[IA64] make swiotlb use bus_to_virt/virt_to_bus
Jan Beulich [Tue, 6 Feb 2007 02:49:45 +0000 (18:49 -0800)]
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>

lib/swiotlb.c

index 3427833..bc684d1 100644 (file)
@@ -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);