gallium: Reorg winsys directories

Attached output from commit.
 delete mode 100644 src/gallium/winsys/drm/SConscript
 delete mode 100644 src/gallium/winsys/drm/i965/SConscript
 delete mode 100644 src/gallium/winsys/drm/intel/Makefile
 delete mode 100644 src/gallium/winsys/drm/intel/SConscript
 delete mode 100644 src/gallium/winsys/drm/nouveau/Makefile
 delete mode 100644 src/gallium/winsys/drm/radeon/Makefile
 delete mode 100644 src/gallium/winsys/drm/radeon/SConscript
 delete mode 100644 src/gallium/winsys/drm/vmware/Makefile
 delete mode 100644 src/gallium/winsys/drm/vmware/SConscript
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/Makefile (82%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/SConscript (100%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/intel_drm_api.c (100%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/intel_drm_batchbuffer.c (100%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/intel_drm_buffer.c (100%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/intel_drm_fence.c (100%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/intel_drm_winsys.h (100%)
 rename src/gallium/winsys/{drm/i965/gem => i965/drm}/Makefile (78%)
 rename src/gallium/winsys/{drm/i965/gem => i965/drm}/SConscript (100%)
 rename src/gallium/winsys/{drm/i965/gem => i965/drm}/i965_drm_api.c (98%)
 rename src/gallium/winsys/{drm/i965/gem => i965/drm}/i965_drm_buffer.c (100%)
 rename src/gallium/winsys/{drm/i965/gem => i965/drm}/i965_drm_winsys.h (100%)
 rename src/gallium/winsys/{drm => }/i965/xlib/Makefile (97%)
 rename src/gallium/winsys/{drm => }/i965/xlib/xlib_i965.c (100%)
 rename src/gallium/winsys/{drm => }/nouveau/drm/Makefile (79%)
 rename src/gallium/winsys/{drm => }/nouveau/drm/nouveau_dri.h (100%)
 rename src/gallium/winsys/{drm => }/nouveau/drm/nouveau_drm_api.c (100%)
 rename src/gallium/winsys/{drm => }/nouveau/drm/nouveau_drm_api.h (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/Makefile (79%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/SConscript (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_buffer.h (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_drm.c (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_drm.h (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_drm_buffer.c (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_r300.c (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_r300.h (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_winsys.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/Makefile (63%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/SConscript (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_buffer.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_buffer.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_context.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_context.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_fence.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_fence.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen_dri.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen_ioctl.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen_pools.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen_svga.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_surface.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_surface.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmwgfx_drm.h (100%)
 rename src/gallium/winsys/{drm/i965 => sw}/Makefile (61%)
 copy src/gallium/winsys/{drm/sw => sw/drm}/Makefile (73%)
 rename src/gallium/winsys/{drm/sw => sw/drm}/sw_drm_api.c (98%)
 rename src/gallium/winsys/{drm/sw => sw/drm}/sw_drm_api.h (100%)
 rename src/gallium/winsys/{ => sw}/gdi/SConscript (100%)
 rename src/gallium/winsys/{ => sw}/gdi/gdi_sw_winsys.c (100%)
 rename src/gallium/winsys/{ => sw}/gdi/gdi_sw_winsys.h (100%)
 rename src/gallium/winsys/{ => sw}/null/Makefile (78%)
 rename src/gallium/winsys/{ => sw}/null/SConscript (100%)
 rename src/gallium/winsys/{ => sw}/null/null_sw_winsys.c (100%)
 rename src/gallium/winsys/{ => sw}/null/null_sw_winsys.h (100%)
 rename src/gallium/winsys/{drm/sw => sw/wrapper}/Makefile (65%)
 rename src/gallium/winsys/{drm/sw => sw/wrapper}/wrapper_sw_winsys.c (100%)
 rename src/gallium/winsys/{drm/sw => sw/wrapper}/wrapper_sw_winsys.h (100%)
 rename src/gallium/winsys/{ => sw}/xlib/Makefile (79%)
 rename src/gallium/winsys/{ => sw}/xlib/SConscript (100%)
 rename src/gallium/winsys/{ => sw}/xlib/xlib_sw_winsys.c (100%)

5 files changed, 718 insertions, 0 deletions

diff --git a/src/gallium/winsys/i965/drm/Makefile b/src/gallium/winsys/i965/drm/Makefile
new file mode 100644
index 0000000000..bbb71e25d8
--- /dev/null
+++ b/src/gallium/winsys/i965/drm/Makefile
@@ -0,0 +1,14 @@
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = i965drm
+
+C_SOURCES = \
+	i965_drm_buffer.c \
+	i965_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/i965/drm/SConscript b/src/gallium/winsys/i965/drm/SConscript
new file mode 100644
index 0000000000..6256ec6eaf
--- /dev/null
+++ b/src/gallium/winsys/i965/drm/SConscript
@@ -0,0 +1,15 @@
+Import('*')
+
+env = drienv.Clone()
+
+i965drm_sources = [
+    'i965_drm_api.c',
+    'i965_drm_buffer.c',
+]
+
+i965drm = env.ConvenienceLibrary(
+    target ='i965drm',
+    source = i965drm_sources,
+)
+
+Export('i965drm')
diff --git a/src/gallium/winsys/i965/drm/i965_drm_api.c b/src/gallium/winsys/i965/drm/i965_drm_api.c
new file mode 100644
index 0000000000..9072a18638
--- /dev/null
+++ b/src/gallium/winsys/i965/drm/i965_drm_api.c
@@ -0,0 +1,122 @@
+
+#include <stdio.h>
+#include "state_tracker/drm_api.h"
+
+#include "i965_drm_winsys.h"
+#include "util/u_memory.h"
+
+#include "i965/brw_context.h"        /* XXX: shouldn't be doing this */
+#include "i965/brw_screen.h"         /* XXX: shouldn't be doing this */
+
+#include "trace/tr_drm.h"
+
+#include "../../sw/drm/sw_drm_api.h"
+
+/*
+ * Helper functions
+ */
+
+
+static void
+i965_libdrm_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);
+   sscanf(path, "%x", device_id);
+   fclose(file);
+}
+
+static void
+i965_libdrm_winsys_destroy(struct brw_winsys_screen *iws)
+{
+   struct i965_libdrm_winsys *idws = i965_libdrm_winsys(iws);
+
+   if (BRW_DUMP)
+      debug_printf("%s\n", __FUNCTION__);
+
+   drm_intel_bufmgr_destroy(idws->gem);
+
+   FREE(idws);
+}
+
+static struct pipe_screen *
+i965_libdrm_create_screen(struct drm_api *api, int drmFD,
+                          struct drm_create_screen_arg *arg)
+{
+   struct i965_libdrm_winsys *idws;
+   unsigned int deviceID;
+
+   debug_printf("%s\n", __FUNCTION__);
+
+   if (arg != NULL) {
+      switch(arg->mode) {
+      case DRM_CREATE_NORMAL:
+         break;
+      default:
+         return NULL;
+      }
+   }
+
+   idws = CALLOC_STRUCT(i965_libdrm_winsys);
+   if (!idws)
+      return NULL;
+
+   i965_libdrm_get_device_id(&deviceID);
+
+   i965_libdrm_winsys_init_buffer_functions(idws);
+
+   idws->fd = drmFD;
+   idws->id = deviceID;
+
+   idws->base.destroy = i965_libdrm_winsys_destroy;
+
+   idws->gem = drm_intel_bufmgr_gem_init(idws->fd, BRW_BATCH_SIZE);
+   drm_intel_bufmgr_gem_enable_reuse(idws->gem);
+
+   idws->send_cmd = !debug_get_bool_option("BRW_NO_HW", FALSE);
+
+   return brw_create_screen(&idws->base, deviceID);
+}
+
+
+static void
+destroy(struct drm_api *api)
+{
+   if (BRW_DUMP)
+      debug_printf("%s\n", __FUNCTION__);
+
+}
+
+struct drm_api i965_libdrm_api =
+{
+   .name = "i965",
+   .create_screen = i965_libdrm_create_screen,
+   .destroy = destroy,
+};
+
+struct drm_api *
+drm_api_create()
+{
+   struct drm_api *api = NULL;
+
+   if (api == NULL && debug_get_bool_option("BRW_SOFTPIPE", FALSE))
+      api = sw_drm_api_create(&i965_libdrm_api);
+
+   if (api == NULL)
+      api = &i965_libdrm_api;
+
+   return trace_drm_create(api);
+}
diff --git a/src/gallium/winsys/i965/drm/i965_drm_buffer.c b/src/gallium/winsys/i965/drm/i965_drm_buffer.c
new file mode 100644
index 0000000000..33a17496b2
--- /dev/null
+++ b/src/gallium/winsys/i965/drm/i965_drm_buffer.c
@@ -0,0 +1,503 @@
+
+#include "state_tracker/drm_api.h"
+#include "i965_drm_winsys.h"
+#include "util/u_memory.h"
+#include "util/u_inlines.h"
+
+#include "i915_drm.h"
+#include "intel_bufmgr.h"
+
+
+
+const char *names[BRW_BUFFER_TYPE_MAX] = {
+   "TEXTURE",
+   "SCANOUT",
+   "VERTEX",
+   "CURBE",
+   "QUERY",
+   "SHADER_CONSTANTS",
+   "WM_SCRATCH",
+   "BATCH",
+   "GENERAL_STATE",
+   "SURFACE_STATE",
+   "PIXEL",
+   "GENERIC",
+};
+
+const char *usages[BRW_USAGE_MAX] = {
+   "STATE",
+   "QUERY_RESULT",
+   "RENDER_TARGET",
+   "DEPTH_BUFFER",
+   "BLIT_SOURCE",
+   "BLIT_DEST",
+   "SAMPLER",
+   "VERTEX",
+   "SCRATCH"
+};
+
+
+const char *data_types[BRW_DATA_MAX] =
+{
+   "GS: CC_VP",
+   "GS: CC_UNIT",
+   "GS: WM_PROG",
+   "GS: SAMPLER_DEFAULT_COLOR",
+   "GS: SAMPLER",
+   "GS: WM_UNIT",
+   "GS: SF_PROG",
+   "GS: SF_VP",
+   "GS: SF_UNIT",
+   "GS: VS_UNIT",
+   "GS: VS_PROG",
+   "GS: GS_UNIT",
+   "GS: GS_PROG",
+   "GS: CLIP_VP",
+   "GS: CLIP_UNIT",
+   "GS: CLIP_PROG",
+   "SS: SURFACE",
+   "SS: SURF_BIND",
+   "CONSTANT DATA",
+   "BATCH DATA",
+   "(untyped)"
+};
+
+static enum pipe_error 
+i965_libdrm_bo_alloc(struct brw_winsys_screen *sws,
+                     enum brw_buffer_type type,
+                     unsigned size,
+                     unsigned alignment,
+                     struct brw_winsys_buffer **bo_out)
+{
+   struct i965_libdrm_winsys *idws = i965_libdrm_winsys(sws);
+   struct i965_libdrm_buffer *buf;
+
+   if (BRW_DUMP)
+      debug_printf("%s type %s sz %d align %d\n",
+		   __FUNCTION__, names[type], size, alignment );
+
+   buf = CALLOC_STRUCT(i965_libdrm_buffer);
+   if (!buf)
+      return PIPE_ERROR_OUT_OF_MEMORY;
+
+   switch (type) {
+   case BRW_BUFFER_TYPE_TEXTURE:
+/* case BRW_BUFFER_TYPE_SCANOUT:*/
+   case BRW_BUFFER_TYPE_VERTEX:
+   case BRW_BUFFER_TYPE_CURBE:
+   case BRW_BUFFER_TYPE_QUERY:
+   case BRW_BUFFER_TYPE_SHADER_CONSTANTS:
+   case BRW_BUFFER_TYPE_SHADER_SCRATCH:
+   case BRW_BUFFER_TYPE_BATCH:
+   case BRW_BUFFER_TYPE_GENERAL_STATE:
+   case BRW_BUFFER_TYPE_SURFACE_STATE:
+   case BRW_BUFFER_TYPE_PIXEL:
+   case BRW_BUFFER_TYPE_GENERIC:
+      break;
+   case BRW_BUFFER_TYPE_SCANOUT:
+      buf->map_gtt = TRUE;
+      break;
+   default:
+      assert(0);
+      break;
+   }
+
+   buf->bo = drm_intel_bo_alloc(idws->gem, 
+                                names[type], 
+                                size, 
+                                alignment);
+
+   if (!buf->bo)
+      goto err;
+
+   pipe_reference_init(&buf->base.reference, 1);
+   buf->base.size = size;
+   buf->base.sws = sws;
+
+   *bo_out = &buf->base;
+   return PIPE_OK;
+
+err:
+   assert(0);
+   FREE(buf);
+   return PIPE_ERROR_OUT_OF_MEMORY;
+}
+
+static enum pipe_error
+i965_libdrm_bo_from_handle(struct brw_winsys_screen *sws,
+                           struct winsys_handle *whandle,
+                           unsigned *stride,
+                           unsigned *tile,
+                           struct brw_winsys_buffer **bo_out)
+{
+   struct i965_libdrm_winsys *idws = i965_libdrm_winsys(sws);
+   struct i965_libdrm_buffer *buf = CALLOC_STRUCT(i965_libdrm_buffer);
+   uint32_t swizzle = 0;
+
+   if (BRW_DUMP)
+      debug_printf("%s\n", __FUNCTION__);
+
+   if (!buf)
+      return PIPE_ERROR_OUT_OF_MEMORY;
+
+   pipe_reference_init(&buf->base.reference, 1);
+   buf->bo = drm_intel_bo_gem_create_from_name(idws->gem, "FROM_HANDLE", whandle->handle);
+   buf->base.size = buf->bo->size;
+   buf->base.sws = &idws->base;
+   buf->flinked = TRUE;
+   buf->flink = whandle->handle;
+
+
+   if (!buf->bo)
+      goto err;
+
+   drm_intel_bo_get_tiling(buf->bo, &buf->tiling, &swizzle);
+   if (buf->tiling != 0)
+      buf->map_gtt = TRUE;
+
+   *tile = buf->tiling;
+   *stride = whandle->stride;
+
+   *bo_out = &buf->base;
+   return PIPE_OK;
+
+err:
+   FREE(buf);
+   return PIPE_ERROR_OUT_OF_MEMORY;
+}
+
+static enum pipe_error
+i965_libdrm_bo_get_handle(struct brw_winsys_buffer *buffer,
+                          struct winsys_handle *whandle,
+                          unsigned stride)
+{
+   struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
+
+   if (BRW_DUMP)
+      debug_printf("%s\n", __FUNCTION__);
+
+   if (whandle->type == DRM_API_HANDLE_TYPE_SHARED) {
+      if (!buf->flinked) {
+         if (drm_intel_bo_flink(buf->bo, &buf->flink))
+            return PIPE_ERROR_BAD_INPUT;
+         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 PIPE_ERROR_BAD_INPUT;
+   }
+
+   whandle->stride = stride;
+   return PIPE_OK;
+}
+
+static void 
+i965_libdrm_bo_destroy(struct brw_winsys_buffer *buffer)
+{
+   struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
+
+   if (BRW_DUMP)
+      debug_printf("%s\n", __FUNCTION__);
+
+   drm_intel_bo_unreference(buf->bo);
+   FREE(buffer);
+}
+
+static enum pipe_error
+i965_libdrm_bo_emit_reloc(struct brw_winsys_buffer *buffer,
+                          enum brw_buffer_usage usage,
+                          unsigned delta,
+                          unsigned offset,
+                          struct brw_winsys_buffer *buffer2)
+{
+   struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
+   struct i965_libdrm_buffer *buf2 = i965_libdrm_buffer(buffer2);
+   int read, write;
+   int ret;
+
+   if (BRW_DUMP)
+      debug_printf("%s buf %p offset %x delta %x buf2 %p/%s/%s\n",
+		   __FUNCTION__, (void *)buffer, 
+		   offset, delta,
+		   (void *)buffer2, names[buf2->data_type], usages[usage]);
+
+   switch (usage) {
+   case BRW_USAGE_STATE:
+      read = I915_GEM_DOMAIN_INSTRUCTION;
+      write = 0;
+      break;
+   case BRW_USAGE_QUERY_RESULT:
+      read = I915_GEM_DOMAIN_INSTRUCTION;
+      write = I915_GEM_DOMAIN_INSTRUCTION;
+      break;
+   case BRW_USAGE_RENDER_TARGET:
+      read = I915_GEM_DOMAIN_RENDER;
+      write = 0;
+      break;
+   case BRW_USAGE_DEPTH_BUFFER:
+      read = I915_GEM_DOMAIN_RENDER;
+      write = I915_GEM_DOMAIN_RENDER;
+      break;
+   case BRW_USAGE_BLIT_SOURCE:
+      read = 0;
+      write = I915_GEM_DOMAIN_RENDER;
+      break;
+   case BRW_USAGE_BLIT_DEST:
+      read = I915_GEM_DOMAIN_RENDER;
+      write = I915_GEM_DOMAIN_RENDER;
+      break;
+   case BRW_USAGE_SAMPLER:
+      read = I915_GEM_DOMAIN_SAMPLER;
+      write = 0;
+      break;
+   case BRW_USAGE_VERTEX:
+      read = I915_GEM_DOMAIN_VERTEX;
+      write = 0;
+      break;
+   case BRW_USAGE_SCRATCH:
+      read = 0;
+      write = 0;
+      break;
+   default:
+      assert(0);
+      return -1;
+   }
+
+   /* Needed??
+   ((uint32_t *)buf->bo->virtual)[offset/4] = (delta +
+					       buf2->bo->offset);
+    */
+
+   ret = dri_bo_emit_reloc( buf->bo, read, write, delta, offset, buf2->bo );
+   if (ret)
+      return -1;
+
+   return 0;
+}
+
+static enum pipe_error 
+i965_libdrm_bo_exec(struct brw_winsys_buffer *buffer,
+                    unsigned bytes_used)
+{
+   struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
+   struct i965_libdrm_winsys *idws = i965_libdrm_winsys(buffer->sws);
+   int ret;
+
+   if (BRW_DUMP)
+      debug_printf("execute buffer %p, bytes %d\n", (void *)buffer, bytes_used);
+
+   if (idws->send_cmd) {
+      ret = dri_bo_exec(buf->bo, bytes_used, NULL, 0, 0);
+      if (ret)
+         return PIPE_ERROR;
+   }
+
+   return PIPE_OK;
+}
+
+static enum pipe_error
+i965_libdrm_bo_subdata(struct brw_winsys_buffer *buffer,
+                       enum brw_buffer_data_type data_type,
+                       size_t offset,
+                       size_t size,
+                       const void *data,
+                       const struct brw_winsys_reloc *reloc,
+                       unsigned nr_reloc)
+{
+   struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
+   struct i965_libdrm_winsys *idws = i965_libdrm_winsys(buffer->sws);
+   int ret, i;
+
+   (void)data_type;
+
+   if (BRW_DUMP)
+      debug_printf("%s buf %p off %d sz %d %s relocs: %d\n", 
+		   __FUNCTION__, 
+		   (void *)buffer, offset, size, 
+		   data_types[data_type],
+		   nr_reloc);
+
+   if (BRW_DUMP)
+      brw_dump_data( idws->id,
+		     data_type,
+		     buf->bo->offset + offset, 
+		     data, size );
+
+   /* XXX: use bo_map_gtt/memcpy/unmap_gtt under some circumstances???
+    */
+   ret = drm_intel_bo_subdata(buf->bo, offset, size, (void*)data);
+   if (ret)
+      return PIPE_ERROR;
+  
+   for (i = 0; i < nr_reloc; i++) {
+      i965_libdrm_bo_emit_reloc(buffer, reloc[i].usage, reloc[i].delta,
+                                reloc[i].offset, reloc[i].bo);
+   }
+
+   return PIPE_OK;
+}
+
+static boolean 
+i965_libdrm_bo_is_busy(struct brw_winsys_buffer *buffer)
+{
+   struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
+   boolean ret;
+
+   if (BRW_DUMP)
+      debug_printf("%s %p\n", __FUNCTION__, (void *)buffer);
+
+   ret = drm_intel_bo_busy(buf->bo);
+
+   if (BRW_DUMP)
+      debug_printf("  --> %d\n", ret);
+
+   return ret;
+}
+
+static boolean 
+i965_libdrm_bo_references(struct brw_winsys_buffer *a,
+                          struct brw_winsys_buffer *b)
+{
+   struct i965_libdrm_buffer *bufa = i965_libdrm_buffer(a);
+   struct i965_libdrm_buffer *bufb = i965_libdrm_buffer(b);
+   boolean ret;
+
+   if (BRW_DUMP)
+      debug_printf("%s %p %p\n", __FUNCTION__, (void *)a, (void *)b);
+
+   ret = drm_intel_bo_references(bufa->bo, bufb->bo);
+
+   if (BRW_DUMP)
+      debug_printf("  --> %d\n", ret);
+
+   return ret;
+}
+
+/* XXX: couldn't this be handled by returning true/false on
+ * bo_emit_reloc?
+ */
+static enum pipe_error
+i965_libdrm_check_aperture_space(struct brw_winsys_screen *iws,
+                                 struct brw_winsys_buffer **buffers,
+                                 unsigned count)
+{
+   static drm_intel_bo *bos[128];
+   int i;
+   int ret;
+
+   if (BRW_DUMP)
+      debug_printf("%s\n", __FUNCTION__);
+
+   if (count > Elements(bos)) {
+      assert(0);
+      return FALSE;
+   }
+
+   for (i = 0; i < count; i++)
+      bos[i] = i965_libdrm_buffer(buffers[i])->bo;
+
+   /* XXX: converting from ??? to pipe_error:
+    */
+   ret = dri_bufmgr_check_aperture_space(bos, count);
+
+   if (BRW_DUMP)
+      debug_printf("  --> %d (ok == %d)\n", ret, PIPE_OK);
+
+   return ret;
+}
+
+static void *
+i965_libdrm_bo_map(struct brw_winsys_buffer *buffer,
+                   enum brw_buffer_data_type data_type,
+                   unsigned offset,
+                   unsigned length,
+                   boolean write,
+                   boolean discard,
+                   boolean flush_explicit)
+{
+   struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
+   int ret;
+
+
+   if (BRW_DUMP)
+      debug_printf("%s %p %s %s\n", __FUNCTION__, (void *)buffer, 
+		   write ? "read/write" : "read",
+		   write ? data_types[data_type] : "");
+
+   if (!buf->map_count) {
+      if (buf->map_gtt) {
+         ret = drm_intel_gem_bo_map_gtt(buf->bo);
+         if (ret)
+            return NULL;
+      }
+      else {
+         ret = drm_intel_bo_map(buf->bo, write);
+         if (ret)
+            return NULL;
+      }
+   }
+
+   buf->data_type = data_type;
+   buf->map_count++;
+   return buf->bo->virtual;
+}
+
+static void
+i965_libdrm_bo_flush_range(struct brw_winsys_buffer *buffer,
+                           unsigned offset,
+                           unsigned length)
+{
+   struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
+   struct i965_libdrm_winsys *idws = i965_libdrm_winsys(buffer->sws);
+
+   if (BRW_DUMP)
+      debug_printf("%s %s offset %d len %d\n", __FUNCTION__,
+		   data_types[buf->data_type],
+		   offset, length);
+
+   if (BRW_DUMP)
+      brw_dump_data( idws->id,
+		     buf->data_type,
+		     buf->bo->offset + offset, 
+		     buf->bo->virtual + offset, 
+		     length );
+}
+
+static void 
+i965_libdrm_bo_unmap(struct brw_winsys_buffer *buffer)
+{
+   struct i965_libdrm_buffer *buf = i965_libdrm_buffer(buffer);
+
+   if (BRW_DUMP)
+      debug_printf("%s\n", __FUNCTION__);
+
+   if (--buf->map_count > 0)
+      return;
+
+   if (buf->map_gtt)
+      drm_intel_gem_bo_unmap_gtt(buf->bo);
+   else
+      drm_intel_bo_unmap(buf->bo);
+}
+
+void
+i965_libdrm_winsys_init_buffer_functions(struct i965_libdrm_winsys *idws)
+{
+   idws->base.bo_alloc             = i965_libdrm_bo_alloc;
+   idws->base.bo_from_handle       = i965_libdrm_bo_from_handle;
+   idws->base.bo_get_handle        = i965_libdrm_bo_get_handle;
+   idws->base.bo_destroy           = i965_libdrm_bo_destroy;
+   idws->base.bo_emit_reloc        = i965_libdrm_bo_emit_reloc;
+   idws->base.bo_exec              = i965_libdrm_bo_exec;
+   idws->base.bo_subdata           = i965_libdrm_bo_subdata;
+   idws->base.bo_is_busy           = i965_libdrm_bo_is_busy;
+   idws->base.bo_references        = i965_libdrm_bo_references;
+   idws->base.check_aperture_space = i965_libdrm_check_aperture_space;
+   idws->base.bo_map               = i965_libdrm_bo_map;
+   idws->base.bo_flush_range       = i965_libdrm_bo_flush_range;
+   idws->base.bo_unmap             = i965_libdrm_bo_unmap;
+}
diff --git a/src/gallium/winsys/i965/drm/i965_drm_winsys.h b/src/gallium/winsys/i965/drm/i965_drm_winsys.h
new file mode 100644
index 0000000000..c6a7d4a8c5
--- /dev/null
+++ b/src/gallium/winsys/i965/drm/i965_drm_winsys.h
@@ -0,0 +1,64 @@
+
+#ifndef INTEL_DRM_WINSYS_H
+#define INTEL_DRM_WINSYS_H
+
+#include "i965/brw_winsys.h"
+
+#include "drm.h"
+#include "intel_bufmgr.h"
+
+
+
+/*
+ * Winsys
+ */
+
+
+struct i965_libdrm_winsys
+{
+   struct brw_winsys_screen base;
+   drm_intel_bufmgr *gem;
+
+   boolean send_cmd;
+
+   int fd; /**< Drm file discriptor */
+
+   unsigned id;
+};
+
+static INLINE struct i965_libdrm_winsys *
+i965_libdrm_winsys(struct brw_winsys_screen *iws)
+{
+   return (struct i965_libdrm_winsys *)iws;
+}
+
+struct i965_libdrm_winsys *i965_libdrm_winsys_create(int fd, unsigned pci_id);
+
+void i965_libdrm_winsys_init_buffer_functions(struct i965_libdrm_winsys *idws);
+
+
+/* Buffer.  
+ */
+struct i965_libdrm_buffer {
+   struct brw_winsys_buffer base;
+
+   drm_intel_bo *bo;
+
+   void *ptr;
+   unsigned map_count;
+   unsigned data_type;		/* valid while mapped */
+   unsigned tiling;
+
+   boolean map_gtt;
+   boolean flinked;
+   unsigned flink;
+};
+
+static INLINE struct i965_libdrm_buffer *
+i965_libdrm_buffer(struct brw_winsys_buffer *buffer)
+{
+   return (struct i965_libdrm_buffer *)buffer;
+}
+
+
+#endif