@@ -1,4 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
+ccflags-y := -I$(src)
obj-${CONFIG_USB4} := thunderbolt.o
thunderbolt-objs := nhi.o nhi_ops.o ctl.o tb.o switch.o cap.o path.o tunnel.o eeprom.o
thunderbolt-objs += domain.o dma_port.o icm.o property.o xdomain.o lc.o tmu.o usb4.o
@@ -15,6 +15,8 @@
#include "ctl.h"
+#define CREATE_TRACE_POINTS
+#include "trace.h"
#define TB_CTL_RX_PKG_COUNT 10
#define TB_CTL_RETRIES 4
@@ -32,6 +34,7 @@
* @timeout_msec: Default timeout for non-raw control messages
* @callback: Callback called when hotplug message is received
* @callback_data: Data passed to @callback
+ * @index: Domain number. This will be output with the trace record.
*/
struct tb_ctl {
struct tb_nhi *nhi;
@@ -47,6 +50,8 @@ struct tb_ctl {
int timeout_msec;
event_cb callback;
void *callback_data;
+
+ int index;
};
@@ -369,6 +374,9 @@ static int tb_ctl_tx(struct tb_ctl *ctl, const void *data, size_t len,
pkg->frame.size = len + 4;
pkg->frame.sof = type;
pkg->frame.eof = type;
+
+ trace_tb_tx(ctl->index, type, data, len);
+
cpu_to_be32_array(pkg->buffer, data, len / 4);
*(__be32 *) (pkg->buffer + len) = tb_crc(pkg->buffer, len);
@@ -384,6 +392,7 @@ static int tb_ctl_tx(struct tb_ctl *ctl, const void *data, size_t len,
static bool tb_ctl_handle_event(struct tb_ctl *ctl, enum tb_cfg_pkg_type type,
struct ctl_pkg *pkg, size_t size)
{
+ trace_tb_event(ctl->index, type, pkg->buffer, size);
return ctl->callback(ctl->callback_data, type, pkg->buffer, size);
}
@@ -489,6 +498,9 @@ static void tb_ctl_rx_callback(struct tb_ring *ring, struct ring_frame *frame,
* triggered from messing with the active requests.
*/
req = tb_cfg_request_find(pkg->ctl, pkg);
+
+ trace_tb_rx(pkg->ctl->index, frame->eof, pkg->buffer, frame->size, !req);
+
if (req) {
if (req->copy(req, pkg))
schedule_work(&req->work);
@@ -614,6 +626,7 @@ struct tb_cfg_result tb_cfg_request_sync(struct tb_ctl *ctl,
/**
* tb_ctl_alloc() - allocate a control channel
* @nhi: Pointer to NHI
+ * @index: Domain number
* @timeout_msec: Default timeout used with non-raw control messages
* @cb: Callback called for plug events
* @cb_data: Data passed to @cb
@@ -622,14 +635,16 @@ struct tb_cfg_result tb_cfg_request_sync(struct tb_ctl *ctl,
*
* Return: Returns a pointer on success or NULL on failure.
*/
-struct tb_ctl *tb_ctl_alloc(struct tb_nhi *nhi, int timeout_msec, event_cb cb,
- void *cb_data)
+struct tb_ctl *tb_ctl_alloc(struct tb_nhi *nhi, int index, int timeout_msec,
+ event_cb cb, void *cb_data)
{
int i;
struct tb_ctl *ctl = kzalloc(sizeof(*ctl), GFP_KERNEL);
if (!ctl)
return NULL;
+
ctl->nhi = nhi;
+ ctl->index = index;
ctl->timeout_msec = timeout_msec;
ctl->callback = cb;
ctl->callback_data = cb_data;
@@ -21,8 +21,8 @@ struct tb_ctl;
typedef bool (*event_cb)(void *data, enum tb_cfg_pkg_type type,
const void *buf, size_t size);
-struct tb_ctl *tb_ctl_alloc(struct tb_nhi *nhi, int timeout_msec, event_cb cb,
- void *cb_data);
+struct tb_ctl *tb_ctl_alloc(struct tb_nhi *nhi, int index, int timeout_msec,
+ event_cb cb, void *cb_data);
void tb_ctl_start(struct tb_ctl *ctl);
void tb_ctl_stop(struct tb_ctl *ctl);
void tb_ctl_free(struct tb_ctl *ctl);
@@ -397,7 +397,7 @@ struct tb *tb_domain_alloc(struct tb_nhi *nhi, int timeout_msec, size_t privsize
if (!tb->wq)
goto err_remove_ida;
- tb->ctl = tb_ctl_alloc(nhi, timeout_msec, tb_domain_event_cb, tb);
+ tb->ctl = tb_ctl_alloc(nhi, tb->index, timeout_msec, tb_domain_event_cb, tb);
if (!tb->ctl)
goto err_destroy_wq;
new file mode 100644
@@ -0,0 +1,188 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Thunderbolt tracing support
+ *
+ * Copyright (C) 2024, Intel Corporation
+ * Author: Mika Westerberg <mika.westerberg@linux.intel.com>
+ * Gil Fine <gil.fine@intel.com>
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM thunderbolt
+
+#if !defined(TB_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
+#define TB_TRACE_H_
+
+#include <linux/trace_seq.h>
+#include <linux/tracepoint.h>
+
+#include "tb_msgs.h"
+
+#define tb_cfg_type_name(type) { type, #type }
+#define show_type_name(val) \
+ __print_symbolic(val, \
+ tb_cfg_type_name(TB_CFG_PKG_READ), \
+ tb_cfg_type_name(TB_CFG_PKG_WRITE), \
+ tb_cfg_type_name(TB_CFG_PKG_ERROR), \
+ tb_cfg_type_name(TB_CFG_PKG_NOTIFY_ACK), \
+ tb_cfg_type_name(TB_CFG_PKG_EVENT), \
+ tb_cfg_type_name(TB_CFG_PKG_XDOMAIN_REQ), \
+ tb_cfg_type_name(TB_CFG_PKG_XDOMAIN_RESP), \
+ tb_cfg_type_name(TB_CFG_PKG_OVERRIDE), \
+ tb_cfg_type_name(TB_CFG_PKG_RESET), \
+ tb_cfg_type_name(TB_CFG_PKG_ICM_EVENT), \
+ tb_cfg_type_name(TB_CFG_PKG_ICM_CMD), \
+ tb_cfg_type_name(TB_CFG_PKG_ICM_RESP))
+
+#ifndef TB_TRACE_HELPERS
+#define TB_TRACE_HELPERS
+static inline const char *show_data_read_write(struct trace_seq *p,
+ const u32 *data)
+{
+ const struct cfg_read_pkg *msg = (const struct cfg_read_pkg *)data;
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ trace_seq_printf(p, "offset=%#x, len=%u, port=%d, config=%#x, seq=%d, ",
+ msg->addr.offset, msg->addr.length, msg->addr.port,
+ msg->addr.space, msg->addr.seq);
+
+ return ret;
+}
+
+static inline const char *show_data_error(struct trace_seq *p, const u32 *data)
+{
+ const struct cfg_error_pkg *msg = (const struct cfg_error_pkg *)data;
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ trace_seq_printf(p, "error=%#x, port=%d, plug=%#x, ", msg->error,
+ msg->port, msg->pg);
+
+ return ret;
+}
+
+static inline const char *show_data_event(struct trace_seq *p, const u32 *data)
+{
+ const struct cfg_event_pkg *msg = (const struct cfg_event_pkg *)data;
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ trace_seq_printf(p, "port=%d, unplug=%#x, ", msg->port, msg->unplug);
+
+ return ret;
+}
+
+static inline const char *show_route(struct trace_seq *p, const u32 *data)
+{
+ const struct tb_cfg_header *header = (const struct tb_cfg_header *)data;
+ const char *ret = trace_seq_buffer_ptr(p);
+
+ trace_seq_printf(p, "route=%llx, ", tb_cfg_get_route(header));
+
+ return ret;
+}
+
+static inline const char *show_data(struct trace_seq *p, u8 type,
+ const u32 *data, u32 length)
+{
+ const char *ret = trace_seq_buffer_ptr(p);
+ const char *prefix = "";
+ int i;
+
+ show_route(p, data);
+
+ switch (type) {
+ case TB_CFG_PKG_READ:
+ case TB_CFG_PKG_WRITE:
+ show_data_read_write(p, data);
+ break;
+
+ case TB_CFG_PKG_ERROR:
+ show_data_error(p, data);
+ break;
+
+ case TB_CFG_PKG_EVENT:
+ show_data_event(p, data);
+ break;
+
+ default:
+ break;
+ }
+
+ trace_seq_printf(p, "data=[");
+ for (i = 0; i < length; i++) {
+ trace_seq_printf(p, "%s0x%08x", prefix, data[i]);
+ prefix = ", ";
+ }
+ trace_seq_printf(p, "]");
+ trace_seq_putc(p, 0);
+
+ return ret;
+}
+#endif
+
+DECLARE_EVENT_CLASS(tb_raw,
+ TP_PROTO(int index, u8 type, const void *data, size_t size),
+ TP_ARGS(index, type, data, size),
+ TP_STRUCT__entry(
+ __field(int, index)
+ __field(u8, type)
+ __field(size_t, size)
+ __dynamic_array(u32, data, size / 4)
+ ),
+ TP_fast_assign(
+ __entry->index = index;
+ __entry->type = type;
+ __entry->size = size / 4;
+ memcpy(__get_dynamic_array(data), data, size);
+ ),
+ TP_printk("type=%s, size=%zd, domain=%d, %s",
+ show_type_name(__entry->type), __entry->size, __entry->index,
+ show_data(p, __entry->type, __get_dynamic_array(data),
+ __entry->size)
+ )
+);
+
+DEFINE_EVENT(tb_raw, tb_tx,
+ TP_PROTO(int index, u8 type, const void *data, size_t size),
+ TP_ARGS(index, type, data, size)
+);
+
+DEFINE_EVENT(tb_raw, tb_event,
+ TP_PROTO(int index, u8 type, const void *data, size_t size),
+ TP_ARGS(index, type, data, size)
+);
+
+TRACE_EVENT(tb_rx,
+ TP_PROTO(int index, u8 type, const void *data, size_t size, bool dropped),
+ TP_ARGS(index, type, data, size, dropped),
+ TP_STRUCT__entry(
+ __field(int, index)
+ __field(u8, type)
+ __field(size_t, size)
+ __dynamic_array(u32, data, size / 4)
+ __field(bool, dropped)
+ ),
+ TP_fast_assign(
+ __entry->index = index;
+ __entry->type = type;
+ __entry->size = size / 4;
+ memcpy(__get_dynamic_array(data), data, size);
+ __entry->dropped = dropped;
+ ),
+ TP_printk("type=%s, dropped=%u, size=%zd, domain=%d, %s",
+ show_type_name(__entry->type), __entry->dropped,
+ __entry->size, __entry->index,
+ show_data(p, __entry->type, __get_dynamic_array(data),
+ __entry->size)
+ )
+);
+
+#endif /* TB_TRACE_H_ */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE trace
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>