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(adev->ddev, amdgpu_crtc->crtc_id)) > 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(dev, work->crtc_id);
 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         uint32_t devices;
 374         int i = 0;
 375
 376         DRM_INFO("AMDGPU Display Connectors\n");
 377         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 378                 amdgpu_connector = to_amdgpu_connector(connector);
 379                 DRM_INFO("Connector %d:\n", i);
 380                 DRM_INFO("  %s\n", connector->name);
 381                 if (amdgpu_connector->hpd.hpd != AMDGPU_HPD_NONE)
 382                         DRM_INFO("  %s\n", hpd_names[amdgpu_connector->hpd.hpd]);
 383                 if (amdgpu_connector->ddc_bus) {
 384                         DRM_INFO("  DDC: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
 385                                  amdgpu_connector->ddc_bus->rec.mask_clk_reg,
 386                                  amdgpu_connector->ddc_bus->rec.mask_data_reg,
 387                                  amdgpu_connector->ddc_bus->rec.a_clk_reg,
 388                                  amdgpu_connector->ddc_bus->rec.a_data_reg,
 389                                  amdgpu_connector->ddc_bus->rec.en_clk_reg,
 390                                  amdgpu_connector->ddc_bus->rec.en_data_reg,
 391                                  amdgpu_connector->ddc_bus->rec.y_clk_reg,
 392                                  amdgpu_connector->ddc_bus->rec.y_data_reg);
 393                         if (amdgpu_connector->router.ddc_valid)
 394                                 DRM_INFO("  DDC Router 0x%x/0x%x\n",
 395                                          amdgpu_connector->router.ddc_mux_control_pin,
 396                                          amdgpu_connector->router.ddc_mux_state);
 397                         if (amdgpu_connector->router.cd_valid)
 398                                 DRM_INFO("  Clock/Data Router 0x%x/0x%x\n",
 399                                          amdgpu_connector->router.cd_mux_control_pin,
 400                                          amdgpu_connector->router.cd_mux_state);
 401                 } else {
 402                         if (connector->connector_type == DRM_MODE_CONNECTOR_VGA ||
 403                             connector->connector_type == DRM_MODE_CONNECTOR_DVII ||
 404                             connector->connector_type == DRM_MODE_CONNECTOR_DVID ||
 405                             connector->connector_type == DRM_MODE_CONNECTOR_DVIA ||
 406                             connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
 407                             connector->connector_type == DRM_MODE_CONNECTOR_HDMIB)
 408                                 DRM_INFO("  DDC: no ddc bus - possible BIOS bug - please report to xorg-driver-ati@lists.x.org\n");
 409                 }
 410                 DRM_INFO("  Encoders:\n");
 411                 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 412                         amdgpu_encoder = to_amdgpu_encoder(encoder);
 413                         devices = amdgpu_encoder->devices & amdgpu_connector->devices;
 414                         if (devices) {
 415                                 if (devices & ATOM_DEVICE_CRT1_SUPPORT)
 416                                         DRM_INFO("    CRT1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 417                                 if (devices & ATOM_DEVICE_CRT2_SUPPORT)
 418                                         DRM_INFO("    CRT2: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 419                                 if (devices & ATOM_DEVICE_LCD1_SUPPORT)
 420                                         DRM_INFO("    LCD1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 421                                 if (devices & ATOM_DEVICE_DFP1_SUPPORT)
 422                                         DRM_INFO("    DFP1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 423                                 if (devices & ATOM_DEVICE_DFP2_SUPPORT)
 424                                         DRM_INFO("    DFP2: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 425                                 if (devices & ATOM_DEVICE_DFP3_SUPPORT)
 426                                         DRM_INFO("    DFP3: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 427                                 if (devices & ATOM_DEVICE_DFP4_SUPPORT)
 428                                         DRM_INFO("    DFP4: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 429                                 if (devices & ATOM_DEVICE_DFP5_SUPPORT)
 430                                         DRM_INFO("    DFP5: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 431                                 if (devices & ATOM_DEVICE_DFP6_SUPPORT)
 432                                         DRM_INFO("    DFP6: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 433                                 if (devices & ATOM_DEVICE_TV1_SUPPORT)
 434                                         DRM_INFO("    TV1: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 435                                 if (devices & ATOM_DEVICE_CV_SUPPORT)
 436                                         DRM_INFO("    CV: %s\n", encoder_names[amdgpu_encoder->encoder_id]);
 437                         }
 438                 }
 439                 i++;
 440         }
 441 }
 442
 443 /**
 444  * amdgpu_display_ddc_probe
 445  *
 446  */
 447 bool amdgpu_display_ddc_probe(struct amdgpu_connector *amdgpu_connector,
 448                               bool use_aux)
 449 {
 450         u8 out = 0x0;
 451         u8 buf[8];
 452         int ret;
 453         struct i2c_msg msgs[] = {
 454                 {
 455                         .addr = DDC_ADDR,
 456                         .flags = 0,
 457                         .len = 1,
 458                         .buf = &out,
 459                 },
 460                 {
 461                         .addr = DDC_ADDR,
 462                         .flags = I2C_M_RD,
 463                         .len = 8,
 464                         .buf = buf,
 465                 }
 466         };
 467
 468         /* on hw with routers, select right port */
 469         if (amdgpu_connector->router.ddc_valid)
 470                 amdgpu_i2c_router_select_ddc_port(amdgpu_connector);
 471
 472         if (use_aux) {
 473                 ret = i2c_transfer(&amdgpu_connector->ddc_bus->aux.ddc, msgs, 2);
 474         } else {
 475                 ret = i2c_transfer(&amdgpu_connector->ddc_bus->adapter, msgs, 2);
 476         }
 477
 478         if (ret != 2)
 479                 /* Couldn't find an accessible DDC on this connector */
 480                 return false;
 481         /* Probe also for valid EDID header
 482          * EDID header starts with:
 483          * 0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00.
 484          * Only the first 6 bytes must be valid as
 485          * drm_edid_block_valid() can fix the last 2 bytes */
 486         if (drm_edid_header_is_valid(buf) < 6) {
 487                 /* Couldn't find an accessible EDID on this
 488                  * connector */
 489                 return false;
 490         }
 491         return true;
 492 }
 493
 494 static const struct drm_framebuffer_funcs amdgpu_fb_funcs = {
 495         .destroy = drm_gem_fb_destroy,
 496         .create_handle = drm_gem_fb_create_handle,
 497 };
 498
 499 uint32_t amdgpu_display_supported_domains(struct amdgpu_device *adev,
 500                                           uint64_t bo_flags)
 501 {
 502         uint32_t domain = AMDGPU_GEM_DOMAIN_VRAM;
 503
 504 #if defined(CONFIG_DRM_AMD_DC)
 505         /*
 506          * if amdgpu_bo_support_uswc returns false it means that USWC mappings
 507          * is not supported for this board. But this mapping is required
 508          * to avoid hang caused by placement of scanout BO in GTT on certain
 509          * APUs. So force the BO placement to VRAM in case this architecture
 510          * will not allow USWC mappings.
 511          * Also, don't allow GTT domain if the BO doens't have USWC falg set.
 512          */
 513         if (adev->asic_type >= CHIP_CARRIZO &&
 514             adev->asic_type < CHIP_RAVEN &&
 515             (adev->flags & AMD_IS_APU) &&
 516             (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                 domain |= AMDGPU_GEM_DOMAIN_GTT;
 520 #endif
 521
 522         return domain;
 523 }
 524
 525 int amdgpu_display_framebuffer_init(struct drm_device *dev,
 526                                     struct amdgpu_framebuffer *rfb,
 527                                     const struct drm_mode_fb_cmd2 *mode_cmd,
 528                                     struct drm_gem_object *obj)
 529 {
 530         int ret;
 531         rfb->base.obj[0] = obj;
 532         drm_helper_mode_fill_fb_struct(dev, &rfb->base, mode_cmd);
 533         ret = drm_framebuffer_init(dev, &rfb->base, &amdgpu_fb_funcs);
 534         if (ret) {
 535                 rfb->base.obj[0] = NULL;
 536                 return ret;
 537         }
 538         return 0;
 539 }
 540
 541 struct drm_framebuffer *
 542 amdgpu_display_user_framebuffer_create(struct drm_device *dev,
 543                                        struct drm_file *file_priv,
 544                                        const struct drm_mode_fb_cmd2 *mode_cmd)
 545 {
 546         struct drm_gem_object *obj;
 547         struct amdgpu_framebuffer *amdgpu_fb;
 548         int ret;
 549
 550         obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
 551         if (obj ==  NULL) {
 552                 dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, "
 553                         "can't create framebuffer\n", mode_cmd->handles[0]);
 554                 return ERR_PTR(-ENOENT);
 555         }
 556
 557         /* Handle is imported dma-buf, so cannot be migrated to VRAM for scanout */
 558         if (obj->import_attach) {
 559                 DRM_DEBUG_KMS("Cannot create framebuffer from imported dma_buf\n");
 560                 return ERR_PTR(-EINVAL);
 561         }
 562
 563         amdgpu_fb = kzalloc(sizeof(*amdgpu_fb), GFP_KERNEL);
 564         if (amdgpu_fb == NULL) {
 565                 drm_gem_object_put_unlocked(obj);
 566                 return ERR_PTR(-ENOMEM);
 567         }
 568
 569         ret = amdgpu_display_framebuffer_init(dev, amdgpu_fb, mode_cmd, obj);
 570         if (ret) {
 571                 kfree(amdgpu_fb);
 572                 drm_gem_object_put_unlocked(obj);
 573                 return ERR_PTR(ret);
 574         }
 575
 576         return &amdgpu_fb->base;
 577 }
 578
 579 const struct drm_mode_config_funcs amdgpu_mode_funcs = {
 580         .fb_create = amdgpu_display_user_framebuffer_create,
 581         .output_poll_changed = drm_fb_helper_output_poll_changed,
 582 };
 583
 584 static const struct drm_prop_enum_list amdgpu_underscan_enum_list[] =
 585 {       { UNDERSCAN_OFF, "off" },
 586         { UNDERSCAN_ON, "on" },
 587         { UNDERSCAN_AUTO, "auto" },
 588 };
 589
 590 static const struct drm_prop_enum_list amdgpu_audio_enum_list[] =
 591 {       { AMDGPU_AUDIO_DISABLE, "off" },
 592         { AMDGPU_AUDIO_ENABLE, "on" },
 593         { AMDGPU_AUDIO_AUTO, "auto" },
 594 };
 595
 596 /* XXX support different dither options? spatial, temporal, both, etc. */
 597 static const struct drm_prop_enum_list amdgpu_dither_enum_list[] =
 598 {       { AMDGPU_FMT_DITHER_DISABLE, "off" },
 599         { AMDGPU_FMT_DITHER_ENABLE, "on" },
 600 };
 601
 602 int amdgpu_display_modeset_create_props(struct amdgpu_device *adev)
 603 {
 604         int sz;
 605
 606         adev->mode_info.coherent_mode_property =
 607                 drm_property_create_range(adev->ddev, 0 , "coherent", 0, 1);
 608         if (!adev->mode_info.coherent_mode_property)
 609                 return -ENOMEM;
 610
 611         adev->mode_info.load_detect_property =
 612                 drm_property_create_range(adev->ddev, 0, "load detection", 0, 1);
 613         if (!adev->mode_info.load_detect_property)
 614                 return -ENOMEM;
 615
 616         drm_mode_create_scaling_mode_property(adev->ddev);
 617
 618         sz = ARRAY_SIZE(amdgpu_underscan_enum_list);
 619         adev->mode_info.underscan_property =
 620                 drm_property_create_enum(adev->ddev, 0,
 621                                     "underscan",
 622                                     amdgpu_underscan_enum_list, sz);
 623
 624         adev->mode_info.underscan_hborder_property =
 625                 drm_property_create_range(adev->ddev, 0,
 626                                         "underscan hborder", 0, 128);
 627         if (!adev->mode_info.underscan_hborder_property)
 628                 return -ENOMEM;
 629
 630         adev->mode_info.underscan_vborder_property =
 631                 drm_property_create_range(adev->ddev, 0,
 632                                         "underscan vborder", 0, 128);
 633         if (!adev->mode_info.underscan_vborder_property)
 634                 return -ENOMEM;
 635
 636         sz = ARRAY_SIZE(amdgpu_audio_enum_list);
 637         adev->mode_info.audio_property =
 638                 drm_property_create_enum(adev->ddev, 0,
 639                                          "audio",
 640                                          amdgpu_audio_enum_list, sz);
 641
 642         sz = ARRAY_SIZE(amdgpu_dither_enum_list);
 643         adev->mode_info.dither_property =
 644                 drm_property_create_enum(adev->ddev, 0,
 645                                          "dither",
 646                                          amdgpu_dither_enum_list, sz);
 647
 648         if (amdgpu_device_has_dc_support(adev)) {
 649                 adev->mode_info.abm_level_property =
 650                         drm_property_create_range(adev->ddev, 0,
 651                                                 "abm level", 0, 4);
 652                 if (!adev->mode_info.abm_level_property)
 653                         return -ENOMEM;
 654         }
 655
 656         return 0;
 657 }
 658
 659 void amdgpu_display_update_priority(struct amdgpu_device *adev)
 660 {
 661         /* adjustment options for the display watermarks */
 662         if ((amdgpu_disp_priority == 0) || (amdgpu_disp_priority > 2))
 663                 adev->mode_info.disp_priority = 0;
 664         else
 665                 adev->mode_info.disp_priority = amdgpu_disp_priority;
 666
 667 }
 668
 669 static bool amdgpu_display_is_hdtv_mode(const struct drm_display_mode *mode)
 670 {
 671         /* try and guess if this is a tv or a monitor */
 672         if ((mode->vdisplay == 480 && mode->hdisplay == 720) || /* 480p */
 673             (mode->vdisplay == 576) || /* 576p */
 674             (mode->vdisplay == 720) || /* 720p */
 675             (mode->vdisplay == 1080)) /* 1080p */
 676                 return true;
 677         else
 678                 return false;
 679 }
 680
 681 bool amdgpu_display_crtc_scaling_mode_fixup(struct drm_crtc *crtc,
 682                                         const struct drm_display_mode *mode,
 683                                         struct drm_display_mode *adjusted_mode)
 684 {
 685         struct drm_device *dev = crtc->dev;
 686         struct drm_encoder *encoder;
 687         struct amdgpu_crtc *amdgpu_crtc = to_amdgpu_crtc(crtc);
 688         struct amdgpu_encoder *amdgpu_encoder;
 689         struct drm_connector *connector;
 690         struct amdgpu_connector *amdgpu_connector;
 691         u32 src_v = 1, dst_v = 1;
 692         u32 src_h = 1, dst_h = 1;
 693
 694         amdgpu_crtc->h_border = 0;
 695         amdgpu_crtc->v_border = 0;
 696
 697         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 698                 if (encoder->crtc != crtc)
 699                         continue;
 700                 amdgpu_encoder = to_amdgpu_encoder(encoder);
 701                 connector = amdgpu_get_connector_for_encoder(encoder);
 702                 amdgpu_connector = to_amdgpu_connector(connector);
 703
 704                 /* set scaling */
 705                 if (amdgpu_encoder->rmx_type == RMX_OFF)
 706                         amdgpu_crtc->rmx_type = RMX_OFF;
 707                 else if (mode->hdisplay < amdgpu_encoder->native_mode.hdisplay ||
 708                          mode->vdisplay < amdgpu_encoder->native_mode.vdisplay)
 709                         amdgpu_crtc->rmx_type = amdgpu_encoder->rmx_type;
 710                 else
 711                         amdgpu_crtc->rmx_type = RMX_OFF;
 712                 /* copy native mode */
 713                 memcpy(&amdgpu_crtc->native_mode,
 714                        &amdgpu_encoder->native_mode,
 715                        sizeof(struct drm_display_mode));
 716                 src_v = crtc->mode.vdisplay;
 717                 dst_v = amdgpu_crtc->native_mode.vdisplay;
 718                 src_h = crtc->mode.hdisplay;
 719                 dst_h = amdgpu_crtc->native_mode.hdisplay;
 720
 721                 /* fix up for overscan on hdmi */
 722                 if ((!(mode->flags & DRM_MODE_FLAG_INTERLACE)) &&
 723                     ((amdgpu_encoder->underscan_type == UNDERSCAN_ON) ||
 724                      ((amdgpu_encoder->underscan_type == UNDERSCAN_AUTO) &&
 725                       drm_detect_hdmi_monitor(amdgpu_connector_edid(connector)) &&
 726                       amdgpu_display_is_hdtv_mode(mode)))) {
 727                         if (amdgpu_encoder->underscan_hborder != 0)
 728                                 amdgpu_crtc->h_border = amdgpu_encoder->underscan_hborder;
 729                         else
 730                                 amdgpu_crtc->h_border = (mode->hdisplay >> 5) + 16;
 731                         if (amdgpu_encoder->underscan_vborder != 0)
 732                                 amdgpu_crtc->v_border = amdgpu_encoder->underscan_vborder;
 733                         else
 734                                 amdgpu_crtc->v_border = (mode->vdisplay >> 5) + 16;
 735                         amdgpu_crtc->rmx_type = RMX_FULL;
 736                         src_v = crtc->mode.vdisplay;
 737                         dst_v = crtc->mode.vdisplay - (amdgpu_crtc->v_border * 2);
 738                         src_h = crtc->mode.hdisplay;
 739                         dst_h = crtc->mode.hdisplay - (amdgpu_crtc->h_border * 2);
 740                 }
 741         }
 742         if (amdgpu_crtc->rmx_type != RMX_OFF) {
 743                 fixed20_12 a, b;
 744                 a.full = dfixed_const(src_v);
 745                 b.full = dfixed_const(dst_v);
 746                 amdgpu_crtc->vsc.full = dfixed_div(a, b);
 747                 a.full = dfixed_const(src_h);
 748                 b.full = dfixed_const(dst_h);
 749                 amdgpu_crtc->hsc.full = dfixed_div(a, b);
 750         } else {
 751                 amdgpu_crtc->vsc.full = dfixed_const(1);
 752                 amdgpu_crtc->hsc.full = dfixed_const(1);
 753         }
 754         return true;
 755 }
 756
 757 /*
 758  * Retrieve current video scanout position of crtc on a given gpu, and
 759  * an optional accurate timestamp of when query happened.
 760  *
 761  * \param dev Device to query.
 762  * \param pipe Crtc to query.
 763  * \param flags Flags from caller (DRM_CALLED_FROM_VBLIRQ or 0).
 764  *              For driver internal use only also supports these flags:
 765  *
 766  *              USE_REAL_VBLANKSTART to use the real start of vblank instead
 767  *              of a fudged earlier start of vblank.
 768  *
 769  *              GET_DISTANCE_TO_VBLANKSTART to return distance to the
 770  *              fudged earlier start of vblank in *vpos and the distance
 771  *              to true start of vblank in *hpos.
 772  *
 773  * \param *vpos Location where vertical scanout position should be stored.
 774  * \param *hpos Location where horizontal scanout position should go.
 775  * \param *stime Target location for timestamp taken immediately before
 776  *               scanout position query. Can be NULL to skip timestamp.
 777  * \param *etime Target location for timestamp taken immediately after
 778  *               scanout position query. Can be NULL to skip timestamp.
 779  *
 780  * Returns vpos as a positive number while in active scanout area.
 781  * Returns vpos as a negative number inside vblank, counting the number
 782  * of scanlines to go until end of vblank, e.g., -1 means "one scanline
 783  * until start of active scanout / end of vblank."
 784  *
 785  * \return Flags, or'ed together as follows:
 786  *
 787  * DRM_SCANOUTPOS_VALID = Query successful.
 788  * DRM_SCANOUTPOS_INVBL = Inside vblank.
 789  * DRM_SCANOUTPOS_ACCURATE = Returned position is accurate. A lack of
 790  * this flag means that returned position may be offset by a constant but
 791  * unknown small number of scanlines wrt. real scanout position.
 792  *
 793  */
 794 int amdgpu_display_get_crtc_scanoutpos(struct drm_device *dev,
 795                         unsigned int pipe, unsigned int flags, int *vpos,
 796                         int *hpos, ktime_t *stime, ktime_t *etime,
 797                         const struct drm_display_mode *mode)
 798 {
 799         u32 vbl = 0, position = 0;
 800         int vbl_start, vbl_end, vtotal, ret = 0;
 801         bool in_vbl = true;
 802
 803         struct amdgpu_device *adev = dev->dev_private;
 804
 805         /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
 806
 807         /* Get optional system timestamp before query. */
 808         if (stime)
 809                 *stime = ktime_get();
 810
 811         if (amdgpu_display_page_flip_get_scanoutpos(adev, pipe, &vbl, &position) == 0)
 812                 ret |= DRM_SCANOUTPOS_VALID;
 813
 814         /* Get optional system timestamp after query. */
 815         if (etime)
 816                 *etime = ktime_get();
 817
 818         /* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
 819
 820         /* Decode into vertical and horizontal scanout position. */
 821         *vpos = position & 0x1fff;
 822         *hpos = (position >> 16) & 0x1fff;
 823
 824         /* Valid vblank area boundaries from gpu retrieved? */
 825         if (vbl > 0) {
 826                 /* Yes: Decode. */
 827                 ret |= DRM_SCANOUTPOS_ACCURATE;
 828                 vbl_start = vbl & 0x1fff;
 829                 vbl_end = (vbl >> 16) & 0x1fff;
 830         }
 831         else {
 832                 /* No: Fake something reasonable which gives at least ok results. */
 833                 vbl_start = mode->crtc_vdisplay;
 834                 vbl_end = 0;
 835         }
 836
 837         /* Called from driver internal vblank counter query code? */
 838         if (flags & GET_DISTANCE_TO_VBLANKSTART) {
 839             /* Caller wants distance from real vbl_start in *hpos */
 840             *hpos = *vpos - vbl_start;
 841         }
 842
 843         /* Fudge vblank to start a few scanlines earlier to handle the
 844          * problem that vblank irqs fire a few scanlines before start
 845          * of vblank. Some driver internal callers need the true vblank
 846          * start to be used and signal this via the USE_REAL_VBLANKSTART flag.
 847          *
 848          * The cause of the "early" vblank irq is that the irq is triggered
 849          * by the line buffer logic when the line buffer read position enters
 850          * the vblank, whereas our crtc scanout position naturally lags the
 851          * line buffer read position.
 852          */
 853         if (!(flags & USE_REAL_VBLANKSTART))
 854                 vbl_start -= adev->mode_info.crtcs[pipe]->lb_vblank_lead_lines;
 855
 856         /* Test scanout position against vblank region. */
 857         if ((*vpos < vbl_start) && (*vpos >= vbl_end))
 858                 in_vbl = false;
 859
 860         /* In vblank? */
 861         if (in_vbl)
 862             ret |= DRM_SCANOUTPOS_IN_VBLANK;
 863
 864         /* Called from driver internal vblank counter query code? */
 865         if (flags & GET_DISTANCE_TO_VBLANKSTART) {
 866                 /* Caller wants distance from fudged earlier vbl_start */
 867                 *vpos -= vbl_start;
 868                 return ret;
 869         }
 870
 871         /* Check if inside vblank area and apply corrective offsets:
 872          * vpos will then be >=0 in video scanout area, but negative
 873          * within vblank area, counting down the number of lines until
 874          * start of scanout.
 875          */
 876
 877         /* Inside "upper part" of vblank area? Apply corrective offset if so: */
 878         if (in_vbl && (*vpos >= vbl_start)) {
 879                 vtotal = mode->crtc_vtotal;
 880
 881                 /* With variable refresh rate displays the vpos can exceed
 882                  * the vtotal value. Clamp to 0 to return -vbl_end instead
 883                  * of guessing the remaining number of lines until scanout.
 884                  */
 885                 *vpos = (*vpos < vtotal) ? (*vpos - vtotal) : 0;
 886         }
 887
 888         /* Correct for shifted end of vbl at vbl_end. */
 889         *vpos = *vpos - vbl_end;
 890
 891         return ret;
 892 }
 893
 894 int amdgpu_display_crtc_idx_to_irq_type(struct amdgpu_device *adev, int crtc)
 895 {
 896         if (crtc < 0 || crtc >= adev->mode_info.num_crtc)
 897                 return AMDGPU_CRTC_IRQ_NONE;
 898
 899         switch (crtc) {
 900         case 0:
 901                 return AMDGPU_CRTC_IRQ_VBLANK1;
 902         case 1:
 903                 return AMDGPU_CRTC_IRQ_VBLANK2;
 904         case 2:
 905                 return AMDGPU_CRTC_IRQ_VBLANK3;
 906         case 3:
 907                 return AMDGPU_CRTC_IRQ_VBLANK4;
 908         case 4:
 909                 return AMDGPU_CRTC_IRQ_VBLANK5;
 910         case 5:
 911                 return AMDGPU_CRTC_IRQ_VBLANK6;
 912         default:
 913                 return AMDGPU_CRTC_IRQ_NONE;
 914         }
 915 }