LXR linux/drivers/crypto/ccp/sev-dev.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * AMD Platform Security Processor (PSP) interface driver
   4 *
   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_CMD_COMPLETE                BIT(1)
  29#define SEV_CMDRESP_CMD_SHIFT           16
  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};
  56
  57int sev_dev_init(struct psp_device *psp);
  58void sev_dev_destroy(struct psp_device *psp);
  59
  60void sev_pci_init(void);
  61void sev_pci_exit(void);
  62
  63#endif /* __SEV_DEV_H */
  64