ide: move ide.txt to Documentation/ide/

Cleanup some of Documentation directory:
Move Documentation/ide.txt to the ide/ sub-directory.
Fix trailing whitespace while there.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 0 insertions, 335 deletions

diff --git a/Documentation/ide.txt b/Documentation/ide.txt
deleted file mode 100644
index bcd7cd1278ef..000000000000
--- a/Documentation/ide.txt
+++ /dev/null
@@ -1,335 +0,0 @@
-
-	Information regarding the Enhanced IDE drive in Linux 2.6
-
-==============================================================================
-
-   
-   The hdparm utility can be used to control various IDE features on a
-   running system. It is packaged separately.  Please Look for it on popular
-   linux FTP sites.
-   
-
-
-***  IMPORTANT NOTICES:  BUGGY IDE CHIPSETS CAN CORRUPT DATA!!
-***  =================
-***  PCI versions of the CMD640 and RZ1000 interfaces are now detected
-***  automatically at startup when PCI BIOS support is configured.
-***
-***  Linux disables the "prefetch" ("readahead") mode of the RZ1000
-***  to prevent data corruption possible due to hardware design flaws.
-***
-***  For the CMD640, linux disables "IRQ unmasking" (hdparm -u1) on any
-***  drive for which the "prefetch" mode of the CMD640 is turned on.
-***  If "prefetch" is disabled (hdparm -p8), then "IRQ unmasking" can be
-***  used again.
-***
-***  For the CMD640, linux disables "32bit I/O" (hdparm -c1) on any drive
-***  for which the "prefetch" mode of the CMD640 is turned off.
-***  If "prefetch" is enabled (hdparm -p9), then "32bit I/O" can be
-***  used again.
-***
-***  The CMD640 is also used on some Vesa Local Bus (VLB) cards, and is *NOT*
-***  automatically detected by Linux.  For safe, reliable operation with such
-***  interfaces, one *MUST* use the "cmd640.probe_vlb" kernel option.
-***
-***  Use of the "serialize" option is no longer necessary.
-
-================================================================================
-Common pitfalls:
-
-- 40-conductor IDE cables are capable of transferring data in DMA modes up to
-  udma2, but no faster.
-
-- If possible devices should be attached to separate channels if they are
-  available. Typically the disk on the first and CD-ROM on the second.
-
-- If you mix devices on the same cable, please consider using similar devices
-  in respect of the data transfer mode they support.
-
-- Even better try to stick to the same vendor and device type on the same
-  cable.
-
-================================================================================
-
-This is the multiple IDE interface driver, as evolved from hd.c.  
-
-It supports up to 9 IDE interfaces per default, on one or more IRQs (usually
-14 & 15).  There can be up to two drives per interface, as per the ATA-6 spec.
-
-Primary:    ide0, port 0x1f0; major=3;  hda is minor=0; hdb is minor=64
-Secondary:  ide1, port 0x170; major=22; hdc is minor=0; hdd is minor=64
-Tertiary:   ide2, port 0x1e8; major=33; hde is minor=0; hdf is minor=64
-Quaternary: ide3, port 0x168; major=34; hdg is minor=0; hdh is minor=64
-fifth..     ide4, usually PCI, probed
-sixth..     ide5, usually PCI, probed
-
-To access devices on interfaces > ide0, device entries please make sure that
-device files for them are present in /dev.  If not, please create such
-entries, by using /dev/MAKEDEV.
-
-This driver automatically probes for most IDE interfaces (including all PCI
-ones), for the drives/geometries attached to those interfaces, and for the IRQ
-lines being used by the interfaces (normally 14, 15 for ide0/ide1).
-
-For special cases, interfaces may be specified using kernel "command line"
-options.  For example,
-
-	ide3=0x168,0x36e,10	/* ioports 0x168-0x16f,0x36e, irq 10 */
-
-Normally the irq number need not be specified, as ide.c will probe for it:
-
-	ide3=0x168,0x36e	/* ioports 0x168-0x16f,0x36e */
-
-The standard port, and irq values are these:
-
-	ide0=0x1f0,0x3f6,14
-	ide1=0x170,0x376,15
-	ide2=0x1e8,0x3ee,11
-	ide3=0x168,0x36e,10
-
-Note that the first parameter reserves 8 contiguous ioports, whereas the
-second value denotes a single ioport. If in doubt, do a 'cat /proc/ioports'.
-
-In all probability the device uses these ports and IRQs if it is attached
-to the appropriate ide channel.  Pass the parameter for the correct ide
-channel to the kernel, as explained above.
-
-Any number of interfaces may share a single IRQ if necessary, at a slight
-performance penalty, whether on separate cards or a single VLB card.
-The IDE driver automatically detects and handles this.  However, this may
-or may not be harmful to your hardware.. two or more cards driving the same IRQ
-can potentially burn each other's bus driver, though in practice this
-seldom occurs.  Be careful, and if in doubt, don't do it!
-
-Drives are normally found by auto-probing and/or examining the CMOS/BIOS data.
-For really weird situations, the apparent (fdisk) geometry can also be specified
-on the kernel "command line" using LILO.  The format of such lines is:
-
-	hdx=cyls,heads,sects,wpcom,irq
-or	hdx=cdrom
-
-where hdx can be any of hda through hdh, Three values are required
-(cyls,heads,sects).  For example:
-
-	hdc=1050,32,64  hdd=cdrom
-
-either {hda,hdb} or {hdc,hdd}.  The results of successful auto-probing may
-override the physical geometry/irq specified, though the "original" geometry
-may be retained as the "logical" geometry for partitioning purposes (fdisk).
-
-If the auto-probing during boot time confuses a drive (ie. the drive works
-with hd.c but not with ide.c), then an command line option may be specified
-for each drive for which you'd like the drive to skip the hardware
-probe/identification sequence.  For example:
-
-	hdb=noprobe
-or
-	hdc=768,16,32
-	hdc=noprobe
-
-Note that when only one IDE device is attached to an interface, it should be
-jumpered as "single" or "master", *not* "slave".  Many folks have had
-"trouble" with cdroms because of this requirement, so the driver now probes
-for both units, though success is more likely when the drive is jumpered
-correctly.
-
-Courtesy of Scott Snyder and others, the driver supports ATAPI cdrom drives
-such as the NEC-260 and the new MITSUMI triple/quad speed drives.
-Such drives will be identified at boot time, just like a hard disk.
-
-If for some reason your cdrom drive is *not* found at boot time, you can force
-the probe to look harder by supplying a kernel command line parameter
-via LILO, such as:
-
-	hdc=cdrom	/* hdc = "master" on second interface */
-or
-	hdd=cdrom	/* hdd = "slave" on second interface */
-
-For example, a GW2000 system might have a hard drive on the primary
-interface (/dev/hda) and an IDE cdrom drive on the secondary interface
-(/dev/hdc).  To mount a CD in the cdrom drive, one would use something like:
-
-	ln -sf /dev/hdc /dev/cdrom
-	mkdir /mnt/cdrom
-	mount /dev/cdrom /mnt/cdrom -t iso9660 -o ro
-
-If, after doing all of the above, mount doesn't work and you see
-errors from the driver (with dmesg) complaining about `status=0xff',
-this means that the hardware is not responding to the driver's attempts
-to read it.  One of the following is probably the problem:
-
-  - Your hardware is broken.
-
-  - You are using the wrong address for the device, or you have the
-    drive jumpered wrong.  Review the configuration instructions above.
-
-  - Your IDE controller requires some nonstandard initialization sequence
-    before it will work properly.  If this is the case, there will often
-    be a separate MS-DOS driver just for the controller.  IDE interfaces
-    on sound cards usually fall into this category.  Such configurations
-    can often be made to work by first booting MS-DOS, loading the
-    appropriate drivers, and then warm-booting linux (without powering
-    off).  This can be automated using loadlin in the MS-DOS autoexec.
-
-If you always get timeout errors, interrupts from the drive are probably
-not making it to the host.  Check how you have the hardware jumpered
-and make sure it matches what the driver expects (see the configuration
-instructions above).  If you have a PCI system, also check the BIOS
-setup; I've had one report of a system which was shipped with IRQ 15
-disabled by the BIOS.
-
-The kernel is able to execute binaries directly off of the cdrom,
-provided it is mounted with the default block size of 1024 (as above).
-
-Please pass on any feedback on any of this stuff to the maintainer,
-whose address can be found in linux/MAINTAINERS.
-
-Note that if BOTH hd.c and ide.c are configured into the kernel,
-hd.c will normally be allowed to control the primary IDE interface.
-This is useful for older hardware that may be incompatible with ide.c,
-and still allows newer hardware to run on the 2nd/3rd/4th IDE ports
-under control of ide.c.   To have ide.c also "take over" the primary
-IDE port in this situation, use the "command line" parameter:  ide0=0x1f0
-
-The IDE driver is modularized.  The high level disk/CD-ROM/tape/floppy
-drivers can always be compiled as loadable modules, the chipset drivers
-can only be compiled into the kernel, and the core code (ide.c) can be
-compiled as a loadable module provided no chipset support is needed.
-
-When using ide.c as a module in combination with kmod, add:
-
-	alias block-major-3 ide-probe
-
-to /etc/modprobe.conf.
-
-When ide.c is used as a module, you can pass command line parameters to the
-driver using the "options=" keyword to insmod, while replacing any ',' with
-';'.  For example:
-
-	insmod ide.o options="ide0=serialize ide1=serialize ide2=0x1e8;0x3ee;11"
-
-
-================================================================================
-
-Summary of ide driver parameters for kernel command line
---------------------------------------------------------
-
- "hdx="  is recognized for all "x" from "a" to "h", such as "hdc".
- 
- "idex=" is recognized for all "x" from "0" to "3", such as "ide1".
-
- "hdx=noprobe"		: drive may be present, but do not probe for it
- 
- "hdx=none"		: drive is NOT present, ignore cmos and do not probe
- 
- "hdx=nowerr"		: ignore the WRERR_STAT bit on this drive
- 
- "hdx=cdrom"		: drive is present, and is a cdrom drive
- 
- "hdx=cyl,head,sect"	: disk drive is present, with specified geometry
-
- "hdx=remap"		: remap access of sector 0 to sector 1 (for EZDrive)
-
- "hdx=remap63"		: remap the drive: add 63 to all sector numbers
-			  (for DM OnTrack)
-
- "idex=noautotune"	: driver will NOT attempt to tune interface speed
-
- "hdx=autotune"		: driver will attempt to tune interface speed
-			  to the fastest PIO mode supported,
-			  if possible for this drive only.
-			  Not fully supported by all chipset types,
-			  and quite likely to cause trouble with
-			  older/odd IDE drives.
-
- "hdx=nodma"		: disallow DMA
-
- "hdx=scsi"		: the return of the ide-scsi flag, this is useful for
- 			  allowing ide-floppy, ide-tape, and ide-cdrom|writers
- 			  to use ide-scsi emulation on a device specific option.
-
- "idebus=xx"		: inform IDE driver of VESA/PCI bus speed in MHz,
-			  where "xx" is between 20 and 66 inclusive,
-			  used when tuning chipset PIO modes.
-			  For PCI bus, 25 is correct for a P75 system,
-			  30 is correct for P90,P120,P180 systems,
-			  and 33 is used for P100,P133,P166 systems.
-			  If in doubt, use idebus=33 for PCI.
-			  As for VLB, it is safest to not specify it.
-			  Bigger values are safer than smaller ones.
-
- "idex=base"		: probe for an interface at the addr specified,
-			  where "base" is usually 0x1f0 or 0x170
-			  and "ctl" is assumed to be "base"+0x206
-			  
- "idex=base,ctl"	: specify both base and ctl
-
- "idex=base,ctl,irq"	: specify base, ctl, and irq number
-
- "idex=serialize"	: do not overlap operations on idex. Please note
-			  that you will have to specify this option for
-			  both the respective primary and secondary channel
-			  to take effect.
-
- "idex=four"		: four drives on idex and ide(x^1) share same ports
-			
- "idex=reset"		: reset interface after probe
-
- "idex=ata66"		: informs the interface that it has an 80c cable
-			  for chipsets that are ATA-66 capable, but the
-			  ability to bit test for detection is currently
-			  unknown.
-
- "ide=reverse"		: formerly called to pci sub-system, but now local.
-
-The following are valid ONLY on ide0, which usually corresponds
-to the first ATA interface found on the particular host, and the defaults for
-the base,ctl ports must not be altered.
-
- "ide=doubler"		: probe/support IDE doublers on Amiga
-
-There may be more options than shown -- use the source, Luke!
-
-Everything else is rejected with a "BAD OPTION" message.
-
-For legacy IDE VLB host drivers (ali14xx/dtc2278/ht6560b/qd65xx/umc8672)
-you need to explicitly enable probing by using "probe" kernel parameter,
-i.e. to enable probing for ALI M14xx chipsets (ali14xx host driver) use:
-
-* "ali14xx.probe" boot option when ali14xx driver is built-in the kernel
-
-* "probe" module parameter when ali14xx driver is compiled as module
-  ("modprobe ali14xx probe")
-
-Also for legacy CMD640 host driver (cmd640) you need to use "probe_vlb"
-kernel paremeter to enable probing for VLB version of the chipset (PCI ones
-are detected automatically).
-
-================================================================================
-
-Some Terminology
-----------------
-IDE = Integrated Drive Electronics, meaning that each drive has a built-in
-controller, which is why an "IDE interface card" is not a "controller card".
-
-ATA = AT (the old IBM 286 computer) Attachment Interface, a draft American
-National Standard for connecting hard drives to PCs.  This is the official
-name for "IDE".
-
-The latest standards define some enhancements, known as the ATA-6 spec,
-which grew out of vendor-specific "Enhanced IDE" (EIDE) implementations.
-
-ATAPI = ATA Packet Interface, a new protocol for controlling the drives,
-similar to SCSI protocols, created at the same time as the ATA2 standard.
-ATAPI is currently used for controlling CDROM, TAPE and FLOPPY (ZIP or
-LS120/240) devices, removable R/W cartridges, and for high capacity hard disk
-drives.
-
-mlord@pobox.com
---
-
-Wed Apr 17 22:52:44 CEST 2002 edited by Marcin Dalecki, the current
-maintainer.
-
-Wed Aug 20 22:31:29 CEST 2003 updated ide boot options to current ide.c
-comments at 2.6.0-test4 time. Maciej Soltysiak <solt@dns.toxicfilms.tv>