cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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virtio_i2c.h (1201B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later WITH Linux-syscall-note */
      2/*
      3 * Definitions for virtio I2C Adpter
      4 *
      5 * Copyright (c) 2021 Intel Corporation. All rights reserved.
      6 */
      7
      8#ifndef _UAPI_LINUX_VIRTIO_I2C_H
      9#define _UAPI_LINUX_VIRTIO_I2C_H
     10
     11#include <linux/const.h>
     12#include <linux/types.h>
     13
     14/* Virtio I2C Feature bits */
     15#define VIRTIO_I2C_F_ZERO_LENGTH_REQUEST	0
     16
     17/* The bit 0 of the @virtio_i2c_out_hdr.@flags, used to group the requests */
     18#define VIRTIO_I2C_FLAGS_FAIL_NEXT	_BITUL(0)
     19
     20/* The bit 1 of the @virtio_i2c_out_hdr.@flags, used to mark a buffer as read */
     21#define VIRTIO_I2C_FLAGS_M_RD		_BITUL(1)
     22
     23/**
     24 * struct virtio_i2c_out_hdr - the virtio I2C message OUT header
     25 * @addr: the controlled device address
     26 * @padding: used to pad to full dword
     27 * @flags: used for feature extensibility
     28 */
     29struct virtio_i2c_out_hdr {
     30	__le16 addr;
     31	__le16 padding;
     32	__le32 flags;
     33};
     34
     35/**
     36 * struct virtio_i2c_in_hdr - the virtio I2C message IN header
     37 * @status: the processing result from the backend
     38 */
     39struct virtio_i2c_in_hdr {
     40	__u8 status;
     41};
     42
     43/* The final status written by the device */
     44#define VIRTIO_I2C_MSG_OK	0
     45#define VIRTIO_I2C_MSG_ERR	1
     46
     47#endif /* _UAPI_LINUX_VIRTIO_I2C_H */