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 struct vc4_job;
  36
  37 /**
  38  * Undefined structure, used for typechecking that you're passing the pointers
  39  * to these functions correctly.
  40  */
  41 struct vc4_cl_out;
  42
  43 struct vc4_cl {
  44         void *base;
  45         struct vc4_cl_out *next;
  46         struct vc4_cl_out *reloc_next;
  47         uint32_t size;
  48 #ifdef DEBUG
  49         uint32_t reloc_count;
  50 #endif
  51 };
  52
  53 void vc4_init_cl(void *mem_ctx, struct vc4_cl *cl);
  54 void vc4_reset_cl(struct vc4_cl *cl);
  55 void vc4_dump_cl(void *cl, uint32_t size, bool is_render);
  56 uint32_t vc4_gem_hindex(struct vc4_job *job, struct vc4_bo *bo);
  57
  58 struct PACKED unaligned_16 { uint16_t x; };
  59 struct PACKED unaligned_32 { uint32_t x; };
  60
  61 static inline uint32_t cl_offset(struct vc4_cl *cl)
  62 {
  63         return (char *)cl->next - (char *)cl->base;
  64 }
  65
  66 static inline void
  67 cl_advance(struct vc4_cl_out **cl, uint32_t n)
  68 {
  69         (*cl) = (struct vc4_cl_out *)((char *)(*cl) + n);
  70 }
  71
  72 static inline struct vc4_cl_out *
  73 cl_start(struct vc4_cl *cl)
  74 {
  75         return cl->next;
  76 }
  77
  78 static inline void
  79 cl_end(struct vc4_cl *cl, struct vc4_cl_out *next)
  80 {
  81         cl->next = next;
  82         assert(cl_offset(cl) <= cl->size);
  83 }
  84
  85
  86 static inline void
  87 put_unaligned_32(struct vc4_cl_out *ptr, uint32_t val)
  88 {
  89         struct unaligned_32 *p = (void *)ptr;
  90         p->x = val;
  91 }
  92
  93 static inline void
  94 put_unaligned_16(struct vc4_cl_out *ptr, uint16_t val)
  95 {
  96         struct unaligned_16 *p = (void *)ptr;
  97         p->x = val;
  98 }
  99
 100 static inline void
 101 cl_u8(struct vc4_cl_out **cl, uint8_t n)
 102 {
 103         *(uint8_t *)(*cl) = n;
 104         cl_advance(cl, 1);
 105 }
 106
 107 static inline void
 108 cl_u16(struct vc4_cl_out **cl, uint16_t n)
 109 {
 110         put_unaligned_16(*cl, n);
 111         cl_advance(cl, 2);
 112 }
 113
 114 static inline void
 115 cl_u32(struct vc4_cl_out **cl, uint32_t n)
 116 {
 117         put_unaligned_32(*cl, n);
 118         cl_advance(cl, 4);
 119 }
 120
 121 static inline void
 122 cl_aligned_u32(struct vc4_cl_out **cl, uint32_t n)
 123 {
 124         *(uint32_t *)(*cl) = n;
 125         cl_advance(cl, 4);
 126 }
 127
 128 static inline void
 129 cl_ptr(struct vc4_cl_out **cl, void *ptr)
 130 {
 131         *(struct vc4_cl_out **)(*cl) = ptr;
 132         cl_advance(cl, sizeof(void *));
 133 }
 134
 135 static inline void
 136 cl_f(struct vc4_cl_out **cl, float f)
 137 {
 138         cl_u32(cl, fui(f));
 139 }
 140
 141 static inline void
 142 cl_aligned_f(struct vc4_cl_out **cl, float f)
 143 {
 144         cl_aligned_u32(cl, fui(f));
 145 }
 146
 147 static inline void
 148 cl_start_reloc(struct vc4_cl *cl, struct vc4_cl_out **out, uint32_t n)
 149 {
 150         assert(n == 1 || n == 2);
 151 #ifdef DEBUG
 152         assert(cl->reloc_count == 0);
 153         cl->reloc_count = n;
 154 #endif
 155
 156         cl_u8(out, VC4_PACKET_GEM_HANDLES);
 157         cl->reloc_next = *out;
 158         cl_u32(out, 0); /* Space where hindex will be written. */
 159         cl_u32(out, 0); /* Space where hindex will be written. */
 160 }
 161
 162 static inline struct vc4_cl_out *
 163 cl_start_shader_reloc(struct vc4_cl *cl, uint32_t n)
 164 {
 165 #ifdef DEBUG
 166         assert(cl->reloc_count == 0);
 167         cl->reloc_count = n;
 168 #endif
 169         cl->reloc_next = cl->next;
 170
 171         /* Reserve the space where hindex will be written. */
 172         cl_advance(&cl->next, n * 4);
 173
 174         return cl->next;
 175 }
 176
 177 static inline void
 178 cl_reloc(struct vc4_job *job, struct vc4_cl *cl, struct vc4_cl_out **cl_out,
 179          struct vc4_bo *bo, uint32_t offset)
 180 {
 181         *(uint32_t *)cl->reloc_next = vc4_gem_hindex(job, bo);
 182         cl_advance(&cl->reloc_next, 4);
 183
 184 #ifdef DEBUG
 185         cl->reloc_count--;
 186 #endif
 187
 188         cl_u32(cl_out, offset);
 189 }
 190
 191 static inline void
 192 cl_aligned_reloc(struct vc4_job *job, struct vc4_cl *cl,
 193                  struct vc4_cl_out **cl_out,
 194                  struct vc4_bo *bo, uint32_t offset)
 195 {
 196         *(uint32_t *)cl->reloc_next = vc4_gem_hindex(job, bo);
 197         cl_advance(&cl->reloc_next, 4);
 198
 199 #ifdef DEBUG
 200         cl->reloc_count--;
 201 #endif
 202
 203         cl_aligned_u32(cl_out, offset);
 204 }
 205
 206 void cl_ensure_space(struct vc4_cl *cl, uint32_t size);
 207
 208 #endif /* VC4_CL_H */