FreeBSD/Linux Kernel Cross Reference
sys/dev/mca/aha_mca.c

     /*      $NetBSD: aha_mca.c,v 1.10 2002/10/02 16:34:06 thorpej Exp $     */
     
     /*
      * Copyright (c) 2000-2002 The NetBSD Foundation, Inc.
      * Copyright (c) 1996-1999 Scott D. Telford.
      * Copyright (c) 1994, 1996 Charles M. Hannum.  All rights reserved.
      * Portions:
      *
      * 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.
     *
     * 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.
     */
    
    /*
     * Originally written by Julian Elischer (julian@tfs.com)
     * for TRW Financial Systems for use under the MACH(2.5) operating system.
     *
     * TRW Financial Systems, in accordance with their agreement with Carnegie
     * Mellon University, makes this software available to CMU to distribute
     * or use in any manner that they see fit as long as this message is kept with
     * the software. For this reason TFS also grants any other persons or
     * organisations permission to use or modify this software.
     *
     * TFS supplies this software to be publicly redistributed
     * on the understanding that TFS is not responsible for the correct
     * functioning of this software in any circumstances.
     */
    
    /*
     * AHA-1640 MCA bus code by Scott Telford
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: aha_mca.c,v 1.10 2002/10/02 16:34:06 thorpej Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/device.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/isa/isadmavar.h>
    
    #include <dev/ic/ahareg.h>
    #include <dev/ic/ahavar.h>
    
    #include <dev/mca/mcareg.h>
    #include <dev/mca/mcavar.h>
    #include <dev/mca/mcadevs.h>
    
    #define AHA_ISA_IOSIZE  4
    
    int     aha_mca_probe __P((struct device *, struct cfdata *, void *));
    void    aha_mca_attach __P((struct device *, struct device *, void *));
    
    CFATTACH_DECL(aha_mca, sizeof(struct aha_softc),
        aha_mca_probe, aha_mca_attach, NULL, NULL);
    
    int
    aha_mca_probe(parent, match, aux)
            struct device *parent;
            struct cfdata *match;
            void *aux;
    {
            register struct mca_attach_args *ma = aux;
    
            if (ma->ma_id == MCA_PRODUCT_AHA1640)
                    return (1);
    
            return (0);
    }
    
   
   void
   aha_mca_attach(parent, self, aux)
           struct device *parent, *self;
           void *aux;
   {
           struct mca_attach_args *ma = aux;
           struct aha_softc *sc = (void *)self;
           bus_space_tag_t iot = ma->ma_iot;
           bus_space_handle_t ioh;
           struct aha_probe_data apd;
           mca_chipset_tag_t mc = ma->ma_mc;
           bus_addr_t iobase;
   
           /*
            * POS registers differ much between 8003 and 8013, so they are
            * divided to two sections.
            * 
            * POS register 2: (adf pos0)
            * 7 6 5 4 3 2 1 0
            * | 0 0 0 0 0 0 \__ enable: 0=adapter disabled, 1=adapter enabled
            *  \_______________ Adapter BIOS location
            *
            * POS register 3: (adf pos1)
            * 7 6 5 4 3 2 1 0
            * \_/ \___/ \___/
            *  |    |       \__ I/O Port Address (upper part) 
            *  |    |__________ Adapter BIOS location
            *  |_______________ I/O Port Address (lower part)
            *
            * POS register 4: (adf pos2)
            * 7 6 5 4 3 2 1 0
            * \___/ | | \___/
            *   |   | |     \__ IRQ: XXX+8
            *   |   | |________ Sync xfer started by AHA-1640: 1=YES 2=NO
            *   |   |__________ SCSI Parity Checking On/Off
            *   |______________ SCSI Address
            * 
            * POS register 3: (adf pos3)
            * 7 6 5 4 3 2 1 0
            *       | \_____/
            *       |       \__ Arbitration lvl (DMA channel)
            *       |__________ Fairness On/Off
            *
            */
   
           apd.sc_irq = (ma->ma_pos[4] & 0x7) + 8;
           apd.sc_drq = ma->ma_pos[5] & 0xf;
           apd.sc_scsi_dev = (ma->ma_pos[4] & 0xe0) >> 5;
   
           printf(" slot %d irq %d drq %d: Adaptec AHA-1640 SCSI Adapter\n",
                   ma->ma_slot + 1,
                   apd.sc_irq, apd.sc_drq);
   
           iobase = ((ma->ma_pos[3] & 0x03) << 8) + 0x30 +
                    ((ma->ma_pos[3] & 0x40) >> 4);
   
           if (bus_space_map(iot, iobase, AHA_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;
           sc->sc_dmat = ma->ma_dmat;
   
           /*
            * AHA1640 is bus-mastering card, does not need any assistance
            * with DMA transfers by MCA DMA controller.
            */
   
           sc->sc_ih = mca_intr_establish(mc, apd.sc_irq, IPL_BIO, aha_intr, sc);
           if (sc->sc_ih == NULL) {
                   printf("%s: couldn't establish interrupt\n",
                       sc->sc_dev.dv_xname);
                   return;
           }
   
           aha_attach(sc, &apd);
   }

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