![Adrian Bunk](/assets/img/avatar_default.png)
This patch contains the following cleanups: - make 3 needlessly global functions static - sis_mm.c: fix compile warnings with CONFIG_FB_SIS=y Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Dave Airlie <airlied@linux.ie>
353 lines
8.7 KiB
C
353 lines
8.7 KiB
C
/**************************************************************************
|
|
*
|
|
* 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"
|
|
|
|
typedef struct drm_owner_item {
|
|
drm_hash_item_t owner_hash;
|
|
struct list_head sman_list;
|
|
struct list_head mem_blocks;
|
|
} drm_owner_item_t;
|
|
|
|
void drm_sman_takedown(drm_sman_t * 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(drm_sman_t * sman, unsigned int num_managers,
|
|
unsigned int user_order, unsigned int owner_order)
|
|
{
|
|
int ret = 0;
|
|
|
|
sman->mm = (drm_sman_mm_t *) 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)
|
|
{
|
|
drm_mm_t *mm = (drm_mm_t *) private;
|
|
drm_mm_node_t *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)
|
|
{
|
|
drm_mm_t *mm = (drm_mm_t *) private;
|
|
drm_mm_node_t *node = (drm_mm_node_t *) ref;
|
|
|
|
drm_mm_put_block(mm, node);
|
|
}
|
|
|
|
static void drm_sman_mm_destroy(void *private)
|
|
{
|
|
drm_mm_t *mm = (drm_mm_t *) private;
|
|
drm_mm_takedown(mm);
|
|
drm_free(mm, sizeof(*mm), DRM_MEM_MM);
|
|
}
|
|
|
|
static unsigned long drm_sman_mm_offset(void *private, void *ref)
|
|
{
|
|
drm_mm_node_t *node = (drm_mm_node_t *) ref;
|
|
return node->start;
|
|
}
|
|
|
|
int
|
|
drm_sman_set_range(drm_sman_t * sman, unsigned int manager,
|
|
unsigned long start, unsigned long size)
|
|
{
|
|
drm_sman_mm_t *sman_mm;
|
|
drm_mm_t *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(drm_sman_t * sman, unsigned int manager,
|
|
drm_sman_mm_t * allocator)
|
|
{
|
|
BUG_ON(manager >= sman->num_managers);
|
|
sman->mm[manager] = *allocator;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static drm_owner_item_t *drm_sman_get_owner_item(drm_sman_t * sman,
|
|
unsigned long owner)
|
|
{
|
|
int ret;
|
|
drm_hash_item_t *owner_hash_item;
|
|
drm_owner_item_t *owner_item;
|
|
|
|
ret = drm_ht_find_item(&sman->owner_hash_tab, owner, &owner_hash_item);
|
|
if (!ret) {
|
|
return drm_hash_entry(owner_hash_item, drm_owner_item_t,
|
|
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;
|
|
}
|
|
|
|
drm_memblock_item_t *drm_sman_alloc(drm_sman_t *sman, unsigned int manager,
|
|
unsigned long size, unsigned alignment,
|
|
unsigned long owner)
|
|
{
|
|
void *tmp;
|
|
drm_sman_mm_t *sman_mm;
|
|
drm_owner_item_t *owner_item;
|
|
drm_memblock_item_t *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(drm_memblock_item_t *item)
|
|
{
|
|
drm_sman_t *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(drm_sman_t *sman, unsigned int key)
|
|
{
|
|
drm_hash_item_t *hash_item;
|
|
drm_memblock_item_t *memblock_item;
|
|
|
|
if (drm_ht_find_item(&sman->user_hash_tab, key, &hash_item))
|
|
return -EINVAL;
|
|
|
|
memblock_item = drm_hash_entry(hash_item, drm_memblock_item_t, user_hash);
|
|
drm_sman_free(memblock_item);
|
|
return 0;
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_sman_free_key);
|
|
|
|
static void drm_sman_remove_owner(drm_sman_t *sman,
|
|
drm_owner_item_t *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(drm_sman_t *sman, unsigned long owner)
|
|
{
|
|
|
|
drm_hash_item_t *hash_item;
|
|
drm_owner_item_t *owner_item;
|
|
|
|
if (drm_ht_find_item(&sman->owner_hash_tab, owner, &hash_item)) {
|
|
return -1;
|
|
}
|
|
|
|
owner_item = drm_hash_entry(hash_item, drm_owner_item_t, 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(drm_sman_t *sman,
|
|
drm_owner_item_t *owner_item)
|
|
{
|
|
drm_memblock_item_t *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(drm_sman_t *sman, unsigned long owner)
|
|
{
|
|
|
|
drm_hash_item_t *hash_item;
|
|
drm_owner_item_t *owner_item;
|
|
|
|
if (drm_ht_find_item(&sman->owner_hash_tab, owner, &hash_item)) {
|
|
|
|
return;
|
|
}
|
|
|
|
owner_item = drm_hash_entry(hash_item, drm_owner_item_t, owner_hash);
|
|
drm_sman_do_owner_cleanup(sman, owner_item);
|
|
}
|
|
|
|
EXPORT_SYMBOL(drm_sman_owner_cleanup);
|
|
|
|
void drm_sman_cleanup(drm_sman_t *sman)
|
|
{
|
|
drm_owner_item_t *entry, *next;
|
|
unsigned int i;
|
|
drm_sman_mm_t *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);
|