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cy_isa.c revision 1.12 
      1 /*	$NetBSD: cy_isa.c,v 1.12 2001/01/20 02:26:39 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 #include <sys/param.h>
     13 #include <sys/systm.h>
     14 #include <sys/device.h>
     15 
     16 #include <machine/bus.h>
     17 #include <machine/intr.h>
     18 
     19 #include <dev/isa/isavar.h>
     20 #include <dev/isa/isareg.h>
     21 
     22 #include <dev/ic/cd1400reg.h>
     23 #include <dev/ic/cyreg.h>
     24 #include <dev/ic/cyvar.h>
     25 
     26 int	cy_isa_probe(struct device *, struct cfdata *, void *);
     27 void	cy_isa_attach(struct device *, struct device *, void *);
     28 
     29 struct cfattach cy_isa_ca = {
     30 	sizeof(struct cy_softc), cy_isa_probe, cy_isa_attach
     31 };
     32 
     33 int
     34 cy_isa_probe(struct device *parent, struct cfdata *match, void *aux)
     35 {
     36 	struct isa_attach_args *ia = aux;
     37 	struct cy_softc sc;
     38 	int found;
     39 
     40 	memcpy(&sc.sc_dev, match, sizeof(struct device));
     41 
     42 	sc.sc_memt = ia->ia_memt;
     43 	sc.sc_bustype = CY_BUSTYPE_ISA;
     44 
     45 	/* Disallow wildcarded memory address. */
     46 	if (ia->ia_maddr == ISACF_IOMEM_DEFAULT)
     47 		return (0);
     48 
     49 	if (ia->ia_irq == IRQUNK)
     50 		return 0;
     51 
     52 	if (bus_space_map(ia->ia_memt, ia->ia_maddr, CY_MEMSIZE, 0,
     53 	    &sc.sc_bsh) != 0)
     54 		return 0;
     55 
     56 	found = cy_find(&sc);
     57 
     58 	bus_space_unmap(ia->ia_memt, sc.sc_bsh, CY_MEMSIZE);
     59 
     60 	if (found) {
     61 		ia->ia_iosize = 0;
     62 		ia->ia_msize = CY_MEMSIZE;
     63 	}
     64 
     65 	return (found);
     66 }
     67 
     68 void
     69 cy_isa_attach(struct device *parent, struct device *self, void *aux)
     70 {
     71 	struct cy_softc *sc = (void *) self;
     72 	struct isa_attach_args *ia = aux;
     73 
     74 	sc->sc_memt = ia->ia_memt;
     75 	sc->sc_bustype = CY_BUSTYPE_ISA;
     76 
     77 	printf(": Cyclades-Y multiport serial\n");
     78 
     79 	if (bus_space_map(ia->ia_memt, ia->ia_maddr, CY_MEMSIZE, 0,
     80 	    &sc->sc_bsh) != 0) {
     81 		printf("%s: unable to map device registers\n",
     82 		    sc->sc_dev.dv_xname);
     83 		return;
     84 	}
     85 
     86 	if (cy_find(sc) == 0) {
     87 		printf("%s: unable to find CD1400s\n", sc->sc_dev.dv_xname);
     88 		return;
     89 	}
     90 
     91 	cy_attach(sc);
     92 
     93 	sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq,
     94 	    IST_EDGE, IPL_TTY, cy_intr, sc);
     95 	if (sc->sc_ih == NULL)
     96 		printf("%s: unable to establish interrupt",
     97 		    sc->sc_dev.dv_xname);
     98 }
     99