/* $NetBSD: if_tscs_isa.c,v 1.16 2015/04/13 16:33:24 riastradh Exp $ */

/* $NetBSD: if_tscs_isa.c,v 1.16 2015/04/13 16:33:24 riastradh Exp $ */

/*-
* Copyright (c) 2005 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jesse Off
*
* 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: if_tscs_isa.c,v 1.16 2015/04/13 16:33:24 riastradh Exp $");

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

#include <net/if.h>
#include <net/if_ether.h>
#include <net/if_media.h>

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

#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>

#include <dev/ic/cs89x0reg.h>
#include <dev/ic/cs89x0var.h>
#include <dev/isa/cs89x0isavar.h>

static int tscs_isa_probe(device_t, cfdata_t, void *);
static void tscs_isa_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(tscs_isa, sizeof(struct cs_softc_isa),
tscs_isa_probe, tscs_isa_attach, NULL, NULL);

int
tscs_isa_probe(device_t parent, cfdata_t cf, void *aux)
{
struct isa_attach_args *ia = aux;
bus_space_tag_t iot = ia->ia_iot;
bus_space_handle_t ioh, pldh;
struct cs_softc sc;
int rv = 0, have_io = 0, have_pld = 0, irq;
u_int8_t jpcfg;

if (ia->ia_nio < 1)
return (0);
if (ia->ia_nirq < 1)
return (0);

if (ISA_DIRECT_CONFIG(ia))
return (0);

/*
* Disallow wildcarded I/O base.
*/
if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
return (0);

/*
* Map the I/O space.
*/
if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr - 0x300, 9,
0, &pldh))
goto out;
have_pld = 1;

if ((bus_space_read_1(ia->ia_iot, pldh, 0) & 0xf) == 0xa &&
(bus_space_read_1(ia->ia_iot, pldh, 0x8) & 0xf) == 0x5 &&
(bus_space_read_1(ia->ia_iot, pldh, 0x8) & 0xf) == 0xa) {
bus_space_read_1(ia->ia_iot, pldh, 0x8); /* PLD rev. */
jpcfg = bus_space_read_1(ia->ia_iot, pldh, 0x8) & 0xf;
} else {
goto out;
}

if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE,
0, &ioh))
goto out;
have_io = 1;

memset(&sc, 0, sizeof sc);
sc.sc_iot = iot;
sc.sc_ioh = ioh;
/* Verify that it's a Crystal product. */
if (CS_READ_PACKET_PAGE_IO(&sc, PKTPG_EISA_NUM) !=
EISA_NUM_CRYSTAL)
goto out;

/*
* Verify that it's a supported chip.
*/
switch (CS_READ_PACKET_PAGE_IO(&sc, PKTPG_PRODUCT_ID) &
PROD_ID_MASK) {
case PROD_ID_CS8900:
break;
default:
/* invalid product ID */
goto out;
}

/*
* If the IRQ wasn't specified, get it from the EEPROM.
*/
if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) {
switch (jpcfg >> 1) {
case 0x1:
irq = 5;
break;
case 0x2:
irq = 6;
break;
case 0x4:
irq = 7;
break;
default:
goto out;
}
} else
irq = ia->ia_irq[0].ir_irq;

ia->ia_nio = 1;
ia->ia_io[0].ir_size = CS8900_IOSIZE;
ia->ia_niomem = 0;
ia->ia_nirq = 1;
ia->ia_ndrq = 0;
ia->ia_irq[0].ir_irq = irq;

rv = 1;

out:
if (have_io)
bus_space_unmap(iot, ioh, CS8900_IOSIZE);
if (have_pld)
bus_space_unmap(iot, pldh, 0x9);

return (rv);
}

void
tscs_isa_attach(device_t parent, device_t self, void *aux)
{
struct cs_softc_isa *isc = device_private(self);
struct cs_softc *sc = &isc->sc_cs;
struct isa_attach_args *ia = aux;

sc->sc_dev = self;
isc->sc_ic = ia->ia_ic;
sc->sc_iot = ia->ia_iot;
sc->sc_memt = ia->ia_memt;

isc->sc_drq = -1;
sc->sc_irq = ia->ia_irq[0].ir_irq;

printf(": Technologic Systems TS-ETH10\n");

/*
* Map the device.
*/
if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, CS8900_IOSIZE,
0, &sc->sc_ioh)) {
aprint_error_dev(self, "unable to map i/o space\n");
return;
}

sc->sc_ih = isa_intr_establish(ia->ia_ic, sc->sc_irq, IST_EDGE,
IPL_NET, cs_intr, sc);
if (sc->sc_ih == NULL) {
aprint_error_dev(self, "unable to establish interrupt\n");
return;
}

sc->sc_dma_chipinit = NULL;
sc->sc_dma_attach = NULL;
sc->sc_dma_process_rx = NULL;

/* all jumper routed IRQs are connected to pseudo CS8900 IRQ 5 */
sc->sc_irq = 5;

cs_attach(sc, NULL, NULL, 0, 0);
}