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[POWERPC] Cell iommu support

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This patch adds full cell iommu support (and iommu disabled mode).

It implements mapping/unmapping of iommu pages on demand using the
standard powerpc iommu framework.  It also supports running with
iommu disabled for machines with less than 2GB of memory.  (The
default is off in that case, though it can be forced on with the
kernel command line option iommu=force).

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Jeremy Kerr 2006-11-11 17:25:18 +11:00 • committed by Paul Mackerras
parent acfd946a1a
commit 165785e5c0
6 changed files with 676 additions and 488 deletions
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3
arch/powerpc/sysdev/dart_iommu.c
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@ -48,9 +48,6 @@
#include "dart.h"
extern int iommu_is_off;
extern int iommu_force_on;
/* Physical base address and size of the DART table */
unsigned long dart_tablebase; /* exported to htab_initialize */
static unsigned long dart_tablesize;