linux-stable/drivers/s390/char/hmcdrv_cache.h
Ralf Hoppe 8f933b1043 s390/hmcdrv: HMC drive CD/DVD access
This device driver allows accessing a HMC drive CD/DVD-ROM.
It can be used in a LPAR and z/VM environment.

Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Ralf Hoppe <rhoppe@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2014-09-25 10:52:02 +02:00

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616 B
C

/*
* SE/HMC Drive (Read) Cache Functions
*
* Copyright IBM Corp. 2013
* Author(s): Ralf Hoppe (rhoppe@de.ibm.com)
*/
#ifndef __HMCDRV_CACHE_H__
#define __HMCDRV_CACHE_H__
#include <linux/mmzone.h>
#include "hmcdrv_ftp.h"
#define HMCDRV_CACHE_SIZE_DFLT (MAX_ORDER_NR_PAGES * PAGE_SIZE / 2UL)
typedef ssize_t (*hmcdrv_cache_ftpfunc)(const struct hmcdrv_ftp_cmdspec *ftp,
size_t *fsize);
ssize_t hmcdrv_cache_cmd(const struct hmcdrv_ftp_cmdspec *ftp,
hmcdrv_cache_ftpfunc func);
int hmcdrv_cache_startup(size_t cachesize);
void hmcdrv_cache_shutdown(void);
#endif /* __HMCDRV_CACHE_H__ */