linux/drivers/scsi/scsi_priv.h
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   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _SCSI_PRIV_H
   3#define _SCSI_PRIV_H
   4
   5#include <linux/device.h>
   6#include <linux/async.h>
   7#include <scsi/scsi_device.h>
   8
   9struct request_queue;
  10struct request;
  11struct scsi_cmnd;
  12struct scsi_device;
  13struct scsi_target;
  14struct scsi_host_template;
  15struct Scsi_Host;
  16struct scsi_nl_hdr;
  17
  18
  19/*
  20 * Scsi Error Handler Flags
  21 */
  22#define SCSI_EH_ABORT_SCHEDULED 0x0002  /* Abort has been scheduled */
  23
  24#define SCSI_SENSE_VALID(scmd) \
  25        (((scmd)->sense_buffer[0] & 0x70) == 0x70)
  26
  27/* hosts.c */
  28extern int scsi_init_hosts(void);
  29extern void scsi_exit_hosts(void);
  30
  31/* scsi.c */
  32extern bool scsi_use_blk_mq;
  33int scsi_init_sense_cache(struct Scsi_Host *shost);
  34void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd);
  35#ifdef CONFIG_SCSI_LOGGING
  36void scsi_log_send(struct scsi_cmnd *cmd);
  37void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
  38#else
  39static inline void scsi_log_send(struct scsi_cmnd *cmd) 
  40        { };
  41static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
  42        { };
  43#endif
  44
  45/* scsi_devinfo.c */
  46
  47/* list of keys for the lists */
  48enum {
  49        SCSI_DEVINFO_GLOBAL = 0,
  50        SCSI_DEVINFO_SPI,
  51};
  52
  53extern int scsi_get_device_flags(struct scsi_device *sdev,
  54                                 const unsigned char *vendor,
  55                                 const unsigned char *model);
  56extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
  57                                       const unsigned char *vendor,
  58                                       const unsigned char *model, int key);
  59extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
  60                                        char *model, char *strflags,
  61                                        int flags, int key);
  62extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
  63extern int scsi_dev_info_add_list(int key, const char *name);
  64extern int scsi_dev_info_remove_list(int key);
  65
  66extern int __init scsi_init_devinfo(void);
  67extern void scsi_exit_devinfo(void);
  68
  69/* scsi_error.c */
  70extern void scmd_eh_abort_handler(struct work_struct *work);
  71extern enum blk_eh_timer_return scsi_times_out(struct request *req);
  72extern int scsi_error_handler(void *host);
  73extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  74extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  75extern void scsi_eh_scmd_add(struct scsi_cmnd *);
  76void scsi_eh_ready_devs(struct Scsi_Host *shost,
  77                        struct list_head *work_q,
  78                        struct list_head *done_q);
  79int scsi_eh_get_sense(struct list_head *work_q,
  80                      struct list_head *done_q);
  81int scsi_noretry_cmd(struct scsi_cmnd *scmd);
  82
  83/* scsi_lib.c */
  84extern void scsi_add_cmd_to_list(struct scsi_cmnd *cmd);
  85extern void scsi_del_cmd_from_list(struct scsi_cmnd *cmd);
  86extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  87extern void scsi_device_unbusy(struct scsi_device *sdev);
  88extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  89extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
  90extern void scsi_run_host_queues(struct Scsi_Host *shost);
  91extern void scsi_requeue_run_queue(struct work_struct *work);
  92extern struct request_queue *scsi_old_alloc_queue(struct scsi_device *sdev);
  93extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
  94extern void scsi_start_queue(struct scsi_device *sdev);
  95extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
  96extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
  97extern int scsi_init_queue(void);
  98extern void scsi_exit_queue(void);
  99extern void scsi_evt_thread(struct work_struct *work);
 100struct request_queue;
 101struct request;
 102
 103/* scsi_proc.c */
 104#ifdef CONFIG_SCSI_PROC_FS
 105extern void scsi_proc_hostdir_add(struct scsi_host_template *);
 106extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
 107extern void scsi_proc_host_add(struct Scsi_Host *);
 108extern void scsi_proc_host_rm(struct Scsi_Host *);
 109extern int scsi_init_procfs(void);
 110extern void scsi_exit_procfs(void);
 111#else
 112# define scsi_proc_hostdir_add(sht)     do { } while (0)
 113# define scsi_proc_hostdir_rm(sht)      do { } while (0)
 114# define scsi_proc_host_add(shost)      do { } while (0)
 115# define scsi_proc_host_rm(shost)       do { } while (0)
 116# define scsi_init_procfs()             (0)
 117# define scsi_exit_procfs()             do { } while (0)
 118#endif /* CONFIG_PROC_FS */
 119
 120/* scsi_scan.c */
 121extern char scsi_scan_type[];
 122extern int scsi_complete_async_scans(void);
 123extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
 124                                   unsigned int, u64, enum scsi_scan_mode);
 125extern void scsi_forget_host(struct Scsi_Host *);
 126extern void scsi_rescan_device(struct device *);
 127
 128/* scsi_sysctl.c */
 129#ifdef CONFIG_SYSCTL
 130extern int scsi_init_sysctl(void);
 131extern void scsi_exit_sysctl(void);
 132#else
 133# define scsi_init_sysctl()             (0)
 134# define scsi_exit_sysctl()             do { } while (0)
 135#endif /* CONFIG_SYSCTL */
 136
 137/* scsi_sysfs.c */
 138extern int scsi_sysfs_add_sdev(struct scsi_device *);
 139extern int scsi_sysfs_add_host(struct Scsi_Host *);
 140extern int scsi_sysfs_register(void);
 141extern void scsi_sysfs_unregister(void);
 142extern void scsi_sysfs_device_initialize(struct scsi_device *);
 143extern int scsi_sysfs_target_initialize(struct scsi_device *);
 144extern struct scsi_transport_template blank_transport_template;
 145extern void __scsi_remove_device(struct scsi_device *);
 146
 147extern struct bus_type scsi_bus_type;
 148extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
 149
 150/* scsi_netlink.c */
 151#ifdef CONFIG_SCSI_NETLINK
 152extern void scsi_netlink_init(void);
 153extern void scsi_netlink_exit(void);
 154extern struct sock *scsi_nl_sock;
 155#else
 156static inline void scsi_netlink_init(void) {}
 157static inline void scsi_netlink_exit(void) {}
 158#endif
 159
 160/* scsi_pm.c */
 161#ifdef CONFIG_PM
 162extern const struct dev_pm_ops scsi_bus_pm_ops;
 163
 164extern void scsi_autopm_get_target(struct scsi_target *);
 165extern void scsi_autopm_put_target(struct scsi_target *);
 166extern int scsi_autopm_get_host(struct Scsi_Host *);
 167extern void scsi_autopm_put_host(struct Scsi_Host *);
 168#else
 169static inline void scsi_autopm_get_target(struct scsi_target *t) {}
 170static inline void scsi_autopm_put_target(struct scsi_target *t) {}
 171static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
 172static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
 173#endif /* CONFIG_PM */
 174
 175extern struct async_domain scsi_sd_pm_domain;
 176extern struct async_domain scsi_sd_probe_domain;
 177
 178/* scsi_dh.c */
 179#ifdef CONFIG_SCSI_DH
 180int scsi_dh_add_device(struct scsi_device *sdev);
 181void scsi_dh_release_device(struct scsi_device *sdev);
 182#else
 183static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; }
 184static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
 185#endif
 186static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }
 187
 188/* 
 189 * internal scsi timeout functions: for use by mid-layer and transport
 190 * classes.
 191 */
 192
 193#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 194
 195#endif /* _SCSI_PRIV_H */
 196
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