Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (207 commits)
  [SCSI] gdth: fix CONFIG_ISA build failure
  [SCSI] esp_scsi: remove __dev{init,exit}
  [SCSI] gdth: !use_sg cleanup and use of scsi accessors
  [SCSI] gdth: Move members from SCp to gdth_cmndinfo, stage 2
  [SCSI] gdth: Setup proper per-command private data
  [SCSI] gdth: Remove gdth_ctr_tab[]
  [SCSI] gdth: switch to modern scsi host registration
  [SCSI] gdth: gdth_interrupt() gdth_get_status() & gdth_wait() fixes
  [SCSI] gdth: clean up host private data
  [SCSI] gdth: Remove virt hosts
  [SCSI] gdth: Reorder scsi_host_template intitializers
  [SCSI] gdth: kill gdth_{read,write}[bwl] wrappers
  [SCSI] gdth: Remove 2.4.x support, in-kernel changelog
  [SCSI] gdth: split out pci probing
  [SCSI] gdth: split out eisa probing
  [SCSI] gdth: split out isa probing
  gdth: Make one abuse of scsi_cmnd less obvious
  [SCSI] NCR5380: Use scsi_eh API for REQUEST_SENSE invocation
  [SCSI] usb storage: use scsi_eh API in REQUEST_SENSE execution
  [SCSI] scsi_error: Refactoring scsi_error to facilitate in synchronous REQUEST_SENSE
  ...

13 files changed, 139 insertions, 41 deletions

diff --git a/include/scsi/libsrp.h b/include/scsi/libsrp.h
index d143171896ae..ba615e4c1d7c 100644
--- a/include/scsi/libsrp.h
+++ b/include/scsi/libsrp.h
@@ -59,7 +59,7 @@ extern void srp_target_free(struct srp_target *);
 extern struct iu_entry *srp_iu_get(struct srp_target *);
 extern void srp_iu_put(struct iu_entry *);
 
-extern int srp_cmd_queue(struct Scsi_Host *, struct srp_cmd *, void *, u64);
+extern int srp_cmd_queue(struct Scsi_Host *, struct srp_cmd *, void *, u64, u64);
 extern int srp_transfer_data(struct scsi_cmnd *, struct srp_cmd *,
 			     srp_rdma_t, int, int);
 
diff --git a/include/scsi/scsi_cmnd.h b/include/scsi/scsi_cmnd.h
index 53e170586c26..65ab5145a09b 100644
--- a/include/scsi/scsi_cmnd.h
+++ b/include/scsi/scsi_cmnd.h
@@ -33,20 +33,17 @@ struct scsi_cmnd {
 	struct list_head list;  /* scsi_cmnd participates in queue lists */
 	struct list_head eh_entry; /* entry for the host eh_cmd_q */
 	int eh_eflags;		/* Used by error handlr */
-	void (*done) (struct scsi_cmnd *);	/* Mid-level done function */
 
 	/*
 	 * A SCSI Command is assigned a nonzero serial_number before passed
 	 * to the driver's queue command function.  The serial_number is
 	 * cleared when scsi_done is entered indicating that the command
-	 * has been completed.  It currently doesn't have much use other
-	 * than printk's.  Some lldd's use this number for other purposes.
-	 * It's almost certain that such usages are either incorrect or
-	 * meaningless.  Please kill all usages other than printk's.  Also,
-	 * as this number is always identical to ->pid, please convert
-	 * printk's to use ->pid, so that we can kill this field.
+	 * has been completed.  It is a bug for LLDDs to use this number
+	 * for purposes other than printk (and even that is only useful
+	 * for debugging).
 	 */
 	unsigned long serial_number;
+
 	/*
 	 * This is set to jiffies as it was when the command was first
 	 * allocated.  It is used to time how long the command has
@@ -116,7 +113,6 @@ struct scsi_cmnd {
 	int result;		/* Status code from lower level driver */
 
 	unsigned char tag;	/* SCSI-II queued command tag */
-	unsigned long pid;	/* Process ID, starts at 0. Unique per host. */
 };
 
 extern struct scsi_cmnd *scsi_get_command(struct scsi_device *, gfp_t);
@@ -124,7 +120,6 @@ extern struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *, gfp_t);
 extern void scsi_put_command(struct scsi_cmnd *);
 extern void __scsi_put_command(struct Scsi_Host *, struct scsi_cmnd *,
 			       struct device *);
-extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
 extern void scsi_finish_command(struct scsi_cmnd *cmd);
 extern void scsi_req_abort_cmd(struct scsi_cmnd *cmd);
 
diff --git a/include/scsi/scsi_dbg.h b/include/scsi/scsi_dbg.h
index 5a43a4cd96c6..e89844cc2cd3 100644
--- a/include/scsi/scsi_dbg.h
+++ b/include/scsi/scsi_dbg.h
@@ -9,6 +9,8 @@ extern void __scsi_print_command(unsigned char *);
 extern void scsi_show_extd_sense(unsigned char, unsigned char);
 extern void scsi_show_sense_hdr(struct scsi_sense_hdr *);
 extern void scsi_print_sense_hdr(const char *, struct scsi_sense_hdr *);
+extern void scsi_cmd_print_sense_hdr(struct scsi_cmnd *, const char *,
+				     struct scsi_sense_hdr *);
 extern void scsi_print_sense(char *, struct scsi_cmnd *);
 extern void __scsi_print_sense(const char *name,
 			       const unsigned char *sense_buffer,
diff --git a/include/scsi/scsi_driver.h b/include/scsi/scsi_driver.h
index 3465f31a21c4..1f5ca7f62116 100644
--- a/include/scsi/scsi_driver.h
+++ b/include/scsi/scsi_driver.h
@@ -5,14 +5,17 @@
 
 struct module;
 struct scsi_cmnd;
+struct scsi_device;
+struct request;
+struct request_queue;
 
 
 struct scsi_driver {
 	struct module		*owner;
 	struct device_driver	gendrv;
 
-	int (*init_command)(struct scsi_cmnd *);
 	void (*rescan)(struct device *);
+	int (*done)(struct scsi_cmnd *);
 };
 #define to_scsi_driver(drv) \
 	container_of((drv), struct scsi_driver, gendrv)
@@ -25,4 +28,9 @@ extern int scsi_register_interface(struct class_interface *);
 #define scsi_unregister_interface(intf) \
 	class_interface_unregister(intf)
 
+int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req);
+int scsi_setup_fs_cmnd(struct scsi_device *sdev, struct request *req);
+int scsi_prep_state_check(struct scsi_device *sdev, struct request *req);
+int scsi_prep_return(struct request_queue *q, struct request *req, int ret);
+
 #endif /* _SCSI_SCSI_DRIVER_H */
diff --git a/include/scsi/scsi_eh.h b/include/scsi/scsi_eh.h
index c5c0f6762a01..44224ba4dd90 100644
--- a/include/scsi/scsi_eh.h
+++ b/include/scsi/scsi_eh.h
@@ -1,7 +1,7 @@
 #ifndef _SCSI_SCSI_EH_H
 #define _SCSI_SCSI_EH_H
 
-struct scsi_cmnd;
+#include <scsi/scsi_cmnd.h>
 struct scsi_device;
 struct Scsi_Host;
 
@@ -65,4 +65,25 @@ extern int scsi_get_sense_info_fld(const u8 * sense_buffer, int sb_len,
 
 extern int scsi_reset_provider(struct scsi_device *, int);
 
+struct scsi_eh_save {
+	int result;
+	enum dma_data_direction data_direction;
+	unsigned char cmd_len;
+	unsigned char cmnd[MAX_COMMAND_SIZE];
+
+	void *buffer;
+	unsigned bufflen;
+	unsigned short use_sg;
+	int resid;
+
+	struct scatterlist sense_sgl;
+};
+
+extern void scsi_eh_prep_cmnd(struct scsi_cmnd *scmd,
+		struct scsi_eh_save *ses, unsigned char *cmnd,
+		int cmnd_size, unsigned sense_bytes);
+
+extern void scsi_eh_restore_cmnd(struct scsi_cmnd* scmd,
+		struct scsi_eh_save *ses);
+
 #endif /* _SCSI_SCSI_EH_H */
diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
index 3b8a6a85c2f8..7d210cd6c38d 100644
--- a/include/scsi/scsi_host.h
+++ b/include/scsi/scsi_host.h
@@ -32,6 +32,9 @@ struct blk_queue_tags;
 #define SG_NONE 0
 #define SG_ALL 0xff
 
+#define MODE_UNKNOWN 0x00
+#define MODE_INITIATOR 0x01
+#define MODE_TARGET 0x02
 
 #define DISABLE_CLUSTERING 0
 #define ENABLE_CLUSTERING 1
@@ -145,9 +148,6 @@ struct scsi_host_template {
 	int (* transfer_response)(struct scsi_cmnd *,
 				  void (*done)(struct scsi_cmnd *));
 
-	/* Used as callback for the completion of task management request. */
-	int (* tsk_mgmt_response)(u64 mid, int result);
-
 	/*
 	 * 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
@@ -408,6 +408,11 @@ struct scsi_host_template {
 	unsigned char present;
 
 	/*
+	 * This specifies the mode that a LLD supports.
+	 */
+	unsigned supported_mode:2;
+
+	/*
 	 * true if this host adapter uses unchecked DMA onto an ISA bus.
 	 */
 	unsigned unchecked_isa_dma:1;
@@ -575,8 +580,9 @@ struct Scsi_Host {
 	 * Used to assign serial numbers to the cmds.
 	 * Protected by the host lock.
 	 */
-	unsigned long cmd_serial_number, cmd_pid; 
+	unsigned long cmd_serial_number;
 	
+	unsigned active_mode:2;
 	unsigned unchecked_isa_dma:1;
 	unsigned use_clustering:1;
 	unsigned use_blk_tcq:1;
diff --git a/include/scsi/scsi_tgt.h b/include/scsi/scsi_tgt.h
index 4f4427937af2..d0fefb96158f 100644
--- a/include/scsi/scsi_tgt.h
+++ b/include/scsi/scsi_tgt.h
@@ -11,9 +11,11 @@ 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 *, struct scsi_lun *, u64);
-extern int scsi_tgt_tsk_mgmt_request(struct Scsi_Host *, int, u64, struct scsi_lun *,
-				     void *);
+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
index 4cf9dff29a2f..f2ee7c238a45 100644
--- a/include/scsi/scsi_tgt_if.h
+++ b/include/scsi/scsi_tgt_if.h
@@ -23,13 +23,15 @@
 #define __SCSI_TARGET_IF_H
 
 /* user -> kernel */
-#define	TGT_UEVENT_CMD_RSP	0x0001
-#define	TGT_UEVENT_TSK_MGMT_RSP	0x0002
+#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_TSK_MGMT_REQ	0x1003
+#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;
@@ -46,6 +48,7 @@ struct tgt_event {
 		struct {
 			int host_no;
 			int result;
+			aligned_u64 itn_id;
 			aligned_u64 tag;
 			aligned_u64 uaddr;
 			aligned_u64 sense_uaddr;
@@ -55,15 +58,22 @@ struct tgt_event {
 		} cmd_rsp;
 		struct {
 			int host_no;
-			aligned_u64 mid;
 			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;
@@ -71,16 +81,25 @@ struct tgt_event {
 		} cmd_req;
 		struct {
 			int host_no;
-			aligned_u64 tag;
 			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))));
 
diff --git a/include/scsi/scsi_transport.h b/include/scsi/scsi_transport.h
index 3c18baa65a72..0dfef752f0e2 100644
--- a/include/scsi/scsi_transport.h
+++ b/include/scsi/scsi_transport.h
@@ -65,6 +65,18 @@ struct scsi_transport_template {
 	 * EH_NOT_HANDLED	Begin normal error recovery
 	 */
 	enum scsi_eh_timer_return (* eh_timed_out)(struct scsi_cmnd *);
+
+	/*
+	 * Used as callback for the completion of i_t_nexus request
+	 * for target drivers.
+	 */
+	int (* it_nexus_response)(struct Scsi_Host *, u64, int);
+
+	/*
+	 * Used as callback for the completion of task management
+	 * request for target drivers.
+	 */
+	int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);
 };
 
 #define transport_class_to_shost(tc) \
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index a0d80bcaa93d..e466d886e192 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -589,6 +589,10 @@ struct fc_function_template {
 	int	(*vport_disable)(struct fc_vport *, bool);
 	int  	(*vport_delete)(struct fc_vport *);
 
+	/* target-mode drivers' functions */
+	int     (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);
+	int     (* it_nexus_response)(struct Scsi_Host *, u64, int);
+
 	/* allocation lengths for host-specific data */
 	u32	 			dd_fcrport_size;
 	u32	 			dd_fcvport_size;
@@ -632,6 +636,8 @@ struct fc_function_template {
 	unsigned long	show_host_fabric_name:1;
 	unsigned long	show_host_symbolic_name:1;
 	unsigned long	show_host_system_hostname:1;
+
+	unsigned long	disable_target_scan:1;
 };
 
 
diff --git a/include/scsi/scsi_transport_iscsi.h b/include/scsi/scsi_transport_iscsi.h
index 706c0cd36c14..7ff6199cbd55 100644
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -24,6 +24,8 @@
 #define SCSI_TRANSPORT_ISCSI_H
 
 #include <linux/device.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
 #include <scsi/iscsi_if.h>
 
 struct scsi_transport_template;
diff --git a/include/scsi/scsi_transport_srp.h b/include/scsi/scsi_transport_srp.h
new file mode 100644
index 000000000000..9c60ca1c08c5
--- /dev/null
+++ b/include/scsi/scsi_transport_srp.h
@@ -0,0 +1,39 @@
+#ifndef SCSI_TRANSPORT_SRP_H
+#define SCSI_TRANSPORT_SRP_H
+
+#include <linux/transport_class.h>
+#include <linux/types.h>
+#include <linux/mutex.h>
+
+#define SRP_RPORT_ROLE_INITIATOR 0
+#define SRP_RPORT_ROLE_TARGET 1
+
+struct srp_rport_identifiers {
+	u8 port_id[16];
+	u8 roles;
+};
+
+struct srp_rport {
+	struct device dev;
+
+	u8 port_id[16];
+	u8 roles;
+};
+
+struct srp_function_template {
+	/* for target drivers */
+	int (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);
+	int (* it_nexus_response)(struct Scsi_Host *, u64, int);
+};
+
+extern struct scsi_transport_template *
+srp_attach_transport(struct srp_function_template *);
+extern void srp_release_transport(struct scsi_transport_template *);
+
+extern struct srp_rport *srp_rport_add(struct Scsi_Host *,
+				       struct srp_rport_identifiers *);
+extern void srp_rport_del(struct srp_rport *);
+
+extern void srp_remove_host(struct Scsi_Host *);
+
+#endif
diff --git a/include/scsi/sd.h b/include/scsi/sd.h
index ce02ad1f5185..f7513313ef0d 100644
--- a/include/scsi/sd.h
+++ b/include/scsi/sd.h
@@ -47,20 +47,6 @@ struct scsi_disk {
 };
 #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,cdev)
 
-static int  sd_revalidate_disk(struct gendisk *disk);
-static void sd_rw_intr(struct scsi_cmnd * SCpnt);
-static int  sd_probe(struct device *);
-static int  sd_remove(struct device *);
-static void sd_shutdown(struct device *dev);
-static int sd_suspend(struct device *dev, pm_message_t state);
-static int sd_resume(struct device *dev);
-static void sd_rescan(struct device *);
-static int  sd_init_command(struct scsi_cmnd *);
-static void sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer);
-static void scsi_disk_release(struct class_device *cdev);
-static void sd_print_sense_hdr(struct scsi_disk *, struct scsi_sense_hdr *);
-static void sd_print_result(struct scsi_disk *, int);
-
 #define sd_printk(prefix, sdsk, fmt, a...)				\
         (sdsk)->disk ?							\
 	sdev_printk(prefix, (sdsk)->device, "[%s] " fmt,		\