69 lines · c
1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * AMD Platform Security Processor (PSP) interface driver4 *5 * Copyright (C) 2017-2019 Advanced Micro Devices, Inc.6 *7 * Author: Brijesh Singh <brijesh.singh@amd.com>8 */9 10#ifndef __SEV_DEV_H__11#define __SEV_DEV_H__12 13#include <linux/device.h>14#include <linux/spinlock.h>15#include <linux/mutex.h>16#include <linux/list.h>17#include <linux/wait.h>18#include <linux/dmapool.h>19#include <linux/hw_random.h>20#include <linux/bitops.h>21#include <linux/interrupt.h>22#include <linux/irqreturn.h>23#include <linux/dmaengine.h>24#include <linux/psp-sev.h>25#include <linux/miscdevice.h>26#include <linux/capability.h>27 28#define SEV_CMDRESP_CMD GENMASK(26, 16)29#define SEV_CMD_COMPLETE BIT(1)30#define SEV_CMDRESP_IOC BIT(0)31 32struct sev_misc_dev {33 struct kref refcount;34 struct miscdevice misc;35};36 37struct sev_device {38 struct device *dev;39 struct psp_device *psp;40 41 void __iomem *io_regs;42 43 struct sev_vdata *vdata;44 45 int state;46 unsigned int int_rcvd;47 wait_queue_head_t int_queue;48 struct sev_misc_dev *misc;49 50 u8 api_major;51 u8 api_minor;52 u8 build;53 54 void *cmd_buf;55 void *cmd_buf_backup;56 bool cmd_buf_active;57 bool cmd_buf_backup_active;58 59 bool snp_initialized;60};61 62int sev_dev_init(struct psp_device *psp);63void sev_dev_destroy(struct psp_device *psp);64 65void sev_pci_init(void);66void sev_pci_exit(void);67 68#endif /* __SEV_DEV_H */69