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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-03-25 09:26:49 +0900
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-04-07 12:19:01 -0500
commit3bc6a26192d2548397a3e721d786cf8345ee54e1 (patch)
tree03d14e2549a306c932bed0ee619bc67066631912
parentbe3cb3d84bb8dffecb7c5570355866075caa7e95 (diff)
[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>
-rw-r--r--drivers/scsi/scsi_error.c28
-rw-r--r--include/scsi/scsi_eh.h4
2 files changed, 31 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 1221d2ca0c6..221f31e36d2 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -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);
diff --git a/include/scsi/scsi_eh.h b/include/scsi/scsi_eh.h
index 37a7614f62f..d3a133b4a07 100644
--- a/include/scsi/scsi_eh.h
+++ b/include/scsi/scsi_eh.h
@@ -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
*/