From 8beba9304391189666df1b62b23a5101b3831317 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Sat, 17 Nov 2012 12:47:14 +0100
Subject: usb: Call wakeup when data becomes available for all devices with int
 eps

This is necessary for proper interaction with the xhci controller, and it
will allow other hcds to lower there frame timer while waiting for interrupt
data.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/usb/dev-hub.c     | 2 ++
 hw/usb/dev-network.c | 7 +++++++
 hw/usb/dev-wacom.c   | 4 ++++
 hw/usb/redirect.c    | 4 ++++
 4 files changed, 17 insertions(+)

diff --git a/hw/usb/dev-hub.c b/hw/usb/dev-hub.c
index 9ee60dd412..470fbbb86c 100644
--- a/hw/usb/dev-hub.c
+++ b/hw/usb/dev-hub.c
@@ -184,6 +184,7 @@ static void usb_hub_detach(USBPort *port1)
         port->wPortStatus &= ~PORT_STAT_ENABLE;
         port->wPortChange |= PORT_STAT_C_ENABLE;
     }
+    usb_wakeup(s->intr);
 }
 
 static void usb_hub_child_detach(USBPort *port1, USBDevice *child)
@@ -363,6 +364,7 @@ static void usb_hub_handle_control(USBDevice *dev, USBPacket *p,
                     port->wPortChange |= PORT_STAT_C_RESET;
                     /* set enable bit */
                     port->wPortStatus |= PORT_STAT_ENABLE;
+                    usb_wakeup(s->intr);
                 }
                 break;
             case PORT_POWER:
diff --git a/hw/usb/dev-network.c b/hw/usb/dev-network.c
index 14d9e5aa5b..30cb03373e 100644
--- a/hw/usb/dev-network.c
+++ b/hw/usb/dev-network.c
@@ -639,6 +639,8 @@ typedef struct USBNetState {
     unsigned int in_ptr, in_len;
     uint8_t in_buf[2048];
 
+    USBEndpoint *intr;
+
     char usbstring_mac[13];
     NICState *nic;
     NICConf conf;
@@ -851,6 +853,10 @@ static void *rndis_queue_response(USBNetState *s, unsigned int length)
     struct rndis_response *r =
             g_malloc0(sizeof(struct rndis_response) + length);
 
+    if (QTAILQ_EMPTY(&s->rndis_resp)) {
+        usb_wakeup(s->intr);
+    }
+
     QTAILQ_INSERT_TAIL(&s->rndis_resp, r, entries);
     r->length = length;
 
@@ -1349,6 +1355,7 @@ static int usb_net_initfn(USBDevice *dev)
     s->media_state = 0;	/* NDIS_MEDIA_STATE_CONNECTED */;
     s->filter = 0;
     s->vendorid = 0x1234;
+    s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
 
     qemu_macaddr_default_if_unset(&s->conf.macaddr);
     s->nic = qemu_new_nic(&net_usbnet_info, &s->conf,
diff --git a/hw/usb/dev-wacom.c b/hw/usb/dev-wacom.c
index 08b416daa6..f7342b08c3 100644
--- a/hw/usb/dev-wacom.c
+++ b/hw/usb/dev-wacom.c
@@ -43,6 +43,7 @@
 
 typedef struct USBWacomState {
     USBDevice dev;
+    USBEndpoint *intr;
     QEMUPutMouseEntry *eh_entry;
     int dx, dy, dz, buttons_state;
     int x, y;
@@ -137,6 +138,7 @@ static void usb_mouse_event(void *opaque,
     s->dz += dz1;
     s->buttons_state = buttons_state;
     s->changed = 1;
+    usb_wakeup(s->intr);
 }
 
 static void usb_wacom_event(void *opaque,
@@ -150,6 +152,7 @@ static void usb_wacom_event(void *opaque,
     s->dz += dz;
     s->buttons_state = buttons_state;
     s->changed = 1;
+    usb_wakeup(s->intr);
 }
 
 static inline int int_clamp(int val, int vmin, int vmax)
@@ -337,6 +340,7 @@ static int usb_wacom_initfn(USBDevice *dev)
     USBWacomState *s = DO_UPCAST(USBWacomState, dev, dev);
     usb_desc_create_serial(dev);
     usb_desc_init(dev);
+    s->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
     s->changed = 1;
     return 0;
 }
diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c
index 490c90fae1..9e7f6453f7 100644
--- a/hw/usb/redirect.c
+++ b/hw/usb/redirect.c
@@ -1644,6 +1644,10 @@ static void usbredir_interrupt_packet(void *priv, uint64_t id,
             return;
         }
 
+        if (QTAILQ_EMPTY(&dev->endpoint[EP2I(ep)].bufpq)) {
+            usb_wakeup(usb_ep_get(&dev->dev, USB_TOKEN_IN, ep & 0x0f));
+        }
+
         /* bufp_alloc also adds the packet to the ep queue */
         bufp_alloc(dev, data, data_len, interrupt_packet->status, ep);
     } else {
-- 
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