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hfi1_user.h
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/* 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 32bit 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 (1UL << 0) /* Use DMA'ed RTail value */ #define HFI1_CAP_SDMA (1UL << 1) /* Enable SDMA support */ #define HFI1_CAP_SDMA_AHG (1UL << 2) /* Enable SDMA AHG support */ #define HFI1_CAP_EXTENDED_PSN (1UL << 3) /* Enable Extended PSN support */ #define HFI1_CAP_HDRSUPP (1UL << 4) /* Enable Header Suppression */ #define HFI1_CAP_TID_RDMA (1UL << 5) /* Enable TID RDMA operations */ #define HFI1_CAP_USE_SDMA_HEAD (1UL << 6) /* DMA Hdr Q tail vs. use CSR */ #define HFI1_CAP_MULTI_PKT_EGR (1UL << 7) /* Enable multi-packet Egr buffs*/ #define HFI1_CAP_NODROP_RHQ_FULL (1UL << 8) /* Don't drop on Hdr Q full */ #define HFI1_CAP_NODROP_EGR_FULL (1UL << 9) /* Don't drop on EGR buffs full */ #define HFI1_CAP_TID_UNMAP (1UL << 10) /* Disable Expected TID caching */ #define HFI1_CAP_PRINT_UNIMPL (1UL << 11) /* Show for unimplemented feats */ #define HFI1_CAP_ALLOW_PERM_JKEY (1UL << 12) /* Allow use of permissive JKEY */ #define HFI1_CAP_NO_INTEGRITY (1UL << 13) /* Enable ctxt integrity checks */ #define HFI1_CAP_PKEY_CHECK (1UL << 14) /* Enable ctxt PKey checking */ #define HFI1_CAP_STATIC_RATE_CTRL (1UL << 15) /* Allow PBC.StaticRateControl */ #define HFI1_CAP_OPFN (1UL << 16) /* Enable the OPFN protocol */ #define HFI1_CAP_SDMA_HEAD_CHECK (1UL << 17) /* SDMA head checking */ #define HFI1_CAP_EARLY_CREDIT_RETURN (1UL << 18) /* early credit return */ #define HFI1_CAP_AIP (1UL << 19) /* Enable accelerated IP */ #define HFI1_RCVHDR_ENTSIZE_2 (1UL << 0) #define HFI1_RCVHDR_ENTSIZE_16 (1UL << 1) #define HFI1_RCVDHR_ENTSIZE_32 (1UL << 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 (1UL << _HFI1_EVENT_FROZEN_BIT) #define HFI1_EVENT_LINKDOWN (1UL << _HFI1_EVENT_LINKDOWN_BIT) #define HFI1_EVENT_LID_CHANGE (1UL << _HFI1_EVENT_LID_CHANGE_BIT) #define HFI1_EVENT_LMC_CHANGE (1UL << _HFI1_EVENT_LMC_CHANGE_BIT) #define HFI1_EVENT_SL2VL_CHANGE (1UL << _HFI1_EVENT_SL2VL_CHANGE_BIT) #define HFI1_EVENT_TID_MMU_NOTIFY (1UL << _HFI1_EVENT_TID_MMU_NOTIFY_BIT) /* * These are the status bits readable (in ASCII form, 64bit 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 0x1 /* basic initialization done */ /* Chip has been found and initialized */ #define HFI1_STATUS_CHIP_PRESENT 0x20 /* IB link is at ACTIVE, usable for data traffic */ #define HFI1_STATUS_IB_READY 0x40 /* link is configured, LID, MTU, etc. have been set */ #define HFI1_STATUS_IB_CONF 0x80 /* A Fatal hardware error has occurred. */ #define HFI1_STATUS_HWERROR 0x200 /* * 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 0x0 #define HFI1_POLL_TYPE_URGENT 0x1 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 0xF #define HFI1_SDMA_REQ_VERSION_SHIFT 0x0 #define HFI1_SDMA_REQ_OPCODE_MASK 0xF #define HFI1_SDMA_REQ_OPCODE_SHIFT 0x4 #define HFI1_SDMA_REQ_IOVCNT_MASK 0xFF #define HFI1_SDMA_REQ_IOVCNT_SHIFT 0x8 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 */