cfgadm_ac(1M)						  System Administration Commands					     cfgadm_ac(1M)

NAME

       cfgadm_ac - EXX00 memory system administration

SYNOPSIS

       /usr/sbin/cfgadm [-c configure] [-f]
	    [-o disable-at-boot | enable-at-boot ] ac#:bank# ...

       /usr/sbin/cfgadm [-c unconfigure]
	    [-o disable-at-bootp | enable-at-boot ] ac#:bank# ...

       /usr/sbin/cfgadm [-v]
	    [-o quick | normal | extended, [max_errors=#] ] -t ac#:bank#...

       /usr/sbin/cfgadm -x relocate-test ac#:bank# ...

       /usr/sbin/cfgadm [-l] -o disable-at-boot | enable-at-boot ac#:bank# ...

DESCRIPTION

       The ac hardware specific library /usr/platform/sun4u/lib/cfgadm/cfgadm_ac.so.1 provides the functionality for configuring and unconfiguring
       memory banks on E6X00, E5X00, E4X00 and E3X00 systems as part of the Dynamic Reconfiguration of CPU/Memory boards using cfgadm_sysctrl(1M).

       Memory banks appear as attachment points in the device tree. For each CPU/Memory board, two attachment points are published, one  for  each
       bank  on  the  board:  bank0 and bank1. If the bank is unpopulated, the receptacle state is empty. If the bank is populated, the receptacle
       state is connected. The receptacle state of a memory bank can never be disconnected. The occupant state of a connected memory bank  can	be
       configured or unconfigured. If the occupant state is configured, the memory is in use by Solaris, if unconfigured it is not.

OPTIONS

       Refer to cfgadm(1M) for complete descriptions of the command options.

       The following options are supported:

       -c configure | unconfigure

	   Change  the	occupant  state.  The  configure argument ensures that the memory is initialized and adds the memory to the Solaris memory
	   pool. The unconfigure argument removes the memory from use by Solaris. When a CPU/Memory board is to be removed  from  a  system,  both
	   banks of memory must be unconfigured.

	   cfgadm  refuses  the  configure  operation if the memory on the board is marked disabled-at-boot (see info field), unless either the -f
	   (force) option or the enable at boot flag, (-o enable-at-boot), is given. The configure operation takes a short  time  proportional	to
	   the size of memory that must be initialized.

	   cfgadm  refuses  the unconfigure operation  if there is not enough uncommitted memory in the system (VM viability error) or if the bank
	   to be unconfigured has memory that can't be removed (non-relocatable pages error). The presence of non-relocatable pages  is  indicated
	   by the word permanent in the info listing field. Removing memory from use by Solaris may take a significant time due to factors such as
	   system load and how much paging to secondary storage is required. The unconfigure operation can be cancelled at any time and the memory
	   returned  to the fully configured state by interrupting the command invocation with a signal. The unconfigure operation self-cancels if
	   no memory can be removed within a timeout period. The default timeout period of 60 seconds  can  be	changed  using	the  -o  timeout=#
	   option, with a value of 0 disabling the timeout.

       -f

	   Force  option.  Use	this option to override the block on configuring a memory bank marked as disabled at boot in the non-volatile dis-
	   abled-memory-list variable. See Platform Notes:Sun Enterprise 6x00/5x00/4x00/3x00 Systems

       -l

	   List option. This option is supported as described in cfgadm(1M).

	   The type field is always memory.

	   The info field has the following information for empty banks:

	     slot# empty

	   The slot# indicates the system slot into which the CPU/Memory board is inserted. For example, if this were slot11 the attachment  point
	   for	use  with  cfgadm  to manipulate the associated board would be sysctrl0:slot11.   The info field has the following information for
	   connected banks:

	     slot# sizeMb|sizeGb [(sizeMb|sizeGb used)] base 0x###
		   [interleaved #-way] [disabled at boot] [permanent]

	   The size of the bank is given in Mb or Gb as appropriate. If the memory is less than completely used, the used size	is  reported.  The
	   physical  base  address  is	given  in  hexadecimal.  If  the memory bank is interleaved with some other bank, the interleave factor is
	   reported. If the memory on the board is disabled at boot using the non-volatile disabled-memory-list variable, this is reported. If the
	   bank has memory that cannot be removed this is reported as permanent.

       -o disable-at-boot | enable-at-boot

	   These  options  allow the state of the non-volatile disabled-memory-list variable to be modified. These options can be used in conjunc-
	   tion with the issuing of a -c option or with the explicit or implied listing command, -l, if no command is required. Use of -o  enable-
	   at-boot with the configure command to override the block on configuring memory on a board in the disabled memory list.

       -o extended | normal | quick

	   Use with the -t option to specify test level.

	   The	normal test level ensures that each memory cell stores both a 0 and a 1, and checks that all cells are separately addressable. The
	   quick test level only does the 0s and 1s test, and typically misses address line problems. The extended test uses patterns to test  for
	   adjacent cell interference problems.  The default test level is normal. See -t option.

       -o max_errors=#

	   Use with the -t option to specify the maximum number of allowed errors. If not specified, a default of 32 is assumed.

       -o timeout=#

	   Use	with  the  unconfigure	command  to set the self-cancelling timeout. The default value is 60 and the unit is seconds. A value of 0
	   means no timeout.

       -t

	   Test an unconfigured bank of memory. Specify the test level using the -o quick | normal | extended option.

	   cfgadm exits with a 0 (success) if the test was able to run on the memory bank. The result of the test is available	in  the  condition
	   for the attachment point.

       -v

	   Verbose option. Use this option in combination with	       the -t option to display detailed progress and results of tests.

       -x relocate-test

	   For	all  pages  of memory in use on the specified memory bank, a relocation operation as used in the unconfigure command is attempted.
	   The success of this operation does not guarantee that the bank can be unconfigured. Failure indicates that it probably cannot be uncon-
	   figured. This option is for test purposes only.

OPERANDS

       The following operand is supported:

       ac#:bank#    The attachment points for memory banks are published by instances of the address controller (ac) driver (ac#). One instance of
		    the ac driver is created for each system board, but only those instances associated with CPU/Memory  boards  publish  the  two
		    bank attachment points, bank0 and bank1.

		     This  form  conforms  to the logical ap_id specification given in cfgadm(1M). The corresponding physical ap_ids are listed in
		    the FILES section.

		    The ac driver instance numbering has no relation to the slot number for the     corresponding board. The full physical attach-
		    ment  point identifier has the slot number incorporated into it as twice the slot number in hexadecimal directly following the
		    fhc@ part.

FILES

       /devices/fhc@*,f8800000/ac@0,1000000:bank?

	   attachment points

       /usr/platform/sun4u/lib/cfgadm/cfgadm_ac.so.1

	   hardware specific library file

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWkvm.u 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cfgadm(1M), cfgadm_sysctrl(1M),	config_admin(3CFGADM), attributes(5)

       Sun Enterprise 6x00, 5x00, 4x00 and 3x00 Systems Dynamic Reconfiguration User's Guide

       Platform Notes:Sun Enterprise 6x00/5x00/4x00/3x00 Systems

NOTES

       Refer to the Sun Enterprise 6x00, 5x00, 4x00 and 3x00 Systems Dynamic Reconfiguration User's Guide for additional details regarding dynamic
       reconfiguration of EXX00 system CPU/Memory boards.

SunOS 5.11							    29 Sep 1999 						     cfgadm_ac(1M)