#ifndef _ASM_SPARC64_DMA_MAPPING_H
#define _ASM_SPARC64_DMA_MAPPING_H
-#include <linux/config.h>
#ifdef CONFIG_PCI
-#include <asm-generic/dma-mapping.h>
+
+/* we implement the API below in terms of the existing PCI one,
+ * so include it */
+#include <linux/pci.h>
+/* need struct page definitions */
+#include <linux/mm.h>
+
+static inline int
+dma_supported(struct device *dev, u64 mask)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ return pci_dma_supported(to_pci_dev(dev), mask);
+}
+
+static inline int
+dma_set_mask(struct device *dev, u64 dma_mask)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
+}
+
+static inline void *
+dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
+ gfp_t flag)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ return pci_iommu_ops->alloc_consistent(to_pci_dev(dev), size, dma_handle, flag);
+}
+
+static inline void
+dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
+ dma_addr_t dma_handle)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ pci_free_consistent(to_pci_dev(dev), size, cpu_addr, dma_handle);
+}
+
+static inline dma_addr_t
+dma_map_single(struct device *dev, void *cpu_addr, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ return pci_map_single(to_pci_dev(dev), cpu_addr, size, (int)direction);
+}
+
+static inline void
+dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ pci_unmap_single(to_pci_dev(dev), dma_addr, size, (int)direction);
+}
+
+static inline dma_addr_t
+dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ return pci_map_page(to_pci_dev(dev), page, offset, size, (int)direction);
+}
+
+static inline void
+dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ pci_unmap_page(to_pci_dev(dev), dma_address, size, (int)direction);
+}
+
+static inline int
+dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction direction)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ return pci_map_sg(to_pci_dev(dev), sg, nents, (int)direction);
+}
+
+static inline void
+dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
+ enum dma_data_direction direction)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ pci_unmap_sg(to_pci_dev(dev), sg, nhwentries, (int)direction);
+}
+
+static inline void
+dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ pci_dma_sync_single_for_cpu(to_pci_dev(dev), dma_handle,
+ size, (int)direction);
+}
+
+static inline void
+dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ pci_dma_sync_single_for_device(to_pci_dev(dev), dma_handle,
+ size, (int)direction);
+}
+
+static inline void
+dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
+ enum dma_data_direction direction)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ pci_dma_sync_sg_for_cpu(to_pci_dev(dev), sg, nelems, (int)direction);
+}
+
+static inline void
+dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
+ enum dma_data_direction direction)
+{
+ BUG_ON(dev->bus != &pci_bus_type);
+
+ pci_dma_sync_sg_for_device(to_pci_dev(dev), sg, nelems, (int)direction);
+}
+
+static inline int
+dma_mapping_error(dma_addr_t dma_addr)
+{
+ return pci_dma_mapping_error(dma_addr);
+}
+
#else
struct device;
#endif /* PCI */
+
+/* Now for the API extensions over the pci_ one */
+
+#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+#define dma_is_consistent(d) (1)
+
+static inline int
+dma_get_cache_alignment(void)
+{
+ /* no easy way to get cache size on all processors, so return
+ * the maximum possible, to be safe */
+ return (1 << INTERNODE_CACHE_SHIFT);
+}
+
+static inline void
+dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction)
+{
+ /* just sync everything, that's all the pci API can do */
+ dma_sync_single_for_cpu(dev, dma_handle, offset+size, direction);
+}
+
+static inline void
+dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction)
+{
+ /* just sync everything, that's all the pci API can do */
+ dma_sync_single_for_device(dev, dma_handle, offset+size, direction);
+}
+
+static inline void
+dma_cache_sync(void *vaddr, size_t size,
+ enum dma_data_direction direction)
+{
+ /* could define this in terms of the dma_cache ... operations,
+ * but if you get this on a platform, you should convert the platform
+ * to using the generic device DMA API */
+ BUG();
+}
+
#endif /* _ASM_SPARC64_DMA_MAPPING_H */
git.samba.org / sfrench / cifs-2.6.git / blobdiff