/* $NetBSD: com_arbus.c,v 1.13 2018/12/08 17:46:12 thorpej Exp $ */
/*-
* Copyright (c) 2006 Urbana-Champaign Independent Media Center.
* Copyright (c) 2006 Garrett D'Amore.
* All rights reserved.
*
* Portions of this code were written by Garrett D'Amore for the
* Champaign-Urbana Community Wireless Network Project.
*
* 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 acknowledgements:
*      This product includes software developed by the Urbana-Champaign
*      Independent Media Center.
*      This product includes software developed by Garrett D'Amore.
* 4. Urbana-Champaign Independent Media Center's name and Garrett
*    D'Amore's name may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT
* MEDIA CENTER AND GARRETT D'AMORE ``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 URBANA-CHAMPAIGN INDEPENDENT
* MEDIA CENTER OR GARRETT D'AMORE 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.
*/

/*-
* 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.
*/

/*-
* Copyright (c) 1991 The Regents of the University of California.
* 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.
* 3. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*
*      @(#)com.c       7.5 (Berkeley) 5/16/91
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: com_arbus.c,v 1.13 2018/12/08 17:46:12 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/termios.h>
#include <sys/ttydefaults.h>
#include <sys/types.h>

#include <sys/bus.h>

#include <dev/cons.h>
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>

#include <mips/cpuregs.h>
#include <mips/atheros/include/arbusvar.h>

#include "opt_com.h"

struct com_arbus_softc {
       struct com_softc sc_com;
};

static void com_arbus_init_regs(struct com_regs *, bus_space_tag_t,
                               bus_space_handle_t, bus_addr_t, bus_size_t);
//static bus_space_tag_t com_arbus_get_bus_space_tag(void);
static int com_arbus_match(device_t, cfdata_t , void *);
static void com_arbus_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(com_arbus, sizeof(struct com_arbus_softc),
   com_arbus_match, com_arbus_attach, NULL, NULL);

#if 0
#ifdef  TTYDEF_SPEED
#define COM_ARBUS_BAUD  TTYDEF_SPEED
#else
#define COM_ARBUS_BAUD  115200
#endif
#endif

#ifndef COM_ARBUS_BAUD
#define COM_ARBUS_BAUD  115200
#endif

int     com_arbus_baud = COM_ARBUS_BAUD;

#define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */

#ifndef COM_REGMAP
#error  COM_REGMAP not defined!
#endif

int
com_arbus_match(device_t parent, cfdata_t cf, void *aux)
{
       struct arbus_attach_args        *aa = aux;
       bus_space_handle_t              bsh;
       struct com_regs                 regs;
       int                             rv;

       if (strcmp(aa->aa_name, cf->cf_name) != 0)
               return 0;

       if (com_is_console(aa->aa_bst, aa->aa_addr, &regs.cr_ioh))
               return 1;

       if (bus_space_map(aa->aa_bst, aa->aa_addr, aa->aa_size,
               0, &bsh))
               return 0;

       com_arbus_init_regs(&regs, aa->aa_bst, bsh, aa->aa_addr, aa->aa_size);

       rv = com_probe_subr(&regs);

       bus_space_unmap(aa->aa_bst, bsh, aa->aa_size);

       return rv;
}

void
com_arbus_attach(device_t parent, device_t self, void *aux)
{
       struct com_arbus_softc *arsc = device_private(self);
       struct com_softc *sc = &arsc->sc_com;
       struct arbus_attach_args *aa = aux;
       prop_number_t prop;
       bus_space_handle_t ioh;

       sc->sc_dev = self;

       prop = prop_dictionary_get(device_properties(sc->sc_dev),
           "frequency");
       if (prop == NULL) {
               aprint_error(": unable to get frequency property\n");
               return;
       }
       KASSERT(prop_object_type(prop) == PROP_TYPE_NUMBER);

       sc->sc_frequency = (int)prop_number_integer_value(prop);

       if (!com_is_console(aa->aa_bst, aa->aa_addr, &ioh)
           && bus_space_map(aa->aa_bst, aa->aa_addr, aa->aa_size, 0,
                   &ioh) != 0) {
               aprint_error(": can't map registers\n");
               return;
       }

       com_arbus_init_regs(&sc->sc_regs, aa->aa_bst, ioh, aa->aa_addr,
                           aa->aa_size);

       com_attach_subr(sc);

       arbus_intr_establish(aa->aa_cirq, aa->aa_mirq, comintr, sc);
}

static void
com_arbus_init_regs(struct com_regs *regsp, bus_space_tag_t st,
                   bus_space_handle_t sh, bus_addr_t addr, bus_size_t size)
{
#if _BYTE_ORDER == _BIG_ENDIAN
       int off = 3;
#else
       int off = 0;
#endif

       com_init_regs(regsp, st, sh, addr);

       /* rewrite the map to shift for alignment */
       for (size_t i = 0; i < __arraycount(regsp->cr_map); i++) {
               regsp->cr_map[i] = (regsp->cr_map[i] * 4) + off;
       }
       regsp->cr_nports = size;
}

void
com_arbus_cnattach(bus_addr_t addr, uint32_t freq)
{
       bus_space_tag_t         bst;
       bus_space_handle_t      bsh;
       struct com_regs         regs;

       bst = arbus_get_bus_space_tag();

       if (bus_space_map(bst, addr, 0x1000, 0, &bsh))
               return;

       com_arbus_init_regs(&regs, bst, bsh, addr, 0x1000);

       comcnattach1(&regs, com_arbus_baud, freq, COM_TYPE_NORMAL, CONMODE);
}

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