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 IS_BIFROST (1 << 3)
49
50 /* What it says on the tin */
51 #define HAS_SWIZZLES (1 << 4)
52
53 /* bit 5 unused */
54
55 /* Whether this GPU lacks support for any typed stores in blend shader,
56 * requiring packing instead */
57 #define MIDGARD_NO_TYPED_BLEND_STORES (1 << 6)
58
59 /* Whether this GPU lacks support for any typed loads, requiring packing */
60 #define MIDGARD_NO_TYPED_BLEND_LOADS (1 << 7)
61
62 /* Lack support for colour pack/unpack opcodes */
63 #define NO_BLEND_PACKS (1 << 8)
64
65 /* Has some missing formats for typed loads */
66 #define MIDGARD_MISSING_LOADS (1 << 9)
67
68 /* Lack support for AFBC */
69 #define MIDGARD_NO_AFBC (1 << 10)
70
71 /* Quirk collections common to particular uarchs */
72
73 #define MIDGARD_QUIRKS (MIDGARD_BROKEN_FP16 | HAS_SWIZZLES \
74 | MIDGARD_NO_TYPED_BLEND_STORES \
75 | MIDGARD_MISSING_LOADS)
76
77 /* TODO: AFBC on Bifrost */
78 #define BIFROST_QUIRKS (IS_BIFROST | NO_BLEND_PACKS | MIDGARD_NO_AFBC)
79
80 static inline unsigned
panfrost_get_quirks(unsigned gpu_id)81 panfrost_get_quirks(unsigned gpu_id)
82 {
83 switch (gpu_id) {
84 case 0x600:
85 case 0x620:
86 return MIDGARD_QUIRKS | MIDGARD_SFBD
87 | MIDGARD_NO_TYPED_BLEND_LOADS
88 | NO_BLEND_PACKS | MIDGARD_NO_AFBC;
89
90 case 0x720:
91 return MIDGARD_QUIRKS | MIDGARD_SFBD | MIDGARD_NO_HIER_TILING
92 | MIDGARD_NO_AFBC;
93
94 case 0x820:
95 case 0x830:
96 return MIDGARD_QUIRKS | MIDGARD_NO_HIER_TILING;
97
98 case 0x750:
99 /* Someone should investigate the broken loads? */
100 return MIDGARD_QUIRKS | MIDGARD_NO_TYPED_BLEND_LOADS
101 | NO_BLEND_PACKS;
102
103 case 0x860:
104 case 0x880:
105 return MIDGARD_QUIRKS;
106
107 case 0x6000: /* G71 */
108 case 0x6221: /* G72 */
109 return BIFROST_QUIRKS | HAS_SWIZZLES;
110
111 case 0x7093: /* G31 */
112 case 0x7212: /* G52 */
113 return BIFROST_QUIRKS;
114
115 default:
116 unreachable("Unknown Panfrost GPU ID");
117 }
118 }
119
120 #endif
121