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      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
     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