drivers/gpu/drm/i915/i915_getparam.c

   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
  11 int 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 = &i915->gt.info.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->params.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         case I915_PARAM_HAS_EXEC_TIMELINE_FENCES:
 136                 /* For the time being all of these are always true;
 137                  * if some supported hardware does not have one of these
 138                  * features this value needs to be provided from
 139                  * INTEL_INFO(), a feature macro, or similar.
 140                  */
 141                 value = 1;
 142                 break;
 143         case I915_PARAM_HAS_CONTEXT_ISOLATION:
 144                 value = intel_engines_has_context_isolation(i915);
 145                 break;
 146         case I915_PARAM_SLICE_MASK:
 147                 value = sseu->slice_mask;
 148                 if (!value)
 149                         return -ENODEV;
 150                 break;
 151         case I915_PARAM_SUBSLICE_MASK:
 152                 value = sseu->subslice_mask[0];
 153                 if (!value)
 154                         return -ENODEV;
 155                 break;
 156         case I915_PARAM_CS_TIMESTAMP_FREQUENCY:
 157                 value = RUNTIME_INFO(i915)->cs_timestamp_frequency_hz;
 158                 break;
 159         case I915_PARAM_MMAP_GTT_COHERENT:
 160                 value = INTEL_INFO(i915)->has_coherent_ggtt;
 161                 break;
 162         case I915_PARAM_PERF_REVISION:
 163                 value = i915_perf_ioctl_version();
 164                 break;
 165         default:
 166                 DRM_DEBUG("Unknown parameter %d\n", param->param);
 167                 return -EINVAL;
 168         }
 169
 170         if (put_user(value, param->value))
 171                 return -EFAULT;
 172
 173         return 0;
 174 }