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-rw-r--r--drivers/infiniband/hw/ehca/ehca_sqp.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_sqp.c b/drivers/infiniband/hw/ehca/ehca_sqp.c
new file mode 100644
index 000000000000..9f16e9c79394
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_sqp.c
@@ -0,0 +1,111 @@
1/*
2 * IBM eServer eHCA Infiniband device driver for Linux on POWER
3 *
4 * SQP functions
5 *
6 * Authors: Khadija Souissi <souissi@de.ibm.com>
7 * Heiko J Schick <schickhj@de.ibm.com>
8 *
9 * Copyright (c) 2005 IBM Corporation
10 *
11 * All rights reserved.
12 *
13 * This source code is distributed under a dual license of GPL v2.0 and OpenIB
14 * BSD.
15 *
16 * OpenIB BSD License
17 *
18 * Redistribution and use in source and binary forms, with or without
19 * modification, are permitted provided that the following conditions are met:
20 *
21 * Redistributions of source code must retain the above copyright notice, this
22 * list of conditions and the following disclaimer.
23 *
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.
28 *
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.
40 */
41
42
43#include <linux/module.h>
44#include <linux/err.h>
45#include "ehca_classes.h"
46#include "ehca_tools.h"
47#include "ehca_qes.h"
48#include "ehca_iverbs.h"
49#include "hcp_if.h"
50
51
52/**
53 * ehca_define_sqp - Defines special queue pair 1 (GSI QP). When special queue
54 * pair is created successfully, the corresponding port gets active.
55 *
56 * Define Special Queue pair 0 (SMI QP) is still not supported.
57 *
58 * @qp_init_attr: Queue pair init attributes with port and queue pair type
59 */
60
61u64 ehca_define_sqp(struct ehca_shca *shca,
62 struct ehca_qp *ehca_qp,
63 struct ib_qp_init_attr *qp_init_attr)
64{
65 u32 pma_qp_nr, bma_qp_nr;
66 u64 ret;
67 u8 port = qp_init_attr->port_num;
68 int counter;
69
70 shca->sport[port - 1].port_state = IB_PORT_DOWN;
71
72 switch (qp_init_attr->qp_type) {
73 case IB_QPT_SMI:
74 /* function not supported yet */
75 break;
76 case IB_QPT_GSI:
77 ret = hipz_h_define_aqp1(shca->ipz_hca_handle,
78 ehca_qp->ipz_qp_handle,
79 ehca_qp->galpas.kernel,
80 (u32) qp_init_attr->port_num,
81 &pma_qp_nr, &bma_qp_nr);
82
83 if (ret != H_SUCCESS) {
84 ehca_err(&shca->ib_device,
85 "Can't define AQP1 for port %x. rc=%lx",
86 port, ret);
87 return ret;
88 }
89 break;
90 default:
91 ehca_err(&shca->ib_device, "invalid qp_type=%x",
92 qp_init_attr->qp_type);
93 return H_PARAMETER;
94 }
95
96 for (counter = 0;
97 shca->sport[port - 1].port_state != IB_PORT_ACTIVE &&
98 counter < ehca_port_act_time;
99 counter++) {
100 ehca_dbg(&shca->ib_device, "... wait until port %x is active",
101 port);
102 msleep_interruptible(1000);
103 }
104
105 if (counter == ehca_port_act_time) {
106 ehca_err(&shca->ib_device, "Port %x is not active.", port);
107 return H_HARDWARE;
108 }
109
110 return H_SUCCESS;
111}