hmcdrv_cache.h

 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__ */