[Xen-users] RE: USB floppy issue in Xen 3.4

["Patro, Sumant" <Sumant.Patro@xxxxxxx>]

Hello,

        I tried with the below patch to access the USB floppy in GOS. With this 
patch, the yellow bang in Device Manager does not appear, however, the device 
(a:) is not shown by the Windows Guest.

        Any pointers on what could be wrong or workaround to access the USB 
floppy ?

Regards,

Sumant

diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c
index d42d394..70ed338 100644
--- a/hw/usb-uhci.c
+++ b/hw/usb-uhci.c
@@ -794,7 +794,7 @@ static int uhci_handle_td(UHCIState *s, uint32_t addr, 
UHCI_TD *td, uint32_t *in
     if (!async)
         return 1;
 
-    async->valid = 10;
+    async->valid = 32;
     async->td    = addr;
     async->token = td->token;
 
diff --git a/hw/usb.c b/hw/usb.c
diff --git a/usb-linux.c b/usb-linux.c
index 5dfed8c..f8046ba 100644
--- a/usb-linux.c
+++ b/usb-linux.c
@@ -144,6 +144,10 @@ static int is_isoc(USBHostDevice *s, int ep)
 {
     return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO;
 }
+static int is_intr(USBHostDevice *s, int ep)
+{
+    return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_INTERRUPT;
+}
 
 static int is_halted(USBHostDevice *s, int ep)
 {
@@ -274,7 +278,6 @@ static void async_complete(void *opaque)
                 if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL)
                     async_complete_ctrl(s, p);
                 break;
-
             case -EPIPE:
                 set_halt(s, p->devep);
                 /* fall through */
@@ -472,6 +475,9 @@ static int usb_host_handle_data(USBHostDevice *s, USBPacket 
*p)
         urb->flags    = USBDEVFS_URB_ISO_ASAP;
         urb->number_of_packets = 1;
         urb->iso_frame_desc[0].length = p->len;
+    } else if (is_intr(s, p->devep)) {
+        /* Setup interrupt transfer */
+        urb->type     = USBDEVFS_URB_TYPE_INTERRUPT;
     } else {
         /* Setup bulk transfer */
         urb->type     = USBDEVFS_URB_TYPE_BULK;





-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Patro, Sumant
Sent: Friday, May 15, 2009 11:50 AM
To: xen-devel@xxxxxxxxxxxxxxxxxxx; 'xen-users@xxxxxxxxxxxxxxxxxxx'
Subject: [Xen-devel] USB floppy issue in Xen 3.4

Hello,

        I want to access USB floppy from HVM guest (Windows, Linux) using Xen 
3.4. I checked with the version 3.4.0-rc4-pre. I have tried with USB floppy 
drives from three different vendors. The device is not accessible in both 
Windows and Linux.
 
        I have usb and usbdevice entry in the HVM config file. The device is 
listed in Windows Device Manager with a yellow bang. In RHEL 5.3 guest lsusb 
displays it, but is not associated with a device name. The same device works 
fine in Xen 3.3.
     
      Is there any workaround/fix for this in Xen 3.4?

Regards,

Sumant

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