/*      $NetBSD: ipaq_pcic.c,v 1.24 2023/12/20 14:50:02 thorpej Exp $        */

/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Ichiro FUKUHARA ([email protected]).
*
* 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: ipaq_pcic.c,v 1.24 2023/12/20 14:50:02 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/bus.h>

#include <dev/pcmcia/pcmciachip.h>
#include <dev/pcmcia/pcmciavar.h>

#include <hpcarm/dev/ipaq_saipvar.h>
#include <hpcarm/dev/ipaq_pcicreg.h>
#include <hpcarm/dev/ipaq_gpioreg.h>

#include <arm/sa11x0/sa11x0_gpioreg.h>
#include <arm/sa11x0/sa11x0_var.h>
#include <arm/sa11x0/sa11xx_pcicvar.h>

#include "ipaqpcic.h"

static  int     ipaqpcic_match(device_t, cfdata_t, void *);
static  void    ipaqpcic_attach(device_t, device_t, void *);
static  int     ipaqpcic_print(void *, const char *);

static  int     ipaqpcic_read(struct sapcic_socket *, int);
static  void    ipaqpcic_write(struct sapcic_socket *, int, int);
static  void    ipaqpcic_set_power(struct sapcic_socket *, int);
static  void    ipaqpcic_clear_intr(int);
static  void    *ipaqpcic_intr_establish(struct sapcic_socket *, int,
                                      int (*)(void *), void *);
static  void    ipaqpcic_intr_disestablish(struct sapcic_socket *, void *);

struct ipaqpcic_softc {
       struct sapcic_softc     sc_pc;
       bus_space_handle_t      sc_ioh;
       struct ipaq_softc       *sc_parent;
       struct sapcic_socket    sc_socket[2];
};

static  void    ipaqpcic_init(struct ipaqpcic_softc *);

static struct sapcic_tag ipaqpcic_functions = {
       ipaqpcic_read,
       ipaqpcic_write,
       ipaqpcic_set_power,
       ipaqpcic_clear_intr,
       ipaqpcic_intr_establish,
       ipaqpcic_intr_disestablish
};

CFATTACH_DECL_NEW(ipaqpcic, sizeof(struct ipaqpcic_softc),
   ipaqpcic_match, ipaqpcic_attach, NULL, NULL);

static int
ipaqpcic_match(device_t parent, cfdata_t cf, void *aux)
{
       return (1);
}

static void
ipaqpcic_attach(device_t parent, device_t self, void *aux)
{
       int i;
       struct pcmciabus_attach_args paa;
       struct ipaqpcic_softc *sc = device_private(self);
       struct ipaq_softc *psc = device_private(parent);

       aprint_normal("\n");

       sc->sc_pc.sc_dev = self;
       sc->sc_pc.sc_iot = psc->sc_iot;
       sc->sc_ioh = psc->sc_ioh;
       sc->sc_parent = psc;

       ipaqpcic_init(sc);

       for(i = 0; i < 2; i++) {
               sc->sc_socket[i].sc = (struct sapcic_softc *)sc;
               sc->sc_socket[i].socket = i;
               sc->sc_socket[i].pcictag_cookie = psc;
               sc->sc_socket[i].pcictag = &ipaqpcic_functions;
               sc->sc_socket[i].event_thread = NULL;
               sc->sc_socket[i].event = 0;
               sc->sc_socket[i].laststatus = SAPCIC_CARD_INVALID;
               sc->sc_socket[i].shutdown = 0;

               paa.paa_busname = "pcmcia";
               paa.pct = (pcmcia_chipset_tag_t)&sa11x0_pcmcia_functions;
               paa.pch = (pcmcia_chipset_handle_t)&sc->sc_socket[i];

               sc->sc_socket[i].pcmcia =
                   config_found(sc->sc_pc.sc_dev, &paa, ipaqpcic_print,
                                CFARGS_NONE);

               sa11x0_intr_establish((sa11x0_chipset_tag_t)psc,
                           i ? IRQ_CD1 : IRQ_CD0,
                           1, IPL_BIO, sapcic_intr,
                           &sc->sc_socket[i]);

               /* schedule kthread creation */
               sapcic_kthread_create(&sc->sc_socket[i]);

#if 0 /* XXX */
               /* establish_intr should be after creating the kthread */
               config_interrupt(&sc->sc_socket[i], ipaqpcic_config_intr);
#endif
       }
}

static int
ipaqpcic_print(void *aux, const char *name)
{
       return (UNCONF);
}

static void
ipaqpcic_init(struct ipaqpcic_softc *sc)
{
       int cr;

       /* All those are inputs */
       cr = bus_space_read_4(sc->sc_pc.sc_iot, sc->sc_parent->sc_gpioh, SAGPIO_PDR);
       cr &= ~(GPIO_H3600_PCMCIA_CD0 | GPIO_H3600_PCMCIA_CD1 | GPIO_H3600_PCMCIA_IRQ0 |
               GPIO_H3600_PCMCIA_IRQ1);
       bus_space_write_4(sc->sc_pc.sc_iot, sc->sc_parent->sc_gpioh, SAGPIO_PDR, cr);

       sc->sc_parent->ipaq_egpio |=
               EGPIO_H3600_OPT_NVRAM_ON | EGPIO_H3600_OPT_ON ;
       sc->sc_parent->ipaq_egpio &=
               ~(EGPIO_H3600_CARD_RESET | EGPIO_H3600_OPT_RESET);
       bus_space_write_2(sc->sc_pc.sc_iot, sc->sc_parent->sc_egpioh,
                         0, sc->sc_parent->ipaq_egpio);
}

static int
ipaqpcic_read(struct sapcic_socket *so, int reg)
{
       int cr, bit;
       struct ipaqpcic_softc *sc = (struct ipaqpcic_softc *)so->sc;

       cr = bus_space_read_4(sc->sc_pc.sc_iot, sc->sc_parent->sc_gpioh, SAGPIO_PLR);

       switch (reg) {
       case SAPCIC_STATUS_CARD:
               bit = (so->socket ? GPIO_H3600_PCMCIA_CD0 :
                               GPIO_H3600_PCMCIA_CD1) & cr;
               if (!bit)
                       return SAPCIC_CARD_INVALID;
               else
                       return SAPCIC_CARD_VALID;
       case SAPCIC_STATUS_VS1:
       case SAPCIC_STATUS_VS2:
       case SAPCIC_STATUS_READY:
               bit = (so->socket ? GPIO_H3600_PCMCIA_IRQ0:
                               GPIO_H3600_PCMCIA_IRQ1);
               return (bit & cr);
       default:
               panic("ipaqpcic_read: bogus register");
       }
}

static void
ipaqpcic_write(struct sapcic_socket *so, int reg, int arg)
{
       int s;
       struct ipaqpcic_softc *sc = (struct ipaqpcic_softc *)so->sc;

       s = splhigh();
       switch (reg) {
       case SAPCIC_CONTROL_RESET:
               sc->sc_parent->ipaq_egpio |= EGPIO_H3600_CARD_RESET;
               break;
       case SAPCIC_CONTROL_LINEENABLE:
       case SAPCIC_CONTROL_WAITENABLE:
       case SAPCIC_CONTROL_POWERSELECT:
               break;

       default:
               splx(s);
               panic("ipaqpcic_write: bogus register");
       }
       bus_space_write_2(sc->sc_pc.sc_iot, sc->sc_parent->sc_egpioh, 0,
                         sc->sc_parent->ipaq_egpio);
       splx(s);
}

static void
ipaqpcic_set_power(struct sapcic_socket *so, int arg)
{
       int s;
       struct ipaqpcic_softc *sc = (struct ipaqpcic_softc *)so->sc;

       s = splbio();
       switch (arg) {
       case SAPCIC_POWER_OFF:
               sc->sc_parent->ipaq_egpio &=
                       ~(EGPIO_H3600_OPT_NVRAM_ON | EGPIO_H3600_OPT_ON);
               break;
       case SAPCIC_POWER_3V:
       case SAPCIC_POWER_5V:
               sc->sc_parent->ipaq_egpio |=
                       EGPIO_H3600_OPT_NVRAM_ON | EGPIO_H3600_OPT_ON;
               break;
       default:
               panic("ipaqpcic_set_power: bogus arg");
       }
       bus_space_write_2(sc->sc_pc.sc_iot, sc->sc_parent->sc_egpioh,
                         0, sc->sc_parent->ipaq_egpio);
       splx(s);
}

static void
ipaqpcic_clear_intr(int arg)
{
}

static void *
ipaqpcic_intr_establish(struct sapcic_socket *so, int level,
                       int (*ih_fun)(void *), void *ih_arg)
{
       int irq;

       irq = so->socket ? IRQ_IRQ0 : IRQ_IRQ1;
       return (sa11x0_intr_establish((sa11x0_chipset_tag_t)so->pcictag_cookie,
                                   irq-16, 1, level, ih_fun, ih_arg));
}

static void
ipaqpcic_intr_disestablish(struct sapcic_socket *so, void *ih)
{
       sa11x0_intr_disestablish((sa11x0_chipset_tag_t)so->pcictag_cookie, ih);
}

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