aaede4d8d8
* Fix bug in wdc that would overflow ATAPI transfer length. * Improve wdc probe code so that 'wdc' is probed in if present even if there are no drives attached, and so that it works properly even if the only device is an ATAPI slave. * bus_space-ify. * split the ISA attachment from the wdc driver, and remove ISA dependencies from non-ISA files. * claim that wd and wdc are now machine-independent (probably not completely true, but mostly so; they at least work on arm32 and i386). * Various other minor fixups and cleanups, some of which were pointed out by Kazuki Sakamoto.
191 lines
7.4 KiB
C
191 lines
7.4 KiB
C
/* $NetBSD: wdcreg.h,v 1.15 1998/01/14 23:42:03 cgd Exp $ */
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/*-
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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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 the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)wdreg.h 7.1 (Berkeley) 5/9/91
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*/
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/*
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* Disk Controller register definitions.
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*/
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/* offsets of registers in the 'regular' register region */
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#define wd_data 0 /* data register (R/W - 16 bits) */
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#define wd_error 1 /* error register (R) */
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#define wd_precomp 1 /* write precompensation (W) */
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#define wd_features 1 /* features (W) */
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#define wd_seccnt 2 /* sector count (R/W) */
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#define wd_ireason 2 /* interrupt reason (R/W) (for atapi) */
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#define wd_sector 3 /* first sector number (R/W) */
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#define wd_cyl_lo 4 /* cylinder address, low byte (R/W) */
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#define wd_cyl_hi 5 /* cylinder address, high byte (R/W) */
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#define wd_sdh 6 /* sector size/drive/head (R/W) */
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#define wd_command 7 /* command register (W) */
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#define wd_status 7 /* immediate status (R) */
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/* offsets of registers in the auxiliary register region */
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#define wd_aux_altsts 0 /* alternate fixed disk status (R) */
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#define wd_aux_ctlr 0 /* fixed disk controller control (W) */
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#define WDCTL_4BIT 0x08 /* use four head bits (wd1003) */
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#define WDCTL_RST 0x04 /* reset the controller */
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#define WDCTL_IDS 0x02 /* disable controller interrupts */
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#if 0 /* NOT MAPPED; fd uses this register on PCs */
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#define wd_digin 1 /* disk controller input (R) */
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#endif
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/*
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* Status bits.
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*/
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#define WDCS_BSY 0x80 /* busy */
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#define WDCS_DRDY 0x40 /* drive ready */
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#define WDCS_DWF 0x20 /* drive write fault */
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#define WDCS_DSC 0x10 /* drive seek complete */
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#define WDCS_DRQ 0x08 /* data request */
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#define WDCS_CORR 0x04 /* corrected data */
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#define WDCS_IDX 0x02 /* index */
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#define WDCS_ERR 0x01 /* error */
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#define WDCS_BITS "\020\010bsy\007drdy\006dwf\005dsc\004drq\003corr\002idx\001err"
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/*
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* Error bits.
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*/
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#define WDCE_BBK 0x80 /* bad block detected */
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#define WDCE_UNC 0x40 /* uncorrectable data error */
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#define WDCE_MC 0x20 /* media changed */
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#define WDCE_IDNF 0x10 /* id not found */
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#define WDCE_ABRT 0x08 /* aborted command */
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#define WDCE_MCR 0x04 /* media change requested */
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#define WDCE_TK0NF 0x02 /* track 0 not found */
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#define WDCE_AMNF 0x01 /* address mark not found */
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#define WDERR_BITS "\020\010bbk\007unc\006mc\005idnf\004mcr\003abrt\002tk0nf\001amnf"
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/*
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* Commands for Disk Controller.
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*/
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#define WDCC_RECAL 0x10 /* disk restore code -- resets cntlr */
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#define WDCC_READ 0x20 /* disk read code */
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#define WDCC_WRITE 0x30 /* disk write code */
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#define WDCC__LONG 0x02 /* modifier -- access ecc bytes */
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#define WDCC__NORETRY 0x01 /* modifier -- no retrys */
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#define WDCC_FORMAT 0x50 /* disk format code */
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#define WDCC_DIAGNOSE 0x90 /* controller diagnostic */
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#define WDCC_IDP 0x91 /* initialize drive parameters */
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#define WDCC_READMULTI 0xc4 /* read multiple */
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#define WDCC_WRITEMULTI 0xc5 /* write multiple */
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#define WDCC_SETMULTI 0xc6 /* set multiple mode */
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#define WDCC_READDMA 0xc8 /* read with DMA */
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#define WDCC_WRITEDMA 0xca /* write with DMA */
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#define WDCC_ACKMC 0xdb /* acknowledge media change */
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#define WDCC_LOCK 0xde /* lock drawer */
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#define WDCC_UNLOCK 0xdf /* unlock drawer */
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#define WDCC_IDENTIFY 0xec /* read parameters from controller */
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#define WDCC_CACHEC 0xef /* cache control */
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#define WDSD_IBM 0xa0 /* forced to 512 byte sector, ecc */
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#define WDSD_CHS 0x00 /* cylinder/head/sector addressing */
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#define WDSD_LBA 0x40 /* logical block addressing */
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/* Commands for ATAPI devices */
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#define ATAPI_CHECK_POWER_MODE 0xe5
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#define ATAPI_EXEC_DRIVE_DIAGS 0x90
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#define ATAPI_IDLE_IMMEDIATE 0xe1
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#define ATAPI_NOP 0x00
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#define ATAPI_PACKET_COMMAND 0xa0
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#define ATAPI_IDENTIFY_DEVICE 0xa1
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#define ATAPI_SOFT_RESET 0x08
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#define ATAPI_SET_FEATURES 0xef
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#define ATAPI_SLEEP 0xe6
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#define ATAPI_STANDBY_IMMEDIATE 0xe0
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/* ireason */
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#define WDCI_CMD 0x01 /* command(1) or data(0) */
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#define WDCI_IN 0x02 /* transfer to(1) or from(0) the host */
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#define WDCI_RELEASE 0x04 /* bus released until completion */
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#define PHASE_CMDOUT (WDCS_DRQ | WDCI_CMD)
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#define PHASE_DATAIN (WDCS_DRQ | WDCI_IN)
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#define PHASE_DATAOUT WDCS_DRQ
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#define PHASE_COMPLETED (WDCI_IN | WDCI_CMD)
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#define PHASE_ABORTED 0
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#ifdef _KERNEL
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/*
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* read parameters command returns this:
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*/
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struct wdparams {
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/* drive info */
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short wdp_config; /* general configuration */
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#define WD_CFG_REMOVABLE 0x0080
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#define WD_CFG_FIXED 0x0040
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short wdp_cylinders; /* number of non-removable cylinders */
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char __reserved1[2];
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short wdp_heads; /* number of heads */
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short wdp_unfbytespertrk; /* number of unformatted bytes/track */
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short wdp_unfbytespersec; /* number of unformatted bytes/sector */
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short wdp_sectors; /* number of sectors */
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char wdp_vendor1[6];
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/* controller info */
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char wdp_serial[20]; /* serial number */
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short wdp_buftype; /* buffer type */
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#define WD_BUF_SINGLEPORTSECTOR 1 /* single port, single sector buffer */
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#define WD_BUF_DUALPORTMULTI 2 /* dual port, multiple sector buffer */
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#define WD_BUF_DUALPORTMULTICACHE 3 /* above plus track cache */
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short wdp_bufsize; /* buffer size, in 512-byte units */
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short wdp_eccbytes; /* ecc bytes appended */
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char wdp_revision[8]; /* firmware revision */
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char wdp_model[40]; /* model name */
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u_char wdp_maxmulti; /* maximum sectors per interrupt */
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char wdp_vendor2[1];
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short wdp_usedmovsd; /* can use double word read/write? */
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char wdp_vendor3[1];
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char wdp_capabilities; /* capability flags */
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#define WD_CAP_LBA 0x02
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#define WD_CAP_DMA 0x01
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char __reserved2[2];
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char wdp_vendor4[1];
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char wdp_piotiming; /* PIO timing mode */
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char wdp_vendor5[1];
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char wdp_dmatiming; /* DMA timing mode */
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};
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#endif /* _KERNEL */
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