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authorHeiko J Schick <schickhj.ibm.com>2006-09-22 15:22:22 -0700
committerRoland Dreier <rolandd@cisco.com>2006-09-22 15:22:22 -0700
commitfab97220c9e409a98b1956ba677ddd2dd43b0b95 (patch)
treef4fd0456b758a651eb7e774c550641e177a9b333 /drivers/infiniband/hw/ehca/ehca_mcast.c
parentded7f1a16d50527359be02f8b04f9ba56bc923e6 (diff)
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>
Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_mcast.c')
-rw-r--r--drivers/infiniband/hw/ehca/ehca_mcast.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_mcast.c b/drivers/infiniband/hw/ehca/ehca_mcast.c
new file mode 100644
index 00000000000..32a870660bf
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_mcast.c
@@ -0,0 +1,131 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * mcast functions
+ *
+ * Authors: Khadija Souissi <souissik@de.ibm.com>
+ * Waleri Fomin <fomin@de.ibm.com>
+ * Reinhard Ernst <rernst@de.ibm.com>
+ * Hoang-Nam Nguyen <hnguyen@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"
+
+#define MAX_MC_LID 0xFFFE
+#define MIN_MC_LID 0xC000 /* Multicast limits */
+#define EHCA_VALID_MULTICAST_GID(gid) ((gid)[0] == 0xFF)
+#define EHCA_VALID_MULTICAST_LID(lid) \
+ (((lid) >= MIN_MC_LID) && ((lid) <= MAX_MC_LID))
+
+int ehca_attach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
+ struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca,
+ ib_device);
+ union ib_gid my_gid;
+ u64 subnet_prefix, interface_id, h_ret;
+
+ if (ibqp->qp_type != IB_QPT_UD) {
+ ehca_err(ibqp->device, "invalid qp_type=%x", ibqp->qp_type);
+ return -EINVAL;
+ }
+
+ if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) {
+ ehca_err(ibqp->device, "invalid mulitcast gid");
+ return -EINVAL;
+ } else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) {
+ ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid);
+ return -EINVAL;
+ }
+
+ memcpy(&my_gid.raw, gid->raw, sizeof(union ib_gid));
+
+ subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix);
+ interface_id = be64_to_cpu(my_gid.global.interface_id);
+ h_ret = hipz_h_attach_mcqp(shca->ipz_hca_handle,
+ my_qp->ipz_qp_handle,
+ my_qp->galpas.kernel,
+ lid, subnet_prefix, interface_id);
+ if (h_ret != H_SUCCESS)
+ ehca_err(ibqp->device,
+ "ehca_qp=%p qp_num=%x hipz_h_attach_mcqp() failed "
+ "h_ret=%lx", my_qp, ibqp->qp_num, h_ret);
+
+ return ehca2ib_return_code(h_ret);
+}
+
+int ehca_detach_mcast(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
+{
+ struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
+ struct ehca_shca *shca = container_of(ibqp->pd->device,
+ struct ehca_shca, ib_device);
+ union ib_gid my_gid;
+ u64 subnet_prefix, interface_id, h_ret;
+
+ if (ibqp->qp_type != IB_QPT_UD) {
+ ehca_err(ibqp->device, "invalid qp_type %x", ibqp->qp_type);
+ return -EINVAL;
+ }
+
+ if (!(EHCA_VALID_MULTICAST_GID(gid->raw))) {
+ ehca_err(ibqp->device, "invalid mulitcast gid");
+ return -EINVAL;
+ } else if ((lid < MIN_MC_LID) || (lid > MAX_MC_LID)) {
+ ehca_err(ibqp->device, "invalid mulitcast lid=%x", lid);
+ return -EINVAL;
+ }
+
+ memcpy(&my_gid.raw, gid->raw, sizeof(union ib_gid));
+
+ subnet_prefix = be64_to_cpu(my_gid.global.subnet_prefix);
+ interface_id = be64_to_cpu(my_gid.global.interface_id);
+ h_ret = hipz_h_detach_mcqp(shca->ipz_hca_handle,
+ my_qp->ipz_qp_handle,
+ my_qp->galpas.kernel,
+ lid, subnet_prefix, interface_id);
+ if (h_ret != H_SUCCESS)
+ ehca_err(ibqp->device,
+ "ehca_qp=%p qp_num=%x hipz_h_detach_mcqp() failed "
+ "h_ret=%lx", my_qp, ibqp->qp_num, h_ret);
+
+ return ehca2ib_return_code(h_ret);
+}