1 /* Definitions for the 3Com 3c503 Etherlink 2. */ 2 /* This file is distributed under the GPL. 3 Many of these names and comments are directly from the Crynwr packet 4 drivers, which are released under the GPL. */ 5 6 #define EL2H (dev->base_addr + 0x400) 7 #define EL2L (dev->base_addr) 8 9 /* Vendor unique hardware addr. prefix. 3Com has 2 because they ran 10 out of available addresses on the first one... */ 11 12 #define OLD_3COM_ID 0x02608c 13 #define NEW_3COM_ID 0x0020af 14 15 /* Shared memory management parameters. NB: The 8 bit cards have only 16 one bank (MB1) which serves both Tx and Rx packet space. The 16bit 17 cards have 2 banks, MB0 for Tx packets, and MB1 for Rx packets. 18 You choose which bank appears in the sh. mem window with EGACFR_MBSn */ 19 20 #define EL2_MB0_START_PG (0x00) /* EL2/16 Tx packets go in bank 0 */ 21 #define EL2_MB1_START_PG (0x20) /* First page of bank 1 */ 22 #define EL2_MB1_STOP_PG (0x40) /* Last page +1 of bank 1 */ 23 24 /* 3Com 3c503 ASIC registers */ 25 #define E33G_STARTPG (EL2H+0) /* Start page, matching EN0_STARTPG */ 26 #define E33G_STOPPG (EL2H+1) /* Stop page, must match EN0_STOPPG */ 27 #define E33G_DRQCNT (EL2H+2) /* DMA burst count */ 28 #define E33G_IOBASE (EL2H+3) /* Read of I/O base jumpers. */ 29 /* (non-useful, but it also appears at the end of EPROM space) */ 30 #define E33G_ROMBASE (EL2H+4) /* Read of memory base jumpers. */ 31 #define E33G_GACFR (EL2H+5) /* Config/setup bits for the ASIC GA */ 32 #define E33G_CNTRL (EL2H+6) /* Board's main control register */ 33 #define E33G_STATUS (EL2H+7) /* Status on completions. */ 34 #define E33G_IDCFR (EL2H+8) /* Interrupt/DMA config register */ 35 /* (Which IRQ to assert, DMA chan to use) */ 36 #define E33G_DMAAH (EL2H+9) /* High byte of DMA address reg */ 37 #define E33G_DMAAL (EL2H+10) /* Low byte of DMA address reg */ 38 /* "Vector pointer" - if this address matches a read, the EPROM (rather than 39 shared RAM) is mapped into memory space. */ 40 #define E33G_VP2 (EL2H+11) 41 #define E33G_VP1 (EL2H+12) 42 #define E33G_VP0 (EL2H+13) 43 #define E33G_FIFOH (EL2H+14) /* FIFO for programmed I/O moves */ 44 #define E33G_FIFOL (EL2H+15) /* ... low byte of above. */ 45 46 /* Bits in E33G_CNTRL register: */ 47 48 #define ECNTRL_RESET (0x01) /* Software reset of the ASIC and 8390 */ 49 #define ECNTRL_THIN (0x02) /* Onboard xcvr enable, AUI disable */ 50 #define ECNTRL_AUI (0x00) /* Onboard xcvr disable, AUI enable */ 51 #define ECNTRL_SAPROM (0x04) /* Map the station address prom */ 52 #define ECNTRL_DBLBFR (0x20) /* FIFO configuration bit */ 53 #define ECNTRL_OUTPUT (0x40) /* PC-to-3C503 direction if 1 */ 54 #define ECNTRL_INPUT (0x00) /* 3C503-to-PC direction if 0 */ 55 #define ECNTRL_START (0x80) /* Start the DMA logic */ 56 57 /* Bits in E33G_STATUS register: */ 58 59 #define ESTAT_DPRDY (0x80) /* Data port (of FIFO) ready */ 60 #define ESTAT_UFLW (0x40) /* Tried to read FIFO when it was empty */ 61 #define ESTAT_OFLW (0x20) /* Tried to write FIFO when it was full */ 62 #define ESTAT_DTC (0x10) /* Terminal Count from PC bus DMA logic */ 63 #define ESTAT_DIP (0x08) /* DMA In Progress */ 64 65 /* Bits in E33G_GACFR register: */ 66 67 #define EGACFR_NIM (0x80) /* NIC interrupt mask */ 68 #define EGACFR_TCM (0x40) /* DMA term. count interrupt mask */ 69 #define EGACFR_RSEL (0x08) /* Map a bank of card mem into system mem */ 70 #define EGACFR_MBS2 (0x04) /* Memory bank select, bit 2. */ 71 #define EGACFR_MBS1 (0x02) /* Memory bank select, bit 1. */ 72 #define EGACFR_MBS0 (0x01) /* Memory bank select, bit 0. */ 73 74 #define EGACFR_NORM (0x49) /* TCM | RSEL | MBS0 */ 75 #define EGACFR_IRQOFF (0xc9) /* TCM | RSEL | MBS0 | NIM */ 76 77 /* 78 MBS2 MBS1 MBS0 Sh. mem windows card mem at: 79 ---- ---- ---- ----------------------------- 80 0 0 0 0x0000 -- bank 0 81 0 0 1 0x2000 -- bank 1 (only choice for 8bit card) 82 0 1 0 0x4000 -- bank 2, not used 83 0 1 1 0x6000 -- bank 3, not used 84 85 There was going to be a 32k card that used bank 2 and 3, but it 86 never got produced. 87 88 */ 89 90 91 /* End of 3C503 parameter definitions */ 92