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
  29 #include <linux/pci.h>
  30 #include <linux/pm_runtime.h>
  31 #include <linux/slab.h>
  32 #include <linux/uaccess.h>
  33 #include <linux/vga_switcheroo.h>
  34
  35 #include <drm/drm_agpsupport.h>
  36 #include <drm/drm_fb_helper.h>
  37 #include <drm/drm_file.h>
  38 #include <drm/drm_ioctl.h>
  39 #include <drm/radeon_drm.h>
  40
  41 #include "radeon.h"
  42 #include "radeon_asic.h"
  43 #include "radeon_drv.h"
  44 #include "radeon_kms.h"
  45
  46 #if defined(CONFIG_VGA_SWITCHEROO)
  47 bool radeon_has_atpx(void);
  48 #else
  49 static inline bool radeon_has_atpx(void) { return false; }
  50 #endif
  51
  52 /**
  53  * radeon_driver_unload_kms - Main unload function for KMS.
  54  *
  55  * @dev: drm dev pointer
  56  *
  57  * This is the main unload function for KMS (all asics).
  58  * It calls radeon_modeset_fini() to tear down the
  59  * displays, and radeon_device_fini() to tear down
  60  * the rest of the device (CP, writeback, etc.).
  61  * Returns 0 on success.
  62  */
  63 void radeon_driver_unload_kms(struct drm_device *dev)
  64 {
  65         struct radeon_device *rdev = dev->dev_private;
  66
  67         if (rdev == NULL)
  68                 return;
  69
  70         if (rdev->rmmio == NULL)
  71                 goto done_free;
  72
  73         if (radeon_is_px(dev)) {
  74                 pm_runtime_get_sync(dev->dev);
  75                 pm_runtime_forbid(dev->dev);
  76         }
  77
  78         radeon_acpi_fini(rdev);
  79
  80         radeon_modeset_fini(rdev);
  81         radeon_device_fini(rdev);
  82
  83         if (dev->agp)
  84                 arch_phys_wc_del(dev->agp->agp_mtrr);
  85         kfree(dev->agp);
  86         dev->agp = NULL;
  87
  88 done_free:
  89         kfree(rdev);
  90         dev->dev_private = NULL;
  91 }
  92
  93 /**
  94  * radeon_driver_load_kms - Main load function for KMS.
  95  *
  96  * @dev: drm dev pointer
  97  * @flags: device flags
  98  *
  99  * This is the main load function for KMS (all asics).
 100  * It calls radeon_device_init() to set up the non-display
 101  * parts of the chip (asic init, CP, writeback, etc.), and
 102  * radeon_modeset_init() to set up the display parts
 103  * (crtcs, encoders, hotplug detect, etc.).
 104  * Returns 0 on success, error on failure.
 105  */
 106 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
 107 {
 108         struct radeon_device *rdev;
 109         int r, acpi_status;
 110
 111         rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
 112         if (rdev == NULL) {
 113                 return -ENOMEM;
 114         }
 115         dev->dev_private = (void *)rdev;
 116
 117         /* update BUS flag */
 118         if (pci_find_capability(dev->pdev, PCI_CAP_ID_AGP)) {
 119                 flags |= RADEON_IS_AGP;
 120         } else if (pci_is_pcie(dev->pdev)) {
 121                 flags |= RADEON_IS_PCIE;
 122         } else {
 123                 flags |= RADEON_IS_PCI;
 124         }
 125
 126         if ((radeon_runtime_pm != 0) &&
 127             radeon_has_atpx() &&
 128             ((flags & RADEON_IS_IGP) == 0) &&
 129             !pci_is_thunderbolt_attached(dev->pdev))
 130                 flags |= RADEON_IS_PX;
 131
 132         /* radeon_device_init should report only fatal error
 133          * like memory allocation failure or iomapping failure,
 134          * or memory manager initialization failure, it must
 135          * properly initialize the GPU MC controller and permit
 136          * VRAM allocation
 137          */
 138         r = radeon_device_init(rdev, dev, dev->pdev, flags);
 139         if (r) {
 140                 dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
 141                 goto out;
 142         }
 143
 144         /* Again modeset_init should fail only on fatal error
 145          * otherwise it should provide enough functionalities
 146          * for shadowfb to run
 147          */
 148         r = radeon_modeset_init(rdev);
 149         if (r)
 150                 dev_err(&dev->pdev->dev, "Fatal error during modeset init\n");
 151
 152         /* Call ACPI methods: require modeset init
 153          * but failure is not fatal
 154          */
 155         if (!r) {
 156                 acpi_status = radeon_acpi_init(rdev);
 157                 if (acpi_status)
 158                 dev_dbg(&dev->pdev->dev,
 159                                 "Error during ACPI methods call\n");
 160         }
 161
 162         if (radeon_is_px(dev)) {
 163                 dev_pm_set_driver_flags(dev->dev, DPM_FLAG_NO_DIRECT_COMPLETE);
 164                 pm_runtime_use_autosuspend(dev->dev);
 165                 pm_runtime_set_autosuspend_delay(dev->dev, 5000);
 166                 pm_runtime_set_active(dev->dev);
 167                 pm_runtime_allow(dev->dev);
 168                 pm_runtime_mark_last_busy(dev->dev);
 169                 pm_runtime_put_autosuspend(dev->dev);
 170         }
 171
 172 out:
 173         if (r)
 174                 radeon_driver_unload_kms(dev);
 175
 176
 177         return r;
 178 }
 179
 180 /**
 181  * radeon_set_filp_rights - Set filp right.
 182  *
 183  * @dev: drm dev pointer
 184  * @owner: drm file
 185  * @applier: drm file
 186  * @value: value
 187  *
 188  * Sets the filp rights for the device (all asics).
 189  */
 190 static void radeon_set_filp_rights(struct drm_device *dev,
 191                                    struct drm_file **owner,
 192                                    struct drm_file *applier,
 193                                    uint32_t *value)
 194 {
 195         struct radeon_device *rdev = dev->dev_private;
 196
 197         mutex_lock(&rdev->gem.mutex);
 198         if (*value == 1) {
 199                 /* wants rights */
 200                 if (!*owner)
 201                         *owner = applier;
 202         } else if (*value == 0) {
 203                 /* revokes rights */
 204                 if (*owner == applier)
 205                         *owner = NULL;
 206         }
 207         *value = *owner == applier ? 1 : 0;
 208         mutex_unlock(&rdev->gem.mutex);
 209 }
 210
 211 /*
 212  * Userspace get information ioctl
 213  */
 214 /**
 215  * radeon_info_ioctl - answer a device specific request.
 216  *
 217  * @dev: drm device pointer
 218  * @data: request object
 219  * @filp: drm filp
 220  *
 221  * This function is used to pass device specific parameters to the userspace
 222  * drivers.  Examples include: pci device id, pipeline parms, tiling params,
 223  * etc. (all asics).
 224  * Returns 0 on success, -EINVAL on failure.
 225  */
 226 int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 227 {
 228         struct radeon_device *rdev = dev->dev_private;
 229         struct drm_radeon_info *info = data;
 230         struct radeon_mode_info *minfo = &rdev->mode_info;
 231         uint32_t *value, value_tmp, *value_ptr, value_size;
 232         uint64_t value64;
 233         struct drm_crtc *crtc;
 234         int i, found;
 235
 236         value_ptr = (uint32_t *)((unsigned long)info->value);
 237         value = &value_tmp;
 238         value_size = sizeof(uint32_t);
 239
 240         switch (info->request) {
 241         case RADEON_INFO_DEVICE_ID:
 242                 *value = dev->pdev->device;
 243                 break;
 244         case RADEON_INFO_NUM_GB_PIPES:
 245                 *value = rdev->num_gb_pipes;
 246                 break;
 247         case RADEON_INFO_NUM_Z_PIPES:
 248                 *value = rdev->num_z_pipes;
 249                 break;
 250         case RADEON_INFO_ACCEL_WORKING:
 251                 /* xf86-video-ati 6.13.0 relies on this being false for evergreen */
 252                 if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK))
 253                         *value = false;
 254                 else
 255                         *value = rdev->accel_working;
 256                 break;
 257         case RADEON_INFO_CRTC_FROM_ID:
 258                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 259                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 260                         return -EFAULT;
 261                 }
 262                 for (i = 0, found = 0; i < rdev->num_crtc; i++) {
 263                         crtc = (struct drm_crtc *)minfo->crtcs[i];
 264                         if (crtc && crtc->base.id == *value) {
 265                                 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 266                                 *value = radeon_crtc->crtc_id;
 267                                 found = 1;
 268                                 break;
 269                         }
 270                 }
 271                 if (!found) {
 272                         DRM_DEBUG_KMS("unknown crtc id %d\n", *value);
 273                         return -EINVAL;
 274                 }
 275                 break;
 276         case RADEON_INFO_ACCEL_WORKING2:
 277                 if (rdev->family == CHIP_HAWAII) {
 278                         if (rdev->accel_working) {
 279                                 if (rdev->new_fw)
 280                                         *value = 3;
 281                                 else
 282                                         *value = 2;
 283                         } else {
 284                                 *value = 0;
 285                         }
 286                 } else {
 287                         *value = rdev->accel_working;
 288                 }
 289                 break;
 290         case RADEON_INFO_TILING_CONFIG:
 291                 if (rdev->family >= CHIP_BONAIRE)
 292                         *value = rdev->config.cik.tile_config;
 293                 else if (rdev->family >= CHIP_TAHITI)
 294                         *value = rdev->config.si.tile_config;
 295                 else if (rdev->family >= CHIP_CAYMAN)
 296                         *value = rdev->config.cayman.tile_config;
 297                 else if (rdev->family >= CHIP_CEDAR)
 298                         *value = rdev->config.evergreen.tile_config;
 299                 else if (rdev->family >= CHIP_RV770)
 300                         *value = rdev->config.rv770.tile_config;
 301                 else if (rdev->family >= CHIP_R600)
 302                         *value = rdev->config.r600.tile_config;
 303                 else {
 304                         DRM_DEBUG_KMS("tiling config is r6xx+ only!\n");
 305                         return -EINVAL;
 306                 }
 307                 break;
 308         case RADEON_INFO_WANT_HYPERZ:
 309                 /* The "value" here is both an input and output parameter.
 310                  * If the input value is 1, filp requests hyper-z access.
 311                  * If the input value is 0, filp revokes its hyper-z access.
 312                  *
 313                  * When returning, the value is 1 if filp owns hyper-z access,
 314                  * 0 otherwise. */
 315                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 316                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 317                         return -EFAULT;
 318                 }
 319                 if (*value >= 2) {
 320                         DRM_DEBUG_KMS("WANT_HYPERZ: invalid value %d\n", *value);
 321                         return -EINVAL;
 322                 }
 323                 radeon_set_filp_rights(dev, &rdev->hyperz_filp, filp, value);
 324                 break;
 325         case RADEON_INFO_WANT_CMASK:
 326                 /* The same logic as Hyper-Z. */
 327                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 328                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 329                         return -EFAULT;
 330                 }
 331                 if (*value >= 2) {
 332                         DRM_DEBUG_KMS("WANT_CMASK: invalid value %d\n", *value);
 333                         return -EINVAL;
 334                 }
 335                 radeon_set_filp_rights(dev, &rdev->cmask_filp, filp, value);
 336                 break;
 337         case RADEON_INFO_CLOCK_CRYSTAL_FREQ:
 338                 /* return clock value in KHz */
 339                 if (rdev->asic->get_xclk)
 340                         *value = radeon_get_xclk(rdev) * 10;
 341                 else
 342                         *value = rdev->clock.spll.reference_freq * 10;
 343                 break;
 344         case RADEON_INFO_NUM_BACKENDS:
 345                 if (rdev->family >= CHIP_BONAIRE)
 346                         *value = rdev->config.cik.max_backends_per_se *
 347                                 rdev->config.cik.max_shader_engines;
 348                 else if (rdev->family >= CHIP_TAHITI)
 349                         *value = rdev->config.si.max_backends_per_se *
 350                                 rdev->config.si.max_shader_engines;
 351                 else if (rdev->family >= CHIP_CAYMAN)
 352                         *value = rdev->config.cayman.max_backends_per_se *
 353                                 rdev->config.cayman.max_shader_engines;
 354                 else if (rdev->family >= CHIP_CEDAR)
 355                         *value = rdev->config.evergreen.max_backends;
 356                 else if (rdev->family >= CHIP_RV770)
 357                         *value = rdev->config.rv770.max_backends;
 358                 else if (rdev->family >= CHIP_R600)
 359                         *value = rdev->config.r600.max_backends;
 360                 else {
 361                         return -EINVAL;
 362                 }
 363                 break;
 364         case RADEON_INFO_NUM_TILE_PIPES:
 365                 if (rdev->family >= CHIP_BONAIRE)
 366                         *value = rdev->config.cik.max_tile_pipes;
 367                 else if (rdev->family >= CHIP_TAHITI)
 368                         *value = rdev->config.si.max_tile_pipes;
 369                 else if (rdev->family >= CHIP_CAYMAN)
 370                         *value = rdev->config.cayman.max_tile_pipes;
 371                 else if (rdev->family >= CHIP_CEDAR)
 372                         *value = rdev->config.evergreen.max_tile_pipes;
 373                 else if (rdev->family >= CHIP_RV770)
 374                         *value = rdev->config.rv770.max_tile_pipes;
 375                 else if (rdev->family >= CHIP_R600)
 376                         *value = rdev->config.r600.max_tile_pipes;
 377                 else {
 378                         return -EINVAL;
 379                 }
 380                 break;
 381         case RADEON_INFO_FUSION_GART_WORKING:
 382                 *value = 1;
 383                 break;
 384         case RADEON_INFO_BACKEND_MAP:
 385                 if (rdev->family >= CHIP_BONAIRE)
 386                         *value = rdev->config.cik.backend_map;
 387                 else if (rdev->family >= CHIP_TAHITI)
 388                         *value = rdev->config.si.backend_map;
 389                 else if (rdev->family >= CHIP_CAYMAN)
 390                         *value = rdev->config.cayman.backend_map;
 391                 else if (rdev->family >= CHIP_CEDAR)
 392                         *value = rdev->config.evergreen.backend_map;
 393                 else if (rdev->family >= CHIP_RV770)
 394                         *value = rdev->config.rv770.backend_map;
 395                 else if (rdev->family >= CHIP_R600)
 396                         *value = rdev->config.r600.backend_map;
 397                 else {
 398                         return -EINVAL;
 399                 }
 400                 break;
 401         case RADEON_INFO_VA_START:
 402                 /* this is where we report if vm is supported or not */
 403                 if (rdev->family < CHIP_CAYMAN)
 404                         return -EINVAL;
 405                 *value = RADEON_VA_RESERVED_SIZE;
 406                 break;
 407         case RADEON_INFO_IB_VM_MAX_SIZE:
 408                 /* this is where we report if vm is supported or not */
 409                 if (rdev->family < CHIP_CAYMAN)
 410                         return -EINVAL;
 411                 *value = RADEON_IB_VM_MAX_SIZE;
 412                 break;
 413         case RADEON_INFO_MAX_PIPES:
 414                 if (rdev->family >= CHIP_BONAIRE)
 415                         *value = rdev->config.cik.max_cu_per_sh;
 416                 else if (rdev->family >= CHIP_TAHITI)
 417                         *value = rdev->config.si.max_cu_per_sh;
 418                 else if (rdev->family >= CHIP_CAYMAN)
 419                         *value = rdev->config.cayman.max_pipes_per_simd;
 420                 else if (rdev->family >= CHIP_CEDAR)
 421                         *value = rdev->config.evergreen.max_pipes;
 422                 else if (rdev->family >= CHIP_RV770)
 423                         *value = rdev->config.rv770.max_pipes;
 424                 else if (rdev->family >= CHIP_R600)
 425                         *value = rdev->config.r600.max_pipes;
 426                 else {
 427                         return -EINVAL;
 428                 }
 429                 break;
 430         case RADEON_INFO_TIMESTAMP:
 431                 if (rdev->family < CHIP_R600) {
 432                         DRM_DEBUG_KMS("timestamp is r6xx+ only!\n");
 433                         return -EINVAL;
 434                 }
 435                 value = (uint32_t*)&value64;
 436                 value_size = sizeof(uint64_t);
 437                 value64 = radeon_get_gpu_clock_counter(rdev);
 438                 break;
 439         case RADEON_INFO_MAX_SE:
 440                 if (rdev->family >= CHIP_BONAIRE)
 441                         *value = rdev->config.cik.max_shader_engines;
 442                 else if (rdev->family >= CHIP_TAHITI)
 443                         *value = rdev->config.si.max_shader_engines;
 444                 else if (rdev->family >= CHIP_CAYMAN)
 445                         *value = rdev->config.cayman.max_shader_engines;
 446                 else if (rdev->family >= CHIP_CEDAR)
 447                         *value = rdev->config.evergreen.num_ses;
 448                 else
 449                         *value = 1;
 450                 break;
 451         case RADEON_INFO_MAX_SH_PER_SE:
 452                 if (rdev->family >= CHIP_BONAIRE)
 453                         *value = rdev->config.cik.max_sh_per_se;
 454                 else if (rdev->family >= CHIP_TAHITI)
 455                         *value = rdev->config.si.max_sh_per_se;
 456                 else
 457                         return -EINVAL;
 458                 break;
 459         case RADEON_INFO_FASTFB_WORKING:
 460                 *value = rdev->fastfb_working;
 461                 break;
 462         case RADEON_INFO_RING_WORKING:
 463                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 464                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 465                         return -EFAULT;
 466                 }
 467                 switch (*value) {
 468                 case RADEON_CS_RING_GFX:
 469                 case RADEON_CS_RING_COMPUTE:
 470                         *value = rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready;
 471                         break;
 472                 case RADEON_CS_RING_DMA:
 473                         *value = rdev->ring[R600_RING_TYPE_DMA_INDEX].ready;
 474                         *value |= rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready;
 475                         break;
 476                 case RADEON_CS_RING_UVD:
 477                         *value = rdev->ring[R600_RING_TYPE_UVD_INDEX].ready;
 478                         break;
 479                 case RADEON_CS_RING_VCE:
 480                         *value = rdev->ring[TN_RING_TYPE_VCE1_INDEX].ready;
 481                         break;
 482                 default:
 483                         return -EINVAL;
 484                 }
 485                 break;
 486         case RADEON_INFO_SI_TILE_MODE_ARRAY:
 487                 if (rdev->family >= CHIP_BONAIRE) {
 488                         value = rdev->config.cik.tile_mode_array;
 489                         value_size = sizeof(uint32_t)*32;
 490                 } else if (rdev->family >= CHIP_TAHITI) {
 491                         value = rdev->config.si.tile_mode_array;
 492                         value_size = sizeof(uint32_t)*32;
 493                 } else {
 494                         DRM_DEBUG_KMS("tile mode array is si+ only!\n");
 495                         return -EINVAL;
 496                 }
 497                 break;
 498         case RADEON_INFO_CIK_MACROTILE_MODE_ARRAY:
 499                 if (rdev->family >= CHIP_BONAIRE) {
 500                         value = rdev->config.cik.macrotile_mode_array;
 501                         value_size = sizeof(uint32_t)*16;
 502                 } else {
 503                         DRM_DEBUG_KMS("macrotile mode array is cik+ only!\n");
 504                         return -EINVAL;
 505                 }
 506                 break;
 507         case RADEON_INFO_SI_CP_DMA_COMPUTE:
 508                 *value = 1;
 509                 break;
 510         case RADEON_INFO_SI_BACKEND_ENABLED_MASK:
 511                 if (rdev->family >= CHIP_BONAIRE) {
 512                         *value = rdev->config.cik.backend_enable_mask;
 513                 } else if (rdev->family >= CHIP_TAHITI) {
 514                         *value = rdev->config.si.backend_enable_mask;
 515                 } else {
 516                         DRM_DEBUG_KMS("BACKEND_ENABLED_MASK is si+ only!\n");
 517                 }
 518                 break;
 519         case RADEON_INFO_MAX_SCLK:
 520                 if ((rdev->pm.pm_method == PM_METHOD_DPM) &&
 521                     rdev->pm.dpm_enabled)
 522                         *value = rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk * 10;
 523                 else
 524                         *value = rdev->pm.default_sclk * 10;
 525                 break;
 526         case RADEON_INFO_VCE_FW_VERSION:
 527                 *value = rdev->vce.fw_version;
 528                 break;
 529         case RADEON_INFO_VCE_FB_VERSION:
 530                 *value = rdev->vce.fb_version;
 531                 break;
 532         case RADEON_INFO_NUM_BYTES_MOVED:
 533                 value = (uint32_t*)&value64;
 534                 value_size = sizeof(uint64_t);
 535                 value64 = atomic64_read(&rdev->num_bytes_moved);
 536                 break;
 537         case RADEON_INFO_VRAM_USAGE:
 538                 value = (uint32_t*)&value64;
 539                 value_size = sizeof(uint64_t);
 540                 value64 = atomic64_read(&rdev->vram_usage);
 541                 break;
 542         case RADEON_INFO_GTT_USAGE:
 543                 value = (uint32_t*)&value64;
 544                 value_size = sizeof(uint64_t);
 545                 value64 = atomic64_read(&rdev->gtt_usage);
 546                 break;
 547         case RADEON_INFO_ACTIVE_CU_COUNT:
 548                 if (rdev->family >= CHIP_BONAIRE)
 549                         *value = rdev->config.cik.active_cus;
 550                 else if (rdev->family >= CHIP_TAHITI)
 551                         *value = rdev->config.si.active_cus;
 552                 else if (rdev->family >= CHIP_CAYMAN)
 553                         *value = rdev->config.cayman.active_simds;
 554                 else if (rdev->family >= CHIP_CEDAR)
 555                         *value = rdev->config.evergreen.active_simds;
 556                 else if (rdev->family >= CHIP_RV770)
 557                         *value = rdev->config.rv770.active_simds;
 558                 else if (rdev->family >= CHIP_R600)
 559                         *value = rdev->config.r600.active_simds;
 560                 else
 561                         *value = 1;
 562                 break;
 563         case RADEON_INFO_CURRENT_GPU_TEMP:
 564                 /* get temperature in millidegrees C */
 565                 if (rdev->asic->pm.get_temperature)
 566                         *value = radeon_get_temperature(rdev);
 567                 else
 568                         *value = 0;
 569                 break;
 570         case RADEON_INFO_CURRENT_GPU_SCLK:
 571                 /* get sclk in Mhz */
 572                 if (rdev->pm.dpm_enabled)
 573                         *value = radeon_dpm_get_current_sclk(rdev) / 100;
 574                 else
 575                         *value = rdev->pm.current_sclk / 100;
 576                 break;
 577         case RADEON_INFO_CURRENT_GPU_MCLK:
 578                 /* get mclk in Mhz */
 579                 if (rdev->pm.dpm_enabled)
 580                         *value = radeon_dpm_get_current_mclk(rdev) / 100;
 581                 else
 582                         *value = rdev->pm.current_mclk / 100;
 583                 break;
 584         case RADEON_INFO_READ_REG:
 585                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 586                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 587                         return -EFAULT;
 588                 }
 589                 if (radeon_get_allowed_info_register(rdev, *value, value))
 590                         return -EINVAL;
 591                 break;
 592         case RADEON_INFO_VA_UNMAP_WORKING:
 593                 *value = true;
 594                 break;
 595         case RADEON_INFO_GPU_RESET_COUNTER:
 596                 *value = atomic_read(&rdev->gpu_reset_counter);
 597                 break;
 598         default:
 599                 DRM_DEBUG_KMS("Invalid request %d\n", info->request);
 600                 return -EINVAL;
 601         }
 602         if (copy_to_user(value_ptr, (char*)value, value_size)) {
 603                 DRM_ERROR("copy_to_user %s:%u\n", __func__, __LINE__);
 604                 return -EFAULT;
 605         }
 606         return 0;
 607 }
 608
 609
 610 /*
 611  * Outdated mess for old drm with Xorg being in charge (void function now).
 612  */
 613 /**
 614  * radeon_driver_lastclose_kms - drm callback for last close
 615  *
 616  * @dev: drm dev pointer
 617  *
 618  * Switch vga_switcheroo state after last close (all asics).
 619  */
 620 void radeon_driver_lastclose_kms(struct drm_device *dev)
 621 {
 622         drm_fb_helper_lastclose(dev);
 623         vga_switcheroo_process_delayed_switch();
 624 }
 625
 626 /**
 627  * radeon_driver_open_kms - drm callback for open
 628  *
 629  * @dev: drm dev pointer
 630  * @file_priv: drm file
 631  *
 632  * On device open, init vm on cayman+ (all asics).
 633  * Returns 0 on success, error on failure.
 634  */
 635 int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 636 {
 637         struct radeon_device *rdev = dev->dev_private;
 638         int r;
 639
 640         file_priv->driver_priv = NULL;
 641
 642         r = pm_runtime_get_sync(dev->dev);
 643         if (r < 0) {
 644                 pm_runtime_put_autosuspend(dev->dev);
 645                 return r;
 646         }
 647
 648         /* new gpu have virtual address space support */
 649         if (rdev->family >= CHIP_CAYMAN) {
 650                 struct radeon_fpriv *fpriv;
 651                 struct radeon_vm *vm;
 652
 653                 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
 654                 if (unlikely(!fpriv)) {
 655                         r = -ENOMEM;
 656                         goto out_suspend;
 657                 }
 658
 659                 if (rdev->accel_working) {
 660                         vm = &fpriv->vm;
 661                         r = radeon_vm_init(rdev, vm);
 662                         if (r) {
 663                                 kfree(fpriv);
 664                                 goto out_suspend;
 665                         }
 666
 667                         r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 668                         if (r) {
 669                                 radeon_vm_fini(rdev, vm);
 670                                 kfree(fpriv);
 671                                 goto out_suspend;
 672                         }
 673
 674                         /* map the ib pool buffer read only into
 675                          * virtual address space */
 676                         vm->ib_bo_va = radeon_vm_bo_add(rdev, vm,
 677                                                         rdev->ring_tmp_bo.bo);
 678                         r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va,
 679                                                   RADEON_VA_IB_OFFSET,
 680                                                   RADEON_VM_PAGE_READABLE |
 681                                                   RADEON_VM_PAGE_SNOOPED);
 682                         if (r) {
 683                                 radeon_vm_fini(rdev, vm);
 684                                 kfree(fpriv);
 685                                 goto out_suspend;
 686                         }
 687                 }
 688                 file_priv->driver_priv = fpriv;
 689         }
 690
 691 out_suspend:
 692         pm_runtime_mark_last_busy(dev->dev);
 693         pm_runtime_put_autosuspend(dev->dev);
 694         return r;
 695 }
 696
 697 /**
 698  * radeon_driver_postclose_kms - drm callback for post close
 699  *
 700  * @dev: drm dev pointer
 701  * @file_priv: drm file
 702  *
 703  * On device close, tear down hyperz and cmask filps on r1xx-r5xx
 704  * (all asics).  And tear down vm on cayman+ (all asics).
 705  */
 706 void radeon_driver_postclose_kms(struct drm_device *dev,
 707                                  struct drm_file *file_priv)
 708 {
 709         struct radeon_device *rdev = dev->dev_private;
 710
 711         pm_runtime_get_sync(dev->dev);
 712
 713         mutex_lock(&rdev->gem.mutex);
 714         if (rdev->hyperz_filp == file_priv)
 715                 rdev->hyperz_filp = NULL;
 716         if (rdev->cmask_filp == file_priv)
 717                 rdev->cmask_filp = NULL;
 718         mutex_unlock(&rdev->gem.mutex);
 719
 720         radeon_uvd_free_handles(rdev, file_priv);
 721         radeon_vce_free_handles(rdev, file_priv);
 722
 723         /* new gpu have virtual address space support */
 724         if (rdev->family >= CHIP_CAYMAN && file_priv->driver_priv) {
 725                 struct radeon_fpriv *fpriv = file_priv->driver_priv;
 726                 struct radeon_vm *vm = &fpriv->vm;
 727                 int r;
 728
 729                 if (rdev->accel_working) {
 730                         r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 731                         if (!r) {
 732                                 if (vm->ib_bo_va)
 733                                         radeon_vm_bo_rmv(rdev, vm->ib_bo_va);
 734                                 radeon_bo_unreserve(rdev->ring_tmp_bo.bo);
 735                         }
 736                         radeon_vm_fini(rdev, vm);
 737                 }
 738
 739                 kfree(fpriv);
 740                 file_priv->driver_priv = NULL;
 741         }
 742         pm_runtime_mark_last_busy(dev->dev);
 743         pm_runtime_put_autosuspend(dev->dev);
 744 }
 745
 746 /*
 747  * VBlank related functions.
 748  */
 749 /**
 750  * radeon_get_vblank_counter_kms - get frame count
 751  *
 752  * @crtc: crtc to get the frame count from
 753  *
 754  * Gets the frame count on the requested crtc (all asics).
 755  * Returns frame count on success, -EINVAL on failure.
 756  */
 757 u32 radeon_get_vblank_counter_kms(struct drm_crtc *crtc)
 758 {
 759         struct drm_device *dev = crtc->dev;
 760         unsigned int pipe = crtc->index;
 761         int vpos, hpos, stat;
 762         u32 count;
 763         struct radeon_device *rdev = dev->dev_private;
 764
 765         if (pipe >= rdev->num_crtc) {
 766                 DRM_ERROR("Invalid crtc %u\n", pipe);
 767                 return -EINVAL;
 768         }
 769
 770         /* The hw increments its frame counter at start of vsync, not at start
 771          * of vblank, as is required by DRM core vblank counter handling.
 772          * Cook the hw count here to make it appear to the caller as if it
 773          * incremented at start of vblank. We measure distance to start of
 774          * vblank in vpos. vpos therefore will be >= 0 between start of vblank
 775          * and start of vsync, so vpos >= 0 means to bump the hw frame counter
 776          * result by 1 to give the proper appearance to caller.
 777          */
 778         if (rdev->mode_info.crtcs[pipe]) {
 779                 /* Repeat readout if needed to provide stable result if
 780                  * we cross start of vsync during the queries.
 781                  */
 782                 do {
 783                         count = radeon_get_vblank_counter(rdev, pipe);
 784                         /* Ask radeon_get_crtc_scanoutpos to return vpos as
 785                          * distance to start of vblank, instead of regular
 786                          * vertical scanout pos.
 787                          */
 788                         stat = radeon_get_crtc_scanoutpos(
 789                                 dev, pipe, GET_DISTANCE_TO_VBLANKSTART,
 790                                 &vpos, &hpos, NULL, NULL,
 791                                 &rdev->mode_info.crtcs[pipe]->base.hwmode);
 792                 } while (count != radeon_get_vblank_counter(rdev, pipe));
 793
 794                 if (((stat & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE)) !=
 795                     (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE))) {
 796                         DRM_DEBUG_VBL("Query failed! stat %d\n", stat);
 797                 }
 798                 else {
 799                         DRM_DEBUG_VBL("crtc %u: dist from vblank start %d\n",
 800                                       pipe, vpos);
 801
 802                         /* Bump counter if we are at >= leading edge of vblank,
 803                          * but before vsync where vpos would turn negative and
 804                          * the hw counter really increments.
 805                          */
 806                         if (vpos >= 0)
 807                                 count++;
 808                 }
 809         }
 810         else {
 811             /* Fallback to use value as is. */
 812             count = radeon_get_vblank_counter(rdev, pipe);
 813             DRM_DEBUG_VBL("NULL mode info! Returned count may be wrong.\n");
 814         }
 815
 816         return count;
 817 }
 818
 819 /**
 820  * radeon_enable_vblank_kms - enable vblank interrupt
 821  *
 822  * @crtc: crtc to enable vblank interrupt for
 823  *
 824  * Enable the interrupt on the requested crtc (all asics).
 825  * Returns 0 on success, -EINVAL on failure.
 826  */
 827 int radeon_enable_vblank_kms(struct drm_crtc *crtc)
 828 {
 829         struct drm_device *dev = crtc->dev;
 830         unsigned int pipe = crtc->index;
 831         struct radeon_device *rdev = dev->dev_private;
 832         unsigned long irqflags;
 833         int r;
 834
 835         if (pipe >= rdev->num_crtc) {
 836                 DRM_ERROR("Invalid crtc %d\n", pipe);
 837                 return -EINVAL;
 838         }
 839
 840         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 841         rdev->irq.crtc_vblank_int[pipe] = true;
 842         r = radeon_irq_set(rdev);
 843         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 844         return r;
 845 }
 846
 847 /**
 848  * radeon_disable_vblank_kms - disable vblank interrupt
 849  *
 850  * @crtc: crtc to disable vblank interrupt for
 851  *
 852  * Disable the interrupt on the requested crtc (all asics).
 853  */
 854 void radeon_disable_vblank_kms(struct drm_crtc *crtc)
 855 {
 856         struct drm_device *dev = crtc->dev;
 857         unsigned int pipe = crtc->index;
 858         struct radeon_device *rdev = dev->dev_private;
 859         unsigned long irqflags;
 860
 861         if (pipe >= rdev->num_crtc) {
 862                 DRM_ERROR("Invalid crtc %d\n", pipe);
 863                 return;
 864         }
 865
 866         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 867         rdev->irq.crtc_vblank_int[pipe] = false;
 868         radeon_irq_set(rdev);
 869         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 870 }