1 /* 2 * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 20 #include "dp_internal.h" 21 #include "qdf_mem.h" /* qdf_mem_malloc,free */ 22 23 #ifdef WDI_EVENT_ENABLE 24 void *dp_get_pldev(struct cdp_pdev *txrx_pdev) 25 { 26 struct dp_pdev *pdev = (struct dp_pdev *)txrx_pdev; 27 return pdev->pl_dev; 28 } 29 /* 30 * dp_wdi_event_next_sub() - Return handle for Next WDI event 31 * @wdi_sub: WDI Event handle 32 * 33 * Return handle for next WDI event in list 34 * 35 * Return: Next WDI event to be subscribe 36 */ 37 static inline wdi_event_subscribe * 38 dp_wdi_event_next_sub(wdi_event_subscribe *wdi_sub) 39 { 40 if (!wdi_sub) { 41 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 42 "Invalid subscriber in %s", __func__); 43 return NULL; 44 } 45 return wdi_sub->priv.next; 46 } 47 48 49 /* 50 * dp_wdi_event_del_subs() -Delete Event subscription 51 * @wdi_sub: WDI Event handle 52 * @event_index: Event index from list 53 * 54 * This API will delete subscribed event from list 55 * Return: None 56 */ 57 static inline void 58 dp_wdi_event_del_subs(wdi_event_subscribe *wdi_sub, int event_index) 59 { 60 /* Subscribers should take care of deletion */ 61 } 62 63 64 /* 65 * dp_wdi_event_iter_sub() - Iterate through all WDI event in the list 66 * and pass WDI event to callback function 67 * @pdev: DP pdev handle 68 * @event_index: Event index in list 69 * @wdi_event: WDI event handle 70 * @data: pointer to data 71 * @peer_id: peer id number 72 * @status: HTT rx status 73 * 74 * 75 * Return: None 76 */ 77 static inline void 78 dp_wdi_event_iter_sub( 79 struct dp_pdev *pdev, 80 uint32_t event_index, 81 wdi_event_subscribe *wdi_sub, 82 void *data, 83 uint16_t peer_id, 84 int status) 85 { 86 enum WDI_EVENT event = event_index + WDI_EVENT_BASE; 87 88 if (wdi_sub) { 89 do { 90 wdi_sub->callback(wdi_sub->context, event, data, 91 peer_id, status); 92 } while ((wdi_sub = dp_wdi_event_next_sub(wdi_sub))); 93 } 94 } 95 96 97 /* 98 * dp_wdi_event_handler() - Event handler for WDI event 99 * @event: wdi event number 100 * @soc: soc handle 101 * @data: pointer to data 102 * @peer_id: peer id number 103 * @status: HTT rx status 104 * @pdev_id: id of pdev 105 * 106 * It will be called to register WDI event 107 * 108 * Return: None 109 */ 110 void 111 dp_wdi_event_handler( 112 enum WDI_EVENT event, 113 struct dp_soc *soc, 114 void *data, 115 uint16_t peer_id, 116 int status, uint8_t pdev_id) 117 { 118 uint32_t event_index; 119 wdi_event_subscribe *wdi_sub; 120 struct dp_pdev *txrx_pdev; 121 struct dp_soc *soc_t = (struct dp_soc *)soc; 122 txrx_pdev = dp_get_pdev_for_mac_id(soc_t, pdev_id); 123 124 if (!event) { 125 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 126 "Invalid WDI event in %s", __func__); 127 return; 128 } 129 if (!txrx_pdev || txrx_pdev->pdev_deinit) { 130 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 131 "Invalid pdev in WDI event handler"); 132 return; 133 } 134 135 /* 136 * There can be NULL data, so no validation for the data 137 * Subscribers must do the sanity based on the requirements 138 */ 139 event_index = event - WDI_EVENT_BASE; 140 141 DP_STATS_INC(txrx_pdev, wdi_event[event_index], 1); 142 wdi_sub = txrx_pdev->wdi_event_list[event_index]; 143 144 /* Find the subscriber */ 145 dp_wdi_event_iter_sub(txrx_pdev, event_index, wdi_sub, data, 146 peer_id, status); 147 } 148 149 150 /* 151 * dp_wdi_event_sub() - Subscribe WDI event 152 * @txrx_pdev_handle: cdp_pdev handle 153 * @event_cb_sub_handle: subcribe evnet handle 154 * @event: Event to be subscribe 155 * 156 * Return: 0 for success. nonzero for failure. 157 */ 158 int 159 dp_wdi_event_sub( 160 struct cdp_pdev *txrx_pdev_handle, 161 void *event_cb_sub_handle, 162 uint32_t event) 163 { 164 uint32_t event_index; 165 wdi_event_subscribe *wdi_sub; 166 struct dp_pdev *txrx_pdev = (struct dp_pdev *)txrx_pdev_handle; 167 wdi_event_subscribe *event_cb_sub = 168 (wdi_event_subscribe *) event_cb_sub_handle; 169 170 if (!txrx_pdev) { 171 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 172 "Invalid txrx_pdev in %s", __func__); 173 return -EINVAL; 174 } 175 if (!event_cb_sub) { 176 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 177 "Invalid callback in %s", __func__); 178 return -EINVAL; 179 } 180 if ((!event) || (event >= WDI_EVENT_LAST) || (event < WDI_EVENT_BASE)) { 181 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 182 "Invalid event in %s", __func__); 183 return -EINVAL; 184 } 185 dp_set_pktlog_wifi3(txrx_pdev, event, true); 186 event_index = event - WDI_EVENT_BASE; 187 wdi_sub = txrx_pdev->wdi_event_list[event_index]; 188 189 /* 190 * Check if it is the first subscriber of the event 191 */ 192 if (!wdi_sub) { 193 wdi_sub = event_cb_sub; 194 wdi_sub->priv.next = NULL; 195 wdi_sub->priv.prev = NULL; 196 txrx_pdev->wdi_event_list[event_index] = wdi_sub; 197 return 0; 198 } 199 event_cb_sub->priv.next = wdi_sub; 200 event_cb_sub->priv.prev = NULL; 201 wdi_sub->priv.prev = event_cb_sub; 202 txrx_pdev->wdi_event_list[event_index] = event_cb_sub; 203 return 0; 204 205 } 206 207 /* 208 * dp_wdi_event_unsub() - WDI event unsubscribe 209 * @txrx_pdev_handle: cdp_pdev handle 210 * @event_cb_sub_handle: subscribed event handle 211 * @event: Event to be unsubscribe 212 * 213 * 214 * Return: 0 for success. nonzero for failure. 215 */ 216 int 217 dp_wdi_event_unsub( 218 struct cdp_pdev *txrx_pdev_handle, 219 void *event_cb_sub_handle, 220 uint32_t event) 221 { 222 uint32_t event_index = event - WDI_EVENT_BASE; 223 struct dp_pdev *txrx_pdev = (struct dp_pdev *)txrx_pdev_handle; 224 wdi_event_subscribe *event_cb_sub = 225 (wdi_event_subscribe *) event_cb_sub_handle; 226 227 if (!event_cb_sub) { 228 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 229 "Invalid callback in %s", __func__); 230 return -EINVAL; 231 } 232 233 dp_set_pktlog_wifi3(txrx_pdev, event, false); 234 235 if (!event_cb_sub->priv.prev) { 236 txrx_pdev->wdi_event_list[event_index] = event_cb_sub->priv.next; 237 } else { 238 event_cb_sub->priv.prev->priv.next = event_cb_sub->priv.next; 239 } 240 if (event_cb_sub->priv.next) { 241 event_cb_sub->priv.next->priv.prev = event_cb_sub->priv.prev; 242 } 243 244 return 0; 245 } 246 247 248 /* 249 * dp_wdi_event_attach() - Attach wdi event 250 * @txrx_pdev: DP pdev handle 251 * 252 * Return: 0 for success. nonzero for failure. 253 */ 254 int 255 dp_wdi_event_attach(struct dp_pdev *txrx_pdev) 256 { 257 if (!txrx_pdev) { 258 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 259 "Invalid device in %s\nWDI event attach failed", 260 __func__); 261 return -EINVAL; 262 } 263 /* Separate subscriber list for each event */ 264 txrx_pdev->wdi_event_list = (wdi_event_subscribe **) 265 qdf_mem_malloc( 266 sizeof(wdi_event_subscribe *) * WDI_NUM_EVENTS); 267 if (!txrx_pdev->wdi_event_list) { 268 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 269 "Insufficient memory for the WDI event lists"); 270 return -EINVAL; 271 } 272 return 0; 273 } 274 275 276 /* 277 * dp_wdi_event_detach() - Detach WDI event 278 * @txrx_pdev: DP pdev handle 279 * 280 * Return: 0 for success. nonzero for failure. 281 */ 282 int 283 dp_wdi_event_detach(struct dp_pdev *txrx_pdev) 284 { 285 int i; 286 wdi_event_subscribe *wdi_sub; 287 if (!txrx_pdev) { 288 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 289 "Invalid device in %s\nWDI attach failed", __func__); 290 return -EINVAL; 291 } 292 if (!txrx_pdev->wdi_event_list) { 293 return -EINVAL; 294 } 295 for (i = 0; i < WDI_NUM_EVENTS; i++) { 296 wdi_sub = txrx_pdev->wdi_event_list[i]; 297 /* Delete all the subscribers */ 298 dp_wdi_event_del_subs(wdi_sub, i); 299 } 300 qdf_mem_free(txrx_pdev->wdi_event_list); 301 return 0; 302 } 303 #endif /* CONFIG_WIN */ 304