2 * The PCI Library -- ID to Name Translation
4 * Copyright (c) 1997--2014 Martin Mares <mj@ucw.cz>
6 * Can be freely distributed and used under the terms of the GNU GPL.
16 static char *id_lookup(struct pci_access *a, int flags, int cat, int id1, int id2, int id3, int id4)
21 while (!(name = pci_id_lookup(a, flags, cat, id1, id2, id3, id4)))
23 if ((flags & PCI_LOOKUP_CACHE) && !a->id_cache_status)
25 if (pci_id_cache_load(a, flags))
28 if (!tried_hwdb && !(flags & (PCI_LOOKUP_SKIP_LOCAL | PCI_LOOKUP_NO_HWDB)))
31 if (name = pci_id_hwdb_lookup(a, cat, id1, id2, id3, id4))
33 pci_id_insert(a, cat, id1, id2, id3, id4, name, SRC_HWDB);
37 if (flags & PCI_LOOKUP_NETWORK)
39 if (name = pci_id_net_lookup(a, cat, id1, id2, id3, id4))
41 pci_id_insert(a, cat, id1, id2, id3, id4, name, SRC_NET);
43 pci_id_cache_dirty(a);
46 pci_id_insert(a, cat, id1, id2, id3, id4, "", SRC_NET);
47 /* We want to iterate the lookup to get the allocated ID entry from the hash */
52 return (name[0] ? name : NULL);
56 id_lookup_subsys(struct pci_access *a, int flags, int iv, int id, int isv, int isd)
59 if (iv > 0 && id > 0) /* Per-device lookup */
60 d = id_lookup(a, flags, ID_SUBSYSTEM, iv, id, isv, isd);
61 if (!d) /* Generic lookup */
62 d = id_lookup(a, flags, ID_GEN_SUBSYSTEM, isv, isd, 0, 0);
63 if (!d && iv == isv && id == isd) /* Check for subsystem == device */
64 d = id_lookup(a, flags, ID_DEVICE, iv, id, 0, 0);
69 format_name(char *buf, int size, int flags, char *name, char *num, char *unknown)
72 if ((flags & PCI_LOOKUP_NO_NUMBERS) && !name)
74 else if (flags & PCI_LOOKUP_NUMERIC)
75 res = snprintf(buf, size, "%s", num);
77 res = snprintf(buf, size, ((flags & PCI_LOOKUP_MIXED) ? "%s [%s]" : "%s %s"), unknown, num);
78 else if (!(flags & PCI_LOOKUP_MIXED))
79 res = snprintf(buf, size, "%s", name);
81 res = snprintf(buf, size, "%s [%s]", name, num);
82 if (res >= size && size >= 4)
83 buf[size-2] = buf[size-3] = buf[size-4] = '.';
84 else if (res < 0 || res >= size)
85 return "<pci_lookup_name: buffer too small>";
90 format_name_pair(char *buf, int size, int flags, char *v, char *d, char *num)
93 if ((flags & PCI_LOOKUP_NO_NUMBERS) && (!v || !d))
95 if (flags & PCI_LOOKUP_NUMERIC)
96 res = snprintf(buf, size, "%s", num);
97 else if (flags & PCI_LOOKUP_MIXED)
100 res = snprintf(buf, size, "%s %s [%s]", v, d, num);
102 res = snprintf(buf, size, "Device [%s]", num);
104 res = snprintf(buf, size, "%s Device [%s]", v, num);
109 res = snprintf(buf, size, "%s %s", v, d);
111 res = snprintf(buf, size, "Device %s", num);
113 res = snprintf(buf, size, "%s Device %s", v, num+5);
115 if (res >= size && size >= 4)
116 buf[size-2] = buf[size-3] = buf[size-4] = '.';
117 else if (res < 0 || res >= size)
118 return "<pci_lookup_name: buffer too small>";
123 pci_lookup_name(struct pci_access *a, char *buf, int size, int flags, ...)
126 char *v, *d, *cls, *pif;
127 int iv, id, isv, isd, icls, ipif;
128 char numbuf[16], pifbuf[32];
130 va_start(args, flags);
132 flags |= a->id_lookup_mode;
133 if (!(flags & PCI_LOOKUP_NO_NUMBERS))
135 if (a->numeric_ids > 1)
136 flags |= PCI_LOOKUP_MIXED;
137 else if (a->numeric_ids)
138 flags |= PCI_LOOKUP_NUMERIC;
140 if (flags & PCI_LOOKUP_MIXED)
141 flags &= ~PCI_LOOKUP_NUMERIC;
143 if (!a->id_hash && !(flags & (PCI_LOOKUP_NUMERIC | PCI_LOOKUP_SKIP_LOCAL)) && !a->id_load_failed)
144 pci_load_name_list(a);
146 switch (flags & 0xffff)
148 case PCI_LOOKUP_VENDOR:
149 iv = va_arg(args, int);
150 sprintf(numbuf, "%04x", iv);
152 return format_name(buf, size, flags, id_lookup(a, flags, ID_VENDOR, iv, 0, 0, 0), numbuf, "Vendor");
153 case PCI_LOOKUP_DEVICE:
154 iv = va_arg(args, int);
155 id = va_arg(args, int);
156 sprintf(numbuf, "%04x", id);
158 return format_name(buf, size, flags, id_lookup(a, flags, ID_DEVICE, iv, id, 0, 0), numbuf, "Device");
159 case PCI_LOOKUP_VENDOR | PCI_LOOKUP_DEVICE:
160 iv = va_arg(args, int);
161 id = va_arg(args, int);
162 sprintf(numbuf, "%04x:%04x", iv, id);
163 v = id_lookup(a, flags, ID_VENDOR, iv, 0, 0, 0);
164 d = id_lookup(a, flags, ID_DEVICE, iv, id, 0, 0);
166 return format_name_pair(buf, size, flags, v, d, numbuf);
167 case PCI_LOOKUP_SUBSYSTEM | PCI_LOOKUP_VENDOR:
168 isv = va_arg(args, int);
169 sprintf(numbuf, "%04x", isv);
170 v = id_lookup(a, flags, ID_VENDOR, isv, 0, 0, 0);
172 return format_name(buf, size, flags, v, numbuf, "Unknown vendor");
173 case PCI_LOOKUP_SUBSYSTEM | PCI_LOOKUP_DEVICE:
174 iv = va_arg(args, int);
175 id = va_arg(args, int);
176 isv = va_arg(args, int);
177 isd = va_arg(args, int);
178 sprintf(numbuf, "%04x", isd);
180 return format_name(buf, size, flags, id_lookup_subsys(a, flags, iv, id, isv, isd), numbuf, "Device");
181 case PCI_LOOKUP_VENDOR | PCI_LOOKUP_DEVICE | PCI_LOOKUP_SUBSYSTEM:
182 iv = va_arg(args, int);
183 id = va_arg(args, int);
184 isv = va_arg(args, int);
185 isd = va_arg(args, int);
186 v = id_lookup(a, flags, ID_VENDOR, isv, 0, 0, 0);
187 d = id_lookup_subsys(a, flags, iv, id, isv, isd);
188 sprintf(numbuf, "%04x:%04x", isv, isd);
190 return format_name_pair(buf, size, flags, v, d, numbuf);
191 case PCI_LOOKUP_CLASS:
192 icls = va_arg(args, int);
193 sprintf(numbuf, "%04x", icls);
194 cls = id_lookup(a, flags, ID_SUBCLASS, icls >> 8, icls & 0xff, 0, 0);
195 if (!cls && (cls = id_lookup(a, flags, ID_CLASS, icls >> 8, 0, 0, 0)))
197 if (!(flags & PCI_LOOKUP_NUMERIC)) /* Include full class number */
198 flags |= PCI_LOOKUP_MIXED;
201 return format_name(buf, size, flags, cls, numbuf, "Class");
202 case PCI_LOOKUP_PROGIF:
203 icls = va_arg(args, int);
204 ipif = va_arg(args, int);
205 sprintf(numbuf, "%02x", ipif);
206 pif = id_lookup(a, flags, ID_PROGIF, icls >> 8, icls & 0xff, ipif, 0);
207 if (!pif && icls == 0x0101 && !(ipif & 0x70))
209 /* IDE controllers have complex prog-if semantics */
210 sprintf(pifbuf, "%s%s%s%s%s",
211 (ipif & 0x80) ? " Master" : "",
212 (ipif & 0x08) ? " SecP" : "",
213 (ipif & 0x04) ? " SecO" : "",
214 (ipif & 0x02) ? " PriP" : "",
215 (ipif & 0x01) ? " PriO" : "");
221 return format_name(buf, size, flags, pif, numbuf, "ProgIf");
224 return "<pci_lookup_name: invalid request>";