grub2/include/grub/ieee1275
Daniel Kiper c422bb6019 ieee1275: no-data-command bus specific method
IEEE 1275-1994 Standard for Boot (Initialization Configuration)
Firmware: Core Requirements and Practices

E.3.2.2 Bus-specific methods for bus nodes

A package implementing the scsi-2 device type shall implement the
following bus-specific method:

no-data-command ( cmd-addr -- error? )
Executes a simple SCSI command, automatically retrying under
certain conditions.  cmd-addr is the address of a 6-byte command buffer
containing an SCSI command that does not have a data transfer phase.
Executes the command, retrying indefinitely with the same retry criteria
as retry-command.

error? is nonzero if an error occurred, zero otherwise.
NOTE no-data-command is a convenience function. It provides
no capabilities that are not present in retry-command, but for
those commands that meet its restrictions, it is easier to use.

Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
2018-03-05 15:11:18 +01:00
..
console.h Allow IEEE1275 ports on path even if it wasn't detected automatically. 2013-04-14 17:01:31 +02:00
ieee1275.h ieee1275: no-data-command bus specific method 2018-03-05 15:11:18 +01:00
ofdisk.h Don't continue to query block-size if disk doesn't have it. 2015-03-03 20:50:37 +01:00