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 
is_sed_ioctl(unsigned int cmd)28 static inline bool is_sed_ioctl(unsigned int cmd)
29 {
30 	switch (cmd) {
31 	case IOC_OPAL_SAVE:
32 	case IOC_OPAL_LOCK_UNLOCK:
33 	case IOC_OPAL_TAKE_OWNERSHIP:
34 	case IOC_OPAL_ACTIVATE_LSP:
35 	case IOC_OPAL_SET_PW:
36 	case IOC_OPAL_ACTIVATE_USR:
37 	case IOC_OPAL_REVERT_TPR:
38 	case IOC_OPAL_LR_SETUP:
39 	case IOC_OPAL_ADD_USR_TO_LR:
40 	case IOC_OPAL_ENABLE_DISABLE_MBR:
41 	case IOC_OPAL_ERASE_LR:
42 	case IOC_OPAL_SECURE_ERASE_LR:
43 	case IOC_OPAL_PSID_REVERT_TPR:
44 	case IOC_OPAL_MBR_DONE:
45 	case IOC_OPAL_WRITE_SHADOW_MBR:
46 	case IOC_OPAL_GENERIC_TABLE_RW:
47 	case IOC_OPAL_GET_STATUS:
48 		return true;
49 	}
50 	return false;
51 }
52 #else
free_opal_dev(struct opal_dev * dev)53 static inline void free_opal_dev(struct opal_dev *dev)
54 {
55 }
56 
is_sed_ioctl(unsigned int cmd)57 static inline bool is_sed_ioctl(unsigned int cmd)
58 {
59 	return false;
60 }
61 
sed_ioctl(struct opal_dev * dev,unsigned int cmd,void __user * ioctl_ptr)62 static inline int sed_ioctl(struct opal_dev *dev, unsigned int cmd,
63 			    void __user *ioctl_ptr)
64 {
65 	return 0;
66 }
opal_unlock_from_suspend(struct opal_dev * dev)67 static inline bool opal_unlock_from_suspend(struct opal_dev *dev)
68 {
69 	return false;
70 }
71 #define init_opal_dev(data, send_recv)		NULL
72 #endif /* CONFIG_BLK_SED_OPAL */
73 #endif /* LINUX_OPAL_H */
74