/* $NetBSD: wdcreg.h,v 1.18 1998/10/12 16:09:18 bouyer Exp $ */ /*- * Copyright (c) 1991 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * 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 the University of * California, Berkeley and its contributors. * 4. 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. * * @(#)wdreg.h 7.1 (Berkeley) 5/9/91 */ /* * Disk Controller register definitions. */ /* offsets of registers in the 'regular' register region */ #define wd_data 0 /* data register (R/W - 16 bits) */ #define wd_error 1 /* error register (R) */ #define wd_precomp 1 /* write precompensation (W) */ #define wd_features 1 /* features (W), same as wd_precomp */ #define wd_seccnt 2 /* sector count (R/W) */ #define wd_ireason 2 /* interrupt reason (R/W) (for atapi) */ #define wd_sector 3 /* first sector number (R/W) */ #define wd_cyl_lo 4 /* cylinder address, low byte (R/W) */ #define wd_cyl_hi 5 /* cylinder address, high byte (R/W) */ #define wd_sdh 6 /* sector size/drive/head (R/W) */ #define wd_command 7 /* command register (W) */ #define wd_status 7 /* immediate status (R) */ /* offsets of registers in the auxiliary register region */ #define wd_aux_altsts 0 /* alternate fixed disk status (R) */ #define wd_aux_ctlr 0 /* fixed disk controller control (W) */ #define WDCTL_4BIT 0x08 /* use four head bits (wd1003) */ #define WDCTL_RST 0x04 /* reset the controller */ #define WDCTL_IDS 0x02 /* disable controller interrupts */ #if 0 /* NOT MAPPED; fd uses this register on PCs */ #define wd_digin 1 /* disk controller input (R) */ #endif /* * Status bits. */ #define WDCS_BSY 0x80 /* busy */ #define WDCS_DRDY 0x40 /* drive ready */ #define WDCS_DWF 0x20 /* drive write fault */ #define WDCS_DSC 0x10 /* drive seek complete */ #define WDCS_DRQ 0x08 /* data request */ #define WDCS_CORR 0x04 /* corrected data */ #define WDCS_IDX 0x02 /* index */ #define WDCS_ERR 0x01 /* error */ #define WDCS_BITS "\020\010bsy\007drdy\006dwf\005dsc\004drq\003corr\002idx\001err" /* * Error bits. */ #define WDCE_BBK 0x80 /* bad block detected */ #define WDCE_UNC 0x40 /* uncorrectable data error */ #define WDCE_MC 0x20 /* media changed */ #define WDCE_IDNF 0x10 /* id not found */ #define WDCE_MCR 0x08 /* media change requested */ #define WDCE_ABRT 0x04 /* aborted command */ #define WDCE_TK0NF 0x02 /* track 0 not found */ #define WDCE_AMNF 0x01 /* address mark not found */ #define WDERR_BITS "\020\010bbk\007unc\006mc\005idnf\004mcr\003abrt\002tk0nf\001amnf" /* * Commands for Disk Controller. */ #define WDCC_NOP 0x00 /* NOP - Always fail with "aborted command" */ #define WDCC_RECAL 0x10 /* disk restore code -- resets cntlr */ #define WDCC_READ 0x20 /* disk read code */ #define WDCC_WRITE 0x30 /* disk write code */ #define WDCC__LONG 0x02 /* modifier -- access ecc bytes */ #define WDCC__NORETRY 0x01 /* modifier -- no retrys */ #define WDCC_FORMAT 0x50 /* disk format code */ #define WDCC_DIAGNOSE 0x90 /* controller diagnostic */ #define WDCC_IDP 0x91 /* initialize drive parameters */ #define WDCC_READMULTI 0xc4 /* read multiple */ #define WDCC_WRITEMULTI 0xc5 /* write multiple */ #define WDCC_SETMULTI 0xc6 /* set multiple mode */ #define WDCC_READDMA 0xc8 /* read with DMA */ #define WDCC_WRITEDMA 0xca /* write with DMA */ #define WDCC_ACKMC 0xdb /* acknowledge media change */ #define WDCC_LOCK 0xde /* lock drawer */ #define WDCC_UNLOCK 0xdf /* unlock drawer */ #define WDCC_IDENTIFY 0xec /* read parameters from controller */ #define SET_FEATURES 0xef /* set features */ /* Subcommands for SET_FEATURES (features register ) */ #define WDSF_EN_WR_CACHE 0x02 #define WDSF_SET_MODE 0x03 #define WDSF_REASSIGN_EN 0x04 #define WDSF_RETRY_DS 0x33 #define WDSF_SET_CACHE_SGMT 0x54 #define WDSF_READAHEAD_DS 0x55 #define WDSF_POD_DS 0x66 #define WDSF_ECC_DS 0x77 #define WDSF_WRITE_CACHE_DS 0x82 #define WDSF_REASSIGN_DS 0x84 #define WDSF_ECC_EN 0x88 #define WDSF_RETRY_EN 0x99 #define WDSF_SET_CURRENT 0x9A #define WDSF_READAHEAD_EN 0xAA #define WDSF_PREFETCH_SET 0xAB #define WDSF_POD_EN 0xCC /* parameters uploaded to device/heads register */ #define WDSD_IBM 0xa0 /* forced to 512 byte sector, ecc */ #define WDSD_CHS 0x00 /* cylinder/head/sector addressing */ #define WDSD_LBA 0x40 /* logical block addressing */ /* Commands for ATAPI devices */ #define ATAPI_CHECK_POWER_MODE 0xe5 #define ATAPI_EXEC_DRIVE_DIAGS 0x90 #define ATAPI_IDLE_IMMEDIATE 0xe1 #define ATAPI_NOP 0x00 #define ATAPI_PKT_CMD 0xa0 #define ATAPI_IDENTIFY_DEVICE 0xa1 #define ATAPI_SOFT_RESET 0x08 #define ATAPI_SLEEP 0xe6 #define ATAPI_STANDBY_IMMEDIATE 0xe0 /* Bytes used by ATAPI_PACKET_COMMAND ( feature register) */ #define ATAPI_PKT_CMD_FTRE_DMA 0x01 #define ATAPI_PKT_CMD_FTRE_OVL 0x02 /* ireason */ #define WDCI_CMD 0x01 /* command(1) or data(0) */ #define WDCI_IN 0x02 /* transfer to(1) or from(0) the host */ #define WDCI_RELEASE 0x04 /* bus released until completion */ #define PHASE_CMDOUT (WDCS_DRQ | WDCI_CMD) #define PHASE_DATAIN (WDCS_DRQ | WDCI_IN) #define PHASE_DATAOUT WDCS_DRQ #define PHASE_COMPLETED (WDCI_IN | WDCI_CMD) #define PHASE_ABORTED 0