From 9c4d05b741660958cf8769fa7ae73617fe4c67bd Mon Sep 17 00:00:00 2001 From: Marc-André Lureau Date: Fri, 3 May 2019 15:00:32 +0200 Subject: Add vhost-user-input-pci MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a new virtio-input device, which connects to a vhost-user backend. Instead of reading configuration directly from an input device / evdev (like virtio-input-host), it reads it over vhost-user protocol with {SET,GET}_CONFIG messages. The vhost-user-backend handles the queues & events setup. Signed-off-by: Marc-André Lureau Message-id: 20190503130034.24916-5-marcandre.lureau@redhat.com [ kraxel: drop -{non-,}transitional variants ] [ kraxel: fix "make check" on !linux ] Signed-off-by: Gerd Hoffmann --- hw/virtio/vhost-user-input-pci.c | 50 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 hw/virtio/vhost-user-input-pci.c (limited to 'hw/virtio/vhost-user-input-pci.c') diff --git a/hw/virtio/vhost-user-input-pci.c b/hw/virtio/vhost-user-input-pci.c new file mode 100644 index 0000000000..ae9cff9aed --- /dev/null +++ b/hw/virtio/vhost-user-input-pci.c @@ -0,0 +1,50 @@ +/* + * This work is licensed under the terms of the GNU LGPL, version 2 or + * later. See the COPYING.LIB file in the top-level directory. + */ + +#include "qemu/osdep.h" + +#include "hw/virtio/virtio.h" +#include "hw/virtio/virtio-input.h" +#include "qapi/error.h" +#include "qemu/error-report.h" +#include "virtio-pci.h" + +typedef struct VHostUserInputPCI VHostUserInputPCI; + +#define TYPE_VHOST_USER_INPUT_PCI "vhost-user-input-pci" + +#define VHOST_USER_INPUT_PCI(obj) \ + OBJECT_CHECK(VHostUserInputPCI, (obj), TYPE_VHOST_USER_INPUT_PCI) + +struct VHostUserInputPCI { + VirtIOPCIProxy parent_obj; + VHostUserInput vhi; +}; + +static void vhost_user_input_pci_instance_init(Object *obj) +{ + VHostUserInputPCI *dev = VHOST_USER_INPUT_PCI(obj); + + virtio_instance_init_common(obj, &dev->vhi, sizeof(dev->vhi), + TYPE_VHOST_USER_INPUT); + + object_property_add_alias(obj, "chardev", + OBJECT(&dev->vhi), "chardev", + &error_abort); +} + +static const VirtioPCIDeviceTypeInfo vhost_user_input_pci_info = { + .generic_name = TYPE_VHOST_USER_INPUT_PCI, + .parent = TYPE_VIRTIO_INPUT_PCI, + .instance_size = sizeof(VHostUserInputPCI), + .instance_init = vhost_user_input_pci_instance_init, +}; + +static void vhost_user_input_pci_register(void) +{ + virtio_pci_types_register(&vhost_user_input_pci_info); +} + +type_init(vhost_user_input_pci_register) -- cgit 1.4.1