diff options
| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-01-23 14:20:19 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-25 11:00:01 +0100 |
| commit | a37c3f76e6a6b5eabacb1364c2218b0daafab18a (patch) | |
| tree | 39dab93b9b972af03c3820d43f2f195dbefdd0ff /drivers/usb/host/xhci-ring.c | |
| parent | ed6d643b14e7bc2fac794a0bbac7dd742ca2ed80 (diff) | |
usb: host: xhci: make a generic TRB tracer
instead of having a tracer that can only trace command completions,
let's promote this tracer so it can trace and decode any TRB.
With that, it will be easier to extrapolate the lifetime of any TRB
which might help debugging certain issues.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-ring.c')
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 059825bf4b26..4316273c272b 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1319,6 +1319,9 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, cmd_dma = le64_to_cpu(event->cmd_trb); cmd_trb = xhci->cmd_ring->dequeue; + + trace_xhci_handle_command(xhci->cmd_ring, &cmd_trb->generic); + cmd_dequeue_dma = xhci_trb_virt_to_dma(xhci->cmd_ring->deq_seg, cmd_trb); /* @@ -1335,8 +1338,6 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, cancel_delayed_work(&xhci->cmd_timer); - trace_xhci_cmd_completion(cmd_trb, (struct xhci_generic_trb *) event); - cmd_comp_code = GET_COMP_CODE(le32_to_cpu(event->status)); /* If CMD ring stopped we own the trbs between enqueue and dequeue */ @@ -2479,6 +2480,10 @@ static int handle_tx_event(struct xhci_hcd *xhci, ep_trb = &ep_seg->trbs[(ep_trb_dma - ep_seg->dma) / sizeof(*ep_trb)]; + + trace_xhci_handle_transfer(ep_ring, + (struct xhci_generic_trb *) ep_trb); + /* * No-op TRB should not trigger interrupts. * If ep_trb is a no-op TRB, it means the @@ -2545,6 +2550,8 @@ static int xhci_handle_event(struct xhci_hcd *xhci) xhci->event_ring->cycle_state) return 0; + trace_xhci_handle_event(xhci->event_ring, &event->generic); + /* * Barrier between reading the TRB_CYCLE (valid) flag above and any * speculative reads of the event's flags/data below. @@ -2714,6 +2721,9 @@ static void queue_trb(struct xhci_hcd *xhci, struct xhci_ring *ring, trb->field[1] = cpu_to_le32(field2); trb->field[2] = cpu_to_le32(field3); trb->field[3] = cpu_to_le32(field4); + + trace_xhci_queue_trb(ring, trb); + inc_enq(xhci, ring, more_trbs_coming); } |