qemu/0138-ehci-Add-some-additional-ehci_trace_guest_bug-calls.patch

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2012-10-28 18:05:07 +00:00
From 9dc252544b41a626bbdf436a3e6f229fa0014143 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Mon, 3 Sep 2012 10:22:16 +0200
2012-10-28 18:05:07 +00:00
Subject: [PATCH] ehci: Add some additional ehci_trace_guest_bug() calls
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-10-28 18:05:07 +00:00
(cherry picked from commit 3a8ca08e01ea4baafff2a513655008cdd00feebf)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
hw/usb/hcd-ehci.c | 19 +++++++++++++------
1 file changed, 13 insertions(+), 6 deletions(-)
diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index 398f5e0..5a88268 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -820,12 +820,16 @@ static int ehci_reset_queue(EHCIQueue *q)
return packets;
}
-static void ehci_free_queue(EHCIQueue *q)
+static void ehci_free_queue(EHCIQueue *q, const char *warn)
{
EHCIQueueHead *head = q->async ? &q->ehci->aqueues : &q->ehci->pqueues;
+ int cancelled;
trace_usb_ehci_queue_action(q, "free");
- ehci_cancel_queue(q);
+ cancelled = ehci_cancel_queue(q);
+ if (warn && cancelled > 0) {
+ ehci_trace_guest_bug(q->ehci, warn);
+ }
QTAILQ_REMOVE(head, q, next);
g_free(q);
}
@@ -847,6 +851,7 @@ static EHCIQueue *ehci_find_queue_by_qh(EHCIState *ehci, uint32_t addr,
static void ehci_queues_rip_unused(EHCIState *ehci, int async, int flush)
{
EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
+ const char *warn = (async && !flush) ? "guest unlinked busy QH" : NULL;
uint64_t maxage = FRAME_TIMER_NS * ehci->maxframes * 4;
EHCIQueue *q, *tmp;
@@ -859,7 +864,7 @@ static void ehci_queues_rip_unused(EHCIState *ehci, int async, int flush)
if (!flush && ehci->last_run_ns < q->ts + maxage) {
continue;
}
- ehci_free_queue(q);
+ ehci_free_queue(q, warn);
}
}
@@ -872,17 +877,18 @@ static void ehci_queues_rip_device(EHCIState *ehci, USBDevice *dev, int async)
if (q->dev != dev) {
continue;
}
- ehci_free_queue(q);
+ ehci_free_queue(q, NULL);
}
}
static void ehci_queues_rip_all(EHCIState *ehci, int async)
{
EHCIQueueHead *head = async ? &ehci->aqueues : &ehci->pqueues;
+ const char *warn = async ? "guest stopped busy async schedule" : NULL;
EHCIQueue *q, *tmp;
QTAILQ_FOREACH_SAFE(q, head, next, tmp) {
- ehci_free_queue(q);
+ ehci_free_queue(q, warn);
}
}
@@ -1549,7 +1555,8 @@ static int ehci_execute(EHCIPacket *p, const char *action)
p->tbytes = (p->qtd.token & QTD_TOKEN_TBYTES_MASK) >> QTD_TOKEN_TBYTES_SH;
if (p->tbytes > BUFF_SIZE) {
- fprintf(stderr, "Request for more bytes than allowed\n");
+ ehci_trace_guest_bug(p->queue->ehci,
+ "guest requested more bytes than allowed");
return USB_RET_PROCERR;
}
--
1.8.0.2