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: releng/9.1/sys/dev/aic/aic_cbus.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[] = { 0x1840 };
   57 #define AIC_ISA_NUMPORTS (sizeof(aic_isa_ports) / sizeof(aic_isa_ports[0]))
   58 #define AIC_ISA_PORTSIZE 0x20
   59 
   60 #define AIC98_GENERIC           0x00
   61 #define AIC98_NEC100            0x01
   62 #define AIC_TYPE98(x)           (((x) >> 16) & 0x01)
   63 
   64 static bus_addr_t aicport_generic[AIC_ISA_PORTSIZE] = {
   65         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
   66         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
   67         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
   68         0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
   69 };
   70 static bus_addr_t aicport_100[AIC_ISA_PORTSIZE] = {
   71         0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
   72         0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
   73         0x20, 0x22, 0x24, 0x26, 0x28, 0x2a, 0x2c, 0x2e,
   74         0x30, 0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e,
   75 };
   76 
   77 static struct isa_pnp_id aic_ids[] = {
   78         { 0xa180a3b8, "NEC PC9801-100" },
   79         { 0 }
   80 };
   81 
   82 static int
   83 aic_isa_alloc_resources(device_t dev)
   84 {
   85         struct aic_isa_softc *sc = device_get_softc(dev);
   86         int rid;
   87         bus_addr_t *bs_iat;
   88 
   89         if ((isa_get_logicalid(dev) == 0xa180a3b8) ||
   90             (AIC_TYPE98(device_get_flags(dev)) == AIC98_NEC100))
   91                 bs_iat = aicport_100;
   92         else
   93                 bs_iat = aicport_generic;
   94 
   95         sc->sc_port = sc->sc_irq = sc->sc_drq = 0;
   96 
   97         rid = 0;
   98         sc->sc_port = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid,
   99                                           bs_iat, AIC_ISA_PORTSIZE, RF_ACTIVE);
  100         if (!sc->sc_port) {
  101                 device_printf(dev, "I/O port allocation failed\n");
  102                 return (ENOMEM);
  103         }
  104         isa_load_resourcev(sc->sc_port, bs_iat, AIC_ISA_PORTSIZE);
  105 
  106         if (isa_get_irq(dev) != -1) {
  107                 rid = 0;
  108                 sc->sc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
  109                                                     RF_ACTIVE);
  110                 if (!sc->sc_irq) {
  111                         device_printf(dev, "IRQ allocation failed\n");
  112                         aic_isa_release_resources(dev);
  113                         return (ENOMEM);
  114                 }
  115         }
  116 
  117         if (isa_get_drq(dev) != -1) {
  118                 rid = 0;
  119                 sc->sc_drq = bus_alloc_resource_any(dev, SYS_RES_DRQ, &rid,
  120                                                     RF_ACTIVE);
  121                 if (!sc->sc_drq) {
  122                         device_printf(dev, "DRQ allocation failed\n");
  123                         aic_isa_release_resources(dev);
  124                         return (ENOMEM);
  125                 }
  126         }
  127 
  128         sc->sc_aic.dev = dev;
  129         sc->sc_aic.unit = device_get_unit(dev);
  130         sc->sc_aic.tag = rman_get_bustag(sc->sc_port);
  131         sc->sc_aic.bsh = rman_get_bushandle(sc->sc_port);
  132         return (0);
  133 }
  134 
  135 static void
  136 aic_isa_release_resources(device_t dev)
  137 {
  138         struct aic_isa_softc *sc = device_get_softc(dev);
  139 
  140         if (sc->sc_port)
  141                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->sc_port);
  142         if (sc->sc_irq)
  143                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
  144         if (sc->sc_drq)
  145                 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->sc_drq);
  146         sc->sc_port = sc->sc_irq = sc->sc_drq = 0;
  147 }
  148 
  149 static int
  150 aic_isa_probe(device_t dev)
  151 {
  152         struct aic_isa_softc *sc = device_get_softc(dev);
  153         struct aic_softc *aic = &sc->sc_aic;
  154         int numports, i;
  155         u_int port, *ports;
  156         u_int8_t porta;
  157 
  158         if (ISA_PNP_PROBE(device_get_parent(dev), dev, aic_ids) == ENXIO)
  159                 return (ENXIO);
  160 
  161         port = isa_get_port(dev);
  162         if (port != -1) {
  163                 ports = &port;
  164                 numports = 1;
  165         } else {
  166                 ports = aic_isa_ports;
  167                 numports = AIC_ISA_NUMPORTS;
  168         }
  169 
  170         for (i = 0; i < numports; i++) {
  171                 if (bus_set_resource(dev, SYS_RES_IOPORT, 0, ports[i], 1))
  172                         continue;
  173                 if (aic_isa_alloc_resources(dev))
  174                         continue;
  175                 if (!aic_probe(aic)) {
  176                         aic_isa_release_resources(dev);
  177                         break;
  178                 }
  179                 aic_isa_release_resources(dev);
  180         }
  181 
  182         if (i == numports)
  183                 return (ENXIO);
  184 
  185         porta = aic_inb(aic, PORTA);
  186         if (isa_get_irq(dev) == -1)
  187                 bus_set_resource(dev, SYS_RES_IRQ, 0, PORTA_IRQ(porta), 1);
  188         if ((aic->flags & AIC_DMA_ENABLE) && isa_get_drq(dev) == -1)
  189                 bus_set_resource(dev, SYS_RES_DRQ, 0, PORTA_DRQ(porta), 1);
  190         device_set_desc(dev, "Adaptec 6260/6360 SCSI controller");
  191         return (0);
  192 }
  193 
  194 static int
  195 aic_isa_attach(device_t dev)
  196 {
  197         struct aic_isa_softc *sc = device_get_softc(dev);
  198         struct aic_softc *aic = &sc->sc_aic;
  199         int error;
  200 
  201         error = aic_isa_alloc_resources(dev);
  202         if (error) {
  203                 device_printf(dev, "resource allocation failed\n");
  204                 return (error);
  205         }
  206 
  207         error = aic_attach(aic);
  208         if (error) {
  209                 device_printf(dev, "attach failed\n");
  210                 aic_isa_release_resources(dev);
  211                 return (error);
  212         }
  213 
  214         error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_CAM|INTR_ENTROPY,
  215                                 NULL, aic_intr, aic, &sc->sc_ih);
  216         if (error) {
  217                 device_printf(dev, "failed to register interrupt handler\n");
  218                 aic_isa_release_resources(dev);
  219                 return (error);
  220         }
  221         return (0);
  222 }
  223 
  224 static int
  225 aic_isa_detach(device_t dev)
  226 {
  227         struct aic_isa_softc *sc = device_get_softc(dev);
  228         struct aic_softc *aic = &sc->sc_aic;
  229         int error;
  230 
  231         error = aic_detach(aic);
  232         if (error) {
  233                 device_printf(dev, "detach failed\n");
  234                 return (error);
  235         }
  236 
  237         error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
  238         if (error) {
  239                 device_printf(dev, "failed to unregister interrupt handler\n");
  240         }
  241 
  242         aic_isa_release_resources(dev);
  243         return (0);
  244 }
  245 
  246 static device_method_t aic_isa_methods[] = {
  247         /* Device interface */
  248         DEVMETHOD(device_probe,         aic_isa_probe),
  249         DEVMETHOD(device_attach,        aic_isa_attach),
  250         DEVMETHOD(device_detach,        aic_isa_detach),
  251         { 0, 0 }
  252 };
  253 
  254 static driver_t aic_isa_driver = {
  255         "aic",
  256         aic_isa_methods, sizeof(struct aic_isa_softc),
  257 };
  258 
  259 extern devclass_t aic_devclass;
  260 
  261 MODULE_DEPEND(aic, cam, 1,1,1);
  262 DRIVER_MODULE(aic, isa, aic_isa_driver, aic_devclass, 0, 0);

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