/*
 * Agere Systems Inc.
 * 10/100/1000 Base-T Ethernet Driver for the ET1301 and ET131x series MACs
 *
 * Copyright © 2005 Agere Systems Inc.
 * All rights reserved.
 *   http://www.agere.com
 *
 *------------------------------------------------------------------------------
 *
 * et131x_adapter.h - Header which includes the private adapter structure, along
 *                    with related support structures, macros, definitions, etc.
 *
 *------------------------------------------------------------------------------
 *
 * SOFTWARE LICENSE
 *
 * This software is provided subject to the following terms and conditions,
 * which you should read carefully before using the software.  Using this
 * software indicates your acceptance of these terms and conditions.  If you do
 * not agree with these terms and conditions, do not use the software.
 *
 * Copyright © 2005 Agere Systems Inc.
 * All rights reserved.
 *
 * Redistribution and use in source or binary forms, with or without
 * modifications, are permitted provided that the following conditions are met:
 *
 * . Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following Disclaimer as comments in the code as
 *    well as in the documentation and/or other materials provided with the
 *    distribution.
 *
 * . Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following Disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * . Neither the name of Agere Systems Inc. nor the names of the contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * Disclaimer
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  ANY
 * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
 * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 *
 */

#ifndef __ET131X_ADAPTER_H__
#define __ET131X_ADAPTER_H__

#include "et1310_address_map.h"
#include "et1310_tx.h"
#include "et1310_rx.h"

/*
 * Do not change these values: if changed, then change also in respective
 * TXdma and Rxdma engines
 */
#define NUM_DESC_PER_RING_TX         512	/* TX Do not change these values */
#define NUM_TCB                      64

/*
 * These values are all superseded by registry entries to facilitate tuning.
 * Once the desired performance has been achieved, the optimal registry values
 * should be re-populated to these #defines:
 */
#define NUM_TRAFFIC_CLASSES          1

#define TX_ERROR_PERIOD             1000

#define LO_MARK_PERCENT_FOR_PSR     15
#define LO_MARK_PERCENT_FOR_RX      15

/* RFD (Receive Frame Descriptor) */
struct rfd {
	struct list_head list_node;
	struct sk_buff *skb;
	u32 len;	/* total size of receive frame */
	u16 bufferindex;
	u8 ringindex;
};

/* Flow Control */
#define FLOW_BOTH	0
#define FLOW_TXONLY	1
#define FLOW_RXONLY	2
#define FLOW_NONE	3

/* Struct to define some device statistics */
typedef struct _ce_stats_t {
	/* Link Input/Output stats */
	uint64_t ipackets;	/* # of in packets */
	uint64_t opackets;	/* # of out packets */

	/* MIB II variables
	 *
	 * NOTE: atomic_t types are only guaranteed to store 24-bits; if we
	 * MUST have 32, then we'll need another way to perform atomic
	 * operations
	 */
	u32 unircv;	/* # multicast packets received */
	atomic_t unixmt;	/* # multicast packets for Tx */
	u32 multircv;	/* # multicast packets received */
	atomic_t multixmt;	/* # multicast packets for Tx */
	u32 brdcstrcv;	/* # broadcast packets received */
	atomic_t brdcstxmt;	/* # broadcast packets for Tx */
	u32 norcvbuf;	/* # Rx packets discarded */
	u32 noxmtbuf;	/* # Tx packets discarded */

	/* Transciever state informations. */
	u8 xcvr_addr;
	u32 xcvr_id;

	/* Tx Statistics. */
	u32 tx_uflo;		/* Tx Underruns */

	u32 collisions;
	u32 excessive_collisions;
	u32 first_collision;
	u32 late_collisions;
	u32 max_pkt_error;
	u32 tx_deferred;

	/* Rx Statistics. */
	u32 rx_ov_flow;	/* Rx Overflow */

	u32 length_err;
	u32 alignment_err;
	u32 crc_err;
	u32 code_violations;
	u32 other_errors;

	u32 SynchrounousIterations;
	u32 InterruptStatus;
} CE_STATS_t, *PCE_STATS_t;


/* The private adapter structure */
struct et131x_adapter {
	struct net_device *netdev;
	struct pci_dev *pdev;

	struct work_struct task;

	/* Flags that indicate current state of the adapter */
	u32 Flags;
	u32 HwErrCount;

	/* Configuration  */
	u8 rom_addr[ETH_ALEN];
	u8 addr[ETH_ALEN];
	bool has_eeprom;
	u8 eeprom_data[2];

	/* Spinlocks */
	spinlock_t Lock;

	spinlock_t TCBSendQLock;
	spinlock_t TCBReadyQLock;
	spinlock_t send_hw_lock;

	spinlock_t rcv_lock;
	spinlock_t RcvPendLock;
	spinlock_t FbrLock;

	spinlock_t PHYLock;

	/* Packet Filter and look ahead size */
	u32 PacketFilter;
	u32 linkspeed;
	u32 duplex_mode;

	/* multicast list */
	u32 MCAddressCount;
	u8 MCList[NIC_MAX_MCAST_LIST][ETH_ALEN];

	/* Pointer to the device's PCI register space */
	ADDRESS_MAP_t __iomem *regs;

	/* Registry parameters */
	u8 SpeedDuplex;		/* speed/duplex */
	u8 wanted_flow;		/* Flow we want for 802.3x flow control */
	u8 RegistryPhyComa;	/* Phy Coma mode enable/disable */

	u32 RegistryRxMemEnd;	/* Size of internal rx memory */
	u32 RegistryJumboPacket;	/* Max supported ethernet packet size */


	/* Derived from the registry: */
	u8 AiForceDpx;		/* duplex setting */
	u16 AiForceSpeed;	/* 'Speed', user over-ride of line speed */
	u8 flowcontrol;		/* flow control validated by the far-end */
	enum {
		NETIF_STATUS_INVALID = 0,
		NETIF_STATUS_MEDIA_CONNECT,
		NETIF_STATUS_MEDIA_DISCONNECT,
		NETIF_STATUS_MAX
	} MediaState;

	/* Minimize init-time */
	struct timer_list ErrorTimer;

	/* variable putting the phy into coma mode when boot up with no cable
	 * plugged in after 5 seconds
	 */
	u8 boot_coma;

	/* Next two used to save power information at power down. This
	 * information will be used during power up to set up parts of Power
	 * Management in JAGCore
	 */
	u16 pdown_speed;
	u8 pdown_duplex;

	u32 CachedMaskValue;

	/* Xcvr status at last poll */
	MI_BMSR_t Bmsr;

	/* Tx Memory Variables */
	struct tx_ring tx_ring;

	/* Rx Memory Variables */
	struct rx_ring rx_ring;

	/* Loopback specifics */
	u8 ReplicaPhyLoopbk;	/* Replica Enable */
	u8 ReplicaPhyLoopbkPF;	/* Replica Enable Pass/Fail */

	/* Stats */
	CE_STATS_t Stats;

	struct net_device_stats net_stats;
	struct net_device_stats net_stats_prev;
};

#endif /* __ET131X_ADAPTER_H__ */