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 #include "util/macros.h"
  31
  32 #include "kernel/vc4_packet.h"
  33
  34 struct vc4_bo;
  35
  36 /**
  37  * Undefined structure, used for typechecking that you're passing the pointers
  38  * to these functions correctly.
  39  */
  40 struct vc4_cl_out;
  41
  42 struct vc4_cl {
  43         void *base;
  44         struct vc4_cl_out *next;
  45         struct vc4_cl_out *reloc_next;
  46         uint32_t size;
  47 #ifdef DEBUG
  48         uint32_t reloc_count;
  49 #endif
  50 };
  51
  52 void vc4_init_cl(struct vc4_context *vc4, struct vc4_cl *cl);
  53 void vc4_reset_cl(struct vc4_cl *cl);
  54 void vc4_dump_cl(void *cl, uint32_t size, bool is_render);
  55 uint32_t vc4_gem_hindex(struct vc4_context *vc4, struct vc4_bo *bo);
  56
  57 struct PACKED unaligned_16 { uint16_t x; };
  58 struct PACKED unaligned_32 { uint32_t x; };
  59
  60 static inline uint32_t cl_offset(struct vc4_cl *cl)
  61 {
  62         return (char *)cl->next - (char *)cl->base;
  63 }
  64
  65 static inline void
  66 cl_advance(struct vc4_cl_out **cl, uint32_t n)
  67 {
  68         (*cl) = (struct vc4_cl_out *)((char *)(*cl) + n);
  69 }
  70
  71 static inline struct vc4_cl_out *
  72 cl_start(struct vc4_cl *cl)
  73 {
  74         return cl->next;
  75 }
  76
  77 static inline void
  78 cl_end(struct vc4_cl *cl, struct vc4_cl_out *next)
  79 {
  80         cl->next = next;
  81         assert(cl_offset(cl) <= cl->size);
  82 }
  83
  84
  85 static inline void
  86 put_unaligned_32(struct vc4_cl_out *ptr, uint32_t val)
  87 {
  88         struct unaligned_32 *p = (void *)ptr;
  89         p->x = val;
  90 }
  91
  92 static inline void
  93 put_unaligned_16(struct vc4_cl_out *ptr, uint16_t val)
  94 {
  95         struct unaligned_16 *p = (void *)ptr;
  96         p->x = val;
  97 }
  98
  99 static inline void
 100 cl_u8(struct vc4_cl_out **cl, uint8_t n)
 101 {
 102         *(uint8_t *)(*cl) = n;
 103         cl_advance(cl, 1);
 104 }
 105
 106 static inline void
 107 cl_u16(struct vc4_cl_out **cl, uint16_t n)
 108 {
 109         put_unaligned_16(*cl, n);
 110         cl_advance(cl, 2);
 111 }
 112
 113 static inline void
 114 cl_u32(struct vc4_cl_out **cl, uint32_t n)
 115 {
 116         put_unaligned_32(*cl, n);
 117         cl_advance(cl, 4);
 118 }
 119
 120 static inline void
 121 cl_aligned_u32(struct vc4_cl_out **cl, uint32_t n)
 122 {
 123         *(uint32_t *)(*cl) = n;
 124         cl_advance(cl, 4);
 125 }
 126
 127 static inline void
 128 cl_ptr(struct vc4_cl_out **cl, void *ptr)
 129 {
 130         *(struct vc4_cl_out **)(*cl) = ptr;
 131         cl_advance(cl, sizeof(void *));
 132 }
 133
 134 static inline void
 135 cl_f(struct vc4_cl_out **cl, float f)
 136 {
 137         cl_u32(cl, fui(f));
 138 }
 139
 140 static inline void
 141 cl_aligned_f(struct vc4_cl_out **cl, float f)
 142 {
 143         cl_aligned_u32(cl, fui(f));
 144 }
 145
 146 static inline void
 147 cl_start_reloc(struct vc4_cl *cl, struct vc4_cl_out **out, uint32_t n)
 148 {
 149         assert(n == 1 || n == 2);
 150 #ifdef DEBUG
 151         assert(cl->reloc_count == 0);
 152         cl->reloc_count = n;
 153 #endif
 154
 155         cl_u8(out, VC4_PACKET_GEM_HANDLES);
 156         cl->reloc_next = *out;
 157         cl_u32(out, 0); /* Space where hindex will be written. */
 158         cl_u32(out, 0); /* Space where hindex will be written. */
 159 }
 160
 161 static inline struct vc4_cl_out *
 162 cl_start_shader_reloc(struct vc4_cl *cl, uint32_t n)
 163 {
 164 #ifdef DEBUG
 165         assert(cl->reloc_count == 0);
 166         cl->reloc_count = n;
 167 #endif
 168         cl->reloc_next = cl->next;
 169
 170         /* Reserve the space where hindex will be written. */
 171         cl_advance(&cl->next, n * 4);
 172
 173         return cl->next;
 174 }
 175
 176 static inline void
 177 cl_reloc(struct vc4_context *vc4, struct vc4_cl *cl, struct vc4_cl_out **cl_out,
 178          struct vc4_bo *bo, uint32_t offset)
 179 {
 180         *(uint32_t *)cl->reloc_next = vc4_gem_hindex(vc4, bo);
 181         cl_advance(&cl->reloc_next, 4);
 182
 183 #ifdef DEBUG
 184         cl->reloc_count--;
 185 #endif
 186
 187         cl_u32(cl_out, offset);
 188 }
 189
 190 static inline void
 191 cl_aligned_reloc(struct vc4_context *vc4, struct vc4_cl *cl,
 192                  struct vc4_cl_out **cl_out,
 193                  struct vc4_bo *bo, uint32_t offset)
 194 {
 195         *(uint32_t *)cl->reloc_next = vc4_gem_hindex(vc4, bo);
 196         cl_advance(&cl->reloc_next, 4);
 197
 198 #ifdef DEBUG
 199         cl->reloc_count--;
 200 #endif
 201
 202         cl_aligned_u32(cl_out, offset);
 203 }
 204
 205 void cl_ensure_space(struct vc4_cl *cl, uint32_t size);
 206
 207 #endif /* VC4_CL_H */