From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52222) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z4lzO-0004Ar-VZ for qemu-devel@nongnu.org; Tue, 16 Jun 2015 04:13:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z4lzM-0004bB-ND for qemu-devel@nongnu.org; Tue, 16 Jun 2015 04:12:58 -0400 Received: from [59.151.112.132] (port=41971 helo=heian.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z4lzM-0004Xn-Br for qemu-devel@nongnu.org; Tue, 16 Jun 2015 04:12:56 -0400 From: Chen Fan Date: Tue, 16 Jun 2015 16:10:46 +0800 Message-ID: <59ced5c0d0a0508ac0d88d90b7177262a9da0da2.1434356309.git.chen.fan.fnst@cn.fujitsu.com> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain Subject: [Qemu-devel] [RFC v10 02/19] vfio: squeeze out vfio_pci_do_hot_reset for support bus reset List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: izumi.taku@jp.fujitsu.com, alex.williamson@redhat.com 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 4a97ccc..e056c49 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -2686,6 +2686,48 @@ 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; @@ -2827,9 +2869,7 @@ 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"); @@ -2908,34 +2948,7 @@ 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"); -- 1.9.3