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authorRalf Baechle <ralf@linux-mips.org>1999-09-28 22:25:29 +0000
committerRalf Baechle <ralf@linux-mips.org>1999-09-28 22:25:29 +0000
commit0ae8dceaebe3659ee0c3352c08125f403e77ebca (patch)
tree5085c389f09da78182b899d19fe1068b619a69dd /Documentation/cpqarray.txt
parent273767781288c35c9d679e908672b9996cda4c34 (diff)
Merge with 2.3.10.
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+This driver is for Compaq's SMART2 Intellegent Disk Array Controllers.
+
+WARNING:
+--------
+
+This driver comes with NO WARRANTY. It is not officially supported by
+Compaq. Do not call technical support. Use at your own risk.
+
+Supported Cards:
+----------------
+
+This driver is known to work with the following cards:
+
+ * SMART (EISA)
+ * SMART-2/E (EISA)
+ * SMART-2/P
+ * SMART-2DH
+ * SMART-2SL
+ * SMART-221
+ * SMART-3100ES
+ * SMART-3200
+ * Integrated Smart Array Controller
+ * SA 4200
+ * SA 4250ES
+
+It should also work with some really old Disk array adapters, but I am
+unable to test against these cards:
+
+ * IDA
+ * IDA-2
+ * IAES
+
+Installing:
+-----------
+
+You need to build a new kernel to use this device, even if you want to
+use a loadable module.
+
+Apply the patch to a 2.2.x kernel:
+
+# cd linux
+# patch -p1 <smart2.patch
+
+Then build a new kernel and turn on Compaq SMART2 Disk Array support.
+Create device nodes for the diskarray device:
+
+# mkdev.ida [ctlrs]
+
+Where ctlrs is the number of controllers you have (defaults to 1 if not
+specified).
+
+EISA Controllers:
+-----------------
+
+If you want to use an EISA controller you'll have to supply some
+insmod/lilo paramaters. If the driver is compiled into the kernel, must
+give it the controller's IO port address at boot time (it is no longer
+necessary to specifiy the IRQ). For example, if you had two SMART-2/E
+controllers, in EISA slots 1 and 2 you'd give it a boot argument like
+this:
+
+ smart2=0x1000,0x2000
+
+If you were loading the driver as a module, you'd give load it like this:
+
+ insmod cpqarray.o eisa=0x1000,0x2000
+
+You can use EISA and PCI adapters at the same time.
+
+Booting:
+--------
+
+You'll need to use a modified lilo if you want to boot from a disk array.
+Its simply a version of lilo with some code added to tell it how to
+understand Compaq diskarray devices.
+
+Device Naming:
+--------------
+
+You need some entries in /dev for the ida device. The mkdev.ida script
+can make device nodes for you automatically. Currently the device setup
+is as follows:
+
+Major numbers:
+ 72 ida0
+ 73 ida1
+ 74 ida2
+ etc...
+
+Minor numbers:
+ b7 b6 b5 b4 b3 b2 b1 b0
+ |----+----| |----+----|
+ | |
+ | +-------- Partition ID (0=wholedev, 1-15 partition)
+ |
+ +-------------------- Logical Volume number
+
+The suggested device naming scheme is:
+/dev/ida/c0d0 Controller 0, disk 0, whole device
+/dev/ida/c0d0p1 Controller 0, disk 0, partition 1
+/dev/ida/c0d0p2 Controller 0, disk 0, partition 2
+/dev/ida/c0d0p3 Controller 0, disk 0, partition 3
+
+/dev/ida/c1d1 Controller 1, disk 1, whole device
+/dev/ida/c1d1p1 Controller 1, disk 1, partition 1
+/dev/ida/c1d1p2 Controller 1, disk 1, partition 2
+/dev/ida/c1d1p3 Controller 1, disk 1, partition 3