Genericizing iova.[ch]

I would like to potentially move the sparc64 IOMMU code over to using
the nice new drivers/pci/iova.[ch] code for free area management..

In order to do that we have to detach the IOMMU page size assumptions
which only really need to exist in the intel-iommu.[ch] code.

This patch attempts to implement that.

[akpm@linux-foundation.org: build fix]
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index 91b2dc9..8ed2648 100644 (file)
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -26,6 +26,7 @@
 #include <linux/pci.h>
 #include <linux/dmar.h>
 #include "iova.h"
+#include "intel-iommu.h"
 
 #undef PREFIX
 #define PREFIX "DMAR:"

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 4e01df9..31fa6c9 100644 (file)
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -1088,7 +1088,7 @@ static void dmar_init_reserved_ranges(void)
        int i;
        u64 addr, size;
 
-       init_iova_domain(&reserved_iova_list);
+       init_iova_domain(&reserved_iova_list, DMA_32BIT_PFN);
 
        /* IOAPIC ranges shouldn't be accessed by DMA */
        iova = reserve_iova(&reserved_iova_list, IOVA_PFN(IOAPIC_RANGE_START),
@@ -1142,7 +1142,7 @@ static int domain_init(struct dmar_domain *domain, int guest_width)
        int adjust_width, agaw;
        unsigned long sagaw;
 
-       init_iova_domain(&domain->iovad);
+       init_iova_domain(&domain->iovad, DMA_32BIT_PFN);
        spin_lock_init(&domain->mapping_lock);
 
        domain_reserve_special_ranges(domain);

diff --cc drivers/pci/intel-iommu.h
Simple merge

diff --cc drivers/pci/iova.c
Simple merge

diff --cc drivers/pci/iova.h
Simple merge