include/linux/sed-opal.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright © 2016 Intel Corporation
   4  *
   5  * Authors:
   6  *    Rafael Antognolli <rafael.antognolli@intel.com>
   7  *    Scott  Bauer      <scott.bauer@intel.com>
   8  */
   9
  10 #ifndef LINUX_OPAL_H
  11 #define LINUX_OPAL_H
  12
  13 #include <uapi/linux/sed-opal.h>
  14 #include <linux/compiler_types.h>
  15 #include <linux/types.h>
  16
  17 struct opal_dev;
  18
  19 typedef int (sec_send_recv)(void *data, u16 spsp, u8 secp, void *buffer,
  20                 size_t len, bool send);
  21
  22 #ifdef CONFIG_BLK_SED_OPAL
  23 void free_opal_dev(struct opal_dev *dev);
  24 bool opal_unlock_from_suspend(struct opal_dev *dev);
  25 struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv);
  26 int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *ioctl_ptr);
  27
  28 #define OPAL_AUTH_KEY           "opal-boot-pin"
  29 #define OPAL_AUTH_KEY_PREV      "opal-boot-pin-prev"
  30
  31 static inline bool is_sed_ioctl(unsigned int cmd)
  32 {
  33         switch (cmd) {
  34         case IOC_OPAL_SAVE:
  35         case IOC_OPAL_LOCK_UNLOCK:
  36         case IOC_OPAL_TAKE_OWNERSHIP:
  37         case IOC_OPAL_ACTIVATE_LSP:
  38         case IOC_OPAL_SET_PW:
  39         case IOC_OPAL_ACTIVATE_USR:
  40         case IOC_OPAL_REVERT_TPR:
  41         case IOC_OPAL_LR_SETUP:
  42         case IOC_OPAL_ADD_USR_TO_LR:
  43         case IOC_OPAL_ENABLE_DISABLE_MBR:
  44         case IOC_OPAL_ERASE_LR:
  45         case IOC_OPAL_SECURE_ERASE_LR:
  46         case IOC_OPAL_PSID_REVERT_TPR:
  47         case IOC_OPAL_MBR_DONE:
  48         case IOC_OPAL_WRITE_SHADOW_MBR:
  49         case IOC_OPAL_GENERIC_TABLE_RW:
  50         case IOC_OPAL_GET_STATUS:
  51         case IOC_OPAL_GET_LR_STATUS:
  52         case IOC_OPAL_GET_GEOMETRY:
  53         case IOC_OPAL_DISCOVERY:
  54         case IOC_OPAL_REVERT_LSP:
  55         case IOC_OPAL_SET_SID_PW:
  56                 return true;
  57         }
  58         return false;
  59 }
  60 #else
  61 static inline void free_opal_dev(struct opal_dev *dev)
  62 {
  63 }
  64
  65 static inline bool is_sed_ioctl(unsigned int cmd)
  66 {
  67         return false;
  68 }
  69
  70 static inline int sed_ioctl(struct opal_dev *dev, unsigned int cmd,
  71                             void __user *ioctl_ptr)
  72 {
  73         return 0;
  74 }
  75 static inline bool opal_unlock_from_suspend(struct opal_dev *dev)
  76 {
  77         return false;
  78 }
  79 #define init_opal_dev(data, send_recv)          NULL
  80 #endif /* CONFIG_BLK_SED_OPAL */
  81 #endif /* LINUX_OPAL_H */