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- /*
- * The PCI Library
- *
- * Copyright (c) 1997--2006 Martin Mares <mj@ucw.cz>
- *
- * 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
-