LXR linux/drivers/scsi/scsi

   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
   8struct request_queue;
   9struct request;
  10struct scsi_cmnd;
  11struct scsi_device;
  12struct scsi_target;
  13struct scsi_host_template;
  14struct Scsi_Host;
  15struct 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 */
  28extern int scsi_init_hosts(void);
  29extern void scsi_exit_hosts(void);
  30
  31/* scsi.c */
  32extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
  33extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
  34#ifdef CONFIG_SCSI_LOGGING
  35void scsi_log_send(struct scsi_cmnd *cmd);
  36void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
  37#else
  38static inline void scsi_log_send(struct scsi_cmnd *cmd) 
  39        { };
  40static 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 */
  47enum {
  48        SCSI_DEVINFO_GLOBAL = 0,
  49        SCSI_DEVINFO_SPI,
  50};
  51
  52extern int scsi_get_device_flags(struct scsi_device *sdev,
  53                                 const unsigned char *vendor,
  54                                 const unsigned char *model);
  55extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
  56                                       const unsigned char *vendor,
  57                                       const unsigned char *model, int key);
  58extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
  59                                        char *model, char *strflags,
  60                                        int flags, int key);
  61extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
  62extern int scsi_dev_info_add_list(int key, const char *name);
  63extern int scsi_dev_info_remove_list(int key);
  64
  65extern int __init scsi_init_devinfo(void);
  66extern void scsi_exit_devinfo(void);
  67
  68/* scsi_error.c */
  69extern void scmd_eh_abort_handler(struct work_struct *work);
  70extern enum blk_eh_timer_return scsi_times_out(struct request *req);
  71extern int scsi_error_handler(void *host);
  72extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  73extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  74extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
  75void scsi_eh_ready_devs(struct Scsi_Host *shost,
  76                        struct list_head *work_q,
  77                        struct list_head *done_q);
  78int scsi_eh_get_sense(struct list_head *work_q,
  79                      struct list_head *done_q);
  80int scsi_noretry_cmd(struct scsi_cmnd *scmd);
  81
  82/* scsi_lib.c */
  83extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  84extern void scsi_device_unbusy(struct scsi_device *sdev);
  85extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  86extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
  87extern void scsi_run_host_queues(struct Scsi_Host *shost);
  88extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
  89extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
  90extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
  91extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
  92extern int scsi_init_queue(void);
  93extern void scsi_exit_queue(void);
  94struct request_queue;
  95struct request;
  96extern struct kmem_cache *scsi_sdb_cache;
  97
  98/* scsi_proc.c */
  99#ifdef CONFIG_SCSI_PROC_FS
 100extern void scsi_proc_hostdir_add(struct scsi_host_template *);
 101extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
 102extern void scsi_proc_host_add(struct Scsi_Host *);
 103extern void scsi_proc_host_rm(struct Scsi_Host *);
 104extern int scsi_init_procfs(void);
 105extern 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 */
 116extern char scsi_scan_type[];
 117extern int scsi_complete_async_scans(void);
 118extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
 119                                   unsigned int, u64, enum scsi_scan_mode);
 120extern void scsi_forget_host(struct Scsi_Host *);
 121extern void scsi_rescan_device(struct device *);
 122
 123/* scsi_sysctl.c */
 124#ifdef CONFIG_SYSCTL
 125extern int scsi_init_sysctl(void);
 126extern 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 */
 133extern int scsi_sysfs_add_sdev(struct scsi_device *);
 134extern int scsi_sysfs_add_host(struct Scsi_Host *);
 135extern int scsi_sysfs_register(void);
 136extern void scsi_sysfs_unregister(void);
 137extern void scsi_sysfs_device_initialize(struct scsi_device *);
 138extern int scsi_sysfs_target_initialize(struct scsi_device *);
 139extern struct scsi_transport_template blank_transport_template;
 140extern void __scsi_remove_device(struct scsi_device *);
 141
 142extern struct bus_type scsi_bus_type;
 143extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
 144
 145/* scsi_netlink.c */
 146#ifdef CONFIG_SCSI_NETLINK
 147extern void scsi_netlink_init(void);
 148extern void scsi_netlink_exit(void);
 149extern struct sock *scsi_nl_sock;
 150#else
 151static inline void scsi_netlink_init(void) {}
 152static inline void scsi_netlink_exit(void) {}
 153#endif
 154
 155/* scsi_pm.c */
 156#ifdef CONFIG_PM
 157extern const struct dev_pm_ops scsi_bus_pm_ops;
 158
 159extern void scsi_autopm_get_target(struct scsi_target *);
 160extern void scsi_autopm_put_target(struct scsi_target *);
 161extern int scsi_autopm_get_host(struct Scsi_Host *);
 162extern void scsi_autopm_put_host(struct Scsi_Host *);
 163#else
 164static inline void scsi_autopm_get_target(struct scsi_target *t) {}
 165static inline void scsi_autopm_put_target(struct scsi_target *t) {}
 166static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
 167static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
 168#endif /* CONFIG_PM */
 169
 170extern struct async_domain scsi_sd_pm_domain;
 171extern struct async_domain scsi_sd_probe_domain;
 172
 173/* scsi_dh.c */
 174#ifdef CONFIG_SCSI_DH
 175int scsi_dh_add_device(struct scsi_device *sdev);
 176void scsi_dh_release_device(struct scsi_device *sdev);
 177#else
 178static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; }
 179static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
 180#endif
 181static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }
 182
 183/* 
 184 * internal scsi timeout functions: for use by mid-layer and transport
 185 * classes.
 186 */
 187
 188#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 189extern int scsi_internal_device_block(struct scsi_device *sdev);
 190extern int scsi_internal_device_unblock(struct scsi_device *sdev,
 191                                        enum scsi_device_state new_state);
 192
 193#endif /* _SCSI_PRIV_H */
 194