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 #define SCSI_EH_ABORT_SCHEDULED 0x0002  /* Abort has been scheduled */
  23
  24 #define SCSI_SENSE_VALID(scmd) \
  25         (((scmd)->sense_buffer[0] & 0x70) == 0x70)
  26
  27 /* hosts.c */
  28 extern int scsi_init_hosts(void);
  29 extern void scsi_exit_hosts(void);
  30
  31 /* scsi.c */
  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 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 int scsi_eh_scmd_add(struct scsi_cmnd *, int);
  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 int scsi_maybe_unblock_host(struct scsi_device *sdev);
  84 extern void scsi_device_unbusy(struct scsi_device *sdev);
  85 extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  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 struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
  90 extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
  91 extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
  92 extern int scsi_init_queue(void);
  93 extern void scsi_exit_queue(void);
  94 struct request_queue;
  95 struct request;
  96 extern struct kmem_cache *scsi_sdb_cache;
  97
  98 /* scsi_proc.c */
  99 #ifdef CONFIG_SCSI_PROC_FS
 100 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
 101 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
 102 extern void scsi_proc_host_add(struct Scsi_Host *);
 103 extern void scsi_proc_host_rm(struct Scsi_Host *);
 104 extern int scsi_init_procfs(void);
 105 extern void scsi_exit_procfs(void);
 106 #else
 107 # define scsi_proc_hostdir_add(sht)     do { } while (0)
 108 # define scsi_proc_hostdir_rm(sht)      do { } while (0)
 109 # define scsi_proc_host_add(shost)      do { } while (0)
 110 # define scsi_proc_host_rm(shost)       do { } while (0)
 111 # define scsi_init_procfs()             (0)
 112 # define scsi_exit_procfs()             do { } while (0)
 113 #endif /* CONFIG_PROC_FS */
 114
 115 /* scsi_scan.c */
 116 extern char scsi_scan_type[];
 117 extern int scsi_complete_async_scans(void);
 118 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
 119                                    unsigned int, u64, int);
 120 extern void scsi_forget_host(struct Scsi_Host *);
 121 extern void scsi_rescan_device(struct device *);
 122
 123 /* scsi_sysctl.c */
 124 #ifdef CONFIG_SYSCTL
 125 extern int scsi_init_sysctl(void);
 126 extern void scsi_exit_sysctl(void);
 127 #else
 128 # define scsi_init_sysctl()             (0)
 129 # define scsi_exit_sysctl()             do { } while (0)
 130 #endif /* CONFIG_SYSCTL */
 131
 132 /* scsi_sysfs.c */
 133 extern int scsi_sysfs_add_sdev(struct scsi_device *);
 134 extern int scsi_sysfs_add_host(struct Scsi_Host *);
 135 extern int scsi_sysfs_register(void);
 136 extern void scsi_sysfs_unregister(void);
 137 extern void scsi_sysfs_device_initialize(struct scsi_device *);
 138 extern int scsi_sysfs_target_initialize(struct scsi_device *);
 139 extern struct scsi_transport_template blank_transport_template;
 140 extern void __scsi_remove_device(struct scsi_device *);
 141
 142 extern struct bus_type scsi_bus_type;
 143 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
 144
 145 /* scsi_netlink.c */
 146 #ifdef CONFIG_SCSI_NETLINK
 147 extern void scsi_netlink_init(void);
 148 extern void scsi_netlink_exit(void);
 149 extern struct sock *scsi_nl_sock;
 150 #else
 151 static inline void scsi_netlink_init(void) {}
 152 static inline void scsi_netlink_exit(void) {}
 153 #endif
 154
 155 /* scsi_pm.c */
 156 #ifdef CONFIG_PM
 157 extern const struct dev_pm_ops scsi_bus_pm_ops;
 158
 159 extern void scsi_autopm_get_target(struct scsi_target *);
 160 extern void scsi_autopm_put_target(struct scsi_target *);
 161 extern int scsi_autopm_get_host(struct Scsi_Host *);
 162 extern void scsi_autopm_put_host(struct Scsi_Host *);
 163 #else
 164 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
 165 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
 166 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
 167 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
 168 #endif /* CONFIG_PM */
 169
 170 extern struct async_domain scsi_sd_pm_domain;
 171 extern struct async_domain scsi_sd_probe_domain;
 172
 173 /* scsi_dh.c */
 174 #ifdef CONFIG_SCSI_DH
 175 int scsi_dh_add_device(struct scsi_device *sdev);
 176 void scsi_dh_release_device(struct scsi_device *sdev);
 177 void scsi_dh_remove_device(struct scsi_device *sdev);
 178 #else
 179 static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; }
 180 static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
 181 static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }
 182 #endif
 183
 184 /*
 185  * internal scsi timeout functions: for use by mid-layer and transport
 186  * classes.
 187  */
 188
 189 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 190 extern int scsi_internal_device_block(struct scsi_device *sdev);
 191 extern int scsi_internal_device_unblock(struct scsi_device *sdev,
 192                                         enum scsi_device_state new_state);
 193
 194 #endif /* _SCSI_PRIV_H */