/*      $NetBSD: hd64461.c,v 1.26 2021/08/07 16:18:54 thorpej Exp $     */

/*-
 * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by UCHIYAMA Yasushi.
 *
 * 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: hd64461.c,v 1.26 2021/08/07 16:18:54 thorpej Exp $");

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

#include <machine/intr.h>
#include <machine/debug.h>

#include <hpcsh/dev/hd64461/hd64461reg.h>
#include <hpcsh/dev/hd64461/hd64461intcreg.h>
#include <hpcsh/dev/hd64461/hd64461var.h>

/* HD64461 modules. INTC, TIMER, POWER modules are included in hd64461if */
STATIC const struct hd64461_module {
        const char *name;
} hd64461_modules[] = {
        [HD64461_MODULE_VIDEO]          = { "hd64461video" },
        [HD64461_MODULE_PCMCIA]         = { "hd64461pcmcia" },
        [HD64461_MODULE_UART]           = { "hd64461uart" },
#if 0 /* there are no drivers, so don't bother */
        [HD64461_MODULE_GPIO]           = { "hd64461gpio" },
        [HD64461_MODULE_AFE]            = { "hd64461afe" },
        [HD64461_MODULE_FIR]            = { "hd64461fir" },
#endif
};

int use_afeck = 0;

STATIC int hd64461_match(device_t, cfdata_t, void *);
STATIC void hd64461_attach(device_t, device_t, void *);
STATIC int hd64461_print(void *, const char *);
#ifdef DEBUG
STATIC void hd64461_info(void);
#endif

CFATTACH_DECL_NEW(hd64461if, 0,
    hd64461_match, hd64461_attach, NULL, NULL);

STATIC int
hd64461_match(device_t parent, cfdata_t cf, void *aux)
{

        switch (cpu_product) {
        case CPU_PRODUCT_7709:
        case CPU_PRODUCT_7709A:
                break;

        default:
                return (0);     /* HD64461 only supports SH7709 interface */
        }

        if (strcmp("hd64461if", cf->cf_name) != 0)
                return (0);

        return (1);
}

STATIC void
hd64461_attach(device_t parent, device_t self, void *aux)
{
        struct hd64461_attach_args ha;
        const struct hd64461_module *module;
        uint16_t stbcr;
        int i;

        aprint_naive("\n");
        aprint_normal("\n");
#ifdef DEBUG
        if (bootverbose)
                hd64461_info();
#endif

        stbcr = hd64461_reg_read_2(HD64461_SYSSTBCR_REG16);

        /* we don't use TIMER */
        stbcr |= HD64461_SYSSTBCR_STM0ST | HD64461_SYSSTBCR_STM1ST;

        /* no drivers for FIR and AFE */
        stbcr |= HD64461_SYSSTBCR_SIRST | HD64461_SYSSTBCR_SAFEST;

        if (!use_afeck)
                stbcr |=
                    HD64461_SYSSTBCR_SAFECKE_IST | HD64461_SYSSTBCR_SAFECKE_OST;

        hd64461_reg_write_2(HD64461_SYSSTBCR_REG16, stbcr);


        /* Attach all sub modules */
        for (i = 0; i < __arraycount(hd64461_modules); ++i) {
                module = &hd64461_modules[i];
                if (module->name == NULL)
                        continue;
                ha.ha_module_id = i;
                config_found(self, &ha, hd64461_print, CFARGS_NONE);
        }

        /* XXX: TODO */
        if (!pmf_device_register(self, NULL, NULL))
                aprint_error_dev(self, "unable to establish power handler\n");
}

STATIC int
hd64461_print(void *aux, const char *pnp)
{
        struct hd64461_attach_args *ha = aux;

        if (pnp)
                aprint_normal("%s at %s",
                    hd64461_modules[ha->ha_module_id].name, pnp);

        return (UNCONF);
}


#ifdef DEBUG

STATIC void
hd64461_info(void)
{
        uint16_t r16;

        dbg_banner_function();

        /*
         * System
         */
        printf("STBCR (Standby Control Register)\n");
        r16 = hd64461_reg_read_2(HD64461_SYSSTBCR_REG16);
#define DBG_BITMASK_PRINT(r, m) dbg_bitmask_print(r, HD64461_SYSSTBCR_##m, #m)
        DBG_BITMASK_PRINT(r16, CKIO_STBY);
        DBG_BITMASK_PRINT(r16, SAFECKE_IST);
        DBG_BITMASK_PRINT(r16, SLCKE_IST);
        DBG_BITMASK_PRINT(r16, SAFECKE_OST);
        DBG_BITMASK_PRINT(r16, SLCKE_OST);
        DBG_BITMASK_PRINT(r16, SMIAST);
        DBG_BITMASK_PRINT(r16, SLCDST);
        DBG_BITMASK_PRINT(r16, SPC0ST);
        DBG_BITMASK_PRINT(r16, SPC1ST);
        DBG_BITMASK_PRINT(r16, SAFEST);
        DBG_BITMASK_PRINT(r16, STM0ST);
        DBG_BITMASK_PRINT(r16, STM1ST);
        DBG_BITMASK_PRINT(r16, SIRST);
        DBG_BITMASK_PRINT(r16, SURTSD);
#undef DBG_BITMASK_PRINT
        printf("\n");

        printf("SYSCR (System Configuration Register)\n");
        r16 = hd64461_reg_read_2(HD64461_SYSSYSCR_REG16);
#define DBG_BITMASK_PRINT(r, m) dbg_bitmask_print(r, HD64461_SYSSYSCR_##m, #m)
        DBG_BITMASK_PRINT(r16, SCPU_BUS_IGAT);
        DBG_BITMASK_PRINT(r16, SPTA_IR);
        DBG_BITMASK_PRINT(r16, SPTA_TM);
        DBG_BITMASK_PRINT(r16, SPTB_UR);
        DBG_BITMASK_PRINT(r16, WAIT_CTL_SEL);
        DBG_BITMASK_PRINT(r16, SMODE1);
        DBG_BITMASK_PRINT(r16, SMODE0);
#undef DBG_BITMASK_PRINT
        printf("\n");

        printf("SCPUCR (CPU Data Bus Control Register)\n");
        r16 = hd64461_reg_read_2(HD64461_SYSSCPUCR_REG16);
#define DBG_BITMASK_PRINT(r, m) dbg_bitmask_print(r, HD64461_SYSSCPUCR_##m, #m)
        DBG_BITMASK_PRINT(r16, SPDSTOF);
        DBG_BITMASK_PRINT(r16, SPDSTIG);
        DBG_BITMASK_PRINT(r16, SPCSTOF);
        DBG_BITMASK_PRINT(r16, SPCSTIG);
        DBG_BITMASK_PRINT(r16, SPBSTOF);
        DBG_BITMASK_PRINT(r16, SPBSTIG);
        DBG_BITMASK_PRINT(r16, SPASTOF);
        DBG_BITMASK_PRINT(r16, SPASTIG);
        DBG_BITMASK_PRINT(r16, SLCDSTIG);
        DBG_BITMASK_PRINT(r16, SCPU_CS56_EP);
        DBG_BITMASK_PRINT(r16, SCPU_CMD_EP);
        DBG_BITMASK_PRINT(r16, SCPU_ADDR_EP);
        DBG_BITMASK_PRINT(r16, SCPDPU);
        DBG_BITMASK_PRINT(r16, SCPU_A2319_EP);
#undef DBG_BITMASK_PRINT
        printf("\n");

        printf("\n");
        /*
         * INTC
         */
        printf("NIRR (Interrupt Request Register)\n");
        r16 = hd64461_reg_read_2(HD64461_INTCNIRR_REG16);
#define DBG_BITMASK_PRINT(r, m) dbg_bitmask_print(r, HD64461_INTCNIRR_##m, #m)
        DBG_BITMASK_PRINT(r16, PCC0R);
        DBG_BITMASK_PRINT(r16, PCC1R);
        DBG_BITMASK_PRINT(r16, AFER);
        DBG_BITMASK_PRINT(r16, GPIOR);
        DBG_BITMASK_PRINT(r16, TMU0R);
        DBG_BITMASK_PRINT(r16, TMU1R);
        DBG_BITMASK_PRINT(r16, IRDAR);
        DBG_BITMASK_PRINT(r16, UARTR);
#undef DBG_BITMASK_PRINT
        printf("\n");

        printf("NIMR (Interrupt Mask Register)\n");
        r16 = hd64461_reg_read_2(HD64461_INTCNIMR_REG16);
#define DBG_BITMASK_PRINT(r, m) dbg_bitmask_print(r, HD64461_INTCNIMR_##m, #m)
        DBG_BITMASK_PRINT(r16, PCC0M);
        DBG_BITMASK_PRINT(r16, PCC1M);
        DBG_BITMASK_PRINT(r16, AFEM);
        DBG_BITMASK_PRINT(r16, GPIOM);
        DBG_BITMASK_PRINT(r16, TMU0M);
        DBG_BITMASK_PRINT(r16, TMU1M);
        DBG_BITMASK_PRINT(r16, IRDAM);
        DBG_BITMASK_PRINT(r16, UARTM);
#undef DBG_BITMASK_PRINT
        printf("\n");

        dbg_banner_line();
}
#endif /* DEBUG */