127 lines
3.0 KiB
C
127 lines
3.0 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* $Id: bt5xx-445.c,v 1.3 1996/03/31 03:06:20 gibbs Exp $
|
|
*/
|
|
|
|
/*
|
|
* Bulogic/Bustek 32 bit Addressing Mode SCSI driver.
|
|
*
|
|
* NOTE: 1. Some bt5xx card can NOT handle 32 bit addressing mode.
|
|
* 2. OLD bt445s Revision A,B,C,D(nowired) + any firmware version
|
|
* has broken busmaster for handling 32 bit addressing on H/W bus
|
|
* side.
|
|
*
|
|
* 3. Extended probing still needs confirmation from our user base, due
|
|
* to several H/W and firmware dependencies. If you have a problem
|
|
* with extended probing, please contact 'amurai@spec.co.jp'
|
|
*
|
|
* amurai@spec.co.jp 94/6/16
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
|
|
#include <scsi/scsi_all.h>
|
|
#include <scsi/scsiconf.h>
|
|
|
|
#include <i386/isa/isa_device.h>
|
|
#include <i386/scsi/btreg.h>
|
|
|
|
static int bt_isa_probe __P((struct isa_device *dev));
|
|
static int bt_isa_attach __P((struct isa_device *dev));
|
|
|
|
struct isa_driver btdriver =
|
|
{
|
|
bt_isa_probe,
|
|
bt_isa_attach,
|
|
"bt"
|
|
};
|
|
|
|
/*
|
|
* Check if the device can be found at the port given
|
|
* and if so, set it up ready for further work
|
|
* as an argument, takes the isa_device structure from
|
|
* autoconf.c
|
|
*/
|
|
static int
|
|
bt_isa_probe(dev)
|
|
struct isa_device *dev;
|
|
{
|
|
/*
|
|
* find unit and check we have that many defined
|
|
*/
|
|
int unit = bt_unit;
|
|
struct bt_data *bt;
|
|
|
|
/*
|
|
* We ignore the unit number assigned by config to allow
|
|
* consistant numbering between PCI/EISA/ISA devices.
|
|
* This is a total kludge until we have a configuration
|
|
* manager.
|
|
*/
|
|
dev->id_unit = bt_unit;
|
|
/*
|
|
* Allocate a storage area for us
|
|
*/
|
|
bt = bt_alloc(unit, dev->id_iobase);
|
|
if (!bt)
|
|
return 0;
|
|
|
|
/*
|
|
* Try initialise a unit at this location
|
|
* sets up dma and bus speed, loads bt->bt_int
|
|
*/
|
|
if (bt_init(bt) != 0) {
|
|
bt_free(bt);
|
|
return 0;
|
|
}
|
|
/*
|
|
* If it's there, put in it's interrupt vectors
|
|
*/
|
|
dev->id_unit = unit;
|
|
dev->id_irq = (1 << bt->bt_int);
|
|
dev->id_drq = bt->bt_dma;
|
|
|
|
bt_unit++;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Attach all the sub-devices we can find
|
|
*/
|
|
static int
|
|
bt_isa_attach(dev)
|
|
struct isa_device *dev;
|
|
{
|
|
int unit = dev->id_unit;
|
|
struct bt_data *bt = btdata[unit];
|
|
|
|
return( bt_attach(bt) );
|
|
}
|
|
|
|
/*
|
|
* Handle an ISA interrupt.
|
|
* XXX should go away as soon as ISA interrupt handlers
|
|
* take a (void *) arg.
|
|
*/
|
|
void
|
|
bt_isa_intr(unit)
|
|
int unit;
|
|
{
|
|
struct bt_data* arg = btdata[unit];
|
|
bt_intr((void *)arg);
|
|
}
|