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* [Qemu-devel] [PATCH 0/4] input: add virtio input devices
@ 2014-06-03  8:42 Gerd Hoffmann
  2014-06-03  8:42 ` [Qemu-devel] [PATCH 1/4] pci: add virtio input pci device id Gerd Hoffmann
                   ` (3 more replies)
  0 siblings, 4 replies; 5+ messages in thread
From: Gerd Hoffmann @ 2014-06-03  8:42 UTC (permalink / raw)
  To: qemu-devel; +Cc: Gerd Hoffmann

  Hi,

This series adds virtio input support to qemu.  virtio
input basically sends linux evdev events over virtio.

Patch #1 is just the pci id.  Patch #2 adds the core code
as abstract qom class.  Patch #3 adds emulated devices on
top of that, and patch #4 adds evdev passthrough.

The corresponding linux kernel driver is here:
https://www.kraxel.org/cgit/linux/log/?h=virtio-input

cheers,
  Gerd

Gerd Hoffmann (4):
  pci: add virtio input pci device id
  virtio-input: core code & base class
  virtio-input: emulated devices
  virtio-input: evdev passthrough

 docs/specs/pci-ids.txt           |   1 +
 hw/input/Makefile.objs           |   6 +
 hw/input/virtio-input-hid.c      | 484 +++++++++++++++++++++++++++++++++++++++
 hw/input/virtio-input-host.c     | 172 ++++++++++++++
 hw/input/virtio-input.c          | 284 +++++++++++++++++++++++
 hw/virtio/virtio-pci.c           | 135 +++++++++++
 hw/virtio/virtio-pci.h           |  37 +++
 include/hw/pci/pci.h             |   1 +
 include/hw/virtio/virtio-input.h | 140 +++++++++++
 include/hw/virtio/virtio.h       |   1 +
 10 files changed, 1261 insertions(+)
 create mode 100644 hw/input/virtio-input-hid.c
 create mode 100644 hw/input/virtio-input-host.c
 create mode 100644 hw/input/virtio-input.c
 create mode 100644 include/hw/virtio/virtio-input.h

-- 
1.8.3.1

^ permalink raw reply	[flat|nested] 5+ messages in thread

* [Qemu-devel] [PATCH 1/4] pci: add virtio input pci device id
  2014-06-03  8:42 [Qemu-devel] [PATCH 0/4] input: add virtio input devices Gerd Hoffmann
@ 2014-06-03  8:42 ` Gerd Hoffmann
  2014-06-03  8:42 ` [Qemu-devel] [PATCH 2/4] virtio-input: core code & base class Gerd Hoffmann
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 5+ messages in thread
From: Gerd Hoffmann @ 2014-06-03  8:42 UTC (permalink / raw)
  To: qemu-devel; +Cc: Gerd Hoffmann, Michael S. Tsirkin

Using 0x1012 because virtio id is 18 (0x12).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 docs/specs/pci-ids.txt | 1 +
 include/hw/pci/pci.h   | 1 +
 2 files changed, 2 insertions(+)

diff --git a/docs/specs/pci-ids.txt b/docs/specs/pci-ids.txt
index 3c65e1a..3b0a448 100644
--- a/docs/specs/pci-ids.txt
+++ b/docs/specs/pci-ids.txt
@@ -22,6 +22,7 @@ maintained as part of the virtio specification.
 1af4:1004  SCSI host bus adapter device
 1af4:1005  entropy generator device
 1af4:1009  9p filesystem device
+1af4:1012  input device
 
 1af4:10f0  Available for experimental usage without registration.  Must get
    to      official ID when the code leaves the test lab (i.e. when seeking
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index 8c25ae5..ef75f94 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -81,6 +81,7 @@
 #define PCI_DEVICE_ID_VIRTIO_SCSI        0x1004
 #define PCI_DEVICE_ID_VIRTIO_RNG         0x1005
 #define PCI_DEVICE_ID_VIRTIO_9P          0x1009
+#define PCI_DEVICE_ID_VIRTIO_INPUT       0x1012
 
 #define PCI_VENDOR_ID_REDHAT             0x1b36
 #define PCI_DEVICE_ID_REDHAT_BRIDGE      0x0001
-- 
1.8.3.1

^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [Qemu-devel] [PATCH 2/4] virtio-input: core code & base class
  2014-06-03  8:42 [Qemu-devel] [PATCH 0/4] input: add virtio input devices Gerd Hoffmann
  2014-06-03  8:42 ` [Qemu-devel] [PATCH 1/4] pci: add virtio input pci device id Gerd Hoffmann
@ 2014-06-03  8:42 ` Gerd Hoffmann
  2014-06-03  8:42 ` [Qemu-devel] [PATCH 3/4] virtio-input: emulated devices Gerd Hoffmann
  2014-06-03  8:42 ` [Qemu-devel] [PATCH 4/4] virtio-input: evdev passthrough Gerd Hoffmann
  3 siblings, 0 replies; 5+ messages in thread
From: Gerd Hoffmann @ 2014-06-03  8:42 UTC (permalink / raw)
  To: qemu-devel; +Cc: Gerd Hoffmann, Anthony Liguori, Michael S. Tsirkin

This patch adds virtio-input support to qemu.  It brings a abstract
base class providing core support, other classes can build on it to
actually implement input devices.

virtio-input basically sends linux input layer events (evdev) over
virtio.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/input/Makefile.objs           |   4 +
 hw/input/virtio-input.c          | 284 +++++++++++++++++++++++++++++++++++++++
 hw/virtio/virtio-pci.c           |  36 +++++
 hw/virtio/virtio-pci.h           |  14 ++
 include/hw/virtio/virtio-input.h | 106 +++++++++++++++
 include/hw/virtio/virtio.h       |   1 +
 6 files changed, 445 insertions(+)
 create mode 100644 hw/input/virtio-input.c
 create mode 100644 include/hw/virtio/virtio-input.h

diff --git a/hw/input/Makefile.objs b/hw/input/Makefile.objs
index e8c80b9..ee8bba9 100644
--- a/hw/input/Makefile.objs
+++ b/hw/input/Makefile.objs
@@ -8,6 +8,10 @@ common-obj-$(CONFIG_STELLARIS_INPUT) += stellaris_input.o
 common-obj-$(CONFIG_TSC2005) += tsc2005.o
 common-obj-$(CONFIG_VMMOUSE) += vmmouse.o
 
+ifeq ($(CONFIG_LINUX),y)
+common-obj-$(CONFIG_VIRTIO) += virtio-input.o
+endif
+
 obj-$(CONFIG_MILKYMIST) += milkymist-softusb.o
 obj-$(CONFIG_PXA2XX) += pxa2xx_keypad.o
 obj-$(CONFIG_TSC210X) += tsc210x.o
diff --git a/hw/input/virtio-input.c b/hw/input/virtio-input.c
new file mode 100644
index 0000000..9571de5
--- /dev/null
+++ b/hw/input/virtio-input.c
@@ -0,0 +1,284 @@
+/*
+ * 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/iov.h"
+
+#include "hw/qdev.h"
+#include "hw/virtio/virtio.h"
+#include "hw/virtio/virtio-input.h"
+
+#include "ui/console.h"
+
+#include <linux/input.h>
+
+/* ----------------------------------------------------------------- */
+
+void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event)
+{
+    VirtQueueElement elem;
+    unsigned have, need;
+    int i, len;
+
+    /* queue up events ... */
+    if (vinput->qindex == vinput->qsize) {
+        vinput->qsize++;
+        vinput->queue = realloc(vinput->queue, vinput->qsize *
+                                sizeof(virtio_input_event));
+    }
+    vinput->queue[vinput->qindex++] = *event;
+
+    /* ... until we see a report sync ... */
+    if (event->type != cpu_to_le16(EV_SYN) ||
+        event->code != cpu_to_le16(SYN_REPORT)) {
+        return;
+    }
+
+    /* ... then check available space ... */
+    need = sizeof(virtio_input_event) * vinput->qindex;
+    virtqueue_get_avail_bytes(vinput->evt, &have, NULL, need, 0);
+    if (have < need) {
+        vinput->qindex = 0;
+        fprintf(stderr, "%s: ENOSPC in vq, dropping events\n", __func__);
+        return;
+    }
+
+    /* ... and finally pass them to the guest */
+    for (i = 0; i < vinput->qindex; i++) {
+        if (!virtqueue_pop(vinput->evt, &elem)) {
+            /* should not happen, we've checked for space beforehand */
+            fprintf(stderr, "%s: Huh?  No vq elem available ...\n", __func__);
+            return;
+        }
+        len = iov_from_buf(elem.in_sg, elem.in_num,
+                           0, vinput->queue+i, sizeof(virtio_input_event));
+        virtqueue_push(vinput->evt, &elem, len);
+    }
+    virtio_notify(VIRTIO_DEVICE(vinput), vinput->evt);
+    vinput->qindex = 0;
+}
+
+static void virtio_input_handle_evt(VirtIODevice *vdev, VirtQueue *vq)
+{
+    /* nothing */
+}
+
+static void virtio_input_handle_sts(VirtIODevice *vdev, VirtQueue *vq)
+{
+    VirtIOInputClass *vic = VIRTIO_INPUT_GET_CLASS(vdev);
+    VirtIOInput *vinput = VIRTIO_INPUT(vdev);
+    virtio_input_event event;
+    VirtQueueElement elem;
+    int len;
+
+    while (virtqueue_pop(vinput->sts, &elem)) {
+        memset(&event, 0, sizeof(event));
+        len = iov_to_buf(elem.out_sg, elem.out_num,
+                         0, &event, sizeof(event));
+        if (vic->handle_status) {
+            vic->handle_status(vinput, &event);
+        }
+        virtqueue_push(vinput->sts, &elem, len);
+    }
+    virtio_notify(vdev, vinput->sts);
+}
+
+static virtio_input_config *virtio_input_find_config(VirtIOInput *vinput,
+                                                     uint8_t select,
+                                                     uint8_t subsel)
+{
+    VirtIOInputConfig *cfg;
+
+    QTAILQ_FOREACH(cfg, &vinput->cfg_list, node) {
+        if (select == cfg->config.select &&
+            subsel == cfg->config.subsel) {
+            return &cfg->config;
+        }
+    }
+    return NULL;
+}
+
+void virtio_input_add_config(VirtIOInput *vinput,
+                             virtio_input_config *config)
+{
+    VirtIOInputConfig *cfg;
+
+    if (virtio_input_find_config(vinput, config->select, config->subsel)) {
+        /* should not happen */
+        fprintf(stderr, "%s: duplicate config: %d/%d\n",
+                __func__, config->select, config->subsel);
+        abort();
+    }
+
+    cfg = g_new0(VirtIOInputConfig, 1);
+    cfg->config = *config;
+    QTAILQ_INSERT_TAIL(&vinput->cfg_list, cfg, node);
+}
+
+void virtio_input_init_config(VirtIOInput *vinput,
+                              virtio_input_config *config)
+{
+    int i = 0;
+
+    QTAILQ_INIT(&vinput->cfg_list);
+    while (config[i].select) {
+        virtio_input_add_config(vinput, config + i);
+        i++;
+    }
+}
+
+void virtio_input_idstr_config(VirtIOInput *vinput,
+                               uint8_t select, const char *string)
+{
+    virtio_input_config id;
+
+    if (!string) {
+        return;
+    }
+    memset(&id, 0, sizeof(id));
+    id.select = select;
+    id.size = snprintf(id.u.string, sizeof(id.u.string), "%s", string);
+    virtio_input_add_config(vinput, &id);
+}
+
+static void virtio_input_get_config(VirtIODevice *vdev, uint8_t *config_data)
+{
+    VirtIOInput *vinput = VIRTIO_INPUT(vdev);
+    virtio_input_config *config;
+
+    config = virtio_input_find_config(vinput, vinput->cfg_select,
+                                      vinput->cfg_subsel);
+    if (config) {
+        memcpy(config_data, config, vinput->cfg_size);
+    } else {
+        memset(config_data, 0, vinput->cfg_size);
+    }
+}
+
+static void virtio_input_set_config(VirtIODevice *vdev,
+                                    const uint8_t *config_data)
+{
+    VirtIOInput *vinput = VIRTIO_INPUT(vdev);
+    virtio_input_config *config = (virtio_input_config *)config_data;
+
+    vinput->cfg_select = config->select;
+    vinput->cfg_subsel = config->subsel;
+    virtio_notify_config(vdev);
+}
+
+static uint32_t virtio_input_get_features(VirtIODevice *vdev, uint32_t f)
+{
+    return f;
+}
+
+static void virtio_input_set_status(VirtIODevice *vdev, uint8_t val)
+{
+    VirtIOInputClass *vic = VIRTIO_INPUT_GET_CLASS(vdev);
+    VirtIOInput *vinput = VIRTIO_INPUT(vdev);
+
+    if (val & VIRTIO_CONFIG_S_DRIVER_OK) {
+        if (!vinput->active) {
+            vinput->active = true;
+            if (vic->change_active) {
+                vic->change_active(vinput);
+            }
+        }
+    }
+}
+
+static void virtio_input_reset(VirtIODevice *vdev)
+{
+    VirtIOInputClass *vic = VIRTIO_INPUT_GET_CLASS(vdev);
+    VirtIOInput *vinput = VIRTIO_INPUT(vdev);
+
+    if (vinput->active) {
+        vinput->active = false;
+        if (vic->change_active) {
+            vic->change_active(vinput);
+        }
+    }
+}
+
+static void virtio_input_device_realize(DeviceState *dev, Error **errp)
+{
+    VirtIOInputClass *vic = VIRTIO_INPUT_GET_CLASS(dev);
+    VirtIODevice *vdev = VIRTIO_DEVICE(dev);
+    VirtIOInput *vinput = VIRTIO_INPUT(dev);
+    VirtIOInputConfig *cfg;
+    Error *local_err = NULL;
+
+    if (vic->realize) {
+        vic->realize(dev, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+            return;
+        }
+    }
+
+    virtio_input_idstr_config(vinput, VIRTIO_INPUT_CFG_ID_SERIAL,
+                              vinput->input.serial);
+
+    QTAILQ_FOREACH(cfg, &vinput->cfg_list, node) {
+        if (vinput->cfg_size < cfg->config.size) {
+            vinput->cfg_size = cfg->config.size;
+        }
+    }
+    vinput->cfg_size += 4;
+    assert(vinput->cfg_size <= sizeof(virtio_input_config));
+
+    virtio_init(vdev, "virtio-input", VIRTIO_ID_INPUT,
+                vinput->cfg_size);
+    vinput->evt = virtio_add_queue(vdev, 64, virtio_input_handle_evt);
+    vinput->sts = virtio_add_queue(vdev, 64, virtio_input_handle_sts);
+}
+
+static void virtio_input_device_unrealize(DeviceState *dev, Error **errp)
+{
+    VirtIOInputClass *vic = VIRTIO_INPUT_GET_CLASS(dev);
+    VirtIODevice *vdev = VIRTIO_DEVICE(dev);
+    Error *local_err = NULL;
+
+    if (vic->unrealize) {
+        vic->unrealize(dev, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+            return;
+        }
+    }
+    virtio_cleanup(vdev);
+}
+
+static void virtio_input_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
+
+    set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
+    vdc->realize      = virtio_input_device_realize;
+    vdc->unrealize    = virtio_input_device_unrealize;
+    vdc->get_config   = virtio_input_get_config;
+    vdc->set_config   = virtio_input_set_config;
+    vdc->get_features = virtio_input_get_features;
+    vdc->set_status   = virtio_input_set_status;
+    vdc->reset        = virtio_input_reset;
+}
+
+static const TypeInfo virtio_input_info = {
+    .name          = TYPE_VIRTIO_INPUT,
+    .parent        = TYPE_VIRTIO_DEVICE,
+    .instance_size = sizeof(VirtIOInput),
+    .class_size    = sizeof(VirtIOInputClass),
+    .class_init    = virtio_input_class_init,
+    .abstract      = true,
+};
+
+/* ----------------------------------------------------------------- */
+
+static void virtio_register_types(void)
+{
+    type_register_static(&virtio_input_info);
+}
+
+type_init(virtio_register_types)
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index ce97514..5518192 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -23,6 +23,7 @@
 #include "hw/virtio/virtio-serial.h"
 #include "hw/virtio/virtio-scsi.h"
 #include "hw/virtio/virtio-balloon.h"
+#include "hw/virtio/virtio-input.h"
 #include "hw/pci/pci.h"
 #include "qemu/error-report.h"
 #include "hw/pci/msi.h"
@@ -1531,6 +1532,40 @@ static const TypeInfo virtio_rng_pci_info = {
     .class_init    = virtio_rng_pci_class_init,
 };
 
+/* virtio-input-pci */
+
+static int virtio_input_pci_init(VirtIOPCIProxy *vpci_dev)
+{
+    VirtIOInputPCI *vinput = VIRTIO_INPUT_PCI(vpci_dev);
+    DeviceState *vdev = DEVICE(&vinput->vdev);
+
+    qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
+    return qdev_init(vdev);
+}
+
+static void virtio_input_pci_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
+    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
+
+    k->init = virtio_input_pci_init;
+    set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
+
+    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_INPUT;
+    pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
+    pcidev_k->class_id = PCI_CLASS_OTHERS;
+}
+
+static const TypeInfo virtio_input_pci_info = {
+    .name          = TYPE_VIRTIO_INPUT_PCI,
+    .parent        = TYPE_VIRTIO_PCI,
+    .instance_size = sizeof(VirtIOInputPCI),
+    .class_init    = virtio_input_pci_class_init,
+    .abstract      = true,
+};
+
 /* virtio-pci-bus */
 
 static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
@@ -1575,6 +1610,7 @@ static const TypeInfo virtio_pci_bus_info = {
 static void virtio_pci_register_types(void)
 {
     type_register_static(&virtio_rng_pci_info);
+    type_register_static(&virtio_input_pci_info);
     type_register_static(&virtio_pci_bus_info);
     type_register_static(&virtio_pci_info);
 #ifdef CONFIG_VIRTFS
diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h
index dc332ae..f1e75ad 100644
--- a/hw/virtio/virtio-pci.h
+++ b/hw/virtio/virtio-pci.h
@@ -24,6 +24,7 @@
 #include "hw/virtio/virtio-balloon.h"
 #include "hw/virtio/virtio-bus.h"
 #include "hw/virtio/virtio-9p.h"
+#include "hw/virtio/virtio-input.h"
 #ifdef CONFIG_VIRTFS
 #include "hw/9pfs/virtio-9p.h"
 #endif
@@ -39,6 +40,7 @@ typedef struct VirtIOSerialPCI VirtIOSerialPCI;
 typedef struct VirtIONetPCI VirtIONetPCI;
 typedef struct VHostSCSIPCI VHostSCSIPCI;
 typedef struct VirtIORngPCI VirtIORngPCI;
+typedef struct VirtIOInputPCI VirtIOInputPCI;
 
 /* virtio-pci-bus */
 
@@ -199,6 +201,18 @@ struct VirtIORngPCI {
     VirtIORNG vdev;
 };
 
+/*
+ * virtio-input-pci: This extends VirtioPCIProxy.
+ */
+#define TYPE_VIRTIO_INPUT_PCI "virtio-input-pci"
+#define VIRTIO_INPUT_PCI(obj) \
+        OBJECT_CHECK(VirtIOInputPCI, (obj), TYPE_VIRTIO_INPUT_PCI)
+
+struct VirtIOInputPCI {
+    VirtIOPCIProxy parent_obj;
+    VirtIOInput vdev;
+};
+
 /* Virtio ABI version, if we increment this, we break the guest driver. */
 #define VIRTIO_PCI_ABI_VERSION          0
 
diff --git a/include/hw/virtio/virtio-input.h b/include/hw/virtio/virtio-input.h
new file mode 100644
index 0000000..718ebfd
--- /dev/null
+++ b/include/hw/virtio/virtio-input.h
@@ -0,0 +1,106 @@
+#ifndef _QEMU_VIRTIO_INPUT_H
+#define _QEMU_VIRTIO_INPUT_H
+
+#include "ui/input.h"
+
+/* ----------------------------------------------------------------- */
+/* virtio input protocol                                             */
+
+/* The Virtio ID for the virtio input device */
+#define VIRTIO_ID_INPUT 18
+
+enum virtio_input_config_select {
+    VIRTIO_INPUT_CFG_UNSET      = 0x00,
+    VIRTIO_INPUT_CFG_ID_NAME    = 0x01,
+    VIRTIO_INPUT_CFG_ID_SERIAL  = 0x02,
+    VIRTIO_INPUT_CFG_PROP_BITS  = 0x10,
+    VIRTIO_INPUT_CFG_EV_BITS    = 0x11,
+    VIRTIO_INPUT_CFG_ABS_INFO   = 0x12,
+};
+
+typedef struct virtio_input_absinfo {
+    uint32_t       min;
+    uint32_t       max;
+    uint32_t       fuzz;
+    uint32_t       flat;
+} virtio_input_absinfo;
+
+typedef struct virtio_input_config {
+    uint8_t        select;
+    uint8_t        subsel;
+    uint8_t        size;
+    uint8_t        reserved;
+    union {
+        char       string[128];
+        uint8_t    bitmap[128];
+        virtio_input_absinfo abs;
+    } u;
+} virtio_input_config;
+
+typedef struct virtio_input_event {
+    uint16_t       type;
+    uint16_t       code;
+    int32_t        value;
+} virtio_input_event;
+
+/* ----------------------------------------------------------------- */
+/* qemu internals                                                    */
+
+#define TYPE_VIRTIO_INPUT "virtio-input-device"
+#define VIRTIO_INPUT(obj) \
+        OBJECT_CHECK(VirtIOInput, (obj), TYPE_VIRTIO_INPUT)
+#define VIRTIO_INPUT_GET_PARENT_CLASS(obj) \
+        OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT)
+#define VIRTIO_INPUT_GET_CLASS(obj) \
+        OBJECT_GET_CLASS(VirtIOInputClass, obj, TYPE_VIRTIO_INPUT)
+#define VIRTIO_INPUT_CLASS(klass) \
+        OBJECT_CLASS_CHECK(VirtIOInputClass, klass, TYPE_VIRTIO_INPUT)
+
+typedef struct VirtIOInput VirtIOInput;
+typedef struct VirtIOInputClass VirtIOInputClass;
+typedef struct VirtIOInputConfig VirtIOInputConfig;
+
+struct virtio_input_conf {
+    char *serial;
+};
+
+struct VirtIOInputConfig {
+    virtio_input_config               config;
+    QTAILQ_ENTRY(VirtIOInputConfig)   node;
+};
+
+struct VirtIOInput {
+    VirtIODevice                      parent_obj;
+    uint8_t                           cfg_select;
+    uint8_t                           cfg_subsel;
+    uint32_t                          cfg_size;
+    QTAILQ_HEAD(, VirtIOInputConfig)  cfg_list;
+    VirtQueue                         *evt, *sts;
+    virtio_input_conf                 input;
+
+    virtio_input_event                *queue;
+    uint32_t                          qindex, qsize;
+
+    bool                              active;
+};
+
+struct VirtIOInputClass {
+    /*< private >*/
+    VirtioDeviceClass parent;
+    /*< public >*/
+
+    DeviceRealize realize;
+    DeviceUnrealize unrealize;
+    void (*change_active)(VirtIOInput *vinput);
+    void (*handle_status)(VirtIOInput *vinput, virtio_input_event *event);
+};
+
+void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event);
+void virtio_input_init_config(VirtIOInput *vinput,
+                              virtio_input_config *config);
+void virtio_input_add_config(VirtIOInput *vinput,
+                             virtio_input_config *config);
+void virtio_input_idstr_config(VirtIOInput *vinput,
+                               uint8_t select, const char *string);
+
+#endif /* _QEMU_VIRTIO_INPUT_H */
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 3e54e90..93d1607 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -222,6 +222,7 @@ VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf,
                               struct virtio_net_conf *net,
                               uint32_t host_features);
 typedef struct virtio_serial_conf virtio_serial_conf;
+typedef struct virtio_input_conf virtio_input_conf;
 typedef struct VirtIOSCSIConf VirtIOSCSIConf;
 typedef struct VirtIORNGConf VirtIORNGConf;
 
-- 
1.8.3.1

^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [Qemu-devel] [PATCH 3/4] virtio-input: emulated devices
  2014-06-03  8:42 [Qemu-devel] [PATCH 0/4] input: add virtio input devices Gerd Hoffmann
  2014-06-03  8:42 ` [Qemu-devel] [PATCH 1/4] pci: add virtio input pci device id Gerd Hoffmann
  2014-06-03  8:42 ` [Qemu-devel] [PATCH 2/4] virtio-input: core code & base class Gerd Hoffmann
@ 2014-06-03  8:42 ` Gerd Hoffmann
  2014-06-03  8:42 ` [Qemu-devel] [PATCH 4/4] virtio-input: evdev passthrough Gerd Hoffmann
  3 siblings, 0 replies; 5+ messages in thread
From: Gerd Hoffmann @ 2014-06-03  8:42 UTC (permalink / raw)
  To: qemu-devel; +Cc: Gerd Hoffmann, Anthony Liguori, Michael S. Tsirkin

This patch adds the virtio-input-hid base class and
virtio-{keyboard,mouse,tablet} subclasses building on the base class.
They are hooked up to the qemu input core and deliver input events
to the guest like all other hid devices (ps/2 kbd, usb tablet, ...).

Using them is as simple as adding "-device virtio-tablet-pci" to your
command line.  If you want add multiple devices but don't want waste
a pci slot for each you can compose a multifunction device this way:

qemu -device virtio-keyboard-pci,addr=0d.0,multifunction=on \
     -device virtio-tablet-pci,addr=0d.1,multifunction=on

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/input/Makefile.objs           |   1 +
 hw/input/virtio-input-hid.c      | 484 +++++++++++++++++++++++++++++++++++++++
 hw/virtio/virtio-pci.c           |  68 ++++++
 hw/virtio/virtio-pci.h           |  13 ++
 include/hw/virtio/virtio-input.h |  21 ++
 5 files changed, 587 insertions(+)
 create mode 100644 hw/input/virtio-input-hid.c

diff --git a/hw/input/Makefile.objs b/hw/input/Makefile.objs
index ee8bba9..0dae710 100644
--- a/hw/input/Makefile.objs
+++ b/hw/input/Makefile.objs
@@ -10,6 +10,7 @@ common-obj-$(CONFIG_VMMOUSE) += vmmouse.o
 
 ifeq ($(CONFIG_LINUX),y)
 common-obj-$(CONFIG_VIRTIO) += virtio-input.o
+common-obj-$(CONFIG_VIRTIO) += virtio-input-hid.o
 endif
 
 obj-$(CONFIG_MILKYMIST) += milkymist-softusb.o
diff --git a/hw/input/virtio-input-hid.c b/hw/input/virtio-input-hid.c
new file mode 100644
index 0000000..feb7918
--- /dev/null
+++ b/hw/input/virtio-input-hid.c
@@ -0,0 +1,484 @@
+/*
+ * 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/iov.h"
+
+#include "hw/qdev.h"
+#include "hw/virtio/virtio.h"
+#include "hw/virtio/virtio-input.h"
+
+#include "ui/console.h"
+
+#include <linux/input.h>
+
+#define VIRTIO_ID_NAME_KEYBOARD "QEMU Virtio Keyboard"
+#define VIRTIO_ID_NAME_MOUSE    "QEMU Virtio Mouse"
+#define VIRTIO_ID_NAME_TABLET   "QEMU Virtio Tablet"
+
+/* ----------------------------------------------------------------- */
+
+static const unsigned int keymap_qcode[Q_KEY_CODE_MAX] = {
+    [Q_KEY_CODE_ESC]                 = KEY_ESC,
+    [Q_KEY_CODE_1]                   = KEY_1,
+    [Q_KEY_CODE_2]                   = KEY_2,
+    [Q_KEY_CODE_3]                   = KEY_3,
+    [Q_KEY_CODE_4]                   = KEY_4,
+    [Q_KEY_CODE_5]                   = KEY_5,
+    [Q_KEY_CODE_6]                   = KEY_6,
+    [Q_KEY_CODE_7]                   = KEY_7,
+    [Q_KEY_CODE_8]                   = KEY_8,
+    [Q_KEY_CODE_9]                   = KEY_9,
+    [Q_KEY_CODE_0]                   = KEY_0,
+    [Q_KEY_CODE_MINUS]               = KEY_MINUS,
+    [Q_KEY_CODE_EQUAL]               = KEY_EQUAL,
+    [Q_KEY_CODE_BACKSPACE]           = KEY_BACKSPACE,
+
+    [Q_KEY_CODE_TAB]                 = KEY_TAB,
+    [Q_KEY_CODE_Q]                   = KEY_Q,
+    [Q_KEY_CODE_W]                   = KEY_W,
+    [Q_KEY_CODE_E]                   = KEY_E,
+    [Q_KEY_CODE_R]                   = KEY_R,
+    [Q_KEY_CODE_T]                   = KEY_T,
+    [Q_KEY_CODE_Y]                   = KEY_Y,
+    [Q_KEY_CODE_U]                   = KEY_U,
+    [Q_KEY_CODE_I]                   = KEY_I,
+    [Q_KEY_CODE_O]                   = KEY_O,
+    [Q_KEY_CODE_P]                   = KEY_P,
+    [Q_KEY_CODE_BRACKET_LEFT]        = KEY_LEFTBRACE,
+    [Q_KEY_CODE_BRACKET_RIGHT]       = KEY_RIGHTBRACE,
+    [Q_KEY_CODE_RET]                 = KEY_ENTER,
+
+    [Q_KEY_CODE_CTRL]                = KEY_LEFTCTRL,
+    [Q_KEY_CODE_A]                   = KEY_A,
+    [Q_KEY_CODE_S]                   = KEY_S,
+    [Q_KEY_CODE_D]                   = KEY_D,
+    [Q_KEY_CODE_F]                   = KEY_F,
+    [Q_KEY_CODE_G]                   = KEY_G,
+    [Q_KEY_CODE_H]                   = KEY_H,
+    [Q_KEY_CODE_J]                   = KEY_J,
+    [Q_KEY_CODE_K]                   = KEY_K,
+    [Q_KEY_CODE_L]                   = KEY_L,
+    [Q_KEY_CODE_SEMICOLON]           = KEY_SEMICOLON,
+    [Q_KEY_CODE_APOSTROPHE]          = KEY_APOSTROPHE,
+    [Q_KEY_CODE_GRAVE_ACCENT]        = KEY_GRAVE,
+
+    [Q_KEY_CODE_SHIFT]               = KEY_LEFTSHIFT,
+    [Q_KEY_CODE_BACKSLASH]           = KEY_BACKSLASH,
+    [Q_KEY_CODE_LESS]                = KEY_102ND,
+    [Q_KEY_CODE_Z]                   = KEY_Z,
+    [Q_KEY_CODE_X]                   = KEY_X,
+    [Q_KEY_CODE_C]                   = KEY_C,
+    [Q_KEY_CODE_V]                   = KEY_V,
+    [Q_KEY_CODE_B]                   = KEY_B,
+    [Q_KEY_CODE_N]                   = KEY_N,
+    [Q_KEY_CODE_M]                   = KEY_M,
+    [Q_KEY_CODE_COMMA]               = KEY_COMMA,
+    [Q_KEY_CODE_DOT]                 = KEY_DOT,
+    [Q_KEY_CODE_SLASH]               = KEY_SLASH,
+    [Q_KEY_CODE_SHIFT_R]             = KEY_RIGHTSHIFT,
+
+    [Q_KEY_CODE_ALT]                 = KEY_LEFTALT,
+    [Q_KEY_CODE_SPC]                 = KEY_SPACE,
+    [Q_KEY_CODE_CAPS_LOCK]           = KEY_CAPSLOCK,
+
+    [Q_KEY_CODE_F1]                  = KEY_F1,
+    [Q_KEY_CODE_F2]                  = KEY_F2,
+    [Q_KEY_CODE_F3]                  = KEY_F3,
+    [Q_KEY_CODE_F4]                  = KEY_F4,
+    [Q_KEY_CODE_F5]                  = KEY_F5,
+    [Q_KEY_CODE_F6]                  = KEY_F6,
+    [Q_KEY_CODE_F7]                  = KEY_F7,
+    [Q_KEY_CODE_F8]                  = KEY_F8,
+    [Q_KEY_CODE_F9]                  = KEY_F9,
+    [Q_KEY_CODE_F10]                 = KEY_F10,
+    [Q_KEY_CODE_NUM_LOCK]            = KEY_NUMLOCK,
+    [Q_KEY_CODE_SCROLL_LOCK]         = KEY_SCROLLLOCK,
+
+    [Q_KEY_CODE_KP_0]                = KEY_KP0,
+    [Q_KEY_CODE_KP_1]                = KEY_KP1,
+    [Q_KEY_CODE_KP_2]                = KEY_KP2,
+    [Q_KEY_CODE_KP_3]                = KEY_KP3,
+    [Q_KEY_CODE_KP_4]                = KEY_KP4,
+    [Q_KEY_CODE_KP_5]                = KEY_KP5,
+    [Q_KEY_CODE_KP_6]                = KEY_KP6,
+    [Q_KEY_CODE_KP_7]                = KEY_KP7,
+    [Q_KEY_CODE_KP_8]                = KEY_KP8,
+    [Q_KEY_CODE_KP_9]                = KEY_KP9,
+    [Q_KEY_CODE_KP_SUBTRACT]         = KEY_KPMINUS,
+    [Q_KEY_CODE_KP_ADD]              = KEY_KPPLUS,
+    [Q_KEY_CODE_KP_DECIMAL]          = KEY_KPDOT,
+    [Q_KEY_CODE_KP_ENTER]            = KEY_KPENTER,
+    [Q_KEY_CODE_KP_DIVIDE]           = KEY_KPSLASH,
+    [Q_KEY_CODE_KP_MULTIPLY]         = KEY_KPASTERISK,
+
+    [Q_KEY_CODE_F11]                 = KEY_F11,
+    [Q_KEY_CODE_F12]                 = KEY_F12,
+
+    [Q_KEY_CODE_CTRL_R]              = KEY_RIGHTCTRL,
+    [Q_KEY_CODE_SYSRQ]               = KEY_SYSRQ,
+    [Q_KEY_CODE_ALT_R]               = KEY_RIGHTALT,
+
+    [Q_KEY_CODE_HOME]                = KEY_HOME,
+    [Q_KEY_CODE_UP]                  = KEY_UP,
+    [Q_KEY_CODE_PGUP]                = KEY_PAGEUP,
+    [Q_KEY_CODE_LEFT]                = KEY_LEFT,
+    [Q_KEY_CODE_RIGHT]               = KEY_RIGHT,
+    [Q_KEY_CODE_END]                 = KEY_END,
+    [Q_KEY_CODE_DOWN]                = KEY_DOWN,
+    [Q_KEY_CODE_PGDN]                = KEY_PAGEDOWN,
+    [Q_KEY_CODE_INSERT]              = KEY_INSERT,
+    [Q_KEY_CODE_DELETE]              = KEY_DELETE,
+
+    [Q_KEY_CODE_META_L]              = KEY_LEFTMETA,
+    [Q_KEY_CODE_META_R]              = KEY_RIGHTMETA,
+    [Q_KEY_CODE_MENU]                = KEY_MENU,
+};
+
+static const unsigned int keymap_button[INPUT_BUTTON_MAX] = {
+    [INPUT_BUTTON_LEFT]              = BTN_LEFT,
+    [INPUT_BUTTON_RIGHT]             = BTN_RIGHT,
+    [INPUT_BUTTON_MIDDLE]            = BTN_MIDDLE,
+    [INPUT_BUTTON_WHEEL_UP]          = BTN_GEAR_UP,
+    [INPUT_BUTTON_WHEEL_DOWN]        = BTN_GEAR_DOWN,
+};
+
+static const unsigned int axismap_rel[INPUT_AXIS_MAX] = {
+    [INPUT_AXIS_X]                   = REL_X,
+    [INPUT_AXIS_Y]                   = REL_Y,
+};
+
+static const unsigned int axismap_abs[INPUT_AXIS_MAX] = {
+    [INPUT_AXIS_X]                   = ABS_X,
+    [INPUT_AXIS_Y]                   = ABS_Y,
+};
+
+/* ----------------------------------------------------------------- */
+
+static void virtio_input_key_config(VirtIOInput *vinput,
+                                    const unsigned int *keymap,
+                                    size_t mapsize)
+{
+    virtio_input_config keys;
+    int i, bit, byte, bmax = 0;
+
+    memset(&keys, 0, sizeof(keys));
+    for (i = 0; i < mapsize; i++) {
+        bit = keymap[i];
+        if (!bit) {
+            continue;
+        }
+        byte = bit / 8;
+        bit  = bit % 8;
+        keys.u.bitmap[byte] |= (1 << bit);
+        if (bmax < byte+1) {
+            bmax = byte+1;
+        }
+    }
+    keys.select = VIRTIO_INPUT_CFG_EV_BITS;
+    keys.subsel = EV_KEY;
+    keys.size   = bmax;
+    virtio_input_add_config(vinput, &keys);
+}
+
+static void virtio_input_handle_event(DeviceState *dev, QemuConsole *src,
+                                      InputEvent *evt)
+{
+    VirtIOInput *vinput = VIRTIO_INPUT(dev);
+    virtio_input_event event;
+    int qcode;
+
+    switch (evt->kind) {
+    case INPUT_EVENT_KIND_KEY:
+        qcode = qemu_input_key_value_to_qcode(evt->key->key);
+        if (qcode && keymap_qcode[qcode]) {
+            event.type  = cpu_to_le16(EV_KEY);
+            event.code  = cpu_to_le16(keymap_qcode[qcode]);
+            event.value = cpu_to_le32(evt->key->down ? 1 : 0);
+            virtio_input_send(vinput, &event);
+        } else {
+            if (evt->key->down) {
+                fprintf(stderr, "%s: unmapped key: %d [%s]\n", __func__,
+                        qcode, QKeyCode_lookup[qcode]);
+            }
+        }
+        break;
+    case INPUT_EVENT_KIND_BTN:
+        if (keymap_button[evt->btn->button]) {
+            event.type  = cpu_to_le16(EV_KEY);
+            event.code  = cpu_to_le16(keymap_button[evt->btn->button]);
+            event.value = cpu_to_le32(evt->btn->down ? 1 : 0);
+            virtio_input_send(vinput, &event);
+        } else {
+            if (evt->btn->down) {
+                fprintf(stderr, "%s: unmapped button: %d [%s]\n", __func__,
+                        evt->btn->button, InputButton_lookup[evt->btn->button]);
+            }
+        }
+        break;
+    case INPUT_EVENT_KIND_REL:
+        event.type  = cpu_to_le16(EV_REL);
+        event.code  = cpu_to_le16(axismap_rel[evt->rel->axis]);
+        event.value = cpu_to_le32(evt->rel->value);
+        virtio_input_send(vinput, &event);
+        break;
+    case INPUT_EVENT_KIND_ABS:
+        event.type  = cpu_to_le16(EV_ABS);
+        event.code  = cpu_to_le16(axismap_abs[evt->abs->axis]);
+        event.value = cpu_to_le32(evt->abs->value);
+        virtio_input_send(vinput, &event);
+        break;
+    default:
+        /* keep gcc happy */
+        break;
+    }
+}
+
+static void virtio_input_handle_sync(DeviceState *dev)
+{
+    VirtIOInput *vinput = VIRTIO_INPUT(dev);
+    virtio_input_event event = {
+        .type  = cpu_to_le16(EV_SYN),
+        .code  = cpu_to_le16(SYN_REPORT),
+        .value = 0,
+    };
+
+    virtio_input_send(vinput, &event);
+}
+
+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);
+}
+
+static void virtio_input_hid_unrealize(DeviceState *dev, Error **errp)
+{
+    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(dev);
+    qemu_input_handler_unregister(vhid->hs);
+}
+
+static void virtio_input_hid_change_active(VirtIOInput *vinput)
+{
+    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(vinput);
+
+    if (vinput->active) {
+        qemu_input_handler_activate(vhid->hs);
+    } else {
+        qemu_input_handler_deactivate(vhid->hs);
+    }
+}
+
+static void virtio_input_hid_handle_status(VirtIOInput *vinput,
+                                           virtio_input_event *event)
+{
+    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(vinput);
+    int ledbit = 0;
+
+    switch (le16_to_cpu(event->type)) {
+    case EV_LED:
+        if (event->code == LED_NUML) {
+            ledbit = QEMU_NUM_LOCK_LED;
+        } else if (event->code == LED_CAPSL) {
+            ledbit = QEMU_CAPS_LOCK_LED;
+        } else if (event->code == LED_SCROLLL) {
+            ledbit = QEMU_SCROLL_LOCK_LED;
+        }
+        if (event->value) {
+            vhid->ledstate |= ledbit;
+        } else {
+            vhid->ledstate &= ~ledbit;
+        }
+        kbd_put_ledstate(vhid->ledstate);
+        break;
+    default:
+        fprintf(stderr, "%s: unknown type %d\n", __func__,
+                le16_to_cpu(event->type));
+        break;
+    }
+}
+
+static void virtio_input_hid_class_init(ObjectClass *klass, void *data)
+{
+    VirtIOInputClass *vic = VIRTIO_INPUT_CLASS(klass);
+
+    vic->realize       = virtio_input_hid_realize;
+    vic->unrealize     = virtio_input_hid_unrealize;
+    vic->change_active = virtio_input_hid_change_active;
+    vic->handle_status = virtio_input_hid_handle_status;
+}
+
+static const TypeInfo virtio_input_hid_info = {
+    .name          = TYPE_VIRTIO_INPUT_HID,
+    .parent        = TYPE_VIRTIO_INPUT,
+    .instance_size = sizeof(VirtIOInputHID),
+    .class_init    = virtio_input_hid_class_init,
+    .abstract      = true,
+};
+
+/* ----------------------------------------------------------------- */
+
+static QemuInputHandler virtio_keyboard_handler = {
+    .name  = VIRTIO_ID_NAME_KEYBOARD,
+    .mask  = INPUT_EVENT_MASK_KEY,
+    .event = virtio_input_handle_event,
+    .sync  = virtio_input_handle_sync,
+};
+
+static struct virtio_input_config virtio_keyboard_config[] = {
+    {
+        .select    = VIRTIO_INPUT_CFG_ID_NAME,
+        .size      = sizeof(VIRTIO_ID_NAME_KEYBOARD),
+        .u.string  = VIRTIO_ID_NAME_KEYBOARD,
+    },{
+        .select    = VIRTIO_INPUT_CFG_EV_BITS,
+        .subsel    = EV_REP,
+        .size      = 1,
+    },{
+        .select    = VIRTIO_INPUT_CFG_EV_BITS,
+        .subsel    = EV_LED,
+        .size      = 1,
+        .u.bitmap  = {
+            (1 << LED_NUML) | (1 << LED_CAPSL) | (1 << LED_SCROLLL),
+        },
+    },
+    { /* end of list */ },
+};
+
+static void virtio_keyboard_init(Object *obj)
+{
+    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(obj);
+    VirtIOInput *vinput = VIRTIO_INPUT(obj);
+
+    vhid->handler = &virtio_keyboard_handler;
+    virtio_input_init_config(vinput, virtio_keyboard_config);
+    virtio_input_key_config(vinput, keymap_qcode,
+                            ARRAY_SIZE(keymap_qcode));
+}
+
+static const TypeInfo virtio_keyboard_info = {
+    .name          = TYPE_VIRTIO_KEYBOARD,
+    .parent        = TYPE_VIRTIO_INPUT_HID,
+    .instance_size = sizeof(VirtIOInputHID),
+    .instance_init = virtio_keyboard_init,
+};
+
+/* ----------------------------------------------------------------- */
+
+static QemuInputHandler virtio_mouse_handler = {
+    .name  = VIRTIO_ID_NAME_MOUSE,
+    .mask  = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL,
+    .event = virtio_input_handle_event,
+    .sync  = virtio_input_handle_sync,
+};
+
+static struct virtio_input_config virtio_mouse_config[] = {
+    {
+        .select    = VIRTIO_INPUT_CFG_ID_NAME,
+        .size      = sizeof(VIRTIO_ID_NAME_MOUSE),
+        .u.string  = VIRTIO_ID_NAME_MOUSE,
+    },{
+        .select    = VIRTIO_INPUT_CFG_EV_BITS,
+        .subsel    = EV_REL,
+        .size      = 1,
+        .u.bitmap  = {
+            (1 << REL_X) | (1 << REL_Y),
+        },
+    },
+    { /* end of list */ },
+};
+
+static void virtio_mouse_init(Object *obj)
+{
+    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(obj);
+    VirtIOInput *vinput = VIRTIO_INPUT(obj);
+
+    vhid->handler = &virtio_mouse_handler;
+    virtio_input_init_config(vinput, virtio_mouse_config);
+    virtio_input_key_config(vinput, keymap_button,
+                            ARRAY_SIZE(keymap_button));
+}
+
+static const TypeInfo virtio_mouse_info = {
+    .name          = TYPE_VIRTIO_MOUSE,
+    .parent        = TYPE_VIRTIO_INPUT_HID,
+    .instance_size = sizeof(VirtIOInputHID),
+    .instance_init = virtio_mouse_init,
+};
+
+/* ----------------------------------------------------------------- */
+
+static QemuInputHandler virtio_tablet_handler = {
+    .name  = VIRTIO_ID_NAME_TABLET,
+    .mask  = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_ABS,
+    .event = virtio_input_handle_event,
+    .sync  = virtio_input_handle_sync,
+};
+
+static struct virtio_input_config virtio_tablet_config[] = {
+    {
+        .select    = VIRTIO_INPUT_CFG_ID_NAME,
+        .size      = sizeof(VIRTIO_ID_NAME_TABLET),
+        .u.string  = VIRTIO_ID_NAME_TABLET,
+    },{
+        .select    = VIRTIO_INPUT_CFG_EV_BITS,
+        .subsel    = EV_ABS,
+        .size      = 1,
+        .u.bitmap  = {
+            (1 << ABS_X) | (1 << ABS_Y),
+        },
+    },{
+        .select    = VIRTIO_INPUT_CFG_ABS_INFO,
+        .subsel    = ABS_X,
+        .size      = sizeof(virtio_input_absinfo),
+#if 0
+        /* FIXME */
+        .u.abs.max = cpu_to_le32(INPUT_EVENT_ABS_SIZE),
+#else
+        .u.abs.max = INPUT_EVENT_ABS_SIZE,
+#endif
+    },{
+        .select    = VIRTIO_INPUT_CFG_ABS_INFO,
+        .subsel    = ABS_Y,
+        .size      = sizeof(virtio_input_absinfo),
+#if 0
+        /* FIXME */
+        .u.abs.max = cpu_to_le32(INPUT_EVENT_ABS_SIZE),
+#else
+        .u.abs.max = INPUT_EVENT_ABS_SIZE,
+#endif
+    },
+    { /* end of list */ },
+};
+
+static void virtio_tablet_init(Object *obj)
+{
+    VirtIOInputHID *vhid = VIRTIO_INPUT_HID(obj);
+    VirtIOInput *vinput = VIRTIO_INPUT(obj);
+
+    vhid->handler = &virtio_tablet_handler;
+    virtio_input_init_config(vinput, virtio_tablet_config);
+    virtio_input_key_config(vinput, keymap_button,
+                            ARRAY_SIZE(keymap_button));
+}
+
+static const TypeInfo virtio_tablet_info = {
+    .name          = TYPE_VIRTIO_TABLET,
+    .parent        = TYPE_VIRTIO_INPUT_HID,
+    .instance_size = sizeof(VirtIOInputHID),
+    .instance_init = virtio_tablet_init,
+};
+
+/* ----------------------------------------------------------------- */
+
+static void virtio_register_types(void)
+{
+    type_register_static(&virtio_input_hid_info);
+    type_register_static(&virtio_keyboard_info);
+    type_register_static(&virtio_mouse_info);
+    type_register_static(&virtio_tablet_info);
+}
+
+type_init(virtio_register_types)
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index 5518192..b421c01 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1534,6 +1534,13 @@ static const TypeInfo virtio_rng_pci_info = {
 
 /* virtio-input-pci */
 
+static Property virtio_input_hid_pci_properties[] = {
+    DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
+    DEFINE_VIRTIO_INPUT_PROPERTIES(VirtIOInputPCI, vdev.input),
+    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static int virtio_input_pci_init(VirtIOPCIProxy *vpci_dev)
 {
     VirtIOInputPCI *vinput = VIRTIO_INPUT_PCI(vpci_dev);
@@ -1558,6 +1565,34 @@ static void virtio_input_pci_class_init(ObjectClass *klass, void *data)
     pcidev_k->class_id = PCI_CLASS_OTHERS;
 }
 
+static void virtio_input_hid_pci_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->props = virtio_input_hid_pci_properties;
+}
+
+static void virtio_keyboard_initfn(Object *obj)
+{
+    VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
+    object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_KEYBOARD);
+    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
+}
+
+static void virtio_mouse_initfn(Object *obj)
+{
+    VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
+    object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_MOUSE);
+    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
+}
+
+static void virtio_tablet_initfn(Object *obj)
+{
+    VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
+    object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_TABLET);
+    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
+}
+
 static const TypeInfo virtio_input_pci_info = {
     .name          = TYPE_VIRTIO_INPUT_PCI,
     .parent        = TYPE_VIRTIO_PCI,
@@ -1566,6 +1601,35 @@ static const TypeInfo virtio_input_pci_info = {
     .abstract      = true,
 };
 
+static const TypeInfo virtio_input_hid_pci_info = {
+    .name          = TYPE_VIRTIO_INPUT_HID_PCI,
+    .parent        = TYPE_VIRTIO_INPUT_PCI,
+    .instance_size = sizeof(VirtIOInputHIDPCI),
+    .class_init    = virtio_input_hid_pci_class_init,
+    .abstract      = true,
+};
+
+static const TypeInfo virtio_keyboard_pci_info = {
+    .name          = TYPE_VIRTIO_KEYBOARD_PCI,
+    .parent        = TYPE_VIRTIO_INPUT_HID_PCI,
+    .instance_size = sizeof(VirtIOInputHIDPCI),
+    .instance_init = virtio_keyboard_initfn,
+};
+
+static const TypeInfo virtio_mouse_pci_info = {
+    .name          = TYPE_VIRTIO_MOUSE_PCI,
+    .parent        = TYPE_VIRTIO_INPUT_HID_PCI,
+    .instance_size = sizeof(VirtIOInputHIDPCI),
+    .instance_init = virtio_mouse_initfn,
+};
+
+static const TypeInfo virtio_tablet_pci_info = {
+    .name          = TYPE_VIRTIO_TABLET_PCI,
+    .parent        = TYPE_VIRTIO_INPUT_HID_PCI,
+    .instance_size = sizeof(VirtIOInputHIDPCI),
+    .instance_init = virtio_tablet_initfn,
+};
+
 /* virtio-pci-bus */
 
 static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
@@ -1611,6 +1675,10 @@ static void virtio_pci_register_types(void)
 {
     type_register_static(&virtio_rng_pci_info);
     type_register_static(&virtio_input_pci_info);
+    type_register_static(&virtio_input_hid_pci_info);
+    type_register_static(&virtio_keyboard_pci_info);
+    type_register_static(&virtio_mouse_pci_info);
+    type_register_static(&virtio_tablet_pci_info);
     type_register_static(&virtio_pci_bus_info);
     type_register_static(&virtio_pci_info);
 #ifdef CONFIG_VIRTFS
diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h
index f1e75ad..f615ae6 100644
--- a/hw/virtio/virtio-pci.h
+++ b/hw/virtio/virtio-pci.h
@@ -41,6 +41,7 @@ typedef struct VirtIONetPCI VirtIONetPCI;
 typedef struct VHostSCSIPCI VHostSCSIPCI;
 typedef struct VirtIORngPCI VirtIORngPCI;
 typedef struct VirtIOInputPCI VirtIOInputPCI;
+typedef struct VirtIOInputHIDPCI VirtIOInputHIDPCI;
 
 /* virtio-pci-bus */
 
@@ -213,6 +214,18 @@ struct VirtIOInputPCI {
     VirtIOInput vdev;
 };
 
+#define TYPE_VIRTIO_INPUT_HID_PCI "virtio-input-hid-pci"
+#define TYPE_VIRTIO_KEYBOARD_PCI  "virtio-keyboard-pci"
+#define TYPE_VIRTIO_MOUSE_PCI     "virtio-mouse-pci"
+#define TYPE_VIRTIO_TABLET_PCI    "virtio-tablet-pci"
+#define VIRTIO_INPUT_HID_PCI(obj) \
+        OBJECT_CHECK(VirtIOInputHIDPCI, (obj), TYPE_VIRTIO_INPUT_HID_PCI)
+
+struct VirtIOInputHIDPCI {
+    VirtIOPCIProxy parent_obj;
+    VirtIOInputHID vdev;
+};
+
 /* Virtio ABI version, if we increment this, we break the guest driver. */
 #define VIRTIO_PCI_ABI_VERSION          0
 
diff --git a/include/hw/virtio/virtio-input.h b/include/hw/virtio/virtio-input.h
index 718ebfd..ca5bcee 100644
--- a/include/hw/virtio/virtio-input.h
+++ b/include/hw/virtio/virtio-input.h
@@ -56,9 +56,23 @@ typedef struct virtio_input_event {
 #define VIRTIO_INPUT_CLASS(klass) \
         OBJECT_CLASS_CHECK(VirtIOInputClass, klass, TYPE_VIRTIO_INPUT)
 
+#define TYPE_VIRTIO_INPUT_HID "virtio-input-hid"
+#define TYPE_VIRTIO_KEYBOARD  "virtio-keyboard"
+#define TYPE_VIRTIO_MOUSE     "virtio-mouse"
+#define TYPE_VIRTIO_TABLET    "virtio-tablet"
+
+#define VIRTIO_INPUT_HID(obj) \
+        OBJECT_CHECK(VirtIOInputHID, (obj), TYPE_VIRTIO_INPUT_HID)
+#define VIRTIO_INPUT_HID_GET_PARENT_CLASS(obj) \
+        OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HID)
+
+#define DEFINE_VIRTIO_INPUT_PROPERTIES(_state, _field)       \
+        DEFINE_PROP_STRING("serial", _state, _field.serial)
+
 typedef struct VirtIOInput VirtIOInput;
 typedef struct VirtIOInputClass VirtIOInputClass;
 typedef struct VirtIOInputConfig VirtIOInputConfig;
+typedef struct VirtIOInputHID VirtIOInputHID;
 
 struct virtio_input_conf {
     char *serial;
@@ -95,6 +109,13 @@ struct VirtIOInputClass {
     void (*handle_status)(VirtIOInput *vinput, virtio_input_event *event);
 };
 
+struct VirtIOInputHID {
+    VirtIOInput                       parent_obj;
+    QemuInputHandler                  *handler;
+    QemuInputHandlerState             *hs;
+    int                               ledstate;
+};
+
 void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event);
 void virtio_input_init_config(VirtIOInput *vinput,
                               virtio_input_config *config);
-- 
1.8.3.1

^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [Qemu-devel] [PATCH 4/4] virtio-input: evdev passthrough
  2014-06-03  8:42 [Qemu-devel] [PATCH 0/4] input: add virtio input devices Gerd Hoffmann
                   ` (2 preceding siblings ...)
  2014-06-03  8:42 ` [Qemu-devel] [PATCH 3/4] virtio-input: emulated devices Gerd Hoffmann
@ 2014-06-03  8:42 ` Gerd Hoffmann
  3 siblings, 0 replies; 5+ messages in thread
From: Gerd Hoffmann @ 2014-06-03  8:42 UTC (permalink / raw)
  To: qemu-devel; +Cc: Gerd Hoffmann, Anthony Liguori, Michael S. Tsirkin

This allows to assign host input devices to the guest:

qemu -device virto-input-host-pci,evdev=/dev/input/event<nr>

The guest gets exclusive access to the input device, so be careful
with assigning the keyboard if you have only one connected to your
machine.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/input/Makefile.objs           |   1 +
 hw/input/virtio-input-host.c     | 172 +++++++++++++++++++++++++++++++++++++++
 hw/virtio/virtio-pci.c           |  31 +++++++
 hw/virtio/virtio-pci.h           |  10 +++
 include/hw/virtio/virtio-input.h |  13 +++
 5 files changed, 227 insertions(+)
 create mode 100644 hw/input/virtio-input-host.c

diff --git a/hw/input/Makefile.objs b/hw/input/Makefile.objs
index 0dae710..624ba7e 100644
--- a/hw/input/Makefile.objs
+++ b/hw/input/Makefile.objs
@@ -11,6 +11,7 @@ common-obj-$(CONFIG_VMMOUSE) += vmmouse.o
 ifeq ($(CONFIG_LINUX),y)
 common-obj-$(CONFIG_VIRTIO) += virtio-input.o
 common-obj-$(CONFIG_VIRTIO) += virtio-input-hid.o
+common-obj-$(CONFIG_VIRTIO) += virtio-input-host.o
 endif
 
 obj-$(CONFIG_MILKYMIST) += milkymist-softusb.o
diff --git a/hw/input/virtio-input-host.c b/hw/input/virtio-input-host.c
new file mode 100644
index 0000000..30d5c1c
--- /dev/null
+++ b/hw/input/virtio-input-host.c
@@ -0,0 +1,172 @@
+/*
+ * 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-common.h"
+#include "qemu/sockets.h"
+
+#include "hw/qdev.h"
+#include "hw/virtio/virtio.h"
+#include "hw/virtio/virtio-input.h"
+
+#include "ui/console.h"
+
+#include <linux/input.h>
+
+/* ----------------------------------------------------------------- */
+
+static struct virtio_input_config virtio_input_host_config[] = {
+    { /* empty list */ },
+};
+
+static void virtio_input_host_event(void *opaque)
+{
+    VirtIOInputHost *vih = opaque;
+    VirtIOInput *vinput = VIRTIO_INPUT(vih);
+    struct virtio_input_event virtio;
+    struct input_event evdev;
+    int rc;
+
+    for (;;) {
+        rc = read(vih->fd, &evdev, sizeof(evdev));
+        if (rc != sizeof(evdev)) {
+            break;
+        }
+
+        virtio.type  = cpu_to_le16(evdev.type);
+        virtio.code  = cpu_to_le16(evdev.code);
+        virtio.value = cpu_to_le32(evdev.value);
+        virtio_input_send(vinput, &virtio);
+    }
+}
+
+static void virtio_input_bits_config(VirtIOInputHost *vih,
+                                     int type, int count)
+{
+    virtio_input_config bits;
+    int rc, i, size = 0;
+
+    memset(&bits, 0, sizeof(bits));
+    rc = ioctl(vih->fd, EVIOCGBIT(type, count/8), bits.u.bitmap);
+    if (rc < 0) {
+        return;
+    }
+
+    for (i = 0; i < count/8; i++) {
+        if (bits.u.bitmap[i]) {
+            size = i+1;
+        }
+    }
+    if (size == 0) {
+        return;
+    }
+
+    bits.select = VIRTIO_INPUT_CFG_EV_BITS;
+    bits.subsel = type;
+    bits.size   = size;
+    virtio_input_add_config(VIRTIO_INPUT(vih), &bits);
+}
+
+static void virtio_input_host_realize(DeviceState *dev, Error **errp)
+{
+    VirtIOInputHost *vih = VIRTIO_INPUT_HOST(dev);
+    VirtIOInput *vinput = VIRTIO_INPUT(dev);
+    virtio_input_config id;
+    int rc, ver;
+
+    if (!vih->evdev) {
+        error_setg(errp, "evdev property is required");
+        return;
+    }
+
+    vih->fd = open(vih->evdev, O_RDWR);
+    if (vih->fd < 0)  {
+        error_setg_file_open(errp, errno, vih->evdev);
+        return;
+    }
+    qemu_set_nonblock(vih->fd);
+
+    rc = ioctl(vih->fd, EVIOCGVERSION, &ver);
+    if (rc < 0) {
+        error_setg(errp, "%s: is not an evdev device", vih->evdev);
+        goto err_close;
+    }
+
+    rc = ioctl(vih->fd, EVIOCGRAB, 1);
+    if (rc < 0) {
+        error_setg_errno(errp, errno, "%s: failed to get exclusive access",
+                         vih->evdev);
+        goto err_close;
+    }
+
+    memset(&id, 0, sizeof(id));
+    ioctl(vih->fd, EVIOCGNAME(sizeof(id.u.string)-1), id.u.string);
+    id.select = VIRTIO_INPUT_CFG_ID_NAME;
+    id.size = strlen(id.u.string);
+    virtio_input_add_config(vinput, &id);
+
+    virtio_input_bits_config(vih, EV_KEY, KEY_CNT);
+    virtio_input_bits_config(vih, EV_REL, REL_CNT);
+    virtio_input_bits_config(vih, EV_ABS, ABS_CNT);
+    virtio_input_bits_config(vih, EV_MSC, MSC_CNT);
+    virtio_input_bits_config(vih, EV_SW,  SW_CNT);
+
+    qemu_set_fd_handler(vih->fd, virtio_input_host_event, NULL, vih);
+    return;
+
+err_close:
+    close(vih->fd);
+    vih->fd = -1;
+    return;
+}
+
+static void virtio_input_host_unrealize(DeviceState *dev, Error **errp)
+{
+    VirtIOInputHost *vih = VIRTIO_INPUT_HOST(dev);
+
+    if (vih->fd > 0) {
+        qemu_set_fd_handler(vih->fd, NULL, NULL, NULL);
+        close(vih->fd);
+    }
+}
+
+static const VMStateDescription vmstate_virtio_input_host = {
+    .name = "virtio-input-host",
+    .unmigratable = 1,
+};
+
+static void virtio_input_host_class_init(ObjectClass *klass, void *data)
+{
+    VirtIOInputClass *vic = VIRTIO_INPUT_CLASS(klass);
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->vmsd           = &vmstate_virtio_input_host;
+    vic->realize       = virtio_input_host_realize;
+    vic->unrealize     = virtio_input_host_unrealize;
+}
+
+static void virtio_input_host_init(Object *obj)
+{
+    VirtIOInput *vinput = VIRTIO_INPUT(obj);
+
+    virtio_input_init_config(vinput, virtio_input_host_config);
+}
+
+static const TypeInfo virtio_input_host_info = {
+    .name          = TYPE_VIRTIO_INPUT_HOST,
+    .parent        = TYPE_VIRTIO_INPUT,
+    .instance_size = sizeof(VirtIOInputHost),
+    .instance_init = virtio_input_host_init,
+    .class_init    = virtio_input_host_class_init,
+};
+
+/* ----------------------------------------------------------------- */
+
+static void virtio_register_types(void)
+{
+    type_register_static(&virtio_input_host_info);
+}
+
+type_init(virtio_register_types)
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index b421c01..b6be1f7 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1541,6 +1541,14 @@ static Property virtio_input_hid_pci_properties[] = {
     DEFINE_PROP_END_OF_LIST(),
 };
 
+static Property virtio_input_host_pci_properties[] = {
+    DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
+    DEFINE_VIRTIO_INPUT_PROPERTIES(VirtIOInputPCI, vdev.input),
+    DEFINE_PROP_STRING("evdev", VirtIOInputHostPCI, vdev.evdev),
+    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static int virtio_input_pci_init(VirtIOPCIProxy *vpci_dev)
 {
     VirtIOInputPCI *vinput = VIRTIO_INPUT_PCI(vpci_dev);
@@ -1572,6 +1580,13 @@ static void virtio_input_hid_pci_class_init(ObjectClass *klass, void *data)
     dc->props = virtio_input_hid_pci_properties;
 }
 
+static void virtio_input_host_pci_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->props = virtio_input_host_pci_properties;
+}
+
 static void virtio_keyboard_initfn(Object *obj)
 {
     VirtIOInputHIDPCI *dev = VIRTIO_INPUT_HID_PCI(obj);
@@ -1593,6 +1608,13 @@ static void virtio_tablet_initfn(Object *obj)
     object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
 }
 
+static void virtio_host_initfn(Object *obj)
+{
+    VirtIOInputHostPCI *dev = VIRTIO_INPUT_HOST_PCI(obj);
+    object_initialize(&dev->vdev, sizeof(dev->vdev), TYPE_VIRTIO_INPUT_HOST);
+    object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
+}
+
 static const TypeInfo virtio_input_pci_info = {
     .name          = TYPE_VIRTIO_INPUT_PCI,
     .parent        = TYPE_VIRTIO_PCI,
@@ -1630,6 +1652,14 @@ static const TypeInfo virtio_tablet_pci_info = {
     .instance_init = virtio_tablet_initfn,
 };
 
+static const TypeInfo virtio_host_pci_info = {
+    .name          = TYPE_VIRTIO_INPUT_HOST_PCI,
+    .parent        = TYPE_VIRTIO_INPUT_PCI,
+    .instance_size = sizeof(VirtIOInputHostPCI),
+    .instance_init = virtio_host_initfn,
+    .class_init    = virtio_input_host_pci_class_init,
+};
+
 /* virtio-pci-bus */
 
 static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
@@ -1679,6 +1709,7 @@ static void virtio_pci_register_types(void)
     type_register_static(&virtio_keyboard_pci_info);
     type_register_static(&virtio_mouse_pci_info);
     type_register_static(&virtio_tablet_pci_info);
+    type_register_static(&virtio_host_pci_info);
     type_register_static(&virtio_pci_bus_info);
     type_register_static(&virtio_pci_info);
 #ifdef CONFIG_VIRTFS
diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h
index f615ae6..d0b7f10 100644
--- a/hw/virtio/virtio-pci.h
+++ b/hw/virtio/virtio-pci.h
@@ -42,6 +42,7 @@ typedef struct VHostSCSIPCI VHostSCSIPCI;
 typedef struct VirtIORngPCI VirtIORngPCI;
 typedef struct VirtIOInputPCI VirtIOInputPCI;
 typedef struct VirtIOInputHIDPCI VirtIOInputHIDPCI;
+typedef struct VirtIOInputHostPCI VirtIOInputHostPCI;
 
 /* virtio-pci-bus */
 
@@ -226,6 +227,15 @@ struct VirtIOInputHIDPCI {
     VirtIOInputHID vdev;
 };
 
+#define TYPE_VIRTIO_INPUT_HOST_PCI "virtio-input-host-pci"
+#define VIRTIO_INPUT_HOST_PCI(obj) \
+        OBJECT_CHECK(VirtIOInputHostPCI, (obj), TYPE_VIRTIO_INPUT_HOST_PCI)
+
+struct VirtIOInputHostPCI {
+    VirtIOPCIProxy parent_obj;
+    VirtIOInputHost vdev;
+};
+
 /* Virtio ABI version, if we increment this, we break the guest driver. */
 #define VIRTIO_PCI_ABI_VERSION          0
 
diff --git a/include/hw/virtio/virtio-input.h b/include/hw/virtio/virtio-input.h
index ca5bcee..eb870bb 100644
--- a/include/hw/virtio/virtio-input.h
+++ b/include/hw/virtio/virtio-input.h
@@ -66,6 +66,12 @@ typedef struct virtio_input_event {
 #define VIRTIO_INPUT_HID_GET_PARENT_CLASS(obj) \
         OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HID)
 
+#define TYPE_VIRTIO_INPUT_HOST   "virtio-input-host"
+#define VIRTIO_INPUT_HOST(obj) \
+        OBJECT_CHECK(VirtIOInputHost, (obj), TYPE_VIRTIO_INPUT_HOST)
+#define VIRTIO_INPUT_HOST_GET_PARENT_CLASS(obj) \
+        OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_INPUT_HOST)
+
 #define DEFINE_VIRTIO_INPUT_PROPERTIES(_state, _field)       \
         DEFINE_PROP_STRING("serial", _state, _field.serial)
 
@@ -73,6 +79,7 @@ typedef struct VirtIOInput VirtIOInput;
 typedef struct VirtIOInputClass VirtIOInputClass;
 typedef struct VirtIOInputConfig VirtIOInputConfig;
 typedef struct VirtIOInputHID VirtIOInputHID;
+typedef struct VirtIOInputHost VirtIOInputHost;
 
 struct virtio_input_conf {
     char *serial;
@@ -116,6 +123,12 @@ struct VirtIOInputHID {
     int                               ledstate;
 };
 
+struct VirtIOInputHost {
+    VirtIOInput                       parent_obj;
+    char                              *evdev;
+    int                               fd;
+};
+
 void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event);
 void virtio_input_init_config(VirtIOInput *vinput,
                               virtio_input_config *config);
-- 
1.8.3.1

^ permalink raw reply related	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2014-06-03  8:51 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-06-03  8:42 [Qemu-devel] [PATCH 0/4] input: add virtio input devices Gerd Hoffmann
2014-06-03  8:42 ` [Qemu-devel] [PATCH 1/4] pci: add virtio input pci device id Gerd Hoffmann
2014-06-03  8:42 ` [Qemu-devel] [PATCH 2/4] virtio-input: core code & base class Gerd Hoffmann
2014-06-03  8:42 ` [Qemu-devel] [PATCH 3/4] virtio-input: emulated devices Gerd Hoffmann
2014-06-03  8:42 ` [Qemu-devel] [PATCH 4/4] virtio-input: evdev passthrough Gerd Hoffmann

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