root/arch/x86/include/asm/pci.h

INCLUDED FROM

DEFINITIONS

1. pci_domain_nr
2. pci_proc_domain
3. pci_dma_burst_advice
4. early_quirks
5. __pcibus_to_node
6. cpumask_of_pcibus

#ifndef _ASM_X86_PCI_H
#define _ASM_X86_PCI_H

#include <linux/mm.h> /* for struct page */
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <asm/scatterlist.h>
#include <asm/io.h>
#include <asm/x86_init.h>

#ifdef __KERNEL__

struct pci_sysdata {
        int             domain;         /* PCI domain */
        int             node;           /* NUMA node */
#ifdef CONFIG_ACPI
        struct acpi_device *companion;  /* ACPI companion device */
#endif
#ifdef CONFIG_X86_64
        void            *iommu;         /* IOMMU private data */
#endif
};

extern int pci_routeirq;
extern int noioapicquirk;
extern int noioapicreroute;

#ifdef CONFIG_PCI

#ifdef CONFIG_PCI_DOMAINS
static inline int pci_domain_nr(struct pci_bus *bus)
{
        struct pci_sysdata *sd = bus->sysdata;
        return sd->domain;
}

static inline int pci_proc_domain(struct pci_bus *bus)
{
        return pci_domain_nr(bus);
}
#endif

/* 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 */

extern unsigned int pcibios_assign_all_busses(void);
extern int pci_legacy_init(void);
# ifdef CONFIG_ACPI
#  define x86_default_pci_init pci_acpi_init
# else
#  define x86_default_pci_init pci_legacy_init
# endif
#else
# define pcibios_assign_all_busses()    0
# define x86_default_pci_init           NULL
#endif

extern unsigned long pci_mem_start;
#define PCIBIOS_MIN_IO          0x1000
#define PCIBIOS_MIN_MEM         (pci_mem_start)

#define PCIBIOS_MIN_CARDBUS_IO  0x4000

extern int pcibios_enabled;
void pcibios_config_init(void);
void pcibios_scan_root(int bus);

void pcibios_set_master(struct pci_dev *dev);
struct irq_routing_table *pcibios_get_irq_routing_table(void);
int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq);


#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);


#ifdef CONFIG_PCI
extern void early_quirks(void);
static inline void pci_dma_burst_advice(struct pci_dev *pdev,
                                        enum pci_dma_burst_strategy *strat,
                                        unsigned long *strategy_parameter)
{
        *strat = PCI_DMA_BURST_INFINITY;
        *strategy_parameter = ~0UL;
}
#else
static inline void early_quirks(void) { }
#endif

extern void pci_iommu_alloc(void);

#ifdef CONFIG_PCI_MSI
/* implemented in arch/x86/kernel/apic/io_apic. */
struct msi_desc;
int native_setup_msi_irqs(struct pci_dev *dev, int nvec, int type);
void native_teardown_msi_irq(unsigned int irq);
void native_restore_msi_irqs(struct pci_dev *dev);
int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
                  unsigned int irq_base, unsigned int irq_offset);
#else
#define native_setup_msi_irqs           NULL
#define native_teardown_msi_irq         NULL
#endif

#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)

#endif  /* __KERNEL__ */

#ifdef CONFIG_X86_64
#include <asm/pci_64.h>
#endif

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

/* generic pci stuff */
#include <asm-generic/pci.h>

#ifdef CONFIG_NUMA
/* Returns the node based on pci bus */
static inline int __pcibus_to_node(const struct pci_bus *bus)
{
        const struct pci_sysdata *sd = bus->sysdata;

        return sd->node;
}

static inline const struct cpumask *
cpumask_of_pcibus(const struct pci_bus *bus)
{
        int node;

        node = __pcibus_to_node(bus);
        return (node == -1) ? cpu_online_mask :
                              cpumask_of_node(node);
}
#endif

struct pci_setup_rom {
        struct setup_data data;
        uint16_t vendor;
        uint16_t devid;
        uint64_t pcilen;
        unsigned long segment;
        unsigned long bus;
        unsigned long device;
        unsigned long function;
        uint8_t romdata[0];
};

#endif /* _ASM_X86_PCI_H */