Subversion Repositories Kolibri OS

/*

 *  For PCI devices, the region numbers are assigned this way:

 */

enum {

    /* #0-5: standard PCI resources */

    PCI_STD_RESOURCES,

    PCI_STD_RESOURCE_END = 5,

    /* #6: expansion ROM resource */

    PCI_ROM_RESOURCE,

    /* device specific resources */

#ifdef CONFIG_PCI_IOV

    PCI_IOV_RESOURCES,

    PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1,

#endif

    /* resources assigned to buses behind the bridge */

#define PCI_BRIDGE_RESOURCE_NUM 4

    PCI_BRIDGE_RESOURCES,

    PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES +

                  PCI_BRIDGE_RESOURCE_NUM - 1,

    /* total resources associated with a PCI device */

    PCI_NUM_RESOURCES,

    /* preserve this for compatibility */

    DEVICE_COUNT_RESOURCE

};

typedef unsigned short __bitwise pci_bus_flags_t;

enum pci_bus_flags {

    PCI_BUS_FLAGS_NO_MSI   = (__force pci_bus_flags_t) 1,

    PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2,

};

struct pci_sysdata

{

    int             domain;         /* PCI domain */

    int             node;           /* NUMA node */

#ifdef CONFIG_X86_64

    void            *iommu;         /* IOMMU private data */

#endif

};

struct pci_bus;

struct pci_ops

{

    int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);

    int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);

};

struct pci_bus {

    struct list_head node;      /* node in list of buses */

    struct pci_bus  *parent;    /* parent bus this bridge is on */

    struct list_head children;  /* list of child buses */

    struct list_head devices;   /* list of devices on this bus */

    struct pci_dev  *self;      /* bridge device as seen by parent */

    struct list_head slots;     /* list of slots on this bus */

    struct resource *resource[PCI_BRIDGE_RESOURCE_NUM];

    struct list_head resources; /* address space routed to this bus */

    struct pci_ops  *ops;       /* configuration access functions */

    void        *sysdata;       /* hook for sys-specific extension */

    unsigned char   number;     /* bus number */

    unsigned char   primary;    /* number of primary bridge */

    unsigned char   secondary;  /* number of secondary bridge */

    unsigned char   subordinate;    /* max number of subordinate buses */

    char        name[48];

    unsigned short  bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */

    pci_bus_flags_t bus_flags;  /* Inherited by child busses */

//    struct device       *bridge;

//    struct device       dev;

//    struct bin_attribute    *legacy_io; /* legacy I/O for this bus */

//    struct bin_attribute    *legacy_mem; /* legacy mem */

    unsigned int        is_added:1;

};

#define pci_bus_b(n)    list_entry(n, struct pci_bus, node)

#define to_pci_bus(n)   container_of(n, struct pci_bus, dev)

static inline int pci_domain_nr(struct pci_bus *bus)

{

    struct pci_sysdata *sd = bus->sysdata;

    return sd->domain;

}

#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))

int pci_set_dma_mask(struct pci_dev *dev, u64 mask);

struct pci_bus * pci_create_bus(int bus, struct pci_ops *ops, void *sysdata);