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Edit File : cxl.h \| Size : 3.84 KB
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note / / * 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 _MISC_CXL_H #define _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) / 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 / _MISC_CXL_H */ Back

Edit File : cxl.h | Size : 3.84 KB

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
 * 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 _MISC_CXL_H
#define _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)

/* 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 /* _MISC_CXL_H */

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