providers/ionic/ionic_memory.h

/* 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 */