diff options
Diffstat (limited to 'drivers/gpu/drm/drm_sman.c')
-rw-r--r-- | drivers/gpu/drm/drm_sman.c | 351 |
1 files changed, 0 insertions, 351 deletions
diff --git a/drivers/gpu/drm/drm_sman.c b/drivers/gpu/drm/drm_sman.c deleted file mode 100644 index cebce45f442..00000000000 --- a/drivers/gpu/drm/drm_sman.c +++ /dev/null @@ -1,351 +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 <linux/export.h> -#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); - kfree(sman->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 = kcalloc(num_managers, sizeof(*sman->mm), GFP_KERNEL); - 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: - kfree(sman->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); - kfree(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 = kzalloc(sizeof(*mm), GFP_KERNEL); - if (!mm) { - return -ENOMEM; - } - sman_mm->private = mm; - ret = drm_mm_init(mm, start, size); - - if (ret) { - kfree(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 = kzalloc(sizeof(*owner_item), GFP_KERNEL); - 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: - kfree(owner_item); -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 = kzalloc(sizeof(*memblock), GFP_KERNEL); - - 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: - kfree(memblock); -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); - kfree(item); -} - -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); - kfree(owner_item); -} - -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); |