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