drivers/scsi/scsi_priv.h

   1 #ifndef _SCSI_PRIV_H
   2 #define _SCSI_PRIV_H
   3
   4 #include <linux/device.h>
   5 #include <linux/async.h>
   6 #include <scsi/scsi_device.h>
   7
   8 struct request_queue;
   9 struct request;
  10 struct scsi_cmnd;
  11 struct scsi_device;
  12 struct scsi_target;
  13 struct scsi_host_template;
  14 struct Scsi_Host;
  15 struct scsi_nl_hdr;
  16
  17
  18 /*
  19  * Scsi Error Handler Flags
  20  */
  21 #define SCSI_EH_ABORT_SCHEDULED 0x0002  /* Abort has been scheduled */
  22
  23 #define SCSI_SENSE_VALID(scmd) \
  24         (((scmd)->sense_buffer[0] & 0x70) == 0x70)
  25
  26 /* hosts.c */
  27 extern int scsi_init_hosts(void);
  28 extern void scsi_exit_hosts(void);
  29
  30 /* scsi.c */
  31 extern bool scsi_use_blk_mq;
  32 int scsi_init_sense_cache(struct Scsi_Host *shost);
  33 void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd);
  34 #ifdef CONFIG_SCSI_LOGGING
  35 void scsi_log_send(struct scsi_cmnd *cmd);
  36 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
  37 #else
  38 static inline void scsi_log_send(struct scsi_cmnd *cmd)
  39         { };
  40 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
  41         { };
  42 #endif
  43
  44 /* scsi_devinfo.c */
  45
  46 /* list of keys for the lists */
  47 enum {
  48         SCSI_DEVINFO_GLOBAL = 0,
  49         SCSI_DEVINFO_SPI,
  50 };
  51
  52 extern int scsi_get_device_flags(struct scsi_device *sdev,
  53                                  const unsigned char *vendor,
  54                                  const unsigned char *model);
  55 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
  56                                        const unsigned char *vendor,
  57                                        const unsigned char *model, int key);
  58 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
  59                                         char *model, char *strflags,
  60                                         int flags, int key);
  61 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
  62 extern int scsi_dev_info_add_list(int key, const char *name);
  63 extern int scsi_dev_info_remove_list(int key);
  64
  65 extern int __init scsi_init_devinfo(void);
  66 extern void scsi_exit_devinfo(void);
  67
  68 /* scsi_error.c */
  69 extern void scmd_eh_abort_handler(struct work_struct *work);
  70 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
  71 extern int scsi_error_handler(void *host);
  72 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  73 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  74 extern void scsi_eh_scmd_add(struct scsi_cmnd *);
  75 void scsi_eh_ready_devs(struct Scsi_Host *shost,
  76                         struct list_head *work_q,
  77                         struct list_head *done_q);
  78 int scsi_eh_get_sense(struct list_head *work_q,
  79                       struct list_head *done_q);
  80 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
  81
  82 /* scsi_lib.c */
  83 extern void scsi_add_cmd_to_list(struct scsi_cmnd *cmd);
  84 extern void scsi_del_cmd_from_list(struct scsi_cmnd *cmd);
  85 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  86 extern void scsi_device_unbusy(struct scsi_device *sdev);
  87 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  88 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
  89 extern void scsi_run_host_queues(struct Scsi_Host *shost);
  90 extern void scsi_requeue_run_queue(struct work_struct *work);
  91 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
  92 extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
  93 extern void scsi_start_queue(struct scsi_device *sdev);
  94 extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
  95 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
  96 extern int scsi_init_queue(void);
  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 extern struct async_domain scsi_sd_probe_domain;
 176
 177 /* scsi_dh.c */
 178 #ifdef CONFIG_SCSI_DH
 179 int scsi_dh_add_device(struct scsi_device *sdev);
 180 void scsi_dh_release_device(struct scsi_device *sdev);
 181 #else
 182 static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; }
 183 static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
 184 #endif
 185 static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }
 186
 187 /*
 188  * internal scsi timeout functions: for use by mid-layer and transport
 189  * classes.
 190  */
 191
 192 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 193
 194 #endif /* _SCSI_PRIV_H */