/*- * * This software may be used and distributed according to the terms * of the GNU Public License, incorporated herein by reference. * * Module : sk_g16.h * Version : $Revision: 1.1.4.1 $ * * Author : M.Hipp (mhipp@student.uni-tuebingen.de) * changes by : Patrick J.D. Weichmann * * Date Created : 94/05/25 * * Description : In here are all necessary definitions of * the am7990 (LANCE) chip used for writing a * network device driver which uses this chip * -*/ #ifndef SK_G16_H #define SK_G16_H /* * Control and Status Register 0 (CSR0) bit definitions * * (R=Readable) (W=Writeable) (S=Set on write) (C-Clear on write) * */ #define CSR0_ERR 0x8000 /* Error summary (R) */ #define CSR0_BABL 0x4000 /* Babble transmitter timeout error (RC) */ #define CSR0_CERR 0x2000 /* Collision Error (RC) */ #define CSR0_MISS 0x1000 /* Missed packet (RC) */ #define CSR0_MERR 0x0800 /* Memory Error (RC) */ #define CSR0_RINT 0x0400 /* Receiver Interrupt (RC) */ #define CSR0_TINT 0x0200 /* Transmit Interrupt (RC) */ #define CSR0_IDON 0x0100 /* Initialization Done (RC) */ #define CSR0_INTR 0x0080 /* Interrupt Flag (R) */ #define CSR0_INEA 0x0040 /* Interrupt Enable (RW) */ #define CSR0_RXON 0x0020 /* Receiver on (R) */ #define CSR0_TXON 0x0010 /* Transmitter on (R) */ #define CSR0_TDMD 0x0008 /* Transmit Demand (RS) */ #define CSR0_STOP 0x0004 /* Stop (RS) */ #define CSR0_STRT 0x0002 /* Start (RS) */ #define CSR0_INIT 0x0001 /* Initialize (RS) */ #define CSR0_CLRALL 0x7f00 /* mask for all clearable bits */ /* * Control and Status Register 3 (CSR3) bit definitions * */ #define CSR3_BSWAP 0x0004 /* Byte Swap (RW) */ #define CSR3_ACON 0x0002 /* ALE Control (RW) */ #define CSR3_BCON 0x0001 /* Byte Control (RW) */ /* * Initialization Block Mode operation Bit Definitions. */ #define MODE_PROM 0x8000 /* Promiscuous Mode */ #define MODE_INTL 0x0040 /* Internal Loopback */ #define MODE_DRTY 0x0020 /* Disable Retry */ #define MODE_COLL 0x0010 /* Force Collision */ #define MODE_DTCR 0x0008 /* Disable Transmit CRC) */ #define MODE_LOOP 0x0004 /* Loopback */ #define MODE_DTX 0x0002 /* Disable the Transmitter */ #define MODE_DRX 0x0001 /* Disable the Receiver */ #define MODE_NORMAL 0x0000 /* Normal operation mode */ /* * Receive message descriptor status bit definitions. */ #define RX_OWN 0x80 /* Owner bit 0 = host, 1 = lance */ #define RX_ERR 0x40 /* Error Summary */ #define RX_FRAM 0x20 /* Framing Error */ #define RX_OFLO 0x10 /* Overflow Error */ #define RX_CRC 0x08 /* CRC Error */ #define RX_BUFF 0x04 /* Buffer Error */ #define RX_STP 0x02 /* Start of Packet */ #define RX_ENP 0x01 /* End of Packet */ /* * Transmit message descriptor status bit definitions. */ #define TX_OWN 0x80 /* Owner bit 0 = host, 1 = lance */ #define TX_ERR 0x40 /* Error Summary */ #define TX_MORE 0x10 /* More the 1 retry needed to Xmit */ #define TX_ONE 0x08 /* One retry needed to Xmit */ #define TX_DEF 0x04 /* Deferred */ #define TX_STP 0x02 /* Start of Packet */ #define TX_ENP 0x01 /* End of Packet */ /* * Transmit status (2) (valid if TX_ERR == 1) */ #define TX_BUFF 0x8000 /* Buffering error (no ENP) */ #define TX_UFLO 0x4000 /* Underflow (late memory) */ #define TX_LCOL 0x1000 /* Late collision */ #define TX_LCAR 0x0400 /* Loss of Carrier */ #define TX_RTRY 0x0200 /* Failed after 16 retransmissions */ #define TX_TDR 0x003f /* Time-domain-reflectometer-value */ /* * Structures used for Communication with the LANCE */ /* LANCE Initialize Block */ struct init_block { unsigned short mode; /* Mode Register */ unsigned char paddr[6]; /* Physical Address (MAC) */ unsigned char laddr[8]; /* Logical Filter Address (not used) */ unsigned int rdrp; /* Receive Descriptor Ring pointer */ unsigned int tdrp; /* Transmit Descriptor Ring pointer */ }; /* Receive Message Descriptor Entry */ struct rmd { union { unsigned long buffer; /* Address of buffer */ struct { unsigned char unused[3]; unsigned volatile char status; /* Status Bits */ } s; } u; volatile short blen; /* Buffer Length (two's complement) */ unsigned short mlen; /* Message Byte Count */ }; /* Transmit Message Descriptor Entry */ struct tmd { union { unsigned long buffer; /* Address of buffer */ struct { unsigned char unused[3]; unsigned volatile char status; /* Status Bits */ } s; } u; unsigned short blen; /* Buffer Length (two's complement) */ unsigned volatile short status2; /* Error Status Bits */ }; #endif /* End of SK_G16_H */