decisions. */
#define PCI_DMA_BUS_IS_PHYS 0
-/* Allocate and map kernel buffer using consistent mode DMA for PCI
- device. 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 *, size_t,
- dma_addr_t *, gfp_t);
-static inline void *
-pci_alloc_consistent(struct pci_dev *dev, size_t size, dma_addr_t *dma)
-{
- return __pci_alloc_consistent(dev, size, dma, GFP_ATOMIC);
-}
-
-/* Free and unmap a consistent DMA buffer. CPU_ADDR and DMA_ADDR must
- be values that were returned from pci_alloc_consistent. SIZE must
- be the same as what as passed into pci_alloc_consistent.
- References to the memory and mappings associated with CPU_ADDR or
- DMA_ADDR past this call are illegal. */
-
-extern void pci_free_consistent(struct pci_dev *, size_t, void *, dma_addr_t);
-
-/* Map a single buffer of the indicate size for PCI DMA in streaming mode.
- The 32-bit PCI bus mastering 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. */
-
-extern dma_addr_t pci_map_single(struct pci_dev *, void *, size_t, int);
-
-/* Likewise, but for a page instead of an address. */
-extern dma_addr_t pci_map_page(struct pci_dev *, struct page *,
- unsigned long, size_t, int);
-
-/* Test for pci_map_single or pci_map_page having generated an error. */
-
-static inline int
-pci_dma_mapping_error(struct pci_dev *pdev, dma_addr_t dma_addr)
-{
- return dma_addr == 0;
-}
-
-/* Unmap a single streaming mode DMA translation. The DMA_ADDR and
- SIZE must match what was provided for in a previous pci_map_single
- call. All other usages are undefined. After this call, reads by
- the cpu to the buffer are guaranteed to see whatever the device
- wrote there. */
-
-extern void pci_unmap_single(struct pci_dev *, dma_addr_t, size_t, int);
-extern void pci_unmap_page(struct pci_dev *, dma_addr_t, size_t, int);
-
-/* pci_unmap_{single,page} is not a nop, thus... */
-#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
- dma_addr_t ADDR_NAME;
-#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \
- __u32 LEN_NAME;
-#define pci_unmap_addr(PTR, ADDR_NAME) \
- ((PTR)->ADDR_NAME)
-#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
- (((PTR)->ADDR_NAME) = (VAL))
-#define pci_unmap_len(PTR, LEN_NAME) \
- ((PTR)->LEN_NAME)
-#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
- (((PTR)->LEN_NAME) = (VAL))
-
-/* Map a set of buffers described by scatterlist in streaming mode for
- PCI DMA. This is the scatter-gather version of the above
- pci_map_single interface. Here the scatter gather list elements
- are each tagged with the appropriate PCI 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. */
-
-extern int pci_map_sg(struct pci_dev *, struct scatterlist *, int, int);
-
-/* Unmap a set of streaming mode DMA translations. Again, cpu read
- rules concerning calls here are the same as for pci_unmap_single()
- above. */
-
-extern void pci_unmap_sg(struct pci_dev *, struct scatterlist *, int, int);
-
-/* Make physical memory consistent for a single streaming mode DMA
- translation after a transfer and device currently has ownership
- of the buffer.
-
- 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 *dev, dma_addr_t dma_addr,
- long size, int direction)
-{
- /* Nothing to do. */
-}
-
-static inline void
-pci_dma_sync_single_for_device(struct pci_dev *dev, dma_addr_t dma_addr,
- size_t size, int direction)
-{
- /* Nothing to do. */
-}
-
-/* Make physical memory consistent for a set of streaming mode DMA
- translations after a transfer. The same as pci_dma_sync_single_*
- but for a scatter-gather list, same rules and usage. */
-
-static inline void
-pci_dma_sync_sg_for_cpu(struct pci_dev *dev, struct scatterlist *sg,
- int nents, int direction)
-{
- /* Nothing to do. */
-}
-
-static inline void
-pci_dma_sync_sg_for_device(struct pci_dev *dev, struct scatterlist *sg,
- int nents, int direction)
-{
- /* Nothing to do. */
-}
-
-/* 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. */
+#ifdef CONFIG_PCI
-extern int pci_dma_supported(struct pci_dev *hwdev, u64 mask);
+/* implement the pci_ DMA API in terms of the generic device dma_ one */
+#include <asm-generic/pci-dma-compat.h>
-#ifdef CONFIG_PCI
static inline void pci_dma_burst_advice(struct pci_dev *pdev,
enum pci_dma_burst_strategy *strat,
unsigned long *strategy_parameter)
return hose->need_domain_info;
}
-struct pci_dev *alpha_gendev_to_pci(struct device *dev);
-
#endif /* __KERNEL__ */
/* Values for the `which' argument to sys_pciconfig_iobase. */
git.openpandora.org / pandora-kernel.git / blobdiff