/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _SCSI_PRIV_H #define _SCSI_PRIV_H #include #include #include 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_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 bool scsi_use_blk_mq; int scsi_init_sense_cache(struct Scsi_Host *shost); void scsi_init_command(struct scsi_device *dev, 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 */ /* 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 void scsi_eh_scmd_add(struct scsi_cmnd *); 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 void scsi_add_cmd_to_list(struct scsi_cmnd *cmd); extern void scsi_del_cmd_from_list(struct scsi_cmnd *cmd); 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 void scsi_requeue_run_queue(struct work_struct *work); extern struct request_queue *scsi_old_alloc_queue(struct scsi_device *sdev); extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev); #if IS_ENABLED(CONFIG_BLK_TURBO_WRITE) extern void scsi_alloc_tw(struct scsi_device *sdev); #endif extern void scsi_start_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); extern void scsi_evt_thread(struct work_struct *work); struct request_queue; struct request; /* 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, enum scsi_scan_mode); 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 */ #endif /* _SCSI_PRIV_H */