diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2009-02-27 05:17:54 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2009-02-27 05:17:54 +0000 |
| commit | 2bfe70d4f3adbeab269c9655d2272d6bd458eb03 (patch) | |
| tree | e48b7f4cea8810ac23c42fa8ac424de766195bd7 /sys/arch | |
| parent | 6beb1879e075daafedf86bade47367ed34c0c4d6 (diff) | |
Be a bin more paranoid in m88410_inval() in the operation complete check.
ok deraadt@
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/mvme88k/mvme88k/m88410.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/arch/mvme88k/mvme88k/m88410.c b/sys/arch/mvme88k/mvme88k/m88410.c index 6501b77d094..1b5217a0b8f 100644 --- a/sys/arch/mvme88k/mvme88k/m88410.c +++ b/sys/arch/mvme88k/mvme88k/m88410.c @@ -1,4 +1,4 @@ -/* $OpenBSD: m88410.c,v 1.3 2007/12/02 21:25:01 miod Exp $ */ +/* $OpenBSD: m88410.c,v 1.4 2009/02/27 05:17:53 miod Exp $ */ /* * Copyright (c) 2001 Steve Murphree, Jr. * All rights reserved. @@ -49,7 +49,7 @@ /* * Flush physical page number (specified in the low 20 bits of the - * address. + * address). */ #define XCC_FLUSH_PAGE 0x01 /* @@ -164,6 +164,10 @@ mc88410_inval(void) */ dummy = *(volatile u_int32_t *)(BS_BASE + BS_XCCR); + /* just in case it didn't, spin until the operation is complete */ + while ((*(volatile u_int32_t *)(BS_BASE + BS_XCCR) & BS_XCC_FBSY) != 0) + ; + *(volatile u_int16_t *)(BS_BASE + BS_GCSR) = bs_gcsr; *(volatile u_int16_t *)(BS_BASE + BS_ROMCR) = bs_romcr; } |