#include <asm/scatterlist.h>
#include <asm/io.h>
#include <asm/pci-bridge.h>
+#include <asm-generic/pci-dma-compat.h>
struct pci_dev;
extern unsigned long pci_phys_to_bus(unsigned long pa, int busnr);
extern unsigned long pci_bus_to_phys(unsigned int ba, int busnr);
-/*
- * Dynamic DMA Mapping stuff
- * Originally stolen from i386 by ajoshi and updated by paulus
- * Non-consistent cache support by Dan Malek
- */
-
/* The PCI address space does equal the physical memory
* address space. The networking and block device layers use
* this boolean for bounce buffer decisions.
*/
-#define PCI_DMA_BUS_IS_PHYS (1)
-
-/* Allocate and map kernel buffer using consistent mode DMA for a device.
- * hwdev should be valid struct pci_dev pointer for PCI devices,
- * NULL for PCI-like buses (ISA, EISA).
- * Returns non-NULL cpu-view pointer to the buffer if successful and
- * sets *dma_addrp to the pci side dma address as well, else *dma_addrp
- * is undefined.
- */
-extern void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
- dma_addr_t *dma_handle);
-
-/* Free and unmap a consistent DMA buffer.
- * cpu_addr is what was returned from pci_alloc_consistent,
- * size must be the same as what as passed into pci_alloc_consistent,
- * and likewise dma_addr must be the same as what *dma_addrp was set to.
- *
- * References to the memory and mappings associated with cpu_addr/dma_addr
- * past this call are illegal.
- */
-extern void pci_free_consistent(struct pci_dev *hwdev, size_t size,
- void *vaddr, dma_addr_t dma_handle);
-
-/* Map a single buffer of the indicated size for DMA in streaming mode.
- * The 32-bit bus address to use is returned.
- *
- * Once the device is given the dma address, the device owns this memory
- * until either pci_unmap_single or pci_dma_sync_single_for_cpu is performed.
- */
-static inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr,
- size_t size, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-
- consistent_sync(ptr, size, direction);
-
- return virt_to_bus(ptr);
-}
-
-static inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,
- size_t size, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
- /* nothing to do */
-}
+#define PCI_DMA_BUS_IS_PHYS (1)
/* pci_unmap_{page,single} is a nop so... */
#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
#define pci_unmap_len(PTR, LEN_NAME) (0)
#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
-/*
- * pci_{map,unmap}_single_page maps a kernel page to a dma_addr_t. identical
- * to pci_map_single, but takes a struct page instead of a virtual address
- */
-static inline dma_addr_t pci_map_page(struct pci_dev *hwdev, struct page *page,
- unsigned long offset, size_t size,
- int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
- consistent_sync_page(page, offset, size, direction);
- return (page - mem_map) * PAGE_SIZE + PCI_DRAM_OFFSET + offset;
-}
-
-static inline void pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address,
- size_t size, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
- /* Nothing to do */
-}
-
-/* Map a set of buffers described by scatterlist in streaming
- * mode for DMA. This is the scather-gather version of the
- * above pci_map_single interface. Here the scatter gather list
- * elements are each tagged with the appropriate dma address
- * and length. They are obtained via sg_dma_{address,length}(SG).
- *
- * NOTE: An implementation may be able to use a smaller number of
- * DMA address/length pairs than there are SG table elements.
- * (for example via virtual mapping capabilities)
- * The routine returns the number of addr/length pairs actually
- * used, at most nents.
- *
- * Device ownership issues as mentioned above for pci_map_single are
- * the same here.
- */
-static inline int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
- int nents, int direction)
-{
- int i;
-
- BUG_ON(direction == PCI_DMA_NONE);
-
- /*
- * temporary 2.4 hack
- */
- for (i = 0; i < nents; i++, sg++) {
- BUG_ON(!sg->page);
- consistent_sync_page(sg->page, sg->offset,
- sg->length, direction);
- sg->dma_address = page_to_bus(sg->page) + sg->offset;
- }
-
- return nents;
-}
-
-/* Unmap a set of streaming mode DMA translations.
- * Again, cpu read rules concerning calls here are the same as for
- * pci_unmap_single() above.
- */
-static inline void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,
- int nents, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
- /* nothing to do */
-}
-
-/* Make physical memory consistent for a single
- * streaming mode DMA translation after a transfer.
- *
- * If you perform a pci_map_single() but wish to interrogate the
- * buffer using the cpu, yet do not wish to teardown the PCI dma
- * mapping, you must call this function before doing so. At the
- * next point you give the PCI dma address back to the card, you
- * must first perform a pci_dma_sync_for_device, and then the device
- * again owns the buffer.
- */
-static inline void pci_dma_sync_single_for_cpu(struct pci_dev *hwdev,
- dma_addr_t dma_handle,
- size_t size, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-
- consistent_sync(bus_to_virt(dma_handle), size, direction);
-}
-
-static inline void pci_dma_sync_single_for_device(struct pci_dev *hwdev,
- dma_addr_t dma_handle,
- size_t size, int direction)
-{
- BUG_ON(direction == PCI_DMA_NONE);
-
- consistent_sync(bus_to_virt(dma_handle), size, direction);
-}
-
-/* Make physical memory consistent for a set of streaming
- * mode DMA translations after a transfer.
- *
- * The same as pci_dma_sync_single_for_* but for a scatter-gather list,
- * same rules and usage.
- */
-static inline void pci_dma_sync_sg_for_cpu(struct pci_dev *hwdev,
- struct scatterlist *sg,
- int nelems, int direction)
-{
- int i;
-
- BUG_ON(direction == PCI_DMA_NONE);
-
- for (i = 0; i < nelems; i++, sg++)
- consistent_sync_page(sg->page, sg->offset,
- sg->length, direction);
-}
-
-static inline void pci_dma_sync_sg_for_device(struct pci_dev *hwdev,
- struct scatterlist *sg,
- int nelems, int direction)
-{
- int i;
-
- BUG_ON(direction == PCI_DMA_NONE);
-
- for (i = 0; i < nelems; i++, sg++)
- consistent_sync_page(sg->page, sg->offset,
- sg->length, direction);
-}
-
-/* Return whether the given PCI device DMA address mask can
- * be supported properly. For example, if your device can
- * only drive the low 24-bits during PCI bus mastering, then
- * you would pass 0x00ffffff as the mask to this function.
- */
-static inline int pci_dma_supported(struct pci_dev *hwdev, u64 mask)
-{
- return 1;
-}
-
/*
* At present there are very few 32-bit PPC machines that can have
* memory above the 4GB point, and we don't support that.
*/
#define pci_dac_dma_supported(pci_dev, mask) (0)
-static inline dma64_addr_t
-pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
-{
- return (dma64_addr_t) page_to_bus(page) + offset;
-}
-
-static inline struct page *
-pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- return mem_map + (unsigned long)(dma_addr >> PAGE_SHIFT);
-}
-
-static inline unsigned long
-pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- return (dma_addr & ~PAGE_MASK);
-}
-
-static inline void
-pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
-{
- /* Nothing to do. */
-}
-
-static inline void
-pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)
-{
- /* Nothing to do. */
-}
-
-static inline int pci_dma_mapping_error(dma_addr_t dma_addr)
-{
- return 0;
-}
-
/* Return the index of the PCI controller for device PDEV. */
#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
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