FreeBSD/Linux Kernel Cross Reference
sys/dev/isa/aic_isa.c

     /*      $NetBSD: aic_isa.c,v 1.13 2002/10/02 03:10:45 thorpej Exp $     */
     
     /*
      * Copyright (c) 1994, 1995, 1996 Charles M. Hannum.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Charles M. Hannum.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * Copyright (c) 1994 Jarle Greipsland
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
     * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    /*
     * Acknowledgements: Many of the algorithms used in this driver are
     * inspired by the work of Julian Elischer (julian@tfs.com) and
     * Charles Hannum (mycroft@duality.gnu.ai.mit.edu).  Thanks a million!
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: aic_isa.c,v 1.13 2002/10/02 03:10:45 thorpej Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/errno.h>
    #include <sys/ioctl.h>
    #include <sys/device.h>
    #include <sys/buf.h>
    #include <sys/proc.h>
    #include <sys/user.h>
    #include <sys/queue.h>
    
    #include <machine/bus.h>
    #include <machine/intr.h>
    
    #include <dev/scsipi/scsi_all.h>
    #include <dev/scsipi/scsipi_all.h>
    #include <dev/scsipi/scsiconf.h>
    
    #include <dev/isa/isavar.h>
    
    #include <dev/ic/aic6360reg.h>
    #include <dev/ic/aic6360var.h>
    
    int     aic_isa_probe __P((struct device *, struct cfdata *, void *));
    
    struct aic_isa_softc {
            struct  aic_softc sc_aic;       /* real "aic" softc */
    
            /* ISA-specific goo. */
            void    *sc_ih;                 /* interrupt handler */
    };
    
    CFATTACH_DECL(aic_isa, sizeof(struct aic_isa_softc),
        aic_isa_probe, aic_isa_attach, NULL, NULL);
    
    
    /*
     * INITIALIZATION ROUTINES (probe, attach ++)
     */
    
    /*
     * aic_isa_probe: probe for AIC6360 SCSI-controller
     * returns non-zero value if a controller is found.
     */
   int
   aic_isa_probe(parent, match, aux)
           struct device *parent;
           struct cfdata *match;
           void *aux;
   {
           struct isa_attach_args *ia = aux;
           bus_space_tag_t iot = ia->ia_iot;
           bus_space_handle_t ioh;
           int rv;
   
           if (ia->ia_nio < 1)
                   return (0);
           if (ia->ia_nirq < 1)
                   return (0);
   
           if (ISA_DIRECT_CONFIG(ia))
                   return (0);
   
           /* Disallow wildcarded i/o address. */
           if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT)
                   return (0);
   
           /* Disallow wildcarded IRQ. */
           if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT)
                   return (0);
   
           if (bus_space_map(iot, ia->ia_io[0].ir_addr, AIC_ISA_IOSIZE, 0, &ioh))
                   return (0);
   
           AIC_TRACE(("aic_isa_probe: port 0x%x\n", ia->ia_iobase));
           rv = aic_find(iot, ioh);
   
           bus_space_unmap(iot, ioh, AIC_ISA_IOSIZE);
   
           if (rv) {
                   ia->ia_nio = 1;
                   ia->ia_io[0].ir_size = AIC_ISA_IOSIZE;
   
                   ia->ia_nirq = 1;
   
                   ia->ia_niomem = 0;
                   ia->ia_ndrq = 0;
           }
           return rv;
   }
   
   void
   aic_isa_attach(parent, self, aux)
           struct device *parent, *self;
           void *aux;
   {
           struct isa_attach_args *ia = aux;
           struct aic_isa_softc *isc = (void *)self;
           struct aic_softc *sc = &isc->sc_aic;
           bus_space_tag_t iot = ia->ia_iot;
           bus_space_handle_t ioh;
           isa_chipset_tag_t ic = ia->ia_ic;
   
           printf("\n");
   
           if (bus_space_map(iot, ia->ia_io[0].ir_addr, AIC_ISA_IOSIZE, 0, &ioh)) {
                   printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
                   return;
           }
   
           sc->sc_iot = iot;
           sc->sc_ioh = ioh;
           AIC_TRACE(("aic_isa_attach: port 0x%x\n", ia->ia_iobase));
           if (!aic_find(iot, ioh)) {
                   printf("%s: aic_find failed", sc->sc_dev.dv_xname);
                   return;
           }
   
           isc->sc_ih = isa_intr_establish(ic, ia->ia_irq[0].ir_irq, IST_EDGE,
               IPL_BIO, aicintr, sc);
           if (isc->sc_ih == NULL) {
                   printf("%s: couldn't establish interrupt\n",
                       sc->sc_dev.dv_xname);
                   return;
           }
   
           aicattach(sc);
   }

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