Merge remote branch 'origin/master' into gallium_draw_llvm

7 files changed, 763 insertions, 0 deletions

diff --git a/src/gallium/winsys/i915/drm/Makefile b/src/gallium/winsys/i915/drm/Makefile
new file mode 100644
index 00000000000..a67b9e8a528
--- /dev/null
+++ b/src/gallium/winsys/i915/drm/Makefile
@@ -0,0 +1,16 @@
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = i915drm
+
+C_SOURCES = \
+	i915_drm_batchbuffer.c \
+	i915_drm_buffer.c \
+	i915_drm_fence.c \
+	i915_drm_api.c
+
+LIBRARY_INCLUDES = $(shell pkg-config libdrm --cflags-only-I)
+
+LIBRARY_DEFINES = $(shell pkg-config libdrm --cflags-only-other)
+
+include ../../../Makefile.template
diff --git a/src/gallium/winsys/i915/drm/SConscript b/src/gallium/winsys/i915/drm/SConscript
new file mode 100644
index 00000000000..ba29ac72fe7
--- /dev/null
+++ b/src/gallium/winsys/i915/drm/SConscript
@@ -0,0 +1,17 @@
+Import('*')
+
+env = env.Clone()
+
+i915drm_sources = [
+    'i915_drm_api.c',
+    'i915_drm_batchbuffer.c',
+    'i915_drm_buffer.c',
+    'i915_drm_fence.c',
+]
+
+i915drm = env.ConvenienceLibrary(
+    target ='i915drm',
+    source = i915drm_sources,
+)
+
+Export('i915drm')
diff --git a/src/gallium/winsys/i915/drm/i915_drm_api.c b/src/gallium/winsys/i915/drm/i915_drm_api.c
new file mode 100644
index 00000000000..6bb0aec1a67
--- /dev/null
+++ b/src/gallium/winsys/i915/drm/i915_drm_api.c
@@ -0,0 +1,109 @@
+#include <stdio.h>
+
+#include "state_tracker/drm_api.h"
+
+#include "i915_drm_winsys.h"
+#include "util/u_memory.h"
+
+#include "i915/i915_context.h"
+#include "i915/i915_screen.h"
+
+#include "trace/tr_drm.h"
+
+/*
+ * Helper functions
+ */
+
+
+static void
+i915_drm_get_device_id(unsigned int *device_id)
+{
+   char path[512];
+   FILE *file;
+   void *shutup_gcc;
+
+   /*
+    * FIXME: Fix this up to use a drm ioctl or whatever.
+    */
+
+   snprintf(path, sizeof(path), "/sys/class/drm/card0/device/device");
+   file = fopen(path, "r");
+   if (!file) {
+      return;
+   }
+
+   shutup_gcc = fgets(path, sizeof(path), file);
+   (void) shutup_gcc;
+   sscanf(path, "%x", device_id);
+   fclose(file);
+}
+
+static void
+i915_drm_winsys_destroy(struct i915_winsys *iws)
+{
+   struct i915_drm_winsys *idws = i915_drm_winsys(iws);
+
+   drm_intel_bufmgr_destroy(idws->pools.gem);
+
+   FREE(idws);
+}
+
+static struct pipe_screen *
+i915_drm_create_screen(struct drm_api *api, int drmFD,
+                       struct drm_create_screen_arg *arg)
+{
+   struct i915_drm_winsys *idws;
+   unsigned int deviceID;
+
+   if (arg != NULL) {
+      switch(arg->mode) {
+      case DRM_CREATE_NORMAL:
+         break;
+      default:
+         return NULL;
+      }
+   }
+
+   idws = CALLOC_STRUCT(i915_drm_winsys);
+   if (!idws)
+      return NULL;
+
+   i915_drm_get_device_id(&deviceID);
+
+   i915_drm_winsys_init_batchbuffer_functions(idws);
+   i915_drm_winsys_init_buffer_functions(idws);
+   i915_drm_winsys_init_fence_functions(idws);
+
+   idws->fd = drmFD;
+   idws->id = deviceID;
+   idws->max_batch_size = 16 * 4096;
+
+   idws->base.destroy = i915_drm_winsys_destroy;
+
+   idws->pools.gem = drm_intel_bufmgr_gem_init(idws->fd, idws->max_batch_size);
+   drm_intel_bufmgr_gem_enable_reuse(idws->pools.gem);
+
+   idws->dump_cmd = debug_get_bool_option("INTEL_DUMP_CMD", FALSE);
+
+   return i915_create_screen(&idws->base, deviceID);
+}
+
+static void
+destroy(struct drm_api *api)
+{
+
+}
+
+struct drm_api intel_drm_api =
+{
+   .name = "i915",
+   .driver_name = "i915",
+   .create_screen = i915_drm_create_screen,
+   .destroy = destroy,
+};
+
+struct drm_api *
+drm_api_create()
+{
+   return trace_drm_create(&intel_drm_api);
+}
diff --git a/src/gallium/winsys/i915/drm/i915_drm_batchbuffer.c b/src/gallium/winsys/i915/drm/i915_drm_batchbuffer.c
new file mode 100644
index 00000000000..102f59dc541
--- /dev/null
+++ b/src/gallium/winsys/i915/drm/i915_drm_batchbuffer.c
@@ -0,0 +1,244 @@
+
+#include "i915_drm_winsys.h"
+#include "util/u_memory.h"
+
+#include "i915_drm.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
+
+#undef INTEL_RUN_SYNC
+#undef INTEL_MAP_BATCHBUFFER
+#undef INTEL_MAP_GTT
+#define INTEL_ALWAYS_FLUSH
+
+struct i915_drm_batchbuffer
+{
+   struct i915_winsys_batchbuffer base;
+
+   size_t actual_size;
+
+   drm_intel_bo *bo;
+};
+
+static INLINE struct i915_drm_batchbuffer *
+i915_drm_batchbuffer(struct i915_winsys_batchbuffer *batch)
+{
+   return (struct i915_drm_batchbuffer *)batch;
+}
+
+static void
+i915_drm_batchbuffer_reset(struct i915_drm_batchbuffer *batch)
+{
+   struct i915_drm_winsys *idws = i915_drm_winsys(batch->base.iws);
+   int ret;
+
+   if (batch->bo)
+      drm_intel_bo_unreference(batch->bo);
+   batch->bo = drm_intel_bo_alloc(idws->pools.gem,
+                                  "gallium3d_batchbuffer",
+                                  batch->actual_size,
+                                  4096);
+
+#ifdef INTEL_MAP_BATCHBUFFER
+#ifdef INTEL_MAP_GTT
+   ret = drm_intel_gem_bo_map_gtt(batch->bo);
+#else
+   ret = drm_intel_bo_map(batch->bo, TRUE);
+#endif
+   assert(ret == 0);
+   batch->base.map = batch->bo->virtual;
+#else
+   (void)ret;
+#endif
+
+   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_drm_batchbuffer_create(struct i915_winsys *iws)
+{
+   struct i915_drm_winsys *idws = i915_drm_winsys(iws);
+   struct i915_drm_batchbuffer *batch = CALLOC_STRUCT(i915_drm_batchbuffer);
+
+   batch->actual_size = idws->max_batch_size;
+
+#ifdef INTEL_MAP_BATCHBUFFER
+   batch->base.map = NULL;
+#else
+   batch->base.map = MALLOC(batch->actual_size);
+#endif
+   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_drm_batchbuffer_reset(batch);
+
+   return &batch->base;
+}
+
+static int
+i915_drm_batchbuffer_reloc(struct i915_winsys_batchbuffer *ibatch,
+                            struct i915_winsys_buffer *buffer,
+                            enum i915_winsys_buffer_usage usage,
+                            unsigned pre_add)
+{
+   struct i915_drm_batchbuffer *batch = i915_drm_batchbuffer(ibatch);
+   unsigned write_domain = 0;
+   unsigned read_domain = 0;
+   unsigned offset;
+   int ret = 0;
+
+   assert(batch->base.relocs < batch->base.max_relocs);
+
+   if (usage == I915_USAGE_SAMPLER) {
+      write_domain = 0;
+      read_domain = I915_GEM_DOMAIN_SAMPLER;
+
+   } else if (usage == I915_USAGE_RENDER) {
+      write_domain = I915_GEM_DOMAIN_RENDER;
+      read_domain = I915_GEM_DOMAIN_RENDER;
+
+   } else if (usage == I915_USAGE_2D_TARGET) {
+      write_domain = I915_GEM_DOMAIN_RENDER;
+      read_domain = I915_GEM_DOMAIN_RENDER;
+
+   } else if (usage == I915_USAGE_2D_SOURCE) {
+      write_domain = 0;
+      read_domain = I915_GEM_DOMAIN_RENDER;
+
+   } else if (usage == I915_USAGE_VERTEX) {
+      write_domain = 0;
+      read_domain = I915_GEM_DOMAIN_VERTEX;
+
+   } else {
+      assert(0);
+      return -1;
+   }
+
+   offset = (unsigned)(batch->base.ptr - batch->base.map);
+
+   ret = drm_intel_bo_emit_reloc(batch->bo, offset,
+                                 intel_bo(buffer), pre_add,
+                                 read_domain,
+                                 write_domain);
+
+   ((uint32_t*)batch->base.ptr)[0] = intel_bo(buffer)->offset + pre_add;
+   batch->base.ptr += 4;
+
+   if (!ret)
+      batch->base.relocs++;
+
+   return ret;
+}
+
+static void
+i915_drm_batchbuffer_flush(struct i915_winsys_batchbuffer *ibatch,
+                            struct pipe_fence_handle **fence)
+{
+   struct i915_drm_batchbuffer *batch = i915_drm_batchbuffer(ibatch);
+   unsigned used = 0;
+   int ret = 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);
+
+#ifdef INTEL_MAP_BATCHBUFFER
+#ifdef INTEL_MAP_GTT
+   drm_intel_gem_bo_unmap_gtt(batch->bo);
+#else
+   drm_intel_bo_unmap(batch->bo);
+#endif
+#else
+   drm_intel_bo_subdata(batch->bo, 0, used, batch->base.map);
+#endif
+
+   /* Do the sending to HW */
+   ret = drm_intel_bo_exec(batch->bo, used, NULL, 0, 0);
+   assert(ret == 0);
+
+   if (i915_drm_winsys(ibatch->iws)->dump_cmd) {
+      unsigned *ptr;
+      drm_intel_bo_map(batch->bo, FALSE);
+      ptr = (unsigned*)batch->bo->virtual;
+
+      debug_printf("%s:\n", __func__);
+      for (i = 0; i < used / 4; i++, ptr++) {
+         debug_printf("\t%08x:    %08x\n", i*4, *ptr);
+      }
+
+      drm_intel_bo_unmap(batch->bo);
+   } else {
+#ifdef INTEL_RUN_SYNC
+      drm_intel_bo_map(batch->bo, FALSE);
+      drm_intel_bo_unmap(batch->bo);
+#endif
+   }
+
+   if (fence) {
+      ibatch->iws->fence_reference(ibatch->iws, fence, NULL);
+
+#ifdef INTEL_RUN_SYNC
+      /* we run synced to GPU so just pass null */
+      (*fence) = i915_drm_fence_create(NULL);
+#else
+      (*fence) = i915_drm_fence_create(batch->bo);
+#endif
+   }
+
+   i915_drm_batchbuffer_reset(batch);
+}
+
+static void
+i915_drm_batchbuffer_destroy(struct i915_winsys_batchbuffer *ibatch)
+{
+   struct i915_drm_batchbuffer *batch = i915_drm_batchbuffer(ibatch);
+
+   if (batch->bo)
+      drm_intel_bo_unreference(batch->bo);
+
+#ifndef INTEL_MAP_BATCHBUFFER
+   FREE(batch->base.map);
+#endif
+   FREE(batch);
+}
+
+void i915_drm_winsys_init_batchbuffer_functions(struct i915_drm_winsys *idws)
+{
+   idws->base.batchbuffer_create = i915_drm_batchbuffer_create;
+   idws->base.batchbuffer_reloc = i915_drm_batchbuffer_reloc;
+   idws->base.batchbuffer_flush = i915_drm_batchbuffer_flush;
+   idws->base.batchbuffer_destroy = i915_drm_batchbuffer_destroy;
+}
diff --git a/src/gallium/winsys/i915/drm/i915_drm_buffer.c b/src/gallium/winsys/i915/drm/i915_drm_buffer.c
new file mode 100644
index 00000000000..3bd85026b21
--- /dev/null
+++ b/src/gallium/winsys/i915/drm/i915_drm_buffer.c
@@ -0,0 +1,217 @@
+
+#include "state_tracker/drm_api.h"
+#include "i915_drm_winsys.h"
+#include "util/u_memory.h"
+
+#include "i915_drm.h"
+
+static struct i915_winsys_buffer *
+i915_drm_buffer_create(struct i915_winsys *iws,
+                        unsigned size, unsigned alignment,
+                        enum i915_winsys_buffer_type type)
+{
+   struct i915_drm_buffer *buf = CALLOC_STRUCT(i915_drm_buffer);
+   struct i915_drm_winsys *idws = i915_drm_winsys(iws);
+   drm_intel_bufmgr *pool;
+   char *name;
+
+   if (!buf)
+      return NULL;
+
+   buf->magic = 0xDEAD1337;
+   buf->flinked = FALSE;
+   buf->flink = 0;
+   buf->map_gtt = FALSE;
+
+   if (type == I915_NEW_TEXTURE) {
+      name = "gallium3d_texture";
+      pool = idws->pools.gem;
+   } else if (type == I915_NEW_VERTEX) {
+      name = "gallium3d_vertex";
+      pool = idws->pools.gem;
+      buf->map_gtt = TRUE;
+   } else if (type == I915_NEW_SCANOUT) {
+      name = "gallium3d_scanout";
+      pool = idws->pools.gem;
+      buf->map_gtt = TRUE;
+   } else {
+      assert(0);
+      name = "gallium3d_unknown";
+      pool = idws->pools.gem;
+   }
+
+   buf->bo = drm_intel_bo_alloc(pool, name, size, alignment);
+
+   if (!buf->bo)
+      goto err;
+
+   return (struct i915_winsys_buffer *)buf;
+
+err:
+   assert(0);
+   FREE(buf);
+   return NULL;
+}
+
+static struct i915_winsys_buffer *
+i915_drm_buffer_from_handle(struct i915_winsys *iws,
+                             struct winsys_handle *whandle,
+                             unsigned *stride)
+{
+   struct i915_drm_winsys *idws = i915_drm_winsys(iws);
+   struct i915_drm_buffer *buf = CALLOC_STRUCT(i915_drm_buffer);
+   uint32_t tile = 0, swizzle = 0;
+
+   if (!buf)
+      return NULL;
+
+   buf->magic = 0xDEAD1337;
+   buf->bo = drm_intel_bo_gem_create_from_name(idws->pools.gem, "gallium3d_from_handle", whandle->handle);
+   buf->flinked = TRUE;
+   buf->flink = whandle->handle;
+
+   if (!buf->bo)
+      goto err;
+
+   drm_intel_bo_get_tiling(buf->bo, &tile, &swizzle);
+   if (tile != I915_TILE_NONE)
+      buf->map_gtt = TRUE;
+
+   *stride = whandle->stride;
+
+   return (struct i915_winsys_buffer *)buf;
+
+err:
+   FREE(buf);
+   return NULL;
+}
+
+static boolean
+i915_drm_buffer_get_handle(struct i915_winsys *iws,
+                            struct i915_winsys_buffer *buffer,
+                            struct winsys_handle *whandle,
+                            unsigned stride)
+{
+   struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
+
+   if (whandle->type == DRM_API_HANDLE_TYPE_SHARED) {
+      if (!buf->flinked) {
+         if (drm_intel_bo_flink(buf->bo, &buf->flink))
+            return FALSE;
+         buf->flinked = TRUE;
+      }
+
+      whandle->handle = buf->flink;
+   } else if (whandle->type == DRM_API_HANDLE_TYPE_KMS) {
+      whandle->handle = buf->bo->handle;
+   } else {
+      assert(!"unknown usage");
+      return FALSE;
+   }
+
+   whandle->stride = stride;
+   return TRUE;
+}
+
+static int
+i915_drm_buffer_set_fence_reg(struct i915_winsys *iws,
+                               struct i915_winsys_buffer *buffer,
+                               unsigned stride,
+                               enum i915_winsys_buffer_tile tile)
+{
+   struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
+   assert(I915_TILING_NONE == I915_TILE_NONE);
+   assert(I915_TILING_X == I915_TILE_X);
+   assert(I915_TILING_Y == I915_TILE_Y);
+
+   if (tile != I915_TILE_NONE) {
+      assert(buf->map_count == 0);
+      buf->map_gtt = TRUE;
+   }
+
+   return drm_intel_bo_set_tiling(buf->bo, &tile, stride);
+}
+
+static void *
+i915_drm_buffer_map(struct i915_winsys *iws,
+                     struct i915_winsys_buffer *buffer,
+                     boolean write)
+{
+   struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
+   drm_intel_bo *bo = intel_bo(buffer);
+   int ret = 0;
+
+   assert(bo);
+
+   if (buf->map_count)
+      goto out;
+
+   if (buf->map_gtt)
+      ret = drm_intel_gem_bo_map_gtt(bo);
+   else
+      ret = drm_intel_bo_map(bo, write);
+
+   buf->ptr = bo->virtual;
+
+   assert(ret == 0);
+out:
+   if (ret)
+      return NULL;
+
+   buf->map_count++;
+   return buf->ptr;
+}
+
+static void
+i915_drm_buffer_unmap(struct i915_winsys *iws,
+                       struct i915_winsys_buffer *buffer)
+{
+   struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
+
+   if (--buf->map_count)
+      return;
+
+   if (buf->map_gtt)
+      drm_intel_gem_bo_unmap_gtt(intel_bo(buffer));
+   else
+      drm_intel_bo_unmap(intel_bo(buffer));
+}
+
+static int
+i915_drm_buffer_write(struct i915_winsys *iws,
+                       struct i915_winsys_buffer *buffer,
+                       size_t offset,
+                       size_t size,
+                       const void *data)
+{
+   struct i915_drm_buffer *buf = i915_drm_buffer(buffer);
+
+   return drm_intel_bo_subdata(buf->bo, offset, size, (void*)data);
+}
+
+static void
+i915_drm_buffer_destroy(struct i915_winsys *iws,
+                         struct i915_winsys_buffer *buffer)
+{
+   drm_intel_bo_unreference(intel_bo(buffer));
+
+#ifdef DEBUG
+   i915_drm_buffer(buffer)->magic = 0;
+   i915_drm_buffer(buffer)->bo = NULL;
+#endif
+
+   FREE(buffer);
+}
+
+void
+i915_drm_winsys_init_buffer_functions(struct i915_drm_winsys *idws)
+{
+   idws->base.buffer_create = i915_drm_buffer_create;
+   idws->base.buffer_from_handle = i915_drm_buffer_from_handle;
+   idws->base.buffer_get_handle = i915_drm_buffer_get_handle;
+   idws->base.buffer_set_fence_reg = i915_drm_buffer_set_fence_reg;
+   idws->base.buffer_map = i915_drm_buffer_map;
+   idws->base.buffer_unmap = i915_drm_buffer_unmap;
+   idws->base.buffer_write = i915_drm_buffer_write;
+   idws->base.buffer_destroy = i915_drm_buffer_destroy;
+}
diff --git a/src/gallium/winsys/i915/drm/i915_drm_fence.c b/src/gallium/winsys/i915/drm/i915_drm_fence.c
new file mode 100644
index 00000000000..30ebf4835ea
--- /dev/null
+++ b/src/gallium/winsys/i915/drm/i915_drm_fence.c
@@ -0,0 +1,83 @@
+
+#include "i915_drm_winsys.h"
+#include "util/u_memory.h"
+#include "util/u_atomic.h"
+#include "util/u_inlines.h"
+
+/**
+ * Because gem does not have fence's we have to create our own fences.
+ *
+ * They work by keeping the batchbuffer around and checking if that has
+ * been idled. If bo is NULL fence has expired.
+ */
+struct i915_drm_fence
+{
+   struct pipe_reference reference;
+   drm_intel_bo *bo;
+};
+
+
+struct pipe_fence_handle *
+i915_drm_fence_create(drm_intel_bo *bo)
+{
+   struct i915_drm_fence *fence = CALLOC_STRUCT(i915_drm_fence);
+
+   pipe_reference_init(&fence->reference, 1);
+   /* bo is null if fence already expired */
+   if (bo) {
+      drm_intel_bo_reference(bo);
+      fence->bo = bo;
+   }
+
+   return (struct pipe_fence_handle *)fence;
+}
+
+static void
+i915_drm_fence_reference(struct i915_winsys *iws,
+                          struct pipe_fence_handle **ptr,
+                          struct pipe_fence_handle *fence)
+{
+   struct i915_drm_fence *old = (struct i915_drm_fence *)*ptr;
+   struct i915_drm_fence *f = (struct i915_drm_fence *)fence;
+
+   if (pipe_reference(&((struct i915_drm_fence *)(*ptr))->reference, &f->reference)) {
+      if (old->bo)
+         drm_intel_bo_unreference(old->bo);
+      FREE(old);
+   }
+   *ptr = fence;
+}
+
+static int
+i915_drm_fence_signalled(struct i915_winsys *iws,
+                          struct pipe_fence_handle *fence)
+{
+   assert(0);
+
+   return 0;
+}
+
+static int
+i915_drm_fence_finish(struct i915_winsys *iws,
+                       struct pipe_fence_handle *fence)
+{
+   struct i915_drm_fence *f = (struct i915_drm_fence *)fence;
+
+   /* fence already expired */
+   if (!f->bo)
+      return 0;
+
+   drm_intel_bo_wait_rendering(f->bo);
+   drm_intel_bo_unreference(f->bo);
+   f->bo = NULL;
+
+   return 0;
+}
+
+void
+i915_drm_winsys_init_fence_functions(struct i915_drm_winsys *idws)
+{
+   idws->base.fence_reference = i915_drm_fence_reference;
+   idws->base.fence_signalled = i915_drm_fence_signalled;
+   idws->base.fence_finish = i915_drm_fence_finish;
+}
diff --git a/src/gallium/winsys/i915/drm/i915_drm_winsys.h b/src/gallium/winsys/i915/drm/i915_drm_winsys.h
new file mode 100644
index 00000000000..217c4a7eafb
--- /dev/null
+++ b/src/gallium/winsys/i915/drm/i915_drm_winsys.h
@@ -0,0 +1,77 @@
+
+#ifndef INTEL_DRM_WINSYS_H
+#define INTEL_DRM_WINSYS_H
+
+#include "i915/i915_batchbuffer.h"
+
+#include "drm.h"
+#include "intel_bufmgr.h"
+
+
+/*
+ * Winsys
+ */
+
+
+struct i915_drm_winsys
+{
+   struct i915_winsys base;
+
+   boolean dump_cmd;
+
+   int fd; /**< Drm file discriptor */
+
+   unsigned id;
+
+   size_t max_batch_size;
+
+   struct {
+      drm_intel_bufmgr *gem;
+   } pools;
+};
+
+static INLINE struct i915_drm_winsys *
+i915_drm_winsys(struct i915_winsys *iws)
+{
+   return (struct i915_drm_winsys *)iws;
+}
+
+struct i915_drm_winsys * i915_drm_winsys_create(int fd, unsigned pci_id);
+struct pipe_fence_handle * i915_drm_fence_create(drm_intel_bo *bo);
+
+void i915_drm_winsys_init_batchbuffer_functions(struct i915_drm_winsys *idws);
+void i915_drm_winsys_init_buffer_functions(struct i915_drm_winsys *idws);
+void i915_drm_winsys_init_fence_functions(struct i915_drm_winsys *idws);
+
+
+/*
+ * Buffer
+ */
+
+
+struct i915_drm_buffer {
+   unsigned magic;
+
+   drm_intel_bo *bo;
+
+   void *ptr;
+   unsigned map_count;
+   boolean map_gtt;
+
+   boolean flinked;
+   unsigned flink;
+};
+
+static INLINE struct i915_drm_buffer *
+i915_drm_buffer(struct i915_winsys_buffer *buffer)
+{
+   return (struct i915_drm_buffer *)buffer;
+}
+
+static INLINE drm_intel_bo *
+intel_bo(struct i915_winsys_buffer *buffer)
+{
+   return i915_drm_buffer(buffer)->bo;
+}
+
+#endif