From 2b071886170df456e230c38a3e504da4a11fff79 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Tue, 21 Jun 2005 17:16:31 -0700 Subject: [PATCH] s390: pending interrupt after ipl from reader Wait for interrupt and clear status pending after resetting the reader. Signed-off-by: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/s390/kernel/head.S | 19 +++++++++++++++++-- arch/s390/kernel/head64.S | 19 +++++++++++++++++-- 2 files changed, 34 insertions(+), 4 deletions(-) (limited to 'arch/s390/kernel') diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index 658e8de74f8..fc8bf5e285f 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -345,10 +345,25 @@ iplstart: bno .Lnoreset la %r2,.Lreset lhi %r3,26 - .long 0x83230008 + diag %r2,%r3,8 + mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw +.Lwaitrdrirq: + lpsw .Lrdrwaitpsw +.Lrdrint: + c %r1,0xb8 # compare subchannel number + bne .Lwaitrdrirq + la %r5,.Lirb + tsch 0(%r5) .Lnoreset: + b .Lnoload + + .align 8 +.Lrdrnewpsw: + .long 0x00080000,0x80000000+.Lrdrint +.Lrdrwaitpsw: + .long 0x020a0000,0x80000000+.Lrdrint #endif - + # # everything loaded, go for it # diff --git a/arch/s390/kernel/head64.S b/arch/s390/kernel/head64.S index 8e2caf9dc18..f525c0c2125 100644 --- a/arch/s390/kernel/head64.S +++ b/arch/s390/kernel/head64.S @@ -344,10 +344,25 @@ iplstart: bno .Lnoreset la %r2,.Lreset lhi %r3,26 - .long 0x83230008 + diag %r2,%r3,8 + mvc 0x78(8),.Lrdrnewpsw # set up IO interrupt psw +.Lwaitrdrirq: + lpsw .Lrdrwaitpsw +.Lrdrint: + c %r1,0xb8 # compare subchannel number + bne .Lwaitrdrirq + la %r5,.Lirb + tsch 0(%r5) .Lnoreset: + b .Lnoload + + .align 8 +.Lrdrnewpsw: + .long 0x00080000,0x80000000+.Lrdrint +.Lrdrwaitpsw: + .long 0x020a0000,0x80000000+.Lrdrint #endif - + # # everything loaded, go for it # -- cgit v1.2.3