44d027bb5d
icu is a interrupt concentrator in the CP110 block and gicp
is a gic extension to allow interrupts in the CP block to be turned
into GIC SPI interrupts
Sponsored by: Rubicon Communications, LLC ("Netgate")
290 lines
7.2 KiB
C
290 lines
7.2 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2018 Rubicon Communications, LLC (Netgate)
|
|
*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#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/rman.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.h>
|
|
#include <machine/intr.h>
|
|
|
|
#include <dev/fdt/simplebus.h>
|
|
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
|
|
#include "pic_if.h"
|
|
|
|
#define MV_AP806_GICP_MAX_NIRQS 207
|
|
|
|
struct mv_ap806_gicp_softc {
|
|
device_t dev;
|
|
device_t parent;
|
|
struct resource *res;
|
|
|
|
ssize_t spi_ranges_cnt;
|
|
uint32_t *spi_ranges;
|
|
};
|
|
|
|
static struct ofw_compat_data compat_data[] = {
|
|
{"marvell,ap806-gicp", 1},
|
|
{NULL, 0}
|
|
};
|
|
|
|
#define RD4(sc, reg) bus_read_4((sc)->res, (reg))
|
|
#define WR4(sc, reg, val) bus_write_4((sc)->res, (reg), (val))
|
|
|
|
static int
|
|
mv_ap806_gicp_probe(device_t dev)
|
|
{
|
|
|
|
if (!ofw_bus_status_okay(dev))
|
|
return (ENXIO);
|
|
|
|
if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "Marvell GICP");
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
static int
|
|
mv_ap806_gicp_attach(device_t dev)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
phandle_t node, xref, intr_parent;
|
|
|
|
sc = device_get_softc(dev);
|
|
sc->dev = dev;
|
|
node = ofw_bus_get_node(dev);
|
|
|
|
/* Look for our parent */
|
|
if ((intr_parent = ofw_bus_find_iparent(node)) == 0) {
|
|
device_printf(dev, "Cannot find our parent interrupt controller\n");
|
|
return (ENXIO);
|
|
}
|
|
if ((sc->parent = OF_device_from_xref(intr_parent)) == NULL) {
|
|
device_printf(dev, "cannot find parent interrupt controller device\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
sc->spi_ranges_cnt = OF_getencprop_alloc(node, "marvell,spi-ranges",
|
|
(void **)&sc->spi_ranges);
|
|
|
|
xref = OF_xref_from_node(node);
|
|
if (intr_pic_register(dev, xref) == NULL) {
|
|
device_printf(dev, "Cannot register GICP\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
OF_device_register_xref(xref, dev);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
mv_ap806_gicp_detach(device_t dev)
|
|
{
|
|
|
|
return (EBUSY);
|
|
}
|
|
|
|
static int
|
|
mv_ap806_gicp_activate_intr(device_t dev, struct intr_irqsrc *isrc,
|
|
struct resource *res, struct intr_map_data *data)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
return (PIC_ACTIVATE_INTR(sc->parent, isrc, res, data));
|
|
}
|
|
|
|
static void
|
|
mv_ap806_gicp_enable_intr(device_t dev, struct intr_irqsrc *isrc)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
PIC_ENABLE_INTR(sc->parent, isrc);
|
|
}
|
|
|
|
static void
|
|
mv_ap806_gicp_disable_intr(device_t dev, struct intr_irqsrc *isrc)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
PIC_DISABLE_INTR(sc->parent, isrc);
|
|
}
|
|
|
|
static int
|
|
mv_ap806_gicp_map_intr(device_t dev, struct intr_map_data *data,
|
|
struct intr_irqsrc **isrcp)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
struct intr_map_data_fdt *daf;
|
|
uint32_t group, irq_num, irq_type;
|
|
int i;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
if (data->type != INTR_MAP_DATA_FDT)
|
|
return (ENOTSUP);
|
|
|
|
daf = (struct intr_map_data_fdt *)data;
|
|
if (daf->ncells != 3 || daf->cells[0] >= MV_AP806_GICP_MAX_NIRQS)
|
|
return (EINVAL);
|
|
|
|
group = daf->cells[0];
|
|
irq_num = daf->cells[1];
|
|
irq_type = daf->cells[2];
|
|
|
|
/* Map the interrupt number to spi number */
|
|
for (i = 0; i < sc->spi_ranges_cnt / 2; i += 2) {
|
|
if (irq_num < sc->spi_ranges[i + 1]) {
|
|
irq_num += sc->spi_ranges[i];
|
|
break;
|
|
}
|
|
|
|
irq_num -= sc->spi_ranges[i];
|
|
}
|
|
|
|
daf->cells[1] = irq_num - 32;
|
|
|
|
return (PIC_MAP_INTR(sc->parent, data, isrcp));
|
|
}
|
|
|
|
static int
|
|
mv_ap806_gicp_deactivate_intr(device_t dev, struct intr_irqsrc *isrc,
|
|
struct resource *res, struct intr_map_data *data)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
return (PIC_DEACTIVATE_INTR(sc->parent, isrc, res, data));
|
|
}
|
|
|
|
static int
|
|
mv_ap806_gicp_setup_intr(device_t dev, struct intr_irqsrc *isrc,
|
|
struct resource *res, struct intr_map_data *data)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
return (PIC_SETUP_INTR(sc->parent, isrc, res, data));
|
|
}
|
|
|
|
static int
|
|
mv_ap806_gicp_teardown_intr(device_t dev, struct intr_irqsrc *isrc,
|
|
struct resource *res, struct intr_map_data *data)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
return (PIC_TEARDOWN_INTR(sc->parent, isrc, res, data));
|
|
}
|
|
|
|
static void
|
|
mv_ap806_gicp_pre_ithread(device_t dev, struct intr_irqsrc *isrc)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
PIC_PRE_ITHREAD(sc->parent, isrc);
|
|
}
|
|
|
|
static void
|
|
mv_ap806_gicp_post_ithread(device_t dev, struct intr_irqsrc *isrc)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
PIC_POST_ITHREAD(sc->parent, isrc);
|
|
}
|
|
|
|
static void
|
|
mv_ap806_gicp_post_filter(device_t dev, struct intr_irqsrc *isrc)
|
|
{
|
|
struct mv_ap806_gicp_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
PIC_POST_FILTER(sc->parent, isrc);
|
|
}
|
|
|
|
static device_method_t mv_ap806_gicp_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, mv_ap806_gicp_probe),
|
|
DEVMETHOD(device_attach, mv_ap806_gicp_attach),
|
|
DEVMETHOD(device_detach, mv_ap806_gicp_detach),
|
|
|
|
/* Interrupt controller interface */
|
|
DEVMETHOD(pic_activate_intr, mv_ap806_gicp_activate_intr),
|
|
DEVMETHOD(pic_disable_intr, mv_ap806_gicp_disable_intr),
|
|
DEVMETHOD(pic_enable_intr, mv_ap806_gicp_enable_intr),
|
|
DEVMETHOD(pic_map_intr, mv_ap806_gicp_map_intr),
|
|
DEVMETHOD(pic_deactivate_intr, mv_ap806_gicp_deactivate_intr),
|
|
DEVMETHOD(pic_setup_intr, mv_ap806_gicp_setup_intr),
|
|
DEVMETHOD(pic_teardown_intr, mv_ap806_gicp_teardown_intr),
|
|
DEVMETHOD(pic_post_filter, mv_ap806_gicp_post_filter),
|
|
DEVMETHOD(pic_post_ithread, mv_ap806_gicp_post_ithread),
|
|
DEVMETHOD(pic_pre_ithread, mv_ap806_gicp_pre_ithread),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
static devclass_t mv_ap806_gicp_devclass;
|
|
|
|
static driver_t mv_ap806_gicp_driver = {
|
|
"mv_ap806_gicp",
|
|
mv_ap806_gicp_methods,
|
|
sizeof(struct mv_ap806_gicp_softc),
|
|
};
|
|
|
|
EARLY_DRIVER_MODULE(mv_ap806_gicp, simplebus, mv_ap806_gicp_driver,
|
|
mv_ap806_gicp_devclass, 0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);
|