From patchwork Fri Sep 28 22:30:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Winkler, Tomas" X-Patchwork-Id: 10620411 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4E2BA15A6 for ; Fri, 28 Sep 2018 22:34:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3E054287A3 for ; Fri, 28 Sep 2018 22:34:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 31CD62A0EC; Fri, 28 Sep 2018 22:34:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 79A34287A3 for ; Fri, 28 Sep 2018 22:34:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727325AbeI2FAf (ORCPT ); Sat, 29 Sep 2018 01:00:35 -0400 Received: from mga09.intel.com ([134.134.136.24]:17973 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725938AbeI2FAe (ORCPT ); Sat, 29 Sep 2018 01:00:34 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Sep 2018 15:34:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,316,1534834800"; d="scan'208";a="267880100" Received: from twinkler-lnx.jer.intel.com ([10.12.91.48]) by fmsmga006.fm.intel.com with ESMTP; 28 Sep 2018 15:34:40 -0700 From: Tomas Winkler To: Jarkko Sakkinen , Jason Gunthorpe Cc: Nayna Jain , Alexander Usyskin , Tadeusz Struk , linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, Tomas Winkler Subject: [PATCH v5 01/21] tpm2: add new tpm2 commands according to TCG 1.36 Date: Sat, 29 Sep 2018 01:30:15 +0300 Message-Id: <20180928223035.14471-2-tomas.winkler@intel.com> X-Mailer: git-send-email 2.14.4 In-Reply-To: <20180928223035.14471-1-tomas.winkler@intel.com> References: <20180928223035.14471-1-tomas.winkler@intel.com> Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: X-Virus-Scanned: ClamAV using ClamSMTP 1. TPM2_CC_LAST has moved from 182 to 193 2. Convert tpm2_ordinal_duration from an array into a switch statement, as there are not so many commands that require special duration relative to a number of commands, the switch statement function is called tpm2_ordinal_duration_index(). 3. Fix kdoc comments for tpm2_calc_ordinal_duration(). Signed-off-by: Tomas Winkler Tested-by: Jarkko Sakkinen Reviewed-by: Jarkko Sakkinen --- V2-V3: Rebase. V4: 1. Fix kdoc 2. Rename tpm2_ordinal_duration() to tpm2_ordinal_duration_index() 3. Move the two functions close to each other in the file. V5: Adjust the kdoc to the new standard. drivers/char/tpm/tpm.h | 41 +++++--- drivers/char/tpm/tpm2-cmd.c | 241 +++++++++++++++++--------------------------- 2 files changed, 118 insertions(+), 164 deletions(-) diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index f20dc8ece348..0f08518b525d 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -134,22 +134,31 @@ enum tpm2_algorithms { }; enum tpm2_command_codes { - TPM2_CC_FIRST = 0x011F, - TPM2_CC_CREATE_PRIMARY = 0x0131, - TPM2_CC_SELF_TEST = 0x0143, - TPM2_CC_STARTUP = 0x0144, - TPM2_CC_SHUTDOWN = 0x0145, - TPM2_CC_CREATE = 0x0153, - TPM2_CC_LOAD = 0x0157, - TPM2_CC_UNSEAL = 0x015E, - TPM2_CC_CONTEXT_LOAD = 0x0161, - TPM2_CC_CONTEXT_SAVE = 0x0162, - TPM2_CC_FLUSH_CONTEXT = 0x0165, - TPM2_CC_GET_CAPABILITY = 0x017A, - TPM2_CC_GET_RANDOM = 0x017B, - TPM2_CC_PCR_READ = 0x017E, - TPM2_CC_PCR_EXTEND = 0x0182, - TPM2_CC_LAST = 0x018F, + TPM2_CC_FIRST = 0x011F, + TPM2_CC_HIERARCHY_CONTROL = 0x0121, + TPM2_CC_HIERARCHY_CHANGE_AUTH = 0x0129, + TPM2_CC_CREATE_PRIMARY = 0x0131, + TPM2_CC_SEQUENCE_COMPLETE = 0x013E, + TPM2_CC_SELF_TEST = 0x0143, + TPM2_CC_STARTUP = 0x0144, + TPM2_CC_SHUTDOWN = 0x0145, + TPM2_CC_NV_READ = 0x014E, + TPM2_CC_CREATE = 0x0153, + TPM2_CC_LOAD = 0x0157, + TPM2_CC_SEQUENCE_UPDATE = 0x015C, + TPM2_CC_UNSEAL = 0x015E, + TPM2_CC_CONTEXT_LOAD = 0x0161, + TPM2_CC_CONTEXT_SAVE = 0x0162, + TPM2_CC_FLUSH_CONTEXT = 0x0165, + TPM2_CC_VERIFY_SIGNATURE = 0x0177, + TPM2_CC_GET_CAPABILITY = 0x017A, + TPM2_CC_GET_RANDOM = 0x017B, + TPM2_CC_PCR_READ = 0x017E, + TPM2_CC_PCR_EXTEND = 0x0182, + TPM2_CC_EVENT_SEQUENCE_COMPLETE = 0x0185, + TPM2_CC_HASH_SEQUENCE_START = 0x0186, + TPM2_CC_CREATE_LOADED = 0x0191, + TPM2_CC_LAST = 0x0193, /* Spec 1.36 */ }; enum tpm2_permanent_handles { diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index 3acf4fd4e5a5..f08478c78bf7 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -40,129 +40,100 @@ static struct tpm2_hash tpm2_hash_map[] = { {HASH_ALGO_SM3_256, TPM2_ALG_SM3_256}, }; -/* - * Array with one entry per ordinal defining the maximum amount - * of time the chip could take to return the result. The values - * of the SHORT, MEDIUM, and LONG durations are taken from the - * PC Client Profile (PTP) specification. - * LONG_LONG is for commands that generates keys which empirically - * takes longer time on some systems. +/** + * tpm2_ordinal_duration_index() - returns an index to the chip duration table + * @ordinal: TPM command ordinal. + * + * The function returns an index to the chip duration table + * (enum tpm_duration), that describes the maximum amount of + * time the chip could take to return the result for a particular ordinal. + * + * The values of the MEDIUM, and LONG durations are taken + * from the PC Client Profile (PTP) specification (750, 2000 msec) + * + * LONG_LONG is for commands that generates keys which empirically takes + * a longer time on some systems. + * + * Return: + * * TPM_MEDIUM + * * TPM_LONG, + * * TPM_LONG_LONG + * * TPM_UNDEFINED. */ -static const u8 tpm2_ordinal_duration[TPM2_CC_LAST - TPM2_CC_FIRST + 1] = { - TPM_UNDEFINED, /* 11F */ - TPM_UNDEFINED, /* 120 */ - TPM_LONG, /* 121 */ - TPM_UNDEFINED, /* 122 */ - TPM_UNDEFINED, /* 123 */ - TPM_UNDEFINED, /* 124 */ - TPM_UNDEFINED, /* 125 */ - TPM_UNDEFINED, /* 126 */ - TPM_UNDEFINED, /* 127 */ - TPM_UNDEFINED, /* 128 */ - TPM_LONG, /* 129 */ - TPM_UNDEFINED, /* 12a */ - TPM_UNDEFINED, /* 12b */ - TPM_UNDEFINED, /* 12c */ - TPM_UNDEFINED, /* 12d */ - TPM_UNDEFINED, /* 12e */ - TPM_UNDEFINED, /* 12f */ - TPM_UNDEFINED, /* 130 */ - TPM_LONG_LONG, /* 131 */ - TPM_UNDEFINED, /* 132 */ - TPM_UNDEFINED, /* 133 */ - TPM_UNDEFINED, /* 134 */ - TPM_UNDEFINED, /* 135 */ - TPM_UNDEFINED, /* 136 */ - TPM_UNDEFINED, /* 137 */ - TPM_UNDEFINED, /* 138 */ - TPM_UNDEFINED, /* 139 */ - TPM_UNDEFINED, /* 13a */ - TPM_UNDEFINED, /* 13b */ - TPM_UNDEFINED, /* 13c */ - TPM_UNDEFINED, /* 13d */ - TPM_MEDIUM, /* 13e */ - TPM_UNDEFINED, /* 13f */ - TPM_UNDEFINED, /* 140 */ - TPM_UNDEFINED, /* 141 */ - TPM_UNDEFINED, /* 142 */ - TPM_LONG, /* 143 */ - TPM_MEDIUM, /* 144 */ - TPM_UNDEFINED, /* 145 */ - TPM_UNDEFINED, /* 146 */ - TPM_UNDEFINED, /* 147 */ - TPM_UNDEFINED, /* 148 */ - TPM_UNDEFINED, /* 149 */ - TPM_UNDEFINED, /* 14a */ - TPM_UNDEFINED, /* 14b */ - TPM_UNDEFINED, /* 14c */ - TPM_UNDEFINED, /* 14d */ - TPM_LONG, /* 14e */ - TPM_UNDEFINED, /* 14f */ - TPM_UNDEFINED, /* 150 */ - TPM_UNDEFINED, /* 151 */ - TPM_UNDEFINED, /* 152 */ - TPM_LONG_LONG, /* 153 */ - TPM_UNDEFINED, /* 154 */ - TPM_UNDEFINED, /* 155 */ - TPM_UNDEFINED, /* 156 */ - TPM_UNDEFINED, /* 157 */ - TPM_UNDEFINED, /* 158 */ - TPM_UNDEFINED, /* 159 */ - TPM_UNDEFINED, /* 15a */ - TPM_UNDEFINED, /* 15b */ - TPM_MEDIUM, /* 15c */ - TPM_UNDEFINED, /* 15d */ - TPM_UNDEFINED, /* 15e */ - TPM_UNDEFINED, /* 15f */ - TPM_UNDEFINED, /* 160 */ - TPM_UNDEFINED, /* 161 */ - TPM_UNDEFINED, /* 162 */ - TPM_UNDEFINED, /* 163 */ - TPM_UNDEFINED, /* 164 */ - TPM_UNDEFINED, /* 165 */ - TPM_UNDEFINED, /* 166 */ - TPM_UNDEFINED, /* 167 */ - TPM_UNDEFINED, /* 168 */ - TPM_UNDEFINED, /* 169 */ - TPM_UNDEFINED, /* 16a */ - TPM_UNDEFINED, /* 16b */ - TPM_UNDEFINED, /* 16c */ - TPM_UNDEFINED, /* 16d */ - TPM_UNDEFINED, /* 16e */ - TPM_UNDEFINED, /* 16f */ - TPM_UNDEFINED, /* 170 */ - TPM_UNDEFINED, /* 171 */ - TPM_UNDEFINED, /* 172 */ - TPM_UNDEFINED, /* 173 */ - TPM_UNDEFINED, /* 174 */ - TPM_UNDEFINED, /* 175 */ - TPM_UNDEFINED, /* 176 */ - TPM_LONG, /* 177 */ - TPM_UNDEFINED, /* 178 */ - TPM_UNDEFINED, /* 179 */ - TPM_MEDIUM, /* 17a */ - TPM_LONG, /* 17b */ - TPM_UNDEFINED, /* 17c */ - TPM_UNDEFINED, /* 17d */ - TPM_UNDEFINED, /* 17e */ - TPM_UNDEFINED, /* 17f */ - TPM_UNDEFINED, /* 180 */ - TPM_UNDEFINED, /* 181 */ - TPM_MEDIUM, /* 182 */ - TPM_UNDEFINED, /* 183 */ - TPM_UNDEFINED, /* 184 */ - TPM_MEDIUM, /* 185 */ - TPM_MEDIUM, /* 186 */ - TPM_UNDEFINED, /* 187 */ - TPM_UNDEFINED, /* 188 */ - TPM_UNDEFINED, /* 189 */ - TPM_UNDEFINED, /* 18a */ - TPM_UNDEFINED, /* 18b */ - TPM_UNDEFINED, /* 18c */ - TPM_UNDEFINED, /* 18d */ - TPM_UNDEFINED, /* 18e */ - TPM_UNDEFINED /* 18f */ -}; +static u8 tpm2_ordinal_duration_index(u32 ordinal) +{ + switch (ordinal) { + /* Startup */ + case TPM2_CC_STARTUP: /* 144 */ + return TPM_MEDIUM; + + case TPM2_CC_SELF_TEST: /* 143 */ + return TPM_LONG; + + case TPM2_CC_GET_RANDOM: /* 17B */ + return TPM_LONG; + + case TPM2_CC_SEQUENCE_UPDATE: /* 15C */ + return TPM_MEDIUM; + case TPM2_CC_SEQUENCE_COMPLETE: /* 13E */ + return TPM_MEDIUM; + case TPM2_CC_EVENT_SEQUENCE_COMPLETE: /* 185 */ + return TPM_MEDIUM; + case TPM2_CC_HASH_SEQUENCE_START: /* 186 */ + return TPM_MEDIUM; + + case TPM2_CC_VERIFY_SIGNATURE: /* 177 */ + return TPM_LONG; + + case TPM2_CC_PCR_EXTEND: /* 182 */ + return TPM_MEDIUM; + + case TPM2_CC_HIERARCHY_CONTROL: /* 121 */ + return TPM_LONG; + case TPM2_CC_HIERARCHY_CHANGE_AUTH: /* 129 */ + return TPM_LONG; + + case TPM2_CC_GET_CAPABILITY: /* 17A */ + return TPM_MEDIUM; + + case TPM2_CC_NV_READ: /* 14E */ + return TPM_LONG; + + case TPM2_CC_CREATE_PRIMARY: /* 131 */ + return TPM_LONG_LONG; + case TPM2_CC_CREATE: /* 153 */ + return TPM_LONG_LONG; + case TPM2_CC_CREATE_LOADED: /* 191 */ + return TPM_LONG_LONG; + + default: + return TPM_UNDEFINED; + } +} + +/** + * tpm2_calc_ordinal_duration() - calculate the maximum command duration + * @chip: TPM chip to use. + * @ordinal: TPM command ordinal. + * + * The function returns the maximum amount of time the chip could take + * to return the result for a particular ordinal in jiffies. + * + * Return: A maximal duration time for an ordinal in jiffies. + */ +unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal) +{ + unsigned int index; + + index = tpm2_ordinal_duration_index(ordinal); + + if (index != TPM_UNDEFINED) + return chip->duration[index]; + else + return msecs_to_jiffies(TPM2_DURATION_DEFAULT); +} +EXPORT_SYMBOL_GPL(tpm2_calc_ordinal_duration); + struct tpm2_pcr_read_out { __be32 update_cnt; @@ -748,32 +719,6 @@ void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type) tpm_buf_destroy(&buf); } -/* - * tpm2_calc_ordinal_duration() - maximum duration for a command - * - * @chip: TPM chip to use. - * @ordinal: command code number. - * - * Return: maximum duration for a command - */ -unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal) -{ - int index = TPM_UNDEFINED; - int duration = 0; - - if (ordinal >= TPM2_CC_FIRST && ordinal <= TPM2_CC_LAST) - index = tpm2_ordinal_duration[ordinal - TPM2_CC_FIRST]; - - if (index != TPM_UNDEFINED) - duration = chip->duration[index]; - - if (duration <= 0) - duration = msecs_to_jiffies(TPM2_DURATION_DEFAULT); - - return duration; -} -EXPORT_SYMBOL_GPL(tpm2_calc_ordinal_duration); - /** * tpm2_do_selftest() - ensure that all self tests have passed *