mirror of
https://github.com/torvalds/linux.git
synced 2024-11-29 15:41:36 +00:00
b1db551324
The POWER9 core supports a new feature: ASB_Notify which requires the support of the Special Purpose Register: TIDR. The ASB_Notify command, generated by the AFU, will attempt to wake-up the host thread identified by the particular LPID:PID:TID. This patch assign a unique TIDR (thread id) for the current thread which will be used in the process element entry. Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com> Reviewed-by: Philippe Bergheaud <felix@linux.vnet.ibm.com> Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Reviewed-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com> Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
/* 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 _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)
|
|
|
|
|
|
/* 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 */
|