You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
76 lines
1.9 KiB
76 lines
1.9 KiB
/*
|
|
* 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);
|
|
|
|
/* 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);
|
|
|