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| author | Ralf Hoppe <rhoppe@de.ibm.com> | 2013-04-08 09:52:57 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-09-25 10:52:02 +0200 |
| commit | 8f933b1043e1e51f4776fc1ffe86752c7785fd4e (patch) | |
| tree | 9549e4659cd027279b213bab4e735e1ccd5b15d7 /drivers/s390/char/hmcdrv_cache.h | |
| parent | s390/sclp: reduce dependency on event type masks (diff) | |
| download | linux-8f933b1043e1e51f4776fc1ffe86752c7785fd4e.tar.xz linux-8f933b1043e1e51f4776fc1ffe86752c7785fd4e.zip | |
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>
Diffstat (limited to 'drivers/s390/char/hmcdrv_cache.h')
| -rw-r--r-- | drivers/s390/char/hmcdrv_cache.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/s390/char/hmcdrv_cache.h b/drivers/s390/char/hmcdrv_cache.h new file mode 100644 index 000000000000..a14b57526781 --- /dev/null +++ b/drivers/s390/char/hmcdrv_cache.h @@ -0,0 +1,24 @@ +/* + * 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__ */ |