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s390/cio: Introduce generic synchronous CHSC IOCTL

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This patch adds a new ioctl CHSC_START_SYNC that allows to
execute any synchronous CHSC that is provided by user space.

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 09:44:28 +02:00
committed by Martin Schwidefsky
parent 80b054ba2a
commit 64150adf89
3 changed files with 46 additions and 7 deletions
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11
arch/s390/include/uapi/asm/chsc.h
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@@ -29,6 +29,16 @@ struct chsc_async_area {
__u8 data[CHSC_SIZE - sizeof(struct chsc_async_header)];
} __attribute__ ((packed));
struct chsc_header {
__u16 length;
__u16 code;
} __attribute__ ((packed));
struct chsc_sync_area {
struct chsc_header header;
__u8 data[CHSC_SIZE - sizeof(struct chsc_header)];
} __attribute__ ((packed));
struct chsc_response_struct {
__u16 length;
__u16 code;
@@ -126,5 +136,6 @@ struct chsc_cpd_info {
#define CHSC_INFO_CCL _IOWR(CHSC_IOCTL_MAGIC, 0x86, struct chsc_comp_list)
#define CHSC_INFO_CPD _IOWR(CHSC_IOCTL_MAGIC, 0x87, struct chsc_cpd_info)
#define CHSC_INFO_DCAL _IOWR(CHSC_IOCTL_MAGIC, 0x88, struct chsc_dcal)
#define CHSC_START_SYNC _IOWR(CHSC_IOCTL_MAGIC, 0x89, struct chsc_sync_area)
#endif