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xhci: trace stream context at Set TR Deq command completion

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A successful 'Set TR Deq' command writes a new dequeue pointer to the
stream context for stream rings, show the content of the stream ctx
at command completion.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20241106101459.775897-9-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman 2024-11-06 12:14:34 +02:00 committed by Greg Kroah-Hartman
parent 4817754a18
commit 4aa2e16e05
2 changed files with 14 additions and 5 deletions
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14
drivers/usb/host/xhci-ring.c
View File

@ -1338,6 +1338,7 @@ static void xhci_handle_cmd_set_deq(struct xhci_hcd *xhci, int slot_id,
struct xhci_virt_ep *ep;
struct xhci_ep_ctx *ep_ctx;
struct xhci_slot_ctx *slot_ctx;
struct xhci_stream_ctx *stream_ctx;
struct xhci_td *td, *tmp_td;
bool deferred = false;
@ -1360,6 +1361,11 @@ static void xhci_handle_cmd_set_deq(struct xhci_hcd *xhci, int slot_id,
trace_xhci_handle_cmd_set_deq(slot_ctx);
trace_xhci_handle_cmd_set_deq_ep(ep_ctx);
if (ep->ep_state & EP_HAS_STREAMS) {
stream_ctx = &ep->stream_info->stream_ctx_array[stream_id];
trace_xhci_handle_cmd_set_deq_stream(ep->stream_info, stream_id);
}
if (cmd_comp_code != COMP_SUCCESS) {
unsigned int ep_state;
unsigned int slot_state;
@ -1396,9 +1402,7 @@ static void xhci_handle_cmd_set_deq(struct xhci_hcd *xhci, int slot_id,
u64 deq;
/* 4.6.10 deq ptr is written to the stream ctx for streams */
if (ep->ep_state & EP_HAS_STREAMS) {
struct xhci_stream_ctx *ctx =
&ep->stream_info->stream_ctx_array[stream_id];
deq = le64_to_cpu(ctx->stream_ring) & SCTX_DEQ_MASK;
deq = le64_to_cpu(stream_ctx->stream_ring) & SCTX_DEQ_MASK;
/*
* Cadence xHCI controllers store some endpoint state
@ -1410,8 +1414,8 @@ static void xhci_handle_cmd_set_deq(struct xhci_hcd *xhci, int slot_id,
* To fix this issue driver must clear Rsvd0 field.
*/
if (xhci->quirks & XHCI_CDNS_SCTX_QUIRK) {
ctx->reserved[0] = 0;
ctx->reserved[1] = 0;
stream_ctx->reserved[0] = 0;
stream_ctx->reserved[1] = 0;
}
} else {
deq = le64_to_cpu(ep_ctx->deq) & ~EP_CTX_CYCLE_MASK;

5
drivers/usb/host/xhci-trace.h
View File

@ -340,6 +340,11 @@ DEFINE_EVENT(xhci_log_stream_ctx, xhci_alloc_stream_info_ctx,
TP_ARGS(info, stream_id)
);
DEFINE_EVENT(xhci_log_stream_ctx, xhci_handle_cmd_set_deq_stream,
TP_PROTO(struct xhci_stream_info *info, unsigned int stream_id),
TP_ARGS(info, stream_id)
);
DECLARE_EVENT_CLASS(xhci_log_ep_ctx,
TP_PROTO(struct xhci_ep_ctx *ctx),
TP_ARGS(ctx),