FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/bs/bs_isa.c

     /*      $NecBSD: bs_isa.c,v 1.3 1997/10/31 17:43:35 honda Exp $ */
     /*      $NetBSD$        */
     /*
      * [NetBSD for NEC PC98 series]
      *  Copyright (c) 1995, 1996 NetBSD/pc98 porting staff.
      *  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.
     */
    
    #include <i386/Cbus/dev/bs/bsif.h>
    
    static int bs_isa_probe __P((struct device *, void *, void *));
    static void bs_isa_attach __P((struct device *, struct device *, void *));
    static void bs_args_copy 
            __P((struct bs_softc *, struct isa_attach_args *, struct bshw *));
    
    struct cfattach bs_isa_ca = {
            sizeof(struct bs_softc), bs_isa_probe, bs_isa_attach
    };
    
    static void
    bs_args_copy(bsc, ia, hw)
            struct bs_softc *bsc;
            struct isa_attach_args *ia;
            struct bshw *hw;
    {
            
            bsc->sc_hw = hw;
            bsc->sc_iot = ia->ia_iot;
            bsc->sc_memt = ia->ia_memt;
            bsc->sc_dmat = ia->ia_dmat;
            bsc->sc_delaybah = ia->ia_delaybah;             /* should be die */
            bsc->sc_iobase = ia->ia_iobase;
            if (ia->ia_maddr != MADDRUNK)
                    bsc->sm_offset = BSHW_SMITFIFO_OFFSET;
            else
                    bsc->sm_offset = 0;
    
            bsc->sc_cfgflags = DVCFG_MINOR(ia->ia_cfgflags);
            strcpy(bsc->sc_dvname, bsc->sc_dev.dv_xname);
    }
    
    static int
    bs_isa_probe(parent, match, aux)
            struct device *parent;
            void *match, *aux;
    {
            struct bs_softc *bsc = (void *) match;
            struct isa_attach_args *ia = aux;
            bus_space_handle_t ioh, memh = NULL;
            bus_space_tag_t iot, memt;
            struct bshw *hw;
            u_int irq, drq;
            int rv = 0;
    
            hw = DVCFG_HW(&bshw_hwsel, DVCFG_MAJOR(ia->ia_cfgflags));
            if (hw == NULL)
                    return rv;
    
            iot = ia->ia_iot;
            memt = ia->ia_memt;
            if (ia->ia_iobase == IOBASEUNK)
            {
                    printf("%s: iobase not specified. Assume default port(0x%x)\n",
                            bsc->sc_dvname, BSHW_DEFAULT_PORT);
                    ia->ia_iobase = BSHW_DEFAULT_PORT;
            }
    
            if (bus_space_map(iot, ia->ia_iobase, BSHW_IOSZ, 0, &ioh))
                    return rv;
    
            if ((hw->hw_flags & BSHW_SMFIFO) != 0 && (ia->ia_maddr != MADDRUNK))
            {
                    ia->ia_maddr = (ia->ia_maddr & (~((NBPG * 2) - 1))) + NBPG;
                    ia->ia_msize = NBPG;
                    if (bus_space_map(memt, ia->ia_maddr, NBPG, 0, &memh))
                    {
                           bus_space_unmap(iot, ioh, BSHW_IOSZ);
                           return 0;
                   }
           }
           else
                   ia->ia_maddr = MADDRUNK;
   
           irq = IRQUNK;
           drq = DRQUNK;
           bsc->sc_ioh = ioh;
           bsc->sc_memh = memh;
           bs_args_copy(bsc, ia, hw);
           if (bshw_board_probe(bsc, &drq, &irq))
                   goto bad;
   
           ia->ia_irq = irq;
           ia->ia_drq = drq;
           ia->ia_iosize = BSHW_IOSZ;
           rv = 1;
   
   bad:
           bus_space_unmap(iot, bsc->sc_ioh, BSHW_IOSZ);
           if (ia->ia_maddr != MADDRUNK)
                   bus_space_unmap(memt, bsc->sc_memh, ia->ia_msize);
           return rv;
   }
   
   static void
   bs_isa_attach(parent, self, aux)
           struct device *parent, *self;
           void *aux;
   {
           extern struct scsi_adapter pc98texa55bs;
           extern struct scsi_device bs_dev;
           struct bs_softc *bsc = (void *) self;
           struct isa_attach_args *ia = aux;
           bus_space_tag_t iot, memt;
           struct bshw *hw;
           int i;
   
           printf("\n");
   
           hw = DVCFG_HW(&bshw_hwsel, DVCFG_MAJOR(ia->ia_cfgflags));
           iot = ia->ia_iot;
           memt = ia->ia_memt;
   
           if (bus_space_map(iot, ia->ia_iobase, BSHW_IOSZ, 0, &bsc->sc_ioh))
                   panic("%s: bus io map failed\n", bsc->sc_dev.dv_xname);
           
           if (ia->ia_maddr != MADDRUNK &&
               bus_space_map(memt, ia->ia_maddr, NBPG, 0, &bsc->sc_memh))
                   panic("%s: bus mem map failed\n", bsc->sc_dev.dv_xname);
   
           if (isa_dmamap_create(NULL, ia->ia_drq, MAXBSIZE, BUS_DMA_NOWAIT))
           {
                   printf("%s: can't set up ISA DMA map\n", bsc->sc_dev.dv_xname);
                   return;
           }
   
           /* system initialize */
           bs_args_copy(bsc, ia, hw);
           bs_hostque_init(bsc);
           for (i = 0; i < NTARGETS; i++)
           {
                   if (i != bsc->sc_hostid)
                           bs_init_target_info(bsc, i);
           }
   
           bs_init_ccbque(BS_MAX_CCB);
           bsc->sc_hstate = BSC_BOOTUP;
           bsc->sc_retry = RETRIES;
           bsc->sc_wc = delaycount * 250;
           bs_reset_nexus(bsc);
   
           /* link upper layer */
           bsc->sc_link.adapter_target = bsc->sc_hostid;
           bsc->sc_link.openings = XSMAX;
           bsc->sc_link.max_target = 7;
           bsc->sc_link.channel = SCSI_CHANNEL_ONLY_ONE;
           bsc->sc_link.adapter_softc = bsc;
           bsc->sc_link.adapter = &pc98texa55bs;
           bsc->sc_link.device = &bs_dev;
   
           config_found(self, &bsc->sc_link, bsprint);
   
           bsc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
                                           IPL_BIO, bsintr, bsc);
           bs_start_timeout(bsc);
   }

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