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/* $OpenBSD: ncr53c9xreg.h,v 1.1 1997/02/27 13:57:23 briggs Exp $ */
/* $NetBSD: ncr53c9xreg.h,v 1.1 1997/02/27 01:12:08 thorpej Exp $ */
/*
* Copyright (c) 1994 Peter Galbavy. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Peter Galbavy.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Register addresses, relative to some base address
*/
#define NCR_TCL 0x00 /* RW - Transfer Count Low */
#define NCR_TCM 0x01 /* RW - Transfer Count Mid */
#define NCR_TCH 0x0e /* RW - Transfer Count High */
/* NOT on 53C90 */
#define NCR_FIFO 0x02 /* RW - FIFO data */
#define NCR_CMD 0x03 /* RW - Command (2 deep) */
#define NCRCMD_DMA 0x80 /* DMA Bit */
#define NCRCMD_NOP 0x00 /* No Operation */
#define NCRCMD_FLUSH 0x01 /* Flush FIFO */
#define NCRCMD_RSTCHIP 0x02 /* Reset Chip */
#define NCRCMD_RSTSCSI 0x03 /* Reset SCSI Bus */
#define NCRCMD_RESEL 0x40 /* Reselect Sequence */
#define NCRCMD_SELNATN 0x41 /* Select without ATN */
#define NCRCMD_SELATN 0x42 /* Select with ATN */
#define NCRCMD_SELATNS 0x43 /* Select with ATN & Stop */
#define NCRCMD_ENSEL 0x44 /* Enable (Re)Selection */
#define NCRCMD_DISSEL 0x45 /* Disable (Re)Selection */
#define NCRCMD_SELATN3 0x46 /* Select with ATN3 */
#define NCRCMD_RESEL3 0x47 /* Reselect3 Sequence */
#define NCRCMD_SNDMSG 0x20 /* Send Message */
#define NCRCMD_SNDSTAT 0x21 /* Send Status */
#define NCRCMD_SNDDATA 0x22 /* Send Data */
#define NCRCMD_DISCSEQ 0x23 /* Disconnect Sequence */
#define NCRCMD_TERMSEQ 0x24 /* Terminate Sequence */
#define NCRCMD_TCCS 0x25 /* Target Command Comp Seq */
#define NCRCMD_DISC 0x27 /* Disconnect */
#define NCRCMD_RECMSG 0x28 /* Receive Message */
#define NCRCMD_RECCMD 0x29 /* Receive Command */
#define NCRCMD_RECDATA 0x2a /* Receive Data */
#define NCRCMD_RECCSEQ 0x2b /* Receive Command Sequence*/
#define NCRCMD_ABORT 0x04 /* Target Abort DMA */
#define NCRCMD_TRANS 0x10 /* Transfer Information */
#define NCRCMD_ICCS 0x11 /* Initiator Cmd Comp Seq */
#define NCRCMD_MSGOK 0x12 /* Message Accepted */
#define NCRCMD_TRPAD 0x18 /* Transfer Pad */
#define NCRCMD_SETATN 0x1a /* Set ATN */
#define NCRCMD_RSTATN 0x1b /* Reset ATN */
#define NCR_STAT 0x04 /* RO - Status */
#define NCRSTAT_INT 0x80 /* Interrupt */
#define NCRSTAT_GE 0x40 /* Gross Error */
#define NCRSTAT_PE 0x20 /* Parity Error */
#define NCRSTAT_TC 0x10 /* Terminal Count */
#define NCRSTAT_VGC 0x08 /* Valid Group Code */
#define NCRSTAT_PHASE 0x07 /* Phase bits */
#define NCR_SELID 0x04 /* WO - Select/Reselect Bus ID */
#define NCR_INTR 0x05 /* RO - Interrupt */
#define NCRINTR_SBR 0x80 /* SCSI Bus Reset */
#define NCRINTR_ILL 0x40 /* Illegal Command */
#define NCRINTR_DIS 0x20 /* Disconnect */
#define NCRINTR_BS 0x10 /* Bus Service */
#define NCRINTR_FC 0x08 /* Function Complete */
#define NCRINTR_RESEL 0x04 /* Reselected */
#define NCRINTR_SELATN 0x02 /* Select with ATN */
#define NCRINTR_SEL 0x01 /* Selected */
#define NCR_TIMEOUT 0x05 /* WO - Select/Reselect Timeout */
#define NCR_STEP 0x06 /* RO - Sequence Step */
#define NCRSTEP_MASK 0x07 /* the last 3 bits */
#define NCRSTEP_DONE 0x04 /* command went out */
#define NCR_SYNCTP 0x06 /* WO - Synch Transfer Period */
/* Default 5 (53C9X) */
#define NCR_FFLAG 0x07 /* RO - FIFO Flags */
#define NCRFIFO_SS 0xe0 /* Sequence Step (Dup) */
#define NCRFIFO_FF 0x1f /* Bytes in FIFO */
#define NCR_SYNCOFF 0x07 /* WO - Synch Offset */
/* 0 = ASYNC */
/* 1 - 15 = SYNC bytes */
#define NCR_CFG1 0x08 /* RW - Configuration #1 */
#define NCRCFG1_SLOW 0x80 /* Slow Cable Mode */
#define NCRCFG1_SRR 0x40 /* SCSI Reset Rep Int Dis */
#define NCRCFG1_PTEST 0x20 /* Parity Test Mod */
#define NCRCFG1_PARENB 0x10 /* Enable Parity Check */
#define NCRCFG1_CTEST 0x08 /* Enable Chip Test */
#define NCRCFG1_BUSID 0x07 /* Bus ID */
#define NCR_CCF 0x09 /* WO - Clock Conversion Factor */
/* 0 = 35.01 - 40Mhz */
/* NEVER SET TO 1 */
/* 2 = 10Mhz */
/* 3 = 10.01 - 15Mhz */
/* 4 = 15.01 - 20Mhz */
/* 5 = 20.01 - 25Mhz */
/* 6 = 25.01 - 30Mhz */
/* 7 = 30.01 - 35Mhz */
#define NCR_TEST 0x0a /* WO - Test (Chip Test Only) */
#define NCR_CFG2 0x0b /* RW - Configuration #2 */
#define NCRCFG2_RSVD 0xa0 /* reserved */
#define NCRCFG2_FE 0x40 /* Features Enable */
#define NCRCFG2_DREQ 0x10 /* DREQ High Impedance */
#define NCRCFG2_SCSI2 0x08 /* SCSI-2 Enable */
#define NCRCFG2_BPA 0x04 /* Target Bad Parity Abort */
#define NCRCFG2_RPE 0x02 /* Register Parity Error */
#define NCRCFG2_DPE 0x01 /* DMA Parity Error */
/* Config #3 only on 53C9X */
#define NCR_CFG3 0x0c /* RW - Configuration #3 */
#define NCRCFG3_RSVD 0xe0 /* reserved */
#define NCRCFG3_IDM 0x10 /* ID Message Res Check */
#define NCRCFG3_QTE 0x08 /* Queue Tag Enable */
#define NCRCFG3_CDB 0x04 /* CDB 10-bytes OK */
#define NCRCFG3_FSCSI 0x02 /* Fast SCSI */
#define NCRCFG3_FCLK 0x01 /* Fast Clock (>25Mhz) */
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