/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */


#ifndef _UAPI_MISC_CXL_H
#define _UAPI_MISC_CXL_H

#include <linux/types.h>
#include <linux/ioctl.h>


struct cxl_ioctl_start_work {
	__u64 flags;
	__u64 work_element_descriptor;
	__u64 amr;
	__s16 num_interrupts;
	__u16 tid;
	__s32 reserved1;
	__u64 reserved2;
	__u64 reserved3;
	__u64 reserved4;
	__u64 reserved5;
};

#define CXL_START_WORK_AMR		0x0000000000000001ULL
#define CXL_START_WORK_NUM_IRQS		0x0000000000000002ULL
#define CXL_START_WORK_ERR_FF		0x0000000000000004ULL
#define CXL_START_WORK_TID		0x0000000000000008ULL
#define CXL_START_WORK_ALL		(CXL_START_WORK_AMR |\
					 CXL_START_WORK_NUM_IRQS |\
					 CXL_START_WORK_ERR_FF |\
					 CXL_START_WORK_TID)



#define CXL_MODE_DEDICATED   0x1
#define CXL_MODE_DIRECTED    0x2


#define CXL_AFUID_FLAG_SLAVE    0x1  

struct cxl_afu_id {
	__u64 flags;     
	__u32 card_id;
	__u32 afu_offset;
	__u32 afu_mode;  
	__u32 reserved1;
	__u64 reserved2;
	__u64 reserved3;
	__u64 reserved4;
	__u64 reserved5;
	__u64 reserved6;
};


#define CXL_AI_NEED_HEADER	0x0000000000000001ULL
#define CXL_AI_ALL		CXL_AI_NEED_HEADER

#define CXL_AI_HEADER_SIZE 128
#define CXL_AI_BUFFER_SIZE 4096
#define CXL_AI_MAX_ENTRIES 256
#define CXL_AI_MAX_CHUNK_SIZE (CXL_AI_BUFFER_SIZE * CXL_AI_MAX_ENTRIES)

struct cxl_adapter_image {
	__u64 flags;
	__u64 data;
	__u64 len_data;
	__u64 len_image;
	__u64 reserved1;
	__u64 reserved2;
	__u64 reserved3;
	__u64 reserved4;
};


#define CXL_MAGIC 0xCA

#define CXL_IOCTL_START_WORK		_IOW(CXL_MAGIC, 0x00, struct cxl_ioctl_start_work)
#define CXL_IOCTL_GET_PROCESS_ELEMENT	_IOR(CXL_MAGIC, 0x01, __u32)
#define CXL_IOCTL_GET_AFU_ID            _IOR(CXL_MAGIC, 0x02, struct cxl_afu_id)

#define CXL_IOCTL_DOWNLOAD_IMAGE        _IOW(CXL_MAGIC, 0x0A, struct cxl_adapter_image)
#define CXL_IOCTL_VALIDATE_IMAGE        _IOW(CXL_MAGIC, 0x0B, struct cxl_adapter_image)

#define CXL_READ_MIN_SIZE 0x1000 


enum cxl_event_type {
	CXL_EVENT_RESERVED      = 0,
	CXL_EVENT_AFU_INTERRUPT = 1,
	CXL_EVENT_DATA_STORAGE  = 2,
	CXL_EVENT_AFU_ERROR     = 3,
	CXL_EVENT_AFU_DRIVER    = 4,
};

struct cxl_event_header {
	__u16 type;
	__u16 size;
	__u16 process_element;
	__u16 reserved1;
};

struct cxl_event_afu_interrupt {
	__u16 flags;
	__u16 irq; 
	__u32 reserved1;
};

struct cxl_event_data_storage {
	__u16 flags;
	__u16 reserved1;
	__u32 reserved2;
	__u64 addr;
	__u64 dsisr;
	__u64 reserved3;
};

struct cxl_event_afu_error {
	__u16 flags;
	__u16 reserved1;
	__u32 reserved2;
	__u64 error;
};

struct cxl_event_afu_driver_reserved {
	
	__u32 data_size;
	__u8 data[];
};

struct cxl_event {
	struct cxl_event_header header;
	union {
		struct cxl_event_afu_interrupt irq;
		struct cxl_event_data_storage fault;
		struct cxl_event_afu_error afu_error;
		struct cxl_event_afu_driver_reserved afu_driver_event;
	};
};

#endif 
