From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dong Jia Shi Subject: [PATCH v7 12/13] vfio/ccw: update sense data if a unit check is pending Date: Fri, 5 May 2017 04:03:51 +0200 Message-ID: <20170505020352.8984-13-bjsdjshi@linux.vnet.ibm.com> References: <20170505020352.8984-1-bjsdjshi@linux.vnet.ibm.com> Cc: bjsdjshi@linux.vnet.ibm.com, cornelia.huck@de.ibm.com, borntraeger@de.ibm.com, agraf@suse.com, alex.williamson@redhat.com, eric.auger@redhat.com To: kvm@vger.kernel.org, linux-s390@vger.kernel.org, qemu-devel@nongnu.org Return-path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:52323 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753329AbdEECEg (ORCPT ); Thu, 4 May 2017 22:04:36 -0400 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v4523atb021153 for ; Thu, 4 May 2017 22:04:36 -0400 Received: from e14.ny.us.ibm.com (e14.ny.us.ibm.com [129.33.205.204]) by mx0a-001b2d01.pphosted.com with ESMTP id 2a8b9y2sfs-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 04 May 2017 22:04:35 -0400 Received: from localhost by e14.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 4 May 2017 22:04:34 -0400 In-Reply-To: <20170505020352.8984-1-bjsdjshi@linux.vnet.ibm.com> Sender: kvm-owner@vger.kernel.org List-ID: Concurrent-sense data is currently not delivered. This patch stores the concurrent-sense data to the subchannel if a unit check is pending and the concurrent-sense bit is enabled. Then a TSCH can retreive the right IRB data back to the guest. Signed-off-by: Dong Jia Shi --- hw/vfio/ccw.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/vfio/ccw.c b/hw/vfio/ccw.c index 3c8b518..73f326f 100644 --- a/hw/vfio/ccw.c +++ b/hw/vfio/ccw.c @@ -94,6 +94,7 @@ static void vfio_ccw_io_notifier_handler(void *opaque) CcwDevice *ccw_dev = CCW_DEVICE(cdev); SubchDev *sch = ccw_dev->sch; SCSW *s = &sch->curr_status.scsw; + PMCW *p = &sch->curr_status.pmcw; IRB irb; int size; @@ -143,6 +144,12 @@ static void vfio_ccw_io_notifier_handler(void *opaque) /* Update control block via irb. */ copy_scsw_to_guest(s, &irb.scsw); + /* If a uint check is pending, copy sense data. */ + if ((s->dstat & SCSW_DSTAT_UNIT_CHECK) && + (p->chars & PMCW_CHARS_MASK_CSENSE)) { + memcpy(sch->sense_data, irb.ecw, sizeof(irb.ecw)); + } + read_err: css_inject_io_interrupt(sch); } -- 2.10.2