[POWERPC] Refactor 64 bits DMA operations

This patch completely refactors DMA operations for 64 bits powerpc. 32 bits
is untouched for now.

We use the new dev_archdata structure to add the dma operations pointer
and associated data to struct device. While at it, we also add the OF node
pointer and numa node. In the future, we might want to look into merging
that with pci_dn as well.

The old vio, pci-iommu and pci-direct DMA ops are gone. They are now replaced
by a set of generic iommu and direct DMA ops (non PCI specific) that can be
used by bus types. The toplevel implementation is now inline.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/include/asm-powerpc/iseries/iommu.h b/include/asm-powerpc/iseries/iommu.h
index 0edbfe10cb37..6e323a13ac30 100644
--- a/include/asm-powerpc/iseries/iommu.h
+++ b/include/asm-powerpc/iseries/iommu.h
@@ -21,11 +21,13 @@
  * Boston, MA  02111-1307  USA
  */
 
+struct pci_dev;
 struct device_node;
 struct iommu_table;
 
 /* Creates table for an individual device node */
-extern void iommu_devnode_init_iSeries(struct device_node *dn);
+extern void iommu_devnode_init_iSeries(struct pci_dev *pdev,
+                                       struct device_node *dn);
 
 /* Get table parameters from HV */
 extern void iommu_table_getparms_iSeries(unsigned long busno,