/* $NetBSD: mainbus.c,v 1.4 2024/06/18 13:35:26 rin Exp $ */

/*
* Copyright (c) 2002, 2024 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson ([email protected]) at Sandburst Corp.
*
* 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: mainbus.c,v 1.4 2024/06/18 13:35:26 rin Exp $");

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

#include <sys/bus.h>
#include <machine/wii.h>
#include <machine/pio.h>
#include <arch/evbppc/wii/dev/mainbus.h>

#include "locators.h"
#include "mainbus.h"

extern struct powerpc_bus_space wii_mem_tag;
extern struct powerpc_bus_dma_tag wii_bus_dma_tag;

int     mainbus_match(device_t, cfdata_t, void *);
void    mainbus_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(mainbus, 0,
   mainbus_match, mainbus_attach, NULL, NULL);

int
mainbus_match(device_t parent, cfdata_t match, void *aux)
{
       return 1;
}

static int
mainbus_print(void *aux, const char *pnp)
{
       struct mainbus_attach_args *mba = aux;

       if (pnp) {
               aprint_normal("%s at %s", mba->maa_name, pnp);
       }
       if (mba->maa_addr != MAINBUSCF_ADDR_DEFAULT) {
               aprint_normal(" addr 0x%08lx", mba->maa_addr);
       }
       if (mba->maa_irq != MAINBUSCF_IRQ_DEFAULT) {
               aprint_normal(" irq %d", mba->maa_irq);
       }
       return UNCONF;
}

void
mainbus_attach(device_t parent, device_t self, void *aux)
{
       struct mainbus_attach_args maa;

       aprint_normal(": Nintendo Wii\n");

       /*
        * GCC 12 blames pointer reference to 0-th page, [0, 0xfff].
        * XXX map to higher address as done for, e.g., arm by devmap?
        */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Warray-bounds"
       aprint_debug_dev(self, "mem1 0x%x, mem2 0x%x\n",
           in32(GLOBAL_MEM1_SIZE), in32(GLOBAL_MEM2_SIZE));
       aprint_debug_dev(self, "cpu %u, bus %u, vidmode %u\n",
           in32(GLOBAL_CPU_SPEED), in32(GLOBAL_BUS_SPEED),
           in32(GLOBAL_CUR_VID_MODE));
#pragma GCC diagnostic pop

       aprint_debug_dev(self, "ios version 0x%x\n", in32(GLOBAL_IOS_VERSION));

       maa.maa_bst = &wii_mem_tag;
       maa.maa_dmat = &wii_bus_dma_tag;

       maa.maa_name = "cpu";
       maa.maa_addr = MAINBUSCF_ADDR_DEFAULT;
       maa.maa_irq = MAINBUSCF_IRQ_DEFAULT;
       config_found(self, &maa, mainbus_print, CFARGS_NONE);

       maa.maa_name = "genfb";
       maa.maa_addr = VI_BASE;
       maa.maa_irq = MAINBUSCF_IRQ_DEFAULT;
       config_found(self, &maa, mainbus_print, CFARGS_NONE);

       maa.maa_name = "exi";
       maa.maa_addr = EXI_BASE;
       maa.maa_irq = PI_IRQ_EXI;
       config_found(self, &maa, mainbus_print, CFARGS_NONE);

       maa.maa_name = "hollywood";
       maa.maa_addr = MAINBUSCF_ADDR_DEFAULT;
       maa.maa_irq = PI_IRQ_HOLLYWOOD;
       config_found(self, &maa, mainbus_print, CFARGS_NONE);

       maa.maa_name = "bwai";
       maa.maa_addr = AI_BASE;
       maa.maa_irq = PI_IRQ_AI;
       config_found(self, &maa, mainbus_print, CFARGS_NONE);

       maa.maa_name = "bwdsp";
       maa.maa_addr = DSP_BASE;
       maa.maa_irq = PI_IRQ_DSP;
       config_found(self, &maa, mainbus_print, CFARGS_NONE);
}

static int      cpu_match(device_t, cfdata_t, void *);
static void     cpu_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(cpu, 0,
   cpu_match, cpu_attach, NULL, NULL);

extern struct cfdriver cpu_cd;

int
cpu_match(device_t parent, cfdata_t cf, void *aux)
{
       struct mainbus_attach_args *maa = aux;

       if (strcmp(maa->maa_name, cpu_cd.cd_name) != 0) {
               return 0;
       }

       if (cpu_info[0].ci_dev != NULL) {
               return 0;
       }

       return 1;
}

void
cpu_attach(device_t parent, device_t self, void *aux)
{
       cpu_attach_common(self, 0);
}