1 /* 2 * Copyright 2011 Red Hat 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: Ben Skeggs 23 */ 24 #include "disp.h" 25 #include "atom.h" 26 #include "core.h" 27 #include "head.h" 28 #include "wndw.h" 29 30 #include <linux/dma-mapping.h> 31 #include <linux/hdmi.h> 32 33 #include <drm/drmP.h> 34 #include <drm/drm_atomic_helper.h> 35 #include <drm/drm_crtc_helper.h> 36 #include <drm/drm_dp_helper.h> 37 #include <drm/drm_fb_helper.h> 38 #include <drm/drm_plane_helper.h> 39 #include <drm/drm_scdc_helper.h> 40 #include <drm/drm_edid.h> 41 42 #include <nvif/class.h> 43 #include <nvif/cl0002.h> 44 #include <nvif/cl5070.h> 45 #include <nvif/cl507d.h> 46 #include <nvif/event.h> 47 48 #include "nouveau_drv.h" 49 #include "nouveau_dma.h" 50 #include "nouveau_gem.h" 51 #include "nouveau_connector.h" 52 #include "nouveau_encoder.h" 53 #include "nouveau_fence.h" 54 #include "nouveau_fbcon.h" 55 56 #include <subdev/bios/dp.h> 57 58 /****************************************************************************** 59 * Atomic state 60 *****************************************************************************/ 61 62 struct nv50_outp_atom { 63 struct list_head head; 64 65 struct drm_encoder *encoder; 66 bool flush_disable; 67 68 union nv50_outp_atom_mask { 69 struct { 70 bool ctrl:1; 71 }; 72 u8 mask; 73 } set, clr; 74 }; 75 76 /****************************************************************************** 77 * EVO channel 78 *****************************************************************************/ 79 80 static int 81 nv50_chan_create(struct nvif_device *device, struct nvif_object *disp, 82 const s32 *oclass, u8 head, void *data, u32 size, 83 struct nv50_chan *chan) 84 { 85 struct nvif_sclass *sclass; 86 int ret, i, n; 87 88 chan->device = device; 89 90 ret = n = nvif_object_sclass_get(disp, &sclass); 91 if (ret < 0) 92 return ret; 93 94 while (oclass[0]) { 95 for (i = 0; i < n; i++) { 96 if (sclass[i].oclass == oclass[0]) { 97 ret = nvif_object_init(disp, 0, oclass[0], 98 data, size, &chan->user); 99 if (ret == 0) 100 nvif_object_map(&chan->user, NULL, 0); 101 nvif_object_sclass_put(&sclass); 102 return ret; 103 } 104 } 105 oclass++; 106 } 107 108 nvif_object_sclass_put(&sclass); 109 return -ENOSYS; 110 } 111 112 static void 113 nv50_chan_destroy(struct nv50_chan *chan) 114 { 115 nvif_object_fini(&chan->user); 116 } 117 118 /****************************************************************************** 119 * DMA EVO channel 120 *****************************************************************************/ 121 122 void 123 nv50_dmac_destroy(struct nv50_dmac *dmac) 124 { 125 nvif_object_fini(&dmac->vram); 126 nvif_object_fini(&dmac->sync); 127 128 nv50_chan_destroy(&dmac->base); 129 130 nvif_mem_fini(&dmac->push); 131 } 132 133 int 134 nv50_dmac_create(struct nvif_device *device, struct nvif_object *disp, 135 const s32 *oclass, u8 head, void *data, u32 size, u64 syncbuf, 136 struct nv50_dmac *dmac) 137 { 138 struct nouveau_cli *cli = (void *)device->object.client; 139 struct nv50_disp_core_channel_dma_v0 *args = data; 140 u8 type = NVIF_MEM_COHERENT; 141 int ret; 142 143 mutex_init(&dmac->lock); 144 145 /* Pascal added support for 47-bit physical addresses, but some 146 * parts of EVO still only accept 40-bit PAs. 147 * 148 * To avoid issues on systems with large amounts of RAM, and on 149 * systems where an IOMMU maps pages at a high address, we need 150 * to allocate push buffers in VRAM instead. 151 * 152 * This appears to match NVIDIA's behaviour on Pascal. 153 */ 154 if (device->info.family == NV_DEVICE_INFO_V0_PASCAL) 155 type |= NVIF_MEM_VRAM; 156 157 ret = nvif_mem_init_map(&cli->mmu, type, 0x1000, &dmac->push); 158 if (ret) 159 return ret; 160 161 dmac->ptr = dmac->push.object.map.ptr; 162 163 args->pushbuf = nvif_handle(&dmac->push.object); 164 165 ret = nv50_chan_create(device, disp, oclass, head, data, size, 166 &dmac->base); 167 if (ret) 168 return ret; 169 170 if (!syncbuf) 171 return 0; 172 173 ret = nvif_object_init(&dmac->base.user, 0xf0000000, NV_DMA_IN_MEMORY, 174 &(struct nv_dma_v0) { 175 .target = NV_DMA_V0_TARGET_VRAM, 176 .access = NV_DMA_V0_ACCESS_RDWR, 177 .start = syncbuf + 0x0000, 178 .limit = syncbuf + 0x0fff, 179 }, sizeof(struct nv_dma_v0), 180 &dmac->sync); 181 if (ret) 182 return ret; 183 184 ret = nvif_object_init(&dmac->base.user, 0xf0000001, NV_DMA_IN_MEMORY, 185 &(struct nv_dma_v0) { 186 .target = NV_DMA_V0_TARGET_VRAM, 187 .access = NV_DMA_V0_ACCESS_RDWR, 188 .start = 0, 189 .limit = device->info.ram_user - 1, 190 }, sizeof(struct nv_dma_v0), 191 &dmac->vram); 192 if (ret) 193 return ret; 194 195 return ret; 196 } 197 198 /****************************************************************************** 199 * EVO channel helpers 200 *****************************************************************************/ 201 static void 202 evo_flush(struct nv50_dmac *dmac) 203 { 204 /* Push buffer fetches are not coherent with BAR1, we need to ensure 205 * writes have been flushed right through to VRAM before writing PUT. 206 */ 207 if (dmac->push.type & NVIF_MEM_VRAM) { 208 struct nvif_device *device = dmac->base.device; 209 nvif_wr32(&device->object, 0x070000, 0x00000001); 210 nvif_msec(device, 2000, 211 if (!(nvif_rd32(&device->object, 0x070000) & 0x00000002)) 212 break; 213 ); 214 } 215 } 216 217 u32 * 218 evo_wait(struct nv50_dmac *evoc, int nr) 219 { 220 struct nv50_dmac *dmac = evoc; 221 struct nvif_device *device = dmac->base.device; 222 u32 put = nvif_rd32(&dmac->base.user, 0x0000) / 4; 223 224 mutex_lock(&dmac->lock); 225 if (put + nr >= (PAGE_SIZE / 4) - 8) { 226 dmac->ptr[put] = 0x20000000; 227 evo_flush(dmac); 228 229 nvif_wr32(&dmac->base.user, 0x0000, 0x00000000); 230 if (nvif_msec(device, 2000, 231 if (!nvif_rd32(&dmac->base.user, 0x0004)) 232 break; 233 ) < 0) { 234 mutex_unlock(&dmac->lock); 235 pr_err("nouveau: evo channel stalled\n"); 236 return NULL; 237 } 238 239 put = 0; 240 } 241 242 return dmac->ptr + put; 243 } 244 245 void 246 evo_kick(u32 *push, struct nv50_dmac *evoc) 247 { 248 struct nv50_dmac *dmac = evoc; 249 250 evo_flush(dmac); 251 252 nvif_wr32(&dmac->base.user, 0x0000, (push - dmac->ptr) << 2); 253 mutex_unlock(&dmac->lock); 254 } 255 256 /****************************************************************************** 257 * Output path helpers 258 *****************************************************************************/ 259 static void 260 nv50_outp_release(struct nouveau_encoder *nv_encoder) 261 { 262 struct nv50_disp *disp = nv50_disp(nv_encoder->base.base.dev); 263 struct { 264 struct nv50_disp_mthd_v1 base; 265 } args = { 266 .base.version = 1, 267 .base.method = NV50_DISP_MTHD_V1_RELEASE, 268 .base.hasht = nv_encoder->dcb->hasht, 269 .base.hashm = nv_encoder->dcb->hashm, 270 }; 271 272 nvif_mthd(&disp->disp->object, 0, &args, sizeof(args)); 273 nv_encoder->or = -1; 274 nv_encoder->link = 0; 275 } 276 277 static int 278 nv50_outp_acquire(struct nouveau_encoder *nv_encoder) 279 { 280 struct nouveau_drm *drm = nouveau_drm(nv_encoder->base.base.dev); 281 struct nv50_disp *disp = nv50_disp(drm->dev); 282 struct { 283 struct nv50_disp_mthd_v1 base; 284 struct nv50_disp_acquire_v0 info; 285 } args = { 286 .base.version = 1, 287 .base.method = NV50_DISP_MTHD_V1_ACQUIRE, 288 .base.hasht = nv_encoder->dcb->hasht, 289 .base.hashm = nv_encoder->dcb->hashm, 290 }; 291 int ret; 292 293 ret = nvif_mthd(&disp->disp->object, 0, &args, sizeof(args)); 294 if (ret) { 295 NV_ERROR(drm, "error acquiring output path: %d\n", ret); 296 return ret; 297 } 298 299 nv_encoder->or = args.info.or; 300 nv_encoder->link = args.info.link; 301 return 0; 302 } 303 304 static int 305 nv50_outp_atomic_check_view(struct drm_encoder *encoder, 306 struct drm_crtc_state *crtc_state, 307 struct drm_connector_state *conn_state, 308 struct drm_display_mode *native_mode) 309 { 310 struct drm_display_mode *adjusted_mode = &crtc_state->adjusted_mode; 311 struct drm_display_mode *mode = &crtc_state->mode; 312 struct drm_connector *connector = conn_state->connector; 313 struct nouveau_conn_atom *asyc = nouveau_conn_atom(conn_state); 314 struct nouveau_drm *drm = nouveau_drm(encoder->dev); 315 316 NV_ATOMIC(drm, "%s atomic_check\n", encoder->name); 317 asyc->scaler.full = false; 318 if (!native_mode) 319 return 0; 320 321 if (asyc->scaler.mode == DRM_MODE_SCALE_NONE) { 322 switch (connector->connector_type) { 323 case DRM_MODE_CONNECTOR_LVDS: 324 case DRM_MODE_CONNECTOR_eDP: 325 /* Force use of scaler for non-EDID modes. */ 326 if (adjusted_mode->type & DRM_MODE_TYPE_DRIVER) 327 break; 328 mode = native_mode; 329 asyc->scaler.full = true; 330 break; 331 default: 332 break; 333 } 334 } else { 335 mode = native_mode; 336 } 337 338 if (!drm_mode_equal(adjusted_mode, mode)) { 339 drm_mode_copy(adjusted_mode, mode); 340 crtc_state->mode_changed = true; 341 } 342 343 return 0; 344 } 345 346 static int 347 nv50_outp_atomic_check(struct drm_encoder *encoder, 348 struct drm_crtc_state *crtc_state, 349 struct drm_connector_state *conn_state) 350 { 351 struct nouveau_connector *nv_connector = 352 nouveau_connector(conn_state->connector); 353 return nv50_outp_atomic_check_view(encoder, crtc_state, conn_state, 354 nv_connector->native_mode); 355 } 356 357 /****************************************************************************** 358 * DAC 359 *****************************************************************************/ 360 static void 361 nv50_dac_disable(struct drm_encoder *encoder) 362 { 363 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 364 struct nv50_core *core = nv50_disp(encoder->dev)->core; 365 if (nv_encoder->crtc) 366 core->func->dac->ctrl(core, nv_encoder->or, 0x00000000, NULL); 367 nv_encoder->crtc = NULL; 368 nv50_outp_release(nv_encoder); 369 } 370 371 static void 372 nv50_dac_enable(struct drm_encoder *encoder) 373 { 374 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 375 struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc); 376 struct nv50_head_atom *asyh = nv50_head_atom(nv_crtc->base.state); 377 struct nv50_core *core = nv50_disp(encoder->dev)->core; 378 379 nv50_outp_acquire(nv_encoder); 380 381 core->func->dac->ctrl(core, nv_encoder->or, 1 << nv_crtc->index, asyh); 382 asyh->or.depth = 0; 383 384 nv_encoder->crtc = encoder->crtc; 385 } 386 387 static enum drm_connector_status 388 nv50_dac_detect(struct drm_encoder *encoder, struct drm_connector *connector) 389 { 390 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 391 struct nv50_disp *disp = nv50_disp(encoder->dev); 392 struct { 393 struct nv50_disp_mthd_v1 base; 394 struct nv50_disp_dac_load_v0 load; 395 } args = { 396 .base.version = 1, 397 .base.method = NV50_DISP_MTHD_V1_DAC_LOAD, 398 .base.hasht = nv_encoder->dcb->hasht, 399 .base.hashm = nv_encoder->dcb->hashm, 400 }; 401 int ret; 402 403 args.load.data = nouveau_drm(encoder->dev)->vbios.dactestval; 404 if (args.load.data == 0) 405 args.load.data = 340; 406 407 ret = nvif_mthd(&disp->disp->object, 0, &args, sizeof(args)); 408 if (ret || !args.load.load) 409 return connector_status_disconnected; 410 411 return connector_status_connected; 412 } 413 414 static const struct drm_encoder_helper_funcs 415 nv50_dac_help = { 416 .atomic_check = nv50_outp_atomic_check, 417 .enable = nv50_dac_enable, 418 .disable = nv50_dac_disable, 419 .detect = nv50_dac_detect 420 }; 421 422 static void 423 nv50_dac_destroy(struct drm_encoder *encoder) 424 { 425 drm_encoder_cleanup(encoder); 426 kfree(encoder); 427 } 428 429 static const struct drm_encoder_funcs 430 nv50_dac_func = { 431 .destroy = nv50_dac_destroy, 432 }; 433 434 static int 435 nv50_dac_create(struct drm_connector *connector, struct dcb_output *dcbe) 436 { 437 struct nouveau_drm *drm = nouveau_drm(connector->dev); 438 struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device); 439 struct nvkm_i2c_bus *bus; 440 struct nouveau_encoder *nv_encoder; 441 struct drm_encoder *encoder; 442 int type = DRM_MODE_ENCODER_DAC; 443 444 nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL); 445 if (!nv_encoder) 446 return -ENOMEM; 447 nv_encoder->dcb = dcbe; 448 449 bus = nvkm_i2c_bus_find(i2c, dcbe->i2c_index); 450 if (bus) 451 nv_encoder->i2c = &bus->i2c; 452 453 encoder = to_drm_encoder(nv_encoder); 454 encoder->possible_crtcs = dcbe->heads; 455 encoder->possible_clones = 0; 456 drm_encoder_init(connector->dev, encoder, &nv50_dac_func, type, 457 "dac-%04x-%04x", dcbe->hasht, dcbe->hashm); 458 drm_encoder_helper_add(encoder, &nv50_dac_help); 459 460 drm_connector_attach_encoder(connector, encoder); 461 return 0; 462 } 463 464 /****************************************************************************** 465 * Audio 466 *****************************************************************************/ 467 static void 468 nv50_audio_disable(struct drm_encoder *encoder, struct nouveau_crtc *nv_crtc) 469 { 470 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 471 struct nv50_disp *disp = nv50_disp(encoder->dev); 472 struct { 473 struct nv50_disp_mthd_v1 base; 474 struct nv50_disp_sor_hda_eld_v0 eld; 475 } args = { 476 .base.version = 1, 477 .base.method = NV50_DISP_MTHD_V1_SOR_HDA_ELD, 478 .base.hasht = nv_encoder->dcb->hasht, 479 .base.hashm = (0xf0ff & nv_encoder->dcb->hashm) | 480 (0x0100 << nv_crtc->index), 481 }; 482 483 nvif_mthd(&disp->disp->object, 0, &args, sizeof(args)); 484 } 485 486 static void 487 nv50_audio_enable(struct drm_encoder *encoder, struct drm_display_mode *mode) 488 { 489 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 490 struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc); 491 struct nouveau_connector *nv_connector; 492 struct nv50_disp *disp = nv50_disp(encoder->dev); 493 struct __packed { 494 struct { 495 struct nv50_disp_mthd_v1 mthd; 496 struct nv50_disp_sor_hda_eld_v0 eld; 497 } base; 498 u8 data[sizeof(nv_connector->base.eld)]; 499 } args = { 500 .base.mthd.version = 1, 501 .base.mthd.method = NV50_DISP_MTHD_V1_SOR_HDA_ELD, 502 .base.mthd.hasht = nv_encoder->dcb->hasht, 503 .base.mthd.hashm = (0xf0ff & nv_encoder->dcb->hashm) | 504 (0x0100 << nv_crtc->index), 505 }; 506 507 nv_connector = nouveau_encoder_connector_get(nv_encoder); 508 if (!drm_detect_monitor_audio(nv_connector->edid)) 509 return; 510 511 memcpy(args.data, nv_connector->base.eld, sizeof(args.data)); 512 513 nvif_mthd(&disp->disp->object, 0, &args, 514 sizeof(args.base) + drm_eld_size(args.data)); 515 } 516 517 /****************************************************************************** 518 * HDMI 519 *****************************************************************************/ 520 static void 521 nv50_hdmi_disable(struct drm_encoder *encoder, struct nouveau_crtc *nv_crtc) 522 { 523 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 524 struct nv50_disp *disp = nv50_disp(encoder->dev); 525 struct { 526 struct nv50_disp_mthd_v1 base; 527 struct nv50_disp_sor_hdmi_pwr_v0 pwr; 528 } args = { 529 .base.version = 1, 530 .base.method = NV50_DISP_MTHD_V1_SOR_HDMI_PWR, 531 .base.hasht = nv_encoder->dcb->hasht, 532 .base.hashm = (0xf0ff & nv_encoder->dcb->hashm) | 533 (0x0100 << nv_crtc->index), 534 }; 535 536 nvif_mthd(&disp->disp->object, 0, &args, sizeof(args)); 537 } 538 539 static void 540 nv50_hdmi_enable(struct drm_encoder *encoder, struct drm_display_mode *mode) 541 { 542 struct nouveau_drm *drm = nouveau_drm(encoder->dev); 543 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 544 struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc); 545 struct nv50_disp *disp = nv50_disp(encoder->dev); 546 struct { 547 struct nv50_disp_mthd_v1 base; 548 struct nv50_disp_sor_hdmi_pwr_v0 pwr; 549 u8 infoframes[2 * 17]; /* two frames, up to 17 bytes each */ 550 } args = { 551 .base.version = 1, 552 .base.method = NV50_DISP_MTHD_V1_SOR_HDMI_PWR, 553 .base.hasht = nv_encoder->dcb->hasht, 554 .base.hashm = (0xf0ff & nv_encoder->dcb->hashm) | 555 (0x0100 << nv_crtc->index), 556 .pwr.state = 1, 557 .pwr.rekey = 56, /* binary driver, and tegra, constant */ 558 }; 559 struct nouveau_connector *nv_connector; 560 struct drm_hdmi_info *hdmi; 561 u32 max_ac_packet; 562 union hdmi_infoframe avi_frame; 563 union hdmi_infoframe vendor_frame; 564 bool scdc_supported, high_tmds_clock_ratio = false, scrambling = false; 565 u8 config; 566 int ret; 567 int size; 568 569 nv_connector = nouveau_encoder_connector_get(nv_encoder); 570 if (!drm_detect_hdmi_monitor(nv_connector->edid)) 571 return; 572 573 hdmi = &nv_connector->base.display_info.hdmi; 574 scdc_supported = hdmi->scdc.supported; 575 576 ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame.avi, mode, 577 scdc_supported); 578 if (!ret) { 579 /* We have an AVI InfoFrame, populate it to the display */ 580 args.pwr.avi_infoframe_length 581 = hdmi_infoframe_pack(&avi_frame, args.infoframes, 17); 582 } 583 584 ret = drm_hdmi_vendor_infoframe_from_display_mode(&vendor_frame.vendor.hdmi, 585 &nv_connector->base, mode); 586 if (!ret) { 587 /* We have a Vendor InfoFrame, populate it to the display */ 588 args.pwr.vendor_infoframe_length 589 = hdmi_infoframe_pack(&vendor_frame, 590 args.infoframes 591 + args.pwr.avi_infoframe_length, 592 17); 593 } 594 595 max_ac_packet = mode->htotal - mode->hdisplay; 596 max_ac_packet -= args.pwr.rekey; 597 max_ac_packet -= 18; /* constant from tegra */ 598 args.pwr.max_ac_packet = max_ac_packet / 32; 599 600 if (hdmi->scdc.scrambling.supported) { 601 high_tmds_clock_ratio = mode->clock > 340000; 602 scrambling = high_tmds_clock_ratio || 603 hdmi->scdc.scrambling.low_rates; 604 } 605 606 args.pwr.scdc = 607 NV50_DISP_SOR_HDMI_PWR_V0_SCDC_SCRAMBLE * scrambling | 608 NV50_DISP_SOR_HDMI_PWR_V0_SCDC_DIV_BY_4 * high_tmds_clock_ratio; 609 610 size = sizeof(args.base) 611 + sizeof(args.pwr) 612 + args.pwr.avi_infoframe_length 613 + args.pwr.vendor_infoframe_length; 614 nvif_mthd(&disp->disp->object, 0, &args, size); 615 616 nv50_audio_enable(encoder, mode); 617 618 /* If SCDC is supported by the downstream monitor, update 619 * divider / scrambling settings to what we programmed above. 620 */ 621 if (!hdmi->scdc.scrambling.supported) 622 return; 623 624 ret = drm_scdc_readb(nv_encoder->i2c, SCDC_TMDS_CONFIG, &config); 625 if (ret < 0) { 626 NV_ERROR(drm, "Failure to read SCDC_TMDS_CONFIG: %d\n", ret); 627 return; 628 } 629 config &= ~(SCDC_TMDS_BIT_CLOCK_RATIO_BY_40 | SCDC_SCRAMBLING_ENABLE); 630 config |= SCDC_TMDS_BIT_CLOCK_RATIO_BY_40 * high_tmds_clock_ratio; 631 config |= SCDC_SCRAMBLING_ENABLE * scrambling; 632 ret = drm_scdc_writeb(nv_encoder->i2c, SCDC_TMDS_CONFIG, config); 633 if (ret < 0) 634 NV_ERROR(drm, "Failure to write SCDC_TMDS_CONFIG = 0x%02x: %d\n", 635 config, ret); 636 } 637 638 /****************************************************************************** 639 * MST 640 *****************************************************************************/ 641 #define nv50_mstm(p) container_of((p), struct nv50_mstm, mgr) 642 #define nv50_mstc(p) container_of((p), struct nv50_mstc, connector) 643 #define nv50_msto(p) container_of((p), struct nv50_msto, encoder) 644 645 struct nv50_mstm { 646 struct nouveau_encoder *outp; 647 648 struct drm_dp_mst_topology_mgr mgr; 649 struct nv50_msto *msto[4]; 650 651 bool modified; 652 bool disabled; 653 int links; 654 }; 655 656 struct nv50_mstc { 657 struct nv50_mstm *mstm; 658 struct drm_dp_mst_port *port; 659 struct drm_connector connector; 660 661 struct drm_display_mode *native; 662 struct edid *edid; 663 664 int pbn; 665 }; 666 667 struct nv50_msto { 668 struct drm_encoder encoder; 669 670 struct nv50_head *head; 671 struct nv50_mstc *mstc; 672 bool disabled; 673 }; 674 675 static struct drm_dp_payload * 676 nv50_msto_payload(struct nv50_msto *msto) 677 { 678 struct nouveau_drm *drm = nouveau_drm(msto->encoder.dev); 679 struct nv50_mstc *mstc = msto->mstc; 680 struct nv50_mstm *mstm = mstc->mstm; 681 int vcpi = mstc->port->vcpi.vcpi, i; 682 683 NV_ATOMIC(drm, "%s: vcpi %d\n", msto->encoder.name, vcpi); 684 for (i = 0; i < mstm->mgr.max_payloads; i++) { 685 struct drm_dp_payload *payload = &mstm->mgr.payloads[i]; 686 NV_ATOMIC(drm, "%s: %d: vcpi %d start 0x%02x slots 0x%02x\n", 687 mstm->outp->base.base.name, i, payload->vcpi, 688 payload->start_slot, payload->num_slots); 689 } 690 691 for (i = 0; i < mstm->mgr.max_payloads; i++) { 692 struct drm_dp_payload *payload = &mstm->mgr.payloads[i]; 693 if (payload->vcpi == vcpi) 694 return payload; 695 } 696 697 return NULL; 698 } 699 700 static void 701 nv50_msto_cleanup(struct nv50_msto *msto) 702 { 703 struct nouveau_drm *drm = nouveau_drm(msto->encoder.dev); 704 struct nv50_mstc *mstc = msto->mstc; 705 struct nv50_mstm *mstm = mstc->mstm; 706 707 NV_ATOMIC(drm, "%s: msto cleanup\n", msto->encoder.name); 708 if (mstc->port && mstc->port->vcpi.vcpi > 0 && !nv50_msto_payload(msto)) 709 drm_dp_mst_deallocate_vcpi(&mstm->mgr, mstc->port); 710 if (msto->disabled) { 711 msto->mstc = NULL; 712 msto->head = NULL; 713 msto->disabled = false; 714 } 715 } 716 717 static void 718 nv50_msto_prepare(struct nv50_msto *msto) 719 { 720 struct nouveau_drm *drm = nouveau_drm(msto->encoder.dev); 721 struct nv50_mstc *mstc = msto->mstc; 722 struct nv50_mstm *mstm = mstc->mstm; 723 struct { 724 struct nv50_disp_mthd_v1 base; 725 struct nv50_disp_sor_dp_mst_vcpi_v0 vcpi; 726 } args = { 727 .base.version = 1, 728 .base.method = NV50_DISP_MTHD_V1_SOR_DP_MST_VCPI, 729 .base.hasht = mstm->outp->dcb->hasht, 730 .base.hashm = (0xf0ff & mstm->outp->dcb->hashm) | 731 (0x0100 << msto->head->base.index), 732 }; 733 734 NV_ATOMIC(drm, "%s: msto prepare\n", msto->encoder.name); 735 if (mstc->port && mstc->port->vcpi.vcpi > 0) { 736 struct drm_dp_payload *payload = nv50_msto_payload(msto); 737 if (payload) { 738 args.vcpi.start_slot = payload->start_slot; 739 args.vcpi.num_slots = payload->num_slots; 740 args.vcpi.pbn = mstc->port->vcpi.pbn; 741 args.vcpi.aligned_pbn = mstc->port->vcpi.aligned_pbn; 742 } 743 } 744 745 NV_ATOMIC(drm, "%s: %s: %02x %02x %04x %04x\n", 746 msto->encoder.name, msto->head->base.base.name, 747 args.vcpi.start_slot, args.vcpi.num_slots, 748 args.vcpi.pbn, args.vcpi.aligned_pbn); 749 nvif_mthd(&drm->display->disp.object, 0, &args, sizeof(args)); 750 } 751 752 static int 753 nv50_msto_atomic_check(struct drm_encoder *encoder, 754 struct drm_crtc_state *crtc_state, 755 struct drm_connector_state *conn_state) 756 { 757 struct nv50_mstc *mstc = nv50_mstc(conn_state->connector); 758 struct nv50_mstm *mstm = mstc->mstm; 759 int bpp = conn_state->connector->display_info.bpc * 3; 760 int slots; 761 762 mstc->pbn = drm_dp_calc_pbn_mode(crtc_state->adjusted_mode.clock, bpp); 763 764 slots = drm_dp_find_vcpi_slots(&mstm->mgr, mstc->pbn); 765 if (slots < 0) 766 return slots; 767 768 return nv50_outp_atomic_check_view(encoder, crtc_state, conn_state, 769 mstc->native); 770 } 771 772 static void 773 nv50_msto_enable(struct drm_encoder *encoder) 774 { 775 struct nv50_head *head = nv50_head(encoder->crtc); 776 struct nv50_msto *msto = nv50_msto(encoder); 777 struct nv50_mstc *mstc = NULL; 778 struct nv50_mstm *mstm = NULL; 779 struct drm_connector *connector; 780 struct drm_connector_list_iter conn_iter; 781 u8 proto, depth; 782 int slots; 783 bool r; 784 785 drm_connector_list_iter_begin(encoder->dev, &conn_iter); 786 drm_for_each_connector_iter(connector, &conn_iter) { 787 if (connector->state->best_encoder == &msto->encoder) { 788 mstc = nv50_mstc(connector); 789 mstm = mstc->mstm; 790 break; 791 } 792 } 793 drm_connector_list_iter_end(&conn_iter); 794 795 if (WARN_ON(!mstc)) 796 return; 797 798 slots = drm_dp_find_vcpi_slots(&mstm->mgr, mstc->pbn); 799 r = drm_dp_mst_allocate_vcpi(&mstm->mgr, mstc->port, mstc->pbn, slots); 800 WARN_ON(!r); 801 802 if (!mstm->links++) 803 nv50_outp_acquire(mstm->outp); 804 805 if (mstm->outp->link & 1) 806 proto = 0x8; 807 else 808 proto = 0x9; 809 810 switch (mstc->connector.display_info.bpc) { 811 case 6: depth = 0x2; break; 812 case 8: depth = 0x5; break; 813 case 10: 814 default: depth = 0x6; break; 815 } 816 817 mstm->outp->update(mstm->outp, head->base.index, 818 nv50_head_atom(head->base.base.state), proto, depth); 819 820 msto->head = head; 821 msto->mstc = mstc; 822 mstm->modified = true; 823 } 824 825 static void 826 nv50_msto_disable(struct drm_encoder *encoder) 827 { 828 struct nv50_msto *msto = nv50_msto(encoder); 829 struct nv50_mstc *mstc = msto->mstc; 830 struct nv50_mstm *mstm = mstc->mstm; 831 832 if (mstc->port) 833 drm_dp_mst_reset_vcpi_slots(&mstm->mgr, mstc->port); 834 835 mstm->outp->update(mstm->outp, msto->head->base.index, NULL, 0, 0); 836 mstm->modified = true; 837 if (!--mstm->links) 838 mstm->disabled = true; 839 msto->disabled = true; 840 } 841 842 static const struct drm_encoder_helper_funcs 843 nv50_msto_help = { 844 .disable = nv50_msto_disable, 845 .enable = nv50_msto_enable, 846 .atomic_check = nv50_msto_atomic_check, 847 }; 848 849 static void 850 nv50_msto_destroy(struct drm_encoder *encoder) 851 { 852 struct nv50_msto *msto = nv50_msto(encoder); 853 drm_encoder_cleanup(&msto->encoder); 854 kfree(msto); 855 } 856 857 static const struct drm_encoder_funcs 858 nv50_msto = { 859 .destroy = nv50_msto_destroy, 860 }; 861 862 static int 863 nv50_msto_new(struct drm_device *dev, u32 heads, const char *name, int id, 864 struct nv50_msto **pmsto) 865 { 866 struct nv50_msto *msto; 867 int ret; 868 869 if (!(msto = *pmsto = kzalloc(sizeof(*msto), GFP_KERNEL))) 870 return -ENOMEM; 871 872 ret = drm_encoder_init(dev, &msto->encoder, &nv50_msto, 873 DRM_MODE_ENCODER_DPMST, "%s-mst-%d", name, id); 874 if (ret) { 875 kfree(*pmsto); 876 *pmsto = NULL; 877 return ret; 878 } 879 880 drm_encoder_helper_add(&msto->encoder, &nv50_msto_help); 881 msto->encoder.possible_crtcs = heads; 882 return 0; 883 } 884 885 static struct drm_encoder * 886 nv50_mstc_atomic_best_encoder(struct drm_connector *connector, 887 struct drm_connector_state *connector_state) 888 { 889 struct nv50_head *head = nv50_head(connector_state->crtc); 890 struct nv50_mstc *mstc = nv50_mstc(connector); 891 892 return &mstc->mstm->msto[head->base.index]->encoder; 893 } 894 895 static struct drm_encoder * 896 nv50_mstc_best_encoder(struct drm_connector *connector) 897 { 898 struct nv50_mstc *mstc = nv50_mstc(connector); 899 900 return &mstc->mstm->msto[0]->encoder; 901 } 902 903 static enum drm_mode_status 904 nv50_mstc_mode_valid(struct drm_connector *connector, 905 struct drm_display_mode *mode) 906 { 907 return MODE_OK; 908 } 909 910 static int 911 nv50_mstc_get_modes(struct drm_connector *connector) 912 { 913 struct nv50_mstc *mstc = nv50_mstc(connector); 914 int ret = 0; 915 916 mstc->edid = drm_dp_mst_get_edid(&mstc->connector, mstc->port->mgr, mstc->port); 917 drm_connector_update_edid_property(&mstc->connector, mstc->edid); 918 if (mstc->edid) 919 ret = drm_add_edid_modes(&mstc->connector, mstc->edid); 920 921 if (!mstc->connector.display_info.bpc) 922 mstc->connector.display_info.bpc = 8; 923 924 if (mstc->native) 925 drm_mode_destroy(mstc->connector.dev, mstc->native); 926 mstc->native = nouveau_conn_native_mode(&mstc->connector); 927 return ret; 928 } 929 930 static const struct drm_connector_helper_funcs 931 nv50_mstc_help = { 932 .get_modes = nv50_mstc_get_modes, 933 .mode_valid = nv50_mstc_mode_valid, 934 .best_encoder = nv50_mstc_best_encoder, 935 .atomic_best_encoder = nv50_mstc_atomic_best_encoder, 936 }; 937 938 static enum drm_connector_status 939 nv50_mstc_detect(struct drm_connector *connector, bool force) 940 { 941 struct nv50_mstc *mstc = nv50_mstc(connector); 942 enum drm_connector_status conn_status; 943 int ret; 944 945 if (!mstc->port) 946 return connector_status_disconnected; 947 948 ret = pm_runtime_get_sync(connector->dev->dev); 949 if (ret < 0 && ret != -EACCES) 950 return connector_status_disconnected; 951 952 conn_status = drm_dp_mst_detect_port(connector, mstc->port->mgr, 953 mstc->port); 954 955 pm_runtime_mark_last_busy(connector->dev->dev); 956 pm_runtime_put_autosuspend(connector->dev->dev); 957 return conn_status; 958 } 959 960 static void 961 nv50_mstc_destroy(struct drm_connector *connector) 962 { 963 struct nv50_mstc *mstc = nv50_mstc(connector); 964 drm_connector_cleanup(&mstc->connector); 965 kfree(mstc); 966 } 967 968 static const struct drm_connector_funcs 969 nv50_mstc = { 970 .reset = nouveau_conn_reset, 971 .detect = nv50_mstc_detect, 972 .fill_modes = drm_helper_probe_single_connector_modes, 973 .destroy = nv50_mstc_destroy, 974 .atomic_duplicate_state = nouveau_conn_atomic_duplicate_state, 975 .atomic_destroy_state = nouveau_conn_atomic_destroy_state, 976 .atomic_set_property = nouveau_conn_atomic_set_property, 977 .atomic_get_property = nouveau_conn_atomic_get_property, 978 }; 979 980 static int 981 nv50_mstc_new(struct nv50_mstm *mstm, struct drm_dp_mst_port *port, 982 const char *path, struct nv50_mstc **pmstc) 983 { 984 struct drm_device *dev = mstm->outp->base.base.dev; 985 struct nv50_mstc *mstc; 986 int ret, i; 987 988 if (!(mstc = *pmstc = kzalloc(sizeof(*mstc), GFP_KERNEL))) 989 return -ENOMEM; 990 mstc->mstm = mstm; 991 mstc->port = port; 992 993 ret = drm_connector_init(dev, &mstc->connector, &nv50_mstc, 994 DRM_MODE_CONNECTOR_DisplayPort); 995 if (ret) { 996 kfree(*pmstc); 997 *pmstc = NULL; 998 return ret; 999 } 1000 1001 drm_connector_helper_add(&mstc->connector, &nv50_mstc_help); 1002 1003 mstc->connector.funcs->reset(&mstc->connector); 1004 nouveau_conn_attach_properties(&mstc->connector); 1005 1006 for (i = 0; i < ARRAY_SIZE(mstm->msto) && mstm->msto[i]; i++) 1007 drm_connector_attach_encoder(&mstc->connector, &mstm->msto[i]->encoder); 1008 1009 drm_object_attach_property(&mstc->connector.base, dev->mode_config.path_property, 0); 1010 drm_object_attach_property(&mstc->connector.base, dev->mode_config.tile_property, 0); 1011 drm_connector_set_path_property(&mstc->connector, path); 1012 return 0; 1013 } 1014 1015 static void 1016 nv50_mstm_cleanup(struct nv50_mstm *mstm) 1017 { 1018 struct nouveau_drm *drm = nouveau_drm(mstm->outp->base.base.dev); 1019 struct drm_encoder *encoder; 1020 int ret; 1021 1022 NV_ATOMIC(drm, "%s: mstm cleanup\n", mstm->outp->base.base.name); 1023 ret = drm_dp_check_act_status(&mstm->mgr); 1024 1025 ret = drm_dp_update_payload_part2(&mstm->mgr); 1026 1027 drm_for_each_encoder(encoder, mstm->outp->base.base.dev) { 1028 if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) { 1029 struct nv50_msto *msto = nv50_msto(encoder); 1030 struct nv50_mstc *mstc = msto->mstc; 1031 if (mstc && mstc->mstm == mstm) 1032 nv50_msto_cleanup(msto); 1033 } 1034 } 1035 1036 mstm->modified = false; 1037 } 1038 1039 static void 1040 nv50_mstm_prepare(struct nv50_mstm *mstm) 1041 { 1042 struct nouveau_drm *drm = nouveau_drm(mstm->outp->base.base.dev); 1043 struct drm_encoder *encoder; 1044 int ret; 1045 1046 NV_ATOMIC(drm, "%s: mstm prepare\n", mstm->outp->base.base.name); 1047 ret = drm_dp_update_payload_part1(&mstm->mgr); 1048 1049 drm_for_each_encoder(encoder, mstm->outp->base.base.dev) { 1050 if (encoder->encoder_type == DRM_MODE_ENCODER_DPMST) { 1051 struct nv50_msto *msto = nv50_msto(encoder); 1052 struct nv50_mstc *mstc = msto->mstc; 1053 if (mstc && mstc->mstm == mstm) 1054 nv50_msto_prepare(msto); 1055 } 1056 } 1057 1058 if (mstm->disabled) { 1059 if (!mstm->links) 1060 nv50_outp_release(mstm->outp); 1061 mstm->disabled = false; 1062 } 1063 } 1064 1065 static void 1066 nv50_mstm_hotplug(struct drm_dp_mst_topology_mgr *mgr) 1067 { 1068 struct nv50_mstm *mstm = nv50_mstm(mgr); 1069 drm_kms_helper_hotplug_event(mstm->outp->base.base.dev); 1070 } 1071 1072 static void 1073 nv50_mstm_destroy_connector(struct drm_dp_mst_topology_mgr *mgr, 1074 struct drm_connector *connector) 1075 { 1076 struct nouveau_drm *drm = nouveau_drm(connector->dev); 1077 struct nv50_mstc *mstc = nv50_mstc(connector); 1078 1079 drm_connector_unregister(&mstc->connector); 1080 1081 drm_fb_helper_remove_one_connector(&drm->fbcon->helper, &mstc->connector); 1082 1083 drm_modeset_lock(&drm->dev->mode_config.connection_mutex, NULL); 1084 mstc->port = NULL; 1085 drm_modeset_unlock(&drm->dev->mode_config.connection_mutex); 1086 1087 drm_connector_put(&mstc->connector); 1088 } 1089 1090 static void 1091 nv50_mstm_register_connector(struct drm_connector *connector) 1092 { 1093 struct nouveau_drm *drm = nouveau_drm(connector->dev); 1094 1095 drm_fb_helper_add_one_connector(&drm->fbcon->helper, connector); 1096 1097 drm_connector_register(connector); 1098 } 1099 1100 static struct drm_connector * 1101 nv50_mstm_add_connector(struct drm_dp_mst_topology_mgr *mgr, 1102 struct drm_dp_mst_port *port, const char *path) 1103 { 1104 struct nv50_mstm *mstm = nv50_mstm(mgr); 1105 struct nv50_mstc *mstc; 1106 int ret; 1107 1108 ret = nv50_mstc_new(mstm, port, path, &mstc); 1109 if (ret) { 1110 if (mstc) 1111 mstc->connector.funcs->destroy(&mstc->connector); 1112 return NULL; 1113 } 1114 1115 return &mstc->connector; 1116 } 1117 1118 static const struct drm_dp_mst_topology_cbs 1119 nv50_mstm = { 1120 .add_connector = nv50_mstm_add_connector, 1121 .register_connector = nv50_mstm_register_connector, 1122 .destroy_connector = nv50_mstm_destroy_connector, 1123 .hotplug = nv50_mstm_hotplug, 1124 }; 1125 1126 void 1127 nv50_mstm_service(struct nv50_mstm *mstm) 1128 { 1129 struct drm_dp_aux *aux = mstm ? mstm->mgr.aux : NULL; 1130 bool handled = true; 1131 int ret; 1132 u8 esi[8] = {}; 1133 1134 if (!aux) 1135 return; 1136 1137 while (handled) { 1138 ret = drm_dp_dpcd_read(aux, DP_SINK_COUNT_ESI, esi, 8); 1139 if (ret != 8) { 1140 drm_dp_mst_topology_mgr_set_mst(&mstm->mgr, false); 1141 return; 1142 } 1143 1144 drm_dp_mst_hpd_irq(&mstm->mgr, esi, &handled); 1145 if (!handled) 1146 break; 1147 1148 drm_dp_dpcd_write(aux, DP_SINK_COUNT_ESI + 1, &esi[1], 3); 1149 } 1150 } 1151 1152 void 1153 nv50_mstm_remove(struct nv50_mstm *mstm) 1154 { 1155 if (mstm) 1156 drm_dp_mst_topology_mgr_set_mst(&mstm->mgr, false); 1157 } 1158 1159 static int 1160 nv50_mstm_enable(struct nv50_mstm *mstm, u8 dpcd, int state) 1161 { 1162 struct nouveau_encoder *outp = mstm->outp; 1163 struct { 1164 struct nv50_disp_mthd_v1 base; 1165 struct nv50_disp_sor_dp_mst_link_v0 mst; 1166 } args = { 1167 .base.version = 1, 1168 .base.method = NV50_DISP_MTHD_V1_SOR_DP_MST_LINK, 1169 .base.hasht = outp->dcb->hasht, 1170 .base.hashm = outp->dcb->hashm, 1171 .mst.state = state, 1172 }; 1173 struct nouveau_drm *drm = nouveau_drm(outp->base.base.dev); 1174 struct nvif_object *disp = &drm->display->disp.object; 1175 int ret; 1176 1177 if (dpcd >= 0x12) { 1178 /* Even if we're enabling MST, start with disabling the 1179 * branching unit to clear any sink-side MST topology state 1180 * that wasn't set by us 1181 */ 1182 ret = drm_dp_dpcd_writeb(mstm->mgr.aux, DP_MSTM_CTRL, 0); 1183 if (ret < 0) 1184 return ret; 1185 1186 if (state) { 1187 /* Now, start initializing */ 1188 ret = drm_dp_dpcd_writeb(mstm->mgr.aux, DP_MSTM_CTRL, 1189 DP_MST_EN); 1190 if (ret < 0) 1191 return ret; 1192 } 1193 } 1194 1195 return nvif_mthd(disp, 0, &args, sizeof(args)); 1196 } 1197 1198 int 1199 nv50_mstm_detect(struct nv50_mstm *mstm, u8 dpcd[8], int allow) 1200 { 1201 struct drm_dp_aux *aux; 1202 int ret; 1203 bool old_state, new_state; 1204 u8 mstm_ctrl; 1205 1206 if (!mstm) 1207 return 0; 1208 1209 mutex_lock(&mstm->mgr.lock); 1210 1211 old_state = mstm->mgr.mst_state; 1212 new_state = old_state; 1213 aux = mstm->mgr.aux; 1214 1215 if (old_state) { 1216 /* Just check that the MST hub is still as we expect it */ 1217 ret = drm_dp_dpcd_readb(aux, DP_MSTM_CTRL, &mstm_ctrl); 1218 if (ret < 0 || !(mstm_ctrl & DP_MST_EN)) { 1219 DRM_DEBUG_KMS("Hub gone, disabling MST topology\n"); 1220 new_state = false; 1221 } 1222 } else if (dpcd[0] >= 0x12) { 1223 ret = drm_dp_dpcd_readb(aux, DP_MSTM_CAP, &dpcd[1]); 1224 if (ret < 0) 1225 goto probe_error; 1226 1227 if (!(dpcd[1] & DP_MST_CAP)) 1228 dpcd[0] = 0x11; 1229 else 1230 new_state = allow; 1231 } 1232 1233 if (new_state == old_state) { 1234 mutex_unlock(&mstm->mgr.lock); 1235 return new_state; 1236 } 1237 1238 ret = nv50_mstm_enable(mstm, dpcd[0], new_state); 1239 if (ret) 1240 goto probe_error; 1241 1242 mutex_unlock(&mstm->mgr.lock); 1243 1244 ret = drm_dp_mst_topology_mgr_set_mst(&mstm->mgr, new_state); 1245 if (ret) 1246 return nv50_mstm_enable(mstm, dpcd[0], 0); 1247 1248 return new_state; 1249 1250 probe_error: 1251 mutex_unlock(&mstm->mgr.lock); 1252 return ret; 1253 } 1254 1255 static void 1256 nv50_mstm_fini(struct nv50_mstm *mstm) 1257 { 1258 if (mstm && mstm->mgr.mst_state) 1259 drm_dp_mst_topology_mgr_suspend(&mstm->mgr); 1260 } 1261 1262 static void 1263 nv50_mstm_init(struct nv50_mstm *mstm) 1264 { 1265 int ret; 1266 1267 if (!mstm || !mstm->mgr.mst_state) 1268 return; 1269 1270 ret = drm_dp_mst_topology_mgr_resume(&mstm->mgr); 1271 if (ret == -1) { 1272 drm_dp_mst_topology_mgr_set_mst(&mstm->mgr, false); 1273 drm_kms_helper_hotplug_event(mstm->mgr.dev); 1274 } 1275 } 1276 1277 static void 1278 nv50_mstm_del(struct nv50_mstm **pmstm) 1279 { 1280 struct nv50_mstm *mstm = *pmstm; 1281 if (mstm) { 1282 drm_dp_mst_topology_mgr_destroy(&mstm->mgr); 1283 kfree(*pmstm); 1284 *pmstm = NULL; 1285 } 1286 } 1287 1288 static int 1289 nv50_mstm_new(struct nouveau_encoder *outp, struct drm_dp_aux *aux, int aux_max, 1290 int conn_base_id, struct nv50_mstm **pmstm) 1291 { 1292 const int max_payloads = hweight8(outp->dcb->heads); 1293 struct drm_device *dev = outp->base.base.dev; 1294 struct nv50_mstm *mstm; 1295 int ret, i; 1296 u8 dpcd; 1297 1298 /* This is a workaround for some monitors not functioning 1299 * correctly in MST mode on initial module load. I think 1300 * some bad interaction with the VBIOS may be responsible. 1301 * 1302 * A good ol' off and on again seems to work here ;) 1303 */ 1304 ret = drm_dp_dpcd_readb(aux, DP_DPCD_REV, &dpcd); 1305 if (ret >= 0 && dpcd >= 0x12) 1306 drm_dp_dpcd_writeb(aux, DP_MSTM_CTRL, 0); 1307 1308 if (!(mstm = *pmstm = kzalloc(sizeof(*mstm), GFP_KERNEL))) 1309 return -ENOMEM; 1310 mstm->outp = outp; 1311 mstm->mgr.cbs = &nv50_mstm; 1312 1313 ret = drm_dp_mst_topology_mgr_init(&mstm->mgr, dev, aux, aux_max, 1314 max_payloads, conn_base_id); 1315 if (ret) 1316 return ret; 1317 1318 for (i = 0; i < max_payloads; i++) { 1319 ret = nv50_msto_new(dev, outp->dcb->heads, outp->base.base.name, 1320 i, &mstm->msto[i]); 1321 if (ret) 1322 return ret; 1323 } 1324 1325 return 0; 1326 } 1327 1328 /****************************************************************************** 1329 * SOR 1330 *****************************************************************************/ 1331 static void 1332 nv50_sor_update(struct nouveau_encoder *nv_encoder, u8 head, 1333 struct nv50_head_atom *asyh, u8 proto, u8 depth) 1334 { 1335 struct nv50_disp *disp = nv50_disp(nv_encoder->base.base.dev); 1336 struct nv50_core *core = disp->core; 1337 1338 if (!asyh) { 1339 nv_encoder->ctrl &= ~BIT(head); 1340 if (!(nv_encoder->ctrl & 0x0000000f)) 1341 nv_encoder->ctrl = 0; 1342 } else { 1343 nv_encoder->ctrl |= proto << 8; 1344 nv_encoder->ctrl |= BIT(head); 1345 asyh->or.depth = depth; 1346 } 1347 1348 core->func->sor->ctrl(core, nv_encoder->or, nv_encoder->ctrl, asyh); 1349 } 1350 1351 static void 1352 nv50_sor_disable(struct drm_encoder *encoder) 1353 { 1354 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 1355 struct nouveau_crtc *nv_crtc = nouveau_crtc(nv_encoder->crtc); 1356 1357 nv_encoder->crtc = NULL; 1358 1359 if (nv_crtc) { 1360 struct nvkm_i2c_aux *aux = nv_encoder->aux; 1361 u8 pwr; 1362 1363 if (aux) { 1364 int ret = nvkm_rdaux(aux, DP_SET_POWER, &pwr, 1); 1365 if (ret == 0) { 1366 pwr &= ~DP_SET_POWER_MASK; 1367 pwr |= DP_SET_POWER_D3; 1368 nvkm_wraux(aux, DP_SET_POWER, &pwr, 1); 1369 } 1370 } 1371 1372 nv_encoder->update(nv_encoder, nv_crtc->index, NULL, 0, 0); 1373 nv50_audio_disable(encoder, nv_crtc); 1374 nv50_hdmi_disable(&nv_encoder->base.base, nv_crtc); 1375 nv50_outp_release(nv_encoder); 1376 } 1377 } 1378 1379 static void 1380 nv50_sor_enable(struct drm_encoder *encoder) 1381 { 1382 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 1383 struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc); 1384 struct nv50_head_atom *asyh = nv50_head_atom(nv_crtc->base.state); 1385 struct drm_display_mode *mode = &asyh->state.adjusted_mode; 1386 struct { 1387 struct nv50_disp_mthd_v1 base; 1388 struct nv50_disp_sor_lvds_script_v0 lvds; 1389 } lvds = { 1390 .base.version = 1, 1391 .base.method = NV50_DISP_MTHD_V1_SOR_LVDS_SCRIPT, 1392 .base.hasht = nv_encoder->dcb->hasht, 1393 .base.hashm = nv_encoder->dcb->hashm, 1394 }; 1395 struct nv50_disp *disp = nv50_disp(encoder->dev); 1396 struct drm_device *dev = encoder->dev; 1397 struct nouveau_drm *drm = nouveau_drm(dev); 1398 struct nouveau_connector *nv_connector; 1399 struct nvbios *bios = &drm->vbios; 1400 u8 proto = 0xf; 1401 u8 depth = 0x0; 1402 1403 nv_connector = nouveau_encoder_connector_get(nv_encoder); 1404 nv_encoder->crtc = encoder->crtc; 1405 nv50_outp_acquire(nv_encoder); 1406 1407 switch (nv_encoder->dcb->type) { 1408 case DCB_OUTPUT_TMDS: 1409 if (nv_encoder->link & 1) { 1410 proto = 0x1; 1411 /* Only enable dual-link if: 1412 * - Need to (i.e. rate > 165MHz) 1413 * - DCB says we can 1414 * - Not an HDMI monitor, since there's no dual-link 1415 * on HDMI. 1416 */ 1417 if (mode->clock >= 165000 && 1418 nv_encoder->dcb->duallink_possible && 1419 !drm_detect_hdmi_monitor(nv_connector->edid)) 1420 proto |= 0x4; 1421 } else { 1422 proto = 0x2; 1423 } 1424 1425 nv50_hdmi_enable(&nv_encoder->base.base, mode); 1426 break; 1427 case DCB_OUTPUT_LVDS: 1428 proto = 0x0; 1429 1430 if (bios->fp_no_ddc) { 1431 if (bios->fp.dual_link) 1432 lvds.lvds.script |= 0x0100; 1433 if (bios->fp.if_is_24bit) 1434 lvds.lvds.script |= 0x0200; 1435 } else { 1436 if (nv_connector->type == DCB_CONNECTOR_LVDS_SPWG) { 1437 if (((u8 *)nv_connector->edid)[121] == 2) 1438 lvds.lvds.script |= 0x0100; 1439 } else 1440 if (mode->clock >= bios->fp.duallink_transition_clk) { 1441 lvds.lvds.script |= 0x0100; 1442 } 1443 1444 if (lvds.lvds.script & 0x0100) { 1445 if (bios->fp.strapless_is_24bit & 2) 1446 lvds.lvds.script |= 0x0200; 1447 } else { 1448 if (bios->fp.strapless_is_24bit & 1) 1449 lvds.lvds.script |= 0x0200; 1450 } 1451 1452 if (nv_connector->base.display_info.bpc == 8) 1453 lvds.lvds.script |= 0x0200; 1454 } 1455 1456 nvif_mthd(&disp->disp->object, 0, &lvds, sizeof(lvds)); 1457 break; 1458 case DCB_OUTPUT_DP: 1459 if (nv_connector->base.display_info.bpc == 6) 1460 depth = 0x2; 1461 else 1462 if (nv_connector->base.display_info.bpc == 8) 1463 depth = 0x5; 1464 else 1465 depth = 0x6; 1466 1467 if (nv_encoder->link & 1) 1468 proto = 0x8; 1469 else 1470 proto = 0x9; 1471 1472 nv50_audio_enable(encoder, mode); 1473 break; 1474 default: 1475 BUG(); 1476 break; 1477 } 1478 1479 nv_encoder->update(nv_encoder, nv_crtc->index, asyh, proto, depth); 1480 } 1481 1482 static const struct drm_encoder_helper_funcs 1483 nv50_sor_help = { 1484 .atomic_check = nv50_outp_atomic_check, 1485 .enable = nv50_sor_enable, 1486 .disable = nv50_sor_disable, 1487 }; 1488 1489 static void 1490 nv50_sor_destroy(struct drm_encoder *encoder) 1491 { 1492 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 1493 nv50_mstm_del(&nv_encoder->dp.mstm); 1494 drm_encoder_cleanup(encoder); 1495 kfree(encoder); 1496 } 1497 1498 static const struct drm_encoder_funcs 1499 nv50_sor_func = { 1500 .destroy = nv50_sor_destroy, 1501 }; 1502 1503 static int 1504 nv50_sor_create(struct drm_connector *connector, struct dcb_output *dcbe) 1505 { 1506 struct nouveau_connector *nv_connector = nouveau_connector(connector); 1507 struct nouveau_drm *drm = nouveau_drm(connector->dev); 1508 struct nvkm_bios *bios = nvxx_bios(&drm->client.device); 1509 struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device); 1510 struct nouveau_encoder *nv_encoder; 1511 struct drm_encoder *encoder; 1512 u8 ver, hdr, cnt, len; 1513 u32 data; 1514 int type, ret; 1515 1516 switch (dcbe->type) { 1517 case DCB_OUTPUT_LVDS: type = DRM_MODE_ENCODER_LVDS; break; 1518 case DCB_OUTPUT_TMDS: 1519 case DCB_OUTPUT_DP: 1520 default: 1521 type = DRM_MODE_ENCODER_TMDS; 1522 break; 1523 } 1524 1525 nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL); 1526 if (!nv_encoder) 1527 return -ENOMEM; 1528 nv_encoder->dcb = dcbe; 1529 nv_encoder->update = nv50_sor_update; 1530 1531 encoder = to_drm_encoder(nv_encoder); 1532 encoder->possible_crtcs = dcbe->heads; 1533 encoder->possible_clones = 0; 1534 drm_encoder_init(connector->dev, encoder, &nv50_sor_func, type, 1535 "sor-%04x-%04x", dcbe->hasht, dcbe->hashm); 1536 drm_encoder_helper_add(encoder, &nv50_sor_help); 1537 1538 drm_connector_attach_encoder(connector, encoder); 1539 1540 if (dcbe->type == DCB_OUTPUT_DP) { 1541 struct nv50_disp *disp = nv50_disp(encoder->dev); 1542 struct nvkm_i2c_aux *aux = 1543 nvkm_i2c_aux_find(i2c, dcbe->i2c_index); 1544 if (aux) { 1545 if (disp->disp->object.oclass < GF110_DISP) { 1546 /* HW has no support for address-only 1547 * transactions, so we're required to 1548 * use custom I2C-over-AUX code. 1549 */ 1550 nv_encoder->i2c = &aux->i2c; 1551 } else { 1552 nv_encoder->i2c = &nv_connector->aux.ddc; 1553 } 1554 nv_encoder->aux = aux; 1555 } 1556 1557 if ((data = nvbios_dp_table(bios, &ver, &hdr, &cnt, &len)) && 1558 ver >= 0x40 && (nvbios_rd08(bios, data + 0x08) & 0x04)) { 1559 ret = nv50_mstm_new(nv_encoder, &nv_connector->aux, 16, 1560 nv_connector->base.base.id, 1561 &nv_encoder->dp.mstm); 1562 if (ret) 1563 return ret; 1564 } 1565 } else { 1566 struct nvkm_i2c_bus *bus = 1567 nvkm_i2c_bus_find(i2c, dcbe->i2c_index); 1568 if (bus) 1569 nv_encoder->i2c = &bus->i2c; 1570 } 1571 1572 return 0; 1573 } 1574 1575 /****************************************************************************** 1576 * PIOR 1577 *****************************************************************************/ 1578 static int 1579 nv50_pior_atomic_check(struct drm_encoder *encoder, 1580 struct drm_crtc_state *crtc_state, 1581 struct drm_connector_state *conn_state) 1582 { 1583 int ret = nv50_outp_atomic_check(encoder, crtc_state, conn_state); 1584 if (ret) 1585 return ret; 1586 crtc_state->adjusted_mode.clock *= 2; 1587 return 0; 1588 } 1589 1590 static void 1591 nv50_pior_disable(struct drm_encoder *encoder) 1592 { 1593 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 1594 struct nv50_core *core = nv50_disp(encoder->dev)->core; 1595 if (nv_encoder->crtc) 1596 core->func->pior->ctrl(core, nv_encoder->or, 0x00000000, NULL); 1597 nv_encoder->crtc = NULL; 1598 nv50_outp_release(nv_encoder); 1599 } 1600 1601 static void 1602 nv50_pior_enable(struct drm_encoder *encoder) 1603 { 1604 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); 1605 struct nouveau_crtc *nv_crtc = nouveau_crtc(encoder->crtc); 1606 struct nouveau_connector *nv_connector; 1607 struct nv50_head_atom *asyh = nv50_head_atom(nv_crtc->base.state); 1608 struct nv50_core *core = nv50_disp(encoder->dev)->core; 1609 u8 owner = 1 << nv_crtc->index; 1610 u8 proto; 1611 1612 nv50_outp_acquire(nv_encoder); 1613 1614 nv_connector = nouveau_encoder_connector_get(nv_encoder); 1615 switch (nv_connector->base.display_info.bpc) { 1616 case 10: asyh->or.depth = 0x6; break; 1617 case 8: asyh->or.depth = 0x5; break; 1618 case 6: asyh->or.depth = 0x2; break; 1619 default: asyh->or.depth = 0x0; break; 1620 } 1621 1622 switch (nv_encoder->dcb->type) { 1623 case DCB_OUTPUT_TMDS: 1624 case DCB_OUTPUT_DP: 1625 proto = 0x0; 1626 break; 1627 default: 1628 BUG(); 1629 break; 1630 } 1631 1632 core->func->pior->ctrl(core, nv_encoder->or, (proto << 8) | owner, asyh); 1633 nv_encoder->crtc = encoder->crtc; 1634 } 1635 1636 static const struct drm_encoder_helper_funcs 1637 nv50_pior_help = { 1638 .atomic_check = nv50_pior_atomic_check, 1639 .enable = nv50_pior_enable, 1640 .disable = nv50_pior_disable, 1641 }; 1642 1643 static void 1644 nv50_pior_destroy(struct drm_encoder *encoder) 1645 { 1646 drm_encoder_cleanup(encoder); 1647 kfree(encoder); 1648 } 1649 1650 static const struct drm_encoder_funcs 1651 nv50_pior_func = { 1652 .destroy = nv50_pior_destroy, 1653 }; 1654 1655 static int 1656 nv50_pior_create(struct drm_connector *connector, struct dcb_output *dcbe) 1657 { 1658 struct nouveau_drm *drm = nouveau_drm(connector->dev); 1659 struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device); 1660 struct nvkm_i2c_bus *bus = NULL; 1661 struct nvkm_i2c_aux *aux = NULL; 1662 struct i2c_adapter *ddc; 1663 struct nouveau_encoder *nv_encoder; 1664 struct drm_encoder *encoder; 1665 int type; 1666 1667 switch (dcbe->type) { 1668 case DCB_OUTPUT_TMDS: 1669 bus = nvkm_i2c_bus_find(i2c, NVKM_I2C_BUS_EXT(dcbe->extdev)); 1670 ddc = bus ? &bus->i2c : NULL; 1671 type = DRM_MODE_ENCODER_TMDS; 1672 break; 1673 case DCB_OUTPUT_DP: 1674 aux = nvkm_i2c_aux_find(i2c, NVKM_I2C_AUX_EXT(dcbe->extdev)); 1675 ddc = aux ? &aux->i2c : NULL; 1676 type = DRM_MODE_ENCODER_TMDS; 1677 break; 1678 default: 1679 return -ENODEV; 1680 } 1681 1682 nv_encoder = kzalloc(sizeof(*nv_encoder), GFP_KERNEL); 1683 if (!nv_encoder) 1684 return -ENOMEM; 1685 nv_encoder->dcb = dcbe; 1686 nv_encoder->i2c = ddc; 1687 nv_encoder->aux = aux; 1688 1689 encoder = to_drm_encoder(nv_encoder); 1690 encoder->possible_crtcs = dcbe->heads; 1691 encoder->possible_clones = 0; 1692 drm_encoder_init(connector->dev, encoder, &nv50_pior_func, type, 1693 "pior-%04x-%04x", dcbe->hasht, dcbe->hashm); 1694 drm_encoder_helper_add(encoder, &nv50_pior_help); 1695 1696 drm_connector_attach_encoder(connector, encoder); 1697 return 0; 1698 } 1699 1700 /****************************************************************************** 1701 * Atomic 1702 *****************************************************************************/ 1703 1704 static void 1705 nv50_disp_atomic_commit_core(struct drm_atomic_state *state, u32 *interlock) 1706 { 1707 struct nouveau_drm *drm = nouveau_drm(state->dev); 1708 struct nv50_disp *disp = nv50_disp(drm->dev); 1709 struct nv50_core *core = disp->core; 1710 struct nv50_mstm *mstm; 1711 struct drm_encoder *encoder; 1712 1713 NV_ATOMIC(drm, "commit core %08x\n", interlock[NV50_DISP_INTERLOCK_BASE]); 1714 1715 drm_for_each_encoder(encoder, drm->dev) { 1716 if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST) { 1717 mstm = nouveau_encoder(encoder)->dp.mstm; 1718 if (mstm && mstm->modified) 1719 nv50_mstm_prepare(mstm); 1720 } 1721 } 1722 1723 core->func->ntfy_init(disp->sync, NV50_DISP_CORE_NTFY); 1724 core->func->update(core, interlock, true); 1725 if (core->func->ntfy_wait_done(disp->sync, NV50_DISP_CORE_NTFY, 1726 disp->core->chan.base.device)) 1727 NV_ERROR(drm, "core notifier timeout\n"); 1728 1729 drm_for_each_encoder(encoder, drm->dev) { 1730 if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST) { 1731 mstm = nouveau_encoder(encoder)->dp.mstm; 1732 if (mstm && mstm->modified) 1733 nv50_mstm_cleanup(mstm); 1734 } 1735 } 1736 } 1737 1738 static void 1739 nv50_disp_atomic_commit_wndw(struct drm_atomic_state *state, u32 *interlock) 1740 { 1741 struct drm_plane_state *new_plane_state; 1742 struct drm_plane *plane; 1743 int i; 1744 1745 for_each_new_plane_in_state(state, plane, new_plane_state, i) { 1746 struct nv50_wndw *wndw = nv50_wndw(plane); 1747 if (interlock[wndw->interlock.type] & wndw->interlock.data) { 1748 if (wndw->func->update) 1749 wndw->func->update(wndw, interlock); 1750 } 1751 } 1752 } 1753 1754 static void 1755 nv50_disp_atomic_commit_tail(struct drm_atomic_state *state) 1756 { 1757 struct drm_device *dev = state->dev; 1758 struct drm_crtc_state *new_crtc_state, *old_crtc_state; 1759 struct drm_crtc *crtc; 1760 struct drm_plane_state *new_plane_state; 1761 struct drm_plane *plane; 1762 struct nouveau_drm *drm = nouveau_drm(dev); 1763 struct nv50_disp *disp = nv50_disp(dev); 1764 struct nv50_atom *atom = nv50_atom(state); 1765 struct nv50_outp_atom *outp, *outt; 1766 u32 interlock[NV50_DISP_INTERLOCK__SIZE] = {}; 1767 int i; 1768 1769 NV_ATOMIC(drm, "commit %d %d\n", atom->lock_core, atom->flush_disable); 1770 drm_atomic_helper_wait_for_fences(dev, state, false); 1771 drm_atomic_helper_wait_for_dependencies(state); 1772 drm_atomic_helper_update_legacy_modeset_state(dev, state); 1773 1774 if (atom->lock_core) 1775 mutex_lock(&disp->mutex); 1776 1777 /* Disable head(s). */ 1778 for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { 1779 struct nv50_head_atom *asyh = nv50_head_atom(new_crtc_state); 1780 struct nv50_head *head = nv50_head(crtc); 1781 1782 NV_ATOMIC(drm, "%s: clr %04x (set %04x)\n", crtc->name, 1783 asyh->clr.mask, asyh->set.mask); 1784 if (old_crtc_state->active && !new_crtc_state->active) 1785 drm_crtc_vblank_off(crtc); 1786 1787 if (asyh->clr.mask) { 1788 nv50_head_flush_clr(head, asyh, atom->flush_disable); 1789 interlock[NV50_DISP_INTERLOCK_CORE] |= 1; 1790 } 1791 } 1792 1793 /* Disable plane(s). */ 1794 for_each_new_plane_in_state(state, plane, new_plane_state, i) { 1795 struct nv50_wndw_atom *asyw = nv50_wndw_atom(new_plane_state); 1796 struct nv50_wndw *wndw = nv50_wndw(plane); 1797 1798 NV_ATOMIC(drm, "%s: clr %02x (set %02x)\n", plane->name, 1799 asyw->clr.mask, asyw->set.mask); 1800 if (!asyw->clr.mask) 1801 continue; 1802 1803 nv50_wndw_flush_clr(wndw, interlock, atom->flush_disable, asyw); 1804 } 1805 1806 /* Disable output path(s). */ 1807 list_for_each_entry(outp, &atom->outp, head) { 1808 const struct drm_encoder_helper_funcs *help; 1809 struct drm_encoder *encoder; 1810 1811 encoder = outp->encoder; 1812 help = encoder->helper_private; 1813 1814 NV_ATOMIC(drm, "%s: clr %02x (set %02x)\n", encoder->name, 1815 outp->clr.mask, outp->set.mask); 1816 1817 if (outp->clr.mask) { 1818 help->disable(encoder); 1819 interlock[NV50_DISP_INTERLOCK_CORE] |= 1; 1820 if (outp->flush_disable) { 1821 nv50_disp_atomic_commit_wndw(state, interlock); 1822 nv50_disp_atomic_commit_core(state, interlock); 1823 memset(interlock, 0x00, sizeof(interlock)); 1824 } 1825 } 1826 } 1827 1828 /* Flush disable. */ 1829 if (interlock[NV50_DISP_INTERLOCK_CORE]) { 1830 if (atom->flush_disable) { 1831 nv50_disp_atomic_commit_wndw(state, interlock); 1832 nv50_disp_atomic_commit_core(state, interlock); 1833 memset(interlock, 0x00, sizeof(interlock)); 1834 } 1835 } 1836 1837 /* Update output path(s). */ 1838 list_for_each_entry_safe(outp, outt, &atom->outp, head) { 1839 const struct drm_encoder_helper_funcs *help; 1840 struct drm_encoder *encoder; 1841 1842 encoder = outp->encoder; 1843 help = encoder->helper_private; 1844 1845 NV_ATOMIC(drm, "%s: set %02x (clr %02x)\n", encoder->name, 1846 outp->set.mask, outp->clr.mask); 1847 1848 if (outp->set.mask) { 1849 help->enable(encoder); 1850 interlock[NV50_DISP_INTERLOCK_CORE] = 1; 1851 } 1852 1853 list_del(&outp->head); 1854 kfree(outp); 1855 } 1856 1857 /* Update head(s). */ 1858 for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { 1859 struct nv50_head_atom *asyh = nv50_head_atom(new_crtc_state); 1860 struct nv50_head *head = nv50_head(crtc); 1861 1862 NV_ATOMIC(drm, "%s: set %04x (clr %04x)\n", crtc->name, 1863 asyh->set.mask, asyh->clr.mask); 1864 1865 if (asyh->set.mask) { 1866 nv50_head_flush_set(head, asyh); 1867 interlock[NV50_DISP_INTERLOCK_CORE] = 1; 1868 } 1869 1870 if (new_crtc_state->active) { 1871 if (!old_crtc_state->active) 1872 drm_crtc_vblank_on(crtc); 1873 if (new_crtc_state->event) 1874 drm_crtc_vblank_get(crtc); 1875 } 1876 } 1877 1878 /* Update plane(s). */ 1879 for_each_new_plane_in_state(state, plane, new_plane_state, i) { 1880 struct nv50_wndw_atom *asyw = nv50_wndw_atom(new_plane_state); 1881 struct nv50_wndw *wndw = nv50_wndw(plane); 1882 1883 NV_ATOMIC(drm, "%s: set %02x (clr %02x)\n", plane->name, 1884 asyw->set.mask, asyw->clr.mask); 1885 if ( !asyw->set.mask && 1886 (!asyw->clr.mask || atom->flush_disable)) 1887 continue; 1888 1889 nv50_wndw_flush_set(wndw, interlock, asyw); 1890 } 1891 1892 /* Flush update. */ 1893 nv50_disp_atomic_commit_wndw(state, interlock); 1894 1895 if (interlock[NV50_DISP_INTERLOCK_CORE]) { 1896 if (interlock[NV50_DISP_INTERLOCK_BASE] || 1897 interlock[NV50_DISP_INTERLOCK_OVLY] || 1898 interlock[NV50_DISP_INTERLOCK_WNDW] || 1899 !atom->state.legacy_cursor_update) 1900 nv50_disp_atomic_commit_core(state, interlock); 1901 else 1902 disp->core->func->update(disp->core, interlock, false); 1903 } 1904 1905 if (atom->lock_core) 1906 mutex_unlock(&disp->mutex); 1907 1908 /* Wait for HW to signal completion. */ 1909 for_each_new_plane_in_state(state, plane, new_plane_state, i) { 1910 struct nv50_wndw_atom *asyw = nv50_wndw_atom(new_plane_state); 1911 struct nv50_wndw *wndw = nv50_wndw(plane); 1912 int ret = nv50_wndw_wait_armed(wndw, asyw); 1913 if (ret) 1914 NV_ERROR(drm, "%s: timeout\n", plane->name); 1915 } 1916 1917 for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { 1918 if (new_crtc_state->event) { 1919 unsigned long flags; 1920 /* Get correct count/ts if racing with vblank irq */ 1921 if (new_crtc_state->active) 1922 drm_crtc_accurate_vblank_count(crtc); 1923 spin_lock_irqsave(&crtc->dev->event_lock, flags); 1924 drm_crtc_send_vblank_event(crtc, new_crtc_state->event); 1925 spin_unlock_irqrestore(&crtc->dev->event_lock, flags); 1926 1927 new_crtc_state->event = NULL; 1928 if (new_crtc_state->active) 1929 drm_crtc_vblank_put(crtc); 1930 } 1931 } 1932 1933 drm_atomic_helper_commit_hw_done(state); 1934 drm_atomic_helper_cleanup_planes(dev, state); 1935 drm_atomic_helper_commit_cleanup_done(state); 1936 drm_atomic_state_put(state); 1937 } 1938 1939 static void 1940 nv50_disp_atomic_commit_work(struct work_struct *work) 1941 { 1942 struct drm_atomic_state *state = 1943 container_of(work, typeof(*state), commit_work); 1944 nv50_disp_atomic_commit_tail(state); 1945 } 1946 1947 static int 1948 nv50_disp_atomic_commit(struct drm_device *dev, 1949 struct drm_atomic_state *state, bool nonblock) 1950 { 1951 struct nouveau_drm *drm = nouveau_drm(dev); 1952 struct drm_plane_state *new_plane_state; 1953 struct drm_plane *plane; 1954 struct drm_crtc *crtc; 1955 bool active = false; 1956 int ret, i; 1957 1958 ret = pm_runtime_get_sync(dev->dev); 1959 if (ret < 0 && ret != -EACCES) 1960 return ret; 1961 1962 ret = drm_atomic_helper_setup_commit(state, nonblock); 1963 if (ret) 1964 goto done; 1965 1966 INIT_WORK(&state->commit_work, nv50_disp_atomic_commit_work); 1967 1968 ret = drm_atomic_helper_prepare_planes(dev, state); 1969 if (ret) 1970 goto done; 1971 1972 if (!nonblock) { 1973 ret = drm_atomic_helper_wait_for_fences(dev, state, true); 1974 if (ret) 1975 goto err_cleanup; 1976 } 1977 1978 ret = drm_atomic_helper_swap_state(state, true); 1979 if (ret) 1980 goto err_cleanup; 1981 1982 for_each_new_plane_in_state(state, plane, new_plane_state, i) { 1983 struct nv50_wndw_atom *asyw = nv50_wndw_atom(new_plane_state); 1984 struct nv50_wndw *wndw = nv50_wndw(plane); 1985 1986 if (asyw->set.image) 1987 nv50_wndw_ntfy_enable(wndw, asyw); 1988 } 1989 1990 drm_atomic_state_get(state); 1991 1992 if (nonblock) 1993 queue_work(system_unbound_wq, &state->commit_work); 1994 else 1995 nv50_disp_atomic_commit_tail(state); 1996 1997 drm_for_each_crtc(crtc, dev) { 1998 if (crtc->state->active) { 1999 if (!drm->have_disp_power_ref) { 2000 drm->have_disp_power_ref = true; 2001 return 0; 2002 } 2003 active = true; 2004 break; 2005 } 2006 } 2007 2008 if (!active && drm->have_disp_power_ref) { 2009 pm_runtime_put_autosuspend(dev->dev); 2010 drm->have_disp_power_ref = false; 2011 } 2012 2013 err_cleanup: 2014 if (ret) 2015 drm_atomic_helper_cleanup_planes(dev, state); 2016 done: 2017 pm_runtime_put_autosuspend(dev->dev); 2018 return ret; 2019 } 2020 2021 static struct nv50_outp_atom * 2022 nv50_disp_outp_atomic_add(struct nv50_atom *atom, struct drm_encoder *encoder) 2023 { 2024 struct nv50_outp_atom *outp; 2025 2026 list_for_each_entry(outp, &atom->outp, head) { 2027 if (outp->encoder == encoder) 2028 return outp; 2029 } 2030 2031 outp = kzalloc(sizeof(*outp), GFP_KERNEL); 2032 if (!outp) 2033 return ERR_PTR(-ENOMEM); 2034 2035 list_add(&outp->head, &atom->outp); 2036 outp->encoder = encoder; 2037 return outp; 2038 } 2039 2040 static int 2041 nv50_disp_outp_atomic_check_clr(struct nv50_atom *atom, 2042 struct drm_connector_state *old_connector_state) 2043 { 2044 struct drm_encoder *encoder = old_connector_state->best_encoder; 2045 struct drm_crtc_state *old_crtc_state, *new_crtc_state; 2046 struct drm_crtc *crtc; 2047 struct nv50_outp_atom *outp; 2048 2049 if (!(crtc = old_connector_state->crtc)) 2050 return 0; 2051 2052 old_crtc_state = drm_atomic_get_old_crtc_state(&atom->state, crtc); 2053 new_crtc_state = drm_atomic_get_new_crtc_state(&atom->state, crtc); 2054 if (old_crtc_state->active && drm_atomic_crtc_needs_modeset(new_crtc_state)) { 2055 outp = nv50_disp_outp_atomic_add(atom, encoder); 2056 if (IS_ERR(outp)) 2057 return PTR_ERR(outp); 2058 2059 if (outp->encoder->encoder_type == DRM_MODE_ENCODER_DPMST) { 2060 outp->flush_disable = true; 2061 atom->flush_disable = true; 2062 } 2063 outp->clr.ctrl = true; 2064 atom->lock_core = true; 2065 } 2066 2067 return 0; 2068 } 2069 2070 static int 2071 nv50_disp_outp_atomic_check_set(struct nv50_atom *atom, 2072 struct drm_connector_state *connector_state) 2073 { 2074 struct drm_encoder *encoder = connector_state->best_encoder; 2075 struct drm_crtc_state *new_crtc_state; 2076 struct drm_crtc *crtc; 2077 struct nv50_outp_atom *outp; 2078 2079 if (!(crtc = connector_state->crtc)) 2080 return 0; 2081 2082 new_crtc_state = drm_atomic_get_new_crtc_state(&atom->state, crtc); 2083 if (new_crtc_state->active && drm_atomic_crtc_needs_modeset(new_crtc_state)) { 2084 outp = nv50_disp_outp_atomic_add(atom, encoder); 2085 if (IS_ERR(outp)) 2086 return PTR_ERR(outp); 2087 2088 outp->set.ctrl = true; 2089 atom->lock_core = true; 2090 } 2091 2092 return 0; 2093 } 2094 2095 static int 2096 nv50_disp_atomic_check(struct drm_device *dev, struct drm_atomic_state *state) 2097 { 2098 struct nv50_atom *atom = nv50_atom(state); 2099 struct drm_connector_state *old_connector_state, *new_connector_state; 2100 struct drm_connector *connector; 2101 struct drm_crtc_state *new_crtc_state; 2102 struct drm_crtc *crtc; 2103 int ret, i; 2104 2105 /* We need to handle colour management on a per-plane basis. */ 2106 for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) { 2107 if (new_crtc_state->color_mgmt_changed) { 2108 ret = drm_atomic_add_affected_planes(state, crtc); 2109 if (ret) 2110 return ret; 2111 } 2112 } 2113 2114 ret = drm_atomic_helper_check(dev, state); 2115 if (ret) 2116 return ret; 2117 2118 for_each_oldnew_connector_in_state(state, connector, old_connector_state, new_connector_state, i) { 2119 ret = nv50_disp_outp_atomic_check_clr(atom, old_connector_state); 2120 if (ret) 2121 return ret; 2122 2123 ret = nv50_disp_outp_atomic_check_set(atom, new_connector_state); 2124 if (ret) 2125 return ret; 2126 } 2127 2128 return 0; 2129 } 2130 2131 static void 2132 nv50_disp_atomic_state_clear(struct drm_atomic_state *state) 2133 { 2134 struct nv50_atom *atom = nv50_atom(state); 2135 struct nv50_outp_atom *outp, *outt; 2136 2137 list_for_each_entry_safe(outp, outt, &atom->outp, head) { 2138 list_del(&outp->head); 2139 kfree(outp); 2140 } 2141 2142 drm_atomic_state_default_clear(state); 2143 } 2144 2145 static void 2146 nv50_disp_atomic_state_free(struct drm_atomic_state *state) 2147 { 2148 struct nv50_atom *atom = nv50_atom(state); 2149 drm_atomic_state_default_release(&atom->state); 2150 kfree(atom); 2151 } 2152 2153 static struct drm_atomic_state * 2154 nv50_disp_atomic_state_alloc(struct drm_device *dev) 2155 { 2156 struct nv50_atom *atom; 2157 if (!(atom = kzalloc(sizeof(*atom), GFP_KERNEL)) || 2158 drm_atomic_state_init(dev, &atom->state) < 0) { 2159 kfree(atom); 2160 return NULL; 2161 } 2162 INIT_LIST_HEAD(&atom->outp); 2163 return &atom->state; 2164 } 2165 2166 static const struct drm_mode_config_funcs 2167 nv50_disp_func = { 2168 .fb_create = nouveau_user_framebuffer_create, 2169 .output_poll_changed = nouveau_fbcon_output_poll_changed, 2170 .atomic_check = nv50_disp_atomic_check, 2171 .atomic_commit = nv50_disp_atomic_commit, 2172 .atomic_state_alloc = nv50_disp_atomic_state_alloc, 2173 .atomic_state_clear = nv50_disp_atomic_state_clear, 2174 .atomic_state_free = nv50_disp_atomic_state_free, 2175 }; 2176 2177 /****************************************************************************** 2178 * Init 2179 *****************************************************************************/ 2180 2181 void 2182 nv50_display_fini(struct drm_device *dev) 2183 { 2184 struct nouveau_encoder *nv_encoder; 2185 struct drm_encoder *encoder; 2186 struct drm_plane *plane; 2187 2188 drm_for_each_plane(plane, dev) { 2189 struct nv50_wndw *wndw = nv50_wndw(plane); 2190 if (plane->funcs != &nv50_wndw) 2191 continue; 2192 nv50_wndw_fini(wndw); 2193 } 2194 2195 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 2196 if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST) { 2197 nv_encoder = nouveau_encoder(encoder); 2198 nv50_mstm_fini(nv_encoder->dp.mstm); 2199 } 2200 } 2201 } 2202 2203 int 2204 nv50_display_init(struct drm_device *dev) 2205 { 2206 struct nv50_core *core = nv50_disp(dev)->core; 2207 struct drm_encoder *encoder; 2208 struct drm_plane *plane; 2209 2210 core->func->init(core); 2211 2212 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { 2213 if (encoder->encoder_type != DRM_MODE_ENCODER_DPMST) { 2214 struct nouveau_encoder *nv_encoder = 2215 nouveau_encoder(encoder); 2216 nv50_mstm_init(nv_encoder->dp.mstm); 2217 } 2218 } 2219 2220 drm_for_each_plane(plane, dev) { 2221 struct nv50_wndw *wndw = nv50_wndw(plane); 2222 if (plane->funcs != &nv50_wndw) 2223 continue; 2224 nv50_wndw_init(wndw); 2225 } 2226 2227 return 0; 2228 } 2229 2230 void 2231 nv50_display_destroy(struct drm_device *dev) 2232 { 2233 struct nv50_disp *disp = nv50_disp(dev); 2234 2235 nv50_core_del(&disp->core); 2236 2237 nouveau_bo_unmap(disp->sync); 2238 if (disp->sync) 2239 nouveau_bo_unpin(disp->sync); 2240 nouveau_bo_ref(NULL, &disp->sync); 2241 2242 nouveau_display(dev)->priv = NULL; 2243 kfree(disp); 2244 } 2245 2246 int 2247 nv50_display_create(struct drm_device *dev) 2248 { 2249 struct nvif_device *device = &nouveau_drm(dev)->client.device; 2250 struct nouveau_drm *drm = nouveau_drm(dev); 2251 struct dcb_table *dcb = &drm->vbios.dcb; 2252 struct drm_connector *connector, *tmp; 2253 struct nv50_disp *disp; 2254 struct dcb_output *dcbe; 2255 int crtcs, ret, i; 2256 2257 disp = kzalloc(sizeof(*disp), GFP_KERNEL); 2258 if (!disp) 2259 return -ENOMEM; 2260 2261 mutex_init(&disp->mutex); 2262 2263 nouveau_display(dev)->priv = disp; 2264 nouveau_display(dev)->dtor = nv50_display_destroy; 2265 nouveau_display(dev)->init = nv50_display_init; 2266 nouveau_display(dev)->fini = nv50_display_fini; 2267 disp->disp = &nouveau_display(dev)->disp; 2268 dev->mode_config.funcs = &nv50_disp_func; 2269 dev->mode_config.quirk_addfb_prefer_xbgr_30bpp = true; 2270 2271 /* small shared memory area we use for notifiers and semaphores */ 2272 ret = nouveau_bo_new(&drm->client, 4096, 0x1000, TTM_PL_FLAG_VRAM, 2273 0, 0x0000, NULL, NULL, &disp->sync); 2274 if (!ret) { 2275 ret = nouveau_bo_pin(disp->sync, TTM_PL_FLAG_VRAM, true); 2276 if (!ret) { 2277 ret = nouveau_bo_map(disp->sync); 2278 if (ret) 2279 nouveau_bo_unpin(disp->sync); 2280 } 2281 if (ret) 2282 nouveau_bo_ref(NULL, &disp->sync); 2283 } 2284 2285 if (ret) 2286 goto out; 2287 2288 /* allocate master evo channel */ 2289 ret = nv50_core_new(drm, &disp->core); 2290 if (ret) 2291 goto out; 2292 2293 /* create crtc objects to represent the hw heads */ 2294 if (disp->disp->object.oclass >= GV100_DISP) 2295 crtcs = nvif_rd32(&device->object, 0x610060) & 0xff; 2296 else 2297 if (disp->disp->object.oclass >= GF110_DISP) 2298 crtcs = nvif_rd32(&device->object, 0x612004) & 0xf; 2299 else 2300 crtcs = 0x3; 2301 2302 for (i = 0; i < fls(crtcs); i++) { 2303 if (!(crtcs & (1 << i))) 2304 continue; 2305 ret = nv50_head_create(dev, i); 2306 if (ret) 2307 goto out; 2308 } 2309 2310 /* create encoder/connector objects based on VBIOS DCB table */ 2311 for (i = 0, dcbe = &dcb->entry[0]; i < dcb->entries; i++, dcbe++) { 2312 connector = nouveau_connector_create(dev, dcbe); 2313 if (IS_ERR(connector)) 2314 continue; 2315 2316 if (dcbe->location == DCB_LOC_ON_CHIP) { 2317 switch (dcbe->type) { 2318 case DCB_OUTPUT_TMDS: 2319 case DCB_OUTPUT_LVDS: 2320 case DCB_OUTPUT_DP: 2321 ret = nv50_sor_create(connector, dcbe); 2322 break; 2323 case DCB_OUTPUT_ANALOG: 2324 ret = nv50_dac_create(connector, dcbe); 2325 break; 2326 default: 2327 ret = -ENODEV; 2328 break; 2329 } 2330 } else { 2331 ret = nv50_pior_create(connector, dcbe); 2332 } 2333 2334 if (ret) { 2335 NV_WARN(drm, "failed to create encoder %d/%d/%d: %d\n", 2336 dcbe->location, dcbe->type, 2337 ffs(dcbe->or) - 1, ret); 2338 ret = 0; 2339 } 2340 } 2341 2342 /* cull any connectors we created that don't have an encoder */ 2343 list_for_each_entry_safe(connector, tmp, &dev->mode_config.connector_list, head) { 2344 if (connector->encoder_ids[0]) 2345 continue; 2346 2347 NV_WARN(drm, "%s has no encoders, removing\n", 2348 connector->name); 2349 connector->funcs->destroy(connector); 2350 } 2351 2352 /* Disable vblank irqs aggressively for power-saving, safe on nv50+ */ 2353 dev->vblank_disable_immediate = true; 2354 2355 out: 2356 if (ret) 2357 nv50_display_destroy(dev); 2358 return ret; 2359 } 2360