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aha_mca.c revision 1.6 
      1 /*	$NetBSD: aha_mca.c,v 1.6 2001/11/22 20:25:58 jdolecek Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * Copyright (c) 1996-1999 Scott D. Telford.
      6  * Copyright (c) 1994, 1996 Charles M. Hannum.  All rights reserved.
      7  * Portions:
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed by Charles M. Hannum.
     20  * 4. The name of the author may not be used to endorse or promote products
     21  *    derived from this software without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     25  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     26  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     27  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     28  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     29  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     30  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     31  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     32  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 /*
     36  * Originally written by Julian Elischer (julian (at) tfs.com)
     37  * for TRW Financial Systems for use under the MACH(2.5) operating system.
     38  *
     39  * TRW Financial Systems, in accordance with their agreement with Carnegie
     40  * Mellon University, makes this software available to CMU to distribute
     41  * or use in any manner that they see fit as long as this message is kept with
     42  * the software. For this reason TFS also grants any other persons or
     43  * organisations permission to use or modify this software.
     44  *
     45  * TFS supplies this software to be publicly redistributed
     46  * on the understanding that TFS is not responsible for the correct
     47  * functioning of this software in any circumstances.
     48  */
     49 
     50 /*
     51  * AHA-1640 MCA bus code by Scott Telford
     52  */
     53 
     54 #include <sys/cdefs.h>
     55 __KERNEL_RCSID(0, "$NetBSD: aha_mca.c,v 1.6 2001/11/22 20:25:58 jdolecek Exp $");
     56 
     57 #include <sys/param.h>
     58 #include <sys/systm.h>
     59 #include <sys/device.h>
     60 
     61 #include <machine/bus.h>
     62 #include <machine/intr.h>
     63 
     64 #include <dev/scsipi/scsi_all.h>
     65 #include <dev/scsipi/scsipi_all.h>
     66 #include <dev/scsipi/scsiconf.h>
     67 
     68 #include <dev/isa/isavar.h>
     69 #include <dev/isa/isadmavar.h>
     70 
     71 #include <dev/ic/ahareg.h>
     72 #include <dev/ic/ahavar.h>
     73 
     74 #include <dev/mca/mcareg.h>
     75 #include <dev/mca/mcavar.h>
     76 #include <dev/mca/mcadevs.h>
     77 
     78 #define	AHA_ISA_IOSIZE	4
     79 
     80 int	aha_mca_probe __P((struct device *, struct cfdata *, void *));
     81 void	aha_mca_attach __P((struct device *, struct device *, void *));
     82 
     83 struct cfattach aha_mca_ca = {
     84 	sizeof(struct aha_softc), aha_mca_probe, aha_mca_attach
     85 };
     86 
     87 
     88 int
     89 aha_mca_probe(parent, match, aux)
     90 	struct device *parent;
     91 	struct cfdata *match;
     92 	void *aux;
     93 {
     94 	register struct mca_attach_args *ma = aux;
     95 
     96 	switch(ma->ma_id) {
     97 	case MCA_PRODUCT_AHA1640:
     98 		return 1;
     99 	}
    100 
    101 	return 0;
    102 }
    103 
    104 
    105 /*
    106  * Attach all the sub-devices we can find
    107  */
    108 void
    109 aha_mca_attach(parent, self, aux)
    110 	struct device *parent, *self;
    111 	void *aux;
    112 {
    113 	struct mca_attach_args *ma = aux;
    114 	struct aha_softc *sc = (void *)self;
    115 	bus_space_tag_t iot = ma->ma_iot;
    116 	bus_space_handle_t ioh;
    117 	struct aha_probe_data apd;
    118 	mca_chipset_tag_t mc = ma->ma_mc;
    119 	bus_addr_t iobase;
    120 
    121 	apd.sc_irq = (ma->ma_pos[4] & 0x7) + 8;
    122 	apd.sc_drq = ma->ma_pos[5] & 0xf;
    123 	apd.sc_scsi_dev = (ma->ma_pos[4] & 0xe0) >> 5;
    124 
    125 	printf(" slot %d irq %d drq %d: Adaptec AHA-1640 SCSI Adapter\n",
    126 		ma->ma_slot + 1,
    127 		apd.sc_irq, apd.sc_drq);
    128 
    129 	iobase = ((ma->ma_pos[3] & 0x03) << 8) + 0x30 +
    130 		 ((ma->ma_pos[3] & 0x40) >> 4);
    131 
    132 	if (bus_space_map(iot, iobase, AHA_ISA_IOSIZE, 0, &ioh)) {
    133 		printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
    134 		return;
    135 	}
    136 
    137 	sc->sc_iot = iot;
    138 	sc->sc_ioh = ioh;
    139 	sc->sc_dmat = ma->ma_dmat;
    140 
    141 	/*
    142 	 * AHA1640 should be bus-mastering card, should not need any
    143 	 * assistance by MCA DMA controller for DMA transfers.
    144 	 */
    145 
    146 	sc->sc_ih = mca_intr_establish(mc, apd.sc_irq, IPL_BIO, aha_intr, sc);
    147 	if (sc->sc_ih == NULL) {
    148 		printf("%s: couldn't establish interrupt\n",
    149 		    sc->sc_dev.dv_xname);
    150 		return;
    151 	}
    152 
    153 	aha_attach(sc, &apd);
    154 }
    155