remove hwsw_dma_ops

This removes remove hwsw_dma_ops (and hwsw_*
functions). hwsw_dma_get_ops can select swiotlb_dma_ops and
sba_dma_ops appropriately.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2 files changed, 14 insertions, 171 deletions

diff --git a/arch/ia64/hp/common/hwsw_iommu.c b/arch/ia64/hp/common/hwsw_iommu.c
index 5cf750e1fddc..e5bbeba77810 100644
--- a/arch/ia64/hp/common/hwsw_iommu.c
+++ b/arch/ia64/hp/common/hwsw_iommu.c
@@ -17,55 +17,33 @@
 #include <linux/swiotlb.h>
 #include <asm/machvec.h>
 
+extern struct dma_mapping_ops sba_dma_ops, swiotlb_dma_ops;
+
 /* swiotlb declarations & definitions: */
 extern int swiotlb_late_init_with_default_size (size_t size);
 
-/* hwiommu declarations & definitions: */
-
-extern void *sba_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t);
-extern void sba_free_coherent (struct device *, size_t, void *, dma_addr_t);
-extern dma_addr_t sba_map_single_attrs(struct device *, void *, size_t, int,
-                                       struct dma_attrs *);
-extern void sba_unmap_single_attrs(struct device *, dma_addr_t, size_t, int,
-                                   struct dma_attrs *);
-extern int sba_map_sg_attrs(struct device *, struct scatterlist *, int, int,
-                            struct dma_attrs *);
-extern void sba_unmap_sg_attrs(struct device *, struct scatterlist *, int, int,
-                               struct dma_attrs *);
-extern int sba_dma_supported (struct device *, u64);
-extern int sba_dma_mapping_error(struct device *, dma_addr_t);
-
-#define hwiommu_alloc_coherent          sba_alloc_coherent
-#define hwiommu_free_coherent           sba_free_coherent
-#define hwiommu_map_single_attrs        sba_map_single_attrs
-#define hwiommu_unmap_single_attrs      sba_unmap_single_attrs
-#define hwiommu_map_sg_attrs            sba_map_sg_attrs
-#define hwiommu_unmap_sg_attrs          sba_unmap_sg_attrs
-#define hwiommu_dma_supported           sba_dma_supported
-#define hwiommu_dma_mapping_error       sba_dma_mapping_error
-#define hwiommu_sync_single_for_cpu     machvec_dma_sync_single
-#define hwiommu_sync_sg_for_cpu         machvec_dma_sync_sg
-#define hwiommu_sync_single_for_device  machvec_dma_sync_single
-#define hwiommu_sync_sg_for_device      machvec_dma_sync_sg
-
-
 /*
  * Note: we need to make the determination of whether or not to use
  * the sw I/O TLB based purely on the device structure.  Anything else
  * would be unreliable or would be too intrusive.
  */
-static inline int
-use_swiotlb (struct device *dev)
+static inline int use_swiotlb(struct device *dev)
 {
-        return dev && dev->dma_mask && !hwiommu_dma_supported(dev, *dev->dma_mask);
+        return dev && dev->dma_mask &&
+                !sba_dma_ops.dma_supported_op(dev, *dev->dma_mask);
 }
 
-struct dma_mapping_ops hwsw_dma_ops;
+struct dma_mapping_ops *hwsw_dma_get_ops(struct device *dev)
+{
+        if (use_swiotlb(dev))
+                return &swiotlb_dma_ops;
+        return &sba_dma_ops;
+}
+EXPORT_SYMBOL(hwsw_dma_get_ops);
 
 void __init
 hwsw_init (void)
 {
-        dma_ops = &hwsw_dma_ops;
         /* default to a smallish 2MB sw I/O TLB */
         if (swiotlb_late_init_with_default_size (2 * (1<<20)) != 0) {
 #ifdef CONFIG_IA64_GENERIC
@@ -78,140 +56,3 @@ hwsw_init (void)
 #endif
         }
 }
-
-void *
-hwsw_alloc_coherent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flags)
-{
-        if (use_swiotlb(dev))
-                return swiotlb_alloc_coherent(dev, size, dma_handle, flags);
-        else
-                return hwiommu_alloc_coherent(dev, size, dma_handle, flags);
-}
-
-void
-hwsw_free_coherent (struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle)
-{
-        if (use_swiotlb(dev))
-                swiotlb_free_coherent(dev, size, vaddr, dma_handle);
-        else
-                hwiommu_free_coherent(dev, size, vaddr, dma_handle);
-}
-
-dma_addr_t
-hwsw_map_single_attrs(struct device *dev, void *addr, size_t size, int dir,
-                       struct dma_attrs *attrs)
-{
-        if (use_swiotlb(dev))
-                return swiotlb_map_single_attrs(dev, addr, size, dir, attrs);
-        else
-                return hwiommu_map_single_attrs(dev, addr, size, dir, attrs);
-}
-EXPORT_SYMBOL(hwsw_map_single_attrs);
-
-void
-hwsw_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
-                         int dir, struct dma_attrs *attrs)
-{
-        if (use_swiotlb(dev))
-                return swiotlb_unmap_single_attrs(dev, iova, size, dir, attrs);
-        else
-                return hwiommu_unmap_single_attrs(dev, iova, size, dir, attrs);
-}
-EXPORT_SYMBOL(hwsw_unmap_single_attrs);
-
-int
-hwsw_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
-                   int dir, struct dma_attrs *attrs)
-{
-        if (use_swiotlb(dev))
-                return swiotlb_map_sg_attrs(dev, sglist, nents, dir, attrs);
-        else
-                return hwiommu_map_sg_attrs(dev, sglist, nents, dir, attrs);
-}
-EXPORT_SYMBOL(hwsw_map_sg_attrs);
-
-void
-hwsw_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
-                     int dir, struct dma_attrs *attrs)
-{
-        if (use_swiotlb(dev))
-                return swiotlb_unmap_sg_attrs(dev, sglist, nents, dir, attrs);
-        else
-                return hwiommu_unmap_sg_attrs(dev, sglist, nents, dir, attrs);
-}
-EXPORT_SYMBOL(hwsw_unmap_sg_attrs);
-
-void
-hwsw_sync_single_for_cpu (struct device *dev, dma_addr_t addr, size_t size, int dir)
-{
-        if (use_swiotlb(dev))
-                swiotlb_sync_single_for_cpu(dev, addr, size, dir);
-        else
-                hwiommu_sync_single_for_cpu(dev, addr, size, dir);
-}
-
-void
-hwsw_sync_sg_for_cpu (struct device *dev, struct scatterlist *sg, int nelems, int dir)
-{
-        if (use_swiotlb(dev))
-                swiotlb_sync_sg_for_cpu(dev, sg, nelems, dir);
-        else
-                hwiommu_sync_sg_for_cpu(dev, sg, nelems, dir);
-}
-
-void
-hwsw_sync_single_for_device (struct device *dev, dma_addr_t addr, size_t size, int dir)
-{
-        if (use_swiotlb(dev))
-                swiotlb_sync_single_for_device(dev, addr, size, dir);
-        else
-                hwiommu_sync_single_for_device(dev, addr, size, dir);
-}
-
-void
-hwsw_sync_sg_for_device (struct device *dev, struct scatterlist *sg, int nelems, int dir)
-{
-        if (use_swiotlb(dev))
-                swiotlb_sync_sg_for_device(dev, sg, nelems, dir);
-        else
-                hwiommu_sync_sg_for_device(dev, sg, nelems, dir);
-}
-
-int
-hwsw_dma_supported (struct device *dev, u64 mask)
-{
-        if (hwiommu_dma_supported(dev, mask))
-                return 1;
-        return swiotlb_dma_supported(dev, mask);
-}
-
-int
-hwsw_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
-        return hwiommu_dma_mapping_error(dev, dma_addr) ||
-                swiotlb_dma_mapping_error(dev, dma_addr);
-}
-
-EXPORT_SYMBOL(hwsw_dma_mapping_error);
-EXPORT_SYMBOL(hwsw_dma_supported);
-EXPORT_SYMBOL(hwsw_alloc_coherent);
-EXPORT_SYMBOL(hwsw_free_coherent);
-EXPORT_SYMBOL(hwsw_sync_single_for_cpu);
-EXPORT_SYMBOL(hwsw_sync_single_for_device);
-EXPORT_SYMBOL(hwsw_sync_sg_for_cpu);
-EXPORT_SYMBOL(hwsw_sync_sg_for_device);
-
-struct dma_mapping_ops hwsw_dma_ops = {
-        .alloc_coherent         = hwsw_alloc_coherent,
-        .free_coherent          = hwsw_free_coherent,
-        .map_single_attrs       = hwsw_map_single_attrs,
-        .unmap_single_attrs     = hwsw_unmap_single_attrs,
-        .map_sg_attrs           = hwsw_map_sg_attrs,
-        .unmap_sg_attrs         = hwsw_unmap_sg_attrs,
-        .sync_single_for_cpu    = hwsw_sync_single_for_cpu,
-        .sync_sg_for_cpu        = hwsw_sync_sg_for_cpu,
-        .sync_single_for_device = hwsw_sync_single_for_device,
-        .sync_sg_for_device     = hwsw_sync_sg_for_device,
-        .dma_supported_op       = hwsw_dma_supported,
-        .mapping_error          = hwsw_dma_mapping_error,
-};
diff --git a/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h b/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h
index 48c3a35c95fb..1091ac39740c 100644
--- a/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h
+++ b/arch/ia64/include/asm/machvec_hpzx1_swiotlb.h
@@ -2,6 +2,7 @@
 #define _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h
 
 extern ia64_mv_setup_t                          dig_setup;
+extern ia64_mv_dma_get_ops                      hwsw_dma_get_ops;
 
 /*
  * This stuff has dual use!
@@ -13,5 +14,6 @@ extern ia64_mv_setup_t				dig_setup;
 #define platform_name                           "hpzx1_swiotlb"
 #define platform_setup                          dig_setup
 #define platform_dma_init                       machvec_noop
+#define platform_dma_get_ops                    hwsw_dma_get_ops
 
 #endif /* _ASM_IA64_MACHVEC_HPZX1_SWIOTLB_h */