From patchwork Fri Oct 27 23:02:37 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 10030817 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id ED0306034B for ; Fri, 27 Oct 2017 23:07:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ED9FF28FD9 for ; Fri, 27 Oct 2017 23:07:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E125928FFB; Fri, 27 Oct 2017 23:07:12 +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=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8B0C128FD9 for ; Fri, 27 Oct 2017 23:07:12 +0000 (UTC) Received: from localhost ([::1]:59195 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e8DiZ-0004vY-Lb for patchwork-qemu-devel@patchwork.kernel.org; Fri, 27 Oct 2017 19:07:11 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40044) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e8Dee-0002f6-UA for qemu-devel@nongnu.org; Fri, 27 Oct 2017 19:03:10 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e8DeY-0003wT-S9 for qemu-devel@nongnu.org; Fri, 27 Oct 2017 19:03:08 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:56922 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e8DeY-0003vh-Jo for qemu-devel@nongnu.org; Fri, 27 Oct 2017 19:03:02 -0400 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v9RMwlUk034069 for ; Fri, 27 Oct 2017 19:02:56 -0400 Received: from e13.ny.us.ibm.com (e13.ny.us.ibm.com [129.33.205.203]) by mx0b-001b2d01.pphosted.com with ESMTP id 2dv8bdnvvm-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Fri, 27 Oct 2017 19:02:55 -0400 Received: from localhost by e13.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Fri, 27 Oct 2017 19:02:53 -0400 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp23033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v9RN2rGw3342692; Fri, 27 Oct 2017 23:02:53 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 55804AC03F; Fri, 27 Oct 2017 19:03:38 -0400 (EDT) Received: from sbct-3.watson.ibm.com (unknown [9.47.158.153]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP id 48B7AAC03A; Fri, 27 Oct 2017 19:03:38 -0400 (EDT) From: Stefan Berger To: qemu-devel@nongnu.org Date: Fri, 27 Oct 2017 19:02:37 -0400 X-Mailer: git-send-email 2.5.5 In-Reply-To: <1509145361-11218-1-git-send-email-stefanb@linux.vnet.ibm.com> References: <1509145361-11218-1-git-send-email-stefanb@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 17102723-0008-0000-0000-000002978C76 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007964; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000239; SDB=6.00937412; UDB=6.00472471; IPR=6.00717675; BA=6.00005660; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00017751; XFM=3.00000015; UTC=2017-10-27 23:02:54 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17102723-0009-0000-0000-00003723844B Message-Id: <1509145361-11218-4-git-send-email-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-10-27_10:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000 definitions=main-1710270296 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH v2 3/7] tpm: implement tpm_backend_wait_cmd_completed X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: amarnath.valluri@intel.com, marcandre.lureau@gmail.com, Stefan Berger Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Implement tpm_backend_wait_cmd_completed to synchronize with the backend (thread) for the completion of a command. Signed-off-by: Stefan Berger --- backends/tpm.c | 10 ++++++++++ include/sysemu/tpm_backend.h | 8 ++++++++ 2 files changed, 18 insertions(+) diff --git a/backends/tpm.c b/backends/tpm.c index 2f60166..6e26832 100644 --- a/backends/tpm.c +++ b/backends/tpm.c @@ -28,6 +28,16 @@ void tpm_backend_cmd_completed(TPMBackend *s) qemu_mutex_unlock(&s->state_lock); } +void tpm_backend_wait_cmd_completed(TPMBackend *s) +{ + qemu_mutex_lock(&s->state_lock); + + if (s->tpm_busy) { + qemu_cond_wait(&s->cmd_complete, &s->state_lock); + } + qemu_mutex_unlock(&s->state_lock); +} + static void tpm_backend_request_completed_bh(void *opaque) { TPMBackend *s = TPM_BACKEND(opaque); diff --git a/include/sysemu/tpm_backend.h b/include/sysemu/tpm_backend.h index e08c51d..8c271f4 100644 --- a/include/sysemu/tpm_backend.h +++ b/include/sysemu/tpm_backend.h @@ -207,6 +207,14 @@ TPMInfo *tpm_backend_query_tpm(TPMBackend *s); */ void tpm_backend_cmd_completed(TPMBackend *s); +/** + * tpm_backend_wait_cmd_completed: + * @s: the backend + * + * Wait the backend to not be busy anymore + */ +void tpm_backend_wait_cmd_completed(TPMBackend *s); + TPMBackend *qemu_find_tpm_be(const char *id); void tpm_register_model(enum TpmModel model);