/*      $NetBSD: if_sm_obio.c,v 1.7 2018/02/08 09:05:17 dholland Exp $ */

/*
* Copyright (c) 2002, 2003  Genetec Corporation.  All rights reserved.
* Written by Hiroyuki Bessho for Genetec Corporation.
*
* 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. The name of Genetec Corporation may not be used to endorse or
*    promote products derived from this software without specific prior
*    written permission.
*
* THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``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 GENETEC CORPORATION
* 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.
*
* attach sm driver to Lubbock on-board bus
* based on sys/dev/isa/if_sm_isa.c
*
*/

/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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_sm_obio.c,v 1.7 2018/02/08 09:05:17 dholland Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/errno.h>
#include <sys/syslog.h>
#include <sys/select.h>
#include <sys/device.h>

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

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

#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>

#include <dev/ic/smc91cxxreg.h>
#include <dev/ic/smc91cxxvar.h>

#include <evbarm/lubbock/lubbock_var.h>

#include "opt_lubbock.h"        /* LUBBOCK_SMC91C96_16BIT */

int     sm_obio_match(device_t, cfdata_t, void *);
void    sm_obio_attach(device_t, device_t, void *);

struct sm_obio_softc {
       struct  smc91cxx_softc sc_smc;          /* real "smc" softc */

       /* OBIO-specific goo. */
       void    *sc_ih;                         /* interrupt handler */
};

CFATTACH_DECL_NEW(sm_obio, sizeof(struct sm_obio_softc), sm_obio_match,
   sm_obio_attach, NULL, NULL);

extern struct bus_space  smobio8_bs_tag;

#ifndef SM_OBIO_INTR_PARANOIA
# define smintr smc91cxx_intr
#else
# define smintr smc_obio_intr

static int
smc_obio_intr(void *arg)
{
       while (smc91cxx_intr(arg))
               ;
       return 1;
}
#endif /* SM_OBIO_INTR_PARANOIA */

int
sm_obio_match(device_t parent, cfdata_t match, void *aux)
{
       struct obio_attach_args *oba = aux;
       bus_space_tag_t iot = &smobio8_bs_tag;
       bus_space_handle_t ioh;
       uint16_t tmp;
       int rv = 0;
       extern const char *smc91cxx_idstrs[];


       /* Map i/o space. */
       if (bus_space_map(iot, oba->oba_addr, SMC_IOSIZE, 0, &ioh))
               return (0);


       /* Check that high byte of BANK_SELECT is what we expect. */
       tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
       if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
               goto out;

       /*
        * Switch to bank 0 and perform the test again.
        * XXX INVASIVE!
        */
       bus_space_write_1(iot, ioh, BANK_SELECT_REG_W, 0);
       tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
       if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
               goto out;

       /*
        * Check for a recognized chip id.
        * XXX INVASIVE!
        */
       bus_space_write_1(iot, ioh, BANK_SELECT_REG_W, 3);
       tmp = bus_space_read_2(iot, ioh, REVISION_REG_W);
       if (smc91cxx_idstrs[RR_ID(tmp)] == NULL)
               goto out;

       /*
        * Assume we have an SMC91Cxx.
        */

       rv = 1;

out:
       bus_space_unmap(iot, ioh, SMC_IOSIZE);
       if (!rv) {
               printf("on-board SMC probe failed\n");
       }
       return (rv);
}

void
sm_obio_attach(device_t parent, device_t self, void *aux)
{
       struct sm_obio_softc *isc = device_private(self);
       struct smc91cxx_softc *sc = &isc->sc_smc;
       struct obio_attach_args *oba = aux;
       bus_space_handle_t ioh;
#ifdef LUBBOCK_SMC91C96_16BIT
       bus_space_tag_t iot = &pxa2x0_a4x_bs_tag;
#else
       bus_space_tag_t iot = &smobio8_bs_tag;
#endif


       printf("\n");

       /* Map i/o space. */
       if (bus_space_map(iot, oba->oba_addr, SMC_IOSIZE, 0, &ioh))
               panic("sm_obio_attach: can't map i/o space");

#ifdef LUBBOCK_SMC91C96_16BIT
       /* RedBoot initializes on-board SMSC91C96 in 8-bit mode.
          we take it back to 16-bit by clearing ECSR.IOIs8 */
       {
               int tmp;

               bus_space_write_1(&smobio8_bs_tag, ioh, BANK_SELECT_REG_W, 4);
               tmp = bus_space_read_1(&smobio8_bs_tag, ioh, ECSR_REG_B);
               bus_space_write_1(&smobio8_bs_tag, ioh,
                   ECSR_REG_B, tmp & ~ECSR_IOIS8);
       }

       obio16_write(LUBBOCK_MISCWR,
           obio16_read(LUBBOCK_MISCWR) & ~MISCWR_ENETEN16 );

#else
       /* Force 8bit mode */
       obio16_write(LUBBOCK_MISCWR,
           obio16_read(LUBBOCK_MISCWR) | MISCWR_ENETEN16);

#endif /* LUBBOCK_SMC91C96_16BIT */

       sc->sc_dev = self;
       sc->sc_bst = iot;
       sc->sc_bsh = ioh;

       /* should always be enabled */
       sc->sc_flags |= SMC_FLAGS_ENABLED;

       /* Perform generic initialization. */
       smc91cxx_attach(sc, NULL);

       /* Establish the interrupt handler. */
       isc->sc_ih = obio_intr_establish(device_private(parent),
                                        oba->oba_intr, IPL_NET, smintr, sc);

       if (isc->sc_ih == NULL)
               aprint_normal_dev(self, "couldn't establish interrupt handler\n");
}

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