ATAZZ(8) ATAZZ(8) NAME atazz - ATA target control SYNOPSIS atazz [ -r ] [ sddev ] atazz -c cmd DESCRIPTION Atazz is an interactive program for exercising raw ATA devices. Its intended purpose is to support odd and admin- istrative commands without requiring this functionality be implemented by each device driver. It reads commands from standard input and applies them to an ATA target. Communi- cation is in SATA FIS format. Non-ATA devices accessed through the sd(3) interface will not work; ATAPI devices will respond to the commands in the ACS-2 packet feature set. If the -c option is given, the name of the given numeric ATA command is printed. sddev is given on the com- mand line, an open (see below) is immediately applied to the target. On completion of a command, any errors are printed followed by the prompt `az> '. The response FIS may be printed with the command rfis. Some commands like identify device print processed output by default. Redirecting the output to a file will give the raw output as will the -r flag. In addition the following commands are implemented internally < > <> file Redirect output, input or both to or from a file. If file is missing, then the redirection is closed. close Close the currently open device. dev Print device path and basic information. issuetr [ command ... ] Toggle command issue tracing. With no argu- ments, issuetr toggles tracing for all com- mands. Commands may be specified by number. open dev Open the named device. probe Print a list of available device paths, size, sector size and WWNs. The first column is a suitable argument for open. rfis Print the returned FIS, if any. For all commands, it is possible to manipulate the sata ATAZZ(8) ATAZZ(8) registers directly by specifying the register name and an 8-bit value. The registers are type FIS type flags FIS flags cmd command register feat or features lba0 or sector lba8 or cyl0 lba16 or cyl8 lba24 or dh or byte8 lba32 lba40 feat8 sc sector count sc8 r reserved FIS register In addition, commands that take an LBA and a number of sec- tors may be given those arguments directly, for example to read 1 sector starting at lba 100, az> read dma ext 100 1 Subcommands are spelled out as in ACS-2. For example, to set the transfer mode to UDMA 6, enable the write cache and to enable and report smart status, one would az> set features set transfer mode udma 6 az> set features enable write cache az> smart enable operations az> smart return status normal SCT pseudo-protocol commands are also supported. az> sct error recovery time set read timer = 5 az> sct error recovery time return read timer ATAZZ(8) ATAZZ(8) 500ms FILES /dev/sdXX/raw SOURCE /sys/src/cmd/atazz SEE ALSO scuzz(8), sd(3), smart(8), T13/2015 ACS-2 published online at http://www.t13.org. BUGS Subcommand help doesn't work. ACS-2 commands are tortuously verbose.