* Copyright (c) 2000-2002 The NetBSD Foundation, Inc.

/* $NetBSD: aha_mca.c,v 1.22 2009/09/22 13:22:53 tsutsui 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 ([email protected])
* 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 1.22 2009/09/22 13:22:53 tsutsui Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <sys/bus.h>
#include <sys/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

static int aha_mca_probe(device_t, cfdata_t, void *);
static void aha_mca_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(aha_mca, sizeof(struct aha_softc),
aha_mca_probe, aha_mca_attach, NULL, NULL);

int
aha_mca_probe(device_t parent, cfdata_t 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(device_t parent, device_t self, void *aux)
{
struct mca_attach_args *ma = aux;
struct aha_softc *sc = device_private(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;

sc->sc_dev =self;

/*
* 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)) {
aprint_error_dev(self, "can't map i/o space\n");
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) {
aprint_error_dev(self, "couldn't establish interrupt\n");
return;
}

aha_attach(sc, &apd);
}