1 /* 2 * Copyright 2015 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 #include <drm/drm_crtc.h> 27 #include <drm/drm_vblank.h> 28 29 #include "amdgpu.h" 30 #include "amdgpu_dm.h" 31 #include "dc.h" 32 #include "amdgpu_securedisplay.h" 33 34 static const char *const pipe_crc_sources[] = { 35 "none", 36 "crtc", 37 "crtc dither", 38 "dprx", 39 "dprx dither", 40 "auto", 41 }; 42 43 static enum amdgpu_dm_pipe_crc_source dm_parse_crc_source(const char *source) 44 { 45 if (!source || !strcmp(source, "none")) 46 return AMDGPU_DM_PIPE_CRC_SOURCE_NONE; 47 if (!strcmp(source, "auto") || !strcmp(source, "crtc")) 48 return AMDGPU_DM_PIPE_CRC_SOURCE_CRTC; 49 if (!strcmp(source, "dprx")) 50 return AMDGPU_DM_PIPE_CRC_SOURCE_DPRX; 51 if (!strcmp(source, "crtc dither")) 52 return AMDGPU_DM_PIPE_CRC_SOURCE_CRTC_DITHER; 53 if (!strcmp(source, "dprx dither")) 54 return AMDGPU_DM_PIPE_CRC_SOURCE_DPRX_DITHER; 55 56 return AMDGPU_DM_PIPE_CRC_SOURCE_INVALID; 57 } 58 59 static bool dm_is_crc_source_crtc(enum amdgpu_dm_pipe_crc_source src) 60 { 61 return (src == AMDGPU_DM_PIPE_CRC_SOURCE_CRTC) || 62 (src == AMDGPU_DM_PIPE_CRC_SOURCE_CRTC_DITHER); 63 } 64 65 static bool dm_is_crc_source_dprx(enum amdgpu_dm_pipe_crc_source src) 66 { 67 return (src == AMDGPU_DM_PIPE_CRC_SOURCE_DPRX) || 68 (src == AMDGPU_DM_PIPE_CRC_SOURCE_DPRX_DITHER); 69 } 70 71 static bool dm_need_crc_dither(enum amdgpu_dm_pipe_crc_source src) 72 { 73 return (src == AMDGPU_DM_PIPE_CRC_SOURCE_CRTC_DITHER) || 74 (src == AMDGPU_DM_PIPE_CRC_SOURCE_DPRX_DITHER) || 75 (src == AMDGPU_DM_PIPE_CRC_SOURCE_NONE); 76 } 77 78 const char *const *amdgpu_dm_crtc_get_crc_sources(struct drm_crtc *crtc, 79 size_t *count) 80 { 81 *count = ARRAY_SIZE(pipe_crc_sources); 82 return pipe_crc_sources; 83 } 84 85 #ifdef CONFIG_DRM_AMD_SECURE_DISPLAY 86 static void update_phy_id_mapping(struct amdgpu_device *adev) 87 { 88 struct drm_device *ddev = adev_to_drm(adev); 89 struct amdgpu_display_manager *dm = &adev->dm; 90 struct drm_connector *connector; 91 struct amdgpu_dm_connector *aconnector; 92 struct amdgpu_dm_connector *sort_connector[AMDGPU_DM_MAX_CRTC] = {NULL}; 93 struct drm_connector_list_iter iter; 94 uint8_t idx = 0, idx_2 = 0, connector_cnt = 0; 95 96 dm->secure_display_ctx.phy_mapping_updated = false; 97 98 mutex_lock(&ddev->mode_config.mutex); 99 drm_connector_list_iter_begin(ddev, &iter); 100 drm_for_each_connector_iter(connector, &iter) { 101 102 if (connector->status != connector_status_connected) 103 continue; 104 105 if (idx >= AMDGPU_DM_MAX_CRTC) { 106 DRM_WARN("%s connected connectors exceed max crtc\n", __func__); 107 mutex_unlock(&ddev->mode_config.mutex); 108 return; 109 } 110 111 aconnector = to_amdgpu_dm_connector(connector); 112 113 sort_connector[idx] = aconnector; 114 idx++; 115 connector_cnt++; 116 } 117 drm_connector_list_iter_end(&iter); 118 119 /* sort connectors by link_enc_hw_instance first */ 120 for (idx = connector_cnt; idx > 1 ; idx--) { 121 for (idx_2 = 0; idx_2 < (idx - 1); idx_2++) { 122 if (sort_connector[idx_2]->dc_link->link_enc_hw_inst > 123 sort_connector[idx_2 + 1]->dc_link->link_enc_hw_inst) 124 swap(sort_connector[idx_2], sort_connector[idx_2 + 1]); 125 } 126 } 127 128 /* 129 * Sort mst connectors by RAD. mst connectors with the same enc_hw_instance are already 130 * sorted together above. 131 */ 132 for (idx = 0; idx < connector_cnt; /*Do nothing*/) { 133 if (sort_connector[idx]->mst_root) { 134 uint8_t i, j, k; 135 uint8_t mst_con_cnt = 1; 136 137 for (idx_2 = (idx + 1); idx_2 < connector_cnt; idx_2++) { 138 if (sort_connector[idx_2]->mst_root == sort_connector[idx]->mst_root) 139 mst_con_cnt++; 140 else 141 break; 142 } 143 144 for (i = mst_con_cnt; i > 1; i--) { 145 for (j = idx; j < (idx + i - 2); j++) { 146 int mstb_lct = sort_connector[j]->mst_output_port->parent->lct; 147 int next_mstb_lct = sort_connector[j + 1]->mst_output_port->parent->lct; 148 u8 *rad; 149 u8 *next_rad; 150 bool swap = false; 151 152 /* Sort by mst tree depth first. Then compare RAD if depth is the same*/ 153 if (mstb_lct > next_mstb_lct) { 154 swap = true; 155 } else if (mstb_lct == next_mstb_lct) { 156 if (mstb_lct == 1) { 157 if (sort_connector[j]->mst_output_port->port_num > sort_connector[j + 1]->mst_output_port->port_num) 158 swap = true; 159 } else if (mstb_lct > 1) { 160 rad = sort_connector[j]->mst_output_port->parent->rad; 161 next_rad = sort_connector[j + 1]->mst_output_port->parent->rad; 162 163 for (k = 0; k < mstb_lct - 1; k++) { 164 int shift = (k % 2) ? 0 : 4; 165 int port_num = (rad[k / 2] >> shift) & 0xf; 166 int next_port_num = (next_rad[k / 2] >> shift) & 0xf; 167 168 if (port_num > next_port_num) { 169 swap = true; 170 break; 171 } 172 } 173 } else { 174 DRM_ERROR("MST LCT shouldn't be set as < 1"); 175 mutex_unlock(&ddev->mode_config.mutex); 176 return; 177 } 178 } 179 180 if (swap) 181 swap(sort_connector[j], sort_connector[j + 1]); 182 } 183 } 184 185 idx += mst_con_cnt; 186 } else { 187 idx++; 188 } 189 } 190 191 /* Complete sorting. Assign relavant result to dm->secure_display_ctx.phy_id_mapping[]*/ 192 memset(dm->secure_display_ctx.phy_id_mapping, 0, sizeof(dm->secure_display_ctx.phy_id_mapping)); 193 for (idx = 0; idx < connector_cnt; idx++) { 194 aconnector = sort_connector[idx]; 195 196 dm->secure_display_ctx.phy_id_mapping[idx].assigned = true; 197 dm->secure_display_ctx.phy_id_mapping[idx].is_mst = false; 198 dm->secure_display_ctx.phy_id_mapping[idx].enc_hw_inst = aconnector->dc_link->link_enc_hw_inst; 199 200 if (sort_connector[idx]->mst_root) { 201 dm->secure_display_ctx.phy_id_mapping[idx].is_mst = true; 202 dm->secure_display_ctx.phy_id_mapping[idx].lct = aconnector->mst_output_port->parent->lct; 203 dm->secure_display_ctx.phy_id_mapping[idx].port_num = aconnector->mst_output_port->port_num; 204 memcpy(dm->secure_display_ctx.phy_id_mapping[idx].rad, 205 aconnector->mst_output_port->parent->rad, sizeof(aconnector->mst_output_port->parent->rad)); 206 } 207 } 208 mutex_unlock(&ddev->mode_config.mutex); 209 210 dm->secure_display_ctx.phy_id_mapping_cnt = connector_cnt; 211 dm->secure_display_ctx.phy_mapping_updated = true; 212 } 213 214 static bool get_phy_id(struct amdgpu_display_manager *dm, 215 struct amdgpu_dm_connector *aconnector, uint8_t *phy_id) 216 { 217 int idx, idx_2; 218 bool found = false; 219 220 /* 221 * Assume secure display start after all connectors are probed. The connection 222 * config is static as well 223 */ 224 if (!dm->secure_display_ctx.phy_mapping_updated) { 225 DRM_WARN("%s Should update the phy id table before get it's value", __func__); 226 return false; 227 } 228 229 for (idx = 0; idx < dm->secure_display_ctx.phy_id_mapping_cnt; idx++) { 230 if (!dm->secure_display_ctx.phy_id_mapping[idx].assigned) { 231 DRM_ERROR("phy_id_mapping[%d] should be assigned", idx); 232 return false; 233 } 234 235 if (aconnector->dc_link->link_enc_hw_inst == 236 dm->secure_display_ctx.phy_id_mapping[idx].enc_hw_inst) { 237 if (!dm->secure_display_ctx.phy_id_mapping[idx].is_mst) { 238 found = true; 239 goto out; 240 } else { 241 /* Could caused by wrongly pass mst root connector */ 242 if (!aconnector->mst_output_port) { 243 DRM_ERROR("%s Check mst case but connector without a port assigned", __func__); 244 return false; 245 } 246 247 if (aconnector->mst_root && 248 aconnector->mst_root->mst_mgr.mst_primary == NULL) { 249 DRM_WARN("%s pass in a stale mst connector", __func__); 250 } 251 252 if (aconnector->mst_output_port->parent->lct == dm->secure_display_ctx.phy_id_mapping[idx].lct && 253 aconnector->mst_output_port->port_num == dm->secure_display_ctx.phy_id_mapping[idx].port_num) { 254 if (aconnector->mst_output_port->parent->lct == 1) { 255 found = true; 256 goto out; 257 } else if (aconnector->mst_output_port->parent->lct > 1) { 258 /* Check RAD */ 259 for (idx_2 = 0; idx_2 < aconnector->mst_output_port->parent->lct - 1; idx_2++) { 260 int shift = (idx_2 % 2) ? 0 : 4; 261 int port_num = (aconnector->mst_output_port->parent->rad[idx_2 / 2] >> shift) & 0xf; 262 int port_num2 = (dm->secure_display_ctx.phy_id_mapping[idx].rad[idx_2 / 2] >> shift) & 0xf; 263 264 if (port_num != port_num2) 265 break; 266 } 267 268 if (idx_2 == aconnector->mst_output_port->parent->lct - 1) { 269 found = true; 270 goto out; 271 } 272 } else { 273 DRM_ERROR("lCT should be >= 1"); 274 return false; 275 } 276 } 277 } 278 } 279 } 280 281 out: 282 if (found) { 283 DRM_DEBUG_DRIVER("Associated secure display PHY ID as %d", idx); 284 *phy_id = idx; 285 } else { 286 DRM_WARN("Can't find associated phy ID"); 287 return false; 288 } 289 290 return true; 291 } 292 293 static void amdgpu_dm_set_crc_window_default(struct drm_crtc *crtc, struct dc_stream_state *stream) 294 { 295 struct drm_device *drm_dev = crtc->dev; 296 struct amdgpu_display_manager *dm = &drm_to_adev(drm_dev)->dm; 297 struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc); 298 struct amdgpu_dm_connector *aconnector; 299 bool was_activated; 300 uint8_t phy_id; 301 unsigned long flags; 302 int i; 303 304 spin_lock_irqsave(&drm_dev->event_lock, flags); 305 was_activated = acrtc->dm_irq_params.crc_window_activated; 306 for (i = 0; i < MAX_CRC_WINDOW_NUM; i++) { 307 acrtc->dm_irq_params.window_param[i].x_start = 0; 308 acrtc->dm_irq_params.window_param[i].y_start = 0; 309 acrtc->dm_irq_params.window_param[i].x_end = 0; 310 acrtc->dm_irq_params.window_param[i].y_end = 0; 311 acrtc->dm_irq_params.window_param[i].enable = false; 312 acrtc->dm_irq_params.window_param[i].update_win = false; 313 acrtc->dm_irq_params.window_param[i].skip_frame_cnt = 0; 314 } 315 acrtc->dm_irq_params.crc_window_activated = false; 316 spin_unlock_irqrestore(&drm_dev->event_lock, flags); 317 318 /* Disable secure_display if it was enabled */ 319 if (was_activated) { 320 /* stop ROI update on this crtc */ 321 flush_work(&dm->secure_display_ctx.crtc_ctx[crtc->index].notify_ta_work); 322 flush_work(&dm->secure_display_ctx.crtc_ctx[crtc->index].forward_roi_work); 323 aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context; 324 325 if (aconnector && get_phy_id(dm, aconnector, &phy_id)) { 326 if (dm->secure_display_ctx.support_mul_roi) 327 dc_stream_forward_multiple_crc_window(stream, NULL, phy_id, true); 328 else 329 dc_stream_forward_crc_window(stream, NULL, phy_id, true); 330 } else { 331 DRM_DEBUG_DRIVER("%s Can't find matching phy id", __func__); 332 } 333 } 334 } 335 336 static void amdgpu_dm_crtc_notify_ta_to_read(struct work_struct *work) 337 { 338 struct secure_display_crtc_context *crtc_ctx; 339 struct psp_context *psp; 340 struct ta_securedisplay_cmd *securedisplay_cmd; 341 struct drm_crtc *crtc; 342 struct dc_stream_state *stream; 343 struct amdgpu_dm_connector *aconnector; 344 uint8_t phy_inst; 345 struct amdgpu_display_manager *dm; 346 int ret; 347 348 crtc_ctx = container_of(work, struct secure_display_crtc_context, notify_ta_work); 349 crtc = crtc_ctx->crtc; 350 351 if (!crtc) 352 return; 353 354 psp = &drm_to_adev(crtc->dev)->psp; 355 356 if (!psp->securedisplay_context.context.initialized) { 357 DRM_DEBUG_DRIVER("Secure Display fails to notify PSP TA\n"); 358 return; 359 } 360 361 dm = &drm_to_adev(crtc->dev)->dm; 362 stream = to_amdgpu_crtc(crtc)->dm_irq_params.stream; 363 aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context; 364 if (!aconnector) 365 return; 366 367 mutex_lock(&crtc->dev->mode_config.mutex); 368 if (!get_phy_id(dm, aconnector, &phy_inst)) { 369 DRM_WARN("%s Can't find mapping phy id!", __func__); 370 mutex_unlock(&crtc->dev->mode_config.mutex); 371 return; 372 } 373 mutex_unlock(&crtc->dev->mode_config.mutex); 374 375 /* need lock for multiple crtcs to use the command buffer */ 376 mutex_lock(&psp->securedisplay_context.mutex); 377 378 psp_prep_securedisplay_cmd_buf(psp, &securedisplay_cmd, 379 TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC); 380 381 securedisplay_cmd->securedisplay_in_message.send_roi_crc.phy_id = phy_inst; 382 383 /* PSP TA is expected to finish data transmission over I2C within current frame, 384 * even there are up to 4 crtcs request to send in this frame. 385 */ 386 ret = psp_securedisplay_invoke(psp, TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC); 387 388 if (!ret) { 389 if (securedisplay_cmd->status != TA_SECUREDISPLAY_STATUS__SUCCESS) 390 psp_securedisplay_parse_resp_status(psp, securedisplay_cmd->status); 391 } 392 393 mutex_unlock(&psp->securedisplay_context.mutex); 394 } 395 396 static void 397 amdgpu_dm_forward_crc_window(struct work_struct *work) 398 { 399 struct secure_display_crtc_context *crtc_ctx; 400 struct amdgpu_display_manager *dm; 401 struct drm_crtc *crtc; 402 struct dc_stream_state *stream; 403 struct amdgpu_dm_connector *aconnector; 404 struct crc_window roi_cpy[MAX_CRC_WINDOW_NUM]; 405 unsigned long flags; 406 uint8_t phy_id; 407 408 crtc_ctx = container_of(work, struct secure_display_crtc_context, forward_roi_work); 409 crtc = crtc_ctx->crtc; 410 411 if (!crtc) 412 return; 413 414 dm = &drm_to_adev(crtc->dev)->dm; 415 stream = to_amdgpu_crtc(crtc)->dm_irq_params.stream; 416 aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context; 417 418 if (!aconnector) 419 return; 420 421 mutex_lock(&crtc->dev->mode_config.mutex); 422 if (!get_phy_id(dm, aconnector, &phy_id)) { 423 DRM_WARN("%s Can't find mapping phy id!", __func__); 424 mutex_unlock(&crtc->dev->mode_config.mutex); 425 return; 426 } 427 mutex_unlock(&crtc->dev->mode_config.mutex); 428 429 spin_lock_irqsave(&crtc->dev->event_lock, flags); 430 memcpy(roi_cpy, crtc_ctx->roi, sizeof(struct crc_window) * MAX_CRC_WINDOW_NUM); 431 spin_unlock_irqrestore(&crtc->dev->event_lock, flags); 432 433 mutex_lock(&dm->dc_lock); 434 if (dm->secure_display_ctx.support_mul_roi) 435 dc_stream_forward_multiple_crc_window(stream, roi_cpy, 436 phy_id, false); 437 else 438 dc_stream_forward_crc_window(stream, &roi_cpy[0].rect, 439 phy_id, false); 440 mutex_unlock(&dm->dc_lock); 441 } 442 443 bool amdgpu_dm_crc_window_is_activated(struct drm_crtc *crtc) 444 { 445 struct drm_device *drm_dev = crtc->dev; 446 struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc); 447 bool ret = false; 448 449 spin_lock_irq(&drm_dev->event_lock); 450 ret = acrtc->dm_irq_params.crc_window_activated; 451 spin_unlock_irq(&drm_dev->event_lock); 452 453 return ret; 454 } 455 #endif 456 457 int 458 amdgpu_dm_crtc_verify_crc_source(struct drm_crtc *crtc, const char *src_name, 459 size_t *values_cnt) 460 { 461 enum amdgpu_dm_pipe_crc_source source = dm_parse_crc_source(src_name); 462 463 if (source < 0) { 464 DRM_DEBUG_DRIVER("Unknown CRC source %s for CRTC%d\n", 465 src_name, crtc->index); 466 return -EINVAL; 467 } 468 469 *values_cnt = 3; 470 return 0; 471 } 472 473 int amdgpu_dm_crtc_configure_crc_source(struct drm_crtc *crtc, 474 struct dm_crtc_state *dm_crtc_state, 475 enum amdgpu_dm_pipe_crc_source source) 476 { 477 struct amdgpu_device *adev = drm_to_adev(crtc->dev); 478 struct dc_stream_state *stream_state = dm_crtc_state->stream; 479 bool enable = amdgpu_dm_is_valid_crc_source(source); 480 int ret = 0; 481 482 /* Configuration will be deferred to stream enable. */ 483 if (!stream_state) 484 return -EINVAL; 485 486 mutex_lock(&adev->dm.dc_lock); 487 488 /* Enable or disable CRTC CRC generation */ 489 if (dm_is_crc_source_crtc(source) || source == AMDGPU_DM_PIPE_CRC_SOURCE_NONE) { 490 if (!dc_stream_configure_crc(stream_state->ctx->dc, 491 stream_state, NULL, enable, enable)) { 492 ret = -EINVAL; 493 goto unlock; 494 } 495 } 496 497 /* Configure dithering */ 498 if (!dm_need_crc_dither(source)) { 499 dc_stream_set_dither_option(stream_state, DITHER_OPTION_TRUN8); 500 dc_stream_set_dyn_expansion(stream_state->ctx->dc, stream_state, 501 DYN_EXPANSION_DISABLE); 502 } else { 503 dc_stream_set_dither_option(stream_state, 504 DITHER_OPTION_DEFAULT); 505 dc_stream_set_dyn_expansion(stream_state->ctx->dc, stream_state, 506 DYN_EXPANSION_AUTO); 507 } 508 509 unlock: 510 mutex_unlock(&adev->dm.dc_lock); 511 512 return ret; 513 } 514 515 int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name) 516 { 517 enum amdgpu_dm_pipe_crc_source source = dm_parse_crc_source(src_name); 518 enum amdgpu_dm_pipe_crc_source cur_crc_src; 519 struct drm_crtc_commit *commit; 520 struct dm_crtc_state *crtc_state; 521 struct drm_device *drm_dev = crtc->dev; 522 #if defined(CONFIG_DRM_AMD_SECURE_DISPLAY) 523 struct amdgpu_device *adev = drm_to_adev(drm_dev); 524 struct amdgpu_display_manager *dm = &adev->dm; 525 #endif 526 struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc); 527 struct drm_dp_aux *aux = NULL; 528 bool enable = false; 529 bool enabled = false; 530 int ret = 0; 531 532 if (source < 0) { 533 DRM_DEBUG_DRIVER("Unknown CRC source %s for CRTC%d\n", 534 src_name, crtc->index); 535 return -EINVAL; 536 } 537 538 ret = drm_modeset_lock(&crtc->mutex, NULL); 539 if (ret) 540 return ret; 541 542 spin_lock(&crtc->commit_lock); 543 commit = list_first_entry_or_null(&crtc->commit_list, 544 struct drm_crtc_commit, commit_entry); 545 if (commit) 546 drm_crtc_commit_get(commit); 547 spin_unlock(&crtc->commit_lock); 548 549 if (commit) { 550 /* 551 * Need to wait for all outstanding programming to complete 552 * in commit tail since it can modify CRC related fields and 553 * hardware state. Since we're holding the CRTC lock we're 554 * guaranteed that no other commit work can be queued off 555 * before we modify the state below. 556 */ 557 ret = wait_for_completion_interruptible_timeout( 558 &commit->hw_done, 10 * HZ); 559 if (ret) 560 goto cleanup; 561 } 562 563 enable = amdgpu_dm_is_valid_crc_source(source); 564 crtc_state = to_dm_crtc_state(crtc->state); 565 spin_lock_irq(&drm_dev->event_lock); 566 cur_crc_src = acrtc->dm_irq_params.crc_src; 567 spin_unlock_irq(&drm_dev->event_lock); 568 569 /* 570 * USER REQ SRC | CURRENT SRC | BEHAVIOR 571 * ----------------------------- 572 * None | None | Do nothing 573 * None | CRTC | Disable CRTC CRC, set default to dither 574 * None | DPRX | Disable DPRX CRC, need 'aux', set default to dither 575 * None | CRTC DITHER | Disable CRTC CRC 576 * None | DPRX DITHER | Disable DPRX CRC, need 'aux' 577 * CRTC | XXXX | Enable CRTC CRC, no dither 578 * DPRX | XXXX | Enable DPRX CRC, need 'aux', no dither 579 * CRTC DITHER | XXXX | Enable CRTC CRC, set dither 580 * DPRX DITHER | XXXX | Enable DPRX CRC, need 'aux', set dither 581 */ 582 if (dm_is_crc_source_dprx(source) || 583 (source == AMDGPU_DM_PIPE_CRC_SOURCE_NONE && 584 dm_is_crc_source_dprx(cur_crc_src))) { 585 struct amdgpu_dm_connector *aconn = NULL; 586 struct drm_connector *connector; 587 struct drm_connector_list_iter conn_iter; 588 589 drm_connector_list_iter_begin(crtc->dev, &conn_iter); 590 drm_for_each_connector_iter(connector, &conn_iter) { 591 if (!connector->state || connector->state->crtc != crtc) 592 continue; 593 594 if (connector->connector_type == DRM_MODE_CONNECTOR_WRITEBACK) 595 continue; 596 597 aconn = to_amdgpu_dm_connector(connector); 598 break; 599 } 600 drm_connector_list_iter_end(&conn_iter); 601 602 if (!aconn) { 603 DRM_DEBUG_DRIVER("No amd connector matching CRTC-%d\n", crtc->index); 604 ret = -EINVAL; 605 goto cleanup; 606 } 607 608 aux = (aconn->mst_output_port) ? &aconn->mst_output_port->aux : &aconn->dm_dp_aux.aux; 609 610 if (!aux) { 611 DRM_DEBUG_DRIVER("No dp aux for amd connector\n"); 612 ret = -EINVAL; 613 goto cleanup; 614 } 615 616 if ((aconn->base.connector_type != DRM_MODE_CONNECTOR_DisplayPort) && 617 (aconn->base.connector_type != DRM_MODE_CONNECTOR_eDP)) { 618 DRM_DEBUG_DRIVER("No DP connector available for CRC source\n"); 619 ret = -EINVAL; 620 goto cleanup; 621 } 622 623 } 624 625 #if defined(CONFIG_DRM_AMD_SECURE_DISPLAY) 626 /* Reset secure_display when we change crc source from debugfs */ 627 amdgpu_dm_set_crc_window_default(crtc, crtc_state->stream); 628 #endif 629 630 if (amdgpu_dm_crtc_configure_crc_source(crtc, crtc_state, source)) { 631 ret = -EINVAL; 632 goto cleanup; 633 } 634 635 /* 636 * Reading the CRC requires the vblank interrupt handler to be 637 * enabled. Keep a reference until CRC capture stops. 638 */ 639 enabled = amdgpu_dm_is_valid_crc_source(cur_crc_src); 640 if (!enabled && enable) { 641 ret = drm_crtc_vblank_get(crtc); 642 if (ret) 643 goto cleanup; 644 645 if (dm_is_crc_source_dprx(source)) { 646 if (drm_dp_start_crc(aux, crtc)) { 647 DRM_DEBUG_DRIVER("dp start crc failed\n"); 648 ret = -EINVAL; 649 goto cleanup; 650 } 651 } 652 } else if (enabled && !enable) { 653 drm_crtc_vblank_put(crtc); 654 if (dm_is_crc_source_dprx(source)) { 655 if (drm_dp_stop_crc(aux)) { 656 DRM_DEBUG_DRIVER("dp stop crc failed\n"); 657 ret = -EINVAL; 658 goto cleanup; 659 } 660 } 661 } 662 663 spin_lock_irq(&drm_dev->event_lock); 664 acrtc->dm_irq_params.crc_src = source; 665 spin_unlock_irq(&drm_dev->event_lock); 666 667 /* Reset crc_skipped on dm state */ 668 crtc_state->crc_skip_count = 0; 669 670 #if defined(CONFIG_DRM_AMD_SECURE_DISPLAY) 671 /* Initialize phy id mapping table for secure display*/ 672 if (!dm->secure_display_ctx.phy_mapping_updated) 673 update_phy_id_mapping(adev); 674 #endif 675 676 cleanup: 677 if (commit) 678 drm_crtc_commit_put(commit); 679 680 drm_modeset_unlock(&crtc->mutex); 681 682 return ret; 683 } 684 685 /** 686 * amdgpu_dm_crtc_handle_crc_irq: Report to DRM the CRC on given CRTC. 687 * @crtc: DRM CRTC object. 688 * 689 * This function should be called at the end of a vblank, when the fb has been 690 * fully processed through the pipe. 691 */ 692 void amdgpu_dm_crtc_handle_crc_irq(struct drm_crtc *crtc) 693 { 694 struct dm_crtc_state *crtc_state; 695 struct dc_stream_state *stream_state; 696 struct drm_device *drm_dev = NULL; 697 enum amdgpu_dm_pipe_crc_source cur_crc_src; 698 struct amdgpu_crtc *acrtc = NULL; 699 uint32_t crcs[3]; 700 unsigned long flags; 701 702 if (crtc == NULL) 703 return; 704 705 crtc_state = to_dm_crtc_state(crtc->state); 706 stream_state = crtc_state->stream; 707 acrtc = to_amdgpu_crtc(crtc); 708 drm_dev = crtc->dev; 709 710 spin_lock_irqsave(&drm_dev->event_lock, flags); 711 cur_crc_src = acrtc->dm_irq_params.crc_src; 712 spin_unlock_irqrestore(&drm_dev->event_lock, flags); 713 714 /* Early return if CRC capture is not enabled. */ 715 if (!amdgpu_dm_is_valid_crc_source(cur_crc_src)) 716 return; 717 718 /* 719 * Since flipping and crc enablement happen asynchronously, we - more 720 * often than not - will be returning an 'uncooked' crc on first frame. 721 * Probably because hw isn't ready yet. For added security, skip the 722 * first two CRC values. 723 */ 724 if (crtc_state->crc_skip_count < 2) { 725 crtc_state->crc_skip_count += 1; 726 return; 727 } 728 729 if (dm_is_crc_source_crtc(cur_crc_src)) { 730 if (!dc_stream_get_crc(stream_state->ctx->dc, stream_state, 0, 731 &crcs[0], &crcs[1], &crcs[2])) 732 return; 733 734 drm_crtc_add_crc_entry(crtc, true, 735 drm_crtc_accurate_vblank_count(crtc), crcs); 736 } 737 } 738 739 #if defined(CONFIG_DRM_AMD_SECURE_DISPLAY) 740 void amdgpu_dm_crtc_handle_crc_window_irq(struct drm_crtc *crtc) 741 { 742 struct drm_device *drm_dev = NULL; 743 enum amdgpu_dm_pipe_crc_source cur_crc_src; 744 struct amdgpu_crtc *acrtc = NULL; 745 struct amdgpu_device *adev = NULL; 746 struct secure_display_crtc_context *crtc_ctx = NULL; 747 bool reset_crc_frame_count[MAX_CRC_WINDOW_NUM] = {false}; 748 uint32_t crc_r[MAX_CRC_WINDOW_NUM] = {0}; 749 uint32_t crc_g[MAX_CRC_WINDOW_NUM] = {0}; 750 uint32_t crc_b[MAX_CRC_WINDOW_NUM] = {0}; 751 unsigned long flags1; 752 bool forward_roi_change = false; 753 bool notify_ta = false; 754 bool all_crc_ready = true; 755 int i; 756 757 if (crtc == NULL) 758 return; 759 760 acrtc = to_amdgpu_crtc(crtc); 761 adev = drm_to_adev(crtc->dev); 762 drm_dev = crtc->dev; 763 764 spin_lock_irqsave(&drm_dev->event_lock, flags1); 765 cur_crc_src = acrtc->dm_irq_params.crc_src; 766 767 /* Early return if CRC capture is not enabled. */ 768 if (!amdgpu_dm_is_valid_crc_source(cur_crc_src) || 769 !dm_is_crc_source_crtc(cur_crc_src)) { 770 spin_unlock_irqrestore(&drm_dev->event_lock, flags1); 771 return; 772 } 773 774 if (!acrtc->dm_irq_params.crc_window_activated) { 775 spin_unlock_irqrestore(&drm_dev->event_lock, flags1); 776 return; 777 } 778 779 crtc_ctx = &adev->dm.secure_display_ctx.crtc_ctx[acrtc->crtc_id]; 780 if (WARN_ON(crtc_ctx->crtc != crtc)) { 781 /* We have set the crtc when creating secure_display_crtc_context, 782 * don't expect it to be changed here. 783 */ 784 crtc_ctx->crtc = crtc; 785 } 786 787 for (i = 0; i < MAX_CRC_WINDOW_NUM; i++) { 788 crtc_ctx->roi[i].enable = acrtc->dm_irq_params.window_param[i].enable; 789 790 if (!acrtc->dm_irq_params.window_param[i].enable) { 791 crtc_ctx->crc_info.crc[i].crc_ready = false; 792 continue; 793 } 794 795 if (acrtc->dm_irq_params.window_param[i].skip_frame_cnt) { 796 acrtc->dm_irq_params.window_param[i].skip_frame_cnt -= 1; 797 crtc_ctx->crc_info.crc[i].crc_ready = false; 798 continue; 799 } 800 801 if (acrtc->dm_irq_params.window_param[i].update_win) { 802 /* prepare work for dmub to update ROI */ 803 crtc_ctx->roi[i].rect.x = acrtc->dm_irq_params.window_param[i].x_start; 804 crtc_ctx->roi[i].rect.y = acrtc->dm_irq_params.window_param[i].y_start; 805 crtc_ctx->roi[i].rect.width = acrtc->dm_irq_params.window_param[i].x_end - 806 acrtc->dm_irq_params.window_param[i].x_start; 807 crtc_ctx->roi[i].rect.height = acrtc->dm_irq_params.window_param[i].y_end - 808 acrtc->dm_irq_params.window_param[i].y_start; 809 810 forward_roi_change = true; 811 812 reset_crc_frame_count[i] = true; 813 814 acrtc->dm_irq_params.window_param[i].update_win = false; 815 816 /* Statically skip 1 frame, because we may need to wait below things 817 * before sending ROI to dmub: 818 * 1. We defer the work by using system workqueue. 819 * 2. We may need to wait for dc_lock before accessing dmub. 820 */ 821 acrtc->dm_irq_params.window_param[i].skip_frame_cnt = 1; 822 crtc_ctx->crc_info.crc[i].crc_ready = false; 823 } else { 824 struct dc_stream_state *stream_state = to_dm_crtc_state(crtc->state)->stream; 825 826 if (!dc_stream_get_crc(stream_state->ctx->dc, stream_state, i, 827 &crc_r[i], &crc_g[i], &crc_b[i])) 828 DRM_ERROR("Secure Display: fail to get crc from engine %d\n", i); 829 830 /* prepare work for psp to read ROI/CRC and send to I2C */ 831 notify_ta = true; 832 /* crc ready for psp to read out */ 833 crtc_ctx->crc_info.crc[i].crc_ready = true; 834 } 835 } 836 837 spin_unlock_irqrestore(&drm_dev->event_lock, flags1); 838 839 if (forward_roi_change) 840 schedule_work(&crtc_ctx->forward_roi_work); 841 842 if (notify_ta) 843 schedule_work(&crtc_ctx->notify_ta_work); 844 845 spin_lock_irqsave(&crtc_ctx->crc_info.lock, flags1); 846 for (i = 0; i < MAX_CRC_WINDOW_NUM; i++) { 847 crtc_ctx->crc_info.crc[i].crc_R = crc_r[i]; 848 crtc_ctx->crc_info.crc[i].crc_G = crc_g[i]; 849 crtc_ctx->crc_info.crc[i].crc_B = crc_b[i]; 850 851 if (!crtc_ctx->roi[i].enable) { 852 crtc_ctx->crc_info.crc[i].frame_count = 0; 853 continue; 854 } 855 856 if (!crtc_ctx->crc_info.crc[i].crc_ready) 857 all_crc_ready = false; 858 859 if (reset_crc_frame_count[i] || crtc_ctx->crc_info.crc[i].frame_count == UINT_MAX) 860 /* Reset the reference frame count after user update the ROI 861 * or it reaches the maximum value. 862 */ 863 crtc_ctx->crc_info.crc[i].frame_count = 0; 864 else 865 crtc_ctx->crc_info.crc[i].frame_count += 1; 866 } 867 spin_unlock_irqrestore(&crtc_ctx->crc_info.lock, flags1); 868 869 if (all_crc_ready) 870 complete_all(&crtc_ctx->crc_info.completion); 871 } 872 873 void amdgpu_dm_crtc_secure_display_create_contexts(struct amdgpu_device *adev) 874 { 875 struct secure_display_crtc_context *crtc_ctx = NULL; 876 int i; 877 878 crtc_ctx = kcalloc(adev->mode_info.num_crtc, 879 sizeof(struct secure_display_crtc_context), 880 GFP_KERNEL); 881 882 if (!crtc_ctx) { 883 adev->dm.secure_display_ctx.crtc_ctx = NULL; 884 return; 885 } 886 887 for (i = 0; i < adev->mode_info.num_crtc; i++) { 888 INIT_WORK(&crtc_ctx[i].forward_roi_work, amdgpu_dm_forward_crc_window); 889 INIT_WORK(&crtc_ctx[i].notify_ta_work, amdgpu_dm_crtc_notify_ta_to_read); 890 crtc_ctx[i].crtc = &adev->mode_info.crtcs[i]->base; 891 spin_lock_init(&crtc_ctx[i].crc_info.lock); 892 } 893 894 adev->dm.secure_display_ctx.crtc_ctx = crtc_ctx; 895 return; 896 } 897 #endif 898