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  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 1999 Luoqi Chen.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: stable/12/sys/dev/aic/aic_isa.c 327102 2017-12-23 06:49:27Z imp $");
   31 
   32 #include <sys/param.h>
   33 #include <sys/callout.h>
   34 #include <sys/kernel.h>
   35 #include <sys/lock.h>
   36 #include <sys/module.h>
   37 #include <sys/mutex.h>
   38 #include <sys/bus.h>
   39 
   40 #include <machine/bus.h>
   41 #include <machine/resource.h>
   42 #include <sys/rman.h>
   43  
   44 #include <isa/isavar.h>
   45 #include <dev/aic/aic6360reg.h>
   46 #include <dev/aic/aicvar.h>
   47   
   48 struct aic_isa_softc {
   49         struct  aic_softc sc_aic;
   50         struct  resource *sc_port;
   51         struct  resource *sc_irq;
   52         struct  resource *sc_drq;
   53         void    *sc_ih;
   54 };
   55 
   56 static int aic_isa_alloc_resources(device_t);
   57 static void aic_isa_release_resources(device_t);
   58 static int aic_isa_probe(device_t);
   59 static int aic_isa_attach(device_t);
   60 
   61 static u_int aic_isa_ports[] = { 0x340, 0x140 };
   62 
   63 #define AIC_ISA_NUMPORTS nitems(aic_isa_ports)
   64 #define AIC_ISA_PORTSIZE 0x20
   65 
   66 static struct isa_pnp_id aic_ids[] = {
   67         { 0x15309004, "Adaptec AHA-1530P" },
   68         { 0x15209004, "Adaptec AHA-1520P" },
   69         { 0 }
   70 };
   71 
   72 static int
   73 aic_isa_alloc_resources(device_t dev)
   74 {
   75         struct aic_isa_softc *sc = device_get_softc(dev);
   76         int rid;
   77 
   78         sc->sc_port = sc->sc_irq = sc->sc_drq = NULL;
   79 
   80         rid = 0;
   81         sc->sc_port = bus_alloc_resource_anywhere(dev, SYS_RES_IOPORT, &rid,
   82                                                 AIC_ISA_PORTSIZE, RF_ACTIVE);
   83         if (!sc->sc_port) {
   84                 device_printf(dev, "I/O port allocation failed\n");
   85                 return (ENOMEM);
   86         }
   87 
   88         if (isa_get_irq(dev) != -1) {
   89                 rid = 0;
   90                 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
   91                                                     RF_ACTIVE);
   92                 if (!sc->sc_irq) {
   93                         device_printf(dev, "IRQ allocation failed\n");
   94                         aic_isa_release_resources(dev);
   95                         return (ENOMEM);
   96                 }
   97         }
   98 
   99         if (isa_get_drq(dev) != -1) {
  100                 rid = 0;
  101                 sc->sc_drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &rid,
  102                                                     RF_ACTIVE);
  103                 if (!sc->sc_drq) {
  104                         device_printf(dev, "DRQ allocation failed\n");
  105                         aic_isa_release_resources(dev);
  106                         return (ENOMEM);
  107                 }
  108         }
  109 
  110         sc->sc_aic.dev = dev;
  111         sc->sc_aic.res = sc->sc_port;
  112         mtx_init(&sc->sc_aic.lock, "aic", NULL, MTX_DEF);
  113         return (0);
  114 }
  115 
  116 static void
  117 aic_isa_release_resources(device_t dev)
  118 {
  119         struct aic_isa_softc *sc = device_get_softc(dev);
  120 
  121         if (sc->sc_port)
  122                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->sc_port);
  123         if (sc->sc_irq)
  124                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
  125         if (sc->sc_drq)
  126                 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->sc_drq);
  127         sc->sc_port = sc->sc_irq = sc->sc_drq = NULL;
  128         mtx_destroy(&sc->sc_aic.lock);
  129 }
  130 
  131 static int
  132 aic_isa_probe(device_t dev)
  133 {
  134         struct aic_isa_softc *sc = device_get_softc(dev);
  135         struct aic_softc *aic = &sc->sc_aic;
  136         int numports, i;
  137         u_int port, *ports;
  138         u_int8_t porta;
  139 
  140         if (ISA_PNP_PROBE(device_get_parent(dev), dev, aic_ids) == ENXIO)
  141                 return (ENXIO);
  142 
  143         port = isa_get_port(dev);
  144         if (port != -1) {
  145                 ports = &port;
  146                 numports = 1;
  147         } else {
  148                 ports = aic_isa_ports;
  149                 numports = AIC_ISA_NUMPORTS;
  150         }
  151 
  152         for (i = 0; i < numports; i++) {
  153                 if (bus_set_resource(dev, SYS_RES_IOPORT, 0, ports[i],
  154                                      AIC_ISA_PORTSIZE))
  155                         continue;
  156                 if (aic_isa_alloc_resources(dev))
  157                         continue;
  158                 if (aic_probe(aic) == 0)
  159                         break;
  160                 aic_isa_release_resources(dev);
  161         }
  162 
  163         if (i == numports)
  164                 return (ENXIO);
  165 
  166         porta = aic_inb(aic, PORTA);
  167         aic_isa_release_resources(dev);
  168         if (isa_get_irq(dev) == -1)
  169                 bus_set_resource(dev, SYS_RES_IRQ, 0, PORTA_IRQ(porta), 1);
  170         if ((aic->flags & AIC_DMA_ENABLE) && isa_get_drq(dev) == -1)
  171                 bus_set_resource(dev, SYS_RES_DRQ, 0, PORTA_DRQ(porta), 1);
  172         device_set_desc(dev, "Adaptec 6260/6360 SCSI controller");
  173         return (0);
  174 }
  175 
  176 static int
  177 aic_isa_attach(device_t dev)
  178 {
  179         struct aic_isa_softc *sc = device_get_softc(dev);
  180         struct aic_softc *aic = &sc->sc_aic;
  181         int error;
  182 
  183         error = aic_isa_alloc_resources(dev);
  184         if (error) {
  185                 device_printf(dev, "resource allocation failed\n");
  186                 return (error);
  187         }
  188 
  189         error = aic_attach(aic);
  190         if (error) {
  191                 device_printf(dev, "attach failed\n");
  192                 aic_isa_release_resources(dev);
  193                 return (error);
  194         }
  195 
  196         error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_CAM | INTR_ENTROPY |
  197             INTR_MPSAFE, NULL, aic_intr, aic, &sc->sc_ih);
  198         if (error) {
  199                 device_printf(dev, "failed to register interrupt handler\n");
  200                 aic_isa_release_resources(dev);
  201                 return (error);
  202         }
  203         return (0);
  204 }
  205 
  206 static int
  207 aic_isa_detach(device_t dev)
  208 {
  209         struct aic_isa_softc *sc = device_get_softc(dev);
  210         struct aic_softc *aic = &sc->sc_aic;
  211         int error;
  212 
  213         error = aic_detach(aic);
  214         if (error) {
  215                 device_printf(dev, "detach failed\n");
  216                 return (error);
  217         }
  218 
  219         error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
  220         if (error) {
  221                 device_printf(dev, "failed to unregister interrupt handler\n");
  222         }
  223 
  224         aic_isa_release_resources(dev);
  225         return (0);
  226 }
  227 
  228 static device_method_t aic_isa_methods[] = {
  229         /* Device interface */
  230         DEVMETHOD(device_probe,         aic_isa_probe),
  231         DEVMETHOD(device_attach,        aic_isa_attach),
  232         DEVMETHOD(device_detach,        aic_isa_detach),
  233         { 0, 0 }
  234 };
  235 
  236 static driver_t aic_isa_driver = {
  237         "aic",
  238         aic_isa_methods, sizeof(struct aic_isa_softc),
  239 };
  240 
  241 extern devclass_t aic_devclass;
  242 
  243 MODULE_DEPEND(aic, cam, 1,1,1);
  244 DRIVER_MODULE(aic, isa, aic_isa_driver, aic_devclass, 0, 0);
  245 ISA_PNP_INFO(aic_ids);

Cache object: 6dd168c41de3364fa4f0fbc893f74f97


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