jz_cs8900.h

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#define PP_SelfSTAT_ELPresent  0x0800  /* External address latch logic available */
#define PP_SelfSTAT_EEsize     0x1000  /* Size of EEPROM */

#define PP_BusSTAT   0x0138  /* Bus status */
#define PP_BusSTAT_TxBid       0x0080  /* Tx error */
#define PP_BusSTAT_TxRDY       0x0100  /* Ready for Tx data */

#define PP_TDR       0x013C  /* AUI Time Domain Reflectometer */

/* initiate transmit registers */

#define PP_TxCommand 0x0144  /* Tx Command */
#define PP_TxLength  0x0146  /* Tx Length */


/* address filter registers */

#define PP_LAF       0x0150  /* Logical address filter (6 bytes) */
#define PP_IA        0x0158  /* Individual address (MAC) */

/* EEPROM Kram */
#define SI_BUSY 0x0100
#define PP_SelfST 0x0136	/*  Self State register */
#define PP_EECMD 0x0040		/*  NVR Interface Command register */
#define PP_EEData 0x0042	/*  NVR Interface Data Register */
#define EEPROM_WRITE_EN		0x00F0
#define EEPROM_WRITE_DIS	0x0000
#define EEPROM_WRITE_CMD	0x0100
#define EEPROM_READ_CMD		0x0200
#define EEPROM_ERASE_CMD	0x0300


/*
 * Values
 */

/* PP_IntNum */
#define INTRQ0			0x0000
#define INTRQ1			0x0001
#define INTRQ2			0x0002
#define INTRQ3			0x0003

/* PP_ProductID */
#define EISA_REG_CODE	0x630e
#define REVISION(x)		(((x) & 0x1f00) >> 8)
#define VERSION(x)		((x) & ~0x1f00)

#define CS8900A			0x0000
#define REV_B			7
#define REV_C			8
#define REV_D			9

/* PP_RxCFG */
#define Skip_1			0x0040
#define StreamE			0x0080
#define RxOKiE			0x0100
#define RxDMAonly		0x0200
#define AutoRxDMAE		0x0400
#define BufferCRC		0x0800
#define CRCerroriE		0x1000
#define RuntiE			0x2000
#define ExtradataiE		0x4000

/* PP_RxCTL */
#define IAHashA			0x0040
#define PromiscuousA	0x0080
#define RxOKA			0x0100
#define MulticastA		0x0200
#define IndividualA		0x0400
#define BroadcastA		0x0800
#define CRCerrorA		0x1000
#define RuntA			0x2000
#define ExtradataA		0x4000

/* PP_TxCFG */
#define Loss_of_CRSiE	0x0040
#define SQErroriE		0x0080
#define TxOKiE			0x0100
#define Out_of_windowiE	0x0200
#define JabberiE		0x0400
#define AnycolliE		0x0800
#define T16colliE		0x8000

/* PP_BufCFG */
#define SWint_X			0x0040
#define RxDMAiE			0x0080
#define Rdy4TxiE		0x0100
#define TxUnderruniE	0x0200
#define RxMissiE		0x0400
#define Rx128iE			0x0800
#define TxColOvfiE		0x1000
#define MissOvfloiE		0x2000
#define RxDestiE		0x8000

/* PP_LineCTL */
#define SerRxON			0x0040
#define SerTxON			0x0080
#define AUIonly			0x0100
#define AutoAUI_10BT	0x0200
#define ModBackoffE		0x0800
#define PolarityDis		0x1000
#define L2_partDefDis	0x2000
#define LoRxSquelch		0x4000

/* PP_SelfCTL */
#define RESET			0x0040
#define SWSuspend		0x0100
#define HWSleepE		0x0200
#define HWStandbyE		0x0400
#define HC0E			0x1000
#define HC1E			0x2000
#define HCB0			0x4000
#define HCB1			0x8000

/* PP_BusCTL */
#define ResetRxDMA		0x0040
#define DMAextend		0x0100
#define UseSA			0x0200
#define MemoryE			0x0400
#define DMABurst		0x0800
#define IOCHRDYE		0x1000
#define RxDMAsize		0x2000
#define EnableRQ		0x8000

/* PP_TestCTL */
#define DisableLT		0x0080
#define ENDECloop		0x0200
#define AUIloop			0x0400
#define DisableBackoff	0x0800
#define FDX				0x4000

/* PP_ISQ */
#define RegNum(x) ((x) & 0x3f)
#define RegContent(x) ((x) & ~0x3d)

#define RxEvent			0x0004
#define TxEvent			0x0008
#define BufEvent		0x000c
#define RxMISS			0x0010
#define TxCOL			0x0012

/* PP_RxStatus */
#define IAHash			0x0040
#define Dribblebits		0x0080
#define RxOK			0x0100
#define Hashed			0x0200
#define IndividualAdr	0x0400
#define Broadcast		0x0800
#define CRCerror		0x1000
#define Runt			0x2000
#define Extradata		0x4000

#define HashTableIndex(x) ((x) >> 0xa)

/* PP_TxCMD */
#define After5			0
#define After381		1
#define After1021		2
#define AfterAll		3
#define TxStart(x) ((x) << 6)

#define Force			0x0100
#define Onecoll			0x0200
#define InhibitCRC		0x1000
#define TxPadDis		0x2000

/* PP_BusST */
#define TxBidErr		0x0080
#define Rdy4TxNOW		0x0100

/* PP_TxEvent */
#define Loss_of_CRS		0x0040
#define SQEerror		0x0080
#define TxOK			0x0100
#define Out_of_window	0x0200
#define Jabber			0x0400
#define T16coll			0x8000

#define TX_collisions(x) (((x) >> 0xb) & ~0x8000)

/* PP_BufEvent */
#define SWint			0x0040
#define RxDMAFrame		0x0080
#define Rdy4Tx			0x0100
#define TxUnderrun		0x0200
#define RxMiss			0x0400
#define Rx128			0x0800
#define RxDest			0x8000

/* PP_RxMISS */
#define MissCount(x) ((x) >> 6)

/* PP_TxCOL */
#define ColCount(x) ((x) >> 6)

/* PP_SelfST */
#define T3VActive		0x0040
#define INITD			0x0080
#define SIBUSY			0x0100
#define EEPROMpresent	0x0200
#define EEPROMOK		0x0400
#define ELpresent		0x0800
#define EEsize			0x1000

/* PP_EEPROMCommand */
#define EEWriteRegister	0x0100
#define EEReadRegister	0x0200
#define EEEraseRegister	0x0300
#define ELSEL			0x0400

#define PP_RxStatus			0x0400	/* Section 4.7.1   Receive Status */
#define PP_RxLength			0x0402	/* Section 4.7.1   Receive Length (in bytes) */
#define PP_RxFrame			0x0404	/* Section 4.7.2   Receive Frame Location */
#define PP_TxFrame			0x0a00
#define PP_TxCMD			0x0144	
#define PP_BusST			0x0138	
#define PP_TxCOL			0x0132

static int cs8900_e2prom_read(unsigned char, unsigned short *);
static int cs8900_e2prom_write(unsigned char, unsigned short);