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_target;
  11 struct scsi_host_template;
  12 struct Scsi_Host;
  13 struct scsi_nl_hdr;
  14
  15
  16 /*
  17  * Scsi Error Handler Flags
  18  */
  19 #define SCSI_EH_CANCEL_CMD      0x0001  /* Cancel this cmd */
  20
  21 #define SCSI_SENSE_VALID(scmd) \
  22         (((scmd)->sense_buffer[0] & 0x70) == 0x70)
  23
  24 /* hosts.c */
  25 extern int scsi_init_hosts(void);
  26 extern void scsi_exit_hosts(void);
  27
  28 /* scsi.c */
  29 extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
  30 extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
  31 extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
  32 #ifdef CONFIG_SCSI_LOGGING
  33 void scsi_log_send(struct scsi_cmnd *cmd);
  34 void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
  35 #else
  36 static inline void scsi_log_send(struct scsi_cmnd *cmd)
  37         { };
  38 static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
  39         { };
  40 #endif
  41
  42 /* scsi_devinfo.c */
  43
  44 /* list of keys for the lists */
  45 enum {
  46         SCSI_DEVINFO_GLOBAL = 0,
  47         SCSI_DEVINFO_SPI,
  48 };
  49
  50 extern int scsi_get_device_flags(struct scsi_device *sdev,
  51                                  const unsigned char *vendor,
  52                                  const unsigned char *model);
  53 extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
  54                                        const unsigned char *vendor,
  55                                        const unsigned char *model, int key);
  56 extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
  57                                         char *model, char *strflags,
  58                                         int flags, int key);
  59 extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
  60 extern int scsi_dev_info_add_list(int key, const char *name);
  61 extern int scsi_dev_info_remove_list(int key);
  62
  63 extern int __init scsi_init_devinfo(void);
  64 extern void scsi_exit_devinfo(void);
  65
  66 /* scsi_error.c */
  67 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
  68 extern int scsi_error_handler(void *host);
  69 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  70 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  71 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
  72 void scsi_eh_ready_devs(struct Scsi_Host *shost,
  73                         struct list_head *work_q,
  74                         struct list_head *done_q);
  75 int scsi_eh_get_sense(struct list_head *work_q,
  76                       struct list_head *done_q);
  77 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
  78
  79 /* scsi_lib.c */
  80 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  81 extern void scsi_device_unbusy(struct scsi_device *sdev);
  82 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  83 extern void scsi_next_command(struct scsi_cmnd *cmd);
  84 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
  85 extern void scsi_run_host_queues(struct Scsi_Host *shost);
  86 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
  87 extern void scsi_free_queue(struct request_queue *q);
  88 extern int scsi_init_queue(void);
  89 extern void scsi_exit_queue(void);
  90 struct request_queue;
  91 struct request;
  92 extern struct kmem_cache *scsi_sdb_cache;
  93
  94 /* scsi_proc.c */
  95 #ifdef CONFIG_SCSI_PROC_FS
  96 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
  97 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
  98 extern void scsi_proc_host_add(struct Scsi_Host *);
  99 extern void scsi_proc_host_rm(struct Scsi_Host *);
 100 extern int scsi_init_procfs(void);
 101 extern void scsi_exit_procfs(void);
 102 #else
 103 # define scsi_proc_hostdir_add(sht)     do { } while (0)
 104 # define scsi_proc_hostdir_rm(sht)      do { } while (0)
 105 # define scsi_proc_host_add(shost)      do { } while (0)
 106 # define scsi_proc_host_rm(shost)       do { } while (0)
 107 # define scsi_init_procfs()             (0)
 108 # define scsi_exit_procfs()             do { } while (0)
 109 #endif /* CONFIG_PROC_FS */
 110
 111 /* scsi_scan.c */
 112 extern int scsi_complete_async_scans(void);
 113 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
 114                                    unsigned int, unsigned int, int);
 115 extern void scsi_forget_host(struct Scsi_Host *);
 116 extern void scsi_rescan_device(struct device *);
 117
 118 /* scsi_sysctl.c */
 119 #ifdef CONFIG_SYSCTL
 120 extern int scsi_init_sysctl(void);
 121 extern void scsi_exit_sysctl(void);
 122 #else
 123 # define scsi_init_sysctl()             (0)
 124 # define scsi_exit_sysctl()             do { } while (0)
 125 #endif /* CONFIG_SYSCTL */
 126
 127 /* scsi_sysfs.c */
 128 extern int scsi_sysfs_add_sdev(struct scsi_device *);
 129 extern int scsi_sysfs_add_host(struct Scsi_Host *);
 130 extern int scsi_sysfs_register(void);
 131 extern void scsi_sysfs_unregister(void);
 132 extern void scsi_sysfs_device_initialize(struct scsi_device *);
 133 extern int scsi_sysfs_target_initialize(struct scsi_device *);
 134 extern struct scsi_transport_template blank_transport_template;
 135 extern void __scsi_remove_device(struct scsi_device *);
 136
 137 extern struct bus_type scsi_bus_type;
 138 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
 139
 140 /* scsi_netlink.c */
 141 #ifdef CONFIG_SCSI_NETLINK
 142 extern void scsi_netlink_init(void);
 143 extern void scsi_netlink_exit(void);
 144 extern struct sock *scsi_nl_sock;
 145 #else
 146 static inline void scsi_netlink_init(void) {}
 147 static inline void scsi_netlink_exit(void) {}
 148 #endif
 149
 150 /* scsi_pm.c */
 151 #ifdef CONFIG_PM
 152 extern const struct dev_pm_ops scsi_bus_pm_ops;
 153 #endif
 154 #ifdef CONFIG_PM_RUNTIME
 155 extern void scsi_autopm_get_target(struct scsi_target *);
 156 extern void scsi_autopm_put_target(struct scsi_target *);
 157 extern int scsi_autopm_get_host(struct Scsi_Host *);
 158 extern void scsi_autopm_put_host(struct Scsi_Host *);
 159 #else
 160 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
 161 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
 162 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
 163 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
 164 #endif /* CONFIG_PM_RUNTIME */
 165
 166 /*
 167  * internal scsi timeout functions: for use by mid-layer and transport
 168  * classes.
 169  */
 170
 171 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 172 extern int scsi_internal_device_block(struct scsi_device *sdev);
 173 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
 174
 175 #endif /* _SCSI_PRIV_H */