From patchwork Thu Jun 6 20:28:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Farman X-Patchwork-Id: 10980455 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 F0A001515 for ; Thu, 6 Jun 2019 20:28:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DCF3E205A4 for ; Thu, 6 Jun 2019 20:28:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D187F27EE2; Thu, 6 Jun 2019 20:28:43 +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 7EFE9205A4 for ; Thu, 6 Jun 2019 20:28:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727063AbfFFU2m (ORCPT ); Thu, 6 Jun 2019 16:28:42 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:36788 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726962AbfFFU2k (ORCPT ); Thu, 6 Jun 2019 16:28:40 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x56KRZ9e083453 for ; Thu, 6 Jun 2019 16:28:39 -0400 Received: from e06smtp03.uk.ibm.com (e06smtp03.uk.ibm.com [195.75.94.99]) by mx0a-001b2d01.pphosted.com with ESMTP id 2sy71hg955-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 06 Jun 2019 16:28:39 -0400 Received: from localhost by e06smtp03.uk.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) Thu, 6 Jun 2019 21:28:35 +0100 Received: from d06av24.portsmouth.uk.ibm.com (mk.ibm.com [9.149.105.60]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x56KSYcg33947660 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 6 Jun 2019 20:28:34 GMT Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E2D0642041; Thu, 6 Jun 2019 20:28:33 +0000 (GMT) Received: from d06av24.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CEE044203F; Thu, 6 Jun 2019 20:28:33 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av24.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Thu, 6 Jun 2019 20:28:33 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 4958) id 570D9E02AA; Thu, 6 Jun 2019 22:28:33 +0200 (CEST) From: Eric Farman To: Cornelia Huck , Farhan Ali Cc: Halil Pasic , linux-s390@vger.kernel.org, kvm@vger.kernel.org, Eric Farman Subject: [PATCH v2 3/9] s390/cio: Generalize the TIC handler Date: Thu, 6 Jun 2019 22:28:25 +0200 X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190606202831.44135-1-farman@linux.ibm.com> References: <20190606202831.44135-1-farman@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19060620-0012-0000-0000-00000325ECA5 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19060620-0013-0000-0000-0000215ED5C5 Message-Id: <20190606202831.44135-4-farman@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-06-06_14:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=985 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906060138 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Refactor ccwchain_handle_tic() into a routine that handles a channel program address (which itself is a CCW pointer), rather than a CCW pointer that is only a TIC CCW. This will make it easier to reuse this code for other CCW commands. Signed-off-by: Eric Farman Reviewed-by: Cornelia Huck --- drivers/s390/cio/vfio_ccw_cp.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c index 628daf1a8f9a..52735cdb0270 100644 --- a/drivers/s390/cio/vfio_ccw_cp.c +++ b/drivers/s390/cio/vfio_ccw_cp.c @@ -497,13 +497,13 @@ static int tic_target_chain_exists(struct ccw1 *tic, struct channel_program *cp) static int ccwchain_loop_tic(struct ccwchain *chain, struct channel_program *cp); -static int ccwchain_handle_tic(struct ccw1 *tic, struct channel_program *cp) +static int ccwchain_handle_ccw(u32 cda, struct channel_program *cp) { struct ccwchain *chain; int len, ret; /* Get chain length. */ - len = ccwchain_calc_length(tic->cda, cp); + len = ccwchain_calc_length(cda, cp); if (len < 0) return len; @@ -511,10 +511,10 @@ static int ccwchain_handle_tic(struct ccw1 *tic, struct channel_program *cp) chain = ccwchain_alloc(cp, len); if (!chain) return -ENOMEM; - chain->ch_iova = tic->cda; + chain->ch_iova = cda; /* Copy the new chain from user. */ - ret = copy_ccw_from_iova(cp, chain->ch_ccw, tic->cda, len); + ret = copy_ccw_from_iova(cp, chain->ch_ccw, cda, len); if (ret) { ccwchain_free(chain); return ret; @@ -540,7 +540,8 @@ static int ccwchain_loop_tic(struct ccwchain *chain, struct channel_program *cp) if (tic_target_chain_exists(tic, cp)) continue; - ret = ccwchain_handle_tic(tic, cp); + /* Build a ccwchain for the next segment */ + ret = ccwchain_handle_ccw(tic->cda, cp); if (ret) return ret; }