/* * Copyright 2014 IBM Corp. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #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;	__s16 reserved1;	__s32 reserved2;	__u64 reserved3;	__u64 reserved4;	__u64 reserved5;	__u64 reserved6;}; #define CXL_START_WORK_AMR		0x0000000000000001ULL#define CXL_START_WORK_NUM_IRQS		0x0000000000000002ULL#define CXL_START_WORK_ERR_FF		0x0000000000000004ULL#define CXL_START_WORK_ALL		(CXL_START_WORK_AMR |\					 CXL_START_WORK_NUM_IRQS |\					 CXL_START_WORK_ERR_FF)  /* Possible modes that an afu can be in */#define CXL_MODE_DEDICATED   0x1#define CXL_MODE_DIRECTED    0x2 /* possible flags for the cxl_afu_id flags field */#define CXL_AFUID_FLAG_SLAVE    0x1  /* In directed-mode afu is in slave mode */ struct cxl_afu_id {	__u64 flags;     /* One of CXL_AFUID_FLAG_X */	__u32 card_id;	__u32 afu_offset;	__u32 afu_mode;  /* one of the CXL_MODE_X */	__u32 reserved1;	__u64 reserved2;	__u64 reserved3;	__u64 reserved4;	__u64 reserved5;	__u64 reserved6;}; /* base adapter image header is included in the image */#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;}; /* ioctl numbers */#define CXL_MAGIC 0xCA/* AFU devices */#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)/* adapter devices */#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 /* 4K */ /* Events from read() */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; /* Raised AFU interrupt number */	__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 {	/*	 * Defines the buffer passed to the cxl driver by the AFU driver.	 *	 * This is not ABI since the event header.size passed to the user for	 * existing events is set in the read call to sizeof(cxl_event_header)	 * + sizeof(whatever event is being dispatched) and the user is already	 * required to use a 4K buffer on the read call.	 *	 * Of course the contents will be ABI, but that's up the AFU driver.	 */	__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 /* _UAPI_MISC_CXL_H */