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authorMichael Holzheu <holzheu@linux.vnet.ibm.com>2013-06-06 09:44:28 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2013-06-26 21:10:10 +0200
commit64150adf89df2ed165d6760f414fa6df07d22628 (patch)
treefaacbf1ffd1daf2aa370d2b4880b8b093ac2966f /arch/s390
parent80b054ba2ab1c46e6c34c6a54f542d8f7ad77fca (diff)
s390/cio: Introduce generic synchronous CHSC IOCTL
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>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/uapi/asm/chsc.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/s390/include/uapi/asm/chsc.h b/arch/s390/include/uapi/asm/chsc.h
index 1c6a7f85a581..6e5307fbeb1e 100644
--- a/arch/s390/include/uapi/asm/chsc.h
+++ b/arch/s390/include/uapi/asm/chsc.h
@@ -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