IB/ehca: Add driver for IBM eHCA InfiniBand adapters
Add a driver for IBM GX bus InfiniBand adapters, which are usable with
some pSeries/System p systems.
Signed-off-by: Heiko J Schick <schickhj.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/ehca/ehca_sqp.c b/drivers/infiniband/hw/ehca/ehca_sqp.c
new file mode 100644
index 0000000..9f16e9c
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_sqp.c
@@ -0,0 +1,111 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * SQP functions
+ *
+ * Authors: Khadija Souissi <souissi@de.ibm.com>
+ * Heiko J Schick <schickhj@de.ibm.com>
+ *
+ * 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.
+ */
+
+
+#include <linux/module.h>
+#include <linux/err.h>
+#include "ehca_classes.h"
+#include "ehca_tools.h"
+#include "ehca_qes.h"
+#include "ehca_iverbs.h"
+#include "hcp_if.h"
+
+
+/**
+ * ehca_define_sqp - Defines special queue pair 1 (GSI QP). When special queue
+ * pair is created successfully, the corresponding port gets active.
+ *
+ * Define Special Queue pair 0 (SMI QP) is still not supported.
+ *
+ * @qp_init_attr: Queue pair init attributes with port and queue pair type
+ */
+
+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, bma_qp_nr;
+ u64 ret;
+ u8 port = qp_init_attr->port_num;
+ int counter;
+
+ shca->sport[port - 1].port_state = IB_PORT_DOWN;
+
+ switch (qp_init_attr->qp_type) {
+ case IB_QPT_SMI:
+ /* function not supported yet */
+ break;
+ case IB_QPT_GSI:
+ ret = hipz_h_define_aqp1(shca->ipz_hca_handle,
+ ehca_qp->ipz_qp_handle,
+ ehca_qp->galpas.kernel,
+ (u32) qp_init_attr->port_num,
+ &pma_qp_nr, &bma_qp_nr);
+
+ if (ret != H_SUCCESS) {
+ ehca_err(&shca->ib_device,
+ "Can't define AQP1 for port %x. rc=%lx",
+ port, ret);
+ return ret;
+ }
+ break;
+ default:
+ ehca_err(&shca->ib_device, "invalid qp_type=%x",
+ qp_init_attr->qp_type);
+ return H_PARAMETER;
+ }
+
+ for (counter = 0;
+ shca->sport[port - 1].port_state != IB_PORT_ACTIVE &&
+ counter < ehca_port_act_time;
+ counter++) {
+ ehca_dbg(&shca->ib_device, "... wait until port %x is active",
+ port);
+ msleep_interruptible(1000);
+ }
+
+ if (counter == ehca_port_act_time) {
+ ehca_err(&shca->ib_device, "Port %x is not active.", port);
+ return H_HARDWARE;
+ }
+
+ return H_SUCCESS;
+}