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OpenCloudOS-Kernel
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[PATCH] s390: pending interrupt after ipl from reader 

Wait for interrupt and clear status pending after resetting the reader.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Heiko Carstens 2005-06-21 17:16:31 -07:00 committed by Linus Torvalds
parent e9b9a04796
commit 2b07188617
2 changed files with 34 additions and 4 deletions
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19
arch/s390/kernel/head.S
View File

@ -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
#

19
arch/s390/kernel/head64.S
View File

@ -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
#