diff options
Diffstat (limited to 'drivers/gpu/drm/ttm/ttm_resource.c')
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_resource.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c new file mode 100644 index 000000000000..33b642532e5c --- /dev/null +++ b/drivers/gpu/drm/ttm/ttm_resource.c @@ -0,0 +1,151 @@ +/* + * Copyright 2020 Advanced Micro Devices, Inc. + * + * 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, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Christian König + */ + +#include <drm/ttm/ttm_resource.h> +#include <drm/ttm/ttm_bo_driver.h> + +int ttm_resource_alloc(struct ttm_buffer_object *bo, + const struct ttm_place *place, + struct ttm_resource *res) +{ + struct ttm_resource_manager *man = + ttm_manager_type(bo->bdev, res->mem_type); + + res->mm_node = NULL; + if (!man->func || !man->func->alloc) + return 0; + + return man->func->alloc(man, bo, place, res); +} + +void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource *res) +{ + struct ttm_resource_manager *man = + ttm_manager_type(bo->bdev, res->mem_type); + + if (man->func && man->func->free) + man->func->free(man, res); + + res->mm_node = NULL; + res->mem_type = TTM_PL_SYSTEM; +} +EXPORT_SYMBOL(ttm_resource_free); + +/** + * ttm_resource_manager_init + * + * @man: memory manager object to init + * @p_size: size managed area in pages. + * + * Initialise core parts of a manager object. + */ +void ttm_resource_manager_init(struct ttm_resource_manager *man, + unsigned long p_size) +{ + unsigned i; + + man->use_io_reserve_lru = false; + mutex_init(&man->io_reserve_mutex); + spin_lock_init(&man->move_lock); + INIT_LIST_HEAD(&man->io_reserve_lru); + man->size = p_size; + + for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) + INIT_LIST_HEAD(&man->lru[i]); + man->move = NULL; +} +EXPORT_SYMBOL(ttm_resource_manager_init); + +/* + * ttm_resource_manager_force_list_clean + * + * @bdev - device to use + * @man - manager to use + * + * Force all the objects out of a memory manager until clean. + * Part of memory manager cleanup sequence. + */ +int ttm_resource_manager_force_list_clean(struct ttm_bo_device *bdev, + struct ttm_resource_manager *man) +{ + struct ttm_operation_ctx ctx = { + .interruptible = false, + .no_wait_gpu = false, + .flags = TTM_OPT_FLAG_FORCE_ALLOC + }; + struct ttm_bo_global *glob = &ttm_bo_glob; + struct dma_fence *fence; + int ret; + unsigned i; + + /* + * Can't use standard list traversal since we're unlocking. + */ + + spin_lock(&glob->lru_lock); + for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) { + while (!list_empty(&man->lru[i])) { + spin_unlock(&glob->lru_lock); + ret = ttm_mem_evict_first(bdev, man, NULL, &ctx, + NULL); + if (ret) + return ret; + spin_lock(&glob->lru_lock); + } + } + spin_unlock(&glob->lru_lock); + + spin_lock(&man->move_lock); + fence = dma_fence_get(man->move); + spin_unlock(&man->move_lock); + + if (fence) { + ret = dma_fence_wait(fence, false); + dma_fence_put(fence); + if (ret) + return ret; + } + + return 0; +} +EXPORT_SYMBOL(ttm_resource_manager_force_list_clean); + +/** + * ttm_resource_manager_debug + * + * @man: manager type to dump. + * @p: printer to use for debug. + */ +void ttm_resource_manager_debug(struct ttm_resource_manager *man, + struct drm_printer *p) +{ + drm_printf(p, " use_type: %d\n", man->use_type); + drm_printf(p, " use_tt: %d\n", man->use_tt); + drm_printf(p, " size: %llu\n", man->size); + drm_printf(p, " available_caching: 0x%08X\n", man->available_caching); + drm_printf(p, " default_caching: 0x%08X\n", man->default_caching); + if (man->func && man->func->debug) + (*man->func->debug)(man, p); +} +EXPORT_SYMBOL(ttm_resource_manager_debug); |