From patchwork Thu May 24 16:14:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Stefan Berger X-Patchwork-Id: 919975 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.vnet.ibm.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40sF7c2QXmz9s0q for ; Fri, 25 May 2018 02:23:56 +1000 (AEST) Received: from localhost ([::1]:39645 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fLt1u-0006Lm-0t for incoming@patchwork.ozlabs.org; Thu, 24 May 2018 12:23:54 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60776) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fLsuO-0000qv-Ky for qemu-devel@nongnu.org; Thu, 24 May 2018 12:16:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fLsuJ-0005RP-IS for qemu-devel@nongnu.org; Thu, 24 May 2018 12:16:08 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:44516 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 1fLsuJ-0005RE-C5 for qemu-devel@nongnu.org; Thu, 24 May 2018 12:16:03 -0400 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w4OGE6uR133136 for ; Thu, 24 May 2018 12:16:02 -0400 Received: from e34.co.us.ibm.com (e34.co.us.ibm.com [32.97.110.152]) by mx0b-001b2d01.pphosted.com with ESMTP id 2j5yr7kcm5-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 24 May 2018 12:16:02 -0400 Received: from localhost by e34.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Thu, 24 May 2018 10:15:59 -0600 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w4OGEenN9044302; Thu, 24 May 2018 09:14:40 -0700 Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7054F6A03B; Thu, 24 May 2018 10:14:40 -0600 (MDT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP id 1367C6A03C; Thu, 24 May 2018 10:14:40 -0600 (MDT) From: Stefan Berger To: qemu-devel@nongnu.org Date: Thu, 24 May 2018 12:14:33 -0400 X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180524161435.3012991-1-stefanb@linux.vnet.ibm.com> References: <20180524161435.3012991-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 18052416-0016-0000-0000-000008CB8B86 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009076; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000261; SDB=6.01037038; UDB=6.00530569; IPR=6.00816163; MB=3.00021281; MTD=3.00000008; XFM=3.00000015; UTC=2018-05-24 16:16:00 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18052416-0017-0000-0000-00003EE5A511 Message-Id: <20180524161435.3012991-3-stefanb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2018-05-24_06:, , 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=8.0.1-1709140000 definitions=main-1805240187 X-MIME-Autoconverted: from 8bit to quoted-printable by mx0b-001b2d01.pphosted.com id w4OGE6uR133136 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PULL v2 2/4] tpm: extend TPM TIS with state migration support 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: peter.maydell@linaro.org, Stefan Berger , marcandre.lureau@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Extend the TPM TIS interface with state migration support. We need to synchronize with the backend thread to make sure that a command being processed by the external TPM emulator has completed and its response been received. Signed-off-by: Stefan Berger Reviewed-by: Dr. David Alan Gilbert Reviewed-by: Marc-André Lureau --- hw/tpm/tpm_tis.c | 52 ++++++++++++++++++++++++++++++++++++++++++++++++++-- hw/tpm/trace-events | 1 + 2 files changed, 51 insertions(+), 2 deletions(-) diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c index 2ac7e74307..12f5c9a759 100644 --- a/hw/tpm/tpm_tis.c +++ b/hw/tpm/tpm_tis.c @@ -894,9 +894,57 @@ static void tpm_tis_reset(DeviceState *dev) tpm_backend_startup_tpm(s->be_driver, s->be_buffer_size); } +/* persistent state handling */ + +static int tpm_tis_pre_save(void *opaque) +{ + TPMState *s = opaque; + uint8_t locty = s->active_locty; + + trace_tpm_tis_pre_save(locty, s->rw_offset); + + if (DEBUG_TIS) { + tpm_tis_dump_state(opaque, 0); + } + + /* + * Synchronize with backend completion. + */ + tpm_backend_finish_sync(s->be_driver); + + return 0; +} + +static const VMStateDescription vmstate_locty = { + .name = "tpm-tis/locty", + .version_id = 0, + .fields = (VMStateField[]) { + VMSTATE_UINT32(state, TPMLocality), + VMSTATE_UINT32(inte, TPMLocality), + VMSTATE_UINT32(ints, TPMLocality), + VMSTATE_UINT8(access, TPMLocality), + VMSTATE_UINT32(sts, TPMLocality), + VMSTATE_UINT32(iface_id, TPMLocality), + VMSTATE_END_OF_LIST(), + } +}; + static const VMStateDescription vmstate_tpm_tis = { - .name = "tpm", - .unmigratable = 1, + .name = "tpm-tis", + .version_id = 0, + .pre_save = tpm_tis_pre_save, + .fields = (VMStateField[]) { + VMSTATE_BUFFER(buffer, TPMState), + VMSTATE_UINT16(rw_offset, TPMState), + VMSTATE_UINT8(active_locty, TPMState), + VMSTATE_UINT8(aborting_locty, TPMState), + VMSTATE_UINT8(next_locty, TPMState), + + VMSTATE_STRUCT_ARRAY(loc, TPMState, TPM_TIS_NUM_LOCALITIES, 0, + vmstate_locty, TPMLocality), + + VMSTATE_END_OF_LIST() + } }; static Property tpm_tis_properties[] = { diff --git a/hw/tpm/trace-events b/hw/tpm/trace-events index c5bfbf1d4b..25bee0cecf 100644 --- a/hw/tpm/trace-events +++ b/hw/tpm/trace-events @@ -50,3 +50,4 @@ tpm_tis_mmio_write_locty_seized(uint8_t locty, uint8_t active) "Locality %d seiz tpm_tis_mmio_write_init_abort(void) "Initiating abort" tpm_tis_mmio_write_lowering_irq(void) "Lowering IRQ" tpm_tis_mmio_write_data2send(uint32_t value, unsigned size) "Data to send to TPM: 0x%08x (size=%d)" +tpm_tis_pre_save(uint8_t locty, uint32_t rw_offset) "locty: %d, rw_offset = %u"