Home | History | Annotate | Line # | Download | only in isa
cy_isa.c revision 1.7 
      1 /*	$NetBSD: cy_isa.c,v 1.7 1997/10/20 18:43:08 thorpej Exp $	*/
      2 
      3 /*
      4  * cy.c
      5  *
      6  * Driver for Cyclades Cyclom-8/16/32 multiport serial cards
      7  * (currently not tested with Cyclom-32 cards)
      8  *
      9  * Timo Rossi, 1996
     10  *
     11  */
     12 
     13 #include <sys/param.h>
     14 #include <sys/systm.h>
     15 #include <sys/device.h>
     16 
     17 #include <machine/bus.h>
     18 #include <machine/intr.h>
     19 
     20 #include <dev/isa/isavar.h>
     21 #include <dev/isa/isareg.h>
     22 
     23 #include <dev/ic/cd1400reg.h>
     24 #include <dev/ic/cyreg.h>
     25 #include <dev/ic/cyvar.h>
     26 
     27 static int cy_probe_isa __P((struct device *, void *, void *));
     28 static void cy_attach_isa   __P((struct device *, struct device *, void *));
     29 
     30 struct cfattach cy_isa_ca = {
     31 	sizeof(struct cy_softc), cy_probe_isa, cy_attach_isa
     32 };
     33 
     34 static int
     35 cy_probe_isa(parent, match, aux)
     36 	struct device  *parent;
     37 	void *match, *aux;
     38 {
     39 	struct isa_attach_args *ia = aux;
     40 	struct cy_softc sc;
     41 	int found;
     42 
     43 	memcpy(&sc.sc_dev, match, sizeof(struct device));
     44 
     45 	sc.sc_memt = ia->ia_memt;
     46 	sc.sc_bustype = CY_BUSTYPE_ISA;
     47 
     48 	/* Disallow wildcarded i/o address. */
     49 	if (ia->ia_iobase == ISACF_PORT_DEFAULT)
     50 		return (0);
     51 
     52 	if (ia->ia_irq == IRQUNK) {
     53 		printf("%s: interrupt not defined\n", sc.sc_dev.dv_xname);
     54 		return 0;
     55 	}
     56 
     57 	if (bus_space_map(ia->ia_memt, ia->ia_maddr, CY_MEMSIZE, 0,
     58 	    &sc.sc_bsh) != 0)
     59 		return 0;
     60 
     61 	found = cy_find(&sc);
     62 
     63 	bus_space_unmap(ia->ia_memt, sc.sc_bsh, CY_MEMSIZE);
     64 
     65 	if (found) {
     66 		ia->ia_iosize = 0;
     67 		ia->ia_msize = CY_MEMSIZE;
     68 	}
     69 
     70 	return found;
     71 }
     72 
     73 static void
     74 cy_attach_isa(parent, self, aux)
     75 	struct device  *parent, *self;
     76 	void *aux;
     77 {
     78 	struct cy_softc *sc = (void *) self;
     79 	struct isa_attach_args *ia = aux;
     80 
     81 	sc->sc_memt = ia->ia_memt;
     82 	sc->sc_bustype = CY_BUSTYPE_ISA;
     83 
     84 	if (bus_space_map(ia->ia_memt, ia->ia_maddr, CY_MEMSIZE, 0,
     85 	    &sc->sc_bsh) != 0) {
     86 		printf(": cannot map mem space\n");
     87 		return;
     88 	}
     89 
     90 	if (cy_find(sc) == 0) {
     91 		printf(": cy_find failed\n");
     92 		return;
     93 	}
     94 
     95 	cy_attach(parent, self, aux);
     96 
     97 	sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq,
     98 	    IST_EDGE, IPL_TTY, cy_intr, sc);
     99 
    100 	if (sc->sc_ih == NULL)
    101 		printf("%s: couldn't establish interrupt", sc->sc_dev.dv_xname);
    102 }
    103