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| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2014-10-14 12:11:02 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2015-01-23 13:25:35 +0100 |
| commit | d614be05c8b73033fa141c2f4559c117578b9171 (patch) | |
| tree | 626955f3dc327e7f7454210741b16948a8b5af94 | |
| parent | a3a9c59a683658d881aa2695be2aa875598f2712 (diff) | |
| download | op-kernel-dev-d614be05c8b73033fa141c2f4559c117578b9171.zip op-kernel-dev-d614be05c8b73033fa141c2f4559c117578b9171.tar.gz | |
s390/sclp: introduce check for the SIGP Interpretation Facility
This patch introduces the infrastructure to check whether the SIGP
Interpretation Facility is installed on all VCPUs in the configuration.
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
| -rw-r--r-- | arch/s390/include/asm/sclp.h | 4 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 8 |
2 files changed, 11 insertions, 1 deletions
diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h index 1aba89b..425e6cc 100644 --- a/arch/s390/include/asm/sclp.h +++ b/arch/s390/include/asm/sclp.h @@ -31,7 +31,8 @@ struct sclp_cpu_entry { u8 reserved0[2]; u8 : 3; u8 siif : 1; - u8 : 4; + u8 sigpif : 1; + u8 : 3; u8 reserved2[10]; u8 type; u8 reserved1; @@ -66,6 +67,7 @@ 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); +int sclp_has_sigpif(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 5bd6cb1..b8a5bf5 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -49,6 +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 unsigned char sclp_sigpif; static u32 sclp_ibc; u64 sclp_facilities; @@ -131,6 +132,7 @@ static void __init sclp_facilities_detect(struct read_info_sccb *sccb) if (boot_cpu_address != cpue->address) continue; sclp_siif = cpue->siif; + sclp_sigpif = cpue->sigpif; break; } @@ -172,6 +174,12 @@ int sclp_has_siif(void) } EXPORT_SYMBOL(sclp_has_siif); +int sclp_has_sigpif(void) +{ + return sclp_sigpif; +} +EXPORT_SYMBOL(sclp_has_sigpif); + unsigned int sclp_get_ibc(void) { return sclp_ibc; |
