2 * $Id: pci.h,v 1.3 1999/02/28 20:23:11 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>
34 #ifdef HAVE_64BIT_ADDRESS
35 typedef unsigned long long pciaddr_t;
37 typedef unsigned long pciaddr_t;
41 * PCI Access Structure
47 #define PCI_ACCESS_AUTO 0 /* Autodetection (params: none) */
48 #define PCI_ACCESS_PROC_BUS_PCI 1 /* Linux /proc/bus/pci (params: path) */
49 #define PCI_ACCESS_SYSCALLS 2 /* pciconfig_read() syscalls (params: none) */
50 #define PCI_ACCESS_I386_TYPE1 3 /* i386 ports, type 1 (params: none) */
51 #define PCI_ACCESS_I386_TYPE2 4 /* i386 ports, type 2 (params: none) */
52 #define PCI_ACCESS_DUMP 5 /* Dump file (params: filename) */
53 #define PCI_ACCESS_MAX 6
56 /* Options you can change: */
57 unsigned int method; /* Access method */
58 char *method_params[PCI_ACCESS_MAX]; /* Parameters for the methods */
59 int writeable; /* Open in read/write mode */
60 int buscentric; /* Bus-centric view of the world */
61 char *id_file_name; /* Name of ID list file */
62 int numeric_ids; /* Don't resolve device IDs to names */
63 int debugging; /* Turn on debugging messages */
65 /* Functions you can override: */
66 void (*error)(char *msg, ...); /* Write error message and quit */
67 void (*warning)(char *msg, ...); /* Write a warning message */
68 void (*debug)(char *msg, ...); /* Write a debugging message */
70 struct pci_dev *devices; /* Devices found on this bus */
72 /* Fields used internally: */
73 struct pci_methods *methods;
74 char *nl_list; /* Name list cache */
75 struct nl_entry **nl_hash;
76 int fd; /* proc: fd */
77 int fd_rw; /* proc: fd opened read-write */
78 struct pci_dev *cached_dev; /* proc: device the fd is for */
81 /* Initialize PCI access */
82 struct pci_access *pci_alloc(void);
83 void pci_init(struct pci_access *);
84 void pci_cleanup(struct pci_access *);
86 /* Scanning of devices */
87 void pci_scan_bus(struct pci_access *acc);
88 struct pci_dev *pci_get_dev(struct pci_access *acc, int bus, int dev, int func); /* Raw access to specified device */
89 void pci_free_dev(struct pci_dev *);
96 struct pci_dev *next; /* Next device in the chain */
97 word bus; /* Higher byte can select host bridges */
98 byte dev, func; /* Device and function */
100 /* These fields are set by pci_fill_info() */
101 word vendor_id, device_id; /* Identity of the device */
102 int irq; /* IRQ number */
103 pciaddr_t base_addr[6]; /* Base addresses */
104 pciaddr_t rom_base_addr; /* Expansion ROM base address */
106 /* Fields used internally: */
107 struct pci_access *access;
108 struct pci_methods *methods;
109 byte *cache; /* Cached information */
111 int known_fields; /* Set of info fields that is already known */
112 int hdrtype; /* Direct methods: header type */
113 void *aux; /* Auxillary data */
116 #define PCI_ADDR_IO_MASK (~(pciaddr_t) 0x3)
117 #define PCI_ADDR_MEM_MASK (~(pciaddr_t) 0xf)
119 byte pci_read_byte(struct pci_dev *, int pos); /* Access to configuration space */
120 word pci_read_word(struct pci_dev *, int pos);
121 u32 pci_read_long(struct pci_dev *, int pos);
122 int pci_read_block(struct pci_dev *, int pos, byte *buf, int len);
123 int pci_write_byte(struct pci_dev *, int pos, byte data);
124 int pci_write_word(struct pci_dev *, int pos, word data);
125 int pci_write_long(struct pci_dev *, int pos, u32 data);
126 int pci_write_block(struct pci_dev *, int pos, byte *buf, int len);
128 void pci_fill_info(struct pci_dev *, int flags); /* Fill in device information */
130 #define PCI_FILL_IDENT 1
131 #define PCI_FILL_IRQ 2
132 #define PCI_FILL_BASES 4
133 #define PCI_FILL_ROM_BASE 8
134 #define PCI_FILL_RESCAN 0x10000
136 void pci_setup_cache(struct pci_dev *, byte *cache, int len);
143 int bus, slot, func; /* -1 = ANY */
147 void pci_filter_init(struct pci_access *, struct pci_filter *);
148 char *pci_filter_parse_slot(struct pci_filter *, char *);
149 char *pci_filter_parse_id(struct pci_filter *, char *);
150 int pci_filter_match(struct pci_filter *, struct pci_dev *);
156 char *pci_lookup_name(struct pci_access *a, char *buf, int size, int flags, u32 arg1, u32 arg2);
157 void pci_free_name_list(struct pci_access *a);
159 #define PCI_LOOKUP_VENDOR 1
160 #define PCI_LOOKUP_DEVICE 2
161 #define PCI_LOOKUP_CLASS 4
162 #define PCI_LOOKUP_SUBSYSTEM 8
163 #define PCI_LOOKUP_NUMERIC 0x10000