/*      $NetBSD: imx51_axi.c,v 1.10 2024/02/07 04:20:26 msaitoh Exp $   */

/*-
 * Copyright (c) 2010 SHIMIZU Ryo
 * 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.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: imx51_axi.c,v 1.10 2024/02/07 04:20:26 msaitoh Exp $");

#include <sys/param.h>
#include <sys/bus.h>
#include <sys/device.h>

#include <uvm/uvm_extern.h>

#include <arm/imx/imx51reg.h>
#include <arm/imx/imx51var.h>

#include "bus_dma_generic.h"
#include "locators.h"

struct axi_softc {
        device_t sc_dev;
        bus_space_tag_t sc_iot;
        bus_dma_tag_t sc_dmat;
};

static int axi_match(device_t, struct cfdata *, void *);
static void axi_attach(device_t, device_t, void *);
static int axi_search(device_t, struct cfdata *, const int *, void *);
static int axi_critical_search(device_t, struct cfdata *, const int *, void *);
static int axi_search(device_t, struct cfdata *, const int *, void *);
static int axi_print(void *, const char *);

CFATTACH_DECL_NEW(axi, sizeof(struct axi_softc),
    axi_match, axi_attach, NULL, NULL);

/* ARGSUSED */
static int
axi_match(device_t parent __unused, struct cfdata *match __unused,
    void *aux __unused)
{
        return 1;
}

/* ARGSUSED */
static void
axi_attach(device_t parent __unused, device_t self, void *aux __unused)
{
        struct axi_softc *sc;
        struct axi_attach_args aa;

        aprint_normal(": Advanced eXtensible Interface\n");
        aprint_naive("\n");

        sc = device_private(self);
        sc->sc_iot = &armv7_generic_bs_tag;
#if NBUS_DMA_GENERIC > 0
        sc->sc_dmat = &arm_generic_dma_tag;
#else
        sc->sc_dmat = 0;
#endif

        aa.aa_name = "axi";
        aa.aa_iot = sc->sc_iot;
        aa.aa_dmat = sc->sc_dmat;
        config_search(self, &aa,
            CFARGS(.search = axi_critical_search));
        config_search(self, &aa,
            CFARGS(.search = axi_search));
}

/* ARGSUSED */
static int
axi_critical_search(device_t parent, struct cfdata *cf,
    const int *ldesc __unused, void *aux)
{
        struct axi_attach_args *aa;

        aa = aux;

        if ((strcmp(cf->cf_name, "tzic") != 0) &&
            (strcmp(cf->cf_name, "imxuart") != 0) &&
            (strcmp(cf->cf_name, "imxccm") != 0) &&
            (strcmp(cf->cf_name, "imxgpio") != 0))
                return 0;

        aa->aa_name = cf->cf_name;
        aa->aa_addr = cf->cf_loc[AXICF_ADDR];
        aa->aa_size = cf->cf_loc[AXICF_SIZE];
        aa->aa_irq = cf->cf_loc[AXICF_IRQ];
        aa->aa_irqbase = cf->cf_loc[AXICF_IRQBASE];

        if (config_probe(parent, cf, aux))
                config_attach(parent, cf, aux, axi_print, CFARGS_NONE);

        return 0;
}


/* ARGSUSED */
static int
axi_search(device_t parent, struct cfdata *cf, const int *ldesc __unused,
    void *aux)
{
        struct axi_attach_args *aa;

        aa = aux;

        aa->aa_addr = cf->cf_loc[AXICF_ADDR];
        aa->aa_size = cf->cf_loc[AXICF_SIZE];
        aa->aa_irq = cf->cf_loc[AXICF_IRQ];
        aa->aa_irqbase = cf->cf_loc[AXICF_IRQBASE];

        if (config_probe(parent, cf, aux))
                config_attach(parent, cf, aux, axi_print, CFARGS_NONE);

        return 0;
}

/* ARGSUSED */
static int
axi_print(void *aux, const char *name __unused)
{
        struct axi_attach_args *aa = (struct axi_attach_args *)aux;

        if (aa->aa_addr != AXICF_ADDR_DEFAULT) {
                aprint_normal(" addr 0x%lx", aa->aa_addr);
                if (aa->aa_size > AXICF_SIZE_DEFAULT)
                        aprint_normal("-0x%lx",
                            aa->aa_addr + aa->aa_size-1);
        }
        if (aa->aa_irq != AXICF_IRQ_DEFAULT)
                aprint_normal(" intr %d", aa->aa_irq);
        if (aa->aa_irqbase != AXICF_IRQBASE_DEFAULT)
                aprint_normal(" irqbase %d", aa->aa_irqbase);

        return (UNCONF);
}