2 * Copyright (c) 2015 Semihalf.
3 * Copyright (c) 2015 Stormshield.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
35 #include <sys/types.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38 #include <sys/resource.h>
39 #include <sys/systm.h>
44 #include <machine/cpu.h>
45 #include <machine/fdt.h>
46 #include <machine/smp.h>
48 #include <dev/ofw/ofw_bus_subr.h>
50 #include <arm/mv/mvreg.h>
54 static struct resource_spec pmsu_spec[] = {
55 { SYS_RES_MEMORY, 0, RF_ACTIVE },
64 static int pmsu_probe(device_t dev);
65 static int pmsu_attach(device_t dev);
66 static int pmsu_detach(device_t dev);
68 static device_method_t pmsu_methods[] = {
69 DEVMETHOD(device_probe, pmsu_probe),
70 DEVMETHOD(device_attach, pmsu_attach),
71 DEVMETHOD(device_detach, pmsu_detach),
76 static driver_t pmsu_driver = {
79 sizeof(struct pmsu_softc)
82 static devclass_t pmsu_devclass;
84 DRIVER_MODULE(pmsu, simplebus, pmsu_driver, pmsu_devclass, 0, 0);
85 DRIVER_MODULE(pmsu, ofwbus, pmsu_driver, pmsu_devclass, 0, 0);
88 pmsu_probe(device_t dev)
91 if (!ofw_bus_status_okay(dev))
94 if (!ofw_bus_is_compatible(dev, "marvell,armada-380-pmsu"))
97 device_set_desc(dev, "Power Management Service Unit");
99 return (BUS_PROBE_DEFAULT);
103 pmsu_attach(device_t dev)
105 struct pmsu_softc *sc;
108 sc = device_get_softc(dev);
111 err = bus_alloc_resources(dev, pmsu_spec, &sc->res);
113 device_printf(dev, "could not allocate resources\n");
121 pmsu_detach(device_t dev)
123 struct pmsu_softc *sc;
125 sc = device_get_softc(dev);
127 bus_release_resources(dev, pmsu_spec, &sc->res);
134 pmsu_boot_secondary_cpu(void)
136 bus_space_handle_t vaddr;
139 rv = bus_space_map(fdtbus_bs_tag, (bus_addr_t)MV_PMSU_BASE, MV_PMSU_REGS_LEN,
145 bus_space_write_4(fdtbus_bs_tag, vaddr, PMSU_BOOT_ADDR_REDIRECT_OFFSET(1),
146 pmap_kextract((vm_offset_t)mpentry));
148 dcache_wbinv_poc_all();
152 bus_space_unmap(fdtbus_bs_tag, vaddr, MV_PMSU_REGS_LEN);