From 6152fbb1eb16e1bc3aff9c97ae480e2d50e85ad3 Mon Sep 17 00:00:00 2001
From: Inki Dae <inki.dae@samsung.com>
Date: Fri, 16 Mar 2012 18:47:06 +0900
Subject: [PATCH] --- yaml --- r: 293843 b: refs/heads/master c:
 f0b1bda725c1c49620d2e7ae7405a247098cdb8e h: refs/heads/master i:   293841:
 eea4bd8b79bebdeeaf7fb0075740740e5c5cead9   293839:
 b5373291e8a79d262dfe26b304901a15dc06417a v: v3

---
 [refs]                                        |  2 +-
 trunk/drivers/gpu/drm/exynos/exynos_drm_gem.c | 58 +++++++++++++++++++
 trunk/drivers/gpu/drm/exynos/exynos_drm_gem.h | 18 ++++++
 3 files changed, 77 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index d1f2bf249d22..3949012a6301 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2b35892e9da672df40ce890bffc4f9f6119c57e0
+refs/heads/master: f0b1bda725c1c49620d2e7ae7405a247098cdb8e
diff --git a/trunk/drivers/gpu/drm/exynos/exynos_drm_gem.c b/trunk/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 730093fed512..b5c6f3cfc698 100644
--- a/trunk/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/trunk/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -386,6 +386,64 @@ int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data,
 	return 0;
 }
 
+void *exynos_drm_gem_get_dma_addr(struct drm_device *dev,
+					unsigned int gem_handle,
+					struct drm_file *file_priv)
+{
+	struct exynos_drm_gem_obj *exynos_gem_obj;
+	struct drm_gem_object *obj;
+
+	obj = drm_gem_object_lookup(dev, file_priv, gem_handle);
+	if (!obj) {
+		DRM_ERROR("failed to lookup gem object.\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	exynos_gem_obj = to_exynos_gem_obj(obj);
+
+	if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) {
+		DRM_DEBUG_KMS("not support NONCONTIG type.\n");
+		drm_gem_object_unreference_unlocked(obj);
+
+		/* TODO */
+		return ERR_PTR(-EINVAL);
+	}
+
+	return &exynos_gem_obj->buffer->dma_addr;
+}
+
+void exynos_drm_gem_put_dma_addr(struct drm_device *dev,
+					unsigned int gem_handle,
+					struct drm_file *file_priv)
+{
+	struct exynos_drm_gem_obj *exynos_gem_obj;
+	struct drm_gem_object *obj;
+
+	obj = drm_gem_object_lookup(dev, file_priv, gem_handle);
+	if (!obj) {
+		DRM_ERROR("failed to lookup gem object.\n");
+		return;
+	}
+
+	exynos_gem_obj = to_exynos_gem_obj(obj);
+
+	if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) {
+		DRM_DEBUG_KMS("not support NONCONTIG type.\n");
+		drm_gem_object_unreference_unlocked(obj);
+
+		/* TODO */
+		return;
+	}
+
+	drm_gem_object_unreference_unlocked(obj);
+
+	/*
+	 * decrease obj->refcount one more time because we has already
+	 * increased it at exynos_drm_gem_get_dma_addr().
+	 */
+	drm_gem_object_unreference_unlocked(obj);
+}
+
 int exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data,
 				    struct drm_file *file_priv)
 {
diff --git a/trunk/drivers/gpu/drm/exynos/exynos_drm_gem.h b/trunk/drivers/gpu/drm/exynos/exynos_drm_gem.h
index 096267d5a715..e40fbad8b705 100644
--- a/trunk/drivers/gpu/drm/exynos/exynos_drm_gem.h
+++ b/trunk/drivers/gpu/drm/exynos/exynos_drm_gem.h
@@ -88,6 +88,24 @@ struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev,
 int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data,
 				struct drm_file *file_priv);
 
+/*
+ * get dma address from gem handle and this function could be used for
+ * other drivers such as 2d/3d acceleration drivers.
+ * with this function call, gem object reference count would be increased.
+ */
+void *exynos_drm_gem_get_dma_addr(struct drm_device *dev,
+					unsigned int gem_handle,
+					struct drm_file *file_priv);
+
+/*
+ * put dma address from gem handle and this function could be used for
+ * other drivers such as 2d/3d acceleration drivers.
+ * with this function call, gem object reference count would be decreased.
+ */
+void exynos_drm_gem_put_dma_addr(struct drm_device *dev,
+					unsigned int gem_handle,
+					struct drm_file *file_priv);
+
 /* get buffer offset to map to user space. */
 int exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data,
 				    struct drm_file *file_priv);