[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: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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2 changed files with 31 additions and 1 deletions
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@ -1993,3 +1993,31 @@ int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
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}
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}
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EXPORT_SYMBOL(scsi_get_sense_info_fld);
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/**
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* scsi_build_sense_buffer - build sense data in a buffer
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* @desc: Sense format (non zero == descriptor format,
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* 0 == fixed format)
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* @buf: Where to build sense data
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* @key: Sense key
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* @asc: Additional sense code
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* @ascq: Additional sense code qualifier
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*
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**/
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void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq)
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{
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if (desc) {
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buf[0] = 0x72; /* descriptor, current */
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buf[1] = key;
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buf[2] = asc;
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buf[3] = ascq;
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buf[7] = 0;
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} else {
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buf[0] = 0x70; /* fixed, current */
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buf[2] = key;
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buf[7] = 0xa;
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buf[12] = asc;
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buf[13] = ascq;
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}
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}
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EXPORT_SYMBOL(scsi_build_sense_buffer);
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@ -58,6 +58,8 @@ extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
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extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
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u64 * info_out);
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extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq);
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/*
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* Reset request from external source
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*/
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