diff options
Diffstat (limited to 'drivers/char/drm/drm_sman.c')
| -rw-r--r-- | drivers/char/drm/drm_sman.c | 353 | 
1 files changed, 0 insertions, 353 deletions
diff --git a/drivers/char/drm/drm_sman.c b/drivers/char/drm/drm_sman.c deleted file mode 100644 index 926f146390ce..000000000000 --- a/drivers/char/drm/drm_sman.c +++ /dev/null @@ -1,353 +0,0 @@ -/************************************************************************** - * - * Copyright 2006 Tungsten Graphics, Inc., Bismarck., ND., USA. - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sub license, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, - * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR - * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE - * USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - * - **************************************************************************/ -/* - * Simple memory manager interface that keeps track on allocate regions on a - * per "owner" basis. All regions associated with an "owner" can be released - * with a simple call. Typically if the "owner" exists. The owner is any - * "unsigned long" identifier. Can typically be a pointer to a file private - * struct or a context identifier. - * - * Authors: - * Thomas Hellström <thomas-at-tungstengraphics-dot-com> - */ - -#include "drm_sman.h" - -struct drm_owner_item { -	struct drm_hash_item owner_hash; -	struct list_head sman_list; -	struct list_head mem_blocks; -}; - -void drm_sman_takedown(struct drm_sman * sman) -{ -	drm_ht_remove(&sman->user_hash_tab); -	drm_ht_remove(&sman->owner_hash_tab); -	if (sman->mm) -		drm_free(sman->mm, sman->num_managers * sizeof(*sman->mm), -			 DRM_MEM_MM); -} - -EXPORT_SYMBOL(drm_sman_takedown); - -int -drm_sman_init(struct drm_sman * sman, unsigned int num_managers, -	      unsigned int user_order, unsigned int owner_order) -{ -	int ret = 0; - -	sman->mm = (struct drm_sman_mm *) drm_calloc(num_managers, sizeof(*sman->mm), -						DRM_MEM_MM); -	if (!sman->mm) { -		ret = -ENOMEM; -		goto out; -	} -	sman->num_managers = num_managers; -	INIT_LIST_HEAD(&sman->owner_items); -	ret = drm_ht_create(&sman->owner_hash_tab, owner_order); -	if (ret) -		goto out1; -	ret = drm_ht_create(&sman->user_hash_tab, user_order); -	if (!ret) -		goto out; - -	drm_ht_remove(&sman->owner_hash_tab); -out1: -	drm_free(sman->mm, num_managers * sizeof(*sman->mm), DRM_MEM_MM); -out: -	return ret; -} - -EXPORT_SYMBOL(drm_sman_init); - -static void *drm_sman_mm_allocate(void *private, unsigned long size, -				  unsigned alignment) -{ -	struct drm_mm *mm = (struct drm_mm *) private; -	struct drm_mm_node *tmp; - -	tmp = drm_mm_search_free(mm, size, alignment, 1); -	if (!tmp) { -		return NULL; -	} -	tmp = drm_mm_get_block(tmp, size, alignment); -	return tmp; -} - -static void drm_sman_mm_free(void *private, void *ref) -{ -	struct drm_mm_node *node = (struct drm_mm_node *) ref; - -	drm_mm_put_block(node); -} - -static void drm_sman_mm_destroy(void *private) -{ -	struct drm_mm *mm = (struct drm_mm *) private; -	drm_mm_takedown(mm); -	drm_free(mm, sizeof(*mm), DRM_MEM_MM); -} - -static unsigned long drm_sman_mm_offset(void *private, void *ref) -{ -	struct drm_mm_node *node = (struct drm_mm_node *) ref; -	return node->start; -} - -int -drm_sman_set_range(struct drm_sman * sman, unsigned int manager, -		   unsigned long start, unsigned long size) -{ -	struct drm_sman_mm *sman_mm; -	struct drm_mm *mm; -	int ret; - -	BUG_ON(manager >= sman->num_managers); - -	sman_mm = &sman->mm[manager]; -	mm = drm_calloc(1, sizeof(*mm), DRM_MEM_MM); -	if (!mm) { -		return -ENOMEM; -	} -	sman_mm->private = mm; -	ret = drm_mm_init(mm, start, size); - -	if (ret) { -		drm_free(mm, sizeof(*mm), DRM_MEM_MM); -		return ret; -	} - -	sman_mm->allocate = drm_sman_mm_allocate; -	sman_mm->free = drm_sman_mm_free; -	sman_mm->destroy = drm_sman_mm_destroy; -	sman_mm->offset = drm_sman_mm_offset; - -	return 0; -} - -EXPORT_SYMBOL(drm_sman_set_range); - -int -drm_sman_set_manager(struct drm_sman * sman, unsigned int manager, -		     struct drm_sman_mm * allocator) -{ -	BUG_ON(manager >= sman->num_managers); -	sman->mm[manager] = *allocator; - -	return 0; -} -EXPORT_SYMBOL(drm_sman_set_manager); - -static struct drm_owner_item *drm_sman_get_owner_item(struct drm_sman * sman, -						 unsigned long owner) -{ -	int ret; -	struct drm_hash_item *owner_hash_item; -	struct drm_owner_item *owner_item; - -	ret = drm_ht_find_item(&sman->owner_hash_tab, owner, &owner_hash_item); -	if (!ret) { -		return drm_hash_entry(owner_hash_item, struct drm_owner_item, -				      owner_hash); -	} - -	owner_item = drm_calloc(1, sizeof(*owner_item), DRM_MEM_MM); -	if (!owner_item) -		goto out; - -	INIT_LIST_HEAD(&owner_item->mem_blocks); -	owner_item->owner_hash.key = owner; -	if (drm_ht_insert_item(&sman->owner_hash_tab, &owner_item->owner_hash)) -		goto out1; - -	list_add_tail(&owner_item->sman_list, &sman->owner_items); -	return owner_item; - -out1: -	drm_free(owner_item, sizeof(*owner_item), DRM_MEM_MM); -out: -	return NULL; -} - -struct drm_memblock_item *drm_sman_alloc(struct drm_sman *sman, unsigned int manager, -				    unsigned long size, unsigned alignment, -				    unsigned long owner) -{ -	void *tmp; -	struct drm_sman_mm *sman_mm; -	struct drm_owner_item *owner_item; -	struct drm_memblock_item *memblock; - -	BUG_ON(manager >= sman->num_managers); - -	sman_mm = &sman->mm[manager]; -	tmp = sman_mm->allocate(sman_mm->private, size, alignment); - -	if (!tmp) { -		return NULL; -	} - -	memblock = drm_calloc(1, sizeof(*memblock), DRM_MEM_MM); - -	if (!memblock) -		goto out; - -	memblock->mm_info = tmp; -	memblock->mm = sman_mm; -	memblock->sman = sman; - -	if (drm_ht_just_insert_please -	    (&sman->user_hash_tab, &memblock->user_hash, -	     (unsigned long)memblock, 32, 0, 0)) -		goto out1; - -	owner_item = drm_sman_get_owner_item(sman, owner); -	if (!owner_item) -		goto out2; - -	list_add_tail(&memblock->owner_list, &owner_item->mem_blocks); - -	return memblock; - -out2: -	drm_ht_remove_item(&sman->user_hash_tab, &memblock->user_hash); -out1: -	drm_free(memblock, sizeof(*memblock), DRM_MEM_MM); -out: -	sman_mm->free(sman_mm->private, tmp); - -	return NULL; -} - -EXPORT_SYMBOL(drm_sman_alloc); - -static void drm_sman_free(struct drm_memblock_item *item) -{ -	struct drm_sman *sman = item->sman; - -	list_del(&item->owner_list); -	drm_ht_remove_item(&sman->user_hash_tab, &item->user_hash); -	item->mm->free(item->mm->private, item->mm_info); -	drm_free(item, sizeof(*item), DRM_MEM_MM); -} - -int drm_sman_free_key(struct drm_sman *sman, unsigned int key) -{ -	struct drm_hash_item *hash_item; -	struct drm_memblock_item *memblock_item; - -	if (drm_ht_find_item(&sman->user_hash_tab, key, &hash_item)) -		return -EINVAL; - -	memblock_item = drm_hash_entry(hash_item, struct drm_memblock_item, -				       user_hash); -	drm_sman_free(memblock_item); -	return 0; -} - -EXPORT_SYMBOL(drm_sman_free_key); - -static void drm_sman_remove_owner(struct drm_sman *sman, -				  struct drm_owner_item *owner_item) -{ -	list_del(&owner_item->sman_list); -	drm_ht_remove_item(&sman->owner_hash_tab, &owner_item->owner_hash); -	drm_free(owner_item, sizeof(*owner_item), DRM_MEM_MM); -} - -int drm_sman_owner_clean(struct drm_sman *sman, unsigned long owner) -{ - -	struct drm_hash_item *hash_item; -	struct drm_owner_item *owner_item; - -	if (drm_ht_find_item(&sman->owner_hash_tab, owner, &hash_item)) { -		return -1; -	} - -	owner_item = drm_hash_entry(hash_item, struct drm_owner_item, owner_hash); -	if (owner_item->mem_blocks.next == &owner_item->mem_blocks) { -		drm_sman_remove_owner(sman, owner_item); -		return -1; -	} - -	return 0; -} - -EXPORT_SYMBOL(drm_sman_owner_clean); - -static void drm_sman_do_owner_cleanup(struct drm_sman *sman, -				      struct drm_owner_item *owner_item) -{ -	struct drm_memblock_item *entry, *next; - -	list_for_each_entry_safe(entry, next, &owner_item->mem_blocks, -				 owner_list) { -		drm_sman_free(entry); -	} -	drm_sman_remove_owner(sman, owner_item); -} - -void drm_sman_owner_cleanup(struct drm_sman *sman, unsigned long owner) -{ - -	struct drm_hash_item *hash_item; -	struct drm_owner_item *owner_item; - -	if (drm_ht_find_item(&sman->owner_hash_tab, owner, &hash_item)) { - -		return; -	} - -	owner_item = drm_hash_entry(hash_item, struct drm_owner_item, owner_hash); -	drm_sman_do_owner_cleanup(sman, owner_item); -} - -EXPORT_SYMBOL(drm_sman_owner_cleanup); - -void drm_sman_cleanup(struct drm_sman *sman) -{ -	struct drm_owner_item *entry, *next; -	unsigned int i; -	struct drm_sman_mm *sman_mm; - -	list_for_each_entry_safe(entry, next, &sman->owner_items, sman_list) { -		drm_sman_do_owner_cleanup(sman, entry); -	} -	if (sman->mm) { -		for (i = 0; i < sman->num_managers; ++i) { -			sman_mm = &sman->mm[i]; -			if (sman_mm->private) { -				sman_mm->destroy(sman_mm->private); -				sman_mm->private = NULL; -			} -		} -	} -} - -EXPORT_SYMBOL(drm_sman_cleanup);  |