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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* Copyright (c) 2024-2025 Intel Corporation
*
* These are definitions for the mailbox command interface of CXL subsystem.
*/
#ifndef _UAPI_FWCTL_CXL_H_
#define _UAPI_FWCTL_CXL_H_
#include <linux/types.h>
#include <linux/stddef.h>
#include <cxl/features.h>
/**
* struct fwctl_rpc_cxl - ioctl(FWCTL_RPC) input for CXL
* @opcode: CXL mailbox command opcode
* @flags: Flags for the command (input).
* @op_size: Size of input payload.
* @reserved1: Reserved. Must be 0s.
* @get_sup_feats_in: Get Supported Features input
* @get_feat_in: Get Feature input
* @set_feat_in: Set Feature input
*/
struct fwctl_rpc_cxl {
__struct_group(fwctl_rpc_cxl_hdr, hdr, /* no attrs */,
__u32 opcode;
__u32 flags;
__u32 op_size;
__u32 reserved1;
);
union {
struct cxl_mbox_get_sup_feats_in get_sup_feats_in;
struct cxl_mbox_get_feat_in get_feat_in;
struct cxl_mbox_set_feat_in set_feat_in;
};
};
/**
* struct fwctl_rpc_cxl_out - ioctl(FWCTL_RPC) output for CXL
* @size: Size of the output payload
* @retval: Return value from device
* @get_sup_feats_out: Get Supported Features output
* @payload: raw byte stream of payload
*/
struct fwctl_rpc_cxl_out {
__struct_group(fwctl_rpc_cxl_out_hdr, hdr, /* no attrs */,
__u32 size;
__u32 retval;
);
union {
struct cxl_mbox_get_sup_feats_out get_sup_feats_out;
__DECLARE_FLEX_ARRAY(__u8, payload);
};
};
#endif
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