1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * SE/HMC Drive (Read) Cache Functions
4 *
5 * Copyright IBM Corp. 2013
6 * Author(s): Ralf Hoppe (rhoppe@de.ibm.com)
7 */
8
9#ifndef __HMCDRV_CACHE_H__
10#define __HMCDRV_CACHE_H__
11
12#include <linux/mmzone.h>
13#include "hmcdrv_ftp.h"
14
15#define HMCDRV_CACHE_SIZE_DFLT (MAX_ORDER_NR_PAGES * PAGE_SIZE / 2UL)
16
17typedef ssize_t (*hmcdrv_cache_ftpfunc)(const struct hmcdrv_ftp_cmdspec *ftp,
18 size_t *fsize);
19
20ssize_t hmcdrv_cache_cmd(const struct hmcdrv_ftp_cmdspec *ftp,
21 hmcdrv_cache_ftpfunc func);
22int hmcdrv_cache_startup(size_t cachesize);
23void hmcdrv_cache_shutdown(void);
24
25#endif /* __HMCDRV_CACHE_H__ */
26

source code of linux/drivers/s390/char/hmcdrv_cache.h