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| author | Sebastian Ott <sebott@linux.ibm.com> | 2019-02-12 12:37:50 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-04-29 10:47:01 +0200 |
| commit | 0a9fddfaa8ea0f66564329ce89390c8dd38b2df0 (patch) | |
| tree | 736ac8c669d5c5163b9001df3eacdc180a15addb /drivers/s390/char | |
| parent | c840927cf5f24d080236775e4c3a934e778069f5 (diff) | |
| download | linux-0a9fddfaa8ea0f66564329ce89390c8dd38b2df0.tar.gz linux-0a9fddfaa8ea0f66564329ce89390c8dd38b2df0.tar.bz2 linux-0a9fddfaa8ea0f66564329ce89390c8dd38b2df0.zip | |
s390/sclp: detect DIRQ facility
Detect the adapter CPU directed interruption facility.
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/char')
| -rw-r--r-- | drivers/s390/char/sclp.h | 2 | ||||
| -rw-r--r-- | drivers/s390/char/sclp_early.c | 1 |
2 files changed, 2 insertions, 1 deletions
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h index 287382dc21c5..043f32ba3749 100644 --- a/drivers/s390/char/sclp.h +++ b/drivers/s390/char/sclp.h @@ -197,7 +197,7 @@ struct read_info_sccb { u32 hmfai; /* 124-127 */ u8 _pad_128[134 - 128]; /* 128-133 */ u8 byte_134; /* 134 */ - u8 _pad_135; /* 135 */ + u8 cpudirq; /* 135 */ u16 cbl; /* 136-137 */ u8 _pad_138[4096 - 138]; /* 138-4095 */ } __packed __aligned(PAGE_SIZE); diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index dae9de3d7c96..fdad2a980129 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -95,6 +95,7 @@ static void __init sclp_early_facilities_detect(struct read_info_sccb *sccb) sclp.mtid_prev = (sccb->fac42 & 0x80) ? (sccb->fac66 & 31) : 0; sclp.hmfai = sccb->hmfai; + sclp.has_dirq = !!(sccb->cpudirq & 0x80); } /* |