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_fb_helper.h>
  36 #include <drm/drm_file.h>
  37 #include <drm/drm_ioctl.h>
  38 #include <drm/radeon_drm.h>
  39
  40 #include "radeon.h"
  41 #include "radeon_asic.h"
  42
  43 #if defined(CONFIG_VGA_SWITCHEROO)
  44 bool radeon_has_atpx(void);
  45 #else
  46 static inline bool radeon_has_atpx(void) { return false; }
  47 #endif
  48
  49 /**
  50  * radeon_driver_unload_kms - Main unload function for KMS.
  51  *
  52  * @dev: drm dev pointer
  53  *
  54  * This is the main unload function for KMS (all asics).
  55  * It calls radeon_modeset_fini() to tear down the
  56  * displays, and radeon_device_fini() to tear down
  57  * the rest of the device (CP, writeback, etc.).
  58  * Returns 0 on success.
  59  */
  60 void radeon_driver_unload_kms(struct drm_device *dev)
  61 {
  62         struct radeon_device *rdev = dev->dev_private;
  63
  64         if (rdev == NULL)
  65                 return;
  66
  67         if (rdev->rmmio == NULL)
  68                 goto done_free;
  69
  70         if (radeon_is_px(dev)) {
  71                 pm_runtime_get_sync(dev->dev);
  72                 pm_runtime_forbid(dev->dev);
  73         }
  74
  75         radeon_acpi_fini(rdev);
  76
  77         radeon_modeset_fini(rdev);
  78         radeon_device_fini(rdev);
  79
  80 done_free:
  81         kfree(rdev);
  82         dev->dev_private = NULL;
  83 }
  84
  85 /**
  86  * radeon_driver_load_kms - Main load function for KMS.
  87  *
  88  * @dev: drm dev pointer
  89  * @flags: device flags
  90  *
  91  * This is the main load function for KMS (all asics).
  92  * It calls radeon_device_init() to set up the non-display
  93  * parts of the chip (asic init, CP, writeback, etc.), and
  94  * radeon_modeset_init() to set up the display parts
  95  * (crtcs, encoders, hotplug detect, etc.).
  96  * Returns 0 on success, error on failure.
  97  */
  98 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
  99 {
 100         struct radeon_device *rdev;
 101         int r, acpi_status;
 102
 103         rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
 104         if (rdev == NULL) {
 105                 return -ENOMEM;
 106         }
 107         dev->dev_private = (void *)rdev;
 108
 109         /* update BUS flag */
 110         if (pci_find_capability(dev->pdev, PCI_CAP_ID_AGP)) {
 111                 flags |= RADEON_IS_AGP;
 112         } else if (pci_is_pcie(dev->pdev)) {
 113                 flags |= RADEON_IS_PCIE;
 114         } else {
 115                 flags |= RADEON_IS_PCI;
 116         }
 117
 118         if ((radeon_runtime_pm != 0) &&
 119             radeon_has_atpx() &&
 120             ((flags & RADEON_IS_IGP) == 0) &&
 121             !pci_is_thunderbolt_attached(dev->pdev))
 122                 flags |= RADEON_IS_PX;
 123
 124         /* radeon_device_init should report only fatal error
 125          * like memory allocation failure or iomapping failure,
 126          * or memory manager initialization failure, it must
 127          * properly initialize the GPU MC controller and permit
 128          * VRAM allocation
 129          */
 130         r = radeon_device_init(rdev, dev, dev->pdev, flags);
 131         if (r) {
 132                 dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
 133                 goto out;
 134         }
 135
 136         /* Again modeset_init should fail only on fatal error
 137          * otherwise it should provide enough functionalities
 138          * for shadowfb to run
 139          */
 140         r = radeon_modeset_init(rdev);
 141         if (r)
 142                 dev_err(&dev->pdev->dev, "Fatal error during modeset init\n");
 143
 144         /* Call ACPI methods: require modeset init
 145          * but failure is not fatal
 146          */
 147         if (!r) {
 148                 acpi_status = radeon_acpi_init(rdev);
 149                 if (acpi_status)
 150                 dev_dbg(&dev->pdev->dev,
 151                                 "Error during ACPI methods call\n");
 152         }
 153
 154         if (radeon_is_px(dev)) {
 155                 dev_pm_set_driver_flags(dev->dev, DPM_FLAG_NEVER_SKIP);
 156                 pm_runtime_use_autosuspend(dev->dev);
 157                 pm_runtime_set_autosuspend_delay(dev->dev, 5000);
 158                 pm_runtime_set_active(dev->dev);
 159                 pm_runtime_allow(dev->dev);
 160                 pm_runtime_mark_last_busy(dev->dev);
 161                 pm_runtime_put_autosuspend(dev->dev);
 162         }
 163
 164 out:
 165         if (r)
 166                 radeon_driver_unload_kms(dev);
 167
 168
 169         return r;
 170 }
 171
 172 /**
 173  * radeon_set_filp_rights - Set filp right.
 174  *
 175  * @dev: drm dev pointer
 176  * @owner: drm file
 177  * @applier: drm file
 178  * @value: value
 179  *
 180  * Sets the filp rights for the device (all asics).
 181  */
 182 static void radeon_set_filp_rights(struct drm_device *dev,
 183                                    struct drm_file **owner,
 184                                    struct drm_file *applier,
 185                                    uint32_t *value)
 186 {
 187         struct radeon_device *rdev = dev->dev_private;
 188
 189         mutex_lock(&rdev->gem.mutex);
 190         if (*value == 1) {
 191                 /* wants rights */
 192                 if (!*owner)
 193                         *owner = applier;
 194         } else if (*value == 0) {
 195                 /* revokes rights */
 196                 if (*owner == applier)
 197                         *owner = NULL;
 198         }
 199         *value = *owner == applier ? 1 : 0;
 200         mutex_unlock(&rdev->gem.mutex);
 201 }
 202
 203 /*
 204  * Userspace get information ioctl
 205  */
 206 /**
 207  * radeon_info_ioctl - answer a device specific request.
 208  *
 209  * @rdev: radeon device pointer
 210  * @data: request object
 211  * @filp: drm filp
 212  *
 213  * This function is used to pass device specific parameters to the userspace
 214  * drivers.  Examples include: pci device id, pipeline parms, tiling params,
 215  * etc. (all asics).
 216  * Returns 0 on success, -EINVAL on failure.
 217  */
 218 static int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 219 {
 220         struct radeon_device *rdev = dev->dev_private;
 221         struct drm_radeon_info *info = data;
 222         struct radeon_mode_info *minfo = &rdev->mode_info;
 223         uint32_t *value, value_tmp, *value_ptr, value_size;
 224         uint64_t value64;
 225         struct drm_crtc *crtc;
 226         int i, found;
 227
 228         value_ptr = (uint32_t *)((unsigned long)info->value);
 229         value = &value_tmp;
 230         value_size = sizeof(uint32_t);
 231
 232         switch (info->request) {
 233         case RADEON_INFO_DEVICE_ID:
 234                 *value = dev->pdev->device;
 235                 break;
 236         case RADEON_INFO_NUM_GB_PIPES:
 237                 *value = rdev->num_gb_pipes;
 238                 break;
 239         case RADEON_INFO_NUM_Z_PIPES:
 240                 *value = rdev->num_z_pipes;
 241                 break;
 242         case RADEON_INFO_ACCEL_WORKING:
 243                 /* xf86-video-ati 6.13.0 relies on this being false for evergreen */
 244                 if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK))
 245                         *value = false;
 246                 else
 247                         *value = rdev->accel_working;
 248                 break;
 249         case RADEON_INFO_CRTC_FROM_ID:
 250                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 251                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 252                         return -EFAULT;
 253                 }
 254                 for (i = 0, found = 0; i < rdev->num_crtc; i++) {
 255                         crtc = (struct drm_crtc *)minfo->crtcs[i];
 256                         if (crtc && crtc->base.id == *value) {
 257                                 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 258                                 *value = radeon_crtc->crtc_id;
 259                                 found = 1;
 260                                 break;
 261                         }
 262                 }
 263                 if (!found) {
 264                         DRM_DEBUG_KMS("unknown crtc id %d\n", *value);
 265                         return -EINVAL;
 266                 }
 267                 break;
 268         case RADEON_INFO_ACCEL_WORKING2:
 269                 if (rdev->family == CHIP_HAWAII) {
 270                         if (rdev->accel_working) {
 271                                 if (rdev->new_fw)
 272                                         *value = 3;
 273                                 else
 274                                         *value = 2;
 275                         } else {
 276                                 *value = 0;
 277                         }
 278                 } else {
 279                         *value = rdev->accel_working;
 280                 }
 281                 break;
 282         case RADEON_INFO_TILING_CONFIG:
 283                 if (rdev->family >= CHIP_BONAIRE)
 284                         *value = rdev->config.cik.tile_config;
 285                 else if (rdev->family >= CHIP_TAHITI)
 286                         *value = rdev->config.si.tile_config;
 287                 else if (rdev->family >= CHIP_CAYMAN)
 288                         *value = rdev->config.cayman.tile_config;
 289                 else if (rdev->family >= CHIP_CEDAR)
 290                         *value = rdev->config.evergreen.tile_config;
 291                 else if (rdev->family >= CHIP_RV770)
 292                         *value = rdev->config.rv770.tile_config;
 293                 else if (rdev->family >= CHIP_R600)
 294                         *value = rdev->config.r600.tile_config;
 295                 else {
 296                         DRM_DEBUG_KMS("tiling config is r6xx+ only!\n");
 297                         return -EINVAL;
 298                 }
 299                 break;
 300         case RADEON_INFO_WANT_HYPERZ:
 301                 /* The "value" here is both an input and output parameter.
 302                  * If the input value is 1, filp requests hyper-z access.
 303                  * If the input value is 0, filp revokes its hyper-z access.
 304                  *
 305                  * When returning, the value is 1 if filp owns hyper-z access,
 306                  * 0 otherwise. */
 307                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 308                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 309                         return -EFAULT;
 310                 }
 311                 if (*value >= 2) {
 312                         DRM_DEBUG_KMS("WANT_HYPERZ: invalid value %d\n", *value);
 313                         return -EINVAL;
 314                 }
 315                 radeon_set_filp_rights(dev, &rdev->hyperz_filp, filp, value);
 316                 break;
 317         case RADEON_INFO_WANT_CMASK:
 318                 /* The same logic as Hyper-Z. */
 319                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 320                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 321                         return -EFAULT;
 322                 }
 323                 if (*value >= 2) {
 324                         DRM_DEBUG_KMS("WANT_CMASK: invalid value %d\n", *value);
 325                         return -EINVAL;
 326                 }
 327                 radeon_set_filp_rights(dev, &rdev->cmask_filp, filp, value);
 328                 break;
 329         case RADEON_INFO_CLOCK_CRYSTAL_FREQ:
 330                 /* return clock value in KHz */
 331                 if (rdev->asic->get_xclk)
 332                         *value = radeon_get_xclk(rdev) * 10;
 333                 else
 334                         *value = rdev->clock.spll.reference_freq * 10;
 335                 break;
 336         case RADEON_INFO_NUM_BACKENDS:
 337                 if (rdev->family >= CHIP_BONAIRE)
 338                         *value = rdev->config.cik.max_backends_per_se *
 339                                 rdev->config.cik.max_shader_engines;
 340                 else if (rdev->family >= CHIP_TAHITI)
 341                         *value = rdev->config.si.max_backends_per_se *
 342                                 rdev->config.si.max_shader_engines;
 343                 else if (rdev->family >= CHIP_CAYMAN)
 344                         *value = rdev->config.cayman.max_backends_per_se *
 345                                 rdev->config.cayman.max_shader_engines;
 346                 else if (rdev->family >= CHIP_CEDAR)
 347                         *value = rdev->config.evergreen.max_backends;
 348                 else if (rdev->family >= CHIP_RV770)
 349                         *value = rdev->config.rv770.max_backends;
 350                 else if (rdev->family >= CHIP_R600)
 351                         *value = rdev->config.r600.max_backends;
 352                 else {
 353                         return -EINVAL;
 354                 }
 355                 break;
 356         case RADEON_INFO_NUM_TILE_PIPES:
 357                 if (rdev->family >= CHIP_BONAIRE)
 358                         *value = rdev->config.cik.max_tile_pipes;
 359                 else if (rdev->family >= CHIP_TAHITI)
 360                         *value = rdev->config.si.max_tile_pipes;
 361                 else if (rdev->family >= CHIP_CAYMAN)
 362                         *value = rdev->config.cayman.max_tile_pipes;
 363                 else if (rdev->family >= CHIP_CEDAR)
 364                         *value = rdev->config.evergreen.max_tile_pipes;
 365                 else if (rdev->family >= CHIP_RV770)
 366                         *value = rdev->config.rv770.max_tile_pipes;
 367                 else if (rdev->family >= CHIP_R600)
 368                         *value = rdev->config.r600.max_tile_pipes;
 369                 else {
 370                         return -EINVAL;
 371                 }
 372                 break;
 373         case RADEON_INFO_FUSION_GART_WORKING:
 374                 *value = 1;
 375                 break;
 376         case RADEON_INFO_BACKEND_MAP:
 377                 if (rdev->family >= CHIP_BONAIRE)
 378                         *value = rdev->config.cik.backend_map;
 379                 else if (rdev->family >= CHIP_TAHITI)
 380                         *value = rdev->config.si.backend_map;
 381                 else if (rdev->family >= CHIP_CAYMAN)
 382                         *value = rdev->config.cayman.backend_map;
 383                 else if (rdev->family >= CHIP_CEDAR)
 384                         *value = rdev->config.evergreen.backend_map;
 385                 else if (rdev->family >= CHIP_RV770)
 386                         *value = rdev->config.rv770.backend_map;
 387                 else if (rdev->family >= CHIP_R600)
 388                         *value = rdev->config.r600.backend_map;
 389                 else {
 390                         return -EINVAL;
 391                 }
 392                 break;
 393         case RADEON_INFO_VA_START:
 394                 /* this is where we report if vm is supported or not */
 395                 if (rdev->family < CHIP_CAYMAN)
 396                         return -EINVAL;
 397                 *value = RADEON_VA_RESERVED_SIZE;
 398                 break;
 399         case RADEON_INFO_IB_VM_MAX_SIZE:
 400                 /* this is where we report if vm is supported or not */
 401                 if (rdev->family < CHIP_CAYMAN)
 402                         return -EINVAL;
 403                 *value = RADEON_IB_VM_MAX_SIZE;
 404                 break;
 405         case RADEON_INFO_MAX_PIPES:
 406                 if (rdev->family >= CHIP_BONAIRE)
 407                         *value = rdev->config.cik.max_cu_per_sh;
 408                 else if (rdev->family >= CHIP_TAHITI)
 409                         *value = rdev->config.si.max_cu_per_sh;
 410                 else if (rdev->family >= CHIP_CAYMAN)
 411                         *value = rdev->config.cayman.max_pipes_per_simd;
 412                 else if (rdev->family >= CHIP_CEDAR)
 413                         *value = rdev->config.evergreen.max_pipes;
 414                 else if (rdev->family >= CHIP_RV770)
 415                         *value = rdev->config.rv770.max_pipes;
 416                 else if (rdev->family >= CHIP_R600)
 417                         *value = rdev->config.r600.max_pipes;
 418                 else {
 419                         return -EINVAL;
 420                 }
 421                 break;
 422         case RADEON_INFO_TIMESTAMP:
 423                 if (rdev->family < CHIP_R600) {
 424                         DRM_DEBUG_KMS("timestamp is r6xx+ only!\n");
 425                         return -EINVAL;
 426                 }
 427                 value = (uint32_t*)&value64;
 428                 value_size = sizeof(uint64_t);
 429                 value64 = radeon_get_gpu_clock_counter(rdev);
 430                 break;
 431         case RADEON_INFO_MAX_SE:
 432                 if (rdev->family >= CHIP_BONAIRE)
 433                         *value = rdev->config.cik.max_shader_engines;
 434                 else if (rdev->family >= CHIP_TAHITI)
 435                         *value = rdev->config.si.max_shader_engines;
 436                 else if (rdev->family >= CHIP_CAYMAN)
 437                         *value = rdev->config.cayman.max_shader_engines;
 438                 else if (rdev->family >= CHIP_CEDAR)
 439                         *value = rdev->config.evergreen.num_ses;
 440                 else
 441                         *value = 1;
 442                 break;
 443         case RADEON_INFO_MAX_SH_PER_SE:
 444                 if (rdev->family >= CHIP_BONAIRE)
 445                         *value = rdev->config.cik.max_sh_per_se;
 446                 else if (rdev->family >= CHIP_TAHITI)
 447                         *value = rdev->config.si.max_sh_per_se;
 448                 else
 449                         return -EINVAL;
 450                 break;
 451         case RADEON_INFO_FASTFB_WORKING:
 452                 *value = rdev->fastfb_working;
 453                 break;
 454         case RADEON_INFO_RING_WORKING:
 455                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 456                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 457                         return -EFAULT;
 458                 }
 459                 switch (*value) {
 460                 case RADEON_CS_RING_GFX:
 461                 case RADEON_CS_RING_COMPUTE:
 462                         *value = rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready;
 463                         break;
 464                 case RADEON_CS_RING_DMA:
 465                         *value = rdev->ring[R600_RING_TYPE_DMA_INDEX].ready;
 466                         *value |= rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready;
 467                         break;
 468                 case RADEON_CS_RING_UVD:
 469                         *value = rdev->ring[R600_RING_TYPE_UVD_INDEX].ready;
 470                         break;
 471                 case RADEON_CS_RING_VCE:
 472                         *value = rdev->ring[TN_RING_TYPE_VCE1_INDEX].ready;
 473                         break;
 474                 default:
 475                         return -EINVAL;
 476                 }
 477                 break;
 478         case RADEON_INFO_SI_TILE_MODE_ARRAY:
 479                 if (rdev->family >= CHIP_BONAIRE) {
 480                         value = rdev->config.cik.tile_mode_array;
 481                         value_size = sizeof(uint32_t)*32;
 482                 } else if (rdev->family >= CHIP_TAHITI) {
 483                         value = rdev->config.si.tile_mode_array;
 484                         value_size = sizeof(uint32_t)*32;
 485                 } else {
 486                         DRM_DEBUG_KMS("tile mode array is si+ only!\n");
 487                         return -EINVAL;
 488                 }
 489                 break;
 490         case RADEON_INFO_CIK_MACROTILE_MODE_ARRAY:
 491                 if (rdev->family >= CHIP_BONAIRE) {
 492                         value = rdev->config.cik.macrotile_mode_array;
 493                         value_size = sizeof(uint32_t)*16;
 494                 } else {
 495                         DRM_DEBUG_KMS("macrotile mode array is cik+ only!\n");
 496                         return -EINVAL;
 497                 }
 498                 break;
 499         case RADEON_INFO_SI_CP_DMA_COMPUTE:
 500                 *value = 1;
 501                 break;
 502         case RADEON_INFO_SI_BACKEND_ENABLED_MASK:
 503                 if (rdev->family >= CHIP_BONAIRE) {
 504                         *value = rdev->config.cik.backend_enable_mask;
 505                 } else if (rdev->family >= CHIP_TAHITI) {
 506                         *value = rdev->config.si.backend_enable_mask;
 507                 } else {
 508                         DRM_DEBUG_KMS("BACKEND_ENABLED_MASK is si+ only!\n");
 509                 }
 510                 break;
 511         case RADEON_INFO_MAX_SCLK:
 512                 if ((rdev->pm.pm_method == PM_METHOD_DPM) &&
 513                     rdev->pm.dpm_enabled)
 514                         *value = rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk * 10;
 515                 else
 516                         *value = rdev->pm.default_sclk * 10;
 517                 break;
 518         case RADEON_INFO_VCE_FW_VERSION:
 519                 *value = rdev->vce.fw_version;
 520                 break;
 521         case RADEON_INFO_VCE_FB_VERSION:
 522                 *value = rdev->vce.fb_version;
 523                 break;
 524         case RADEON_INFO_NUM_BYTES_MOVED:
 525                 value = (uint32_t*)&value64;
 526                 value_size = sizeof(uint64_t);
 527                 value64 = atomic64_read(&rdev->num_bytes_moved);
 528                 break;
 529         case RADEON_INFO_VRAM_USAGE:
 530                 value = (uint32_t*)&value64;
 531                 value_size = sizeof(uint64_t);
 532                 value64 = atomic64_read(&rdev->vram_usage);
 533                 break;
 534         case RADEON_INFO_GTT_USAGE:
 535                 value = (uint32_t*)&value64;
 536                 value_size = sizeof(uint64_t);
 537                 value64 = atomic64_read(&rdev->gtt_usage);
 538                 break;
 539         case RADEON_INFO_ACTIVE_CU_COUNT:
 540                 if (rdev->family >= CHIP_BONAIRE)
 541                         *value = rdev->config.cik.active_cus;
 542                 else if (rdev->family >= CHIP_TAHITI)
 543                         *value = rdev->config.si.active_cus;
 544                 else if (rdev->family >= CHIP_CAYMAN)
 545                         *value = rdev->config.cayman.active_simds;
 546                 else if (rdev->family >= CHIP_CEDAR)
 547                         *value = rdev->config.evergreen.active_simds;
 548                 else if (rdev->family >= CHIP_RV770)
 549                         *value = rdev->config.rv770.active_simds;
 550                 else if (rdev->family >= CHIP_R600)
 551                         *value = rdev->config.r600.active_simds;
 552                 else
 553                         *value = 1;
 554                 break;
 555         case RADEON_INFO_CURRENT_GPU_TEMP:
 556                 /* get temperature in millidegrees C */
 557                 if (rdev->asic->pm.get_temperature)
 558                         *value = radeon_get_temperature(rdev);
 559                 else
 560                         *value = 0;
 561                 break;
 562         case RADEON_INFO_CURRENT_GPU_SCLK:
 563                 /* get sclk in Mhz */
 564                 if (rdev->pm.dpm_enabled)
 565                         *value = radeon_dpm_get_current_sclk(rdev) / 100;
 566                 else
 567                         *value = rdev->pm.current_sclk / 100;
 568                 break;
 569         case RADEON_INFO_CURRENT_GPU_MCLK:
 570                 /* get mclk in Mhz */
 571                 if (rdev->pm.dpm_enabled)
 572                         *value = radeon_dpm_get_current_mclk(rdev) / 100;
 573                 else
 574                         *value = rdev->pm.current_mclk / 100;
 575                 break;
 576         case RADEON_INFO_READ_REG:
 577                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 578                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 579                         return -EFAULT;
 580                 }
 581                 if (radeon_get_allowed_info_register(rdev, *value, value))
 582                         return -EINVAL;
 583                 break;
 584         case RADEON_INFO_VA_UNMAP_WORKING:
 585                 *value = true;
 586                 break;
 587         case RADEON_INFO_GPU_RESET_COUNTER:
 588                 *value = atomic_read(&rdev->gpu_reset_counter);
 589                 break;
 590         default:
 591                 DRM_DEBUG_KMS("Invalid request %d\n", info->request);
 592                 return -EINVAL;
 593         }
 594         if (copy_to_user(value_ptr, (char*)value, value_size)) {
 595                 DRM_ERROR("copy_to_user %s:%u\n", __func__, __LINE__);
 596                 return -EFAULT;
 597         }
 598         return 0;
 599 }
 600
 601
 602 /*
 603  * Outdated mess for old drm with Xorg being in charge (void function now).
 604  */
 605 /**
 606  * radeon_driver_lastclose_kms - drm callback for last close
 607  *
 608  * @dev: drm dev pointer
 609  *
 610  * Switch vga_switcheroo state after last close (all asics).
 611  */
 612 void radeon_driver_lastclose_kms(struct drm_device *dev)
 613 {
 614         drm_fb_helper_lastclose(dev);
 615         vga_switcheroo_process_delayed_switch();
 616 }
 617
 618 /**
 619  * radeon_driver_open_kms - drm callback for open
 620  *
 621  * @dev: drm dev pointer
 622  * @file_priv: drm file
 623  *
 624  * On device open, init vm on cayman+ (all asics).
 625  * Returns 0 on success, error on failure.
 626  */
 627 int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 628 {
 629         struct radeon_device *rdev = dev->dev_private;
 630         int r;
 631
 632         file_priv->driver_priv = NULL;
 633
 634         r = pm_runtime_get_sync(dev->dev);
 635         if (r < 0)
 636                 return r;
 637
 638         /* new gpu have virtual address space support */
 639         if (rdev->family >= CHIP_CAYMAN) {
 640                 struct radeon_fpriv *fpriv;
 641                 struct radeon_vm *vm;
 642
 643                 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
 644                 if (unlikely(!fpriv)) {
 645                         r = -ENOMEM;
 646                         goto out_suspend;
 647                 }
 648
 649                 if (rdev->accel_working) {
 650                         vm = &fpriv->vm;
 651                         r = radeon_vm_init(rdev, vm);
 652                         if (r) {
 653                                 kfree(fpriv);
 654                                 goto out_suspend;
 655                         }
 656
 657                         r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 658                         if (r) {
 659                                 radeon_vm_fini(rdev, vm);
 660                                 kfree(fpriv);
 661                                 goto out_suspend;
 662                         }
 663
 664                         /* map the ib pool buffer read only into
 665                          * virtual address space */
 666                         vm->ib_bo_va = radeon_vm_bo_add(rdev, vm,
 667                                                         rdev->ring_tmp_bo.bo);
 668                         r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va,
 669                                                   RADEON_VA_IB_OFFSET,
 670                                                   RADEON_VM_PAGE_READABLE |
 671                                                   RADEON_VM_PAGE_SNOOPED);
 672                         if (r) {
 673                                 radeon_vm_fini(rdev, vm);
 674                                 kfree(fpriv);
 675                                 goto out_suspend;
 676                         }
 677                 }
 678                 file_priv->driver_priv = fpriv;
 679         }
 680
 681 out_suspend:
 682         pm_runtime_mark_last_busy(dev->dev);
 683         pm_runtime_put_autosuspend(dev->dev);
 684         return r;
 685 }
 686
 687 /**
 688  * radeon_driver_postclose_kms - drm callback for post close
 689  *
 690  * @dev: drm dev pointer
 691  * @file_priv: drm file
 692  *
 693  * On device close, tear down hyperz and cmask filps on r1xx-r5xx
 694  * (all asics).  And tear down vm on cayman+ (all asics).
 695  */
 696 void radeon_driver_postclose_kms(struct drm_device *dev,
 697                                  struct drm_file *file_priv)
 698 {
 699         struct radeon_device *rdev = dev->dev_private;
 700
 701         pm_runtime_get_sync(dev->dev);
 702
 703         mutex_lock(&rdev->gem.mutex);
 704         if (rdev->hyperz_filp == file_priv)
 705                 rdev->hyperz_filp = NULL;
 706         if (rdev->cmask_filp == file_priv)
 707                 rdev->cmask_filp = NULL;
 708         mutex_unlock(&rdev->gem.mutex);
 709
 710         radeon_uvd_free_handles(rdev, file_priv);
 711         radeon_vce_free_handles(rdev, file_priv);
 712
 713         /* new gpu have virtual address space support */
 714         if (rdev->family >= CHIP_CAYMAN && file_priv->driver_priv) {
 715                 struct radeon_fpriv *fpriv = file_priv->driver_priv;
 716                 struct radeon_vm *vm = &fpriv->vm;
 717                 int r;
 718
 719                 if (rdev->accel_working) {
 720                         r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 721                         if (!r) {
 722                                 if (vm->ib_bo_va)
 723                                         radeon_vm_bo_rmv(rdev, vm->ib_bo_va);
 724                                 radeon_bo_unreserve(rdev->ring_tmp_bo.bo);
 725                         }
 726                         radeon_vm_fini(rdev, vm);
 727                 }
 728
 729                 kfree(fpriv);
 730                 file_priv->driver_priv = NULL;
 731         }
 732         pm_runtime_mark_last_busy(dev->dev);
 733         pm_runtime_put_autosuspend(dev->dev);
 734 }
 735
 736 /*
 737  * VBlank related functions.
 738  */
 739 /**
 740  * radeon_get_vblank_counter_kms - get frame count
 741  *
 742  * @dev: drm dev pointer
 743  * @pipe: crtc to get the frame count from
 744  *
 745  * Gets the frame count on the requested crtc (all asics).
 746  * Returns frame count on success, -EINVAL on failure.
 747  */
 748 u32 radeon_get_vblank_counter_kms(struct drm_device *dev, unsigned int pipe)
 749 {
 750         int vpos, hpos, stat;
 751         u32 count;
 752         struct radeon_device *rdev = dev->dev_private;
 753
 754         if (pipe >= rdev->num_crtc) {
 755                 DRM_ERROR("Invalid crtc %u\n", pipe);
 756                 return -EINVAL;
 757         }
 758
 759         /* The hw increments its frame counter at start of vsync, not at start
 760          * of vblank, as is required by DRM core vblank counter handling.
 761          * Cook the hw count here to make it appear to the caller as if it
 762          * incremented at start of vblank. We measure distance to start of
 763          * vblank in vpos. vpos therefore will be >= 0 between start of vblank
 764          * and start of vsync, so vpos >= 0 means to bump the hw frame counter
 765          * result by 1 to give the proper appearance to caller.
 766          */
 767         if (rdev->mode_info.crtcs[pipe]) {
 768                 /* Repeat readout if needed to provide stable result if
 769                  * we cross start of vsync during the queries.
 770                  */
 771                 do {
 772                         count = radeon_get_vblank_counter(rdev, pipe);
 773                         /* Ask radeon_get_crtc_scanoutpos to return vpos as
 774                          * distance to start of vblank, instead of regular
 775                          * vertical scanout pos.
 776                          */
 777                         stat = radeon_get_crtc_scanoutpos(
 778                                 dev, pipe, GET_DISTANCE_TO_VBLANKSTART,
 779                                 &vpos, &hpos, NULL, NULL,
 780                                 &rdev->mode_info.crtcs[pipe]->base.hwmode);
 781                 } while (count != radeon_get_vblank_counter(rdev, pipe));
 782
 783                 if (((stat & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE)) !=
 784                     (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE))) {
 785                         DRM_DEBUG_VBL("Query failed! stat %d\n", stat);
 786                 }
 787                 else {
 788                         DRM_DEBUG_VBL("crtc %u: dist from vblank start %d\n",
 789                                       pipe, vpos);
 790
 791                         /* Bump counter if we are at >= leading edge of vblank,
 792                          * but before vsync where vpos would turn negative and
 793                          * the hw counter really increments.
 794                          */
 795                         if (vpos >= 0)
 796                                 count++;
 797                 }
 798         }
 799         else {
 800             /* Fallback to use value as is. */
 801             count = radeon_get_vblank_counter(rdev, pipe);
 802             DRM_DEBUG_VBL("NULL mode info! Returned count may be wrong.\n");
 803         }
 804
 805         return count;
 806 }
 807
 808 /**
 809  * radeon_enable_vblank_kms - enable vblank interrupt
 810  *
 811  * @dev: drm dev pointer
 812  * @crtc: crtc to enable vblank interrupt for
 813  *
 814  * Enable the interrupt on the requested crtc (all asics).
 815  * Returns 0 on success, -EINVAL on failure.
 816  */
 817 int radeon_enable_vblank_kms(struct drm_device *dev, int crtc)
 818 {
 819         struct radeon_device *rdev = dev->dev_private;
 820         unsigned long irqflags;
 821         int r;
 822
 823         if (crtc < 0 || crtc >= rdev->num_crtc) {
 824                 DRM_ERROR("Invalid crtc %d\n", crtc);
 825                 return -EINVAL;
 826         }
 827
 828         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 829         rdev->irq.crtc_vblank_int[crtc] = true;
 830         r = radeon_irq_set(rdev);
 831         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 832         return r;
 833 }
 834
 835 /**
 836  * radeon_disable_vblank_kms - disable vblank interrupt
 837  *
 838  * @dev: drm dev pointer
 839  * @crtc: crtc to disable vblank interrupt for
 840  *
 841  * Disable the interrupt on the requested crtc (all asics).
 842  */
 843 void radeon_disable_vblank_kms(struct drm_device *dev, int crtc)
 844 {
 845         struct radeon_device *rdev = dev->dev_private;
 846         unsigned long irqflags;
 847
 848         if (crtc < 0 || crtc >= rdev->num_crtc) {
 849                 DRM_ERROR("Invalid crtc %d\n", crtc);
 850                 return;
 851         }
 852
 853         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 854         rdev->irq.crtc_vblank_int[crtc] = false;
 855         radeon_irq_set(rdev);
 856         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 857 }
 858
 859 const struct drm_ioctl_desc radeon_ioctls_kms[] = {
 860         DRM_IOCTL_DEF_DRV(RADEON_CP_INIT, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 861         DRM_IOCTL_DEF_DRV(RADEON_CP_START, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 862         DRM_IOCTL_DEF_DRV(RADEON_CP_STOP, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 863         DRM_IOCTL_DEF_DRV(RADEON_CP_RESET, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 864         DRM_IOCTL_DEF_DRV(RADEON_CP_IDLE, drm_invalid_op, DRM_AUTH),
 865         DRM_IOCTL_DEF_DRV(RADEON_CP_RESUME, drm_invalid_op, DRM_AUTH),
 866         DRM_IOCTL_DEF_DRV(RADEON_RESET, drm_invalid_op, DRM_AUTH),
 867         DRM_IOCTL_DEF_DRV(RADEON_FULLSCREEN, drm_invalid_op, DRM_AUTH),
 868         DRM_IOCTL_DEF_DRV(RADEON_SWAP, drm_invalid_op, DRM_AUTH),
 869         DRM_IOCTL_DEF_DRV(RADEON_CLEAR, drm_invalid_op, DRM_AUTH),
 870         DRM_IOCTL_DEF_DRV(RADEON_VERTEX, drm_invalid_op, DRM_AUTH),
 871         DRM_IOCTL_DEF_DRV(RADEON_INDICES, drm_invalid_op, DRM_AUTH),
 872         DRM_IOCTL_DEF_DRV(RADEON_TEXTURE, drm_invalid_op, DRM_AUTH),
 873         DRM_IOCTL_DEF_DRV(RADEON_STIPPLE, drm_invalid_op, DRM_AUTH),
 874         DRM_IOCTL_DEF_DRV(RADEON_INDIRECT, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 875         DRM_IOCTL_DEF_DRV(RADEON_VERTEX2, drm_invalid_op, DRM_AUTH),
 876         DRM_IOCTL_DEF_DRV(RADEON_CMDBUF, drm_invalid_op, DRM_AUTH),
 877         DRM_IOCTL_DEF_DRV(RADEON_GETPARAM, drm_invalid_op, DRM_AUTH),
 878         DRM_IOCTL_DEF_DRV(RADEON_FLIP, drm_invalid_op, DRM_AUTH),
 879         DRM_IOCTL_DEF_DRV(RADEON_ALLOC, drm_invalid_op, DRM_AUTH),
 880         DRM_IOCTL_DEF_DRV(RADEON_FREE, drm_invalid_op, DRM_AUTH),
 881         DRM_IOCTL_DEF_DRV(RADEON_INIT_HEAP, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 882         DRM_IOCTL_DEF_DRV(RADEON_IRQ_EMIT, drm_invalid_op, DRM_AUTH),
 883         DRM_IOCTL_DEF_DRV(RADEON_IRQ_WAIT, drm_invalid_op, DRM_AUTH),
 884         DRM_IOCTL_DEF_DRV(RADEON_SETPARAM, drm_invalid_op, DRM_AUTH),
 885         DRM_IOCTL_DEF_DRV(RADEON_SURF_ALLOC, drm_invalid_op, DRM_AUTH),
 886         DRM_IOCTL_DEF_DRV(RADEON_SURF_FREE, drm_invalid_op, DRM_AUTH),
 887         /* KMS */
 888         DRM_IOCTL_DEF_DRV(RADEON_GEM_INFO, radeon_gem_info_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 889         DRM_IOCTL_DEF_DRV(RADEON_GEM_CREATE, radeon_gem_create_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 890         DRM_IOCTL_DEF_DRV(RADEON_GEM_MMAP, radeon_gem_mmap_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 891         DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_DOMAIN, radeon_gem_set_domain_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 892         DRM_IOCTL_DEF_DRV(RADEON_GEM_PREAD, radeon_gem_pread_ioctl, DRM_AUTH),
 893         DRM_IOCTL_DEF_DRV(RADEON_GEM_PWRITE, radeon_gem_pwrite_ioctl, DRM_AUTH),
 894         DRM_IOCTL_DEF_DRV(RADEON_GEM_WAIT_IDLE, radeon_gem_wait_idle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 895         DRM_IOCTL_DEF_DRV(RADEON_CS, radeon_cs_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 896         DRM_IOCTL_DEF_DRV(RADEON_INFO, radeon_info_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 897         DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_TILING, radeon_gem_set_tiling_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 898         DRM_IOCTL_DEF_DRV(RADEON_GEM_GET_TILING, radeon_gem_get_tiling_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 899         DRM_IOCTL_DEF_DRV(RADEON_GEM_BUSY, radeon_gem_busy_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 900         DRM_IOCTL_DEF_DRV(RADEON_GEM_VA, radeon_gem_va_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 901         DRM_IOCTL_DEF_DRV(RADEON_GEM_OP, radeon_gem_op_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 902         DRM_IOCTL_DEF_DRV(RADEON_GEM_USERPTR, radeon_gem_userptr_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 903 };
 904 int radeon_max_kms_ioctl = ARRAY_SIZE(radeon_ioctls_kms);