frv: convert to dma_map_ops

[cascardo/linux.git] / arch / frv / mb93090-mb00 / pci-dma-nommu.c

diff --git a/arch/frv/mb93090-mb00/pci-dma-nommu.c b/arch/frv/mb93090-mb00/pci-dma-nommu.c
index 8eeea0d..082be49 100644 (file)
--- a/arch/frv/mb93090-mb00/pci-dma-nommu.c
+++ b/arch/frv/mb93090-mb00/pci-dma-nommu.c
@@ -34,7 +34,8 @@ struct dma_alloc_record {
 static DEFINE_SPINLOCK(dma_alloc_lock);
 static LIST_HEAD(dma_alloc_list);
 
-void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t gfp)
+static void *frv_dma_alloc(struct device *hwdev, size_t size, dma_addr_t *dma_handle,
+               gfp_t gfp, struct dma_attrs *attrs)
 {
        struct dma_alloc_record *new;
        struct list_head *this = &dma_alloc_list;
@@ -84,9 +85,8 @@ void *dma_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_hand
        return NULL;
 }
 
-EXPORT_SYMBOL(dma_alloc_coherent);
-
-void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
+static void frv_dma_free(struct device *hwdev, size_t size, void *vaddr,
+               dma_addr_t dma_handle, struct dma_attrs *attrs)
 {
        struct dma_alloc_record *rec;
        unsigned long flags;
@@ -105,22 +105,9 @@ void dma_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_
        BUG();
 }
 
-EXPORT_SYMBOL(dma_free_coherent);
-
-dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
-                         enum dma_data_direction direction)
-{
-       BUG_ON(direction == DMA_NONE);
-
-       frv_cache_wback_inv((unsigned long) ptr, (unsigned long) ptr + size);
-
-       return virt_to_bus(ptr);
-}
-
-EXPORT_SYMBOL(dma_map_single);
-
-int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
-              enum dma_data_direction direction)
+static int frv_dma_map_sg(struct device *dev, struct scatterlist *sglist,
+               int nents, enum dma_data_direction direction,
+               struct dma_attrs *attrs)
 {
        int i;
        struct scatterlist *sg;
@@ -135,14 +122,49 @@ int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
        return nents;
 }
 
-EXPORT_SYMBOL(dma_map_sg);
-
-dma_addr_t dma_map_page(struct device *dev, struct page *page, unsigned long offset,
-                       size_t size, enum dma_data_direction direction)
+static dma_addr_t frv_dma_map_page(struct device *dev, struct page *page,
+               unsigned long offset, size_t size,
+               enum dma_data_direction direction, struct dma_attrs *attrs)
 {
        BUG_ON(direction == DMA_NONE);
        flush_dcache_page(page);
        return (dma_addr_t) page_to_phys(page) + offset;
 }
 
-EXPORT_SYMBOL(dma_map_page);
+static void frv_dma_sync_single_for_device(struct device *dev,
+               dma_addr_t dma_handle, size_t size,
+               enum dma_data_direction direction)
+{
+       flush_write_buffers();
+}
+
+static void frv_dma_sync_sg_for_device(struct device *dev,
+               struct scatterlist *sg, int nelems,
+               enum dma_data_direction direction)
+{
+       flush_write_buffers();
+}
+
+
+static int frv_dma_supported(struct device *dev, u64 mask)
+{
+        /*
+         * we fall back to GFP_DMA when the mask isn't all 1s,
+         * so we can't guarantee allocations that must be
+         * within a tighter range than GFP_DMA..
+         */
+        if (mask < 0x00ffffff)
+                return 0;
+       return 1;
+}
+
+struct dma_map_ops frv_dma_ops = {
+       .alloc                  = frv_dma_alloc,
+       .free                   = frv_dma_free,
+       .map_page               = frv_dma_map_page,
+       .map_sg                 = frv_dma_map_sg,
+       .sync_single_for_device = frv_dma_sync_single_for_device,
+       .sync_sg_for_device     = frv_dma_sync_sg_for_device,
+       .dma_supported          = frv_dma_supported,
+};
+EXPORT_SYMBOL(frv_dma_ops);