src/intel/isl/isl_drm.c

   1 /*
   2  * Copyright 2017 Intel Corporation
   3  *
   4  *  Permission is hereby granted, free of charge, to any person obtaining a
   5  *  copy of this software and associated documentation files (the "Software"),
   6  *  to deal in the Software without restriction, including without limitation
   7  *  the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  *  and/or sell copies of the Software, and to permit persons to whom the
   9  *  Software is furnished to do so, subject to the following conditions:
  10  *
  11  *  The above copyright notice and this permission notice (including the next
  12  *  paragraph) shall be included in all copies or substantial portions of the
  13  *  Software.
  14  *
  15  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  *  THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  *  IN THE SOFTWARE.
  22  */
  23
  24 #include <assert.h>
  25 #include <stdlib.h>
  26
  27 #include "drm-uapi/drm_fourcc.h"
  28 #include "drm-uapi/i915_drm.h"
  29
  30 #include "isl.h"
  31 #include "dev/gen_device_info.h"
  32
  33 uint32_t
  34 isl_tiling_to_i915_tiling(enum isl_tiling tiling)
  35 {
  36    switch (tiling) {
  37    case ISL_TILING_LINEAR:
  38       return I915_TILING_NONE;
  39
  40    case ISL_TILING_X:
  41       return I915_TILING_X;
  42
  43    case ISL_TILING_Y0:
  44    case ISL_TILING_HIZ:
  45    case ISL_TILING_CCS:
  46       return I915_TILING_Y;
  47
  48    case ISL_TILING_W:
  49    case ISL_TILING_Yf:
  50    case ISL_TILING_Ys:
  51    case ISL_TILING_GEN12_CCS:
  52       return I915_TILING_NONE;
  53    }
  54
  55    unreachable("Invalid ISL tiling");
  56 }
  57
  58 enum isl_tiling
  59 isl_tiling_from_i915_tiling(uint32_t tiling)
  60 {
  61    switch (tiling) {
  62    case I915_TILING_NONE:
  63       return ISL_TILING_LINEAR;
  64
  65    case I915_TILING_X:
  66       return ISL_TILING_X;
  67
  68    case I915_TILING_Y:
  69       return ISL_TILING_Y0;
  70    }
  71
  72    unreachable("Invalid i915 tiling");
  73 }
  74
  75 static const struct isl_drm_modifier_info modifier_info[] = {
  76    {
  77       .modifier = DRM_FORMAT_MOD_NONE,
  78       .name = "DRM_FORMAT_MOD_NONE",
  79       .tiling = ISL_TILING_LINEAR,
  80    },
  81    {
  82       .modifier = I915_FORMAT_MOD_X_TILED,
  83       .name = "I915_FORMAT_MOD_X_TILED",
  84       .tiling = ISL_TILING_X,
  85    },
  86    {
  87       .modifier = I915_FORMAT_MOD_Y_TILED,
  88       .name = "I915_FORMAT_MOD_Y_TILED",
  89       .tiling = ISL_TILING_Y0,
  90    },
  91    {
  92       .modifier = I915_FORMAT_MOD_Y_TILED_CCS,
  93       .name = "I915_FORMAT_MOD_Y_TILED_CCS",
  94       .tiling = ISL_TILING_Y0,
  95       .aux_usage = ISL_AUX_USAGE_CCS_E,
  96       .supports_clear_color = false,
  97    },
  98 };
  99
 100 const struct isl_drm_modifier_info *
 101 isl_drm_modifier_get_info(uint64_t modifier)
 102 {
 103    for (unsigned i = 0; i < ARRAY_SIZE(modifier_info); i++) {
 104       if (modifier_info[i].modifier == modifier)
 105          return &modifier_info[i];
 106    }
 107
 108    return NULL;
 109 }