From: Harald Freudenberger <freude@xxxxxxxxxx> Added new inline function ap_pqap_zapq() which is a C inline function wrapper for the AP PQAP(ZAPQ) instruction. Signed-off-by: Harald Freudenberger <freude@xxxxxxxxxx> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx> --- drivers/s390/crypto/ap_asm.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/s390/crypto/ap_asm.h b/drivers/s390/crypto/ap_asm.h index 16b59ce5e01d..b22d30aaf810 100644 --- a/drivers/s390/crypto/ap_asm.h +++ b/drivers/s390/crypto/ap_asm.h @@ -69,6 +69,25 @@ static inline struct ap_queue_status ap_rapq(ap_qid_t qid) return reg1; } +/** + * ap_pqap_zapq(): Reset and zeroize adjunct processor queue. + * @qid: The AP queue number + * + * Returns AP queue status structure. + */ +static inline struct ap_queue_status ap_zapq(ap_qid_t qid) +{ + register unsigned long reg0 asm ("0") = qid | (2UL << 24); + register struct ap_queue_status reg1 asm ("1"); + + asm volatile( + ".long 0xb2af0000" /* PQAP(ZAPQ) */ + : "=d" (reg1) + : "d" (reg0) + : "cc"); + return reg1; +} + /** * ap_aqic(): Control interruption for a specific AP. * @qid: The AP queue number -- 2.17.0 -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html