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Support for TS-ETH10 PC/104 enet isa card based on CS8900

/*	$NetBSD: if_tscs_isa.c,v 1.1 2005/01/08 02:55:52 joff 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the NetBSD
 *	Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * 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 1.1 2005/01/08 02:55:52 joff Exp $");

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

#include "rnd.h"
#if NRND > 0
#include <sys/rnd.h>
#endif

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

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

int	tscs_isa_probe __P((struct device *, struct cfdata *, void *));
void	tscs_isa_attach __P((struct device *, struct device *, void *));

CFATTACH_DECL(tscs_isa, sizeof(struct cs_softc),
    tscs_isa_probe, tscs_isa_attach, NULL, NULL);

int 
tscs_isa_probe(parent, cf, aux)
	struct device *parent;
	struct cfdata *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(parent, self, aux)
	struct device *parent, *self;
	void *aux;
{
	struct cs_softc *sc = (struct cs_softc *) self;
	struct cs_softc_isa *isc = (void *) self;
	struct isa_attach_args *ia = aux;

	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)) {
		printf("%s: unable to map i/o space\n", sc->sc_dev.dv_xname);
		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) {
		printf("%s: unable to establish interrupt\n",
		    sc->sc_dev.dv_xname);
		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);
}