2 * IBM eServer eHCA Infiniband device driver for Linux on POWER
6 * Authors: Khadija Souissi <souissi@de.ibm.com>
7 * Heiko J Schick <schickhj@de.ibm.com>
9 * Copyright (c) 2005 IBM Corporation
11 * All rights reserved.
13 * This source code is distributed under a dual license of GPL v2.0 and OpenIB
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are met:
21 * Redistributions of source code must retain the above copyright notice, this
22 * list of conditions and the following disclaimer.
24 * Redistributions in binary form must reproduce the above copyright notice,
25 * this list of conditions and the following disclaimer in the documentation
26 * and/or other materials
27 * provided with the distribution.
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
30 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
33 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
36 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
37 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39 * POSSIBILITY OF SUCH DAMAGE.
42 #include <rdma/ib_mad.h>
44 #include "ehca_classes.h"
45 #include "ehca_tools.h"
46 #include "ehca_iverbs.h"
49 #define IB_MAD_STATUS_REDIRECT __constant_htons(0x0002)
50 #define IB_MAD_STATUS_UNSUP_VERSION __constant_htons(0x0004)
51 #define IB_MAD_STATUS_UNSUP_METHOD __constant_htons(0x0008)
53 #define IB_PMA_CLASS_PORT_INFO __constant_htons(0x0001)
56 * ehca_define_sqp - Defines special queue pair 1 (GSI QP). When special queue
57 * pair is created successfully, the corresponding port gets active.
59 * Define Special Queue pair 0 (SMI QP) is still not supported.
61 * @qp_init_attr: Queue pair init attributes with port and queue pair type
64 u64 ehca_define_sqp(struct ehca_shca *shca,
65 struct ehca_qp *ehca_qp,
66 struct ib_qp_init_attr *qp_init_attr)
68 u32 pma_qp_nr, bma_qp_nr;
70 u8 port = qp_init_attr->port_num;
73 shca->sport[port - 1].port_state = IB_PORT_DOWN;
75 switch (qp_init_attr->qp_type) {
77 /* function not supported yet */
80 ret = hipz_h_define_aqp1(shca->ipz_hca_handle,
81 ehca_qp->ipz_qp_handle,
82 ehca_qp->galpas.kernel,
83 (u32) qp_init_attr->port_num,
84 &pma_qp_nr, &bma_qp_nr);
86 if (ret != H_SUCCESS) {
87 ehca_err(&shca->ib_device,
88 "Can't define AQP1 for port %x. h_ret=%li",
92 shca->sport[port - 1].pma_qp_nr = pma_qp_nr;
93 ehca_dbg(&shca->ib_device, "port=%x pma_qp_nr=%x",
97 ehca_err(&shca->ib_device, "invalid qp_type=%x",
98 qp_init_attr->qp_type);
102 if (ehca_nr_ports < 0) /* autodetect mode */
106 shca->sport[port - 1].port_state != IB_PORT_ACTIVE &&
107 counter < ehca_port_act_time;
109 ehca_dbg(&shca->ib_device, "... wait until port %x is active",
111 msleep_interruptible(1000);
114 if (counter == ehca_port_act_time) {
115 ehca_err(&shca->ib_device, "Port %x is not active.", port);
123 struct ib_mad_hdr mad_hdr;
126 } __attribute__ ((packed));
129 static int ehca_process_perf(struct ib_device *ibdev, u8 port_num,
130 struct ib_mad *in_mad, struct ib_mad *out_mad)
132 struct ib_perf *in_perf = (struct ib_perf *)in_mad;
133 struct ib_perf *out_perf = (struct ib_perf *)out_mad;
134 struct ib_class_port_info *poi =
135 (struct ib_class_port_info *)out_perf->data;
136 struct ehca_shca *shca =
137 container_of(ibdev, struct ehca_shca, ib_device);
138 struct ehca_sport *sport = &shca->sport[port_num - 1];
140 ehca_dbg(ibdev, "method=%x", in_perf->mad_hdr.method);
144 if (in_perf->mad_hdr.class_version != 1) {
145 ehca_warn(ibdev, "Unsupported class_version=%x",
146 in_perf->mad_hdr.class_version);
147 out_perf->mad_hdr.status = IB_MAD_STATUS_UNSUP_VERSION;
151 switch (in_perf->mad_hdr.method) {
152 case IB_MGMT_METHOD_GET:
153 case IB_MGMT_METHOD_SET:
154 /* set class port info for redirection */
155 out_perf->mad_hdr.attr_id = IB_PMA_CLASS_PORT_INFO;
156 out_perf->mad_hdr.status = IB_MAD_STATUS_REDIRECT;
157 memset(poi, 0, sizeof(*poi));
158 poi->base_version = 1;
159 poi->class_version = 1;
160 poi->resp_time_value = 18;
161 poi->redirect_lid = sport->saved_attr.lid;
162 poi->redirect_qp = sport->pma_qp_nr;
163 poi->redirect_qkey = IB_QP1_QKEY;
164 poi->redirect_pkey = IB_DEFAULT_PKEY_FULL;
166 ehca_dbg(ibdev, "ehca_pma_lid=%x ehca_pma_qp=%x",
167 sport->saved_attr.lid, sport->pma_qp_nr);
170 case IB_MGMT_METHOD_GET_RESP:
171 return IB_MAD_RESULT_FAILURE;
174 out_perf->mad_hdr.status = IB_MAD_STATUS_UNSUP_METHOD;
179 out_perf->mad_hdr.method = IB_MGMT_METHOD_GET_RESP;
181 return IB_MAD_RESULT_SUCCESS | IB_MAD_RESULT_REPLY;
184 int ehca_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
185 struct ib_wc *in_wc, struct ib_grh *in_grh,
186 struct ib_mad *in_mad,
187 struct ib_mad *out_mad)
191 if (!port_num || port_num > ibdev->phys_port_cnt)
192 return IB_MAD_RESULT_FAILURE;
194 /* accept only pma request */
195 if (in_mad->mad_hdr.mgmt_class != IB_MGMT_CLASS_PERF_MGMT)
196 return IB_MAD_RESULT_SUCCESS;
198 ehca_dbg(ibdev, "port_num=%x src_qp=%x", port_num, in_wc->src_qp);
199 ret = ehca_process_perf(ibdev, port_num, in_mad, out_mad);