147 lines
3.9 KiB
C
147 lines
3.9 KiB
C
/*
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* Copyright 2020 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Christian König
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*/
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#include <drm/ttm/ttm_resource.h>
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#include <drm/ttm/ttm_bo_driver.h>
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int ttm_resource_alloc(struct ttm_buffer_object *bo,
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const struct ttm_place *place,
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struct ttm_resource *res)
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{
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struct ttm_resource_manager *man =
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ttm_manager_type(bo->bdev, res->mem_type);
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res->mm_node = NULL;
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if (!man->func || !man->func->alloc)
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return 0;
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return man->func->alloc(man, bo, place, res);
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}
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void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource *res)
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{
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struct ttm_resource_manager *man =
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ttm_manager_type(bo->bdev, res->mem_type);
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if (man->func && man->func->free)
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man->func->free(man, res);
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res->mm_node = NULL;
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res->mem_type = TTM_PL_SYSTEM;
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}
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EXPORT_SYMBOL(ttm_resource_free);
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/**
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* ttm_resource_manager_init
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*
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* @man: memory manager object to init
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* @p_size: size managed area in pages.
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*
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* Initialise core parts of a manager object.
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*/
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void ttm_resource_manager_init(struct ttm_resource_manager *man,
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unsigned long p_size)
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{
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unsigned i;
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spin_lock_init(&man->move_lock);
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man->size = p_size;
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for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i)
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INIT_LIST_HEAD(&man->lru[i]);
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man->move = NULL;
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}
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EXPORT_SYMBOL(ttm_resource_manager_init);
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/*
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* ttm_resource_manager_evict_all
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*
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* @bdev - device to use
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* @man - manager to use
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*
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* Evict all the objects out of a memory manager until it is empty.
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* Part of memory manager cleanup sequence.
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*/
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int ttm_resource_manager_evict_all(struct ttm_bo_device *bdev,
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struct ttm_resource_manager *man)
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{
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struct ttm_operation_ctx ctx = {
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.interruptible = false,
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.no_wait_gpu = false,
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.force_alloc = true
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};
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struct ttm_bo_global *glob = &ttm_bo_glob;
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struct dma_fence *fence;
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int ret;
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unsigned i;
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/*
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* Can't use standard list traversal since we're unlocking.
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*/
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spin_lock(&glob->lru_lock);
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for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) {
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while (!list_empty(&man->lru[i])) {
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spin_unlock(&glob->lru_lock);
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ret = ttm_mem_evict_first(bdev, man, NULL, &ctx,
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NULL);
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if (ret)
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return ret;
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spin_lock(&glob->lru_lock);
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}
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}
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spin_unlock(&glob->lru_lock);
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spin_lock(&man->move_lock);
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fence = dma_fence_get(man->move);
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spin_unlock(&man->move_lock);
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if (fence) {
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ret = dma_fence_wait(fence, false);
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dma_fence_put(fence);
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if (ret)
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return ret;
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}
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return 0;
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}
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EXPORT_SYMBOL(ttm_resource_manager_evict_all);
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/**
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* ttm_resource_manager_debug
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*
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* @man: manager type to dump.
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* @p: printer to use for debug.
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*/
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void ttm_resource_manager_debug(struct ttm_resource_manager *man,
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struct drm_printer *p)
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{
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drm_printf(p, " use_type: %d\n", man->use_type);
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drm_printf(p, " use_tt: %d\n", man->use_tt);
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drm_printf(p, " size: %llu\n", man->size);
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if (man->func && man->func->debug)
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(*man->func->debug)(man, p);
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}
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EXPORT_SYMBOL(ttm_resource_manager_debug);
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