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 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/8.0/sys/dev/aic/aic_isa.c 170872 2007-06-17 05:55:54Z scottl $");
   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.dev = dev;
  105         sc->sc_aic.unit = device_get_unit(dev);
  106         sc->sc_aic.tag = rman_get_bustag(sc->sc_port);
  107         sc->sc_aic.bsh = rman_get_bushandle(sc->sc_port);
  108         return (0);
  109 }
  110 
  111 static void
  112 aic_isa_release_resources(device_t dev)
  113 {
  114         struct aic_isa_softc *sc = device_get_softc(dev);
  115 
  116         if (sc->sc_port)
  117                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->sc_port);
  118         if (sc->sc_irq)
  119                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
  120         if (sc->sc_drq)
  121                 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->sc_drq);
  122         sc->sc_port = sc->sc_irq = sc->sc_drq = 0;
  123 }
  124 
  125 static int
  126 aic_isa_probe(device_t dev)
  127 {
  128         struct aic_isa_softc *sc = device_get_softc(dev);
  129         struct aic_softc *aic = &sc->sc_aic;
  130         int numports, i;
  131         u_int port, *ports;
  132         u_int8_t porta;
  133 
  134         if (ISA_PNP_PROBE(device_get_parent(dev), dev, aic_ids) == ENXIO)
  135                 return (ENXIO);
  136 
  137         port = isa_get_port(dev);
  138         if (port != -1) {
  139                 ports = &port;
  140                 numports = 1;
  141         } else {
  142                 ports = aic_isa_ports;
  143                 numports = AIC_ISA_NUMPORTS;
  144         }
  145 
  146         for (i = 0; i < numports; i++) {
  147                 if (bus_set_resource(dev, SYS_RES_IOPORT, 0, ports[i],
  148                                      AIC_ISA_PORTSIZE))
  149                         continue;
  150                 if (aic_isa_alloc_resources(dev))
  151                         continue;
  152                 if (!aic_probe(aic)) {
  153                         aic_isa_release_resources(dev);
  154                         break;
  155                 }
  156                 aic_isa_release_resources(dev);
  157         }
  158 
  159         if (i == numports)
  160                 return (ENXIO);
  161 
  162         porta = aic_inb(aic, PORTA);
  163         if (isa_get_irq(dev) == -1)
  164                 bus_set_resource(dev, SYS_RES_IRQ, 0, PORTA_IRQ(porta), 1);
  165         if ((aic->flags & AIC_DMA_ENABLE) && isa_get_drq(dev) == -1)
  166                 bus_set_resource(dev, SYS_RES_DRQ, 0, PORTA_DRQ(porta), 1);
  167         device_set_desc(dev, "Adaptec 6260/6360 SCSI controller");
  168         return (0);
  169 }
  170 
  171 static int
  172 aic_isa_attach(device_t dev)
  173 {
  174         struct aic_isa_softc *sc = device_get_softc(dev);
  175         struct aic_softc *aic = &sc->sc_aic;
  176         int error;
  177 
  178         error = aic_isa_alloc_resources(dev);
  179         if (error) {
  180                 device_printf(dev, "resource allocation failed\n");
  181                 return (error);
  182         }
  183 
  184         error = aic_attach(aic);
  185         if (error) {
  186                 device_printf(dev, "attach failed\n");
  187                 aic_isa_release_resources(dev);
  188                 return (error);
  189         }
  190 
  191         error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_CAM|INTR_ENTROPY,
  192                                 NULL, aic_intr, aic, &sc->sc_ih);
  193         if (error) {
  194                 device_printf(dev, "failed to register interrupt handler\n");
  195                 aic_isa_release_resources(dev);
  196                 return (error);
  197         }
  198         return (0);
  199 }
  200 
  201 static int
  202 aic_isa_detach(device_t dev)
  203 {
  204         struct aic_isa_softc *sc = device_get_softc(dev);
  205         struct aic_softc *aic = &sc->sc_aic;
  206         int error;
  207 
  208         error = aic_detach(aic);
  209         if (error) {
  210                 device_printf(dev, "detach failed\n");
  211                 return (error);
  212         }
  213 
  214         error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
  215         if (error) {
  216                 device_printf(dev, "failed to unregister interrupt handler\n");
  217         }
  218 
  219         aic_isa_release_resources(dev);
  220         return (0);
  221 }
  222 
  223 static device_method_t aic_isa_methods[] = {
  224         /* Device interface */
  225         DEVMETHOD(device_probe,         aic_isa_probe),
  226         DEVMETHOD(device_attach,        aic_isa_attach),
  227         DEVMETHOD(device_detach,        aic_isa_detach),
  228         { 0, 0 }
  229 };
  230 
  231 static driver_t aic_isa_driver = {
  232         "aic",
  233         aic_isa_methods, sizeof(struct aic_isa_softc),
  234 };
  235 
  236 extern devclass_t aic_devclass;
  237 
  238 MODULE_DEPEND(aic, cam, 1,1,1);
  239 DRIVER_MODULE(aic, isa, aic_isa_driver, aic_devclass, 0, 0);

Cache object: 70ea784580dad0c42a26626ba238da8e


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