/*      $NetBSD: ixp425_ixme.c,v 1.7 2021/08/07 16:18:46 thorpej Exp $  */

/*-
 * Copyright (c) 2006 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Steve C. Woodford.
 *
 * 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: ixp425_ixme.c,v 1.7 2021/08/07 16:18:46 thorpej Exp $");

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

#define _ARM32_BUS_DMA_PRIVATE
#include <sys/bus.h>

#include <arm/xscale/ixp425var.h>
#include <arm/xscale/ixp425_qmgr.h>
#include <arm/xscale/ixp425_ixmevar.h>

#include "locators.h"

static int      ixme_match(device_t, cfdata_t, void *);
static void     ixme_attach(device_t, device_t, void *);
static int      ixme_search(device_t, cfdata_t, const int *, void *);
static int      ixme_print(void *, const char *);

struct ixme_softc {
        struct arm32_dma_range sc_dr;
        struct arm32_bus_dma_tag sc_dt;
        void *sc_qmgr;
};

CFATTACH_DECL_NEW(ixme, sizeof(struct ixme_softc),
    ixme_match, ixme_attach, NULL, NULL);

static int
ixme_match(device_t parent, cfdata_t self, void *arg)
{

        return (1);
}

static void
ixme_attach(device_t parent, device_t self, void *arg)
{
        struct ixme_softc *sc = device_private(self);
        extern paddr_t physical_start, physical_end;

        aprint_naive("\n");
        aprint_normal(": IXP4xx MicroEngine Support\n");

        sc->sc_qmgr = ixpqmgr_init(&ixp425_bs_tag);
        if (sc->sc_qmgr == NULL) {
                panic("%s: ixme_attach: Failed to init Queue Manager",
                    device_xname(self));
        }

        sc->sc_dr.dr_sysbase = physical_start;
        sc->sc_dr.dr_busbase = 0;
        sc->sc_dr.dr_len = physical_end - physical_start;
        sc->sc_dt._ranges = &sc->sc_dr;
        sc->sc_dt._nranges = 1;

        sc->sc_dt._dmamap_create = _bus_dmamap_create;
        sc->sc_dt._dmamap_destroy = _bus_dmamap_destroy;
        sc->sc_dt._dmamap_load = _bus_dmamap_load;
        sc->sc_dt._dmamap_load_mbuf = _bus_dmamap_load_mbuf;
        sc->sc_dt._dmamap_load_uio = _bus_dmamap_load_uio;
        sc->sc_dt._dmamap_load_raw = _bus_dmamap_load_raw;
        sc->sc_dt._dmamap_unload = _bus_dmamap_unload;
        sc->sc_dt._dmamap_sync_pre = _bus_dmamap_sync;
        sc->sc_dt._dmamap_sync_post = NULL;

        sc->sc_dt._dmamem_alloc = _bus_dmamem_alloc;
        sc->sc_dt._dmamem_free = _bus_dmamem_free;
        sc->sc_dt._dmamem_map = _bus_dmamem_map;
        sc->sc_dt._dmamem_unmap = _bus_dmamem_unmap;
        sc->sc_dt._dmamem_mmap = _bus_dmamem_mmap;

        sc->sc_dt._dmatag_subregion = _bus_dmatag_subregion;
        sc->sc_dt._dmatag_destroy = _bus_dmatag_destroy;

        config_search(self, NULL,
            CFARGS(.search = ixme_search));
}

static int
ixme_search(device_t parent, cfdata_t cf, const int *ldesc, void *arg)
{
        struct ixme_softc *sc = device_private(parent);
        struct ixme_attach_args ixa;

        if (cf->cf_loc[IXMECF_NPE] < 0 || cf->cf_loc[IXMECF_NPE] > 2)
                return (0);

        ixa.ixa_iot = &ixp425_bs_tag;
        ixa.ixa_dt = &sc->sc_dt;
        ixa.ixa_npe = cf->cf_loc[IXMECF_NPE];

        if (config_probe(parent, cf, &ixa)) {
                config_attach(parent, cf, &ixa, ixme_print, CFARGS_NONE);
                return (1);
        }

        return (0);
}

static int
ixme_print(void *arg, const char *name)
{
        struct ixme_attach_args *ixa = arg;

        aprint_normal(" NPE-%c", 'A' + ixa->ixa_npe);

        return (UNCONF);
}