1 files changed, 157 insertions, 0 deletions
diff --git a/src/gallium/winsys/i915/sw/i915_sw_batchbuffer.c b/src/gallium/winsys/i915/sw/i915_sw_batchbuffer.c
new file mode 100644
index 0000000000..a480cfed57
--- /dev/null
+++ b/src/gallium/winsys/i915/sw/i915_sw_batchbuffer.c
@@ -0,0 +1,157 @@
+
+#include "i915_sw_winsys.h"
+#include "i915/i915_batchbuffer.h"
+#include "util/u_memory.h"
+
+#define BATCH_RESERVED 16
+
+#define INTEL_DEFAULT_RELOCS 100
+#define INTEL_MAX_RELOCS 400
+
+#define INTEL_BATCH_NO_CLIPRECTS 0x1
+#define INTEL_BATCH_CLIPRECTS    0x2
+
+#define INTEL_ALWAYS_FLUSH
+
+struct i915_sw_batchbuffer
+{
+   struct i915_winsys_batchbuffer base;
+
+   size_t actual_size;
+};
+
+static INLINE struct i915_sw_batchbuffer *
+i915_sw_batchbuffer(struct i915_winsys_batchbuffer *batch)
+{
+   return (struct i915_sw_batchbuffer *)batch;
+}
+
+static void
+i915_sw_batchbuffer_reset(struct i915_sw_batchbuffer *batch)
+{
+   memset(batch->base.map, 0, batch->actual_size);
+   batch->base.ptr = batch->base.map;
+   batch->base.size = batch->actual_size - BATCH_RESERVED;
+   batch->base.relocs = 0;
+}
+
+static struct i915_winsys_batchbuffer *
+i915_sw_batchbuffer_create(struct i915_winsys *iws)
+{
+   struct i915_sw_winsys *isws = i915_sw_winsys(iws);
+   struct i915_sw_batchbuffer *batch = CALLOC_STRUCT(i915_sw_batchbuffer);
+
+   batch->actual_size = isws->max_batch_size;
+
+   batch->base.map = MALLOC(batch->actual_size);
+   batch->base.ptr = NULL;
+   batch->base.size = 0;
+
+   batch->base.relocs = 0;
+   batch->base.max_relocs = 300;/*INTEL_DEFAULT_RELOCS;*/
+
+   batch->base.iws = iws;
+
+   i915_sw_batchbuffer_reset(batch);
+
+   return &batch->base;
+}
+
+static int
+i915_sw_batchbuffer_reloc(struct i915_winsys_batchbuffer *ibatch,
+                          struct i915_winsys_buffer *buffer,
+                          enum i915_winsys_buffer_usage usage,
+                          unsigned pre_add)
+{
+   struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
+   int ret = 0;
+
+   assert(batch->base.relocs < batch->base.max_relocs);
+
+   if (usage == I915_USAGE_SAMPLER) {
+
+   } else if (usage == I915_USAGE_RENDER) {
+
+   } else if (usage == I915_USAGE_2D_TARGET) {
+
+   } else if (usage == I915_USAGE_2D_SOURCE) {
+
+   } else if (usage == I915_USAGE_VERTEX) {
+
+   } else {
+      assert(0);
+      return -1;
+   }
+
+   ((uint32_t*)batch->base.ptr)[0] = 0;
+   batch->base.ptr += 4;
+
+   if (!ret)
+      batch->base.relocs++;
+
+   return ret;
+}
+
+static void
+i915_sw_batchbuffer_flush(struct i915_winsys_batchbuffer *ibatch,
+                          struct pipe_fence_handle **fence)
+{
+   struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
+   unsigned used = 0;
+   int i;
+
+   assert(i915_winsys_batchbuffer_space(ibatch) >= 0);
+
+   used = batch->base.ptr - batch->base.map;
+   assert((used & 3) == 0);
+
+#ifdef INTEL_ALWAYS_FLUSH
+   /* MI_FLUSH | FLUSH_MAP_CACHE */
+   i915_winsys_batchbuffer_dword(ibatch, (0x4<<23)|(1<<0));
+   used += 4;
+#endif
+
+   if ((used & 4) == 0) {
+      /* MI_NOOP */
+      i915_winsys_batchbuffer_dword(ibatch, 0);
+   }
+   /* MI_BATCH_BUFFER_END */
+   i915_winsys_batchbuffer_dword(ibatch, (0xA<<23));
+
+   used = batch->base.ptr - batch->base.map;
+   assert((used & 4) == 0);
+
+   if (i915_sw_winsys(ibatch->iws)->dump_cmd) {
+      unsigned *ptr = (unsigned *)batch->base.map;
+
+      debug_printf("%s:\n", __func__);
+      for (i = 0; i < used / 4; i++, ptr++) {
+         debug_printf("\t%08x:    %08x\n", i*4, *ptr);
+      }
+   }
+
+   if (fence) {
+      ibatch->iws->fence_reference(ibatch->iws, fence, NULL);
+
+      (*fence) = i915_sw_fence_create();
+   }
+
+   i915_sw_batchbuffer_reset(batch);
+}
+
+static void
+i915_sw_batchbuffer_destroy(struct i915_winsys_batchbuffer *ibatch)
+{
+   struct i915_sw_batchbuffer *batch = i915_sw_batchbuffer(ibatch);
+
+   FREE(batch->base.map);
+   FREE(batch);
+}
+
+void i915_sw_winsys_init_batchbuffer_functions(struct i915_sw_winsys *isws)
+{
+   isws->base.batchbuffer_create = i915_sw_batchbuffer_create;
+   isws->base.batchbuffer_reloc = i915_sw_batchbuffer_reloc;
+   isws->base.batchbuffer_flush = i915_sw_batchbuffer_flush;
+   isws->base.batchbuffer_destroy = i915_sw_batchbuffer_destroy;
+}