src/freedreno/computerator/main.h

   1 /*
   2  * Copyright © 2020 Google, Inc.
   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 __MAIN_H__
  25 #define __MAIN_H__
  26
  27 #include <err.h>
  28 #include <stdint.h>
  29 #include <stdio.h>
  30
  31 #include "drm/freedreno_drmif.h"
  32 #include "drm/freedreno_ringbuffer.h"
  33
  34 #include "registers/adreno_pm4.xml.h"
  35 #include "registers/adreno_common.xml.h"
  36
  37 #define MAX_BUFS 4
  38
  39 struct kernel {
  40         /* filled in by backend when shader is assembled: */
  41         uint32_t local_size[3];
  42         uint32_t num_bufs;
  43         uint32_t buf_sizes[MAX_BUFS]; /* size in dwords */
  44
  45         /* filled in by frontend before launching grid: */
  46         struct fd_bo *bufs[MAX_BUFS];
  47 };
  48
  49 /* per-generation entry-points: */
  50 struct backend {
  51         struct kernel *(*assemble)(struct backend *b, FILE *in);
  52         void (*disassemble)(struct kernel *kernel, FILE *out);
  53         void (*emit_grid)(struct kernel *kernel, uint32_t grid[3],
  54                         struct fd_submit *submit);
  55 };
  56
  57 #define define_cast(_from, _to) \
  58 static inline struct _to *              \
  59 to_ ## _to(struct _from *f)             \
  60 { return (struct _to *)f; }
  61
  62 struct backend *a6xx_init(struct fd_device *dev, uint32_t gpu_id);
  63
  64 /*
  65  * cmdstream helpers:
  66  */
  67
  68 static inline void
  69 BEGIN_RING(struct fd_ringbuffer *ring, uint32_t ndwords)
  70 {
  71         if (ring->cur + ndwords > ring->end)
  72                 fd_ringbuffer_grow(ring, ndwords);
  73 }
  74
  75 static inline void
  76 OUT_RING(struct fd_ringbuffer *ring, uint32_t data)
  77 {
  78         fd_ringbuffer_emit(ring, data);
  79 }
  80
  81 static inline unsigned
  82 _odd_parity_bit(unsigned val)
  83 {
  84         /* See: http://graphics.stanford.edu/~seander/bithacks.html#ParityParallel
  85          * note that we want odd parity so 0x6996 is inverted.
  86          */
  87         val ^= val >> 16;
  88         val ^= val >> 8;
  89         val ^= val >> 4;
  90         val &= 0xf;
  91         return (~0x6996 >> val) & 1;
  92 }
  93
  94 static inline void
  95 OUT_PKT4(struct fd_ringbuffer *ring, uint16_t regindx, uint16_t cnt)
  96 {
  97         BEGIN_RING(ring, cnt+1);
  98         OUT_RING(ring, CP_TYPE4_PKT | cnt |
  99                         (_odd_parity_bit(cnt) << 7) |
 100                         ((regindx & 0x3ffff) << 8) |
 101                         ((_odd_parity_bit(regindx) << 27)));
 102 }
 103
 104 static inline void
 105 OUT_PKT7(struct fd_ringbuffer *ring, uint8_t opcode, uint16_t cnt)
 106 {
 107         BEGIN_RING(ring, cnt+1);
 108         OUT_RING(ring, CP_TYPE7_PKT | cnt |
 109                         (_odd_parity_bit(cnt) << 15) |
 110                         ((opcode & 0x7f) << 16) |
 111                         ((_odd_parity_bit(opcode) << 23)));
 112 }
 113
 114 /*
 115  * NOTE: OUT_RELOC*() is 2 dwords (64b) on a5xx+
 116  */
 117
 118 static inline void
 119 __out_reloc(struct fd_ringbuffer *ring, struct fd_bo *bo,
 120                 uint32_t offset, uint64_t or, int32_t shift, uint32_t flags)
 121 {
 122         debug_assert(offset < fd_bo_size(bo));
 123         fd_ringbuffer_reloc(ring, &(struct fd_reloc){
 124                 .bo = bo,
 125                 .flags = flags,
 126                 .offset = offset,
 127                 .or = or,
 128                 .shift = shift,
 129                 .orhi = or >> 32,
 130         });
 131 }
 132
 133 static inline void
 134 OUT_RELOC(struct fd_ringbuffer *ring, struct fd_bo *bo,
 135                 uint32_t offset, uint64_t or, int32_t shift)
 136 {
 137         __out_reloc(ring, bo, offset, or, shift, FD_RELOC_READ);
 138 }
 139
 140 static inline void
 141 OUT_RELOCW(struct fd_ringbuffer *ring, struct fd_bo *bo,
 142                 uint32_t offset, uint64_t or, int32_t shift)
 143 {
 144         __out_reloc(ring, bo, offset, or, shift, FD_RELOC_READ | FD_RELOC_WRITE);
 145 }
 146
 147 static inline void
 148 OUT_RELOCD(struct fd_ringbuffer *ring, struct fd_bo *bo,
 149                 uint32_t offset, uint64_t or, int32_t shift)
 150 {
 151         __out_reloc(ring, bo, offset, or, shift, FD_RELOC_READ | FD_RELOC_DUMP);
 152 }
 153
 154 static inline void
 155 OUT_RB(struct fd_ringbuffer *ring, struct fd_ringbuffer *target)
 156 {
 157         fd_ringbuffer_emit_reloc_ring_full(ring, target, 0);
 158 }
 159
 160 /* for conditionally setting boolean flag(s): */
 161 #define COND(bool, val) ((bool) ? (val) : 0)
 162
 163 #endif /* __MAIN_H__ */