Quelle hfi1_user.h
Sprache: C
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
/*
*
* This file is provided under a dual BSD / GPLv2 license . When using or
* redistributing this file , you may do so under either license .
*
* GPL LICENSE SUMMARY
*
* Copyright ( c ) 2015 - 2020 Intel Corporation .
*
* This program is free software ; you can redistribute it and / or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation .
*
* This program is distributed in the hope that it will be useful , but
* WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* General Public License for more details .
*
* BSD LICENSE
*
* Copyright ( c ) 2015 Intel Corporation .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
*
* - Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
* - Redistributions in binary form must reproduce the above copyright
* notice , this list of conditions and the following disclaimer in
* the documentation and / or other materials provided with the
* distribution .
* - Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT , INDIRECT , INCIDENTAL ,
* SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES ( INCLUDING , BUT NOT
* LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ; LOSS OF USE ,
* DATA , OR PROFITS ; OR BUSINESS INTERRUPTION ) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY , WHETHER IN CONTRACT , STRICT LIABILITY , OR TORT
* ( INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE , EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE .
*
*/
/*
* This file contains defines , structures , etc . that are used
* to communicate between kernel and user code .
*/
#ifndef _LINUX__HFI1_USER_H
#define _LINUX__HFI1_USER_H
#include <linux/types.h>
#include <rdma/rdma_user_ioctl.h>
/*
* This version number is given to the driver by the user code during
* initialization in the spu_userversion field of hfi1_user_info , so
* the driver can check for compatibility with user code .
*
* The major version changes when data structures change in an incompatible
* way . The driver must be the same for initialization to succeed .
*/
#define HFI1_USER_SWMAJOR 6
/*
* Minor version differences are always compatible
* a within a major version , however if user software is larger
* than driver software , some new features and / or structure fields
* may not be implemented ; the user code must deal with this if it
* cares , or it must abort after initialization reports the difference .
*/
#define HFI1_USER_SWMINOR 3
/*
* We will encode the major / minor inside a single 32 bit version number .
*/
#define HFI1_SWMAJOR_SHIFT 16
/*
* Set of HW and driver capability / feature bits .
* These bit values are used to configure enabled / disabled HW and
* driver features . The same set of bits are communicated to user
* space .
*/
#define HFI1_CAP_DMA_RTAIL (1 UL << 0 ) /* Use DMA'ed RTail value */
#define HFI1_CAP_SDMA (1 UL << 1 ) /* Enable SDMA support */
#define HFI1_CAP_SDMA_AHG (1 UL << 2 ) /* Enable SDMA AHG support */
#define HFI1_CAP_EXTENDED_PSN (1 UL << 3 ) /* Enable Extended PSN support */
#define HFI1_CAP_HDRSUPP (1 UL << 4 ) /* Enable Header Suppression */
#define HFI1_CAP_TID_RDMA (1 UL << 5 ) /* Enable TID RDMA operations */
#define HFI1_CAP_USE_SDMA_HEAD (1 UL << 6 ) /* DMA Hdr Q tail vs. use CSR */
#define HFI1_CAP_MULTI_PKT_EGR (1 UL << 7 ) /* Enable multi-packet Egr buffs*/
#define HFI1_CAP_NODROP_RHQ_FULL (1 UL << 8 ) /* Don't drop on Hdr Q full */
#define HFI1_CAP_NODROP_EGR_FULL (1 UL << 9 ) /* Don't drop on EGR buffs full */
#define HFI1_CAP_TID_UNMAP (1 UL << 10 ) /* Disable Expected TID caching */
#define HFI1_CAP_PRINT_UNIMPL (1 UL << 11 ) /* Show for unimplemented feats */
#define HFI1_CAP_ALLOW_PERM_JKEY (1 UL << 12 ) /* Allow use of permissive JKEY */
#define HFI1_CAP_NO_INTEGRITY (1 UL << 13 ) /* Enable ctxt integrity checks */
#define HFI1_CAP_PKEY_CHECK (1 UL << 14 ) /* Enable ctxt PKey checking */
#define HFI1_CAP_STATIC_RATE_CTRL (1 UL << 15 ) /* Allow PBC.StaticRateControl */
#define HFI1_CAP_OPFN (1 UL << 16 ) /* Enable the OPFN protocol */
#define HFI1_CAP_SDMA_HEAD_CHECK (1 UL << 17 ) /* SDMA head checking */
#define HFI1_CAP_EARLY_CREDIT_RETURN (1 UL << 18 ) /* early credit return */
#define HFI1_CAP_AIP (1 UL << 19 ) /* Enable accelerated IP */
#define HFI1_RCVHDR_ENTSIZE_2 (1 UL << 0 )
#define HFI1_RCVHDR_ENTSIZE_16 (1 UL << 1 )
#define HFI1_RCVDHR_ENTSIZE_32 (1 UL << 2 )
#define _HFI1_EVENT_FROZEN_BIT 0
#define _HFI1_EVENT_LINKDOWN_BIT 1
#define _HFI1_EVENT_LID_CHANGE_BIT 2
#define _HFI1_EVENT_LMC_CHANGE_BIT 3
#define _HFI1_EVENT_SL2VL_CHANGE_BIT 4
#define _HFI1_EVENT_TID_MMU_NOTIFY_BIT 5
#define _HFI1_MAX_EVENT_BIT _HFI1_EVENT_TID_MMU_NOTIFY_BIT
#define HFI1_EVENT_FROZEN (1 UL << _HFI1_EVENT_FROZEN_BIT)
#define HFI1_EVENT_LINKDOWN (1 UL << _HFI1_EVENT_LINKDOWN_BIT)
#define HFI1_EVENT_LID_CHANGE (1 UL << _HFI1_EVENT_LID_CHANGE_BIT)
#define HFI1_EVENT_LMC_CHANGE (1 UL << _HFI1_EVENT_LMC_CHANGE_BIT)
#define HFI1_EVENT_SL2VL_CHANGE (1 UL << _HFI1_EVENT_SL2VL_CHANGE_BIT)
#define HFI1_EVENT_TID_MMU_NOTIFY (1 UL << _HFI1_EVENT_TID_MMU_NOTIFY_BIT)
/*
* These are the status bits readable ( in ASCII form , 64 bit value )
* from the " status " sysfs file . For binary compatibility , values
* must remain as is ; removed states can be reused for different
* purposes .
*/
#define HFI1_STATUS_INITTED 0 x1 /* basic initialization done */
/* Chip has been found and initialized */
#define HFI1_STATUS_CHIP_PRESENT 0 x20
/* IB link is at ACTIVE, usable for data traffic */
#define HFI1_STATUS_IB_READY 0 x40
/* link is configured, LID, MTU, etc. have been set */
#define HFI1_STATUS_IB_CONF 0 x80
/* A Fatal hardware error has occurred. */
#define HFI1_STATUS_HWERROR 0 x200
/*
* Number of supported shared contexts .
* This is the maximum number of software contexts that can share
* a hardware send / receive context .
*/
#define HFI1_MAX_SHARED_CTXTS 8
/*
* Poll types
*/
#define HFI1_POLL_TYPE_ANYRCV 0 x0
#define HFI1_POLL_TYPE_URGENT 0 x1
enum hfi1_sdma_comp_state {
FREE = 0 ,
QUEUED,
COMPLETE,
ERROR
};
/*
* SDMA completion ring entry
*/
struct hfi1_sdma_comp_entry {
__u32 status;
__u32 errcode;
};
/*
* Device status and notifications from driver to user - space .
*/
struct hfi1_status {
__aligned_u64 dev; /* device/hw status bits */
__aligned_u64 port; /* port state and status bits */
char freezemsg[];
};
enum sdma_req_opcode {
EXPECTED = 0 ,
EAGER
};
#define HFI1_SDMA_REQ_VERSION_MASK 0 xF
#define HFI1_SDMA_REQ_VERSION_SHIFT 0 x0
#define HFI1_SDMA_REQ_OPCODE_MASK 0 xF
#define HFI1_SDMA_REQ_OPCODE_SHIFT 0 x4
#define HFI1_SDMA_REQ_IOVCNT_MASK 0 xFF
#define HFI1_SDMA_REQ_IOVCNT_SHIFT 0 x8
struct sdma_req_info {
/*
* bits 0 - 3 - version ( currently unused )
* bits 4 - 7 - opcode ( enum sdma_req_opcode )
* bits 8 - 15 - io vector count
*/
__u16 ctrl;
/*
* Number of fragments contained in this request .
* User - space has already computed how many
* fragment - sized packet the user buffer will be
* split into .
*/
__u16 npkts;
/*
* Size of each fragment the user buffer will be
* split into .
*/
__u16 fragsize;
/*
* Index of the slot in the SDMA completion ring
* this request should be using . User - space is
* in charge of managing its own ring .
*/
__u16 comp_idx;
} __attribute__((__packed__));
/*
* SW KDETH header .
* swdata is SW defined portion .
*/
struct hfi1_kdeth_header {
__le32 ver_tid_offset;
__le16 jkey;
__le16 hcrc;
__le32 swdata[7 ];
} __attribute__((__packed__));
/*
* Structure describing the headers that User space uses . The
* structure above is a subset of this one .
*/
struct hfi1_pkt_header {
__le16 pbc[4 ];
__be16 lrh[4 ];
__be32 bth[3 ];
struct hfi1_kdeth_header kdeth;
} __attribute__((__packed__));
/*
* The list of usermode accessible registers .
*/
enum hfi1_ureg {
/* (RO) DMA RcvHdr to be used next. */
ur_rcvhdrtail = 0 ,
/* (RW) RcvHdr entry to be processed next by host. */
ur_rcvhdrhead = 1 ,
/* (RO) Index of next Eager index to use. */
ur_rcvegrindextail = 2 ,
/* (RW) Eager TID to be processed next */
ur_rcvegrindexhead = 3 ,
/* (RO) Receive Eager Offset Tail */
ur_rcvegroffsettail = 4 ,
/* For internal use only; max register number. */
ur_maxreg,
/* (RW) Receive TID flow table */
ur_rcvtidflowtable = 256
};
#endif /* _LINIUX__HFI1_USER_H */
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(vorverarbeitet am 2026-09-28)
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2026-10-10
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