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. *
  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(PROT_OFFLOAD_GROUP, STORED_BEACON_NTF,
  273. iwl_mvm_rx_stored_beacon_notif, RX_HANDLER_SYNC),
  274. RX_HANDLER_GRP(DATA_PATH_GROUP, MU_GROUP_MGMT_NOTIF,
  275. iwl_mvm_mu_mimo_grp_notif, RX_HANDLER_SYNC),
  276. };
  277. #undef RX_HANDLER
  278. #undef RX_HANDLER_GRP
  279. /* Please keep this array *SORTED* by hex value.
  280. * Access is done through binary search
  281. */
  282. static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = {
  283. HCMD_NAME(MVM_ALIVE),
  284. HCMD_NAME(REPLY_ERROR),
  285. HCMD_NAME(ECHO_CMD),
  286. HCMD_NAME(INIT_COMPLETE_NOTIF),
  287. HCMD_NAME(PHY_CONTEXT_CMD),
  288. HCMD_NAME(DBG_CFG),
  289. HCMD_NAME(ANTENNA_COUPLING_NOTIFICATION),
  290. HCMD_NAME(SCAN_CFG_CMD),
  291. HCMD_NAME(SCAN_REQ_UMAC),
  292. HCMD_NAME(SCAN_ABORT_UMAC),
  293. HCMD_NAME(SCAN_COMPLETE_UMAC),
  294. HCMD_NAME(TOF_CMD),
  295. HCMD_NAME(TOF_NOTIFICATION),
  296. HCMD_NAME(BA_WINDOW_STATUS_NOTIFICATION_ID),
  297. HCMD_NAME(ADD_STA_KEY),
  298. HCMD_NAME(ADD_STA),
  299. HCMD_NAME(REMOVE_STA),
  300. HCMD_NAME(FW_GET_ITEM_CMD),
  301. HCMD_NAME(TX_CMD),
  302. HCMD_NAME(SCD_QUEUE_CFG),
  303. HCMD_NAME(TXPATH_FLUSH),
  304. HCMD_NAME(MGMT_MCAST_KEY),
  305. HCMD_NAME(WEP_KEY),
  306. HCMD_NAME(SHARED_MEM_CFG),
  307. HCMD_NAME(TDLS_CHANNEL_SWITCH_CMD),
  308. HCMD_NAME(MAC_CONTEXT_CMD),
  309. HCMD_NAME(TIME_EVENT_CMD),
  310. HCMD_NAME(TIME_EVENT_NOTIFICATION),
  311. HCMD_NAME(BINDING_CONTEXT_CMD),
  312. HCMD_NAME(TIME_QUOTA_CMD),
  313. HCMD_NAME(NON_QOS_TX_COUNTER_CMD),
  314. HCMD_NAME(LQ_CMD),
  315. HCMD_NAME(FW_PAGING_BLOCK_CMD),
  316. HCMD_NAME(SCAN_OFFLOAD_REQUEST_CMD),
  317. HCMD_NAME(SCAN_OFFLOAD_ABORT_CMD),
  318. HCMD_NAME(HOT_SPOT_CMD),
  319. HCMD_NAME(SCAN_OFFLOAD_PROFILES_QUERY_CMD),
  320. HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_CONFIG_CMD),
  321. HCMD_NAME(SCAN_OFFLOAD_HOTSPOTS_QUERY_CMD),
  322. HCMD_NAME(BT_COEX_UPDATE_SW_BOOST),
  323. HCMD_NAME(BT_COEX_UPDATE_CORUN_LUT),
  324. HCMD_NAME(BT_COEX_UPDATE_REDUCED_TXP),
  325. HCMD_NAME(BT_COEX_CI),
  326. HCMD_NAME(PHY_CONFIGURATION_CMD),
  327. HCMD_NAME(CALIB_RES_NOTIF_PHY_DB),
  328. HCMD_NAME(PHY_DB_CMD),
  329. HCMD_NAME(SCAN_OFFLOAD_COMPLETE),
  330. HCMD_NAME(SCAN_OFFLOAD_UPDATE_PROFILES_CMD),
  331. HCMD_NAME(SCAN_OFFLOAD_CONFIG_CMD),
  332. HCMD_NAME(POWER_TABLE_CMD),
  333. HCMD_NAME(PSM_UAPSD_AP_MISBEHAVING_NOTIFICATION),
  334. HCMD_NAME(REPLY_THERMAL_MNG_BACKOFF),
  335. HCMD_NAME(DC2DC_CONFIG_CMD),
  336. HCMD_NAME(NVM_ACCESS_CMD),
  337. HCMD_NAME(SET_CALIB_DEFAULT_CMD),
  338. HCMD_NAME(BEACON_NOTIFICATION),
  339. HCMD_NAME(BEACON_TEMPLATE_CMD),
  340. HCMD_NAME(TX_ANT_CONFIGURATION_CMD),
  341. HCMD_NAME(BT_CONFIG),
  342. HCMD_NAME(STATISTICS_CMD),
  343. HCMD_NAME(STATISTICS_NOTIFICATION),
  344. HCMD_NAME(EOSP_NOTIFICATION),
  345. HCMD_NAME(REDUCE_TX_POWER_CMD),
  346. HCMD_NAME(CARD_STATE_CMD),
  347. HCMD_NAME(CARD_STATE_NOTIFICATION),
  348. HCMD_NAME(MISSED_BEACONS_NOTIFICATION),
  349. HCMD_NAME(TDLS_CONFIG_CMD),
  350. HCMD_NAME(MAC_PM_POWER_TABLE),
  351. HCMD_NAME(TDLS_CHANNEL_SWITCH_NOTIFICATION),
  352. HCMD_NAME(MFUART_LOAD_NOTIFICATION),
  353. HCMD_NAME(RSS_CONFIG_CMD),
  354. HCMD_NAME(SCAN_ITERATION_COMPLETE_UMAC),
  355. HCMD_NAME(REPLY_RX_PHY_CMD),
  356. HCMD_NAME(REPLY_RX_MPDU_CMD),
  357. HCMD_NAME(BA_NOTIF),
  358. HCMD_NAME(MCC_UPDATE_CMD),
  359. HCMD_NAME(MCC_CHUB_UPDATE_CMD),
  360. HCMD_NAME(MARKER_CMD),
  361. HCMD_NAME(BT_COEX_PRIO_TABLE),
  362. HCMD_NAME(BT_COEX_PROT_ENV),
  363. HCMD_NAME(BT_PROFILE_NOTIFICATION),
  364. HCMD_NAME(BCAST_FILTER_CMD),
  365. HCMD_NAME(MCAST_FILTER_CMD),
  366. HCMD_NAME(REPLY_SF_CFG_CMD),
  367. HCMD_NAME(REPLY_BEACON_FILTERING_CMD),
  368. HCMD_NAME(D3_CONFIG_CMD),
  369. HCMD_NAME(PROT_OFFLOAD_CONFIG_CMD),
  370. HCMD_NAME(OFFLOADS_QUERY_CMD),
  371. HCMD_NAME(REMOTE_WAKE_CONFIG_CMD),
  372. HCMD_NAME(MATCH_FOUND_NOTIFICATION),
  373. HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER),
  374. HCMD_NAME(DTS_MEASUREMENT_NOTIFICATION),
  375. HCMD_NAME(WOWLAN_PATTERNS),
  376. HCMD_NAME(WOWLAN_CONFIGURATION),
  377. HCMD_NAME(WOWLAN_TSC_RSC_PARAM),
  378. HCMD_NAME(WOWLAN_TKIP_PARAM),
  379. HCMD_NAME(WOWLAN_KEK_KCK_MATERIAL),
  380. HCMD_NAME(WOWLAN_GET_STATUSES),
  381. HCMD_NAME(WOWLAN_TX_POWER_PER_DB),
  382. HCMD_NAME(SCAN_ITERATION_COMPLETE),
  383. HCMD_NAME(D0I3_END_CMD),
  384. HCMD_NAME(LTR_CONFIG),
  385. HCMD_NAME(REPLY_DEBUG_CMD),
  386. };
  387. /* Please keep this array *SORTED* by hex value.
  388. * Access is done through binary search
  389. */
  390. static const struct iwl_hcmd_names iwl_mvm_system_names[] = {
  391. HCMD_NAME(SHARED_MEM_CFG_CMD),
  392. };
  393. /* Please keep this array *SORTED* by hex value.
  394. * Access is done through binary search
  395. */
  396. static const struct iwl_hcmd_names iwl_mvm_mac_conf_names[] = {
  397. HCMD_NAME(LINK_QUALITY_MEASUREMENT_CMD),
  398. HCMD_NAME(LINK_QUALITY_MEASUREMENT_COMPLETE_NOTIF),
  399. HCMD_NAME(CHANNEL_SWITCH_NOA_NOTIF),
  400. };
  401. /* Please keep this array *SORTED* by hex value.
  402. * Access is done through binary search
  403. */
  404. static const struct iwl_hcmd_names iwl_mvm_phy_names[] = {
  405. HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE),
  406. HCMD_NAME(CTDP_CONFIG_CMD),
  407. HCMD_NAME(TEMP_REPORTING_THRESHOLDS_CMD),
  408. HCMD_NAME(CT_KILL_NOTIFICATION),
  409. HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE),
  410. };
  411. /* Please keep this array *SORTED* by hex value.
  412. * Access is done through binary search
  413. */
  414. static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
  415. HCMD_NAME(UPDATE_MU_GROUPS_CMD),
  416. HCMD_NAME(TRIGGER_RX_QUEUES_NOTIF_CMD),
  417. HCMD_NAME(MU_GROUP_MGMT_NOTIF),
  418. HCMD_NAME(RX_QUEUES_NOTIFICATION),
  419. };
  420. /* Please keep this array *SORTED* by hex value.
  421. * Access is done through binary search
  422. */
  423. static const struct iwl_hcmd_names iwl_mvm_prot_offload_names[] = {
  424. HCMD_NAME(STORED_BEACON_NTF),
  425. };
  426. static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
  427. [LEGACY_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
  428. [LONG_GROUP] = HCMD_ARR(iwl_mvm_legacy_names),
  429. [SYSTEM_GROUP] = HCMD_ARR(iwl_mvm_system_names),
  430. [MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
  431. [PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
  432. [DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
  433. [PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
  434. };
  435. /* this forward declaration can avoid to export the function */
  436. static void iwl_mvm_async_handlers_wk(struct work_struct *wk);
  437. static void iwl_mvm_d0i3_exit_work(struct work_struct *wk);
  438. static u32 calc_min_backoff(struct iwl_trans *trans, const struct iwl_cfg *cfg)
  439. {
  440. const struct iwl_pwr_tx_backoff *pwr_tx_backoff = cfg->pwr_tx_backoffs;
  441. if (!pwr_tx_backoff)
  442. return 0;
  443. while (pwr_tx_backoff->pwr) {
  444. if (trans->dflt_pwr_limit >= pwr_tx_backoff->pwr)
  445. return pwr_tx_backoff->backoff;
  446. pwr_tx_backoff++;
  447. }
  448. return 0;
  449. }
  450. static void iwl_mvm_fw_error_dump_wk(struct work_struct *work);
  451. static void iwl_mvm_tx_unblock_dwork(struct work_struct *work)
  452. {
  453. struct iwl_mvm *mvm =
  454. container_of(work, struct iwl_mvm, cs_tx_unblock_dwork.work);
  455. struct ieee80211_vif *tx_blocked_vif;
  456. struct iwl_mvm_vif *mvmvif;
  457. mutex_lock(&mvm->mutex);
  458. tx_blocked_vif =
  459. rcu_dereference_protected(mvm->csa_tx_blocked_vif,
  460. lockdep_is_held(&mvm->mutex));
  461. if (!tx_blocked_vif)
  462. goto unlock;
  463. mvmvif = iwl_mvm_vif_from_mac80211(tx_blocked_vif);
  464. iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, false);
  465. RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
  466. unlock:
  467. mutex_unlock(&mvm->mutex);
  468. }
  469. static struct iwl_op_mode *
  470. iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
  471. const struct iwl_fw *fw, struct dentry *dbgfs_dir)
  472. {
  473. struct ieee80211_hw *hw;
  474. struct iwl_op_mode *op_mode;
  475. struct iwl_mvm *mvm;
  476. struct iwl_trans_config trans_cfg = {};
  477. static const u8 no_reclaim_cmds[] = {
  478. TX_CMD,
  479. };
  480. int err, scan_size;
  481. u32 min_backoff;
  482. /*
  483. * We use IWL_MVM_STATION_COUNT to check the validity of the station
  484. * index all over the driver - check that its value corresponds to the
  485. * array size.
  486. */
  487. BUILD_BUG_ON(ARRAY_SIZE(mvm->fw_id_to_mac_id) != IWL_MVM_STATION_COUNT);
  488. /********************************
  489. * 1. Allocating and configuring HW data
  490. ********************************/
  491. hw = ieee80211_alloc_hw(sizeof(struct iwl_op_mode) +
  492. sizeof(struct iwl_mvm),
  493. &iwl_mvm_hw_ops);
  494. if (!hw)
  495. return NULL;
  496. if (cfg->max_rx_agg_size)
  497. hw->max_rx_aggregation_subframes = cfg->max_rx_agg_size;
  498. if (cfg->max_tx_agg_size)
  499. hw->max_tx_aggregation_subframes = cfg->max_tx_agg_size;
  500. op_mode = hw->priv;
  501. mvm = IWL_OP_MODE_GET_MVM(op_mode);
  502. mvm->dev = trans->dev;
  503. mvm->trans = trans;
  504. mvm->cfg = cfg;
  505. mvm->fw = fw;
  506. mvm->hw = hw;
  507. if (iwl_mvm_has_new_rx_api(mvm)) {
  508. op_mode->ops = &iwl_mvm_ops_mq;
  509. trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_desc);
  510. } else {
  511. op_mode->ops = &iwl_mvm_ops;
  512. trans->rx_mpdu_cmd_hdr_size =
  513. sizeof(struct iwl_rx_mpdu_res_start);
  514. if (WARN_ON(trans->num_rx_queues > 1))
  515. goto out_free;
  516. }
  517. mvm->restart_fw = iwlwifi_mod_params.restart_fw ? -1 : 0;
  518. if (!iwl_mvm_is_dqa_supported(mvm)) {
  519. mvm->last_agg_queue = mvm->cfg->base_params->num_of_queues - 1;
  520. if (mvm->cfg->base_params->num_of_queues == 16) {
  521. mvm->aux_queue = 11;
  522. mvm->first_agg_queue = 12;
  523. } else {
  524. mvm->aux_queue = 15;
  525. mvm->first_agg_queue = 16;
  526. }
  527. } else {
  528. mvm->aux_queue = IWL_MVM_DQA_AUX_QUEUE;
  529. mvm->first_agg_queue = IWL_MVM_DQA_MIN_DATA_QUEUE;
  530. mvm->last_agg_queue = IWL_MVM_DQA_MAX_DATA_QUEUE;
  531. }
  532. mvm->sf_state = SF_UNINIT;
  533. mvm->cur_ucode = IWL_UCODE_INIT;
  534. mvm->drop_bcn_ap_mode = true;
  535. mutex_init(&mvm->mutex);
  536. mutex_init(&mvm->d0i3_suspend_mutex);
  537. spin_lock_init(&mvm->async_handlers_lock);
  538. INIT_LIST_HEAD(&mvm->time_event_list);
  539. INIT_LIST_HEAD(&mvm->aux_roc_te_list);
  540. INIT_LIST_HEAD(&mvm->async_handlers_list);
  541. spin_lock_init(&mvm->time_event_lock);
  542. spin_lock_init(&mvm->queue_info_lock);
  543. INIT_WORK(&mvm->async_handlers_wk, iwl_mvm_async_handlers_wk);
  544. INIT_WORK(&mvm->roc_done_wk, iwl_mvm_roc_done_wk);
  545. INIT_WORK(&mvm->sta_drained_wk, iwl_mvm_sta_drained_wk);
  546. INIT_WORK(&mvm->d0i3_exit_work, iwl_mvm_d0i3_exit_work);
  547. INIT_DELAYED_WORK(&mvm->fw_dump_wk, iwl_mvm_fw_error_dump_wk);
  548. INIT_DELAYED_WORK(&mvm->tdls_cs.dwork, iwl_mvm_tdls_ch_switch_work);
  549. INIT_DELAYED_WORK(&mvm->scan_timeout_dwork, iwl_mvm_scan_timeout_wk);
  550. INIT_WORK(&mvm->add_stream_wk, iwl_mvm_add_new_dqa_stream_wk);
  551. spin_lock_init(&mvm->d0i3_tx_lock);
  552. spin_lock_init(&mvm->refs_lock);
  553. skb_queue_head_init(&mvm->d0i3_tx);
  554. init_waitqueue_head(&mvm->d0i3_exit_waitq);
  555. init_waitqueue_head(&mvm->rx_sync_waitq);
  556. atomic_set(&mvm->queue_sync_counter, 0);
  557. SET_IEEE80211_DEV(mvm->hw, mvm->trans->dev);
  558. INIT_DELAYED_WORK(&mvm->cs_tx_unblock_dwork, iwl_mvm_tx_unblock_dwork);
  559. /*
  560. * Populate the state variables that the transport layer needs
  561. * to know about.
  562. */
  563. trans_cfg.op_mode = op_mode;
  564. trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
  565. trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
  566. switch (iwlwifi_mod_params.amsdu_size) {
  567. case IWL_AMSDU_DEF:
  568. case IWL_AMSDU_4K:
  569. trans_cfg.rx_buf_size = IWL_AMSDU_4K;
  570. break;
  571. case IWL_AMSDU_8K:
  572. trans_cfg.rx_buf_size = IWL_AMSDU_8K;
  573. break;
  574. case IWL_AMSDU_12K:
  575. trans_cfg.rx_buf_size = IWL_AMSDU_12K;
  576. break;
  577. default:
  578. pr_err("%s: Unsupported amsdu_size: %d\n", KBUILD_MODNAME,
  579. iwlwifi_mod_params.amsdu_size);
  580. trans_cfg.rx_buf_size = IWL_AMSDU_4K;
  581. }
  582. /* the hardware splits the A-MSDU */
  583. if (mvm->cfg->mq_rx_supported)
  584. trans_cfg.rx_buf_size = IWL_AMSDU_4K;
  585. trans->wide_cmd_header = true;
  586. trans_cfg.bc_table_dword = true;
  587. trans_cfg.command_groups = iwl_mvm_groups;
  588. trans_cfg.command_groups_size = ARRAY_SIZE(iwl_mvm_groups);
  589. if (iwl_mvm_is_dqa_supported(mvm))
  590. trans_cfg.cmd_queue = IWL_MVM_DQA_CMD_QUEUE;
  591. else
  592. trans_cfg.cmd_queue = IWL_MVM_CMD_QUEUE;
  593. trans_cfg.cmd_fifo = IWL_MVM_TX_FIFO_CMD;
  594. trans_cfg.scd_set_active = true;
  595. trans_cfg.cb_data_offs = offsetof(struct ieee80211_tx_info,
  596. driver_data[2]);
  597. trans_cfg.sdio_adma_addr = fw->sdio_adma_addr;
  598. trans_cfg.sw_csum_tx = IWL_MVM_SW_TX_CSUM_OFFLOAD;
  599. /* Set a short watchdog for the command queue */
  600. trans_cfg.cmd_q_wdg_timeout =
  601. iwl_mvm_get_wd_timeout(mvm, NULL, false, true);
  602. snprintf(mvm->hw->wiphy->fw_version,
  603. sizeof(mvm->hw->wiphy->fw_version),
  604. "%s", fw->fw_version);
  605. /* Configure transport layer */
  606. iwl_trans_configure(mvm->trans, &trans_cfg);
  607. trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
  608. trans->dbg_dest_tlv = mvm->fw->dbg_dest_tlv;
  609. trans->dbg_dest_reg_num = mvm->fw->dbg_dest_reg_num;
  610. memcpy(trans->dbg_conf_tlv, mvm->fw->dbg_conf_tlv,
  611. sizeof(trans->dbg_conf_tlv));
  612. trans->dbg_trigger_tlv = mvm->fw->dbg_trigger_tlv;
  613. /* set up notification wait support */
  614. iwl_notification_wait_init(&mvm->notif_wait);
  615. /* Init phy db */
  616. mvm->phy_db = iwl_phy_db_init(trans);
  617. if (!mvm->phy_db) {
  618. IWL_ERR(mvm, "Cannot init phy_db\n");
  619. goto out_free;
  620. }
  621. IWL_INFO(mvm, "Detected %s, REV=0x%X\n",
  622. mvm->cfg->name, mvm->trans->hw_rev);
  623. if (iwlwifi_mod_params.nvm_file)
  624. mvm->nvm_file_name = iwlwifi_mod_params.nvm_file;
  625. else
  626. IWL_DEBUG_EEPROM(mvm->trans->dev,
  627. "working without external nvm file\n");
  628. err = iwl_trans_start_hw(mvm->trans);
  629. if (err)
  630. goto out_free;
  631. mutex_lock(&mvm->mutex);
  632. iwl_mvm_ref(mvm, IWL_MVM_REF_INIT_UCODE);
  633. err = iwl_run_init_mvm_ucode(mvm, true);
  634. if (!err || !iwlmvm_mod_params.init_dbg)
  635. iwl_mvm_stop_device(mvm);
  636. iwl_mvm_unref(mvm, IWL_MVM_REF_INIT_UCODE);
  637. mutex_unlock(&mvm->mutex);
  638. /* returns 0 if successful, 1 if success but in rfkill */
  639. if (err < 0 && !iwlmvm_mod_params.init_dbg) {
  640. IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", err);
  641. goto out_free;
  642. }
  643. scan_size = iwl_mvm_scan_size(mvm);
  644. mvm->scan_cmd = kmalloc(scan_size, GFP_KERNEL);
  645. if (!mvm->scan_cmd)
  646. goto out_free;
  647. /* Set EBS as successful as long as not stated otherwise by the FW. */
  648. mvm->last_ebs_successful = true;
  649. err = iwl_mvm_mac_setup_register(mvm);
  650. if (err)
  651. goto out_free;
  652. min_backoff = calc_min_backoff(trans, cfg);
  653. iwl_mvm_thermal_initialize(mvm, min_backoff);
  654. err = iwl_mvm_dbgfs_register(mvm, dbgfs_dir);
  655. if (err)
  656. goto out_unregister;
  657. memset(&mvm->rx_stats, 0, sizeof(struct mvm_statistics_rx));
  658. /* The transport always starts with a taken reference, we can
  659. * release it now if d0i3 is supported */
  660. if (iwl_mvm_is_d0i3_supported(mvm))
  661. iwl_trans_unref(mvm->trans);
  662. iwl_mvm_tof_init(mvm);
  663. return op_mode;
  664. out_unregister:
  665. ieee80211_unregister_hw(mvm->hw);
  666. iwl_mvm_leds_exit(mvm);
  667. iwl_mvm_thermal_exit(mvm);
  668. out_free:
  669. flush_delayed_work(&mvm->fw_dump_wk);
  670. iwl_phy_db_free(mvm->phy_db);
  671. kfree(mvm->scan_cmd);
  672. iwl_trans_op_mode_leave(trans);
  673. ieee80211_free_hw(mvm->hw);
  674. return NULL;
  675. }
  676. static void iwl_op_mode_mvm_stop(struct iwl_op_mode *op_mode)
  677. {
  678. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  679. int i;
  680. /* If d0i3 is supported, we have released the reference that
  681. * the transport started with, so we should take it back now
  682. * that we are leaving.
  683. */
  684. if (iwl_mvm_is_d0i3_supported(mvm))
  685. iwl_trans_ref(mvm->trans);
  686. iwl_mvm_leds_exit(mvm);
  687. iwl_mvm_thermal_exit(mvm);
  688. ieee80211_unregister_hw(mvm->hw);
  689. kfree(mvm->scan_cmd);
  690. kfree(mvm->mcast_filter_cmd);
  691. mvm->mcast_filter_cmd = NULL;
  692. #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_IWLWIFI_DEBUGFS)
  693. kfree(mvm->d3_resume_sram);
  694. #endif
  695. iwl_trans_op_mode_leave(mvm->trans);
  696. iwl_phy_db_free(mvm->phy_db);
  697. mvm->phy_db = NULL;
  698. iwl_free_nvm_data(mvm->nvm_data);
  699. for (i = 0; i < NVM_MAX_NUM_SECTIONS; i++)
  700. kfree(mvm->nvm_sections[i].data);
  701. iwl_mvm_tof_clean(mvm);
  702. mutex_destroy(&mvm->mutex);
  703. mutex_destroy(&mvm->d0i3_suspend_mutex);
  704. ieee80211_free_hw(mvm->hw);
  705. }
  706. struct iwl_async_handler_entry {
  707. struct list_head list;
  708. struct iwl_rx_cmd_buffer rxb;
  709. enum iwl_rx_handler_context context;
  710. void (*fn)(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
  711. };
  712. void iwl_mvm_async_handlers_purge(struct iwl_mvm *mvm)
  713. {
  714. struct iwl_async_handler_entry *entry, *tmp;
  715. spin_lock_bh(&mvm->async_handlers_lock);
  716. list_for_each_entry_safe(entry, tmp, &mvm->async_handlers_list, list) {
  717. iwl_free_rxb(&entry->rxb);
  718. list_del(&entry->list);
  719. kfree(entry);
  720. }
  721. spin_unlock_bh(&mvm->async_handlers_lock);
  722. }
  723. static void iwl_mvm_async_handlers_wk(struct work_struct *wk)
  724. {
  725. struct iwl_mvm *mvm =
  726. container_of(wk, struct iwl_mvm, async_handlers_wk);
  727. struct iwl_async_handler_entry *entry, *tmp;
  728. LIST_HEAD(local_list);
  729. /* Ensure that we are not in stop flow (check iwl_mvm_mac_stop) */
  730. /*
  731. * Sync with Rx path with a lock. Remove all the entries from this list,
  732. * add them to a local one (lock free), and then handle them.
  733. */
  734. spin_lock_bh(&mvm->async_handlers_lock);
  735. list_splice_init(&mvm->async_handlers_list, &local_list);
  736. spin_unlock_bh(&mvm->async_handlers_lock);
  737. list_for_each_entry_safe(entry, tmp, &local_list, list) {
  738. if (entry->context == RX_HANDLER_ASYNC_LOCKED)
  739. mutex_lock(&mvm->mutex);
  740. entry->fn(mvm, &entry->rxb);
  741. iwl_free_rxb(&entry->rxb);
  742. list_del(&entry->list);
  743. if (entry->context == RX_HANDLER_ASYNC_LOCKED)
  744. mutex_unlock(&mvm->mutex);
  745. kfree(entry);
  746. }
  747. }
  748. static inline void iwl_mvm_rx_check_trigger(struct iwl_mvm *mvm,
  749. struct iwl_rx_packet *pkt)
  750. {
  751. struct iwl_fw_dbg_trigger_tlv *trig;
  752. struct iwl_fw_dbg_trigger_cmd *cmds_trig;
  753. int i;
  754. if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF))
  755. return;
  756. trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_FW_NOTIF);
  757. cmds_trig = (void *)trig->data;
  758. if (!iwl_fw_dbg_trigger_check_stop(mvm, NULL, trig))
  759. return;
  760. for (i = 0; i < ARRAY_SIZE(cmds_trig->cmds); i++) {
  761. /* don't collect on CMD 0 */
  762. if (!cmds_trig->cmds[i].cmd_id)
  763. break;
  764. if (cmds_trig->cmds[i].cmd_id != pkt->hdr.cmd ||
  765. cmds_trig->cmds[i].group_id != pkt->hdr.group_id)
  766. continue;
  767. iwl_mvm_fw_dbg_collect_trig(mvm, trig,
  768. "CMD 0x%02x.%02x received",
  769. pkt->hdr.group_id, pkt->hdr.cmd);
  770. break;
  771. }
  772. }
  773. static void iwl_mvm_rx_common(struct iwl_mvm *mvm,
  774. struct iwl_rx_cmd_buffer *rxb,
  775. struct iwl_rx_packet *pkt)
  776. {
  777. int i;
  778. iwl_mvm_rx_check_trigger(mvm, pkt);
  779. /*
  780. * Do the notification wait before RX handlers so
  781. * even if the RX handler consumes the RXB we have
  782. * access to it in the notification wait entry.
  783. */
  784. iwl_notification_wait_notify(&mvm->notif_wait, pkt);
  785. for (i = 0; i < ARRAY_SIZE(iwl_mvm_rx_handlers); i++) {
  786. const struct iwl_rx_handlers *rx_h = &iwl_mvm_rx_handlers[i];
  787. struct iwl_async_handler_entry *entry;
  788. if (rx_h->cmd_id != WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd))
  789. continue;
  790. if (rx_h->context == RX_HANDLER_SYNC) {
  791. rx_h->fn(mvm, rxb);
  792. return;
  793. }
  794. entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
  795. /* we can't do much... */
  796. if (!entry)
  797. return;
  798. entry->rxb._page = rxb_steal_page(rxb);
  799. entry->rxb._offset = rxb->_offset;
  800. entry->rxb._rx_page_order = rxb->_rx_page_order;
  801. entry->fn = rx_h->fn;
  802. entry->context = rx_h->context;
  803. spin_lock(&mvm->async_handlers_lock);
  804. list_add_tail(&entry->list, &mvm->async_handlers_list);
  805. spin_unlock(&mvm->async_handlers_lock);
  806. schedule_work(&mvm->async_handlers_wk);
  807. break;
  808. }
  809. }
  810. static void iwl_mvm_rx(struct iwl_op_mode *op_mode,
  811. struct napi_struct *napi,
  812. struct iwl_rx_cmd_buffer *rxb)
  813. {
  814. struct iwl_rx_packet *pkt = rxb_addr(rxb);
  815. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  816. u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
  817. if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
  818. iwl_mvm_rx_rx_mpdu(mvm, napi, rxb);
  819. else if (cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_PHY_CMD))
  820. iwl_mvm_rx_rx_phy_cmd(mvm, rxb);
  821. else
  822. iwl_mvm_rx_common(mvm, rxb, pkt);
  823. }
  824. static void iwl_mvm_rx_mq(struct iwl_op_mode *op_mode,
  825. struct napi_struct *napi,
  826. struct iwl_rx_cmd_buffer *rxb)
  827. {
  828. struct iwl_rx_packet *pkt = rxb_addr(rxb);
  829. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  830. u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
  831. if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
  832. iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, 0);
  833. else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
  834. RX_QUEUES_NOTIFICATION)))
  835. iwl_mvm_rx_queue_notif(mvm, rxb, 0);
  836. else if (cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE))
  837. iwl_mvm_rx_frame_release(mvm, napi, rxb, 0);
  838. else
  839. iwl_mvm_rx_common(mvm, rxb, pkt);
  840. }
  841. void iwl_mvm_stop_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
  842. {
  843. int q;
  844. if (WARN_ON_ONCE(!mq))
  845. return;
  846. for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
  847. if (atomic_inc_return(&mvm->mac80211_queue_stop_count[q]) > 1) {
  848. IWL_DEBUG_TX_QUEUES(mvm,
  849. "mac80211 %d already stopped\n", q);
  850. continue;
  851. }
  852. ieee80211_stop_queue(mvm->hw, q);
  853. }
  854. }
  855. static void iwl_mvm_async_cb(struct iwl_op_mode *op_mode,
  856. const struct iwl_device_cmd *cmd)
  857. {
  858. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  859. /*
  860. * For now, we only set the CMD_WANT_ASYNC_CALLBACK for ADD_STA
  861. * commands that need to block the Tx queues.
  862. */
  863. iwl_trans_block_txq_ptrs(mvm->trans, false);
  864. }
  865. static void iwl_mvm_stop_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
  866. {
  867. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  868. unsigned long mq;
  869. spin_lock_bh(&mvm->queue_info_lock);
  870. mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
  871. spin_unlock_bh(&mvm->queue_info_lock);
  872. iwl_mvm_stop_mac_queues(mvm, mq);
  873. }
  874. void iwl_mvm_start_mac_queues(struct iwl_mvm *mvm, unsigned long mq)
  875. {
  876. int q;
  877. if (WARN_ON_ONCE(!mq))
  878. return;
  879. for_each_set_bit(q, &mq, IEEE80211_MAX_QUEUES) {
  880. if (atomic_dec_return(&mvm->mac80211_queue_stop_count[q]) > 0) {
  881. IWL_DEBUG_TX_QUEUES(mvm,
  882. "mac80211 %d still stopped\n", q);
  883. continue;
  884. }
  885. ieee80211_wake_queue(mvm->hw, q);
  886. }
  887. }
  888. static void iwl_mvm_wake_sw_queue(struct iwl_op_mode *op_mode, int hw_queue)
  889. {
  890. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  891. unsigned long mq;
  892. spin_lock_bh(&mvm->queue_info_lock);
  893. mq = mvm->queue_info[hw_queue].hw_queue_to_mac80211;
  894. spin_unlock_bh(&mvm->queue_info_lock);
  895. iwl_mvm_start_mac_queues(mvm, mq);
  896. }
  897. void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state)
  898. {
  899. if (state)
  900. set_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
  901. else
  902. clear_bit(IWL_MVM_STATUS_HW_CTKILL, &mvm->status);
  903. wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
  904. }
  905. static bool iwl_mvm_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
  906. {
  907. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  908. bool calibrating = ACCESS_ONCE(mvm->calibrating);
  909. if (state)
  910. set_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
  911. else
  912. clear_bit(IWL_MVM_STATUS_HW_RFKILL, &mvm->status);
  913. wiphy_rfkill_set_hw_state(mvm->hw->wiphy, iwl_mvm_is_radio_killed(mvm));
  914. /* iwl_run_init_mvm_ucode is waiting for results, abort it */
  915. if (calibrating)
  916. iwl_abort_notification_waits(&mvm->notif_wait);
  917. /*
  918. * Stop the device if we run OPERATIONAL firmware or if we are in the
  919. * middle of the calibrations.
  920. */
  921. return state && (mvm->cur_ucode != IWL_UCODE_INIT || calibrating);
  922. }
  923. static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
  924. {
  925. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  926. struct ieee80211_tx_info *info;
  927. info = IEEE80211_SKB_CB(skb);
  928. iwl_trans_free_tx_cmd(mvm->trans, info->driver_data[1]);
  929. ieee80211_free_txskb(mvm->hw, skb);
  930. }
  931. struct iwl_mvm_reprobe {
  932. struct device *dev;
  933. struct work_struct work;
  934. };
  935. static void iwl_mvm_reprobe_wk(struct work_struct *wk)
  936. {
  937. struct iwl_mvm_reprobe *reprobe;
  938. reprobe = container_of(wk, struct iwl_mvm_reprobe, work);
  939. if (device_reprobe(reprobe->dev))
  940. dev_err(reprobe->dev, "reprobe failed!\n");
  941. kfree(reprobe);
  942. module_put(THIS_MODULE);
  943. }
  944. static void iwl_mvm_fw_error_dump_wk(struct work_struct *work)
  945. {
  946. struct iwl_mvm *mvm =
  947. container_of(work, struct iwl_mvm, fw_dump_wk.work);
  948. if (iwl_mvm_ref_sync(mvm, IWL_MVM_REF_FW_DBG_COLLECT))
  949. return;
  950. mutex_lock(&mvm->mutex);
  951. /* stop recording */
  952. if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
  953. iwl_set_bits_prph(mvm->trans, MON_BUFF_SAMPLE_CTL, 0x100);
  954. } else {
  955. iwl_write_prph(mvm->trans, DBGC_IN_SAMPLE, 0);
  956. /* wait before we collect the data till the DBGC stop */
  957. udelay(100);
  958. }
  959. iwl_mvm_fw_error_dump(mvm);
  960. /* start recording again if the firmware is not crashed */
  961. WARN_ON_ONCE((!test_bit(STATUS_FW_ERROR, &mvm->trans->status)) &&
  962. mvm->fw->dbg_dest_tlv &&
  963. iwl_mvm_start_fw_dbg_conf(mvm, mvm->fw_dbg_conf));
  964. mutex_unlock(&mvm->mutex);
  965. iwl_mvm_unref(mvm, IWL_MVM_REF_FW_DBG_COLLECT);
  966. }
  967. void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
  968. {
  969. iwl_abort_notification_waits(&mvm->notif_wait);
  970. /*
  971. * This is a bit racy, but worst case we tell mac80211 about
  972. * a stopped/aborted scan when that was already done which
  973. * is not a problem. It is necessary to abort any os scan
  974. * here because mac80211 requires having the scan cleared
  975. * before restarting.
  976. * We'll reset the scan_status to NONE in restart cleanup in
  977. * the next start() call from mac80211. If restart isn't called
  978. * (no fw restart) scan status will stay busy.
  979. */
  980. iwl_mvm_report_scan_aborted(mvm);
  981. /*
  982. * If we're restarting already, don't cycle restarts.
  983. * If INIT fw asserted, it will likely fail again.
  984. * If WoWLAN fw asserted, don't restart either, mac80211
  985. * can't recover this since we're already half suspended.
  986. */
  987. if (!mvm->restart_fw && fw_error) {
  988. iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
  989. NULL);
  990. } else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
  991. &mvm->status)) {
  992. struct iwl_mvm_reprobe *reprobe;
  993. IWL_ERR(mvm,
  994. "Firmware error during reconfiguration - reprobe!\n");
  995. /*
  996. * get a module reference to avoid doing this while unloading
  997. * anyway and to avoid scheduling a work with code that's
  998. * being removed.
  999. */
  1000. if (!try_module_get(THIS_MODULE)) {
  1001. IWL_ERR(mvm, "Module is being unloaded - abort\n");
  1002. return;
  1003. }
  1004. reprobe = kzalloc(sizeof(*reprobe), GFP_ATOMIC);
  1005. if (!reprobe) {
  1006. module_put(THIS_MODULE);
  1007. return;
  1008. }
  1009. reprobe->dev = mvm->trans->dev;
  1010. INIT_WORK(&reprobe->work, iwl_mvm_reprobe_wk);
  1011. schedule_work(&reprobe->work);
  1012. } else if (mvm->cur_ucode == IWL_UCODE_REGULAR) {
  1013. /* don't let the transport/FW power down */
  1014. iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
  1015. if (fw_error && mvm->restart_fw > 0)
  1016. mvm->restart_fw--;
  1017. ieee80211_restart_hw(mvm->hw);
  1018. }
  1019. }
  1020. static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode)
  1021. {
  1022. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1023. iwl_mvm_dump_nic_error_log(mvm);
  1024. iwl_mvm_nic_restart(mvm, true);
  1025. }
  1026. static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode)
  1027. {
  1028. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1029. WARN_ON(1);
  1030. iwl_mvm_nic_restart(mvm, true);
  1031. }
  1032. struct iwl_d0i3_iter_data {
  1033. struct iwl_mvm *mvm;
  1034. struct ieee80211_vif *connected_vif;
  1035. u8 ap_sta_id;
  1036. u8 vif_count;
  1037. u8 offloading_tid;
  1038. bool disable_offloading;
  1039. };
  1040. static bool iwl_mvm_disallow_offloading(struct iwl_mvm *mvm,
  1041. struct ieee80211_vif *vif,
  1042. struct iwl_d0i3_iter_data *iter_data)
  1043. {
  1044. struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  1045. struct iwl_mvm_sta *mvmsta;
  1046. u32 available_tids = 0;
  1047. u8 tid;
  1048. if (WARN_ON(vif->type != NL80211_IFTYPE_STATION ||
  1049. mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT))
  1050. return false;
  1051. mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->ap_sta_id);
  1052. if (!mvmsta)
  1053. return false;
  1054. spin_lock_bh(&mvmsta->lock);
  1055. for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
  1056. struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];
  1057. /*
  1058. * in case of pending tx packets, don't use this tid
  1059. * for offloading in order to prevent reuse of the same
  1060. * qos seq counters.
  1061. */
  1062. if (iwl_mvm_tid_queued(tid_data))
  1063. continue;
  1064. if (tid_data->state != IWL_AGG_OFF)
  1065. continue;
  1066. available_tids |= BIT(tid);
  1067. }
  1068. spin_unlock_bh(&mvmsta->lock);
  1069. /*
  1070. * disallow protocol offloading if we have no available tid
  1071. * (with no pending frames and no active aggregation,
  1072. * as we don't handle "holes" properly - the scheduler needs the
  1073. * frame's seq number and TFD index to match)
  1074. */
  1075. if (!available_tids)
  1076. return true;
  1077. /* for simplicity, just use the first available tid */
  1078. iter_data->offloading_tid = ffs(available_tids) - 1;
  1079. return false;
  1080. }
  1081. static void iwl_mvm_enter_d0i3_iterator(void *_data, u8 *mac,
  1082. struct ieee80211_vif *vif)
  1083. {
  1084. struct iwl_d0i3_iter_data *data = _data;
  1085. struct iwl_mvm *mvm = data->mvm;
  1086. struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  1087. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
  1088. IWL_DEBUG_RPM(mvm, "entering D0i3 - vif %pM\n", vif->addr);
  1089. if (vif->type != NL80211_IFTYPE_STATION ||
  1090. !vif->bss_conf.assoc)
  1091. return;
  1092. /*
  1093. * in case of pending tx packets or active aggregations,
  1094. * avoid offloading features in order to prevent reuse of
  1095. * the same qos seq counters.
  1096. */
  1097. if (iwl_mvm_disallow_offloading(mvm, vif, data))
  1098. data->disable_offloading = true;
  1099. iwl_mvm_update_d0i3_power_mode(mvm, vif, true, flags);
  1100. iwl_mvm_send_proto_offload(mvm, vif, data->disable_offloading,
  1101. false, flags);
  1102. /*
  1103. * on init/association, mvm already configures POWER_TABLE_CMD
  1104. * and REPLY_MCAST_FILTER_CMD, so currently don't
  1105. * reconfigure them (we might want to use different
  1106. * params later on, though).
  1107. */
  1108. data->ap_sta_id = mvmvif->ap_sta_id;
  1109. data->vif_count++;
  1110. /*
  1111. * no new commands can be sent at this stage, so it's safe
  1112. * to save the vif pointer during d0i3 entrance.
  1113. */
  1114. data->connected_vif = vif;
  1115. }
  1116. static void iwl_mvm_set_wowlan_data(struct iwl_mvm *mvm,
  1117. struct iwl_wowlan_config_cmd *cmd,
  1118. struct iwl_d0i3_iter_data *iter_data)
  1119. {
  1120. struct ieee80211_sta *ap_sta;
  1121. struct iwl_mvm_sta *mvm_ap_sta;
  1122. if (iter_data->ap_sta_id == IWL_MVM_STATION_COUNT)
  1123. return;
  1124. rcu_read_lock();
  1125. ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[iter_data->ap_sta_id]);
  1126. if (IS_ERR_OR_NULL(ap_sta))
  1127. goto out;
  1128. mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
  1129. cmd->is_11n_connection = ap_sta->ht_cap.ht_supported;
  1130. cmd->offloading_tid = iter_data->offloading_tid;
  1131. cmd->flags = ENABLE_L3_FILTERING | ENABLE_NBNS_FILTERING |
  1132. ENABLE_DHCP_FILTERING | ENABLE_STORE_BEACON;
  1133. /*
  1134. * The d0i3 uCode takes care of the nonqos counters,
  1135. * so configure only the qos seq ones.
  1136. */
  1137. iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, cmd);
  1138. out:
  1139. rcu_read_unlock();
  1140. }
  1141. int iwl_mvm_enter_d0i3(struct iwl_op_mode *op_mode)
  1142. {
  1143. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1144. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE;
  1145. int ret;
  1146. struct iwl_d0i3_iter_data d0i3_iter_data = {
  1147. .mvm = mvm,
  1148. };
  1149. struct iwl_wowlan_config_cmd wowlan_config_cmd = {
  1150. .wakeup_filter = cpu_to_le32(IWL_WOWLAN_WAKEUP_RX_FRAME |
  1151. IWL_WOWLAN_WAKEUP_BEACON_MISS |
  1152. IWL_WOWLAN_WAKEUP_LINK_CHANGE),
  1153. };
  1154. struct iwl_d3_manager_config d3_cfg_cmd = {
  1155. .min_sleep_time = cpu_to_le32(1000),
  1156. .wakeup_flags = cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR),
  1157. };
  1158. IWL_DEBUG_RPM(mvm, "MVM entering D0i3\n");
  1159. if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
  1160. return -EINVAL;
  1161. set_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
  1162. /*
  1163. * iwl_mvm_ref_sync takes a reference before checking the flag.
  1164. * so by checking there is no held reference we prevent a state
  1165. * in which iwl_mvm_ref_sync continues successfully while we
  1166. * configure the firmware to enter d0i3
  1167. */
  1168. if (iwl_mvm_ref_taken(mvm)) {
  1169. IWL_DEBUG_RPM(mvm->trans, "abort d0i3 due to taken ref\n");
  1170. clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
  1171. wake_up(&mvm->d0i3_exit_waitq);
  1172. return 1;
  1173. }
  1174. ieee80211_iterate_active_interfaces_atomic(mvm->hw,
  1175. IEEE80211_IFACE_ITER_NORMAL,
  1176. iwl_mvm_enter_d0i3_iterator,
  1177. &d0i3_iter_data);
  1178. if (d0i3_iter_data.vif_count == 1) {
  1179. mvm->d0i3_ap_sta_id = d0i3_iter_data.ap_sta_id;
  1180. mvm->d0i3_offloading = !d0i3_iter_data.disable_offloading;
  1181. } else {
  1182. WARN_ON_ONCE(d0i3_iter_data.vif_count > 1);
  1183. mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
  1184. mvm->d0i3_offloading = false;
  1185. }
  1186. /* make sure we have no running tx while configuring the seqno */
  1187. synchronize_net();
  1188. /* Flush the hw queues, in case something got queued during entry */
  1189. ret = iwl_mvm_flush_tx_path(mvm, iwl_mvm_flushable_queues(mvm), flags);
  1190. if (ret)
  1191. return ret;
  1192. /* configure wowlan configuration only if needed */
  1193. if (mvm->d0i3_ap_sta_id != IWL_MVM_STATION_COUNT) {
  1194. /* wake on beacons only if beacon storing isn't supported */
  1195. if (!fw_has_capa(&mvm->fw->ucode_capa,
  1196. IWL_UCODE_TLV_CAPA_BEACON_STORING))
  1197. wowlan_config_cmd.wakeup_filter |=
  1198. cpu_to_le32(IWL_WOWLAN_WAKEUP_BCN_FILTERING);
  1199. iwl_mvm_wowlan_config_key_params(mvm,
  1200. d0i3_iter_data.connected_vif,
  1201. true, flags);
  1202. iwl_mvm_set_wowlan_data(mvm, &wowlan_config_cmd,
  1203. &d0i3_iter_data);
  1204. ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, flags,
  1205. sizeof(wowlan_config_cmd),
  1206. &wowlan_config_cmd);
  1207. if (ret)
  1208. return ret;
  1209. }
  1210. return iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD,
  1211. flags | CMD_MAKE_TRANS_IDLE,
  1212. sizeof(d3_cfg_cmd), &d3_cfg_cmd);
  1213. }
  1214. static void iwl_mvm_exit_d0i3_iterator(void *_data, u8 *mac,
  1215. struct ieee80211_vif *vif)
  1216. {
  1217. struct iwl_mvm *mvm = _data;
  1218. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO;
  1219. IWL_DEBUG_RPM(mvm, "exiting D0i3 - vif %pM\n", vif->addr);
  1220. if (vif->type != NL80211_IFTYPE_STATION ||
  1221. !vif->bss_conf.assoc)
  1222. return;
  1223. iwl_mvm_update_d0i3_power_mode(mvm, vif, false, flags);
  1224. }
  1225. struct iwl_mvm_d0i3_exit_work_iter_data {
  1226. struct iwl_mvm *mvm;
  1227. struct iwl_wowlan_status *status;
  1228. u32 wakeup_reasons;
  1229. };
  1230. static void iwl_mvm_d0i3_exit_work_iter(void *_data, u8 *mac,
  1231. struct ieee80211_vif *vif)
  1232. {
  1233. struct iwl_mvm_d0i3_exit_work_iter_data *data = _data;
  1234. struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
  1235. u32 reasons = data->wakeup_reasons;
  1236. /* consider only the relevant station interface */
  1237. if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc ||
  1238. data->mvm->d0i3_ap_sta_id != mvmvif->ap_sta_id)
  1239. return;
  1240. if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)
  1241. iwl_mvm_connection_loss(data->mvm, vif, "D0i3");
  1242. else if (reasons & IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON)
  1243. ieee80211_beacon_loss(vif);
  1244. else
  1245. iwl_mvm_d0i3_update_keys(data->mvm, vif, data->status);
  1246. }
  1247. void iwl_mvm_d0i3_enable_tx(struct iwl_mvm *mvm, __le16 *qos_seq)
  1248. {
  1249. struct ieee80211_sta *sta = NULL;
  1250. struct iwl_mvm_sta *mvm_ap_sta;
  1251. int i;
  1252. bool wake_queues = false;
  1253. lockdep_assert_held(&mvm->mutex);
  1254. spin_lock_bh(&mvm->d0i3_tx_lock);
  1255. if (mvm->d0i3_ap_sta_id == IWL_MVM_STATION_COUNT)
  1256. goto out;
  1257. IWL_DEBUG_RPM(mvm, "re-enqueue packets\n");
  1258. /* get the sta in order to update seq numbers and re-enqueue skbs */
  1259. sta = rcu_dereference_protected(
  1260. mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id],
  1261. lockdep_is_held(&mvm->mutex));
  1262. if (IS_ERR_OR_NULL(sta)) {
  1263. sta = NULL;
  1264. goto out;
  1265. }
  1266. if (mvm->d0i3_offloading && qos_seq) {
  1267. /* update qos seq numbers if offloading was enabled */
  1268. mvm_ap_sta = iwl_mvm_sta_from_mac80211(sta);
  1269. for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
  1270. u16 seq = le16_to_cpu(qos_seq[i]);
  1271. /* firmware stores last-used one, we store next one */
  1272. seq += 0x10;
  1273. mvm_ap_sta->tid_data[i].seq_number = seq;
  1274. }
  1275. }
  1276. out:
  1277. /* re-enqueue (or drop) all packets */
  1278. while (!skb_queue_empty(&mvm->d0i3_tx)) {
  1279. struct sk_buff *skb = __skb_dequeue(&mvm->d0i3_tx);
  1280. if (!sta || iwl_mvm_tx_skb(mvm, skb, sta))
  1281. ieee80211_free_txskb(mvm->hw, skb);
  1282. /* if the skb_queue is not empty, we need to wake queues */
  1283. wake_queues = true;
  1284. }
  1285. clear_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status);
  1286. wake_up(&mvm->d0i3_exit_waitq);
  1287. mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
  1288. if (wake_queues)
  1289. ieee80211_wake_queues(mvm->hw);
  1290. spin_unlock_bh(&mvm->d0i3_tx_lock);
  1291. }
  1292. static void iwl_mvm_d0i3_exit_work(struct work_struct *wk)
  1293. {
  1294. struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm, d0i3_exit_work);
  1295. struct iwl_host_cmd get_status_cmd = {
  1296. .id = WOWLAN_GET_STATUSES,
  1297. .flags = CMD_HIGH_PRIO | CMD_WANT_SKB,
  1298. };
  1299. struct iwl_mvm_d0i3_exit_work_iter_data iter_data = {
  1300. .mvm = mvm,
  1301. };
  1302. struct iwl_wowlan_status *status;
  1303. int ret;
  1304. u32 wakeup_reasons = 0;
  1305. __le16 *qos_seq = NULL;
  1306. mutex_lock(&mvm->mutex);
  1307. ret = iwl_mvm_send_cmd(mvm, &get_status_cmd);
  1308. if (ret)
  1309. goto out;
  1310. if (!get_status_cmd.resp_pkt)
  1311. goto out;
  1312. status = (void *)get_status_cmd.resp_pkt->data;
  1313. wakeup_reasons = le32_to_cpu(status->wakeup_reasons);
  1314. qos_seq = status->qos_seq_ctr;
  1315. IWL_DEBUG_RPM(mvm, "wakeup reasons: 0x%x\n", wakeup_reasons);
  1316. iter_data.wakeup_reasons = wakeup_reasons;
  1317. iter_data.status = status;
  1318. ieee80211_iterate_active_interfaces(mvm->hw,
  1319. IEEE80211_IFACE_ITER_NORMAL,
  1320. iwl_mvm_d0i3_exit_work_iter,
  1321. &iter_data);
  1322. out:
  1323. iwl_mvm_d0i3_enable_tx(mvm, qos_seq);
  1324. IWL_DEBUG_INFO(mvm, "d0i3 exit completed (wakeup reasons: 0x%x)\n",
  1325. wakeup_reasons);
  1326. /* qos_seq might point inside resp_pkt, so free it only now */
  1327. if (get_status_cmd.resp_pkt)
  1328. iwl_free_resp(&get_status_cmd);
  1329. /* the FW might have updated the regdomain */
  1330. iwl_mvm_update_changed_regdom(mvm);
  1331. iwl_mvm_unref(mvm, IWL_MVM_REF_EXIT_WORK);
  1332. mutex_unlock(&mvm->mutex);
  1333. }
  1334. int _iwl_mvm_exit_d0i3(struct iwl_mvm *mvm)
  1335. {
  1336. u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
  1337. CMD_WAKE_UP_TRANS;
  1338. int ret;
  1339. IWL_DEBUG_RPM(mvm, "MVM exiting D0i3\n");
  1340. if (WARN_ON_ONCE(mvm->cur_ucode != IWL_UCODE_REGULAR))
  1341. return -EINVAL;
  1342. mutex_lock(&mvm->d0i3_suspend_mutex);
  1343. if (test_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags)) {
  1344. IWL_DEBUG_RPM(mvm, "Deferring d0i3 exit until resume\n");
  1345. __set_bit(D0I3_PENDING_WAKEUP, &mvm->d0i3_suspend_flags);
  1346. mutex_unlock(&mvm->d0i3_suspend_mutex);
  1347. return 0;
  1348. }
  1349. mutex_unlock(&mvm->d0i3_suspend_mutex);
  1350. ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
  1351. if (ret)
  1352. goto out;
  1353. ieee80211_iterate_active_interfaces_atomic(mvm->hw,
  1354. IEEE80211_IFACE_ITER_NORMAL,
  1355. iwl_mvm_exit_d0i3_iterator,
  1356. mvm);
  1357. out:
  1358. schedule_work(&mvm->d0i3_exit_work);
  1359. return ret;
  1360. }
  1361. int iwl_mvm_exit_d0i3(struct iwl_op_mode *op_mode)
  1362. {
  1363. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1364. iwl_mvm_ref(mvm, IWL_MVM_REF_EXIT_WORK);
  1365. return _iwl_mvm_exit_d0i3(mvm);
  1366. }
  1367. #define IWL_MVM_COMMON_OPS \
  1368. /* these could be differentiated */ \
  1369. .async_cb = iwl_mvm_async_cb, \
  1370. .queue_full = iwl_mvm_stop_sw_queue, \
  1371. .queue_not_full = iwl_mvm_wake_sw_queue, \
  1372. .hw_rf_kill = iwl_mvm_set_hw_rfkill_state, \
  1373. .free_skb = iwl_mvm_free_skb, \
  1374. .nic_error = iwl_mvm_nic_error, \
  1375. .cmd_queue_full = iwl_mvm_cmd_queue_full, \
  1376. .nic_config = iwl_mvm_nic_config, \
  1377. .enter_d0i3 = iwl_mvm_enter_d0i3, \
  1378. .exit_d0i3 = iwl_mvm_exit_d0i3, \
  1379. /* as we only register one, these MUST be common! */ \
  1380. .start = iwl_op_mode_mvm_start, \
  1381. .stop = iwl_op_mode_mvm_stop
  1382. static const struct iwl_op_mode_ops iwl_mvm_ops = {
  1383. IWL_MVM_COMMON_OPS,
  1384. .rx = iwl_mvm_rx,
  1385. };
  1386. static void iwl_mvm_rx_mq_rss(struct iwl_op_mode *op_mode,
  1387. struct napi_struct *napi,
  1388. struct iwl_rx_cmd_buffer *rxb,
  1389. unsigned int queue)
  1390. {
  1391. struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode);
  1392. struct iwl_rx_packet *pkt = rxb_addr(rxb);
  1393. u16 cmd = WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd);
  1394. if (unlikely(cmd == WIDE_ID(LEGACY_GROUP, FRAME_RELEASE)))
  1395. iwl_mvm_rx_frame_release(mvm, napi, rxb, queue);
  1396. else if (unlikely(cmd == WIDE_ID(DATA_PATH_GROUP,
  1397. RX_QUEUES_NOTIFICATION)))
  1398. iwl_mvm_rx_queue_notif(mvm, rxb, queue);
  1399. else if (likely(cmd == WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)))
  1400. iwl_mvm_rx_mpdu_mq(mvm, napi, rxb, queue);
  1401. }
  1402. static const struct iwl_op_mode_ops iwl_mvm_ops_mq = {
  1403. IWL_MVM_COMMON_OPS,
  1404. .rx = iwl_mvm_rx_mq,
  1405. .rx_rss = iwl_mvm_rx_mq_rss,
  1406. };