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s390/sclp: Add SCLP character device driver

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Add a character misc device "sclp_ctl" that allows to run SCCBs
from user space using the SCLP_CTL_SCCB ioctl.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Michael Holzheu
2013-06-06 09:52:08 +02:00
committed by Martin Schwidefsky
parent e9a8f32a98
commit d475f942b1
8 changed files with 192 additions and 15 deletions
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1
arch/s390/include/uapi/asm/Kbuild
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@@ -35,6 +35,7 @@ header-y += siginfo.h
header-y += signal.h
header-y += socket.h
header-y += sockios.h
header-y += sclp_ctl.h
header-y += stat.h
header-y += statfs.h
header-y += swab.h

24
arch/s390/include/uapi/asm/sclp_ctl.h Normal file
View File

@@ -0,0 +1,24 @@
/*
* IOCTL interface for SCLP
*
* Copyright IBM Corp. 2012
*
* Author: Michael Holzheu <holzheu@linux.vnet.ibm.com>
*/
#ifndef _ASM_SCLP_CTL_H
#define _ASM_SCLP_CTL_H
#include <linux/types.h>
struct sclp_ctl_sccb {
__u32 cmdw;
__u64 sccb;
} __attribute__((packed));
#define SCLP_CTL_IOCTL_MAGIC 0x10
#define SCLP_CTL_SCCB \
_IOWR(SCLP_CTL_IOCTL_MAGIC, 0x10, struct sclp_ctl_sccb)
#endif