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: head/sys/dev/tpm/tpm_isa.c 211201 2010-08-12 00:16:18Z takawata $ 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 39 #include "tpmvar.h" 40 41 static int 42 tpm_isa_probe(device_t dev) 43 { 44 bus_space_tag_t iot; 45 bus_space_handle_t ioh; 46 struct resource *mem_res; 47 int rv, mem_rid; 48 49 mem_rid = 0; 50 mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &mem_rid, 51 RF_ACTIVE); 52 if (mem_res == NULL) 53 return (ENXIO); 54 iot = rman_get_bustag(mem_res); 55 ioh = rman_get_bushandle(mem_res); 56 57 if ((rv = tpm_tis12_probe(iot, ioh))) 58 device_set_desc(dev, "Trusted Platform Module"); 59 60 bus_release_resource(dev, SYS_RES_MEMORY, mem_rid, mem_res); 61 return rv ? 0 : ENXIO; 62 } 63 64 static device_method_t tpm_methods[] = { 65 #if 0 66 DEVMETHOD(device_identify, tpm_identify), 67 #endif 68 DEVMETHOD(device_probe, tpm_isa_probe), 69 DEVMETHOD(device_attach, tpm_attach), 70 DEVMETHOD(device_detach, tpm_detach), 71 DEVMETHOD(device_suspend, tpm_suspend), 72 DEVMETHOD(device_resume, tpm_resume), 73 { 0, 0 } 74 }; 75 76 static driver_t tpm_driver = { 77 "tpm", tpm_methods, sizeof(struct tpm_softc), 78 }; 79 80 static devclass_t tpm_devclass; 81 82 DRIVER_MODULE(tpm, isa, tpm_driver, tpm_devclass, NULL, NULL); 83