xref: /openbmc/linux/drivers/crypto/ccp/psp-dev.h (revision c04cf9e1)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * AMD Platform Security Processor (PSP) interface driver
4  *
5  * Copyright (C) 2017-2019 Advanced Micro Devices, Inc.
6  *
7  * Author: Brijesh Singh <brijesh.singh@amd.com>
8  */
9 
10 #ifndef __PSP_DEV_H__
11 #define __PSP_DEV_H__
12 
13 #include <linux/device.h>
14 #include <linux/list.h>
15 #include <linux/bits.h>
16 #include <linux/interrupt.h>
17 
18 #include "sp-dev.h"
19 
20 #define MAX_PSP_NAME_LEN		16
21 
22 extern struct psp_device *psp_master;
23 
24 typedef void (*psp_irq_handler_t)(int, void *, unsigned int);
25 
26 struct psp_device {
27 	struct list_head entry;
28 
29 	struct psp_vdata *vdata;
30 	char name[MAX_PSP_NAME_LEN];
31 
32 	struct device *dev;
33 	struct sp_device *sp;
34 
35 	void __iomem *io_regs;
36 
37 	psp_irq_handler_t sev_irq_handler;
38 	void *sev_irq_data;
39 
40 	void *sev_data;
41 	void *tee_data;
42 	void *platform_access_data;
43 	void *dbc_data;
44 
45 	unsigned int capability;
46 };
47 
48 void psp_set_sev_irq_handler(struct psp_device *psp, psp_irq_handler_t handler,
49 			     void *data);
50 void psp_clear_sev_irq_handler(struct psp_device *psp);
51 
52 struct psp_device *psp_get_master_device(void);
53 
54 #define PSP_CAPABILITY_SEV			BIT(0)
55 #define PSP_CAPABILITY_TEE			BIT(1)
56 #define PSP_CAPABILITY_PSP_SECURITY_REPORTING	BIT(7)
57 
58 #define PSP_CAPABILITY_PSP_SECURITY_OFFSET	8
59 /*
60  * The PSP doesn't directly store these bits in the capability register
61  * but instead copies them from the results of query command.
62  *
63  * The offsets from the query command are below, and shifted when used.
64  */
65 #define PSP_SECURITY_FUSED_PART			BIT(0)
66 #define PSP_SECURITY_DEBUG_LOCK_ON		BIT(2)
67 #define PSP_SECURITY_TSME_STATUS		BIT(5)
68 #define PSP_SECURITY_ANTI_ROLLBACK_STATUS	BIT(7)
69 #define PSP_SECURITY_RPMC_PRODUCTION_ENABLED	BIT(8)
70 #define PSP_SECURITY_RPMC_SPIROM_AVAILABLE	BIT(9)
71 #define PSP_SECURITY_HSP_TPM_AVAILABLE		BIT(10)
72 #define PSP_SECURITY_ROM_ARMOR_ENFORCED		BIT(11)
73 
74 #endif /* __PSP_DEV_H */
75