1 files changed, 0 insertions, 454 deletions

diff --git a/drivers/infiniband/hw/qib/qib_qp.c b/drivers/infiniband/hw/qib/qib_qp.c
deleted file mode 100644
index 1974ceb9d405..000000000000
--- a/drivers/infiniband/hw/qib/qib_qp.c
+++ /dev/null
@@ -1,454 +0,0 @@
-/*
- * Copyright (c) 2012 - 2019 Intel Corporation.  All rights reserved.
- * Copyright (c) 2006 - 2012 QLogic Corporation.  * All rights reserved.
- * Copyright (c) 2005, 2006 PathScale, Inc. 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.
- */
-
-#include <linux/err.h>
-#include <linux/vmalloc.h>
-#include <rdma/rdma_vt.h>
-#ifdef CONFIG_DEBUG_FS
-#include <linux/seq_file.h>
-#endif
-
-#include "qib.h"
-
-static inline unsigned mk_qpn(struct rvt_qpn_table *qpt,
-			      struct rvt_qpn_map *map, unsigned off)
-{
-	return (map - qpt->map) * RVT_BITS_PER_PAGE + off;
-}
-
-static inline unsigned find_next_offset(struct rvt_qpn_table *qpt,
-					struct rvt_qpn_map *map, unsigned off,
-					unsigned n, u16 qpt_mask)
-{
-	if (qpt_mask) {
-		off++;
-		if (((off & qpt_mask) >> 1) >= n)
-			off = (off | qpt_mask) + 2;
-	} else {
-		off = find_next_zero_bit(map->page, RVT_BITS_PER_PAGE, off);
-	}
-	return off;
-}
-
-const struct rvt_operation_params qib_post_parms[RVT_OPERATION_MAX] = {
-[IB_WR_RDMA_WRITE] = {
-	.length = sizeof(struct ib_rdma_wr),
-	.qpt_support = BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
-},
-
-[IB_WR_RDMA_READ] = {
-	.length = sizeof(struct ib_rdma_wr),
-	.qpt_support = BIT(IB_QPT_RC),
-	.flags = RVT_OPERATION_ATOMIC,
-},
-
-[IB_WR_ATOMIC_CMP_AND_SWP] = {
-	.length = sizeof(struct ib_atomic_wr),
-	.qpt_support = BIT(IB_QPT_RC),
-	.flags = RVT_OPERATION_ATOMIC | RVT_OPERATION_ATOMIC_SGE,
-},
-
-[IB_WR_ATOMIC_FETCH_AND_ADD] = {
-	.length = sizeof(struct ib_atomic_wr),
-	.qpt_support = BIT(IB_QPT_RC),
-	.flags = RVT_OPERATION_ATOMIC | RVT_OPERATION_ATOMIC_SGE,
-},
-
-[IB_WR_RDMA_WRITE_WITH_IMM] = {
-	.length = sizeof(struct ib_rdma_wr),
-	.qpt_support = BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
-},
-
-[IB_WR_SEND] = {
-	.length = sizeof(struct ib_send_wr),
-	.qpt_support = BIT(IB_QPT_UD) | BIT(IB_QPT_SMI) | BIT(IB_QPT_GSI) |
-		       BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
-},
-
-[IB_WR_SEND_WITH_IMM] = {
-	.length = sizeof(struct ib_send_wr),
-	.qpt_support = BIT(IB_QPT_UD) | BIT(IB_QPT_SMI) | BIT(IB_QPT_GSI) |
-		       BIT(IB_QPT_UC) | BIT(IB_QPT_RC),
-},
-
-};
-
-static void get_map_page(struct rvt_qpn_table *qpt, struct rvt_qpn_map *map)
-{
-	unsigned long page = get_zeroed_page(GFP_KERNEL);
-
-	/*
-	 * Free the page if someone raced with us installing it.
-	 */
-
-	spin_lock(&qpt->lock);
-	if (map->page)
-		free_page(page);
-	else
-		map->page = (void *)page;
-	spin_unlock(&qpt->lock);
-}
-
-/*
- * Allocate the next available QPN or
- * zero/one for QP type IB_QPT_SMI/IB_QPT_GSI.
- */
-int qib_alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
-		  enum ib_qp_type type, u32 port)
-{
-	u32 i, offset, max_scan, qpn;
-	struct rvt_qpn_map *map;
-	u32 ret;
-	struct qib_ibdev *verbs_dev = container_of(rdi, struct qib_ibdev, rdi);
-	struct qib_devdata *dd = container_of(verbs_dev, struct qib_devdata,
-					      verbs_dev);
-	u16 qpt_mask = dd->qpn_mask;
-
-	if (type == IB_QPT_SMI || type == IB_QPT_GSI) {
-		u32 n;
-
-		ret = type == IB_QPT_GSI;
-		n = 1 << (ret + 2 * (port - 1));
-		spin_lock(&qpt->lock);
-		if (qpt->flags & n)
-			ret = -EINVAL;
-		else
-			qpt->flags |= n;
-		spin_unlock(&qpt->lock);
-		goto bail;
-	}
-
-	qpn = qpt->last + 2;
-	if (qpn >= RVT_QPN_MAX)
-		qpn = 2;
-	if (qpt_mask && ((qpn & qpt_mask) >> 1) >= dd->n_krcv_queues)
-		qpn = (qpn | qpt_mask) + 2;
-	offset = qpn & RVT_BITS_PER_PAGE_MASK;
-	map = &qpt->map[qpn / RVT_BITS_PER_PAGE];
-	max_scan = qpt->nmaps - !offset;
-	for (i = 0;;) {
-		if (unlikely(!map->page)) {
-			get_map_page(qpt, map);
-			if (unlikely(!map->page))
-				break;
-		}
-		do {
-			if (!test_and_set_bit(offset, map->page)) {
-				qpt->last = qpn;
-				ret = qpn;
-				goto bail;
-			}
-			offset = find_next_offset(qpt, map, offset,
-				dd->n_krcv_queues, qpt_mask);
-			qpn = mk_qpn(qpt, map, offset);
-			/*
-			 * This test differs from alloc_pidmap().
-			 * If find_next_offset() does find a zero
-			 * bit, we don't need to check for QPN
-			 * wrapping around past our starting QPN.
-			 * We just need to be sure we don't loop
-			 * forever.
-			 */
-		} while (offset < RVT_BITS_PER_PAGE && qpn < RVT_QPN_MAX);
-		/*
-		 * In order to keep the number of pages allocated to a
-		 * minimum, we scan the all existing pages before increasing
-		 * the size of the bitmap table.
-		 */
-		if (++i > max_scan) {
-			if (qpt->nmaps == RVT_QPNMAP_ENTRIES)
-				break;
-			map = &qpt->map[qpt->nmaps++];
-			offset = 0;
-		} else if (map < &qpt->map[qpt->nmaps]) {
-			++map;
-			offset = 0;
-		} else {
-			map = &qpt->map[0];
-			offset = 2;
-		}
-		qpn = mk_qpn(qpt, map, offset);
-	}
-
-	ret = -ENOMEM;
-
-bail:
-	return ret;
-}
-
-/*
- * qib_free_all_qps - check for QPs still in use
- */
-unsigned qib_free_all_qps(struct rvt_dev_info *rdi)
-{
-	struct qib_ibdev *verbs_dev = container_of(rdi, struct qib_ibdev, rdi);
-	struct qib_devdata *dd = container_of(verbs_dev, struct qib_devdata,
-					      verbs_dev);
-	unsigned n, qp_inuse = 0;
-
-	for (n = 0; n < dd->num_pports; n++) {
-		struct qib_ibport *ibp = &dd->pport[n].ibport_data;
-
-		rcu_read_lock();
-		if (rcu_dereference(ibp->rvp.qp[0]))
-			qp_inuse++;
-		if (rcu_dereference(ibp->rvp.qp[1]))
-			qp_inuse++;
-		rcu_read_unlock();
-	}
-	return qp_inuse;
-}
-
-void qib_notify_qp_reset(struct rvt_qp *qp)
-{
-	struct qib_qp_priv *priv = qp->priv;
-
-	atomic_set(&priv->s_dma_busy, 0);
-}
-
-void qib_notify_error_qp(struct rvt_qp *qp)
-{
-	struct qib_qp_priv *priv = qp->priv;
-	struct qib_ibdev *dev = to_idev(qp->ibqp.device);
-
-	spin_lock(&dev->rdi.pending_lock);
-	if (!list_empty(&priv->iowait) && !(qp->s_flags & RVT_S_BUSY)) {
-		qp->s_flags &= ~RVT_S_ANY_WAIT_IO;
-		list_del_init(&priv->iowait);
-	}
-	spin_unlock(&dev->rdi.pending_lock);
-
-	if (!(qp->s_flags & RVT_S_BUSY)) {
-		qp->s_hdrwords = 0;
-		if (qp->s_rdma_mr) {
-			rvt_put_mr(qp->s_rdma_mr);
-			qp->s_rdma_mr = NULL;
-		}
-		if (priv->s_tx) {
-			qib_put_txreq(priv->s_tx);
-			priv->s_tx = NULL;
-		}
-	}
-}
-
-static int mtu_to_enum(u32 mtu)
-{
-	int enum_mtu;
-
-	switch (mtu) {
-	case 4096:
-		enum_mtu = IB_MTU_4096;
-		break;
-	case 2048:
-		enum_mtu = IB_MTU_2048;
-		break;
-	case 1024:
-		enum_mtu = IB_MTU_1024;
-		break;
-	case 512:
-		enum_mtu = IB_MTU_512;
-		break;
-	case 256:
-		enum_mtu = IB_MTU_256;
-		break;
-	default:
-		enum_mtu = IB_MTU_2048;
-	}
-	return enum_mtu;
-}
-
-int qib_get_pmtu_from_attr(struct rvt_dev_info *rdi, struct rvt_qp *qp,
-			   struct ib_qp_attr *attr)
-{
-	int mtu, pmtu, pidx = qp->port_num - 1;
-	struct qib_ibdev *verbs_dev = container_of(rdi, struct qib_ibdev, rdi);
-	struct qib_devdata *dd = container_of(verbs_dev, struct qib_devdata,
-					      verbs_dev);
-	mtu = ib_mtu_enum_to_int(attr->path_mtu);
-	if (mtu == -1)
-		return -EINVAL;
-
-	if (mtu > dd->pport[pidx].ibmtu)
-		pmtu = mtu_to_enum(dd->pport[pidx].ibmtu);
-	else
-		pmtu = attr->path_mtu;
-	return pmtu;
-}
-
-int qib_mtu_to_path_mtu(u32 mtu)
-{
-	return mtu_to_enum(mtu);
-}
-
-u32 qib_mtu_from_qp(struct rvt_dev_info *rdi, struct rvt_qp *qp, u32 pmtu)
-{
-	return ib_mtu_enum_to_int(pmtu);
-}
-
-void *qib_qp_priv_alloc(struct rvt_dev_info *rdi, struct rvt_qp *qp)
-{
-	struct qib_qp_priv *priv;
-
-	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-	if (!priv)
-		return ERR_PTR(-ENOMEM);
-	priv->owner = qp;
-
-	priv->s_hdr = kzalloc(sizeof(*priv->s_hdr), GFP_KERNEL);
-	if (!priv->s_hdr) {
-		kfree(priv);
-		return ERR_PTR(-ENOMEM);
-	}
-	init_waitqueue_head(&priv->wait_dma);
-	INIT_WORK(&priv->s_work, _qib_do_send);
-	INIT_LIST_HEAD(&priv->iowait);
-
-	return priv;
-}
-
-void qib_qp_priv_free(struct rvt_dev_info *rdi, struct rvt_qp *qp)
-{
-	struct qib_qp_priv *priv = qp->priv;
-
-	kfree(priv->s_hdr);
-	kfree(priv);
-}
-
-void qib_stop_send_queue(struct rvt_qp *qp)
-{
-	struct qib_qp_priv *priv = qp->priv;
-
-	cancel_work_sync(&priv->s_work);
-}
-
-void qib_quiesce_qp(struct rvt_qp *qp)
-{
-	struct qib_qp_priv *priv = qp->priv;
-
-	wait_event(priv->wait_dma, !atomic_read(&priv->s_dma_busy));
-	if (priv->s_tx) {
-		qib_put_txreq(priv->s_tx);
-		priv->s_tx = NULL;
-	}
-}
-
-void qib_flush_qp_waiters(struct rvt_qp *qp)
-{
-	struct qib_qp_priv *priv = qp->priv;
-	struct qib_ibdev *dev = to_idev(qp->ibqp.device);
-
-	spin_lock(&dev->rdi.pending_lock);
-	if (!list_empty(&priv->iowait))
-		list_del_init(&priv->iowait);
-	spin_unlock(&dev->rdi.pending_lock);
-}
-
-/**
- * qib_check_send_wqe - validate wr/wqe
- * @qp: The qp
- * @wqe: The built wqe
- * @call_send: Determine if the send should be posted or scheduled
- *
- * Returns 0 on success, -EINVAL on failure
- */
-int qib_check_send_wqe(struct rvt_qp *qp,
-		       struct rvt_swqe *wqe, bool *call_send)
-{
-	struct rvt_ah *ah;
-
-	switch (qp->ibqp.qp_type) {
-	case IB_QPT_RC:
-	case IB_QPT_UC:
-		if (wqe->length > 0x80000000U)
-			return -EINVAL;
-		if (wqe->length > qp->pmtu)
-			*call_send = false;
-		break;
-	case IB_QPT_SMI:
-	case IB_QPT_GSI:
-	case IB_QPT_UD:
-		ah = rvt_get_swqe_ah(wqe);
-		if (wqe->length > (1 << ah->log_pmtu))
-			return -EINVAL;
-		/* progress hint */
-		*call_send = true;
-		break;
-	default:
-		break;
-	}
-	return 0;
-}
-
-#ifdef CONFIG_DEBUG_FS
-
-static const char * const qp_type_str[] = {
-	"SMI", "GSI", "RC", "UC", "UD",
-};
-
-/**
- * qib_qp_iter_print - print information to seq_file
- * @s: the seq_file
- * @iter: the iterator
- */
-void qib_qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter)
-{
-	struct rvt_swqe *wqe;
-	struct rvt_qp *qp = iter->qp;
-	struct qib_qp_priv *priv = qp->priv;
-
-	wqe = rvt_get_swqe_ptr(qp, qp->s_last);
-	seq_printf(s,
-		   "N %d QP%u %s %u %u %u f=%x %u %u %u %u %u PSN %x %x %x %x %x (%u %u %u %u %u %u) QP%u LID %x\n",
-		   iter->n,
-		   qp->ibqp.qp_num,
-		   qp_type_str[qp->ibqp.qp_type],
-		   qp->state,
-		   wqe->wr.opcode,
-		   qp->s_hdrwords,
-		   qp->s_flags,
-		   atomic_read(&priv->s_dma_busy),
-		   !list_empty(&priv->iowait),
-		   qp->timeout,
-		   wqe->ssn,
-		   qp->s_lsn,
-		   qp->s_last_psn,
-		   qp->s_psn, qp->s_next_psn,
-		   qp->s_sending_psn, qp->s_sending_hpsn,
-		   qp->s_last, qp->s_acked, qp->s_cur,
-		   qp->s_tail, qp->s_head, qp->s_size,
-		   qp->remote_qpn,
-		   rdma_ah_get_dlid(&qp->remote_ah_attr));
-}
-
-#endif