smp_phy_test man page on Fedora
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SMP_PHY_TEST(8) SMP_UTILS SMP_PHY_TEST(8)
NAME
smp_phy_test - invoke PHY TEST FUNTION SMP function
SYNOPSIS
smp_phy_test [--control=CO] [--dwords=DW] [--expected=EX] [--func‐
tion=FN] [--help] [--hex] [--interface=PARAMS] [--linkrate=LR] [--pat‐
tern=PA] [--phy=ID] [--raw] [--sa=SAS_ADDR] [--sata] [--spread=SC]
[--verbose] [--version] SMP_DEVICE[,N]
DESCRIPTION
Sends a SAS Management Protocol (SMP) PHY TEST FUNCTION function
request 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. The mpt interface uses SMP_DEVICE to iden‐
tify a HBA (an SMP initiator) and needs the additional ,N to differen‐
tiate between HBAs if there are multiple present.
The PHY TEST FUNCTION function can be used to start and stop test pat‐
tern transmission. When a phy associated with a SMP target (most likely
an expander) starts test pattern transmission then the attached phy (if
there is one) sees a link down.
SAS phys associated with SSP targets (e.g. a SAS disk) can generate
similar test patterns by using the SEND DIAGNOSTIC SCSI command with
page code 3fh . See the sg_senddiag utility.
OPTIONS
Mandatory arguments to long options are mandatory for short options as
well.
-c, --control=CO
set the 'phy test pattern dwords control' field. The argument CO
can be from 0 to 255 inclusive, the default is 0 (each byte in
'dwords' sent as data byte (Dxx.y) without scrambling). Only
active when 'pattern' is set to 40h (i.e. "two_dwords").
-d, --dwords=DW
set the 'phy test pattern dwords' field which is 8 bytes long.
The argument DW would normally be entered in hex with a leading
'0x' or a trailing 'h' (otherwise it would be interpreted as
decimal). Due to a quirk in the command line parser, the argu‐
ment value ffffffffffffffffh (i.e. all bits sets) needs to be
entered as '-1'.
-E, --expected=EX
set the 'expected expander change count' field in the SMP
request. The value EX is from 0 to 65535 inclusive with 0 being
the default value. When EX is greater than zero then if the
value doesn't match the expander change count of the SMP target
(i.e. the expander) when the request arrives then the target
ignores the request and sets a function result of "invalid
expander change count" in the response.
-f, --function=FN
set the 'phy test function' field in the SMP request. Values
between 0 and 255 are accepted with the default being 0. The
value 0 stops the selected phy performing a phy test function.
The value 1 starts the selected phy transmitting the test pat‐
tern (and anything that the phy receives is discarded).
-h, --help
output the usage message then exit.
-H, --hex
output the response (less the CRC field) in hexadecimal.
-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.
-l, --linkrate=LR
transmits the test pattern at the specified physical link rate:
8 -> 1.5 Gbps, 9 -> 3 Gbps, 10 -> 6 Gbps, 11 -> 12 Gbps. Default
value is 9.
-P, --pattern=PA
specifies the type of test pattern to transmit. SAS-2 (rev15)
values are: 1 -> JTPAT, 2 -> CJTPAT, 10h -> TRAIN, 11h ->
TRAIN_DONE, 12h -> IDLE, 13h -> SCRAMBLED_0, 40h ->
"two_dwords". Default value is 2.
-p, --phy=ID
phy identifier. ID is a value between 0 and 254. Default is 0.
-r, --raw
send the response (less the CRC field) 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, --sata
set phy test function SATA bit. The default action is to leave
that bit clear (zero).
-S, --spread=SC
set the phy test function Spread Spectrum Clocking (SSC) field
to SC. Default value is zero (no spreading). Other defined val‐
ues are 1 for centre spreading and 2 for down spreading.
-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 PHY TEST function was introduced in SAS-1.1 and enhanced in
SAS-2 .
AUTHORS
Written by Douglas Gilbert.
REPORTING BUGS
Report bugs to <dgilbert at interlog dot com>.
COPYRIGHT
Copyright © 2006-2011 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, sg_senddiag(sg3_utils)
smp_utils-0.96 May 2011 SMP_PHY_TEST(8)
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