LXR linux/drivers/scsi/scsi

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _SCSI_PRIV_H
   3#define _SCSI_PRIV_H
   4
   5#include <linux/device.h>
   6#include <linux/async.h>
   7#include <scsi/scsi_device.h>
   8
   9struct request_queue;
  10struct request;
  11struct scsi_cmnd;
  12struct scsi_device;
  13struct scsi_target;
  14struct scsi_host_template;
  15struct Scsi_Host;
  16struct scsi_nl_hdr;
  17
  18#define SCSI_CMD_RETRIES_NO_LIMIT -1
  19
  20/*
  21 * Scsi Error Handler Flags
  22 */
  23#define SCSI_EH_ABORT_SCHEDULED 0x0002  /* Abort has been scheduled */
  24
  25#define SCSI_SENSE_VALID(scmd) \
  26        (((scmd)->sense_buffer[0] & 0x70) == 0x70)
  27
  28/* hosts.c */
  29extern int scsi_init_hosts(void);
  30extern void scsi_exit_hosts(void);
  31
  32/* scsi.c */
  33int scsi_init_sense_cache(struct Scsi_Host *shost);
  34void scsi_init_command(struct scsi_device *dev, struct scsi_cmnd *cmd);
  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 scsi_devinfo_key {
  49        SCSI_DEVINFO_GLOBAL = 0,
  50        SCSI_DEVINFO_SPI,
  51};
  52
  53extern blist_flags_t scsi_get_device_flags(struct scsi_device *sdev,
  54                                           const unsigned char *vendor,
  55                                           const unsigned char *model);
  56extern blist_flags_t scsi_get_device_flags_keyed(struct scsi_device *sdev,
  57                                                 const unsigned char *vendor,
  58                                                 const unsigned char *model,
  59                                                 enum scsi_devinfo_key key);
  60extern int scsi_dev_info_list_add_keyed(int compatible, char *vendor,
  61                                        char *model, char *strflags,
  62                                        blist_flags_t flags,
  63                                        enum scsi_devinfo_key key);
  64extern int scsi_dev_info_list_del_keyed(char *vendor, char *model,
  65                                        enum scsi_devinfo_key key);
  66extern int scsi_dev_info_add_list(enum scsi_devinfo_key key, const char *name);
  67extern int scsi_dev_info_remove_list(enum scsi_devinfo_key key);
  68
  69extern int __init scsi_init_devinfo(void);
  70extern void scsi_exit_devinfo(void);
  71
  72/* scsi_error.c */
  73extern void scmd_eh_abort_handler(struct work_struct *work);
  74extern enum blk_eh_timer_return scsi_times_out(struct request *req);
  75extern int scsi_error_handler(void *host);
  76extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
  77extern void scsi_eh_wakeup(struct Scsi_Host *shost);
  78extern void scsi_eh_scmd_add(struct scsi_cmnd *);
  79void scsi_eh_ready_devs(struct Scsi_Host *shost,
  80                        struct list_head *work_q,
  81                        struct list_head *done_q);
  82int scsi_eh_get_sense(struct list_head *work_q,
  83                      struct list_head *done_q);
  84int scsi_noretry_cmd(struct scsi_cmnd *scmd);
  85
  86/* scsi_lib.c */
  87extern int scsi_maybe_unblock_host(struct scsi_device *sdev);
  88extern void scsi_device_unbusy(struct scsi_device *sdev, struct scsi_cmnd *cmd);
  89extern void scsi_queue_insert(struct scsi_cmnd *cmd, int reason);
  90extern void scsi_io_completion(struct scsi_cmnd *, unsigned int);
  91extern void scsi_run_host_queues(struct Scsi_Host *shost);
  92extern void scsi_requeue_run_queue(struct work_struct *work);
  93extern struct request_queue *scsi_mq_alloc_queue(struct scsi_device *sdev);
  94extern void scsi_start_queue(struct scsi_device *sdev);
  95extern int scsi_mq_setup_tags(struct Scsi_Host *shost);
  96extern void scsi_mq_destroy_tags(struct Scsi_Host *shost);
  97extern void scsi_exit_queue(void);
  98extern void scsi_evt_thread(struct work_struct *work);
  99struct request_queue;
 100struct request;
 101
 102/* scsi_proc.c */
 103#ifdef CONFIG_SCSI_PROC_FS
 104extern void scsi_proc_hostdir_add(struct scsi_host_template *);
 105extern void scsi_proc_hostdir_rm(struct scsi_host_template *);
 106extern void scsi_proc_host_add(struct Scsi_Host *);
 107extern void scsi_proc_host_rm(struct Scsi_Host *);
 108extern int scsi_init_procfs(void);
 109extern void scsi_exit_procfs(void);
 110#else
 111# define scsi_proc_hostdir_add(sht)     do { } while (0)
 112# define scsi_proc_hostdir_rm(sht)      do { } while (0)
 113# define scsi_proc_host_add(shost)      do { } while (0)
 114# define scsi_proc_host_rm(shost)       do { } while (0)
 115# define scsi_init_procfs()             (0)
 116# define scsi_exit_procfs()             do { } while (0)
 117#endif /* CONFIG_PROC_FS */
 118
 119/* scsi_scan.c */
 120extern char scsi_scan_type[];
 121extern int scsi_complete_async_scans(void);
 122extern int scsi_scan_host_selected(struct Scsi_Host *, unsigned int,
 123                                   unsigned int, u64, enum scsi_scan_mode);
 124extern void scsi_forget_host(struct Scsi_Host *);
 125extern void scsi_rescan_device(struct device *);
 126
 127/* scsi_sysctl.c */
 128#ifdef CONFIG_SYSCTL
 129extern int scsi_init_sysctl(void);
 130extern void scsi_exit_sysctl(void);
 131#else
 132# define scsi_init_sysctl()             (0)
 133# define scsi_exit_sysctl()             do { } while (0)
 134#endif /* CONFIG_SYSCTL */
 135
 136/* scsi_sysfs.c */
 137extern int scsi_sysfs_add_sdev(struct scsi_device *);
 138extern int scsi_sysfs_add_host(struct Scsi_Host *);
 139extern int scsi_sysfs_register(void);
 140extern void scsi_sysfs_unregister(void);
 141extern void scsi_sysfs_device_initialize(struct scsi_device *);
 142extern int scsi_sysfs_target_initialize(struct scsi_device *);
 143extern struct scsi_transport_template blank_transport_template;
 144extern void __scsi_remove_device(struct scsi_device *);
 145
 146extern struct bus_type scsi_bus_type;
 147extern const struct attribute_group *scsi_sysfs_shost_attr_groups[];
 148
 149/* scsi_netlink.c */
 150#ifdef CONFIG_SCSI_NETLINK
 151extern void scsi_netlink_init(void);
 152extern void scsi_netlink_exit(void);
 153extern struct sock *scsi_nl_sock;
 154#else
 155static inline void scsi_netlink_init(void) {}
 156static inline void scsi_netlink_exit(void) {}
 157#endif
 158
 159/* scsi_pm.c */
 160#ifdef CONFIG_PM
 161extern const struct dev_pm_ops scsi_bus_pm_ops;
 162
 163extern void scsi_autopm_get_target(struct scsi_target *);
 164extern void scsi_autopm_put_target(struct scsi_target *);
 165extern int scsi_autopm_get_host(struct Scsi_Host *);
 166extern void scsi_autopm_put_host(struct Scsi_Host *);
 167#else
 168static inline void scsi_autopm_get_target(struct scsi_target *t) {}
 169static inline void scsi_autopm_put_target(struct scsi_target *t) {}
 170static inline int scsi_autopm_get_host(struct Scsi_Host *h) { return 0; }
 171static inline void scsi_autopm_put_host(struct Scsi_Host *h) {}
 172#endif /* CONFIG_PM */
 173
 174extern struct async_domain scsi_sd_pm_domain;
 175
 176/* scsi_dh.c */
 177#ifdef CONFIG_SCSI_DH
 178void scsi_dh_add_device(struct scsi_device *sdev);
 179void scsi_dh_release_device(struct scsi_device *sdev);
 180#else
 181static inline void scsi_dh_add_device(struct scsi_device *sdev) { }
 182static inline void scsi_dh_release_device(struct scsi_device *sdev) { }
 183#endif
 184
 185/* 
 186 * internal scsi timeout functions: for use by mid-layer and transport
 187 * classes.
 188 */
 189
 190#define SCSI_DEVICE_BLOCK_MAX_TIMEOUT   600     /* units in seconds */
 191
 192#endif /* _SCSI_PRIV_H */
 193