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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2008-07-14 09:58:56 +0200
committerHeiko Carstens <heiko.carstens@de.ibm.com>2008-07-14 10:02:09 +0200
commitd2fec595511b5718bdb65645b3d5d99800d97943 (patch)
treea94c3560fc2ad6aa89d61d646f73f4d7c1dfcc9b /drivers/s390/cio/chsc.c
parent761cdf6aacdb76f819050f4938cdab1f4cdcb945 (diff)
[S390] stp support.
Add support for clock synchronization with the server time protocol. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/chsc.c')
-rw-r--r--drivers/s390/cio/chsc.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index cb36f792978..62b0b16fe3d 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -874,3 +874,52 @@ exit:
EXPORT_SYMBOL_GPL(css_general_characteristics);
EXPORT_SYMBOL_GPL(css_chsc_characteristics);
+
+int chsc_sstpc(void *page, unsigned int op, u16 ctrl)
+{
+ struct {
+ struct chsc_header request;
+ unsigned int rsvd0;
+ unsigned int op : 8;
+ unsigned int rsvd1 : 8;
+ unsigned int ctrl : 16;
+ unsigned int rsvd2[5];
+ struct chsc_header response;
+ unsigned int rsvd3[7];
+ } __attribute__ ((packed)) *rr;
+ int rc;
+
+ memset(page, 0, PAGE_SIZE);
+ rr = page;
+ rr->request.length = 0x0020;
+ rr->request.code = 0x0033;
+ rr->op = op;
+ rr->ctrl = ctrl;
+ rc = chsc(rr);
+ if (rc)
+ return -EIO;
+ rc = (rr->response.code == 0x0001) ? 0 : -EIO;
+ return rc;
+}
+
+int chsc_sstpi(void *page, void *result, size_t size)
+{
+ struct {
+ struct chsc_header request;
+ unsigned int rsvd0[3];
+ struct chsc_header response;
+ char data[size];
+ } __attribute__ ((packed)) *rr;
+ int rc;
+
+ memset(page, 0, PAGE_SIZE);
+ rr = page;
+ rr->request.length = 0x0010;
+ rr->request.code = 0x0038;
+ rc = chsc(rr);
+ if (rc)
+ return -EIO;
+ memcpy(result, &rr->data, size);
+ return (rr->response.code == 0x0001) ? 0 : -EIO;
+}
+