Adding upstream version 2.4+really2.3.upstream/2.4+really2.3upstream

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

1 files changed, 153 insertions, 0 deletions

diff --git a/Documentation/nvme-read.txt b/Documentation/nvme-read.txt
new file mode 100644
index 0000000..1757fd3
--- /dev/null
+++ b/Documentation/nvme-read.txt
@@ -0,0 +1,153 @@
+nvme-read(1)
+============
+
+NAME
+----
+nvme-read - Send an NVMe Read command, provide results
+
+SYNOPSIS
+--------
+[verse]
+'nvme-read' <device> [--start-block=<slba> | -s <slba>]
+			[--block-count=<nlb> | -c <nlb>]
+			[--data-size=<size> | -z <size>]
+			[--metadata-size=<size> | -y <size>]
+			[--ref-tag=<reftag> | -r <reftag>]
+			[--data=<data-file> | -d <data-file>]
+			[--metadata=<metadata-file> | -M <metadata-file>]
+			[--prinfo=<prinfo> | -p <prinfo>]
+			[--app-tag-mask=<appmask> | -m <appmask>]
+			[--app-tag=<apptag> | -a <apptag>]
+			[--limited-retry | -l]
+			[--force-unit-access | -f]
+			[--dir-type=<type> | -T <type>]
+			[--dir-spec=<spec> | -S <spec>]
+			[--dsm=<dsm> | -D <dsm>]
+			[--show-command | -v]
+			[--dry-run | -w]
+			[--latency | -t]
+			[--storage-tag<storage-tag> | -g <storage-tag>]
+			[--storage-tag-check<storage-tag-check> | -C <storage-tag-check>]
+			[--force]
+
+DESCRIPTION
+-----------
+The Read command reads the logical blocks specified by the command from
+the medium and copies to the data data buffer provided. Will use stdout
+by default if you don't provide a file.
+
+OPTIONS
+-------
+--start-block=<slba>::
+-s <slba>::
+	Start block.
+
+--block-count::
+-c::
+	The number of blocks to transfer. This is a zeroes based value to
+	align with the kernel's use of this field. (ie. 0 means transfer
+	1 block).
+
+--data-size=<size>::
+-z <size>::
+	Size of data, in bytes.
+
+--metadata-size=<size>::
+-y <size>::
+	Size of metadata in bytes.
+
+--data=<data-file>::
+-d <data-file>::
+	Data file. If none provided, contents are sent to STDOUT.
+
+--metadata=<metadata-file>::
+-M <metadata-file>::
+	Metadata file, if necessary.
+
+--prinfo=<prinfo>::
+-p <prinfo>::
+	Protection Information field definition.
++
+[]
+|=================
+|Bit|Description
+|3|PRACT: Protection Information Action. When set to 1, PI is stripped/inserted
+on read/write when the block format's metadata size is 8. When set to 0,
+metadata is passes.
+|2:0|PRCHK: Protection Information Check:
+|2|Set to 1 enables checking the guard tag
+|1|Set to 1 enables checking the application tag
+|0|Set to 1 enables checking the reference tag
+|=================
+
+--ref-tag=<reftag>::
+-r <reftag>::
+	Optional reftag when used with protection information.
+
+--app-tag-mask=<appmask>::
+-m <appmask>::
+	Optional application tag mask when used with protection information.
+
+--force-unit-access::
+-f::
+	Set the force-unit access flag.
+
+-T <type>::
+--dir-type=<type>::
+	Optional directive type. The nvme-cli only enforces the value
+	be in the defined range for the directive type, though the NVMe
+	specification (1.3a) defines only one directive, 01h, for write
+	stream identifiers.
+
+-S <spec>::
+--dir-spec=<spec>::
+	Optional field for directive specifics. When used with
+	write streams, this value is defined to be the write stream
+	identifier. The nvme-cli will not validate the stream requested
+	is within the controller's capabilities.
+
+-D <dsm>::
+--dsm=<dsm>::
+	The optional data set management attributes for this command. The argument
+	for this is the least significant 8 bits of the DSM field in a write
+	command; the most significant 16 bits of the field come from the directive
+	specific field, if used. This may be used to set attributes for
+	the LBAs being written, like access frequency, type, latency,
+	among other things, as well as yet to be defined types. Please
+	consult the NVMe specification for detailed breakdown of how to
+	use this field.
+
+-v::
+--show-cmd::
+	Print out the command to be sent.
+
+-w::
+--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_.
+
+-t::
+--latency::
+	Print out the latency the IOCTL took (in us).
+
+--storage-tag=<storage-tag>::
+-g <storage-tag>::
+	Variable Sized Expected Logical Block Storage Tag(ELBST).
+
+--storage-tag-check=<storage-tag-check>::
+-C <storage-tag-check>::
+	This bit specifies the Storage Tag field shall be checked as part of end-to-end
+	data protection processing.
+
+--force::
+    Ignore namespace is currently busy and performed the operation
+    even though.
+
+EXAMPLES
+--------
+No examples yet.
+
+NVME
+----
+Part of the nvme-user suite