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91 lines
2.8 KiB
91 lines
2.8 KiB
/* SPDX-License-Identifier: GPL-2.0 OR MIT */ |
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/* |
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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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#ifndef _TTM_PAGE_POOL_H_ |
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#define _TTM_PAGE_POOL_H_ |
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#include <linux/mmzone.h> |
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#include <linux/llist.h> |
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#include <linux/spinlock.h> |
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#include <drm/ttm/ttm_caching.h> |
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struct device; |
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struct ttm_tt; |
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struct ttm_pool; |
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struct ttm_operation_ctx; |
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/** |
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* ttm_pool_type - Pool for a certain memory type |
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* |
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* @pool: the pool we belong to, might be NULL for the global ones |
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* @order: the allocation order our pages have |
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* @caching: the caching type our pages have |
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* @shrinker_list: our place on the global shrinker list |
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* @lock: protection of the page list |
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* @pages: the list of pages in the pool |
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*/ |
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struct ttm_pool_type { |
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struct ttm_pool *pool; |
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unsigned int order; |
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enum ttm_caching caching; |
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struct list_head shrinker_list; |
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spinlock_t lock; |
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struct list_head pages; |
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}; |
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/** |
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* ttm_pool - Pool for all caching and orders |
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* |
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* @use_dma_alloc: if coherent DMA allocations should be used |
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* @use_dma32: if GFP_DMA32 should be used |
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* @caching: pools for each caching/order |
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*/ |
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struct ttm_pool { |
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struct device *dev; |
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bool use_dma_alloc; |
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bool use_dma32; |
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struct { |
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struct ttm_pool_type orders[MAX_ORDER]; |
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} caching[TTM_NUM_CACHING_TYPES]; |
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}; |
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int ttm_pool_alloc(struct ttm_pool *pool, struct ttm_tt *tt, |
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struct ttm_operation_ctx *ctx); |
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void ttm_pool_free(struct ttm_pool *pool, struct ttm_tt *tt); |
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void ttm_pool_init(struct ttm_pool *pool, struct device *dev, |
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bool use_dma_alloc, bool use_dma32); |
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void ttm_pool_fini(struct ttm_pool *pool); |
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int ttm_pool_debugfs(struct ttm_pool *pool, struct seq_file *m); |
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int ttm_pool_mgr_init(unsigned long num_pages); |
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void ttm_pool_mgr_fini(void); |
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#endif
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