aic_isa.c revision 52417
1/*- 2 * Copyright (c) 1999 Luoqi Chen. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/dev/aic/aic_isa.c 52417 1999-10-21 08:56:53Z luoqi $ 27 */ 28 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/kernel.h> 32#include <sys/module.h> 33#include <sys/bus.h> 34 35#include <machine/bus_pio.h> 36#include <machine/bus.h> 37#include <machine/resource.h> 38#include <sys/rman.h> 39 40#include <isa/isavar.h> 41#include <dev/aic/aic6360reg.h> 42#include <dev/aic/aicvar.h> 43 44struct aic_isa_softc { 45 struct aic_softc sc_aic; 46 struct resource *sc_port; 47 struct resource *sc_irq; 48 struct resource *sc_drq; 49 void *sc_ih; 50}; 51 52static int aic_isa_alloc_resources __P((device_t)); 53static void aic_isa_release_resources __P((device_t)); 54static int aic_isa_probe __P((device_t dev)); 55static int aic_isa_attach __P((device_t dev)); 56 57static u_int aic_isa_ports[] = { 0x340, 0x140 }; 58#define AIC_ISA_NUMPORTS (sizeof(aic_isa_ports) / sizeof(aic_isa_ports[0])) 59#define AIC_ISA_PORTSIZE 0x20 60 61static int 62aic_isa_alloc_resources(device_t dev) 63{ 64 struct aic_isa_softc *sc = device_get_softc(dev); 65 int rid; 66 67 sc->sc_port = sc->sc_irq = sc->sc_drq = 0; 68 69 rid = 0; 70 sc->sc_port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 71 0ul, ~0ul, AIC_ISA_PORTSIZE, RF_ACTIVE); 72 if (!sc->sc_port) 73 return (ENOMEM); 74 75 if (isa_get_irq(dev) != -1) { 76 rid = 0; 77 sc->sc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 78 0ul, ~0ul, 1, RF_ACTIVE); 79 if (!sc->sc_irq) { 80 aic_isa_release_resources(dev); 81 return (ENOMEM); 82 } 83 } 84 85 if (isa_get_drq(dev) != -1) { 86 rid = 0; 87 sc->sc_drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid, 88 0ul, ~0ul, 1, RF_ACTIVE); 89 if (!sc->sc_drq) { 90 aic_isa_release_resources(dev); 91 return (ENOMEM); 92 } 93 } 94 95 sc->sc_aic.unit = device_get_unit(dev); 96 sc->sc_aic.tag = rman_get_bustag(sc->sc_port); 97 sc->sc_aic.bsh = rman_get_bushandle(sc->sc_port); 98 return (0); 99} 100 101static void 102aic_isa_release_resources(device_t dev) 103{ 104 struct aic_isa_softc *sc = device_get_softc(dev); 105 106 if (sc->sc_port) 107 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->sc_port); 108 if (sc->sc_irq) 109 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq); 110 if (sc->sc_drq) 111 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->sc_drq); 112 sc->sc_port = sc->sc_irq = sc->sc_drq = 0; 113} 114 115static int 116aic_isa_probe(device_t dev) 117{ 118 struct aic_isa_softc *sc = device_get_softc(dev); 119 struct aic_softc *aic = &sc->sc_aic; 120 int numports, i; 121 u_int port, *ports; 122 u_int8_t porta; 123 124 if (isa_get_vendorid(dev)) 125 return (ENXIO); 126 127 port = isa_get_port(dev); 128 if (port != -1) { 129 ports = &port; 130 numports = 1; 131 } else { 132 ports = aic_isa_ports; 133 numports = AIC_ISA_NUMPORTS; 134 } 135 136 for (i = 0; i < numports; i++) { 137 if (bus_set_resource(dev, SYS_RES_IOPORT, 0, ports[i], 138 AIC_ISA_PORTSIZE)) 139 continue; 140 if (aic_isa_alloc_resources(dev)) 141 continue; 142 if (!aic_probe(aic)) { 143 aic_isa_release_resources(dev); 144 break; 145 } 146 aic_isa_release_resources(dev); 147 } 148 149 if (i == numports) 150 return (ENXIO); 151 152 porta = aic_inb(aic, PORTA); 153 if (isa_get_irq(dev) == -1) 154 bus_set_resource(dev, SYS_RES_IRQ, 0, PORTA_IRQ(porta), 1); 155 if ((aic->flags & AIC_DMA_ENABLE) && isa_get_drq(dev) == -1) 156 bus_set_resource(dev, SYS_RES_DRQ, 0, PORTA_DRQ(porta), 1); 157 return (0); 158} 159 160static int 161aic_isa_attach(device_t dev) 162{ 163 struct aic_isa_softc *sc = device_get_softc(dev); 164 struct aic_softc *aic = &sc->sc_aic; 165 int error; 166 167 error = aic_isa_alloc_resources(dev); 168 if (error) { 169 device_printf(dev, "resource allocation failed\n"); 170 return (error); 171 } 172 173 error = aic_attach(aic); 174 if (error) { 175 device_printf(dev, "attach failed\n"); 176 aic_isa_release_resources(dev); 177 return (error); 178 } 179 180 error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_CAM, aic_intr, 181 aic, &sc->sc_ih); 182 if (error) { 183 device_printf(dev, "failed to register interrupt handler\n"); 184 aic_isa_release_resources(dev); 185 return (error); 186 } 187 return (0); 188} 189 190static int 191aic_isa_detach(device_t dev) 192{ 193 struct aic_isa_softc *sc = device_get_softc(dev); 194 struct aic_softc *aic = &sc->sc_aic; 195 int error; 196 197 error = aic_detach(aic); 198 if (error) { 199 device_printf(dev, "detach failed\n"); 200 return (error); 201 } 202 203 error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih); 204 if (error) { 205 device_printf(dev, "failed to unregister interrupt handler\n"); 206 } 207 208 aic_isa_release_resources(dev); 209 return (0); 210} 211 212static device_method_t aic_isa_methods[] = { 213 /* Device interface */ 214 DEVMETHOD(device_probe, aic_isa_probe), 215 DEVMETHOD(device_attach, aic_isa_attach), 216 DEVMETHOD(device_detach, aic_isa_detach), 217 { 0, 0 } 218}; 219 220static driver_t aic_isa_driver = { 221 "aic", 222 aic_isa_methods, sizeof(struct aic_isa_softc), 223}; 224 225static devclass_t aic_devclass; 226 227DRIVER_MODULE(aic, isa, aic_isa_driver, aic_devclass, 0, 0); 228