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1.1 misho 1: /*
2: * The PCI Library -- Initialization and related things
3: *
4: * Copyright (c) 1997--2008 Martin Mares <mj@ucw.cz>
5: *
6: * Can be freely distributed and used under the terms of the GNU GPL.
7: */
8:
9: #include <stdio.h>
10: #include <stdlib.h>
11: #include <stdarg.h>
12: #include <string.h>
13:
14: #include "internal.h"
15:
16: static struct pci_methods *pci_methods[PCI_ACCESS_MAX] = {
17: NULL,
18: #ifdef PCI_HAVE_PM_LINUX_SYSFS
19: &pm_linux_sysfs,
20: #else
21: NULL,
22: #endif
23: #ifdef PCI_HAVE_PM_LINUX_PROC
24: &pm_linux_proc,
25: #else
26: NULL,
27: #endif
28: #ifdef PCI_HAVE_PM_INTEL_CONF
29: &pm_intel_conf1,
30: &pm_intel_conf2,
31: #else
32: NULL,
33: NULL,
34: #endif
35: #ifdef PCI_HAVE_PM_FBSD_DEVICE
36: &pm_fbsd_device,
37: #else
38: NULL,
39: #endif
40: #ifdef PCI_HAVE_PM_AIX_DEVICE
41: &pm_aix_device,
42: #else
43: NULL,
44: #endif
45: #ifdef PCI_HAVE_PM_NBSD_LIBPCI
46: &pm_nbsd_libpci,
47: #else
48: NULL,
49: #endif
50: #ifdef PCI_HAVE_PM_OBSD_DEVICE
51: &pm_obsd_device,
52: #else
53: NULL,
54: #endif
55: #ifdef PCI_HAVE_PM_DUMP
56: &pm_dump,
57: #else
58: NULL,
59: #endif
60: };
61:
62: void *
63: pci_malloc(struct pci_access *a, int size)
64: {
65: void *x = malloc(size);
66:
67: if (!x)
68: a->error("Out of memory (allocation of %d bytes failed)", size);
69: return x;
70: }
71:
72: void
73: pci_mfree(void *x)
74: {
75: if (x)
76: free(x);
77: }
78:
79: char *
80: pci_strdup(struct pci_access *a, char *s)
81: {
82: int len = strlen(s) + 1;
83: char *t = pci_malloc(a, len);
84: memcpy(t, s, len);
85: return t;
86: }
87:
88: static void
89: pci_generic_error(char *msg, ...)
90: {
91: va_list args;
92:
93: va_start(args, msg);
94: fputs("pcilib: ", stderr);
95: vfprintf(stderr, msg, args);
96: fputc('\n', stderr);
97: exit(1);
98: }
99:
100: static void
101: pci_generic_warn(char *msg, ...)
102: {
103: va_list args;
104:
105: va_start(args, msg);
106: fputs("pcilib: ", stderr);
107: vfprintf(stderr, msg, args);
108: fputc('\n', stderr);
109: }
110:
111: static void
112: pci_generic_debug(char *msg, ...)
113: {
114: va_list args;
115:
116: va_start(args, msg);
117: vfprintf(stdout, msg, args);
118: va_end(args);
119: }
120:
121: static void
122: pci_null_debug(char *msg UNUSED, ...)
123: {
124: }
125:
126: int
127: pci_lookup_method(char *name)
128: {
129: int i;
130:
131: for (i=0; i<PCI_ACCESS_MAX; i++)
132: if (pci_methods[i] && !strcmp(pci_methods[i]->name, name))
133: return i;
134: return -1;
135: }
136:
137: char *
138: pci_get_method_name(int index)
139: {
140: if (index < 0 || index >= PCI_ACCESS_MAX)
141: return NULL;
142: else if (!pci_methods[index])
143: return "";
144: else
145: return pci_methods[index]->name;
146: }
147:
148: struct pci_access *
149: pci_alloc(void)
150: {
151: struct pci_access *a = malloc(sizeof(struct pci_access));
152: int i;
153:
154: memset(a, 0, sizeof(*a));
155: pci_set_name_list_path(a, PCI_PATH_IDS_DIR "/" PCI_IDS, 0);
156: #ifdef PCI_USE_DNS
157: pci_define_param(a, "net.domain", PCI_ID_DOMAIN, "DNS domain used for resolving of ID's");
158: pci_define_param(a, "net.cache_name", "~/.pciids-cache", "Name of the ID cache file");
159: a->id_lookup_mode = PCI_LOOKUP_CACHE;
160: #endif
161: for (i=0; i<PCI_ACCESS_MAX; i++)
162: if (pci_methods[i] && pci_methods[i]->config)
163: pci_methods[i]->config(a);
164: return a;
165: }
166:
167: void
168: pci_init(struct pci_access *a)
169: {
170: if (!a->error)
171: a->error = pci_generic_error;
172: if (!a->warning)
173: a->warning = pci_generic_warn;
174: if (!a->debug)
175: a->debug = pci_generic_debug;
176: if (!a->debugging)
177: a->debug = pci_null_debug;
178:
179: if (a->method)
180: {
181: if (a->method >= PCI_ACCESS_MAX || !pci_methods[a->method])
182: a->error("This access method is not supported.");
183: a->methods = pci_methods[a->method];
184: }
185: else
186: {
187: unsigned int i;
188: for (i=0; i<PCI_ACCESS_MAX; i++)
189: if (pci_methods[i])
190: {
191: a->debug("Trying method %d...", i);
192: if (pci_methods[i]->detect(a))
193: {
194: a->debug("...OK\n");
195: a->methods = pci_methods[i];
196: a->method = i;
197: break;
198: }
199: a->debug("...No.\n");
200: }
201: if (!a->methods)
202: a->error("Cannot find any working access method.");
203: }
204: a->debug("Decided to use %s\n", a->methods->name);
205: a->methods->init(a);
206: }
207:
208: void
209: pci_cleanup(struct pci_access *a)
210: {
211: struct pci_dev *d, *e;
212:
213: for (d=a->devices; d; d=e)
214: {
215: e = d->next;
216: pci_free_dev(d);
217: }
218: if (a->methods)
219: a->methods->cleanup(a);
220: pci_free_name_list(a);
221: pci_free_params(a);
222: pci_set_name_list_path(a, NULL, 0);
223: pci_mfree(a);
224: }