/* * The PCI Library * * Copyright (c) 1997--2013 Martin Mares * * Can be freely distributed and used under the terms of the GNU GPL. */ #ifndef _PCI_LIB_H #define _PCI_LIB_H #ifndef PCI_CONFIG_H #include "config.h" #endif #include "header.h" #include "types.h" #define PCI_LIB_VERSION 0x030200 #ifndef PCI_ABI #define PCI_ABI #endif /* * PCI Access Structure */ struct pci_methods; enum pci_access_type { /* Known access methods, remember to update access.c as well */ PCI_ACCESS_AUTO, /* Autodetection */ PCI_ACCESS_SYS_BUS_PCI, /* Linux /sys/bus/pci */ PCI_ACCESS_PROC_BUS_PCI, /* Linux /proc/bus/pci */ PCI_ACCESS_I386_TYPE1, /* i386 ports, type 1 */ PCI_ACCESS_I386_TYPE2, /* i386 ports, type 2 */ PCI_ACCESS_FBSD_DEVICE, /* FreeBSD /dev/pci */ PCI_ACCESS_AIX_DEVICE, /* /dev/pci0, /dev/bus0, etc. */ PCI_ACCESS_NBSD_LIBPCI, /* NetBSD libpci */ PCI_ACCESS_OBSD_DEVICE, /* OpenBSD /dev/pci */ PCI_ACCESS_DUMP, /* Dump file */ PCI_ACCESS_MAX }; struct pci_access { /* Options you can change: */ unsigned int method; /* Access method */ int writeable; /* Open in read/write mode */ int buscentric; /* Bus-centric view of the world */ char *id_file_name; /* Name of ID list file (use pci_set_name_list_path()) */ int free_id_name; /* Set if id_file_name is malloced */ int numeric_ids; /* Enforce PCI_LOOKUP_NUMERIC (>1 => PCI_LOOKUP_MIXED) */ unsigned int id_lookup_mode; /* pci_lookup_mode flags which are set automatically */ /* Default: PCI_LOOKUP_CACHE */ int debugging; /* Turn on debugging messages */ /* Functions you can override: */ void (*error)(char *msg, ...) PCI_PRINTF(1,2); /* Write error message and quit */ void (*warning)(char *msg, ...) PCI_PRINTF(1,2); /* Write a warning message */ void (*debug)(char *msg, ...) PCI_PRINTF(1,2); /* Write a debugging message */ struct pci_dev *devices; /* Devices found on this bus */ /* Fields used internally: */ struct pci_methods *methods; struct pci_param *params; struct id_entry **id_hash; /* names.c */ struct id_bucket *current_id_bucket; int id_load_failed; int id_cache_status; /* 0=not read, 1=read, 2=dirty */ int fd; /* proc/sys: fd for config space */ int fd_rw; /* proc/sys: fd opened read-write */ int fd_pos; /* proc/sys: current position */ int fd_vpd; /* sys: fd for VPD */ struct pci_dev *cached_dev; /* proc/sys: device the fds are for */ }; /* Initialize PCI access */ struct pci_access *pci_alloc(void) PCI_ABI; void pci_init(struct pci_access *) PCI_ABI; void pci_cleanup(struct pci_access *) PCI_ABI; /* Scanning of devices */ void pci_scan_bus(struct pci_access *acc) PCI_ABI; 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 */ void pci_free_dev(struct pci_dev *) PCI_ABI; /* Names of access methods */ int pci_lookup_method(char *name) PCI_ABI; /* Returns -1 if not found */ char *pci_get_method_name(int index) PCI_ABI; /* Returns "" if unavailable, NULL if index out of range */ /* * Named parameters */ struct pci_param { struct pci_param *next; /* Please use pci_walk_params() for traversing the list */ char *param; /* Name of the parameter */ char *value; /* Value of the parameter */ int value_malloced; /* used internally */ char *help; /* Explanation of the parameter */ }; char *pci_get_param(struct pci_access *acc, char *param) PCI_ABI; int pci_set_param(struct pci_access *acc, char *param, char *value) PCI_ABI; /* 0 on success, -1 if no such parameter */ /* To traverse the list, call pci_walk_params repeatedly, first with prev=NULL, and do not modify the parameters during traversal. */ struct pci_param *pci_walk_params(struct pci_access *acc, struct pci_param *prev) PCI_ABI; /* * Devices */ struct pci_dev { struct pci_dev *next; /* Next device in the chain */ u16 domain; /* PCI domain (host bridge) */ u8 bus, dev, func; /* Bus inside domain, device and function */ /* These fields are set by pci_fill_info() */ int known_fields; /* Set of info fields already known */ u16 vendor_id, device_id; /* Identity of the device */ u16 device_class; /* PCI device class */ int irq; /* IRQ number */ pciaddr_t base_addr[6]; /* Base addresses including flags in lower bits */ pciaddr_t size[6]; /* Region sizes */ pciaddr_t rom_base_addr; /* Expansion ROM base address */ pciaddr_t rom_size; /* Expansion ROM size */ struct pci_cap *first_cap; /* List of capabilities */ char *phy_slot; /* Physical slot */ char *module_alias; /* Linux kernel module alias */ /* Fields used internally: */ struct pci_access *access; struct pci_methods *methods; u8 *cache; /* Cached config registers */ int cache_len; int hdrtype; /* Cached low 7 bits of header type, -1 if unknown */ void *aux; /* Auxillary data */ }; #define PCI_ADDR_IO_MASK (~(pciaddr_t) 0x3) #define PCI_ADDR_MEM_MASK (~(pciaddr_t) 0xf) #define PCI_ADDR_FLAG_MASK 0xf u8 pci_read_byte(struct pci_dev *, int pos) PCI_ABI; /* Access to configuration space */ u16 pci_read_word(struct pci_dev *, int pos) PCI_ABI; u32 pci_read_long(struct pci_dev *, int pos) PCI_ABI; int pci_read_block(struct pci_dev *, int pos, u8 *buf, int len) PCI_ABI; int pci_read_vpd(struct pci_dev *d, int pos, u8 *buf, int len) PCI_ABI; int pci_write_byte(struct pci_dev *, int pos, u8 data) PCI_ABI; int pci_write_word(struct pci_dev *, int pos, u16 data) PCI_ABI; int pci_write_long(struct pci_dev *, int pos, u32 data) PCI_ABI; int pci_write_block(struct pci_dev *, int pos, u8 *buf, int len) PCI_ABI; int pci_fill_info(struct pci_dev *, int flags) PCI_ABI; /* 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_SIZES 16 #define PCI_FILL_CLASS 32 #define PCI_FILL_CAPS 64 #define PCI_FILL_EXT_CAPS 128 #define PCI_FILL_PHYS_SLOT 256 #define PCI_FILL_MODULE_ALIAS 512 #define PCI_FILL_RESCAN 0x10000 void pci_setup_cache(struct pci_dev *, u8 *cache, int len) PCI_ABI; /* * Capabilities */ struct pci_cap { struct pci_cap *next; u16 id; /* PCI_CAP_ID_xxx */ u16 type; /* PCI_CAP_xxx */ unsigned int addr; /* Position in the config space */ }; #define PCI_CAP_NORMAL 1 /* Traditional PCI capabilities */ #define PCI_CAP_EXTENDED 2 /* PCIe extended capabilities */ struct pci_cap *pci_find_cap(struct pci_dev *, unsigned int id, unsigned int type) PCI_ABI; /* * Filters */ struct pci_filter { int domain, bus, slot, func; /* -1 = ANY */ int vendor, device; }; void pci_filter_init(struct pci_access *, struct pci_filter *) PCI_ABI; char *pci_filter_parse_slot(struct pci_filter *, char *) PCI_ABI; char *pci_filter_parse_id(struct pci_filter *, char *) PCI_ABI; int pci_filter_match(struct pci_filter *, struct pci_dev *) PCI_ABI; /* * Conversion of PCI ID's to names (according to the pci.ids file) * * Call pci_lookup_name() to identify different types of ID's: * * VENDOR (vendorID) -> vendor * DEVICE (vendorID, deviceID) -> device * VENDOR | DEVICE (vendorID, deviceID) -> combined vendor and device * SUBSYSTEM | VENDOR (subvendorID) -> subsystem vendor * SUBSYSTEM | DEVICE (vendorID, deviceID, subvendorID, subdevID) -> subsystem device * SUBSYSTEM | VENDOR | DEVICE (vendorID, deviceID, subvendorID, subdevID) -> combined subsystem v+d * SUBSYSTEM | ... (-1, -1, subvendorID, subdevID) -> generic subsystem * CLASS (classID) -> class * PROGIF (classID, progif) -> programming interface */ char *pci_lookup_name(struct pci_access *a, char *buf, int size, int flags, ...) PCI_ABI; int pci_load_name_list(struct pci_access *a) PCI_ABI; /* Called automatically by pci_lookup_*() when needed; returns success */ void pci_free_name_list(struct pci_access *a) PCI_ABI; /* Called automatically by pci_cleanup() */ void pci_set_name_list_path(struct pci_access *a, char *name, int to_be_freed) PCI_ABI; void pci_id_cache_flush(struct pci_access *a) PCI_ABI; enum pci_lookup_mode { PCI_LOOKUP_VENDOR = 1, /* Vendor name (args: vendorID) */ PCI_LOOKUP_DEVICE = 2, /* Device name (args: vendorID, deviceID) */ PCI_LOOKUP_CLASS = 4, /* Device class (args: classID) */ PCI_LOOKUP_SUBSYSTEM = 8, PCI_LOOKUP_PROGIF = 16, /* Programming interface (args: classID, prog_if) */ PCI_LOOKUP_NUMERIC = 0x10000, /* Want only formatted numbers; default if access->numeric_ids is set */ PCI_LOOKUP_NO_NUMBERS = 0x20000, /* Return NULL if not found in the database; default is to print numerically */ PCI_LOOKUP_MIXED = 0x40000, /* Include both numbers and names */ PCI_LOOKUP_NETWORK = 0x80000, /* Try to resolve unknown ID's by DNS */ PCI_LOOKUP_SKIP_LOCAL = 0x100000, /* Do not consult local database */ PCI_LOOKUP_CACHE = 0x200000, /* Consult the local cache before using DNS */ PCI_LOOKUP_REFRESH_CACHE = 0x400000, /* Forget all previously cached entries, but still allow updating the cache */ }; #endif