scsi: Move sense handling routines to scsi_common

Sense data handling is also done in the target stack.
Hence, move sense handling routines to scsi_common so
the target will be able to use them as well.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

1 files changed, 1 insertions, 98 deletions

diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 106884a5444e..6e6b2d26d3ce 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -26,7 +26,6 @@
 #include <linux/blkdev.h>
 #include <linux/delay.h>
 #include <linux/jiffies.h>
-#include <asm/unaligned.h>
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
@@ -34,6 +33,7 @@
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_driver.h>
 #include <scsi/scsi_eh.h>
+#include <scsi/scsi_common.h>
 #include <scsi/scsi_transport.h>
 #include <scsi/scsi_host.h>
 #include <scsi/scsi_ioctl.h>
@@ -2408,45 +2408,6 @@ bool scsi_command_normalize_sense(const struct scsi_cmnd *cmd,
 EXPORT_SYMBOL(scsi_command_normalize_sense);
 
 /**
- * scsi_sense_desc_find - search for a given descriptor type in	descriptor sense data format.
- * @sense_buffer:	byte array of descriptor format sense data
- * @sb_len:		number of valid bytes in sense_buffer
- * @desc_type:		value of descriptor type to find
- *			(e.g. 0 -> information)
- *
- * Notes:
- *	only valid when sense data is in descriptor format
- *
- * Return value:
- *	pointer to start of (first) descriptor if found else NULL
- */
-const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
-				int desc_type)
-{
-	int add_sen_len, add_len, desc_len, k;
-	const u8 * descp;
-
-	if ((sb_len < 8) || (0 == (add_sen_len = sense_buffer[7])))
-		return NULL;
-	if ((sense_buffer[0] < 0x72) || (sense_buffer[0] > 0x73))
-		return NULL;
-	add_sen_len = (add_sen_len < (sb_len - 8)) ?
-			add_sen_len : (sb_len - 8);
-	descp = &sense_buffer[8];
-	for (desc_len = 0, k = 0; k < add_sen_len; k += desc_len) {
-		descp += desc_len;
-		add_len = (k < (add_sen_len - 1)) ? descp[1]: -1;
-		desc_len = add_len + 2;
-		if (descp[0] == desc_type)
-			return descp;
-		if (add_len < 0) // short descriptor ??
-			break;
-	}
-	return NULL;
-}
-EXPORT_SYMBOL(scsi_sense_desc_find);
-
-/**
  * scsi_get_sense_info_fld - get information field from sense data (either fixed or descriptor format)
  * @sense_buffer:	byte array of sense data
  * @sb_len:		number of valid bytes in sense_buffer
@@ -2495,61 +2456,3 @@ 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);
-
-/**
- * scsi_set_sense_information - set the information field in a
- *		formatted sense data buffer
- * @buf:	Where to build sense data
- * @info:	64-bit information value to be set
- *
- **/
-void scsi_set_sense_information(u8 *buf, u64 info)
-{
-	if ((buf[0] & 0x7f) == 0x72) {
-		u8 *ucp, len;
-
-		len = buf[7];
-		ucp = (char *)scsi_sense_desc_find(buf, len + 8, 0);
-		if (!ucp) {
-			buf[7] = len + 0xa;
-			ucp = buf + 8 + len;
-		}
-		ucp[0] = 0;
-		ucp[1] = 0xa;
-		ucp[2] = 0x80; /* Valid bit */
-		ucp[3] = 0;
-		put_unaligned_be64(info, &ucp[4]);
-	} else if ((buf[0] & 0x7f) == 0x70) {
-		buf[0] |= 0x80;
-		put_unaligned_be64(info, &buf[3]);
-	}
-}
-EXPORT_SYMBOL(scsi_set_sense_information);