Viewing file:  pci.h (4.86 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/*
* The PCI Library
*
* Copyright (c) 1997--2004 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _PCI_LIB_H
#define _PCI_LIB_H
#include "config.h"
#include "header.h"
#include "types.h"
/*
* PCI Access Structure
*/
struct pci_methods;
struct nl_entry;
enum pci_access_type {
/* Known access methods, remember to update access.c as well */
PCI_ACCESS_AUTO, /* Autodetection (params: none) */
PCI_ACCESS_SYS_BUS_PCI, /* Linux /sys/bus/pci (params: path) */
PCI_ACCESS_PROC_BUS_PCI, /* Linux /proc/bus/pci (params: path) */
PCI_ACCESS_I386_TYPE1, /* i386 ports, type 1 (params: none) */
PCI_ACCESS_I386_TYPE2, /* i386 ports, type 2 (params: none) */
PCI_ACCESS_FBSD_DEVICE, /* FreeBSD /dev/pci (params: path) */
PCI_ACCESS_AIX_DEVICE, /* /dev/pci0, /dev/bus0, etc. */
PCI_ACCESS_NBSD_LIBPCI, /* NetBSD libpci */
PCI_ACCESS_DUMP, /* Dump file (params: filename) */
PCI_ACCESS_MAX
};
struct pci_access {
/* Options you can change: */
unsigned int method; /* Access method */
char *method_params[PCI_ACCESS_MAX]; /* Parameters for the methods */
int writeable; /* Open in read/write mode */
int buscentric; /* Bus-centric view of the world */
char *id_file_name; /* Name of ID list file */
int numeric_ids; /* Don't resolve device IDs to names */
int debugging; /* Turn on debugging messages */
/* Functions you can override: */
void (*error)(char *msg, ...); /* Write error message and quit */
void (*warning)(char *msg, ...); /* Write a warning message */
void (*debug)(char *msg, ...); /* Write a debugging message */
struct pci_dev *devices; /* Devices found on this bus */
/* Fields used internally: */
struct pci_methods *methods;
char *nl_list; /* Name list cache */
struct nl_entry **nl_hash;
int fd; /* proc: fd */
int fd_rw; /* proc: fd opened read-write */
struct pci_dev *cached_dev; /* proc: device the fd is for */
int fd_pos; /* proc: current position */
};
/* Initialize PCI access */
struct pci_access *pci_alloc(void);
void pci_init(struct pci_access *);
void pci_cleanup(struct pci_access *);
/* Scanning of devices */
void pci_scan_bus(struct pci_access *acc);
struct pci_dev *pci_get_dev(struct pci_access *acc, int domain, int bus, int dev, int func); /* Raw access to specified device */
void pci_free_dev(struct pci_dev *);
/*
* Devices
*/
struct pci_dev {
struct pci_dev *next; /* Next device in the chain */
u16 domain; /* PCI domain (host bridge) */
u8 bus, dev, func; /* Bus inside domain, device and function */
/* These fields are set by pci_fill_info() */
int known_fields; /* Set of info fields already known */
u16 vendor_id, device_id; /* Identity of the device */
u16 device_class; /* PCI device class */
int irq; /* IRQ number */
pciaddr_t base_addr[6]; /* Base addresses */
pciaddr_t size[6]; /* Region sizes */
pciaddr_t rom_base_addr; /* Expansion ROM base address */
pciaddr_t rom_size; /* Expansion ROM size */
/* Fields used internally: */
struct pci_access *access;
struct pci_methods *methods;
u8 *cache; /* Cached config registers */
int cache_len;
int hdrtype; /* Cached low 7 bits of header type, -1 if unknown */
void *aux; /* Auxillary data */
};
#define PCI_ADDR_IO_MASK (~(pciaddr_t) 0x3)
#define PCI_ADDR_MEM_MASK (~(pciaddr_t) 0xf)
u8 pci_read_byte(struct pci_dev *, int pos); /* Access to configuration space */
u16 pci_read_word(struct pci_dev *, int pos);
u32 pci_read_long(struct pci_dev *, int pos);
int pci_read_block(struct pci_dev *, int pos, u8 *buf, int len);
int pci_write_byte(struct pci_dev *, int pos, u8 data);
int pci_write_word(struct pci_dev *, int pos, u16 data);
int pci_write_long(struct pci_dev *, int pos, u32 data);
int pci_write_block(struct pci_dev *, int pos, u8 *buf, int len);
int pci_fill_info(struct pci_dev *, int flags); /* Fill in device information */
#define PCI_FILL_IDENT 1
#define PCI_FILL_IRQ 2
#define PCI_FILL_BASES 4
#define PCI_FILL_ROM_BASE 8
#define PCI_FILL_SIZES 16
#define PCI_FILL_CLASS 32
#define PCI_FILL_RESCAN 0x10000
void pci_setup_cache(struct pci_dev *, u8 *cache, int len);
/*
* Filters
*/
struct pci_filter {
int domain, bus, slot, func; /* -1 = ANY */
int vendor, device;
};
void pci_filter_init(struct pci_access *, struct pci_filter *);
char *pci_filter_parse_slot(struct pci_filter *, char *);
char *pci_filter_parse_id(struct pci_filter *, char *);
int pci_filter_match(struct pci_filter *, struct pci_dev *);
/*
* Device names
*/
char *pci_lookup_name(struct pci_access *a, char *buf, int size, int flags, u32 arg1, u32 arg2, u32 arg3, u32 arg4);
void pci_free_name_list(struct pci_access *a);
#define PCI_LOOKUP_VENDOR 1
#define PCI_LOOKUP_DEVICE 2
#define PCI_LOOKUP_CLASS 4
#define PCI_LOOKUP_SUBSYSTEM 8
#define PCI_LOOKUP_PROGIF 16
#define PCI_LOOKUP_NUMERIC 0x10000
#endif
|