1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * AMD Platform Security Processor (PSP) interface driver
5 * Copyright (C) 2017-2018 Advanced Micro Devices, Inc.
7 * Author: Brijesh Singh <brijesh.singh@amd.com>
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>
25 #include <linux/psp-sev.h>
26 #include <linux/miscdevice.h>
30 #define PSP_CMD_COMPLETE BIT(1)
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
37 #define MAX_PSP_NAME_LEN 16
41 struct miscdevice misc;
45 struct list_head entry;
47 struct psp_vdata *vdata;
48 char name[MAX_PSP_NAME_LEN];
53 void __iomem *io_regs;
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;
67 #endif /* __PSP_DEV_H */