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authorgonzo <gonzo@FreeBSD.org>2009-04-13 03:08:11 +0000
committergonzo <gonzo@FreeBSD.org>2009-04-13 03:08:11 +0000
commit16b2e4b851fc13d49105bf544ef5f7d89526ed3a (patch)
tree35d65244575c98974af52810da6153780138e0d6 /sys/mips/atheros/apb.c
parent2288c0b1828fa2a4aad02035be45876fc1eca752 (diff)
parent67227c12c0e0a27755a06861b476815955bd8b2b (diff)
downloadFreeBSD-src-16b2e4b851fc13d49105bf544ef5f7d89526ed3a.zip
FreeBSD-src-16b2e4b851fc13d49105bf544ef5f7d89526ed3a.tar.gz
- Merge from HEAD
Diffstat (limited to 'sys/mips/atheros/apb.c')
-rw-r--r--sys/mips/atheros/apb.c433
1 files changed, 0 insertions, 433 deletions
diff --git a/sys/mips/atheros/apb.c b/sys/mips/atheros/apb.c
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--- a/sys/mips/atheros/apb.c
+++ /dev/null
@@ -1,433 +0,0 @@
-/*-
- * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
- * 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 unmodified, 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 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>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/bus.h>
-#include <sys/interrupt.h>
-#include <sys/kernel.h>
-#include <sys/module.h>
-#include <sys/rman.h>
-#include <sys/malloc.h>
-
-#include <machine/bus.h>
-
-#include <mips/atheros/apbvar.h>
-#include <mips/atheros/ar71xxreg.h>
-
-#undef APB_DEBUG
-#ifdef APB_DEBUG
-#define dprintf printf
-#else
-#define dprintf(x, arg...)
-#endif /* APB_DEBUG */
-
-static int apb_activate_resource(device_t, device_t, int, int,
- struct resource *);
-static device_t apb_add_child(device_t, int, const char *, int);
-static struct resource *
- apb_alloc_resource(device_t, device_t, int, int *, u_long,
- u_long, u_long, u_int);
-static int apb_attach(device_t);
-static int apb_deactivate_resource(device_t, device_t, int, int,
- struct resource *);
-static struct resource_list *
- apb_get_resource_list(device_t, device_t);
-static void apb_hinted_child(device_t, const char *, int);
-static int apb_intr(void *);
-static int apb_probe(device_t);
-static int apb_release_resource(device_t, device_t, int, int,
- struct resource *);
-static int apb_setup_intr(device_t, device_t, struct resource *, int,
- driver_filter_t *, driver_intr_t *, void *, void **);
-static int apb_teardown_intr(device_t, device_t, struct resource *,
- void *);
-
-static void apb_mask_irq(unsigned int irq)
-{
- uint32_t reg;
-
- reg = ATH_READ_REG(AR71XX_MISC_INTR_MASK);
- ATH_WRITE_REG(AR71XX_MISC_INTR_MASK, reg & ~(1 << irq));
-
-}
-
-static void apb_unmask_irq(unsigned int irq)
-{
- uint32_t reg;
-
- reg = ATH_READ_REG(AR71XX_MISC_INTR_MASK);
- ATH_WRITE_REG(AR71XX_MISC_INTR_MASK, reg | (1 << irq));
-}
-
-static int
-apb_probe(device_t dev)
-{
-
- return (0);
-}
-
-static int
-apb_attach(device_t dev)
-{
- struct apb_softc *sc = device_get_softc(dev);
- int rid = 0;
-
- device_set_desc(dev, "APB Bus bridge");
- sc->apb_irq_rman.rm_type = RMAN_ARRAY;
- sc->apb_irq_rman.rm_descr = "APB IRQ";
-
- if (rman_init(&sc->apb_irq_rman) != 0 ||
- rman_manage_region(&sc->apb_irq_rman,
- APB_IRQ_BASE, APB_IRQ_END) != 0)
- panic("apb_attach: failed to set up IRQ rman");
-
- if ((sc->sc_misc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
- RF_SHAREABLE | RF_ACTIVE)) == NULL) {
- device_printf(dev, "unable to allocate IRQ resource\n");
- return (ENXIO);
- }
-
- if ((bus_setup_intr(dev, sc->sc_misc_irq, INTR_TYPE_MISC,
- apb_intr, NULL, sc, &sc->sc_misc_ih))) {
- device_printf(dev,
- "WARNING: unable to register interrupt handler\n");
- return (ENXIO);
- }
-
- bus_generic_probe(dev);
- bus_enumerate_hinted_children(dev);
- bus_generic_attach(dev);
-
- return (0);
-}
-
-static struct resource *
-apb_alloc_resource(device_t bus, device_t child, int type, int *rid,
- u_long start, u_long end, u_long count, u_int flags)
-{
- struct apb_softc *sc = device_get_softc(bus);
- struct apb_ivar *ivar = device_get_ivars(child);
- struct resource *rv;
- struct resource_list_entry *rle;
- struct rman *rm;
- int isdefault, needactivate, passthrough;
-
- isdefault = (start == 0UL && end == ~0UL);
- needactivate = flags & RF_ACTIVE;
- /*
- * Pass memory requests to nexus device
- */
- passthrough = (device_get_parent(child) != bus) ||
- (type == SYS_RES_MEMORY);
- rle = NULL;
-
- dprintf("%s: entry (%p, %p, %d, %p, %p, %p, %ld, %d)\n",
- __func__, bus, child, type, rid, (void *)(intptr_t)start,
- (void *)(intptr_t)end, count, flags);
-
- if (passthrough)
- return (BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type,
- rid, start, end, count, flags));
-
- /*
- * If this is an allocation of the "default" range for a given RID,
- * and we know what the resources for this device are (ie. they aren't
- * maintained by a child bus), then work out the start/end values.
- */
-
- if (isdefault) {
- rle = resource_list_find(&ivar->resources, type, *rid);
- if (rle == NULL) {
- return (NULL);
- }
-
- if (rle->res != NULL) {
- panic("%s: resource entry is busy", __func__);
- }
- start = rle->start;
- end = rle->end;
- count = rle->count;
-
- dprintf("%s: default resource (%p, %p, %ld)\n",
- __func__, (void *)(intptr_t)start,
- (void *)(intptr_t)end, count);
- }
-
- switch (type) {
- case SYS_RES_IRQ:
- rm = &sc->apb_irq_rman;
- break;
- default:
- printf("%s: unknown resource type %d\n", __func__, type);
- return (0);
- }
-
- rv = rman_reserve_resource(rm, start, end, count, flags, child);
- if (rv == 0) {
- printf("%s: could not reserve resource\n", __func__);
- return (0);
- }
-
- rman_set_rid(rv, *rid);
-
- if (needactivate) {
- if (bus_activate_resource(child, type, *rid, rv)) {
- printf("%s: could not activate resource\n", __func__);
- rman_release_resource(rv);
- return (0);
- }
- }
-
- return (rv);
-}
-
-static int
-apb_activate_resource(device_t bus, device_t child, int type, int rid,
- struct resource *r)
-{
-
- /* XXX: should we mask/unmask IRQ here? */
- return (BUS_ACTIVATE_RESOURCE(device_get_parent(bus), child,
- type, rid, r));
-}
-
-static int
-apb_deactivate_resource(device_t bus, device_t child, int type, int rid,
- struct resource *r)
-{
-
- /* XXX: should we mask/unmask IRQ here? */
- return (BUS_DEACTIVATE_RESOURCE(device_get_parent(bus), child,
- type, rid, r));
-}
-
-static int
-apb_release_resource(device_t dev, device_t child, int type,
- int rid, struct resource *r)
-{
- struct resource_list *rl;
- struct resource_list_entry *rle;
-
- rl = apb_get_resource_list(dev, child);
- if (rl == NULL)
- return (EINVAL);
- rle = resource_list_find(rl, type, rid);
- if (rle == NULL)
- return (EINVAL);
- rman_release_resource(r);
- rle->res = NULL;
-
- return (0);
-}
-
-static int
-apb_setup_intr(device_t bus, device_t child, struct resource *ires,
- int flags, driver_filter_t *filt, driver_intr_t *handler,
- void *arg, void **cookiep)
-{
- struct apb_softc *sc = device_get_softc(bus);
- struct intr_event *event;
- int irq, error;
-
- irq = rman_get_start(ires);
-
- if (irq > APB_IRQ_END)
- panic("%s: bad irq %d", __func__, irq);
-
- event = sc->sc_eventstab[irq];
- if (event == NULL) {
- error = intr_event_create(&event, (void *)irq, 0, irq,
- (mask_fn)apb_mask_irq, (mask_fn)apb_unmask_irq,
- NULL, NULL,
- "apb intr%d:", irq);
-
- sc->sc_eventstab[irq] = event;
- }
-
- intr_event_add_handler(event, device_get_nameunit(child), filt,
- handler, arg, intr_priority(flags), flags, cookiep);
-
- return (0);
-}
-
-static int
-apb_teardown_intr(device_t dev, device_t child, struct resource *ires,
- void *cookie)
-{
- struct apb_softc *sc = device_get_softc(dev);
- int irq, result;
-
- irq = rman_get_start(ires);
- if (irq > APB_IRQ_END)
- panic("%s: bad irq %d", __func__, irq);
-
- if (sc->sc_eventstab[irq] == NULL)
- panic("Trying to teardown unoccupied IRQ");
-
- apb_mask_irq(irq);
-
- result = intr_event_remove_handler(cookie);
- if (!result)
- sc->sc_eventstab[irq] = NULL;
-
- return (result);
-}
-
-static int
-apb_intr(void *arg)
-{
- struct apb_softc *sc = arg;
- struct intr_event *event;
- uint32_t reg, irq;
-
- reg = ATH_READ_REG(AR71XX_MISC_INTR_STATUS);
- for (irq = 0; irq < APB_NIRQS; irq++) {
- if (reg & (1 << irq)) {
- event = sc->sc_eventstab[irq];
- if (!event || TAILQ_EMPTY(&event->ie_handlers)) {
- printf("Stray IRQ %d\n", irq);
- continue;
- }
-
- /* TODO: frame instead of NULL? */
- intr_event_handle(event, NULL);
- }
- }
-
- return (FILTER_HANDLED);
-}
-
-static void
-apb_hinted_child(device_t bus, const char *dname, int dunit)
-{
- device_t child;
- long maddr;
- int msize;
- int irq;
- int result;
- int mem_hints_count;
-
- child = BUS_ADD_CHILD(bus, 0, dname, dunit);
-
- /*
- * Set hard-wired resources for hinted child using
- * specific RIDs.
- */
- mem_hints_count = 0;
- if (resource_long_value(dname, dunit, "maddr", &maddr) == 0)
- mem_hints_count++;
- if (resource_int_value(dname, dunit, "msize", &msize) == 0)
- mem_hints_count++;
-
- /* check if all info for mem resource has been provided */
- if ((mem_hints_count > 0) && (mem_hints_count < 2)) {
- printf("Either maddr or msize hint is missing for %s%d\n",
- dname, dunit);
- } else if (mem_hints_count) {
- result = bus_set_resource(child, SYS_RES_MEMORY, 0,
- maddr, msize);
- if (result != 0)
- device_printf(bus,
- "warning: bus_set_resource() failed\n");
- }
-
- if (resource_int_value(dname, dunit, "irq", &irq) == 0) {
- result = bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1);
- if (result != 0)
- device_printf(bus,
- "warning: bus_set_resource() failed\n");
- }
-}
-
-static device_t
-apb_add_child(device_t bus, int order, const char *name, int unit)
-{
- device_t child;
- struct apb_ivar *ivar;
-
- ivar = malloc(sizeof(struct apb_ivar), M_DEVBUF, M_WAITOK | M_ZERO);
- if (ivar == NULL) {
- printf("Failed to allocate ivar\n");
- return (0);
- }
- resource_list_init(&ivar->resources);
-
- child = device_add_child_ordered(bus, order, name, unit);
- if (child == NULL) {
- printf("Can't add child %s%d ordered\n", name, unit);
- return (0);
- }
-
- device_set_ivars(child, ivar);
-
- return (child);
-}
-
-/*
- * Helper routine for bus_generic_rl_get_resource/bus_generic_rl_set_resource
- * Provides pointer to resource_list for these routines
- */
-static struct resource_list *
-apb_get_resource_list(device_t dev, device_t child)
-{
- struct apb_ivar *ivar;
-
- ivar = device_get_ivars(child);
- return (&(ivar->resources));
-}
-
-static device_method_t apb_methods[] = {
- DEVMETHOD(bus_activate_resource, apb_activate_resource),
- DEVMETHOD(bus_add_child, apb_add_child),
- DEVMETHOD(bus_alloc_resource, apb_alloc_resource),
- DEVMETHOD(bus_deactivate_resource, apb_deactivate_resource),
- DEVMETHOD(bus_get_resource_list, apb_get_resource_list),
- DEVMETHOD(bus_hinted_child, apb_hinted_child),
- DEVMETHOD(bus_print_child, bus_generic_print_child),
- DEVMETHOD(bus_release_resource, apb_release_resource),
- DEVMETHOD(bus_setup_intr, apb_setup_intr),
- DEVMETHOD(bus_teardown_intr, apb_teardown_intr),
- DEVMETHOD(device_attach, apb_attach),
- DEVMETHOD(device_probe, apb_probe),
- DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
- DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
-
- {0, 0},
-};
-
-static driver_t apb_driver = {
- "apb",
- apb_methods,
- sizeof(struct apb_softc),
-};
-static devclass_t apb_devclass;
-
-DRIVER_MODULE(apb, nexus, apb_driver, apb_devclass, 0, 0);
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