sys/dev/mca/aha_mca.c

   1 /*      $NetBSD: aha_mca.c,v 1.21 2009/09/21 08:12:47 tsutsui Exp $     */
   2
   3 /*
   4  * Copyright (c) 2000-2002 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@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 1.21 2009/09/21 08:12:47 tsutsui Exp $");
  56
  57 #include <sys/param.h>
  58 #include <sys/systm.h>
  59 #include <sys/device.h>
  60
  61 #include <sys/bus.h>
  62 #include <sys/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 static int      aha_mca_probe(device_t, cfdata_t, void *);
  81 static void     aha_mca_attach(device_t, device_t, void *);
  82
  83 CFATTACH_DECL_NEW(aha_mca, sizeof(struct aha_softc),
  84     aha_mca_probe, aha_mca_attach, NULL, NULL);
  85
  86 int
  87 aha_mca_probe(device_t parent, cfdata_t match, void *aux)
  88 {
  89         register struct mca_attach_args *ma = aux;
  90
  91         if (ma->ma_id == MCA_PRODUCT_AHA1640)
  92                 return (1);
  93
  94         return (0);
  95 }
  96
  97
  98 void
  99 aha_mca_attach(device_t parent, device_t self, void *aux)
 100 {
 101         struct mca_attach_args *ma = aux;
 102         struct aha_softc *sc = device_private(self);
 103         bus_space_tag_t iot = ma->ma_iot;
 104         bus_space_handle_t ioh;
 105         struct aha_probe_data apd;
 106         mca_chipset_tag_t mc = ma->ma_mc;
 107         bus_addr_t iobase;
 108
 109         sc->sc_dev =self;
 110
 111         /*
 112          * POS registers differ much between 8003 and 8013, so they are
 113          * divided to two sections.
 114          *
 115          * POS register 2: (adf pos0)
 116          * 7 6 5 4 3 2 1 0
 117          * | 0 0 0 0 0 0 \__ enable: 0=adapter disabled, 1=adapter enabled
 118          *  \_______________ Adapter BIOS location
 119          *
 120          * POS register 3: (adf pos1)
 121          * 7 6 5 4 3 2 1 0
 122          * \_/ \___/ \___/
 123          *  |    |       \__ I/O Port Address (upper part)
 124          *  |    |__________ Adapter BIOS location
 125          *  |_______________ I/O Port Address (lower part)
 126          *
 127          * POS register 4: (adf pos2)
 128          * 7 6 5 4 3 2 1 0
 129          * \___/ | | \___/
 130          *   |   | |     \__ IRQ: XXX+8
 131          *   |   | |________ Sync xfer started by AHA-1640: 1=YES 2=NO
 132          *   |   |__________ SCSI Parity Checking On/Off
 133          *   |______________ SCSI Address
 134          *
 135          * POS register 3: (adf pos3)
 136          * 7 6 5 4 3 2 1 0
 137          *       | \_____/
 138          *       |       \__ Arbitration lvl (DMA channel)
 139          *       |__________ Fairness On/Off
 140          *
 141          */
 142
 143         apd.sc_irq = (ma->ma_pos[4] & 0x7) + 8;
 144         apd.sc_drq = ma->ma_pos[5] & 0xf;
 145         apd.sc_scsi_dev = (ma->ma_pos[4] & 0xe0) >> 5;
 146
 147         printf(" slot %d irq %d drq %d: Adaptec AHA-1640 SCSI Adapter\n",
 148                 ma->ma_slot + 1,
 149                 apd.sc_irq, apd.sc_drq);
 150
 151         iobase = ((ma->ma_pos[3] & 0x03) << 8) + 0x30 +
 152                  ((ma->ma_pos[3] & 0x40) >> 4);
 153
 154         if (bus_space_map(iot, iobase, AHA_ISA_IOSIZE, 0, &ioh)) {
 155                 aprint_error_dev(self, "can't map i/o space\n");
 156                 return;
 157         }
 158
 159         sc->sc_iot = iot;
 160         sc->sc_ioh = ioh;
 161         sc->sc_dmat = ma->ma_dmat;
 162
 163         /*
 164          * AHA1640 is bus-mastering card, does not need any assistance
 165          * with DMA transfers by MCA DMA controller.
 166          */
 167
 168         sc->sc_ih = mca_intr_establish(mc, apd.sc_irq, IPL_BIO, aha_intr, sc);
 169         if (sc->sc_ih == NULL) {
 170                 aprint_error_dev(self, "couldn't establish interrupt\n");
 171                 return;
 172         }
 173
 174         aha_attach(sc, &apd);
 175 }