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Subject[PATCH 19/29] gma500: Move our other GEM helper into the bits want to push into GEM
Date
From: Alan Cox <alan@linux.intel.com>

Signed-off-by: Alan Cox <alan@linux.intel.com>
---
drivers/staging/gma500/gem_glue.c | 54 ++++++++++++++++++++++++++++++++++++
drivers/staging/gma500/gem_glue.h | 2 +
drivers/staging/gma500/psb_gem.c | 56 +------------------------------------
3 files changed, 56 insertions(+), 56 deletions(-)
diff --git a/drivers/staging/gma500/gem_glue.c b/drivers/staging/gma500/gem_glue.c
index 0817497..0e7364b 100644
--- a/drivers/staging/gma500/gem_glue.c
+++ b/drivers/staging/gma500/gem_glue.c
@@ -45,3 +45,57 @@ void drm_gem_object_release_wrap(struct drm_gem_object *obj)
if (obj->filp)
drm_gem_object_release(obj);
}
+
+/**
+ * gem_create_mmap_offset - invent an mmap offset
+ * @obj: our object
+ *
+ * Standard implementation of offset generation for mmap as is
+ * duplicated in several drivers. This belongs in GEM.
+ */
+int gem_create_mmap_offset(struct drm_gem_object *obj)
+{
+ struct drm_device *dev = obj->dev;
+ struct drm_gem_mm *mm = dev->mm_private;
+ struct drm_map_list *list;
+ struct drm_local_map *map;
+ int ret;
+
+ list = &obj->map_list;
+ list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL);
+ if (list->map == NULL)
+ return -ENOMEM;
+ map = list->map;
+ map->type = _DRM_GEM;
+ map->size = obj->size;
+ map->handle = obj;
+
+ list->file_offset_node = drm_mm_search_free(&mm->offset_manager,
+ obj->size / PAGE_SIZE, 0, 0);
+ if (!list->file_offset_node) {
+ dev_err(dev->dev, "failed to allocate offset for bo %d\n",
+ obj->name);
+ ret = -ENOSPC;
+ goto free_it;
+ }
+ list->file_offset_node = drm_mm_get_block(list->file_offset_node,
+ obj->size / PAGE_SIZE, 0);
+ if (!list->file_offset_node) {
+ ret = -ENOMEM;
+ goto free_it;
+ }
+ list->hash.key = list->file_offset_node->start;
+ ret = drm_ht_insert_item(&mm->offset_hash, &list->hash);
+ if (ret) {
+ dev_err(dev->dev, "failed to add to map hash\n");
+ goto free_mm;
+ }
+ return 0;
+
+free_mm:
+ drm_mm_put_block(list->file_offset_node);
+free_it:
+ kfree(list->map);
+ list->map = NULL;
+ return ret;
+}
diff --git a/drivers/staging/gma500/gem_glue.h b/drivers/staging/gma500/gem_glue.h
index c38285b..a0f2bc4 100644
--- a/drivers/staging/gma500/gem_glue.h
+++ b/drivers/staging/gma500/gem_glue.h
@@ -1,4 +1,4 @@
extern void drm_gem_object_release_wrap(struct drm_gem_object *obj);
extern int drm_gem_private_object_init(struct drm_device *dev,
struct drm_gem_object *obj, size_t size);
-
+extern int gem_create_mmap_offset(struct drm_gem_object *obj);
diff --git a/drivers/staging/gma500/psb_gem.c b/drivers/staging/gma500/psb_gem.c
index 3f658e4..1e7faae 100644
--- a/drivers/staging/gma500/psb_gem.c
+++ b/drivers/staging/gma500/psb_gem.c
@@ -61,60 +61,6 @@ int psb_gem_get_aperture(struct drm_device *dev, void *data,
}

/**
- * psb_gem_create_mmap_offset - invent an mmap offset
- * @obj: our object
- *
- * This is basically doing by hand a pile of ugly crap which should
- * be done automatically by the GEM library code but isn't
- */
-static int psb_gem_create_mmap_offset(struct drm_gem_object *obj)
-{
- struct drm_device *dev = obj->dev;
- struct drm_gem_mm *mm = dev->mm_private;
- struct drm_map_list *list;
- struct drm_local_map *map;
- int ret;
-
- list = &obj->map_list;
- list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL);
- if (list->map == NULL)
- return -ENOMEM;
- map = list->map;
- map->type = _DRM_GEM;
- map->size = obj->size;
- map->handle = obj;
-
- list->file_offset_node = drm_mm_search_free(&mm->offset_manager,
- obj->size / PAGE_SIZE, 0, 0);
- if (!list->file_offset_node) {
- dev_err(dev->dev, "failed to allocate offset for bo %d\n",
- obj->name);
- ret = -ENOSPC;
- goto free_it;
- }
- list->file_offset_node = drm_mm_get_block(list->file_offset_node,
- obj->size / PAGE_SIZE, 0);
- if (!list->file_offset_node) {
- ret = -ENOMEM;
- goto free_it;
- }
- list->hash.key = list->file_offset_node->start;
- ret = drm_ht_insert_item(&mm->offset_hash, &list->hash);
- if (ret) {
- dev_err(dev->dev, "failed to add to map hash\n");
- goto free_mm;
- }
- return 0;
-
-free_mm:
- drm_mm_put_block(list->file_offset_node);
-free_it:
- kfree(list->map);
- list->map = NULL;
- return ret;
-}
-
-/**
* psb_gem_dumb_map_gtt - buffer mapping for dumb interface
* @file: our drm client file
* @dev: drm device
@@ -144,7 +90,7 @@ int psb_gem_dumb_map_gtt(struct drm_file *file, struct drm_device *dev,

/* Make it mmapable */
if (!obj->map_list.map) {
- ret = psb_gem_create_mmap_offset(obj);
+ ret = gem_create_mmap_offset(obj);
if (ret)
goto out;
}


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