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 /* 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
22 struct intel_batchbuffer;
23
24 void intel_batchbuffer_init(struct brw_context *brw);
25 void intel_batchbuffer_free(struct intel_batchbuffer *batch);
26 void intel_batchbuffer_save_state(struct brw_context *brw);
27 bool intel_batchbuffer_saved_state_is_empty(struct brw_context *brw);
28 void intel_batchbuffer_reset_to_saved(struct brw_context *brw);
29 void intel_batchbuffer_require_space(struct brw_context *brw, GLuint sz);
30 int _intel_batchbuffer_flush_fence(struct brw_context *brw,
31 int in_fence_fd, int *out_fence_fd,
32 const char *file, int line);
33 void intel_batchbuffer_maybe_noop(struct brw_context *brw);
34
35 #define intel_batchbuffer_flush(brw) \
36 _intel_batchbuffer_flush_fence((brw), -1, NULL, __FILE__, __LINE__)
37
38 #define intel_batchbuffer_flush_fence(brw, in_fence_fd, out_fence_fd) \
39 _intel_batchbuffer_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 * intel_buffer_dword() calls.
45 */
46 void intel_batchbuffer_data(struct brw_context *brw,
47 const void *data, GLuint bytes);
48
49 static inline bool
brw_batch_has_aperture_space(struct brw_context * brw,uint64_t extra_space)50 brw_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
56 bool brw_batch_references(struct intel_batchbuffer *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
63 void brw_use_pinned_bo(struct intel_batchbuffer *batch, struct brw_bo *bo,
64 unsigned writeable_flag);
65
66 uint64_t brw_batch_reloc(struct intel_batchbuffer *batch,
67 uint32_t batch_offset,
68 struct brw_bo *target,
69 uint32_t target_offset,
70 unsigned flags);
71 uint64_t brw_state_reloc(struct intel_batchbuffer *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
float_as_int(float f)80 static 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
91 static inline void
intel_batchbuffer_begin(struct brw_context * brw,int n)92 intel_batchbuffer_begin(struct brw_context *brw, int n)
93 {
94 intel_batchbuffer_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
102 static inline void
intel_batchbuffer_advance(struct brw_context * brw)103 intel_batchbuffer_advance(struct brw_context *brw)
104 {
105 #ifdef DEBUG
106 struct intel_batchbuffer *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
120 static inline bool
brw_ptr_in_state_buffer(struct intel_batchbuffer * batch,void * p)121 brw_ptr_in_state_buffer(struct intel_batchbuffer *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 intel_batchbuffer_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.gen < 6); \
134 intel_batchbuffer_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 Gen8+ */
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 intel_batchbuffer_advance(brw); \
160 } while (0)
161
162 #ifdef __cplusplus
163 }
164 #endif
165
166 #endif
167