From patchwork Tue Dec 2 13:00:17 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 5419831 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 93584BEEA8 for ; Tue, 2 Dec 2014 13:00:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C4CF0202B8 for ; Tue, 2 Dec 2014 13:00:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC5802021B for ; Tue, 2 Dec 2014 13:00:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933154AbaLBNAt (ORCPT ); Tue, 2 Dec 2014 08:00:49 -0500 Received: from e06smtp15.uk.ibm.com ([195.75.94.111]:58462 "EHLO e06smtp15.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754571AbaLBNAq (ORCPT ); Tue, 2 Dec 2014 08:00:46 -0500 Received: from /spool/local by e06smtp15.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 2 Dec 2014 13:00:43 -0000 Received: from b06cxnps3074.portsmouth.uk.ibm.com (d06relay09.portsmouth.uk.ibm.com [9.149.109.194]) by d06dlp03.portsmouth.uk.ibm.com (Postfix) with ESMTP id EFEBE1B0806B for ; Tue, 2 Dec 2014 13:00:59 +0000 (GMT) Received: from d06av10.portsmouth.uk.ibm.com (d06av10.portsmouth.uk.ibm.com [9.149.37.251]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id sB2D0g6v4587644 for ; Tue, 2 Dec 2014 13:00:42 GMT Received: from d06av10.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av10.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id sB2D0fsw007540 for ; Tue, 2 Dec 2014 06:00:42 -0700 Received: from gondolin.boeblingen.de.ibm.com (dyn-9-152-224-210.boeblingen.de.ibm.com [9.152.224.210]) by d06av10.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id sB2D0X4O006940; Tue, 2 Dec 2014 06:00:40 -0700 From: Cornelia Huck To: virtualization@lists.linux-foundation.org, qemu-devel@nongnu.org, kvm@vger.kernel.org Cc: rusty@rustcorp.com.au, thuth@linux.vnet.ibm.com, mst@redhat.com, Cornelia Huck Subject: [PATCH RFC v5 09/19] s390x/css: Add a callback for when subchannel gets disabled Date: Tue, 2 Dec 2014 14:00:17 +0100 Message-Id: <1417525227-14051-10-git-send-email-cornelia.huck@de.ibm.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1417525227-14051-1-git-send-email-cornelia.huck@de.ibm.com> References: <1417525227-14051-1-git-send-email-cornelia.huck@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14120213-0021-0000-0000-000001FD1622 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Thomas Huth We need a possibility to run code when a subchannel gets disabled. This patch adds the necessary infrastructure. Signed-off-by: Thomas Huth Signed-off-by: Cornelia Huck --- hw/s390x/css.c | 12 ++++++++++++ hw/s390x/css.h | 1 + 2 files changed, 13 insertions(+) diff --git a/hw/s390x/css.c b/hw/s390x/css.c index b67c039..735ec55 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -588,6 +588,7 @@ int css_do_msch(SubchDev *sch, SCHIB *orig_schib) { SCSW *s = &sch->curr_status.scsw; PMCW *p = &sch->curr_status.pmcw; + uint16_t oldflags; int ret; SCHIB schib; @@ -610,6 +611,7 @@ int css_do_msch(SubchDev *sch, SCHIB *orig_schib) copy_schib_from_guest(&schib, orig_schib); /* Only update the program-modifiable fields. */ p->intparm = schib.pmcw.intparm; + oldflags = p->flags; p->flags &= ~(PMCW_FLAGS_MASK_ISC | PMCW_FLAGS_MASK_ENA | PMCW_FLAGS_MASK_LM | PMCW_FLAGS_MASK_MME | PMCW_FLAGS_MASK_MP); @@ -625,6 +627,12 @@ int css_do_msch(SubchDev *sch, SCHIB *orig_schib) (PMCW_CHARS_MASK_MBFC | PMCW_CHARS_MASK_CSENSE); sch->curr_status.mba = schib.mba; + /* Has the channel been disabled? */ + if (sch->disable_cb && (oldflags & PMCW_FLAGS_MASK_ENA) != 0 + && (p->flags & PMCW_FLAGS_MASK_ENA) == 0) { + sch->disable_cb(sch); + } + ret = 0; out: @@ -1443,6 +1451,10 @@ void css_reset_sch(SubchDev *sch) { PMCW *p = &sch->curr_status.pmcw; + if ((p->flags & PMCW_FLAGS_MASK_ENA) != 0 && sch->disable_cb) { + sch->disable_cb(sch); + } + p->intparm = 0; p->flags &= ~(PMCW_FLAGS_MASK_ISC | PMCW_FLAGS_MASK_ENA | PMCW_FLAGS_MASK_LM | PMCW_FLAGS_MASK_MME | diff --git a/hw/s390x/css.h b/hw/s390x/css.h index 33104ac..7fa807b 100644 --- a/hw/s390x/css.h +++ b/hw/s390x/css.h @@ -81,6 +81,7 @@ struct SubchDev { uint8_t ccw_no_data_cnt; /* transport-provided data: */ int (*ccw_cb) (SubchDev *, CCW1); + void (*disable_cb)(SubchDev *); SenseId id; void *driver_data; };