/*      $NetBSD: gscbus.c,v 1.4 2022/09/29 06:39:58 skrll Exp $ */

/*      $OpenBSD: gscbus.c,v 1.13 2001/08/01 20:32:04 miod Exp $        */

/*
* Copyright (c) 1998 Michael Shalayeff
* 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 OR HIS RELATIVES 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 MIND, 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.
*/

/*
* Sample IO layouts:
* 712:
*
* f0100000 -- lasi0
* f0102000 -- lpt0
* f0104000 -- audio0
* f0105000 -- com0
* f0106000 -- siop0
* f0107000 -- ie0
* f0108000 -- kbd0
* f0108100 -- pms0
* f010a000 -- fdc0
* f010c000 -- *lasi0
* f0200000 -- wax0
* f8000000 -- sti0
* fffbe000 -- cpu0
* fffbf000 -- mem0
*
* 725/50:
*
* f0820000 -- dma
* f0821000 -- hil
* f0822000 -- com1
* f0823000 -- com0
* f0824000 -- lpt0
* f0825000 -- siop0
* f0826000 -- ie0
* f0827000 -- dma reset
* f0828000 -- timers
* f0829000 -- domain kbd
* f082f000 -- asp0
* f1000000 -- audio0
* fc000000 -- eisa0
* fffbe000 -- cpu0
* fffbf000 -- mem0
*
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: gscbus.c,v 1.4 2022/09/29 06:39:58 skrll Exp $");

#define GSCDEBUG

#include "opt_kgdb.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/mbuf.h>
#include <sys/reboot.h>

#include <machine/iomod.h>
#include <machine/autoconf.h>
#include <machine/cpufunc.h>

#include <hppa/gsc/gscbusvar.h>
#include <hppa/hppa/machdep.h>

int     gscmatch(device_t, cfdata_t, void *);
void    gscattach(device_t, device_t, void *);

struct gsc_softc {
       device_t sc_dev;
       struct gsc_attach_args sc_ga;
       void *sc_ih;
};

CFATTACH_DECL_NEW(gsc, sizeof(struct gsc_softc),
   gscmatch, gscattach, NULL, NULL);

/*
* pdc_scanbus calls this function back with each module
* it finds on the GSC bus.  We call the IC-specific function
* to fix up the module's attach arguments, then we match
* and attach it.
*/
static device_t gsc_module_callback(device_t, struct confargs *);
static device_t
gsc_module_callback(device_t self, struct confargs *ca)
{
       struct gsc_softc *sc = device_private(self);
       struct gsc_attach_args ga;

       /* Make the GSC attach args. */
       ga = sc->sc_ga;
       ga.ga_ca = *ca;
       ga.ga_iot = sc->sc_ga.ga_iot;
       ga.ga_dmatag = sc->sc_ga.ga_dmatag;
       (*sc->sc_ga.ga_fix_args)(sc->sc_ga.ga_fix_args_cookie, &ga);

       return config_found(self, &ga, mbprint,
           CFARGS(.submatch = mbsubmatch));
}

int
gscmatch(device_t parent, cfdata_t cf, void *aux)
{
       struct gsc_attach_args *ga = aux;

       return !strcmp(ga->ga_name, "gsc");
}

void
gscattach(device_t parent, device_t self, void *aux)
{
       struct gsc_softc *sc = device_private(self);
       struct gsc_attach_args *ga = aux;
       struct cpu_info *ci = &cpus[0];

       sc->sc_dev = self;
       sc->sc_ga = *ga;

#ifdef USELEDS
       if (machine_ledaddr)
               aprint_normal(": %sleds", machine_ledword? "word" : "");
#endif

       aprint_normal("\n");

       /* Add the I/O subsystem's interrupt register. */
       ga->ga_ir->ir_name = device_xname(self);
       sc->sc_ih = hppa_intr_establish(IPL_NONE, NULL, ga->ga_ir,
           &ci->ci_ir, ga->ga_irq);

       ga->ga_ca.ca_nmodules = MAXMODBUS;
       ga->ga_ca.ca_hpabase = 0;
       pdc_scanbus(self, &ga->ga_ca, gsc_module_callback);
}

int
gscprint(void *aux, const char *pnp)
{

       return (UNCONF);
}