These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 0 insertions, 2593 deletions

diff --git a/kernel/drivers/infiniband/hw/ehca/ehca_mrmw.c b/kernel/drivers/infiniband/hw/ehca/ehca_mrmw.c
deleted file mode 100644
index f914b3099..000000000
--- a/kernel/drivers/infiniband/hw/ehca/ehca_mrmw.c
+++ /dev/null
@@ -1,2593 +0,0 @@
-/*
- *  IBM eServer eHCA Infiniband device driver for Linux on POWER
- *
- *  MR/MW functions
- *
- *  Authors: Dietmar Decker <ddecker@de.ibm.com>
- *           Christoph Raisch <raisch@de.ibm.com>
- *           Hoang-Nam Nguyen <hnguyen@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 <rdma/ib_umem.h>
-
-#include "ehca_iverbs.h"
-#include "ehca_mrmw.h"
-#include "hcp_if.h"
-#include "hipz_hw.h"
-
-#define NUM_CHUNKS(length, chunk_size) \
-	(((length) + (chunk_size - 1)) / (chunk_size))
-
-/* max number of rpages (per hcall register_rpages) */
-#define MAX_RPAGES 512
-
-/* DMEM toleration management */
-#define EHCA_SECTSHIFT        SECTION_SIZE_BITS
-#define EHCA_SECTSIZE          (1UL << EHCA_SECTSHIFT)
-#define EHCA_HUGEPAGESHIFT     34
-#define EHCA_HUGEPAGE_SIZE     (1UL << EHCA_HUGEPAGESHIFT)
-#define EHCA_HUGEPAGE_PFN_MASK ((EHCA_HUGEPAGE_SIZE - 1) >> PAGE_SHIFT)
-#define EHCA_INVAL_ADDR        0xFFFFFFFFFFFFFFFFULL
-#define EHCA_DIR_INDEX_SHIFT 13                   /* 8k Entries in 64k block */
-#define EHCA_TOP_INDEX_SHIFT (EHCA_DIR_INDEX_SHIFT * 2)
-#define EHCA_MAP_ENTRIES (1 << EHCA_DIR_INDEX_SHIFT)
-#define EHCA_TOP_MAP_SIZE (0x10000)               /* currently fixed map size */
-#define EHCA_DIR_MAP_SIZE (0x10000)
-#define EHCA_ENT_MAP_SIZE (0x10000)
-#define EHCA_INDEX_MASK (EHCA_MAP_ENTRIES - 1)
-
-static unsigned long ehca_mr_len;
-
-/*
- * Memory map data structures
- */
-struct ehca_dir_bmap {
-	u64 ent[EHCA_MAP_ENTRIES];
-};
-struct ehca_top_bmap {
-	struct ehca_dir_bmap *dir[EHCA_MAP_ENTRIES];
-};
-struct ehca_bmap {
-	struct ehca_top_bmap *top[EHCA_MAP_ENTRIES];
-};
-
-static struct ehca_bmap *ehca_bmap;
-
-static struct kmem_cache *mr_cache;
-static struct kmem_cache *mw_cache;
-
-enum ehca_mr_pgsize {
-	EHCA_MR_PGSIZE4K  = 0x1000L,
-	EHCA_MR_PGSIZE64K = 0x10000L,
-	EHCA_MR_PGSIZE1M  = 0x100000L,
-	EHCA_MR_PGSIZE16M = 0x1000000L
-};
-
-#define EHCA_MR_PGSHIFT4K  12
-#define EHCA_MR_PGSHIFT64K 16
-#define EHCA_MR_PGSHIFT1M  20
-#define EHCA_MR_PGSHIFT16M 24
-
-static u64 ehca_map_vaddr(void *caddr);
-
-static u32 ehca_encode_hwpage_size(u32 pgsize)
-{
-	int log = ilog2(pgsize);
-	WARN_ON(log < 12 || log > 24 || log & 3);
-	return (log - 12) / 4;
-}
-
-static u64 ehca_get_max_hwpage_size(struct ehca_shca *shca)
-{
-	return rounddown_pow_of_two(shca->hca_cap_mr_pgsize);
-}
-
-static struct ehca_mr *ehca_mr_new(void)
-{
-	struct ehca_mr *me;
-
-	me = kmem_cache_zalloc(mr_cache, GFP_KERNEL);
-	if (me)
-		spin_lock_init(&me->mrlock);
-	else
-		ehca_gen_err("alloc failed");
-
-	return me;
-}
-
-static void ehca_mr_delete(struct ehca_mr *me)
-{
-	kmem_cache_free(mr_cache, me);
-}
-
-static struct ehca_mw *ehca_mw_new(void)
-{
-	struct ehca_mw *me;
-
-	me = kmem_cache_zalloc(mw_cache, GFP_KERNEL);
-	if (me)
-		spin_lock_init(&me->mwlock);
-	else
-		ehca_gen_err("alloc failed");
-
-	return me;
-}
-
-static void ehca_mw_delete(struct ehca_mw *me)
-{
-	kmem_cache_free(mw_cache, me);
-}
-
-/*----------------------------------------------------------------------*/
-
-struct ib_mr *ehca_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
-{
-	struct ib_mr *ib_mr;
-	int ret;
-	struct ehca_mr *e_maxmr;
-	struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd);
-	struct ehca_shca *shca =
-		container_of(pd->device, struct ehca_shca, ib_device);
-
-	if (shca->maxmr) {
-		e_maxmr = ehca_mr_new();
-		if (!e_maxmr) {
-			ehca_err(&shca->ib_device, "out of memory");
-			ib_mr = ERR_PTR(-ENOMEM);
-			goto get_dma_mr_exit0;
-		}
-
-		ret = ehca_reg_maxmr(shca, e_maxmr,
-				     (void *)ehca_map_vaddr((void *)(KERNELBASE + PHYSICAL_START)),
-				     mr_access_flags, e_pd,
-				     &e_maxmr->ib.ib_mr.lkey,
-				     &e_maxmr->ib.ib_mr.rkey);
-		if (ret) {
-			ehca_mr_delete(e_maxmr);
-			ib_mr = ERR_PTR(ret);
-			goto get_dma_mr_exit0;
-		}
-		ib_mr = &e_maxmr->ib.ib_mr;
-	} else {
-		ehca_err(&shca->ib_device, "no internal max-MR exist!");
-		ib_mr = ERR_PTR(-EINVAL);
-		goto get_dma_mr_exit0;
-	}
-
-get_dma_mr_exit0:
-	if (IS_ERR(ib_mr))
-		ehca_err(&shca->ib_device, "h_ret=%li pd=%p mr_access_flags=%x",
-			 PTR_ERR(ib_mr), pd, mr_access_flags);
-	return ib_mr;
-} /* end ehca_get_dma_mr() */
-
-/*----------------------------------------------------------------------*/
-
-struct ib_mr *ehca_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 *ib_mr;
-	int ret;
-	struct ehca_mr *e_mr;
-	struct ehca_shca *shca =
-		container_of(pd->device, struct ehca_shca, ib_device);
-	struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd);
-
-	u64 size;
-
-	if ((num_phys_buf <= 0) || !phys_buf_array) {
-		ehca_err(pd->device, "bad input values: num_phys_buf=%x "
-			 "phys_buf_array=%p", num_phys_buf, phys_buf_array);
-		ib_mr = ERR_PTR(-EINVAL);
-		goto reg_phys_mr_exit0;
-	}
-	if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) &&
-	     !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) ||
-	    ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) &&
-	     !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) {
-		/*
-		 * Remote Write Access requires Local Write Access
-		 * Remote Atomic Access requires Local Write Access
-		 */
-		ehca_err(pd->device, "bad input values: mr_access_flags=%x",
-			 mr_access_flags);
-		ib_mr = ERR_PTR(-EINVAL);
-		goto reg_phys_mr_exit0;
-	}
-
-	/* check physical buffer list and calculate size */
-	ret = ehca_mr_chk_buf_and_calc_size(phys_buf_array, num_phys_buf,
-					    iova_start, &size);
-	if (ret) {
-		ib_mr = ERR_PTR(ret);
-		goto reg_phys_mr_exit0;
-	}
-	if ((size == 0) ||
-	    (((u64)iova_start + size) < (u64)iova_start)) {
-		ehca_err(pd->device, "bad input values: size=%llx iova_start=%p",
-			 size, iova_start);
-		ib_mr = ERR_PTR(-EINVAL);
-		goto reg_phys_mr_exit0;
-	}
-
-	e_mr = ehca_mr_new();
-	if (!e_mr) {
-		ehca_err(pd->device, "out of memory");
-		ib_mr = ERR_PTR(-ENOMEM);
-		goto reg_phys_mr_exit0;
-	}
-
-	/* register MR on HCA */
-	if (ehca_mr_is_maxmr(size, iova_start)) {
-		e_mr->flags |= EHCA_MR_FLAG_MAXMR;
-		ret = ehca_reg_maxmr(shca, e_mr, iova_start, mr_access_flags,
-				     e_pd, &e_mr->ib.ib_mr.lkey,
-				     &e_mr->ib.ib_mr.rkey);
-		if (ret) {
-			ib_mr = ERR_PTR(ret);
-			goto reg_phys_mr_exit1;
-		}
-	} else {
-		struct ehca_mr_pginfo pginfo;
-		u32 num_kpages;
-		u32 num_hwpages;
-		u64 hw_pgsize;
-
-		num_kpages = NUM_CHUNKS(((u64)iova_start % PAGE_SIZE) + size,
-					PAGE_SIZE);
-		/* for kernel space we try most possible pgsize */
-		hw_pgsize = ehca_get_max_hwpage_size(shca);
-		num_hwpages = NUM_CHUNKS(((u64)iova_start % hw_pgsize) + size,
-					 hw_pgsize);
-		memset(&pginfo, 0, sizeof(pginfo));
-		pginfo.type = EHCA_MR_PGI_PHYS;
-		pginfo.num_kpages = num_kpages;
-		pginfo.hwpage_size = hw_pgsize;
-		pginfo.num_hwpages = num_hwpages;
-		pginfo.u.phy.num_phys_buf = num_phys_buf;
-		pginfo.u.phy.phys_buf_array = phys_buf_array;
-		pginfo.next_hwpage =
-			((u64)iova_start & ~PAGE_MASK) / hw_pgsize;
-
-		ret = ehca_reg_mr(shca, e_mr, iova_start, size, mr_access_flags,
-				  e_pd, &pginfo, &e_mr->ib.ib_mr.lkey,
-				  &e_mr->ib.ib_mr.rkey, EHCA_REG_MR);
-		if (ret) {
-			ib_mr = ERR_PTR(ret);
-			goto reg_phys_mr_exit1;
-		}
-	}
-
-	/* successful registration of all pages */
-	return &e_mr->ib.ib_mr;
-
-reg_phys_mr_exit1:
-	ehca_mr_delete(e_mr);
-reg_phys_mr_exit0:
-	if (IS_ERR(ib_mr))
-		ehca_err(pd->device, "h_ret=%li pd=%p phys_buf_array=%p "
-			 "num_phys_buf=%x mr_access_flags=%x iova_start=%p",
-			 PTR_ERR(ib_mr), pd, phys_buf_array,
-			 num_phys_buf, mr_access_flags, iova_start);
-	return ib_mr;
-} /* end ehca_reg_phys_mr() */
-
-/*----------------------------------------------------------------------*/
-
-struct ib_mr *ehca_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
-			       u64 virt, int mr_access_flags,
-			       struct ib_udata *udata)
-{
-	struct ib_mr *ib_mr;
-	struct ehca_mr *e_mr;
-	struct ehca_shca *shca =
-		container_of(pd->device, struct ehca_shca, ib_device);
-	struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd);
-	struct ehca_mr_pginfo pginfo;
-	int ret, page_shift;
-	u32 num_kpages;
-	u32 num_hwpages;
-	u64 hwpage_size;
-
-	if (!pd) {
-		ehca_gen_err("bad pd=%p", pd);
-		return ERR_PTR(-EFAULT);
-	}
-
-	if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) &&
-	     !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) ||
-	    ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) &&
-	     !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) {
-		/*
-		 * Remote Write Access requires Local Write Access
-		 * Remote Atomic Access requires Local Write Access
-		 */
-		ehca_err(pd->device, "bad input values: mr_access_flags=%x",
-			 mr_access_flags);
-		ib_mr = ERR_PTR(-EINVAL);
-		goto reg_user_mr_exit0;
-	}
-
-	if (length == 0 || virt + length < virt) {
-		ehca_err(pd->device, "bad input values: length=%llx "
-			 "virt_base=%llx", length, virt);
-		ib_mr = ERR_PTR(-EINVAL);
-		goto reg_user_mr_exit0;
-	}
-
-	e_mr = ehca_mr_new();
-	if (!e_mr) {
-		ehca_err(pd->device, "out of memory");
-		ib_mr = ERR_PTR(-ENOMEM);
-		goto reg_user_mr_exit0;
-	}
-
-	e_mr->umem = ib_umem_get(pd->uobject->context, start, length,
-				 mr_access_flags, 0);
-	if (IS_ERR(e_mr->umem)) {
-		ib_mr = (void *)e_mr->umem;
-		goto reg_user_mr_exit1;
-	}
-
-	if (e_mr->umem->page_size != PAGE_SIZE) {
-		ehca_err(pd->device, "page size not supported, "
-			 "e_mr->umem->page_size=%x", e_mr->umem->page_size);
-		ib_mr = ERR_PTR(-EINVAL);
-		goto reg_user_mr_exit2;
-	}
-
-	/* determine number of MR pages */
-	num_kpages = NUM_CHUNKS((virt % PAGE_SIZE) + length, PAGE_SIZE);
-	/* select proper hw_pgsize */
-	page_shift = PAGE_SHIFT;
-	if (e_mr->umem->hugetlb) {
-		/* determine page_shift, clamp between 4K and 16M */
-		page_shift = (fls64(length - 1) + 3) & ~3;
-		page_shift = min(max(page_shift, EHCA_MR_PGSHIFT4K),
-				 EHCA_MR_PGSHIFT16M);
-	}
-	hwpage_size = 1UL << page_shift;
-
-	/* now that we have the desired page size, shift until it's
-	 * supported, too. 4K is always supported, so this terminates.
-	 */
-	while (!(hwpage_size & shca->hca_cap_mr_pgsize))
-		hwpage_size >>= 4;
-
-reg_user_mr_fallback:
-	num_hwpages = NUM_CHUNKS((virt % hwpage_size) + length, hwpage_size);
-	/* register MR on HCA */
-	memset(&pginfo, 0, sizeof(pginfo));
-	pginfo.type = EHCA_MR_PGI_USER;
-	pginfo.hwpage_size = hwpage_size;
-	pginfo.num_kpages = num_kpages;
-	pginfo.num_hwpages = num_hwpages;
-	pginfo.u.usr.region = e_mr->umem;
-	pginfo.next_hwpage = ib_umem_offset(e_mr->umem) / hwpage_size;
-	pginfo.u.usr.next_sg = pginfo.u.usr.region->sg_head.sgl;
-	ret = ehca_reg_mr(shca, e_mr, (u64 *)virt, length, mr_access_flags,
-			  e_pd, &pginfo, &e_mr->ib.ib_mr.lkey,
-			  &e_mr->ib.ib_mr.rkey, EHCA_REG_MR);
-	if (ret == -EINVAL && pginfo.hwpage_size > PAGE_SIZE) {
-		ehca_warn(pd->device, "failed to register mr "
-			  "with hwpage_size=%llx", hwpage_size);
-		ehca_info(pd->device, "try to register mr with "
-			  "kpage_size=%lx", PAGE_SIZE);
-		/*
-		 * this means kpages are not contiguous for a hw page
-		 * try kernel page size as fallback solution
-		 */
-		hwpage_size = PAGE_SIZE;
-		goto reg_user_mr_fallback;
-	}
-	if (ret) {
-		ib_mr = ERR_PTR(ret);
-		goto reg_user_mr_exit2;
-	}
-
-	/* successful registration of all pages */
-	return &e_mr->ib.ib_mr;
-
-reg_user_mr_exit2:
-	ib_umem_release(e_mr->umem);
-reg_user_mr_exit1:
-	ehca_mr_delete(e_mr);
-reg_user_mr_exit0:
-	if (IS_ERR(ib_mr))
-		ehca_err(pd->device, "rc=%li pd=%p mr_access_flags=%x udata=%p",
-			 PTR_ERR(ib_mr), pd, mr_access_flags, udata);
-	return ib_mr;
-} /* end ehca_reg_user_mr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_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)
-{
-	int ret;
-
-	struct ehca_shca *shca =
-		container_of(mr->device, struct ehca_shca, ib_device);
-	struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr);
-	u64 new_size;
-	u64 *new_start;
-	u32 new_acl;
-	struct ehca_pd *new_pd;
-	u32 tmp_lkey, tmp_rkey;
-	unsigned long sl_flags;
-	u32 num_kpages = 0;
-	u32 num_hwpages = 0;
-	struct ehca_mr_pginfo pginfo;
-
-	if (!(mr_rereg_mask & IB_MR_REREG_TRANS)) {
-		/* TODO not supported, because PHYP rereg hCall needs pages */
-		ehca_err(mr->device, "rereg without IB_MR_REREG_TRANS not "
-			 "supported yet, mr_rereg_mask=%x", mr_rereg_mask);
-		ret = -EINVAL;
-		goto rereg_phys_mr_exit0;
-	}
-
-	if (mr_rereg_mask & IB_MR_REREG_PD) {
-		if (!pd) {
-			ehca_err(mr->device, "rereg with bad pd, pd=%p "
-				 "mr_rereg_mask=%x", pd, mr_rereg_mask);
-			ret = -EINVAL;
-			goto rereg_phys_mr_exit0;
-		}
-	}
-
-	if ((mr_rereg_mask &
-	     ~(IB_MR_REREG_TRANS | IB_MR_REREG_PD | IB_MR_REREG_ACCESS)) ||
-	    (mr_rereg_mask == 0)) {
-		ret = -EINVAL;
-		goto rereg_phys_mr_exit0;
-	}
-
-	/* check other parameters */
-	if (e_mr == shca->maxmr) {
-		/* should be impossible, however reject to be sure */
-		ehca_err(mr->device, "rereg internal max-MR impossible, mr=%p "
-			 "shca->maxmr=%p mr->lkey=%x",
-			 mr, shca->maxmr, mr->lkey);
-		ret = -EINVAL;
-		goto rereg_phys_mr_exit0;
-	}
-	if (mr_rereg_mask & IB_MR_REREG_TRANS) { /* transl., i.e. addr/size */
-		if (e_mr->flags & EHCA_MR_FLAG_FMR) {
-			ehca_err(mr->device, "not supported for FMR, mr=%p "
-				 "flags=%x", mr, e_mr->flags);
-			ret = -EINVAL;
-			goto rereg_phys_mr_exit0;
-		}
-		if (!phys_buf_array || num_phys_buf <= 0) {
-			ehca_err(mr->device, "bad input values mr_rereg_mask=%x"
-				 " phys_buf_array=%p num_phys_buf=%x",
-				 mr_rereg_mask, phys_buf_array, num_phys_buf);
-			ret = -EINVAL;
-			goto rereg_phys_mr_exit0;
-		}
-	}
-	if ((mr_rereg_mask & IB_MR_REREG_ACCESS) &&	/* change ACL */
-	    (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) &&
-	      !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) ||
-	     ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) &&
-	      !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)))) {
-		/*
-		 * Remote Write Access requires Local Write Access
-		 * Remote Atomic Access requires Local Write Access
-		 */
-		ehca_err(mr->device, "bad input values: mr_rereg_mask=%x "
-			 "mr_access_flags=%x", mr_rereg_mask, mr_access_flags);
-		ret = -EINVAL;
-		goto rereg_phys_mr_exit0;
-	}
-
-	/* set requested values dependent on rereg request */
-	spin_lock_irqsave(&e_mr->mrlock, sl_flags);
-	new_start = e_mr->start;
-	new_size = e_mr->size;
-	new_acl = e_mr->acl;
-	new_pd = container_of(mr->pd, struct ehca_pd, ib_pd);
-
-	if (mr_rereg_mask & IB_MR_REREG_TRANS) {
-		u64 hw_pgsize = ehca_get_max_hwpage_size(shca);
-
-		new_start = iova_start;	/* change address */
-		/* check physical buffer list and calculate size */
-		ret = ehca_mr_chk_buf_and_calc_size(phys_buf_array,
-						    num_phys_buf, iova_start,
-						    &new_size);
-		if (ret)
-			goto rereg_phys_mr_exit1;
-		if ((new_size == 0) ||
-		    (((u64)iova_start + new_size) < (u64)iova_start)) {
-			ehca_err(mr->device, "bad input values: new_size=%llx "
-				 "iova_start=%p", new_size, iova_start);
-			ret = -EINVAL;
-			goto rereg_phys_mr_exit1;
-		}
-		num_kpages = NUM_CHUNKS(((u64)new_start % PAGE_SIZE) +
-					new_size, PAGE_SIZE);
-		num_hwpages = NUM_CHUNKS(((u64)new_start % hw_pgsize) +
-					 new_size, hw_pgsize);
-		memset(&pginfo, 0, sizeof(pginfo));
-		pginfo.type = EHCA_MR_PGI_PHYS;
-		pginfo.num_kpages = num_kpages;
-		pginfo.hwpage_size = hw_pgsize;
-		pginfo.num_hwpages = num_hwpages;
-		pginfo.u.phy.num_phys_buf = num_phys_buf;
-		pginfo.u.phy.phys_buf_array = phys_buf_array;
-		pginfo.next_hwpage =
-			((u64)iova_start & ~PAGE_MASK) / hw_pgsize;
-	}
-	if (mr_rereg_mask & IB_MR_REREG_ACCESS)
-		new_acl = mr_access_flags;
-	if (mr_rereg_mask & IB_MR_REREG_PD)
-		new_pd = container_of(pd, struct ehca_pd, ib_pd);
-
-	ret = ehca_rereg_mr(shca, e_mr, new_start, new_size, new_acl,
-			    new_pd, &pginfo, &tmp_lkey, &tmp_rkey);
-	if (ret)
-		goto rereg_phys_mr_exit1;
-
-	/* successful reregistration */
-	if (mr_rereg_mask & IB_MR_REREG_PD)
-		mr->pd = pd;
-	mr->lkey = tmp_lkey;
-	mr->rkey = tmp_rkey;
-
-rereg_phys_mr_exit1:
-	spin_unlock_irqrestore(&e_mr->mrlock, sl_flags);
-rereg_phys_mr_exit0:
-	if (ret)
-		ehca_err(mr->device, "ret=%i mr=%p mr_rereg_mask=%x pd=%p "
-			 "phys_buf_array=%p num_phys_buf=%x mr_access_flags=%x "
-			 "iova_start=%p",
-			 ret, mr, mr_rereg_mask, pd, phys_buf_array,
-			 num_phys_buf, mr_access_flags, iova_start);
-	return ret;
-} /* end ehca_rereg_phys_mr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
-{
-	int ret = 0;
-	u64 h_ret;
-	struct ehca_shca *shca =
-		container_of(mr->device, struct ehca_shca, ib_device);
-	struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr);
-	unsigned long sl_flags;
-	struct ehca_mr_hipzout_parms hipzout;
-
-	if ((e_mr->flags & EHCA_MR_FLAG_FMR)) {
-		ehca_err(mr->device, "not supported for FMR, mr=%p e_mr=%p "
-			 "e_mr->flags=%x", mr, e_mr, e_mr->flags);
-		ret = -EINVAL;
-		goto query_mr_exit0;
-	}
-
-	memset(mr_attr, 0, sizeof(struct ib_mr_attr));
-	spin_lock_irqsave(&e_mr->mrlock, sl_flags);
-
-	h_ret = hipz_h_query_mr(shca->ipz_hca_handle, e_mr, &hipzout);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(mr->device, "hipz_mr_query failed, h_ret=%lli mr=%p "
-			 "hca_hndl=%llx mr_hndl=%llx lkey=%x",
-			 h_ret, mr, shca->ipz_hca_handle.handle,
-			 e_mr->ipz_mr_handle.handle, mr->lkey);
-		ret = ehca2ib_return_code(h_ret);
-		goto query_mr_exit1;
-	}
-	mr_attr->pd = mr->pd;
-	mr_attr->device_virt_addr = hipzout.vaddr;
-	mr_attr->size = hipzout.len;
-	mr_attr->lkey = hipzout.lkey;
-	mr_attr->rkey = hipzout.rkey;
-	ehca_mrmw_reverse_map_acl(&hipzout.acl, &mr_attr->mr_access_flags);
-
-query_mr_exit1:
-	spin_unlock_irqrestore(&e_mr->mrlock, sl_flags);
-query_mr_exit0:
-	if (ret)
-		ehca_err(mr->device, "ret=%i mr=%p mr_attr=%p",
-			 ret, mr, mr_attr);
-	return ret;
-} /* end ehca_query_mr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_dereg_mr(struct ib_mr *mr)
-{
-	int ret = 0;
-	u64 h_ret;
-	struct ehca_shca *shca =
-		container_of(mr->device, struct ehca_shca, ib_device);
-	struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr);
-
-	if ((e_mr->flags & EHCA_MR_FLAG_FMR)) {
-		ehca_err(mr->device, "not supported for FMR, mr=%p e_mr=%p "
-			 "e_mr->flags=%x", mr, e_mr, e_mr->flags);
-		ret = -EINVAL;
-		goto dereg_mr_exit0;
-	} else if (e_mr == shca->maxmr) {
-		/* should be impossible, however reject to be sure */
-		ehca_err(mr->device, "dereg internal max-MR impossible, mr=%p "
-			 "shca->maxmr=%p mr->lkey=%x",
-			 mr, shca->maxmr, mr->lkey);
-		ret = -EINVAL;
-		goto dereg_mr_exit0;
-	}
-
-	/* TODO: BUSY: MR still has bound window(s) */
-	h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(mr->device, "hipz_free_mr failed, h_ret=%lli shca=%p "
-			 "e_mr=%p hca_hndl=%llx mr_hndl=%llx mr->lkey=%x",
-			 h_ret, shca, e_mr, shca->ipz_hca_handle.handle,
-			 e_mr->ipz_mr_handle.handle, mr->lkey);
-		ret = ehca2ib_return_code(h_ret);
-		goto dereg_mr_exit0;
-	}
-
-	if (e_mr->umem)
-		ib_umem_release(e_mr->umem);
-
-	/* successful deregistration */
-	ehca_mr_delete(e_mr);
-
-dereg_mr_exit0:
-	if (ret)
-		ehca_err(mr->device, "ret=%i mr=%p", ret, mr);
-	return ret;
-} /* end ehca_dereg_mr() */
-
-/*----------------------------------------------------------------------*/
-
-struct ib_mw *ehca_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
-{
-	struct ib_mw *ib_mw;
-	u64 h_ret;
-	struct ehca_mw *e_mw;
-	struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd);
-	struct ehca_shca *shca =
-		container_of(pd->device, struct ehca_shca, ib_device);
-	struct ehca_mw_hipzout_parms hipzout;
-
-	if (type != IB_MW_TYPE_1)
-		return ERR_PTR(-EINVAL);
-
-	e_mw = ehca_mw_new();
-	if (!e_mw) {
-		ib_mw = ERR_PTR(-ENOMEM);
-		goto alloc_mw_exit0;
-	}
-
-	h_ret = hipz_h_alloc_resource_mw(shca->ipz_hca_handle, e_mw,
-					 e_pd->fw_pd, &hipzout);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(pd->device, "hipz_mw_allocate failed, h_ret=%lli "
-			 "shca=%p hca_hndl=%llx mw=%p",
-			 h_ret, shca, shca->ipz_hca_handle.handle, e_mw);
-		ib_mw = ERR_PTR(ehca2ib_return_code(h_ret));
-		goto alloc_mw_exit1;
-	}
-	/* successful MW allocation */
-	e_mw->ipz_mw_handle = hipzout.handle;
-	e_mw->ib_mw.rkey    = hipzout.rkey;
-	return &e_mw->ib_mw;
-
-alloc_mw_exit1:
-	ehca_mw_delete(e_mw);
-alloc_mw_exit0:
-	if (IS_ERR(ib_mw))
-		ehca_err(pd->device, "h_ret=%li pd=%p", PTR_ERR(ib_mw), pd);
-	return ib_mw;
-} /* end ehca_alloc_mw() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_bind_mw(struct ib_qp *qp,
-		 struct ib_mw *mw,
-		 struct ib_mw_bind *mw_bind)
-{
-	/* TODO: not supported up to now */
-	ehca_gen_err("bind MW currently not supported by HCAD");
-
-	return -EPERM;
-} /* end ehca_bind_mw() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_dealloc_mw(struct ib_mw *mw)
-{
-	u64 h_ret;
-	struct ehca_shca *shca =
-		container_of(mw->device, struct ehca_shca, ib_device);
-	struct ehca_mw *e_mw = container_of(mw, struct ehca_mw, ib_mw);
-
-	h_ret = hipz_h_free_resource_mw(shca->ipz_hca_handle, e_mw);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(mw->device, "hipz_free_mw failed, h_ret=%lli shca=%p "
-			 "mw=%p rkey=%x hca_hndl=%llx mw_hndl=%llx",
-			 h_ret, shca, mw, mw->rkey, shca->ipz_hca_handle.handle,
-			 e_mw->ipz_mw_handle.handle);
-		return ehca2ib_return_code(h_ret);
-	}
-	/* successful deallocation */
-	ehca_mw_delete(e_mw);
-	return 0;
-} /* end ehca_dealloc_mw() */
-
-/*----------------------------------------------------------------------*/
-
-struct ib_fmr *ehca_alloc_fmr(struct ib_pd *pd,
-			      int mr_access_flags,
-			      struct ib_fmr_attr *fmr_attr)
-{
-	struct ib_fmr *ib_fmr;
-	struct ehca_shca *shca =
-		container_of(pd->device, struct ehca_shca, ib_device);
-	struct ehca_pd *e_pd = container_of(pd, struct ehca_pd, ib_pd);
-	struct ehca_mr *e_fmr;
-	int ret;
-	u32 tmp_lkey, tmp_rkey;
-	struct ehca_mr_pginfo pginfo;
-	u64 hw_pgsize;
-
-	/* check other parameters */
-	if (((mr_access_flags & IB_ACCESS_REMOTE_WRITE) &&
-	     !(mr_access_flags & IB_ACCESS_LOCAL_WRITE)) ||
-	    ((mr_access_flags & IB_ACCESS_REMOTE_ATOMIC) &&
-	     !(mr_access_flags & IB_ACCESS_LOCAL_WRITE))) {
-		/*
-		 * Remote Write Access requires Local Write Access
-		 * Remote Atomic Access requires Local Write Access
-		 */
-		ehca_err(pd->device, "bad input values: mr_access_flags=%x",
-			 mr_access_flags);
-		ib_fmr = ERR_PTR(-EINVAL);
-		goto alloc_fmr_exit0;
-	}
-	if (mr_access_flags & IB_ACCESS_MW_BIND) {
-		ehca_err(pd->device, "bad input values: mr_access_flags=%x",
-			 mr_access_flags);
-		ib_fmr = ERR_PTR(-EINVAL);
-		goto alloc_fmr_exit0;
-	}
-	if ((fmr_attr->max_pages == 0) || (fmr_attr->max_maps == 0)) {
-		ehca_err(pd->device, "bad input values: fmr_attr->max_pages=%x "
-			 "fmr_attr->max_maps=%x fmr_attr->page_shift=%x",
-			 fmr_attr->max_pages, fmr_attr->max_maps,
-			 fmr_attr->page_shift);
-		ib_fmr = ERR_PTR(-EINVAL);
-		goto alloc_fmr_exit0;
-	}
-
-	hw_pgsize = 1 << fmr_attr->page_shift;
-	if (!(hw_pgsize & shca->hca_cap_mr_pgsize)) {
-		ehca_err(pd->device, "unsupported fmr_attr->page_shift=%x",
-			 fmr_attr->page_shift);
-		ib_fmr = ERR_PTR(-EINVAL);
-		goto alloc_fmr_exit0;
-	}
-
-	e_fmr = ehca_mr_new();
-	if (!e_fmr) {
-		ib_fmr = ERR_PTR(-ENOMEM);
-		goto alloc_fmr_exit0;
-	}
-	e_fmr->flags |= EHCA_MR_FLAG_FMR;
-
-	/* register MR on HCA */
-	memset(&pginfo, 0, sizeof(pginfo));
-	pginfo.hwpage_size = hw_pgsize;
-	/*
-	 * pginfo.num_hwpages==0, ie register_rpages() will not be called
-	 * but deferred to map_phys_fmr()
-	 */
-	ret = ehca_reg_mr(shca, e_fmr, NULL,
-			  fmr_attr->max_pages * (1 << fmr_attr->page_shift),
-			  mr_access_flags, e_pd, &pginfo,
-			  &tmp_lkey, &tmp_rkey, EHCA_REG_MR);
-	if (ret) {
-		ib_fmr = ERR_PTR(ret);
-		goto alloc_fmr_exit1;
-	}
-
-	/* successful */
-	e_fmr->hwpage_size = hw_pgsize;
-	e_fmr->fmr_page_size = 1 << fmr_attr->page_shift;
-	e_fmr->fmr_max_pages = fmr_attr->max_pages;
-	e_fmr->fmr_max_maps = fmr_attr->max_maps;
-	e_fmr->fmr_map_cnt = 0;
-	return &e_fmr->ib.ib_fmr;
-
-alloc_fmr_exit1:
-	ehca_mr_delete(e_fmr);
-alloc_fmr_exit0:
-	return ib_fmr;
-} /* end ehca_alloc_fmr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_map_phys_fmr(struct ib_fmr *fmr,
-		      u64 *page_list,
-		      int list_len,
-		      u64 iova)
-{
-	int ret;
-	struct ehca_shca *shca =
-		container_of(fmr->device, struct ehca_shca, ib_device);
-	struct ehca_mr *e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr);
-	struct ehca_pd *e_pd = container_of(fmr->pd, struct ehca_pd, ib_pd);
-	struct ehca_mr_pginfo pginfo;
-	u32 tmp_lkey, tmp_rkey;
-
-	if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) {
-		ehca_err(fmr->device, "not a FMR, e_fmr=%p e_fmr->flags=%x",
-			 e_fmr, e_fmr->flags);
-		ret = -EINVAL;
-		goto map_phys_fmr_exit0;
-	}
-	ret = ehca_fmr_check_page_list(e_fmr, page_list, list_len);
-	if (ret)
-		goto map_phys_fmr_exit0;
-	if (iova % e_fmr->fmr_page_size) {
-		/* only whole-numbered pages */
-		ehca_err(fmr->device, "bad iova, iova=%llx fmr_page_size=%x",
-			 iova, e_fmr->fmr_page_size);
-		ret = -EINVAL;
-		goto map_phys_fmr_exit0;
-	}
-	if (e_fmr->fmr_map_cnt >= e_fmr->fmr_max_maps) {
-		/* HCAD does not limit the maps, however trace this anyway */
-		ehca_info(fmr->device, "map limit exceeded, fmr=%p "
-			  "e_fmr->fmr_map_cnt=%x e_fmr->fmr_max_maps=%x",
-			  fmr, e_fmr->fmr_map_cnt, e_fmr->fmr_max_maps);
-	}
-
-	memset(&pginfo, 0, sizeof(pginfo));
-	pginfo.type = EHCA_MR_PGI_FMR;
-	pginfo.num_kpages = list_len;
-	pginfo.hwpage_size = e_fmr->hwpage_size;
-	pginfo.num_hwpages =
-		list_len * e_fmr->fmr_page_size / pginfo.hwpage_size;
-	pginfo.u.fmr.page_list = page_list;
-	pginfo.next_hwpage =
-		(iova & (e_fmr->fmr_page_size-1)) / pginfo.hwpage_size;
-	pginfo.u.fmr.fmr_pgsize = e_fmr->fmr_page_size;
-
-	ret = ehca_rereg_mr(shca, e_fmr, (u64 *)iova,
-			    list_len * e_fmr->fmr_page_size,
-			    e_fmr->acl, e_pd, &pginfo, &tmp_lkey, &tmp_rkey);
-	if (ret)
-		goto map_phys_fmr_exit0;
-
-	/* successful reregistration */
-	e_fmr->fmr_map_cnt++;
-	e_fmr->ib.ib_fmr.lkey = tmp_lkey;
-	e_fmr->ib.ib_fmr.rkey = tmp_rkey;
-	return 0;
-
-map_phys_fmr_exit0:
-	if (ret)
-		ehca_err(fmr->device, "ret=%i fmr=%p page_list=%p list_len=%x "
-			 "iova=%llx", ret, fmr, page_list, list_len, iova);
-	return ret;
-} /* end ehca_map_phys_fmr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_unmap_fmr(struct list_head *fmr_list)
-{
-	int ret = 0;
-	struct ib_fmr *ib_fmr;
-	struct ehca_shca *shca = NULL;
-	struct ehca_shca *prev_shca;
-	struct ehca_mr *e_fmr;
-	u32 num_fmr = 0;
-	u32 unmap_fmr_cnt = 0;
-
-	/* check all FMR belong to same SHCA, and check internal flag */
-	list_for_each_entry(ib_fmr, fmr_list, list) {
-		prev_shca = shca;
-		shca = container_of(ib_fmr->device, struct ehca_shca,
-				    ib_device);
-		e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr);
-		if ((shca != prev_shca) && prev_shca) {
-			ehca_err(&shca->ib_device, "SHCA mismatch, shca=%p "
-				 "prev_shca=%p e_fmr=%p",
-				 shca, prev_shca, e_fmr);
-			ret = -EINVAL;
-			goto unmap_fmr_exit0;
-		}
-		if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) {
-			ehca_err(&shca->ib_device, "not a FMR, e_fmr=%p "
-				 "e_fmr->flags=%x", e_fmr, e_fmr->flags);
-			ret = -EINVAL;
-			goto unmap_fmr_exit0;
-		}
-		num_fmr++;
-	}
-
-	/* loop over all FMRs to unmap */
-	list_for_each_entry(ib_fmr, fmr_list, list) {
-		unmap_fmr_cnt++;
-		e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr);
-		shca = container_of(ib_fmr->device, struct ehca_shca,
-				    ib_device);
-		ret = ehca_unmap_one_fmr(shca, e_fmr);
-		if (ret) {
-			/* unmap failed, stop unmapping of rest of FMRs */
-			ehca_err(&shca->ib_device, "unmap of one FMR failed, "
-				 "stop rest, e_fmr=%p num_fmr=%x "
-				 "unmap_fmr_cnt=%x lkey=%x", e_fmr, num_fmr,
-				 unmap_fmr_cnt, e_fmr->ib.ib_fmr.lkey);
-			goto unmap_fmr_exit0;
-		}
-	}
-
-unmap_fmr_exit0:
-	if (ret)
-		ehca_gen_err("ret=%i fmr_list=%p num_fmr=%x unmap_fmr_cnt=%x",
-			     ret, fmr_list, num_fmr, unmap_fmr_cnt);
-	return ret;
-} /* end ehca_unmap_fmr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_dealloc_fmr(struct ib_fmr *fmr)
-{
-	int ret;
-	u64 h_ret;
-	struct ehca_shca *shca =
-		container_of(fmr->device, struct ehca_shca, ib_device);
-	struct ehca_mr *e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr);
-
-	if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) {
-		ehca_err(fmr->device, "not a FMR, e_fmr=%p e_fmr->flags=%x",
-			 e_fmr, e_fmr->flags);
-		ret = -EINVAL;
-		goto free_fmr_exit0;
-	}
-
-	h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(fmr->device, "hipz_free_mr failed, h_ret=%lli e_fmr=%p "
-			 "hca_hndl=%llx fmr_hndl=%llx fmr->lkey=%x",
-			 h_ret, e_fmr, shca->ipz_hca_handle.handle,
-			 e_fmr->ipz_mr_handle.handle, fmr->lkey);
-		ret = ehca2ib_return_code(h_ret);
-		goto free_fmr_exit0;
-	}
-	/* successful deregistration */
-	ehca_mr_delete(e_fmr);
-	return 0;
-
-free_fmr_exit0:
-	if (ret)
-		ehca_err(&shca->ib_device, "ret=%i fmr=%p", ret, fmr);
-	return ret;
-} /* end ehca_dealloc_fmr() */
-
-/*----------------------------------------------------------------------*/
-
-static int ehca_reg_bmap_mr_rpages(struct ehca_shca *shca,
-				   struct ehca_mr *e_mr,
-				   struct ehca_mr_pginfo *pginfo);
-
-int ehca_reg_mr(struct ehca_shca *shca,
-		struct ehca_mr *e_mr,
-		u64 *iova_start,
-		u64 size,
-		int acl,
-		struct ehca_pd *e_pd,
-		struct ehca_mr_pginfo *pginfo,
-		u32 *lkey, /*OUT*/
-		u32 *rkey, /*OUT*/
-		enum ehca_reg_type reg_type)
-{
-	int ret;
-	u64 h_ret;
-	u32 hipz_acl;
-	struct ehca_mr_hipzout_parms hipzout;
-
-	ehca_mrmw_map_acl(acl, &hipz_acl);
-	ehca_mrmw_set_pgsize_hipz_acl(pginfo->hwpage_size, &hipz_acl);
-	if (ehca_use_hp_mr == 1)
-		hipz_acl |= 0x00000001;
-
-	h_ret = hipz_h_alloc_resource_mr(shca->ipz_hca_handle, e_mr,
-					 (u64)iova_start, size, hipz_acl,
-					 e_pd->fw_pd, &hipzout);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(&shca->ib_device, "hipz_alloc_mr failed, h_ret=%lli "
-			 "hca_hndl=%llx", h_ret, shca->ipz_hca_handle.handle);
-		ret = ehca2ib_return_code(h_ret);
-		goto ehca_reg_mr_exit0;
-	}
-
-	e_mr->ipz_mr_handle = hipzout.handle;
-
-	if (reg_type == EHCA_REG_BUSMAP_MR)
-		ret = ehca_reg_bmap_mr_rpages(shca, e_mr, pginfo);
-	else if (reg_type == EHCA_REG_MR)
-		ret = ehca_reg_mr_rpages(shca, e_mr, pginfo);
-	else
-		ret = -EINVAL;
-
-	if (ret)
-		goto ehca_reg_mr_exit1;
-
-	/* successful registration */
-	e_mr->num_kpages = pginfo->num_kpages;
-	e_mr->num_hwpages = pginfo->num_hwpages;
-	e_mr->hwpage_size = pginfo->hwpage_size;
-	e_mr->start = iova_start;
-	e_mr->size = size;
-	e_mr->acl = acl;
-	*lkey = hipzout.lkey;
-	*rkey = hipzout.rkey;
-	return 0;
-
-ehca_reg_mr_exit1:
-	h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(&shca->ib_device, "h_ret=%lli shca=%p e_mr=%p "
-			 "iova_start=%p size=%llx acl=%x e_pd=%p lkey=%x "
-			 "pginfo=%p num_kpages=%llx num_hwpages=%llx ret=%i",
-			 h_ret, shca, e_mr, iova_start, size, acl, e_pd,
-			 hipzout.lkey, pginfo, pginfo->num_kpages,
-			 pginfo->num_hwpages, ret);
-		ehca_err(&shca->ib_device, "internal error in ehca_reg_mr, "
-			 "not recoverable");
-	}
-ehca_reg_mr_exit0:
-	if (ret)
-		ehca_err(&shca->ib_device, "ret=%i shca=%p e_mr=%p "
-			 "iova_start=%p size=%llx acl=%x e_pd=%p pginfo=%p "
-			 "num_kpages=%llx num_hwpages=%llx",
-			 ret, shca, e_mr, iova_start, size, acl, e_pd, pginfo,
-			 pginfo->num_kpages, pginfo->num_hwpages);
-	return ret;
-} /* end ehca_reg_mr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_reg_mr_rpages(struct ehca_shca *shca,
-		       struct ehca_mr *e_mr,
-		       struct ehca_mr_pginfo *pginfo)
-{
-	int ret = 0;
-	u64 h_ret;
-	u32 rnum;
-	u64 rpage;
-	u32 i;
-	u64 *kpage;
-
-	if (!pginfo->num_hwpages) /* in case of fmr */
-		return 0;
-
-	kpage = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
-	if (!kpage) {
-		ehca_err(&shca->ib_device, "kpage alloc failed");
-		ret = -ENOMEM;
-		goto ehca_reg_mr_rpages_exit0;
-	}
-
-	/* max MAX_RPAGES ehca mr pages per register call */
-	for (i = 0; i < NUM_CHUNKS(pginfo->num_hwpages, MAX_RPAGES); i++) {
-
-		if (i == NUM_CHUNKS(pginfo->num_hwpages, MAX_RPAGES) - 1) {
-			rnum = pginfo->num_hwpages % MAX_RPAGES; /* last shot */
-			if (rnum == 0)
-				rnum = MAX_RPAGES;      /* last shot is full */
-		} else
-			rnum = MAX_RPAGES;
-
-		ret = ehca_set_pagebuf(pginfo, rnum, kpage);
-		if (ret) {
-			ehca_err(&shca->ib_device, "ehca_set_pagebuf "
-				 "bad rc, ret=%i rnum=%x kpage=%p",
-				 ret, rnum, kpage);
-			goto ehca_reg_mr_rpages_exit1;
-		}
-
-		if (rnum > 1) {
-			rpage = __pa(kpage);
-			if (!rpage) {
-				ehca_err(&shca->ib_device, "kpage=%p i=%x",
-					 kpage, i);
-				ret = -EFAULT;
-				goto ehca_reg_mr_rpages_exit1;
-			}
-		} else
-			rpage = *kpage;
-
-		h_ret = hipz_h_register_rpage_mr(
-			shca->ipz_hca_handle, e_mr,
-			ehca_encode_hwpage_size(pginfo->hwpage_size),
-			0, rpage, rnum);
-
-		if (i == NUM_CHUNKS(pginfo->num_hwpages, MAX_RPAGES) - 1) {
-			/*
-			 * check for 'registration complete'==H_SUCCESS
-			 * and for 'page registered'==H_PAGE_REGISTERED
-			 */
-			if (h_ret != H_SUCCESS) {
-				ehca_err(&shca->ib_device, "last "
-					 "hipz_reg_rpage_mr failed, h_ret=%lli "
-					 "e_mr=%p i=%x hca_hndl=%llx mr_hndl=%llx"
-					 " lkey=%x", h_ret, e_mr, i,
-					 shca->ipz_hca_handle.handle,
-					 e_mr->ipz_mr_handle.handle,
-					 e_mr->ib.ib_mr.lkey);
-				ret = ehca2ib_return_code(h_ret);
-				break;
-			} else
-				ret = 0;
-		} else if (h_ret != H_PAGE_REGISTERED) {
-			ehca_err(&shca->ib_device, "hipz_reg_rpage_mr failed, "
-				 "h_ret=%lli e_mr=%p i=%x lkey=%x hca_hndl=%llx "
-				 "mr_hndl=%llx", h_ret, e_mr, i,
-				 e_mr->ib.ib_mr.lkey,
-				 shca->ipz_hca_handle.handle,
-				 e_mr->ipz_mr_handle.handle);
-			ret = ehca2ib_return_code(h_ret);
-			break;
-		} else
-			ret = 0;
-	} /* end for(i) */
-
-
-ehca_reg_mr_rpages_exit1:
-	ehca_free_fw_ctrlblock(kpage);
-ehca_reg_mr_rpages_exit0:
-	if (ret)
-		ehca_err(&shca->ib_device, "ret=%i shca=%p e_mr=%p pginfo=%p "
-			 "num_kpages=%llx num_hwpages=%llx", ret, shca, e_mr,
-			 pginfo, pginfo->num_kpages, pginfo->num_hwpages);
-	return ret;
-} /* end ehca_reg_mr_rpages() */
-
-/*----------------------------------------------------------------------*/
-
-inline int ehca_rereg_mr_rereg1(struct ehca_shca *shca,
-				struct ehca_mr *e_mr,
-				u64 *iova_start,
-				u64 size,
-				u32 acl,
-				struct ehca_pd *e_pd,
-				struct ehca_mr_pginfo *pginfo,
-				u32 *lkey, /*OUT*/
-				u32 *rkey) /*OUT*/
-{
-	int ret;
-	u64 h_ret;
-	u32 hipz_acl;
-	u64 *kpage;
-	u64 rpage;
-	struct ehca_mr_pginfo pginfo_save;
-	struct ehca_mr_hipzout_parms hipzout;
-
-	ehca_mrmw_map_acl(acl, &hipz_acl);
-	ehca_mrmw_set_pgsize_hipz_acl(pginfo->hwpage_size, &hipz_acl);
-
-	kpage = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
-	if (!kpage) {
-		ehca_err(&shca->ib_device, "kpage alloc failed");
-		ret = -ENOMEM;
-		goto ehca_rereg_mr_rereg1_exit0;
-	}
-
-	pginfo_save = *pginfo;
-	ret = ehca_set_pagebuf(pginfo, pginfo->num_hwpages, kpage);
-	if (ret) {
-		ehca_err(&shca->ib_device, "set pagebuf failed, e_mr=%p "
-			 "pginfo=%p type=%x num_kpages=%llx num_hwpages=%llx "
-			 "kpage=%p", e_mr, pginfo, pginfo->type,
-			 pginfo->num_kpages, pginfo->num_hwpages, kpage);
-		goto ehca_rereg_mr_rereg1_exit1;
-	}
-	rpage = __pa(kpage);
-	if (!rpage) {
-		ehca_err(&shca->ib_device, "kpage=%p", kpage);
-		ret = -EFAULT;
-		goto ehca_rereg_mr_rereg1_exit1;
-	}
-	h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_mr,
-				      (u64)iova_start, size, hipz_acl,
-				      e_pd->fw_pd, rpage, &hipzout);
-	if (h_ret != H_SUCCESS) {
-		/*
-		 * reregistration unsuccessful, try it again with the 3 hCalls,
-		 * e.g. this is required in case H_MR_CONDITION
-		 * (MW bound or MR is shared)
-		 */
-		ehca_warn(&shca->ib_device, "hipz_h_reregister_pmr failed "
-			  "(Rereg1), h_ret=%lli e_mr=%p", h_ret, e_mr);
-		*pginfo = pginfo_save;
-		ret = -EAGAIN;
-	} else if ((u64 *)hipzout.vaddr != iova_start) {
-		ehca_err(&shca->ib_device, "PHYP changed iova_start in "
-			 "rereg_pmr, iova_start=%p iova_start_out=%llx e_mr=%p "
-			 "mr_handle=%llx lkey=%x lkey_out=%x", iova_start,
-			 hipzout.vaddr, e_mr, e_mr->ipz_mr_handle.handle,
-			 e_mr->ib.ib_mr.lkey, hipzout.lkey);
-		ret = -EFAULT;
-	} else {
-		/*
-		 * successful reregistration
-		 * note: start and start_out are identical for eServer HCAs
-		 */
-		e_mr->num_kpages = pginfo->num_kpages;
-		e_mr->num_hwpages = pginfo->num_hwpages;
-		e_mr->hwpage_size = pginfo->hwpage_size;
-		e_mr->start = iova_start;
-		e_mr->size = size;
-		e_mr->acl = acl;
-		*lkey = hipzout.lkey;
-		*rkey = hipzout.rkey;
-	}
-
-ehca_rereg_mr_rereg1_exit1:
-	ehca_free_fw_ctrlblock(kpage);
-ehca_rereg_mr_rereg1_exit0:
-	if ( ret && (ret != -EAGAIN) )
-		ehca_err(&shca->ib_device, "ret=%i lkey=%x rkey=%x "
-			 "pginfo=%p num_kpages=%llx num_hwpages=%llx",
-			 ret, *lkey, *rkey, pginfo, pginfo->num_kpages,
-			 pginfo->num_hwpages);
-	return ret;
-} /* end ehca_rereg_mr_rereg1() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_rereg_mr(struct ehca_shca *shca,
-		  struct ehca_mr *e_mr,
-		  u64 *iova_start,
-		  u64 size,
-		  int acl,
-		  struct ehca_pd *e_pd,
-		  struct ehca_mr_pginfo *pginfo,
-		  u32 *lkey,
-		  u32 *rkey)
-{
-	int ret = 0;
-	u64 h_ret;
-	int rereg_1_hcall = 1; /* 1: use hipz_h_reregister_pmr directly */
-	int rereg_3_hcall = 0; /* 1: use 3 hipz calls for reregistration */
-
-	/* first determine reregistration hCall(s) */
-	if ((pginfo->num_hwpages > MAX_RPAGES) ||
-	    (e_mr->num_hwpages > MAX_RPAGES) ||
-	    (pginfo->num_hwpages > e_mr->num_hwpages)) {
-		ehca_dbg(&shca->ib_device, "Rereg3 case, "
-			 "pginfo->num_hwpages=%llx e_mr->num_hwpages=%x",
-			 pginfo->num_hwpages, e_mr->num_hwpages);
-		rereg_1_hcall = 0;
-		rereg_3_hcall = 1;
-	}
-
-	if (e_mr->flags & EHCA_MR_FLAG_MAXMR) {	/* check for max-MR */
-		rereg_1_hcall = 0;
-		rereg_3_hcall = 1;
-		e_mr->flags &= ~EHCA_MR_FLAG_MAXMR;
-		ehca_err(&shca->ib_device, "Rereg MR for max-MR! e_mr=%p",
-			 e_mr);
-	}
-
-	if (rereg_1_hcall) {
-		ret = ehca_rereg_mr_rereg1(shca, e_mr, iova_start, size,
-					   acl, e_pd, pginfo, lkey, rkey);
-		if (ret) {
-			if (ret == -EAGAIN)
-				rereg_3_hcall = 1;
-			else
-				goto ehca_rereg_mr_exit0;
-		}
-	}
-
-	if (rereg_3_hcall) {
-		struct ehca_mr save_mr;
-
-		/* first deregister old MR */
-		h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_mr);
-		if (h_ret != H_SUCCESS) {
-			ehca_err(&shca->ib_device, "hipz_free_mr failed, "
-				 "h_ret=%lli e_mr=%p hca_hndl=%llx mr_hndl=%llx "
-				 "mr->lkey=%x",
-				 h_ret, e_mr, shca->ipz_hca_handle.handle,
-				 e_mr->ipz_mr_handle.handle,
-				 e_mr->ib.ib_mr.lkey);
-			ret = ehca2ib_return_code(h_ret);
-			goto ehca_rereg_mr_exit0;
-		}
-		/* clean ehca_mr_t, without changing struct ib_mr and lock */
-		save_mr = *e_mr;
-		ehca_mr_deletenew(e_mr);
-
-		/* set some MR values */
-		e_mr->flags = save_mr.flags;
-		e_mr->hwpage_size = save_mr.hwpage_size;
-		e_mr->fmr_page_size = save_mr.fmr_page_size;
-		e_mr->fmr_max_pages = save_mr.fmr_max_pages;
-		e_mr->fmr_max_maps = save_mr.fmr_max_maps;
-		e_mr->fmr_map_cnt = save_mr.fmr_map_cnt;
-
-		ret = ehca_reg_mr(shca, e_mr, iova_start, size, acl,
-				  e_pd, pginfo, lkey, rkey, EHCA_REG_MR);
-		if (ret) {
-			u32 offset = (u64)(&e_mr->flags) - (u64)e_mr;
-			memcpy(&e_mr->flags, &(save_mr.flags),
-			       sizeof(struct ehca_mr) - offset);
-			goto ehca_rereg_mr_exit0;
-		}
-	}
-
-ehca_rereg_mr_exit0:
-	if (ret)
-		ehca_err(&shca->ib_device, "ret=%i shca=%p e_mr=%p "
-			 "iova_start=%p size=%llx acl=%x e_pd=%p pginfo=%p "
-			 "num_kpages=%llx lkey=%x rkey=%x rereg_1_hcall=%x "
-			 "rereg_3_hcall=%x", ret, shca, e_mr, iova_start, size,
-			 acl, e_pd, pginfo, pginfo->num_kpages, *lkey, *rkey,
-			 rereg_1_hcall, rereg_3_hcall);
-	return ret;
-} /* end ehca_rereg_mr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_unmap_one_fmr(struct ehca_shca *shca,
-		       struct ehca_mr *e_fmr)
-{
-	int ret = 0;
-	u64 h_ret;
-	struct ehca_pd *e_pd =
-		container_of(e_fmr->ib.ib_fmr.pd, struct ehca_pd, ib_pd);
-	struct ehca_mr save_fmr;
-	u32 tmp_lkey, tmp_rkey;
-	struct ehca_mr_pginfo pginfo;
-	struct ehca_mr_hipzout_parms hipzout;
-	struct ehca_mr save_mr;
-
-	if (e_fmr->fmr_max_pages <= MAX_RPAGES) {
-		/*
-		 * note: after using rereg hcall with len=0,
-		 * rereg hcall must be used again for registering pages
-		 */
-		h_ret = hipz_h_reregister_pmr(shca->ipz_hca_handle, e_fmr, 0,
-					      0, 0, e_pd->fw_pd, 0, &hipzout);
-		if (h_ret == H_SUCCESS) {
-			/* successful reregistration */
-			e_fmr->start = NULL;
-			e_fmr->size = 0;
-			tmp_lkey = hipzout.lkey;
-			tmp_rkey = hipzout.rkey;
-			return 0;
-		}
-		/*
-		 * should not happen, because length checked above,
-		 * FMRs are not shared and no MW bound to FMRs
-		 */
-		ehca_err(&shca->ib_device, "hipz_reregister_pmr failed "
-			 "(Rereg1), h_ret=%lli e_fmr=%p hca_hndl=%llx "
-			 "mr_hndl=%llx lkey=%x lkey_out=%x",
-			 h_ret, e_fmr, shca->ipz_hca_handle.handle,
-			 e_fmr->ipz_mr_handle.handle,
-			 e_fmr->ib.ib_fmr.lkey, hipzout.lkey);
-		/* try free and rereg */
-	}
-
-	/* first free old FMR */
-	h_ret = hipz_h_free_resource_mr(shca->ipz_hca_handle, e_fmr);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(&shca->ib_device, "hipz_free_mr failed, "
-			 "h_ret=%lli e_fmr=%p hca_hndl=%llx mr_hndl=%llx "
-			 "lkey=%x",
-			 h_ret, e_fmr, shca->ipz_hca_handle.handle,
-			 e_fmr->ipz_mr_handle.handle,
-			 e_fmr->ib.ib_fmr.lkey);
-		ret = ehca2ib_return_code(h_ret);
-		goto ehca_unmap_one_fmr_exit0;
-	}
-	/* clean ehca_mr_t, without changing lock */
-	save_fmr = *e_fmr;
-	ehca_mr_deletenew(e_fmr);
-
-	/* set some MR values */
-	e_fmr->flags = save_fmr.flags;
-	e_fmr->hwpage_size = save_fmr.hwpage_size;
-	e_fmr->fmr_page_size = save_fmr.fmr_page_size;
-	e_fmr->fmr_max_pages = save_fmr.fmr_max_pages;
-	e_fmr->fmr_max_maps = save_fmr.fmr_max_maps;
-	e_fmr->fmr_map_cnt = save_fmr.fmr_map_cnt;
-	e_fmr->acl = save_fmr.acl;
-
-	memset(&pginfo, 0, sizeof(pginfo));
-	pginfo.type = EHCA_MR_PGI_FMR;
-	ret = ehca_reg_mr(shca, e_fmr, NULL,
-			  (e_fmr->fmr_max_pages * e_fmr->fmr_page_size),
-			  e_fmr->acl, e_pd, &pginfo, &tmp_lkey,
-			  &tmp_rkey, EHCA_REG_MR);
-	if (ret) {
-		u32 offset = (u64)(&e_fmr->flags) - (u64)e_fmr;
-		memcpy(&e_fmr->flags, &(save_mr.flags),
-		       sizeof(struct ehca_mr) - offset);
-	}
-
-ehca_unmap_one_fmr_exit0:
-	if (ret)
-		ehca_err(&shca->ib_device, "ret=%i tmp_lkey=%x tmp_rkey=%x "
-			 "fmr_max_pages=%x",
-			 ret, tmp_lkey, tmp_rkey, e_fmr->fmr_max_pages);
-	return ret;
-} /* end ehca_unmap_one_fmr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_reg_smr(struct ehca_shca *shca,
-		 struct ehca_mr *e_origmr,
-		 struct ehca_mr *e_newmr,
-		 u64 *iova_start,
-		 int acl,
-		 struct ehca_pd *e_pd,
-		 u32 *lkey, /*OUT*/
-		 u32 *rkey) /*OUT*/
-{
-	int ret = 0;
-	u64 h_ret;
-	u32 hipz_acl;
-	struct ehca_mr_hipzout_parms hipzout;
-
-	ehca_mrmw_map_acl(acl, &hipz_acl);
-	ehca_mrmw_set_pgsize_hipz_acl(e_origmr->hwpage_size, &hipz_acl);
-
-	h_ret = hipz_h_register_smr(shca->ipz_hca_handle, e_newmr, e_origmr,
-				    (u64)iova_start, hipz_acl, e_pd->fw_pd,
-				    &hipzout);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(&shca->ib_device, "hipz_reg_smr failed, h_ret=%lli "
-			 "shca=%p e_origmr=%p e_newmr=%p iova_start=%p acl=%x "
-			 "e_pd=%p hca_hndl=%llx mr_hndl=%llx lkey=%x",
-			 h_ret, shca, e_origmr, e_newmr, iova_start, acl, e_pd,
-			 shca->ipz_hca_handle.handle,
-			 e_origmr->ipz_mr_handle.handle,
-			 e_origmr->ib.ib_mr.lkey);
-		ret = ehca2ib_return_code(h_ret);
-		goto ehca_reg_smr_exit0;
-	}
-	/* successful registration */
-	e_newmr->num_kpages = e_origmr->num_kpages;
-	e_newmr->num_hwpages = e_origmr->num_hwpages;
-	e_newmr->hwpage_size   = e_origmr->hwpage_size;
-	e_newmr->start = iova_start;
-	e_newmr->size = e_origmr->size;
-	e_newmr->acl = acl;
-	e_newmr->ipz_mr_handle = hipzout.handle;
-	*lkey = hipzout.lkey;
-	*rkey = hipzout.rkey;
-	return 0;
-
-ehca_reg_smr_exit0:
-	if (ret)
-		ehca_err(&shca->ib_device, "ret=%i shca=%p e_origmr=%p "
-			 "e_newmr=%p iova_start=%p acl=%x e_pd=%p",
-			 ret, shca, e_origmr, e_newmr, iova_start, acl, e_pd);
-	return ret;
-} /* end ehca_reg_smr() */
-
-/*----------------------------------------------------------------------*/
-static inline void *ehca_calc_sectbase(int top, int dir, int idx)
-{
-	unsigned long ret = idx;
-	ret |= dir << EHCA_DIR_INDEX_SHIFT;
-	ret |= top << EHCA_TOP_INDEX_SHIFT;
-	return __va(ret << SECTION_SIZE_BITS);
-}
-
-#define ehca_bmap_valid(entry) \
-	((u64)entry != (u64)EHCA_INVAL_ADDR)
-
-static u64 ehca_reg_mr_section(int top, int dir, int idx, u64 *kpage,
-			       struct ehca_shca *shca, struct ehca_mr *mr,
-			       struct ehca_mr_pginfo *pginfo)
-{
-	u64 h_ret = 0;
-	unsigned long page = 0;
-	u64 rpage = __pa(kpage);
-	int page_count;
-
-	void *sectbase = ehca_calc_sectbase(top, dir, idx);
-	if ((unsigned long)sectbase & (pginfo->hwpage_size - 1)) {
-		ehca_err(&shca->ib_device, "reg_mr_section will probably fail:"
-					   "hwpage_size does not fit to "
-					   "section start address");
-	}
-	page_count = EHCA_SECTSIZE / pginfo->hwpage_size;
-
-	while (page < page_count) {
-		u64 rnum;
-		for (rnum = 0; (rnum < MAX_RPAGES) && (page < page_count);
-		     rnum++) {
-			void *pg = sectbase + ((page++) * pginfo->hwpage_size);
-			kpage[rnum] = __pa(pg);
-		}
-
-		h_ret = hipz_h_register_rpage_mr(shca->ipz_hca_handle, mr,
-			ehca_encode_hwpage_size(pginfo->hwpage_size),
-			0, rpage, rnum);
-
-		if ((h_ret != H_SUCCESS) && (h_ret != H_PAGE_REGISTERED)) {
-			ehca_err(&shca->ib_device, "register_rpage_mr failed");
-			return h_ret;
-		}
-	}
-	return h_ret;
-}
-
-static u64 ehca_reg_mr_sections(int top, int dir, u64 *kpage,
-				struct ehca_shca *shca, struct ehca_mr *mr,
-				struct ehca_mr_pginfo *pginfo)
-{
-	u64 hret = H_SUCCESS;
-	int idx;
-
-	for (idx = 0; idx < EHCA_MAP_ENTRIES; idx++) {
-		if (!ehca_bmap_valid(ehca_bmap->top[top]->dir[dir]->ent[idx]))
-			continue;
-
-		hret = ehca_reg_mr_section(top, dir, idx, kpage, shca, mr,
-					   pginfo);
-		if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED))
-				return hret;
-	}
-	return hret;
-}
-
-static u64 ehca_reg_mr_dir_sections(int top, u64 *kpage, struct ehca_shca *shca,
-				    struct ehca_mr *mr,
-				    struct ehca_mr_pginfo *pginfo)
-{
-	u64 hret = H_SUCCESS;
-	int dir;
-
-	for (dir = 0; dir < EHCA_MAP_ENTRIES; dir++) {
-		if (!ehca_bmap_valid(ehca_bmap->top[top]->dir[dir]))
-			continue;
-
-		hret = ehca_reg_mr_sections(top, dir, kpage, shca, mr, pginfo);
-		if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED))
-				return hret;
-	}
-	return hret;
-}
-
-/* register internal max-MR to internal SHCA */
-int ehca_reg_internal_maxmr(
-	struct ehca_shca *shca,
-	struct ehca_pd *e_pd,
-	struct ehca_mr **e_maxmr)  /*OUT*/
-{
-	int ret;
-	struct ehca_mr *e_mr;
-	u64 *iova_start;
-	u64 size_maxmr;
-	struct ehca_mr_pginfo pginfo;
-	struct ib_phys_buf ib_pbuf;
-	u32 num_kpages;
-	u32 num_hwpages;
-	u64 hw_pgsize;
-
-	if (!ehca_bmap) {
-		ret = -EFAULT;
-		goto ehca_reg_internal_maxmr_exit0;
-	}
-
-	e_mr = ehca_mr_new();
-	if (!e_mr) {
-		ehca_err(&shca->ib_device, "out of memory");
-		ret = -ENOMEM;
-		goto ehca_reg_internal_maxmr_exit0;
-	}
-	e_mr->flags |= EHCA_MR_FLAG_MAXMR;
-
-	/* register internal max-MR on HCA */
-	size_maxmr = ehca_mr_len;
-	iova_start = (u64 *)ehca_map_vaddr((void *)(KERNELBASE + PHYSICAL_START));
-	ib_pbuf.addr = 0;
-	ib_pbuf.size = size_maxmr;
-	num_kpages = NUM_CHUNKS(((u64)iova_start % PAGE_SIZE) + size_maxmr,
-				PAGE_SIZE);
-	hw_pgsize = ehca_get_max_hwpage_size(shca);
-	num_hwpages = NUM_CHUNKS(((u64)iova_start % hw_pgsize) + size_maxmr,
-				 hw_pgsize);
-
-	memset(&pginfo, 0, sizeof(pginfo));
-	pginfo.type = EHCA_MR_PGI_PHYS;
-	pginfo.num_kpages = num_kpages;
-	pginfo.num_hwpages = num_hwpages;
-	pginfo.hwpage_size = hw_pgsize;
-	pginfo.u.phy.num_phys_buf = 1;
-	pginfo.u.phy.phys_buf_array = &ib_pbuf;
-
-	ret = ehca_reg_mr(shca, e_mr, iova_start, size_maxmr, 0, e_pd,
-			  &pginfo, &e_mr->ib.ib_mr.lkey,
-			  &e_mr->ib.ib_mr.rkey, EHCA_REG_BUSMAP_MR);
-	if (ret) {
-		ehca_err(&shca->ib_device, "reg of internal max MR failed, "
-			 "e_mr=%p iova_start=%p size_maxmr=%llx num_kpages=%x "
-			 "num_hwpages=%x", e_mr, iova_start, size_maxmr,
-			 num_kpages, num_hwpages);
-		goto ehca_reg_internal_maxmr_exit1;
-	}
-
-	/* successful registration of all pages */
-	e_mr->ib.ib_mr.device = e_pd->ib_pd.device;
-	e_mr->ib.ib_mr.pd = &e_pd->ib_pd;
-	e_mr->ib.ib_mr.uobject = NULL;
-	atomic_inc(&(e_pd->ib_pd.usecnt));
-	atomic_set(&(e_mr->ib.ib_mr.usecnt), 0);
-	*e_maxmr = e_mr;
-	return 0;
-
-ehca_reg_internal_maxmr_exit1:
-	ehca_mr_delete(e_mr);
-ehca_reg_internal_maxmr_exit0:
-	if (ret)
-		ehca_err(&shca->ib_device, "ret=%i shca=%p e_pd=%p e_maxmr=%p",
-			 ret, shca, e_pd, e_maxmr);
-	return ret;
-} /* end ehca_reg_internal_maxmr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_reg_maxmr(struct ehca_shca *shca,
-		   struct ehca_mr *e_newmr,
-		   u64 *iova_start,
-		   int acl,
-		   struct ehca_pd *e_pd,
-		   u32 *lkey,
-		   u32 *rkey)
-{
-	u64 h_ret;
-	struct ehca_mr *e_origmr = shca->maxmr;
-	u32 hipz_acl;
-	struct ehca_mr_hipzout_parms hipzout;
-
-	ehca_mrmw_map_acl(acl, &hipz_acl);
-	ehca_mrmw_set_pgsize_hipz_acl(e_origmr->hwpage_size, &hipz_acl);
-
-	h_ret = hipz_h_register_smr(shca->ipz_hca_handle, e_newmr, e_origmr,
-				    (u64)iova_start, hipz_acl, e_pd->fw_pd,
-				    &hipzout);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(&shca->ib_device, "hipz_reg_smr failed, h_ret=%lli "
-			 "e_origmr=%p hca_hndl=%llx mr_hndl=%llx lkey=%x",
-			 h_ret, e_origmr, shca->ipz_hca_handle.handle,
-			 e_origmr->ipz_mr_handle.handle,
-			 e_origmr->ib.ib_mr.lkey);
-		return ehca2ib_return_code(h_ret);
-	}
-	/* successful registration */
-	e_newmr->num_kpages = e_origmr->num_kpages;
-	e_newmr->num_hwpages = e_origmr->num_hwpages;
-	e_newmr->hwpage_size = e_origmr->hwpage_size;
-	e_newmr->start = iova_start;
-	e_newmr->size = e_origmr->size;
-	e_newmr->acl = acl;
-	e_newmr->ipz_mr_handle = hipzout.handle;
-	*lkey = hipzout.lkey;
-	*rkey = hipzout.rkey;
-	return 0;
-} /* end ehca_reg_maxmr() */
-
-/*----------------------------------------------------------------------*/
-
-int ehca_dereg_internal_maxmr(struct ehca_shca *shca)
-{
-	int ret;
-	struct ehca_mr *e_maxmr;
-	struct ib_pd *ib_pd;
-
-	if (!shca->maxmr) {
-		ehca_err(&shca->ib_device, "bad call, shca=%p", shca);
-		ret = -EINVAL;
-		goto ehca_dereg_internal_maxmr_exit0;
-	}
-
-	e_maxmr = shca->maxmr;
-	ib_pd = e_maxmr->ib.ib_mr.pd;
-	shca->maxmr = NULL; /* remove internal max-MR indication from SHCA */
-
-	ret = ehca_dereg_mr(&e_maxmr->ib.ib_mr);
-	if (ret) {
-		ehca_err(&shca->ib_device, "dereg internal max-MR failed, "
-			 "ret=%i e_maxmr=%p shca=%p lkey=%x",
-			 ret, e_maxmr, shca, e_maxmr->ib.ib_mr.lkey);
-		shca->maxmr = e_maxmr;
-		goto ehca_dereg_internal_maxmr_exit0;
-	}
-
-	atomic_dec(&ib_pd->usecnt);
-
-ehca_dereg_internal_maxmr_exit0:
-	if (ret)
-		ehca_err(&shca->ib_device, "ret=%i shca=%p shca->maxmr=%p",
-			 ret, shca, shca->maxmr);
-	return ret;
-} /* end ehca_dereg_internal_maxmr() */
-
-/*----------------------------------------------------------------------*/
-
-/*
- * check physical buffer array of MR verbs for validness and
- * calculates MR size
- */
-int ehca_mr_chk_buf_and_calc_size(struct ib_phys_buf *phys_buf_array,
-				  int num_phys_buf,
-				  u64 *iova_start,
-				  u64 *size)
-{
-	struct ib_phys_buf *pbuf = phys_buf_array;
-	u64 size_count = 0;
-	u32 i;
-
-	if (num_phys_buf == 0) {
-		ehca_gen_err("bad phys buf array len, num_phys_buf=0");
-		return -EINVAL;
-	}
-	/* check first buffer */
-	if (((u64)iova_start & ~PAGE_MASK) != (pbuf->addr & ~PAGE_MASK)) {
-		ehca_gen_err("iova_start/addr mismatch, iova_start=%p "
-			     "pbuf->addr=%llx pbuf->size=%llx",
-			     iova_start, pbuf->addr, pbuf->size);
-		return -EINVAL;
-	}
-	if (((pbuf->addr + pbuf->size) % PAGE_SIZE) &&
-	    (num_phys_buf > 1)) {
-		ehca_gen_err("addr/size mismatch in 1st buf, pbuf->addr=%llx "
-			     "pbuf->size=%llx", pbuf->addr, pbuf->size);
-		return -EINVAL;
-	}
-
-	for (i = 0; i < num_phys_buf; i++) {
-		if ((i > 0) && (pbuf->addr % PAGE_SIZE)) {
-			ehca_gen_err("bad address, i=%x pbuf->addr=%llx "
-				     "pbuf->size=%llx",
-				     i, pbuf->addr, pbuf->size);
-			return -EINVAL;
-		}
-		if (((i > 0) &&	/* not 1st */
-		     (i < (num_phys_buf - 1)) &&	/* not last */
-		     (pbuf->size % PAGE_SIZE)) || (pbuf->size == 0)) {
-			ehca_gen_err("bad size, i=%x pbuf->size=%llx",
-				     i, pbuf->size);
-			return -EINVAL;
-		}
-		size_count += pbuf->size;
-		pbuf++;
-	}
-
-	*size = size_count;
-	return 0;
-} /* end ehca_mr_chk_buf_and_calc_size() */
-
-/*----------------------------------------------------------------------*/
-
-/* check page list of map FMR verb for validness */
-int ehca_fmr_check_page_list(struct ehca_mr *e_fmr,
-			     u64 *page_list,
-			     int list_len)
-{
-	u32 i;
-	u64 *page;
-
-	if ((list_len == 0) || (list_len > e_fmr->fmr_max_pages)) {
-		ehca_gen_err("bad list_len, list_len=%x "
-			     "e_fmr->fmr_max_pages=%x fmr=%p",
-			     list_len, e_fmr->fmr_max_pages, e_fmr);
-		return -EINVAL;
-	}
-
-	/* each page must be aligned */
-	page = page_list;
-	for (i = 0; i < list_len; i++) {
-		if (*page % e_fmr->fmr_page_size) {
-			ehca_gen_err("bad page, i=%x *page=%llx page=%p fmr=%p "
-				     "fmr_page_size=%x", i, *page, page, e_fmr,
-				     e_fmr->fmr_page_size);
-			return -EINVAL;
-		}
-		page++;
-	}
-
-	return 0;
-} /* end ehca_fmr_check_page_list() */
-
-/*----------------------------------------------------------------------*/
-
-/* PAGE_SIZE >= pginfo->hwpage_size */
-static int ehca_set_pagebuf_user1(struct ehca_mr_pginfo *pginfo,
-				  u32 number,
-				  u64 *kpage)
-{
-	int ret = 0;
-	u64 pgaddr;
-	u32 j = 0;
-	int hwpages_per_kpage = PAGE_SIZE / pginfo->hwpage_size;
-	struct scatterlist **sg = &pginfo->u.usr.next_sg;
-
-	while (*sg != NULL) {
-		pgaddr = page_to_pfn(sg_page(*sg))
-			<< PAGE_SHIFT;
-		*kpage = pgaddr + (pginfo->next_hwpage *
-				   pginfo->hwpage_size);
-		if (!(*kpage)) {
-			ehca_gen_err("pgaddr=%llx "
-				     "sg_dma_address=%llx "
-				     "entry=%llx next_hwpage=%llx",
-				     pgaddr, (u64)sg_dma_address(*sg),
-				     pginfo->u.usr.next_nmap,
-				     pginfo->next_hwpage);
-			return -EFAULT;
-		}
-		(pginfo->hwpage_cnt)++;
-		(pginfo->next_hwpage)++;
-		kpage++;
-		if (pginfo->next_hwpage % hwpages_per_kpage == 0) {
-			(pginfo->kpage_cnt)++;
-			(pginfo->u.usr.next_nmap)++;
-			pginfo->next_hwpage = 0;
-			*sg = sg_next(*sg);
-		}
-		j++;
-		if (j >= number)
-			break;
-	}
-
-	return ret;
-}
-
-/*
- * check given pages for contiguous layout
- * last page addr is returned in prev_pgaddr for further check
- */
-static int ehca_check_kpages_per_ate(struct scatterlist **sg,
-				     int num_pages,
-				     u64 *prev_pgaddr)
-{
-	for (; *sg && num_pages > 0; *sg = sg_next(*sg), num_pages--) {
-		u64 pgaddr = page_to_pfn(sg_page(*sg)) << PAGE_SHIFT;
-		if (ehca_debug_level >= 3)
-			ehca_gen_dbg("chunk_page=%llx value=%016llx", pgaddr,
-				     *(u64 *)__va(pgaddr));
-		if (pgaddr - PAGE_SIZE != *prev_pgaddr) {
-			ehca_gen_err("uncontiguous page found pgaddr=%llx "
-				     "prev_pgaddr=%llx entries_left_in_hwpage=%x",
-				     pgaddr, *prev_pgaddr, num_pages);
-			return -EINVAL;
-		}
-		*prev_pgaddr = pgaddr;
-	}
-	return 0;
-}
-
-/* PAGE_SIZE < pginfo->hwpage_size */
-static int ehca_set_pagebuf_user2(struct ehca_mr_pginfo *pginfo,
-				  u32 number,
-				  u64 *kpage)
-{
-	int ret = 0;
-	u64 pgaddr, prev_pgaddr;
-	u32 j = 0;
-	int kpages_per_hwpage = pginfo->hwpage_size / PAGE_SIZE;
-	int nr_kpages = kpages_per_hwpage;
-	struct scatterlist **sg = &pginfo->u.usr.next_sg;
-
-	while (*sg != NULL) {
-
-		if (nr_kpages == kpages_per_hwpage) {
-			pgaddr = (page_to_pfn(sg_page(*sg))
-				   << PAGE_SHIFT);
-			*kpage = pgaddr;
-			if (!(*kpage)) {
-				ehca_gen_err("pgaddr=%llx entry=%llx",
-					     pgaddr, pginfo->u.usr.next_nmap);
-				ret = -EFAULT;
-				return ret;
-			}
-			/*
-			 * The first page in a hwpage must be aligned;
-			 * the first MR page is exempt from this rule.
-			 */
-			if (pgaddr & (pginfo->hwpage_size - 1)) {
-				if (pginfo->hwpage_cnt) {
-					ehca_gen_err(
-						"invalid alignment "
-						"pgaddr=%llx entry=%llx "
-						"mr_pgsize=%llx",
-						pgaddr, pginfo->u.usr.next_nmap,
-						pginfo->hwpage_size);
-					ret = -EFAULT;
-					return ret;
-				}
-				/* first MR page */
-				pginfo->kpage_cnt =
-					(pgaddr &
-					 (pginfo->hwpage_size - 1)) >>
-					PAGE_SHIFT;
-				nr_kpages -= pginfo->kpage_cnt;
-				*kpage = pgaddr &
-					 ~(pginfo->hwpage_size - 1);
-			}
-			if (ehca_debug_level >= 3) {
-				u64 val = *(u64 *)__va(pgaddr);
-				ehca_gen_dbg("kpage=%llx page=%llx "
-					     "value=%016llx",
-					     *kpage, pgaddr, val);
-			}
-			prev_pgaddr = pgaddr;
-			*sg = sg_next(*sg);
-			pginfo->kpage_cnt++;
-			pginfo->u.usr.next_nmap++;
-			nr_kpages--;
-			if (!nr_kpages)
-				goto next_kpage;
-			continue;
-		}
-
-		ret = ehca_check_kpages_per_ate(sg, nr_kpages,
-						&prev_pgaddr);
-		if (ret)
-			return ret;
-		pginfo->kpage_cnt += nr_kpages;
-		pginfo->u.usr.next_nmap += nr_kpages;
-
-next_kpage:
-		nr_kpages = kpages_per_hwpage;
-		(pginfo->hwpage_cnt)++;
-		kpage++;
-		j++;
-		if (j >= number)
-			break;
-	}
-
-	return ret;
-}
-
-static int ehca_set_pagebuf_phys(struct ehca_mr_pginfo *pginfo,
-				 u32 number, u64 *kpage)
-{
-	int ret = 0;
-	struct ib_phys_buf *pbuf;
-	u64 num_hw, offs_hw;
-	u32 i = 0;
-
-	/* loop over desired phys_buf_array entries */
-	while (i < number) {
-		pbuf   = pginfo->u.phy.phys_buf_array + pginfo->u.phy.next_buf;
-		num_hw  = NUM_CHUNKS((pbuf->addr % pginfo->hwpage_size) +
-				     pbuf->size, pginfo->hwpage_size);
-		offs_hw = (pbuf->addr & ~(pginfo->hwpage_size - 1)) /
-			pginfo->hwpage_size;
-		while (pginfo->next_hwpage < offs_hw + num_hw) {
-			/* sanity check */
-			if ((pginfo->kpage_cnt >= pginfo->num_kpages) ||
-			    (pginfo->hwpage_cnt >= pginfo->num_hwpages)) {
-				ehca_gen_err("kpage_cnt >= num_kpages, "
-					     "kpage_cnt=%llx num_kpages=%llx "
-					     "hwpage_cnt=%llx "
-					     "num_hwpages=%llx i=%x",
-					     pginfo->kpage_cnt,
-					     pginfo->num_kpages,
-					     pginfo->hwpage_cnt,
-					     pginfo->num_hwpages, i);
-				return -EFAULT;
-			}
-			*kpage = (pbuf->addr & ~(pginfo->hwpage_size - 1)) +
-				 (pginfo->next_hwpage * pginfo->hwpage_size);
-			if ( !(*kpage) && pbuf->addr ) {
-				ehca_gen_err("pbuf->addr=%llx pbuf->size=%llx "
-					     "next_hwpage=%llx", pbuf->addr,
-					     pbuf->size, pginfo->next_hwpage);
-				return -EFAULT;
-			}
-			(pginfo->hwpage_cnt)++;
-			(pginfo->next_hwpage)++;
-			if (PAGE_SIZE >= pginfo->hwpage_size) {
-				if (pginfo->next_hwpage %
-				    (PAGE_SIZE / pginfo->hwpage_size) == 0)
-					(pginfo->kpage_cnt)++;
-			} else
-				pginfo->kpage_cnt += pginfo->hwpage_size /
-					PAGE_SIZE;
-			kpage++;
-			i++;
-			if (i >= number) break;
-		}
-		if (pginfo->next_hwpage >= offs_hw + num_hw) {
-			(pginfo->u.phy.next_buf)++;
-			pginfo->next_hwpage = 0;
-		}
-	}
-	return ret;
-}
-
-static int ehca_set_pagebuf_fmr(struct ehca_mr_pginfo *pginfo,
-				u32 number, u64 *kpage)
-{
-	int ret = 0;
-	u64 *fmrlist;
-	u32 i;
-
-	/* loop over desired page_list entries */
-	fmrlist = pginfo->u.fmr.page_list + pginfo->u.fmr.next_listelem;
-	for (i = 0; i < number; i++) {
-		*kpage = (*fmrlist & ~(pginfo->hwpage_size - 1)) +
-			   pginfo->next_hwpage * pginfo->hwpage_size;
-		if ( !(*kpage) ) {
-			ehca_gen_err("*fmrlist=%llx fmrlist=%p "
-				     "next_listelem=%llx next_hwpage=%llx",
-				     *fmrlist, fmrlist,
-				     pginfo->u.fmr.next_listelem,
-				     pginfo->next_hwpage);
-			return -EFAULT;
-		}
-		(pginfo->hwpage_cnt)++;
-		if (pginfo->u.fmr.fmr_pgsize >= pginfo->hwpage_size) {
-			if (pginfo->next_hwpage %
-			    (pginfo->u.fmr.fmr_pgsize /
-			     pginfo->hwpage_size) == 0) {
-				(pginfo->kpage_cnt)++;
-				(pginfo->u.fmr.next_listelem)++;
-				fmrlist++;
-				pginfo->next_hwpage = 0;
-			} else
-				(pginfo->next_hwpage)++;
-		} else {
-			unsigned int cnt_per_hwpage = pginfo->hwpage_size /
-				pginfo->u.fmr.fmr_pgsize;
-			unsigned int j;
-			u64 prev = *kpage;
-			/* check if adrs are contiguous */
-			for (j = 1; j < cnt_per_hwpage; j++) {
-				u64 p = fmrlist[j] & ~(pginfo->hwpage_size - 1);
-				if (prev + pginfo->u.fmr.fmr_pgsize != p) {
-					ehca_gen_err("uncontiguous fmr pages "
-						     "found prev=%llx p=%llx "
-						     "idx=%x", prev, p, i + j);
-					return -EINVAL;
-				}
-				prev = p;
-			}
-			pginfo->kpage_cnt += cnt_per_hwpage;
-			pginfo->u.fmr.next_listelem += cnt_per_hwpage;
-			fmrlist += cnt_per_hwpage;
-		}
-		kpage++;
-	}
-	return ret;
-}
-
-/* setup page buffer from page info */
-int ehca_set_pagebuf(struct ehca_mr_pginfo *pginfo,
-		     u32 number,
-		     u64 *kpage)
-{
-	int ret;
-
-	switch (pginfo->type) {
-	case EHCA_MR_PGI_PHYS:
-		ret = ehca_set_pagebuf_phys(pginfo, number, kpage);
-		break;
-	case EHCA_MR_PGI_USER:
-		ret = PAGE_SIZE >= pginfo->hwpage_size ?
-			ehca_set_pagebuf_user1(pginfo, number, kpage) :
-			ehca_set_pagebuf_user2(pginfo, number, kpage);
-		break;
-	case EHCA_MR_PGI_FMR:
-		ret = ehca_set_pagebuf_fmr(pginfo, number, kpage);
-		break;
-	default:
-		ehca_gen_err("bad pginfo->type=%x", pginfo->type);
-		ret = -EFAULT;
-		break;
-	}
-	return ret;
-} /* end ehca_set_pagebuf() */
-
-/*----------------------------------------------------------------------*/
-
-/*
- * check MR if it is a max-MR, i.e. uses whole memory
- * in case it's a max-MR 1 is returned, else 0
- */
-int ehca_mr_is_maxmr(u64 size,
-		     u64 *iova_start)
-{
-	/* a MR is treated as max-MR only if it fits following: */
-	if ((size == ehca_mr_len) &&
-	    (iova_start == (void *)ehca_map_vaddr((void *)(KERNELBASE + PHYSICAL_START)))) {
-		ehca_gen_dbg("this is a max-MR");
-		return 1;
-	} else
-		return 0;
-} /* end ehca_mr_is_maxmr() */
-
-/*----------------------------------------------------------------------*/
-
-/* map access control for MR/MW. This routine is used for MR and MW. */
-void ehca_mrmw_map_acl(int ib_acl,
-		       u32 *hipz_acl)
-{
-	*hipz_acl = 0;
-	if (ib_acl & IB_ACCESS_REMOTE_READ)
-		*hipz_acl |= HIPZ_ACCESSCTRL_R_READ;
-	if (ib_acl & IB_ACCESS_REMOTE_WRITE)
-		*hipz_acl |= HIPZ_ACCESSCTRL_R_WRITE;
-	if (ib_acl & IB_ACCESS_REMOTE_ATOMIC)
-		*hipz_acl |= HIPZ_ACCESSCTRL_R_ATOMIC;
-	if (ib_acl & IB_ACCESS_LOCAL_WRITE)
-		*hipz_acl |= HIPZ_ACCESSCTRL_L_WRITE;
-	if (ib_acl & IB_ACCESS_MW_BIND)
-		*hipz_acl |= HIPZ_ACCESSCTRL_MW_BIND;
-} /* end ehca_mrmw_map_acl() */
-
-/*----------------------------------------------------------------------*/
-
-/* sets page size in hipz access control for MR/MW. */
-void ehca_mrmw_set_pgsize_hipz_acl(u32 pgsize, u32 *hipz_acl) /*INOUT*/
-{
-	*hipz_acl |= (ehca_encode_hwpage_size(pgsize) << 24);
-} /* end ehca_mrmw_set_pgsize_hipz_acl() */
-
-/*----------------------------------------------------------------------*/
-
-/*
- * reverse map access control for MR/MW.
- * This routine is used for MR and MW.
- */
-void ehca_mrmw_reverse_map_acl(const u32 *hipz_acl,
-			       int *ib_acl) /*OUT*/
-{
-	*ib_acl = 0;
-	if (*hipz_acl & HIPZ_ACCESSCTRL_R_READ)
-		*ib_acl |= IB_ACCESS_REMOTE_READ;
-	if (*hipz_acl & HIPZ_ACCESSCTRL_R_WRITE)
-		*ib_acl |= IB_ACCESS_REMOTE_WRITE;
-	if (*hipz_acl & HIPZ_ACCESSCTRL_R_ATOMIC)
-		*ib_acl |= IB_ACCESS_REMOTE_ATOMIC;
-	if (*hipz_acl & HIPZ_ACCESSCTRL_L_WRITE)
-		*ib_acl |= IB_ACCESS_LOCAL_WRITE;
-	if (*hipz_acl & HIPZ_ACCESSCTRL_MW_BIND)
-		*ib_acl |= IB_ACCESS_MW_BIND;
-} /* end ehca_mrmw_reverse_map_acl() */
-
-
-/*----------------------------------------------------------------------*/
-
-/*
- * MR destructor and constructor
- * used in Reregister MR verb, sets all fields in ehca_mr_t to 0,
- * except struct ib_mr and spinlock
- */
-void ehca_mr_deletenew(struct ehca_mr *mr)
-{
-	mr->flags = 0;
-	mr->num_kpages = 0;
-	mr->num_hwpages = 0;
-	mr->acl = 0;
-	mr->start = NULL;
-	mr->fmr_page_size = 0;
-	mr->fmr_max_pages = 0;
-	mr->fmr_max_maps = 0;
-	mr->fmr_map_cnt = 0;
-	memset(&mr->ipz_mr_handle, 0, sizeof(mr->ipz_mr_handle));
-	memset(&mr->galpas, 0, sizeof(mr->galpas));
-} /* end ehca_mr_deletenew() */
-
-int ehca_init_mrmw_cache(void)
-{
-	mr_cache = kmem_cache_create("ehca_cache_mr",
-				     sizeof(struct ehca_mr), 0,
-				     SLAB_HWCACHE_ALIGN,
-				     NULL);
-	if (!mr_cache)
-		return -ENOMEM;
-	mw_cache = kmem_cache_create("ehca_cache_mw",
-				     sizeof(struct ehca_mw), 0,
-				     SLAB_HWCACHE_ALIGN,
-				     NULL);
-	if (!mw_cache) {
-		kmem_cache_destroy(mr_cache);
-		mr_cache = NULL;
-		return -ENOMEM;
-	}
-	return 0;
-}
-
-void ehca_cleanup_mrmw_cache(void)
-{
-	if (mr_cache)
-		kmem_cache_destroy(mr_cache);
-	if (mw_cache)
-		kmem_cache_destroy(mw_cache);
-}
-
-static inline int ehca_init_top_bmap(struct ehca_top_bmap *ehca_top_bmap,
-				     int dir)
-{
-	if (!ehca_bmap_valid(ehca_top_bmap->dir[dir])) {
-		ehca_top_bmap->dir[dir] =
-			kmalloc(sizeof(struct ehca_dir_bmap), GFP_KERNEL);
-		if (!ehca_top_bmap->dir[dir])
-			return -ENOMEM;
-		/* Set map block to 0xFF according to EHCA_INVAL_ADDR */
-		memset(ehca_top_bmap->dir[dir], 0xFF, EHCA_ENT_MAP_SIZE);
-	}
-	return 0;
-}
-
-static inline int ehca_init_bmap(struct ehca_bmap *ehca_bmap, int top, int dir)
-{
-	if (!ehca_bmap_valid(ehca_bmap->top[top])) {
-		ehca_bmap->top[top] =
-			kmalloc(sizeof(struct ehca_top_bmap), GFP_KERNEL);
-		if (!ehca_bmap->top[top])
-			return -ENOMEM;
-		/* Set map block to 0xFF according to EHCA_INVAL_ADDR */
-		memset(ehca_bmap->top[top], 0xFF, EHCA_DIR_MAP_SIZE);
-	}
-	return ehca_init_top_bmap(ehca_bmap->top[top], dir);
-}
-
-static inline int ehca_calc_index(unsigned long i, unsigned long s)
-{
-	return (i >> s) & EHCA_INDEX_MASK;
-}
-
-void ehca_destroy_busmap(void)
-{
-	int top, dir;
-
-	if (!ehca_bmap)
-		return;
-
-	for (top = 0; top < EHCA_MAP_ENTRIES; top++) {
-		if (!ehca_bmap_valid(ehca_bmap->top[top]))
-			continue;
-		for (dir = 0; dir < EHCA_MAP_ENTRIES; dir++) {
-			if (!ehca_bmap_valid(ehca_bmap->top[top]->dir[dir]))
-				continue;
-
-			kfree(ehca_bmap->top[top]->dir[dir]);
-		}
-
-		kfree(ehca_bmap->top[top]);
-	}
-
-	kfree(ehca_bmap);
-	ehca_bmap = NULL;
-}
-
-static int ehca_update_busmap(unsigned long pfn, unsigned long nr_pages)
-{
-	unsigned long i, start_section, end_section;
-	int top, dir, idx;
-
-	if (!nr_pages)
-		return 0;
-
-	if (!ehca_bmap) {
-		ehca_bmap = kmalloc(sizeof(struct ehca_bmap), GFP_KERNEL);
-		if (!ehca_bmap)
-			return -ENOMEM;
-		/* Set map block to 0xFF according to EHCA_INVAL_ADDR */
-		memset(ehca_bmap, 0xFF, EHCA_TOP_MAP_SIZE);
-	}
-
-	start_section = (pfn * PAGE_SIZE) / EHCA_SECTSIZE;
-	end_section = ((pfn + nr_pages) * PAGE_SIZE) / EHCA_SECTSIZE;
-	for (i = start_section; i < end_section; i++) {
-		int ret;
-		top = ehca_calc_index(i, EHCA_TOP_INDEX_SHIFT);
-		dir = ehca_calc_index(i, EHCA_DIR_INDEX_SHIFT);
-		idx = i & EHCA_INDEX_MASK;
-
-		ret = ehca_init_bmap(ehca_bmap, top, dir);
-		if (ret) {
-			ehca_destroy_busmap();
-			return ret;
-		}
-		ehca_bmap->top[top]->dir[dir]->ent[idx] = ehca_mr_len;
-		ehca_mr_len += EHCA_SECTSIZE;
-	}
-	return 0;
-}
-
-static int ehca_is_hugepage(unsigned long pfn)
-{
-	int page_order;
-
-	if (pfn & EHCA_HUGEPAGE_PFN_MASK)
-		return 0;
-
-	page_order = compound_order(pfn_to_page(pfn));
-	if (page_order + PAGE_SHIFT != EHCA_HUGEPAGESHIFT)
-		return 0;
-
-	return 1;
-}
-
-static int ehca_create_busmap_callback(unsigned long initial_pfn,
-				       unsigned long total_nr_pages, void *arg)
-{
-	int ret;
-	unsigned long pfn, start_pfn, end_pfn, nr_pages;
-
-	if ((total_nr_pages * PAGE_SIZE) < EHCA_HUGEPAGE_SIZE)
-		return ehca_update_busmap(initial_pfn, total_nr_pages);
-
-	/* Given chunk is >= 16GB -> check for hugepages */
-	start_pfn = initial_pfn;
-	end_pfn = initial_pfn + total_nr_pages;
-	pfn = start_pfn;
-
-	while (pfn < end_pfn) {
-		if (ehca_is_hugepage(pfn)) {
-			/* Add mem found in front of the hugepage */
-			nr_pages = pfn - start_pfn;
-			ret = ehca_update_busmap(start_pfn, nr_pages);
-			if (ret)
-				return ret;
-			/* Skip the hugepage */
-			pfn += (EHCA_HUGEPAGE_SIZE / PAGE_SIZE);
-			start_pfn = pfn;
-		} else
-			pfn += (EHCA_SECTSIZE / PAGE_SIZE);
-	}
-
-	/* Add mem found behind the hugepage(s)  */
-	nr_pages = pfn - start_pfn;
-	return ehca_update_busmap(start_pfn, nr_pages);
-}
-
-int ehca_create_busmap(void)
-{
-	int ret;
-
-	ehca_mr_len = 0;
-	ret = walk_system_ram_range(0, 1ULL << MAX_PHYSMEM_BITS, NULL,
-				   ehca_create_busmap_callback);
-	return ret;
-}
-
-static int ehca_reg_bmap_mr_rpages(struct ehca_shca *shca,
-				   struct ehca_mr *e_mr,
-				   struct ehca_mr_pginfo *pginfo)
-{
-	int top;
-	u64 hret, *kpage;
-
-	kpage = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
-	if (!kpage) {
-		ehca_err(&shca->ib_device, "kpage alloc failed");
-		return -ENOMEM;
-	}
-	for (top = 0; top < EHCA_MAP_ENTRIES; top++) {
-		if (!ehca_bmap_valid(ehca_bmap->top[top]))
-			continue;
-		hret = ehca_reg_mr_dir_sections(top, kpage, shca, e_mr, pginfo);
-		if ((hret != H_PAGE_REGISTERED) && (hret != H_SUCCESS))
-			break;
-	}
-
-	ehca_free_fw_ctrlblock(kpage);
-
-	if (hret == H_SUCCESS)
-		return 0; /* Everything is fine */
-	else {
-		ehca_err(&shca->ib_device, "ehca_reg_bmap_mr_rpages failed, "
-				 "h_ret=%lli e_mr=%p top=%x lkey=%x "
-				 "hca_hndl=%llx mr_hndl=%llx", hret, e_mr, top,
-				 e_mr->ib.ib_mr.lkey,
-				 shca->ipz_hca_handle.handle,
-				 e_mr->ipz_mr_handle.handle);
-		return ehca2ib_return_code(hret);
-	}
-}
-
-static u64 ehca_map_vaddr(void *caddr)
-{
-	int top, dir, idx;
-	unsigned long abs_addr, offset;
-	u64 entry;
-
-	if (!ehca_bmap)
-		return EHCA_INVAL_ADDR;
-
-	abs_addr = __pa(caddr);
-	top = ehca_calc_index(abs_addr, EHCA_TOP_INDEX_SHIFT + EHCA_SECTSHIFT);
-	if (!ehca_bmap_valid(ehca_bmap->top[top]))
-		return EHCA_INVAL_ADDR;
-
-	dir = ehca_calc_index(abs_addr, EHCA_DIR_INDEX_SHIFT + EHCA_SECTSHIFT);
-	if (!ehca_bmap_valid(ehca_bmap->top[top]->dir[dir]))
-		return EHCA_INVAL_ADDR;
-
-	idx = ehca_calc_index(abs_addr, EHCA_SECTSHIFT);
-
-	entry = ehca_bmap->top[top]->dir[dir]->ent[idx];
-	if (ehca_bmap_valid(entry)) {
-		offset = (unsigned long)caddr & (EHCA_SECTSIZE - 1);
-		return entry | offset;
-	} else
-		return EHCA_INVAL_ADDR;
-}
-
-static int ehca_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
-{
-	return dma_addr == EHCA_INVAL_ADDR;
-}
-
-static u64 ehca_dma_map_single(struct ib_device *dev, void *cpu_addr,
-			       size_t size, enum dma_data_direction direction)
-{
-	if (cpu_addr)
-		return ehca_map_vaddr(cpu_addr);
-	else
-		return EHCA_INVAL_ADDR;
-}
-
-static void ehca_dma_unmap_single(struct ib_device *dev, u64 addr, size_t size,
-				  enum dma_data_direction direction)
-{
-	/* This is only a stub; nothing to be done here */
-}
-
-static u64 ehca_dma_map_page(struct ib_device *dev, struct page *page,
-			     unsigned long offset, size_t size,
-			     enum dma_data_direction direction)
-{
-	u64 addr;
-
-	if (offset + size > PAGE_SIZE)
-		return EHCA_INVAL_ADDR;
-
-	addr = ehca_map_vaddr(page_address(page));
-	if (!ehca_dma_mapping_error(dev, addr))
-		addr += offset;
-
-	return addr;
-}
-
-static void ehca_dma_unmap_page(struct ib_device *dev, u64 addr, size_t size,
-				enum dma_data_direction direction)
-{
-	/* This is only a stub; nothing to be done here */
-}
-
-static int ehca_dma_map_sg(struct ib_device *dev, struct scatterlist *sgl,
-			   int nents, enum dma_data_direction direction)
-{
-	struct scatterlist *sg;
-	int i;
-
-	for_each_sg(sgl, sg, nents, i) {
-		u64 addr;
-		addr = ehca_map_vaddr(sg_virt(sg));
-		if (ehca_dma_mapping_error(dev, addr))
-			return 0;
-
-		sg->dma_address = addr;
-		sg->dma_length = sg->length;
-	}
-	return nents;
-}
-
-static void ehca_dma_unmap_sg(struct ib_device *dev, struct scatterlist *sg,
-			      int nents, enum dma_data_direction direction)
-{
-	/* This is only a stub; nothing to be done here */
-}
-
-static void ehca_dma_sync_single_for_cpu(struct ib_device *dev, u64 addr,
-					 size_t size,
-					 enum dma_data_direction dir)
-{
-	dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
-}
-
-static void ehca_dma_sync_single_for_device(struct ib_device *dev, u64 addr,
-					    size_t size,
-					    enum dma_data_direction dir)
-{
-	dma_sync_single_for_device(dev->dma_device, addr, size, dir);
-}
-
-static void *ehca_dma_alloc_coherent(struct ib_device *dev, size_t size,
-				     u64 *dma_handle, gfp_t flag)
-{
-	struct page *p;
-	void *addr = NULL;
-	u64 dma_addr;
-
-	p = alloc_pages(flag, get_order(size));
-	if (p) {
-		addr = page_address(p);
-		dma_addr = ehca_map_vaddr(addr);
-		if (ehca_dma_mapping_error(dev, dma_addr)) {
-			free_pages((unsigned long)addr,	get_order(size));
-			return NULL;
-		}
-		if (dma_handle)
-			*dma_handle = dma_addr;
-		return addr;
-	}
-	return NULL;
-}
-
-static void ehca_dma_free_coherent(struct ib_device *dev, size_t size,
-				   void *cpu_addr, u64 dma_handle)
-{
-	if (cpu_addr && size)
-		free_pages((unsigned long)cpu_addr, get_order(size));
-}
-
-
-struct ib_dma_mapping_ops ehca_dma_mapping_ops = {
-	.mapping_error          = ehca_dma_mapping_error,
-	.map_single             = ehca_dma_map_single,
-	.unmap_single           = ehca_dma_unmap_single,
-	.map_page               = ehca_dma_map_page,
-	.unmap_page             = ehca_dma_unmap_page,
-	.map_sg                 = ehca_dma_map_sg,
-	.unmap_sg               = ehca_dma_unmap_sg,
-	.sync_single_for_cpu    = ehca_dma_sync_single_for_cpu,
-	.sync_single_for_device = ehca_dma_sync_single_for_device,
-	.alloc_coherent         = ehca_dma_alloc_coherent,
-	.free_coherent          = ehca_dma_free_coherent,
-};