.TH "nvme_init_fw_download" 9 "nvme_init_fw_download" "October 2026" "libnvme API manual" LINUX
.SH NAME
nvme_init_fw_download \- Initialize passthru command to download part or all of a firmware image to the controller
.SH SYNOPSIS
.B "int" nvme_init_fw_download
.BI "(struct libnvme_passthru_cmd *cmd "  ","
.BI "void *data "  ","
.BI "__u32 len "  ","
.BI "__u32 offset "  ");"
.SH ARGUMENTS
.IP "cmd" 12
Passthru command to use
.IP "data" 12
Userspace address of the firmware data buffer
.IP "len" 12
Length of data in this command in bytes
.IP "offset" 12
Offset in the firmware data
.SH "DESCRIPTION"
Initializes the passthru command buffer for the Firmware Image
Download command.
.SH "NOTE"
Caller must ensure data_len and offset are DWord-aligned (0x4).
.SH "RETURN"
0 on success, negative error code otherwise.