On 09/05/2017 02:56 PM, Curt Meyers wrote:
On 09/04/2017 04:13 AM, Mathias Nyman wrote:
On 04.09.2017 13:46, Felipe Balbi wrote:
Hi,
Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> writes:
Unfortunately config endpoint command doesn't log endpoint context
in this log,
it should call trace_xhci_handle_cmd_config_ep(ep_ctx), I don't
know why it's missing.
That's called conditionally:
case TRB_CONFIG_EP:
if (!cmd->completion)
xhci_handle_cmd_config_ep(xhci, slot_id, event,
cmd_comp_code);
Yep, need to change the tracing so we get it for every config
endpoint command
But later on at Set TR Dequeue Pointer Command it logs the endpiont
context:
259.147237: xhci_handle_cmd_set_deq: RS 00000 super-speed Ctx
Entries 7 MEL 512 us Port# 19/0 [TT Slot 0 Port# 0 TTT 0 Intr 0]
Addr 1 State configured
259.147238: xhci_handle_cmd_set_deq_ep: State stopped mult 1 max P.
Streams 0 interval 125 us max ESIT payload 201326592 CErr 0 Type
Isoc IN burst 2 maxp 1024 deq 00000003f9fd6510 avg trb len 3072
This looks odd, 201326592 bytes per ESIT, way too much. So much
that I suspect tracing decodes it wrong
try this:
modified drivers/usb/host/xhci.h
@@ -2540,9 +2540,7 @@ static inline const char
*xhci_decode_ep_context(u32 info, u32 info2, u64 deq,
u8 lsa;
u8 hid;
- esit = EP_MAX_ESIT_PAYLOAD_HI(info) << 16 |
- EP_MAX_ESIT_PAYLOAD_LO(tx_info);
-
+ esit = CTX_TO_MAX_ESIT_PAYLOAD(info);
ep_state = info & EP_STATE_MASK;
max_pstr = info & EP_MAXPSTREAMS_MASK;
interval = CTX_TO_EP_INTERVAL(info);
Yes, I noticed the same, and there's also a high ESIT bit field for
new hosts,
I pushed a fix to my for-usb-linus branch for that
+#define CTX_TO_MAX_ESIT_PAYLOAD_HI(p) (((p) >> 24) & 0xff)
...
- esit = EP_MAX_ESIT_PAYLOAD_HI(info) << 16 |
- EP_MAX_ESIT_PAYLOAD_LO(tx_info);
+ esit = CTX_TO_MAX_ESIT_PAYLOAD_HI(info) << 16 |
+ CTX_TO_MAX_ESIT_PAYLOAD(tx_info);
-Mathias
Hi Mathias,
I have made the above suggested changed and produced a new trace file.
I hope this helps out.
Curt
Would it help if I sent you a couple of these USB camera devices to
speed up debugging?
Curt
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