Received-SPF: pass (google.com: domain of linux-kernel+bounces-194235-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) client-ip=2604:1380:40f1:3f00::1;
From: Kory Maincent <kory.maincent@bootlin.com>
Date: Wed, 29 May 2024 16:09:31 +0200
Subject: [PATCH 4/8] net: pse-pd: pd692x0: Expand ethtool status message
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 8bit
Message-Id: <20240529-feature_poe_power_cap-v1-4-0c4b1d5953b8@bootlin.com>
References: <20240529-feature_poe_power_cap-v1-0-0c4b1d5953b8@bootlin.com>
In-Reply-To: <20240529-feature_poe_power_cap-v1-0-0c4b1d5953b8@bootlin.com>
To: "David S. Miller" <davem@davemloft.net>, 
 Eric Dumazet <edumazet@google.com>, Jakub Kicinski <kuba@kernel.org>, 
 Paolo Abeni <pabeni@redhat.com>, Donald Hunter <donald.hunter@gmail.com>, 
 Oleksij Rempel <o.rempel@pengutronix.de>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>, 
 linux-kernel@vger.kernel.org, netdev@vger.kernel.org, 
 Dent Project <dentproject@linuxfoundation.org>, kernel@pengutronix.de, 
 Kory Maincent <kory.maincent@bootlin.com>

From: "Kory Maincent (Dent Project)" <kory.maincent@bootlin.com>

This update expands pd692x0_ethtool_get_status() callback with newly
introduced details such as the detected class, current power delivered,
and a detailed status message.

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
---
 drivers/net/pse-pd/pd692x0.c | 96 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)

diff --git a/drivers/net/pse-pd/pd692x0.c b/drivers/net/pse-pd/pd692x0.c
index 6488b941703c..017a8efc43c4 100644
--- a/drivers/net/pse-pd/pd692x0.c
+++ b/drivers/net/pse-pd/pd692x0.c
@@ -73,6 +73,7 @@ enum {
 	PD692X0_MSG_SET_PORT_PARAM,
 	PD692X0_MSG_GET_PORT_STATUS,
 	PD692X0_MSG_DOWNLOAD_CMD,
+	PD692X0_MSG_GET_PORT_CLASS,
 
 	/* add new message above here */
 	PD692X0_MSG_CNT
@@ -149,6 +150,12 @@ static const struct pd692x0_msg pd692x0_msg_template_list[PD692X0_MSG_CNT] = {
 		.data = {0x16, 0x16, 0x99, 0x4e,
 			 0x4e, 0x4e, 0x4e, 0x4e},
 	},
+	[PD692X0_MSG_GET_PORT_CLASS] = {
+		.key = PD692X0_KEY_REQ,
+		.sub = {0x05, 0xc4},
+		.data = {0x4e, 0x4e, 0x4e, 0x4e,
+			 0x4e, 0x4e, 0x4e, 0x4e},
+	},
 };
 
 static u8 pd692x0_build_msg(struct pd692x0_msg *msg, u8 echo)
@@ -435,6 +442,79 @@ static int pd692x0_pi_is_enabled(struct pse_controller_dev *pcdev, int id)
 	}
 }
 
+struct pd692x0_status_msg {
+	int id;
+	const char msg[63];
+};
+
+static const struct pd692x0_status_msg pd692x0_status_msg_list[] = {
+	{.id = 0x06, .msg = "Port is off: Main supply voltage is high."},
+	{.id = 0x07, .msg = "Port is off: Main supply voltage is low."},
+	{.id = 0x08, .msg = "Port is off: Disable all ports pin is active."},
+	{.id = 0x0C, .msg = "Port is off: Non-existing port number."},
+	{.id = 0x11, .msg = "Port is yet undefined."},
+	{.id = 0x12, .msg = "Port is off: Internal hardware fault."},
+	{.id = 0x1A, .msg = "Port is off: User setting."},
+	{.id = 0x1B, .msg = "Port is off: Detection is in process."},
+	{.id = 0x1C, .msg = "Port is off: Non-802.3AF/AT powered device."},
+	{.id = 0x1E, .msg = "Port is off: Underload state."},
+	{.id = 0x1F, .msg = "Port is off: Overload state."},
+	{.id = 0x20, .msg = "Port is off: Power budget exceeded."},
+	{.id = 0x21, .msg = "Port is off: Internal hardware routing error."},
+	{.id = 0x22, .msg = "Port is off: Configuration change."},
+	{.id = 0x24, .msg = "Port is off: Voltage injection into the port."},
+	{.id = 0x25, .msg = "Port is off: Improper Capacitor Detection"},
+	{.id = 0x26, .msg = "Port is off: Discharged load."},
+	{.id = 0x34, .msg = "Port is off: Short condition."},
+	{.id = 0x35, .msg = "Port is off: Over temperature at the port."},
+	{.id = 0x36, .msg = "Port is off: Device is too hot."},
+	{.id = 0x37, .msg = "Unknown device port status."},
+	{.id = 0x3C, .msg = "Power Management-Static."},
+	{.id = 0x3D, .msg = "Power Management-Static\u2014OVL."},
+	{.id = 0x41, .msg = "Power denied: Hardware power limit."},
+	{.id = 0x43, .msg = "Port is off: Class error."},
+	{.id = 0x44, .msg = "Port turn off during Host crash."},
+	{.id = 0x45, .msg = "Delivered power port was forced to be shut down at host crash."},
+	{.id = 0x46, .msg = "An enabled port was forced to be shut down at Host crash."},
+	{.id = 0x47, .msg = "Force Power Crash Error."},
+	{.id = 0x48, .msg = "Port is off: Recovery UDL."},
+	{.id = 0x49, .msg = "Port is off: Recovery PG Event."},
+	{.id = 0x4A, .msg = "Port is off: Recovery OVL."},
+	{.id = 0x4B, .msg = "Port is off: Recovery SC."},
+	{.id = 0x4C, .msg = "Port is off: Recovery Voltage injection."},
+	{.id = 0x80, .msg = "2P Port delivering non-IEEE."},
+	{.id = 0x81, .msg = "2P Port delivering IEEE."},
+	{.id = 0x82, .msg = "4P Port that deliver only 2 Pair non-IEEE."},
+	{.id = 0x83, .msg = "4P Port delivering 2P non-IEEE."},
+	{.id = 0x84, .msg = "4P Port delivering 4P non-IEEE."},
+	{.id = 0x85, .msg = "4P Port delivering 2P IEEE SSPD."},
+	{.id = 0x86, .msg = "4P Port delivering 4P IEEE SSPD."},
+	{.id = 0x87, .msg = "4P Port delivering 2P IEEE DSPD in the first phase."},
+	{.id = 0x88, .msg = "4P Port delivering 2P IEEE DSPD."},
+	{.id = 0x89, .msg = "4P Port delivering 4P IEEE DSPD."},
+	{.id = 0x90, .msg = "Force Power BT 2P."},
+	{.id = 0x91, .msg = "Force Power BT 4P."},
+	{.id = 0xA0, .msg = "Force Power BT error."},
+	{.id = 0xA7, .msg = "Connection Check error."},
+	{.id = 0xA8, .msg = "Open Port is not connected."},
+	{ /* sentinel */ }
+};
+
+static const char *pd692x0_get_status_msg(int id)
+{
+	const struct pd692x0_status_msg *msg_list;
+
+	msg_list = pd692x0_status_msg_list;
+	while (msg_list->id) {
+		if (msg_list->id == id)
+			return msg_list->msg;
+
+		msg_list++;
+	}
+
+	return NULL;
+}
+
 static int pd692x0_ethtool_get_status(struct pse_controller_dev *pcdev,
 				      unsigned long id,
 				      struct netlink_ext_ack *extack,
@@ -442,6 +522,7 @@ static int pd692x0_ethtool_get_status(struct pse_controller_dev *pcdev,
 {
 	struct pd692x0_priv *priv = to_pd692x0_priv(pcdev);
 	struct pd692x0_msg msg, buf = {0};
+	u32 class;
 	int ret;
 
 	ret = pd692x0_fw_unavailable(priv);
@@ -471,6 +552,21 @@ static int pd692x0_ethtool_get_status(struct pse_controller_dev *pcdev,
 
 	priv->admin_state[id] = status->c33_admin_state;
 
+	status->c33_pw_status_msg = pd692x0_get_status_msg(buf.sub[0]);
+
+	status->c33_actual_pw = (buf.data[0] << 4 | buf.data[1]) * 100;
+
+	memset(&buf, 0, sizeof(buf));
+	msg = pd692x0_msg_template_list[PD692X0_MSG_GET_PORT_CLASS];
+	msg.sub[2] = id;
+	ret = pd692x0_sendrecv_msg(priv, &msg, &buf);
+	if (ret < 0)
+		return ret;
+
+	class = buf.data[3] >> 4;
+	if (class <= 8)
+		status->c33_pw_class = class;
+
 	return 0;
 }
 

-- 
2.34.1