include/linux/sed-opal.h

   1 /*
   2  * Copyright © 2016 Intel Corporation
   3  *
   4  * Authors:
   5  *    Rafael Antognolli <rafael.antognolli@intel.com>
   6  *    Scott  Bauer      <scott.bauer@intel.com>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms and conditions of the GNU General Public License,
  10  * version 2, as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  */
  17
  18 #ifndef LINUX_OPAL_H
  19 #define LINUX_OPAL_H
  20
  21 #include <uapi/linux/sed-opal.h>
  22 #include <linux/kernel.h>
  23
  24 struct opal_dev;
  25
  26 typedef int (sec_send_recv)(void *data, u16 spsp, u8 secp, void *buffer,
  27                 size_t len, bool send);
  28
  29 #ifdef CONFIG_BLK_SED_OPAL
  30 void free_opal_dev(struct opal_dev *dev);
  31 bool opal_unlock_from_suspend(struct opal_dev *dev);
  32 struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv);
  33 int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *ioctl_ptr);
  34
  35 static inline bool is_sed_ioctl(unsigned int cmd)
  36 {
  37         switch (cmd) {
  38         case IOC_OPAL_SAVE:
  39         case IOC_OPAL_LOCK_UNLOCK:
  40         case IOC_OPAL_TAKE_OWNERSHIP:
  41         case IOC_OPAL_ACTIVATE_LSP:
  42         case IOC_OPAL_SET_PW:
  43         case IOC_OPAL_ACTIVATE_USR:
  44         case IOC_OPAL_REVERT_TPR:
  45         case IOC_OPAL_LR_SETUP:
  46         case IOC_OPAL_ADD_USR_TO_LR:
  47         case IOC_OPAL_ENABLE_DISABLE_MBR:
  48         case IOC_OPAL_ERASE_LR:
  49         case IOC_OPAL_SECURE_ERASE_LR:
  50                 return true;
  51         }
  52         return false;
  53 }
  54 #else
  55 static inline void free_opal_dev(struct opal_dev *dev)
  56 {
  57 }
  58
  59 static inline bool is_sed_ioctl(unsigned int cmd)
  60 {
  61         return false;
  62 }
  63
  64 static inline int sed_ioctl(struct opal_dev *dev, unsigned int cmd,
  65                             void __user *ioctl_ptr)
  66 {
  67         return 0;
  68 }
  69 static inline bool opal_unlock_from_suspend(struct opal_dev *dev)
  70 {
  71         return false;
  72 }
  73 #define init_opal_dev(data, send_recv)          NULL
  74 #endif /* CONFIG_BLK_SED_OPAL */
  75 #endif /* LINUX_OPAL_H */