xref: /src/sys/arch/arm/sa11x0/sa11x0.c

/*	$NetBSD: sa11x0.c,v 1.29 2021/08/07 16:18:45 thorpej Exp $	*/

/*-
 * Copyright (c) 2001, The NetBSD Foundation, Inc.  All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by IWAMOTO Toshihiro and Ichiro FUKUHARA.
 *
 * 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.
 */
/*-
 * Copyright (c) 1999
 *         Shin Takemura and PocketBSD Project. 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the PocketBSD project
 *	and its contributors.
 * 4. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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: sa11x0.c,v 1.29 2021/08/07 16:18:45 thorpej Exp $");

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

#include <uvm/uvm_extern.h>

#include <machine/cpu.h>
#include <sys/bus.h>

#include <arm/arm32/psl.h>
#include <arm/arm32/machdep.h>
#include <arm/mainbus/mainbus.h>
#include <arm/sa11x0/sa11x0_reg.h>
#include <arm/sa11x0/sa11x0_var.h>
#include <arm/sa11x0/sa11x0_dmacreg.h>
#include <arm/sa11x0/sa11x0_ppcreg.h>
#include <arm/sa11x0/sa11x0_gpioreg.h>

#include "locators.h"

/* prototypes */
static int	sa11x0_match(device_t, cfdata_t, void *);
static void	sa11x0_attach(device_t, device_t, void *);
static int 	sa11x0_search(device_t, cfdata_t, const int *, void *);
static int	sa11x0_print(void *, const char *);

/* attach structures */
CFATTACH_DECL_NEW(saip, sizeof(struct sa11x0_softc),
    sa11x0_match, sa11x0_attach, NULL, NULL);

extern struct bus_space sa11x0_bs_tag;
extern vaddr_t saipic_base;

/*
 * int sa11x0_print(void *aux, const char *name)
 * print configuration info for children
 */

static int
sa11x0_print(void *aux, const char *name)
{
	struct sa11x0_attach_args *sa = (struct sa11x0_attach_args*)aux;

	if (sa->sa_size)
                aprint_normal(" addr 0x%lx", sa->sa_addr);
        if (sa->sa_size > 1)
                aprint_normal("-0x%lx", sa->sa_addr + sa->sa_size - 1);
        if (sa->sa_intr > 1)
                aprint_normal(" intr %d", sa->sa_intr);
	if (sa->sa_gpio != -1)
		aprint_normal(" gpio %d", sa->sa_gpio);

        return UNCONF;
}

int
sa11x0_match(device_t parent, cfdata_t match, void *aux)
{

	return 1;
}

void
sa11x0_attach(device_t parent, device_t self, void *aux)
{
	struct sa11x0_softc *sc = device_private(self);

	sc->sc_dev = self;
	sc->sc_iot = &sa11x0_bs_tag;

	/* Map the SAIP */
	if (bus_space_map(sc->sc_iot, SAIPIC_BASE, SAIPIC_NPORTS,
			0, &sc->sc_ioh))
		panic("%s: Cannot map registers", device_xname(self));
	saipic_base = sc->sc_ioh;

	/* Map the GPIO registers */
	if (bus_space_map(sc->sc_iot, SAGPIO_BASE, SAGPIO_NPORTS,
			  0, &sc->sc_gpioh))
		panic("%s: unable to map GPIO registers", device_xname(self));
	bus_space_write_4(sc->sc_iot, sc->sc_gpioh, SAGPIO_EDR, 0xffffffff);

	/* Map the PPC registers */
	if (bus_space_map(sc->sc_iot, SAPPC_BASE, SAPPC_NPORTS,
			  0, &sc->sc_ppch))
		panic("%s: unable to map PPC registers", device_xname(self));

	/* Map the DMA controller registers */
	if (bus_space_map(sc->sc_iot, SADMAC_BASE, SADMAC_NPORTS,
			  0, &sc->sc_dmach))
		panic("%s: unable to map DMAC registers", device_xname(self));

	/* Map the reset controller registers */
	if (bus_space_map(sc->sc_iot, SARCR_BASE, PAGE_SIZE,
			  0, &sc->sc_reseth))
		panic("%s: unable to map reset registers", device_xname(self));

	printf("\n");

	/*
	 *  Mask all interrupts.
	 *  They are later unmasked at each device's attach routine.
	 */
	bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_MR, 0);

	/* Route all bits to IRQ */
	bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_LR, 0);

	/* Exit idle mode only when unmasked intr is received */
	bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_CR, 1);

	/* disable all DMAC channels */
	bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR0_CLR, 1);
	bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR1_CLR, 1);
	bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR2_CLR, 1);
	bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR3_CLR, 1);
	bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR4_CLR, 1);
	bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR5_CLR, 1);

	/* Make sure to init spl masks, note we set the mask to 0 above */
	set_spl_masks();

	SetCPSR(I32_bit, 0);

	/*
	 *  Attach each devices
	 */
	config_search(self, NULL,
	    CFARGS(.search = sa11x0_search));
}

int
sa11x0_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
{
	struct sa11x0_softc *sc = device_private(parent);
	struct sa11x0_attach_args sa;

	sa.sa_sc = sc;
	sa.sa_iot = sc->sc_iot;
	sa.sa_name = cf->cf_name;
	sa.sa_addr = cf->cf_loc[SAIPCF_ADDR];
	sa.sa_size = cf->cf_loc[SAIPCF_SIZE];
	sa.sa_intr = cf->cf_loc[SAIPCF_INTR];
	sa.sa_gpio = cf->cf_loc[SAIPCF_GPIO];

        if (config_probe(parent, cf, &sa))
                config_attach(parent, cf, &sa, sa11x0_print, CFARGS_NONE);

        return 0;
}