From e0754aa6358c9c9dc0da86cf87afebcc8f9a5319 Mon Sep 17 00:00:00 2001 From: Xiao Wang Date: Tue, 7 Jul 2015 09:19:10 +0200 Subject: [PATCH 096/100] virtio-input: add input routing support Message-id: <1436260751-25015-68-git-send-email-jasowang@redhat.com> Patchwork-id: 66842 O-Subject: [RHEL7.2 qemu-kvm-rhev PATCH V2 67/68] virtio-input: add input routing support Bugzilla: 1227343 RH-Acked-by: Michael S. Tsirkin RH-Acked-by: David Gibson RH-Acked-by: Laurent Vivier RH-Acked-by: Thomas Huth From: Gerd Hoffmann Add display and head properties for input routing to virtio-input devices, update multiseat documentation. Signed-off-by: Gerd Hoffmann (cherry picked from commit 5cce173323cfe1bb22f7a10f9b73ac7796909cef) Signed-off-by: Miroslav Rezanina --- docs/multiseat.txt | 17 +++++++++++++++-- hw/input/virtio-input-hid.c | 11 +++++++++++ include/hw/virtio/virtio-input.h | 2 ++ 3 files changed, 28 insertions(+), 2 deletions(-) diff --git a/docs/multiseat.txt b/docs/multiseat.txt index b963665..e93d223 100644 --- a/docs/multiseat.txt +++ b/docs/multiseat.txt @@ -2,8 +2,8 @@ multiseat howto (with some multihead coverage) ============================================== -host side ---------- +host devices +------------ First you must compile qemu with a user interface supporting multihead/multiseat and input event routing. Right now this @@ -41,6 +41,19 @@ The "display=video2" sets up the input routing. Any input coming from the window which belongs to the video.2 display adapter will be routed to these input devices. +Starting with qemu 2.4 and linux kernel 4.1 you can also use virtio +for the input devices, using this ... + + -device pci-bridge,addr=12.0,chassis_nr=2,id=head.2 \ + -device secondary-vga,bus=head.2,addr=02.0,id=video.2 \ + -device virtio-keyboard-pci,bus=head.2,addr=03.0,display=video.2 \ + -device virtio-tablet-pci,bus=head.2,addr=03.0,display=video.2 + +... instead of xhci and usb hid devices. + +host ui +------- + The sdl2 ui will start up with two windows, one for each display device. The gtk ui will start with a single window and each display in a separate tab. You can either simply switch tabs to switch heads, diff --git a/hw/input/virtio-input-hid.c b/hw/input/virtio-input-hid.c index 32cc94a..616a815 100644 --- a/hw/input/virtio-input-hid.c +++ b/hw/input/virtio-input-hid.c @@ -252,7 +252,11 @@ static void virtio_input_handle_sync(DeviceState *dev) static void virtio_input_hid_realize(DeviceState *dev, Error **errp) { VirtIOInputHID *vhid = VIRTIO_INPUT_HID(dev); + vhid->hs = qemu_input_handler_register(dev, vhid->handler); + if (vhid->display && vhid->hs) { + qemu_input_handler_bind(vhid->hs, vhid->display, vhid->head, NULL); + } } static void virtio_input_hid_unrealize(DeviceState *dev, Error **errp) @@ -301,10 +305,17 @@ static void virtio_input_hid_handle_status(VirtIOInput *vinput, } } +static Property virtio_input_hid_properties[] = { + DEFINE_PROP_STRING("display", VirtIOInputHID, display), + DEFINE_PROP_UINT32("head", VirtIOInputHID, head, 0), +}; + static void virtio_input_hid_class_init(ObjectClass *klass, void *data) { + DeviceClass *dc = DEVICE_CLASS(klass); VirtIOInputClass *vic = VIRTIO_INPUT_CLASS(klass); + dc->props = virtio_input_hid_properties; vic->realize = virtio_input_hid_realize; vic->unrealize = virtio_input_hid_unrealize; vic->change_active = virtio_input_hid_change_active; diff --git a/include/hw/virtio/virtio-input.h b/include/hw/virtio/virtio-input.h index fd5417d..af1c207 100644 --- a/include/hw/virtio/virtio-input.h +++ b/include/hw/virtio/virtio-input.h @@ -95,6 +95,8 @@ struct VirtIOInputClass { struct VirtIOInputHID { VirtIOInput parent_obj; + char *display; + uint32_t head; QemuInputHandler *handler; QemuInputHandlerState *hs; int ledstate; -- 1.8.3.1