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
  53    batch->base.iws = iws;
  54
  55    i915_sw_batchbuffer_reset(batch);
  56
  57    return &batch->base;
  58 }
  59
  60 static boolean
  61 i915_sw_batchbuffer_validate_buffers(struct i915_winsys_batchbuffer *batch,
  62                                      struct i915_winsys_buffer **buffer,
  63                                      int num_of_buffers)
  64 {
  65    return TRUE;
  66 }
  67
  68 static int
  69 i915_sw_batchbuffer_reloc(struct i915_winsys_batchbuffer *ibatch,
  70                           struct i915_winsys_buffer *buffer,
  71                           enum i915_winsys_buffer_usage usage,
  72                           unsigned pre_add, boolean fenced)
  73 {
  74    struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
  75    int ret = 0;
  76
  77    if (usage == I915_USAGE_SAMPLER) {
  78
  79    } else if (usage == I915_USAGE_RENDER) {
  80
  81    } else if (usage == I915_USAGE_2D_TARGET) {
  82
  83    } else if (usage == I915_USAGE_2D_SOURCE) {
  84
  85    } else if (usage == I915_USAGE_VERTEX) {
  86
  87    } else {
  88       assert(0);
  89       return -1;
  90    }
  91
  92    ((uint32_t*)batch->base.ptr)[0] = 0;
  93    batch->base.ptr += 4;
  94
  95    if (!ret)
  96       batch->base.relocs++;
  97
  98    return ret;
  99 }
 100
 101 static void
 102 i915_sw_batchbuffer_flush(struct i915_winsys_batchbuffer *ibatch,
 103                           struct pipe_fence_handle **fence)
 104 {
 105    struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
 106    unsigned used = 0;
 107
 108    assert(i915_winsys_batchbuffer_space(ibatch) >= 0);
 109
 110    used = batch->base.ptr - batch->base.map;
 111    assert((used & 3) == 0);
 112
 113 #ifdef INTEL_ALWAYS_FLUSH
 114    /* MI_FLUSH | FLUSH_MAP_CACHE */
 115    i915_winsys_batchbuffer_dword_unchecked(ibatch, (0x4<<23)|(1<<0));
 116    used += 4;
 117 #endif
 118
 119    if ((used & 4) == 0) {
 120       /* MI_NOOP */
 121       i915_winsys_batchbuffer_dword_unchecked(ibatch, 0);
 122    }
 123    /* MI_BATCH_BUFFER_END */
 124    i915_winsys_batchbuffer_dword_unchecked(ibatch, (0xA<<23));
 125
 126    used = batch->base.ptr - batch->base.map;
 127    assert((used & 4) == 0);
 128
 129    if (i915_sw_winsys(ibatch->iws)->dump_cmd) {
 130       i915_dump_batchbuffer(ibatch);
 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
 142 static void
 143 i915_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
 151 void i915_sw_winsys_init_batchbuffer_functions(struct i915_sw_winsys *isws)
 152 {
 153    isws->base.batchbuffer_create = i915_sw_batchbuffer_create;
 154    isws->base.validate_buffers = i915_sw_batchbuffer_validate_buffers;
 155    isws->base.batchbuffer_reloc = i915_sw_batchbuffer_reloc;
 156    isws->base.batchbuffer_flush = i915_sw_batchbuffer_flush;
 157    isws->base.batchbuffer_destroy = i915_sw_batchbuffer_destroy;
 158 }