Changeset View
Changeset View
Standalone View
Standalone View
head/sys/riscv/riscv/riscv_syscon.c
| Property | Old Value | New Value |
|---|---|---|
| svn:eol-style | null | native \ No newline at end of property |
| svn:keywords | null | FreeBSD=%H \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| /*- | |||||
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
| * | |||||
| * Copyright (c) 2018 Kyle Evans <kevans@FreeBSD.org> | |||||
| * Copyright (c) 2020 Jessica Clarke <jrtc27@FreeBSD.org> | |||||
| * | |||||
| * 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. | |||||
| */ | |||||
| /* | |||||
| * RISC-V syscon driver. Used as a generic interface by QEMU's virt machine for | |||||
| * describing the SiFive test finisher as a power and reset controller. | |||||
| */ | |||||
| #include <sys/cdefs.h> | |||||
| __FBSDID("$FreeBSD$"); | |||||
| #include <sys/param.h> | |||||
| #include <sys/bus.h> | |||||
| #include <sys/kernel.h> | |||||
| #include <sys/module.h> | |||||
| #include <sys/mutex.h> | |||||
| #include <sys/rman.h> | |||||
| #include <machine/bus.h> | |||||
| #include <dev/ofw/openfirm.h> | |||||
| #include <dev/ofw/ofw_bus.h> | |||||
| #include <dev/ofw/ofw_bus_subr.h> | |||||
| #include <dev/extres/syscon/syscon.h> | |||||
| #include <dev/extres/syscon/syscon_generic.h> | |||||
| static struct ofw_compat_data compat_data[] = { | |||||
| {"sifive,test0", 1}, | |||||
| {"sifive,test1", 1}, | |||||
| {NULL, 0} | |||||
| }; | |||||
| static int | |||||
| riscv_syscon_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, "RISC-V syscon"); | |||||
| return (BUS_PROBE_DEFAULT); | |||||
| } | |||||
| static device_method_t riscv_syscon_methods[] = { | |||||
| DEVMETHOD(device_probe, riscv_syscon_probe), | |||||
| DEVMETHOD_END | |||||
| }; | |||||
| DEFINE_CLASS_1(riscv_syscon, riscv_syscon_driver, riscv_syscon_methods, | |||||
| sizeof(struct syscon_generic_softc), syscon_generic_driver); | |||||
| static devclass_t riscv_syscon_devclass; | |||||
| /* riscv_syscon needs to attach prior to syscon_power */ | |||||
| EARLY_DRIVER_MODULE(riscv_syscon, simplebus, riscv_syscon_driver, | |||||
| riscv_syscon_devclass, 0, 0, BUS_PASS_SCHEDULER + BUS_PASS_ORDER_LAST); | |||||
| MODULE_VERSION(riscv_syscon, 1); | |||||