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authorHeiko Carstens <heiko.carstens@de.ibm.com>2005-06-21 17:16:31 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-21 19:07:34 -0700
commit2b071886170df456e230c38a3e504da4a11fff79 (patch)
tree0031ea86de067846c22d15c35bd78d611f61edb7 /arch/s390
parente9b9a04796eade5241452a913ec6f3433437b4f5 (diff)
[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>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/kernel/head.S19
-rw-r--r--arch/s390/kernel/head64.S19
2 files changed, 34 insertions, 4 deletions
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index 658e8de74f88..fc8bf5e285f6 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 8e2caf9dc185..f525c0c21250 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
#