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d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
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2 | /* |
3 | * AMD Platform Security Processor (PSP) interface driver | |
4 | * | |
fa5cd1c7 | 5 | * Copyright (C) 2017-2018 Advanced Micro Devices, Inc. |
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6 | * |
7 | * Author: Brijesh Singh <brijesh.singh@amd.com> | |
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8 | */ |
9 | ||
10 | #ifndef __PSP_DEV_H__ | |
11 | #define __PSP_DEV_H__ | |
12 | ||
13 | #include <linux/device.h> | |
14 | #include <linux/pci.h> | |
15 | #include <linux/spinlock.h> | |
16 | #include <linux/mutex.h> | |
17 | #include <linux/list.h> | |
18 | #include <linux/wait.h> | |
19 | #include <linux/dmapool.h> | |
20 | #include <linux/hw_random.h> | |
21 | #include <linux/bitops.h> | |
22 | #include <linux/interrupt.h> | |
23 | #include <linux/irqreturn.h> | |
24 | #include <linux/dmaengine.h> | |
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25 | #include <linux/psp-sev.h> |
26 | #include <linux/miscdevice.h> | |
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27 | |
28 | #include "sp-dev.h" | |
29 | ||
03af9124 | 30 | #define PSP_CMD_COMPLETE BIT(1) |
200664d5 | 31 | |
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32 | #define PSP_CMDRESP_CMD_SHIFT 16 |
33 | #define PSP_CMDRESP_IOC BIT(0) | |
34 | #define PSP_CMDRESP_RESP BIT(31) | |
35 | #define PSP_CMDRESP_ERR_MASK 0xffff | |
36 | ||
37 | #define MAX_PSP_NAME_LEN 16 | |
38 | ||
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39 | struct sev_misc_dev { |
40 | struct kref refcount; | |
41 | struct miscdevice misc; | |
42 | }; | |
43 | ||
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44 | struct psp_device { |
45 | struct list_head entry; | |
46 | ||
47 | struct psp_vdata *vdata; | |
48 | char name[MAX_PSP_NAME_LEN]; | |
49 | ||
50 | struct device *dev; | |
51 | struct sp_device *sp; | |
52 | ||
53 | void __iomem *io_regs; | |
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54 | |
55 | int sev_state; | |
56 | unsigned int sev_int_rcvd; | |
57 | wait_queue_head_t sev_int_queue; | |
58 | struct sev_misc_dev *sev_misc; | |
59 | struct sev_user_data_status status_cmd_buf; | |
60 | struct sev_data_init init_cmd_buf; | |
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61 | |
62 | u8 api_major; | |
63 | u8 api_minor; | |
64 | u8 build; | |
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65 | }; |
66 | ||
67 | #endif /* __PSP_DEV_H */ |