From: Roland Dreier <[email protected]>
The wait for the port to become active when creating QP 1 seems
bizarre. Why can't we just create QP 1 before the port is active?
What is the issue with creating QP 0? Without QP 0, it's impossible
to run a subnet manager on top of ehca.
---
drivers/infiniband/hw/ehca/ehca_sqp.c | 135 +++++++++++++++++++++++++++++++++
1 files changed, 135 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 0000000..bbad4cb
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_sqp.c
@@ -0,0 +1,135 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * SQP functions
+ *
+ * Authors: Khadija Souissi <[email protected]>
+ * Heiko J Schick <[email protected]>
+ *
+ * Copyright (c) 2005 IBM Corporation
+ *
+ * All rights reserved.
+ *
+ * This source code is distributed under a dual license of GPL v2.0 and OpenIB
+ * BSD.
+ *
+ * OpenIB BSD License
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+ * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $Id: ehca_sqp.c,v 1.35 2006/02/06 10:17:34 schickhj Exp $
+ */
+
+
+#define DEB_PREFIX "e_qp"
+
+#include "ehca_kernel.h"
+#include "ehca_classes.h"
+#include "ehca_tools.h"
+#include "hcp_if.h"
+#include "ehca_qes.h"
+#include "ehca_iverbs.h"
+
+#include <linux/module.h>
+#include <linux/err.h>
+
+extern int ehca_create_aqp1(struct ehca_shca *shca, struct ehca_sport *sport);
+extern int ehca_destroy_aqp1(struct ehca_sport *sport);
+
+extern int ehca_port_act_time;
+
+/**
+ * ehca_define_aqp0 - TODO
+ *
+ * @ehca_qp: : TODO adapter_handle, ipz_qp_handle, galpas.kernel
+ * @qp_init_attr : TODO for port number
+ */
+u64 ehca_define_sqp(struct ehca_shca *shca,
+ struct ehca_qp *ehca_qp,
+ struct ib_qp_init_attr *qp_init_attr)
+{
+
+ u32 pma_qp_nr = 0;
+ u32 bma_qp_nr = 0;
+ u64 ret = H_Success;
+ u8 port = qp_init_attr->port_num;
+ int counter = 0;
+
+ EDEB_EN(7, "port=%x qp_type=%x",
+ port, qp_init_attr->qp_type);
+
+ shca->sport[port - 1].port_state = IB_PORT_DOWN;
+
+ switch (qp_init_attr->qp_type) {
+ case IB_QPT_SMI:
+ /* TODO: function not supported yet */
+ /*
+ ret = hipz_h_define_aqp0(shca->ipz_hca_handle,
+ ehca_qp->ipz_qp_handle,
+ ehca_qp->galpas.kernel,
+ (u32)qp_init_attr->port_num);
+ */
+ break;
+ case IB_QPT_GSI:
+ ret = hipz_h_define_aqp1(shca->ipz_hca_handle,
+ ehca_qp->ipz_qp_handle,
+ ehca_qp->ehca_qp_core.galpas.kernel,
+ (u32) qp_init_attr->port_num,
+ &pma_qp_nr, &bma_qp_nr);
+
+ if (ret != H_Success) {
+ EDEB_ERR(4, "Can't define AQP1 for port %x. rc=%lx",
+ port, ret);
+ goto ehca_define_aqp1;
+ }
+ break;
+ default:
+ ret = H_Parameter;
+ goto ehca_define_aqp1;
+ }
+
+#ifndef EHCA_USERDRIVER
+ while ((shca->sport[port - 1].port_state != IB_PORT_ACTIVE) &&
+ (counter < ehca_port_act_time)) {
+ EDEB(6, "... wait until port %x is active",
+ port);
+ msleep_interruptible(1000);
+ counter++;
+ }
+
+ if (counter == ehca_port_act_time) {
+ EDEB_ERR(4, "Port %x is not active.", port);
+ ret = H_Hardware;
+ }
+#else
+ if (shca->sport[port - 1].port_state != IB_PORT_ACTIVE) {
+ sleep(20);
+ }
+#endif
+
+ ehca_define_aqp1:
+ EDEB_EX(7, "ret=%lx", ret);
+
+ return ret;
+}
-
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