4 * Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
6 * Can be freely distributed and used under the terms of the GNU GPL.
16 #define PCI_LIB_VERSION 0x030000
23 * PCI Access Structure
28 enum pci_access_type {
29 /* Known access methods, remember to update access.c as well */
30 PCI_ACCESS_AUTO, /* Autodetection */
31 PCI_ACCESS_SYS_BUS_PCI, /* Linux /sys/bus/pci */
32 PCI_ACCESS_PROC_BUS_PCI, /* Linux /proc/bus/pci */
33 PCI_ACCESS_I386_TYPE1, /* i386 ports, type 1 */
34 PCI_ACCESS_I386_TYPE2, /* i386 ports, type 2 */
35 PCI_ACCESS_FBSD_DEVICE, /* FreeBSD /dev/pci */
36 PCI_ACCESS_AIX_DEVICE, /* /dev/pci0, /dev/bus0, etc. */
37 PCI_ACCESS_NBSD_LIBPCI, /* NetBSD libpci */
38 PCI_ACCESS_OBSD_DEVICE, /* OpenBSD /dev/pci */
39 PCI_ACCESS_DUMP, /* Dump file */
44 /* Options you can change: */
45 unsigned int method; /* Access method */
46 int writeable; /* Open in read/write mode */
47 int buscentric; /* Bus-centric view of the world */
49 char *id_file_name; /* Name of ID list file (use pci_set_name_list_path()) */
50 int free_id_name; /* Set if id_file_name is malloced */
51 int numeric_ids; /* Enforce PCI_LOOKUP_NUMERIC (>1 => PCI_LOOKUP_MIXED) */
53 unsigned int id_lookup_mode; /* pci_lookup_mode flags which are set automatically */
54 /* Default: PCI_LOOKUP_CACHE */
56 int debugging; /* Turn on debugging messages */
58 /* Functions you can override: */
59 void (*error)(char *msg, ...) PCI_PRINTF(1,2); /* Write error message and quit */
60 void (*warning)(char *msg, ...) PCI_PRINTF(1,2); /* Write a warning message */
61 void (*debug)(char *msg, ...) PCI_PRINTF(1,2); /* Write a debugging message */
63 struct pci_dev *devices; /* Devices found on this bus */
65 /* Fields used internally: */
66 struct pci_methods *methods;
67 struct pci_param *params;
68 struct id_entry **id_hash; /* names.c */
69 struct id_bucket *current_id_bucket;
71 int id_cache_status; /* 0=not read, 1=read, 2=dirty */
72 int fd; /* proc: fd */
73 int fd_rw; /* proc: fd opened read-write */
74 struct pci_dev *cached_dev; /* proc: device the fd is for */
75 int fd_pos; /* proc: current position */
78 /* Initialize PCI access */
79 struct pci_access *pci_alloc(void) PCI_ABI;
80 void pci_init(struct pci_access *) PCI_ABI;
81 void pci_cleanup(struct pci_access *) PCI_ABI;
83 /* Scanning of devices */
84 void pci_scan_bus(struct pci_access *acc) PCI_ABI;
85 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 */
86 void pci_free_dev(struct pci_dev *) PCI_ABI;
88 /* Names of access methods */
89 int pci_lookup_method(char *name) PCI_ABI; /* Returns -1 if not found */
90 char *pci_get_method_name(int index) PCI_ABI; /* Returns "" if unavailable, NULL if index out of range */
97 struct pci_param *next; /* Please use pci_walk_params() for traversing the list */
98 char *param; /* Name of the parameter */
99 char *value; /* Value of the parameter */
100 int value_malloced; /* used internally */
101 char *help; /* Explanation of the parameter */
104 char *pci_get_param(struct pci_access *acc, char *param) PCI_ABI;
105 int pci_set_param(struct pci_access *acc, char *param, char *value) PCI_ABI; /* 0 on success, -1 if no such parameter */
106 /* To traverse the list, call pci_walk_params repeatedly, first with prev=NULL, and do not modify the parameters during traversal. */
107 struct pci_param *pci_walk_params(struct pci_access *acc, struct pci_param *prev) PCI_ABI;
114 struct pci_dev *next; /* Next device in the chain */
115 u16 domain; /* PCI domain (host bridge) */
116 u8 bus, dev, func; /* Bus inside domain, device and function */
118 /* These fields are set by pci_fill_info() */
119 int known_fields; /* Set of info fields already known */
120 u16 vendor_id, device_id; /* Identity of the device */
121 u16 device_class; /* PCI device class */
122 int irq; /* IRQ number */
123 pciaddr_t base_addr[6]; /* Base addresses */
124 pciaddr_t size[6]; /* Region sizes */
125 pciaddr_t rom_base_addr; /* Expansion ROM base address */
126 pciaddr_t rom_size; /* Expansion ROM size */
128 /* Fields used internally: */
129 struct pci_access *access;
130 struct pci_methods *methods;
131 u8 *cache; /* Cached config registers */
133 int hdrtype; /* Cached low 7 bits of header type, -1 if unknown */
134 void *aux; /* Auxillary data */
137 #define PCI_ADDR_IO_MASK (~(pciaddr_t) 0x3)
138 #define PCI_ADDR_MEM_MASK (~(pciaddr_t) 0xf)
140 u8 pci_read_byte(struct pci_dev *, int pos) PCI_ABI; /* Access to configuration space */
141 u16 pci_read_word(struct pci_dev *, int pos) PCI_ABI;
142 u32 pci_read_long(struct pci_dev *, int pos) PCI_ABI;
143 int pci_read_block(struct pci_dev *, int pos, u8 *buf, int len) PCI_ABI;
144 int pci_write_byte(struct pci_dev *, int pos, u8 data) PCI_ABI;
145 int pci_write_word(struct pci_dev *, int pos, u16 data) PCI_ABI;
146 int pci_write_long(struct pci_dev *, int pos, u32 data) PCI_ABI;
147 int pci_write_block(struct pci_dev *, int pos, u8 *buf, int len) PCI_ABI;
149 int pci_fill_info(struct pci_dev *, int flags) PCI_ABI; /* Fill in device information */
151 #define PCI_FILL_IDENT 1
152 #define PCI_FILL_IRQ 2
153 #define PCI_FILL_BASES 4
154 #define PCI_FILL_ROM_BASE 8
155 #define PCI_FILL_SIZES 16
156 #define PCI_FILL_CLASS 32
157 #define PCI_FILL_RESCAN 0x10000
159 void pci_setup_cache(struct pci_dev *, u8 *cache, int len) PCI_ABI;
166 int domain, bus, slot, func; /* -1 = ANY */
170 void pci_filter_init(struct pci_access *, struct pci_filter *) PCI_ABI;
171 char *pci_filter_parse_slot(struct pci_filter *, char *) PCI_ABI;
172 char *pci_filter_parse_id(struct pci_filter *, char *) PCI_ABI;
173 int pci_filter_match(struct pci_filter *, struct pci_dev *) PCI_ABI;
176 * Conversion of PCI ID's to names (according to the pci.ids file)
178 * Call pci_lookup_name() to identify different types of ID's:
180 * VENDOR (vendorID) -> vendor
181 * DEVICE (vendorID, deviceID) -> device
182 * VENDOR | DEVICE (vendorID, deviceID) -> combined vendor and device
183 * SUBSYSTEM | VENDOR (subvendorID) -> subsystem vendor
184 * SUBSYSTEM | DEVICE (vendorID, deviceID, subvendorID, subdevID) -> subsystem device
185 * SUBSYSTEM | VENDOR | DEVICE (vendorID, deviceID, subvendorID, subdevID) -> combined subsystem v+d
186 * SUBSYSTEM | ... (-1, -1, subvendorID, subdevID) -> generic subsystem
187 * CLASS (classID) -> class
188 * PROGIF (classID, progif) -> programming interface
191 char *pci_lookup_name(struct pci_access *a, char *buf, int size, int flags, ...) PCI_ABI;
193 int pci_load_name_list(struct pci_access *a) PCI_ABI; /* Called automatically by pci_lookup_*() when needed; returns success */
194 void pci_free_name_list(struct pci_access *a) PCI_ABI; /* Called automatically by pci_cleanup() */
195 void pci_set_name_list_path(struct pci_access *a, char *name, int to_be_freed) PCI_ABI;
196 void pci_id_cache_flush(struct pci_access *a) PCI_ABI;
198 enum pci_lookup_mode {
199 PCI_LOOKUP_VENDOR = 1, /* Vendor name (args: vendorID) */
200 PCI_LOOKUP_DEVICE = 2, /* Device name (args: vendorID, deviceID) */
201 PCI_LOOKUP_CLASS = 4, /* Device class (args: classID) */
202 PCI_LOOKUP_SUBSYSTEM = 8,
203 PCI_LOOKUP_PROGIF = 16, /* Programming interface (args: classID, prog_if) */
204 PCI_LOOKUP_NUMERIC = 0x10000, /* Want only formatted numbers; default if access->numeric_ids is set */
205 PCI_LOOKUP_NO_NUMBERS = 0x20000, /* Return NULL if not found in the database; default is to print numerically */
206 PCI_LOOKUP_MIXED = 0x40000, /* Include both numbers and names */
207 PCI_LOOKUP_NETWORK = 0x80000, /* Try to resolve unknown ID's by DNS */
208 PCI_LOOKUP_SKIP_LOCAL = 0x100000, /* Do not consult local database */
209 PCI_LOOKUP_CACHE = 0x200000, /* Consult the local cache before using DNS */
210 PCI_LOOKUP_REFRESH_CACHE = 0x400000, /* Forget all previously cached entries, but still allow updating the cache */