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587 giacomo 1
/*
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 *      Low-Level PCI Access for i386 machines.
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 *
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 *      (c) 1999 Martin Mares <mj@ucw.cz>
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 */
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//#define DEBUG
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#ifdef DEBUG
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#define DBG(x...) printk(x)
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#else
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#define DBG(x...)
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#endif
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#define PCI_PROBE_BIOS          0x0001
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#define PCI_PROBE_CONF1         0x0002
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#define PCI_PROBE_CONF2         0x0004
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#define PCI_NO_SORT             0x0100
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#define PCI_BIOS_SORT           0x0200
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#define PCI_NO_CHECKS           0x0400
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#define PCI_USE_PIRQ_MASK       0x0800
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#define PCI_ASSIGN_ROMS         0x1000
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#define PCI_BIOS_IRQ_SCAN       0x2000
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#define PCI_ASSIGN_ALL_BUSSES   0x4000
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#define PCI_NO_ACPI_ROUTING     0x8000
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extern unsigned int pci_probe;
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/* pci-i386.c */
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extern unsigned int pcibios_max_latency;
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void pcibios_resource_survey(void);
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int pcibios_enable_resources(struct pci_dev *, int);
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/* pci-pc.c */
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extern int pcibios_last_bus;
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extern struct pci_bus *pci_root_bus;
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extern struct pci_ops pci_root_ops;
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/* pci-irq.c */
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struct irq_info {
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        u8 bus, devfn;                  /* Bus, device and function */
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        struct {
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                u8 link;                /* IRQ line ID, chipset dependent, 0=not routed */
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                u16 bitmap;             /* Available IRQs */
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        } __attribute__((packed)) irq[4];
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        u8 slot;                        /* Slot number, 0=onboard */
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        u8 rfu;
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} __attribute__((packed));
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struct irq_routing_table {
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        u32 signature;                  /* PIRQ_SIGNATURE should be here */
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        u16 version;                    /* PIRQ_VERSION */
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        u16 size;                       /* Table size in bytes */
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        u8 rtr_bus, rtr_devfn;          /* Where the interrupt router lies */
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        u16 exclusive_irqs;             /* IRQs devoted exclusively to PCI usage */
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        u16 rtr_vendor, rtr_device;     /* Vendor and device ID of interrupt router */
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        u32 miniport_data;              /* Crap */
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        u8 rfu[11];
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        u8 checksum;                    /* Modulo 256 checksum must give zero */
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        struct irq_info slots[0];
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} __attribute__((packed));
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extern unsigned int pcibios_irq_mask;
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extern int pcibios_scanned;
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extern spinlock_t pci_config_lock;
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int pirq_enable_irq(struct pci_dev *dev);
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extern int (*pcibios_enable_irq)(struct pci_dev *dev);