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[src/trunk]: src Improvements in tpm(4):
details: https://anonhg.NetBSD.org/src/rev/72f091c30f2c
branches: trunk
changeset: 460113:72f091c30f2c
user: maxv <maxv%NetBSD.org@localhost>
date: Tue Oct 08 18:43:02 2019 +0000
description:
Improvements in tpm(4):
- Remove interrupt support, do polling only, avoids unnecessary trouble.
- Simplify a few things.
- Fix the suspend function, the SaveState command is 0x98, not 0x9C.
- Make the driver MP-safe.
- Sync the man page with reality.
diffstat:
share/man/man4/tpm.4 | 68 ++++----
sys/dev/acpi/tpm_acpi.c | 46 ++----
sys/dev/ic/tpm.c | 352 ++++++++++-------------------------------------
sys/dev/ic/tpmreg.h | 3 +-
sys/dev/ic/tpmvar.h | 41 +----
sys/dev/isa/tpm_isa.c | 83 ++++++----
6 files changed, 179 insertions(+), 414 deletions(-)
diffs (truncated from 1059 to 300 lines):
diff -r e9855db22ae1 -r 72f091c30f2c share/man/man4/tpm.4
--- a/share/man/man4/tpm.4 Tue Oct 08 18:02:46 2019 +0000
+++ b/share/man/man4/tpm.4 Tue Oct 08 18:43:02 2019 +0000
@@ -1,20 +1,33 @@
-.\" $NetBSD: tpm.4,v 1.4 2018/02/22 01:40:49 pgoyette Exp $
-.\"
-.\" Copyright (c) 2010 Hans-Jörg Höxer, <Hans-Joerg.Hoexer%genua.de@localhost>
+.\" $NetBSD: tpm.4,v 1.5 2019/10/08 18:43:03 maxv Exp $
.\"
-.\" Permission to use, copy, modify, and distribute this software for any
-.\" purpose with or without fee is hereby granted, provided that the above
-.\" copyright notice and this permission notice appear in all copies.
+.\" Copyright (c) 2019 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by Maxime Villard.
.\"
-.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
.\"
-.Dd February 22, 2018
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd October 6, 2019
.Dt TPM 4
.Os
.Sh NAME
@@ -22,40 +35,22 @@
.Nd Trusted Platform Module
.Sh SYNOPSIS
.Cd "tpm* at isa? iomem 0xfed40000"
-.Cd "tpm* at isa? iomem 0xfed40000 irq 7"
.Cd "tpm* at acpi?"
.Sh DESCRIPTION
The
.Nm
-driver provides support for various trusted platform modules (TPM) that can
-store cryptographic keys.
+driver provides support for various Trusted Platform Module (TPM) chips.
.Pp
Supported modules:
.Pp
.Bl -bullet -compact -offset indent
.It
-Atmel 97SC3203
-.It
-Broadcom BCM0102
-.It
-Infineon IFX SLD 9630 TT 1.1 and IFX SLB 9635 TT 1.2
+TPM 2.0 chips over ACPI
.It
-Intel INTC0102
-.It
-Sinosun SNS SSX35
-.It
-STM ST19WP18
-.It
-Winbond WEC WPCT200
+TPM 1.2 chips over ISA
.El
.Pp
-The driver can be configured to use an IRQ by providing a free ISA
-interrupt vector using the keyword
-.Em irq
-in the kernel configuration file or using
-.Xr config 1 .
-If not IRQ is specified, the driver uses polling.
-This is the default configuration.
+Note that the supported interface version is TIS1.2 in each case.
.Sh SEE ALSO
.Xr config 1 ,
.Xr intro 4
@@ -64,6 +59,7 @@
The
.Nm
driver was written by
+.An Maxime Villard ,
.An Michael Shalayeff
and
.An Hans-Joerg Hoexer .
diff -r e9855db22ae1 -r 72f091c30f2c sys/dev/acpi/tpm_acpi.c
--- a/sys/dev/acpi/tpm_acpi.c Tue Oct 08 18:02:46 2019 +0000
+++ b/sys/dev/acpi/tpm_acpi.c Tue Oct 08 18:43:02 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tpm_acpi.c,v 1.8 2019/06/22 12:57:40 maxv Exp $ */
+/* $NetBSD: tpm_acpi.c,v 1.9 2019/10/08 18:43:02 maxv Exp $ */
/*
* Copyright (c) 2012, 2019 The NetBSD Foundation, Inc.
@@ -30,10 +30,9 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tpm_acpi.c,v 1.8 2019/06/22 12:57:40 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tpm_acpi.c,v 1.9 2019/10/08 18:43:02 maxv Exp $");
#include <sys/param.h>
-#include <sys/device.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/bus.h>
@@ -45,8 +44,6 @@
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
-#include <dev/isa/isavar.h>
-
#include "ioconf.h"
#define _COMPONENT ACPI_RESOURCE_COMPONENT
@@ -100,41 +97,41 @@
struct acpi_attach_args *aa = aux;
struct acpi_resources res;
struct acpi_mem *mem;
- struct acpi_irq *irq;
bus_addr_t base;
bus_addr_t size;
- int rv, inum;
-
- sc->sc_dev = self;
- sc->sc_ver = TPM_2_0;
+ int rv;
rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", &res,
&acpi_resource_parse_ops_default);
if (ACPI_FAILURE(rv)) {
- aprint_error_dev(sc->sc_dev, "cannot parse resources %d\n", rv);
+ aprint_error_dev(self, "cannot parse resources %d\n", rv);
return;
}
mem = acpi_res_mem(&res, 0);
if (mem == NULL) {
- aprint_error_dev(sc->sc_dev, "cannot find mem\n");
+ aprint_error_dev(self, "cannot find mem\n");
goto out;
}
if (mem->ar_length != TPM_SPACE_SIZE) {
- aprint_error_dev(sc->sc_dev,
- "wrong size mem %"PRIu64" != %u\n",
+ aprint_error_dev(self, "wrong size mem %"PRIu64" != %u\n",
(uint64_t)mem->ar_length, TPM_SPACE_SIZE);
goto out;
}
- base = mem->ar_base;
- size = mem->ar_length;
- sc->sc_bt = aa->aa_memt;
+ sc->sc_dev = self;
+ sc->sc_ver = TPM_2_0;
+ mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
+ sc->sc_busy = false;
sc->sc_init = tpm_tis12_init;
sc->sc_start = tpm_tis12_start;
sc->sc_read = tpm_tis12_read;
sc->sc_write = tpm_tis12_write;
sc->sc_end = tpm_tis12_end;
+ sc->sc_bt = aa->aa_memt;
+
+ base = mem->ar_base;
+ size = mem->ar_length;
if (bus_space_map(sc->sc_bt, base, size, 0, &sc->sc_bh)) {
aprint_error_dev(sc->sc_dev, "cannot map registers\n");
@@ -146,24 +143,11 @@
goto out1;
}
- irq = acpi_res_irq(&res, 0);
- if (irq == NULL)
- inum = -1;
- else
- inum = irq->ar_irq;
-
- if ((rv = (*sc->sc_init)(sc, inum)) != 0) {
+ if ((*sc->sc_init)(sc) != 0) {
aprint_error_dev(sc->sc_dev, "cannot init device %d\n", rv);
goto out1;
}
- if (inum != -1 &&
- (sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq,
- IST_EDGE, IPL_TTY, tpm_intr, sc)) == NULL) {
- aprint_error_dev(sc->sc_dev, "cannot establish interrupt\n");
- goto out1;
- }
-
acpi_resource_cleanup(&res);
return;
diff -r e9855db22ae1 -r 72f091c30f2c sys/dev/ic/tpm.c
--- a/sys/dev/ic/tpm.c Tue Oct 08 18:02:46 2019 +0000
+++ b/sys/dev/ic/tpm.c Tue Oct 08 18:43:02 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tpm.c,v 1.13 2019/06/22 12:57:41 maxv Exp $ */
+/* $NetBSD: tpm.c,v 1.14 2019/10/08 18:43:02 maxv Exp $ */
/*
* Copyright (c) 2019 The NetBSD Foundation, Inc.
@@ -48,7 +48,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tpm.c,v 1.13 2019/06/22 12:57:41 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tpm.c,v 1.14 2019/10/08 18:43:02 maxv Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -67,6 +67,7 @@
#define TPM_BUFSIZ 1024
#define TPM_HDRSIZE 10
+
#define TPM_PARAM_SIZE 0x0001 /* that's a flag */
/* Timeouts. */
@@ -79,23 +80,6 @@
(TPM_INTF_DATA_AVAIL_INT|TPM_INTF_LOCALITY_CHANGE_INT| \
TPM_INTF_INT_LEVEL_LOW)
-static const struct {
- uint32_t devid;
- const char *name;
- int flags;
-#define TPM_DEV_NOINTS 0x0001
-} tpm_devs[] = {
- { 0x000615d1, "IFX SLD 9630 TT 1.1", 0 },
- { 0x000b15d1, "IFX SLB 9635 TT 1.2", 0 },
- { 0x100214e4, "Broadcom BCM0102", TPM_DEV_NOINTS },
- { 0x00fe1050, "WEC WPCT200", 0 },
- { 0x687119fa, "SNS SSX35", 0 },
- { 0x2e4d5453, "STM ST19WP18", 0 },
- { 0x32021114, "ATML 97SC3203", TPM_DEV_NOINTS },
- { 0x10408086, "INTEL INTC0102", 0 },
- { 0, "", TPM_DEV_NOINTS },
-};
-
static inline int
tpm_tmotohz(int tmo)
{
@@ -129,7 +113,7 @@
while ((r = bus_space_read_1(sc->sc_bt, sc->sc_bh, TPM_ACCESS) &
(TPM_ACCESS_VALID | TPM_ACCESS_ACTIVE_LOCALITY)) !=
(TPM_ACCESS_VALID | TPM_ACCESS_ACTIVE_LOCALITY) && to--) {
- rv = tsleep(sc->sc_init, PRIBIO | PCATCH, "tpm_locality", 1);
+ rv = tsleep(sc->sc_init, PCATCH, "tpm_locality", 1);
if (rv && rv != EWOULDBLOCK) {
return rv;
}
@@ -161,7 +145,7 @@
if (burst)
return burst;
- rv = tsleep(sc, PRIBIO | PCATCH, "tpm_getburst", 1);
+ rv = tsleep(sc, PCATCH, "tpm_getburst", 1);
if (rv && rv != EWOULDBLOCK) {
return 0;
}
@@ -189,9 +173,9 @@
{
struct tpm_softc *sc = device_private(dev);
static const uint8_t command[] = {
- 0, 193, /* TPM_TAG_RQU_COMMAND */
+ 0, 0xC1, /* TPM_TAG_RQU_COMMAND */
0, 0, 0, 10, /* Length in bytes */
- 0, 0, 0, 156 /* TPM_ORD_SaveStates */
+ 0, 0, 0, 0x98 /* TPM_ORD_SaveState */
};
uint8_t scratch[sizeof(command)];
@@ -209,16 +193,13 @@
/* -------------------------------------------------------------------------- */
-/*
- * Wait for given status bits using polling.
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