diff options
Diffstat (limited to 'linux-core/drm_regman.c')
| -rw-r--r-- | linux-core/drm_regman.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/linux-core/drm_regman.c b/linux-core/drm_regman.c deleted file mode 100644 index aa117323..00000000 --- a/linux-core/drm_regman.c +++ /dev/null @@ -1,200 +0,0 @@ -/************************************************************************** - * Copyright (c) 2007 Tungsten Graphics, Inc., Cedar Park, TX., 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. - * - **************************************************************************/ -/* - * An allocate-fence manager implementation intended for sets of base-registers - * or tiling-registers. - */ - -#include "drmP.h" - -/* - * Allocate a compatible register and put it on the unfenced list. - */ - -int drm_regs_alloc(struct drm_reg_manager *manager, - const void *data, - uint32_t fence_class, - uint32_t fence_type, - int interruptible, int no_wait, struct drm_reg **reg) -{ - struct drm_reg *entry, *next_entry; - int ret; - - *reg = NULL; - - /* - * Search the unfenced list. - */ - - list_for_each_entry(entry, &manager->unfenced, head) { - if (manager->reg_reusable(entry, data)) { - entry->new_fence_type |= fence_type; - goto out; - } - } - - /* - * Search the lru list. - */ - - list_for_each_entry_safe(entry, next_entry, &manager->lru, head) { - struct drm_fence_object *fence = entry->fence; - if (fence->fence_class == fence_class && - (entry->fence_type & fence_type) == entry->fence_type && - manager->reg_reusable(entry, data)) { - list_del(&entry->head); - entry->new_fence_type = fence_type; - list_add_tail(&entry->head, &manager->unfenced); - goto out; - } - } - - /* - * Search the free list. - */ - - list_for_each_entry(entry, &manager->free, head) { - list_del(&entry->head); - entry->new_fence_type = fence_type; - list_add_tail(&entry->head, &manager->unfenced); - goto out; - } - - if (no_wait) - return -EBUSY; - - /* - * Go back to the lru list and try to expire fences. - */ - - list_for_each_entry_safe(entry, next_entry, &manager->lru, head) { - BUG_ON(!entry->fence); - ret = drm_fence_object_wait(entry->fence, 0, !interruptible, - entry->fence_type); - if (ret) - return ret; - - drm_fence_usage_deref_unlocked(&entry->fence); - list_del(&entry->head); - entry->new_fence_type = fence_type; - list_add_tail(&entry->head, &manager->unfenced); - goto out; - } - - /* - * Oops. All registers are used up :(. - */ - - return -EBUSY; -out: - *reg = entry; - return 0; -} -EXPORT_SYMBOL(drm_regs_alloc); - -void drm_regs_fence(struct drm_reg_manager *manager, - struct drm_fence_object *fence) -{ - struct drm_reg *entry; - struct drm_reg *next_entry; - - if (!fence) { - - /* - * Old fence (if any) is still valid. - * Put back on free and lru lists. - */ - - list_for_each_entry_safe_reverse(entry, next_entry, - &manager->unfenced, head) { - list_del(&entry->head); - list_add(&entry->head, (entry->fence) ? - &manager->lru : &manager->free); - } - } else { - - /* - * Fence with a new fence and put on lru list. - */ - - list_for_each_entry_safe(entry, next_entry, &manager->unfenced, - head) { - list_del(&entry->head); - if (entry->fence) - drm_fence_usage_deref_unlocked(&entry->fence); - drm_fence_reference_unlocked(&entry->fence, fence); - - entry->fence_type = entry->new_fence_type; - BUG_ON((entry->fence_type & fence->type) != - entry->fence_type); - - list_add_tail(&entry->head, &manager->lru); - } - } -} -EXPORT_SYMBOL(drm_regs_fence); - -void drm_regs_free(struct drm_reg_manager *manager) -{ - struct drm_reg *entry; - struct drm_reg *next_entry; - - drm_regs_fence(manager, NULL); - - list_for_each_entry_safe(entry, next_entry, &manager->free, head) { - list_del(&entry->head); - manager->reg_destroy(entry); - } - - list_for_each_entry_safe(entry, next_entry, &manager->lru, head) { - - (void)drm_fence_object_wait(entry->fence, 1, 1, - entry->fence_type); - list_del(&entry->head); - drm_fence_usage_deref_unlocked(&entry->fence); - manager->reg_destroy(entry); - } -} -EXPORT_SYMBOL(drm_regs_free); - -void drm_regs_add(struct drm_reg_manager *manager, struct drm_reg *reg) -{ - reg->fence = NULL; - list_add_tail(®->head, &manager->free); -} -EXPORT_SYMBOL(drm_regs_add); - -void drm_regs_init(struct drm_reg_manager *manager, - int (*reg_reusable) (const struct drm_reg *, const void *), - void (*reg_destroy) (struct drm_reg *)) -{ - INIT_LIST_HEAD(&manager->free); - INIT_LIST_HEAD(&manager->lru); - INIT_LIST_HEAD(&manager->unfenced); - manager->reg_reusable = reg_reusable; - manager->reg_destroy = reg_destroy; -} -EXPORT_SYMBOL(drm_regs_init); |