1#ifndef INTEL_BATCHBUFFER_H
2#define INTEL_BATCHBUFFER_H
3
4#include "main/mtypes.h"
5
6#include "intel_context.h"
7#include "intel_bufmgr.h"
8#include "intel_reg.h"
9
10#ifdef __cplusplus
11extern "C" {
12#endif
13
14/**
15 * Number of bytes to reserve for commands necessary to complete a batch.
16 *
17 * This includes:
18 * - MI_BATCHBUFFER_END (4 bytes)
19 * - Optional MI_NOOP for ensuring the batch length is qword aligned (4 bytes)
20 * - Any state emitted by vtbl->finish_batch()
21 *   - On 965+, this means ending occlusion queries (on Gen6, which has the
22 *     most workaround flushes, this can be as much as (4+4+5)*4 = 52 bytes)
23 */
24#define BATCH_RESERVED 60
25
26struct intel_batchbuffer;
27
28void intel_batchbuffer_init(struct intel_context *intel);
29void intel_batchbuffer_reset(struct intel_context *intel);
30void intel_batchbuffer_free(struct intel_context *intel);
31void intel_batchbuffer_save_state(struct intel_context *intel);
32void intel_batchbuffer_reset_to_saved(struct intel_context *intel);
33
34int _intel_batchbuffer_flush(struct intel_context *intel,
35			     const char *file, int line);
36
37#define intel_batchbuffer_flush(intel) \
38	_intel_batchbuffer_flush(intel, __FILE__, __LINE__)
39
40
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 */
46void intel_batchbuffer_data(struct intel_context *intel,
47                            const void *data, GLuint bytes, bool is_blit);
48
49bool intel_batchbuffer_emit_reloc(struct intel_context *intel,
50                                       drm_intel_bo *buffer,
51				       uint32_t read_domains,
52				       uint32_t write_domain,
53				       uint32_t offset);
54bool intel_batchbuffer_emit_reloc_fenced(struct intel_context *intel,
55					      drm_intel_bo *buffer,
56					      uint32_t read_domains,
57					      uint32_t write_domain,
58					      uint32_t offset);
59void intel_batchbuffer_emit_mi_flush(struct intel_context *intel);
60void intel_emit_post_sync_nonzero_flush(struct intel_context *intel);
61void intel_emit_depth_stall_flushes(struct intel_context *intel);
62void gen7_emit_vs_workaround_flush(struct intel_context *intel);
63
64static INLINE uint32_t float_as_int(float f)
65{
66   union {
67      float f;
68      uint32_t d;
69   } fi;
70
71   fi.f = f;
72   return fi.d;
73}
74
75/* Inline functions - might actually be better off with these
76 * non-inlined.  Certainly better off switching all command packets to
77 * be passed as structs rather than dwords, but that's a little bit of
78 * work...
79 */
80static INLINE unsigned
81intel_batchbuffer_space(struct intel_context *intel)
82{
83   return (intel->batch.state_batch_offset - intel->batch.reserved_space)
84      - intel->batch.used*4;
85}
86
87
88static INLINE void
89intel_batchbuffer_emit_dword(struct intel_context *intel, GLuint dword)
90{
91#ifdef DEBUG
92   assert(intel_batchbuffer_space(intel) >= 4);
93#endif
94   intel->batch.map[intel->batch.used++] = dword;
95}
96
97static INLINE void
98intel_batchbuffer_emit_float(struct intel_context *intel, float f)
99{
100   intel_batchbuffer_emit_dword(intel, float_as_int(f));
101}
102
103static INLINE void
104intel_batchbuffer_require_space(struct intel_context *intel,
105                                GLuint sz, int is_blit)
106{
107
108   if (intel->gen >= 6 &&
109       intel->batch.is_blit != is_blit && intel->batch.used) {
110      intel_batchbuffer_flush(intel);
111   }
112
113   intel->batch.is_blit = is_blit;
114
115#ifdef DEBUG
116   assert(sz < sizeof(intel->batch.map) - BATCH_RESERVED);
117#endif
118   if (intel_batchbuffer_space(intel) < sz)
119      intel_batchbuffer_flush(intel);
120}
121
122static INLINE void
123intel_batchbuffer_begin(struct intel_context *intel, int n, bool is_blit)
124{
125   intel_batchbuffer_require_space(intel, n * 4, is_blit);
126
127   intel->batch.emit = intel->batch.used;
128#ifdef DEBUG
129   intel->batch.total = n;
130#endif
131}
132
133static INLINE void
134intel_batchbuffer_advance(struct intel_context *intel)
135{
136#ifdef DEBUG
137   struct intel_batchbuffer *batch = &intel->batch;
138   unsigned int _n = batch->used - batch->emit;
139   assert(batch->total != 0);
140   if (_n != batch->total) {
141      fprintf(stderr, "ADVANCE_BATCH: %d of %d dwords emitted\n",
142	      _n, batch->total);
143      abort();
144   }
145   batch->total = 0;
146#endif
147}
148
149void intel_batchbuffer_cached_advance(struct intel_context *intel);
150
151/* Here are the crusty old macros, to be removed:
152 */
153#define BATCH_LOCALS
154
155#define BEGIN_BATCH(n) intel_batchbuffer_begin(intel, n, false)
156#define BEGIN_BATCH_BLT(n) intel_batchbuffer_begin(intel, n, true)
157#define OUT_BATCH(d) intel_batchbuffer_emit_dword(intel, d)
158#define OUT_BATCH_F(f) intel_batchbuffer_emit_float(intel,f)
159#define OUT_RELOC(buf, read_domains, write_domain, delta) do {		\
160   intel_batchbuffer_emit_reloc(intel, buf,			\
161				read_domains, write_domain, delta);	\
162} while (0)
163#define OUT_RELOC_FENCED(buf, read_domains, write_domain, delta) do {	\
164   intel_batchbuffer_emit_reloc_fenced(intel, buf,		\
165				       read_domains, write_domain, delta); \
166} while (0)
167
168#define ADVANCE_BATCH() intel_batchbuffer_advance(intel);
169#define CACHED_BATCH() intel_batchbuffer_cached_advance(intel);
170
171#ifdef __cplusplus
172}
173#endif
174
175#endif
176