Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1 | /* |
Dustin Brown | 4ea21db | 2018-01-05 14:13:17 -0800 | [diff] [blame] | 2 | * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved. |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 3 | * |
| 4 | * Previously licensed under the ISC license by Qualcomm Atheros, Inc. |
| 5 | * |
| 6 | * |
| 7 | * Permission to use, copy, modify, and/or distribute this software for |
| 8 | * any purpose with or without fee is hereby granted, provided that the |
| 9 | * above copyright notice and this permission notice appear in all |
| 10 | * copies. |
| 11 | * |
| 12 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL |
| 13 | * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED |
| 14 | * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE |
| 15 | * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL |
| 16 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR |
| 17 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 18 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR |
| 19 | * PERFORMANCE OF THIS SOFTWARE. |
| 20 | */ |
| 21 | |
| 22 | /* |
| 23 | * This file was originally distributed by Qualcomm Atheros, Inc. |
| 24 | * under proprietary terms before Copyright ownership was assigned |
| 25 | * to the Linux Foundation. |
| 26 | */ |
| 27 | |
| 28 | /** |
| 29 | * wlan_hdd_tsf.c - WLAN Host Device Driver tsf related implementation |
| 30 | */ |
| 31 | |
| 32 | #include "wlan_hdd_main.h" |
Jeff Johnson | dde3449 | 2016-10-05 16:28:04 -0700 | [diff] [blame] | 33 | #include "wlan_hdd_tsf.h" |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 34 | #include "wma_api.h" |
Sandeep Puligilla | fdd201e | 2017-02-02 18:43:46 -0800 | [diff] [blame] | 35 | #include <qca_vendor.h> |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 36 | |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 37 | static struct completion tsf_sync_get_completion_evt; |
| 38 | #define WLAN_TSF_SYNC_GET_TIMEOUT 2000 |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 39 | |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 40 | /** |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 41 | * enum hdd_tsf_op_result - result of tsf operation |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 42 | * |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 43 | * HDD_TSF_OP_SUCC: succeed |
| 44 | * HDD_TSF_OP_FAIL: fail |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 45 | */ |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 46 | enum hdd_tsf_op_result { |
| 47 | HDD_TSF_OP_SUCC, |
| 48 | HDD_TSF_OP_FAIL |
| 49 | }; |
| 50 | |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 51 | #ifdef WLAN_FEATURE_TSF_PLUS |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 52 | static inline void hdd_set_th_sync_status(struct hdd_adapter *adapter, |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 53 | bool initialized) |
| 54 | { |
| 55 | qdf_atomic_set(&adapter->tsf_sync_ready_flag, |
| 56 | (initialized ? 1 : 0)); |
| 57 | } |
| 58 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 59 | static inline bool hdd_get_th_sync_status(struct hdd_adapter *adapter) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 60 | { |
| 61 | return qdf_atomic_read(&adapter->tsf_sync_ready_flag) != 0; |
| 62 | } |
| 63 | |
| 64 | #else |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 65 | static inline bool hdd_get_th_sync_status(struct hdd_adapter *adapter) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 66 | { |
| 67 | return true; |
| 68 | } |
| 69 | #endif |
| 70 | |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 71 | static |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 72 | enum hdd_tsf_get_state hdd_tsf_check_conn_state(struct hdd_adapter *adapter) |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 73 | { |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 74 | enum hdd_tsf_get_state ret = TSF_RETURN; |
Jeff Johnson | 40dae4e | 2017-08-29 14:00:25 -0700 | [diff] [blame] | 75 | struct hdd_station_ctx *hdd_sta_ctx; |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 76 | |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 77 | if (adapter->device_mode == QDF_STA_MODE || |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 78 | adapter->device_mode == QDF_P2P_CLIENT_MODE) { |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 79 | hdd_sta_ctx = WLAN_HDD_GET_STATION_CTX_PTR(adapter); |
| 80 | if (hdd_sta_ctx->conn_info.connState != |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 81 | eConnectionState_Associated) { |
| 82 | hdd_err("failed to cap tsf, not connect with ap"); |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 83 | ret = TSF_STA_NOT_CONNECTED_NO_TSF; |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 84 | } |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 85 | } else if ((adapter->device_mode == QDF_SAP_MODE || |
| 86 | adapter->device_mode == QDF_P2P_GO_MODE) && |
| 87 | !(test_bit(SOFTAP_BSS_STARTED, |
| 88 | &adapter->event_flags))) { |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 89 | hdd_err("Soft AP / P2p GO not beaconing"); |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 90 | ret = TSF_SAP_NOT_STARTED_NO_TSF; |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 91 | } |
| 92 | return ret; |
| 93 | } |
| 94 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 95 | static bool hdd_tsf_is_initialized(struct hdd_adapter *adapter) |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 96 | { |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 97 | struct hdd_context *hddctx; |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 98 | |
| 99 | if (!adapter) { |
| 100 | hdd_err("invalid adapter"); |
| 101 | return false; |
| 102 | } |
| 103 | |
| 104 | hddctx = WLAN_HDD_GET_CTX(adapter); |
| 105 | if (!hddctx) { |
| 106 | hdd_err("invalid hdd context"); |
| 107 | return false; |
| 108 | } |
| 109 | |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 110 | if (!qdf_atomic_read(&hddctx->tsf_ready_flag) || |
| 111 | !hdd_get_th_sync_status(adapter)) { |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 112 | hdd_err("TSF is not initialized"); |
| 113 | return false; |
| 114 | } |
| 115 | |
| 116 | return true; |
| 117 | } |
| 118 | |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 119 | /** |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 120 | * hdd_tsf_reset_gpio() - Reset TSF GPIO used for host timer sync |
| 121 | * @adapter: pointer to adapter |
| 122 | * |
| 123 | * This function send WMI command to reset GPIO configured in FW after |
| 124 | * TSF get operation. |
| 125 | * |
| 126 | * Return: TSF_RETURN on Success, TSF_RESET_GPIO_FAIL on failure |
| 127 | */ |
| 128 | #ifdef QCA_WIFI_3_0 |
Jeff Johnson | 85b5c11 | 2017-08-11 15:15:23 -0700 | [diff] [blame] | 129 | static int hdd_tsf_reset_gpio(struct hdd_adapter *adapter) |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 130 | { |
| 131 | /* No GPIO Host timer sync for integrated WIFI Device */ |
| 132 | return TSF_RETURN; |
| 133 | } |
| 134 | #else |
Jeff Johnson | 85b5c11 | 2017-08-11 15:15:23 -0700 | [diff] [blame] | 135 | static int hdd_tsf_reset_gpio(struct hdd_adapter *adapter) |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 136 | { |
| 137 | int ret; |
Srinivas Girigowda | 388dea8 | 2017-03-25 11:49:56 -0700 | [diff] [blame] | 138 | |
Jeff Johnson | 1b780e4 | 2017-10-31 14:11:45 -0700 | [diff] [blame] | 139 | ret = wma_cli_set_command((int)adapter->session_id, |
| 140 | (int)GEN_PARAM_RESET_TSF_GPIO, adapter->session_id, |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 141 | GEN_CMD); |
| 142 | |
| 143 | if (ret != 0) { |
| 144 | hdd_err("tsf reset GPIO fail "); |
| 145 | ret = TSF_RESET_GPIO_FAIL; |
| 146 | } else { |
| 147 | ret = TSF_RETURN; |
| 148 | } |
| 149 | return ret; |
| 150 | } |
| 151 | #endif |
| 152 | |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 153 | static enum hdd_tsf_op_result hdd_capture_tsf_internal( |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 154 | struct hdd_adapter *adapter, uint32_t *buf, int len) |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 155 | { |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 156 | int ret; |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 157 | struct hdd_context *hddctx; |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 158 | |
| 159 | if (adapter == NULL || buf == NULL) { |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 160 | hdd_err("invalid pointer"); |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 161 | return HDD_TSF_OP_FAIL; |
| 162 | } |
| 163 | |
| 164 | if (len != 1) |
| 165 | return HDD_TSF_OP_FAIL; |
| 166 | |
| 167 | hddctx = WLAN_HDD_GET_CTX(adapter); |
| 168 | if (!hddctx) { |
| 169 | hdd_err("invalid hdd context"); |
| 170 | return HDD_TSF_OP_FAIL; |
| 171 | } |
| 172 | |
| 173 | if (!hdd_tsf_is_initialized(adapter)) { |
| 174 | buf[0] = TSF_NOT_READY; |
| 175 | return HDD_TSF_OP_SUCC; |
| 176 | } |
| 177 | |
| 178 | buf[0] = hdd_tsf_check_conn_state(adapter); |
| 179 | if (buf[0] != TSF_RETURN) |
| 180 | return HDD_TSF_OP_SUCC; |
| 181 | |
| 182 | if (qdf_atomic_inc_return(&hddctx->cap_tsf_flag) > 1) { |
| 183 | hdd_err("current in capture state"); |
| 184 | buf[0] = TSF_CURRENT_IN_CAP_STATE; |
| 185 | return HDD_TSF_OP_SUCC; |
| 186 | } |
| 187 | |
| 188 | /* record adapter for cap_tsf_irq_handler */ |
| 189 | hddctx->cap_tsf_context = adapter; |
| 190 | |
| 191 | hdd_err("+ioctl issue cap tsf cmd"); |
| 192 | |
| 193 | /* Reset TSF value for new capture */ |
| 194 | adapter->cur_target_time = 0; |
| 195 | |
| 196 | buf[0] = TSF_RETURN; |
| 197 | init_completion(&tsf_sync_get_completion_evt); |
Jeff Johnson | 1b780e4 | 2017-10-31 14:11:45 -0700 | [diff] [blame] | 198 | ret = wma_cli_set_command((int)adapter->session_id, |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 199 | (int)GEN_PARAM_CAPTURE_TSF, |
Jeff Johnson | 1b780e4 | 2017-10-31 14:11:45 -0700 | [diff] [blame] | 200 | adapter->session_id, GEN_CMD); |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 201 | if (QDF_STATUS_SUCCESS != ret) { |
| 202 | hdd_err("cap tsf fail"); |
| 203 | buf[0] = TSF_CAPTURE_FAIL; |
| 204 | hddctx->cap_tsf_context = NULL; |
| 205 | qdf_atomic_set(&hddctx->cap_tsf_flag, 0); |
| 206 | return HDD_TSF_OP_SUCC; |
| 207 | } |
| 208 | hdd_err("-ioctl return cap tsf cmd"); |
| 209 | return HDD_TSF_OP_SUCC; |
| 210 | } |
| 211 | |
| 212 | static enum hdd_tsf_op_result hdd_indicate_tsf_internal( |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 213 | struct hdd_adapter *adapter, uint32_t *buf, int len) |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 214 | { |
| 215 | int ret; |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 216 | struct hdd_context *hddctx; |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 217 | |
| 218 | if (!adapter || !buf) { |
| 219 | hdd_err("invalid pointer"); |
| 220 | return HDD_TSF_OP_FAIL; |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | if (len != 3) |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 224 | return HDD_TSF_OP_FAIL; |
| 225 | |
| 226 | hddctx = WLAN_HDD_GET_CTX(adapter); |
| 227 | if (!hddctx) { |
| 228 | hdd_err("invalid hdd context"); |
| 229 | return HDD_TSF_OP_FAIL; |
| 230 | } |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 231 | |
| 232 | buf[1] = 0; |
| 233 | buf[2] = 0; |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 234 | |
| 235 | if (!hdd_tsf_is_initialized(adapter)) { |
| 236 | buf[0] = TSF_NOT_READY; |
| 237 | return HDD_TSF_OP_SUCC; |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 238 | } |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 239 | |
| 240 | buf[0] = hdd_tsf_check_conn_state(adapter); |
| 241 | if (buf[0] != TSF_RETURN) |
| 242 | return HDD_TSF_OP_SUCC; |
| 243 | |
| 244 | if (adapter->cur_target_time == 0) { |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 245 | hdd_info("TSF value not received"); |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 246 | buf[0] = TSF_NOT_RETURNED_BY_FW; |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 247 | return HDD_TSF_OP_SUCC; |
Jeff Johnson | a5fb218 | 2017-10-06 20:27:38 -0700 | [diff] [blame] | 248 | } |
| 249 | |
| 250 | buf[0] = TSF_RETURN; |
| 251 | buf[1] = (uint32_t)(adapter->cur_target_time & 0xffffffff); |
| 252 | buf[2] = (uint32_t)((adapter->cur_target_time >> 32) & |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 253 | 0xffffffff); |
| 254 | |
Jeff Johnson | a5fb218 | 2017-10-06 20:27:38 -0700 | [diff] [blame] | 255 | if (!qdf_atomic_read(&hddctx->cap_tsf_flag)) { |
| 256 | hdd_info("old: status=%u, tsf_low=%u, tsf_high=%u", |
| 257 | buf[0], buf[1], buf[2]); |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 258 | return HDD_TSF_OP_SUCC; |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 259 | } |
Jeff Johnson | a5fb218 | 2017-10-06 20:27:38 -0700 | [diff] [blame] | 260 | |
| 261 | ret = hdd_tsf_reset_gpio(adapter); |
| 262 | if (0 != ret) { |
| 263 | hdd_err("reset tsf gpio fail"); |
| 264 | buf[0] = TSF_RESET_GPIO_FAIL; |
| 265 | return HDD_TSF_OP_SUCC; |
| 266 | } |
| 267 | hddctx->cap_tsf_context = NULL; |
| 268 | qdf_atomic_set(&hddctx->cap_tsf_flag, 0); |
| 269 | hdd_info("get tsf cmd,status=%u, tsf_low=%u, tsf_high=%u", |
| 270 | buf[0], buf[1], buf[2]); |
| 271 | |
| 272 | return HDD_TSF_OP_SUCC; |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 273 | } |
| 274 | |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 275 | #ifdef WLAN_FEATURE_TSF_PLUS |
| 276 | /* unit for target time: us; host time: ns */ |
| 277 | #define HOST_TO_TARGET_TIME_RATIO NSEC_PER_USEC |
| 278 | #define MAX_ALLOWED_DEVIATION_NS (20 * NSEC_PER_MSEC) |
| 279 | #define MAX_CONTINUOUS_ERROR_CNT 3 |
Yu Wang | 04ccd76 | 2017-05-31 19:29:43 +0800 | [diff] [blame] | 280 | |
| 281 | /* to distinguish 32-bit overflow case, this inverval should: |
| 282 | * equal or less than (1/2 * OVERFLOW_INDICATOR32 us) |
| 283 | */ |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 284 | #define WLAN_HDD_CAPTURE_TSF_INTERVAL_SEC 500 |
| 285 | #define WLAN_HDD_CAPTURE_TSF_INIT_INTERVAL_MS 100 |
Yu Wang | 04ccd76 | 2017-05-31 19:29:43 +0800 | [diff] [blame] | 286 | #define NORMAL_INTERVAL_TARGET \ |
| 287 | ((int64_t)((int64_t)WLAN_HDD_CAPTURE_TSF_INTERVAL_SEC * \ |
| 288 | NSEC_PER_SEC / HOST_TO_TARGET_TIME_RATIO)) |
| 289 | #define OVERFLOW_INDICATOR32 (((int64_t)0x1) << 32) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 290 | |
| 291 | /** |
| 292 | * TS_STATUS - timestamp status |
| 293 | * |
| 294 | * HDD_TS_STATUS_WAITING: one of the stamp-pair |
| 295 | * is not updated |
| 296 | * HDD_TS_STATUS_READY: valid tstamp-pair |
| 297 | * HDD_TS_STATUS_INVALID: invalid tstamp-pair |
| 298 | */ |
| 299 | enum hdd_ts_status { |
| 300 | HDD_TS_STATUS_WAITING, |
| 301 | HDD_TS_STATUS_READY, |
| 302 | HDD_TS_STATUS_INVALID |
| 303 | }; |
| 304 | |
| 305 | static |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 306 | enum hdd_tsf_op_result __hdd_start_tsf_sync(struct hdd_adapter *adapter) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 307 | { |
| 308 | QDF_STATUS ret; |
| 309 | |
| 310 | if (!hdd_get_th_sync_status(adapter)) { |
| 311 | hdd_err("Host Target sync has not initialized"); |
| 312 | return HDD_TSF_OP_FAIL; |
| 313 | } |
| 314 | |
| 315 | ret = qdf_mc_timer_start(&adapter->host_target_sync_timer, |
| 316 | WLAN_HDD_CAPTURE_TSF_INIT_INTERVAL_MS); |
| 317 | if (ret != QDF_STATUS_SUCCESS && ret != QDF_STATUS_E_ALREADY) { |
| 318 | hdd_err("Failed to start timer, ret: %d", ret); |
| 319 | return HDD_TSF_OP_FAIL; |
| 320 | } |
| 321 | return HDD_TSF_OP_SUCC; |
| 322 | } |
| 323 | |
| 324 | static |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 325 | enum hdd_tsf_op_result __hdd_stop_tsf_sync(struct hdd_adapter *adapter) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 326 | { |
| 327 | QDF_STATUS ret; |
| 328 | |
| 329 | if (!hdd_get_th_sync_status(adapter)) { |
| 330 | hdd_err("Host Target sync has not initialized"); |
| 331 | return HDD_TSF_OP_SUCC; |
| 332 | } |
| 333 | |
| 334 | ret = qdf_mc_timer_stop(&adapter->host_target_sync_timer); |
| 335 | if (ret != QDF_STATUS_SUCCESS) { |
| 336 | hdd_err("Failed to stop timer, ret: %d", ret); |
| 337 | return HDD_TSF_OP_FAIL; |
| 338 | } |
| 339 | return HDD_TSF_OP_SUCC; |
| 340 | } |
| 341 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 342 | static inline void hdd_reset_timestamps(struct hdd_adapter *adapter) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 343 | { |
| 344 | qdf_spin_lock_bh(&adapter->host_target_sync_lock); |
| 345 | adapter->cur_host_time = 0; |
| 346 | adapter->cur_target_time = 0; |
| 347 | adapter->last_host_time = 0; |
| 348 | adapter->last_target_time = 0; |
| 349 | qdf_spin_unlock_bh(&adapter->host_target_sync_lock); |
| 350 | } |
| 351 | |
| 352 | /** |
| 353 | * hdd_check_timestamp_status() - return the tstamp status |
| 354 | * |
| 355 | * @last_target_time: the last saved target time |
| 356 | * @last_host_time: the last saved host time |
| 357 | * @cur_target_time : new target time |
| 358 | * @cur_host_time : new host time |
| 359 | * |
| 360 | * This function check the new timstamp-pair(cur_host_time/cur_target_time) |
| 361 | * |
| 362 | * Return: |
| 363 | * HDD_TS_STATUS_WAITING: cur_host_time or cur_host_time is 0 |
| 364 | * HDD_TS_STATUS_READY: cur_target_time/cur_host_time is a valid pair, |
| 365 | * and can be saved |
| 366 | * HDD_TS_STATUS_INVALID: cur_target_time/cur_host_time is a invalid pair, |
| 367 | * should be discard |
| 368 | */ |
| 369 | static |
| 370 | enum hdd_ts_status hdd_check_timestamp_status( |
| 371 | uint64_t last_target_time, |
| 372 | uint64_t last_host_time, |
| 373 | uint64_t cur_target_time, |
| 374 | uint64_t cur_host_time) |
| 375 | { |
| 376 | uint64_t delta_ns, delta_target_time, delta_host_time; |
| 377 | |
| 378 | /* one or more are not updated, need to wait */ |
| 379 | if (cur_target_time == 0 || cur_host_time == 0) |
| 380 | return HDD_TS_STATUS_WAITING; |
| 381 | |
| 382 | /* init value, it's the first time to update the pair */ |
| 383 | if (last_target_time == 0 && last_host_time == 0) |
| 384 | return HDD_TS_STATUS_READY; |
| 385 | |
| 386 | /* the new values should be greater than the saved values */ |
| 387 | if ((cur_target_time <= last_target_time) || |
| 388 | (cur_host_time <= last_host_time)) { |
| 389 | hdd_err("Invalid timestamps!last_target_time: %llu;" |
| 390 | "last_host_time: %llu; cur_target_time: %llu;" |
| 391 | "cur_host_time: %llu", |
| 392 | last_target_time, last_host_time, |
| 393 | cur_target_time, cur_host_time); |
| 394 | return HDD_TS_STATUS_INVALID; |
| 395 | } |
| 396 | |
| 397 | delta_target_time = (cur_target_time - last_target_time) * |
| 398 | HOST_TO_TARGET_TIME_RATIO; |
| 399 | delta_host_time = cur_host_time - last_host_time; |
| 400 | |
| 401 | /* |
| 402 | * DO NOT use abs64() , a big uint64 value might be turned to |
| 403 | * a small int64 value |
| 404 | */ |
| 405 | delta_ns = ((delta_target_time > delta_host_time) ? |
| 406 | (delta_target_time - delta_host_time) : |
| 407 | (delta_host_time - delta_target_time)); |
| 408 | |
| 409 | /* the deviation should be smaller than a threshold */ |
| 410 | if (delta_ns > MAX_ALLOWED_DEVIATION_NS) { |
| 411 | hdd_info("Invalid timestamps - delta: %llu ns", delta_ns); |
| 412 | return HDD_TS_STATUS_INVALID; |
| 413 | } |
| 414 | return HDD_TS_STATUS_READY; |
| 415 | } |
| 416 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 417 | static void hdd_update_timestamp(struct hdd_adapter *adapter, |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 418 | uint64_t target_time, uint64_t host_time) |
| 419 | { |
| 420 | int interval = 0; |
| 421 | enum hdd_ts_status sync_status; |
| 422 | |
| 423 | if (!adapter) |
| 424 | return; |
| 425 | |
Yu Wang | 70757d5 | 2017-06-08 12:15:42 +0800 | [diff] [blame] | 426 | /* host time is updated in IRQ context, it's always before target time, |
| 427 | * and so no need to try update last_host_time at present; |
| 428 | * since the interval of capturing TSF |
| 429 | * (WLAN_HDD_CAPTURE_TSF_INTERVAL_SEC) is long enough, host and target |
| 430 | * time are updated in pairs, and one by one, we can return here to |
| 431 | * avoid requiring spin lock, and to speed up the IRQ processing. |
| 432 | */ |
| 433 | if (host_time > 0) { |
| 434 | adapter->cur_host_time = host_time; |
| 435 | return; |
| 436 | } |
| 437 | |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 438 | qdf_spin_lock_bh(&adapter->host_target_sync_lock); |
| 439 | if (target_time > 0) |
| 440 | adapter->cur_target_time = target_time; |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 441 | |
| 442 | sync_status = hdd_check_timestamp_status(adapter->last_target_time, |
| 443 | adapter->last_host_time, |
| 444 | adapter->cur_target_time, |
| 445 | adapter->cur_host_time); |
| 446 | switch (sync_status) { |
| 447 | case HDD_TS_STATUS_INVALID: |
| 448 | if (++adapter->continuous_error_count < |
| 449 | MAX_CONTINUOUS_ERROR_CNT) { |
| 450 | interval = |
| 451 | WLAN_HDD_CAPTURE_TSF_INIT_INTERVAL_MS; |
| 452 | adapter->cur_target_time = 0; |
| 453 | adapter->cur_host_time = 0; |
| 454 | break; |
| 455 | } |
| 456 | hdd_info("Reach the max continuous error count"); |
| 457 | /* |
| 458 | * fall through: |
| 459 | * If reach MAX_CONTINUOUS_ERROR_CNT, treat it as a |
| 460 | * valid pair |
| 461 | */ |
| 462 | case HDD_TS_STATUS_READY: |
| 463 | adapter->last_target_time = adapter->cur_target_time; |
| 464 | adapter->last_host_time = adapter->cur_host_time; |
| 465 | adapter->cur_target_time = 0; |
| 466 | adapter->cur_host_time = 0; |
| 467 | hdd_info("ts-pair updated: target: %llu; host: %llu", |
| 468 | adapter->last_target_time, |
| 469 | adapter->last_host_time); |
| 470 | interval = WLAN_HDD_CAPTURE_TSF_INTERVAL_SEC * |
| 471 | MSEC_PER_SEC; |
| 472 | adapter->continuous_error_count = 0; |
| 473 | break; |
| 474 | case HDD_TS_STATUS_WAITING: |
| 475 | interval = 0; |
| 476 | break; |
| 477 | } |
| 478 | qdf_spin_unlock_bh(&adapter->host_target_sync_lock); |
| 479 | |
| 480 | if (interval > 0) |
| 481 | qdf_mc_timer_start(&adapter->host_target_sync_timer, interval); |
| 482 | } |
| 483 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 484 | static inline bool hdd_tsf_is_in_cap(struct hdd_adapter *adapter) |
Yu Wang | 04ccd76 | 2017-05-31 19:29:43 +0800 | [diff] [blame] | 485 | { |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 486 | struct hdd_context *hddctx; |
Yu Wang | 04ccd76 | 2017-05-31 19:29:43 +0800 | [diff] [blame] | 487 | |
| 488 | hddctx = WLAN_HDD_GET_CTX(adapter); |
| 489 | if (!hddctx) |
| 490 | return false; |
| 491 | |
| 492 | return qdf_atomic_read(&hddctx->cap_tsf_flag) > 0; |
| 493 | } |
| 494 | |
| 495 | /* define 64bit plus/minus to deal with overflow */ |
| 496 | static inline int hdd_64bit_plus(uint64_t x, int64_t y, uint64_t *ret) |
| 497 | { |
| 498 | if ((y < 0 && (-y) > x) || |
| 499 | (y > 0 && (y > U64_MAX - x))) { |
| 500 | *ret = 0; |
| 501 | return -EINVAL; |
| 502 | } |
| 503 | |
| 504 | *ret = x + y; |
| 505 | return 0; |
| 506 | } |
| 507 | |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 508 | static inline int hdd_uint64_plus(uint64_t x, uint64_t y, uint64_t *ret) |
| 509 | { |
| 510 | if (!ret) |
| 511 | return -EINVAL; |
| 512 | |
| 513 | if (x > (U64_MAX - y)) { |
| 514 | *ret = 0; |
| 515 | return -EINVAL; |
| 516 | } |
| 517 | |
| 518 | *ret = x + y; |
| 519 | return 0; |
| 520 | } |
| 521 | |
| 522 | static inline int hdd_uint64_minus(uint64_t x, uint64_t y, uint64_t *ret) |
| 523 | { |
| 524 | if (!ret) |
| 525 | return -EINVAL; |
| 526 | |
| 527 | if (x < y) { |
| 528 | *ret = 0; |
| 529 | return -EINVAL; |
| 530 | } |
| 531 | |
| 532 | *ret = x - y; |
| 533 | return 0; |
| 534 | } |
| 535 | |
Yu Wang | 04ccd76 | 2017-05-31 19:29:43 +0800 | [diff] [blame] | 536 | static inline int32_t hdd_get_hosttime_from_targettime( |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 537 | struct hdd_adapter *adapter, uint64_t target_time, |
Yu Wang | 04ccd76 | 2017-05-31 19:29:43 +0800 | [diff] [blame] | 538 | uint64_t *host_time) |
| 539 | { |
| 540 | int32_t ret = -EINVAL; |
| 541 | int64_t delta32_target; |
| 542 | bool in_cap_state; |
| 543 | |
| 544 | in_cap_state = hdd_tsf_is_in_cap(adapter); |
| 545 | |
| 546 | /* |
| 547 | * To avoid check the lock when it's not capturing tsf |
| 548 | * (the tstamp-pair won't be changed) |
| 549 | */ |
| 550 | if (in_cap_state) |
| 551 | qdf_spin_lock_bh(&adapter->host_target_sync_lock); |
| 552 | |
| 553 | /* at present, target_time is only 32bit in fact */ |
| 554 | delta32_target = (int64_t)((target_time & U32_MAX) - |
| 555 | (adapter->last_target_time & U32_MAX)); |
| 556 | |
| 557 | if (delta32_target < |
| 558 | (NORMAL_INTERVAL_TARGET - OVERFLOW_INDICATOR32)) |
| 559 | delta32_target += OVERFLOW_INDICATOR32; |
| 560 | else if (delta32_target > |
| 561 | (OVERFLOW_INDICATOR32 - NORMAL_INTERVAL_TARGET)) |
| 562 | delta32_target -= OVERFLOW_INDICATOR32; |
| 563 | |
| 564 | ret = hdd_64bit_plus(adapter->last_host_time, |
| 565 | HOST_TO_TARGET_TIME_RATIO * delta32_target, |
| 566 | host_time); |
| 567 | |
| 568 | if (in_cap_state) |
| 569 | qdf_spin_unlock_bh(&adapter->host_target_sync_lock); |
| 570 | |
| 571 | return ret; |
| 572 | } |
| 573 | |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 574 | static inline int32_t hdd_get_targettime_from_hosttime( |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 575 | struct hdd_adapter *adapter, uint64_t host_time, |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 576 | uint64_t *target_time) |
| 577 | { |
| 578 | int32_t ret = -EINVAL; |
| 579 | bool in_cap_state; |
| 580 | |
| 581 | if (!adapter || host_time == 0) |
| 582 | return ret; |
| 583 | |
| 584 | in_cap_state = hdd_tsf_is_in_cap(adapter); |
| 585 | if (in_cap_state) |
| 586 | qdf_spin_lock_bh(&adapter->host_target_sync_lock); |
| 587 | |
| 588 | if (host_time < adapter->last_host_time) |
| 589 | ret = hdd_uint64_minus(adapter->last_target_time, |
Yu Wang | c9ef24f | 2017-09-15 18:37:07 +0800 | [diff] [blame] | 590 | qdf_do_div(adapter->last_host_time - |
| 591 | host_time, |
| 592 | HOST_TO_TARGET_TIME_RATIO), |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 593 | target_time); |
| 594 | else |
| 595 | ret = hdd_uint64_plus(adapter->last_target_time, |
Yu Wang | c9ef24f | 2017-09-15 18:37:07 +0800 | [diff] [blame] | 596 | qdf_do_div(host_time - |
| 597 | adapter->last_host_time, |
| 598 | HOST_TO_TARGET_TIME_RATIO), |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 599 | target_time); |
| 600 | |
| 601 | if (in_cap_state) |
| 602 | qdf_spin_unlock_bh(&adapter->host_target_sync_lock); |
| 603 | |
| 604 | return ret; |
| 605 | } |
| 606 | |
Yu Wang | 66a250b | 2017-07-19 11:46:40 +0800 | [diff] [blame] | 607 | static inline |
| 608 | uint64_t hdd_get_monotonic_host_time(struct hdd_context *hdd_ctx) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 609 | { |
Yu Wang | 66a250b | 2017-07-19 11:46:40 +0800 | [diff] [blame] | 610 | return HDD_TSF_IS_RAW_SET(hdd_ctx) ? |
| 611 | ktime_get_ns() : ktime_get_real_ns(); |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 612 | } |
| 613 | |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 614 | static ssize_t __hdd_wlan_tsf_show(struct device *dev, |
| 615 | struct device_attribute *attr, char *buf) |
| 616 | { |
Jeff Johnson | 40dae4e | 2017-08-29 14:00:25 -0700 | [diff] [blame] | 617 | struct hdd_station_ctx *hdd_sta_ctx; |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 618 | struct hdd_adapter *adapter; |
Yu Wang | 66a250b | 2017-07-19 11:46:40 +0800 | [diff] [blame] | 619 | struct hdd_context *hdd_ctx; |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 620 | ssize_t size; |
| 621 | uint64_t host_time, target_time; |
| 622 | |
| 623 | struct net_device *net_dev = container_of(dev, struct net_device, dev); |
| 624 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 625 | adapter = (struct hdd_adapter *)(netdev_priv(net_dev)); |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 626 | if (adapter->magic != WLAN_HDD_ADAPTER_MAGIC) |
| 627 | return scnprintf(buf, PAGE_SIZE, "Invalid device\n"); |
| 628 | |
| 629 | if (!hdd_get_th_sync_status(adapter)) |
| 630 | return scnprintf(buf, PAGE_SIZE, |
| 631 | "TSF sync is not initialized\n"); |
| 632 | |
| 633 | hdd_sta_ctx = WLAN_HDD_GET_STATION_CTX_PTR(adapter); |
| 634 | if (eConnectionState_Associated != hdd_sta_ctx->conn_info.connState) |
| 635 | return scnprintf(buf, PAGE_SIZE, "NOT connected\n"); |
| 636 | |
Yu Wang | 66a250b | 2017-07-19 11:46:40 +0800 | [diff] [blame] | 637 | hdd_ctx = WLAN_HDD_GET_CTX(adapter); |
| 638 | if (!hdd_ctx) |
| 639 | return scnprintf(buf, PAGE_SIZE, "Invalid HDD context\n"); |
| 640 | |
| 641 | host_time = hdd_get_monotonic_host_time(hdd_ctx); |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 642 | if (hdd_get_targettime_from_hosttime(adapter, host_time, |
| 643 | &target_time)) |
| 644 | size = scnprintf(buf, PAGE_SIZE, "Invalid timestamp\n"); |
| 645 | else |
| 646 | size = scnprintf(buf, PAGE_SIZE, "%s%llu %llu %pM\n", |
| 647 | buf, target_time, host_time, |
| 648 | hdd_sta_ctx->conn_info.bssId.bytes); |
| 649 | return size; |
| 650 | } |
| 651 | |
| 652 | static ssize_t hdd_wlan_tsf_show(struct device *dev, |
| 653 | struct device_attribute *attr, char *buf) |
| 654 | { |
| 655 | ssize_t ret; |
| 656 | |
| 657 | cds_ssr_protect(__func__); |
| 658 | ret = __hdd_wlan_tsf_show(dev, attr, buf); |
| 659 | cds_ssr_unprotect(__func__); |
| 660 | |
| 661 | return ret; |
| 662 | } |
| 663 | |
| 664 | static DEVICE_ATTR(tsf, 0400, hdd_wlan_tsf_show, NULL); |
| 665 | |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 666 | static void hdd_capture_tsf_timer_expired_handler(void *arg) |
| 667 | { |
| 668 | uint32_t tsf_op_resp; |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 669 | struct hdd_adapter *adapter; |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 670 | |
| 671 | if (!arg) |
| 672 | return; |
| 673 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 674 | adapter = (struct hdd_adapter *)arg; |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 675 | hdd_capture_tsf_internal(adapter, &tsf_op_resp, 1); |
| 676 | } |
| 677 | |
| 678 | static irqreturn_t hdd_tsf_captured_irq_handler(int irq, void *arg) |
| 679 | { |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 680 | struct hdd_adapter *adapter; |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 681 | struct hdd_context *hdd_ctx; |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 682 | uint64_t host_time; |
| 683 | char *name = NULL; |
| 684 | |
| 685 | if (!arg) |
| 686 | return IRQ_NONE; |
| 687 | |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 688 | hdd_ctx = (struct hdd_context *)arg; |
Yu Wang | 66a250b | 2017-07-19 11:46:40 +0800 | [diff] [blame] | 689 | host_time = hdd_get_monotonic_host_time(hdd_ctx); |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 690 | |
| 691 | adapter = hdd_ctx->cap_tsf_context; |
| 692 | if (!adapter) |
| 693 | return IRQ_HANDLED; |
| 694 | |
| 695 | if (!hdd_tsf_is_initialized(adapter)) { |
| 696 | hdd_err("tsf is not init, ignore irq"); |
| 697 | return IRQ_HANDLED; |
| 698 | } |
| 699 | |
| 700 | hdd_update_timestamp(adapter, 0, host_time); |
| 701 | if (adapter->dev) |
| 702 | name = adapter->dev->name; |
| 703 | |
| 704 | hdd_info("irq: %d - iface: %s - host_time: %llu", |
| 705 | irq, (!name ? "none" : name), host_time); |
| 706 | |
| 707 | return IRQ_HANDLED; |
| 708 | } |
| 709 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 710 | static enum hdd_tsf_op_result hdd_tsf_sync_init(struct hdd_adapter *adapter) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 711 | { |
| 712 | QDF_STATUS ret; |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 713 | struct hdd_context *hddctx; |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 714 | struct net_device *net_dev; |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 715 | |
| 716 | if (!adapter) |
| 717 | return HDD_TSF_OP_FAIL; |
| 718 | |
| 719 | hddctx = WLAN_HDD_GET_CTX(adapter); |
| 720 | if (!hddctx) { |
| 721 | hdd_err("invalid hdd context"); |
| 722 | return HDD_TSF_OP_FAIL; |
| 723 | } |
| 724 | |
| 725 | if (!qdf_atomic_read(&hddctx->tsf_ready_flag)) { |
| 726 | hdd_err("TSF feature has NOT been initialized"); |
| 727 | return HDD_TSF_OP_FAIL; |
| 728 | } |
| 729 | |
| 730 | if (hdd_get_th_sync_status(adapter)) { |
| 731 | hdd_err("Host Target sync has been initialized!!"); |
| 732 | return HDD_TSF_OP_SUCC; |
| 733 | } |
| 734 | |
| 735 | qdf_spinlock_create(&adapter->host_target_sync_lock); |
| 736 | |
| 737 | hdd_reset_timestamps(adapter); |
| 738 | |
| 739 | ret = qdf_mc_timer_init(&adapter->host_target_sync_timer, |
| 740 | QDF_TIMER_TYPE_SW, |
| 741 | hdd_capture_tsf_timer_expired_handler, |
| 742 | (void *)adapter); |
| 743 | if (ret != QDF_STATUS_SUCCESS) { |
| 744 | hdd_err("Failed to init timer, ret: %d", ret); |
| 745 | goto fail; |
| 746 | } |
| 747 | |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 748 | net_dev = adapter->dev; |
Yu Wang | 66a250b | 2017-07-19 11:46:40 +0800 | [diff] [blame] | 749 | if (net_dev && HDD_TSF_IS_DBG_FS_SET(hddctx)) |
| 750 | device_create_file(&net_dev->dev, &dev_attr_tsf); |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 751 | hdd_set_th_sync_status(adapter, true); |
| 752 | |
| 753 | return HDD_TSF_OP_SUCC; |
| 754 | fail: |
| 755 | hdd_set_th_sync_status(adapter, false); |
| 756 | return HDD_TSF_OP_FAIL; |
| 757 | } |
| 758 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 759 | static enum hdd_tsf_op_result hdd_tsf_sync_deinit(struct hdd_adapter *adapter) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 760 | { |
| 761 | QDF_STATUS ret; |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 762 | struct hdd_context *hddctx; |
Yu Wang | 0ea1017 | 2017-06-02 13:40:52 +0800 | [diff] [blame] | 763 | struct net_device *net_dev; |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 764 | |
| 765 | if (!adapter) |
| 766 | return HDD_TSF_OP_FAIL; |
| 767 | |
| 768 | if (!hdd_get_th_sync_status(adapter)) { |
| 769 | hdd_err("Host Target sync has not been initialized!!"); |
| 770 | return HDD_TSF_OP_SUCC; |
| 771 | } |
| 772 | |
| 773 | hdd_set_th_sync_status(adapter, false); |
| 774 | |
| 775 | ret = qdf_mc_timer_destroy(&adapter->host_target_sync_timer); |
| 776 | if (ret != QDF_STATUS_SUCCESS) |
| 777 | hdd_err("Failed to destroy timer, ret: %d", ret); |
| 778 | |
| 779 | hddctx = WLAN_HDD_GET_CTX(adapter); |
| 780 | |
| 781 | /* reset the cap_tsf flag and gpio if needed */ |
| 782 | if (hddctx && qdf_atomic_read(&hddctx->cap_tsf_flag) && |
| 783 | hddctx->cap_tsf_context == adapter) { |
| 784 | int reset_ret = hdd_tsf_reset_gpio(adapter); |
| 785 | |
| 786 | if (reset_ret) |
| 787 | hdd_err("Failed to reset tsf gpio, ret:%d", |
| 788 | reset_ret); |
| 789 | hddctx->cap_tsf_context = NULL; |
| 790 | qdf_atomic_set(&hddctx->cap_tsf_flag, 0); |
| 791 | } |
| 792 | |
| 793 | hdd_reset_timestamps(adapter); |
Yu Wang | 66a250b | 2017-07-19 11:46:40 +0800 | [diff] [blame] | 794 | |
| 795 | net_dev = adapter->dev; |
| 796 | if (net_dev && HDD_TSF_IS_DBG_FS_SET(hddctx)) { |
| 797 | struct device *dev = &net_dev->dev; |
| 798 | |
| 799 | device_remove_file(dev, &dev_attr_tsf); |
| 800 | } |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 801 | return HDD_TSF_OP_SUCC; |
| 802 | } |
| 803 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 804 | static inline void hdd_update_tsf(struct hdd_adapter *adapter, uint64_t tsf) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 805 | { |
| 806 | uint32_t tsf_op_resp[3]; |
| 807 | |
| 808 | hdd_indicate_tsf_internal(adapter, tsf_op_resp, 3); |
| 809 | hdd_update_timestamp(adapter, tsf, 0); |
| 810 | } |
| 811 | |
Yu Wang | 04ccd76 | 2017-05-31 19:29:43 +0800 | [diff] [blame] | 812 | static inline |
| 813 | enum hdd_tsf_op_result hdd_netbuf_timestamp(qdf_nbuf_t netbuf, |
| 814 | uint64_t target_time) |
| 815 | { |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 816 | struct hdd_adapter *adapter; |
Yu Wang | 04ccd76 | 2017-05-31 19:29:43 +0800 | [diff] [blame] | 817 | struct net_device *net_dev = netbuf->dev; |
| 818 | |
| 819 | if (!net_dev) |
| 820 | return HDD_TSF_OP_FAIL; |
| 821 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 822 | adapter = (struct hdd_adapter *)(netdev_priv(net_dev)); |
Yu Wang | 04ccd76 | 2017-05-31 19:29:43 +0800 | [diff] [blame] | 823 | if (adapter && adapter->magic == WLAN_HDD_ADAPTER_MAGIC && |
| 824 | hdd_get_th_sync_status(adapter)) { |
| 825 | uint64_t host_time; |
| 826 | int32_t ret = hdd_get_hosttime_from_targettime(adapter, |
| 827 | target_time, &host_time); |
| 828 | if (!ret) { |
| 829 | netbuf->tstamp = ns_to_ktime(host_time); |
| 830 | return HDD_TSF_OP_SUCC; |
| 831 | } |
| 832 | } |
| 833 | |
| 834 | return HDD_TSF_OP_FAIL; |
| 835 | } |
| 836 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 837 | int hdd_start_tsf_sync(struct hdd_adapter *adapter) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 838 | { |
| 839 | enum hdd_tsf_op_result ret; |
| 840 | |
| 841 | if (!adapter) |
| 842 | return -EINVAL; |
| 843 | |
| 844 | ret = hdd_tsf_sync_init(adapter); |
| 845 | if (ret != HDD_TSF_OP_SUCC) { |
| 846 | hdd_err("Failed to init tsf sync, ret: %d", ret); |
| 847 | return -EINVAL; |
| 848 | } |
| 849 | |
| 850 | return (__hdd_start_tsf_sync(adapter) == |
| 851 | HDD_TSF_OP_SUCC) ? 0 : -EINVAL; |
| 852 | } |
| 853 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 854 | int hdd_stop_tsf_sync(struct hdd_adapter *adapter) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 855 | { |
| 856 | enum hdd_tsf_op_result ret; |
| 857 | |
| 858 | if (!adapter) |
| 859 | return -EINVAL; |
| 860 | |
| 861 | ret = __hdd_stop_tsf_sync(adapter); |
| 862 | if (ret != HDD_TSF_OP_SUCC) |
| 863 | return -EINVAL; |
| 864 | |
| 865 | ret = hdd_tsf_sync_deinit(adapter); |
| 866 | if (ret != HDD_TSF_OP_SUCC) { |
| 867 | hdd_err("Failed to deinit tsf sync, ret: %d", ret); |
| 868 | return -EINVAL; |
| 869 | } |
| 870 | return 0; |
| 871 | } |
| 872 | |
Yu Wang | 04ccd76 | 2017-05-31 19:29:43 +0800 | [diff] [blame] | 873 | int hdd_tx_timestamp(qdf_nbuf_t netbuf, uint64_t target_time) |
| 874 | { |
| 875 | struct sock *sk = netbuf->sk; |
| 876 | |
| 877 | if (!sk) |
| 878 | return -EINVAL; |
| 879 | |
| 880 | if ((skb_shinfo(netbuf)->tx_flags & SKBTX_SW_TSTAMP) && |
| 881 | !(skb_shinfo(netbuf)->tx_flags & SKBTX_IN_PROGRESS)) { |
| 882 | struct sock_exterr_skb *serr; |
| 883 | qdf_nbuf_t new_netbuf; |
| 884 | int err; |
| 885 | |
| 886 | if (hdd_netbuf_timestamp(netbuf, target_time) != |
| 887 | HDD_TSF_OP_SUCC) |
| 888 | return -EINVAL; |
| 889 | |
| 890 | new_netbuf = qdf_nbuf_clone(netbuf); |
| 891 | if (!new_netbuf) |
| 892 | return -ENOMEM; |
| 893 | |
| 894 | serr = SKB_EXT_ERR(new_netbuf); |
| 895 | memset(serr, 0, sizeof(*serr)); |
| 896 | serr->ee.ee_errno = ENOMSG; |
| 897 | serr->ee.ee_origin = SO_EE_ORIGIN_TIMESTAMPING; |
| 898 | |
| 899 | err = sock_queue_err_skb(sk, new_netbuf); |
| 900 | if (err) { |
| 901 | qdf_nbuf_free(new_netbuf); |
| 902 | return err; |
| 903 | } |
| 904 | |
| 905 | return 0; |
| 906 | } |
| 907 | return -EINVAL; |
| 908 | } |
| 909 | |
| 910 | int hdd_rx_timestamp(qdf_nbuf_t netbuf, uint64_t target_time) |
| 911 | { |
| 912 | if (hdd_netbuf_timestamp(netbuf, target_time) == |
| 913 | HDD_TSF_OP_SUCC) |
| 914 | return 0; |
| 915 | |
| 916 | /* reset tstamp when failed */ |
| 917 | netbuf->tstamp = ns_to_ktime(0); |
| 918 | return -EINVAL; |
| 919 | } |
| 920 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 921 | static inline int __hdd_capture_tsf(struct hdd_adapter *adapter, |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 922 | uint32_t *buf, int len) |
| 923 | { |
| 924 | if (!adapter || !buf) { |
| 925 | hdd_err("invalid pointer"); |
| 926 | return -EINVAL; |
| 927 | } |
| 928 | |
| 929 | if (len != 1) |
| 930 | return -EINVAL; |
| 931 | |
| 932 | buf[0] = TSF_DISABLED_BY_TSFPLUS; |
| 933 | |
| 934 | return 0; |
| 935 | } |
| 936 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 937 | static inline int __hdd_indicate_tsf(struct hdd_adapter *adapter, |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 938 | uint32_t *buf, int len) |
| 939 | { |
| 940 | if (!adapter || !buf) { |
| 941 | hdd_err("invalid pointer"); |
| 942 | return -EINVAL; |
| 943 | } |
| 944 | |
| 945 | if (len != 3) |
| 946 | return -EINVAL; |
| 947 | |
| 948 | buf[0] = TSF_DISABLED_BY_TSFPLUS; |
| 949 | buf[1] = 0; |
| 950 | buf[2] = 0; |
| 951 | |
| 952 | return 0; |
| 953 | } |
| 954 | |
| 955 | static inline |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 956 | enum hdd_tsf_op_result wlan_hdd_tsf_plus_init(struct hdd_context *hdd_ctx) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 957 | { |
| 958 | int ret; |
| 959 | |
Yu Wang | 66a250b | 2017-07-19 11:46:40 +0800 | [diff] [blame] | 960 | if (!HDD_TSF_IS_PTP_ENABLED(hdd_ctx)) { |
| 961 | hdd_info("To enable TSF_PLUS, set gtsf_ptp_options in ini"); |
| 962 | return HDD_TSF_OP_FAIL; |
| 963 | } |
| 964 | |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 965 | ret = cnss_common_register_tsf_captured_handler( |
| 966 | hdd_ctx->parent_dev, |
| 967 | hdd_tsf_captured_irq_handler, |
| 968 | (void *)hdd_ctx); |
| 969 | if (ret != 0) { |
| 970 | hdd_err("Failed to register irq handler: %d", ret); |
| 971 | return HDD_TSF_OP_FAIL; |
| 972 | } |
Yu Wang | ceb357b | 2017-06-01 12:04:18 +0800 | [diff] [blame] | 973 | |
Yu Wang | 66a250b | 2017-07-19 11:46:40 +0800 | [diff] [blame] | 974 | if (HDD_TSF_IS_TX_SET(hdd_ctx)) |
| 975 | ol_register_timestamp_callback(hdd_tx_timestamp); |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 976 | return HDD_TSF_OP_SUCC; |
| 977 | } |
| 978 | |
| 979 | static inline |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 980 | enum hdd_tsf_op_result wlan_hdd_tsf_plus_deinit(struct hdd_context *hdd_ctx) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 981 | { |
| 982 | int ret; |
| 983 | |
Yu Wang | 66a250b | 2017-07-19 11:46:40 +0800 | [diff] [blame] | 984 | if (!HDD_TSF_IS_PTP_ENABLED(hdd_ctx)) |
| 985 | return HDD_TSF_OP_SUCC; |
| 986 | |
| 987 | if (HDD_TSF_IS_TX_SET(hdd_ctx)) |
| 988 | ol_deregister_timestamp_callback(); |
| 989 | |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 990 | ret = cnss_common_unregister_tsf_captured_handler( |
| 991 | hdd_ctx->parent_dev, |
| 992 | (void *)hdd_ctx); |
| 993 | if (ret != 0) { |
| 994 | hdd_err("Failed to unregister irq handler, ret:%d", |
| 995 | ret); |
| 996 | ret = HDD_TSF_OP_FAIL; |
| 997 | } |
| 998 | |
| 999 | return HDD_TSF_OP_SUCC; |
| 1000 | } |
| 1001 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 1002 | void hdd_tsf_notify_wlan_state_change(struct hdd_adapter *adapter, |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1003 | eConnectionState old_state, |
| 1004 | eConnectionState new_state) |
| 1005 | { |
| 1006 | if (!adapter) |
| 1007 | return; |
| 1008 | |
| 1009 | if (old_state != eConnectionState_Associated && |
| 1010 | new_state == eConnectionState_Associated) |
| 1011 | hdd_start_tsf_sync(adapter); |
| 1012 | else if (old_state == eConnectionState_Associated && |
| 1013 | new_state != eConnectionState_Associated) |
| 1014 | hdd_stop_tsf_sync(adapter); |
| 1015 | } |
| 1016 | #else |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 1017 | static inline void hdd_update_tsf(struct hdd_adapter *adapter, uint64_t tsf) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1018 | { |
| 1019 | } |
| 1020 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 1021 | static inline int __hdd_indicate_tsf(struct hdd_adapter *adapter, |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1022 | uint32_t *buf, int len) |
| 1023 | { |
| 1024 | return (hdd_indicate_tsf_internal(adapter, buf, len) == |
| 1025 | HDD_TSF_OP_SUCC) ? 0 : -EINVAL; |
| 1026 | } |
| 1027 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 1028 | static inline int __hdd_capture_tsf(struct hdd_adapter *adapter, |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1029 | uint32_t *buf, int len) |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 1030 | { |
| 1031 | return (hdd_capture_tsf_internal(adapter, buf, len) == |
| 1032 | HDD_TSF_OP_SUCC) ? 0 : -EINVAL; |
| 1033 | } |
| 1034 | |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1035 | static inline |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 1036 | enum hdd_tsf_op_result wlan_hdd_tsf_plus_init(struct hdd_context *hdd_ctx) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1037 | { |
| 1038 | return HDD_TSF_OP_SUCC; |
| 1039 | } |
| 1040 | |
| 1041 | static inline |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 1042 | enum hdd_tsf_op_result wlan_hdd_tsf_plus_deinit(struct hdd_context *hdd_ctx) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1043 | { |
| 1044 | return HDD_TSF_OP_SUCC; |
| 1045 | } |
| 1046 | #endif /* WLAN_FEATURE_TSF_PLUS */ |
| 1047 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 1048 | int hdd_capture_tsf(struct hdd_adapter *adapter, uint32_t *buf, int len) |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1049 | { |
| 1050 | return __hdd_capture_tsf(adapter, buf, len); |
| 1051 | } |
| 1052 | |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 1053 | int hdd_indicate_tsf(struct hdd_adapter *adapter, uint32_t *buf, int len) |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 1054 | { |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1055 | return __hdd_indicate_tsf(adapter, buf, len); |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1056 | } |
| 1057 | |
| 1058 | /** |
| 1059 | * hdd_get_tsf_cb() - handle tsf callback |
| 1060 | * @pcb_cxt: pointer to the hdd_contex |
| 1061 | * @ptsf: pointer to struct stsf |
| 1062 | * |
| 1063 | * This function handle the event that reported by firmware at first. |
| 1064 | * The event contains the vdev_id, current tsf value of this vdev, |
| 1065 | * tsf value is 64bits, discripted in two varaible tsf_low and tsf_high. |
| 1066 | * These two values each is uint32. |
| 1067 | * |
| 1068 | * Return: 0 for success or non-zero negative failure code |
| 1069 | */ |
Arun Khandavalli | 4b55da7 | 2016-07-19 19:55:01 +0530 | [diff] [blame] | 1070 | int hdd_get_tsf_cb(void *pcb_cxt, struct stsf *ptsf) |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1071 | { |
Jeff Johnson | 82797b6 | 2017-08-11 15:31:27 -0700 | [diff] [blame] | 1072 | struct hdd_context *hddctx; |
Jeff Johnson | 85b5c11 | 2017-08-11 15:15:23 -0700 | [diff] [blame] | 1073 | struct hdd_adapter *adapter; |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1074 | int status; |
| 1075 | |
| 1076 | if (pcb_cxt == NULL || ptsf == NULL) { |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1077 | hdd_err("HDD context is not valid"); |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1078 | return -EINVAL; |
| 1079 | } |
| 1080 | |
Jeff Johnson | 82797b6 | 2017-08-11 15:31:27 -0700 | [diff] [blame] | 1081 | hddctx = (struct hdd_context *)pcb_cxt; |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1082 | status = wlan_hdd_validate_context(hddctx); |
Srinivas Girigowda | 388dea8 | 2017-03-25 11:49:56 -0700 | [diff] [blame] | 1083 | if (0 != status) |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1084 | return -EINVAL; |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1085 | |
| 1086 | adapter = hdd_get_adapter_by_vdev(hddctx, ptsf->vdev_id); |
| 1087 | |
| 1088 | if (NULL == adapter) { |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1089 | hdd_err("failed to find adapter"); |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1090 | return -EINVAL; |
| 1091 | } |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 1092 | |
| 1093 | if (!hdd_tsf_is_initialized(adapter)) { |
| 1094 | hdd_err("tsf is not init, ignore tsf event"); |
| 1095 | return -EINVAL; |
| 1096 | } |
| 1097 | |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1098 | hdd_info("tsf cb handle event, device_mode is %d", |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1099 | adapter->device_mode); |
| 1100 | |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 1101 | adapter->cur_target_time = ((uint64_t)ptsf->tsf_high << 32 | |
| 1102 | ptsf->tsf_low); |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1103 | adapter->tsf_sync_soc_timer = ((uint64_t) ptsf->soc_timer_high << 32 | |
| 1104 | ptsf->soc_timer_low); |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1105 | |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1106 | complete(&tsf_sync_get_completion_evt); |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1107 | hdd_update_tsf(adapter, adapter->cur_target_time); |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1108 | hdd_info("Vdev=%u, tsf_low=%u, tsf_high=%u soc_timer=%llu", |
| 1109 | ptsf->vdev_id, ptsf->tsf_low, ptsf->tsf_high, |
| 1110 | adapter->tsf_sync_soc_timer); |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1111 | return 0; |
| 1112 | } |
| 1113 | |
Jeff Johnson | 363764f | 2017-06-02 13:43:36 -0700 | [diff] [blame] | 1114 | static const struct nla_policy tsf_policy[QCA_WLAN_VENDOR_ATTR_TSF_MAX + 1] = { |
| 1115 | [QCA_WLAN_VENDOR_ATTR_TSF_CMD] = {.type = NLA_U32}, |
| 1116 | }; |
| 1117 | |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1118 | /** |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1119 | * __wlan_hdd_cfg80211_handle_tsf_cmd(): Setup TSF operations |
| 1120 | * @wiphy: Pointer to wireless phy |
| 1121 | * @wdev: Pointer to wireless device |
| 1122 | * @data: Pointer to data |
| 1123 | * @data_len: Data length |
| 1124 | * |
| 1125 | * Handle TSF SET / GET operation from userspace |
| 1126 | * |
| 1127 | * Return: 0 on success, negative errno on failure |
| 1128 | */ |
| 1129 | static int __wlan_hdd_cfg80211_handle_tsf_cmd(struct wiphy *wiphy, |
| 1130 | struct wireless_dev *wdev, |
| 1131 | const void *data, |
| 1132 | int data_len) |
| 1133 | { |
| 1134 | struct net_device *dev = wdev->netdev; |
Jeff Johnson | 8f38986 | 2017-08-29 14:19:23 -0700 | [diff] [blame] | 1135 | struct hdd_adapter *adapter = WLAN_HDD_GET_PRIV_PTR(dev); |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 1136 | struct hdd_context *hdd_ctx = wiphy_priv(wiphy); |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1137 | struct nlattr *tb_vendor[QCA_WLAN_VENDOR_ATTR_TSF_MAX + 1]; |
| 1138 | int status, ret; |
| 1139 | struct sk_buff *reply_skb; |
| 1140 | uint32_t tsf_op_resp[3], tsf_cmd; |
| 1141 | |
| 1142 | ENTER_DEV(wdev->netdev); |
| 1143 | |
| 1144 | status = wlan_hdd_validate_context(hdd_ctx); |
| 1145 | if (0 != status) |
| 1146 | return -EINVAL; |
| 1147 | |
Dustin Brown | 4ea21db | 2018-01-05 14:13:17 -0800 | [diff] [blame] | 1148 | if (wlan_cfg80211_nla_parse(tb_vendor, QCA_WLAN_VENDOR_ATTR_TSF_MAX, |
| 1149 | data, data_len, tsf_policy)) { |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1150 | hdd_err("Invalid TSF cmd"); |
| 1151 | return -EINVAL; |
| 1152 | } |
| 1153 | |
| 1154 | if (!tb_vendor[QCA_WLAN_VENDOR_ATTR_TSF_CMD]) { |
| 1155 | hdd_err("Invalid TSF cmd"); |
| 1156 | return -EINVAL; |
| 1157 | } |
| 1158 | tsf_cmd = nla_get_u32(tb_vendor[QCA_WLAN_VENDOR_ATTR_TSF_CMD]); |
| 1159 | |
| 1160 | if (tsf_cmd == QCA_TSF_CAPTURE || tsf_cmd == QCA_TSF_SYNC_GET) { |
| 1161 | hdd_capture_tsf(adapter, tsf_op_resp, 1); |
| 1162 | switch (tsf_op_resp[0]) { |
| 1163 | case TSF_RETURN: |
| 1164 | status = 0; |
| 1165 | break; |
| 1166 | case TSF_CURRENT_IN_CAP_STATE: |
| 1167 | status = -EALREADY; |
| 1168 | break; |
| 1169 | case TSF_STA_NOT_CONNECTED_NO_TSF: |
| 1170 | case TSF_SAP_NOT_STARTED_NO_TSF: |
| 1171 | status = -EPERM; |
| 1172 | break; |
| 1173 | default: |
| 1174 | case TSF_CAPTURE_FAIL: |
| 1175 | status = -EINVAL; |
| 1176 | break; |
| 1177 | } |
| 1178 | } |
| 1179 | if (status < 0) |
| 1180 | goto end; |
| 1181 | |
| 1182 | if (tsf_cmd == QCA_TSF_SYNC_GET) { |
| 1183 | ret = wait_for_completion_timeout(&tsf_sync_get_completion_evt, |
| 1184 | msecs_to_jiffies(WLAN_TSF_SYNC_GET_TIMEOUT)); |
| 1185 | if (ret == 0) { |
| 1186 | status = -ETIMEDOUT; |
| 1187 | goto end; |
| 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | if (tsf_cmd == QCA_TSF_GET || tsf_cmd == QCA_TSF_SYNC_GET) { |
| 1192 | hdd_indicate_tsf(adapter, tsf_op_resp, 3); |
| 1193 | switch (tsf_op_resp[0]) { |
| 1194 | case TSF_RETURN: |
| 1195 | status = 0; |
| 1196 | break; |
| 1197 | case TSF_NOT_RETURNED_BY_FW: |
| 1198 | status = -EINPROGRESS; |
| 1199 | break; |
| 1200 | case TSF_STA_NOT_CONNECTED_NO_TSF: |
| 1201 | case TSF_SAP_NOT_STARTED_NO_TSF: |
| 1202 | status = -EPERM; |
| 1203 | break; |
| 1204 | default: |
| 1205 | status = -EINVAL; |
| 1206 | break; |
| 1207 | } |
| 1208 | if (status != 0) |
| 1209 | goto end; |
| 1210 | |
| 1211 | reply_skb = cfg80211_vendor_event_alloc(hdd_ctx->wiphy, NULL, |
| 1212 | sizeof(uint64_t) * 2 + NLMSG_HDRLEN, |
| 1213 | QCA_NL80211_VENDOR_SUBCMD_TSF_INDEX, |
| 1214 | GFP_KERNEL); |
| 1215 | if (!reply_skb) { |
| 1216 | hdd_err("cfg80211_vendor_cmd_alloc_reply_skb failed"); |
| 1217 | status = -ENOMEM; |
| 1218 | goto end; |
| 1219 | } |
Dustin Brown | bb7e2f5 | 2016-10-17 12:16:35 -0700 | [diff] [blame] | 1220 | if (hdd_wlan_nla_put_u64(reply_skb, |
| 1221 | QCA_WLAN_VENDOR_ATTR_TSF_TIMER_VALUE, |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 1222 | adapter->cur_target_time) || |
Dustin Brown | bb7e2f5 | 2016-10-17 12:16:35 -0700 | [diff] [blame] | 1223 | hdd_wlan_nla_put_u64(reply_skb, |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1224 | QCA_WLAN_VENDOR_ATTR_TSF_SOC_TIMER_VALUE, |
Dustin Brown | bb7e2f5 | 2016-10-17 12:16:35 -0700 | [diff] [blame] | 1225 | adapter->tsf_sync_soc_timer)) { |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1226 | hdd_err("nla put fail"); |
| 1227 | kfree_skb(reply_skb); |
| 1228 | status = -EINVAL; |
| 1229 | goto end; |
| 1230 | } |
| 1231 | status = cfg80211_vendor_cmd_reply(reply_skb); |
| 1232 | } |
| 1233 | |
| 1234 | end: |
| 1235 | hdd_info("TSF operation %d Status: %d", tsf_cmd, status); |
| 1236 | return status; |
| 1237 | } |
| 1238 | |
Manikandan Mohan | 5356c2b | 2016-04-03 15:51:35 -0700 | [diff] [blame] | 1239 | int wlan_hdd_cfg80211_handle_tsf_cmd(struct wiphy *wiphy, |
| 1240 | struct wireless_dev *wdev, |
| 1241 | const void *data, |
| 1242 | int data_len) |
| 1243 | { |
| 1244 | int ret; |
| 1245 | |
| 1246 | cds_ssr_protect(__func__); |
| 1247 | ret = __wlan_hdd_cfg80211_handle_tsf_cmd(wiphy, wdev, data, data_len); |
| 1248 | cds_ssr_unprotect(__func__); |
| 1249 | |
| 1250 | return ret; |
| 1251 | } |
| 1252 | |
| 1253 | /** |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1254 | * wlan_hdd_tsf_init() - set callback to handle tsf value. |
Jeff Johnson | 82797b6 | 2017-08-11 15:31:27 -0700 | [diff] [blame] | 1255 | * @hdd_ctx: pointer to the struct hdd_context |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1256 | * |
| 1257 | * This function set the callback to sme module, the callback will be |
| 1258 | * called when a tsf event is reported by firmware |
| 1259 | * |
| 1260 | * Return: none |
| 1261 | */ |
Jeff Johnson | 82797b6 | 2017-08-11 15:31:27 -0700 | [diff] [blame] | 1262 | void wlan_hdd_tsf_init(struct hdd_context *hdd_ctx) |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1263 | { |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 1264 | QDF_STATUS hal_status; |
| 1265 | |
| 1266 | if (!hdd_ctx) |
| 1267 | return; |
| 1268 | |
| 1269 | if (qdf_atomic_inc_return(&hdd_ctx->tsf_ready_flag) > 1) |
| 1270 | return; |
| 1271 | |
| 1272 | qdf_atomic_init(&hdd_ctx->cap_tsf_flag); |
| 1273 | |
| 1274 | if (hdd_ctx->config->tsf_gpio_pin == TSF_GPIO_PIN_INVALID) |
| 1275 | goto fail; |
| 1276 | |
| 1277 | hal_status = sme_set_tsf_gpio(hdd_ctx->hHal, |
| 1278 | hdd_ctx->config->tsf_gpio_pin); |
| 1279 | if (QDF_STATUS_SUCCESS != hal_status) { |
| 1280 | hdd_err("set tsf GPIO failed, status: %d", hal_status); |
| 1281 | goto fail; |
| 1282 | } |
| 1283 | |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1284 | if (wlan_hdd_tsf_plus_init(hdd_ctx) != HDD_TSF_OP_SUCC) |
| 1285 | goto fail; |
| 1286 | |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 1287 | return; |
| 1288 | |
| 1289 | fail: |
| 1290 | qdf_atomic_set(&hdd_ctx->tsf_ready_flag, 0); |
| 1291 | } |
| 1292 | |
Jeff Johnson | 854cccd | 2017-08-28 11:39:24 -0700 | [diff] [blame] | 1293 | void wlan_hdd_tsf_deinit(struct hdd_context *hdd_ctx) |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 1294 | { |
| 1295 | if (!hdd_ctx) |
| 1296 | return; |
| 1297 | |
| 1298 | if (!qdf_atomic_read(&hdd_ctx->tsf_ready_flag)) |
| 1299 | return; |
| 1300 | |
Yu Wang | 000dc2f | 2017-05-26 17:38:48 +0800 | [diff] [blame] | 1301 | wlan_hdd_tsf_plus_deinit(hdd_ctx); |
Yu Wang | f5d5b5f | 2017-05-25 22:38:32 +0800 | [diff] [blame] | 1302 | qdf_atomic_set(&hdd_ctx->tsf_ready_flag, 0); |
| 1303 | qdf_atomic_set(&hdd_ctx->cap_tsf_flag, 0); |
Manikandan Mohan | dcc21ba | 2016-03-15 14:31:56 -0700 | [diff] [blame] | 1304 | } |