tgt: removal

Now that the ibmvstgt driver as the only user of scsi_tgt is gone, the
scsi_tgt kernel module, the CONFIG_SCSI_TGT, CONFIG_SCSI_SRP_TGT_ATTRS and
CONFIG_SCSI_FC_TGT_ATTRS kbuild variable, the scsi_host_template
transfer_response method are no longer needed.

[hch: minor updates to the current tree, changelog update]

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>

3 files changed, 0 insertions, 150 deletions

diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index abb6958..f7adfe0 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -132,27 +132,6 @@ struct scsi_host_template {
 	int (* queuecommand)(struct Scsi_Host *, struct scsi_cmnd *);
 
 	/*
-	 * The transfer functions are used to queue a scsi command to
-	 * the LLD. When the driver is finished processing the command
-	 * the done callback is invoked.
-	 *
-	 * This is called to inform the LLD to transfer
-	 * scsi_bufflen(cmd) bytes. scsi_sg_count(cmd) speciefies the
-	 * number of scatterlist entried in the command and
-	 * scsi_sglist(cmd) returns the scatterlist.
-	 *
-	 * return values: see queuecommand
-	 *
-	 * If the LLD accepts the cmd, it should set the result to an
-	 * appropriate value when completed before calling the done function.
-	 *
-	 * STATUS: REQUIRED FOR TARGET DRIVERS
-	 */
-	/* TODO: rename */
-	int (* transfer_response)(struct scsi_cmnd *,
-				  void (*done)(struct scsi_cmnd *));
-
-	/*
 	 * This is an error handling strategy routine.  You don't need to
 	 * define one of these if you don't want to - there is a default
 	 * routine that is present that should work in most cases.  For those
diff --git a/include/scsi/scsi_tgt.h b/include/scsi/scsi_tgt.h
deleted file mode 100644
index d0fefb9..0000000
--- a/include/scsi/scsi_tgt.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * SCSI target definitions
- */
-
-#include <linux/dma-mapping.h>
-
-struct Scsi_Host;
-struct scsi_cmnd;
-struct scsi_lun;
-
-extern struct Scsi_Host *scsi_tgt_cmd_to_host(struct scsi_cmnd *);
-extern int scsi_tgt_alloc_queue(struct Scsi_Host *);
-extern void scsi_tgt_free_queue(struct Scsi_Host *);
-extern int scsi_tgt_queue_command(struct scsi_cmnd *, u64, struct scsi_lun *, u64);
-extern int scsi_tgt_tsk_mgmt_request(struct Scsi_Host *, u64, int, u64,
-				     struct scsi_lun *, void *);
-extern struct scsi_cmnd *scsi_host_get_command(struct Scsi_Host *,
-					       enum dma_data_direction,	gfp_t);
-extern void scsi_host_put_command(struct Scsi_Host *, struct scsi_cmnd *);
-extern int scsi_tgt_it_nexus_create(struct Scsi_Host *, u64, char *);
-extern int scsi_tgt_it_nexus_destroy(struct Scsi_Host *, u64);
diff --git a/include/scsi/scsi_tgt_if.h b/include/scsi/scsi_tgt_if.h
deleted file mode 100644
index f2ee7c2..0000000
--- a/include/scsi/scsi_tgt_if.h
+++ /dev/null
@@ -1,108 +0,0 @@
-/*
- * SCSI target kernel/user interface
- *
- * Copyright (C) 2005 FUJITA Tomonori <tomof@acm.org>
- * Copyright (C) 2005 Mike Christie <michaelc@cs.wisc.edu>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- */
-#ifndef __SCSI_TARGET_IF_H
-#define __SCSI_TARGET_IF_H
-
-/* user -> kernel */
-#define	TGT_UEVENT_CMD_RSP		0x0001
-#define	TGT_UEVENT_IT_NEXUS_RSP		0x0002
-#define	TGT_UEVENT_TSK_MGMT_RSP		0x0003
-
-/* kernel -> user */
-#define	TGT_KEVENT_CMD_REQ		0x1001
-#define	TGT_KEVENT_CMD_DONE		0x1002
-#define	TGT_KEVENT_IT_NEXUS_REQ		0x1003
-#define	TGT_KEVENT_TSK_MGMT_REQ		0x1004
-
-struct tgt_event_hdr {
-	uint16_t version;
-	uint16_t status;
-	uint16_t type;
-	uint16_t len;
-} __attribute__ ((aligned (sizeof(uint64_t))));
-
-struct tgt_event {
-	struct tgt_event_hdr hdr;
-
-	union {
-		/* user-> kernel */
-		struct {
-			int host_no;
-			int result;
-			aligned_u64 itn_id;
-			aligned_u64 tag;
-			aligned_u64 uaddr;
-			aligned_u64 sense_uaddr;
-			uint32_t len;
-			uint32_t sense_len;
-			uint8_t rw;
-		} cmd_rsp;
-		struct {
-			int host_no;
-			int result;
-			aligned_u64 itn_id;
-			aligned_u64 mid;
-		} tsk_mgmt_rsp;
-		struct {
-			__s32 host_no;
-			__s32 result;
-			aligned_u64 itn_id;
-			__u32 function;
-		} it_nexus_rsp;
-
-		/* kernel -> user */
-		struct {
-			int host_no;
-			uint32_t data_len;
-			aligned_u64 itn_id;
-			uint8_t scb[16];
-			uint8_t lun[8];
-			int attribute;
-			aligned_u64 tag;
-		} cmd_req;
-		struct {
-			int host_no;
-			int result;
-			aligned_u64 itn_id;
-			aligned_u64 tag;
-		} cmd_done;
-		struct {
-			int host_no;
-			int function;
-			aligned_u64 itn_id;
-			aligned_u64 tag;
-			uint8_t lun[8];
-			aligned_u64 mid;
-		} tsk_mgmt_req;
-		struct {
-			__s32 host_no;
-			__u32 function;
-			aligned_u64 itn_id;
-			__u32 max_cmds;
-			__u8 initiator_id[16];
-		} it_nexus_req;
-	} p;
-} __attribute__ ((aligned (sizeof(uint64_t))));
-
-#define TGT_RING_SIZE (1UL << 16)
-
-#endif