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Diffstat (limited to 'Documentation/nvme-show-regs.txt')
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diff --git a/Documentation/nvme-show-regs.txt b/Documentation/nvme-show-regs.txt new file mode 100644 index 0000000..892b394 --- /dev/null +++ b/Documentation/nvme-show-regs.txt @@ -0,0 +1,63 @@ +nvme-id-ns(1) +============= + +NAME +---- +nvme-show-regs - Reads and shows the defined NVMe controller registers for +NVMe over PCIe or the controller properties for NVMe over Fabrics. + +SYNOPSIS +-------- +[verse] +'nvme show-regs' <device> [--human-readable | -H] + [--output-format=<FMT> | -o <FMT>] + +DESCRIPTION +----------- +For the NVMe over PCIe device given, sends an identify namespace command and +provides the result and returned structure. +For the NVMe over Fabrics device given, sends a fabric command and provides +the result and returned structure. + +The <device> parameter is mandatory and must be the nvme admin character +device (ex: /dev/nvme0). For NVMe over PCIe, the program uses knowledge of the +sysfs layout to map the device to the pci resource stored there and mmaps the +memory to get access to the registers. For NVMe over Fabrics, the programs +sends a fabric command to get the properties of the target NVMe controller. +Only the supported properties are displayed. + +OPTIONS +------- +-H:: +--human-readable:: + Display registers or supported properties in human readable format. + +-o <format>:: +--output-format=<format>:: + Set the reporting format to 'normal', 'json', or + 'binary'. Only one output format can be used at a time. + +EXAMPLES +-------- +* Show the NVMe over PCIe controller registers or the NVMe over Fabric controller +properties in a binary format: ++ +------------ +# nvme show-regs /dev/nvme0 -o binary +------------ +* Show the NVMe over PCIe controller registers or the NVMe over Fabric controller +properties in a human readable format: ++ +------------ +# nvme show-regs /dev/nvme0 -H +------------ +* Show the NVMe over PCIe controller registers or NVMe-oF controller properties +in a json format: ++ +------------ +# nvme show-regs /dev/nvme0 -o json +------------ + +NVME +---- +Part of the nvme-user suite |