root/drivers/gpu/drm/radeon/radeon_kms.c

DEFINITIONS

1. radeon_has_atpx
2. radeon_driver_unload_kms
3. radeon_driver_load_kms
4. radeon_set_filp_rights
5. radeon_info_ioctl
6. radeon_driver_lastclose_kms
7. radeon_driver_open_kms
8. radeon_driver_postclose_kms
9. radeon_get_vblank_counter_kms
10. radeon_enable_vblank_kms
11. radeon_disable_vblank_kms

   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/pm_runtime.h>
  30 #include <linux/slab.h>
  31 #include <linux/uaccess.h>
  32 #include <linux/vga_switcheroo.h>
  33 
  34 #include <drm/drm_agpsupport.h>
  35 #include <drm/drm_fb_helper.h>
  36 #include <drm/drm_file.h>
  37 #include <drm/drm_ioctl.h>
  38 #include <drm/drm_pci.h>
  39 #include <drm/radeon_drm.h>
  40 
  41 #include "radeon.h"
  42 #include "radeon_asic.h"
  43 
  44 #if defined(CONFIG_VGA_SWITCHEROO)
  45 bool radeon_has_atpx(void);
  46 #else
  47 static inline bool radeon_has_atpx(void) { return false; }
  48 #endif
  49 
  50 /**
  51  * radeon_driver_unload_kms - Main unload function for KMS.
  52  *
  53  * @dev: drm dev pointer
  54  *
  55  * This is the main unload function for KMS (all asics).
  56  * It calls radeon_modeset_fini() to tear down the
  57  * displays, and radeon_device_fini() to tear down
  58  * the rest of the device (CP, writeback, etc.).
  59  * Returns 0 on success.
  60  */
  61 void radeon_driver_unload_kms(struct drm_device *dev)
  62 {
  63         struct radeon_device *rdev = dev->dev_private;
  64 
  65         if (rdev == NULL)
  66                 return;
  67 
  68         if (rdev->rmmio == NULL)
  69                 goto done_free;
  70 
  71         if (radeon_is_px(dev)) {
  72                 pm_runtime_get_sync(dev->dev);
  73                 pm_runtime_forbid(dev->dev);
  74         }
  75 
  76         radeon_acpi_fini(rdev);
  77         
  78         radeon_modeset_fini(rdev);
  79         radeon_device_fini(rdev);
  80 
  81         if (dev->agp)
  82                 arch_phys_wc_del(dev->agp->agp_mtrr);
  83         kfree(dev->agp);
  84         dev->agp = NULL;
  85 
  86 done_free:
  87         kfree(rdev);
  88         dev->dev_private = NULL;
  89 }
  90 
  91 /**
  92  * radeon_driver_load_kms - Main load function for KMS.
  93  *
  94  * @dev: drm dev pointer
  95  * @flags: device flags
  96  *
  97  * This is the main load function for KMS (all asics).
  98  * It calls radeon_device_init() to set up the non-display
  99  * parts of the chip (asic init, CP, writeback, etc.), and
 100  * radeon_modeset_init() to set up the display parts
 101  * (crtcs, encoders, hotplug detect, etc.).
 102  * Returns 0 on success, error on failure.
 103  */
 104 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
 105 {
 106         struct radeon_device *rdev;
 107         int r, acpi_status;
 108 
 109         rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
 110         if (rdev == NULL) {
 111                 return -ENOMEM;
 112         }
 113         dev->dev_private = (void *)rdev;
 114 
 115         /* update BUS flag */
 116         if (pci_find_capability(dev->pdev, PCI_CAP_ID_AGP)) {
 117                 flags |= RADEON_IS_AGP;
 118         } else if (pci_is_pcie(dev->pdev)) {
 119                 flags |= RADEON_IS_PCIE;
 120         } else {
 121                 flags |= RADEON_IS_PCI;
 122         }
 123 
 124         if ((radeon_runtime_pm != 0) &&
 125             radeon_has_atpx() &&
 126             ((flags & RADEON_IS_IGP) == 0) &&
 127             !pci_is_thunderbolt_attached(dev->pdev))
 128                 flags |= RADEON_IS_PX;
 129 
 130         /* radeon_device_init should report only fatal error
 131          * like memory allocation failure or iomapping failure,
 132          * or memory manager initialization failure, it must
 133          * properly initialize the GPU MC controller and permit
 134          * VRAM allocation
 135          */
 136         r = radeon_device_init(rdev, dev, dev->pdev, flags);
 137         if (r) {
 138                 dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
 139                 goto out;
 140         }
 141 
 142         /* Again modeset_init should fail only on fatal error
 143          * otherwise it should provide enough functionalities
 144          * for shadowfb to run
 145          */
 146         r = radeon_modeset_init(rdev);
 147         if (r)
 148                 dev_err(&dev->pdev->dev, "Fatal error during modeset init\n");
 149 
 150         /* Call ACPI methods: require modeset init
 151          * but failure is not fatal
 152          */
 153         if (!r) {
 154                 acpi_status = radeon_acpi_init(rdev);
 155                 if (acpi_status)
 156                 dev_dbg(&dev->pdev->dev,
 157                                 "Error during ACPI methods call\n");
 158         }
 159 
 160         if (radeon_is_px(dev)) {
 161                 dev_pm_set_driver_flags(dev->dev, DPM_FLAG_NEVER_SKIP);
 162                 pm_runtime_use_autosuspend(dev->dev);
 163                 pm_runtime_set_autosuspend_delay(dev->dev, 5000);
 164                 pm_runtime_set_active(dev->dev);
 165                 pm_runtime_allow(dev->dev);
 166                 pm_runtime_mark_last_busy(dev->dev);
 167                 pm_runtime_put_autosuspend(dev->dev);
 168         }
 169 
 170 out:
 171         if (r)
 172                 radeon_driver_unload_kms(dev);
 173 
 174 
 175         return r;
 176 }
 177 
 178 /**
 179  * radeon_set_filp_rights - Set filp right.
 180  *
 181  * @dev: drm dev pointer
 182  * @owner: drm file
 183  * @applier: drm file
 184  * @value: value
 185  *
 186  * Sets the filp rights for the device (all asics).
 187  */
 188 static void radeon_set_filp_rights(struct drm_device *dev,
 189                                    struct drm_file **owner,
 190                                    struct drm_file *applier,
 191                                    uint32_t *value)
 192 {
 193         struct radeon_device *rdev = dev->dev_private;
 194 
 195         mutex_lock(&rdev->gem.mutex);
 196         if (*value == 1) {
 197                 /* wants rights */
 198                 if (!*owner)
 199                         *owner = applier;
 200         } else if (*value == 0) {
 201                 /* revokes rights */
 202                 if (*owner == applier)
 203                         *owner = NULL;
 204         }
 205         *value = *owner == applier ? 1 : 0;
 206         mutex_unlock(&rdev->gem.mutex);
 207 }
 208 
 209 /*
 210  * Userspace get information ioctl
 211  */
 212 /**
 213  * radeon_info_ioctl - answer a device specific request.
 214  *
 215  * @rdev: radeon device pointer
 216  * @data: request object
 217  * @filp: drm filp
 218  *
 219  * This function is used to pass device specific parameters to the userspace
 220  * drivers.  Examples include: pci device id, pipeline parms, tiling params,
 221  * etc. (all asics).
 222  * Returns 0 on success, -EINVAL on failure.
 223  */
 224 static int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 225 {
 226         struct radeon_device *rdev = dev->dev_private;
 227         struct drm_radeon_info *info = data;
 228         struct radeon_mode_info *minfo = &rdev->mode_info;
 229         uint32_t *value, value_tmp, *value_ptr, value_size;
 230         uint64_t value64;
 231         struct drm_crtc *crtc;
 232         int i, found;
 233 
 234         value_ptr = (uint32_t *)((unsigned long)info->value);
 235         value = &value_tmp;
 236         value_size = sizeof(uint32_t);
 237 
 238         switch (info->request) {
 239         case RADEON_INFO_DEVICE_ID:
 240                 *value = dev->pdev->device;
 241                 break;
 242         case RADEON_INFO_NUM_GB_PIPES:
 243                 *value = rdev->num_gb_pipes;
 244                 break;
 245         case RADEON_INFO_NUM_Z_PIPES:
 246                 *value = rdev->num_z_pipes;
 247                 break;
 248         case RADEON_INFO_ACCEL_WORKING:
 249                 /* xf86-video-ati 6.13.0 relies on this being false for evergreen */
 250                 if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK))
 251                         *value = false;
 252                 else
 253                         *value = rdev->accel_working;
 254                 break;
 255         case RADEON_INFO_CRTC_FROM_ID:
 256                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 257                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 258                         return -EFAULT;
 259                 }
 260                 for (i = 0, found = 0; i < rdev->num_crtc; i++) {
 261                         crtc = (struct drm_crtc *)minfo->crtcs[i];
 262                         if (crtc && crtc->base.id == *value) {
 263                                 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 264                                 *value = radeon_crtc->crtc_id;
 265                                 found = 1;
 266                                 break;
 267                         }
 268                 }
 269                 if (!found) {
 270                         DRM_DEBUG_KMS("unknown crtc id %d\n", *value);
 271                         return -EINVAL;
 272                 }
 273                 break;
 274         case RADEON_INFO_ACCEL_WORKING2:
 275                 if (rdev->family == CHIP_HAWAII) {
 276                         if (rdev->accel_working) {
 277                                 if (rdev->new_fw)
 278                                         *value = 3;
 279                                 else
 280                                         *value = 2;
 281                         } else {
 282                                 *value = 0;
 283                         }
 284                 } else {
 285                         *value = rdev->accel_working;
 286                 }
 287                 break;
 288         case RADEON_INFO_TILING_CONFIG:
 289                 if (rdev->family >= CHIP_BONAIRE)
 290                         *value = rdev->config.cik.tile_config;
 291                 else if (rdev->family >= CHIP_TAHITI)
 292                         *value = rdev->config.si.tile_config;
 293                 else if (rdev->family >= CHIP_CAYMAN)
 294                         *value = rdev->config.cayman.tile_config;
 295                 else if (rdev->family >= CHIP_CEDAR)
 296                         *value = rdev->config.evergreen.tile_config;
 297                 else if (rdev->family >= CHIP_RV770)
 298                         *value = rdev->config.rv770.tile_config;
 299                 else if (rdev->family >= CHIP_R600)
 300                         *value = rdev->config.r600.tile_config;
 301                 else {
 302                         DRM_DEBUG_KMS("tiling config is r6xx+ only!\n");
 303                         return -EINVAL;
 304                 }
 305                 break;
 306         case RADEON_INFO_WANT_HYPERZ:
 307                 /* The "value" here is both an input and output parameter.
 308                  * If the input value is 1, filp requests hyper-z access.
 309                  * If the input value is 0, filp revokes its hyper-z access.
 310                  *
 311                  * When returning, the value is 1 if filp owns hyper-z access,
 312                  * 0 otherwise. */
 313                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 314                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 315                         return -EFAULT;
 316                 }
 317                 if (*value >= 2) {
 318                         DRM_DEBUG_KMS("WANT_HYPERZ: invalid value %d\n", *value);
 319                         return -EINVAL;
 320                 }
 321                 radeon_set_filp_rights(dev, &rdev->hyperz_filp, filp, value);
 322                 break;
 323         case RADEON_INFO_WANT_CMASK:
 324                 /* The same logic as Hyper-Z. */
 325                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 326                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 327                         return -EFAULT;
 328                 }
 329                 if (*value >= 2) {
 330                         DRM_DEBUG_KMS("WANT_CMASK: invalid value %d\n", *value);
 331                         return -EINVAL;
 332                 }
 333                 radeon_set_filp_rights(dev, &rdev->cmask_filp, filp, value);
 334                 break;
 335         case RADEON_INFO_CLOCK_CRYSTAL_FREQ:
 336                 /* return clock value in KHz */
 337                 if (rdev->asic->get_xclk)
 338                         *value = radeon_get_xclk(rdev) * 10;
 339                 else
 340                         *value = rdev->clock.spll.reference_freq * 10;
 341                 break;
 342         case RADEON_INFO_NUM_BACKENDS:
 343                 if (rdev->family >= CHIP_BONAIRE)
 344                         *value = rdev->config.cik.max_backends_per_se *
 345                                 rdev->config.cik.max_shader_engines;
 346                 else if (rdev->family >= CHIP_TAHITI)
 347                         *value = rdev->config.si.max_backends_per_se *
 348                                 rdev->config.si.max_shader_engines;
 349                 else if (rdev->family >= CHIP_CAYMAN)
 350                         *value = rdev->config.cayman.max_backends_per_se *
 351                                 rdev->config.cayman.max_shader_engines;
 352                 else if (rdev->family >= CHIP_CEDAR)
 353                         *value = rdev->config.evergreen.max_backends;
 354                 else if (rdev->family >= CHIP_RV770)
 355                         *value = rdev->config.rv770.max_backends;
 356                 else if (rdev->family >= CHIP_R600)
 357                         *value = rdev->config.r600.max_backends;
 358                 else {
 359                         return -EINVAL;
 360                 }
 361                 break;
 362         case RADEON_INFO_NUM_TILE_PIPES:
 363                 if (rdev->family >= CHIP_BONAIRE)
 364                         *value = rdev->config.cik.max_tile_pipes;
 365                 else if (rdev->family >= CHIP_TAHITI)
 366                         *value = rdev->config.si.max_tile_pipes;
 367                 else if (rdev->family >= CHIP_CAYMAN)
 368                         *value = rdev->config.cayman.max_tile_pipes;
 369                 else if (rdev->family >= CHIP_CEDAR)
 370                         *value = rdev->config.evergreen.max_tile_pipes;
 371                 else if (rdev->family >= CHIP_RV770)
 372                         *value = rdev->config.rv770.max_tile_pipes;
 373                 else if (rdev->family >= CHIP_R600)
 374                         *value = rdev->config.r600.max_tile_pipes;
 375                 else {
 376                         return -EINVAL;
 377                 }
 378                 break;
 379         case RADEON_INFO_FUSION_GART_WORKING:
 380                 *value = 1;
 381                 break;
 382         case RADEON_INFO_BACKEND_MAP:
 383                 if (rdev->family >= CHIP_BONAIRE)
 384                         *value = rdev->config.cik.backend_map;
 385                 else if (rdev->family >= CHIP_TAHITI)
 386                         *value = rdev->config.si.backend_map;
 387                 else if (rdev->family >= CHIP_CAYMAN)
 388                         *value = rdev->config.cayman.backend_map;
 389                 else if (rdev->family >= CHIP_CEDAR)
 390                         *value = rdev->config.evergreen.backend_map;
 391                 else if (rdev->family >= CHIP_RV770)
 392                         *value = rdev->config.rv770.backend_map;
 393                 else if (rdev->family >= CHIP_R600)
 394                         *value = rdev->config.r600.backend_map;
 395                 else {
 396                         return -EINVAL;
 397                 }
 398                 break;
 399         case RADEON_INFO_VA_START:
 400                 /* this is where we report if vm is supported or not */
 401                 if (rdev->family < CHIP_CAYMAN)
 402                         return -EINVAL;
 403                 *value = RADEON_VA_RESERVED_SIZE;
 404                 break;
 405         case RADEON_INFO_IB_VM_MAX_SIZE:
 406                 /* this is where we report if vm is supported or not */
 407                 if (rdev->family < CHIP_CAYMAN)
 408                         return -EINVAL;
 409                 *value = RADEON_IB_VM_MAX_SIZE;
 410                 break;
 411         case RADEON_INFO_MAX_PIPES:
 412                 if (rdev->family >= CHIP_BONAIRE)
 413                         *value = rdev->config.cik.max_cu_per_sh;
 414                 else if (rdev->family >= CHIP_TAHITI)
 415                         *value = rdev->config.si.max_cu_per_sh;
 416                 else if (rdev->family >= CHIP_CAYMAN)
 417                         *value = rdev->config.cayman.max_pipes_per_simd;
 418                 else if (rdev->family >= CHIP_CEDAR)
 419                         *value = rdev->config.evergreen.max_pipes;
 420                 else if (rdev->family >= CHIP_RV770)
 421                         *value = rdev->config.rv770.max_pipes;
 422                 else if (rdev->family >= CHIP_R600)
 423                         *value = rdev->config.r600.max_pipes;
 424                 else {
 425                         return -EINVAL;
 426                 }
 427                 break;
 428         case RADEON_INFO_TIMESTAMP:
 429                 if (rdev->family < CHIP_R600) {
 430                         DRM_DEBUG_KMS("timestamp is r6xx+ only!\n");
 431                         return -EINVAL;
 432                 }
 433                 value = (uint32_t*)&value64;
 434                 value_size = sizeof(uint64_t);
 435                 value64 = radeon_get_gpu_clock_counter(rdev);
 436                 break;
 437         case RADEON_INFO_MAX_SE:
 438                 if (rdev->family >= CHIP_BONAIRE)
 439                         *value = rdev->config.cik.max_shader_engines;
 440                 else if (rdev->family >= CHIP_TAHITI)
 441                         *value = rdev->config.si.max_shader_engines;
 442                 else if (rdev->family >= CHIP_CAYMAN)
 443                         *value = rdev->config.cayman.max_shader_engines;
 444                 else if (rdev->family >= CHIP_CEDAR)
 445                         *value = rdev->config.evergreen.num_ses;
 446                 else
 447                         *value = 1;
 448                 break;
 449         case RADEON_INFO_MAX_SH_PER_SE:
 450                 if (rdev->family >= CHIP_BONAIRE)
 451                         *value = rdev->config.cik.max_sh_per_se;
 452                 else if (rdev->family >= CHIP_TAHITI)
 453                         *value = rdev->config.si.max_sh_per_se;
 454                 else
 455                         return -EINVAL;
 456                 break;
 457         case RADEON_INFO_FASTFB_WORKING:
 458                 *value = rdev->fastfb_working;
 459                 break;
 460         case RADEON_INFO_RING_WORKING:
 461                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 462                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 463                         return -EFAULT;
 464                 }
 465                 switch (*value) {
 466                 case RADEON_CS_RING_GFX:
 467                 case RADEON_CS_RING_COMPUTE:
 468                         *value = rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready;
 469                         break;
 470                 case RADEON_CS_RING_DMA:
 471                         *value = rdev->ring[R600_RING_TYPE_DMA_INDEX].ready;
 472                         *value |= rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready;
 473                         break;
 474                 case RADEON_CS_RING_UVD:
 475                         *value = rdev->ring[R600_RING_TYPE_UVD_INDEX].ready;
 476                         break;
 477                 case RADEON_CS_RING_VCE:
 478                         *value = rdev->ring[TN_RING_TYPE_VCE1_INDEX].ready;
 479                         break;
 480                 default:
 481                         return -EINVAL;
 482                 }
 483                 break;
 484         case RADEON_INFO_SI_TILE_MODE_ARRAY:
 485                 if (rdev->family >= CHIP_BONAIRE) {
 486                         value = rdev->config.cik.tile_mode_array;
 487                         value_size = sizeof(uint32_t)*32;
 488                 } else if (rdev->family >= CHIP_TAHITI) {
 489                         value = rdev->config.si.tile_mode_array;
 490                         value_size = sizeof(uint32_t)*32;
 491                 } else {
 492                         DRM_DEBUG_KMS("tile mode array is si+ only!\n");
 493                         return -EINVAL;
 494                 }
 495                 break;
 496         case RADEON_INFO_CIK_MACROTILE_MODE_ARRAY:
 497                 if (rdev->family >= CHIP_BONAIRE) {
 498                         value = rdev->config.cik.macrotile_mode_array;
 499                         value_size = sizeof(uint32_t)*16;
 500                 } else {
 501                         DRM_DEBUG_KMS("macrotile mode array is cik+ only!\n");
 502                         return -EINVAL;
 503                 }
 504                 break;
 505         case RADEON_INFO_SI_CP_DMA_COMPUTE:
 506                 *value = 1;
 507                 break;
 508         case RADEON_INFO_SI_BACKEND_ENABLED_MASK:
 509                 if (rdev->family >= CHIP_BONAIRE) {
 510                         *value = rdev->config.cik.backend_enable_mask;
 511                 } else if (rdev->family >= CHIP_TAHITI) {
 512                         *value = rdev->config.si.backend_enable_mask;
 513                 } else {
 514                         DRM_DEBUG_KMS("BACKEND_ENABLED_MASK is si+ only!\n");
 515                 }
 516                 break;
 517         case RADEON_INFO_MAX_SCLK:
 518                 if ((rdev->pm.pm_method == PM_METHOD_DPM) &&
 519                     rdev->pm.dpm_enabled)
 520                         *value = rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk * 10;
 521                 else
 522                         *value = rdev->pm.default_sclk * 10;
 523                 break;
 524         case RADEON_INFO_VCE_FW_VERSION:
 525                 *value = rdev->vce.fw_version;
 526                 break;
 527         case RADEON_INFO_VCE_FB_VERSION:
 528                 *value = rdev->vce.fb_version;
 529                 break;
 530         case RADEON_INFO_NUM_BYTES_MOVED:
 531                 value = (uint32_t*)&value64;
 532                 value_size = sizeof(uint64_t);
 533                 value64 = atomic64_read(&rdev->num_bytes_moved);
 534                 break;
 535         case RADEON_INFO_VRAM_USAGE:
 536                 value = (uint32_t*)&value64;
 537                 value_size = sizeof(uint64_t);
 538                 value64 = atomic64_read(&rdev->vram_usage);
 539                 break;
 540         case RADEON_INFO_GTT_USAGE:
 541                 value = (uint32_t*)&value64;
 542                 value_size = sizeof(uint64_t);
 543                 value64 = atomic64_read(&rdev->gtt_usage);
 544                 break;
 545         case RADEON_INFO_ACTIVE_CU_COUNT:
 546                 if (rdev->family >= CHIP_BONAIRE)
 547                         *value = rdev->config.cik.active_cus;
 548                 else if (rdev->family >= CHIP_TAHITI)
 549                         *value = rdev->config.si.active_cus;
 550                 else if (rdev->family >= CHIP_CAYMAN)
 551                         *value = rdev->config.cayman.active_simds;
 552                 else if (rdev->family >= CHIP_CEDAR)
 553                         *value = rdev->config.evergreen.active_simds;
 554                 else if (rdev->family >= CHIP_RV770)
 555                         *value = rdev->config.rv770.active_simds;
 556                 else if (rdev->family >= CHIP_R600)
 557                         *value = rdev->config.r600.active_simds;
 558                 else
 559                         *value = 1;
 560                 break;
 561         case RADEON_INFO_CURRENT_GPU_TEMP:
 562                 /* get temperature in millidegrees C */
 563                 if (rdev->asic->pm.get_temperature)
 564                         *value = radeon_get_temperature(rdev);
 565                 else
 566                         *value = 0;
 567                 break;
 568         case RADEON_INFO_CURRENT_GPU_SCLK:
 569                 /* get sclk in Mhz */
 570                 if (rdev->pm.dpm_enabled)
 571                         *value = radeon_dpm_get_current_sclk(rdev) / 100;
 572                 else
 573                         *value = rdev->pm.current_sclk / 100;
 574                 break;
 575         case RADEON_INFO_CURRENT_GPU_MCLK:
 576                 /* get mclk in Mhz */
 577                 if (rdev->pm.dpm_enabled)
 578                         *value = radeon_dpm_get_current_mclk(rdev) / 100;
 579                 else
 580                         *value = rdev->pm.current_mclk / 100;
 581                 break;
 582         case RADEON_INFO_READ_REG:
 583                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 584                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 585                         return -EFAULT;
 586                 }
 587                 if (radeon_get_allowed_info_register(rdev, *value, value))
 588                         return -EINVAL;
 589                 break;
 590         case RADEON_INFO_VA_UNMAP_WORKING:
 591                 *value = true;
 592                 break;
 593         case RADEON_INFO_GPU_RESET_COUNTER:
 594                 *value = atomic_read(&rdev->gpu_reset_counter);
 595                 break;
 596         default:
 597                 DRM_DEBUG_KMS("Invalid request %d\n", info->request);
 598                 return -EINVAL;
 599         }
 600         if (copy_to_user(value_ptr, (char*)value, value_size)) {
 601                 DRM_ERROR("copy_to_user %s:%u\n", __func__, __LINE__);
 602                 return -EFAULT;
 603         }
 604         return 0;
 605 }
 606 
 607 
 608 /*
 609  * Outdated mess for old drm with Xorg being in charge (void function now).
 610  */
 611 /**
 612  * radeon_driver_lastclose_kms - drm callback for last close
 613  *
 614  * @dev: drm dev pointer
 615  *
 616  * Switch vga_switcheroo state after last close (all asics).
 617  */
 618 void radeon_driver_lastclose_kms(struct drm_device *dev)
 619 {
 620         drm_fb_helper_lastclose(dev);
 621         vga_switcheroo_process_delayed_switch();
 622 }
 623 
 624 /**
 625  * radeon_driver_open_kms - drm callback for open
 626  *
 627  * @dev: drm dev pointer
 628  * @file_priv: drm file
 629  *
 630  * On device open, init vm on cayman+ (all asics).
 631  * Returns 0 on success, error on failure.
 632  */
 633 int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 634 {
 635         struct radeon_device *rdev = dev->dev_private;
 636         int r;
 637 
 638         file_priv->driver_priv = NULL;
 639 
 640         r = pm_runtime_get_sync(dev->dev);
 641         if (r < 0)
 642                 return r;
 643 
 644         /* new gpu have virtual address space support */
 645         if (rdev->family >= CHIP_CAYMAN) {
 646                 struct radeon_fpriv *fpriv;
 647                 struct radeon_vm *vm;
 648 
 649                 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
 650                 if (unlikely(!fpriv)) {
 651                         r = -ENOMEM;
 652                         goto out_suspend;
 653                 }
 654 
 655                 if (rdev->accel_working) {
 656                         vm = &fpriv->vm;
 657                         r = radeon_vm_init(rdev, vm);
 658                         if (r) {
 659                                 kfree(fpriv);
 660                                 goto out_suspend;
 661                         }
 662 
 663                         r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 664                         if (r) {
 665                                 radeon_vm_fini(rdev, vm);
 666                                 kfree(fpriv);
 667                                 goto out_suspend;
 668                         }
 669 
 670                         /* map the ib pool buffer read only into
 671                          * virtual address space */
 672                         vm->ib_bo_va = radeon_vm_bo_add(rdev, vm,
 673                                                         rdev->ring_tmp_bo.bo);
 674                         r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va,
 675                                                   RADEON_VA_IB_OFFSET,
 676                                                   RADEON_VM_PAGE_READABLE |
 677                                                   RADEON_VM_PAGE_SNOOPED);
 678                         if (r) {
 679                                 radeon_vm_fini(rdev, vm);
 680                                 kfree(fpriv);
 681                                 goto out_suspend;
 682                         }
 683                 }
 684                 file_priv->driver_priv = fpriv;
 685         }
 686 
 687 out_suspend:
 688         pm_runtime_mark_last_busy(dev->dev);
 689         pm_runtime_put_autosuspend(dev->dev);
 690         return r;
 691 }
 692 
 693 /**
 694  * radeon_driver_postclose_kms - drm callback for post close
 695  *
 696  * @dev: drm dev pointer
 697  * @file_priv: drm file
 698  *
 699  * On device close, tear down hyperz and cmask filps on r1xx-r5xx
 700  * (all asics).  And tear down vm on cayman+ (all asics).
 701  */
 702 void radeon_driver_postclose_kms(struct drm_device *dev,
 703                                  struct drm_file *file_priv)
 704 {
 705         struct radeon_device *rdev = dev->dev_private;
 706 
 707         pm_runtime_get_sync(dev->dev);
 708 
 709         mutex_lock(&rdev->gem.mutex);
 710         if (rdev->hyperz_filp == file_priv)
 711                 rdev->hyperz_filp = NULL;
 712         if (rdev->cmask_filp == file_priv)
 713                 rdev->cmask_filp = NULL;
 714         mutex_unlock(&rdev->gem.mutex);
 715 
 716         radeon_uvd_free_handles(rdev, file_priv);
 717         radeon_vce_free_handles(rdev, file_priv);
 718 
 719         /* new gpu have virtual address space support */
 720         if (rdev->family >= CHIP_CAYMAN && file_priv->driver_priv) {
 721                 struct radeon_fpriv *fpriv = file_priv->driver_priv;
 722                 struct radeon_vm *vm = &fpriv->vm;
 723                 int r;
 724 
 725                 if (rdev->accel_working) {
 726                         r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 727                         if (!r) {
 728                                 if (vm->ib_bo_va)
 729                                         radeon_vm_bo_rmv(rdev, vm->ib_bo_va);
 730                                 radeon_bo_unreserve(rdev->ring_tmp_bo.bo);
 731                         }
 732                         radeon_vm_fini(rdev, vm);
 733                 }
 734 
 735                 kfree(fpriv);
 736                 file_priv->driver_priv = NULL;
 737         }
 738         pm_runtime_mark_last_busy(dev->dev);
 739         pm_runtime_put_autosuspend(dev->dev);
 740 }
 741 
 742 /*
 743  * VBlank related functions.
 744  */
 745 /**
 746  * radeon_get_vblank_counter_kms - get frame count
 747  *
 748  * @dev: drm dev pointer
 749  * @pipe: crtc to get the frame count from
 750  *
 751  * Gets the frame count on the requested crtc (all asics).
 752  * Returns frame count on success, -EINVAL on failure.
 753  */
 754 u32 radeon_get_vblank_counter_kms(struct drm_device *dev, unsigned int pipe)
 755 {
 756         int vpos, hpos, stat;
 757         u32 count;
 758         struct radeon_device *rdev = dev->dev_private;
 759 
 760         if (pipe >= rdev->num_crtc) {
 761                 DRM_ERROR("Invalid crtc %u\n", pipe);
 762                 return -EINVAL;
 763         }
 764 
 765         /* The hw increments its frame counter at start of vsync, not at start
 766          * of vblank, as is required by DRM core vblank counter handling.
 767          * Cook the hw count here to make it appear to the caller as if it
 768          * incremented at start of vblank. We measure distance to start of
 769          * vblank in vpos. vpos therefore will be >= 0 between start of vblank
 770          * and start of vsync, so vpos >= 0 means to bump the hw frame counter
 771          * result by 1 to give the proper appearance to caller.
 772          */
 773         if (rdev->mode_info.crtcs[pipe]) {
 774                 /* Repeat readout if needed to provide stable result if
 775                  * we cross start of vsync during the queries.
 776                  */
 777                 do {
 778                         count = radeon_get_vblank_counter(rdev, pipe);
 779                         /* Ask radeon_get_crtc_scanoutpos to return vpos as
 780                          * distance to start of vblank, instead of regular
 781                          * vertical scanout pos.
 782                          */
 783                         stat = radeon_get_crtc_scanoutpos(
 784                                 dev, pipe, GET_DISTANCE_TO_VBLANKSTART,
 785                                 &vpos, &hpos, NULL, NULL,
 786                                 &rdev->mode_info.crtcs[pipe]->base.hwmode);
 787                 } while (count != radeon_get_vblank_counter(rdev, pipe));
 788 
 789                 if (((stat & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE)) !=
 790                     (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE))) {
 791                         DRM_DEBUG_VBL("Query failed! stat %d\n", stat);
 792                 }
 793                 else {
 794                         DRM_DEBUG_VBL("crtc %u: dist from vblank start %d\n",
 795                                       pipe, vpos);
 796 
 797                         /* Bump counter if we are at >= leading edge of vblank,
 798                          * but before vsync where vpos would turn negative and
 799                          * the hw counter really increments.
 800                          */
 801                         if (vpos >= 0)
 802                                 count++;
 803                 }
 804         }
 805         else {
 806             /* Fallback to use value as is. */
 807             count = radeon_get_vblank_counter(rdev, pipe);
 808             DRM_DEBUG_VBL("NULL mode info! Returned count may be wrong.\n");
 809         }
 810 
 811         return count;
 812 }
 813 
 814 /**
 815  * radeon_enable_vblank_kms - enable vblank interrupt
 816  *
 817  * @dev: drm dev pointer
 818  * @crtc: crtc to enable vblank interrupt for
 819  *
 820  * Enable the interrupt on the requested crtc (all asics).
 821  * Returns 0 on success, -EINVAL on failure.
 822  */
 823 int radeon_enable_vblank_kms(struct drm_device *dev, int crtc)
 824 {
 825         struct radeon_device *rdev = dev->dev_private;
 826         unsigned long irqflags;
 827         int r;
 828 
 829         if (crtc < 0 || crtc >= rdev->num_crtc) {
 830                 DRM_ERROR("Invalid crtc %d\n", crtc);
 831                 return -EINVAL;
 832         }
 833 
 834         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 835         rdev->irq.crtc_vblank_int[crtc] = true;
 836         r = radeon_irq_set(rdev);
 837         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 838         return r;
 839 }
 840 
 841 /**
 842  * radeon_disable_vblank_kms - disable vblank interrupt
 843  *
 844  * @dev: drm dev pointer
 845  * @crtc: crtc to disable vblank interrupt for
 846  *
 847  * Disable the interrupt on the requested crtc (all asics).
 848  */
 849 void radeon_disable_vblank_kms(struct drm_device *dev, int crtc)
 850 {
 851         struct radeon_device *rdev = dev->dev_private;
 852         unsigned long irqflags;
 853 
 854         if (crtc < 0 || crtc >= rdev->num_crtc) {
 855                 DRM_ERROR("Invalid crtc %d\n", crtc);
 856                 return;
 857         }
 858 
 859         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 860         rdev->irq.crtc_vblank_int[crtc] = false;
 861         radeon_irq_set(rdev);
 862         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 863 }
 864 
 865 const struct drm_ioctl_desc radeon_ioctls_kms[] = {
 866         DRM_IOCTL_DEF_DRV(RADEON_CP_INIT, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 867         DRM_IOCTL_DEF_DRV(RADEON_CP_START, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 868         DRM_IOCTL_DEF_DRV(RADEON_CP_STOP, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 869         DRM_IOCTL_DEF_DRV(RADEON_CP_RESET, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 870         DRM_IOCTL_DEF_DRV(RADEON_CP_IDLE, drm_invalid_op, DRM_AUTH),
 871         DRM_IOCTL_DEF_DRV(RADEON_CP_RESUME, drm_invalid_op, DRM_AUTH),
 872         DRM_IOCTL_DEF_DRV(RADEON_RESET, drm_invalid_op, DRM_AUTH),
 873         DRM_IOCTL_DEF_DRV(RADEON_FULLSCREEN, drm_invalid_op, DRM_AUTH),
 874         DRM_IOCTL_DEF_DRV(RADEON_SWAP, drm_invalid_op, DRM_AUTH),
 875         DRM_IOCTL_DEF_DRV(RADEON_CLEAR, drm_invalid_op, DRM_AUTH),
 876         DRM_IOCTL_DEF_DRV(RADEON_VERTEX, drm_invalid_op, DRM_AUTH),
 877         DRM_IOCTL_DEF_DRV(RADEON_INDICES, drm_invalid_op, DRM_AUTH),
 878         DRM_IOCTL_DEF_DRV(RADEON_TEXTURE, drm_invalid_op, DRM_AUTH),
 879         DRM_IOCTL_DEF_DRV(RADEON_STIPPLE, drm_invalid_op, DRM_AUTH),
 880         DRM_IOCTL_DEF_DRV(RADEON_INDIRECT, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 881         DRM_IOCTL_DEF_DRV(RADEON_VERTEX2, drm_invalid_op, DRM_AUTH),
 882         DRM_IOCTL_DEF_DRV(RADEON_CMDBUF, drm_invalid_op, DRM_AUTH),
 883         DRM_IOCTL_DEF_DRV(RADEON_GETPARAM, drm_invalid_op, DRM_AUTH),
 884         DRM_IOCTL_DEF_DRV(RADEON_FLIP, drm_invalid_op, DRM_AUTH),
 885         DRM_IOCTL_DEF_DRV(RADEON_ALLOC, drm_invalid_op, DRM_AUTH),
 886         DRM_IOCTL_DEF_DRV(RADEON_FREE, drm_invalid_op, DRM_AUTH),
 887         DRM_IOCTL_DEF_DRV(RADEON_INIT_HEAP, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 888         DRM_IOCTL_DEF_DRV(RADEON_IRQ_EMIT, drm_invalid_op, DRM_AUTH),
 889         DRM_IOCTL_DEF_DRV(RADEON_IRQ_WAIT, drm_invalid_op, DRM_AUTH),
 890         DRM_IOCTL_DEF_DRV(RADEON_SETPARAM, drm_invalid_op, DRM_AUTH),
 891         DRM_IOCTL_DEF_DRV(RADEON_SURF_ALLOC, drm_invalid_op, DRM_AUTH),
 892         DRM_IOCTL_DEF_DRV(RADEON_SURF_FREE, drm_invalid_op, DRM_AUTH),
 893         /* KMS */
 894         DRM_IOCTL_DEF_DRV(RADEON_GEM_INFO, radeon_gem_info_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 895         DRM_IOCTL_DEF_DRV(RADEON_GEM_CREATE, radeon_gem_create_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 896         DRM_IOCTL_DEF_DRV(RADEON_GEM_MMAP, radeon_gem_mmap_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 897         DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_DOMAIN, radeon_gem_set_domain_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 898         DRM_IOCTL_DEF_DRV(RADEON_GEM_PREAD, radeon_gem_pread_ioctl, DRM_AUTH),
 899         DRM_IOCTL_DEF_DRV(RADEON_GEM_PWRITE, radeon_gem_pwrite_ioctl, DRM_AUTH),
 900         DRM_IOCTL_DEF_DRV(RADEON_GEM_WAIT_IDLE, radeon_gem_wait_idle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 901         DRM_IOCTL_DEF_DRV(RADEON_CS, radeon_cs_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 902         DRM_IOCTL_DEF_DRV(RADEON_INFO, radeon_info_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 903         DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_TILING, radeon_gem_set_tiling_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 904         DRM_IOCTL_DEF_DRV(RADEON_GEM_GET_TILING, radeon_gem_get_tiling_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 905         DRM_IOCTL_DEF_DRV(RADEON_GEM_BUSY, radeon_gem_busy_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 906         DRM_IOCTL_DEF_DRV(RADEON_GEM_VA, radeon_gem_va_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 907         DRM_IOCTL_DEF_DRV(RADEON_GEM_OP, radeon_gem_op_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 908         DRM_IOCTL_DEF_DRV(RADEON_GEM_USERPTR, radeon_gem_userptr_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 909 };
 910 int radeon_max_kms_ioctl = ARRAY_SIZE(radeon_ioctls_kms);