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>

diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h
index b0e67414c4925514bdbc04d22e10b650e588c0a9..addefe8ccdba5a432bc7afccc589846ed250118d 100644 (file)
--- 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 aefdf0b17dbe09ab94a7690c26d3dd4b28b0861a..d15b0d541de36cedd31708f3723c5c95a87469ec 100644 (file)
--- 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;