Commit 0a9fddfa authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
Browse files

s390/sclp: detect DIRQ facility 



Detect the adapter CPU directed interruption facility.

Signed-off-by: default avatarSebastian Ott <sebott@linux.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent c840927c

arch/s390/include/asm/sclp.h

+1 −0
Original line number Diff line number Diff line
@@ -81,6 +81,7 @@ struct sclp_info { 
	unsigned char has_diag318 : 1;

	unsigned char has_sipl : 1;

	unsigned char has_sipl_g2 : 1;

	unsigned char has_dirq : 1;

	unsigned int ibc;

	unsigned int mtid;

	unsigned int mtid_cp;

drivers/s390/char/sclp.h

+1 −1
Original line number Diff line number Diff line
@@ -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);

drivers/s390/char/sclp_early.c

+1 −0
Original line number Diff line number Diff line
@@ -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);

}



/*

CRA Git | Maintained and supported by SUSTech CRA and CCSE