ops.c 49 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. * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  11. *
  12. * This program is free software; you can redistribute it and/or modify
  13. * it under the terms of version 2 of the GNU General Public License as
  14. * published by the Free Software Foundation.
  15. *
  16. * This program is distributed in the hope that it will be useful, but
  17. * WITHOUT ANY WARRANTY; without even the implied warranty of
  18. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19. * General Public License for more details.
  20. *
  21. * You should have received a copy of the GNU General Public License
  22. * along with this program; if not, write to the Free Software
  23. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  24. * USA
  25. *
  26. * The full GNU General Public License is included in this distribution
  27. * in the file called COPYING.
  28. *
  29. * Contact Information:
  30. * Intel Linux Wireless <linuxwifi@intel.com>
  31. * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  32. *
  33. * BSD LICENSE
  34. *
  35. * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  36. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  37. * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
  38. * All rights reserved.
  39. *
  40. * Redistribution and use in source and binary forms, with or without
  41. * modification, are permitted provided that the following conditions
  42. * are met:
  43. *
  44. * * Redistributions of source code must retain the above copyright
  45. * notice, this list of conditions and the following disclaimer.
  46. * * Redistributions in binary form must reproduce the above copyright
  47. * notice, this list of conditions and the following disclaimer in
  48. * the documentation and/or other materials provided with the
  49. * distribution.
  50. * * Neither the name Intel Corporation nor the names of its
  51. * contributors may be used to endorse or promote products derived
  52. * from this software without specific prior written permission.
  53. *
  54. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  55. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  56. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  57. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  58. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  59. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  60. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  61. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  62. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  63. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  64. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65. *
  66. *****************************************************************************/
  67. #include <linux/module.h>
  68. #include <linux/vmalloc.h>
  69. #include <net/mac80211.h>
  70. #include "fw/notif-wait.h"
  71. #include "iwl-trans.h"
  72. #include "iwl-op-mode.h"
  73. #include "fw/img.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-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 and higher set the ADC
  159. * sampling, and shouldn't be set to any non-zero value.
  160. * The same is supposed to be true of the other HW, but unsetting
  161. * them (such as the 7260) causes automatic tests to fail on seemingly
  162. * unrelated errors. Need to further investigate this, but for now
  163. * we'll separate cases.
  164. */
  165. if (mvm->trans->cfg->device_family < IWL_DEVICE_FAMILY_8000)
  166. reg_val |= CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI;
  167. iwl_trans_set_bits_mask(mvm->trans, CSR_HW_IF_CONFIG_REG,
  168. CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
  169. CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP |
  170. CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
  171. CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
  172. CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH |
  173. CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
  174. CSR_HW_IF_CONFIG_REG_BIT_MAC_SI,
  175. reg_val);
  176. IWL_DEBUG_INFO(mvm, "Radio type=0x%x-0x%x-0x%x\n", radio_cfg_type,
  177. radio_cfg_step, radio_cfg_dash);
  178. /*
  179. * W/A : NIC is stuck in a reset state after Early PCIe power off
  180. * (PCIe power is lost before PERST# is asserted), causing ME FW
  181. * to lose ownership and not being able to obtain it back.
  182. */
  183. if (!mvm->trans->cfg->apmg_not_supported)
  184. iwl_set_bits_mask_prph(mvm->trans, APMG_PS_CTRL_REG,
  185. APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
  186. ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
  187. }
  188. /**
  189. * enum iwl_rx_handler_context context for Rx handler
  190. * @RX_HANDLER_SYNC : this means that it will be called in the Rx path
  191. * which can't acquire mvm->mutex.
  192. * @RX_HANDLER_ASYNC_LOCKED : If the handler needs to hold mvm->mutex
  193. * (and only in this case!), it should be set as ASYNC. In that case,
  194. * it will be called from a worker with mvm->mutex held.
  195. * @RX_HANDLER_ASYNC_UNLOCKED : in case the handler needs to lock the
  196. * mutex itself, it will be called from a worker without mvm->mutex held.
  197. */
  198. enum iwl_rx_handler_context {
  199. RX_HANDLER_SYNC,
  200. RX_HANDLER_ASYNC_LOCKED,
  201. RX_HANDLER_ASYNC_UNLOCKED,
  202. };
  203. /**
  204. * struct iwl_rx_handlers handler for FW notification
  205. * @cmd_id: command id
  206. * @context: see &iwl_rx_handler_context
  207. * @fn: the function is called when notification is received
  208. */
  209. struct iwl_rx_handlers {
  210. u16 cmd_id;
  211. enum iwl_rx_handler_context context;
  212. void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
  213. };
  214. #define RX_HANDLER(_cmd_id, _fn, _context) \
  215. { .cmd_id = _cmd_id, .fn = _fn, .context = _context }
  216. #define RX_HANDLER_GRP(_grp, _cmd, _fn, _context) \
  217. { .cmd_id = WIDE_ID(_grp, _cmd), .fn = _fn, .context = _context }
  218. /*
  219. * Handlers for fw notifications
  220. * Convention: RX_HANDLER(CMD_NAME, iwl_mvm_rx_CMD_NAME
  221. * This list should be in order of frequency for performance purposes.
  222. *
  223. * The handler can be one from three contexts, see &iwl_rx_handler_context
  224. */
  225. static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = {
  226. RX_HANDLER(TX_CMD, iwl_mvm_rx_tx_cmd, RX_HANDLER_SYNC),
  227. RX_HANDLER(BA_NOTIF, iwl_mvm_rx_ba_notif, RX_HANDLER_SYNC),
  228. RX_HANDLER(BT_PROFILE_NOTIFICATION, iwl_mvm_rx_bt_coex_notif,
  229. RX_HANDLER_ASYNC_LOCKED),
  230. RX_HANDLER(BEACON_NOTIFICATION, iwl_mvm_rx_beacon_notif,
  231. RX_HANDLER_ASYNC_LOCKED),
  232. RX_HANDLER(STATISTICS_NOTIFICATION, iwl_mvm_rx_statistics,
  233. RX_HANDLER_ASYNC_LOCKED),
  234. RX_HANDLER(BA_WINDOW_STATUS_NOTIFICATION_ID,
  235. iwl_mvm_window_status_notif, RX_HANDLER_SYNC),
  236. RX_HANDLER(TIME_EVENT_NOTIFICATION, iwl_mvm_rx_time_event_notif,
  237. RX_HANDLER_SYNC),
  238. RX_HANDLER(MCC_CHUB_UPDATE_CMD, iwl_mvm_rx_chub_update_mcc,
  239. RX_HANDLER_ASYNC_LOCKED),
  240. RX_HANDLER(EOSP_NOTIFICATION, iwl_mvm_rx_eosp_notif, RX_HANDLER_SYNC),
  241. RX_HANDLER(SCAN_ITERATION_COMPLETE,
  242. iwl_mvm_rx_lmac_scan_iter_complete_notif, RX_HANDLER_SYNC),
  243. RX_HANDLER(SCAN_OFFLOAD_COMPLETE,
  244. iwl_mvm_rx_lmac_scan_complete_notif,
  245. RX_HANDLER_ASYNC_LOCKED),
  246. RX_HANDLER(MATCH_FOUND_NOTIFICATION, iwl_mvm_rx_scan_match_found,
  247. RX_HANDLER_SYNC),
  248. RX_HANDLER(SCAN_COMPLETE_UMAC, iwl_mvm_rx_umac_scan_complete_notif,
  249. RX_HANDLER_ASYNC_LOCKED),
  250. RX_HANDLER(SCAN_ITERATION_COMPLETE_UMAC,
  251. iwl_mvm_rx_umac_scan_iter_complete_notif, RX_HANDLER_SYNC),
  252. RX_HANDLER(CARD_STATE_NOTIFICATION, iwl_mvm_rx_card_state_notif,
  253. RX_HANDLER_SYNC),
  254. RX_HANDLER(MISSED_BEACONS_NOTIFICATION, iwl_mvm_rx_missed_beacons_notif,
  255. RX_HANDLER_SYNC),
  256. RX_HANDLER(REPLY_ERROR, iwl_mvm_rx_fw_error, RX_HANDLER_SYNC),
  257. RX_HANDLER(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION,
  258. iwl_mvm_power_uapsd_misbehaving_ap_notif, RX_HANDLER_SYNC),
  259. RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif,
  260. RX_HANDLER_ASYNC_LOCKED),
  261. RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE,
  262. iwl_mvm_temp_notif, RX_HANDLER_ASYNC_UNLOCKED),
  263. RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION,
  264. iwl_mvm_ct_kill_notif, RX_HANDLER_SYNC),
  265. RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif,
  266. RX_HANDLER_ASYNC_LOCKED),
  267. RX_HANDLER(MFUART_LOAD_NOTIFICATION, iwl_mvm_rx_mfuart_notif,
  268. RX_HANDLER_SYNC),
  269. RX_HANDLER(TOF_NOTIFICATION, iwl_mvm_tof_resp_handler,
  270. RX_HANDLER_ASYNC_LOCKED),
  271. RX_HANDLER_GRP(DEBUG_GROUP, MFU_ASSERT_DUMP_NTF,
  272. iwl_mvm_mfu_assert_dump_notif, RX_HANDLER_SYNC),
  273. RX_HANDLER_GRP(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
  274. iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
  275. RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
  276. iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
  277. RX_HANDLER_GRP(DATA_PATH_GROUP, STA_PM_NOTIF,
  278. iwl_mvm_sta_pm_notif, RX_HANDLER_SYNC),
  279. };
  280. #undef RX_HANDLER
  281. #undef RX_HANDLER_GRP
  282. /* Please keep this array *SORTED* by hex value.
  283. * Access is done through binary search
  284. */
  285. static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
  286. HCMD_NAME(MVM_ALIVE),
  287. HCMD_NAME(REPLY_ERROR),
  288. HCMD_NAME(ECHO_CMD),
  289. HCMD_NAME(INIT_COMPLETE_NOTIF),
  290. HCMD_NAME(PHY_CONTEXT_CMD),
  291. HCMD_NAME(DBG_CFG),
  292. HCMD_NAME(SCAN_CFG_CMD),
  293. HCMD_NAME(SCAN_REQ_UMAC),
  294. HCMD_NAME(SCAN_ABORT_UMAC),
  295. HCMD_NAME(SCAN_COMPLETE_UMAC),
  296. HCMD_NAME(TOF_CMD),
  297. HCMD_NAME(TOF_NOTIFICATION),
  298. HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
  299. HCMD_NAME(ADD_STA_KEY),
  300. HCMD_NAME(ADD_STA),
  301. HCMD_NAME(REMOVE_STA),
  302. HCMD_NAME(FW_GET_ITEM_CMD),
  303. HCMD_NAME(TX_CMD),
  304. HCMD_NAME(SCD_QUEUE_CFG),
  305. HCMD_NAME(TXPATH_FLUSH),
  306. HCMD_NAME(MGMT_MCAST_KEY),
  307. HCMD_NAME(WEP_KEY),
  308. HCMD_NAME(SHARED_MEM_CFG),
  309. HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
  310. HCMD_NAME(MAC_CONTEXT_CMD),
  311. HCMD_NAME(TIME_EVENT_CMD),
  312. HCMD_NAME(TIME_EVENT_NOTIFICATION),
  313. HCMD_NAME(BINDING_CONTEXT_CMD),
  314. HCMD_NAME(TIME_QUOTA_CMD),
  315. HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
  316. HCMD_NAME(LEDS_CMD),
  317. HCMD_NAME(LQ_CMD),
  318. HCMD_NAME(FW_PAGING_BLOCK_CMD),
  319. HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
  320. HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
  321. HCMD_NAME(HOT_SPOT_CMD),
  322. HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
  323. HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
  324. HCMD_NAME(BT_COEX_CI),
  325. HCMD_NAME(PHY_CONFIGURATION_CMD),
  326. HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
  327. HCMD_NAME(PHY_DB_CMD),
  328. HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
  329. HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
  330. HCMD_NAME(POWER_TABLE_CMD),
  331. HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
  332. HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
  333. HCMD_NAME(DC2DC_CONFIG_CMD),
  334. HCMD_NAME(NVM_ACCESS_CMD),
  335. HCMD_NAME(BEACON_NOTIFICATION),
  336. HCMD_NAME(BEACON_TEMPLATE_CMD),
  337. HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
  338. HCMD_NAME(BT_CONFIG),
  339. HCMD_NAME(STATISTICS_CMD),
  340. HCMD_NAME(STATISTICS_NOTIFICATION),
  341. HCMD_NAME(EOSP_NOTIFICATION),
  342. HCMD_NAME(REDUCE_TX_POWER_CMD),
  343. HCMD_NAME(CARD_STATE_NOTIFICATION),
  344. HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
  345. HCMD_NAME(TDLS_CONFIG_CMD),
  346. HCMD_NAME(MAC_PM_POWER_TABLE),
  347. HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
  348. HCMD_NAME(MFUART_LOAD_NOTIFICATION),
  349. HCMD_NAME(RSS_CONFIG_CMD),
  350. HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
  351. HCMD_NAME(REPLY_RX_PHY_CMD),
  352. HCMD_NAME(REPLY_RX_MPDU_CMD),
  353. HCMD_NAME(FRAME_RELEASE),
  354. HCMD_NAME(BA_NOTIF),
  355. HCMD_NAME(MCC_UPDATE_CMD),
  356. HCMD_NAME(MCC_CHUB_UPDATE_CMD),
  357. HCMD_NAME(MARKER_CMD),
  358. HCMD_NAME(BT_PROFILE_NOTIFICATION),
  359. HCMD_NAME(BCAST_FILTER_CMD),
  360. HCMD_NAME(MCAST_FILTER_CMD),
  361. HCMD_NAME(REPLY_SF_CFG_CMD),
  362. HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
  363. HCMD_NAME(D3_CONFIG_CMD),
  364. HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
  365. HCMD_NAME(OFFLOADS_QUERY_CMD),
  366. HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
  367. HCMD_NAME(MATCH_FOUND_NOTIFICATION),
  368. HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
  369. HCMD_NAME(WOWLAN_PATTERNS),
  370. HCMD_NAME(WOWLAN_CONFIGURATION),
  371. HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
  372. HCMD_NAME(WOWLAN_TKIP_PARAM),
  373. HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
  374. HCMD_NAME(WOWLAN_GET_STATUSES),
  375. HCMD_NAME(SCAN_ITERATION_COMPLETE),
  376. HCMD_NAME(D0I3_END_CMD),
  377. HCMD_NAME(LTR_CONFIG),
  378. };
  379. /* Please keep this array *SORTED* by hex value.
  380. * Access is done through binary search
  381. */
  382. static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
  383. HCMD_NAME(SHARED_MEM_CFG_CMD),
  384. HCMD_NAME(INIT_EXTENDED_CFG_CMD),
  385. };
  386. /* Please keep this array *SORTED* by hex value.
  387. * Access is done through binary search
  388. */
  389. static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
  390. HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
  391. HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
  392. HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
  393. };
  394. /* Please keep this array *SORTED* by hex value.
  395. * Access is done through binary search
  396. */
  397. static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
  398. HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
  399. HCMD_NAME(CTDP_CONFIG_CMD),
  400. HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
  401. HCMD_NAME(GEO_TX_POWER_LIMIT),
  402. HCMD_NAME(CT_KILL_NOTIFICATION),
  403. HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
  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_data_path_names[] = {
  409. HCMD_NAME(DQA_ENABLE_CMD),
  410. HCMD_NAME(UPDATE_MU_GROUPS_CMD),
  411. HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
  412. HCMD_NAME(STA_PM_NOTIF),
  413. HCMD_NAME(MU_GROUP_MGMT_NOTIF),
  414. HCMD_NAME(RX_QUEUES_NOTIFICATION),
  415. };
  416. /* Please keep this array *SORTED* by hex value.
  417. * Access is done through binary search
  418. */
  419. static const struct iwl_hcmd_names iwl_mvm_debug_names[] = {
  420. HCMD_NAME(MFU_ASSERT_DUMP_NTF),
  421. };
  422. /* Please keep this array *SORTED* by hex value.
  423. * Access is done through binary search
  424. */
  425. static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
  426. HCMD_NAME(STORED_BEACON_NTF),
  427. };
  428. /* Please keep this array *SORTED* by hex value.
  429. * Access is done through binary search
  430. */
  431. static const struct iwl_hcmd_names iwl_mvm_regulatory_and_nvm_names[] = {
  432. HCMD_NAME(NVM_ACCESS_COMPLETE),
  433. HCMD_NAME(NVM_GET_INFO),
  434. };
  435. static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
  436. [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
  437. [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
  438. [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
  439. [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
  440. [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
  441. [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
  442. [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
  443. [REGULATORY_AND_NVM_GROUP] =
  444. HCMD_ARR(iwl_mvm_regulatory_and_nvm_names),
  445. };
  446. /* this forward declaration can avoid to export the function */
  447. static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
  448. static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
  449. static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
  450. {
  451. const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
  452. if (!pwr_tx_backoff)
  453. return 0;
  454. while (pwr_tx_backoff->pwr) {
  455. if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
  456. return pwr_tx_backoff->backoff;
  457. pwr_tx_backoff++;
  458. }
  459. return 0;
  460. }
  461. static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
  462. {
  463. struct iwl_mvm *mvm =
  464. container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
  465. struct ieee80211_vif *tx_blocked_vif;
  466. struct iwl_mvm_vif *mvmvif;
  467. mutex_lock(&mvm->mutex);
  468. tx_blocked_vif =
  469. rcu_dereference_protected(mvm->csa_tx_blocked_vif,
  470. lockdep_is_held(&mvm->mutex));
  471. if (!tx_blocked_vif)
  472. goto unlock;
  473. mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
  474. iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
  475. RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
  476. unlock:
  477. mutex_unlock(&mvm->mutex);
  478. }
  479. static int iwl_mvm_fwrt_dump_start(void *ctx)
  480. {
  481. struct iwl_mvm *mvm = ctx;
  482. int ret;
  483. ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
  484. if (ret)
  485. return ret;
  486. mutex_lock(&mvm->mutex);
  487. return 0;
  488. }
  489. static void iwl_mvm_fwrt_dump_end(void *ctx)
  490. {
  491. struct iwl_mvm *mvm = ctx;
  492. mutex_unlock(&mvm->mutex);
  493. iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
  494. }
  495. static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = {
  496. .dump_start = iwl_mvm_fwrt_dump_start,
  497. .dump_end = iwl_mvm_fwrt_dump_end,
  498. };
  499. static struct iwl_op_mode *
  500. iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
  501. const struct iwl_fw *fw, struct dentry *dbgfs_dir)
  502. {
  503. struct ieee80211_hw *hw;
  504. struct iwl_op_mode *op_mode;
  505. struct iwl_mvm *mvm;
  506. struct iwl_trans_config trans_cfg = {};
  507. static const u8 no_reclaim_cmds[] = {
  508. TX_CMD,
  509. };
  510. int err, scan_size;
  511. u32 min_backoff;
  512. /*
  513. * We use IWL_MVM_STATION_COUNT to check the validity of the station
  514. * index all over the driver - check that its value corresponds to the
  515. * array size.
  516. */
  517. BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
  518. /********************************
  519. * 1. Allocating and configuring HW data
  520. ********************************/
  521. hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
  522. sizeof(struct iwl_mvm),
  523. &iwl_mvm_hw_ops);
  524. if (!hw)
  525. return NULL;
  526. if (cfg->max_rx_agg_size)
  527. hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
  528. if (cfg->max_tx_agg_size)
  529. hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
  530. op_mode = hw->priv;
  531. mvm = IWL_OP_MODE_GET_MVM(op_mode);
  532. mvm->dev = trans->dev;
  533. mvm->trans = trans;
  534. mvm->cfg = cfg;
  535. mvm->fw = fw;
  536. mvm->hw = hw;
  537. iwl_fw_runtime_init(&mvm->fwrt, trans, fw, &iwl_mvm_fwrt_ops, mvm);
  538. mvm->init_status = 0;
  539. if (iwl_mvm_has_new_rx_api(mvm)) {
  540. op_mode->ops = &iwl_mvm_ops_mq;
  541. trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
  542. } else {
  543. op_mode->ops = &iwl_mvm_ops;
  544. trans->rx_mpdu_cmd_hdr_size =
  545. sizeof(struct iwl_rx_mpdu_res_start);
  546. if (WARN_ON(trans->num_rx_queues > 1))
  547. goto out_free;
  548. }
  549. mvm->fw_restart = iwlwifi_mod_params.fw_restart ? -1 : 0;
  550. mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
  551. mvm->probe_queue = IWL_MVM_DQA_AP_PROBE_RESP_QUEUE;
  552. mvm->p2p_dev_queue = IWL_MVM_DQA_P2P_DEVICE_QUEUE;
  553. mvm->sf_state = SF_UNINIT;
  554. if (iwl_mvm_has_unified_ucode(mvm))
  555. iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_REGULAR);
  556. else
  557. iwl_fw_set_current_image(&mvm->fwrt, IWL_UCODE_INIT);
  558. mvm->drop_bcn_ap_mode = true;
  559. mutex_init(&mvm->mutex);
  560. mutex_init(&mvm->d0i3_suspend_mutex);
  561. spin_lock_init(&mvm->async_handlers_lock);
  562. INIT_LIST_HEAD(&mvm->time_event_list);
  563. INIT_LIST_HEAD(&mvm->aux_roc_te_list);
  564. INIT_LIST_HEAD(&mvm->async_handlers_list);
  565. spin_lock_init(&mvm->time_event_lock);
  566. spin_lock_init(&mvm->queue_info_lock);
  567. INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
  568. INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
  569. INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
  570. INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
  571. INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
  572. INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
  573. spin_lock_init(&mvm->d0i3_tx_lock);
  574. spin_lock_init(&mvm->refs_lock);
  575. skb_queue_head_init(&mvm->d0i3_tx);
  576. init_waitqueue_head(&mvm->d0i3_exit_waitq);
  577. init_waitqueue_head(&mvm->rx_sync_waitq);
  578. atomic_set(&mvm->queue_sync_counter, 0);
  579. SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
  580. INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
  581. /*
  582. * Populate the state variables that the transport layer needs
  583. * to know about.
  584. */
  585. trans_cfg.op_mode = op_mode;
  586. trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
  587. trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
  588. switch (iwlwifi_mod_params.amsdu_size) {
  589. case IWL_AMSDU_DEF:
  590. case IWL_AMSDU_4K:
  591. trans_cfg.rx_buf_size = IWL_AMSDU_4K;
  592. break;
  593. case IWL_AMSDU_8K:
  594. trans_cfg.rx_buf_size = IWL_AMSDU_8K;
  595. break;
  596. case IWL_AMSDU_12K:
  597. trans_cfg.rx_buf_size = IWL_AMSDU_12K;
  598. break;
  599. default:
  600. pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
  601. iwlwifi_mod_params.amsdu_size);
  602. trans_cfg.rx_buf_size = IWL_AMSDU_4K;
  603. }
  604. /* the hardware splits the A-MSDU */
  605. if (mvm->cfg->mq_rx_supported)
  606. trans_cfg.rx_buf_size = IWL_AMSDU_4K;
  607. trans->wide_cmd_header = true;
  608. trans_cfg.bc_table_dword = true;
  609. trans_cfg.command_groups = iwl_mvm_groups;
  610. trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
  611. trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
  612. trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
  613. trans_cfg.scd_set_active = true;
  614. trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
  615. driver_data[2]);
  616. trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
  617. trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
  618. /* Set a short watchdog for the command queue */
  619. trans_cfg.cmd_q_wdg_timeout =
  620. iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
  621. snprintf(mvm->hw->wiphy->fw_version,
  622. sizeof(mvm->hw->wiphy->fw_version),
  623. "%s", fw->fw_version);
  624. /* Configure transport layer */
  625. iwl_trans_configure(mvm->trans, &trans_cfg);
  626. trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
  627. trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
  628. trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
  629. memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
  630. sizeof(trans->dbg_conf_tlv));
  631. trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
  632. /* set up notification wait support */
  633. iwl_notification_wait_init(&mvm->notif_wait);
  634. /* Init phy db */
  635. mvm->phy_db = iwl_phy_db_init(trans);
  636. if (!mvm->phy_db) {
  637. IWL_ERR(mvm, "Cannot init phy_db\n");
  638. goto out_free;
  639. }
  640. IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
  641. mvm->cfg->name, mvm->trans->hw_rev);
  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. err = iwl_trans_start_hw(mvm->trans);
  648. if (err)
  649. goto out_free;
  650. mutex_lock(&mvm->mutex);
  651. iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
  652. err = iwl_run_init_mvm_ucode(mvm, true);
  653. if (!iwlmvm_mod_params.init_dbg)
  654. iwl_mvm_stop_device(mvm);
  655. iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
  656. mutex_unlock(&mvm->mutex);
  657. if (err < 0) {
  658. IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
  659. goto out_free;
  660. }
  661. scan_size = iwl_mvm_scan_size(mvm);
  662. mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
  663. if (!mvm->scan_cmd)
  664. goto out_free;
  665. /* Set EBS as successful as long as not stated otherwise by the FW. */
  666. mvm->last_ebs_successful = true;
  667. err = iwl_mvm_mac_setup_register(mvm);
  668. if (err)
  669. goto out_free;
  670. mvm->hw_registered = true;
  671. min_backoff = calc_min_backoff(trans, cfg);
  672. iwl_mvm_thermal_initialize(mvm, min_backoff);
  673. err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
  674. if (err)
  675. goto out_unregister;
  676. if (!iwl_mvm_has_new_rx_stats_api(mvm))
  677. memset(&mvm->rx_stats_v3, 0,
  678. sizeof(struct mvm_statistics_rx_v3));
  679. else
  680. memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
  681. /* The transport always starts with a taken reference, we can
  682. * release it now if d0i3 is supported */
  683. if (iwl_mvm_is_d0i3_supported(mvm))
  684. iwl_trans_unref(mvm->trans);
  685. iwl_mvm_tof_init(mvm);
  686. return op_mode;
  687. out_unregister:
  688. if (iwlmvm_mod_params.init_dbg)
  689. return op_mode;
  690. ieee80211_unregister_hw(mvm->hw);
  691. mvm->hw_registered = false;
  692. iwl_mvm_leds_exit(mvm);
  693. iwl_mvm_thermal_exit(mvm);
  694. out_free:
  695. iwl_fw_flush_dump(&mvm->fwrt);
  696. if (iwlmvm_mod_params.init_dbg)
  697. return op_mode;
  698. iwl_phy_db_free(mvm->phy_db);
  699. kfree(mvm->scan_cmd);
  700. iwl_trans_op_mode_leave(trans);
  701. ieee80211_free_hw(mvm->hw);
  702. return NULL;
  703. }
  704. static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
  705. {
  706. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  707. int i;
  708. /* If d0i3 is supported, we have released the reference that
  709. * the transport started with, so we should take it back now
  710. * that we are leaving.
  711. */
  712. if (iwl_mvm_is_d0i3_supported(mvm))
  713. iwl_trans_ref(mvm->trans);
  714. iwl_mvm_leds_exit(mvm);
  715. iwl_mvm_thermal_exit(mvm);
  716. if (mvm->init_status & IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE) {
  717. ieee80211_unregister_hw(mvm->hw);
  718. mvm->init_status &= ~IWL_MVM_INIT_STATUS_REG_HW_INIT_COMPLETE;
  719. }
  720. kfree(mvm->scan_cmd);
  721. kfree(mvm->mcast_filter_cmd);
  722. mvm->mcast_filter_cmd = NULL;
  723. #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
  724. kfree(mvm->d3_resume_sram);
  725. #endif
  726. iwl_trans_op_mode_leave(mvm->trans);
  727. iwl_phy_db_free(mvm->phy_db);
  728. mvm->phy_db = NULL;
  729. kfree(mvm->nvm_data);
  730. for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
  731. kfree(mvm->nvm_sections[i].data);
  732. iwl_mvm_tof_clean(mvm);
  733. mutex_destroy(&mvm->mutex);
  734. mutex_destroy(&mvm->d0i3_suspend_mutex);
  735. ieee80211_free_hw(mvm->hw);
  736. }
  737. struct iwl_async_handler_entry {
  738. struct list_head list;
  739. struct iwl_rx_cmd_buffer rxb;
  740. enum iwl_rx_handler_context context;
  741. void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
  742. };
  743. void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
  744. {
  745. struct iwl_async_handler_entry *entry, *tmp;
  746. spin_lock_bh(&mvm->async_handlers_lock);
  747. list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
  748. iwl_free_rxb(&entry->rxb);
  749. list_del(&entry->list);
  750. kfree(entry);
  751. }
  752. spin_unlock_bh(&mvm->async_handlers_lock);
  753. }
  754. static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
  755. {
  756. struct iwl_mvm *mvm =
  757. container_of(wk, struct iwl_mvm, async_handlers_wk);
  758. struct iwl_async_handler_entry *entry, *tmp;
  759. LIST_HEAD(local_list);
  760. /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
  761. /*
  762. * Sync with Rx path with a lock. Remove all the entries from this list,
  763. * add them to a local one (lock free), and then handle them.
  764. */
  765. spin_lock_bh(&mvm->async_handlers_lock);
  766. list_splice_init(&mvm->async_handlers_list, &local_list);
  767. spin_unlock_bh(&mvm->async_handlers_lock);
  768. list_for_each_entry_safe(entry, tmp, &local_list, list) {
  769. if (entry->context == RX_HANDLER_ASYNC_LOCKED)
  770. mutex_lock(&mvm->mutex);
  771. entry->fn(mvm, &entry->rxb);
  772. iwl_free_rxb(&entry->rxb);
  773. list_del(&entry->list);
  774. if (entry->context == RX_HANDLER_ASYNC_LOCKED)
  775. mutex_unlock(&mvm->mutex);
  776. kfree(entry);
  777. }
  778. }
  779. static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
  780. struct iwl_rx_packet *pkt)
  781. {
  782. struct iwl_fw_dbg_trigger_tlv *trig;
  783. struct iwl_fw_dbg_trigger_cmd *cmds_trig;
  784. int i;
  785. if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
  786. return;
  787. trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
  788. cmds_trig = (void *)trig->data;
  789. if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt, NULL, trig))
  790. return;
  791. for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
  792. /* don't collect on CMD 0 */
  793. if (!cmds_trig->cmds[i].cmd_id)
  794. break;
  795. if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
  796. cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
  797. continue;
  798. iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
  799. "CMD 0x%02x.%02x received",
  800. pkt->hdr.group_id, pkt->hdr.cmd);
  801. break;
  802. }
  803. }
  804. static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
  805. struct iwl_rx_cmd_buffer *rxb,
  806. struct iwl_rx_packet *pkt)
  807. {
  808. int i;
  809. iwl_mvm_rx_check_trigger(mvm, pkt);
  810. /*
  811. * Do the notification wait before RX handlers so
  812. * even if the RX handler consumes the RXB we have
  813. * access to it in the notification wait entry.
  814. */
  815. iwl_notification_wait_notify(&mvm->notif_wait, pkt);
  816. for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
  817. const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
  818. struct iwl_async_handler_entry *entry;
  819. if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
  820. continue;
  821. if (rx_h->context == RX_HANDLER_SYNC) {
  822. rx_h->fn(mvm, rxb);
  823. return;
  824. }
  825. entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
  826. /* we can't do much... */
  827. if (!entry)
  828. return;
  829. entry->rxb._page = rxb_steal_page(rxb);
  830. entry->rxb._offset = rxb->_offset;
  831. entry->rxb._rx_page_order = rxb->_rx_page_order;
  832. entry->fn = rx_h->fn;
  833. entry->context = rx_h->context;
  834. spin_lock(&mvm->async_handlers_lock);
  835. list_add_tail(&entry->list, &mvm->async_handlers_list);
  836. spin_unlock(&mvm->async_handlers_lock);
  837. schedule_work(&mvm->async_handlers_wk);
  838. return;
  839. }
  840. iwl_fwrt_handle_notification(&mvm->fwrt, rxb);
  841. }
  842. static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
  843. struct napi_struct *napi,
  844. struct iwl_rx_cmd_buffer *rxb)
  845. {
  846. struct iwl_rx_packet *pkt = rxb_addr(rxb);
  847. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  848. u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
  849. if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
  850. iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
  851. else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
  852. iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
  853. else
  854. iwl_mvm_rx_common(mvm, rxb, pkt);
  855. }
  856. static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
  857. struct napi_struct *napi,
  858. struct iwl_rx_cmd_buffer *rxb)
  859. {
  860. struct iwl_rx_packet *pkt = rxb_addr(rxb);
  861. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  862. u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
  863. if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
  864. iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
  865. else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
  866. RX_QUEUES_NOTIFICATION)))
  867. iwl_mvm_rx_queue_notif(mvm, rxb, 0);
  868. else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
  869. iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
  870. else
  871. iwl_mvm_rx_common(mvm, rxb, pkt);
  872. }
  873. void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
  874. {
  875. int q;
  876. if (WARN_ON_ONCE(!mq))
  877. return;
  878. for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
  879. if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
  880. IWL_DEBUG_TX_QUEUES(mvm,
  881. "mac80211 %d already stopped\n", q);
  882. continue;
  883. }
  884. ieee80211_stop_queue(mvm->hw, q);
  885. }
  886. }
  887. static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
  888. const struct iwl_device_cmd *cmd)
  889. {
  890. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  891. /*
  892. * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
  893. * commands that need to block the Tx queues.
  894. */
  895. iwl_trans_block_txq_ptrs(mvm->trans, false);
  896. }
  897. static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
  898. {
  899. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  900. unsigned long mq;
  901. spin_lock_bh(&mvm->queue_info_lock);
  902. mq = mvm->hw_queue_to_mac80211[hw_queue];
  903. spin_unlock_bh(&mvm->queue_info_lock);
  904. iwl_mvm_stop_mac_queues(mvm, mq);
  905. }
  906. void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
  907. {
  908. int q;
  909. if (WARN_ON_ONCE(!mq))
  910. return;
  911. for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
  912. if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
  913. IWL_DEBUG_TX_QUEUES(mvm,
  914. "mac80211 %d still stopped\n", q);
  915. continue;
  916. }
  917. ieee80211_wake_queue(mvm->hw, q);
  918. }
  919. }
  920. static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
  921. {
  922. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  923. unsigned long mq;
  924. spin_lock_bh(&mvm->queue_info_lock);
  925. mq = mvm->hw_queue_to_mac80211[hw_queue];
  926. spin_unlock_bh(&mvm->queue_info_lock);
  927. iwl_mvm_start_mac_queues(mvm, mq);
  928. }
  929. static void iwl_mvm_set_rfkill_state(struct iwl_mvm *mvm)
  930. {
  931. bool state = iwl_mvm_is_radio_killed(mvm);
  932. if (state)
  933. wake_up(&mvm->rx_sync_waitq);
  934. wiphy_rfkill_set_hw_state(mvm->hw->wiphy, state);
  935. }
  936. void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
  937. {
  938. if (state)
  939. set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
  940. else
  941. clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
  942. iwl_mvm_set_rfkill_state(mvm);
  943. }
  944. static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
  945. {
  946. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  947. bool calibrating = READ_ONCE(mvm->calibrating);
  948. if (state)
  949. set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
  950. else
  951. clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
  952. iwl_mvm_set_rfkill_state(mvm);
  953. /* iwl_run_init_mvm_ucode is waiting for results, abort it */
  954. if (calibrating)
  955. iwl_abort_notification_waits(&mvm->notif_wait);
  956. /*
  957. * Stop the device if we run OPERATIONAL firmware or if we are in the
  958. * middle of the calibrations.
  959. */
  960. return state && (mvm->fwrt.cur_fw_img != IWL_UCODE_INIT || calibrating);
  961. }
  962. static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
  963. {
  964. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  965. struct ieee80211_tx_info *info;
  966. info = IEEE80211_SKB_CB(skb);
  967. iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
  968. ieee80211_free_txskb(mvm->hw, skb);
  969. }
  970. struct iwl_mvm_reprobe {
  971. struct device *dev;
  972. struct work_struct work;
  973. };
  974. static void iwl_mvm_reprobe_wk(struct work_struct *wk)
  975. {
  976. struct iwl_mvm_reprobe *reprobe;
  977. reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
  978. if (device_reprobe(reprobe->dev))
  979. dev_err(reprobe->dev, "reprobe failed!\n");
  980. kfree(reprobe);
  981. module_put(THIS_MODULE);
  982. }
  983. void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
  984. {
  985. iwl_abort_notification_waits(&mvm->notif_wait);
  986. /*
  987. * This is a bit racy, but worst case we tell mac80211 about
  988. * a stopped/aborted scan when that was already done which
  989. * is not a problem. It is necessary to abort any os scan
  990. * here because mac80211 requires having the scan cleared
  991. * before restarting.
  992. * We'll reset the scan_status to NONE in restart cleanup in
  993. * the next start() call from mac80211. If restart isn't called
  994. * (no fw restart) scan status will stay busy.
  995. */
  996. iwl_mvm_report_scan_aborted(mvm);
  997. /*
  998. * If we're restarting already, don't cycle restarts.
  999. * If INIT fw asserted, it will likely fail again.
  1000. * If WoWLAN fw asserted, don't restart either, mac80211
  1001. * can't recover this since we're already half suspended.
  1002. */
  1003. if (!mvm->fw_restart && fw_error) {
  1004. iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert,
  1005. NULL);
  1006. } else if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
  1007. struct iwl_mvm_reprobe *reprobe;
  1008. IWL_ERR(mvm,
  1009. "Firmware error during reconfiguration - reprobe!\n");
  1010. /*
  1011. * get a module reference to avoid doing this while unloading
  1012. * anyway and to avoid scheduling a work with code that's
  1013. * being removed.
  1014. */
  1015. if (!try_module_get(THIS_MODULE)) {
  1016. IWL_ERR(mvm, "Module is being unloaded - abort\n");
  1017. return;
  1018. }
  1019. reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
  1020. if (!reprobe) {
  1021. module_put(THIS_MODULE);
  1022. return;
  1023. }
  1024. reprobe->dev = mvm->trans->dev;
  1025. INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
  1026. schedule_work(&reprobe->work);
  1027. } else if (mvm->fwrt.cur_fw_img == IWL_UCODE_REGULAR &&
  1028. mvm->hw_registered) {
  1029. /* don't let the transport/FW power down */
  1030. iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
  1031. if (fw_error && mvm->fw_restart > 0)
  1032. mvm->fw_restart--;
  1033. set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status);
  1034. ieee80211_restart_hw(mvm->hw);
  1035. }
  1036. }
  1037. static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
  1038. {
  1039. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1040. iwl_mvm_dump_nic_error_log(mvm);
  1041. iwl_mvm_nic_restart(mvm, true);
  1042. }
  1043. static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
  1044. {
  1045. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1046. WARN_ON(1);
  1047. iwl_mvm_nic_restart(mvm, true);
  1048. }
  1049. struct iwl_d0i3_iter_data {
  1050. struct iwl_mvm *mvm;
  1051. struct ieee80211_vif *connected_vif;
  1052. u8 ap_sta_id;
  1053. u8 vif_count;
  1054. u8 offloading_tid;
  1055. bool disable_offloading;
  1056. };
  1057. static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
  1058. struct ieee80211_vif *vif,
  1059. struct iwl_d0i3_iter_data *iter_data)
  1060. {
  1061. struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  1062. struct iwl_mvm_sta *mvmsta;
  1063. u32 available_tids = 0;
  1064. u8 tid;
  1065. if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
  1066. mvmvif->ap_sta_id == IWL_MVM_INVALID_STA))
  1067. return false;
  1068. mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
  1069. if (!mvmsta)
  1070. return false;
  1071. spin_lock_bh(&mvmsta->lock);
  1072. for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
  1073. struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
  1074. /*
  1075. * in case of pending tx packets, don't use this tid
  1076. * for offloading in order to prevent reuse of the same
  1077. * qos seq counters.
  1078. */
  1079. if (iwl_mvm_tid_queued(mvm, tid_data))
  1080. continue;
  1081. if (tid_data->state != IWL_AGG_OFF)
  1082. continue;
  1083. available_tids |= BIT(tid);
  1084. }
  1085. spin_unlock_bh(&mvmsta->lock);
  1086. /*
  1087. * disallow protocol offloading if we have no available tid
  1088. * (with no pending frames and no active aggregation,
  1089. * as we don't handle "holes" properly - the scheduler needs the
  1090. * frame's seq number and TFD index to match)
  1091. */
  1092. if (!available_tids)
  1093. return true;
  1094. /* for simplicity, just use the first available tid */
  1095. iter_data->offloading_tid = ffs(available_tids) - 1;
  1096. return false;
  1097. }
  1098. static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
  1099. struct ieee80211_vif *vif)
  1100. {
  1101. struct iwl_d0i3_iter_data *data = _data;
  1102. struct iwl_mvm *mvm = data->mvm;
  1103. struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  1104. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
  1105. IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
  1106. if (vif->type != NL80211_IFTYPE_STATION ||
  1107. !vif->bss_conf.assoc)
  1108. return;
  1109. /*
  1110. * in case of pending tx packets or active aggregations,
  1111. * avoid offloading features in order to prevent reuse of
  1112. * the same qos seq counters.
  1113. */
  1114. if (iwl_mvm_disallow_offloading(mvm, vif, data))
  1115. data->disable_offloading = true;
  1116. iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
  1117. iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
  1118. false, flags);
  1119. /*
  1120. * on init/association, mvm already configures POWER_TABLE_CMD
  1121. * and REPLY_MCAST_FILTER_CMD, so currently don't
  1122. * reconfigure them (we might want to use different
  1123. * params later on, though).
  1124. */
  1125. data->ap_sta_id = mvmvif->ap_sta_id;
  1126. data->vif_count++;
  1127. /*
  1128. * no new commands can be sent at this stage, so it's safe
  1129. * to save the vif pointer during d0i3 entrance.
  1130. */
  1131. data->connected_vif = vif;
  1132. }
  1133. static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
  1134. struct iwl_wowlan_config_cmd *cmd,
  1135. struct iwl_d0i3_iter_data *iter_data)
  1136. {
  1137. struct ieee80211_sta *ap_sta;
  1138. struct iwl_mvm_sta *mvm_ap_sta;
  1139. if (iter_data->ap_sta_id == IWL_MVM_INVALID_STA)
  1140. return;
  1141. rcu_read_lock();
  1142. ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
  1143. if (IS_ERR_OR_NULL(ap_sta))
  1144. goto out;
  1145. mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
  1146. cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
  1147. cmd->offloading_tid = iter_data->offloading_tid;
  1148. cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
  1149. ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
  1150. /*
  1151. * The d0i3 uCode takes care of the nonqos counters,
  1152. * so configure only the qos seq ones.
  1153. */
  1154. iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
  1155. out:
  1156. rcu_read_unlock();
  1157. }
  1158. int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
  1159. {
  1160. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1161. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
  1162. int ret;
  1163. struct iwl_d0i3_iter_data d0i3_iter_data = {
  1164. .mvm = mvm,
  1165. };
  1166. struct iwl_wowlan_config_cmd wowlan_config_cmd = {
  1167. .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
  1168. IWL_WOWLAN_WAKEUP_BEACON_MISS |
  1169. IWL_WOWLAN_WAKEUP_LINK_CHANGE),
  1170. };
  1171. struct iwl_d3_manager_config d3_cfg_cmd = {
  1172. .min_sleep_time = cpu_to_le32(1000),
  1173. .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
  1174. };
  1175. IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
  1176. if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
  1177. return -EINVAL;
  1178. set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
  1179. /*
  1180. * iwl_mvm_ref_sync takes a reference before checking the flag.
  1181. * so by checking there is no held reference we prevent a state
  1182. * in which iwl_mvm_ref_sync continues successfully while we
  1183. * configure the firmware to enter d0i3
  1184. */
  1185. if (iwl_mvm_ref_taken(mvm)) {
  1186. IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
  1187. clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
  1188. wake_up(&mvm->d0i3_exit_waitq);
  1189. return 1;
  1190. }
  1191. ieee80211_iterate_active_interfaces_atomic(mvm->hw,
  1192. IEEE80211_IFACE_ITER_NORMAL,
  1193. iwl_mvm_enter_d0i3_iterator,
  1194. &d0i3_iter_data);
  1195. if (d0i3_iter_data.vif_count == 1) {
  1196. mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
  1197. mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
  1198. } else {
  1199. WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
  1200. mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
  1201. mvm->d0i3_offloading = false;
  1202. }
  1203. /* make sure we have no running tx while configuring the seqno */
  1204. synchronize_net();
  1205. /* Flush the hw queues, in case something got queued during entry */
  1206. /* TODO new tx api */
  1207. if (iwl_mvm_has_new_tx_api(mvm)) {
  1208. WARN_ONCE(1, "d0i3: Need to implement flush TX queue\n");
  1209. } else {
  1210. ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm),
  1211. flags);
  1212. if (ret)
  1213. return ret;
  1214. }
  1215. /* configure wowlan configuration only if needed */
  1216. if (mvm->d0i3_ap_sta_id != IWL_MVM_INVALID_STA) {
  1217. /* wake on beacons only if beacon storing isn't supported */
  1218. if (!fw_has_capa(&mvm->fw->ucode_capa,
  1219. IWL_UCODE_TLV_CAPA_BEACON_STORING))
  1220. wowlan_config_cmd.wakeup_filter |=
  1221. cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
  1222. iwl_mvm_wowlan_config_key_params(mvm,
  1223. d0i3_iter_data.connected_vif,
  1224. true, flags);
  1225. iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
  1226. &d0i3_iter_data);
  1227. ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
  1228. sizeof(wowlan_config_cmd),
  1229. &wowlan_config_cmd);
  1230. if (ret)
  1231. return ret;
  1232. }
  1233. return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
  1234. flags | CMD_MAKE_TRANS_IDLE,
  1235. sizeof(d3_cfg_cmd), &d3_cfg_cmd);
  1236. }
  1237. static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
  1238. struct ieee80211_vif *vif)
  1239. {
  1240. struct iwl_mvm *mvm = _data;
  1241. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
  1242. IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
  1243. if (vif->type != NL80211_IFTYPE_STATION ||
  1244. !vif->bss_conf.assoc)
  1245. return;
  1246. iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
  1247. }
  1248. struct iwl_mvm_d0i3_exit_work_iter_data {
  1249. struct iwl_mvm *mvm;
  1250. struct iwl_wowlan_status *status;
  1251. u32 wakeup_reasons;
  1252. };
  1253. static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
  1254. struct ieee80211_vif *vif)
  1255. {
  1256. struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
  1257. struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  1258. u32 reasons = data->wakeup_reasons;
  1259. /* consider only the relevant station interface */
  1260. if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
  1261. data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
  1262. return;
  1263. if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
  1264. iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
  1265. else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
  1266. ieee80211_beacon_loss(vif);
  1267. else
  1268. iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
  1269. }
  1270. void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
  1271. {
  1272. struct ieee80211_sta *sta = NULL;
  1273. struct iwl_mvm_sta *mvm_ap_sta;
  1274. int i;
  1275. bool wake_queues = false;
  1276. lockdep_assert_held(&mvm->mutex);
  1277. spin_lock_bh(&mvm->d0i3_tx_lock);
  1278. if (mvm->d0i3_ap_sta_id == IWL_MVM_INVALID_STA)
  1279. goto out;
  1280. IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
  1281. /* get the sta in order to update seq numbers and re-enqueue skbs */
  1282. sta = rcu_dereference_protected(
  1283. mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
  1284. lockdep_is_held(&mvm->mutex));
  1285. if (IS_ERR_OR_NULL(sta)) {
  1286. sta = NULL;
  1287. goto out;
  1288. }
  1289. if (mvm->d0i3_offloading && qos_seq) {
  1290. /* update qos seq numbers if offloading was enabled */
  1291. mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
  1292. for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
  1293. u16 seq = le16_to_cpu(qos_seq[i]);
  1294. /* firmware stores last-used one, we store next one */
  1295. seq += 0x10;
  1296. mvm_ap_sta->tid_data[i].seq_number = seq;
  1297. }
  1298. }
  1299. out:
  1300. /* re-enqueue (or drop) all packets */
  1301. while (!skb_queue_empty(&mvm->d0i3_tx)) {
  1302. struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
  1303. if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
  1304. ieee80211_free_txskb(mvm->hw, skb);
  1305. /* if the skb_queue is not empty, we need to wake queues */
  1306. wake_queues = true;
  1307. }
  1308. clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
  1309. wake_up(&mvm->d0i3_exit_waitq);
  1310. mvm->d0i3_ap_sta_id = IWL_MVM_INVALID_STA;
  1311. if (wake_queues)
  1312. ieee80211_wake_queues(mvm->hw);
  1313. spin_unlock_bh(&mvm->d0i3_tx_lock);
  1314. }
  1315. static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
  1316. {
  1317. struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
  1318. struct iwl_host_cmd get_status_cmd = {
  1319. .id = WOWLAN_GET_STATUSES,
  1320. .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
  1321. };
  1322. struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
  1323. .mvm = mvm,
  1324. };
  1325. struct iwl_wowlan_status *status;
  1326. int ret;
  1327. u32 wakeup_reasons = 0;
  1328. __le16 *qos_seq = NULL;
  1329. mutex_lock(&mvm->mutex);
  1330. ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
  1331. if (ret)
  1332. goto out;
  1333. status = (void *)get_status_cmd.resp_pkt->data;
  1334. wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
  1335. qos_seq = status->qos_seq_ctr;
  1336. IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
  1337. iter_data.wakeup_reasons = wakeup_reasons;
  1338. iter_data.status = status;
  1339. ieee80211_iterate_active_interfaces(mvm->hw,
  1340. IEEE80211_IFACE_ITER_NORMAL,
  1341. iwl_mvm_d0i3_exit_work_iter,
  1342. &iter_data);
  1343. out:
  1344. iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
  1345. IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
  1346. wakeup_reasons);
  1347. /* qos_seq might point inside resp_pkt, so free it only now */
  1348. if (get_status_cmd.resp_pkt)
  1349. iwl_free_resp(&get_status_cmd);
  1350. /* the FW might have updated the regdomain */
  1351. iwl_mvm_update_changed_regdom(mvm);
  1352. iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
  1353. mutex_unlock(&mvm->mutex);
  1354. }
  1355. int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
  1356. {
  1357. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
  1358. CMD_WAKE_UP_TRANS;
  1359. int ret;
  1360. IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
  1361. if (WARN_ON_ONCE(mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR))
  1362. return -EINVAL;
  1363. mutex_lock(&mvm->d0i3_suspend_mutex);
  1364. if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
  1365. IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
  1366. __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
  1367. mutex_unlock(&mvm->d0i3_suspend_mutex);
  1368. return 0;
  1369. }
  1370. mutex_unlock(&mvm->d0i3_suspend_mutex);
  1371. ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
  1372. if (ret)
  1373. goto out;
  1374. ieee80211_iterate_active_interfaces_atomic(mvm->hw,
  1375. IEEE80211_IFACE_ITER_NORMAL,
  1376. iwl_mvm_exit_d0i3_iterator,
  1377. mvm);
  1378. out:
  1379. schedule_work(&mvm->d0i3_exit_work);
  1380. return ret;
  1381. }
  1382. int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
  1383. {
  1384. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1385. iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
  1386. return _iwl_mvm_exit_d0i3(mvm);
  1387. }
  1388. #define IWL_MVM_COMMON_OPS \
  1389. /* these could be differentiated */ \
  1390. .async_cb = iwl_mvm_async_cb, \
  1391. .queue_full = iwl_mvm_stop_sw_queue, \
  1392. .queue_not_full = iwl_mvm_wake_sw_queue, \
  1393. .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
  1394. .free_skb = iwl_mvm_free_skb, \
  1395. .nic_error = iwl_mvm_nic_error, \
  1396. .cmd_queue_full = iwl_mvm_cmd_queue_full, \
  1397. .nic_config = iwl_mvm_nic_config, \
  1398. .enter_d0i3 = iwl_mvm_enter_d0i3, \
  1399. .exit_d0i3 = iwl_mvm_exit_d0i3, \
  1400. /* as we only register one, these MUST be common! */ \
  1401. .start = iwl_op_mode_mvm_start, \
  1402. .stop = iwl_op_mode_mvm_stop
  1403. static const struct iwl_op_mode_ops iwl_mvm_ops = {
  1404. IWL_MVM_COMMON_OPS,
  1405. .rx = iwl_mvm_rx,
  1406. };
  1407. static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
  1408. struct napi_struct *napi,
  1409. struct iwl_rx_cmd_buffer *rxb,
  1410. unsigned int queue)
  1411. {
  1412. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1413. struct iwl_rx_packet *pkt = rxb_addr(rxb);
  1414. u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
  1415. if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
  1416. iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
  1417. else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
  1418. RX_QUEUES_NOTIFICATION)))
  1419. iwl_mvm_rx_queue_notif(mvm, rxb, queue);
  1420. else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
  1421. iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
  1422. }
  1423. static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
  1424. IWL_MVM_COMMON_OPS,
  1425. .rx = iwl_mvm_rx_mq,
  1426. .rx_rss = iwl_mvm_rx_mq_rss,
  1427. };