LXR linux-old/Documentation/cpqarray.txt

   1This driver is for Compaq's SMART2 Intellegent Disk Array Controllers.
   2
   3Supported Cards:
   4----------------
   5
   6This driver is known to work with the following cards:
   7
   8        * SMART (EISA)
   9        * SMART-2/E (EISA)
  10        * SMART-2/P
  11        * SMART-2DH
  12        * SMART-2SL
  13        * SMART-221
  14        * SMART-3100ES
  15        * SMART-3200
  16        * Integrated Smart Array Controller
  17        * SA 4200
  18        * SA 4250ES
  19        * SA 431
  20
  21It should also work with some really old Disk array adapters, but I am
  22unable to test against these cards:
  23
  24        * IDA
  25        * IDA-2
  26        * IAES
  27
  28Installing:
  29-----------
  30
  31You need to build a new kernel to use this device, even if you want to
  32use a loadable module.  
  33
  34Apply the patch to a 2.2.x kernel:
  35
  36# cd linux
  37# patch -p1 <smart2.patch
  38
  39Then build a new kernel and turn on Compaq SMART2 Disk Array support.
  40Create device nodes for the diskarray device:
  41
  42# mkdev.ida [ctlrs]
  43
  44Where ctlrs is the number of controllers you have (defaults to 1 if not
  45specified).
  46
  47EISA Controllers:
  48-----------------
  49
  50If you want to use an EISA controller you'll have to supply some
  51insmod/lilo paramaters.  If the driver is compiled into the kernel, must
  52give it the controller's IO port address at boot time (it is no longer
  53necessary to specifiy the IRQ).  For example, if you had two SMART-2/E
  54controllers, in EISA slots 1 and 2 you'd give it a boot argument like
  55this:
  56
  57        smart2=0x1000,0x2000
  58
  59If you were loading the driver as a module, you'd give load it like this:
  60
  61        insmod cpqarray.o eisa=0x1000,0x2000
  62
  63You can use EISA and PCI adapters at the same time.
  64
  65Booting:
  66--------
  67
  68You'll need to use a modified lilo if you want to boot from a disk array.
  69Its simply a version of lilo with some code added to tell it how to
  70understand Compaq diskarray devices.
  71
  72Device Naming:
  73--------------
  74
  75You need some entries in /dev for the ida device.  The mkdev.ida script
  76can make device nodes for you automatically.  Currently the device setup
  77is as follows:
  78
  79Major numbers:
  80        72      ida0
  81        73      ida1
  82        74      ida2
  83        etc...
  84
  85Minor numbers:
  86        b7 b6 b5 b4 b3 b2 b1 b0
  87        |----+----| |----+----|
  88             |           |
  89             |           +-------- Partition ID (0=wholedev, 1-15 partition)
  90             |
  91             +-------------------- Logical Volume number
  92
  93The suggested device naming scheme is:
  94/dev/ida/c0d0           Controller 0, disk 0, whole device
  95/dev/ida/c0d0p1         Controller 0, disk 0, partition 1
  96/dev/ida/c0d0p2         Controller 0, disk 0, partition 2
  97/dev/ida/c0d0p3         Controller 0, disk 0, partition 3
  98
  99/dev/ida/c1d1           Controller 1, disk 1, whole device
 100/dev/ida/c1d1p1         Controller 1, disk 1, partition 1
 101/dev/ida/c1d1p2         Controller 1, disk 1, partition 2
 102/dev/ida/c1d1p3         Controller 1, disk 1, partition 3
 103