ixgbe: Add support for E610 FW Admin Command Interface

Add low level support for Admin Command Interface (ACI). ACI is the
Firmware interface used by a driver to communicate with E610 adapter. Add
the following ACI features:
- data structures, macros, register definitions
- commands handling
- events handling

Co-developed-by: Stefan Wegrzyn <[email protected]>
Signed-off-by: Stefan Wegrzyn <[email protected]>
Co-developed-by: Jedrzej Jagielski <[email protected]>
Signed-off-by: Jedrzej Jagielski <[email protected]>
Reviewed-by: Michal Swiatkowski <[email protected]>
Reviewed-by: Simon Horman <[email protected]>
Tested-by: Bharath R <[email protected]>
Signed-off-by: Piotr Kwapulinski <[email protected]>
Signed-off-by: Tony Nguyen <[email protected]>

Author: pkwapuli

drivers/net/ethernet/intel/ixgbe/Makefile

@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-# Copyright(c) 1999 - 2018 Intel Corporation.
+# Copyright(c) 1999 - 2024 Intel Corporation.
 #
 # Makefile for the Intel(R) 10GbE PCI Express ethernet driver
 #
@@ -9,7 +9,7 @@ obj-$(CONFIG_IXGBE) += ixgbe.o
 ixgbe-y := ixgbe_main.o ixgbe_common.o ixgbe_ethtool.o \
            ixgbe_82599.o ixgbe_82598.o ixgbe_phy.o ixgbe_sriov.o \
            ixgbe_mbx.o ixgbe_x540.o ixgbe_x550.o ixgbe_lib.o ixgbe_ptp.o \
-           ixgbe_xsk.o
+           ixgbe_xsk.o ixgbe_e610.o
 
 ixgbe-$(CONFIG_IXGBE_DCB) +=  ixgbe_dcb.o ixgbe_dcb_82598.o \
                               ixgbe_dcb_82599.o ixgbe_dcb_nl.o

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

@@ -660,7 +660,11 @@ int ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
 	hw->bus.type = ixgbe_bus_type_pci_express;
 
 	/* Get the negotiated link width and speed from PCI config space */
-	link_status = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_LINK_STATUS);
+	if (hw->mac.type == ixgbe_mac_e610)
+		link_status = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_LINK_STATUS_E610);
+	else
+		link_status = ixgbe_read_pci_cfg_word(hw,
+						      IXGBE_PCI_LINK_STATUS);
 
 	hw->bus.width = ixgbe_convert_bus_width(link_status);
 	hw->bus.speed = ixgbe_convert_bus_speed(link_status);