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/5.2/sys/dev/aic/aic_cbus.c 119418 2003-08-24 17:55:58Z obrien $");
   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_pio.h>
   36 #include <machine/bus.h>
   37 #include <machine/resource.h>
   38 #include <sys/rman.h>
   39  
   40 #include <isa/isavar.h>
   41 #include <dev/aic/aic6360reg.h>
   42 #include <dev/aic/aicvar.h>
   43   
   44 struct aic_isa_softc {
   45         struct  aic_softc sc_aic;
   46         struct  resource *sc_port;
   47         struct  resource *sc_irq;
   48         struct  resource *sc_drq;
   49         void    *sc_ih;
   50 };
   51 
   52 static int aic_isa_alloc_resources(device_t);
   53 static void aic_isa_release_resources(device_t);
   54 static int aic_isa_probe(device_t);
   55 static int aic_isa_attach(device_t);
   56 
   57 #ifdef PC98
   58 static u_int aic_isa_ports[] = { 0x1840 };
   59 #else
   60 static u_int aic_isa_ports[] = { 0x340, 0x140 };
   61 #endif
   62 #define AIC_ISA_NUMPORTS (sizeof(aic_isa_ports) / sizeof(aic_isa_ports[0]))
   63 #define AIC_ISA_PORTSIZE 0x20
   64 
   65 #ifdef PC98
   66 #define AIC98_GENERIC           0x00
   67 #define AIC98_NEC100            0x01
   68 #define AIC_TYPE98(x)           (((x) >> 16) & 0x01)
   69 
   70 static bus_addr_t aicport_generic[AIC_ISA_PORTSIZE] = {
   71         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
   72         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
   73         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
   74         0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
   75 };
   76 static bus_addr_t aicport_100[AIC_ISA_PORTSIZE] = {
   77         0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e,
   78         0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e,
   79         0x20, 0x22, 0x24, 0x26, 0x28, 0x2a, 0x2c, 0x2e,
   80         0x30, 0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e,
   81 };
   82 #endif
   83 
   84 static struct isa_pnp_id aic_ids[] = {
   85         { 0xa180a3b8, "NEC PC9801-100" },
   86         { 0 }
   87 };
   88 
   89 static int
   90 aic_isa_alloc_resources(device_t dev)
   91 {
   92         struct aic_isa_softc *sc = device_get_softc(dev);
   93         int rid;
   94 #ifdef PC98
   95         bus_addr_t *bs_iat;
   96 
   97         if ((isa_get_logicalid(dev) == 0xa180a3b8) ||
   98             (AIC_TYPE98(device_get_flags(dev)) == AIC98_NEC100))
   99                 bs_iat = aicport_100;
  100         else
  101                 bs_iat = aicport_generic;
  102 #endif
  103 
  104         sc->sc_port = sc->sc_irq = sc->sc_drq = 0;
  105 
  106         rid = 0;
  107 #ifdef PC98
  108         sc->sc_port = isa_alloc_resourcev(dev, SYS_RES_IOPORT, &rid,
  109                                           bs_iat, AIC_ISA_PORTSIZE, RF_ACTIVE);
  110 #else
  111         sc->sc_port = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
  112                                         0ul, ~0ul, AIC_ISA_PORTSIZE, RF_ACTIVE);
  113 #endif
  114         if (!sc->sc_port) {
  115                 device_printf(dev, "I/O port allocation failed\n");
  116                 return (ENOMEM);
  117         }
  118 #ifdef PC98
  119         isa_load_resourcev(sc->sc_port, bs_iat, AIC_ISA_PORTSIZE);
  120 #endif
  121 
  122         if (isa_get_irq(dev) != -1) {
  123                 rid = 0;
  124                 sc->sc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
  125                                                 0ul, ~0ul, 1, RF_ACTIVE);
  126                 if (!sc->sc_irq) {
  127                         device_printf(dev, "IRQ allocation failed\n");
  128                         aic_isa_release_resources(dev);
  129                         return (ENOMEM);
  130                 }
  131         }
  132 
  133         if (isa_get_drq(dev) != -1) {
  134                 rid = 0;
  135                 sc->sc_drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid,
  136                                                 0ul, ~0ul, 1, RF_ACTIVE);
  137                 if (!sc->sc_drq) {
  138                         device_printf(dev, "DRQ allocation failed\n");
  139                         aic_isa_release_resources(dev);
  140                         return (ENOMEM);
  141                 }
  142         }
  143 
  144         sc->sc_aic.unit = device_get_unit(dev);
  145         sc->sc_aic.tag = rman_get_bustag(sc->sc_port);
  146         sc->sc_aic.bsh = rman_get_bushandle(sc->sc_port);
  147         return (0);
  148 }
  149 
  150 static void
  151 aic_isa_release_resources(device_t dev)
  152 {
  153         struct aic_isa_softc *sc = device_get_softc(dev);
  154 
  155         if (sc->sc_port)
  156                 bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->sc_port);
  157         if (sc->sc_irq)
  158                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq);
  159         if (sc->sc_drq)
  160                 bus_release_resource(dev, SYS_RES_DRQ, 0, sc->sc_drq);
  161         sc->sc_port = sc->sc_irq = sc->sc_drq = 0;
  162 }
  163 
  164 static int
  165 aic_isa_probe(device_t dev)
  166 {
  167         struct aic_isa_softc *sc = device_get_softc(dev);
  168         struct aic_softc *aic = &sc->sc_aic;
  169         int numports, i;
  170         u_int port, *ports;
  171         u_int8_t porta;
  172 
  173         if (ISA_PNP_PROBE(device_get_parent(dev), dev, aic_ids) == ENXIO)
  174                 return (ENXIO);
  175 
  176         port = isa_get_port(dev);
  177         if (port != -1) {
  178                 ports = &port;
  179                 numports = 1;
  180         } else {
  181                 ports = aic_isa_ports;
  182                 numports = AIC_ISA_NUMPORTS;
  183         }
  184 
  185         for (i = 0; i < numports; i++) {
  186 #ifdef PC98
  187                 if (bus_set_resource(dev, SYS_RES_IOPORT, 0, ports[i], 1))
  188                         continue;
  189 #else
  190                 if (bus_set_resource(dev, SYS_RES_IOPORT, 0, ports[i],
  191                                      AIC_ISA_PORTSIZE))
  192                         continue;
  193 #endif
  194                 if (aic_isa_alloc_resources(dev))
  195                         continue;
  196                 if (!aic_probe(aic)) {
  197                         aic_isa_release_resources(dev);
  198                         break;
  199                 }
  200                 aic_isa_release_resources(dev);
  201         }
  202 
  203         if (i == numports)
  204                 return (ENXIO);
  205 
  206         porta = aic_inb(aic, PORTA);
  207         if (isa_get_irq(dev) == -1)
  208                 bus_set_resource(dev, SYS_RES_IRQ, 0, PORTA_IRQ(porta), 1);
  209         if ((aic->flags & AIC_DMA_ENABLE) && isa_get_drq(dev) == -1)
  210                 bus_set_resource(dev, SYS_RES_DRQ, 0, PORTA_DRQ(porta), 1);
  211         device_set_desc(dev, "Adaptec 6260/6360 SCSI controller");
  212         return (0);
  213 }
  214 
  215 static int
  216 aic_isa_attach(device_t dev)
  217 {
  218         struct aic_isa_softc *sc = device_get_softc(dev);
  219         struct aic_softc *aic = &sc->sc_aic;
  220         int error;
  221 
  222         error = aic_isa_alloc_resources(dev);
  223         if (error) {
  224                 device_printf(dev, "resource allocation failed\n");
  225                 return (error);
  226         }
  227 
  228         error = aic_attach(aic);
  229         if (error) {
  230                 device_printf(dev, "attach failed\n");
  231                 aic_isa_release_resources(dev);
  232                 return (error);
  233         }
  234 
  235         error = bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_CAM|INTR_ENTROPY,
  236                                 aic_intr, aic, &sc->sc_ih);
  237         if (error) {
  238                 device_printf(dev, "failed to register interrupt handler\n");
  239                 aic_isa_release_resources(dev);
  240                 return (error);
  241         }
  242         return (0);
  243 }
  244 
  245 static int
  246 aic_isa_detach(device_t dev)
  247 {
  248         struct aic_isa_softc *sc = device_get_softc(dev);
  249         struct aic_softc *aic = &sc->sc_aic;
  250         int error;
  251 
  252         error = aic_detach(aic);
  253         if (error) {
  254                 device_printf(dev, "detach failed\n");
  255                 return (error);
  256         }
  257 
  258         error = bus_teardown_intr(dev, sc->sc_irq, sc->sc_ih);
  259         if (error) {
  260                 device_printf(dev, "failed to unregister interrupt handler\n");
  261         }
  262 
  263         aic_isa_release_resources(dev);
  264         return (0);
  265 }
  266 
  267 static device_method_t aic_isa_methods[] = {
  268         /* Device interface */
  269         DEVMETHOD(device_probe,         aic_isa_probe),
  270         DEVMETHOD(device_attach,        aic_isa_attach),
  271         DEVMETHOD(device_detach,        aic_isa_detach),
  272         { 0, 0 }
  273 };
  274 
  275 static driver_t aic_isa_driver = {
  276         "aic",
  277         aic_isa_methods, sizeof(struct aic_isa_softc),
  278 };
  279 
  280 extern devclass_t aic_devclass;
  281 
  282 MODULE_DEPEND(aic, cam, 1,1,1);
  283 DRIVER_MODULE(aic, isa, aic_isa_driver, aic_devclass, 0, 0);

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