static int
configure(char* spec, DevConf* cf)
{
SDev *s, *sdev;
char *p;
int i;
if(sdindex(*spec) < 0)
error("bad sd spec");
if((p = strchr(cf->type, '/')) != nil)
*p++ = '\0';
for(i = 0; sdifc[i] != nil; i++)
if(strcmp(sdifc[i]->name, cf->type) == 0)
break;
if(sdifc[i] == nil)
error("sd type not found");
if(p)
*(p-1) = '/';
if(sdifc[i]->probe == nil)
error("sd type cannot probe");
sdev = sdifc[i]->probe(cf);
for(s=sdev; s; s=s->next)
s->idno = *spec;
sdadddevs(sdev);
return 0;
}
static void
sdreset(void)
{
int i;
/*
* Probe all known controller types and register any devices found.
*/
for(i = 0; sdifc[i] != nil; i++){
if(sdifc[i]->pnp == nil)
continue;
sdadddevs(sdifc[i]->pnp());
}
}
void
loopdev(char *name, int mode)
{
Chan *c;
Ctlr *volatile ctlr;
SDev *volatile sdev;
c = namec(name, Aopen, mode, 0);
ctlr = nil;
sdev = nil;
if(waserror()){
cclose(c);
if(ctlr)
free(ctlr);
if(sdev)
free(sdev);
nexterror();
}
ctlr = smalloc(sizeof *ctlr);
sdev = smalloc(sizeof *sdev);
sdev->ifc = &sdloopifc;
sdev->ctlr = ctlr;
sdev->nunit = 1;
sdev->idno = '0';
ctlr->sdev = sdev;
ctlr->c = c;
ctlr->mode = mode;
poperror();
lock(&ctlrlock);
ctlr->next = nil;
ctlr->prev = ctlrtail;
ctlrtail = ctlr;
if(ctlr->prev)
ctlr->prev->next = ctlr;
else
ctlrhead = ctlr;
unlock(&ctlrlock);
sdadddevs(sdev);
}