diff options
Diffstat (limited to 'src/pirq.h')
| -rw-r--r-- | src/pirq.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/pirq.h b/src/pirq.h new file mode 100644 index 0000000..293b81d --- /dev/null +++ b/src/pirq.h @@ -0,0 +1,58 @@ +#ifndef PIRQ_H_INCLUDED +#define PIRQ_H_INCLUDED + +/* + * PCI IRQ Routing Table dumper + * Copyright (c) 2006 Dell, Inc. + * by Matt Domsch <Matt_Domsch@dell.com> + * + * Based on the description of said table found at + * http://www.microsoft.com/hwdev/busbios/pciirq.htm + * Licensed under the GNU General Public license, version 2. + */ + +#include <stdint.h> +#include <stdlib.h> + +typedef unsigned char __u8; +typedef unsigned short int __u16; +typedef unsigned int __u32; + + +struct slot_entry { + __u8 bus; + __u8 device; + __u8 inta_link; + __u16 inta_irq; + __u8 intb_link; + __u16 intb_irq; + __u8 intc_link; + __u16 intc_irq; + __u8 intd_link; + __u16 intd_irq; + __u8 slot; + __u8 reserved; +} __attribute__((packed)); + +struct routing_table { + __u32 signature; + __u16 version; + __u16 size; + __u8 router_bus; + __u8 router_devfn; + __u16 exclusive_irqs; + __u32 compatable_router; + __u32 miniport_data; + __u8 reserved[11]; + __u8 checksum; + struct slot_entry slot[1]; +} __attribute__((packed)); + + +#define PCI_DEVICE(devfn) (((devfn) >> 3) & 0x1f) +#define PCI_FUNC(devfn) ((devfn) & 0x07) +extern struct routing_table * pirq_alloc_read_table(void); +extern void pirq_free_table(struct routing_table *table); +extern int pirq_pci_dev_to_slot(struct routing_table *table, int bus, int dev); + +#endif /* PIRQ_H_INCLUDED */ |