9d92a7e1b0
This patch adds a driver for subchannels of type chsc. A device /dev/chsc is created which may be used to issue ioctls to: - obtain information about the machine's I/O configuration - dynamically change the machine's I/O configuration via asynchronous chsc commands Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
26 lines
743 B
C
26 lines
743 B
C
#ifndef _ASM_S390_ISC_H
|
|
#define _ASM_S390_ISC_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* I/O interruption subclasses used by drivers.
|
|
* Please add all used iscs here so that it is possible to distribute
|
|
* isc usage between drivers.
|
|
* Reminder: 0 is highest priority, 7 lowest.
|
|
*/
|
|
#define MAX_ISC 7
|
|
|
|
/* Regular I/O interrupts. */
|
|
#define IO_SCH_ISC 3 /* regular I/O subchannels */
|
|
#define CONSOLE_ISC 1 /* console I/O subchannel */
|
|
#define CHSC_SCH_ISC 7 /* CHSC subchannels */
|
|
/* Adapter interrupts. */
|
|
#define QDIO_AIRQ_ISC IO_SCH_ISC /* I/O subchannel in qdio mode */
|
|
|
|
/* Functions for registration of I/O interruption subclasses */
|
|
void isc_register(unsigned int isc);
|
|
void isc_unregister(unsigned int isc);
|
|
|
|
#endif /* _ASM_S390_ISC_H */
|