starlingx/integ
Code Issues Proposed changes

Relocate tpmdd to stx-integ/kernel/kernel-modules/tpmdd

Browse Source 
Move content from stx-gplv2 into stx-integ

Packages will be relocated to

stx-integ:
    base/
        bash
        cgcs-users
        cluster-resource-agents
        dpkg
        haproxy
        libfdt
        netpbm
        rpm

    database/
        mariadb

    filesystem/
        iscsi-initiator-utils

    filesystem/drbd/
        drbd-tools

    kernel/kernel-modules/
        drbd
        integrity
        intel-e1000e
        intel-i40e
        intel-i40evf
        intel-ixgbe
        intel-ixgbevf
        qat17
        tpmdd

    ldap/
        ldapscripts

    networking/
        iptables
        net-tools

Change-Id: I0a9070e35559e5545b14e1fdd933a2ca2e969fd1
Story: 2002801
Task: 22687
Signed-off-by: Scott Little <scott.little@windriver.com>
This commit is contained in:
Scott Little 2018-08-01 14:18:33 -04:00
parent 69ff28268a
commit 9e954e3680
16 changed files with 1802 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
centos_pkg_dirs
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@ -122,3 +122,4 @@ kernel/kernel-modules/intel-i40e
kernel/kernel-modules/intel-ixgbevf
kernel/kernel-modules/intel-ixgbe
kernel/kernel-modules/qat17
kernel/kernel-modules/tpmdd

1
centos_pkg_dirs_rt
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@ -8,3 +8,4 @@ kernel/kernel-modules/intel-i40e
kernel/kernel-modules/intel-ixgbevf
kernel/kernel-modules/intel-ixgbe
kernel/kernel-modules/qat17
kernel/kernel-modules/tpmdd

13
kernel/kernel-modules/tpmdd/PKG-INFO Normal file
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@ -0,0 +1,13 @@
Metadata-Version: 1.1
Name: tpm-kmod
Version: 4.12
Summary: TPM Linux* Base Driver and Kernel Module
Home-page: http://tpmdd.sourceforge.net/
Author:
Author-email:
License: GPL
Description:
This package contains the Linux driver and modules for the TPM 1.2 and 2.0
Family of devices.
Platform: UNKNOWN

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kernel/kernel-modules/tpmdd/centos/build_srpm.data Normal file
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@ -0,0 +1,5 @@
COPY_LIST=" \
$FILES_BASE/* \
$CGCS_BASE/mwa-gplv2/tpmdd/patches/* \
$CGCS_BASE/downloads/tpm-kmod-668a8270.tar.gz"
TIS_PATCH_VER=5

344
kernel/kernel-modules/tpmdd/centos/files/COPYING Normal file
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@ -0,0 +1,344 @@
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184
kernel/kernel-modules/tpmdd/centos/files/README Normal file
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@ -0,0 +1,184 @@
TPM Device Driver for CentOS 7 (Linux version 3.10)
===============================================================================
===============================================================================
Kam Nasim <kam.nasim@windriver.com>
Copyright (c) 2017 Wind River Systems, Inc.
SPDX-License-Identifier: Apache-2.0
April, 2017
===============================================================================
Contents
--------
- Overview
- Rebasing Guidelines
- Changesets
================================================================================
Important Notes
---------------
Out-of-tree tpmdd now supported for RT Kernel
----------------------------------------------
The RT Kernel also uses the TPM kernel module. The out of kernel
tpmdd (kmod-tpm) package is installed on the RT kernel
Supports both TPM 1.2 and TPM 2.0 TCG Specifications
-------------------------------------------------------------
The entire TPM device driver set is now built out of tree, and supports both
TPM v1.2 and v2.0 TCG version of the device
IMA support disabled in Kernel
------------------------------------------------
TPM based Integrity Measurement Architecture (IMA) has been disabled in the Kernel,
since it requires the TPM driver to be built-in to the kernel so that it is available
during bootup to set up the PCR banks. Since the in-kernel TPM driver will trump our
out-of-tree TPM kernel modules, IMA support has been disabled and would require some
refactoring if it is to be used with this driver pack.
No support for legacy STMicroelectronics ST33ZP24 TPM drivers
--------------------------------------------------------------
Owing to a large number of dependency issues in the v3.10 Kernel, this driver
pack excludes the STM (ST33ZP24) drivers. These are legacy drivers for the
TPM 1.2 specification only, and would not apply to TPM 2.0 devices.
Overview
--------
This driver pack build TPM kernel modules for the 3.10 kernel version.
If newer kernel version are to be supported in the future then the COMPAT
layer (kcompat.h) will need to be adjusted to address kernel-driver compatibility
issues.
It supports Linux supported x86_64 systems.
These drivers are only supported as a loadable module at this time.
Rebasing Guidelines
--------------------
On rebasing TiC software heed the following:
- always rebase the Kernel first before rebasing this package
- get the HEAD from the tpmdd repo and generate a tarball, the tarball
should follow the naming convention: tpm-kmod-<gitHEAD>; use the short-hand
form of the git commit ID (8 characters)
- update the tpm-kmod spec to Source the new tarball
- apply all existing patches against the new tarball, and adjust the kcompat
layer (kcompat.h and common.mk) accordingly
================================================================================
Change Sets
-------------------------
This driver is a fork from the tpmdd repo:
https://sourceforge.net/projects/tpmdd/
http://git.infradead.org/users/jjs/linux-tpmdd.git/
Sync Head: 668a827057187403999b7ecfcf86b59979c8c3b2
COMPAT NOTES:
1. In newer kernels, IDR has been re-implemented using Radix trees:
commit 0a835c4f090af2c76fc2932c539c3b32fd21fbbb
Author: Matthew Wilcox <mawilcox@microsoft.com>
Date: Tue Dec 20 10:27:56 2016 -0500
Reimplement IDR and IDA using the radix tree
The IDR is very similar to the radix tree. It has some functionality that
the radix tree did not have (alloc next free, cyclic allocation, a
callback-based for_each, destroy tree), which is readily implementable on
top of the radix tree. A few small changes were needed in order to use a
tag to represent nodes with free space below them. More extensive
changes were needed to support storing NULL as a valid entry in an IDR.
Plain radix trees still interpret NULL as a not-present entry.
The IDA is reimplemented as a client of the newly enhanced radix tree. As
in the current implementation, it uses a bitmap at the last level of the
tree.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The compat layer therefore needs to redefine the idr_destroy() to
use the original idr.h based defination and not the one found in radix-trees.h
2. In newer kernels, a wrapper has been developed around inode mutex un/lock
commit 5955102c9984fa081b2d570cfac75c97eecf8f3b
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri Jan 22 15:40:57 2016 -0500
wrappers for ->i_mutex access
parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested},
inode_foo(inode) being mutex_foo(&inode->i_mutex).
Please, use those for access to ->i_mutex; over the coming cycle
->i_mutex will become rwsem, with ->lookup() done with it held
only shared.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The compat layer needs to replace all instances of inode locking
with the underlying mutex locking/unlocking calls
3. In newer kernels, ACPI memory map cleanup routines have changed
commit a238317ce8185519ed083e81e84260907fbbcf7f
Author: Lv Zheng <lv.zheng@intel.com>
Date: Tue May 20 15:39:41 2014 +0800
ACPI: Clean up acpi_os_map/unmap_memory() to eliminate __iomem.
ACPICA doesn't include protections around address space checking, Linux
build tests always complain increased sparse warnings around ACPICA
internal acpi_os_map/unmap_memory() invocations. This patch tries to fix
this issue permanently.
The compat layer needs to replace all instances of ACPI iomem map/unmapping with
the legacy os memory mapping/unmapping calls
4. In newer kernels, Infineon PNP module loading/unloading ops have changed
commit 1551660369d00a7e8cdfa12e9af132053eb67140
Author: Peter Huewe <PeterHuewe@gmx.de>
Date: Mon Mar 16 21:46:31 2015 +0100
PNP: tpm/tpm_infineon: Use module_pnp_driver to register driver
Removing some boilerplate by using module_pnp_driver instead of calling
register and unregister in the otherwise empty init/exit functions
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The compat layer needs to continue loading the PNP module the old way
using explicit init() and exit() functions

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kernel/kernel-modules/tpmdd/centos/files/modules-load.conf Normal file
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tpm
tpm_tis_core
tpm_tis

145
kernel/kernel-modules/tpmdd/centos/tpm-kmod.spec Normal file
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%if "%{?_tis_build_type}" == "rt"
%define bt_ext -rt
%else
%undefine bt_ext
%endif
# Define the kmod package name here.
%define kmod_name tpm
Name: %{kmod_name}-kmod%{?bt_ext}
# the version is the Kernel version from which
# this driver is extracted
Version: 4.12
Release: 0%{?_tis_dist}.%{tis_patch_ver}
Group: System Environment/Kernel
License: GPLv2
Summary: %{kmod_name}%{?bt_ext} kernel module(s)
BuildRequires: kernel%{?bt_ext}-devel, redhat-rpm-config, perl, openssl
ExclusiveArch: x86_64
# Sources.
# the tpmdd is available as a tarball, with
# the git commit Id referenced in the name
Source0: %{kmod_name}-kmod-668a8270.tar.gz
Source1: modules-load.conf
Source2: COPYING
Source3: README
# Patches
Patch01: 0001-disable-arm64-acpi-command.patch
Patch02: 0002-tpmdd-kcompat-support.patch
Patch03: UPSTREAM-0001-tpm-replace-msleep-with-usleep_range.patch
Patch04: UPSTREAM-0002-tpm-reduce-tpm-polling-delay-in-tpm_tis_core.patch
Patch05: UPSTREAM-0003-tpm-use-tpm_msleep-value-as-max-delay.patch
Patch06: UPSTREAM-0004-tpm-wait-for-stat-to-specify-variable-polling-time.patch
Patch07: UPSTREAM-0005-tpm-ignore-burstcount-to-improve-send-performance.patch
%define kversion %(rpm -q kernel%{?bt_ext}-devel | sort --version-sort | tail -1 | sed 's/kernel%{?bt_ext}-devel-//')
%package -n kmod-tpm%{?bt_ext}
Summary: TPM kernel module(s) and drivers
Group: System Environment/Kernel
%global _use_internal_dependency_generator 0
Provides: kernel-modules >= %{kversion}
Provides: tpm-kmod = %{?epoch:%{epoch}:}%{version}-%{release}
Requires(post): /usr/sbin/depmod
Requires(postun): /usr/sbin/depmod
%description -n kmod-tpm%{?bt_ext}
This package provides the %{version} TPM kernel module(s) and drivers built
for the Linux kernel using the %{_target_cpu} family of processors.
%package symbols
Summary: Contains the Module.symvers file for this module
Group: Development/System
%description symbols
This package provides the Module.symvers file which will be used
by other dependant Kernel modules, if they use Kernel symbols that
this module exports
%files symbols
%defattr(-,root,root)
%{_usrsrc}/debug/tpm/Module.symvers
%post -n kmod-tpm%{?bt_ext}
echo "Working. This may take some time ..."
if [ -e "/boot/System.map-%{kversion}" ]; then
/usr/sbin/depmod -aeF "/boot/System.map-%{kversion}" "%{kversion}" > /dev/null || :
fi
modules=( $(find /lib/modules/%{kversion}/kernel/drivers/char/tpm | grep '\.ko$') )
if [ -x "/sbin/weak-modules" ]; then
printf '%s\n' "${modules[@]}" | /sbin/weak-modules --add-modules
fi
echo "Done."
%preun -n kmod-tpm%{?bt_ext}
rpm -ql kmod-tpm%{?bt_ext}-%{version}-%{release}.x86_64 | grep '\.ko$' > /var/run/rpm-kmod-tpm%{?bt_ext}-modules
%postun -n kmod-tpm%{?bt_ext}
echo "Working. This may take some time ..."
if [ -e "/boot/System.map-%{kversion}" ]; then
/usr/sbin/depmod -aeF "/boot/System.map-%{kversion}" "%{kversion}" > /dev/null || :
fi
modules=( $(cat /var/run/rpm-kmod-tpm%{?bt_ext}-modules) )
rm /var/run/rpm-kmod-tpm%{?bt_ext}-modules
if [ -x "/sbin/weak-modules" ]; then
printf '%s\n' "${modules[@]}" | /sbin/weak-modules --remove-modules
fi
echo "Done."
%files -n kmod-tpm%{?bt_ext}
%defattr(644,root,root,755)
/lib/modules/%{kversion}/
%doc /usr/share/doc/kmod-tpm/
%{_sysconfdir}/modules-load.d/tpm_tis.conf
# Disable the building of the debug package(s).
%define debug_package %{nil}
%description
This package provides the %{kmod_name} kernel module(s).
It is built to depend upon the specific ABI provided by a range of releases
of the same variant of the Linux kernel and not on any one specific build.
%prep
%autosetup -p 1 -n %{kmod_name}
%build
# build out all the TPM kernel modules
%{__make} KSRC=%{_usrsrc}/kernels/%{kversion}
%install
%{__install} -d %{buildroot}/lib/modules/%{kversion}/kernel/drivers/char/%{kmod_name}/
%{__install} *.ko %{buildroot}/lib/modules/%{kversion}/kernel/drivers/char/%{kmod_name}/
# install the Module.symvers file
%{__install} -d %{buildroot}%{_usrsrc}/debug/%{kmod_name}/
%{__install} Module.symvers %{buildroot}%{_usrsrc}/debug/%{kmod_name}/
%{__install} -d %{buildroot}%{_sysconfdir}/modules-load.d
%{__install} -m 644 %{SOURCE1} %{buildroot}%{_sysconfdir}/modules-load.d/tpm_tis.conf
%{__install} -d %{buildroot}%{_defaultdocdir}/kmod-%{kmod_name}/
%{__install} %{SOURCE2} %{buildroot}%{_defaultdocdir}/kmod-%{kmod_name}/
%{__install} %{SOURCE3} %{buildroot}%{_defaultdocdir}/kmod-%{kmod_name}/
# Strip the modules(s).
find %{buildroot} -type f -name \*.ko -exec %{__strip} --strip-debug \{\} \;
# Always Sign the modules(s).
# If the module signing keys are not defined, define them here.
%{!?privkey: %define privkey /usr/src/kernels/%{kversion}/signing_key.priv}
%{!?pubkey: %define pubkey /usr/src/kernels/%{kversion}/signing_key.x509}
for module in $(find %{buildroot} -type f -name \*.ko);
do %{__perl} /usr/src/kernels/%{kversion}/scripts/sign-file \
sha256 %{privkey} %{pubkey} $module;
done
%clean
%{__rm} -rf %{buildroot}
%changelog
* Wed Apr 19 2017 Kam Nasim <kam.nasim@windriver.com> 4.12
- Initial RPM package.

40
kernel/kernel-modules/tpmdd/patches/0001-disable-arm64-acpi-command.patch Normal file
View File

@ -0,0 +1,40 @@
From: Kam Nasim <kam.nasim@windriver.com>
Date: Tue, 26 Apr 2017 12:23:03 -0400
Subject: [PATCH] ARM64 based ACPI commands should not be compiled
---
tpm_crb.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/tpm_crb.c
+++ b/tpm_crb.c
@@ -531,7 +531,6 @@ static int crb_acpi_add(struct acpi_devi
struct crb_priv *priv;
struct tpm_chip *chip;
struct device *dev = &device->dev;
- struct tpm2_crb_smc *crb_smc;
acpi_status status;
u32 sm;
int rc;
@@ -564,6 +563,7 @@ static int crb_acpi_add(struct acpi_devi
sm == ACPI_TPM2_COMMAND_BUFFER_WITH_START_METHOD)
priv->flags |= CRB_FL_ACPI_START;
+#ifdef CONFIG_ARM64
if (sm == ACPI_TPM2_COMMAND_BUFFER_WITH_SMC) {
if (buf->header.length < (sizeof(*buf) + sizeof(*crb_smc))) {
dev_err(dev,
@@ -572,11 +572,12 @@ static int crb_acpi_add(struct acpi_devi
ACPI_TPM2_COMMAND_BUFFER_WITH_SMC);
return -EINVAL;
}
- crb_smc = ACPI_ADD_PTR(struct tpm2_crb_smc, buf,
+ struct tpm2_crb_smc *crb_smc = ACPI_ADD_PTR(struct tpm2_crb_smc, buf,
ACPI_TPM2_START_METHOD_PARAMETER_OFFSET);
priv->smc_func_id = crb_smc->smc_func_id;
priv->flags |= CRB_FL_CRB_SMC_START;
}
+#endif
rc = crb_map_io(device, priv, buf);
if (rc)

543
kernel/kernel-modules/tpmdd/patches/0002-tpmdd-kcompat-support.patch Normal file
View File

@ -0,0 +1,543 @@
From 70386017de51483cfc9c0fc3e809d6f9867c4c5f Mon Sep 17 00:00:00 2001
Message-Id: <70386017de51483cfc9c0fc3e809d6f9867c4c5f.1507751678.git.Jim.Somerville@windriver.com>
From: Kam Nasim <kam.nasim@windriver.com>
Date: Wed, 26 Apr 2017 12:23:03 -0400
Subject: [PATCH 1/1] compat changes for building tpmdd out-of-tree
Signed-off-by: Jim Somerville <Jim.Somerville@windriver.com>
---
Makefile | 110 ++++++++++++++++++++-
common.mk | 332 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
kcompat.h | 39 ++++++++
tpm.h | 3 +
4 files changed, 482 insertions(+), 2 deletions(-)
create mode 100644 common.mk
create mode 100644 kcompat.h
diff --git a/Makefile b/Makefile
index 23681f0..f3250cc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,9 @@
-#
+
+ifneq ($(KERNELRELEASE),)
+# kbuild part of makefile
# Makefile for the kernel tpm device drivers.
#
+
obj-$(CONFIG_TCG_TPM) += tpm.o
tpm-y := tpm-interface.o tpm-dev.o tpm-sysfs.o tpm-chip.o tpm2-cmd.o \
tpm-dev-common.o tpmrm-dev.o tpm1_eventlog.o tpm2_eventlog.o \
@@ -17,7 +20,110 @@ obj-$(CONFIG_TCG_NSC) += tpm_nsc.o
obj-$(CONFIG_TCG_ATMEL) += tpm_atmel.o
obj-$(CONFIG_TCG_INFINEON) += tpm_infineon.o
obj-$(CONFIG_TCG_IBMVTPM) += tpm_ibmvtpm.o
-obj-$(CONFIG_TCG_TIS_ST33ZP24) += st33zp24/
obj-$(CONFIG_TCG_XEN) += xen-tpmfront.o
obj-$(CONFIG_TCG_CRB) += tpm_crb.o
obj-$(CONFIG_TCG_VTPM_PROXY) += tpm_vtpm_proxy.o
+
+else # ifneq($(KERNELRELEASE),)
+# normal makefile
+
+# driver will be provided by the spec file
+DRIVER=
+
+ifeq (,$(wildcard common.mk))
+ $(error Cannot find common.mk build rules)
+else
+ include common.mk
+endif
+
+###############
+# Build rules #
+###############
+
+# Standard compilation, with regular output
+default:
+ @+$(call kernelbuild,modules)
+
+# Noisy output, for extra debugging
+noisy:
+ @+$(call kernelbuild,modules,V=1)
+
+# Silence any output generated
+silent:
+ @+$(call kernelbuild,modules,>/dev/null)
+
+# Enable higher warning level
+checkwarnings: clean
+ @+$(call kernelbuild,modules,W=1)
+
+# Run sparse static analyzer
+sparse: clean
+ @+$(call kernelbuild,modules,C=2 CF="-D__CHECK_ENDIAN__ -Wbitwise -Wcontext")
+
+# Run coccicheck static analyzer
+ccc: clean
+ @+$(call kernelbuild,modules,coccicheck MODE=report)
+
+# Clean the module subdirectories
+clean:
+ @+$(call kernelbuild,clean)
+ @-rm -rf *.ko
+
+# Install the modules
+install: default
+ @echo "Installing modules..."
+ @+$(call kernelbuild,modules_install)
+ @echo "Running depmod..."
+ @$(call cmd_depmod)
+ifeq (${cmd_initrd},)
+ @echo "Unable to update initrd. You may need to do this manually."
+else
+ @echo "Updating initrd..."
+ -@$(call cmd_initrd)
+endif
+
+# Target used by rpmbuild spec file
+rpm: default
+ @install -D -m 644 ${DRIVER}.ko ${INSTALL_MOD_PATH}/lib/modules/${KVER}/${INSTALL_MOD_DIR}/${DRIVER}.ko
+
+uninstall:
+ rm -f ${INSTALL_MOD_PATH}/lib/modules/${KVER}/${INSTALL_MOD_DIR}/${DRIVER}.ko;
+ $(call cmd_depmod)
+ifeq (${cmd_initrd},)
+ @echo "Unable to update initrd. You may need to do this manually."
+else
+ @echo "Updating initrd..."
+ -@$(call cmd_initrd)
+endif
+
+########
+# Help #
+########
+help:
+ @echo 'Cleaning targets:'
+ @echo ' clean - Clean files generated by kernel module build'
+ @echo 'Build targets:'
+ @echo ' default - Build module(s) with standard verbosity'
+ @echo ' noisy - Build module(s) with V=1 verbosity -- very noisy'
+ @echo ' silent - Build module(s), squelching all output'
+ @echo 'Static Analysis:'
+ @echo ' checkwarnings - Clean, then build module(s) with W=1 warnings enabled'
+ @echo ' sparse - Clean, then check module(s) using sparse'
+ @echo ' ccc - Clean, then check module(s) using coccicheck'
+ @echo 'Other targets:'
+ @echo ' install - Build then install the module(s)'
+ @echo ' uninstall - Uninstall the module(s)'
+ @echo ' help - Display this help message'
+ @echo 'Variables:'
+ @echo ' LINUX_VERSION - Debug tool to force kernel LINUX_VERSION_CODE. Use at your own risk.'
+ @echo ' W=N - Kernel variable for setting warning levels'
+ @echo ' V=N - Kernel variable for setting output verbosity'
+ @echo ' INSTALL_MOD_PATH - Add prefix for the module and manpage installation path'
+ @echo ' INSTALL_MOD_DIR - Use module directory other than updates/drivers/char/tpm/${DRIVER}'
+ @echo ' KSRC - Specifies the full path to the kernel tree to build against'
+ @echo ' Other variables may be available for tuning make process, see'
+ @echo ' Kernel Kbuild documentation for more information'
+
+.PHONY: default noisy clean silent sparse ccc install uninstall help
+
+endif # ifneq($(KERNELRELEASE),)
diff --git a/common.mk b/common.mk
new file mode 100644
index 0000000..671ca33
--- /dev/null
+++ b/common.mk
@@ -0,0 +1,332 @@
+################################################################################
+#
+# Linux TPM Driver
+# Copyright(c) 2013 - 2017 Intel Corporation.
+# Copyright (c) 2017 Wind River Systems, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms and conditions of the GNU General Public License,
+# version 2, as published by the Free Software Foundation.
+#
+# This program is distributed in the hope it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+# more details.
+#
+# The full GNU General Public License is included in this distribution in
+# the file called "COPYING".
+#
+# Contact Information:
+# e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
+# Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+################################################################################
+
+
+# common Makefile rules useful for out-of-tree Linux driver builds
+#
+# Usage: include common.mk
+#
+# After including, you probably want to add a minimum_kver_check call
+#
+# Required Variables:
+# DRIVER
+# -- Set to the lowercase driver name
+
+#####################
+# Helpful functions #
+#####################
+
+readlink = $(shell readlink -f ${1})
+
+# helper functions for converting kernel version to version codes
+get_kver = $(or $(word ${2},$(subst ., ,${1})),0)
+get_kvercode = $(shell [ "${1}" -ge 0 -a "${1}" -le 255 2>/dev/null ] && \
+ [ "${2}" -ge 0 -a "${2}" -le 255 2>/dev/null ] && \
+ [ "${3}" -ge 0 -a "${3}" -le 255 2>/dev/null ] && \
+ printf %d $$(( ( ${1} << 16 ) + ( ${2} << 8 ) + ( ${3} ) )) )
+
+################
+# depmod Macro #
+################
+
+cmd_depmod = /sbin/depmod $(if ${SYSTEM_MAP_FILE},-e -F ${SYSTEM_MAP_FILE}) \
+ $(if $(strip ${INSTALL_MOD_PATH}),-b ${INSTALL_MOD_PATH}) \
+ -a ${KVER}
+
+################
+# dracut Macro #
+################
+
+cmd_initrd := $(shell \
+ if which dracut > /dev/null 2>&1 ; then \
+ echo "dracut --force"; \
+ elif which update-initramfs > /dev/null 2>&1 ; then \
+ echo "update-initramfs -u"; \
+ fi )
+
+#####################
+# Environment tests #
+#####################
+
+DRIVER_UPPERCASE := $(shell echo ${DRIVER} | tr "[:lower:]" "[:upper:]" | tr "TPM" "TCG")
+
+ifeq (,${BUILD_KERNEL})
+BUILD_KERNEL=$(shell uname -r)
+endif
+
+# Kernel Search Path
+# All the places we look for kernel source
+KSP := /lib/modules/${BUILD_KERNEL}/source \
+ /lib/modules/${BUILD_KERNEL}/build \
+ /usr/src/linux-${BUILD_KERNEL} \
+ /usr/src/linux-$(${BUILD_KERNEL} | sed 's/-.*//') \
+ /usr/src/kernel-headers-${BUILD_KERNEL} \
+ /usr/src/kernel-source-${BUILD_KERNEL} \
+ /usr/src/linux-$(${BUILD_KERNEL} | sed 's/\([0-9]*\.[0-9]*\)\..*/\1/') \
+ /usr/src/linux \
+ /usr/src/kernels/${BUILD_KERNEL} \
+ /usr/src/kernels
+
+# prune the list down to only values that exist and have an include/linux
+# sub-directory. We can't use include/config because some older kernels don't
+# have this.
+test_dir = $(shell [ -e ${dir}/include/linux ] && echo ${dir})
+KSP := $(foreach dir, ${KSP}, ${test_dir})
+
+# we will use this first valid entry in the search path
+ifeq (,${KSRC})
+ KSRC := $(firstword ${KSP})
+endif
+
+ifeq (,${KSRC})
+ $(warning *** Kernel header files not in any of the expected locations.)
+ $(warning *** Install the appropriate kernel development package, e.g.)
+ $(error kernel-devel, for building kernel modules and try again)
+else
+ifeq (/lib/modules/${BUILD_KERNEL}/source, ${KSRC})
+ KOBJ := /lib/modules/${BUILD_KERNEL}/build
+else
+ KOBJ := ${KSRC}
+endif
+endif
+
+# Version file Search Path
+VSP := ${KOBJ}/include/generated/utsrelease.h \
+ ${KOBJ}/include/linux/utsrelease.h \
+ ${KOBJ}/include/linux/version.h \
+ ${KOBJ}/include/generated/uapi/linux/version.h \
+ /boot/vmlinuz.version.h
+
+# Config file Search Path
+CSP := ${KOBJ}/include/generated/autoconf.h \
+ ${KOBJ}/include/linux/autoconf.h \
+ /boot/vmlinuz.autoconf.h
+
+# System.map Search Path (for depmod)
+MSP := ${KSRC}/System.map \
+ /boot/System.map-${BUILD_KERNEL}
+
+# prune the lists down to only files that exist
+test_file = $(shell [ -f ${file} ] && echo ${file})
+VSP := $(foreach file, ${VSP}, ${test_file})
+CSP := $(foreach file, ${CSP}, ${test_file})
+MSP := $(foreach file, ${MSP}, ${test_file})
+
+
+# and use the first valid entry in the Search Paths
+ifeq (,${VERSION_FILE})
+ VERSION_FILE := $(firstword ${VSP})
+endif
+
+ifeq (,${CONFIG_FILE})
+ CONFIG_FILE := $(firstword ${CSP})
+endif
+
+ifeq (,${SYSTEM_MAP_FILE})
+ SYSTEM_MAP_FILE := $(firstword ${MSP})
+endif
+
+ifeq (,$(wildcard ${VERSION_FILE}))
+ $(error Linux kernel source not configured - missing version header file)
+endif
+
+ifeq (,$(wildcard ${CONFIG_FILE}))
+ $(error Linux kernel source not configured - missing autoconf.h)
+endif
+
+ifeq (,$(wildcard ${SYSTEM_MAP_FILE}))
+ $(warning Missing System.map file - depmod will not check for missing symbols)
+endif
+
+#######################
+# Linux Version Setup #
+#######################
+
+# The following command line parameter is intended for development of KCOMPAT
+# against upstream kernels such as net-next which have broken or non-updated
+# version codes in their Makefile. They are intended for debugging and
+# development purpose only so that we can easily test new KCOMPAT early. If you
+# don't know what this means, you do not need to set this flag. There is no
+# arcane magic here.
+
+# Convert LINUX_VERSION into LINUX_VERSION_CODE
+ifneq (${LINUX_VERSION},)
+ LINUX_VERSION_CODE=$(call get_kvercode,$(call get_kver,${LINUX_VERSION},1),$(call get_kver,${LINUX_VERSION},2),$(call get_kver,${LINUX_VERSION},3))
+endif
+
+# Honor LINUX_VERSION_CODE
+ifneq (${LINUX_VERSION_CODE},)
+ $(warning Forcing target kernel to build with LINUX_VERSION_CODE of ${LINUX_VERSION_CODE}$(if ${LINUX_VERSION}, from LINUX_VERSION=${LINUX_VERSION}). Do this at your own risk.)
+ KVER_CODE := ${LINUX_VERSION_CODE}
+ EXTRA_CFLAGS += -DLINUX_VERSION_CODE=${LINUX_VERSION_CODE}
+endif
+
+# Determine SLE_LOCALVERSION_CODE for SuSE SLE >= 11 (needed by kcompat)
+# This assumes SuSE will continue setting CONFIG_LOCALVERSION to the string
+# appended to the stable kernel version on which their kernel is based with
+# additional versioning information (up to 3 numbers), a possible abbreviated
+# git SHA1 commit id and a kernel type, e.g. CONFIG_LOCALVERSION=-1.2.3-default
+# or CONFIG_LOCALVERSION=-999.gdeadbee-default
+ifeq (1,$(shell ${CC} -E -dM ${CONFIG_FILE} 2> /dev/null |\
+ grep -m 1 CONFIG_SUSE_KERNEL | awk '{ print $$3 }'))
+
+ifneq (10,$(shell ${CC} -E -dM ${CONFIG_FILE} 2> /dev/null |\
+ grep -m 1 CONFIG_SLE_VERSION | awk '{ print $$3 }'))
+
+ LOCALVERSION := $(shell ${CC} -E -dM ${CONFIG_FILE} 2> /dev/null |\
+ grep -m 1 CONFIG_LOCALVERSION | awk '{ print $$3 }' |\
+ cut -d'-' -f2 | sed 's/\.g[[:xdigit:]]\{7\}//')
+ LOCALVER_A := $(shell echo ${LOCALVERSION} | cut -d'.' -f1)
+ LOCALVER_B := $(shell echo ${LOCALVERSION} | cut -s -d'.' -f2)
+ LOCALVER_C := $(shell echo ${LOCALVERSION} | cut -s -d'.' -f3)
+ SLE_LOCALVERSION_CODE := $(shell expr ${LOCALVER_A} \* 65536 + \
+ 0${LOCALVER_B} \* 256 + 0${LOCALVER_C})
+ EXTRA_CFLAGS += -DSLE_LOCALVERSION_CODE=${SLE_LOCALVERSION_CODE}
+endif
+endif
+
+EXTRA_CFLAGS += ${CFLAGS_EXTRA}
+
+# get the kernel version - we use this to find the correct install path
+KVER := $(shell ${CC} ${EXTRA_CFLAGS} -E -dM ${VERSION_FILE} | grep UTS_RELEASE | \
+ awk '{ print $$3 }' | sed 's/\"//g')
+
+# assume source symlink is the same as build, otherwise adjust KOBJ
+ifneq (,$(wildcard /lib/modules/${KVER}/build))
+ ifneq (${KSRC},$(call readlink,/lib/modules/${KVER}/build))
+ KOBJ=/lib/modules/${KVER}/build
+ endif
+endif
+
+ifeq (${KVER_CODE},)
+ KVER_CODE := $(shell ${CC} ${EXTRA_CFLAGS} -E -dM ${VSP} 2> /dev/null |\
+ grep -m 1 LINUX_VERSION_CODE | awk '{ print $$3 }' | sed 's/\"//g')
+endif
+
+# minimum_kver_check
+#
+# helper function to provide uniform output for different drivers to abort the
+# build based on kernel version check. Usage: "$(call minimum_kver_check,2,6,XX)".
+define _minimum_kver_check
+ifeq (0,$(shell [ ${KVER_CODE} -lt $(call get_kvercode,${1},${2},${3}) ]; echo "$$?"))
+ $$(warning *** Aborting the build.)
+ $$(error This driver is not supported on kernel versions older than ${1}.${2}.${3})
+endif
+endef
+minimum_kver_check = $(eval $(call _minimum_kver_check,${1},${2},${3}))
+
+################
+# Manual Pages #
+################
+
+MANSECTION = 7
+
+ifeq (,${MANDIR})
+ # find the best place to install the man page
+ MANPATH := $(shell (manpath 2>/dev/null || echo $MANPATH) | sed 's/:/ /g')
+ ifneq (,${MANPATH})
+ # test based on inclusion in MANPATH
+ test_dir = $(findstring ${dir}, ${MANPATH})
+ else
+ # no MANPATH, test based on directory existence
+ test_dir = $(shell [ -e ${dir} ] && echo ${dir})
+ endif
+ # our preferred install path
+ # should /usr/local/man be in here ?
+ MANDIR := /usr/share/man /usr/man
+ MANDIR := $(foreach dir, ${MANDIR}, ${test_dir})
+ MANDIR := $(firstword ${MANDIR})
+endif
+ifeq (,${MANDIR})
+ # fallback to /usr/man
+ MANDIR := /usr/man
+endif
+
+####################
+# CCFLAGS variable #
+####################
+
+# set correct CCFLAGS variable for kernels older than 2.6.24
+ifeq (0,$(shell [ ${KVER_CODE} -lt $(call get_kvercode,2,6,24) ]; echo $$?))
+CCFLAGS_VAR := EXTRA_CFLAGS
+else
+CCFLAGS_VAR := ccflags-y
+endif
+
+#################
+# KBUILD_OUTPUT #
+#################
+
+# Only set KBUILD_OUTPUT if KOBJ differs from KSRC
+ifneq (${KSRC},${KOBJ})
+export KBUILD_OUTPUT ?= ${KOBJ}
+endif
+
+############################
+# Module Install Directory #
+############################
+
+# Default to using updates/drivers/char/tpm/ path, since depmod since
+# v3.1 defaults to checking updates folder first, and only checking kernels/
+# and extra afterwards. We use updates instead of kernel/* due to desire to
+# prevent over-writing built-in modules files.
+export INSTALL_MOD_DIR ?= updates/drivers/char/tpm/
+
+
+######################
+# Kernel Build Macro #
+######################
+
+# kernel build function
+# ${1} is the kernel build target
+# ${2} may contain any extra rules to pass directly to the sub-make process
+#
+# This function is expected to be executed by
+# @+$(call kernelbuild,<target>,<extra parameters>)
+# from within a Makefile recipe.
+#
+# The following variables are expected to be defined for its use:
+# GCC_I_SYS -- if set it will enable use of gcc-i-sys.sh wrapper to use -isystem
+# CCFLAGS_VAR -- the CCFLAGS variable to set extra CFLAGS
+# EXTRA_CFLAGS -- a set of extra CFLAGS to pass into the ccflags-y variable
+# KSRC -- the location of the kernel source tree to build against
+# DRIVER_UPPERCASE -- the uppercase name of the kernel module, set from DRIVER
+#
+kernelbuild = ${MAKE} $(if ${GCC_I_SYS},CC="${GCC_I_SYS}") \
+ ${CCFLAGS_VAR}="${EXTRA_CFLAGS}" \
+ -C "${KSRC}" \
+ CONFIG_TCG_TPM=m \
+ CONFIG_ACPI=y \
+ CONFIG_TCG_TIS_CORE=m \
+ CONFIG_TCG_TIS=m \
+ CONFIG_TCG_TIS_I2C_ATMEL=m \
+ CONFIG_TCG_TIS_I2C_INFINEON=m \
+ CONFIG_TCG_TIS_I2C_NUVOTON=m \
+ CONFIG_TCG_NSC=m \
+ CONFIG_TCG_ATMEL=m \
+ CONFIG_TCG_INFINEON=m \
+ CONFIG_TCG_CRB=m \
+ CONFIG_${DRIVER_UPPERCASE}=m \
+ modules \
+ M="${CURDIR}" \
+ ${2} ${1}
diff --git a/kcompat.h b/kcompat.h
new file mode 100644
index 0000000..cd9578a
--- /dev/null
+++ b/kcompat.h
@@ -0,0 +1,39 @@
+/**********************************************************************
+ *
+ * Copyright (c) 2017 Wind River Systems, Inc.
+* SPDX-License-Identifier: Apache-2.0
+*
+*
+*
+ **********************************************************************/
+
+#ifndef _KCOMPAT_H_
+#define _KCOMPAT_H_
+
+#ifndef LINUX_VERSION_CODE
+#include <linux/version.h>
+#else
+#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
+#endif
+#include <linux/moduleparam.h>
+#include <linux/pm_runtime.h>
+
+#if ( LINUX_VERSION_CODE <= KERNEL_VERSION(3,10,0) )
+#include <linux/idr.h>
+#include <linux/printk.h>
+
+// would normally be passed in from the Kernel, had
+// we set CONFIG_TCG_TPM=y in the KConfig, however
+// that has the added disadvantage of building the
+// TPM driver in-kernel.
+#define CONFIG_TCG_TPM_MODULE 1
+
+#define acpi_os_map_iomem(x, y) acpi_os_map_memory(x, y)
+#define acpi_os_unmap_iomem(x, y) acpi_os_unmap_memory(x, y)
+
+#define module_pnp_driver(__pnp_driver) \
+ module_driver(__pnp_driver, pnp_register_driver, \
+ pnp_unregister_driver)
+
+#endif
+#endif
diff --git a/tpm.h b/tpm.h
index 4b4c8de..b744e2f 100644
--- a/tpm.h
+++ b/tpm.h
@@ -23,6 +23,9 @@
#ifndef __TPM_H__
#define __TPM_H__
+// WRS: the kernel compat layer
+#include "kcompat.h"
+
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/fs.h>
--
1.8.3.1

200
kernel/kernel-modules/tpmdd/patches/UPSTREAM-0001-tpm-replace-msleep-with-usleep_range.patch Normal file
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@ -0,0 +1,200 @@
From 9f3fc7bcddcb51234e23494531f93ab60475e1c3 Mon Sep 17 00:00:00 2001
From: Hamza Attak <hamza@hpe.com>
Date: Mon, 14 Aug 2017 19:09:16 +0100
Subject: [PATCH] tpm: replace msleep() with usleep_range() in TPM 1.2/2.0
generic drivers
The patch simply replaces all msleep function calls with usleep_range calls
in the generic drivers.
Tested with an Infineon TPM 1.2, using the generic tpm-tis module, for a
thousand PCR extends, we see results going from 1m57s unpatched to 40s
with the new patch. We obtain similar results when using the original and
patched tpm_infineon driver, which is also part of the patch.
Similarly with a STM TPM 2.0, using the CRB driver, it takes about 20ms per
extend unpatched and around 7ms with the new patch.
Note that the PCR consistency is untouched with this patch, each TPM has
been tested with 10 million extends and the aggregated PCR value is
continuously verified to be correct.
As an extension of this work, this could potentially and easily be applied
to other vendor's drivers. Still, these changes are not included in the
proposed patch as they are untested.
Signed-off-by: Hamza Attak <hamza@hpe.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
---
tpm-interface.c | 10 +++++-----
tpm.h | 9 ++++++++-
tpm2-cmd.c | 2 +-
tpm_infineon.c | 6 +++---
tpm_tis_core.c | 8 ++++----
5 files changed, 21 insertions(+), 14 deletions(-)
diff --git a/tpm-interface.c b/tpm-interface.c
index fe597e6..1d6729b 100644
--- a/tpm-interface.c
+++ b/tpm-interface.c
@@ -455,7 +455,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,
goto out;
}
- msleep(TPM_TIMEOUT); /* CHECK */
+ tpm_msleep(TPM_TIMEOUT);
rmb();
} while (time_before(jiffies, stop));
@@ -970,7 +970,7 @@ int tpm_do_selftest(struct tpm_chip *chip)
dev_info(
&chip->dev, HW_ERR
"TPM command timed out during continue self test");
- msleep(delay_msec);
+ tpm_msleep(delay_msec);
continue;
}
@@ -985,7 +985,7 @@ int tpm_do_selftest(struct tpm_chip *chip)
}
if (rc != TPM_WARN_DOING_SELFTEST)
return rc;
- msleep(delay_msec);
+ tpm_msleep(delay_msec);
} while (--loops > 0);
return rc;
@@ -1085,7 +1085,7 @@ int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
}
} else {
do {
- msleep(TPM_TIMEOUT);
+ tpm_msleep(TPM_TIMEOUT);
status = chip->ops->status(chip);
if ((status & mask) == mask)
return 0;
@@ -1150,7 +1150,7 @@ int tpm_pm_suspend(struct device *dev)
*/
if (rc != TPM_WARN_RETRY)
break;
- msleep(TPM_TIMEOUT_RETRY);
+ tpm_msleep(TPM_TIMEOUT_RETRY);
}
if (rc)
diff --git a/tpm.h b/tpm.h
index 04fbff2..2d5466a 100644
--- a/tpm.h
+++ b/tpm.h
@@ -50,7 +50,8 @@ enum tpm_const {
enum tpm_timeout {
TPM_TIMEOUT = 5, /* msecs */
- TPM_TIMEOUT_RETRY = 100 /* msecs */
+ TPM_TIMEOUT_RETRY = 100, /* msecs */
+ TPM_TIMEOUT_RANGE_US = 300 /* usecs */
};
/* TPM addresses */
@@ -527,6 +528,12 @@ ssize_t tpm_getcap(struct tpm_chip *chip, u32 subcap_id, cap_t *cap,
int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
wait_queue_head_t *queue, bool check_cancel);
+static inline void tpm_msleep(unsigned int delay_msec)
+{
+ usleep_range(delay_msec * 1000,
+ (delay_msec * 1000) + TPM_TIMEOUT_RANGE_US);
+};
+
struct tpm_chip *tpm_chip_find_get(int chip_num);
__must_check int tpm_try_get_ops(struct tpm_chip *chip);
void tpm_put_ops(struct tpm_chip *chip);
diff --git a/tpm2-cmd.c b/tpm2-cmd.c
index f7f34b2a..e1a41b7 100644
--- a/tpm2-cmd.c
+++ b/tpm2-cmd.c
@@ -899,7 +899,7 @@ static int tpm2_do_selftest(struct tpm_chip *chip)
if (rc != TPM2_RC_TESTING)
break;
- msleep(delay_msec);
+ tpm_msleep(delay_msec);
}
return rc;
diff --git a/tpm_infineon.c b/tpm_infineon.c
index 3b1b9f9..d8f1004 100644
--- a/tpm_infineon.c
+++ b/tpm_infineon.c
@@ -191,7 +191,7 @@ static int wait(struct tpm_chip *chip, int wait_for_bit)
/* check the status-register if wait_for_bit is set */
if (status & 1 << wait_for_bit)
break;
- msleep(TPM_MSLEEP_TIME);
+ tpm_msleep(TPM_MSLEEP_TIME);
}
if (i == TPM_MAX_TRIES) { /* timeout occurs */
if (wait_for_bit == STAT_XFE)
@@ -226,7 +226,7 @@ static void tpm_wtx(struct tpm_chip *chip)
wait_and_send(chip, TPM_CTRL_WTX);
wait_and_send(chip, 0x00);
wait_and_send(chip, 0x00);
- msleep(TPM_WTX_MSLEEP_TIME);
+ tpm_msleep(TPM_WTX_MSLEEP_TIME);
}
static void tpm_wtx_abort(struct tpm_chip *chip)
@@ -237,7 +237,7 @@ static void tpm_wtx_abort(struct tpm_chip *chip)
wait_and_send(chip, 0x00);
wait_and_send(chip, 0x00);
number_of_wtx = 0;
- msleep(TPM_WTX_MSLEEP_TIME);
+ tpm_msleep(TPM_WTX_MSLEEP_TIME);
}
static int tpm_inf_recv(struct tpm_chip *chip, u8 * buf, size_t count)
diff --git a/tpm_tis_core.c b/tpm_tis_core.c
index b617b2e..63bc6c3 100644
--- a/tpm_tis_core.c
+++ b/tpm_tis_core.c
@@ -51,7 +51,7 @@ static int wait_startup(struct tpm_chip *chip, int l)
if (access & TPM_ACCESS_VALID)
return 0;
- msleep(TPM_TIMEOUT);
+ tpm_msleep(TPM_TIMEOUT);
} while (time_before(jiffies, stop));
return -1;
}
@@ -117,7 +117,7 @@ static int request_locality(struct tpm_chip *chip, int l)
do {
if (check_locality(chip, l))
return l;
- msleep(TPM_TIMEOUT);
+ tpm_msleep(TPM_TIMEOUT);
} while (time_before(jiffies, stop));
}
return -1;
@@ -164,7 +164,7 @@ static int get_burstcount(struct tpm_chip *chip)
burstcnt = (value >> 8) & 0xFFFF;
if (burstcnt)
return burstcnt;
- msleep(TPM_TIMEOUT);
+ tpm_msleep(TPM_TIMEOUT);
} while (time_before(jiffies, stop));
return -EBUSY;
}
@@ -396,7 +396,7 @@ static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len)
priv->irq = irq;
chip->flags |= TPM_CHIP_FLAG_IRQ;
if (!priv->irq_tested)
- msleep(1);
+ tpm_msleep(1);
if (!priv->irq_tested)
disable_interrupts(chip);
priv->irq_tested = true;
--
1.8.3.1

59
kernel/kernel-modules/tpmdd/patches/UPSTREAM-0002-tpm-reduce-tpm-polling-delay-in-tpm_tis_core.patch Normal file
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@ -0,0 +1,59 @@
From 19b460f3fe98b0513bf5a52f63e19bc120bd8093 Mon Sep 17 00:00:00 2001
From: Nayna Jain <nayna@linux.vnet.ibm.com>
Date: Fri, 10 Nov 2017 16:33:06 -0500
Subject: [PATCH] =?UTF-8?q?tpm:=20reduce=C2=A0tpm=C2=A0polling=C2=A0delay?=
=?UTF-8?q?=C2=A0in=C2=A0tpm=5Ftis=5Fcore?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The existing wait_for_tpm_stat() polls for the chip status after
5msec sleep. As per TCG ddwg input, it is expected that tpm might
return status in few usec. So, reducing the delay in polling to
1msec.
Similarly, get_burstcount() function sleeps for 5msec before
retrying for next query to burstcount in a loop. If it takes
lesser time for TPM to return, this 5msec delay is longer than
necessary.
After this change, performance on a TPM 1.2 with an 8 byte
burstcount for 1000 extends improved from ~14sec to ~9sec.
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
---
tpm-interface.c | 2 +-
tpm_tis_core.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tpm-interface.c b/tpm-interface.c
index 66d671b..9971422 100644
--- a/tpm-interface.c
+++ b/tpm-interface.c
@@ -1050,7 +1050,7 @@ again:
}
} else {
do {
- tpm_msleep(TPM_TIMEOUT);
+ tpm_msleep(1);
status = chip->ops->status(chip);
if ((status & mask) == mask)
return 0;
diff --git a/tpm_tis_core.c b/tpm_tis_core.c
index 63bc6c3..d87255f 100644
--- a/tpm_tis_core.c
+++ b/tpm_tis_core.c
@@ -164,7 +164,7 @@ static int get_burstcount(struct tpm_chip *chip)
burstcnt = (value >> 8) & 0xFFFF;
if (burstcnt)
return burstcnt;
- tpm_msleep(TPM_TIMEOUT);
+ tpm_msleep(1);
} while (time_before(jiffies, stop));
return -EBUSY;
}
--
1.8.3.1

37
kernel/kernel-modules/tpmdd/patches/UPSTREAM-0003-tpm-use-tpm_msleep-value-as-max-delay.patch Normal file
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@ -0,0 +1,37 @@
From 86d94390d9b97639fecb3e032120b93004a3036d Mon Sep 17 00:00:00 2001
From: Nayna Jain <nayna@linux.vnet.ibm.com>
Date: Fri, 10 Nov 2017 16:42:19 -0500
Subject: [PATCH] tpm: use tpm_msleep() value as max delay
Currently, tpm_msleep() uses delay_msec as the minimum value in
usleep_range. However, that is the maximum time we want to wait.
The function is modified to use the delay_msec as the maximum
value, not the minimum value.
After this change, performance on a TPM 1.2 with an 8 byte
burstcount for 1000 extends improved from ~9sec to ~8sec.
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
---
tpm.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tpm.h b/tpm.h
index d9c3659..6f3297e 100644
--- a/tpm.h
+++ b/tpm.h
@@ -550,8 +550,8 @@ int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
static inline void tpm_msleep(unsigned int delay_msec)
{
- usleep_range(delay_msec * 1000,
- (delay_msec * 1000) + TPM_TIMEOUT_RANGE_US);
+ usleep_range((delay_msec * 1000) - TPM_TIMEOUT_RANGE_US,
+ delay_msec * 1000);
};
struct tpm_chip *tpm_chip_find_get(int chip_num);
--
1.8.3.1

123
kernel/kernel-modules/tpmdd/patches/UPSTREAM-0004-tpm-wait-for-stat-to-specify-variable-polling-time.patch Normal file
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@ -0,0 +1,123 @@
From 2e23fe68b72638a1185f6243528f05f7dc665a3a Mon Sep 17 00:00:00 2001
From: Nayna Jain <nayna@linux.vnet.ibm.com>
Date: Tue, 14 Nov 2017 11:01:56 -0500
Subject: [PATCH] tpm: define __wait_for_tpm_stat to specify variable polling
sleep time
The existing wait_for_tpm_stat() checks the chip status before
sleeping for 5 msec in a polling loop. For some functions although
the status isn't ready immediately, the status returns extremely
quickly. Waiting for 5 msec causes an unnecessary delay. An
example is the send() call in the tpms_tis driver.
This patch defines __wait_for_tpm_stat(), allowing the caller
to specify the polling sleep timeout value within the loop.
The existing wait_for_tpm_stat() becomes a wrapper for this
function.
After this change, performance on a TPM 1.2 with an 8 byte
burstcount for 1000 extends improved from ~14sec to ~10sec.
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
---
tpm-interface.c | 15 ++++++++++++---
tpm.h | 3 +++
tpm_tis_core.c | 13 +++++++------
3 files changed, 22 insertions(+), 9 deletions(-)
diff --git a/tpm-interface.c b/tpm-interface.c
index 9971422..69041ec 100644
--- a/tpm-interface.c
+++ b/tpm-interface.c
@@ -1015,8 +1015,9 @@ static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask,
return false;
}
-int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
- wait_queue_head_t *queue, bool check_cancel)
+int __wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
+ unsigned int poll_sleep, wait_queue_head_t *queue,
+ bool check_cancel)
{
unsigned long stop;
long rc;
@@ -1050,7 +1051,7 @@ again:
}
} else {
do {
- tpm_msleep(1);
+ tpm_msleep(poll_sleep);
status = chip->ops->status(chip);
if ((status & mask) == mask)
return 0;
@@ -1058,6 +1059,14 @@ again:
}
return -ETIME;
}
+EXPORT_SYMBOL_GPL(__wait_for_tpm_stat);
+
+int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
+ wait_queue_head_t *queue, bool check_cancel)
+{
+ return __wait_for_tpm_stat(chip, mask, timeout, TPM_TIMEOUT,
+ queue, check_cancel);
+}
EXPORT_SYMBOL_GPL(wait_for_tpm_stat);
#define TPM_ORD_SAVESTATE cpu_to_be32(152)
diff --git a/tpm.h b/tpm.h
index 6f3297e..e2c9f06 100644
--- a/tpm.h
+++ b/tpm.h
@@ -545,6 +545,9 @@ int tpm_do_selftest(struct tpm_chip *chip);
unsigned long tpm_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
int tpm_pm_suspend(struct device *dev);
int tpm_pm_resume(struct device *dev);
+int __wait_for_tpm_stat(struct tpm_chip *chip, u8 mask,
+ unsigned long timeout, unsigned int poll_sleep,
+ wait_queue_head_t *queue, bool check_cancel);
int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask, unsigned long timeout,
wait_queue_head_t *queue, bool check_cancel);
diff --git a/tpm_tis_core.c b/tpm_tis_core.c
index d87255f..330b1a7 100644
--- a/tpm_tis_core.c
+++ b/tpm_tis_core.c
@@ -262,9 +262,9 @@ static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len)
status = tpm_tis_status(chip);
if ((status & TPM_STS_COMMAND_READY) == 0) {
tpm_tis_ready(chip);
- if (wait_for_tpm_stat
- (chip, TPM_STS_COMMAND_READY, chip->timeout_b,
- &priv->int_queue, false) < 0) {
+ if (__wait_for_tpm_stat
+ (chip, TPM_STS_COMMAND_READY, chip->timeout_b, 1,
+ &priv->int_queue, false) < 0) {
rc = -ETIME;
goto out_err;
}
@@ -285,7 +285,8 @@ static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len)
count += burstcnt;
- if (wait_for_tpm_stat(chip, TPM_STS_VALID, chip->timeout_c,
+ if (__wait_for_tpm_stat(chip, TPM_STS_VALID,
+ chip->timeout_c, 1,
&priv->int_queue, false) < 0) {
rc = -ETIME;
goto out_err;
@@ -302,8 +303,8 @@ static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len)
if (rc < 0)
goto out_err;
- if (wait_for_tpm_stat(chip, TPM_STS_VALID, chip->timeout_c,
- &priv->int_queue, false) < 0) {
+ if (__wait_for_tpm_stat(chip, TPM_STS_VALID, chip->timeout_c,
+ 1, &priv->int_queue, false) < 0) {
rc = -ETIME;
goto out_err;
}
--
1.8.3.1

97
kernel/kernel-modules/tpmdd/patches/UPSTREAM-0005-tpm-ignore-burstcount-to-improve-send-performance.patch Normal file
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@ -0,0 +1,97 @@
From e82060f0cf390ba8e4f79a54e68cef9a38088104 Mon Sep 17 00:00:00 2001
From: Nayna Jain <nayna@linux.vnet.ibm.com>
Date: Fri, 10 Nov 2017 17:16:35 -0500
Subject: [PATCH] tpm: ignore burstcount to improve tpm_tis send() performance
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The TPM burstcount status indicates the number of bytes that can
be sent to the TPM without causing bus wait states.  Effectively,
it is the number of empty bytes in the command FIFO.
This patch optimizes the tpm_tis_send_data() function by checking
the burstcount only once. And if the burstcount is valid, it writes
all the bytes at once, permitting wait state.
After this change, performance on a TPM 1.2 with an 8 byte
burstcount for 1000 extends improved from ~41sec to ~14sec.
Suggested-by: Ken Goldman <kgold@linux.vnet.ibm.com> in
conjunction with the TPM Device Driver work group.
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
---
tpm_tis_core.c | 42 +++++++++++++++---------------------------
1 file changed, 15 insertions(+), 27 deletions(-)
diff --git a/tpm_tis_core.c b/tpm_tis_core.c
index a338701..a6b4149 100644
--- a/tpm_tis_core.c
+++ b/tpm_tis_core.c
@@ -256,7 +256,6 @@ static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len)
{
struct tpm_tis_data *priv = dev_get_drvdata(&chip->dev);
int rc, status, burstcnt;
- size_t count = 0;
bool itpm = priv->flags & TPM_TIS_ITPM_WORKAROUND;
status = tpm_tis_status(chip);
@@ -270,36 +269,25 @@ static int tpm_tis_send_data(struct tpm_chip *chip, u8 *buf, size_t len)
}
}
- while (count < len - 1) {
- burstcnt = get_burstcount(chip);
- if (burstcnt < 0) {
- dev_err(&chip->dev, "Unable to read burstcount\n");
- rc = burstcnt;
- goto out_err;
- }
- burstcnt = min_t(int, burstcnt, len - count - 1);
- rc = tpm_tis_write_bytes(priv, TPM_DATA_FIFO(priv->locality),
- burstcnt, buf + count);
- if (rc < 0)
- goto out_err;
- count += burstcnt;
-
- if (__wait_for_tpm_stat(chip, TPM_STS_VALID,
- chip->timeout_c, 1,
- &priv->int_queue, false) < 0) {
- rc = -ETIME;
- goto out_err;
- }
- status = tpm_tis_status(chip);
- if (!itpm && (status & TPM_STS_DATA_EXPECT) == 0) {
- rc = -EIO;
- goto out_err;
- }
+ /*
+ * Get the initial burstcount to ensure TPM is ready to
+ * accept data, even when waiting for burstcount is disabled.
+ */
+ burstcnt = get_burstcount(chip);
+ if (burstcnt < 0) {
+ dev_err(&chip->dev, "Unable to read burstcount\n");
+ rc = burstcnt;
+ goto out_err;
}
+ rc = tpm_tis_write_bytes(priv, TPM_DATA_FIFO(priv->locality),
+ len -1, buf);
+ if (rc < 0)
+ goto out_err;
+
/* write last byte */
- rc = tpm_tis_write8(priv, TPM_DATA_FIFO(priv->locality), buf[count]);
+ rc = tpm_tis_write8(priv, TPM_DATA_FIFO(priv->locality), buf[len-1]);
if (rc < 0)
goto out_err;
--
1.8.3.1

7
kernel/kernel-modules/tpmdd/patches/tpm-kmod.spec.patchlist Normal file
View File

@ -0,0 +1,7 @@
0001-disable-arm64-acpi-command.patch
0002-tpmdd-kcompat-support.patch
UPSTREAM-0001-tpm-replace-msleep-with-usleep_range.patch
UPSTREAM-0002-tpm-reduce-tpm-polling-delay-in-tpm_tis_core.patch
UPSTREAM-0003-tpm-use-tpm_msleep-value-as-max-delay.patch
UPSTREAM-0004-tpm-wait-for-stat-to-specify-variable-polling-time.patch
UPSTREAM-0005-tpm-ignore-burstcount-to-improve-send-performance.patch