Adding upstream version 2.8.upstream/2.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 138 insertions, 0 deletions

diff --git a/Documentation/nvme-io-passthru.txt b/Documentation/nvme-io-passthru.txt
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+nvme-io-passthru(1)
+===================
+
+NAME
+----
+nvme-io-passthru - Submit an arbitrary io command, return results
+
+SYNOPSIS
+--------
+[verse]
+'nvme-io-passthru' <device> [--opcode=<opcode> | -O <opcode>]
+			[--flags=<flags> | -f <flags>] [-rsvd=<rsvd> | -R <rsvd>]
+			[--namespace-id=<nsid> | -nsid <nsid>]
+			[--cdw2=<cdw2>] [--cdw3=<cdw3>] [--cdw10=<cdw10>]
+			[--cdw11=<cdw11>] [--cdw12=<cdw12>] [--cdw13=<cdw13>]
+			[--cdw14=<cdw14>] [--cdw15=<cdw15>]
+			[--data-len=<data-len> | -l <data-len>]
+			[--metadata-len=<len> | -m <len>]
+			[--read | -r] [--write | -w]
+			[--input-file=<file> | -i <file>]
+			[--metadata=<file> | -M <file>]
+			[--timeout=<to> | -t <to>] [--show-command | -s]
+			[--dry-run | -d] [--raw-binary | -b]
+			[--prefill=<prefill> | -p <prefill>]
+			[--latency | -T]
+			[--output-format=<fmt> | -o <fmt>] [--verbose | -v]
+
+DESCRIPTION
+-----------
+Submits an arbitrary NVMe IO command and returns the applicable
+results. This may be the simply the command's result and status, or may
+also include a buffer if the command returns one. This command does no
+interpretation of the opcodes or options.
+
+The <device> parameter is mandatory and may be either the NVMe character
+device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).
+
+On success, the returned structure (if applicable) may be returned in
+one of several ways depending on the option flags; the structure may
+printed by the program as a hex dump, or may be returned as a raw buffer
+printed to stdout for another program to parse.
+
+OPTIONS
+-------
+-O <opcode>::
+--opcode=<opcode>::
+	The NVMe opcode to send to the device in the command
+
+-f <flags>::
+--flags=<flags>::
+	The NVMe command flags to send to the device in the command
+
+-R <rsvd>::
+--rsvd=<rsvd>::
+	The value for the reserved field in the command.
+
+-n <nsid>::
+--namespace-id=<nsid>::
+	The value for the ns-id in the command. Defaults to '0'.
+
+--cdw[2-3,10-15]=<cdw>::
+	Specifies the command dword value for that specified entry in
+	the command
+
+-r::
+--read::
+-w::
+--write::
+	Used for the data-direction for the command and required for
+	commands sending/receiving data. Don't use both read and write
+	at the same time.
+
+-i <file>::
+--input-file=<file>::
+	If the command is a data-out (write) command, use this file
+	to fill the buffer sent to the device. If no file is given, assumed to
+	use STDIN. If the command is a data-in (read) command, the data
+	returned from the device will be saved here.
+
+-M <file>::
+--metadata=<file>::
+	If the command is a data-out (write) command, use this file
+	to fill the metadata buffer sent to the device. If no file is given,
+	assumed to use STDIN. If the command is a data-in (read) command, the
+	metadata returned from the device will be saved here.
+
+-l <data-len>::
+--data-len=<data-len>::
+	The data length for the buffer used for this command.
+
+-m <data-len>::
+--metadata-len=<data-len>::
+	The metadata length for the buffer used for this command.
+
+-s::
+--show-cmd::
+	Print out the command to be sent.
+
+-d::
+--dry-run::
+	Do not actually send the command. If want to use --dry-run option,
+	--show-cmd option _must_ be set. Otherwise --dry-run option will be
+	_ignored_.
+
+-b::
+--raw-binary::
+	Print the raw returned buffer to stdout if the command returns
+	data or a structure.
+
+-p <prefill>::
+--prefill <prefill>::
+	Prefill the buffer with a predetermined byte value. Defaults to 0.
+	This may be useful if the data you are writing is shorter
+	than the required buffer, and you need to pad it with a known
+	value. It may also be useful if you need to confirm if a device
+	is overwriting a buffer on a data-in command.
+
+-T::
+--latency::
+	Print out the latency the IOCTL took (in us).
+
+-o <fmt>::
+--output-format=<fmt>::
+	Set the reporting format to 'normal', 'json' or 'binary'. Only one
+	output format can be used at a time.
+
+-v::
+--verbose::
+	Increase the information detail in the output.
+
+EXAMPLES
+--------
+
+nvme io-passthru /dev/nvme0n1 --opcode=2 --namespace-id=1 --data-len=4096 --read --cdw10=0 --cdw11=0 --cdw12=0x70000 --raw-binary
+
+NVME
+----
+Part of the nvme-user suite