1 /* $NetBSD: bha_isa.c,v 1.5 1996/10/21 22:40:26 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1996 Charles M. Hannum. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Charles M. Hannum. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/device.h> 36 37 #include <machine/bus.h> 38 #include <machine/intr.h> 39 40 #include <scsi/scsi_all.h> 41 #include <scsi/scsiconf.h> 42 43 #include <dev/isa/isavar.h> 44 #include <dev/isa/isadmavar.h> 45 46 #include <dev/ic/bhareg.h> 47 #include <dev/ic/bhavar.h> 48 49 #define BHA_ISA_IOSIZE 4 50 51 int bha_isa_probe __P((struct device *, void *, void *)); 52 void bha_isa_attach __P((struct device *, struct device *, void *)); 53 54 struct cfattach bha_isa_ca = { 55 sizeof(struct bha_softc), bha_isa_probe, bha_isa_attach 56 }; 57 58 /* 59 * Check the slots looking for a board we recognise 60 * If we find one, note it's address (slot) and call 61 * the actual probe routine to check it out. 62 */ 63 int 64 bha_isa_probe(parent, match, aux) 65 struct device *parent; 66 void *match, *aux; 67 { 68 struct isa_attach_args *ia = aux; 69 struct bha_softc sc; 70 bus_space_tag_t iot = ia->ia_iot; 71 bus_space_handle_t ioh; 72 int rv; 73 74 if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh)) 75 return (0); 76 77 rv = bha_find(iot, ioh, &sc); 78 79 bus_space_unmap(iot, ioh, BHA_ISA_IOSIZE); 80 81 if (rv) { 82 if (ia->ia_irq != -1 && ia->ia_irq != sc.sc_irq) 83 return (0); 84 if (ia->ia_drq != -1 && ia->ia_drq != sc.sc_drq) 85 return (0); 86 ia->ia_irq = sc.sc_irq; 87 ia->ia_drq = sc.sc_drq; 88 ia->ia_msize = 0; 89 ia->ia_iosize = BHA_ISA_IOSIZE; 90 } 91 return (rv); 92 } 93 94 /* 95 * Attach all the sub-devices we can find 96 */ 97 void 98 bha_isa_attach(parent, self, aux) 99 struct device *parent, *self; 100 void *aux; 101 { 102 struct isa_attach_args *ia = aux; 103 struct bha_softc *sc = (void *)self; 104 bus_space_tag_t iot = ia->ia_iot; 105 bus_space_handle_t ioh; 106 isa_chipset_tag_t ic = ia->ia_ic; 107 108 printf("\n"); 109 110 if (bus_space_map(iot, ia->ia_iobase, BHA_ISA_IOSIZE, 0, &ioh)) 111 panic("bha_attach: bus_space_map failed!"); 112 113 sc->sc_iot = iot; 114 sc->sc_ioh = ioh; 115 if (!bha_find(iot, ioh, sc)) 116 panic("bha_attach: bha_find failed!"); 117 118 if (sc->sc_drq != -1) 119 isa_dmacascade(sc->sc_drq); 120 121 sc->sc_ih = isa_intr_establish(ic, sc->sc_irq, IST_EDGE, IPL_BIO, 122 bha_intr, sc); 123 if (sc->sc_ih == NULL) { 124 printf("%s: couldn't establish interrupt\n", 125 sc->sc_dev.dv_xname); 126 return; 127 } 128 129 bha_attach(sc); 130 } 131