xref: /openbmc/linux/include/linux/sed-opal.h (revision 4bb1eb3c)
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 
16 struct opal_dev;
17 
18 typedef 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
22 void free_opal_dev(struct opal_dev *dev);
23 bool opal_unlock_from_suspend(struct opal_dev *dev);
24 struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv);
25 int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *ioctl_ptr);
26 
27 static 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
51 static inline void free_opal_dev(struct opal_dev *dev)
52 {
53 }
54 
55 static inline bool is_sed_ioctl(unsigned int cmd)
56 {
57 	return false;
58 }
59 
60 static inline int sed_ioctl(struct opal_dev *dev, unsigned int cmd,
61 			    void __user *ioctl_ptr)
62 {
63 	return 0;
64 }
65 static 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 */
72