From e983395d30d1d5bfa0ed3ae9c028c130f7c498cc Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Thu, 23 Aug 2012 13:30:13 +0200 Subject: usb: unique packet ids This patch adds IDs to usb packets. Those IDs are (a) supposed to be unique for the lifecycle of a packet (from packet setup until the packet is either completed or canceled) and (b) stable across migration. uhci, ohci, ehci and xhci use the guest physical address of the transfer descriptor for this. musb needs a different approach because there is no transfer descriptor. But musb also doesn't support pipelining, so we have never more than one packet per endpoint in flight. So we go create an ID based on endpoint and device address. Signed-off-by: Gerd Hoffmann --- hw/usb/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'hw/usb/core.c') diff --git a/hw/usb/core.c b/hw/usb/core.c index 28b840e52d..2da38e7fd0 100644 --- a/hw/usb/core.c +++ b/hw/usb/core.c @@ -520,10 +520,11 @@ void usb_packet_set_state(USBPacket *p, USBPacketState state) p->state = state; } -void usb_packet_setup(USBPacket *p, int pid, USBEndpoint *ep) +void usb_packet_setup(USBPacket *p, int pid, USBEndpoint *ep, uint64_t id) { assert(!usb_packet_is_inflight(p)); assert(p->iov.iov != NULL); + p->id = id; p->pid = pid; p->ep = ep; p->result = 0; -- cgit v1.2.1