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| author | Harald Freudenberger <freude@linux.ibm.com> | 2019-06-05 07:19:54 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2019-06-07 10:09:55 +0200 |
| commit | e1ab11012e1cc981b43219580e010a20ec8df7d8 (patch) | |
| tree | f213ee44fae33e68d4699489f20eb750f715530d /drivers/s390/crypto | |
| parent | s390: fix unrecognized __aligned() in uapi header (diff) | |
| download | linux-e1ab11012e1cc981b43219580e010a20ec8df7d8.tar.xz linux-e1ab11012e1cc981b43219580e010a20ec8df7d8.zip | |
s390/zcrypt: support special flagged EP11 cprbs
Within an EP11 cprb there exists a byte field flags. Bit 0x20
of this field indicates a special cprb. A special cprb triggers
special handling in the firmware below the OS layer.
However, a special cprb also needs to have the S bit in GPR0
set when NQAP is called. This was not the case for EP11 cprbs
and this patch now introduces the code to support this.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto')
| -rw-r--r-- | drivers/s390/crypto/zcrypt_msgtype6.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/crypto/zcrypt_msgtype6.c b/drivers/s390/crypto/zcrypt_msgtype6.c index 0cbcc238ef98..12fe9deb265e 100644 --- a/drivers/s390/crypto/zcrypt_msgtype6.c +++ b/drivers/s390/crypto/zcrypt_msgtype6.c @@ -567,6 +567,10 @@ static int xcrb_msg_to_type6_ep11cprb_msgx(struct ap_message *ap_msg, payload_hdr = (struct pld_hdr *)((&(msg->pld_lenfmt))+lfmt); *fcode = payload_hdr->func_val & 0xFFFF; + /* enable special processing based on the cprbs flags special bit */ + if (msg->cprbx.flags & 0x20) + ap_msg->special = 1; + return 0; } |