smp_write_gpio man page on SuSE
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SMP_WRITE_GPIO(8) SMP_UTILS SMP_WRITE_GPIO(8)
NAME
smp_write_gpio - invoke WRITE GPIO REGISTER SMP function
SYNOPSIS
smp_write_gpio [--count=CO] [--data=H,H...] [--help] [--hex]
[--index=IN] [--interface=PARAMS] [--raw] [--sa=SAS_ADDR] [--type=TY]
[--verbose] [--version] SMP_DEVICE[,N]
DESCRIPTION
Sends a SAS Management Protocol (SMP) WRITE GPIO REGISTER request func‐
tion to a SMP target. The SMP target is identified by the SMP_DEVICE
and the SAS_ADDR. Depending on the interface, the SAS_ADDR may be
deduced from the SMP_DEVICE. With one interface there is one SMP_DEVICE
per machine so the SMP_DEVICE,N syntax is needed to differentiate
between HBAs if there are multiple present.
This function is defined in SFF-8485 ( see www.sffcommittee.com )
together with its corresponding READ GPIO REGISTER SMP function. The
other SMP functions are defined in SAS documents at www.t10.org .
SFF-8485 defines a curious device called a "virtual SMP port" that
lives in a host bus adapter (HBA) and allows SMP to manipulate the
sideband signals in wide internal cables. To stop other initiators in a
multi-initiator domain from accessing those sideband signals, the vir‐
tual SMP (target) port is not indicated in a DISCOVER response.
-c, --count=CO
where CO is the register count. This is the number of (4 byte)
registers to send. The default value is 1.
-d, --data=H,H...
this option supplies a comma separated list of hexadecimal bytes
(0 to ff inclusive) that will be used as write data in the WRITE
GPIO REGISTER request. The number of bytes supplied should be
four times --count=C The first 4 bytes will become the first
register written.
-d, --data=-
reads string of hexadecimal bytes from stdin. Spaces, tabs and
line feeds additionally are permitted as separators.
-h, --help
output the usage message then exit.
-H, --hex
output the response in hexadecimal.
-i, --index=IN
where IN is the register index. This value is origin zero and
its default value is 0. The request will send --count=CO regis‐
ters starting from --index=IN of the given --type=TY.
-I, --interface=PARAMS
interface specific parameters. In this case "interface" refers
to the path through the operating system to the SMP initiator.
See the smp_utils man page for more information.
-r, --raw
send the response to stdout in binary. All error messages are
sent to stderr.
-s, --sa=SAS_ADDR
specifies the SAS address of the SMP target device. Typically
this is an expander. This option may not be needed if the
SMP_DEVICE has the target's SAS address within it. The SAS_ADDR
is in decimal but most SAS addresses are shown in hexadecimal.
To give a number in hexadecimal either prefix it with '0x' or
put a trailing 'h' on it.
-t, --type=TY
where TY is the register type. The default value is 0
(GPIO_CFG). The request will send --count=CO registers starting
from --index=IN of the given --type=TY.
-v, --verbose
increase the verbosity of the output. Can be used multiple
times.
-V, --version
print the version string and then exit.
CONFORMING TO
The SMP WRITE GPIO REGISTER function is defined in SFF-8485 (see
www.sffcommittee.com ) together with its corresponding READ GPIO REGIS‐
TER SMP function.
AUTHORS
Written by Douglas Gilbert.
REPORTING BUGS
Report bugs to <dgilbert at interlog dot com>.
COPYRIGHT
Copyright © 2006-2008 Douglas Gilbert
This software is distributed under a FreeBSD license. There is NO war‐
ranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR‐
POSE.
SEE ALSO
smp_utils, smp_read_gpio(smp_utils)
smp_utils-0.93 January 2008 SMP_WRITE_GPIO(8)
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