[src/trunk]: src/sys/arch/sparc64/dev Added iommu_extract() for debug purposes.

[eeh <eeh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e89d0a5a1e93
branches:  trunk
changeset: 514976:e89d0a5a1e93
user:      eeh <eeh%NetBSD.org@localhost>
date:      Sat Sep 15 06:55:50 2001 +0000

description:
Added iommu_extract() for debug purposes.
Anyone caught using it for anything other than debug will be shot.

diffstat:

 sys/arch/sparc64/dev/iommu.c    |  21 ++++++++++++++++++++-
 sys/arch/sparc64/dev/iommuvar.h |   3 ++-
 2 files changed, 22 insertions(+), 2 deletions(-)

diffs (52 lines):

diff -r 46583def4f14 -r e89d0a5a1e93 sys/arch/sparc64/dev/iommu.c
--- a/sys/arch/sparc64/dev/iommu.c      Sat Sep 15 04:50:59 2001 +0000
+++ b/sys/arch/sparc64/dev/iommu.c      Sat Sep 15 06:55:50 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: iommu.c,v 1.38 2001/09/10 21:19:26 chris Exp $ */
+/*     $NetBSD: iommu.c,v 1.39 2001/09/15 06:55:50 eeh Exp $   */
 
 /*
  * Copyright (c) 1999, 2000 Matthew R. Green
@@ -321,6 +321,25 @@
                       (u_long)tte));
 }
 
+
+/*
+ * Find the value of a DVMA address (debug routine).
+ */
+paddr_t
+iommu_extract(is, dva)
+       struct iommu_state *is;
+       vaddr_t dva;
+{
+       int64_t tte = 0;
+       
+       if (dva >= is->is_dvmabase)
+               tte = is->is_tsb[IOTSBSLOT(dva,is->is_tsbsize)];
+
+       if ((tte&IOTTE_V) == 0)
+               return ((paddr_t)-1L);
+       return (tte&IOTTE_PAMASK);
+}
+
 /*
  * iommu_remove: removes mappings created by iommu_enter
  *
diff -r 46583def4f14 -r e89d0a5a1e93 sys/arch/sparc64/dev/iommuvar.h
--- a/sys/arch/sparc64/dev/iommuvar.h   Sat Sep 15 04:50:59 2001 +0000
+++ b/sys/arch/sparc64/dev/iommuvar.h   Sat Sep 15 06:55:50 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: iommuvar.h,v 1.7 2001/07/20 00:07:13 eeh Exp $ */
+/*     $NetBSD: iommuvar.h,v 1.8 2001/09/15 06:55:50 eeh Exp $ */
 
 /*
  * Copyright (c) 1999 Matthew R. Green
@@ -57,6 +57,7 @@
 void   iommu_reset __P((struct iommu_state *));
 void    iommu_enter __P((struct iommu_state *, vaddr_t, int64_t, int));
 void    iommu_remove __P((struct iommu_state *, vaddr_t, size_t));
+paddr_t iommu_extract __P((struct iommu_state *, vaddr_t));
 
 int    iommu_dvmamap_load __P((bus_dma_tag_t, struct iommu_state *,
            bus_dmamap_t, void *, bus_size_t, struct proc *, int));