[Xen-devel] linux-next: manual merge of the xen-tip tree with the arm tree

[Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>]

Hi all,

Today's linux-next merge of the xen-tip tree got a conflict in
arch/arm/include/asm/dma-mapping.h between commit 6a6a5c15d871 ("ARM:
7805/1: mm: change max*pfn to include the physical offset of memory")
from the arm tree and commit e24b7aa368a0 ("arm: make SWIOTLB available")
from the xen-tip tree.

I fixed it up (see below) and can carry the fix as necessary (no action
is required).

-- 
Cheers,
Stephen Rothwell                    sfr@xxxxxxxxxxxxxxxx

diff --cc arch/arm/include/asm/dma-mapping.h
index 863cd84eb1a2,8acfef48124a..000000000000
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@@ -87,13 -97,39 +98,46 @@@ static inline dma_addr_t virt_to_dma(st
  }
  #endif
  
+ static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
+ {
+       unsigned int offset = paddr & ~PAGE_MASK;
+       return pfn_to_dma(dev, __phys_to_pfn(paddr)) + offset;
+ }
+ 
+ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t dev_addr)
+ {
+       unsigned int offset = dev_addr & ~PAGE_MASK;
+       return __pfn_to_phys(dma_to_pfn(dev, dev_addr)) + offset;
+ }
+ 
+ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t 
size)
+ {
+       u64 limit, mask;
+ 
+       if (!dev->dma_mask)
+               return 0;
+ 
+       mask = *dev->dma_mask;
+ 
+       limit = (mask + 1) & ~mask;
+       if (limit && size > limit)
+               return 0;
+ 
+       if ((addr | (addr + size - 1)) & ~mask)
+               return 0;
+ 
+       return 1;
+ }
+ 
+ static inline void dma_mark_clean(void *addr, size_t size) { }
+ 
 +/* The ARM override for dma_max_pfn() */
 +static inline unsigned long dma_max_pfn(struct device *dev)
 +{
 +      return PHYS_PFN_OFFSET + dma_to_pfn(dev, *dev->dma_mask);
 +}
 +#define dma_max_pfn(dev) dma_max_pfn(dev)
 +
  /*
   * DMA errors are defined by all-bits-set in the DMA address.
   */

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