sys/dev/isa/cy_isa.c

   1 /*      $NetBSD: cy_isa.c,v 1.22 2007/10/19 12:00:15 ad 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 1.22 2007/10/19 12:00:15 ad 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 }