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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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fab97220c9
Add a driver for IBM GX bus InfiniBand adapters, which are usable with some pSeries/System p systems. Signed-off-by: Heiko J Schick <schickhj.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
260 lines
6.0 KiB
C
260 lines
6.0 KiB
C
/*
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* IBM eServer eHCA Infiniband device driver for Linux on POWER
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*
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* Hardware request structures
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*
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* Authors: Waleri Fomin <fomin@de.ibm.com>
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* Reinhard Ernst <rernst@de.ibm.com>
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* Christoph Raisch <raisch@de.ibm.com>
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*
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* Copyright (c) 2005 IBM Corporation
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*
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* All rights reserved.
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*
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* This source code is distributed under a dual license of GPL v2.0 and OpenIB
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* BSD.
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*
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* OpenIB BSD License
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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 are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _EHCA_QES_H_
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#define _EHCA_QES_H_
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#include "ehca_tools.h"
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/* virtual scatter gather entry to specify remote adresses with length */
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struct ehca_vsgentry {
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u64 vaddr;
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u32 lkey;
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u32 length;
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};
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#define GRH_FLAG_MASK EHCA_BMASK_IBM(7,7)
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#define GRH_IPVERSION_MASK EHCA_BMASK_IBM(0,3)
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#define GRH_TCLASS_MASK EHCA_BMASK_IBM(4,12)
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#define GRH_FLOWLABEL_MASK EHCA_BMASK_IBM(13,31)
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#define GRH_PAYLEN_MASK EHCA_BMASK_IBM(32,47)
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#define GRH_NEXTHEADER_MASK EHCA_BMASK_IBM(48,55)
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#define GRH_HOPLIMIT_MASK EHCA_BMASK_IBM(56,63)
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/*
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* Unreliable Datagram Address Vector Format
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* see IBTA Vol1 chapter 8.3 Global Routing Header
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*/
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struct ehca_ud_av {
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u8 sl;
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u8 lnh;
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u16 dlid;
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u8 reserved1;
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u8 reserved2;
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u8 reserved3;
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u8 slid_path_bits;
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u8 reserved4;
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u8 ipd;
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u8 reserved5;
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u8 pmtu;
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u32 reserved6;
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u64 reserved7;
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union {
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struct {
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u64 word_0; /* always set to 6 */
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/*should be 0x1B for IB transport */
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u64 word_1;
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u64 word_2;
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u64 word_3;
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u64 word_4;
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} grh;
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struct {
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u32 wd_0;
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u32 wd_1;
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/* DWord_1 --> SGID */
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u32 sgid_wd3;
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u32 sgid_wd2;
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u32 sgid_wd1;
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u32 sgid_wd0;
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/* DWord_3 --> DGID */
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u32 dgid_wd3;
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u32 dgid_wd2;
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u32 dgid_wd1;
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u32 dgid_wd0;
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} grh_l;
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};
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};
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/* maximum number of sg entries allowed in a WQE */
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#define MAX_WQE_SG_ENTRIES 252
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#define WQE_OPTYPE_SEND 0x80
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#define WQE_OPTYPE_RDMAREAD 0x40
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#define WQE_OPTYPE_RDMAWRITE 0x20
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#define WQE_OPTYPE_CMPSWAP 0x10
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#define WQE_OPTYPE_FETCHADD 0x08
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#define WQE_OPTYPE_BIND 0x04
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#define WQE_WRFLAG_REQ_SIGNAL_COM 0x80
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#define WQE_WRFLAG_FENCE 0x40
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#define WQE_WRFLAG_IMM_DATA_PRESENT 0x20
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#define WQE_WRFLAG_SOLIC_EVENT 0x10
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#define WQEF_CACHE_HINT 0x80
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#define WQEF_CACHE_HINT_RD_WR 0x40
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#define WQEF_TIMED_WQE 0x20
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#define WQEF_PURGE 0x08
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#define WQEF_HIGH_NIBBLE 0xF0
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#define MW_BIND_ACCESSCTRL_R_WRITE 0x40
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#define MW_BIND_ACCESSCTRL_R_READ 0x20
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#define MW_BIND_ACCESSCTRL_R_ATOMIC 0x10
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struct ehca_wqe {
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u64 work_request_id;
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u8 optype;
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u8 wr_flag;
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u16 pkeyi;
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u8 wqef;
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u8 nr_of_data_seg;
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u16 wqe_provided_slid;
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u32 destination_qp_number;
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u32 resync_psn_sqp;
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u32 local_ee_context_qkey;
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u32 immediate_data;
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union {
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struct {
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u64 remote_virtual_adress;
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u32 rkey;
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u32 reserved;
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u64 atomic_1st_op_dma_len;
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u64 atomic_2nd_op;
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struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES];
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} nud;
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struct {
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u64 ehca_ud_av_ptr;
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u64 reserved1;
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u64 reserved2;
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u64 reserved3;
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struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES];
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} ud_avp;
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struct {
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struct ehca_ud_av ud_av;
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struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES -
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2];
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} ud_av;
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struct {
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u64 reserved0;
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u64 reserved1;
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u64 reserved2;
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u64 reserved3;
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struct ehca_vsgentry sg_list[MAX_WQE_SG_ENTRIES];
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} all_rcv;
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struct {
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u64 reserved;
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u32 rkey;
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u32 old_rkey;
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u64 reserved1;
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u64 reserved2;
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u64 virtual_address;
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u32 reserved3;
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u32 length;
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u32 reserved4;
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u16 reserved5;
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u8 reserved6;
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u8 lr_ctl;
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u32 lkey;
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u32 reserved7;
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u64 reserved8;
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u64 reserved9;
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u64 reserved10;
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u64 reserved11;
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} bind;
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struct {
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u64 reserved12;
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u64 reserved13;
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u32 size;
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u32 start;
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} inline_data;
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} u;
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};
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#define WC_SEND_RECEIVE EHCA_BMASK_IBM(0,0)
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#define WC_IMM_DATA EHCA_BMASK_IBM(1,1)
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#define WC_GRH_PRESENT EHCA_BMASK_IBM(2,2)
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#define WC_SE_BIT EHCA_BMASK_IBM(3,3)
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#define WC_STATUS_ERROR_BIT 0x80000000
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#define WC_STATUS_REMOTE_ERROR_FLAGS 0x0000F800
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#define WC_STATUS_PURGE_BIT 0x10
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struct ehca_cqe {
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u64 work_request_id;
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u8 optype;
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u8 w_completion_flags;
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u16 reserved1;
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u32 nr_bytes_transferred;
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u32 immediate_data;
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u32 local_qp_number;
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u8 freed_resource_count;
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u8 service_level;
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u16 wqe_count;
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u32 qp_token;
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u32 qkey_ee_token;
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u32 remote_qp_number;
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u16 dlid;
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u16 rlid;
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u16 reserved2;
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u16 pkey_index;
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u32 cqe_timestamp;
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u32 wqe_timestamp;
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u8 wqe_timestamp_valid;
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u8 reserved3;
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u8 reserved4;
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u8 cqe_flags;
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u32 status;
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};
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struct ehca_eqe {
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u64 entry;
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};
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struct ehca_mrte {
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u64 starting_va;
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u64 length; /* length of memory region in bytes*/
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u32 pd;
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u8 key_instance;
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u8 pagesize;
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u8 mr_control;
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u8 local_remote_access_ctrl;
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u8 reserved[0x20 - 0x18];
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u64 at_pointer[4];
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};
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#endif /*_EHCA_QES_H_*/
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