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cy_isa.c revision 1.23 
      1 /*	$NetBSD: cy_isa.c,v 1.23 2008/03/26 17:50:32 matt 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/cdefs.h>
     13 __KERNEL_RCSID(0, "$NetBSD: cy_isa.c,v 1.23 2008/03/26 17:50:32 matt Exp $");
     14 
     15 #include <sys/param.h>
     16 #include <sys/systm.h>
     17 #include <sys/device.h>
     18 
     19 #include <sys/bus.h>
     20 #include <sys/intr.h>
     21 
     22 #include <dev/isa/isavar.h>
     23 #include <dev/isa/isareg.h>
     24 
     25 #include <dev/ic/cd1400reg.h>
     26 #include <dev/ic/cyreg.h>
     27 #include <dev/ic/cyvar.h>
     28 
     29 int	cy_isa_probe(device_t, cfdata_t, void *);
     30 void	cy_isa_attach(device_t, device_t, void *);
     31 
     32 CFATTACH_DECL_NEW(cy_isa, sizeof(struct cy_softc),
     33     cy_isa_probe, cy_isa_attach, NULL, NULL);
     34 
     35 int
     36 cy_isa_probe(device_t parent, cfdata_t match, void *aux)
     37 {
     38 	struct isa_attach_args *ia = aux;
     39 	struct cy_softc sc;
     40 	int found;
     41 
     42 	if (ia->ia_niomem < 1)
     43 		return (0);
     44 	if (ia->ia_nirq < 1)
     45 		return (0);
     46 
     47 	sc.sc_memt = ia->ia_memt;
     48 	sc.sc_bustype = CY_BUSTYPE_ISA;
     49 
     50 	/* Disallow wildcarded memory address. */
     51 	if (ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM)
     52 		return 0;
     53 	if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
     54 		return 0;
     55 
     56 	if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, CY_MEMSIZE, 0,
     57 	    &sc.sc_bsh) != 0)
     58 		return 0;
     59 
     60 	found = cy_find(&sc);
     61 
     62 	bus_space_unmap(ia->ia_memt, sc.sc_bsh, CY_MEMSIZE);
     63 
     64 	if (found) {
     65 		ia->ia_niomem = 1;
     66 		ia->ia_iomem[0].ir_size = CY_MEMSIZE;
     67 
     68 		ia->ia_nirq = 1;
     69 
     70 		ia->ia_nio = 0;
     71 		ia->ia_ndrq = 0;
     72 	}
     73 	return (found);
     74 }
     75 
     76 void
     77 cy_isa_attach(device_t parent, device_t self, void *aux)
     78 {
     79 	struct cy_softc *sc = device_private(self);
     80 	struct isa_attach_args *ia = aux;
     81 
     82 	sc->sc_dev = self;
     83 	sc->sc_memt = ia->ia_memt;
     84 	sc->sc_bustype = CY_BUSTYPE_ISA;
     85 
     86 	printf(": Cyclades-Y multiport serial\n");
     87 
     88 	if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, CY_MEMSIZE, 0,
     89 	    &sc->sc_bsh) != 0) {
     90 		aprint_error_dev(sc->sc_dev,
     91 		    "unable to map device registers\n");
     92 		return;
     93 	}
     94 
     95 	if (cy_find(sc) == 0) {
     96 		aprint_error_dev(sc->sc_dev, "unable to find CD1400s\n");
     97 		return;
     98 	}
     99 
    100 	cy_attach(sc);
    101 
    102 	sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
    103 	    IST_EDGE, IPL_TTY, cy_intr, sc);
    104 	if (sc->sc_ih == NULL)
    105 		aprint_error_dev(sc->sc_dev, "unable to establish interrupt\n");
    106 }
    107