diff --git a/MAINTAINERS b/MAINTAINERS index 2e40390ebcdbd8a8443136de07a6af4c12161c40..6d4a10b3903fa864098e3c8905f73dd7a4604693 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1521,6 +1521,7 @@ L: qemu-s390x@nongnu.org virtio-input M: Gerd Hoffmann S: Maintained +F: hw/input/vhost-user-input.c F: hw/input/virtio-input*.c F: include/hw/virtio/virtio-input.h diff --git a/hw/input/Kconfig b/hw/input/Kconfig index e2e66f08586240ad67fdb79e6b01b31165f4974c..50e55e353847a9b0a871355416e2bb2a23c1078d 100644 --- a/hw/input/Kconfig +++ b/hw/input/Kconfig @@ -29,5 +29,10 @@ config VIRTIO_INPUT_HOST default y depends on VIRTIO && LINUX +config VHOST_USER_INPUT + bool + default y + depends on VIRTIO_INPUT && VHOST_USER + config TSC210X bool diff --git a/hw/input/Makefile.objs b/hw/input/Makefile.objs index c8b00f71ec50914aaa811aa26ffb6e0182fa3880..3eddf00f2bba7b2380f91c99de46c0be772f2351 100644 --- a/hw/input/Makefile.objs +++ b/hw/input/Makefile.objs @@ -12,6 +12,7 @@ common-obj-$(CONFIG_VIRTIO_INPUT) += virtio-input-hid.o ifeq ($(CONFIG_LINUX),y) common-obj-$(CONFIG_VIRTIO_INPUT) += virtio-input-host.o endif +common-obj-$(CONFIG_VHOST_USER_INPUT) += vhost-user-input.o obj-$(CONFIG_MILKYMIST) += milkymist-softusb.o obj-$(CONFIG_PXA2XX) += pxa2xx_keypad.o diff --git a/hw/input/vhost-user-input.c b/hw/input/vhost-user-input.c new file mode 100644 index 0000000000000000000000000000000000000000..6da497b1a8a94ef4a531470943d1049e9cbe6927 --- /dev/null +++ b/hw/input/vhost-user-input.c @@ -0,0 +1,129 @@ +/* + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. See the COPYING file in the + * top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu/error-report.h" +#include "qapi/error.h" +#include "qemu-common.h" + +#include "hw/qdev.h" +#include "hw/virtio/virtio-input.h" + +static int vhost_input_config_change(struct vhost_dev *dev) +{ + error_report("vhost-user-input: unhandled backend config change"); + return -1; +} + +static const VhostDevConfigOps config_ops = { + .vhost_dev_config_notifier = vhost_input_config_change, +}; + +static void vhost_input_realize(DeviceState *dev, Error **errp) +{ + VHostUserInput *vhi = VHOST_USER_INPUT(dev); + VirtIOInput *vinput = VIRTIO_INPUT(dev); + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + + vhost_dev_set_config_notifier(&vhi->vhost->dev, &config_ops); + vinput->cfg_size = sizeof_field(virtio_input_config, u); + if (vhost_user_backend_dev_init(vhi->vhost, vdev, 2, errp) == -1) { + return; + } +} + +static void vhost_input_change_active(VirtIOInput *vinput) +{ + VHostUserInput *vhi = VHOST_USER_INPUT(vinput); + + if (vinput->active) { + vhost_user_backend_start(vhi->vhost); + } else { + vhost_user_backend_stop(vhi->vhost); + } +} + +static void vhost_input_get_config(VirtIODevice *vdev, uint8_t *config_data) +{ + VirtIOInput *vinput = VIRTIO_INPUT(vdev); + VHostUserInput *vhi = VHOST_USER_INPUT(vdev); + int ret; + + memset(config_data, 0, vinput->cfg_size); + + ret = vhost_dev_get_config(&vhi->vhost->dev, config_data, vinput->cfg_size); + if (ret) { + error_report("vhost-user-input: get device config space failed"); + return; + } +} + +static void vhost_input_set_config(VirtIODevice *vdev, + const uint8_t *config_data) +{ + VHostUserInput *vhi = VHOST_USER_INPUT(vdev); + int ret; + + ret = vhost_dev_set_config(&vhi->vhost->dev, config_data, + 0, sizeof(virtio_input_config), + VHOST_SET_CONFIG_TYPE_MASTER); + if (ret) { + error_report("vhost-user-input: set device config space failed"); + return; + } + + virtio_notify_config(vdev); +} + +static const VMStateDescription vmstate_vhost_input = { + .name = "vhost-user-input", + .unmigratable = 1, +}; + +static void vhost_input_class_init(ObjectClass *klass, void *data) +{ + VirtIOInputClass *vic = VIRTIO_INPUT_CLASS(klass); + VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->vmsd = &vmstate_vhost_input; + vdc->get_config = vhost_input_get_config; + vdc->set_config = vhost_input_set_config; + vic->realize = vhost_input_realize; + vic->change_active = vhost_input_change_active; +} + +static void vhost_input_init(Object *obj) +{ + VHostUserInput *vhi = VHOST_USER_INPUT(obj); + + vhi->vhost = VHOST_USER_BACKEND(object_new(TYPE_VHOST_USER_BACKEND)); + object_property_add_alias(obj, "chardev", + OBJECT(vhi->vhost), "chardev", &error_abort); +} + +static void vhost_input_finalize(Object *obj) +{ + VHostUserInput *vhi = VHOST_USER_INPUT(obj); + + object_unref(OBJECT(vhi->vhost)); +} + +static const TypeInfo vhost_input_info = { + .name = TYPE_VHOST_USER_INPUT, + .parent = TYPE_VIRTIO_INPUT, + .instance_size = sizeof(VHostUserInput), + .instance_init = vhost_input_init, + .instance_finalize = vhost_input_finalize, + .class_init = vhost_input_class_init, +}; + +static void vhost_input_register_types(void) +{ + type_register_static(&vhost_input_info); +} + +type_init(vhost_input_register_types) diff --git a/hw/virtio/Makefile.objs b/hw/virtio/Makefile.objs index f2ab667a2118e0a732567ad811b1b3860782c914..5570ea8df8057b409c43e9e531486c83d29a4b58 100644 --- a/hw/virtio/Makefile.objs +++ b/hw/virtio/Makefile.objs @@ -17,6 +17,7 @@ obj-$(CONFIG_VHOST_VSOCK) += vhost-vsock.o ifeq ($(CONFIG_VIRTIO_PCI),y) obj-$(CONFIG_VHOST_VSOCK) += vhost-vsock-pci.o obj-$(CONFIG_VHOST_USER_BLK) += vhost-user-blk-pci.o +obj-$(CONFIG_VHOST_USER_INPUT) += vhost-user-input-pci.o obj-$(CONFIG_VHOST_USER_SCSI) += vhost-user-scsi-pci.o obj-$(CONFIG_VHOST_SCSI) += vhost-scsi-pci.o obj-$(CONFIG_VIRTIO_INPUT_HOST) += virtio-input-host-pci.o diff --git a/hw/virtio/vhost-user-input-pci.c b/hw/virtio/vhost-user-input-pci.c new file mode 100644 index 0000000000000000000000000000000000000000..ae9cff9aed5e10b8b1fe5d238fefc64065de9bca --- /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) diff --git a/include/hw/virtio/virtio-input.h b/include/hw/virtio/virtio-input.h index 054c38836f11935abca3f822fa2c766240546b15..4fca03e7969ee1e78588a8c53605cc80f9f0ba13 100644 --- a/include/hw/virtio/virtio-input.h +++ b/include/hw/virtio/virtio-input.h @@ -2,6 +2,7 @@ #define QEMU_VIRTIO_INPUT_H #include "ui/input.h" +#include "sysemu/vhost-user-backend.h" /* ----------------------------------------------------------------- */ /* virtio input protocol */ @@ -42,11 +43,18 @@ typedef struct virtio_input_event virtio_input_event; #define VIRTIO_INPUT_HOST_GET_PARENT_CLASS(obj) \ OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HOST) +#define TYPE_VHOST_USER_INPUT "vhost-user-input" +#define VHOST_USER_INPUT(obj) \ + OBJECT_CHECK(VHostUserInput, (obj), TYPE_VHOST_USER_INPUT) +#define VHOST_USER_INPUT_GET_PARENT_CLASS(obj) \ + OBJECT_GET_PARENT_CLASS(obj, TYPE_VHOST_USER_INPUT) + typedef struct VirtIOInput VirtIOInput; typedef struct VirtIOInputClass VirtIOInputClass; typedef struct VirtIOInputConfig VirtIOInputConfig; typedef struct VirtIOInputHID VirtIOInputHID; typedef struct VirtIOInputHost VirtIOInputHost; +typedef struct VHostUserInput VHostUserInput; struct VirtIOInputConfig { virtio_input_config config; @@ -98,6 +106,12 @@ struct VirtIOInputHost { int fd; }; +struct VHostUserInput { + VirtIOInput parent_obj; + + VhostUserBackend *vhost; +}; + void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event); void virtio_input_init_config(VirtIOInput *vinput, virtio_input_config *config);