src/gallium/drivers/vc4/vc4_cl.h

   1 /*
   2  * Copyright © 2014 Broadcom
   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
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #ifndef VC4_CL_H
  25 #define VC4_CL_H
  26
  27 #include <stdint.h>
  28
  29 #include "util/u_math.h"
  30
  31 #include "vc4_packet.h"
  32
  33 struct vc4_bo;
  34
  35 struct vc4_cl {
  36         void *base;
  37         void *next;
  38         void *end;
  39         uint32_t reloc_next;
  40         uint32_t reloc_count;
  41 };
  42
  43 void vc4_init_cl(struct vc4_context *vc4, struct vc4_cl *cl);
  44 void vc4_grow_cl(struct vc4_cl *cl);
  45 void vc4_reset_cl(struct vc4_cl *cl);
  46 uint32_t vc4_gem_hindex(struct vc4_context *vc4, struct vc4_bo *bo);
  47
  48 static inline void
  49 cl_u8(struct vc4_cl *cl, uint8_t n)
  50 {
  51         if (cl->next + 1 > cl->end)
  52                 vc4_grow_cl(cl);
  53
  54         *(uint8_t *)cl->next = n;
  55         cl->next++;
  56 }
  57
  58 static inline void
  59 cl_u16(struct vc4_cl *cl, uint32_t n)
  60 {
  61         if (cl->next + 2 > cl->end)
  62                 vc4_grow_cl(cl);
  63
  64         *(uint16_t *)cl->next = n;
  65         cl->next += 2;
  66 }
  67
  68 static inline void
  69 cl_u32(struct vc4_cl *cl, uint32_t n)
  70 {
  71         if (cl->next + 4 > cl->end)
  72                 vc4_grow_cl(cl);
  73
  74         *(uint32_t *)cl->next = n;
  75         cl->next += 4;
  76 }
  77
  78 static inline void
  79 cl_ptr(struct vc4_cl *cl, void *ptr)
  80 {
  81         if (cl->next + sizeof(void *) > cl->end)
  82                 vc4_grow_cl(cl);
  83
  84         *(void **)cl->next = ptr;
  85         cl->next += sizeof(void *);
  86 }
  87
  88 static inline void
  89 cl_f(struct vc4_cl *cl, float f)
  90 {
  91         cl_u32(cl, fui(f));
  92 }
  93
  94 static inline void
  95 cl_start_reloc(struct vc4_cl *cl, uint32_t n)
  96 {
  97         assert(n == 1 || n == 2);
  98         assert(cl->reloc_count == 0);
  99         cl->reloc_count = n;
 100
 101         cl_u8(cl, VC4_PACKET_GEM_HANDLES);
 102         cl->reloc_next = cl->next - cl->base;
 103         cl_u32(cl, 0); /* Space where hindex will be written. */
 104         cl_u32(cl, 0); /* Space where hindex will be written. */
 105 }
 106
 107 static inline void
 108 cl_start_shader_reloc(struct vc4_cl *cl, uint32_t n)
 109 {
 110         assert(cl->reloc_count == 0);
 111         cl->reloc_count = n;
 112         cl->reloc_next = cl->next - cl->base;
 113
 114         for (int i = 0; i < n; i++)
 115                 cl_u32(cl, 0); /* Space where hindex will be written. */
 116 }
 117
 118 static inline void
 119 cl_reloc(struct vc4_context *vc4, struct vc4_cl *cl,
 120          struct vc4_bo *bo, uint32_t offset)
 121 {
 122         *(uint32_t *)(cl->base + cl->reloc_next) = vc4_gem_hindex(vc4, bo);
 123         cl->reloc_next += 4;
 124
 125         cl->reloc_count--;
 126
 127         cl_u32(cl, offset);
 128 }
 129
 130 #endif /* VC4_CL_H */