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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
isl_tiling_to_i915_tiling(enum isl_tiling tiling)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
isl_tiling_from_i915_tiling(uint32_t 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       .modifier = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS,
100       .name = "I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS",
101       .tiling = ISL_TILING_Y0,
102       .aux_usage = ISL_AUX_USAGE_GEN12_CCS_E,
103       .supports_clear_color = false,
104    },
105    {
106       .modifier = I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS,
107       .name = "I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS",
108       .tiling = ISL_TILING_Y0,
109       .aux_usage = ISL_AUX_USAGE_MC,
110       .supports_clear_color = false,
111    },
112 };
113 
114 const struct isl_drm_modifier_info *
isl_drm_modifier_get_info(uint64_t modifier)115 isl_drm_modifier_get_info(uint64_t modifier)
116 {
117    for (unsigned i = 0; i < ARRAY_SIZE(modifier_info); i++) {
118       if (modifier_info[i].modifier == modifier)
119          return &modifier_info[i];
120    }
121 
122    return NULL;
123 }
124