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Added iommu_extract() for debug purposes. 

Anyone caught using it for anything other than debug will be shot.
This commit is contained in:
eeh 2001-09-15 06:55:50 +00:00
parent 17d975073d
commit 388726b340
2 changed files with 22 additions and 2 deletions
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21
sys/arch/sparc64/dev/iommu.c
View File

@ -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 @@ iommu_enter(is, va, pa, flags)
(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
*

3
sys/arch/sparc64/dev/iommuvar.h
View File

@ -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_init __P((char *, struct iommu_state *, int, u_int32_t));
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));