diff options
| author | Michael Mueller <mimu@linux.vnet.ibm.com> | 2014-03-15 18:16:26 +0100 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2014-05-16 14:57:30 +0200 |
| commit | 570126d370e9c018e603d63272ebcf7340efc05b (patch) | |
| tree | b01ed6c8e29d72f088aa8fa06f48ee0044cb4fac | |
| parent | 4953919feedaeb6d0161ecea920c35d1d1f639d3 (diff) | |
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>
| -rw-r--r-- | arch/s390/include/asm/sclp.h | 1 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 12 |
2 files changed, 12 insertions, 1 deletions
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h index 943d43451116..1aba89b53cb9 100644 --- a/arch/s390/include/asm/sclp.h +++ b/arch/s390/include/asm/sclp.h @@ -66,5 +66,6 @@ int memcpy_hsa(void *dest, unsigned long src, size_t count, int mode); unsigned long sclp_get_hsa_size(void); void sclp_early_detect(void); int sclp_has_siif(void); +unsigned int sclp_get_ibc(void); #endif /* _ASM_S390_SCLP_H */ diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index b57fe0efb422..1918d9dff45d 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 |