1 /* $OpenBSD: ncr53c9xreg.h,v 1.9 2003/10/21 18:58:49 jmc Exp $ */ 2 /* $NetBSD: ncr53c9xreg.h,v 1.4 1997/05/17 20:56:55 pk 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * Register addresses, relative to some base address 30 */ 31 32 #define NCR_TCL 0x00 /* RW - Transfer Count Low */ 33 #define NCR_TCM 0x01 /* RW - Transfer Count Mid */ 34 #define NCR_TCH 0x0e /* RW - Transfer Count High */ 35 /* NOT on 53C90 */ 36 37 #define NCR_FIFO 0x02 /* RW - FIFO data */ 38 39 #define NCR_CMD 0x03 /* RW - Command (2 deep) */ 40 #define NCRCMD_DMA 0x80 /* DMA Bit */ 41 #define NCRCMD_NOP 0x00 /* No Operation */ 42 #define NCRCMD_FLUSH 0x01 /* Flush FIFO */ 43 #define NCRCMD_RSTCHIP 0x02 /* Reset Chip */ 44 #define NCRCMD_RSTSCSI 0x03 /* Reset SCSI Bus */ 45 #define NCRCMD_RESEL 0x40 /* Reselect Sequence */ 46 #define NCRCMD_SELNATN 0x41 /* Select without ATN */ 47 #define NCRCMD_SELATN 0x42 /* Select with ATN */ 48 #define NCRCMD_SELATNS 0x43 /* Select with ATN & Stop */ 49 #define NCRCMD_ENSEL 0x44 /* Enable (Re)Selection */ 50 #define NCRCMD_DISSEL 0x45 /* Disable (Re)Selection */ 51 #define NCRCMD_SELATN3 0x46 /* Select with ATN3 */ 52 #define NCRCMD_RESEL3 0x47 /* Reselect3 Sequence */ 53 #define NCRCMD_SNDMSG 0x20 /* Send Message */ 54 #define NCRCMD_SNDSTAT 0x21 /* Send Status */ 55 #define NCRCMD_SNDDATA 0x22 /* Send Data */ 56 #define NCRCMD_DISCSEQ 0x23 /* Disconnect Sequence */ 57 #define NCRCMD_TERMSEQ 0x24 /* Terminate Sequence */ 58 #define NCRCMD_TCCS 0x25 /* Target Command Comp Seq */ 59 #define NCRCMD_DISC 0x27 /* Disconnect */ 60 #define NCRCMD_RECMSG 0x28 /* Receive Message */ 61 #define NCRCMD_RECCMD 0x29 /* Receive Command */ 62 #define NCRCMD_RECDATA 0x2a /* Receive Data */ 63 #define NCRCMD_RECCSEQ 0x2b /* Receive Command Sequence*/ 64 #define NCRCMD_ABORT 0x04 /* Target Abort DMA */ 65 #define NCRCMD_TRANS 0x10 /* Transfer Information */ 66 #define NCRCMD_ICCS 0x11 /* Initiator Cmd Comp Seq */ 67 #define NCRCMD_MSGOK 0x12 /* Message Accepted */ 68 #define NCRCMD_TRPAD 0x18 /* Transfer Pad */ 69 #define NCRCMD_SETATN 0x1a /* Set ATN */ 70 #define NCRCMD_RSTATN 0x1b /* Reset ATN */ 71 72 #define NCR_STAT 0x04 /* RO - Status */ 73 #define NCRSTAT_INT 0x80 /* Interrupt */ 74 #define NCRSTAT_GE 0x40 /* Gross Error */ 75 #define NCRSTAT_PE 0x20 /* Parity Error */ 76 #define NCRSTAT_TC 0x10 /* Terminal Count */ 77 #define NCRSTAT_VGC 0x08 /* Valid Group Code */ 78 #define NCRSTAT_PHASE 0x07 /* Phase bits */ 79 80 #define NCR_SELID 0x04 /* WO - Select/Reselect Bus ID */ 81 #define NCR_BUSID_HME 0x10 /* XXX HME reselect ID */ 82 #define NCR_BUSID_HME32 0x40 /* XXX HME to select more than 16 */ 83 84 #define NCR_INTR 0x05 /* RO - Interrupt */ 85 #define NCRINTR_SBR 0x80 /* SCSI Bus Reset */ 86 #define NCRINTR_ILL 0x40 /* Illegal Command */ 87 #define NCRINTR_DIS 0x20 /* Disconnect */ 88 #define NCRINTR_BS 0x10 /* Bus Service */ 89 #define NCRINTR_FC 0x08 /* Function Complete */ 90 #define NCRINTR_RESEL 0x04 /* Reselected */ 91 #define NCRINTR_SELATN 0x02 /* Select with ATN */ 92 #define NCRINTR_SEL 0x01 /* Selected */ 93 94 #define NCR_TIMEOUT 0x05 /* WO - Select/Reselect Timeout */ 95 96 #define NCR_STEP 0x06 /* RO - Sequence Step */ 97 #define NCRSTEP_MASK 0x07 /* the last 3 bits */ 98 #define NCRSTEP_DONE 0x04 /* command went out */ 99 100 #define NCR_SYNCTP 0x06 /* WO - Synch Transfer Period */ 101 /* Default 5 (53C9X) */ 102 103 #define NCR_FFLAG 0x07 /* RO - FIFO Flags */ 104 #define NCRFIFO_SS 0xe0 /* Sequence Step (Dup) */ 105 #define NCRFIFO_FF 0x1f /* Bytes in FIFO */ 106 107 #define NCR_SYNCOFF 0x07 /* WO - Synch Offset */ 108 /* 0 = ASYNC */ 109 /* 1 - 15 = SYNC bytes */ 110 111 #define NCR_CFG1 0x08 /* RW - Configuration #1 */ 112 #define NCRCFG1_SLOW 0x80 /* Slow Cable Mode */ 113 #define NCRCFG1_SRR 0x40 /* SCSI Reset Rep Int Dis */ 114 #define NCRCFG1_PTEST 0x20 /* Parity Test Mod */ 115 #define NCRCFG1_PARENB 0x10 /* Enable Parity Check */ 116 #define NCRCFG1_CTEST 0x08 /* Enable Chip Test */ 117 #define NCRCFG1_BUSID 0x07 /* Bus ID */ 118 119 #define NCR_CCF 0x09 /* WO - Clock Conversion Factor */ 120 /* 0 = 35.01 - 40MHz */ 121 /* NEVER SET TO 1 */ 122 /* 2 = 10MHz */ 123 /* 3 = 10.01 - 15MHz */ 124 /* 4 = 15.01 - 20MHz */ 125 /* 5 = 20.01 - 25MHz */ 126 /* 6 = 25.01 - 30MHz */ 127 /* 7 = 30.01 - 35MHz */ 128 129 #define NCR_TEST 0x0a /* WO - Test (Chip Test Only) */ 130 131 #define NCR_CFG2 0x0b /* RW - Configuration #2 */ 132 #define NCRCFG2_RSVD 0xa0 /* reserved */ 133 #define NCRCFG2_FE 0x40 /* Features Enable */ 134 #define NCRCFG2_DREQ 0x10 /* DREQ High Impedance */ 135 #define NCRCFG2_SCSI2 0x08 /* SCSI-2 Enable */ 136 #define NCRCFG2_BPA 0x04 /* Target Bad Parity Abort */ 137 #define NCRCFG2_RPE 0x02 /* Register Parity Error */ 138 #define NCRCFG2_DPE 0x01 /* DMA Parity Error */ 139 #define NCRCFG2_HMEFE 0x10 /* HME feature enable */ 140 #define NCRCFG2_HME32 0x80 /* HME 32 extended */ 141 142 /* Config #3 only on 53C9X */ 143 #define NCR_CFG3 0x0c /* RW - Configuration #3 */ 144 #define NCRCFG3_RSVD 0xe0 /* reserved */ 145 #define NCRCFG3_IDM 0x10 /* ID Message Res Check */ 146 #define NCRCFG3_QTE 0x08 /* Queue Tag Enable */ 147 #define NCRCFG3_CDB 0x04 /* CDB 10-bytes OK */ 148 #define NCRCFG3_FSCSI 0x02 /* Fast SCSI */ 149 #define NCRCFG3_FCLK 0x01 /* Fast Clock (>25MHz) */ 150 151 /* 152 * For some unknown reason, the ESP406/FAS408 looks like every 153 * other ncr53c9x, except for configuration #3 register. At any 154 * rate, if you're dealing with these chips, you need to use these 155 * defines instead. 156 */ 157 158 /* Config #3 different on ESP406/FAS408 */ 159 #define NCR_ESPCFG3 0x0c /* RW - Configuration #3 */ 160 #define NCRESPCFG3_IDM 0x80 /* ID Message Res Check */ 161 #define NCRESPCFG3_QTE 0x40 /* Queue Tag Enable */ 162 #define NCRESPCFG3_CDB 0x20 /* CDB 10-bytes OK */ 163 #define NCRESPCFG3_FSCSI 0x10 /* Fast SCSI */ 164 #define NCRESPCFG3_SRESB 0x08 /* Save Residual Byte */ 165 #define NCRESPCFG3_FCLK 0x04 /* Fast Clock (>25MHz) */ 166 #define NCRESPCFG3_ADMA 0x02 /* Alternate DMA Mode */ 167 #define NCRESPCFG3_T8M 0x01 /* Threshold 8 Mode */ 168 169 /* Config #3 also different on NCR53CF9x/FAS216 */ 170 #define NCR_F9XCFG3 0x0c /* RW - Configuration #3 */ 171 #define NCRF9XCFG3_IDM 0x80 /* ID Message Res Check */ 172 #define NCRF9XCFG3_QTE 0x40 /* Queue Tag Enable */ 173 #define NCRF9XCFG3_CDB 0x20 /* CDB 10-bytes OK */ 174 #define NCRF9XCFG3_FSCSI 0x10 /* Fast SCSI */ 175 #define NCRF9XCFG3_FCLK 0x08 /* Fast Clock (>25MHz) */ 176 #define NCRF9XCFG3_SRESB 0x04 /* Save Residual Byte */ 177 #define NCRF9XCFG3_ADMA 0x02 /* Alternate DMA Mode */ 178 #define NCRF9XCFG3_T8M 0x01 /* Threshold 8 Mode */ 179 180 /* Config #3 on FAS366 */ 181 #define NCRFASCFG3_OBAUTO 0x80 /* auto push odd-byte to dma */ 182 #define NCRFASCFG3_EWIDE 0x40 /* Enable Wide-SCSI */ 183 #define NCRFASCFG3_IDBIT3 0x20 /* Bit 3 of HME SCSI-ID */ 184 #define NCRFASCFG3_IDRESCHK 0x10 /* ID message checking */ 185 #define NCRFASCFG3_QUENB 0x08 /* 3-byte msg support */ 186 #define NCRFASCFG3_CDB10 0x04 /* group 2 scsi-2 support */ 187 #define NCRFASCFG3_FASTSCSI 0x02 /* 10 MB/S fast scsi mode */ 188 #define NCRFASCFG3_FASTCLK 0x01 /* fast clock mode */ 189 190 /* Config #4 only on ESP406/FAS408 */ 191 #define NCR_CFG4 0x0d /* RW - Configuration #4 */ 192 #define NCRCFG4_CRS1 0x80 /* Select register set #1 */ 193 #define NCRCFG4_RSVD 0x7b /* reserved */ 194 #define NCRCFG4_ACTNEG 0x04 /* Active negation */ 195 196 /* 197 The following registers are only on the ESP406/FAS408. The 198 documentation refers to them as "Control Register Set #1". 199 These are the registers that are visible when bit 7 of 200 register 0x0d is set. This bit is common to both register sets. 201 */ 202 203 #define NCR_JMP 0x00 /* RO - Jumper Sense Register */ 204 #define NCRJMP_RSVD 0xc0 /* reserved */ 205 #define NCRJMP_ROMSZ 0x20 /* ROM Size 1=16K, 0=32K */ 206 #define NCRJMP_J4 0x10 /* Jumper #4 */ 207 #define NCRJMP_J3 0x08 /* Jumper #3 */ 208 #define NCRJMP_J2 0x04 /* Jumper #2 */ 209 #define NCRJMP_J1 0x02 /* Jumper #1 */ 210 #define NCRJMP_J0 0x01 /* Jumper #0 */ 211 212 #define NCR_PIOFIFO 0x04 /* WO - PIO FIFO, 4 bytes deep */ 213 214 #define NCR_PSTAT 0x08 /* RW - PIO Status Register */ 215 #define NCRPSTAT_PERR 0x80 /* PIO Error */ 216 #define NCRPSTAT_SIRQ 0x40 /* Active High of SCSI IRQ */ 217 #define NCRPSTAT_ATAI 0x20 /* ATA IRQ */ 218 #define NCRPSTAT_FEMPT 0x10 /* PIO FIFO Empty */ 219 #define NCRPSTAT_F13 0x08 /* PIO FIFO 1/3 */ 220 #define NCRPSTAT_F23 0x04 /* PIO FIFO 2/3 */ 221 #define NCRPSTAT_FFULL 0x02 /* PIO FIFO Full */ 222 #define NCRPSTAT_PIOM 0x01 /* PIO/DMA Mode */ 223 224 #define NCR_PIOI 0x0b /* RW - PIO Interrupt Enable */ 225 #define NCRPIOI_RSVD 0xe0 /* reserved */ 226 #define NCRPIOI_EMPTY 0x10 /* IRQ When Empty */ 227 #define NCRPIOI_13 0x08 /* IRQ When 1/3 */ 228 #define NCRPIOI_23 0x04 /* IRQ When 2/3 */ 229 #define NCRPIOI_FULL 0x02 /* IRQ When Full */ 230 #define NCRPIOI_FINV 0x01 /* Flag Invert */ 231 232 #define NCR_CFG5 0x0d /* RW - Configuration #5 */ 233 #define NCRCFG5_CRS1 0x80 /* Select Register Set #1 */ 234 #define NCRCFG5_SRAM 0x40 /* SRAM Memory Map */ 235 #define NCRCFG5_AADDR 0x20 /* Auto Address */ 236 #define NCRCFG5_PTRINC 0x10 /* Pointer Increment */ 237 #define NCRCFG5_LOWPWR 0x08 /* Low Power Mode */ 238 #define NCRCFG5_SINT 0x04 /* SCSI Interrupt Enable */ 239 #define NCRCFG5_INTP 0x02 /* INT Polarity */ 240 #define NCRCFG5_AINT 0x01 /* ATA Interrupt Enable */ 241 242 #define NCR_SIGNTR 0x0e /* RO - Signature */ 243 244 /* Am53c974 Config #3 */ 245 #define NCR_AMDCFG3 0x0c /* RW - Configuration #3 */ 246 #define NCRAMDCFG3_IDM 0x80 /* ID Message Res Check */ 247 #define NCRAMDCFG3_QTE 0x40 /* Queue Tag Enable */ 248 #define NCRAMDCFG3_CDB 0x20 /* CDB 10-bytes OK */ 249 #define NCRAMDCFG3_FSCSI 0x10 /* Fast SCSI */ 250 #define NCRAMDCFG3_FCLK 0x08 /* Fast Clock (40MHz) */ 251 #define NCRAMDCFG3_RSVD 0x07 /* Reserved */ 252 253 /* Am53c974 Config #4 */ 254 #define NCR_AMDCFG4 0x0d /* RW - Configuration #4 */ 255 #define NCRAMDCFG4_GE 0xc0 /* Glitch Eater */ 256 #define NCRAMDCFG4_GE12NS 0x00 /* Signal window 12ns */ 257 #define NCRAMDCFG4_GE25NS 0x80 /* Signal window 25ns */ 258 #define NCRAMDCFG4_GE35NS 0x40 /* Signal window 35ns */ 259 #define NCRAMDCFG4_GE0NS 0xc0 /* Signal window 0ns */ 260 #define NCRAMDCFG4_PWD 0x20 /* Reduced power feature */ 261 #define NCRAMDCFG4_RSVD 0x13 /* Reserved */ 262 #define NCRAMDCFG4_RAE 0x08 /* Active neg. REQ/ACK */ 263 #define NCRAMDCFG4_RADE 0x04 /* Active neg. REQ/ACK/DAT */ 264 265 /* 266 * FAS366 267 */ 268 #define NCR_RCL NCR_TCH /* Recommand counter low */ 269 #define NCR_RCH 0xf /* Recommand counter high */ 270 #define NCR_UID NCR_RCL /* fas366 part-uniq id */ 271 272 /* status register #2 definitions (read only) */ 273 #define NCR_STAT2 NCR_CCF 274 #define FAS_STAT2_SEQCNT 0x01 /* Sequence counter bit 7-3 enabled */ 275 #define FAS_STAT2_FLATCHED 0x02 /* FIFO flags register latched */ 276 #define FAS_STAT2_CLATCHED 0x04 /* Xfer cntr & recommand ctr latched */ 277 #define FAS_STAT2_CACTIVE 0x08 /* Command register is active */ 278 #define FAS_STAT2_SCSI16 0x10 /* SCSI interface is wide */ 279 #define FAS_STAT2_ISHUTTLE 0x20 /* FIFO Top register contains 1 byte */ 280 #define FAS_STAT2_OSHUTTLE 0x40 /* next byte from FIFO is MSB */ 281 #define FAS_STAT2_EMPTY 0x80 /* FIFO is empty */ 282