svn commit: r365450 - in head/sys: arm64/conf conf dev/gpio
Andrew Turner
andrew at FreeBSD.org
Tue Sep 8 11:35:37 UTC 2020
Author: andrew
Date: Tue Sep 8 11:35:35 2020
New Revision: 365450
URL: https://svnweb.freebsd.org/changeset/base/365450
Log:
Add a GPIO driver for the Arm pl061 controller
A PL061 is a simple 8 pin GPIO controller. This GPIO device is used to
signal an internal request for shutdown on some virtual machines including
Arm-based Amazon EC2 instances.
Submitted by: Ali Saidi <alisaidi_amazon.com> (previouss version)
Reviewed by: Ali Saidi, manu
Differential Revision: https://reviews.freebsd.org/D24065
Added:
head/sys/dev/gpio/pl061.c (contents, props changed)
head/sys/dev/gpio/pl061.h (contents, props changed)
head/sys/dev/gpio/pl061_acpi.c (contents, props changed)
head/sys/dev/gpio/pl061_fdt.c (contents, props changed)
Modified:
head/sys/arm64/conf/GENERIC
head/sys/conf/files.arm64
Modified: head/sys/arm64/conf/GENERIC
==============================================================================
--- head/sys/arm64/conf/GENERIC Tue Sep 8 10:36:11 2020 (r365449)
+++ head/sys/arm64/conf/GENERIC Tue Sep 8 11:35:35 2020 (r365450)
@@ -257,6 +257,7 @@ device gpioregulator
device ls1046_gpio # LS1046A GPIO controller
device mv_gpio # Marvell GPIO controller
device mvebu_pinctrl # Marvell Pinmux Controller
+device pl061 # Arm PL061 GPIO controller
device rk_gpio # RockChip GPIO Controller
device rk_pinctrl # RockChip Pinmux Controller
Modified: head/sys/conf/files.arm64
==============================================================================
--- head/sys/conf/files.arm64 Tue Sep 8 10:36:11 2020 (r365449)
+++ head/sys/conf/files.arm64 Tue Sep 8 11:35:35 2020 (r365450)
@@ -305,6 +305,9 @@ dev/iicbus/sy8106a.c optional sy8106a fdt
dev/iicbus/twsi/mv_twsi.c optional twsi fdt
dev/iicbus/twsi/a10_twsi.c optional twsi fdt
dev/iicbus/twsi/twsi.c optional twsi fdt
+dev/gpio/pl061.c optional pl061 gpio
+dev/gpio/pl061_acpi.c optional pl061 gpio acpi
+dev/gpio/pl061_fdt.c optional pl061 gpio fdt
dev/hwpmc/hwpmc_arm64.c optional hwpmc
dev/hwpmc/hwpmc_arm64_md.c optional hwpmc
dev/mbox/mbox_if.m optional soc_brcm_bcm2837
Added: head/sys/dev/gpio/pl061.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/gpio/pl061.c Tue Sep 8 11:35:35 2020 (r365450)
@@ -0,0 +1,580 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 Amazon.com, Inc. or its affiliates.
+ * 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, 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/kernel.h>
+#include <sys/module.h>
+#include <sys/proc.h>
+#include <sys/rman.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/gpio.h>
+#include <sys/interrupt.h>
+
+#include <machine/bus.h>
+#include <machine/intr.h>
+#include <machine/resource.h>
+
+#include <dev/gpio/gpiobusvar.h>
+
+#include "pl061.h"
+
+#include "gpio_if.h"
+#include "pic_if.h"
+
+#define PL061_LOCK(_sc) mtx_lock_spin(&(_sc)->sc_mtx)
+#define PL061_UNLOCK(_sc) mtx_unlock_spin(&(_sc)->sc_mtx)
+#define PL061_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx)
+#define PL061_ASSERT_LOCKED(_sc) mtx_assert(&(_sc)->sc_mtx, MA_OWNED)
+#define PL061_ASSERT_UNLOCKED(_sc) mtx_assert(&(_sc)->sc_mtx, MA_NOTOWNED)
+
+#if 0
+#define dprintf(fmt, args...) do { \
+ printf(fmt, ##args); \
+} while (0)
+#else
+#define dprintf(fmt, args...)
+#endif
+
+#define PL061_PIN_TO_ADDR(pin) (1 << (pin + 2))
+#define PL061_DATA 0x3FC
+#define PL061_DIR 0x400
+#define PL061_INTSENSE 0x404
+#define PL061_INTBOTHEDGES 0x408
+#define PL061_INTEVENT 0x40C
+#define PL061_INTMASK 0x410
+#define PL061_RAWSTATUS 0x414
+#define PL061_STATUS 0x418
+#define PL061_INTCLR 0x41C
+#define PL061_MODECTRL 0x420
+
+#define PL061_ALLOWED_CAPS (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT | GPIO_INTR_EDGE_BOTH | \
+ GPIO_INTR_EDGE_RISING | GPIO_INTR_EDGE_FALLING | \
+ GPIO_INTR_LEVEL_HIGH | GPIO_INTR_LEVEL_LOW )
+
+#define PIC_INTR_ISRC(sc, irq) (&(sc->sc_isrcs[irq].isrc))
+
+static device_t
+pl061_get_bus(device_t dev)
+{
+ struct pl061_softc *sc;
+
+ sc = device_get_softc(dev);
+ return (sc->sc_busdev);
+}
+
+static int
+pl061_pin_max(device_t dev, int *maxpin)
+{
+ *maxpin = PL061_NUM_GPIO - 1;
+ return (0);
+}
+
+static int
+pl061_pin_getname(device_t dev, uint32_t pin, char *name)
+{
+ struct pl061_softc *sc;
+
+ sc = device_get_softc(dev);
+ if (pin >= PL061_NUM_GPIO)
+ return (EINVAL);
+
+ snprintf(name, GPIOMAXNAME, "p%u", pin);
+ name[GPIOMAXNAME - 1] = '\0';
+
+ return (0);
+}
+
+static int
+pl061_pin_getflags(device_t dev, uint32_t pin, uint32_t *flags)
+{
+ struct pl061_softc *sc;
+ uint8_t mask = 1 << pin;
+
+ sc = device_get_softc(dev);
+ if (pin >= PL061_NUM_GPIO)
+ return (EINVAL);
+
+ PL061_LOCK(sc);
+ *flags = 0;
+
+ if (mask & bus_read_1(sc->sc_mem_res, PL061_DIR))
+ *flags |= GPIO_PIN_OUTPUT;
+ else
+ *flags |= GPIO_PIN_INPUT;
+
+ PL061_UNLOCK(sc);
+ return (0);
+}
+
+static int
+pl061_pin_getcaps(device_t dev, uint32_t pin, uint32_t *caps)
+{
+ struct pl061_softc *sc;
+
+ sc = device_get_softc(dev);
+ if (pin >= PL061_NUM_GPIO)
+ return (EINVAL);
+
+ *caps = PL061_ALLOWED_CAPS;
+
+ return (0);
+}
+
+static void
+mask_and_set(struct pl061_softc *sc, long a, uint8_t m, uint8_t b)
+{
+ uint8_t tmp;
+
+ tmp = bus_read_1(sc->sc_mem_res, a);
+ tmp &= ~m;
+ tmp |= b;
+ bus_write_1(sc->sc_mem_res, a, tmp);
+ dprintf("%s: writing %#x to register %#lx\n", __func__, tmp, a);
+}
+
+static int
+pl061_pin_setflags(device_t dev, uint32_t pin, uint32_t flags)
+{
+ struct pl061_softc *sc;
+ uint8_t mask = 1 << pin;
+ const uint32_t in_out = (GPIO_PIN_INPUT | GPIO_PIN_OUTPUT);
+
+ sc = device_get_softc(dev);
+ if (pin >= PL061_NUM_GPIO)
+ return (EINVAL);
+
+ if (flags & ~PL061_ALLOWED_CAPS)
+ return (EINVAL);
+
+ /* can't be both input and output */
+ if ((flags & in_out) == in_out)
+ return (EINVAL);
+
+
+ PL061_LOCK(sc);
+ mask_and_set(sc, PL061_DIR, mask, flags & GPIO_PIN_OUTPUT ? mask : 0);
+ PL061_UNLOCK(sc);
+ return (0);
+}
+
+static int
+pl061_pin_get(device_t dev, uint32_t pin, uint32_t *value)
+{
+ struct pl061_softc *sc;
+
+ sc = device_get_softc(dev);
+ if (pin >= PL061_NUM_GPIO)
+ return (EINVAL);
+
+ PL061_LOCK(sc);
+ if (bus_read_1(sc->sc_mem_res, PL061_PIN_TO_ADDR(pin)))
+ *value = GPIO_PIN_HIGH;
+ else
+ *value = GPIO_PIN_LOW;
+ PL061_UNLOCK(sc);
+
+ return (0);
+}
+
+static int
+pl061_pin_set(device_t dev, uint32_t pin, uint32_t value)
+{
+ struct pl061_softc *sc;
+ uint8_t d = (value == GPIO_PIN_HIGH) ? 0xff : 0x00;
+
+ sc = device_get_softc(dev);
+ if (pin >= PL061_NUM_GPIO)
+ return (EINVAL);
+
+ PL061_LOCK(sc);
+ bus_write_1(sc->sc_mem_res, PL061_PIN_TO_ADDR(pin), d);
+ PL061_UNLOCK(sc);
+
+ return (0);
+}
+
+static int
+pl061_pin_toggle(device_t dev, uint32_t pin)
+{
+ struct pl061_softc *sc;
+ uint8_t d;
+
+ sc = device_get_softc(dev);
+ if (pin >= PL061_NUM_GPIO)
+ return (EINVAL);
+
+ PL061_LOCK(sc);
+ d = ~bus_read_1(sc->sc_mem_res, PL061_PIN_TO_ADDR(pin));
+ bus_write_1(sc->sc_mem_res, PL061_PIN_TO_ADDR(pin), d);
+ PL061_UNLOCK(sc);
+
+ return (0);
+}
+
+static void
+pl061_pic_disable_intr(device_t dev, struct intr_irqsrc *isrc)
+{
+ struct pl061_softc *sc;
+ uint8_t mask;
+
+ sc = device_get_softc(dev);
+ mask = 1 << ((struct pl061_pin_irqsrc *)isrc)->irq;
+
+ dprintf("%s: calling disable interrupt %#x\n", __func__, mask);
+ PL061_LOCK(sc);
+ mask_and_set(sc, PL061_INTMASK, mask, 0);
+ PL061_UNLOCK(sc);
+}
+
+
+
+static void
+pl061_pic_enable_intr(device_t dev, struct intr_irqsrc *isrc)
+{
+ struct pl061_softc *sc;
+ uint8_t mask;
+
+ sc = device_get_softc(dev);
+ mask = 1 << ((struct pl061_pin_irqsrc *)isrc)->irq;
+
+
+ dprintf("%s: calling enable interrupt %#x\n", __func__, mask);
+ PL061_LOCK(sc);
+ mask_and_set(sc, PL061_INTMASK, mask, mask);
+ PL061_UNLOCK(sc);
+}
+
+static int
+pl061_pic_map_intr(device_t dev, struct intr_map_data *data,
+ struct intr_irqsrc **isrcp)
+{
+ struct pl061_softc *sc;
+ struct intr_map_data_gpio *gdata;
+ uint32_t irq;
+
+ sc = device_get_softc(dev);
+ if (data->type != INTR_MAP_DATA_GPIO)
+ return (ENOTSUP);
+
+ gdata = (struct intr_map_data_gpio *)data;
+ irq = gdata->gpio_pin_num;
+ if (irq >= PL061_NUM_GPIO) {
+ device_printf(dev, "invalid interrupt number %u\n", irq);
+ return (EINVAL);
+ }
+
+ dprintf("%s: calling map interrupt %u\n", __func__, irq);
+ *isrcp = PIC_INTR_ISRC(sc, irq);
+
+ return (0);
+}
+
+static int
+pl061_pic_setup_intr(device_t dev, struct intr_irqsrc *isrc,
+ struct resource *res, struct intr_map_data *data)
+{
+ struct pl061_softc *sc;
+ struct intr_map_data_gpio *gdata;
+ struct pl061_pin_irqsrc *irqsrc;
+ uint32_t mode;
+ uint8_t mask;
+
+ if (data == NULL)
+ return (ENOTSUP);
+
+ sc = device_get_softc(dev);
+ gdata = (struct intr_map_data_gpio *)data;
+ irqsrc = (struct pl061_pin_irqsrc *)isrc;
+
+ mode = gdata->gpio_intr_mode;
+ mask = 1 << gdata->gpio_pin_num;
+
+ dprintf("%s: calling setup interrupt %u mode %#x\n", __func__,
+ irqsrc->irq, mode);
+ if (irqsrc->irq != gdata->gpio_pin_num) {
+ dprintf("%s: interrupts don't match\n", __func__);
+ return (EINVAL);
+ }
+
+ if (isrc->isrc_handlers != 0) {
+ dprintf("%s: handler already attached\n", __func__);
+ return (irqsrc->mode == mode ? 0 : EINVAL);
+ }
+ irqsrc->mode = mode;
+
+ PL061_LOCK(sc);
+
+ if (mask & GPIO_INTR_EDGE_BOTH) {
+ mask_and_set(sc, PL061_INTBOTHEDGES, mask, mask);
+ mask_and_set(sc, PL061_INTSENSE, mask, 0);
+ } else if (mask & GPIO_INTR_EDGE_RISING) {
+ mask_and_set(sc, PL061_INTBOTHEDGES, mask, 0);
+ mask_and_set(sc, PL061_INTSENSE, mask, 0);
+ mask_and_set(sc, PL061_INTEVENT, mask, mask);
+ } else if (mask & GPIO_INTR_EDGE_FALLING) {
+ mask_and_set(sc, PL061_INTBOTHEDGES, mask, 0);
+ mask_and_set(sc, PL061_INTSENSE, mask, 0);
+ mask_and_set(sc, PL061_INTEVENT, mask, 0);
+ } else if (mask & GPIO_INTR_LEVEL_HIGH) {
+ mask_and_set(sc, PL061_INTBOTHEDGES, mask, 0);
+ mask_and_set(sc, PL061_INTSENSE, mask, mask);
+ mask_and_set(sc, PL061_INTEVENT, mask, mask);
+ } else if (mask & GPIO_INTR_LEVEL_LOW) {
+ mask_and_set(sc, PL061_INTBOTHEDGES, mask, 0);
+ mask_and_set(sc, PL061_INTSENSE, mask, mask);
+ mask_and_set(sc, PL061_INTEVENT, mask, 0);
+ }
+ PL061_UNLOCK(sc);
+ return (0);
+}
+
+static int
+pl061_pic_teardown_intr(device_t dev, struct intr_irqsrc *isrc,
+ struct resource *res, struct intr_map_data *data)
+{
+ struct pl061_softc *sc;
+ struct pl061_pin_irqsrc *irqsrc;
+ uint8_t mask;
+
+ irqsrc = (struct pl061_pin_irqsrc *)isrc;
+ mask = 1 << irqsrc->irq;
+ dprintf("%s: calling teardown interrupt %#x\n", __func__, mask);
+
+ sc = device_get_softc(dev);
+ if (isrc->isrc_handlers == 0) {
+ irqsrc->mode = GPIO_INTR_CONFORM;
+ PL061_LOCK(sc);
+ mask_and_set(sc, PL061_INTMASK, mask, 0);
+ PL061_UNLOCK(sc);
+ }
+ return (0);
+}
+
+static void
+pl061_pic_post_filter(device_t dev, struct intr_irqsrc *isrc)
+{
+ struct pl061_softc *sc;
+ uint8_t mask;
+
+ sc = device_get_softc(dev);
+ mask = 1 << ((struct pl061_pin_irqsrc *)isrc)->irq;
+ dprintf("%s: calling post filter %#x\n", __func__, mask);
+
+ bus_write_1(sc->sc_mem_res, PL061_INTCLR, mask);
+}
+
+static void
+pl061_pic_post_ithread(device_t dev, struct intr_irqsrc *isrc)
+{
+ struct pl061_softc *sc;
+ uint8_t mask;
+
+ sc = device_get_softc(dev);
+ mask = 1 << ((struct pl061_pin_irqsrc *)isrc)->irq;
+ dprintf("%s: calling post ithread %#x\n", __func__, mask);
+ bus_write_1(sc->sc_mem_res, PL061_INTCLR, mask);
+
+ pl061_pic_enable_intr(dev, isrc);
+}
+
+static void
+pl061_pic_pre_ithread(device_t dev, struct intr_irqsrc *isrc)
+{
+ pl061_pic_disable_intr(dev, isrc);
+}
+
+static int
+pl061_intr(void *arg)
+{
+ struct pl061_softc *sc;
+ struct trapframe *tf;
+ uint8_t status;
+ int pin;
+
+ sc = (struct pl061_softc *)arg;
+ tf = curthread->td_intr_frame;
+
+ status = bus_read_1(sc->sc_mem_res, PL061_STATUS);
+
+ while (status != 0) {
+ pin = ffs(status) - 1;
+ status &= ~(1 << pin);
+
+ if (intr_isrc_dispatch(PIC_INTR_ISRC(sc, pin), tf) != 0)
+ device_printf(sc->sc_dev, "spurious interrupt %d\n",
+ pin);
+
+ dprintf("got IRQ on %d\n", pin);
+
+ }
+ return (FILTER_HANDLED);
+}
+
+int
+pl061_attach(device_t dev)
+{
+ struct pl061_softc *sc;
+ int ret;
+ int irq;
+ const char *name;
+
+ sc = device_get_softc(dev);
+ sc->sc_dev = dev;
+
+ sc->sc_mem_rid = 0;
+ sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
+ &sc->sc_mem_rid, RF_ACTIVE);
+ if (sc->sc_mem_res == NULL) {
+ device_printf(dev, "can't allocate memory resource\n");
+ return (ENXIO);
+ }
+
+ sc->sc_irq_rid = 0;
+ sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
+ &sc->sc_irq_rid, RF_ACTIVE);
+
+ if (sc->sc_irq_res == NULL) {
+ device_printf(dev, "can't allocate IRQ resource\n");
+ goto free_mem;
+ }
+
+ ret = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
+ pl061_intr, NULL, sc, &sc->sc_irq_hdlr);
+ if (ret) {
+ device_printf(dev, "can't setup IRQ\n");
+ goto free_pic;
+ }
+
+ name = device_get_nameunit(dev);
+
+ for (irq = 0; irq < PL061_NUM_GPIO; irq++) {
+ if (bootverbose) {
+ device_printf(dev,
+ "trying to register pin %d name %s\n", irq, name);
+ }
+ sc->sc_isrcs[irq].irq = irq;
+ sc->sc_isrcs[irq].mode = GPIO_INTR_CONFORM;
+ ret = intr_isrc_register(PIC_INTR_ISRC(sc, irq), dev, 0,
+ "%s", name);
+ if (ret) {
+ device_printf(dev, "can't register isrc %d\n", ret);
+ goto free_isrc;
+ }
+ }
+
+ sc->sc_busdev = gpiobus_attach_bus(dev);
+ if (sc->sc_busdev == NULL) {
+ device_printf(dev, "couldn't attach gpio bus\n");
+ goto free_isrc;
+ }
+
+ mtx_init(&sc->sc_mtx, device_get_nameunit(dev), "pl061", MTX_SPIN);
+
+ return (0);
+
+free_isrc:
+ /*
+ * XXX isrc_release_counters() not implemented
+ * for (irq = 0; irq < PL061_NUM_GPIO; irq++)
+ * intr_isrc_deregister(PIC_INTR_ISRC(sc, irq));
+ */
+ bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
+ sc->sc_irq_res);
+free_pic:
+ /*
+ * XXX intr_pic_deregister: not implemented
+ * intr_pic_deregister(dev, 0);
+ */
+
+free_mem:
+ bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_mem_rid,
+ sc->sc_mem_res);
+
+ return (ENXIO);
+
+}
+
+int
+pl061_detach(device_t dev)
+{
+ struct pl061_softc *sc;
+ sc = device_get_softc(dev);
+
+ if (sc->sc_busdev)
+ gpiobus_detach_bus(dev);
+
+ if (sc->sc_irq_hdlr != NULL)
+ bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_hdlr);
+
+ if (sc->sc_irq_res != NULL)
+ bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irq_rid,
+ sc->sc_irq_res);
+
+ if (sc->sc_mem_res != NULL)
+ bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_mem_rid,
+ sc->sc_mem_res);
+ PL061_LOCK_DESTROY(sc);
+ return (0);
+}
+
+static device_method_t pl061_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_attach, pl061_attach),
+ DEVMETHOD(device_detach, pl061_detach),
+
+ /* GPIO protocol */
+ DEVMETHOD(gpio_get_bus, pl061_get_bus),
+ DEVMETHOD(gpio_pin_max, pl061_pin_max),
+ DEVMETHOD(gpio_pin_getname, pl061_pin_getname),
+ DEVMETHOD(gpio_pin_getflags, pl061_pin_getflags),
+ DEVMETHOD(gpio_pin_getcaps, pl061_pin_getcaps),
+ DEVMETHOD(gpio_pin_setflags, pl061_pin_setflags),
+ DEVMETHOD(gpio_pin_get, pl061_pin_get),
+ DEVMETHOD(gpio_pin_set, pl061_pin_set),
+ DEVMETHOD(gpio_pin_toggle, pl061_pin_toggle),
+
+ /* Interrupt controller interface */
+ DEVMETHOD(pic_disable_intr, pl061_pic_disable_intr),
+ DEVMETHOD(pic_enable_intr, pl061_pic_enable_intr),
+ DEVMETHOD(pic_map_intr, pl061_pic_map_intr),
+ DEVMETHOD(pic_setup_intr, pl061_pic_setup_intr),
+ DEVMETHOD(pic_teardown_intr, pl061_pic_teardown_intr),
+ DEVMETHOD(pic_post_filter, pl061_pic_post_filter),
+ DEVMETHOD(pic_post_ithread, pl061_pic_post_ithread),
+ DEVMETHOD(pic_pre_ithread, pl061_pic_pre_ithread),
+
+ DEVMETHOD_END
+};
+
+DEFINE_CLASS_0(pl061, pl061_driver, pl061_methods, sizeof(struct pl061_softc));
Added: head/sys/dev/gpio/pl061.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/gpio/pl061.h Tue Sep 8 11:35:35 2020 (r365450)
@@ -0,0 +1,59 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 Amazon.com, Inc. or its affiliates.
+ * 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, 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef __DEV_PL061_H__
+#define __DEV_PL061_H__
+
+DECLARE_CLASS(pl061_driver);
+
+#define PL061_NUM_GPIO 8
+
+struct pl061_pin_irqsrc {
+ struct intr_irqsrc isrc;
+ uint32_t irq;
+ uint32_t mode;
+};
+
+struct pl061_softc {
+ device_t sc_dev;
+ device_t sc_busdev;
+ struct mtx sc_mtx;
+ struct resource *sc_mem_res;
+ struct resource *sc_irq_res;
+ void *sc_irq_hdlr;
+ int sc_mem_rid;
+ int sc_irq_rid;
+ struct pl061_pin_irqsrc sc_isrcs[PL061_NUM_GPIO];
+};
+
+int pl061_attach(device_t);
+int pl061_detach(device_t);
+
+#endif /* __DEV_PL061_H__ */
Added: head/sys/dev/gpio/pl061_acpi.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/gpio/pl061_acpi.c Tue Sep 8 11:35:35 2020 (r365450)
@@ -0,0 +1,103 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2020 Amazon.com, Inc. or its affiliates.
+ * 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, 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 "opt_acpi.h"
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+
+#include <machine/intr.h>
+
+#include <contrib/dev/acpica/include/acpi.h>
+#include <contrib/dev/acpica/include/accommon.h>
+
+#include <dev/acpica/acpivar.h>
+#include <dev/gpio/gpiobusvar.h>
+
+#include "pl061.h"
+
+static char *gpio_ids[] = { "ARMH0061", NULL };
+
+static int
+pl061_acpi_probe(device_t dev)
+{
+ int rv;
+
+ if (acpi_disabled("gpio"))
+ return (ENXIO);
+
+ rv = ACPI_ID_PROBE(device_get_parent(dev), dev, gpio_ids, NULL);
+
+ if (rv <= 0)
+ device_set_desc(dev, "Arm PL061 GPIO Controller");
+
+ return (rv);
+}
+
+static int
+pl061_acpi_attach(device_t dev)
+{
+ int error;
+
+ error = pl061_attach(dev);
+ if (error != 0)
+ return (error);
+
+ if (!intr_pic_register(dev, ACPI_INTR_XREF)) {
+ device_printf(dev, "couldn't register PIC\n");
+ pl061_detach(dev);
+ error = ENXIO;
+ }
+
+ return (error);
+}
+
+static device_method_t pl061_acpi_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, pl061_acpi_probe),
+ DEVMETHOD(device_attach, pl061_acpi_attach),
+
+ DEVMETHOD_END
+};
+
+DEFINE_CLASS_1(pl061, pl061_acpi_driver, pl061_acpi_methods,
+ sizeof(struct pl061_softc), pl061_driver);
+
+static devclass_t pl061_devclass;
+
+DRIVER_MODULE(pl061, acpi, pl061_driver, pl061_devclass, NULL, NULL);
+MODULE_DEPEND(pl061, acpi, 1, 1, 1);
+MODULE_DEPEND(pl061, gpiobus, 1, 1, 1);
Added: head/sys/dev/gpio/pl061_fdt.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/gpio/pl061_fdt.c Tue Sep 8 11:35:35 2020 (r365450)
@@ -0,0 +1,97 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2020 Andrew Turner
+ *
+ * This work was supported by Innovate UK project 105694, "Digital Security
+ * by Design (DSbD) Technology Platform Prototype".
+ *
+ * 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 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/kernel.h>
+#include <sys/module.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <dev/gpio/gpiobusvar.h>
+
+#include "pl061.h"
+
+static int
+pl061_fdt_probe(device_t dev)
+{
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (!ofw_bus_is_compatible(dev, "arm,pl061"))
+ return (ENXIO);
+
+ device_set_desc(dev, "Arm PL061 GPIO Controller");
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+pl061_fdt_attach(device_t dev)
+{
+ int error;
+
+ error = pl061_attach(dev);
+ if (error != 0)
+ return (error);
+
+ if (!intr_pic_register(dev, OF_xref_from_node(ofw_bus_get_node(dev)))) {
+ device_printf(dev, "couldn't register PIC\n");
+ pl061_detach(dev);
+ error = ENXIO;
+ }
+
+ return (error);
+}
+
+static device_method_t pl061_fdt_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, pl061_fdt_probe),
+ DEVMETHOD(device_attach, pl061_fdt_attach),
+
+ DEVMETHOD_END
+};
+
+DEFINE_CLASS_1(gpio, pl061_fdt_driver, pl061_fdt_methods,
+ sizeof(struct pl061_softc), pl061_driver);
+
+static devclass_t pl061_devclass;
+
+EARLY_DRIVER_MODULE(pl061, ofwbus, pl061_fdt_driver, pl061_devclass, NULL, NULL,
+ BUS_PASS_INTERRUPT + BUS_PASS_ORDER_LATE);
+MODULE_DEPEND(pl061, gpiobus, 1, 1, 1);
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