From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 968F9ECE567 for ; Tue, 18 Sep 2018 09:39:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4DE7C206B7 for ; Tue, 18 Sep 2018 09:39:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4DE7C206B7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729862AbeIRPKO (ORCPT ); Tue, 18 Sep 2018 11:10:14 -0400 Received: from mga01.intel.com ([192.55.52.88]:59396 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729746AbeIRPKN (ORCPT ); Tue, 18 Sep 2018 11:10:13 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Sep 2018 02:38:23 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,389,1531810800"; d="scan'208";a="71724173" Received: from twinkler-lnx.jer.intel.com ([10.12.91.48]) by fmsmga008.fm.intel.com with ESMTP; 18 Sep 2018 02:38:19 -0700 From: Tomas Winkler To: Jarkko Sakkinen , Jason Gunthorpe Cc: Alexander Usyskin , Tadeusz Struk , linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, Tomas Winkler Subject: [PATCH v3 11/20] tpm: factor out tpm_startup function Date: Tue, 18 Sep 2018 12:34:50 +0300 Message-Id: <20180918093459.19165-12-tomas.winkler@intel.com> X-Mailer: git-send-email 2.14.4 In-Reply-To: <20180918093459.19165-1-tomas.winkler@intel.com> References: <20180918093459.19165-1-tomas.winkler@intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tpm manual startup is used only from within tpm1 or tpm2 code, hence remove tpm_startup function from tpm-interface.c and add two static functions implementations tpm1_startup and tpm2_startup into to tpm1-cmd.c and tpm2-cmd.c respectively. Signed-off-by: Tomas Winkler --- V2-V3: Rebase drivers/char/tpm/tpm-interface.c | 41 ---------------------------------------- drivers/char/tpm/tpm.h | 1 - drivers/char/tpm/tpm1-cmd.c | 37 +++++++++++++++++++++++++++++++++++- drivers/char/tpm/tpm2-cmd.c | 34 +++++++++++++++++++++++++++++++-- 4 files changed, 68 insertions(+), 45 deletions(-) diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index 1ddf9d7e2069..3a2eef9e8665 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -403,47 +403,6 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space, } EXPORT_SYMBOL_GPL(tpm_transmit_cmd); -#define TPM_ORD_STARTUP 153 -#define TPM_ST_CLEAR 1 - -/** - * tpm_startup - turn on the TPM - * @chip: TPM chip to use - * - * Normally the firmware should start the TPM. This function is provided as a - * workaround if this does not happen. A legal case for this could be for - * example when a TPM emulator is used. - * - * Return: same as tpm_transmit_cmd() - */ -int tpm_startup(struct tpm_chip *chip) -{ - struct tpm_buf buf; - int rc; - - dev_info(&chip->dev, "starting up the TPM manually\n"); - - if (chip->flags & TPM_CHIP_FLAG_TPM2) { - rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_STARTUP); - if (rc < 0) - return rc; - - tpm_buf_append_u16(&buf, TPM2_SU_CLEAR); - } else { - rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_STARTUP); - if (rc < 0) - return rc; - - tpm_buf_append_u16(&buf, TPM_ST_CLEAR); - } - - rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0, - "attempting to start the TPM"); - - tpm_buf_destroy(&buf); - return rc; -} - int tpm_get_timeouts(struct tpm_chip *chip) { if (chip->flags & TPM_CHIP_FLAG_HAVE_TIMEOUTS) diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 862c9262e037..fa88102a0cab 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -540,7 +540,6 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space, void *buf, size_t bufsiz, size_t min_rsp_body_length, unsigned int flags, const char *desc); -int tpm_startup(struct tpm_chip *chip); int tpm_get_timeouts(struct tpm_chip *); int tpm1_pm_suspend(struct tpm_chip *chip, int tpm_suspend_pcr); diff --git a/drivers/char/tpm/tpm1-cmd.c b/drivers/char/tpm/tpm1-cmd.c index 5fdc44feea0f..f93776621e49 100644 --- a/drivers/char/tpm/tpm1-cmd.c +++ b/drivers/char/tpm/tpm1-cmd.c @@ -307,6 +307,40 @@ unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal) return duration; } +#define TPM_ORD_STARTUP 153 +#define TPM_ST_CLEAR 1 + +/** + * tpm_startup - turn on the TPM + * @chip: TPM chip to use + * + * Normally the firmware should start the TPM. This function is provided as a + * workaround if this does not happen. A legal case for this could be for + * example when a TPM emulator is used. + * + * Return: same as tpm_transmit_cmd() + */ +static int tpm1_startup(struct tpm_chip *chip) +{ + struct tpm_buf buf; + int rc; + + dev_info(&chip->dev, "starting up the TPM manually\n"); + + rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_STARTUP); + if (rc < 0) + return rc; + + tpm_buf_append_u16(&buf, TPM_ST_CLEAR); + + rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0, + "attempting to start the TPM"); + + tpm_buf_destroy(&buf); + + return rc; +} + int tpm1_get_timeouts(struct tpm_chip *chip) { cap_t cap; @@ -316,7 +350,7 @@ int tpm1_get_timeouts(struct tpm_chip *chip) rc = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, NULL, sizeof(cap.timeout)); if (rc == TPM_ERR_INVALID_POSTINIT) { - if (tpm_startup(chip)) + if (tpm1_startup(chip)) return rc; rc = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, @@ -721,3 +755,4 @@ int tpm1_pm_suspend(struct tpm_chip *chip, int tpm_suspend_pcr) return rc; } + diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index 4ca0555f23c8..333631eab4c7 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -943,6 +943,36 @@ static int tpm2_get_cc_attrs_tbl(struct tpm_chip *chip) return rc; } +/** + * tpm2_startup - turn on the TPM + * @chip: TPM chip to use + * + * Normally the firmware should start the TPM. This function is provided as a + * workaround if this does not happen. A legal case for this could be for + * example when a TPM emulator is used. + * + * Return: same as tpm_transmit_cmd() + */ + +static int tpm2_startup(struct tpm_chip *chip) +{ + struct tpm_buf buf; + int rc; + + dev_info(&chip->dev, "starting up the TPM manually\n"); + + rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_STARTUP); + if (rc < 0) + return rc; + + tpm_buf_append_u16(&buf, TPM2_SU_CLEAR); + rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0, + "attempting to start the TPM"); + tpm_buf_destroy(&buf); + + return rc; +} + /** * tpm2_auto_startup - Perform the standard automatic TPM initialization * sequence @@ -954,7 +984,7 @@ int tpm2_auto_startup(struct tpm_chip *chip) { int rc; - rc = tpm_get_timeouts(chip); + rc = tpm2_get_timeouts(chip); if (rc) goto out; @@ -963,7 +993,7 @@ int tpm2_auto_startup(struct tpm_chip *chip) goto out; if (rc == TPM2_RC_INITIALIZE) { - rc = tpm_startup(chip); + rc = tpm2_startup(chip); if (rc) goto out; -- 2.14.4 From mboxrd@z Thu Jan 1 00:00:00 1970 From: tomas.winkler@intel.com (Tomas Winkler) Date: Tue, 18 Sep 2018 12:34:50 +0300 Subject: [PATCH v3 11/20] tpm: factor out tpm_startup function In-Reply-To: <20180918093459.19165-1-tomas.winkler@intel.com> References: <20180918093459.19165-1-tomas.winkler@intel.com> Message-ID: <20180918093459.19165-12-tomas.winkler@intel.com> To: linux-security-module@vger.kernel.org List-Id: linux-security-module.vger.kernel.org tpm manual startup is used only from within tpm1 or tpm2 code, hence remove tpm_startup function from tpm-interface.c and add two static functions implementations tpm1_startup and tpm2_startup into to tpm1-cmd.c and tpm2-cmd.c respectively. Signed-off-by: Tomas Winkler --- V2-V3: Rebase drivers/char/tpm/tpm-interface.c | 41 ---------------------------------------- drivers/char/tpm/tpm.h | 1 - drivers/char/tpm/tpm1-cmd.c | 37 +++++++++++++++++++++++++++++++++++- drivers/char/tpm/tpm2-cmd.c | 34 +++++++++++++++++++++++++++++++-- 4 files changed, 68 insertions(+), 45 deletions(-) diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index 1ddf9d7e2069..3a2eef9e8665 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -403,47 +403,6 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space, } EXPORT_SYMBOL_GPL(tpm_transmit_cmd); -#define TPM_ORD_STARTUP 153 -#define TPM_ST_CLEAR 1 - -/** - * tpm_startup - turn on the TPM - * @chip: TPM chip to use - * - * Normally the firmware should start the TPM. This function is provided as a - * workaround if this does not happen. A legal case for this could be for - * example when a TPM emulator is used. - * - * Return: same as tpm_transmit_cmd() - */ -int tpm_startup(struct tpm_chip *chip) -{ - struct tpm_buf buf; - int rc; - - dev_info(&chip->dev, "starting up the TPM manually\n"); - - if (chip->flags & TPM_CHIP_FLAG_TPM2) { - rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_STARTUP); - if (rc < 0) - return rc; - - tpm_buf_append_u16(&buf, TPM2_SU_CLEAR); - } else { - rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_STARTUP); - if (rc < 0) - return rc; - - tpm_buf_append_u16(&buf, TPM_ST_CLEAR); - } - - rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0, - "attempting to start the TPM"); - - tpm_buf_destroy(&buf); - return rc; -} - int tpm_get_timeouts(struct tpm_chip *chip) { if (chip->flags & TPM_CHIP_FLAG_HAVE_TIMEOUTS) diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h index 862c9262e037..fa88102a0cab 100644 --- a/drivers/char/tpm/tpm.h +++ b/drivers/char/tpm/tpm.h @@ -540,7 +540,6 @@ ssize_t tpm_transmit_cmd(struct tpm_chip *chip, struct tpm_space *space, void *buf, size_t bufsiz, size_t min_rsp_body_length, unsigned int flags, const char *desc); -int tpm_startup(struct tpm_chip *chip); int tpm_get_timeouts(struct tpm_chip *); int tpm1_pm_suspend(struct tpm_chip *chip, int tpm_suspend_pcr); diff --git a/drivers/char/tpm/tpm1-cmd.c b/drivers/char/tpm/tpm1-cmd.c index 5fdc44feea0f..f93776621e49 100644 --- a/drivers/char/tpm/tpm1-cmd.c +++ b/drivers/char/tpm/tpm1-cmd.c @@ -307,6 +307,40 @@ unsigned long tpm1_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal) return duration; } +#define TPM_ORD_STARTUP 153 +#define TPM_ST_CLEAR 1 + +/** + * tpm_startup - turn on the TPM + * @chip: TPM chip to use + * + * Normally the firmware should start the TPM. This function is provided as a + * workaround if this does not happen. A legal case for this could be for + * example when a TPM emulator is used. + * + * Return: same as tpm_transmit_cmd() + */ +static int tpm1_startup(struct tpm_chip *chip) +{ + struct tpm_buf buf; + int rc; + + dev_info(&chip->dev, "starting up the TPM manually\n"); + + rc = tpm_buf_init(&buf, TPM_TAG_RQU_COMMAND, TPM_ORD_STARTUP); + if (rc < 0) + return rc; + + tpm_buf_append_u16(&buf, TPM_ST_CLEAR); + + rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0, + "attempting to start the TPM"); + + tpm_buf_destroy(&buf); + + return rc; +} + int tpm1_get_timeouts(struct tpm_chip *chip) { cap_t cap; @@ -316,7 +350,7 @@ int tpm1_get_timeouts(struct tpm_chip *chip) rc = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, NULL, sizeof(cap.timeout)); if (rc == TPM_ERR_INVALID_POSTINIT) { - if (tpm_startup(chip)) + if (tpm1_startup(chip)) return rc; rc = tpm1_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, @@ -721,3 +755,4 @@ int tpm1_pm_suspend(struct tpm_chip *chip, int tpm_suspend_pcr) return rc; } + diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index 4ca0555f23c8..333631eab4c7 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -943,6 +943,36 @@ static int tpm2_get_cc_attrs_tbl(struct tpm_chip *chip) return rc; } +/** + * tpm2_startup - turn on the TPM + * @chip: TPM chip to use + * + * Normally the firmware should start the TPM. This function is provided as a + * workaround if this does not happen. A legal case for this could be for + * example when a TPM emulator is used. + * + * Return: same as tpm_transmit_cmd() + */ + +static int tpm2_startup(struct tpm_chip *chip) +{ + struct tpm_buf buf; + int rc; + + dev_info(&chip->dev, "starting up the TPM manually\n"); + + rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_STARTUP); + if (rc < 0) + return rc; + + tpm_buf_append_u16(&buf, TPM2_SU_CLEAR); + rc = tpm_transmit_cmd(chip, NULL, buf.data, PAGE_SIZE, 0, 0, + "attempting to start the TPM"); + tpm_buf_destroy(&buf); + + return rc; +} + /** * tpm2_auto_startup - Perform the standard automatic TPM initialization * sequence @@ -954,7 +984,7 @@ int tpm2_auto_startup(struct tpm_chip *chip) { int rc; - rc = tpm_get_timeouts(chip); + rc = tpm2_get_timeouts(chip); if (rc) goto out; @@ -963,7 +993,7 @@ int tpm2_auto_startup(struct tpm_chip *chip) goto out; if (rc == TPM2_RC_INITIALIZE) { - rc = tpm_startup(chip); + rc = tpm2_startup(chip); if (rc) goto out; -- 2.14.4