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50b3024887
struct bus_space and update all relevant places.
502 lines
13 KiB
C
502 lines
13 KiB
C
/* $NetBSD: obio.c,v 1.11 2003/07/15 00:25:05 lukem Exp $ */
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/*-
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* Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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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 for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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/interrupt.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/malloc.h>
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#include <machine/bus.h>
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#include <mips/adm5120/adm5120reg.h>
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#include <mips/adm5120/obiovar.h>
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/* MIPS HW interrupts of IRQ/FIQ respectively */
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#define ADM5120_INTR 0
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#define ADM5120_FAST_INTR 1
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/* Interrupt levels */
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#define INTR_IRQ 0
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#define INTR_FIQ 1
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int irq_priorities[NIRQS] = {
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INTR_IRQ, /* flash */
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INTR_FIQ, /* uart0 */
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INTR_FIQ, /* uart1 */
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INTR_IRQ, /* ahci */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* admsw */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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INTR_IRQ, /* unknown */
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};
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#define REG_READ(o) *((volatile uint32_t *)MIPS_PHYS_TO_KSEG1(ADM5120_BASE_ICU + (o)))
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#define REG_WRITE(o,v) (REG_READ(o)) = (v)
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static int obio_activate_resource(device_t, device_t, int, int,
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struct resource *);
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static device_t obio_add_child(device_t, int, const char *, int);
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static struct resource *
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obio_alloc_resource(device_t, device_t, int, int *, u_long,
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u_long, u_long, u_int);
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static int obio_attach(device_t);
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static int obio_deactivate_resource(device_t, device_t, int, int,
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struct resource *);
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static struct resource_list *
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obio_get_resource_list(device_t, device_t);
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static void obio_hinted_child(device_t, const char *, int);
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static int obio_intr(void *);
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static int obio_probe(device_t);
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static int obio_release_resource(device_t, device_t, int, int,
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struct resource *);
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static int obio_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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static int obio_teardown_intr(device_t, device_t, struct resource *,
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void *);
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static int
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obio_probe(device_t dev)
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{
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return (0);
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}
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static int
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obio_attach(device_t dev)
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{
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struct obio_softc *sc = device_get_softc(dev);
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int rid;
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sc->oba_mem_rman.rm_type = RMAN_ARRAY;
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sc->oba_mem_rman.rm_descr = "OBIO memeory";
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if (rman_init(&sc->oba_mem_rman) != 0 ||
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rman_manage_region(&sc->oba_mem_rman, OBIO_MEM_START,
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OBIO_MEM_START + OBIO_MEM_SIZE) != 0)
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panic("obio_attach: failed to set up I/O rman");
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sc->oba_irq_rman.rm_type = RMAN_ARRAY;
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sc->oba_irq_rman.rm_descr = "OBIO IRQ";
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if (rman_init(&sc->oba_irq_rman) != 0 ||
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rman_manage_region(&sc->oba_irq_rman, 0, NIRQS-1) != 0)
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panic("obio_attach: failed to set up IRQ rman");
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/* Hook up our interrupt handler. */
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if ((sc->sc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
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ADM5120_INTR, ADM5120_INTR, 1,
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RF_SHAREABLE | RF_ACTIVE)) == NULL) {
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device_printf(dev, "unable to allocate IRQ resource\n");
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return (ENXIO);
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}
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if ((bus_setup_intr(dev, sc->sc_irq, INTR_TYPE_MISC, obio_intr, NULL,
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sc, &sc->sc_ih))) {
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device_printf(dev,
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"WARNING: unable to register interrupt handler\n");
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return (ENXIO);
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}
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/* Hook up our FAST interrupt handler. */
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if ((sc->sc_fast_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
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ADM5120_FAST_INTR, ADM5120_FAST_INTR, 1,
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RF_SHAREABLE | RF_ACTIVE)) == NULL) {
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device_printf(dev, "unable to allocate IRQ resource\n");
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return (ENXIO);
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}
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if ((bus_setup_intr(dev, sc->sc_fast_irq, INTR_TYPE_MISC, obio_intr,
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NULL, sc, &sc->sc_fast_ih))) {
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device_printf(dev,
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"WARNING: unable to register interrupt handler\n");
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return (ENXIO);
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}
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/* disable all interrupts */
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REG_WRITE(ICU_ENABLE_REG, ICU_INT_MASK);
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bus_generic_probe(dev);
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bus_enumerate_hinted_children(dev);
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bus_generic_attach(dev);
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return (0);
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}
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static struct resource *
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obio_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 obio_softc *sc = device_get_softc(bus);
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struct obio_ivar *ivar = device_get_ivars(child);
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struct resource *rv;
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struct resource_list_entry *rle;
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struct rman *rm;
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int isdefault, needactivate, passthrough;
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isdefault = (start == 0UL && end == ~0UL && count == 1);
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needactivate = flags & RF_ACTIVE;
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passthrough = (device_get_parent(child) != bus);
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rle = NULL;
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if (passthrough)
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return (BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type,
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rid, start, end, count, flags));
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/*
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* If this is an allocation of the "default" range for a given RID,
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* and we know what the resources for this device are (ie. they aren't
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* maintained by a child bus), then work out the start/end values.
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*/
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if (isdefault) {
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rle = resource_list_find(&ivar->resources, type, *rid);
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if (rle == NULL)
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return (NULL);
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if (rle->res != NULL) {
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panic("%s: resource entry is busy", __func__);
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}
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start = rle->start;
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end = rle->end;
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count = rle->count;
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}
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switch (type) {
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case SYS_RES_IRQ:
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rm = &sc->oba_irq_rman;
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break;
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case SYS_RES_MEMORY:
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rm = &sc->oba_mem_rman;
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break;
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default:
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printf("%s: unknown resource type %d\n", __func__, type);
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return (0);
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}
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rv = rman_reserve_resource(rm, start, end, count, flags, child);
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if (rv == 0) {
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printf("%s: could not reserve resource\n", __func__);
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return (0);
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}
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rman_set_rid(rv, *rid);
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if (needactivate) {
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if (bus_activate_resource(child, type, *rid, rv)) {
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printf("%s: could not activate resource\n", __func__);
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rman_release_resource(rv);
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return (0);
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}
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}
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return (rv);
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}
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static int
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obio_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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/*
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* If this is a memory resource, track the direct mapping
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* in the uncached MIPS KSEG1 segment.
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*/
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if (type == SYS_RES_MEMORY) {
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void *vaddr;
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vaddr = (void *)MIPS_PHYS_TO_KSEG1((intptr_t)rman_get_start(r));
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rman_set_virtual(r, vaddr);
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rman_set_bustag(r, mips_bus_space_generic);
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rman_set_bushandle(r, (bus_space_handle_t)vaddr);
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}
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return (rman_activate_resource(r));
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}
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static int
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obio_deactivate_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 (rman_deactivate_resource(r));
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}
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static int
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obio_release_resource(device_t dev, device_t child, int type,
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int rid, struct resource *r)
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{
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struct resource_list *rl;
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struct resource_list_entry *rle;
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rl = obio_get_resource_list(dev, child);
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if (rl == NULL)
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return (EINVAL);
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rle = resource_list_find(rl, type, rid);
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if (rle == NULL)
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return (EINVAL);
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rman_release_resource(r);
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rle->res = NULL;
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return (0);
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}
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static int
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obio_setup_intr(device_t dev, device_t child, struct resource *ires,
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int flags, driver_filter_t *filt, driver_intr_t *handler,
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void *arg, void **cookiep)
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{
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struct obio_softc *sc = device_get_softc(dev);
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struct intr_event *event;
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int irq, error, priority;
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uint32_t irqmask;
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irq = rman_get_start(ires);
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if (irq >= NIRQS)
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panic("%s: bad irq %d", __func__, irq);
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event = sc->sc_eventstab[irq];
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if (event == NULL) {
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error = intr_event_create(&event, (void *)irq, 0, irq,
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(mask_fn)mips_mask_irq, (mask_fn)mips_unmask_irq,
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NULL, NULL, "obio intr%d:", irq);
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sc->sc_eventstab[irq] = event;
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}
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else
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panic("obio: Can't share IRQs");
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intr_event_add_handler(event, device_get_nameunit(child), filt,
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handler, arg, intr_priority(flags), flags, cookiep);
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irqmask = 1 << irq;
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priority = irq_priorities[irq];
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if (priority == INTR_FIQ)
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REG_WRITE(ICU_MODE_REG, REG_READ(ICU_MODE_REG) | irqmask);
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else
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REG_WRITE(ICU_MODE_REG, REG_READ(ICU_MODE_REG) & ~irqmask);
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/* enable */
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REG_WRITE(ICU_ENABLE_REG, irqmask);
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return (0);
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}
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static int
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obio_teardown_intr(device_t dev, device_t child, struct resource *ires,
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void *cookie)
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{
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struct obio_softc *sc = device_get_softc(dev);
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int irq, result;
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uint32_t irqmask;
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irq = rman_get_start(ires);
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if (irq >= NIRQS)
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panic("%s: bad irq %d", __func__, irq);
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if (sc->sc_eventstab[irq] == NULL)
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panic("Trying to teardown unoccupied IRQ");
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irqmask = 1 << irq; /* only used as a mask from here on */
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/* disable this irq in HW */
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REG_WRITE(ICU_DISABLE_REG, irqmask);
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result = intr_event_remove_handler(cookie);
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if (!result) {
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sc->sc_eventstab[irq] = NULL;
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}
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return (result);
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}
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static int
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obio_intr(void *arg)
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{
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struct obio_softc *sc = arg;
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struct intr_event *event;
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uint32_t irqstat;
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int irq;
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irqstat = REG_READ(ICU_FIQ_STATUS_REG);
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irqstat |= REG_READ(ICU_STATUS_REG);
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irq = 0;
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while (irqstat != 0) {
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if ((irqstat & 1) == 1) {
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event = sc->sc_eventstab[irq];
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if (!event || TAILQ_EMPTY(&event->ie_handlers))
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continue;
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/* TODO: pass frame as an argument*/
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/* TODO: log stray interrupt */
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intr_event_handle(event, NULL);
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}
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irq++;
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irqstat >>= 1;
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}
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return (FILTER_HANDLED);
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}
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static void
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obio_hinted_child(device_t bus, const char *dname, int dunit)
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{
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device_t child;
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long maddr;
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int msize;
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int irq;
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int result;
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child = BUS_ADD_CHILD(bus, 0, dname, dunit);
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/*
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* Set hard-wired resources for hinted child using
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* specific RIDs.
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*/
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resource_long_value(dname, dunit, "maddr", &maddr);
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resource_int_value(dname, dunit, "msize", &msize);
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result = bus_set_resource(child, SYS_RES_MEMORY, 0,
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maddr, msize);
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if (result != 0)
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device_printf(bus, "warning: bus_set_resource() failed\n");
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if (resource_int_value(dname, dunit, "irq", &irq) == 0) {
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result = bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1);
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if (result != 0)
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device_printf(bus,
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"warning: bus_set_resource() failed\n");
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}
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}
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static device_t
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obio_add_child(device_t bus, int order, const char *name, int unit)
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{
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device_t child;
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struct obio_ivar *ivar;
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ivar = malloc(sizeof(struct obio_ivar), M_DEVBUF, M_WAITOK | M_ZERO);
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if (ivar == NULL) {
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printf("Failed to allocate ivar\n");
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return (0);
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}
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resource_list_init(&ivar->resources);
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child = device_add_child_ordered(bus, order, name, unit);
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if (child == NULL) {
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printf("Can't add child %s%d ordered\n", name, unit);
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return (0);
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}
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device_set_ivars(child, ivar);
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return (child);
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}
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/*
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* Helper routine for bus_generic_rl_get_resource/bus_generic_rl_set_resource
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* Provides pointer to resource_list for these routines
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*/
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static struct resource_list *
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obio_get_resource_list(device_t dev, device_t child)
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{
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struct obio_ivar *ivar;
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ivar = device_get_ivars(child);
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return (&(ivar->resources));
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}
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static device_method_t obio_methods[] = {
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DEVMETHOD(bus_activate_resource, obio_activate_resource),
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DEVMETHOD(bus_add_child, obio_add_child),
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DEVMETHOD(bus_alloc_resource, obio_alloc_resource),
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DEVMETHOD(bus_deactivate_resource, obio_deactivate_resource),
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DEVMETHOD(bus_get_resource_list, obio_get_resource_list),
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DEVMETHOD(bus_hinted_child, obio_hinted_child),
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DEVMETHOD(bus_release_resource, obio_release_resource),
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DEVMETHOD(bus_setup_intr, obio_setup_intr),
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DEVMETHOD(bus_teardown_intr, obio_teardown_intr),
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DEVMETHOD(device_attach, obio_attach),
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DEVMETHOD(device_probe, obio_probe),
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DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
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DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
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{0, 0},
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};
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static driver_t obio_driver = {
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"obio",
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obio_methods,
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sizeof(struct obio_softc),
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};
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static devclass_t obio_devclass;
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DRIVER_MODULE(obio, nexus, obio_driver, obio_devclass, 0, 0);
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