From 935e4c56e5b10a0a702d95f78e9f4e6660c452dc Mon Sep 17 00:00:00 2001
From: Jakob Bornecrantz <wallbraker@gmail.com>
Date: Tue, 1 Sep 2009 00:42:39 +0100
Subject: i915g: Implement new winsys

---
 src/gallium/winsys/drm/intel/gem/intel_drm_api.c | 202 +++++++++++++++++++++++
 1 file changed, 202 insertions(+)
 create mode 100644 src/gallium/winsys/drm/intel/gem/intel_drm_api.c

(limited to 'src/gallium/winsys/drm/intel/gem/intel_drm_api.c')

diff --git a/src/gallium/winsys/drm/intel/gem/intel_drm_api.c b/src/gallium/winsys/drm/intel/gem/intel_drm_api.c
new file mode 100644
index 0000000000..4c5a1d2ea8
--- /dev/null
+++ b/src/gallium/winsys/drm/intel/gem/intel_drm_api.c
@@ -0,0 +1,202 @@
+
+#include "state_tracker/drm_api.h"
+
+#include "intel_drm_winsys.h"
+#include "util/u_memory.h"
+
+#include "i915simple/i915_context.h"
+#include "i915simple/i915_screen.h"
+
+
+/*
+ * Helper functions
+ */
+
+
+static void
+intel_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);
+   sscanf(path, "%x", device_id);
+   fclose(file);
+}
+
+static struct intel_buffer *
+intel_drm_buffer_from_handle(struct intel_drm_winsys *idws,
+                             const char* name, unsigned handle)
+{
+   struct intel_drm_buffer *buf = CALLOC_STRUCT(intel_drm_buffer);
+
+   if (!buf)
+      return NULL;
+
+   buf->magic = 0xDEAD1337;
+   buf->bo = drm_intel_bo_gem_create_from_name(idws->pools.gem, name, handle);
+   buf->flinked = TRUE;
+   buf->flink = handle;
+
+   if (!buf->bo)
+      goto err;
+
+   return (struct intel_buffer *)buf;
+
+err:
+   FREE(buf);
+   return NULL;
+}
+
+
+/*
+ * Exported functions
+ */
+
+
+static struct pipe_texture *
+intel_drm_texture_from_shared_handle(struct drm_api *api,
+                                     struct pipe_screen *screen,
+                                     struct pipe_texture *templ,
+                                     const char* name,
+                                     unsigned pitch,
+                                     unsigned handle)
+{
+   struct intel_drm_winsys *idws = intel_drm_winsys(i915_screen(screen)->iws);
+   struct intel_buffer *buffer;
+
+   buffer = intel_drm_buffer_from_handle(idws, name, handle);
+   if (!buffer)
+      return NULL;
+
+   return i915_texture_blanket_intel(screen, templ, pitch, buffer);
+}
+
+static boolean
+intel_drm_shared_handle_from_texture(struct drm_api *api,
+                                     struct pipe_screen *screen,
+                                     struct pipe_texture *texture,
+                                     unsigned *pitch,
+                                     unsigned *handle)
+{
+   struct intel_drm_buffer *buf = NULL;
+   struct intel_buffer *buffer = NULL;
+   if (!i915_get_texture_buffer_intel(texture, &buffer, pitch))
+      return FALSE;
+
+   buf = intel_drm_buffer(buffer);
+   if (!buf->flinked) {
+      if (drm_intel_bo_flink(buf->bo, &buf->flink))
+         return FALSE;
+      buf->flinked = TRUE;
+   }
+
+   *handle = buf->flink;
+
+   return TRUE;
+}
+
+static boolean
+intel_drm_local_handle_from_texture(struct drm_api *api,
+                                    struct pipe_screen *screen,
+                                    struct pipe_texture *texture,
+                                    unsigned *pitch,
+                                    unsigned *handle)
+{
+   struct intel_buffer *buffer = NULL;
+   if (!i915_get_texture_buffer_intel(texture, &buffer, pitch))
+      return FALSE;
+
+   *handle = intel_drm_buffer(buffer)->bo->handle;
+
+   return TRUE;
+}
+
+static void
+intel_drm_winsys_destroy(struct intel_winsys *iws)
+{
+   struct intel_drm_winsys *idws = intel_drm_winsys(iws);
+
+   drm_intel_bufmgr_destroy(idws->pools.gem);
+
+   FREE(idws);
+}
+
+static struct pipe_screen *
+intel_drm_create_screen(struct drm_api *api, int drmFD,
+                        struct drm_create_screen_arg *arg)
+{
+   struct intel_drm_winsys *idws;
+   unsigned int deviceID;
+
+   if (arg != NULL) {
+      switch(arg->mode) {
+      case DRM_CREATE_NORMAL:
+         break;
+      default:
+         return NULL;
+      }
+   }
+
+   idws = CALLOC_STRUCT(intel_drm_winsys);
+   if (!idws)
+      return NULL;
+
+   intel_drm_get_device_id(&deviceID);
+
+   intel_drm_winsys_init_batchbuffer_functions(idws);
+   intel_drm_winsys_init_buffer_functions(idws);
+   intel_drm_winsys_init_fence_functions(idws);
+
+   idws->fd = drmFD;
+   idws->id = deviceID;
+   idws->max_batch_size = 16 * 4096;
+
+   idws->base.destroy = intel_drm_winsys_destroy;
+
+   idws->pools.gem = drm_intel_bufmgr_gem_init(idws->fd, idws->max_batch_size);
+
+   idws->softpipe = FALSE;
+   idws->dump_cmd = debug_get_bool_option("INTEL_DUMP_CMD", FALSE);
+
+   return i915_create_screen(&idws->base, deviceID);
+}
+
+static struct pipe_context *
+intel_drm_create_context(struct drm_api *api, struct pipe_screen *screen)
+{
+   return i915_create_context(screen);
+}
+
+static void
+destroy(struct drm_api *api)
+{
+
+}
+
+struct drm_api intel_drm_api =
+{
+   .create_context = intel_drm_create_context,
+   .create_screen = intel_drm_create_screen,
+   .texture_from_shared_handle = intel_drm_texture_from_shared_handle,
+   .shared_handle_from_texture = intel_drm_shared_handle_from_texture,
+   .local_handle_from_texture = intel_drm_local_handle_from_texture,
+   .destroy = destroy,
+};
+
+struct drm_api *
+drm_api_create()
+{
+   return &intel_drm_api;
+}
-- 
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