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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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 * AMD Platform Security Processor (PSP) interface driver
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 *
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 * Copyright (C) 2017-2019 Advanced Micro Devices, Inc.
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 *
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 * Author: Brijesh Singh <[email protected]>
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 */
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#ifndef __SEV_DEV_H__
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#define __SEV_DEV_H__
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#include <linux/device.h>
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include <linux/list.h>
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#include <linux/wait.h>
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#include <linux/dmapool.h>
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#include <linux/hw_random.h>
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#include <linux/bitops.h>
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#include <linux/interrupt.h>
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#include <linux/irqreturn.h>
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#include <linux/dmaengine.h>
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#include <linux/psp-sev.h>
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#include <linux/miscdevice.h>
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#include <linux/capability.h>
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#define SEV_CMDRESP_CMD			GENMASK(26, 16)
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#define SEV_CMD_COMPLETE		BIT(1)
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#define SEV_CMDRESP_IOC			BIT(0)
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struct sev_misc_dev {
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	struct kref refcount;
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	struct miscdevice misc;
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};
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struct sev_device {
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	struct device *dev;
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	struct psp_device *psp;
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	void __iomem *io_regs;
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	struct sev_vdata *vdata;
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	unsigned int int_rcvd;
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	wait_queue_head_t int_queue;
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	struct sev_misc_dev *misc;
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	u8 api_major;
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	u8 api_minor;
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	u8 build;
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	void *cmd_buf;
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	void *cmd_buf_backup;
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	bool cmd_buf_active;
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	bool cmd_buf_backup_active;
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	bool snp_initialized;
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	struct sev_user_data_status sev_plat_status;
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	struct sev_user_data_snp_status snp_plat_status;
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	struct snp_feature_info snp_feat_info_0;
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};
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int sev_dev_init(struct psp_device *psp);
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void sev_dev_destroy(struct psp_device *psp);
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void sev_pci_init(void);
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void sev_pci_exit(void);
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struct page *snp_alloc_hv_fixed_pages(unsigned int num_2mb_pages);
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void snp_free_hv_fixed_pages(struct page *page);
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#endif /* __SEV_DEV_H */
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