[v2,08/10] usb: cdnsp: Add tracepoints for CDNSP driver

Commit Message

Pawel Laszczak Nov. 6, 2020, 11:42 a.m. UTC

Patch adds the series of tracepoints that can be used for
debugging issues detected in driver.

Signed-off-by: Pawel Laszczak <[e-mail]>
---
 drivers/usb/cdns3/Makefile       |   5 +
 drivers/usb/cdns3/cdnsp-debug.h  | 583 +++++++++++++++++++++
 drivers/usb/cdns3/cdnsp-ep0.c    |  22 +-
 drivers/usb/cdns3/cdnsp-gadget.c |  75 ++-
 drivers/usb/cdns3/cdnsp-mem.c    |  18 +-
 drivers/usb/cdns3/cdnsp-ring.c   |  75 ++-
 drivers/usb/cdns3/cdnsp-trace.c  |  12 +
 drivers/usb/cdns3/cdnsp-trace.h  | 840 +++++++++++++++++++++++++++++++
 8 files changed, 1614 insertions(+), 16 deletions(-)
 create mode 100644 drivers/usb/cdns3/cdnsp-debug.h
 create mode 100644 drivers/usb/cdns3/cdnsp-trace.c
 create mode 100644 drivers/usb/cdns3/cdnsp-trace.h

Comments

Peter Chen Nov. 11, 2020, 3:27 a.m. UTC | #1

On 20-11-06 12:42:58, Pawel Laszczak wrote:
> Patch adds the series of tracepoints that can be used for
> debugging issues detected in driver.
> 
> Signed-off-by: Pawel Laszczak <[e-mail]>

Reviewed-by: Peter Chen <[e-mail]>

> ---
>  drivers/usb/cdns3/Makefile       |   5 +
>  drivers/usb/cdns3/cdnsp-debug.h  | 583 +++++++++++++++++++++
>  drivers/usb/cdns3/cdnsp-ep0.c    |  22 +-
>  drivers/usb/cdns3/cdnsp-gadget.c |  75 ++-
>  drivers/usb/cdns3/cdnsp-mem.c    |  18 +-
>  drivers/usb/cdns3/cdnsp-ring.c   |  75 ++-
>  drivers/usb/cdns3/cdnsp-trace.c  |  12 +
>  drivers/usb/cdns3/cdnsp-trace.h  | 840 +++++++++++++++++++++++++++++++
>  8 files changed, 1614 insertions(+), 16 deletions(-)
>  create mode 100644 drivers/usb/cdns3/cdnsp-debug.h
>  create mode 100644 drivers/usb/cdns3/cdnsp-trace.c
>  create mode 100644 drivers/usb/cdns3/cdnsp-trace.h
> 
> diff --git a/drivers/usb/cdns3/Makefile b/drivers/usb/cdns3/Makefile
> index a84b129f14b8..a4fdaabdbe18 100644
> --- a/drivers/usb/cdns3/Makefile
> +++ b/drivers/usb/cdns3/Makefile
> @@ -1,6 +1,7 @@
>  # SPDX-License-Identifier: GPL-2.0
>  # define_trace.h needs to know how to find our header
>  CFLAGS_trace.o					:= -I$(src)
> +CFLAGS_cdnsp-trace.o				:= -I$(src)
>  
>  cdns-usb-common-y				:= core.o drd.o
>  cdns3-y						:= cdns3-plat.o
> @@ -23,3 +24,7 @@ cdnsp-udc-pci-y					:= cdnsp-pci.o
>  obj-$(CONFIG_USB_CDNSP_PCI) 			+= cdnsp-udc-pci.o
>  cdnsp-udc-pci-$(CONFIG_USB_CDNSP_GADGET)	+= cdnsp-ring.o cdnsp-gadget.o \
>  						   cdnsp-mem.o cdnsp-ep0.o
> +
> +ifneq ($(CONFIG_USB_CDNSP_GADGET),)
> +cdnsp-udc-pci-$(CONFIG_TRACING)			+= cdnsp-trace.o
> +endif
> diff --git a/drivers/usb/cdns3/cdnsp-debug.h b/drivers/usb/cdns3/cdnsp-debug.h
> new file mode 100644
> index 000000000000..d6345d4d2911
> --- /dev/null
> +++ b/drivers/usb/cdns3/cdnsp-debug.h
> @@ -0,0 +1,583 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Cadence CDNSP DRD Driver.
> + *
> + * Copyright (C) 2020 Cadence.
> + *
> + * Author: Pawel Laszczak <[e-mail]>
> + *
> + */
> +#ifndef __LINUX_CDNSP_DEBUG
> +#define __LINUX_CDNSP_DEBUG
> +
> +static inline const char *cdnsp_trb_comp_code_string(u8 status)
> +{
> +	switch (status) {
> +	case COMP_INVALID:
> +		return "Invalid";
> +	case COMP_SUCCESS:
> +		return "Success";
> +	case COMP_DATA_BUFFER_ERROR:
> +		return "Data Buffer Error";
> +	case COMP_BABBLE_DETECTED_ERROR:
> +		return "Babble Detected";
> +	case COMP_TRB_ERROR:
> +		return "TRB Error";
> +	case COMP_RESOURCE_ERROR:
> +		return "Resource Error";
> +	case COMP_NO_SLOTS_AVAILABLE_ERROR:
> +		return "No Slots Available Error";
> +	case COMP_INVALID_STREAM_TYPE_ERROR:
> +		return "Invalid Stream Type Error";
> +	case COMP_SLOT_NOT_ENABLED_ERROR:
> +		return "Slot Not Enabled Error";
> +	case COMP_ENDPOINT_NOT_ENABLED_ERROR:
> +		return "Endpoint Not Enabled Error";
> +	case COMP_SHORT_PACKET:
> +		return "Short Packet";
> +	case COMP_RING_UNDERRUN:
> +		return "Ring Underrun";
> +	case COMP_RING_OVERRUN:
> +		return "Ring Overrun";
> +	case COMP_VF_EVENT_RING_FULL_ERROR:
> +		return "VF Event Ring Full Error";
> +	case COMP_PARAMETER_ERROR:
> +		return "Parameter Error";
> +	case COMP_CONTEXT_STATE_ERROR:
> +		return "Context State Error";
> +	case COMP_EVENT_RING_FULL_ERROR:
> +		return "Event Ring Full Error";
> +	case COMP_INCOMPATIBLE_DEVICE_ERROR:
> +		return "Incompatible Device Error";
> +	case COMP_MISSED_SERVICE_ERROR:
> +		return "Missed Service Error";
> +	case COMP_COMMAND_RING_STOPPED:
> +		return "Command Ring Stopped";
> +	case COMP_COMMAND_ABORTED:
> +		return "Command Aborted";
> +	case COMP_STOPPED:
> +		return "Stopped";
> +	case COMP_STOPPED_LENGTH_INVALID:
> +		return "Stopped - Length Invalid";
> +	case COMP_STOPPED_SHORT_PACKET:
> +		return "Stopped - Short Packet";
> +	case COMP_MAX_EXIT_LATENCY_TOO_LARGE_ERROR:
> +		return "Max Exit Latency Too Large Error";
> +	case COMP_ISOCH_BUFFER_OVERRUN:
> +		return "Isoch Buffer Overrun";
> +	case COMP_EVENT_LOST_ERROR:
> +		return "Event Lost Error";
> +	case COMP_UNDEFINED_ERROR:
> +		return "Undefined Error";
> +	case COMP_INVALID_STREAM_ID_ERROR:
> +		return "Invalid Stream ID Error";
> +	default:
> +		return "Unknown!!";
> +	}
> +}
> +
> +static inline const char *cdnsp_trb_type_string(u8 type)
> +{
> +	switch (type) {
> +	case TRB_NORMAL:
> +		return "Normal";
> +	case TRB_SETUP:
> +		return "Setup Stage";
> +	case TRB_DATA:
> +		return "Data Stage";
> +	case TRB_STATUS:
> +		return "Status Stage";
> +	case TRB_ISOC:
> +		return "Isoch";
> +	case TRB_LINK:
> +		return "Link";
> +	case TRB_EVENT_DATA:
> +		return "Event Data";
> +	case TRB_TR_NOOP:
> +		return "No-Op";
> +	case TRB_ENABLE_SLOT:
> +		return "Enable Slot Command";
> +	case TRB_DISABLE_SLOT:
> +		return "Disable Slot Command";
> +	case TRB_ADDR_DEV:
> +		return "Address Device Command";
> +	case TRB_CONFIG_EP:
> +		return "Configure Endpoint Command";
> +	case TRB_EVAL_CONTEXT:
> +		return "Evaluate Context Command";
> +	case TRB_RESET_EP:
> +		return "Reset Endpoint Command";
> +	case TRB_STOP_RING:
> +		return "Stop Ring Command";
> +	case TRB_SET_DEQ:
> +		return "Set TR Dequeue Pointer Command";
> +	case TRB_RESET_DEV:
> +		return "Reset Device Command";
> +	case TRB_FORCE_HEADER:
> +		return "Force Header Command";
> +	case TRB_CMD_NOOP:
> +		return "No-Op Command";
> +	case TRB_TRANSFER:
> +		return "Transfer Event";
> +	case TRB_COMPLETION:
> +		return "Command Completion Event";
> +	case TRB_PORT_STATUS:
> +		return "Port Status Change Event";
> +	case TRB_HC_EVENT:
> +		return "Device Controller Event";
> +	case TRB_MFINDEX_WRAP:
> +		return "MFINDEX Wrap Event";
> +	case TRB_ENDPOINT_NRDY:
> +		return "Endpoint Not ready";
> +	case TRB_HALT_ENDPOINT:
> +		return "Halt Endpoint";
> +	case TRB_FLUSH_ENDPOINT:
> +		return "FLush Endpoint";
> +	default:
> +		return "UNKNOWN";
> +	}
> +}
> +
> +static inline const char *cdnsp_ring_type_string(enum cdnsp_ring_type type)
> +{
> +	switch (type) {
> +	case TYPE_CTRL:
> +		return "CTRL";
> +	case TYPE_ISOC:
> +		return "ISOC";
> +	case TYPE_BULK:
> +		return "BULK";
> +	case TYPE_INTR:
> +		return "INTR";
> +	case TYPE_STREAM:
> +		return "STREAM";
> +	case TYPE_COMMAND:
> +		return "CMD";
> +	case TYPE_EVENT:
> +		return "EVENT";
> +	}
> +
> +	return "UNKNOWN";
> +}
> +
> +static inline char *cdnsp_slot_state_string(u32 state)
> +{
> +	switch (state) {
> +	case SLOT_STATE_ENABLED:
> +		return "enabled/disabled";
> +	case SLOT_STATE_DEFAULT:
> +		return "default";
> +	case SLOT_STATE_ADDRESSED:
> +		return "addressed";
> +	case SLOT_STATE_CONFIGURED:
> +		return "configured";
> +	default:
> +		return "reserved";
> +	}
> +}
> +
> +static inline const char *cdnsp_decode_trb(char *str, size_t size, u32 field0,
> +					   u32 field1, u32 field2, u32 field3)
> +{
> +	int ep_id = TRB_TO_EP_INDEX(field3) - 1;
> +	int type = TRB_FIELD_TO_TYPE(field3);
> +	unsigned int ep_num;
> +	int ret = 0;
> +	u32 temp;
> +
> +	ep_num = DIV_ROUND_UP(ep_id, 2);
> +
> +	switch (type) {
> +	case TRB_LINK:
> +		ret += snprintf(str, size,
> +				"LINK %08x%08x intr %ld type '%s' flags %c:%c:%c:%c",
> +				field1, field0, GET_INTR_TARGET(field2),
> +				cdnsp_trb_type_string(type),
> +				field3 & TRB_IOC ? 'I' : 'i',
> +				field3 & TRB_CHAIN ? 'C' : 'c',
> +				field3 & TRB_TC ? 'T' : 't',
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_TRANSFER:
> +	case TRB_COMPLETION:
> +	case TRB_PORT_STATUS:
> +	case TRB_HC_EVENT:
> +		ret += snprintf(str, size,
> +				"ep%d%s(%d) type '%s' TRB %08x%08x status '%s'"
> +				" len %ld slot %ld flags %c:%c",
> +				ep_num, ep_id % 2 ? "out" : "in",
> +				TRB_TO_EP_INDEX(field3),
> +				cdnsp_trb_type_string(type), field1, field0,
> +				cdnsp_trb_comp_code_string(GET_COMP_CODE(field2)),
> +				EVENT_TRB_LEN(field2), TRB_TO_SLOT_ID(field3),
> +				field3 & EVENT_DATA ? 'E' : 'e',
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_MFINDEX_WRAP:
> +		ret += snprintf(str, size, "%s: flags %c",
> +				cdnsp_trb_type_string(type),
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_SETUP:
> +		ret += snprintf(str, size,
> +				"type '%s' bRequestType %02x bRequest %02x "
> +				"wValue %02x%02x wIndex %02x%02x wLength %d "
> +				"length %ld TD size %ld intr %ld Setup ID %ld "
> +				"flags %c:%c:%c",
> +				cdnsp_trb_type_string(type),
> +				field0 & 0xff,
> +				(field0 & 0xff00) >> 8,
> +				(field0 & 0xff000000) >> 24,
> +				(field0 & 0xff0000) >> 16,
> +				(field1 & 0xff00) >> 8,
> +				field1 & 0xff,
> +				(field1 & 0xff000000) >> 16 |
> +				(field1 & 0xff0000) >> 16,
> +				TRB_LEN(field2), GET_TD_SIZE(field2),
> +				GET_INTR_TARGET(field2),
> +				TRB_SETUPID_TO_TYPE(field3),
> +				field3 & TRB_IDT ? 'D' : 'd',
> +				field3 & TRB_IOC ? 'I' : 'i',
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_DATA:
> +		ret += snprintf(str, size,
> +				"type '%s' Buffer %08x%08x length %ld TD size %ld "
> +				"intr %ld flags %c:%c:%c:%c:%c:%c:%c",
> +				cdnsp_trb_type_string(type),
> +				field1, field0, TRB_LEN(field2),
> +				GET_TD_SIZE(field2),
> +				GET_INTR_TARGET(field2),
> +				field3 & TRB_IDT ? 'D' : 'i',
> +				field3 & TRB_IOC ? 'I' : 'i',
> +				field3 & TRB_CHAIN ? 'C' : 'c',
> +				field3 & TRB_NO_SNOOP ? 'S' : 's',
> +				field3 & TRB_ISP ? 'I' : 'i',
> +				field3 & TRB_ENT ? 'E' : 'e',
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_STATUS:
> +		ret += snprintf(str, size,
> +				"Buffer %08x%08x length %ld TD size %ld intr"
> +				"%ld type '%s' flags %c:%c:%c:%c",
> +				field1, field0, TRB_LEN(field2),
> +				GET_TD_SIZE(field2),
> +				GET_INTR_TARGET(field2),
> +				cdnsp_trb_type_string(type),
> +				field3 & TRB_IOC ? 'I' : 'i',
> +				field3 & TRB_CHAIN ? 'C' : 'c',
> +				field3 & TRB_ENT ? 'E' : 'e',
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_NORMAL:
> +	case TRB_ISOC:
> +	case TRB_EVENT_DATA:
> +	case TRB_TR_NOOP:
> +		ret += snprintf(str, size,
> +				"type '%s' Buffer %08x%08x length %ld "
> +				"TD size %ld intr %ld "
> +				"flags %c:%c:%c:%c:%c:%c:%c:%c:%c",
> +				cdnsp_trb_type_string(type),
> +				field1, field0, TRB_LEN(field2),
> +				GET_TD_SIZE(field2),
> +				GET_INTR_TARGET(field2),
> +				field3 & TRB_BEI ? 'B' : 'b',
> +				field3 & TRB_IDT ? 'T' : 't',
> +				field3 & TRB_IOC ? 'I' : 'i',
> +				field3 & TRB_CHAIN ? 'C' : 'c',
> +				field3 & TRB_NO_SNOOP ? 'S' : 's',
> +				field3 & TRB_ISP ? 'I' : 'i',
> +				field3 & TRB_ENT ? 'E' : 'e',
> +				field3 & TRB_CYCLE ? 'C' : 'c',
> +				!(field3 & TRB_EVENT_INVALIDATE) ? 'V' : 'v');
> +		break;
> +	case TRB_CMD_NOOP:
> +	case TRB_ENABLE_SLOT:
> +		ret += snprintf(str, size, "%s: flags %c",
> +				cdnsp_trb_type_string(type),
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_DISABLE_SLOT:
> +		ret += snprintf(str, size, "%s: slot %ld flags %c",
> +				cdnsp_trb_type_string(type),
> +				TRB_TO_SLOT_ID(field3),
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_ADDR_DEV:
> +		ret += snprintf(str, size,
> +				"%s: ctx %08x%08x slot %ld flags %c:%c",
> +				cdnsp_trb_type_string(type), field1, field0,
> +				TRB_TO_SLOT_ID(field3),
> +				field3 & TRB_BSR ? 'B' : 'b',
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_CONFIG_EP:
> +		ret += snprintf(str, size,
> +				"%s: ctx %08x%08x slot %ld flags %c:%c",
> +				cdnsp_trb_type_string(type), field1, field0,
> +				TRB_TO_SLOT_ID(field3),
> +				field3 & TRB_DC ? 'D' : 'd',
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_EVAL_CONTEXT:
> +		ret += snprintf(str, size,
> +				"%s: ctx %08x%08x slot %ld flags %c",
> +				cdnsp_trb_type_string(type), field1, field0,
> +				TRB_TO_SLOT_ID(field3),
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_RESET_EP:
> +	case TRB_HALT_ENDPOINT:
> +	case TRB_FLUSH_ENDPOINT:
> +		ret += snprintf(str, size,
> +				"%s: ep%d%s(%d) ctx %08x%08x slot %ld flags %c",
> +				cdnsp_trb_type_string(type),
> +				ep_num, ep_id % 2 ? "out" : "in",
> +				TRB_TO_EP_INDEX(field3), field1, field0,
> +				TRB_TO_SLOT_ID(field3),
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_STOP_RING:
> +		ret += snprintf(str, size,
> +				"%s: ep%d%s(%d) slot %ld sp %d flags %c",
> +				cdnsp_trb_type_string(type),
> +				ep_num, ep_id % 2 ? "out" : "in",
> +				TRB_TO_EP_INDEX(field3),
> +				TRB_TO_SLOT_ID(field3),
> +				TRB_TO_SUSPEND_PORT(field3),
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_SET_DEQ:
> +		ret += snprintf(str, size,
> +				"%s: ep%d%s(%d) deq %08x%08x stream %ld slot %ld  flags %c",
> +				cdnsp_trb_type_string(type),
> +				ep_num, ep_id % 2 ? "out" : "in",
> +				TRB_TO_EP_INDEX(field3), field1, field0,
> +				TRB_TO_STREAM_ID(field2),
> +				TRB_TO_SLOT_ID(field3),
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_RESET_DEV:
> +		ret += snprintf(str, size, "%s: slot %ld flags %c",
> +				cdnsp_trb_type_string(type),
> +				TRB_TO_SLOT_ID(field3),
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	case TRB_ENDPOINT_NRDY:
> +		temp  = TRB_TO_HOST_STREAM(field2);
> +
> +		ret += snprintf(str, size,
> +				"%s: ep%d%s(%d) H_SID %x%s%s D_SID %lx flags %c:%c",
> +				cdnsp_trb_type_string(type),
> +				ep_num, ep_id % 2 ? "out" : "in",
> +				TRB_TO_EP_INDEX(field3), temp,
> +				temp == STREAM_PRIME_ACK ? "(PRIME)" : "",
> +				temp == STREAM_REJECTED ? "(REJECTED)" : "",
> +				TRB_TO_DEV_STREAM(field0),
> +				field3 & TRB_STAT ? 'S' : 's',
> +				field3 & TRB_CYCLE ? 'C' : 'c');
> +		break;
> +	default:
> +		ret += snprintf(str, size,
> +				"type '%s' -> raw %08x %08x %08x %08x",
> +				cdnsp_trb_type_string(type),
> +				field0, field1, field2, field3);
> +	}
> +
> +	return str;
> +}
> +
> +static inline const char *cdnsp_decode_slot_context(u32 info, u32 info2,
> +						    u32 int_target, u32 state)
> +{
> +	static char str[1024];
> +	int ret = 0;
> +	u32 speed;
> +	char *s;
> +
> +	speed = info & DEV_SPEED;
> +
> +	switch (speed) {
> +	case SLOT_SPEED_FS:
> +		s = "full-speed";
> +		break;
> +	case SLOT_SPEED_HS:
> +		s = "high-speed";
> +		break;
> +	case SLOT_SPEED_SS:
> +		s = "super-speed";
> +		break;
> +	case SLOT_SPEED_SSP:
> +		s = "super-speed plus";
> +		break;
> +	default:
> +		s = "UNKNOWN speed";
> +	}
> +
> +	ret = sprintf(str, "%s Ctx Entries %ld",
> +		      s, (info & LAST_CTX_MASK) >> 27);
> +
> +	ret += sprintf(str + ret, " [Intr %ld] Addr %ld State %s",
> +		       GET_INTR_TARGET(int_target), state & DEV_ADDR_MASK,
> +		       cdnsp_slot_state_string(GET_SLOT_STATE(state)));
> +
> +	return str;
> +}
> +
> +static inline const char *cdnsp_portsc_link_state_string(u32 portsc)
> +{
> +	switch (portsc & PORT_PLS_MASK) {
> +	case XDEV_U0:
> +		return "U0";
> +	case XDEV_U1:
> +		return "U1";
> +	case XDEV_U2:
> +		return "U2";
> +	case XDEV_U3:
> +		return "U3";
> +	case XDEV_DISABLED:
> +		return "Disabled";
> +	case XDEV_RXDETECT:
> +		return "RxDetect";
> +	case XDEV_INACTIVE:
> +		return "Inactive";
> +	case XDEV_POLLING:
> +		return "Polling";
> +	case XDEV_RECOVERY:
> +		return "Recovery";
> +	case XDEV_HOT_RESET:
> +		return "Hot Reset";
> +	case XDEV_COMP_MODE:
> +		return "Compliance mode";
> +	case XDEV_TEST_MODE:
> +		return "Test mode";
> +	case XDEV_RESUME:
> +		return "Resume";
> +	default:
> +		break;
> +	}
> +
> +	return "Unknown";
> +}
> +
> +static inline const char *cdnsp_decode_portsc(char *str, size_t size,
> +					      u32 portsc)
> +{
> +	int ret;
> +
> +	ret = snprintf(str, size, "%s %s %s Link:%s PortSpeed:%d ",
> +		       portsc & PORT_POWER ? "Powered" : "Powered-off",
> +		       portsc & PORT_CONNECT ? "Connected" : "Not-connected",
> +		       portsc & PORT_PED ? "Enabled" : "Disabled",
> +		       cdnsp_portsc_link_state_string(portsc),
> +		       DEV_PORT_SPEED(portsc));
> +
> +	if (portsc & PORT_RESET)
> +		ret += snprintf(str + ret, size - ret, "In-Reset ");
> +
> +	ret += snprintf(str + ret, size - ret, "Change: ");
> +	if (portsc & PORT_CSC)
> +		ret += snprintf(str + ret, size - ret, "CSC ");
> +	if (portsc & PORT_WRC)
> +		ret += snprintf(str + ret, size - ret, "WRC ");
> +	if (portsc & PORT_RC)
> +		ret += snprintf(str + ret, size - ret, "PRC ");
> +	if (portsc & PORT_PLC)
> +		ret += snprintf(str + ret, size - ret, "PLC ");
> +	if (portsc & PORT_CEC)
> +		ret += snprintf(str + ret, size - ret, "CEC ");
> +	ret += snprintf(str + ret, size - ret, "Wake: ");
> +	if (portsc & PORT_WKCONN_E)
> +		ret += snprintf(str + ret, size - ret, "WCE ");
> +	if (portsc & PORT_WKDISC_E)
> +		ret += snprintf(str + ret, size - ret, "WDE ");
> +
> +	return str;
> +}
> +
> +static inline const char *cdnsp_ep_state_string(u8 state)
> +{
> +	switch (state) {
> +	case EP_STATE_DISABLED:
> +		return "disabled";
> +	case EP_STATE_RUNNING:
> +		return "running";
> +	case EP_STATE_HALTED:
> +		return "halted";
> +	case EP_STATE_STOPPED:
> +		return "stopped";
> +	case EP_STATE_ERROR:
> +		return "error";
> +	default:
> +		return "INVALID";
> +	}
> +}
> +
> +static inline const char *cdnsp_ep_type_string(u8 type)
> +{
> +	switch (type) {
> +	case ISOC_OUT_EP:
> +		return "Isoc OUT";
> +	case BULK_OUT_EP:
> +		return "Bulk OUT";
> +	case INT_OUT_EP:
> +		return "Int OUT";
> +	case CTRL_EP:
> +		return "Ctrl";
> +	case ISOC_IN_EP:
> +		return "Isoc IN";
> +	case BULK_IN_EP:
> +		return "Bulk IN";
> +	case INT_IN_EP:
> +		return "Int IN";
> +	default:
> +		return "INVALID";
> +	}
> +}
> +
> +static inline const char *cdnsp_decode_ep_context(char *str, size_t size,
> +						  u32 info, u32 info2,
> +						  u64 deq, u32 tx_info)
> +{
> +	u8 max_pstr, ep_state, interval, ep_type, burst, cerr, mult;
> +	bool lsa, hid;
> +	u16 maxp, avg;
> +	u32 esit;
> +	int ret;
> +
> +	esit = CTX_TO_MAX_ESIT_PAYLOAD_HI(info) << 16 |
> +	       CTX_TO_MAX_ESIT_PAYLOAD_LO(tx_info);
> +
> +	ep_state = info & EP_STATE_MASK;
> +	max_pstr = CTX_TO_EP_MAXPSTREAMS(info);
> +	interval = CTX_TO_EP_INTERVAL(info);
> +	mult = CTX_TO_EP_MULT(info) + 1;
> +	lsa = !!(info & EP_HAS_LSA);
> +
> +	cerr = (info2 & (3 << 1)) >> 1;
> +	ep_type = CTX_TO_EP_TYPE(info2);
> +	hid = !!(info2 & (1 << 7));
> +	burst = CTX_TO_MAX_BURST(info2);
> +	maxp = MAX_PACKET_DECODED(info2);
> +
> +	avg = EP_AVG_TRB_LENGTH(tx_info);
> +
> +	ret = snprintf(str, size, "State %s mult %d max P. Streams %d %s",
> +		       cdnsp_ep_state_string(ep_state), mult,
> +		       max_pstr, lsa ? "LSA " : "");
> +
> +	ret += snprintf(str + ret, size - ret,
> +			"interval %d us max ESIT payload %d CErr %d ",
> +			(1 << interval) * 125, esit, cerr);
> +
> +	ret += snprintf(str + ret, size - ret,
> +			"Type %s %sburst %d maxp %d deq %016llx ",
> +			cdnsp_ep_type_string(ep_type), hid ? "HID" : "",
> +			burst, maxp, deq);
> +
> +	ret += snprintf(str + ret, size - ret, "avg trb len %d", avg);
> +
> +	return str;
> +}
> +
> +#endif /*__LINUX_CDNSP_DEBUG*/
> diff --git a/drivers/usb/cdns3/cdnsp-ep0.c b/drivers/usb/cdns3/cdnsp-ep0.c
> index 6235a7e4e5da..13771a7087ef 100644
> --- a/drivers/usb/cdns3/cdnsp-ep0.c
> +++ b/drivers/usb/cdns3/cdnsp-ep0.c
> @@ -13,6 +13,7 @@
>  #include <linux/list.h>
>  
>  #include "cdnsp-gadget.h"
> +#include "cdnsp-trace.h"
>  
>  static void cdnsp_ep0_stall(struct cdnsp_device *pdev)
>  {
> @@ -23,11 +24,13 @@ static void cdnsp_ep0_stall(struct cdnsp_device *pdev)
>  	preq = next_request(&pep->pending_list);
>  
>  	if (pdev->three_stage_setup) {
> +		trace_cdnsp_ep0_data_stage("send stall");
>  		cdnsp_halt_endpoint(pdev, pep, true);
>  
>  		if (preq)
>  			cdnsp_gadget_giveback(pep, preq, -ECONNRESET);
>  	} else {
> +		trace_cdnsp_ep0_status_stage("send stall");
>  		pep->ep_state |= EP0_HALTED_STATUS;
>  
>  		if (preq)
> @@ -42,6 +45,8 @@ static int cdnsp_ep0_delegate_req(struct cdnsp_device *pdev,
>  {
>  	int ret;
>  
> +	trace_cdnsp_ep0_request("delagete");
> +
>  	spin_unlock(&pdev->lock);
>  	ret = pdev->gadget_driver->setup(&pdev->gadget, ctrl);
>  	spin_lock(&pdev->lock);
> @@ -60,8 +65,10 @@ static int cdnsp_ep0_set_config(struct cdnsp_device *pdev,
>  
>  	switch (state) {
>  	case USB_STATE_ADDRESS:
> +		trace_cdnsp_ep0_set_config("from Address state");
>  		break;
>  	case USB_STATE_CONFIGURED:
> +		trace_cdnsp_ep0_set_config("from Configured state");
>  		break;
>  	default:
>  		dev_err(pdev->dev, "Set Configuration - bad device state\n");
> @@ -123,6 +130,7 @@ static int cdnsp_ep0_set_address(struct cdnsp_device *pdev,
>  
>  int cdnsp_status_stage(struct cdnsp_device *pdev)
>  {
> +	trace_cdnsp_ep0_status_stage("preparing");
>  	pdev->ep0_stage = CDNSP_STATUS_STAGE;
>  	pdev->ep0_preq.request.length = 0;
>  
> @@ -212,18 +220,21 @@ static int cdnsp_ep0_handle_feature_device(struct cdnsp_device *pdev,
>  	switch (le16_to_cpu(ctrl->wValue)) {
>  	case USB_DEVICE_REMOTE_WAKEUP:
>  		pdev->may_wakeup = !!set;
> +		trace_cdnsp_may_wakeup(set);
>  		break;
>  	case USB_DEVICE_U1_ENABLE:
>  		if (state != USB_STATE_CONFIGURED || speed < USB_SPEED_SUPER)
>  			return -EINVAL;
>  
>  		pdev->u1_allowed = !!set;
> +		trace_cdnsp_u1(set);
>  		break;
>  	case USB_DEVICE_U2_ENABLE:
>  		if (state != USB_STATE_CONFIGURED || speed < USB_SPEED_SUPER)
>  			return -EINVAL;
>  
>  		pdev->u2_allowed = !!set;
> +		trace_cdnsp_u2(set);
>  		break;
>  	case USB_DEVICE_LTM_ENABLE:
>  		return -EINVAL;
> @@ -427,6 +438,8 @@ void cdnsp_setup_analyze(struct cdnsp_device *pdev)
>  	int ret = 0;
>  	__le16 len;
>  
> +	trace_cdnsp_ctrl_req(ctrl);
> +
>  	if (!pdev->gadget_driver)
>  		goto out;
>  
> @@ -437,8 +450,10 @@ void cdnsp_setup_analyze(struct cdnsp_device *pdev)
>  	}
>  
>  	/* Restore the ep0 to Stopped/Running state. */
> -	if (pdev->eps[0].ep_state & EP_HALTED)
> +	if (pdev->eps[0].ep_state & EP_HALTED) {
> +		trace_cdnsp_ep0_halted("Restore to normal state");
>  		cdnsp_halt_endpoint(pdev, &pdev->eps[0], 0);
> +	}
>  
>  	/*
>  	 * Finishing previous SETUP transfer by removing request from
> @@ -447,6 +462,7 @@ void cdnsp_setup_analyze(struct cdnsp_device *pdev)
>  	if (!list_empty(&pdev->eps[0].pending_list)) {
>  		struct cdnsp_request	*req;
>  
> +		trace_cdnsp_ep0_request("Remove previous");
>  		req = next_request(&pdev->eps[0].pending_list);
>  		cdnsp_ep_dequeue(&pdev->eps[0], req);
>  	}
> @@ -468,8 +484,10 @@ void cdnsp_setup_analyze(struct cdnsp_device *pdev)
>  	if (!len)
>  		pdev->ep0_stage = CDNSP_STATUS_STAGE;
>  
> -	if (ret == USB_GADGET_DELAYED_STATUS)
> +	if (ret == USB_GADGET_DELAYED_STATUS) {
> +		trace_cdnsp_ep0_status_stage("delayed");
>  		return;
> +	}
>  out:
>  	if (ret < 0)
>  		cdnsp_ep0_stall(pdev);
> diff --git a/drivers/usb/cdns3/cdnsp-gadget.c b/drivers/usb/cdns3/cdnsp-gadget.c
> index 1366c3686331..10abad16c26d 100644
> --- a/drivers/usb/cdns3/cdnsp-gadget.c
> +++ b/drivers/usb/cdns3/cdnsp-gadget.c
> @@ -23,6 +23,7 @@
>  #include "gadget-export.h"
>  #include "drd.h"
>  #include "cdnsp-gadget.h"
> +#include "cdnsp-trace.h"
>  
>  unsigned int cdnsp_port_speed(unsigned int port_status)
>  {
> @@ -100,6 +101,7 @@ void cdnsp_set_link_state(struct cdnsp_device *pdev,
>  			  __le32 __iomem *port_regs,
>  			  u32 link_state)
>  {
> +	int port_num = 0xFF;
>  	u32 temp;
>  
>  	temp = readl(port_regs);
> @@ -110,7 +112,12 @@ void cdnsp_set_link_state(struct cdnsp_device *pdev,
>  	temp &= ~PORT_PLS_MASK;
>  	temp |= PORT_LINK_STROBE | link_state;
>  
> +	if (pdev->active_port)
> +		port_num = pdev->active_port->port_num;
> +
> +	trace_cdnsp_handle_port_status(port_num, readl(port_regs));
>  	writel(temp, port_regs);
> +	trace_cdnsp_link_state_changed(port_num, readl(port_regs));
>  }
>  
>  static void cdnsp_disable_port(struct cdnsp_device *pdev,
> @@ -230,6 +237,8 @@ static int cdnsp_start(struct cdnsp_device *pdev)
>  	temp |= (CMD_R_S | CMD_DEVEN);
>  	writel(temp, &pdev->op_regs->command);
>  
> +	trace_cdnsp_init("Turn on controller");
> +
>  	pdev->cdnsp_state = 0;
>  
>  	/*
> @@ -339,8 +348,10 @@ int cdnsp_ep_enqueue(struct cdnsp_ep *pep, struct cdnsp_request *preq)
>  	struct usb_request *request;
>  	int ret;
>  
> -	if (preq->epnum == 0 && !list_empty(&pep->pending_list))
> +	if (preq->epnum == 0 && !list_empty(&pep->pending_list)) {
> +		trace_cdnsp_request_enqueue_busy(preq);
>  		return -EBUSY;
> +	}
>  
>  	request = &preq->request;
>  	request->actual = 0;
> @@ -350,11 +361,15 @@ int cdnsp_ep_enqueue(struct cdnsp_ep *pep, struct cdnsp_request *preq)
>  	preq->td.drbl = 0;
>  
>  	ret = usb_gadget_map_request_by_dev(pdev->dev, request, pep->direction);
> -	if (ret)
> +	if (ret) {
> +		trace_cdnsp_request_enqueue_error(preq);
>  		return ret;
> +	}
>  
>  	list_add_tail(&preq->list, &pep->pending_list);
>  
> +	trace_cdnsp_request_enqueue(preq);
> +
>  	switch (usb_endpoint_type(pep->endpoint.desc)) {
>  	case USB_ENDPOINT_XFER_CONTROL:
>  		ret = cdnsp_queue_ctrl_tx(pdev, preq);
> @@ -376,6 +391,7 @@ int cdnsp_ep_enqueue(struct cdnsp_ep *pep, struct cdnsp_request *preq)
>  	usb_gadget_unmap_request_by_dev(pdev->dev, &preq->request,
>  					pep->direction);
>  	list_del(&preq->list);
> +	trace_cdnsp_request_enqueue_error(preq);
>  
>  	return ret;
>  }
> @@ -410,6 +426,8 @@ int cdnsp_ep_dequeue(struct cdnsp_ep *pep, struct cdnsp_request *preq)
>  	struct cdnsp_device *pdev = pep->pdev;
>  	int ret;
>  
> +	trace_cdnsp_request_dequeue(preq);
> +
>  	if (GET_EP_CTX_STATE(pep->out_ctx) == EP_STATE_RUNNING) {
>  		ret = cdnsp_cmd_stop_ep(pdev, pep);
>  		if (ret)
> @@ -516,11 +534,14 @@ int cdnsp_wait_for_cmd_compl(struct cdnsp_device *pdev)
>  	cmd_trb = pdev->cmd.command_trb;
>  	pdev->cmd.status = 0;
>  
> +	trace_cdnsp_cmd_wait_for_compl(pdev->cmd_ring, &cmd_trb->generic);
> +
>  	ret = readl_poll_timeout_atomic(&pdev->op_regs->cmd_ring, val,
>  					!CMD_RING_BUSY(val), 1,
>  					CDNSP_CMD_TIMEOUT);
>  	if (ret) {
>  		dev_err(pdev->dev, "ERR: Timeout while waiting for command\n");
> +		trace_cdnsp_cmd_timeout(pdev->cmd_ring, &cmd_trb->generic);
>  		pdev->cdnsp_state = CDNSP_STATE_DYING;
>  		return -ETIMEDOUT;
>  	}
> @@ -562,6 +583,8 @@ int cdnsp_wait_for_cmd_compl(struct cdnsp_device *pdev)
>  			continue;
>  		}
>  
> +		trace_cdnsp_handle_command(pdev->cmd_ring, &cmd_trb->generic);
> +
>  		pdev->cmd.status = GET_COMP_CODE(le32_to_cpu(event->event_cmd.status));
>  		if (pdev->cmd.status == COMP_SUCCESS)
>  			return 0;
> @@ -576,6 +599,8 @@ int cdnsp_halt_endpoint(struct cdnsp_device *pdev,
>  {
>  	int ret;
>  
> +	trace_cdnsp_ep_halt(value ? "Set" : "Clear");
> +
>  	if (value) {
>  		ret = cdnsp_cmd_stop_ep(pdev, pep);
>  		if (ret)
> @@ -596,6 +621,8 @@ int cdnsp_halt_endpoint(struct cdnsp_device *pdev,
>  		cdnsp_queue_reset_ep(pdev, pep->idx);
>  		cdnsp_ring_cmd_db(pdev);
>  		ret = cdnsp_wait_for_cmd_compl(pdev);
> +		trace_cdnsp_handle_cmd_reset_ep(pep->out_ctx);
> +
>  		if (ret)
>  			return ret;
>  
> @@ -649,6 +676,9 @@ static int cdnsp_update_eps_configuration(struct cdnsp_device *pdev,
>  	    (ep_sts != EP_STATE_DISABLED && ctrl_ctx->drop_flags))
>  		ret = cdnsp_configure_endpoint(pdev);
>  
> +	trace_cdnsp_configure_endpoint(cdnsp_get_slot_ctx(&pdev->out_ctx));
> +	trace_cdnsp_handle_cmd_config_ep(pep->out_ctx);
> +
>  	cdnsp_zero_in_ctx(pdev);
>  
>  	return ret;
> @@ -673,6 +703,7 @@ int cdnsp_reset_device(struct cdnsp_device *pdev)
>  	/* If device is not setup, there is no point in resetting it. */
>  	slot_ctx = cdnsp_get_slot_ctx(&pdev->out_ctx);
>  	slot_state = GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state));
> +	trace_cdnsp_reset_device(slot_ctx);
>  
>  	if (slot_state <= SLOT_STATE_DEFAULT &&
>  	    pdev->eps[0].ep_state & EP_HALTED) {
> @@ -700,6 +731,8 @@ int cdnsp_reset_device(struct cdnsp_device *pdev)
>  	for (i = 1; i < 31; ++i)
>  		pdev->eps[i].ep_state |= EP_STOPPED;
>  
> +	trace_cdnsp_handle_cmd_reset_dev(slot_ctx);
> +
>  	if (ret)
>  		dev_err(pdev->dev, "Reset device failed with error code %d",
>  			ret);
> @@ -756,6 +789,8 @@ int cdnsp_alloc_streams(struct cdnsp_device *pdev, struct cdnsp_ep *pep)
>  	/* The stream context array size must be a power of two */
>  	num_stream_ctxs = roundup_pow_of_two(num_streams);
>  
> +	trace_cdnsp_stream_number(pep, num_stream_ctxs, num_streams);
> +
>  	ret = cdnsp_alloc_stream_info(pdev, pep, num_stream_ctxs, num_streams);
>  	if (ret)
>  		return ret;
> @@ -781,6 +816,8 @@ int cdnsp_disable_slot(struct cdnsp_device *pdev)
>  	pdev->slot_id = 0;
>  	pdev->active_port = NULL;
>  
> +	trace_cdnsp_handle_cmd_disable_slot(cdnsp_get_slot_ctx(&pdev->out_ctx));
> +
>  	memset(pdev->in_ctx.bytes, 0, CDNSP_CTX_SIZE);
>  	memset(pdev->out_ctx.bytes, 0, CDNSP_CTX_SIZE);
>  
> @@ -804,11 +841,14 @@ int cdnsp_enable_slot(struct cdnsp_device *pdev)
>  	cdnsp_ring_cmd_db(pdev);
>  	ret = cdnsp_wait_for_cmd_compl(pdev);
>  	if (ret)
> -		return ret;
> +		goto show_trace;
>  
>  	pdev->slot_id = 1;
>  
> -	return 0;
> +show_trace:
> +	trace_cdnsp_handle_cmd_enable_slot(cdnsp_get_slot_ctx(&pdev->out_ctx));
> +
> +	return ret;
>  }
>  
>  /*
> @@ -822,8 +862,10 @@ int cdnsp_setup_device(struct cdnsp_device *pdev, enum cdnsp_setup_dev setup)
>  	int dev_state = 0;
>  	int ret;
>  
> -	if (!pdev->slot_id)
> +	if (!pdev->slot_id) {
> +		trace_cdnsp_slot_id("incorrect");
>  		return -EINVAL;
> +	}
>  
>  	if (!pdev->active_port->port_num)
>  		return -EINVAL;
> @@ -831,8 +873,10 @@ int cdnsp_setup_device(struct cdnsp_device *pdev, enum cdnsp_setup_dev setup)
>  	slot_ctx = cdnsp_get_slot_ctx(&pdev->out_ctx);
>  	dev_state = GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state));
>  
> -	if (setup == SETUP_CONTEXT_ONLY && dev_state == SLOT_STATE_DEFAULT)
> +	if (setup == SETUP_CONTEXT_ONLY && dev_state == SLOT_STATE_DEFAULT) {
> +		trace_cdnsp_slot_already_in_default(slot_ctx);
>  		return 0;
> +	}
>  
>  	slot_ctx = cdnsp_get_slot_ctx(&pdev->in_ctx);
>  	ctrl_ctx = cdnsp_get_input_control_ctx(&pdev->in_ctx);
> @@ -848,10 +892,14 @@ int cdnsp_setup_device(struct cdnsp_device *pdev, enum cdnsp_setup_dev setup)
>  	ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG);
>  	ctrl_ctx->drop_flags = 0;
>  
> +	trace_cdnsp_setup_device_slot(slot_ctx);
> +
>  	cdnsp_queue_address_device(pdev, pdev->in_ctx.dma, setup);
>  	cdnsp_ring_cmd_db(pdev);
>  	ret = cdnsp_wait_for_cmd_compl(pdev);
>  
> +	trace_cdnsp_handle_cmd_addr_dev(cdnsp_get_slot_ctx(&pdev->out_ctx));
> +
>  	/* Zero the input context control for later use. */
>  	ctrl_ctx->add_flags = 0;
>  	ctrl_ctx->drop_flags = 0;
> @@ -866,6 +914,8 @@ void cdnsp_set_usb2_hardware_lpm(struct cdnsp_device *pdev,
>  	if (pdev->active_port != &pdev->usb2_port || !pdev->gadget.lpm_capable)
>  		return;
>  
> +	trace_cdnsp_lpm(enable);
> +
>  	if (enable)
>  		writel(PORT_BESL(CDNSP_DEFAULT_BESL) | PORT_L1S_NYET | PORT_HLE,
>  		       &pdev->active_port->regs->portpmsc);
> @@ -945,6 +995,7 @@ static int cdnsp_gadget_ep_enable(struct usb_ep *ep,
>  	pep->ep_state &= ~EP_STOPPED;
>  
>  unlock:
> +	trace_cdnsp_ep_enable_end(pep, 0);
>  	spin_unlock_irqrestore(&pdev->lock, flags);
>  
>  	return ret;
> @@ -1001,6 +1052,7 @@ static int cdnsp_gadget_ep_disable(struct usb_ep *ep)
>  	pep->ep_state |= EP_STOPPED;
>  
>  finish:
> +	trace_cdnsp_ep_disable_end(pep, 0);
>  	spin_unlock_irqrestore(&pdev->lock, flags);
>  
>  	return ret;
> @@ -1019,6 +1071,8 @@ static struct usb_request *cdnsp_gadget_ep_alloc_request(struct usb_ep *ep,
>  	preq->epnum = pep->number;
>  	preq->pep = pep;
>  
> +	trace_cdnsp_alloc_request(preq);
> +
>  	return &preq->request;
>  }
>  
> @@ -1027,6 +1081,7 @@ static void cdnsp_gadget_ep_free_request(struct usb_ep *ep,
>  {
>  	struct cdnsp_request *preq = to_cdnsp_request(request);
>  
> +	trace_cdnsp_free_request(preq);
>  	kfree(preq);
>  }
>  
> @@ -1095,6 +1150,7 @@ static int cdnsp_gadget_ep_set_halt(struct usb_ep *ep, int value)
>  	preq = next_request(&pep->pending_list);
>  	if (value) {
>  		if (preq) {
> +			trace_cdnsp_ep_busy_try_halt_again(pep, 0);
>  			ret = -EAGAIN;
>  			goto done;
>  		}
> @@ -1158,6 +1214,8 @@ void cdnsp_gadget_giveback(struct cdnsp_ep *pep,
>  	usb_gadget_unmap_request_by_dev(pdev->dev, &preq->request,
>  					preq->direction);
>  
> +	trace_cdnsp_request_giveback(preq);
> +
>  	if (preq != &pdev->ep0_preq) {
>  		spin_unlock(&pdev->lock);
>  		usb_gadget_giveback_request(&pep->endpoint, &preq->request);
> @@ -1238,6 +1296,7 @@ static int cdnsp_run(struct cdnsp_device *pdev,
>  	temp = readl(&pdev->ir_set->irq_pending);
>  	writel(IMAN_IE_SET(temp), &pdev->ir_set->irq_pending);
>  
> +	trace_cdnsp_init("Controller ready to work");
>  	return 0;
>  err:
>  	cdnsp_halt(pdev);
> @@ -1390,6 +1449,8 @@ static void cdnsp_stop(struct cdnsp_device *pdev)
>  
>  	cdnsp_consume_all_events(pdev);
>  	cdnsp_clear_cmd_ring(pdev);
> +
> +	trace_cdnsp_exit("Controller stopped.");
>  }
>  
>  /*
> @@ -1471,6 +1532,8 @@ static int cdnsp_gadget_pullup(struct usb_gadget *gadget, int is_on)
>  	struct cdnsp_device *pdev = gadget_to_cdnsp(gadget);
>  	struct cdns *cdns = dev_get_drvdata(pdev->dev);
>  
> +	trace_cdnsp_pullup(is_on);
> +
>  	if (!is_on) {
>  		cdnsp_reset_device(pdev);
>  		cdns_clear_vbus(cdns);
> diff --git a/drivers/usb/cdns3/cdnsp-mem.c b/drivers/usb/cdns3/cdnsp-mem.c
> index 3487367c1bb4..4b16ae7f775d 100644
> --- a/drivers/usb/cdns3/cdnsp-mem.c
> +++ b/drivers/usb/cdns3/cdnsp-mem.c
> @@ -16,6 +16,7 @@
>  #include <linux/usb.h>
>  
>  #include "cdnsp-gadget.h"
> +#include "cdnsp-trace.h"
>  
>  static void cdnsp_free_stream_info(struct cdnsp_device *pdev,
>  				   struct cdnsp_ep *pep);
> @@ -281,6 +282,8 @@ static void cdnsp_ring_free(struct cdnsp_device *pdev, struct cdnsp_ring *ring)
>  	if (!ring)
>  		return;
>  
> +	trace_cdnsp_ring_free(ring);
> +
>  	if (ring->first_seg) {
>  		if (ring->type == TYPE_STREAM)
>  			cdnsp_remove_stream_mapping(ring);
> @@ -397,7 +400,7 @@ static struct cdnsp_ring *cdnsp_ring_alloc(struct cdnsp_device *pdev,
>  			cpu_to_le32(LINK_TOGGLE);
>  
>  	cdnsp_initialize_ring_info(ring);
> -
> +	trace_cdnsp_ring_alloc(ring);
>  	return ring;
>  fail:
>  	kfree(ring);
> @@ -450,6 +453,7 @@ int cdnsp_ring_expansion(struct cdnsp_device *pdev,
>  	}
>  
>  	cdnsp_link_rings(pdev, ring, first, last, num_segs);
> +	trace_cdnsp_ring_expansion(ring);
>  
>  	return 0;
>  }
> @@ -610,6 +614,8 @@ int cdnsp_alloc_stream_info(struct cdnsp_device *pdev,
>  		stream_info->stream_ctx_array[cur_stream].stream_ring =
>  			cpu_to_le64(addr);
>  
> +		trace_cdnsp_set_stream_ring(cur_ring);
> +
>  		ret = cdnsp_update_stream_mapping(cur_ring);
>  		if (ret)
>  			goto cleanup_rings;
> @@ -695,6 +701,7 @@ static int cdnsp_alloc_priv_device(struct cdnsp_device *pdev, gfp_t flags)
>  	pdev->dcbaa->dev_context_ptrs[1] = cpu_to_le64(pdev->out_ctx.dma);
>  	pdev->cmd.in_ctx = &pdev->in_ctx;
>  
> +	trace_cdnsp_alloc_priv_device(pdev);
>  	return 0;
>  fail:
>  	dma_pool_free(pdev->device_pool, pdev->out_ctx.bytes,
> @@ -761,6 +768,8 @@ int cdnsp_setup_addressable_priv_dev(struct cdnsp_device *pdev)
>  	ep0_ctx->deq = cpu_to_le64(pdev->eps[0].ring->first_seg->dma |
>  				   pdev->eps[0].ring->cycle_state);
>  
> +	trace_cdnsp_setup_addressable_priv_device(pdev);
> +
>  	return 0;
>  }
>  
> @@ -1112,7 +1121,7 @@ static void cdnsp_add_in_port(struct cdnsp_device *pdev,
>  			      struct cdnsp_port *port,
>  			      __le32 __iomem *addr)
>  {
> -	u32 temp, port_offset;
> +	u32 temp, port_offset, port_count;
>  
>  	temp = readl(addr);
>  	port->maj_rev = CDNSP_EXT_PORT_MAJOR(temp);
> @@ -1121,6 +1130,9 @@ static void cdnsp_add_in_port(struct cdnsp_device *pdev,
>  	/* Port offset and count in the third dword.*/
>  	temp = readl(addr + 2);
>  	port_offset = CDNSP_EXT_PORT_OFF(temp);
> +	port_count = CDNSP_EXT_PORT_COUNT(temp);
> +
> +	trace_cdnsp_port_info(addr, port_offset, port_count, port->maj_rev);
>  
>  	port->port_num = port_offset;
>  	port->exist = 1;
> @@ -1171,6 +1183,8 @@ static int cdnsp_setup_port_arrays(struct cdnsp_device *pdev, gfp_t flags)
>  		return -ENODEV;
>  	}
>  
> +	trace_cdnsp_init("Found USB 2.0 ports and  USB 3.0 ports.");
> +
>  	pdev->usb2_port.regs = (struct cdnsp_port_regs *)
>  			       (&pdev->op_regs->port_reg_base + NUM_PORT_REGS *
>  				(pdev->usb2_port.port_num - 1));
> diff --git a/drivers/usb/cdns3/cdnsp-ring.c b/drivers/usb/cdns3/cdnsp-ring.c
> index a28faca41a8f..874d9ff5406c 100644
> --- a/drivers/usb/cdns3/cdnsp-ring.c
> +++ b/drivers/usb/cdns3/cdnsp-ring.c
> @@ -61,6 +61,7 @@
>  #include <linux/slab.h>
>  #include <linux/irq.h>
>  
> +#include "cdnsp-trace.h"
>  #include "cdnsp-gadget.h"
>  
>  /*
> @@ -148,7 +149,7 @@ void cdnsp_inc_deq(struct cdnsp_device *pdev, struct cdnsp_ring *ring)
>  	if (ring->type == TYPE_EVENT) {
>  		if (!cdnsp_last_trb_on_seg(ring->deq_seg, ring->dequeue)) {
>  			ring->dequeue++;
> -			return;
> +			goto out;
>  		}
>  
>  		if (cdnsp_last_trb_on_ring(ring, ring->deq_seg, ring->dequeue))
> @@ -156,7 +157,7 @@ void cdnsp_inc_deq(struct cdnsp_device *pdev, struct cdnsp_ring *ring)
>  
>  		ring->deq_seg = ring->deq_seg->next;
>  		ring->dequeue = ring->deq_seg->trbs;
> -		return;
> +		goto out;
>  	}
>  
>  	/* All other rings have link trbs. */
> @@ -168,6 +169,8 @@ void cdnsp_inc_deq(struct cdnsp_device *pdev, struct cdnsp_ring *ring)
>  		ring->deq_seg = ring->deq_seg->next;
>  		ring->dequeue = ring->deq_seg->trbs;
>  	}
> +out:
> +	trace_cdnsp_inc_deq(ring);
>  }
>  
>  /*
> @@ -222,6 +225,8 @@ static void cdnsp_inc_enq(struct cdnsp_device *pdev,
>  		ring->enqueue = ring->enq_seg->trbs;
>  		next = ring->enqueue;
>  	}
> +
> +	trace_cdnsp_inc_enq(ring);
>  }
>  
>  /*
> @@ -261,6 +266,7 @@ static void cdnsp_force_l0_go(struct cdnsp_device *pdev)
>  /* Ring the doorbell after placing a command on the ring. */
>  void cdnsp_ring_cmd_db(struct cdnsp_device *pdev)
>  {
> +	trace_cdnsp_cmd_drbl("Ding Dong");
>  	writel(DB_VALUE_CMD, &pdev->dba->cmd_db);
>  }
>  
> @@ -299,6 +305,8 @@ static bool cdnsp_ring_ep_doorbell(struct cdnsp_device *pdev,
>  	else
>  		db_value = DB_VALUE(pep->idx, stream_id);
>  
> +	trace_cdnsp_tr_drbl(pep, stream_id);
> +
>  	writel(db_value, reg_addr);
>  
>  	cdnsp_force_l0_go(pdev);
> @@ -484,6 +492,8 @@ static void cdnsp_find_new_dequeue_state(struct cdnsp_device *pdev,
>  
>  	state->new_deq_seg = new_seg;
>  	state->new_deq_ptr = new_deq;
> +
> +	trace_cdnsp_new_deq_state(state);
>  }
>  
>  /*
> @@ -544,6 +554,10 @@ static struct cdnsp_segment *cdnsp_trb_in_td(struct cdnsp_device *pdev,
>  		/* If the end TRB isn't in this segment, this is set to 0 */
>  		end_trb_dma = cdnsp_trb_virt_to_dma(cur_seg, end_trb);
>  
> +		trace_cdnsp_looking_trb_in_td(suspect_dma, start_dma,
> +					      end_trb_dma, cur_seg->dma,
> +					      end_seg_dma);
> +
>  		if (end_trb_dma > 0) {
>  			/*
>  			 * The end TRB is in this segment, so suspect should
> @@ -594,6 +608,9 @@ static void cdnsp_unmap_td_bounce_buffer(struct cdnsp_device *pdev,
>  
>  	preq = td->preq;
>  
> +	trace_cdnsp_bounce_unmap(td->preq, seg->bounce_len, seg->bounce_offs,
> +				 seg->bounce_dma, 0);
> +
>  	if (!preq->direction) {
>  		dma_unmap_single(pdev->dev, seg->bounce_dma,
>  				 ring->bounce_buf_len,  DMA_TO_DEVICE);
> @@ -631,6 +648,9 @@ static int cdnsp_cmd_set_deq(struct cdnsp_device *pdev,
>  	cdnsp_ring_cmd_db(pdev);
>  	ret = cdnsp_wait_for_cmd_compl(pdev);
>  
> +	trace_cdnsp_handle_cmd_set_deq(cdnsp_get_slot_ctx(&pdev->out_ctx));
> +	trace_cdnsp_handle_cmd_set_deq_ep(pep->out_ctx);
> +
>  	/*
>  	 * Update the ring's dequeue segment and dequeue pointer
>  	 * to reflect the new position.
> @@ -682,6 +702,9 @@ int cdnsp_remove_request(struct cdnsp_device *pdev,
>  
>  	memset(&deq_state, 0, sizeof(deq_state));
>  
> +	trace_cdnsp_remove_request(pep->out_ctx);
> +	trace_cdnsp_remove_request_td(preq);
> +
>  	cur_td = &preq->td;
>  	ep_ring = cdnsp_request_to_transfer_ring(pdev, preq);
>  
> @@ -789,6 +812,8 @@ static void cdnsp_handle_port_status(struct cdnsp_device *pdev,
>  	writel(cdnsp_port_state_to_neutral(portsc) |
>  	       (portsc & PORT_CHANGE_BITS), &port_regs->portsc);
>  
> +	trace_cdnsp_handle_port_status(pdev->active_port->port_num, portsc);
> +
>  	pdev->gadget.speed = cdnsp_port_speed(portsc);
>  	link_state = portsc & PORT_PLS_MASK;
>  
> @@ -954,8 +979,10 @@ static int cdnsp_giveback_first_trb(struct cdnsp_device *pdev,
>  		start_trb->field[3] &= cpu_to_le32(~TRB_CYCLE);
>  
>  	if ((pep->ep_state & EP_HAS_STREAMS) &&
> -	    !pep->stream_info.first_prime_det)
> +	    !pep->stream_info.first_prime_det) {
> +		trace_cdnsp_wait_for_prime(pep, stream_id);
>  		return 0;
> +	}
>  
>  	return cdnsp_ring_ep_doorbell(pdev, pep, stream_id);
>  }
> @@ -1226,8 +1253,10 @@ static int cdnsp_handle_tx_event(struct cdnsp_device *pdev,
>  	if (invalidate || !pdev->gadget.connected)
>  		goto cleanup;
>  
> -	if (GET_EP_CTX_STATE(pep->out_ctx) == EP_STATE_DISABLED)
> +	if (GET_EP_CTX_STATE(pep->out_ctx) == EP_STATE_DISABLED) {
> +		trace_cdnsp_ep_disabled(pep->out_ctx);
>  		goto err_out;
> +	}
>  
>  	/* Some transfer events don't always point to a trb*/
>  	if (!ep_ring) {
> @@ -1274,8 +1303,23 @@ static int cdnsp_handle_tx_event(struct cdnsp_device *pdev,
>  		 * list.
>  		 */
>  		if (list_empty(&ep_ring->td_list)) {
> -			if (pep->skip)
> +			/*
> +			 * Don't print warnings if it's due to a stopped
> +			 * endpoint generating an extra completion event, or
> +			 * a event for the last TRB of a short TD we already
> +			 * got a short event for.
> +			 * The short TD is already removed from the TD list.
> +			 */
> +			if (!(trb_comp_code == COMP_STOPPED ||
> +			      trb_comp_code == COMP_STOPPED_LENGTH_INVALID ||
> +			      ep_ring->last_td_was_short))
> +				trace_cdnsp_trb_without_td(ep_ring,
> +					(struct cdnsp_generic_trb *)event);
> +
> +			if (pep->skip) {
>  				pep->skip = false;
> +				trace_cdnsp_ep_list_empty_with_skip(pep, 0);
> +			}
>  
>  			goto cleanup;
>  		}
> @@ -1332,6 +1376,9 @@ static int cdnsp_handle_tx_event(struct cdnsp_device *pdev,
>  		ep_trb = &ep_seg->trbs[(ep_trb_dma - ep_seg->dma)
>  				       / sizeof(*ep_trb)];
>  
> +		trace_cdnsp_handle_transfer(ep_ring,
> +					    (struct cdnsp_generic_trb *)ep_trb);
> +
>  		if (cdnsp_trb_is_noop(ep_trb))
>  			goto cleanup;
>  
> @@ -1397,6 +1444,8 @@ static bool cdnsp_handle_event(struct cdnsp_device *pdev)
>  	if (cycle_bit != pdev->event_ring->cycle_state)
>  		return false;
>  
> +	trace_cdnsp_handle_event(pdev->event_ring, &event->generic);
> +
>  	/*
>  	 * Barrier between reading the TRB_CYCLE (valid) flag above and any
>  	 * reads of the event's flags/data below.
> @@ -1544,6 +1593,7 @@ static void cdnsp_queue_trb(struct cdnsp_device *pdev, struct cdnsp_ring *ring,
>  	trb->field[2] = cpu_to_le32(field3);
>  	trb->field[3] = cpu_to_le32(field4);
>  
> +	trace_cdnsp_queue_trb(ring, trb);
>  	cdnsp_inc_enq(pdev, ring, more_trbs_coming);
>  }
>  
> @@ -1574,6 +1624,8 @@ static int cdnsp_prepare_ring(struct cdnsp_device *pdev,
>  		if (cdnsp_room_on_ring(pdev, ep_ring, num_trbs))
>  			break;
>  
> +		trace_cdnsp_no_room_on_ring("try ring expansion");
> +
>  		num_trbs_needed = num_trbs - ep_ring->num_trbs_free;
>  		if (cdnsp_ring_expansion(pdev, ep_ring, num_trbs_needed,
>  					 mem_flags)) {
> @@ -1737,6 +1789,8 @@ static int cdnsp_align_td(struct cdnsp_device *pdev,
>  	/* Is the last nornal TRB alignable by splitting it. */
>  	if (*trb_buff_len > unalign) {
>  		*trb_buff_len -= unalign;
> +		trace_cdnsp_bounce_align_td_split(preq, *trb_buff_len,
> +						  enqd_len, 0, unalign);
>  		return 0;
>  	}
>  
> @@ -1773,6 +1827,9 @@ static int cdnsp_align_td(struct cdnsp_device *pdev,
>  	seg->bounce_len = new_buff_len;
>  	seg->bounce_offs = enqd_len;
>  
> +	trace_cdnsp_bounce_map(preq, new_buff_len, enqd_len, seg->bounce_dma,
> +			       unalign);
> +
>  	/*
>  	 * Bounce buffer successful aligned and seg->bounce_dma will be used
>  	 * in transfer TRB as new transfer buffer address.
> @@ -2009,13 +2066,17 @@ int cdnsp_cmd_stop_ep(struct cdnsp_device *pdev, struct cdnsp_ep *pep)
>  	u32 ep_state = GET_EP_CTX_STATE(pep->out_ctx);
>  	int ret = 0;
>  
> -	if (ep_state == EP_STATE_STOPPED || ep_state == EP_STATE_DISABLED)
> +	if (ep_state == EP_STATE_STOPPED || ep_state == EP_STATE_DISABLED) {
> +		trace_cdnsp_ep_stopped_or_disabled(pep->out_ctx);
>  		goto ep_stopped;
> +	}
>  
>  	cdnsp_queue_stop_endpoint(pdev, pep->idx);
>  	cdnsp_ring_cmd_db(pdev);
>  	ret = cdnsp_wait_for_cmd_compl(pdev);
>  
> +	trace_cdnsp_handle_cmd_stop_ep(pep->out_ctx);
> +
>  ep_stopped:
>  	pep->ep_state |= EP_STOPPED;
>  	return ret;
> @@ -2029,6 +2090,8 @@ int cdnsp_cmd_flush_ep(struct cdnsp_device *pdev, struct cdnsp_ep *pep)
>  	cdnsp_ring_cmd_db(pdev);
>  	ret = cdnsp_wait_for_cmd_compl(pdev);
>  
> +	trace_cdnsp_handle_cmd_flush_ep(pep->out_ctx);
> +
>  	return ret;
>  }
>  
> diff --git a/drivers/usb/cdns3/cdnsp-trace.c b/drivers/usb/cdns3/cdnsp-trace.c
> new file mode 100644
> index 000000000000..e50ab799ad95
> --- /dev/null
> +++ b/drivers/usb/cdns3/cdnsp-trace.c
> @@ -0,0 +1,12 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Cadence CDNSP DRD Driver.
> + *
> + * Copyright (C) 2020 Cadence.
> + *
> + * Author: Pawel Laszczak <[e-mail]>
> + *
> + */
> +
> +#define CREATE_TRACE_POINTS
> +#include "cdnsp-trace.h"
> diff --git a/drivers/usb/cdns3/cdnsp-trace.h b/drivers/usb/cdns3/cdnsp-trace.h
> new file mode 100644
> index 000000000000..b68e282464d2
> --- /dev/null
> +++ b/drivers/usb/cdns3/cdnsp-trace.h
> @@ -0,0 +1,840 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Cadence CDNSP DRD Driver.
> + * Trace support header file
> + *
> + * Copyright (C) 2020 Cadence.
> + *
> + * Author: Pawel Laszczak <[e-mail]>
> + *
> + */
> +
> +#undef TRACE_SYSTEM
> +#define TRACE_SYSTEM cdnsp-dev
> +
> +/*
> + * The TRACE_SYSTEM_VAR defaults to TRACE_SYSTEM, but must be a
> + * legitimate C variable. It is not exported to user space.
> + */
> +#undef TRACE_SYSTEM_VAR
> +#define TRACE_SYSTEM_VAR cdnsp_dev
> +
> +#if !defined(__CDNSP_DEV_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
> +#define __CDNSP_DEV_TRACE_H
> +
> +#include <linux/tracepoint.h>
> +#include "cdnsp-gadget.h"
> +#include "cdnsp-debug.h"
> +
> +/*
> + * There is limitation for single buffer size in TRACEPOINT subsystem.
> + * By default TRACE_BUF_SIZE is 1024, so no all data will be logged.
> + * To show more data this must be increased. In most cases the default
> + * value is sufficient.
> + */
> +#define CDNSP_MSG_MAX 500
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_ep,
> +	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
> +	TP_ARGS(pep, stream_id),
> +	TP_STRUCT__entry(
> +		__string(name, pep->name)
> +		__field(unsigned int, state)
> +		__field(u32, stream_id)
> +		__field(u8, enabled)
> +		__field(unsigned int, num_streams)
> +		__field(int, td_count)
> +		__field(u8, first_prime_det)
> +		__field(u8, drbls_count)
> +	),
> +	TP_fast_assign(
> +		__assign_str(name, pep->name);
> +		__entry->state = pep->ep_state;
> +		__entry->stream_id = stream_id;
> +		__entry->enabled = pep->ep_state & EP_HAS_STREAMS;
> +		__entry->num_streams = pep->stream_info.num_streams;
> +		__entry->td_count = pep->stream_info.td_count;
> +		__entry->first_prime_det = pep->stream_info.first_prime_det;
> +		__entry->drbls_count = pep->stream_info.drbls_count;
> +	),
> +	TP_printk("%s: SID: %08x ep state: %x stream: enabled: %d num  %d "
> +		  "tds %d, first prime: %d drbls %d",
> +		  __get_str(name), __entry->state, __entry->stream_id,
> +		  __entry->enabled, __entry->num_streams, __entry->td_count,
> +		  __entry->first_prime_det, __entry->drbls_count)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep, cdnsp_tr_drbl,
> +	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
> +	TP_ARGS(pep, stream_id)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep, cdnsp_wait_for_prime,
> +	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
> +	TP_ARGS(pep, stream_id)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep, cdnsp_ep_list_empty_with_skip,
> +	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
> +	TP_ARGS(pep, stream_id)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep, cdnsp_ep_enable_end,
> +	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
> +	TP_ARGS(pep, stream_id)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep, cdnsp_ep_disable_end,
> +	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
> +	TP_ARGS(pep, stream_id)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep, cdnsp_ep_busy_try_halt_again,
> +	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
> +	TP_ARGS(pep, stream_id)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_enable_disable,
> +	TP_PROTO(int set),
> +	TP_ARGS(set),
> +	TP_STRUCT__entry(
> +		__field(int, set)
> +	),
> +	TP_fast_assign(
> +		__entry->set = set;
> +	),
> +	TP_printk("%s", __entry->set ? "enabled" : "disabled")
> +);
> +
> +DEFINE_EVENT(cdnsp_log_enable_disable, cdnsp_pullup,
> +	TP_PROTO(int set),
> +	TP_ARGS(set)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_enable_disable, cdnsp_u1,
> +	TP_PROTO(int set),
> +	TP_ARGS(set)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_enable_disable, cdnsp_u2,
> +	TP_PROTO(int set),
> +	TP_ARGS(set)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_enable_disable, cdnsp_lpm,
> +	TP_PROTO(int set),
> +	TP_ARGS(set)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_enable_disable, cdnsp_may_wakeup,
> +	TP_PROTO(int set),
> +	TP_ARGS(set)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_simple,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg),
> +	TP_STRUCT__entry(
> +		__string(text, msg)
> +	),
> +	TP_fast_assign(
> +		__assign_str(text, msg)
> +	),
> +	TP_printk("%s", __get_str(text))
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_exit,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_init,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_slot_id,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_cmd_drbl,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_no_room_on_ring,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep0_status_stage,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep0_data_stage,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep0_request,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep0_set_config,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep0_halted,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep_halt,
> +	TP_PROTO(char *msg),
> +	TP_ARGS(msg)
> +);
> +
> +TRACE_EVENT(cdnsp_looking_trb_in_td,
> +	TP_PROTO(dma_addr_t suspect, dma_addr_t trb_start, dma_addr_t trb_end,
> +		 dma_addr_t curr_seg, dma_addr_t end_seg),
> +	TP_ARGS(suspect, trb_start, trb_end, curr_seg, end_seg),
> +	TP_STRUCT__entry(
> +		__field(dma_addr_t, suspect)
> +		__field(dma_addr_t, trb_start)
> +		__field(dma_addr_t, trb_end)
> +		__field(dma_addr_t, curr_seg)
> +		__field(dma_addr_t, end_seg)
> +	),
> +	TP_fast_assign(
> +		__entry->suspect = suspect;
> +		__entry->trb_start = trb_start;
> +		__entry->trb_end = trb_end;
> +		__entry->curr_seg = curr_seg;
> +		__entry->end_seg = end_seg;
> +	),
> +	TP_printk("DMA: suspect event: %pad, trb-start: %pad, trb-end %pad, "
> +		  "seg-start %pad, seg-end %pad",
> +		  &__entry->suspect, &__entry->trb_start, &__entry->trb_end,
> +		  &__entry->curr_seg, &__entry->end_seg)
> +);
> +
> +TRACE_EVENT(cdnsp_port_info,
> +	TP_PROTO(__le32 __iomem *addr, u32 offset, u32 count, u32 rev),
> +	TP_ARGS(addr, offset, count, rev),
> +	TP_STRUCT__entry(
> +		__field(__le32 __iomem *, addr)
> +		__field(u32, offset)
> +		__field(u32, count)
> +		__field(u32, rev)
> +	),
> +	TP_fast_assign(
> +		__entry->addr = addr;
> +		__entry->offset = offset;
> +		__entry->count = count;
> +		__entry->rev = rev;
> +	),
> +	TP_printk("Ext Cap %p, port offset = %u, count = %u, rev = 0x%x",
> +		  __entry->addr, __entry->offset, __entry->count, __entry->rev)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_deq_state,
> +	TP_PROTO(struct cdnsp_dequeue_state *state),
> +	TP_ARGS(state),
> +	TP_STRUCT__entry(
> +		__field(int, new_cycle_state)
> +		__field(struct cdnsp_segment *, new_deq_seg)
> +		__field(dma_addr_t, deq_seg_dma)
> +		__field(union cdnsp_trb	*, new_deq_ptr)
> +		__field(dma_addr_t, deq_ptr_dma)
> +	),
> +	TP_fast_assign(
> +		__entry->new_cycle_state = state->new_cycle_state;
> +		__entry->new_deq_seg = state->new_deq_seg;
> +		__entry->deq_seg_dma = state->new_deq_seg->dma;
> +		__entry->new_deq_ptr = state->new_deq_ptr,
> +		__entry->deq_ptr_dma = cdnsp_trb_virt_to_dma(state->new_deq_seg,
> +							     state->new_deq_ptr);
> +	),
> +	TP_printk("New cycle state = 0x%x, New dequeue segment = %p (0x%pad dma), "
> +		  "New dequeue pointer = %p (0x%pad dma)",
> +		  __entry->new_cycle_state, __entry->new_deq_seg,
> +		  &__entry->deq_seg_dma, __entry->new_deq_ptr,
> +		  &__entry->deq_ptr_dma
> +	)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_deq_state, cdnsp_new_deq_state,
> +	TP_PROTO(struct cdnsp_dequeue_state *state),
> +	TP_ARGS(state)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_ctrl,
> +	TP_PROTO(struct usb_ctrlrequest *ctrl),
> +	TP_ARGS(ctrl),
> +	TP_STRUCT__entry(
> +		__field(u8, bRequestType)
> +		__field(u8, bRequest)
> +		__field(u16, wValue)
> +		__field(u16, wIndex)
> +		__field(u16, wLength)
> +		__dynamic_array(char, str, CDNSP_MSG_MAX)
> +	),
> +	TP_fast_assign(
> +		__entry->bRequestType = ctrl->bRequestType;
> +		__entry->bRequest = ctrl->bRequest;
> +		__entry->wValue = le16_to_cpu(ctrl->wValue);
> +		__entry->wIndex = le16_to_cpu(ctrl->wIndex);
> +		__entry->wLength = le16_to_cpu(ctrl->wLength);
> +	),
> +	TP_printk("%s", usb_decode_ctrl(__get_str(str), CDNSP_MSG_MAX,
> +					__entry->bRequestType,
> +					__entry->bRequest, __entry->wValue,
> +					__entry->wIndex, __entry->wLength)
> +	)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ctrl, cdnsp_ctrl_req,
> +	TP_PROTO(struct usb_ctrlrequest *ctrl),
> +	TP_ARGS(ctrl)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_bounce,
> +	TP_PROTO(struct cdnsp_request *preq, u32 new_buf_len, u32 offset,
> +		 dma_addr_t dma, unsigned int unalign),
> +	TP_ARGS(preq, new_buf_len, offset, dma, unalign),
> +	TP_STRUCT__entry(
> +		__string(name, preq->pep->name)
> +		__field(u32, new_buf_len)
> +		__field(u32, offset)
> +		__field(dma_addr_t, dma)
> +		__field(unsigned int, unalign)
> +	),
> +	TP_fast_assign(
> +		__assign_str(name, preq->pep->name);
> +		__entry->new_buf_len = new_buf_len;
> +		__entry->offset = offset;
> +		__entry->dma = dma;
> +		__entry->unalign = unalign;
> +	),
> +	TP_printk("%s buf len %d, offset %d, dma %pad, unalign %d",
> +		  __get_str(name), __entry->new_buf_len,
> +		  __entry->offset, &__entry->dma, __entry->unalign
> +	)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_bounce, cdnsp_bounce_align_td_split,
> +	TP_PROTO(struct cdnsp_request *preq, u32 new_buf_len, u32 offset,
> +		 dma_addr_t dma, unsigned int unalign),
> +	TP_ARGS(preq, new_buf_len, offset, dma, unalign)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_bounce, cdnsp_bounce_map,
> +	TP_PROTO(struct cdnsp_request *preq, u32 new_buf_len, u32 offset,
> +		 dma_addr_t dma, unsigned int unalign),
> +	TP_ARGS(preq, new_buf_len, offset, dma, unalign)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_bounce, cdnsp_bounce_unmap,
> +	TP_PROTO(struct cdnsp_request *preq, u32 new_buf_len, u32 offset,
> +		 dma_addr_t dma, unsigned int unalign),
> +	TP_ARGS(preq, new_buf_len, offset, dma, unalign)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_trb,
> +	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
> +	TP_ARGS(ring, trb),
> +	TP_STRUCT__entry(
> +		__field(u32, type)
> +		__field(u32, field0)
> +		__field(u32, field1)
> +		__field(u32, field2)
> +		__field(u32, field3)
> +		__field(union cdnsp_trb *, trb)
> +		__field(dma_addr_t, trb_dma)
> +		__dynamic_array(char, str, CDNSP_MSG_MAX)
> +	),
> +	TP_fast_assign(
> +		__entry->type = ring->type;
> +		__entry->field0 = le32_to_cpu(trb->field[0]);
> +		__entry->field1 = le32_to_cpu(trb->field[1]);
> +		__entry->field2 = le32_to_cpu(trb->field[2]);
> +		__entry->field3 = le32_to_cpu(trb->field[3]);
> +		__entry->trb = (union cdnsp_trb *)trb;
> +		__entry->trb_dma = cdnsp_trb_virt_to_dma(ring->deq_seg,
> +							 (union cdnsp_trb *)trb);
> +
> +	),
> +	TP_printk("%s: %s trb: %p(%pad)", cdnsp_ring_type_string(__entry->type),
> +		  cdnsp_decode_trb(__get_str(str), CDNSP_MSG_MAX,
> +				   __entry->field0, __entry->field1,
> +				   __entry->field2, __entry->field3),
> +				   __entry->trb, &__entry->trb_dma
> +	)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_trb, cdnsp_handle_event,
> +	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
> +	TP_ARGS(ring, trb)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_trb, cdnsp_trb_without_td,
> +	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
> +	TP_ARGS(ring, trb)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_trb, cdnsp_handle_command,
> +	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
> +	TP_ARGS(ring, trb)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_trb, cdnsp_handle_transfer,
> +	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
> +	TP_ARGS(ring, trb)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_trb, cdnsp_queue_trb,
> +	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
> +	TP_ARGS(ring, trb)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_trb, cdnsp_cmd_wait_for_compl,
> +	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
> +	TP_ARGS(ring, trb)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_trb, cdnsp_cmd_timeout,
> +	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
> +	TP_ARGS(ring, trb)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_trb, cdnsp_defered_event,
> +	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
> +	TP_ARGS(ring, trb)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_pdev,
> +	TP_PROTO(struct cdnsp_device *pdev),
> +	TP_ARGS(pdev),
> +	TP_STRUCT__entry(
> +		__field(struct cdnsp_device *, pdev)
> +		__field(struct usb_gadget *, gadget)
> +		__field(dma_addr_t, out_ctx)
> +		__field(dma_addr_t, in_ctx)
> +		__field(u8, port_num)
> +	),
> +	TP_fast_assign(
> +		__entry->pdev = pdev;
> +		__entry->gadget = &pdev->gadget;
> +		__entry->in_ctx = pdev->in_ctx.dma;
> +		__entry->out_ctx = pdev->out_ctx.dma;
> +		__entry->port_num = pdev->active_port ?
> +				pdev->active_port->port_num : 0xFF;
> +	),
> +	TP_printk("pdev %p gadget %p ctx %pad | %pad, port %d ",
> +		  __entry->pdev, __entry->gadget, &__entry->in_ctx,
> +		  &__entry->out_ctx, __entry->port_num
> +	)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_pdev, cdnsp_alloc_priv_device,
> +	TP_PROTO(struct cdnsp_device *vdev),
> +	TP_ARGS(vdev)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_pdev, cdnsp_free_priv_device,
> +	TP_PROTO(struct cdnsp_device *vdev),
> +	TP_ARGS(vdev)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_pdev, cdnsp_setup_device,
> +	TP_PROTO(struct cdnsp_device *vdev),
> +	TP_ARGS(vdev)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_pdev, cdnsp_setup_addressable_priv_device,
> +	TP_PROTO(struct cdnsp_device *vdev),
> +	TP_ARGS(vdev)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_request,
> +	TP_PROTO(struct cdnsp_request *req),
> +	TP_ARGS(req),
> +	TP_STRUCT__entry(
> +		__string(name, req->pep->name)
> +		__field(struct usb_request *, request)
> +		__field(struct cdnsp_request *, preq)
> +		__field(void *, buf)
> +		__field(unsigned int, actual)
> +		__field(unsigned int, length)
> +		__field(int, status)
> +		__field(dma_addr_t, dma)
> +		__field(unsigned int, stream_id)
> +		__field(unsigned int, zero)
> +		__field(unsigned int, short_not_ok)
> +		__field(unsigned int, no_interrupt)
> +		__field(struct scatterlist*, sg)
> +		__field(unsigned int, num_sgs)
> +		__field(unsigned int, num_mapped_sgs)
> +
> +	),
> +	TP_fast_assign(
> +		__assign_str(name, req->pep->name);
> +		__entry->request = &req->request;
> +		__entry->preq = req;
> +		__entry->buf = req->request.buf;
> +		__entry->actual = req->request.actual;
> +		__entry->length = req->request.length;
> +		__entry->status = req->request.status;
> +		__entry->dma = req->request.dma;
> +		__entry->stream_id = req->request.stream_id;
> +		__entry->zero = req->request.zero;
> +		__entry->short_not_ok = req->request.short_not_ok;
> +		__entry->no_interrupt = req->request.no_interrupt;
> +		__entry->sg = req->request.sg;
> +		__entry->num_sgs = req->request.num_sgs;
> +		__entry->num_mapped_sgs = req->request.num_mapped_sgs;
> +	),
> +	TP_printk("%s; req U:%p/P:%p, req buf %p, length %u/%u, status %d, "
> +		  "buf dma (%pad), SID %u, %s%s%s, sg %p, num_sg %d,"
> +		  " num_m_sg %d",
> +		  __get_str(name), __entry->request, __entry->preq,
> +		  __entry->buf, __entry->actual, __entry->length,
> +		  __entry->status, &__entry->dma,
> +		  __entry->stream_id, __entry->zero ? "Z" : "z",
> +		  __entry->short_not_ok ? "S" : "s",
> +		  __entry->no_interrupt ? "I" : "i",
> +		  __entry->sg, __entry->num_sgs, __entry->num_mapped_sgs
> +		)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_request, cdnsp_request_enqueue,
> +	TP_PROTO(struct cdnsp_request *req),
> +	TP_ARGS(req)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_request, cdnsp_request_enqueue_busy,
> +	TP_PROTO(struct cdnsp_request *req),
> +	TP_ARGS(req)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_request, cdnsp_request_enqueue_error,
> +	TP_PROTO(struct cdnsp_request *req),
> +	TP_ARGS(req)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_request, cdnsp_request_dequeue,
> +	TP_PROTO(struct cdnsp_request *req),
> +	TP_ARGS(req)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_request, cdnsp_request_giveback,
> +	TP_PROTO(struct cdnsp_request *req),
> +	TP_ARGS(req)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_request, cdnsp_alloc_request,
> +	TP_PROTO(struct cdnsp_request *req),
> +	TP_ARGS(req)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_request, cdnsp_free_request,
> +	TP_PROTO(struct cdnsp_request *req),
> +	TP_ARGS(req)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_ep_ctx,
> +	TP_PROTO(struct cdnsp_ep_ctx *ctx),
> +	TP_ARGS(ctx),
> +	TP_STRUCT__entry(
> +		__field(u32, info)
> +		__field(u32, info2)
> +		__field(u64, deq)
> +		__field(u32, tx_info)
> +		__dynamic_array(char, str, CDNSP_MSG_MAX)
> +	),
> +	TP_fast_assign(
> +		__entry->info = le32_to_cpu(ctx->ep_info);
> +		__entry->info2 = le32_to_cpu(ctx->ep_info2);
> +		__entry->deq = le64_to_cpu(ctx->deq);
> +		__entry->tx_info = le32_to_cpu(ctx->tx_info);
> +	),
> +	TP_printk("%s", cdnsp_decode_ep_context(__get_str(str), CDNSP_MSG_MAX,
> +						__entry->info, __entry->info2,
> +						__entry->deq, __entry->tx_info)
> +	)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_ep_disabled,
> +	TP_PROTO(struct cdnsp_ep_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_ep_stopped_or_disabled,
> +	TP_PROTO(struct cdnsp_ep_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_remove_request,
> +	TP_PROTO(struct cdnsp_ep_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_handle_cmd_stop_ep,
> +	TP_PROTO(struct cdnsp_ep_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_handle_cmd_flush_ep,
> +	TP_PROTO(struct cdnsp_ep_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_handle_cmd_set_deq_ep,
> +	TP_PROTO(struct cdnsp_ep_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_handle_cmd_reset_ep,
> +	TP_PROTO(struct cdnsp_ep_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_handle_cmd_config_ep,
> +	TP_PROTO(struct cdnsp_ep_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_slot_ctx,
> +	TP_PROTO(struct cdnsp_slot_ctx *ctx),
> +	TP_ARGS(ctx),
> +	TP_STRUCT__entry(
> +		__field(u32, info)
> +		__field(u32, info2)
> +		__field(u32, int_target)
> +		__field(u32, state)
> +	),
> +	TP_fast_assign(
> +		__entry->info = le32_to_cpu(ctx->dev_info);
> +		__entry->info2 = le32_to_cpu(ctx->dev_port);
> +		__entry->int_target = le64_to_cpu(ctx->int_target);
> +		__entry->state = le32_to_cpu(ctx->dev_state);
> +	),
> +	TP_printk("%s", cdnsp_decode_slot_context(__entry->info,
> +						  __entry->info2,
> +						  __entry->int_target,
> +						  __entry->state)
> +	)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_slot_already_in_default,
> +	TP_PROTO(struct cdnsp_slot_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_handle_cmd_enable_slot,
> +	TP_PROTO(struct cdnsp_slot_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_handle_cmd_disable_slot,
> +	TP_PROTO(struct cdnsp_slot_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_reset_device,
> +	TP_PROTO(struct cdnsp_slot_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_setup_device_slot,
> +	TP_PROTO(struct cdnsp_slot_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_handle_cmd_addr_dev,
> +	TP_PROTO(struct cdnsp_slot_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_handle_cmd_reset_dev,
> +	TP_PROTO(struct cdnsp_slot_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_handle_cmd_set_deq,
> +	TP_PROTO(struct cdnsp_slot_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_configure_endpoint,
> +	TP_PROTO(struct cdnsp_slot_ctx *ctx),
> +	TP_ARGS(ctx)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_td_info,
> +	TP_PROTO(struct cdnsp_request *preq),
> +	TP_ARGS(preq),
> +	TP_STRUCT__entry(
> +		__string(name, preq->pep->name)
> +		__field(struct usb_request *, request)
> +		__field(struct cdnsp_request *, preq)
> +		__field(union cdnsp_trb *, first_trb)
> +		__field(union cdnsp_trb *, last_trb)
> +		__field(dma_addr_t, trb_dma)
> +	),
> +	TP_fast_assign(
> +		__assign_str(name, preq->pep->name);
> +		__entry->request = &preq->request;
> +		__entry->preq = preq;
> +		__entry->first_trb = preq->td.first_trb;
> +		__entry->last_trb = preq->td.last_trb;
> +		__entry->trb_dma = cdnsp_trb_virt_to_dma(preq->td.start_seg,
> +							 preq->td.first_trb)
> +	),
> +	TP_printk("%s req/preq:  %p/%p, first trb %p[vir]/%pad(dma), last trb %p",
> +		  __get_str(name), __entry->request, __entry->preq,
> +		  __entry->first_trb, &__entry->trb_dma,
> +		  __entry->last_trb
> +		)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_td_info, cdnsp_remove_request_td,
> +	TP_PROTO(struct cdnsp_request *preq),
> +	TP_ARGS(preq)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_ring,
> +	TP_PROTO(struct cdnsp_ring *ring),
> +	TP_ARGS(ring),
> +	TP_STRUCT__entry(
> +		__field(u32, type)
> +		__field(void *, ring)
> +		__field(dma_addr_t, enq)
> +		__field(dma_addr_t, deq)
> +		__field(dma_addr_t, enq_seg)
> +		__field(dma_addr_t, deq_seg)
> +		__field(unsigned int, num_segs)
> +		__field(unsigned int, stream_id)
> +		__field(unsigned int, cycle_state)
> +		__field(unsigned int, num_trbs_free)
> +		__field(unsigned int, bounce_buf_len)
> +	),
> +	TP_fast_assign(
> +		__entry->ring = ring;
> +		__entry->type = ring->type;
> +		__entry->num_segs = ring->num_segs;
> +		__entry->stream_id = ring->stream_id;
> +		__entry->enq_seg = ring->enq_seg->dma;
> +		__entry->deq_seg = ring->deq_seg->dma;
> +		__entry->cycle_state = ring->cycle_state;
> +		__entry->num_trbs_free = ring->num_trbs_free;
> +		__entry->bounce_buf_len = ring->bounce_buf_len;
> +		__entry->enq = cdnsp_trb_virt_to_dma(ring->enq_seg,
> +						     ring->enqueue);
> +		__entry->deq = cdnsp_trb_virt_to_dma(ring->deq_seg,
> +						     ring->dequeue);
> +	),
> +	TP_printk("%s %p: enq %pad(%pad) deq %pad(%pad) segs %d stream %d"
> +		  " free_trbs %d bounce %d cycle %d",
> +		  cdnsp_ring_type_string(__entry->type), __entry->ring,
> +		  &__entry->enq, &__entry->enq_seg,
> +		  &__entry->deq, &__entry->deq_seg,
> +		  __entry->num_segs,
> +		  __entry->stream_id,
> +		  __entry->num_trbs_free,
> +		  __entry->bounce_buf_len,
> +		  __entry->cycle_state
> +		)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ring, cdnsp_ring_alloc,
> +	TP_PROTO(struct cdnsp_ring *ring),
> +	TP_ARGS(ring)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ring, cdnsp_ring_free,
> +	TP_PROTO(struct cdnsp_ring *ring),
> +	TP_ARGS(ring)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ring, cdnsp_set_stream_ring,
> +	TP_PROTO(struct cdnsp_ring *ring),
> +	TP_ARGS(ring)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ring, cdnsp_ring_expansion,
> +	TP_PROTO(struct cdnsp_ring *ring),
> +	TP_ARGS(ring)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ring, cdnsp_inc_enq,
> +	TP_PROTO(struct cdnsp_ring *ring),
> +	TP_ARGS(ring)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_ring, cdnsp_inc_deq,
> +	TP_PROTO(struct cdnsp_ring *ring),
> +	TP_ARGS(ring)
> +);
> +
> +DECLARE_EVENT_CLASS(cdnsp_log_portsc,
> +		TP_PROTO(u32 portnum, u32 portsc),
> +		TP_ARGS(portnum, portsc),
> +		TP_STRUCT__entry(
> +				__field(u32, portnum)
> +				__field(u32, portsc)
> +				__dynamic_array(char, str, CDNSP_MSG_MAX)
> +				),
> +		TP_fast_assign(
> +				__entry->portnum = portnum;
> +				__entry->portsc = portsc;
> +				),
> +		TP_printk("port-%d: %s",
> +			  __entry->portnum,
> +			  cdnsp_decode_portsc(__get_str(str), CDNSP_MSG_MAX,
> +					      __entry->portsc)
> +			)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_portsc, cdnsp_handle_port_status,
> +		TP_PROTO(u32 portnum, u32 portsc),
> +		TP_ARGS(portnum, portsc)
> +);
> +
> +DEFINE_EVENT(cdnsp_log_portsc, cdnsp_link_state_changed,
> +		TP_PROTO(u32 portnum, u32 portsc),
> +		TP_ARGS(portnum, portsc)
> +);
> +
> +TRACE_EVENT(cdnsp_stream_number,
> +	TP_PROTO(struct cdnsp_ep *pep, int num_stream_ctxs, int num_streams),
> +	TP_ARGS(pep, num_stream_ctxs, num_streams),
> +	TP_STRUCT__entry(
> +		__string(name, pep->name)
> +		__field(int, num_stream_ctxs)
> +		__field(int, num_streams)
> +	),
> +	TP_fast_assign(
> +		__entry->num_stream_ctxs = num_stream_ctxs;
> +		__entry->num_streams = num_streams;
> +	),
> +	TP_printk("%s Need %u stream ctx entries for %u stream IDs.",
> +		  __get_str(name), __entry->num_stream_ctxs,
> +		  __entry->num_streams)
> +);
> +
> +#endif /* __CDNSP_TRACE_H */
> +
> +/* this part must be outside header guard */
> +
> +#undef TRACE_INCLUDE_PATH
> +#define TRACE_INCLUDE_PATH .
> +
> +#undef TRACE_INCLUDE_FILE
> +#define TRACE_INCLUDE_FILE cdnsp-trace
> +
> +#include <trace/define_trace.h>
> -- 
> 2.17.1
>

Patch

diff --git a/drivers/usb/cdns3/Makefile b/drivers/usb/cdns3/Makefile
index a84b129f14b8..a4fdaabdbe18 100644
--- a/drivers/usb/cdns3/Makefile
+++ b/drivers/usb/cdns3/Makefile
@@ -1,6 +1,7 @@ 
 # SPDX-License-Identifier: GPL-2.0
 # define_trace.h needs to know how to find our header
 CFLAGS_trace.o					:= -I$(src)
+CFLAGS_cdnsp-trace.o				:= -I$(src)
 
 cdns-usb-common-y				:= core.o drd.o
 cdns3-y						:= cdns3-plat.o
@@ -23,3 +24,7 @@  cdnsp-udc-pci-y					:= cdnsp-pci.o
 obj-$(CONFIG_USB_CDNSP_PCI) 			+= cdnsp-udc-pci.o
 cdnsp-udc-pci-$(CONFIG_USB_CDNSP_GADGET)	+= cdnsp-ring.o cdnsp-gadget.o \
 						   cdnsp-mem.o cdnsp-ep0.o
+
+ifneq ($(CONFIG_USB_CDNSP_GADGET),)
+cdnsp-udc-pci-$(CONFIG_TRACING)			+= cdnsp-trace.o
+endif
diff --git a/drivers/usb/cdns3/cdnsp-debug.h b/drivers/usb/cdns3/cdnsp-debug.h
new file mode 100644
index 000000000000..d6345d4d2911
--- /dev/null
+++ b/drivers/usb/cdns3/cdnsp-debug.h
@@ -0,0 +1,583 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Cadence CDNSP DRD Driver.
+ *
+ * Copyright (C) 2020 Cadence.
+ *
+ * Author: Pawel Laszczak <[e-mail]>
+ *
+ */
+#ifndef __LINUX_CDNSP_DEBUG
+#define __LINUX_CDNSP_DEBUG
+
+static inline const char *cdnsp_trb_comp_code_string(u8 status)
+{
+	switch (status) {
+	case COMP_INVALID:
+		return "Invalid";
+	case COMP_SUCCESS:
+		return "Success";
+	case COMP_DATA_BUFFER_ERROR:
+		return "Data Buffer Error";
+	case COMP_BABBLE_DETECTED_ERROR:
+		return "Babble Detected";
+	case COMP_TRB_ERROR:
+		return "TRB Error";
+	case COMP_RESOURCE_ERROR:
+		return "Resource Error";
+	case COMP_NO_SLOTS_AVAILABLE_ERROR:
+		return "No Slots Available Error";
+	case COMP_INVALID_STREAM_TYPE_ERROR:
+		return "Invalid Stream Type Error";
+	case COMP_SLOT_NOT_ENABLED_ERROR:
+		return "Slot Not Enabled Error";
+	case COMP_ENDPOINT_NOT_ENABLED_ERROR:
+		return "Endpoint Not Enabled Error";
+	case COMP_SHORT_PACKET:
+		return "Short Packet";
+	case COMP_RING_UNDERRUN:
+		return "Ring Underrun";
+	case COMP_RING_OVERRUN:
+		return "Ring Overrun";
+	case COMP_VF_EVENT_RING_FULL_ERROR:
+		return "VF Event Ring Full Error";
+	case COMP_PARAMETER_ERROR:
+		return "Parameter Error";
+	case COMP_CONTEXT_STATE_ERROR:
+		return "Context State Error";
+	case COMP_EVENT_RING_FULL_ERROR:
+		return "Event Ring Full Error";
+	case COMP_INCOMPATIBLE_DEVICE_ERROR:
+		return "Incompatible Device Error";
+	case COMP_MISSED_SERVICE_ERROR:
+		return "Missed Service Error";
+	case COMP_COMMAND_RING_STOPPED:
+		return "Command Ring Stopped";
+	case COMP_COMMAND_ABORTED:
+		return "Command Aborted";
+	case COMP_STOPPED:
+		return "Stopped";
+	case COMP_STOPPED_LENGTH_INVALID:
+		return "Stopped - Length Invalid";
+	case COMP_STOPPED_SHORT_PACKET:
+		return "Stopped - Short Packet";
+	case COMP_MAX_EXIT_LATENCY_TOO_LARGE_ERROR:
+		return "Max Exit Latency Too Large Error";
+	case COMP_ISOCH_BUFFER_OVERRUN:
+		return "Isoch Buffer Overrun";
+	case COMP_EVENT_LOST_ERROR:
+		return "Event Lost Error";
+	case COMP_UNDEFINED_ERROR:
+		return "Undefined Error";
+	case COMP_INVALID_STREAM_ID_ERROR:
+		return "Invalid Stream ID Error";
+	default:
+		return "Unknown!!";
+	}
+}
+
+static inline const char *cdnsp_trb_type_string(u8 type)
+{
+	switch (type) {
+	case TRB_NORMAL:
+		return "Normal";
+	case TRB_SETUP:
+		return "Setup Stage";
+	case TRB_DATA:
+		return "Data Stage";
+	case TRB_STATUS:
+		return "Status Stage";
+	case TRB_ISOC:
+		return "Isoch";
+	case TRB_LINK:
+		return "Link";
+	case TRB_EVENT_DATA:
+		return "Event Data";
+	case TRB_TR_NOOP:
+		return "No-Op";
+	case TRB_ENABLE_SLOT:
+		return "Enable Slot Command";
+	case TRB_DISABLE_SLOT:
+		return "Disable Slot Command";
+	case TRB_ADDR_DEV:
+		return "Address Device Command";
+	case TRB_CONFIG_EP:
+		return "Configure Endpoint Command";
+	case TRB_EVAL_CONTEXT:
+		return "Evaluate Context Command";
+	case TRB_RESET_EP:
+		return "Reset Endpoint Command";
+	case TRB_STOP_RING:
+		return "Stop Ring Command";
+	case TRB_SET_DEQ:
+		return "Set TR Dequeue Pointer Command";
+	case TRB_RESET_DEV:
+		return "Reset Device Command";
+	case TRB_FORCE_HEADER:
+		return "Force Header Command";
+	case TRB_CMD_NOOP:
+		return "No-Op Command";
+	case TRB_TRANSFER:
+		return "Transfer Event";
+	case TRB_COMPLETION:
+		return "Command Completion Event";
+	case TRB_PORT_STATUS:
+		return "Port Status Change Event";
+	case TRB_HC_EVENT:
+		return "Device Controller Event";
+	case TRB_MFINDEX_WRAP:
+		return "MFINDEX Wrap Event";
+	case TRB_ENDPOINT_NRDY:
+		return "Endpoint Not ready";
+	case TRB_HALT_ENDPOINT:
+		return "Halt Endpoint";
+	case TRB_FLUSH_ENDPOINT:
+		return "FLush Endpoint";
+	default:
+		return "UNKNOWN";
+	}
+}
+
+static inline const char *cdnsp_ring_type_string(enum cdnsp_ring_type type)
+{
+	switch (type) {
+	case TYPE_CTRL:
+		return "CTRL";
+	case TYPE_ISOC:
+		return "ISOC";
+	case TYPE_BULK:
+		return "BULK";
+	case TYPE_INTR:
+		return "INTR";
+	case TYPE_STREAM:
+		return "STREAM";
+	case TYPE_COMMAND:
+		return "CMD";
+	case TYPE_EVENT:
+		return "EVENT";
+	}
+
+	return "UNKNOWN";
+}
+
+static inline char *cdnsp_slot_state_string(u32 state)
+{
+	switch (state) {
+	case SLOT_STATE_ENABLED:
+		return "enabled/disabled";
+	case SLOT_STATE_DEFAULT:
+		return "default";
+	case SLOT_STATE_ADDRESSED:
+		return "addressed";
+	case SLOT_STATE_CONFIGURED:
+		return "configured";
+	default:
+		return "reserved";
+	}
+}
+
+static inline const char *cdnsp_decode_trb(char *str, size_t size, u32 field0,
+					   u32 field1, u32 field2, u32 field3)
+{
+	int ep_id = TRB_TO_EP_INDEX(field3) - 1;
+	int type = TRB_FIELD_TO_TYPE(field3);
+	unsigned int ep_num;
+	int ret = 0;
+	u32 temp;
+
+	ep_num = DIV_ROUND_UP(ep_id, 2);
+
+	switch (type) {
+	case TRB_LINK:
+		ret += snprintf(str, size,
+				"LINK %08x%08x intr %ld type '%s' flags %c:%c:%c:%c",
+				field1, field0, GET_INTR_TARGET(field2),
+				cdnsp_trb_type_string(type),
+				field3 & TRB_IOC ? 'I' : 'i',
+				field3 & TRB_CHAIN ? 'C' : 'c',
+				field3 & TRB_TC ? 'T' : 't',
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_TRANSFER:
+	case TRB_COMPLETION:
+	case TRB_PORT_STATUS:
+	case TRB_HC_EVENT:
+		ret += snprintf(str, size,
+				"ep%d%s(%d) type '%s' TRB %08x%08x status '%s'"
+				" len %ld slot %ld flags %c:%c",
+				ep_num, ep_id % 2 ? "out" : "in",
+				TRB_TO_EP_INDEX(field3),
+				cdnsp_trb_type_string(type), field1, field0,
+				cdnsp_trb_comp_code_string(GET_COMP_CODE(field2)),
+				EVENT_TRB_LEN(field2), TRB_TO_SLOT_ID(field3),
+				field3 & EVENT_DATA ? 'E' : 'e',
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_MFINDEX_WRAP:
+		ret += snprintf(str, size, "%s: flags %c",
+				cdnsp_trb_type_string(type),
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_SETUP:
+		ret += snprintf(str, size,
+				"type '%s' bRequestType %02x bRequest %02x "
+				"wValue %02x%02x wIndex %02x%02x wLength %d "
+				"length %ld TD size %ld intr %ld Setup ID %ld "
+				"flags %c:%c:%c",
+				cdnsp_trb_type_string(type),
+				field0 & 0xff,
+				(field0 & 0xff00) >> 8,
+				(field0 & 0xff000000) >> 24,
+				(field0 & 0xff0000) >> 16,
+				(field1 & 0xff00) >> 8,
+				field1 & 0xff,
+				(field1 & 0xff000000) >> 16 |
+				(field1 & 0xff0000) >> 16,
+				TRB_LEN(field2), GET_TD_SIZE(field2),
+				GET_INTR_TARGET(field2),
+				TRB_SETUPID_TO_TYPE(field3),
+				field3 & TRB_IDT ? 'D' : 'd',
+				field3 & TRB_IOC ? 'I' : 'i',
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_DATA:
+		ret += snprintf(str, size,
+				"type '%s' Buffer %08x%08x length %ld TD size %ld "
+				"intr %ld flags %c:%c:%c:%c:%c:%c:%c",
+				cdnsp_trb_type_string(type),
+				field1, field0, TRB_LEN(field2),
+				GET_TD_SIZE(field2),
+				GET_INTR_TARGET(field2),
+				field3 & TRB_IDT ? 'D' : 'i',
+				field3 & TRB_IOC ? 'I' : 'i',
+				field3 & TRB_CHAIN ? 'C' : 'c',
+				field3 & TRB_NO_SNOOP ? 'S' : 's',
+				field3 & TRB_ISP ? 'I' : 'i',
+				field3 & TRB_ENT ? 'E' : 'e',
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_STATUS:
+		ret += snprintf(str, size,
+				"Buffer %08x%08x length %ld TD size %ld intr"
+				"%ld type '%s' flags %c:%c:%c:%c",
+				field1, field0, TRB_LEN(field2),
+				GET_TD_SIZE(field2),
+				GET_INTR_TARGET(field2),
+				cdnsp_trb_type_string(type),
+				field3 & TRB_IOC ? 'I' : 'i',
+				field3 & TRB_CHAIN ? 'C' : 'c',
+				field3 & TRB_ENT ? 'E' : 'e',
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_NORMAL:
+	case TRB_ISOC:
+	case TRB_EVENT_DATA:
+	case TRB_TR_NOOP:
+		ret += snprintf(str, size,
+				"type '%s' Buffer %08x%08x length %ld "
+				"TD size %ld intr %ld "
+				"flags %c:%c:%c:%c:%c:%c:%c:%c:%c",
+				cdnsp_trb_type_string(type),
+				field1, field0, TRB_LEN(field2),
+				GET_TD_SIZE(field2),
+				GET_INTR_TARGET(field2),
+				field3 & TRB_BEI ? 'B' : 'b',
+				field3 & TRB_IDT ? 'T' : 't',
+				field3 & TRB_IOC ? 'I' : 'i',
+				field3 & TRB_CHAIN ? 'C' : 'c',
+				field3 & TRB_NO_SNOOP ? 'S' : 's',
+				field3 & TRB_ISP ? 'I' : 'i',
+				field3 & TRB_ENT ? 'E' : 'e',
+				field3 & TRB_CYCLE ? 'C' : 'c',
+				!(field3 & TRB_EVENT_INVALIDATE) ? 'V' : 'v');
+		break;
+	case TRB_CMD_NOOP:
+	case TRB_ENABLE_SLOT:
+		ret += snprintf(str, size, "%s: flags %c",
+				cdnsp_trb_type_string(type),
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_DISABLE_SLOT:
+		ret += snprintf(str, size, "%s: slot %ld flags %c",
+				cdnsp_trb_type_string(type),
+				TRB_TO_SLOT_ID(field3),
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_ADDR_DEV:
+		ret += snprintf(str, size,
+				"%s: ctx %08x%08x slot %ld flags %c:%c",
+				cdnsp_trb_type_string(type), field1, field0,
+				TRB_TO_SLOT_ID(field3),
+				field3 & TRB_BSR ? 'B' : 'b',
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_CONFIG_EP:
+		ret += snprintf(str, size,
+				"%s: ctx %08x%08x slot %ld flags %c:%c",
+				cdnsp_trb_type_string(type), field1, field0,
+				TRB_TO_SLOT_ID(field3),
+				field3 & TRB_DC ? 'D' : 'd',
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_EVAL_CONTEXT:
+		ret += snprintf(str, size,
+				"%s: ctx %08x%08x slot %ld flags %c",
+				cdnsp_trb_type_string(type), field1, field0,
+				TRB_TO_SLOT_ID(field3),
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_RESET_EP:
+	case TRB_HALT_ENDPOINT:
+	case TRB_FLUSH_ENDPOINT:
+		ret += snprintf(str, size,
+				"%s: ep%d%s(%d) ctx %08x%08x slot %ld flags %c",
+				cdnsp_trb_type_string(type),
+				ep_num, ep_id % 2 ? "out" : "in",
+				TRB_TO_EP_INDEX(field3), field1, field0,
+				TRB_TO_SLOT_ID(field3),
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_STOP_RING:
+		ret += snprintf(str, size,
+				"%s: ep%d%s(%d) slot %ld sp %d flags %c",
+				cdnsp_trb_type_string(type),
+				ep_num, ep_id % 2 ? "out" : "in",
+				TRB_TO_EP_INDEX(field3),
+				TRB_TO_SLOT_ID(field3),
+				TRB_TO_SUSPEND_PORT(field3),
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_SET_DEQ:
+		ret += snprintf(str, size,
+				"%s: ep%d%s(%d) deq %08x%08x stream %ld slot %ld  flags %c",
+				cdnsp_trb_type_string(type),
+				ep_num, ep_id % 2 ? "out" : "in",
+				TRB_TO_EP_INDEX(field3), field1, field0,
+				TRB_TO_STREAM_ID(field2),
+				TRB_TO_SLOT_ID(field3),
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_RESET_DEV:
+		ret += snprintf(str, size, "%s: slot %ld flags %c",
+				cdnsp_trb_type_string(type),
+				TRB_TO_SLOT_ID(field3),
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	case TRB_ENDPOINT_NRDY:
+		temp  = TRB_TO_HOST_STREAM(field2);
+
+		ret += snprintf(str, size,
+				"%s: ep%d%s(%d) H_SID %x%s%s D_SID %lx flags %c:%c",
+				cdnsp_trb_type_string(type),
+				ep_num, ep_id % 2 ? "out" : "in",
+				TRB_TO_EP_INDEX(field3), temp,
+				temp == STREAM_PRIME_ACK ? "(PRIME)" : "",
+				temp == STREAM_REJECTED ? "(REJECTED)" : "",
+				TRB_TO_DEV_STREAM(field0),
+				field3 & TRB_STAT ? 'S' : 's',
+				field3 & TRB_CYCLE ? 'C' : 'c');
+		break;
+	default:
+		ret += snprintf(str, size,
+				"type '%s' -> raw %08x %08x %08x %08x",
+				cdnsp_trb_type_string(type),
+				field0, field1, field2, field3);
+	}
+
+	return str;
+}
+
+static inline const char *cdnsp_decode_slot_context(u32 info, u32 info2,
+						    u32 int_target, u32 state)
+{
+	static char str[1024];
+	int ret = 0;
+	u32 speed;
+	char *s;
+
+	speed = info & DEV_SPEED;
+
+	switch (speed) {
+	case SLOT_SPEED_FS:
+		s = "full-speed";
+		break;
+	case SLOT_SPEED_HS:
+		s = "high-speed";
+		break;
+	case SLOT_SPEED_SS:
+		s = "super-speed";
+		break;
+	case SLOT_SPEED_SSP:
+		s = "super-speed plus";
+		break;
+	default:
+		s = "UNKNOWN speed";
+	}
+
+	ret = sprintf(str, "%s Ctx Entries %ld",
+		      s, (info & LAST_CTX_MASK) >> 27);
+
+	ret += sprintf(str + ret, " [Intr %ld] Addr %ld State %s",
+		       GET_INTR_TARGET(int_target), state & DEV_ADDR_MASK,
+		       cdnsp_slot_state_string(GET_SLOT_STATE(state)));
+
+	return str;
+}
+
+static inline const char *cdnsp_portsc_link_state_string(u32 portsc)
+{
+	switch (portsc & PORT_PLS_MASK) {
+	case XDEV_U0:
+		return "U0";
+	case XDEV_U1:
+		return "U1";
+	case XDEV_U2:
+		return "U2";
+	case XDEV_U3:
+		return "U3";
+	case XDEV_DISABLED:
+		return "Disabled";
+	case XDEV_RXDETECT:
+		return "RxDetect";
+	case XDEV_INACTIVE:
+		return "Inactive";
+	case XDEV_POLLING:
+		return "Polling";
+	case XDEV_RECOVERY:
+		return "Recovery";
+	case XDEV_HOT_RESET:
+		return "Hot Reset";
+	case XDEV_COMP_MODE:
+		return "Compliance mode";
+	case XDEV_TEST_MODE:
+		return "Test mode";
+	case XDEV_RESUME:
+		return "Resume";
+	default:
+		break;
+	}
+
+	return "Unknown";
+}
+
+static inline const char *cdnsp_decode_portsc(char *str, size_t size,
+					      u32 portsc)
+{
+	int ret;
+
+	ret = snprintf(str, size, "%s %s %s Link:%s PortSpeed:%d ",
+		       portsc & PORT_POWER ? "Powered" : "Powered-off",
+		       portsc & PORT_CONNECT ? "Connected" : "Not-connected",
+		       portsc & PORT_PED ? "Enabled" : "Disabled",
+		       cdnsp_portsc_link_state_string(portsc),
+		       DEV_PORT_SPEED(portsc));
+
+	if (portsc & PORT_RESET)
+		ret += snprintf(str + ret, size - ret, "In-Reset ");
+
+	ret += snprintf(str + ret, size - ret, "Change: ");
+	if (portsc & PORT_CSC)
+		ret += snprintf(str + ret, size - ret, "CSC ");
+	if (portsc & PORT_WRC)
+		ret += snprintf(str + ret, size - ret, "WRC ");
+	if (portsc & PORT_RC)
+		ret += snprintf(str + ret, size - ret, "PRC ");
+	if (portsc & PORT_PLC)
+		ret += snprintf(str + ret, size - ret, "PLC ");
+	if (portsc & PORT_CEC)
+		ret += snprintf(str + ret, size - ret, "CEC ");
+	ret += snprintf(str + ret, size - ret, "Wake: ");
+	if (portsc & PORT_WKCONN_E)
+		ret += snprintf(str + ret, size - ret, "WCE ");
+	if (portsc & PORT_WKDISC_E)
+		ret += snprintf(str + ret, size - ret, "WDE ");
+
+	return str;
+}
+
+static inline const char *cdnsp_ep_state_string(u8 state)
+{
+	switch (state) {
+	case EP_STATE_DISABLED:
+		return "disabled";
+	case EP_STATE_RUNNING:
+		return "running";
+	case EP_STATE_HALTED:
+		return "halted";
+	case EP_STATE_STOPPED:
+		return "stopped";
+	case EP_STATE_ERROR:
+		return "error";
+	default:
+		return "INVALID";
+	}
+}
+
+static inline const char *cdnsp_ep_type_string(u8 type)
+{
+	switch (type) {
+	case ISOC_OUT_EP:
+		return "Isoc OUT";
+	case BULK_OUT_EP:
+		return "Bulk OUT";
+	case INT_OUT_EP:
+		return "Int OUT";
+	case CTRL_EP:
+		return "Ctrl";
+	case ISOC_IN_EP:
+		return "Isoc IN";
+	case BULK_IN_EP:
+		return "Bulk IN";
+	case INT_IN_EP:
+		return "Int IN";
+	default:
+		return "INVALID";
+	}
+}
+
+static inline const char *cdnsp_decode_ep_context(char *str, size_t size,
+						  u32 info, u32 info2,
+						  u64 deq, u32 tx_info)
+{
+	u8 max_pstr, ep_state, interval, ep_type, burst, cerr, mult;
+	bool lsa, hid;
+	u16 maxp, avg;
+	u32 esit;
+	int ret;
+
+	esit = CTX_TO_MAX_ESIT_PAYLOAD_HI(info) << 16 |
+	       CTX_TO_MAX_ESIT_PAYLOAD_LO(tx_info);
+
+	ep_state = info & EP_STATE_MASK;
+	max_pstr = CTX_TO_EP_MAXPSTREAMS(info);
+	interval = CTX_TO_EP_INTERVAL(info);
+	mult = CTX_TO_EP_MULT(info) + 1;
+	lsa = !!(info & EP_HAS_LSA);
+
+	cerr = (info2 & (3 << 1)) >> 1;
+	ep_type = CTX_TO_EP_TYPE(info2);
+	hid = !!(info2 & (1 << 7));
+	burst = CTX_TO_MAX_BURST(info2);
+	maxp = MAX_PACKET_DECODED(info2);
+
+	avg = EP_AVG_TRB_LENGTH(tx_info);
+
+	ret = snprintf(str, size, "State %s mult %d max P. Streams %d %s",
+		       cdnsp_ep_state_string(ep_state), mult,
+		       max_pstr, lsa ? "LSA " : "");
+
+	ret += snprintf(str + ret, size - ret,
+			"interval %d us max ESIT payload %d CErr %d ",
+			(1 << interval) * 125, esit, cerr);
+
+	ret += snprintf(str + ret, size - ret,
+			"Type %s %sburst %d maxp %d deq %016llx ",
+			cdnsp_ep_type_string(ep_type), hid ? "HID" : "",
+			burst, maxp, deq);
+
+	ret += snprintf(str + ret, size - ret, "avg trb len %d", avg);
+
+	return str;
+}
+
+#endif /*__LINUX_CDNSP_DEBUG*/
diff --git a/drivers/usb/cdns3/cdnsp-ep0.c b/drivers/usb/cdns3/cdnsp-ep0.c
index 6235a7e4e5da..13771a7087ef 100644
--- a/drivers/usb/cdns3/cdnsp-ep0.c
+++ b/drivers/usb/cdns3/cdnsp-ep0.c
@@ -13,6 +13,7 @@ 
 #include <linux/list.h>
 
 #include "cdnsp-gadget.h"
+#include "cdnsp-trace.h"
 
 static void cdnsp_ep0_stall(struct cdnsp_device *pdev)
 {
@@ -23,11 +24,13 @@  static void cdnsp_ep0_stall(struct cdnsp_device *pdev)
 	preq = next_request(&pep->pending_list);
 
 	if (pdev->three_stage_setup) {
+		trace_cdnsp_ep0_data_stage("send stall");
 		cdnsp_halt_endpoint(pdev, pep, true);
 
 		if (preq)
 			cdnsp_gadget_giveback(pep, preq, -ECONNRESET);
 	} else {
+		trace_cdnsp_ep0_status_stage("send stall");
 		pep->ep_state |= EP0_HALTED_STATUS;
 
 		if (preq)
@@ -42,6 +45,8 @@  static int cdnsp_ep0_delegate_req(struct cdnsp_device *pdev,
 {
 	int ret;
 
+	trace_cdnsp_ep0_request("delagete");
+
 	spin_unlock(&pdev->lock);
 	ret = pdev->gadget_driver->setup(&pdev->gadget, ctrl);
 	spin_lock(&pdev->lock);
@@ -60,8 +65,10 @@  static int cdnsp_ep0_set_config(struct cdnsp_device *pdev,
 
 	switch (state) {
 	case USB_STATE_ADDRESS:
+		trace_cdnsp_ep0_set_config("from Address state");
 		break;
 	case USB_STATE_CONFIGURED:
+		trace_cdnsp_ep0_set_config("from Configured state");
 		break;
 	default:
 		dev_err(pdev->dev, "Set Configuration - bad device state\n");
@@ -123,6 +130,7 @@  static int cdnsp_ep0_set_address(struct cdnsp_device *pdev,
 
 int cdnsp_status_stage(struct cdnsp_device *pdev)
 {
+	trace_cdnsp_ep0_status_stage("preparing");
 	pdev->ep0_stage = CDNSP_STATUS_STAGE;
 	pdev->ep0_preq.request.length = 0;
 
@@ -212,18 +220,21 @@  static int cdnsp_ep0_handle_feature_device(struct cdnsp_device *pdev,
 	switch (le16_to_cpu(ctrl->wValue)) {
 	case USB_DEVICE_REMOTE_WAKEUP:
 		pdev->may_wakeup = !!set;
+		trace_cdnsp_may_wakeup(set);
 		break;
 	case USB_DEVICE_U1_ENABLE:
 		if (state != USB_STATE_CONFIGURED || speed < USB_SPEED_SUPER)
 			return -EINVAL;
 
 		pdev->u1_allowed = !!set;
+		trace_cdnsp_u1(set);
 		break;
 	case USB_DEVICE_U2_ENABLE:
 		if (state != USB_STATE_CONFIGURED || speed < USB_SPEED_SUPER)
 			return -EINVAL;
 
 		pdev->u2_allowed = !!set;
+		trace_cdnsp_u2(set);
 		break;
 	case USB_DEVICE_LTM_ENABLE:
 		return -EINVAL;
@@ -427,6 +438,8 @@  void cdnsp_setup_analyze(struct cdnsp_device *pdev)
 	int ret = 0;
 	__le16 len;
 
+	trace_cdnsp_ctrl_req(ctrl);
+
 	if (!pdev->gadget_driver)
 		goto out;
 
@@ -437,8 +450,10 @@  void cdnsp_setup_analyze(struct cdnsp_device *pdev)
 	}
 
 	/* Restore the ep0 to Stopped/Running state. */
-	if (pdev->eps[0].ep_state & EP_HALTED)
+	if (pdev->eps[0].ep_state & EP_HALTED) {
+		trace_cdnsp_ep0_halted("Restore to normal state");
 		cdnsp_halt_endpoint(pdev, &pdev->eps[0], 0);
+	}
 
 	/*
 	 * Finishing previous SETUP transfer by removing request from
@@ -447,6 +462,7 @@  void cdnsp_setup_analyze(struct cdnsp_device *pdev)
 	if (!list_empty(&pdev->eps[0].pending_list)) {
 		struct cdnsp_request	*req;
 
+		trace_cdnsp_ep0_request("Remove previous");
 		req = next_request(&pdev->eps[0].pending_list);
 		cdnsp_ep_dequeue(&pdev->eps[0], req);
 	}
@@ -468,8 +484,10 @@  void cdnsp_setup_analyze(struct cdnsp_device *pdev)
 	if (!len)
 		pdev->ep0_stage = CDNSP_STATUS_STAGE;
 
-	if (ret == USB_GADGET_DELAYED_STATUS)
+	if (ret == USB_GADGET_DELAYED_STATUS) {
+		trace_cdnsp_ep0_status_stage("delayed");
 		return;
+	}
 out:
 	if (ret < 0)
 		cdnsp_ep0_stall(pdev);
diff --git a/drivers/usb/cdns3/cdnsp-gadget.c b/drivers/usb/cdns3/cdnsp-gadget.c
index 1366c3686331..10abad16c26d 100644
--- a/drivers/usb/cdns3/cdnsp-gadget.c
+++ b/drivers/usb/cdns3/cdnsp-gadget.c
@@ -23,6 +23,7 @@ 
 #include "gadget-export.h"
 #include "drd.h"
 #include "cdnsp-gadget.h"
+#include "cdnsp-trace.h"
 
 unsigned int cdnsp_port_speed(unsigned int port_status)
 {
@@ -100,6 +101,7 @@  void cdnsp_set_link_state(struct cdnsp_device *pdev,
 			  __le32 __iomem *port_regs,
 			  u32 link_state)
 {
+	int port_num = 0xFF;
 	u32 temp;
 
 	temp = readl(port_regs);
@@ -110,7 +112,12 @@  void cdnsp_set_link_state(struct cdnsp_device *pdev,
 	temp &= ~PORT_PLS_MASK;
 	temp |= PORT_LINK_STROBE | link_state;
 
+	if (pdev->active_port)
+		port_num = pdev->active_port->port_num;
+
+	trace_cdnsp_handle_port_status(port_num, readl(port_regs));
 	writel(temp, port_regs);
+	trace_cdnsp_link_state_changed(port_num, readl(port_regs));
 }
 
 static void cdnsp_disable_port(struct cdnsp_device *pdev,
@@ -230,6 +237,8 @@  static int cdnsp_start(struct cdnsp_device *pdev)
 	temp |= (CMD_R_S | CMD_DEVEN);
 	writel(temp, &pdev->op_regs->command);
 
+	trace_cdnsp_init("Turn on controller");
+
 	pdev->cdnsp_state = 0;
 
 	/*
@@ -339,8 +348,10 @@  int cdnsp_ep_enqueue(struct cdnsp_ep *pep, struct cdnsp_request *preq)
 	struct usb_request *request;
 	int ret;
 
-	if (preq->epnum == 0 && !list_empty(&pep->pending_list))
+	if (preq->epnum == 0 && !list_empty(&pep->pending_list)) {
+		trace_cdnsp_request_enqueue_busy(preq);
 		return -EBUSY;
+	}
 
 	request = &preq->request;
 	request->actual = 0;
@@ -350,11 +361,15 @@  int cdnsp_ep_enqueue(struct cdnsp_ep *pep, struct cdnsp_request *preq)
 	preq->td.drbl = 0;
 
 	ret = usb_gadget_map_request_by_dev(pdev->dev, request, pep->direction);
-	if (ret)
+	if (ret) {
+		trace_cdnsp_request_enqueue_error(preq);
 		return ret;
+	}
 
 	list_add_tail(&preq->list, &pep->pending_list);
 
+	trace_cdnsp_request_enqueue(preq);
+
 	switch (usb_endpoint_type(pep->endpoint.desc)) {
 	case USB_ENDPOINT_XFER_CONTROL:
 		ret = cdnsp_queue_ctrl_tx(pdev, preq);
@@ -376,6 +391,7 @@  int cdnsp_ep_enqueue(struct cdnsp_ep *pep, struct cdnsp_request *preq)
 	usb_gadget_unmap_request_by_dev(pdev->dev, &preq->request,
 					pep->direction);
 	list_del(&preq->list);
+	trace_cdnsp_request_enqueue_error(preq);
 
 	return ret;
 }
@@ -410,6 +426,8 @@  int cdnsp_ep_dequeue(struct cdnsp_ep *pep, struct cdnsp_request *preq)
 	struct cdnsp_device *pdev = pep->pdev;
 	int ret;
 
+	trace_cdnsp_request_dequeue(preq);
+
 	if (GET_EP_CTX_STATE(pep->out_ctx) == EP_STATE_RUNNING) {
 		ret = cdnsp_cmd_stop_ep(pdev, pep);
 		if (ret)
@@ -516,11 +534,14 @@  int cdnsp_wait_for_cmd_compl(struct cdnsp_device *pdev)
 	cmd_trb = pdev->cmd.command_trb;
 	pdev->cmd.status = 0;
 
+	trace_cdnsp_cmd_wait_for_compl(pdev->cmd_ring, &cmd_trb->generic);
+
 	ret = readl_poll_timeout_atomic(&pdev->op_regs->cmd_ring, val,
 					!CMD_RING_BUSY(val), 1,
 					CDNSP_CMD_TIMEOUT);
 	if (ret) {
 		dev_err(pdev->dev, "ERR: Timeout while waiting for command\n");
+		trace_cdnsp_cmd_timeout(pdev->cmd_ring, &cmd_trb->generic);
 		pdev->cdnsp_state = CDNSP_STATE_DYING;
 		return -ETIMEDOUT;
 	}
@@ -562,6 +583,8 @@  int cdnsp_wait_for_cmd_compl(struct cdnsp_device *pdev)
 			continue;
 		}
 
+		trace_cdnsp_handle_command(pdev->cmd_ring, &cmd_trb->generic);
+
 		pdev->cmd.status = GET_COMP_CODE(le32_to_cpu(event->event_cmd.status));
 		if (pdev->cmd.status == COMP_SUCCESS)
 			return 0;
@@ -576,6 +599,8 @@  int cdnsp_halt_endpoint(struct cdnsp_device *pdev,
 {
 	int ret;
 
+	trace_cdnsp_ep_halt(value ? "Set" : "Clear");
+
 	if (value) {
 		ret = cdnsp_cmd_stop_ep(pdev, pep);
 		if (ret)
@@ -596,6 +621,8 @@  int cdnsp_halt_endpoint(struct cdnsp_device *pdev,
 		cdnsp_queue_reset_ep(pdev, pep->idx);
 		cdnsp_ring_cmd_db(pdev);
 		ret = cdnsp_wait_for_cmd_compl(pdev);
+		trace_cdnsp_handle_cmd_reset_ep(pep->out_ctx);
+
 		if (ret)
 			return ret;
 
@@ -649,6 +676,9 @@  static int cdnsp_update_eps_configuration(struct cdnsp_device *pdev,
 	    (ep_sts != EP_STATE_DISABLED && ctrl_ctx->drop_flags))
 		ret = cdnsp_configure_endpoint(pdev);
 
+	trace_cdnsp_configure_endpoint(cdnsp_get_slot_ctx(&pdev->out_ctx));
+	trace_cdnsp_handle_cmd_config_ep(pep->out_ctx);
+
 	cdnsp_zero_in_ctx(pdev);
 
 	return ret;
@@ -673,6 +703,7 @@  int cdnsp_reset_device(struct cdnsp_device *pdev)
 	/* If device is not setup, there is no point in resetting it. */
 	slot_ctx = cdnsp_get_slot_ctx(&pdev->out_ctx);
 	slot_state = GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state));
+	trace_cdnsp_reset_device(slot_ctx);
 
 	if (slot_state <= SLOT_STATE_DEFAULT &&
 	    pdev->eps[0].ep_state & EP_HALTED) {
@@ -700,6 +731,8 @@  int cdnsp_reset_device(struct cdnsp_device *pdev)
 	for (i = 1; i < 31; ++i)
 		pdev->eps[i].ep_state |= EP_STOPPED;
 
+	trace_cdnsp_handle_cmd_reset_dev(slot_ctx);
+
 	if (ret)
 		dev_err(pdev->dev, "Reset device failed with error code %d",
 			ret);
@@ -756,6 +789,8 @@  int cdnsp_alloc_streams(struct cdnsp_device *pdev, struct cdnsp_ep *pep)
 	/* The stream context array size must be a power of two */
 	num_stream_ctxs = roundup_pow_of_two(num_streams);
 
+	trace_cdnsp_stream_number(pep, num_stream_ctxs, num_streams);
+
 	ret = cdnsp_alloc_stream_info(pdev, pep, num_stream_ctxs, num_streams);
 	if (ret)
 		return ret;
@@ -781,6 +816,8 @@  int cdnsp_disable_slot(struct cdnsp_device *pdev)
 	pdev->slot_id = 0;
 	pdev->active_port = NULL;
 
+	trace_cdnsp_handle_cmd_disable_slot(cdnsp_get_slot_ctx(&pdev->out_ctx));
+
 	memset(pdev->in_ctx.bytes, 0, CDNSP_CTX_SIZE);
 	memset(pdev->out_ctx.bytes, 0, CDNSP_CTX_SIZE);
 
@@ -804,11 +841,14 @@  int cdnsp_enable_slot(struct cdnsp_device *pdev)
 	cdnsp_ring_cmd_db(pdev);
 	ret = cdnsp_wait_for_cmd_compl(pdev);
 	if (ret)
-		return ret;
+		goto show_trace;
 
 	pdev->slot_id = 1;
 
-	return 0;
+show_trace:
+	trace_cdnsp_handle_cmd_enable_slot(cdnsp_get_slot_ctx(&pdev->out_ctx));
+
+	return ret;
 }
 
 /*
@@ -822,8 +862,10 @@  int cdnsp_setup_device(struct cdnsp_device *pdev, enum cdnsp_setup_dev setup)
 	int dev_state = 0;
 	int ret;
 
-	if (!pdev->slot_id)
+	if (!pdev->slot_id) {
+		trace_cdnsp_slot_id("incorrect");
 		return -EINVAL;
+	}
 
 	if (!pdev->active_port->port_num)
 		return -EINVAL;
@@ -831,8 +873,10 @@  int cdnsp_setup_device(struct cdnsp_device *pdev, enum cdnsp_setup_dev setup)
 	slot_ctx = cdnsp_get_slot_ctx(&pdev->out_ctx);
 	dev_state = GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state));
 
-	if (setup == SETUP_CONTEXT_ONLY && dev_state == SLOT_STATE_DEFAULT)
+	if (setup == SETUP_CONTEXT_ONLY && dev_state == SLOT_STATE_DEFAULT) {
+		trace_cdnsp_slot_already_in_default(slot_ctx);
 		return 0;
+	}
 
 	slot_ctx = cdnsp_get_slot_ctx(&pdev->in_ctx);
 	ctrl_ctx = cdnsp_get_input_control_ctx(&pdev->in_ctx);
@@ -848,10 +892,14 @@  int cdnsp_setup_device(struct cdnsp_device *pdev, enum cdnsp_setup_dev setup)
 	ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG);
 	ctrl_ctx->drop_flags = 0;
 
+	trace_cdnsp_setup_device_slot(slot_ctx);
+
 	cdnsp_queue_address_device(pdev, pdev->in_ctx.dma, setup);
 	cdnsp_ring_cmd_db(pdev);
 	ret = cdnsp_wait_for_cmd_compl(pdev);
 
+	trace_cdnsp_handle_cmd_addr_dev(cdnsp_get_slot_ctx(&pdev->out_ctx));
+
 	/* Zero the input context control for later use. */
 	ctrl_ctx->add_flags = 0;
 	ctrl_ctx->drop_flags = 0;
@@ -866,6 +914,8 @@  void cdnsp_set_usb2_hardware_lpm(struct cdnsp_device *pdev,
 	if (pdev->active_port != &pdev->usb2_port || !pdev->gadget.lpm_capable)
 		return;
 
+	trace_cdnsp_lpm(enable);
+
 	if (enable)
 		writel(PORT_BESL(CDNSP_DEFAULT_BESL) | PORT_L1S_NYET | PORT_HLE,
 		       &pdev->active_port->regs->portpmsc);
@@ -945,6 +995,7 @@  static int cdnsp_gadget_ep_enable(struct usb_ep *ep,
 	pep->ep_state &= ~EP_STOPPED;
 
 unlock:
+	trace_cdnsp_ep_enable_end(pep, 0);
 	spin_unlock_irqrestore(&pdev->lock, flags);
 
 	return ret;
@@ -1001,6 +1052,7 @@  static int cdnsp_gadget_ep_disable(struct usb_ep *ep)
 	pep->ep_state |= EP_STOPPED;
 
 finish:
+	trace_cdnsp_ep_disable_end(pep, 0);
 	spin_unlock_irqrestore(&pdev->lock, flags);
 
 	return ret;
@@ -1019,6 +1071,8 @@  static struct usb_request *cdnsp_gadget_ep_alloc_request(struct usb_ep *ep,
 	preq->epnum = pep->number;
 	preq->pep = pep;
 
+	trace_cdnsp_alloc_request(preq);
+
 	return &preq->request;
 }
 
@@ -1027,6 +1081,7 @@  static void cdnsp_gadget_ep_free_request(struct usb_ep *ep,
 {
 	struct cdnsp_request *preq = to_cdnsp_request(request);
 
+	trace_cdnsp_free_request(preq);
 	kfree(preq);
 }
 
@@ -1095,6 +1150,7 @@  static int cdnsp_gadget_ep_set_halt(struct usb_ep *ep, int value)
 	preq = next_request(&pep->pending_list);
 	if (value) {
 		if (preq) {
+			trace_cdnsp_ep_busy_try_halt_again(pep, 0);
 			ret = -EAGAIN;
 			goto done;
 		}
@@ -1158,6 +1214,8 @@  void cdnsp_gadget_giveback(struct cdnsp_ep *pep,
 	usb_gadget_unmap_request_by_dev(pdev->dev, &preq->request,
 					preq->direction);
 
+	trace_cdnsp_request_giveback(preq);
+
 	if (preq != &pdev->ep0_preq) {
 		spin_unlock(&pdev->lock);
 		usb_gadget_giveback_request(&pep->endpoint, &preq->request);
@@ -1238,6 +1296,7 @@  static int cdnsp_run(struct cdnsp_device *pdev,
 	temp = readl(&pdev->ir_set->irq_pending);
 	writel(IMAN_IE_SET(temp), &pdev->ir_set->irq_pending);
 
+	trace_cdnsp_init("Controller ready to work");
 	return 0;
 err:
 	cdnsp_halt(pdev);
@@ -1390,6 +1449,8 @@  static void cdnsp_stop(struct cdnsp_device *pdev)
 
 	cdnsp_consume_all_events(pdev);
 	cdnsp_clear_cmd_ring(pdev);
+
+	trace_cdnsp_exit("Controller stopped.");
 }
 
 /*
@@ -1471,6 +1532,8 @@  static int cdnsp_gadget_pullup(struct usb_gadget *gadget, int is_on)
 	struct cdnsp_device *pdev = gadget_to_cdnsp(gadget);
 	struct cdns *cdns = dev_get_drvdata(pdev->dev);
 
+	trace_cdnsp_pullup(is_on);
+
 	if (!is_on) {
 		cdnsp_reset_device(pdev);
 		cdns_clear_vbus(cdns);
diff --git a/drivers/usb/cdns3/cdnsp-mem.c b/drivers/usb/cdns3/cdnsp-mem.c
index 3487367c1bb4..4b16ae7f775d 100644
--- a/drivers/usb/cdns3/cdnsp-mem.c
+++ b/drivers/usb/cdns3/cdnsp-mem.c
@@ -16,6 +16,7 @@ 
 #include <linux/usb.h>
 
 #include "cdnsp-gadget.h"
+#include "cdnsp-trace.h"
 
 static void cdnsp_free_stream_info(struct cdnsp_device *pdev,
 				   struct cdnsp_ep *pep);
@@ -281,6 +282,8 @@  static void cdnsp_ring_free(struct cdnsp_device *pdev, struct cdnsp_ring *ring)
 	if (!ring)
 		return;
 
+	trace_cdnsp_ring_free(ring);
+
 	if (ring->first_seg) {
 		if (ring->type == TYPE_STREAM)
 			cdnsp_remove_stream_mapping(ring);
@@ -397,7 +400,7 @@  static struct cdnsp_ring *cdnsp_ring_alloc(struct cdnsp_device *pdev,
 			cpu_to_le32(LINK_TOGGLE);
 
 	cdnsp_initialize_ring_info(ring);
-
+	trace_cdnsp_ring_alloc(ring);
 	return ring;
 fail:
 	kfree(ring);
@@ -450,6 +453,7 @@  int cdnsp_ring_expansion(struct cdnsp_device *pdev,
 	}
 
 	cdnsp_link_rings(pdev, ring, first, last, num_segs);
+	trace_cdnsp_ring_expansion(ring);
 
 	return 0;
 }
@@ -610,6 +614,8 @@  int cdnsp_alloc_stream_info(struct cdnsp_device *pdev,
 		stream_info->stream_ctx_array[cur_stream].stream_ring =
 			cpu_to_le64(addr);
 
+		trace_cdnsp_set_stream_ring(cur_ring);
+
 		ret = cdnsp_update_stream_mapping(cur_ring);
 		if (ret)
 			goto cleanup_rings;
@@ -695,6 +701,7 @@  static int cdnsp_alloc_priv_device(struct cdnsp_device *pdev, gfp_t flags)
 	pdev->dcbaa->dev_context_ptrs[1] = cpu_to_le64(pdev->out_ctx.dma);
 	pdev->cmd.in_ctx = &pdev->in_ctx;
 
+	trace_cdnsp_alloc_priv_device(pdev);
 	return 0;
 fail:
 	dma_pool_free(pdev->device_pool, pdev->out_ctx.bytes,
@@ -761,6 +768,8 @@  int cdnsp_setup_addressable_priv_dev(struct cdnsp_device *pdev)
 	ep0_ctx->deq = cpu_to_le64(pdev->eps[0].ring->first_seg->dma |
 				   pdev->eps[0].ring->cycle_state);
 
+	trace_cdnsp_setup_addressable_priv_device(pdev);
+
 	return 0;
 }
 
@@ -1112,7 +1121,7 @@  static void cdnsp_add_in_port(struct cdnsp_device *pdev,
 			      struct cdnsp_port *port,
 			      __le32 __iomem *addr)
 {
-	u32 temp, port_offset;
+	u32 temp, port_offset, port_count;
 
 	temp = readl(addr);
 	port->maj_rev = CDNSP_EXT_PORT_MAJOR(temp);
@@ -1121,6 +1130,9 @@  static void cdnsp_add_in_port(struct cdnsp_device *pdev,
 	/* Port offset and count in the third dword.*/
 	temp = readl(addr + 2);
 	port_offset = CDNSP_EXT_PORT_OFF(temp);
+	port_count = CDNSP_EXT_PORT_COUNT(temp);
+
+	trace_cdnsp_port_info(addr, port_offset, port_count, port->maj_rev);
 
 	port->port_num = port_offset;
 	port->exist = 1;
@@ -1171,6 +1183,8 @@  static int cdnsp_setup_port_arrays(struct cdnsp_device *pdev, gfp_t flags)
 		return -ENODEV;
 	}
 
+	trace_cdnsp_init("Found USB 2.0 ports and  USB 3.0 ports.");
+
 	pdev->usb2_port.regs = (struct cdnsp_port_regs *)
 			       (&pdev->op_regs->port_reg_base + NUM_PORT_REGS *
 				(pdev->usb2_port.port_num - 1));
diff --git a/drivers/usb/cdns3/cdnsp-ring.c b/drivers/usb/cdns3/cdnsp-ring.c
index a28faca41a8f..874d9ff5406c 100644
--- a/drivers/usb/cdns3/cdnsp-ring.c
+++ b/drivers/usb/cdns3/cdnsp-ring.c
@@ -61,6 +61,7 @@ 
 #include <linux/slab.h>
 #include <linux/irq.h>
 
+#include "cdnsp-trace.h"
 #include "cdnsp-gadget.h"
 
 /*
@@ -148,7 +149,7 @@  void cdnsp_inc_deq(struct cdnsp_device *pdev, struct cdnsp_ring *ring)
 	if (ring->type == TYPE_EVENT) {
 		if (!cdnsp_last_trb_on_seg(ring->deq_seg, ring->dequeue)) {
 			ring->dequeue++;
-			return;
+			goto out;
 		}
 
 		if (cdnsp_last_trb_on_ring(ring, ring->deq_seg, ring->dequeue))
@@ -156,7 +157,7 @@  void cdnsp_inc_deq(struct cdnsp_device *pdev, struct cdnsp_ring *ring)
 
 		ring->deq_seg = ring->deq_seg->next;
 		ring->dequeue = ring->deq_seg->trbs;
-		return;
+		goto out;
 	}
 
 	/* All other rings have link trbs. */
@@ -168,6 +169,8 @@  void cdnsp_inc_deq(struct cdnsp_device *pdev, struct cdnsp_ring *ring)
 		ring->deq_seg = ring->deq_seg->next;
 		ring->dequeue = ring->deq_seg->trbs;
 	}
+out:
+	trace_cdnsp_inc_deq(ring);
 }
 
 /*
@@ -222,6 +225,8 @@  static void cdnsp_inc_enq(struct cdnsp_device *pdev,
 		ring->enqueue = ring->enq_seg->trbs;
 		next = ring->enqueue;
 	}
+
+	trace_cdnsp_inc_enq(ring);
 }
 
 /*
@@ -261,6 +266,7 @@  static void cdnsp_force_l0_go(struct cdnsp_device *pdev)
 /* Ring the doorbell after placing a command on the ring. */
 void cdnsp_ring_cmd_db(struct cdnsp_device *pdev)
 {
+	trace_cdnsp_cmd_drbl("Ding Dong");
 	writel(DB_VALUE_CMD, &pdev->dba->cmd_db);
 }
 
@@ -299,6 +305,8 @@  static bool cdnsp_ring_ep_doorbell(struct cdnsp_device *pdev,
 	else
 		db_value = DB_VALUE(pep->idx, stream_id);
 
+	trace_cdnsp_tr_drbl(pep, stream_id);
+
 	writel(db_value, reg_addr);
 
 	cdnsp_force_l0_go(pdev);
@@ -484,6 +492,8 @@  static void cdnsp_find_new_dequeue_state(struct cdnsp_device *pdev,
 
 	state->new_deq_seg = new_seg;
 	state->new_deq_ptr = new_deq;
+
+	trace_cdnsp_new_deq_state(state);
 }
 
 /*
@@ -544,6 +554,10 @@  static struct cdnsp_segment *cdnsp_trb_in_td(struct cdnsp_device *pdev,
 		/* If the end TRB isn't in this segment, this is set to 0 */
 		end_trb_dma = cdnsp_trb_virt_to_dma(cur_seg, end_trb);
 
+		trace_cdnsp_looking_trb_in_td(suspect_dma, start_dma,
+					      end_trb_dma, cur_seg->dma,
+					      end_seg_dma);
+
 		if (end_trb_dma > 0) {
 			/*
 			 * The end TRB is in this segment, so suspect should
@@ -594,6 +608,9 @@  static void cdnsp_unmap_td_bounce_buffer(struct cdnsp_device *pdev,
 
 	preq = td->preq;
 
+	trace_cdnsp_bounce_unmap(td->preq, seg->bounce_len, seg->bounce_offs,
+				 seg->bounce_dma, 0);
+
 	if (!preq->direction) {
 		dma_unmap_single(pdev->dev, seg->bounce_dma,
 				 ring->bounce_buf_len,  DMA_TO_DEVICE);
@@ -631,6 +648,9 @@  static int cdnsp_cmd_set_deq(struct cdnsp_device *pdev,
 	cdnsp_ring_cmd_db(pdev);
 	ret = cdnsp_wait_for_cmd_compl(pdev);
 
+	trace_cdnsp_handle_cmd_set_deq(cdnsp_get_slot_ctx(&pdev->out_ctx));
+	trace_cdnsp_handle_cmd_set_deq_ep(pep->out_ctx);
+
 	/*
 	 * Update the ring's dequeue segment and dequeue pointer
 	 * to reflect the new position.
@@ -682,6 +702,9 @@  int cdnsp_remove_request(struct cdnsp_device *pdev,
 
 	memset(&deq_state, 0, sizeof(deq_state));
 
+	trace_cdnsp_remove_request(pep->out_ctx);
+	trace_cdnsp_remove_request_td(preq);
+
 	cur_td = &preq->td;
 	ep_ring = cdnsp_request_to_transfer_ring(pdev, preq);
 
@@ -789,6 +812,8 @@  static void cdnsp_handle_port_status(struct cdnsp_device *pdev,
 	writel(cdnsp_port_state_to_neutral(portsc) |
 	       (portsc & PORT_CHANGE_BITS), &port_regs->portsc);
 
+	trace_cdnsp_handle_port_status(pdev->active_port->port_num, portsc);
+
 	pdev->gadget.speed = cdnsp_port_speed(portsc);
 	link_state = portsc & PORT_PLS_MASK;
 
@@ -954,8 +979,10 @@  static int cdnsp_giveback_first_trb(struct cdnsp_device *pdev,
 		start_trb->field[3] &= cpu_to_le32(~TRB_CYCLE);
 
 	if ((pep->ep_state & EP_HAS_STREAMS) &&
-	    !pep->stream_info.first_prime_det)
+	    !pep->stream_info.first_prime_det) {
+		trace_cdnsp_wait_for_prime(pep, stream_id);
 		return 0;
+	}
 
 	return cdnsp_ring_ep_doorbell(pdev, pep, stream_id);
 }
@@ -1226,8 +1253,10 @@  static int cdnsp_handle_tx_event(struct cdnsp_device *pdev,
 	if (invalidate || !pdev->gadget.connected)
 		goto cleanup;
 
-	if (GET_EP_CTX_STATE(pep->out_ctx) == EP_STATE_DISABLED)
+	if (GET_EP_CTX_STATE(pep->out_ctx) == EP_STATE_DISABLED) {
+		trace_cdnsp_ep_disabled(pep->out_ctx);
 		goto err_out;
+	}
 
 	/* Some transfer events don't always point to a trb*/
 	if (!ep_ring) {
@@ -1274,8 +1303,23 @@  static int cdnsp_handle_tx_event(struct cdnsp_device *pdev,
 		 * list.
 		 */
 		if (list_empty(&ep_ring->td_list)) {
-			if (pep->skip)
+			/*
+			 * Don't print warnings if it's due to a stopped
+			 * endpoint generating an extra completion event, or
+			 * a event for the last TRB of a short TD we already
+			 * got a short event for.
+			 * The short TD is already removed from the TD list.
+			 */
+			if (!(trb_comp_code == COMP_STOPPED ||
+			      trb_comp_code == COMP_STOPPED_LENGTH_INVALID ||
+			      ep_ring->last_td_was_short))
+				trace_cdnsp_trb_without_td(ep_ring,
+					(struct cdnsp_generic_trb *)event);
+
+			if (pep->skip) {
 				pep->skip = false;
+				trace_cdnsp_ep_list_empty_with_skip(pep, 0);
+			}
 
 			goto cleanup;
 		}
@@ -1332,6 +1376,9 @@  static int cdnsp_handle_tx_event(struct cdnsp_device *pdev,
 		ep_trb = &ep_seg->trbs[(ep_trb_dma - ep_seg->dma)
 				       / sizeof(*ep_trb)];
 
+		trace_cdnsp_handle_transfer(ep_ring,
+					    (struct cdnsp_generic_trb *)ep_trb);
+
 		if (cdnsp_trb_is_noop(ep_trb))
 			goto cleanup;
 
@@ -1397,6 +1444,8 @@  static bool cdnsp_handle_event(struct cdnsp_device *pdev)
 	if (cycle_bit != pdev->event_ring->cycle_state)
 		return false;
 
+	trace_cdnsp_handle_event(pdev->event_ring, &event->generic);
+
 	/*
 	 * Barrier between reading the TRB_CYCLE (valid) flag above and any
 	 * reads of the event's flags/data below.
@@ -1544,6 +1593,7 @@  static void cdnsp_queue_trb(struct cdnsp_device *pdev, struct cdnsp_ring *ring,
 	trb->field[2] = cpu_to_le32(field3);
 	trb->field[3] = cpu_to_le32(field4);
 
+	trace_cdnsp_queue_trb(ring, trb);
 	cdnsp_inc_enq(pdev, ring, more_trbs_coming);
 }
 
@@ -1574,6 +1624,8 @@  static int cdnsp_prepare_ring(struct cdnsp_device *pdev,
 		if (cdnsp_room_on_ring(pdev, ep_ring, num_trbs))
 			break;
 
+		trace_cdnsp_no_room_on_ring("try ring expansion");
+
 		num_trbs_needed = num_trbs - ep_ring->num_trbs_free;
 		if (cdnsp_ring_expansion(pdev, ep_ring, num_trbs_needed,
 					 mem_flags)) {
@@ -1737,6 +1789,8 @@  static int cdnsp_align_td(struct cdnsp_device *pdev,
 	/* Is the last nornal TRB alignable by splitting it. */
 	if (*trb_buff_len > unalign) {
 		*trb_buff_len -= unalign;
+		trace_cdnsp_bounce_align_td_split(preq, *trb_buff_len,
+						  enqd_len, 0, unalign);
 		return 0;
 	}
 
@@ -1773,6 +1827,9 @@  static int cdnsp_align_td(struct cdnsp_device *pdev,
 	seg->bounce_len = new_buff_len;
 	seg->bounce_offs = enqd_len;
 
+	trace_cdnsp_bounce_map(preq, new_buff_len, enqd_len, seg->bounce_dma,
+			       unalign);
+
 	/*
 	 * Bounce buffer successful aligned and seg->bounce_dma will be used
 	 * in transfer TRB as new transfer buffer address.
@@ -2009,13 +2066,17 @@  int cdnsp_cmd_stop_ep(struct cdnsp_device *pdev, struct cdnsp_ep *pep)
 	u32 ep_state = GET_EP_CTX_STATE(pep->out_ctx);
 	int ret = 0;
 
-	if (ep_state == EP_STATE_STOPPED || ep_state == EP_STATE_DISABLED)
+	if (ep_state == EP_STATE_STOPPED || ep_state == EP_STATE_DISABLED) {
+		trace_cdnsp_ep_stopped_or_disabled(pep->out_ctx);
 		goto ep_stopped;
+	}
 
 	cdnsp_queue_stop_endpoint(pdev, pep->idx);
 	cdnsp_ring_cmd_db(pdev);
 	ret = cdnsp_wait_for_cmd_compl(pdev);
 
+	trace_cdnsp_handle_cmd_stop_ep(pep->out_ctx);
+
 ep_stopped:
 	pep->ep_state |= EP_STOPPED;
 	return ret;
@@ -2029,6 +2090,8 @@  int cdnsp_cmd_flush_ep(struct cdnsp_device *pdev, struct cdnsp_ep *pep)
 	cdnsp_ring_cmd_db(pdev);
 	ret = cdnsp_wait_for_cmd_compl(pdev);
 
+	trace_cdnsp_handle_cmd_flush_ep(pep->out_ctx);
+
 	return ret;
 }
 
diff --git a/drivers/usb/cdns3/cdnsp-trace.c b/drivers/usb/cdns3/cdnsp-trace.c
new file mode 100644
index 000000000000..e50ab799ad95
--- /dev/null
+++ b/drivers/usb/cdns3/cdnsp-trace.c
@@ -0,0 +1,12 @@ 
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Cadence CDNSP DRD Driver.
+ *
+ * Copyright (C) 2020 Cadence.
+ *
+ * Author: Pawel Laszczak <[e-mail]>
+ *
+ */
+
+#define CREATE_TRACE_POINTS
+#include "cdnsp-trace.h"
diff --git a/drivers/usb/cdns3/cdnsp-trace.h b/drivers/usb/cdns3/cdnsp-trace.h
new file mode 100644
index 000000000000..b68e282464d2
--- /dev/null
+++ b/drivers/usb/cdns3/cdnsp-trace.h
@@ -0,0 +1,840 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Cadence CDNSP DRD Driver.
+ * Trace support header file
+ *
+ * Copyright (C) 2020 Cadence.
+ *
+ * Author: Pawel Laszczak <[e-mail]>
+ *
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM cdnsp-dev
+
+/*
+ * The TRACE_SYSTEM_VAR defaults to TRACE_SYSTEM, but must be a
+ * legitimate C variable. It is not exported to user space.
+ */
+#undef TRACE_SYSTEM_VAR
+#define TRACE_SYSTEM_VAR cdnsp_dev
+
+#if !defined(__CDNSP_DEV_TRACE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define __CDNSP_DEV_TRACE_H
+
+#include <linux/tracepoint.h>
+#include "cdnsp-gadget.h"
+#include "cdnsp-debug.h"
+
+/*
+ * There is limitation for single buffer size in TRACEPOINT subsystem.
+ * By default TRACE_BUF_SIZE is 1024, so no all data will be logged.
+ * To show more data this must be increased. In most cases the default
+ * value is sufficient.
+ */
+#define CDNSP_MSG_MAX 500
+
+DECLARE_EVENT_CLASS(cdnsp_log_ep,
+	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
+	TP_ARGS(pep, stream_id),
+	TP_STRUCT__entry(
+		__string(name, pep->name)
+		__field(unsigned int, state)
+		__field(u32, stream_id)
+		__field(u8, enabled)
+		__field(unsigned int, num_streams)
+		__field(int, td_count)
+		__field(u8, first_prime_det)
+		__field(u8, drbls_count)
+	),
+	TP_fast_assign(
+		__assign_str(name, pep->name);
+		__entry->state = pep->ep_state;
+		__entry->stream_id = stream_id;
+		__entry->enabled = pep->ep_state & EP_HAS_STREAMS;
+		__entry->num_streams = pep->stream_info.num_streams;
+		__entry->td_count = pep->stream_info.td_count;
+		__entry->first_prime_det = pep->stream_info.first_prime_det;
+		__entry->drbls_count = pep->stream_info.drbls_count;
+	),
+	TP_printk("%s: SID: %08x ep state: %x stream: enabled: %d num  %d "
+		  "tds %d, first prime: %d drbls %d",
+		  __get_str(name), __entry->state, __entry->stream_id,
+		  __entry->enabled, __entry->num_streams, __entry->td_count,
+		  __entry->first_prime_det, __entry->drbls_count)
+);
+
+DEFINE_EVENT(cdnsp_log_ep, cdnsp_tr_drbl,
+	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
+	TP_ARGS(pep, stream_id)
+);
+
+DEFINE_EVENT(cdnsp_log_ep, cdnsp_wait_for_prime,
+	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
+	TP_ARGS(pep, stream_id)
+);
+
+DEFINE_EVENT(cdnsp_log_ep, cdnsp_ep_list_empty_with_skip,
+	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
+	TP_ARGS(pep, stream_id)
+);
+
+DEFINE_EVENT(cdnsp_log_ep, cdnsp_ep_enable_end,
+	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
+	TP_ARGS(pep, stream_id)
+);
+
+DEFINE_EVENT(cdnsp_log_ep, cdnsp_ep_disable_end,
+	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
+	TP_ARGS(pep, stream_id)
+);
+
+DEFINE_EVENT(cdnsp_log_ep, cdnsp_ep_busy_try_halt_again,
+	TP_PROTO(struct cdnsp_ep *pep, u32 stream_id),
+	TP_ARGS(pep, stream_id)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_enable_disable,
+	TP_PROTO(int set),
+	TP_ARGS(set),
+	TP_STRUCT__entry(
+		__field(int, set)
+	),
+	TP_fast_assign(
+		__entry->set = set;
+	),
+	TP_printk("%s", __entry->set ? "enabled" : "disabled")
+);
+
+DEFINE_EVENT(cdnsp_log_enable_disable, cdnsp_pullup,
+	TP_PROTO(int set),
+	TP_ARGS(set)
+);
+
+DEFINE_EVENT(cdnsp_log_enable_disable, cdnsp_u1,
+	TP_PROTO(int set),
+	TP_ARGS(set)
+);
+
+DEFINE_EVENT(cdnsp_log_enable_disable, cdnsp_u2,
+	TP_PROTO(int set),
+	TP_ARGS(set)
+);
+
+DEFINE_EVENT(cdnsp_log_enable_disable, cdnsp_lpm,
+	TP_PROTO(int set),
+	TP_ARGS(set)
+);
+
+DEFINE_EVENT(cdnsp_log_enable_disable, cdnsp_may_wakeup,
+	TP_PROTO(int set),
+	TP_ARGS(set)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_simple,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg),
+	TP_STRUCT__entry(
+		__string(text, msg)
+	),
+	TP_fast_assign(
+		__assign_str(text, msg)
+	),
+	TP_printk("%s", __get_str(text))
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_exit,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_init,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_slot_id,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_cmd_drbl,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_no_room_on_ring,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep0_status_stage,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep0_data_stage,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep0_request,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep0_set_config,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep0_halted,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+DEFINE_EVENT(cdnsp_log_simple, cdnsp_ep_halt,
+	TP_PROTO(char *msg),
+	TP_ARGS(msg)
+);
+
+TRACE_EVENT(cdnsp_looking_trb_in_td,
+	TP_PROTO(dma_addr_t suspect, dma_addr_t trb_start, dma_addr_t trb_end,
+		 dma_addr_t curr_seg, dma_addr_t end_seg),
+	TP_ARGS(suspect, trb_start, trb_end, curr_seg, end_seg),
+	TP_STRUCT__entry(
+		__field(dma_addr_t, suspect)
+		__field(dma_addr_t, trb_start)
+		__field(dma_addr_t, trb_end)
+		__field(dma_addr_t, curr_seg)
+		__field(dma_addr_t, end_seg)
+	),
+	TP_fast_assign(
+		__entry->suspect = suspect;
+		__entry->trb_start = trb_start;
+		__entry->trb_end = trb_end;
+		__entry->curr_seg = curr_seg;
+		__entry->end_seg = end_seg;
+	),
+	TP_printk("DMA: suspect event: %pad, trb-start: %pad, trb-end %pad, "
+		  "seg-start %pad, seg-end %pad",
+		  &__entry->suspect, &__entry->trb_start, &__entry->trb_end,
+		  &__entry->curr_seg, &__entry->end_seg)
+);
+
+TRACE_EVENT(cdnsp_port_info,
+	TP_PROTO(__le32 __iomem *addr, u32 offset, u32 count, u32 rev),
+	TP_ARGS(addr, offset, count, rev),
+	TP_STRUCT__entry(
+		__field(__le32 __iomem *, addr)
+		__field(u32, offset)
+		__field(u32, count)
+		__field(u32, rev)
+	),
+	TP_fast_assign(
+		__entry->addr = addr;
+		__entry->offset = offset;
+		__entry->count = count;
+		__entry->rev = rev;
+	),
+	TP_printk("Ext Cap %p, port offset = %u, count = %u, rev = 0x%x",
+		  __entry->addr, __entry->offset, __entry->count, __entry->rev)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_deq_state,
+	TP_PROTO(struct cdnsp_dequeue_state *state),
+	TP_ARGS(state),
+	TP_STRUCT__entry(
+		__field(int, new_cycle_state)
+		__field(struct cdnsp_segment *, new_deq_seg)
+		__field(dma_addr_t, deq_seg_dma)
+		__field(union cdnsp_trb	*, new_deq_ptr)
+		__field(dma_addr_t, deq_ptr_dma)
+	),
+	TP_fast_assign(
+		__entry->new_cycle_state = state->new_cycle_state;
+		__entry->new_deq_seg = state->new_deq_seg;
+		__entry->deq_seg_dma = state->new_deq_seg->dma;
+		__entry->new_deq_ptr = state->new_deq_ptr,
+		__entry->deq_ptr_dma = cdnsp_trb_virt_to_dma(state->new_deq_seg,
+							     state->new_deq_ptr);
+	),
+	TP_printk("New cycle state = 0x%x, New dequeue segment = %p (0x%pad dma), "
+		  "New dequeue pointer = %p (0x%pad dma)",
+		  __entry->new_cycle_state, __entry->new_deq_seg,
+		  &__entry->deq_seg_dma, __entry->new_deq_ptr,
+		  &__entry->deq_ptr_dma
+	)
+);
+
+DEFINE_EVENT(cdnsp_log_deq_state, cdnsp_new_deq_state,
+	TP_PROTO(struct cdnsp_dequeue_state *state),
+	TP_ARGS(state)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_ctrl,
+	TP_PROTO(struct usb_ctrlrequest *ctrl),
+	TP_ARGS(ctrl),
+	TP_STRUCT__entry(
+		__field(u8, bRequestType)
+		__field(u8, bRequest)
+		__field(u16, wValue)
+		__field(u16, wIndex)
+		__field(u16, wLength)
+		__dynamic_array(char, str, CDNSP_MSG_MAX)
+	),
+	TP_fast_assign(
+		__entry->bRequestType = ctrl->bRequestType;
+		__entry->bRequest = ctrl->bRequest;
+		__entry->wValue = le16_to_cpu(ctrl->wValue);
+		__entry->wIndex = le16_to_cpu(ctrl->wIndex);
+		__entry->wLength = le16_to_cpu(ctrl->wLength);
+	),
+	TP_printk("%s", usb_decode_ctrl(__get_str(str), CDNSP_MSG_MAX,
+					__entry->bRequestType,
+					__entry->bRequest, __entry->wValue,
+					__entry->wIndex, __entry->wLength)
+	)
+);
+
+DEFINE_EVENT(cdnsp_log_ctrl, cdnsp_ctrl_req,
+	TP_PROTO(struct usb_ctrlrequest *ctrl),
+	TP_ARGS(ctrl)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_bounce,
+	TP_PROTO(struct cdnsp_request *preq, u32 new_buf_len, u32 offset,
+		 dma_addr_t dma, unsigned int unalign),
+	TP_ARGS(preq, new_buf_len, offset, dma, unalign),
+	TP_STRUCT__entry(
+		__string(name, preq->pep->name)
+		__field(u32, new_buf_len)
+		__field(u32, offset)
+		__field(dma_addr_t, dma)
+		__field(unsigned int, unalign)
+	),
+	TP_fast_assign(
+		__assign_str(name, preq->pep->name);
+		__entry->new_buf_len = new_buf_len;
+		__entry->offset = offset;
+		__entry->dma = dma;
+		__entry->unalign = unalign;
+	),
+	TP_printk("%s buf len %d, offset %d, dma %pad, unalign %d",
+		  __get_str(name), __entry->new_buf_len,
+		  __entry->offset, &__entry->dma, __entry->unalign
+	)
+);
+
+DEFINE_EVENT(cdnsp_log_bounce, cdnsp_bounce_align_td_split,
+	TP_PROTO(struct cdnsp_request *preq, u32 new_buf_len, u32 offset,
+		 dma_addr_t dma, unsigned int unalign),
+	TP_ARGS(preq, new_buf_len, offset, dma, unalign)
+);
+
+DEFINE_EVENT(cdnsp_log_bounce, cdnsp_bounce_map,
+	TP_PROTO(struct cdnsp_request *preq, u32 new_buf_len, u32 offset,
+		 dma_addr_t dma, unsigned int unalign),
+	TP_ARGS(preq, new_buf_len, offset, dma, unalign)
+);
+
+DEFINE_EVENT(cdnsp_log_bounce, cdnsp_bounce_unmap,
+	TP_PROTO(struct cdnsp_request *preq, u32 new_buf_len, u32 offset,
+		 dma_addr_t dma, unsigned int unalign),
+	TP_ARGS(preq, new_buf_len, offset, dma, unalign)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_trb,
+	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
+	TP_ARGS(ring, trb),
+	TP_STRUCT__entry(
+		__field(u32, type)
+		__field(u32, field0)
+		__field(u32, field1)
+		__field(u32, field2)
+		__field(u32, field3)
+		__field(union cdnsp_trb *, trb)
+		__field(dma_addr_t, trb_dma)
+		__dynamic_array(char, str, CDNSP_MSG_MAX)
+	),
+	TP_fast_assign(
+		__entry->type = ring->type;
+		__entry->field0 = le32_to_cpu(trb->field[0]);
+		__entry->field1 = le32_to_cpu(trb->field[1]);
+		__entry->field2 = le32_to_cpu(trb->field[2]);
+		__entry->field3 = le32_to_cpu(trb->field[3]);
+		__entry->trb = (union cdnsp_trb *)trb;
+		__entry->trb_dma = cdnsp_trb_virt_to_dma(ring->deq_seg,
+							 (union cdnsp_trb *)trb);
+
+	),
+	TP_printk("%s: %s trb: %p(%pad)", cdnsp_ring_type_string(__entry->type),
+		  cdnsp_decode_trb(__get_str(str), CDNSP_MSG_MAX,
+				   __entry->field0, __entry->field1,
+				   __entry->field2, __entry->field3),
+				   __entry->trb, &__entry->trb_dma
+	)
+);
+
+DEFINE_EVENT(cdnsp_log_trb, cdnsp_handle_event,
+	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
+	TP_ARGS(ring, trb)
+);
+
+DEFINE_EVENT(cdnsp_log_trb, cdnsp_trb_without_td,
+	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
+	TP_ARGS(ring, trb)
+);
+
+DEFINE_EVENT(cdnsp_log_trb, cdnsp_handle_command,
+	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
+	TP_ARGS(ring, trb)
+);
+
+DEFINE_EVENT(cdnsp_log_trb, cdnsp_handle_transfer,
+	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
+	TP_ARGS(ring, trb)
+);
+
+DEFINE_EVENT(cdnsp_log_trb, cdnsp_queue_trb,
+	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
+	TP_ARGS(ring, trb)
+);
+
+DEFINE_EVENT(cdnsp_log_trb, cdnsp_cmd_wait_for_compl,
+	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
+	TP_ARGS(ring, trb)
+);
+
+DEFINE_EVENT(cdnsp_log_trb, cdnsp_cmd_timeout,
+	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
+	TP_ARGS(ring, trb)
+);
+
+DEFINE_EVENT(cdnsp_log_trb, cdnsp_defered_event,
+	TP_PROTO(struct cdnsp_ring *ring, struct cdnsp_generic_trb *trb),
+	TP_ARGS(ring, trb)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_pdev,
+	TP_PROTO(struct cdnsp_device *pdev),
+	TP_ARGS(pdev),
+	TP_STRUCT__entry(
+		__field(struct cdnsp_device *, pdev)
+		__field(struct usb_gadget *, gadget)
+		__field(dma_addr_t, out_ctx)
+		__field(dma_addr_t, in_ctx)
+		__field(u8, port_num)
+	),
+	TP_fast_assign(
+		__entry->pdev = pdev;
+		__entry->gadget = &pdev->gadget;
+		__entry->in_ctx = pdev->in_ctx.dma;
+		__entry->out_ctx = pdev->out_ctx.dma;
+		__entry->port_num = pdev->active_port ?
+				pdev->active_port->port_num : 0xFF;
+	),
+	TP_printk("pdev %p gadget %p ctx %pad | %pad, port %d ",
+		  __entry->pdev, __entry->gadget, &__entry->in_ctx,
+		  &__entry->out_ctx, __entry->port_num
+	)
+);
+
+DEFINE_EVENT(cdnsp_log_pdev, cdnsp_alloc_priv_device,
+	TP_PROTO(struct cdnsp_device *vdev),
+	TP_ARGS(vdev)
+);
+
+DEFINE_EVENT(cdnsp_log_pdev, cdnsp_free_priv_device,
+	TP_PROTO(struct cdnsp_device *vdev),
+	TP_ARGS(vdev)
+);
+
+DEFINE_EVENT(cdnsp_log_pdev, cdnsp_setup_device,
+	TP_PROTO(struct cdnsp_device *vdev),
+	TP_ARGS(vdev)
+);
+
+DEFINE_EVENT(cdnsp_log_pdev, cdnsp_setup_addressable_priv_device,
+	TP_PROTO(struct cdnsp_device *vdev),
+	TP_ARGS(vdev)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_request,
+	TP_PROTO(struct cdnsp_request *req),
+	TP_ARGS(req),
+	TP_STRUCT__entry(
+		__string(name, req->pep->name)
+		__field(struct usb_request *, request)
+		__field(struct cdnsp_request *, preq)
+		__field(void *, buf)
+		__field(unsigned int, actual)
+		__field(unsigned int, length)
+		__field(int, status)
+		__field(dma_addr_t, dma)
+		__field(unsigned int, stream_id)
+		__field(unsigned int, zero)
+		__field(unsigned int, short_not_ok)
+		__field(unsigned int, no_interrupt)
+		__field(struct scatterlist*, sg)
+		__field(unsigned int, num_sgs)
+		__field(unsigned int, num_mapped_sgs)
+
+	),
+	TP_fast_assign(
+		__assign_str(name, req->pep->name);
+		__entry->request = &req->request;
+		__entry->preq = req;
+		__entry->buf = req->request.buf;
+		__entry->actual = req->request.actual;
+		__entry->length = req->request.length;
+		__entry->status = req->request.status;
+		__entry->dma = req->request.dma;
+		__entry->stream_id = req->request.stream_id;
+		__entry->zero = req->request.zero;
+		__entry->short_not_ok = req->request.short_not_ok;
+		__entry->no_interrupt = req->request.no_interrupt;
+		__entry->sg = req->request.sg;
+		__entry->num_sgs = req->request.num_sgs;
+		__entry->num_mapped_sgs = req->request.num_mapped_sgs;
+	),
+	TP_printk("%s; req U:%p/P:%p, req buf %p, length %u/%u, status %d, "
+		  "buf dma (%pad), SID %u, %s%s%s, sg %p, num_sg %d,"
+		  " num_m_sg %d",
+		  __get_str(name), __entry->request, __entry->preq,
+		  __entry->buf, __entry->actual, __entry->length,
+		  __entry->status, &__entry->dma,
+		  __entry->stream_id, __entry->zero ? "Z" : "z",
+		  __entry->short_not_ok ? "S" : "s",
+		  __entry->no_interrupt ? "I" : "i",
+		  __entry->sg, __entry->num_sgs, __entry->num_mapped_sgs
+		)
+);
+
+DEFINE_EVENT(cdnsp_log_request, cdnsp_request_enqueue,
+	TP_PROTO(struct cdnsp_request *req),
+	TP_ARGS(req)
+);
+
+DEFINE_EVENT(cdnsp_log_request, cdnsp_request_enqueue_busy,
+	TP_PROTO(struct cdnsp_request *req),
+	TP_ARGS(req)
+);
+
+DEFINE_EVENT(cdnsp_log_request, cdnsp_request_enqueue_error,
+	TP_PROTO(struct cdnsp_request *req),
+	TP_ARGS(req)
+);
+
+DEFINE_EVENT(cdnsp_log_request, cdnsp_request_dequeue,
+	TP_PROTO(struct cdnsp_request *req),
+	TP_ARGS(req)
+);
+
+DEFINE_EVENT(cdnsp_log_request, cdnsp_request_giveback,
+	TP_PROTO(struct cdnsp_request *req),
+	TP_ARGS(req)
+);
+
+DEFINE_EVENT(cdnsp_log_request, cdnsp_alloc_request,
+	TP_PROTO(struct cdnsp_request *req),
+	TP_ARGS(req)
+);
+
+DEFINE_EVENT(cdnsp_log_request, cdnsp_free_request,
+	TP_PROTO(struct cdnsp_request *req),
+	TP_ARGS(req)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_ep_ctx,
+	TP_PROTO(struct cdnsp_ep_ctx *ctx),
+	TP_ARGS(ctx),
+	TP_STRUCT__entry(
+		__field(u32, info)
+		__field(u32, info2)
+		__field(u64, deq)
+		__field(u32, tx_info)
+		__dynamic_array(char, str, CDNSP_MSG_MAX)
+	),
+	TP_fast_assign(
+		__entry->info = le32_to_cpu(ctx->ep_info);
+		__entry->info2 = le32_to_cpu(ctx->ep_info2);
+		__entry->deq = le64_to_cpu(ctx->deq);
+		__entry->tx_info = le32_to_cpu(ctx->tx_info);
+	),
+	TP_printk("%s", cdnsp_decode_ep_context(__get_str(str), CDNSP_MSG_MAX,
+						__entry->info, __entry->info2,
+						__entry->deq, __entry->tx_info)
+	)
+);
+
+DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_ep_disabled,
+	TP_PROTO(struct cdnsp_ep_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_ep_stopped_or_disabled,
+	TP_PROTO(struct cdnsp_ep_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_remove_request,
+	TP_PROTO(struct cdnsp_ep_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_handle_cmd_stop_ep,
+	TP_PROTO(struct cdnsp_ep_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_handle_cmd_flush_ep,
+	TP_PROTO(struct cdnsp_ep_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_handle_cmd_set_deq_ep,
+	TP_PROTO(struct cdnsp_ep_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_handle_cmd_reset_ep,
+	TP_PROTO(struct cdnsp_ep_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_ep_ctx, cdnsp_handle_cmd_config_ep,
+	TP_PROTO(struct cdnsp_ep_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_slot_ctx,
+	TP_PROTO(struct cdnsp_slot_ctx *ctx),
+	TP_ARGS(ctx),
+	TP_STRUCT__entry(
+		__field(u32, info)
+		__field(u32, info2)
+		__field(u32, int_target)
+		__field(u32, state)
+	),
+	TP_fast_assign(
+		__entry->info = le32_to_cpu(ctx->dev_info);
+		__entry->info2 = le32_to_cpu(ctx->dev_port);
+		__entry->int_target = le64_to_cpu(ctx->int_target);
+		__entry->state = le32_to_cpu(ctx->dev_state);
+	),
+	TP_printk("%s", cdnsp_decode_slot_context(__entry->info,
+						  __entry->info2,
+						  __entry->int_target,
+						  __entry->state)
+	)
+);
+
+DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_slot_already_in_default,
+	TP_PROTO(struct cdnsp_slot_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_handle_cmd_enable_slot,
+	TP_PROTO(struct cdnsp_slot_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_handle_cmd_disable_slot,
+	TP_PROTO(struct cdnsp_slot_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_reset_device,
+	TP_PROTO(struct cdnsp_slot_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_setup_device_slot,
+	TP_PROTO(struct cdnsp_slot_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_handle_cmd_addr_dev,
+	TP_PROTO(struct cdnsp_slot_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_handle_cmd_reset_dev,
+	TP_PROTO(struct cdnsp_slot_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_handle_cmd_set_deq,
+	TP_PROTO(struct cdnsp_slot_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DEFINE_EVENT(cdnsp_log_slot_ctx, cdnsp_configure_endpoint,
+	TP_PROTO(struct cdnsp_slot_ctx *ctx),
+	TP_ARGS(ctx)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_td_info,
+	TP_PROTO(struct cdnsp_request *preq),
+	TP_ARGS(preq),
+	TP_STRUCT__entry(
+		__string(name, preq->pep->name)
+		__field(struct usb_request *, request)
+		__field(struct cdnsp_request *, preq)
+		__field(union cdnsp_trb *, first_trb)
+		__field(union cdnsp_trb *, last_trb)
+		__field(dma_addr_t, trb_dma)
+	),
+	TP_fast_assign(
+		__assign_str(name, preq->pep->name);
+		__entry->request = &preq->request;
+		__entry->preq = preq;
+		__entry->first_trb = preq->td.first_trb;
+		__entry->last_trb = preq->td.last_trb;
+		__entry->trb_dma = cdnsp_trb_virt_to_dma(preq->td.start_seg,
+							 preq->td.first_trb)
+	),
+	TP_printk("%s req/preq:  %p/%p, first trb %p[vir]/%pad(dma), last trb %p",
+		  __get_str(name), __entry->request, __entry->preq,
+		  __entry->first_trb, &__entry->trb_dma,
+		  __entry->last_trb
+		)
+);
+
+DEFINE_EVENT(cdnsp_log_td_info, cdnsp_remove_request_td,
+	TP_PROTO(struct cdnsp_request *preq),
+	TP_ARGS(preq)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_ring,
+	TP_PROTO(struct cdnsp_ring *ring),
+	TP_ARGS(ring),
+	TP_STRUCT__entry(
+		__field(u32, type)
+		__field(void *, ring)
+		__field(dma_addr_t, enq)
+		__field(dma_addr_t, deq)
+		__field(dma_addr_t, enq_seg)
+		__field(dma_addr_t, deq_seg)
+		__field(unsigned int, num_segs)
+		__field(unsigned int, stream_id)
+		__field(unsigned int, cycle_state)
+		__field(unsigned int, num_trbs_free)
+		__field(unsigned int, bounce_buf_len)
+	),
+	TP_fast_assign(
+		__entry->ring = ring;
+		__entry->type = ring->type;
+		__entry->num_segs = ring->num_segs;
+		__entry->stream_id = ring->stream_id;
+		__entry->enq_seg = ring->enq_seg->dma;
+		__entry->deq_seg = ring->deq_seg->dma;
+		__entry->cycle_state = ring->cycle_state;
+		__entry->num_trbs_free = ring->num_trbs_free;
+		__entry->bounce_buf_len = ring->bounce_buf_len;
+		__entry->enq = cdnsp_trb_virt_to_dma(ring->enq_seg,
+						     ring->enqueue);
+		__entry->deq = cdnsp_trb_virt_to_dma(ring->deq_seg,
+						     ring->dequeue);
+	),
+	TP_printk("%s %p: enq %pad(%pad) deq %pad(%pad) segs %d stream %d"
+		  " free_trbs %d bounce %d cycle %d",
+		  cdnsp_ring_type_string(__entry->type), __entry->ring,
+		  &__entry->enq, &__entry->enq_seg,
+		  &__entry->deq, &__entry->deq_seg,
+		  __entry->num_segs,
+		  __entry->stream_id,
+		  __entry->num_trbs_free,
+		  __entry->bounce_buf_len,
+		  __entry->cycle_state
+		)
+);
+
+DEFINE_EVENT(cdnsp_log_ring, cdnsp_ring_alloc,
+	TP_PROTO(struct cdnsp_ring *ring),
+	TP_ARGS(ring)
+);
+
+DEFINE_EVENT(cdnsp_log_ring, cdnsp_ring_free,
+	TP_PROTO(struct cdnsp_ring *ring),
+	TP_ARGS(ring)
+);
+
+DEFINE_EVENT(cdnsp_log_ring, cdnsp_set_stream_ring,
+	TP_PROTO(struct cdnsp_ring *ring),
+	TP_ARGS(ring)
+);
+
+DEFINE_EVENT(cdnsp_log_ring, cdnsp_ring_expansion,
+	TP_PROTO(struct cdnsp_ring *ring),
+	TP_ARGS(ring)
+);
+
+DEFINE_EVENT(cdnsp_log_ring, cdnsp_inc_enq,
+	TP_PROTO(struct cdnsp_ring *ring),
+	TP_ARGS(ring)
+);
+
+DEFINE_EVENT(cdnsp_log_ring, cdnsp_inc_deq,
+	TP_PROTO(struct cdnsp_ring *ring),
+	TP_ARGS(ring)
+);
+
+DECLARE_EVENT_CLASS(cdnsp_log_portsc,
+		TP_PROTO(u32 portnum, u32 portsc),
+		TP_ARGS(portnum, portsc),
+		TP_STRUCT__entry(
+				__field(u32, portnum)
+				__field(u32, portsc)
+				__dynamic_array(char, str, CDNSP_MSG_MAX)
+				),
+		TP_fast_assign(
+				__entry->portnum = portnum;
+				__entry->portsc = portsc;
+				),
+		TP_printk("port-%d: %s",
+			  __entry->portnum,
+			  cdnsp_decode_portsc(__get_str(str), CDNSP_MSG_MAX,
+					      __entry->portsc)
+			)
+);
+
+DEFINE_EVENT(cdnsp_log_portsc, cdnsp_handle_port_status,
+		TP_PROTO(u32 portnum, u32 portsc),
+		TP_ARGS(portnum, portsc)
+);
+
+DEFINE_EVENT(cdnsp_log_portsc, cdnsp_link_state_changed,
+		TP_PROTO(u32 portnum, u32 portsc),
+		TP_ARGS(portnum, portsc)
+);
+
+TRACE_EVENT(cdnsp_stream_number,
+	TP_PROTO(struct cdnsp_ep *pep, int num_stream_ctxs, int num_streams),
+	TP_ARGS(pep, num_stream_ctxs, num_streams),
+	TP_STRUCT__entry(
+		__string(name, pep->name)
+		__field(int, num_stream_ctxs)
+		__field(int, num_streams)
+	),
+	TP_fast_assign(
+		__entry->num_stream_ctxs = num_stream_ctxs;
+		__entry->num_streams = num_streams;
+	),
+	TP_printk("%s Need %u stream ctx entries for %u stream IDs.",
+		  __get_str(name), __entry->num_stream_ctxs,
+		  __entry->num_streams)
+);
+
+#endif /* __CDNSP_TRACE_H */
+
+/* this part must be outside header guard */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE cdnsp-trace
+
+#include <trace/define_trace.h>