usbredir: Add support for buffered bulk input (v2)

Buffered bulk mode is intended for bulk *input* endpoints, where the data is
of a streaming nature (not part of a command-response protocol). These
endpoints' input buffer may overflow if data is not read quickly enough.
So in buffered bulk mode the usb-host takes care of the submitting and
re-submitting of bulk transfers.

Buffered bulk mode is necessary for reliable operation with the bulk in
endpoints of usb to serial convertors. Unfortunatelty buffered bulk input
mode will only work with certain devices, therefor this patch also adds a
usb-id table to enable it for devices which need it, while leaving the
bulk ep handling for other devices unmodified.

Note that the bumping of the required usbredir from 0.5.3 to 0.6 does
not mean that we will now need a newer usbredir release then qemu-1.3,
.pc files reporting 0.5.3 have only ever existed in usbredir builds directly
from git, so qemu-1.3 needs the 0.6 release too.

Changes in v2:
-Split of quirk handling into quirks.c

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/hw/usb.h b/hw/usb.h
index aca8ff6950..50c297f341 100644
--- a/hw/usb.h
+++ b/hw/usb.h
@@ -553,5 +553,15 @@ const USBDesc *usb_device_get_usb_desc(USBDevice *dev);
 
 int ehci_create_ich9_with_companions(PCIBus *bus, int slot);
 
-#endif
+/* quirks.c */
+
+/* In bulk endpoints are streaming data sources (iow behave like isoc eps) */
+#define USB_QUIRK_BUFFER_BULK_IN	0x01
+/* Bulk pkts in FTDI format, need special handling when combining packets */
+#define USB_QUIRK_IS_FTDI		0x02
 
+int usb_get_quirks(uint16_t vendor_id, uint16_t product_id,
+                   uint8_t interface_class, uint8_t interface_subclass,
+                   uint8_t interface_protocol);
+
+#endif