[IA64] make swiotlb use bus_to_virt/virt_to_bus

Convert all phys_to_virt/virt_to_phys uses to bus_to_virt/virt_to_bus, as is
what is meant and what is needed in (at least) some virtualized environments
like Xen.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 17 insertions, 16 deletions

diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 34278338aad..bc684d1fd42 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -36,7 +36,7 @@
                            ( (val) & ( (align) - 1)))
 
 #define SG_ENT_VIRT_ADDRESS(sg) (page_address((sg)->page) + (sg)->offset)
-#define SG_ENT_PHYS_ADDRESS(SG) virt_to_phys(SG_ENT_VIRT_ADDRESS(SG))
+#define SG_ENT_PHYS_ADDRESS(sg) virt_to_bus(SG_ENT_VIRT_ADDRESS(sg))
 
 /*
  * Maximum allowable number of contiguous slabs to map,
@@ -163,7 +163,7 @@ swiotlb_init_with_default_size (size_t default_size)
          */
         io_tlb_overflow_buffer = alloc_bootmem_low(io_tlb_overflow);
         printk(KERN_INFO "Placing software IO TLB between 0x%lx - 0x%lx\n",
-               virt_to_phys(io_tlb_start), virt_to_phys(io_tlb_end));
+               virt_to_bus(io_tlb_start), virt_to_bus(io_tlb_end));
 }
 
 void
@@ -244,7 +244,7 @@ swiotlb_late_init_with_default_size (size_t default_size)
 
         printk(KERN_INFO "Placing %ldMB software IO TLB between 0x%lx - "
                "0x%lx\n", (io_tlb_nslabs * (1 << IO_TLB_SHIFT)) >> 20,
-               virt_to_phys(io_tlb_start), virt_to_phys(io_tlb_end));
+               virt_to_bus(io_tlb_start), virt_to_bus(io_tlb_end));
 
         return 0;
 
@@ -445,7 +445,7 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
         flags |= GFP_DMA;
 
         ret = (void *)__get_free_pages(flags, order);
-        if (ret && address_needs_mapping(hwdev, virt_to_phys(ret))) {
+        if (ret && address_needs_mapping(hwdev, virt_to_bus(ret))) {
                 /*
                  * The allocated memory isn't reachable by the device.
                  * Fall back on swiotlb_map_single().
@@ -465,11 +465,11 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
                 if (swiotlb_dma_mapping_error(handle))
                         return NULL;
 
-                ret = phys_to_virt(handle);
+                ret = bus_to_virt(handle);
         }
 
         memset(ret, 0, size);
-        dev_addr = virt_to_phys(ret);
+        dev_addr = virt_to_bus(ret);
 
         /* Confirm address can be DMA'd by device */
         if (address_needs_mapping(hwdev, dev_addr)) {
@@ -525,7 +525,7 @@ swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
 dma_addr_t
 swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
 {
-        unsigned long dev_addr = virt_to_phys(ptr);
+        unsigned long dev_addr = virt_to_bus(ptr);
         void *map;
 
         BUG_ON(dir == DMA_NONE);
@@ -546,7 +546,7 @@ swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
                 map = io_tlb_overflow_buffer;
         }
 
-        dev_addr = virt_to_phys(map);
+        dev_addr = virt_to_bus(map);
 
         /*
          * Ensure that the address returned is DMA'ble
@@ -569,7 +569,7 @@ void
 swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
                      int dir)
 {
-        char *dma_addr = phys_to_virt(dev_addr);
+        char *dma_addr = bus_to_virt(dev_addr);
 
         BUG_ON(dir == DMA_NONE);
         if (dma_addr >= io_tlb_start && dma_addr < io_tlb_end)
@@ -592,7 +592,7 @@ static inline void
 swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr,
                     size_t size, int dir, int target)
 {
-        char *dma_addr = phys_to_virt(dev_addr);
+        char *dma_addr = bus_to_virt(dev_addr);
 
         BUG_ON(dir == DMA_NONE);
         if (dma_addr >= io_tlb_start && dma_addr < io_tlb_end)
@@ -623,7 +623,7 @@ swiotlb_sync_single_range(struct device *hwdev, dma_addr_t dev_addr,
                           unsigned long offset, size_t size,
                           int dir, int target)
 {
-        char *dma_addr = phys_to_virt(dev_addr) + offset;
+        char *dma_addr = bus_to_virt(dev_addr) + offset;
 
         BUG_ON(dir == DMA_NONE);
         if (dma_addr >= io_tlb_start && dma_addr < io_tlb_end)
@@ -676,7 +676,7 @@ swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
 
         for (i = 0; i < nelems; i++, sg++) {
                 addr = SG_ENT_VIRT_ADDRESS(sg);
-                dev_addr = virt_to_phys(addr);
+                dev_addr = virt_to_bus(addr);
                 if (swiotlb_force || address_needs_mapping(hwdev, dev_addr)) {
                         void *map = map_single(hwdev, addr, sg->length, dir);
                         if (!map) {
@@ -709,7 +709,8 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems,
 
         for (i = 0; i < nelems; i++, sg++)
                 if (sg->dma_address != SG_ENT_PHYS_ADDRESS(sg))
-                        unmap_single(hwdev, (void *) phys_to_virt(sg->dma_address), sg->dma_length, dir);
+                        unmap_single(hwdev, bus_to_virt(sg->dma_address),
+                                     sg->dma_length, dir);
                 else if (dir == DMA_FROM_DEVICE)
                         dma_mark_clean(SG_ENT_VIRT_ADDRESS(sg), sg->dma_length);
 }
@@ -731,7 +732,7 @@ swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sg,
 
         for (i = 0; i < nelems; i++, sg++)
                 if (sg->dma_address != SG_ENT_PHYS_ADDRESS(sg))
-                        sync_single(hwdev, (void *) sg->dma_address,
+                        sync_single(hwdev, bus_to_virt(sg->dma_address),
                                     sg->dma_length, dir, target);
                 else if (dir == DMA_FROM_DEVICE)
                         dma_mark_clean(SG_ENT_VIRT_ADDRESS(sg), sg->dma_length);
@@ -754,7 +755,7 @@ swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
 int
 swiotlb_dma_mapping_error(dma_addr_t dma_addr)
 {
-        return (dma_addr == virt_to_phys(io_tlb_overflow_buffer));
+        return (dma_addr == virt_to_bus(io_tlb_overflow_buffer));
 }
 
 /*
@@ -766,7 +767,7 @@ swiotlb_dma_mapping_error(dma_addr_t dma_addr)
 int
 swiotlb_dma_supported (struct device *hwdev, u64 mask)
 {
-        return virt_to_phys(io_tlb_end - 1) <= mask;
+        return virt_to_bus(io_tlb_end - 1) <= mask;
 }
 
 EXPORT_SYMBOL(swiotlb_init);