cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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sed-opal.h (1696B)

      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/kernel.h>
     15
     16struct opal_dev;
     17
     18typedef int (sec_send_recv)(void *data, u16 spsp, u8 secp, void *buffer,
     19		size_t len, bool send);
     20
     21#ifdef CONFIG_BLK_SED_OPAL
     22void free_opal_dev(struct opal_dev *dev);
     23bool opal_unlock_from_suspend(struct opal_dev *dev);
     24struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv);
     25int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *ioctl_ptr);
     26
     27static inline bool is_sed_ioctl(unsigned int cmd)
     28{
     29	switch (cmd) {
     30	case IOC_OPAL_SAVE:
     31	case IOC_OPAL_LOCK_UNLOCK:
     32	case IOC_OPAL_TAKE_OWNERSHIP:
     33	case IOC_OPAL_ACTIVATE_LSP:
     34	case IOC_OPAL_SET_PW:
     35	case IOC_OPAL_ACTIVATE_USR:
     36	case IOC_OPAL_REVERT_TPR:
     37	case IOC_OPAL_LR_SETUP:
     38	case IOC_OPAL_ADD_USR_TO_LR:
     39	case IOC_OPAL_ENABLE_DISABLE_MBR:
     40	case IOC_OPAL_ERASE_LR:
     41	case IOC_OPAL_SECURE_ERASE_LR:
     42	case IOC_OPAL_PSID_REVERT_TPR:
     43	case IOC_OPAL_MBR_DONE:
     44	case IOC_OPAL_WRITE_SHADOW_MBR:
     45	case IOC_OPAL_GENERIC_TABLE_RW:
     46		return true;
     47	}
     48	return false;
     49}
     50#else
     51static inline void free_opal_dev(struct opal_dev *dev)
     52{
     53}
     54
     55static inline bool is_sed_ioctl(unsigned int cmd)
     56{
     57	return false;
     58}
     59
     60static inline int sed_ioctl(struct opal_dev *dev, unsigned int cmd,
     61			    void __user *ioctl_ptr)
     62{
     63	return 0;
     64}
     65static inline bool opal_unlock_from_suspend(struct opal_dev *dev)
     66{
     67	return false;
     68}
     69#define init_opal_dev(data, send_recv)		NULL
     70#endif /* CONFIG_BLK_SED_OPAL */
     71#endif /* LINUX_OPAL_H */