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_add_list(int key, const char *name);
  60 extern int scsi_dev_info_remove_list(int key);
  61
  62 extern int __init scsi_init_devinfo(void);
  63 extern void scsi_exit_devinfo(void);
  64
  65 /* scsi_error.c */
  66 extern enum blk_eh_timer_return scsi_times_out(struct request *req);
  67 extern int scsi_error_handler(void *host);
  68 extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  69 extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  70 extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
  71 void scsi_eh_ready_devs(struct Scsi_Host *shost,
  72                         struct list_head *work_q,
  73                         struct list_head *done_q);
  74 int scsi_eh_get_sense(struct list_head *work_q,
  75                       struct list_head *done_q);
  76 int scsi_noretry_cmd(struct scsi_cmnd *scmd);
  77
  78 /* scsi_lib.c */
  79 extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  80 extern void scsi_device_unbusy(struct scsi_device *sdev);
  81 extern int scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  82 extern void scsi_next_command(struct scsi_cmnd *cmd);
  83 extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
  84 extern void scsi_run_host_queues(struct Scsi_Host *shost);
  85 extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
  86 extern void scsi_free_queue(struct request_queue *q);
  87 extern int scsi_init_queue(void);
  88 extern void scsi_exit_queue(void);
  89 struct request_queue;
  90 struct request;
  91 extern struct kmem_cache *scsi_sdb_cache;
  92
  93 /* scsi_proc.c */
  94 #ifdef CONFIG_SCSI_PROC_FS
  95 extern void scsi_proc_hostdir_add(struct scsi_host_template *);
  96 extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
  97 extern void scsi_proc_host_add(struct Scsi_Host *);
  98 extern void scsi_proc_host_rm(struct Scsi_Host *);
  99 extern int scsi_init_procfs(void);
 100 extern void scsi_exit_procfs(void);
 101 #else
 102 # define scsi_proc_hostdir_add(sht)     do { } while (0)
 103 # define scsi_proc_hostdir_rm(sht)      do { } while (0)
 104 # define scsi_proc_host_add(shost)      do { } while (0)
 105 # define scsi_proc_host_rm(shost)       do { } while (0)
 106 # define scsi_init_procfs()             (0)
 107 # define scsi_exit_procfs()             do { } while (0)
 108 #endif /* CONFIG_PROC_FS */
 109
 110 /* scsi_scan.c */
 111 extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
 112                                    unsigned int, unsigned int, int);
 113 extern void scsi_forget_host(struct Scsi_Host *);
 114 extern void scsi_rescan_device(struct device *);
 115
 116 /* scsi_sysctl.c */
 117 #ifdef CONFIG_SYSCTL
 118 extern int scsi_init_sysctl(void);
 119 extern void scsi_exit_sysctl(void);
 120 #else
 121 # define scsi_init_sysctl()             (0)
 122 # define scsi_exit_sysctl()             do { } while (0)
 123 #endif /* CONFIG_SYSCTL */
 124
 125 /* scsi_sysfs.c */
 126 extern int scsi_sysfs_add_sdev(struct scsi_device *);
 127 extern int scsi_sysfs_add_host(struct Scsi_Host *);
 128 extern int scsi_sysfs_register(void);
 129 extern void scsi_sysfs_unregister(void);
 130 extern void scsi_sysfs_device_initialize(struct scsi_device *);
 131 extern int scsi_sysfs_target_initialize(struct scsi_device *);
 132 extern struct scsi_transport_template blank_transport_template;
 133 extern void __scsi_remove_device(struct scsi_device *);
 134
 135 extern struct bus_type scsi_bus_type;
 136 extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
 137
 138 /* scsi_netlink.c */
 139 #ifdef CONFIG_SCSI_NETLINK
 140 extern void scsi_netlink_init(void);
 141 extern void scsi_netlink_exit(void);
 142 extern struct sock *scsi_nl_sock;
 143 #else
 144 static inline void scsi_netlink_init(void) {}
 145 static inline void scsi_netlink_exit(void) {}
 146 #endif
 147
 148 /* scsi_pm.c */
 149 #ifdef CONFIG_PM_OPS
 150 extern const struct dev_pm_ops scsi_bus_pm_ops;
 151 #endif
 152 #ifdef CONFIG_PM_RUNTIME
 153 extern void scsi_autopm_get_target(struct scsi_target *);
 154 extern void scsi_autopm_put_target(struct scsi_target *);
 155 extern int scsi_autopm_get_host(struct Scsi_Host *);
 156 extern void scsi_autopm_put_host(struct Scsi_Host *);
 157 #else
 158 static inline void scsi_autopm_get_target(struct scsi_target *t) {}
 159 static inline void scsi_autopm_put_target(struct scsi_target *t) {}
 160 static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
 161 static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
 162 #endif /* CONFIG_PM_RUNTIME */
 163
 164 /*
 165  * internal scsi timeout functions: for use by mid-layer and transport
 166  * classes.
 167  */
 168
 169 #define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 170 extern int scsi_internal_device_block(struct scsi_device *sdev);
 171 extern int scsi_internal_device_unblock(struct scsi_device *sdev);
 172
 173 #endif /* _SCSI_PRIV_H */