drivers/scsi/scsi_priv.h

   1 #ifndef _SCSI_PRIV_H
   2 #define _SCSI_PRIV_H
   3
   4 #include <linux/device.h>
   5
   6 struct request_queue;
   7 struct request;
   8 struct scsi_cmnd;
   9 struct scsi_device;
  10 struct scsi_host_template;
  11 struct Scsi_Host;
  12 struct scsi_nl_hdr;
  13
  14
  15 /*
  16  * Scsi Error Handler Flags
  17  */
  18 #define SCSI_EH_CANCEL_CMD      0x0001  /* Cancel this cmd */
  19
  20 #define SCSI_SENSE_VALID(scmd) \
  21         (((scmd)->sense_buffer[0] & 0x70) == 0x70)
  22
  23 /* hosts.c */
  24 extern int scsi_init_hosts(void);
  25 extern void scsi_exit_hosts(void);
  26
  27 /* scsi.c */
  28 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
  29 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
  30 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
  31 #ifdef CONFIG_SCSI_LOGGING
  32 void scsi_log_send(struct scsi_cmnd *cmd);
  33 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
  34 #else
  35 static inline void scsi_log_send(struct scsi_cmnd *cmd)
  36         { };
  37 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
  38         { };
  39 #endif
  40
  41 /* scsi_scan.c */
  42 int scsi_complete_async_scans(void);
  43
  44 /* scsi_devinfo.c */
  45 extern int scsi_get_device_flags(struct scsi_device *sdev,
  46                                  const unsigned char *vendor,
  47                                  const unsigned char *model);
  48 extern int __init scsi_init_devinfo(void);
  49 extern void scsi_exit_devinfo(void);
  50
  51 /* scsi_error.c */
  52 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
  53 extern int scsi_error_handler(void *host);
  54 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  55 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  56 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
  57 void scsi_eh_ready_devs(struct Scsi_Host *shost,
  58                         struct list_head *work_q,
  59                         struct list_head *done_q);
  60 int scsi_eh_get_sense(struct list_head *work_q,
  61                       struct list_head *done_q);
  62 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
  63
  64 /* scsi_lib.c */
  65 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  66 extern void scsi_device_unbusy(struct scsi_device *sdev);
  67 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  68 extern void scsi_next_command(struct scsi_cmnd *cmd);
  69 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
  70 extern void scsi_run_host_queues(struct Scsi_Host *shost);
  71 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
  72 extern void scsi_free_queue(struct request_queue *q);
  73 extern int scsi_init_queue(void);
  74 extern void scsi_exit_queue(void);
  75 struct request_queue;
  76 struct request;
  77 extern int scsi_prep_fn(struct request_queue *, struct request *);
  78 extern struct kmem_cache *scsi_sdb_cache;
  79
  80 /* scsi_proc.c */
  81 #ifdef CONFIG_SCSI_PROC_FS
  82 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
  83 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
  84 extern void scsi_proc_host_add(struct Scsi_Host *);
  85 extern void scsi_proc_host_rm(struct Scsi_Host *);
  86 extern int scsi_init_procfs(void);
  87 extern void scsi_exit_procfs(void);
  88 #else
  89 # define scsi_proc_hostdir_add(sht)     do { } while (0)
  90 # define scsi_proc_hostdir_rm(sht)      do { } while (0)
  91 # define scsi_proc_host_add(shost)      do { } while (0)
  92 # define scsi_proc_host_rm(shost)       do { } while (0)
  93 # define scsi_init_procfs()             (0)
  94 # define scsi_exit_procfs()             do { } while (0)
  95 #endif /* CONFIG_PROC_FS */
  96
  97 /* scsi_scan.c */
  98 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
  99                                    unsigned int, unsigned int, int);
 100 extern void scsi_forget_host(struct Scsi_Host *);
 101 extern void scsi_rescan_device(struct device *);
 102
 103 /* scsi_sysctl.c */
 104 #ifdef CONFIG_SYSCTL
 105 extern int scsi_init_sysctl(void);
 106 extern void scsi_exit_sysctl(void);
 107 #else
 108 # define scsi_init_sysctl()             (0)
 109 # define scsi_exit_sysctl()             do { } while (0)
 110 #endif /* CONFIG_SYSCTL */
 111
 112 /* scsi_sysfs.c */
 113 extern int scsi_sysfs_add_sdev(struct scsi_device *);
 114 extern int scsi_sysfs_add_host(struct Scsi_Host *);
 115 extern int scsi_sysfs_register(void);
 116 extern void scsi_sysfs_unregister(void);
 117 extern void scsi_sysfs_device_initialize(struct scsi_device *);
 118 extern int scsi_sysfs_target_initialize(struct scsi_device *);
 119 extern struct scsi_transport_template blank_transport_template;
 120 extern void __scsi_remove_device(struct scsi_device *);
 121
 122 extern struct bus_type scsi_bus_type;
 123 extern struct attribute_group *scsi_sysfs_shost_attr_groups[];
 124
 125 /* scsi_netlink.c */
 126 #ifdef CONFIG_SCSI_NETLINK
 127 extern void scsi_netlink_init(void);
 128 extern void scsi_netlink_exit(void);
 129 extern struct sock *scsi_nl_sock;
 130 #else
 131 static inline void scsi_netlink_init(void) {}
 132 static inline void scsi_netlink_exit(void) {}
 133 #endif
 134
 135 /*
 136  * internal scsi timeout functions: for use by mid-layer and transport
 137  * classes.
 138  */
 139
 140 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 141 extern int scsi_internal_device_block(struct scsi_device *sdev);
 142 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
 143
 144 #endif /* _SCSI_PRIV_H */