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