[PATCH v5 04/21] s390/sclp: detect the AISI facility

Matthew Rosato
2022-04-04T21:27:55Z

Detect the Adapter Interruption Suppression Interpretation facility.

Reviewed-by: Eric Farman <farman@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
---
arch/s390/include/asm/sclp.h | 1 +
drivers/s390/char/sclp_early.c | 1 +
2 files changed, 2 insertions(+)

diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h
index ff359df62154..bdd365407176 100644
--- a/arch/s390/include/asm/sclp.h
+++ b/arch/s390/include/asm/sclp.h
@@ -90,6 +90,7 @@ struct sclp_info {
unsigned char has_zpci_lsi : 1;
unsigned char has_aisii : 1;
unsigned char has_aeni : 1;
+ unsigned char has_aisi : 1;
unsigned int ibc;
unsigned int mtid;
unsigned int mtid_cp;
diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c
index e9af01b4c97a..c13e55cc4a5d 100644
--- a/drivers/s390/char/sclp_early.c
+++ b/drivers/s390/char/sclp_early.c
@@ -47,6 +47,7 @@ static void __init sclp_early_facilities_detect(void)
sclp.has_kss = !!(sccb->fac98 & 0x01);
sclp.has_aisii = !!(sccb->fac118 & 0x40);
sclp.has_aeni = !!(sccb->fac118 & 0x20);
+ sclp.has_aisi = !!(sccb->fac118 & 0x10);
sclp.has_zpci_lsi = !!(sccb->fac118 & 0x01);
if (sccb->fac85 & 0x02)
S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;
--
2.27.0