/*      $NetBSD: auxio_ebus.c,v 1.7 2023/12/20 05:33:58 thorpej Exp $   */

/*
* Copyright (c) 2000, 2001, 2015 Matthew R. Green
* 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 ``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 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.
*/

/*
* AUXIO registers support on the sbus & ebus2, used for the floppy driver
* and to control the system LED, for the BLINK option.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: auxio_ebus.c,v 1.7 2023/12/20 05:33:58 thorpej Exp $");

#include "opt_auxio.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/callout.h>
#include <sys/errno.h>
#include <sys/device.h>

#include <machine/autoconf.h>
#include <machine/cpu.h>

#include <dev/ebus/ebusreg.h>
#include <dev/ebus/ebusvar.h>
#include <dev/sbus/sbusvar.h>
#include <sparc64/dev/auxioreg.h>
#include <sparc64/dev/auxiovar.h>

static int      auxio_ebus_match(device_t, cfdata_t, void *);
static void     auxio_ebus_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(auxio_ebus, sizeof(struct auxio_softc),
   auxio_ebus_match, auxio_ebus_attach, NULL, NULL);

static int
auxio_ebus_match(device_t parent, cfdata_t cf, void *aux)
{
       struct ebus_attach_args *ea = aux;

       return (strcmp(AUXIO_ROM_NAME, ea->ea_name) == 0);
}

static void
auxio_ebus_attach(device_t parent, device_t self, void *aux)
{
       struct auxio_softc *sc = device_private(self);
       struct ebus_attach_args *ea = aux;

       sc->sc_dev = self;
       sc->sc_tag = ea->ea_bustag;

       if (ea->ea_nreg < 1) {
               printf(": no registers??\n");
               return;
       }

       sc->sc_flags = AUXIO_EBUS;
       if (ea->ea_nreg != 5) {
               printf(": not 5 (%d) registers, only setting led",
                   ea->ea_nreg);
               sc->sc_flags |= AUXIO_LEDONLY;
       } else if (ea->ea_nvaddr == 5) {
               sparc_promaddr_to_handle(sc->sc_tag,
                       ea->ea_vaddr[1], &sc->sc_pci);
               sparc_promaddr_to_handle(sc->sc_tag,
                       ea->ea_vaddr[2], &sc->sc_freq);
               sparc_promaddr_to_handle(sc->sc_tag,
                       ea->ea_vaddr[3], &sc->sc_scsi);
               sparc_promaddr_to_handle(sc->sc_tag,
                       ea->ea_vaddr[4], &sc->sc_temp);
       } else {
               bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[1]),
                       ea->ea_reg[1].size, 0, &sc->sc_pci);
               bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[2]),
                       ea->ea_reg[2].size, 0, &sc->sc_freq);
               bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[3]),
                       ea->ea_reg[3].size, 0, &sc->sc_scsi);
               bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[4]),
                       ea->ea_reg[4].size, 0, &sc->sc_temp);
       }

       if (ea->ea_nvaddr > 0) {
               sparc_promaddr_to_handle(sc->sc_tag,
                       ea->ea_vaddr[0], &sc->sc_led);
       } else {
               bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]),
                       ea->ea_reg[0].size, 0, &sc->sc_led);
       }

       auxio_attach_common(sc);
}