drivers/gpu/drm/amd/amdgpu/amdgpu_display.c

   1 /*
   2  * Copyright 2007-8 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  21  * OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors: Dave Airlie
  24  *          Alex Deucher
  25  */
  26
  27 #include <drm/amdgpu_drm.h>
  28 #include "amdgpu.h"
  29 #include "amdgpu_i2c.h"
  30 #include "atom.h"
  31 #include "amdgpu_connectors.h"
  32 #include "amdgpu_display.h"
  33 #include <asm/div64.h>
  34
  35 #include <linux/pci.h>
  36 #include <linux/pm_runtime.h>
  37 #include <drm/drm_crtc_helper.h>
  38 #include <drm/drm_edid.h>
  39 #include <drm/drm_gem_framebuffer_helper.h>
  40 #include <drm/drm_fb_helper.h>
  41 #include <drm/drm_vblank.h>
  42
  43 static void amdgpu_display_flip_callback(struct dma_fence *f,
  44                                          struct dma_fence_cb *cb)
  45 {
  46         struct amdgpu_flip_work *work =
  47                 container_of(cb, struct amdgpu_flip_work, cb);
  48
  49         dma_fence_put(f);
  50         schedule_work(&work->flip_work.work);
  51 }
  52
  53 static bool amdgpu_display_flip_handle_fence(struct amdgpu_flip_work *work,
  54                                              struct dma_fence **f)
  55 {
  56         struct dma_fence *fence= *f;
  57
  58         if (fence == NULL)
  59                 return false;
  60
  61         *f = NULL;
  62
  63         if (!dma_fence_add_callback(fence, &work->cb,
  64                                     amdgpu_display_flip_callback))
  65                 return true;
  66
  67         dma_fence_put(fence);
  68         return false;
  69 }
  70
  71 static void amdgpu_display_flip_work_func(struct work_struct *__work)
  72 {
  73         struct delayed_work *delayed_work =
  74                 container_of(__work, struct delayed_work, work);
  75         struct amdgpu_flip_work *work =
  76                 container_of(delayed_work, struct amdgpu_flip_work, flip_work);
  77         struct amdgpu_device *adev = work->adev;
  78         struct amdgpu_crtc *amdgpu_crtc = adev->mode_info.crtcs[work->crtc_id];
  79
  80         struct drm_crtc *crtc = &amdgpu_crtc->base;
  81         unsigned long flags;
  82         unsigned i;
  83         int vpos, hpos;
  84
  85         if (amdgpu_display_flip_handle_fence(work, &work->excl))
  86                 return;
  87
  88         for (i = 0; i < work->shared_count; ++i)
  89                 if (amdgpu_display_flip_handle_fence(work, &work->shared[i]))
  90                         return;
  91
  92         /* Wait until we're out of the vertical blank period before the one
  93          * targeted by the flip
  94          */
  95         if (amdgpu_crtc->enabled &&
  96             (amdgpu_display_get_crtc_scanoutpos(adev->ddev, work->crtc_id, 0,
  97                                                 &vpos, &hpos, NULL, NULL,
  98                                                 &crtc->hwmode)
  99              & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_IN_VBLANK)) ==
 100             (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_IN_VBLANK) &&
 101             (int)(work->target_vblank -
 102                   amdgpu_get_vblank_counter_kms(crtc)) > 0) {
 103                 schedule_delayed_work(&work->flip_work, usecs_to_jiffies(1000));
 104                 return;
 105         }
 106
 107         /* We borrow the event spin lock for protecting flip_status */
 108         spin_lock_irqsave(&crtc->dev->event_lock, flags);
 109
 110         /* Do the flip (mmio) */
 111         adev->mode_info.funcs->page_flip(adev, work->crtc_id, work->base, work->async);
 112
 113         /* Set the flip status */
 114         amdgpu_crtc->pflip_status = AMDGPU_FLIP_SUBMITTED;
 115         spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 116
 117
 118         DRM_DEBUG_DRIVER("crtc:%d[%p], pflip_stat:AMDGPU_FLIP_SUBMITTED, work: %p,\n",
 119                                          amdgpu_crtc->crtc_id, amdgpu_crtc, work);
 120
 121 }
 122
 123 /*
 124  * Handle unpin events outside the interrupt handler proper.
 125  */
 126 static void amdgpu_display_unpin_work_func(struct work_struct *__work)
 127 {
 128         struct amdgpu_flip_work *work =
 129                 container_of(__work, struct amdgpu_flip_work, unpin_work);
 130         int r;
 131
 132         /* unpin of the old buffer */
 133         r = amdgpu_bo_reserve(work->old_abo, true);
 134         if (likely(r == 0)) {
 135                 r = amdgpu_bo_unpin(work->old_abo);
 136                 if (unlikely(r != 0)) {
 137                         DRM_ERROR("failed to unpin buffer after flip\n");
 138                 }
 139                 amdgpu_bo_unreserve(work->old_abo);
 140         } else
 141                 DRM_ERROR("failed to reserve buffer after flip\n");
 142
 143         amdgpu_bo_unref(&work->old_abo);
 144         kfree(work->shared);
 145         kfree(work);
 146 }
 147
 148 int amdgpu_display_crtc_page_flip_target(struct drm_crtc *crtc,
 149                                 struct drm_framebuffer *fb,
 150                                 struct drm_pending_vblank_event *event,
 151                                 uint32_t page_flip_flags, uint32_t target,
 152                                 struct drm_modeset_acquire_ctx *ctx)
 153 {
 154         struct drm_device *dev = crtc->dev;
 155         struct amdgpu_device *adev = dev->dev_private;
 156         struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 157         struct drm_gem_object *obj;
 158         struct amdgpu_flip_work *work;
 159         struct amdgpu_bo *new_abo;
 160         unsigned long flags;
 161         u64 tiling_flags;
 162         int i, r;
 163
 164         work = kzalloc(sizeof *work, GFP_KERNEL);
 165         if (work == NULL)
 166                 return -ENOMEM;
 167
 168         INIT_DELAYED_WORK(&work->flip_work, amdgpu_display_flip_work_func);
 169         INIT_WORK(&work->unpin_work, amdgpu_display_unpin_work_func);
 170
 171         work->event = event;
 172         work->adev = adev;
 173         work->crtc_id = amdgpu_crtc->crtc_id;
 174         work->async = (page_flip_flags & DRM_MODE_PAGE_FLIP_ASYNC) != 0;
 175
 176         /* schedule unpin of the old buffer */
 177         obj = crtc->primary->fb->obj[0];
 178
 179         /* take a reference to the old object */
 180         work->old_abo = gem_to_amdgpu_bo(obj);
 181         amdgpu_bo_ref(work->old_abo);
 182
 183         obj = fb->obj[0];
 184         new_abo = gem_to_amdgpu_bo(obj);
 185
 186         /* pin the new buffer */
 187         r = amdgpu_bo_reserve(new_abo, false);
 188         if (unlikely(r != 0)) {
 189                 DRM_ERROR("failed to reserve new abo buffer before flip\n");
 190                 goto cleanup;
 191         }
 192
 193         if (!adev->enable_virtual_display) {
 194                 r = amdgpu_bo_pin(new_abo,
 195                                   amdgpu_display_supported_domains(adev, new_abo->flags));
 196                 if (unlikely(r != 0)) {
 197                         DRM_ERROR("failed to pin new abo buffer before flip\n");
 198                         goto unreserve;
 199                 }
 200         }
 201
 202         r = amdgpu_ttm_alloc_gart(&new_abo->tbo);
 203         if (unlikely(r != 0)) {
 204                 DRM_ERROR("%p bind failed\n", new_abo);
 205                 goto unpin;
 206         }
 207
 208         r = dma_resv_get_fences_rcu(new_abo->tbo.base.resv, &work->excl,
 209                                               &work->shared_count,
 210                                               &work->shared);
 211         if (unlikely(r != 0)) {
 212                 DRM_ERROR("failed to get fences for buffer\n");
 213                 goto unpin;
 214         }
 215
 216         amdgpu_bo_get_tiling_flags(new_abo, &tiling_flags);
 217         amdgpu_bo_unreserve(new_abo);
 218
 219         if (!adev->enable_virtual_display)
 220                 work->base = amdgpu_bo_gpu_offset(new_abo);
 221         work->target_vblank = target - (uint32_t)drm_crtc_vblank_count(crtc) +
 222                 amdgpu_get_vblank_counter_kms(crtc);
 223
 224         /* we borrow the event spin lock for protecting flip_wrok */
 225         spin_lock_irqsave(&crtc->dev->event_lock, flags);
 226         if (amdgpu_crtc->pflip_status != AMDGPU_FLIP_NONE) {
 227                 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
 228                 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 229                 r = -EBUSY;
 230                 goto pflip_cleanup;
 231         }
 232
 233         amdgpu_crtc->pflip_status = AMDGPU_FLIP_PENDING;
 234         amdgpu_crtc->pflip_works = work;
 235
 236
 237         DRM_DEBUG_DRIVER("crtc:%d[%p], pflip_stat:AMDGPU_FLIP_PENDING, work: %p,\n",
 238                                          amdgpu_crtc->crtc_id, amdgpu_crtc, work);
 239         /* update crtc fb */
 240         crtc->primary->fb = fb;
 241         spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
 242         amdgpu_display_flip_work_func(&work->flip_work.work);
 243         return 0;
 244
 245 pflip_cleanup:
 246         if (unlikely(amdgpu_bo_reserve(new_abo, false) != 0)) {
 247                 DRM_ERROR("failed to reserve new abo in error path\n");
 248                 goto cleanup;
 249         }
 250 unpin:
 251         if (!adev->enable_virtual_display)
 252                 if (unlikely(amdgpu_bo_unpin(new_abo) != 0))
 253                         DRM_ERROR("failed to unpin new abo in error path\n");
 254
 255 unreserve:
 256         amdgpu_bo_unreserve(new_abo);
 257
 258 cleanup:
 259         amdgpu_bo_unref(&work->old_abo);
 260         dma_fence_put(work->excl);
 261         for (i = 0; i < work->shared_count; ++i)
 262                 dma_fence_put(work->shared[i]);
 263         kfree(work->shared);
 264         kfree(work);
 265
 266         return r;
 267 }
 268
 269 int amdgpu_display_crtc_set_config(struct drm_mode_set *set,
 270                                    struct drm_modeset_acquire_ctx *ctx)
 271 {
 272         struct drm_device *dev;
 273         struct amdgpu_device *adev;
 274         struct drm_crtc *crtc;
 275         bool active = false;
 276         int ret;
 277
 278         if (!set || !set->crtc)
 279                 return -EINVAL;
 280
 281         dev = set->crtc->dev;
 282
 283         ret = pm_runtime_get_sync(dev->dev);
 284         if (ret < 0)
 285                 return ret;
 286
 287         ret = drm_crtc_helper_set_config(set, ctx);
 288
 289         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
 290                 if (crtc->enabled)
 291                         active = true;
 292
 293         pm_runtime_mark_last_busy(dev->dev);
 294
 295         adev = dev->dev_private;
 296         /* if we have active crtcs and we don't have a power ref,
 297            take the current one */
 298         if (active && !adev->have_disp_power_ref) {
 299                 adev->have_disp_power_ref = true;
 300                 return ret;
 301         }
 302         /* if we have no active crtcs, then drop the power ref
 303            we got before */
 304         if (!active && adev->have_disp_power_ref) {
 305                 pm_runtime_put_autosuspend(dev->dev);
 306                 adev->have_disp_power_ref = false;
 307         }
 308
 309         /* drop the power reference we got coming in here */
 310         pm_runtime_put_autosuspend(dev->dev);
 311         return ret;
 312 }
 313
 314 static const char *encoder_names[41] = {
 315         "NONE",
 316         "INTERNAL_LVDS",
 317         "INTERNAL_TMDS1",
 318         "INTERNAL_TMDS2",
 319         "INTERNAL_DAC1",
 320         "INTERNAL_DAC2",
 321         "INTERNAL_SDVOA",
 322         "INTERNAL_SDVOB",
 323         "SI170B",
 324         "CH7303",
 325         "CH7301",
 326         "INTERNAL_DVO1",
 327         "EXTERNAL_SDVOA",
 328         "EXTERNAL_SDVOB",
 329         "TITFP513",
 330         "INTERNAL_LVTM1",
 331         "VT1623",
 332         "HDMI_SI1930",
 333         "HDMI_INTERNAL",
 334         "INTERNAL_KLDSCP_TMDS1",
 335         "INTERNAL_KLDSCP_DVO1",
 336         "INTERNAL_KLDSCP_DAC1",
 337         "INTERNAL_KLDSCP_DAC2",
 338         "SI178",
 339         "MVPU_FPGA",
 340         "INTERNAL_DDI",
 341         "VT1625",
 342         "HDMI_SI1932",
 343         "DP_AN9801",
 344         "DP_DP501",
 345         "INTERNAL_UNIPHY",
 346         "INTERNAL_KLDSCP_LVTMA",
 347         "INTERNAL_UNIPHY1",
 348         "INTERNAL_UNIPHY2",
 349         "NUTMEG",
 350         "TRAVIS",
 351         "INTERNAL_VCE",
 352         "INTERNAL_UNIPHY3",
 353         "HDMI_ANX9805",
 354         "INTERNAL_AMCLK",
 355         "VIRTUAL",
 356 };
 357
 358 static const char *hpd_names[6] = {
 359         "HPD1",
 360         "HPD2",
 361         "HPD3",
 362         "HPD4",
 363         "HPD5",
 364         "HPD6",
 365 };
 366
 367 void amdgpu_display_print_display_setup(struct drm_device *dev)
 368 {
 369         struct drm_connector *connector;
 370         struct amdgpu_connector *amdgpu_connector;
 371         struct drm_encoder *encoder;
 372         struct amdgpu_encoder *amdgpu_encoder;
 373         struct drm_connector_list_iter iter;
 374         uint32_t devices;
 375         int i = 0;
 376
 377         drm_connector_list_iter_begin(dev, &iter);
 378         DRM_INFO("AMDGPU Display Connectors\n");
 379         drm_for_each_connector_iter(connector, &iter) {
 380                 amdgpu_connector = to_amdgpu_connector(connector);
 381                 DRM_INFO("Connector %d:\n", i);
 382                 DRM_INFO("  %s\n", connector->name);
 383                 if (amdgpu_connector->hpd.hpd != AMDGPU_HPD_NONE)
 384                         DRM_INFO("  %s\n", hpd_names[amdgpu_connector->hpd.hpd]);
 385                 if (amdgpu_connector->ddc_bus) {
 386                         DRM_INFO("  DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
 387                                  amdgpu_connector->ddc_bus->rec.mask_clk_reg,
 388                                  amdgpu_connector->ddc_bus->rec.mask_data_reg,
 389                                  amdgpu_connector->ddc_bus->rec.a_clk_reg,
 390                                  amdgpu_connector->ddc_bus->rec.a_data_reg,
 391                                  amdgpu_connector->ddc_bus->rec.en_clk_reg,
 392                                  amdgpu_connector->ddc_bus->rec.en_data_reg,
 393                                  amdgpu_connector->ddc_bus->rec.y_clk_reg,
 394                                  amdgpu_connector->ddc_bus->rec.y_data_reg);
 395                         if (amdgpu_connector->router.ddc_valid)
 396                                 DRM_INFO("  DDC Router 0x%x/0x%x\n",
 397                                          amdgpu_connector->router.ddc_mux_control_pin,
 398                                          amdgpu_connector->router.ddc_mux_state);
 399                         if (amdgpu_connector->router.cd_valid)
 400                                 DRM_INFO("  Clock/Data Router 0x%x/0x%x\n",
 401                                          amdgpu_connector->router.cd_mux_control_pin,
 402                                          amdgpu_connector->router.cd_mux_state);
 403                 } else {
 404                         if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
 405                             connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 406                             connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 407                             connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
 408                             connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 409                             connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
 410                                 DRM_INFO("  DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
 411                 }
 412                 DRM_INFO("  Encoders:\n");
 413                 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 414                         amdgpu_encoder = to_amdgpu_encoder(encoder);
 415                         devices = amdgpu_encoder->devices & amdgpu_connector->devices;
 416                         if (devices) {
 417                                 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
 418                                         DRM_INFO("    CRT1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 419                                 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
 420                                         DRM_INFO("    CRT2: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 421                                 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
 422                                         DRM_INFO("    LCD1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 423                                 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
 424                                         DRM_INFO("    DFP1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 425                                 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
 426                                         DRM_INFO("    DFP2: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 427                                 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
 428                                         DRM_INFO("    DFP3: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 429                                 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
 430                                         DRM_INFO("    DFP4: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 431                                 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
 432                                         DRM_INFO("    DFP5: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 433                                 if (devices & ATOM_DEVICE_DFP6_SUPPORT)
 434                                         DRM_INFO("    DFP6: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 435                                 if (devices & ATOM_DEVICE_TV1_SUPPORT)
 436                                         DRM_INFO("    TV1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 437                                 if (devices & ATOM_DEVICE_CV_SUPPORT)
 438                                         DRM_INFO("    CV: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 439                         }
 440                 }
 441                 i++;
 442         }
 443         drm_connector_list_iter_end(&iter);
 444 }
 445
 446 /**
 447  * amdgpu_display_ddc_probe
 448  *
 449  */
 450 bool amdgpu_display_ddc_probe(struct amdgpu_connector *amdgpu_connector,
 451                               bool use_aux)
 452 {
 453         u8 out = 0x0;
 454         u8 buf[8];
 455         int ret;
 456         struct i2c_msg msgs[] = {
 457                 {
 458                         .addr = DDC_ADDR,
 459                         .flags = 0,
 460                         .len = 1,
 461                         .buf = &out,
 462                 },
 463                 {
 464                         .addr = DDC_ADDR,
 465                         .flags = I2C_M_RD,
 466                         .len = 8,
 467                         .buf = buf,
 468                 }
 469         };
 470
 471         /* on hw with routers, select right port */
 472         if (amdgpu_connector->router.ddc_valid)
 473                 amdgpu_i2c_router_select_ddc_port(amdgpu_connector);
 474
 475         if (use_aux) {
 476                 ret = i2c_transfer(&amdgpu_connector->ddc_bus->aux.ddc, msgs, 2);
 477         } else {
 478                 ret = i2c_transfer(&amdgpu_connector->ddc_bus->adapter, msgs, 2);
 479         }
 480
 481         if (ret != 2)
 482                 /* Couldn't find an accessible DDC on this connector */
 483                 return false;
 484         /* Probe also for valid EDID header
 485          * EDID header starts with:
 486          * 0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00.
 487          * Only the first 6 bytes must be valid as
 488          * drm_edid_block_valid() can fix the last 2 bytes */
 489         if (drm_edid_header_is_valid(buf) < 6) {
 490                 /* Couldn't find an accessible EDID on this
 491                  * connector */
 492                 return false;
 493         }
 494         return true;
 495 }
 496
 497 static const struct drm_framebuffer_funcs amdgpu_fb_funcs = {
 498         .destroy = drm_gem_fb_destroy,
 499         .create_handle = drm_gem_fb_create_handle,
 500 };
 501
 502 uint32_t amdgpu_display_supported_domains(struct amdgpu_device *adev,
 503                                           uint64_t bo_flags)
 504 {
 505         uint32_t domain = AMDGPU_GEM_DOMAIN_VRAM;
 506
 507 #if defined(CONFIG_DRM_AMD_DC)
 508         /*
 509          * if amdgpu_bo_support_uswc returns false it means that USWC mappings
 510          * is not supported for this board. But this mapping is required
 511          * to avoid hang caused by placement of scanout BO in GTT on certain
 512          * APUs. So force the BO placement to VRAM in case this architecture
 513          * will not allow USWC mappings.
 514          * Also, don't allow GTT domain if the BO doens't have USWC falg set.
 515          */
 516         if ((bo_flags & AMDGPU_GEM_CREATE_CPU_GTT_USWC) &&
 517             amdgpu_bo_support_uswc(bo_flags) &&
 518             amdgpu_device_asic_has_dc_support(adev->asic_type)) {
 519                 switch (adev->asic_type) {
 520                 case CHIP_CARRIZO:
 521                 case CHIP_STONEY:
 522                         domain |= AMDGPU_GEM_DOMAIN_GTT;
 523                         break;
 524                 case CHIP_RAVEN:
 525                         /* enable S/G on PCO and RV2 */
 526                         if (adev->rev_id >= 0x8 || adev->pdev->device == 0x15d8)
 527                                 domain |= AMDGPU_GEM_DOMAIN_GTT;
 528                         break;
 529                 default:
 530                         break;
 531                 }
 532         }
 533 #endif
 534
 535         return domain;
 536 }
 537
 538 int amdgpu_display_framebuffer_init(struct drm_device *dev,
 539                                     struct amdgpu_framebuffer *rfb,
 540                                     const struct drm_mode_fb_cmd2 *mode_cmd,
 541                                     struct drm_gem_object *obj)
 542 {
 543         int ret;
 544         rfb->base.obj[0] = obj;
 545         drm_helper_mode_fill_fb_struct(dev, &rfb->base, mode_cmd);
 546         ret = drm_framebuffer_init(dev, &rfb->base, &amdgpu_fb_funcs);
 547         if (ret) {
 548                 rfb->base.obj[0] = NULL;
 549                 return ret;
 550         }
 551         return 0;
 552 }
 553
 554 struct drm_framebuffer *
 555 amdgpu_display_user_framebuffer_create(struct drm_device *dev,
 556                                        struct drm_file *file_priv,
 557                                        const struct drm_mode_fb_cmd2 *mode_cmd)
 558 {
 559         struct drm_gem_object *obj;
 560         struct amdgpu_framebuffer *amdgpu_fb;
 561         int ret;
 562
 563         obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
 564         if (obj ==  NULL) {
 565                 dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, "
 566                         "can't create framebuffer\n", mode_cmd->handles[0]);
 567                 return ERR_PTR(-ENOENT);
 568         }
 569
 570         /* Handle is imported dma-buf, so cannot be migrated to VRAM for scanout */
 571         if (obj->import_attach) {
 572                 DRM_DEBUG_KMS("Cannot create framebuffer from imported dma_buf\n");
 573                 return ERR_PTR(-EINVAL);
 574         }
 575
 576         amdgpu_fb = kzalloc(sizeof(*amdgpu_fb), GFP_KERNEL);
 577         if (amdgpu_fb == NULL) {
 578                 drm_gem_object_put_unlocked(obj);
 579                 return ERR_PTR(-ENOMEM);
 580         }
 581
 582         ret = amdgpu_display_framebuffer_init(dev, amdgpu_fb, mode_cmd, obj);
 583         if (ret) {
 584                 kfree(amdgpu_fb);
 585                 drm_gem_object_put_unlocked(obj);
 586                 return ERR_PTR(ret);
 587         }
 588
 589         return &amdgpu_fb->base;
 590 }
 591
 592 const struct drm_mode_config_funcs amdgpu_mode_funcs = {
 593         .fb_create = amdgpu_display_user_framebuffer_create,
 594         .output_poll_changed = drm_fb_helper_output_poll_changed,
 595 };
 596
 597 static const struct drm_prop_enum_list amdgpu_underscan_enum_list[] =
 598 {       { UNDERSCAN_OFF, "off" },
 599         { UNDERSCAN_ON, "on" },
 600         { UNDERSCAN_AUTO, "auto" },
 601 };
 602
 603 static const struct drm_prop_enum_list amdgpu_audio_enum_list[] =
 604 {       { AMDGPU_AUDIO_DISABLE, "off" },
 605         { AMDGPU_AUDIO_ENABLE, "on" },
 606         { AMDGPU_AUDIO_AUTO, "auto" },
 607 };
 608
 609 /* XXX support different dither options? spatial, temporal, both, etc. */
 610 static const struct drm_prop_enum_list amdgpu_dither_enum_list[] =
 611 {       { AMDGPU_FMT_DITHER_DISABLE, "off" },
 612         { AMDGPU_FMT_DITHER_ENABLE, "on" },
 613 };
 614
 615 int amdgpu_display_modeset_create_props(struct amdgpu_device *adev)
 616 {
 617         int sz;
 618
 619         adev->mode_info.coherent_mode_property =
 620                 drm_property_create_range(adev->ddev, 0 , "coherent", 0, 1);
 621         if (!adev->mode_info.coherent_mode_property)
 622                 return -ENOMEM;
 623
 624         adev->mode_info.load_detect_property =
 625                 drm_property_create_range(adev->ddev, 0, "load detection", 0, 1);
 626         if (!adev->mode_info.load_detect_property)
 627                 return -ENOMEM;
 628
 629         drm_mode_create_scaling_mode_property(adev->ddev);
 630
 631         sz = ARRAY_SIZE(amdgpu_underscan_enum_list);
 632         adev->mode_info.underscan_property =
 633                 drm_property_create_enum(adev->ddev, 0,
 634                                     "underscan",
 635                                     amdgpu_underscan_enum_list, sz);
 636
 637         adev->mode_info.underscan_hborder_property =
 638                 drm_property_create_range(adev->ddev, 0,
 639                                         "underscan hborder", 0, 128);
 640         if (!adev->mode_info.underscan_hborder_property)
 641                 return -ENOMEM;
 642
 643         adev->mode_info.underscan_vborder_property =
 644                 drm_property_create_range(adev->ddev, 0,
 645                                         "underscan vborder", 0, 128);
 646         if (!adev->mode_info.underscan_vborder_property)
 647                 return -ENOMEM;
 648
 649         sz = ARRAY_SIZE(amdgpu_audio_enum_list);
 650         adev->mode_info.audio_property =
 651                 drm_property_create_enum(adev->ddev, 0,
 652                                          "audio",
 653                                          amdgpu_audio_enum_list, sz);
 654
 655         sz = ARRAY_SIZE(amdgpu_dither_enum_list);
 656         adev->mode_info.dither_property =
 657                 drm_property_create_enum(adev->ddev, 0,
 658                                          "dither",
 659                                          amdgpu_dither_enum_list, sz);
 660
 661         if (amdgpu_device_has_dc_support(adev)) {
 662                 adev->mode_info.abm_level_property =
 663                         drm_property_create_range(adev->ddev, 0,
 664                                                 "abm level", 0, 4);
 665                 if (!adev->mode_info.abm_level_property)
 666                         return -ENOMEM;
 667         }
 668
 669         return 0;
 670 }
 671
 672 void amdgpu_display_update_priority(struct amdgpu_device *adev)
 673 {
 674         /* adjustment options for the display watermarks */
 675         if ((amdgpu_disp_priority == 0) || (amdgpu_disp_priority > 2))
 676                 adev->mode_info.disp_priority = 0;
 677         else
 678                 adev->mode_info.disp_priority = amdgpu_disp_priority;
 679
 680 }
 681
 682 static bool amdgpu_display_is_hdtv_mode(const struct drm_display_mode *mode)
 683 {
 684         /* try and guess if this is a tv or a monitor */
 685         if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */
 686             (mode->vdisplay == 576) || /* 576p */
 687             (mode->vdisplay == 720) || /* 720p */
 688             (mode->vdisplay == 1080)) /* 1080p */
 689                 return true;
 690         else
 691                 return false;
 692 }
 693
 694 bool amdgpu_display_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
 695                                         const struct drm_display_mode *mode,
 696                                         struct drm_display_mode *adjusted_mode)
 697 {
 698         struct drm_device *dev = crtc->dev;
 699         struct drm_encoder *encoder;
 700         struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 701         struct amdgpu_encoder *amdgpu_encoder;
 702         struct drm_connector *connector;
 703         u32 src_v = 1, dst_v = 1;
 704         u32 src_h = 1, dst_h = 1;
 705
 706         amdgpu_crtc->h_border = 0;
 707         amdgpu_crtc->v_border = 0;
 708
 709         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 710                 if (encoder->crtc != crtc)
 711                         continue;
 712                 amdgpu_encoder = to_amdgpu_encoder(encoder);
 713                 connector = amdgpu_get_connector_for_encoder(encoder);
 714
 715                 /* set scaling */
 716                 if (amdgpu_encoder->rmx_type == RMX_OFF)
 717                         amdgpu_crtc->rmx_type = RMX_OFF;
 718                 else if (mode->hdisplay < amdgpu_encoder->native_mode.hdisplay ||
 719                          mode->vdisplay < amdgpu_encoder->native_mode.vdisplay)
 720                         amdgpu_crtc->rmx_type = amdgpu_encoder->rmx_type;
 721                 else
 722                         amdgpu_crtc->rmx_type = RMX_OFF;
 723                 /* copy native mode */
 724                 memcpy(&amdgpu_crtc->native_mode,
 725                        &amdgpu_encoder->native_mode,
 726                        sizeof(struct drm_display_mode));
 727                 src_v = crtc->mode.vdisplay;
 728                 dst_v = amdgpu_crtc->native_mode.vdisplay;
 729                 src_h = crtc->mode.hdisplay;
 730                 dst_h = amdgpu_crtc->native_mode.hdisplay;
 731
 732                 /* fix up for overscan on hdmi */
 733                 if ((!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
 734                     ((amdgpu_encoder->underscan_type == UNDERSCAN_ON) ||
 735                      ((amdgpu_encoder->underscan_type == UNDERSCAN_AUTO) &&
 736                       drm_detect_hdmi_monitor(amdgpu_connector_edid(connector)) &&
 737                       amdgpu_display_is_hdtv_mode(mode)))) {
 738                         if (amdgpu_encoder->underscan_hborder != 0)
 739                                 amdgpu_crtc->h_border = amdgpu_encoder->underscan_hborder;
 740                         else
 741                                 amdgpu_crtc->h_border = (mode->hdisplay >> 5) + 16;
 742                         if (amdgpu_encoder->underscan_vborder != 0)
 743                                 amdgpu_crtc->v_border = amdgpu_encoder->underscan_vborder;
 744                         else
 745                                 amdgpu_crtc->v_border = (mode->vdisplay >> 5) + 16;
 746                         amdgpu_crtc->rmx_type = RMX_FULL;
 747                         src_v = crtc->mode.vdisplay;
 748                         dst_v = crtc->mode.vdisplay - (amdgpu_crtc->v_border * 2);
 749                         src_h = crtc->mode.hdisplay;
 750                         dst_h = crtc->mode.hdisplay - (amdgpu_crtc->h_border * 2);
 751                 }
 752         }
 753         if (amdgpu_crtc->rmx_type != RMX_OFF) {
 754                 fixed20_12 a, b;
 755                 a.full = dfixed_const(src_v);
 756                 b.full = dfixed_const(dst_v);
 757                 amdgpu_crtc->vsc.full = dfixed_div(a, b);
 758                 a.full = dfixed_const(src_h);
 759                 b.full = dfixed_const(dst_h);
 760                 amdgpu_crtc->hsc.full = dfixed_div(a, b);
 761         } else {
 762                 amdgpu_crtc->vsc.full = dfixed_const(1);
 763                 amdgpu_crtc->hsc.full = dfixed_const(1);
 764         }
 765         return true;
 766 }
 767
 768 /*
 769  * Retrieve current video scanout position of crtc on a given gpu, and
 770  * an optional accurate timestamp of when query happened.
 771  *
 772  * \param dev Device to query.
 773  * \param pipe Crtc to query.
 774  * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0).
 775  *              For driver internal use only also supports these flags:
 776  *
 777  *              USE_REAL_VBLANKSTART to use the real start of vblank instead
 778  *              of a fudged earlier start of vblank.
 779  *
 780  *              GET_DISTANCE_TO_VBLANKSTART to return distance to the
 781  *              fudged earlier start of vblank in *vpos and the distance
 782  *              to true start of vblank in *hpos.
 783  *
 784  * \param *vpos Location where vertical scanout position should be stored.
 785  * \param *hpos Location where horizontal scanout position should go.
 786  * \param *stime Target location for timestamp taken immediately before
 787  *               scanout position query. Can be NULL to skip timestamp.
 788  * \param *etime Target location for timestamp taken immediately after
 789  *               scanout position query. Can be NULL to skip timestamp.
 790  *
 791  * Returns vpos as a positive number while in active scanout area.
 792  * Returns vpos as a negative number inside vblank, counting the number
 793  * of scanlines to go until end of vblank, e.g., -1 means "one scanline
 794  * until start of active scanout / end of vblank."
 795  *
 796  * \return Flags, or'ed together as follows:
 797  *
 798  * DRM_SCANOUTPOS_VALID = Query successful.
 799  * DRM_SCANOUTPOS_INVBL = Inside vblank.
 800  * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
 801  * this flag means that returned position may be offset by a constant but
 802  * unknown small number of scanlines wrt. real scanout position.
 803  *
 804  */
 805 int amdgpu_display_get_crtc_scanoutpos(struct drm_device *dev,
 806                         unsigned int pipe, unsigned int flags, int *vpos,
 807                         int *hpos, ktime_t *stime, ktime_t *etime,
 808                         const struct drm_display_mode *mode)
 809 {
 810         u32 vbl = 0, position = 0;
 811         int vbl_start, vbl_end, vtotal, ret = 0;
 812         bool in_vbl = true;
 813
 814         struct amdgpu_device *adev = dev->dev_private;
 815
 816         /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
 817
 818         /* Get optional system timestamp before query. */
 819         if (stime)
 820                 *stime = ktime_get();
 821
 822         if (amdgpu_display_page_flip_get_scanoutpos(adev, pipe, &vbl, &position) == 0)
 823                 ret |= DRM_SCANOUTPOS_VALID;
 824
 825         /* Get optional system timestamp after query. */
 826         if (etime)
 827                 *etime = ktime_get();
 828
 829         /* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
 830
 831         /* Decode into vertical and horizontal scanout position. */
 832         *vpos = position & 0x1fff;
 833         *hpos = (position >> 16) & 0x1fff;
 834
 835         /* Valid vblank area boundaries from gpu retrieved? */
 836         if (vbl > 0) {
 837                 /* Yes: Decode. */
 838                 ret |= DRM_SCANOUTPOS_ACCURATE;
 839                 vbl_start = vbl & 0x1fff;
 840                 vbl_end = (vbl >> 16) & 0x1fff;
 841         }
 842         else {
 843                 /* No: Fake something reasonable which gives at least ok results. */
 844                 vbl_start = mode->crtc_vdisplay;
 845                 vbl_end = 0;
 846         }
 847
 848         /* Called from driver internal vblank counter query code? */
 849         if (flags & GET_DISTANCE_TO_VBLANKSTART) {
 850             /* Caller wants distance from real vbl_start in *hpos */
 851             *hpos = *vpos - vbl_start;
 852         }
 853
 854         /* Fudge vblank to start a few scanlines earlier to handle the
 855          * problem that vblank irqs fire a few scanlines before start
 856          * of vblank. Some driver internal callers need the true vblank
 857          * start to be used and signal this via the USE_REAL_VBLANKSTART flag.
 858          *
 859          * The cause of the "early" vblank irq is that the irq is triggered
 860          * by the line buffer logic when the line buffer read position enters
 861          * the vblank, whereas our crtc scanout position naturally lags the
 862          * line buffer read position.
 863          */
 864         if (!(flags & USE_REAL_VBLANKSTART))
 865                 vbl_start -= adev->mode_info.crtcs[pipe]->lb_vblank_lead_lines;
 866
 867         /* Test scanout position against vblank region. */
 868         if ((*vpos < vbl_start) && (*vpos >= vbl_end))
 869                 in_vbl = false;
 870
 871         /* In vblank? */
 872         if (in_vbl)
 873             ret |= DRM_SCANOUTPOS_IN_VBLANK;
 874
 875         /* Called from driver internal vblank counter query code? */
 876         if (flags & GET_DISTANCE_TO_VBLANKSTART) {
 877                 /* Caller wants distance from fudged earlier vbl_start */
 878                 *vpos -= vbl_start;
 879                 return ret;
 880         }
 881
 882         /* Check if inside vblank area and apply corrective offsets:
 883          * vpos will then be >=0 in video scanout area, but negative
 884          * within vblank area, counting down the number of lines until
 885          * start of scanout.
 886          */
 887
 888         /* Inside "upper part" of vblank area? Apply corrective offset if so: */
 889         if (in_vbl && (*vpos >= vbl_start)) {
 890                 vtotal = mode->crtc_vtotal;
 891
 892                 /* With variable refresh rate displays the vpos can exceed
 893                  * the vtotal value. Clamp to 0 to return -vbl_end instead
 894                  * of guessing the remaining number of lines until scanout.
 895                  */
 896                 *vpos = (*vpos < vtotal) ? (*vpos - vtotal) : 0;
 897         }
 898
 899         /* Correct for shifted end of vbl at vbl_end. */
 900         *vpos = *vpos - vbl_end;
 901
 902         return ret;
 903 }
 904
 905 int amdgpu_display_crtc_idx_to_irq_type(struct amdgpu_device *adev, int crtc)
 906 {
 907         if (crtc < 0 || crtc >= adev->mode_info.num_crtc)
 908                 return AMDGPU_CRTC_IRQ_NONE;
 909
 910         switch (crtc) {
 911         case 0:
 912                 return AMDGPU_CRTC_IRQ_VBLANK1;
 913         case 1:
 914                 return AMDGPU_CRTC_IRQ_VBLANK2;
 915         case 2:
 916                 return AMDGPU_CRTC_IRQ_VBLANK3;
 917         case 3:
 918                 return AMDGPU_CRTC_IRQ_VBLANK4;
 919         case 4:
 920                 return AMDGPU_CRTC_IRQ_VBLANK5;
 921         case 5:
 922                 return AMDGPU_CRTC_IRQ_VBLANK6;
 923         default:
 924                 return AMDGPU_CRTC_IRQ_NONE;
 925         }
 926 }
 927
 928 bool amdgpu_crtc_get_scanout_position(struct drm_crtc *crtc,
 929                         bool in_vblank_irq, int *vpos,
 930                         int *hpos, ktime_t *stime, ktime_t *etime,
 931                         const struct drm_display_mode *mode)
 932 {
 933         struct drm_device *dev = crtc->dev;
 934         unsigned int pipe = crtc->index;
 935
 936         return amdgpu_display_get_crtc_scanoutpos(dev, pipe, 0, vpos, hpos,
 937                                                   stime, etime, mode);
 938 }