/* *	$Id: pci.h,v 1.3 1999/02/28 20:23:11 mj Exp $ * *	The PCI Library * *	Copyright (c) 1997--1999 Martin Mares <mj@atrey.karlin.mff.cuni.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"#ifdef HAVE_OWN_HEADER_H#include "header.h"#else#include <linux/pci.h>#endif/* *	Types */#include <linux/types.h>typedef __u8 byte;typedef __u8 u8;typedef __u16 word;typedef __u16 u16;typedef __u32 u32;#ifdef HAVE_64BIT_ADDRESStypedef unsigned long long pciaddr_t;#elsetypedef unsigned long pciaddr_t;#endif/* *	PCI Access Structure */struct pci_methods;struct nl_entry;#define PCI_ACCESS_AUTO			0	/* Autodetection (params: none) */#define PCI_ACCESS_PROC_BUS_PCI		1	/* Linux /proc/bus/pci (params: path) */#define PCI_ACCESS_SYSCALLS		2	/* pciconfig_read() syscalls (params: none) */#define PCI_ACCESS_I386_TYPE1		3	/* i386 ports, type 1 (params: none) */#define PCI_ACCESS_I386_TYPE2		4	/* i386 ports, type 2 (params: none) */#define PCI_ACCESS_DUMP			5	/* Dump file (params: filename) */#define PCI_ACCESS_MAX			6struct 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 */};/* 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 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 */  word bus;				/* Higher byte can select host bridges */  byte dev, func;			/* Device and function */  /* These fields are set by pci_fill_info() */  word vendor_id, device_id;		/* Identity of the device */  int irq;				/* IRQ number */  pciaddr_t base_addr[6];		/* Base addresses */  pciaddr_t rom_base_addr;		/* Expansion ROM base address */  /* Fields used internally: */  struct pci_access *access;  struct pci_methods *methods;  byte *cache;				/* Cached information */  int cache_len;  int known_fields;			/* Set of info fields that is already known */  int hdrtype;				/* Direct methods: header type */  void *aux;				/* Auxillary data */};#define PCI_ADDR_IO_MASK (~(pciaddr_t) 0x3)#define PCI_ADDR_MEM_MASK (~(pciaddr_t) 0xf)byte pci_read_byte(struct pci_dev *, int pos); /* Access to configuration space */word 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, byte *buf, int len);int pci_write_byte(struct pci_dev *, int pos, byte data);int pci_write_word(struct pci_dev *, int pos, word data);int pci_write_long(struct pci_dev *, int pos, u32 data);int pci_write_block(struct pci_dev *, int pos, byte *buf, int len);void 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_RESCAN		0x10000void pci_setup_cache(struct pci_dev *, byte *cache, int len);/* *	Filters */struct pci_filter {  int 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);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_NUMERIC 0x10000#endif