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authorLinus Torvalds <torvalds@linux-foundation.org>2008-04-18 08:39:24 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-04-18 08:39:24 -0700
commit188da98800893691e47eea9335a234378e32aceb (patch)
tree57dbf491d23676e011b4946ec1867a6d55a02eef /Documentation
parent07fe944e87d79f8d7e1b090913fe9f2ace78f41d (diff)
parent273b8385e5817a4765f82257004c5ec661a6a5b2 (diff)
downloadop-kernel-dev-188da98800893691e47eea9335a234378e32aceb.zip
op-kernel-dev-188da98800893691e47eea9335a234378e32aceb.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (58 commits) ide: remove ide_init_default_irq() macro ide: move default IDE ports setup to ide_generic host driver ide: remove obsoleted "idex=noprobe" kernel parameter (take 2) ide: remove needless hwif->irq check from ide_hwif_configure() ide: init hwif->{io_ports,irq} explicitly in legacy VLB host drivers ide: limit legacy VLB host drivers to alpha, x86 and mips cmd640: init hwif->{io_ports,irq} explicitly cmd640: cleanup setup_device_ptrs() ide: add ide-4drives host driver (take 3) ide: remove ppc ifdef from init_ide_data() ide: remove ide_default_io_ctl() macro ide: remove CONFIG_IDE_ARCH_OBSOLETE_INIT ide: add CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS (take 2) ppc/pmac: remove no longer needed IDE quirk ppc: don't include <linux/ide.h> ppc: remove ppc_ide_md ppc/pplus: remove ppc_ide_md.ide_init_hwif hook ppc/sandpoint: remove ppc_ide_md hooks ppc/lopec: remove ppc_ide_md hooks ppc/mpc8xx: remove ppc_ide_md hooks ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ide/ide.txt47
-rw-r--r--Documentation/ide/warm-plug-howto.txt13
-rw-r--r--Documentation/kernel-parameters.txt4
3 files changed, 19 insertions, 45 deletions
diff --git a/Documentation/ide/ide.txt b/Documentation/ide/ide.txt
index 818676a..486c699 100644
--- a/Documentation/ide/ide.txt
+++ b/Documentation/ide/ide.txt
@@ -71,29 +71,6 @@ 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
@@ -184,13 +161,6 @@ 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
@@ -206,7 +176,7 @@ 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"
+ insmod ide.o options="hda=nodma hdb=nodma"
================================================================================
@@ -247,21 +217,11 @@ Summary of ide driver parameters for kernel command line
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
@@ -269,8 +229,6 @@ Summary of ide driver parameters for kernel command line
ability to bit test for detection is currently
unknown.
- "ide=reverse" : formerly called to pci sub-system, but now local.
-
"ide=doubler" : probe/support IDE doublers on Amiga
There may be more options than shown -- use the source, Luke!
@@ -290,6 +248,9 @@ 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).
+You also need to use "probe" kernel parameter for ide-4drives driver
+(support for IDE generic chipset with four drives on one port).
+
================================================================================
Some Terminology
diff --git a/Documentation/ide/warm-plug-howto.txt b/Documentation/ide/warm-plug-howto.txt
new file mode 100644
index 0000000..d588546
--- /dev/null
+++ b/Documentation/ide/warm-plug-howto.txt
@@ -0,0 +1,13 @@
+
+IDE warm-plug HOWTO
+===================
+
+To warm-plug devices on a port 'idex':
+
+# echo -n "1" > /sys/class/ide_port/idex/delete_devices
+
+unplug old device(s) and plug new device(s)
+
+# echo -n "1" > /sys/class/ide_port/idex/scan
+
+done
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index c867f50..cd6f464 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -763,11 +763,11 @@ and is between 256 and 4096 characters. It is defined in the file
Format: <io>[,<membase>[,<icn_id>[,<icn_id2>]]]
ide= [HW] (E)IDE subsystem
- Format: ide=nodma or ide=doubler or ide=reverse
+ Format: ide=nodma or ide=doubler
See Documentation/ide/ide.txt.
ide?= [HW] (E)IDE subsystem
- Format: ide?=noprobe or chipset specific parameters.
+ Format: ide?=ata66 or chipset specific parameters.
See Documentation/ide/ide.txt.
idebus= [HW] (E)IDE subsystem - VLB/PCI bus speed
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