1 /*
2 * Copyright (C) 2019 Collabora, Ltd.
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 FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 */
23
24 #ifndef __PANFROST_QUIRKS_H
25 #define __PANFROST_QUIRKS_H
26
27 /* Model-specific quirks requiring workarounds/etc. Quirks may be errata
28 * requiring a workaround, or features. We're trying to be quirk-positive
29 * here; quirky is the best! */
30
31 /* Whether the GPU lacks the capability for hierarchical tiling, without an
32 * "Advanced Tiling Unit", instead requiring a single bin size for the entire
33 * framebuffer be selected by the driver */
34
35 #define MIDGARD_NO_HIER_TILING (1 << 0)
36
37 /* Whether this GPU lacks native multiple render target support and accordingly
38 * needs SFBDs instead, with complex lowering with ES3 */
39
40 #define MIDGARD_SFBD (1 << 1)
41
42 /* Whether fp16 is broken in the compiler. Hopefully this quirk will go away
43 * over time */
44
45 #define MIDGARD_BROKEN_FP16 (1 << 2)
46
47 /* What it says on the tin */
48 #define HAS_SWIZZLES (1 << 4)
49
50 /* bit 5 unused */
51
52 /* Whether this GPU lacks support for any typed stores in blend shader,
53 * requiring packing instead */
54 #define MIDGARD_NO_TYPED_BLEND_STORES (1 << 6)
55
56 /* Whether this GPU lacks support for any typed loads, requiring packing */
57 #define MIDGARD_NO_TYPED_BLEND_LOADS (1 << 7)
58
59 /* Lack support for colour pack/unpack opcodes */
60 #define NO_BLEND_PACKS (1 << 8)
61
62 /* Has some missing formats for typed loads */
63 #define MIDGARD_MISSING_LOADS (1 << 9)
64
65 /* Lack support for AFBC */
66 #define MIDGARD_NO_AFBC (1 << 10)
67
68 /* Does this GPU support anisotropic filtering? */
69 #define HAS_ANISOTROPIC (1 << 11)
70
71 #define NO_TILE_ENABLE_MAP (1 << 12)
72
73 /* Quirk collections common to particular uarchs */
74
75 #define MIDGARD_QUIRKS (MIDGARD_BROKEN_FP16 | HAS_SWIZZLES \
76 | MIDGARD_NO_TYPED_BLEND_STORES \
77 | MIDGARD_MISSING_LOADS)
78
79 #define BIFROST_QUIRKS NO_BLEND_PACKS
80
81 static inline unsigned
panfrost_get_quirks(unsigned gpu_id,unsigned gpu_revision)82 panfrost_get_quirks(unsigned gpu_id, unsigned gpu_revision)
83 {
84 switch (gpu_id) {
85 case 0x600:
86 case 0x620:
87 return MIDGARD_QUIRKS | MIDGARD_SFBD
88 | MIDGARD_NO_TYPED_BLEND_LOADS
89 | NO_BLEND_PACKS | MIDGARD_NO_AFBC
90 | NO_TILE_ENABLE_MAP;
91
92 case 0x720:
93 return MIDGARD_QUIRKS | MIDGARD_SFBD | MIDGARD_NO_HIER_TILING
94 | MIDGARD_NO_AFBC | NO_TILE_ENABLE_MAP;
95
96 case 0x820:
97 case 0x830:
98 return MIDGARD_QUIRKS | MIDGARD_NO_HIER_TILING;
99
100 case 0x750:
101 return MIDGARD_QUIRKS;
102
103 case 0x860:
104 case 0x880:
105 return MIDGARD_QUIRKS;
106
107 case 0x6000: /* G71 */
108 return BIFROST_QUIRKS | HAS_SWIZZLES;
109
110 case 0x6221: /* G72 */
111 /* Anisotropic filtering is supported from r0p3 onwards */
112 return BIFROST_QUIRKS | HAS_SWIZZLES
113 | (gpu_revision >= 0x30 ? HAS_ANISOTROPIC : 0);
114
115 case 0x7093: /* G31 */
116 case 0x7212: /* G52 */
117 case 0x7402: /* G52r1 */
118 return BIFROST_QUIRKS | HAS_ANISOTROPIC;
119
120 default:
121 unreachable("Unknown Panfrost GPU ID");
122 }
123 }
124
125 #endif
126