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scsi_sense_key(9f) [opensolaris man page]

scsi_sense_key(9F)					   Kernel Functions for Drivers 					scsi_sense_key(9F)

NAME
scsi_sense_key, scsi_sense_asc, scsi_sense_ascq - retrieve fields from SCSI sense data SYNOPSIS
#include <sys/scsi/scsi.h> uint8_t scsi_sense_key(uint8_t *sense_buffer); uint8_t scsi_sense_asc(uint8_t *sense_buffer); uint8_t scsi_sense_ascq(uint8_t *sense_buffer); INTERFACE LEVEL
Solaris DDI specific (Solaris DDI). PARAMETERS
sense_buffer Pointer to a buffer containing SCSI sense data. The sense data is expected in wire format starting at the response code. It can be in either fixed or descriptor format. DESCRIPTION
The scsi_sense_key() function returns the sense key value from the sense data contained in the sense_buffer. The scsi_sense_asc() function returns the additional sense code (ASC) value from the sense data contained in the sense_buffer. The scsi_sense_ascq() function returns the additional sense code qualifier (ASCQ) value from the sense data contained in the sense_buffer. The scsi_sense_key(), scsi_sense_asc(), and scsi_sense_ascq() functions are used to retrieve values from SCSI sense data, regardles of whether the sense data is in fixed format or descriptor format. Drivers should use scsi_validate_sense(9F) to ensure that valid sense key, asc, and ascq values are present in the sense data. RETURN VALUES
The scsi_sense_key() function returns the sense key value from the sense buffer. The scsi_sense_asc() function returns the additional sense code (ASC) from the sense buffer and the scsi_sense_ascq() function returns the additional sense code qualifier (ASCQ) from the sense buf- fer. CONTEXT
The scsi_sense_key(), scsi_sense_asc(), and scsi_sense_ascq() functions can be called from user or interrupt context. SEE ALSO
scsi_ext_sense_fields(9F), scsi_find_sense_descr(9F), scsi_sense_cmdspecific_uint64(9F), scsi_sense_info_uint64(9F), scsi_vali- date_sense(9F) SunOS 5.11 28 Jun 2006 scsi_sense_key(9F)

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scsi_arq_status(9S)					    Data Structures for Drivers 				       scsi_arq_status(9S)

NAME
scsi_arq_status - SCSI auto request sense structure SYNOPSIS
#include <sys/scsi/scsi.h> INTERFACE LEVEL
Solaris DDI specific (Solaris DDI) DESCRIPTION
When auto request sense has been enabled using scsi_ifsetcap(9F) and the "auto-rqsense" capability, the target driver must allocate a sta- tus area in the SCSI packet structure for the auto request sense structure (see scsi_pkt(9S)). In the event of a check condition, the transport layer automatically executes a request sense command. This check ensures that the request sense information does not get lost. The auto request sense structure supplies the SCSI status of the original command, the transport information pertaining to the request sense command, and the request sense data. STRUCTURE MEMBERS
struct scsi_status sts_status; /* SCSI status */ struct scsi_status sts_rqpkt_status; /* SCSI status of request sense cmd */ uchar_t sts_rqpkt_reason; /* reason completion */ uchar_t sts_rqpkt_resid; /* residue */ uint_t sts_rqpkt_state; /* state of command */ uint_t sts_rqpkt_statistics;/* statistics */ struct scsi_extended_sense sts_sensedata; /* actual sense data */ sts_status is the SCSI status of the original command. If the status indicates a check condition, the transport layer might have performed an auto request sense command. sts_rqpkt_status is the SCSI status of the request sense command. sts_rqpkt_reason is the completion reason of the request sense command. If the reason is not CMD_CMPLT, then the request sense command did not complete normally. sts_rqpkt_resid is the residual count of the data transfer and indicates the number of data bytes that have not been transferred. The auto request sense command requests SENSE_LENGTH bytes. sts_rqpkt_state has bit positions representing the five most important statuses that a SCSI command can go obtain. sts_rqpkt_statistics maintains transport-related statistics of the request sense command. sts_sensedata contains the actual sense data if the request sense command completed normally. SEE ALSO
scsi_ifgetcap(9F), scsi_init_pkt(9F), scsi_extended_sense(9S), scsi_pkt(9S) Writing Device Drivers SunOS 5.11 30 Sep 1996 scsi_arq_status(9S)
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