1 /* 2 * Copyright (c) 1986 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)ikreg.h 7.3 (Berkeley) 06/28/90 8 */ 9 10 /* 11 * IKON DR-11W register definitions. 12 */ 13 struct ikdevice { 14 u_short ik_csr; /* control status register */ 15 u_short ik_data; /* data in/out register */ 16 u_char ik_mod; /* address modifier */ 17 u_char ik_vec; /* interrupt vector */ 18 u_short ik_pulse; /* pulse commands (w) */ 19 u_short ik_fill[5]; 20 u_short ik_balo; /* low word of dma beginning address (w) */ 21 u_short ik_wc; /* dma word count */ 22 u_short ik_calo; /* low word of dma current address (r) */ 23 u_short ik_fill1; 24 u_short ik_bahi; /* high word of dma beginning address (w) */ 25 u_short ik_fill2; 26 u_short ik_cahi; /* high word of dma current address (r) */ 27 }; 28 29 /* 30 * CSR control definitions (write-only). 31 */ 32 #define IKCSR_GO 0x0001 /* start dma */ 33 #define IKCSR_FNC1 0x0002 /* function bit 1 */ 34 #define IKCSR_FNC2 0x0004 /* function bit 2 */ 35 #define IKCSR_FNC3 0x0008 /* function bit 3 */ 36 /* bits 4-5 are unused */ 37 #define IKCSR_IENA 0x0040 /* enable/disable interrupts */ 38 /* bit 7 is unused */ 39 #define IKCSR_CYCLE 0x0100 /* force dma to cycle */ 40 /* bits 9-11 are unused */ 41 #define IKCSR_MCLR 0x1000 /* master clear board */ 42 #define IKCSR_RPERR 0x2000 /* reset parity error */ 43 #define IKCSR_RATTF 0x4000 /* reset attention */ 44 #define IKCSR_RDMAF 0x8000 /* reset dma completion */ 45 46 /* 47 * CSR status definitions (read-only). 48 */ 49 #define IKCSR_DEV 0x0001 /* device flag (0 = 10083, 1 = 10077) */ 50 /* bits 1-3 reflect the function latch state */ 51 #define IKCSR_TIMO 0x0010 /* bus timeout during dma */ 52 #define IKCSR_BERR 0x0020 /* bus error during dma */ 53 /* bit 6 reflects interrupt enable state */ 54 #define IKCSR_READY 0x0080 /* device ready for next command */ 55 /* bit 8 should be 0 */ 56 #define IKCSR_STATC 0x0200 /* status bit C */ 57 #define IKCSR_STATB 0x0400 /* status bit B */ 58 #define IKCSR_STATA 0x0800 /* status bit A */ 59 #define IKCSR_PERR 0x1000 /* parity error during pi/o or dma */ 60 #define IKCSR_ATTN 0x2000 /* current state of attention bit */ 61 #define IKCSR_ATTF 0x4000 /* latched attention t-f transition */ 62 #define IKCSR_DMAF 0x8000 /* dma completed or terminated */ 63 64 #define IKCSR_BITS \ 65 "\020\1DEV\2FNC1\3FNC2\4FNC3\5TIMO\6BERR\7IENA\10READY\12STATC\13STATB\14STATA\ 66 \15PERR\16ATTN\17ATTF\20DMAF" 67 68 /* 69 * Pulse command register definitions (write-only). 70 */ 71 #define IKPULSE_GO 0x0001 /* enable dma */ 72 #define IKPULSE_FNC2 0x0004 /* pulse function bit 1 */ 73 #define IKPULSE_RIENA 0x0020 /* reset IKCSR_IENA */ 74 #define IKPULSE_SIENA 0x0040 /* set IKCSR_IENA */ 75 #define IKPULSE_CYCL 0x0100 /* force dma to cycle */ 76 #define IKPULSE_MCLR 0x1000 /* initialize interface */ 77 #define IKPULSE_RPERR 0x2000 /* reset IKCSR_PERR */ 78 #define IKPULSE_RATTF 0x4000 /* reset IKCSR_ATTF */ 79 #define IKPULSE_RDMAF 0x8000 /* reset IKCSR_DMAF */ 80