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}
112