A driver for Intel Rapid Start Technology ACPI device.
Note that it is just for 'Advanced' configuration for Rapid start technology.
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133
sys/dev/acpi_support/acpi_rapidstart.c
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133
sys/dev/acpi_support/acpi_rapidstart.c
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/*-
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* Copyright (c) 2013 Takanori Watanabe
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_acpi.h"
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <contrib/dev/acpica/include/acpi.h>
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#include "acpi_if.h"
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#include <sys/module.h>
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#include <dev/acpica/acpivar.h>
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#include <sys/sysctl.h>
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static int sysctl_acpi_rapidstart_gen_handler(SYSCTL_HANDLER_ARGS);
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static struct acpi_rapidstart_name_list
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{
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char *nodename;
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char *getmethod;
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char *setmethod;
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char *comment;
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} acpi_rapidstart_oids[] ={
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{"ffs","GFFS","SFFS","Flash Fast Store Flag"},
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{"ftv","GFTV","SFTV","Time value"},
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{NULL, NULL, NULL, NULL}
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};
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struct acpi_rapidstart_softc {
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struct sysctl_ctx_list *sysctl_ctx;
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struct sysctl_oid *sysctl_tree;
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};
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static char *rapidstart_ids[] = {"INT3392", NULL};
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static int
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acpi_rapidstart_probe(device_t dev)
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{
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if (acpi_disabled("rapidstart") ||
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ACPI_ID_PROBE(device_get_parent(dev), dev, rapidstart_ids) == NULL ||
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device_get_unit(dev) != 0)
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return (ENXIO);
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device_set_desc(dev, "Intel Rapid Start ACPI device");
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return (0);
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}
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static int
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acpi_rapidstart_attach(device_t dev)
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{
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struct acpi_rapidstart_softc *sc;
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int i;
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sc = device_get_softc(dev);
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sc->sysctl_ctx = device_get_sysctl_ctx(dev);
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sc->sysctl_tree = device_get_sysctl_tree(dev);
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for (i = 0 ; acpi_rapidstart_oids[i].nodename != NULL; i++){
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SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
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SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
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i, acpi_rapidstart_oids[i].nodename , CTLTYPE_INT |
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((acpi_rapidstart_oids[i].setmethod)? CTLFLAG_RW: CTLFLAG_RD),
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dev, i, sysctl_acpi_rapidstart_gen_handler, "I",
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acpi_rapidstart_oids[i].comment);
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}
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return (0);
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}
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static int
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sysctl_acpi_rapidstart_gen_handler(SYSCTL_HANDLER_ARGS)
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{
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device_t dev = arg1;
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int function = oidp->oid_arg2;
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int error = 0, val;
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acpi_GetInteger(acpi_get_handle(dev),
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acpi_rapidstart_oids[function].getmethod, &val);
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error = sysctl_handle_int(oidp, &val, 0, req);
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if (error || !req->newptr || !acpi_rapidstart_oids[function].setmethod)
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return (error);
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acpi_SetInteger(acpi_get_handle(dev),
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acpi_rapidstart_oids[function].setmethod, val);
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return (0);
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}
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static device_method_t acpi_rapidstart_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, acpi_rapidstart_probe),
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DEVMETHOD(device_attach, acpi_rapidstart_attach),
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DEVMETHOD_END
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};
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static driver_t acpi_rapidstart_driver = {
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"acpi_rapidstart",
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acpi_rapidstart_methods,
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sizeof(struct acpi_rapidstart_softc),
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};
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static devclass_t acpi_rapidstart_devclass;
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DRIVER_MODULE(acpi_rapidstart, acpi, acpi_rapidstart_driver, acpi_rapidstart_devclass,
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0, 0);
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MODULE_DEPEND(acpi_rapidstart, acpi, 1, 1, 1);
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8
sys/modules/acpi/acpi_rapidstart/Makefile
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8
sys/modules/acpi/acpi_rapidstart/Makefile
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# $FreeBSD$
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.PATH: ${.CURDIR}/../../../dev/acpi_support
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KMOD= acpi_rapidstart
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SRCS= acpi_rapidstart.c opt_acpi.h device_if.h bus_if.h acpi_if.h
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.include <bsd.kmod.mk>
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