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         pm_runtime_get_sync(dev->dev);
  67
  68         radeon_kfd_device_fini(rdev);
  69
  70         radeon_acpi_fini(rdev);
  71
  72         radeon_modeset_fini(rdev);
  73         radeon_device_fini(rdev);
  74
  75 done_free:
  76         kfree(rdev);
  77         dev->dev_private = NULL;
  78         return 0;
  79 }
  80
  81 /**
  82  * radeon_driver_load_kms - Main load function for KMS.
  83  *
  84  * @dev: drm dev pointer
  85  * @flags: device flags
  86  *
  87  * This is the main load function for KMS (all asics).
  88  * It calls radeon_device_init() to set up the non-display
  89  * parts of the chip (asic init, CP, writeback, etc.), and
  90  * radeon_modeset_init() to set up the display parts
  91  * (crtcs, encoders, hotplug detect, etc.).
  92  * Returns 0 on success, error on failure.
  93  */
  94 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
  95 {
  96         struct radeon_device *rdev;
  97         int r, acpi_status;
  98
  99         rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
 100         if (rdev == NULL) {
 101                 return -ENOMEM;
 102         }
 103         dev->dev_private = (void *)rdev;
 104
 105         /* update BUS flag */
 106         if (drm_pci_device_is_agp(dev)) {
 107                 flags |= RADEON_IS_AGP;
 108         } else if (pci_is_pcie(dev->pdev)) {
 109                 flags |= RADEON_IS_PCIE;
 110         } else {
 111                 flags |= RADEON_IS_PCI;
 112         }
 113
 114         if ((radeon_runtime_pm != 0) &&
 115             radeon_has_atpx() &&
 116             ((flags & RADEON_IS_IGP) == 0))
 117                 flags |= RADEON_IS_PX;
 118
 119         /* radeon_device_init should report only fatal error
 120          * like memory allocation failure or iomapping failure,
 121          * or memory manager initialization failure, it must
 122          * properly initialize the GPU MC controller and permit
 123          * VRAM allocation
 124          */
 125         r = radeon_device_init(rdev, dev, dev->pdev, flags);
 126         if (r) {
 127                 dev_err(&dev->pdev->dev, "Fatal error during GPU init\n");
 128                 goto out;
 129         }
 130
 131         /* Again modeset_init should fail only on fatal error
 132          * otherwise it should provide enough functionalities
 133          * for shadowfb to run
 134          */
 135         r = radeon_modeset_init(rdev);
 136         if (r)
 137                 dev_err(&dev->pdev->dev, "Fatal error during modeset init\n");
 138
 139         /* Call ACPI methods: require modeset init
 140          * but failure is not fatal
 141          */
 142         if (!r) {
 143                 acpi_status = radeon_acpi_init(rdev);
 144                 if (acpi_status)
 145                 dev_dbg(&dev->pdev->dev,
 146                                 "Error during ACPI methods call\n");
 147         }
 148
 149         radeon_kfd_device_probe(rdev);
 150         radeon_kfd_device_init(rdev);
 151
 152         if (radeon_is_px(dev)) {
 153                 pm_runtime_use_autosuspend(dev->dev);
 154                 pm_runtime_set_autosuspend_delay(dev->dev, 5000);
 155                 pm_runtime_set_active(dev->dev);
 156                 pm_runtime_allow(dev->dev);
 157                 pm_runtime_mark_last_busy(dev->dev);
 158                 pm_runtime_put_autosuspend(dev->dev);
 159         }
 160
 161 out:
 162         if (r)
 163                 radeon_driver_unload_kms(dev);
 164
 165
 166         return r;
 167 }
 168
 169 /**
 170  * radeon_set_filp_rights - Set filp right.
 171  *
 172  * @dev: drm dev pointer
 173  * @owner: drm file
 174  * @applier: drm file
 175  * @value: value
 176  *
 177  * Sets the filp rights for the device (all asics).
 178  */
 179 static void radeon_set_filp_rights(struct drm_device *dev,
 180                                    struct drm_file **owner,
 181                                    struct drm_file *applier,
 182                                    uint32_t *value)
 183 {
 184         struct radeon_device *rdev = dev->dev_private;
 185
 186         mutex_lock(&rdev->gem.mutex);
 187         if (*value == 1) {
 188                 /* wants rights */
 189                 if (!*owner)
 190                         *owner = applier;
 191         } else if (*value == 0) {
 192                 /* revokes rights */
 193                 if (*owner == applier)
 194                         *owner = NULL;
 195         }
 196         *value = *owner == applier ? 1 : 0;
 197         mutex_unlock(&rdev->gem.mutex);
 198 }
 199
 200 /*
 201  * Userspace get information ioctl
 202  */
 203 /**
 204  * radeon_info_ioctl - answer a device specific request.
 205  *
 206  * @rdev: radeon device pointer
 207  * @data: request object
 208  * @filp: drm filp
 209  *
 210  * This function is used to pass device specific parameters to the userspace
 211  * drivers.  Examples include: pci device id, pipeline parms, tiling params,
 212  * etc. (all asics).
 213  * Returns 0 on success, -EINVAL on failure.
 214  */
 215 static int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 216 {
 217         struct radeon_device *rdev = dev->dev_private;
 218         struct drm_radeon_info *info = data;
 219         struct radeon_mode_info *minfo = &rdev->mode_info;
 220         uint32_t *value, value_tmp, *value_ptr, value_size;
 221         uint64_t value64;
 222         struct drm_crtc *crtc;
 223         int i, found;
 224
 225         value_ptr = (uint32_t *)((unsigned long)info->value);
 226         value = &value_tmp;
 227         value_size = sizeof(uint32_t);
 228
 229         switch (info->request) {
 230         case RADEON_INFO_DEVICE_ID:
 231                 *value = dev->pdev->device;
 232                 break;
 233         case RADEON_INFO_NUM_GB_PIPES:
 234                 *value = rdev->num_gb_pipes;
 235                 break;
 236         case RADEON_INFO_NUM_Z_PIPES:
 237                 *value = rdev->num_z_pipes;
 238                 break;
 239         case RADEON_INFO_ACCEL_WORKING:
 240                 /* xf86-video-ati 6.13.0 relies on this being false for evergreen */
 241                 if ((rdev->family >= CHIP_CEDAR) && (rdev->family <= CHIP_HEMLOCK))
 242                         *value = false;
 243                 else
 244                         *value = rdev->accel_working;
 245                 break;
 246         case RADEON_INFO_CRTC_FROM_ID:
 247                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 248                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 249                         return -EFAULT;
 250                 }
 251                 for (i = 0, found = 0; i < rdev->num_crtc; i++) {
 252                         crtc = (struct drm_crtc *)minfo->crtcs[i];
 253                         if (crtc && crtc->base.id == *value) {
 254                                 struct radeon_crtc *radeon_crtc = to_radeon_crtc(crtc);
 255                                 *value = radeon_crtc->crtc_id;
 256                                 found = 1;
 257                                 break;
 258                         }
 259                 }
 260                 if (!found) {
 261                         DRM_DEBUG_KMS("unknown crtc id %d\n", *value);
 262                         return -EINVAL;
 263                 }
 264                 break;
 265         case RADEON_INFO_ACCEL_WORKING2:
 266                 if (rdev->family == CHIP_HAWAII) {
 267                         if (rdev->accel_working) {
 268                                 if (rdev->new_fw)
 269                                         *value = 3;
 270                                 else
 271                                         *value = 2;
 272                         } else {
 273                                 *value = 0;
 274                         }
 275                 } else {
 276                         *value = rdev->accel_working;
 277                 }
 278                 break;
 279         case RADEON_INFO_TILING_CONFIG:
 280                 if (rdev->family >= CHIP_BONAIRE)
 281                         *value = rdev->config.cik.tile_config;
 282                 else if (rdev->family >= CHIP_TAHITI)
 283                         *value = rdev->config.si.tile_config;
 284                 else if (rdev->family >= CHIP_CAYMAN)
 285                         *value = rdev->config.cayman.tile_config;
 286                 else if (rdev->family >= CHIP_CEDAR)
 287                         *value = rdev->config.evergreen.tile_config;
 288                 else if (rdev->family >= CHIP_RV770)
 289                         *value = rdev->config.rv770.tile_config;
 290                 else if (rdev->family >= CHIP_R600)
 291                         *value = rdev->config.r600.tile_config;
 292                 else {
 293                         DRM_DEBUG_KMS("tiling config is r6xx+ only!\n");
 294                         return -EINVAL;
 295                 }
 296                 break;
 297         case RADEON_INFO_WANT_HYPERZ:
 298                 /* The "value" here is both an input and output parameter.
 299                  * If the input value is 1, filp requests hyper-z access.
 300                  * If the input value is 0, filp revokes its hyper-z access.
 301                  *
 302                  * When returning, the value is 1 if filp owns hyper-z access,
 303                  * 0 otherwise. */
 304                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 305                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 306                         return -EFAULT;
 307                 }
 308                 if (*value >= 2) {
 309                         DRM_DEBUG_KMS("WANT_HYPERZ: invalid value %d\n", *value);
 310                         return -EINVAL;
 311                 }
 312                 radeon_set_filp_rights(dev, &rdev->hyperz_filp, filp, value);
 313                 break;
 314         case RADEON_INFO_WANT_CMASK:
 315                 /* The same logic as Hyper-Z. */
 316                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 317                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 318                         return -EFAULT;
 319                 }
 320                 if (*value >= 2) {
 321                         DRM_DEBUG_KMS("WANT_CMASK: invalid value %d\n", *value);
 322                         return -EINVAL;
 323                 }
 324                 radeon_set_filp_rights(dev, &rdev->cmask_filp, filp, value);
 325                 break;
 326         case RADEON_INFO_CLOCK_CRYSTAL_FREQ:
 327                 /* return clock value in KHz */
 328                 if (rdev->asic->get_xclk)
 329                         *value = radeon_get_xclk(rdev) * 10;
 330                 else
 331                         *value = rdev->clock.spll.reference_freq * 10;
 332                 break;
 333         case RADEON_INFO_NUM_BACKENDS:
 334                 if (rdev->family >= CHIP_BONAIRE)
 335                         *value = rdev->config.cik.max_backends_per_se *
 336                                 rdev->config.cik.max_shader_engines;
 337                 else if (rdev->family >= CHIP_TAHITI)
 338                         *value = rdev->config.si.max_backends_per_se *
 339                                 rdev->config.si.max_shader_engines;
 340                 else if (rdev->family >= CHIP_CAYMAN)
 341                         *value = rdev->config.cayman.max_backends_per_se *
 342                                 rdev->config.cayman.max_shader_engines;
 343                 else if (rdev->family >= CHIP_CEDAR)
 344                         *value = rdev->config.evergreen.max_backends;
 345                 else if (rdev->family >= CHIP_RV770)
 346                         *value = rdev->config.rv770.max_backends;
 347                 else if (rdev->family >= CHIP_R600)
 348                         *value = rdev->config.r600.max_backends;
 349                 else {
 350                         return -EINVAL;
 351                 }
 352                 break;
 353         case RADEON_INFO_NUM_TILE_PIPES:
 354                 if (rdev->family >= CHIP_BONAIRE)
 355                         *value = rdev->config.cik.max_tile_pipes;
 356                 else if (rdev->family >= CHIP_TAHITI)
 357                         *value = rdev->config.si.max_tile_pipes;
 358                 else if (rdev->family >= CHIP_CAYMAN)
 359                         *value = rdev->config.cayman.max_tile_pipes;
 360                 else if (rdev->family >= CHIP_CEDAR)
 361                         *value = rdev->config.evergreen.max_tile_pipes;
 362                 else if (rdev->family >= CHIP_RV770)
 363                         *value = rdev->config.rv770.max_tile_pipes;
 364                 else if (rdev->family >= CHIP_R600)
 365                         *value = rdev->config.r600.max_tile_pipes;
 366                 else {
 367                         return -EINVAL;
 368                 }
 369                 break;
 370         case RADEON_INFO_FUSION_GART_WORKING:
 371                 *value = 1;
 372                 break;
 373         case RADEON_INFO_BACKEND_MAP:
 374                 if (rdev->family >= CHIP_BONAIRE)
 375                         *value = rdev->config.cik.backend_map;
 376                 else if (rdev->family >= CHIP_TAHITI)
 377                         *value = rdev->config.si.backend_map;
 378                 else if (rdev->family >= CHIP_CAYMAN)
 379                         *value = rdev->config.cayman.backend_map;
 380                 else if (rdev->family >= CHIP_CEDAR)
 381                         *value = rdev->config.evergreen.backend_map;
 382                 else if (rdev->family >= CHIP_RV770)
 383                         *value = rdev->config.rv770.backend_map;
 384                 else if (rdev->family >= CHIP_R600)
 385                         *value = rdev->config.r600.backend_map;
 386                 else {
 387                         return -EINVAL;
 388                 }
 389                 break;
 390         case RADEON_INFO_VA_START:
 391                 /* this is where we report if vm is supported or not */
 392                 if (rdev->family < CHIP_CAYMAN)
 393                         return -EINVAL;
 394                 *value = RADEON_VA_RESERVED_SIZE;
 395                 break;
 396         case RADEON_INFO_IB_VM_MAX_SIZE:
 397                 /* this is where we report if vm is supported or not */
 398                 if (rdev->family < CHIP_CAYMAN)
 399                         return -EINVAL;
 400                 *value = RADEON_IB_VM_MAX_SIZE;
 401                 break;
 402         case RADEON_INFO_MAX_PIPES:
 403                 if (rdev->family >= CHIP_BONAIRE)
 404                         *value = rdev->config.cik.max_cu_per_sh;
 405                 else if (rdev->family >= CHIP_TAHITI)
 406                         *value = rdev->config.si.max_cu_per_sh;
 407                 else if (rdev->family >= CHIP_CAYMAN)
 408                         *value = rdev->config.cayman.max_pipes_per_simd;
 409                 else if (rdev->family >= CHIP_CEDAR)
 410                         *value = rdev->config.evergreen.max_pipes;
 411                 else if (rdev->family >= CHIP_RV770)
 412                         *value = rdev->config.rv770.max_pipes;
 413                 else if (rdev->family >= CHIP_R600)
 414                         *value = rdev->config.r600.max_pipes;
 415                 else {
 416                         return -EINVAL;
 417                 }
 418                 break;
 419         case RADEON_INFO_TIMESTAMP:
 420                 if (rdev->family < CHIP_R600) {
 421                         DRM_DEBUG_KMS("timestamp is r6xx+ only!\n");
 422                         return -EINVAL;
 423                 }
 424                 value = (uint32_t*)&value64;
 425                 value_size = sizeof(uint64_t);
 426                 value64 = radeon_get_gpu_clock_counter(rdev);
 427                 break;
 428         case RADEON_INFO_MAX_SE:
 429                 if (rdev->family >= CHIP_BONAIRE)
 430                         *value = rdev->config.cik.max_shader_engines;
 431                 else if (rdev->family >= CHIP_TAHITI)
 432                         *value = rdev->config.si.max_shader_engines;
 433                 else if (rdev->family >= CHIP_CAYMAN)
 434                         *value = rdev->config.cayman.max_shader_engines;
 435                 else if (rdev->family >= CHIP_CEDAR)
 436                         *value = rdev->config.evergreen.num_ses;
 437                 else
 438                         *value = 1;
 439                 break;
 440         case RADEON_INFO_MAX_SH_PER_SE:
 441                 if (rdev->family >= CHIP_BONAIRE)
 442                         *value = rdev->config.cik.max_sh_per_se;
 443                 else if (rdev->family >= CHIP_TAHITI)
 444                         *value = rdev->config.si.max_sh_per_se;
 445                 else
 446                         return -EINVAL;
 447                 break;
 448         case RADEON_INFO_FASTFB_WORKING:
 449                 *value = rdev->fastfb_working;
 450                 break;
 451         case RADEON_INFO_RING_WORKING:
 452                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 453                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 454                         return -EFAULT;
 455                 }
 456                 switch (*value) {
 457                 case RADEON_CS_RING_GFX:
 458                 case RADEON_CS_RING_COMPUTE:
 459                         *value = rdev->ring[RADEON_RING_TYPE_GFX_INDEX].ready;
 460                         break;
 461                 case RADEON_CS_RING_DMA:
 462                         *value = rdev->ring[R600_RING_TYPE_DMA_INDEX].ready;
 463                         *value |= rdev->ring[CAYMAN_RING_TYPE_DMA1_INDEX].ready;
 464                         break;
 465                 case RADEON_CS_RING_UVD:
 466                         *value = rdev->ring[R600_RING_TYPE_UVD_INDEX].ready;
 467                         break;
 468                 case RADEON_CS_RING_VCE:
 469                         *value = rdev->ring[TN_RING_TYPE_VCE1_INDEX].ready;
 470                         break;
 471                 default:
 472                         return -EINVAL;
 473                 }
 474                 break;
 475         case RADEON_INFO_SI_TILE_MODE_ARRAY:
 476                 if (rdev->family >= CHIP_BONAIRE) {
 477                         value = rdev->config.cik.tile_mode_array;
 478                         value_size = sizeof(uint32_t)*32;
 479                 } else if (rdev->family >= CHIP_TAHITI) {
 480                         value = rdev->config.si.tile_mode_array;
 481                         value_size = sizeof(uint32_t)*32;
 482                 } else {
 483                         DRM_DEBUG_KMS("tile mode array is si+ only!\n");
 484                         return -EINVAL;
 485                 }
 486                 break;
 487         case RADEON_INFO_CIK_MACROTILE_MODE_ARRAY:
 488                 if (rdev->family >= CHIP_BONAIRE) {
 489                         value = rdev->config.cik.macrotile_mode_array;
 490                         value_size = sizeof(uint32_t)*16;
 491                 } else {
 492                         DRM_DEBUG_KMS("macrotile mode array is cik+ only!\n");
 493                         return -EINVAL;
 494                 }
 495                 break;
 496         case RADEON_INFO_SI_CP_DMA_COMPUTE:
 497                 *value = 1;
 498                 break;
 499         case RADEON_INFO_SI_BACKEND_ENABLED_MASK:
 500                 if (rdev->family >= CHIP_BONAIRE) {
 501                         *value = rdev->config.cik.backend_enable_mask;
 502                 } else if (rdev->family >= CHIP_TAHITI) {
 503                         *value = rdev->config.si.backend_enable_mask;
 504                 } else {
 505                         DRM_DEBUG_KMS("BACKEND_ENABLED_MASK is si+ only!\n");
 506                         return -EINVAL;
 507                 }
 508                 break;
 509         case RADEON_INFO_MAX_SCLK:
 510                 if ((rdev->pm.pm_method == PM_METHOD_DPM) &&
 511                     rdev->pm.dpm_enabled)
 512                         *value = rdev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk * 10;
 513                 else
 514                         *value = rdev->pm.default_sclk * 10;
 515                 break;
 516         case RADEON_INFO_VCE_FW_VERSION:
 517                 *value = rdev->vce.fw_version;
 518                 break;
 519         case RADEON_INFO_VCE_FB_VERSION:
 520                 *value = rdev->vce.fb_version;
 521                 break;
 522         case RADEON_INFO_NUM_BYTES_MOVED:
 523                 value = (uint32_t*)&value64;
 524                 value_size = sizeof(uint64_t);
 525                 value64 = atomic64_read(&rdev->num_bytes_moved);
 526                 break;
 527         case RADEON_INFO_VRAM_USAGE:
 528                 value = (uint32_t*)&value64;
 529                 value_size = sizeof(uint64_t);
 530                 value64 = atomic64_read(&rdev->vram_usage);
 531                 break;
 532         case RADEON_INFO_GTT_USAGE:
 533                 value = (uint32_t*)&value64;
 534                 value_size = sizeof(uint64_t);
 535                 value64 = atomic64_read(&rdev->gtt_usage);
 536                 break;
 537         case RADEON_INFO_ACTIVE_CU_COUNT:
 538                 if (rdev->family >= CHIP_BONAIRE)
 539                         *value = rdev->config.cik.active_cus;
 540                 else if (rdev->family >= CHIP_TAHITI)
 541                         *value = rdev->config.si.active_cus;
 542                 else if (rdev->family >= CHIP_CAYMAN)
 543                         *value = rdev->config.cayman.active_simds;
 544                 else if (rdev->family >= CHIP_CEDAR)
 545                         *value = rdev->config.evergreen.active_simds;
 546                 else if (rdev->family >= CHIP_RV770)
 547                         *value = rdev->config.rv770.active_simds;
 548                 else if (rdev->family >= CHIP_R600)
 549                         *value = rdev->config.r600.active_simds;
 550                 else
 551                         *value = 1;
 552                 break;
 553         case RADEON_INFO_CURRENT_GPU_TEMP:
 554                 /* get temperature in millidegrees C */
 555                 if (rdev->asic->pm.get_temperature)
 556                         *value = radeon_get_temperature(rdev);
 557                 else
 558                         *value = 0;
 559                 break;
 560         case RADEON_INFO_CURRENT_GPU_SCLK:
 561                 /* get sclk in Mhz */
 562                 if (rdev->pm.dpm_enabled)
 563                         *value = radeon_dpm_get_current_sclk(rdev) / 100;
 564                 else
 565                         *value = rdev->pm.current_sclk / 100;
 566                 break;
 567         case RADEON_INFO_CURRENT_GPU_MCLK:
 568                 /* get mclk in Mhz */
 569                 if (rdev->pm.dpm_enabled)
 570                         *value = radeon_dpm_get_current_mclk(rdev) / 100;
 571                 else
 572                         *value = rdev->pm.current_mclk / 100;
 573                 break;
 574         case RADEON_INFO_READ_REG:
 575                 if (copy_from_user(value, value_ptr, sizeof(uint32_t))) {
 576                         DRM_ERROR("copy_from_user %s:%u\n", __func__, __LINE__);
 577                         return -EFAULT;
 578                 }
 579                 if (radeon_get_allowed_info_register(rdev, *value, value))
 580                         return -EINVAL;
 581                 break;
 582         case RADEON_INFO_VA_UNMAP_WORKING:
 583                 *value = true;
 584                 break;
 585         case RADEON_INFO_GPU_RESET_COUNTER:
 586                 *value = atomic_read(&rdev->gpu_reset_counter);
 587                 break;
 588         default:
 589                 DRM_DEBUG_KMS("Invalid request %d\n", info->request);
 590                 return -EINVAL;
 591         }
 592         if (copy_to_user(value_ptr, (char*)value, value_size)) {
 593                 DRM_ERROR("copy_to_user %s:%u\n", __func__, __LINE__);
 594                 return -EFAULT;
 595         }
 596         return 0;
 597 }
 598
 599
 600 /*
 601  * Outdated mess for old drm with Xorg being in charge (void function now).
 602  */
 603 /**
 604  * radeon_driver_lastclose_kms - drm callback for last close
 605  *
 606  * @dev: drm dev pointer
 607  *
 608  * Switch vga_switcheroo state after last close (all asics).
 609  */
 610 void radeon_driver_lastclose_kms(struct drm_device *dev)
 611 {
 612         struct radeon_device *rdev = dev->dev_private;
 613
 614         radeon_fbdev_restore_mode(rdev);
 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                 pm_runtime_put_autosuspend(dev->dev);
 637                 return r;
 638         }
 639
 640         /* new gpu have virtual address space support */
 641         if (rdev->family >= CHIP_CAYMAN) {
 642                 struct radeon_fpriv *fpriv;
 643                 struct radeon_vm *vm;
 644                 int r;
 645
 646                 fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
 647                 if (unlikely(!fpriv)) {
 648                         return -ENOMEM;
 649                 }
 650
 651                 if (rdev->accel_working) {
 652                         vm = &fpriv->vm;
 653                         r = radeon_vm_init(rdev, vm);
 654                         if (r) {
 655                                 kfree(fpriv);
 656                                 return r;
 657                         }
 658
 659                         r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 660                         if (r) {
 661                                 radeon_vm_fini(rdev, vm);
 662                                 kfree(fpriv);
 663                                 return r;
 664                         }
 665
 666                         /* map the ib pool buffer read only into
 667                          * virtual address space */
 668                         vm->ib_bo_va = radeon_vm_bo_add(rdev, vm,
 669                                                         rdev->ring_tmp_bo.bo);
 670                         r = radeon_vm_bo_set_addr(rdev, vm->ib_bo_va,
 671                                                   RADEON_VA_IB_OFFSET,
 672                                                   RADEON_VM_PAGE_READABLE |
 673                                                   RADEON_VM_PAGE_SNOOPED);
 674                         if (r) {
 675                                 radeon_vm_fini(rdev, vm);
 676                                 kfree(fpriv);
 677                                 return r;
 678                         }
 679                 }
 680                 file_priv->driver_priv = fpriv;
 681         }
 682
 683         pm_runtime_mark_last_busy(dev->dev);
 684         pm_runtime_put_autosuspend(dev->dev);
 685         return 0;
 686 }
 687
 688 /**
 689  * radeon_driver_postclose_kms - drm callback for post close
 690  *
 691  * @dev: drm dev pointer
 692  * @file_priv: drm file
 693  *
 694  * On device post close, 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         /* new gpu have virtual address space support */
 702         if (rdev->family >= CHIP_CAYMAN && file_priv->driver_priv) {
 703                 struct radeon_fpriv *fpriv = file_priv->driver_priv;
 704                 struct radeon_vm *vm = &fpriv->vm;
 705                 int r;
 706
 707                 if (rdev->accel_working) {
 708                         r = radeon_bo_reserve(rdev->ring_tmp_bo.bo, false);
 709                         if (!r) {
 710                                 if (vm->ib_bo_va)
 711                                         radeon_vm_bo_rmv(rdev, vm->ib_bo_va);
 712                                 radeon_bo_unreserve(rdev->ring_tmp_bo.bo);
 713                         }
 714                         radeon_vm_fini(rdev, vm);
 715                 }
 716
 717                 kfree(fpriv);
 718                 file_priv->driver_priv = NULL;
 719         }
 720 }
 721
 722 /**
 723  * radeon_driver_preclose_kms - drm callback for pre close
 724  *
 725  * @dev: drm dev pointer
 726  * @file_priv: drm file
 727  *
 728  * On device pre close, tear down hyperz and cmask filps on r1xx-r5xx
 729  * (all asics).
 730  */
 731 void radeon_driver_preclose_kms(struct drm_device *dev,
 732                                 struct drm_file *file_priv)
 733 {
 734         struct radeon_device *rdev = dev->dev_private;
 735
 736         mutex_lock(&rdev->gem.mutex);
 737         if (rdev->hyperz_filp == file_priv)
 738                 rdev->hyperz_filp = NULL;
 739         if (rdev->cmask_filp == file_priv)
 740                 rdev->cmask_filp = NULL;
 741         mutex_unlock(&rdev->gem.mutex);
 742
 743         radeon_uvd_free_handles(rdev, file_priv);
 744         radeon_vce_free_handles(rdev, file_priv);
 745 }
 746
 747 /*
 748  * VBlank related functions.
 749  */
 750 /**
 751  * radeon_get_vblank_counter_kms - get frame count
 752  *
 753  * @dev: drm dev pointer
 754  * @crtc: crtc to get the frame count from
 755  *
 756  * Gets the frame count on the requested crtc (all asics).
 757  * Returns frame count on success, -EINVAL on failure.
 758  */
 759 u32 radeon_get_vblank_counter_kms(struct drm_device *dev, int crtc)
 760 {
 761         int vpos, hpos, stat;
 762         u32 count;
 763         struct radeon_device *rdev = dev->dev_private;
 764
 765         if (crtc < 0 || crtc >= rdev->num_crtc) {
 766                 DRM_ERROR("Invalid crtc %d\n", crtc);
 767                 return -EINVAL;
 768         }
 769
 770         /* The hw increments its frame counter at start of vsync, not at start
 771          * of vblank, as is required by DRM core vblank counter handling.
 772          * Cook the hw count here to make it appear to the caller as if it
 773          * incremented at start of vblank. We measure distance to start of
 774          * vblank in vpos. vpos therefore will be >= 0 between start of vblank
 775          * and start of vsync, so vpos >= 0 means to bump the hw frame counter
 776          * result by 1 to give the proper appearance to caller.
 777          */
 778         if (rdev->mode_info.crtcs[crtc]) {
 779                 /* Repeat readout if needed to provide stable result if
 780                  * we cross start of vsync during the queries.
 781                  */
 782                 do {
 783                         count = radeon_get_vblank_counter(rdev, crtc);
 784                         /* Ask radeon_get_crtc_scanoutpos to return vpos as
 785                          * distance to start of vblank, instead of regular
 786                          * vertical scanout pos.
 787                          */
 788                         stat = radeon_get_crtc_scanoutpos(
 789                                 dev, crtc, GET_DISTANCE_TO_VBLANKSTART,
 790                                 &vpos, &hpos, NULL, NULL,
 791                                 &rdev->mode_info.crtcs[crtc]->base.hwmode);
 792                 } while (count != radeon_get_vblank_counter(rdev, crtc));
 793
 794                 if (((stat & (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE)) !=
 795                     (DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE))) {
 796                         DRM_DEBUG_VBL("Query failed! stat %d\n", stat);
 797                 }
 798                 else {
 799                         DRM_DEBUG_VBL("crtc %d: dist from vblank start %d\n",
 800                                       crtc, vpos);
 801
 802                         /* Bump counter if we are at >= leading edge of vblank,
 803                          * but before vsync where vpos would turn negative and
 804                          * the hw counter really increments.
 805                          */
 806                         if (vpos >= 0)
 807                                 count++;
 808                 }
 809         }
 810         else {
 811             /* Fallback to use value as is. */
 812             count = radeon_get_vblank_counter(rdev, crtc);
 813             DRM_DEBUG_VBL("NULL mode info! Returned count may be wrong.\n");
 814         }
 815
 816         return count;
 817 }
 818
 819 /**
 820  * radeon_enable_vblank_kms - enable vblank interrupt
 821  *
 822  * @dev: drm dev pointer
 823  * @crtc: crtc to enable vblank interrupt for
 824  *
 825  * Enable the interrupt on the requested crtc (all asics).
 826  * Returns 0 on success, -EINVAL on failure.
 827  */
 828 int radeon_enable_vblank_kms(struct drm_device *dev, int crtc)
 829 {
 830         struct radeon_device *rdev = dev->dev_private;
 831         unsigned long irqflags;
 832         int r;
 833
 834         if (crtc < 0 || crtc >= rdev->num_crtc) {
 835                 DRM_ERROR("Invalid crtc %d\n", crtc);
 836                 return -EINVAL;
 837         }
 838
 839         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 840         rdev->irq.crtc_vblank_int[crtc] = true;
 841         r = radeon_irq_set(rdev);
 842         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 843         return r;
 844 }
 845
 846 /**
 847  * radeon_disable_vblank_kms - disable vblank interrupt
 848  *
 849  * @dev: drm dev pointer
 850  * @crtc: crtc to disable vblank interrupt for
 851  *
 852  * Disable the interrupt on the requested crtc (all asics).
 853  */
 854 void radeon_disable_vblank_kms(struct drm_device *dev, int crtc)
 855 {
 856         struct radeon_device *rdev = dev->dev_private;
 857         unsigned long irqflags;
 858
 859         if (crtc < 0 || crtc >= rdev->num_crtc) {
 860                 DRM_ERROR("Invalid crtc %d\n", crtc);
 861                 return;
 862         }
 863
 864         spin_lock_irqsave(&rdev->irq.lock, irqflags);
 865         rdev->irq.crtc_vblank_int[crtc] = false;
 866         radeon_irq_set(rdev);
 867         spin_unlock_irqrestore(&rdev->irq.lock, irqflags);
 868 }
 869
 870 /**
 871  * radeon_get_vblank_timestamp_kms - get vblank timestamp
 872  *
 873  * @dev: drm dev pointer
 874  * @crtc: crtc to get the timestamp for
 875  * @max_error: max error
 876  * @vblank_time: time value
 877  * @flags: flags passed to the driver
 878  *
 879  * Gets the timestamp on the requested crtc based on the
 880  * scanout position.  (all asics).
 881  * Returns postive status flags on success, negative error on failure.
 882  */
 883 int radeon_get_vblank_timestamp_kms(struct drm_device *dev, int crtc,
 884                                     int *max_error,
 885                                     struct timeval *vblank_time,
 886                                     unsigned flags)
 887 {
 888         struct drm_crtc *drmcrtc;
 889         struct radeon_device *rdev = dev->dev_private;
 890
 891         if (crtc < 0 || crtc >= dev->num_crtcs) {
 892                 DRM_ERROR("Invalid crtc %d\n", crtc);
 893                 return -EINVAL;
 894         }
 895
 896         /* Get associated drm_crtc: */
 897         drmcrtc = &rdev->mode_info.crtcs[crtc]->base;
 898         if (!drmcrtc)
 899                 return -EINVAL;
 900
 901         /* Helper routine in DRM core does all the work: */
 902         return drm_calc_vbltimestamp_from_scanoutpos(dev, crtc, max_error,
 903                                                      vblank_time, flags,
 904                                                      &drmcrtc->hwmode);
 905 }
 906
 907 const struct drm_ioctl_desc radeon_ioctls_kms[] = {
 908         DRM_IOCTL_DEF_DRV(RADEON_CP_INIT, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 909         DRM_IOCTL_DEF_DRV(RADEON_CP_START, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 910         DRM_IOCTL_DEF_DRV(RADEON_CP_STOP, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 911         DRM_IOCTL_DEF_DRV(RADEON_CP_RESET, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 912         DRM_IOCTL_DEF_DRV(RADEON_CP_IDLE, drm_invalid_op, DRM_AUTH),
 913         DRM_IOCTL_DEF_DRV(RADEON_CP_RESUME, drm_invalid_op, DRM_AUTH),
 914         DRM_IOCTL_DEF_DRV(RADEON_RESET, drm_invalid_op, DRM_AUTH),
 915         DRM_IOCTL_DEF_DRV(RADEON_FULLSCREEN, drm_invalid_op, DRM_AUTH),
 916         DRM_IOCTL_DEF_DRV(RADEON_SWAP, drm_invalid_op, DRM_AUTH),
 917         DRM_IOCTL_DEF_DRV(RADEON_CLEAR, drm_invalid_op, DRM_AUTH),
 918         DRM_IOCTL_DEF_DRV(RADEON_VERTEX, drm_invalid_op, DRM_AUTH),
 919         DRM_IOCTL_DEF_DRV(RADEON_INDICES, drm_invalid_op, DRM_AUTH),
 920         DRM_IOCTL_DEF_DRV(RADEON_TEXTURE, drm_invalid_op, DRM_AUTH),
 921         DRM_IOCTL_DEF_DRV(RADEON_STIPPLE, drm_invalid_op, DRM_AUTH),
 922         DRM_IOCTL_DEF_DRV(RADEON_INDIRECT, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 923         DRM_IOCTL_DEF_DRV(RADEON_VERTEX2, drm_invalid_op, DRM_AUTH),
 924         DRM_IOCTL_DEF_DRV(RADEON_CMDBUF, drm_invalid_op, DRM_AUTH),
 925         DRM_IOCTL_DEF_DRV(RADEON_GETPARAM, drm_invalid_op, DRM_AUTH),
 926         DRM_IOCTL_DEF_DRV(RADEON_FLIP, drm_invalid_op, DRM_AUTH),
 927         DRM_IOCTL_DEF_DRV(RADEON_ALLOC, drm_invalid_op, DRM_AUTH),
 928         DRM_IOCTL_DEF_DRV(RADEON_FREE, drm_invalid_op, DRM_AUTH),
 929         DRM_IOCTL_DEF_DRV(RADEON_INIT_HEAP, drm_invalid_op, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 930         DRM_IOCTL_DEF_DRV(RADEON_IRQ_EMIT, drm_invalid_op, DRM_AUTH),
 931         DRM_IOCTL_DEF_DRV(RADEON_IRQ_WAIT, drm_invalid_op, DRM_AUTH),
 932         DRM_IOCTL_DEF_DRV(RADEON_SETPARAM, drm_invalid_op, DRM_AUTH),
 933         DRM_IOCTL_DEF_DRV(RADEON_SURF_ALLOC, drm_invalid_op, DRM_AUTH),
 934         DRM_IOCTL_DEF_DRV(RADEON_SURF_FREE, drm_invalid_op, DRM_AUTH),
 935         /* KMS */
 936         DRM_IOCTL_DEF_DRV(RADEON_GEM_INFO, radeon_gem_info_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 937         DRM_IOCTL_DEF_DRV(RADEON_GEM_CREATE, radeon_gem_create_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 938         DRM_IOCTL_DEF_DRV(RADEON_GEM_MMAP, radeon_gem_mmap_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 939         DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_DOMAIN, radeon_gem_set_domain_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 940         DRM_IOCTL_DEF_DRV(RADEON_GEM_PREAD, radeon_gem_pread_ioctl, DRM_AUTH),
 941         DRM_IOCTL_DEF_DRV(RADEON_GEM_PWRITE, radeon_gem_pwrite_ioctl, DRM_AUTH),
 942         DRM_IOCTL_DEF_DRV(RADEON_GEM_WAIT_IDLE, radeon_gem_wait_idle_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 943         DRM_IOCTL_DEF_DRV(RADEON_CS, radeon_cs_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 944         DRM_IOCTL_DEF_DRV(RADEON_INFO, radeon_info_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 945         DRM_IOCTL_DEF_DRV(RADEON_GEM_SET_TILING, radeon_gem_set_tiling_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 946         DRM_IOCTL_DEF_DRV(RADEON_GEM_GET_TILING, radeon_gem_get_tiling_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 947         DRM_IOCTL_DEF_DRV(RADEON_GEM_BUSY, radeon_gem_busy_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 948         DRM_IOCTL_DEF_DRV(RADEON_GEM_VA, radeon_gem_va_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 949         DRM_IOCTL_DEF_DRV(RADEON_GEM_OP, radeon_gem_op_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 950         DRM_IOCTL_DEF_DRV(RADEON_GEM_USERPTR, radeon_gem_userptr_ioctl, DRM_AUTH|DRM_RENDER_ALLOW),
 951 };
 952 int radeon_max_kms_ioctl = ARRAY_SIZE(radeon_ioctls_kms);