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Commit | Line | Data |
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1da177e4 LT |
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; | |
120bb424 | 30 | extern unsigned long pirq_table_addr; |
1da177e4 LT |
31 | |
32 | /* pci-i386.c */ | |
33 | ||
34 | extern unsigned int pcibios_max_latency; | |
35 | ||
36 | void pcibios_resource_survey(void); | |
37 | int pcibios_enable_resources(struct pci_dev *, int); | |
38 | ||
39 | /* pci-pc.c */ | |
40 | ||
41 | extern int pcibios_last_bus; | |
42 | extern struct pci_bus *pci_root_bus; | |
43 | extern struct pci_ops pci_root_ops; | |
44 | ||
45 | /* pci-irq.c */ | |
46 | ||
47 | struct irq_info { | |
48 | u8 bus, devfn; /* Bus, device and function */ | |
49 | struct { | |
50 | u8 link; /* IRQ line ID, chipset dependent, 0=not routed */ | |
51 | u16 bitmap; /* Available IRQs */ | |
52 | } __attribute__((packed)) irq[4]; | |
53 | u8 slot; /* Slot number, 0=onboard */ | |
54 | u8 rfu; | |
55 | } __attribute__((packed)); | |
56 | ||
57 | struct irq_routing_table { | |
58 | u32 signature; /* PIRQ_SIGNATURE should be here */ | |
59 | u16 version; /* PIRQ_VERSION */ | |
60 | u16 size; /* Table size in bytes */ | |
61 | u8 rtr_bus, rtr_devfn; /* Where the interrupt router lies */ | |
62 | u16 exclusive_irqs; /* IRQs devoted exclusively to PCI usage */ | |
63 | u16 rtr_vendor, rtr_device; /* Vendor and device ID of interrupt router */ | |
64 | u32 miniport_data; /* Crap */ | |
65 | u8 rfu[11]; | |
66 | u8 checksum; /* Modulo 256 checksum must give zero */ | |
67 | struct irq_info slots[0]; | |
68 | } __attribute__((packed)); | |
69 | ||
70 | extern unsigned int pcibios_irq_mask; | |
71 | ||
72 | extern int pcibios_scanned; | |
73 | extern spinlock_t pci_config_lock; | |
74 | ||
75 | extern int (*pcibios_enable_irq)(struct pci_dev *dev); | |
87bec66b | 76 | extern void (*pcibios_disable_irq)(struct pci_dev *dev); |