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/6.4/sys/dev/aic/aic_cbus.c 145009 2005-04-13 13:02:58Z 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[] = { 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.unit = device_get_unit(dev);
  129         sc->sc_aic.tag = rman_get_bustag(sc->sc_port);
  130         sc->sc_aic.bsh = rman_get_bushandle(sc->sc_port);
  131         return (0);
  132 }
  133 
  134 static void
  135 aic_isa_release_resources(device_t dev)
  136 {
  137         struct aic_isa_softc *sc = device_get_softc(dev);
  138 
  139         if (sc->sc_port)
  140                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->sc_port);
  141         if (sc->sc_irq)
  142                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
  143         if (sc->sc_drq)
  144                 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->sc_drq);
  145         sc->sc_port = sc->sc_irq = sc->sc_drq = 0;
  146 }
  147 
  148 static int
  149 aic_isa_probe(device_t dev)
  150 {
  151         struct aic_isa_softc *sc = device_get_softc(dev);
  152         struct aic_softc *aic = &sc->sc_aic;
  153         int numports, i;
  154         u_int port, *ports;
  155         u_int8_t porta;
  156 
  157         if (ISA_PNP_PROBE(device_get_parent(dev), dev, aic_ids) == ENXIO)
  158                 return (ENXIO);
  159 
  160         port = isa_get_port(dev);
  161         if (port != -1) {
  162                 ports = &port;
  163                 numports = 1;
  164         } else {
  165                 ports = aic_isa_ports;
  166                 numports = AIC_ISA_NUMPORTS;
  167         }
  168 
  169         for (i = 0; i < numports; i++) {
  170                 if (bus_set_resource(dev, SYS_RES_IOPORT, 0, ports[i], 1))
  171                         continue;
  172                 if (aic_isa_alloc_resources(dev))
  173                         continue;
  174                 if (!aic_probe(aic)) {
  175                         aic_isa_release_resources(dev);
  176                         break;
  177                 }
  178                 aic_isa_release_resources(dev);
  179         }
  180 
  181         if (i == numports)
  182                 return (ENXIO);
  183 
  184         porta = aic_inb(aic, PORTA);
  185         if (isa_get_irq(dev) == -1)
  186                 bus_set_resource(dev, SYS_RES_IRQ, 0, PORTA_IRQ(porta), 1);
  187         if ((aic->flags & AIC_DMA_ENABLE) && isa_get_drq(dev) == -1)
  188                 bus_set_resource(dev, SYS_RES_DRQ, 0, PORTA_DRQ(porta), 1);
  189         device_set_desc(dev, "Adaptec 6260/6360 SCSI controller");
  190         return (0);
  191 }
  192 
  193 static int
  194 aic_isa_attach(device_t dev)
  195 {
  196         struct aic_isa_softc *sc = device_get_softc(dev);
  197         struct aic_softc *aic = &sc->sc_aic;
  198         int error;
  199 
  200         error = aic_isa_alloc_resources(dev);
  201         if (error) {
  202                 device_printf(dev, "resource allocation failed\n");
  203                 return (error);
  204         }
  205 
  206         error = aic_attach(aic);
  207         if (error) {
  208                 device_printf(dev, "attach failed\n");
  209                 aic_isa_release_resources(dev);
  210                 return (error);
  211         }
  212 
  213         error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_CAM|INTR_ENTROPY,
  214                                 aic_intr, aic, &sc->sc_ih);
  215         if (error) {
  216                 device_printf(dev, "failed to register interrupt handler\n");
  217                 aic_isa_release_resources(dev);
  218                 return (error);
  219         }
  220         return (0);
  221 }
  222 
  223 static int
  224 aic_isa_detach(device_t dev)
  225 {
  226         struct aic_isa_softc *sc = device_get_softc(dev);
  227         struct aic_softc *aic = &sc->sc_aic;
  228         int error;
  229 
  230         error = aic_detach(aic);
  231         if (error) {
  232                 device_printf(dev, "detach failed\n");
  233                 return (error);
  234         }
  235 
  236         error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
  237         if (error) {
  238                 device_printf(dev, "failed to unregister interrupt handler\n");
  239         }
  240 
  241         aic_isa_release_resources(dev);
  242         return (0);
  243 }
  244 
  245 static device_method_t aic_isa_methods[] = {
  246         /* Device interface */
  247         DEVMETHOD(device_probe,         aic_isa_probe),
  248         DEVMETHOD(device_attach,        aic_isa_attach),
  249         DEVMETHOD(device_detach,        aic_isa_detach),
  250         { 0, 0 }
  251 };
  252 
  253 static driver_t aic_isa_driver = {
  254         "aic",
  255         aic_isa_methods, sizeof(struct aic_isa_softc),
  256 };
  257 
  258 extern devclass_t aic_devclass;
  259 
  260 MODULE_DEPEND(aic, cam, 1,1,1);
  261 DRIVER_MODULE(aic, isa, aic_isa_driver, aic_devclass, 0, 0);

Cache object: 68dbf27ae568a601a1a297e7e29eb569


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