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#ifndef __SPARC64_PCI_H
#define __SPARC64_PCI_H
#include <asm/scatterlist.h>
/* Can be used to override the logic in pci_scan_bus for skipping
* already-configured bus numbers - to be used for buggy BIOSes
* or architectures with incomplete PCI setup by the loader.
*/
#define pcibios_assign_all_busses() 0
struct pci_dev;
/* Allocate and map kernel buffer using consistant 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_consistant(struct pci_dev *pdev, long size, u32 *dma_addrp);
/* Free and unmap a consistant DMA buffer.
* cpu_addr is what was returned from pci_alloc_consistant,
* size must be the same as what as passed into pci_alloc_consistant,
* and likewise dma_addr must be the same as what *dma_addrp was set to.
*
* References to the memory and mappings assosciated with cpu_addr/dma_addr
* past this call are illegal.
*/
extern void pci_free_consistant(struct pci_dev *pdev, long size, void *cpu_addr, u32 dma_addr);
/* 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_sync_single is performed.
*/
extern u32 pci_map_single(struct pci_dev *pdev, void *buffer, long size);
/* 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 guarenteed to see
* whatever the device wrote there.
*/
extern void pci_unmap_single(struct pci_dev *pdev, u32 dma_addr, long size);
/* Map a set of buffers described by scatterlist in streaming
* mode for PCI 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 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 *pdev, struct scatterlist *sg, int 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.
*/
extern void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sg, int nents);
/* Make physical memory consistant 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, the
* device again owns the buffer.
*/
extern void pci_dma_sync_single(struct pci_dev *, u32, long);
/* Make physical memory consistant 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.
*/
extern void pci_dma_sync_sg(struct pci_dev *, struct scatterlist *, int);
#endif /* __SPARC64_PCI_H */
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