/*
################################################################################
# 
# r8168 is the Linux device driver released for RealTek RTL8168B/8111B, 
# RTL8168C/8111C, RTL8168CP/8111CP, RTL8168D/8111D, and RTL8168DP/8111DP
# Gigabit Ethernet controllers with PCI-Express interface.
# 
# Copyright(c) 2009 Realtek Semiconductor Corp. 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, see <http://www.gnu.org/licenses/>.
# 
# Author:
# Realtek NIC software team <nicfae@realtek.com>
# No. 2, Innovation Road II, Hsinchu Science Park, Hsinchu 300, Taiwan
# 
################################################################################
*/

/*
 * This product is covered by one or more of the following patents:
 * US5,307,459, US5,434,872, US5,732,094, US6,570,884, US6,115,776, and US6,327,625.
 */

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
#define CHECKSUM_PARTIAL CHECKSUM_HW
#endif

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 #define irqreturn_t void
 #define IRQ_HANDLED	1
 #define IRQ_NONE	0
 #define IRQ_RETVAL(x)	
#endif

#ifndef HAVE_FREE_NETDEV
#define free_netdev(x)	kfree(x)
#endif

#ifndef SET_NETDEV_DEV
#define SET_NETDEV_DEV(net, pdev)
#endif

#ifndef SET_MODULE_OWNER
#define SET_MODULE_OWNER(dev)
#endif

#ifndef SA_SHIRQ
#define SA_SHIRQ IRQF_SHARED
#endif

#ifndef NETIF_F_GSO
#define gso_size	tso_size
#define gso_segs	tso_segs
#endif

//Due to the hardware design of RTL8111B, the low 32 bit address of receive
//buffer must be 8-byte alignment.
#undef NET_IP_ALIGN
#define NET_IP_ALIGN 8

#ifdef CONFIG_R8168_NAPI
#define NAPI_SUFFIX	"-NAPI"
#else
#define NAPI_SUFFIX	""
#endif

#define RTL8168_VERSION "8.013.00" NAPI_SUFFIX
#define MODULENAME "r8168"
#define PFX MODULENAME ": "

#define GPL_CLAIM "\
r8168  Copyright (C) 2009  Realtek NIC software team <nicfae@realtek.com> \n \
This program comes with ABSOLUTELY NO WARRANTY; for details, please see <http://www.gnu.org/licenses/>. \n \
This is free software, and you are welcome to redistribute it under certain conditions; see <http://www.gnu.org/licenses/>. \n"

#ifdef RTL8168_DEBUG
#define assert(expr) \
        if(!(expr)) {					\
	        printk( "Assertion failed! %s,%s,%s,line=%d\n",	\
        	#expr,__FILE__,__FUNCTION__,__LINE__);		\
        }
#define dprintk(fmt, args...)	do { printk(PFX fmt, ## args); } while (0)
#else
#define assert(expr) do {} while (0)
#define dprintk(fmt, args...)	do {} while (0)
#endif /* RTL8168_DEBUG */

#define R8168_MSG_DEFAULT \
	(NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)

#define TX_BUFFS_AVAIL(tp) \
	(tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)

#ifdef CONFIG_R8168_NAPI
#define rtl8168_rx_skb			netif_receive_skb
#define rtl8168_rx_hwaccel_skb		vlan_hwaccel_receive_skb
#define rtl8168_rx_quota(count, quota)	min(count, quota)
#else
#define rtl8168_rx_skb			netif_rx
#define rtl8168_rx_hwaccel_skb		vlan_hwaccel_rx
#define rtl8168_rx_quota(count, quota)	count
#endif

/* MAC address length */
#ifndef MAC_ADDR_LEN
#define MAC_ADDR_LEN	6
#endif

#ifndef MAC_PROTOCOL_LEN
#define MAC_PROTOCOL_LEN	2
#endif

#define Reserved2_data	7
#define RX_DMA_BURST	7	/* Maximum PCI burst, '6' is 1024 */
#define TX_DMA_BURST_unlimited	7
#define TX_DMA_BURST_1024	6
#define TX_DMA_BURST_512	5
#define TX_DMA_BURST_256	4
#define TX_DMA_BURST_128	3
#define TX_DMA_BURST_64		2
#define TX_DMA_BURST_32		1
#define TX_DMA_BURST_16		0
#define Reserved1_data 	0x3F
#define RxPacketMaxSize	0x3FE8	/* 16K - 1 - ETH_HLEN - VLAN - CRC... */
#define Jumbo_Frame_2k	(2 * 1024)
#define Jumbo_Frame_3k	(3 * 1024)
#define Jumbo_Frame_4k	(4 * 1024)
#define Jumbo_Frame_5k	(5 * 1024)
#define Jumbo_Frame_6k	(6 * 1024)
#define Jumbo_Frame_7k	(7 * 1024)
#define Jumbo_Frame_8k	(8 * 1024)
#define Jumbo_Frame_9k	(9 * 1024)
#define InterFrameGap	0x03	/* 3 means InterFrameGap = the shortest one */

#define R8168_REGS_SIZE		256
#define R8168_NAPI_WEIGHT	64

#define RX_BUF_SIZE	0x05F3	/* 0x05F3 = 1522bye + 1 */
#define R8168_TX_RING_BYTES	(NUM_TX_DESC * sizeof(struct TxDesc))
#define R8168_RX_RING_BYTES	(NUM_RX_DESC * sizeof(struct RxDesc))

#define RTL8168_TX_TIMEOUT	(6 * HZ)
#define RTL8168_LINK_TIMEOUT	(1 * HZ)
#define RTL8168_ESD_TIMEOUT	(2 * HZ)

#define NUM_TX_DESC	1024	/* Number of Tx descriptor registers */
#define NUM_RX_DESC	1024	/* Number of Rx descriptor registers */

#define NODE_ADDRESS_SIZE 6

/* write/read MMIO register */
#define RTL_W8(reg, val8)	writeb ((val8), ioaddr + (reg))
#define RTL_W16(reg, val16)	writew ((val16), ioaddr + (reg))
#define RTL_W32(reg, val32)	writel ((val32), ioaddr + (reg))
#define RTL_R8(reg)		readb (ioaddr + (reg))
#define RTL_R16(reg)		readw (ioaddr + (reg))
#define RTL_R32(reg)		((unsigned long) readl (ioaddr + (reg)))

#ifndef	DMA_64BIT_MASK
#define DMA_64BIT_MASK	0xffffffffffffffffULL
#endif

#ifndef	DMA_32BIT_MASK
#define DMA_32BIT_MASK	0x00000000ffffffffULL
#endif

#ifndef	NETDEV_TX_OK
#define NETDEV_TX_OK 0		/* driver took care of packet */
#endif

#ifndef	NETDEV_TX_BUSY
#define NETDEV_TX_BUSY 1	/* driver tx path was busy*/
#endif

#ifndef	NETDEV_TX_LOCKED
#define NETDEV_TX_LOCKED -1	/* driver tx lock was already taken */
#endif

#ifndef	ADVERTISED_Pause
#define ADVERTISED_Pause	(1 << 13)
#endif

#ifndef	ADVERTISED_Asym_Pause
#define ADVERTISED_Asym_Pause	(1 << 14)
#endif

#ifndef	ADVERTISE_PAUSE_CAP
#define ADVERTISE_PAUSE_CAP	0x400
#endif

#ifndef	ADVERTISE_PAUSE_ASYM
#define ADVERTISE_PAUSE_ASYM	0x800
#endif

#ifndef	MII_CTRL1000
#define MII_CTRL1000		0x09
#endif

#ifndef	ADVERTISE_1000FULL
#define ADVERTISE_1000FULL	0x200
#endif

#ifndef	ADVERTISE_1000HALF
#define ADVERTISE_1000HALF	0x100
#endif

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

//#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,3)
#if (( LINUX_VERSION_CODE < KERNEL_VERSION(2,4,27) ) || \
     (( LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) ) && \
      ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,3) )))
/* copied from linux kernel 2.6.20 include/linux/netdev.h */
#define	NETDEV_ALIGN		32
#define	NETDEV_ALIGN_CONST	(NETDEV_ALIGN - 1)

static inline void *netdev_priv(struct net_device *dev)
{
	return (char *)dev + ((sizeof(struct net_device)
					+ NETDEV_ALIGN_CONST)
				& ~NETDEV_ALIGN_CONST);
}
#endif	//LINUX_VERSION_CODE < KERNEL_VERSION(2,6,3)

/*****************************************************************************/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
	#define	RTLDEV	tp
#else
	#define	RTLDEV	dev
#endif	//LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
/*****************************************************************************/

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)
	typedef struct net_device *napi_ptr;
	typedef int *napi_budget;

	#define napi dev
	#define RTL_NAPI_CONFIG(ndev, priv, function, weig)	ndev->poll=function;	\
								ndev->weight=weig;
	#define RTL_NAPI_QUOTA(budget, ndev)			min(*budget, ndev->quota)
	#define RTL_GET_PRIV(stuct_ptr, priv_struct)		netdev_priv(stuct_ptr)
	#define RTL_GET_NETDEV(priv_ptr)			
	#define RTL_RX_QUOTA(ndev, budget)			ndev->quota
	#define RTL_NAPI_QUOTA_UPDATE(ndev, work_done, budget)	*budget -= work_done;	\
								ndev->quota -= work_done;
	#define RTL_NETIF_RX_COMPLETE(dev, napi)		netif_rx_complete(dev)
	#define RTL_NETIF_RX_SCHEDULE_PREP(dev, napi)		netif_rx_schedule_prep(dev)
	#define __RTL_NETIF_RX_SCHEDULE(dev, napi)		__netif_rx_schedule(dev)
	#define RTL_NAPI_RETURN_VALUE				work_done >= work_to_do
	#define RTL_NAPI_ENABLE(dev, napi)			netif_poll_enable(dev)
	#define RTL_NAPI_DISABLE(dev, napi)			netif_poll_disable(dev)
#else
	typedef struct napi_struct *napi_ptr;
	typedef int napi_budget;

	#define RTL_NAPI_CONFIG(ndev, priv, function, weight)	netif_napi_add(ndev, &priv->napi, function, weight)
	#define RTL_NAPI_QUOTA(budget, ndev)			min(budget, budget)
	#define RTL_GET_PRIV(stuct_ptr, priv_struct)		container_of(stuct_ptr, priv_struct, stuct_ptr)
	#define RTL_GET_NETDEV(priv_ptr)			struct net_device *dev = priv_ptr->dev;
	#define RTL_RX_QUOTA(ndev, budget)			budget
	#define RTL_NAPI_QUOTA_UPDATE(ndev, work_done, budget)
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)
	#define RTL_NETIF_RX_COMPLETE(dev, napi)		netif_rx_complete(dev, napi)
	#define RTL_NETIF_RX_SCHEDULE_PREP(dev, napi)		netif_rx_schedule_prep(dev, napi)
	#define __RTL_NETIF_RX_SCHEDULE(dev, napi)		__netif_rx_schedule(dev, napi)
 #endif
 #if LINUX_VERSION_CODE == KERNEL_VERSION(2,6,29)
	#define RTL_NETIF_RX_COMPLETE(dev, napi)		netif_rx_complete(napi)
	#define RTL_NETIF_RX_SCHEDULE_PREP(dev, napi)		netif_rx_schedule_prep(napi)
	#define __RTL_NETIF_RX_SCHEDULE(dev, napi)		__netif_rx_schedule(napi)
 #endif
 #if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,29)
	#define RTL_NETIF_RX_COMPLETE(dev, napi)		napi_complete(napi)
	#define RTL_NETIF_RX_SCHEDULE_PREP(dev, napi)		napi_schedule_prep(napi)
	#define __RTL_NETIF_RX_SCHEDULE(dev, napi)		__napi_schedule(napi)
 #endif
	#define RTL_NAPI_RETURN_VALUE work_done
	#define RTL_NAPI_ENABLE(dev, napi)			napi_enable(napi)
	#define RTL_NAPI_DISABLE(dev, napi)			napi_disable(napi)
#endif	//LINUX_VERSION_CODE < KERNEL_VERSION(2,6,24)

/*****************************************************************************/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9)
#ifdef __CHECKER__
#define __iomem	__attribute__((noderef, address_space(2)))
extern void __chk_io_ptr(void __iomem *);
#define __bitwise __attribute__((bitwise))
#else
#define __iomem
#define __chk_io_ptr(x) (void)0
#define __bitwise
#endif
#endif	//LINUX_VERSION_CODE < KERNEL_VERSION(2,6,9)

/*****************************************************************************/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,8)
#ifdef __CHECKER__
#define __force	__attribute__((force))
#else
#define __force
#endif
#endif	//LINUX_VERSION_CODE < KERNEL_VERSION(2,6,8)

#ifndef module_param
#define module_param(v,t,p) MODULE_PARM(v, "i");
#endif

#ifndef PCI_DEVICE
#define PCI_DEVICE(vend,dev) \
	.vendor = (vend), .device = (dev), \
	.subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
#endif

/*****************************************************************************/
/* 2.5.28 => 2.4.23 */
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,5,28) )

static inline void _kc_synchronize_irq(void)
{
	synchronize_irq();
}
#undef synchronize_irq
#define synchronize_irq(X) _kc_synchronize_irq()

#include <linux/tqueue.h>
#define work_struct tq_struct
#undef INIT_WORK
#define INIT_WORK(a,b,c) INIT_TQUEUE(a,(void (*)(void *))b,c)
#undef container_of
#define container_of list_entry
#define schedule_work schedule_task
#define flush_scheduled_work flush_scheduled_tasks
#endif /* 2.5.28 => 2.4.17 */

/*****************************************************************************/
/* 2.6.4 => 2.6.0 */
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4) )
#define MODULE_VERSION(_version) MODULE_INFO(version, _version)
#endif /* 2.6.4 => 2.6.0 */
/*****************************************************************************/
/* 2.6.0 => 2.5.28 */
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) )
#define MODULE_INFO(version, _version)
#ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
#define CONFIG_E1000_DISABLE_PACKET_SPLIT 1
#endif

#define pci_set_consistent_dma_mask(dev,mask) 1

#undef dev_put
#define dev_put(dev) __dev_put(dev)

#ifndef skb_fill_page_desc
#define skb_fill_page_desc _kc_skb_fill_page_desc
extern void _kc_skb_fill_page_desc(struct sk_buff *skb, int i, struct page *page, int off, int size);
#endif

#ifndef pci_dma_mapping_error
#define pci_dma_mapping_error _kc_pci_dma_mapping_error
static inline int _kc_pci_dma_mapping_error(dma_addr_t dma_addr)
{
	return dma_addr == 0;
}
#endif

#undef ALIGN
#define ALIGN(x,a) (((x)+(a)-1)&~((a)-1))

#endif /* 2.6.0 => 2.5.28 */

/*****************************************************************************/
/* 2.4.22 => 2.4.17 */
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,4,22) )
#define pci_name(x)	((x)->slot_name)
#endif /* 2.4.22 => 2.4.17 */

/*****************************************************************************/
/* 2.6.5 => 2.6.0 */
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,5) )
#define pci_dma_sync_single_for_cpu	pci_dma_sync_single
#define pci_dma_sync_single_for_device	pci_dma_sync_single_for_cpu
#endif /* 2.6.5 => 2.6.0 */

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

#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
/*
 * initialize a work-struct's func and data pointers:
 */
#define PREPARE_WORK(_work, _func, _data)			\
	do {							\
		(_work)->func = _func;				\
		(_work)->data = _data;				\
	} while (0)

#endif
/*****************************************************************************/
/* 2.6.4 => 2.6.0 */
#if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,4,25) || \
    ( LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) && \
      LINUX_VERSION_CODE < KERNEL_VERSION(2,6,4) ) )
#define ETHTOOL_OPS_COMPAT
#endif /* 2.6.4 => 2.6.0 */

/*****************************************************************************/
/* Installations with ethtool version without eeprom, adapter id, or statistics
 * support */

#ifndef ETH_GSTRING_LEN
#define ETH_GSTRING_LEN 32
#endif

#ifndef ETHTOOL_GSTATS
#define ETHTOOL_GSTATS 0x1d
#undef ethtool_drvinfo
#define ethtool_drvinfo k_ethtool_drvinfo
struct k_ethtool_drvinfo {
	u32 cmd;
	char driver[32];
	char version[32];
	char fw_version[32];
	char bus_info[32];
	char reserved1[32];
	char reserved2[16];
	u32 n_stats;
	u32 testinfo_len;
	u32 eedump_len;
	u32 regdump_len;
};

struct ethtool_stats {
	u32 cmd;
	u32 n_stats;
	u64 data[0];
};
#endif /* ETHTOOL_GSTATS */

#ifndef ETHTOOL_PHYS_ID
#define ETHTOOL_PHYS_ID 0x1c
#endif /* ETHTOOL_PHYS_ID */

#ifndef ETHTOOL_GSTRINGS
#define ETHTOOL_GSTRINGS 0x1b
enum ethtool_stringset {
	ETH_SS_TEST             = 0,
	ETH_SS_STATS,
};
struct ethtool_gstrings {
	u32 cmd;            /* ETHTOOL_GSTRINGS */
	u32 string_set;     /* string set id e.c. ETH_SS_TEST, etc*/
	u32 len;            /* number of strings in the string set */
	u8 data[0];
};
#endif /* ETHTOOL_GSTRINGS */

#ifndef ETHTOOL_TEST
#define ETHTOOL_TEST 0x1a
enum ethtool_test_flags {
	ETH_TEST_FL_OFFLINE	= (1 << 0),
	ETH_TEST_FL_FAILED	= (1 << 1),
};
struct ethtool_test {
	u32 cmd;
	u32 flags;
	u32 reserved;
	u32 len;
	u64 data[0];
};
#endif /* ETHTOOL_TEST */

#ifndef ETHTOOL_GEEPROM
#define ETHTOOL_GEEPROM 0xb
#undef ETHTOOL_GREGS
struct ethtool_eeprom {
	u32 cmd;
	u32 magic;
	u32 offset;
	u32 len;
	u8 data[0];
};

struct ethtool_value {
	u32 cmd;
	u32 data;
};
#endif /* ETHTOOL_GEEPROM */

#ifndef ETHTOOL_GLINK
#define ETHTOOL_GLINK 0xa
#endif /* ETHTOOL_GLINK */

#ifndef ETHTOOL_GREGS
#define ETHTOOL_GREGS		0x00000004 /* Get NIC registers */
#define ethtool_regs _kc_ethtool_regs
/* for passing big chunks of data */
struct _kc_ethtool_regs {
	u32 cmd;
	u32 version; /* driver-specific, indicates different chips/revs */
	u32 len; /* bytes */
	u8 data[0];
};
#endif /* ETHTOOL_GREGS */

#ifndef ETHTOOL_GMSGLVL
#define ETHTOOL_GMSGLVL		0x00000007 /* Get driver message level */
#endif
#ifndef ETHTOOL_SMSGLVL
#define ETHTOOL_SMSGLVL		0x00000008 /* Set driver msg level, priv. */
#endif
#ifndef ETHTOOL_NWAY_RST
#define ETHTOOL_NWAY_RST	0x00000009 /* Restart autonegotiation, priv */
#endif
#ifndef ETHTOOL_GLINK
#define ETHTOOL_GLINK		0x0000000a /* Get link status */
#endif
#ifndef ETHTOOL_GEEPROM
#define ETHTOOL_GEEPROM		0x0000000b /* Get EEPROM data */
#endif
#ifndef ETHTOOL_SEEPROM
#define ETHTOOL_SEEPROM		0x0000000c /* Set EEPROM data */
#endif
#ifndef ETHTOOL_GCOALESCE
#define ETHTOOL_GCOALESCE	0x0000000e /* Get coalesce config */
/* for configuring coalescing parameters of chip */
#define ethtool_coalesce _kc_ethtool_coalesce
struct _kc_ethtool_coalesce {
	u32	cmd;	/* ETHTOOL_{G,S}COALESCE */

	/* How many usecs to delay an RX interrupt after
	 * a packet arrives.  If 0, only rx_max_coalesced_frames
	 * is used.
	 */
	u32	rx_coalesce_usecs;

	/* How many packets to delay an RX interrupt after
	 * a packet arrives.  If 0, only rx_coalesce_usecs is
	 * used.  It is illegal to set both usecs and max frames
	 * to zero as this would cause RX interrupts to never be
	 * generated.
	 */
	u32	rx_max_coalesced_frames;

	/* Same as above two parameters, except that these values
	 * apply while an IRQ is being serviced by the host.  Not
	 * all cards support this feature and the values are ignored
	 * in that case.
	 */
	u32	rx_coalesce_usecs_irq;
	u32	rx_max_coalesced_frames_irq;

	/* How many usecs to delay a TX interrupt after
	 * a packet is sent.  If 0, only tx_max_coalesced_frames
	 * is used.
	 */
	u32	tx_coalesce_usecs;

	/* How many packets to delay a TX interrupt after
	 * a packet is sent.  If 0, only tx_coalesce_usecs is
	 * used.  It is illegal to set both usecs and max frames
	 * to zero as this would cause TX interrupts to never be
	 * generated.
	 */
	u32	tx_max_coalesced_frames;

	/* Same as above two parameters, except that these values
	 * apply while an IRQ is being serviced by the host.  Not
	 * all cards support this feature and the values are ignored
	 * in that case.
	 */
	u32	tx_coalesce_usecs_irq;
	u32	tx_max_coalesced_frames_irq;

	/* How many usecs to delay in-memory statistics
	 * block updates.  Some drivers do not have an in-memory
	 * statistic block, and in such cases this value is ignored.
	 * This value must not be zero.
	 */
	u32	stats_block_coalesce_usecs;

	/* Adaptive RX/TX coalescing is an algorithm implemented by
	 * some drivers to improve latency under low packet rates and
	 * improve throughput under high packet rates.  Some drivers
	 * only implement one of RX or TX adaptive coalescing.  Anything
	 * not implemented by the driver causes these values to be
	 * silently ignored.
	 */
	u32	use_adaptive_rx_coalesce;
	u32	use_adaptive_tx_coalesce;

	/* When the packet rate (measured in packets per second)
	 * is below pkt_rate_low, the {rx,tx}_*_low parameters are
	 * used.
	 */
	u32	pkt_rate_low;
	u32	rx_coalesce_usecs_low;
	u32	rx_max_coalesced_frames_low;
	u32	tx_coalesce_usecs_low;
	u32	tx_max_coalesced_frames_low;

	/* When the packet rate is below pkt_rate_high but above
	 * pkt_rate_low (both measured in packets per second) the
	 * normal {rx,tx}_* coalescing parameters are used.
	 */

	/* When the packet rate is (measured in packets per second)
	 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
	 * used.
	 */
	u32	pkt_rate_high;
	u32	rx_coalesce_usecs_high;
	u32	rx_max_coalesced_frames_high;
	u32	tx_coalesce_usecs_high;
	u32	tx_max_coalesced_frames_high;

	/* How often to do adaptive coalescing packet rate sampling,
	 * measured in seconds.  Must not be zero.
	 */
	u32	rate_sample_interval;
};
#endif /* ETHTOOL_GCOALESCE */

#ifndef ETHTOOL_SCOALESCE
#define ETHTOOL_SCOALESCE	0x0000000f /* Set coalesce config. */
#endif
#ifndef ETHTOOL_GRINGPARAM
#define ETHTOOL_GRINGPARAM	0x00000010 /* Get ring parameters */
/* for configuring RX/TX ring parameters */
#define ethtool_ringparam _kc_ethtool_ringparam
struct _kc_ethtool_ringparam {
	u32	cmd;	/* ETHTOOL_{G,S}RINGPARAM */

	/* Read only attributes.  These indicate the maximum number
	 * of pending RX/TX ring entries the driver will allow the
	 * user to set.
	 */
	u32	rx_max_pending;
	u32	rx_mini_max_pending;
	u32	rx_jumbo_max_pending;
	u32	tx_max_pending;

	/* Values changeable by the user.  The valid values are
	 * in the range 1 to the "*_max_pending" counterpart above.
	 */
	u32	rx_pending;
	u32	rx_mini_pending;
	u32	rx_jumbo_pending;
	u32	tx_pending;
};
#endif /* ETHTOOL_GRINGPARAM */

#ifndef ETHTOOL_SRINGPARAM
#define ETHTOOL_SRINGPARAM	0x00000011 /* Set ring parameters, priv. */
#endif
#ifndef ETHTOOL_GPAUSEPARAM
#define ETHTOOL_GPAUSEPARAM	0x00000012 /* Get pause parameters */
/* for configuring link flow control parameters */
#define ethtool_pauseparam _kc_ethtool_pauseparam
struct _kc_ethtool_pauseparam {
	u32	cmd;	/* ETHTOOL_{G,S}PAUSEPARAM */

	/* If the link is being auto-negotiated (via ethtool_cmd.autoneg
	 * being true) the user may set 'autonet' here non-zero to have the
	 * pause parameters be auto-negotiated too.  In such a case, the
	 * {rx,tx}_pause values below determine what capabilities are
	 * advertised.
	 *
	 * If 'autoneg' is zero or the link is not being auto-negotiated,
	 * then {rx,tx}_pause force the driver to use/not-use pause
	 * flow control.
	 */
	u32	autoneg;
	u32	rx_pause;
	u32	tx_pause;
};
#endif /* ETHTOOL_GPAUSEPARAM */

#ifndef ETHTOOL_SPAUSEPARAM
#define ETHTOOL_SPAUSEPARAM	0x00000013 /* Set pause parameters. */
#endif
#ifndef ETHTOOL_GRXCSUM
#define ETHTOOL_GRXCSUM		0x00000014 /* Get RX hw csum enable (ethtool_value) */
#endif
#ifndef ETHTOOL_SRXCSUM
#define ETHTOOL_SRXCSUM		0x00000015 /* Set RX hw csum enable (ethtool_value) */
#endif
#ifndef ETHTOOL_GTXCSUM
#define ETHTOOL_GTXCSUM		0x00000016 /* Get TX hw csum enable (ethtool_value) */
#endif
#ifndef ETHTOOL_STXCSUM
#define ETHTOOL_STXCSUM		0x00000017 /* Set TX hw csum enable (ethtool_value) */
#endif
#ifndef ETHTOOL_GSG
#define ETHTOOL_GSG		0x00000018 /* Get scatter-gather enable
					    * (ethtool_value) */
#endif
#ifndef ETHTOOL_SSG
#define ETHTOOL_SSG		0x00000019 /* Set scatter-gather enable
					    * (ethtool_value). */
#endif
#ifndef ETHTOOL_TEST
#define ETHTOOL_TEST		0x0000001a /* execute NIC self-test, priv. */
#endif
#ifndef ETHTOOL_GSTRINGS
#define ETHTOOL_GSTRINGS	0x0000001b /* get specified string set */
#endif
#ifndef ETHTOOL_PHYS_ID
#define ETHTOOL_PHYS_ID		0x0000001c /* identify the NIC */
#endif
#ifndef ETHTOOL_GSTATS
#define ETHTOOL_GSTATS		0x0000001d /* get NIC-specific statistics */
#endif
#ifndef ETHTOOL_GTSO
#define ETHTOOL_GTSO		0x0000001e /* Get TSO enable (ethtool_value) */
#endif
#ifndef ETHTOOL_STSO
#define ETHTOOL_STSO		0x0000001f /* Set TSO enable (ethtool_value) */
#endif

#ifndef ETHTOOL_BUSINFO_LEN
#define ETHTOOL_BUSINFO_LEN	32
#endif

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

enum RTL8168_DSM_STATE {
	DSM_MAC_INIT = 1,
	DSM_NIC_GOTO_D3 = 2,
	DSM_IF_DOWN = 3,
	DSM_NIC_RESUME_D3 = 4,
	DSM_IF_UP = 5,
};

enum RTL8168_registers {
	MAC0			= 0x00,		/* Ethernet hardware address. */
	MAC4			= 0x04,
	MAR0			= 0x08,		/* Multicast filter. */
	CounterAddrLow		= 0x10,
	CounterAddrHigh		= 0x14,
	TxDescStartAddrLow	= 0x20,
	TxDescStartAddrHigh	= 0x24,
	TxHDescStartAddrLow	= 0x28,
	TxHDescStartAddrHigh	= 0x2c,
	FLASH			= 0x30,
	ERSR			= 0x36,
	ChipCmd			= 0x37,
	TxPoll			= 0x38,
	IntrMask		= 0x3C,
	IntrStatus		= 0x3E,
	TxConfig		= 0x40,
	RxConfig		= 0x44,
	TCTR			= 0x48,
	Cfg9346			= 0x50,
	Config0			= 0x51,
	Config1			= 0x52,
	Config2			= 0x53,
	Config3			= 0x54,
	Config4			= 0x55,
	Config5			= 0x56,
	TimeIntr		= 0x58,
	PHYAR			= 0x60,
	CSIDR			= 0x64,
	CSIAR			= 0x68,
	PHYstatus		= 0x6C,
	MACDBG			= 0x6D,
	GPIO			= 0x6E,
	PMCH			= 0x6F,
	ERIDR			= 0x70,
	ERIAR			= 0x74,
	EPHY_RXER_NUM		= 0x7C,
	EPHYAR			= 0x80,
	OCPDR			= 0xB0,
	OCPAR			= 0xB4,
	DBG_reg			= 0xD1,
	RxMaxSize		= 0xDA,
	EFUSEAR			= 0xDC,
	CPlusCmd		= 0xE0,
	IntrMitigate		= 0xE2,
	RxDescAddrLow		= 0xE4,
	RxDescAddrHigh		= 0xE8,
	Reserved1		= 0xEC,
	FuncEvent		= 0xF0,
	FuncEventMask		= 0xF4,
	FuncPresetState		= 0xF8,
	FuncForceEvent		= 0xFC,
};

enum RTL8168_register_content {
	/* InterruptStatusBits */
	SYSErr		= 0x8000,
	PCSTimeout	= 0x4000,
	SWInt		= 0x0100,
	TxDescUnavail	= 0x0080,
	RxFIFOOver	= 0x0040,
	LinkChg		= 0x0020,
	RxDescUnavail	= 0x0010,
	TxErr		= 0x0008,
	TxOK		= 0x0004,
	RxErr		= 0x0002,
	RxOK		= 0x0001,

	/* RxStatusDesc */
	RxRWT = (1 << 22),
	RxRES = (1 << 21),
	RxRUNT = (1 << 20),
	RxCRC = (1 << 19),

	/* ChipCmdBits */
	StopReq  = 0x80,
	CmdReset = 0x10,
	CmdRxEnb = 0x08,
	CmdTxEnb = 0x04,
	RxBufEmpty = 0x01,

	/* Cfg9346Bits */
	Cfg9346_Lock = 0x00,
	Cfg9346_Unlock = 0xC0,
	Cfg9346_EEDO = (1 << 0),
	Cfg9346_EEDI = (1 << 1),
	Cfg9346_EESK = (1 << 2),
	Cfg9346_EECS = (1 << 3),
	Cfg9346_EEM0 = (1 << 6),
	Cfg9346_EEM1 = (1 << 7),

	/* rx_mode_bits */
	AcceptErr = 0x20,
	AcceptRunt = 0x10,
	AcceptBroadcast = 0x08,
	AcceptMulticast = 0x04,
	AcceptMyPhys = 0x02,
	AcceptAllPhys = 0x01,

	/* Transmit Priority Polling*/
	HPQ = 0x80,
	NPQ = 0x40,
	FSWInt = 0x01,

	/* RxConfigBits */
	Reserved2_shift = 13,
	RxCfgDMAShift = 8,
	RxCfg_128_int_en = (1 << 15),
	RxCfg_fet_multi_en = (1 << 14),
	RxCfg_half_refetch = (1 << 13),
	RxCfg_9356SEL = (1 << 6),

	/* TxConfigBits */
	TxInterFrameGapShift = 24,
	TxDMAShift = 8,	/* DMA burst value (0-7) is shift this many bits */
	TxMACLoopBack = (1 << 17),	/* MAC loopback */

	/* Config1 register p.24 */
	LEDS1		= (1 << 7),
	LEDS0		= (1 << 6),
	Speed_down	= (1 << 4),
	MEMMAP		= (1 << 3),
	IOMAP		= (1 << 2),
	VPD		= (1 << 1),
	PMEnable	= (1 << 0),	/* Power Management Enable */

	/* Config3 register */
	MagicPacket	= (1 << 5),	/* Wake up when receives a Magic Packet */
	LinkUp		= (1 << 4),	/* This bit is reserved in RTL8168B.*/
					/* Wake up when the cable connection is re-established */
	ECRCEN		= (1 << 3),	/* This bit is reserved in RTL8168B*/
	Jumbo_En0	= (1 << 2),	/* This bit is reserved in RTL8168B*/
	RDY_TO_L23	= (1 << 1),	/* This bit is reserved in RTL8168B*/
	Beacon_en	= (1 << 0),	/* This bit is reserved in RTL8168B*/

	/* Config4 register */
	Jumbo_En1	= (1 << 1),	/* This bit is reserved in RTL8168B*/

	/* Config5 register */
	BWF		= (1 << 6),	/* Accept Broadcast wakeup frame */
	MWF		= (1 << 5),	/* Accept Multicast wakeup frame */
	UWF		= (1 << 4),	/* Accept Unicast wakeup frame */
	LanWake		= (1 << 1),	/* LanWake enable/disable */
	PMEStatus	= (1 << 0),	/* PME status can be reset by PCI RST# */

	/* CPlusCmd */
	EnableBist	= (1 << 15),
	Macdbgo_oe	= (1 << 14),
	Normal_mode	= (1 << 13),
	Force_halfdup	= (1 << 12),
	Force_rxflow_en	= (1 << 11),
	Force_txflow_en	= (1 << 10),
	Cxpl_dbg_sel	= (1 << 9),//This bit is reserved in RTL8168B
	ASF		= (1 << 8),//This bit is reserved in RTL8168C
	PktCntrDisable	= (1 << 7),
	RxVlan		= (1 << 6),
	RxChkSum	= (1 << 5),
	Macdbgo_sel	= 0x001C,
	INTT_0		= 0x0000,
	INTT_1		= 0x0001,
	INTT_2		= 0x0002,
	INTT_3		= 0x0003,
	
	/* rtl8168_PHYstatus */
	TxFlowCtrl = 0x40,
	RxFlowCtrl = 0x20,
	_1000bpsF = 0x10,
	_100bps = 0x08,
	_10bps = 0x04,
	LinkStatus = 0x02,
	FullDup = 0x01,

	/* DBG_reg */
	Fix_Nak_1 = (1 << 4),
	Fix_Nak_2 = (1 << 3),
	DBGPIN_E2 = (1 << 0),

	/* DumpCounterCommand */
	CounterDump = 0x8,

	/* PHY access */
	PHYAR_Flag = 0x80000000,
	PHYAR_Write = 0x80000000,
	PHYAR_Read = 0x00000000,
	PHYAR_Reg_Mask = 0x1f,
	PHYAR_Reg_shift = 16,
	PHYAR_Data_Mask = 0xffff,

	/* EPHY access */
	EPHYAR_Flag = 0x80000000,
	EPHYAR_Write = 0x80000000,
	EPHYAR_Read = 0x00000000,
	EPHYAR_Reg_Mask = 0x1f,
	EPHYAR_Reg_shift = 16,
	EPHYAR_Data_Mask = 0xffff,

	/* CSI access */	
	CSIAR_Flag = 0x80000000,
	CSIAR_Write = 0x80000000,
	CSIAR_Read = 0x00000000,
	CSIAR_ByteEn = 0x0f,
	CSIAR_ByteEn_shift = 12,
	CSIAR_Addr_Mask = 0x0fff,

	/* ERI access */
	ERIAR_Flag = 0x80000000,
	ERIAR_Write = 0x80000000,
	ERIAR_Read = 0x00000000,
	ERIAR_Addr_Align = 4, /* ERI access register address must be 4 byte alignment */
	ERIAR_ExGMAC = 0,
	ERIAR_MSIX = 1,
	ERIAR_ASF = 2,
	ERIAR_Type_shift = 16,
	ERIAR_ByteEn = 0x0f,
	ERIAR_ByteEn_shift = 12,

	/* OCP GPHY access */
	OCPDR_Write = 0x80000000,
	OCPDR_Read = 0x00000000,
	OCPDR_Reg_Mask = 0xFF,
	OCPDR_Data_Mask = 0xFFFF,
	OCPDR_GPHY_Reg_shift = 12,
	OCPAR_Flag = 0x80000000,
	OCPAR_GPHY_Write = 0x8000F060,
	OCPAR_GPHY_Read = 0x0000F060,

	/* E-FUSE access */
	EFUSE_WRITE	= 0x80000000,
	EFUSE_WRITE_OK	= 0x00000000,
	EFUSE_READ	= 0x00000000,
	EFUSE_READ_OK	= 0x80000000,
	EFUSE_Reg_Mask	= 0x03FF,
	EFUSE_Reg_Shift	= 8,
	EFUSE_Check_Cnt	= 300,
	EFUSE_READ_FAIL	= 0xFF,
	EFUSE_Data_Mask	= 0x000000FF,

	/* GPIO */
	GPIO_en = (1 << 0),	

};

enum _DescStatusBit {
	DescOwn		= (1 << 31), /* Descriptor is owned by NIC */
	RingEnd		= (1 << 30), /* End of descriptor ring */
	FirstFrag	= (1 << 29), /* First segment of a packet */
	LastFrag	= (1 << 28), /* Final segment of a packet */

	/* Tx private */
	/*------ offset 0 of tx descriptor ------*/
	LargeSend	= (1 << 27), /* TCP Large Send Offload (TSO) */
	MSSShift	= 16,        /* MSS value position */
	MSSMask		= 0xfff,     /* MSS value + LargeSend bit: 12 bits */
	TxIPCS		= (1 << 18), /* Calculate IP checksum */
	TxUDPCS		= (1 << 17), /* Calculate UDP/IP checksum */
	TxTCPCS		= (1 << 16), /* Calculate TCP/IP checksum */
	TxVlanTag	= (1 << 17), /* Add VLAN tag */

	/*@@@@@@ offset 4 of tx descriptor => bits for RTL8168C/CP only		begin @@@@@@*/
	TxUDPCS_C	= (1 << 31), /* Calculate UDP/IP checksum */
	TxTCPCS_C	= (1 << 30), /* Calculate TCP/IP checksum */
	TxIPCS_C	= (1 << 29), /* Calculate IP checksum */
	/*@@@@@@ offset 4 of tx descriptor => bits for RTL8168C/CP only		end @@@@@@*/


	/* Rx private */
	/*------ offset 0 of rx descriptor ------*/
	PID1		= (1 << 18), /* Protocol ID bit 1/2 */
	PID0		= (1 << 17), /* Protocol ID bit 2/2 */

#define RxProtoUDP	(PID1)
#define RxProtoTCP	(PID0)
#define RxProtoIP	(PID1 | PID0)
#define RxProtoMask	RxProtoIP

	RxIPF		= (1 << 16), /* IP checksum failed */
	RxUDPF		= (1 << 15), /* UDP/IP checksum failed */
	RxTCPF		= (1 << 14), /* TCP/IP checksum failed */
	RxVlanTag	= (1 << 16), /* VLAN tag available */

	/*@@@@@@ offset 0 of rx descriptor => bits for RTL8168C/CP only		begin @@@@@@*/
	RxUDPT		= (1 << 18),
	RxTCPT		= (1 << 17),
	/*@@@@@@ offset 0 of rx descriptor => bits for RTL8168C/CP only		end @@@@@@*/

	/*@@@@@@ offset 4 of rx descriptor => bits for RTL8168C/CP only		begin @@@@@@*/
	RxV6F		= (1 << 31),
	RxV4F		= (1 << 30),
	/*@@@@@@ offset 4 of rx descriptor => bits for RTL8168C/CP only		end @@@@@@*/
};

enum features {
//	RTL_FEATURE_WOL	= (1 << 0),
	RTL_FEATURE_MSI	= (1 << 1),
};

enum wol_capability {
	WOL_DISABLED = 0,
	WOL_ENABLED = 1
};

enum bits {
	BIT_0 = (1 << 0),
	BIT_1 = (1 << 1),
	BIT_2 = (1 << 2),
	BIT_3 = (1 << 3),
	BIT_4 = (1 << 4),
	BIT_5 = (1 << 5),
	BIT_6 = (1 << 6),
	BIT_7 = (1 << 7),
	BIT_8 = (1 << 8),
	BIT_9 = (1 << 9),
	BIT_10 = (1 << 10),
	BIT_11 = (1 << 11),
	BIT_12 = (1 << 12),
	BIT_13 = (1 << 13),
	BIT_14 = (1 << 14),
	BIT_15 = (1 << 15),
	BIT_16 = (1 << 16),
	BIT_17 = (1 << 17),
	BIT_18 = (1 << 18),
	BIT_19 = (1 << 19),
	BIT_20 = (1 << 20),
	BIT_21 = (1 << 21),
	BIT_22 = (1 << 22),
	BIT_23 = (1 << 23),
	BIT_24 = (1 << 24),
	BIT_25 = (1 << 25),
	BIT_26 = (1 << 26),
	BIT_27 = (1 << 27),
	BIT_28 = (1 << 28),
	BIT_29 = (1 << 29),
	BIT_30 = (1 << 30),
	BIT_31 = (1 << 31)
};

enum effuse {
	EFUSE_SUPPORT = 1,
	EFUSE_NOT_SUPPORT = 0,
};
#define RsvdMask	0x3fffc000

struct TxDesc {
	u32 opts1;
	u32 opts2;
	u64 addr;
};

struct RxDesc {
	u32 opts1;
	u32 opts2;
	u64 addr;
};

struct ring_info {
	struct sk_buff	*skb;
	u32		len;
	u8		__pad[sizeof(void *) - sizeof(u32)];
};

struct pci_resource {
	u8	cmd;
	u8	cls;
	u16	io_base_h;
	u16	io_base_l;
	u16	mem_base_h;
	u16	mem_base_l;
	u8	ilr;
	u16	resv_0x20_h;
	u16	resv_0x20_l;
	u16	resv_0x24_h;
	u16	resv_0x24_l;
};

struct rtl8168_private {
	void __iomem *mmio_addr;	/* memory map physical address */
	struct pci_dev *pci_dev;	/* Index of PCI device */
	struct net_device *dev;
#ifdef CONFIG_R8168_NAPI
   #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)
	struct napi_struct napi;
   #endif
#endif
	struct net_device_stats stats;	/* statistics of net device */
	spinlock_t lock;		/* spin lock flag */
	spinlock_t phy_lock;		/* spin lock flag for GPHY */
	u32 msg_enable;
	u32 tx_tcp_csum_cmd;
	u32 tx_udp_csum_cmd;
	u32 tx_ip_csum_cmd;
	int max_jumbo_frame_size;
	int chipset;
	int mcfg;
	u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
	u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
	u32 dirty_rx;
	u32 dirty_tx;
	struct TxDesc *TxDescArray;	/* 256-aligned Tx descriptor ring */
	struct RxDesc *RxDescArray;	/* 256-aligned Rx descriptor ring */
	dma_addr_t TxPhyAddr;
	dma_addr_t RxPhyAddr;
	struct sk_buff *Rx_skbuff[NUM_RX_DESC];	/* Rx data buffers */
	struct ring_info tx_skb[NUM_TX_DESC];	/* Tx data buffers */
	unsigned rx_buf_sz;
	int rx_fifo_overflow;
	struct timer_list esd_timer;
	struct timer_list link_timer;
	int old_link_status;
	struct pci_resource pci_cfg_space;
	unsigned int esd_flag;
	unsigned int pci_cfg_is_read;
	unsigned int rtl8168_rx_config;
	u16 cp_cmd;
	u16 intr_mask;
	int phy_auto_nego_reg;
	int phy_1000_ctrl_reg;
	u8 mac_addr[NODE_ADDRESS_SIZE];
#ifdef CONFIG_R8168_VLAN
	struct vlan_group *vlgrp;
#endif
	u8 autoneg;
	u16 speed;
	u8 duplex;
	int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
	void (*get_settings)(struct net_device *, struct ethtool_cmd *);
	void (*phy_reset_enable)(struct net_device *);
	unsigned int (*phy_reset_pending)(struct net_device *);
	unsigned int (*link_ok)(struct net_device *);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
	struct work_struct task;
#else
	struct delayed_work task;
#endif
	unsigned wol_enabled;
	unsigned features;
	int efuse;
};

enum mcfg {
	CFG_METHOD_1 = 0x01,
	CFG_METHOD_2 = 0x02,
	CFG_METHOD_3 = 0x03,
	CFG_METHOD_4 = 0x04,
	CFG_METHOD_5 = 0x05,
	CFG_METHOD_6 = 0x06,
	CFG_METHOD_7 = 0x07,
	CFG_METHOD_8 = 0x08,
	CFG_METHOD_9 = 0x09,
	CFG_METHOD_10 = 0x0a,
	CFG_METHOD_11 = 0x0b,
};

int rtl8168_eri_read(void __iomem *ioaddr, int addr, int len, int type);
int rtl8168_eri_write(void __iomem *ioaddr, int addr, int len, int value, int type);