sparc32: Make mmu_map_dma_area and mmu_unmap_dma_area take a device pointer.

This lets us kill this "map it in every IOMMU" crazy code, and also
some of the final references to sbus_root.

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 13 insertions, 17 deletions

diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c
index 6b469820fb92..0f97ab30df3f 100644
--- a/arch/sparc/mm/io-unit.c
+++ b/arch/sparc/mm/io-unit.c
@@ -186,12 +186,12 @@ static void iounit_release_scsi_sgl(struct device *dev, struct scatterlist *sg,
 }
 
 #ifdef CONFIG_SBUS
-static int iounit_map_dma_area(dma_addr_t *pba, unsigned long va, __u32 addr, int len)
+static int iounit_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va, __u32 addr, int len)
 {
+        struct iounit_struct *iounit = dev->archdata.iommu;
         unsigned long page, end;
         pgprot_t dvma_prot;
         iopte_t *iopte;
-        struct sbus_bus *sbus;
 
         *pba = addr;
 
@@ -213,12 +213,8 @@ static int iounit_map_dma_area(dma_addr_t *pba, unsigned long va, __u32 addr, in
                         
                         i = ((addr - IOUNIT_DMA_BASE) >> PAGE_SHIFT);
 
-                        for_each_sbus(sbus) {
-                                struct iounit_struct *iounit = sbus->ofdev.dev.archdata.iommu;
-
-                                iopte = (iopte_t *)(iounit->page_table + i);
-                                *iopte = MKIOPTE(__pa(page));
-                        }
+                        iopte = (iopte_t *)(iounit->page_table + i);
+                        *iopte = MKIOPTE(__pa(page));
                 }
                 addr += PAGE_SIZE;
                 va += PAGE_SIZE;
@@ -229,7 +225,7 @@ static int iounit_map_dma_area(dma_addr_t *pba, unsigned long va, __u32 addr, in
         return 0;
 }
 
-static void iounit_unmap_dma_area(unsigned long addr, int len)
+static void iounit_unmap_dma_area(struct device *dev, unsigned long addr, int len)
 {
         /* XXX Somebody please fill this in */
 }
diff --git a/arch/sparc/mm/iommu.c b/arch/sparc/mm/iommu.c
index 832d99f33470..2970cea877b1 100644
--- a/arch/sparc/mm/iommu.c
+++ b/arch/sparc/mm/iommu.c
@@ -334,11 +334,11 @@ static void iommu_release_scsi_sgl(struct device *dev, struct scatterlist *sg, i
 }
 
 #ifdef CONFIG_SBUS
-static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
-    unsigned long addr, int len)
+static int iommu_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va,
+                              unsigned long addr, int len)
 {
+        struct iommu_struct *iommu = dev->archdata.iommu;
         unsigned long page, end;
-        struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
         iopte_t *iopte = iommu->page_table;
         iopte_t *first;
         int ioptex;
@@ -401,9 +401,9 @@ static int iommu_map_dma_area(dma_addr_t *pba, unsigned long va,
         return 0;
 }
 
-static void iommu_unmap_dma_area(unsigned long busa, int len)
+static void iommu_unmap_dma_area(struct device *dev, unsigned long busa, int len)
 {
-        struct iommu_struct *iommu = sbus_root->ofdev.dev.archdata.iommu;
+        struct iommu_struct *iommu = dev->archdata.iommu;
         iopte_t *iopte = iommu->page_table;
         unsigned long end;
         int ioptex = (busa - iommu->start) >> PAGE_SHIFT;
diff --git a/arch/sparc/mm/sun4c.c b/arch/sparc/mm/sun4c.c
index 65af3119f5ac..f289e7ce902e 100644
--- a/arch/sparc/mm/sun4c.c
+++ b/arch/sparc/mm/sun4c.c
@@ -532,8 +532,8 @@ static inline void sun4c_init_ss2_cache_bug(void)
 }
 
 /* Addr is always aligned on a page boundary for us already. */
-static int sun4c_map_dma_area(dma_addr_t *pba, unsigned long va,
-    unsigned long addr, int len)
+static int sun4c_map_dma_area(struct device *dev, dma_addr_t *pba, unsigned long va,
+                              unsigned long addr, int len)
 {
         unsigned long page, end;
 
@@ -555,7 +555,7 @@ static int sun4c_map_dma_area(dma_addr_t *pba, unsigned long va,
         return 0;
 }
 
-static void sun4c_unmap_dma_area(unsigned long busa, int len)
+static void sun4c_unmap_dma_area(struct device *dev, unsigned long busa, int len)
 {
         /* Fortunately for us, bus_addr == uncached_virt in sun4c. */
         /* XXX Implement this */