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/*
* 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;
spin_lock_init(&man->move_lock);
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);
if (man->func && man->func->debug)
(*man->func->debug)(man, p);
}
EXPORT_SYMBOL(ttm_resource_manager_debug);
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