| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Low-Level PCI Access for i386 machines. |
| 3 | * |
| 4 | * (c) 1999 Martin Mares <mj@ucw.cz> |
| 5 | */ |
| 6 | |
| 7 | #undef DEBUG |
| 8 | |
| 9 | #ifdef DEBUG |
| 10 | #define DBG(x...) printk(x) |
| 11 | #else |
| 12 | #define DBG(x...) |
| 13 | #endif |
| 14 | |
| 15 | #define PCI_PROBE_BIOS 0x0001 |
| 16 | #define PCI_PROBE_CONF1 0x0002 |
| 17 | #define PCI_PROBE_CONF2 0x0004 |
| 18 | #define PCI_PROBE_MMCONF 0x0008 |
| 19 | #define PCI_PROBE_MASK 0x000f |
| 20 | |
| 21 | #define PCI_NO_SORT 0x0100 |
| 22 | #define PCI_BIOS_SORT 0x0200 |
| 23 | #define PCI_NO_CHECKS 0x0400 |
| 24 | #define PCI_USE_PIRQ_MASK 0x0800 |
| 25 | #define PCI_ASSIGN_ROMS 0x1000 |
| 26 | #define PCI_BIOS_IRQ_SCAN 0x2000 |
| 27 | #define PCI_ASSIGN_ALL_BUSSES 0x4000 |
| 28 | |
| 29 | extern unsigned int pci_probe; |
| 30 | |
| 31 | /* pci-i386.c */ |
| 32 | |
| 33 | extern unsigned int pcibios_max_latency; |
| 34 | |
| 35 | void pcibios_resource_survey(void); |
| 36 | int pcibios_enable_resources(struct pci_dev *, int); |
| 37 | |
| 38 | /* pci-pc.c */ |
| 39 | |
| 40 | extern int pcibios_last_bus; |
| 41 | extern struct pci_bus *pci_root_bus; |
| 42 | extern struct pci_ops pci_root_ops; |
| 43 | |
| 44 | /* pci-irq.c */ |
| 45 | |
| 46 | struct irq_info { |
| 47 | u8 bus, devfn; /* Bus, device and function */ |
| 48 | struct { |
| 49 | u8 link; /* IRQ line ID, chipset dependent, 0=not routed */ |
| 50 | u16 bitmap; /* Available IRQs */ |
| 51 | } __attribute__((packed)) irq[4]; |
| 52 | u8 slot; /* Slot number, 0=onboard */ |
| 53 | u8 rfu; |
| 54 | } __attribute__((packed)); |
| 55 | |
| 56 | struct irq_routing_table { |
| 57 | u32 signature; /* PIRQ_SIGNATURE should be here */ |
| 58 | u16 version; /* PIRQ_VERSION */ |
| 59 | u16 size; /* Table size in bytes */ |
| 60 | u8 rtr_bus, rtr_devfn; /* Where the interrupt router lies */ |
| 61 | u16 exclusive_irqs; /* IRQs devoted exclusively to PCI usage */ |
| 62 | u16 rtr_vendor, rtr_device; /* Vendor and device ID of interrupt router */ |
| 63 | u32 miniport_data; /* Crap */ |
| 64 | u8 rfu[11]; |
| 65 | u8 checksum; /* Modulo 256 checksum must give zero */ |
| 66 | struct irq_info slots[0]; |
| 67 | } __attribute__((packed)); |
| 68 | |
| 69 | extern unsigned int pcibios_irq_mask; |
| 70 | |
| 71 | extern int pcibios_scanned; |
| 72 | extern spinlock_t pci_config_lock; |
| 73 | |
| 74 | extern int (*pcibios_enable_irq)(struct pci_dev *dev); |
| David Shaohua Li | 87bec66 | 2005-07-27 23:02:00 -0400 | [diff] [blame^] | 75 | extern void (*pcibios_disable_irq)(struct pci_dev *dev); |