netdev - [PATCH net-next RFC 7/7] bnxt_en: Add bnxt_en initial port params table and register it

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Date:   Wed,  5 Dec 2018 11:27:00 +0530
From:   Vasundhara Volam <vasundhara-v.volam@...adcom.com>
To:     davem@...emloft.net
Cc:     michael.chan@...adcom.com, jiri@...lanox.com,
        netdev@...r.kernel.org
Subject: [PATCH net-next RFC 7/7] bnxt_en: Add bnxt_en initial port params table and register it

Register devlink_port with devlink and create initial port params
table for bnxt_en. The table consists of a generic parameter:

wake-on-lan: Enables Wake on Lan for this port when magic packet
is received with this port's MAC address using ACPI pattern.
If enabled, the controller asserts a wake pin upon reception of
WoL packet.  ACPI (Advanced Configuration and Power Interface) is
an industry specification for the efficient handling of power
consumption in desktop and mobile computers.

Cc: Michael Chan <michael.chan@...adcom.com>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.h         |  1 +
 drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c | 35 +++++++++++++++++++++++
 drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h |  1 +
 3 files changed, 37 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 9e99d4a..0ba62b3 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -1585,6 +1585,7 @@ struct bnxt {
 
 	/* devlink interface and vf-rep structs */
 	struct devlink		*dl;
+	struct devlink_port	dl_port;
 	enum devlink_eswitch_mode eswitch_mode;
 	struct bnxt_vf_rep	**vf_reps; /* array of vf-rep ptrs */
 	u16			*cfa_code_map; /* cfa_code -> vf_idx map */
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
index 140dbd6..a2930d5 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.c
@@ -26,6 +26,10 @@ enum bnxt_dl_param_id {
 	BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK,
 };
 
+enum bnxt_dl_port_param_id {
+	BNXT_DEVLINK_PORT_PARAM_ID_BASE = DEVLINK_PORT_PARAM_GENERIC_ID_MAX,
+};
+
 static const struct bnxt_dl_nvm_param nvm_params[] = {
 	{DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV, NVM_OFF_ENABLE_SRIOV,
 	 BNXT_NVM_SHARED_CFG, 1},
@@ -37,6 +41,8 @@ enum bnxt_dl_param_id {
 	 NVM_OFF_MSIX_VEC_PER_PF_MIN, BNXT_NVM_SHARED_CFG, 7},
 	{BNXT_DEVLINK_PARAM_ID_GRE_VER_CHECK, NVM_OFF_DIS_GRE_VER_CHECK,
 	 BNXT_NVM_SHARED_CFG, 1},
+
+	{DEVLINK_PORT_PARAM_GENERIC_ID_WOL, NVM_OFF_WOL, BNXT_NVM_PORT_CFG, 1},
 };
 
 static int bnxt_hwrm_nvm_req(struct bnxt *bp, u32 param_id, void *msg,
@@ -188,6 +194,12 @@ static int bnxt_dl_msix_validate(struct devlink *dl, u32 id,
 			     NULL),
 };
 
+static const struct devlink_param bnxt_dl_port_params[] = {
+	DEVLINK_PORT_PARAM_GENERIC(WOL, BIT(DEVLINK_PARAM_CMODE_PERMANENT),
+				   bnxt_dl_nvm_param_get, bnxt_dl_nvm_param_set,
+				   NULL),
+};
+
 int bnxt_dl_register(struct bnxt *bp)
 {
 	struct devlink *dl;
@@ -225,8 +237,28 @@ int bnxt_dl_register(struct bnxt *bp)
 		goto err_dl_unreg;
 	}
 
+	rc = devlink_port_register(dl, &bp->dl_port, bp->pf.port_id);
+	if (rc) {
+		netdev_warn(bp->dev, "devlink_port_register failed. rc=%d",
+			    rc);
+		goto err_dl_param_unreg;
+	}
+	bp->dl_port.type = DEVLINK_PORT_TYPE_ETH;
+
+	rc = devlink_port_params_register(&bp->dl_port, bnxt_dl_port_params,
+					  ARRAY_SIZE(bnxt_dl_port_params));
+	if (rc) {
+		netdev_warn(bp->dev, "devlink_port_params_register failed. rc=%d",
+			    rc);
+		goto err_dl_port_unreg;
+	}
 	return 0;
 
+err_dl_port_unreg:
+	devlink_port_unregister(&bp->dl_port);
+err_dl_param_unreg:
+	devlink_params_unregister(dl, bnxt_dl_params,
+				  ARRAY_SIZE(bnxt_dl_params));
 err_dl_unreg:
 	devlink_unregister(dl);
 err_dl_free:
@@ -242,6 +274,9 @@ void bnxt_dl_unregister(struct bnxt *bp)
 	if (!dl)
 		return;
 
+	devlink_port_params_unregister(&bp->dl_port, bnxt_dl_port_params,
+				       ARRAY_SIZE(bnxt_dl_port_params));
+	devlink_port_unregister(&bp->dl_port);
 	devlink_params_unregister(dl, bnxt_dl_params,
 				  ARRAY_SIZE(bnxt_dl_params));
 	devlink_unregister(dl);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
index 5b6b2c7..da065ca 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_devlink.h
@@ -35,6 +35,7 @@ static inline void bnxt_link_bp_to_dl(struct bnxt *bp, struct devlink *dl)
 
 #define NVM_OFF_MSIX_VEC_PER_PF_MAX	108
 #define NVM_OFF_MSIX_VEC_PER_PF_MIN	114
+#define NVM_OFF_WOL			152
 #define NVM_OFF_IGNORE_ARI		164
 #define NVM_OFF_DIS_GRE_VER_CHECK	171
 #define NVM_OFF_ENABLE_SRIOV		401
-- 
1.8.3.1