10 * "Plug and Play" functionality.
12 * We use the PnP enumerators to obtain identifiers for installed hardware,
13 * and the contents of a database to determine modules to be loaded to support
19 #include <bootstrap.h>
21 struct pnpinfo_stql pnp_devices;
22 static int pnp_devices_initted = 0;
24 static void pnp_discard(void);
27 * Perform complete enumeration sweep
30 COMMAND_SET(pnpscan, "pnpscan", "scan for PnP devices", pnp_scan);
33 pnp_scan(int argc, char *argv[])
40 if (pnp_devices_initted == 0) {
41 STAILQ_INIT(&pnp_devices);
42 pnp_devices_initted = 1;
48 while ((ch = getopt(argc, argv, "v")) != -1) {
55 /* getopt has already reported an error */
60 /* forget anything we think we knew */
63 /* iterate over all of the handlers */
64 for (hdlr = 0; pnphandlers[hdlr] != NULL; hdlr++) {
66 printf("Probing %s...\n", pnphandlers[hdlr]->pp_name);
67 pnphandlers[hdlr]->pp_enumerate();
71 pager_output("PNP scan summary:\n");
72 STAILQ_FOREACH(pi, &pnp_devices, pi_link) {
73 pager_output(STAILQ_FIRST(&pi->pi_ident)->id_ident); /* first ident should be canonical */
74 if (pi->pi_desc != NULL) {
76 pager_output(pi->pi_desc);
86 * Throw away anything we think we know about PnP devices.
93 while (STAILQ_FIRST(&pnp_devices) != NULL) {
94 pi = STAILQ_FIRST(&pnp_devices);
95 STAILQ_REMOVE_HEAD(&pnp_devices, pi_link);
101 * Add a unique identifier to (pi)
104 pnp_addident(struct pnpinfo *pi, char *ident)
108 STAILQ_FOREACH(id, &pi->pi_ident, id_link)
109 if (!strcmp(id->id_ident, ident))
110 return; /* already have this one */
112 id = malloc(sizeof(struct pnpident));
113 id->id_ident = strdup(ident);
114 STAILQ_INSERT_TAIL(&pi->pi_ident, id, id_link);
118 * Allocate a new pnpinfo struct
125 pi = malloc(sizeof(struct pnpinfo));
126 bzero(pi, sizeof(struct pnpinfo));
127 STAILQ_INIT(&pi->pi_ident);
132 * Release storage held by a pnpinfo struct
135 pnp_freeinfo(struct pnpinfo *pi)
139 while (!STAILQ_EMPTY(&pi->pi_ident)) {
140 id = STAILQ_FIRST(&pi->pi_ident);
141 STAILQ_REMOVE_HEAD(&pi->pi_ident, id_link);
155 * Add a new pnpinfo struct to the list.
158 pnp_addinfo(struct pnpinfo *pi)
160 STAILQ_INSERT_TAIL(&pnp_devices, pi, pi_link);
165 * Format an EISA id as a string in standard ISA PnP format, AAAIIRR
166 * where 'AAA' is the EISA vendor ID, II is the product ID and RR the revision ID.
169 pnp_eisaformat(u_int8_t *data)
171 static char idbuf[8];
172 const char hextoascii[] = "0123456789abcdef";
174 idbuf[0] = '@' + ((data[0] & 0x7c) >> 2);
175 idbuf[1] = '@' + (((data[0] & 0x3) << 3) + ((data[1] & 0xe0) >> 5));
176 idbuf[2] = '@' + (data[1] & 0x1f);
177 idbuf[3] = hextoascii[(data[2] >> 4)];
178 idbuf[4] = hextoascii[(data[2] & 0xf)];
179 idbuf[5] = hextoascii[(data[3] >> 4)];
180 idbuf[6] = hextoascii[(data[3] & 0xf)];