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- /*
- * Low-Level PCI Access for i386 machines.
- *
- * (c) 1999 Martin Mares <mj@ucw.cz>
- */
- #undef DEBUG
- #ifdef DEBUG
- #define DBG(x...) printk(x)
- #else
- #define DBG(x...)
- #endif
- #define PCI_PROBE_BIOS 0x0001
- #define PCI_PROBE_CONF1 0x0002
- #define PCI_PROBE_CONF2 0x0004
- #define PCI_PROBE_MMCONF 0x0008
- #define PCI_PROBE_MASK 0x000f
- #define PCI_NO_SORT 0x0100
- #define PCI_BIOS_SORT 0x0200
- #define PCI_NO_CHECKS 0x0400
- #define PCI_USE_PIRQ_MASK 0x0800
- #define PCI_ASSIGN_ROMS 0x1000
- #define PCI_BIOS_IRQ_SCAN 0x2000
- #define PCI_ASSIGN_ALL_BUSSES 0x4000
- extern unsigned int pci_probe;
- extern unsigned long pirq_table_addr;
- /* pci-i386.c */
- extern unsigned int pcibios_max_latency;
- void pcibios_resource_survey(void);
- int pcibios_enable_resources(struct pci_dev *, int);
- void pcibios_disable_resources(struct pci_dev *);
- /* pci-pc.c */
- extern int pcibios_last_bus;
- extern struct pci_bus *pci_root_bus;
- extern struct pci_ops pci_root_ops;
- /* pci-irq.c */
- struct irq_info {
- u8 bus, devfn; /* Bus, device and function */
- struct {
- u8 link; /* IRQ line ID, chipset dependent, 0=not routed */
- u16 bitmap; /* Available IRQs */
- } __attribute__((packed)) irq[4];
- u8 slot; /* Slot number, 0=onboard */
- u8 rfu;
- } __attribute__((packed));
- struct irq_routing_table {
- u32 signature; /* PIRQ_SIGNATURE should be here */
- u16 version; /* PIRQ_VERSION */
- u16 size; /* Table size in bytes */
- u8 rtr_bus, rtr_devfn; /* Where the interrupt router lies */
- u16 exclusive_irqs; /* IRQs devoted exclusively to PCI usage */
- u16 rtr_vendor, rtr_device; /* Vendor and device ID of interrupt router */
- u32 miniport_data; /* Crap */
- u8 rfu[11];
- u8 checksum; /* Modulo 256 checksum must give zero */
- struct irq_info slots[0];
- } __attribute__((packed));
- extern unsigned int pcibios_irq_mask;
- extern int pcibios_scanned;
- extern spinlock_t pci_config_lock;
- extern int (*pcibios_enable_irq)(struct pci_dev *dev);
- extern void (*pcibios_disable_irq)(struct pci_dev *dev);
- extern int pci_conf1_write(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 value);
- extern int pci_conf1_read(unsigned int seg, unsigned int bus,
- unsigned int devfn, int reg, int len, u32 *value);
- extern void pci_direct_init(void);
- extern void pci_pcbios_init(void);
- extern void pci_mmcfg_init(void);
- extern void pcibios_sort(void);
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