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authorMichael Mueller <mimu@linux.vnet.ibm.com>2014-03-15 18:16:26 +0100
committerChristian Borntraeger <borntraeger@de.ibm.com>2014-05-16 14:57:30 +0200
commit570126d370e9c018e603d63272ebcf7340efc05b (patch)
treeb01ed6c8e29d72f088aa8fa06f48ee0044cb4fac /drivers/s390
parent4953919feedaeb6d0161ecea920c35d1d1f639d3 (diff)
downloadop-kernel-dev-570126d370e9c018e603d63272ebcf7340efc05b.zip
op-kernel-dev-570126d370e9c018e603d63272ebcf7340efc05b.tar.gz
s390/sclp: add sclp_get_ibc function
The patch adds functionality to retrieve the IBC configuration by means of function sclp_get_ibc(). Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com> Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/char/sclp_early.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index b57fe0e..1918d9d 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -27,7 +27,9 @@ struct read_info_sccb {
u8 loadparm[8]; /* 24-31 */
u8 _reserved1[48 - 32]; /* 32-47 */
u64 facilities; /* 48-55 */
- u8 _reserved2[84 - 56]; /* 56-83 */
+ u8 _reserved2a[76 - 56]; /* 56-75 */
+ u32 ibc; /* 76-79 */
+ u8 _reserved2b[84 - 80]; /* 80-83 */
u8 fac84; /* 84 */
u8 fac85; /* 85 */
u8 _reserved3[91 - 86]; /* 86-90 */
@@ -47,6 +49,7 @@ static unsigned long sclp_hsa_size;
static unsigned int sclp_max_cpu;
static struct sclp_ipl_info sclp_ipl_info;
static unsigned char sclp_siif;
+static u32 sclp_ibc;
u64 sclp_facilities;
u8 sclp_fac84;
@@ -111,6 +114,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
sclp_rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2;
sclp_rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2;
sclp_rzm <<= 20;
+ sclp_ibc = sccb->ibc;
if (!sccb->hcpua) {
if (MACHINE_IS_VM)
@@ -168,6 +172,12 @@ int sclp_has_siif(void)
}
EXPORT_SYMBOL(sclp_has_siif);
+unsigned int sclp_get_ibc(void)
+{
+ return sclp_ibc;
+}
+EXPORT_SYMBOL(sclp_get_ibc);
+
/*
* This function will be called after sclp_facilities_detect(), which gets
* called from early.c code. The sclp_facilities_detect() function retrieves
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