ixgbe: Implement firmware interface to access some PHYs

Implement new interface for firmware commands to access some PHYs.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbe/ixgbe_common.h

@@ -116,6 +116,8 @@ u8 ixgbe_calculate_checksum(u8 *buffer, u32 length);
 s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, void *, u32 length,
 				 u32 timeout, bool return_data);
 s32 ixgbe_hic_unlocked(struct ixgbe_hw *hw, u32 *buffer, u32 len, u32 timeout);
+s32 ixgbe_fw_phy_activity(struct ixgbe_hw *hw, u16 activity,
+			  u32 (*data)[FW_PHY_ACT_DATA_COUNT]);
 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw);
 bool ixgbe_mng_present(struct ixgbe_hw *hw);
 bool ixgbe_mng_enabled(struct ixgbe_hw *hw);

drivers/net/ethernet/intel/ixgbe/ixgbe_type.h

@@ -2645,6 +2645,59 @@ enum ixgbe_fdir_pballoc_type {
 #define FW_INT_PHY_REQ_LEN		10
 #define FW_INT_PHY_REQ_READ		0
 #define FW_INT_PHY_REQ_WRITE		1
+#define FW_PHY_ACT_REQ_CMD		5
+#define FW_PHY_ACT_DATA_COUNT		4
+#define FW_PHY_ACT_REQ_LEN		(4 + 4 * FW_PHY_ACT_DATA_COUNT)
+#define FW_PHY_ACT_INIT_PHY		1
+#define FW_PHY_ACT_SETUP_LINK		2
+#define FW_PHY_ACT_LINK_SPEED_10	BIT(0)
+#define FW_PHY_ACT_LINK_SPEED_100	BIT(1)
+#define FW_PHY_ACT_LINK_SPEED_1G	BIT(2)
+#define FW_PHY_ACT_LINK_SPEED_2_5G	BIT(3)
+#define FW_PHY_ACT_LINK_SPEED_5G	BIT(4)
+#define FW_PHY_ACT_LINK_SPEED_10G	BIT(5)
+#define FW_PHY_ACT_LINK_SPEED_20G	BIT(6)
+#define FW_PHY_ACT_LINK_SPEED_25G	BIT(7)
+#define FW_PHY_ACT_LINK_SPEED_40G	BIT(8)
+#define FW_PHY_ACT_LINK_SPEED_50G	BIT(9)
+#define FW_PHY_ACT_LINK_SPEED_100G	BIT(10)
+#define FW_PHY_ACT_SETUP_LINK_PAUSE_SHIFT 16
+#define FW_PHY_ACT_SETUP_LINK_PAUSE_MASK (3 << \
+					  HW_PHY_ACT_SETUP_LINK_PAUSE_SHIFT)
+#define FW_PHY_ACT_SETUP_LINK_PAUSE_NONE 0u
+#define FW_PHY_ACT_SETUP_LINK_PAUSE_TX	1u
+#define FW_PHY_ACT_SETUP_LINK_PAUSE_RX	2u
+#define FW_PHY_ACT_SETUP_LINK_PAUSE_RXTX 3u
+#define FW_PHY_ACT_SETUP_LINK_LP	BIT(18)
+#define FW_PHY_ACT_SETUP_LINK_HP	BIT(19)
+#define FW_PHY_ACT_SETUP_LINK_EEE	BIT(20)
+#define FW_PHY_ACT_SETUP_LINK_AN	BIT(22)
+#define FW_PHY_ACT_SETUP_LINK_RSP_DOWN	BIT(0)
+#define FW_PHY_ACT_GET_LINK_INFO	3
+#define FW_PHY_ACT_GET_LINK_INFO_EEE	BIT(19)
+#define FW_PHY_ACT_GET_LINK_INFO_FC_TX	BIT(20)
+#define FW_PHY_ACT_GET_LINK_INFO_FC_RX	BIT(21)
+#define FW_PHY_ACT_GET_LINK_INFO_POWER	BIT(22)
+#define FW_PHY_ACT_GET_LINK_INFO_AN_COMPLETE	BIT(24)
+#define FW_PHY_ACT_GET_LINK_INFO_TEMP	BIT(25)
+#define FW_PHY_ACT_GET_LINK_INFO_LP_FC_TX	BIT(28)
+#define FW_PHY_ACT_GET_LINK_INFO_LP_FC_RX	BIT(29)
+#define FW_PHY_ACT_FORCE_LINK_DOWN	4
+#define FW_PHY_ACT_FORCE_LINK_DOWN_OFF	BIT(0)
+#define FW_PHY_ACT_PHY_SW_RESET		5
+#define FW_PHY_ACT_PHY_HW_RESET		6
+#define FW_PHY_ACT_GET_PHY_INFO		7
+#define FW_PHY_ACT_UD_2			0x1002
+#define FW_PHY_ACT_UD_2_10G_KR_EEE	BIT(6)
+#define FW_PHY_ACT_UD_2_10G_KX4_EEE	BIT(5)
+#define FW_PHY_ACT_UD_2_1G_KX_EEE	BIT(4)
+#define FW_PHY_ACT_UD_2_10G_T_EEE	BIT(3)
+#define FW_PHY_ACT_UD_2_1G_T_EEE	BIT(2)
+#define FW_PHY_ACT_UD_2_100M_TX_EEE	BIT(1)
+#define FW_PHY_ACT_RETRIES		50
+#define FW_PHY_INFO_SPEED_MASK		0xFFFu
+#define FW_PHY_INFO_ID_HI_MASK		0xFFFF0000u
+#define FW_PHY_INFO_ID_LO_MASK		0x0000FFFFu
 
 /* Host Interface Command Structures */
 struct ixgbe_hic_hdr {
@@ -2745,6 +2798,19 @@ struct ixgbe_hic_internal_phy_resp {
 	__be32 read_data;
 };
 
+struct ixgbe_hic_phy_activity_req {
+	struct ixgbe_hic_hdr hdr;
+	u8 port_number;
+	u8 pad;
+	__le16 activity_id;
+	__be32 data[FW_PHY_ACT_DATA_COUNT];
+};
+
+struct ixgbe_hic_phy_activity_resp {
+	struct ixgbe_hic_hdr hdr;
+	__be32 data[FW_PHY_ACT_DATA_COUNT];
+};
+
 /* Transmit Descriptor - Advanced */
 union ixgbe_adv_tx_desc {
 	struct {

drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c

@@ -402,6 +402,51 @@ ixgbe_write_i2c_combined_generic_unlocked(struct ixgbe_hw *hw,
 	return ixgbe_write_i2c_combined_generic_int(hw, addr, reg, val, false);
 }
 
+/**
+ * ixgbe_fw_phy_activity - Perform an activity on a PHY
+ * @hw: pointer to hardware structure
+ * @activity: activity to perform
+ * @data: Pointer to 4 32-bit words of data
+ */
+s32 ixgbe_fw_phy_activity(struct ixgbe_hw *hw, u16 activity,
+			  u32 (*data)[FW_PHY_ACT_DATA_COUNT])
+{
+	union {
+		struct ixgbe_hic_phy_activity_req cmd;
+		struct ixgbe_hic_phy_activity_resp rsp;
+	} hic;
+	u16 retries = FW_PHY_ACT_RETRIES;
+	s32 rc;
+	u32 i;
+
+	do {
+		memset(&hic, 0, sizeof(hic));
+		hic.cmd.hdr.cmd = FW_PHY_ACT_REQ_CMD;
+		hic.cmd.hdr.buf_len = FW_PHY_ACT_REQ_LEN;
+		hic.cmd.hdr.checksum = FW_DEFAULT_CHECKSUM;
+		hic.cmd.port_number = hw->bus.lan_id;
+		hic.cmd.activity_id = cpu_to_le16(activity);
+		for (i = 0; i < ARRAY_SIZE(hic.cmd.data); ++i)
+			hic.cmd.data[i] = cpu_to_be32((*data)[i]);
+
+		rc = ixgbe_host_interface_command(hw, &hic.cmd, sizeof(hic.cmd),
+						  IXGBE_HI_COMMAND_TIMEOUT,
+						  true);
+		if (rc)
+			return rc;
+		if (hic.rsp.hdr.cmd_or_resp.ret_status ==
+		    FW_CEM_RESP_STATUS_SUCCESS) {
+			for (i = 0; i < FW_PHY_ACT_DATA_COUNT; ++i)
+				(*data)[i] = be32_to_cpu(hic.rsp.data[i]);
+			return 0;
+		}
+		usleep_range(20, 30);
+		--retries;
+	} while (retries > 0);
+
+	return IXGBE_ERR_HOST_INTERFACE_COMMAND;
+}
+
 /** ixgbe_init_eeprom_params_X550 - Initialize EEPROM params
  *  @hw: pointer to hardware structure
  *