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#ifndef __x8664_PCI_H

#define __x8664_PCI_H

#include <linux/config.h>

#include <asm/io.h>

#ifdef __KERNEL__

extern dma_addr_t bad_dma_address;

/* 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 */

#ifdef CONFIG_PCI

extern unsigned int pcibios_assign_all_busses(void);

#else

#define pcibios_assign_all_busses()     0

#endif

#define pcibios_scan_all_fns()          0

extern unsigned long pci_mem_start;

#define PCIBIOS_MIN_IO          0x1000

#define PCIBIOS_MIN_MEM         (pci_mem_start)

void pcibios_config_init(void);

struct pci_bus * pcibios_scan_root(int bus);

extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value);

extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value);

void pcibios_set_master(struct pci_dev *dev);

void pcibios_penalize_isa_irq(int irq);

struct irq_routing_table *pcibios_get_irq_routing_table(void);

int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);

#include <linux/types.h>

#include <linux/slab.h>

#include <asm/scatterlist.h>

#include <linux/string.h>

#include <asm/io.h>

#include <asm/page.h>

#include <asm/mmzone.h>

struct pci_dev;

extern int force_mmu;

/* 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);

#ifdef CONFIG_SWIOTLB

extern int swiotlb;

extern dma_addr_t swiotlb_map_single (struct pci_dev *hwdev, void *ptr, size_t size,

                                     int dir);

extern void swiotlb_unmap_single (struct pci_dev *hwdev, dma_addr_t dev_addr,

                                 size_t size, int dir);

extern void swiotlb_sync_single (struct pci_dev *hwdev, dma_addr_t dev_addr,

                                size_t size, int dir);

extern void swiotlb_sync_sg (struct pci_dev *hwdev, struct scatterlist *sg, int nelems,

                            int dir);

#endif

#ifdef CONFIG_GART_IOMMU

/* 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 is performed.

 */

extern dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr,

                                 size_t size, int direction);

void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t addr,

                                   size_t size, int direction);

/*

 * 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

 */

#define pci_map_page(dev,page,offset,size,dir) \

        pci_map_single((dev), page_address(page)+(offset), (size), (dir))

#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))

static inline void pci_dma_sync_single(struct pci_dev *hwdev,

                                       dma_addr_t dma_handle,

                                       size_t size, int direction)

{

#ifdef CONFIG_SWIOTLB

       if (swiotlb)

               return swiotlb_sync_single(hwdev,dma_handle,size,direction);

#endif

        BUG_ON(direction == PCI_DMA_NONE);

}

static inline void pci_dma_sync_sg(struct pci_dev *hwdev,

                                   struct scatterlist *sg,

                                   int nelems, int direction)

{

        BUG_ON(direction == PCI_DMA_NONE);

#ifdef CONFIG_SWIOTLB

       if (swiotlb)

               return swiotlb_sync_sg(hwdev,sg,nelems,direction);

#endif

}

/* 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     (0)

#else

static inline dma_addr_t pci_map_single(struct pci_dev *hwdev, void *ptr,

                                        size_t size, int direction)

{

        dma_addr_t addr;

        if (direction == PCI_DMA_NONE)

                out_of_line_bug();

        addr = virt_to_bus(ptr);

        /*

         * This is gross, but what should I do.

         * Unfortunately drivers do not test the return value of this.

         */

        if ((addr+size) & ~hwdev->dma_mask)

                out_of_line_bug();

        return addr;

}

static inline void pci_unmap_single(struct pci_dev *hwdev, dma_addr_t dma_addr,

                                    size_t size, int direction)

{

        if (direction == PCI_DMA_NONE)

                out_of_line_bug();

        /* Nothing to do */

}

static inline dma_addr_t pci_map_page(struct pci_dev *hwdev, struct page *page,

                                      unsigned long offset, size_t size, int direction)

{

        dma_addr_t addr;

        if (direction == PCI_DMA_NONE)

                out_of_line_bug();

        addr = page_to_pfn(page) * PAGE_SIZE + offset;

        if ((addr+size) & ~hwdev->dma_mask)

                out_of_line_bug();

        return addr;

}

/* pci_unmap_{page,single} is a nop so... */

#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)

#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)

#define pci_unmap_addr(PTR, ADDR_NAME)          (0)

#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0)

#define pci_unmap_len(PTR, LEN_NAME)            (0)

#define pci_unmap_len_set(PTR, LEN_NAME, VAL)   do { } while (0)

/* 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, the

 * device again owns the buffer.

 */

static inline void pci_dma_sync_single(struct pci_dev *hwdev,

                                       dma_addr_t dma_handle,

                                       size_t size, int direction)

{

        if (direction == PCI_DMA_NONE)

                out_of_line_bug();

        flush_write_buffers();

}

/* 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(struct pci_dev *hwdev,

                                   struct scatterlist *sg,

                                   int nelems, int direction)

{

        if (direction == PCI_DMA_NONE)

                out_of_line_bug();

        flush_write_buffers();

}

#define PCI_DMA_BUS_IS_PHYS     1

#endif

extern int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,

                      int nents, int direction);

extern void pci_unmap_sg(struct pci_dev *hwdev, struct scatterlist *sg,

                         int nents, int direction);

#define pci_unmap_page pci_unmap_single

/* 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)

{

        /*

         * we fall back to GFP_DMA when the mask isn't all 1s,

         * so we can't guarantee allocations that must be

         * within a tighter range than GFP_DMA..

         */

        if(mask < 0x00ffffff)

                return 0;

        return 1;

}

/* This is always fine. */

#define pci_dac_dma_supported(pci_dev, mask)    (1)

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) +

                (dma64_addr_t) offset);

}

static __inline__ struct page *

pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr)

{

        return pfn_to_page(phys_to_pfn(dma_addr));

}

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(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction)

{

        flush_write_buffers();

}

/* These macros should be used after a pci_map_sg call has been done

 * to get bus addresses of each of the SG entries and their lengths.

 * You should only work with the number of sg entries pci_map_sg

 * returns.

 */

#define sg_dma_address(sg)      ((sg)->dma_address)

#define sg_dma_len(sg)          ((sg)->length)

/* Return the index of the PCI controller for device. */

static inline int pci_controller_num(struct pci_dev *dev)

{

        return 0;

}

#define HAVE_PCI_MMAP

extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,

                               enum pci_mmap_state mmap_state, int write_combine);

#endif /* __KERNEL__ */

#endif /* __x8664_PCI_H */