#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 /* * Flag bit for the internal_timeout array */ #define NORMAL_TIMEOUT 0 /* * 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 void scsi_done(struct scsi_cmnd *cmd); extern int scsi_retry_command(struct scsi_cmnd *cmd); 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 void scsi_device_dev_release(struct device *); 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 class sdev_class; 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 */