include/scsi/scsi_driver.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _SCSI_SCSI_DRIVER_H
   3 #define _SCSI_SCSI_DRIVER_H
   4
   5 #include <linux/blk_types.h>
   6 #include <linux/device.h>
   7 #include <scsi/scsi_cmnd.h>
   8
   9 struct module;
  10 struct request;
  11
  12 struct scsi_driver {
  13         struct device_driver    gendrv;
  14
  15         int (*resume)(struct device *);
  16         void (*rescan)(struct device *);
  17         blk_status_t (*init_command)(struct scsi_cmnd *);
  18         void (*uninit_command)(struct scsi_cmnd *);
  19         int (*done)(struct scsi_cmnd *);
  20         int (*eh_action)(struct scsi_cmnd *, int);
  21         void (*eh_reset)(struct scsi_cmnd *);
  22 };
  23 #define to_scsi_driver(drv) \
  24         container_of((drv), struct scsi_driver, gendrv)
  25
  26 #define scsi_register_driver(drv) \
  27         __scsi_register_driver(drv, THIS_MODULE)
  28 int __scsi_register_driver(struct device_driver *, struct module *);
  29 #define scsi_unregister_driver(drv) \
  30         driver_unregister(drv);
  31
  32 extern int scsi_register_interface(struct class_interface *);
  33 #define scsi_unregister_interface(intf) \
  34         class_interface_unregister(intf)
  35
  36 /* make sure not to use it with passthrough commands */
  37 static inline struct scsi_driver *scsi_cmd_to_driver(struct scsi_cmnd *cmd)
  38 {
  39         return to_scsi_driver(cmd->device->sdev_gendev.driver);
  40 }
  41
  42 #endif /* _SCSI_SCSI_DRIVER_H */