swiotlb: range_needs_mapping should take a physical address.
The swiotlb_arch_range_needs_mapping() hook should take a physical
address rather than a virtual address in order to support highmem pages.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 30fe65e..31bae40 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -145,7 +145,7 @@
return phys_to_virt(swiotlb_bus_to_phys(address));
}
-int __weak swiotlb_arch_range_needs_mapping(void *ptr, size_t size)
+int __weak swiotlb_arch_range_needs_mapping(phys_addr_t paddr, size_t size)
{
return 0;
}
@@ -315,9 +315,9 @@
return !is_buffer_dma_capable(dma_get_mask(hwdev), addr, size);
}
-static inline int range_needs_mapping(void *ptr, size_t size)
+static inline int range_needs_mapping(phys_addr_t paddr, size_t size)
{
- return swiotlb_force || swiotlb_arch_range_needs_mapping(ptr, size);
+ return swiotlb_force || swiotlb_arch_range_needs_mapping(paddr, size);
}
static int is_swiotlb_buffer(char *addr)
@@ -653,7 +653,7 @@
* buffering it.
*/
if (!address_needs_mapping(dev, dev_addr, size) &&
- !range_needs_mapping(ptr, size))
+ !range_needs_mapping(virt_to_phys(ptr), size))
return dev_addr;
/*
@@ -804,7 +804,7 @@
void *addr = sg_virt(sg);
dma_addr_t dev_addr = swiotlb_virt_to_bus(hwdev, addr);
- if (range_needs_mapping(addr, sg->length) ||
+ if (range_needs_mapping(sg_phys(sg), sg->length) ||
address_needs_mapping(hwdev, dev_addr, sg->length)) {
void *map = map_single(hwdev, sg_phys(sg),
sg->length, dir);