From b05a870c5e4e6a113b7f3fb61b5fa0869e40dd30 Mon Sep 17 00:00:00 2001
From: Matthew Rosato <mjrosato@linux.ibm.com>
Date: Mon, 6 Jun 2022 16:33:08 -0400
Subject: [PATCH] s390/sclp: detect the AISI facility
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>
Link: https://lore.kernel.org/r/20220606203325.110625-5-mjrosato@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@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 b0e67414c4925..addefe8ccdba5 100644
--- a/arch/s390/include/asm/sclp.h
+++ b/arch/s390/include/asm/sclp.h
@@ -91,6 +91,7 @@ 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 aefdf0b17dbe0..d15b0d541de36 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;
--
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