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o ATA is now fully newbus'd and split into modules.
This means that on a modern system you just load "atapci and ata"
to get the base support, and then one or more of the device
subdrivers "atadisk atapicd atapifd atapist ataraid".
All can be loaded/unloaded anytime, but for obvious reasons you
dont want to unload atadisk when you have mounted filesystems.
o The device identify part of the probe has been rewritten to fix
the problems with odd devices the old had, and to try to remove
so of the long delays some HW could provoke. Also probing is done
without the need for interrupts, making earlier probing possible.
o SATA devices can be hot inserted/removed and devices will be created/
removed in /dev accordingly.
NOTE: only supported on controllers that has this feature:
Promise and Silicon Image for now.
On other controllers the usual atacontrol detach/attach dance is
still needed.
o Support for "atomic" composite ATA requests used for RAID.
o ATA RAID support has been rewritten and and now supports these
metadata formats:
"Adaptec HostRAID"
"Highpoint V2 RocketRAID"
"Highpoint V3 RocketRAID"
"Intel MatrixRAID"
"Integrated Technology Express"
"LSILogic V2 MegaRAID"
"LSILogic V3 MegaRAID"
"Promise FastTrak"
"Silicon Image Medley"
"FreeBSD PseudoRAID"
o Update the ioctl API to match new RAID levels etc.
o Update atacontrol to know about the new RAID levels etc
NOTE: you need to recompile atacontrol with the new sys/ata.h,
make world will take care of that.
NOTE2: that rebuild is done differently from the old system as
the rebuild is now done piggybacked on read requests to the
array, so atacontrol simply starts a background "dd" to rebuild
the array.
o The reinit code has been worked over to be much more robust.
o The timeout code has been overhauled for races.
o Support of new chipsets.
o Lots of fixes for bugs found while doing the modulerization and
reviewing the old code.
Missing or changed features from current ATA:
o atapi-cd no longer has support for ATAPI changers. Todays its
much cheaper and alot faster to copy those CD images to disk
and serve them from there. Besides they dont seem to be made
anymore, maybe for that exact reason.
o ATA RAID can only read metadata from all the above metadata formats,
not write all of them (Promise and Highpoint V2 so far). This means
that arrays can be picked up from the BIOS, but they cannot be
created from FreeBSD. There is more to it than just the missing
write metadata support, those formats are not unique to a given
controller like Promise and Highpoint formats, instead they exist
for several types, and even worse, some controllers can have
different formats and its impossible to tell which one.
The outcome is that we cannot reliably create the metadata of those
formats and be sure the controller BIOS will understand it.
However write support is needed to update/fail/rebuild the arrays
properly so it sits fairly high on the TODO list.
o So far atapicam is not supported with these changes. When/if this
will change is up to the maintainer of atapi-cam so go there for
questions.
HW donated by: Webveveriet AS
HW donated by: Frode Nordahl
HW donated by: Yahoo!
HW donated by: Sentex
Patience by: Vife and my boys (and even the cats)
131 lines
8.3 KiB
C
131 lines
8.3 KiB
C
/*-
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* Copyright (c) 1998 - 2005 Søren Schmidt <sos@FreeBSD.org>
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* 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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* without modification, immediately at the beginning of the file.
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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. 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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* $FreeBSD$
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*/
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/* ATA commands */
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#define ATA_NOP 0x00 /* NOP command */
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#define ATA_NF_FLUSHQUEUE 0x00 /* flush queued cmd's */
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#define ATA_NF_AUTOPOLL 0x01 /* start autopoll function */
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#define ATA_DEVICE_RESET 0x08 /* reset ATAPI device */
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#define ATA_READ 0x20 /* read command */
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#define ATA_READ48 0x24 /* read command */
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#define ATA_READ_DMA48 0x25 /* read w/DMA command */
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#define ATA_READ_DMA_QUEUED48 0x26 /* read w/DMA QUEUED command */
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#define ATA_READ_MUL48 0x29 /* read multi command */
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#define ATA_WRITE 0x30 /* write command */
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#define ATA_WRITE48 0x34 /* write command */
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#define ATA_WRITE_DMA48 0x35 /* write w/DMA command */
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#define ATA_WRITE_DMA_QUEUED48 0x36 /* write w/DMA QUEUED command */
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#define ATA_WRITE_MUL48 0x39 /* write multi command */
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#define ATA_READ_FPDMA_QUEUED 0x60 /* read w/DMA NCQ */
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#define ATA_WRITE_FPDMA_QUEUED 0x61 /* write w/DMA NCQ */
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#define ATA_SEEK 0x70 /* seek */
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#define ATA_PACKET_CMD 0xa0 /* packet command */
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#define ATA_ATAPI_IDENTIFY 0xa1 /* get ATAPI params*/
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#define ATA_SERVICE 0xa2 /* service command */
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#define ATA_READ_MUL 0xc4 /* read multi command */
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#define ATA_WRITE_MUL 0xc5 /* write multi command */
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#define ATA_SET_MULTI 0xc6 /* set multi size command */
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#define ATA_READ_DMA_QUEUED 0xc7 /* read w/DMA QUEUED command */
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#define ATA_READ_DMA 0xc8 /* read w/DMA command */
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#define ATA_WRITE_DMA 0xca /* write w/DMA command */
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#define ATA_WRITE_DMA_QUEUED 0xcc /* write w/DMA QUEUED command */
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#define ATA_SLEEP 0xe6 /* sleep command */
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#define ATA_FLUSHCACHE 0xe7 /* flush cache to disk */
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#define ATA_FLUSHCACHE48 0xea /* flush cache to disk */
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#define ATA_ATA_IDENTIFY 0xec /* get ATA params */
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#define ATA_SETFEATURES 0xef /* features command */
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#define ATA_SF_SETXFER 0x03 /* set transfer mode */
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#define ATA_SF_ENAB_WCACHE 0x02 /* enable write cache */
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#define ATA_SF_DIS_WCACHE 0x82 /* disable write cache */
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#define ATA_SF_ENAB_RCACHE 0xaa /* enable readahead cache */
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#define ATA_SF_DIS_RCACHE 0x55 /* disable readahead cache */
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#define ATA_SF_ENAB_RELIRQ 0x5d /* enable release interrupt */
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#define ATA_SF_DIS_RELIRQ 0xdd /* disable release interrupt */
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#define ATA_SF_ENAB_SRVIRQ 0x5e /* enable service interrupt */
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#define ATA_SF_DIS_SRVIRQ 0xde /* disable service interrupt */
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/* ATAPI commands */
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#define ATAPI_TEST_UNIT_READY 0x00 /* check if device is ready */
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#define ATAPI_REZERO 0x01 /* rewind */
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#define ATAPI_REQUEST_SENSE 0x03 /* get sense data */
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#define ATAPI_FORMAT 0x04 /* format unit */
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#define ATAPI_READ 0x08 /* read data */
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#define ATAPI_WRITE 0x0a /* write data */
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#define ATAPI_WEOF 0x10 /* write filemark */
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#define ATAPI_WF_WRITE 0x01
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#define ATAPI_SPACE 0x11 /* space command */
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#define ATAPI_SP_FM 0x01
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#define ATAPI_SP_EOD 0x03
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#define ATAPI_MODE_SELECT 0x15 /* mode select */
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#define ATAPI_ERASE 0x19 /* erase */
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#define ATAPI_MODE_SENSE 0x1a /* mode sense */
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#define ATAPI_START_STOP 0x1b /* start/stop unit */
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#define ATAPI_SS_LOAD 0x01
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#define ATAPI_SS_RETENSION 0x02
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#define ATAPI_SS_EJECT 0x04
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#define ATAPI_PREVENT_ALLOW 0x1e /* media removal */
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#define ATAPI_READ_FORMAT_CAPACITIES 0x23 /* get format capacities */
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#define ATAPI_READ_CAPACITY 0x25 /* get volume capacity */
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#define ATAPI_READ_BIG 0x28 /* read data */
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#define ATAPI_WRITE_BIG 0x2a /* write data */
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#define ATAPI_LOCATE 0x2b /* locate to position */
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#define ATAPI_READ_POSITION 0x34 /* read position */
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#define ATAPI_SYNCHRONIZE_CACHE 0x35 /* flush buf, close channel */
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#define ATAPI_WRITE_BUFFER 0x3b /* write device buffer */
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#define ATAPI_READ_BUFFER 0x3c /* read device buffer */
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#define ATAPI_READ_SUBCHANNEL 0x42 /* get subchannel info */
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#define ATAPI_READ_TOC 0x43 /* get table of contents */
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#define ATAPI_PLAY_10 0x45 /* play by lba */
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#define ATAPI_PLAY_MSF 0x47 /* play by MSF address */
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#define ATAPI_PLAY_TRACK 0x48 /* play by track number */
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#define ATAPI_PAUSE 0x4b /* pause audio operation */
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#define ATAPI_READ_DISK_INFO 0x51 /* get disk info structure */
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#define ATAPI_READ_TRACK_INFO 0x52 /* get track info structure */
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#define ATAPI_RESERVE_TRACK 0x53 /* reserve track */
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#define ATAPI_SEND_OPC_INFO 0x54 /* send OPC structurek */
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#define ATAPI_MODE_SELECT_BIG 0x55 /* set device parameters */
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#define ATAPI_REPAIR_TRACK 0x58 /* repair track */
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#define ATAPI_READ_MASTER_CUE 0x59 /* read master CUE info */
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#define ATAPI_MODE_SENSE_BIG 0x5a /* get device parameters */
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#define ATAPI_CLOSE_TRACK 0x5b /* close track/session */
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#define ATAPI_READ_BUFFER_CAPACITY 0x5c /* get buffer capicity */
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#define ATAPI_SEND_CUE_SHEET 0x5d /* send CUE sheet */
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#define ATAPI_BLANK 0xa1 /* blank the media */
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#define ATAPI_SEND_KEY 0xa3 /* send DVD key structure */
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#define ATAPI_REPORT_KEY 0xa4 /* get DVD key structure */
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#define ATAPI_PLAY_12 0xa5 /* play by lba */
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#define ATAPI_LOAD_UNLOAD 0xa6 /* changer control command */
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#define ATAPI_READ_STRUCTURE 0xad /* get DVD structure */
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#define ATAPI_PLAY_CD 0xb4 /* universal play command */
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#define ATAPI_SET_SPEED 0xbb /* set drive speed */
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#define ATAPI_MECH_STATUS 0xbd /* get changer status */
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#define ATAPI_READ_CD 0xbe /* read data */
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#define ATAPI_POLL_DSC 0xff /* poll DSC status bit */
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