From patchwork Fri Mar 18 14:21:29 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 8620281 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 8BB449F44D for ; Fri, 18 Mar 2016 14:30:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E942620108 for ; Fri, 18 Mar 2016 14:30:19 +0000 (UTC) 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.kernel.org (Postfix) with ESMTPS id 294A820303 for ; Fri, 18 Mar 2016 14:30:19 +0000 (UTC) Received: from localhost ([::1]:43984 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agvPu-0006fo-C7 for patchwork-qemu-devel@patchwork.kernel.org; Fri, 18 Mar 2016 10:30:18 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52478) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agvHo-0000JS-E0 for qemu-devel@nongnu.org; Fri, 18 Mar 2016 10:21:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1agvHk-00073w-Hm for qemu-devel@nongnu.org; Fri, 18 Mar 2016 10:21:56 -0400 Received: from e06smtp12.uk.ibm.com ([195.75.94.108]:41015) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1agvHk-00073O-7x for qemu-devel@nongnu.org; Fri, 18 Mar 2016 10:21:52 -0400 Received: from localhost by e06smtp12.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Fri, 18 Mar 2016 14:21:42 -0000 X-IBM-Helo: d06dlp02.portsmouth.uk.ibm.com X-IBM-MailFrom: cornelia.huck@de.ibm.com X-IBM-RcptTo: qemu-devel@nongnu.org Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by d06dlp02.portsmouth.uk.ibm.com (Postfix) with ESMTP id 8B82C2190056 for ; Fri, 18 Mar 2016 14:21:23 +0000 (GMT) Received: from d06av05.portsmouth.uk.ibm.com (d06av05.portsmouth.uk.ibm.com [9.149.37.229]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u2IELfOS3277170 for ; Fri, 18 Mar 2016 14:21:41 GMT Received: from d06av05.portsmouth.uk.ibm.com (localhost [127.0.0.1]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u2IELfxb004167 for ; Fri, 18 Mar 2016 08:21:41 -0600 Received: from gondolin.boeblingen.de.ibm.com (dyn-9-152-224-197.boeblingen.de.ibm.com [9.152.224.197]) by d06av05.portsmouth.uk.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u2IELbuv003985 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 18 Mar 2016 08:21:41 -0600 From: Cornelia Huck To: qemu-devel@nongnu.org Date: Fri, 18 Mar 2016 15:21:29 +0100 Message-Id: <1458310895-29044-9-git-send-email-cornelia.huck@de.ibm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1458310895-29044-1-git-send-email-cornelia.huck@de.ibm.com> References: <1458310895-29044-1-git-send-email-cornelia.huck@de.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16031814-0009-0000-0000-000008751ECF X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 195.75.94.108 Cc: Cornelia Huck , borntraeger@de.ibm.com, jfrei@linux.vnet.ibm.com, agraf@suse.de, "Eugene \(jno\) Dvurechenski" Subject: [Qemu-devel] [PATCH for-2.6 08/14] pc-bios/s390-ccw: add simplified virtio call X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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: "Eugene (jno) Dvurechenski" Add virtio_run(VirtioCmd) call to use simple declarative approach. Signed-off-by: Eugene (jno) Dvurechenski Signed-off-by: Cornelia Huck --- pc-bios/s390-ccw/virtio.c | 17 +++++++++++++++++ pc-bios/s390-ccw/virtio.h | 9 +++++++++ 2 files changed, 26 insertions(+) diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c index 56734af..4ab4d47 100644 --- a/pc-bios/s390-ccw/virtio.c +++ b/pc-bios/s390-ccw/virtio.c @@ -225,6 +225,23 @@ static int vring_wait_reply(void) return 1; } +int virtio_run(VDev *vdev, int vqid, VirtioCmd *cmd) +{ + VRing *vr = &vdev->vrings[vqid]; + int i = 0; + + do { + vring_send_buf(vr, cmd[i].data, cmd[i].size, + cmd[i].flags | (i ? VRING_HIDDEN_IS_CHAIN : 0)); + } while (cmd[i++].flags & VRING_DESC_F_NEXT); + + vring_wait_reply(); + if (drain_irqs(vr->schid)) { + return -1; + } + return 0; +} + /*********************************************** * Virtio block * ***********************************************/ diff --git a/pc-bios/s390-ccw/virtio.h b/pc-bios/s390-ccw/virtio.h index 7b227db..57c71a2 100644 --- a/pc-bios/s390-ccw/virtio.h +++ b/pc-bios/s390-ccw/virtio.h @@ -248,4 +248,13 @@ typedef struct VDev VDev; VDev *virtio_get_device(void); VirtioDevType virtio_get_device_type(void); +struct VirtioCmd { + void *data; + int size; + int flags; +}; +typedef struct VirtioCmd VirtioCmd; + +int virtio_run(VDev *vdev, int vqid, VirtioCmd *cmd); + #endif /* VIRTIO_H */