projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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); |
| 928cf8c6 AK |
77 | |
| 78 | extern int pci_conf1_write(unsigned int seg, unsigned int bus, | |
| 79 | unsigned int devfn, int reg, int len, u32 value); | |
| 80 | extern int pci_conf1_read(unsigned int seg, unsigned int bus, | |
| 81 | unsigned int devfn, int reg, int len, u32 *value); | |
| 82 | ||
| 92c05fc1 AK |
83 | extern void pci_direct_init(void); |
| 84 | extern void pci_pcbios_init(void); | |
| 85 | extern void pci_mmcfg_init(void); | |
| 928cf8c6 | 86 |