1 /*- 2 * Copyright (c) 2013 Takanori Watanabe 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD$"); 29 30 #include "opt_acpi.h" 31 #include <sys/param.h> 32 #include <sys/kernel.h> 33 #include <sys/bus.h> 34 35 #include <contrib/dev/acpica/include/acpi.h> 36 37 #include "acpi_if.h" 38 #include <sys/module.h> 39 #include <dev/acpica/acpivar.h> 40 #include <sys/sysctl.h> 41 static int sysctl_acpi_rapidstart_gen_handler(SYSCTL_HANDLER_ARGS); 42 43 44 static struct acpi_rapidstart_name_list 45 { 46 char *nodename; 47 char *getmethod; 48 char *setmethod; 49 char *comment; 50 } acpi_rapidstart_oids[] ={ 51 {"ffs","GFFS","SFFS","Flash Fast Store Flag"}, 52 {"ftv","GFTV","SFTV","Time value"}, 53 {NULL, NULL, NULL, NULL} 54 }; 55 56 struct acpi_rapidstart_softc { 57 struct sysctl_ctx_list *sysctl_ctx; 58 struct sysctl_oid *sysctl_tree; 59 60 }; 61 static char *rapidstart_ids[] = {"INT3392", NULL}; 62 static int 63 acpi_rapidstart_probe(device_t dev) 64 { 65 if (acpi_disabled("rapidstart") || 66 ACPI_ID_PROBE(device_get_parent(dev), dev, rapidstart_ids) == NULL || 67 device_get_unit(dev) != 0) 68 return (ENXIO); 69 70 device_set_desc(dev, "Intel Rapid Start ACPI device"); 71 72 return (0); 73 74 } 75 76 static int 77 acpi_rapidstart_attach(device_t dev) 78 { 79 struct acpi_rapidstart_softc *sc; 80 int i; 81 82 sc = device_get_softc(dev); 83 84 sc->sysctl_ctx = device_get_sysctl_ctx(dev); 85 sc->sysctl_tree = device_get_sysctl_tree(dev); 86 for (i = 0 ; acpi_rapidstart_oids[i].nodename != NULL; i++){ 87 if (acpi_rapidstart_oids[i].setmethod != NULL) { 88 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 89 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 90 i, acpi_rapidstart_oids[i].nodename, 91 CTLTYPE_INT | CTLFLAG_RW, 92 dev, i, sysctl_acpi_rapidstart_gen_handler, "I", 93 acpi_rapidstart_oids[i].comment); 94 } else { 95 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 96 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 97 i, acpi_rapidstart_oids[i].nodename, 98 CTLTYPE_INT | CTLFLAG_RD, 99 dev, i, sysctl_acpi_rapidstart_gen_handler, "I", 100 acpi_rapidstart_oids[i].comment); 101 } 102 } 103 return (0); 104 } 105 106 static int 107 sysctl_acpi_rapidstart_gen_handler(SYSCTL_HANDLER_ARGS) 108 { 109 device_t dev = arg1; 110 int function = oidp->oid_arg2; 111 int error = 0, val; 112 113 acpi_GetInteger(acpi_get_handle(dev), 114 acpi_rapidstart_oids[function].getmethod, &val); 115 error = sysctl_handle_int(oidp, &val, 0, req); 116 if (error || !req->newptr || !acpi_rapidstart_oids[function].setmethod) 117 return (error); 118 acpi_SetInteger(acpi_get_handle(dev), 119 acpi_rapidstart_oids[function].setmethod, val); 120 return (0); 121 } 122 123 static device_method_t acpi_rapidstart_methods[] = { 124 /* Device interface */ 125 DEVMETHOD(device_probe, acpi_rapidstart_probe), 126 DEVMETHOD(device_attach, acpi_rapidstart_attach), 127 128 DEVMETHOD_END 129 }; 130 131 static driver_t acpi_rapidstart_driver = { 132 "acpi_rapidstart", 133 acpi_rapidstart_methods, 134 sizeof(struct acpi_rapidstart_softc), 135 }; 136 137 static devclass_t acpi_rapidstart_devclass; 138 139 DRIVER_MODULE(acpi_rapidstart, acpi, acpi_rapidstart_driver, acpi_rapidstart_devclass, 140 0, 0); 141 MODULE_DEPEND(acpi_rapidstart, acpi, 1, 1, 1); 142 143