[PATCH 05/13] IB/ehca: avpd
Roland Dreier
rolandd at cisco.com
Fri Aug 18 06:11:01 EST 2006
drivers/infiniband/hw/ehca/ehca_av.c | 303 ++++++++++++++++++++++++++++++++++
drivers/infiniband/hw/ehca/ehca_pd.c | 120 +++++++++++++
2 files changed, 423 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ehca_av.c b/drivers/infiniband/hw/ehca/ehca_av.c
new file mode 100644
index 0000000..fd9fc6d
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_av.c
@@ -0,0 +1,303 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * adress vector functions
+ *
+ * Authors: Hoang-Nam Nguyen <hnguyen at de.ibm.com>
+ * Khadija Souissi <souissik at de.ibm.com>
+ * Reinhard Ernst <rernst at de.ibm.com>
+ * Christoph Raisch <raisch at 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.
+ */
+
+
+#define DEB_PREFIX "ehav"
+
+#include <asm/current.h>
+
+#include "ehca_tools.h"
+#include "ehca_iverbs.h"
+#include "hcp_if.h"
+
+struct ib_ah *ehca_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
+{
+ extern struct ehca_module ehca_module;
+ extern int ehca_static_rate;
+ int ret = 0;
+ struct ehca_av *av = NULL;
+ struct ehca_shca *shca = NULL;
+
+ EHCA_CHECK_PD_P(pd);
+ EHCA_CHECK_ADR_P(ah_attr);
+
+ shca = container_of(pd->device, struct ehca_shca, ib_device);
+
+ EDEB_EN(7, "pd=%p ah_attr=%p", pd, ah_attr);
+
+ av = kmem_cache_alloc(ehca_module.cache_av, SLAB_KERNEL);
+ if (!av) {
+ EDEB_ERR(4, "Out of memory pd=%p ah_attr=%p", pd, ah_attr);
+ ret = -ENOMEM;
+ goto create_ah_exit0;
+ }
+
+ av->av.sl = ah_attr->sl;
+ av->av.dlid = ah_attr->dlid;
+ av->av.slid_path_bits = ah_attr->src_path_bits;
+
+ if (ehca_static_rate < 0) {
+ int ah_mult = ib_rate_to_mult(ah_attr->static_rate);
+ int ehca_mult =
+ ib_rate_to_mult(shca->sport[ah_attr->port_num].rate );
+
+ if (ah_mult >= ehca_mult)
+ av->av.ipd = 0;
+ else
+ av->av.ipd = (ah_mult > 0) ?
+ ((ehca_mult - 1) / ah_mult) : 0;
+ } else
+ av->av.ipd = ehca_static_rate;
+
+ EDEB(7, "IPD av->av.ipd set =%x ah_attr->static_rate=%x "
+ "shca_ib_rate=%x ",av->av.ipd, ah_attr->static_rate,
+ shca->sport[ah_attr->port_num].rate);
+
+ av->av.lnh = ah_attr->ah_flags;
+ av->av.grh.word_0 = EHCA_BMASK_SET(GRH_IPVERSION_MASK, 6);
+ av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_TCLASS_MASK,
+ ah_attr->grh.traffic_class);
+ av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_FLOWLABEL_MASK,
+ ah_attr->grh.flow_label);
+ av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_HOPLIMIT_MASK,
+ ah_attr->grh.hop_limit);
+ av->av.grh.word_0 |= EHCA_BMASK_SET(GRH_NEXTHEADER_MASK, 0x1B);
+ /* set sgid in grh.word_1 */
+ if (ah_attr->ah_flags & IB_AH_GRH) {
+ int rc = 0;
+ struct ib_port_attr port_attr;
+ union ib_gid gid;
+ memset(&port_attr, 0, sizeof(port_attr));
+ rc = ehca_query_port(pd->device, ah_attr->port_num,
+ &port_attr);
+ if (rc) { /* invalid port number */
+ ret = -EINVAL;
+ EDEB_ERR(4, "Invalid port number "
+ "ehca_query_port() returned %x "
+ "pd=%p ah_attr=%p", rc, pd, ah_attr);
+ goto create_ah_exit1;
+ }
+ memset(&gid, 0, sizeof(gid));
+ rc = ehca_query_gid(pd->device,
+ ah_attr->port_num,
+ ah_attr->grh.sgid_index, &gid);
+ if (rc) {
+ ret = -EINVAL;
+ EDEB_ERR(4, "Failed to retrieve sgid "
+ "ehca_query_gid() returned %x "
+ "pd=%p ah_attr=%p", rc, pd, ah_attr);
+ goto create_ah_exit1;
+ }
+ memcpy(&av->av.grh.word_1, &gid, sizeof(gid));
+ }
+ /* for the time being we use a hard coded PMTU of 2048 Bytes */
+ av->av.pmtu = 4;
+
+ /* dgid comes in grh.word_3 */
+ memcpy(&av->av.grh.word_3, &ah_attr->grh.dgid,
+ sizeof(ah_attr->grh.dgid));
+
+ EHCA_REGISTER_AV(device, pd);
+
+ EDEB_EX(7, "pd=%p ah_attr=%p av=%p", pd, ah_attr, av);
+ return &av->ib_ah;
+
+create_ah_exit1:
+ kmem_cache_free(ehca_module.cache_av, av);
+
+create_ah_exit0:
+ EDEB_EX(7, "ret=%x pd=%p ah_attr=%p", ret, pd, ah_attr);
+
+ return ERR_PTR(ret);
+}
+
+int ehca_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
+{
+ struct ehca_av *av = NULL;
+ struct ehca_ud_av new_ehca_av;
+ struct ehca_pd *my_pd = NULL;
+ u32 cur_pid = current->tgid;
+ int ret = 0;
+
+ EHCA_CHECK_AV(ah);
+ EHCA_CHECK_ADR(ah_attr);
+
+ EDEB_EN(7, "ah=%p ah_attr=%p", ah, ah_attr);
+
+ my_pd = container_of(ah->pd, struct ehca_pd, ib_pd);
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ EDEB_ERR(4, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ memset(&new_ehca_av, 0, sizeof(new_ehca_av));
+ new_ehca_av.sl = ah_attr->sl;
+ new_ehca_av.dlid = ah_attr->dlid;
+ new_ehca_av.slid_path_bits = ah_attr->src_path_bits;
+ new_ehca_av.ipd = ah_attr->static_rate;
+ new_ehca_av.lnh = EHCA_BMASK_SET(GRH_FLAG_MASK,
+ (ah_attr->ah_flags & IB_AH_GRH) > 0);
+ new_ehca_av.grh.word_0 = EHCA_BMASK_SET(GRH_TCLASS_MASK,
+ ah_attr->grh.traffic_class);
+ new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_FLOWLABEL_MASK,
+ ah_attr->grh.flow_label);
+ new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_HOPLIMIT_MASK,
+ ah_attr->grh.hop_limit);
+ new_ehca_av.grh.word_0 |= EHCA_BMASK_SET(GRH_NEXTHEADER_MASK, 0x1b);
+
+ /* set sgid in grh.word_1 */
+ if (ah_attr->ah_flags & IB_AH_GRH) {
+ int rc = 0;
+ struct ib_port_attr port_attr;
+ union ib_gid gid;
+ memset(&port_attr, 0, sizeof(port_attr));
+ rc = ehca_query_port(ah->device, ah_attr->port_num,
+ &port_attr);
+ if (rc) { /* invalid port number */
+ ret = -EINVAL;
+ EDEB_ERR(4, "Invalid port number "
+ "ehca_query_port() returned %x "
+ "ah=%p ah_attr=%p port_num=%x",
+ rc, ah, ah_attr, ah_attr->port_num);
+ goto modify_ah_exit1;
+ }
+ memset(&gid, 0, sizeof(gid));
+ rc = ehca_query_gid(ah->device,
+ ah_attr->port_num,
+ ah_attr->grh.sgid_index, &gid);
+ if (rc) {
+ ret = -EINVAL;
+ EDEB_ERR(4, "Failed to retrieve sgid "
+ "ehca_query_gid() returned %x "
+ "ah=%p ah_attr=%p port_num=%x "
+ "sgid_index=%x",
+ rc, ah, ah_attr, ah_attr->port_num,
+ ah_attr->grh.sgid_index);
+ goto modify_ah_exit1;
+ }
+ memcpy(&new_ehca_av.grh.word_1, &gid, sizeof(gid));
+ }
+
+ new_ehca_av.pmtu = 4; /* see also comment in create_ah() */
+
+ memcpy(&new_ehca_av.grh.word_3, &ah_attr->grh.dgid,
+ sizeof(ah_attr->grh.dgid));
+
+ av = container_of(ah, struct ehca_av, ib_ah);
+ av->av = new_ehca_av;
+
+modify_ah_exit1:
+ EDEB_EX(7, "ret=%x ah=%p ah_attr=%p", ret, ah, ah_attr);
+
+ return ret;
+}
+
+int ehca_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
+{
+ int ret = 0;
+ struct ehca_av *av = NULL;
+ struct ehca_pd *my_pd = NULL;
+ u32 cur_pid = current->tgid;
+
+ EHCA_CHECK_AV(ah);
+ EHCA_CHECK_ADR(ah_attr);
+
+ EDEB_EN(7, "ah=%p ah_attr=%p", ah, ah_attr);
+
+ my_pd = container_of(ah->pd, struct ehca_pd, ib_pd);
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ EDEB_ERR(4, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ av = container_of(ah, struct ehca_av, ib_ah);
+ memcpy(&ah_attr->grh.dgid, &av->av.grh.word_3,
+ sizeof(ah_attr->grh.dgid));
+ ah_attr->sl = av->av.sl;
+
+ ah_attr->dlid = av->av.dlid;
+
+ ah_attr->src_path_bits = av->av.slid_path_bits;
+ ah_attr->static_rate = av->av.ipd;
+ ah_attr->ah_flags = EHCA_BMASK_GET(GRH_FLAG_MASK, av->av.lnh);
+ ah_attr->grh.traffic_class = EHCA_BMASK_GET(GRH_TCLASS_MASK,
+ av->av.grh.word_0);
+ ah_attr->grh.hop_limit = EHCA_BMASK_GET(GRH_HOPLIMIT_MASK,
+ av->av.grh.word_0);
+ ah_attr->grh.flow_label = EHCA_BMASK_GET(GRH_FLOWLABEL_MASK,
+ av->av.grh.word_0);
+
+ EDEB_EX(7, "ah=%p ah_attr=%p ret=%x", ah, ah_attr, ret);
+ return ret;
+}
+
+int ehca_destroy_ah(struct ib_ah *ah)
+{
+ extern struct ehca_module ehca_module;
+ struct ehca_pd *my_pd = NULL;
+ u32 cur_pid = current->tgid;
+ int ret = 0;
+
+ EHCA_CHECK_AV(ah);
+ EHCA_DEREGISTER_AV(ah);
+
+ EDEB_EN(7, "ah=%p", ah);
+
+ my_pd = container_of(ah->pd, struct ehca_pd, ib_pd);
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ EDEB_ERR(4, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ kmem_cache_free(ehca_module.cache_av,
+ container_of(ah, struct ehca_av, ib_ah));
+
+ EDEB_EX(7, "ret=%x ah=%p", ret, ah);
+ return ret;
+}
diff --git a/drivers/infiniband/hw/ehca/ehca_pd.c b/drivers/infiniband/hw/ehca/ehca_pd.c
new file mode 100644
index 0000000..afcbe59
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_pd.c
@@ -0,0 +1,120 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * PD functions
+ *
+ * Authors: Christoph Raisch <raisch at 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.
+ */
+
+
+#define DEB_PREFIX "vpd "
+
+#include <asm/current.h>
+
+#include "ehca_tools.h"
+#include "ehca_iverbs.h"
+
+struct ib_pd *ehca_alloc_pd(struct ib_device *device,
+ struct ib_ucontext *context, struct ib_udata *udata)
+{
+ extern struct ehca_module ehca_module;
+ struct ib_pd *mypd = NULL;
+ struct ehca_pd *pd = NULL;
+
+ EDEB_EN(7, "device=%p context=%p udata=%p", device, context, udata);
+
+ EHCA_CHECK_DEVICE_P(device);
+
+ pd = kmem_cache_alloc(ehca_module.cache_pd, SLAB_KERNEL);
+ if (!pd) {
+ EDEB_ERR(4, "ERROR device=%p context=%p pd=%p"
+ " out of memory", device, context, mypd);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ memset(pd, 0, sizeof(struct ehca_pd));
+ pd->ownpid = current->tgid;
+
+ /*
+ * Kernel PD: when device = -1, 0
+ * User PD: when context != -1
+ */
+ if (!context) {
+ /*
+ * Kernel PDs after init reuses always
+ * the one created in ehca_shca_reopen()
+ */
+ struct ehca_shca *shca = container_of(device, struct ehca_shca,
+ ib_device);
+ pd->fw_pd.value = shca->pd->fw_pd.value;
+ } else
+ pd->fw_pd.value = (u64)pd;
+
+ mypd = &pd->ib_pd;
+
+ EHCA_REGISTER_PD(device, pd);
+
+ EDEB_EX(7, "device=%p context=%p pd=%p", device, context, mypd);
+
+ return mypd;
+}
+
+int ehca_dealloc_pd(struct ib_pd *pd)
+{
+ extern struct ehca_module ehca_module;
+ int ret = 0;
+ u32 cur_pid = current->tgid;
+ struct ehca_pd *my_pd = NULL;
+
+ EDEB_EN(7, "pd=%p", pd);
+
+ EHCA_CHECK_PD(pd);
+ my_pd = container_of(pd, struct ehca_pd, ib_pd);
+ if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
+ my_pd->ownpid != cur_pid) {
+ EDEB_ERR(4, "Invalid caller pid=%x ownpid=%x",
+ cur_pid, my_pd->ownpid);
+ return -EINVAL;
+ }
+
+ EHCA_DEREGISTER_PD(pd);
+
+ kmem_cache_free(ehca_module.cache_pd,
+ container_of(pd, struct ehca_pd, ib_pd));
+
+ EDEB_EX(7, "pd=%p", pd);
+
+ return ret;
+}
--
1.4.1
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