src/mesa/drivers/dri/i965/intel_batchbuffer.h

   1 #ifndef INTEL_BATCHBUFFER_H
   2 #define INTEL_BATCHBUFFER_H
   3
   4 #include "main/mtypes.h"
   5
   6 #include "brw_context.h"
   7 #include "brw_bufmgr.h"
   8
   9 #ifdef __cplusplus
  10 extern "C" {
  11 #endif
  12
  13 struct intel_batchbuffer;
  14
  15 void intel_batchbuffer_init(struct brw_context *brw);
  16 void intel_batchbuffer_free(struct intel_batchbuffer *batch);
  17 void intel_batchbuffer_save_state(struct brw_context *brw);
  18 void intel_batchbuffer_reset_to_saved(struct brw_context *brw);
  19 void intel_batchbuffer_require_space(struct brw_context *brw, GLuint sz,
  20                                      enum brw_gpu_ring ring);
  21 int _intel_batchbuffer_flush_fence(struct brw_context *brw,
  22                                    int in_fence_fd, int *out_fence_fd,
  23                                    const char *file, int line);
  24
  25 #define intel_batchbuffer_flush(brw) \
  26    _intel_batchbuffer_flush_fence((brw), -1, NULL, __FILE__, __LINE__)
  27
  28 #define intel_batchbuffer_flush_fence(brw, in_fence_fd, out_fence_fd) \
  29    _intel_batchbuffer_flush_fence((brw), (in_fence_fd), (out_fence_fd), \
  30                                   __FILE__, __LINE__)
  31
  32 /* Unlike bmBufferData, this currently requires the buffer be mapped.
  33  * Consider it a convenience function wrapping multple
  34  * intel_buffer_dword() calls.
  35  */
  36 void intel_batchbuffer_data(struct brw_context *brw,
  37                             const void *data, GLuint bytes,
  38                             enum brw_gpu_ring ring);
  39
  40 bool brw_batch_has_aperture_space(struct brw_context *brw,
  41                                   unsigned extra_space_in_bytes);
  42
  43 bool brw_batch_references(struct intel_batchbuffer *batch, struct brw_bo *bo);
  44
  45 #define RELOC_WRITE EXEC_OBJECT_WRITE
  46 #define RELOC_NEEDS_GGTT EXEC_OBJECT_NEEDS_GTT
  47 uint64_t brw_batch_reloc(struct intel_batchbuffer *batch,
  48                          uint32_t batch_offset,
  49                          struct brw_bo *target,
  50                          uint32_t target_offset,
  51                          unsigned flags);
  52 uint64_t brw_state_reloc(struct intel_batchbuffer *batch,
  53                          uint32_t batch_offset,
  54                          struct brw_bo *target,
  55                          uint32_t target_offset,
  56                          unsigned flags);
  57
  58 #define USED_BATCH(batch) ((uintptr_t)((batch).map_next - (batch).map))
  59
  60 static inline uint32_t float_as_int(float f)
  61 {
  62    union {
  63       float f;
  64       uint32_t d;
  65    } fi;
  66
  67    fi.f = f;
  68    return fi.d;
  69 }
  70
  71 static inline void
  72 intel_batchbuffer_emit_dword(struct intel_batchbuffer *batch, GLuint dword)
  73 {
  74    *batch->map_next++ = dword;
  75    assert(batch->ring != UNKNOWN_RING);
  76 }
  77
  78 static inline void
  79 intel_batchbuffer_emit_float(struct intel_batchbuffer *batch, float f)
  80 {
  81    intel_batchbuffer_emit_dword(batch, float_as_int(f));
  82 }
  83
  84 static inline void
  85 intel_batchbuffer_begin(struct brw_context *brw, int n, enum brw_gpu_ring ring)
  86 {
  87    intel_batchbuffer_require_space(brw, n * 4, ring);
  88
  89 #ifdef DEBUG
  90    brw->batch.emit = USED_BATCH(brw->batch);
  91    brw->batch.total = n;
  92 #endif
  93 }
  94
  95 static inline void
  96 intel_batchbuffer_advance(struct brw_context *brw)
  97 {
  98 #ifdef DEBUG
  99    struct intel_batchbuffer *batch = &brw->batch;
 100    unsigned int _n = USED_BATCH(*batch) - batch->emit;
 101    assert(batch->total != 0);
 102    if (_n != batch->total) {
 103       fprintf(stderr, "ADVANCE_BATCH: %d of %d dwords emitted\n",
 104               _n, batch->total);
 105       abort();
 106    }
 107    batch->total = 0;
 108 #else
 109    (void) brw;
 110 #endif
 111 }
 112
 113 static inline bool
 114 brw_ptr_in_state_buffer(struct intel_batchbuffer *batch, void *p)
 115 {
 116    return (char *) p >= (char *) batch->state_map &&
 117           (char *) p < (char *) batch->state_map + batch->state_bo->size;
 118 }
 119
 120 #define BEGIN_BATCH(n) do {                            \
 121    intel_batchbuffer_begin(brw, (n), RENDER_RING);     \
 122    uint32_t *__map = brw->batch.map_next;              \
 123    brw->batch.map_next += (n)
 124
 125 #define BEGIN_BATCH_BLT(n) do {                        \
 126    intel_batchbuffer_begin(brw, (n), BLT_RING);        \
 127    uint32_t *__map = brw->batch.map_next;              \
 128    brw->batch.map_next += (n)
 129
 130 #define OUT_BATCH(d) *__map++ = (d)
 131 #define OUT_BATCH_F(f) OUT_BATCH(float_as_int((f)))
 132
 133 #define OUT_RELOC(buf, flags, delta) do {          \
 134    uint32_t __offset = (__map - brw->batch.map) * 4;                    \
 135    uint32_t reloc =                                                     \
 136       brw_batch_reloc(&brw->batch, __offset, (buf), (delta), (flags));  \
 137    OUT_BATCH(reloc);                                                    \
 138 } while (0)
 139
 140 /* Handle 48-bit address relocations for Gen8+ */
 141 #define OUT_RELOC64(buf, flags, delta) do {        \
 142    uint32_t __offset = (__map - brw->batch.map) * 4;                    \
 143    uint64_t reloc64 =                                                   \
 144       brw_batch_reloc(&brw->batch, __offset, (buf), (delta), (flags));  \
 145    OUT_BATCH(reloc64);                                                  \
 146    OUT_BATCH(reloc64 >> 32);                                            \
 147 } while (0)
 148
 149 #define ADVANCE_BATCH()                  \
 150    assert(__map == brw->batch.map_next); \
 151    intel_batchbuffer_advance(brw);       \
 152 } while (0)
 153
 154 #ifdef __cplusplus
 155 }
 156 #endif
 157
 158 #endif