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[34.91.20.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5c3ebd424f0sm4075401a12.7.2024.09.10.03.15.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Sep 2024 03:15:40 -0700 (PDT) From: =?utf-8?q?=C5=81ukasz_Bartosik?= To: Heikki Krogerus , Greg Kroah-Hartman , Lee Jones , Benson Leung , Guenter Roeck Cc: Abhishek Pandit-Subedi , Pavan Holla , Tzung-Bi Shih , linux-usb@vger.kernel.org, chrome-platform@lists.linux.dev Subject: [PATCH v6 5/8] usb: typec: cros_ec_ucsi: Add trace events Date: Tue, 10 Sep 2024 10:15:24 +0000 Message-ID: <20240910101527.603452-6-ukaszb@chromium.org> X-Mailer: git-send-email 2.46.0.598.g6f2099f65c-goog In-Reply-To: <20240910101527.603452-1-ukaszb@chromium.org> References: <20240910101527.603452-1-ukaszb@chromium.org> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add trace events to ChromeOS UCSI driver to enable debugging. Signed-off-by: Łukasz Bartosik --- MAINTAINERS | 1 + drivers/usb/typec/ucsi/cros_ec_ucsi.c | 8 ++ drivers/usb/typec/ucsi/cros_ec_ucsi_trace.h | 92 +++++++++++++++++++++ 3 files changed, 101 insertions(+) create mode 100644 drivers/usb/typec/ucsi/cros_ec_ucsi_trace.h diff --git a/MAINTAINERS b/MAINTAINERS index 8c030ea0b503..d084f32208f0 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5306,6 +5306,7 @@ M: Łukasz Bartosik L: chrome-platform@lists.linux.dev S: Maintained F: drivers/usb/typec/ucsi/cros_ec_ucsi.c +F: drivers/usb/typec/ucsi/cros_ec_ucsi_trace.h CHRONTEL CH7322 CEC DRIVER M: Joe Tessler diff --git a/drivers/usb/typec/ucsi/cros_ec_ucsi.c b/drivers/usb/typec/ucsi/cros_ec_ucsi.c index 422b3b14028c..70185616ec86 100644 --- a/drivers/usb/typec/ucsi/cros_ec_ucsi.c +++ b/drivers/usb/typec/ucsi/cros_ec_ucsi.c @@ -16,7 +16,9 @@ #include #include +#define CREATE_TRACE_POINTS #include "ucsi.h" +#include "cros_ec_ucsi_trace.h" /* * Maximum size in bytes of a UCSI message between AP and EC @@ -62,6 +64,8 @@ static int cros_ucsi_read(struct ucsi *ucsi, unsigned int offset, void *val, dev_warn(udata->dev, "Failed to send EC message UCSI_PPM_GET: error=%d", ret); return ret; } + + trace_cros_ec_opm_to_ppm_rd(offset, val, val_len); return 0; } @@ -96,6 +100,8 @@ static int cros_ucsi_async_control(struct ucsi *ucsi, u64 cmd) dev_warn(udata->dev, "Failed to send EC message UCSI_PPM_SET: error=%d", ret); return ret; } + + trace_cros_ec_opm_to_ppm_wr(req->offset, &cmd, sizeof(cmd)); return 0; } @@ -138,6 +144,8 @@ static void cros_ucsi_work(struct work_struct *work) struct cros_ucsi_data *udata = container_of(work, struct cros_ucsi_data, work); u32 cci; + trace_cros_ec_ppm_to_opm(0); + if (cros_ucsi_read_cci(udata->ucsi, &cci)) return; diff --git a/drivers/usb/typec/ucsi/cros_ec_ucsi_trace.h b/drivers/usb/typec/ucsi/cros_ec_ucsi_trace.h new file mode 100644 index 000000000000..b765ef5c8236 --- /dev/null +++ b/drivers/usb/typec/ucsi/cros_ec_ucsi_trace.h @@ -0,0 +1,92 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM cros_ec_ucsi + +#if !defined(__CROS_EC_UCSI_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) +#define __CROS_EC_UCSI_TRACE_H + +#include + +#define decode_cmd(cmd) \ + __print_symbolic(cmd, \ + { 0, "Unknown command" }, \ + { UCSI_PPM_RESET, "PPM_RESET" }, \ + { UCSI_CONNECTOR_RESET, "CONNECTOR_RESET," }, \ + { UCSI_ACK_CC_CI, "ACK_CC_CI" }, \ + { UCSI_SET_NOTIFICATION_ENABLE, "SET_NOTIFICATION_ENABLE" }, \ + { UCSI_GET_CAPABILITY, "GET_CAPABILITY" }, \ + { UCSI_GET_CONNECTOR_CAPABILITY, "GET_CONNECTOR_CAPABILITY" }, \ + { UCSI_SET_UOM, "SET_UOM" }, \ + { UCSI_SET_UOR, "SET_UOR" }, \ + { UCSI_SET_PDM, "SET_PDM" }, \ + { UCSI_SET_PDR, "SET_PDR" }, \ + { UCSI_GET_ALTERNATE_MODES, "GET_ALTERNATE_MODES" }, \ + { UCSI_GET_CAM_SUPPORTED, "GET_CAM_SUPPORTED" }, \ + { UCSI_GET_CURRENT_CAM, "GET_CURRENT_CAM" }, \ + { UCSI_SET_NEW_CAM, "SET_NEW_CAM" }, \ + { UCSI_GET_PDOS, "GET_PDOS" }, \ + { UCSI_GET_CABLE_PROPERTY, "GET_CABLE_PROPERTY" }, \ + { UCSI_GET_CONNECTOR_STATUS, "GET_CONNECTOR_STATUS" }, \ + { UCSI_GET_ERROR_STATUS, "GET_ERROR_STATUS" }) + +#define decode_offset(offset) \ + __print_symbolic(offset, \ + { UCSI_VERSION, "VER" }, \ + { UCSI_CCI, "CCI" }, \ + { UCSI_CONTROL, "CTRL" }, \ + { UCSI_MESSAGE_IN, "MSG_IN" }, \ + { UCSI_MESSAGE_OUT, "MSG_OUT" }, \ + { UCSIv2_MESSAGE_OUT, "MSG_OUTv2" }) + +DECLARE_EVENT_CLASS(cros_ec_opm_to_ppm, + TP_PROTO(u16 offset, const void *value, size_t length), + TP_ARGS(offset, value, length), + TP_STRUCT__entry( + __field(u8, cmd) + __field(u16, offset) + __field(size_t, length) + __dynamic_array(char, msg, length) + ), + TP_fast_assign( + __entry->cmd = *((u64 *) value + 3); + __entry->offset = offset; + __entry->length = length; + memcpy(__get_dynamic_array(msg), value, length); + ), + TP_printk("(%s) %s: %s", + decode_offset(__entry->offset), + __entry->offset == UCSI_CONTROL ? + decode_cmd(__entry->cmd) : "", + __print_hex(__get_dynamic_array(msg), __entry->length)) +); + +DEFINE_EVENT(cros_ec_opm_to_ppm, cros_ec_opm_to_ppm_rd, + TP_PROTO(u16 offset, const void *value, size_t length), + TP_ARGS(offset, value, length) +); + +DEFINE_EVENT(cros_ec_opm_to_ppm, cros_ec_opm_to_ppm_wr, + TP_PROTO(u16 offset, const void *value, size_t length), + TP_ARGS(offset, value, length) +); + +TRACE_EVENT(cros_ec_ppm_to_opm, + TP_PROTO(int x), + TP_ARGS(x), + TP_STRUCT__entry(__array(char, x, 0)), + TP_fast_assign((void)x), + TP_printk("notification%s", "") +); + +#endif /* __CROS_EC_UCSI_TRACE_H */ + +/* This part must be outside protection */ + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . + +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE cros_ec_ucsi_trace + +#include