification wait support */
630 iwl_notification_wait_init(&mvm->notif_wait);
631
632 /* Init phy db */
633 mvm->phy_db = iwl_phy_db_init(trans);
634 if (!mvm->phy_db) {
635 IWL_ERR(mvm, "Cannot init phy_db\n");
636 goto out_free;
637 }
638
639 IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
640 mvm->cfg->name, mvm->trans->hw_rev);
641
642 if (iwlwifi_mod_params.nvm_file)
643 mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
644 else
645 IWL_DEBUG_EEPROM(mvm->trans->dev,
646 "working without external nvm file\n");
647
648 if (WARN(cfg->no_power_up_nic_in_init && !mvm->nvm_file_name,
649 "not allowing power-up and not having nvm_file\n"))
650 goto out_free;
651
652 /*
653 * Even if nvm exists in the nvm_file driver should read again the nvm
654 * from the nic because there might be entries that exist in the OTP
655 * and not in the file.
656 * for nics with no_power_up_nic_in_init: rely completley on nvm_file
657 */
658 if (cfg->no_power_up_nic_in_init && mvm->nvm_file_name) {
659 err = iwl_nvm_init(mvm, false);
660 if (err)
661 goto out_free;
662 } else {
663 err = iwl_trans_start_hw(mvm->trans);
664 if (err)
665 goto out_free;
666
667 mutex_lock(&mvm->mutex);
668 iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
669 err = iwl_run_init_mvm_ucode(mvm, true);
670 if (!err || !iwlmvm_mod_params.init_dbg)
671 iwl_mvm_stop_device(mvm);
672 iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
673 mutex_unlock(&mvm->mutex);
674 /* returns 0 if successful, 1 if success but in rfkill */
675 if (err < 0 && !iwlmvm_mod_params.init_dbg) {
676 IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
677 goto out_free;
678 }
679 }
680
681 scan_size = iwl_mvm_scan_size(mvm);
682
683 mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
684 if (!mvm->scan_cmd)
685 goto out_free;
686
687 /* Set EBS as successful as long as not stated otherwise by the FW. */
688 mvm->last_ebs_successful = true;
689
690 err = iwl_mvm_mac_setup_register(mvm);
691 if (err)
692 goto out_free;
693
694 min_backoff = calc_min_backoff(trans, cfg);
695 iwl_mvm_thermal_initialize(mvm, min_backoff);
696
697 err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
698 if (err)
699 goto out_unregister;
700
701 memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
702
703 /* The transport always starts with a taken reference, we can
704 * release it now if d0i3 is supported */
705 if (iwl_mvm_is_d0i3_supported(mvm))
706 iwl_trans_unref(mvm->trans);
707
708 iwl_mvm_tof_init(mvm);
709
710 /* init RSS hash key */
711 get_random_bytes(mvm->secret_key, sizeof(mvm->secret_key));
712
713 return op_mode;
714
715 out_unregister:
716 ieee80211_unregister_hw(mvm->hw);
717 iwl_mvm_leds_exit(mvm);
718 iwl_mvm_thermal_exit(mvm);
719 out_free:
720 flush_delayed_work(&mvm->fw_dump_wk);
721 iwl_phy_db_free(mvm->phy_db);
722 kfree(mvm->scan_cmd);
723 if (!cfg->no_power_up_nic_in_init || !mvm->nvm_file_name)
724 iwl_trans_op_mode_leave(trans);
725 ieee80211_free_hw(mvm->hw);
726 return NULL;
727 }
728
729 static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
730 {
731 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
732 int i;
733
734 /* If d0i3 is supported, we have released the reference that
735 * the transport started with, so we should take it back now
736 * that we are leaving.
737 */
738 if (iwl_mvm_is_d0i3_supported(mvm))
739 iwl_trans_ref(mvm->trans);
740
741 iwl_mvm_leds_exit(mvm);
742
743 iwl_mvm_thermal_exit(mvm);
744
745 ieee80211_unregister_hw(mvm->hw);
746
747 kfree(mvm->scan_cmd);
748 kfree(mvm->mcast_filter_cmd);
749 mvm->mcast_filter_cmd = NULL;
750
751 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
752 kfree(mvm->d3_resume_sram);
753 #endif
754
755 iwl_trans_op_mode_leave(mvm->trans);
756
757 iwl_phy_db_free(mvm->phy_db);
758 mvm->phy_db = NULL;
759
760 iwl_free_nvm_data(mvm->nvm_data);
761 for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
762 kfree(mvm->nvm_sections[i].data);
763
764 iwl_mvm_tof_clean(mvm);
765
766 ieee80211_free_hw(mvm->hw);
767 }
768
769 struct iwl_async_handler_entry {
770 struct list_head list;
771 struct iwl_rx_cmd_buffer rxb;
772 enum iwl_rx_handler_context context;
773 void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
774 };
775
776 void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
777 {
778 struct iwl_async_handler_entry *entry, *tmp;
779
780 spin_lock_bh(&mvm->async_handlers_lock);
781 list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
782 iwl_free_rxb(&entry->rxb);
783 list_del(&entry->list);
784 kfree(entry);
785 }
786 spin_unlock_bh(&mvm->async_handlers_lock);
787 }
788
789 static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
790 {
791 struct iwl_mvm *mvm =
792 container_of(wk, struct iwl_mvm, async_handlers_wk);
793 struct iwl_async_handler_entry *entry, *tmp;
794 struct list_head local_list;
795
796 INIT_LIST_HEAD(&local_list);
797
798 /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
799
800 /*
801 * Sync with Rx path with a lock. Remove all the entries from this list,
802 * add them to a local one (lock free), and then handle them.
803 */
804 spin_lock_bh(&mvm->async_handlers_lock);
805 list_splice_init(&mvm->async_handlers_list, &local_list);
806 spin_unlock_bh(&mvm->async_handlers_lock);
807
808 list_for_each_entry_safe(entry, tmp, &local_list, list) {
809 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
810 mutex_lock(&mvm->mutex);
811 entry->fn(mvm, &entry->rxb);
812 iwl_free_rxb(&entry->rxb);
813 list_del(&entry->list);
814 if (entry->context == RX_HANDLER_ASYNC_LOCKED)
815 mutex_unlock(&mvm->mutex);
816 kfree(entry);
817 }
818 }
819
820 static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
821 struct iwl_rx_packet *pkt)
822 {
823 struct iwl_fw_dbg_trigger_tlv *trig;
824 struct iwl_fw_dbg_trigger_cmd *cmds_trig;
825 int i;
826
827 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
828 return;
829
830 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
831 cmds_trig = (void *)trig->data;
832
833 if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
834 return;
835
836 for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
837 /* don't collect on CMD 0 */
838 if (!cmds_trig->cmds[i].cmd_id)
839 break;
840
841 if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
842 cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
843 continue;
844
845 iwl_mvm_fw_dbg_collect_trig(mvm, trig,
846 "CMD 0x%02x.%02x received",
847 pkt->hdr.group_id, pkt->hdr.cmd);
848 break;
849 }
850 }
851
852 static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
853 struct iwl_rx_cmd_buffer *rxb,
854 struct iwl_rx_packet *pkt)
855 {
856 int i;
857
858 iwl_mvm_rx_check_trigger(mvm, pkt);
859
860 /*
861 * Do the notification wait before RX handlers so
862 * even if the RX handler consumes the RXB we have
863 * access to it in the notification wait entry.
864 */
865 iwl_notification_wait_notify(&mvm->notif_wait, pkt);
866
867 for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
868 const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
869 struct iwl_async_handler_entry *entry;
870
871 if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
872 continue;
873
874 if (rx_h->context == RX_HANDLER_SYNC) {
875 rx_h->fn(mvm, rxb);
876 return;
877 }
878
879 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
880 /* we can't do much... */
881 if (!entry)
882 return;
883
884 entry->rxb._page = rxb_steal_page(rxb);
885 entry->rxb._offset = rxb->_offset;
886 entry->rxb._rx_page_order = rxb->_rx_page_order;
887 entry->fn = rx_h->fn;
888 entry->context = rx_h->context;
889 spin_lock(&mvm->async_handlers_lock);
890 list_add_tail(&entry->list, &mvm->async_handlers_list);
891 spin_unlock(&mvm->async_handlers_lock);
892 schedule_work(&mvm->async_handlers_wk);
893 break;
894 }
895 }
896
897 static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
898 struct napi_struct *napi,
899 struct iwl_rx_cmd_buffer *rxb)
900 {
901 struct iwl_rx_packet *pkt = rxb_addr(rxb);
902 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
903
904 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
905 iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
906 else if (pkt->hdr.cmd == FRAME_RELEASE)
907 iwl_mvm_rx_frame_release(mvm, rxb, 0);
908 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
909 iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
910 else
911 iwl_mvm_rx_common(mvm, rxb, pkt);
912 }
913
914 static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
915 struct napi_struct *napi,
916 struct iwl_rx_cmd_buffer *rxb)
917 {
918 struct iwl_rx_packet *pkt = rxb_addr(rxb);
919 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
920
921 if (likely(pkt->hdr.cmd == REPLY_RX_MPDU_CMD))
922 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
923 else if (pkt->hdr.cmd == REPLY_RX_PHY_CMD)
924 iwl_mvm_rx_phy_cmd_mq(mvm, rxb);
925 else if (unlikely(pkt->hdr.group_id == DATA_PATH_GROUP &&
926 pkt->hdr.cmd == RX_QUEUES_NOTIFICATION))
927 iwl_mvm_rx_queue_notif(mvm, rxb, 0);
928 else
929 iwl_mvm_rx_common(mvm, rxb, pkt);
930 }
931
932 void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
933 {
934 int q;
935
936 if (WARN_ON_ONCE(!mq))
937 return;
938
939 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
940 if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
941 IWL_DEBUG_TX_QUEUES(mvm,
942 "mac80211 %d already stopped\n", q);
943 continue;
944 }
945
946 ieee80211_stop_queue(mvm->hw, q);
947 }
948 }
949
950 static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
951 const struct iwl_device_cmd *cmd)
952 {
953 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
954
955 /*
956 * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
957 * commands that need to block the Tx queues.
958 */
959 iwl_trans_block_txq_ptrs(mvm->trans, false);
960 }
961
962 static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
963 {
964 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
965 unsigned long mq;
966
967 spin_lock_bh(&mvm->queue_info_lock);
968 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
969 spin_unlock_bh(&mvm->queue_info_lock);
970
971 iwl_mvm_stop_mac_queues(mvm, mq);
972 }
973
974 void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
975 {
976 int q;
977
978 if (WARN_ON_ONCE(!mq))
979 return;
980
981 for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
982 if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
983 IWL_DEBUG_TX_QUEUES(mvm,
984 "mac80211 %d still stopped\n", q);
985 continue;
986 }
987
988 ieee80211_wake_queue(mvm->hw, q);
989 }
990 }
991
992 static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
993 {
994 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
995 unsigned long mq;
996
997 spin_lock_bh(&mvm->queue_info_lock);
998 mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
999 spin_unlock_bh(&mvm->queue_info_lock);
1000
1001 iwl_mvm_start_mac_queues(mvm, mq);
1002 }
1003
1004 void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
1005 {
1006 if (state)
1007 set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1008 else
1009 clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
1010
1011 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1012 }
1013
1014 static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
1015 {
1016 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1017 bool calibrating = ACCESS_ONCE(mvm->calibrating);
1018
1019 if (state)
1020 set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1021 else
1022 clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
1023
1024 wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
1025
1026 /* iwl_run_init_mvm_ucode is waiting for results, abort it */
1027 if (calibrating)
1028 iwl_abort_notification_waits(&mvm->notif_wait);
1029
1030 /*
1031 * Stop the device if we run OPERATIONAL firmware or if we are in the
1032 * middle of the calibrations.
1033 */
1034 return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
1035 }
1036
1037 static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
1038 {
1039 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1040 struct ieee80211_tx_info *info;
1041
1042 info = IEEE80211_SKB_CB(skb);
1043 iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
1044 ieee80211_free_txskb(mvm->hw, skb);
1045 }
1046
1047 struct iwl_mvm_reprobe {
1048 struct device *dev;
1049 struct work_struct work;
1050 };
1051
1052 static void iwl_mvm_reprobe_wk(struct work_struct *wk)
1053 {
1054 struct iwl_mvm_reprobe *reprobe;
1055
1056 reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
1057 if (device_reprobe(reprobe->dev))
1058 dev_err(reprobe->dev, "reprobe failed!\n");
1059 kfree(reprobe);
1060 module_put(THIS_MODULE);
1061 }
1062
1063 static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
1064 {
1065 struct iwl_mvm *mvm =
1066 container_of(work, struct iwl_mvm, fw_dump_wk.work);
1067
1068 if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
1069 return;
1070
1071 mutex_lock(&mvm->mutex);
1072
1073 /* stop recording */
1074 if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
1075 iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
1076 } else {
1077 iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
1078 /* wait before we collect the data till the DBGC stop */
1079 udelay(100);
1080 }
1081
1082 iwl_mvm_fw_error_dump(mvm);
1083
1084 /* start recording again if the firmware is not crashed */
1085 WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
1086 mvm->fw->dbg_dest_tlv &&
1087 iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
1088
1089 mutex_unlock(&mvm->mutex);
1090
1091 iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
1092 }
1093
1094 void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
1095 {
1096 iwl_abort_notification_waits(&mvm->notif_wait);
1097
1098 /*
1099 * This is a bit racy, but worst case we tell mac80211 about
1100 * a stopped/aborted scan when that was already done which
1101 * is not a problem. It is necessary to abort any os scan
1102 * here because mac80211 requires having the scan cleared
1103 * before restarting.
1104 * We'll reset the scan_status to NONE in restart cleanup in
1105 * the next start() call from mac80211. If restart isn't called
1106 * (no fw restart) scan status will stay busy.
1107 */
1108 iwl_mvm_report_scan_aborted(mvm);
1109
1110 /*
1111 * If we're restarting already, don't cycle restarts.
1112 * If INIT fw asserted, it will likely fail again.
1113 * If WoWLAN fw asserted, don't restart either, mac80211
1114 * can't recover this since we're already half suspended.
1115 */
1116 if (!mvm->restart_fw && fw_error) {
1117 iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
1118 NULL);
1119 } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1120 &mvm->status)) {
1121 struct iwl_mvm_reprobe *reprobe;
1122
1123 IWL_ERR(mvm,
1124 "Firmware error during reconfiguration - reprobe!\n");
1125
1126 /*
1127 * get a module reference to avoid doing this while unloading
1128 * anyway and to avoid scheduling a work with code that's
1129 * being removed.
1130 */
1131 if (!try_module_get(THIS_MODULE)) {
1132 IWL_ERR(mvm, "Module is being unloaded - abort\n");
1133 return;
1134 }
1135
1136 reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
1137 if (!reprobe) {
1138 module_put(THIS_MODULE);
1139 return;
1140 }
1141 reprobe->dev = mvm->trans->dev;
1142 INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
1143 schedule_work(&reprobe->work);
1144 } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
1145 /* don't let the transport/FW power down */
1146 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1147
1148 if (fw_error && mvm->restart_fw > 0)
1149 mvm->restart_fw--;
1150 ieee80211_restart_hw(mvm->hw);
1151 }
1152 }
1153
1154 static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
1155 {
1156 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1157
1158 iwl_mvm_dump_nic_error_log(mvm);
1159
1160 iwl_mvm_nic_restart(mvm, true);
1161 }
1162
1163 static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
1164 {
1165 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1166
1167 WARN_ON(1);
1168 iwl_mvm_nic_restart(mvm, true);
1169 }
1170
1171 struct iwl_d0i3_iter_data {
1172 struct iwl_mvm *mvm;
1173 struct ieee80211_vif *connected_vif;
1174 u8 ap_sta_id;
1175 u8 vif_count;
1176 u8 offloading_tid;
1177 bool disable_offloading;
1178 };
1179
1180 static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
1181 struct ieee80211_vif *vif,
1182 struct iwl_d0i3_iter_data *iter_data)
1183 {
1184 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1185 struct ieee80211_sta *ap_sta;
1186 struct iwl_mvm_sta *mvmsta;
1187 u32 available_tids = 0;
1188 u8 tid;
1189
1190 if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
1191 mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
1192 return false;
1193
1194 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id]);
1195 if (IS_ERR_OR_NULL(ap_sta))
1196 return false;
1197
1198 mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
1199 spin_lock_bh(&mvmsta->lock);
1200 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1201 struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
1202
1203 /*
1204 * in case of pending tx packets, don't use this tid
1205 * for offloading in order to prevent reuse of the same
1206 * qos seq counters.
1207 */
1208 if (iwl_mvm_tid_queued(tid_data))
1209 continue;
1210
1211 if (tid_data->state != IWL_AGG_OFF)
1212 continue;
1213
1214 available_tids |= BIT(tid);
1215 }
1216 spin_unlock_bh(&mvmsta->lock);
1217
1218 /*
1219 * disallow protocol offloading if we have no available tid
1220 * (with no pending frames and no active aggregation,
1221 * as we don't handle "holes" properly - the scheduler needs the
1222 * frame's seq number and TFD index to match)
1223 */
1224 if (!available_tids)
1225 return true;
1226
1227 /* for simplicity, just use the first available tid */
1228 iter_data->offloading_tid = ffs(available_tids) - 1;
1229 return false;
1230 }
1231
1232 static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
1233 struct ieee80211_vif *vif)
1234 {
1235 struct iwl_d0i3_iter_data *data = _data;
1236 struct iwl_mvm *mvm = data->mvm;
1237 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1238 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1239
1240 IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
1241 if (vif->type != NL80211_IFTYPE_STATION ||
1242 !vif->bss_conf.assoc)
1243 return;
1244
1245 /*
1246 * in case of pending tx packets or active aggregations,
1247 * avoid offloading features in order to prevent reuse of
1248 * the same qos seq counters.
1249 */
1250 if (iwl_mvm_disallow_offloading(mvm, vif, data))
1251 data->disable_offloading = true;
1252
1253 iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
1254 iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
1255 false, flags);
1256
1257 /*
1258 * on init/association, mvm already configures POWER_TABLE_CMD
1259 * and REPLY_MCAST_FILTER_CMD, so currently don't
1260 * reconfigure them (we might want to use different
1261 * params later on, though).
1262 */
1263 data->ap_sta_id = mvmvif->ap_sta_id;
1264 data->vif_count++;
1265
1266 /*
1267 * no new commands can be sent at this stage, so it's safe
1268 * to save the vif pointer during d0i3 entrance.
1269 */
1270 data->connected_vif = vif;
1271 }
1272
1273 static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
1274 struct iwl_wowlan_config_cmd *cmd,
1275 struct iwl_d0i3_iter_data *iter_data)
1276 {
1277 struct ieee80211_sta *ap_sta;
1278 struct iwl_mvm_sta *mvm_ap_sta;
1279
1280 if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
1281 return;
1282
1283 rcu_read_lock();
1284
1285 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
1286 if (IS_ERR_OR_NULL(ap_sta))
1287 goto out;
1288
1289 mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
1290 cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
1291 cmd->offloading_tid = iter_data->offloading_tid;
1292 cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
1293 ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
1294 /*
1295 * The d0i3 uCode takes care of the nonqos counters,
1296 * so configure only the qos seq ones.
1297 */
1298 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
1299 out:
1300 rcu_read_unlock();
1301 }
1302
1303 int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
1304 {
1305 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1306 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
1307 int ret;
1308 struct iwl_d0i3_iter_data d0i3_iter_data = {
1309 .mvm = mvm,
1310 };
1311 struct iwl_wowlan_config_cmd wowlan_config_cmd = {
1312 .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
1313 IWL_WOWLAN_WAKEUP_BEACON_MISS |
1314 IWL_WOWLAN_WAKEUP_LINK_CHANGE),
1315 };
1316 struct iwl_d3_manager_config d3_cfg_cmd = {
1317 .min_sleep_time = cpu_to_le32(1000),
1318 .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
1319 };
1320
1321 IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
1322
1323 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1324 return -EINVAL;
1325
1326 set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1327
1328 /*
1329 * iwl_mvm_ref_sync takes a reference before checking the flag.
1330 * so by checking there is no held reference we prevent a state
1331 * in which iwl_mvm_ref_sync continues successfully while we
1332 * configure the firmware to enter d0i3
1333 */
1334 if (iwl_mvm_ref_taken(mvm)) {
1335 IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
1336 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1337 wake_up(&mvm->d0i3_exit_waitq);
1338 return 1;
1339 }
1340
1341 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1342 IEEE80211_IFACE_ITER_NORMAL,
1343 iwl_mvm_enter_d0i3_iterator,
1344 &d0i3_iter_data);
1345 if (d0i3_iter_data.vif_count == 1) {
1346 mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
1347 mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
1348 } else {
1349 WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
1350 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1351 mvm->d0i3_offloading = false;
1352 }
1353
1354 /* make sure we have no running tx while configuring the seqno */
1355 synchronize_net();
1356
1357 /* Flush the hw queues, in case something got queued during entry */
1358 ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
1359 if (ret)
1360 return ret;
1361
1362 /* configure wowlan configuration only if needed */
1363 if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
1364 /* wake on beacons only if beacon storing isn't supported */
1365 if (!fw_has_capa(&mvm->fw->ucode_capa,
1366 IWL_UCODE_TLV_CAPA_BEACON_STORING))
1367 wowlan_config_cmd.wakeup_filter |=
1368 cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
1369
1370 iwl_mvm_wowlan_config_key_params(mvm,
1371 d0i3_iter_data.connected_vif,
1372 true, flags);
1373
1374 iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
1375 &d0i3_iter_data);
1376
1377 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
1378 sizeof(wowlan_config_cmd),
1379 &wowlan_config_cmd);
1380 if (ret)
1381 return ret;
1382 }
1383
1384 return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
1385 flags | CMD_MAKE_TRANS_IDLE,
1386 sizeof(d3_cfg_cmd), &d3_cfg_cmd);
1387 }
1388
1389 static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
1390 struct ieee80211_vif *vif)
1391 {
1392 struct iwl_mvm *mvm = _data;
1393 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
1394
1395 IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
1396 if (vif->type != NL80211_IFTYPE_STATION ||
1397 !vif->bss_conf.assoc)
1398 return;
1399
1400 iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
1401 }
1402
1403 struct iwl_mvm_d0i3_exit_work_iter_data {
1404 struct iwl_mvm *mvm;
1405 struct iwl_wowlan_status *status;
1406 u32 wakeup_reasons;
1407 };
1408
1409 static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
1410 struct ieee80211_vif *vif)
1411 {
1412 struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
1413 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1414 u32 reasons = data->wakeup_reasons;
1415
1416 /* consider only the relevant station interface */
1417 if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
1418 data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
1419 return;
1420
1421 if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
1422 iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
1423 else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
1424 ieee80211_beacon_loss(vif);
1425 else
1426 iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
1427 }
1428
1429 void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
1430 {
1431 struct ieee80211_sta *sta = NULL;
1432 struct iwl_mvm_sta *mvm_ap_sta;
1433 int i;
1434 bool wake_queues = false;
1435
1436 lockdep_assert_held(&mvm->mutex);
1437
1438 spin_lock_bh(&mvm->d0i3_tx_lock);
1439
1440 if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
1441 goto out;
1442
1443 IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
1444
1445 /* get the sta in order to update seq numbers and re-enqueue skbs */
1446 sta = rcu_dereference_protected(
1447 mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
1448 lockdep_is_held(&mvm->mutex));
1449
1450 if (IS_ERR_OR_NULL(sta)) {
1451 sta = NULL;
1452 goto out;
1453 }
1454
1455 if (mvm->d0i3_offloading && qos_seq) {
1456 /* update qos seq numbers if offloading was enabled */
1457 mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
1458 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1459 u16 seq = le16_to_cpu(qos_seq[i]);
1460 /* firmware stores last-used one, we store next one */
1461 seq += 0x10;
1462 mvm_ap_sta->tid_data[i].seq_number = seq;
1463 }
1464 }
1465 out:
1466 /* re-enqueue (or drop) all packets */
1467 while (!skb_queue_empty(&mvm->d0i3_tx)) {
1468 struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
1469
1470 if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
1471 ieee80211_free_txskb(mvm->hw, skb);
1472
1473 /* if the skb_queue is not empty, we need to wake queues */
1474 wake_queues = true;
1475 }
1476 clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
1477 wake_up(&mvm->d0i3_exit_waitq);
1478 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
1479 if (wake_queues)
1480 ieee80211_wake_queues(mvm->hw);
1481
1482 spin_unlock_bh(&mvm->d0i3_tx_lock);
1483 }
1484
1485 static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
1486 {
1487 struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
1488 struct iwl_host_cmd get_status_cmd = {
1489 .id = WOWLAN_GET_STATUSES,
1490 .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
1491 };
1492 struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
1493 .mvm = mvm,
1494 };
1495
1496 struct iwl_wowlan_status *status;
1497 int ret;
1498 u32 wakeup_reasons = 0;
1499 __le16 *qos_seq = NULL;
1500
1501 mutex_lock(&mvm->mutex);
1502 ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
1503 if (ret)
1504 goto out;
1505
1506 if (!get_status_cmd.resp_pkt)
1507 goto out;
1508
1509 status = (void *)get_status_cmd.resp_pkt->data;
1510 wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
1511 qos_seq = status->qos_seq_ctr;
1512
1513 IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
1514
1515 iter_data.wakeup_reasons = wakeup_reasons;
1516 iter_data.status = status;
1517 ieee80211_iterate_active_interfaces(mvm->hw,
1518 IEEE80211_IFACE_ITER_NORMAL,
1519 iwl_mvm_d0i3_exit_work_iter,
1520 &iter_data);
1521 out:
1522 iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
1523
1524 IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
1525 wakeup_reasons);
1526
1527 /* qos_seq might point inside resp_pkt, so free it only now */
1528 if (get_status_cmd.resp_pkt)
1529 iwl_free_resp(&get_status_cmd);
1530
1531 /* the FW might have updated the regdomain */
1532 iwl_mvm_update_changed_regdom(mvm);
1533
1534 iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
1535 mutex_unlock(&mvm->mutex);
1536 }
1537
1538 int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
1539 {
1540 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
1541 CMD_WAKE_UP_TRANS;
1542 int ret;
1543
1544 IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
1545
1546 if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
1547 return -EINVAL;
1548
1549 mutex_lock(&mvm->d0i3_suspend_mutex);
1550 if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
1551 IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
1552 __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
1553 mutex_unlock(&mvm->d0i3_suspend_mutex);
1554 return 0;
1555 }
1556 mutex_unlock(&mvm->d0i3_suspend_mutex);
1557
1558 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
1559 if (ret)
1560 goto out;
1561
1562 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1563 IEEE80211_IFACE_ITER_NORMAL,
1564 iwl_mvm_exit_d0i3_iterator,
1565 mvm);
1566 out:
1567 schedule_work(&mvm->d0i3_exit_work);
1568 return ret;
1569 }
1570
1571 int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
1572 {
1573 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1574
1575 iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
1576 return _iwl_mvm_exit_d0i3(mvm);
1577 }
1578
1579 #define IWL_MVM_COMMON_OPS \
1580 /* these could be differentiated */ \
1581 .async_cb = iwl_mvm_async_cb, \
1582 .queue_full = iwl_mvm_stop_sw_queue, \
1583 .queue_not_full = iwl_mvm_wake_sw_queue, \
1584 .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
1585 .free_skb = iwl_mvm_free_skb, \
1586 .nic_error = iwl_mvm_nic_error, \
1587 .cmd_queue_full = iwl_mvm_cmd_queue_full, \
1588 .nic_config = iwl_mvm_nic_config, \
1589 .enter_d0i3 = iwl_mvm_enter_d0i3, \
1590 .exit_d0i3 = iwl_mvm_exit_d0i3, \
1591 /* as we only register one, these MUST be common! */ \
1592 .start = iwl_op_mode_mvm_start, \
1593 .stop = iwl_op_mode_mvm_stop
1594
1595 static const struct iwl_op_mode_ops iwl_mvm_ops = {
1596 IWL_MVM_COMMON_OPS,
1597 .rx = iwl_mvm_rx,
1598 };
1599
1600 static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
1601 struct napi_struct *napi,
1602 struct iwl_rx_cmd_buffer *rxb,
1603 unsigned int queue)
1604 {
1605 struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
1606 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1607
1608 if (unlikely(pkt->hdr.cmd == FRAME_RELEASE))
1609 iwl_mvm_rx_frame_release(mvm, rxb, queue);
1610 else if (unlikely(pkt->hdr.cmd == RX_QUEUES_NOTIFICATION &&
1611 pkt->hdr.group_id == DATA_PATH_GROUP))
1612 iwl_mvm_rx_queue_notif(mvm, rxb, queue);
1613 else
1614 iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
1615 }
1616
1617 static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
1618 IWL_MVM_COMMON_OPS,
1619 .rx = iwl_mvm_rx_mq,
1620 .rx_rss = iwl_mvm_rx_mq_rss,
1621 };
Linux kernel - Deliverables
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