2 * The PCI Library -- Initialization and related things
4 * Copyright (c) 1997--2018 Martin Mares <mj@ucw.cz>
6 * Can be freely distributed and used under the terms of the GNU GPL.
20 static struct pci_methods *pci_methods[PCI_ACCESS_MAX] = {
22 #ifdef PCI_HAVE_PM_LINUX_SYSFS
27 #ifdef PCI_HAVE_PM_LINUX_PROC
32 #ifdef PCI_HAVE_PM_INTEL_CONF
39 #ifdef PCI_HAVE_PM_FBSD_DEVICE
44 #ifdef PCI_HAVE_PM_AIX_DEVICE
49 #ifdef PCI_HAVE_PM_NBSD_LIBPCI
54 #ifdef PCI_HAVE_PM_OBSD_DEVICE
59 #ifdef PCI_HAVE_PM_DUMP
64 #ifdef PCI_HAVE_PM_DARWIN_DEVICE
69 #ifdef PCI_HAVE_PM_SYLIXOS_DEVICE
74 #ifdef PCI_HAVE_PM_HURD_CONF
81 // If PCI_ACCESS_AUTO is selected, we probe the access methods in this order
82 static int probe_sequence[] = {
83 // System-specific methods
84 PCI_ACCESS_SYS_BUS_PCI,
85 PCI_ACCESS_PROC_BUS_PCI,
86 PCI_ACCESS_FBSD_DEVICE,
87 PCI_ACCESS_AIX_DEVICE,
88 PCI_ACCESS_NBSD_LIBPCI,
89 PCI_ACCESS_OBSD_DEVICE,
91 PCI_ACCESS_SYLIXOS_DEVICE,
93 // Low-level methods poking the hardware directly
94 PCI_ACCESS_I386_TYPE1,
95 PCI_ACCESS_I386_TYPE2,
100 pci_generic_error(char *msg, ...)
105 fputs("pcilib: ", stderr);
106 vfprintf(stderr, msg, args);
113 pci_generic_warn(char *msg, ...)
118 fputs("pcilib: ", stderr);
119 vfprintf(stderr, msg, args);
125 pci_generic_debug(char *msg, ...)
130 vfprintf(stdout, msg, args);
135 pci_null_debug(char *msg UNUSED, ...)
139 // Memory allocation functions are safe to call if pci_access is not fully initalized or even NULL
142 pci_malloc(struct pci_access *a, int size)
144 void *x = malloc(size);
147 (a && a->error ? a->error : pci_generic_error)("Out of memory (allocation of %d bytes failed)", size);
159 pci_strdup(struct pci_access *a, const char *s)
161 int len = strlen(s) + 1;
162 char *t = pci_malloc(a, len);
168 pci_lookup_method(char *name)
172 for (i=0; i<PCI_ACCESS_MAX; i++)
173 if (pci_methods[i] && !strcmp(pci_methods[i]->name, name))
179 pci_get_method_name(int index)
181 if (index < 0 || index >= PCI_ACCESS_MAX)
183 else if (!pci_methods[index])
186 return pci_methods[index]->name;
192 struct pci_access *a = pci_malloc(NULL, sizeof(struct pci_access));
195 memset(a, 0, sizeof(*a));
196 #ifdef PCI_OS_WINDOWS
197 if ((PCI_PATH_IDS_DIR)[0])
198 pci_set_name_list_path(a, PCI_PATH_IDS_DIR "\\" PCI_IDS, 0);
204 path = pci_malloc(a, MAX_PATH+1);
205 len = GetModuleFileNameA(NULL, path, MAX_PATH+1);
206 sep = (len > 0) ? strrchr(path, '\\') : NULL;
207 if (len == 0 || len == MAX_PATH+1 || !sep || MAX_PATH-(size_t)(sep+1-path) < sizeof(PCI_IDS))
211 memcpy(sep+1, PCI_IDS, sizeof(PCI_IDS));
212 pci_set_name_list_path(a, path, 1);
216 pci_set_name_list_path(a, PCI_PATH_IDS_DIR "/" PCI_IDS, 0);
219 pci_define_param(a, "net.domain", PCI_ID_DOMAIN, "DNS domain used for resolving of ID's");
220 pci_define_param(a, "net.cache_name", "~/.pciids-cache", "Name of the ID cache file");
221 a->id_lookup_mode = PCI_LOOKUP_CACHE;
224 pci_define_param(a, "hwdb.disable", "0", "Do not look up names in UDEV's HWDB if non-zero");
226 for (i=0; i<PCI_ACCESS_MAX; i++)
227 if (pci_methods[i] && pci_methods[i]->config)
228 pci_methods[i]->config(a);
233 pci_init_v35(struct pci_access *a)
236 a->error = pci_generic_error;
238 a->warning = pci_generic_warn;
240 a->debug = pci_generic_debug;
242 a->debug = pci_null_debug;
246 if (a->method >= PCI_ACCESS_MAX || !pci_methods[a->method])
247 a->error("This access method is not supported.");
248 a->methods = pci_methods[a->method];
253 for (i=0; probe_sequence[i] >= 0; i++)
255 struct pci_methods *m = pci_methods[probe_sequence[i]];
258 a->debug("Trying method %s...", m->name);
263 a->method = probe_sequence[i];
266 a->debug("...No.\n");
269 a->error("Cannot find any working access method.");
271 a->debug("Decided to use %s\n", a->methods->name);
275 STATIC_ALIAS(void pci_init(struct pci_access *a), pci_init_v35(a));
276 DEFINE_ALIAS(void pci_init_v30(struct pci_access *a), pci_init_v35);
277 SYMBOL_VERSION(pci_init_v30, pci_init@LIBPCI_3.0);
278 SYMBOL_VERSION(pci_init_v35, pci_init@@LIBPCI_3.5);
281 pci_cleanup(struct pci_access *a)
283 struct pci_dev *d, *e;
285 for (d=a->devices; d; d=e)
291 a->methods->cleanup(a);
292 pci_free_name_list(a);
294 pci_set_name_list_path(a, NULL, 0);