1 /* am7990 (lance) definitions 2 * 3 * This is an extension to the Linux operating system, and is covered by 4 * same GNU General Public License that covers that work. 5 * 6 * Michael Hipp 7 * email: mhipp@student.uni-tuebingen.de 8 * 9 * sources: (mail me or ask archie if you need them) 10 * crynwr-packet-driver 11 */ 12 13 /* 14 * Control and Status Register 0 (CSR0) bit definitions 15 * (R=Readable) (W=Writeable) (S=Set on write) (C-Clear on write) 16 * 17 */ 18 19 #define CSR0_ERR 0x8000 /* Error summary (R) */ 20 #define CSR0_BABL 0x4000 /* Babble transmitter timeout error (RC) */ 21 #define CSR0_CERR 0x2000 /* Collision Error (RC) */ 22 #define CSR0_MISS 0x1000 /* Missed packet (RC) */ 23 #define CSR0_MERR 0x0800 /* Memory Error (RC) */ 24 #define CSR0_RINT 0x0400 /* Receiver Interrupt (RC) */ 25 #define CSR0_TINT 0x0200 /* Transmit Interrupt (RC) */ 26 #define CSR0_IDON 0x0100 /* Initialization Done (RC) */ 27 #define CSR0_INTR 0x0080 /* Interrupt Flag (R) */ 28 #define CSR0_INEA 0x0040 /* Interrupt Enable (RW) */ 29 #define CSR0_RXON 0x0020 /* Receiver on (R) */ 30 #define CSR0_TXON 0x0010 /* Transmitter on (R) */ 31 #define CSR0_TDMD 0x0008 /* Transmit Demand (RS) */ 32 #define CSR0_STOP 0x0004 /* Stop (RS) */ 33 #define CSR0_STRT 0x0002 /* Start (RS) */ 34 #define CSR0_INIT 0x0001 /* Initialize (RS) */ 35 36 #define CSR0_CLRALL 0x7f00 /* mask for all clearable bits */ 37 /* 38 * Initialization Block Mode operation Bit Definitions. 39 */ 40 41 #define M_PROM 0x8000 /* Promiscuous Mode */ 42 #define M_INTL 0x0040 /* Internal Loopback */ 43 #define M_DRTY 0x0020 /* Disable Retry */ 44 #define M_COLL 0x0010 /* Force Collision */ 45 #define M_DTCR 0x0008 /* Disable Transmit CRC) */ 46 #define M_LOOP 0x0004 /* Loopback */ 47 #define M_DTX 0x0002 /* Disable the Transmitter */ 48 #define M_DRX 0x0001 /* Disable the Receiver */ 49 50 51 /* 52 * Receive message descriptor bit definitions. 53 */ 54 55 #define RCV_OWN 0x80 /* owner bit 0 = host, 1 = lance */ 56 #define RCV_ERR 0x40 /* Error Summary */ 57 #define RCV_FRAM 0x20 /* Framing Error */ 58 #define RCV_OFLO 0x10 /* Overflow Error */ 59 #define RCV_CRC 0x08 /* CRC Error */ 60 #define RCV_BUF_ERR 0x04 /* Buffer Error */ 61 #define RCV_START 0x02 /* Start of Packet */ 62 #define RCV_END 0x01 /* End of Packet */ 63 64 65 /* 66 * Transmit message descriptor bit definitions. 67 */ 68 69 #define XMIT_OWN 0x80 /* owner bit 0 = host, 1 = lance */ 70 #define XMIT_ERR 0x40 /* Error Summary */ 71 #define XMIT_RETRY 0x10 /* more the 1 retry needed to Xmit */ 72 #define XMIT_1_RETRY 0x08 /* one retry needed to Xmit */ 73 #define XMIT_DEF 0x04 /* Deferred */ 74 #define XMIT_START 0x02 /* Start of Packet */ 75 #define XMIT_END 0x01 /* End of Packet */ 76 77 /* 78 * transmit status (2) (valid if XMIT_ERR == 1) 79 */ 80 81 #define XMIT_TDRMASK 0x03ff /* time-domain-reflectometer-value */ 82 #define XMIT_RTRY 0x0400 /* Failed after 16 retransmissions */ 83 #define XMIT_LCAR 0x0800 /* Loss of Carrier */ 84 #define XMIT_LCOL 0x1000 /* Late collision */ 85 #define XMIT_RESERV 0x2000 /* Reserved */ 86 #define XMIT_UFLO 0x4000 /* Underflow (late memory) */ 87 #define XMIT_BUFF 0x8000 /* Buffering error (no ENP) */ 88 89 struct init_block { 90 unsigned short mode; 91 unsigned char eaddr[6]; 92 unsigned char filter[8]; 93 /* bit 29-31: number of rmd's (power of 2) */ 94 u32 rrp; /* receive ring pointer (align 8) */ 95 /* bit 29-31: number of tmd's (power of 2) */ 96 u32 trp; /* transmit ring pointer (align 8) */ 97 }; 98 99 struct rmd { /* Receive Message Descriptor */ 100 union { 101 volatile u32 buffer; 102 struct { 103 volatile unsigned char dummy[3]; 104 volatile unsigned char status; 105 } s; 106 } u; 107 volatile short blen; 108 volatile unsigned short mlen; 109 }; 110 111 struct tmd { 112 union { 113 volatile u32 buffer; 114 struct { 115 volatile unsigned char dummy[3]; 116 volatile unsigned char status; 117 } s; 118 } u; 119 volatile unsigned short blen; 120 volatile unsigned short status2; 121 }; 122