238 lines
6.9 KiB
C
238 lines
6.9 KiB
C
/*
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* IBM eServer eHCA Infiniband device driver for Linux on POWER
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*
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* SQP functions
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*
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* Authors: Khadija Souissi <souissi@de.ibm.com>
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* Heiko J Schick <schickhj@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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#include <rdma/ib_mad.h>
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#include "ehca_classes.h"
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#include "ehca_tools.h"
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#include "ehca_iverbs.h"
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#include "hcp_if.h"
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#define IB_MAD_STATUS_REDIRECT cpu_to_be16(0x0002)
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#define IB_MAD_STATUS_UNSUP_VERSION cpu_to_be16(0x0004)
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#define IB_MAD_STATUS_UNSUP_METHOD cpu_to_be16(0x0008)
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#define IB_PMA_CLASS_PORT_INFO cpu_to_be16(0x0001)
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/**
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* ehca_define_sqp - Defines special queue pair 1 (GSI QP). When special queue
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* pair is created successfully, the corresponding port gets active.
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*
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* Define Special Queue pair 0 (SMI QP) is still not supported.
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*
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* @qp_init_attr: Queue pair init attributes with port and queue pair type
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*/
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u64 ehca_define_sqp(struct ehca_shca *shca,
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struct ehca_qp *ehca_qp,
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struct ib_qp_init_attr *qp_init_attr)
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{
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u32 pma_qp_nr, bma_qp_nr;
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u64 ret;
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u8 port = qp_init_attr->port_num;
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int counter;
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shca->sport[port - 1].port_state = IB_PORT_DOWN;
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switch (qp_init_attr->qp_type) {
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case IB_QPT_SMI:
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/* function not supported yet */
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break;
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case IB_QPT_GSI:
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ret = hipz_h_define_aqp1(shca->ipz_hca_handle,
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ehca_qp->ipz_qp_handle,
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ehca_qp->galpas.kernel,
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(u32) qp_init_attr->port_num,
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&pma_qp_nr, &bma_qp_nr);
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if (ret != H_SUCCESS) {
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ehca_err(&shca->ib_device,
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"Can't define AQP1 for port %x. h_ret=%lli",
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port, ret);
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return ret;
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}
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shca->sport[port - 1].pma_qp_nr = pma_qp_nr;
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ehca_dbg(&shca->ib_device, "port=%x pma_qp_nr=%x",
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port, pma_qp_nr);
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break;
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default:
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ehca_err(&shca->ib_device, "invalid qp_type=%x",
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qp_init_attr->qp_type);
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return H_PARAMETER;
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}
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if (ehca_nr_ports < 0) /* autodetect mode */
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return H_SUCCESS;
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for (counter = 0;
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shca->sport[port - 1].port_state != IB_PORT_ACTIVE &&
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counter < ehca_port_act_time;
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counter++) {
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ehca_dbg(&shca->ib_device, "... wait until port %x is active",
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port);
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msleep_interruptible(1000);
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}
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if (counter == ehca_port_act_time) {
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ehca_err(&shca->ib_device, "Port %x is not active.", port);
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return H_HARDWARE;
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}
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return H_SUCCESS;
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}
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struct ib_perf {
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struct ib_mad_hdr mad_hdr;
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u8 reserved[40];
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u8 data[192];
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} __attribute__ ((packed));
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/* TC/SL/FL packed into 32 bits, as in ClassPortInfo */
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struct tcslfl {
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u32 tc:8;
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u32 sl:4;
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u32 fl:20;
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} __attribute__ ((packed));
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/* IP Version/TC/FL packed into 32 bits, as in GRH */
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struct vertcfl {
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u32 ver:4;
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u32 tc:8;
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u32 fl:20;
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} __attribute__ ((packed));
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static int ehca_process_perf(struct ib_device *ibdev, u8 port_num,
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struct ib_wc *in_wc, struct ib_grh *in_grh,
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struct ib_mad *in_mad, struct ib_mad *out_mad)
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{
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struct ib_perf *in_perf = (struct ib_perf *)in_mad;
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struct ib_perf *out_perf = (struct ib_perf *)out_mad;
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struct ib_class_port_info *poi =
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(struct ib_class_port_info *)out_perf->data;
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struct tcslfl *tcslfl =
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(struct tcslfl *)&poi->redirect_tcslfl;
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struct ehca_shca *shca =
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container_of(ibdev, struct ehca_shca, ib_device);
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struct ehca_sport *sport = &shca->sport[port_num - 1];
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ehca_dbg(ibdev, "method=%x", in_perf->mad_hdr.method);
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*out_mad = *in_mad;
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if (in_perf->mad_hdr.class_version != 1) {
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ehca_warn(ibdev, "Unsupported class_version=%x",
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in_perf->mad_hdr.class_version);
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out_perf->mad_hdr.status = IB_MAD_STATUS_UNSUP_VERSION;
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goto perf_reply;
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}
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switch (in_perf->mad_hdr.method) {
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case IB_MGMT_METHOD_GET:
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case IB_MGMT_METHOD_SET:
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/* set class port info for redirection */
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out_perf->mad_hdr.attr_id = IB_PMA_CLASS_PORT_INFO;
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out_perf->mad_hdr.status = IB_MAD_STATUS_REDIRECT;
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memset(poi, 0, sizeof(*poi));
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poi->base_version = 1;
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poi->class_version = 1;
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poi->resp_time_value = 18;
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/* copy local routing information from WC where applicable */
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tcslfl->sl = in_wc->sl;
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poi->redirect_lid =
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sport->saved_attr.lid | in_wc->dlid_path_bits;
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poi->redirect_qp = sport->pma_qp_nr;
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poi->redirect_qkey = IB_QP1_QKEY;
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ehca_query_pkey(ibdev, port_num, in_wc->pkey_index,
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&poi->redirect_pkey);
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/* if request was globally routed, copy route info */
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if (in_grh) {
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struct vertcfl *vertcfl =
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(struct vertcfl *)&in_grh->version_tclass_flow;
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memcpy(poi->redirect_gid, in_grh->dgid.raw,
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sizeof(poi->redirect_gid));
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tcslfl->tc = vertcfl->tc;
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tcslfl->fl = vertcfl->fl;
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} else
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/* else only fill in default GID */
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ehca_query_gid(ibdev, port_num, 0,
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(union ib_gid *)&poi->redirect_gid);
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ehca_dbg(ibdev, "ehca_pma_lid=%x ehca_pma_qp=%x",
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sport->saved_attr.lid, sport->pma_qp_nr);
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break;
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case IB_MGMT_METHOD_GET_RESP:
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return IB_MAD_RESULT_FAILURE;
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default:
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out_perf->mad_hdr.status = IB_MAD_STATUS_UNSUP_METHOD;
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break;
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}
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perf_reply:
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out_perf->mad_hdr.method = IB_MGMT_METHOD_GET_RESP;
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return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
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}
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int ehca_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
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struct ib_wc *in_wc, struct ib_grh *in_grh,
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struct ib_mad *in_mad, struct ib_mad *out_mad)
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{
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int ret;
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if (!port_num || port_num > ibdev->phys_port_cnt || !in_wc)
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return IB_MAD_RESULT_FAILURE;
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/* accept only pma request */
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if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_PERF_MGMT)
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return IB_MAD_RESULT_SUCCESS;
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ehca_dbg(ibdev, "port_num=%x src_qp=%x", port_num, in_wc->src_qp);
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ret = ehca_process_perf(ibdev, port_num, in_wc, in_grh,
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in_mad, out_mad);
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return ret;
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}
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