/* $OpenBSD: osiopreg.h,v 1.5 2005/11/21 21:52:47 miod Exp $ */ /* $NetBSD: osiopreg.h,v 1.1 2001/04/30 04:47:51 tsutsui Exp $ */ /* * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Van Jacobson of Lawrence Berkeley Laboratory. * * 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. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)siopreg.h 7.3 (Berkeley) 2/5/91 */ /* * NCR 53C710 SCSI interface hardware description. * * From the Mach scsi driver for the 53C710 and amiga siop driver */ /* byte lane definitions */ #if BYTE_ORDER == LITTLE_ENDIAN #define BL0 0 #define BL1 1 #define BL2 2 #define BL3 3 #else #define BL0 3 #define BL1 2 #define BL2 1 #define BL3 0 #endif #define OSIOP_SCNTL0 (0x00+BL0) /* rw: SCSI control reg 0 */ #define OSIOP_SCNTL1 (0x00+BL1) /* rw: SCSI control reg 1 */ #define OSIOP_SDID (0x00+BL2) /* rw: SCSI destination ID */ #define OSIOP_SIEN (0x00+BL3) /* rw: SCSI interrupt enable */ #define OSIOP_SCID (0x04+BL0) /* rw: SCSI Chip ID reg */ #define OSIOP_SXFER (0x04+BL1) /* rw: SCSI Transfer reg */ #define OSIOP_SODL (0x04+BL2) /* rw: SCSI Output Data Latch */ #define OSIOP_SOCL (0x04+BL3) /* rw: SCSI Output Control Latch */ #define OSIOP_SFBR (0x08+BL0) /* ro: SCSI First Byte Received */ #define OSIOP_SIDL (0x08+BL1) /* ro: SCSI Input Data Latch */ #define OSIOP_SBDL (0x08+BL2) /* ro: SCSI Bus Data Lines */ #define OSIOP_SBCL (0x08+BL3) /* rw: SCSI Bus Control Lines */ #define OSIOP_DSTAT (0x0c+BL0) /* ro: DMA status */ #define OSIOP_SSTAT0 (0x0c+BL1) /* ro: SCSI status reg 0 */ #define OSIOP_SSTAT1 (0x0c+BL2) /* ro: SCSI status reg 1 */ #define OSIOP_SSTAT2 (0x0c+BL3) /* ro: SCSI status reg 2 */ #define OSIOP_DSA 0x10 /* rw: Data Structure Address */ #define OSIOP_CTEST0 (0x14+BL0) /* ro: Chip test register 0 */ #define OSIOP_CTEST1 (0x14+BL1) /* ro: Chip test register 1 */ #define OSIOP_CTEST2 (0x14+BL2) /* ro: Chip test register 2 */ #define OSIOP_CTEST3 (0x14+BL3) /* ro: Chip test register 3 */ #define OSIOP_CTEST4 (0x18+BL0) /* rw: Chip test register 4 */ #define OSIOP_CTEST5 (0x18+BL1) /* rw: Chip test register 5 */ #define OSIOP_CTEST6 (0x18+BL2) /* rw: Chip test register 6 */ #define OSIOP_CTEST7 (0x18+BL3) /* rw: Chip test register 7 */ #define OSIOP_TEMP 0x1c /* rw: Temporary Stack reg */ #define OSIOP_DFIFO (0x20+BL0) /* rw: DMA FIFO */ #define OSIOP_ISTAT (0x20+BL1) /* rw: Interrupt Status reg */ #define OSIOP_CTEST8 (0x20+BL2) /* rw: Chip test register 8 */ #define OSIOP_LCRC (0x20+BL3) /* rw: LCRC value */ #define OSIOP_DBC 0x24 /* rw: DMA Counter reg (longword) */ #define OSIOP_DBC0 (0x24+BL0) /* rw: DMA Byte Counter reg 0 */ #define OSIOP_DBC1 (0x24+BL1) /* rw: DMA Byte Counter reg 1 */ #define OSIOP_DBC2 (0x24+BL2) /* rw: DMA Byte Counter reg 2 */ #define OSIOP_DCMD (0x24+BL3) /* rw: DMA Command Register */ #define OSIOP_DNAD 0x28 /* rw: DMA Next Data Address */ #define OSIOP_DSP 0x2c /* rw: DMA SCRIPTS Pointer reg */ #define OSIOP_DSPS 0x30 /* rw: DMA SCRIPTS Pointer Save reg */ #define OSIOP_SCRATCH 0x34 /* rw: Scratch register */ #define OSIOP_DMODE (0x38+BL0) /* rw: DMA Mode reg */ #define OSIOP_DIEN (0x38+BL1) /* rw: DMA Interrupt Enable */ #define OSIOP_DWT (0x38+BL2) /* rw: DMA Watchdog Timer */ #define OSIOP_DCNTL (0x38+BL3) /* rw: DMA Control reg */ #define OSIOP_ADDER 0x3c /* ro: Adder Sum Output */ #define OSIOP_NREGS 0x40 /* * Register defines */ /* Scsi control register 0 (scntl0) */ #define OSIOP_SCNTL0_ARB 0xc0 /* Arbitration mode */ #define OSIOP_ARB_SIMPLE 0x00 #define OSIOP_ARB_FULL 0xc0 #define OSIOP_SCNTL0_START 0x20 /* Start Sequence */ #define OSIOP_SCNTL0_WATN 0x10 /* (Select) With ATN */ #define OSIOP_SCNTL0_EPC 0x08 /* Enable Parity Checking */ #define OSIOP_SCNTL0_EPG 0x04 /* Enable Parity Generation */ #define OSIOP_SCNTL0_AAP 0x02 /* Assert ATN on Parity Error */ #define OSIOP_SCNTL0_TRG 0x01 /* Target Mode */ /* Scsi control register 1 (scntl1) */ #define OSIOP_SCNTL1_EXC 0x80 /* Extra Clock Cycle of data setup */ #define OSIOP_SCNTL1_ADB 0x40 /* Assert Data Bus */ #define OSIOP_SCNTL1_ESR 0x20 /* Enable Selection/Reselection */ #define OSIOP_SCNTL1_CON 0x10 /* Connected */ #define OSIOP_SCNTL1_RST 0x08 /* Assert RST */ #define OSIOP_SCNTL1_AESP 0x04 /* Assert even SCSI parity */ #define OSIOP_SCNTL1_PAR 0x04 /* Force bad Parity */ #define OSIOP_SCNTL1_RES0 0x02 /* Reserved */ #define OSIOP_SCNTL1_RES1 0x01 /* Reserved */ /* Scsi interrupt enable register (sien) */ #define OSIOP_SIEN_M_A 0x80 /* Phase Mismatch or ATN active */ #define OSIOP_SIEN_FCMP 0x40 /* Function Complete */ #define OSIOP_SIEN_STO 0x20 /* (Re)Selection timeout */ #define OSIOP_SIEN_SEL 0x10 /* (Re)Selected */ #define OSIOP_SIEN_SGE 0x08 /* SCSI Gross Error */ #define OSIOP_SIEN_UDC 0x04 /* Unexpected Disconnect */ #define OSIOP_SIEN_RST 0x02 /* RST asserted */ #define OSIOP_SIEN_PAR 0x01 /* Parity Error */ /* Scsi chip ID (scid) */ #define OSIOP_SCID_VALUE(i) (1 << (i)) /* Scsi transfer register (sxfer) */ #define OSIOP_SXFER_DHP 0x80 /* Disable Halt on Parity error/ ATN asserted */ #define OSIOP_SXFER_TP 0x70 /* Synch Transfer Period */ /* see specs for formulas: Period = TCP * (4 + XFERP ) TCP = 1 + CLK + 1..2; */ #define OSIOP_SXFER_MO 0x0f /* Synch Max Offset */ #define OSIOP_MAX_OFFSET 8 /* Scsi output data latch register (sodl) */ /* Scsi output control latch register (socl) */ #define OSIOP_REQ 0x80 /* SCSI signal asserted */ #define OSIOP_ACK 0x40 #define OSIOP_BSY 0x20 #define OSIOP_SEL 0x10 #define OSIOP_ATN 0x08 #define OSIOP_MSG 0x04 #define OSIOP_CD 0x02 #define OSIOP_IO 0x01 #define OSIOP_PHASE(x) ((x) & (OSIOP_MSG|OSIOP_CD|OSIOP_IO)) #define DATA_OUT_PHASE 0x00 #define DATA_IN_PHASE OSIOP_IO #define COMMAND_PHASE OSIOP_CD #define STATUS_PHASE (OSIOP_CD|OSIOP_IO) #define MSG_OUT_PHASE (OSIOP_MSG|OSIOP_CD) #define MSG_IN_PHASE (OSIOP_MSG|OSIOP_CD|OSIOP_IO) /* Scsi first byte received register (sfbr) */ /* Scsi input data latch register (sidl) */ /* Scsi bus data lines register (sbdl) */ /* Scsi bus control lines register (sbcl). Same as socl */ #define OSIOP_SBCL_SSCF1 0x02 /* wo */ #define OSIOP_SBCL_SSCF0 0x01 /* wo */ /* DMA status register (dstat) */ #define OSIOP_DSTAT_DFE 0x80 /* DMA FIFO empty */ #define OSIOP_DSTAT_RES 0x40 #define OSIOP_DSTAT_BF 0x20 /* Bus fault */ #define OSIOP_DSTAT_ABRT 0x10 /* Aborted */ #define OSIOP_DSTAT_SSI 0x08 /* SCRIPT Single Step */ #define OSIOP_DSTAT_SIR 0x04 /* SCRIPT Interrupt Instruction */ #define OSIOP_DSTAT_WTD 0x02 /* Watchdog Timeout Detected */ #define OSIOP_DSTAT_IID 0x01 /* Invalid Instruction Detected */ /* Scsi status register 0 (sstat0) */ #define OSIOP_SSTAT0_M_A 0x80 /* Phase Mismatch or ATN active */ #define OSIOP_SSTAT0_FCMP 0x40 /* Function Complete */ #define OSIOP_SSTAT0_STO 0x20 /* (Re)Selection timeout */ #define OSIOP_SSTAT0_SEL 0x10 /* (Re)Selected */ #define OSIOP_SSTAT0_SGE 0x08 /* SCSI Gross Error */ #define OSIOP_SSTAT0_UDC 0x04 /* Unexpected Disconnect */ #define OSIOP_SSTAT0_RST 0x02 /* RST asserted */ #define OSIOP_SSTAT0_PAR 0x01 /* Parity Error */ /* Scsi status register 1 (sstat1) */ #define OSIOP_SSTAT1_ILF 0x80 /* Input latch (sidl) full */ #define OSIOP_SSTAT1_ORF 0x40 /* output reg (sodr) full */ #define OSIOP_SSTAT1_OLF 0x20 /* output latch (sodl) full */ #define OSIOP_SSTAT1_AIP 0x10 /* Arbitration in progress */ #define OSIOP_SSTAT1_LOA 0x08 /* Lost arbitration */ #define OSIOP_SSTAT1_WOA 0x04 /* Won arbitration */ #define OSIOP_SSTAT1_RST 0x02 /* SCSI RST current value */ #define OSIOP_SSTAT1_SDP 0x01 /* SCSI SDP current value */ /* Scsi status register 2 (sstat2) */ #define OSIOP_SSTAT2_FF 0xf0 /* SCSI FIFO flags (bytecount) */ #define OSIOP_SCSI_FIFO_DEEP 8 #define OSIOP_SSTAT2_SDP 0x08 /* Latched (on REQ) SCSI SDP */ #define OSIOP_SSTAT2_MSG 0x04 /* Latched SCSI phase */ #define OSIOP_SSTAT2_CD 0x02 #define OSIOP_SSTAT2_IO 0x01 /* Chip test register 0 (ctest0) */ #define OSIOP_CTEST0_RES0 0x80 #define OSIOP_CTEST0_BTD 0x40 /* Byte-to-byte Timer Disable */ #define OSIOP_CTEST0_GRP 0x20 /* Generate Receive Parity */ #define OSIOP_CTEST0_EAN 0x10 /* Enable Active Negation */ #define OSIOP_CTEST0_HSC 0x08 /* Halt SCSI clock */ #define OSIOP_CTEST0_ERF 0x04 /* Extend REQ/ACK Filtering */ #define OSIOP_CTEST0_RES1 0x02 #define OSIOP_CTEST0_DDIR 0x01 /* Xfer direction (1-> from SCSI bus) */ /* Chip test register 1 (ctest1) */ #define OSIOP_CTEST1_FMT 0xf0 /* Byte empty in DMA FIFO bottom (high->byte3) */ #define OSIOP_CTEST1_FFL 0x0f /* Byte full in DMA FIFO top, same */ /* Chip test register 2 (ctest2) */ #define OSIOP_CTEST2_RES 0x80 #define OSIOP_CTEST2_SIGP 0x40 /* Signal process */ #define OSIOP_CTEST2_SOFF 0x20 /* Synch Offset compare (1-> zero Init, max Tgt */ #define OSIOP_CTEST2_SFP 0x10 /* SCSI FIFO Parity */ #define OSIOP_CTEST2_DFP 0x08 /* DMA FIFO Parity */ #define OSIOP_CTEST2_TEOP 0x04 /* True EOP (a-la 5380) */ #define OSIOP_CTEST2_DREQ 0x02 /* DREQ status */ #define OSIOP_CTEST2_DACK 0x01 /* DACK status */ /* Chip test register 3 (ctest3) read-only, top of SCSI FIFO */ /* Chip test register 4 (ctest4) */ #define OSIOP_CTEST4_MUX 0x80 /* Host bus multiplex mode */ #define OSIOP_CTEST4_ZMOD 0x40 /* High-impedance outputs */ #define OSIOP_CTEST4_SZM 0x20 /* ditto, SCSI "outputs" */ #define OSIOP_CTEST4_SLBE 0x10 /* SCSI loopback enable */ #define OSIOP_CTEST4_SFWR 0x08 /* SCSI FIFO write enable (from sodl) */ #define OSIOP_CTEST4_FBL 0x07 /* DMA FIFO Byte Lane select (from ctest6) 4->0, .. 7->3 */ /* Chip test register 5 (ctest5) */ #define OSIOP_CTEST5_ADCK 0x80 /* Clock Address Incrementor */ #define OSIOP_CTEST5_BBCK 0x40 /* Clock Byte counter */ #define OSIOP_CTEST5_ROFF 0x20 /* Reset SCSI offset */ #define OSIOP_CTEST5_MASR 0x10 /* Master set/reset pulses (of bits 3-0) */ #define OSIOP_CTEST5_DDIR 0x08 /* (re)set internal DMA direction */ #define OSIOP_CTEST5_EOP 0x04 /* (re)set internal EOP */ #define OSIOP_CTEST5_DREQ 0x02 /* (re)set internal REQ */ #define OSIOP_CTEST5_DACK 0x01 /* (re)set internal ACK */ /* Chip test register 6 (ctest6) DMA FIFO access */ /* Chip test register 7 (ctest7) */ #define OSIOP_CTEST7_CDIS 0x80 /* Cache burst disable */ #define OSIOP_CTEST7_SC1 0x40 /* Snoop control 1 */ #define OSIOP_CTEST7_SC0 0x20 /* Snoop control 0 */ #define OSIOP_CTEST7_STD 0x10 /* Selection timeout disable */ #define OSIOP_CTEST7_DFP 0x08 /* DMA FIFO parity bit */ #define OSIOP_CTEST7_EVP 0x04 /* Even parity (to host bus) */ #define OSIOP_CTEST7_TT1 0x02 /* Transfer type bit */ #define OSIOP_CTEST7_DIFF 0x01 /* Differential mode */ /* DMA FIFO register (dfifo) */ #define OSIOP_DFIFO_FLF 0x80 /* Flush (spill) DMA FIFO */ #define OSIOP_DFIFO_BO 0x7f /* FIFO byte offset counter */ /* Interrupt status register (istat) */ #define OSIOP_ISTAT_ABRT 0x80 /* Abort operation */ #define OSIOP_ISTAT_RST 0x40 /* Software reset */ #define OSIOP_ISTAT_SIGP 0x20 /* Signal process */ #define OSIOP_ISTAT_RES 0x10 #define OSIOP_ISTAT_CON 0x08 /* Connected */ #define OSIOP_ISTAT_RES1 0x04 #define OSIOP_ISTAT_SIP 0x02 /* SCSI Interrupt pending */ #define OSIOP_ISTAT_DIP 0x01 /* DMA Interrupt pending */ /* Chip test register 8 (ctest8) */ #define OSIOP_CTEST8_V 0xf0 /* Chip revision level */ #define OSIOP_CTEST8_FLF 0x08 /* Flush DMA FIFO */ #define OSIOP_CTEST8_CLF 0x04 /* Clear DMA and SCSI FIFOs */ #define OSIOP_CTEST8_FM 0x02 /* Fetch pin mode */ #define OSIOP_CTEST8_SM 0x01 /* Snoop pins mode */ /* DMA Mode register (dmode) */ #define OSIOP_DMODE_BL_MASK 0xc0 /* DMA burst length */ #define OSIOP_DMODE_BL8 0xc0 /* 8 bytes */ #define OSIOP_DMODE_BL4 0x80 /* 4 bytes */ #define OSIOP_DMODE_BL2 0x40 /* 2 bytes */ #define OSIOP_DMODE_BL1 0x00 /* 1 byte */ #define OSIOP_DMODE_FC 0x30 /* Function code */ #define OSIOP_DMODE_PD 0x08 /* Program/data */ #define OSIOP_DMODE_FAM 0x04 /* fixed address mode */ #define OSIOP_DMODE_U0 0x02 /* User programmable transfer type */ #define OSIOP_DMODE_MAN 0x01 /* SCRIPTS in Manual start mode */ /* DMA interrupt enable register (dien) */ #define OSIOP_DIEN_RES 0xc0 #define OSIOP_DIEN_BF 0x20 /* On Bus Fault */ #define OSIOP_DIEN_ABRT 0x10 /* On Abort */ #define OSIOP_DIEN_SSI 0x08 /* On SCRIPTS sstep */ #define OSIOP_DIEN_SIR 0x04 /* On SCRIPTS intr instruction */ #define OSIOP_DIEN_WTD 0x02 /* On watchdog timeout */ #define OSIOP_DIEN_IID 0x01 /* On illegal instruction detected */ /* DMA control register (dcntl) */ #define OSIOP_DCNTL_CF_MASK 0xc0 /* Clock frequency dividers: */ #define OSIOP_DCNTL_CF_2 0x00 /* 0 --> 37.51..50.00 MHz, div=2 */ #define OSIOP_DCNTL_CF_1_5 0x40 /* 1 --> 25.01..37.50 MHz, div=1.5 */ #define OSIOP_DCNTL_CF_1 0x80 /* 2 --> 16.67..25.00 MHz, div=1 */ #define OSIOP_DCNTL_CF_3 0xc0 /* 3 --> 50.01..66.67 MHz, div=3 */ #define OSIOP_DCNTL_EA 0x20 /* Enable ACK */ #define OSIOP_DCNTL_SSM 0x10 /* Single step mode */ #define OSIOP_DCNTL_LLM 0x08 /* Enable SCSI Low-level mode */ #define OSIOP_DCNTL_STD 0x04 /* Start DMA operation */ #define OSIOP_DCNTL_FA 0x02 /* Fast arbitration */ #define OSIOP_DCNTL_COM 0x01 /* 53C700 Compatibility */