netxen_nic.h

/*
 * Copyright (C) 2003 - 2006 NetXen, Inc.
 * 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:
 *    info@netxen.com
 * NetXen,
 * 3965 Freedom Circle, Fourth floor,
 * Santa Clara, CA 95054
 */

#ifndef _NETXEN_NIC_H_
#define _NETXEN_NIC_H_

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/compiler.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ip.h>
#include <linux/in.h>
#include <linux/tcp.h>
#include <linux/skbuff.h>
#include <linux/version.h>

#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/interrupt.h>
#include <linux/timer.h>

#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/vmalloc.h>

#include <asm/system.h>
#include <asm/io.h>
#include <asm/byteorder.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>

#include "netxen_nic_hw.h"

#define _NETXEN_NIC_LINUX_MAJOR 4
#define _NETXEN_NIC_LINUX_MINOR 0
#define _NETXEN_NIC_LINUX_SUBVERSION 0
#define NETXEN_NIC_LINUX_VERSIONID  "4.0.0"

#define NETXEN_VERSION_CODE(a, b, c)	(((a) << 16) + ((b) << 8) + (c))

#define NETXEN_NUM_FLASH_SECTORS (64)
#define NETXEN_FLASH_SECTOR_SIZE (64 * 1024)
#define NETXEN_FLASH_TOTAL_SIZE  (NETXEN_NUM_FLASH_SECTORS \
					* NETXEN_FLASH_SECTOR_SIZE)

#define PHAN_VENDOR_ID 0x4040

#define RCV_DESC_RINGSIZE	\
	(sizeof(struct rcv_desc) * adapter->max_rx_desc_count)
#define STATUS_DESC_RINGSIZE	\
	(sizeof(struct status_desc)* adapter->max_rx_desc_count)
#define LRO_DESC_RINGSIZE	\
	(sizeof(rcvDesc_t) * adapter->max_lro_rx_desc_count)
#define TX_RINGSIZE	\
	(sizeof(struct netxen_cmd_buffer) * adapter->max_tx_desc_count)
#define RCV_BUFFSIZE	\
	(sizeof(struct netxen_rx_buffer) * rds_ring->max_rx_desc_count)
#define find_diff_among(a,b,range) ((a)<(b)?((b)-(a)):((b)+(range)-(a)))

#define NETXEN_NETDEV_STATUS		0x1
#define NETXEN_RCV_PRODUCER_OFFSET	0
#define NETXEN_RCV_PEG_DB_ID		2
#define NETXEN_HOST_DUMMY_DMA_SIZE 1024
#define FLASH_SUCCESS 0

#define ADDR_IN_WINDOW1(off)	\
	((off > NETXEN_CRB_PCIX_HOST2) && (off < NETXEN_CRB_MAX)) ? 1 : 0

/*
 * normalize a 64MB crb address to 32MB PCI window
 * To use NETXEN_CRB_NORMALIZE, window _must_ be set to 1
 */
#define NETXEN_CRB_NORMAL(reg)	\
	((reg) - NETXEN_CRB_PCIX_HOST2 + NETXEN_CRB_PCIX_HOST)

#define NETXEN_CRB_NORMALIZE(adapter, reg) \
	pci_base_offset(adapter, NETXEN_CRB_NORMAL(reg))

#define DB_NORMALIZE(adapter, off) \
	(adapter->ahw.db_base + (off))

#define NX_P2_C0		0x24
#define NX_P2_C1		0x25
#define NX_P3_A0		0x30
#define NX_P3_A2		0x30
#define NX_P3_B0		0x40
#define NX_P3_B1		0x41

#define NX_IS_REVISION_P2(REVISION)     (REVISION <= NX_P2_C1)
#define NX_IS_REVISION_P3(REVISION)     (REVISION >= NX_P3_A0)

#define FIRST_PAGE_GROUP_START	0
#define FIRST_PAGE_GROUP_END	0x100000

#define SECOND_PAGE_GROUP_START	0x6000000
#define SECOND_PAGE_GROUP_END	0x68BC000

#define THIRD_PAGE_GROUP_START	0x70E4000
#define THIRD_PAGE_GROUP_END	0x8000000

#define FIRST_PAGE_GROUP_SIZE  FIRST_PAGE_GROUP_END - FIRST_PAGE_GROUP_START
#define SECOND_PAGE_GROUP_SIZE SECOND_PAGE_GROUP_END - SECOND_PAGE_GROUP_START
#define THIRD_PAGE_GROUP_SIZE  THIRD_PAGE_GROUP_END - THIRD_PAGE_GROUP_START

#define P2_MAX_MTU                     (8000)
#define P3_MAX_MTU                     (9600)
#define NX_ETHERMTU                    1500
#define NX_MAX_ETHERHDR                32 /* This contains some padding */

#define NX_RX_NORMAL_BUF_MAX_LEN       (NX_MAX_ETHERHDR + NX_ETHERMTU)
#define NX_P2_RX_JUMBO_BUF_MAX_LEN     (NX_MAX_ETHERHDR + P2_MAX_MTU)
#define NX_P3_RX_JUMBO_BUF_MAX_LEN     (NX_MAX_ETHERHDR + P3_MAX_MTU)
#define NX_CT_DEFAULT_RX_BUF_LEN	2048

#define MAX_RX_BUFFER_LENGTH		1760
#define MAX_RX_JUMBO_BUFFER_LENGTH 	8062
#define MAX_RX_LRO_BUFFER_LENGTH	((48*1024)-512)
#define RX_DMA_MAP_LEN			(MAX_RX_BUFFER_LENGTH - 2)
#define RX_JUMBO_DMA_MAP_LEN	\
	(MAX_RX_JUMBO_BUFFER_LENGTH - 2)
#define RX_LRO_DMA_MAP_LEN		(MAX_RX_LRO_BUFFER_LENGTH - 2)

/*
 * Maximum number of ring contexts
 */
#define MAX_RING_CTX 1

/* Opcodes to be used with the commands */
#define TX_ETHER_PKT	0x01
#define TX_TCP_PKT	0x02
#define TX_UDP_PKT	0x03
#define TX_IP_PKT	0x04
#define TX_TCP_LSO	0x05
#define TX_TCP_LSO6	0x06
#define TX_IPSEC	0x07
#define TX_IPSEC_CMD	0x0a
#define TX_TCPV6_PKT	0x0b
#define TX_UDPV6_PKT	0x0c

/* The following opcodes are for internal consumption. */
#define NETXEN_CONTROL_OP	0x10
#define PEGNET_REQUEST		0x11

#define	MAX_NUM_CARDS		4

#define MAX_BUFFERS_PER_CMD	32

/*
 * Following are the states of the Phantom. Phantom will set them and
 * Host will read to check if the fields are correct.
 */
#define PHAN_INITIALIZE_START		0xff00
#define PHAN_INITIALIZE_FAILED		0xffff
#define PHAN_INITIALIZE_COMPLETE	0xff01

/* Host writes the following to notify that it has done the init-handshake */
#define PHAN_INITIALIZE_ACK	0xf00f

#define NUM_RCV_DESC_RINGS	3	/* No of Rcv Descriptor contexts */

/* descriptor types */
#define RCV_DESC_NORMAL		0x01
#define RCV_DESC_JUMBO		0x02
#define RCV_DESC_LRO		0x04
#define RCV_DESC_NORMAL_CTXID	0
#define RCV_DESC_JUMBO_CTXID	1
#define RCV_DESC_LRO_CTXID	2

#define RCV_DESC_TYPE(ID) \
	((ID == RCV_DESC_JUMBO_CTXID)	\
		? RCV_DESC_JUMBO	\
		: ((ID == RCV_DESC_LRO_CTXID)	\
			? RCV_DESC_LRO :	\
			(RCV_DESC_NORMAL)))

#define MAX_CMD_DESCRIPTORS		4096
#define MAX_RCV_DESCRIPTORS		16384
#define MAX_CMD_DESCRIPTORS_HOST	(MAX_CMD_DESCRIPTORS / 4)
#define MAX_RCV_DESCRIPTORS_1G		(MAX_RCV_DESCRIPTORS / 4)
#define MAX_RCV_DESCRIPTORS_10G		8192
#define MAX_JUMBO_RCV_DESCRIPTORS	1024
#define MAX_LRO_RCV_DESCRIPTORS		64
#define MAX_RCVSTATUS_DESCRIPTORS	MAX_RCV_DESCRIPTORS
#define MAX_JUMBO_RCV_DESC	MAX_JUMBO_RCV_DESCRIPTORS
#define MAX_RCV_DESC		MAX_RCV_DESCRIPTORS
#define MAX_RCVSTATUS_DESC	MAX_RCV_DESCRIPTORS
#define MAX_EPG_DESCRIPTORS	(MAX_CMD_DESCRIPTORS * 8)
#define NUM_RCV_DESC		(MAX_RCV_DESC + MAX_JUMBO_RCV_DESCRIPTORS + \
				 MAX_LRO_RCV_DESCRIPTORS)
#define MIN_TX_COUNT	4096
#define MIN_RX_COUNT	4096
#define NETXEN_CTX_SIGNATURE	0xdee0
#define NETXEN_RCV_PRODUCER(ringid)	(ringid)
#define MAX_FRAME_SIZE	0x10000	/* 64K MAX size for LSO */

#define PHAN_PEG_RCV_INITIALIZED	0xff01
#define PHAN_PEG_RCV_START_INITIALIZE	0xff00

#define get_next_index(index, length)	\
	(((index) + 1) & ((length) - 1))

#define get_index_range(index,length,count)	\
	(((index) + (count)) & ((length) - 1))

#define MPORT_SINGLE_FUNCTION_MODE 0x1111
#define MPORT_MULTI_FUNCTION_MODE 0x2222

#include "netxen_nic_phan_reg.h"

/*
 * NetXen host-peg signal message structure
 *
 *	Bit 0-1		: peg_id => 0x2 for tx and 01 for rx
 *	Bit 2		: priv_id => must be 1
 *	Bit 3-17	: count => for doorbell
 *	Bit 18-27	: ctx_id => Context id
 *	Bit 28-31	: opcode
 */

typedef u32 netxen_ctx_msg;

#define netxen_set_msg_peg_id(config_word, val)	\
	((config_word) &= ~3, (config_word) |= val & 3)
#define netxen_set_msg_privid(config_word)	\
	((config_word) |= 1 << 2)
#define netxen_set_msg_count(config_word, val)	\
	((config_word) &= ~(0x7fff<<3), (config_word) |= (val & 0x7fff) << 3)
#define netxen_set_msg_ctxid(config_word, val)	\
	((config_word) &= ~(0x3ff<<18), (config_word) |= (val & 0x3ff) << 18)
#define netxen_set_msg_opcode(config_word, val)	\
	((config_word) &= ~(0xf<<28), (config_word) |= (val & 0xf) << 28)

struct netxen_rcv_context {
	__le64 rcv_ring_addr;
	__le32 rcv_ring_size;
	__le32 rsrvd;
};

struct netxen_ring_ctx {

	/* one command ring */
	__le64 cmd_consumer_offset;
	__le64 cmd_ring_addr;
	__le32 cmd_ring_size;
	__le32 rsrvd;

	/* three receive rings */
	struct netxen_rcv_context rcv_ctx[3];

	/* one status ring */
	__le64 sts_ring_addr;
	__le32 sts_ring_size;

	__le32 ctx_id;
} __attribute__ ((aligned(64)));

/*
 * Following data structures describe the descriptors that will be used.
 * Added fileds of tcpHdrSize and ipHdrSize, The driver needs to do it only when
 * we are doing LSO (above the 1500 size packet) only.
 */

/*
 * The size of reference handle been changed to 16 bits to pass the MSS fields
 * for the LSO packet
 */

#define FLAGS_CHECKSUM_ENABLED	0x01
#define FLAGS_LSO_ENABLED	0x02
#define FLAGS_IPSEC_SA_ADD	0x04
#define FLAGS_IPSEC_SA_DELETE	0x08
#define FLAGS_VLAN_TAGGED	0x10

#define netxen_set_cmd_desc_port(cmd_desc, var)	\
	((cmd_desc)->port_ctxid |= ((var) & 0x0F))
#define netxen_set_cmd_desc_ctxid(cmd_desc, var)	\
	((cmd_desc)->port_ctxid |= ((var) << 4 & 0xF0))

#define netxen_set_cmd_desc_flags(cmd_desc, val)	\
	(cmd_desc)->flags_opcode = ((cmd_desc)->flags_opcode & \
		~cpu_to_le16(0x7f)) | cpu_to_le16((val) & 0x7f)
#define netxen_set_cmd_desc_opcode(cmd_desc, val)	\
	(cmd_desc)->flags_opcode = ((cmd_desc)->flags_opcode & \
		~cpu_to_le16((u16)0x3f << 7)) | cpu_to_le16(((val) & 0x3f) << 7)

#define netxen_set_cmd_desc_num_of_buff(cmd_desc, val)	\
	(cmd_desc)->num_of_buffers_total_length = \
		((cmd_desc)->num_of_buffers_total_length & \
		~cpu_to_le32(0xff)) | cpu_to_le32((val) & 0xff)
#define netxen_set_cmd_desc_totallength(cmd_desc, val)	\
	(cmd_desc)->num_of_buffers_total_length = \
		((cmd_desc)->num_of_buffers_total_length & \
		~cpu_to_le32((u32)0xffffff << 8)) | \
		cpu_to_le32(((val) & 0xffffff) << 8)

#define netxen_get_cmd_desc_opcode(cmd_desc)	\
	((le16_to_cpu((cmd_desc)->flags_opcode) >> 7) & 0x003f)
#define netxen_get_cmd_desc_totallength(cmd_desc)	\
	((le32_to_cpu((cmd_desc)->num_of_buffers_total_length) >> 8) & 0xffffff)

struct cmd_desc_type0 {
	u8 tcp_hdr_offset;	/* For LSO only */
	u8 ip_hdr_offset;	/* For LSO only */
	/* Bit pattern: 0-6 flags, 7-12 opcode, 13-15 unused */
	__le16 flags_opcode;
	/* Bit pattern: 0-7 total number of segments,
	   8-31 Total size of the packet */
	__le32 num_of_buffers_total_length;
	union {
		struct {
			__le32 addr_low_part2;
			__le32 addr_high_part2;
		};
		__le64 addr_buffer2;
	};

	__le16 reference_handle;	/* changed to u16 to add mss */
	__le16 mss;		/* passed by NDIS_PACKET for LSO */
	/* Bit pattern 0-3 port, 0-3 ctx id */
	u8 port_ctxid;
	u8 total_hdr_length;	/* LSO only : MAC+IP+TCP Hdr size */
	__le16 conn_id;		/* IPSec offoad only */

	union {
		struct {
			__le32 addr_low_part3;
			__le32 addr_high_part3;
		};
		__le64 addr_buffer3;
	};
	union {
		struct {
			__le32 addr_low_part1;
			__le32 addr_high_part1;
		};
		__le64 addr_buffer1;
	};

	__le16 buffer1_length;
	__le16 buffer2_length;
	__le16 buffer3_length;
	__le16 buffer4_length;

	union {
		struct {
			__le32 addr_low_part4;
			__le32 addr_high_part4;
		};
		__le64 addr_buffer4;
	};

	__le64 unused;

} __attribute__ ((aligned(64)));

/* Note: sizeof(rcv_desc) should always be a mutliple of 2 */
struct rcv_desc {
	__le16 reference_handle;
	__le16 reserved;
	__le32 buffer_length;	/* allocated buffer length (usually 2K) */
	__le64 addr_buffer;
};

/* opcode field in status_desc */
#define NETXEN_NIC_RXPKT_DESC  0x04
#define NETXEN_OLD_RXPKT_DESC  0x3f

/* for status field in status_desc */
#define STATUS_NEED_CKSUM	(1)
#define STATUS_CKSUM_OK		(2)

/* owner bits of status_desc */
#define STATUS_OWNER_HOST	(0x1)
#define STATUS_OWNER_PHANTOM	(0x2)

#define NETXEN_PROT_IP		(1)
#define NETXEN_PROT_UNKNOWN	(0)

/* Note: sizeof(status_desc) should always be a mutliple of 2 */

#define netxen_get_sts_desc_lro_cnt(status_desc)	\
	((status_desc)->lro & 0x7F)
#define netxen_get_sts_desc_lro_last_frag(status_desc)	\
	(((status_desc)->lro & 0x80) >> 7)

#define netxen_get_sts_port(sts_data)	\
	((sts_data) & 0x0F)
#define netxen_get_sts_status(sts_data)	\
	(((sts_data) >> 4) & 0x0F)
#define netxen_get_sts_type(sts_data)	\
	(((sts_data) >> 8) & 0x0F)
#define netxen_get_sts_totallength(sts_data)	\
	(((sts_data) >> 12) & 0xFFFF)
#define netxen_get_sts_refhandle(sts_data)	\
	(((sts_data) >> 28) & 0xFFFF)
#define netxen_get_sts_prot(sts_data)	\
	(((sts_data) >> 44) & 0x0F)
#define netxen_get_sts_pkt_offset(sts_data)	\
	(((sts_data) >> 48) & 0x1F)
#define netxen_get_sts_opcode(sts_data)	\
	(((sts_data) >> 58) & 0x03F)

#define netxen_get_sts_owner(status_desc)	\
	((le64_to_cpu((status_desc)->status_desc_data) >> 56) & 0x03)
#define netxen_set_sts_owner(status_desc, val)	{ \
	(status_desc)->status_desc_data = \
		((status_desc)->status_desc_data & \
		~cpu_to_le64(0x3ULL << 56)) | \
		cpu_to_le64((u64)((val) & 0x3) << 56); \
}

struct status_desc {
	/* Bit pattern: 0-3 port, 4-7 status, 8-11 type, 12-27 total_length
	   28-43 reference_handle, 44-47 protocol, 48-52 pkt_offset
	   53-55 desc_cnt, 56-57 owner, 58-63 opcode
	 */
	__le64 status_desc_data;
	union {
		struct {
			__le32 hash_value;
			u8 hash_type;
			u8 msg_type;
			u8 unused;
			union {
				/* Bit pattern: 0-6 lro_count indicates frag
				 * sequence, 7 last_frag indicates last frag
				 */
				u8 lro;

				/* chained buffers */
				u8 nr_frags;
			};
		};
		struct {
			__le16 frag_handles[4];
		};
	};
} __attribute__ ((aligned(16)));

enum {
	NETXEN_RCV_PEG_0 = 0,
	NETXEN_RCV_PEG_1
};
/* The version of the main data structure */
#define	NETXEN_BDINFO_VERSION 1

/* Magic number to let user know flash is programmed */
#define	NETXEN_BDINFO_MAGIC 0x12345678

/* Max number of Gig ports on a Phantom board */
#define NETXEN_MAX_PORTS 4

typedef enum {
	NETXEN_BRDTYPE_P1_BD = 0x0000,
	NETXEN_BRDTYPE_P1_SB = 0x0001,
	NETXEN_BRDTYPE_P1_SMAX = 0x0002,
	NETXEN_BRDTYPE_P1_SOCK = 0x0003,

	NETXEN_BRDTYPE_P2_SOCK_31 = 0x0008,
	NETXEN_BRDTYPE_P2_SOCK_35 = 0x0009,
	NETXEN_BRDTYPE_P2_SB35_4G = 0x000a,
	NETXEN_BRDTYPE_P2_SB31_10G = 0x000b,
	NETXEN_BRDTYPE_P2_SB31_2G = 0x000c,

	NETXEN_BRDTYPE_P2_SB31_10G_IMEZ = 0x000d,
	NETXEN_BRDTYPE_P2_SB31_10G_HMEZ = 0x000e,
	NETXEN_BRDTYPE_P2_SB31_10G_CX4 = 0x000f,

	NETXEN_BRDTYPE_P3_REF_QG = 0x0021,
	NETXEN_BRDTYPE_P3_HMEZ = 0x0022,
	NETXEN_BRDTYPE_P3_10G_CX4_LP = 0x0023,
	NETXEN_BRDTYPE_P3_4_GB = 0x0024,
	NETXEN_BRDTYPE_P3_IMEZ = 0x0025,
	NETXEN_BRDTYPE_P3_10G_SFP_PLUS = 0x0026,
	NETXEN_BRDTYPE_P3_10000_BASE_T = 0x0027,
	NETXEN_BRDTYPE_P3_XG_LOM = 0x0028,
	NETXEN_BRDTYPE_P3_4_GB_MM = 0x0029,
	NETXEN_BRDTYPE_P3_10G_SFP_CT = 0x002a,
	NETXEN_BRDTYPE_P3_10G_SFP_QT = 0x002b,
	NETXEN_BRDTYPE_P3_10G_CX4 = 0x0031,
	NETXEN_BRDTYPE_P3_10G_XFP = 0x0032

} netxen_brdtype_t;

typedef enum {
	NETXEN_BRDMFG_INVENTEC = 1
} netxen_brdmfg;

typedef enum {
	MEM_ORG_128Mbx4 = 0x0,	/* DDR1 only */
	MEM_ORG_128Mbx8 = 0x1,	/* DDR1 only */
	MEM_ORG_128Mbx16 = 0x2,	/* DDR1 only */
	MEM_ORG_256Mbx4 = 0x3,
	MEM_ORG_256Mbx8 = 0x4,
	MEM_ORG_256Mbx16 = 0x5,
	MEM_ORG_512Mbx4 = 0x6,
	MEM_ORG_512Mbx8 = 0x7,
	MEM_ORG_512Mbx16 = 0x8,
	MEM_ORG_1Gbx4 = 0x9,
	MEM_ORG_1Gbx8 = 0xa,
	MEM_ORG_1Gbx16 = 0xb,
	MEM_ORG_2Gbx4 = 0xc,
	MEM_ORG_2Gbx8 = 0xd,
	MEM_ORG_2Gbx16 = 0xe,
	MEM_ORG_128Mbx32 = 0x10002,	/* GDDR only */
	MEM_ORG_256Mbx32 = 0x10005	/* GDDR only */
} netxen_mn_mem_org_t;

typedef enum {
	MEM_ORG_512Kx36 = 0x0,
	MEM_ORG_1Mx36 = 0x1,
	MEM_ORG_2Mx36 = 0x2
} netxen_sn_mem_org_t;

typedef enum {
	MEM_DEPTH_4MB = 0x1,
	MEM_DEPTH_8MB = 0x2,
	MEM_DEPTH_16MB = 0x3,
	MEM_DEPTH_32MB = 0x4,
	MEM_DEPTH_64MB = 0x5,
	MEM_DEPTH_128MB = 0x6,
	MEM_DEPTH_256MB = 0x7,
	MEM_DEPTH_512MB = 0x8,
	MEM_DEPTH_1GB = 0x9,
	MEM_DEPTH_2GB = 0xa,
	MEM_DEPTH_4GB = 0xb,
	MEM_DEPTH_8GB = 0xc,
	MEM_DEPTH_16GB = 0xd,
	MEM_DEPTH_32GB = 0xe
} netxen_mem_depth_t;

struct netxen_board_info {
	u32 header_version;

	u32 board_mfg;
	u32 board_type;
	u32 board_num;
	u32 chip_id;
	u32 chip_minor;
	u32 chip_major;
	u32 chip_pkg;
	u32 chip_lot;

	u32 port_mask;		/* available niu ports */
	u32 peg_mask;		/* available pegs */
	u32 icache_ok;		/* can we run with icache? */
	u32 dcache_ok;		/* can we run with dcache? */
	u32 casper_ok;

	u32 mac_addr_lo_0;
	u32 mac_addr_lo_1;
	u32 mac_addr_lo_2;
	u32 mac_addr_lo_3;

	/* MN-related config */
	u32 mn_sync_mode;	/* enable/ sync shift cclk/ sync shift mclk */
	u32 mn_sync_shift_cclk;
	u32 mn_sync_shift_mclk;
	u32 mn_wb_en;
	u32 mn_crystal_freq;	/* in MHz */
	u32 mn_speed;		/* in MHz */
	u32 mn_org;
	u32 mn_depth;
	u32 mn_ranks_0;		/* ranks per slot */
	u32 mn_ranks_1;		/* ranks per slot */
	u32 mn_rd_latency_0;
	u32 mn_rd_latency_1;
	u32 mn_rd_latency_2;
	u32 mn_rd_latency_3;
	u32 mn_rd_latency_4;
	u32 mn_rd_latency_5;
	u32 mn_rd_latency_6;
	u32 mn_rd_latency_7;
	u32 mn_rd_latency_8;
	u32 mn_dll_val[18];
	u32 mn_mode_reg;	/* MIU DDR Mode Register */
	u32 mn_ext_mode_reg;	/* MIU DDR Extended Mode Register */
	u32 mn_timing_0;	/* MIU Memory Control Timing Rgister */
	u32 mn_timing_1;	/* MIU Extended Memory Ctrl Timing Register */
	u32 mn_timing_2;	/* MIU Extended Memory Ctrl Timing2 Register */

	/* SN-related config */
	u32 sn_sync_mode;	/* enable/ sync shift cclk / sync shift mclk */
	u32 sn_pt_mode;		/* pass through mode */
	u32 sn_ecc_en;
	u32 sn_wb_en;
	u32 sn_crystal_freq;
	u32 sn_speed;
	u32 sn_org;
	u32 sn_depth;
	u32 sn_dll_tap;
	u32 sn_rd_latency;

	u32 mac_addr_hi_0;
	u32 mac_addr_hi_1;
	u32 mac_addr_hi_2;
	u32 mac_addr_hi_3;

	u32 magic;		/* indicates flash has been initialized */

	u32 mn_rdimm;
	u32 mn_dll_override;

};

#define FLASH_NUM_PORTS		(4)

struct netxen_flash_mac_addr {
	u32 flash_addr[32];
};

struct netxen_user_old_info {
	u8 flash_md5[16];
	u8 crbinit_md5[16];
	u8 brdcfg_md5[16];
	/* bootloader */
	u32 bootld_version;
	u32 bootld_size;
	u8 bootld_md5[16];
	/* image */
	u32 image_version;
	u32 image_size;
	u8 image_md5[16];
	/* primary image status */
	u32 primary_status;
	u32 secondary_present;

	/* MAC address , 4 ports */
	struct netxen_flash_mac_addr mac_addr[FLASH_NUM_PORTS];
};
#define FLASH_NUM_MAC_PER_PORT	32
struct netxen_user_info {
	u8 flash_md5[16 * 64];
	/* bootloader */
	u32 bootld_version;
	u32 bootld_size;
	/* image */
	u32 image_version;
	u32 image_size;
	/* primary image status */
	u32 primary_status;
	u32 secondary_present;

	/* MAC address , 4 ports, 32 address per port */
	u64 mac_addr[FLASH_NUM_PORTS * FLASH_NUM_MAC_PER_PORT];
	u32 sub_sys_id;
	u8 serial_num[32];

	/* Any user defined data */
};

/*
 * Flash Layout - new format.
 */
struct netxen_new_user_info {
	u8 flash_md5[16 * 64];
	/* bootloader */
	u32 bootld_version;
	u32 bootld_size;
	/* image */
	u32 image_version;
	u32 image_size;
	/* primary image status */
	u32 primary_status;
	u32 secondary_present;

	/* MAC address , 4 ports, 32 address per port */
	u64 mac_addr[FLASH_NUM_PORTS * FLASH_NUM_MAC_PER_PORT];
	u32 sub_sys_id;
	u8 serial_num[32];

	/* Any user defined data */
};

#define SECONDARY_IMAGE_PRESENT 0xb3b4b5b6
#define SECONDARY_IMAGE_ABSENT	0xffffffff
#define PRIMARY_IMAGE_GOOD	0x5a5a5a5a
#define PRIMARY_IMAGE_BAD	0xffffffff

/* Flash memory map */
typedef enum {
	NETXEN_CRBINIT_START = 0,	/* Crbinit section */
	NETXEN_BRDCFG_START = 0x4000,	/* board config */
	NETXEN_INITCODE_START = 0x6000,	/* pegtune code */
	NETXEN_BOOTLD_START = 0x10000,	/* bootld */
	NETXEN_IMAGE_START = 0x43000,	/* compressed image */
	NETXEN_SECONDARY_START = 0x200000,	/* backup images */
	NETXEN_PXE_START = 0x3E0000,	/* user defined region */
	NETXEN_USER_START = 0x3E8000,	/* User defined region for new boards */
	NETXEN_FIXED_START = 0x3F0000	/* backup of crbinit */
} netxen_flash_map_t;

#define NETXEN_USER_START_OLD NETXEN_PXE_START	/* for backward compatibility */

#define NETXEN_FLASH_START		(NETXEN_CRBINIT_START)
#define NETXEN_INIT_SECTOR		(0)
#define NETXEN_PRIMARY_START 		(NETXEN_BOOTLD_START)
#define NETXEN_FLASH_CRBINIT_SIZE 	(0x4000)
#define NETXEN_FLASH_BRDCFG_SIZE 	(sizeof(struct netxen_board_info))
#define NETXEN_FLASH_USER_SIZE		(sizeof(struct netxen_user_info)/sizeof(u32))
#define NETXEN_FLASH_SECONDARY_SIZE 	(NETXEN_USER_START-NETXEN_SECONDARY_START)
#define NETXEN_NUM_PRIMARY_SECTORS	(0x20)
#define NETXEN_NUM_CONFIG_SECTORS 	(1)
#define PFX "NetXen: "
extern char netxen_nic_driver_name[];

/* Note: Make sure to not call this before adapter->port is valid */
#if !defined(NETXEN_DEBUG)
#define DPRINTK(klevel, fmt, args...)	do { \
	} while (0)
#else
#define DPRINTK(klevel, fmt, args...)	do { \
	printk(KERN_##klevel PFX "%s: %s: " fmt, __FUNCTION__,\
		(adapter != NULL && adapter->netdev != NULL) ? \
		adapter->netdev->name : NULL, \
		## args); } while(0)
#endif

/* Number of status descriptors to handle per interrupt */
#define MAX_STATUS_HANDLE	(128)

/*
 * netxen_skb_frag{} is to contain mapping info for each SG list. This
 * has to be freed when DMA is complete. This is part of netxen_tx_buffer{}.
 */
struct netxen_skb_frag {
	u64 dma;
	u32 length;
};

#define _netxen_set_bits(config_word, start, bits, val)	{\
	unsigned long long __tmask = (((1ULL << (bits)) - 1) << (start));\
	unsigned long long __tvalue = (val);    \
	(config_word) &= ~__tmask;      \
	(config_word) |= (((__tvalue) << (start)) & __tmask); \
}

#define _netxen_clear_bits(config_word, start, bits) {\
	unsigned long long __tmask = (((1ULL << (bits)) - 1) << (start));  \
	(config_word) &= ~__tmask; \
}

/*    Following defines are for the state of the buffers    */
#define	NETXEN_BUFFER_FREE	0
#define	NETXEN_BUFFER_BUSY	1

/*
 * There will be one netxen_buffer per skb packet.    These will be
 * used to save the dma info for pci_unmap_page()
 */
struct netxen_cmd_buffer {
	struct sk_buff *skb;
	struct netxen_skb_frag frag_array[MAX_BUFFERS_PER_CMD + 1];
	u32 total_length;
	u32 mss;
	u16 port;
	u8 cmd;
	u8 frag_count;
	unsigned long time_stamp;
	u32 state;
};

/* In rx_buffer, we do not need multiple fragments as is a single buffer */
struct netxen_rx_buffer {
	struct list_head list;
	struct sk_buff *skb;
	u64 dma;
	u16 ref_handle;
	u16 state;
	u32 lro_expected_frags;
	u32 lro_current_frags;
	u32 lro_length;
};

/* Board types */
#define	NETXEN_NIC_GBE	0x01
#define	NETXEN_NIC_XGBE	0x02

/*
 * One hardware_context{} per adapter
 * contains interrupt info as well shared hardware info.
 */
struct netxen_hardware_context {
	void __iomem *pci_base0;
	void __iomem *pci_base1;
	void __iomem *pci_base2;
	unsigned long first_page_group_end;
	unsigned long first_page_group_start;
	void __iomem *db_base;
	unsigned long db_len;
	unsigned long pci_len0;

	u8 cut_through;
	int qdr_sn_window;
	int ddr_mn_window;
	unsigned long mn_win_crb;
	unsigned long ms_win_crb;

	u8 revision_id;
	u16 board_type;
	struct netxen_board_info boardcfg;
	u32 linkup;
	/* Address of cmd ring in Phantom */
	struct cmd_desc_type0 *cmd_desc_head;
	dma_addr_t cmd_desc_phys_addr;
	struct netxen_adapter *adapter;
	int pci_func;
};

#define RCV_RING_LRO	RCV_DESC_LRO

#define MINIMUM_ETHERNET_FRAME_SIZE	64	/* With FCS */
#define ETHERNET_FCS_SIZE		4

struct netxen_adapter_stats {
	u64  rcvdbadskb;
	u64  xmitcalled;
	u64  xmitedframes;
	u64  xmitfinished;
	u64  badskblen;
	u64  nocmddescriptor;
	u64  polled;
	u64  rxdropped;
	u64  txdropped;
	u64  csummed;
	u64  no_rcv;
	u64  rxbytes;
	u64  txbytes;
	u64  ints;
};

/*
 * Rcv Descriptor Context. One such per Rcv Descriptor. There may
 * be one Rcv Descriptor for normal packets, one for jumbo and may be others.
 */
struct nx_host_rds_ring {
	u32 flags;
	u32 producer;
	dma_addr_t phys_addr;
	u32 crb_rcv_producer;	/* reg offset */
	struct rcv_desc *desc_head;	/* address of rx ring in Phantom */
	u32 max_rx_desc_count;
	u32 dma_size;
	u32 skb_size;
	struct netxen_rx_buffer *rx_buf_arr;	/* rx buffers for receive   */
	struct list_head free_list;
	int begin_alloc;
};

/*
 * Receive context. There is one such structure per instance of the
 * receive processing. Any state information that is relevant to
 * the receive, and is must be in this structure. The global data may be
 * present elsewhere.
 */
struct netxen_recv_context {
	u32 state;
	u16 context_id;
	u16 virt_port;

	struct nx_host_rds_ring rds_rings[NUM_RCV_DESC_RINGS];
	u32 status_rx_consumer;
	u32 crb_sts_consumer;	/* reg offset */
	dma_addr_t rcv_status_desc_phys_addr;
	struct status_desc *rcv_status_desc_head;
};

/* New HW context creation */

#define NX_OS_CRB_RETRY_COUNT	4000
#define NX_CDRP_SIGNATURE_MAKE(pcifn, version) \
	(((pcifn) & 0xff) | (((version) & 0xff) << 8) | (0xcafe << 16))

#define NX_CDRP_CLEAR		0x00000000
#define NX_CDRP_CMD_BIT		0x80000000

/*
 * All responses must have the NX_CDRP_CMD_BIT cleared
 * in the crb NX_CDRP_CRB_OFFSET.
 */
#define NX_CDRP_FORM_RSP(rsp)	(rsp)
#define NX_CDRP_IS_RSP(rsp)	(((rsp) & NX_CDRP_CMD_BIT) == 0)

#define NX_CDRP_RSP_OK		0x00000001
#define NX_CDRP_RSP_FAIL	0x00000002
#define NX_CDRP_RSP_TIMEOUT	0x00000003

/*
 * All commands must have the NX_CDRP_CMD_BIT set in
 * the crb NX_CDRP_CRB_OFFSET.
 */
#define NX_CDRP_FORM_CMD(cmd)	(NX_CDRP_CMD_BIT | (cmd))
#define NX_CDRP_IS_CMD(cmd)	(((cmd) & NX_CDRP_CMD_BIT) != 0)

#define NX_CDRP_CMD_SUBMIT_CAPABILITIES     0x00000001
#define NX_CDRP_CMD_READ_MAX_RDS_PER_CTX    0x00000002
#define NX_CDRP_CMD_READ_MAX_SDS_PER_CTX    0x00000003
#define NX_CDRP_CMD_READ_MAX_RULES_PER_CTX  0x00000004
#define NX_CDRP_CMD_READ_MAX_RX_CTX         0x00000005
#define NX_CDRP_CMD_READ_MAX_TX_CTX         0x00000006
#define NX_CDRP_CMD_CREATE_RX_CTX           0x00000007
#define NX_CDRP_CMD_DESTROY_RX_CTX          0x00000008
#define NX_CDRP_CMD_CREATE_TX_CTX           0x00000009
#define NX_CDRP_CMD_DESTROY_TX_CTX          0x0000000a
#define NX_CDRP_CMD_SETUP_STATISTICS        0x0000000e
#define NX_CDRP_CMD_GET_STATISTICS          0x0000000f
#define NX_CDRP_CMD_DELETE_STATISTICS       0x00000010
#define NX_CDRP_CMD_SET_MTU                 0x00000012
#define NX_CDRP_CMD_MAX                     0x00000013

#define NX_RCODE_SUCCESS		0
#define NX_RCODE_NO_HOST_MEM		1
#define NX_RCODE_NO_HOST_RESOURCE	2
#define NX_RCODE_NO_CARD_CRB		3
#define NX_RCODE_NO_CARD_MEM		4
#define NX_RCODE_NO_CARD_RESOURCE	5
#define NX_RCODE_INVALID_ARGS		6
#define NX_RCODE_INVALID_ACTION		7
#define NX_RCODE_INVALID_STATE		8
#define NX_RCODE_NOT_SUPPORTED		9
#define NX_RCODE_NOT_PERMITTED		10
#define NX_RCODE_NOT_READY		11
#define NX_RCODE_DOES_NOT_EXIST		12
#define NX_RCODE_ALREADY_EXISTS		13
#define NX_RCODE_BAD_SIGNATURE		14
#define NX_RCODE_CMD_NOT_IMPL		15
#define NX_RCODE_CMD_INVALID		16
#define NX_RCODE_TIMEOUT		17
#define NX_RCODE_CMD_FAILED		18
#define NX_RCODE_MAX_EXCEEDED		19
#define NX_RCODE_MAX			20

#define NX_DESTROY_CTX_RESET		0
#define NX_DESTROY_CTX_D3_RESET		1
#define NX_DESTROY_CTX_MAX		2

/*
 * Capabilities
 */
#define NX_CAP_BIT(class, bit)		(1 << bit)
#define NX_CAP0_LEGACY_CONTEXT		NX_CAP_BIT(0, 0)
#define NX_CAP0_MULTI_CONTEXT		NX_CAP_BIT(0, 1)
#define NX_CAP0_LEGACY_MN		NX_CAP_BIT(0, 2)
#define NX_CAP0_LEGACY_MS		NX_CAP_BIT(0, 3)
#define NX_CAP0_CUT_THROUGH		NX_CAP_BIT(0, 4)
#define NX_CAP0_LRO			NX_CAP_BIT(0, 5)
#define NX_CAP0_LSO			NX_CAP_BIT(0, 6)
#define NX_CAP0_JUMBO_CONTIGUOUS	NX_CAP_BIT(0, 7)
#define NX_CAP0_LRO_CONTIGUOUS		NX_CAP_BIT(0, 8)

/*
 * Context state
 */
#define NX_HOST_CTX_STATE_FREED		0
#define NX_HOST_CTX_STATE_ALLOCATED	1
#define NX_HOST_CTX_STATE_ACTIVE	2
#define NX_HOST_CTX_STATE_DISABLED	3
#define NX_HOST_CTX_STATE_QUIESCED	4
#define NX_HOST_CTX_STATE_MAX		5

/*
 * Rx context
 */

typedef struct {
	u64 host_phys_addr;	/* Ring base addr */
	u32 ring_size;		/* Ring entries */
	u16 msi_index;
	u16 rsvd;		/* Padding */
} nx_hostrq_sds_ring_t;

typedef struct {
	u64 host_phys_addr;	/* Ring base addr */
	u64 buff_size;		/* Packet buffer size */
	u32 ring_size;		/* Ring entries */
	u32 ring_kind;		/* Class of ring */
} nx_hostrq_rds_ring_t;

typedef struct {
	u64 host_rsp_dma_addr;	/* Response dma'd here */
	u32 capabilities[4];	/* Flag bit vector */
	u32 host_int_crb_mode;	/* Interrupt crb usage */
	u32 host_rds_crb_mode;	/* RDS crb usage */
	/* These ring offsets are relative to data[0] below */
	u32 rds_ring_offset;	/* Offset to RDS config */
	u32 sds_ring_offset;	/* Offset to SDS config */
	u16 num_rds_rings;	/* Count of RDS rings */
	u16 num_sds_rings;	/* Count of SDS rings */
	u16 rsvd1;		/* Padding */
	u16 rsvd2;		/* Padding */
	u8  reserved[128]; 	/* reserve space for future expansion*/
	/* MUST BE 64-bit aligned.
	   The following is packed:
	   - N hostrq_rds_rings
	   - N hostrq_sds_rings */
	char data[0];
} nx_hostrq_rx_ctx_t;

typedef struct {
	u32 host_producer_crb;	/* Crb to use */
	u32 rsvd1;		/* Padding */
} nx_cardrsp_rds_ring_t;

typedef struct {
	u32 host_consumer_crb;	/* Crb to use */
	u32 interrupt_crb;	/* Crb to use */
} nx_cardrsp_sds_ring_t;

typedef struct {
	/* These ring offsets are relative to data[0] below */
	u32 rds_ring_offset;	/* Offset to RDS config */
	u32 sds_ring_offset;	/* Offset to SDS config */
	u32 host_ctx_state;	/* Starting State */
	u32 num_fn_per_port;	/* How many PCI fn share the port */
	u16 num_rds_rings;	/* Count of RDS rings */
	u16 num_sds_rings;	/* Count of SDS rings */
	u16 context_id;		/* Handle for context */
	u8  phys_port;		/* Physical id of port */
	u8  virt_port;		/* Virtual/Logical id of port */
	u8  reserved[128];	/* save space for future expansion */
	/*  MUST BE 64-bit aligned.
	   The following is packed:
	   - N cardrsp_rds_rings
	   - N cardrs_sds_rings */
	char data[0];
} nx_cardrsp_rx_ctx_t;

#define SIZEOF_HOSTRQ_RX(HOSTRQ_RX, rds_rings, sds_rings)	\
	(sizeof(HOSTRQ_RX) + 					\
	(rds_rings)*(sizeof(nx_hostrq_rds_ring_t)) +		\
	(sds_rings)*(sizeof(nx_hostrq_sds_ring_t)))

#define SIZEOF_CARDRSP_RX(CARDRSP_RX, rds_rings, sds_rings) 	\
	(sizeof(CARDRSP_RX) + 					\
	(rds_rings)*(sizeof(nx_cardrsp_rds_ring_t)) + 		\
	(sds_rings)*(sizeof(nx_cardrsp_sds_ring_t)))

/*
 * Tx context
 */

typedef struct {
	u64 host_phys_addr;	/* Ring base addr */
	u32 ring_size;		/* Ring entries */
	u32 rsvd;		/* Padding */
} nx_hostrq_cds_ring_t;

typedef struct {
	u64 host_rsp_dma_addr;	/* Response dma'd here */
	u64 cmd_cons_dma_addr;	/*  */
	u64 dummy_dma_addr;	/*  */
	u32 capabilities[4];	/* Flag bit vector */
	u32 host_int_crb_mode;	/* Interrupt crb usage */
	u32 rsvd1;		/* Padding */
	u16 rsvd2;		/* Padding */
	u16 interrupt_ctl;
	u16 msi_index;
	u16 rsvd3;		/* Padding */
	nx_hostrq_cds_ring_t cds_ring;	/* Desc of cds ring */
	u8  reserved[128];	/* future expansion */
} nx_hostrq_tx_ctx_t;

typedef struct {
	u32 host_producer_crb;	/* Crb to use */
	u32 interrupt_crb;	/* Crb to use */
} nx_cardrsp_cds_ring_t;

typedef struct {
	u32 host_ctx_state;	/* Starting state */
	u16 context_id;		/* Handle for context */
	u8  phys_port;		/* Physical id of port */
	u8  virt_port;		/* Virtual/Logical id of port */
	nx_cardrsp_cds_ring_t cds_ring;	/* Card cds settings */
	u8  reserved[128];	/* future expansion */
} nx_cardrsp_tx_ctx_t;

#define SIZEOF_HOSTRQ_TX(HOSTRQ_TX)	(sizeof(HOSTRQ_TX))
#define SIZEOF_CARDRSP_TX(CARDRSP_TX)	(sizeof(CARDRSP_TX))

/* CRB */

#define NX_HOST_RDS_CRB_MODE_UNIQUE	0
#define NX_HOST_RDS_CRB_MODE_SHARED	1
#define NX_HOST_RDS_CRB_MODE_CUSTOM	2
#define NX_HOST_RDS_CRB_MODE_MAX	3

#define NX_HOST_INT_CRB_MODE_UNIQUE	0
#define NX_HOST_INT_CRB_MODE_SHARED	1
#define NX_HOST_INT_CRB_MODE_NORX	2
#define NX_HOST_INT_CRB_MODE_NOTX	3
#define NX_HOST_INT_CRB_MODE_NORXTX	4


/* MAC */

#define MC_COUNT_P2	16
#define MC_COUNT_P3	38

#define NETXEN_MAC_NOOP	0
#define NETXEN_MAC_ADD	1
#define NETXEN_MAC_DEL	2

typedef struct nx_mac_list_s {
	struct nx_mac_list_s *next;
	uint8_t mac_addr[MAX_ADDR_LEN];
} nx_mac_list_t;

/*
 * Interrupt coalescing defaults. The defaults are for 1500 MTU. It is
 * adjusted based on configured MTU.
 */
#define NETXEN_DEFAULT_INTR_COALESCE_RX_TIME_US	3
#define NETXEN_DEFAULT_INTR_COALESCE_RX_PACKETS	256
#define NETXEN_DEFAULT_INTR_COALESCE_TX_PACKETS	64
#define NETXEN_DEFAULT_INTR_COALESCE_TX_TIME_US	4

#define NETXEN_NIC_INTR_DEFAULT			0x04

typedef union {
	struct {
		uint16_t	rx_packets;
		uint16_t	rx_time_us;
		uint16_t	tx_packets;
		uint16_t	tx_time_us;
	} data;
	uint64_t		word;
} nx_nic_intr_coalesce_data_t;

typedef struct {
	uint16_t			stats_time_us;
	uint16_t			rate_sample_time;
	uint16_t			flags;
	uint16_t			rsvd_1;
	uint32_t			low_threshold;
	uint32_t			high_threshold;
	nx_nic_intr_coalesce_data_t	normal;
	nx_nic_intr_coalesce_data_t	low;
	nx_nic_intr_coalesce_data_t	high;
	nx_nic_intr_coalesce_data_t	irq;
} nx_nic_intr_coalesce_t;

typedef struct {
	u64 qhdr;
	u64 req_hdr;
	u64 words[6];
} nx_nic_req_t;

typedef struct {
	u8 op;
	u8 tag;
	u8 mac_addr[6];
} nx_mac_req_t;

#define MAX_PENDING_DESC_BLOCK_SIZE	64

#define NETXEN_NIC_MSI_ENABLED		0x02
#define NETXEN_NIC_MSIX_ENABLED		0x04
#define NETXEN_IS_MSI_FAMILY(adapter) \
	((adapter)->flags & (NETXEN_NIC_MSI_ENABLED | NETXEN_NIC_MSIX_ENABLED))

#define MSIX_ENTRIES_PER_ADAPTER	8
#define NETXEN_MSIX_TBL_SPACE		8192
#define NETXEN_PCI_REG_MSIX_TBL		0x44

#define NETXEN_DB_MAPSIZE_BYTES    	0x1000

#define NETXEN_NETDEV_WEIGHT 120
#define NETXEN_ADAPTER_UP_MAGIC 777
#define NETXEN_NIC_PEG_TUNE 0

struct netxen_dummy_dma {
	void *addr;
	dma_addr_t phys_addr;
};

struct netxen_adapter {
	struct netxen_hardware_context ahw;

	struct net_device *netdev;
	struct pci_dev *pdev;
	int pci_using_dac;
	struct napi_struct napi;
	struct net_device_stats net_stats;
	int mtu;
	int portnum;
	u8 physical_port;
	u16 tx_context_id;

	uint8_t		mc_enabled;
	uint8_t		max_mc_count;
	nx_mac_list_t	*mac_list;

	struct netxen_legacy_intr_set legacy_intr;
	u32	crb_intr_mask;

	struct work_struct watchdog_task;
	struct timer_list watchdog_timer;
	struct work_struct  tx_timeout_task;

	u32 curr_window;
	u32 crb_win;
	rwlock_t adapter_lock;

	uint64_t dma_mask;

	u32 cmd_producer;
	__le32 *cmd_consumer;
	u32 last_cmd_consumer;
	u32 crb_addr_cmd_producer;
	u32 crb_addr_cmd_consumer;

	u32 max_tx_desc_count;
	u32 max_rx_desc_count;
	u32 max_jumbo_rx_desc_count;
	u32 max_lro_rx_desc_count;

	int max_rds_rings;

	u32 flags;
	u32 irq;
	int driver_mismatch;
	u32 temp;

	u32 fw_major;

	u8 msix_supported;
	u8 max_possible_rss_rings;
	struct msix_entry msix_entries[MSIX_ENTRIES_PER_ADAPTER];

	struct netxen_adapter_stats stats;

	u16 link_speed;
	u16 link_duplex;
	u16 state;
	u16 link_autoneg;
	int rx_csum;
	int status;

	struct netxen_cmd_buffer *cmd_buf_arr;	/* Command buffers for xmit */

	/*
	 * Receive instances. These can be either one per port,
	 * or one per peg, etc.
	 */
	struct netxen_recv_context recv_ctx[MAX_RCV_CTX];

	int is_up;
	struct netxen_dummy_dma dummy_dma;
	nx_nic_intr_coalesce_t coal;

	/* Context interface shared between card and host */
	struct netxen_ring_ctx *ctx_desc;
	dma_addr_t ctx_desc_phys_addr;
	int intr_scheme;
	int msi_mode;
	int (*enable_phy_interrupts) (struct netxen_adapter *);
	int (*disable_phy_interrupts) (struct netxen_adapter *);
	int (*macaddr_set) (struct netxen_adapter *, netxen_ethernet_macaddr_t);
	int (*set_mtu) (struct netxen_adapter *, int);
	int (*set_promisc) (struct netxen_adapter *, netxen_niu_prom_mode_t);
	int (*phy_read) (struct netxen_adapter *, long reg, u32 *);
	int (*phy_write) (struct netxen_adapter *, long reg, u32 val);
	int (*init_port) (struct netxen_adapter *, int);
	int (*stop_port) (struct netxen_adapter *);

	int (*hw_read_wx)(struct netxen_adapter *, ulong, void *, int);
	int (*hw_write_wx)(struct netxen_adapter *, ulong, void *, int);
	int (*pci_mem_read)(struct netxen_adapter *, u64, void *, int);
	int (*pci_mem_write)(struct netxen_adapter *, u64, void *, int);
	int (*pci_write_immediate)(struct netxen_adapter *, u64, u32);
	u32 (*pci_read_immediate)(struct netxen_adapter *, u64);
	void (*pci_write_normalize)(struct netxen_adapter *, u64, u32);
	u32 (*pci_read_normalize)(struct netxen_adapter *, u64);
	unsigned long (*pci_set_window)(struct netxen_adapter *,
			unsigned long long);
};				/* netxen_adapter structure */

/*
 * NetXen dma watchdog control structure
 *
 *	Bit 0		: enabled => R/O: 1 watchdog active, 0 inactive
 *	Bit 1		: disable_request => 1 req disable dma watchdog
 *	Bit 2		: enable_request =>  1 req enable dma watchdog
 *	Bit 3-31	: unused
 */

#define netxen_set_dma_watchdog_disable_req(config_word) \
	_netxen_set_bits(config_word, 1, 1, 1)
#define netxen_set_dma_watchdog_enable_req(config_word) \
	_netxen_set_bits(config_word, 2, 1, 1)
#define netxen_get_dma_watchdog_enabled(config_word) \
	((config_word) & 0x1)
#define netxen_get_dma_watchdog_disabled(config_word) \
	(((config_word) >> 1) & 0x1)

/* Max number of xmit producer threads that can run simultaneously */
#define	MAX_XMIT_PRODUCERS		16

#define PCI_OFFSET_FIRST_RANGE(adapter, off)    \
	((adapter)->ahw.pci_base0 + (off))
#define PCI_OFFSET_SECOND_RANGE(adapter, off)   \
	((adapter)->ahw.pci_base1 + (off) - SECOND_PAGE_GROUP_START)
#define PCI_OFFSET_THIRD_RANGE(adapter, off)    \
	((adapter)->ahw.pci_base2 + (off) - THIRD_PAGE_GROUP_START)

static inline void __iomem *pci_base_offset(struct netxen_adapter *adapter,
					    unsigned long off)
{
	if ((off < FIRST_PAGE_GROUP_END) && (off >= FIRST_PAGE_GROUP_START)) {
		return (adapter->ahw.pci_base0 + off);
	} else if ((off < SECOND_PAGE_GROUP_END) &&
		   (off >= SECOND_PAGE_GROUP_START)) {
		return (adapter->ahw.pci_base1 + off - SECOND_PAGE_GROUP_START);
	} else if ((off < THIRD_PAGE_GROUP_END) &&
		   (off >= THIRD_PAGE_GROUP_START)) {
		return (adapter->ahw.pci_base2 + off - THIRD_PAGE_GROUP_START);
	}
	return NULL;
}

static inline void __iomem *pci_base(struct netxen_adapter *adapter,
				     unsigned long off)
{
	if ((off < FIRST_PAGE_GROUP_END) && (off >= FIRST_PAGE_GROUP_START)) {
		return adapter->ahw.pci_base0;
	} else if ((off < SECOND_PAGE_GROUP_END) &&
		   (off >= SECOND_PAGE_GROUP_START)) {
		return adapter->ahw.pci_base1;
	} else if ((off < THIRD_PAGE_GROUP_END) &&
		   (off >= THIRD_PAGE_GROUP_START)) {
		return adapter->ahw.pci_base2;
	}
	return NULL;
}

int netxen_niu_xgbe_enable_phy_interrupts(struct netxen_adapter *adapter);
int netxen_niu_gbe_enable_phy_interrupts(struct netxen_adapter *adapter);
int netxen_niu_xgbe_disable_phy_interrupts(struct netxen_adapter *adapter);
int netxen_niu_gbe_disable_phy_interrupts(struct netxen_adapter *adapter);
int netxen_niu_gbe_phy_read(struct netxen_adapter *adapter, long reg,
			    __u32 * readval);
int netxen_niu_gbe_phy_write(struct netxen_adapter *adapter,
			     long reg, __u32 val);

/* Functions available from netxen_nic_hw.c */
int netxen_nic_set_mtu_xgb(struct netxen_adapter *adapter, int new_mtu);
int netxen_nic_set_mtu_gb(struct netxen_adapter *adapter, int new_mtu);
void netxen_nic_reg_write(struct netxen_adapter *adapter, u64 off, u32 val);
int netxen_nic_reg_read(struct netxen_adapter *adapter, u64 off);
void netxen_nic_write_w0(struct netxen_adapter *adapter, u32 index, u32 value);
void netxen_nic_read_w0(struct netxen_adapter *adapter, u32 index, u32 *value);
void netxen_nic_write_w1(struct netxen_adapter *adapter, u32 index, u32 value);
void netxen_nic_read_w1(struct netxen_adapter *adapter, u32 index, u32 *value);

int netxen_nic_get_board_info(struct netxen_adapter *adapter);

int netxen_nic_hw_read_wx_128M(struct netxen_adapter *adapter,
		ulong off, void *data, int len);
int netxen_nic_hw_write_wx_128M(struct netxen_adapter *adapter,
		ulong off, void *data, int len);
int netxen_nic_pci_mem_read_128M(struct netxen_adapter *adapter,
		u64 off, void *data, int size);
int netxen_nic_pci_mem_write_128M(struct netxen_adapter *adapter,
		u64 off, void *data, int size);
int netxen_nic_pci_write_immediate_128M(struct netxen_adapter *adapter,
		u64 off, u32 data);
u32 netxen_nic_pci_read_immediate_128M(struct netxen_adapter *adapter, u64 off);
void netxen_nic_pci_write_normalize_128M(struct netxen_adapter *adapter,
		u64 off, u32 data);
u32 netxen_nic_pci_read_normalize_128M(struct netxen_adapter *adapter, u64 off);
unsigned long netxen_nic_pci_set_window_128M(struct netxen_adapter *adapter,
		unsigned long long addr);
void netxen_nic_pci_change_crbwindow_128M(struct netxen_adapter *adapter,
		u32 wndw);

int netxen_nic_hw_read_wx_2M(struct netxen_adapter *adapter,
		ulong off, void *data, int len);
int netxen_nic_hw_write_wx_2M(struct netxen_adapter *adapter,
		ulong off, void *data, int len);
int netxen_nic_pci_mem_read_2M(struct netxen_adapter *adapter,
		u64 off, void *data, int size);
int netxen_nic_pci_mem_write_2M(struct netxen_adapter *adapter,
		u64 off, void *data, int size);
void netxen_crb_writelit_adapter(struct netxen_adapter *adapter,
				 unsigned long off, int data);
int netxen_nic_pci_write_immediate_2M(struct netxen_adapter *adapter,
		u64 off, u32 data);
u32 netxen_nic_pci_read_immediate_2M(struct netxen_adapter *adapter, u64 off);
void netxen_nic_pci_write_normalize_2M(struct netxen_adapter *adapter,
		u64 off, u32 data);
u32 netxen_nic_pci_read_normalize_2M(struct netxen_adapter *adapter, u64 off);
unsigned long netxen_nic_pci_set_window_2M(struct netxen_adapter *adapter,
		unsigned long long addr);

/* Functions from netxen_nic_init.c */
void netxen_free_adapter_offload(struct netxen_adapter *adapter);
int netxen_initialize_adapter_offload(struct netxen_adapter *adapter);
int netxen_phantom_init(struct netxen_adapter *adapter, int pegtune_val);
int netxen_receive_peg_ready(struct netxen_adapter *adapter);
int netxen_load_firmware(struct netxen_adapter *adapter);
int netxen_pinit_from_rom(struct netxen_adapter *adapter, int verbose);

int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr, int *valp);
int netxen_rom_fast_read_words(struct netxen_adapter *adapter, int addr,
				u8 *bytes, size_t size);
int netxen_rom_fast_write_words(struct netxen_adapter *adapter, int addr,
				u8 *bytes, size_t size);
int netxen_flash_unlock(struct netxen_adapter *adapter);
int netxen_backup_crbinit(struct netxen_adapter *adapter);
int netxen_flash_erase_secondary(struct netxen_adapter *adapter);
int netxen_flash_erase_primary(struct netxen_adapter *adapter);
void netxen_halt_pegs(struct netxen_adapter *adapter);

int netxen_rom_se(struct netxen_adapter *adapter, int addr);

int netxen_alloc_sw_resources(struct netxen_adapter *adapter);
void netxen_free_sw_resources(struct netxen_adapter *adapter);

int netxen_alloc_hw_resources(struct netxen_adapter *adapter);
void netxen_free_hw_resources(struct netxen_adapter *adapter);

void netxen_release_rx_buffers(struct netxen_adapter *adapter);
void netxen_release_tx_buffers(struct netxen_adapter *adapter);

void netxen_initialize_adapter_ops(struct netxen_adapter *adapter);
int netxen_init_firmware(struct netxen_adapter *adapter);
void netxen_tso_check(struct netxen_adapter *adapter,
		      struct cmd_desc_type0 *desc, struct sk_buff *skb);
void netxen_nic_clear_stats(struct netxen_adapter *adapter);
void netxen_watchdog_task(struct work_struct *work);
void netxen_post_rx_buffers(struct netxen_adapter *adapter, u32 ctx,
			    u32 ringid);
int netxen_process_cmd_ring(struct netxen_adapter *adapter);
u32 netxen_process_rcv_ring(struct netxen_adapter *adapter, int ctx, int max);
void netxen_p2_nic_set_multi(struct net_device *netdev);
void netxen_p3_nic_set_multi(struct net_device *netdev);
int netxen_config_intr_coalesce(struct netxen_adapter *adapter);

u32 nx_fw_cmd_set_mtu(struct netxen_adapter *adapter, u32 mtu);
int netxen_nic_change_mtu(struct net_device *netdev, int new_mtu);

int netxen_nic_set_mac(struct net_device *netdev, void *p);
struct net_device_stats *netxen_nic_get_stats(struct net_device *netdev);

void netxen_nic_update_cmd_producer(struct netxen_adapter *adapter,
		uint32_t crb_producer);

/*
 * NetXen Board information
 */

#define NETXEN_MAX_SHORT_NAME 32
struct netxen_brdinfo {
	netxen_brdtype_t brdtype;	/* type of board */
	long ports;		/* max no of physical ports */
	char short_name[NETXEN_MAX_SHORT_NAME];
};

static const struct netxen_brdinfo netxen_boards[] = {
	{NETXEN_BRDTYPE_P2_SB31_10G_CX4, 1, "XGb CX4"},
	{NETXEN_BRDTYPE_P2_SB31_10G_HMEZ, 1, "XGb HMEZ"},
	{NETXEN_BRDTYPE_P2_SB31_10G_IMEZ, 2, "XGb IMEZ"},
	{NETXEN_BRDTYPE_P2_SB31_10G, 1, "XGb XFP"},
	{NETXEN_BRDTYPE_P2_SB35_4G, 4, "Quad Gb"},
	{NETXEN_BRDTYPE_P2_SB31_2G, 2, "Dual Gb"},
	{NETXEN_BRDTYPE_P3_REF_QG,  4, "Reference Quad Gig "},
	{NETXEN_BRDTYPE_P3_HMEZ,    2, "Dual XGb HMEZ"},
	{NETXEN_BRDTYPE_P3_10G_CX4_LP,   2, "Dual XGb CX4 LP"},
	{NETXEN_BRDTYPE_P3_4_GB,    4, "Quad Gig LP"},
	{NETXEN_BRDTYPE_P3_IMEZ,    2, "Dual XGb IMEZ"},
	{NETXEN_BRDTYPE_P3_10G_SFP_PLUS, 2, "Dual XGb SFP+ LP"},
	{NETXEN_BRDTYPE_P3_10000_BASE_T, 1, "XGB 10G BaseT LP"},
	{NETXEN_BRDTYPE_P3_XG_LOM,  2, "Dual XGb LOM"},
	{NETXEN_BRDTYPE_P3_4_GB_MM, 4, "NX3031 Gigabit Ethernet"},
	{NETXEN_BRDTYPE_P3_10G_SFP_CT, 2, "NX3031 10 Gigabit Ethernet"},
	{NETXEN_BRDTYPE_P3_10G_SFP_QT, 2, "Quanta Dual XGb SFP+"},
	{NETXEN_BRDTYPE_P3_10G_CX4, 2, "Reference Dual CX4 Option"},
	{NETXEN_BRDTYPE_P3_10G_XFP, 1, "Reference Single XFP Option"}
};

#define NUM_SUPPORTED_BOARDS ARRAY_SIZE(netxen_boards)

static inline void get_brd_name_by_type(u32 type, char *name)
{
	int i, found = 0;
	for (i = 0; i < NUM_SUPPORTED_BOARDS; ++i) {
		if (netxen_boards[i].brdtype == type) {
			strcpy(name, netxen_boards[i].short_name);
			found = 1;
			break;
		}

	}
	if (!found)
		name = "Unknown";
}

static inline int
dma_watchdog_shutdown_request(struct netxen_adapter *adapter)
{
	u32 ctrl;

	/* check if already inactive */
	if (adapter->hw_read_wx(adapter,
	    NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL), &ctrl, 4))
		printk(KERN_ERR "failed to read dma watchdog status\n");

	if (netxen_get_dma_watchdog_enabled(ctrl) == 0)
		return 1;

	/* Send the disable request */
	netxen_set_dma_watchdog_disable_req(ctrl);
	netxen_crb_writelit_adapter(adapter,
		NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL), ctrl);

	return 0;
}

static inline int
dma_watchdog_shutdown_poll_result(struct netxen_adapter *adapter)
{
	u32 ctrl;

	if (adapter->hw_read_wx(adapter,
	    NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL), &ctrl, 4))
		printk(KERN_ERR "failed to read dma watchdog status\n");

	return (netxen_get_dma_watchdog_enabled(ctrl) == 0);
}

static inline int
dma_watchdog_wakeup(struct netxen_adapter *adapter)
{
	u32 ctrl;

	if (adapter->hw_read_wx(adapter,
		NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL), &ctrl, 4))
		printk(KERN_ERR "failed to read dma watchdog status\n");

	if (netxen_get_dma_watchdog_enabled(ctrl))
		return 1;

	/* send the wakeup request */
	netxen_set_dma_watchdog_enable_req(ctrl);

	netxen_crb_writelit_adapter(adapter,
		NETXEN_CAM_RAM(NETXEN_CAM_RAM_DMA_WATCHDOG_CTRL), ctrl);

	return 0;
}


int netxen_is_flash_supported(struct netxen_adapter *adapter);
int netxen_get_flash_mac_addr(struct netxen_adapter *adapter, __le64 mac[]);
extern void netxen_change_ringparam(struct netxen_adapter *adapter);
extern int netxen_rom_fast_read(struct netxen_adapter *adapter, int addr,
				int *valp);

extern struct ethtool_ops netxen_nic_ethtool_ops;

#endif				/* __NETXEN_NIC_H_ */