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git.ipfire.org Git - thirdparty/pciutils.git/blob - lib/pci.h
4 * Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
6 * Can be freely distributed and used under the terms of the GNU GPL.
19 #define PCI_LIB_VERSION 0x030000
26 * PCI Access Structure
31 enum pci_access_type
{
32 /* Known access methods, remember to update access.c as well */
33 PCI_ACCESS_AUTO
, /* Autodetection */
34 PCI_ACCESS_SYS_BUS_PCI
, /* Linux /sys/bus/pci */
35 PCI_ACCESS_PROC_BUS_PCI
, /* Linux /proc/bus/pci */
36 PCI_ACCESS_I386_TYPE1
, /* i386 ports, type 1 */
37 PCI_ACCESS_I386_TYPE2
, /* i386 ports, type 2 */
38 PCI_ACCESS_FBSD_DEVICE
, /* FreeBSD /dev/pci */
39 PCI_ACCESS_AIX_DEVICE
, /* /dev/pci0, /dev/bus0, etc. */
40 PCI_ACCESS_NBSD_LIBPCI
, /* NetBSD libpci */
41 PCI_ACCESS_OBSD_DEVICE
, /* OpenBSD /dev/pci */
42 PCI_ACCESS_DUMP
, /* Dump file */
47 /* Options you can change: */
48 unsigned int method
; /* Access method */
49 int writeable
; /* Open in read/write mode */
50 int buscentric
; /* Bus-centric view of the world */
52 char *id_file_name
; /* Name of ID list file (use pci_set_name_list_path()) */
53 int free_id_name
; /* Set if id_file_name is malloced */
54 int numeric_ids
; /* Enforce PCI_LOOKUP_NUMERIC (>1 => PCI_LOOKUP_MIXED) */
56 unsigned int id_lookup_mode
; /* pci_lookup_mode flags which are set automatically */
57 /* Default: PCI_LOOKUP_CACHE */
59 int debugging
; /* Turn on debugging messages */
61 /* Functions you can override: */
62 void (*error
)(char *msg
, ...) PCI_PRINTF(1,2); /* Write error message and quit */
63 void (*warning
)(char *msg
, ...) PCI_PRINTF(1,2); /* Write a warning message */
64 void (*debug
)(char *msg
, ...) PCI_PRINTF(1,2); /* Write a debugging message */
66 struct pci_dev
*devices
; /* Devices found on this bus */
68 /* Fields used internally: */
69 struct pci_methods
*methods
;
70 struct pci_param
*params
;
71 struct id_entry
**id_hash
; /* names.c */
72 struct id_bucket
*current_id_bucket
;
74 int id_cache_status
; /* 0=not read, 1=read, 2=dirty */
75 int fd
; /* proc: fd */
76 int fd_rw
; /* proc: fd opened read-write */
77 struct pci_dev
*cached_dev
; /* proc: device the fd is for */
78 int fd_pos
; /* proc: current position */
81 /* Initialize PCI access */
82 struct pci_access
*pci_alloc(void) PCI_ABI
;
83 void pci_init(struct pci_access
*) PCI_ABI
;
84 void pci_cleanup(struct pci_access
*) PCI_ABI
;
86 /* Scanning of devices */
87 void pci_scan_bus(struct pci_access
*acc
) PCI_ABI
;
88 struct pci_dev
*pci_get_dev(struct pci_access
*acc
, int domain
, int bus
, int dev
, int func
) PCI_ABI
; /* Raw access to specified device */
89 void pci_free_dev(struct pci_dev
*) PCI_ABI
;
91 /* Names of access methods */
92 int pci_lookup_method(char *name
) PCI_ABI
; /* Returns -1 if not found */
93 char *pci_get_method_name(int index
) PCI_ABI
; /* Returns "" if unavailable, NULL if index out of range */
100 struct pci_param
*next
; /* Please use pci_walk_params() for traversing the list */
101 char *param
; /* Name of the parameter */
102 char *value
; /* Value of the parameter */
103 int value_malloced
; /* used internally */
104 char *help
; /* Explanation of the parameter */
107 char *pci_get_param(struct pci_access
*acc
, char *param
) PCI_ABI
;
108 int pci_set_param(struct pci_access
*acc
, char *param
, char *value
) PCI_ABI
; /* 0 on success, -1 if no such parameter */
109 /* To traverse the list, call pci_walk_params repeatedly, first with prev=NULL, and do not modify the parameters during traversal. */
110 struct pci_param
*pci_walk_params(struct pci_access
*acc
, struct pci_param
*prev
) PCI_ABI
;
117 struct pci_dev
*next
; /* Next device in the chain */
118 u16 domain
; /* PCI domain (host bridge) */
119 u8 bus
, dev
, func
; /* Bus inside domain, device and function */
121 /* These fields are set by pci_fill_info() */
122 int known_fields
; /* Set of info fields already known */
123 u16 vendor_id
, device_id
; /* Identity of the device */
124 u16 device_class
; /* PCI device class */
125 int irq
; /* IRQ number */
126 pciaddr_t base_addr
[6]; /* Base addresses */
127 pciaddr_t size
[6]; /* Region sizes */
128 pciaddr_t rom_base_addr
; /* Expansion ROM base address */
129 pciaddr_t rom_size
; /* Expansion ROM size */
131 /* Fields used internally: */
132 struct pci_access
*access
;
133 struct pci_methods
*methods
;
134 u8
*cache
; /* Cached config registers */
136 int hdrtype
; /* Cached low 7 bits of header type, -1 if unknown */
137 void *aux
; /* Auxillary data */
139 /* Another field set by pci_fill_info() */
140 struct pci_cap
*first_cap
; /* List of capabilities */
143 #define PCI_ADDR_IO_MASK (~(pciaddr_t) 0x3)
144 #define PCI_ADDR_MEM_MASK (~(pciaddr_t) 0xf)
146 u8
pci_read_byte(struct pci_dev
*, int pos
) PCI_ABI
; /* Access to configuration space */
147 u16
pci_read_word(struct pci_dev
*, int pos
) PCI_ABI
;
148 u32
pci_read_long(struct pci_dev
*, int pos
) PCI_ABI
;
149 int pci_read_block(struct pci_dev
*, int pos
, u8
*buf
, int len
) PCI_ABI
;
150 int pci_write_byte(struct pci_dev
*, int pos
, u8 data
) PCI_ABI
;
151 int pci_write_word(struct pci_dev
*, int pos
, u16 data
) PCI_ABI
;
152 int pci_write_long(struct pci_dev
*, int pos
, u32 data
) PCI_ABI
;
153 int pci_write_block(struct pci_dev
*, int pos
, u8
*buf
, int len
) PCI_ABI
;
155 int pci_fill_info(struct pci_dev
*, int flags
) PCI_ABI
; /* Fill in device information */
157 #define PCI_FILL_IDENT 1
158 #define PCI_FILL_IRQ 2
159 #define PCI_FILL_BASES 4
160 #define PCI_FILL_ROM_BASE 8
161 #define PCI_FILL_SIZES 16
162 #define PCI_FILL_CLASS 32
163 #define PCI_FILL_CAPS 64
164 #define PCI_FILL_EXT_CAPS 128
165 #define PCI_FILL_RESCAN 0x10000
167 void pci_setup_cache(struct pci_dev
*, u8
*cache
, int len
) PCI_ABI
;
174 struct pci_cap
*next
;
175 u16 id
; /* PCI_CAP_ID_xxx */
176 u16 type
; /* PCI_CAP_xxx */
177 unsigned int addr
; /* Position in the config space */
180 #define PCI_CAP_NORMAL 1 /* Traditional PCI capabilities */
181 #define PCI_CAP_EXTENDED 2 /* PCIe extended capabilities */
183 struct pci_cap
*pci_find_cap(struct pci_dev
*, unsigned int id
, unsigned int type
) PCI_ABI
;
190 int domain
, bus
, slot
, func
; /* -1 = ANY */
194 void pci_filter_init(struct pci_access
*, struct pci_filter
*) PCI_ABI
;
195 char *pci_filter_parse_slot(struct pci_filter
*, char *) PCI_ABI
;
196 char *pci_filter_parse_id(struct pci_filter
*, char *) PCI_ABI
;
197 int pci_filter_match(struct pci_filter
*, struct pci_dev
*) PCI_ABI
;
200 * Conversion of PCI ID's to names (according to the pci.ids file)
202 * Call pci_lookup_name() to identify different types of ID's:
204 * VENDOR (vendorID) -> vendor
205 * DEVICE (vendorID, deviceID) -> device
206 * VENDOR | DEVICE (vendorID, deviceID) -> combined vendor and device
207 * SUBSYSTEM | VENDOR (subvendorID) -> subsystem vendor
208 * SUBSYSTEM | DEVICE (vendorID, deviceID, subvendorID, subdevID) -> subsystem device
209 * SUBSYSTEM | VENDOR | DEVICE (vendorID, deviceID, subvendorID, subdevID) -> combined subsystem v+d
210 * SUBSYSTEM | ... (-1, -1, subvendorID, subdevID) -> generic subsystem
211 * CLASS (classID) -> class
212 * PROGIF (classID, progif) -> programming interface
215 char *pci_lookup_name(struct pci_access
*a
, char *buf
, int size
, int flags
, ...) PCI_ABI
;
217 int pci_load_name_list(struct pci_access
*a
) PCI_ABI
; /* Called automatically by pci_lookup_*() when needed; returns success */
218 void pci_free_name_list(struct pci_access
*a
) PCI_ABI
; /* Called automatically by pci_cleanup() */
219 void pci_set_name_list_path(struct pci_access
*a
, char *name
, int to_be_freed
) PCI_ABI
;
220 void pci_id_cache_flush(struct pci_access
*a
) PCI_ABI
;
222 enum pci_lookup_mode
{
223 PCI_LOOKUP_VENDOR
= 1, /* Vendor name (args: vendorID) */
224 PCI_LOOKUP_DEVICE
= 2, /* Device name (args: vendorID, deviceID) */
225 PCI_LOOKUP_CLASS
= 4, /* Device class (args: classID) */
226 PCI_LOOKUP_SUBSYSTEM
= 8,
227 PCI_LOOKUP_PROGIF
= 16, /* Programming interface (args: classID, prog_if) */
228 PCI_LOOKUP_NUMERIC
= 0x10000, /* Want only formatted numbers; default if access->numeric_ids is set */
229 PCI_LOOKUP_NO_NUMBERS
= 0x20000, /* Return NULL if not found in the database; default is to print numerically */
230 PCI_LOOKUP_MIXED
= 0x40000, /* Include both numbers and names */
231 PCI_LOOKUP_NETWORK
= 0x80000, /* Try to resolve unknown ID's by DNS */
232 PCI_LOOKUP_SKIP_LOCAL
= 0x100000, /* Do not consult local database */
233 PCI_LOOKUP_CACHE
= 0x200000, /* Consult the local cache before using DNS */
234 PCI_LOOKUP_REFRESH_CACHE
= 0x400000, /* Forget all previously cached entries, but still allow updating the cache */