From: Jesse Barnes <jbarnes@hobbes.virtuousgeek.org>
Date: Wed, 11 Apr 2007 19:51:52 +0000 (-0700)
Subject: Add new buffer object type for kernel allocations that don't initially have a user... 
X-Git-Tag: submit/1.0/20121108.012404~1114
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3c384a9ad5f964709a237cfe035ea5d6df2da5fa;p=profile%2Fivi%2Flibdrm.git

Add new buffer object type for kernel allocations that don't initially have a user mapping.
(cherry picked from commit 2e21779992bd5026d8ec4dea52466377dbe5a0ed)
---

diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c
index 450e448..9501ba6 100644
--- a/linux-core/drm_bo.c
+++ b/linux-core/drm_bo.c
@@ -89,6 +89,9 @@ static int drm_bo_vm_pre_move(drm_buffer_object_t * bo, int old_is_pci)
 #ifdef DRM_ODD_MM_COMPAT
 	int ret;
 
+	if (!bo->map_list.map)
+		return 0;
+
 	ret = drm_bo_lock_kmm(bo);
 	if (ret)
 		return ret;
@@ -96,6 +99,9 @@ static int drm_bo_vm_pre_move(drm_buffer_object_t * bo, int old_is_pci)
 	if (old_is_pci)
 		drm_bo_finish_unmap(bo);
 #else
+	if (!bo->map_list.map)
+		return 0;
+
 	drm_bo_unmap_virtual(bo);
 #endif
 	return 0;
@@ -106,6 +112,9 @@ static void drm_bo_vm_post_move(drm_buffer_object_t * bo)
 #ifdef DRM_ODD_MM_COMPAT
 	int ret;
 
+	if (!bo->map_list.map)
+		return;
+
 	ret = drm_bo_remap_bound(bo);
 	if (ret) {
 		DRM_ERROR("Failed to remap a bound buffer object.\n"
@@ -131,6 +140,11 @@ static int drm_bo_add_ttm(drm_buffer_object_t * bo)
 		if (!bo->ttm)
 			ret = -ENOMEM;
 		break;
+	case drm_bo_type_kernel:
+		bo->ttm = drm_ttm_init(dev, bo->mem.num_pages << PAGE_SHIFT);
+		if (!bo->ttm)
+			ret = -ENOMEM;
+		break;
 	case drm_bo_type_user:
 	case drm_bo_type_fake:
 		break;
diff --git a/shared-core/drm.h b/shared-core/drm.h
index 3c59cd4..9ddb480 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -795,6 +795,7 @@ typedef struct drm_fence_arg {
 
 typedef enum {
 	drm_bo_type_dc,
+	drm_bo_type_kernel, /* for initial kernel allocations */
 	drm_bo_type_user,
 	drm_bo_type_fake
 }drm_bo_type_t;