1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
|
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
/*
* Copyright (c) 2018-2025 Advanced Micro Devices, Inc. All rights reserved.
*/
#ifndef IONIC_MEMORY_H
#define IONIC_MEMORY_H
#include <stdlib.h>
/**
* ionic_map_anon() - Allocate page-aligned anonymous memory
* @size: Size to allocate
*
* Return: pointer to first page of memory, or NULL
*/
void *ionic_map_anon(size_t size);
/**
* ionic_map_device() - Map device memory via fd and offset
* @size: Size to map
* @fd: File descriptor representing the device context
* @offset: Offset provided by the kernel as a handle for the mapping
*
* The mapping may be write-only, and may use write-combining.
*
* Return: pointer to first page of the mapping, or NULL
*/
void *ionic_map_device(size_t size, int fd, size_t offset);
/**
* ionic_unmap() - Unmap anonymous or device memory
* @ptr: Pointer to the first page, or NULL (do nothing)
* @size: Size of the map
*/
void ionic_unmap(void *ptr, size_t size);
#endif /* IONIC_MEMORY_H */
|