/* * The PCI Library * * Copyright (c) 1997--2006 Martin Mares * * Can be freely distributed and used under the terms of the GNU GPL. */ #ifndef _PCI_LIB_H #define _PCI_LIB_H #include "config.h" #include "header.h" #include "types.h" #define PCI_LIB_VERSION 0x020204 /* * PCI Access Structure */ struct pci_methods; enum pci_access_type { /* Known access methods, remember to update access.c as well */ PCI_ACCESS_AUTO, /* Autodetection (params: none) */ PCI_ACCESS_SYS_BUS_PCI, /* Linux /sys/bus/pci (params: path) */ PCI_ACCESS_PROC_BUS_PCI, /* Linux /proc/bus/pci (params: path) */ PCI_ACCESS_I386_TYPE1, /* i386 ports, type 1 (params: none) */ PCI_ACCESS_I386_TYPE2, /* i386 ports, type 2 (params: none) */ PCI_ACCESS_FBSD_DEVICE, /* FreeBSD /dev/pci (params: path) */ 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 (params: filename) */ PCI_ACCESS_MAX }; struct pci_access { /* Options you can change: */ unsigned int method; /* Access method */ char *method_params[PCI_ACCESS_MAX]; /* Parameters for the methods */ int writeable; /* Open in read/write mode */ int buscentric; /* Bus-centric view of the world */ char *id_file_name; /* Name of ID list file */ int free_id_name; /* Set if id_file_name is malloced */ int numeric_ids; /* Enforce PCI_LOOKUP_NUMERIC (>1 => PCI_LOOKUP_MIXED) */ int debugging; /* Turn on debugging messages */ /* Functions you can override: */ void (*error)(char *msg, ...); /* Write error message and quit */ void (*warning)(char *msg, ...); /* Write a warning message */ void (*debug)(char *msg, ...); /* Write a debugging message */ struct pci_dev *devices; /* Devices found on this bus */ /* Fields used internally: */ struct pci_methods *methods; struct id_entry **id_hash; /* names.c */ struct id_bucket *current_id_bucket; int hash_load_failed; int fd; /* proc: fd */ int fd_rw; /* proc: fd opened read-write */ struct pci_dev *cached_dev; /* proc: device the fd is for */ int fd_pos; /* proc: current position */ }; /* Initialize PCI access */ struct pci_access *pci_alloc(void); void pci_init(struct pci_access *); void pci_cleanup(struct pci_access *); /* Scanning of devices */ void pci_scan_bus(struct pci_access *acc); struct pci_dev *pci_get_dev(struct pci_access *acc, int domain, int bus, int dev, int func); /* Raw access to specified device */ void pci_free_dev(struct pci_dev *); /* * 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 */ pciaddr_t size[6]; /* Region sizes */ pciaddr_t rom_base_addr; /* Expansion ROM base address */ pciaddr_t rom_size; /* Expansion ROM size */ /* 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) u8 pci_read_byte(struct pci_dev *, int pos); /* Access to configuration space */ u16 pci_read_word(struct pci_dev *, int pos); u32 pci_read_long(struct pci_dev *, int pos); int pci_read_block(struct pci_dev *, int pos, u8 *buf, int len); int pci_write_byte(struct pci_dev *, int pos, u8 data); int pci_write_word(struct pci_dev *, int pos, u16 data); int pci_write_long(struct pci_dev *, int pos, u32 data); int pci_write_block(struct pci_dev *, int pos, u8 *buf, int len); int pci_fill_info(struct pci_dev *, int flags); /* 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_RESCAN 0x10000 void pci_setup_cache(struct pci_dev *, u8 *cache, int len); /* * Filters */ struct pci_filter { int domain, bus, slot, func; /* -1 = ANY */ int vendor, device; }; void pci_filter_init(struct pci_access *, struct pci_filter *); char *pci_filter_parse_slot(struct pci_filter *, char *); char *pci_filter_parse_id(struct pci_filter *, char *); int pci_filter_match(struct pci_filter *, struct pci_dev *); /* * 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, ...); int pci_load_name_list(struct pci_access *a); /* Called automatically by pci_lookup_*() when needed; returns success */ void pci_free_name_list(struct pci_access *a); /* Called automatically by pci_cleanup() */ void pci_set_name_list_path(struct pci_access *a, char *name, int to_be_freed); 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 */ }; #endif