1#ifndef BRW_BATCH_H
2#define BRW_BATCH_H
3
4#include "main/mtypes.h"
5
6#include "brw_context.h"
7#include "brw_bufmgr.h"
8
9#ifdef __cplusplus
10extern "C" {
11#endif
12
13/* The kernel assumes batchbuffers are smaller than 256kB. */
14#define MAX_BATCH_SIZE (256 * 1024)
15
16/* 3DSTATE_BINDING_TABLE_POINTERS has a U16 offset from Surface State Base
17 * Address, which means that we can't put binding tables beyond 64kB.  This
18 * effectively limits the maximum statebuffer size to 64kB.
19 */
20#define MAX_STATE_SIZE (64 * 1024)
21
22struct brw_batch;
23
24void brw_batch_init(struct brw_context *brw);
25void brw_batch_free(struct brw_batch *batch);
26void brw_batch_save_state(struct brw_context *brw);
27bool brw_batch_saved_state_is_empty(struct brw_context *brw);
28void brw_batch_reset_to_saved(struct brw_context *brw);
29void brw_batch_require_space(struct brw_context *brw, GLuint sz);
30int _brw_batch_flush_fence(struct brw_context *brw,
31                                   int in_fence_fd, int *out_fence_fd,
32                                   const char *file, int line);
33void brw_batch_maybe_noop(struct brw_context *brw);
34
35#define brw_batch_flush(brw) \
36   _brw_batch_flush_fence((brw), -1, NULL, __FILE__, __LINE__)
37
38#define brw_batch_flush_fence(brw, in_fence_fd, out_fence_fd) \
39   _brw_batch_flush_fence((brw), (in_fence_fd), (out_fence_fd), \
40                                  __FILE__, __LINE__)
41
42/* Unlike bmBufferData, this currently requires the buffer be mapped.
43 * Consider it a convenience function wrapping multple
44 * brw_buffer_dword() calls.
45 */
46void brw_batch_data(struct brw_context *brw,
47                            const void *data, GLuint bytes);
48
49static inline bool
50brw_batch_has_aperture_space(struct brw_context *brw, uint64_t extra_space)
51{
52   return brw->batch.aperture_space + extra_space <=
53          brw->screen->aperture_threshold;
54}
55
56bool brw_batch_references(struct brw_batch *batch, struct brw_bo *bo);
57
58#define RELOC_WRITE EXEC_OBJECT_WRITE
59#define RELOC_NEEDS_GGTT EXEC_OBJECT_NEEDS_GTT
60/* Inverted meaning, but using the same bit...emit_reloc will flip it. */
61#define RELOC_32BIT EXEC_OBJECT_SUPPORTS_48B_ADDRESS
62
63void brw_use_pinned_bo(struct brw_batch *batch, struct brw_bo *bo,
64                       unsigned writeable_flag);
65
66uint64_t brw_batch_reloc(struct brw_batch *batch,
67                         uint32_t batch_offset,
68                         struct brw_bo *target,
69                         uint32_t target_offset,
70                         unsigned flags);
71uint64_t brw_state_reloc(struct brw_batch *batch,
72                         uint32_t batch_offset,
73                         struct brw_bo *target,
74                         uint32_t target_offset,
75                         unsigned flags);
76
77#define USED_BATCH(_batch) \
78   ((uintptr_t)((_batch).map_next - (_batch).batch.map))
79
80static inline uint32_t float_as_int(float f)
81{
82   union {
83      float f;
84      uint32_t d;
85   } fi;
86
87   fi.f = f;
88   return fi.d;
89}
90
91static inline void
92brw_batch_begin(struct brw_context *brw, int n)
93{
94   brw_batch_require_space(brw, n * 4);
95
96#ifdef DEBUG
97   brw->batch.emit = USED_BATCH(brw->batch);
98   brw->batch.total = n;
99#endif
100}
101
102static inline void
103brw_batch_advance(struct brw_context *brw)
104{
105#ifdef DEBUG
106   struct brw_batch *batch = &brw->batch;
107   unsigned int _n = USED_BATCH(*batch) - batch->emit;
108   assert(batch->total != 0);
109   if (_n != batch->total) {
110      fprintf(stderr, "ADVANCE_BATCH: %d of %d dwords emitted\n",
111              _n, batch->total);
112      abort();
113   }
114   batch->total = 0;
115#else
116   (void) brw;
117#endif
118}
119
120static inline bool
121brw_ptr_in_state_buffer(struct brw_batch *batch, void *p)
122{
123   return (char *) p >= (char *) batch->state.map &&
124          (char *) p < (char *) batch->state.map + batch->state.bo->size;
125}
126
127#define BEGIN_BATCH(n) do {                            \
128   brw_batch_begin(brw, (n));                  \
129   uint32_t *__map = brw->batch.map_next;              \
130   brw->batch.map_next += (n)
131
132#define BEGIN_BATCH_BLT(n) do {                        \
133   assert(brw->screen->devinfo.ver < 6);               \
134   brw_batch_begin(brw, (n));                  \
135   uint32_t *__map = brw->batch.map_next;              \
136   brw->batch.map_next += (n)
137
138#define OUT_BATCH(d) *__map++ = (d)
139#define OUT_BATCH_F(f) OUT_BATCH(float_as_int((f)))
140
141#define OUT_RELOC(buf, flags, delta) do {          \
142   uint32_t __offset = (__map - brw->batch.batch.map) * 4;              \
143   uint32_t reloc =                                                     \
144      brw_batch_reloc(&brw->batch, __offset, (buf), (delta), (flags));  \
145   OUT_BATCH(reloc);                                                    \
146} while (0)
147
148/* Handle 48-bit address relocations for Gfx8+ */
149#define OUT_RELOC64(buf, flags, delta) do {        \
150   uint32_t __offset = (__map - brw->batch.batch.map) * 4;              \
151   uint64_t reloc64 =                                                   \
152      brw_batch_reloc(&brw->batch, __offset, (buf), (delta), (flags));  \
153   OUT_BATCH(reloc64);                                                  \
154   OUT_BATCH(reloc64 >> 32);                                            \
155} while (0)
156
157#define ADVANCE_BATCH()                  \
158   assert(__map == brw->batch.map_next); \
159   brw_batch_advance(brw);       \
160} while (0)
161
162#ifdef __cplusplus
163}
164#endif
165
166#endif
167