1 /* 2 * Copyright (c) 2008, 2009 Michael Shalayeff 3 * Copyright (c) 2009, 2010 Hans-Joerg Hoexer 4 * All rights reserved. 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN 15 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 16 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 * 18 * $FreeBSD: src/sys/dev/tpm/tpm_acpi.c,v 1.1 2010/08/12 00:16:18 takawata Exp $ 19 */ 20 21 #include <sys/param.h> 22 #include <sys/systm.h> 23 #include <sys/kernel.h> 24 #include <sys/malloc.h> 25 #include <sys/proc.h> 26 27 #include <sys/module.h> 28 #include <sys/conf.h> 29 #include <sys/uio.h> 30 #include <sys/bus.h> 31 32 #include <sys/rman.h> 33 34 #include <machine/md_var.h> 35 36 #include <bus/isa/isareg.h> 37 #include <bus/isa/isavar.h> 38 #include "tpmvar.h" 39 40 #include "opt_acpi.h" 41 #include <contrib/dev/acpica/source/include/acpi.h> 42 #include <contrib/dev/acpica/source/include/accommon.h> 43 #include <dev/acpica/acpivar.h> 44 45 46 47 char *tpm_ids[] = {"ATM1200", "BCM0102", "INTC0102", "SNO3504", "WEC1000", 48 "PNP0C31", NULL}; 49 50 static int 51 tpm_acpi_probe(device_t dev) 52 { 53 if (ACPI_ID_PROBE(device_get_parent(dev), dev, tpm_ids) != NULL) { 54 device_set_desc(dev, "Trusted Platform Module"); 55 return BUS_PROBE_DEFAULT; 56 } 57 58 return ENXIO; 59 } 60 61 static device_method_t tpm_acpi_methods[] = { 62 #if 0 63 /*In some case, TPM existance is found only in TPCA header*/ 64 DEVMETHOD(device_identify, tpm_acpi_identify), 65 #endif 66 67 DEVMETHOD(device_probe, tpm_acpi_probe), 68 DEVMETHOD(device_attach, tpm_attach), 69 DEVMETHOD(device_detach, tpm_detach), 70 DEVMETHOD(device_suspend, tpm_suspend), 71 DEVMETHOD(device_resume, tpm_resume), 72 { 0, 0 } 73 }; 74 static driver_t tpm_acpi_driver = { 75 "tpm", tpm_acpi_methods, sizeof(struct tpm_softc), 76 }; 77 78 devclass_t tpm_devclass; 79 DRIVER_MODULE(tpm, acpi, tpm_acpi_driver, tpm_devclass, NULL, NULL); 80