Merge remote-tracking branch 'remotes/kraxel/tags/pull-input-20160413-1' into staging

virtio-input; live migration support, various bugfixes.

# gpg: Signature made Wed 13 Apr 2016 16:41:27 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-input-20160413-1:
  virtio-input: support absolute axis config in pass-through
  input-linux: refine mouse detection
  virtio-input: fix emulated tablet axis ranges
  virtio-input: add live migration support
  virtio-input: implement pass-through evdev writes
  virtio-input: retrieve EV_LED host config bits
  virtio-input: add missing key mappings
  move const_le{16, 23} to qemu/bswap.h, add comment
  virtio-input: add parenthesis to const_le{16, 32}

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3 files changed, 115 insertions, 7 deletions

diff --git a/hw/input/virtio-input-hid.c b/hw/input/virtio-input-hid.c
index 5d12157114..3ee0c1814a 100644
--- a/hw/input/virtio-input-hid.c
+++ b/hw/input/virtio-input-hid.c
@@ -121,6 +121,8 @@ static const unsigned int keymap_qcode[Q_KEY_CODE__MAX] = {
 
     [Q_KEY_CODE_CTRL_R]              = KEY_RIGHTCTRL,
     [Q_KEY_CODE_SYSRQ]               = KEY_SYSRQ,
+    [Q_KEY_CODE_PRINT]               = KEY_SYSRQ,
+    [Q_KEY_CODE_PAUSE]               = KEY_PAUSE,
     [Q_KEY_CODE_ALT_R]               = KEY_RIGHTALT,
 
     [Q_KEY_CODE_HOME]                = KEY_HOME,
@@ -482,12 +484,12 @@ static struct virtio_input_config virtio_tablet_config[] = {
         .select    = VIRTIO_INPUT_CFG_ABS_INFO,
         .subsel    = ABS_X,
         .size      = sizeof(virtio_input_absinfo),
-        .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE),
+        .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE - 1),
     },{
         .select    = VIRTIO_INPUT_CFG_ABS_INFO,
         .subsel    = ABS_Y,
         .size      = sizeof(virtio_input_absinfo),
-        .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE),
+        .u.abs.max = const_le32(INPUT_EVENT_ABS_SIZE - 1),
     },
     { /* end of list */ },
 };
diff --git a/hw/input/virtio-input-host.c b/hw/input/virtio-input-host.c
index 9e0f46d88f..cb79e80024 100644
--- a/hw/input/virtio-input-host.c
+++ b/hw/input/virtio-input-host.c
@@ -70,13 +70,39 @@ static void virtio_input_bits_config(VirtIOInputHost *vih,
     virtio_input_add_config(VIRTIO_INPUT(vih), &bits);
 }
 
+static void virtio_input_abs_config(VirtIOInputHost *vih, int axis)
+{
+    virtio_input_config config;
+    struct input_absinfo absinfo;
+    int rc;
+
+    rc = ioctl(vih->fd, EVIOCGABS(axis), &absinfo);
+    if (rc < 0) {
+        return;
+    }
+
+    memset(&config, 0, sizeof(config));
+    config.select = VIRTIO_INPUT_CFG_ABS_INFO;
+    config.subsel = axis;
+    config.size   = sizeof(virtio_input_absinfo);
+
+    config.u.abs.min  = cpu_to_le32(absinfo.minimum);
+    config.u.abs.max  = cpu_to_le32(absinfo.maximum);
+    config.u.abs.fuzz = cpu_to_le32(absinfo.fuzz);
+    config.u.abs.flat = cpu_to_le32(absinfo.flat);
+    config.u.abs.res  = cpu_to_le32(absinfo.resolution);
+
+    virtio_input_add_config(VIRTIO_INPUT(vih), &config);
+}
+
 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;
+    virtio_input_config id, *abs;
     struct input_id ids;
-    int rc, ver;
+    int rc, ver, i, axis;
+    uint8_t byte;
 
     if (!vih->evdev) {
         error_setg(errp, "evdev property is required");
@@ -125,6 +151,23 @@ static void virtio_input_host_realize(DeviceState *dev, Error **errp)
     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);
+    virtio_input_bits_config(vih, EV_LED, LED_CNT);
+
+    abs = virtio_input_find_config(VIRTIO_INPUT(vih),
+        VIRTIO_INPUT_CFG_EV_BITS, EV_ABS);
+    if (abs) {
+        for (i = 0; i < abs->size; i++) {
+            byte = abs->u.bitmap[i];
+            axis = 8 * i;
+            while (byte) {
+                if (byte & 1) {
+                    virtio_input_abs_config(vih, axis);
+                }
+                axis++;
+                byte >>= 1;
+            }
+        }
+    }
 
     qemu_set_fd_handler(vih->fd, virtio_input_host_event, NULL, vih);
     return;
@@ -145,6 +188,28 @@ static void virtio_input_host_unrealize(DeviceState *dev, Error **errp)
     }
 }
 
+static void virtio_input_host_handle_status(VirtIOInput *vinput,
+                                            virtio_input_event *event)
+{
+    VirtIOInputHost *vih = VIRTIO_INPUT_HOST(vinput);
+    struct input_event evdev;
+    int rc;
+
+    if (gettimeofday(&evdev.time, NULL)) {
+        perror("virtio_input_host_handle_status: gettimeofday");
+        return;
+    }
+
+    evdev.type = le16_to_cpu(event->type);
+    evdev.code = le16_to_cpu(event->code);
+    evdev.value = le32_to_cpu(event->value);
+
+    rc = write(vih->fd, &evdev, sizeof(evdev));
+    if (rc == -1) {
+        perror("virtio_input_host_handle_status: write");
+    }
+}
+
 static const VMStateDescription vmstate_virtio_input_host = {
     .name = "virtio-input-host",
     .unmigratable = 1,
@@ -164,6 +229,7 @@ static void virtio_input_host_class_init(ObjectClass *klass, void *data)
     dc->props          = virtio_input_host_properties;
     vic->realize       = virtio_input_host_realize;
     vic->unrealize     = virtio_input_host_unrealize;
+    vic->handle_status = virtio_input_host_handle_status;
 }
 
 static void virtio_input_host_init(Object *obj)
diff --git a/hw/input/virtio-input.c b/hw/input/virtio-input.c
index 672c207eb5..f59749a943 100644
--- a/hw/input/virtio-input.c
+++ b/hw/input/virtio-input.c
@@ -14,6 +14,8 @@
 
 #include "standard-headers/linux/input.h"
 
+#define VIRTIO_INPUT_VM_VERSION 1
+
 /* ----------------------------------------------------------------- */
 
 void virtio_input_send(VirtIOInput *vinput, virtio_input_event *event)
@@ -97,9 +99,9 @@ static void virtio_input_handle_sts(VirtIODevice *vdev, VirtQueue *vq)
     virtio_notify(vdev, vinput->sts);
 }
 
-static virtio_input_config *virtio_input_find_config(VirtIOInput *vinput,
-                                                     uint8_t select,
-                                                     uint8_t subsel)
+virtio_input_config *virtio_input_find_config(VirtIOInput *vinput,
+                                              uint8_t select,
+                                              uint8_t subsel)
 {
     VirtIOInputConfig *cfg;
 
@@ -214,6 +216,38 @@ static void virtio_input_reset(VirtIODevice *vdev)
     }
 }
 
+static void virtio_input_save(QEMUFile *f, void *opaque)
+{
+    VirtIOInput *vinput = opaque;
+    VirtIODevice *vdev = VIRTIO_DEVICE(vinput);
+
+    virtio_save(vdev, f);
+}
+
+static int virtio_input_load(QEMUFile *f, void *opaque, int version_id)
+{
+    VirtIOInput *vinput = opaque;
+    VirtIOInputClass *vic = VIRTIO_INPUT_GET_CLASS(vinput);
+    VirtIODevice *vdev = VIRTIO_DEVICE(vinput);
+    int ret;
+
+    if (version_id != VIRTIO_INPUT_VM_VERSION) {
+        return -EINVAL;
+    }
+
+    ret = virtio_load(vdev, f, version_id);
+    if (ret) {
+        return ret;
+    }
+
+    /* post_load() */
+    vinput->active = vdev->status & VIRTIO_CONFIG_S_DRIVER_OK;
+    if (vic->change_active) {
+        vic->change_active(vinput);
+    }
+    return 0;
+}
+
 static void virtio_input_device_realize(DeviceState *dev, Error **errp)
 {
     VirtIOInputClass *vic = VIRTIO_INPUT_GET_CLASS(dev);
@@ -245,14 +279,20 @@ static void virtio_input_device_realize(DeviceState *dev, Error **errp)
                 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);
+
+    register_savevm(dev, "virtio-input", -1, VIRTIO_INPUT_VM_VERSION,
+                    virtio_input_save, virtio_input_load, vinput);
 }
 
 static void virtio_input_device_unrealize(DeviceState *dev, Error **errp)
 {
     VirtIOInputClass *vic = VIRTIO_INPUT_GET_CLASS(dev);
     VirtIODevice *vdev = VIRTIO_DEVICE(dev);
+    VirtIOInput *vinput = VIRTIO_INPUT(dev);
     Error *local_err = NULL;
 
+    unregister_savevm(dev, "virtio-input", vinput);
+
     if (vic->unrealize) {
         vic->unrealize(dev, &local_err);
         if (local_err) {