Add register definitions for the ns8477 floppy controller. This is a superset
of the nec765.
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christos
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/* $NetBSD: ns8477reg.h,v 1.1 1998/06/21 18:48:12 christos Exp $ */
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/*
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* Copyright (c) 1998 Christos Zoulas. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christos Zoulas.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Register descriptions of the National Semiconductor PC8477B
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* floppy controller
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*/
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#define FDC_SRA 0 /* (R) Status Register A */
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#define FDC_SRB 1 /* (R) Status Register B */
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#define FDC_DOR 2 /* (R/W) Digital Output Register */
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# define FDC_DOR_SEL0 0x01 /* Drive Select 0 */
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# define FDC_DOR_SEL1 0x02 /* Drive Select 1 */
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# define FDC_DOR_RESET 0x04 /* Reset Controller */
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# define FDC_DOR_DMAEN 0x08 /* Dma Enable */
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# define FDC_DOR_MTR0 0x10 /* Motor Enable 0 */
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# define FDC_DOR_MTR1 0x20 /* Motor Enable 1 */
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# define FDC_DOR_MTR2 0x40 /* Motor Enable 2 */
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# define FDC_DOR_MTR3 0x80 /* Motor Enable 3 */
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# define FDC_DOR_MTR(a) (1 << (n + 4))
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#define FDC_TDR 3 /* (R/W) Tape Drive Register */
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# define FDC_TDR_SEL0 0x01 /* Tape Select 0 */
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# define FDC_TDR_SEL1 0x02 /* Tape Select 1 */
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#define FDC_MSR 4 /* (R) Main Status Register */
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# define FDC_MSR_BUSY0 0x01 /* Drive 0 Busy */
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# define FDC_MSR_BUSY1 0x02 /* Drive 1 Busy */
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# define FDC_MSR_BUSY2 0x04 /* Drive 2 Busy */
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# define FDC_MSR_BUSY3 0x08 /* Drive 3 Busy */
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# define FDC_MSR_CMDPRG 0x10 /* Command In Progress */
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# define FDC_MSR_NONDMA 0x20 /* Non DMA Execution */
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# define FDC_MSR_DIO 0x40 /* Data I/O Direction */
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# define FDC_MSR_RQM 0x80 /* Reguest for Master */
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#define FDC_DSR 4 /* (W) Data Rate Select Register */
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# define FDC_DSR_DRATE0 0x01 /* Data Rate Select 0 */
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# define FDC_DSR_DRATE1 0x02 /* Data Rate Select 0 */
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/*
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* bit MFM FM
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* 00 500Kb/s 250Kb/s
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* 01 300Kb/s 150Kb/s
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* 10 250Kb/s 125Kb/s
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* 11 1Mb/s illegal
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*/
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# define FDC_DSR_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */
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# define FDC_DSR_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */
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# define FDC_DSR_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */
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# define FDC_DSR_1MBPS 0x03 /* 1MBPS MFM drive transfer rate */
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# define FDC_DSR_PREC0 0x04 /* Precompensation bit 0*/
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# define FDC_DSR_PREC1 0x08 /* Precompensation bit 1*/
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# define FDC_DSR_PREC2 0x10 /* Precompensation bit 2*/
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/*
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* bit Precomp Data Rate
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* 000 default
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* 001 41.7ns 1Mb/s
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* 010 83.3ns
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* 011 125.0ns 500Kb/s, 300Kb/s, 250Kb/s
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* 100 168.7ns
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* 101 208.3ns
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* 110 208.3ns
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* 111 0.0ns
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*/
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# define FDC_DSR_ZERO 0x20 /* Undef; should be 0 */
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# define FDC_DSR_LOWPWR 0x40 /* Low Power Mode */
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# define FDC_DSR_SWRST 0x80 /* Software Reset */
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#define FDC_FIFO 5 /* (R/W) Data Register (FIFO) */
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/*
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* Commands
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*/
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#define FDC_CMD_MODE (0x01)
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#define FDC_CMD_READ_TRACK(mfm) (0x02|mfm)
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#define FDC_CMD_SPECIFY (0x03)
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#define FDC_CMD_SENSE_DRIVE_STATUS (0x04)
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#define FDC_CMD_WRITE_DATA(mt,mfm) (0x05|mt|mfm)
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#define FDC_CMD_READ_DATA(mt,mfm,sk) (0x06|mt|mfm|sk)
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#define FDC_CMD_RECALIBRATE (0x07)
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#define FDC_CMD_SENSE_INTERRUPT (0x08)
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#define FDC_CMD_WRITE_DEL_DATA(mt,mfm) (0x09|mt|mfm)
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#define FDC_CMD_READ_ID(mfm) (0x0a|mfm)
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#define FDC_CMD_READ_DEL_DATA(mt,mfm,sk) (0x0c|mt|mfm|sk)
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#define FDC_CMD_FORMAT_TRACK(mfm) (0x0d|mfm)
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#define FDC_CMD_DUMPREG (0x0e)
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#define FDC_CMD_SEEK (0x0f)
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#define FDC_CMD_VERSION (0x10)
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#define FDC_CMD_SCAN_EQUAL(mt,mfm,sk) (0x11|mt|mfm|sk)
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#define FDC_CMD_PERPENDICULAR (0x12)
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#define FDC_CMD_CONFIGURE (0x13)
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#define FDC_CMD_LOCK(lock) (0x14|lock)
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#define FDC_CMD_VERIFY(mt,mfm,sk) (0x16|mt|mfm|sk)
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#define FDC_CMD_NSC (0x18)
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#define FDC_CMD_SCAN_LO_EQUAL(mt,mfm,sk) (0x19|mt|mfm|sk)
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#define FDC_CMD_SCAN_HI_EQUAL(mt,mfm,sk) (0x1d|mt|mfm|sk)
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#define FDC_CMD_SET_TRACK(wnr) (0x21|wnr)
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#define FDC_CMD_REL_SEEK(dir) (0x8f|dir)
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#define FDC_CMD_CONFIGURE_FLAGS_POLL 0x10
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#define FDC_CMD_CONFIGURE_FLAGS_FIFO 0x20
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#define FDC_CMD_CONFIGURE_FLAGS_EIS 0x40
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#define FDC_CMD_FLAGS_LOCK 0x80
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#define FDC_CMD_FLAGS_MT 0x80
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#define FDC_CMD_FLAGS_MFM 0x40
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#define FDC_CMD_FLAGS_SK 0x20
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#define FDC_CMD_FLAGS_DIR 0x40
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#define FDC_CMD_FLAGS_WNR 0x40
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/*
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* Command Status
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*/
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/* Status register ST0 */
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#define FDC_ST0BITS "\020\010invld\007abnrml\006seek_cmplt\005drv_chck\004drive_rdy\003top_head\002ds1\001ds0"
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# define FDC_ST0_DS0 0x01 /* Drive Select 0 */
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# define FDC_ST0_DS1 0x02 /* Drive Select 1 */
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# define FDC_ST0_HDS 0x04 /* Head select */
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# define FDC_ST0_ZERO 0x08 /* Undef; should be 0 */
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# define FDC_ST0_EC 0x10 /* Equipment check */
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# define FDC_ST0_SE 0x20 /* Seek completed */
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# define FDC_ST0_IC0 0x40 /* Interrupt code 0 */
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# define FDC_ST0_IC1 0x80 /* Interrupt code 1 */
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# define FDC_ST0(a) (a & ~(FDC_ST0_DS0|FDC_ST0_DS1|FDC_ST0_HDS))
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# define FDC_ST0_NRML 0x00 /* Normal Completion */
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# define FDC_ST0_ABNR 0x40 /* Abnormal Termination */
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# define FDC_ST0_INVL 0x80 /* Invalid Command */
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# define FDC_ST0_CHGD 0xc0 /* Drive status changed */
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/* Status register ST1 */
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#define FDC_ST1BITS "\020\010end_of_cyl\006bad_crc\005data_overrun\003sec_not_fnd\002write_protect\001no_am"
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# define FDC_ST1_MA 0x01 /* Missing address mark */
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# define FDC_ST1_NW 0x02 /* Write Protect */
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# define FDC_ST1_ND 0x04 /* No Data */
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# define FDC_ST1_ZERO0 0x08 /* Undef; should be 0 */
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# define FDC_ST1_OR 0x10 /* Overrun error */
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# define FDC_ST1_CE 0x20 /* CRC error */
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# define FDC_ST1_ZERO1 0x40 /* Undef; should be 0 */
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# define FDC_ST1_ET 0x80 /* End of Track */
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/* Status register ST2 */
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#define FDC_ST2BITS "\020\007ctrl_mrk\006bad_crc\005wrong_cyl\004scn_eq\003scn_not_fnd\002bad_cyl\001no_dam"
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# define FDC_ST2_MD 0x01 /* Missing Address Mark */
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# define FDC_ST2_BT 0x02 /* Bad Track */
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# define FDC_ST2_SNS 0x04 /* Scan Not Satisfied */
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# define FDC_ST2_SEH 0x08 /* Scan Equal Hit */
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# define FDC_ST2_WT 0x10 /* Wrong Track */
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# define FDC_ST2_CD 0x20 /* CRC Error in Data */
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# define FDC_ST2_CM 0x40 /* Control Mark */
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# define FDC_ST2_ZERO 0x80 /* Undef; should be 0 */
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/* Status register ST3 */
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#define FDC_ST3BITS "\020\010fault\007write_protect\006drdy\005tk0\004two_side\003side_sel\002ds1\001ds0"
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# define FDC_ST3_DS0 0x01 /* Drive Select 0 */
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# define FDC_ST3_DS1 0x02 /* Drive Select 1 */
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# define FDC_ST3_HDS 0x04 /* Head Select */
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# define FDC_ST3_ONE0 0x08 /* Undef; should be 0 */
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# define FDC_ST3_TK0 0x10 /* Track 0 */
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# define FDC_ST3_ONE1 0x20 /* Undef; should be 0 */
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# define FDC_ST3_WP 0x40 /* Write Protect */
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# define FDC_ST3_ZERO 0x80 /* Undef; should be 0 */
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#define FDC_NONE 6 /* (X) None (Bus TRI-STATE) */
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#define FDC_DIR 7 /* (R) Digital Input Register */
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# define FDC_DIR_DSKCHG 0x80 /* Disk Changed */
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#define FDC_CCR 7 /* (W) Configuration Register */
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# define FDC_CCR_DRATE0 0x01 /* Data Rate Select 0 */
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# define FDC_CCR_DRATE1 0x02 /* Data Rate Select 0 */
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# define FDC_CCR_ZERO0 0x04 /* Undef; should be 0 */
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# define FDC_CCR_ZERO1 0x08 /* Undef; should be 0 */
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# define FDC_CCR_ZERO2 0x10 /* Undef; should be 0 */
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# define FDC_CCR_ZERO3 0x20 /* Undef; should be 0 */
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# define FDC_CCR_ZERO4 0x40 /* Undef; should be 0 */
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# define FDC_CCR_ZERO5 0x80 /* Undef; should be 0 */
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#define FDC_NPORT 8
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