bt5xx-445.c

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    1 /*
    2  * Written by Julian Elischer (julian@tfs.com)
    3  * for TRW Financial Systems for use under the MACH(2.5) operating system.
    4  *
    5  * TRW Financial Systems, in accordance with their agreement with Carnegie
    6  * Mellon University, makes this software available to CMU to distribute
    7  * or use in any manner that they see fit as long as this message is kept with
    8  * the software. For this reason TFS also grants any other persons or
    9  * organisations permission to use or modify this software.
   10  *
   11  * TFS supplies this software to be publicly redistributed
   12  * on the understanding that TFS is not responsible for the correct
   13  * functioning of this software in any circumstances.
   14  *
   15  * $FreeBSD: src/sys/i386/isa/bt5xx-445.c,v 1.4.2.1 1999/09/05 08:12:27 peter Exp $
   16  */
   17 
   18 /*
   19  * Bulogic/Bustek 32 bit Addressing Mode SCSI driver.
   20  *
   21  * NOTE: 1. Some bt5xx card can NOT handle 32 bit addressing mode.
   22  *       2. OLD bt445s Revision A,B,C,D(nowired) + any firmware version
   23  *          has broken busmaster for handling 32 bit addressing on H/W bus
   24  *          side.
   25  *
   26  *       3. Extended probing still needs confirmation from our user base, due
   27  *          to several H/W and firmware dependencies. If you have a problem
   28  *          with extended probing, please contact 'amurai@spec.co.jp'
   29  *
   30  *                                              amurai@spec.co.jp 94/6/16
   31  */
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/kernel.h>
   36 
   37 #include <scsi/scsi_all.h>
   38 #include <scsi/scsiconf.h>
   39 
   40 #include <i386/isa/isa_device.h>
   41 #include <i386/scsi/btreg.h>
   42 
   43 static  int bt_isa_probe __P((struct isa_device *dev));
   44 static  int bt_isa_attach __P((struct isa_device *dev));
   45 
   46 struct isa_driver btdriver =
   47 {
   48     bt_isa_probe,
   49     bt_isa_attach,
   50     "bt"
   51 };
   52 
   53 /*
   54  * Check if the device can be found at the port given
   55  * and if so, set it up ready for further work
   56  * as an argument, takes the isa_device structure from
   57  * autoconf.c
   58  */
   59 static int
   60 bt_isa_probe(dev)
   61         struct isa_device *dev;
   62 {
   63         /*
   64          * find unit and check we have that many defined
   65          */
   66         int     unit = bt_unit;
   67         struct bt_data *bt;
   68 
   69         /*
   70          * We ignore the unit number assigned by config to allow
   71          * consistant numbering between PCI/EISA/ISA devices.
   72          * This is a total kludge until we have a configuration
   73          * manager.
   74          */
   75         dev->id_unit = bt_unit;
   76         /*
   77          * Allocate a storage area for us
   78          */
   79         bt = bt_alloc(unit, dev->id_iobase);
   80         if (!bt) 
   81                 return 0;
   82 
   83         /*
   84          * Try initialise a unit at this location
   85          * sets up dma and bus speed, loads bt->bt_int
   86          */
   87         if (bt_init(bt) != 0) {
   88                 bt_free(bt);
   89                 return 0;
   90         }
   91         /*
   92          * If it's there, put in it's interrupt vectors
   93          */
   94         dev->id_unit = unit;
   95         dev->id_irq = (1 << bt->bt_int);
   96         dev->id_drq = bt->bt_dma;
   97 
   98         bt_unit++;
   99         return 1;
  100 }
  101 
  102 /*
  103  * Attach all the sub-devices we can find
  104  */
  105 static int
  106 bt_isa_attach(dev)
  107         struct isa_device *dev;
  108 {
  109         int     unit = dev->id_unit;
  110         struct  bt_data *bt = btdata[unit];
  111 
  112         return( bt_attach(bt) );
  113 }
  114 
  115 /*
  116  * Handle an ISA interrupt.
  117  * XXX should go away as soon as ISA interrupt handlers
  118  * take a (void *) arg.
  119  */
  120 void
  121 bt_isa_intr(unit)
  122         int     unit;
  123 {
  124         struct bt_data* arg = btdata[unit];
  125         bt_intr((void *)arg);
  126 }

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FreeBSD/Linux Kernel Cross Reference sys/i386/isa/bt5xx-445.c

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sys/i386/isa/bt5xx-445.c