From patchwork Mon Mar 7 03:22:55 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cao jin X-Patchwork-Id: 8515061 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 43D0BC0553 for ; Mon, 7 Mar 2016 03:27:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 9259E2013A for ; Mon, 7 Mar 2016 03:27:27 +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 CEEED20138 for ; Mon, 7 Mar 2016 03:27:26 +0000 (UTC) Received: from localhost ([::1]:53295 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aclpO-0000Io-6U for patchwork-qemu-devel@patchwork.kernel.org; Sun, 06 Mar 2016 22:27:26 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51083) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aclkO-00007D-Kj for qemu-devel@nongnu.org; Sun, 06 Mar 2016 22:22:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aclkN-0001O4-M6 for qemu-devel@nongnu.org; Sun, 06 Mar 2016 22:22:16 -0500 Received: from [59.151.112.132] (port=53491 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aclkM-0001Bz-E1 for qemu-devel@nongnu.org; Sun, 06 Mar 2016 22:22:15 -0500 X-IronPort-AV: E=Sophos;i="5.22,518,1449504000"; d="scan'208";a="4286088" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 07 Mar 2016 11:21:52 +0800 Received: from G08CNEXCHPEKD01.g08.fujitsu.local (unknown [10.167.33.80]) by cn.fujitsu.com (Postfix) with ESMTP id A379542B4AF4; Mon, 7 Mar 2016 11:21:47 +0800 (CST) Received: from G08FNSTD140223.g08.fujitsu.local (10.167.226.69) by G08CNEXCHPEKD01.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.181.6; Mon, 7 Mar 2016 11:21:47 +0800 From: Cao jin To: Date: Mon, 7 Mar 2016 11:22:55 +0800 Message-ID: <1457320984-6540-3-git-send-email-caoj.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1457320984-6540-1-git-send-email-caoj.fnst@cn.fujitsu.com> References: <1457320984-6540-1-git-send-email-caoj.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.69] X-yoursite-MailScanner-ID: A379542B4AF4.AA9D3 X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: caoj.fnst@cn.fujitsu.com X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 59.151.112.132 Cc: chen.fan.fnst@cn.fujitsu.com, izumi.taku@jp.fujitsu.com, alex.williamson@redhat.com, mst@redhat.com Subject: [Qemu-devel] [PATCH v2 02/11] vfio: squeeze out vfio_pci_do_hot_reset for support bus reset 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: Chen Fan squeeze out vfio_pci_do_hot_reset to do host bus reset when AER recovery. Signed-off-by: Chen Fan --- hw/vfio/pci.c | 75 +++++++++++++++++++++++++++++++++++------------------------ 1 file changed, 44 insertions(+), 31 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 9ddaa99..b03c394 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -1736,6 +1736,48 @@ error: return ret; } +static int vfio_pci_do_hot_reset(VFIOPCIDevice *vdev, + struct vfio_pci_hot_reset_info *info) +{ + VFIOGroup *group; + struct vfio_pci_hot_reset *reset; + int32_t *fds; + int ret, i, count; + struct vfio_pci_dependent_device *devices; + + /* Determine how many group fds need to be passed */ + count = 0; + devices = &info->devices[0]; + QLIST_FOREACH(group, &vfio_group_list, next) { + for (i = 0; i < info->count; i++) { + if (group->groupid == devices[i].group_id) { + count++; + break; + } + } + } + + reset = g_malloc0(sizeof(*reset) + (count * sizeof(*fds))); + reset->argsz = sizeof(*reset) + (count * sizeof(*fds)); + fds = &reset->group_fds[0]; + + /* Fill in group fds */ + QLIST_FOREACH(group, &vfio_group_list, next) { + for (i = 0; i < info->count; i++) { + if (group->groupid == devices[i].group_id) { + fds[reset->count++] = group->fd; + break; + } + } + } + + /* Bus reset! */ + ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_PCI_HOT_RESET, reset); + g_free(reset); + + return ret; +} + static int vfio_add_std_cap(VFIOPCIDevice *vdev, uint8_t pos) { PCIDevice *pdev = &vdev->pdev; @@ -1877,9 +1919,7 @@ static int vfio_pci_hot_reset(VFIOPCIDevice *vdev, bool single) VFIOGroup *group; struct vfio_pci_hot_reset_info *info = NULL; struct vfio_pci_dependent_device *devices; - struct vfio_pci_hot_reset *reset; - int32_t *fds; - int ret, i, count; + int ret, i; bool multi = false; trace_vfio_pci_hot_reset(vdev->vbasedev.name, single ? "one" : "multi"); @@ -1958,34 +1998,7 @@ static int vfio_pci_hot_reset(VFIOPCIDevice *vdev, bool single) goto out_single; } - /* Determine how many group fds need to be passed */ - count = 0; - QLIST_FOREACH(group, &vfio_group_list, next) { - for (i = 0; i < info->count; i++) { - if (group->groupid == devices[i].group_id) { - count++; - break; - } - } - } - - reset = g_malloc0(sizeof(*reset) + (count * sizeof(*fds))); - reset->argsz = sizeof(*reset) + (count * sizeof(*fds)); - fds = &reset->group_fds[0]; - - /* Fill in group fds */ - QLIST_FOREACH(group, &vfio_group_list, next) { - for (i = 0; i < info->count; i++) { - if (group->groupid == devices[i].group_id) { - fds[reset->count++] = group->fd; - break; - } - } - } - - /* Bus reset! */ - ret = ioctl(vdev->vbasedev.fd, VFIO_DEVICE_PCI_HOT_RESET, reset); - g_free(reset); + ret = vfio_pci_do_hot_reset(vdev, info); trace_vfio_pci_hot_reset_result(vdev->vbasedev.name, ret ? "%m" : "Success");