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
tpm_isa_probe(device_t dev)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