i915_sw_batchbuffer.c revision 135b083461f8a5a220d86f57af018f6f0316d2bb 
1
2#include "i915_sw_winsys.h"
3#include "i915/i915_batchbuffer.h"
4#include "util/u_memory.h"
5
6#define BATCH_RESERVED 16
7
8#define INTEL_DEFAULT_RELOCS 100
9#define INTEL_MAX_RELOCS 400
10
11#define INTEL_BATCH_NO_CLIPRECTS 0x1
12#define INTEL_BATCH_CLIPRECTS    0x2
13
14#define INTEL_ALWAYS_FLUSH
15
16struct i915_sw_batchbuffer
17{
18   struct i915_winsys_batchbuffer base;
19
20   size_t actual_size;
21};
22
23static INLINE struct i915_sw_batchbuffer *
24i915_sw_batchbuffer(struct i915_winsys_batchbuffer *batch)
25{
26   return (struct i915_sw_batchbuffer *)batch;
27}
28
29static void
30i915_sw_batchbuffer_reset(struct i915_sw_batchbuffer *batch)
31{
32   memset(batch->base.map, 0, batch->actual_size);
33   batch->base.ptr = batch->base.map;
34   batch->base.size = batch->actual_size - BATCH_RESERVED;
35   batch->base.relocs = 0;
36}
37
38static struct i915_winsys_batchbuffer *
39i915_sw_batchbuffer_create(struct i915_winsys *iws)
40{
41   struct i915_sw_winsys *isws = i915_sw_winsys(iws);
42   struct i915_sw_batchbuffer *batch = CALLOC_STRUCT(i915_sw_batchbuffer);
43
44   batch->actual_size = isws->max_batch_size;
45
46   batch->base.map = MALLOC(batch->actual_size);
47   batch->base.ptr = NULL;
48   batch->base.size = 0;
49
50   batch->base.relocs = 0;
51   batch->base.max_relocs = 300;/*INTEL_DEFAULT_RELOCS;*/
52
53   batch->base.iws = iws;
54
55   i915_sw_batchbuffer_reset(batch);
56
57   return &batch->base;
58}
59
60static int
61i915_sw_batchbuffer_reloc(struct i915_winsys_batchbuffer *ibatch,
62                          struct i915_winsys_buffer *buffer,
63                          enum i915_winsys_buffer_usage usage,
64                          unsigned pre_add, bool fenced)
65{
66   struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
67   int ret = 0;
68
69   assert(batch->base.relocs < batch->base.max_relocs);
70
71   if (usage == I915_USAGE_SAMPLER) {
72
73   } else if (usage == I915_USAGE_RENDER) {
74
75   } else if (usage == I915_USAGE_2D_TARGET) {
76
77   } else if (usage == I915_USAGE_2D_SOURCE) {
78
79   } else if (usage == I915_USAGE_VERTEX) {
80
81   } else {
82      assert(0);
83      return -1;
84   }
85
86   ((uint32_t*)batch->base.ptr)[0] = 0;
87   batch->base.ptr += 4;
88
89   if (!ret)
90      batch->base.relocs++;
91
92   return ret;
93}
94
95static void
96i915_sw_batchbuffer_flush(struct i915_winsys_batchbuffer *ibatch,
97                          struct pipe_fence_handle **fence)
98{
99   struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
100   unsigned used = 0;
101   int i;
102
103   assert(i915_winsys_batchbuffer_space(ibatch) >= 0);
104
105   used = batch->base.ptr - batch->base.map;
106   assert((used & 3) == 0);
107
108#ifdef INTEL_ALWAYS_FLUSH
109   /* MI_FLUSH | FLUSH_MAP_CACHE */
110   i915_winsys_batchbuffer_dword(ibatch, (0x4<<23)|(1<<0));
111   used += 4;
112#endif
113
114   if ((used & 4) == 0) {
115      /* MI_NOOP */
116      i915_winsys_batchbuffer_dword(ibatch, 0);
117   }
118   /* MI_BATCH_BUFFER_END */
119   i915_winsys_batchbuffer_dword(ibatch, (0xA<<23));
120
121   used = batch->base.ptr - batch->base.map;
122   assert((used & 4) == 0);
123
124   if (i915_sw_winsys(ibatch->iws)->dump_cmd) {
125      unsigned *ptr = (unsigned *)batch->base.map;
126
127      debug_printf("%s:\n", __func__);
128      for (i = 0; i < used / 4; i++, ptr++) {
129         debug_printf("\t%08x:    %08x\n", i*4, *ptr);
130      }
131   }
132
133   if (fence) {
134      ibatch->iws->fence_reference(ibatch->iws, fence, NULL);
135
136      (*fence) = i915_sw_fence_create();
137   }
138
139   i915_sw_batchbuffer_reset(batch);
140}
141
142static void
143i915_sw_batchbuffer_destroy(struct i915_winsys_batchbuffer *ibatch)
144{
145   struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
146
147   FREE(batch->base.map);
148   FREE(batch);
149}
150
151void i915_sw_winsys_init_batchbuffer_functions(struct i915_sw_winsys *isws)
152{
153   isws->base.batchbuffer_create = i915_sw_batchbuffer_create;
154   isws->base.batchbuffer_reloc = i915_sw_batchbuffer_reloc;
155   isws->base.batchbuffer_flush = i915_sw_batchbuffer_flush;
156   isws->base.batchbuffer_destroy = i915_sw_batchbuffer_destroy;
157}
158