2 * $Id: pci.h,v 1.1 1999/01/22 21:05:34 mj Exp $
6 * Copyright (c) 1997--1999 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
8 * Can be freely distributed and used under the terms of the GNU GPL.
16 #ifdef HAVE_OWN_HEADER_H
19 #include <linux/pci.h>
26 #include <linux/types.h>
35 * PCI Access Structure
41 #define PCI_ACCESS_AUTO 0 /* Autodetection (params: none) */
42 #define PCI_ACCESS_PROC_BUS_PCI 1 /* Linux /proc/bus/pci (params: path) */
43 #define PCI_ACCESS_SYSCALLS 2 /* pciconfig_read() syscalls (params: none) */
44 #define PCI_ACCESS_I386_TYPE1 3 /* i386 ports, type 1 (params: none) */
45 #define PCI_ACCESS_I386_TYPE2 4 /* i386 ports, type 2 (params: none) */
46 #define PCI_ACCESS_DUMP 5 /* Dump file (params: filename) */
47 #define PCI_ACCESS_MAX 6
50 /* Options you can change: */
51 unsigned int method; /* Access method */
52 char *method_params[PCI_ACCESS_MAX]; /* Parameters for the methods */
53 int writeable; /* Open in read/write mode */
54 int buscentric; /* Bus-centric view of the world */
55 char *id_file_name; /* Name of ID list file */
56 int numeric_ids; /* Don't resolve device IDs to names */
57 int debugging; /* Turn on debugging messages */
59 /* Functions you can override: */
60 void (*error)(char *msg, ...); /* Write error message and quit */
61 void (*warning)(char *msg, ...); /* Write a warning message */
62 void (*debug)(char *msg, ...); /* Write a debugging message */
64 struct pci_dev *devices; /* Devices found on this bus */
66 /* Fields used internally: */
67 struct pci_methods *methods;
68 char *nl_list; /* Name list cache */
69 struct nl_entry **nl_hash;
70 int fd; /* proc: fd */
71 int fd_rw; /* proc: fd opened read-write */
72 struct pci_dev *cached_dev; /* proc: device the fd is for */
75 /* Initialize PCI access */
76 struct pci_access *pci_alloc(void);
77 void pci_init(struct pci_access *);
78 void pci_cleanup(struct pci_access *);
80 /* Scanning of devices */
81 void pci_scan_bus(struct pci_access *acc);
82 struct pci_dev *pci_get_dev(struct pci_access *acc, int bus, int dev, int func); /* Raw access to specified device */
83 void pci_free_dev(struct pci_dev *);
90 struct pci_dev *next; /* Next device in the chain */
91 word bus; /* Higher byte can select host bridges */
92 byte dev, func; /* Device and function */
94 /* These fields are set by pci_fill_info() */
95 word vendor_id, device_id; /* Identity of the device */
96 int irq; /* IRQ number */
97 unsigned long base_addr[6]; /* Base addresses */
98 unsigned long rom_base_addr; /* Expansion ROM base address */
100 /* Fields used internally: */
101 struct pci_access *access;
102 struct pci_methods *methods;
103 int known_fields; /* Set of info fields that is already known */
104 int hdrtype; /* Direct methods: header type */
105 void *aux; /* Auxillary data */
108 byte pci_read_byte(struct pci_dev *, int pos); /* Access to configuration space */
109 word pci_read_word(struct pci_dev *, int pos);
110 u32 pci_read_long(struct pci_dev *, int pos);
111 int pci_read_block(struct pci_dev *, int pos, byte *buf, int len);
112 int pci_write_byte(struct pci_dev *, int pos, byte data);
113 int pci_write_word(struct pci_dev *, int pos, word data);
114 int pci_write_long(struct pci_dev *, int pos, u32 data);
115 int pci_write_block(struct pci_dev *, int pos, byte *buf, int len);
117 void pci_fill_info(struct pci_dev *, int flags); /* Fill in device information */
119 #define PCI_FILL_IDENT 1
120 #define PCI_FILL_IRQ 2
121 #define PCI_FILL_BASES 4
122 #define PCI_FILL_ROM_BASE 8
123 #define PCI_FILL_RESCAN 0x10000
129 void pci_setup_buffer(struct pci_dev *, byte *buf);
136 int bus, slot, func; /* -1 = ANY */
140 void pci_filter_init(struct pci_access *, struct pci_filter *);
141 char *pci_filter_parse_slot(struct pci_filter *, char *);
142 char *pci_filter_parse_id(struct pci_filter *, char *);
143 int pci_filter_match(struct pci_filter *, struct pci_dev *);
149 char *pci_lookup_name(struct pci_access *a, char *buf, int size, int flags, u32 arg1, u32 arg2);
150 void pci_free_name_list(struct pci_access *a);
152 #define PCI_LOOKUP_VENDOR 1
153 #define PCI_LOOKUP_DEVICE 2
154 #define PCI_LOOKUP_CLASS 4
155 #define PCI_LOOKUP_SUBSYSTEM 8
156 #define PCI_LOOKUP_NUMERIC 0x10000