1 /* $OpenBSD: ncr53c9xreg.h,v 1.1 1997/02/27 13:57:23 briggs Exp $ */ 2 /* $NetBSD: ncr53c9xreg.h,v 1.1 1997/02/27 01:12:08 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1994 Peter Galbavy. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Peter Galbavy. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Register addresses, relative to some base address 35 */ 36 37 #define NCR_TCL 0x00 /* RW - Transfer Count Low */ 38 #define NCR_TCM 0x01 /* RW - Transfer Count Mid */ 39 #define NCR_TCH 0x0e /* RW - Transfer Count High */ 40 /* NOT on 53C90 */ 41 42 #define NCR_FIFO 0x02 /* RW - FIFO data */ 43 44 #define NCR_CMD 0x03 /* RW - Command (2 deep) */ 45 #define NCRCMD_DMA 0x80 /* DMA Bit */ 46 #define NCRCMD_NOP 0x00 /* No Operation */ 47 #define NCRCMD_FLUSH 0x01 /* Flush FIFO */ 48 #define NCRCMD_RSTCHIP 0x02 /* Reset Chip */ 49 #define NCRCMD_RSTSCSI 0x03 /* Reset SCSI Bus */ 50 #define NCRCMD_RESEL 0x40 /* Reselect Sequence */ 51 #define NCRCMD_SELNATN 0x41 /* Select without ATN */ 52 #define NCRCMD_SELATN 0x42 /* Select with ATN */ 53 #define NCRCMD_SELATNS 0x43 /* Select with ATN & Stop */ 54 #define NCRCMD_ENSEL 0x44 /* Enable (Re)Selection */ 55 #define NCRCMD_DISSEL 0x45 /* Disable (Re)Selection */ 56 #define NCRCMD_SELATN3 0x46 /* Select with ATN3 */ 57 #define NCRCMD_RESEL3 0x47 /* Reselect3 Sequence */ 58 #define NCRCMD_SNDMSG 0x20 /* Send Message */ 59 #define NCRCMD_SNDSTAT 0x21 /* Send Status */ 60 #define NCRCMD_SNDDATA 0x22 /* Send Data */ 61 #define NCRCMD_DISCSEQ 0x23 /* Disconnect Sequence */ 62 #define NCRCMD_TERMSEQ 0x24 /* Terminate Sequence */ 63 #define NCRCMD_TCCS 0x25 /* Target Command Comp Seq */ 64 #define NCRCMD_DISC 0x27 /* Disconnect */ 65 #define NCRCMD_RECMSG 0x28 /* Receive Message */ 66 #define NCRCMD_RECCMD 0x29 /* Receive Command */ 67 #define NCRCMD_RECDATA 0x2a /* Receive Data */ 68 #define NCRCMD_RECCSEQ 0x2b /* Receive Command Sequence*/ 69 #define NCRCMD_ABORT 0x04 /* Target Abort DMA */ 70 #define NCRCMD_TRANS 0x10 /* Transfer Information */ 71 #define NCRCMD_ICCS 0x11 /* Initiator Cmd Comp Seq */ 72 #define NCRCMD_MSGOK 0x12 /* Message Accepted */ 73 #define NCRCMD_TRPAD 0x18 /* Transfer Pad */ 74 #define NCRCMD_SETATN 0x1a /* Set ATN */ 75 #define NCRCMD_RSTATN 0x1b /* Reset ATN */ 76 77 #define NCR_STAT 0x04 /* RO - Status */ 78 #define NCRSTAT_INT 0x80 /* Interrupt */ 79 #define NCRSTAT_GE 0x40 /* Gross Error */ 80 #define NCRSTAT_PE 0x20 /* Parity Error */ 81 #define NCRSTAT_TC 0x10 /* Terminal Count */ 82 #define NCRSTAT_VGC 0x08 /* Valid Group Code */ 83 #define NCRSTAT_PHASE 0x07 /* Phase bits */ 84 85 #define NCR_SELID 0x04 /* WO - Select/Reselect Bus ID */ 86 87 #define NCR_INTR 0x05 /* RO - Interrupt */ 88 #define NCRINTR_SBR 0x80 /* SCSI Bus Reset */ 89 #define NCRINTR_ILL 0x40 /* Illegal Command */ 90 #define NCRINTR_DIS 0x20 /* Disconnect */ 91 #define NCRINTR_BS 0x10 /* Bus Service */ 92 #define NCRINTR_FC 0x08 /* Function Complete */ 93 #define NCRINTR_RESEL 0x04 /* Reselected */ 94 #define NCRINTR_SELATN 0x02 /* Select with ATN */ 95 #define NCRINTR_SEL 0x01 /* Selected */ 96 97 #define NCR_TIMEOUT 0x05 /* WO - Select/Reselect Timeout */ 98 99 #define NCR_STEP 0x06 /* RO - Sequence Step */ 100 #define NCRSTEP_MASK 0x07 /* the last 3 bits */ 101 #define NCRSTEP_DONE 0x04 /* command went out */ 102 103 #define NCR_SYNCTP 0x06 /* WO - Synch Transfer Period */ 104 /* Default 5 (53C9X) */ 105 106 #define NCR_FFLAG 0x07 /* RO - FIFO Flags */ 107 #define NCRFIFO_SS 0xe0 /* Sequence Step (Dup) */ 108 #define NCRFIFO_FF 0x1f /* Bytes in FIFO */ 109 110 #define NCR_SYNCOFF 0x07 /* WO - Synch Offset */ 111 /* 0 = ASYNC */ 112 /* 1 - 15 = SYNC bytes */ 113 114 #define NCR_CFG1 0x08 /* RW - Configuration #1 */ 115 #define NCRCFG1_SLOW 0x80 /* Slow Cable Mode */ 116 #define NCRCFG1_SRR 0x40 /* SCSI Reset Rep Int Dis */ 117 #define NCRCFG1_PTEST 0x20 /* Parity Test Mod */ 118 #define NCRCFG1_PARENB 0x10 /* Enable Parity Check */ 119 #define NCRCFG1_CTEST 0x08 /* Enable Chip Test */ 120 #define NCRCFG1_BUSID 0x07 /* Bus ID */ 121 122 #define NCR_CCF 0x09 /* WO - Clock Conversion Factor */ 123 /* 0 = 35.01 - 40Mhz */ 124 /* NEVER SET TO 1 */ 125 /* 2 = 10Mhz */ 126 /* 3 = 10.01 - 15Mhz */ 127 /* 4 = 15.01 - 20Mhz */ 128 /* 5 = 20.01 - 25Mhz */ 129 /* 6 = 25.01 - 30Mhz */ 130 /* 7 = 30.01 - 35Mhz */ 131 132 #define NCR_TEST 0x0a /* WO - Test (Chip Test Only) */ 133 134 #define NCR_CFG2 0x0b /* RW - Configuration #2 */ 135 #define NCRCFG2_RSVD 0xa0 /* reserved */ 136 #define NCRCFG2_FE 0x40 /* Features Enable */ 137 #define NCRCFG2_DREQ 0x10 /* DREQ High Impedance */ 138 #define NCRCFG2_SCSI2 0x08 /* SCSI-2 Enable */ 139 #define NCRCFG2_BPA 0x04 /* Target Bad Parity Abort */ 140 #define NCRCFG2_RPE 0x02 /* Register Parity Error */ 141 #define NCRCFG2_DPE 0x01 /* DMA Parity Error */ 142 143 /* Config #3 only on 53C9X */ 144 #define NCR_CFG3 0x0c /* RW - Configuration #3 */ 145 #define NCRCFG3_RSVD 0xe0 /* reserved */ 146 #define NCRCFG3_IDM 0x10 /* ID Message Res Check */ 147 #define NCRCFG3_QTE 0x08 /* Queue Tag Enable */ 148 #define NCRCFG3_CDB 0x04 /* CDB 10-bytes OK */ 149 #define NCRCFG3_FSCSI 0x02 /* Fast SCSI */ 150 #define NCRCFG3_FCLK 0x01 /* Fast Clock (>25Mhz) */ 151