Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 5710 insertions, 0 deletions

diff --git a/drivers/net/ethernet/atheros/atl1c/Makefile b/drivers/net/ethernet/atheros/atl1c/Makefile
new file mode 100644
index 000000000..02d025029
--- /dev/null
+++ b/drivers/net/ethernet/atheros/atl1c/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_ATL1C) += atl1c.o
+atl1c-objs := atl1c_main.o atl1c_hw.o atl1c_ethtool.o
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c.h b/drivers/net/ethernet/atheros/atl1c/atl1c.h
new file mode 100644
index 000000000..63ba64dbb
--- /dev/null
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c.h
@@ -0,0 +1,593 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright(c) 2008 - 2009 Atheros Corporation. All rights reserved.
+ *
+ * Derived from Intel e1000 driver
+ * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
+ */
+
+#ifndef _ATL1C_H_
+#define _ATL1C_H_
+
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/list.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/ipv6.h>
+#include <linux/udp.h>
+#include <linux/mii.h>
+#include <linux/io.h>
+#include <linux/vmalloc.h>
+#include <linux/pagemap.h>
+#include <linux/tcp.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/workqueue.h>
+#include <net/checksum.h>
+#include <net/ip6_checksum.h>
+
+#include "atl1c_hw.h"
+
+/* Wake Up Filter Control */
+#define AT_WUFC_LNKC 0x00000001 /* Link Status Change Wakeup Enable */
+#define AT_WUFC_MAG  0x00000002 /* Magic Packet Wakeup Enable */
+#define AT_WUFC_EX   0x00000004 /* Directed Exact Wakeup Enable */
+#define AT_WUFC_MC   0x00000008 /* Multicast Wakeup Enable */
+#define AT_WUFC_BC   0x00000010 /* Broadcast Wakeup Enable */
+
+#define AT_VLAN_TO_TAG(_vlan, _tag)	   \
+	_tag =  ((((_vlan) >> 8) & 0xFF)  |\
+		 (((_vlan) & 0xFF) << 8))
+
+#define AT_TAG_TO_VLAN(_tag, _vlan) 	 \
+	_vlan = ((((_tag) >> 8) & 0xFF) |\
+		(((_tag) & 0xFF) << 8))
+
+#define SPEED_0		   0xffff
+#define HALF_DUPLEX        1
+#define FULL_DUPLEX        2
+
+#define AT_RX_BUF_SIZE		(ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)
+#define MAX_JUMBO_FRAME_SIZE	(6*1024)
+
+#define AT_MAX_RECEIVE_QUEUE    4
+#define AT_DEF_RECEIVE_QUEUE	1
+#define AT_MAX_TRANSMIT_QUEUE  4
+
+#define AT_DMA_HI_ADDR_MASK     0xffffffff00000000ULL
+#define AT_DMA_LO_ADDR_MASK     0x00000000ffffffffULL
+
+#define AT_TX_WATCHDOG  (5 * HZ)
+#define AT_MAX_INT_WORK		5
+#define AT_TWSI_EEPROM_TIMEOUT 	100
+#define AT_HW_MAX_IDLE_DELAY 	10
+#define AT_SUSPEND_LINK_TIMEOUT 100
+
+#define AT_ASPM_L0S_TIMER	6
+#define AT_ASPM_L1_TIMER	12
+#define AT_LCKDET_TIMER		12
+
+#define ATL1C_PCIE_L0S_L1_DISABLE 	0x01
+#define ATL1C_PCIE_PHY_RESET		0x02
+
+#define ATL1C_ASPM_L0s_ENABLE		0x0001
+#define ATL1C_ASPM_L1_ENABLE		0x0002
+
+#define AT_REGS_LEN	(74 * sizeof(u32))
+#define AT_EEPROM_LEN 	512
+
+#define ATL1C_GET_DESC(R, i, type)	(&(((type *)((R)->desc))[i]))
+#define ATL1C_RFD_DESC(R, i)	ATL1C_GET_DESC(R, i, struct atl1c_rx_free_desc)
+#define ATL1C_TPD_DESC(R, i)	ATL1C_GET_DESC(R, i, struct atl1c_tpd_desc)
+#define ATL1C_RRD_DESC(R, i)	ATL1C_GET_DESC(R, i, struct atl1c_recv_ret_status)
+
+/* tpd word 1 bit 0:7 General Checksum task offload */
+#define TPD_L4HDR_OFFSET_MASK	0x00FF
+#define TPD_L4HDR_OFFSET_SHIFT	0
+
+/* tpd word 1 bit 0:7 Large Send task offload (IPv4/IPV6) */
+#define TPD_TCPHDR_OFFSET_MASK	0x00FF
+#define TPD_TCPHDR_OFFSET_SHIFT	0
+
+/* tpd word 1 bit 0:7 Custom Checksum task offload */
+#define TPD_PLOADOFFSET_MASK	0x00FF
+#define TPD_PLOADOFFSET_SHIFT	0
+
+/* tpd word 1 bit 8:17 */
+#define TPD_CCSUM_EN_MASK	0x0001
+#define TPD_CCSUM_EN_SHIFT	8
+#define TPD_IP_CSUM_MASK	0x0001
+#define TPD_IP_CSUM_SHIFT	9
+#define TPD_TCP_CSUM_MASK	0x0001
+#define TPD_TCP_CSUM_SHIFT	10
+#define TPD_UDP_CSUM_MASK	0x0001
+#define TPD_UDP_CSUM_SHIFT	11
+#define TPD_LSO_EN_MASK		0x0001	/* TCP Large Send Offload */
+#define TPD_LSO_EN_SHIFT	12
+#define TPD_LSO_VER_MASK	0x0001
+#define TPD_LSO_VER_SHIFT	13 	/* 0 : ipv4; 1 : ipv4/ipv6 */
+#define TPD_CON_VTAG_MASK	0x0001
+#define TPD_CON_VTAG_SHIFT	14
+#define TPD_INS_VTAG_MASK	0x0001
+#define TPD_INS_VTAG_SHIFT	15
+#define TPD_IPV4_PACKET_MASK	0x0001  /* valid when LSO VER  is 1 */
+#define TPD_IPV4_PACKET_SHIFT	16
+#define TPD_ETH_TYPE_MASK	0x0001
+#define TPD_ETH_TYPE_SHIFT	17	/* 0 : 802.3 frame; 1 : Ethernet */
+
+/* tpd word 18:25 Custom Checksum task offload */
+#define TPD_CCSUM_OFFSET_MASK	0x00FF
+#define TPD_CCSUM_OFFSET_SHIFT	18
+#define TPD_CCSUM_EPAD_MASK	0x0001
+#define TPD_CCSUM_EPAD_SHIFT	30
+
+/* tpd word 18:30 Large Send task offload (IPv4/IPV6) */
+#define TPD_MSS_MASK            0x1FFF
+#define TPD_MSS_SHIFT		18
+
+#define TPD_EOP_MASK		0x0001
+#define TPD_EOP_SHIFT		31
+
+struct atl1c_tpd_desc {
+	__le16	buffer_len; /* include 4-byte CRC */
+	__le16	vlan_tag;
+	__le32	word1;
+	__le64	buffer_addr;
+};
+
+struct atl1c_tpd_ext_desc {
+	u32 reservd_0;
+	__le32 word1;
+	__le32 pkt_len;
+	u32 reservd_1;
+};
+/* rrs word 0 bit 0:31 */
+#define RRS_RX_CSUM_MASK	0xFFFF
+#define RRS_RX_CSUM_SHIFT	0
+#define RRS_RX_RFD_CNT_MASK	0x000F
+#define RRS_RX_RFD_CNT_SHIFT	16
+#define RRS_RX_RFD_INDEX_MASK	0x0FFF
+#define RRS_RX_RFD_INDEX_SHIFT	20
+
+/* rrs flag bit 0:16 */
+#define RRS_HEAD_LEN_MASK	0x00FF
+#define RRS_HEAD_LEN_SHIFT	0
+#define RRS_HDS_TYPE_MASK	0x0003
+#define RRS_HDS_TYPE_SHIFT	8
+#define RRS_CPU_NUM_MASK	0x0003
+#define	RRS_CPU_NUM_SHIFT	10
+#define RRS_HASH_FLG_MASK	0x000F
+#define RRS_HASH_FLG_SHIFT	12
+
+#define RRS_HDS_TYPE_HEAD	1
+#define RRS_HDS_TYPE_DATA	2
+
+#define RRS_IS_NO_HDS_TYPE(flag) \
+	((((flag) >> (RRS_HDS_TYPE_SHIFT)) & RRS_HDS_TYPE_MASK) == 0)
+
+#define RRS_IS_HDS_HEAD(flag) \
+	((((flag) >> (RRS_HDS_TYPE_SHIFT)) & RRS_HDS_TYPE_MASK) == \
+			RRS_HDS_TYPE_HEAD)
+
+#define RRS_IS_HDS_DATA(flag) \
+	((((flag) >> (RRS_HDS_TYPE_SHIFT)) & RRS_HDS_TYPE_MASK) == \
+			RRS_HDS_TYPE_DATA)
+
+/* rrs word 3 bit 0:31 */
+#define RRS_PKT_SIZE_MASK	0x3FFF
+#define RRS_PKT_SIZE_SHIFT	0
+#define RRS_ERR_L4_CSUM_MASK	0x0001
+#define RRS_ERR_L4_CSUM_SHIFT	14
+#define RRS_ERR_IP_CSUM_MASK	0x0001
+#define RRS_ERR_IP_CSUM_SHIFT	15
+#define RRS_VLAN_INS_MASK	0x0001
+#define RRS_VLAN_INS_SHIFT	16
+#define RRS_PROT_ID_MASK	0x0007
+#define RRS_PROT_ID_SHIFT	17
+#define RRS_RX_ERR_SUM_MASK	0x0001
+#define RRS_RX_ERR_SUM_SHIFT	20
+#define RRS_RX_ERR_CRC_MASK	0x0001
+#define RRS_RX_ERR_CRC_SHIFT	21
+#define RRS_RX_ERR_FAE_MASK	0x0001
+#define RRS_RX_ERR_FAE_SHIFT	22
+#define RRS_RX_ERR_TRUNC_MASK	0x0001
+#define RRS_RX_ERR_TRUNC_SHIFT	23
+#define RRS_RX_ERR_RUNC_MASK	0x0001
+#define RRS_RX_ERR_RUNC_SHIFT	24
+#define RRS_RX_ERR_ICMP_MASK	0x0001
+#define RRS_RX_ERR_ICMP_SHIFT	25
+#define RRS_PACKET_BCAST_MASK	0x0001
+#define RRS_PACKET_BCAST_SHIFT	26
+#define RRS_PACKET_MCAST_MASK	0x0001
+#define RRS_PACKET_MCAST_SHIFT	27
+#define RRS_PACKET_TYPE_MASK	0x0001
+#define RRS_PACKET_TYPE_SHIFT	28
+#define RRS_FIFO_FULL_MASK	0x0001
+#define RRS_FIFO_FULL_SHIFT	29
+#define RRS_802_3_LEN_ERR_MASK 	0x0001
+#define RRS_802_3_LEN_ERR_SHIFT 30
+#define RRS_RXD_UPDATED_MASK	0x0001
+#define RRS_RXD_UPDATED_SHIFT	31
+
+#define RRS_ERR_L4_CSUM         0x00004000
+#define RRS_ERR_IP_CSUM         0x00008000
+#define RRS_VLAN_INS            0x00010000
+#define RRS_RX_ERR_SUM          0x00100000
+#define RRS_RX_ERR_CRC          0x00200000
+#define RRS_802_3_LEN_ERR	0x40000000
+#define RRS_RXD_UPDATED		0x80000000
+
+#define RRS_PACKET_TYPE_802_3  	1
+#define RRS_PACKET_TYPE_ETH	0
+#define RRS_PACKET_IS_ETH(word) \
+	((((word) >> RRS_PACKET_TYPE_SHIFT) & RRS_PACKET_TYPE_MASK) == \
+			RRS_PACKET_TYPE_ETH)
+#define RRS_RXD_IS_VALID(word) \
+	((((word) >> RRS_RXD_UPDATED_SHIFT) & RRS_RXD_UPDATED_MASK) == 1)
+
+#define RRS_PACKET_PROT_IS_IPV4_ONLY(word) \
+	((((word) >> RRS_PROT_ID_SHIFT) & RRS_PROT_ID_MASK) == 1)
+#define RRS_PACKET_PROT_IS_IPV6_ONLY(word) \
+	((((word) >> RRS_PROT_ID_SHIFT) & RRS_PROT_ID_MASK) == 6)
+
+#define RRS_MT_PROT_ID_TCPUDP	BIT(19)
+
+struct atl1c_recv_ret_status {
+	__le32  word0;
+	__le32	rss_hash;
+	__le16	vlan_tag;
+	__le16	flag;
+	__le32	word3;
+};
+
+/* RFD descriptor */
+struct atl1c_rx_free_desc {
+	__le64	buffer_addr;
+};
+
+/* DMA Order Settings */
+enum atl1c_dma_order {
+	atl1c_dma_ord_in = 1,
+	atl1c_dma_ord_enh = 2,
+	atl1c_dma_ord_out = 4
+};
+
+enum atl1c_dma_rcb {
+	atl1c_rcb_64 = 0,
+	atl1c_rcb_128 = 1
+};
+
+enum atl1c_mac_speed {
+	atl1c_mac_speed_0 = 0,
+	atl1c_mac_speed_10_100 = 1,
+	atl1c_mac_speed_1000 = 2
+};
+
+enum atl1c_dma_req_block {
+	atl1c_dma_req_128 = 0,
+	atl1c_dma_req_256 = 1,
+	atl1c_dma_req_512 = 2,
+	atl1c_dma_req_1024 = 3,
+	atl1c_dma_req_2048 = 4,
+	atl1c_dma_req_4096 = 5
+};
+
+
+enum atl1c_nic_type {
+	athr_l1c = 0,
+	athr_l2c = 1,
+	athr_l2c_b,
+	athr_l2c_b2,
+	athr_l1d,
+	athr_l1d_2,
+	athr_mt,
+};
+
+struct atl1c_hw_stats {
+	/* rx */
+	unsigned long rx_ok;		/* The number of good packet received. */
+	unsigned long rx_bcast;		/* The number of good broadcast packet received. */
+	unsigned long rx_mcast;		/* The number of good multicast packet received. */
+	unsigned long rx_pause;		/* The number of Pause packet received. */
+	unsigned long rx_ctrl;		/* The number of Control packet received other than Pause frame. */
+	unsigned long rx_fcs_err;	/* The number of packets with bad FCS. */
+	unsigned long rx_len_err;	/* The number of packets with mismatch of length field and actual size. */
+	unsigned long rx_byte_cnt;	/* The number of bytes of good packet received. FCS is NOT included. */
+	unsigned long rx_runt;		/* The number of packets received that are less than 64 byte long and with good FCS. */
+	unsigned long rx_frag;		/* The number of packets received that are less than 64 byte long and with bad FCS. */
+	unsigned long rx_sz_64;		/* The number of good and bad packets received that are 64 byte long. */
+	unsigned long rx_sz_65_127;	/* The number of good and bad packets received that are between 65 and 127-byte long. */
+	unsigned long rx_sz_128_255;	/* The number of good and bad packets received that are between 128 and 255-byte long. */
+	unsigned long rx_sz_256_511;	/* The number of good and bad packets received that are between 256 and 511-byte long. */
+	unsigned long rx_sz_512_1023;	/* The number of good and bad packets received that are between 512 and 1023-byte long. */
+	unsigned long rx_sz_1024_1518;	/* The number of good and bad packets received that are between 1024 and 1518-byte long. */
+	unsigned long rx_sz_1519_max;	/* The number of good and bad packets received that are between 1519-byte and MTU. */
+	unsigned long rx_sz_ov;		/* The number of good and bad packets received that are more than MTU size truncated by Selene. */
+	unsigned long rx_rxf_ov;	/* The number of frame dropped due to occurrence of RX FIFO overflow. */
+	unsigned long rx_rrd_ov;	/* The number of frame dropped due to occurrence of RRD overflow. */
+	unsigned long rx_align_err;	/* Alignment Error */
+	unsigned long rx_bcast_byte_cnt; /* The byte count of broadcast packet received, excluding FCS. */
+	unsigned long rx_mcast_byte_cnt; /* The byte count of multicast packet received, excluding FCS. */
+	unsigned long rx_err_addr;	/* The number of packets dropped due to address filtering. */
+
+	/* tx */
+	unsigned long tx_ok;		/* The number of good packet transmitted. */
+	unsigned long tx_bcast;		/* The number of good broadcast packet transmitted. */
+	unsigned long tx_mcast;		/* The number of good multicast packet transmitted. */
+	unsigned long tx_pause;		/* The number of Pause packet transmitted. */
+	unsigned long tx_exc_defer;	/* The number of packets transmitted with excessive deferral. */
+	unsigned long tx_ctrl;		/* The number of packets transmitted is a control frame, excluding Pause frame. */
+	unsigned long tx_defer;		/* The number of packets transmitted that is deferred. */
+	unsigned long tx_byte_cnt;	/* The number of bytes of data transmitted. FCS is NOT included. */
+	unsigned long tx_sz_64;		/* The number of good and bad packets transmitted that are 64 byte long. */
+	unsigned long tx_sz_65_127;	/* The number of good and bad packets transmitted that are between 65 and 127-byte long. */
+	unsigned long tx_sz_128_255;	/* The number of good and bad packets transmitted that are between 128 and 255-byte long. */
+	unsigned long tx_sz_256_511;	/* The number of good and bad packets transmitted that are between 256 and 511-byte long. */
+	unsigned long tx_sz_512_1023;	/* The number of good and bad packets transmitted that are between 512 and 1023-byte long. */
+	unsigned long tx_sz_1024_1518;	/* The number of good and bad packets transmitted that are between 1024 and 1518-byte long. */
+	unsigned long tx_sz_1519_max;	/* The number of good and bad packets transmitted that are between 1519-byte and MTU. */
+	unsigned long tx_1_col;		/* The number of packets subsequently transmitted successfully with a single prior collision. */
+	unsigned long tx_2_col;		/* The number of packets subsequently transmitted successfully with multiple prior collisions. */
+	unsigned long tx_late_col;	/* The number of packets transmitted with late collisions. */
+	unsigned long tx_abort_col;	/* The number of transmit packets aborted due to excessive collisions. */
+	unsigned long tx_underrun;	/* The number of transmit packets aborted due to transmit FIFO underrun, or TRD FIFO underrun */
+	unsigned long tx_rd_eop;	/* The number of times that read beyond the EOP into the next frame area when TRD was not written timely */
+	unsigned long tx_len_err;	/* The number of transmit packets with length field does NOT match the actual frame size. */
+	unsigned long tx_trunc;		/* The number of transmit packets truncated due to size exceeding MTU. */
+	unsigned long tx_bcast_byte;	/* The byte count of broadcast packet transmitted, excluding FCS. */
+	unsigned long tx_mcast_byte;	/* The byte count of multicast packet transmitted, excluding FCS. */
+};
+
+struct atl1c_hw {
+	u8 __iomem      *hw_addr;            /* inner register address */
+	struct atl1c_adapter *adapter;
+	enum atl1c_nic_type  nic_type;
+	enum atl1c_dma_order dma_order;
+	enum atl1c_dma_rcb   rcb_value;
+	enum atl1c_dma_req_block dmar_block;
+
+	u16 device_id;
+	u16 vendor_id;
+	u16 subsystem_id;
+	u16 subsystem_vendor_id;
+	u8 revision_id;
+	u16 phy_id1;
+	u16 phy_id2;
+
+	spinlock_t intr_mask_lock;	/* protect the intr_mask */
+	u32 intr_mask;
+
+	u8 preamble_len;
+	u16 max_frame_size;
+	u16 min_frame_size;
+
+	enum atl1c_mac_speed mac_speed;
+	bool mac_duplex;
+	bool hibernate;
+	u16 media_type;
+#define MEDIA_TYPE_AUTO_SENSOR  0
+#define MEDIA_TYPE_100M_FULL    1
+#define MEDIA_TYPE_100M_HALF    2
+#define MEDIA_TYPE_10M_FULL     3
+#define MEDIA_TYPE_10M_HALF     4
+
+	u16 autoneg_advertised;
+	u16 mii_autoneg_adv_reg;
+	u16 mii_1000t_ctrl_reg;
+
+	u16 tx_imt;	/* TX Interrupt Moderator timer ( 2us resolution) */
+	u16 rx_imt;	/* RX Interrupt Moderator timer ( 2us resolution) */
+	u16 ict;        /* Interrupt Clear timer (2us resolution) */
+	u16 ctrl_flags;
+#define ATL1C_INTR_CLEAR_ON_READ	0x0001
+#define ATL1C_INTR_MODRT_ENABLE	 	0x0002
+#define ATL1C_CMB_ENABLE		0x0004
+#define ATL1C_SMB_ENABLE		0x0010
+#define ATL1C_TXQ_MODE_ENHANCE		0x0020
+#define ATL1C_RX_IPV6_CHKSUM		0x0040
+#define ATL1C_ASPM_L0S_SUPPORT		0x0080
+#define ATL1C_ASPM_L1_SUPPORT		0x0100
+#define ATL1C_ASPM_CTRL_MON		0x0200
+#define ATL1C_HIB_DISABLE		0x0400
+#define ATL1C_APS_MODE_ENABLE           0x0800
+#define ATL1C_LINK_EXT_SYNC             0x1000
+#define ATL1C_CLK_GATING_EN             0x2000
+#define ATL1C_FPGA_VERSION              0x8000
+	u16 link_cap_flags;
+#define ATL1C_LINK_CAP_1000M		0x0001
+	u32 smb_timer;
+
+	u16 rrd_thresh; /* Threshold of number of RRD produced to trigger
+			  interrupt request */
+	u16 tpd_thresh;
+	u8 tpd_burst;   /* Number of TPD to prefetch in cache-aligned burst. */
+	u8 rfd_burst;
+	u32 base_cpu;
+	u32 indirect_tab;
+	u8 mac_addr[ETH_ALEN];
+	u8 perm_mac_addr[ETH_ALEN];
+
+	bool phy_configured;
+	bool re_autoneg;
+	bool emi_ca;
+	bool msi_lnkpatch;	/* link patch for specific platforms */
+};
+
+/*
+ * atl1c_ring_header represents a single, contiguous block of DMA space
+ * mapped for the three descriptor rings (tpd, rfd, rrd) described below
+ */
+struct atl1c_ring_header {
+	void *desc;		/* virtual address */
+	dma_addr_t dma;		/* physical address*/
+	unsigned int size;	/* length in bytes */
+};
+
+/*
+ * atl1c_buffer is wrapper around a pointer to a socket buffer
+ * so a DMA handle can be stored along with the skb
+ */
+struct atl1c_buffer {
+	struct sk_buff *skb;	/* socket buffer */
+	u16 length;		/* rx buffer length */
+	u16 flags;		/* information of buffer */
+#define ATL1C_BUFFER_FREE		0x0001
+#define ATL1C_BUFFER_BUSY		0x0002
+#define ATL1C_BUFFER_STATE_MASK		0x0003
+
+#define ATL1C_PCIMAP_SINGLE		0x0004
+#define ATL1C_PCIMAP_PAGE		0x0008
+#define ATL1C_PCIMAP_TYPE_MASK		0x000C
+
+#define ATL1C_PCIMAP_TODEVICE		0x0010
+#define ATL1C_PCIMAP_FROMDEVICE		0x0020
+#define ATL1C_PCIMAP_DIRECTION_MASK	0x0030
+	dma_addr_t dma;
+};
+
+#define ATL1C_SET_BUFFER_STATE(buff, state) do {	\
+	((buff)->flags) &= ~ATL1C_BUFFER_STATE_MASK;	\
+	((buff)->flags) |= (state);			\
+	} while (0)
+
+#define ATL1C_SET_PCIMAP_TYPE(buff, type, direction) do {	\
+	((buff)->flags) &= ~ATL1C_PCIMAP_TYPE_MASK;		\
+	((buff)->flags) |= (type);				\
+	((buff)->flags) &= ~ATL1C_PCIMAP_DIRECTION_MASK;	\
+	((buff)->flags) |= (direction);				\
+	} while (0)
+
+/* transimit packet descriptor (tpd) ring */
+struct atl1c_tpd_ring {
+	struct atl1c_adapter *adapter;
+	void *desc;		/* descriptor ring virtual address */
+	dma_addr_t dma;		/* descriptor ring physical address */
+	u16 num;
+	u16 size;		/* descriptor ring length in bytes */
+	u16 count;		/* number of descriptors in the ring */
+	u16 next_to_use;
+	atomic_t next_to_clean;
+	struct atl1c_buffer *buffer_info;
+	struct napi_struct napi;
+};
+
+/* receive free descriptor (rfd) ring */
+struct atl1c_rfd_ring {
+	void *desc;		/* descriptor ring virtual address */
+	dma_addr_t dma;		/* descriptor ring physical address */
+	u16 size;		/* descriptor ring length in bytes */
+	u16 count;		/* number of descriptors in the ring */
+	u16 next_to_use;
+	u16 next_to_clean;
+	struct atl1c_buffer *buffer_info;
+};
+
+/* receive return descriptor (rrd) ring */
+struct atl1c_rrd_ring {
+	struct atl1c_adapter *adapter;
+	void *desc;		/* descriptor ring virtual address */
+	dma_addr_t dma;		/* descriptor ring physical address */
+	u16 num;
+	u16 size;		/* descriptor ring length in bytes */
+	u16 count;		/* number of descriptors in the ring */
+	u16 next_to_use;
+	u16 next_to_clean;
+	struct napi_struct napi;
+};
+
+/* board specific private data structure */
+struct atl1c_adapter {
+	struct net_device   *netdev;
+	struct pci_dev      *pdev;
+	struct atl1c_hw        hw;
+	struct atl1c_hw_stats  hw_stats;
+	struct mii_if_info  mii;    /* MII interface info */
+	u16 rx_buffer_len;
+	unsigned int tx_queue_count;
+	unsigned int rx_queue_count;
+
+	unsigned long flags;
+#define __AT_TESTING        0x0001
+#define __AT_RESETTING      0x0002
+#define __AT_DOWN           0x0003
+	unsigned long work_event;
+#define	ATL1C_WORK_EVENT_RESET		0
+#define	ATL1C_WORK_EVENT_LINK_CHANGE	1
+	u32 msg_enable;
+
+	bool have_msi;
+	u32 wol;
+	u16 link_speed;
+	u16 link_duplex;
+
+	spinlock_t mdio_lock;
+	atomic_t irq_sem;
+
+	struct work_struct common_task;
+	struct timer_list watchdog_timer;
+	struct timer_list phy_config_timer;
+
+	/* All Descriptor memory */
+	struct atl1c_ring_header ring_header;
+	struct atl1c_tpd_ring tpd_ring[AT_MAX_TRANSMIT_QUEUE];
+	struct atl1c_rfd_ring rfd_ring[AT_MAX_RECEIVE_QUEUE];
+	struct atl1c_rrd_ring rrd_ring[AT_MAX_RECEIVE_QUEUE];
+	u32 bd_number;     /* board number;*/
+};
+
+#define AT_WRITE_REG(a, reg, value) ( \
+		writel((value), ((a)->hw_addr + reg)))
+
+#define AT_WRITE_FLUSH(a) (\
+		readl((a)->hw_addr))
+
+#define AT_READ_REG(a, reg, pdata) do {					\
+		if (unlikely((a)->hibernate)) {				\
+			readl((a)->hw_addr + reg);			\
+			*(u32 *)pdata = readl((a)->hw_addr + reg);	\
+		} else {						\
+			*(u32 *)pdata = readl((a)->hw_addr + reg);	\
+		}							\
+	} while (0)
+
+#define AT_WRITE_REGB(a, reg, value) (\
+		writeb((value), ((a)->hw_addr + reg)))
+
+#define AT_READ_REGB(a, reg) (\
+		readb((a)->hw_addr + reg))
+
+#define AT_WRITE_REGW(a, reg, value) (\
+		writew((value), ((a)->hw_addr + reg)))
+
+#define AT_READ_REGW(a, reg, pdata) do {				\
+		if (unlikely((a)->hibernate)) {				\
+			readw((a)->hw_addr + reg);			\
+			*(u16 *)pdata = readw((a)->hw_addr + reg);	\
+		} else {						\
+			*(u16 *)pdata = readw((a)->hw_addr + reg);	\
+		}							\
+	} while (0)
+
+#define AT_WRITE_REG_ARRAY(a, reg, offset, value) ( \
+		writel((value), (((a)->hw_addr + reg) + ((offset) << 2))))
+
+#define AT_READ_REG_ARRAY(a, reg, offset) ( \
+		readl(((a)->hw_addr + reg) + ((offset) << 2)))
+
+extern char atl1c_driver_name[];
+
+void atl1c_reinit_locked(struct atl1c_adapter *adapter);
+s32 atl1c_reset_hw(struct atl1c_hw *hw);
+void atl1c_set_ethtool_ops(struct net_device *netdev);
+#endif /* _ATL1C_H_ */
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_ethtool.c b/drivers/net/ethernet/atheros/atl1c/atl1c_ethtool.c
new file mode 100644
index 000000000..0bce122c6
--- /dev/null
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_ethtool.c
@@ -0,0 +1,295 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright(c) 2009 - 2009 Atheros Corporation. All rights reserved.
+ *
+ * Derived from Intel e1000 driver
+ * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/ethtool.h>
+#include <linux/slab.h>
+
+#include "atl1c.h"
+
+static int atl1c_get_link_ksettings(struct net_device *netdev,
+				    struct ethtool_link_ksettings *cmd)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct atl1c_hw *hw = &adapter->hw;
+	u32 supported, advertising;
+
+	supported = (SUPPORTED_10baseT_Half  |
+			   SUPPORTED_10baseT_Full  |
+			   SUPPORTED_100baseT_Half |
+			   SUPPORTED_100baseT_Full |
+			   SUPPORTED_Autoneg       |
+			   SUPPORTED_TP);
+	if (hw->link_cap_flags & ATL1C_LINK_CAP_1000M)
+		supported |= SUPPORTED_1000baseT_Full;
+
+	advertising = ADVERTISED_TP;
+
+	advertising |= hw->autoneg_advertised;
+
+	cmd->base.port = PORT_TP;
+	cmd->base.phy_address = 0;
+
+	if (adapter->link_speed != SPEED_0) {
+		cmd->base.speed = adapter->link_speed;
+		if (adapter->link_duplex == FULL_DUPLEX)
+			cmd->base.duplex = DUPLEX_FULL;
+		else
+			cmd->base.duplex = DUPLEX_HALF;
+	} else {
+		cmd->base.speed = SPEED_UNKNOWN;
+		cmd->base.duplex = DUPLEX_UNKNOWN;
+	}
+
+	cmd->base.autoneg = AUTONEG_ENABLE;
+
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
+						supported);
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
+						advertising);
+
+	return 0;
+}
+
+static int atl1c_set_link_ksettings(struct net_device *netdev,
+				    const struct ethtool_link_ksettings *cmd)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct atl1c_hw *hw = &adapter->hw;
+	u16  autoneg_advertised;
+
+	while (test_and_set_bit(__AT_RESETTING, &adapter->flags))
+		msleep(1);
+
+	if (cmd->base.autoneg == AUTONEG_ENABLE) {
+		autoneg_advertised = ADVERTISED_Autoneg;
+	} else {
+		u32 speed = cmd->base.speed;
+		if (speed == SPEED_1000) {
+			if (cmd->base.duplex != DUPLEX_FULL) {
+				if (netif_msg_link(adapter))
+					dev_warn(&adapter->pdev->dev,
+						"1000M half is invalid\n");
+				clear_bit(__AT_RESETTING, &adapter->flags);
+				return -EINVAL;
+			}
+			autoneg_advertised = ADVERTISED_1000baseT_Full;
+		} else if (speed == SPEED_100) {
+			if (cmd->base.duplex == DUPLEX_FULL)
+				autoneg_advertised = ADVERTISED_100baseT_Full;
+			else
+				autoneg_advertised = ADVERTISED_100baseT_Half;
+		} else {
+			if (cmd->base.duplex == DUPLEX_FULL)
+				autoneg_advertised = ADVERTISED_10baseT_Full;
+			else
+				autoneg_advertised = ADVERTISED_10baseT_Half;
+		}
+	}
+
+	if (hw->autoneg_advertised != autoneg_advertised) {
+		hw->autoneg_advertised = autoneg_advertised;
+		if (atl1c_restart_autoneg(hw) != 0) {
+			if (netif_msg_link(adapter))
+				dev_warn(&adapter->pdev->dev,
+					"ethtool speed/duplex setting failed\n");
+			clear_bit(__AT_RESETTING, &adapter->flags);
+			return -EINVAL;
+		}
+	}
+	clear_bit(__AT_RESETTING, &adapter->flags);
+	return 0;
+}
+
+static u32 atl1c_get_msglevel(struct net_device *netdev)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	return adapter->msg_enable;
+}
+
+static void atl1c_set_msglevel(struct net_device *netdev, u32 data)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	adapter->msg_enable = data;
+}
+
+static int atl1c_get_regs_len(struct net_device *netdev)
+{
+	return AT_REGS_LEN;
+}
+
+static void atl1c_get_regs(struct net_device *netdev,
+			   struct ethtool_regs *regs, void *p)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct atl1c_hw *hw = &adapter->hw;
+	u32 *regs_buff = p;
+	u16 phy_data;
+
+	memset(p, 0, AT_REGS_LEN);
+
+	regs->version = 1;
+	AT_READ_REG(hw, REG_PM_CTRL, 		  p++);
+	AT_READ_REG(hw, REG_MAC_HALF_DUPLX_CTRL,  p++);
+	AT_READ_REG(hw, REG_TWSI_CTRL, 		  p++);
+	AT_READ_REG(hw, REG_PCIE_DEV_MISC_CTRL,   p++);
+	AT_READ_REG(hw, REG_MASTER_CTRL, 	  p++);
+	AT_READ_REG(hw, REG_MANUAL_TIMER_INIT,    p++);
+	AT_READ_REG(hw, REG_IRQ_MODRT_TIMER_INIT, p++);
+	AT_READ_REG(hw, REG_GPHY_CTRL, 		  p++);
+	AT_READ_REG(hw, REG_LINK_CTRL, 		  p++);
+	AT_READ_REG(hw, REG_IDLE_STATUS, 	  p++);
+	AT_READ_REG(hw, REG_MDIO_CTRL, 		  p++);
+	AT_READ_REG(hw, REG_SERDES,		  p++);
+	AT_READ_REG(hw, REG_MAC_CTRL, 		  p++);
+	AT_READ_REG(hw, REG_MAC_IPG_IFG, 	  p++);
+	AT_READ_REG(hw, REG_MAC_STA_ADDR, 	  p++);
+	AT_READ_REG(hw, REG_MAC_STA_ADDR+4, 	  p++);
+	AT_READ_REG(hw, REG_RX_HASH_TABLE, 	  p++);
+	AT_READ_REG(hw, REG_RX_HASH_TABLE+4, 	  p++);
+	AT_READ_REG(hw, REG_RXQ_CTRL, 		  p++);
+	AT_READ_REG(hw, REG_TXQ_CTRL, 		  p++);
+	AT_READ_REG(hw, REG_MTU, 		  p++);
+	AT_READ_REG(hw, REG_WOL_CTRL, 		  p++);
+
+	atl1c_read_phy_reg(hw, MII_BMCR, &phy_data);
+	regs_buff[AT_REGS_LEN/sizeof(u32) - 2] = (u32) phy_data;
+	atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
+	regs_buff[AT_REGS_LEN/sizeof(u32) - 1] = (u32) phy_data;
+}
+
+static int atl1c_get_eeprom_len(struct net_device *netdev)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	if (atl1c_check_eeprom_exist(&adapter->hw))
+		return AT_EEPROM_LEN;
+	else
+		return 0;
+}
+
+static int atl1c_get_eeprom(struct net_device *netdev,
+		struct ethtool_eeprom *eeprom, u8 *bytes)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct atl1c_hw *hw = &adapter->hw;
+	u32 *eeprom_buff;
+	int first_dword, last_dword;
+	int ret_val = 0;
+	int i;
+
+	if (eeprom->len == 0)
+		return -EINVAL;
+
+	if (!atl1c_check_eeprom_exist(hw)) /* not exist */
+		return -EINVAL;
+
+	eeprom->magic = adapter->pdev->vendor |
+			(adapter->pdev->device << 16);
+
+	first_dword = eeprom->offset >> 2;
+	last_dword = (eeprom->offset + eeprom->len - 1) >> 2;
+
+	eeprom_buff = kmalloc_array(last_dword - first_dword + 1, sizeof(u32),
+				    GFP_KERNEL);
+	if (eeprom_buff == NULL)
+		return -ENOMEM;
+
+	for (i = first_dword; i < last_dword; i++) {
+		if (!atl1c_read_eeprom(hw, i * 4, &(eeprom_buff[i-first_dword]))) {
+			kfree(eeprom_buff);
+			return -EIO;
+		}
+	}
+
+	memcpy(bytes, (u8 *)eeprom_buff + (eeprom->offset & 3),
+			eeprom->len);
+	kfree(eeprom_buff);
+
+	return ret_val;
+	return 0;
+}
+
+static void atl1c_get_drvinfo(struct net_device *netdev,
+		struct ethtool_drvinfo *drvinfo)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	strscpy(drvinfo->driver,  atl1c_driver_name, sizeof(drvinfo->driver));
+	strscpy(drvinfo->bus_info, pci_name(adapter->pdev),
+		sizeof(drvinfo->bus_info));
+}
+
+static void atl1c_get_wol(struct net_device *netdev,
+			  struct ethtool_wolinfo *wol)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	wol->supported = WAKE_MAGIC | WAKE_PHY;
+	wol->wolopts = 0;
+
+	if (adapter->wol & AT_WUFC_EX)
+		wol->wolopts |= WAKE_UCAST;
+	if (adapter->wol & AT_WUFC_MC)
+		wol->wolopts |= WAKE_MCAST;
+	if (adapter->wol & AT_WUFC_BC)
+		wol->wolopts |= WAKE_BCAST;
+	if (adapter->wol & AT_WUFC_MAG)
+		wol->wolopts |= WAKE_MAGIC;
+	if (adapter->wol & AT_WUFC_LNKC)
+		wol->wolopts |= WAKE_PHY;
+}
+
+static int atl1c_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	if (wol->wolopts & (WAKE_ARP | WAKE_MAGICSECURE |
+			    WAKE_UCAST | WAKE_BCAST | WAKE_MCAST))
+		return -EOPNOTSUPP;
+	/* these settings will always override what we currently have */
+	adapter->wol = 0;
+
+	if (wol->wolopts & WAKE_MAGIC)
+		adapter->wol |= AT_WUFC_MAG;
+	if (wol->wolopts & WAKE_PHY)
+		adapter->wol |= AT_WUFC_LNKC;
+
+	device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
+
+	return 0;
+}
+
+static int atl1c_nway_reset(struct net_device *netdev)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	if (netif_running(netdev))
+		atl1c_reinit_locked(adapter);
+	return 0;
+}
+
+static const struct ethtool_ops atl1c_ethtool_ops = {
+	.get_drvinfo            = atl1c_get_drvinfo,
+	.get_regs_len           = atl1c_get_regs_len,
+	.get_regs               = atl1c_get_regs,
+	.get_wol                = atl1c_get_wol,
+	.set_wol                = atl1c_set_wol,
+	.get_msglevel           = atl1c_get_msglevel,
+	.set_msglevel           = atl1c_set_msglevel,
+	.nway_reset             = atl1c_nway_reset,
+	.get_link               = ethtool_op_get_link,
+	.get_eeprom_len         = atl1c_get_eeprom_len,
+	.get_eeprom             = atl1c_get_eeprom,
+	.get_link_ksettings     = atl1c_get_link_ksettings,
+	.set_link_ksettings     = atl1c_set_link_ksettings,
+};
+
+void atl1c_set_ethtool_ops(struct net_device *netdev)
+{
+	netdev->ethtool_ops = &atl1c_ethtool_ops;
+}
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.c b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.c
new file mode 100644
index 000000000..f19370c33
--- /dev/null
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.c
@@ -0,0 +1,876 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright(c) 2007 Atheros Corporation. All rights reserved.
+ *
+ * Derived from Intel e1000 driver
+ * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
+ */
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/mii.h>
+#include <linux/crc32.h>
+
+#include "atl1c.h"
+
+/*
+ * check_eeprom_exist
+ * return 1 if eeprom exist
+ */
+int atl1c_check_eeprom_exist(struct atl1c_hw *hw)
+{
+	u32 data;
+
+	AT_READ_REG(hw, REG_TWSI_DEBUG, &data);
+	if (data & TWSI_DEBUG_DEV_EXIST)
+		return 1;
+
+	AT_READ_REG(hw, REG_MASTER_CTRL, &data);
+	if (data & MASTER_CTRL_OTP_SEL)
+		return 1;
+	return 0;
+}
+
+void atl1c_hw_set_mac_addr(struct atl1c_hw *hw, u8 *mac_addr)
+{
+	u32 value;
+	/*
+	 * 00-0B-6A-F6-00-DC
+	 * 0:  6AF600DC 1: 000B
+	 * low dword
+	 */
+	value = mac_addr[2] << 24 |
+		mac_addr[3] << 16 |
+		mac_addr[4] << 8  |
+		mac_addr[5];
+	AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 0, value);
+	/* hight dword */
+	value = mac_addr[0] << 8 |
+		mac_addr[1];
+	AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 1, value);
+}
+
+/* read mac address from hardware register */
+static bool atl1c_read_current_addr(struct atl1c_hw *hw, u8 *eth_addr)
+{
+	u32 addr[2];
+
+	AT_READ_REG(hw, REG_MAC_STA_ADDR, &addr[0]);
+	AT_READ_REG(hw, REG_MAC_STA_ADDR + 4, &addr[1]);
+
+	*(u32 *) &eth_addr[2] = htonl(addr[0]);
+	*(u16 *) &eth_addr[0] = htons((u16)addr[1]);
+
+	return is_valid_ether_addr(eth_addr);
+}
+
+/*
+ * atl1c_get_permanent_address
+ * return 0 if get valid mac address,
+ */
+static int atl1c_get_permanent_address(struct atl1c_hw *hw)
+{
+	u32 i;
+	u32 otp_ctrl_data;
+	u32 twsi_ctrl_data;
+	u16 phy_data;
+	bool raise_vol = false;
+
+	/* MAC-address from BIOS is the 1st priority */
+	if (atl1c_read_current_addr(hw, hw->perm_mac_addr))
+		return 0;
+
+	/* init */
+	AT_READ_REG(hw, REG_OTP_CTRL, &otp_ctrl_data);
+	if (atl1c_check_eeprom_exist(hw)) {
+		if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c) {
+			/* Enable OTP CLK */
+			if (!(otp_ctrl_data & OTP_CTRL_CLK_EN)) {
+				otp_ctrl_data |= OTP_CTRL_CLK_EN;
+				AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
+				AT_WRITE_FLUSH(hw);
+				msleep(1);
+			}
+		}
+		/* raise voltage temporally for l2cb */
+		if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) {
+			atl1c_read_phy_dbg(hw, MIIDBG_ANACTRL, &phy_data);
+			phy_data &= ~ANACTRL_HB_EN;
+			atl1c_write_phy_dbg(hw, MIIDBG_ANACTRL, phy_data);
+			atl1c_read_phy_dbg(hw, MIIDBG_VOLT_CTRL, &phy_data);
+			phy_data |= VOLT_CTRL_SWLOWEST;
+			atl1c_write_phy_dbg(hw, MIIDBG_VOLT_CTRL, phy_data);
+			udelay(20);
+			raise_vol = true;
+		}
+
+		AT_READ_REG(hw, REG_TWSI_CTRL, &twsi_ctrl_data);
+		twsi_ctrl_data |= TWSI_CTRL_SW_LDSTART;
+		AT_WRITE_REG(hw, REG_TWSI_CTRL, twsi_ctrl_data);
+		for (i = 0; i < AT_TWSI_EEPROM_TIMEOUT; i++) {
+			msleep(10);
+			AT_READ_REG(hw, REG_TWSI_CTRL, &twsi_ctrl_data);
+			if ((twsi_ctrl_data & TWSI_CTRL_SW_LDSTART) == 0)
+				break;
+		}
+		if (i >= AT_TWSI_EEPROM_TIMEOUT)
+			return -1;
+	}
+	/* Disable OTP_CLK */
+	if ((hw->nic_type == athr_l1c || hw->nic_type == athr_l2c)) {
+		otp_ctrl_data &= ~OTP_CTRL_CLK_EN;
+		AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
+		msleep(1);
+	}
+	if (raise_vol) {
+		atl1c_read_phy_dbg(hw, MIIDBG_ANACTRL, &phy_data);
+		phy_data |= ANACTRL_HB_EN;
+		atl1c_write_phy_dbg(hw, MIIDBG_ANACTRL, phy_data);
+		atl1c_read_phy_dbg(hw, MIIDBG_VOLT_CTRL, &phy_data);
+		phy_data &= ~VOLT_CTRL_SWLOWEST;
+		atl1c_write_phy_dbg(hw, MIIDBG_VOLT_CTRL, phy_data);
+		udelay(20);
+	}
+
+	if (atl1c_read_current_addr(hw, hw->perm_mac_addr))
+		return 0;
+
+	return -1;
+}
+
+bool atl1c_read_eeprom(struct atl1c_hw *hw, u32 offset, u32 *p_value)
+{
+	int i;
+	bool ret = false;
+	u32 otp_ctrl_data;
+	u32 control;
+	u32 data;
+
+	if (offset & 3)
+		return ret; /* address do not align */
+
+	AT_READ_REG(hw, REG_OTP_CTRL, &otp_ctrl_data);
+	if (!(otp_ctrl_data & OTP_CTRL_CLK_EN))
+		AT_WRITE_REG(hw, REG_OTP_CTRL,
+				(otp_ctrl_data | OTP_CTRL_CLK_EN));
+
+	AT_WRITE_REG(hw, REG_EEPROM_DATA_LO, 0);
+	control = (offset & EEPROM_CTRL_ADDR_MASK) << EEPROM_CTRL_ADDR_SHIFT;
+	AT_WRITE_REG(hw, REG_EEPROM_CTRL, control);
+
+	for (i = 0; i < 10; i++) {
+		udelay(100);
+		AT_READ_REG(hw, REG_EEPROM_CTRL, &control);
+		if (control & EEPROM_CTRL_RW)
+			break;
+	}
+	if (control & EEPROM_CTRL_RW) {
+		AT_READ_REG(hw, REG_EEPROM_CTRL, &data);
+		AT_READ_REG(hw, REG_EEPROM_DATA_LO, p_value);
+		data = data & 0xFFFF;
+		*p_value = swab32((data << 16) | (*p_value >> 16));
+		ret = true;
+	}
+	if (!(otp_ctrl_data & OTP_CTRL_CLK_EN))
+		AT_WRITE_REG(hw, REG_OTP_CTRL, otp_ctrl_data);
+
+	return ret;
+}
+/*
+ * Reads the adapter's MAC address from the EEPROM
+ *
+ * hw - Struct containing variables accessed by shared code
+ */
+int atl1c_read_mac_addr(struct atl1c_hw *hw)
+{
+	int err = 0;
+
+	err = atl1c_get_permanent_address(hw);
+	if (err)
+		eth_random_addr(hw->perm_mac_addr);
+
+	memcpy(hw->mac_addr, hw->perm_mac_addr, sizeof(hw->perm_mac_addr));
+	return err;
+}
+
+/*
+ * atl1c_hash_mc_addr
+ *  purpose
+ *      set hash value for a multicast address
+ *      hash calcu processing :
+ *          1. calcu 32bit CRC for multicast address
+ *          2. reverse crc with MSB to LSB
+ */
+u32 atl1c_hash_mc_addr(struct atl1c_hw *hw, u8 *mc_addr)
+{
+	u32 crc32;
+	u32 value = 0;
+	int i;
+
+	crc32 = ether_crc_le(6, mc_addr);
+	for (i = 0; i < 32; i++)
+		value |= (((crc32 >> i) & 1) << (31 - i));
+
+	return value;
+}
+
+/*
+ * Sets the bit in the multicast table corresponding to the hash value.
+ * hw - Struct containing variables accessed by shared code
+ * hash_value - Multicast address hash value
+ */
+void atl1c_hash_set(struct atl1c_hw *hw, u32 hash_value)
+{
+	u32 hash_bit, hash_reg;
+	u32 mta;
+
+	/*
+	 * The HASH Table  is a register array of 2 32-bit registers.
+	 * It is treated like an array of 64 bits.  We want to set
+	 * bit BitArray[hash_value]. So we figure out what register
+	 * the bit is in, read it, OR in the new bit, then write
+	 * back the new value.  The register is determined by the
+	 * upper bit of the hash value and the bit within that
+	 * register are determined by the lower 5 bits of the value.
+	 */
+	hash_reg = (hash_value >> 31) & 0x1;
+	hash_bit = (hash_value >> 26) & 0x1F;
+
+	mta = AT_READ_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg);
+
+	mta |= (1 << hash_bit);
+
+	AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg, mta);
+}
+
+/*
+ * wait mdio module be idle
+ * return true: idle
+ *        false: still busy
+ */
+bool atl1c_wait_mdio_idle(struct atl1c_hw *hw)
+{
+	u32 val;
+	int i;
+
+	for (i = 0; i < MDIO_MAX_AC_TO; i++) {
+		AT_READ_REG(hw, REG_MDIO_CTRL, &val);
+		if (!(val & (MDIO_CTRL_BUSY | MDIO_CTRL_START)))
+			break;
+		udelay(10);
+	}
+
+	return i != MDIO_MAX_AC_TO;
+}
+
+void atl1c_stop_phy_polling(struct atl1c_hw *hw)
+{
+	if (!(hw->ctrl_flags & ATL1C_FPGA_VERSION))
+		return;
+
+	AT_WRITE_REG(hw, REG_MDIO_CTRL, 0);
+	atl1c_wait_mdio_idle(hw);
+}
+
+void atl1c_start_phy_polling(struct atl1c_hw *hw, u16 clk_sel)
+{
+	u32 val;
+
+	if (!(hw->ctrl_flags & ATL1C_FPGA_VERSION))
+		return;
+
+	val = MDIO_CTRL_SPRES_PRMBL |
+		FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
+		FIELDX(MDIO_CTRL_REG, 1) |
+		MDIO_CTRL_START |
+		MDIO_CTRL_OP_READ;
+	AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
+	atl1c_wait_mdio_idle(hw);
+	val |= MDIO_CTRL_AP_EN;
+	val &= ~MDIO_CTRL_START;
+	AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
+	udelay(30);
+}
+
+
+/*
+ * atl1c_read_phy_core
+ * core function to read register in PHY via MDIO control register.
+ * ext: extension register (see IEEE 802.3)
+ * dev: device address (see IEEE 802.3 DEVAD, PRTAD is fixed to 0)
+ * reg: reg to read
+ */
+int atl1c_read_phy_core(struct atl1c_hw *hw, bool ext, u8 dev,
+			u16 reg, u16 *phy_data)
+{
+	u32 val;
+	u16 clk_sel = MDIO_CTRL_CLK_25_4;
+
+	atl1c_stop_phy_polling(hw);
+
+	*phy_data = 0;
+
+	/* only l2c_b2 & l1d_2 could use slow clock */
+	if ((hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) &&
+		hw->hibernate)
+		clk_sel = MDIO_CTRL_CLK_25_128;
+	if (ext) {
+		val = FIELDX(MDIO_EXTN_DEVAD, dev) | FIELDX(MDIO_EXTN_REG, reg);
+		AT_WRITE_REG(hw, REG_MDIO_EXTN, val);
+		val = MDIO_CTRL_SPRES_PRMBL |
+			FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
+			MDIO_CTRL_START |
+			MDIO_CTRL_MODE_EXT |
+			MDIO_CTRL_OP_READ;
+	} else {
+		val = MDIO_CTRL_SPRES_PRMBL |
+			FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
+			FIELDX(MDIO_CTRL_REG, reg) |
+			MDIO_CTRL_START |
+			MDIO_CTRL_OP_READ;
+	}
+	AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
+
+	if (!atl1c_wait_mdio_idle(hw))
+		return -1;
+
+	AT_READ_REG(hw, REG_MDIO_CTRL, &val);
+	*phy_data = (u16)FIELD_GETX(val, MDIO_CTRL_DATA);
+
+	atl1c_start_phy_polling(hw, clk_sel);
+
+	return 0;
+}
+
+/*
+ * atl1c_write_phy_core
+ * core function to write to register in PHY via MDIO control register.
+ * ext: extension register (see IEEE 802.3)
+ * dev: device address (see IEEE 802.3 DEVAD, PRTAD is fixed to 0)
+ * reg: reg to write
+ */
+int atl1c_write_phy_core(struct atl1c_hw *hw, bool ext, u8 dev,
+			u16 reg, u16 phy_data)
+{
+	u32 val;
+	u16 clk_sel = MDIO_CTRL_CLK_25_4;
+
+	atl1c_stop_phy_polling(hw);
+
+
+	/* only l2c_b2 & l1d_2 could use slow clock */
+	if ((hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) &&
+		hw->hibernate)
+		clk_sel = MDIO_CTRL_CLK_25_128;
+
+	if (ext) {
+		val = FIELDX(MDIO_EXTN_DEVAD, dev) | FIELDX(MDIO_EXTN_REG, reg);
+		AT_WRITE_REG(hw, REG_MDIO_EXTN, val);
+		val = MDIO_CTRL_SPRES_PRMBL |
+			FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
+			FIELDX(MDIO_CTRL_DATA, phy_data) |
+			MDIO_CTRL_START |
+			MDIO_CTRL_MODE_EXT;
+	} else {
+		val = MDIO_CTRL_SPRES_PRMBL |
+			FIELDX(MDIO_CTRL_CLK_SEL, clk_sel) |
+			FIELDX(MDIO_CTRL_DATA, phy_data) |
+			FIELDX(MDIO_CTRL_REG, reg) |
+			MDIO_CTRL_START;
+	}
+	AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
+
+	if (!atl1c_wait_mdio_idle(hw))
+		return -1;
+
+	atl1c_start_phy_polling(hw, clk_sel);
+
+	return 0;
+}
+
+/*
+ * Reads the value from a PHY register
+ * hw - Struct containing variables accessed by shared code
+ * reg_addr - address of the PHY register to read
+ */
+int atl1c_read_phy_reg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data)
+{
+	return atl1c_read_phy_core(hw, false, 0, reg_addr, phy_data);
+}
+
+/*
+ * Writes a value to a PHY register
+ * hw - Struct containing variables accessed by shared code
+ * reg_addr - address of the PHY register to write
+ * data - data to write to the PHY
+ */
+int atl1c_write_phy_reg(struct atl1c_hw *hw, u32 reg_addr, u16 phy_data)
+{
+	return atl1c_write_phy_core(hw, false, 0, reg_addr, phy_data);
+}
+
+/* read from PHY extension register */
+int atl1c_read_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
+			u16 reg_addr, u16 *phy_data)
+{
+	return atl1c_read_phy_core(hw, true, dev_addr, reg_addr, phy_data);
+}
+
+/* write to PHY extension register */
+int atl1c_write_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
+			u16 reg_addr, u16 phy_data)
+{
+	return atl1c_write_phy_core(hw, true, dev_addr, reg_addr, phy_data);
+}
+
+int atl1c_read_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data)
+{
+	int err;
+
+	err = atl1c_write_phy_reg(hw, MII_DBG_ADDR, reg_addr);
+	if (unlikely(err))
+		return err;
+	else
+		err = atl1c_read_phy_reg(hw, MII_DBG_DATA, phy_data);
+
+	return err;
+}
+
+int atl1c_write_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 phy_data)
+{
+	int err;
+
+	err = atl1c_write_phy_reg(hw, MII_DBG_ADDR, reg_addr);
+	if (unlikely(err))
+		return err;
+	else
+		err = atl1c_write_phy_reg(hw, MII_DBG_DATA, phy_data);
+
+	return err;
+}
+
+/*
+ * Configures PHY autoneg and flow control advertisement settings
+ *
+ * hw - Struct containing variables accessed by shared code
+ */
+static int atl1c_phy_setup_adv(struct atl1c_hw *hw)
+{
+	u16 mii_adv_data = ADVERTISE_DEFAULT_CAP & ~ADVERTISE_ALL;
+	u16 mii_giga_ctrl_data = GIGA_CR_1000T_DEFAULT_CAP &
+				~GIGA_CR_1000T_SPEED_MASK;
+
+	if (hw->autoneg_advertised & ADVERTISED_10baseT_Half)
+		mii_adv_data |= ADVERTISE_10HALF;
+	if (hw->autoneg_advertised & ADVERTISED_10baseT_Full)
+		mii_adv_data |= ADVERTISE_10FULL;
+	if (hw->autoneg_advertised & ADVERTISED_100baseT_Half)
+		mii_adv_data |= ADVERTISE_100HALF;
+	if (hw->autoneg_advertised & ADVERTISED_100baseT_Full)
+		mii_adv_data |= ADVERTISE_100FULL;
+
+	if (hw->autoneg_advertised & ADVERTISED_Autoneg)
+		mii_adv_data |= ADVERTISE_10HALF  | ADVERTISE_10FULL |
+				ADVERTISE_100HALF | ADVERTISE_100FULL;
+
+	if (hw->link_cap_flags & ATL1C_LINK_CAP_1000M) {
+		if (hw->autoneg_advertised & ADVERTISED_1000baseT_Half)
+			mii_giga_ctrl_data |= ADVERTISE_1000HALF;
+		if (hw->autoneg_advertised & ADVERTISED_1000baseT_Full)
+			mii_giga_ctrl_data |= ADVERTISE_1000FULL;
+		if (hw->autoneg_advertised & ADVERTISED_Autoneg)
+			mii_giga_ctrl_data |= ADVERTISE_1000HALF |
+					ADVERTISE_1000FULL;
+	}
+
+	if (atl1c_write_phy_reg(hw, MII_ADVERTISE, mii_adv_data) != 0 ||
+	    atl1c_write_phy_reg(hw, MII_CTRL1000, mii_giga_ctrl_data) != 0)
+		return -1;
+	return 0;
+}
+
+void atl1c_phy_disable(struct atl1c_hw *hw)
+{
+	atl1c_power_saving(hw, 0);
+}
+
+
+int atl1c_phy_reset(struct atl1c_hw *hw)
+{
+	struct atl1c_adapter *adapter = hw->adapter;
+	struct pci_dev *pdev = adapter->pdev;
+	u16 phy_data;
+	u32 phy_ctrl_data, lpi_ctrl;
+	int err;
+
+	/* reset PHY core */
+	AT_READ_REG(hw, REG_GPHY_CTRL, &phy_ctrl_data);
+	phy_ctrl_data &= ~(GPHY_CTRL_EXT_RESET | GPHY_CTRL_PHY_IDDQ |
+		GPHY_CTRL_GATE_25M_EN | GPHY_CTRL_PWDOWN_HW | GPHY_CTRL_CLS);
+	phy_ctrl_data |= GPHY_CTRL_SEL_ANA_RST;
+	if (!(hw->ctrl_flags & ATL1C_HIB_DISABLE))
+		phy_ctrl_data |= (GPHY_CTRL_HIB_EN | GPHY_CTRL_HIB_PULSE);
+	else
+		phy_ctrl_data &= ~(GPHY_CTRL_HIB_EN | GPHY_CTRL_HIB_PULSE);
+	AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl_data);
+	AT_WRITE_FLUSH(hw);
+	udelay(10);
+	AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl_data | GPHY_CTRL_EXT_RESET);
+	AT_WRITE_FLUSH(hw);
+	udelay(10 * GPHY_CTRL_EXT_RST_TO);	/* delay 800us */
+
+	/* switch clock */
+	if (hw->nic_type == athr_l2c_b) {
+		atl1c_read_phy_dbg(hw, MIIDBG_CFGLPSPD, &phy_data);
+		atl1c_write_phy_dbg(hw, MIIDBG_CFGLPSPD,
+			phy_data & ~CFGLPSPD_RSTCNT_CLK125SW);
+	}
+
+	/* tx-half amplitude issue fix */
+	if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) {
+		atl1c_read_phy_dbg(hw, MIIDBG_CABLE1TH_DET, &phy_data);
+		phy_data |= CABLE1TH_DET_EN;
+		atl1c_write_phy_dbg(hw, MIIDBG_CABLE1TH_DET, phy_data);
+	}
+
+	/* clear bit3 of dbgport 3B to lower voltage */
+	if (!(hw->ctrl_flags & ATL1C_HIB_DISABLE)) {
+		if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2) {
+			atl1c_read_phy_dbg(hw, MIIDBG_VOLT_CTRL, &phy_data);
+			phy_data &= ~VOLT_CTRL_SWLOWEST;
+			atl1c_write_phy_dbg(hw, MIIDBG_VOLT_CTRL, phy_data);
+		}
+		/* power saving config */
+		phy_data =
+			hw->nic_type == athr_l1d || hw->nic_type == athr_l1d_2 ?
+			L1D_LEGCYPS_DEF : L1C_LEGCYPS_DEF;
+		atl1c_write_phy_dbg(hw, MIIDBG_LEGCYPS, phy_data);
+		/* hib */
+		atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
+			SYSMODCTRL_IECHOADJ_DEF);
+	} else {
+		/* disable pws */
+		atl1c_read_phy_dbg(hw, MIIDBG_LEGCYPS, &phy_data);
+		atl1c_write_phy_dbg(hw, MIIDBG_LEGCYPS,
+			phy_data & ~LEGCYPS_EN);
+		/* disable hibernate */
+		atl1c_read_phy_dbg(hw, MIIDBG_HIBNEG, &phy_data);
+		atl1c_write_phy_dbg(hw, MIIDBG_HIBNEG,
+			phy_data & HIBNEG_PSHIB_EN);
+	}
+	/* disable AZ(EEE) by default */
+	if (hw->nic_type == athr_l1d || hw->nic_type == athr_l1d_2 ||
+	    hw->nic_type == athr_l2c_b2) {
+		AT_READ_REG(hw, REG_LPI_CTRL, &lpi_ctrl);
+		AT_WRITE_REG(hw, REG_LPI_CTRL, lpi_ctrl & ~LPI_CTRL_EN);
+		atl1c_write_phy_ext(hw, MIIEXT_ANEG, MIIEXT_LOCAL_EEEADV, 0);
+		atl1c_write_phy_ext(hw, MIIEXT_PCS, MIIEXT_CLDCTRL3,
+			L2CB_CLDCTRL3);
+	}
+
+	/* other debug port to set */
+	atl1c_write_phy_dbg(hw, MIIDBG_ANACTRL, ANACTRL_DEF);
+	atl1c_write_phy_dbg(hw, MIIDBG_SRDSYSMOD, SRDSYSMOD_DEF);
+	atl1c_write_phy_dbg(hw, MIIDBG_TST10BTCFG, TST10BTCFG_DEF);
+	/* UNH-IOL test issue, set bit7 */
+	atl1c_write_phy_dbg(hw, MIIDBG_TST100BTCFG,
+		TST100BTCFG_DEF | TST100BTCFG_LITCH_EN);
+
+	/* set phy interrupt mask */
+	phy_data = IER_LINK_UP | IER_LINK_DOWN;
+	err = atl1c_write_phy_reg(hw, MII_IER, phy_data);
+	if (err) {
+		if (netif_msg_hw(adapter))
+			dev_err(&pdev->dev,
+				"Error enable PHY linkChange Interrupt\n");
+		return err;
+	}
+	return 0;
+}
+
+int atl1c_phy_init(struct atl1c_hw *hw)
+{
+	struct atl1c_adapter *adapter = hw->adapter;
+	struct pci_dev *pdev = adapter->pdev;
+	int ret_val;
+	u16 mii_bmcr_data = BMCR_RESET;
+
+	if (hw->nic_type == athr_mt) {
+		hw->phy_configured = true;
+		return 0;
+	}
+
+	if ((atl1c_read_phy_reg(hw, MII_PHYSID1, &hw->phy_id1) != 0) ||
+		(atl1c_read_phy_reg(hw, MII_PHYSID2, &hw->phy_id2) != 0)) {
+		dev_err(&pdev->dev, "Error get phy ID\n");
+		return -1;
+	}
+	switch (hw->media_type) {
+	case MEDIA_TYPE_AUTO_SENSOR:
+		ret_val = atl1c_phy_setup_adv(hw);
+		if (ret_val) {
+			if (netif_msg_link(adapter))
+				dev_err(&pdev->dev,
+					"Error Setting up Auto-Negotiation\n");
+			return ret_val;
+		}
+		mii_bmcr_data |= BMCR_ANENABLE | BMCR_ANRESTART;
+		break;
+	case MEDIA_TYPE_100M_FULL:
+		mii_bmcr_data |= BMCR_SPEED100 | BMCR_FULLDPLX;
+		break;
+	case MEDIA_TYPE_100M_HALF:
+		mii_bmcr_data |= BMCR_SPEED100;
+		break;
+	case MEDIA_TYPE_10M_FULL:
+		mii_bmcr_data |= BMCR_FULLDPLX;
+		break;
+	case MEDIA_TYPE_10M_HALF:
+		break;
+	default:
+		if (netif_msg_link(adapter))
+			dev_err(&pdev->dev, "Wrong Media type %d\n",
+				hw->media_type);
+		return -1;
+	}
+
+	ret_val = atl1c_write_phy_reg(hw, MII_BMCR, mii_bmcr_data);
+	if (ret_val)
+		return ret_val;
+	hw->phy_configured = true;
+
+	return 0;
+}
+
+bool atl1c_get_link_status(struct atl1c_hw *hw)
+{
+	u16 phy_data;
+
+	if (hw->nic_type == athr_mt) {
+		u32 spd;
+
+		AT_READ_REG(hw, REG_MT_SPEED, &spd);
+		return !!spd;
+	}
+
+	/* MII_BMSR must be read twice */
+	atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
+	atl1c_read_phy_reg(hw, MII_BMSR, &phy_data);
+	return !!(phy_data & BMSR_LSTATUS);
+}
+
+/*
+ * Detects the current speed and duplex settings of the hardware.
+ *
+ * hw - Struct containing variables accessed by shared code
+ * speed - Speed of the connection
+ * duplex - Duplex setting of the connection
+ */
+int atl1c_get_speed_and_duplex(struct atl1c_hw *hw, u16 *speed, u16 *duplex)
+{
+	int err;
+	u16 phy_data;
+
+	if (hw->nic_type == athr_mt) {
+		u32 spd;
+
+		AT_READ_REG(hw, REG_MT_SPEED, &spd);
+		*speed = spd;
+		*duplex = FULL_DUPLEX;
+		return 0;
+	}
+
+	/* Read   PHY Specific Status Register (17) */
+	err = atl1c_read_phy_reg(hw, MII_GIGA_PSSR, &phy_data);
+	if (err)
+		return err;
+
+	if (!(phy_data & GIGA_PSSR_SPD_DPLX_RESOLVED))
+		return -1;
+
+	switch (phy_data & GIGA_PSSR_SPEED) {
+	case GIGA_PSSR_1000MBS:
+		*speed = SPEED_1000;
+		break;
+	case GIGA_PSSR_100MBS:
+		*speed = SPEED_100;
+		break;
+	case  GIGA_PSSR_10MBS:
+		*speed = SPEED_10;
+		break;
+	default:
+		return -1;
+	}
+
+	if (phy_data & GIGA_PSSR_DPLX)
+		*duplex = FULL_DUPLEX;
+	else
+		*duplex = HALF_DUPLEX;
+
+	return 0;
+}
+
+/* select one link mode to get lower power consumption */
+int atl1c_phy_to_ps_link(struct atl1c_hw *hw)
+{
+	struct atl1c_adapter *adapter = hw->adapter;
+	struct pci_dev *pdev = adapter->pdev;
+	int ret = 0;
+	u16 autoneg_advertised = ADVERTISED_10baseT_Half;
+	u16 save_autoneg_advertised;
+	u16 mii_lpa_data;
+	u16 speed = SPEED_0;
+	u16 duplex = FULL_DUPLEX;
+	int i;
+
+	if (atl1c_get_link_status(hw)) {
+		atl1c_read_phy_reg(hw, MII_LPA, &mii_lpa_data);
+		if (mii_lpa_data & LPA_10FULL)
+			autoneg_advertised = ADVERTISED_10baseT_Full;
+		else if (mii_lpa_data & LPA_10HALF)
+			autoneg_advertised = ADVERTISED_10baseT_Half;
+		else if (mii_lpa_data & LPA_100HALF)
+			autoneg_advertised = ADVERTISED_100baseT_Half;
+		else if (mii_lpa_data & LPA_100FULL)
+			autoneg_advertised = ADVERTISED_100baseT_Full;
+
+		save_autoneg_advertised = hw->autoneg_advertised;
+		hw->phy_configured = false;
+		hw->autoneg_advertised = autoneg_advertised;
+		if (atl1c_restart_autoneg(hw) != 0) {
+			dev_dbg(&pdev->dev, "phy autoneg failed\n");
+			ret = -1;
+		}
+		hw->autoneg_advertised = save_autoneg_advertised;
+
+		if (mii_lpa_data) {
+			for (i = 0; i < AT_SUSPEND_LINK_TIMEOUT; i++) {
+				mdelay(100);
+				if (atl1c_get_link_status(hw)) {
+					if (atl1c_get_speed_and_duplex(hw, &speed,
+									&duplex) != 0)
+						dev_dbg(&pdev->dev,
+							"get speed and duplex failed\n");
+					break;
+				}
+			}
+		}
+	} else {
+		speed = SPEED_10;
+		duplex = HALF_DUPLEX;
+	}
+	adapter->link_speed = speed;
+	adapter->link_duplex = duplex;
+
+	return ret;
+}
+
+int atl1c_restart_autoneg(struct atl1c_hw *hw)
+{
+	int err = 0;
+	u16 mii_bmcr_data = BMCR_RESET;
+
+	err = atl1c_phy_setup_adv(hw);
+	if (err)
+		return err;
+	mii_bmcr_data |= BMCR_ANENABLE | BMCR_ANRESTART;
+
+	return atl1c_write_phy_reg(hw, MII_BMCR, mii_bmcr_data);
+}
+
+int atl1c_power_saving(struct atl1c_hw *hw, u32 wufc)
+{
+	struct atl1c_adapter *adapter = hw->adapter;
+	struct pci_dev *pdev = adapter->pdev;
+	u32 master_ctrl, mac_ctrl, phy_ctrl;
+	u32 wol_ctrl, speed;
+	u16 phy_data;
+
+	wol_ctrl = 0;
+	speed = adapter->link_speed == SPEED_1000 ?
+		MAC_CTRL_SPEED_1000 : MAC_CTRL_SPEED_10_100;
+
+	AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl);
+	AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl);
+	AT_READ_REG(hw, REG_GPHY_CTRL, &phy_ctrl);
+
+	master_ctrl &= ~MASTER_CTRL_CLK_SEL_DIS;
+	mac_ctrl = FIELD_SETX(mac_ctrl, MAC_CTRL_SPEED, speed);
+	mac_ctrl &= ~(MAC_CTRL_DUPLX | MAC_CTRL_RX_EN | MAC_CTRL_TX_EN);
+	if (adapter->link_duplex == FULL_DUPLEX)
+		mac_ctrl |= MAC_CTRL_DUPLX;
+	phy_ctrl &= ~(GPHY_CTRL_EXT_RESET | GPHY_CTRL_CLS);
+	phy_ctrl |= GPHY_CTRL_SEL_ANA_RST | GPHY_CTRL_HIB_PULSE |
+		GPHY_CTRL_HIB_EN;
+	if (!wufc) { /* without WoL */
+		master_ctrl |= MASTER_CTRL_CLK_SEL_DIS;
+		phy_ctrl |= GPHY_CTRL_PHY_IDDQ | GPHY_CTRL_PWDOWN_HW;
+		AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl);
+		AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl);
+		AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl);
+		AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
+		hw->phy_configured = false; /* re-init PHY when resume */
+		return 0;
+	}
+	phy_ctrl |= GPHY_CTRL_EXT_RESET;
+	if (wufc & AT_WUFC_MAG) {
+		mac_ctrl |= MAC_CTRL_RX_EN | MAC_CTRL_BC_EN;
+		wol_ctrl |= WOL_MAGIC_EN | WOL_MAGIC_PME_EN;
+		if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V11)
+			wol_ctrl |= WOL_PATTERN_EN | WOL_PATTERN_PME_EN;
+	}
+	if (wufc & AT_WUFC_LNKC) {
+		wol_ctrl |= WOL_LINK_CHG_EN | WOL_LINK_CHG_PME_EN;
+		if (atl1c_write_phy_reg(hw, MII_IER, IER_LINK_UP) != 0) {
+			dev_dbg(&pdev->dev, "%s: write phy MII_IER failed.\n",
+				atl1c_driver_name);
+		}
+	}
+	/* clear PHY interrupt */
+	atl1c_read_phy_reg(hw, MII_ISR, &phy_data);
+
+	dev_dbg(&pdev->dev, "%s: suspend MAC=%x,MASTER=%x,PHY=0x%x,WOL=%x\n",
+		atl1c_driver_name, mac_ctrl, master_ctrl, phy_ctrl, wol_ctrl);
+	AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl);
+	AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl);
+	AT_WRITE_REG(hw, REG_GPHY_CTRL, phy_ctrl);
+	AT_WRITE_REG(hw, REG_WOL_CTRL, wol_ctrl);
+
+	return 0;
+}
+
+
+/* configure phy after Link change Event */
+void atl1c_post_phy_linkchg(struct atl1c_hw *hw, u16 link_speed)
+{
+	u16 phy_val;
+	bool adj_thresh = false;
+
+	if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2 ||
+	    hw->nic_type == athr_l1d || hw->nic_type == athr_l1d_2)
+		adj_thresh = true;
+
+	if (link_speed != SPEED_0) { /* link up */
+		/* az with brcm, half-amp */
+		if (hw->nic_type == athr_l1d_2) {
+			atl1c_read_phy_ext(hw, MIIEXT_PCS, MIIEXT_CLDCTRL6,
+				&phy_val);
+			phy_val = FIELD_GETX(phy_val, CLDCTRL6_CAB_LEN);
+			phy_val = phy_val > CLDCTRL6_CAB_LEN_SHORT ?
+				AZ_ANADECT_LONG : AZ_ANADECT_DEF;
+			atl1c_write_phy_dbg(hw, MIIDBG_AZ_ANADECT, phy_val);
+		}
+		/* threshold adjust */
+		if (adj_thresh && link_speed == SPEED_100 && hw->msi_lnkpatch) {
+			atl1c_write_phy_dbg(hw, MIIDBG_MSE16DB, L1D_MSE16DB_UP);
+			atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
+				L1D_SYSMODCTRL_IECHOADJ_DEF);
+		}
+	} else { /* link down */
+		if (adj_thresh && hw->msi_lnkpatch) {
+			atl1c_write_phy_dbg(hw, MIIDBG_SYSMODCTRL,
+				SYSMODCTRL_IECHOADJ_DEF);
+			atl1c_write_phy_dbg(hw, MIIDBG_MSE16DB,
+				L1D_MSE16DB_DOWN);
+		}
+	}
+}
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
new file mode 100644
index 000000000..c567c9206
--- /dev/null
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
@@ -0,0 +1,1047 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright(c) 2008 - 2009 Atheros Corporation. All rights reserved.
+ *
+ * Derived from Intel e1000 driver
+ * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
+ */
+
+#ifndef _ATL1C_HW_H_
+#define _ATL1C_HW_H_
+
+#include <linux/types.h>
+#include <linux/mii.h>
+
+#define FIELD_GETX(_x, _name)   ((_x) >> (_name##_SHIFT) & (_name##_MASK))
+#define FIELD_SETX(_x, _name, _v) \
+(((_x) & ~((_name##_MASK) << (_name##_SHIFT))) |\
+(((_v) & (_name##_MASK)) << (_name##_SHIFT)))
+#define FIELDX(_name, _v) (((_v) & (_name##_MASK)) << (_name##_SHIFT))
+
+struct atl1c_adapter;
+struct atl1c_hw;
+
+/* function prototype */
+void atl1c_phy_disable(struct atl1c_hw *hw);
+void atl1c_hw_set_mac_addr(struct atl1c_hw *hw, u8 *mac_addr);
+int atl1c_phy_reset(struct atl1c_hw *hw);
+int atl1c_read_mac_addr(struct atl1c_hw *hw);
+bool atl1c_get_link_status(struct atl1c_hw *hw);
+int atl1c_get_speed_and_duplex(struct atl1c_hw *hw, u16 *speed, u16 *duplex);
+u32 atl1c_hash_mc_addr(struct atl1c_hw *hw, u8 *mc_addr);
+void atl1c_hash_set(struct atl1c_hw *hw, u32 hash_value);
+int atl1c_read_phy_reg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data);
+int atl1c_write_phy_reg(struct atl1c_hw *hw, u32 reg_addr, u16 phy_data);
+bool atl1c_read_eeprom(struct atl1c_hw *hw, u32 offset, u32 *p_value);
+int atl1c_phy_init(struct atl1c_hw *hw);
+int atl1c_check_eeprom_exist(struct atl1c_hw *hw);
+int atl1c_restart_autoneg(struct atl1c_hw *hw);
+int atl1c_phy_to_ps_link(struct atl1c_hw *hw);
+int atl1c_power_saving(struct atl1c_hw *hw, u32 wufc);
+bool atl1c_wait_mdio_idle(struct atl1c_hw *hw);
+void atl1c_stop_phy_polling(struct atl1c_hw *hw);
+void atl1c_start_phy_polling(struct atl1c_hw *hw, u16 clk_sel);
+int atl1c_read_phy_core(struct atl1c_hw *hw, bool ext, u8 dev,
+			u16 reg, u16 *phy_data);
+int atl1c_write_phy_core(struct atl1c_hw *hw, bool ext, u8 dev,
+			u16 reg, u16 phy_data);
+int atl1c_read_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
+			u16 reg_addr, u16 *phy_data);
+int atl1c_write_phy_ext(struct atl1c_hw *hw, u8 dev_addr,
+			u16 reg_addr, u16 phy_data);
+int atl1c_read_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 *phy_data);
+int atl1c_write_phy_dbg(struct atl1c_hw *hw, u16 reg_addr, u16 phy_data);
+void atl1c_post_phy_linkchg(struct atl1c_hw *hw, u16 link_speed);
+
+/* hw-ids */
+#define PCI_DEVICE_ID_ATTANSIC_L2C      0x1062
+#define PCI_DEVICE_ID_ATTANSIC_L1C      0x1063
+#define PCI_DEVICE_ID_ATHEROS_L2C_B	0x2060 /* AR8152 v1.1 Fast 10/100 */
+#define PCI_DEVICE_ID_ATHEROS_L2C_B2	0x2062 /* AR8152 v2.0 Fast 10/100 */
+#define PCI_DEVICE_ID_ATHEROS_L1D	0x1073 /* AR8151 v1.0 Gigabit 1000 */
+#define PCI_DEVICE_ID_ATHEROS_L1D_2_0	0x1083 /* AR8151 v2.0 Gigabit 1000 */
+#define L2CB_V10			0xc0
+#define L2CB_V11			0xc1
+#define L2CB_V20			0xc0
+#define L2CB_V21			0xc1
+
+/* register definition */
+#define REG_DEVICE_CAP              	0x5C
+#define DEVICE_CAP_MAX_PAYLOAD_MASK     0x7
+#define DEVICE_CAP_MAX_PAYLOAD_SHIFT    0
+
+#define DEVICE_CTRL_MAXRRS_MIN		2
+
+#define REG_LINK_CTRL			0x68
+#define LINK_CTRL_L0S_EN		0x01
+#define LINK_CTRL_L1_EN			0x02
+#define LINK_CTRL_EXT_SYNC		0x80
+
+#define REG_PCIE_IND_ACC_ADDR		0x80
+#define REG_PCIE_IND_ACC_DATA		0x84
+
+#define REG_DEV_SERIALNUM_CTRL		0x200
+#define REG_DEV_MAC_SEL_MASK		0x0 /* 0:EUI; 1:MAC */
+#define REG_DEV_MAC_SEL_SHIFT		0
+#define REG_DEV_SERIAL_NUM_EN_MASK	0x1
+#define REG_DEV_SERIAL_NUM_EN_SHIFT	1
+
+#define REG_TWSI_CTRL               	0x218
+#define TWSI_CTLR_FREQ_MASK		0x3UL
+#define TWSI_CTRL_FREQ_SHIFT		24
+#define TWSI_CTRL_FREQ_100K		0
+#define TWSI_CTRL_FREQ_200K		1
+#define TWSI_CTRL_FREQ_300K		2
+#define TWSI_CTRL_FREQ_400K		3
+#define TWSI_CTRL_LD_EXIST		BIT(23)
+#define TWSI_CTRL_HW_LDSTAT		BIT(12)	/* 0:finish,1:in progress */
+#define TWSI_CTRL_SW_LDSTART            BIT(11)
+#define TWSI_CTRL_LD_OFFSET_MASK        0xFF
+#define TWSI_CTRL_LD_OFFSET_SHIFT       0
+
+#define REG_PCIE_DEV_MISC_CTRL      	0x21C
+#define PCIE_DEV_MISC_EXT_PIPE     	0x2
+#define PCIE_DEV_MISC_RETRY_BUFDIS 	0x1
+#define PCIE_DEV_MISC_SPIROM_EXIST 	0x4
+#define PCIE_DEV_MISC_SERDES_ENDIAN    	0x8
+#define PCIE_DEV_MISC_SERDES_SEL_DIN   	0x10
+
+#define REG_PCIE_PHYMISC	    	0x1000
+#define PCIE_PHYMISC_FORCE_RCV_DET	BIT(2)
+#define PCIE_PHYMISC_NFTS_MASK		0xFFUL
+#define PCIE_PHYMISC_NFTS_SHIFT		16
+
+#define REG_PCIE_PHYMISC2		0x1004
+#define PCIE_PHYMISC2_L0S_TH_MASK	0x3UL
+#define PCIE_PHYMISC2_L0S_TH_SHIFT	18
+#define L2CB1_PCIE_PHYMISC2_L0S_TH	3
+#define PCIE_PHYMISC2_CDR_BW_MASK	0x3UL
+#define PCIE_PHYMISC2_CDR_BW_SHIFT	16
+#define L2CB1_PCIE_PHYMISC2_CDR_BW	3
+
+#define REG_TWSI_DEBUG			0x1108
+#define TWSI_DEBUG_DEV_EXIST		BIT(29)
+
+#define REG_DMA_DBG			0x1114
+#define DMA_DBG_VENDOR_MSG		BIT(0)
+
+#define REG_EEPROM_CTRL			0x12C0
+#define EEPROM_CTRL_DATA_HI_MASK	0xFFFF
+#define EEPROM_CTRL_DATA_HI_SHIFT	0
+#define EEPROM_CTRL_ADDR_MASK		0x3FF
+#define EEPROM_CTRL_ADDR_SHIFT		16
+#define EEPROM_CTRL_ACK			0x40000000
+#define EEPROM_CTRL_RW			0x80000000
+
+#define REG_EEPROM_DATA_LO		0x12C4
+
+#define REG_OTP_CTRL			0x12F0
+#define OTP_CTRL_CLK_EN			BIT(1)
+
+#define REG_PM_CTRL			0x12F8
+#define PM_CTRL_HOTRST			BIT(31)
+#define PM_CTRL_MAC_ASPM_CHK		BIT(30)	/* L0s/L1 dis by MAC based on
+						 * thrghput(setting in 15A0) */
+#define PM_CTRL_SA_DLY_EN		BIT(29)
+#define PM_CTRL_L0S_BUFSRX_EN		BIT(28)
+#define PM_CTRL_LCKDET_TIMER_MASK	0xFUL
+#define PM_CTRL_LCKDET_TIMER_SHIFT	24
+#define PM_CTRL_LCKDET_TIMER_DEF	0xC
+#define PM_CTRL_PM_REQ_TIMER_MASK	0xFUL
+#define PM_CTRL_PM_REQ_TIMER_SHIFT	20	/* pm_request_l1 time > @
+						 * ->L0s not L1 */
+#define PM_CTRL_PM_REQ_TO_DEF		0xF
+#define PMCTRL_TXL1_AFTER_L0S		BIT(19)	/* l1dv2.0+ */
+#define L1D_PMCTRL_L1_ENTRY_TM_MASK	7UL	/* l1dv2.0+, 3bits */
+#define L1D_PMCTRL_L1_ENTRY_TM_SHIFT	16
+#define L1D_PMCTRL_L1_ENTRY_TM_DIS	0
+#define L1D_PMCTRL_L1_ENTRY_TM_2US	1
+#define L1D_PMCTRL_L1_ENTRY_TM_4US	2
+#define L1D_PMCTRL_L1_ENTRY_TM_8US	3
+#define L1D_PMCTRL_L1_ENTRY_TM_16US	4
+#define L1D_PMCTRL_L1_ENTRY_TM_24US	5
+#define L1D_PMCTRL_L1_ENTRY_TM_32US	6
+#define L1D_PMCTRL_L1_ENTRY_TM_63US	7
+#define PM_CTRL_L1_ENTRY_TIMER_MASK	0xFUL  /* l1C 4bits */
+#define PM_CTRL_L1_ENTRY_TIMER_SHIFT	16
+#define L2CB1_PM_CTRL_L1_ENTRY_TM	7
+#define L1C_PM_CTRL_L1_ENTRY_TM		0xF
+#define PM_CTRL_RCVR_WT_TIMER		BIT(15)	/* 1:1us, 0:2ms */
+#define PM_CTRL_CLK_PWM_VER1_1		BIT(14)	/* 0:1.0a,1:1.1 */
+#define PM_CTRL_CLK_SWH_L1		BIT(13)	/* en pcie clk sw in L1 */
+#define PM_CTRL_ASPM_L0S_EN		BIT(12)
+#define PM_CTRL_RXL1_AFTER_L0S		BIT(11)	/* l1dv2.0+ */
+#define L1D_PMCTRL_L0S_TIMER_MASK	7UL	/* l1d2.0+, 3bits*/
+#define L1D_PMCTRL_L0S_TIMER_SHIFT	8
+#define PM_CTRL_L0S_ENTRY_TIMER_MASK	0xFUL	/* l1c, 4bits */
+#define PM_CTRL_L0S_ENTRY_TIMER_SHIFT	8
+#define PM_CTRL_SERDES_BUFS_RX_L1_EN	BIT(7)
+#define PM_CTRL_SERDES_PD_EX_L1		BIT(6)	/* power down serdes rx */
+#define PM_CTRL_SERDES_PLL_L1_EN	BIT(5)
+#define PM_CTRL_SERDES_L1_EN		BIT(4)
+#define PM_CTRL_ASPM_L1_EN		BIT(3)
+#define PM_CTRL_CLK_REQ_EN		BIT(2)
+#define PM_CTRL_RBER_EN			BIT(1)
+#define PM_CTRL_SPRSDWER_EN		BIT(0)
+
+#define REG_LTSSM_ID_CTRL		0x12FC
+#define LTSSM_ID_EN_WRO			0x1000
+
+
+/* Selene Master Control Register */
+#define REG_MASTER_CTRL			0x1400
+#define MASTER_CTRL_OTP_SEL		BIT(31)
+#define MASTER_DEV_NUM_MASK		0x7FUL
+#define MASTER_DEV_NUM_SHIFT		24
+#define MASTER_REV_NUM_MASK		0xFFUL
+#define MASTER_REV_NUM_SHIFT		16
+#define MASTER_CTRL_INT_RDCLR		BIT(14)
+#define MASTER_CTRL_CLK_SEL_DIS		BIT(12)	/* 1:alwys sel pclk from
+						 * serdes, not sw to 25M */
+#define MASTER_CTRL_RX_ITIMER_EN	BIT(11)	/* IRQ MODURATION FOR RX */
+#define MASTER_CTRL_TX_ITIMER_EN	BIT(10)	/* MODURATION FOR TX/RX */
+#define MASTER_CTRL_MANU_INT		BIT(9)	/* SOFT MANUAL INT */
+#define MASTER_CTRL_MANUTIMER_EN	BIT(8)
+#define MASTER_CTRL_SA_TIMER_EN		BIT(7)	/* SYS ALIVE TIMER EN */
+#define MASTER_CTRL_OOB_DIS		BIT(6)	/* OUT OF BOX DIS */
+#define MASTER_CTRL_WAKEN_25M		BIT(5)	/* WAKE WO. PCIE CLK */
+#define MASTER_CTRL_BERT_START		BIT(4)
+#define MASTER_PCIE_TSTMOD_MASK		3UL
+#define MASTER_PCIE_TSTMOD_SHIFT	2
+#define MASTER_PCIE_RST			BIT(1)
+#define MASTER_CTRL_SOFT_RST		BIT(0)	/* RST MAC & DMA */
+#define DMA_MAC_RST_TO			50
+
+/* Timer Initial Value Register */
+#define REG_MANUAL_TIMER_INIT       	0x1404
+
+/* IRQ ModeratorTimer Initial Value Register */
+#define REG_IRQ_MODRT_TIMER_INIT     	0x1408
+#define IRQ_MODRT_TIMER_MASK		0xffff
+#define IRQ_MODRT_TX_TIMER_SHIFT    	0
+#define IRQ_MODRT_RX_TIMER_SHIFT	16
+
+#define REG_GPHY_CTRL               	0x140C
+#define GPHY_CTRL_ADDR_MASK		0x1FUL
+#define GPHY_CTRL_ADDR_SHIFT		19
+#define GPHY_CTRL_BP_VLTGSW		BIT(18)
+#define GPHY_CTRL_100AB_EN		BIT(17)
+#define GPHY_CTRL_10AB_EN		BIT(16)
+#define GPHY_CTRL_PHY_PLL_BYPASS	BIT(15)
+#define GPHY_CTRL_PWDOWN_HW		BIT(14)	/* affect MAC&PHY, to low pw */
+#define GPHY_CTRL_PHY_PLL_ON		BIT(13)	/* 1:pll always on, 0:can sw */
+#define GPHY_CTRL_SEL_ANA_RST		BIT(12)
+#define GPHY_CTRL_HIB_PULSE		BIT(11)
+#define GPHY_CTRL_HIB_EN		BIT(10)
+#define GPHY_CTRL_GIGA_DIS		BIT(9)
+#define GPHY_CTRL_PHY_IDDQ_DIS		BIT(8)	/* pw on RST */
+#define GPHY_CTRL_PHY_IDDQ		BIT(7)	/* bit8 affect bit7 while rb */
+#define GPHY_CTRL_LPW_EXIT		BIT(6)
+#define GPHY_CTRL_GATE_25M_EN		BIT(5)
+#define GPHY_CTRL_REV_ANEG		BIT(4)
+#define GPHY_CTRL_ANEG_NOW		BIT(3)
+#define GPHY_CTRL_LED_MODE		BIT(2)
+#define GPHY_CTRL_RTL_MODE		BIT(1)
+#define GPHY_CTRL_EXT_RESET		BIT(0)	/* 1:out of DSP RST status */
+#define GPHY_CTRL_EXT_RST_TO		80	/* 800us atmost */
+#define GPHY_CTRL_CLS			(\
+	GPHY_CTRL_LED_MODE		|\
+	GPHY_CTRL_100AB_EN		|\
+	GPHY_CTRL_PHY_PLL_ON)
+
+/* Block IDLE Status Register */
+#define REG_IDLE_STATUS			0x1410
+#define IDLE_STATUS_SFORCE_MASK		0xFUL
+#define IDLE_STATUS_SFORCE_SHIFT	14
+#define IDLE_STATUS_CALIB_DONE		BIT(13)
+#define IDLE_STATUS_CALIB_RES_MASK	0x1FUL
+#define IDLE_STATUS_CALIB_RES_SHIFT	8
+#define IDLE_STATUS_CALIBERR_MASK	0xFUL
+#define IDLE_STATUS_CALIBERR_SHIFT	4
+#define IDLE_STATUS_TXQ_BUSY		BIT(3)
+#define IDLE_STATUS_RXQ_BUSY		BIT(2)
+#define IDLE_STATUS_TXMAC_BUSY		BIT(1)
+#define IDLE_STATUS_RXMAC_BUSY		BIT(0)
+#define IDLE_STATUS_MASK		(\
+	IDLE_STATUS_TXQ_BUSY		|\
+	IDLE_STATUS_RXQ_BUSY		|\
+	IDLE_STATUS_TXMAC_BUSY		|\
+	IDLE_STATUS_RXMAC_BUSY)
+
+/* MDIO Control Register */
+#define REG_MDIO_CTRL           	0x1414
+#define MDIO_CTRL_MODE_EXT		BIT(30)
+#define MDIO_CTRL_POST_READ		BIT(29)
+#define MDIO_CTRL_AP_EN			BIT(28)
+#define MDIO_CTRL_BUSY			BIT(27)
+#define MDIO_CTRL_CLK_SEL_MASK		0x7UL
+#define MDIO_CTRL_CLK_SEL_SHIFT		24
+#define MDIO_CTRL_CLK_25_4		0	/* 25MHz divide 4 */
+#define MDIO_CTRL_CLK_25_6		2
+#define MDIO_CTRL_CLK_25_8		3
+#define MDIO_CTRL_CLK_25_10		4
+#define MDIO_CTRL_CLK_25_32		5
+#define MDIO_CTRL_CLK_25_64		6
+#define MDIO_CTRL_CLK_25_128		7
+#define MDIO_CTRL_START			BIT(23)
+#define MDIO_CTRL_SPRES_PRMBL		BIT(22)
+#define MDIO_CTRL_OP_READ		BIT(21)	/* 1:read, 0:write */
+#define MDIO_CTRL_REG_MASK		0x1FUL
+#define MDIO_CTRL_REG_SHIFT		16
+#define MDIO_CTRL_DATA_MASK		0xFFFFUL
+#define MDIO_CTRL_DATA_SHIFT		0
+#define MDIO_MAX_AC_TO			120	/* 1.2ms timeout for slow clk */
+
+/* for extension reg access */
+#define REG_MDIO_EXTN			0x1448
+#define MDIO_EXTN_PORTAD_MASK		0x1FUL
+#define MDIO_EXTN_PORTAD_SHIFT		21
+#define MDIO_EXTN_DEVAD_MASK		0x1FUL
+#define MDIO_EXTN_DEVAD_SHIFT		16
+#define MDIO_EXTN_REG_MASK		0xFFFFUL
+#define MDIO_EXTN_REG_SHIFT		0
+
+/* BIST Control and Status Register0 (for the Packet Memory) */
+#define REG_BIST0_CTRL              	0x141c
+#define BIST0_NOW                   	0x1
+#define BIST0_SRAM_FAIL             	0x2 /* 1: The SRAM failure is
+					     * un-repairable  because
+					     * it has address decoder
+					     * failure or more than 1 cell
+					     * stuck-to-x failure */
+#define BIST0_FUSE_FLAG             	0x4
+
+/* BIST Control and Status Register1(for the retry buffer of PCI Express) */
+#define REG_BIST1_CTRL			0x1420
+#define BIST1_NOW                   	0x1
+#define BIST1_SRAM_FAIL             	0x2
+#define BIST1_FUSE_FLAG             	0x4
+
+/* SerDes Lock Detect Control and Status Register */
+#define REG_SERDES			0x1424
+#define SERDES_PHY_CLK_SLOWDOWN		BIT(18)
+#define SERDES_MAC_CLK_SLOWDOWN		BIT(17)
+#define SERDES_SELFB_PLL_MASK		0x3UL
+#define SERDES_SELFB_PLL_SHIFT		14
+#define SERDES_PHYCLK_SEL_GTX		BIT(13)	/* 1:gtx_clk, 0:25M */
+#define SERDES_PCIECLK_SEL_SRDS		BIT(12)	/* 1:serdes,0:25M */
+#define SERDES_BUFS_RX_EN		BIT(11)
+#define SERDES_PD_RX			BIT(10)
+#define SERDES_PLL_EN			BIT(9)
+#define SERDES_EN			BIT(8)
+#define SERDES_SELFB_PLL_SEL_CSR	BIT(6)	/* 0:state-machine,1:csr */
+#define SERDES_SELFB_PLL_CSR_MASK	0x3UL
+#define SERDES_SELFB_PLL_CSR_SHIFT	4
+#define SERDES_SELFB_PLL_CSR_4		3	/* 4-12% OV-CLK */
+#define SERDES_SELFB_PLL_CSR_0		2	/* 0-4% OV-CLK */
+#define SERDES_SELFB_PLL_CSR_12		1	/* 12-18% OV-CLK */
+#define SERDES_SELFB_PLL_CSR_18		0	/* 18-25% OV-CLK */
+#define SERDES_VCO_SLOW			BIT(3)
+#define SERDES_VCO_FAST			BIT(2)
+#define SERDES_LOCK_DETECT_EN		BIT(1)
+#define SERDES_LOCK_DETECT		BIT(0)
+
+#define REG_LPI_DECISN_TIMER            0x143C
+#define L2CB_LPI_DESISN_TIMER		0x7D00
+
+#define REG_LPI_CTRL                    0x1440
+#define LPI_CTRL_CHK_DA			BIT(31)
+#define LPI_CTRL_ENH_TO_MASK		0x1FFFUL
+#define LPI_CTRL_ENH_TO_SHIFT		12
+#define LPI_CTRL_ENH_TH_MASK		0x1FUL
+#define LPI_CTRL_ENH_TH_SHIFT		6
+#define LPI_CTRL_ENH_EN			BIT(5)
+#define LPI_CTRL_CHK_RX			BIT(4)
+#define LPI_CTRL_CHK_STATE		BIT(3)
+#define LPI_CTRL_GMII			BIT(2)
+#define LPI_CTRL_TO_PHY			BIT(1)
+#define LPI_CTRL_EN			BIT(0)
+
+#define REG_LPI_WAIT			0x1444
+#define LPI_WAIT_TIMER_MASK		0xFFFFUL
+#define LPI_WAIT_TIMER_SHIFT		0
+
+/* MAC Control Register  */
+#define REG_MAC_CTRL         		0x1480
+#define MAC_CTRL_SPEED_MODE_SW		BIT(30) /* 0:phy,1:sw */
+#define MAC_CTRL_HASH_ALG_CRC32		BIT(29) /* 1:legacy,0:lw_5b */
+#define MAC_CTRL_SINGLE_PAUSE_EN	BIT(28)
+#define MAC_CTRL_DBG			BIT(27)
+#define MAC_CTRL_BC_EN			BIT(26)
+#define MAC_CTRL_MC_ALL_EN		BIT(25)
+#define MAC_CTRL_RX_CHKSUM_EN		BIT(24)
+#define MAC_CTRL_TX_HUGE		BIT(23)
+#define MAC_CTRL_DBG_TX_BKPRESURE	BIT(22)
+#define MAC_CTRL_SPEED_MASK		3UL
+#define MAC_CTRL_SPEED_SHIFT		20
+#define MAC_CTRL_SPEED_10_100		1
+#define MAC_CTRL_SPEED_1000		2
+#define MAC_CTRL_TX_SIMURST		BIT(19)
+#define MAC_CTRL_SCNT			BIT(17)
+#define MAC_CTRL_TX_PAUSE		BIT(16)
+#define MAC_CTRL_PROMIS_EN		BIT(15)
+#define MAC_CTRL_RMV_VLAN		BIT(14)
+#define MAC_CTRL_PRMLEN_MASK		0xFUL
+#define MAC_CTRL_PRMLEN_SHIFT		10
+#define MAC_CTRL_HUGE_EN		BIT(9)
+#define MAC_CTRL_LENCHK			BIT(8)
+#define MAC_CTRL_PAD			BIT(7)
+#define MAC_CTRL_ADD_CRC		BIT(6)
+#define MAC_CTRL_DUPLX			BIT(5)
+#define MAC_CTRL_LOOPBACK		BIT(4)
+#define MAC_CTRL_RX_FLOW		BIT(3)
+#define MAC_CTRL_TX_FLOW		BIT(2)
+#define MAC_CTRL_RX_EN			BIT(1)
+#define MAC_CTRL_TX_EN			BIT(0)
+
+/* MAC IPG/IFG Control Register  */
+#define REG_MAC_IPG_IFG             	0x1484
+#define MAC_IPG_IFG_IPGT_SHIFT      	0 	/* Desired back to back
+						 * inter-packet gap. The
+						 * default is 96-bit time */
+#define MAC_IPG_IFG_IPGT_MASK       	0x7f
+#define MAC_IPG_IFG_MIFG_SHIFT      	8       /* Minimum number of IFG to
+						 * enforce in between RX frames */
+#define MAC_IPG_IFG_MIFG_MASK       	0xff  	/* Frame gap below such IFP is dropped */
+#define MAC_IPG_IFG_IPGR1_SHIFT     	16   	/* 64bit Carrier-Sense window */
+#define MAC_IPG_IFG_IPGR1_MASK      	0x7f
+#define MAC_IPG_IFG_IPGR2_SHIFT     	24    	/* 96-bit IPG window */
+#define MAC_IPG_IFG_IPGR2_MASK      	0x7f
+
+/* MAC STATION ADDRESS  */
+#define REG_MAC_STA_ADDR		0x1488
+
+/* Hash table for multicast address */
+#define REG_RX_HASH_TABLE		0x1490
+
+/* MAC Half-Duplex Control Register */
+#define REG_MAC_HALF_DUPLX_CTRL     	0x1498
+#define MAC_HALF_DUPLX_CTRL_LCOL_SHIFT  0      /* Collision Window */
+#define MAC_HALF_DUPLX_CTRL_LCOL_MASK   0x3ff
+#define MAC_HALF_DUPLX_CTRL_RETRY_SHIFT 12
+#define MAC_HALF_DUPLX_CTRL_RETRY_MASK  0xf
+#define MAC_HALF_DUPLX_CTRL_EXC_DEF_EN  0x10000
+#define MAC_HALF_DUPLX_CTRL_NO_BACK_C   0x20000
+#define MAC_HALF_DUPLX_CTRL_NO_BACK_P   0x40000 /* No back-off on backpressure,
+						 * immediately start the
+						 * transmission after back pressure */
+#define MAC_HALF_DUPLX_CTRL_ABEBE        0x80000 /* 1: Alternative Binary Exponential Back-off Enabled */
+#define MAC_HALF_DUPLX_CTRL_ABEBT_SHIFT  20      /* Maximum binary exponential number */
+#define MAC_HALF_DUPLX_CTRL_ABEBT_MASK   0xf
+#define MAC_HALF_DUPLX_CTRL_JAMIPG_SHIFT 24      /* IPG to start JAM for collision based flow control in half-duplex */
+#define MAC_HALF_DUPLX_CTRL_JAMIPG_MASK  0xf     /* mode. In unit of 8-bit time */
+
+/* Maximum Frame Length Control Register   */
+#define REG_MTU                     	0x149c
+
+/* Wake-On-Lan control register */
+#define REG_WOL_CTRL                	0x14a0
+#define WOL_PT7_MATCH			BIT(31)
+#define WOL_PT6_MATCH			BIT(30)
+#define WOL_PT5_MATCH			BIT(29)
+#define WOL_PT4_MATCH			BIT(28)
+#define WOL_PT3_MATCH			BIT(27)
+#define WOL_PT2_MATCH			BIT(26)
+#define WOL_PT1_MATCH			BIT(25)
+#define WOL_PT0_MATCH			BIT(24)
+#define WOL_PT7_EN			BIT(23)
+#define WOL_PT6_EN			BIT(22)
+#define WOL_PT5_EN			BIT(21)
+#define WOL_PT4_EN			BIT(20)
+#define WOL_PT3_EN			BIT(19)
+#define WOL_PT2_EN			BIT(18)
+#define WOL_PT1_EN			BIT(17)
+#define WOL_PT0_EN			BIT(16)
+#define WOL_LNKCHG_ST			BIT(10)
+#define WOL_MAGIC_ST			BIT(9)
+#define WOL_PATTERN_ST			BIT(8)
+#define WOL_OOB_EN			BIT(6)
+#define WOL_LINK_CHG_PME_EN		BIT(5)
+#define WOL_LINK_CHG_EN			BIT(4)
+#define WOL_MAGIC_PME_EN		BIT(3)
+#define WOL_MAGIC_EN			BIT(2)
+#define WOL_PATTERN_PME_EN		BIT(1)
+#define WOL_PATTERN_EN			BIT(0)
+
+/* WOL Length ( 2 DWORD ) */
+#define REG_WOL_PTLEN1			0x14A4
+#define WOL_PTLEN1_3_MASK		0xFFUL
+#define WOL_PTLEN1_3_SHIFT		24
+#define WOL_PTLEN1_2_MASK		0xFFUL
+#define WOL_PTLEN1_2_SHIFT		16
+#define WOL_PTLEN1_1_MASK		0xFFUL
+#define WOL_PTLEN1_1_SHIFT		8
+#define WOL_PTLEN1_0_MASK		0xFFUL
+#define WOL_PTLEN1_0_SHIFT		0
+
+#define REG_WOL_PTLEN2			0x14A8
+#define WOL_PTLEN2_7_MASK		0xFFUL
+#define WOL_PTLEN2_7_SHIFT		24
+#define WOL_PTLEN2_6_MASK		0xFFUL
+#define WOL_PTLEN2_6_SHIFT		16
+#define WOL_PTLEN2_5_MASK		0xFFUL
+#define WOL_PTLEN2_5_SHIFT		8
+#define WOL_PTLEN2_4_MASK		0xFFUL
+#define WOL_PTLEN2_4_SHIFT		0
+
+/* Internal SRAM Partition Register */
+#define RFDX_HEAD_ADDR_MASK		0x03FF
+#define RFDX_HARD_ADDR_SHIFT		0
+#define RFDX_TAIL_ADDR_MASK		0x03FF
+#define RFDX_TAIL_ADDR_SHIFT            16
+
+#define REG_SRAM_RFD0_INFO		0x1500
+#define REG_SRAM_RFD1_INFO		0x1504
+#define REG_SRAM_RFD2_INFO		0x1508
+#define	REG_SRAM_RFD3_INFO		0x150C
+
+#define REG_RFD_NIC_LEN			0x1510 /* In 8-bytes */
+#define RFD_NIC_LEN_MASK		0x03FF
+
+#define REG_SRAM_TRD_ADDR           	0x1518
+#define TPD_HEAD_ADDR_MASK		0x03FF
+#define TPD_HEAD_ADDR_SHIFT		0
+#define TPD_TAIL_ADDR_MASK		0x03FF
+#define TPD_TAIL_ADDR_SHIFT		16
+
+#define REG_SRAM_TRD_LEN            	0x151C /* In 8-bytes */
+#define TPD_NIC_LEN_MASK		0x03FF
+
+#define REG_SRAM_RXF_ADDR          	0x1520
+#define REG_SRAM_RXF_LEN            	0x1524
+#define REG_SRAM_TXF_ADDR           	0x1528
+#define REG_SRAM_TXF_LEN            	0x152C
+#define REG_SRAM_TCPH_ADDR          	0x1530
+#define REG_SRAM_PKTH_ADDR          	0x1532
+
+/*
+ * Load Ptr Register
+ * Software sets this bit after the initialization of the head and tail */
+#define REG_LOAD_PTR                	0x1534
+
+/*
+ * addresses of all descriptors, as well as the following descriptor
+ * control register, which triggers each function block to load the head
+ * pointer to prepare for the operation. This bit is then self-cleared
+ * after one cycle.
+ */
+#define REG_RX_BASE_ADDR_HI		0x1540
+#define REG_TX_BASE_ADDR_HI		0x1544
+#define REG_RFD0_HEAD_ADDR_LO		0x1550
+#define REG_RFD1_HEAD_ADDR_LO          0x1554
+#define REG_RFD2_HEAD_ADDR_LO          0x1558
+#define REG_RFD3_HEAD_ADDR_LO          0x155C
+#define REG_RFD_RING_SIZE		0x1560
+#define RFD_RING_SIZE_MASK		0x0FFF
+#define REG_RX_BUF_SIZE			0x1564
+#define RX_BUF_SIZE_MASK		0xFFFF
+#define REG_RRD0_HEAD_ADDR_LO		0x1568
+#define REG_RRD1_HEAD_ADDR_LO          0x156C
+#define REG_RRD2_HEAD_ADDR_LO          0x1570
+#define REG_RRD3_HEAD_ADDR_LO          0x1574
+#define REG_RRD_RING_SIZE		0x1578
+#define RRD_RING_SIZE_MASK		0x0FFF
+#define REG_TPD_PRI1_ADDR_LO		0x157C
+#define REG_TPD_PRI0_ADDR_LO		0x1580
+#define REG_TPD_PRI2_ADDR_LO           0x1F10
+#define REG_TPD_PRI3_ADDR_LO           0x1F14
+
+#define REG_TPD_RING_SIZE		0x1584
+#define TPD_RING_SIZE_MASK		0xFFFF
+
+/* TXQ Control Register */
+#define REG_TXQ_CTRL			0x1590
+#define TXQ_TXF_BURST_NUM_MASK          0xFFFFUL
+#define TXQ_TXF_BURST_NUM_SHIFT		16
+#define L1C_TXQ_TXF_BURST_PREF          0x200
+#define L2CB_TXQ_TXF_BURST_PREF         0x40
+#define TXQ_CTRL_PEDING_CLR             BIT(8)
+#define TXQ_CTRL_LS_8023_EN             BIT(7)
+#define TXQ_CTRL_ENH_MODE               BIT(6)
+#define TXQ_CTRL_EN                     BIT(5)
+#define TXQ_CTRL_IP_OPTION_EN           BIT(4)
+#define TXQ_NUM_TPD_BURST_MASK          0xFUL
+#define TXQ_NUM_TPD_BURST_SHIFT         0
+#define TXQ_NUM_TPD_BURST_DEF           5
+#define TXQ_CFGV			(\
+	FIELDX(TXQ_NUM_TPD_BURST, TXQ_NUM_TPD_BURST_DEF) |\
+	TXQ_CTRL_ENH_MODE |\
+	TXQ_CTRL_LS_8023_EN |\
+	TXQ_CTRL_IP_OPTION_EN)
+#define L1C_TXQ_CFGV			(\
+	TXQ_CFGV |\
+	FIELDX(TXQ_TXF_BURST_NUM, L1C_TXQ_TXF_BURST_PREF))
+#define L2CB_TXQ_CFGV			(\
+	TXQ_CFGV |\
+	FIELDX(TXQ_TXF_BURST_NUM, L2CB_TXQ_TXF_BURST_PREF))
+
+
+/* Jumbo packet Threshold for task offload */
+#define REG_TX_TSO_OFFLOAD_THRESH	0x1594 /* In 8-bytes */
+#define TX_TSO_OFFLOAD_THRESH_MASK	0x07FF
+#define MAX_TSO_FRAME_SIZE		(7*1024)
+
+#define	REG_TXF_WATER_MARK		0x1598 /* In 8-bytes */
+#define TXF_WATER_MARK_MASK		0x0FFF
+#define TXF_LOW_WATER_MARK_SHIFT	0
+#define TXF_HIGH_WATER_MARK_SHIFT 	16
+#define TXQ_CTRL_BURST_MODE_EN		0x80000000
+
+#define REG_THRUPUT_MON_CTRL		0x159C
+#define THRUPUT_MON_RATE_MASK		0x3
+#define THRUPUT_MON_RATE_SHIFT		0
+#define THRUPUT_MON_EN			0x80
+
+/* RXQ Control Register */
+#define REG_RXQ_CTRL                	0x15A0
+#define ASPM_THRUPUT_LIMIT_MASK		0x3
+#define ASPM_THRUPUT_LIMIT_SHIFT	0
+#define ASPM_THRUPUT_LIMIT_NO		0x00
+#define ASPM_THRUPUT_LIMIT_1M		0x01
+#define ASPM_THRUPUT_LIMIT_10M		0x02
+#define ASPM_THRUPUT_LIMIT_100M		0x03
+#define IPV6_CHKSUM_CTRL_EN		BIT(7)
+#define RXQ_RFD_BURST_NUM_MASK		0x003F
+#define RXQ_RFD_BURST_NUM_SHIFT		20
+#define RXQ_NUM_RFD_PREF_DEF		8
+#define RSS_MODE_MASK			3UL
+#define RSS_MODE_SHIFT			26
+#define RSS_MODE_DIS			0
+#define RSS_MODE_SQSI			1
+#define RSS_MODE_MQSI			2
+#define RSS_MODE_MQMI			3
+#define RSS_NIP_QUEUE_SEL		BIT(28) /* 0:q0, 1:table */
+#define RRS_HASH_CTRL_EN		BIT(29)
+#define RX_CUT_THRU_EN			BIT(30)
+#define RXQ_CTRL_EN			BIT(31)
+
+#define REG_RFD_FREE_THRESH		0x15A4
+#define RFD_FREE_THRESH_MASK		0x003F
+#define RFD_FREE_HI_THRESH_SHIFT	0
+#define RFD_FREE_LO_THRESH_SHIFT	6
+
+/* RXF flow control register */
+#define REG_RXQ_RXF_PAUSE_THRESH    	0x15A8
+#define RXQ_RXF_PAUSE_TH_HI_SHIFT       0
+#define RXQ_RXF_PAUSE_TH_HI_MASK        0x0FFF
+#define RXQ_RXF_PAUSE_TH_LO_SHIFT       16
+#define RXQ_RXF_PAUSE_TH_LO_MASK        0x0FFF
+
+#define REG_RXD_DMA_CTRL		0x15AC
+#define RXD_DMA_THRESH_MASK		0x0FFF	/* In 8-bytes */
+#define RXD_DMA_THRESH_SHIFT		0
+#define RXD_DMA_DOWN_TIMER_MASK		0xFFFF
+#define RXD_DMA_DOWN_TIMER_SHIFT	16
+
+/* DMA Engine Control Register */
+#define REG_DMA_CTRL			0x15C0
+#define DMA_CTRL_SMB_NOW                BIT(31)
+#define DMA_CTRL_WPEND_CLR              BIT(30)
+#define DMA_CTRL_RPEND_CLR              BIT(29)
+#define DMA_CTRL_WDLY_CNT_MASK          0xFUL
+#define DMA_CTRL_WDLY_CNT_SHIFT         16
+#define DMA_CTRL_WDLY_CNT_DEF           4
+#define DMA_CTRL_RDLY_CNT_MASK          0x1FUL
+#define DMA_CTRL_RDLY_CNT_SHIFT         11
+#define DMA_CTRL_RDLY_CNT_DEF           15
+#define DMA_CTRL_RREQ_PRI_DATA          BIT(10)      /* 0:tpd, 1:data */
+#define DMA_CTRL_WREQ_BLEN_MASK         7UL
+#define DMA_CTRL_WREQ_BLEN_SHIFT        7
+#define DMA_CTRL_RREQ_BLEN_MASK         7UL
+#define DMA_CTRL_RREQ_BLEN_SHIFT        4
+#define L1C_CTRL_DMA_RCB_LEN128         BIT(3)   /* 0:64bytes,1:128bytes */
+#define DMA_CTRL_RORDER_MODE_MASK       7UL
+#define DMA_CTRL_RORDER_MODE_SHIFT      0
+#define DMA_CTRL_RORDER_MODE_OUT        4
+#define DMA_CTRL_RORDER_MODE_ENHANCE    2
+#define DMA_CTRL_RORDER_MODE_IN         1
+
+/* INT-triggle/SMB Control Register */
+#define REG_SMB_STAT_TIMER		0x15C4	/* 2us resolution */
+#define SMB_STAT_TIMER_MASK		0xFFFFFF
+#define REG_TINT_TPD_THRESH             0x15C8 /* tpd th to trig intrrupt */
+
+/* Mail box */
+#define MB_RFDX_PROD_IDX_MASK		0xFFFF
+#define REG_MB_RFD0_PROD_IDX		0x15E0
+#define REG_MB_RFD1_PROD_IDX           0x15E4
+#define REG_MB_RFD2_PROD_IDX           0x15E8
+#define REG_MB_RFD3_PROD_IDX           0x15EC
+
+#define REG_TPD_PRI1_PIDX               0x15F0	/* 16bit,hi-tpd producer idx */
+#define REG_TPD_PRI0_PIDX		0x15F2	/* 16bit,lo-tpd producer idx */
+#define REG_TPD_PRI1_CIDX		0x15F4	/* 16bit,hi-tpd consumer idx */
+#define REG_TPD_PRI0_CIDX		0x15F6	/* 16bit,lo-tpd consumer idx */
+#define REG_TPD_PRI3_PIDX              0x1F18
+#define REG_TPD_PRI2_PIDX              0x1F1A
+#define REG_TPD_PRI3_CIDX              0x1F1C
+#define REG_TPD_PRI2_CIDX              0x1F1E
+
+
+#define REG_MB_RFD01_CONS_IDX		0x15F8
+#define MB_RFD0_CONS_IDX_MASK		0x0000FFFF
+#define MB_RFD1_CONS_IDX_MASK		0xFFFF0000
+#define REG_MB_RFD23_CONS_IDX          0x15FC
+#define MB_RFD2_CONS_IDX_MASK          0x0000FFFF
+#define MB_RFD3_CONS_IDX_MASK          0xFFFF0000
+
+/* Interrupt Status Register */
+#define REG_ISR    			0x1600
+#define ISR_SMB				0x00000001
+#define ISR_TIMER			0x00000002
+/*
+ * Software manual interrupt, for debug. Set when SW_MAN_INT_EN is set
+ * in Table 51 Selene Master Control Register (Offset 0x1400).
+ */
+#define ISR_MANUAL         		0x00000004
+#define ISR_HW_RXF_OV          		0x00000008 /* RXF overflow interrupt */
+#define ISR_RFD0_UR			0x00000010 /* RFD0 under run */
+#define ISR_RFD1_UR			0x00000020
+#define ISR_RFD2_UR			0x00000040
+#define ISR_RFD3_UR			0x00000080
+#define ISR_TXF_UR			0x00000100
+#define ISR_DMAR_TO_RST			0x00000200
+#define ISR_DMAW_TO_RST			0x00000400
+#define ISR_TX_CREDIT			0x00000800
+#define ISR_GPHY			0x00001000
+/* GPHY low power state interrupt */
+#define ISR_GPHY_LPW           		0x00002000
+#define ISR_TXQ_TO_RST			0x00004000
+#define ISR_TX_PKT_0                   0x00008000
+#define ISR_RX_PKT_0			0x00010000
+#define ISR_RX_PKT_1			0x00020000
+#define ISR_RX_PKT_2			0x00040000
+#define ISR_RX_PKT_3			0x00080000
+#define ISR_MAC_RX			0x00100000
+#define ISR_MAC_TX			0x00200000
+#define ISR_UR_DETECTED			0x00400000
+#define ISR_FERR_DETECTED		0x00800000
+#define ISR_NFERR_DETECTED		0x01000000
+#define ISR_CERR_DETECTED		0x02000000
+#define ISR_PHY_LINKDOWN		0x04000000
+#define ISR_TX_PKT_1                   0x10000000
+#define ISR_TX_PKT_2                   0x20000000
+#define ISR_TX_PKT_3                   0x40000000
+#define ISR_DIS_INT			0x80000000
+
+/* Interrupt Mask Register */
+#define REG_IMR				0x1604
+
+#define IMR_NORMAL_MASK		(\
+		ISR_MANUAL	|\
+		ISR_HW_RXF_OV	|\
+		ISR_RFD0_UR	|\
+		ISR_TXF_UR	|\
+		ISR_DMAR_TO_RST	|\
+		ISR_TXQ_TO_RST  |\
+		ISR_DMAW_TO_RST	|\
+		ISR_GPHY	|\
+		ISR_GPHY_LPW    |\
+		ISR_PHY_LINKDOWN)
+
+#define ISR_TX_PKT     (			\
+	ISR_TX_PKT_0    |			\
+	ISR_TX_PKT_1    |			\
+	ISR_TX_PKT_2    |			\
+	ISR_TX_PKT_3)
+
+#define ISR_RX_PKT 	(\
+	ISR_RX_PKT_0    |\
+	ISR_RX_PKT_1    |\
+	ISR_RX_PKT_2    |\
+	ISR_RX_PKT_3)
+
+#define ISR_OVER	(\
+	ISR_RFD0_UR 	|\
+	ISR_RFD1_UR	|\
+	ISR_RFD2_UR	|\
+	ISR_RFD3_UR	|\
+	ISR_HW_RXF_OV	|\
+	ISR_TXF_UR)
+
+#define ISR_ERROR	(\
+	ISR_DMAR_TO_RST	|\
+	ISR_TXQ_TO_RST  |\
+	ISR_DMAW_TO_RST	|\
+	ISR_PHY_LINKDOWN)
+
+#define REG_INT_RETRIG_TIMER		0x1608
+#define INT_RETRIG_TIMER_MASK		0xFFFF
+
+#define REG_MAC_RX_STATUS_BIN 		0x1700
+#define REG_MAC_RX_STATUS_END 		0x175c
+#define REG_MAC_TX_STATUS_BIN 		0x1760
+#define REG_MAC_TX_STATUS_END 		0x17c0
+
+#define REG_CLK_GATING_CTRL		0x1814
+#define CLK_GATING_DMAW_EN		0x0001
+#define CLK_GATING_DMAR_EN		0x0002
+#define CLK_GATING_TXQ_EN		0x0004
+#define CLK_GATING_RXQ_EN		0x0008
+#define CLK_GATING_TXMAC_EN		0x0010
+#define CLK_GATING_RXMAC_EN		0x0020
+
+#define CLK_GATING_EN_ALL	(CLK_GATING_DMAW_EN |\
+				 CLK_GATING_DMAR_EN |\
+				 CLK_GATING_TXQ_EN  |\
+				 CLK_GATING_RXQ_EN  |\
+				 CLK_GATING_TXMAC_EN|\
+				 CLK_GATING_RXMAC_EN)
+
+/* DEBUG ADDR */
+#define REG_DEBUG_DATA0 		0x1900
+#define REG_DEBUG_DATA1 		0x1904
+
+#define REG_MT_MAGIC			0x1F00
+#define REG_MT_MODE			0x1F04
+#define REG_MT_SPEED			0x1F08
+#define REG_MT_VERSION			0x1F0C
+
+#define MT_MAGIC			0xaabb1234
+#define MT_MODE_4Q			BIT(0)
+
+#define L1D_MPW_PHYID1			0xD01C  /* V7 */
+#define L1D_MPW_PHYID2			0xD01D  /* V1-V6 */
+#define L1D_MPW_PHYID3			0xD01E  /* V8 */
+
+
+/* Autoneg Advertisement Register */
+#define ADVERTISE_DEFAULT_CAP \
+	(ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)
+
+/* 1000BASE-T Control Register */
+#define GIGA_CR_1000T_REPEATER_DTE	0x0400  /* 1=Repeater/switch device port 0=DTE device */
+
+#define GIGA_CR_1000T_MS_VALUE		0x0800  /* 1=Configure PHY as Master 0=Configure PHY as Slave */
+#define GIGA_CR_1000T_MS_ENABLE		0x1000  /* 1=Master/Slave manual config value 0=Automatic Master/Slave config */
+#define GIGA_CR_1000T_TEST_MODE_NORMAL	0x0000  /* Normal Operation */
+#define GIGA_CR_1000T_TEST_MODE_1	0x2000  /* Transmit Waveform test */
+#define GIGA_CR_1000T_TEST_MODE_2	0x4000  /* Master Transmit Jitter test */
+#define GIGA_CR_1000T_TEST_MODE_3	0x6000  /* Slave Transmit Jitter test */
+#define GIGA_CR_1000T_TEST_MODE_4	0x8000	/* Transmitter Distortion test */
+#define GIGA_CR_1000T_SPEED_MASK	0x0300
+#define GIGA_CR_1000T_DEFAULT_CAP	0x0300
+
+/* PHY Specific Status Register */
+#define MII_GIGA_PSSR			0x11
+#define GIGA_PSSR_SPD_DPLX_RESOLVED	0x0800  /* 1=Speed & Duplex resolved */
+#define GIGA_PSSR_DPLX			0x2000  /* 1=Duplex 0=Half Duplex */
+#define GIGA_PSSR_SPEED			0xC000  /* Speed, bits 14:15 */
+#define GIGA_PSSR_10MBS			0x0000  /* 00=10Mbs */
+#define GIGA_PSSR_100MBS		0x4000  /* 01=100Mbs */
+#define GIGA_PSSR_1000MBS		0x8000  /* 10=1000Mbs */
+
+/* PHY Interrupt Enable Register */
+#define MII_IER				0x12
+#define IER_LINK_UP			0x0400
+#define IER_LINK_DOWN			0x0800
+
+/* PHY Interrupt Status Register */
+#define MII_ISR				0x13
+#define ISR_LINK_UP			0x0400
+#define ISR_LINK_DOWN			0x0800
+
+/* Cable-Detect-Test Control Register */
+#define MII_CDTC			0x16
+#define CDTC_EN_OFF			0   /* sc */
+#define CDTC_EN_BITS			1
+#define CDTC_PAIR_OFF			8
+#define CDTC_PAIR_BIT			2
+
+/* Cable-Detect-Test Status Register */
+#define MII_CDTS			0x1C
+#define CDTS_STATUS_OFF			8
+#define CDTS_STATUS_BITS		2
+#define CDTS_STATUS_NORMAL		0
+#define CDTS_STATUS_SHORT		1
+#define CDTS_STATUS_OPEN		2
+#define CDTS_STATUS_INVALID		3
+
+#define MII_DBG_ADDR			0x1D
+#define MII_DBG_DATA			0x1E
+
+/***************************** debug port *************************************/
+
+#define MIIDBG_ANACTRL                  0x00
+#define ANACTRL_CLK125M_DELAY_EN        0x8000
+#define ANACTRL_VCO_FAST                0x4000
+#define ANACTRL_VCO_SLOW                0x2000
+#define ANACTRL_AFE_MODE_EN             0x1000
+#define ANACTRL_LCKDET_PHY              0x800
+#define ANACTRL_LCKDET_EN               0x400
+#define ANACTRL_OEN_125M                0x200
+#define ANACTRL_HBIAS_EN                0x100
+#define ANACTRL_HB_EN                   0x80
+#define ANACTRL_SEL_HSP                 0x40
+#define ANACTRL_CLASSA_EN               0x20
+#define ANACTRL_MANUSWON_SWR_MASK       3U
+#define ANACTRL_MANUSWON_SWR_SHIFT      2
+#define ANACTRL_MANUSWON_SWR_2V         0
+#define ANACTRL_MANUSWON_SWR_1P9V       1
+#define ANACTRL_MANUSWON_SWR_1P8V       2
+#define ANACTRL_MANUSWON_SWR_1P7V       3
+#define ANACTRL_MANUSWON_BW3_4M         0x2
+#define ANACTRL_RESTART_CAL             0x1
+#define ANACTRL_DEF                     0x02EF
+
+#define MIIDBG_SYSMODCTRL               0x04
+#define SYSMODCTRL_IECHOADJ_PFMH_PHY    0x8000
+#define SYSMODCTRL_IECHOADJ_BIASGEN     0x4000
+#define SYSMODCTRL_IECHOADJ_PFML_PHY    0x2000
+#define SYSMODCTRL_IECHOADJ_PS_MASK     3U
+#define SYSMODCTRL_IECHOADJ_PS_SHIFT    10
+#define SYSMODCTRL_IECHOADJ_PS_40       3
+#define SYSMODCTRL_IECHOADJ_PS_20       2
+#define SYSMODCTRL_IECHOADJ_PS_0        1
+#define SYSMODCTRL_IECHOADJ_10BT_100MV  0x40 /* 1:100mv, 0:200mv */
+#define SYSMODCTRL_IECHOADJ_HLFAP_MASK  3U
+#define SYSMODCTRL_IECHOADJ_HLFAP_SHIFT 4
+#define SYSMODCTRL_IECHOADJ_VDFULBW     0x8
+#define SYSMODCTRL_IECHOADJ_VDBIASHLF   0x4
+#define SYSMODCTRL_IECHOADJ_VDAMPHLF    0x2
+#define SYSMODCTRL_IECHOADJ_VDLANSW     0x1
+#define SYSMODCTRL_IECHOADJ_DEF         0x88BB /* ???? */
+
+/* for l1d & l2cb */
+#define SYSMODCTRL_IECHOADJ_CUR_ADD     0x8000
+#define SYSMODCTRL_IECHOADJ_CUR_MASK    7U
+#define SYSMODCTRL_IECHOADJ_CUR_SHIFT   12
+#define SYSMODCTRL_IECHOADJ_VOL_MASK    0xFU
+#define SYSMODCTRL_IECHOADJ_VOL_SHIFT   8
+#define SYSMODCTRL_IECHOADJ_VOL_17ALL   3
+#define SYSMODCTRL_IECHOADJ_VOL_100M15  1
+#define SYSMODCTRL_IECHOADJ_VOL_10M17   0
+#define SYSMODCTRL_IECHOADJ_BIAS1_MASK  0xFU
+#define SYSMODCTRL_IECHOADJ_BIAS1_SHIFT 4
+#define SYSMODCTRL_IECHOADJ_BIAS2_MASK  0xFU
+#define SYSMODCTRL_IECHOADJ_BIAS2_SHIFT 0
+#define L1D_SYSMODCTRL_IECHOADJ_DEF     0x4FBB
+
+#define MIIDBG_SRDSYSMOD                0x05
+#define SRDSYSMOD_LCKDET_EN             0x2000
+#define SRDSYSMOD_PLL_EN                0x800
+#define SRDSYSMOD_SEL_HSP               0x400
+#define SRDSYSMOD_HLFTXDR               0x200
+#define SRDSYSMOD_TXCLK_DELAY_EN        0x100
+#define SRDSYSMOD_TXELECIDLE            0x80
+#define SRDSYSMOD_DEEMP_EN              0x40
+#define SRDSYSMOD_MS_PAD                0x4
+#define SRDSYSMOD_CDR_ADC_VLTG          0x2
+#define SRDSYSMOD_CDR_DAC_1MA           0x1
+#define SRDSYSMOD_DEF                   0x2C46
+
+#define MIIDBG_CFGLPSPD                 0x0A
+#define CFGLPSPD_RSTCNT_MASK            3U
+#define CFGLPSPD_RSTCNT_SHIFT           14
+#define CFGLPSPD_RSTCNT_CLK125SW        0x2000
+
+#define MIIDBG_HIBNEG                   0x0B
+#define HIBNEG_PSHIB_EN                 0x8000
+#define HIBNEG_WAKE_BOTH                0x4000
+#define HIBNEG_ONOFF_ANACHG_SUDEN       0x2000
+#define HIBNEG_HIB_PULSE                0x1000
+#define HIBNEG_GATE_25M_EN              0x800
+#define HIBNEG_RST_80U                  0x400
+#define HIBNEG_RST_TIMER_MASK           3U
+#define HIBNEG_RST_TIMER_SHIFT          8
+#define HIBNEG_GTX_CLK_DELAY_MASK       3U
+#define HIBNEG_GTX_CLK_DELAY_SHIFT      5
+#define HIBNEG_BYPSS_BRKTIMER           0x10
+#define HIBNEG_DEF                      0xBC40
+
+#define MIIDBG_TST10BTCFG               0x12
+#define TST10BTCFG_INTV_TIMER_MASK      3U
+#define TST10BTCFG_INTV_TIMER_SHIFT     14
+#define TST10BTCFG_TRIGER_TIMER_MASK    3U
+#define TST10BTCFG_TRIGER_TIMER_SHIFT   12
+#define TST10BTCFG_DIV_MAN_MLT3_EN      0x800
+#define TST10BTCFG_OFF_DAC_IDLE         0x400
+#define TST10BTCFG_LPBK_DEEP            0x4 /* 1:deep,0:shallow */
+#define TST10BTCFG_DEF                  0x4C04
+
+#define MIIDBG_AZ_ANADECT		0x15
+#define AZ_ANADECT_10BTRX_TH		0x8000
+#define AZ_ANADECT_BOTH_01CHNL		0x4000
+#define AZ_ANADECT_INTV_MASK		0x3FU
+#define AZ_ANADECT_INTV_SHIFT		8
+#define AZ_ANADECT_THRESH_MASK		0xFU
+#define AZ_ANADECT_THRESH_SHIFT		4
+#define AZ_ANADECT_CHNL_MASK		0xFU
+#define AZ_ANADECT_CHNL_SHIFT		0
+#define AZ_ANADECT_DEF			0x3220
+#define AZ_ANADECT_LONG                 0xb210
+
+#define MIIDBG_MSE16DB			0x18	/* l1d */
+#define L1D_MSE16DB_UP			0x05EA
+#define L1D_MSE16DB_DOWN		0x02EA
+
+#define MIIDBG_LEGCYPS                  0x29
+#define LEGCYPS_EN                      0x8000
+#define LEGCYPS_DAC_AMP1000_MASK        7U
+#define LEGCYPS_DAC_AMP1000_SHIFT       12
+#define LEGCYPS_DAC_AMP100_MASK         7U
+#define LEGCYPS_DAC_AMP100_SHIFT        9
+#define LEGCYPS_DAC_AMP10_MASK          7U
+#define LEGCYPS_DAC_AMP10_SHIFT         6
+#define LEGCYPS_UNPLUG_TIMER_MASK       7U
+#define LEGCYPS_UNPLUG_TIMER_SHIFT      3
+#define LEGCYPS_UNPLUG_DECT_EN          0x4
+#define LEGCYPS_ECNC_PS_EN              0x1
+#define L1D_LEGCYPS_DEF                 0x129D
+#define L1C_LEGCYPS_DEF                 0x36DD
+
+#define MIIDBG_TST100BTCFG              0x36
+#define TST100BTCFG_NORMAL_BW_EN        0x8000
+#define TST100BTCFG_BADLNK_BYPASS       0x4000
+#define TST100BTCFG_SHORTCABL_TH_MASK   0x3FU
+#define TST100BTCFG_SHORTCABL_TH_SHIFT  8
+#define TST100BTCFG_LITCH_EN            0x80
+#define TST100BTCFG_VLT_SW              0x40
+#define TST100BTCFG_LONGCABL_TH_MASK    0x3FU
+#define TST100BTCFG_LONGCABL_TH_SHIFT   0
+#define TST100BTCFG_DEF                 0xE12C
+
+#define MIIDBG_VOLT_CTRL                0x3B	/* only for l2cb 1 & 2 */
+#define VOLT_CTRL_CABLE1TH_MASK         0x1FFU
+#define VOLT_CTRL_CABLE1TH_SHIFT        7
+#define VOLT_CTRL_AMPCTRL_MASK          3U
+#define VOLT_CTRL_AMPCTRL_SHIFT         5
+#define VOLT_CTRL_SW_BYPASS             0x10
+#define VOLT_CTRL_SWLOWEST              0x8
+#define VOLT_CTRL_DACAMP10_MASK         7U
+#define VOLT_CTRL_DACAMP10_SHIFT        0
+
+#define MIIDBG_CABLE1TH_DET             0x3E
+#define CABLE1TH_DET_EN                 0x8000
+
+
+/******* dev 3 *********/
+#define MIIEXT_PCS                      3
+
+#define MIIEXT_CLDCTRL3                 0x8003
+#define CLDCTRL3_BP_CABLE1TH_DET_GT     0x8000
+#define CLDCTRL3_AZ_DISAMP              0x1000
+#define L2CB_CLDCTRL3                   0x4D19
+#define L1D_CLDCTRL3                    0xDD19
+
+#define MIIEXT_CLDCTRL6			0x8006
+#define CLDCTRL6_CAB_LEN_MASK		0x1FFU
+#define CLDCTRL6_CAB_LEN_SHIFT          0
+#define CLDCTRL6_CAB_LEN_SHORT          0x50
+
+/********* dev 7 **********/
+#define MIIEXT_ANEG                     7
+
+#define MIIEXT_LOCAL_EEEADV             0x3C
+#define LOCAL_EEEADV_1000BT             0x4
+#define LOCAL_EEEADV_100BT              0x2
+
+#define MIIEXT_REMOTE_EEEADV            0x3D
+#define REMOTE_EEEADV_1000BT            0x4
+#define REMOTE_EEEADV_100BT             0x2
+
+#define MIIEXT_EEE_ANEG                 0x8000
+#define EEE_ANEG_1000M                  0x4
+#define EEE_ANEG_100M                   0x2
+
+#endif /*_ATL1C_HW_H_*/
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
new file mode 100644
index 000000000..6eb86d759
--- /dev/null
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -0,0 +1,2896 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright(c) 2008 - 2009 Atheros Corporation. All rights reserved.
+ *
+ * Derived from Intel e1000 driver
+ * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
+ */
+
+#include "atl1c.h"
+
+char atl1c_driver_name[] = "atl1c";
+
+/*
+ * atl1c_pci_tbl - PCI Device ID Table
+ *
+ * Wildcard entries (PCI_ANY_ID) should come last
+ * Last entry must be all 0s
+ *
+ * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
+ *   Class, Class Mask, private data (not used) }
+ */
+static const struct pci_device_id atl1c_pci_tbl[] = {
+	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L1C)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATTANSIC_L2C)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L2C_B2)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D)},
+	{PCI_DEVICE(PCI_VENDOR_ID_ATTANSIC, PCI_DEVICE_ID_ATHEROS_L1D_2_0)},
+	/* required last entry */
+	{ 0 }
+};
+MODULE_DEVICE_TABLE(pci, atl1c_pci_tbl);
+
+MODULE_AUTHOR("Jie Yang");
+MODULE_AUTHOR("Qualcomm Atheros Inc.");
+MODULE_DESCRIPTION("Qualcomm Atheros 100/1000M Ethernet Network Driver");
+MODULE_LICENSE("GPL");
+
+struct atl1c_qregs {
+	u16 tpd_addr_lo;
+	u16 tpd_prod;
+	u16 tpd_cons;
+	u16 rfd_addr_lo;
+	u16 rrd_addr_lo;
+	u16 rfd_prod;
+	u32 tx_isr;
+	u32 rx_isr;
+};
+
+static struct atl1c_qregs atl1c_qregs[AT_MAX_TRANSMIT_QUEUE] = {
+	{
+		REG_TPD_PRI0_ADDR_LO, REG_TPD_PRI0_PIDX, REG_TPD_PRI0_CIDX,
+		REG_RFD0_HEAD_ADDR_LO, REG_RRD0_HEAD_ADDR_LO,
+		REG_MB_RFD0_PROD_IDX, ISR_TX_PKT_0, ISR_RX_PKT_0
+	},
+	{
+		REG_TPD_PRI1_ADDR_LO, REG_TPD_PRI1_PIDX, REG_TPD_PRI1_CIDX,
+		REG_RFD1_HEAD_ADDR_LO, REG_RRD1_HEAD_ADDR_LO,
+		REG_MB_RFD1_PROD_IDX, ISR_TX_PKT_1, ISR_RX_PKT_1
+	},
+	{
+		REG_TPD_PRI2_ADDR_LO, REG_TPD_PRI2_PIDX, REG_TPD_PRI2_CIDX,
+		REG_RFD2_HEAD_ADDR_LO, REG_RRD2_HEAD_ADDR_LO,
+		REG_MB_RFD2_PROD_IDX, ISR_TX_PKT_2, ISR_RX_PKT_2
+	},
+	{
+		REG_TPD_PRI3_ADDR_LO, REG_TPD_PRI3_PIDX, REG_TPD_PRI3_CIDX,
+		REG_RFD3_HEAD_ADDR_LO, REG_RRD3_HEAD_ADDR_LO,
+		REG_MB_RFD3_PROD_IDX, ISR_TX_PKT_3, ISR_RX_PKT_3
+	},
+};
+
+static int atl1c_stop_mac(struct atl1c_hw *hw);
+static void atl1c_disable_l0s_l1(struct atl1c_hw *hw);
+static void atl1c_set_aspm(struct atl1c_hw *hw, u16 link_speed);
+static void atl1c_start_mac(struct atl1c_adapter *adapter);
+static int atl1c_up(struct atl1c_adapter *adapter);
+static void atl1c_down(struct atl1c_adapter *adapter);
+static int atl1c_reset_mac(struct atl1c_hw *hw);
+static void atl1c_reset_dma_ring(struct atl1c_adapter *adapter);
+static int atl1c_configure(struct atl1c_adapter *adapter);
+static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter, u32 queue,
+				 bool napi_mode);
+
+
+static const u32 atl1c_default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE |
+	NETIF_MSG_LINK | NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP;
+static void atl1c_pcie_patch(struct atl1c_hw *hw)
+{
+	u32 mst_data, data;
+
+	/* pclk sel could switch to 25M */
+	AT_READ_REG(hw, REG_MASTER_CTRL, &mst_data);
+	mst_data &= ~MASTER_CTRL_CLK_SEL_DIS;
+	AT_WRITE_REG(hw, REG_MASTER_CTRL, mst_data);
+
+	/* WoL/PCIE related settings */
+	if (hw->nic_type == athr_l1c || hw->nic_type == athr_l2c) {
+		AT_READ_REG(hw, REG_PCIE_PHYMISC, &data);
+		data |= PCIE_PHYMISC_FORCE_RCV_DET;
+		AT_WRITE_REG(hw, REG_PCIE_PHYMISC, data);
+	} else { /* new dev set bit5 of MASTER */
+		if (!(mst_data & MASTER_CTRL_WAKEN_25M))
+			AT_WRITE_REG(hw, REG_MASTER_CTRL,
+				mst_data | MASTER_CTRL_WAKEN_25M);
+	}
+	/* aspm/PCIE setting only for l2cb 1.0 */
+	if (hw->nic_type == athr_l2c_b && hw->revision_id == L2CB_V10) {
+		AT_READ_REG(hw, REG_PCIE_PHYMISC2, &data);
+		data = FIELD_SETX(data, PCIE_PHYMISC2_CDR_BW,
+			L2CB1_PCIE_PHYMISC2_CDR_BW);
+		data = FIELD_SETX(data, PCIE_PHYMISC2_L0S_TH,
+			L2CB1_PCIE_PHYMISC2_L0S_TH);
+		AT_WRITE_REG(hw, REG_PCIE_PHYMISC2, data);
+		/* extend L1 sync timer */
+		AT_READ_REG(hw, REG_LINK_CTRL, &data);
+		data |= LINK_CTRL_EXT_SYNC;
+		AT_WRITE_REG(hw, REG_LINK_CTRL, data);
+	}
+	/* l2cb 1.x & l1d 1.x */
+	if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d) {
+		AT_READ_REG(hw, REG_PM_CTRL, &data);
+		data |= PM_CTRL_L0S_BUFSRX_EN;
+		AT_WRITE_REG(hw, REG_PM_CTRL, data);
+		/* clear vendor msg */
+		AT_READ_REG(hw, REG_DMA_DBG, &data);
+		AT_WRITE_REG(hw, REG_DMA_DBG, data & ~DMA_DBG_VENDOR_MSG);
+	}
+}
+
+/* FIXME: no need any more ? */
+/*
+ * atl1c_init_pcie - init PCIE module
+ */
+static void atl1c_reset_pcie(struct atl1c_hw *hw, u32 flag)
+{
+	u32 data;
+	u32 pci_cmd;
+	struct pci_dev *pdev = hw->adapter->pdev;
+	int pos;
+
+	AT_READ_REG(hw, PCI_COMMAND, &pci_cmd);
+	pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
+	pci_cmd |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
+		PCI_COMMAND_IO);
+	AT_WRITE_REG(hw, PCI_COMMAND, pci_cmd);
+
+	/*
+	 * Clear any PowerSaveing Settings
+	 */
+	pci_enable_wake(pdev, PCI_D3hot, 0);
+	pci_enable_wake(pdev, PCI_D3cold, 0);
+	/* wol sts read-clear */
+	AT_READ_REG(hw, REG_WOL_CTRL, &data);
+	AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
+
+	/*
+	 * Mask some pcie error bits
+	 */
+	pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_ERR);
+	if (pos) {
+		pci_read_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, &data);
+		data &= ~(PCI_ERR_UNC_DLP | PCI_ERR_UNC_FCP);
+		pci_write_config_dword(pdev, pos + PCI_ERR_UNCOR_SEVER, data);
+	}
+	/* clear error status */
+	pcie_capability_write_word(pdev, PCI_EXP_DEVSTA,
+			PCI_EXP_DEVSTA_NFED |
+			PCI_EXP_DEVSTA_FED |
+			PCI_EXP_DEVSTA_CED |
+			PCI_EXP_DEVSTA_URD);
+
+	AT_READ_REG(hw, REG_LTSSM_ID_CTRL, &data);
+	data &= ~LTSSM_ID_EN_WRO;
+	AT_WRITE_REG(hw, REG_LTSSM_ID_CTRL, data);
+
+	atl1c_pcie_patch(hw);
+	if (flag & ATL1C_PCIE_L0S_L1_DISABLE)
+		atl1c_disable_l0s_l1(hw);
+
+	msleep(5);
+}
+
+/**
+ * atl1c_irq_enable - Enable default interrupt generation settings
+ * @adapter: board private structure
+ */
+static inline void atl1c_irq_enable(struct atl1c_adapter *adapter)
+{
+	if (likely(atomic_dec_and_test(&adapter->irq_sem))) {
+		AT_WRITE_REG(&adapter->hw, REG_ISR, 0x7FFFFFFF);
+		AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask);
+		AT_WRITE_FLUSH(&adapter->hw);
+	}
+}
+
+/**
+ * atl1c_irq_disable - Mask off interrupt generation on the NIC
+ * @adapter: board private structure
+ */
+static inline void atl1c_irq_disable(struct atl1c_adapter *adapter)
+{
+	atomic_inc(&adapter->irq_sem);
+	AT_WRITE_REG(&adapter->hw, REG_IMR, 0);
+	AT_WRITE_REG(&adapter->hw, REG_ISR, ISR_DIS_INT);
+	AT_WRITE_FLUSH(&adapter->hw);
+	synchronize_irq(adapter->pdev->irq);
+}
+
+/**
+ * atl1c_irq_reset - reset interrupt confiure on the NIC
+ * @adapter: board private structure
+ */
+static inline void atl1c_irq_reset(struct atl1c_adapter *adapter)
+{
+	atomic_set(&adapter->irq_sem, 1);
+	atl1c_irq_enable(adapter);
+}
+
+/*
+ * atl1c_wait_until_idle - wait up to AT_HW_MAX_IDLE_DELAY reads
+ * of the idle status register until the device is actually idle
+ */
+static u32 atl1c_wait_until_idle(struct atl1c_hw *hw, u32 modu_ctrl)
+{
+	int timeout;
+	u32 data;
+
+	for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) {
+		AT_READ_REG(hw, REG_IDLE_STATUS, &data);
+		if ((data & modu_ctrl) == 0)
+			return 0;
+		msleep(1);
+	}
+	return data;
+}
+
+/**
+ * atl1c_phy_config - Timer Call-back
+ * @t: timer list containing pointer to netdev cast into an unsigned long
+ */
+static void atl1c_phy_config(struct timer_list *t)
+{
+	struct atl1c_adapter *adapter = from_timer(adapter, t,
+						   phy_config_timer);
+	struct atl1c_hw *hw = &adapter->hw;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->mdio_lock, flags);
+	atl1c_restart_autoneg(hw);
+	spin_unlock_irqrestore(&adapter->mdio_lock, flags);
+}
+
+void atl1c_reinit_locked(struct atl1c_adapter *adapter)
+{
+	atl1c_down(adapter);
+	atl1c_up(adapter);
+	clear_bit(__AT_RESETTING, &adapter->flags);
+}
+
+static void atl1c_check_link_status(struct atl1c_adapter *adapter)
+{
+	struct atl1c_hw *hw = &adapter->hw;
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev    *pdev   = adapter->pdev;
+	int err;
+	unsigned long flags;
+	u16 speed, duplex;
+	bool link;
+
+	spin_lock_irqsave(&adapter->mdio_lock, flags);
+	link = atl1c_get_link_status(hw);
+	spin_unlock_irqrestore(&adapter->mdio_lock, flags);
+
+	if (!link) {
+		/* link down */
+		netif_carrier_off(netdev);
+		hw->hibernate = true;
+		if (atl1c_reset_mac(hw) != 0)
+			if (netif_msg_hw(adapter))
+				dev_warn(&pdev->dev, "reset mac failed\n");
+		atl1c_set_aspm(hw, SPEED_0);
+		atl1c_post_phy_linkchg(hw, SPEED_0);
+		atl1c_reset_dma_ring(adapter);
+		atl1c_configure(adapter);
+	} else {
+		/* Link Up */
+		hw->hibernate = false;
+		spin_lock_irqsave(&adapter->mdio_lock, flags);
+		err = atl1c_get_speed_and_duplex(hw, &speed, &duplex);
+		spin_unlock_irqrestore(&adapter->mdio_lock, flags);
+		if (unlikely(err))
+			return;
+		/* link result is our setting */
+		if (adapter->link_speed != speed ||
+		    adapter->link_duplex != duplex) {
+			adapter->link_speed  = speed;
+			adapter->link_duplex = duplex;
+			atl1c_set_aspm(hw, speed);
+			atl1c_post_phy_linkchg(hw, speed);
+			atl1c_start_mac(adapter);
+			if (netif_msg_link(adapter))
+				dev_info(&pdev->dev,
+					"%s: %s NIC Link is Up<%d Mbps %s>\n",
+					atl1c_driver_name, netdev->name,
+					adapter->link_speed,
+					adapter->link_duplex == FULL_DUPLEX ?
+					"Full Duplex" : "Half Duplex");
+		}
+		if (!netif_carrier_ok(netdev))
+			netif_carrier_on(netdev);
+	}
+}
+
+static void atl1c_link_chg_event(struct atl1c_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	struct pci_dev    *pdev   = adapter->pdev;
+	bool link;
+
+	spin_lock(&adapter->mdio_lock);
+	link = atl1c_get_link_status(&adapter->hw);
+	spin_unlock(&adapter->mdio_lock);
+	/* notify upper layer link down ASAP */
+	if (!link) {
+		if (netif_carrier_ok(netdev)) {
+			/* old link state: Up */
+			netif_carrier_off(netdev);
+			if (netif_msg_link(adapter))
+				dev_info(&pdev->dev,
+					"%s: %s NIC Link is Down\n",
+					atl1c_driver_name, netdev->name);
+			adapter->link_speed = SPEED_0;
+		}
+	}
+
+	set_bit(ATL1C_WORK_EVENT_LINK_CHANGE, &adapter->work_event);
+	schedule_work(&adapter->common_task);
+}
+
+static void atl1c_common_task(struct work_struct *work)
+{
+	struct atl1c_adapter *adapter;
+	struct net_device *netdev;
+
+	adapter = container_of(work, struct atl1c_adapter, common_task);
+	netdev = adapter->netdev;
+
+	if (test_bit(__AT_DOWN, &adapter->flags))
+		return;
+
+	if (test_and_clear_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event)) {
+		netif_device_detach(netdev);
+		atl1c_down(adapter);
+		atl1c_up(adapter);
+		netif_device_attach(netdev);
+	}
+
+	if (test_and_clear_bit(ATL1C_WORK_EVENT_LINK_CHANGE,
+		&adapter->work_event)) {
+		atl1c_irq_disable(adapter);
+		atl1c_check_link_status(adapter);
+		atl1c_irq_enable(adapter);
+	}
+}
+
+
+static void atl1c_del_timer(struct atl1c_adapter *adapter)
+{
+	del_timer_sync(&adapter->phy_config_timer);
+}
+
+
+/**
+ * atl1c_tx_timeout - Respond to a Tx Hang
+ * @netdev: network interface device structure
+ * @txqueue: index of hanging tx queue
+ */
+static void atl1c_tx_timeout(struct net_device *netdev, unsigned int txqueue)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	/* Do the reset outside of interrupt context */
+	set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event);
+	schedule_work(&adapter->common_task);
+}
+
+/**
+ * atl1c_set_multi - Multicast and Promiscuous mode set
+ * @netdev: network interface device structure
+ *
+ * The set_multi entry point is called whenever the multicast address
+ * list or the network interface flags are updated.  This routine is
+ * responsible for configuring the hardware for proper multicast,
+ * promiscuous mode, and all-multi behavior.
+ */
+static void atl1c_set_multi(struct net_device *netdev)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct atl1c_hw *hw = &adapter->hw;
+	struct netdev_hw_addr *ha;
+	u32 mac_ctrl_data;
+	u32 hash_value;
+
+	/* Check for Promiscuous and All Multicast modes */
+	AT_READ_REG(hw, REG_MAC_CTRL, &mac_ctrl_data);
+
+	if (netdev->flags & IFF_PROMISC) {
+		mac_ctrl_data |= MAC_CTRL_PROMIS_EN;
+	} else if (netdev->flags & IFF_ALLMULTI) {
+		mac_ctrl_data |= MAC_CTRL_MC_ALL_EN;
+		mac_ctrl_data &= ~MAC_CTRL_PROMIS_EN;
+	} else {
+		mac_ctrl_data &= ~(MAC_CTRL_PROMIS_EN | MAC_CTRL_MC_ALL_EN);
+	}
+
+	AT_WRITE_REG(hw, REG_MAC_CTRL, mac_ctrl_data);
+
+	/* clear the old settings from the multicast hash table */
+	AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0);
+	AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0);
+
+	/* comoute mc addresses' hash value ,and put it into hash table */
+	netdev_for_each_mc_addr(ha, netdev) {
+		hash_value = atl1c_hash_mc_addr(hw, ha->addr);
+		atl1c_hash_set(hw, hash_value);
+	}
+}
+
+static void __atl1c_vlan_mode(netdev_features_t features, u32 *mac_ctrl_data)
+{
+	if (features & NETIF_F_HW_VLAN_CTAG_RX) {
+		/* enable VLAN tag insert/strip */
+		*mac_ctrl_data |= MAC_CTRL_RMV_VLAN;
+	} else {
+		/* disable VLAN tag insert/strip */
+		*mac_ctrl_data &= ~MAC_CTRL_RMV_VLAN;
+	}
+}
+
+static void atl1c_vlan_mode(struct net_device *netdev,
+	netdev_features_t features)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct pci_dev *pdev = adapter->pdev;
+	u32 mac_ctrl_data = 0;
+
+	if (netif_msg_pktdata(adapter))
+		dev_dbg(&pdev->dev, "atl1c_vlan_mode\n");
+
+	atl1c_irq_disable(adapter);
+	AT_READ_REG(&adapter->hw, REG_MAC_CTRL, &mac_ctrl_data);
+	__atl1c_vlan_mode(features, &mac_ctrl_data);
+	AT_WRITE_REG(&adapter->hw, REG_MAC_CTRL, mac_ctrl_data);
+	atl1c_irq_enable(adapter);
+}
+
+static void atl1c_restore_vlan(struct atl1c_adapter *adapter)
+{
+	struct pci_dev *pdev = adapter->pdev;
+
+	if (netif_msg_pktdata(adapter))
+		dev_dbg(&pdev->dev, "atl1c_restore_vlan\n");
+	atl1c_vlan_mode(adapter->netdev, adapter->netdev->features);
+}
+
+/**
+ * atl1c_set_mac_addr - Change the Ethernet Address of the NIC
+ * @netdev: network interface device structure
+ * @p: pointer to an address structure
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int atl1c_set_mac_addr(struct net_device *netdev, void *p)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct sockaddr *addr = p;
+
+	if (!is_valid_ether_addr(addr->sa_data))
+		return -EADDRNOTAVAIL;
+
+	if (netif_running(netdev))
+		return -EBUSY;
+
+	eth_hw_addr_set(netdev, addr->sa_data);
+	memcpy(adapter->hw.mac_addr, addr->sa_data, netdev->addr_len);
+
+	atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.mac_addr);
+
+	return 0;
+}
+
+static void atl1c_set_rxbufsize(struct atl1c_adapter *adapter,
+				struct net_device *dev)
+{
+	int mtu = dev->mtu;
+
+	adapter->rx_buffer_len = mtu > AT_RX_BUF_SIZE ?
+		roundup(mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN, 8) : AT_RX_BUF_SIZE;
+}
+
+static netdev_features_t atl1c_fix_features(struct net_device *netdev,
+	netdev_features_t features)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct atl1c_hw *hw = &adapter->hw;
+
+	/*
+	 * Since there is no support for separate rx/tx vlan accel
+	 * enable/disable make sure tx flag is always in same state as rx.
+	 */
+	if (features & NETIF_F_HW_VLAN_CTAG_RX)
+		features |= NETIF_F_HW_VLAN_CTAG_TX;
+	else
+		features &= ~NETIF_F_HW_VLAN_CTAG_TX;
+
+	if (hw->nic_type != athr_mt) {
+		if (netdev->mtu > MAX_TSO_FRAME_SIZE)
+			features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
+	}
+
+	return features;
+}
+
+static int atl1c_set_features(struct net_device *netdev,
+	netdev_features_t features)
+{
+	netdev_features_t changed = netdev->features ^ features;
+
+	if (changed & NETIF_F_HW_VLAN_CTAG_RX)
+		atl1c_vlan_mode(netdev, features);
+
+	return 0;
+}
+
+static void atl1c_set_max_mtu(struct net_device *netdev)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct atl1c_hw *hw = &adapter->hw;
+
+	switch (hw->nic_type) {
+	/* These (GbE) devices support jumbo packets, max_mtu 6122 */
+	case athr_l1c:
+	case athr_l1d:
+	case athr_l1d_2:
+		netdev->max_mtu = MAX_JUMBO_FRAME_SIZE -
+			(ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
+		break;
+	case athr_mt:
+		netdev->max_mtu = 9500;
+		break;
+		/* The 10/100 devices don't support jumbo packets, max_mtu 1500 */
+	default:
+		netdev->max_mtu = ETH_DATA_LEN;
+		break;
+	}
+}
+
+/**
+ * atl1c_change_mtu - Change the Maximum Transfer Unit
+ * @netdev: network interface device structure
+ * @new_mtu: new value for maximum frame size
+ *
+ * Returns 0 on success, negative on failure
+ */
+static int atl1c_change_mtu(struct net_device *netdev, int new_mtu)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	/* set MTU */
+	if (netif_running(netdev)) {
+		while (test_and_set_bit(__AT_RESETTING, &adapter->flags))
+			msleep(1);
+		netdev->mtu = new_mtu;
+		adapter->hw.max_frame_size = new_mtu;
+		atl1c_set_rxbufsize(adapter, netdev);
+		atl1c_down(adapter);
+		netdev_update_features(netdev);
+		atl1c_up(adapter);
+		clear_bit(__AT_RESETTING, &adapter->flags);
+	}
+	return 0;
+}
+
+/*
+ *  caller should hold mdio_lock
+ */
+static int atl1c_mdio_read(struct net_device *netdev, int phy_id, int reg_num)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	u16 result;
+
+	atl1c_read_phy_reg(&adapter->hw, reg_num, &result);
+	return result;
+}
+
+static void atl1c_mdio_write(struct net_device *netdev, int phy_id,
+			     int reg_num, int val)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	atl1c_write_phy_reg(&adapter->hw, reg_num, val);
+}
+
+static int atl1c_mii_ioctl(struct net_device *netdev,
+			   struct ifreq *ifr, int cmd)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct pci_dev *pdev = adapter->pdev;
+	struct mii_ioctl_data *data = if_mii(ifr);
+	unsigned long flags;
+	int retval = 0;
+
+	if (!netif_running(netdev))
+		return -EINVAL;
+
+	spin_lock_irqsave(&adapter->mdio_lock, flags);
+	switch (cmd) {
+	case SIOCGMIIPHY:
+		data->phy_id = 0;
+		break;
+
+	case SIOCGMIIREG:
+		if (atl1c_read_phy_reg(&adapter->hw, data->reg_num & 0x1F,
+				    &data->val_out)) {
+			retval = -EIO;
+			goto out;
+		}
+		break;
+
+	case SIOCSMIIREG:
+		if (data->reg_num & ~(0x1F)) {
+			retval = -EFAULT;
+			goto out;
+		}
+
+		dev_dbg(&pdev->dev, "<atl1c_mii_ioctl> write %x %x",
+				data->reg_num, data->val_in);
+		if (atl1c_write_phy_reg(&adapter->hw,
+				     data->reg_num, data->val_in)) {
+			retval = -EIO;
+			goto out;
+		}
+		break;
+
+	default:
+		retval = -EOPNOTSUPP;
+		break;
+	}
+out:
+	spin_unlock_irqrestore(&adapter->mdio_lock, flags);
+	return retval;
+}
+
+static int atl1c_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+	switch (cmd) {
+	case SIOCGMIIPHY:
+	case SIOCGMIIREG:
+	case SIOCSMIIREG:
+		return atl1c_mii_ioctl(netdev, ifr, cmd);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+/**
+ * atl1c_alloc_queues - Allocate memory for all rings
+ * @adapter: board private structure to initialize
+ *
+ */
+static int atl1c_alloc_queues(struct atl1c_adapter *adapter)
+{
+	return 0;
+}
+
+static enum atl1c_nic_type atl1c_get_mac_type(struct pci_dev *pdev,
+					      u8 __iomem *hw_addr)
+{
+	switch (pdev->device) {
+	case PCI_DEVICE_ID_ATTANSIC_L2C:
+		return athr_l2c;
+	case PCI_DEVICE_ID_ATTANSIC_L1C:
+		return athr_l1c;
+	case PCI_DEVICE_ID_ATHEROS_L2C_B:
+		return athr_l2c_b;
+	case PCI_DEVICE_ID_ATHEROS_L2C_B2:
+		return athr_l2c_b2;
+	case PCI_DEVICE_ID_ATHEROS_L1D:
+		return athr_l1d;
+	case PCI_DEVICE_ID_ATHEROS_L1D_2_0:
+		if (readl(hw_addr + REG_MT_MAGIC) == MT_MAGIC)
+			return athr_mt;
+		return athr_l1d_2;
+	default:
+		return athr_l1c;
+	}
+}
+
+static int atl1c_setup_mac_funcs(struct atl1c_hw *hw)
+{
+	u32 link_ctrl_data;
+
+	AT_READ_REG(hw, REG_LINK_CTRL, &link_ctrl_data);
+
+	hw->ctrl_flags = ATL1C_INTR_MODRT_ENABLE  |
+			 ATL1C_TXQ_MODE_ENHANCE;
+	hw->ctrl_flags |= ATL1C_ASPM_L0S_SUPPORT |
+			  ATL1C_ASPM_L1_SUPPORT;
+	hw->ctrl_flags |= ATL1C_ASPM_CTRL_MON;
+
+	if (hw->nic_type == athr_l1c ||
+	    hw->nic_type == athr_l1d ||
+	    hw->nic_type == athr_l1d_2)
+		hw->link_cap_flags |= ATL1C_LINK_CAP_1000M;
+	return 0;
+}
+
+struct atl1c_platform_patch {
+	u16 pci_did;
+	u8  pci_revid;
+	u16 subsystem_vid;
+	u16 subsystem_did;
+	u32 patch_flag;
+#define ATL1C_LINK_PATCH	0x1
+};
+static const struct atl1c_platform_patch plats[] = {
+{0x2060, 0xC1, 0x1019, 0x8152, 0x1},
+{0x2060, 0xC1, 0x1019, 0x2060, 0x1},
+{0x2060, 0xC1, 0x1019, 0xE000, 0x1},
+{0x2062, 0xC0, 0x1019, 0x8152, 0x1},
+{0x2062, 0xC0, 0x1019, 0x2062, 0x1},
+{0x2062, 0xC0, 0x1458, 0xE000, 0x1},
+{0x2062, 0xC1, 0x1019, 0x8152, 0x1},
+{0x2062, 0xC1, 0x1019, 0x2062, 0x1},
+{0x2062, 0xC1, 0x1458, 0xE000, 0x1},
+{0x2062, 0xC1, 0x1565, 0x2802, 0x1},
+{0x2062, 0xC1, 0x1565, 0x2801, 0x1},
+{0x1073, 0xC0, 0x1019, 0x8151, 0x1},
+{0x1073, 0xC0, 0x1019, 0x1073, 0x1},
+{0x1073, 0xC0, 0x1458, 0xE000, 0x1},
+{0x1083, 0xC0, 0x1458, 0xE000, 0x1},
+{0x1083, 0xC0, 0x1019, 0x8151, 0x1},
+{0x1083, 0xC0, 0x1019, 0x1083, 0x1},
+{0x1083, 0xC0, 0x1462, 0x7680, 0x1},
+{0x1083, 0xC0, 0x1565, 0x2803, 0x1},
+{0},
+};
+
+static void atl1c_patch_assign(struct atl1c_hw *hw)
+{
+	struct pci_dev	*pdev = hw->adapter->pdev;
+	u32 misc_ctrl;
+	int i = 0;
+
+	hw->msi_lnkpatch = false;
+
+	while (plats[i].pci_did != 0) {
+		if (plats[i].pci_did == hw->device_id &&
+		    plats[i].pci_revid == hw->revision_id &&
+		    plats[i].subsystem_vid == hw->subsystem_vendor_id &&
+		    plats[i].subsystem_did == hw->subsystem_id) {
+			if (plats[i].patch_flag & ATL1C_LINK_PATCH)
+				hw->msi_lnkpatch = true;
+		}
+		i++;
+	}
+
+	if (hw->device_id == PCI_DEVICE_ID_ATHEROS_L2C_B2 &&
+	    hw->revision_id == L2CB_V21) {
+		/* config access mode */
+		pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR,
+				       REG_PCIE_DEV_MISC_CTRL);
+		pci_read_config_dword(pdev, REG_PCIE_IND_ACC_DATA, &misc_ctrl);
+		misc_ctrl &= ~0x100;
+		pci_write_config_dword(pdev, REG_PCIE_IND_ACC_ADDR,
+				       REG_PCIE_DEV_MISC_CTRL);
+		pci_write_config_dword(pdev, REG_PCIE_IND_ACC_DATA, misc_ctrl);
+	}
+}
+/**
+ * atl1c_sw_init - Initialize general software structures (struct atl1c_adapter)
+ * @adapter: board private structure to initialize
+ *
+ * atl1c_sw_init initializes the Adapter private data structure.
+ * Fields are initialized based on PCI device information and
+ * OS network device settings (MTU size).
+ */
+static int atl1c_sw_init(struct atl1c_adapter *adapter)
+{
+	struct atl1c_hw *hw   = &adapter->hw;
+	struct pci_dev	*pdev = adapter->pdev;
+	u32 revision;
+	int i;
+
+	adapter->wol = 0;
+	device_set_wakeup_enable(&pdev->dev, false);
+	adapter->link_speed = SPEED_0;
+	adapter->link_duplex = FULL_DUPLEX;
+	adapter->tpd_ring[0].count = 1024;
+	adapter->rfd_ring[0].count = 512;
+
+	hw->vendor_id = pdev->vendor;
+	hw->device_id = pdev->device;
+	hw->subsystem_vendor_id = pdev->subsystem_vendor;
+	hw->subsystem_id = pdev->subsystem_device;
+	pci_read_config_dword(pdev, PCI_CLASS_REVISION, &revision);
+	hw->revision_id = revision & 0xFF;
+	/* before link up, we assume hibernate is true */
+	hw->hibernate = true;
+	hw->media_type = MEDIA_TYPE_AUTO_SENSOR;
+	if (atl1c_setup_mac_funcs(hw) != 0) {
+		dev_err(&pdev->dev, "set mac function pointers failed\n");
+		return -1;
+	}
+	atl1c_patch_assign(hw);
+
+	hw->intr_mask = IMR_NORMAL_MASK;
+	for (i = 0; i < adapter->tx_queue_count; ++i)
+		hw->intr_mask |= atl1c_qregs[i].tx_isr;
+	for (i = 0; i < adapter->rx_queue_count; ++i)
+		hw->intr_mask |= atl1c_qregs[i].rx_isr;
+	hw->phy_configured = false;
+	hw->preamble_len = 7;
+	hw->max_frame_size = adapter->netdev->mtu;
+	hw->autoneg_advertised = ADVERTISED_Autoneg;
+	hw->indirect_tab = 0xE4E4E4E4;
+	hw->base_cpu = 0;
+
+	hw->ict = 50000;		/* 100ms */
+	hw->smb_timer = 200000;	  	/* 400ms */
+	hw->rx_imt = 200;
+	hw->tx_imt = 1000;
+
+	hw->tpd_burst = 5;
+	hw->rfd_burst = 8;
+	hw->dma_order = atl1c_dma_ord_out;
+	hw->dmar_block = atl1c_dma_req_1024;
+
+	if (atl1c_alloc_queues(adapter)) {
+		dev_err(&pdev->dev, "Unable to allocate memory for queues\n");
+		return -ENOMEM;
+	}
+	/* TODO */
+	atl1c_set_rxbufsize(adapter, adapter->netdev);
+	atomic_set(&adapter->irq_sem, 1);
+	spin_lock_init(&adapter->mdio_lock);
+	spin_lock_init(&adapter->hw.intr_mask_lock);
+	set_bit(__AT_DOWN, &adapter->flags);
+
+	return 0;
+}
+
+static inline void atl1c_clean_buffer(struct pci_dev *pdev,
+				struct atl1c_buffer *buffer_info)
+{
+	u16 pci_driection;
+	if (buffer_info->flags & ATL1C_BUFFER_FREE)
+		return;
+	if (buffer_info->dma) {
+		if (buffer_info->flags & ATL1C_PCIMAP_FROMDEVICE)
+			pci_driection = DMA_FROM_DEVICE;
+		else
+			pci_driection = DMA_TO_DEVICE;
+
+		if (buffer_info->flags & ATL1C_PCIMAP_SINGLE)
+			dma_unmap_single(&pdev->dev, buffer_info->dma,
+					 buffer_info->length, pci_driection);
+		else if (buffer_info->flags & ATL1C_PCIMAP_PAGE)
+			dma_unmap_page(&pdev->dev, buffer_info->dma,
+				       buffer_info->length, pci_driection);
+	}
+	if (buffer_info->skb)
+		dev_consume_skb_any(buffer_info->skb);
+	buffer_info->dma = 0;
+	buffer_info->skb = NULL;
+	ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE);
+}
+/**
+ * atl1c_clean_tx_ring - Free Tx-skb
+ * @adapter: board private structure
+ * @queue: idx of transmit queue
+ */
+static void atl1c_clean_tx_ring(struct atl1c_adapter *adapter,
+				u32 queue)
+{
+	struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[queue];
+	struct atl1c_buffer *buffer_info;
+	struct pci_dev *pdev = adapter->pdev;
+	u16 index, ring_count;
+
+	ring_count = tpd_ring->count;
+	for (index = 0; index < ring_count; index++) {
+		buffer_info = &tpd_ring->buffer_info[index];
+		atl1c_clean_buffer(pdev, buffer_info);
+	}
+
+	netdev_tx_reset_queue(netdev_get_tx_queue(adapter->netdev, queue));
+
+	/* Zero out Tx-buffers */
+	memset(tpd_ring->desc, 0, sizeof(struct atl1c_tpd_desc) *
+		ring_count);
+	atomic_set(&tpd_ring->next_to_clean, 0);
+	tpd_ring->next_to_use = 0;
+}
+
+/**
+ * atl1c_clean_rx_ring - Free rx-reservation skbs
+ * @adapter: board private structure
+ * @queue: idx of transmit queue
+ */
+static void atl1c_clean_rx_ring(struct atl1c_adapter *adapter, u32 queue)
+{
+	struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[queue];
+	struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring[queue];
+	struct atl1c_buffer *buffer_info;
+	struct pci_dev *pdev = adapter->pdev;
+	int j;
+
+	for (j = 0; j < rfd_ring->count; j++) {
+		buffer_info = &rfd_ring->buffer_info[j];
+		atl1c_clean_buffer(pdev, buffer_info);
+	}
+	/* zero out the descriptor ring */
+	memset(rfd_ring->desc, 0, rfd_ring->size);
+	rfd_ring->next_to_clean = 0;
+	rfd_ring->next_to_use = 0;
+	rrd_ring->next_to_use = 0;
+	rrd_ring->next_to_clean = 0;
+}
+
+/*
+ * Read / Write Ptr Initialize:
+ */
+static void atl1c_init_ring_ptrs(struct atl1c_adapter *adapter)
+{
+	struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring;
+	struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring;
+	struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring;
+	struct atl1c_buffer *buffer_info;
+	int i, j;
+
+	for (i = 0; i < adapter->tx_queue_count; i++) {
+		tpd_ring[i].next_to_use = 0;
+		atomic_set(&tpd_ring[i].next_to_clean, 0);
+		buffer_info = tpd_ring[i].buffer_info;
+		for (j = 0; j < tpd_ring->count; j++)
+			ATL1C_SET_BUFFER_STATE(&buffer_info[i],
+					       ATL1C_BUFFER_FREE);
+	}
+	for (i = 0; i < adapter->rx_queue_count; i++) {
+		rfd_ring[i].next_to_use = 0;
+		rfd_ring[i].next_to_clean = 0;
+		rrd_ring[i].next_to_use = 0;
+		rrd_ring[i].next_to_clean = 0;
+		for (j = 0; j < rfd_ring[i].count; j++) {
+			buffer_info = &rfd_ring[i].buffer_info[j];
+			ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE);
+		}
+	}
+}
+
+/**
+ * atl1c_free_ring_resources - Free Tx / RX descriptor Resources
+ * @adapter: board private structure
+ *
+ * Free all transmit software resources
+ */
+static void atl1c_free_ring_resources(struct atl1c_adapter *adapter)
+{
+	struct pci_dev *pdev = adapter->pdev;
+
+	dma_free_coherent(&pdev->dev, adapter->ring_header.size,
+			  adapter->ring_header.desc, adapter->ring_header.dma);
+	adapter->ring_header.desc = NULL;
+
+	/* Note: just free tdp_ring.buffer_info,
+	 * it contain rfd_ring.buffer_info, do not double free
+	 */
+	if (adapter->tpd_ring[0].buffer_info) {
+		kfree(adapter->tpd_ring[0].buffer_info);
+		adapter->tpd_ring[0].buffer_info = NULL;
+	}
+}
+
+/**
+ * atl1c_setup_ring_resources - allocate Tx / RX descriptor resources
+ * @adapter: board private structure
+ *
+ * Return 0 on success, negative on failure
+ */
+static int atl1c_setup_ring_resources(struct atl1c_adapter *adapter)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring;
+	struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring;
+	struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring;
+	struct atl1c_ring_header *ring_header = &adapter->ring_header;
+	int tqc = adapter->tx_queue_count;
+	int rqc = adapter->rx_queue_count;
+	int size;
+	int i;
+	int count = 0;
+	u32 offset = 0;
+
+	/* Even though only one tpd queue is actually used, the "high"
+	 * priority tpd queue also gets initialized
+	 */
+	if (tqc == 1)
+		tqc = 2;
+
+	for (i = 1; i < tqc; i++)
+		tpd_ring[i].count = tpd_ring[0].count;
+
+	size = sizeof(struct atl1c_buffer) * (tpd_ring->count * tqc +
+					      rfd_ring->count * rqc);
+	tpd_ring->buffer_info = kzalloc(size, GFP_KERNEL);
+	if (unlikely(!tpd_ring->buffer_info))
+		goto err_nomem;
+
+	for (i = 0; i < tqc; i++) {
+		tpd_ring[i].adapter = adapter;
+		tpd_ring[i].num = i;
+		tpd_ring[i].buffer_info = (tpd_ring->buffer_info + count);
+		count += tpd_ring[i].count;
+	}
+
+	for (i = 0; i < rqc; i++) {
+		rrd_ring[i].adapter = adapter;
+		rrd_ring[i].num = i;
+		rrd_ring[i].count = rfd_ring[0].count;
+		rfd_ring[i].count = rfd_ring[0].count;
+		rfd_ring[i].buffer_info = (tpd_ring->buffer_info + count);
+		count += rfd_ring->count;
+	}
+
+	/*
+	 * real ring DMA buffer
+	 * each ring/block may need up to 8 bytes for alignment, hence the
+	 * additional bytes tacked onto the end.
+	 */
+	ring_header->size =
+		sizeof(struct atl1c_tpd_desc) * tpd_ring->count * tqc +
+		sizeof(struct atl1c_rx_free_desc) * rfd_ring->count * rqc +
+		sizeof(struct atl1c_recv_ret_status) * rfd_ring->count * rqc +
+		8 * 4;
+
+	ring_header->desc = dma_alloc_coherent(&pdev->dev, ring_header->size,
+					       &ring_header->dma, GFP_KERNEL);
+	if (unlikely(!ring_header->desc)) {
+		dev_err(&pdev->dev, "could not get memory for DMA buffer\n");
+		goto err_nomem;
+	}
+	/* init TPD ring */
+
+	tpd_ring[0].dma = roundup(ring_header->dma, 8);
+	offset = tpd_ring[0].dma - ring_header->dma;
+	for (i = 0; i < tqc; i++) {
+		tpd_ring[i].dma = ring_header->dma + offset;
+		tpd_ring[i].desc = (u8 *)ring_header->desc + offset;
+		tpd_ring[i].size =
+			sizeof(struct atl1c_tpd_desc) * tpd_ring[i].count;
+		offset += roundup(tpd_ring[i].size, 8);
+	}
+	for (i = 0; i < rqc; i++) {
+		/* init RFD ring */
+		rfd_ring[i].dma = ring_header->dma + offset;
+		rfd_ring[i].desc = (u8 *)ring_header->desc + offset;
+		rfd_ring[i].size = sizeof(struct atl1c_rx_free_desc) *
+			rfd_ring[i].count;
+		offset += roundup(rfd_ring[i].size, 8);
+
+		/* init RRD ring */
+		rrd_ring[i].dma = ring_header->dma + offset;
+		rrd_ring[i].desc = (u8 *)ring_header->desc + offset;
+		rrd_ring[i].size = sizeof(struct atl1c_recv_ret_status) *
+			rrd_ring[i].count;
+		offset += roundup(rrd_ring[i].size, 8);
+	}
+
+	return 0;
+
+err_nomem:
+	kfree(tpd_ring->buffer_info);
+	return -ENOMEM;
+}
+
+static void atl1c_configure_des_ring(struct atl1c_adapter *adapter)
+{
+	struct atl1c_hw *hw = &adapter->hw;
+	struct atl1c_rfd_ring *rfd_ring = adapter->rfd_ring;
+	struct atl1c_rrd_ring *rrd_ring = adapter->rrd_ring;
+	struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring;
+	int i;
+	int tx_queue_count = adapter->tx_queue_count;
+
+	if (tx_queue_count == 1)
+		tx_queue_count = 2;
+
+	/* TPD */
+	AT_WRITE_REG(hw, REG_TX_BASE_ADDR_HI,
+		     (u32)((tpd_ring[0].dma & AT_DMA_HI_ADDR_MASK) >> 32));
+	/* just enable normal priority TX queue */
+	for (i = 0; i < tx_queue_count; i++) {
+		AT_WRITE_REG(hw, atl1c_qregs[i].tpd_addr_lo,
+			     (u32)(tpd_ring[i].dma & AT_DMA_LO_ADDR_MASK));
+	}
+	AT_WRITE_REG(hw, REG_TPD_RING_SIZE,
+			(u32)(tpd_ring[0].count & TPD_RING_SIZE_MASK));
+
+
+	/* RFD */
+	AT_WRITE_REG(hw, REG_RX_BASE_ADDR_HI,
+		     (u32)((rfd_ring->dma & AT_DMA_HI_ADDR_MASK) >> 32));
+	for (i = 0; i < adapter->rx_queue_count; i++) {
+		AT_WRITE_REG(hw, atl1c_qregs[i].rfd_addr_lo,
+			     (u32)(rfd_ring[i].dma & AT_DMA_LO_ADDR_MASK));
+	}
+
+	AT_WRITE_REG(hw, REG_RFD_RING_SIZE,
+			rfd_ring->count & RFD_RING_SIZE_MASK);
+	AT_WRITE_REG(hw, REG_RX_BUF_SIZE,
+			adapter->rx_buffer_len & RX_BUF_SIZE_MASK);
+
+	/* RRD */
+	for (i = 0; i < adapter->rx_queue_count; i++) {
+		AT_WRITE_REG(hw, atl1c_qregs[i].rrd_addr_lo,
+			     (u32)(rrd_ring[i].dma & AT_DMA_LO_ADDR_MASK));
+	}
+	AT_WRITE_REG(hw, REG_RRD_RING_SIZE,
+			(rrd_ring->count & RRD_RING_SIZE_MASK));
+
+	if (hw->nic_type == athr_l2c_b) {
+		AT_WRITE_REG(hw, REG_SRAM_RXF_LEN, 0x02a0L);
+		AT_WRITE_REG(hw, REG_SRAM_TXF_LEN, 0x0100L);
+		AT_WRITE_REG(hw, REG_SRAM_RXF_ADDR, 0x029f0000L);
+		AT_WRITE_REG(hw, REG_SRAM_RFD0_INFO, 0x02bf02a0L);
+		AT_WRITE_REG(hw, REG_SRAM_TXF_ADDR, 0x03bf02c0L);
+		AT_WRITE_REG(hw, REG_SRAM_TRD_ADDR, 0x03df03c0L);
+		AT_WRITE_REG(hw, REG_TXF_WATER_MARK, 0);	/* TX watermark, to enter l1 state.*/
+		AT_WRITE_REG(hw, REG_RXD_DMA_CTRL, 0);		/* RXD threshold.*/
+	}
+	/* Load all of base address above */
+	AT_WRITE_REG(hw, REG_LOAD_PTR, 1);
+}
+
+static void atl1c_configure_tx(struct atl1c_adapter *adapter)
+{
+	struct atl1c_hw *hw = &adapter->hw;
+	int max_pay_load;
+	u16 tx_offload_thresh;
+	u32 txq_ctrl_data;
+
+	tx_offload_thresh = MAX_TSO_FRAME_SIZE;
+	AT_WRITE_REG(hw, REG_TX_TSO_OFFLOAD_THRESH,
+		(tx_offload_thresh >> 3) & TX_TSO_OFFLOAD_THRESH_MASK);
+	max_pay_load = pcie_get_readrq(adapter->pdev) >> 8;
+	hw->dmar_block = min_t(u32, max_pay_load, hw->dmar_block);
+	/*
+	 * if BIOS had changed the dam-read-max-length to an invalid value,
+	 * restore it to default value
+	 */
+	if (hw->dmar_block < DEVICE_CTRL_MAXRRS_MIN) {
+		pcie_set_readrq(adapter->pdev, 128 << DEVICE_CTRL_MAXRRS_MIN);
+		hw->dmar_block = DEVICE_CTRL_MAXRRS_MIN;
+	}
+	txq_ctrl_data =
+		hw->nic_type == athr_l2c_b || hw->nic_type == athr_l2c_b2 ?
+		L2CB_TXQ_CFGV : L1C_TXQ_CFGV;
+
+	AT_WRITE_REG(hw, REG_TXQ_CTRL, txq_ctrl_data);
+}
+
+static void atl1c_configure_rx(struct atl1c_adapter *adapter)
+{
+	struct atl1c_hw *hw = &adapter->hw;
+	u32 rxq_ctrl_data;
+
+	rxq_ctrl_data = (hw->rfd_burst & RXQ_RFD_BURST_NUM_MASK) <<
+			RXQ_RFD_BURST_NUM_SHIFT;
+
+	if (hw->ctrl_flags & ATL1C_RX_IPV6_CHKSUM)
+		rxq_ctrl_data |= IPV6_CHKSUM_CTRL_EN;
+
+	/* aspm for gigabit */
+	if (hw->nic_type != athr_l1d_2 && (hw->device_id & 1) != 0)
+		rxq_ctrl_data = FIELD_SETX(rxq_ctrl_data, ASPM_THRUPUT_LIMIT,
+			ASPM_THRUPUT_LIMIT_100M);
+
+	AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq_ctrl_data);
+}
+
+static void atl1c_configure_dma(struct atl1c_adapter *adapter)
+{
+	struct atl1c_hw *hw = &adapter->hw;
+	u32 dma_ctrl_data;
+
+	dma_ctrl_data = FIELDX(DMA_CTRL_RORDER_MODE, DMA_CTRL_RORDER_MODE_OUT) |
+		DMA_CTRL_RREQ_PRI_DATA |
+		FIELDX(DMA_CTRL_RREQ_BLEN, hw->dmar_block) |
+		FIELDX(DMA_CTRL_WDLY_CNT, DMA_CTRL_WDLY_CNT_DEF) |
+		FIELDX(DMA_CTRL_RDLY_CNT, DMA_CTRL_RDLY_CNT_DEF);
+
+	AT_WRITE_REG(hw, REG_DMA_CTRL, dma_ctrl_data);
+}
+
+/*
+ * Stop the mac, transmit and receive units
+ * hw - Struct containing variables accessed by shared code
+ * return : 0  or  idle status (if error)
+ */
+static int atl1c_stop_mac(struct atl1c_hw *hw)
+{
+	u32 data;
+
+	AT_READ_REG(hw, REG_RXQ_CTRL, &data);
+	data &= ~RXQ_CTRL_EN;
+	AT_WRITE_REG(hw, REG_RXQ_CTRL, data);
+
+	AT_READ_REG(hw, REG_TXQ_CTRL, &data);
+	data &= ~TXQ_CTRL_EN;
+	AT_WRITE_REG(hw, REG_TXQ_CTRL, data);
+
+	atl1c_wait_until_idle(hw, IDLE_STATUS_RXQ_BUSY | IDLE_STATUS_TXQ_BUSY);
+
+	AT_READ_REG(hw, REG_MAC_CTRL, &data);
+	data &= ~(MAC_CTRL_TX_EN | MAC_CTRL_RX_EN);
+	AT_WRITE_REG(hw, REG_MAC_CTRL, data);
+
+	return (int)atl1c_wait_until_idle(hw,
+		IDLE_STATUS_TXMAC_BUSY | IDLE_STATUS_RXMAC_BUSY);
+}
+
+static void atl1c_start_mac(struct atl1c_adapter *adapter)
+{
+	struct atl1c_hw *hw = &adapter->hw;
+	u32 mac, txq, rxq;
+
+	hw->mac_duplex = adapter->link_duplex == FULL_DUPLEX;
+	hw->mac_speed = adapter->link_speed == SPEED_1000 ?
+		atl1c_mac_speed_1000 : atl1c_mac_speed_10_100;
+
+	AT_READ_REG(hw, REG_TXQ_CTRL, &txq);
+	AT_READ_REG(hw, REG_RXQ_CTRL, &rxq);
+	AT_READ_REG(hw, REG_MAC_CTRL, &mac);
+
+	txq |= TXQ_CTRL_EN;
+	rxq |= RXQ_CTRL_EN;
+	mac |= MAC_CTRL_TX_EN | MAC_CTRL_TX_FLOW |
+	       MAC_CTRL_RX_EN | MAC_CTRL_RX_FLOW |
+	       MAC_CTRL_ADD_CRC | MAC_CTRL_PAD |
+	       MAC_CTRL_BC_EN | MAC_CTRL_SINGLE_PAUSE_EN |
+	       MAC_CTRL_HASH_ALG_CRC32;
+	if (hw->mac_duplex)
+		mac |= MAC_CTRL_DUPLX;
+	else
+		mac &= ~MAC_CTRL_DUPLX;
+	mac = FIELD_SETX(mac, MAC_CTRL_SPEED, hw->mac_speed);
+	mac = FIELD_SETX(mac, MAC_CTRL_PRMLEN, hw->preamble_len);
+
+	AT_WRITE_REG(hw, REG_TXQ_CTRL, txq);
+	AT_WRITE_REG(hw, REG_RXQ_CTRL, rxq);
+	AT_WRITE_REG(hw, REG_MAC_CTRL, mac);
+}
+
+/*
+ * Reset the transmit and receive units; mask and clear all interrupts.
+ * hw - Struct containing variables accessed by shared code
+ * return : 0  or  idle status (if error)
+ */
+static int atl1c_reset_mac(struct atl1c_hw *hw)
+{
+	struct atl1c_adapter *adapter = hw->adapter;
+	struct pci_dev *pdev = adapter->pdev;
+	u32 ctrl_data = 0;
+
+	atl1c_stop_mac(hw);
+	/*
+	 * Issue Soft Reset to the MAC.  This will reset the chip's
+	 * transmit, receive, DMA.  It will not effect
+	 * the current PCI configuration.  The global reset bit is self-
+	 * clearing, and should clear within a microsecond.
+	 */
+	AT_READ_REG(hw, REG_MASTER_CTRL, &ctrl_data);
+	ctrl_data |= MASTER_CTRL_OOB_DIS;
+	AT_WRITE_REG(hw, REG_MASTER_CTRL, ctrl_data | MASTER_CTRL_SOFT_RST);
+
+	AT_WRITE_FLUSH(hw);
+	msleep(10);
+	/* Wait at least 10ms for All module to be Idle */
+
+	if (atl1c_wait_until_idle(hw, IDLE_STATUS_MASK)) {
+		dev_err(&pdev->dev,
+			"MAC state machine can't be idle since"
+			" disabled for 10ms second\n");
+		return -1;
+	}
+	AT_WRITE_REG(hw, REG_MASTER_CTRL, ctrl_data);
+
+	/* driver control speed/duplex */
+	AT_READ_REG(hw, REG_MAC_CTRL, &ctrl_data);
+	AT_WRITE_REG(hw, REG_MAC_CTRL, ctrl_data | MAC_CTRL_SPEED_MODE_SW);
+
+	/* clk switch setting */
+	AT_READ_REG(hw, REG_SERDES, &ctrl_data);
+	switch (hw->nic_type) {
+	case athr_l2c_b:
+		ctrl_data &= ~(SERDES_PHY_CLK_SLOWDOWN |
+				SERDES_MAC_CLK_SLOWDOWN);
+		AT_WRITE_REG(hw, REG_SERDES, ctrl_data);
+		break;
+	case athr_l2c_b2:
+	case athr_l1d_2:
+		ctrl_data |= SERDES_PHY_CLK_SLOWDOWN | SERDES_MAC_CLK_SLOWDOWN;
+		AT_WRITE_REG(hw, REG_SERDES, ctrl_data);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static void atl1c_disable_l0s_l1(struct atl1c_hw *hw)
+{
+	u16 ctrl_flags = hw->ctrl_flags;
+
+	hw->ctrl_flags &= ~(ATL1C_ASPM_L0S_SUPPORT | ATL1C_ASPM_L1_SUPPORT);
+	atl1c_set_aspm(hw, SPEED_0);
+	hw->ctrl_flags = ctrl_flags;
+}
+
+/*
+ * Set ASPM state.
+ * Enable/disable L0s/L1 depend on link state.
+ */
+static void atl1c_set_aspm(struct atl1c_hw *hw, u16 link_speed)
+{
+	u32 pm_ctrl_data;
+	u32 link_l1_timer;
+
+	AT_READ_REG(hw, REG_PM_CTRL, &pm_ctrl_data);
+	pm_ctrl_data &= ~(PM_CTRL_ASPM_L1_EN |
+			  PM_CTRL_ASPM_L0S_EN |
+			  PM_CTRL_MAC_ASPM_CHK);
+	/* L1 timer */
+	if (hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) {
+		pm_ctrl_data &= ~PMCTRL_TXL1_AFTER_L0S;
+		link_l1_timer =
+			link_speed == SPEED_1000 || link_speed == SPEED_100 ?
+			L1D_PMCTRL_L1_ENTRY_TM_16US : 1;
+		pm_ctrl_data = FIELD_SETX(pm_ctrl_data,
+			L1D_PMCTRL_L1_ENTRY_TM, link_l1_timer);
+	} else {
+		link_l1_timer = hw->nic_type == athr_l2c_b ?
+			L2CB1_PM_CTRL_L1_ENTRY_TM : L1C_PM_CTRL_L1_ENTRY_TM;
+		if (link_speed != SPEED_1000 && link_speed != SPEED_100)
+			link_l1_timer = 1;
+		pm_ctrl_data = FIELD_SETX(pm_ctrl_data,
+			PM_CTRL_L1_ENTRY_TIMER, link_l1_timer);
+	}
+
+	/* L0S/L1 enable */
+	if ((hw->ctrl_flags & ATL1C_ASPM_L0S_SUPPORT) && link_speed != SPEED_0)
+		pm_ctrl_data |= PM_CTRL_ASPM_L0S_EN | PM_CTRL_MAC_ASPM_CHK;
+	if (hw->ctrl_flags & ATL1C_ASPM_L1_SUPPORT)
+		pm_ctrl_data |= PM_CTRL_ASPM_L1_EN | PM_CTRL_MAC_ASPM_CHK;
+
+	/* l2cb & l1d & l2cb2 & l1d2 */
+	if (hw->nic_type == athr_l2c_b || hw->nic_type == athr_l1d ||
+	    hw->nic_type == athr_l2c_b2 || hw->nic_type == athr_l1d_2) {
+		pm_ctrl_data = FIELD_SETX(pm_ctrl_data,
+			PM_CTRL_PM_REQ_TIMER, PM_CTRL_PM_REQ_TO_DEF);
+		pm_ctrl_data |= PM_CTRL_RCVR_WT_TIMER |
+				PM_CTRL_SERDES_PD_EX_L1 |
+				PM_CTRL_CLK_SWH_L1;
+		pm_ctrl_data &= ~(PM_CTRL_SERDES_L1_EN |
+				  PM_CTRL_SERDES_PLL_L1_EN |
+				  PM_CTRL_SERDES_BUFS_RX_L1_EN |
+				  PM_CTRL_SA_DLY_EN |
+				  PM_CTRL_HOTRST);
+		/* disable l0s if link down or l2cb */
+		if (link_speed == SPEED_0 || hw->nic_type == athr_l2c_b)
+			pm_ctrl_data &= ~PM_CTRL_ASPM_L0S_EN;
+	} else { /* l1c */
+		pm_ctrl_data =
+			FIELD_SETX(pm_ctrl_data, PM_CTRL_L1_ENTRY_TIMER, 0);
+		if (link_speed != SPEED_0) {
+			pm_ctrl_data |= PM_CTRL_SERDES_L1_EN |
+					PM_CTRL_SERDES_PLL_L1_EN |
+					PM_CTRL_SERDES_BUFS_RX_L1_EN;
+			pm_ctrl_data &= ~(PM_CTRL_SERDES_PD_EX_L1 |
+					  PM_CTRL_CLK_SWH_L1 |
+					  PM_CTRL_ASPM_L0S_EN |
+					  PM_CTRL_ASPM_L1_EN);
+		} else { /* link down */
+			pm_ctrl_data |= PM_CTRL_CLK_SWH_L1;
+			pm_ctrl_data &= ~(PM_CTRL_SERDES_L1_EN |
+					  PM_CTRL_SERDES_PLL_L1_EN |
+					  PM_CTRL_SERDES_BUFS_RX_L1_EN |
+					  PM_CTRL_ASPM_L0S_EN);
+		}
+	}
+	AT_WRITE_REG(hw, REG_PM_CTRL, pm_ctrl_data);
+
+	return;
+}
+
+/**
+ * atl1c_configure_mac - Configure Transmit&Receive Unit after Reset
+ * @adapter: board private structure
+ *
+ * Configure the Tx /Rx unit of the MAC after a reset.
+ */
+static int atl1c_configure_mac(struct atl1c_adapter *adapter)
+{
+	struct atl1c_hw *hw = &adapter->hw;
+	u32 master_ctrl_data = 0;
+	u32 intr_modrt_data;
+	u32 data;
+
+	AT_READ_REG(hw, REG_MASTER_CTRL, &master_ctrl_data);
+	master_ctrl_data &= ~(MASTER_CTRL_TX_ITIMER_EN |
+			      MASTER_CTRL_RX_ITIMER_EN |
+			      MASTER_CTRL_INT_RDCLR);
+	/* clear interrupt status */
+	AT_WRITE_REG(hw, REG_ISR, 0xFFFFFFFF);
+	/*  Clear any WOL status */
+	AT_WRITE_REG(hw, REG_WOL_CTRL, 0);
+	/* set Interrupt Clear Timer
+	 * HW will enable self to assert interrupt event to system after
+	 * waiting x-time for software to notify it accept interrupt.
+	 */
+
+	data = CLK_GATING_EN_ALL;
+	if (hw->ctrl_flags & ATL1C_CLK_GATING_EN) {
+		if (hw->nic_type == athr_l2c_b)
+			data &= ~CLK_GATING_RXMAC_EN;
+	} else
+		data = 0;
+	AT_WRITE_REG(hw, REG_CLK_GATING_CTRL, data);
+
+	AT_WRITE_REG(hw, REG_INT_RETRIG_TIMER,
+		hw->ict & INT_RETRIG_TIMER_MASK);
+
+	atl1c_configure_des_ring(adapter);
+
+	if (hw->ctrl_flags & ATL1C_INTR_MODRT_ENABLE) {
+		intr_modrt_data = (hw->tx_imt & IRQ_MODRT_TIMER_MASK) <<
+					IRQ_MODRT_TX_TIMER_SHIFT;
+		intr_modrt_data |= (hw->rx_imt & IRQ_MODRT_TIMER_MASK) <<
+					IRQ_MODRT_RX_TIMER_SHIFT;
+		AT_WRITE_REG(hw, REG_IRQ_MODRT_TIMER_INIT, intr_modrt_data);
+		master_ctrl_data |=
+			MASTER_CTRL_TX_ITIMER_EN | MASTER_CTRL_RX_ITIMER_EN;
+	}
+
+	if (hw->ctrl_flags & ATL1C_INTR_CLEAR_ON_READ)
+		master_ctrl_data |= MASTER_CTRL_INT_RDCLR;
+
+	master_ctrl_data |= MASTER_CTRL_SA_TIMER_EN;
+	AT_WRITE_REG(hw, REG_MASTER_CTRL, master_ctrl_data);
+
+	AT_WRITE_REG(hw, REG_SMB_STAT_TIMER,
+		hw->smb_timer & SMB_STAT_TIMER_MASK);
+
+	/* set MTU */
+	AT_WRITE_REG(hw, REG_MTU, hw->max_frame_size + ETH_HLEN +
+			VLAN_HLEN + ETH_FCS_LEN);
+
+	atl1c_configure_tx(adapter);
+	atl1c_configure_rx(adapter);
+	atl1c_configure_dma(adapter);
+
+	return 0;
+}
+
+static int atl1c_configure(struct atl1c_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int num;
+	int i;
+
+	if (adapter->hw.nic_type == athr_mt) {
+		u32 mode;
+
+		AT_READ_REG(&adapter->hw, REG_MT_MODE, &mode);
+		if (adapter->rx_queue_count == 4)
+			mode |= MT_MODE_4Q;
+		else
+			mode &= ~MT_MODE_4Q;
+		AT_WRITE_REG(&adapter->hw, REG_MT_MODE, mode);
+	}
+
+	atl1c_init_ring_ptrs(adapter);
+	atl1c_set_multi(netdev);
+	atl1c_restore_vlan(adapter);
+
+	for (i = 0; i < adapter->rx_queue_count; ++i) {
+		num = atl1c_alloc_rx_buffer(adapter, i, false);
+		if (unlikely(num == 0))
+			return -ENOMEM;
+	}
+
+	if (atl1c_configure_mac(adapter))
+		return -EIO;
+
+	return 0;
+}
+
+static void atl1c_update_hw_stats(struct atl1c_adapter *adapter)
+{
+	u16 hw_reg_addr = 0;
+	unsigned long *stats_item = NULL;
+	u32 data;
+
+	/* update rx status */
+	hw_reg_addr = REG_MAC_RX_STATUS_BIN;
+	stats_item  = &adapter->hw_stats.rx_ok;
+	while (hw_reg_addr <= REG_MAC_RX_STATUS_END) {
+		AT_READ_REG(&adapter->hw, hw_reg_addr, &data);
+		*stats_item += data;
+		stats_item++;
+		hw_reg_addr += 4;
+	}
+/* update tx status */
+	hw_reg_addr = REG_MAC_TX_STATUS_BIN;
+	stats_item  = &adapter->hw_stats.tx_ok;
+	while (hw_reg_addr <= REG_MAC_TX_STATUS_END) {
+		AT_READ_REG(&adapter->hw, hw_reg_addr, &data);
+		*stats_item += data;
+		stats_item++;
+		hw_reg_addr += 4;
+	}
+}
+
+/**
+ * atl1c_get_stats - Get System Network Statistics
+ * @netdev: network interface device structure
+ *
+ * Returns the address of the device statistics structure.
+ * The statistics are actually updated from the timer callback.
+ */
+static struct net_device_stats *atl1c_get_stats(struct net_device *netdev)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct atl1c_hw_stats  *hw_stats = &adapter->hw_stats;
+	struct net_device_stats *net_stats = &netdev->stats;
+
+	atl1c_update_hw_stats(adapter);
+	net_stats->rx_bytes   = hw_stats->rx_byte_cnt;
+	net_stats->tx_bytes   = hw_stats->tx_byte_cnt;
+	net_stats->multicast  = hw_stats->rx_mcast;
+	net_stats->collisions = hw_stats->tx_1_col +
+				hw_stats->tx_2_col +
+				hw_stats->tx_late_col +
+				hw_stats->tx_abort_col;
+
+	net_stats->rx_errors  = hw_stats->rx_frag +
+				hw_stats->rx_fcs_err +
+				hw_stats->rx_len_err +
+				hw_stats->rx_sz_ov +
+				hw_stats->rx_rrd_ov +
+				hw_stats->rx_align_err +
+				hw_stats->rx_rxf_ov;
+
+	net_stats->rx_fifo_errors   = hw_stats->rx_rxf_ov;
+	net_stats->rx_length_errors = hw_stats->rx_len_err;
+	net_stats->rx_crc_errors    = hw_stats->rx_fcs_err;
+	net_stats->rx_frame_errors  = hw_stats->rx_align_err;
+	net_stats->rx_dropped       = hw_stats->rx_rrd_ov;
+
+	net_stats->tx_errors = hw_stats->tx_late_col +
+			       hw_stats->tx_abort_col +
+			       hw_stats->tx_underrun +
+			       hw_stats->tx_trunc;
+
+	net_stats->tx_fifo_errors    = hw_stats->tx_underrun;
+	net_stats->tx_aborted_errors = hw_stats->tx_abort_col;
+	net_stats->tx_window_errors  = hw_stats->tx_late_col;
+
+	net_stats->rx_packets = hw_stats->rx_ok + net_stats->rx_errors;
+	net_stats->tx_packets = hw_stats->tx_ok + net_stats->tx_errors;
+
+	return net_stats;
+}
+
+static inline void atl1c_clear_phy_int(struct atl1c_adapter *adapter)
+{
+	u16 phy_data;
+
+	spin_lock(&adapter->mdio_lock);
+	atl1c_read_phy_reg(&adapter->hw, MII_ISR, &phy_data);
+	spin_unlock(&adapter->mdio_lock);
+}
+
+static int atl1c_clean_tx(struct napi_struct *napi, int budget)
+{
+	struct atl1c_tpd_ring *tpd_ring =
+		container_of(napi, struct atl1c_tpd_ring, napi);
+	struct atl1c_adapter *adapter = tpd_ring->adapter;
+	struct netdev_queue *txq =
+		netdev_get_tx_queue(napi->dev, tpd_ring->num);
+	struct atl1c_buffer *buffer_info;
+	struct pci_dev *pdev = adapter->pdev;
+	u16 next_to_clean = atomic_read(&tpd_ring->next_to_clean);
+	u16 hw_next_to_clean;
+	unsigned int total_bytes = 0, total_packets = 0;
+	unsigned long flags;
+
+	AT_READ_REGW(&adapter->hw, atl1c_qregs[tpd_ring->num].tpd_cons,
+		     &hw_next_to_clean);
+
+	while (next_to_clean != hw_next_to_clean) {
+		buffer_info = &tpd_ring->buffer_info[next_to_clean];
+		if (buffer_info->skb) {
+			total_bytes += buffer_info->skb->len;
+			total_packets++;
+		}
+		atl1c_clean_buffer(pdev, buffer_info);
+		if (++next_to_clean == tpd_ring->count)
+			next_to_clean = 0;
+		atomic_set(&tpd_ring->next_to_clean, next_to_clean);
+	}
+
+	netdev_tx_completed_queue(txq, total_packets, total_bytes);
+
+	if (netif_tx_queue_stopped(txq) && netif_carrier_ok(adapter->netdev))
+		netif_tx_wake_queue(txq);
+
+	if (total_packets < budget) {
+		napi_complete_done(napi, total_packets);
+		spin_lock_irqsave(&adapter->hw.intr_mask_lock, flags);
+		adapter->hw.intr_mask |= atl1c_qregs[tpd_ring->num].tx_isr;
+		AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask);
+		spin_unlock_irqrestore(&adapter->hw.intr_mask_lock, flags);
+		return total_packets;
+	}
+	return budget;
+}
+
+static void atl1c_intr_rx_tx(struct atl1c_adapter *adapter, u32 status)
+{
+	struct atl1c_hw *hw = &adapter->hw;
+	u32 intr_mask;
+	int i;
+
+	spin_lock(&hw->intr_mask_lock);
+	intr_mask = hw->intr_mask;
+	for (i = 0; i < adapter->rx_queue_count; ++i) {
+		if (!(status & atl1c_qregs[i].rx_isr))
+			continue;
+		if (napi_schedule_prep(&adapter->rrd_ring[i].napi)) {
+			intr_mask &= ~atl1c_qregs[i].rx_isr;
+			__napi_schedule(&adapter->rrd_ring[i].napi);
+		}
+	}
+	for (i = 0; i < adapter->tx_queue_count; ++i) {
+		if (!(status & atl1c_qregs[i].tx_isr))
+			continue;
+		if (napi_schedule_prep(&adapter->tpd_ring[i].napi)) {
+			intr_mask &= ~atl1c_qregs[i].tx_isr;
+			__napi_schedule(&adapter->tpd_ring[i].napi);
+		}
+	}
+
+	if (hw->intr_mask != intr_mask) {
+		hw->intr_mask = intr_mask;
+		AT_WRITE_REG(hw, REG_IMR, hw->intr_mask);
+	}
+	spin_unlock(&hw->intr_mask_lock);
+}
+
+/**
+ * atl1c_intr - Interrupt Handler
+ * @irq: interrupt number
+ * @data: pointer to a network interface device structure
+ */
+static irqreturn_t atl1c_intr(int irq, void *data)
+{
+	struct net_device *netdev  = data;
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct pci_dev *pdev = adapter->pdev;
+	struct atl1c_hw *hw = &adapter->hw;
+	int max_ints = AT_MAX_INT_WORK;
+	int handled = IRQ_NONE;
+	u32 status;
+	u32 reg_data;
+
+	do {
+		AT_READ_REG(hw, REG_ISR, &reg_data);
+		status = reg_data & hw->intr_mask;
+
+		if (status == 0 || (status & ISR_DIS_INT) != 0) {
+			if (max_ints != AT_MAX_INT_WORK)
+				handled = IRQ_HANDLED;
+			break;
+		}
+		/* link event */
+		if (status & ISR_GPHY)
+			atl1c_clear_phy_int(adapter);
+		/* Ack ISR */
+		AT_WRITE_REG(hw, REG_ISR, status | ISR_DIS_INT);
+		if (status & (ISR_RX_PKT | ISR_TX_PKT))
+			atl1c_intr_rx_tx(adapter, status);
+
+		handled = IRQ_HANDLED;
+		/* check if PCIE PHY Link down */
+		if (status & ISR_ERROR) {
+			if (netif_msg_hw(adapter))
+				dev_err(&pdev->dev,
+					"atl1c hardware error (status = 0x%x)\n",
+					status & ISR_ERROR);
+			/* reset MAC */
+			set_bit(ATL1C_WORK_EVENT_RESET, &adapter->work_event);
+			schedule_work(&adapter->common_task);
+			return IRQ_HANDLED;
+		}
+
+		if (status & ISR_OVER)
+			if (netif_msg_intr(adapter))
+				dev_warn(&pdev->dev,
+					"TX/RX overflow (status = 0x%x)\n",
+					status & ISR_OVER);
+
+		/* link event */
+		if (status & (ISR_GPHY | ISR_MANUAL)) {
+			netdev->stats.tx_carrier_errors++;
+			atl1c_link_chg_event(adapter);
+			break;
+		}
+
+	} while (--max_ints > 0);
+	/* re-enable Interrupt*/
+	AT_WRITE_REG(&adapter->hw, REG_ISR, 0);
+	return handled;
+}
+
+static inline void atl1c_rx_checksum(struct atl1c_adapter *adapter,
+		  struct sk_buff *skb, struct atl1c_recv_ret_status *prrs)
+{
+	if (adapter->hw.nic_type == athr_mt) {
+		if (prrs->word3 & RRS_MT_PROT_ID_TCPUDP)
+			skb->ip_summed = CHECKSUM_UNNECESSARY;
+		return;
+	}
+	/*
+	 * The pid field in RRS in not correct sometimes, so we
+	 * cannot figure out if the packet is fragmented or not,
+	 * so we tell the KERNEL CHECKSUM_NONE
+	 */
+	skb_checksum_none_assert(skb);
+}
+
+static int atl1c_alloc_rx_buffer(struct atl1c_adapter *adapter, u32 queue,
+				 bool napi_mode)
+{
+	struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[queue];
+	struct atl1c_rrd_ring *rrd_ring = &adapter->rrd_ring[queue];
+	struct pci_dev *pdev = adapter->pdev;
+	struct atl1c_buffer *buffer_info, *next_info;
+	struct sk_buff *skb;
+	void *vir_addr = NULL;
+	u16 num_alloc = 0;
+	u16 rfd_next_to_use, next_next;
+	struct atl1c_rx_free_desc *rfd_desc;
+	dma_addr_t mapping;
+
+	next_next = rfd_next_to_use = rfd_ring->next_to_use;
+	if (++next_next == rfd_ring->count)
+		next_next = 0;
+	buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
+	next_info = &rfd_ring->buffer_info[next_next];
+
+	while (next_info->flags & ATL1C_BUFFER_FREE) {
+		rfd_desc = ATL1C_RFD_DESC(rfd_ring, rfd_next_to_use);
+
+		/* When DMA RX address is set to something like
+		 * 0x....fc0, it will be very likely to cause DMA
+		 * RFD overflow issue.
+		 *
+		 * To work around it, we apply rx skb with 64 bytes
+		 * longer space, and offset the address whenever
+		 * 0x....fc0 is detected.
+		 */
+		if (likely(napi_mode))
+			skb = napi_alloc_skb(&rrd_ring->napi, adapter->rx_buffer_len + 64);
+		else
+			skb = netdev_alloc_skb(adapter->netdev, adapter->rx_buffer_len + 64);
+		if (unlikely(!skb)) {
+			if (netif_msg_rx_err(adapter))
+				dev_warn(&pdev->dev, "alloc rx buffer failed\n");
+			break;
+		}
+
+		if (((unsigned long)skb->data & 0xfff) == 0xfc0)
+			skb_reserve(skb, 64);
+
+		/*
+		 * Make buffer alignment 2 beyond a 16 byte boundary
+		 * this will result in a 16 byte aligned IP header after
+		 * the 14 byte MAC header is removed
+		 */
+		vir_addr = skb->data;
+		ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY);
+		buffer_info->skb = skb;
+		buffer_info->length = adapter->rx_buffer_len;
+		mapping = dma_map_single(&pdev->dev, vir_addr,
+					 buffer_info->length, DMA_FROM_DEVICE);
+		if (unlikely(dma_mapping_error(&pdev->dev, mapping))) {
+			dev_kfree_skb(skb);
+			buffer_info->skb = NULL;
+			buffer_info->length = 0;
+			ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_FREE);
+			netif_warn(adapter, rx_err, adapter->netdev, "RX dma_map_single failed");
+			break;
+		}
+		buffer_info->dma = mapping;
+		ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE,
+			ATL1C_PCIMAP_FROMDEVICE);
+		rfd_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
+		rfd_next_to_use = next_next;
+		if (++next_next == rfd_ring->count)
+			next_next = 0;
+		buffer_info = &rfd_ring->buffer_info[rfd_next_to_use];
+		next_info = &rfd_ring->buffer_info[next_next];
+		num_alloc++;
+	}
+
+	if (num_alloc) {
+		/* TODO: update mailbox here */
+		wmb();
+		rfd_ring->next_to_use = rfd_next_to_use;
+		AT_WRITE_REG(&adapter->hw, atl1c_qregs[queue].rfd_prod,
+			     rfd_ring->next_to_use & MB_RFDX_PROD_IDX_MASK);
+	}
+
+	return num_alloc;
+}
+
+static void atl1c_clean_rrd(struct atl1c_rrd_ring *rrd_ring,
+			struct	atl1c_recv_ret_status *rrs, u16 num)
+{
+	u16 i;
+	/* the relationship between rrd and rfd is one map one */
+	for (i = 0; i < num; i++, rrs = ATL1C_RRD_DESC(rrd_ring,
+					rrd_ring->next_to_clean)) {
+		rrs->word3 &= ~RRS_RXD_UPDATED;
+		if (++rrd_ring->next_to_clean == rrd_ring->count)
+			rrd_ring->next_to_clean = 0;
+	}
+}
+
+static void atl1c_clean_rfd(struct atl1c_rfd_ring *rfd_ring,
+	struct atl1c_recv_ret_status *rrs, u16 num)
+{
+	u16 i;
+	u16 rfd_index;
+	struct atl1c_buffer *buffer_info = rfd_ring->buffer_info;
+
+	rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) &
+			RRS_RX_RFD_INDEX_MASK;
+	for (i = 0; i < num; i++) {
+		buffer_info[rfd_index].skb = NULL;
+		ATL1C_SET_BUFFER_STATE(&buffer_info[rfd_index],
+					ATL1C_BUFFER_FREE);
+		if (++rfd_index == rfd_ring->count)
+			rfd_index = 0;
+	}
+	rfd_ring->next_to_clean = rfd_index;
+}
+
+/**
+ * atl1c_clean_rx - NAPI Rx polling callback
+ * @napi: napi info
+ * @budget: limit of packets to clean
+ */
+static int atl1c_clean_rx(struct napi_struct *napi, int budget)
+{
+	struct atl1c_rrd_ring *rrd_ring =
+		container_of(napi, struct atl1c_rrd_ring, napi);
+	struct atl1c_adapter *adapter = rrd_ring->adapter;
+	u16 rfd_num, rfd_index;
+	u16 length;
+	struct pci_dev *pdev = adapter->pdev;
+	struct net_device *netdev  = adapter->netdev;
+	struct atl1c_rfd_ring *rfd_ring = &adapter->rfd_ring[rrd_ring->num];
+	struct sk_buff *skb;
+	struct atl1c_recv_ret_status *rrs;
+	struct atl1c_buffer *buffer_info;
+	int work_done = 0;
+	unsigned long flags;
+
+	/* Keep link state information with original netdev */
+	if (!netif_carrier_ok(adapter->netdev))
+		goto quit_polling;
+
+	while (1) {
+		if (work_done >= budget)
+			break;
+		rrs = ATL1C_RRD_DESC(rrd_ring, rrd_ring->next_to_clean);
+		if (likely(RRS_RXD_IS_VALID(rrs->word3))) {
+			rfd_num = (rrs->word0 >> RRS_RX_RFD_CNT_SHIFT) &
+				RRS_RX_RFD_CNT_MASK;
+			if (unlikely(rfd_num != 1))
+				/* TODO support mul rfd*/
+				if (netif_msg_rx_err(adapter))
+					dev_warn(&pdev->dev,
+						"Multi rfd not support yet!\n");
+			goto rrs_checked;
+		} else {
+			break;
+		}
+rrs_checked:
+		atl1c_clean_rrd(rrd_ring, rrs, rfd_num);
+		if (rrs->word3 & (RRS_RX_ERR_SUM | RRS_802_3_LEN_ERR)) {
+			atl1c_clean_rfd(rfd_ring, rrs, rfd_num);
+			if (netif_msg_rx_err(adapter))
+				dev_warn(&pdev->dev,
+					 "wrong packet! rrs word3 is %x\n",
+					 rrs->word3);
+			continue;
+		}
+
+		length = le16_to_cpu((rrs->word3 >> RRS_PKT_SIZE_SHIFT) &
+				RRS_PKT_SIZE_MASK);
+		/* Good Receive */
+		if (likely(rfd_num == 1)) {
+			rfd_index = (rrs->word0 >> RRS_RX_RFD_INDEX_SHIFT) &
+					RRS_RX_RFD_INDEX_MASK;
+			buffer_info = &rfd_ring->buffer_info[rfd_index];
+			dma_unmap_single(&pdev->dev, buffer_info->dma,
+					 buffer_info->length, DMA_FROM_DEVICE);
+			skb = buffer_info->skb;
+		} else {
+			/* TODO */
+			if (netif_msg_rx_err(adapter))
+				dev_warn(&pdev->dev,
+					"Multi rfd not support yet!\n");
+			break;
+		}
+		atl1c_clean_rfd(rfd_ring, rrs, rfd_num);
+		skb_put(skb, length - ETH_FCS_LEN);
+		skb->protocol = eth_type_trans(skb, netdev);
+		atl1c_rx_checksum(adapter, skb, rrs);
+		if (rrs->word3 & RRS_VLAN_INS) {
+			u16 vlan;
+
+			AT_TAG_TO_VLAN(rrs->vlan_tag, vlan);
+			vlan = le16_to_cpu(vlan);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan);
+		}
+		napi_gro_receive(napi, skb);
+
+		work_done++;
+	}
+	if (work_done)
+		atl1c_alloc_rx_buffer(adapter, rrd_ring->num, true);
+
+	if (work_done < budget) {
+quit_polling:
+		napi_complete_done(napi, work_done);
+		spin_lock_irqsave(&adapter->hw.intr_mask_lock, flags);
+		adapter->hw.intr_mask |= atl1c_qregs[rrd_ring->num].rx_isr;
+		AT_WRITE_REG(&adapter->hw, REG_IMR, adapter->hw.intr_mask);
+		spin_unlock_irqrestore(&adapter->hw.intr_mask_lock, flags);
+	}
+	return work_done;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+
+/*
+ * Polling 'interrupt' - used by things like netconsole to send skbs
+ * without having to re-enable interrupts. It's not called while
+ * the interrupt routine is executing.
+ */
+static void atl1c_netpoll(struct net_device *netdev)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	disable_irq(adapter->pdev->irq);
+	atl1c_intr(adapter->pdev->irq, netdev);
+	enable_irq(adapter->pdev->irq);
+}
+#endif
+
+static inline u16 atl1c_tpd_avail(struct atl1c_adapter *adapter, u32 queue)
+{
+	struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[queue];
+	u16 next_to_use = 0;
+	u16 next_to_clean = 0;
+
+	next_to_clean = atomic_read(&tpd_ring->next_to_clean);
+	next_to_use   = tpd_ring->next_to_use;
+
+	return (u16)(next_to_clean > next_to_use) ?
+		(next_to_clean - next_to_use - 1) :
+		(tpd_ring->count + next_to_clean - next_to_use - 1);
+}
+
+/*
+ * get next usable tpd
+ * Note: should call atl1c_tdp_avail to make sure
+ * there is enough tpd to use
+ */
+static struct atl1c_tpd_desc *atl1c_get_tpd(struct atl1c_adapter *adapter,
+					    u32 queue)
+{
+	struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[queue];
+	struct atl1c_tpd_desc *tpd_desc;
+	u16 next_to_use = 0;
+
+	next_to_use = tpd_ring->next_to_use;
+	if (++tpd_ring->next_to_use == tpd_ring->count)
+		tpd_ring->next_to_use = 0;
+	tpd_desc = ATL1C_TPD_DESC(tpd_ring, next_to_use);
+	memset(tpd_desc, 0, sizeof(struct atl1c_tpd_desc));
+	return	tpd_desc;
+}
+
+static struct atl1c_buffer *
+atl1c_get_tx_buffer(struct atl1c_adapter *adapter, struct atl1c_tpd_desc *tpd)
+{
+	struct atl1c_tpd_ring *tpd_ring = adapter->tpd_ring;
+
+	return &tpd_ring->buffer_info[tpd -
+			(struct atl1c_tpd_desc *)tpd_ring->desc];
+}
+
+/* Calculate the transmit packet descript needed*/
+static u16 atl1c_cal_tpd_req(const struct sk_buff *skb)
+{
+	u16 tpd_req;
+	u16 proto_hdr_len = 0;
+
+	tpd_req = skb_shinfo(skb)->nr_frags + 1;
+
+	if (skb_is_gso(skb)) {
+		proto_hdr_len = skb_tcp_all_headers(skb);
+		if (proto_hdr_len < skb_headlen(skb))
+			tpd_req++;
+		if (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV6)
+			tpd_req++;
+	}
+	return tpd_req;
+}
+
+static int atl1c_tso_csum(struct atl1c_adapter *adapter,
+			  struct sk_buff *skb,
+			  struct atl1c_tpd_desc **tpd,
+			  u32 queue)
+{
+	struct pci_dev *pdev = adapter->pdev;
+	unsigned short offload_type;
+	u8 hdr_len;
+	u32 real_len;
+
+	if (skb_is_gso(skb)) {
+		int err;
+
+		err = skb_cow_head(skb, 0);
+		if (err < 0)
+			return err;
+
+		offload_type = skb_shinfo(skb)->gso_type;
+
+		if (offload_type & SKB_GSO_TCPV4) {
+			real_len = (((unsigned char *)ip_hdr(skb) - skb->data)
+					+ ntohs(ip_hdr(skb)->tot_len));
+
+			if (real_len < skb->len) {
+				err = pskb_trim(skb, real_len);
+				if (err)
+					return err;
+			}
+
+			hdr_len = skb_tcp_all_headers(skb);
+			if (unlikely(skb->len == hdr_len)) {
+				/* only xsum need */
+				if (netif_msg_tx_queued(adapter))
+					dev_warn(&pdev->dev,
+						"IPV4 tso with zero data??\n");
+				goto check_sum;
+			} else {
+				ip_hdr(skb)->check = 0;
+				tcp_hdr(skb)->check = ~csum_tcpudp_magic(
+							ip_hdr(skb)->saddr,
+							ip_hdr(skb)->daddr,
+							0, IPPROTO_TCP, 0);
+				(*tpd)->word1 |= 1 << TPD_IPV4_PACKET_SHIFT;
+			}
+		}
+
+		if (offload_type & SKB_GSO_TCPV6) {
+			struct atl1c_tpd_ext_desc *etpd =
+				*(struct atl1c_tpd_ext_desc **)(tpd);
+
+			memset(etpd, 0, sizeof(struct atl1c_tpd_ext_desc));
+			*tpd = atl1c_get_tpd(adapter, queue);
+			ipv6_hdr(skb)->payload_len = 0;
+			/* check payload == 0 byte ? */
+			hdr_len = skb_tcp_all_headers(skb);
+			if (unlikely(skb->len == hdr_len)) {
+				/* only xsum need */
+				if (netif_msg_tx_queued(adapter))
+					dev_warn(&pdev->dev,
+						"IPV6 tso with zero data??\n");
+				goto check_sum;
+			} else
+				tcp_v6_gso_csum_prep(skb);
+
+			etpd->word1 |= 1 << TPD_LSO_EN_SHIFT;
+			etpd->word1 |= 1 << TPD_LSO_VER_SHIFT;
+			etpd->pkt_len = cpu_to_le32(skb->len);
+			(*tpd)->word1 |= 1 << TPD_LSO_VER_SHIFT;
+		}
+
+		(*tpd)->word1 |= 1 << TPD_LSO_EN_SHIFT;
+		(*tpd)->word1 |= (skb_transport_offset(skb) & TPD_TCPHDR_OFFSET_MASK) <<
+				TPD_TCPHDR_OFFSET_SHIFT;
+		(*tpd)->word1 |= (skb_shinfo(skb)->gso_size & TPD_MSS_MASK) <<
+				TPD_MSS_SHIFT;
+		return 0;
+	}
+
+check_sum:
+	if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
+		u8 css, cso;
+		cso = skb_checksum_start_offset(skb);
+
+		if (unlikely(cso & 0x1)) {
+			if (netif_msg_tx_err(adapter))
+				dev_err(&adapter->pdev->dev,
+					"payload offset should not an event number\n");
+			return -1;
+		} else {
+			css = cso + skb->csum_offset;
+
+			(*tpd)->word1 |= ((cso >> 1) & TPD_PLOADOFFSET_MASK) <<
+					TPD_PLOADOFFSET_SHIFT;
+			(*tpd)->word1 |= ((css >> 1) & TPD_CCSUM_OFFSET_MASK) <<
+					TPD_CCSUM_OFFSET_SHIFT;
+			(*tpd)->word1 |= 1 << TPD_CCSUM_EN_SHIFT;
+		}
+	}
+	return 0;
+}
+
+static void atl1c_tx_rollback(struct atl1c_adapter *adpt,
+			      struct atl1c_tpd_desc *first_tpd,
+			      u32 queue)
+{
+	struct atl1c_tpd_ring *tpd_ring = &adpt->tpd_ring[queue];
+	struct atl1c_buffer *buffer_info;
+	struct atl1c_tpd_desc *tpd;
+	u16 first_index, index;
+
+	first_index = first_tpd - (struct atl1c_tpd_desc *)tpd_ring->desc;
+	index = first_index;
+	while (index != tpd_ring->next_to_use) {
+		tpd = ATL1C_TPD_DESC(tpd_ring, index);
+		buffer_info = &tpd_ring->buffer_info[index];
+		atl1c_clean_buffer(adpt->pdev, buffer_info);
+		memset(tpd, 0, sizeof(struct atl1c_tpd_desc));
+		if (++index == tpd_ring->count)
+			index = 0;
+	}
+	tpd_ring->next_to_use = first_index;
+}
+
+static int atl1c_tx_map(struct atl1c_adapter *adapter,
+			struct sk_buff *skb, struct atl1c_tpd_desc *tpd,
+			u32 queue)
+{
+	struct atl1c_tpd_desc *use_tpd = NULL;
+	struct atl1c_buffer *buffer_info = NULL;
+	u16 buf_len = skb_headlen(skb);
+	u16 map_len = 0;
+	u16 mapped_len = 0;
+	u16 hdr_len = 0;
+	u16 nr_frags;
+	u16 f;
+	int tso;
+
+	nr_frags = skb_shinfo(skb)->nr_frags;
+	tso = (tpd->word1 >> TPD_LSO_EN_SHIFT) & TPD_LSO_EN_MASK;
+	if (tso) {
+		/* TSO */
+		hdr_len = skb_tcp_all_headers(skb);
+		map_len = hdr_len;
+		use_tpd = tpd;
+
+		buffer_info = atl1c_get_tx_buffer(adapter, use_tpd);
+		buffer_info->length = map_len;
+		buffer_info->dma = dma_map_single(&adapter->pdev->dev,
+						  skb->data, hdr_len,
+						  DMA_TO_DEVICE);
+		if (unlikely(dma_mapping_error(&adapter->pdev->dev, buffer_info->dma)))
+			goto err_dma;
+		ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY);
+		ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE,
+			ATL1C_PCIMAP_TODEVICE);
+		mapped_len += map_len;
+		use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
+		use_tpd->buffer_len = cpu_to_le16(buffer_info->length);
+	}
+
+	if (mapped_len < buf_len) {
+		/* mapped_len == 0, means we should use the first tpd,
+		   which is given by caller  */
+		if (mapped_len == 0)
+			use_tpd = tpd;
+		else {
+			use_tpd = atl1c_get_tpd(adapter, queue);
+			memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc));
+		}
+		buffer_info = atl1c_get_tx_buffer(adapter, use_tpd);
+		buffer_info->length = buf_len - mapped_len;
+		buffer_info->dma =
+			dma_map_single(&adapter->pdev->dev,
+				       skb->data + mapped_len,
+				       buffer_info->length, DMA_TO_DEVICE);
+		if (unlikely(dma_mapping_error(&adapter->pdev->dev, buffer_info->dma)))
+			goto err_dma;
+
+		ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY);
+		ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_SINGLE,
+			ATL1C_PCIMAP_TODEVICE);
+		use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
+		use_tpd->buffer_len  = cpu_to_le16(buffer_info->length);
+	}
+
+	for (f = 0; f < nr_frags; f++) {
+		skb_frag_t *frag = &skb_shinfo(skb)->frags[f];
+
+		use_tpd = atl1c_get_tpd(adapter, queue);
+		memcpy(use_tpd, tpd, sizeof(struct atl1c_tpd_desc));
+
+		buffer_info = atl1c_get_tx_buffer(adapter, use_tpd);
+		buffer_info->length = skb_frag_size(frag);
+		buffer_info->dma = skb_frag_dma_map(&adapter->pdev->dev,
+						    frag, 0,
+						    buffer_info->length,
+						    DMA_TO_DEVICE);
+		if (dma_mapping_error(&adapter->pdev->dev, buffer_info->dma))
+			goto err_dma;
+
+		ATL1C_SET_BUFFER_STATE(buffer_info, ATL1C_BUFFER_BUSY);
+		ATL1C_SET_PCIMAP_TYPE(buffer_info, ATL1C_PCIMAP_PAGE,
+			ATL1C_PCIMAP_TODEVICE);
+		use_tpd->buffer_addr = cpu_to_le64(buffer_info->dma);
+		use_tpd->buffer_len  = cpu_to_le16(buffer_info->length);
+	}
+
+	/* The last tpd */
+	use_tpd->word1 |= 1 << TPD_EOP_SHIFT;
+	/* The last buffer info contain the skb address,
+	   so it will be free after unmap */
+	buffer_info->skb = skb;
+
+	return 0;
+
+err_dma:
+	buffer_info->dma = 0;
+	buffer_info->length = 0;
+	return -1;
+}
+
+static void atl1c_tx_queue(struct atl1c_adapter *adapter, u32 queue)
+{
+	struct atl1c_tpd_ring *tpd_ring = &adapter->tpd_ring[queue];
+
+	AT_WRITE_REGW(&adapter->hw, atl1c_qregs[queue].tpd_prod,
+		      tpd_ring->next_to_use);
+}
+
+static netdev_tx_t atl1c_xmit_frame(struct sk_buff *skb,
+					  struct net_device *netdev)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	u32 queue = skb_get_queue_mapping(skb);
+	struct netdev_queue *txq = netdev_get_tx_queue(netdev, queue);
+	struct atl1c_tpd_desc *tpd;
+	u16 tpd_req;
+
+	if (test_bit(__AT_DOWN, &adapter->flags)) {
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	tpd_req = atl1c_cal_tpd_req(skb);
+
+	if (atl1c_tpd_avail(adapter, queue) < tpd_req) {
+		/* no enough descriptor, just stop queue */
+		atl1c_tx_queue(adapter, queue);
+		netif_tx_stop_queue(txq);
+		return NETDEV_TX_BUSY;
+	}
+
+	tpd = atl1c_get_tpd(adapter, queue);
+
+	/* do TSO and check sum */
+	if (atl1c_tso_csum(adapter, skb, &tpd, queue) != 0) {
+		atl1c_tx_queue(adapter, queue);
+		dev_kfree_skb_any(skb);
+		return NETDEV_TX_OK;
+	}
+
+	if (unlikely(skb_vlan_tag_present(skb))) {
+		u16 vlan = skb_vlan_tag_get(skb);
+		__le16 tag;
+
+		vlan = cpu_to_le16(vlan);
+		AT_VLAN_TO_TAG(vlan, tag);
+		tpd->word1 |= 1 << TPD_INS_VTAG_SHIFT;
+		tpd->vlan_tag = tag;
+	}
+
+	if (skb_network_offset(skb) != ETH_HLEN)
+		tpd->word1 |= 1 << TPD_ETH_TYPE_SHIFT; /* Ethernet frame */
+
+	if (atl1c_tx_map(adapter, skb, tpd, queue) < 0) {
+		netif_info(adapter, tx_done, adapter->netdev,
+			   "tx-skb dropped due to dma error\n");
+		/* roll back tpd/buffer */
+		atl1c_tx_rollback(adapter, tpd, queue);
+		dev_kfree_skb_any(skb);
+	} else {
+		bool more = netdev_xmit_more();
+
+		if (__netdev_tx_sent_queue(txq, skb->len, more))
+			atl1c_tx_queue(adapter, queue);
+	}
+
+	return NETDEV_TX_OK;
+}
+
+static void atl1c_free_irq(struct atl1c_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+
+	free_irq(adapter->pdev->irq, netdev);
+
+	if (adapter->have_msi)
+		pci_disable_msi(adapter->pdev);
+}
+
+static int atl1c_request_irq(struct atl1c_adapter *adapter)
+{
+	struct pci_dev    *pdev   = adapter->pdev;
+	struct net_device *netdev = adapter->netdev;
+	int flags = 0;
+	int err = 0;
+
+	adapter->have_msi = true;
+	err = pci_enable_msi(adapter->pdev);
+	if (err) {
+		if (netif_msg_ifup(adapter))
+			dev_err(&pdev->dev,
+				"Unable to allocate MSI interrupt Error: %d\n",
+				err);
+		adapter->have_msi = false;
+	}
+
+	if (!adapter->have_msi)
+		flags |= IRQF_SHARED;
+	err = request_irq(adapter->pdev->irq, atl1c_intr, flags,
+			netdev->name, netdev);
+	if (err) {
+		if (netif_msg_ifup(adapter))
+			dev_err(&pdev->dev,
+				"Unable to allocate interrupt Error: %d\n",
+				err);
+		if (adapter->have_msi)
+			pci_disable_msi(adapter->pdev);
+		return err;
+	}
+	if (netif_msg_ifup(adapter))
+		dev_dbg(&pdev->dev, "atl1c_request_irq OK\n");
+	return err;
+}
+
+
+static void atl1c_reset_dma_ring(struct atl1c_adapter *adapter)
+{
+	int i;
+	/* release tx-pending skbs and reset tx/rx ring index */
+	for (i = 0; i < adapter->tx_queue_count; ++i)
+		atl1c_clean_tx_ring(adapter, i);
+	for (i = 0; i < adapter->rx_queue_count; ++i)
+		atl1c_clean_rx_ring(adapter, i);
+}
+
+static int atl1c_up(struct atl1c_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int err;
+	int i;
+
+	netif_carrier_off(netdev);
+
+	err = atl1c_configure(adapter);
+	if (unlikely(err))
+		goto err_up;
+
+	err = atl1c_request_irq(adapter);
+	if (unlikely(err))
+		goto err_up;
+
+	atl1c_check_link_status(adapter);
+	clear_bit(__AT_DOWN, &adapter->flags);
+	for (i = 0; i < adapter->tx_queue_count; ++i)
+		napi_enable(&adapter->tpd_ring[i].napi);
+	for (i = 0; i < adapter->rx_queue_count; ++i)
+		napi_enable(&adapter->rrd_ring[i].napi);
+	atl1c_irq_enable(adapter);
+	netif_start_queue(netdev);
+	return err;
+
+err_up:
+	for (i = 0; i < adapter->rx_queue_count; ++i)
+		atl1c_clean_rx_ring(adapter, i);
+	return err;
+}
+
+static void atl1c_down(struct atl1c_adapter *adapter)
+{
+	struct net_device *netdev = adapter->netdev;
+	int i;
+
+	atl1c_del_timer(adapter);
+	adapter->work_event = 0; /* clear all event */
+	/* signal that we're down so the interrupt handler does not
+	 * reschedule our watchdog timer */
+	set_bit(__AT_DOWN, &adapter->flags);
+	netif_carrier_off(netdev);
+	for (i = 0; i < adapter->tx_queue_count; ++i)
+		napi_disable(&adapter->tpd_ring[i].napi);
+	for (i = 0; i < adapter->rx_queue_count; ++i)
+		napi_disable(&adapter->rrd_ring[i].napi);
+	atl1c_irq_disable(adapter);
+	atl1c_free_irq(adapter);
+	/* disable ASPM if device inactive */
+	atl1c_disable_l0s_l1(&adapter->hw);
+	/* reset MAC to disable all RX/TX */
+	atl1c_reset_mac(&adapter->hw);
+	msleep(1);
+
+	adapter->link_speed = SPEED_0;
+	adapter->link_duplex = -1;
+	atl1c_reset_dma_ring(adapter);
+}
+
+/**
+ * atl1c_open - Called when a network interface is made active
+ * @netdev: network interface device structure
+ *
+ * Returns 0 on success, negative value on failure
+ *
+ * The open entry point is called when a network interface is made
+ * active by the system (IFF_UP).  At this point all resources needed
+ * for transmit and receive operations are allocated, the interrupt
+ * handler is registered with the OS, the watchdog timer is started,
+ * and the stack is notified that the interface is ready.
+ */
+static int atl1c_open(struct net_device *netdev)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	int err;
+
+	/* disallow open during test */
+	if (test_bit(__AT_TESTING, &adapter->flags))
+		return -EBUSY;
+
+	/* allocate rx/tx dma buffer & descriptors */
+	err = atl1c_setup_ring_resources(adapter);
+	if (unlikely(err))
+		return err;
+
+	err = atl1c_up(adapter);
+	if (unlikely(err))
+		goto err_up;
+
+	return 0;
+
+err_up:
+	atl1c_free_irq(adapter);
+	atl1c_free_ring_resources(adapter);
+	atl1c_reset_mac(&adapter->hw);
+	return err;
+}
+
+/**
+ * atl1c_close - Disables a network interface
+ * @netdev: network interface device structure
+ *
+ * Returns 0, this is not allowed to fail
+ *
+ * The close entry point is called when an interface is de-activated
+ * by the OS.  The hardware is still under the drivers control, but
+ * needs to be disabled.  A global MAC reset is issued to stop the
+ * hardware, and all transmit and receive resources are freed.
+ */
+static int atl1c_close(struct net_device *netdev)
+{
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	WARN_ON(test_bit(__AT_RESETTING, &adapter->flags));
+	set_bit(__AT_DOWN, &adapter->flags);
+	cancel_work_sync(&adapter->common_task);
+	atl1c_down(adapter);
+	atl1c_free_ring_resources(adapter);
+	return 0;
+}
+
+static int atl1c_suspend(struct device *dev)
+{
+	struct net_device *netdev = dev_get_drvdata(dev);
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+	struct atl1c_hw *hw = &adapter->hw;
+	u32 wufc = adapter->wol;
+
+	atl1c_disable_l0s_l1(hw);
+	if (netif_running(netdev)) {
+		WARN_ON(test_bit(__AT_RESETTING, &adapter->flags));
+		atl1c_down(adapter);
+	}
+	netif_device_detach(netdev);
+
+	if (wufc)
+		if (atl1c_phy_to_ps_link(hw) != 0)
+			dev_dbg(dev, "phy power saving failed");
+
+	atl1c_power_saving(hw, wufc);
+
+	return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int atl1c_resume(struct device *dev)
+{
+	struct net_device *netdev = dev_get_drvdata(dev);
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	AT_WRITE_REG(&adapter->hw, REG_WOL_CTRL, 0);
+	atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE);
+
+	atl1c_phy_reset(&adapter->hw);
+	atl1c_reset_mac(&adapter->hw);
+	atl1c_phy_init(&adapter->hw);
+
+	netif_device_attach(netdev);
+	if (netif_running(netdev))
+		atl1c_up(adapter);
+
+	return 0;
+}
+#endif
+
+static void atl1c_shutdown(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	atl1c_suspend(&pdev->dev);
+	pci_wake_from_d3(pdev, adapter->wol);
+	pci_set_power_state(pdev, PCI_D3hot);
+}
+
+static const struct net_device_ops atl1c_netdev_ops = {
+	.ndo_open		= atl1c_open,
+	.ndo_stop		= atl1c_close,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_start_xmit		= atl1c_xmit_frame,
+	.ndo_set_mac_address	= atl1c_set_mac_addr,
+	.ndo_set_rx_mode	= atl1c_set_multi,
+	.ndo_change_mtu		= atl1c_change_mtu,
+	.ndo_fix_features	= atl1c_fix_features,
+	.ndo_set_features	= atl1c_set_features,
+	.ndo_eth_ioctl		= atl1c_ioctl,
+	.ndo_tx_timeout		= atl1c_tx_timeout,
+	.ndo_get_stats		= atl1c_get_stats,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= atl1c_netpoll,
+#endif
+};
+
+static int atl1c_init_netdev(struct net_device *netdev, struct pci_dev *pdev)
+{
+	SET_NETDEV_DEV(netdev, &pdev->dev);
+	pci_set_drvdata(pdev, netdev);
+
+	netdev->netdev_ops = &atl1c_netdev_ops;
+	netdev->watchdog_timeo = AT_TX_WATCHDOG;
+	netdev->min_mtu = ETH_ZLEN - (ETH_HLEN + VLAN_HLEN);
+	atl1c_set_ethtool_ops(netdev);
+
+	/* TODO: add when ready */
+	netdev->hw_features =	NETIF_F_SG		|
+				NETIF_F_HW_CSUM		|
+				NETIF_F_HW_VLAN_CTAG_RX	|
+				NETIF_F_TSO		|
+				NETIF_F_TSO6;
+	netdev->features =	netdev->hw_features	|
+				NETIF_F_HW_VLAN_CTAG_TX;
+	return 0;
+}
+
+/**
+ * atl1c_probe - Device Initialization Routine
+ * @pdev: PCI device information struct
+ * @ent: entry in atl1c_pci_tbl
+ *
+ * Returns 0 on success, negative on failure
+ *
+ * atl1c_probe initializes an adapter identified by a pci_dev structure.
+ * The OS initialization, configuring of the adapter private structure,
+ * and a hardware reset occur.
+ */
+static int atl1c_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct net_device *netdev;
+	struct atl1c_adapter *adapter;
+	static int cards_found;
+	u8 __iomem *hw_addr;
+	enum atl1c_nic_type nic_type;
+	u32 queue_count = 1;
+	int err = 0;
+	int i;
+
+	/* enable device (incl. PCI PM wakeup and hotplug setup) */
+	err = pci_enable_device_mem(pdev);
+	if (err)
+		return dev_err_probe(&pdev->dev, err, "cannot enable PCI device\n");
+
+	/*
+	 * The atl1c chip can DMA to 64-bit addresses, but it uses a single
+	 * shared register for the high 32 bits, so only a single, aligned,
+	 * 4 GB physical address range can be used at a time.
+	 *
+	 * Supporting 64-bit DMA on this hardware is more trouble than it's
+	 * worth.  It is far easier to limit to 32-bit DMA than update
+	 * various kernel subsystems to support the mechanics required by a
+	 * fixed-high-32-bit system.
+	 */
+	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (err) {
+		dev_err(&pdev->dev, "No usable DMA configuration,aborting\n");
+		goto err_dma;
+	}
+
+	err = pci_request_regions(pdev, atl1c_driver_name);
+	if (err) {
+		dev_err(&pdev->dev, "cannot obtain PCI resources\n");
+		goto err_pci_reg;
+	}
+
+	pci_set_master(pdev);
+
+	hw_addr = pci_ioremap_bar(pdev, 0);
+	if (!hw_addr) {
+		err = -EIO;
+		dev_err(&pdev->dev, "cannot map device registers\n");
+		goto err_ioremap;
+	}
+
+	nic_type = atl1c_get_mac_type(pdev, hw_addr);
+	if (nic_type == athr_mt)
+		queue_count = 4;
+
+	netdev = alloc_etherdev_mq(sizeof(struct atl1c_adapter), queue_count);
+	if (netdev == NULL) {
+		err = -ENOMEM;
+		goto err_alloc_etherdev;
+	}
+
+	err = atl1c_init_netdev(netdev, pdev);
+	if (err) {
+		dev_err(&pdev->dev, "init netdevice failed\n");
+		goto err_init_netdev;
+	}
+	adapter = netdev_priv(netdev);
+	adapter->bd_number = cards_found;
+	adapter->netdev = netdev;
+	adapter->pdev = pdev;
+	adapter->hw.adapter = adapter;
+	adapter->hw.nic_type = nic_type;
+	adapter->msg_enable = netif_msg_init(-1, atl1c_default_msg);
+	adapter->hw.hw_addr = hw_addr;
+	adapter->tx_queue_count = queue_count;
+	adapter->rx_queue_count = queue_count;
+
+	/* init mii data */
+	adapter->mii.dev = netdev;
+	adapter->mii.mdio_read  = atl1c_mdio_read;
+	adapter->mii.mdio_write = atl1c_mdio_write;
+	adapter->mii.phy_id_mask = 0x1f;
+	adapter->mii.reg_num_mask = MDIO_CTRL_REG_MASK;
+	dev_set_threaded(netdev, true);
+	for (i = 0; i < adapter->rx_queue_count; ++i)
+		netif_napi_add(netdev, &adapter->rrd_ring[i].napi,
+			       atl1c_clean_rx);
+	for (i = 0; i < adapter->tx_queue_count; ++i)
+		netif_napi_add_tx(netdev, &adapter->tpd_ring[i].napi,
+				  atl1c_clean_tx);
+	timer_setup(&adapter->phy_config_timer, atl1c_phy_config, 0);
+	/* setup the private structure */
+	err = atl1c_sw_init(adapter);
+	if (err) {
+		dev_err(&pdev->dev, "net device private data init failed\n");
+		goto err_sw_init;
+	}
+	/* set max MTU */
+	atl1c_set_max_mtu(netdev);
+
+	atl1c_reset_pcie(&adapter->hw, ATL1C_PCIE_L0S_L1_DISABLE);
+
+	/* Init GPHY as early as possible due to power saving issue  */
+	atl1c_phy_reset(&adapter->hw);
+
+	err = atl1c_reset_mac(&adapter->hw);
+	if (err) {
+		err = -EIO;
+		goto err_reset;
+	}
+
+	/* reset the controller to
+	 * put the device in a known good starting state */
+	err = atl1c_phy_init(&adapter->hw);
+	if (err) {
+		err = -EIO;
+		goto err_reset;
+	}
+	if (atl1c_read_mac_addr(&adapter->hw)) {
+		/* got a random MAC address, set NET_ADDR_RANDOM to netdev */
+		netdev->addr_assign_type = NET_ADDR_RANDOM;
+	}
+	eth_hw_addr_set(netdev, adapter->hw.mac_addr);
+	if (netif_msg_probe(adapter))
+		dev_dbg(&pdev->dev, "mac address : %pM\n",
+			adapter->hw.mac_addr);
+
+	atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.mac_addr);
+	INIT_WORK(&adapter->common_task, atl1c_common_task);
+	adapter->work_event = 0;
+	err = register_netdev(netdev);
+	if (err) {
+		dev_err(&pdev->dev, "register netdevice failed\n");
+		goto err_register;
+	}
+
+	cards_found++;
+	return 0;
+
+err_reset:
+err_register:
+err_sw_init:
+err_init_netdev:
+	free_netdev(netdev);
+err_alloc_etherdev:
+	iounmap(hw_addr);
+err_ioremap:
+	pci_release_regions(pdev);
+err_pci_reg:
+err_dma:
+	pci_disable_device(pdev);
+	return err;
+}
+
+/**
+ * atl1c_remove - Device Removal Routine
+ * @pdev: PCI device information struct
+ *
+ * atl1c_remove is called by the PCI subsystem to alert the driver
+ * that it should release a PCI device.  The could be caused by a
+ * Hot-Plug event, or because the driver is going to be removed from
+ * memory.
+ */
+static void atl1c_remove(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	unregister_netdev(netdev);
+	/* restore permanent address */
+	atl1c_hw_set_mac_addr(&adapter->hw, adapter->hw.perm_mac_addr);
+	atl1c_phy_disable(&adapter->hw);
+
+	iounmap(adapter->hw.hw_addr);
+
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	free_netdev(netdev);
+}
+
+/**
+ * atl1c_io_error_detected - called when PCI error is detected
+ * @pdev: Pointer to PCI device
+ * @state: The current pci connection state
+ *
+ * This function is called after a PCI bus error affecting
+ * this device has been detected.
+ */
+static pci_ers_result_t atl1c_io_error_detected(struct pci_dev *pdev,
+						pci_channel_state_t state)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	netif_device_detach(netdev);
+
+	if (state == pci_channel_io_perm_failure)
+		return PCI_ERS_RESULT_DISCONNECT;
+
+	if (netif_running(netdev))
+		atl1c_down(adapter);
+
+	pci_disable_device(pdev);
+
+	/* Request a slot reset. */
+	return PCI_ERS_RESULT_NEED_RESET;
+}
+
+/**
+ * atl1c_io_slot_reset - called after the pci bus has been reset.
+ * @pdev: Pointer to PCI device
+ *
+ * Restart the card from scratch, as if from a cold-boot. Implementation
+ * resembles the first-half of the e1000_resume routine.
+ */
+static pci_ers_result_t atl1c_io_slot_reset(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	if (pci_enable_device(pdev)) {
+		if (netif_msg_hw(adapter))
+			dev_err(&pdev->dev,
+				"Cannot re-enable PCI device after reset\n");
+		return PCI_ERS_RESULT_DISCONNECT;
+	}
+	pci_set_master(pdev);
+
+	pci_enable_wake(pdev, PCI_D3hot, 0);
+	pci_enable_wake(pdev, PCI_D3cold, 0);
+
+	atl1c_reset_mac(&adapter->hw);
+
+	return PCI_ERS_RESULT_RECOVERED;
+}
+
+/**
+ * atl1c_io_resume - called when traffic can start flowing again.
+ * @pdev: Pointer to PCI device
+ *
+ * This callback is called when the error recovery driver tells us that
+ * its OK to resume normal operation. Implementation resembles the
+ * second-half of the atl1c_resume routine.
+ */
+static void atl1c_io_resume(struct pci_dev *pdev)
+{
+	struct net_device *netdev = pci_get_drvdata(pdev);
+	struct atl1c_adapter *adapter = netdev_priv(netdev);
+
+	if (netif_running(netdev)) {
+		if (atl1c_up(adapter)) {
+			if (netif_msg_hw(adapter))
+				dev_err(&pdev->dev,
+					"Cannot bring device back up after reset\n");
+			return;
+		}
+	}
+
+	netif_device_attach(netdev);
+}
+
+static const struct pci_error_handlers atl1c_err_handler = {
+	.error_detected = atl1c_io_error_detected,
+	.slot_reset = atl1c_io_slot_reset,
+	.resume = atl1c_io_resume,
+};
+
+static SIMPLE_DEV_PM_OPS(atl1c_pm_ops, atl1c_suspend, atl1c_resume);
+
+static struct pci_driver atl1c_driver = {
+	.name     = atl1c_driver_name,
+	.id_table = atl1c_pci_tbl,
+	.probe    = atl1c_probe,
+	.remove   = atl1c_remove,
+	.shutdown = atl1c_shutdown,
+	.err_handler = &atl1c_err_handler,
+	.driver.pm = &atl1c_pm_ops,
+};
+
+module_pci_driver(atl1c_driver);