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121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/* am7990 (lance) definitions
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*
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* This is an extension to the Linux operating system, and is covered by
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* same GNU General Public License that covers that work.
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*
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* Michael Hipp
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* email: mhipp@student.uni-tuebingen.de
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*
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* sources: (mail me or ask archie if you need them)
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* crynwr-packet-driver
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*/
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/*
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* Control and Status Register 0 (CSR0) bit definitions
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* (R=Readable) (W=Writeable) (S=Set on write) (C-Clear on write)
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*
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*/
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#define CSR0_ERR 0x8000 /* Error summary (R) */
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#define CSR0_BABL 0x4000 /* Babble transmitter timeout error (RC) */
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#define CSR0_CERR 0x2000 /* Collision Error (RC) */
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#define CSR0_MISS 0x1000 /* Missed packet (RC) */
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#define CSR0_MERR 0x0800 /* Memory Error (RC) */
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#define CSR0_RINT 0x0400 /* Receiver Interrupt (RC) */
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#define CSR0_TINT 0x0200 /* Transmit Interrupt (RC) */
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#define CSR0_IDON 0x0100 /* Initialization Done (RC) */
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#define CSR0_INTR 0x0080 /* Interrupt Flag (R) */
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#define CSR0_INEA 0x0040 /* Interrupt Enable (RW) */
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#define CSR0_RXON 0x0020 /* Receiver on (R) */
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#define CSR0_TXON 0x0010 /* Transmitter on (R) */
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#define CSR0_TDMD 0x0008 /* Transmit Demand (RS) */
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#define CSR0_STOP 0x0004 /* Stop (RS) */
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#define CSR0_STRT 0x0002 /* Start (RS) */
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#define CSR0_INIT 0x0001 /* Initialize (RS) */
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#define CSR0_CLRALL 0x7f00 /* mask for all clearable bits */
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/*
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* Initialization Block Mode operation Bit Definitions.
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*/
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#define M_PROM 0x8000 /* Promiscuous Mode */
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#define M_INTL 0x0040 /* Internal Loopback */
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#define M_DRTY 0x0020 /* Disable Retry */
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#define M_COLL 0x0010 /* Force Collision */
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#define M_DTCR 0x0008 /* Disable Transmit CRC) */
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#define M_LOOP 0x0004 /* Loopback */
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#define M_DTX 0x0002 /* Disable the Transmitter */
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#define M_DRX 0x0001 /* Disable the Receiver */
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/*
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* Receive message descriptor bit definitions.
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*/
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#define RCV_OWN 0x80 /* owner bit 0 = host, 1 = lance */
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#define RCV_ERR 0x40 /* Error Summary */
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#define RCV_FRAM 0x20 /* Framing Error */
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#define RCV_OFLO 0x10 /* Overflow Error */
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#define RCV_CRC 0x08 /* CRC Error */
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#define RCV_BUF_ERR 0x04 /* Buffer Error */
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#define RCV_START 0x02 /* Start of Packet */
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#define RCV_END 0x01 /* End of Packet */
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/*
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* Transmit message descriptor bit definitions.
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*/
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#define XMIT_OWN 0x80 /* owner bit 0 = host, 1 = lance */
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#define XMIT_ERR 0x40 /* Error Summary */
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#define XMIT_RETRY 0x10 /* more the 1 retry needed to Xmit */
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#define XMIT_1_RETRY 0x08 /* one retry needed to Xmit */
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#define XMIT_DEF 0x04 /* Deferred */
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#define XMIT_START 0x02 /* Start of Packet */
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#define XMIT_END 0x01 /* End of Packet */
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/*
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* transmit status (2) (valid if XMIT_ERR == 1)
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*/
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#define XMIT_TDRMASK 0x03ff /* time-domain-reflectometer-value */
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#define XMIT_RTRY 0x0400 /* Failed after 16 retransmissions */
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#define XMIT_LCAR 0x0800 /* Loss of Carrier */
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#define XMIT_LCOL 0x1000 /* Late collision */
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#define XMIT_RESERV 0x2000 /* Reserved */
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#define XMIT_UFLO 0x4000 /* Underflow (late memory) */
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#define XMIT_BUFF 0x8000 /* Buffering error (no ENP) */
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struct init_block {
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unsigned short mode;
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unsigned char eaddr[6];
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unsigned char filter[8];
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/* bit 29-31: number of rmd's (power of 2) */
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u32 rrp; /* receive ring pointer (align 8) */
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/* bit 29-31: number of tmd's (power of 2) */
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u32 trp; /* transmit ring pointer (align 8) */
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};
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struct rmd { /* Receive Message Descriptor */
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union {
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volatile u32 buffer;
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struct {
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volatile unsigned char dummy[3];
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volatile unsigned char status;
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} s;
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} u;
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volatile short blen;
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volatile unsigned short mlen;
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};
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struct tmd {
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union {
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volatile u32 buffer;
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struct {
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volatile unsigned char dummy[3];
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volatile unsigned char status;
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} s;
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} u;
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volatile unsigned short blen;
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volatile unsigned short status2;
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};
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