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_cbus.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: stable/11/sys/dev/aic/aic_cbus.c 298431 2016-04-21 19:40:10Z pfg $");
   29 
   30 #include <sys/param.h>
   31 #include <sys/callout.h>
   32 #include <sys/kernel.h>
   33 #include <sys/lock.h>
   34 #include <sys/module.h>
   35 #include <sys/mutex.h>
   36 #include <sys/bus.h>
   37 
   38 #include <machine/bus.h>
   39 #include <machine/resource.h>
   40 #include <sys/rman.h>
   41  
   42 #include <isa/isavar.h>
   43 #include <dev/aic/aic6360reg.h>
   44 #include <dev/aic/aicvar.h>
   45   
   46 struct aic_isa_softc {
   47         struct  aic_softc sc_aic;
   48         struct  resource *sc_port;
   49         struct  resource *sc_irq;
   50         struct  resource *sc_drq;
   51         void    *sc_ih;
   52 };
   53 
   54 static int aic_isa_alloc_resources(device_t);
   55 static void aic_isa_release_resources(device_t);
   56 static int aic_isa_probe(device_t);
   57 static int aic_isa_attach(device_t);
   58 
   59 static u_int aic_isa_ports[] = { 0x1840 };
   60 
   61 #define AIC_ISA_NUMPORTS nitems(aic_isa_ports)
   62 #define AIC_ISA_PORTSIZE 0x20
   63 
   64 #define AIC98_GENERIC           0x00
   65 #define AIC98_NEC100            0x01
   66 #define AIC_TYPE98(x)           (((x) >> 16) & 0x01)
   67 
   68 static bus_addr_t aicport_generic[AIC_ISA_PORTSIZE] = {
   69         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
   70         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
   71         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
   72         0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
   73 };
   74 static bus_addr_t aicport_100[AIC_ISA_PORTSIZE] = {
   75         0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
   76         0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
   77         0x20, 0x22, 0x24, 0x26, 0x28, 0x2a, 0x2c, 0x2e,
   78         0x30, 0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e,
   79 };
   80 
   81 static struct isa_pnp_id aic_ids[] = {
   82         { 0xa180a3b8, "NEC PC9801-100" },
   83         { 0 }
   84 };
   85 
   86 static int
   87 aic_isa_alloc_resources(device_t dev)
   88 {
   89         struct aic_isa_softc *sc = device_get_softc(dev);
   90         int rid;
   91         bus_addr_t *bs_iat;
   92 
   93         if ((isa_get_logicalid(dev) == 0xa180a3b8) ||
   94             (AIC_TYPE98(device_get_flags(dev)) == AIC98_NEC100))
   95                 bs_iat = aicport_100;
   96         else
   97                 bs_iat = aicport_generic;
   98 
   99         sc->sc_port = sc->sc_irq = sc->sc_drq = NULL;
  100 
  101         rid = 0;
  102         sc->sc_port = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid,
  103                                           bs_iat, AIC_ISA_PORTSIZE, RF_ACTIVE);
  104         if (!sc->sc_port) {
  105                 device_printf(dev, "I/O port allocation failed\n");
  106                 return (ENOMEM);
  107         }
  108         isa_load_resourcev(sc->sc_port, bs_iat, AIC_ISA_PORTSIZE);
  109         mtx_init(&sc->sc_aic.lock, "aic", NULL, MTX_DEF);
  110 
  111         if (isa_get_irq(dev) != -1) {
  112                 rid = 0;
  113                 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
  114                                                     RF_ACTIVE);
  115                 if (!sc->sc_irq) {
  116                         device_printf(dev, "IRQ allocation failed\n");
  117                         aic_isa_release_resources(dev);
  118                         return (ENOMEM);
  119                 }
  120         }
  121 
  122         if (isa_get_drq(dev) != -1) {
  123                 rid = 0;
  124                 sc->sc_drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &rid,
  125                                                     RF_ACTIVE);
  126                 if (!sc->sc_drq) {
  127                         device_printf(dev, "DRQ allocation failed\n");
  128                         aic_isa_release_resources(dev);
  129                         return (ENOMEM);
  130                 }
  131         }
  132 
  133         sc->sc_aic.dev = dev;
  134         sc->sc_aic.res = sc->sc_port;
  135         return (0);
  136 }
  137 
  138 static void
  139 aic_isa_release_resources(device_t dev)
  140 {
  141         struct aic_isa_softc *sc = device_get_softc(dev);
  142 
  143         if (sc->sc_port)
  144                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->sc_port);
  145         if (sc->sc_irq)
  146                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
  147         if (sc->sc_drq)
  148                 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->sc_drq);
  149         sc->sc_port = sc->sc_irq = sc->sc_drq = NULL;
  150         mtx_destroy(&sc->sc_aic.lock);
  151 }
  152 
  153 static int
  154 aic_isa_probe(device_t dev)
  155 {
  156         struct aic_isa_softc *sc = device_get_softc(dev);
  157         struct aic_softc *aic = &sc->sc_aic;
  158         int numports, i;
  159         u_int port, *ports;
  160         u_int8_t porta;
  161 
  162         if (ISA_PNP_PROBE(device_get_parent(dev), dev, aic_ids) == ENXIO)
  163                 return (ENXIO);
  164 
  165         port = isa_get_port(dev);
  166         if (port != -1) {
  167                 ports = &port;
  168                 numports = 1;
  169         } else {
  170                 ports = aic_isa_ports;
  171                 numports = AIC_ISA_NUMPORTS;
  172         }
  173 
  174         for (i = 0; i < numports; i++) {
  175                 if (bus_set_resource(dev, SYS_RES_IOPORT, 0, ports[i], 1))
  176                         continue;
  177                 if (aic_isa_alloc_resources(dev))
  178                         continue;
  179                 if (aic_probe(aic) == 0)
  180                         break;
  181                 aic_isa_release_resources(dev);
  182         }
  183 
  184         if (i == numports)
  185                 return (ENXIO);
  186 
  187         porta = aic_inb(aic, PORTA);
  188         aic_isa_release_resources(dev);
  189         if (isa_get_irq(dev) == -1)
  190                 bus_set_resource(dev, SYS_RES_IRQ, 0, PORTA_IRQ(porta), 1);
  191         if ((aic->flags & AIC_DMA_ENABLE) && isa_get_drq(dev) == -1)
  192                 bus_set_resource(dev, SYS_RES_DRQ, 0, PORTA_DRQ(porta), 1);
  193         device_set_desc(dev, "Adaptec 6260/6360 SCSI controller");
  194         return (0);
  195 }
  196 
  197 static int
  198 aic_isa_attach(device_t dev)
  199 {
  200         struct aic_isa_softc *sc = device_get_softc(dev);
  201         struct aic_softc *aic = &sc->sc_aic;
  202         int error;
  203 
  204         error = aic_isa_alloc_resources(dev);
  205         if (error) {
  206                 device_printf(dev, "resource allocation failed\n");
  207                 return (error);
  208         }
  209 
  210         error = aic_attach(aic);
  211         if (error) {
  212                 device_printf(dev, "attach failed\n");
  213                 aic_isa_release_resources(dev);
  214                 return (error);
  215         }
  216 
  217         error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_CAM | INTR_ENTROPY |
  218             INTR_MPSAFE, NULL, aic_intr, aic, &sc->sc_ih);
  219         if (error) {
  220                 device_printf(dev, "failed to register interrupt handler\n");
  221                 aic_isa_release_resources(dev);
  222                 return (error);
  223         }
  224         return (0);
  225 }
  226 
  227 static int
  228 aic_isa_detach(device_t dev)
  229 {
  230         struct aic_isa_softc *sc = device_get_softc(dev);
  231         struct aic_softc *aic = &sc->sc_aic;
  232         int error;
  233 
  234         error = aic_detach(aic);
  235         if (error) {
  236                 device_printf(dev, "detach failed\n");
  237                 return (error);
  238         }
  239 
  240         error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
  241         if (error) {
  242                 device_printf(dev, "failed to unregister interrupt handler\n");
  243         }
  244 
  245         aic_isa_release_resources(dev);
  246         return (0);
  247 }
  248 
  249 static device_method_t aic_isa_methods[] = {
  250         /* Device interface */
  251         DEVMETHOD(device_probe,         aic_isa_probe),
  252         DEVMETHOD(device_attach,        aic_isa_attach),
  253         DEVMETHOD(device_detach,        aic_isa_detach),
  254         { 0, 0 }
  255 };
  256 
  257 static driver_t aic_isa_driver = {
  258         "aic",
  259         aic_isa_methods, sizeof(struct aic_isa_softc),
  260 };
  261 
  262 extern devclass_t aic_devclass;
  263 
  264 MODULE_DEPEND(aic, cam, 1,1,1);
  265 DRIVER_MODULE(aic, isa, aic_isa_driver, aic_devclass, 0, 0);

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