linux/drivers/gpu/drm/i915/i915_getparam.c
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   1/*
   2 * SPDX-License-Identifier: MIT
   3 */
   4
   5#include "gem/i915_gem_mman.h"
   6#include "gt/intel_engine_user.h"
   7
   8#include "i915_drv.h"
   9#include "i915_perf.h"
  10
  11int i915_getparam_ioctl(struct drm_device *dev, void *data,
  12                        struct drm_file *file_priv)
  13{
  14        struct drm_i915_private *i915 = to_i915(dev);
  15        const struct sseu_dev_info *sseu = &RUNTIME_INFO(i915)->sseu;
  16        drm_i915_getparam_t *param = data;
  17        int value;
  18
  19        switch (param->param) {
  20        case I915_PARAM_IRQ_ACTIVE:
  21        case I915_PARAM_ALLOW_BATCHBUFFER:
  22        case I915_PARAM_LAST_DISPATCH:
  23        case I915_PARAM_HAS_EXEC_CONSTANTS:
  24                /* Reject all old ums/dri params. */
  25                return -ENODEV;
  26        case I915_PARAM_CHIPSET_ID:
  27                value = i915->drm.pdev->device;
  28                break;
  29        case I915_PARAM_REVISION:
  30                value = i915->drm.pdev->revision;
  31                break;
  32        case I915_PARAM_NUM_FENCES_AVAIL:
  33                value = i915->ggtt.num_fences;
  34                break;
  35        case I915_PARAM_HAS_OVERLAY:
  36                value = !!i915->overlay;
  37                break;
  38        case I915_PARAM_HAS_BSD:
  39                value = !!intel_engine_lookup_user(i915,
  40                                                   I915_ENGINE_CLASS_VIDEO, 0);
  41                break;
  42        case I915_PARAM_HAS_BLT:
  43                value = !!intel_engine_lookup_user(i915,
  44                                                   I915_ENGINE_CLASS_COPY, 0);
  45                break;
  46        case I915_PARAM_HAS_VEBOX:
  47                value = !!intel_engine_lookup_user(i915,
  48                                                   I915_ENGINE_CLASS_VIDEO_ENHANCE, 0);
  49                break;
  50        case I915_PARAM_HAS_BSD2:
  51                value = !!intel_engine_lookup_user(i915,
  52                                                   I915_ENGINE_CLASS_VIDEO, 1);
  53                break;
  54        case I915_PARAM_HAS_LLC:
  55                value = HAS_LLC(i915);
  56                break;
  57        case I915_PARAM_HAS_WT:
  58                value = HAS_WT(i915);
  59                break;
  60        case I915_PARAM_HAS_ALIASING_PPGTT:
  61                value = INTEL_PPGTT(i915);
  62                break;
  63        case I915_PARAM_HAS_SEMAPHORES:
  64                value = !!(i915->caps.scheduler & I915_SCHEDULER_CAP_SEMAPHORES);
  65                break;
  66        case I915_PARAM_HAS_SECURE_BATCHES:
  67                value = HAS_SECURE_BATCHES(i915) && capable(CAP_SYS_ADMIN);
  68                break;
  69        case I915_PARAM_CMD_PARSER_VERSION:
  70                value = i915_cmd_parser_get_version(i915);
  71                break;
  72        case I915_PARAM_SUBSLICE_TOTAL:
  73                value = intel_sseu_subslice_total(sseu);
  74                if (!value)
  75                        return -ENODEV;
  76                break;
  77        case I915_PARAM_EU_TOTAL:
  78                value = sseu->eu_total;
  79                if (!value)
  80                        return -ENODEV;
  81                break;
  82        case I915_PARAM_HAS_GPU_RESET:
  83                value = i915_modparams.enable_hangcheck &&
  84                        intel_has_gpu_reset(&i915->gt);
  85                if (value && intel_has_reset_engine(&i915->gt))
  86                        value = 2;
  87                break;
  88        case I915_PARAM_HAS_RESOURCE_STREAMER:
  89                value = 0;
  90                break;
  91        case I915_PARAM_HAS_POOLED_EU:
  92                value = HAS_POOLED_EU(i915);
  93                break;
  94        case I915_PARAM_MIN_EU_IN_POOL:
  95                value = sseu->min_eu_in_pool;
  96                break;
  97        case I915_PARAM_HUC_STATUS:
  98                value = intel_huc_check_status(&i915->gt.uc.huc);
  99                if (value < 0)
 100                        return value;
 101                break;
 102        case I915_PARAM_MMAP_GTT_VERSION:
 103                /* Though we've started our numbering from 1, and so class all
 104                 * earlier versions as 0, in effect their value is undefined as
 105                 * the ioctl will report EINVAL for the unknown param!
 106                 */
 107                value = i915_gem_mmap_gtt_version();
 108                break;
 109        case I915_PARAM_HAS_SCHEDULER:
 110                value = i915->caps.scheduler;
 111                break;
 112
 113        case I915_PARAM_MMAP_VERSION:
 114                /* Remember to bump this if the version changes! */
 115        case I915_PARAM_HAS_GEM:
 116        case I915_PARAM_HAS_PAGEFLIPPING:
 117        case I915_PARAM_HAS_EXECBUF2: /* depends on GEM */
 118        case I915_PARAM_HAS_RELAXED_FENCING:
 119        case I915_PARAM_HAS_COHERENT_RINGS:
 120        case I915_PARAM_HAS_RELAXED_DELTA:
 121        case I915_PARAM_HAS_GEN7_SOL_RESET:
 122        case I915_PARAM_HAS_WAIT_TIMEOUT:
 123        case I915_PARAM_HAS_PRIME_VMAP_FLUSH:
 124        case I915_PARAM_HAS_PINNED_BATCHES:
 125        case I915_PARAM_HAS_EXEC_NO_RELOC:
 126        case I915_PARAM_HAS_EXEC_HANDLE_LUT:
 127        case I915_PARAM_HAS_COHERENT_PHYS_GTT:
 128        case I915_PARAM_HAS_EXEC_SOFTPIN:
 129        case I915_PARAM_HAS_EXEC_ASYNC:
 130        case I915_PARAM_HAS_EXEC_FENCE:
 131        case I915_PARAM_HAS_EXEC_CAPTURE:
 132        case I915_PARAM_HAS_EXEC_BATCH_FIRST:
 133        case I915_PARAM_HAS_EXEC_FENCE_ARRAY:
 134        case I915_PARAM_HAS_EXEC_SUBMIT_FENCE:
 135                /* For the time being all of these are always true;
 136                 * if some supported hardware does not have one of these
 137                 * features this value needs to be provided from
 138                 * INTEL_INFO(), a feature macro, or similar.
 139                 */
 140                value = 1;
 141                break;
 142        case I915_PARAM_HAS_CONTEXT_ISOLATION:
 143                value = intel_engines_has_context_isolation(i915);
 144                break;
 145        case I915_PARAM_SLICE_MASK:
 146                value = sseu->slice_mask;
 147                if (!value)
 148                        return -ENODEV;
 149                break;
 150        case I915_PARAM_SUBSLICE_MASK:
 151                value = sseu->subslice_mask[0];
 152                if (!value)
 153                        return -ENODEV;
 154                break;
 155        case I915_PARAM_CS_TIMESTAMP_FREQUENCY:
 156                value = RUNTIME_INFO(i915)->cs_timestamp_frequency_hz;
 157                break;
 158        case I915_PARAM_MMAP_GTT_COHERENT:
 159                value = INTEL_INFO(i915)->has_coherent_ggtt;
 160                break;
 161        case I915_PARAM_PERF_REVISION:
 162                value = i915_perf_ioctl_version();
 163                break;
 164        default:
 165                DRM_DEBUG("Unknown parameter %d\n", param->param);
 166                return -EINVAL;
 167        }
 168
 169        if (put_user(value, param->value))
 170                return -EFAULT;
 171
 172        return 0;
 173}
 174