amd-xgbe: Prepare for introduction of clause 37 autoneg

Prepare for the future introduction of clause 37 auto-negotiation by
updating the current auto-negotiation related functions to identify
them as clause 73 functions. Move interrupt enablement to the
enable/disable auto-negotiation functions. Update what will be common
routines to check for the current type of AN and process accordingly.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/amd/xgbe/xgbe-common.h

@@ -1052,6 +1052,11 @@
 #endif
 
 /* MDIO mask values */
+#define XGBE_AN_CL73_INT_CMPLT		BIT(0)
+#define XGBE_AN_CL73_INC_LINK		BIT(1)
+#define XGBE_AN_CL73_PG_RCV		BIT(2)
+#define XGBE_AN_CL73_INT_MASK		0x07
+
 #define XGBE_XNP_MCF_NULL_MESSAGE	0x001
 #define XGBE_XNP_ACK_PROCESSED		BIT(12)
 #define XGBE_XNP_MP_FORMATTED		BIT(13)

drivers/net/ethernet/amd/xgbe/xgbe-phy-v1.c

@@ -295,6 +295,11 @@ static enum xgbe_mode xgbe_phy_an_outcome(struct xgbe_prv_data *pdata)
 	return mode;
 }
 
+static enum xgbe_an_mode xgbe_phy_an_mode(struct xgbe_prv_data *pdata)
+{
+	return XGBE_AN_MODE_CL73;
+}
+
 static void xgbe_phy_pcs_power_cycle(struct xgbe_prv_data *pdata)
 {
 	unsigned int reg;
@@ -814,6 +819,8 @@ void xgbe_init_function_ptrs_phy_v1(struct xgbe_phy_if *phy_if)
 	phy_impl->switch_mode		= xgbe_phy_switch_mode;
 	phy_impl->cur_mode		= xgbe_phy_cur_mode;
 
+	phy_impl->an_mode		= xgbe_phy_an_mode;
+
 	phy_impl->an_outcome		= xgbe_phy_an_outcome;
 
 	phy_impl->kr_training_pre	= xgbe_phy_kr_training_pre;

drivers/net/ethernet/amd/xgbe/xgbe.h

@@ -263,11 +263,6 @@
 #define XGBE_AN_MS_TIMEOUT		500
 #define XGBE_LINK_TIMEOUT		10
 
-#define XGBE_AN_INT_CMPLT		0x01
-#define XGBE_AN_INC_LINK		0x02
-#define XGBE_AN_PG_RCV			0x04
-#define XGBE_AN_INT_MASK		0x07
-
 struct xgbe_prv_data;
 
 struct xgbe_packet_data {
@@ -470,6 +465,11 @@ enum xgbe_speed {
 	XGBE_SPEEDS,
 };
 
+enum xgbe_an_mode {
+	XGBE_AN_MODE_CL73 = 0,
+	XGBE_AN_MODE_NONE,
+};
+
 enum xgbe_an {
 	XGBE_AN_READY = 0,
 	XGBE_AN_PAGE_RECEIVED,
@@ -699,6 +699,9 @@ struct xgbe_phy_impl_if {
 	/* Retrieve current mode */
 	enum xgbe_mode (*cur_mode)(struct xgbe_prv_data *);
 
+	/* Retrieve current auto-negotiation mode */
+	enum xgbe_an_mode (*an_mode)(struct xgbe_prv_data *);
+
 	/* Process results of auto-negotiation */
 	enum xgbe_mode (*an_outcome)(struct xgbe_prv_data *);
 
@@ -968,6 +971,7 @@ struct xgbe_prv_data {
 	unsigned int parallel_detect;
 	unsigned int fec_ability;
 	unsigned long an_start;
+	enum xgbe_an_mode an_mode;
 
 	unsigned int lpm_ctrl;		/* CTRL1 for resume */