drivers/net/e1000.h

/*******************************************************************************


  Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved.

  This program is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by the Free
  Software Foundation; either version 2 of the License, or (at your option)
  any later version.

  This program is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc., 59
  Temple Place - Suite 330, Boston, MA	02111-1307, USA.

  The full GNU General Public License is included in this distribution in the
  file called LICENSE.

  Contact Information:
  Linux NICS <linux.nics@intel.com>
  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

*******************************************************************************/

/* e1000_hw.h
 * Structures, enums, and macros for the MAC
 */

#ifndef _E1000_HW_H_
#define _E1000_HW_H_

#include <common.h>
#include <malloc.h>
#include <net.h>
#include <asm/io.h>
#include <pci.h>

#define E1000_ERR(args...) printf("e1000: " args)

#ifdef E1000_DEBUG
#define E1000_DBG(args...)	printf("e1000: " args)
#define DEBUGOUT(fmt,args...) printf(fmt ,##args)
#define DEBUGFUNC()	   printf("%s\n", __FUNCTION__);
#else
#define E1000_DBG(args...)
#define DEBUGFUNC()
#define DEBUGOUT(fmt,args...)
#endif

/* Forward declarations of structures used by the shared code */
struct e1000_hw;
struct e1000_hw_stats;

typedef enum {
	FALSE = 0,
	TRUE = 1
} boolean_t;

/* Enumerated types specific to the e1000 hardware */
/* Media Access Controlers */
typedef enum {
	e1000_undefined = 0,
	e1000_82542_rev2_0,
	e1000_82542_rev2_1,
	e1000_82543,
	e1000_82544,
	e1000_82540,
	e1000_82545,
	e1000_82546,
	e1000_82541,
	e1000_82541_rev_2,
	e1000_num_macs
} e1000_mac_type;

/* Media Types */
typedef enum {
	e1000_media_type_copper = 0,
	e1000_media_type_fiber = 1,
	e1000_num_media_types
} e1000_media_type;

typedef enum {
	e1000_10_half = 0,
	e1000_10_full = 1,
	e1000_100_half = 2,
	e1000_100_full = 3
} e1000_speed_duplex_type;

typedef enum {
	e1000_lan_a = 0,
	e1000_lan_b = 1
} e1000_lan_loc;

/* Flow Control Settings */
typedef enum {
	e1000_fc_none = 0,
	e1000_fc_rx_pause = 1,
	e1000_fc_tx_pause = 2,
	e1000_fc_full = 3,
	e1000_fc_default = 0xFF
} e1000_fc_type;

/* PCI bus types */
typedef enum {
	e1000_bus_type_unknown = 0,
	e1000_bus_type_pci,
	e1000_bus_type_pcix
} e1000_bus_type;

/* PCI bus speeds */
typedef enum {
	e1000_bus_speed_unknown = 0,
	e1000_bus_speed_33,
	e1000_bus_speed_66,
	e1000_bus_speed_100,
	e1000_bus_speed_133,
	e1000_bus_speed_reserved
} e1000_bus_speed;

/* PCI bus widths */
typedef enum {
	e1000_bus_width_unknown = 0,
	e1000_bus_width_32,
	e1000_bus_width_64
} e1000_bus_width;

/* PHY status info structure and supporting enums */
typedef enum {
	e1000_cable_length_50 = 0,
	e1000_cable_length_50_80,
	e1000_cable_length_80_110,
	e1000_cable_length_110_140,
	e1000_cable_length_140,
	e1000_cable_length_undefined = 0xFF
} e1000_cable_length;

typedef enum {
	e1000_10bt_ext_dist_enable_normal = 0,
	e1000_10bt_ext_dist_enable_lower,
	e1000_10bt_ext_dist_enable_undefined = 0xFF
} e1000_10bt_ext_dist_enable;

typedef enum {
	e1000_rev_polarity_normal = 0,
	e1000_rev_polarity_reversed,
	e1000_rev_polarity_undefined = 0xFF
} e1000_rev_polarity;

typedef enum {
	e1000_polarity_reversal_enabled = 0,
	e1000_polarity_reversal_disabled,
	e1000_polarity_reversal_undefined = 0xFF
} e1000_polarity_reversal;

typedef enum {
	e1000_auto_x_mode_manual_mdi = 0,
	e1000_auto_x_mode_manual_mdix,
	e1000_auto_x_mode_auto1,
	e1000_auto_x_mode_auto2,
	e1000_auto_x_mode_undefined = 0xFF
} e1000_auto_x_mode;

typedef enum {
	e1000_1000t_rx_status_not_ok = 0,
	e1000_1000t_rx_status_ok,
	e1000_1000t_rx_status_undefined = 0xFF
} e1000_1000t_rx_status;

typedef enum {
    e1000_phy_m88 = 0,
    e1000_phy_igp,
    e1000_phy_igp_2,
    e1000_phy_undefined = 0xFF
} e1000_phy_type;

struct e1000_phy_info {
	e1000_cable_length cable_length;
	e1000_10bt_ext_dist_enable extended_10bt_distance;
	e1000_rev_polarity cable_polarity;
	e1000_polarity_reversal polarity_correction;
	e1000_auto_x_mode mdix_mode;
	e1000_1000t_rx_status local_rx;
	e1000_1000t_rx_status remote_rx;
};

struct e1000_phy_stats {
	uint32_t idle_errors;
	uint32_t receive_errors;
};

/* Error Codes */
#define E1000_SUCCESS				0
#define E1000_ERR_EEPROM			1
#define E1000_ERR_PHY				2
#define E1000_ERR_CONFIG			3
#define E1000_ERR_PARAM				4
#define E1000_ERR_MAC_TYPE			5
#define E1000_ERR_PHY_TYPE			6
#define E1000_ERR_NOLINK			7
#define E1000_ERR_TIMEOUT			8
#define E1000_ERR_RESET				9
#define E1000_ERR_MASTER_REQUESTS_PENDING	10
#define E1000_ERR_HOST_INTERFACE_COMMAND	11
#define E1000_BLK_PHY_RESET			12

/* PCI Device IDs */
#define E1000_DEV_ID_82542	    0x1000
#define E1000_DEV_ID_82543GC_FIBER  0x1001
#define E1000_DEV_ID_82543GC_COPPER 0x1004
#define E1000_DEV_ID_82544EI_COPPER 0x1008
#define E1000_DEV_ID_82544EI_FIBER  0x1009
#define E1000_DEV_ID_82544GC_COPPER 0x100C
#define E1000_DEV_ID_82544GC_LOM    0x100D
#define E1000_DEV_ID_82540EM	    0x100E
#define E1000_DEV_ID_82540EM_LOM    0x1015
#define E1000_DEV_ID_82545EM_COPPER 0x100F
#define E1000_DEV_ID_82545EM_FIBER  0x1011
#define E1000_DEV_ID_82546EB_COPPER 0x1010
#define E1000_DEV_ID_82546EB_FIBER  0x1012
#define E1000_DEV_ID_82541ER	    0x1078
#define NUM_DEV_IDS 14

#define NODE_ADDRESS_SIZE 6
#define ETH_LENGTH_OF_ADDRESS 6

/* MAC decode size is 128K - This is the size of BAR0 */
#define MAC_DECODE_SIZE (128 * 1024)

#define E1000_82542_2_0_REV_ID 2
#define E1000_82542_2_1_REV_ID 3

#define SPEED_10    10
#define SPEED_100   100
#define SPEED_1000  1000
#define HALF_DUPLEX 1
#define FULL_DUPLEX 2

/* The sizes (in bytes) of a ethernet packet */
#define ENET_HEADER_SIZE	     14
#define MAXIMUM_ETHERNET_FRAME_SIZE  1518	/* With FCS */
#define MINIMUM_ETHERNET_FRAME_SIZE  64	/* With FCS */
#define ETHERNET_FCS_SIZE	     4
#define MAXIMUM_ETHERNET_PACKET_SIZE \
    (MAXIMUM_ETHERNET_FRAME_SIZE - ETHERNET_FCS_SIZE)
#define MINIMUM_ETHERNET_PACKET_SIZE \
    (MINIMUM_ETHERNET_FRAME_SIZE - ETHERNET_FCS_SIZE)
#define CRC_LENGTH		     ETHERNET_FCS_SIZE
#define MAX_JUMBO_FRAME_SIZE	     0x3F00

/* 802.1q VLAN Packet Sizes */
#define VLAN_TAG_SIZE			  4	/* 802.3ac tag (not DMAed) */

/* Ethertype field values */
#define ETHERNET_IEEE_VLAN_TYPE 0x8100	/* 802.3ac packet */
#define ETHERNET_IP_TYPE	0x0800	/* IP packets */
#define ETHERNET_ARP_TYPE	0x0806	/* Address Resolution Protocol (ARP) */

/* Packet Header defines */
#define IP_PROTOCOL_TCP    6
#define IP_PROTOCOL_UDP    0x11

/* This defines the bits that are set in the Interrupt Mask
 * Set/Read Register.  Each bit is documented below:
 *   o RXDMT0 = Receive Descriptor Minimum Threshold hit (ring 0)
 *   o RXSEQ  = Receive Sequence Error
 */
#define POLL_IMS_ENABLE_MASK ( \
    E1000_IMS_RXDMT0 |	       \
    E1000_IMS_RXSEQ)

/* This defines the bits that are set in the Interrupt Mask
 * Set/Read Register.  Each bit is documented below:
 *   o RXT0   = Receiver Timer Interrupt (ring 0)
 *   o TXDW   = Transmit Descriptor Written Back
 *   o RXDMT0 = Receive Descriptor Minimum Threshold hit (ring 0)
 *   o RXSEQ  = Receive Sequence Error
 *   o LSC    = Link Status Change
 */
#define IMS_ENABLE_MASK ( \
    E1000_IMS_RXT0   |	  \
    E1000_IMS_TXDW   |	  \
    E1000_IMS_RXDMT0 |	  \
    E1000_IMS_RXSEQ  |	  \
    E1000_IMS_LSC)

/* The number of high/low register pairs in the RAR. The RAR (Receive Address
 * Registers) holds the directed and multicast addresses that we monitor. We
 * reserve one of these spots for our directed address, allowing us room for
 * E1000_RAR_ENTRIES - 1 multicast addresses.
 */
#define E1000_RAR_ENTRIES 16

#define MIN_NUMBER_OF_DESCRIPTORS 8
#define MAX_NUMBER_OF_DESCRIPTORS 0xFFF8

/* Receive Descriptor */
struct e1000_rx_desc {
	uint64_t buffer_addr;	/* Address of the descriptor's data buffer */
	uint16_t length;	/* Length of data DMAed into data buffer */
	uint16_t csum;		/* Packet checksum */
	uint8_t status;		/* Descriptor status */
	uint8_t errors;		/* Descriptor Errors */
	uint16_t special;
};

/* Receive Decriptor bit definitions */
#define E1000_RXD_STAT_DD	0x01	/* Descriptor Done */
#define E1000_RXD_STAT_EOP	0x02	/* End of Packet */
#define E1000_RXD_STAT_IXSM	0x04	/* Ignore checksum */
#define E1000_RXD_STAT_VP	0x08	/* IEEE VLAN Packet */
#define E1000_RXD_STAT_TCPCS	0x20	/* TCP xsum calculated */
#define E1000_RXD_STAT_IPCS	0x40	/* IP xsum calculated */
#define E1000_RXD_STAT_PIF	0x80	/* passed in-exact filter */
#define E1000_RXD_ERR_CE	0x01	/* CRC Error */
#define E1000_RXD_ERR_SE	0x02	/* Symbol Error */
#define E1000_RXD_ERR_SEQ	0x04	/* Sequence Error */
#define E1000_RXD_ERR_CXE	0x10	/* Carrier Extension Error */
#define E1000_RXD_ERR_TCPE	0x20	/* TCP/UDP Checksum Error */
#define E1000_RXD_ERR_IPE	0x40	/* IP Checksum Error */
#define E1000_RXD_ERR_RXE	0x80	/* Rx Data Error */
#define E1000_RXD_SPC_VLAN_MASK 0x0FFF	/* VLAN ID is in lower 12 bits */
#define E1000_RXD_SPC_PRI_MASK	0xE000	/* Priority is in upper 3 bits */
#define E1000_RXD_SPC_PRI_SHIFT 0x000D	/* Priority is in upper 3 of 16 */
#define E1000_RXD_SPC_CFI_MASK	0x1000	/* CFI is bit 12 */
#define E1000_RXD_SPC_CFI_SHIFT 0x000C	/* CFI is bit 12 */

/* mask to determine if packets should be dropped due to frame errors */
#define E1000_RXD_ERR_FRAME_ERR_MASK ( \
    E1000_RXD_ERR_CE  |		       \
    E1000_RXD_ERR_SE  |		       \
    E1000_RXD_ERR_SEQ |		       \
    E1000_RXD_ERR_CXE |		       \
    E1000_RXD_ERR_RXE)

/* Transmit Descriptor */
struct e1000_tx_desc {
	uint64_t buffer_addr;	/* Address of the descriptor's data buffer */
	union {
		uint32_t data;
		struct {
			uint16_t length;	/* Data buffer length */
			uint8_t cso;	/* Checksum offset */
			uint8_t cmd;	/* Descriptor control */
		} flags;
	} lower;
	union {
		uint32_t data;
		struct {
			uint8_t status;	/* Descriptor status */
			uint8_t css;	/* Checksum start */
			uint16_t special;
		} fields;
	} upper;
};

/* Transmit Descriptor bit definitions */
#define E1000_TXD_DTYP_D     0x00100000	/* Data Descriptor */
#define E1000_TXD_DTYP_C     0x00000000	/* Context Descriptor */
#define E1000_TXD_POPTS_IXSM 0x01	/* Insert IP checksum */
#define E1000_TXD_POPTS_TXSM 0x02	/* Insert TCP/UDP checksum */
#define E1000_TXD_CMD_EOP    0x01000000	/* End of Packet */
#define E1000_TXD_CMD_IFCS   0x02000000	/* Insert FCS (Ethernet CRC) */
#define E1000_TXD_CMD_IC     0x04000000	/* Insert Checksum */
#define E1000_TXD_CMD_RS     0x08000000	/* Report Status */
#define E1000_TXD_CMD_RPS    0x10000000	/* Report Packet Sent */
#define E1000_TXD_CMD_DEXT   0x20000000	/* Descriptor extension (0 = legacy) */
#define E1000_TXD_CMD_VLE    0x40000000	/* Add VLAN tag */
#define E1000_TXD_CMD_IDE    0x80000000	/* Enable Tidv register */
#define E1000_TXD_STAT_DD    0x00000001	/* Descriptor Done */
#define E1000_TXD_STAT_EC    0x00000002	/* Excess Collisions */
#define E1000_TXD_STAT_LC    0x00000004	/* Late Collisions */
#define E1000_TXD_STAT_TU    0x00000008	/* Transmit underrun */
#define E1000_TXD_CMD_TCP    0x01000000	/* TCP packet */
#define E1000_TXD_CMD_IP     0x02000000	/* IP packet */
#define E1000_TXD_CMD_TSE    0x04000000	/* TCP Seg enable */
#define E1000_TXD_STAT_TC    0x00000004	/* Tx Underrun */

/* Offload Context Descriptor */
struct e1000_context_desc {
	union {
		uint32_t ip_config;
		struct {
			uint8_t ipcss;	/* IP checksum start */
			uint8_t ipcso;	/* IP checksum offset */
			uint16_t ipcse;	/* IP checksum end */
		} ip_fields;
	} lower_setup;
	union {
		uint32_t tcp_config;
		struct {
			uint8_t tucss;	/* TCP checksum start */
			uint8_t tucso;	/* TCP checksum offset */
			uint16_t tucse;	/* TCP checksum end */
		} tcp_fields;
	} upper_setup;
	uint32_t cmd_and_length;	/* */
	union {
		uint32_t data;
		struct {
			uint8_t status;	/* Descriptor status */
			uint8_t hdr_len;	/* Header length */
			uint16_t mss;	/* Maximum segment size */
		} fields;
	} tcp_seg_setup;
};

/* Offload data descriptor */
struct e1000_data_desc {
	uint64_t buffer_addr;	/* Address of the descriptor's buffer address */
	union {
		uint32_t data;
		struct {
			uint16_t length;	/* Data buffer length */
			uint8_t typ_len_ext;	/* */
			uint8_t cmd;	/* */
		} flags;
	} lower;
	union {
		uint32_t data;
		struct {
			uint8_t status;	/* Descriptor status */
			uint8_t popts;	/* Packet Options */
			uint16_t special;	/* */
		} fields;
	} upper;
};

/* Filters */
#define E1000_NUM_UNICAST	   16	/* Unicast filter entries */
#define E1000_MC_TBL_SIZE	   128	/* Multicast Filter Table (4096 bits) */
#define E1000_VLAN_FILTER_TBL_SIZE 128	/* VLAN Filter Table (4096 bits) */

/* Receive Address Register */
struct e1000_rar {
	volatile uint32_t low;	/* receive address low */
	volatile uint32_t high;	/* receive address high */
};

/* The number of entries in the Multicast Table Array (MTA). */
#define E1000_NUM_MTA_REGISTERS 128

/* IPv4 Address Table Entry */
struct e1000_ipv4_at_entry {
	volatile uint32_t ipv4_addr;	/* IP Address (RW) */
	volatile uint32_t reserved;
};

/* Four wakeup IP addresses are supported */
#define E1000_WAKEUP_IP_ADDRESS_COUNT_MAX 4
#define E1000_IP4AT_SIZE		  E1000_WAKEUP_IP_ADDRESS_COUNT_MAX
#define E1000_IP6AT_SIZE		  1

/* IPv6 Address Table Entry */
struct e1000_ipv6_at_entry {
	volatile uint8_t ipv6_addr[16];
};

/* Flexible Filter Length Table Entry */
struct e1000_fflt_entry {
	volatile uint32_t length;	/* Flexible Filter Length (RW) */
	volatile uint32_t reserved;
};

/* Flexible Filter Mask Table Entry */
struct e1000_ffmt_entry {
	volatile uint32_t mask;	/* Flexible Filter Mask (RW) */
	volatile uint32_t reserved;
};

/* Flexible Filter Value Table Entry */
struct e1000_ffvt_entry {
	volatile uint32_t value;	/* Flexible Filter Value (RW) */
	volatile uint32_t reserved;
};

/* Four Flexible Filters are supported */
#define E1000_FLEXIBLE_FILTER_COUNT_MAX 4

/* Each Flexible Filter is at most 128 (0x80) bytes in length */
#define E1000_FLEXIBLE_FILTER_SIZE_MAX	128

#define E1000_FFLT_SIZE E1000_FLEXIBLE_FILTER_COUNT_MAX
#define E1000_FFMT_SIZE E1000_FLEXIBLE_FILTER_SIZE_MAX
#define E1000_FFVT_SIZE E1000_FLEXIBLE_FILTER_SIZE_MAX

/* Register Set. (82543, 82544)
 *
 * Registers are defined to be 32 bits and  should be accessed as 32 bit values.
 * These registers are physically located on the NIC, but are mapped into the
 * host memory address space.
 *
 * RW - register is both readable and writable
 * RO - register is read only
 * WO - register is write only
 * R/clr - register is read only and is cleared when read
 * A - register array
 */
#define E1000_CTRL     0x00000	/* Device Control - RW */
#define E1000_STATUS   0x00008	/* Device Status - RO */
#define E1000_EECD     0x00010	/* EEPROM/Flash Control - RW */
#define E1000_EERD     0x00014	/* EEPROM Read - RW */
#define E1000_CTRL_EXT 0x00018	/* Extended Device Control - RW */
#define E1000_MDIC     0x00020	/* MDI Control - RW */
#define E1000_FCAL     0x00028	/* Flow Control Address Low - RW */
#define E1000_FCAH     0x0002C	/* Flow Control Address High -RW */
#define E1000_FCT      0x00030	/* Flow Control Type - RW */
#define E1000_VET      0x00038	/* VLAN Ether Type - RW */
#define E1000_ICR      0x000C0	/* Interrupt Cause Read - R/clr */
#define E1000_ITR      0x000C4	/* Interrupt Throttling Rate - RW */
#define E1000_ICS      0x000C8	/* Interrupt Cause Set - WO */
#define E1000_IMS      0x000D0	/* Interrupt Mask Set - RW */
#define E1000_IMC      0x000D8	/* Interrupt Mask Clear - WO */
#define E1000_RCTL     0x00100	/* RX Control - RW */
#define E1000_FCTTV    0x00170	/* Flow Control Transmit Timer Value - RW */
#define E1000_TXCW     0x00178	/* TX Configuration Word - RW */
#define E1000_RXCW     0x00180	/* RX Configuration Word - RO */
#define E1000_TCTL     0x00400	/* TX Control - RW */
#define E1000_TIPG     0x00410	/* TX Inter-packet gap -RW */
#define E1000_TBT      0x00448	/* TX Burst Timer - RW */
#define E1000_AIT      0x00458	/* Adaptive Interframe Spacing Throttle - RW */
#define E1000_LEDCTL   0x00E00	/* LED Control - RW */
#define E1000_PBA      0x01000	/* Packet Buffer Allocation - RW */
#define E1000_FCRTL    0x02160	/* Flow Control Receive Threshold Low - RW */
#define E1000_FCRTH    0x02168	/* Flow Control Receive Threshold High - RW */
#define E1000_RDBAL    0x02800	/* RX Descriptor Base Address Low - RW */
#define E1000_RDBAH    0x02804	/* RX Descriptor Base Address High - RW */
#define E1000_RDLEN    0x02808	/* RX Descriptor Length - RW */
#define E1000_RDH      0x02810	/* RX Descriptor Head - RW */
#define E1000_RDT      0x02818	/* RX Descriptor Tail - RW */
#define E1000_RDTR     0x02820	/* RX Delay Timer - RW */
#define E1000_RXDCTL   0x02828	/* RX Descriptor Control - RW */
#define E1000_RADV     0x0282C	/* RX Interrupt Absolute Delay Timer - RW */
#define E1000_RSRPD    0x02C00	/* RX Small Packet Detect - RW */
#define E1000_TXDMAC   0x03000	/* TX DMA Control - RW */
#define E1000_TDBAL    0x03800	/* TX Descriptor Base Address Low - RW */
#define E1000_TDBAH    0x03804	/* TX Descriptor Base Address High - RW */
#define E1000_TDLEN    0x03808	/* TX Descriptor Length - RW */
#define E1000_TDH      0x03810	/* TX Descriptor Head - RW */
#define E1000_TDT      0x03818	/* TX Descripotr Tail - RW */
#define E1000_TIDV     0x03820	/* TX Interrupt Delay Value - RW */
#define E1000_TXDCTL   0x03828	/* TX Descriptor Control - RW */
#define E1000_TADV     0x0382C	/* TX Interrupt Absolute Delay Val - RW */
#define E1000_TSPMT    0x03830	/* TCP Segmentation PAD & Min Threshold - RW */
#define E1000_CRCERRS  0x04000	/* CRC Error Count - R/clr */
#define E1000_ALGNERRC 0x04004	/* Alignment Error Count - R/clr */
#define E1000_SYMERRS  0x04008	/* Symbol Error Count - R/clr */
#define E1000_RXERRC   0x0400C	/* Receive Error Count - R/clr */
#define E1000_MPC      0x04010	/* Missed Packet Count - R/clr */
#define E1000_SCC      0x04014	/* Single Collision Count - R/clr */
#define E1000_ECOL     0x04018	/* Excessive Collision Count - R/clr */
#define E1000_MCC      0x0401C	/* Multiple Collision Count - R/clr */
#define E1000_LATECOL  0x04020	/* Late Collision Count - R/clr */
#define E1000_COLC     0x04028	/* Collision Count - R/clr */
#define E1000_DC       0x04030	/* Defer Count - R/clr */
#define E1000_TNCRS    0x04034	/* TX-No CRS - R/clr */
#define E1000_SEC      0x04038	/* Sequence Error Count - R/clr */
#define E1000_CEXTERR  0x0403C	/* Carrier Extension Error Count - R/clr */
#define E1000_RLEC     0x04040	/* Receive Length Error Count - R/clr */
#define E1000_XONRXC   0x04048	/* XON RX Count - R/clr */
#define E1000_XONTXC   0x0404C	/* XON TX Count - R/clr */
#define E1000_XOFFRXC  0x04050	/* XOFF RX Count - R/clr */
#define E1000_XOFFTXC  0x04054	/* XOFF TX Count - R/clr */
#define E1000_FCRUC    0x04058	/* Flow Control RX Unsupported Count- R/clr */
#define E1000_PRC64    0x0405C	/* Packets RX (64 bytes) - R/clr */
#define E1000_PRC127   0x04060	/* Packets RX (65-127 bytes) - R/clr */
#define E1000_PRC255   0x04064	/* Packets RX (128-255 bytes) - R/clr */
#define E1000_PRC511   0x04068	/* Packets RX (255-511 bytes) - R/clr */
#define E1000_PRC1023  0x0406C	/* Packets RX (512-1023 bytes) - R/clr */
#define E1000_PRC1522  0x04070	/* Packets RX (1024-1522 bytes) - R/clr */
#define E1000_GPRC     0x04074	/* Good Packets RX Count - R/clr */
#define E1000_BPRC     0x04078	/* Broadcast Packets RX Count - R/clr */
#define E1000_MPRC     0x0407C	/* Multicast Packets RX Count - R/clr */
#define E1000_GPTC     0x04080	/* Good Packets TX Count - R/clr */
#define E1000_GORCL    0x04088	/* Good Octets RX Count Low - R/clr */
#define E1000_GORCH    0x0408C	/* Good Octets RX Count High - R/clr */
#define E1000_GOTCL    0x04090	/* Good Octets TX Count Low - R/clr */
#define E1000_GOTCH    0x04094	/* Good Octets TX Count High - R/clr */
#define E1000_RNBC     0x040A0	/* RX No Buffers Count - R/clr */
#define E1000_RUC      0x040A4	/* RX Undersize Count - R/clr */
#define E1000_RFC      0x040A8	/* RX Fragment Count - R/clr */
#define E1000_ROC      0x040AC	/* RX Oversize Count - R/clr */
#define E1000_RJC      0x040B0	/* RX Jabber Count - R/clr */
#define E1000_MGTPRC   0x040B4	/* Management Packets RX Count - R/clr */
#define E1000_MGTPDC   0x040B8	/* Management Packets Dropped Count - R/clr */
#define E1000_MGTPTC   0x040BC	/* Management Packets TX Count - R/clr */
#define E1000_TORL     0x040C0	/* Total Octets RX Low - R/clr */
#define E1000_TORH     0x040C4	/* Total Octets RX High - R/clr */
#define E1000_TOTL     0x040C8	/* Total Octets TX Low - R/clr */
#define E1000_TOTH     0x040CC	/* Total Octets TX High - R/clr */
#define E1000_TPR      0x040D0	/* Total Packets RX - R/clr */
#define E1000_TPT      0x040D4	/* Total Packets TX - R/clr */
#define E1000_PTC64    0x040D8	/* Packets TX (64 bytes) - R/clr */
#define E1000_PTC127   0x040DC	/* Packets TX (65-127 bytes) - R/clr */
#define E1000_PTC255   0x040E0	/* Packets TX (128-255 bytes) - R/clr */
#define E1000_PTC511   0x040E4	/* Packets TX (256-511 bytes) - R/clr */
#define E1000_PTC1023  0x040E8	/* Packets TX (512-1023 bytes) - R/clr */
#define E1000_PTC1522  0x040EC	/* Packets TX (1024-1522 Bytes) - R/clr */
#define E1000_MPTC     0x040F0	/* Multicast Packets TX Count - R/clr */
#define E1000_BPTC     0x040F4	/* Broadcast Packets TX Count - R/clr */
#define E1000_TSCTC    0x040F8	/* TCP Segmentation Context TX - R/clr */
#define E1000_TSCTFC   0x040FC	/* TCP Segmentation Context TX Fail - R/clr */
#define E1000_RXCSUM   0x05000	/* RX Checksum Control - RW */
#define E1000_MTA      0x05200	/* Multicast Table Array - RW Array */
#define E1000_RA       0x05400	/* Receive Address - RW Array */
#define E1000_VFTA     0x05600	/* VLAN Filter Table Array - RW Array */
#define E1000_WUC      0x05800	/* Wakeup Control - RW */
#define E1000_WUFC     0x05808	/* Wakeup Filter Control - RW */
#define E1000_WUS      0x05810	/* Wakeup Status - RO */
#define E1000_MANC     0x05820	/* Management Control - RW */
#define E1000_IPAV     0x05838	/* IP Address Valid - RW */
#define E1000_IP4AT    0x05840	/* IPv4 Address Table - RW Array */
#define E1000_IP6AT    0x05880	/* IPv6 Address Table - RW Array */
#define E1000_WUPL     0x05900	/* Wakeup Packet Length - RW */
#define E1000_WUPM     0x05A00	/* Wakeup Packet Memory - RO A */
#define E1000_FFLT     0x05F00	/* Flexible Filter Length Table - RW Array */
#define E1000_FFMT     0x09000	/* Flexible Filter Mask Table - RW Array */
#define E1000_FFVT     0x09800	/* Flexible Filter Value Table - RW Array */

/* Register Set (82542)
 *
 * Some of the 82542 registers are located at different offsets than they are
 * in more current versions of the 8254x. Despite the difference in location,
 * the registers function in the same manner.
 */
#define E1000_82542_CTRL     E1000_CTRL
#define E1000_82542_STATUS   E1000_STATUS
#define E1000_82542_EECD     E1000_EECD
#define E1000_82542_EERD     E1000_EERD
#define E1000_82542_CTRL_EXT E1000_CTRL_EXT
#define E1000_82542_MDIC     E1000_MDIC
#define E1000_82542_FCAL     E1000_FCAL
#define E1000_82542_FCAH     E1000_FCAH
#define E1000_82542_FCT      E1000_FCT
#define E1000_82542_VET      E1000_VET
#define E1000_82542_RA	     0x00040
#define E1000_82542_ICR      E1000_ICR
#define E1000_82542_ITR      E1000_ITR
#define E1000_82542_ICS      E1000_ICS
#define E1000_82542_IMS      E1000_IMS
#define E1000_82542_IMC      E1000_IMC
#define E1000_82542_RCTL     E1000_RCTL
#define E1000_82542_RDTR     0x00108
#define E1000_82542_RDBAL    0x00110
#define E1000_82542_RDBAH    0x00114
#define E1000_82542_RDLEN    0x00118
#define E1000_82542_RDH      0x00120
#define E1000_82542_RDT      0x00128
#define E1000_82542_FCRTH    0x00160
#define E1000_82542_FCRTL    0x00168
#define E1000_82542_FCTTV    E1000_FCTTV
#define E1000_82542_TXCW     E1000_TXCW
#define E1000_82542_RXCW     E1000_RXCW
#define E1000_82542_MTA      0x00200
#define E1000_82542_TCTL     E1000_TCTL
#define E1000_82542_TIPG     E1000_TIPG
#define E1000_82542_TDBAL    0x00420
#define E1000_82542_TDBAH    0x00424
#define E1000_82542_TDLEN    0x00428
#define E1000_82542_TDH      0x00430
#define E1000_82542_TDT      0x00438
#define E1000_82542_TIDV     0x00440
#define E1000_82542_TBT      E1000_TBT
#define E1000_82542_AIT      E1000_AIT
#define E1000_82542_VFTA     0x00600
#define E1000_82542_LEDCTL   E1000_LEDCTL
#define E1000_82542_PBA      E1000_PBA
#define E1000_82542_RXDCTL   E1000_RXDCTL
#define E1000_82542_RADV     E1000_RADV
#define E1000_82542_RSRPD    E1000_RSRPD
#define E1000_82542_TXDMAC   E1000_TXDMAC
#define E1000_82542_TXDCTL   E1000_TXDCTL
#define E1000_82542_TADV     E1000_TADV
#define E1000_82542_TSPMT    E1000_TSPMT
#define E1000_82542_CRCERRS  E1000_CRCERRS
#define E1000_82542_ALGNERRC E1000_ALGNERRC
#define E1000_82542_SYMERRS  E1000_SYMERRS
#define E1000_82542_RXERRC   E1000_RXERRC
#define E1000_82542_MPC      E1000_MPC
#define E1000_82542_SCC      E1000_SCC
#define E1000_82542_ECOL     E1000_ECOL
#define E1000_82542_MCC      E1000_MCC
#define E1000_82542_LATECOL  E1000_LATECOL
#define E1000_82542_COLC     E1000_COLC
#define E1000_82542_DC	     E1000_DC
#define E1000_82542_TNCRS    E1000_TNCRS
#define E1000_82542_SEC      E1000_SEC
#define E1000_82542_CEXTERR  E1000_CEXTERR
#define E1000_82542_RLEC     E1000_RLEC
#define E1000_82542_XONRXC   E1000_XONRXC
#define E1000_82542_XONTXC   E1000_XONTXC
#define E1000_82542_XOFFRXC  E1000_XOFFRXC
#define E1000_82542_XOFFTXC  E1000_XOFFTXC
#define E1000_82542_FCRUC    E1000_FCRUC
#define E1000_82542_PRC64    E1000_PRC64
#define E1000_82542_PRC127   E1000_PRC127
#define E1000_82542_PRC255   E1000_PRC255
#define E1000_82542_PRC511   E1000_PRC511
#define E1000_82542_PRC1023  E1000_PRC1023
#define E1000_82542_PRC1522  E1000_PRC1522
#define E1000_82542_GPRC     E1000_GPRC
#define E1000_82542_BPRC     E1000_BPRC
#define E1000_82542_MPRC     E1000_MPRC
#define E1000_82542_GPTC     E1000_GPTC
#define E1000_82542_GORCL    E1000_GORCL
#define E1000_82542_GORCH    E1000_GORCH
#define E1000_82542_GOTCL    E1000_GOTCL
#define E1000_82542_GOTCH    E1000_GOTCH
#define E1000_82542_RNBC     E1000_RNBC
#define E1000_82542_RUC      E1000_RUC
#define E1000_82542_RFC      E1000_RFC
#define E1000_82542_ROC      E1000_ROC
#define E1000_82542_RJC      E1000_RJC
#define E1000_82542_MGTPRC   E1000_MGTPRC
#define E1000_82542_MGTPDC   E1000_MGTPDC
#define E1000_82542_MGTPTC   E1000_MGTPTC
#define E1000_82542_TORL     E1000_TORL
#define E1000_82542_TORH     E1000_TORH
#define E1000_82542_TOTL     E1000_TOTL
#define E1000_82542_TOTH     E1000_TOTH
#define E1000_82542_TPR      E1000_TPR
#define E1000_82542_TPT      E1000_TPT
#define E1000_82542_PTC64    E1000_PTC64
#define E1000_82542_PTC127   E1000_PTC127
#define E1000_82542_PTC255   E1000_PTC255
#define E1000_82542_PTC511   E1000_PTC511
#define E1000_82542_PTC1023  E1000_PTC1023
#define E1000_82542_PTC1522  E1000_PTC1522
#define E1000_82542_MPTC     E1000_MPTC
#define E1000_82542_BPTC     E1000_BPTC
#define E1000_82542_TSCTC    E1000_TSCTC
#define E1000_82542_TSCTFC   E1000_TSCTFC
#define E1000_82542_RXCSUM   E1000_RXCSUM
#define E1000_82542_WUC      E1000_WUC
#define E1000_82542_WUFC     E1000_WUFC
#define E1000_82542_WUS      E1000_WUS
#define E1000_82542_MANC     E1000_MANC
#define E1000_82542_IPAV     E1000_IPAV
#define E1000_82542_IP4AT    E1000_IP4AT
#define E1000_82542_IP6AT    E1000_IP6AT
#define E1000_82542_WUPL     E1000_WUPL
#define E1000_82542_WUPM     E1000_WUPM
#define E1000_82542_FFLT     E1000_FFLT
#define E1000_82542_FFMT     E1000_FFMT
#define E1000_82542_FFVT     E1000_FFVT

/* Statistics counters collected by the MAC */
struct e1000_hw_stats {
	uint64_t crcerrs;
	uint64_t algnerrc;
	uint64_t symerrs;
	uint64_t rxerrc;
	uint64_t mpc;
	uint64_t scc;
	uint64_t ecol;
	uint64_t mcc;
	uint64_t latecol;
	uint64_t colc;
	uint64_t dc;
	uint64_t tncrs;
	uint64_t sec;
	uint64_t cexterr;
	uint64_t rlec;
	uint64_t xonrxc;
	uint64_t xontxc;
	uint64_t xoffrxc;
	uint64_t xofftxc;
	uint64_t fcruc;
	uint64_t prc64;
	uint64_t prc127;
	uint64_t prc255;
	uint64_t prc511;
	uint64_t prc1023;
	uint64_t prc1522;
	uint64_t gprc;
	uint64_t bprc;
	uint64_t mprc;
	uint64_t gptc;
	uint64_t gorcl;
	uint64_t gorch;
	uint64_t gotcl;
	uint64_t gotch;
	uint64_t rnbc;
	uint64_t ruc;
	uint64_t rfc;
	uint64_t roc;
	uint64_t rjc;
	uint64_t mgprc;
	uint64_t mgpdc;
	uint64_t mgptc;
	uint64_t torl;
	uint64_t torh;
	uint64_t totl;
	uint64_t toth;
	uint64_t tpr;
	uint64_t tpt;
	uint64_t ptc64;
	uint64_t ptc127;
	uint64_t ptc255;
	uint64_t ptc511;
	uint64_t ptc1023;
	uint64_t ptc1522;
	uint64_t mptc;
	uint64_t bptc;
	uint64_t tsctc;
	uint64_t tsctfc;
};

/* Structure containing variables used by the shared code (e1000_hw.c) */
struct e1000_hw {
	pci_dev_t pdev;
	uint8_t *hw_addr;
	e1000_mac_type mac_type;
	e1000_phy_type phy_type;
	uint32_t phy_init_script;
	e1000_media_type media_type;
	e1000_lan_loc lan_loc;
	e1000_fc_type fc;
#if 0
	e1000_bus_speed bus_speed;
	e1000_bus_width bus_width;
	e1000_bus_type bus_type;
	uint32_t io_base;
#endif
	uint32_t phy_id;
	uint32_t phy_addr;
	uint32_t original_fc;
	uint32_t txcw;
	uint32_t autoneg_failed;
#if 0
	uint32_t max_frame_size;
	uint32_t min_frame_size;
	uint32_t mc_filter_type;
	uint32_t num_mc_addrs;
	uint32_t collision_delta;
	uint32_t tx_packet_delta;
	uint32_t ledctl_default;
	uint32_t ledctl_mode1;
	uint32_t ledctl_mode2;
#endif
	uint16_t autoneg_advertised;
	uint16_t pci_cmd_word;
	uint16_t fc_high_water;
	uint16_t fc_low_water;
	uint16_t fc_pause_time;
#if 0
	uint16_t current_ifs_val;
	uint16_t ifs_min_val;
	uint16_t ifs_max_val;
	uint16_t ifs_step_size;
	uint16_t ifs_ratio;
#endif
	uint16_t device_id;
	uint16_t vendor_id;
	uint16_t subsystem_id;
	uint16_t subsystem_vendor_id;
	uint8_t revision_id;
#if 0
	uint8_t autoneg;
	uint8_t mdix;
	uint8_t forced_speed_duplex;
	uint8_t wait_autoneg_complete;
	uint8_t dma_fairness;
#endif
#if 0
	uint8_t perm_mac_addr[NODE_ADDRESS_SIZE];
	boolean_t disable_polarity_correction;
#endif
	boolean_t get_link_status;
	boolean_t tbi_compatibility_en;
	boolean_t tbi_compatibility_on;
	boolean_t fc_send_xon;
	boolean_t report_tx_early;
#if 0
	boolean_t adaptive_ifs;
	boolean_t ifs_params_forced;
	boolean_t in_ifs_mode;
#endif
};

#define E1000_EEPROM_SWDPIN0   0x0001	/* SWDPIN 0 EEPROM Value */
#define E1000_EEPROM_LED_LOGIC 0x0020	/* Led Logic Word */

/* Register Bit Masks */
/* Device Control */
#define E1000_CTRL_FD	    0x00000001	/* Full duplex.0=half; 1=full */
#define E1000_CTRL_BEM	    0x00000002	/* Endian Mode.0=little,1=big */
#define E1000_CTRL_PRIOR    0x00000004	/* Priority on PCI. 0=rx,1=fair */
#define E1000_CTRL_LRST     0x00000008	/* Link reset. 0=normal,1=reset */
#define E1000_CTRL_TME	    0x00000010	/* Test mode. 0=normal,1=test */
#define E1000_CTRL_SLE	    0x00000020	/* Serial Link on 0=dis,1=en */
#define E1000_CTRL_ASDE     0x00000020	/* Auto-speed detect enable */
#define E1000_CTRL_SLU	    0x00000040	/* Set link up (Force Link) */
#define E1000_CTRL_ILOS     0x00000080	/* Invert Loss-Of Signal */
#define E1000_CTRL_SPD_SEL  0x00000300	/* Speed Select Mask */
#define E1000_CTRL_SPD_10   0x00000000	/* Force 10Mb */
#define E1000_CTRL_SPD_100  0x00000100	/* Force 100Mb */
#define E1000_CTRL_SPD_1000 0x00000200	/* Force 1Gb */
#define E1000_CTRL_BEM32    0x00000400	/* Big Endian 32 mode */
#define E1000_CTRL_FRCSPD   0x00000800	/* Force Speed */
#define E1000_CTRL_FRCDPX   0x00001000	/* Force Duplex */
#define E1000_CTRL_SWDPIN0  0x00040000	/* SWDPIN 0 value */
#define E1000_CTRL_SWDPIN1  0x00080000	/* SWDPIN 1 value */
#define E1000_CTRL_SWDPIN2  0x00100000	/* SWDPIN 2 value */
#define E1000_CTRL_SWDPIN3  0x00200000	/* SWDPIN 3 value */
#define E1000_CTRL_SWDPIO0  0x00400000	/* SWDPIN 0 Input or output */
#define E1000_CTRL_SWDPIO1  0x00800000	/* SWDPIN 1 input or output */
#define E1000_CTRL_SWDPIO2  0x01000000	/* SWDPIN 2 input or output */
#define E1000_CTRL_SWDPIO3  0x02000000	/* SWDPIN 3 input or output */
#define E1000_CTRL_RST	    0x04000000	/* Global reset */
#define E1000_CTRL_RFCE     0x08000000	/* Receive Flow Control enable */
#define E1000_CTRL_TFCE     0x10000000	/* Transmit flow control enable */
#define E1000_CTRL_RTE	    0x20000000	/* Routing tag enable */
#define E1000_CTRL_VME	    0x40000000	/* IEEE VLAN mode enable */
#define E1000_CTRL_PHY_RST  0x80000000	/* PHY Reset */

/* Device Status */
#define E1000_STATUS_FD		0x00000001	/* Full duplex.0=half,1=full */
#define E1000_STATUS_LU		0x00000002	/* Link up.0=no,1=link */
#define E1000_STATUS_FUNC_MASK	0x0000000C	/* PCI Function Mask */
#define E1000_STATUS_FUNC_0	0x00000000	/* Function 0 */
#define E1000_STATUS_FUNC_1	0x00000004	/* Function 1 */
#define E1000_STATUS_TXOFF	0x00000010	/* transmission paused */
#define E1000_STATUS_TBIMODE	0x00000020	/* TBI mode */
#define E1000_STATUS_SPEED_MASK 0x000000C0
#define E1000_STATUS_SPEED_10	0x00000000	/* Speed 10Mb/s */
#define E1000_STATUS_SPEED_100	0x00000040	/* Speed 100Mb/s */
#define E1000_STATUS_SPEED_1000 0x00000080	/* Speed 1000Mb/s */
#define E1000_STATUS_ASDV	0x00000300	/* Auto speed detect value */
#define E1000_STATUS_MTXCKOK	0x00000400	/* MTX clock running OK */
#define E1000_STATUS_PCI66	0x00000800	/* In 66Mhz slot */
#define E1000_STATUS_BUS64	0x00001000	/* In 64 bit slot */
#define E1000_STATUS_PCIX_MODE	0x00002000	/* PCI-X mode */
#define E1000_STATUS_PCIX_SPEED 0x0000C000	/* PCI-X bus speed */

/* Constants used to intrepret the masked PCI-X bus speed. */
#define E1000_STATUS_PCIX_SPEED_66  0x00000000	/* PCI-X bus speed  50-66 MHz */
#define E1000_STATUS_PCIX_SPEED_100 0x00004000	/* PCI-X bus speed  66-100 MHz */
#define E1000_STATUS_PCIX_SPEED_133 0x00008000	/* PCI-X bus speed 100-133 MHz */

/* EEPROM/Flash Control */
#define E1000_EECD_SK	     0x00000001	/* EEPROM Clock */
#define E1000_EECD_CS	     0x00000002	/* EEPROM Chip Select */
#define E1000_EECD_DI	     0x00000004	/* EEPROM Data In */
#define E1000_EECD_DO	     0x00000008	/* EEPROM Data Out */
#define E1000_EECD_FWE_MASK  0x00000030
#define E1000_EECD_FWE_DIS   0x00000010	/* Disable FLASH writes */
#define E1000_EECD_FWE_EN    0x00000020	/* Enable FLASH writes */
#define E1000_EECD_FWE_SHIFT 4
#define E1000_EECD_SIZE      0x00000200	/* EEPROM Size (0=64 word 1=256 word) */
#define E1000_EECD_REQ	     0x00000040	/* EEPROM Access Request */
#define E1000_EECD_GNT	     0x00000080	/* EEPROM Access Grant */
#define E1000_EECD_PRES      0x00000100	/* EEPROM Present */

/* EEPROM Read */
#define E1000_EERD_START      0x00000001	/* Start Read */
#define E1000_EERD_DONE       0x00000010	/* Read Done */
#define E1000_EERD_ADDR_SHIFT 8
#define E1000_EERD_ADDR_MASK  0x0000FF00	/* Read Address */
#define E1000_EERD_DATA_SHIFT 16
#define E1000_EERD_DATA_MASK  0xFFFF0000	/* Read Data */

/* Extended Device Control */
#define E1000_CTRL_EXT_GPI0_EN	 0x00000001	/* Maps SDP4 to GPI0 */
#define E1000_CTRL_EXT_GPI1_EN	 0x00000002	/* Maps SDP5 to GPI1 */
#define E1000_CTRL_EXT_PHYINT_EN E1000_CTRL_EXT_GPI1_EN
#define E1000_CTRL_EXT_GPI2_EN	 0x00000004	/* Maps SDP6 to GPI2 */
#define E1000_CTRL_EXT_GPI3_EN	 0x00000008	/* Maps SDP7 to GPI3 */
#define E1000_CTRL_EXT_SDP4_DATA 0x00000010	/* Value of SW Defineable Pin 4 */
#define E1000_CTRL_EXT_SDP5_DATA 0x00000020	/* Value of SW Defineable Pin 5 */
#define E1000_CTRL_EXT_PHY_INT	 E1000_CTRL_EXT_SDP5_DATA
#define E1000_CTRL_EXT_SDP6_DATA 0x00000040	/* Value of SW Defineable Pin 6 */
#define E1000_CTRL_EXT_SWDPIN6	 0x00000040	/* SWDPIN 6 value */
#define E1000_CTRL_EXT_SDP7_DATA 0x00000080	/* Value of SW Defineable Pin 7 */
#define E1000_CTRL_EXT_SWDPIN7	 0x00000080	/* SWDPIN 7 value */
#define E1000_CTRL_EXT_SDP4_DIR  0x00000100	/* Direction of SDP4 0=in 1=out */
#define E1000_CTRL_EXT_SDP5_DIR  0x00000200	/* Direction of SDP5 0=in 1=out */
#define E1000_CTRL_EXT_SDP6_DIR  0x00000400	/* Direction of SDP6 0=in 1=out */
#define E1000_CTRL_EXT_SWDPIO6	 0x00000400	/* SWDPIN 6 Input or output */
#define E1000_CTRL_EXT_SDP7_DIR  0x00000800	/* Direction of SDP7 0=in 1=out */
#define E1000_CTRL_EXT_SWDPIO7	 0x00000800	/* SWDPIN 7 Input or output */
#define E1000_CTRL_EXT_ASDCHK	 0x00001000	/* Initiate an ASD sequence */
#define E1000_CTRL_EXT_EE_RST	 0x00002000	/* Reinitialize from EEPROM */
#define E1000_CTRL_EXT_IPS	 0x00004000	/* Invert Power State */
#define E1000_CTRL_EXT_SPD_BYPS  0x00008000	/* Speed Select Bypass */
#define E1000_CTRL_EXT_LINK_MODE_MASK 0x00C00000
#define E1000_CTRL_EXT_LINK_MODE_GMII 0x00000000
#define E1000_CTRL_EXT_LINK_MODE_TBI  0x00C00000
#define E1000_CTRL_EXT_WR_WMARK_MASK  0x03000000
#define E1000_CTRL_EXT_WR_WMARK_256   0x00000000
#define E1000_CTRL_EXT_WR_WMARK_320   0x01000000
#define E1000_CTRL_EXT_WR_WMARK_384   0x02000000
#define E1000_CTRL_EXT_WR_WMARK_448   0x03000000

/* MDI Control */
#define E1000_MDIC_DATA_MASK 0x0000FFFF
#define E1000_MDIC_REG_MASK  0x001F0000
#define E1000_MDIC_REG_SHIFT 16
#define E1000_MDIC_PHY_MASK  0x03E00000
#define E1000_MDIC_PHY_SHIFT 21
#define E1000_MDIC_OP_WRITE  0x04000000
#define E1000_MDIC_OP_READ   0x08000000
#define E1000_MDIC_READY     0x10000000
#define E1000_MDIC_INT_EN    0x20000000
#define E1000_MDIC_ERROR     0x40000000

/* LED Control */
#define E1000_LEDCTL_LED0_MODE_MASK  0x0000000F
#define E1000_LEDCTL_LED0_MODE_SHIFT 0
#define E1000_LEDCTL_LED0_IVRT	     0x00000040
#define E1000_LEDCTL_LED0_BLINK      0x00000080
#define E1000_LEDCTL_LED1_MODE_MASK  0x00000F00
#define E1000_LEDCTL_LED1_MODE_SHIFT 8
#define E1000_LEDCTL_LED1_IVRT	     0x00004000
#define E1000_LEDCTL_LED1_BLINK      0x00008000
#define E1000_LEDCTL_LED2_MODE_MASK  0x000F0000
#define E1000_LEDCTL_LED2_MODE_SHIFT 16
#define E1000_LEDCTL_LED2_IVRT	     0x00400000
#define E1000_LEDCTL_LED2_BLINK      0x00800000
#define E1000_LEDCTL_LED3_MODE_MASK  0x0F000000
#define E1000_LEDCTL_LED3_MODE_SHIFT 24
#define E1000_LEDCTL_LED3_IVRT	     0x40000000
#define E1000_LEDCTL_LED3_BLINK      0x80000000

#define E1000_LEDCTL_MODE_LINK_10_1000	0x0
#define E1000_LEDCTL_MODE_LINK_100_1000 0x1
#define E1000_LEDCTL_MODE_LINK_UP	0x2
#define E1000_LEDCTL_MODE_ACTIVITY	0x3
#define E1000_LEDCTL_MODE_LINK_ACTIVITY 0x4
#define E1000_LEDCTL_MODE_LINK_10	0x5
#define E1000_LEDCTL_MODE_LINK_100	0x6
#define E1000_LEDCTL_MODE_LINK_1000	0x7
#define E1000_LEDCTL_MODE_PCIX_MODE	0x8
#define E1000_LEDCTL_MODE_FULL_DUPLEX	0x9
#define E1000_LEDCTL_MODE_COLLISION	0xA
#define E1000_LEDCTL_MODE_BUS_SPEED	0xB
#define E1000_LEDCTL_MODE_BUS_SIZE	0xC
#define E1000_LEDCTL_MODE_PAUSED	0xD
#define E1000_LEDCTL_MODE_LED_ON	0xE
#define E1000_LEDCTL_MODE_LED_OFF	0xF

/* Receive Address */
#define E1000_RAH_AV  0x80000000	/* Receive descriptor valid */

/* Interrupt Cause Read */
#define E1000_ICR_TXDW	  0x00000001	/* Transmit desc written back */
#define E1000_ICR_TXQE	  0x00000002	/* Transmit Queue empty */
#define E1000_ICR_LSC	  0x00000004	/* Link Status Change */
#define E1000_ICR_RXSEQ   0x00000008	/* rx sequence error */
#define E1000_ICR_RXDMT0  0x00000010	/* rx desc min. threshold (0) */
#define E1000_ICR_RXO	  0x00000040	/* rx overrun */
#define E1000_ICR_RXT0	  0x00000080	/* rx timer intr (ring 0) */
#define E1000_ICR_MDAC	  0x00000200	/* MDIO access complete */
#define E1000_ICR_RXCFG   0x00000400	/* RX /c/ ordered set */
#define E1000_ICR_GPI_EN0 0x00000800	/* GP Int 0 */
#define E1000_ICR_GPI_EN1 0x00001000	/* GP Int 1 */
#define E1000_ICR_GPI_EN2 0x00002000	/* GP Int 2 */
#define E1000_ICR_GPI_EN3 0x00004000	/* GP Int 3 */
#define E1000_ICR_TXD_LOW 0x00008000
#define E1000_ICR_SRPD	  0x00010000

/* Interrupt Cause Set */
#define E1000_ICS_TXDW	  E1000_ICR_TXDW	/* Transmit desc written back */
#define E1000_ICS_TXQE	  E1000_ICR_TXQE	/* Transmit Queue empty */
#define E1000_ICS_LSC	  E1000_ICR_LSC	/* Link Status Change */
#define E1000_ICS_RXSEQ   E1000_ICR_RXSEQ	/* rx sequence error */
#define E1000_ICS_RXDMT0  E1000_ICR_RXDMT0	/* rx desc min. threshold */
#define E1000_ICS_RXO	  E1000_ICR_RXO	/* rx overrun */
#define E1000_ICS_RXT0	  E1000_ICR_RXT0	/* rx timer intr */
#define E1000_ICS_MDAC	  E1000_ICR_MDAC	/* MDIO access complete */
#define E1000_ICS_RXCFG   E1000_ICR_RXCFG	/* RX /c/ ordered set */
#define E1000_ICS_GPI_EN0 E1000_ICR_GPI_EN0	/* GP Int 0 */
#define E1000_ICS_GPI_EN1 E1000_ICR_GPI_EN1	/* GP Int 1 */
#define E1000_ICS_GPI_EN2 E1000_ICR_GPI_EN2	/* GP Int 2 */
#define E1000_ICS_GPI_EN3 E1000_ICR_GPI_EN3	/* GP Int 3 */
#define E1000_ICS_TXD_LOW E1000_ICR_TXD_LOW
#define E1000_ICS_SRPD	  E1000_ICR_SRPD

/* Interrupt Mask Set */
#define E1000_IMS_TXDW	  E1000_ICR_TXDW	/* Transmit desc written back */
#define E1000_IMS_TXQE	  E1000_ICR_TXQE	/* Transmit Queue empty */
#define E1000_IMS_LSC	  E1000_ICR_LSC	/* Link Status Change */
#define E1000_IMS_RXSEQ   E1000_ICR_RXSEQ	/* rx sequence error */
#define E1000_IMS_RXDMT0  E1000_ICR_RXDMT0	/* rx desc min. threshold */
#define E1000_IMS_RXO	  E1000_ICR_RXO	/* rx overrun */
#define E1000_IMS_RXT0	  E1000_ICR_RXT0	/* rx timer intr */
#define E1000_IMS_MDAC	  E1000_ICR_MDAC	/* MDIO access complete */
#define E1000_IMS_RXCFG   E1000_ICR_RXCFG	/* RX /c/ ordered set */
#define E1000_IMS_GPI_EN0 E1000_ICR_GPI_EN0	/* GP Int 0 */
#define E1000_IMS_GPI_EN1 E1000_ICR_GPI_EN1	/* GP Int 1 */
#define E1000_IMS_GPI_EN2 E1000_ICR_GPI_EN2	/* GP Int 2 */
#define E1000_IMS_GPI_EN3 E1000_ICR_GPI_EN3	/* GP Int 3 */
#define E1000_IMS_TXD_LOW E1000_ICR_TXD_LOW
#define E1000_IMS_SRPD	  E1000_ICR_SRPD

/* Interrupt Mask Clear */
#define E1000_IMC_TXDW	  E1000_ICR_TXDW	/* Transmit desc written back */
#define E1000_IMC_TXQE	  E1000_ICR_TXQE	/* Transmit Queue empty */
#define E1000_IMC_LSC	  E1000_ICR_LSC	/* Link Status Change */
#define E1000_IMC_RXSEQ   E1000_ICR_RXSEQ	/* rx sequence error */
#define E1000_IMC_RXDMT0  E1000_ICR_RXDMT0	/* rx desc min. threshold */
#define E1000_IMC_RXO	  E1000_ICR_RXO	/* rx overrun */
#define E1000_IMC_RXT0	  E1000_ICR_RXT0	/* rx timer intr */
#define E1000_IMC_MDAC	  E1000_ICR_MDAC	/* MDIO access complete */
#define E1000_IMC_RXCFG   E1000_ICR_RXCFG	/* RX /c/ ordered set */
#define E1000_IMC_GPI_EN0 E1000_ICR_GPI_EN0	/* GP Int 0 */
#define E1000_IMC_GPI_EN1 E1000_ICR_GPI_EN1	/* GP Int 1 */
#define E1000_IMC_GPI_EN2 E1000_ICR_GPI_EN2	/* GP Int 2 */
#define E1000_IMC_GPI_EN3 E1000_ICR_GPI_EN3	/* GP Int 3 */
#define E1000_IMC_TXD_LOW E1000_ICR_TXD_LOW
#define E1000_IMC_SRPD	  E1000_ICR_SRPD

/* Receive Control */
#define E1000_RCTL_RST		0x00000001	/* Software reset */
#define E1000_RCTL_EN		0x00000002	/* enable */
#define E1000_RCTL_SBP		0x00000004	/* store bad packet */
#define E1000_RCTL_UPE		0x00000008	/* unicast promiscuous enable */
#define E1000_RCTL_MPE		0x00000010	/* multicast promiscuous enab */
#define E1000_RCTL_LPE		0x00000020	/* long packet enable */
#define E1000_RCTL_LBM_NO	0x00000000	/* no loopback mode */
#define E1000_RCTL_LBM_MAC	0x00000040	/* MAC loopback mode */
#define E1000_RCTL_LBM_SLP	0x00000080	/* serial link loopback mode */
#define E1000_RCTL_LBM_TCVR	0x000000C0	/* tcvr loopback mode */
#define E1000_RCTL_RDMTS_HALF	0x00000000	/* rx desc min threshold size */
#define E1000_RCTL_RDMTS_QUAT	0x00000100	/* rx desc min threshold size */
#define E1000_RCTL_RDMTS_EIGTH	0x00000200	/* rx desc min threshold size */
#define E1000_RCTL_MO_SHIFT	12	/* multicast offset shift */
#define E1000_RCTL_MO_0		0x00000000	/* multicast offset 11:0 */
#define E1000_RCTL_MO_1		0x00001000	/* multicast offset 12:1 */
#define E1000_RCTL_MO_2		0x00002000	/* multicast offset 13:2 */
#define E1000_RCTL_MO_3		0x00003000	/* multicast offset 15:4 */
#define E1000_RCTL_MDR		0x00004000	/* multicast desc ring 0 */
#define E1000_RCTL_BAM		0x00008000	/* broadcast enable */
/* these buffer sizes are valid if E1000_RCTL_BSEX is 0 */
#define E1000_RCTL_SZ_2048	0x00000000	/* rx buffer size 2048 */
#define E1000_RCTL_SZ_1024	0x00010000	/* rx buffer size 1024 */
#define E1000_RCTL_SZ_512	0x00020000	/* rx buffer size 512 */
#define E1000_RCTL_SZ_256	0x00030000	/* rx buffer size 256 */
/* these buffer sizes are valid if E1000_RCTL_BSEX is 1 */
#define E1000_RCTL_SZ_16384	0x00010000	/* rx buffer size 16384 */
#define E1000_RCTL_SZ_8192	0x00020000	/* rx buffer size 8192 */
#define E1000_RCTL_SZ_4096	0x00030000	/* rx buffer size 4096 */
#define E1000_RCTL_VFE		0x00040000	/* vlan filter enable */
#define E1000_RCTL_CFIEN	0x00080000	/* canonical form enable */
#define E1000_RCTL_CFI		0x00100000	/* canonical form indicator */
#define E1000_RCTL_DPF		0x00400000	/* discard pause frames */
#define E1000_RCTL_PMCF		0x00800000	/* pass MAC control frames */
#define E1000_RCTL_BSEX		0x02000000	/* Buffer size extension */

/* Receive Descriptor */
#define E1000_RDT_DELAY 0x0000ffff	/* Delay timer (1=1024us) */
#define E1000_RDT_FPDB	0x80000000	/* Flush descriptor block */
#define E1000_RDLEN_LEN 0x0007ff80	/* descriptor length */
#define E1000_RDH_RDH	0x0000ffff	/* receive descriptor head */
#define E1000_RDT_RDT	0x0000ffff	/* receive descriptor tail */

/* Flow Control */
#define E1000_FCRTH_RTH  0x0000FFF8	/* Mask Bits[15:3] for RTH */
#define E1000_FCRTH_XFCE 0x80000000	/* External Flow Control Enable */
#define E1000_FCRTL_RTL  0x0000FFF8	/* Mask Bits[15:3] for RTL */
#define E1000_FCRTL_XONE 0x80000000	/* Enable XON frame transmission */

/* Receive Descriptor Control */
#define E1000_RXDCTL_PTHRESH 0x0000003F	/* RXDCTL Prefetch Threshold */
#define E1000_RXDCTL_HTHRESH 0x00003F00	/* RXDCTL Host Threshold */
#define E1000_RXDCTL_WTHRESH 0x003F0000	/* RXDCTL Writeback Threshold */
#define E1000_RXDCTL_GRAN    0x01000000	/* RXDCTL Granularity */

/* Transmit Descriptor Control */
#define E1000_TXDCTL_PTHRESH 0x000000FF	/* TXDCTL Prefetch Threshold */
#define E1000_TXDCTL_HTHRESH 0x0000FF00	/* TXDCTL Host Threshold */
#define E1000_TXDCTL_WTHRESH 0x00FF0000	/* TXDCTL Writeback Threshold */
#define E1000_TXDCTL_GRAN    0x01000000	/* TXDCTL Granularity */
#define E1000_TXDCTL_LWTHRESH 0xFE000000	/* TXDCTL Low Threshold */
#define E1000_TXDCTL_FULL_TX_DESC_WB 0x01010000	/* GRAN=1, WTHRESH=1 */

/* Transmit Configuration Word */
#define E1000_TXCW_FD	      0x00000020	/* TXCW full duplex */
#define E1000_TXCW_HD	      0x00000040	/* TXCW half duplex */
#define E1000_TXCW_PAUSE      0x00000080	/* TXCW sym pause request */
#define E1000_TXCW_ASM_DIR    0x00000100	/* TXCW astm pause direction */
#define E1000_TXCW_PAUSE_MASK 0x00000180	/* TXCW pause request mask */
#define E1000_TXCW_RF	      0x00003000	/* TXCW remote fault */
#define E1000_TXCW_NP	      0x00008000	/* TXCW next page */
#define E1000_TXCW_CW	      0x0000ffff	/* TxConfigWord mask */
#define E1000_TXCW_TXC	      0x40000000	/* Transmit Config control */
#define E1000_TXCW_ANE	      0x80000000	/* Auto-neg enable */

/* Receive Configuration Word */
#define E1000_RXCW_CW	 0x0000ffff	/* RxConfigWord mask */
#define E1000_RXCW_NC	 0x04000000	/* Receive config no carrier */
#define E1000_RXCW_IV	 0x08000000	/* Receive config invalid */
#define E1000_RXCW_CC	 0x10000000	/* Receive config change */
#define E1000_RXCW_C	 0x20000000	/* Receive config */
#define E1000_RXCW_SYNCH 0x40000000	/* Receive config synch */
#define E1000_RXCW_ANC	 0x80000000	/* Auto-neg complete */

/* Transmit Control */
#define E1000_TCTL_RST	  0x00000001	/* software reset */
#define E1000_TCTL_EN	  0x00000002	/* enable tx */
#define E1000_TCTL_BCE	  0x00000004	/* busy check enable */
#define E1000_TCTL_PSP	  0x00000008	/* pad short packets */
#define E1000_TCTL_CT	  0x00000ff0	/* collision threshold */
#define E1000_TCTL_COLD   0x003ff000	/* collision distance */
#define E1000_TCTL_SWXOFF 0x00400000	/* SW Xoff transmission */
#define E1000_TCTL_PBE	  0x00800000	/* Packet Burst Enable */
#define E1000_TCTL_RTLC   0x01000000	/* Re-transmit on late collision */
#define E1000_TCTL_NRTU   0x02000000	/* No Re-transmit on underrun */

/* Receive Checksum Control */
#define E1000_RXCSUM_PCSS_MASK 0x000000FF	/* Packet Checksum Start */
#define E1000_RXCSUM_IPOFL     0x00000100	/* IPv4 checksum offload */
#define E1000_RXCSUM_TUOFL     0x00000200	/* TCP / UDP checksum offload */
#define E1000_RXCSUM_IPV6OFL   0x00000400	/* IPv6 checksum offload */

/* Definitions for power management and wakeup registers */
/* Wake Up Control */
#define E1000_WUC_APME	     0x00000001	/* APM Enable */
#define E1000_WUC_PME_EN     0x00000002	/* PME Enable */
#define E1000_WUC_PME_STATUS 0x00000004	/* PME Status */
#define E1000_WUC_APMPME     0x00000008	/* Assert PME on APM Wakeup */

/* Wake Up Filter Control */
#define E1000_WUFC_LNKC 0x00000001	/* Link Status Change Wakeup Enable */
#define E1000_WUFC_MAG	0x00000002	/* Magic Packet Wakeup Enable */
#define E1000_WUFC_EX	0x00000004	/* Directed Exact Wakeup Enable */
#define E1000_WUFC_MC	0x00000008	/* Directed Multicast Wakeup Enable */
#define E1000_WUFC_BC	0x00000010	/* Broadcast Wakeup Enable */
#define E1000_WUFC_ARP	0x00000020	/* ARP Request Packet Wakeup Enable */
#define E1000_WUFC_IPV4 0x00000040	/* Directed IPv4 Packet Wakeup Enable */
#define E1000_WUFC_IPV6 0x00000080	/* Directed IPv6 Packet Wakeup Enable */
#define E1000_WUFC_FLX0 0x00010000	/* Flexible Filter 0 Enable */
#define E1000_WUFC_FLX1 0x00020000	/* Flexible Filter 1 Enable */
#define E1000_WUFC_FLX2 0x00040000	/* Flexible Filter 2 Enable */
#define E1000_WUFC_FLX3 0x00080000	/* Flexible Filter 3 Enable */
#define E1000_WUFC_ALL_FILTERS 0x000F00FF	/* Mask for all wakeup filters */
#define E1000_WUFC_FLX_OFFSET 16	/* Offset to the Flexible Filters bits */
#define E1000_WUFC_FLX_FILTERS 0x000F0000	/* Mask for the 4 flexible filters */

/* Wake Up Status */
#define E1000_WUS_LNKC 0x00000001	/* Link Status Changed */
#define E1000_WUS_MAG  0x00000002	/* Magic Packet Received */
#define E1000_WUS_EX   0x00000004	/* Directed Exact Received */
#define E1000_WUS_MC   0x00000008	/* Directed Multicast Received */
#define E1000_WUS_BC   0x00000010	/* Broadcast Received */
#define E1000_WUS_ARP  0x00000020	/* ARP Request Packet Received */
#define E1000_WUS_IPV4 0x00000040	/* Directed IPv4 Packet Wakeup Received */
#define E1000_WUS_IPV6 0x00000080	/* Directed IPv6 Packet Wakeup Received */
#define E1000_WUS_FLX0 0x00010000	/* Flexible Filter 0 Match */
#define E1000_WUS_FLX1 0x00020000	/* Flexible Filter 1 Match */
#define E1000_WUS_FLX2 0x00040000	/* Flexible Filter 2 Match */
#define E1000_WUS_FLX3 0x00080000	/* Flexible Filter 3 Match */
#define E1000_WUS_FLX_FILTERS 0x000F0000	/* Mask for the 4 flexible filters */

/* Management Control */
#define E1000_MANC_SMBUS_EN	 0x00000001	/* SMBus Enabled - RO */
#define E1000_MANC_ASF_EN	 0x00000002	/* ASF Enabled - RO */
#define E1000_MANC_R_ON_FORCE	 0x00000004	/* Reset on Force TCO - RO */
#define E1000_MANC_RMCP_EN	 0x00000100	/* Enable RCMP 026Fh Filtering */
#define E1000_MANC_0298_EN	 0x00000200	/* Enable RCMP 0298h Filtering */
#define E1000_MANC_IPV4_EN	 0x00000400	/* Enable IPv4 */
#define E1000_MANC_IPV6_EN	 0x00000800	/* Enable IPv6 */
#define E1000_MANC_SNAP_EN	 0x00001000	/* Accept LLC/SNAP */
#define E1000_MANC_ARP_EN	 0x00002000	/* Enable ARP Request Filtering */
#define E1000_MANC_NEIGHBOR_EN	 0x00004000	/* Enable Neighbor Discovery
						 * Filtering */
#define E1000_MANC_TCO_RESET	 0x00010000	/* TCO Reset Occurred */
#define E1000_MANC_RCV_TCO_EN	 0x00020000	/* Receive TCO Packets Enabled */
#define E1000_MANC_REPORT_STATUS 0x00040000	/* Status Reporting Enabled */
#define E1000_MANC_SMB_REQ	 0x01000000	/* SMBus Request */
#define E1000_MANC_SMB_GNT	 0x02000000	/* SMBus Grant */
#define E1000_MANC_SMB_CLK_IN	 0x04000000	/* SMBus Clock In */
#define E1000_MANC_SMB_DATA_IN	 0x08000000	/* SMBus Data In */
#define E1000_MANC_SMB_DATA_OUT  0x10000000	/* SMBus Data Out */
#define E1000_MANC_SMB_CLK_OUT	 0x20000000	/* SMBus Clock Out */

#define E1000_MANC_SMB_DATA_OUT_SHIFT  28	/* SMBus Data Out Shift */
#define E1000_MANC_SMB_CLK_OUT_SHIFT   29	/* SMBus Clock Out Shift */

/* Wake Up Packet Length */
#define E1000_WUPL_LENGTH_MASK 0x0FFF	/* Only the lower 12 bits are valid */

#define E1000_MDALIGN	       4096

/* EEPROM Commands */
#define EEPROM_READ_OPCODE  0x6	/* EERPOM read opcode */
#define EEPROM_WRITE_OPCODE 0x5	/* EERPOM write opcode */
#define EEPROM_ERASE_OPCODE 0x7	/* EERPOM erase opcode */
#define EEPROM_EWEN_OPCODE  0x13	/* EERPOM erase/write enable */
#define EEPROM_EWDS_OPCODE  0x10	/* EERPOM erast/write disable */

/* EEPROM Word Offsets */
#define EEPROM_COMPAT		   0x0003
#define EEPROM_ID_LED_SETTINGS	   0x0004
#define EEPROM_INIT_CONTROL1_REG   0x000A
#define EEPROM_INIT_CONTROL2_REG   0x000F
#define EEPROM_FLASH_VERSION	   0x0032
#define EEPROM_CHECKSUM_REG	   0x003F

/* Word definitions for ID LED Settings */
#define ID_LED_RESERVED_0000 0x0000
#define ID_LED_RESERVED_FFFF 0xFFFF
#define ID_LED_DEFAULT	     ((ID_LED_OFF1_ON2 << 12) | \
			      (ID_LED_OFF1_OFF2 << 8) | \
			      (ID_LED_DEF1_DEF2 << 4) | \
			      (ID_LED_DEF1_DEF2))
#define ID_LED_DEF1_DEF2     0x1
#define ID_LED_DEF1_ON2      0x2
#define ID_LED_DEF1_OFF2     0x3
#define ID_LED_ON1_DEF2      0x4
#define ID_LED_ON1_ON2	     0x5
#define ID_LED_ON1_OFF2      0x6
#define ID_LED_OFF1_DEF2     0x7
#define ID_LED_OFF1_ON2      0x8
#define ID_LED_OFF1_OFF2     0x9

/* Mask bits for fields in Word 0x03 of the EEPROM */
#define EEPROM_COMPAT_SERVER 0x0400
#define EEPROM_COMPAT_CLIENT 0x0200

/* Mask bits for fields in Word 0x0a of the EEPROM */
#define EEPROM_WORD0A_ILOS   0x0010
#define EEPROM_WORD0A_SWDPIO 0x01E0
#define EEPROM_WORD0A_LRST   0x0200
#define EEPROM_WORD0A_FD     0x0400
#define EEPROM_WORD0A_66MHZ  0x0800

/* Mask bits for fields in Word 0x0f of the EEPROM */
#define EEPROM_WORD0F_PAUSE_MASK 0x3000
#define EEPROM_WORD0F_PAUSE	 0x1000
#define EEPROM_WORD0F_ASM_DIR	 0x2000
#define EEPROM_WORD0F_ANE	 0x0800
#define EEPROM_WORD0F_SWPDIO_EXT 0x00F0

/* For checksumming, the sum of all words in the EEPROM should equal 0xBABA. */
#define EEPROM_SUM 0xBABA

/* EEPROM Map defines (WORD OFFSETS)*/
#define EEPROM_NODE_ADDRESS_BYTE_0 0
#define EEPROM_PBA_BYTE_1	   8

/* EEPROM Map Sizes (Byte Counts) */
#define PBA_SIZE 4

/* Collision related configuration parameters */
#define E1000_COLLISION_THRESHOLD	16
#define E1000_CT_SHIFT			4
#define E1000_COLLISION_DISTANCE	64
#define E1000_FDX_COLLISION_DISTANCE	E1000_COLLISION_DISTANCE
#define E1000_HDX_COLLISION_DISTANCE	E1000_COLLISION_DISTANCE
#define E1000_GB_HDX_COLLISION_DISTANCE 512
#define E1000_COLD_SHIFT		12

/* The number of Transmit and Receive Descriptors must be a multiple of 8 */
#define REQ_TX_DESCRIPTOR_MULTIPLE  8
#define REQ_RX_DESCRIPTOR_MULTIPLE  8

/* Default values for the transmit IPG register */
#define DEFAULT_82542_TIPG_IPGT        10
#define DEFAULT_82543_TIPG_IPGT_FIBER  9
#define DEFAULT_82543_TIPG_IPGT_COPPER 8

#define E1000_TIPG_IPGT_MASK  0x000003FF
#define E1000_TIPG_IPGR1_MASK 0x000FFC00
#define E1000_TIPG_IPGR2_MASK 0x3FF00000

#define DEFAULT_82542_TIPG_IPGR1 2
#define DEFAULT_82543_TIPG_IPGR1 8
#define E1000_TIPG_IPGR1_SHIFT	10

#define DEFAULT_82542_TIPG_IPGR2 10
#define DEFAULT_82543_TIPG_IPGR2 6
#define E1000_TIPG_IPGR2_SHIFT	20

#define E1000_TXDMAC_DPP 0x00000001

/* Adaptive IFS defines */
#define TX_THRESHOLD_START     8
#define TX_THRESHOLD_INCREMENT 10
#define TX_THRESHOLD_DECREMENT 1
#define TX_THRESHOLD_STOP      190
#define TX_THRESHOLD_DISABLE   0
#define TX_THRESHOLD_TIMER_MS  10000
#define MIN_NUM_XMITS	       1000
#define IFS_MAX		       80
#define IFS_STEP	       10
#define IFS_MIN		       40
#define IFS_RATIO	       4

/* PBA constants */
#define E1000_PBA_16K 0x0010	/* 16KB, default TX allocation */
#define E1000_PBA_24K 0x0018
#define E1000_PBA_40K 0x0028
#define E1000_PBA_48K 0x0030	/* 48KB, default RX allocation */

/* Flow Control Constants */
#define FLOW_CONTROL_ADDRESS_LOW  0x00C28001
#define FLOW_CONTROL_ADDRESS_HIGH 0x00000100
#define FLOW_CONTROL_TYPE	  0x8808

/* The historical defaults for the flow control values are given below. */
#define FC_DEFAULT_HI_THRESH	    (0x8000)	/* 32KB */
#define FC_DEFAULT_LO_THRESH	    (0x4000)	/* 16KB */
#define FC_DEFAULT_TX_TIMER	    (0x100)	/* ~130 us */

/* Flow Control High-Watermark: 43464 bytes */
#define E1000_FC_HIGH_THRESH 0xA9C8
/* Flow Control Low-Watermark: 43456 bytes */
#define E1000_FC_LOW_THRESH 0xA9C0
/* Flow Control Pause Time: 858 usec */
#define E1000_FC_PAUSE_TIME 0x0680

/* PCIX Config space */
#define PCIX_COMMAND_REGISTER	 0xE6
#define PCIX_STATUS_REGISTER_LO  0xE8
#define PCIX_STATUS_REGISTER_HI  0xEA

#define PCIX_COMMAND_MMRBC_MASK      0x000C
#define PCIX_COMMAND_MMRBC_SHIFT     0x2
#define PCIX_STATUS_HI_MMRBC_MASK    0x0060
#define PCIX_STATUS_HI_MMRBC_SHIFT   0x5
#define PCIX_STATUS_HI_MMRBC_4K      0x3
#define PCIX_STATUS_HI_MMRBC_2K      0x2

/* The number of bits that we need to shift right to move the "pause"
 * bits from the EEPROM (bits 13:12) to the "pause" (bits 8:7) field
 * in the TXCW register
 */
#define PAUSE_SHIFT 5

/* The number of bits that we need to shift left to move the "SWDPIO"
 * bits from the EEPROM (bits 8:5) to the "SWDPIO" (bits 25:22) field
 * in the CTRL register
 */
#define SWDPIO_SHIFT 17

/* The number of bits that we need to shift left to move the "SWDPIO_EXT"
 * bits from the EEPROM word F (bits 7:4) to the bits 11:8 of The
 * Extended CTRL register.
 * in the CTRL register
 */
#define SWDPIO__EXT_SHIFT 4

/* The number of bits that we need to shift left to move the "ILOS"
 * bit from the EEPROM (bit 4) to the "ILOS" (bit 7) field
 * in the CTRL register
 */
#define ILOS_SHIFT  3

#define RECEIVE_BUFFER_ALIGN_SIZE  (256)

/* The number of milliseconds we wait for auto-negotiation to complete */
#define LINK_UP_TIMEOUT		    500

#define E1000_TX_BUFFER_SIZE ((uint32_t)1514)

/* The carrier extension symbol, as received by the NIC. */
#define CARRIER_EXTENSION   0x0F

/* TBI_ACCEPT macro definition:
 *
 * This macro requires:
 *	adapter = a pointer to struct e1000_hw
 *	status = the 8 bit status field of the RX descriptor with EOP set
 *	error = the 8 bit error field of the RX descriptor with EOP set
 *	length = the sum of all the length fields of the RX descriptors that
 *		 make up the current frame
 *	last_byte = the last byte of the frame DMAed by the hardware
 *	max_frame_length = the maximum frame length we want to accept.
 *	min_frame_length = the minimum frame length we want to accept.
 *
 * This macro is a conditional that should be used in the interrupt
 * handler's Rx processing routine when RxErrors have been detected.
 *
 * Typical use:
 *  ...
 *  if (TBI_ACCEPT) {
 *	accept_frame = TRUE;
 *	e1000_tbi_adjust_stats(adapter, MacAddress);
 *	frame_length--;
 *  } else {
 *	accept_frame = FALSE;
 *  }
 *  ...
 */

#define TBI_ACCEPT(adapter, status, errors, length, last_byte) \
    ((adapter)->tbi_compatibility_on && \
     (((errors) & E1000_RXD_ERR_FRAME_ERR_MASK) == E1000_RXD_ERR_CE) && \
     ((last_byte) == CARRIER_EXTENSION) && \
     (((status) & E1000_RXD_STAT_VP) ? \
	  (((length) > ((adapter)->min_frame_size - VLAN_TAG_SIZE)) && \
	   ((length) <= ((adapter)->max_frame_size + 1))) : \
	  (((length) > (adapter)->min_frame_size) && \
	   ((length) <= ((adapter)->max_frame_size + VLAN_TAG_SIZE + 1)))))

/* Structures, enums, and macros for the PHY */

/* Bit definitions for the Management Data IO (MDIO) and Management Data
 * Clock (MDC) pins in the Device Control Register.
 */
#define E1000_CTRL_PHY_RESET_DIR	E1000_CTRL_SWDPIO0
#define E1000_CTRL_PHY_RESET		E1000_CTRL_SWDPIN0
#define E1000_CTRL_MDIO_DIR		E1000_CTRL_SWDPIO2
#define E1000_CTRL_MDIO			E1000_CTRL_SWDPIN2
#define E1000_CTRL_MDC_DIR		E1000_CTRL_SWDPIO3
#define E1000_CTRL_MDC			E1000_CTRL_SWDPIN3
#define E1000_CTRL_PHY_RESET_DIR4	E1000_CTRL_EXT_SDP4_DIR
#define E1000_CTRL_PHY_RESET4		E1000_CTRL_EXT_SDP4_DATA

/* PHY 1000 MII Register/Bit Definitions */
/* PHY Registers defined by IEEE */
#define PHY_CTRL			0x00	/* Control Register */
#define PHY_STATUS			0x01	/* Status Regiser */
#define PHY_ID1				0x02	/* Phy Id Reg (word 1) */
#define PHY_ID2				0x03	/* Phy Id Reg (word 2) */
#define PHY_AUTONEG_ADV		0x04	/* Autoneg Advertisement */
#define PHY_LP_ABILITY			0x05	/* Link Partner Ability (Base Page) */
#define PHY_AUTONEG_EXP		0x06	/* Autoneg Expansion Reg */
#define PHY_NEXT_PAGE_TX		0x07	/* Next Page TX */
#define PHY_LP_NEXT_PAGE		0x08	/* Link Partner Next Page */
#define PHY_1000T_CTRL			0x09	/* 1000Base-T Control Reg */
#define PHY_1000T_STATUS		0x0A	/* 1000Base-T Status Reg */
#define PHY_EXT_STATUS			0x0F	/* Extended Status Reg */

/* M88E1000 Specific Registers */
#define M88E1000_PHY_SPEC_CTRL		0x10	/* PHY Specific Control Register */
#define M88E1000_PHY_SPEC_STATUS	0x11	/* PHY Specific Status Register */
#define M88E1000_INT_ENABLE		0x12	/* Interrupt Enable Register */
#define M88E1000_INT_STATUS		0x13	/* Interrupt Status Register */
#define M88E1000_EXT_PHY_SPEC_CTRL	0x14	/* Extended PHY Specific Control */
#define M88E1000_RX_ERR_CNTR		0x15	/* Receive Error Counter */

#define MAX_PHY_REG_ADDRESS		0x1F	/* 5 bit address bus (0-0x1F) */

/* IGP01E1000 specifics */
#define IGP01E1000_IEEE_REGS_PAGE	0x0000
#define IGP01E1000_IEEE_RESTART_AUTONEG 0x3300
#define IGP01E1000_IEEE_FORCE_GIGA	0x0140

/* IGP01E1000 Specific Registers */
#define IGP01E1000_PHY_PORT_CONFIG	0x10 /* PHY Specific Port Config Register */
#define IGP01E1000_PHY_PORT_STATUS	0x11 /* PHY Specific Status Register */
#define IGP01E1000_PHY_PORT_CTRL	0x12 /* PHY Specific Control Register */
#define IGP01E1000_PHY_LINK_HEALTH	0x13 /* PHY Link Health Register */
#define IGP01E1000_GMII_FIFO		0x14 /* GMII FIFO Register */
#define IGP01E1000_PHY_CHANNEL_QUALITY	0x15 /* PHY Channel Quality Register */
#define IGP02E1000_PHY_POWER_MGMT	0x19
#define IGP01E1000_PHY_PAGE_SELECT	0x1F /* PHY Page Select Core Register */

/* PHY Control Register */
#define MII_CR_SPEED_SELECT_MSB		0x0040	/* bits 6,13: 10=1000, 01=100, 00=10 */
#define MII_CR_COLL_TEST_ENABLE		0x0080	/* Collision test enable */
#define MII_CR_FULL_DUPLEX		0x0100	/* FDX =1, half duplex =0 */
#define MII_CR_RESTART_AUTO_NEG		0x0200	/* Restart auto negotiation */
#define MII_CR_ISOLATE			0x0400	/* Isolate PHY from MII */
#define MII_CR_POWER_DOWN		0x0800	/* Power down */
#define MII_CR_AUTO_NEG_EN		0x1000	/* Auto Neg Enable */
#define MII_CR_SPEED_SELECT_LSB		0x2000	/* bits 6,13: 10=1000, 01=100, 00=10 */
#define MII_CR_LOOPBACK			0x4000	/* 0 = normal, 1 = loopback */
#define MII_CR_RESET			0x8000	/* 0 = normal, 1 = PHY reset */

/* PHY Status Register */
#define MII_SR_EXTENDED_CAPS		0x0001	/* Extended register capabilities */
#define MII_SR_JABBER_DETECT		0x0002	/* Jabber Detected */
#define MII_SR_LINK_STATUS		0x0004	/* Link Status 1 = link */
#define MII_SR_AUTONEG_CAPS		0x0008	/* Auto Neg Capable */
#define MII_SR_REMOTE_FAULT		0x0010	/* Remote Fault Detect */
#define MII_SR_AUTONEG_COMPLETE		0x0020	/* Auto Neg Complete */
#define MII_SR_PREAMBLE_SUPPRESS	0x0040	/* Preamble may be suppressed */
#define MII_SR_EXTENDED_STATUS		0x0100	/* Ext. status info in Reg 0x0F */
#define MII_SR_100T2_HD_CAPS		0x0200	/* 100T2 Half Duplex Capable */
#define MII_SR_100T2_FD_CAPS		0x0400	/* 100T2 Full Duplex Capable */
#define MII_SR_10T_HD_CAPS		0x0800	/* 10T	 Half Duplex Capable */
#define MII_SR_10T_FD_CAPS		0x1000	/* 10T	 Full Duplex Capable */
#define MII_SR_100X_HD_CAPS		0x2000	/* 100X  Half Duplex Capable */
#define MII_SR_100X_FD_CAPS		0x4000	/* 100X  Full Duplex Capable */
#define MII_SR_100T4_CAPS		0x8000	/* 100T4 Capable */

/* Autoneg Advertisement Register */
#define NWAY_AR_SELECTOR_FIELD		0x0001	/* indicates IEEE 802.3 CSMA/CD */
#define NWAY_AR_10T_HD_CAPS		0x0020	/* 10T	 Half Duplex Capable */
#define NWAY_AR_10T_FD_CAPS		0x0040	/* 10T	 Full Duplex Capable */
#define NWAY_AR_100TX_HD_CAPS		0x0080	/* 100TX Half Duplex Capable */
#define NWAY_AR_100TX_FD_CAPS		0x0100	/* 100TX Full Duplex Capable */
#define NWAY_AR_100T4_CAPS		0x0200	/* 100T4 Capable */
#define NWAY_AR_PAUSE			0x0400	/* Pause operation desired */
#define NWAY_AR_ASM_DIR		0x0800	/* Asymmetric Pause Direction bit */
#define NWAY_AR_REMOTE_FAULT		0x2000	/* Remote Fault detected */
#define NWAY_AR_NEXT_PAGE		0x8000	/* Next Page ability supported */

/* Link Partner Ability Register (Base Page) */
#define NWAY_LPAR_SELECTOR_FIELD	0x0000	/* LP protocol selector field */
#define NWAY_LPAR_10T_HD_CAPS		0x0020	/* LP is 10T   Half Duplex Capable */
#define NWAY_LPAR_10T_FD_CAPS		0x0040	/* LP is 10T   Full Duplex Capable */
#define NWAY_LPAR_100TX_HD_CAPS	0x0080	/* LP is 100TX Half Duplex Capable */
#define NWAY_LPAR_100TX_FD_CAPS	0x0100	/* LP is 100TX Full Duplex Capable */
#define NWAY_LPAR_100T4_CAPS		0x0200	/* LP is 100T4 Capable */
#define NWAY_LPAR_PAUSE			0x0400	/* LP Pause operation desired */
#define NWAY_LPAR_ASM_DIR		0x0800	/* LP Asymmetric Pause Direction bit */
#define NWAY_LPAR_REMOTE_FAULT		0x2000	/* LP has detected Remote Fault */
#define NWAY_LPAR_ACKNOWLEDGE		0x4000	/* LP has rx'd link code word */
#define NWAY_LPAR_NEXT_PAGE		0x8000	/* Next Page ability supported */

/* Autoneg Expansion Register */
#define NWAY_ER_LP_NWAY_CAPS		0x0001	/* LP has Auto Neg Capability */
#define NWAY_ER_PAGE_RXD		0x0002	/* LP is 10T   Half Duplex Capable */
#define NWAY_ER_NEXT_PAGE_CAPS		0x0004	/* LP is 10T   Full Duplex Capable */
#define NWAY_ER_LP_NEXT_PAGE_CAPS	0x0008	/* LP is 100TX Half Duplex Capable */
#define NWAY_ER_PAR_DETECT_FAULT	0x0100	/* LP is 100TX Full Duplex Capable */

/* Next Page TX Register */
#define NPTX_MSG_CODE_FIELD		0x0001	/* NP msg code or unformatted data */
#define NPTX_TOGGLE			0x0800	/* Toggles between exchanges
						 * of different NP
						 */
#define NPTX_ACKNOWLDGE2		0x1000	/* 1 = will comply with msg
						 * 0 = cannot comply with msg
						 */
#define NPTX_MSG_PAGE			0x2000	/* formatted(1)/unformatted(0) pg */
#define NPTX_NEXT_PAGE			0x8000	/* 1 = addition NP will follow
						 * 0 = sending last NP
						 */

/* Link Partner Next Page Register */
#define LP_RNPR_MSG_CODE_FIELD		0x0001	/* NP msg code or unformatted data */
#define LP_RNPR_TOGGLE			0x0800	/* Toggles between exchanges
						 * of different NP
						 */
#define LP_RNPR_ACKNOWLDGE2		0x1000	/* 1 = will comply with msg
						 * 0 = cannot comply with msg
						 */
#define LP_RNPR_MSG_PAGE		0x2000	/* formatted(1)/unformatted(0) pg */
#define LP_RNPR_ACKNOWLDGE		0x4000	/* 1 = ACK / 0 = NO ACK */
#define LP_RNPR_NEXT_PAGE		0x8000	/* 1 = addition NP will follow
						 * 0 = sending last NP
						 */

/* 1000BASE-T Control Register */
#define CR_1000T_ASYM_PAUSE		0x0080	/* Advertise asymmetric pause bit */
#define CR_1000T_HD_CAPS		0x0100	/* Advertise 1000T HD capability */
#define CR_1000T_FD_CAPS		0x0200	/* Advertise 1000T FD capability  */
#define CR_1000T_REPEATER_DTE		0x0400	/* 1=Repeater/switch device port */
						/* 0=DTE device */
#define CR_1000T_MS_VALUE		0x0800	/* 1=Configure PHY as Master */
						/* 0=Configure PHY as Slave */
#define CR_1000T_MS_ENABLE		0x1000	/* 1=Master/Slave manual config value */
						/* 0=Automatic Master/Slave config */
#define CR_1000T_TEST_MODE_NORMAL	0x0000	/* Normal Operation */
#define CR_1000T_TEST_MODE_1		0x2000	/* Transmit Waveform test */
#define CR_1000T_TEST_MODE_2		0x4000	/* Master Transmit Jitter test */
#define CR_1000T_TEST_MODE_3		0x6000	/* Slave Transmit Jitter test */
#define CR_1000T_TEST_MODE_4		0x8000	/* Transmitter Distortion test */

/* 1000BASE-T Status Register */
#define SR_1000T_IDLE_ERROR_CNT	0x00FF	/* Num idle errors since last read */
#define SR_1000T_ASYM_PAUSE_DIR	0x0100	/* LP asymmetric pause direction bit */
#define SR_1000T_LP_HD_CAPS		0x0400	/* LP is 1000T HD capable */
#define SR_1000T_LP_FD_CAPS		0x0800	/* LP is 1000T FD capable */
#define SR_1000T_REMOTE_RX_STATUS	0x1000	/* Remote receiver OK */
#define SR_1000T_LOCAL_RX_STATUS	0x2000	/* Local receiver OK */
#define SR_1000T_MS_CONFIG_RES		0x4000	/* 1=Local TX is Master, 0=Slave */
#define SR_1000T_MS_CONFIG_FAULT	0x8000	/* Master/Slave config fault */
#define SR_1000T_REMOTE_RX_STATUS_SHIFT 12
#define SR_1000T_LOCAL_RX_STATUS_SHIFT	13

/* Extended Status Register */
#define IEEE_ESR_1000T_HD_CAPS		0x1000	/* 1000T HD capable */
#define IEEE_ESR_1000T_FD_CAPS		0x2000	/* 1000T FD capable */
#define IEEE_ESR_1000X_HD_CAPS		0x4000	/* 1000X HD capable */
#define IEEE_ESR_1000X_FD_CAPS		0x8000	/* 1000X FD capable */

#define PHY_TX_POLARITY_MASK		0x0100	/* register 10h bit 8 (polarity bit) */
#define PHY_TX_NORMAL_POLARITY		0	/* register 10h bit 8 (normal polarity) */

#define AUTO_POLARITY_DISABLE		0x0010	/* register 11h bit 4 */
						/* (0=enable, 1=disable) */

/* M88E1000 PHY Specific Control Register */
#define M88E1000_PSCR_JABBER_DISABLE	0x0001	/* 1=Jabber Function disabled */
#define M88E1000_PSCR_POLARITY_REVERSAL 0x0002	/* 1=Polarity Reversal enabled */
#define M88E1000_PSCR_SQE_TEST		0x0004	/* 1=SQE Test enabled */
#define M88E1000_PSCR_CLK125_DISABLE	0x0010	/* 1=CLK125 low,
						 * 0=CLK125 toggling
						 */
#define M88E1000_PSCR_MDI_MANUAL_MODE	0x0000	/* MDI Crossover Mode bits 6:5 */
						/* Manual MDI configuration */
#define M88E1000_PSCR_MDIX_MANUAL_MODE	0x0020	/* Manual MDIX configuration */
#define M88E1000_PSCR_AUTO_X_1000T	0x0040	/* 1000BASE-T: Auto crossover,
						 *  100BASE-TX/10BASE-T:
						 *  MDI Mode
						 */
#define M88E1000_PSCR_AUTO_X_MODE	0x0060	/* Auto crossover enabled
						 * all speeds.
						 */
#define M88E1000_PSCR_10BT_EXT_DIST_ENABLE 0x0080
						/* 1=Enable Extended 10BASE-T distance
						 * (Lower 10BASE-T RX Threshold)
						 * 0=Normal 10BASE-T RX Threshold */
#define M88E1000_PSCR_MII_5BIT_ENABLE	0x0100
						/* 1=5-Bit interface in 100BASE-TX
						 * 0=MII interface in 100BASE-TX */
#define M88E1000_PSCR_SCRAMBLER_DISABLE 0x0200	/* 1=Scrambler disable */
#define M88E1000_PSCR_FORCE_LINK_GOOD	0x0400	/* 1=Force link good */
#define M88E1000_PSCR_ASSERT_CRS_ON_TX	0x0800	/* 1=Assert CRS on Transmit */

#define M88E1000_PSCR_POLARITY_REVERSAL_SHIFT	 1
#define M88E1000_PSCR_AUTO_X_MODE_SHIFT		 5
#define M88E1000_PSCR_10BT_EXT_DIST_ENABLE_SHIFT 7

/* M88E1000 PHY Specific Status Register */
#define M88E1000_PSSR_JABBER		0x0001	/* 1=Jabber */
#define M88E1000_PSSR_REV_POLARITY	0x0002	/* 1=Polarity reversed */
#define M88E1000_PSSR_MDIX		0x0040	/* 1=MDIX; 0=MDI */
#define M88E1000_PSSR_CABLE_LENGTH	0x0380	/* 0=<50M;1=50-80M;2=80-110M;
						 * 3=110-140M;4=>140M */
#define M88E1000_PSSR_LINK		0x0400	/* 1=Link up, 0=Link down */
#define M88E1000_PSSR_SPD_DPLX_RESOLVED 0x0800	/* 1=Speed & Duplex resolved */
#define M88E1000_PSSR_PAGE_RCVD		0x1000	/* 1=Page received */
#define M88E1000_PSSR_DPLX		0x2000	/* 1=Duplex 0=Half Duplex */
#define M88E1000_PSSR_SPEED		0xC000	/* Speed, bits 14:15 */
#define M88E1000_PSSR_10MBS		0x0000	/* 00=10Mbs */
#define M88E1000_PSSR_100MBS		0x4000	/* 01=100Mbs */
#define M88E1000_PSSR_1000MBS		0x8000	/* 10=1000Mbs */

#define M88E1000_PSSR_REV_POLARITY_SHIFT 1
#define M88E1000_PSSR_MDIX_SHIFT	 6
#define M88E1000_PSSR_CABLE_LENGTH_SHIFT 7

/* M88E1000 Extended PHY Specific Control Register */
#define M88E1000_EPSCR_FIBER_LOOPBACK	0x4000	/* 1=Fiber loopback */
#define M88E1000_EPSCR_DOWN_NO_IDLE	0x8000	/* 1=Lost lock detect enabled.
						 * Will assert lost lock and bring
						 * link down if idle not seen
						 * within 1ms in 1000BASE-T
						 */
/* Number of times we will attempt to autonegotiate before downshifting if we
 * are the master */
#define M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK 0x0C00
#define M88E1000_EPSCR_MASTER_DOWNSHIFT_1X   0x0000
#define M88E1000_EPSCR_MASTER_DOWNSHIFT_2X   0x0400
#define M88E1000_EPSCR_MASTER_DOWNSHIFT_3X   0x0800
#define M88E1000_EPSCR_MASTER_DOWNSHIFT_4X   0x0C00
/* Number of times we will attempt to autonegotiate before downshifting if we
 * are the slave */
#define M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK  0x0300
#define M88E1000_EPSCR_SLAVE_DOWNSHIFT_DIS   0x0000
#define M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X    0x0100
#define M88E1000_EPSCR_SLAVE_DOWNSHIFT_2X    0x0200
#define M88E1000_EPSCR_SLAVE_DOWNSHIFT_3X    0x0300
#define M88E1000_EPSCR_TX_CLK_2_5	0x0060	/* 2.5 MHz TX_CLK */
#define M88E1000_EPSCR_TX_CLK_25	0x0070	/* 25  MHz TX_CLK */
#define M88E1000_EPSCR_TX_CLK_0	0x0000	/* NO  TX_CLK */

/* Bit definitions for valid PHY IDs. */
#define M88E1000_E_PHY_ID		0x01410C50
#define M88E1000_I_PHY_ID		0x01410C30
#define M88E1011_I_PHY_ID		0x01410C20
#define M88E1000_12_PHY_ID		M88E1000_E_PHY_ID
#define M88E1000_14_PHY_ID		M88E1000_E_PHY_ID
#define IGP01E1000_I_PHY_ID		0x02A80380

/* Miscellaneous PHY bit definitions. */
#define PHY_PREAMBLE			0xFFFFFFFF
#define PHY_SOF				0x01
#define PHY_OP_READ			0x02
#define PHY_OP_WRITE			0x01
#define PHY_TURNAROUND			0x02
#define PHY_PREAMBLE_SIZE		32
#define MII_CR_SPEED_1000		0x0040
#define MII_CR_SPEED_100		0x2000
#define MII_CR_SPEED_10		0x0000
#define E1000_PHY_ADDRESS		0x01
#define PHY_AUTO_NEG_TIME		45	/* 4.5 Seconds */
#define PHY_FORCE_TIME			20	/* 2.0 Seconds */
#define PHY_REVISION_MASK		0xFFFFFFF0
#define DEVICE_SPEED_MASK		0x00000300	/* Device Ctrl Reg Speed Mask */
#define REG4_SPEED_MASK		0x01E0
#define REG9_SPEED_MASK		0x0300
#define ADVERTISE_10_HALF		0x0001
#define ADVERTISE_10_FULL		0x0002
#define ADVERTISE_100_HALF		0x0004
#define ADVERTISE_100_FULL		0x0008
#define ADVERTISE_1000_HALF		0x0010
#define ADVERTISE_1000_FULL		0x0020
#define AUTONEG_ADVERTISE_SPEED_DEFAULT 0x002F	/* Everything but 1000-Half */

#endif	/* _E1000_HW_H_ */