netdev - [PATCH net-next 2/6] ice: add CGU info to devlink info callback

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Date: Fri,  1 Dec 2023 10:08:40 -0800
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	netdev@...r.kernel.org
Cc: Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>,
	anthony.l.nguyen@...el.com,
	jiri@...nulli.us,
	Larysa Zaremba <larysa.zaremba@...el.com>,
	Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com>
Subject: [PATCH net-next 2/6] ice: add CGU info to devlink info callback

From: Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>

If Clock Generation Unit is present on NIC board user shall know its
details.
Provide the devlink info callback with a new:
- fixed type object (cgu.id) indicating hardware variant of onboard CGU,
- running type object (fw.cgu) consisting of CGU id, config and firmware
versions.
These information shall be known for debugging purposes.

Test (on NIC board with CGU)
$ devlink dev info <bus_name>/<dev_name> | grep cgu
        cgu.id 36
        fw.cgu 8032.16973825.6021

Test (on NIC board without CGU)
$ devlink dev info <bus_name>/<dev_name> | grep cgu -c
0

Reviewed-by: Larysa Zaremba <larysa.zaremba@...el.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 Documentation/networking/devlink/ice.rst     |  9 +++++++++
 drivers/net/ethernet/intel/ice/ice_devlink.c | 20 ++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/Documentation/networking/devlink/ice.rst b/Documentation/networking/devlink/ice.rst
index 2f60e34ab926..7f30ebd5debb 100644
--- a/Documentation/networking/devlink/ice.rst
+++ b/Documentation/networking/devlink/ice.rst
@@ -38,6 +38,10 @@ The ``ice`` driver reports the following versions
       - fixed
       - K65390-000
       - The Product Board Assembly (PBA) identifier of the board.
+    * - ``cgu.id``
+      - fixed
+      - 36
+      - The Clock Generation Unit (CGU) hardware revision identifier.
     * - ``fw.mgmt``
       - running
       - 2.1.7
@@ -104,6 +108,11 @@ The ``ice`` driver reports the following versions
       - running
       - 0xee16ced7
       - The first 4 bytes of the hash of the netlist module contents.
+    * - ``fw.cgu``
+      - running
+      - 8032.16973825.6021
+      - The version of Clock Generation Unit (CGU). Format:
+        <CGU type>.<configuration version>.<firmware version>.
 
 Flash Update
 ============
diff --git a/drivers/net/ethernet/intel/ice/ice_devlink.c b/drivers/net/ethernet/intel/ice/ice_devlink.c
index f4e24d11ebd0..65be56f2af9e 100644
--- a/drivers/net/ethernet/intel/ice/ice_devlink.c
+++ b/drivers/net/ethernet/intel/ice/ice_devlink.c
@@ -193,6 +193,24 @@ ice_info_pending_netlist_build(struct ice_pf __always_unused *pf,
 		snprintf(ctx->buf, sizeof(ctx->buf), "0x%08x", netlist->hash);
 }
 
+static void ice_info_cgu_fw_build(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+	u32 id, cfg_ver, fw_ver;
+
+	if (!ice_is_feature_supported(pf, ICE_F_CGU))
+		return;
+	if (ice_aq_get_cgu_info(&pf->hw, &id, &cfg_ver, &fw_ver))
+		return;
+	snprintf(ctx->buf, sizeof(ctx->buf), "%u.%u.%u", id, cfg_ver, fw_ver);
+}
+
+static void ice_info_cgu_id(struct ice_pf *pf, struct ice_info_ctx *ctx)
+{
+	if (!ice_is_feature_supported(pf, ICE_F_CGU))
+		return;
+	snprintf(ctx->buf, sizeof(ctx->buf), "%u", pf->hw.cgu_part_number);
+}
+
 #define fixed(key, getter) { ICE_VERSION_FIXED, key, getter, NULL }
 #define running(key, getter) { ICE_VERSION_RUNNING, key, getter, NULL }
 #define stored(key, getter, fallback) { ICE_VERSION_STORED, key, getter, fallback }
@@ -235,6 +253,8 @@ static const struct ice_devlink_version {
 	running("fw.app.bundle_id", ice_info_ddp_pkg_bundle_id),
 	combined("fw.netlist", ice_info_netlist_ver, ice_info_pending_netlist_ver),
 	combined("fw.netlist.build", ice_info_netlist_build, ice_info_pending_netlist_build),
+	fixed("cgu.id", ice_info_cgu_id),
+	running("fw.cgu", ice_info_cgu_fw_build),
 };
 
 /**
-- 
2.41.0