drivers/gpu/drm/radeon/radeon_kms.c

   1 /*
   2  * Copyright 2008 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  * Copyright 2009 Jerome Glisse.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors: Dave Airlie
  25  *          Alex Deucher
  26  *          Jerome Glisse
  27  */
  28 #include <drm/drmP.h>
  29 #include "radeon.h"
  30 #include <drm/radeon_drm.h>
  31 #include "radeon_asic.h"
  32
  33 #include <linux/vga_switcheroo.h>
  34 #include <linux/slab.h>
  35
  36 /**
  37  * radeon_driver_unload_kms - Main unload function for KMS.
  38  *
  39  * @dev: drm dev pointer
  40  *
  41  * This is the main unload function for KMS (all asics).
  42  * It calls radeon_modeset_fini() to tear down the
  43  * displays, and radeon_device_fini() to tear down
  44  * the rest of the device (CP, writeback, etc.).
  45  * Returns 0 on success.
  46  */
  47 int radeon_driver_unload_kms(struct drm_device *dev)
  48 {
  49         struct radeon_device *rdev = dev->dev_private;
  50
  51         if (rdev == NULL)
  52                 return 0;
  53         radeon_acpi_fini(rdev);
  54         radeon_modeset_fini(rdev);
  55         radeon_device_fini(rdev);
  56         kfree(rdev);
  57         dev->dev_private = NULL;
  58         return 0;
  59 }
  60
  61 /**
  62  * radeon_driver_load_kms - Main load function for KMS.
  63  *
  64  * @dev: drm dev pointer
  65  * @flags: device flags
  66  *
  67  * This is the main load function for KMS (all asics).
  68  * It calls radeon_device_init() to set up the non-display
  69  * parts of the chip (asic init, CP, writeback, etc.), and
  70  * radeon_modeset_init() to set up the display parts
  71  * (crtcs, encoders, hotplug detect, etc.).
  72  * Returns 0 on success, error on failure.
  73  */
  74 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
  75 {
  76         struct radeon_device *rdev;
  77         int r, acpi_status;
  78
  79         rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
  80         if (rdev == NULL) {
  81                 return -ENOMEM;
  82         }
  83         dev->dev_private = (void *)rdev;
  84
  85         /* update BUS flag */
  86         if (drm_pci_device_is_agp(dev)) {
  87                 flags |= RADEON_IS_AGP;
  88         } else if (pci_is_pcie(dev->pdev)) {
  89                 flags |= RADEON_IS_PCIE;
  90         } else {
  91                 flags |= RADEON_IS_PCI;
  92         }
  93
  94         /* radeon_device_init should report only fatal error
  95          * like memory allocation failure or iomapping failure,
  96          * or memory manager initialization failure, it must
  97          * properly initialize the GPU MC controller and permit
  98          * VRAM allocation
  99          */
 100         r = radeon_device_init(rdev, dev, dev->pdev, flags);
 101         if (r) {
 102                 dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
 103                 goto out;
 104         }
 105
 106         /* Again modeset_init should fail only on fatal error
 107          * otherwise it should provide enough functionalities
 108          * for shadowfb to run
 109          */
 110         r = radeon_modeset_init(rdev);
 111         if (r)
 112                 dev_err(&dev->pdev->dev, "Fatal error during modeset init\n");
 113
 114         /* Call ACPI methods: require modeset init
 115          * but failure is not fatal
 116          */
 117         if (!r) {
 118                 acpi_status = radeon_acpi_init(rdev);
 119                 if (acpi_status)
 120                 dev_dbg(&dev->pdev->dev,
 121                                 "Error during ACPI methods call\n");
 122         }
 123
 124 out:
 125         if (r)
 126                 radeon_driver_unload_kms(dev);
 127         return r;
 128 }
 129
 130 /**
 131  * radeon_set_filp_rights - Set filp right.
 132  *
 133  * @dev: drm dev pointer
 134  * @owner: drm file
 135  * @applier: drm file
 136  * @value: value
 137  *
 138  * Sets the filp rights for the device (all asics).
 139  */
 140 static void radeon_set_filp_rights(struct drm_device *dev,
 141                                    struct drm_file **owner,
 142                                    struct drm_file *applier,
 143                                    uint32_t *value)
 144 {
 145         mutex_lock(&dev->struct_mutex);
 146         if (*value == 1) {
 147                 /* wants rights */
 148                 if (!*owner)
 149                         *owner = applier;
 150         } else if (*value == 0) {
 151                 /* revokes rights */
 152                 if (*owner == applier)
 153                         *owner = NULL;
 154         }
 155         *value = *owner == applier ? 1 : 0;
 156         mutex_unlock(&dev->struct_mutex);
 157 }
 158
 159 /*
 160  * Userspace get information ioctl
 161  */
 162 /**
 163  * radeon_info_ioctl - answer a device specific request.
 164  *
 165  * @rdev: radeon device pointer
 166  * @data: request object
 167  * @filp: drm filp
 168  *
 169  * This function is used to pass device specific parameters to the userspace
 170  * drivers.  Examples include: pci device id, pipeline parms, tiling params,
 171  * etc. (all asics).
 172  * Returns 0 on success, -EINVAL on failure.
 173  */
 174 int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 175 {
 176         struct radeon_device *rdev = dev->dev_private;
 177         struct drm_radeon_info *info = data;
 178         struct radeon_mode_info *minfo = &rdev->mode_info;
 179         uint32_t value, *value_ptr;
 180         uint64_t value64, *value_ptr64;
 181         struct drm_crtc *crtc;
 182         int i, found;
 183
 184         /* TIMESTAMP is a 64-bit value, needs special handling. */
 185         if (info->request == RADEON_INFO_TIMESTAMP) {
 186                 if (rdev->family >= CHIP_R600) {
 187                         value_ptr64 = (uint64_t*)((unsigned long)info->value);
 188                         if (rdev->family >= CHIP_TAHITI) {
 189                                 value64 = si_get_gpu_clock(rdev);
 190                         } else {
 191                                 value64 = r600_get_gpu_clock(rdev);
 192                         }
 193
 194                         if (DRM_COPY_TO_USER(value_ptr64, &value64, sizeof(value64))) {
 195                                 DRM_ERROR("copy_to_user %s:%u\n", __func__, __LINE__);
 196                                 return -EFAULT;
 197                         }
 198                         return 0;
 199                 } else {
 200                         DRM_DEBUG_KMS("timestamp is r6xx+ only!\n");
 201                         return -EINVAL;
 202                 }
 203         }
 204
 205         value_ptr = (uint32_t *)((unsigned long)info->value);
 206         if (DRM_COPY_FROM_USER(&value, value_ptr, sizeof(value))) {
 207                 DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 208                 return -EFAULT;
 209         }
 210
 211         switch (info->request) {
 212         case RADEON_INFO_DEVICE_ID:
 213                 value = dev->pci_device;
 214                 break;
 215         case RADEON_INFO_NUM_GB_PIPES:
 216                 value = rdev->num_gb_pipes;
 217                 break;
 218         case RADEON_INFO_NUM_Z_PIPES:
 219                 value = rdev->num_z_pipes;
 220                 break;
 221         case RADEON_INFO_ACCEL_WORKING:
 222                 /* xf86-video-ati 6.13.0 relies on this being false for evergreen */
 223                 if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK))
 224                         value = false;
 225                 else
 226                         value = rdev->accel_working;
 227                 break;
 228         case RADEON_INFO_CRTC_FROM_ID:
 229                 for (i = 0, found = 0; i < rdev->num_crtc; i++) {
 230                         crtc = (struct drm_crtc *)minfo->crtcs[i];
 231                         if (crtc && crtc->base.id == value) {
 232                                 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 233                                 value = radeon_crtc->crtc_id;
 234                                 found = 1;
 235                                 break;
 236                         }
 237                 }
 238                 if (!found) {
 239                         DRM_DEBUG_KMS("unknown crtc id %d\n", value);
 240                         return -EINVAL;
 241                 }
 242                 break;
 243         case RADEON_INFO_ACCEL_WORKING2:
 244                 value = rdev->accel_working;
 245                 break;
 246         case RADEON_INFO_TILING_CONFIG:
 247                 if (rdev->family >= CHIP_TAHITI)
 248                         value = rdev->config.si.tile_config;
 249                 else if (rdev->family >= CHIP_CAYMAN)
 250                         value = rdev->config.cayman.tile_config;
 251                 else if (rdev->family >= CHIP_CEDAR)
 252                         value = rdev->config.evergreen.tile_config;
 253                 else if (rdev->family >= CHIP_RV770)
 254                         value = rdev->config.rv770.tile_config;
 255                 else if (rdev->family >= CHIP_R600)
 256                         value = rdev->config.r600.tile_config;
 257                 else {
 258                         DRM_DEBUG_KMS("tiling config is r6xx+ only!\n");
 259                         return -EINVAL;
 260                 }
 261                 break;
 262         case RADEON_INFO_WANT_HYPERZ:
 263                 /* The "value" here is both an input and output parameter.
 264                  * If the input value is 1, filp requests hyper-z access.
 265                  * If the input value is 0, filp revokes its hyper-z access.
 266                  *
 267                  * When returning, the value is 1 if filp owns hyper-z access,
 268                  * 0 otherwise. */
 269                 if (value >= 2) {
 270                         DRM_DEBUG_KMS("WANT_HYPERZ: invalid value %d\n", value);
 271                         return -EINVAL;
 272                 }
 273                 radeon_set_filp_rights(dev, &rdev->hyperz_filp, filp, &value);
 274                 break;
 275         case RADEON_INFO_WANT_CMASK:
 276                 /* The same logic as Hyper-Z. */
 277                 if (value >= 2) {
 278                         DRM_DEBUG_KMS("WANT_CMASK: invalid value %d\n", value);
 279                         return -EINVAL;
 280                 }
 281                 radeon_set_filp_rights(dev, &rdev->cmask_filp, filp, &value);
 282                 break;
 283         case RADEON_INFO_CLOCK_CRYSTAL_FREQ:
 284                 /* return clock value in KHz */
 285                 if (rdev->asic->get_xclk)
 286                         value = radeon_get_xclk(rdev) * 10;
 287                 else
 288                         value = rdev->clock.spll.reference_freq * 10;
 289                 break;
 290         case RADEON_INFO_NUM_BACKENDS:
 291                 if (rdev->family >= CHIP_TAHITI)
 292                         value = rdev->config.si.max_backends_per_se *
 293                                 rdev->config.si.max_shader_engines;
 294                 else if (rdev->family >= CHIP_CAYMAN)
 295                         value = rdev->config.cayman.max_backends_per_se *
 296                                 rdev->config.cayman.max_shader_engines;
 297                 else if (rdev->family >= CHIP_CEDAR)
 298                         value = rdev->config.evergreen.max_backends;
 299                 else if (rdev->family >= CHIP_RV770)
 300                         value = rdev->config.rv770.max_backends;
 301                 else if (rdev->family >= CHIP_R600)
 302                         value = rdev->config.r600.max_backends;
 303                 else {
 304                         return -EINVAL;
 305                 }
 306                 break;
 307         case RADEON_INFO_NUM_TILE_PIPES:
 308                 if (rdev->family >= CHIP_TAHITI)
 309                         value = rdev->config.si.max_tile_pipes;
 310                 else if (rdev->family >= CHIP_CAYMAN)
 311                         value = rdev->config.cayman.max_tile_pipes;
 312                 else if (rdev->family >= CHIP_CEDAR)
 313                         value = rdev->config.evergreen.max_tile_pipes;
 314                 else if (rdev->family >= CHIP_RV770)
 315                         value = rdev->config.rv770.max_tile_pipes;
 316                 else if (rdev->family >= CHIP_R600)
 317                         value = rdev->config.r600.max_tile_pipes;
 318                 else {
 319                         return -EINVAL;
 320                 }
 321                 break;
 322         case RADEON_INFO_FUSION_GART_WORKING:
 323                 value = 1;
 324                 break;
 325         case RADEON_INFO_BACKEND_MAP:
 326                 if (rdev->family >= CHIP_TAHITI)
 327                         value = rdev->config.si.backend_map;
 328                 else if (rdev->family >= CHIP_CAYMAN)
 329                         value = rdev->config.cayman.backend_map;
 330                 else if (rdev->family >= CHIP_CEDAR)
 331                         value = rdev->config.evergreen.backend_map;
 332                 else if (rdev->family >= CHIP_RV770)
 333                         value = rdev->config.rv770.backend_map;
 334                 else if (rdev->family >= CHIP_R600)
 335                         value = rdev->config.r600.backend_map;
 336                 else {
 337                         return -EINVAL;
 338                 }
 339                 break;
 340         case RADEON_INFO_VA_START:
 341                 /* this is where we report if vm is supported or not */
 342                 if (rdev->family < CHIP_CAYMAN)
 343                         return -EINVAL;
 344                 value = RADEON_VA_RESERVED_SIZE;
 345                 break;
 346         case RADEON_INFO_IB_VM_MAX_SIZE:
 347                 /* this is where we report if vm is supported or not */
 348                 if (rdev->family < CHIP_CAYMAN)
 349                         return -EINVAL;
 350                 value = RADEON_IB_VM_MAX_SIZE;
 351                 break;
 352         case RADEON_INFO_MAX_PIPES:
 353                 if (rdev->family >= CHIP_TAHITI)
 354                         value = rdev->config.si.max_cu_per_sh;
 355                 else if (rdev->family >= CHIP_CAYMAN)
 356                         value = rdev->config.cayman.max_pipes_per_simd;
 357                 else if (rdev->family >= CHIP_CEDAR)
 358                         value = rdev->config.evergreen.max_pipes;
 359                 else if (rdev->family >= CHIP_RV770)
 360                         value = rdev->config.rv770.max_pipes;
 361                 else if (rdev->family >= CHIP_R600)
 362                         value = rdev->config.r600.max_pipes;
 363                 else {
 364                         return -EINVAL;
 365                 }
 366                 break;
 367         case RADEON_INFO_MAX_SE:
 368                 if (rdev->family >= CHIP_TAHITI)
 369                         value = rdev->config.si.max_shader_engines;
 370                 else if (rdev->family >= CHIP_CAYMAN)
 371                         value = rdev->config.cayman.max_shader_engines;
 372                 else if (rdev->family >= CHIP_CEDAR)
 373                         value = rdev->config.evergreen.num_ses;
 374                 else
 375                         value = 1;
 376                 break;
 377         case RADEON_INFO_MAX_SH_PER_SE:
 378                 if (rdev->family >= CHIP_TAHITI)
 379                         value = rdev->config.si.max_sh_per_se;
 380                 else
 381                         return -EINVAL;
 382                 break;
 383         default:
 384                 DRM_DEBUG_KMS("Invalid request %d\n", info->request);
 385                 return -EINVAL;
 386         }
 387         if (DRM_COPY_TO_USER(value_ptr, &value, sizeof(uint32_t))) {
 388                 DRM_ERROR("copy_to_user %s:%u\n", __func__, __LINE__);
 389                 return -EFAULT;
 390         }
 391         return 0;
 392 }
 393
 394
 395 /*
 396  * Outdated mess for old drm with Xorg being in charge (void function now).
 397  */
 398 /**
 399  * radeon_driver_firstopen_kms - drm callback for first open
 400  *
 401  * @dev: drm dev pointer
 402  *
 403  * Nothing to be done for KMS (all asics).
 404  * Returns 0 on success.
 405  */
 406 int radeon_driver_firstopen_kms(struct drm_device *dev)
 407 {
 408         return 0;
 409 }
 410
 411 /**
 412  * radeon_driver_firstopen_kms - drm callback for last close
 413  *
 414  * @dev: drm dev pointer
 415  *
 416  * Switch vga switcheroo state after last close (all asics).
 417  */
 418 void radeon_driver_lastclose_kms(struct drm_device *dev)
 419 {
 420         vga_switcheroo_process_delayed_switch();
 421 }
 422
 423 /**
 424  * radeon_driver_open_kms - drm callback for open
 425  *
 426  * @dev: drm dev pointer
 427  * @file_priv: drm file
 428  *
 429  * On device open, init vm on cayman+ (all asics).
 430  * Returns 0 on success, error on failure.
 431  */
 432 int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 433 {
 434         struct radeon_device *rdev = dev->dev_private;
 435
 436         file_priv->driver_priv = NULL;
 437
 438         /* new gpu have virtual address space support */
 439         if (rdev->family >= CHIP_CAYMAN) {
 440                 struct radeon_fpriv *fpriv;
 441                 struct radeon_bo_va *bo_va;
 442                 int r;
 443
 444                 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
 445                 if (unlikely(!fpriv)) {
 446                         return -ENOMEM;
 447                 }
 448
 449                 radeon_vm_init(rdev, &fpriv->vm);
 450
 451                 /* map the ib pool buffer read only into
 452                  * virtual address space */
 453                 bo_va = radeon_vm_bo_add(rdev, &fpriv->vm,
 454                                          rdev->ring_tmp_bo.bo);
 455                 r = radeon_vm_bo_set_addr(rdev, bo_va, RADEON_VA_IB_OFFSET,
 456                                           RADEON_VM_PAGE_READABLE |
 457                                           RADEON_VM_PAGE_SNOOPED);
 458                 if (r) {
 459                         radeon_vm_fini(rdev, &fpriv->vm);
 460                         kfree(fpriv);
 461                         return r;
 462                 }
 463
 464                 file_priv->driver_priv = fpriv;
 465         }
 466         return 0;
 467 }
 468
 469 /**
 470  * radeon_driver_postclose_kms - drm callback for post close
 471  *
 472  * @dev: drm dev pointer
 473  * @file_priv: drm file
 474  *
 475  * On device post close, tear down vm on cayman+ (all asics).
 476  */
 477 void radeon_driver_postclose_kms(struct drm_device *dev,
 478                                  struct drm_file *file_priv)
 479 {
 480         struct radeon_device *rdev = dev->dev_private;
 481
 482         /* new gpu have virtual address space support */
 483         if (rdev->family >= CHIP_CAYMAN && file_priv->driver_priv) {
 484                 struct radeon_fpriv *fpriv = file_priv->driver_priv;
 485                 struct radeon_bo_va *bo_va;
 486                 int r;
 487
 488                 r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 489                 if (!r) {
 490                         bo_va = radeon_vm_bo_find(&fpriv->vm,
 491                                                   rdev->ring_tmp_bo.bo);
 492                         if (bo_va)
 493                                 radeon_vm_bo_rmv(rdev, bo_va);
 494                         radeon_bo_unreserve(rdev->ring_tmp_bo.bo);
 495                 }
 496
 497                 radeon_vm_fini(rdev, &fpriv->vm);
 498                 kfree(fpriv);
 499                 file_priv->driver_priv = NULL;
 500         }
 501 }
 502
 503 /**
 504  * radeon_driver_preclose_kms - drm callback for pre close
 505  *
 506  * @dev: drm dev pointer
 507  * @file_priv: drm file
 508  *
 509  * On device pre close, tear down hyperz and cmask filps on r1xx-r5xx
 510  * (all asics).
 511  */
 512 void radeon_driver_preclose_kms(struct drm_device *dev,
 513                                 struct drm_file *file_priv)
 514 {
 515         struct radeon_device *rdev = dev->dev_private;
 516         if (rdev->hyperz_filp == file_priv)
 517                 rdev->hyperz_filp = NULL;
 518         if (rdev->cmask_filp == file_priv)
 519                 rdev->cmask_filp = NULL;
 520 }
 521
 522 /*
 523  * VBlank related functions.
 524  */
 525 /**
 526  * radeon_get_vblank_counter_kms - get frame count
 527  *
 528  * @dev: drm dev pointer
 529  * @crtc: crtc to get the frame count from
 530  *
 531  * Gets the frame count on the requested crtc (all asics).
 532  * Returns frame count on success, -EINVAL on failure.
 533  */
 534 u32 radeon_get_vblank_counter_kms(struct drm_device *dev, int crtc)
 535 {
 536         struct radeon_device *rdev = dev->dev_private;
 537
 538         if (crtc < 0 || crtc >= rdev->num_crtc) {
 539                 DRM_ERROR("Invalid crtc %d\n", crtc);
 540                 return -EINVAL;
 541         }
 542
 543         return radeon_get_vblank_counter(rdev, crtc);
 544 }
 545
 546 /**
 547  * radeon_enable_vblank_kms - enable vblank interrupt
 548  *
 549  * @dev: drm dev pointer
 550  * @crtc: crtc to enable vblank interrupt for
 551  *
 552  * Enable the interrupt on the requested crtc (all asics).
 553  * Returns 0 on success, -EINVAL on failure.
 554  */
 555 int radeon_enable_vblank_kms(struct drm_device *dev, int crtc)
 556 {
 557         struct radeon_device *rdev = dev->dev_private;
 558         unsigned long irqflags;
 559         int r;
 560
 561         if (crtc < 0 || crtc >= rdev->num_crtc) {
 562                 DRM_ERROR("Invalid crtc %d\n", crtc);
 563                 return -EINVAL;
 564         }
 565
 566         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 567         rdev->irq.crtc_vblank_int[crtc] = true;
 568         r = radeon_irq_set(rdev);
 569         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 570         return r;
 571 }
 572
 573 /**
 574  * radeon_disable_vblank_kms - disable vblank interrupt
 575  *
 576  * @dev: drm dev pointer
 577  * @crtc: crtc to disable vblank interrupt for
 578  *
 579  * Disable the interrupt on the requested crtc (all asics).
 580  */
 581 void radeon_disable_vblank_kms(struct drm_device *dev, int crtc)
 582 {
 583         struct radeon_device *rdev = dev->dev_private;
 584         unsigned long irqflags;
 585
 586         if (crtc < 0 || crtc >= rdev->num_crtc) {
 587                 DRM_ERROR("Invalid crtc %d\n", crtc);
 588                 return;
 589         }
 590
 591         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 592         rdev->irq.crtc_vblank_int[crtc] = false;
 593         radeon_irq_set(rdev);
 594         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 595 }
 596
 597 /**
 598  * radeon_get_vblank_timestamp_kms - get vblank timestamp
 599  *
 600  * @dev: drm dev pointer
 601  * @crtc: crtc to get the timestamp for
 602  * @max_error: max error
 603  * @vblank_time: time value
 604  * @flags: flags passed to the driver
 605  *
 606  * Gets the timestamp on the requested crtc based on the
 607  * scanout position.  (all asics).
 608  * Returns postive status flags on success, negative error on failure.
 609  */
 610 int radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
 611                                     int *max_error,
 612                                     struct timeval *vblank_time,
 613                                     unsigned flags)
 614 {
 615         struct drm_crtc *drmcrtc;
 616         struct radeon_device *rdev = dev->dev_private;
 617
 618         if (crtc < 0 || crtc >= dev->num_crtcs) {
 619                 DRM_ERROR("Invalid crtc %d\n", crtc);
 620                 return -EINVAL;
 621         }
 622
 623         /* Get associated drm_crtc: */
 624         drmcrtc = &rdev->mode_info.crtcs[crtc]->base;
 625
 626         /* Helper routine in DRM core does all the work: */
 627         return drm_calc_vbltimestamp_from_scanoutpos(dev, crtc, max_error,
 628                                                      vblank_time, flags,
 629                                                      drmcrtc);
 630 }
 631
 632 /*
 633  * IOCTL.
 634  */
 635 int radeon_dma_ioctl_kms(struct drm_device *dev, void *data,
 636                          struct drm_file *file_priv)
 637 {
 638         /* Not valid in KMS. */
 639         return -EINVAL;
 640 }
 641
 642 #define KMS_INVALID_IOCTL(name)                                         \
 643 int name(struct drm_device *dev, void *data, struct drm_file *file_priv)\
 644 {                                                                       \
 645         DRM_ERROR("invalid ioctl with kms %s\n", __func__);             \
 646         return -EINVAL;                                                 \
 647 }
 648
 649 /*
 650  * All these ioctls are invalid in kms world.
 651  */
 652 KMS_INVALID_IOCTL(radeon_cp_init_kms)
 653 KMS_INVALID_IOCTL(radeon_cp_start_kms)
 654 KMS_INVALID_IOCTL(radeon_cp_stop_kms)
 655 KMS_INVALID_IOCTL(radeon_cp_reset_kms)
 656 KMS_INVALID_IOCTL(radeon_cp_idle_kms)
 657 KMS_INVALID_IOCTL(radeon_cp_resume_kms)
 658 KMS_INVALID_IOCTL(radeon_engine_reset_kms)
 659 KMS_INVALID_IOCTL(radeon_fullscreen_kms)
 660 KMS_INVALID_IOCTL(radeon_cp_swap_kms)
 661 KMS_INVALID_IOCTL(radeon_cp_clear_kms)
 662 KMS_INVALID_IOCTL(radeon_cp_vertex_kms)
 663 KMS_INVALID_IOCTL(radeon_cp_indices_kms)
 664 KMS_INVALID_IOCTL(radeon_cp_texture_kms)
 665 KMS_INVALID_IOCTL(radeon_cp_stipple_kms)
 666 KMS_INVALID_IOCTL(radeon_cp_indirect_kms)
 667 KMS_INVALID_IOCTL(radeon_cp_vertex2_kms)
 668 KMS_INVALID_IOCTL(radeon_cp_cmdbuf_kms)
 669 KMS_INVALID_IOCTL(radeon_cp_getparam_kms)
 670 KMS_INVALID_IOCTL(radeon_cp_flip_kms)
 671 KMS_INVALID_IOCTL(radeon_mem_alloc_kms)
 672 KMS_INVALID_IOCTL(radeon_mem_free_kms)
 673 KMS_INVALID_IOCTL(radeon_mem_init_heap_kms)
 674 KMS_INVALID_IOCTL(radeon_irq_emit_kms)
 675 KMS_INVALID_IOCTL(radeon_irq_wait_kms)
 676 KMS_INVALID_IOCTL(radeon_cp_setparam_kms)
 677 KMS_INVALID_IOCTL(radeon_surface_alloc_kms)
 678 KMS_INVALID_IOCTL(radeon_surface_free_kms)
 679
 680
 681 struct drm_ioctl_desc radeon_ioctls_kms[] = {
 682         DRM_IOCTL_DEF_DRV(RADEON_CP_INIT, radeon_cp_init_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 683         DRM_IOCTL_DEF_DRV(RADEON_CP_START, radeon_cp_start_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 684         DRM_IOCTL_DEF_DRV(RADEON_CP_STOP, radeon_cp_stop_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 685         DRM_IOCTL_DEF_DRV(RADEON_CP_RESET, radeon_cp_reset_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 686         DRM_IOCTL_DEF_DRV(RADEON_CP_IDLE, radeon_cp_idle_kms, DRM_AUTH),
 687         DRM_IOCTL_DEF_DRV(RADEON_CP_RESUME, radeon_cp_resume_kms, DRM_AUTH),
 688         DRM_IOCTL_DEF_DRV(RADEON_RESET, radeon_engine_reset_kms, DRM_AUTH),
 689         DRM_IOCTL_DEF_DRV(RADEON_FULLSCREEN, radeon_fullscreen_kms, DRM_AUTH),
 690         DRM_IOCTL_DEF_DRV(RADEON_SWAP, radeon_cp_swap_kms, DRM_AUTH),
 691         DRM_IOCTL_DEF_DRV(RADEON_CLEAR, radeon_cp_clear_kms, DRM_AUTH),
 692         DRM_IOCTL_DEF_DRV(RADEON_VERTEX, radeon_cp_vertex_kms, DRM_AUTH),
 693         DRM_IOCTL_DEF_DRV(RADEON_INDICES, radeon_cp_indices_kms, DRM_AUTH),
 694         DRM_IOCTL_DEF_DRV(RADEON_TEXTURE, radeon_cp_texture_kms, DRM_AUTH),
 695         DRM_IOCTL_DEF_DRV(RADEON_STIPPLE, radeon_cp_stipple_kms, DRM_AUTH),
 696         DRM_IOCTL_DEF_DRV(RADEON_INDIRECT, radeon_cp_indirect_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 697         DRM_IOCTL_DEF_DRV(RADEON_VERTEX2, radeon_cp_vertex2_kms, DRM_AUTH),
 698         DRM_IOCTL_DEF_DRV(RADEON_CMDBUF, radeon_cp_cmdbuf_kms, DRM_AUTH),
 699         DRM_IOCTL_DEF_DRV(RADEON_GETPARAM, radeon_cp_getparam_kms, DRM_AUTH),
 700         DRM_IOCTL_DEF_DRV(RADEON_FLIP, radeon_cp_flip_kms, DRM_AUTH),
 701         DRM_IOCTL_DEF_DRV(RADEON_ALLOC, radeon_mem_alloc_kms, DRM_AUTH),
 702         DRM_IOCTL_DEF_DRV(RADEON_FREE, radeon_mem_free_kms, DRM_AUTH),
 703         DRM_IOCTL_DEF_DRV(RADEON_INIT_HEAP, radeon_mem_init_heap_kms, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 704         DRM_IOCTL_DEF_DRV(RADEON_IRQ_EMIT, radeon_irq_emit_kms, DRM_AUTH),
 705         DRM_IOCTL_DEF_DRV(RADEON_IRQ_WAIT, radeon_irq_wait_kms, DRM_AUTH),
 706         DRM_IOCTL_DEF_DRV(RADEON_SETPARAM, radeon_cp_setparam_kms, DRM_AUTH),
 707         DRM_IOCTL_DEF_DRV(RADEON_SURF_ALLOC, radeon_surface_alloc_kms, DRM_AUTH),
 708         DRM_IOCTL_DEF_DRV(RADEON_SURF_FREE, radeon_surface_free_kms, DRM_AUTH),
 709         /* KMS */
 710         DRM_IOCTL_DEF_DRV(RADEON_GEM_INFO, radeon_gem_info_ioctl, DRM_AUTH|DRM_UNLOCKED),
 711         DRM_IOCTL_DEF_DRV(RADEON_GEM_CREATE, radeon_gem_create_ioctl, DRM_AUTH|DRM_UNLOCKED),
 712         DRM_IOCTL_DEF_DRV(RADEON_GEM_MMAP, radeon_gem_mmap_ioctl, DRM_AUTH|DRM_UNLOCKED),
 713         DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_DOMAIN, radeon_gem_set_domain_ioctl, DRM_AUTH|DRM_UNLOCKED),
 714         DRM_IOCTL_DEF_DRV(RADEON_GEM_PREAD, radeon_gem_pread_ioctl, DRM_AUTH|DRM_UNLOCKED),
 715         DRM_IOCTL_DEF_DRV(RADEON_GEM_PWRITE, radeon_gem_pwrite_ioctl, DRM_AUTH|DRM_UNLOCKED),
 716         DRM_IOCTL_DEF_DRV(RADEON_GEM_WAIT_IDLE, radeon_gem_wait_idle_ioctl, DRM_AUTH|DRM_UNLOCKED),
 717         DRM_IOCTL_DEF_DRV(RADEON_CS, radeon_cs_ioctl, DRM_AUTH|DRM_UNLOCKED),
 718         DRM_IOCTL_DEF_DRV(RADEON_INFO, radeon_info_ioctl, DRM_AUTH|DRM_UNLOCKED),
 719         DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_TILING, radeon_gem_set_tiling_ioctl, DRM_AUTH|DRM_UNLOCKED),
 720         DRM_IOCTL_DEF_DRV(RADEON_GEM_GET_TILING, radeon_gem_get_tiling_ioctl, DRM_AUTH|DRM_UNLOCKED),
 721         DRM_IOCTL_DEF_DRV(RADEON_GEM_BUSY, radeon_gem_busy_ioctl, DRM_AUTH|DRM_UNLOCKED),
 722         DRM_IOCTL_DEF_DRV(RADEON_GEM_VA, radeon_gem_va_ioctl, DRM_AUTH|DRM_UNLOCKED),
 723 };
 724 int radeon_max_kms_ioctl = DRM_ARRAY_SIZE(radeon_ioctls_kms);