From nobody Mon Apr 20 01:12:28 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9E484CCA47C for ; Thu, 23 Jun 2022 14:55:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232014AbiFWOzs (ORCPT ); Thu, 23 Jun 2022 10:55:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231521AbiFWOzr (ORCPT ); Thu, 23 Jun 2022 10:55:47 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id F34EE25B for ; Thu, 23 Jun 2022 07:55:46 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EC5CD13D5; Thu, 23 Jun 2022 07:55:46 -0700 (PDT) Received: from e120937-lin.home (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A2F6F3F66F; Thu, 23 Jun 2022 07:55:45 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: sudeep.holla@arm.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, lukasz.luba@arm.com, james.quinlan@broadcom.com, Cristian Marussi Subject: [PATCH 1/2] include: trace: Add SCMI full message tracing Date: Thu, 23 Jun 2022 15:55:32 +0100 Message-Id: <20220623145533.2882688-2-cristian.marussi@arm.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220623145533.2882688-1-cristian.marussi@arm.com> References: <20220623145533.2882688-1-cristian.marussi@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add a distinct trace event to dump full SCMI message headers and payloads. Signed-off-by: Cristian Marussi --- include/trace/events/scmi.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/include/trace/events/scmi.h b/include/trace/events/scmi.h index cee4b2b64ae4..40995c8416ba 100644 --- a/include/trace/events/scmi.h +++ b/include/trace/events/scmi.h @@ -112,6 +112,37 @@ TRACE_EVENT(scmi_rx_done, __entry->transfer_id, __entry->msg_id, __entry->protocol_id, __entry->seq, __entry->msg_type) ); + +TRACE_EVENT(scmi_msg_dump, + TP_PROTO(u8 protocol_id, u8 msg_id, unsigned char *tag, u16 seq, + int status, void *buf, size_t len), + TP_ARGS(protocol_id, msg_id, tag, seq, status, buf, len), + + TP_STRUCT__entry( + __field(u8, protocol_id) + __field(u8, msg_id) + __array(char, tag, 5) + __field(u16, seq) + __field(int, status) + __field(size_t, len) + __dynamic_array(unsigned char, cmd, len) + ), + + TP_fast_assign( + __entry->protocol_id =3D protocol_id; + __entry->msg_id =3D msg_id; + strscpy(__entry->tag, tag, 5); + __entry->seq =3D seq; + __entry->status =3D status; + __entry->len =3D len; + memcpy(__get_dynamic_array(cmd), buf, __entry->len); + ), + + TP_printk("[0x%02X]:%s:[0x%02X]:[%04X]:[%d]: %s", + __entry->protocol_id, __entry->tag, __entry->msg_id, + __entry->seq, __entry->status, + __print_hex_str(__get_dynamic_array(cmd), __entry->len)) +); #endif /* _TRACE_SCMI_H */ =20 /* This part must be outside protection */ --=20 2.32.0 From nobody Mon Apr 20 01:12:28 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0AB8AC433EF for ; Thu, 23 Jun 2022 14:55:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232073AbiFWOzy (ORCPT ); Thu, 23 Jun 2022 10:55:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50692 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231521AbiFWOzt (ORCPT ); Thu, 23 Jun 2022 10:55:49 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 672BEB3B for ; Thu, 23 Jun 2022 07:55:48 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4C5161474; Thu, 23 Jun 2022 07:55:48 -0700 (PDT) Received: from e120937-lin.home (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 01ABE3F66F; Thu, 23 Jun 2022 07:55:46 -0700 (PDT) From: Cristian Marussi To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: sudeep.holla@arm.com, f.fainelli@gmail.com, vincent.guittot@linaro.org, lukasz.luba@arm.com, james.quinlan@broadcom.com, Cristian Marussi Subject: [PATCH 2/2] firmware: arm_scmi: Use new SCMI full message tracing Date: Thu, 23 Jun 2022 15:55:33 +0100 Message-Id: <20220623145533.2882688-3-cristian.marussi@arm.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220623145533.2882688-1-cristian.marussi@arm.com> References: <20220623145533.2882688-1-cristian.marussi@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add full message tracing for all transmitted and successfully received SCMI commands, replies and notifications. Signed-off-by: Cristian Marussi --- drivers/firmware/arm_scmi/driver.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi= /driver.c index 8b7ac6663d57..276d3a4fd6b8 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -660,6 +660,11 @@ static void scmi_handle_notification(struct scmi_chan_= info *cinfo, smp_store_mb(xfer->priv, priv); info->desc->ops->fetch_notification(cinfo, info->desc->max_msg_size, xfer); + + trace_scmi_msg_dump(xfer->hdr.protocol_id, xfer->hdr.id, "NOTI", + xfer->hdr.seq, xfer->hdr.status, + xfer->rx.buf, xfer->rx.len); + scmi_notify(cinfo->handle, xfer->hdr.protocol_id, xfer->hdr.id, xfer->rx.buf, xfer->rx.len, ts); =20 @@ -694,6 +699,12 @@ static void scmi_handle_response(struct scmi_chan_info= *cinfo, smp_store_mb(xfer->priv, priv); info->desc->ops->fetch_response(cinfo, xfer); =20 + trace_scmi_msg_dump(xfer->hdr.protocol_id, xfer->hdr.id, + xfer->hdr.type =3D=3D MSG_TYPE_DELAYED_RESP ? + "DLYD" : "RESP", + xfer->hdr.seq, xfer->hdr.status, + xfer->rx.buf, xfer->rx.len); + trace_scmi_rx_done(xfer->transfer_id, xfer->hdr.id, xfer->hdr.protocol_id, xfer->hdr.seq, xfer->hdr.type); @@ -827,6 +838,12 @@ static int scmi_wait_for_message_response(struct scmi_= chan_info *cinfo, xfer->state =3D SCMI_XFER_RESP_OK; } spin_unlock_irqrestore(&xfer->lock, flags); + + /* Trace polled replies. */ + trace_scmi_msg_dump(xfer->hdr.protocol_id, xfer->hdr.id, + "RESP", + xfer->hdr.seq, xfer->hdr.status, + xfer->rx.buf, xfer->rx.len); } } else { /* And we wait for the response. */ @@ -903,6 +920,10 @@ static int do_xfer(const struct scmi_protocol_handle *= ph, return ret; } =20 + trace_scmi_msg_dump(xfer->hdr.protocol_id, xfer->hdr.id, "CMND", + xfer->hdr.seq, xfer->hdr.status, + xfer->tx.buf, xfer->tx.len); + ret =3D scmi_wait_for_message_response(cinfo, xfer); if (!ret && xfer->hdr.status) ret =3D scmi_to_linux_errno(xfer->hdr.status); --=20 2.32.0