From patchwork Wed Jan 9 22:11:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 10754939 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 85C2A13B4 for ; Wed, 9 Jan 2019 22:11:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7667D29616 for ; Wed, 9 Jan 2019 22:11:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6AA9E29650; Wed, 9 Jan 2019 22:11:26 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham 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 0671F29657 for ; Wed, 9 Jan 2019 22:11:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727573AbfAIWLU (ORCPT ); Wed, 9 Jan 2019 17:11:20 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:44928 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727655AbfAIWLT (ORCPT ); Wed, 9 Jan 2019 17:11:19 -0500 Received: from pps.filterd (m0098420.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id x09M9lEJ011235 for ; Wed, 9 Jan 2019 17:11:18 -0500 Received: from e32.co.us.ibm.com (e32.co.us.ibm.com [32.97.110.150]) by mx0b-001b2d01.pphosted.com with ESMTP id 2pwrq820em-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 09 Jan 2019 17:11:18 -0500 Received: from localhost by e32.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 9 Jan 2019 22:11:14 -0000 Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x09MBDST24641662 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 9 Jan 2019 22:11:13 GMT Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D7728BE720; Wed, 9 Jan 2019 22:11:13 +0000 (GMT) Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 77B7CBE70A; Wed, 9 Jan 2019 22:11:13 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP; Wed, 9 Jan 2019 22:11:13 +0000 (GMT) From: Stefan Berger To: linux-integrity@vger.kernel.org, jarkko.sakkinen@linux.intel.com Cc: linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, Stefan Berger Subject: [PATCH 5/5] tpm: ppi: Enable submission of optional command parameter for PPI 1.3 Date: Wed, 9 Jan 2019 17:11:03 -0500 X-Mailer: git-send-email 2.17.2 In-Reply-To: <20190109221103.1897677-1-stefanb@linux.vnet.ibm.com> References: <20190109221103.1897677-1-stefanb@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19010922-0004-0000-0000-000014CFC6AC X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00010375; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000274; SDB=6.01144159; UDB=6.00595717; IPR=6.00924422; MB=3.00025056; MTD=3.00000008; XFM=3.00000015; UTC=2019-01-09 22:11:16 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19010922-0005-0000-0000-00008A289693 Message-Id: <20190109221103.1897677-6-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-01-09_11:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901090176 Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch enables a user to specify the additional optional command parameter by writing it into the request file: # echo "23 16" > request # cat request 23 16 For backwards compatibility: If only 1 parameter is given then we assume this is the operation request number. # echo "5" > request Signed-off-by: Stefan Berger --- drivers/char/tpm/tpm_ppi.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/char/tpm/tpm_ppi.c b/drivers/char/tpm/tpm_ppi.c index ab61ee208125..a07bdf6a4ddf 100644 --- a/drivers/char/tpm/tpm_ppi.c +++ b/drivers/char/tpm/tpm_ppi.c @@ -121,9 +121,10 @@ static ssize_t tpm_store_ppi_request(struct device *dev, u32 req; u64 ret; int func = TPM_PPI_FN_SUBREQ; - union acpi_object *obj, tmp; - union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(1, &tmp); + union acpi_object *obj, tmp[2]; + union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(2, tmp); struct tpm_chip *chip = to_tpm_chip(dev); + u64 rev = TPM_PPI_REVISION_1; /* * the function to submit TPM operation request to pre-os environment @@ -140,20 +141,29 @@ static ssize_t tpm_store_ppi_request(struct device *dev, * string/package type. For PPI version 1.0 and 1.1, use buffer type * for compatibility, and use package type since 1.2 according to spec. */ - if (strcmp(chip->ppi_version, "1.2") < 0) { + if (strcmp(chip->ppi_version, "1.3") == 0) { + if (sscanf(buf, "%llu %llu", &tmp[0].integer.value, + &tmp[1].integer.value) != 2) + goto ppi12; + rev = TPM_PPI_REVISION_2; + tmp[0].type = ACPI_TYPE_INTEGER; + tmp[1].type = ACPI_TYPE_INTEGER; + } else if (strcmp(chip->ppi_version, "1.2") < 0) { if (sscanf(buf, "%d", &req) != 1) return -EINVAL; argv4.type = ACPI_TYPE_BUFFER; argv4.buffer.length = sizeof(req); argv4.buffer.pointer = (u8 *)&req; } else { - tmp.type = ACPI_TYPE_INTEGER; - if (sscanf(buf, "%llu", &tmp.integer.value) != 1) +ppi12: + argv4.package.count = 1; + tmp[0].type = ACPI_TYPE_INTEGER; + if (sscanf(buf, "%llu", &tmp[0].integer.value) != 1) return -EINVAL; } obj = tpm_eval_dsm(chip->acpi_dev_handle, func, ACPI_TYPE_INTEGER, - &argv4, TPM_PPI_REVISION_1); + &argv4, rev); if (!obj) { return -ENXIO; } else {