--- /dev/null
+/*
+ * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
+ * Copyright (c) 2004 Infinicon Corporation. All rights reserved.
+ * Copyright (c) 2004 Intel Corporation. All rights reserved.
+ * Copyright (c) 2004 Topspin Corporation. All rights reserved.
+ * Copyright (c) 2004 Voltaire Corporation. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id: verbs.c 1349 2004-12-16 21:09:43Z roland $
+ */
+
+#include <linux/errno.h>
+#include <linux/err.h>
+
+#include <ib_verbs.h>
+
+/* Protection domains */
+
+struct ib_pd *ib_alloc_pd(struct ib_device *device)
+{
+ struct ib_pd *pd;
+
+ pd = device->alloc_pd(device);
+
+ if (!IS_ERR(pd)) {
+ pd->device = device;
+ atomic_set(&pd->usecnt, 0);
+ }
+
+ return pd;
+}
+EXPORT_SYMBOL(ib_alloc_pd);
+
+int ib_dealloc_pd(struct ib_pd *pd)
+{
+ if (atomic_read(&pd->usecnt))
+ return -EBUSY;
+
+ return pd->device->dealloc_pd(pd);
+}
+EXPORT_SYMBOL(ib_dealloc_pd);
+
+/* Address handles */
+
+struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr)
+{
+ struct ib_ah *ah;
+
+ ah = pd->device->create_ah(pd, ah_attr);
+
+ if (!IS_ERR(ah)) {
+ ah->device = pd->device;
+ ah->pd = pd;
+ atomic_inc(&pd->usecnt);
+ }
+
+ return ah;
+}
+EXPORT_SYMBOL(ib_create_ah);
+
+int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
+{
+ return ah->device->modify_ah ?
+ ah->device->modify_ah(ah, ah_attr) :
+ -ENOSYS;
+}
+EXPORT_SYMBOL(ib_modify_ah);
+
+int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr)
+{
+ return ah->device->query_ah ?
+ ah->device->query_ah(ah, ah_attr) :
+ -ENOSYS;
+}
+EXPORT_SYMBOL(ib_query_ah);
+
+int ib_destroy_ah(struct ib_ah *ah)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ pd = ah->pd;
+ ret = ah->device->destroy_ah(ah);
+ if (!ret)
+ atomic_dec(&pd->usecnt);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_destroy_ah);
+
+/* Queue pairs */
+
+struct ib_qp *ib_create_qp(struct ib_pd *pd,
+ struct ib_qp_init_attr *qp_init_attr)
+{
+ struct ib_qp *qp;
+
+ qp = pd->device->create_qp(pd, qp_init_attr);
+
+ if (!IS_ERR(qp)) {
+ qp->device = pd->device;
+ qp->pd = pd;
+ qp->send_cq = qp_init_attr->send_cq;
+ qp->recv_cq = qp_init_attr->recv_cq;
+ qp->srq = qp_init_attr->srq;
+ qp->event_handler = qp_init_attr->event_handler;
+ qp->qp_context = qp_init_attr->qp_context;
+ qp->qp_type = qp_init_attr->qp_type;
+ atomic_inc(&pd->usecnt);
+ atomic_inc(&qp_init_attr->send_cq->usecnt);
+ atomic_inc(&qp_init_attr->recv_cq->usecnt);
+ if (qp_init_attr->srq)
+ atomic_inc(&qp_init_attr->srq->usecnt);
+ }
+
+ return qp;
+}
+EXPORT_SYMBOL(ib_create_qp);
+
+int ib_modify_qp(struct ib_qp *qp,
+ struct ib_qp_attr *qp_attr,
+ int qp_attr_mask)
+{
+ return qp->device->modify_qp(qp, qp_attr, qp_attr_mask);
+}
+EXPORT_SYMBOL(ib_modify_qp);
+
+int ib_query_qp(struct ib_qp *qp,
+ struct ib_qp_attr *qp_attr,
+ int qp_attr_mask,
+ struct ib_qp_init_attr *qp_init_attr)
+{
+ return qp->device->query_qp ?
+ qp->device->query_qp(qp, qp_attr, qp_attr_mask, qp_init_attr) :
+ -ENOSYS;
+}
+EXPORT_SYMBOL(ib_query_qp);
+
+int ib_destroy_qp(struct ib_qp *qp)
+{
+ struct ib_pd *pd;
+ struct ib_cq *scq, *rcq;
+ struct ib_srq *srq;
+ int ret;
+
+ pd = qp->pd;
+ scq = qp->send_cq;
+ rcq = qp->recv_cq;
+ srq = qp->srq;
+
+ ret = qp->device->destroy_qp(qp);
+ if (!ret) {
+ atomic_dec(&pd->usecnt);
+ atomic_dec(&scq->usecnt);
+ atomic_dec(&rcq->usecnt);
+ if (srq)
+ atomic_dec(&srq->usecnt);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_destroy_qp);
+
+/* Completion queues */
+
+struct ib_cq *ib_create_cq(struct ib_device *device,
+ ib_comp_handler comp_handler,
+ void (*event_handler)(struct ib_event *, void *),
+ void *cq_context, int cqe)
+{
+ struct ib_cq *cq;
+
+ cq = device->create_cq(device, cqe);
+
+ if (!IS_ERR(cq)) {
+ cq->device = device;
+ cq->comp_handler = comp_handler;
+ cq->event_handler = event_handler;
+ cq->cq_context = cq_context;
+ atomic_set(&cq->usecnt, 0);
+ }
+
+ return cq;
+}
+EXPORT_SYMBOL(ib_create_cq);
+
+int ib_destroy_cq(struct ib_cq *cq)
+{
+ if (atomic_read(&cq->usecnt))
+ return -EBUSY;
+
+ return cq->device->destroy_cq(cq);
+}
+EXPORT_SYMBOL(ib_destroy_cq);
+
+int ib_resize_cq(struct ib_cq *cq,
+ int cqe)
+{
+ int ret;
+
+ if (!cq->device->resize_cq)
+ return -ENOSYS;
+
+ ret = cq->device->resize_cq(cq, &cqe);
+ if (!ret)
+ cq->cqe = cqe;
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_resize_cq);
+
+/* Memory regions */
+
+struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
+{
+ struct ib_mr *mr;
+
+ mr = pd->device->get_dma_mr(pd, mr_access_flags);
+
+ if (!IS_ERR(mr)) {
+ mr->device = pd->device;
+ mr->pd = pd;
+ atomic_inc(&pd->usecnt);
+ atomic_set(&mr->usecnt, 0);
+ }
+
+ return mr;
+}
+EXPORT_SYMBOL(ib_get_dma_mr);
+
+struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
+ struct ib_phys_buf *phys_buf_array,
+ int num_phys_buf,
+ int mr_access_flags,
+ u64 *iova_start)
+{
+ struct ib_mr *mr;
+
+ mr = pd->device->reg_phys_mr(pd, phys_buf_array, num_phys_buf,
+ mr_access_flags, iova_start);
+
+ if (!IS_ERR(mr)) {
+ mr->device = pd->device;
+ mr->pd = pd;
+ atomic_inc(&pd->usecnt);
+ atomic_set(&mr->usecnt, 0);
+ }
+
+ return mr;
+}
+EXPORT_SYMBOL(ib_reg_phys_mr);
+
+int ib_rereg_phys_mr(struct ib_mr *mr,
+ int mr_rereg_mask,
+ struct ib_pd *pd,
+ struct ib_phys_buf *phys_buf_array,
+ int num_phys_buf,
+ int mr_access_flags,
+ u64 *iova_start)
+{
+ struct ib_pd *old_pd;
+ int ret;
+
+ if (!mr->device->rereg_phys_mr)
+ return -ENOSYS;
+
+ if (atomic_read(&mr->usecnt))
+ return -EBUSY;
+
+ old_pd = mr->pd;
+
+ ret = mr->device->rereg_phys_mr(mr, mr_rereg_mask, pd,
+ phys_buf_array, num_phys_buf,
+ mr_access_flags, iova_start);
+
+ if (!ret && (mr_rereg_mask & IB_MR_REREG_PD)) {
+ atomic_dec(&old_pd->usecnt);
+ atomic_inc(&pd->usecnt);
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_rereg_phys_mr);
+
+int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
+{
+ return mr->device->query_mr ?
+ mr->device->query_mr(mr, mr_attr) : -ENOSYS;
+}
+EXPORT_SYMBOL(ib_query_mr);
+
+int ib_dereg_mr(struct ib_mr *mr)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ if (atomic_read(&mr->usecnt))
+ return -EBUSY;
+
+ pd = mr->pd;
+ ret = mr->device->dereg_mr(mr);
+ if (!ret)
+ atomic_dec(&pd->usecnt);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_dereg_mr);
+
+/* Memory windows */
+
+struct ib_mw *ib_alloc_mw(struct ib_pd *pd)
+{
+ struct ib_mw *mw;
+
+ if (!pd->device->alloc_mw)
+ return ERR_PTR(-ENOSYS);
+
+ mw = pd->device->alloc_mw(pd);
+ if (!IS_ERR(mw)) {
+ mw->device = pd->device;
+ mw->pd = pd;
+ atomic_inc(&pd->usecnt);
+ }
+
+ return mw;
+}
+EXPORT_SYMBOL(ib_alloc_mw);
+
+int ib_dealloc_mw(struct ib_mw *mw)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ pd = mw->pd;
+ ret = mw->device->dealloc_mw(mw);
+ if (!ret)
+ atomic_dec(&pd->usecnt);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_dealloc_mw);
+
+/* "Fast" memory regions */
+
+struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
+ int mr_access_flags,
+ struct ib_fmr_attr *fmr_attr)
+{
+ struct ib_fmr *fmr;
+
+ if (!pd->device->alloc_fmr)
+ return ERR_PTR(-ENOSYS);
+
+ fmr = pd->device->alloc_fmr(pd, mr_access_flags, fmr_attr);
+ if (!IS_ERR(fmr)) {
+ fmr->device = pd->device;
+ fmr->pd = pd;
+ atomic_inc(&pd->usecnt);
+ }
+
+ return fmr;
+}
+EXPORT_SYMBOL(ib_alloc_fmr);
+
+int ib_unmap_fmr(struct list_head *fmr_list)
+{
+ struct ib_fmr *fmr;
+
+ if (list_empty(fmr_list))
+ return 0;
+
+ fmr = list_entry(fmr_list->next, struct ib_fmr, list);
+ return fmr->device->unmap_fmr(fmr_list);
+}
+EXPORT_SYMBOL(ib_unmap_fmr);
+
+int ib_dealloc_fmr(struct ib_fmr *fmr)
+{
+ struct ib_pd *pd;
+ int ret;
+
+ pd = fmr->pd;
+ ret = fmr->device->dealloc_fmr(fmr);
+ if (!ret)
+ atomic_dec(&pd->usecnt);
+
+ return ret;
+}
+EXPORT_SYMBOL(ib_dealloc_fmr);
+
+/* Multicast groups */
+
+int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
+{
+ return qp->device->attach_mcast ?
+ qp->device->attach_mcast(qp, gid, lid) :
+ -ENOSYS;
+}
+EXPORT_SYMBOL(ib_attach_mcast);
+
+int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
+{
+ return qp->device->detach_mcast ?
+ qp->device->detach_mcast(qp, gid, lid) :
+ -ENOSYS;
+}
+EXPORT_SYMBOL(ib_detach_mcast);
git://git.onelab.eu / linux-2.6.git / blobdiff