/* $NetBSD: dpt_eisa.c,v 1.24 2021/01/27 04:35:15 thorpej Exp $ */

/* $NetBSD: dpt_eisa.c,v 1.24 2021/01/27 04:35:15 thorpej Exp $ */

/*
* Copyright (c) 1999, 2000, 2001 Andrew Doran <[email protected]>
* All rights reserved.
*
* 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 AUTHOR 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 AUTHOR 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.
*
*/

/*
* EISA front-end for DPT EATA SCSI driver.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: dpt_eisa.c,v 1.24 2021/01/27 04:35:15 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/queue.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/ic/dptreg.h>
#include <dev/ic/dptvar.h>

#include <dev/i2o/dptivar.h>

#define DPT_EISA_SLOT_OFFSET 0x0c00
#define DPT_EISA_IOSIZE 0x0100
#define DPT_EISA_IOCONF 0x90
#define DPT_EISA_EATA_REG_OFFSET 0x88

static void dpt_eisa_attach(device_t, device_t, void *);
static int dpt_eisa_irq(bus_space_tag_t, bus_space_handle_t, int *);
static int dpt_eisa_match(device_t, cfdata_t, void *);

CFATTACH_DECL_NEW(dpt_eisa, sizeof(struct dpt_softc),
dpt_eisa_match, dpt_eisa_attach, NULL, NULL);

static const struct device_compatible_entry compat_data[] = {
{ .compat = "DPT2402" },
{ .compat = "DPTA401" },
{ .compat = "DPTA402" },
{ .compat = "DPTA410" },
{ .compat = "DPTA411" },
{ .compat = "DPTA412" },
{ .compat = "DPTA420" },
{ .compat = "DPTA501" },
{ .compat = "DPTA502" },
{ .compat = "DPTA701" },
{ .compat = "DPTBC01" },
{ .compat = "NEC8200" }, /* OEM */
{ .compat = "ATT2408" }, /* OEM */
DEVICE_COMPAT_EOL
};

static int
dpt_eisa_irq(bus_space_tag_t iot, bus_space_handle_t ioh, int *irq)
{

switch (bus_space_read_1(iot, ioh, DPT_EISA_IOCONF) & 0x38) {
case 0x08:
*irq = 11;
break;
case 0x10:
*irq = 15;
break;
case 0x20:
*irq = 14;
break;
default:
return (-1);
}

return (0);
}

static int
dpt_eisa_match(device_t parent, cfdata_t match, void *aux)
{
struct eisa_attach_args *ea = aux;

return eisa_compatible_match(ea, compat_data);
}

static void
dpt_eisa_attach(device_t parent, device_t self, void *aux)
{
struct eisa_attach_args *ea;
bus_space_handle_t ioh;
eisa_chipset_tag_t ec;
eisa_intr_handle_t ih;
struct dpt_softc *sc;
bus_space_tag_t iot;
const char *intrstr;
int irq;
char intrbuf[EISA_INTRSTR_LEN];

ea = aux;
sc = device_private(self);
sc->sc_dev = self;
iot = ea->ea_iot;
ec = ea->ea_ec;

printf(": ");

if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) +
DPT_EISA_SLOT_OFFSET, DPT_EISA_IOSIZE, 0, &ioh)) {
aprint_error("can't map i/o space\n");
return;
}

sc->sc_iot = iot;
sc->sc_ioh = ioh;
sc->sc_dmat = ea->ea_dmat;

/* Map and establish the interrupt. */
if (dpt_eisa_irq(iot, ioh, &irq)) {
aprint_error("HBA on invalid IRQ\n");
return;
}

if (eisa_intr_map(ec, irq, &ih)) {
aprint_error("can't map interrupt (%d)\n", irq);
return;
}

intrstr = eisa_intr_string(ec, ih, intrbuf, sizeof(intrbuf));
sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO,
dpt_intr, sc);
if (sc->sc_ih == NULL) {
aprint_error("can't establish interrupt");
if (intrstr != NULL)
aprint_error(" at %s", intrstr);
aprint_error("\n");
return;
}

/* Read the EATA configuration. */
if (dpt_readcfg(sc)) {
aprint_error_dev(sc->sc_dev, "readcfg failed - see dpt(4)\n");
return;
}

sc->sc_bustype = SI_EISA_BUS;
sc->sc_isaport = EISA_SLOT_ADDR(ea->ea_slot) + DPT_EISA_SLOT_OFFSET;
sc->sc_isairq = irq;

/* Now attach to the bus-independent code. */
dpt_init(sc, intrstr);
}