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s390/sclp: Diag204 busy indication facility detection

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Detect diag204 busy indication facility.

Acked-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Tobias Huschle <huschle@linux.ibm.com>
Signed-off-by: Mete Durlu <meted@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Mete Durlu 2024-07-04 14:10:04 +02:00 committed by Vasily Gorbik
parent 279a0164e0
commit 7455a33179
2 changed files with 2 additions and 0 deletions
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1
arch/s390/include/asm/sclp.h
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@ -84,6 +84,7 @@ struct sclp_info {
unsigned char has_ibs : 1;
unsigned char has_skey : 1;
unsigned char has_kss : 1;
unsigned char has_diag204_bif : 1;
unsigned char has_gisaf : 1;
unsigned char has_diag318 : 1;
unsigned char has_diag320 : 1;

1
drivers/s390/char/sclp_early.c
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@ -53,6 +53,7 @@ static void __init sclp_early_facilities_detect(void)
get_lowcore()->machine_flags |= MACHINE_FLAG_ESOP;
if (sccb->fac91 & 0x40)
get_lowcore()->machine_flags |= MACHINE_FLAG_TLB_GUEST;
sclp.has_diag204_bif = !!(sccb->fac98 & 0x80);
if (sccb->cpuoff > 134) {
sclp.has_diag318 = !!(sccb->byte_134 & 0x80);
sclp.has_diag320 = !!(sccb->byte_134 & 0x04);