pmsu.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * Copyright (c) 2015 Semihalf.
    3  * Copyright (c) 2015 Stormshield.
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    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.
   14  *
   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
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD$");
   30 
   31 #include <sys/param.h>
   32 #include <sys/bus.h>
   33 #include <sys/conf.h>
   34 #include <sys/rman.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>
   40 
   41 #include <vm/vm.h>
   42 #include <vm/pmap.h>
   43 
   44 #include <machine/cpu.h>
   45 #include <machine/fdt.h>
   46 #include <machine/smp.h>
   47 
   48 #include <dev/ofw/ofw_bus_subr.h>
   49 
   50 #include <arm/mv/mvreg.h>
   51 
   52 #include "pmsu.h"
   53 
   54 static struct resource_spec pmsu_spec[] = {
   55         { SYS_RES_MEMORY,       0,      RF_ACTIVE },
   56         { -1, 0 }
   57 };
   58 
   59 struct pmsu_softc {
   60         device_t        dev;
   61         struct resource *res;
   62 };
   63 
   64 static int pmsu_probe(device_t dev);
   65 static int pmsu_attach(device_t dev);
   66 static int pmsu_detach(device_t dev);
   67 
   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),
   72         { 0, 0 }
   73 };
   74 
   75 static driver_t pmsu_driver = {
   76         "pmsu",
   77         pmsu_methods,
   78         sizeof(struct pmsu_softc)
   79 };
   80 
   81 DRIVER_MODULE(pmsu, simplebus, pmsu_driver, 0, 0);
   82 DRIVER_MODULE(pmsu, ofwbus, pmsu_driver, 0, 0);
   83 
   84 static int
   85 pmsu_probe(device_t dev)
   86 {
   87 
   88         if (!ofw_bus_status_okay(dev))
   89                 return (ENXIO);
   90 
   91         if (!ofw_bus_is_compatible(dev, "marvell,armada-380-pmsu"))
   92                 return (ENXIO);
   93 
   94         device_set_desc(dev, "Power Management Service Unit");
   95 
   96         return (BUS_PROBE_DEFAULT);
   97 }
   98 
   99 static int
  100 pmsu_attach(device_t dev)
  101 {
  102         struct pmsu_softc *sc;
  103         int err;
  104 
  105         sc = device_get_softc(dev);
  106         sc->dev = dev;
  107 
  108         err = bus_alloc_resources(dev, pmsu_spec, &sc->res);
  109         if (err != 0) {
  110                 device_printf(dev, "could not allocate resources\n");
  111                 return (ENXIO);
  112         }
  113 
  114         return (0);
  115 }
  116 
  117 static int
  118 pmsu_detach(device_t dev)
  119 {
  120         struct pmsu_softc *sc;
  121 
  122         sc = device_get_softc(dev);
  123 
  124         bus_release_resources(dev, pmsu_spec, &sc->res);
  125 
  126         return (0);
  127 }
  128 
  129 #ifdef SMP
  130 int
  131 pmsu_boot_secondary_cpu(void)
  132 {
  133         bus_space_handle_t vaddr;
  134         int rv;
  135 
  136         rv = bus_space_map(fdtbus_bs_tag, (bus_addr_t)MV_PMSU_BASE, MV_PMSU_REGS_LEN,
  137             0, &vaddr);
  138         if (rv != 0)
  139                 return (rv);
  140 
  141         /* Boot cpu1 */
  142         bus_space_write_4(fdtbus_bs_tag, vaddr, PMSU_BOOT_ADDR_REDIRECT_OFFSET(1),
  143             pmap_kextract((vm_offset_t)mpentry));
  144 
  145         dcache_wbinv_poc_all();
  146         dsb();
  147         sev();
  148 
  149         bus_space_unmap(fdtbus_bs_tag, vaddr, MV_PMSU_REGS_LEN);
  150 
  151         return (0);
  152 }
  153 #endif

Cache object: c28dfc898fba7989fc85249df069a64d

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/arm/mv/armada38x/pmsu.c

FreeBSD/Linux Kernel Cross Reference
sys/arm/mv/armada38x/pmsu.c