The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/aic/aic_isa.c

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    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: stable/4/sys/dev/aic/aic_isa.c 55997 2000-01-14 23:42:36Z imp $
   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   
   44 struct 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 
   52 static int aic_isa_alloc_resources __P((device_t));
   53 static void aic_isa_release_resources __P((device_t));
   54 static int aic_isa_probe __P((device_t));
   55 static int aic_isa_attach __P((device_t));
   56 
   57 static 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 
   61 static int
   62 aic_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 
  101 static void
  102 aic_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 
  115 static int
  116 aic_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         device_set_desc(dev, "Adaptec 6260/6360 SCSI controller");
  158         return (0);
  159 }
  160 
  161 static int
  162 aic_isa_attach(device_t dev)
  163 {
  164         struct aic_isa_softc *sc = device_get_softc(dev);
  165         struct aic_softc *aic = &sc->sc_aic;
  166         int error;
  167 
  168         error = aic_isa_alloc_resources(dev);
  169         if (error) {
  170                 device_printf(dev, "resource allocation failed\n");
  171                 return (error);
  172         }
  173 
  174         error = aic_attach(aic);
  175         if (error) {
  176                 device_printf(dev, "attach failed\n");
  177                 aic_isa_release_resources(dev);
  178                 return (error);
  179         }
  180 
  181         error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_CAM, aic_intr,
  182                                 aic, &sc->sc_ih);
  183         if (error) {
  184                 device_printf(dev, "failed to register interrupt handler\n");
  185                 aic_isa_release_resources(dev);
  186                 return (error);
  187         }
  188         return (0);
  189 }
  190 
  191 static int
  192 aic_isa_detach(device_t dev)
  193 {
  194         struct aic_isa_softc *sc = device_get_softc(dev);
  195         struct aic_softc *aic = &sc->sc_aic;
  196         int error;
  197 
  198         error = aic_detach(aic);
  199         if (error) {
  200                 device_printf(dev, "detach failed\n");
  201                 return (error);
  202         }
  203 
  204         error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
  205         if (error) {
  206                 device_printf(dev, "failed to unregister interrupt handler\n");
  207         }
  208 
  209         aic_isa_release_resources(dev);
  210         return (0);
  211 }
  212 
  213 static device_method_t aic_isa_methods[] = {
  214         /* Device interface */
  215         DEVMETHOD(device_probe,         aic_isa_probe),
  216         DEVMETHOD(device_attach,        aic_isa_attach),
  217         DEVMETHOD(device_detach,        aic_isa_detach),
  218         { 0, 0 }
  219 };
  220 
  221 static driver_t aic_isa_driver = {
  222         "aic",
  223         aic_isa_methods, sizeof(struct aic_isa_softc),
  224 };
  225 
  226 extern devclass_t aic_devclass;
  227 
  228 DRIVER_MODULE(aic, isa, aic_isa_driver, aic_devclass, 0, 0);

Cache object: 52f6f888dde5603c62e51e47dfd71ecd


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