src/gallium/winsys/i915/sw/i915_sw_batchbuffer.c

   1
   2 #include "i915_sw_winsys.h"
   3 #include "i915/i915_batchbuffer.h"
   4 #include "i915/i915_debug.h"
   5 #include "util/u_memory.h"
   6
   7 #define BATCH_RESERVED 16
   8
   9 #define INTEL_DEFAULT_RELOCS 100
  10 #define INTEL_MAX_RELOCS 400
  11
  12 #define INTEL_BATCH_NO_CLIPRECTS 0x1
  13 #define INTEL_BATCH_CLIPRECTS    0x2
  14
  15 #define INTEL_ALWAYS_FLUSH
  16
  17 struct i915_sw_batchbuffer
  18 {
  19    struct i915_winsys_batchbuffer base;
  20
  21    size_t actual_size;
  22 };
  23
  24 static INLINE struct i915_sw_batchbuffer *
  25 i915_sw_batchbuffer(struct i915_winsys_batchbuffer *batch)
  26 {
  27    return (struct i915_sw_batchbuffer *)batch;
  28 }
  29
  30 static void
  31 i915_sw_batchbuffer_reset(struct i915_sw_batchbuffer *batch)
  32 {
  33    memset(batch->base.map, 0, batch->actual_size);
  34    batch->base.ptr = batch->base.map;
  35    batch->base.size = batch->actual_size - BATCH_RESERVED;
  36    batch->base.relocs = 0;
  37 }
  38
  39 static struct i915_winsys_batchbuffer *
  40 i915_sw_batchbuffer_create(struct i915_winsys *iws)
  41 {
  42    struct i915_sw_winsys *isws = i915_sw_winsys(iws);
  43    struct i915_sw_batchbuffer *batch = CALLOC_STRUCT(i915_sw_batchbuffer);
  44
  45    batch->actual_size = isws->max_batch_size;
  46
  47    batch->base.map = MALLOC(batch->actual_size);
  48    batch->base.ptr = NULL;
  49    batch->base.size = 0;
  50
  51    batch->base.relocs = 0;
  52    batch->base.max_relocs = 300;/*INTEL_DEFAULT_RELOCS;*/
  53
  54    batch->base.iws = iws;
  55
  56    i915_sw_batchbuffer_reset(batch);
  57
  58    return &batch->base;
  59 }
  60
  61 static int
  62 i915_sw_batchbuffer_reloc(struct i915_winsys_batchbuffer *ibatch,
  63                           struct i915_winsys_buffer *buffer,
  64                           enum i915_winsys_buffer_usage usage,
  65                           unsigned pre_add, boolean fenced)
  66 {
  67    struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
  68    int ret = 0;
  69
  70    assert(batch->base.relocs < batch->base.max_relocs);
  71
  72    if (usage == I915_USAGE_SAMPLER) {
  73
  74    } else if (usage == I915_USAGE_RENDER) {
  75
  76    } else if (usage == I915_USAGE_2D_TARGET) {
  77
  78    } else if (usage == I915_USAGE_2D_SOURCE) {
  79
  80    } else if (usage == I915_USAGE_VERTEX) {
  81
  82    } else {
  83       assert(0);
  84       return -1;
  85    }
  86
  87    ((uint32_t*)batch->base.ptr)[0] = 0;
  88    batch->base.ptr += 4;
  89
  90    if (!ret)
  91       batch->base.relocs++;
  92
  93    return ret;
  94 }
  95
  96 static void
  97 i915_sw_batchbuffer_flush(struct i915_winsys_batchbuffer *ibatch,
  98                           struct pipe_fence_handle **fence)
  99 {
 100    struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
 101    unsigned used = 0;
 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_unchecked(ibatch, (0x4<<23)|(1<<0));
 111    used += 4;
 112 #endif
 113
 114    if ((used & 4) == 0) {
 115       /* MI_NOOP */
 116       i915_winsys_batchbuffer_dword_unchecked(ibatch, 0);
 117    }
 118    /* MI_BATCH_BUFFER_END */
 119    i915_winsys_batchbuffer_dword_unchecked(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       i915_dump_batchbuffer(ibatch);
 126    }
 127
 128    if (fence) {
 129       ibatch->iws->fence_reference(ibatch->iws, fence, NULL);
 130
 131       (*fence) = i915_sw_fence_create();
 132    }
 133
 134    i915_sw_batchbuffer_reset(batch);
 135 }
 136
 137 static void
 138 i915_sw_batchbuffer_destroy(struct i915_winsys_batchbuffer *ibatch)
 139 {
 140    struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
 141
 142    FREE(batch->base.map);
 143    FREE(batch);
 144 }
 145
 146 void i915_sw_winsys_init_batchbuffer_functions(struct i915_sw_winsys *isws)
 147 {
 148    isws->base.batchbuffer_create = i915_sw_batchbuffer_create;
 149    isws->base.batchbuffer_reloc = i915_sw_batchbuffer_reloc;
 150    isws->base.batchbuffer_flush = i915_sw_batchbuffer_flush;
 151    isws->base.batchbuffer_destroy = i915_sw_batchbuffer_destroy;
 152 }