1 /* 2 * Copyright (c) 2017-2018 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\n", __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 void *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\n", __func__); 127 return; 128 } 129 if (!txrx_pdev) { 130 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 131 "Invalid pdev in WDI event handler\n"); 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 if (!(txrx_pdev->wdi_event_list[event_index]) && 141 (event == WDI_EVENT_RX_DESC)) { 142 /* WDI_EVEN_RX_DESC is indicated for RX_LITE also */ 143 event_index = WDI_EVENT_LITE_RX - WDI_EVENT_BASE; 144 } 145 wdi_sub = txrx_pdev->wdi_event_list[event_index]; 146 147 /* Find the subscriber */ 148 dp_wdi_event_iter_sub(txrx_pdev, event_index, wdi_sub, data, 149 peer_id, status); 150 } 151 152 153 /* 154 * dp_wdi_event_sub() - Subscribe WDI event 155 * @txrx_pdev_handle: cdp_pdev handle 156 * @event_cb_sub_handle: subcribe evnet handle 157 * @event: Event to be subscribe 158 * 159 * Return: 0 for success. nonzero for failure. 160 */ 161 int 162 dp_wdi_event_sub( 163 struct cdp_pdev *txrx_pdev_handle, 164 void *event_cb_sub_handle, 165 uint32_t event) 166 { 167 uint32_t event_index; 168 wdi_event_subscribe *wdi_sub; 169 struct dp_pdev *txrx_pdev = (struct dp_pdev *)txrx_pdev_handle; 170 wdi_event_subscribe *event_cb_sub = 171 (wdi_event_subscribe *) event_cb_sub_handle; 172 173 if (!txrx_pdev) { 174 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 175 "Invalid txrx_pdev in %s", __func__); 176 return -EINVAL; 177 } 178 if (!event_cb_sub) { 179 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 180 "Invalid callback in %s", __func__); 181 return -EINVAL; 182 } 183 if ((!event) || (event >= WDI_EVENT_LAST) || (event < WDI_EVENT_BASE)) { 184 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 185 "Invalid event in %s", __func__); 186 return -EINVAL; 187 } 188 dp_set_pktlog_wifi3(txrx_pdev, event, true); 189 event_index = event - WDI_EVENT_BASE; 190 wdi_sub = txrx_pdev->wdi_event_list[event_index]; 191 192 /* 193 * Check if it is the first subscriber of the event 194 */ 195 if (!wdi_sub) { 196 wdi_sub = event_cb_sub; 197 wdi_sub->priv.next = NULL; 198 wdi_sub->priv.prev = NULL; 199 txrx_pdev->wdi_event_list[event_index] = wdi_sub; 200 return 0; 201 } 202 event_cb_sub->priv.next = wdi_sub; 203 event_cb_sub->priv.prev = NULL; 204 wdi_sub->priv.prev = event_cb_sub; 205 txrx_pdev->wdi_event_list[event_index] = event_cb_sub; 206 return 0; 207 208 } 209 210 /* 211 * dp_wdi_event_unsub() - WDI event unsubscribe 212 * @txrx_pdev_handle: cdp_pdev handle 213 * @event_cb_sub_handle: subscribed event handle 214 * @event: Event to be unsubscribe 215 * 216 * 217 * Return: 0 for success. nonzero for failure. 218 */ 219 int 220 dp_wdi_event_unsub( 221 struct cdp_pdev *txrx_pdev_handle, 222 void *event_cb_sub_handle, 223 uint32_t event) 224 { 225 uint32_t event_index = event - WDI_EVENT_BASE; 226 struct dp_pdev *txrx_pdev = (struct dp_pdev *)txrx_pdev_handle; 227 wdi_event_subscribe *event_cb_sub = 228 (wdi_event_subscribe *) event_cb_sub_handle; 229 230 if (!event_cb_sub) { 231 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 232 "Invalid callback in %s", __func__); 233 return -EINVAL; 234 } 235 236 dp_set_pktlog_wifi3(txrx_pdev, event, false); 237 238 if (!event_cb_sub->priv.prev) { 239 txrx_pdev->wdi_event_list[event_index] = event_cb_sub->priv.next; 240 } else { 241 event_cb_sub->priv.prev->priv.next = event_cb_sub->priv.next; 242 } 243 if (event_cb_sub->priv.next) { 244 event_cb_sub->priv.next->priv.prev = event_cb_sub->priv.prev; 245 } 246 247 return 0; 248 } 249 250 251 /* 252 * dp_wdi_event_attach() - Attach wdi event 253 * @txrx_pdev: DP pdev handle 254 * 255 * Return: 0 for success. nonzero for failure. 256 */ 257 int 258 dp_wdi_event_attach(struct dp_pdev *txrx_pdev) 259 { 260 if (!txrx_pdev) { 261 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 262 "Invalid device in %s\nWDI event attach failed\n", 263 __func__); 264 return -EINVAL; 265 } 266 /* Separate subscriber list for each event */ 267 txrx_pdev->wdi_event_list = (wdi_event_subscribe **) 268 qdf_mem_malloc( 269 sizeof(wdi_event_subscribe *) * WDI_NUM_EVENTS); 270 if (!txrx_pdev->wdi_event_list) { 271 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 272 "Insufficient memory for the WDI event lists\n"); 273 return -EINVAL; 274 } 275 return 0; 276 } 277 278 279 /* 280 * dp_wdi_event_detach() - Detach WDI event 281 * @txrx_pdev: DP pdev handle 282 * 283 * Return: 0 for success. nonzero for failure. 284 */ 285 int 286 dp_wdi_event_detach(struct dp_pdev *txrx_pdev) 287 { 288 int i; 289 wdi_event_subscribe *wdi_sub; 290 if (!txrx_pdev) { 291 QDF_TRACE(QDF_MODULE_ID_DP, QDF_TRACE_LEVEL_ERROR, 292 "Invalid device in %s\nWDI attach failed", __func__); 293 return -EINVAL; 294 } 295 if (!txrx_pdev->wdi_event_list) { 296 return -EINVAL; 297 } 298 for (i = 0; i < WDI_NUM_EVENTS; i++) { 299 wdi_sub = txrx_pdev->wdi_event_list[i]; 300 /* Delete all the subscribers */ 301 dp_wdi_event_del_subs(wdi_sub, i); 302 } 303 if (txrx_pdev->wdi_event_list) { 304 qdf_mem_free(txrx_pdev->wdi_event_list); 305 } 306 return 0; 307 } 308 #endif /* CONFIG_WIN */ 309