iommu: parisc: pass struct device to iommu_alloc_range

This adds struct device argument to sba_alloc_range and ccio_alloc_range, a
preparation for modifications to fix the IOMMU segment boundary problem. This
change enables ccio_alloc_range to access to LLD's segment boundary limits.

[[e-mail]: coding-style fixes]
Signed-off-by: FUJITA Tomonori <[e-mail]>
Cc: Kyle McMartin <[e-mail]>
Cc: Matthew Wilcox <[e-mail]>
Cc: Grant Grundler <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/parisc/ccio-dma.c

···
  * of available pages for the requested size.
  */
 static int
-ccio_alloc_range(struct ioc *ioc, size_t size)
+ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
 {
 	unsigned int pages_needed = size >> IOVP_SHIFT;
 	unsigned int res_idx;
···
 	ioc->msingle_pages += size >> IOVP_SHIFT;
 #endif
 
-	idx = ccio_alloc_range(ioc, size);
+	idx = ccio_alloc_range(ioc, dev, size);
 	iovp = (dma_addr_t)MKIOVP(idx);
 
 	pdir_start = &(ioc->pdir_base[idx]);

drivers/parisc/iommu-helpers.h

···
 
 static inline unsigned int
 iommu_coalesce_chunks(struct ioc *ioc, struct device *dev,
-		      struct scatterlist *startsg, int nents,
-		      int (*iommu_alloc_range)(struct ioc *, size_t))
+		struct scatterlist *startsg, int nents,
+		int (*iommu_alloc_range)(struct ioc *, struct device *, size_t))
 {
 	struct scatterlist *contig_sg;	   /* contig chunk head */
 	unsigned long dma_offset, dma_len; /* start/len of DMA stream */
···
 		dma_len = ALIGN(dma_len + dma_offset, IOVP_SIZE);
 		sg_dma_address(contig_sg) =
 			PIDE_FLAG 
-			| (iommu_alloc_range(ioc, dma_len) << IOVP_SHIFT)
+			| (iommu_alloc_range(ioc, dev, dma_len) << IOVP_SHIFT)
 			| dma_offset;
 		n_mappings++;
 	}

drivers/parisc/sba_iommu.c

···
  * resource bit map.
  */
 static int
-sba_alloc_range(struct ioc *ioc, size_t size)
+sba_alloc_range(struct ioc *ioc, struct device *dev, size_t size)
 {
 	unsigned int pages_needed = size >> IOVP_SHIFT;
 #ifdef SBA_COLLECT_STATS
···
 	ioc->msingle_calls++;
 	ioc->msingle_pages += size >> IOVP_SHIFT;
 #endif
-	pide = sba_alloc_range(ioc, size);
+	pide = sba_alloc_range(ioc, dev, size);
 	iovp = (dma_addr_t) pide << IOVP_SHIFT;
 
 	DBG_RUN("%s() 0x%p -> 0x%lx\n",