drivers/gpu/drm/radeon/radeon_kms.c

   1 /*
   2  * Copyright 2008 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  * Copyright 2009 Jerome Glisse.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors: Dave Airlie
  25  *          Alex Deucher
  26  *          Jerome Glisse
  27  */
  28 #include <drm/drmP.h>
  29 #include "radeon.h"
  30 #include <drm/radeon_drm.h>
  31 #include "radeon_asic.h"
  32
  33 #include <linux/vga_switcheroo.h>
  34 #include <linux/slab.h>
  35 #include <linux/pm_runtime.h>
  36
  37 #include "radeon_kfd.h"
  38
  39 #if defined(CONFIG_VGA_SWITCHEROO)
  40 bool radeon_has_atpx(void);
  41 #else
  42 static inline bool radeon_has_atpx(void) { return false; }
  43 #endif
  44
  45 /**
  46  * radeon_driver_unload_kms - Main unload function for KMS.
  47  *
  48  * @dev: drm dev pointer
  49  *
  50  * This is the main unload function for KMS (all asics).
  51  * It calls radeon_modeset_fini() to tear down the
  52  * displays, and radeon_device_fini() to tear down
  53  * the rest of the device (CP, writeback, etc.).
  54  * Returns 0 on success.
  55  */
  56 int radeon_driver_unload_kms(struct drm_device *dev)
  57 {
  58         struct radeon_device *rdev = dev->dev_private;
  59
  60         if (rdev == NULL)
  61                 return 0;
  62
  63         if (rdev->rmmio == NULL)
  64                 goto done_free;
  65
  66         if (radeon_is_px(dev)) {
  67                 pm_runtime_get_sync(dev->dev);
  68                 pm_runtime_forbid(dev->dev);
  69         }
  70
  71         radeon_kfd_device_fini(rdev);
  72
  73         radeon_acpi_fini(rdev);
  74
  75         radeon_modeset_fini(rdev);
  76         radeon_device_fini(rdev);
  77
  78 done_free:
  79         kfree(rdev);
  80         dev->dev_private = NULL;
  81         return 0;
  82 }
  83
  84 /**
  85  * radeon_driver_load_kms - Main load function for KMS.
  86  *
  87  * @dev: drm dev pointer
  88  * @flags: device flags
  89  *
  90  * This is the main load function for KMS (all asics).
  91  * It calls radeon_device_init() to set up the non-display
  92  * parts of the chip (asic init, CP, writeback, etc.), and
  93  * radeon_modeset_init() to set up the display parts
  94  * (crtcs, encoders, hotplug detect, etc.).
  95  * Returns 0 on success, error on failure.
  96  */
  97 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
  98 {
  99         struct radeon_device *rdev;
 100         int r, acpi_status;
 101
 102         rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
 103         if (rdev == NULL) {
 104                 return -ENOMEM;
 105         }
 106         dev->dev_private = (void *)rdev;
 107
 108         /* update BUS flag */
 109         if (drm_pci_device_is_agp(dev)) {
 110                 flags |= RADEON_IS_AGP;
 111         } else if (pci_is_pcie(dev->pdev)) {
 112                 flags |= RADEON_IS_PCIE;
 113         } else {
 114                 flags |= RADEON_IS_PCI;
 115         }
 116
 117         if ((radeon_runtime_pm != 0) &&
 118             radeon_has_atpx() &&
 119             ((flags & RADEON_IS_IGP) == 0))
 120                 flags |= RADEON_IS_PX;
 121
 122         /* radeon_device_init should report only fatal error
 123          * like memory allocation failure or iomapping failure,
 124          * or memory manager initialization failure, it must
 125          * properly initialize the GPU MC controller and permit
 126          * VRAM allocation
 127          */
 128         r = radeon_device_init(rdev, dev, dev->pdev, flags);
 129         if (r) {
 130                 dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
 131                 goto out;
 132         }
 133
 134         /* Again modeset_init should fail only on fatal error
 135          * otherwise it should provide enough functionalities
 136          * for shadowfb to run
 137          */
 138         r = radeon_modeset_init(rdev);
 139         if (r)
 140                 dev_err(&dev->pdev->dev, "Fatal error during modeset init\n");
 141
 142         /* Call ACPI methods: require modeset init
 143          * but failure is not fatal
 144          */
 145         if (!r) {
 146                 acpi_status = radeon_acpi_init(rdev);
 147                 if (acpi_status)
 148                 dev_dbg(&dev->pdev->dev,
 149                                 "Error during ACPI methods call\n");
 150         }
 151
 152         radeon_kfd_device_probe(rdev);
 153         radeon_kfd_device_init(rdev);
 154
 155         if (radeon_is_px(dev)) {
 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                         return -EINVAL;
 510                 }
 511                 break;
 512         case RADEON_INFO_MAX_SCLK:
 513                 if ((rdev->pm.pm_method == PM_METHOD_DPM) &&
 514                     rdev->pm.dpm_enabled)
 515                         *value = rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk * 10;
 516                 else
 517                         *value = rdev->pm.default_sclk * 10;
 518                 break;
 519         case RADEON_INFO_VCE_FW_VERSION:
 520                 *value = rdev->vce.fw_version;
 521                 break;
 522         case RADEON_INFO_VCE_FB_VERSION:
 523                 *value = rdev->vce.fb_version;
 524                 break;
 525         case RADEON_INFO_NUM_BYTES_MOVED:
 526                 value = (uint32_t*)&value64;
 527                 value_size = sizeof(uint64_t);
 528                 value64 = atomic64_read(&rdev->num_bytes_moved);
 529                 break;
 530         case RADEON_INFO_VRAM_USAGE:
 531                 value = (uint32_t*)&value64;
 532                 value_size = sizeof(uint64_t);
 533                 value64 = atomic64_read(&rdev->vram_usage);
 534                 break;
 535         case RADEON_INFO_GTT_USAGE:
 536                 value = (uint32_t*)&value64;
 537                 value_size = sizeof(uint64_t);
 538                 value64 = atomic64_read(&rdev->gtt_usage);
 539                 break;
 540         case RADEON_INFO_ACTIVE_CU_COUNT:
 541                 if (rdev->family >= CHIP_BONAIRE)
 542                         *value = rdev->config.cik.active_cus;
 543                 else if (rdev->family >= CHIP_TAHITI)
 544                         *value = rdev->config.si.active_cus;
 545                 else if (rdev->family >= CHIP_CAYMAN)
 546                         *value = rdev->config.cayman.active_simds;
 547                 else if (rdev->family >= CHIP_CEDAR)
 548                         *value = rdev->config.evergreen.active_simds;
 549                 else if (rdev->family >= CHIP_RV770)
 550                         *value = rdev->config.rv770.active_simds;
 551                 else if (rdev->family >= CHIP_R600)
 552                         *value = rdev->config.r600.active_simds;
 553                 else
 554                         *value = 1;
 555                 break;
 556         case RADEON_INFO_CURRENT_GPU_TEMP:
 557                 /* get temperature in millidegrees C */
 558                 if (rdev->asic->pm.get_temperature)
 559                         *value = radeon_get_temperature(rdev);
 560                 else
 561                         *value = 0;
 562                 break;
 563         case RADEON_INFO_CURRENT_GPU_SCLK:
 564                 /* get sclk in Mhz */
 565                 if (rdev->pm.dpm_enabled)
 566                         *value = radeon_dpm_get_current_sclk(rdev) / 100;
 567                 else
 568                         *value = rdev->pm.current_sclk / 100;
 569                 break;
 570         case RADEON_INFO_CURRENT_GPU_MCLK:
 571                 /* get mclk in Mhz */
 572                 if (rdev->pm.dpm_enabled)
 573                         *value = radeon_dpm_get_current_mclk(rdev) / 100;
 574                 else
 575                         *value = rdev->pm.current_mclk / 100;
 576                 break;
 577         case RADEON_INFO_READ_REG:
 578                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 579                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 580                         return -EFAULT;
 581                 }
 582                 if (radeon_get_allowed_info_register(rdev, *value, value))
 583                         return -EINVAL;
 584                 break;
 585         case RADEON_INFO_VA_UNMAP_WORKING:
 586                 *value = true;
 587                 break;
 588         case RADEON_INFO_GPU_RESET_COUNTER:
 589                 *value = atomic_read(&rdev->gpu_reset_counter);
 590                 break;
 591         default:
 592                 DRM_DEBUG_KMS("Invalid request %d\n", info->request);
 593                 return -EINVAL;
 594         }
 595         if (copy_to_user(value_ptr, (char*)value, value_size)) {
 596                 DRM_ERROR("copy_to_user %s:%u\n", __func__, __LINE__);
 597                 return -EFAULT;
 598         }
 599         return 0;
 600 }
 601
 602
 603 /*
 604  * Outdated mess for old drm with Xorg being in charge (void function now).
 605  */
 606 /**
 607  * radeon_driver_lastclose_kms - drm callback for last close
 608  *
 609  * @dev: drm dev pointer
 610  *
 611  * Switch vga_switcheroo state after last close (all asics).
 612  */
 613 void radeon_driver_lastclose_kms(struct drm_device *dev)
 614 {
 615         struct radeon_device *rdev = dev->dev_private;
 616
 617         radeon_fbdev_restore_mode(rdev);
 618         vga_switcheroo_process_delayed_switch();
 619 }
 620
 621 /**
 622  * radeon_driver_open_kms - drm callback for open
 623  *
 624  * @dev: drm dev pointer
 625  * @file_priv: drm file
 626  *
 627  * On device open, init vm on cayman+ (all asics).
 628  * Returns 0 on success, error on failure.
 629  */
 630 int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
 631 {
 632         struct radeon_device *rdev = dev->dev_private;
 633         int r;
 634
 635         file_priv->driver_priv = NULL;
 636
 637         r = pm_runtime_get_sync(dev->dev);
 638         if (r < 0) {
 639                 pm_runtime_put_autosuspend(dev->dev);
 640                 return r;
 641         }
 642
 643         /* new gpu have virtual address space support */
 644         if (rdev->family >= CHIP_CAYMAN) {
 645                 struct radeon_fpriv *fpriv;
 646                 struct radeon_vm *vm;
 647
 648                 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
 649                 if (unlikely(!fpriv)) {
 650                         r = -ENOMEM;
 651                         goto out_suspend;
 652                 }
 653
 654                 if (rdev->accel_working) {
 655                         vm = &fpriv->vm;
 656                         r = radeon_vm_init(rdev, vm);
 657                         if (r) {
 658                                 kfree(fpriv);
 659                                 goto out_suspend;
 660                         }
 661
 662                         r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 663                         if (r) {
 664                                 radeon_vm_fini(rdev, vm);
 665                                 kfree(fpriv);
 666                                 goto out_suspend;
 667                         }
 668
 669                         /* map the ib pool buffer read only into
 670                          * virtual address space */
 671                         vm->ib_bo_va = radeon_vm_bo_add(rdev, vm,
 672                                                         rdev->ring_tmp_bo.bo);
 673                         r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va,
 674                                                   RADEON_VA_IB_OFFSET,
 675                                                   RADEON_VM_PAGE_READABLE |
 676                                                   RADEON_VM_PAGE_SNOOPED);
 677                         if (r) {
 678                                 radeon_vm_fini(rdev, vm);
 679                                 kfree(fpriv);
 680                                 goto out_suspend;
 681                         }
 682                 }
 683                 file_priv->driver_priv = fpriv;
 684         }
 685
 686 out_suspend:
 687         pm_runtime_mark_last_busy(dev->dev);
 688         pm_runtime_put_autosuspend(dev->dev);
 689         return r;
 690 }
 691
 692 /**
 693  * radeon_driver_postclose_kms - drm callback for post close
 694  *
 695  * @dev: drm dev pointer
 696  * @file_priv: drm file
 697  *
 698  * On device post close, tear down vm on cayman+ (all asics).
 699  */
 700 void radeon_driver_postclose_kms(struct drm_device *dev,
 701                                  struct drm_file *file_priv)
 702 {
 703         struct radeon_device *rdev = dev->dev_private;
 704
 705         /* new gpu have virtual address space support */
 706         if (rdev->family >= CHIP_CAYMAN && file_priv->driver_priv) {
 707                 struct radeon_fpriv *fpriv = file_priv->driver_priv;
 708                 struct radeon_vm *vm = &fpriv->vm;
 709                 int r;
 710
 711                 if (rdev->accel_working) {
 712                         r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 713                         if (!r) {
 714                                 if (vm->ib_bo_va)
 715                                         radeon_vm_bo_rmv(rdev, vm->ib_bo_va);
 716                                 radeon_bo_unreserve(rdev->ring_tmp_bo.bo);
 717                         }
 718                         radeon_vm_fini(rdev, vm);
 719                 }
 720
 721                 kfree(fpriv);
 722                 file_priv->driver_priv = NULL;
 723         }
 724         pm_runtime_mark_last_busy(dev->dev);
 725         pm_runtime_put_autosuspend(dev->dev);
 726 }
 727
 728 /**
 729  * radeon_driver_preclose_kms - drm callback for pre close
 730  *
 731  * @dev: drm dev pointer
 732  * @file_priv: drm file
 733  *
 734  * On device pre close, tear down hyperz and cmask filps on r1xx-r5xx
 735  * (all asics).
 736  */
 737 void radeon_driver_preclose_kms(struct drm_device *dev,
 738                                 struct drm_file *file_priv)
 739 {
 740         struct radeon_device *rdev = dev->dev_private;
 741
 742         pm_runtime_get_sync(dev->dev);
 743
 744         mutex_lock(&rdev->gem.mutex);
 745         if (rdev->hyperz_filp == file_priv)
 746                 rdev->hyperz_filp = NULL;
 747         if (rdev->cmask_filp == file_priv)
 748                 rdev->cmask_filp = NULL;
 749         mutex_unlock(&rdev->gem.mutex);
 750
 751         radeon_uvd_free_handles(rdev, file_priv);
 752         radeon_vce_free_handles(rdev, file_priv);
 753 }
 754
 755 /*
 756  * VBlank related functions.
 757  */
 758 /**
 759  * radeon_get_vblank_counter_kms - get frame count
 760  *
 761  * @dev: drm dev pointer
 762  * @pipe: crtc to get the frame count from
 763  *
 764  * Gets the frame count on the requested crtc (all asics).
 765  * Returns frame count on success, -EINVAL on failure.
 766  */
 767 u32 radeon_get_vblank_counter_kms(struct drm_device *dev, unsigned int pipe)
 768 {
 769         int vpos, hpos, stat;
 770         u32 count;
 771         struct radeon_device *rdev = dev->dev_private;
 772
 773         if (pipe >= rdev->num_crtc) {
 774                 DRM_ERROR("Invalid crtc %u\n", pipe);
 775                 return -EINVAL;
 776         }
 777
 778         /* The hw increments its frame counter at start of vsync, not at start
 779          * of vblank, as is required by DRM core vblank counter handling.
 780          * Cook the hw count here to make it appear to the caller as if it
 781          * incremented at start of vblank. We measure distance to start of
 782          * vblank in vpos. vpos therefore will be >= 0 between start of vblank
 783          * and start of vsync, so vpos >= 0 means to bump the hw frame counter
 784          * result by 1 to give the proper appearance to caller.
 785          */
 786         if (rdev->mode_info.crtcs[pipe]) {
 787                 /* Repeat readout if needed to provide stable result if
 788                  * we cross start of vsync during the queries.
 789                  */
 790                 do {
 791                         count = radeon_get_vblank_counter(rdev, pipe);
 792                         /* Ask radeon_get_crtc_scanoutpos to return vpos as
 793                          * distance to start of vblank, instead of regular
 794                          * vertical scanout pos.
 795                          */
 796                         stat = radeon_get_crtc_scanoutpos(
 797                                 dev, pipe, GET_DISTANCE_TO_VBLANKSTART,
 798                                 &vpos, &hpos, NULL, NULL,
 799                                 &rdev->mode_info.crtcs[pipe]->base.hwmode);
 800                 } while (count != radeon_get_vblank_counter(rdev, pipe));
 801
 802                 if (((stat & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE)) !=
 803                     (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE))) {
 804                         DRM_DEBUG_VBL("Query failed! stat %d\n", stat);
 805                 }
 806                 else {
 807                         DRM_DEBUG_VBL("crtc %u: dist from vblank start %d\n",
 808                                       pipe, vpos);
 809
 810                         /* Bump counter if we are at >= leading edge of vblank,
 811                          * but before vsync where vpos would turn negative and
 812                          * the hw counter really increments.
 813                          */
 814                         if (vpos >= 0)
 815                                 count++;
 816                 }
 817         }
 818         else {
 819             /* Fallback to use value as is. */
 820             count = radeon_get_vblank_counter(rdev, pipe);
 821             DRM_DEBUG_VBL("NULL mode info! Returned count may be wrong.\n");
 822         }
 823
 824         return count;
 825 }
 826
 827 /**
 828  * radeon_enable_vblank_kms - enable vblank interrupt
 829  *
 830  * @dev: drm dev pointer
 831  * @crtc: crtc to enable vblank interrupt for
 832  *
 833  * Enable the interrupt on the requested crtc (all asics).
 834  * Returns 0 on success, -EINVAL on failure.
 835  */
 836 int radeon_enable_vblank_kms(struct drm_device *dev, int crtc)
 837 {
 838         struct radeon_device *rdev = dev->dev_private;
 839         unsigned long irqflags;
 840         int r;
 841
 842         if (crtc < 0 || crtc >= rdev->num_crtc) {
 843                 DRM_ERROR("Invalid crtc %d\n", crtc);
 844                 return -EINVAL;
 845         }
 846
 847         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 848         rdev->irq.crtc_vblank_int[crtc] = true;
 849         r = radeon_irq_set(rdev);
 850         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 851         return r;
 852 }
 853
 854 /**
 855  * radeon_disable_vblank_kms - disable vblank interrupt
 856  *
 857  * @dev: drm dev pointer
 858  * @crtc: crtc to disable vblank interrupt for
 859  *
 860  * Disable the interrupt on the requested crtc (all asics).
 861  */
 862 void radeon_disable_vblank_kms(struct drm_device *dev, int crtc)
 863 {
 864         struct radeon_device *rdev = dev->dev_private;
 865         unsigned long irqflags;
 866
 867         if (crtc < 0 || crtc >= rdev->num_crtc) {
 868                 DRM_ERROR("Invalid crtc %d\n", crtc);
 869                 return;
 870         }
 871
 872         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 873         rdev->irq.crtc_vblank_int[crtc] = false;
 874         radeon_irq_set(rdev);
 875         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 876 }
 877
 878 /**
 879  * radeon_get_vblank_timestamp_kms - get vblank timestamp
 880  *
 881  * @dev: drm dev pointer
 882  * @crtc: crtc to get the timestamp for
 883  * @max_error: max error
 884  * @vblank_time: time value
 885  * @flags: flags passed to the driver
 886  *
 887  * Gets the timestamp on the requested crtc based on the
 888  * scanout position.  (all asics).
 889  * Returns postive status flags on success, negative error on failure.
 890  */
 891 int radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
 892                                     int *max_error,
 893                                     struct timeval *vblank_time,
 894                                     unsigned flags)
 895 {
 896         struct drm_crtc *drmcrtc;
 897         struct radeon_device *rdev = dev->dev_private;
 898
 899         if (crtc < 0 || crtc >= dev->num_crtcs) {
 900                 DRM_ERROR("Invalid crtc %d\n", crtc);
 901                 return -EINVAL;
 902         }
 903
 904         /* Get associated drm_crtc: */
 905         drmcrtc = &rdev->mode_info.crtcs[crtc]->base;
 906         if (!drmcrtc)
 907                 return -EINVAL;
 908
 909         /* Helper routine in DRM core does all the work: */
 910         return drm_calc_vbltimestamp_from_scanoutpos(dev, crtc, max_error,
 911                                                      vblank_time, flags,
 912                                                      &drmcrtc->hwmode);
 913 }
 914
 915 const struct drm_ioctl_desc radeon_ioctls_kms[] = {
 916         DRM_IOCTL_DEF_DRV(RADEON_CP_INIT, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 917         DRM_IOCTL_DEF_DRV(RADEON_CP_START, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 918         DRM_IOCTL_DEF_DRV(RADEON_CP_STOP, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 919         DRM_IOCTL_DEF_DRV(RADEON_CP_RESET, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 920         DRM_IOCTL_DEF_DRV(RADEON_CP_IDLE, drm_invalid_op, DRM_AUTH),
 921         DRM_IOCTL_DEF_DRV(RADEON_CP_RESUME, drm_invalid_op, DRM_AUTH),
 922         DRM_IOCTL_DEF_DRV(RADEON_RESET, drm_invalid_op, DRM_AUTH),
 923         DRM_IOCTL_DEF_DRV(RADEON_FULLSCREEN, drm_invalid_op, DRM_AUTH),
 924         DRM_IOCTL_DEF_DRV(RADEON_SWAP, drm_invalid_op, DRM_AUTH),
 925         DRM_IOCTL_DEF_DRV(RADEON_CLEAR, drm_invalid_op, DRM_AUTH),
 926         DRM_IOCTL_DEF_DRV(RADEON_VERTEX, drm_invalid_op, DRM_AUTH),
 927         DRM_IOCTL_DEF_DRV(RADEON_INDICES, drm_invalid_op, DRM_AUTH),
 928         DRM_IOCTL_DEF_DRV(RADEON_TEXTURE, drm_invalid_op, DRM_AUTH),
 929         DRM_IOCTL_DEF_DRV(RADEON_STIPPLE, drm_invalid_op, DRM_AUTH),
 930         DRM_IOCTL_DEF_DRV(RADEON_INDIRECT, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 931         DRM_IOCTL_DEF_DRV(RADEON_VERTEX2, drm_invalid_op, DRM_AUTH),
 932         DRM_IOCTL_DEF_DRV(RADEON_CMDBUF, drm_invalid_op, DRM_AUTH),
 933         DRM_IOCTL_DEF_DRV(RADEON_GETPARAM, drm_invalid_op, DRM_AUTH),
 934         DRM_IOCTL_DEF_DRV(RADEON_FLIP, drm_invalid_op, DRM_AUTH),
 935         DRM_IOCTL_DEF_DRV(RADEON_ALLOC, drm_invalid_op, DRM_AUTH),
 936         DRM_IOCTL_DEF_DRV(RADEON_FREE, drm_invalid_op, DRM_AUTH),
 937         DRM_IOCTL_DEF_DRV(RADEON_INIT_HEAP, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 938         DRM_IOCTL_DEF_DRV(RADEON_IRQ_EMIT, drm_invalid_op, DRM_AUTH),
 939         DRM_IOCTL_DEF_DRV(RADEON_IRQ_WAIT, drm_invalid_op, DRM_AUTH),
 940         DRM_IOCTL_DEF_DRV(RADEON_SETPARAM, drm_invalid_op, DRM_AUTH),
 941         DRM_IOCTL_DEF_DRV(RADEON_SURF_ALLOC, drm_invalid_op, DRM_AUTH),
 942         DRM_IOCTL_DEF_DRV(RADEON_SURF_FREE, drm_invalid_op, DRM_AUTH),
 943         /* KMS */
 944         DRM_IOCTL_DEF_DRV(RADEON_GEM_INFO, radeon_gem_info_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 945         DRM_IOCTL_DEF_DRV(RADEON_GEM_CREATE, radeon_gem_create_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 946         DRM_IOCTL_DEF_DRV(RADEON_GEM_MMAP, radeon_gem_mmap_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 947         DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_DOMAIN, radeon_gem_set_domain_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 948         DRM_IOCTL_DEF_DRV(RADEON_GEM_PREAD, radeon_gem_pread_ioctl, DRM_AUTH),
 949         DRM_IOCTL_DEF_DRV(RADEON_GEM_PWRITE, radeon_gem_pwrite_ioctl, DRM_AUTH),
 950         DRM_IOCTL_DEF_DRV(RADEON_GEM_WAIT_IDLE, radeon_gem_wait_idle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 951         DRM_IOCTL_DEF_DRV(RADEON_CS, radeon_cs_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 952         DRM_IOCTL_DEF_DRV(RADEON_INFO, radeon_info_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 953         DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_TILING, radeon_gem_set_tiling_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 954         DRM_IOCTL_DEF_DRV(RADEON_GEM_GET_TILING, radeon_gem_get_tiling_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 955         DRM_IOCTL_DEF_DRV(RADEON_GEM_BUSY, radeon_gem_busy_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 956         DRM_IOCTL_DEF_DRV(RADEON_GEM_VA, radeon_gem_va_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 957         DRM_IOCTL_DEF_DRV(RADEON_GEM_OP, radeon_gem_op_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 958         DRM_IOCTL_DEF_DRV(RADEON_GEM_USERPTR, radeon_gem_userptr_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 959 };
 960 int radeon_max_kms_ioctl = ARRAY_SIZE(radeon_ioctls_kms);