IB/ehca: Deprecate driver, move to staging, schedule deletion

The ehca driver is only supported on IBM machines with a custom EBus.
As they have opted to build their newer machines using more industry
standard technology and haven't really been pushing EBus capable
machines for a while, this driver can now safely be moved to the
staging area and scheduled for eventual removal.  This plan was brought
to IBM's attention and received their sign-off.

Cc: alexs@linux.vnet.ibm.com
Cc: hnguyen@de.ibm.com
Cc: raisch@de.ibm.com
Cc: stefan.roscher@de.ibm.com
Signed-off-by: Doug Ledford <dledford@redhat.com>

1 files changed, 0 insertions, 2257 deletions

diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
deleted file mode 100644
index 2e89356c46fa..000000000000
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ /dev/null
@@ -1,2257 +0,0 @@
-/*
- *  IBM eServer eHCA Infiniband device driver for Linux on POWER
- *
- *  QP functions
- *
- *  Authors: Joachim Fenkes <fenkes@de.ibm.com>
- *           Stefan Roscher <stefan.roscher@de.ibm.com>
- *           Waleri Fomin <fomin@de.ibm.com>
- *           Hoang-Nam Nguyen <hnguyen@de.ibm.com>
- *           Reinhard Ernst <rernst@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/slab.h>
-
-#include "ehca_classes.h"
-#include "ehca_tools.h"
-#include "ehca_qes.h"
-#include "ehca_iverbs.h"
-#include "hcp_if.h"
-#include "hipz_fns.h"
-
-static struct kmem_cache *qp_cache;
-
-/*
- * attributes not supported by query qp
- */
-#define QP_ATTR_QUERY_NOT_SUPPORTED (IB_QP_ACCESS_FLAGS       | \
-				     IB_QP_EN_SQD_ASYNC_NOTIFY)
-
-/*
- * ehca (internal) qp state values
- */
-enum ehca_qp_state {
-	EHCA_QPS_RESET = 1,
-	EHCA_QPS_INIT = 2,
-	EHCA_QPS_RTR = 3,
-	EHCA_QPS_RTS = 5,
-	EHCA_QPS_SQD = 6,
-	EHCA_QPS_SQE = 8,
-	EHCA_QPS_ERR = 128
-};
-
-/*
- * qp state transitions as defined by IB Arch Rel 1.1 page 431
- */
-enum ib_qp_statetrans {
-	IB_QPST_ANY2RESET,
-	IB_QPST_ANY2ERR,
-	IB_QPST_RESET2INIT,
-	IB_QPST_INIT2RTR,
-	IB_QPST_INIT2INIT,
-	IB_QPST_RTR2RTS,
-	IB_QPST_RTS2SQD,
-	IB_QPST_RTS2RTS,
-	IB_QPST_SQD2RTS,
-	IB_QPST_SQE2RTS,
-	IB_QPST_SQD2SQD,
-	IB_QPST_MAX	/* nr of transitions, this must be last!!! */
-};
-
-/*
- * ib2ehca_qp_state maps IB to ehca qp_state
- * returns ehca qp state corresponding to given ib qp state
- */
-static inline enum ehca_qp_state ib2ehca_qp_state(enum ib_qp_state ib_qp_state)
-{
-	switch (ib_qp_state) {
-	case IB_QPS_RESET:
-		return EHCA_QPS_RESET;
-	case IB_QPS_INIT:
-		return EHCA_QPS_INIT;
-	case IB_QPS_RTR:
-		return EHCA_QPS_RTR;
-	case IB_QPS_RTS:
-		return EHCA_QPS_RTS;
-	case IB_QPS_SQD:
-		return EHCA_QPS_SQD;
-	case IB_QPS_SQE:
-		return EHCA_QPS_SQE;
-	case IB_QPS_ERR:
-		return EHCA_QPS_ERR;
-	default:
-		ehca_gen_err("invalid ib_qp_state=%x", ib_qp_state);
-		return -EINVAL;
-	}
-}
-
-/*
- * ehca2ib_qp_state maps ehca to IB qp_state
- * returns ib qp state corresponding to given ehca qp state
- */
-static inline enum ib_qp_state ehca2ib_qp_state(enum ehca_qp_state
-						ehca_qp_state)
-{
-	switch (ehca_qp_state) {
-	case EHCA_QPS_RESET:
-		return IB_QPS_RESET;
-	case EHCA_QPS_INIT:
-		return IB_QPS_INIT;
-	case EHCA_QPS_RTR:
-		return IB_QPS_RTR;
-	case EHCA_QPS_RTS:
-		return IB_QPS_RTS;
-	case EHCA_QPS_SQD:
-		return IB_QPS_SQD;
-	case EHCA_QPS_SQE:
-		return IB_QPS_SQE;
-	case EHCA_QPS_ERR:
-		return IB_QPS_ERR;
-	default:
-		ehca_gen_err("invalid ehca_qp_state=%x", ehca_qp_state);
-		return -EINVAL;
-	}
-}
-
-/*
- * ehca_qp_type used as index for req_attr and opt_attr of
- * struct ehca_modqp_statetrans
- */
-enum ehca_qp_type {
-	QPT_RC = 0,
-	QPT_UC = 1,
-	QPT_UD = 2,
-	QPT_SQP = 3,
-	QPT_MAX
-};
-
-/*
- * ib2ehcaqptype maps Ib to ehca qp_type
- * returns ehca qp type corresponding to ib qp type
- */
-static inline enum ehca_qp_type ib2ehcaqptype(enum ib_qp_type ibqptype)
-{
-	switch (ibqptype) {
-	case IB_QPT_SMI:
-	case IB_QPT_GSI:
-		return QPT_SQP;
-	case IB_QPT_RC:
-		return QPT_RC;
-	case IB_QPT_UC:
-		return QPT_UC;
-	case IB_QPT_UD:
-		return QPT_UD;
-	default:
-		ehca_gen_err("Invalid ibqptype=%x", ibqptype);
-		return -EINVAL;
-	}
-}
-
-static inline enum ib_qp_statetrans get_modqp_statetrans(int ib_fromstate,
-							 int ib_tostate)
-{
-	int index = -EINVAL;
-	switch (ib_tostate) {
-	case IB_QPS_RESET:
-		index = IB_QPST_ANY2RESET;
-		break;
-	case IB_QPS_INIT:
-		switch (ib_fromstate) {
-		case IB_QPS_RESET:
-			index = IB_QPST_RESET2INIT;
-			break;
-		case IB_QPS_INIT:
-			index = IB_QPST_INIT2INIT;
-			break;
-		}
-		break;
-	case IB_QPS_RTR:
-		if (ib_fromstate == IB_QPS_INIT)
-			index = IB_QPST_INIT2RTR;
-		break;
-	case IB_QPS_RTS:
-		switch (ib_fromstate) {
-		case IB_QPS_RTR:
-			index = IB_QPST_RTR2RTS;
-			break;
-		case IB_QPS_RTS:
-			index = IB_QPST_RTS2RTS;
-			break;
-		case IB_QPS_SQD:
-			index = IB_QPST_SQD2RTS;
-			break;
-		case IB_QPS_SQE:
-			index = IB_QPST_SQE2RTS;
-			break;
-		}
-		break;
-	case IB_QPS_SQD:
-		if (ib_fromstate == IB_QPS_RTS)
-			index = IB_QPST_RTS2SQD;
-		break;
-	case IB_QPS_SQE:
-		break;
-	case IB_QPS_ERR:
-		index = IB_QPST_ANY2ERR;
-		break;
-	default:
-		break;
-	}
-	return index;
-}
-
-/*
- * ibqptype2servicetype returns hcp service type corresponding to given
- * ib qp type used by create_qp()
- */
-static inline int ibqptype2servicetype(enum ib_qp_type ibqptype)
-{
-	switch (ibqptype) {
-	case IB_QPT_SMI:
-	case IB_QPT_GSI:
-		return ST_UD;
-	case IB_QPT_RC:
-		return ST_RC;
-	case IB_QPT_UC:
-		return ST_UC;
-	case IB_QPT_UD:
-		return ST_UD;
-	case IB_QPT_RAW_IPV6:
-		return -EINVAL;
-	case IB_QPT_RAW_ETHERTYPE:
-		return -EINVAL;
-	default:
-		ehca_gen_err("Invalid ibqptype=%x", ibqptype);
-		return -EINVAL;
-	}
-}
-
-/*
- * init userspace queue info from ipz_queue data
- */
-static inline void queue2resp(struct ipzu_queue_resp *resp,
-			      struct ipz_queue *queue)
-{
-	resp->qe_size = queue->qe_size;
-	resp->act_nr_of_sg = queue->act_nr_of_sg;
-	resp->queue_length = queue->queue_length;
-	resp->pagesize = queue->pagesize;
-	resp->toggle_state = queue->toggle_state;
-	resp->offset = queue->offset;
-}
-
-/*
- * init_qp_queue initializes/constructs r/squeue and registers queue pages.
- */
-static inline int init_qp_queue(struct ehca_shca *shca,
-				struct ehca_pd *pd,
-				struct ehca_qp *my_qp,
-				struct ipz_queue *queue,
-				int q_type,
-				u64 expected_hret,
-				struct ehca_alloc_queue_parms *parms,
-				int wqe_size)
-{
-	int ret, cnt, ipz_rc, nr_q_pages;
-	void *vpage;
-	u64 rpage, h_ret;
-	struct ib_device *ib_dev = &shca->ib_device;
-	struct ipz_adapter_handle ipz_hca_handle = shca->ipz_hca_handle;
-
-	if (!parms->queue_size)
-		return 0;
-
-	if (parms->is_small) {
-		nr_q_pages = 1;
-		ipz_rc = ipz_queue_ctor(pd, queue, nr_q_pages,
-					128 << parms->page_size,
-					wqe_size, parms->act_nr_sges, 1);
-	} else {
-		nr_q_pages = parms->queue_size;
-		ipz_rc = ipz_queue_ctor(pd, queue, nr_q_pages,
-					EHCA_PAGESIZE, wqe_size,
-					parms->act_nr_sges, 0);
-	}
-
-	if (!ipz_rc) {
-		ehca_err(ib_dev, "Cannot allocate page for queue. ipz_rc=%i",
-			 ipz_rc);
-		return -EBUSY;
-	}
-
-	/* register queue pages */
-	for (cnt = 0; cnt < nr_q_pages; cnt++) {
-		vpage = ipz_qpageit_get_inc(queue);
-		if (!vpage) {
-			ehca_err(ib_dev, "ipz_qpageit_get_inc() "
-				 "failed p_vpage= %p", vpage);
-			ret = -EINVAL;
-			goto init_qp_queue1;
-		}
-		rpage = __pa(vpage);
-
-		h_ret = hipz_h_register_rpage_qp(ipz_hca_handle,
-						 my_qp->ipz_qp_handle,
-						 NULL, 0, q_type,
-						 rpage, parms->is_small ? 0 : 1,
-						 my_qp->galpas.kernel);
-		if (cnt == (nr_q_pages - 1)) {	/* last page! */
-			if (h_ret != expected_hret) {
-				ehca_err(ib_dev, "hipz_qp_register_rpage() "
-					 "h_ret=%lli", h_ret);
-				ret = ehca2ib_return_code(h_ret);
-				goto init_qp_queue1;
-			}
-			vpage = ipz_qpageit_get_inc(&my_qp->ipz_rqueue);
-			if (vpage) {
-				ehca_err(ib_dev, "ipz_qpageit_get_inc() "
-					 "should not succeed vpage=%p", vpage);
-				ret = -EINVAL;
-				goto init_qp_queue1;
-			}
-		} else {
-			if (h_ret != H_PAGE_REGISTERED) {
-				ehca_err(ib_dev, "hipz_qp_register_rpage() "
-					 "h_ret=%lli", h_ret);
-				ret = ehca2ib_return_code(h_ret);
-				goto init_qp_queue1;
-			}
-		}
-	}
-
-	ipz_qeit_reset(queue);
-
-	return 0;
-
-init_qp_queue1:
-	ipz_queue_dtor(pd, queue);
-	return ret;
-}
-
-static inline int ehca_calc_wqe_size(int act_nr_sge, int is_llqp)
-{
-	if (is_llqp)
-		return 128 << act_nr_sge;
-	else
-		return offsetof(struct ehca_wqe,
-				u.nud.sg_list[act_nr_sge]);
-}
-
-static void ehca_determine_small_queue(struct ehca_alloc_queue_parms *queue,
-				       int req_nr_sge, int is_llqp)
-{
-	u32 wqe_size, q_size;
-	int act_nr_sge = req_nr_sge;
-
-	if (!is_llqp)
-		/* round up #SGEs so WQE size is a power of 2 */
-		for (act_nr_sge = 4; act_nr_sge <= 252;
-		     act_nr_sge = 4 + 2 * act_nr_sge)
-			if (act_nr_sge >= req_nr_sge)
-				break;
-
-	wqe_size = ehca_calc_wqe_size(act_nr_sge, is_llqp);
-	q_size = wqe_size * (queue->max_wr + 1);
-
-	if (q_size <= 512)
-		queue->page_size = 2;
-	else if (q_size <= 1024)
-		queue->page_size = 3;
-	else
-		queue->page_size = 0;
-
-	queue->is_small = (queue->page_size != 0);
-}
-
-/* needs to be called with cq->spinlock held */
-void ehca_add_to_err_list(struct ehca_qp *qp, int on_sq)
-{
-	struct list_head *list, *node;
-
-	/* TODO: support low latency QPs */
-	if (qp->ext_type == EQPT_LLQP)
-		return;
-
-	if (on_sq) {
-		list = &qp->send_cq->sqp_err_list;
-		node = &qp->sq_err_node;
-	} else {
-		list = &qp->recv_cq->rqp_err_list;
-		node = &qp->rq_err_node;
-	}
-
-	if (list_empty(node))
-		list_add_tail(node, list);
-
-	return;
-}
-
-static void del_from_err_list(struct ehca_cq *cq, struct list_head *node)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&cq->spinlock, flags);
-
-	if (!list_empty(node))
-		list_del_init(node);
-
-	spin_unlock_irqrestore(&cq->spinlock, flags);
-}
-
-static void reset_queue_map(struct ehca_queue_map *qmap)
-{
-	int i;
-
-	qmap->tail = qmap->entries - 1;
-	qmap->left_to_poll = 0;
-	qmap->next_wqe_idx = 0;
-	for (i = 0; i < qmap->entries; i++) {
-		qmap->map[i].reported = 1;
-		qmap->map[i].cqe_req = 0;
-	}
-}
-
-/*
- * Create an ib_qp struct that is either a QP or an SRQ, depending on
- * the value of the is_srq parameter. If init_attr and srq_init_attr share
- * fields, the field out of init_attr is used.
- */
-static struct ehca_qp *internal_create_qp(
-	struct ib_pd *pd,
-	struct ib_qp_init_attr *init_attr,
-	struct ib_srq_init_attr *srq_init_attr,
-	struct ib_udata *udata, int is_srq)
-{
-	struct ehca_qp *my_qp, *my_srq = NULL;
-	struct ehca_pd *my_pd = container_of(pd, struct ehca_pd, ib_pd);
-	struct ehca_shca *shca = container_of(pd->device, struct ehca_shca,
-					      ib_device);
-	struct ib_ucontext *context = NULL;
-	u64 h_ret;
-	int is_llqp = 0, has_srq = 0, is_user = 0;
-	int qp_type, max_send_sge, max_recv_sge, ret;
-
-	/* h_call's out parameters */
-	struct ehca_alloc_qp_parms parms;
-	u32 swqe_size = 0, rwqe_size = 0, ib_qp_num;
-	unsigned long flags;
-
-	if (!atomic_add_unless(&shca->num_qps, 1, shca->max_num_qps)) {
-		ehca_err(pd->device, "Unable to create QP, max number of %i "
-			 "QPs reached.", shca->max_num_qps);
-		ehca_err(pd->device, "To increase the maximum number of QPs "
-			 "use the number_of_qps module parameter.\n");
-		return ERR_PTR(-ENOSPC);
-	}
-
-	if (init_attr->create_flags) {
-		atomic_dec(&shca->num_qps);
-		return ERR_PTR(-EINVAL);
-	}
-
-	memset(&parms, 0, sizeof(parms));
-	qp_type = init_attr->qp_type;
-
-	if (init_attr->sq_sig_type != IB_SIGNAL_REQ_WR &&
-		init_attr->sq_sig_type != IB_SIGNAL_ALL_WR) {
-		ehca_err(pd->device, "init_attr->sg_sig_type=%x not allowed",
-			 init_attr->sq_sig_type);
-		atomic_dec(&shca->num_qps);
-		return ERR_PTR(-EINVAL);
-	}
-
-	/* save LLQP info */
-	if (qp_type & 0x80) {
-		is_llqp = 1;
-		parms.ext_type = EQPT_LLQP;
-		parms.ll_comp_flags = qp_type & LLQP_COMP_MASK;
-	}
-	qp_type &= 0x1F;
-	init_attr->qp_type &= 0x1F;
-
-	/* handle SRQ base QPs */
-	if (init_attr->srq) {
-		my_srq = container_of(init_attr->srq, struct ehca_qp, ib_srq);
-
-		if (qp_type == IB_QPT_UC) {
-			ehca_err(pd->device, "UC with SRQ not supported");
-			atomic_dec(&shca->num_qps);
-			return ERR_PTR(-EINVAL);
-		}
-
-		has_srq = 1;
-		parms.ext_type = EQPT_SRQBASE;
-		parms.srq_qpn = my_srq->real_qp_num;
-	}
-
-	if (is_llqp && has_srq) {
-		ehca_err(pd->device, "LLQPs can't have an SRQ");
-		atomic_dec(&shca->num_qps);
-		return ERR_PTR(-EINVAL);
-	}
-
-	/* handle SRQs */
-	if (is_srq) {
-		parms.ext_type = EQPT_SRQ;
-		parms.srq_limit = srq_init_attr->attr.srq_limit;
-		if (init_attr->cap.max_recv_sge > 3) {
-			ehca_err(pd->device, "no more than three SGEs "
-				 "supported for SRQ  pd=%p  max_sge=%x",
-				 pd, init_attr->cap.max_recv_sge);
-			atomic_dec(&shca->num_qps);
-			return ERR_PTR(-EINVAL);
-		}
-	}
-
-	/* check QP type */
-	if (qp_type != IB_QPT_UD &&
-	    qp_type != IB_QPT_UC &&
-	    qp_type != IB_QPT_RC &&
-	    qp_type != IB_QPT_SMI &&
-	    qp_type != IB_QPT_GSI) {
-		ehca_err(pd->device, "wrong QP Type=%x", qp_type);
-		atomic_dec(&shca->num_qps);
-		return ERR_PTR(-EINVAL);
-	}
-
-	if (is_llqp) {
-		switch (qp_type) {
-		case IB_QPT_RC:
-			if ((init_attr->cap.max_send_wr > 255) ||
-			    (init_attr->cap.max_recv_wr > 255)) {
-				ehca_err(pd->device,
-					 "Invalid Number of max_sq_wr=%x "
-					 "or max_rq_wr=%x for RC LLQP",
-					 init_attr->cap.max_send_wr,
-					 init_attr->cap.max_recv_wr);
-				atomic_dec(&shca->num_qps);
-				return ERR_PTR(-EINVAL);
-			}
-			break;
-		case IB_QPT_UD:
-			if (!EHCA_BMASK_GET(HCA_CAP_UD_LL_QP, shca->hca_cap)) {
-				ehca_err(pd->device, "UD LLQP not supported "
-					 "by this adapter");
-				atomic_dec(&shca->num_qps);
-				return ERR_PTR(-ENOSYS);
-			}
-			if (!(init_attr->cap.max_send_sge <= 5
-			    && init_attr->cap.max_send_sge >= 1
-			    && init_attr->cap.max_recv_sge <= 5
-			    && init_attr->cap.max_recv_sge >= 1)) {
-				ehca_err(pd->device,
-					 "Invalid Number of max_send_sge=%x "
-					 "or max_recv_sge=%x for UD LLQP",
-					 init_attr->cap.max_send_sge,
-					 init_attr->cap.max_recv_sge);
-				atomic_dec(&shca->num_qps);
-				return ERR_PTR(-EINVAL);
-			} else if (init_attr->cap.max_send_wr > 255) {
-				ehca_err(pd->device,
-					 "Invalid Number of "
-					 "max_send_wr=%x for UD QP_TYPE=%x",
-					 init_attr->cap.max_send_wr, qp_type);
-				atomic_dec(&shca->num_qps);
-				return ERR_PTR(-EINVAL);
-			}
-			break;
-		default:
-			ehca_err(pd->device, "unsupported LL QP Type=%x",
-				 qp_type);
-			atomic_dec(&shca->num_qps);
-			return ERR_PTR(-EINVAL);
-		}
-	} else {
-		int max_sge = (qp_type == IB_QPT_UD || qp_type == IB_QPT_SMI
-			       || qp_type == IB_QPT_GSI) ? 250 : 252;
-
-		if (init_attr->cap.max_send_sge > max_sge
-		    || init_attr->cap.max_recv_sge > max_sge) {
-			ehca_err(pd->device, "Invalid number of SGEs requested "
-				 "send_sge=%x recv_sge=%x max_sge=%x",
-				 init_attr->cap.max_send_sge,
-				 init_attr->cap.max_recv_sge, max_sge);
-			atomic_dec(&shca->num_qps);
-			return ERR_PTR(-EINVAL);
-		}
-	}
-
-	my_qp = kmem_cache_zalloc(qp_cache, GFP_KERNEL);
-	if (!my_qp) {
-		ehca_err(pd->device, "pd=%p not enough memory to alloc qp", pd);
-		atomic_dec(&shca->num_qps);
-		return ERR_PTR(-ENOMEM);
-	}
-
-	if (pd->uobject && udata) {
-		is_user = 1;
-		context = pd->uobject->context;
-	}
-
-	atomic_set(&my_qp->nr_events, 0);
-	init_waitqueue_head(&my_qp->wait_completion);
-	spin_lock_init(&my_qp->spinlock_s);
-	spin_lock_init(&my_qp->spinlock_r);
-	my_qp->qp_type = qp_type;
-	my_qp->ext_type = parms.ext_type;
-	my_qp->state = IB_QPS_RESET;
-
-	if (init_attr->recv_cq)
-		my_qp->recv_cq =
-			container_of(init_attr->recv_cq, struct ehca_cq, ib_cq);
-	if (init_attr->send_cq)
-		my_qp->send_cq =
-			container_of(init_attr->send_cq, struct ehca_cq, ib_cq);
-
-	idr_preload(GFP_KERNEL);
-	write_lock_irqsave(&ehca_qp_idr_lock, flags);
-
-	ret = idr_alloc(&ehca_qp_idr, my_qp, 0, 0x2000000, GFP_NOWAIT);
-	if (ret >= 0)
-		my_qp->token = ret;
-
-	write_unlock_irqrestore(&ehca_qp_idr_lock, flags);
-	idr_preload_end();
-	if (ret < 0) {
-		if (ret == -ENOSPC) {
-			ret = -EINVAL;
-			ehca_err(pd->device, "Invalid number of qp");
-		} else {
-			ret = -ENOMEM;
-			ehca_err(pd->device, "Can't allocate new idr entry.");
-		}
-		goto create_qp_exit0;
-	}
-
-	if (has_srq)
-		parms.srq_token = my_qp->token;
-
-	parms.servicetype = ibqptype2servicetype(qp_type);
-	if (parms.servicetype < 0) {
-		ret = -EINVAL;
-		ehca_err(pd->device, "Invalid qp_type=%x", qp_type);
-		goto create_qp_exit1;
-	}
-
-	/* Always signal by WQE so we can hide circ. WQEs */
-	parms.sigtype = HCALL_SIGT_BY_WQE;
-
-	/* UD_AV CIRCUMVENTION */
-	max_send_sge = init_attr->cap.max_send_sge;
-	max_recv_sge = init_attr->cap.max_recv_sge;
-	if (parms.servicetype == ST_UD && !is_llqp) {
-		max_send_sge += 2;
-		max_recv_sge += 2;
-	}
-
-	parms.token = my_qp->token;
-	parms.eq_handle = shca->eq.ipz_eq_handle;
-	parms.pd = my_pd->fw_pd;
-	if (my_qp->send_cq)
-		parms.send_cq_handle = my_qp->send_cq->ipz_cq_handle;
-	if (my_qp->recv_cq)
-		parms.recv_cq_handle = my_qp->recv_cq->ipz_cq_handle;
-
-	parms.squeue.max_wr = init_attr->cap.max_send_wr;
-	parms.rqueue.max_wr = init_attr->cap.max_recv_wr;
-	parms.squeue.max_sge = max_send_sge;
-	parms.rqueue.max_sge = max_recv_sge;
-
-	/* RC QPs need one more SWQE for unsolicited ack circumvention */
-	if (qp_type == IB_QPT_RC)
-		parms.squeue.max_wr++;
-
-	if (EHCA_BMASK_GET(HCA_CAP_MINI_QP, shca->hca_cap)) {
-		if (HAS_SQ(my_qp))
-			ehca_determine_small_queue(
-				&parms.squeue, max_send_sge, is_llqp);
-		if (HAS_RQ(my_qp))
-			ehca_determine_small_queue(
-				&parms.rqueue, max_recv_sge, is_llqp);
-		parms.qp_storage =
-			(parms.squeue.is_small || parms.rqueue.is_small);
-	}
-
-	h_ret = hipz_h_alloc_resource_qp(shca->ipz_hca_handle, &parms, is_user);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(pd->device, "h_alloc_resource_qp() failed h_ret=%lli",
-			 h_ret);
-		ret = ehca2ib_return_code(h_ret);
-		goto create_qp_exit1;
-	}
-
-	ib_qp_num = my_qp->real_qp_num = parms.real_qp_num;
-	my_qp->ipz_qp_handle = parms.qp_handle;
-	my_qp->galpas = parms.galpas;
-
-	swqe_size = ehca_calc_wqe_size(parms.squeue.act_nr_sges, is_llqp);
-	rwqe_size = ehca_calc_wqe_size(parms.rqueue.act_nr_sges, is_llqp);
-
-	switch (qp_type) {
-	case IB_QPT_RC:
-		if (is_llqp) {
-			parms.squeue.act_nr_sges = 1;
-			parms.rqueue.act_nr_sges = 1;
-		}
-		/* hide the extra WQE */
-		parms.squeue.act_nr_wqes--;
-		break;
-	case IB_QPT_UD:
-	case IB_QPT_GSI:
-	case IB_QPT_SMI:
-		/* UD circumvention */
-		if (is_llqp) {
-			parms.squeue.act_nr_sges = 1;
-			parms.rqueue.act_nr_sges = 1;
-		} else {
-			parms.squeue.act_nr_sges -= 2;
-			parms.rqueue.act_nr_sges -= 2;
-		}
-
-		if (IB_QPT_GSI == qp_type || IB_QPT_SMI == qp_type) {
-			parms.squeue.act_nr_wqes = init_attr->cap.max_send_wr;
-			parms.rqueue.act_nr_wqes = init_attr->cap.max_recv_wr;
-			parms.squeue.act_nr_sges = init_attr->cap.max_send_sge;
-			parms.rqueue.act_nr_sges = init_attr->cap.max_recv_sge;
-			ib_qp_num = (qp_type == IB_QPT_SMI) ? 0 : 1;
-		}
-
-		break;
-
-	default:
-		break;
-	}
-
-	/* initialize r/squeue and register queue pages */
-	if (HAS_SQ(my_qp)) {
-		ret = init_qp_queue(
-			shca, my_pd, my_qp, &my_qp->ipz_squeue, 0,
-			HAS_RQ(my_qp) ? H_PAGE_REGISTERED : H_SUCCESS,
-			&parms.squeue, swqe_size);
-		if (ret) {
-			ehca_err(pd->device, "Couldn't initialize squeue "
-				 "and pages ret=%i", ret);
-			goto create_qp_exit2;
-		}
-
-		if (!is_user) {
-			my_qp->sq_map.entries = my_qp->ipz_squeue.queue_length /
-				my_qp->ipz_squeue.qe_size;
-			my_qp->sq_map.map = vmalloc(my_qp->sq_map.entries *
-						    sizeof(struct ehca_qmap_entry));
-			if (!my_qp->sq_map.map) {
-				ehca_err(pd->device, "Couldn't allocate squeue "
-					 "map ret=%i", ret);
-				goto create_qp_exit3;
-			}
-			INIT_LIST_HEAD(&my_qp->sq_err_node);
-			/* to avoid the generation of bogus flush CQEs */
-			reset_queue_map(&my_qp->sq_map);
-		}
-	}
-
-	if (HAS_RQ(my_qp)) {
-		ret = init_qp_queue(
-			shca, my_pd, my_qp, &my_qp->ipz_rqueue, 1,
-			H_SUCCESS, &parms.rqueue, rwqe_size);
-		if (ret) {
-			ehca_err(pd->device, "Couldn't initialize rqueue "
-				 "and pages ret=%i", ret);
-			goto create_qp_exit4;
-		}
-		if (!is_user) {
-			my_qp->rq_map.entries = my_qp->ipz_rqueue.queue_length /
-				my_qp->ipz_rqueue.qe_size;
-			my_qp->rq_map.map = vmalloc(my_qp->rq_map.entries *
-						    sizeof(struct ehca_qmap_entry));
-			if (!my_qp->rq_map.map) {
-				ehca_err(pd->device, "Couldn't allocate squeue "
-					 "map ret=%i", ret);
-				goto create_qp_exit5;
-			}
-			INIT_LIST_HEAD(&my_qp->rq_err_node);
-			/* to avoid the generation of bogus flush CQEs */
-			reset_queue_map(&my_qp->rq_map);
-		}
-	} else if (init_attr->srq && !is_user) {
-		/* this is a base QP, use the queue map of the SRQ */
-		my_qp->rq_map = my_srq->rq_map;
-		INIT_LIST_HEAD(&my_qp->rq_err_node);
-
-		my_qp->ipz_rqueue = my_srq->ipz_rqueue;
-	}
-
-	if (is_srq) {
-		my_qp->ib_srq.pd = &my_pd->ib_pd;
-		my_qp->ib_srq.device = my_pd->ib_pd.device;
-
-		my_qp->ib_srq.srq_context = init_attr->qp_context;
-		my_qp->ib_srq.event_handler = init_attr->event_handler;
-	} else {
-		my_qp->ib_qp.qp_num = ib_qp_num;
-		my_qp->ib_qp.pd = &my_pd->ib_pd;
-		my_qp->ib_qp.device = my_pd->ib_pd.device;
-
-		my_qp->ib_qp.recv_cq = init_attr->recv_cq;
-		my_qp->ib_qp.send_cq = init_attr->send_cq;
-
-		my_qp->ib_qp.qp_type = qp_type;
-		my_qp->ib_qp.srq = init_attr->srq;
-
-		my_qp->ib_qp.qp_context = init_attr->qp_context;
-		my_qp->ib_qp.event_handler = init_attr->event_handler;
-	}
-
-	init_attr->cap.max_inline_data = 0; /* not supported yet */
-	init_attr->cap.max_recv_sge = parms.rqueue.act_nr_sges;
-	init_attr->cap.max_recv_wr = parms.rqueue.act_nr_wqes;
-	init_attr->cap.max_send_sge = parms.squeue.act_nr_sges;
-	init_attr->cap.max_send_wr = parms.squeue.act_nr_wqes;
-	my_qp->init_attr = *init_attr;
-
-	if (qp_type == IB_QPT_SMI || qp_type == IB_QPT_GSI) {
-		shca->sport[init_attr->port_num - 1].ibqp_sqp[qp_type] =
-			&my_qp->ib_qp;
-		if (ehca_nr_ports < 0) {
-			/* alloc array to cache subsequent modify qp parms
-			 * for autodetect mode
-			 */
-			my_qp->mod_qp_parm =
-				kzalloc(EHCA_MOD_QP_PARM_MAX *
-					sizeof(*my_qp->mod_qp_parm),
-					GFP_KERNEL);
-			if (!my_qp->mod_qp_parm) {
-				ehca_err(pd->device,
-					 "Could not alloc mod_qp_parm");
-				goto create_qp_exit5;
-			}
-		}
-	}
-
-	/* NOTE: define_apq0() not supported yet */
-	if (qp_type == IB_QPT_GSI) {
-		h_ret = ehca_define_sqp(shca, my_qp, init_attr);
-		if (h_ret != H_SUCCESS) {
-			kfree(my_qp->mod_qp_parm);
-			my_qp->mod_qp_parm = NULL;
-			/* the QP pointer is no longer valid */
-			shca->sport[init_attr->port_num - 1].ibqp_sqp[qp_type] =
-				NULL;
-			ret = ehca2ib_return_code(h_ret);
-			goto create_qp_exit6;
-		}
-	}
-
-	if (my_qp->send_cq) {
-		ret = ehca_cq_assign_qp(my_qp->send_cq, my_qp);
-		if (ret) {
-			ehca_err(pd->device,
-				 "Couldn't assign qp to send_cq ret=%i", ret);
-			goto create_qp_exit7;
-		}
-	}
-
-	/* copy queues, galpa data to user space */
-	if (context && udata) {
-		struct ehca_create_qp_resp resp;
-		memset(&resp, 0, sizeof(resp));
-
-		resp.qp_num = my_qp->real_qp_num;
-		resp.token = my_qp->token;
-		resp.qp_type = my_qp->qp_type;
-		resp.ext_type = my_qp->ext_type;
-		resp.qkey = my_qp->qkey;
-		resp.real_qp_num = my_qp->real_qp_num;
-
-		if (HAS_SQ(my_qp))
-			queue2resp(&resp.ipz_squeue, &my_qp->ipz_squeue);
-		if (HAS_RQ(my_qp))
-			queue2resp(&resp.ipz_rqueue, &my_qp->ipz_rqueue);
-		resp.fw_handle_ofs = (u32)
-			(my_qp->galpas.user.fw_handle & (PAGE_SIZE - 1));
-
-		if (ib_copy_to_udata(udata, &resp, sizeof resp)) {
-			ehca_err(pd->device, "Copy to udata failed");
-			ret = -EINVAL;
-			goto create_qp_exit8;
-		}
-	}
-
-	return my_qp;
-
-create_qp_exit8:
-	ehca_cq_unassign_qp(my_qp->send_cq, my_qp->real_qp_num);
-
-create_qp_exit7:
-	kfree(my_qp->mod_qp_parm);
-
-create_qp_exit6:
-	if (HAS_RQ(my_qp) && !is_user)
-		vfree(my_qp->rq_map.map);
-
-create_qp_exit5:
-	if (HAS_RQ(my_qp))
-		ipz_queue_dtor(my_pd, &my_qp->ipz_rqueue);
-
-create_qp_exit4:
-	if (HAS_SQ(my_qp) && !is_user)
-		vfree(my_qp->sq_map.map);
-
-create_qp_exit3:
-	if (HAS_SQ(my_qp))
-		ipz_queue_dtor(my_pd, &my_qp->ipz_squeue);
-
-create_qp_exit2:
-	hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp);
-
-create_qp_exit1:
-	write_lock_irqsave(&ehca_qp_idr_lock, flags);
-	idr_remove(&ehca_qp_idr, my_qp->token);
-	write_unlock_irqrestore(&ehca_qp_idr_lock, flags);
-
-create_qp_exit0:
-	kmem_cache_free(qp_cache, my_qp);
-	atomic_dec(&shca->num_qps);
-	return ERR_PTR(ret);
-}
-
-struct ib_qp *ehca_create_qp(struct ib_pd *pd,
-			     struct ib_qp_init_attr *qp_init_attr,
-			     struct ib_udata *udata)
-{
-	struct ehca_qp *ret;
-
-	ret = internal_create_qp(pd, qp_init_attr, NULL, udata, 0);
-	return IS_ERR(ret) ? (struct ib_qp *)ret : &ret->ib_qp;
-}
-
-static int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp,
-			       struct ib_uobject *uobject);
-
-struct ib_srq *ehca_create_srq(struct ib_pd *pd,
-			       struct ib_srq_init_attr *srq_init_attr,
-			       struct ib_udata *udata)
-{
-	struct ib_qp_init_attr qp_init_attr;
-	struct ehca_qp *my_qp;
-	struct ib_srq *ret;
-	struct ehca_shca *shca = container_of(pd->device, struct ehca_shca,
-					      ib_device);
-	struct hcp_modify_qp_control_block *mqpcb;
-	u64 hret, update_mask;
-
-	if (srq_init_attr->srq_type != IB_SRQT_BASIC)
-		return ERR_PTR(-ENOSYS);
-
-	/* For common attributes, internal_create_qp() takes its info
-	 * out of qp_init_attr, so copy all common attrs there.
-	 */
-	memset(&qp_init_attr, 0, sizeof(qp_init_attr));
-	qp_init_attr.event_handler = srq_init_attr->event_handler;
-	qp_init_attr.qp_context = srq_init_attr->srq_context;
-	qp_init_attr.sq_sig_type = IB_SIGNAL_ALL_WR;
-	qp_init_attr.qp_type = IB_QPT_RC;
-	qp_init_attr.cap.max_recv_wr = srq_init_attr->attr.max_wr;
-	qp_init_attr.cap.max_recv_sge = srq_init_attr->attr.max_sge;
-
-	my_qp = internal_create_qp(pd, &qp_init_attr, srq_init_attr, udata, 1);
-	if (IS_ERR(my_qp))
-		return (struct ib_srq *)my_qp;
-
-	/* copy back return values */
-	srq_init_attr->attr.max_wr = qp_init_attr.cap.max_recv_wr;
-	srq_init_attr->attr.max_sge = 3;
-
-	/* drive SRQ into RTR state */
-	mqpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
-	if (!mqpcb) {
-		ehca_err(pd->device, "Could not get zeroed page for mqpcb "
-			 "ehca_qp=%p qp_num=%x ", my_qp, my_qp->real_qp_num);
-		ret = ERR_PTR(-ENOMEM);
-		goto create_srq1;
-	}
-
-	mqpcb->qp_state = EHCA_QPS_INIT;
-	mqpcb->prim_phys_port = 1;
-	update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1);
-	hret = hipz_h_modify_qp(shca->ipz_hca_handle,
-				my_qp->ipz_qp_handle,
-				&my_qp->pf,
-				update_mask,
-				mqpcb, my_qp->galpas.kernel);
-	if (hret != H_SUCCESS) {
-		ehca_err(pd->device, "Could not modify SRQ to INIT "
-			 "ehca_qp=%p qp_num=%x h_ret=%lli",
-			 my_qp, my_qp->real_qp_num, hret);
-		goto create_srq2;
-	}
-
-	mqpcb->qp_enable = 1;
-	update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_ENABLE, 1);
-	hret = hipz_h_modify_qp(shca->ipz_hca_handle,
-				my_qp->ipz_qp_handle,
-				&my_qp->pf,
-				update_mask,
-				mqpcb, my_qp->galpas.kernel);
-	if (hret != H_SUCCESS) {
-		ehca_err(pd->device, "Could not enable SRQ "
-			 "ehca_qp=%p qp_num=%x h_ret=%lli",
-			 my_qp, my_qp->real_qp_num, hret);
-		goto create_srq2;
-	}
-
-	mqpcb->qp_state  = EHCA_QPS_RTR;
-	update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1);
-	hret = hipz_h_modify_qp(shca->ipz_hca_handle,
-				my_qp->ipz_qp_handle,
-				&my_qp->pf,
-				update_mask,
-				mqpcb, my_qp->galpas.kernel);
-	if (hret != H_SUCCESS) {
-		ehca_err(pd->device, "Could not modify SRQ to RTR "
-			 "ehca_qp=%p qp_num=%x h_ret=%lli",
-			 my_qp, my_qp->real_qp_num, hret);
-		goto create_srq2;
-	}
-
-	ehca_free_fw_ctrlblock(mqpcb);
-
-	return &my_qp->ib_srq;
-
-create_srq2:
-	ret = ERR_PTR(ehca2ib_return_code(hret));
-	ehca_free_fw_ctrlblock(mqpcb);
-
-create_srq1:
-	internal_destroy_qp(pd->device, my_qp, my_qp->ib_srq.uobject);
-
-	return ret;
-}
-
-/*
- * prepare_sqe_rts called by internal_modify_qp() at trans sqe -> rts
- * set purge bit of bad wqe and subsequent wqes to avoid reentering sqe
- * returns total number of bad wqes in bad_wqe_cnt
- */
-static int prepare_sqe_rts(struct ehca_qp *my_qp, struct ehca_shca *shca,
-			   int *bad_wqe_cnt)
-{
-	u64 h_ret;
-	struct ipz_queue *squeue;
-	void *bad_send_wqe_p, *bad_send_wqe_v;
-	u64 q_ofs;
-	struct ehca_wqe *wqe;
-	int qp_num = my_qp->ib_qp.qp_num;
-
-	/* get send wqe pointer */
-	h_ret = hipz_h_disable_and_get_wqe(shca->ipz_hca_handle,
-					   my_qp->ipz_qp_handle, &my_qp->pf,
-					   &bad_send_wqe_p, NULL, 2);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(&shca->ib_device, "hipz_h_disable_and_get_wqe() failed"
-			 " ehca_qp=%p qp_num=%x h_ret=%lli",
-			 my_qp, qp_num, h_ret);
-		return ehca2ib_return_code(h_ret);
-	}
-	bad_send_wqe_p = (void *)((u64)bad_send_wqe_p & (~(1L << 63)));
-	ehca_dbg(&shca->ib_device, "qp_num=%x bad_send_wqe_p=%p",
-		 qp_num, bad_send_wqe_p);
-	/* convert wqe pointer to vadr */
-	bad_send_wqe_v = __va((u64)bad_send_wqe_p);
-	if (ehca_debug_level >= 2)
-		ehca_dmp(bad_send_wqe_v, 32, "qp_num=%x bad_wqe", qp_num);
-	squeue = &my_qp->ipz_squeue;
-	if (ipz_queue_abs_to_offset(squeue, (u64)bad_send_wqe_p, &q_ofs)) {
-		ehca_err(&shca->ib_device, "failed to get wqe offset qp_num=%x"
-			 " bad_send_wqe_p=%p", qp_num, bad_send_wqe_p);
-		return -EFAULT;
-	}
-
-	/* loop sets wqe's purge bit */
-	wqe = (struct ehca_wqe *)ipz_qeit_calc(squeue, q_ofs);
-	*bad_wqe_cnt = 0;
-	while (wqe->optype != 0xff && wqe->wqef != 0xff) {
-		if (ehca_debug_level >= 2)
-			ehca_dmp(wqe, 32, "qp_num=%x wqe", qp_num);
-		wqe->nr_of_data_seg = 0; /* suppress data access */
-		wqe->wqef = WQEF_PURGE; /* WQE to be purged */
-		q_ofs = ipz_queue_advance_offset(squeue, q_ofs);
-		wqe = (struct ehca_wqe *)ipz_qeit_calc(squeue, q_ofs);
-		*bad_wqe_cnt = (*bad_wqe_cnt)+1;
-	}
-	/*
-	 * bad wqe will be reprocessed and ignored when pol_cq() is called,
-	 *  i.e. nr of wqes with flush error status is one less
-	 */
-	ehca_dbg(&shca->ib_device, "qp_num=%x flusherr_wqe_cnt=%x",
-		 qp_num, (*bad_wqe_cnt)-1);
-	wqe->wqef = 0;
-
-	return 0;
-}
-
-static int calc_left_cqes(u64 wqe_p, struct ipz_queue *ipz_queue,
-			  struct ehca_queue_map *qmap)
-{
-	void *wqe_v;
-	u64 q_ofs;
-	u32 wqe_idx;
-	unsigned int tail_idx;
-
-	/* convert real to abs address */
-	wqe_p = wqe_p & (~(1UL << 63));
-
-	wqe_v = __va(wqe_p);
-
-	if (ipz_queue_abs_to_offset(ipz_queue, wqe_p, &q_ofs)) {
-		ehca_gen_err("Invalid offset for calculating left cqes "
-				"wqe_p=%#llx wqe_v=%p\n", wqe_p, wqe_v);
-		return -EFAULT;
-	}
-
-	tail_idx = next_index(qmap->tail, qmap->entries);
-	wqe_idx = q_ofs / ipz_queue->qe_size;
-
-	/* check all processed wqes, whether a cqe is requested or not */
-	while (tail_idx != wqe_idx) {
-		if (qmap->map[tail_idx].cqe_req)
-			qmap->left_to_poll++;
-		tail_idx = next_index(tail_idx, qmap->entries);
-	}
-	/* save index in queue, where we have to start flushing */
-	qmap->next_wqe_idx = wqe_idx;
-	return 0;
-}
-
-static int check_for_left_cqes(struct ehca_qp *my_qp, struct ehca_shca *shca)
-{
-	u64 h_ret;
-	void *send_wqe_p, *recv_wqe_p;
-	int ret;
-	unsigned long flags;
-	int qp_num = my_qp->ib_qp.qp_num;
-
-	/* this hcall is not supported on base QPs */
-	if (my_qp->ext_type != EQPT_SRQBASE) {
-		/* get send and receive wqe pointer */
-		h_ret = hipz_h_disable_and_get_wqe(shca->ipz_hca_handle,
-				my_qp->ipz_qp_handle, &my_qp->pf,
-				&send_wqe_p, &recv_wqe_p, 4);
-		if (h_ret != H_SUCCESS) {
-			ehca_err(&shca->ib_device, "disable_and_get_wqe() "
-				 "failed ehca_qp=%p qp_num=%x h_ret=%lli",
-				 my_qp, qp_num, h_ret);
-			return ehca2ib_return_code(h_ret);
-		}
-
-		/*
-		 * acquire lock to ensure that nobody is polling the cq which
-		 * could mean that the qmap->tail pointer is in an
-		 * inconsistent state.
-		 */
-		spin_lock_irqsave(&my_qp->send_cq->spinlock, flags);
-		ret = calc_left_cqes((u64)send_wqe_p, &my_qp->ipz_squeue,
-				&my_qp->sq_map);
-		spin_unlock_irqrestore(&my_qp->send_cq->spinlock, flags);
-		if (ret)
-			return ret;
-
-
-		spin_lock_irqsave(&my_qp->recv_cq->spinlock, flags);
-		ret = calc_left_cqes((u64)recv_wqe_p, &my_qp->ipz_rqueue,
-				&my_qp->rq_map);
-		spin_unlock_irqrestore(&my_qp->recv_cq->spinlock, flags);
-		if (ret)
-			return ret;
-	} else {
-		spin_lock_irqsave(&my_qp->send_cq->spinlock, flags);
-		my_qp->sq_map.left_to_poll = 0;
-		my_qp->sq_map.next_wqe_idx = next_index(my_qp->sq_map.tail,
-							my_qp->sq_map.entries);
-		spin_unlock_irqrestore(&my_qp->send_cq->spinlock, flags);
-
-		spin_lock_irqsave(&my_qp->recv_cq->spinlock, flags);
-		my_qp->rq_map.left_to_poll = 0;
-		my_qp->rq_map.next_wqe_idx = next_index(my_qp->rq_map.tail,
-							my_qp->rq_map.entries);
-		spin_unlock_irqrestore(&my_qp->recv_cq->spinlock, flags);
-	}
-
-	/* this assures flush cqes being generated only for pending wqes */
-	if ((my_qp->sq_map.left_to_poll == 0) &&
-				(my_qp->rq_map.left_to_poll == 0)) {
-		spin_lock_irqsave(&my_qp->send_cq->spinlock, flags);
-		ehca_add_to_err_list(my_qp, 1);
-		spin_unlock_irqrestore(&my_qp->send_cq->spinlock, flags);
-
-		if (HAS_RQ(my_qp)) {
-			spin_lock_irqsave(&my_qp->recv_cq->spinlock, flags);
-			ehca_add_to_err_list(my_qp, 0);
-			spin_unlock_irqrestore(&my_qp->recv_cq->spinlock,
-					flags);
-		}
-	}
-
-	return 0;
-}
-
-/*
- * internal_modify_qp with circumvention to handle aqp0 properly
- * smi_reset2init indicates if this is an internal reset-to-init-call for
- * smi. This flag must always be zero if called from ehca_modify_qp()!
- * This internal func was intorduced to avoid recursion of ehca_modify_qp()!
- */
-static int internal_modify_qp(struct ib_qp *ibqp,
-			      struct ib_qp_attr *attr,
-			      int attr_mask, int smi_reset2init)
-{
-	enum ib_qp_state qp_cur_state, qp_new_state;
-	int cnt, qp_attr_idx, ret = 0;
-	enum ib_qp_statetrans statetrans;
-	struct hcp_modify_qp_control_block *mqpcb;
-	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);
-	u64 update_mask;
-	u64 h_ret;
-	int bad_wqe_cnt = 0;
-	int is_user = 0;
-	int squeue_locked = 0;
-	unsigned long flags = 0;
-
-	/* do query_qp to obtain current attr values */
-	mqpcb = ehca_alloc_fw_ctrlblock(GFP_ATOMIC);
-	if (!mqpcb) {
-		ehca_err(ibqp->device, "Could not get zeroed page for mqpcb "
-			 "ehca_qp=%p qp_num=%x ", my_qp, ibqp->qp_num);
-		return -ENOMEM;
-	}
-
-	h_ret = hipz_h_query_qp(shca->ipz_hca_handle,
-				my_qp->ipz_qp_handle,
-				&my_qp->pf,
-				mqpcb, my_qp->galpas.kernel);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(ibqp->device, "hipz_h_query_qp() failed "
-			 "ehca_qp=%p qp_num=%x h_ret=%lli",
-			 my_qp, ibqp->qp_num, h_ret);
-		ret = ehca2ib_return_code(h_ret);
-		goto modify_qp_exit1;
-	}
-	if (ibqp->uobject)
-		is_user = 1;
-
-	qp_cur_state = ehca2ib_qp_state(mqpcb->qp_state);
-
-	if (qp_cur_state == -EINVAL) {	/* invalid qp state */
-		ret = -EINVAL;
-		ehca_err(ibqp->device, "Invalid current ehca_qp_state=%x "
-			 "ehca_qp=%p qp_num=%x",
-			 mqpcb->qp_state, my_qp, ibqp->qp_num);
-		goto modify_qp_exit1;
-	}
-	/*
-	 * circumvention to set aqp0 initial state to init
-	 * as expected by IB spec
-	 */
-	if (smi_reset2init == 0 &&
-	    ibqp->qp_type == IB_QPT_SMI &&
-	    qp_cur_state == IB_QPS_RESET &&
-	    (attr_mask & IB_QP_STATE) &&
-	    attr->qp_state == IB_QPS_INIT) { /* RESET -> INIT */
-		struct ib_qp_attr smiqp_attr = {
-			.qp_state = IB_QPS_INIT,
-			.port_num = my_qp->init_attr.port_num,
-			.pkey_index = 0,
-			.qkey = 0
-		};
-		int smiqp_attr_mask = IB_QP_STATE | IB_QP_PORT |
-			IB_QP_PKEY_INDEX | IB_QP_QKEY;
-		int smirc = internal_modify_qp(
-			ibqp, &smiqp_attr, smiqp_attr_mask, 1);
-		if (smirc) {
-			ehca_err(ibqp->device, "SMI RESET -> INIT failed. "
-				 "ehca_modify_qp() rc=%i", smirc);
-			ret = H_PARAMETER;
-			goto modify_qp_exit1;
-		}
-		qp_cur_state = IB_QPS_INIT;
-		ehca_dbg(ibqp->device, "SMI RESET -> INIT succeeded");
-	}
-	/* is transmitted current state  equal to "real" current state */
-	if ((attr_mask & IB_QP_CUR_STATE) &&
-	    qp_cur_state != attr->cur_qp_state) {
-		ret = -EINVAL;
-		ehca_err(ibqp->device,
-			 "Invalid IB_QP_CUR_STATE attr->curr_qp_state=%x <>"
-			 " actual cur_qp_state=%x. ehca_qp=%p qp_num=%x",
-			 attr->cur_qp_state, qp_cur_state, my_qp, ibqp->qp_num);
-		goto modify_qp_exit1;
-	}
-
-	ehca_dbg(ibqp->device, "ehca_qp=%p qp_num=%x current qp_state=%x "
-		 "new qp_state=%x attribute_mask=%x",
-		 my_qp, ibqp->qp_num, qp_cur_state, attr->qp_state, attr_mask);
-
-	qp_new_state = attr_mask & IB_QP_STATE ? attr->qp_state : qp_cur_state;
-	if (!smi_reset2init &&
-	    !ib_modify_qp_is_ok(qp_cur_state, qp_new_state, ibqp->qp_type,
-				attr_mask, IB_LINK_LAYER_UNSPECIFIED)) {
-		ret = -EINVAL;
-		ehca_err(ibqp->device,
-			 "Invalid qp transition new_state=%x cur_state=%x "
-			 "ehca_qp=%p qp_num=%x attr_mask=%x", qp_new_state,
-			 qp_cur_state, my_qp, ibqp->qp_num, attr_mask);
-		goto modify_qp_exit1;
-	}
-
-	mqpcb->qp_state = ib2ehca_qp_state(qp_new_state);
-	if (mqpcb->qp_state)
-		update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_STATE, 1);
-	else {
-		ret = -EINVAL;
-		ehca_err(ibqp->device, "Invalid new qp state=%x "
-			 "ehca_qp=%p qp_num=%x",
-			 qp_new_state, my_qp, ibqp->qp_num);
-		goto modify_qp_exit1;
-	}
-
-	/* retrieve state transition struct to get req and opt attrs */
-	statetrans = get_modqp_statetrans(qp_cur_state, qp_new_state);
-	if (statetrans < 0) {
-		ret = -EINVAL;
-		ehca_err(ibqp->device, "<INVALID STATE CHANGE> qp_cur_state=%x "
-			 "new_qp_state=%x State_xsition=%x ehca_qp=%p "
-			 "qp_num=%x", qp_cur_state, qp_new_state,
-			 statetrans, my_qp, ibqp->qp_num);
-		goto modify_qp_exit1;
-	}
-
-	qp_attr_idx = ib2ehcaqptype(ibqp->qp_type);
-
-	if (qp_attr_idx < 0) {
-		ret = qp_attr_idx;
-		ehca_err(ibqp->device,
-			 "Invalid QP type=%x ehca_qp=%p qp_num=%x",
-			 ibqp->qp_type, my_qp, ibqp->qp_num);
-		goto modify_qp_exit1;
-	}
-
-	ehca_dbg(ibqp->device,
-		 "ehca_qp=%p qp_num=%x <VALID STATE CHANGE> qp_state_xsit=%x",
-		 my_qp, ibqp->qp_num, statetrans);
-
-	/* eHCA2 rev2 and higher require the SEND_GRH_FLAG to be set
-	 * in non-LL UD QPs.
-	 */
-	if ((my_qp->qp_type == IB_QPT_UD) &&
-	    (my_qp->ext_type != EQPT_LLQP) &&
-	    (statetrans == IB_QPST_INIT2RTR) &&
-	    (shca->hw_level >= 0x22)) {
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG, 1);
-		mqpcb->send_grh_flag = 1;
-	}
-
-	/* sqe -> rts: set purge bit of bad wqe before actual trans */
-	if ((my_qp->qp_type == IB_QPT_UD ||
-	     my_qp->qp_type == IB_QPT_GSI ||
-	     my_qp->qp_type == IB_QPT_SMI) &&
-	    statetrans == IB_QPST_SQE2RTS) {
-		/* mark next free wqe if kernel */
-		if (!ibqp->uobject) {
-			struct ehca_wqe *wqe;
-			/* lock send queue */
-			spin_lock_irqsave(&my_qp->spinlock_s, flags);
-			squeue_locked = 1;
-			/* mark next free wqe */
-			wqe = (struct ehca_wqe *)
-				ipz_qeit_get(&my_qp->ipz_squeue);
-			wqe->optype = wqe->wqef = 0xff;
-			ehca_dbg(ibqp->device, "qp_num=%x next_free_wqe=%p",
-				 ibqp->qp_num, wqe);
-		}
-		ret = prepare_sqe_rts(my_qp, shca, &bad_wqe_cnt);
-		if (ret) {
-			ehca_err(ibqp->device, "prepare_sqe_rts() failed "
-				 "ehca_qp=%p qp_num=%x ret=%i",
-				 my_qp, ibqp->qp_num, ret);
-			goto modify_qp_exit2;
-		}
-	}
-
-	/*
-	 * enable RDMA_Atomic_Control if reset->init und reliable con
-	 * this is necessary since gen2 does not provide that flag,
-	 * but pHyp requires it
-	 */
-	if (statetrans == IB_QPST_RESET2INIT &&
-	    (ibqp->qp_type == IB_QPT_RC || ibqp->qp_type == IB_QPT_UC)) {
-		mqpcb->rdma_atomic_ctrl = 3;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RDMA_ATOMIC_CTRL, 1);
-	}
-	/* circ. pHyp requires #RDMA/Atomic Resp Res for UC INIT -> RTR */
-	if (statetrans == IB_QPST_INIT2RTR &&
-	    (ibqp->qp_type == IB_QPT_UC) &&
-	    !(attr_mask & IB_QP_MAX_DEST_RD_ATOMIC)) {
-		mqpcb->rdma_nr_atomic_resp_res = 1; /* default to 1 */
-		update_mask |=
-			EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1);
-	}
-
-	if (attr_mask & IB_QP_PKEY_INDEX) {
-		if (attr->pkey_index >= 16) {
-			ret = -EINVAL;
-			ehca_err(ibqp->device, "Invalid pkey_index=%x. "
-				 "ehca_qp=%p qp_num=%x max_pkey_index=f",
-				 attr->pkey_index, my_qp, ibqp->qp_num);
-			goto modify_qp_exit2;
-		}
-		mqpcb->prim_p_key_idx = attr->pkey_index;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_P_KEY_IDX, 1);
-	}
-	if (attr_mask & IB_QP_PORT) {
-		struct ehca_sport *sport;
-		struct ehca_qp *aqp1;
-		if (attr->port_num < 1 || attr->port_num > shca->num_ports) {
-			ret = -EINVAL;
-			ehca_err(ibqp->device, "Invalid port=%x. "
-				 "ehca_qp=%p qp_num=%x num_ports=%x",
-				 attr->port_num, my_qp, ibqp->qp_num,
-				 shca->num_ports);
-			goto modify_qp_exit2;
-		}
-		sport = &shca->sport[attr->port_num - 1];
-		if (!sport->ibqp_sqp[IB_QPT_GSI]) {
-			/* should not occur */
-			ret = -EFAULT;
-			ehca_err(ibqp->device, "AQP1 was not created for "
-				 "port=%x", attr->port_num);
-			goto modify_qp_exit2;
-		}
-		aqp1 = container_of(sport->ibqp_sqp[IB_QPT_GSI],
-				    struct ehca_qp, ib_qp);
-		if (ibqp->qp_type != IB_QPT_GSI &&
-		    ibqp->qp_type != IB_QPT_SMI &&
-		    aqp1->mod_qp_parm) {
-			/*
-			 * firmware will reject this modify_qp() because
-			 * port is not activated/initialized fully
-			 */
-			ret = -EFAULT;
-			ehca_warn(ibqp->device, "Couldn't modify qp port=%x: "
-				  "either port is being activated (try again) "
-				  "or cabling issue", attr->port_num);
-			goto modify_qp_exit2;
-		}
-		mqpcb->prim_phys_port = attr->port_num;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PRIM_PHYS_PORT, 1);
-	}
-	if (attr_mask & IB_QP_QKEY) {
-		mqpcb->qkey = attr->qkey;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_QKEY, 1);
-	}
-	if (attr_mask & IB_QP_AV) {
-		mqpcb->dlid = attr->ah_attr.dlid;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DLID, 1);
-		mqpcb->source_path_bits = attr->ah_attr.src_path_bits;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS, 1);
-		mqpcb->service_level = attr->ah_attr.sl;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL, 1);
-
-		if (ehca_calc_ipd(shca, mqpcb->prim_phys_port,
-				  attr->ah_attr.static_rate,
-				  &mqpcb->max_static_rate)) {
-			ret = -EINVAL;
-			goto modify_qp_exit2;
-		}
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE, 1);
-
-		/*
-		 * Always supply the GRH flag, even if it's zero, to give the
-		 * hypervisor a clear "yes" or "no" instead of a "perhaps"
-		 */
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG, 1);
-
-		/*
-		 * only if GRH is TRUE we might consider SOURCE_GID_IDX
-		 * and DEST_GID otherwise phype will return H_ATTR_PARM!!!
-		 */
-		if (attr->ah_attr.ah_flags == IB_AH_GRH) {
-			mqpcb->send_grh_flag = 1;
-
-			mqpcb->source_gid_idx = attr->ah_attr.grh.sgid_index;
-			update_mask |=
-				EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX, 1);
-
-			for (cnt = 0; cnt < 16; cnt++)
-				mqpcb->dest_gid.byte[cnt] =
-					attr->ah_attr.grh.dgid.raw[cnt];
-
-			update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_GID, 1);
-			mqpcb->flow_label = attr->ah_attr.grh.flow_label;
-			update_mask |= EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL, 1);
-			mqpcb->hop_limit = attr->ah_attr.grh.hop_limit;
-			update_mask |= EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT, 1);
-			mqpcb->traffic_class = attr->ah_attr.grh.traffic_class;
-			update_mask |=
-				EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS, 1);
-		}
-	}
-
-	if (attr_mask & IB_QP_PATH_MTU) {
-		/* store ld(MTU) */
-		my_qp->mtu_shift = attr->path_mtu + 7;
-		mqpcb->path_mtu = attr->path_mtu;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_PATH_MTU, 1);
-	}
-	if (attr_mask & IB_QP_TIMEOUT) {
-		mqpcb->timeout = attr->timeout;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_TIMEOUT, 1);
-	}
-	if (attr_mask & IB_QP_RETRY_CNT) {
-		mqpcb->retry_count = attr->retry_cnt;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RETRY_COUNT, 1);
-	}
-	if (attr_mask & IB_QP_RNR_RETRY) {
-		mqpcb->rnr_retry_count = attr->rnr_retry;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RNR_RETRY_COUNT, 1);
-	}
-	if (attr_mask & IB_QP_RQ_PSN) {
-		mqpcb->receive_psn = attr->rq_psn;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_RECEIVE_PSN, 1);
-	}
-	if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
-		mqpcb->rdma_nr_atomic_resp_res = attr->max_dest_rd_atomic < 3 ?
-			attr->max_dest_rd_atomic : 2;
-		update_mask |=
-			EHCA_BMASK_SET(MQPCB_MASK_RDMA_NR_ATOMIC_RESP_RES, 1);
-	}
-	if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
-		mqpcb->rdma_atomic_outst_dest_qp = attr->max_rd_atomic < 3 ?
-			attr->max_rd_atomic : 2;
-		update_mask |=
-			EHCA_BMASK_SET
-			(MQPCB_MASK_RDMA_ATOMIC_OUTST_DEST_QP, 1);
-	}
-	if (attr_mask & IB_QP_ALT_PATH) {
-		if (attr->alt_port_num < 1
-		    || attr->alt_port_num > shca->num_ports) {
-			ret = -EINVAL;
-			ehca_err(ibqp->device, "Invalid alt_port=%x. "
-				 "ehca_qp=%p qp_num=%x num_ports=%x",
-				 attr->alt_port_num, my_qp, ibqp->qp_num,
-				 shca->num_ports);
-			goto modify_qp_exit2;
-		}
-		mqpcb->alt_phys_port = attr->alt_port_num;
-
-		if (attr->alt_pkey_index >= 16) {
-			ret = -EINVAL;
-			ehca_err(ibqp->device, "Invalid alt_pkey_index=%x. "
-				 "ehca_qp=%p qp_num=%x max_pkey_index=f",
-				 attr->pkey_index, my_qp, ibqp->qp_num);
-			goto modify_qp_exit2;
-		}
-		mqpcb->alt_p_key_idx = attr->alt_pkey_index;
-
-		mqpcb->timeout_al = attr->alt_timeout;
-		mqpcb->dlid_al = attr->alt_ah_attr.dlid;
-		mqpcb->source_path_bits_al = attr->alt_ah_attr.src_path_bits;
-		mqpcb->service_level_al = attr->alt_ah_attr.sl;
-
-		if (ehca_calc_ipd(shca, mqpcb->alt_phys_port,
-				  attr->alt_ah_attr.static_rate,
-				  &mqpcb->max_static_rate_al)) {
-			ret = -EINVAL;
-			goto modify_qp_exit2;
-		}
-
-		/* OpenIB doesn't support alternate retry counts - copy them */
-		mqpcb->retry_count_al = mqpcb->retry_count;
-		mqpcb->rnr_retry_count_al = mqpcb->rnr_retry_count;
-
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_ALT_PHYS_PORT, 1)
-			| EHCA_BMASK_SET(MQPCB_MASK_ALT_P_KEY_IDX, 1)
-			| EHCA_BMASK_SET(MQPCB_MASK_TIMEOUT_AL, 1)
-			| EHCA_BMASK_SET(MQPCB_MASK_DLID_AL, 1)
-			| EHCA_BMASK_SET(MQPCB_MASK_SOURCE_PATH_BITS_AL, 1)
-			| EHCA_BMASK_SET(MQPCB_MASK_SERVICE_LEVEL_AL, 1)
-			| EHCA_BMASK_SET(MQPCB_MASK_MAX_STATIC_RATE_AL, 1)
-			| EHCA_BMASK_SET(MQPCB_MASK_RETRY_COUNT_AL, 1)
-			| EHCA_BMASK_SET(MQPCB_MASK_RNR_RETRY_COUNT_AL, 1);
-
-		/*
-		 * Always supply the GRH flag, even if it's zero, to give the
-		 * hypervisor a clear "yes" or "no" instead of a "perhaps"
-		 */
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG_AL, 1);
-
-		/*
-		 * only if GRH is TRUE we might consider SOURCE_GID_IDX
-		 * and DEST_GID otherwise phype will return H_ATTR_PARM!!!
-		 */
-		if (attr->alt_ah_attr.ah_flags == IB_AH_GRH) {
-			mqpcb->send_grh_flag_al = 1;
-
-			for (cnt = 0; cnt < 16; cnt++)
-				mqpcb->dest_gid_al.byte[cnt] =
-					attr->alt_ah_attr.grh.dgid.raw[cnt];
-			mqpcb->source_gid_idx_al =
-				attr->alt_ah_attr.grh.sgid_index;
-			mqpcb->flow_label_al = attr->alt_ah_attr.grh.flow_label;
-			mqpcb->hop_limit_al = attr->alt_ah_attr.grh.hop_limit;
-			mqpcb->traffic_class_al =
-				attr->alt_ah_attr.grh.traffic_class;
-
-			update_mask |=
-				EHCA_BMASK_SET(MQPCB_MASK_SOURCE_GID_IDX_AL, 1)
-				| EHCA_BMASK_SET(MQPCB_MASK_DEST_GID_AL, 1)
-				| EHCA_BMASK_SET(MQPCB_MASK_FLOW_LABEL_AL, 1)
-				| EHCA_BMASK_SET(MQPCB_MASK_HOP_LIMIT_AL, 1) |
-				EHCA_BMASK_SET(MQPCB_MASK_TRAFFIC_CLASS_AL, 1);
-		}
-	}
-
-	if (attr_mask & IB_QP_MIN_RNR_TIMER) {
-		mqpcb->min_rnr_nak_timer_field = attr->min_rnr_timer;
-		update_mask |=
-			EHCA_BMASK_SET(MQPCB_MASK_MIN_RNR_NAK_TIMER_FIELD, 1);
-	}
-
-	if (attr_mask & IB_QP_SQ_PSN) {
-		mqpcb->send_psn = attr->sq_psn;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_PSN, 1);
-	}
-
-	if (attr_mask & IB_QP_DEST_QPN) {
-		mqpcb->dest_qp_nr = attr->dest_qp_num;
-		update_mask |= EHCA_BMASK_SET(MQPCB_MASK_DEST_QP_NR, 1);
-	}
-
-	if (attr_mask & IB_QP_PATH_MIG_STATE) {
-		if (attr->path_mig_state != IB_MIG_REARM
-		    && attr->path_mig_state != IB_MIG_MIGRATED) {
-			ret = -EINVAL;
-			ehca_err(ibqp->device, "Invalid mig_state=%x",
-				 attr->path_mig_state);
-			goto modify_qp_exit2;
-		}
-		mqpcb->path_migration_state = attr->path_mig_state + 1;
-		if (attr->path_mig_state == IB_MIG_REARM)
-			my_qp->mig_armed = 1;
-		update_mask |=
-			EHCA_BMASK_SET(MQPCB_MASK_PATH_MIGRATION_STATE, 1);
-	}
-
-	if (attr_mask & IB_QP_CAP) {
-		mqpcb->max_nr_outst_send_wr = attr->cap.max_send_wr+1;
-		update_mask |=
-			EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_SEND_WR, 1);
-		mqpcb->max_nr_outst_recv_wr = attr->cap.max_recv_wr+1;
-		update_mask |=
-			EHCA_BMASK_SET(MQPCB_MASK_MAX_NR_OUTST_RECV_WR, 1);
-		/* no support for max_send/recv_sge yet */
-	}
-
-	if (ehca_debug_level >= 2)
-		ehca_dmp(mqpcb, 4*70, "qp_num=%x", ibqp->qp_num);
-
-	h_ret = hipz_h_modify_qp(shca->ipz_hca_handle,
-				 my_qp->ipz_qp_handle,
-				 &my_qp->pf,
-				 update_mask,
-				 mqpcb, my_qp->galpas.kernel);
-
-	if (h_ret != H_SUCCESS) {
-		ret = ehca2ib_return_code(h_ret);
-		ehca_err(ibqp->device, "hipz_h_modify_qp() failed h_ret=%lli "
-			 "ehca_qp=%p qp_num=%x", h_ret, my_qp, ibqp->qp_num);
-		goto modify_qp_exit2;
-	}
-
-	if ((my_qp->qp_type == IB_QPT_UD ||
-	     my_qp->qp_type == IB_QPT_GSI ||
-	     my_qp->qp_type == IB_QPT_SMI) &&
-	    statetrans == IB_QPST_SQE2RTS) {
-		/* doorbell to reprocessing wqes */
-		iosync(); /* serialize GAL register access */
-		hipz_update_sqa(my_qp, bad_wqe_cnt-1);
-		ehca_gen_dbg("doorbell for %x wqes", bad_wqe_cnt);
-	}
-
-	if (statetrans == IB_QPST_RESET2INIT ||
-	    statetrans == IB_QPST_INIT2INIT) {
-		mqpcb->qp_enable = 1;
-		mqpcb->qp_state = EHCA_QPS_INIT;
-		update_mask = 0;
-		update_mask = EHCA_BMASK_SET(MQPCB_MASK_QP_ENABLE, 1);
-
-		h_ret = hipz_h_modify_qp(shca->ipz_hca_handle,
-					 my_qp->ipz_qp_handle,
-					 &my_qp->pf,
-					 update_mask,
-					 mqpcb,
-					 my_qp->galpas.kernel);
-
-		if (h_ret != H_SUCCESS) {
-			ret = ehca2ib_return_code(h_ret);
-			ehca_err(ibqp->device, "ENABLE in context of "
-				 "RESET_2_INIT failed! Maybe you didn't get "
-				 "a LID h_ret=%lli ehca_qp=%p qp_num=%x",
-				 h_ret, my_qp, ibqp->qp_num);
-			goto modify_qp_exit2;
-		}
-	}
-	if ((qp_new_state == IB_QPS_ERR) && (qp_cur_state != IB_QPS_ERR)
-	    && !is_user) {
-		ret = check_for_left_cqes(my_qp, shca);
-		if (ret)
-			goto modify_qp_exit2;
-	}
-
-	if (statetrans == IB_QPST_ANY2RESET) {
-		ipz_qeit_reset(&my_qp->ipz_rqueue);
-		ipz_qeit_reset(&my_qp->ipz_squeue);
-
-		if (qp_cur_state == IB_QPS_ERR && !is_user) {
-			del_from_err_list(my_qp->send_cq, &my_qp->sq_err_node);
-
-			if (HAS_RQ(my_qp))
-				del_from_err_list(my_qp->recv_cq,
-						  &my_qp->rq_err_node);
-		}
-		if (!is_user)
-			reset_queue_map(&my_qp->sq_map);
-
-		if (HAS_RQ(my_qp) && !is_user)
-			reset_queue_map(&my_qp->rq_map);
-	}
-
-	if (attr_mask & IB_QP_QKEY)
-		my_qp->qkey = attr->qkey;
-
-modify_qp_exit2:
-	if (squeue_locked) { /* this means: sqe -> rts */
-		spin_unlock_irqrestore(&my_qp->spinlock_s, flags);
-		my_qp->sqerr_purgeflag = 1;
-	}
-
-modify_qp_exit1:
-	ehca_free_fw_ctrlblock(mqpcb);
-
-	return ret;
-}
-
-int ehca_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask,
-		   struct ib_udata *udata)
-{
-	int ret = 0;
-
-	struct ehca_shca *shca = container_of(ibqp->device, struct ehca_shca,
-					      ib_device);
-	struct ehca_qp *my_qp = container_of(ibqp, struct ehca_qp, ib_qp);
-
-	/* The if-block below caches qp_attr to be modified for GSI and SMI
-	 * qps during the initialization by ib_mad. When the respective port
-	 * is activated, ie we got an event PORT_ACTIVE, we'll replay the
-	 * cached modify calls sequence, see ehca_recover_sqs() below.
-	 * Why that is required:
-	 * 1) If one port is connected, older code requires that port one
-	 *    to be connected and module option nr_ports=1 to be given by
-	 *    user, which is very inconvenient for end user.
-	 * 2) Firmware accepts modify_qp() only if respective port has become
-	 *    active. Older code had a wait loop of 30sec create_qp()/
-	 *    define_aqp1(), which is not appropriate in practice. This
-	 *    code now removes that wait loop, see define_aqp1(), and always
-	 *    reports all ports to ib_mad resp. users. Only activated ports
-	 *    will then usable for the users.
-	 */
-	if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI) {
-		int port = my_qp->init_attr.port_num;
-		struct ehca_sport *sport = &shca->sport[port - 1];
-		unsigned long flags;
-		spin_lock_irqsave(&sport->mod_sqp_lock, flags);
-		/* cache qp_attr only during init */
-		if (my_qp->mod_qp_parm) {
-			struct ehca_mod_qp_parm *p;
-			if (my_qp->mod_qp_parm_idx >= EHCA_MOD_QP_PARM_MAX) {
-				ehca_err(&shca->ib_device,
-					 "mod_qp_parm overflow state=%x port=%x"
-					 " type=%x", attr->qp_state,
-					 my_qp->init_attr.port_num,
-					 ibqp->qp_type);
-				spin_unlock_irqrestore(&sport->mod_sqp_lock,
-						       flags);
-				return -EINVAL;
-			}
-			p = &my_qp->mod_qp_parm[my_qp->mod_qp_parm_idx];
-			p->mask = attr_mask;
-			p->attr = *attr;
-			my_qp->mod_qp_parm_idx++;
-			ehca_dbg(&shca->ib_device,
-				 "Saved qp_attr for state=%x port=%x type=%x",
-				 attr->qp_state, my_qp->init_attr.port_num,
-				 ibqp->qp_type);
-			spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
-			goto out;
-		}
-		spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
-	}
-
-	ret = internal_modify_qp(ibqp, attr, attr_mask, 0);
-
-out:
-	if ((ret == 0) && (attr_mask & IB_QP_STATE))
-		my_qp->state = attr->qp_state;
-
-	return ret;
-}
-
-void ehca_recover_sqp(struct ib_qp *sqp)
-{
-	struct ehca_qp *my_sqp = container_of(sqp, struct ehca_qp, ib_qp);
-	int port = my_sqp->init_attr.port_num;
-	struct ib_qp_attr attr;
-	struct ehca_mod_qp_parm *qp_parm;
-	int i, qp_parm_idx, ret;
-	unsigned long flags, wr_cnt;
-
-	if (!my_sqp->mod_qp_parm)
-		return;
-	ehca_dbg(sqp->device, "SQP port=%x qp_num=%x", port, sqp->qp_num);
-
-	qp_parm = my_sqp->mod_qp_parm;
-	qp_parm_idx = my_sqp->mod_qp_parm_idx;
-	for (i = 0; i < qp_parm_idx; i++) {
-		attr = qp_parm[i].attr;
-		ret = internal_modify_qp(sqp, &attr, qp_parm[i].mask, 0);
-		if (ret) {
-			ehca_err(sqp->device, "Could not modify SQP port=%x "
-				 "qp_num=%x ret=%x", port, sqp->qp_num, ret);
-			goto free_qp_parm;
-		}
-		ehca_dbg(sqp->device, "SQP port=%x qp_num=%x in state=%x",
-			 port, sqp->qp_num, attr.qp_state);
-	}
-
-	/* re-trigger posted recv wrs */
-	wr_cnt =  my_sqp->ipz_rqueue.current_q_offset /
-		my_sqp->ipz_rqueue.qe_size;
-	if (wr_cnt) {
-		spin_lock_irqsave(&my_sqp->spinlock_r, flags);
-		hipz_update_rqa(my_sqp, wr_cnt);
-		spin_unlock_irqrestore(&my_sqp->spinlock_r, flags);
-		ehca_dbg(sqp->device, "doorbell port=%x qp_num=%x wr_cnt=%lx",
-			 port, sqp->qp_num, wr_cnt);
-	}
-
-free_qp_parm:
-	kfree(qp_parm);
-	/* this prevents subsequent calls to modify_qp() to cache qp_attr */
-	my_sqp->mod_qp_parm = NULL;
-}
-
-int ehca_query_qp(struct ib_qp *qp,
-		  struct ib_qp_attr *qp_attr,
-		  int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
-{
-	struct ehca_qp *my_qp = container_of(qp, struct ehca_qp, ib_qp);
-	struct ehca_shca *shca = container_of(qp->device, struct ehca_shca,
-					      ib_device);
-	struct ipz_adapter_handle adapter_handle = shca->ipz_hca_handle;
-	struct hcp_modify_qp_control_block *qpcb;
-	int cnt, ret = 0;
-	u64 h_ret;
-
-	if (qp_attr_mask & QP_ATTR_QUERY_NOT_SUPPORTED) {
-		ehca_err(qp->device, "Invalid attribute mask "
-			 "ehca_qp=%p qp_num=%x qp_attr_mask=%x ",
-			 my_qp, qp->qp_num, qp_attr_mask);
-		return -EINVAL;
-	}
-
-	qpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
-	if (!qpcb) {
-		ehca_err(qp->device, "Out of memory for qpcb "
-			 "ehca_qp=%p qp_num=%x", my_qp, qp->qp_num);
-		return -ENOMEM;
-	}
-
-	h_ret = hipz_h_query_qp(adapter_handle,
-				my_qp->ipz_qp_handle,
-				&my_qp->pf,
-				qpcb, my_qp->galpas.kernel);
-
-	if (h_ret != H_SUCCESS) {
-		ret = ehca2ib_return_code(h_ret);
-		ehca_err(qp->device, "hipz_h_query_qp() failed "
-			 "ehca_qp=%p qp_num=%x h_ret=%lli",
-			 my_qp, qp->qp_num, h_ret);
-		goto query_qp_exit1;
-	}
-
-	qp_attr->cur_qp_state = ehca2ib_qp_state(qpcb->qp_state);
-	qp_attr->qp_state = qp_attr->cur_qp_state;
-
-	if (qp_attr->cur_qp_state == -EINVAL) {
-		ret = -EINVAL;
-		ehca_err(qp->device, "Got invalid ehca_qp_state=%x "
-			 "ehca_qp=%p qp_num=%x",
-			 qpcb->qp_state, my_qp, qp->qp_num);
-		goto query_qp_exit1;
-	}
-
-	if (qp_attr->qp_state == IB_QPS_SQD)
-		qp_attr->sq_draining = 1;
-
-	qp_attr->qkey = qpcb->qkey;
-	qp_attr->path_mtu = qpcb->path_mtu;
-	qp_attr->path_mig_state = qpcb->path_migration_state - 1;
-	qp_attr->rq_psn = qpcb->receive_psn;
-	qp_attr->sq_psn = qpcb->send_psn;
-	qp_attr->min_rnr_timer = qpcb->min_rnr_nak_timer_field;
-	qp_attr->cap.max_send_wr = qpcb->max_nr_outst_send_wr-1;
-	qp_attr->cap.max_recv_wr = qpcb->max_nr_outst_recv_wr-1;
-	/* UD_AV CIRCUMVENTION */
-	if (my_qp->qp_type == IB_QPT_UD) {
-		qp_attr->cap.max_send_sge =
-			qpcb->actual_nr_sges_in_sq_wqe - 2;
-		qp_attr->cap.max_recv_sge =
-			qpcb->actual_nr_sges_in_rq_wqe - 2;
-	} else {
-		qp_attr->cap.max_send_sge =
-			qpcb->actual_nr_sges_in_sq_wqe;
-		qp_attr->cap.max_recv_sge =
-			qpcb->actual_nr_sges_in_rq_wqe;
-	}
-
-	qp_attr->cap.max_inline_data = my_qp->sq_max_inline_data_size;
-	qp_attr->dest_qp_num = qpcb->dest_qp_nr;
-
-	qp_attr->pkey_index = qpcb->prim_p_key_idx;
-	qp_attr->port_num = qpcb->prim_phys_port;
-	qp_attr->timeout = qpcb->timeout;
-	qp_attr->retry_cnt = qpcb->retry_count;
-	qp_attr->rnr_retry = qpcb->rnr_retry_count;
-
-	qp_attr->alt_pkey_index = qpcb->alt_p_key_idx;
-	qp_attr->alt_port_num = qpcb->alt_phys_port;
-	qp_attr->alt_timeout = qpcb->timeout_al;
-
-	qp_attr->max_dest_rd_atomic = qpcb->rdma_nr_atomic_resp_res;
-	qp_attr->max_rd_atomic = qpcb->rdma_atomic_outst_dest_qp;
-
-	/* primary av */
-	qp_attr->ah_attr.sl = qpcb->service_level;
-
-	if (qpcb->send_grh_flag) {
-		qp_attr->ah_attr.ah_flags = IB_AH_GRH;
-	}
-
-	qp_attr->ah_attr.static_rate = qpcb->max_static_rate;
-	qp_attr->ah_attr.dlid = qpcb->dlid;
-	qp_attr->ah_attr.src_path_bits = qpcb->source_path_bits;
-	qp_attr->ah_attr.port_num = qp_attr->port_num;
-
-	/* primary GRH */
-	qp_attr->ah_attr.grh.traffic_class = qpcb->traffic_class;
-	qp_attr->ah_attr.grh.hop_limit = qpcb->hop_limit;
-	qp_attr->ah_attr.grh.sgid_index = qpcb->source_gid_idx;
-	qp_attr->ah_attr.grh.flow_label = qpcb->flow_label;
-
-	for (cnt = 0; cnt < 16; cnt++)
-		qp_attr->ah_attr.grh.dgid.raw[cnt] =
-			qpcb->dest_gid.byte[cnt];
-
-	/* alternate AV */
-	qp_attr->alt_ah_attr.sl = qpcb->service_level_al;
-	if (qpcb->send_grh_flag_al) {
-		qp_attr->alt_ah_attr.ah_flags = IB_AH_GRH;
-	}
-
-	qp_attr->alt_ah_attr.static_rate = qpcb->max_static_rate_al;
-	qp_attr->alt_ah_attr.dlid = qpcb->dlid_al;
-	qp_attr->alt_ah_attr.src_path_bits = qpcb->source_path_bits_al;
-
-	/* alternate GRH */
-	qp_attr->alt_ah_attr.grh.traffic_class = qpcb->traffic_class_al;
-	qp_attr->alt_ah_attr.grh.hop_limit = qpcb->hop_limit_al;
-	qp_attr->alt_ah_attr.grh.sgid_index = qpcb->source_gid_idx_al;
-	qp_attr->alt_ah_attr.grh.flow_label = qpcb->flow_label_al;
-
-	for (cnt = 0; cnt < 16; cnt++)
-		qp_attr->alt_ah_attr.grh.dgid.raw[cnt] =
-			qpcb->dest_gid_al.byte[cnt];
-
-	/* return init attributes given in ehca_create_qp */
-	if (qp_init_attr)
-		*qp_init_attr = my_qp->init_attr;
-
-	if (ehca_debug_level >= 2)
-		ehca_dmp(qpcb, 4*70, "qp_num=%x", qp->qp_num);
-
-query_qp_exit1:
-	ehca_free_fw_ctrlblock(qpcb);
-
-	return ret;
-}
-
-int ehca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
-		    enum ib_srq_attr_mask attr_mask, struct ib_udata *udata)
-{
-	struct ehca_qp *my_qp =
-		container_of(ibsrq, struct ehca_qp, ib_srq);
-	struct ehca_shca *shca =
-		container_of(ibsrq->pd->device, struct ehca_shca, ib_device);
-	struct hcp_modify_qp_control_block *mqpcb;
-	u64 update_mask;
-	u64 h_ret;
-	int ret = 0;
-
-	mqpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
-	if (!mqpcb) {
-		ehca_err(ibsrq->device, "Could not get zeroed page for mqpcb "
-			 "ehca_qp=%p qp_num=%x ", my_qp, my_qp->real_qp_num);
-		return -ENOMEM;
-	}
-
-	update_mask = 0;
-	if (attr_mask & IB_SRQ_LIMIT) {
-		attr_mask &= ~IB_SRQ_LIMIT;
-		update_mask |=
-			EHCA_BMASK_SET(MQPCB_MASK_CURR_SRQ_LIMIT, 1)
-			| EHCA_BMASK_SET(MQPCB_MASK_QP_AFF_ASYN_EV_LOG_REG, 1);
-		mqpcb->curr_srq_limit = attr->srq_limit;
-		mqpcb->qp_aff_asyn_ev_log_reg =
-			EHCA_BMASK_SET(QPX_AAELOG_RESET_SRQ_LIMIT, 1);
-	}
-
-	/* by now, all bits in attr_mask should have been cleared */
-	if (attr_mask) {
-		ehca_err(ibsrq->device, "invalid attribute mask bits set  "
-			 "attr_mask=%x", attr_mask);
-		ret = -EINVAL;
-		goto modify_srq_exit0;
-	}
-
-	if (ehca_debug_level >= 2)
-		ehca_dmp(mqpcb, 4*70, "qp_num=%x", my_qp->real_qp_num);
-
-	h_ret = hipz_h_modify_qp(shca->ipz_hca_handle, my_qp->ipz_qp_handle,
-				 NULL, update_mask, mqpcb,
-				 my_qp->galpas.kernel);
-
-	if (h_ret != H_SUCCESS) {
-		ret = ehca2ib_return_code(h_ret);
-		ehca_err(ibsrq->device, "hipz_h_modify_qp() failed h_ret=%lli "
-			 "ehca_qp=%p qp_num=%x",
-			 h_ret, my_qp, my_qp->real_qp_num);
-	}
-
-modify_srq_exit0:
-	ehca_free_fw_ctrlblock(mqpcb);
-
-	return ret;
-}
-
-int ehca_query_srq(struct ib_srq *srq, struct ib_srq_attr *srq_attr)
-{
-	struct ehca_qp *my_qp = container_of(srq, struct ehca_qp, ib_srq);
-	struct ehca_shca *shca = container_of(srq->device, struct ehca_shca,
-					      ib_device);
-	struct ipz_adapter_handle adapter_handle = shca->ipz_hca_handle;
-	struct hcp_modify_qp_control_block *qpcb;
-	int ret = 0;
-	u64 h_ret;
-
-	qpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
-	if (!qpcb) {
-		ehca_err(srq->device, "Out of memory for qpcb "
-			 "ehca_qp=%p qp_num=%x", my_qp, my_qp->real_qp_num);
-		return -ENOMEM;
-	}
-
-	h_ret = hipz_h_query_qp(adapter_handle, my_qp->ipz_qp_handle,
-				NULL, qpcb, my_qp->galpas.kernel);
-
-	if (h_ret != H_SUCCESS) {
-		ret = ehca2ib_return_code(h_ret);
-		ehca_err(srq->device, "hipz_h_query_qp() failed "
-			 "ehca_qp=%p qp_num=%x h_ret=%lli",
-			 my_qp, my_qp->real_qp_num, h_ret);
-		goto query_srq_exit1;
-	}
-
-	srq_attr->max_wr = qpcb->max_nr_outst_recv_wr - 1;
-	srq_attr->max_sge = 3;
-	srq_attr->srq_limit = qpcb->curr_srq_limit;
-
-	if (ehca_debug_level >= 2)
-		ehca_dmp(qpcb, 4*70, "qp_num=%x", my_qp->real_qp_num);
-
-query_srq_exit1:
-	ehca_free_fw_ctrlblock(qpcb);
-
-	return ret;
-}
-
-static int internal_destroy_qp(struct ib_device *dev, struct ehca_qp *my_qp,
-			       struct ib_uobject *uobject)
-{
-	struct ehca_shca *shca = container_of(dev, struct ehca_shca, ib_device);
-	struct ehca_pd *my_pd = container_of(my_qp->ib_qp.pd, struct ehca_pd,
-					     ib_pd);
-	struct ehca_sport *sport = &shca->sport[my_qp->init_attr.port_num - 1];
-	u32 qp_num = my_qp->real_qp_num;
-	int ret;
-	u64 h_ret;
-	u8 port_num;
-	int is_user = 0;
-	enum ib_qp_type	qp_type;
-	unsigned long flags;
-
-	if (uobject) {
-		is_user = 1;
-		if (my_qp->mm_count_galpa ||
-		    my_qp->mm_count_rqueue || my_qp->mm_count_squeue) {
-			ehca_err(dev, "Resources still referenced in "
-				 "user space qp_num=%x", qp_num);
-			return -EINVAL;
-		}
-	}
-
-	if (my_qp->send_cq) {
-		ret = ehca_cq_unassign_qp(my_qp->send_cq, qp_num);
-		if (ret) {
-			ehca_err(dev, "Couldn't unassign qp from "
-				 "send_cq ret=%i qp_num=%x cq_num=%x", ret,
-				 qp_num, my_qp->send_cq->cq_number);
-			return ret;
-		}
-	}
-
-	write_lock_irqsave(&ehca_qp_idr_lock, flags);
-	idr_remove(&ehca_qp_idr, my_qp->token);
-	write_unlock_irqrestore(&ehca_qp_idr_lock, flags);
-
-	/*
-	 * SRQs will never get into an error list and do not have a recv_cq,
-	 * so we need to skip them here.
-	 */
-	if (HAS_RQ(my_qp) && !IS_SRQ(my_qp) && !is_user)
-		del_from_err_list(my_qp->recv_cq, &my_qp->rq_err_node);
-
-	if (HAS_SQ(my_qp) && !is_user)
-		del_from_err_list(my_qp->send_cq, &my_qp->sq_err_node);
-
-	/* now wait until all pending events have completed */
-	wait_event(my_qp->wait_completion, !atomic_read(&my_qp->nr_events));
-
-	h_ret = hipz_h_destroy_qp(shca->ipz_hca_handle, my_qp);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(dev, "hipz_h_destroy_qp() failed h_ret=%lli "
-			 "ehca_qp=%p qp_num=%x", h_ret, my_qp, qp_num);
-		return ehca2ib_return_code(h_ret);
-	}
-
-	port_num = my_qp->init_attr.port_num;
-	qp_type  = my_qp->init_attr.qp_type;
-
-	if (qp_type == IB_QPT_SMI || qp_type == IB_QPT_GSI) {
-		spin_lock_irqsave(&sport->mod_sqp_lock, flags);
-		kfree(my_qp->mod_qp_parm);
-		my_qp->mod_qp_parm = NULL;
-		shca->sport[port_num - 1].ibqp_sqp[qp_type] = NULL;
-		spin_unlock_irqrestore(&sport->mod_sqp_lock, flags);
-	}
-
-	/* no support for IB_QPT_SMI yet */
-	if (qp_type == IB_QPT_GSI) {
-		struct ib_event event;
-		ehca_info(dev, "device %s: port %x is inactive.",
-				shca->ib_device.name, port_num);
-		event.device = &shca->ib_device;
-		event.event = IB_EVENT_PORT_ERR;
-		event.element.port_num = port_num;
-		shca->sport[port_num - 1].port_state = IB_PORT_DOWN;
-		ib_dispatch_event(&event);
-	}
-
-	if (HAS_RQ(my_qp)) {
-		ipz_queue_dtor(my_pd, &my_qp->ipz_rqueue);
-		if (!is_user)
-			vfree(my_qp->rq_map.map);
-	}
-	if (HAS_SQ(my_qp)) {
-		ipz_queue_dtor(my_pd, &my_qp->ipz_squeue);
-		if (!is_user)
-			vfree(my_qp->sq_map.map);
-	}
-	kmem_cache_free(qp_cache, my_qp);
-	atomic_dec(&shca->num_qps);
-	return 0;
-}
-
-int ehca_destroy_qp(struct ib_qp *qp)
-{
-	return internal_destroy_qp(qp->device,
-				   container_of(qp, struct ehca_qp, ib_qp),
-				   qp->uobject);
-}
-
-int ehca_destroy_srq(struct ib_srq *srq)
-{
-	return internal_destroy_qp(srq->device,
-				   container_of(srq, struct ehca_qp, ib_srq),
-				   srq->uobject);
-}
-
-int ehca_init_qp_cache(void)
-{
-	qp_cache = kmem_cache_create("ehca_cache_qp",
-				     sizeof(struct ehca_qp), 0,
-				     SLAB_HWCACHE_ALIGN,
-				     NULL);
-	if (!qp_cache)
-		return -ENOMEM;
-	return 0;
-}
-
-void ehca_cleanup_qp_cache(void)
-{
-	if (qp_cache)
-		kmem_cache_destroy(qp_cache);
-}