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Commit ea3c4185 authored by Harald Freudenberger's avatar Harald Freudenberger Committed by Martin Schwidefsky
Browse files

s390/zcrypt: Add ZAPQ inline function. 



Added new inline function ap_pqap_zapq()
which is a C inline function wrapper for
the AP PQAP(ZAPQ) instruction.

Signed-off-by: default avatarHarald Freudenberger <freude@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 7daf201d

drivers/s390/crypto/ap_asm.h

+19 −0
Original line number Diff line number Diff line
@@ -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