/* $NetBSD: bha_eisa.c,v 1.38 2021/01/27 04:35:15 thorpej Exp $ */

/* $NetBSD: bha_eisa.c,v 1.38 2021/01/27 04:35:15 thorpej Exp $ */

/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bha_eisa.c,v 1.38 2021/01/27 04:35:15 thorpej Exp $");

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

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

#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>

#include <dev/eisa/eisavar.h>
#include <dev/eisa/eisadevs.h>

#include <dev/ic/bhareg.h>
#include <dev/ic/bhavar.h>

#define BHA_EISA_SLOT_OFFSET 0x0c80
#define BHA_EISA_IOSIZE 0x0010
#define BHA_ISA_IOSIZE 0x0004

#define BHA_EISA_IOCONF 0x0c

static int bha_eisa_address(bus_space_tag_t, bus_space_handle_t, int *);
static int bha_eisa_match(device_t, cfdata_t, void *);
static void bha_eisa_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(bha_eisa, sizeof(struct bha_softc),
bha_eisa_match, bha_eisa_attach, NULL, NULL);

static int
bha_eisa_address(bus_space_tag_t iot, bus_space_handle_t ioh, int *portp)
{
int port;

switch (bus_space_read_1(iot, ioh, BHA_EISA_IOCONF) & 0x07) {
case 0x00:
port = 0x330;
break;
case 0x01:
port = 0x334;
break;
case 0x02:
port = 0x230;
break;
case 0x03:
port = 0x234;
break;
case 0x04:
port = 0x130;
break;
case 0x05:
port = 0x134;
break;
default:
return (1);
}

*portp = port;
return (0);
}

static const struct device_compatible_entry compat_data[] = {
{ .compat = "BUS4201", .data = EISA_PRODUCT_BUS4201 },
{ .compat = "BUS4202", .data = EISA_PRODUCT_BUS4202 },
DEVICE_COMPAT_EOL
};

/*
* Check the slots looking for a board we recognise
* If we find one, note its address (slot) and call
* the actual probe routine to check it out.
*/
static int
bha_eisa_match(device_t parent, cfdata_t match, void *aux)
{
struct eisa_attach_args *ea = aux;
bus_space_tag_t iot = ea->ea_iot;
bus_space_handle_t ioh, ioh2;
int port;
int rv;

if (!eisa_compatible_match(ea, compat_data))
return (0);

if (bus_space_map(iot,
EISA_SLOT_ADDR(ea->ea_slot) + BHA_EISA_SLOT_OFFSET, BHA_EISA_IOSIZE,
0, &ioh))
return (0);

if (bha_eisa_address(iot, ioh, &port) ||
bus_space_map(iot, port, BHA_ISA_IOSIZE, 0, &ioh2)) {
bus_space_unmap(iot, ioh, BHA_EISA_IOSIZE);
return (0);
}

rv = bha_find(iot, ioh2);

bus_space_unmap(iot, ioh2, BHA_ISA_IOSIZE);
bus_space_unmap(iot, ioh, BHA_EISA_IOSIZE);

return (rv);
}

/*
* Attach all the sub-devices we can find
*/
static void
bha_eisa_attach(device_t parent, device_t self, void *aux)
{
struct eisa_attach_args *ea = aux;
struct bha_softc *sc = device_private(self);
const struct device_compatible_entry *dce;
bus_space_tag_t iot = ea->ea_iot;
bus_space_handle_t ioh, ioh2;
int port;
struct bha_probe_data bpd;
eisa_chipset_tag_t ec = ea->ea_ec;
eisa_intr_handle_t ih;
const char *intrstr;
char intrbuf[EISA_INTRSTR_LEN];

sc->sc_dev = self;

dce = eisa_compatible_lookup(ea, compat_data);
KASSERT(dce != NULL);

printf(": %s\n", (const char *)dce->data);

if (bus_space_map(iot,
EISA_SLOT_ADDR(ea->ea_slot) + BHA_EISA_SLOT_OFFSET, BHA_EISA_IOSIZE,
0, &ioh))
panic("bha_eisa_attach: could not map EISA slot");

if (bha_eisa_address(iot, ioh, &port) ||
bus_space_map(iot, port, BHA_ISA_IOSIZE, 0, &ioh2))
panic("bha_eisa_attach: could not map ISA address");

sc->sc_iot = iot;
sc->sc_ioh = ioh2;
sc->sc_dmat = ea->ea_dmat;
if (!bha_probe_inquiry(iot, ioh2, &bpd))
panic("bha_eisa_attach failed");

sc->sc_dmaflags = 0;

if (eisa_intr_map(ec, bpd.sc_irq, &ih)) {
aprint_error_dev(sc->sc_dev, "couldn't map interrupt (%d)\n",
bpd.sc_irq);
return;
}
intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf));
sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
bha_intr, sc);
if (sc->sc_ih == NULL) {
aprint_error_dev(sc->sc_dev, "couldn't establish interrupt");
if (intrstr != NULL)
aprint_error(" at %s", intrstr);
aprint_error("\n");
return;
}
aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);

bha_attach(sc);
}