Commit 3bc6a261 authored by FUJITA Tomonori's avatar FUJITA Tomonori Committed by James Bottomley

[SCSI] add scsi_build_sense_buffer helper function

This adds scsi_build_sense_buffer, a simple helper function to build
sense data in a buffer.
Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent be3cb3d8
......@@ -1993,3 +1993,31 @@ int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
}
}
EXPORT_SYMBOL(scsi_get_sense_info_fld);
/**
* scsi_build_sense_buffer - build sense data in a buffer
* @desc: Sense format (non zero == descriptor format,
* 0 == fixed format)
* @buf: Where to build sense data
* @key: Sense key
* @asc: Additional sense code
* @ascq: Additional sense code qualifier
*
**/
void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq)
{
if (desc) {
buf[0] = 0x72; /* descriptor, current */
buf[1] = key;
buf[2] = asc;
buf[3] = ascq;
buf[7] = 0;
} else {
buf[0] = 0x70; /* fixed, current */
buf[2] = key;
buf[7] = 0xa;
buf[12] = asc;
buf[13] = ascq;
}
}
EXPORT_SYMBOL(scsi_build_sense_buffer);
......@@ -57,7 +57,9 @@ extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
u64 * info_out);
extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq);
/*
* Reset request from external source
*/
......
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