[Qemu-devel] [PATCH 31/36] uhci: Use only one queue for ctrl endpoints

[Gerd Hoffmann <kraxel@redhat.com>]

From: Hans de Goede <hdegoede@redhat.com>

ctrl endpoints use different pids for different phases of a control
transfer, this patch makes us use only one queue for a ctrl ep, rather
then 3.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/usb/hcd-uhci.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/hw/usb/hcd-uhci.c b/hw/usb/hcd-uhci.c
index a9e06ef..b6b972f 100644
--- a/hw/usb/hcd-uhci.c
+++ b/hw/usb/hcd-uhci.c
@@ -167,8 +167,13 @@ static void uhci_queue_fill(UHCIQueue *q, UHCI_TD *td);
 
 static inline int32_t uhci_queue_token(UHCI_TD *td)
 {
-    /* covers ep, dev, pid -> identifies the endpoint */
-    return td->token & 0x7ffff;
+    if ((td->token & (0xf << 15)) == 0) {
+        /* ctrl ep, cover ep and dev, not pid! */
+        return td->token & 0x7ff00;
+    } else {
+        /* covers ep, dev, pid -> identifies the endpoint */
+        return td->token & 0x7ffff;
+    }
 }
 
 static UHCIQueue *uhci_queue_new(UHCIState *s, uint32_t qh_addr, UHCI_TD *td,
-- 
1.7.1