4 * Copyright (c) 1997--2004 Martin Mares <mj@ucw.cz>
6 * Can be freely distributed and used under the terms of the GNU GPL.
16 * Types and format strings
19 #include <sys/types.h>
22 typedef unsigned char byte;
24 typedef unsigned short word;
26 typedef unsigned long u32;
28 typedef u_int8_t byte;
30 typedef u_int16_t word;
31 typedef u_int16_t u16;
32 typedef u_int32_t u32;
35 #ifdef HAVE_64BIT_ADDRESS
37 #if ULONG_MAX > 0xffffffff
38 typedef unsigned long u64;
39 #define PCIADDR_T_FMT "%016lx"
40 #define PCIADDR_PORT_FMT "%04lx"
42 typedef unsigned long long u64;
43 #define PCIADDR_T_FMT "%016llx"
44 #define PCIADDR_PORT_FMT "%04llx"
46 typedef u64 pciaddr_t;
48 typedef u32 pciaddr_t;
49 #define PCIADDR_T_FMT "%08x"
50 #define PCIADDR_PORT_FMT "%04x"
54 /* On sparc64 Linux the kernel reports remapped port addresses and IRQ numbers */
55 #undef PCIADDR_PORT_FMT
56 #define PCIADDR_PORT_FMT PCIADDR_T_FMT
57 #define PCIIRQ_FMT "%08x"
59 #define PCIIRQ_FMT "%d"
63 * PCI Access Structure
69 enum pci_access_type {
70 /* Known access methods, remember to update access.c as well */
71 PCI_ACCESS_AUTO, /* Autodetection (params: none) */
72 PCI_ACCESS_SYS_BUS_PCI, /* Linux /sys/bus/pci (params: path) */
73 PCI_ACCESS_PROC_BUS_PCI, /* Linux /proc/bus/pci (params: path) */
74 PCI_ACCESS_I386_TYPE1, /* i386 ports, type 1 (params: none) */
75 PCI_ACCESS_I386_TYPE2, /* i386 ports, type 2 (params: none) */
76 PCI_ACCESS_FBSD_DEVICE, /* FreeBSD /dev/pci (params: path) */
77 PCI_ACCESS_AIX_DEVICE, /* /dev/pci0, /dev/bus0, etc. */
78 PCI_ACCESS_NBSD_LIBPCI, /* NetBSD libpci */
79 PCI_ACCESS_DUMP, /* Dump file (params: filename) */
84 /* Options you can change: */
85 unsigned int method; /* Access method */
86 char *method_params[PCI_ACCESS_MAX]; /* Parameters for the methods */
87 int writeable; /* Open in read/write mode */
88 int buscentric; /* Bus-centric view of the world */
89 char *id_file_name; /* Name of ID list file */
90 int numeric_ids; /* Don't resolve device IDs to names */
91 int debugging; /* Turn on debugging messages */
93 /* Functions you can override: */
94 void (*error)(char *msg, ...); /* Write error message and quit */
95 void (*warning)(char *msg, ...); /* Write a warning message */
96 void (*debug)(char *msg, ...); /* Write a debugging message */
98 struct pci_dev *devices; /* Devices found on this bus */
100 /* Fields used internally: */
101 struct pci_methods *methods;
102 char *nl_list; /* Name list cache */
103 struct nl_entry **nl_hash;
104 int fd; /* proc: fd */
105 int fd_rw; /* proc: fd opened read-write */
106 struct pci_dev *cached_dev; /* proc: device the fd is for */
107 int fd_pos; /* proc: current position */
110 /* Initialize PCI access */
111 struct pci_access *pci_alloc(void);
112 void pci_init(struct pci_access *);
113 void pci_cleanup(struct pci_access *);
115 /* Scanning of devices */
116 void pci_scan_bus(struct pci_access *acc);
117 struct pci_dev *pci_get_dev(struct pci_access *acc, int domain, int bus, int dev, int func); /* Raw access to specified device */
118 void pci_free_dev(struct pci_dev *);
125 struct pci_dev *next; /* Next device in the chain */
126 u16 domain; /* PCI domain (host bridge) */
127 byte bus, dev, func; /* Bus inside domain, device and function */
129 /* These fields are set by pci_fill_info() */
130 int known_fields; /* Set of info fields already known */
131 word vendor_id, device_id; /* Identity of the device */
132 int irq; /* IRQ number */
133 pciaddr_t base_addr[6]; /* Base addresses */
134 pciaddr_t size[6]; /* Region sizes */
135 pciaddr_t rom_base_addr; /* Expansion ROM base address */
136 pciaddr_t rom_size; /* Expansion ROM size */
138 /* Fields used internally: */
139 struct pci_access *access;
140 struct pci_methods *methods;
141 byte *cache; /* Cached config registers */
143 int hdrtype; /* Cached low 7 bits of header type, -1 if unknown */
144 void *aux; /* Auxillary data */
147 #define PCI_ADDR_IO_MASK (~(pciaddr_t) 0x3)
148 #define PCI_ADDR_MEM_MASK (~(pciaddr_t) 0xf)
150 byte pci_read_byte(struct pci_dev *, int pos); /* Access to configuration space */
151 word pci_read_word(struct pci_dev *, int pos);
152 u32 pci_read_long(struct pci_dev *, int pos);
153 int pci_read_block(struct pci_dev *, int pos, byte *buf, int len);
154 int pci_write_byte(struct pci_dev *, int pos, byte data);
155 int pci_write_word(struct pci_dev *, int pos, word data);
156 int pci_write_long(struct pci_dev *, int pos, u32 data);
157 int pci_write_block(struct pci_dev *, int pos, byte *buf, int len);
159 int pci_fill_info(struct pci_dev *, int flags); /* Fill in device information */
161 #define PCI_FILL_IDENT 1
162 #define PCI_FILL_IRQ 2
163 #define PCI_FILL_BASES 4
164 #define PCI_FILL_ROM_BASE 8
165 #define PCI_FILL_SIZES 16
166 #define PCI_FILL_RESCAN 0x10000
168 void pci_setup_cache(struct pci_dev *, byte *cache, int len);
175 int domain, bus, slot, func; /* -1 = ANY */
179 void pci_filter_init(struct pci_access *, struct pci_filter *);
180 char *pci_filter_parse_slot(struct pci_filter *, char *);
181 char *pci_filter_parse_id(struct pci_filter *, char *);
182 int pci_filter_match(struct pci_filter *, struct pci_dev *);
188 char *pci_lookup_name(struct pci_access *a, char *buf, int size, int flags, u32 arg1, u32 arg2, u32 arg3, u32 arg4);
189 void pci_free_name_list(struct pci_access *a);
191 #define PCI_LOOKUP_VENDOR 1
192 #define PCI_LOOKUP_DEVICE 2
193 #define PCI_LOOKUP_CLASS 4
194 #define PCI_LOOKUP_SUBSYSTEM 8
195 #define PCI_LOOKUP_PROGIF 16
196 #define PCI_LOOKUP_NUMERIC 0x10000