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#ifndef _SCSI_PRIV_H
#define _SCSI_PRIV_H
#include <linux/config.h>
#include <linux/device.h>
struct request_queue;
struct scsi_cmnd;
struct scsi_device;
struct scsi_host_template;
struct scsi_request;
struct Scsi_Host;
/*
* These are the values that the owner field can take.
* They are used as an indication of who the command belongs to.
*/
#define SCSI_OWNER_HIGHLEVEL 0x100
#define SCSI_OWNER_MIDLEVEL 0x101
#define SCSI_OWNER_LOWLEVEL 0x102
#define SCSI_OWNER_ERROR_HANDLER 0x103
#define SCSI_OWNER_BH_HANDLER 0x104
#define SCSI_OWNER_NOBODY 0x105
/*
* Magic values for certain scsi structs. Shouldn't ever be used.
*/
#define SCSI_CMND_MAGIC 0xE25C23A5
#define SCSI_REQ_MAGIC 0x75F6D354
/*
* Scsi Error Handler Flags
*/
#define scsi_eh_eflags_chk(scp, flags) \
((scp)->eh_eflags & (flags))
#define scsi_eh_eflags_set(scp, flags) \
do { (scp)->eh_eflags |= (flags); } while(0)
#define scsi_eh_eflags_clr(scp, flags) \
do { (scp)->eh_eflags &= ~(flags); } while(0)
#define scsi_eh_eflags_clr_all(scp) \
(scp->eh_eflags = 0)
#define SCSI_EH_CANCEL_CMD 0x0001 /* Cancel this cmd */
#define SCSI_EH_REC_TIMEOUT 0x0002 /* EH retry timed out */
#define SCSI_SENSE_VALID(scmd) \
(((scmd)->sense_buffer[0] & 0x70) == 0x70)
/*
* Special value for scanning to specify scanning or rescanning of all
* possible channels, (target) ids, or luns on a given shost.
*/
#define SCAN_WILD_CARD ~0
/* hosts.c */
extern int scsi_init_hosts(void);
extern void scsi_exit_hosts(void);
/* scsi.c */
extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
extern int scsi_insert_special_req(struct scsi_request *sreq, int);
extern void scsi_init_cmd_from_req(struct scsi_cmnd *cmd,
struct scsi_request *sreq);
extern void __scsi_release_request(struct scsi_request *sreq);
extern void __scsi_done(struct scsi_cmnd *cmd);
#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 */
extern int scsi_get_device_flags(struct scsi_device *sdev,
unsigned char *vendor, unsigned char *model);
extern int __init scsi_init_devinfo(void);
extern void scsi_exit_devinfo(void);
/* scsi_error.c */
extern void scsi_times_out(struct scsi_cmnd *cmd);
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);
/* scsi_lib.c */
extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
extern void scsi_setup_cmd_retry(struct scsi_cmnd *cmd);
extern void scsi_device_unbusy(struct scsi_device *sdev);
extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
extern void scsi_next_command(struct scsi_cmnd *cmd);
extern void scsi_run_host_queues(struct Scsi_Host *shost);
extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
extern void scsi_free_queue(struct request_queue *q);
extern int scsi_init_queue(void);
extern void scsi_exit_queue(void);
/* 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 int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
unsigned int, unsigned int, 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 struct bus_type scsi_bus_type;
/*
* internal scsi timeout functions: for use by mid-layer and transport
* classes.
*/
#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT (HZ*60)
extern int scsi_internal_device_block(struct scsi_device *sdev);
extern int scsi_internal_device_unblock(struct scsi_device *sdev);
#endif /* _SCSI_PRIV_H */
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