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 bool scsi_use_blk_mq;
  33extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
  34extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
  35#ifdef CONFIG_SCSI_LOGGING
  36void scsi_log_send(struct scsi_cmnd *cmd);
  37void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
  38#else
  39static inline void scsi_log_send(struct scsi_cmnd *cmd) 
  40        { };
  41static inline void scsi_log_completion(struct scsi_cmnd *cmd, int disposition)
  42        { };
  43#endif
  44
  45/* scsi_devinfo.c */
  46
  47/* list of keys for the lists */
  48enum {
  49        SCSI_DEVINFO_GLOBAL = 0,
  50        SCSI_DEVINFO_SPI,
  51};
  52
  53extern int scsi_get_device_flags(struct scsi_device *sdev,
  54                                 const unsigned char *vendor,
  55                                 const unsigned char *model);
  56extern int scsi_get_device_flags_keyed(struct scsi_device *sdev,
  57                                       const unsigned char *vendor,
  58                                       const unsigned char *model, int key);
  59extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
  60                                        char *model, char *strflags,
  61                                        int flags, int key);
  62extern int scsi_dev_info_list_del_keyed(char *vendor, char *model, int key);
  63extern int scsi_dev_info_add_list(int key, const char *name);
  64extern int scsi_dev_info_remove_list(int key);
  65
  66extern int __init scsi_init_devinfo(void);
  67extern void scsi_exit_devinfo(void);
  68
  69/* scsi_error.c */
  70extern void scmd_eh_abort_handler(struct work_struct *work);
  71extern enum blk_eh_timer_return scsi_times_out(struct request *req);
  72extern int scsi_error_handler(void *host);
  73extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  74extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  75extern int scsi_eh_scmd_add(struct scsi_cmnd *, int);
  76void scsi_eh_ready_devs(struct Scsi_Host *shost,
  77                        struct list_head *work_q,
  78                        struct list_head *done_q);
  79int scsi_eh_get_sense(struct list_head *work_q,
  80                      struct list_head *done_q);
  81int scsi_noretry_cmd(struct scsi_cmnd *scmd);
  82
  83/* scsi_lib.c */
  84extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  85extern void scsi_device_unbusy(struct scsi_device *sdev);
  86extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  87extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
  88extern void scsi_run_host_queues(struct Scsi_Host *shost);
  89extern void scsi_requeue_run_queue(struct work_struct *work);
  90extern struct request_queue *scsi_alloc_queue(struct scsi_device *sdev);
  91extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
  92extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
  93extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
  94extern int scsi_init_queue(void);
  95extern void scsi_exit_queue(void);
  96extern void scsi_evt_thread(struct work_struct *work);
  97struct request_queue;
  98struct request;
  99extern struct kmem_cache *scsi_sdb_cache;
 100
 101/* scsi_proc.c */
 102#ifdef CONFIG_SCSI_PROC_FS
 103extern void scsi_proc_hostdir_add(struct scsi_host_template *);
 104extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
 105extern void scsi_proc_host_add(struct Scsi_Host *);
 106extern void scsi_proc_host_rm(struct Scsi_Host *);
 107extern int scsi_init_procfs(void);
 108extern void scsi_exit_procfs(void);
 109#else
 110# define scsi_proc_hostdir_add(sht)     do { } while (0)
 111# define scsi_proc_hostdir_rm(sht)      do { } while (0)
 112# define scsi_proc_host_add(shost)      do { } while (0)
 113# define scsi_proc_host_rm(shost)       do { } while (0)
 114# define scsi_init_procfs()             (0)
 115# define scsi_exit_procfs()             do { } while (0)
 116#endif /* CONFIG_PROC_FS */
 117
 118/* scsi_scan.c */
 119extern char scsi_scan_type[];
 120extern int scsi_complete_async_scans(void);
 121extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
 122                                   unsigned int, u64, enum scsi_scan_mode);
 123extern void scsi_forget_host(struct Scsi_Host *);
 124extern void scsi_rescan_device(struct device *);
 125
 126/* scsi_sysctl.c */
 127#ifdef CONFIG_SYSCTL
 128extern int scsi_init_sysctl(void);
 129extern void scsi_exit_sysctl(void);
 130#else
 131# define scsi_init_sysctl()             (0)
 132# define scsi_exit_sysctl()             do { } while (0)
 133#endif /* CONFIG_SYSCTL */
 134
 135/* scsi_sysfs.c */
 136extern int scsi_sysfs_add_sdev(struct scsi_device *);
 137extern int scsi_sysfs_add_host(struct Scsi_Host *);
 138extern int scsi_sysfs_register(void);
 139extern void scsi_sysfs_unregister(void);
 140extern void scsi_sysfs_device_initialize(struct scsi_device *);
 141extern int scsi_sysfs_target_initialize(struct scsi_device *);
 142extern struct scsi_transport_template blank_transport_template;
 143extern void __scsi_remove_device(struct scsi_device *);
 144
 145extern struct bus_type scsi_bus_type;
 146extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
 147
 148/* scsi_netlink.c */
 149#ifdef CONFIG_SCSI_NETLINK
 150extern void scsi_netlink_init(void);
 151extern void scsi_netlink_exit(void);
 152extern struct sock *scsi_nl_sock;
 153#else
 154static inline void scsi_netlink_init(void) {}
 155static inline void scsi_netlink_exit(void) {}
 156#endif
 157
 158/* scsi_pm.c */
 159#ifdef CONFIG_PM
 160extern const struct dev_pm_ops scsi_bus_pm_ops;
 161
 162extern void scsi_autopm_get_target(struct scsi_target *);
 163extern void scsi_autopm_put_target(struct scsi_target *);
 164extern int scsi_autopm_get_host(struct Scsi_Host *);
 165extern void scsi_autopm_put_host(struct Scsi_Host *);
 166#else
 167static inline void scsi_autopm_get_target(struct scsi_target *t) {}
 168static inline void scsi_autopm_put_target(struct scsi_target *t) {}
 169static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
 170static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
 171#endif /* CONFIG_PM */
 172
 173extern struct async_domain scsi_sd_pm_domain;
 174extern struct async_domain scsi_sd_probe_domain;
 175
 176/* scsi_dh.c */
 177#ifdef CONFIG_SCSI_DH
 178int scsi_dh_add_device(struct scsi_device *sdev);
 179void scsi_dh_release_device(struct scsi_device *sdev);
 180#else
 181static inline int scsi_dh_add_device(struct scsi_device *sdev) { return 0; }
 182static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
 183#endif
 184static inline void scsi_dh_remove_device(struct scsi_device *sdev) { }
 185
 186/* 
 187 * internal scsi timeout functions: for use by mid-layer and transport
 188 * classes.
 189 */
 190
 191#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 192extern int scsi_internal_device_block(struct scsi_device *sdev);
 193extern int scsi_internal_device_unblock(struct scsi_device *sdev,
 194                                        enum scsi_device_state new_state);
 195
 196#endif /* _SCSI_PRIV_H */
 197