256 lines
7.9 KiB
C
256 lines
7.9 KiB
C
/* $NetBSD: sa11x0.c,v 1.14 2003/07/15 00:24:50 lukem Exp $ */
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/*-
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* Copyright (c) 2001, The NetBSD Foundation, Inc. All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by IWAMOTO Toshihiro and Ichiro FUKUHARA.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*/
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/*-
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* Copyright (c) 1999
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* Shin Takemura and PocketBSD Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the PocketBSD project
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* and its contributors.
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* 4. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/reboot.h>
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#include <sys/malloc.h>
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#include <sys/bus.h>
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#include <sys/interrupt.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#include <machine/cpu.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <arm/sa11x0/sa11x0_reg.h>
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#include <arm/sa11x0/sa11x0_var.h>
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#include <arm/sa11x0/sa11x0_dmacreg.h>
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#include <arm/sa11x0/sa11x0_ppcreg.h>
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#include <arm/sa11x0/sa11x0_gpioreg.h>
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#include <machine/bus.h>
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extern void sa11x0_activateirqs(void);
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static struct resource *sa1110_alloc_resource(device_t, device_t, int, int *,
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u_long, u_long, u_long, u_int);
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static int sa1110_activate_resource(device_t, device_t, int, int,
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struct resource *);
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static int sa1110_setup_intr(device_t, device_t, struct resource *, int,
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driver_filter_t *, driver_intr_t *, void *, void **);
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struct sa11x0_softc *sa11x0_softc; /* There can be only one. */
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static int
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sa1110_setup_intr(device_t dev, device_t child,
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struct resource *ires, int flags, driver_filter_t *filt,
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driver_intr_t *intr, void *arg, void **cookiep)
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{
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int saved_cpsr;
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if (flags & INTR_TYPE_TTY)
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rman_set_start(ires, 15);
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else if (flags & INTR_TYPE_CLK) {
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if (rman_get_start(ires) == 0)
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rman_set_start(ires, 26);
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else
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rman_set_start(ires, 27);
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}
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saved_cpsr = SetCPSR(I32_bit, I32_bit);
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SetCPSR(I32_bit, saved_cpsr & I32_bit);
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BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, filt,
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intr, arg, cookiep);
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return (0);
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}
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static struct resource *
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sa1110_alloc_resource(device_t bus, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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struct resource *res;
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res = rman_reserve_resource(&sa11x0_softc->sa11x0_rman, *rid, *rid,
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count, flags, child);
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if (res != NULL)
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rman_set_rid(res, *rid);
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return (res);
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}
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static int
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sa1110_activate_resource(device_t bus, device_t child, int type, int rid,
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struct resource *r)
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{
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return (0);
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}
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/* prototypes */
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static int sa11x0_probe(device_t);
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static int sa11x0_attach(device_t);
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static void sa11x0_identify(driver_t *, device_t);
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extern vm_offset_t saipic_base;
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int
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sa11x0_probe(device_t dev)
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{
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return 0;
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}
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void
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sa11x0_identify(driver_t *driver, device_t parent)
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{
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BUS_ADD_CHILD(parent, 0, "saip", 0);
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}
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int
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sa11x0_attach(device_t dev)
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{
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struct sa11x0_softc *sc = device_get_softc(dev);
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int unit = device_get_unit(dev);
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sc->sc_iot = &sa11x0_bs_tag;
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sa11x0_softc = sc;
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/* Map the SAIP */
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if (bus_space_map(sc->sc_iot, SAIPIC_BASE, SAIPIC_NPORTS,
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0, &sc->sc_ioh))
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panic("saip%d: Cannot map registers", unit);
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saipic_base = sc->sc_ioh;
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/* Map the GPIO registers */
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if (bus_space_map(sc->sc_iot, SAGPIO_BASE, SAGPIO_NPORTS,
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0, &sc->sc_gpioh))
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panic("saip%d: unable to map GPIO registers", unit);
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bus_space_write_4(sc->sc_iot, sc->sc_gpioh, SAGPIO_EDR, 0xffffffff);
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/* Map the PPC registers */
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if (bus_space_map(sc->sc_iot, SAPPC_BASE, SAPPC_NPORTS,
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0, &sc->sc_ppch))
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panic("saip%d: unable to map PPC registers", unit);
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#if 0
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/* Map the DMA controller registers */
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if (bus_space_map(sc->sc_iot, SADMAC_BASE, SADMAC_NPORTS,
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0, &sc->sc_dmach))
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panic("saip%d: unable to map DMAC registers", unit);
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#endif
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/* Map the reset controller registers */
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if (bus_space_map(sc->sc_iot, SARCR_BASE, PAGE_SIZE,
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0, &sc->sc_reseth))
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panic("saip%d: unable to map reset registers", unit);
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printf("\n");
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/*
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* Mask all interrupts.
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* They are later unmasked at each device's attach routine.
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*/
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_MR, 0);
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/* Route all bits to IRQ */
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_LR, 0);
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/* Exit idle mode only when unmasked intr is received */
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, SAIPIC_CR, 1);
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#if 0
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/* disable all DMAC channels */
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bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR0_CLR, 1);
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bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR1_CLR, 1);
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bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR2_CLR, 1);
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bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR3_CLR, 1);
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bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR4_CLR, 1);
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bus_space_write_4(sc->sc_iot, sc->sc_dmach, SADMAC_DCR5_CLR, 1);
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#endif
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/*
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* XXX this is probably a bad place, but intr bit shouldn't be
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* XXX enabled before intr mask is set.
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* XXX Having sane imask[] suffice??
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*/
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#if 0
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SetCPSR(I32_bit, 0);
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#endif
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/*
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* Attach each devices
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*/
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sc->sa11x0_rman.rm_type = RMAN_ARRAY;
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sc->sa11x0_rman.rm_descr = "SA11x0 IRQs";
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if (rman_init(&sc->sa11x0_rman) != 0 ||
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rman_manage_region(&sc->sa11x0_rman, 0, 32) != 0)
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panic("sa11x0_attach: failed to set up rman");
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device_add_child(dev, "uart", 0);
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device_add_child(dev, "saost", 0);
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bus_generic_probe(dev);
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bus_generic_attach(dev);
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sa11x0_activateirqs();
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return (0);
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}
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static device_method_t saip_methods[] = {
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DEVMETHOD(device_probe, sa11x0_probe),
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DEVMETHOD(device_attach, sa11x0_attach),
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DEVMETHOD(device_identify, sa11x0_identify),
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DEVMETHOD(bus_alloc_resource, sa1110_alloc_resource),
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DEVMETHOD(bus_activate_resource, sa1110_activate_resource),
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DEVMETHOD(bus_setup_intr, sa1110_setup_intr),
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{0, 0},
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};
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static driver_t saip_driver = {
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"saip",
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saip_methods,
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sizeof(struct sa11x0_softc),
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};
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static devclass_t saip_devclass;
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DRIVER_MODULE(saip, nexus, saip_driver, saip_devclass, 0, 0);
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