1150 lines
33 KiB
C
1150 lines
33 KiB
C
/*
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2015 Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* BSD LICENSE
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*
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* Copyright(c) 2015 Intel Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* - Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef HFI1_VERBS_H
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#define HFI1_VERBS_H
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#include <linux/types.h>
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#include <linux/seqlock.h>
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#include <linux/kernel.h>
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#include <linux/interrupt.h>
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#include <linux/kref.h>
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#include <linux/workqueue.h>
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#include <linux/kthread.h>
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#include <linux/completion.h>
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#include <rdma/ib_pack.h>
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#include <rdma/ib_user_verbs.h>
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#include <rdma/ib_mad.h>
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struct hfi1_ctxtdata;
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struct hfi1_pportdata;
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struct hfi1_devdata;
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struct hfi1_packet;
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#include "iowait.h"
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#define HFI1_MAX_RDMA_ATOMIC 16
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#define HFI1_GUIDS_PER_PORT 5
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/*
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* Increment this value if any changes that break userspace ABI
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* compatibility are made.
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*/
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#define HFI1_UVERBS_ABI_VERSION 2
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/*
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* Define an ib_cq_notify value that is not valid so we know when CQ
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* notifications are armed.
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*/
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#define IB_CQ_NONE (IB_CQ_NEXT_COMP + 1)
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#define IB_SEQ_NAK (3 << 29)
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/* AETH NAK opcode values */
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#define IB_RNR_NAK 0x20
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#define IB_NAK_PSN_ERROR 0x60
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#define IB_NAK_INVALID_REQUEST 0x61
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#define IB_NAK_REMOTE_ACCESS_ERROR 0x62
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#define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
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#define IB_NAK_INVALID_RD_REQUEST 0x64
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/* Flags for checking QP state (see ib_hfi1_state_ops[]) */
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#define HFI1_POST_SEND_OK 0x01
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#define HFI1_POST_RECV_OK 0x02
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#define HFI1_PROCESS_RECV_OK 0x04
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#define HFI1_PROCESS_SEND_OK 0x08
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#define HFI1_PROCESS_NEXT_SEND_OK 0x10
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#define HFI1_FLUSH_SEND 0x20
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#define HFI1_FLUSH_RECV 0x40
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#define HFI1_PROCESS_OR_FLUSH_SEND \
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(HFI1_PROCESS_SEND_OK | HFI1_FLUSH_SEND)
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/* IB Performance Manager status values */
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#define IB_PMA_SAMPLE_STATUS_DONE 0x00
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#define IB_PMA_SAMPLE_STATUS_STARTED 0x01
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#define IB_PMA_SAMPLE_STATUS_RUNNING 0x02
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/* Mandatory IB performance counter select values. */
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#define IB_PMA_PORT_XMIT_DATA cpu_to_be16(0x0001)
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#define IB_PMA_PORT_RCV_DATA cpu_to_be16(0x0002)
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#define IB_PMA_PORT_XMIT_PKTS cpu_to_be16(0x0003)
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#define IB_PMA_PORT_RCV_PKTS cpu_to_be16(0x0004)
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#define IB_PMA_PORT_XMIT_WAIT cpu_to_be16(0x0005)
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#define HFI1_VENDOR_IPG cpu_to_be16(0xFFA0)
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#define IB_BTH_REQ_ACK (1 << 31)
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#define IB_BTH_SOLICITED (1 << 23)
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#define IB_BTH_MIG_REQ (1 << 22)
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#define IB_GRH_VERSION 6
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#define IB_GRH_VERSION_MASK 0xF
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#define IB_GRH_VERSION_SHIFT 28
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#define IB_GRH_TCLASS_MASK 0xFF
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#define IB_GRH_TCLASS_SHIFT 20
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#define IB_GRH_FLOW_MASK 0xFFFFF
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#define IB_GRH_FLOW_SHIFT 0
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#define IB_GRH_NEXT_HDR 0x1B
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#define IB_DEFAULT_GID_PREFIX cpu_to_be64(0xfe80000000000000ULL)
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/* flags passed by hfi1_ib_rcv() */
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enum {
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HFI1_HAS_GRH = (1 << 0),
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};
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struct ib_reth {
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__be64 vaddr;
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__be32 rkey;
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__be32 length;
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} __packed;
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struct ib_atomic_eth {
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__be32 vaddr[2]; /* unaligned so access as 2 32-bit words */
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__be32 rkey;
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__be64 swap_data;
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__be64 compare_data;
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} __packed;
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union ib_ehdrs {
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struct {
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__be32 deth[2];
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__be32 imm_data;
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} ud;
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struct {
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struct ib_reth reth;
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__be32 imm_data;
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} rc;
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struct {
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__be32 aeth;
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__be32 atomic_ack_eth[2];
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} at;
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__be32 imm_data;
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__be32 aeth;
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struct ib_atomic_eth atomic_eth;
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} __packed;
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struct hfi1_other_headers {
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__be32 bth[3];
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union ib_ehdrs u;
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} __packed;
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/*
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* Note that UD packets with a GRH header are 8+40+12+8 = 68 bytes
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* long (72 w/ imm_data). Only the first 56 bytes of the IB header
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* will be in the eager header buffer. The remaining 12 or 16 bytes
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* are in the data buffer.
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*/
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struct hfi1_ib_header {
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__be16 lrh[4];
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union {
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struct {
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struct ib_grh grh;
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struct hfi1_other_headers oth;
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} l;
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struct hfi1_other_headers oth;
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} u;
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} __packed;
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struct ahg_ib_header {
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struct sdma_engine *sde;
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u32 ahgdesc[2];
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u16 tx_flags;
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u8 ahgcount;
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u8 ahgidx;
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struct hfi1_ib_header ibh;
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};
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struct hfi1_pio_header {
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__le64 pbc;
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struct hfi1_ib_header hdr;
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} __packed;
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/*
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* used for force cacheline alignment for AHG
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*/
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struct tx_pio_header {
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struct hfi1_pio_header phdr;
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} ____cacheline_aligned;
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/*
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* There is one struct hfi1_mcast for each multicast GID.
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* All attached QPs are then stored as a list of
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* struct hfi1_mcast_qp.
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*/
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struct hfi1_mcast_qp {
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struct list_head list;
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struct hfi1_qp *qp;
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};
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struct hfi1_mcast {
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struct rb_node rb_node;
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union ib_gid mgid;
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struct list_head qp_list;
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wait_queue_head_t wait;
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atomic_t refcount;
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int n_attached;
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};
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/* Protection domain */
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struct hfi1_pd {
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struct ib_pd ibpd;
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int user; /* non-zero if created from user space */
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};
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/* Address Handle */
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struct hfi1_ah {
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struct ib_ah ibah;
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struct ib_ah_attr attr;
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atomic_t refcount;
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};
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/*
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* This structure is used by hfi1_mmap() to validate an offset
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* when an mmap() request is made. The vm_area_struct then uses
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* this as its vm_private_data.
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*/
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struct hfi1_mmap_info {
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struct list_head pending_mmaps;
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struct ib_ucontext *context;
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void *obj;
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__u64 offset;
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struct kref ref;
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unsigned size;
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};
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/*
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* This structure is used to contain the head pointer, tail pointer,
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* and completion queue entries as a single memory allocation so
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* it can be mmap'ed into user space.
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*/
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struct hfi1_cq_wc {
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u32 head; /* index of next entry to fill */
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u32 tail; /* index of next ib_poll_cq() entry */
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union {
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/* these are actually size ibcq.cqe + 1 */
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struct ib_uverbs_wc uqueue[0];
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struct ib_wc kqueue[0];
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};
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};
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/*
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* The completion queue structure.
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*/
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struct hfi1_cq {
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struct ib_cq ibcq;
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struct kthread_work comptask;
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struct hfi1_devdata *dd;
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spinlock_t lock; /* protect changes in this struct */
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u8 notify;
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u8 triggered;
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struct hfi1_cq_wc *queue;
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struct hfi1_mmap_info *ip;
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};
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/*
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* A segment is a linear region of low physical memory.
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* Used by the verbs layer.
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*/
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struct hfi1_seg {
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void *vaddr;
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size_t length;
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};
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/* The number of hfi1_segs that fit in a page. */
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#define HFI1_SEGSZ (PAGE_SIZE / sizeof(struct hfi1_seg))
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struct hfi1_segarray {
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struct hfi1_seg segs[HFI1_SEGSZ];
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};
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struct hfi1_mregion {
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struct ib_pd *pd; /* shares refcnt of ibmr.pd */
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u64 user_base; /* User's address for this region */
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u64 iova; /* IB start address of this region */
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size_t length;
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u32 lkey;
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u32 offset; /* offset (bytes) to start of region */
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int access_flags;
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u32 max_segs; /* number of hfi1_segs in all the arrays */
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u32 mapsz; /* size of the map array */
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u8 page_shift; /* 0 - non unform/non powerof2 sizes */
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u8 lkey_published; /* in global table */
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struct completion comp; /* complete when refcount goes to zero */
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atomic_t refcount;
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struct hfi1_segarray *map[0]; /* the segments */
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};
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/*
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* These keep track of the copy progress within a memory region.
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* Used by the verbs layer.
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*/
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struct hfi1_sge {
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struct hfi1_mregion *mr;
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void *vaddr; /* kernel virtual address of segment */
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u32 sge_length; /* length of the SGE */
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u32 length; /* remaining length of the segment */
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u16 m; /* current index: mr->map[m] */
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u16 n; /* current index: mr->map[m]->segs[n] */
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};
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/* Memory region */
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struct hfi1_mr {
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struct ib_mr ibmr;
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struct ib_umem *umem;
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struct hfi1_mregion mr; /* must be last */
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};
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/*
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* Send work request queue entry.
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* The size of the sg_list is determined when the QP is created and stored
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* in qp->s_max_sge.
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*/
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struct hfi1_swqe {
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struct ib_send_wr wr; /* don't use wr.sg_list */
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u32 psn; /* first packet sequence number */
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u32 lpsn; /* last packet sequence number */
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u32 ssn; /* send sequence number */
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u32 length; /* total length of data in sg_list */
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struct hfi1_sge sg_list[0];
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};
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/*
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* Receive work request queue entry.
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* The size of the sg_list is determined when the QP (or SRQ) is created
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* and stored in qp->r_rq.max_sge (or srq->rq.max_sge).
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*/
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struct hfi1_rwqe {
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u64 wr_id;
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u8 num_sge;
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struct ib_sge sg_list[0];
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};
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/*
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* This structure is used to contain the head pointer, tail pointer,
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* and receive work queue entries as a single memory allocation so
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* it can be mmap'ed into user space.
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* Note that the wq array elements are variable size so you can't
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* just index into the array to get the N'th element;
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* use get_rwqe_ptr() instead.
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*/
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struct hfi1_rwq {
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u32 head; /* new work requests posted to the head */
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u32 tail; /* receives pull requests from here. */
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struct hfi1_rwqe wq[0];
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};
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struct hfi1_rq {
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struct hfi1_rwq *wq;
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u32 size; /* size of RWQE array */
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u8 max_sge;
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/* protect changes in this struct */
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spinlock_t lock ____cacheline_aligned_in_smp;
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};
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struct hfi1_srq {
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struct ib_srq ibsrq;
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struct hfi1_rq rq;
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struct hfi1_mmap_info *ip;
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/* send signal when number of RWQEs < limit */
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u32 limit;
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};
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struct hfi1_sge_state {
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struct hfi1_sge *sg_list; /* next SGE to be used if any */
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struct hfi1_sge sge; /* progress state for the current SGE */
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u32 total_len;
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u8 num_sge;
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};
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/*
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* This structure holds the information that the send tasklet needs
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* to send a RDMA read response or atomic operation.
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*/
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struct hfi1_ack_entry {
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u8 opcode;
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u8 sent;
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u32 psn;
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u32 lpsn;
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union {
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struct hfi1_sge rdma_sge;
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u64 atomic_data;
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};
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};
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/*
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* Variables prefixed with s_ are for the requester (sender).
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* Variables prefixed with r_ are for the responder (receiver).
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* Variables prefixed with ack_ are for responder replies.
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*
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* Common variables are protected by both r_rq.lock and s_lock in that order
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* which only happens in modify_qp() or changing the QP 'state'.
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*/
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struct hfi1_qp {
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struct ib_qp ibqp;
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/* read mostly fields above and below */
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struct ib_ah_attr remote_ah_attr;
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struct ib_ah_attr alt_ah_attr;
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struct hfi1_qp __rcu *next; /* link list for QPN hash table */
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struct hfi1_swqe *s_wq; /* send work queue */
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struct hfi1_mmap_info *ip;
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struct ahg_ib_header *s_hdr; /* next packet header to send */
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u8 s_sc; /* SC[0..4] for next packet */
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unsigned long timeout_jiffies; /* computed from timeout */
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enum ib_mtu path_mtu;
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int srate_mbps; /* s_srate (below) converted to Mbit/s */
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u32 remote_qpn;
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u32 pmtu; /* decoded from path_mtu */
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u32 qkey; /* QKEY for this QP (for UD or RD) */
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u32 s_size; /* send work queue size */
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u32 s_rnr_timeout; /* number of milliseconds for RNR timeout */
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u32 s_ahgpsn; /* set to the psn in the copy of the header */
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u8 state; /* QP state */
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u8 allowed_ops; /* high order bits of allowed opcodes */
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u8 qp_access_flags;
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u8 alt_timeout; /* Alternate path timeout for this QP */
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u8 timeout; /* Timeout for this QP */
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u8 s_srate;
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u8 s_mig_state;
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u8 port_num;
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u8 s_pkey_index; /* PKEY index to use */
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u8 s_alt_pkey_index; /* Alternate path PKEY index to use */
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u8 r_max_rd_atomic; /* max number of RDMA read/atomic to receive */
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u8 s_max_rd_atomic; /* max number of RDMA read/atomic to send */
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u8 s_retry_cnt; /* number of times to retry */
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u8 s_rnr_retry_cnt;
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u8 r_min_rnr_timer; /* retry timeout value for RNR NAKs */
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u8 s_max_sge; /* size of s_wq->sg_list */
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u8 s_draining;
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/* start of read/write fields */
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atomic_t refcount ____cacheline_aligned_in_smp;
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wait_queue_head_t wait;
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struct hfi1_ack_entry s_ack_queue[HFI1_MAX_RDMA_ATOMIC + 1]
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____cacheline_aligned_in_smp;
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struct hfi1_sge_state s_rdma_read_sge;
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spinlock_t r_lock ____cacheline_aligned_in_smp; /* used for APM */
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unsigned long r_aflags;
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|
u64 r_wr_id; /* ID for current receive WQE */
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|
u32 r_ack_psn; /* PSN for next ACK or atomic ACK */
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|
u32 r_len; /* total length of r_sge */
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|
u32 r_rcv_len; /* receive data len processed */
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|
u32 r_psn; /* expected rcv packet sequence number */
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u32 r_msn; /* message sequence number */
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u8 r_state; /* opcode of last packet received */
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|
u8 r_flags;
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|
u8 r_head_ack_queue; /* index into s_ack_queue[] */
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|
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struct list_head rspwait; /* link for waiting to respond */
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|
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struct hfi1_sge_state r_sge; /* current receive data */
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|
struct hfi1_rq r_rq; /* receive work queue */
|
|
|
|
spinlock_t s_lock ____cacheline_aligned_in_smp;
|
|
struct hfi1_sge_state *s_cur_sge;
|
|
u32 s_flags;
|
|
struct hfi1_swqe *s_wqe;
|
|
struct hfi1_sge_state s_sge; /* current send request data */
|
|
struct hfi1_mregion *s_rdma_mr;
|
|
struct sdma_engine *s_sde; /* current sde */
|
|
u32 s_cur_size; /* size of send packet in bytes */
|
|
u32 s_len; /* total length of s_sge */
|
|
u32 s_rdma_read_len; /* total length of s_rdma_read_sge */
|
|
u32 s_next_psn; /* PSN for next request */
|
|
u32 s_last_psn; /* last response PSN processed */
|
|
u32 s_sending_psn; /* lowest PSN that is being sent */
|
|
u32 s_sending_hpsn; /* highest PSN that is being sent */
|
|
u32 s_psn; /* current packet sequence number */
|
|
u32 s_ack_rdma_psn; /* PSN for sending RDMA read responses */
|
|
u32 s_ack_psn; /* PSN for acking sends and RDMA writes */
|
|
u32 s_head; /* new entries added here */
|
|
u32 s_tail; /* next entry to process */
|
|
u32 s_cur; /* current work queue entry */
|
|
u32 s_acked; /* last un-ACK'ed entry */
|
|
u32 s_last; /* last completed entry */
|
|
u32 s_ssn; /* SSN of tail entry */
|
|
u32 s_lsn; /* limit sequence number (credit) */
|
|
u16 s_hdrwords; /* size of s_hdr in 32 bit words */
|
|
u16 s_rdma_ack_cnt;
|
|
s8 s_ahgidx;
|
|
u8 s_state; /* opcode of last packet sent */
|
|
u8 s_ack_state; /* opcode of packet to ACK */
|
|
u8 s_nak_state; /* non-zero if NAK is pending */
|
|
u8 r_nak_state; /* non-zero if NAK is pending */
|
|
u8 s_retry; /* requester retry counter */
|
|
u8 s_rnr_retry; /* requester RNR retry counter */
|
|
u8 s_num_rd_atomic; /* number of RDMA read/atomic pending */
|
|
u8 s_tail_ack_queue; /* index into s_ack_queue[] */
|
|
|
|
struct hfi1_sge_state s_ack_rdma_sge;
|
|
struct timer_list s_timer;
|
|
|
|
struct iowait s_iowait;
|
|
|
|
struct hfi1_sge r_sg_list[0] /* verified SGEs */
|
|
____cacheline_aligned_in_smp;
|
|
};
|
|
|
|
/*
|
|
* Atomic bit definitions for r_aflags.
|
|
*/
|
|
#define HFI1_R_WRID_VALID 0
|
|
#define HFI1_R_REWIND_SGE 1
|
|
|
|
/*
|
|
* Bit definitions for r_flags.
|
|
*/
|
|
#define HFI1_R_REUSE_SGE 0x01
|
|
#define HFI1_R_RDMAR_SEQ 0x02
|
|
#define HFI1_R_RSP_NAK 0x04
|
|
#define HFI1_R_RSP_SEND 0x08
|
|
#define HFI1_R_COMM_EST 0x10
|
|
|
|
/*
|
|
* Bit definitions for s_flags.
|
|
*
|
|
* HFI1_S_SIGNAL_REQ_WR - set if QP send WRs contain completion signaled
|
|
* HFI1_S_BUSY - send tasklet is processing the QP
|
|
* HFI1_S_TIMER - the RC retry timer is active
|
|
* HFI1_S_ACK_PENDING - an ACK is waiting to be sent after RDMA read/atomics
|
|
* HFI1_S_WAIT_FENCE - waiting for all prior RDMA read or atomic SWQEs
|
|
* before processing the next SWQE
|
|
* HFI1_S_WAIT_RDMAR - waiting for a RDMA read or atomic SWQE to complete
|
|
* before processing the next SWQE
|
|
* HFI1_S_WAIT_RNR - waiting for RNR timeout
|
|
* HFI1_S_WAIT_SSN_CREDIT - waiting for RC credits to process next SWQE
|
|
* HFI1_S_WAIT_DMA - waiting for send DMA queue to drain before generating
|
|
* next send completion entry not via send DMA
|
|
* HFI1_S_WAIT_PIO - waiting for a send buffer to be available
|
|
* HFI1_S_WAIT_TX - waiting for a struct verbs_txreq to be available
|
|
* HFI1_S_WAIT_DMA_DESC - waiting for DMA descriptors to be available
|
|
* HFI1_S_WAIT_KMEM - waiting for kernel memory to be available
|
|
* HFI1_S_WAIT_PSN - waiting for a packet to exit the send DMA queue
|
|
* HFI1_S_WAIT_ACK - waiting for an ACK packet before sending more requests
|
|
* HFI1_S_SEND_ONE - send one packet, request ACK, then wait for ACK
|
|
* HFI1_S_ECN - a BECN was queued to the send engine
|
|
*/
|
|
#define HFI1_S_SIGNAL_REQ_WR 0x0001
|
|
#define HFI1_S_BUSY 0x0002
|
|
#define HFI1_S_TIMER 0x0004
|
|
#define HFI1_S_RESP_PENDING 0x0008
|
|
#define HFI1_S_ACK_PENDING 0x0010
|
|
#define HFI1_S_WAIT_FENCE 0x0020
|
|
#define HFI1_S_WAIT_RDMAR 0x0040
|
|
#define HFI1_S_WAIT_RNR 0x0080
|
|
#define HFI1_S_WAIT_SSN_CREDIT 0x0100
|
|
#define HFI1_S_WAIT_DMA 0x0200
|
|
#define HFI1_S_WAIT_PIO 0x0400
|
|
#define HFI1_S_WAIT_TX 0x0800
|
|
#define HFI1_S_WAIT_DMA_DESC 0x1000
|
|
#define HFI1_S_WAIT_KMEM 0x2000
|
|
#define HFI1_S_WAIT_PSN 0x4000
|
|
#define HFI1_S_WAIT_ACK 0x8000
|
|
#define HFI1_S_SEND_ONE 0x10000
|
|
#define HFI1_S_UNLIMITED_CREDIT 0x20000
|
|
#define HFI1_S_AHG_VALID 0x40000
|
|
#define HFI1_S_AHG_CLEAR 0x80000
|
|
#define HFI1_S_ECN 0x100000
|
|
|
|
/*
|
|
* Wait flags that would prevent any packet type from being sent.
|
|
*/
|
|
#define HFI1_S_ANY_WAIT_IO (HFI1_S_WAIT_PIO | HFI1_S_WAIT_TX | \
|
|
HFI1_S_WAIT_DMA_DESC | HFI1_S_WAIT_KMEM)
|
|
|
|
/*
|
|
* Wait flags that would prevent send work requests from making progress.
|
|
*/
|
|
#define HFI1_S_ANY_WAIT_SEND (HFI1_S_WAIT_FENCE | HFI1_S_WAIT_RDMAR | \
|
|
HFI1_S_WAIT_RNR | HFI1_S_WAIT_SSN_CREDIT | HFI1_S_WAIT_DMA | \
|
|
HFI1_S_WAIT_PSN | HFI1_S_WAIT_ACK)
|
|
|
|
#define HFI1_S_ANY_WAIT (HFI1_S_ANY_WAIT_IO | HFI1_S_ANY_WAIT_SEND)
|
|
|
|
#define HFI1_PSN_CREDIT 16
|
|
|
|
/*
|
|
* Since struct hfi1_swqe is not a fixed size, we can't simply index into
|
|
* struct hfi1_qp.s_wq. This function does the array index computation.
|
|
*/
|
|
static inline struct hfi1_swqe *get_swqe_ptr(struct hfi1_qp *qp,
|
|
unsigned n)
|
|
{
|
|
return (struct hfi1_swqe *)((char *)qp->s_wq +
|
|
(sizeof(struct hfi1_swqe) +
|
|
qp->s_max_sge *
|
|
sizeof(struct hfi1_sge)) * n);
|
|
}
|
|
|
|
/*
|
|
* Since struct hfi1_rwqe is not a fixed size, we can't simply index into
|
|
* struct hfi1_rwq.wq. This function does the array index computation.
|
|
*/
|
|
static inline struct hfi1_rwqe *get_rwqe_ptr(struct hfi1_rq *rq, unsigned n)
|
|
{
|
|
return (struct hfi1_rwqe *)
|
|
((char *) rq->wq->wq +
|
|
(sizeof(struct hfi1_rwqe) +
|
|
rq->max_sge * sizeof(struct ib_sge)) * n);
|
|
}
|
|
|
|
#define MAX_LKEY_TABLE_BITS 23
|
|
|
|
struct hfi1_lkey_table {
|
|
spinlock_t lock; /* protect changes in this struct */
|
|
u32 next; /* next unused index (speeds search) */
|
|
u32 gen; /* generation count */
|
|
u32 max; /* size of the table */
|
|
struct hfi1_mregion __rcu **table;
|
|
};
|
|
|
|
struct hfi1_opcode_stats {
|
|
u64 n_packets; /* number of packets */
|
|
u64 n_bytes; /* total number of bytes */
|
|
};
|
|
|
|
struct hfi1_opcode_stats_perctx {
|
|
struct hfi1_opcode_stats stats[256];
|
|
};
|
|
|
|
static inline void inc_opstats(
|
|
u32 tlen,
|
|
struct hfi1_opcode_stats *stats)
|
|
{
|
|
#ifdef CONFIG_DEBUG_FS
|
|
stats->n_bytes += tlen;
|
|
stats->n_packets++;
|
|
#endif
|
|
}
|
|
|
|
struct hfi1_ibport {
|
|
struct hfi1_qp __rcu *qp[2];
|
|
struct ib_mad_agent *send_agent; /* agent for SMI (traps) */
|
|
struct hfi1_ah *sm_ah;
|
|
struct hfi1_ah *smi_ah;
|
|
struct rb_root mcast_tree;
|
|
spinlock_t lock; /* protect changes in this struct */
|
|
|
|
/* non-zero when timer is set */
|
|
unsigned long mkey_lease_timeout;
|
|
unsigned long trap_timeout;
|
|
__be64 gid_prefix; /* in network order */
|
|
__be64 mkey;
|
|
__be64 guids[HFI1_GUIDS_PER_PORT - 1]; /* writable GUIDs */
|
|
u64 tid; /* TID for traps */
|
|
u64 n_rc_resends;
|
|
u64 n_seq_naks;
|
|
u64 n_rdma_seq;
|
|
u64 n_rnr_naks;
|
|
u64 n_other_naks;
|
|
u64 n_loop_pkts;
|
|
u64 n_pkt_drops;
|
|
u64 n_vl15_dropped;
|
|
u64 n_rc_timeouts;
|
|
u64 n_dmawait;
|
|
u64 n_unaligned;
|
|
u64 n_rc_dupreq;
|
|
u64 n_rc_seqnak;
|
|
|
|
/* Hot-path per CPU counters to avoid cacheline trading to update */
|
|
u64 z_rc_acks;
|
|
u64 z_rc_qacks;
|
|
u64 z_rc_delayed_comp;
|
|
u64 __percpu *rc_acks;
|
|
u64 __percpu *rc_qacks;
|
|
u64 __percpu *rc_delayed_comp;
|
|
|
|
u32 port_cap_flags;
|
|
u32 pma_sample_start;
|
|
u32 pma_sample_interval;
|
|
__be16 pma_counter_select[5];
|
|
u16 pma_tag;
|
|
u16 pkey_violations;
|
|
u16 qkey_violations;
|
|
u16 mkey_violations;
|
|
u16 mkey_lease_period;
|
|
u16 sm_lid;
|
|
u16 repress_traps;
|
|
u8 sm_sl;
|
|
u8 mkeyprot;
|
|
u8 subnet_timeout;
|
|
u8 vl_high_limit;
|
|
/* the first 16 entries are sl_to_vl for !OPA */
|
|
u8 sl_to_sc[32];
|
|
u8 sc_to_sl[32];
|
|
};
|
|
|
|
|
|
struct hfi1_qp_ibdev;
|
|
struct hfi1_ibdev {
|
|
struct ib_device ibdev;
|
|
struct list_head pending_mmaps;
|
|
spinlock_t mmap_offset_lock; /* protect mmap_offset */
|
|
u32 mmap_offset;
|
|
struct hfi1_mregion __rcu *dma_mr;
|
|
|
|
struct hfi1_qp_ibdev *qp_dev;
|
|
|
|
/* QP numbers are shared by all IB ports */
|
|
struct hfi1_lkey_table lk_table;
|
|
/* protect wait lists */
|
|
seqlock_t iowait_lock;
|
|
struct list_head txwait; /* list for wait verbs_txreq */
|
|
struct list_head memwait; /* list for wait kernel memory */
|
|
struct list_head txreq_free;
|
|
struct kmem_cache *verbs_txreq_cache;
|
|
struct timer_list mem_timer;
|
|
|
|
/* other waiters */
|
|
spinlock_t pending_lock;
|
|
|
|
u64 n_piowait;
|
|
u64 n_txwait;
|
|
u64 n_kmem_wait;
|
|
|
|
u32 n_pds_allocated; /* number of PDs allocated for device */
|
|
spinlock_t n_pds_lock;
|
|
u32 n_ahs_allocated; /* number of AHs allocated for device */
|
|
spinlock_t n_ahs_lock;
|
|
u32 n_cqs_allocated; /* number of CQs allocated for device */
|
|
spinlock_t n_cqs_lock;
|
|
u32 n_qps_allocated; /* number of QPs allocated for device */
|
|
spinlock_t n_qps_lock;
|
|
u32 n_srqs_allocated; /* number of SRQs allocated for device */
|
|
spinlock_t n_srqs_lock;
|
|
u32 n_mcast_grps_allocated; /* number of mcast groups allocated */
|
|
spinlock_t n_mcast_grps_lock;
|
|
#ifdef CONFIG_DEBUG_FS
|
|
/* per HFI debugfs */
|
|
struct dentry *hfi1_ibdev_dbg;
|
|
/* per HFI symlinks to above */
|
|
struct dentry *hfi1_ibdev_link;
|
|
#endif
|
|
};
|
|
|
|
struct hfi1_verbs_counters {
|
|
u64 symbol_error_counter;
|
|
u64 link_error_recovery_counter;
|
|
u64 link_downed_counter;
|
|
u64 port_rcv_errors;
|
|
u64 port_rcv_remphys_errors;
|
|
u64 port_xmit_discards;
|
|
u64 port_xmit_data;
|
|
u64 port_rcv_data;
|
|
u64 port_xmit_packets;
|
|
u64 port_rcv_packets;
|
|
u32 local_link_integrity_errors;
|
|
u32 excessive_buffer_overrun_errors;
|
|
u32 vl15_dropped;
|
|
};
|
|
|
|
static inline struct hfi1_mr *to_imr(struct ib_mr *ibmr)
|
|
{
|
|
return container_of(ibmr, struct hfi1_mr, ibmr);
|
|
}
|
|
|
|
static inline struct hfi1_pd *to_ipd(struct ib_pd *ibpd)
|
|
{
|
|
return container_of(ibpd, struct hfi1_pd, ibpd);
|
|
}
|
|
|
|
static inline struct hfi1_ah *to_iah(struct ib_ah *ibah)
|
|
{
|
|
return container_of(ibah, struct hfi1_ah, ibah);
|
|
}
|
|
|
|
static inline struct hfi1_cq *to_icq(struct ib_cq *ibcq)
|
|
{
|
|
return container_of(ibcq, struct hfi1_cq, ibcq);
|
|
}
|
|
|
|
static inline struct hfi1_srq *to_isrq(struct ib_srq *ibsrq)
|
|
{
|
|
return container_of(ibsrq, struct hfi1_srq, ibsrq);
|
|
}
|
|
|
|
static inline struct hfi1_qp *to_iqp(struct ib_qp *ibqp)
|
|
{
|
|
return container_of(ibqp, struct hfi1_qp, ibqp);
|
|
}
|
|
|
|
static inline struct hfi1_ibdev *to_idev(struct ib_device *ibdev)
|
|
{
|
|
return container_of(ibdev, struct hfi1_ibdev, ibdev);
|
|
}
|
|
|
|
/*
|
|
* Send if not busy or waiting for I/O and either
|
|
* a RC response is pending or we can process send work requests.
|
|
*/
|
|
static inline int hfi1_send_ok(struct hfi1_qp *qp)
|
|
{
|
|
return !(qp->s_flags & (HFI1_S_BUSY | HFI1_S_ANY_WAIT_IO)) &&
|
|
(qp->s_hdrwords || (qp->s_flags & HFI1_S_RESP_PENDING) ||
|
|
!(qp->s_flags & HFI1_S_ANY_WAIT_SEND));
|
|
}
|
|
|
|
/*
|
|
* This must be called with s_lock held.
|
|
*/
|
|
void hfi1_schedule_send(struct hfi1_qp *qp);
|
|
void hfi1_bad_pqkey(struct hfi1_ibport *ibp, __be16 trap_num, u32 key, u32 sl,
|
|
u32 qp1, u32 qp2, __be16 lid1, __be16 lid2);
|
|
void hfi1_cap_mask_chg(struct hfi1_ibport *ibp);
|
|
void hfi1_sys_guid_chg(struct hfi1_ibport *ibp);
|
|
void hfi1_node_desc_chg(struct hfi1_ibport *ibp);
|
|
int hfi1_process_mad(struct ib_device *ibdev, int mad_flags, u8 port,
|
|
const struct ib_wc *in_wc, const struct ib_grh *in_grh,
|
|
const struct ib_mad_hdr *in_mad, size_t in_mad_size,
|
|
struct ib_mad_hdr *out_mad, size_t *out_mad_size,
|
|
u16 *out_mad_pkey_index);
|
|
int hfi1_create_agents(struct hfi1_ibdev *dev);
|
|
void hfi1_free_agents(struct hfi1_ibdev *dev);
|
|
|
|
/*
|
|
* The PSN_MASK and PSN_SHIFT allow for
|
|
* 1) comparing two PSNs
|
|
* 2) returning the PSN with any upper bits masked
|
|
* 3) returning the difference between to PSNs
|
|
*
|
|
* The number of significant bits in the PSN must
|
|
* necessarily be at least one bit less than
|
|
* the container holding the PSN.
|
|
*/
|
|
#ifndef CONFIG_HFI1_VERBS_31BIT_PSN
|
|
#define PSN_MASK 0xFFFFFF
|
|
#define PSN_SHIFT 8
|
|
#else
|
|
#define PSN_MASK 0x7FFFFFFF
|
|
#define PSN_SHIFT 1
|
|
#endif
|
|
#define PSN_MODIFY_MASK 0xFFFFFF
|
|
|
|
/* Number of bits to pay attention to in the opcode for checking qp type */
|
|
#define OPCODE_QP_MASK 0xE0
|
|
|
|
/*
|
|
* Compare the lower 24 bits of the msn values.
|
|
* Returns an integer <, ==, or > than zero.
|
|
*/
|
|
static inline int cmp_msn(u32 a, u32 b)
|
|
{
|
|
return (((int) a) - ((int) b)) << 8;
|
|
}
|
|
|
|
/*
|
|
* Compare two PSNs
|
|
* Returns an integer <, ==, or > than zero.
|
|
*/
|
|
static inline int cmp_psn(u32 a, u32 b)
|
|
{
|
|
return (((int) a) - ((int) b)) << PSN_SHIFT;
|
|
}
|
|
|
|
/*
|
|
* Return masked PSN
|
|
*/
|
|
static inline u32 mask_psn(u32 a)
|
|
{
|
|
return a & PSN_MASK;
|
|
}
|
|
|
|
/*
|
|
* Return delta between two PSNs
|
|
*/
|
|
static inline u32 delta_psn(u32 a, u32 b)
|
|
{
|
|
return (((int)a - (int)b) << PSN_SHIFT) >> PSN_SHIFT;
|
|
}
|
|
|
|
struct hfi1_mcast *hfi1_mcast_find(struct hfi1_ibport *ibp, union ib_gid *mgid);
|
|
|
|
int hfi1_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
|
|
|
|
int hfi1_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid);
|
|
|
|
int hfi1_mcast_tree_empty(struct hfi1_ibport *ibp);
|
|
|
|
struct verbs_txreq;
|
|
void hfi1_put_txreq(struct verbs_txreq *tx);
|
|
|
|
int hfi1_verbs_send(struct hfi1_qp *qp, struct ahg_ib_header *ahdr,
|
|
u32 hdrwords, struct hfi1_sge_state *ss, u32 len);
|
|
|
|
void hfi1_copy_sge(struct hfi1_sge_state *ss, void *data, u32 length,
|
|
int release);
|
|
|
|
void hfi1_skip_sge(struct hfi1_sge_state *ss, u32 length, int release);
|
|
|
|
void hfi1_cnp_rcv(struct hfi1_packet *packet);
|
|
|
|
void hfi1_uc_rcv(struct hfi1_packet *packet);
|
|
|
|
void hfi1_rc_rcv(struct hfi1_packet *packet);
|
|
|
|
void hfi1_rc_hdrerr(
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struct hfi1_ctxtdata *rcd,
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struct hfi1_ib_header *hdr,
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u32 rcv_flags,
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struct hfi1_qp *qp);
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u8 ah_to_sc(struct ib_device *ibdev, struct ib_ah_attr *ah_attr);
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int hfi1_check_ah(struct ib_device *ibdev, struct ib_ah_attr *ah_attr);
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struct ib_ah *hfi1_create_qp0_ah(struct hfi1_ibport *ibp, u16 dlid);
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void hfi1_rc_rnr_retry(unsigned long arg);
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void hfi1_rc_send_complete(struct hfi1_qp *qp, struct hfi1_ib_header *hdr);
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void hfi1_rc_error(struct hfi1_qp *qp, enum ib_wc_status err);
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void hfi1_ud_rcv(struct hfi1_packet *packet);
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int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey);
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int hfi1_alloc_lkey(struct hfi1_mregion *mr, int dma_region);
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void hfi1_free_lkey(struct hfi1_mregion *mr);
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int hfi1_lkey_ok(struct hfi1_lkey_table *rkt, struct hfi1_pd *pd,
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struct hfi1_sge *isge, struct ib_sge *sge, int acc);
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int hfi1_rkey_ok(struct hfi1_qp *qp, struct hfi1_sge *sge,
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u32 len, u64 vaddr, u32 rkey, int acc);
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int hfi1_post_srq_receive(struct ib_srq *ibsrq, struct ib_recv_wr *wr,
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struct ib_recv_wr **bad_wr);
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struct ib_srq *hfi1_create_srq(struct ib_pd *ibpd,
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struct ib_srq_init_attr *srq_init_attr,
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struct ib_udata *udata);
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int hfi1_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
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enum ib_srq_attr_mask attr_mask,
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struct ib_udata *udata);
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int hfi1_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr);
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int hfi1_destroy_srq(struct ib_srq *ibsrq);
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int hfi1_cq_init(struct hfi1_devdata *dd);
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void hfi1_cq_exit(struct hfi1_devdata *dd);
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void hfi1_cq_enter(struct hfi1_cq *cq, struct ib_wc *entry, int sig);
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int hfi1_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *entry);
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struct ib_cq *hfi1_create_cq(
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struct ib_device *ibdev,
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const struct ib_cq_init_attr *attr,
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struct ib_ucontext *context,
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struct ib_udata *udata);
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int hfi1_destroy_cq(struct ib_cq *ibcq);
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int hfi1_req_notify_cq(
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struct ib_cq *ibcq,
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enum ib_cq_notify_flags notify_flags);
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int hfi1_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata);
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struct ib_mr *hfi1_get_dma_mr(struct ib_pd *pd, int acc);
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struct ib_mr *hfi1_reg_phys_mr(struct ib_pd *pd,
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struct ib_phys_buf *buffer_list,
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int num_phys_buf, int acc, u64 *iova_start);
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struct ib_mr *hfi1_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
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u64 virt_addr, int mr_access_flags,
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struct ib_udata *udata);
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int hfi1_dereg_mr(struct ib_mr *ibmr);
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struct ib_mr *hfi1_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len);
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struct ib_fast_reg_page_list *hfi1_alloc_fast_reg_page_list(
|
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struct ib_device *ibdev, int page_list_len);
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void hfi1_free_fast_reg_page_list(struct ib_fast_reg_page_list *pl);
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int hfi1_fast_reg_mr(struct hfi1_qp *qp, struct ib_send_wr *wr);
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struct ib_fmr *hfi1_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
|
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struct ib_fmr_attr *fmr_attr);
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int hfi1_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
|
|
int list_len, u64 iova);
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int hfi1_unmap_fmr(struct list_head *fmr_list);
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|
|
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int hfi1_dealloc_fmr(struct ib_fmr *ibfmr);
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|
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static inline void hfi1_get_mr(struct hfi1_mregion *mr)
|
|
{
|
|
atomic_inc(&mr->refcount);
|
|
}
|
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|
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static inline void hfi1_put_mr(struct hfi1_mregion *mr)
|
|
{
|
|
if (unlikely(atomic_dec_and_test(&mr->refcount)))
|
|
complete(&mr->comp);
|
|
}
|
|
|
|
static inline void hfi1_put_ss(struct hfi1_sge_state *ss)
|
|
{
|
|
while (ss->num_sge) {
|
|
hfi1_put_mr(ss->sge.mr);
|
|
if (--ss->num_sge)
|
|
ss->sge = *ss->sg_list++;
|
|
}
|
|
}
|
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|
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void hfi1_release_mmap_info(struct kref *ref);
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|
|
|
struct hfi1_mmap_info *hfi1_create_mmap_info(struct hfi1_ibdev *dev, u32 size,
|
|
struct ib_ucontext *context,
|
|
void *obj);
|
|
|
|
void hfi1_update_mmap_info(struct hfi1_ibdev *dev, struct hfi1_mmap_info *ip,
|
|
u32 size, void *obj);
|
|
|
|
int hfi1_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
|
|
|
|
int hfi1_get_rwqe(struct hfi1_qp *qp, int wr_id_only);
|
|
|
|
void hfi1_migrate_qp(struct hfi1_qp *qp);
|
|
|
|
int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_ib_header *hdr,
|
|
int has_grh, struct hfi1_qp *qp, u32 bth0);
|
|
|
|
u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr,
|
|
struct ib_global_route *grh, u32 hwords, u32 nwords);
|
|
|
|
void clear_ahg(struct hfi1_qp *qp);
|
|
|
|
void hfi1_make_ruc_header(struct hfi1_qp *qp, struct hfi1_other_headers *ohdr,
|
|
u32 bth0, u32 bth2, int middle);
|
|
|
|
void hfi1_do_send(struct work_struct *work);
|
|
|
|
void hfi1_send_complete(struct hfi1_qp *qp, struct hfi1_swqe *wqe,
|
|
enum ib_wc_status status);
|
|
|
|
void hfi1_send_rc_ack(struct hfi1_ctxtdata *, struct hfi1_qp *qp, int is_fecn);
|
|
|
|
int hfi1_make_rc_req(struct hfi1_qp *qp);
|
|
|
|
int hfi1_make_uc_req(struct hfi1_qp *qp);
|
|
|
|
int hfi1_make_ud_req(struct hfi1_qp *qp);
|
|
|
|
int hfi1_register_ib_device(struct hfi1_devdata *);
|
|
|
|
void hfi1_unregister_ib_device(struct hfi1_devdata *);
|
|
|
|
void hfi1_ib_rcv(struct hfi1_packet *packet);
|
|
|
|
unsigned hfi1_get_npkeys(struct hfi1_devdata *);
|
|
|
|
int hfi1_verbs_send_dma(struct hfi1_qp *qp, struct ahg_ib_header *hdr,
|
|
u32 hdrwords, struct hfi1_sge_state *ss, u32 len,
|
|
u32 plen, u32 dwords, u64 pbc);
|
|
|
|
int hfi1_verbs_send_pio(struct hfi1_qp *qp, struct ahg_ib_header *hdr,
|
|
u32 hdrwords, struct hfi1_sge_state *ss, u32 len,
|
|
u32 plen, u32 dwords, u64 pbc);
|
|
|
|
struct send_context *qp_to_send_context(struct hfi1_qp *qp, u8 sc5);
|
|
|
|
extern const enum ib_wc_opcode ib_hfi1_wc_opcode[];
|
|
|
|
extern const u8 hdr_len_by_opcode[];
|
|
|
|
extern const int ib_hfi1_state_ops[];
|
|
|
|
extern __be64 ib_hfi1_sys_image_guid; /* in network order */
|
|
|
|
extern unsigned int hfi1_lkey_table_size;
|
|
|
|
extern unsigned int hfi1_max_cqes;
|
|
|
|
extern unsigned int hfi1_max_cqs;
|
|
|
|
extern unsigned int hfi1_max_qp_wrs;
|
|
|
|
extern unsigned int hfi1_max_qps;
|
|
|
|
extern unsigned int hfi1_max_sges;
|
|
|
|
extern unsigned int hfi1_max_mcast_grps;
|
|
|
|
extern unsigned int hfi1_max_mcast_qp_attached;
|
|
|
|
extern unsigned int hfi1_max_srqs;
|
|
|
|
extern unsigned int hfi1_max_srq_sges;
|
|
|
|
extern unsigned int hfi1_max_srq_wrs;
|
|
|
|
extern const u32 ib_hfi1_rnr_table[];
|
|
|
|
extern struct ib_dma_mapping_ops hfi1_dma_mapping_ops;
|
|
|
|
#endif /* HFI1_VERBS_H */
|