net: marvell: prestera: add firmware v4.0 support

Add firmware (FW) version 4.0 support for Marvell Prestera
driver.

Major changes have been made to new v4.0 FW ABI to add support
of new features, introduce the stability of the FW ABI and ensure
better forward compatibility for the future driver vesrions.

Current v4.0 FW feature set support does not expect any changes
to ABI, as it was defined and tested through long period of time.
The ABI may be extended in case of new features, but it will not
break the backward compatibility.

ABI major changes done in v4.0:
- L1 ABI, where MAC and PHY API configuration are split.
- ACL has been split to low-level TCAM and Counters ABI
  to provide more HW ACL capabilities for future driver
  versions.

To support backward support, the addition compatibility layer is
required in the driver which will have two different codebase under
"if FW-VER elif FW-VER else" conditions that will be removed
in the future anyway, So, the idea was to break backward support
and focus on more stable FW instead of supporting old version
with very minimal and limited set of features/capabilities.

Improve FW msg validation:
 * Use __le64, __le32, __le16 types in msg to/from FW to
   catch endian mismatch by sparse.
 * Use BUILD_BUG_ON for structures sent/recv to/from FW.

Co-developed-by: Vadym Kochan <[email protected]>
Signed-off-by: Vadym Kochan <[email protected]>
Signed-off-by: Yevhen Orlov <[email protected]>
Signed-off-by: Taras Chornyi <[email protected]>
Signed-off-by: Volodymyr Mytnyk <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

Author: Volodymyr Mytnyk

drivers/net/ethernet/marvell/prestera/prestera.h

@@ -53,6 +53,8 @@ struct prestera_port_stats {
 	u64 good_octets_sent;
 };
 
+#define PRESTERA_AP_PORT_MAX   (10)
+
 struct prestera_port_caps {
 	u64 supp_link_modes;
 	u8 supp_fec;
@@ -69,6 +71,39 @@ struct prestera_lag {
 
 struct prestera_flow_block;
 
+struct prestera_port_mac_state {
+	u32 mode;
+	u32 speed;
+	bool oper;
+	u8 duplex;
+	u8 fc;
+	u8 fec;
+};
+
+struct prestera_port_phy_state {
+	u64 lmode_bmap;
+	struct {
+		bool pause;
+		bool asym_pause;
+	} remote_fc;
+	u8 mdix;
+};
+
+struct prestera_port_mac_config {
+	u32 mode;
+	u32 speed;
+	bool admin;
+	u8 inband;
+	u8 duplex;
+	u8 fec;
+};
+
+struct prestera_port_phy_config {
+	u32 mode;
+	bool admin;
+	u8 mdix;
+};
+
 struct prestera_port {
 	struct net_device *dev;
 	struct prestera_switch *sw;
@@ -91,6 +126,10 @@ struct prestera_port {
 		struct prestera_port_stats stats;
 		struct delayed_work caching_dw;
 	} cached_hw_stats;
+	struct prestera_port_mac_config cfg_mac;
+	struct prestera_port_phy_config cfg_phy;
+	struct prestera_port_mac_state state_mac;
+	struct prestera_port_phy_state state_phy;
 };
 
 struct prestera_device {
@@ -107,7 +146,7 @@ struct prestera_device {
 	int (*recv_msg)(struct prestera_device *dev, void *msg, size_t size);
 
 	/* called by higher layer to send request to the firmware */
-	int (*send_req)(struct prestera_device *dev, void *in_msg,
+	int (*send_req)(struct prestera_device *dev, int qid, void *in_msg,
 			size_t in_size, void *out_msg, size_t out_size,
 			unsigned int wait);
 };
@@ -129,13 +168,28 @@ enum prestera_rxtx_event_id {
 
 enum prestera_port_event_id {
 	PRESTERA_PORT_EVENT_UNSPEC,
-	PRESTERA_PORT_EVENT_STATE_CHANGED,
+	PRESTERA_PORT_EVENT_MAC_STATE_CHANGED,
 };
 
 struct prestera_port_event {
 	u32 port_id;
 	union {
-		u32 oper_state;
+		struct {
+			u32 mode;
+			u32 speed;
+			u8 oper;
+			u8 duplex;
+			u8 fc;
+			u8 fec;
+		} mac;
+		struct {
+			u64 lmode_bmap;
+			struct {
+				bool pause;
+				bool asym_pause;
+			} remote_fc;
+			u8 mdix;
+		} phy;
 	} data;
 };
 
@@ -223,11 +277,16 @@ void prestera_device_unregister(struct prestera_device *dev);
 struct prestera_port *prestera_port_find_by_hwid(struct prestera_switch *sw,
 						 u32 dev_id, u32 hw_id);
 
-int prestera_port_autoneg_set(struct prestera_port *port, bool enable,
-			      u64 adver_link_modes, u8 adver_fec);
+int prestera_port_autoneg_set(struct prestera_port *port, u64 link_modes);
 
 struct prestera_port *prestera_find_port(struct prestera_switch *sw, u32 id);
 
+int prestera_port_cfg_mac_read(struct prestera_port *port,
+			       struct prestera_port_mac_config *cfg);
+
+int prestera_port_cfg_mac_write(struct prestera_port *port,
+				struct prestera_port_mac_config *cfg);
+
 struct prestera_port *prestera_port_dev_lower_find(struct net_device *dev);
 
 int prestera_port_pvid_set(struct prestera_port *port, u16 vid);