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authorJohannes Berg <johannes@sipsolutions.net>2007-05-03 22:28:32 +1000
committerPaul Mackerras <paulus@samba.org>2007-05-07 20:31:14 +1000
commit7e11580b362fc64693de7ad5c11fbf3d1d9d0e50 (patch)
tree8f1c12a24bec21ce5a5912f6b75d58c1ffc1ddd0 /include/asm-powerpc
parent55b61fec22caa3e7872caea6c4100fc75cb8f49b (diff)
[POWERPC] DART iommu suspend
This implements save and restore hooks for IOMMUs and implements it the DART iommu. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/iommu.h14
-rw-r--r--include/asm-powerpc/machdep.h5
2 files changed, 19 insertions, 0 deletions
diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h
index b2e56b30306..870967e4720 100644
--- a/include/asm-powerpc/iommu.h
+++ b/include/asm-powerpc/iommu.h
@@ -26,6 +26,7 @@
#include <linux/spinlock.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
+#include <asm/machdep.h>
#include <asm/types.h>
#include <asm/bitops.h>
@@ -109,6 +110,19 @@ static inline void pci_iommu_init(void) { }
#endif
extern void alloc_dart_table(void);
+#if defined(CONFIG_PPC64) && defined(CONFIG_PM)
+static inline void iommu_save(void)
+{
+ if (ppc_md.iommu_save)
+ ppc_md.iommu_save();
+}
+
+static inline void iommu_restore(void)
+{
+ if (ppc_md.iommu_restore)
+ ppc_md.iommu_restore();
+}
+#endif
#endif /* __KERNEL__ */
#endif /* _ASM_IOMMU_H */
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index bbd17d0e170..6fdabd6dfb3 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -91,6 +91,11 @@ struct machdep_calls {
void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size,
unsigned long flags);
void (*iounmap)(volatile void __iomem *token);
+
+#ifdef CONFIG_PM
+ void (*iommu_save)(void);
+ void (*iommu_restore)(void);
+#endif
#endif /* CONFIG_PPC64 */
int (*probe)(void);