#ifdef __KERNEL__
-#include <linux/fs.h>
-#include <linux/mm.h>
+#include <linux/dma-mapping.h>
/* Can be used to override the logic in pci_scan_bus for skipping
* already-configured bus numbers - to be used for buggy BIOSes
/* We don't do dynamic PCI IRQ allocation */
}
-/* Dynamic DMA mapping stuff.
- */
-
/* The PCI address space does not 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 (0)
-#include <asm/scatterlist.h>
-
-struct pci_dev;
-
-struct pci_iommu_ops {
- void *(*alloc_consistent)(struct pci_dev *, size_t, dma_addr_t *, gfp_t);
- void (*free_consistent)(struct pci_dev *, size_t, void *, dma_addr_t);
- dma_addr_t (*map_single)(struct pci_dev *, void *, size_t, int);
- void (*unmap_single)(struct pci_dev *, dma_addr_t, size_t, int);
- int (*map_sg)(struct pci_dev *, struct scatterlist *, int, int);
- void (*unmap_sg)(struct pci_dev *, struct scatterlist *, int, int);
- void (*dma_sync_single_for_cpu)(struct pci_dev *, dma_addr_t, size_t, int);
- void (*dma_sync_sg_for_cpu)(struct pci_dev *, struct scatterlist *, int, int);
-};
-
-extern const struct pci_iommu_ops *pci_iommu_ops;
-
-/* Allocate and map kernel buffer using consistent mode DMA for a device.
- * hwdev should be valid struct pci_dev pointer for PCI devices.
- */
-static inline void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle)
+static inline void *pci_alloc_consistent(struct pci_dev *pdev, size_t size,
+ dma_addr_t *dma_handle)
{
- return pci_iommu_ops->alloc_consistent(hwdev, size, dma_handle, GFP_ATOMIC);
+ return dma_alloc_coherent(&pdev->dev, size, dma_handle, GFP_ATOMIC);
}
-/* 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.
- */
-static inline void pci_free_consistent(struct pci_dev *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle)
+static inline void pci_free_consistent(struct pci_dev *pdev, size_t size,
+ void *vaddr, dma_addr_t dma_handle)
{
- return pci_iommu_ops->free_consistent(hwdev, size, vaddr, dma_handle);
+ return dma_free_coherent(&pdev->dev, size, vaddr, 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)
+static inline dma_addr_t pci_map_single(struct pci_dev *pdev, void *ptr,
+ size_t size, int direction)
{
- return pci_iommu_ops->map_single(hwdev, ptr, size, direction);
+ return dma_map_single(&pdev->dev, ptr, size,
+ (enum dma_data_direction) direction);
}
-/* 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.
- */
-static inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr, size_t size, int direction)
+static inline void pci_unmap_single(struct pci_dev *pdev, dma_addr_t dma_addr,
+ size_t size, int direction)
{
- pci_iommu_ops->unmap_single(hwdev, dma_addr, size, direction);
+ dma_unmap_single(&pdev->dev, dma_addr, size,
+ (enum dma_data_direction) direction);
}
-/* No highmem on sparc64, plus we have an IOMMU, so mapping pages is easy. */
#define pci_map_page(dev, page, off, size, dir) \
pci_map_single(dev, (page_address(page) + (off)), size, dir)
-#define pci_unmap_page(dev,addr,sz,dir) pci_unmap_single(dev,addr,sz,dir)
+#define pci_unmap_page(dev,addr,sz,dir) \
+ pci_unmap_single(dev,addr,sz,dir)
/* pci_unmap_{single,page} is not a nop, thus... */
#define DECLARE_PCI_UNMAP_ADDR(ADDR_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 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 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)
+static inline int pci_map_sg(struct pci_dev *pdev, struct scatterlist *sg,
+ int nents, int direction)
{
- return pci_iommu_ops->map_sg(hwdev, sg, nents, direction);
+ return dma_map_sg(&pdev->dev, sg, nents,
+ (enum dma_data_direction) direction);
}
-/* 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 nhwents, int direction)
+static inline void pci_unmap_sg(struct pci_dev *pdev, struct scatterlist *sg,
+ int nents, int direction)
{
- pci_iommu_ops->unmap_sg(hwdev, sg, nhwents, direction);
+ dma_unmap_sg(&pdev->dev, sg, nents,
+ (enum dma_data_direction) direction);
}
-/* 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)
+static inline void pci_dma_sync_single_for_cpu(struct pci_dev *pdev,
+ dma_addr_t dma_handle,
+ size_t size, int direction)
{
- pci_iommu_ops->dma_sync_single_for_cpu(hwdev, dma_handle, size, direction);
+ dma_sync_single_for_cpu(&pdev->dev, dma_handle, size,
+ (enum dma_data_direction) direction);
}
-static inline void
-pci_dma_sync_single_for_device(struct pci_dev *hwdev, dma_addr_t dma_handle,
- size_t size, int direction)
+static inline void pci_dma_sync_single_for_device(struct pci_dev *pdev,
+ dma_addr_t dma_handle,
+ size_t size, int direction)
{
/* No flushing needed to sync cpu writes to the device. */
- BUG_ON(direction == PCI_DMA_NONE);
}
-/* 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 *hwdev, struct scatterlist *sg, int nelems, int direction)
+static inline void pci_dma_sync_sg_for_cpu(struct pci_dev *pdev,
+ struct scatterlist *sg,
+ int nents, int direction)
{
- pci_iommu_ops->dma_sync_sg_for_cpu(hwdev, sg, nelems, direction);
+ dma_sync_sg_for_cpu(&pdev->dev, sg, nents,
+ (enum dma_data_direction) direction);
}
-static inline void
-pci_dma_sync_sg_for_device(struct pci_dev *hwdev, struct scatterlist *sg,
- int nelems, int direction)
+static inline void pci_dma_sync_sg_for_device(struct pci_dev *pdev,
+ struct scatterlist *sg,
+ int nelems, int direction)
{
/* No flushing needed to sync cpu writes to the device. */
- BUG_ON(direction == PCI_DMA_NONE);
}
/* Return whether the given PCI device DMA address mask can
#define PCI64_REQUIRED_MASK (~(dma64_addr_t)0)
#define PCI64_ADDR_BASE 0xfffc000000000000UL
-/* Usage of the pci_dac_foo interfaces is only valid if this
- * test passes.
- */
-#define pci_dac_dma_supported(pci_dev, mask) \
- ((((mask) & PCI64_REQUIRED_MASK) == PCI64_REQUIRED_MASK) ? 1 : 0)
-
-static inline dma64_addr_t
-pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction)
-{
- return (PCI64_ADDR_BASE +
- __pa(page_address(page)) + offset);
-}
-
-static inline struct page *
-pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)
-{
- unsigned long paddr = (dma_addr & PAGE_MASK) - PCI64_ADDR_BASE;
-
- return virt_to_page(__va(paddr));
-}
-
-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)
-{
- /* DAC cycle addressing does not make use of the
- * PCI controller's streaming cache, so 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)
-{
- /* DAC cycle addressing does not make use of the
- * PCI controller's streaming cache, so nothing to do.
- */
-}
-
-#define PCI_DMA_ERROR_CODE (~(dma_addr_t)0x0)
-
static inline int pci_dma_mapping_error(dma_addr_t dma_addr)
{
- return (dma_addr == PCI_DMA_ERROR_CODE);
+ return dma_mapping_error(dma_addr);
}
#ifdef CONFIG_PCI
extern struct resource *pcibios_select_root(struct pci_dev *, struct resource *);
-static inline void pcibios_add_platform_entries(struct pci_dev *dev)
-{
-}
-
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
return PCI_IRQ_NONE;
struct device_node;
extern struct device_node *pci_device_to_OF_node(struct pci_dev *pdev);
+#define HAVE_ARCH_PCI_RESOURCE_TO_USER
+extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
+ const struct resource *rsrc,
+ resource_size_t *start, resource_size_t *end);
#endif /* __KERNEL__ */
#endif /* __SPARC64_PCI_H */
git.openpandora.org / pandora-kernel.git / blobdiff