1/* $NetBSD: aha_isa.c,v 1.28 2009/09/21 08:12:47 tsutsui Exp $ */ 2 3/*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include <sys/cdefs.h> 33__KERNEL_RCSID(0, "$NetBSD: aha_isa.c,v 1.28 2009/09/21 08:12:47 tsutsui Exp $"); 34 35#include <sys/param.h> 36#include <sys/systm.h> 37#include <sys/device.h> 38 39#include <sys/bus.h> 40#include <sys/intr.h> 41 42#include <dev/scsipi/scsi_all.h> 43#include <dev/scsipi/scsipi_all.h> 44#include <dev/scsipi/scsiconf.h> 45 46#include <dev/isa/isavar.h> 47#include <dev/isa/isadmavar.h> 48 49#include <dev/ic/ahareg.h> 50#include <dev/ic/ahavar.h> 51 52#define AHA_ISA_IOSIZE 4 53 54static int aha_isa_probe(device_t, cfdata_t, void *); 55static void aha_isa_attach(device_t, device_t, void *); 56 57CFATTACH_DECL_NEW(aha_isa, sizeof(struct aha_softc), 58 aha_isa_probe, aha_isa_attach, NULL, NULL); 59 60/* 61 * Check the slots looking for a board we recognise 62 * If we find one, note it's address (slot) and call 63 * the actual probe routine to check it out. 64 */ 65int 66aha_isa_probe(device_t parent, cfdata_t match, void *aux) 67{ 68 struct isa_attach_args *ia = aux; 69 bus_space_tag_t iot = ia->ia_iot; 70 bus_space_handle_t ioh; 71 struct aha_probe_data apd; 72 int rv; 73 74 if (ia->ia_nio < 1) 75 return (0); 76 if (ia->ia_nirq < 1) 77 return (0); 78 if (ia->ia_ndrq < 1) 79 return (0); 80 81 if (ISA_DIRECT_CONFIG(ia)) 82 return (0); 83 84 /* Disallow wildcarded i/o address. */ 85 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 86 return (0); 87 88 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) 89 return (0); 90 91 rv = aha_find(iot, ioh, &apd); 92 93 bus_space_unmap(iot, ioh, AHA_ISA_IOSIZE); 94 95 if (rv) { 96 if (ia->ia_irq[0].ir_irq != ISA_UNKNOWN_IRQ && 97 ia->ia_irq[0].ir_irq != apd.sc_irq) 98 return (0); 99 if (ia->ia_drq[0].ir_drq != ISA_UNKNOWN_DRQ && 100 ia->ia_drq[0].ir_drq != apd.sc_drq) 101 return (0); 102 103 ia->ia_nio = 1; 104 ia->ia_io[0].ir_size = AHA_ISA_IOSIZE; 105 106 ia->ia_nirq = 1; 107 ia->ia_irq[0].ir_irq = apd.sc_irq; 108 109 ia->ia_ndrq = 1; 110 ia->ia_drq[0].ir_drq = apd.sc_drq; 111 112 ia->ia_niomem = 0; 113 } 114 return (rv); 115} 116 117/* 118 * Attach all the sub-devices we can find 119 */ 120void 121aha_isa_attach(device_t parent, device_t self, void *aux) 122{ 123 struct isa_attach_args *ia = aux; 124 struct aha_softc *sc = device_private(self); 125 bus_space_tag_t iot = ia->ia_iot; 126 bus_space_handle_t ioh; 127 struct aha_probe_data apd; 128 isa_chipset_tag_t ic = ia->ia_ic; 129 int error; 130 131 sc->sc_dev = self; 132 133 printf("\n"); 134 135 if (bus_space_map(iot, ia->ia_io[0].ir_addr, AHA_ISA_IOSIZE, 0, &ioh)) { 136 aprint_error_dev(self, "can't map i/o space\n"); 137 return; 138 } 139 140 sc->sc_iot = iot; 141 sc->sc_ioh = ioh; 142 sc->sc_dmat = ia->ia_dmat; 143 if (!aha_find(iot, ioh, &apd)) { 144 aprint_error_dev(self, "aha_find failed\n"); 145 return; 146 } 147 148 if (apd.sc_drq != -1) { 149 if ((error = isa_dmacascade(ic, apd.sc_drq)) != 0) { 150 aprint_error_dev(self, 151 "unable to cascade DRQ, error = %d\n", error); 152 return; 153 } 154 } 155 156 sc->sc_ih = isa_intr_establish(ic, apd.sc_irq, IST_EDGE, IPL_BIO, 157 aha_intr, sc); 158 if (sc->sc_ih == NULL) { 159 aprint_error_dev(self, "couldn't establish interrupt\n"); 160 return; 161 } 162 163 aha_attach(sc, &apd); 164} 165