diff options
Diffstat (limited to 'sys/mips/atheros/apb.c')
-rw-r--r-- | sys/mips/atheros/apb.c | 433 |
1 files changed, 0 insertions, 433 deletions
diff --git a/sys/mips/atheros/apb.c b/sys/mips/atheros/apb.c deleted file mode 100644 index d53408c..0000000 --- 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); |