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 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/6.1/sys/dev/aic/aic_isa.c 146734 2005-05-29 04:42:30Z nyan $");
   29 
   30 #include <sys/param.h>
   31 #include <sys/kernel.h>
   32 #include <sys/module.h>
   33 #include <sys/bus.h>
   34 
   35 #include <machine/bus.h>
   36 #include <machine/resource.h>
   37 #include <sys/rman.h>
   38  
   39 #include <isa/isavar.h>
   40 #include <dev/aic/aic6360reg.h>
   41 #include <dev/aic/aicvar.h>
   42   
   43 struct aic_isa_softc {
   44         struct  aic_softc sc_aic;
   45         struct  resource *sc_port;
   46         struct  resource *sc_irq;
   47         struct  resource *sc_drq;
   48         void    *sc_ih;
   49 };
   50 
   51 static int aic_isa_alloc_resources(device_t);
   52 static void aic_isa_release_resources(device_t);
   53 static int aic_isa_probe(device_t);
   54 static int aic_isa_attach(device_t);
   55 
   56 static u_int aic_isa_ports[] = { 0x340, 0x140 };
   57 #define AIC_ISA_NUMPORTS (sizeof(aic_isa_ports) / sizeof(aic_isa_ports[0]))
   58 #define AIC_ISA_PORTSIZE 0x20
   59 
   60 static struct isa_pnp_id aic_ids[] = {
   61         { 0x15309004, "Adaptec AHA-1530P" },
   62         { 0x15209004, "Adaptec AHA-1520P" },
   63         { 0 }
   64 };
   65 
   66 static int
   67 aic_isa_alloc_resources(device_t dev)
   68 {
   69         struct aic_isa_softc *sc = device_get_softc(dev);
   70         int rid;
   71 
   72         sc->sc_port = sc->sc_irq = sc->sc_drq = 0;
   73 
   74         rid = 0;
   75         sc->sc_port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
   76                                         0ul, ~0ul, AIC_ISA_PORTSIZE, RF_ACTIVE);
   77         if (!sc->sc_port) {
   78                 device_printf(dev, "I/O port allocation failed\n");
   79                 return (ENOMEM);
   80         }
   81 
   82         if (isa_get_irq(dev) != -1) {
   83                 rid = 0;
   84                 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
   85                                                     RF_ACTIVE);
   86                 if (!sc->sc_irq) {
   87                         device_printf(dev, "IRQ allocation failed\n");
   88                         aic_isa_release_resources(dev);
   89                         return (ENOMEM);
   90                 }
   91         }
   92 
   93         if (isa_get_drq(dev) != -1) {
   94                 rid = 0;
   95                 sc->sc_drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &rid,
   96                                                     RF_ACTIVE);
   97                 if (!sc->sc_drq) {
   98                         device_printf(dev, "DRQ allocation failed\n");
   99                         aic_isa_release_resources(dev);
  100                         return (ENOMEM);
  101                 }
  102         }
  103 
  104         sc->sc_aic.unit = device_get_unit(dev);
  105         sc->sc_aic.tag = rman_get_bustag(sc->sc_port);
  106         sc->sc_aic.bsh = rman_get_bushandle(sc->sc_port);
  107         return (0);
  108 }
  109 
  110 static void
  111 aic_isa_release_resources(device_t dev)
  112 {
  113         struct aic_isa_softc *sc = device_get_softc(dev);
  114 
  115         if (sc->sc_port)
  116                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->sc_port);
  117         if (sc->sc_irq)
  118                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
  119         if (sc->sc_drq)
  120                 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->sc_drq);
  121         sc->sc_port = sc->sc_irq = sc->sc_drq = 0;
  122 }
  123 
  124 static int
  125 aic_isa_probe(device_t dev)
  126 {
  127         struct aic_isa_softc *sc = device_get_softc(dev);
  128         struct aic_softc *aic = &sc->sc_aic;
  129         int numports, i;
  130         u_int port, *ports;
  131         u_int8_t porta;
  132 
  133         if (ISA_PNP_PROBE(device_get_parent(dev), dev, aic_ids) == ENXIO)
  134                 return (ENXIO);
  135 
  136         port = isa_get_port(dev);
  137         if (port != -1) {
  138                 ports = &port;
  139                 numports = 1;
  140         } else {
  141                 ports = aic_isa_ports;
  142                 numports = AIC_ISA_NUMPORTS;
  143         }
  144 
  145         for (i = 0; i < numports; i++) {
  146                 if (bus_set_resource(dev, SYS_RES_IOPORT, 0, ports[i],
  147                                      AIC_ISA_PORTSIZE))
  148                         continue;
  149                 if (aic_isa_alloc_resources(dev))
  150                         continue;
  151                 if (!aic_probe(aic)) {
  152                         aic_isa_release_resources(dev);
  153                         break;
  154                 }
  155                 aic_isa_release_resources(dev);
  156         }
  157 
  158         if (i == numports)
  159                 return (ENXIO);
  160 
  161         porta = aic_inb(aic, PORTA);
  162         if (isa_get_irq(dev) == -1)
  163                 bus_set_resource(dev, SYS_RES_IRQ, 0, PORTA_IRQ(porta), 1);
  164         if ((aic->flags & AIC_DMA_ENABLE) && isa_get_drq(dev) == -1)
  165                 bus_set_resource(dev, SYS_RES_DRQ, 0, PORTA_DRQ(porta), 1);
  166         device_set_desc(dev, "Adaptec 6260/6360 SCSI controller");
  167         return (0);
  168 }
  169 
  170 static int
  171 aic_isa_attach(device_t dev)
  172 {
  173         struct aic_isa_softc *sc = device_get_softc(dev);
  174         struct aic_softc *aic = &sc->sc_aic;
  175         int error;
  176 
  177         error = aic_isa_alloc_resources(dev);
  178         if (error) {
  179                 device_printf(dev, "resource allocation failed\n");
  180                 return (error);
  181         }
  182 
  183         error = aic_attach(aic);
  184         if (error) {
  185                 device_printf(dev, "attach failed\n");
  186                 aic_isa_release_resources(dev);
  187                 return (error);
  188         }
  189 
  190         error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_CAM|INTR_ENTROPY,
  191                                 aic_intr, aic, &sc->sc_ih);
  192         if (error) {
  193                 device_printf(dev, "failed to register interrupt handler\n");
  194                 aic_isa_release_resources(dev);
  195                 return (error);
  196         }
  197         return (0);
  198 }
  199 
  200 static int
  201 aic_isa_detach(device_t dev)
  202 {
  203         struct aic_isa_softc *sc = device_get_softc(dev);
  204         struct aic_softc *aic = &sc->sc_aic;
  205         int error;
  206 
  207         error = aic_detach(aic);
  208         if (error) {
  209                 device_printf(dev, "detach failed\n");
  210                 return (error);
  211         }
  212 
  213         error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
  214         if (error) {
  215                 device_printf(dev, "failed to unregister interrupt handler\n");
  216         }
  217 
  218         aic_isa_release_resources(dev);
  219         return (0);
  220 }
  221 
  222 static device_method_t aic_isa_methods[] = {
  223         /* Device interface */
  224         DEVMETHOD(device_probe,         aic_isa_probe),
  225         DEVMETHOD(device_attach,        aic_isa_attach),
  226         DEVMETHOD(device_detach,        aic_isa_detach),
  227         { 0, 0 }
  228 };
  229 
  230 static driver_t aic_isa_driver = {
  231         "aic",
  232         aic_isa_methods, sizeof(struct aic_isa_softc),
  233 };
  234 
  235 extern devclass_t aic_devclass;
  236 
  237 MODULE_DEPEND(aic, cam, 1,1,1);
  238 DRIVER_MODULE(aic, isa, aic_isa_driver, aic_devclass, 0, 0);

Cache object: e0499544d34e5468fb8ef13e3ab269d9


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