src/panfrost/include/panfrost-quirks.h

   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
  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                 return BIFROST_QUIRKS | HAS_SWIZZLES;
 109
 110         case 0x7093: /* G31 */
 111         case 0x7212: /* G52 */
 112                 return BIFROST_QUIRKS;
 113
 114         default:
 115                 unreachable("Unknown Panfrost GPU ID");
 116         }
 117 }
 118
 119 #endif