usb-host: map LIBUSB_SPEED_SUPER_PLUS to USB_SPEED_SUPER

Handle host superspeedplus (usb 3.1+) devices like superspeed (usb 3.0)
devices.  That is enough to get them handled properly by xhci.  They show
up as superspeed devices inside the guest, but should be able to actually
run at higher speeds.

Reported-by: Angel Pagan <Angel.Pagan@stratus.com>
Tested-by: Angel Pagan <Angel.Pagan@stratus.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20210121150832.3564097-1-kraxel@redhat.com>

hw/usb/host-libusb.c

@@ -179,6 +179,9 @@ static void usb_host_attach_kernel(USBHostDevice *s);
 #if LIBUSB_API_VERSION >= 0x01000103
 # define HAVE_STREAMS 1
 #endif
+#if LIBUSB_API_VERSION >= 0x01000106
+# define HAVE_SUPER_PLUS 1
+#endif
 
 static const char *speed_name[] = {
     [LIBUSB_SPEED_UNKNOWN] = "?",
@@ -186,6 +189,9 @@ static const char *speed_name[] = {
     [LIBUSB_SPEED_FULL]    = "12",
     [LIBUSB_SPEED_HIGH]    = "480",
     [LIBUSB_SPEED_SUPER]   = "5000",
+#ifdef HAVE_SUPER_PLUS
+    [LIBUSB_SPEED_SUPER_PLUS] = "5000+",
+#endif
 };
 
 static const unsigned int speed_map[] = {
@@ -193,6 +199,9 @@ static const unsigned int speed_map[] = {
     [LIBUSB_SPEED_FULL]    = USB_SPEED_FULL,
     [LIBUSB_SPEED_HIGH]    = USB_SPEED_HIGH,
     [LIBUSB_SPEED_SUPER]   = USB_SPEED_SUPER,
+#ifdef HAVE_SUPER_PLUS
+    [LIBUSB_SPEED_SUPER_PLUS] = USB_SPEED_SUPER,
+#endif
 };
 
 static const unsigned int status_map[] = {
@@ -964,8 +973,14 @@ static int usb_host_open(USBHostDevice *s, libusb_device *dev, int hostfd)
             libusb_speed = LIBUSB_SPEED_HIGH;
             break;
         case 5: /* super */
+            libusb_speed = LIBUSB_SPEED_SUPER;
+            break;
         case 6: /* super plus */
+#ifdef HAVE_SUPER_PLUS
+            libusb_speed = LIBUSB_SPEED_SUPER_PLUS;
+#else
             libusb_speed = LIBUSB_SPEED_SUPER;
+#endif
             break;
         }
     }