diff options
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_bo_manager.c')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_bo_manager.c | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_bo_manager.c b/drivers/gpu/drm/ttm/ttm_bo_manager.c deleted file mode 100644 index e4367f91472a..000000000000 --- a/drivers/gpu/drm/ttm/ttm_bo_manager.c +++ /dev/null @@ -1,151 +0,0 @@ -/************************************************************************** - * - * Copyright (c) 2007-2010 VMware, Inc., Palo Alto, CA., 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 above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions - * of the Software. - * - * 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. - * - **************************************************************************/ -/* - * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com> - */ - -#include <drm/ttm/ttm_module.h> -#include <drm/ttm/ttm_bo_driver.h> -#include <drm/ttm/ttm_placement.h> -#include <drm/drm_mm.h> -#include <linux/slab.h> -#include <linux/spinlock.h> -#include <linux/module.h> - -/** - * Currently we use a spinlock for the lock, but a mutex *may* be - * more appropriate to reduce scheduling latency if the range manager - * ends up with very fragmented allocation patterns. - */ - -struct ttm_range_manager { - struct drm_mm mm; - spinlock_t lock; -}; - -static int ttm_bo_man_get_node(struct ttm_mem_type_manager *man, - struct ttm_buffer_object *bo, - struct ttm_placement *placement, - struct ttm_mem_reg *mem) -{ - struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv; - struct drm_mm *mm = &rman->mm; - struct drm_mm_node *node = NULL; - unsigned long lpfn; - int ret; - - lpfn = placement->lpfn; - if (!lpfn) - lpfn = man->size; - do { - ret = drm_mm_pre_get(mm); - if (unlikely(ret)) - return ret; - - spin_lock(&rman->lock); - node = drm_mm_search_free_in_range(mm, - mem->num_pages, mem->page_alignment, - placement->fpfn, lpfn, 1); - if (unlikely(node == NULL)) { - spin_unlock(&rman->lock); - return 0; - } - node = drm_mm_get_block_atomic_range(node, mem->num_pages, - mem->page_alignment, - placement->fpfn, - lpfn); - spin_unlock(&rman->lock); - } while (node == NULL); - - mem->mm_node = node; - mem->start = node->start; - return 0; -} - -static void ttm_bo_man_put_node(struct ttm_mem_type_manager *man, - struct ttm_mem_reg *mem) -{ - struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv; - - if (mem->mm_node) { - spin_lock(&rman->lock); - drm_mm_put_block(mem->mm_node); - spin_unlock(&rman->lock); - mem->mm_node = NULL; - } -} - -static int ttm_bo_man_init(struct ttm_mem_type_manager *man, - unsigned long p_size) -{ - struct ttm_range_manager *rman; - - rman = kzalloc(sizeof(*rman), GFP_KERNEL); - if (!rman) - return -ENOMEM; - - drm_mm_init(&rman->mm, 0, p_size); - spin_lock_init(&rman->lock); - man->priv = rman; - return 0; -} - -static int ttm_bo_man_takedown(struct ttm_mem_type_manager *man) -{ - struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv; - struct drm_mm *mm = &rman->mm; - - spin_lock(&rman->lock); - if (drm_mm_clean(mm)) { - drm_mm_takedown(mm); - spin_unlock(&rman->lock); - kfree(rman); - man->priv = NULL; - return 0; - } - spin_unlock(&rman->lock); - return -EBUSY; -} - -static void ttm_bo_man_debug(struct ttm_mem_type_manager *man, - const char *prefix) -{ - struct ttm_range_manager *rman = (struct ttm_range_manager *) man->priv; - - spin_lock(&rman->lock); - drm_mm_debug_table(&rman->mm, prefix); - spin_unlock(&rman->lock); -} - -const struct ttm_mem_type_manager_func ttm_bo_manager_func = { - ttm_bo_man_init, - ttm_bo_man_takedown, - ttm_bo_man_get_node, - ttm_bo_man_put_node, - ttm_bo_man_debug -}; -EXPORT_SYMBOL(ttm_bo_manager_func); |
