[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>
git-mirror · Jun 22, 2005 · 2b07188 · 2b07188
1 parent e9b9a04
commit 2b07188
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Showing 2 changed files with 34 additions and 4 deletions.
diff --git 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
@@ -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
 #