[linux-2.6-block.git] / drivers / scsi / scsi_priv.h

#ifndef _SCSI_PRIV_H
#define _SCSI_PRIV_H

#include <linux/device.h>
#include <linux/async.h>
#include <scsi/scsi_device.h>

struct request_queue;
struct request;
struct scsi_cmnd;
struct scsi_device;
struct scsi_target;
struct scsi_host_template;
struct Scsi_Host;
struct scsi_nl_hdr;


/*
 * Scsi Error Handler Flags
 */
#define SCSI_EH_CANCEL_CMD	0x0001	/* Cancel this cmd */
#define SCSI_EH_ABORT_SCHEDULED	0x0002	/* Abort has been scheduled */

#define SCSI_SENSE_VALID(scmd) \
	(((scmd)->sense_buffer[0] & 0x70) == 0x70)

/* hosts.c */
extern int scsi_init_hosts(void);
extern void scsi_exit_hosts(void);

/* scsi.c */
extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
#ifdef CONFIG_SCSI_LOGGING
void scsi_log_send(struct scsi_cmnd *cmd);
void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
#else
static inline void scsi_log_send(struct scsi_cmnd *cmd) 
	{ };
static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
	{ };
#endif

/* scsi_devinfo.c */

/* list of keys for the lists */
enum {
	SCSI_DEVINFO_GLOBAL = 0,
	SCSI_DEVINFO_SPI,
};

extern int scsi_get_device_flags(struct scsi_device *sdev,
				 const unsigned char *vendor,
				 const unsigned char *model);
extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
				       const unsigned char *vendor,
				       const unsigned char *model, int key);
extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
					char *model, char *strflags,
					int flags, int key);
extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
extern int scsi_dev_info_add_list(int key, const char *name);
extern int scsi_dev_info_remove_list(int key);

extern int __init scsi_init_devinfo(void);
extern void scsi_exit_devinfo(void);

/* scsi_error.c */
extern void scmd_eh_abort_handler(struct work_struct *work);
extern enum blk_eh_timer_return scsi_times_out(struct request *req);
extern int scsi_error_handler(void *host);
extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
extern void scsi_eh_wakeup(struct Scsi_Host *shost);
extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
void scsi_eh_ready_devs(struct Scsi_Host *shost,
			struct list_head *work_q,
			struct list_head *done_q);
int scsi_eh_get_sense(struct list_head *work_q,
		      struct list_head *done_q);
int scsi_noretry_cmd(struct scsi_cmnd *scmd);

/* scsi_lib.c */
extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
extern void scsi_device_unbusy(struct scsi_device *sdev);
extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
extern void scsi_run_host_queues(struct Scsi_Host *shost);
extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
extern int scsi_init_queue(void);
extern void scsi_exit_queue(void);
struct request_queue;
struct request;
extern struct kmem_cache *scsi_sdb_cache;

/* scsi_proc.c */
#ifdef CONFIG_SCSI_PROC_FS
extern void scsi_proc_hostdir_add(struct scsi_host_template *);
extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
extern void scsi_proc_host_add(struct Scsi_Host *);
extern void scsi_proc_host_rm(struct Scsi_Host *);
extern int scsi_init_procfs(void);
extern void scsi_exit_procfs(void);
#else
# define scsi_proc_hostdir_add(sht)	do { } while (0)
# define scsi_proc_hostdir_rm(sht)	do { } while (0)
# define scsi_proc_host_add(shost)	do { } while (0)
# define scsi_proc_host_rm(shost)	do { } while (0)
# define scsi_init_procfs()		(0)
# define scsi_exit_procfs()		do { } while (0)
#endif /* CONFIG_PROC_FS */

/* scsi_scan.c */
extern char scsi_scan_type[];
extern int scsi_complete_async_scans(void);
extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
				   unsigned int, u64, int);
extern void scsi_forget_host(struct Scsi_Host *);
extern void scsi_rescan_device(struct device *);

/* scsi_sysctl.c */
#ifdef CONFIG_SYSCTL
extern int scsi_init_sysctl(void);
extern void scsi_exit_sysctl(void);
#else
# define scsi_init_sysctl()		(0)
# define scsi_exit_sysctl()		do { } while (0)
#endif /* CONFIG_SYSCTL */

/* scsi_sysfs.c */
extern int scsi_sysfs_add_sdev(struct scsi_device *);
extern int scsi_sysfs_add_host(struct Scsi_Host *);
extern int scsi_sysfs_register(void);
extern void scsi_sysfs_unregister(void);
extern void scsi_sysfs_device_initialize(struct scsi_device *);
extern int scsi_sysfs_target_initialize(struct scsi_device *);
extern struct scsi_transport_template blank_transport_template;
extern void __scsi_remove_device(struct scsi_device *);

extern struct bus_type scsi_bus_type;
extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];

/* scsi_netlink.c */
#ifdef CONFIG_SCSI_NETLINK
extern void scsi_netlink_init(void);
extern void scsi_netlink_exit(void);
extern struct sock *scsi_nl_sock;
#else
static inline void scsi_netlink_init(void) {}
static inline void scsi_netlink_exit(void) {}
#endif

/* scsi_pm.c */
#ifdef CONFIG_PM
extern const struct dev_pm_ops scsi_bus_pm_ops;

extern void scsi_autopm_get_target(struct scsi_target *);
extern void scsi_autopm_put_target(struct scsi_target *);
extern int scsi_autopm_get_host(struct Scsi_Host *);
extern void scsi_autopm_put_host(struct Scsi_Host *);
#else
static inline void scsi_autopm_get_target(struct scsi_target *t) {}
static inline void scsi_autopm_put_target(struct scsi_target *t) {}
static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
#endif /* CONFIG_PM */

extern struct async_domain scsi_sd_pm_domain;
extern struct async_domain scsi_sd_probe_domain;

/* scsi_dh.c */
#ifdef CONFIG_SCSI_DH
int scsi_dh_add_device(struct scsi_device *sdev);
void scsi_dh_release_device(struct scsi_device *sdev);
#else
static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; }
static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
#endif
static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }

/* 
 * internal scsi timeout functions: for use by mid-layer and transport
 * classes.
 */

#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT	600	/* units in seconds */
extern int scsi_internal_device_block(struct scsi_device *sdev);
extern int scsi_internal_device_unblock(struct scsi_device *sdev,
					enum scsi_device_state new_state);

#endif /* _SCSI_PRIV_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _SCSI_PRIV_H
	2	#define _SCSI_PRIV_H
	3
1da177e4	4	#include <linux/device.h>
2955b47d	5	#include <linux/async.h>
5d9fb5cc	6	#include <scsi/scsi_device.h>
1da177e4 LT	7
1da177e4 LT	8	struct request_queue;
242f9dcb	9	struct request;
1da177e4 LT	10	struct scsi_cmnd;
1da177e4 LT	11	struct scsi_device;
bc4f2401	12	struct scsi_target;
1da177e4	13	struct scsi_host_template;
1da177e4	14	struct Scsi_Host;
84314fd4	15	struct scsi_nl_hdr;
1da177e4 LT	16
1da177e4 LT	17
1da177e4 LT	18	/*
	19	* Scsi Error Handler Flags
	20	*/
1da177e4	21	#define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
e494f6a7	22	#define SCSI_EH_ABORT_SCHEDULED 0x0002 /* Abort has been scheduled */
1da177e4 LT	23
	24	#define SCSI_SENSE_VALID(scmd) \
	25	(((scmd)->sense_buffer[0] & 0x70) == 0x70)
	26
1da177e4 LT	27	/* hosts.c */
	28	extern int scsi_init_hosts(void);
	29	extern void scsi_exit_hosts(void);
	30
	31	/* scsi.c */
1da177e4 LT	32	extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
1da177e4 LT	33	extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
1da177e4 LT	34	#ifdef CONFIG_SCSI_LOGGING
	35	void scsi_log_send(struct scsi_cmnd *cmd);
	36	void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
	37	#else
	38	static inline void scsi_log_send(struct scsi_cmnd *cmd)
	39	{ };
	40	static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
	41	{ };
	42	#endif
	43
	44	/* scsi_devinfo.c */
598fa4b7 JB	45
	46	/* list of keys for the lists */
	47	enum {
	48	SCSI_DEVINFO_GLOBAL = 0,
a9e0edb6	49	SCSI_DEVINFO_SPI,
598fa4b7 JB	50	};
598fa4b7 JB	51
1da177e4	52	extern int scsi_get_device_flags(struct scsi_device *sdev,
7f23e146 JB	53	const unsigned char *vendor,
7f23e146 JB	54	const unsigned char *model);
598fa4b7 JB	55	extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
	56	const unsigned char *vendor,
	57	const unsigned char *model, int key);
	58	extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
	59	char model, char strflags,
	60	int flags, int key);
38a039be	61	extern int scsi_dev_info_list_del_keyed(char vendor, char model, int key);
598fa4b7 JB	62	extern int scsi_dev_info_add_list(int key, const char *name);
	63	extern int scsi_dev_info_remove_list(int key);
	64
1da177e4 LT	65	extern int __init scsi_init_devinfo(void);
	66	extern void scsi_exit_devinfo(void);
	67
	68	/* scsi_error.c */
e494f6a7	69	extern void scmd_eh_abort_handler(struct work_struct *work);
242f9dcb	70	extern enum blk_eh_timer_return scsi_times_out(struct request *req);
1da177e4 LT	71	extern int scsi_error_handler(void *host);
	72	extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
	73	extern void scsi_eh_wakeup(struct Scsi_Host *shost);
	74	extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
dca84e46 DW	75	void scsi_eh_ready_devs(struct Scsi_Host *shost,
	76	struct list_head *work_q,
	77	struct list_head *done_q);
	78	int scsi_eh_get_sense(struct list_head *work_q,
	79	struct list_head *done_q);
4a27446f	80	int scsi_noretry_cmd(struct scsi_cmnd *scmd);
1da177e4 LT	81
	82	/* scsi_lib.c */
	83	extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
1da177e4	84	extern void scsi_device_unbusy(struct scsi_device *sdev);
84feb166	85	extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
7b3d9545	86	extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
1da177e4 LT	87	extern void scsi_run_host_queues(struct Scsi_Host *shost);
1da177e4 LT	88	extern struct request_queue scsi_alloc_queue(struct scsi_device sdev);
d285203c CH	89	extern struct request_queue scsi_mq_alloc_queue(struct scsi_device sdev);
	90	extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
	91	extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
1da177e4 LT	92	extern int scsi_init_queue(void);
1da177e4 LT	93	extern void scsi_exit_queue(void);
751bf4d7 JB	94	struct request_queue;
751bf4d7 JB	95	struct request;
7027ad72	96	extern struct kmem_cache *scsi_sdb_cache;
1da177e4 LT	97
	98	/* scsi_proc.c */
	99	#ifdef CONFIG_SCSI_PROC_FS
	100	extern void scsi_proc_hostdir_add(struct scsi_host_template *);
	101	extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
	102	extern void scsi_proc_host_add(struct Scsi_Host *);
	103	extern void scsi_proc_host_rm(struct Scsi_Host *);
	104	extern int scsi_init_procfs(void);
	105	extern void scsi_exit_procfs(void);
	106	#else
	107	# define scsi_proc_hostdir_add(sht) do { } while (0)
	108	# define scsi_proc_hostdir_rm(sht) do { } while (0)
	109	# define scsi_proc_host_add(shost) do { } while (0)
	110	# define scsi_proc_host_rm(shost) do { } while (0)
	111	# define scsi_init_procfs() (0)
	112	# define scsi_exit_procfs() do { } while (0)
	113	#endif /* CONFIG_PROC_FS */
	114
	115	/* scsi_scan.c */
3c31b52f	116	extern char scsi_scan_type[];
fea6d607	117	extern int scsi_complete_async_scans(void);
1da177e4	118	extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
9cb78c16	119	unsigned int, u64, int);
1da177e4 LT	120	extern void scsi_forget_host(struct Scsi_Host *);
	121	extern void scsi_rescan_device(struct device *);
	122
	123	/* scsi_sysctl.c */
	124	#ifdef CONFIG_SYSCTL
	125	extern int scsi_init_sysctl(void);
	126	extern void scsi_exit_sysctl(void);
	127	#else
	128	# define scsi_init_sysctl() (0)
	129	# define scsi_exit_sysctl() do { } while (0)
	130	#endif /* CONFIG_SYSCTL */
	131
	132	/* scsi_sysfs.c */
1da177e4 LT	133	extern int scsi_sysfs_add_sdev(struct scsi_device *);
	134	extern int scsi_sysfs_add_host(struct Scsi_Host *);
	135	extern int scsi_sysfs_register(void);
	136	extern void scsi_sysfs_unregister(void);
	137	extern void scsi_sysfs_device_initialize(struct scsi_device *);
	138	extern int scsi_sysfs_target_initialize(struct scsi_device *);
	139	extern struct scsi_transport_template blank_transport_template;
903f4fed	140	extern void __scsi_remove_device(struct scsi_device *);
1da177e4	141
1da177e4	142	extern struct bus_type scsi_bus_type;
a4dbd674	143	extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
1da177e4	144
84314fd4 JS	145	/* scsi_netlink.c */
	146	#ifdef CONFIG_SCSI_NETLINK
	147	extern void scsi_netlink_init(void);
	148	extern void scsi_netlink_exit(void);
	149	extern struct sock *scsi_nl_sock;
	150	#else
	151	static inline void scsi_netlink_init(void) {}
	152	static inline void scsi_netlink_exit(void) {}
	153	#endif
	154
db5bd1e0	155	/* scsi_pm.c */
aa338601	156	#ifdef CONFIG_PM
db5bd1e0	157	extern const struct dev_pm_ops scsi_bus_pm_ops;
4f7ad521	158
bc4f2401 AS	159	extern void scsi_autopm_get_target(struct scsi_target *);
	160	extern void scsi_autopm_put_target(struct scsi_target *);
	161	extern int scsi_autopm_get_host(struct Scsi_Host *);
	162	extern void scsi_autopm_put_host(struct Scsi_Host *);
	163	#else
	164	static inline void scsi_autopm_get_target(struct scsi_target *t) {}
	165	static inline void scsi_autopm_put_target(struct scsi_target *t) {}
	166	static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
	167	static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
4f7ad521	168	#endif /* CONFIG_PM */
db5bd1e0	169
3c31b52f	170	extern struct async_domain scsi_sd_pm_domain;
2955b47d	171	extern struct async_domain scsi_sd_probe_domain;
a7a20d10	172
086b91d0 CH	173	/* scsi_dh.c */
	174	#ifdef CONFIG_SCSI_DH
	175	int scsi_dh_add_device(struct scsi_device *sdev);
23695e41	176	void scsi_dh_release_device(struct scsi_device *sdev);
086b91d0 CH	177	#else
086b91d0 CH	178	static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; }
23695e41	179	static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
086b91d0	180	#endif
41f95dd2	181	static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }
086b91d0	182
1da177e4 LT	183	/*
	184	* internal scsi timeout functions: for use by mid-layer and transport
	185	* classes.
	186	*/
	187
1c9e16e4	188	#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT 600 /* units in seconds */
1da177e4	189	extern int scsi_internal_device_block(struct scsi_device *sdev);
5d9fb5cc MC	190	extern int scsi_internal_device_unblock(struct scsi_device *sdev,
5d9fb5cc MC	191	enum scsi_device_state new_state);
1da177e4 LT	192
1da177e4 LT	193	#endif /* _SCSI_PRIV_H */