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_CANCEL_CMD      0x0001  /* Cancel this cmd */
  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 int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
  32 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
  33 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
  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 enum blk_eh_timer_return scsi_times_out(struct request *req);
  70 extern int scsi_error_handler(void *host);
  71 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  72 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  73 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
  74 void scsi_eh_ready_devs(struct Scsi_Host *shost,
  75                         struct list_head *work_q,
  76                         struct list_head *done_q);
  77 int scsi_eh_get_sense(struct list_head *work_q,
  78                       struct list_head *done_q);
  79 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
  80
  81 /* scsi_lib.c */
  82 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  83 extern void scsi_device_unbusy(struct scsi_device *sdev);
  84 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  85 extern void scsi_next_command(struct scsi_cmnd *cmd);
  86 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
  87 extern void scsi_run_host_queues(struct Scsi_Host *shost);
  88 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
  89 extern int scsi_init_queue(void);
  90 extern void scsi_exit_queue(void);
  91 struct request_queue;
  92 struct request;
  93 extern struct kmem_cache *scsi_sdb_cache;
  94
  95 /* scsi_proc.c */
  96 #ifdef CONFIG_SCSI_PROC_FS
  97 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
  98 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
  99 extern void scsi_proc_host_add(struct Scsi_Host *);
 100 extern void scsi_proc_host_rm(struct Scsi_Host *);
 101 extern int scsi_init_procfs(void);
 102 extern void scsi_exit_procfs(void);
 103 #else
 104 # define scsi_proc_hostdir_add(sht)     do { } while (0)
 105 # define scsi_proc_hostdir_rm(sht)      do { } while (0)
 106 # define scsi_proc_host_add(shost)      do { } while (0)
 107 # define scsi_proc_host_rm(shost)       do { } while (0)
 108 # define scsi_init_procfs()             (0)
 109 # define scsi_exit_procfs()             do { } while (0)
 110 #endif /* CONFIG_PROC_FS */
 111
 112 /* scsi_scan.c */
 113 extern int scsi_complete_async_scans(void);
 114 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
 115                                    unsigned int, unsigned int, int);
 116 extern void scsi_forget_host(struct Scsi_Host *);
 117 extern void scsi_rescan_device(struct device *);
 118
 119 /* scsi_sysctl.c */
 120 #ifdef CONFIG_SYSCTL
 121 extern int scsi_init_sysctl(void);
 122 extern void scsi_exit_sysctl(void);
 123 #else
 124 # define scsi_init_sysctl()             (0)
 125 # define scsi_exit_sysctl()             do { } while (0)
 126 #endif /* CONFIG_SYSCTL */
 127
 128 /* scsi_sysfs.c */
 129 extern int scsi_sysfs_add_sdev(struct scsi_device *);
 130 extern int scsi_sysfs_add_host(struct Scsi_Host *);
 131 extern int scsi_sysfs_register(void);
 132 extern void scsi_sysfs_unregister(void);
 133 extern void scsi_sysfs_device_initialize(struct scsi_device *);
 134 extern int scsi_sysfs_target_initialize(struct scsi_device *);
 135 extern struct scsi_transport_template blank_transport_template;
 136 extern void __scsi_remove_device(struct scsi_device *);
 137
 138 extern struct bus_type scsi_bus_type;
 139 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
 140
 141 /* scsi_netlink.c */
 142 #ifdef CONFIG_SCSI_NETLINK
 143 extern void scsi_netlink_init(void);
 144 extern void scsi_netlink_exit(void);
 145 extern struct sock *scsi_nl_sock;
 146 #else
 147 static inline void scsi_netlink_init(void) {}
 148 static inline void scsi_netlink_exit(void) {}
 149 #endif
 150
 151 /* scsi_pm.c */
 152 #ifdef CONFIG_PM
 153 extern const struct dev_pm_ops scsi_bus_pm_ops;
 154 #endif
 155 #ifdef CONFIG_PM_RUNTIME
 156 extern void scsi_autopm_get_target(struct scsi_target *);
 157 extern void scsi_autopm_put_target(struct scsi_target *);
 158 extern int scsi_autopm_get_host(struct Scsi_Host *);
 159 extern void scsi_autopm_put_host(struct Scsi_Host *);
 160 #else
 161 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
 162 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
 163 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
 164 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
 165 #endif /* CONFIG_PM_RUNTIME */
 166
 167 extern struct async_domain scsi_sd_probe_domain;
 168
 169 /*
 170  * internal scsi timeout functions: for use by mid-layer and transport
 171  * classes.
 172  */
 173
 174 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 175 extern int scsi_internal_device_block(struct scsi_device *sdev);
 176 extern int scsi_internal_device_unblock(struct scsi_device *sdev,
 177                                         enum scsi_device_state new_state);
 178
 179 #endif /* _SCSI_PRIV_H */