diff options
Diffstat (limited to 'drivers/staging/rdma/hfi1/verbs_txreq.c')
| -rw-r--r-- | drivers/staging/rdma/hfi1/verbs_txreq.c | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/drivers/staging/rdma/hfi1/verbs_txreq.c b/drivers/staging/rdma/hfi1/verbs_txreq.c deleted file mode 100644 index bc95c4112c61..000000000000 --- a/drivers/staging/rdma/hfi1/verbs_txreq.c +++ /dev/null @@ -1,149 +0,0 @@ -/* - * Copyright(c) 2016 Intel Corporation. - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * 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. - * - Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * 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 "hfi.h" -#include "verbs_txreq.h" -#include "qp.h" -#include "trace.h" - -#define TXREQ_LEN 24 - -void hfi1_put_txreq(struct verbs_txreq *tx) -{ - struct hfi1_ibdev *dev; - struct rvt_qp *qp; - unsigned long flags; - unsigned int seq; - struct hfi1_qp_priv *priv; - - qp = tx->qp; - dev = to_idev(qp->ibqp.device); - - if (tx->mr) - rvt_put_mr(tx->mr); - - sdma_txclean(dd_from_dev(dev), &tx->txreq); - - /* Free verbs_txreq and return to slab cache */ - kmem_cache_free(dev->verbs_txreq_cache, tx); - - do { - seq = read_seqbegin(&dev->iowait_lock); - if (!list_empty(&dev->txwait)) { - struct iowait *wait; - - write_seqlock_irqsave(&dev->iowait_lock, flags); - wait = list_first_entry(&dev->txwait, struct iowait, - list); - qp = iowait_to_qp(wait); - priv = qp->priv; - list_del_init(&priv->s_iowait.list); - /* refcount held until actual wake up */ - write_sequnlock_irqrestore(&dev->iowait_lock, flags); - hfi1_qp_wakeup(qp, RVT_S_WAIT_TX); - break; - } - } while (read_seqretry(&dev->iowait_lock, seq)); -} - -struct verbs_txreq *__get_txreq(struct hfi1_ibdev *dev, - struct rvt_qp *qp) -{ - struct verbs_txreq *tx = ERR_PTR(-EBUSY); - unsigned long flags; - - spin_lock_irqsave(&qp->s_lock, flags); - write_seqlock(&dev->iowait_lock); - if (ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK) { - struct hfi1_qp_priv *priv; - - tx = kmem_cache_alloc(dev->verbs_txreq_cache, GFP_ATOMIC); - if (tx) - goto out; - priv = qp->priv; - if (list_empty(&priv->s_iowait.list)) { - dev->n_txwait++; - qp->s_flags |= RVT_S_WAIT_TX; - list_add_tail(&priv->s_iowait.list, &dev->txwait); - trace_hfi1_qpsleep(qp, RVT_S_WAIT_TX); - atomic_inc(&qp->refcount); - } - qp->s_flags &= ~RVT_S_BUSY; - } -out: - write_sequnlock(&dev->iowait_lock); - spin_unlock_irqrestore(&qp->s_lock, flags); - return tx; -} - -static void verbs_txreq_kmem_cache_ctor(void *obj) -{ - struct verbs_txreq *tx = (struct verbs_txreq *)obj; - - memset(tx, 0, sizeof(*tx)); -} - -int verbs_txreq_init(struct hfi1_ibdev *dev) -{ - char buf[TXREQ_LEN]; - struct hfi1_devdata *dd = dd_from_dev(dev); - - snprintf(buf, sizeof(buf), "hfi1_%u_vtxreq_cache", dd->unit); - dev->verbs_txreq_cache = kmem_cache_create(buf, - sizeof(struct verbs_txreq), - 0, SLAB_HWCACHE_ALIGN, - verbs_txreq_kmem_cache_ctor); - if (!dev->verbs_txreq_cache) - return -ENOMEM; - return 0; -} - -void verbs_txreq_exit(struct hfi1_ibdev *dev) -{ - kmem_cache_destroy(dev->verbs_txreq_cache); - dev->verbs_txreq_cache = NULL; -} |