target: provide generic sbc device type/revision helpers

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

drivers/target/target_core_file.c

@@ -491,24 +491,6 @@ static ssize_t fd_show_configfs_dev_params(struct se_device *dev, char *b)
 	return bl;
 }
 
-/*	fd_get_device_rev(): (Part of se_subsystem_api_t template)
- *
- *
- */
-static u32 fd_get_device_rev(struct se_device *dev)
-{
-	return SCSI_SPC_2; /* Returns SPC-3 in Initiator Data */
-}
-
-/*	fd_get_device_type(): (Part of se_subsystem_api_t template)
- *
- *
- */
-static u32 fd_get_device_type(struct se_device *dev)
-{
-	return TYPE_DISK;
-}
-
 static sector_t fd_get_blocks(struct se_device *dev)
 {
 	struct fd_dev *fd_dev = FD_DEV(dev);
@@ -552,8 +534,8 @@ static struct se_subsystem_api fileio_template = {
 	.parse_cdb		= fd_parse_cdb,
 	.set_configfs_dev_params = fd_set_configfs_dev_params,
 	.show_configfs_dev_params = fd_show_configfs_dev_params,
-	.get_device_rev		= fd_get_device_rev,
-	.get_device_type	= fd_get_device_type,
+	.get_device_rev		= sbc_get_device_rev,
+	.get_device_type	= sbc_get_device_type,
 	.get_blocks		= fd_get_blocks,
 };
 

drivers/target/target_core_iblock.c

@@ -664,16 +664,6 @@ fail:
 	return -ENOMEM;
 }
 
-static u32 iblock_get_device_rev(struct se_device *dev)
-{
-	return SCSI_SPC_2; /* Returns SPC-3 in Initiator Data */
-}
-
-static u32 iblock_get_device_type(struct se_device *dev)
-{
-	return TYPE_DISK;
-}
-
 static sector_t iblock_get_blocks(struct se_device *dev)
 {
 	struct iblock_dev *ib_dev = IBLOCK_DEV(dev);
@@ -735,8 +725,8 @@ static struct se_subsystem_api iblock_template = {
 	.parse_cdb		= iblock_parse_cdb,
 	.set_configfs_dev_params = iblock_set_configfs_dev_params,
 	.show_configfs_dev_params = iblock_show_configfs_dev_params,
-	.get_device_rev		= iblock_get_device_rev,
-	.get_device_type	= iblock_get_device_type,
+	.get_device_rev		= sbc_get_device_rev,
+	.get_device_type	= sbc_get_device_type,
 	.get_blocks		= iblock_get_blocks,
 };
 

drivers/target/target_core_rd.c

@@ -417,16 +417,6 @@ static ssize_t rd_show_configfs_dev_params(struct se_device *dev, char *b)
 	return bl;
 }
 
-static u32 rd_get_device_rev(struct se_device *dev)
-{
-	return SCSI_SPC_2; /* Returns SPC-3 in Initiator Data */
-}
-
-static u32 rd_get_device_type(struct se_device *dev)
-{
-	return TYPE_DISK;
-}
-
 static sector_t rd_get_blocks(struct se_device *dev)
 {
 	struct rd_dev *rd_dev = RD_DEV(dev);
@@ -459,8 +449,8 @@ static struct se_subsystem_api rd_mcp_template = {
 	.parse_cdb		= rd_parse_cdb,
 	.set_configfs_dev_params = rd_set_configfs_dev_params,
 	.show_configfs_dev_params = rd_show_configfs_dev_params,
-	.get_device_rev		= rd_get_device_rev,
-	.get_device_type	= rd_get_device_type,
+	.get_device_rev		= sbc_get_device_rev,
+	.get_device_type	= sbc_get_device_type,
 	.get_blocks		= rd_get_blocks,
 };
 

drivers/target/target_core_sbc.c

@@ -603,3 +603,15 @@ out_invalid_cdb_field:
 	return -EINVAL;
 }
 EXPORT_SYMBOL(sbc_parse_cdb);
+
+u32 sbc_get_device_rev(struct se_device *dev)
+{
+	return SCSI_SPC_2; /* Returns SPC-3 in Initiator Data */
+}
+EXPORT_SYMBOL(sbc_get_device_rev);
+
+u32 sbc_get_device_type(struct se_device *dev)
+{
+	return TYPE_DISK;
+}
+EXPORT_SYMBOL(sbc_get_device_type);

include/target/target_core_backend.h

@@ -50,11 +50,14 @@ void	transport_subsystem_release(struct se_subsystem_api *);
 
 void	target_complete_cmd(struct se_cmd *, u8);
 
-int	sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
 int	spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
 int	spc_emulate_report_luns(struct se_cmd *cmd);
 int	spc_get_write_same_sectors(struct se_cmd *cmd);
 
+int	sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
+u32	sbc_get_device_rev(struct se_device *dev);
+u32	sbc_get_device_type(struct se_device *dev);
+
 void	transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
 int	transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
 int	transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);