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xhci: Add a xhci_ep_nuke_one_xfer helper function 

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Hans de Goede 2012-10-24 18:14:05 +02:00 committed by Gerd Hoffmann
parent b4ea866499
commit 3151f2096d
1 changed files with 30 additions and 19 deletions
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49
hw/usb/hcd-xhci.c
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@ -1082,6 +1082,35 @@ static TRBCCode xhci_enable_ep(XHCIState *xhci, unsigned int slotid,
return CC_SUCCESS;
}
static int xhci_ep_nuke_one_xfer(XHCITransfer *t)
{
int killed = 0;
if (t->running_async) {
usb_cancel_packet(&t->packet);
t->running_async = 0;
t->cancelled = 1;
DPRINTF("xhci: cancelling transfer, waiting for it to complete\n");
killed = 1;
}
if (t->running_retry) {
XHCIEPContext *epctx = t->xhci->slots[t->slotid-1].eps[t->epid-1];
if (epctx) {
epctx->retry = NULL;
qemu_del_timer(epctx->kick_timer);
}
t->running_retry = 0;
}
if (t->trbs) {
g_free(t->trbs);
}
t->trbs = NULL;
t->trb_count = t->trb_alloced = 0;
return killed;
}
static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid,
unsigned int epid)
{
@ -1103,25 +1132,7 @@ static int xhci_ep_nuke_xfers(XHCIState *xhci, unsigned int slotid,
xferi = epctx->next_xfer;
for (i = 0; i < TD_QUEUE; i++) {
XHCITransfer *t = &epctx->transfers[xferi];
if (t->running_async) {
usb_cancel_packet(&t->packet);
t->running_async = 0;
t->cancelled = 1;
DPRINTF("xhci: cancelling transfer %d, waiting for it to complete...\n", i);
killed++;
}
if (t->running_retry) {
t->running_retry = 0;
epctx->retry = NULL;
qemu_del_timer(epctx->kick_timer);
}
if (t->trbs) {
g_free(t->trbs);
}
t->trbs = NULL;
t->trb_count = t->trb_alloced = 0;
killed += xhci_ep_nuke_one_xfer(&epctx->transfers[xferi]);
xferi = (xferi + 1) % TD_QUEUE;
}
return killed;