ops.c 50 KB

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  1. /******************************************************************************
  2. *
  3. * This file is provided under a dual BSD/GPLv2 license. When using or
  4. * redistributing this file, you may do so under either license.
  5. *
  6. * GPL LICENSE SUMMARY
  7. *
  8. * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  9. * 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. #include "iwl-notif-wait.h"
  70. #include "iwl-trans.h"
  71. #include "iwl-op-mode.h"
  72. #include "iwl-fw.h"
  73. #include "iwl-debug.h"
  74. #include "iwl-drv.h"
  75. #include "iwl-modparams.h"
  76. #include "mvm.h"
  77. #include "iwl-phy-db.h"
  78. #include "iwl-eeprom-parse.h"
  79. #include "iwl-csr.h"
  80. #include "iwl-io.h"
  81. #include "iwl-prph.h"
  82. #include "rs.h"
  83. #include "fw-api-scan.h"
  84. #include "time-event.h"
  85. #include "fw-dbg.h"
  86. #include "fw-api.h"
  87. #include "fw-api-scan.h"
  88. #define DRV_DESCRIPTION "The new Intel(R) wireless AGN driver for Linux"
  89. MODULE_DESCRIPTION(DRV_DESCRIPTION);
  90. MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  91. MODULE_LICENSE("GPL");
  92. static const struct iwl_op_mode_ops iwl_mvm_ops;
  93. static const struct iwl_op_mode_ops iwl_mvm_ops_mq;
  94. struct iwl_mvm_mod_params iwlmvm_mod_params = {
  95. .power_scheme = IWL_POWER_SCHEME_BPS,
  96. .tfd_q_hang_detect = true
  97. /* rest of fields are 0 by default */
  98. };
  99. module_param_named(init_dbg, iwlmvm_mod_params.init_dbg, bool, S_IRUGO);
  100. MODULE_PARM_DESC(init_dbg,
  101. "set to true to debug an ASSERT in INIT fw (default: false");
  102. module_param_named(power_scheme, iwlmvm_mod_params.power_scheme, int, S_IRUGO);
  103. MODULE_PARM_DESC(power_scheme,
  104. "power management scheme: 1-active, 2-balanced, 3-low power, default: 2");
  105. module_param_named(tfd_q_hang_detect, iwlmvm_mod_params.tfd_q_hang_detect,
  106. bool, S_IRUGO);
  107. MODULE_PARM_DESC(tfd_q_hang_detect,
  108. "TFD queues hang detection (default: true");
  109. /*
  110. * module init and exit functions
  111. */
  112. static int __init iwl_mvm_init(void)
  113. {
  114. int ret;
  115. ret = iwl_mvm_rate_control_register();
  116. if (ret) {
  117. pr_err("Unable to register rate control algorithm: %d\n", ret);
  118. return ret;
  119. }
  120. ret = iwl_opmode_register("iwlmvm", &iwl_mvm_ops);
  121. if (ret) {
  122. pr_err("Unable to register MVM op_mode: %d\n", ret);
  123. iwl_mvm_rate_control_unregister();
  124. }
  125. return ret;
  126. }
  127. module_init(iwl_mvm_init);
  128. static void __exit iwl_mvm_exit(void)
  129. {
  130. iwl_opmode_deregister("iwlmvm");
  131. iwl_mvm_rate_control_unregister();
  132. }
  133. module_exit(iwl_mvm_exit);
  134. static void iwl_mvm_nic_config(struct iwl_op_mode *op_mode)
  135. {
  136. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  137. u8 radio_cfg_type, radio_cfg_step, radio_cfg_dash;
  138. u32 reg_val = 0;
  139. u32 phy_config = iwl_mvm_get_phy_config(mvm);
  140. radio_cfg_type = (phy_config & FW_PHY_CFG_RADIO_TYPE) >>
  141. FW_PHY_CFG_RADIO_TYPE_POS;
  142. radio_cfg_step = (phy_config & FW_PHY_CFG_RADIO_STEP) >>
  143. FW_PHY_CFG_RADIO_STEP_POS;
  144. radio_cfg_dash = (phy_config & FW_PHY_CFG_RADIO_DASH) >>
  145. FW_PHY_CFG_RADIO_DASH_POS;
  146. /* SKU control */
  147. reg_val |= CSR_HW_REV_STEP(mvm->trans->hw_rev) <<
  148. CSR_HW_IF_CONFIG_REG_POS_MAC_STEP;
  149. reg_val |= CSR_HW_REV_DASH(mvm->trans->hw_rev) <<
  150. CSR_HW_IF_CONFIG_REG_POS_MAC_DASH;
  151. /* radio configuration */
  152. reg_val |= radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE;
  153. reg_val |= radio_cfg_step << CSR_HW_IF_CONFIG_REG_POS_PHY_STEP;
  154. reg_val |= radio_cfg_dash << CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
  155. WARN_ON((radio_cfg_type << CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE) &
  156. ~CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE);
  157. /*
  158. * TODO: Bits 7-8 of CSR in 8000 HW family set the ADC sampling, and
  159. * shouldn't be set to any non-zero value. The same is supposed to be
  160. * true of the other HW, but unsetting them (such as the 7260) causes
  161. * automatic tests to fail on seemingly unrelated errors. Need to
  162. * further investigate this, but for now we'll separate cases.
  163. */
  164. if (mvm->trans->cfg->device_family != IWL_DEVICE_FAMILY_8000)
  165. reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
  166. iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
  167. CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
  168. CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
  169. CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
  170. CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
  171. CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
  172. CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
  173. CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
  174. reg_val);
  175. IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
  176. radio_cfg_step, radio_cfg_dash);
  177. /*
  178. * W/A : NIC is stuck in a reset state after Early PCIe power off
  179. * (PCIe power is lost before PERST# is asserted), causing ME FW
  180. * to lose ownership and not being able to obtain it back.
  181. */
  182. if (!mvm->trans->cfg->apmg_not_supported)
  183. iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
  184. APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
  185. ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
  186. }
  187. /**
  188. * enum iwl_rx_handler_context context for Rx handler
  189. * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
  190. * which can't acquire mvm->mutex.
  191. * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
  192. * (and only in this case!), it should be set as ASYNC. In that case,
  193. * it will be called from a worker with mvm->mutex held.
  194. * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
  195. * mutex itself, it will be called from a worker without mvm->mutex held.
  196. */
  197. enum iwl_rx_handler_context {
  198. RX_HANDLER_SYNC,
  199. RX_HANDLER_ASYNC_LOCKED,
  200. RX_HANDLER_ASYNC_UNLOCKED,
  201. };
  202. /**
  203. * struct iwl_rx_handlers handler for FW notification
  204. * @cmd_id: command id
  205. * @context: see &iwl_rx_handler_context
  206. * @fn: the function is called when notification is received
  207. */
  208. struct iwl_rx_handlers {
  209. u16 cmd_id;
  210. enum iwl_rx_handler_context context;
  211. void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
  212. };
  213. #define RX_HANDLER(_cmd_id, _fn, _context) \
  214. { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
  215. #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \
  216. { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
  217. /*
  218. * Handlers for fw notifications
  219. * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
  220. * This list should be in order of frequency for performance purposes.
  221. *
  222. * The handler can be one from three contexts, see &iwl_rx_handler_context
  223. */
  224. static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
  225. RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
  226. RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
  227. RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
  228. RX_HANDLER_ASYNC_LOCKED),
  229. RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
  230. RX_HANDLER_ASYNC_LOCKED),
  231. RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
  232. RX_HANDLER_ASYNC_LOCKED),
  233. RX_HANDLER(ANTENNA_COUPLING_NOTIFICATION,
  234. iwl_mvm_rx_ant_coupling_notif, RX_HANDLER_ASYNC_LOCKED),
  235. RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
  236. iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
  237. RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
  238. RX_HANDLER_SYNC),
  239. RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
  240. RX_HANDLER_ASYNC_LOCKED),
  241. RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
  242. RX_HANDLER(SCAN_ITERATION_COMPLETE,
  243. iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
  244. RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
  245. iwl_mvm_rx_lmac_scan_complete_notif,
  246. RX_HANDLER_ASYNC_LOCKED),
  247. RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
  248. RX_HANDLER_SYNC),
  249. RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
  250. RX_HANDLER_ASYNC_LOCKED),
  251. RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
  252. iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
  253. RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
  254. RX_HANDLER_SYNC),
  255. RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
  256. RX_HANDLER_SYNC),
  257. RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
  258. RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
  259. iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
  260. RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
  261. RX_HANDLER_ASYNC_LOCKED),
  262. RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
  263. iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
  264. RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
  265. iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
  266. RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
  267. RX_HANDLER_ASYNC_LOCKED),
  268. RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
  269. RX_HANDLER_SYNC),
  270. RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
  271. RX_HANDLER_ASYNC_LOCKED),
  272. RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
  273. iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
  274. RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
  275. iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
  276. RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
  277. iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
  278. RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
  279. iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
  280. };
  281. #undef RX_HANDLER
  282. #undef RX_HANDLER_GRP
  283. /* Please keep this array *SORTED* by hex value.
  284. * Access is done through binary search
  285. */
  286. static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
  287. HCMD_NAME(MVM_ALIVE),
  288. HCMD_NAME(REPLY_ERROR),
  289. HCMD_NAME(ECHO_CMD),
  290. HCMD_NAME(INIT_COMPLETE_NOTIF),
  291. HCMD_NAME(PHY_CONTEXT_CMD),
  292. HCMD_NAME(DBG_CFG),
  293. HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION),
  294. HCMD_NAME(SCAN_CFG_CMD),
  295. HCMD_NAME(SCAN_REQ_UMAC),
  296. HCMD_NAME(SCAN_ABORT_UMAC),
  297. HCMD_NAME(SCAN_COMPLETE_UMAC),
  298. HCMD_NAME(TOF_CMD),
  299. HCMD_NAME(TOF_NOTIFICATION),
  300. HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
  301. HCMD_NAME(ADD_STA_KEY),
  302. HCMD_NAME(ADD_STA),
  303. HCMD_NAME(REMOVE_STA),
  304. HCMD_NAME(FW_GET_ITEM_CMD),
  305. HCMD_NAME(TX_CMD),
  306. HCMD_NAME(SCD_QUEUE_CFG),
  307. HCMD_NAME(TXPATH_FLUSH),
  308. HCMD_NAME(MGMT_MCAST_KEY),
  309. HCMD_NAME(WEP_KEY),
  310. HCMD_NAME(SHARED_MEM_CFG),
  311. HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
  312. HCMD_NAME(MAC_CONTEXT_CMD),
  313. HCMD_NAME(TIME_EVENT_CMD),
  314. HCMD_NAME(TIME_EVENT_NOTIFICATION),
  315. HCMD_NAME(BINDING_CONTEXT_CMD),
  316. HCMD_NAME(TIME_QUOTA_CMD),
  317. HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
  318. HCMD_NAME(LQ_CMD),
  319. HCMD_NAME(FW_PAGING_BLOCK_CMD),
  320. HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
  321. HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
  322. HCMD_NAME(HOT_SPOT_CMD),
  323. HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
  324. HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
  325. HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
  326. HCMD_NAME(BT_COEX_UPDATE_SW_BOOST),
  327. HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT),
  328. HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
  329. HCMD_NAME(BT_COEX_CI),
  330. HCMD_NAME(PHY_CONFIGURATION_CMD),
  331. HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
  332. HCMD_NAME(PHY_DB_CMD),
  333. HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
  334. HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
  335. HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD),
  336. HCMD_NAME(POWER_TABLE_CMD),
  337. HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
  338. HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
  339. HCMD_NAME(DC2DC_CONFIG_CMD),
  340. HCMD_NAME(NVM_ACCESS_CMD),
  341. HCMD_NAME(SET_CALIB_DEFAULT_CMD),
  342. HCMD_NAME(BEACON_NOTIFICATION),
  343. HCMD_NAME(BEACON_TEMPLATE_CMD),
  344. HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
  345. HCMD_NAME(BT_CONFIG),
  346. HCMD_NAME(STATISTICS_CMD),
  347. HCMD_NAME(STATISTICS_NOTIFICATION),
  348. HCMD_NAME(EOSP_NOTIFICATION),
  349. HCMD_NAME(REDUCE_TX_POWER_CMD),
  350. HCMD_NAME(CARD_STATE_CMD),
  351. HCMD_NAME(CARD_STATE_NOTIFICATION),
  352. HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
  353. HCMD_NAME(TDLS_CONFIG_CMD),
  354. HCMD_NAME(MAC_PM_POWER_TABLE),
  355. HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
  356. HCMD_NAME(MFUART_LOAD_NOTIFICATION),
  357. HCMD_NAME(RSS_CONFIG_CMD),
  358. HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
  359. HCMD_NAME(REPLY_RX_PHY_CMD),
  360. HCMD_NAME(REPLY_RX_MPDU_CMD),
  361. HCMD_NAME(BA_NOTIF),
  362. HCMD_NAME(MCC_UPDATE_CMD),
  363. HCMD_NAME(MCC_CHUB_UPDATE_CMD),
  364. HCMD_NAME(MARKER_CMD),
  365. HCMD_NAME(BT_COEX_PRIO_TABLE),
  366. HCMD_NAME(BT_COEX_PROT_ENV),
  367. HCMD_NAME(BT_PROFILE_NOTIFICATION),
  368. HCMD_NAME(BCAST_FILTER_CMD),
  369. HCMD_NAME(MCAST_FILTER_CMD),
  370. HCMD_NAME(REPLY_SF_CFG_CMD),
  371. HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
  372. HCMD_NAME(D3_CONFIG_CMD),
  373. HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
  374. HCMD_NAME(OFFLOADS_QUERY_CMD),
  375. HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
  376. HCMD_NAME(MATCH_FOUND_NOTIFICATION),
  377. HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER),
  378. HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
  379. HCMD_NAME(WOWLAN_PATTERNS),
  380. HCMD_NAME(WOWLAN_CONFIGURATION),
  381. HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
  382. HCMD_NAME(WOWLAN_TKIP_PARAM),
  383. HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
  384. HCMD_NAME(WOWLAN_GET_STATUSES),
  385. HCMD_NAME(WOWLAN_TX_POWER_PER_DB),
  386. HCMD_NAME(SCAN_ITERATION_COMPLETE),
  387. HCMD_NAME(D0I3_END_CMD),
  388. HCMD_NAME(LTR_CONFIG),
  389. HCMD_NAME(REPLY_DEBUG_CMD),
  390. };
  391. /* Please keep this array *SORTED* by hex value.
  392. * Access is done through binary search
  393. */
  394. static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
  395. HCMD_NAME(SHARED_MEM_CFG_CMD),
  396. };
  397. /* Please keep this array *SORTED* by hex value.
  398. * Access is done through binary search
  399. */
  400. static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
  401. HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
  402. HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
  403. HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
  404. };
  405. /* Please keep this array *SORTED* by hex value.
  406. * Access is done through binary search
  407. */
  408. static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
  409. HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
  410. HCMD_NAME(CTDP_CONFIG_CMD),
  411. HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
  412. HCMD_NAME(CT_KILL_NOTIFICATION),
  413. HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
  414. };
  415. /* Please keep this array *SORTED* by hex value.
  416. * Access is done through binary search
  417. */
  418. static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
  419. HCMD_NAME(DQA_ENABLE_CMD),
  420. HCMD_NAME(UPDATE_MU_GROUPS_CMD),
  421. HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
  422. HCMD_NAME(STA_PM_NOTIF),
  423. HCMD_NAME(MU_GROUP_MGMT_NOTIF),
  424. HCMD_NAME(RX_QUEUES_NOTIFICATION),
  425. };
  426. /* Please keep this array *SORTED* by hex value.
  427. * Access is done through binary search
  428. */
  429. static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
  430. HCMD_NAME(MFU_ASSERT_DUMP_NTF),
  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_prot_offload_names[] = {
  436. HCMD_NAME(STORED_BEACON_NTF),
  437. };
  438. /* Please keep this array *SORTED* by hex value.
  439. * Access is done through binary search
  440. */
  441. static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
  442. HCMD_NAME(NVM_ACCESS_COMPLETE),
  443. };
  444. static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
  445. [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
  446. [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
  447. [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
  448. [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
  449. [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
  450. [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
  451. [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
  452. [REGULATORY_AND_NVM_GROUP] =
  453. HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
  454. };
  455. /* this forward declaration can avoid to export the function */
  456. static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
  457. static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
  458. static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
  459. {
  460. const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
  461. if (!pwr_tx_backoff)
  462. return 0;
  463. while (pwr_tx_backoff->pwr) {
  464. if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
  465. return pwr_tx_backoff->backoff;
  466. pwr_tx_backoff++;
  467. }
  468. return 0;
  469. }
  470. static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
  471. static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
  472. {
  473. struct iwl_mvm *mvm =
  474. container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
  475. struct ieee80211_vif *tx_blocked_vif;
  476. struct iwl_mvm_vif *mvmvif;
  477. mutex_lock(&mvm->mutex);
  478. tx_blocked_vif =
  479. rcu_dereference_protected(mvm->csa_tx_blocked_vif,
  480. lockdep_is_held(&mvm->mutex));
  481. if (!tx_blocked_vif)
  482. goto unlock;
  483. mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
  484. iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
  485. RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
  486. unlock:
  487. mutex_unlock(&mvm->mutex);
  488. }
  489. static struct iwl_op_mode *
  490. iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
  491. const struct iwl_fw *fw, struct dentry *dbgfs_dir)
  492. {
  493. struct ieee80211_hw *hw;
  494. struct iwl_op_mode *op_mode;
  495. struct iwl_mvm *mvm;
  496. struct iwl_trans_config trans_cfg = {};
  497. static const u8 no_reclaim_cmds[] = {
  498. TX_CMD,
  499. };
  500. int err, scan_size;
  501. u32 min_backoff;
  502. /*
  503. * We use IWL_MVM_STATION_COUNT to check the validity of the station
  504. * index all over the driver - check that its value corresponds to the
  505. * array size.
  506. */
  507. BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
  508. /********************************
  509. * 1. Allocating and configuring HW data
  510. ********************************/
  511. hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
  512. sizeof(struct iwl_mvm),
  513. &iwl_mvm_hw_ops);
  514. if (!hw)
  515. return NULL;
  516. if (cfg->max_rx_agg_size)
  517. hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
  518. if (cfg->max_tx_agg_size)
  519. hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
  520. op_mode = hw->priv;
  521. mvm = IWL_OP_MODE_GET_MVM(op_mode);
  522. mvm->dev = trans->dev;
  523. mvm->trans = trans;
  524. mvm->cfg = cfg;
  525. mvm->fw = fw;
  526. mvm->hw = hw;
  527. if (iwl_mvm_has_new_rx_api(mvm)) {
  528. op_mode->ops = &iwl_mvm_ops_mq;
  529. trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
  530. } else {
  531. op_mode->ops = &iwl_mvm_ops;
  532. trans->rx_mpdu_cmd_hdr_size =
  533. sizeof(struct iwl_rx_mpdu_res_start);
  534. if (WARN_ON(trans->num_rx_queues > 1))
  535. goto out_free;
  536. }
  537. mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
  538. if (!iwl_mvm_is_dqa_supported(mvm)) {
  539. mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
  540. if (mvm->cfg->base_params->num_of_queues == 16) {
  541. mvm->aux_queue = 11;
  542. mvm->first_agg_queue = 12;
  543. } else {
  544. mvm->aux_queue = 15;
  545. mvm->first_agg_queue = 16;
  546. }
  547. } else {
  548. mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
  549. mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
  550. mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
  551. mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
  552. mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
  553. }
  554. mvm->sf_state = SF_UNINIT;
  555. if (iwl_mvm_has_new_tx_api(mvm))
  556. mvm->cur_ucode = IWL_UCODE_REGULAR;
  557. else
  558. mvm->cur_ucode = IWL_UCODE_INIT;
  559. mvm->drop_bcn_ap_mode = true;
  560. mutex_init(&mvm->mutex);
  561. mutex_init(&mvm->d0i3_suspend_mutex);
  562. spin_lock_init(&mvm->async_handlers_lock);
  563. INIT_LIST_HEAD(&mvm->time_event_list);
  564. INIT_LIST_HEAD(&mvm->aux_roc_te_list);
  565. INIT_LIST_HEAD(&mvm->async_handlers_list);
  566. spin_lock_init(&mvm->time_event_lock);
  567. spin_lock_init(&mvm->queue_info_lock);
  568. INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
  569. INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
  570. INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
  571. INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
  572. INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
  573. INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
  574. INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
  575. INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
  576. spin_lock_init(&mvm->d0i3_tx_lock);
  577. spin_lock_init(&mvm->refs_lock);
  578. skb_queue_head_init(&mvm->d0i3_tx);
  579. init_waitqueue_head(&mvm->d0i3_exit_waitq);
  580. init_waitqueue_head(&mvm->rx_sync_waitq);
  581. atomic_set(&mvm->queue_sync_counter, 0);
  582. SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
  583. INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
  584. /*
  585. * Populate the state variables that the transport layer needs
  586. * to know about.
  587. */
  588. trans_cfg.op_mode = op_mode;
  589. trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
  590. trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
  591. switch (iwlwifi_mod_params.amsdu_size) {
  592. case IWL_AMSDU_DEF:
  593. case IWL_AMSDU_4K:
  594. trans_cfg.rx_buf_size = IWL_AMSDU_4K;
  595. break;
  596. case IWL_AMSDU_8K:
  597. trans_cfg.rx_buf_size = IWL_AMSDU_8K;
  598. break;
  599. case IWL_AMSDU_12K:
  600. trans_cfg.rx_buf_size = IWL_AMSDU_12K;
  601. break;
  602. default:
  603. pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
  604. iwlwifi_mod_params.amsdu_size);
  605. trans_cfg.rx_buf_size = IWL_AMSDU_4K;
  606. }
  607. /* the hardware splits the A-MSDU */
  608. if (mvm->cfg->mq_rx_supported)
  609. trans_cfg.rx_buf_size = IWL_AMSDU_4K;
  610. trans->wide_cmd_header = true;
  611. trans_cfg.bc_table_dword = true;
  612. trans_cfg.command_groups = iwl_mvm_groups;
  613. trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
  614. if (iwl_mvm_is_dqa_supported(mvm))
  615. trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
  616. else
  617. trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
  618. trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
  619. trans_cfg.scd_set_active = true;
  620. trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
  621. driver_data[2]);
  622. trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
  623. trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
  624. /* Set a short watchdog for the command queue */
  625. trans_cfg.cmd_q_wdg_timeout =
  626. iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
  627. snprintf(mvm->hw->wiphy->fw_version,
  628. sizeof(mvm->hw->wiphy->fw_version),
  629. "%s", fw->fw_version);
  630. /* Configure transport layer */
  631. iwl_trans_configure(mvm->trans, &trans_cfg);
  632. trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
  633. trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
  634. trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
  635. memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
  636. sizeof(trans->dbg_conf_tlv));
  637. trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
  638. /* set up notification wait support */
  639. iwl_notification_wait_init(&mvm->notif_wait);
  640. /* Init phy db */
  641. mvm->phy_db = iwl_phy_db_init(trans);
  642. if (!mvm->phy_db) {
  643. IWL_ERR(mvm, "Cannot init phy_db\n");
  644. goto out_free;
  645. }
  646. IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
  647. mvm->cfg->name, mvm->trans->hw_rev);
  648. if (iwlwifi_mod_params.nvm_file)
  649. mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
  650. else
  651. IWL_DEBUG_EEPROM(mvm->trans->dev,
  652. "working without external nvm file\n");
  653. err = iwl_trans_start_hw(mvm->trans);
  654. if (err)
  655. goto out_free;
  656. mutex_lock(&mvm->mutex);
  657. iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
  658. if (iwl_mvm_has_new_tx_api(mvm))
  659. err = iwl_run_unified_mvm_ucode(mvm, true);
  660. else
  661. err = iwl_run_init_mvm_ucode(mvm, true);
  662. if (!err || !iwlmvm_mod_params.init_dbg)
  663. iwl_mvm_stop_device(mvm);
  664. iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
  665. mutex_unlock(&mvm->mutex);
  666. /* returns 0 if successful, 1 if success but in rfkill */
  667. if (err < 0 && !iwlmvm_mod_params.init_dbg) {
  668. IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
  669. goto out_free;
  670. }
  671. scan_size = iwl_mvm_scan_size(mvm);
  672. mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
  673. if (!mvm->scan_cmd)
  674. goto out_free;
  675. /* Set EBS as successful as long as not stated otherwise by the FW. */
  676. mvm->last_ebs_successful = true;
  677. err = iwl_mvm_mac_setup_register(mvm);
  678. if (err)
  679. goto out_free;
  680. mvm->hw_registered = true;
  681. min_backoff = calc_min_backoff(trans, cfg);
  682. iwl_mvm_thermal_initialize(mvm, min_backoff);
  683. err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
  684. if (err)
  685. goto out_unregister;
  686. memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
  687. /* The transport always starts with a taken reference, we can
  688. * release it now if d0i3 is supported */
  689. if (iwl_mvm_is_d0i3_supported(mvm))
  690. iwl_trans_unref(mvm->trans);
  691. iwl_mvm_tof_init(mvm);
  692. return op_mode;
  693. out_unregister:
  694. ieee80211_unregister_hw(mvm->hw);
  695. mvm->hw_registered = false;
  696. iwl_mvm_leds_exit(mvm);
  697. iwl_mvm_thermal_exit(mvm);
  698. out_free:
  699. flush_delayed_work(&mvm->fw_dump_wk);
  700. iwl_phy_db_free(mvm->phy_db);
  701. kfree(mvm->scan_cmd);
  702. iwl_trans_op_mode_leave(trans);
  703. ieee80211_free_hw(mvm->hw);
  704. return NULL;
  705. }
  706. static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
  707. {
  708. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  709. int i;
  710. /* If d0i3 is supported, we have released the reference that
  711. * the transport started with, so we should take it back now
  712. * that we are leaving.
  713. */
  714. if (iwl_mvm_is_d0i3_supported(mvm))
  715. iwl_trans_ref(mvm->trans);
  716. iwl_mvm_leds_exit(mvm);
  717. iwl_mvm_thermal_exit(mvm);
  718. ieee80211_unregister_hw(mvm->hw);
  719. kfree(mvm->scan_cmd);
  720. kfree(mvm->mcast_filter_cmd);
  721. mvm->mcast_filter_cmd = NULL;
  722. #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
  723. kfree(mvm->d3_resume_sram);
  724. #endif
  725. iwl_trans_op_mode_leave(mvm->trans);
  726. iwl_phy_db_free(mvm->phy_db);
  727. mvm->phy_db = NULL;
  728. iwl_free_nvm_data(mvm->nvm_data);
  729. for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
  730. kfree(mvm->nvm_sections[i].data);
  731. iwl_mvm_tof_clean(mvm);
  732. mutex_destroy(&mvm->mutex);
  733. mutex_destroy(&mvm->d0i3_suspend_mutex);
  734. ieee80211_free_hw(mvm->hw);
  735. }
  736. struct iwl_async_handler_entry {
  737. struct list_head list;
  738. struct iwl_rx_cmd_buffer rxb;
  739. enum iwl_rx_handler_context context;
  740. void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
  741. };
  742. void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
  743. {
  744. struct iwl_async_handler_entry *entry, *tmp;
  745. spin_lock_bh(&mvm->async_handlers_lock);
  746. list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
  747. iwl_free_rxb(&entry->rxb);
  748. list_del(&entry->list);
  749. kfree(entry);
  750. }
  751. spin_unlock_bh(&mvm->async_handlers_lock);
  752. }
  753. static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
  754. {
  755. struct iwl_mvm *mvm =
  756. container_of(wk, struct iwl_mvm, async_handlers_wk);
  757. struct iwl_async_handler_entry *entry, *tmp;
  758. LIST_HEAD(local_list);
  759. /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
  760. /*
  761. * Sync with Rx path with a lock. Remove all the entries from this list,
  762. * add them to a local one (lock free), and then handle them.
  763. */
  764. spin_lock_bh(&mvm->async_handlers_lock);
  765. list_splice_init(&mvm->async_handlers_list, &local_list);
  766. spin_unlock_bh(&mvm->async_handlers_lock);
  767. list_for_each_entry_safe(entry, tmp, &local_list, list) {
  768. if (entry->context == RX_HANDLER_ASYNC_LOCKED)
  769. mutex_lock(&mvm->mutex);
  770. entry->fn(mvm, &entry->rxb);
  771. iwl_free_rxb(&entry->rxb);
  772. list_del(&entry->list);
  773. if (entry->context == RX_HANDLER_ASYNC_LOCKED)
  774. mutex_unlock(&mvm->mutex);
  775. kfree(entry);
  776. }
  777. }
  778. static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
  779. struct iwl_rx_packet *pkt)
  780. {
  781. struct iwl_fw_dbg_trigger_tlv *trig;
  782. struct iwl_fw_dbg_trigger_cmd *cmds_trig;
  783. int i;
  784. if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
  785. return;
  786. trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
  787. cmds_trig = (void *)trig->data;
  788. if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
  789. return;
  790. for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
  791. /* don't collect on CMD 0 */
  792. if (!cmds_trig->cmds[i].cmd_id)
  793. break;
  794. if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
  795. cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
  796. continue;
  797. iwl_mvm_fw_dbg_collect_trig(mvm, trig,
  798. "CMD 0x%02x.%02x received",
  799. pkt->hdr.group_id, pkt->hdr.cmd);
  800. break;
  801. }
  802. }
  803. static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
  804. struct iwl_rx_cmd_buffer *rxb,
  805. struct iwl_rx_packet *pkt)
  806. {
  807. int i;
  808. iwl_mvm_rx_check_trigger(mvm, pkt);
  809. /*
  810. * Do the notification wait before RX handlers so
  811. * even if the RX handler consumes the RXB we have
  812. * access to it in the notification wait entry.
  813. */
  814. iwl_notification_wait_notify(&mvm->notif_wait, pkt);
  815. for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
  816. const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
  817. struct iwl_async_handler_entry *entry;
  818. if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
  819. continue;
  820. if (rx_h->context == RX_HANDLER_SYNC) {
  821. rx_h->fn(mvm, rxb);
  822. return;
  823. }
  824. entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
  825. /* we can't do much... */
  826. if (!entry)
  827. return;
  828. entry->rxb._page = rxb_steal_page(rxb);
  829. entry->rxb._offset = rxb->_offset;
  830. entry->rxb._rx_page_order = rxb->_rx_page_order;
  831. entry->fn = rx_h->fn;
  832. entry->context = rx_h->context;
  833. spin_lock(&mvm->async_handlers_lock);
  834. list_add_tail(&entry->list, &mvm->async_handlers_list);
  835. spin_unlock(&mvm->async_handlers_lock);
  836. schedule_work(&mvm->async_handlers_wk);
  837. break;
  838. }
  839. }
  840. static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
  841. struct napi_struct *napi,
  842. struct iwl_rx_cmd_buffer *rxb)
  843. {
  844. struct iwl_rx_packet *pkt = rxb_addr(rxb);
  845. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  846. u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
  847. if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
  848. iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
  849. else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
  850. iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
  851. else
  852. iwl_mvm_rx_common(mvm, rxb, pkt);
  853. }
  854. static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
  855. struct napi_struct *napi,
  856. struct iwl_rx_cmd_buffer *rxb)
  857. {
  858. struct iwl_rx_packet *pkt = rxb_addr(rxb);
  859. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  860. u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
  861. if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
  862. iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
  863. else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
  864. RX_QUEUES_NOTIFICATION)))
  865. iwl_mvm_rx_queue_notif(mvm, rxb, 0);
  866. else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
  867. iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
  868. else
  869. iwl_mvm_rx_common(mvm, rxb, pkt);
  870. }
  871. void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
  872. {
  873. int q;
  874. if (WARN_ON_ONCE(!mq))
  875. return;
  876. for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
  877. if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
  878. IWL_DEBUG_TX_QUEUES(mvm,
  879. "mac80211 %d already stopped\n", q);
  880. continue;
  881. }
  882. ieee80211_stop_queue(mvm->hw, q);
  883. }
  884. }
  885. static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
  886. const struct iwl_device_cmd *cmd)
  887. {
  888. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  889. /*
  890. * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
  891. * commands that need to block the Tx queues.
  892. */
  893. iwl_trans_block_txq_ptrs(mvm->trans, false);
  894. }
  895. static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
  896. {
  897. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  898. unsigned long mq;
  899. spin_lock_bh(&mvm->queue_info_lock);
  900. mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
  901. spin_unlock_bh(&mvm->queue_info_lock);
  902. iwl_mvm_stop_mac_queues(mvm, mq);
  903. }
  904. void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
  905. {
  906. int q;
  907. if (WARN_ON_ONCE(!mq))
  908. return;
  909. for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
  910. if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
  911. IWL_DEBUG_TX_QUEUES(mvm,
  912. "mac80211 %d still stopped\n", q);
  913. continue;
  914. }
  915. ieee80211_wake_queue(mvm->hw, q);
  916. }
  917. }
  918. static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
  919. {
  920. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  921. unsigned long mq;
  922. spin_lock_bh(&mvm->queue_info_lock);
  923. mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
  924. spin_unlock_bh(&mvm->queue_info_lock);
  925. iwl_mvm_start_mac_queues(mvm, mq);
  926. }
  927. void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
  928. {
  929. if (state)
  930. set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
  931. else
  932. clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
  933. wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
  934. }
  935. static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
  936. {
  937. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  938. bool calibrating = ACCESS_ONCE(mvm->calibrating);
  939. if (state)
  940. set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
  941. else
  942. clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
  943. wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
  944. /* iwl_run_init_mvm_ucode is waiting for results, abort it */
  945. if (calibrating)
  946. iwl_abort_notification_waits(&mvm->notif_wait);
  947. /*
  948. * Stop the device if we run OPERATIONAL firmware or if we are in the
  949. * middle of the calibrations.
  950. */
  951. return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
  952. }
  953. static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
  954. {
  955. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  956. struct ieee80211_tx_info *info;
  957. info = IEEE80211_SKB_CB(skb);
  958. iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
  959. ieee80211_free_txskb(mvm->hw, skb);
  960. }
  961. struct iwl_mvm_reprobe {
  962. struct device *dev;
  963. struct work_struct work;
  964. };
  965. static void iwl_mvm_reprobe_wk(struct work_struct *wk)
  966. {
  967. struct iwl_mvm_reprobe *reprobe;
  968. reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
  969. if (device_reprobe(reprobe->dev))
  970. dev_err(reprobe->dev, "reprobe failed!\n");
  971. kfree(reprobe);
  972. module_put(THIS_MODULE);
  973. }
  974. static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
  975. {
  976. struct iwl_mvm *mvm =
  977. container_of(work, struct iwl_mvm, fw_dump_wk.work);
  978. if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
  979. return;
  980. mutex_lock(&mvm->mutex);
  981. /* stop recording */
  982. if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
  983. iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
  984. } else {
  985. iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
  986. /* wait before we collect the data till the DBGC stop */
  987. udelay(100);
  988. }
  989. iwl_mvm_fw_error_dump(mvm);
  990. /* start recording again if the firmware is not crashed */
  991. WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
  992. mvm->fw->dbg_dest_tlv &&
  993. iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
  994. mutex_unlock(&mvm->mutex);
  995. iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
  996. }
  997. void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
  998. {
  999. iwl_abort_notification_waits(&mvm->notif_wait);
  1000. /*
  1001. * This is a bit racy, but worst case we tell mac80211 about
  1002. * a stopped/aborted scan when that was already done which
  1003. * is not a problem. It is necessary to abort any os scan
  1004. * here because mac80211 requires having the scan cleared
  1005. * before restarting.
  1006. * We'll reset the scan_status to NONE in restart cleanup in
  1007. * the next start() call from mac80211. If restart isn't called
  1008. * (no fw restart) scan status will stay busy.
  1009. */
  1010. iwl_mvm_report_scan_aborted(mvm);
  1011. /*
  1012. * If we're restarting already, don't cycle restarts.
  1013. * If INIT fw asserted, it will likely fail again.
  1014. * If WoWLAN fw asserted, don't restart either, mac80211
  1015. * can't recover this since we're already half suspended.
  1016. */
  1017. if (!mvm->restart_fw && fw_error) {
  1018. iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
  1019. NULL);
  1020. } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
  1021. &mvm->status)) {
  1022. struct iwl_mvm_reprobe *reprobe;
  1023. IWL_ERR(mvm,
  1024. "Firmware error during reconfiguration - reprobe!\n");
  1025. /*
  1026. * get a module reference to avoid doing this while unloading
  1027. * anyway and to avoid scheduling a work with code that's
  1028. * being removed.
  1029. */
  1030. if (!try_module_get(THIS_MODULE)) {
  1031. IWL_ERR(mvm, "Module is being unloaded - abort\n");
  1032. return;
  1033. }
  1034. reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
  1035. if (!reprobe) {
  1036. module_put(THIS_MODULE);
  1037. return;
  1038. }
  1039. reprobe->dev = mvm->trans->dev;
  1040. INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
  1041. schedule_work(&reprobe->work);
  1042. } else if (mvm->cur_ucode == IWL_UCODE_REGULAR &&
  1043. mvm->hw_registered) {
  1044. /* don't let the transport/FW power down */
  1045. iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
  1046. if (fw_error && mvm->restart_fw > 0)
  1047. mvm->restart_fw--;
  1048. ieee80211_restart_hw(mvm->hw);
  1049. }
  1050. }
  1051. static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
  1052. {
  1053. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1054. iwl_mvm_dump_nic_error_log(mvm);
  1055. iwl_mvm_nic_restart(mvm, true);
  1056. }
  1057. static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
  1058. {
  1059. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1060. WARN_ON(1);
  1061. iwl_mvm_nic_restart(mvm, true);
  1062. }
  1063. struct iwl_d0i3_iter_data {
  1064. struct iwl_mvm *mvm;
  1065. struct ieee80211_vif *connected_vif;
  1066. u8 ap_sta_id;
  1067. u8 vif_count;
  1068. u8 offloading_tid;
  1069. bool disable_offloading;
  1070. };
  1071. static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
  1072. struct ieee80211_vif *vif,
  1073. struct iwl_d0i3_iter_data *iter_data)
  1074. {
  1075. struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  1076. struct iwl_mvm_sta *mvmsta;
  1077. u32 available_tids = 0;
  1078. u8 tid;
  1079. if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
  1080. mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
  1081. return false;
  1082. mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
  1083. if (!mvmsta)
  1084. return false;
  1085. spin_lock_bh(&mvmsta->lock);
  1086. for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
  1087. struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
  1088. /*
  1089. * in case of pending tx packets, don't use this tid
  1090. * for offloading in order to prevent reuse of the same
  1091. * qos seq counters.
  1092. */
  1093. if (iwl_mvm_tid_queued(tid_data))
  1094. continue;
  1095. if (tid_data->state != IWL_AGG_OFF)
  1096. continue;
  1097. available_tids |= BIT(tid);
  1098. }
  1099. spin_unlock_bh(&mvmsta->lock);
  1100. /*
  1101. * disallow protocol offloading if we have no available tid
  1102. * (with no pending frames and no active aggregation,
  1103. * as we don't handle "holes" properly - the scheduler needs the
  1104. * frame's seq number and TFD index to match)
  1105. */
  1106. if (!available_tids)
  1107. return true;
  1108. /* for simplicity, just use the first available tid */
  1109. iter_data->offloading_tid = ffs(available_tids) - 1;
  1110. return false;
  1111. }
  1112. static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
  1113. struct ieee80211_vif *vif)
  1114. {
  1115. struct iwl_d0i3_iter_data *data = _data;
  1116. struct iwl_mvm *mvm = data->mvm;
  1117. struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  1118. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
  1119. IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
  1120. if (vif->type != NL80211_IFTYPE_STATION ||
  1121. !vif->bss_conf.assoc)
  1122. return;
  1123. /*
  1124. * in case of pending tx packets or active aggregations,
  1125. * avoid offloading features in order to prevent reuse of
  1126. * the same qos seq counters.
  1127. */
  1128. if (iwl_mvm_disallow_offloading(mvm, vif, data))
  1129. data->disable_offloading = true;
  1130. iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
  1131. iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
  1132. false, flags);
  1133. /*
  1134. * on init/association, mvm already configures POWER_TABLE_CMD
  1135. * and REPLY_MCAST_FILTER_CMD, so currently don't
  1136. * reconfigure them (we might want to use different
  1137. * params later on, though).
  1138. */
  1139. data->ap_sta_id = mvmvif->ap_sta_id;
  1140. data->vif_count++;
  1141. /*
  1142. * no new commands can be sent at this stage, so it's safe
  1143. * to save the vif pointer during d0i3 entrance.
  1144. */
  1145. data->connected_vif = vif;
  1146. }
  1147. static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
  1148. struct iwl_wowlan_config_cmd *cmd,
  1149. struct iwl_d0i3_iter_data *iter_data)
  1150. {
  1151. struct ieee80211_sta *ap_sta;
  1152. struct iwl_mvm_sta *mvm_ap_sta;
  1153. if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
  1154. return;
  1155. rcu_read_lock();
  1156. ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
  1157. if (IS_ERR_OR_NULL(ap_sta))
  1158. goto out;
  1159. mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
  1160. cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
  1161. cmd->offloading_tid = iter_data->offloading_tid;
  1162. cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
  1163. ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
  1164. /*
  1165. * The d0i3 uCode takes care of the nonqos counters,
  1166. * so configure only the qos seq ones.
  1167. */
  1168. iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
  1169. out:
  1170. rcu_read_unlock();
  1171. }
  1172. int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
  1173. {
  1174. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1175. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
  1176. int ret;
  1177. struct iwl_d0i3_iter_data d0i3_iter_data = {
  1178. .mvm = mvm,
  1179. };
  1180. struct iwl_wowlan_config_cmd wowlan_config_cmd = {
  1181. .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
  1182. IWL_WOWLAN_WAKEUP_BEACON_MISS |
  1183. IWL_WOWLAN_WAKEUP_LINK_CHANGE),
  1184. };
  1185. struct iwl_d3_manager_config d3_cfg_cmd = {
  1186. .min_sleep_time = cpu_to_le32(1000),
  1187. .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
  1188. };
  1189. IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
  1190. if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
  1191. return -EINVAL;
  1192. set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
  1193. /*
  1194. * iwl_mvm_ref_sync takes a reference before checking the flag.
  1195. * so by checking there is no held reference we prevent a state
  1196. * in which iwl_mvm_ref_sync continues successfully while we
  1197. * configure the firmware to enter d0i3
  1198. */
  1199. if (iwl_mvm_ref_taken(mvm)) {
  1200. IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
  1201. clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
  1202. wake_up(&mvm->d0i3_exit_waitq);
  1203. return 1;
  1204. }
  1205. ieee80211_iterate_active_interfaces_atomic(mvm->hw,
  1206. IEEE80211_IFACE_ITER_NORMAL,
  1207. iwl_mvm_enter_d0i3_iterator,
  1208. &d0i3_iter_data);
  1209. if (d0i3_iter_data.vif_count == 1) {
  1210. mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
  1211. mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
  1212. } else {
  1213. WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
  1214. mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
  1215. mvm->d0i3_offloading = false;
  1216. }
  1217. /* make sure we have no running tx while configuring the seqno */
  1218. synchronize_net();
  1219. /* Flush the hw queues, in case something got queued during entry */
  1220. ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
  1221. if (ret)
  1222. return ret;
  1223. /* configure wowlan configuration only if needed */
  1224. if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
  1225. /* wake on beacons only if beacon storing isn't supported */
  1226. if (!fw_has_capa(&mvm->fw->ucode_capa,
  1227. IWL_UCODE_TLV_CAPA_BEACON_STORING))
  1228. wowlan_config_cmd.wakeup_filter |=
  1229. cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
  1230. iwl_mvm_wowlan_config_key_params(mvm,
  1231. d0i3_iter_data.connected_vif,
  1232. true, flags);
  1233. iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
  1234. &d0i3_iter_data);
  1235. ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
  1236. sizeof(wowlan_config_cmd),
  1237. &wowlan_config_cmd);
  1238. if (ret)
  1239. return ret;
  1240. }
  1241. return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
  1242. flags | CMD_MAKE_TRANS_IDLE,
  1243. sizeof(d3_cfg_cmd), &d3_cfg_cmd);
  1244. }
  1245. static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
  1246. struct ieee80211_vif *vif)
  1247. {
  1248. struct iwl_mvm *mvm = _data;
  1249. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
  1250. IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
  1251. if (vif->type != NL80211_IFTYPE_STATION ||
  1252. !vif->bss_conf.assoc)
  1253. return;
  1254. iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
  1255. }
  1256. struct iwl_mvm_d0i3_exit_work_iter_data {
  1257. struct iwl_mvm *mvm;
  1258. struct iwl_wowlan_status *status;
  1259. u32 wakeup_reasons;
  1260. };
  1261. static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
  1262. struct ieee80211_vif *vif)
  1263. {
  1264. struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
  1265. struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  1266. u32 reasons = data->wakeup_reasons;
  1267. /* consider only the relevant station interface */
  1268. if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
  1269. data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
  1270. return;
  1271. if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
  1272. iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
  1273. else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
  1274. ieee80211_beacon_loss(vif);
  1275. else
  1276. iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
  1277. }
  1278. void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
  1279. {
  1280. struct ieee80211_sta *sta = NULL;
  1281. struct iwl_mvm_sta *mvm_ap_sta;
  1282. int i;
  1283. bool wake_queues = false;
  1284. lockdep_assert_held(&mvm->mutex);
  1285. spin_lock_bh(&mvm->d0i3_tx_lock);
  1286. if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
  1287. goto out;
  1288. IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
  1289. /* get the sta in order to update seq numbers and re-enqueue skbs */
  1290. sta = rcu_dereference_protected(
  1291. mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
  1292. lockdep_is_held(&mvm->mutex));
  1293. if (IS_ERR_OR_NULL(sta)) {
  1294. sta = NULL;
  1295. goto out;
  1296. }
  1297. if (mvm->d0i3_offloading && qos_seq) {
  1298. /* update qos seq numbers if offloading was enabled */
  1299. mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
  1300. for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
  1301. u16 seq = le16_to_cpu(qos_seq[i]);
  1302. /* firmware stores last-used one, we store next one */
  1303. seq += 0x10;
  1304. mvm_ap_sta->tid_data[i].seq_number = seq;
  1305. }
  1306. }
  1307. out:
  1308. /* re-enqueue (or drop) all packets */
  1309. while (!skb_queue_empty(&mvm->d0i3_tx)) {
  1310. struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
  1311. if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
  1312. ieee80211_free_txskb(mvm->hw, skb);
  1313. /* if the skb_queue is not empty, we need to wake queues */
  1314. wake_queues = true;
  1315. }
  1316. clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
  1317. wake_up(&mvm->d0i3_exit_waitq);
  1318. mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
  1319. if (wake_queues)
  1320. ieee80211_wake_queues(mvm->hw);
  1321. spin_unlock_bh(&mvm->d0i3_tx_lock);
  1322. }
  1323. static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
  1324. {
  1325. struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
  1326. struct iwl_host_cmd get_status_cmd = {
  1327. .id = WOWLAN_GET_STATUSES,
  1328. .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
  1329. };
  1330. struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
  1331. .mvm = mvm,
  1332. };
  1333. struct iwl_wowlan_status *status;
  1334. int ret;
  1335. u32 wakeup_reasons = 0;
  1336. __le16 *qos_seq = NULL;
  1337. mutex_lock(&mvm->mutex);
  1338. ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
  1339. if (ret)
  1340. goto out;
  1341. if (!get_status_cmd.resp_pkt)
  1342. goto out;
  1343. status = (void *)get_status_cmd.resp_pkt->data;
  1344. wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
  1345. qos_seq = status->qos_seq_ctr;
  1346. IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
  1347. iter_data.wakeup_reasons = wakeup_reasons;
  1348. iter_data.status = status;
  1349. ieee80211_iterate_active_interfaces(mvm->hw,
  1350. IEEE80211_IFACE_ITER_NORMAL,
  1351. iwl_mvm_d0i3_exit_work_iter,
  1352. &iter_data);
  1353. out:
  1354. iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
  1355. IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
  1356. wakeup_reasons);
  1357. /* qos_seq might point inside resp_pkt, so free it only now */
  1358. if (get_status_cmd.resp_pkt)
  1359. iwl_free_resp(&get_status_cmd);
  1360. /* the FW might have updated the regdomain */
  1361. iwl_mvm_update_changed_regdom(mvm);
  1362. iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
  1363. mutex_unlock(&mvm->mutex);
  1364. }
  1365. int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
  1366. {
  1367. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
  1368. CMD_WAKE_UP_TRANS;
  1369. int ret;
  1370. IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
  1371. if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
  1372. return -EINVAL;
  1373. mutex_lock(&mvm->d0i3_suspend_mutex);
  1374. if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
  1375. IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
  1376. __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
  1377. mutex_unlock(&mvm->d0i3_suspend_mutex);
  1378. return 0;
  1379. }
  1380. mutex_unlock(&mvm->d0i3_suspend_mutex);
  1381. ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
  1382. if (ret)
  1383. goto out;
  1384. ieee80211_iterate_active_interfaces_atomic(mvm->hw,
  1385. IEEE80211_IFACE_ITER_NORMAL,
  1386. iwl_mvm_exit_d0i3_iterator,
  1387. mvm);
  1388. out:
  1389. schedule_work(&mvm->d0i3_exit_work);
  1390. return ret;
  1391. }
  1392. int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
  1393. {
  1394. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1395. iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
  1396. return _iwl_mvm_exit_d0i3(mvm);
  1397. }
  1398. #define IWL_MVM_COMMON_OPS \
  1399. /* these could be differentiated */ \
  1400. .async_cb = iwl_mvm_async_cb, \
  1401. .queue_full = iwl_mvm_stop_sw_queue, \
  1402. .queue_not_full = iwl_mvm_wake_sw_queue, \
  1403. .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
  1404. .free_skb = iwl_mvm_free_skb, \
  1405. .nic_error = iwl_mvm_nic_error, \
  1406. .cmd_queue_full = iwl_mvm_cmd_queue_full, \
  1407. .nic_config = iwl_mvm_nic_config, \
  1408. .enter_d0i3 = iwl_mvm_enter_d0i3, \
  1409. .exit_d0i3 = iwl_mvm_exit_d0i3, \
  1410. /* as we only register one, these MUST be common! */ \
  1411. .start = iwl_op_mode_mvm_start, \
  1412. .stop = iwl_op_mode_mvm_stop
  1413. static const struct iwl_op_mode_ops iwl_mvm_ops = {
  1414. IWL_MVM_COMMON_OPS,
  1415. .rx = iwl_mvm_rx,
  1416. };
  1417. static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
  1418. struct napi_struct *napi,
  1419. struct iwl_rx_cmd_buffer *rxb,
  1420. unsigned int queue)
  1421. {
  1422. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1423. struct iwl_rx_packet *pkt = rxb_addr(rxb);
  1424. u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
  1425. if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
  1426. iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
  1427. else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
  1428. RX_QUEUES_NOTIFICATION)))
  1429. iwl_mvm_rx_queue_notif(mvm, rxb, queue);
  1430. else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
  1431. iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
  1432. }
  1433. static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
  1434. IWL_MVM_COMMON_OPS,
  1435. .rx = iwl_mvm_rx_mq,
  1436. .rx_rss = iwl_mvm_rx_mq_rss,
  1437. };