1 /* $NetBSD: cy_isa.c,v 1.24 2023/11/20 04:26:34 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/cdefs.h> 13 __KERNEL_RCSID(0, "$NetBSD: cy_isa.c,v 1.24 2023/11/20 04:26:34 thorpej Exp $"); 14 15 #include <sys/param.h> 16 #include <sys/systm.h> 17 #include <sys/device.h> 18 #include <sys/kmem.h> 19 20 #include <sys/bus.h> 21 #include <sys/intr.h> 22 23 #include <dev/isa/isavar.h> 24 #include <dev/isa/isareg.h> 25 26 #include <dev/ic/cd1400reg.h> 27 #include <dev/ic/cyreg.h> 28 #include <dev/ic/cyvar.h> 29 30 int cy_isa_probe(device_t, cfdata_t, void *); 31 void cy_isa_attach(device_t, device_t, void *); 32 33 CFATTACH_DECL_NEW(cy_isa, sizeof(struct cy_softc), 34 cy_isa_probe, cy_isa_attach, NULL, NULL); 35 36 int 37 cy_isa_probe(device_t parent, cfdata_t match, void *aux) 38 { 39 struct isa_attach_args *ia = aux; 40 struct cy_softc *sc; 41 int found = 0; 42 43 if (ia->ia_niomem < 1) 44 return (0); 45 if (ia->ia_nirq < 1) 46 return (0); 47 48 /* Disallow wildcarded memory address. */ 49 if (ia->ia_iomem[0].ir_addr == ISA_UNKNOWN_IOMEM) 50 return 0; 51 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 52 return 0; 53 54 sc = kmem_zalloc(sizeof(*sc), KM_SLEEP); 55 56 sc->sc_memt = ia->ia_memt; 57 sc->sc_bustype = CY_BUSTYPE_ISA; 58 59 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, CY_MEMSIZE, 0, 60 &sc->sc_bsh) != 0) 61 goto out; 62 63 found = cy_find(sc); 64 65 bus_space_unmap(ia->ia_memt, sc->sc_bsh, CY_MEMSIZE); 66 67 if (found) { 68 ia->ia_niomem = 1; 69 ia->ia_iomem[0].ir_size = CY_MEMSIZE; 70 71 ia->ia_nirq = 1; 72 73 ia->ia_nio = 0; 74 ia->ia_ndrq = 0; 75 } 76 out: 77 kmem_free(sc, sizeof(*sc)); 78 return (found); 79 } 80 81 void 82 cy_isa_attach(device_t parent, device_t self, void *aux) 83 { 84 struct cy_softc *sc = device_private(self); 85 struct isa_attach_args *ia = aux; 86 87 sc->sc_dev = self; 88 sc->sc_memt = ia->ia_memt; 89 sc->sc_bustype = CY_BUSTYPE_ISA; 90 91 printf(": Cyclades-Y multiport serial\n"); 92 93 if (bus_space_map(ia->ia_memt, ia->ia_iomem[0].ir_addr, CY_MEMSIZE, 0, 94 &sc->sc_bsh) != 0) { 95 aprint_error_dev(sc->sc_dev, 96 "unable to map device registers\n"); 97 return; 98 } 99 100 if (cy_find(sc) == 0) { 101 aprint_error_dev(sc->sc_dev, "unable to find CD1400s\n"); 102 return; 103 } 104 105 cy_attach(sc); 106 107 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 108 IST_EDGE, IPL_TTY, cy_intr, sc); 109 if (sc->sc_ih == NULL) 110 aprint_error_dev(sc->sc_dev, "unable to establish interrupt\n"); 111 } 112