#ifndef __ALPHA_PCI_H
#define __ALPHA_PCI_H

#ifdef __KERNEL__

#include <linux/spinlock.h>
#include <linux/dma-mapping.h>
#include <asm/scatterlist.h>
#include <asm/machvec.h>
#include <asm-generic/pci-bridge.h>

/*
* The following structure is used to manage multiple PCI busses.
*/

struct pci_dev;
struct pci_bus;
struct resource;
struct pci_iommu_arena;
struct page;

/* A controller. Used to manage multiple PCI busses. */

struct pci_controller {
struct pci_controller *next;
struct pci_bus *bus;
struct resource *io_space;
struct resource *mem_space;

/* The following are for reporting to userland. The invariant is
that if we report a BWX-capable dense memory, we do not report
a sparse memory at all, even if it exists. */
unsigned long sparse_mem_base;
unsigned long dense_mem_base;
unsigned long sparse_io_base;
unsigned long dense_io_base;

/* This one's for the kernel only. It's in KSEG somewhere. */
unsigned long config_space_base;

unsigned int index;
/* For compatibility with current (as of July 2003) pciutils
and XFree86. Eventually will be removed. */
unsigned int need_domain_info;

struct pci_iommu_arena *sg_pci;
struct pci_iommu_arena *sg_isa;

void *sysdata;
};

/* Override the logic in pci_scan_bus for skipping already-configured
bus numbers. */

#define pcibios_assign_all_busses() 1

#define PCIBIOS_MIN_IO alpha_mv.min_io_address
#define PCIBIOS_MIN_MEM alpha_mv.min_mem_address

extern void pcibios_set_master(struct pci_dev *dev);

extern inline void pcibios_penalize_isa_irq(int irq, int active)
{
/* We don't do dynamic PCI IRQ allocation */
}

/* IOMMU controls. */

/* 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

#ifdef CONFIG_PCI

/* implement the pci_ DMA API in terms of the generic device dma_ one */
#include <asm-generic/pci-dma-compat.h>

static inline void pci_dma_burst_advice(struct pci_dev *pdev,
enum pci_dma_burst_strategy *strat,
unsigned long *strategy_parameter)
{
unsigned long cacheline_size;
u8 byte;

pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
if (byte == 0)
cacheline_size = 1024;
else
cacheline_size = (int) byte * 4;

*strat = PCI_DMA_BURST_BOUNDARY;
*strategy_parameter = cacheline_size;
}
#endif

/* TODO: integrate with include/asm-generic/pci.h ? */
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
return channel ? 15 : 14;
}

#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index

static inline int pci_proc_domain(struct pci_bus *bus)
{
struct pci_controller *hose = bus->sysdata;
return hose->need_domain_info;
}

#endif /* __KERNEL__ */

/* Values for the `which' argument to sys_pciconfig_iobase. */
#define IOBASE_HOSE 0
#define IOBASE_SPARSE_MEM 1
#define IOBASE_DENSE_MEM 2
#define IOBASE_SPARSE_IO 3
#define IOBASE_DENSE_IO 4
#define IOBASE_ROOT_BUS 5
#define IOBASE_FROM_HOSE 0x10000

extern struct pci_dev *isa_bridge;

extern int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val,
size_t count);
extern int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val,
size_t count);
extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
struct vm_area_struct *vma,
enum pci_mmap_state mmap_state);
extern void pci_adjust_legacy_attr(struct pci_bus *bus,
enum pci_mmap_state mmap_type);
#define HAVE_PCI_LEGACY 1

extern int pci_create_resource_files(struct pci_dev *dev);
extern void pci_remove_resource_files(struct pci_dev *dev);

#endif /* __ALPHA_PCI_H */