123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251 |
- /*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright 2010 Nathan Whitehorn
- *
- * 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 AUTHOR ``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 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.
- *
- * $FreeBSD$
- */
- #include <sys/param.h>
- #include <sys/systm.h>
- #include <sys/module.h>
- #include <sys/bus.h>
- #include <sys/conf.h>
- #include <sys/kernel.h>
- #include <sys/malloc.h>
- #include <vm/vm.h>
- #include <vm/pmap.h>
- #include <machine/bus.h>
- #include <machine/intr_machdep.h>
- #include <machine/md_var.h>
- #include <machine/platform.h>
- #include "ps3-hvcall.h"
- #include "pic_if.h"
- static void ps3pic_identify(driver_t *driver, device_t parent);
- static int ps3pic_probe(device_t);
- static int ps3pic_attach(device_t);
- static void ps3pic_dispatch(device_t, struct trapframe *);
- static void ps3pic_enable(device_t, u_int, u_int, void **);
- static void ps3pic_eoi(device_t, u_int, void *);
- static void ps3pic_ipi(device_t, u_int);
- static void ps3pic_mask(device_t, u_int, void *);
- static void ps3pic_unmask(device_t, u_int, void *);
- struct ps3pic_softc {
- volatile uint64_t *bitmap_thread0;
- volatile uint64_t *mask_thread0;
- volatile uint64_t *bitmap_thread1;
- volatile uint64_t *mask_thread1;
- uint64_t sc_ipi_outlet[2];
- uint64_t sc_ipi_virq;
- int sc_vector[64];
- };
- static device_method_t ps3pic_methods[] = {
- /* Device interface */
- DEVMETHOD(device_identify, ps3pic_identify),
- DEVMETHOD(device_probe, ps3pic_probe),
- DEVMETHOD(device_attach, ps3pic_attach),
- /* PIC interface */
- DEVMETHOD(pic_dispatch, ps3pic_dispatch),
- DEVMETHOD(pic_enable, ps3pic_enable),
- DEVMETHOD(pic_eoi, ps3pic_eoi),
- DEVMETHOD(pic_ipi, ps3pic_ipi),
- DEVMETHOD(pic_mask, ps3pic_mask),
- DEVMETHOD(pic_unmask, ps3pic_unmask),
- { 0, 0 },
- };
- static driver_t ps3pic_driver = {
- "ps3pic",
- ps3pic_methods,
- sizeof(struct ps3pic_softc)
- };
- static devclass_t ps3pic_devclass;
- DRIVER_MODULE(ps3pic, nexus, ps3pic_driver, ps3pic_devclass, 0, 0);
- static MALLOC_DEFINE(M_PS3PIC, "ps3pic", "PS3 PIC");
- static void
- ps3pic_identify(driver_t *driver, device_t parent)
- {
- if (strcmp(installed_platform(), "ps3") != 0)
- return;
- if (device_find_child(parent, "ps3pic", -1) == NULL)
- BUS_ADD_CHILD(parent, 0, "ps3pic", 0);
- }
- static int
- ps3pic_probe(device_t dev)
- {
- device_set_desc(dev, "Playstation 3 interrupt controller");
- return (BUS_PROBE_NOWILDCARD);
- }
- static int
- ps3pic_attach(device_t dev)
- {
- struct ps3pic_softc *sc;
- uint64_t ppe;
- int thread;
- sc = device_get_softc(dev);
- sc->bitmap_thread0 = contigmalloc(128 /* 512 bits * 2 */, M_PS3PIC,
- M_NOWAIT | M_ZERO, 0, BUS_SPACE_MAXADDR, 64 /* alignment */,
- PAGE_SIZE /* boundary */);
- sc->mask_thread0 = sc->bitmap_thread0 + 4;
- sc->bitmap_thread1 = sc->bitmap_thread0 + 8;
- sc->mask_thread1 = sc->bitmap_thread0 + 12;
- lv1_get_logical_ppe_id(&ppe);
- thread = 32 - fls(mfctrl());
- lv1_configure_irq_state_bitmap(ppe, thread,
- vtophys(sc->bitmap_thread0));
- sc->sc_ipi_virq = 63;
- #ifdef SMP
- lv1_configure_irq_state_bitmap(ppe, !thread,
- vtophys(sc->bitmap_thread1));
- /* Map both IPIs to the same VIRQ to avoid changes in intr_machdep */
- lv1_construct_event_receive_port(&sc->sc_ipi_outlet[0]);
- lv1_connect_irq_plug_ext(ppe, thread, sc->sc_ipi_virq,
- sc->sc_ipi_outlet[0], 0);
- lv1_construct_event_receive_port(&sc->sc_ipi_outlet[1]);
- lv1_connect_irq_plug_ext(ppe, !thread, sc->sc_ipi_virq,
- sc->sc_ipi_outlet[1], 0);
- #endif
- powerpc_register_pic(dev, 0, sc->sc_ipi_virq, 1, FALSE);
- return (0);
- }
- /*
- * PIC I/F methods.
- */
- static void
- ps3pic_dispatch(device_t dev, struct trapframe *tf)
- {
- uint64_t bitmap, mask;
- int irq;
- struct ps3pic_softc *sc;
- sc = device_get_softc(dev);
- if (PCPU_GET(cpuid) == 0) {
- bitmap = atomic_readandclear_64(&sc->bitmap_thread0[0]);
- mask = sc->mask_thread0[0];
- } else {
- bitmap = atomic_readandclear_64(&sc->bitmap_thread1[0]);
- mask = sc->mask_thread1[0];
- }
- powerpc_sync();
- while ((irq = ffsl(bitmap & mask) - 1) != -1) {
- bitmap &= ~(1UL << irq);
- powerpc_dispatch_intr(sc->sc_vector[63 - irq], tf);
- }
- }
- static void
- ps3pic_enable(device_t dev, u_int irq, u_int vector, void **priv)
- {
- struct ps3pic_softc *sc;
- sc = device_get_softc(dev);
- sc->sc_vector[irq] = vector;
- ps3pic_unmask(dev, irq, priv);
- }
- static void
- ps3pic_eoi(device_t dev, u_int irq, void *priv)
- {
- uint64_t ppe;
- int thread;
- lv1_get_logical_ppe_id(&ppe);
- thread = 32 - fls(mfctrl());
- lv1_end_of_interrupt_ext(ppe, thread, irq);
- }
- static void
- ps3pic_ipi(device_t dev, u_int cpu)
- {
- struct ps3pic_softc *sc;
- sc = device_get_softc(dev);
- lv1_send_event_locally(sc->sc_ipi_outlet[cpu]);
- }
- static void
- ps3pic_mask(device_t dev, u_int irq, void *priv)
- {
- struct ps3pic_softc *sc;
- uint64_t ppe;
- sc = device_get_softc(dev);
- /* Do not mask IPIs! */
- if (irq == sc->sc_ipi_virq)
- return;
- atomic_clear_64(&sc->mask_thread0[0], 1UL << (63 - irq));
- atomic_clear_64(&sc->mask_thread1[0], 1UL << (63 - irq));
- lv1_get_logical_ppe_id(&ppe);
- lv1_did_update_interrupt_mask(ppe, 0);
- lv1_did_update_interrupt_mask(ppe, 1);
- }
- static void
- ps3pic_unmask(device_t dev, u_int irq, void *priv)
- {
- struct ps3pic_softc *sc;
- uint64_t ppe;
- sc = device_get_softc(dev);
- atomic_set_64(&sc->mask_thread0[0], 1UL << (63 - irq));
- atomic_set_64(&sc->mask_thread1[0], 1UL << (63 - irq));
- lv1_get_logical_ppe_id(&ppe);
- lv1_did_update_interrupt_mask(ppe, 0);
- lv1_did_update_interrupt_mask(ppe, 1);
- }
|