Commit 845c5834 authored by Douglas Gilbert's avatar Douglas Gilbert Committed by Jeff Garzik
Browse files

[libata scsi] add ata_scsi_set_sense helper 



  - add extern ata_scsi_set_sense() to build SCSI
    fixed sense data and corresponding SCSI status

Signed-off-by: default avatarDouglas Gilbert <dougg@torque.net>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
parent d9530075

drivers/scsi/libata-scsi.c

+28 −0
Original line number Diff line number Diff line
@@ -1450,6 +1450,34 @@ unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf, 
	return 0;

}



/**

 *	ata_scsi_set_sense - Set SCSI sense data and status

 *	@cmd: SCSI request to be handled

 *	@sk: SCSI-defined sense key

 *	@asc: SCSI-defined additional sense code

 *	@ascq: SCSI-defined additional sense code qualifier

 *

 *	Helper function that builds a valid fixed format, current

 *	response code and the given sense key (sk), additional sense

 *	code (asc) and additional sense code qualifier (ascq) with

 *	a SCSI command status of %SAM_STAT_CHECK_CONDITION and

 *	DRIVER_SENSE set in the upper bits of scsi_cmnd::result .

 *

 *	LOCKING:

 *	Not required

 */



void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)

{

	cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;



	cmd->sense_buffer[0] = 0x70;	/* fixed format, current */

	cmd->sense_buffer[2] = sk;

	cmd->sense_buffer[7] = 18 - 8;	/* additional sense length */

	cmd->sense_buffer[12] = asc;

	cmd->sense_buffer[13] = ascq;

}



/**

 *	ata_scsi_badcmd - End a SCSI request with an error

 *	@cmd: SCSI request to be handled

drivers/scsi/libata.h

+2 −0
Original line number Diff line number Diff line
@@ -80,6 +80,8 @@ extern unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf, 
extern void ata_scsi_badcmd(struct scsi_cmnd *cmd,

			    void (*done)(struct scsi_cmnd *),

			    u8 asc, u8 ascq);

extern void ata_scsi_set_sense(struct scsi_cmnd *cmd,

			       u8 sk, u8 asc, u8 ascq);

extern void ata_scsi_rbuf_fill(struct ata_scsi_args *args,

                        unsigned int (*actor) (struct ata_scsi_args *args,

                                           u8 *rbuf, unsigned int buflen));