drivers/scsi/scsi_priv.h

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