lkml.org 
[lkml]   [2006]   [Feb]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 19/22] ehca memory regions
Date
From: Roland Dreier <rolandd@cisco.com>

Nearly all the inline functions in ehca_mrmw.h look too big to
be inlined. Why can't they just be static functions in ehca_mrmw.c?
---

drivers/infiniband/hw/ehca/ehca_mrmw.c | 1711 ++++++++++++++++++++++++++++++++
drivers/infiniband/hw/ehca/ehca_mrmw.h | 739 ++++++++++++++
2 files changed, 2450 insertions(+), 0 deletions(-)

diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c
new file mode 100644
index 0000000..d756082
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c
@@ -0,0 +1,1711 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * MR/MW functions
+ *
+ * Authors: Dietmar Decker <ddecker@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.
+ *
+ * $Id: ehca_mrmw.c,v 1.86 2006/02/07 07:51:13 decker Exp $
+ */
+
+#undef DEB_PREFIX
+#define DEB_PREFIX "mrmw"
+
+#include "ehca_kernel.h"
+#include "ehca_iverbs.h"
+#include "hcp_if.h"
+#include "ehca_mrmw.h"
+
+extern int ehca_use_hp_mr;
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+struct ib_mr *ehca_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
+{
+ struct ib_mr *ib_mr;
+ int retcode = 0;
+ struct ehca_mr *e_maxmr = 0;
+ struct ehca_pd *e_pd;
+ struct ehca_shca *shca;
+
+ EDEB_EN(7, "pd=%p mr_access_flags=%x", pd, mr_access_flags);
+
+ EHCA_CHECK_PD_P(pd);
+ e_pd = container_of(pd, struct ehca_pd, ib_pd);
+ shca = container_of(pd->device, struct ehca_shca, ib_device);
+
+ if (shca->maxmr) {
+ e_maxmr = ehca_mr_new();
+ if (!e_maxmr) {
+ EDEB_ERR(4, "out of memory");
+ ib_mr = ERR_PTR(-ENOMEM);
+ goto get_dma_mr_exit0;
+ }
+
+ retcode = ehca_reg_maxmr(shca, e_maxmr,
+ (u64 *)KERNELBASE,
+ mr_access_flags, e_pd,
+ &e_maxmr->ib.ib_mr.lkey,
+ &e_maxmr->ib.ib_mr.rkey);
+ if (retcode != 0) {
+ ib_mr = ERR_PTR(retcode);
+ goto get_dma_mr_exit0;
+ }
+ ib_mr = &e_maxmr->ib.ib_mr;
+ } else {
+ EDEB_ERR(4, "no internal max-MR exist!");
+ ib_mr = ERR_PTR(-EINVAL);
+ goto get_dma_mr_exit0;
+ }
+
+ get_dma_mr_exit0:
+ if (IS_ERR(ib_mr) == 0)
+ EDEB_EX(7, "ib_mr=%p lkey=%x rkey=%x",
+ ib_mr, ib_mr->lkey, ib_mr->rkey);
+ else
+ EDEB_EX(4, "rc=%lx 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 = 0;
+ int retcode = 0;
+ struct ehca_mr *e_mr = 0;
+ struct ehca_shca *shca = 0;
+ struct ehca_pd *e_pd = 0;
+ u64 size = 0;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,0,0,0,0,0};
+ u32 num_pages_mr = 0;
+
+ EDEB_EN(7, "pd=%p phys_buf_array=%p num_phys_buf=%x "
+ "mr_access_flags=%x iova_start=%p", pd, phys_buf_array,
+ num_phys_buf, mr_access_flags, iova_start);
+
+ EHCA_CHECK_PD_P(pd);
+ if ((num_phys_buf <= 0) || ehca_adr_bad(phys_buf_array)) {
+ EDEB_ERR(4, "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 */
+ EDEB_ERR(4, "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 */
+ retcode = ehca_mr_chk_buf_and_calc_size(phys_buf_array, num_phys_buf,
+ iova_start, &size);
+ if (retcode != 0) {
+ ib_mr = ERR_PTR(retcode);
+ goto reg_phys_mr_exit0;
+ }
+ if ((size == 0) ||
+ ((0xFFFFFFFFFFFFFFFF - size) < (u64)iova_start)) {
+ EDEB_ERR(4, "bad input values: size=%lx iova_start=%p",
+ size, iova_start);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_phys_mr_exit0;
+ }
+
+ e_pd = container_of(pd, struct ehca_pd, ib_pd);
+ shca = container_of(pd->device, struct ehca_shca, ib_device);
+
+ e_mr = ehca_mr_new();
+ if (!e_mr) {
+ EDEB_ERR(4, "out of memory");
+ ib_mr = ERR_PTR(-ENOMEM);
+ goto reg_phys_mr_exit0;
+ }
+
+ /* determine number of MR pages */
+ /* pagesize currently hardcoded to 4k ... TODO.. */
+ num_pages_mr =
+ ((((u64)iova_start % PAGE_SIZE) + size +
+ PAGE_SIZE - 1) / PAGE_SIZE);
+
+ /* register MR on HCA */
+ if (ehca_mr_is_maxmr(size, iova_start)) {
+ e_mr->flags |= EHCA_MR_FLAG_MAXMR;
+ retcode = 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 (retcode != 0) {
+ ib_mr = ERR_PTR(retcode);
+ goto reg_phys_mr_exit1;
+ }
+ } else {
+ pginfo.type = EHCA_MR_PGI_PHYS;
+ pginfo.num_pages = num_pages_mr;
+ pginfo.num_phys_buf = num_phys_buf;
+ pginfo.phys_buf_array = phys_buf_array;
+
+ retcode = 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);
+ if (retcode != 0) {
+ ib_mr = ERR_PTR(retcode);
+ goto reg_phys_mr_exit1;
+ }
+ }
+
+ /* successful registration of all pages */
+ ib_mr = &e_mr->ib.ib_mr;
+ goto reg_phys_mr_exit0;
+
+ reg_phys_mr_exit1:
+ ehca_mr_delete(e_mr);
+ reg_phys_mr_exit0:
+ if (IS_ERR(ib_mr) == 0)
+ EDEB_EX(7, "ib_mr=%p lkey=%x rkey=%x",
+ ib_mr, ib_mr->lkey, ib_mr->rkey);
+ else
+ EDEB_EX(4, "rc=%lx 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,
+ struct ib_umem *region,
+ int mr_access_flags,
+ struct ib_udata *udata)
+{
+ struct ib_mr *ib_mr = 0;
+ struct ehca_mr *e_mr = 0;
+ struct ehca_shca *shca = 0;
+ struct ehca_pd *e_pd = 0;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,0,0,0,0,0};
+ int retcode = 0;
+ u32 num_pages_mr = 0;
+
+ EDEB_EN(7, "pd=%p region=%p mr_access_flags=%x udata=%p",
+ pd, region, mr_access_flags, udata);
+
+ EHCA_CHECK_PD_P(pd);
+ if (ehca_adr_bad(region)) {
+ EDEB_ERR(4, "bad input values: region=%p", region);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_user_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 */
+ EDEB_ERR(4, "bad input values: mr_access_flags=%x",
+ mr_access_flags);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_user_mr_exit0;
+ }
+ EDEB(7, "user_base=%lx virt_base=%lx length=%lx offset=%x page_size=%x "
+ "chunk_list.next=%p",
+ region->user_base, region->virt_base, region->length,
+ region->offset, region->page_size, region->chunk_list.next);
+ if (region->page_size != PAGE_SIZE) {
+ /* @TODO large page support */
+ EDEB_ERR(4, "large pages not supported, region->page_size=%x",
+ region->page_size);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_user_mr_exit0;
+ }
+
+ if ((region->length == 0) ||
+ ((0xFFFFFFFFFFFFFFFF - region->length) < region->virt_base)) {
+ EDEB_ERR(4, "bad input values: length=%lx virt_base=%lx",
+ region->length, region->virt_base);
+ ib_mr = ERR_PTR(-EINVAL);
+ goto reg_user_mr_exit0;
+ }
+
+ e_pd = container_of(pd, struct ehca_pd, ib_pd);
+ shca = container_of(pd->device, struct ehca_shca, ib_device);
+
+ e_mr = ehca_mr_new();
+ if (!e_mr) {
+ EDEB_ERR(4, "out of memory");
+ ib_mr = ERR_PTR(-ENOMEM);
+ goto reg_user_mr_exit0;
+ }
+
+ /* determine number of MR pages */
+ /* pagesize currently hardcoded to 4k ...TODO... */
+ num_pages_mr =
+ (((region->virt_base % PAGE_SIZE) + region->length +
+ PAGE_SIZE - 1) / PAGE_SIZE);
+
+ /* register MR on HCA */
+ pginfo.type = EHCA_MR_PGI_USER;
+ pginfo.num_pages = num_pages_mr;
+ pginfo.region = region;
+ pginfo.next_chunk = list_prepare_entry(pginfo.next_chunk,
+ (&region->chunk_list),
+ list);
+
+ retcode = ehca_reg_mr(shca, e_mr, (u64 *)region->virt_base,
+ region->length, mr_access_flags, e_pd, &pginfo,
+ &e_mr->ib.ib_mr.lkey, &e_mr->ib.ib_mr.rkey);
+ if (retcode != 0) {
+ ib_mr = ERR_PTR(retcode);
+ goto reg_user_mr_exit1;
+ }
+
+ /* successful registration of all pages */
+ ib_mr = &e_mr->ib.ib_mr;
+ goto reg_user_mr_exit0;
+
+ reg_user_mr_exit1:
+ ehca_mr_delete(e_mr);
+ reg_user_mr_exit0:
+ if (IS_ERR(ib_mr) == 0)
+ EDEB_EX(7, "ib_mr=%p lkey=%x rkey=%x",
+ ib_mr, ib_mr->lkey, ib_mr->rkey);
+ else
+ EDEB_EX(4, "rc=%lx pd=%p region=%p mr_access_flags=%x "
+ "udata=%p",
+ PTR_ERR(ib_mr), pd, region, 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 retcode = 0;
+ struct ehca_shca *shca = 0;
+ struct ehca_mr *e_mr = 0;
+ u64 new_size = 0;
+ u64 *new_start = 0;
+ u32 new_acl = 0;
+ struct ehca_pd *new_pd = 0;
+ u32 tmp_lkey = 0;
+ u32 tmp_rkey = 0;
+ unsigned long sl_flags;
+ u64 num_pages_mr = 0;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,0,0,0,0,0};
+
+ EDEB_EN(7, "mr=%p mr_rereg_mask=%x pd=%p phys_buf_array=%p "
+ "num_phys_buf=%x mr_access_flags=%x iova_start=%p",
+ mr, mr_rereg_mask, pd, phys_buf_array, num_phys_buf,
+ mr_access_flags, iova_start);
+
+ if (!(mr_rereg_mask & IB_MR_REREG_TRANS)) {
+ /*@TODO not supported, because PHYP rereg hCall needs pages*/
+ /*@TODO: We will follow this with Tom ....*/
+ EDEB_ERR(4, "rereg without IB_MR_REREG_TRANS not supported yet,"
+ " mr_rereg_mask=%x", mr_rereg_mask);
+ retcode = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+
+ EHCA_CHECK_MR(mr);
+ e_mr = container_of(mr, struct ehca_mr, ib.ib_mr);
+ if (mr_rereg_mask & IB_MR_REREG_PD) {
+ EHCA_CHECK_PD(pd);
+ }
+
+ if ((mr_rereg_mask &
+ ~(IB_MR_REREG_TRANS | IB_MR_REREG_PD | IB_MR_REREG_ACCESS)) ||
+ (mr_rereg_mask == 0)) {
+ retcode = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+
+ shca = container_of(mr->device, struct ehca_shca, ib_device);
+
+ /* check other parameters */
+ if (e_mr == shca->maxmr) {
+ /* should be impossible, however reject to be sure */
+ EDEB_ERR(3, "rereg internal max-MR impossible, mr=%p "
+ "shca->maxmr=%p mr->lkey=%x",
+ mr, shca->maxmr, mr->lkey);
+ retcode = -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) {
+ EDEB_ERR(4, "not supported for FMR, mr=%p flags=%x",
+ mr, e_mr->flags);
+ retcode = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+ if (ehca_adr_bad(phys_buf_array) || num_phys_buf <= 0) {
+ EDEB_ERR(4, "bad input values: mr_rereg_mask=%x "
+ "phys_buf_array=%p num_phys_buf=%x",
+ mr_rereg_mask, phys_buf_array, num_phys_buf);
+ retcode = -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 */
+ EDEB_ERR(4, "bad input values: mr_rereg_mask=%x "
+ "mr_access_flags=%x", mr_rereg_mask, mr_access_flags);
+ retcode = -EINVAL;
+ goto rereg_phys_mr_exit0;
+ }
+
+ /* set requested values dependent on rereg request */
+ spin_lock_irqsave(&e_mr->mrlock, sl_flags); /* get lock @TODO for MR*/
+ new_start = e_mr->start; /* new == old address */
+ new_size = e_mr->size; /* new == old length */
+ new_acl = e_mr->acl; /* new == old access control */
+ new_pd = container_of(mr->pd,struct ehca_pd,ib_pd); /*new == old PD*/
+
+ if (mr_rereg_mask & IB_MR_REREG_TRANS) {
+ new_start = iova_start; /* change address */
+ /* check physical buffer list and calculate size */
+ retcode = ehca_mr_chk_buf_and_calc_size(phys_buf_array,
+ num_phys_buf,
+ iova_start, &new_size);
+ if (retcode != 0)
+ goto rereg_phys_mr_exit1;
+ if ((new_size == 0) ||
+ ((0xFFFFFFFFFFFFFFFF - new_size) < (u64)iova_start)) {
+ EDEB_ERR(4, "bad input values: new_size=%lx "
+ "iova_start=%p", new_size, iova_start);
+ retcode = -EINVAL;
+ goto rereg_phys_mr_exit1;
+ }
+ num_pages_mr = ((((u64)new_start % PAGE_SIZE) +
+ new_size + PAGE_SIZE - 1) / PAGE_SIZE);
+ pginfo.type = EHCA_MR_PGI_PHYS;
+ pginfo.num_pages = num_pages_mr;
+ pginfo.num_phys_buf = num_phys_buf;
+ pginfo.phys_buf_array = phys_buf_array;
+ }
+ 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);
+
+ EDEB(7, "mr=%p new_start=%p new_size=%lx new_acl=%x new_pd=%p "
+ "num_pages_mr=%lx",
+ e_mr, new_start, new_size, new_acl, new_pd, num_pages_mr);
+
+ retcode = ehca_rereg_mr(shca, e_mr, new_start, new_size, new_acl,
+ new_pd, &pginfo, &tmp_lkey, &tmp_rkey);
+ if (retcode != 0)
+ 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); /* free spin lock */
+ rereg_phys_mr_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "mr=%p mr_rereg_mask=%x pd=%p phys_buf_array=%p "
+ "num_phys_buf=%x mr_access_flags=%x iova_start=%p",
+ mr, mr_rereg_mask, pd, phys_buf_array, num_phys_buf,
+ mr_access_flags, iova_start);
+ else
+ EDEB_EX(4, "retcode=%x mr=%p mr_rereg_mask=%x pd=%p "
+ "phys_buf_array=%p num_phys_buf=%x mr_access_flags=%x "
+ "iova_start=%p",
+ retcode, mr, mr_rereg_mask, pd, phys_buf_array,
+ num_phys_buf, mr_access_flags, iova_start);
+
+ return (retcode);
+} /* end ehca_rereg_phys_mr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+int ehca_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
+{
+ int retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_shca *shca = 0;
+ struct ehca_mr *e_mr = 0;
+ struct ipz_pd fwpd; /* Firmware PD */
+ u32 access_ctrl = 0;
+ u64 tmp_remote_size = 0;
+ u64 tmp_remote_len = 0;
+
+ unsigned long sl_flags;
+
+ EDEB_EN(7, "mr=%p mr_attr=%p", mr, mr_attr);
+
+ EHCA_CHECK_MR(mr);
+ e_mr = container_of(mr, struct ehca_mr, ib.ib_mr);
+ if (ehca_adr_bad(mr_attr)) {
+ EDEB_ERR(4, "bad input values: mr_attr=%p", mr_attr);
+ retcode = -EINVAL;
+ goto query_mr_exit0;
+ }
+ if ((e_mr->flags & EHCA_MR_FLAG_FMR)) {
+ EDEB_ERR(4, "not supported for FMR, mr=%p e_mr=%p "
+ "e_mr->flags=%x", mr, e_mr, e_mr->flags);
+ retcode = -EINVAL;
+ goto query_mr_exit0;
+ }
+
+ shca = container_of(mr->device, struct ehca_shca, ib_device);
+ memset(mr_attr, 0, sizeof(struct ib_mr_attr));
+ spin_lock_irqsave(&e_mr->mrlock, sl_flags); /* get spin lock @TODO?? */
+
+ rc = hipz_h_query_mr(shca->ipz_hca_handle, &e_mr->pf,
+ &e_mr->ipz_mr_handle, &mr_attr->size,
+ &mr_attr->device_virt_addr, &tmp_remote_size,
+ &tmp_remote_len, &access_ctrl, &fwpd,
+ &mr_attr->lkey, &mr_attr->rkey);
+ if (rc != H_Success) {
+ EDEB_ERR(4, "hipz_mr_query failed, rc=%lx mr=%p "
+ "hca_hndl=%lx mr_hndl=%lx lkey=%x",
+ rc, mr, shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle, mr->lkey);
+ retcode = ehca_mrmw_map_rc_query_mr(rc);
+ goto query_mr_exit1;
+ }
+ ehca_mrmw_reverse_map_acl(&access_ctrl, &mr_attr->mr_access_flags);
+ mr_attr->pd = mr->pd;
+
+ query_mr_exit1:
+ spin_unlock_irqrestore(&e_mr->mrlock, sl_flags); /* free spin lock */
+ query_mr_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "pd=%p device_virt_addr=%lx size=%lx "
+ "mr_access_flags=%x lkey=%x rkey=%x",
+ mr_attr->pd, mr_attr->device_virt_addr,
+ mr_attr->size, mr_attr->mr_access_flags,
+ mr_attr->lkey, mr_attr->rkey);
+ else
+ EDEB_EX(4, "retcode=%x mr=%p mr_attr=%p", retcode, mr, mr_attr);
+ return (retcode);
+} /* end ehca_query_mr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+int ehca_dereg_mr(struct ib_mr *mr)
+{
+ int retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_shca *shca = 0;
+ struct ehca_mr *e_mr = 0;
+
+ EDEB_EN(7, "mr=%p", mr);
+
+ EHCA_CHECK_MR(mr);
+ e_mr = container_of(mr, struct ehca_mr, ib.ib_mr);
+ shca = container_of(mr->device, struct ehca_shca, ib_device);
+
+ if ((e_mr->flags & EHCA_MR_FLAG_FMR)) {
+ EDEB_ERR(4, "not supported for FMR, mr=%p e_mr=%p "
+ "e_mr->flags=%x", mr, e_mr, e_mr->flags);
+ retcode = -EINVAL;
+ goto dereg_mr_exit0;
+ } else if (e_mr == shca->maxmr) {
+ /* should be impossible, however reject to be sure */
+ EDEB_ERR(3, "dereg internal max-MR impossible, mr=%p "
+ "shca->maxmr=%p mr->lkey=%x",
+ mr, shca->maxmr, mr->lkey);
+ retcode = -EINVAL;
+ goto dereg_mr_exit0;
+ }
+
+ /*@TODO: BUSY: MR still has bound window(s) */
+ rc = hipz_h_free_resource_mr(shca->ipz_hca_handle, &e_mr->pf,
+ &e_mr->ipz_mr_handle);
+ if (rc != H_Success) {
+ EDEB_ERR(4, "hipz_free_mr failed, rc=%lx shca=%p e_mr=%p"
+ " hca_hndl=%lx mr_hndl=%lx mr->lkey=%x",
+ rc, shca, e_mr, shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle, mr->lkey);
+ retcode = ehca_mrmw_map_rc_free_mr(rc);
+ goto dereg_mr_exit0;
+ }
+
+ /* successful deregistration */
+ ehca_mr_delete(e_mr);
+
+ dereg_mr_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "");
+ else
+ EDEB_EX(4, "retcode=%x mr=%p", retcode, mr);
+ return (retcode);
+} /* end ehca_dereg_mr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+struct ib_mw *ehca_alloc_mw(struct ib_pd *pd)
+{
+ struct ib_mw *ib_mw = 0;
+ u64 rc = H_Success;
+ struct ehca_shca *shca = 0;
+ struct ehca_mw *e_mw = 0;
+ struct ehca_pd *e_pd = 0;
+
+ EDEB_EN(7, "pd=%p", pd);
+
+ EHCA_CHECK_PD_P(pd);
+ e_pd = container_of(pd, struct ehca_pd, ib_pd);
+ shca = container_of(pd->device, struct ehca_shca, ib_device);
+
+ e_mw = ehca_mw_new();
+ if (!e_mw) {
+ ib_mw = ERR_PTR(-ENOMEM);
+ goto alloc_mw_exit0;
+ }
+
+ rc = hipz_h_alloc_resource_mw(shca->ipz_hca_handle, &e_mw->pf,
+ &shca->pf, e_pd->fw_pd,
+ &e_mw->ipz_mw_handle, &e_mw->ib_mw.rkey);
+ if (rc != H_Success) {
+ EDEB_ERR(4, "hipz_mw_allocate failed, rc=%lx shca=%p "
+ "hca_hndl=%lx mw=%p", rc, shca,
+ shca->ipz_hca_handle.handle, e_mw);
+ ib_mw = ERR_PTR(ehca_mrmw_map_rc_alloc(rc));
+ goto alloc_mw_exit1;
+ }
+ /* save R_Key in local copy */
+ /*@TODO????? mw->rkey = *rkey_p; */
+
+ /* successful MW allocation */
+ ib_mw = &e_mw->ib_mw;
+ goto alloc_mw_exit0;
+
+ alloc_mw_exit1:
+ ehca_mw_delete(e_mw);
+ alloc_mw_exit0:
+ if (IS_ERR(ib_mw) == 0)
+ EDEB_EX(7, "ib_mw=%p rkey=%x", ib_mw, ib_mw->rkey);
+ else
+ EDEB_EX(4, "rc=%lx 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)
+{
+ int retcode = 0;
+
+ /*@TODO: not supported up to now */
+ EDEB_ERR(4, "bind MW currently not supported by HCAD");
+ retcode = -EPERM;
+ goto bind_mw_exit0;
+
+ bind_mw_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "qp=%p mw=%p mw_bind=%p", qp, mw, mw_bind);
+ else
+ EDEB_EX(4, "rc=%x qp=%p mw=%p mw_bind=%p",
+ retcode, qp, mw, mw_bind);
+ return (retcode);
+} /* end ehca_bind_mw() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+int ehca_dealloc_mw(struct ib_mw *mw)
+{
+ int retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_shca *shca = 0;
+ struct ehca_mw *e_mw = 0;
+
+ EDEB_EN(7, "mw=%p", mw);
+
+ EHCA_CHECK_MW(mw);
+ e_mw = container_of(mw, struct ehca_mw, ib_mw);
+ shca = container_of(mw->device, struct ehca_shca, ib_device);
+
+ rc = hipz_h_free_resource_mw(shca->ipz_hca_handle, &e_mw->pf,
+ &e_mw->ipz_mw_handle);
+ if (rc != H_Success) {
+ EDEB_ERR(4, "hipz_free_mw failed, rc=%lx shca=%p mw=%p "
+ "rkey=%x hca_hndl=%lx mw_hndl=%lx",
+ rc, shca, mw, mw->rkey, shca->ipz_hca_handle.handle,
+ e_mw->ipz_mw_handle.handle);
+ retcode = ehca_mrmw_map_rc_free_mw(rc);
+ goto dealloc_mw_exit0;
+ }
+ /* successful deallocation */
+ ehca_mw_delete(e_mw);
+
+ dealloc_mw_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "");
+ else
+ EDEB_EX(4, "retcode=%x mw=%p", retcode, mw);
+ return (retcode);
+} /* 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 = 0;
+ struct ehca_shca *shca = 0;
+ struct ehca_mr *e_fmr = 0;
+ int retcode = 0;
+ struct ehca_pd *e_pd = 0;
+ u32 tmp_lkey = 0;
+ u32 tmp_rkey = 0;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,0,0,0,0,0};
+
+ EDEB_EN(7, "pd=%p mr_access_flags=%x fmr_attr=%p",
+ pd, mr_access_flags, fmr_attr);
+
+ EHCA_CHECK_PD_P(pd);
+ if (ehca_adr_bad(fmr_attr)) {
+ EDEB_ERR(4, "bad input values: fmr_attr=%p", fmr_attr);
+ ib_fmr = ERR_PTR(-EINVAL);
+ goto alloc_fmr_exit0;
+ }
+
+ EDEB(7, "max_pages=%x max_maps=%x page_shift=%x",
+ fmr_attr->max_pages, fmr_attr->max_maps, fmr_attr->page_shift);
+
+ /* 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 */
+ EDEB_ERR(4, "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) {
+ EDEB_ERR(4, "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)) {
+ EDEB_ERR(4, "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;
+ }
+ if ((1 << fmr_attr->page_shift) != PAGE_SIZE) {
+ /* pagesize currently hardcoded to 4k ... */
+ EDEB_ERR(4, "unsupported fmr_attr->page_shift=%x",
+ fmr_attr->page_shift);
+ ib_fmr = ERR_PTR(-EINVAL);
+ goto alloc_fmr_exit0;
+ }
+
+ e_pd = container_of(pd, struct ehca_pd, ib_pd);
+ shca = container_of(pd->device, struct ehca_shca, ib_device);
+
+ e_fmr = ehca_mr_new();
+ if (e_fmr == 0) {
+ ib_fmr = ERR_PTR(-ENOMEM);
+ goto alloc_fmr_exit0;
+ }
+ e_fmr->flags |= EHCA_MR_FLAG_FMR;
+
+ /* register MR on HCA */
+ retcode = ehca_reg_mr(shca, e_fmr, 0,
+ fmr_attr->max_pages * PAGE_SIZE,
+ mr_access_flags, e_pd, &pginfo,
+ &tmp_lkey, &tmp_rkey);
+ if (retcode != 0) {
+ ib_fmr = ERR_PTR(retcode);
+ goto alloc_fmr_exit1;
+ }
+
+ /* successful registration of all pages */
+ e_fmr->fmr_page_size = 1 << fmr_attr->page_shift;
+ e_fmr->fmr_max_pages = fmr_attr->max_pages; /* pagesize hardcoded 4k */
+ e_fmr->fmr_max_maps = fmr_attr->max_maps;
+ e_fmr->fmr_map_cnt = 0;
+ ib_fmr = &e_fmr->ib.ib_fmr;
+ goto alloc_fmr_exit0;
+
+ alloc_fmr_exit1:
+ ehca_mr_delete(e_fmr);
+ alloc_fmr_exit0:
+ if (IS_ERR(ib_fmr) == 0)
+ EDEB_EX(7, "ib_fmr=%p tmp_lkey=%x tmp_rkey=%x",
+ ib_fmr, tmp_lkey, tmp_rkey);
+ else
+ EDEB_EX(4, "rc=%lx pd=%p mr_access_flags=%x "
+ "fmr_attr=%p", PTR_ERR(ib_fmr), pd,
+ mr_access_flags, fmr_attr);
+ 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 retcode = 0;
+ struct ehca_shca *shca = 0;
+ struct ehca_mr *e_fmr = 0;
+ struct ehca_pd *e_pd = 0;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,0,0,0,0,0};
+ u32 tmp_lkey = 0;
+ u32 tmp_rkey = 0;
+ /*@TODO unsigned long sl_flags; */
+
+ EDEB_EN(7, "fmr=%p page_list=%p list_len=%x iova=%lx",
+ fmr, page_list, list_len, iova);
+
+ EHCA_CHECK_FMR(fmr);
+ e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr);
+ shca = container_of(fmr->device, struct ehca_shca, ib_device);
+ e_pd = container_of(fmr->pd, struct ehca_pd, ib_pd);
+
+ if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) {
+ EDEB_ERR(4, "not a FMR, e_fmr=%p e_fmr->flags=%x",
+ e_fmr, e_fmr->flags);
+ retcode = -EINVAL;
+ goto map_phys_fmr_exit0;
+ }
+ retcode = ehca_fmr_check_page_list(e_fmr, page_list, list_len);
+ if (retcode != 0)
+ goto map_phys_fmr_exit0;
+ if (iova % PAGE_SIZE) {
+ /* only whole-numbered pages */
+ EDEB_ERR(4, "bad iova, iova=%lx", iova);
+ retcode = -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 */
+ EDEB(6, "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);
+ }
+
+ pginfo.type = EHCA_MR_PGI_FMR;
+ pginfo.num_pages = list_len;
+ pginfo.page_list = page_list;
+
+ /* @TODO spin_lock_irqsave(&e_fmr->mrlock, sl_flags); */
+
+ retcode = ehca_rereg_mr(shca, e_fmr, (u64 *)iova,
+ list_len * PAGE_SIZE,
+ e_fmr->acl, e_pd, &pginfo,
+ &tmp_lkey, &tmp_rkey);
+ if (retcode != 0) {
+ /* @TODO spin_unlock_irqrestore(&fmr->mrlock, sl_flags); */
+ goto map_phys_fmr_exit0;
+ }
+ /* successful reregistration */
+ e_fmr->fmr_map_cnt++;
+ /* @TODO spin_unlock_irqrestore(&fmr->mrlock, sl_flags); */
+
+ e_fmr->ib.ib_fmr.lkey = tmp_lkey;
+ e_fmr->ib.ib_fmr.rkey = tmp_rkey;
+
+ map_phys_fmr_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "lkey=%x rkey=%x",
+ e_fmr->ib.ib_fmr.lkey, e_fmr->ib.ib_fmr.rkey);
+ else
+ EDEB_EX(4, "retcode=%x fmr=%p page_list=%p list_len=%x "
+ "iova=%lx",
+ retcode, fmr, page_list, list_len, iova);
+ return (retcode);
+} /* end ehca_map_phys_fmr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+int ehca_unmap_fmr(struct list_head *fmr_list)
+{
+ int retcode = 0;
+ struct ib_fmr *ib_fmr;
+ struct ehca_shca *shca = 0;
+ struct ehca_shca *prev_shca = 0;
+ struct ehca_mr *e_fmr = 0;
+ u32 num_fmr = 0;
+ u32 unmap_fmr_cnt = 0;
+ /* @TODO unsigned long sl_flags; */
+
+ EDEB_EN(7, "fmr_list=%p", fmr_list);
+
+ /* 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);
+ EHCA_CHECK_FMR(ib_fmr);
+ e_fmr = container_of(ib_fmr, struct ehca_mr, ib.ib_fmr);
+ if ((shca != prev_shca) && (prev_shca != 0)) {
+ EDEB_ERR(4, "SHCA mismatch, shca=%p prev_shca=%p "
+ "e_fmr=%p", shca, prev_shca, e_fmr);
+ retcode = -EINVAL;
+ goto unmap_fmr_exit0;
+ }
+ if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) {
+ EDEB_ERR(4, "not a FMR, e_fmr=%p e_fmr->flags=%x",
+ e_fmr, e_fmr->flags);
+ retcode = -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);
+ /*@TODO??? spin_lock_irqsave(&fmr->mrlock, sl_flags); */
+ retcode = ehca_unmap_one_fmr(shca, e_fmr);
+ /*@TODO???? spin_unlock_irqrestore(&fmr->mrlock, sl_flags); */
+ if (retcode != 0) {
+ /* unmap failed, stop unmapping of rest of FMRs */
+ EDEB_ERR(4, "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 (retcode == 0)
+ EDEB_EX(7, "num_fmr=%x", num_fmr);
+ else
+ EDEB_EX(4, "retcode=%x fmr_list=%p num_fmr=%x unmap_fmr_cnt=%x",
+ retcode, fmr_list, num_fmr, unmap_fmr_cnt);
+ return (retcode);
+} /* end ehca_unmap_fmr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+int ehca_dealloc_fmr(struct ib_fmr *fmr)
+{
+ int retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_shca *shca = 0;
+ struct ehca_mr *e_fmr = 0;
+
+ EDEB_EN(7, "fmr=%p", fmr);
+
+ EHCA_CHECK_FMR(fmr);
+ e_fmr = container_of(fmr, struct ehca_mr, ib.ib_fmr);
+ shca = container_of(fmr->device, struct ehca_shca, ib_device);
+
+ if (!(e_fmr->flags & EHCA_MR_FLAG_FMR)) {
+ EDEB_ERR(4, "not a FMR, e_fmr=%p e_fmr->flags=%x",
+ e_fmr, e_fmr->flags);
+ retcode = -EINVAL;
+ goto free_fmr_exit0;
+ }
+
+ rc = hipz_h_free_resource_mr(shca->ipz_hca_handle, &e_fmr->pf,
+ &e_fmr->ipz_mr_handle);
+ if (rc != H_Success) {
+ EDEB_ERR(4, "hipz_free_mr failed, rc=%lx e_fmr=%p "
+ "hca_hndl=%lx fmr_hndl=%lx fmr->lkey=%x",
+ rc, e_fmr, shca->ipz_hca_handle.handle,
+ e_fmr->ipz_mr_handle.handle, fmr->lkey);
+ ehca_mrmw_map_rc_free_mr(rc);
+ goto free_fmr_exit0;
+ }
+ /* successful deregistration */
+ ehca_mr_delete(e_fmr);
+
+ free_fmr_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "");
+ else
+ EDEB_EX(4, "retcode=%x fmr=%p", retcode, fmr);
+ return (retcode);
+} /* end ehca_dealloc_fmr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+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,
+ u32 *rkey)
+{
+ int retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_pfmr *pfmr = &e_mr->pf;
+ u32 hipz_acl = 0;
+
+ EDEB_EN(7, "shca=%p e_mr=%p iova_start=%p size=%lx acl=%x e_pd=%p "
+ "pginfo=%p num_pages=%lx", shca, e_mr, iova_start, size, acl,
+ e_pd, pginfo, pginfo->num_pages);
+
+ ehca_mrmw_map_acl(acl, &hipz_acl);
+ ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl);
+ if (ehca_use_hp_mr == 1)
+ hipz_acl |= 0x00000001;
+
+ rc = hipz_h_alloc_resource_mr(shca->ipz_hca_handle, pfmr, &shca->pf,
+ (u64)iova_start, size, hipz_acl,
+ e_pd->fw_pd, &e_mr->ipz_mr_handle,
+ lkey, rkey);
+ if (rc != H_Success) {
+ EDEB_ERR(4, "hipz_alloc_mr failed, rc=%lx hca_hndl=%lx "
+ "mr_hndl=%lx", rc, shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle);
+ retcode = ehca_mrmw_map_rc_alloc(rc);
+ goto ehca_reg_mr_exit0;
+ }
+
+ retcode = ehca_reg_mr_rpages(shca, e_mr, pginfo);
+ if (retcode != 0)
+ goto ehca_reg_mr_exit1;
+
+ /* successful registration */
+ e_mr->num_pages = pginfo->num_pages;
+ e_mr->start = iova_start;
+ e_mr->size = size;
+ e_mr->acl = acl;
+ goto ehca_reg_mr_exit0;
+
+ ehca_reg_mr_exit1:
+ rc = hipz_h_free_resource_mr(shca->ipz_hca_handle, pfmr,
+ &e_mr->ipz_mr_handle);
+ if (rc != H_Success) {
+ EDEB(1, "rc=%lx shca=%p e_mr=%p iova_start=%p "
+ "size=%lx acl=%x e_pd=%p lkey=%x pginfo=%p num_pages=%lx",
+ rc, shca, e_mr, iova_start, size, acl,
+ e_pd, *lkey, pginfo, pginfo->num_pages);
+ ehca_catastrophic("internal error in ehca_reg_mr, "
+ "not recoverable");
+ }
+ ehca_reg_mr_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "retcode=%x lkey=%x rkey=%x", retcode, *lkey, *rkey);
+ else
+ EDEB_EX(4, "retcode=%x shca=%p e_mr=%p iova_start=%p "
+ "size=%lx acl=%x e_pd=%p pginfo=%p num_pages=%lx",
+ retcode, shca, e_mr, iova_start,
+ size, acl, e_pd, pginfo, pginfo->num_pages);
+ return (retcode);
+} /* end ehca_reg_mr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+int ehca_reg_mr_rpages(struct ehca_shca *shca,
+ struct ehca_mr *e_mr,
+ struct ehca_mr_pginfo *pginfo)
+{
+ int retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_pfmr *pfmr = &e_mr->pf;
+ u32 rnum = 0;
+ u64 rpage = 0;
+ u32 i;
+ u64 *kpage = 0;
+
+ EDEB_EN(7, "shca=%p e_mr=%p pginfo=%p num_pages=%lx",
+ shca, e_mr, pginfo, pginfo->num_pages);
+
+ kpage = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (kpage == 0) {
+ EDEB_ERR(4, "kpage alloc failed");
+ retcode = -ENOMEM;
+ goto ehca_reg_mr_rpages_exit0;
+ }
+ memset(kpage, 0, PAGE_SIZE);
+
+ /* max 512 pages per shot */
+ for (i = 0; i < ((pginfo->num_pages + 512 - 1) / 512); i++) {
+
+ if (i == ((pginfo->num_pages + 512 - 1) / 512) - 1) {
+ rnum = pginfo->num_pages % 512; /* last shot */
+ if (rnum == 0)
+ rnum = 512; /* last shot is full */
+ } else
+ rnum = 512;
+
+ if (rnum > 1) {
+ retcode = ehca_set_pagebuf(e_mr, pginfo, rnum, kpage);
+ if (retcode) {
+ EDEB_ERR(4, "ehca_set_pagebuf bad rc, "
+ "retcode=%x rnum=%x kpage=%p",
+ retcode, rnum, kpage);
+ retcode = -EFAULT;
+ goto ehca_reg_mr_rpages_exit1;
+ }
+ rpage = ehca_kv_to_g(kpage);
+ if (rpage == 0) {
+ EDEB_ERR(4, "kpage=%p i=%x", kpage, i);
+ retcode = -EFAULT;
+ goto ehca_reg_mr_rpages_exit1;
+ }
+ } else { /* rnum==1 */
+ retcode = ehca_set_pagebuf_1(e_mr, pginfo, &rpage);
+ if (retcode) {
+ EDEB_ERR(4, "ehca_set_pagebuf_1 bad rc, "
+ "retcode=%x i=%x", retcode, i);
+ retcode = -EFAULT;
+ goto ehca_reg_mr_rpages_exit1;
+ }
+ }
+
+ EDEB(9, "i=%x rnum=%x rpage=%lx", i, rnum, rpage);
+
+ rc = hipz_h_register_rpage_mr(shca->ipz_hca_handle,
+ &e_mr->ipz_mr_handle, pfmr,
+ &shca->pf,
+ 0, /* pagesize hardcoded to 4k */
+ 0, rpage, rnum);
+
+ if (i == ((pginfo->num_pages + 512 - 1) / 512) - 1) {
+ /* check for 'registration complete'==H_Success */
+ /* and for 'page registered'==H_PAGE_REGISTERED */
+ if (rc != H_Success) {
+ EDEB_ERR(4, "last hipz_reg_rpage_mr failed, "
+ "rc=%lx e_mr=%p i=%x hca_hndl=%lx "
+ "mr_hndl=%lx lkey=%x", rc, e_mr, i,
+ shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle,
+ e_mr->ib.ib_mr.lkey);
+ retcode = ehca_mrmw_map_rc_rrpg_last(rc);
+ break;
+ } else
+ retcode = 0;
+ } else if (rc != H_PAGE_REGISTERED) {
+ EDEB_ERR(4, "hipz_reg_rpage_mr failed, rc=%lx e_mr=%p "
+ "i=%x lkey=%x hca_hndl=%lx mr_hndl=%lx",
+ rc, e_mr, i, e_mr->ib.ib_mr.lkey,
+ shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle);
+ retcode = ehca_mrmw_map_rc_rrpg_notlast(rc);
+ break;
+ } else
+ retcode = 0;
+ } /* end for(i) */
+
+
+ ehca_reg_mr_rpages_exit1:
+ kfree(kpage);
+ ehca_reg_mr_rpages_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "retcode=%x", retcode);
+ else
+ EDEB_EX(4, "retcode=%x shca=%p e_mr=%p pginfo=%p "
+ "num_pages=%lx",
+ retcode, shca, e_mr, pginfo, pginfo->num_pages);
+ return (retcode);
+} /* 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,
+ u32 *rkey)
+{
+ int retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_pfmr *pfmr = &e_mr->pf;
+ u64 iova_start_out = 0;
+ u32 hipz_acl = 0;
+ u64 *kpage = 0;
+ u64 rpage = 0;
+ struct ehca_mr_pginfo pginfo_save;
+
+ EDEB_EN(7, "shca=%p e_mr=%p iova_start=%p size=%lx acl=%x "
+ "e_pd=%p pginfo=%p num_pages=%lx", shca, e_mr,
+ iova_start, size, acl, e_pd, pginfo, pginfo->num_pages);
+
+ ehca_mrmw_map_acl(acl, &hipz_acl);
+ ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl);
+
+ kpage = kmalloc(PAGE_SIZE, GFP_KERNEL);
+ if (kpage == 0) {
+ EDEB_ERR(4, "kpage alloc failed");
+ retcode = -ENOMEM;
+ goto ehca_rereg_mr_rereg1_exit0;
+ }
+ memset(kpage, 0, PAGE_SIZE);
+
+ pginfo_save = *pginfo;
+ retcode = ehca_set_pagebuf(e_mr, pginfo, pginfo->num_pages, kpage);
+ if (retcode != 0) {
+ EDEB_ERR(4, "set pagebuf failed, e_mr=%p pginfo=%p type=%x "
+ "num_pages=%lx kpage=%p",
+ e_mr, pginfo, pginfo->type, pginfo->num_pages, kpage);
+ goto ehca_rereg_mr_rereg1_exit1;
+ }
+ rpage = ehca_kv_to_g(kpage);
+ if (rpage == 0) {
+ EDEB_ERR(4, "kpage=%p", kpage);
+ retcode = -EFAULT;
+ goto ehca_rereg_mr_rereg1_exit1;
+ }
+ rc = hipz_h_reregister_pmr(shca->ipz_hca_handle, pfmr, &shca->pf,
+ &e_mr->ipz_mr_handle, (u64)iova_start,
+ size, hipz_acl, e_pd->fw_pd, rpage,
+ &iova_start_out, lkey, rkey);
+ if (rc != 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) */
+ EDEB(6, "hipz_h_reregister_pmr failed (Rereg1), rc=%lx "
+ "e_mr=%p", rc, e_mr);
+ *pginfo = pginfo_save;
+ retcode = -EAGAIN;
+ } else if ((u64 *)iova_start_out != iova_start) {
+ EDEB_ERR(4, "PHYP changed iova_start in rereg_pmr, "
+ "iova_start=%p iova_start_out=%lx e_mr=%p "
+ "mr_handle=%lx lkey=%x", iova_start, iova_start_out,
+ e_mr, e_mr->ipz_mr_handle.handle, e_mr->ib.ib_mr.lkey);
+ retcode = -EFAULT;
+ } else {
+ /* successful reregistration */
+ /* note: start and start_out are identical for eServer HCAs */
+ e_mr->num_pages = pginfo->num_pages;
+ e_mr->start = iova_start;
+ e_mr->size = size;
+ e_mr->acl = acl;
+ }
+
+ ehca_rereg_mr_rereg1_exit1:
+ kfree(kpage);
+ ehca_rereg_mr_rereg1_exit0:
+ if ((retcode == 0) || (retcode == -EAGAIN))
+ EDEB_EX(7, "retcode=%x rc=%lx lkey=%x rkey=%x pginfo=%p "
+ "num_pages=%lx",
+ retcode, rc, *lkey, *rkey, pginfo, pginfo->num_pages);
+ else
+ EDEB_EX(4, "retcode=%x rc=%lx lkey=%x rkey=%x pginfo=%p "
+ "num_pages=%lx",
+ retcode, rc, *lkey, *rkey, pginfo, pginfo->num_pages);
+ return (retcode);
+} /* 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 retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_pfmr *pfmr = &e_mr->pf;
+ int Rereg1Hcall = TRUE; /* TRUE: use hipz_h_reregister_pmr directly */
+ int Rereg3Hcall = FALSE; /* TRUE: use 3 hipz calls for reregistration */
+ struct ehca_bridge_handle save_bridge;
+
+ EDEB_EN(7, "shca=%p e_mr=%p iova_start=%p size=%lx acl=%x "
+ "e_pd=%p pginfo=%p num_pages=%lx", shca, e_mr,
+ iova_start, size, acl, e_pd, pginfo, pginfo->num_pages);
+
+ /* first determine reregistration hCall(s) */
+ if ((pginfo->num_pages > 512) || (e_mr->num_pages > 512) ||
+ (pginfo->num_pages > e_mr->num_pages)) {
+ EDEB(7, "Rereg3 case, pginfo->num_pages=%lx "
+ "e_mr->num_pages=%x", pginfo->num_pages, e_mr->num_pages);
+ Rereg1Hcall = FALSE;
+ Rereg3Hcall = TRUE;
+ }
+
+ if (e_mr->flags & EHCA_MR_FLAG_MAXMR) { /* check for max-MR */
+ Rereg1Hcall = FALSE;
+ Rereg3Hcall = TRUE;
+ e_mr->flags &= ~EHCA_MR_FLAG_MAXMR;
+ EDEB(4, "Rereg MR for max-MR! e_mr=%p", e_mr);
+ }
+
+ if (Rereg1Hcall) {
+ retcode = ehca_rereg_mr_rereg1(shca, e_mr, iova_start, size,
+ acl, e_pd, pginfo, lkey, rkey);
+ if (retcode != 0) {
+ if (retcode == -EAGAIN)
+ Rereg3Hcall = TRUE;
+ else
+ goto ehca_rereg_mr_exit0;
+ }
+ }
+
+ if (Rereg3Hcall) {
+ struct ehca_mr save_mr;
+
+ /* first deregister old MR */
+ rc = hipz_h_free_resource_mr(shca->ipz_hca_handle, pfmr,
+ &e_mr->ipz_mr_handle);
+ if (rc != H_Success) {
+ EDEB_ERR(4, "hipz_free_mr failed, rc=%lx e_mr=%p "
+ "hca_hndl=%lx mr_hndl=%lx mr->lkey=%x",
+ rc, e_mr, shca->ipz_hca_handle.handle,
+ e_mr->ipz_mr_handle.handle,
+ e_mr->ib.ib_mr.lkey);
+ retcode = ehca_mrmw_map_rc_free_mr(rc);
+ goto ehca_rereg_mr_exit0;
+ }
+ /* clean ehca_mr_t, without changing struct ib_mr and lock */
+ save_bridge = pfmr->bridge;
+ save_mr = *e_mr;
+ ehca_mr_deletenew(e_mr);
+
+ /* set some MR values */
+ e_mr->flags = save_mr.flags;
+ pfmr->bridge = save_bridge;
+ 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;
+
+ retcode = ehca_reg_mr(shca, e_mr, iova_start, size, acl,
+ e_pd, pginfo, lkey, rkey);
+ if (retcode != 0) {
+ 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 (retcode == 0)
+ EDEB_EX(7, "retcode=%x shca=%p e_mr=%p iova_start=%p size=%lx "
+ "acl=%x e_pd=%p pginfo=%p num_pages=%lx lkey=%x "
+ "rkey=%x Rereg1Hcall=%x Rereg3Hcall=%x",
+ retcode, shca, e_mr, iova_start, size, acl, e_pd,
+ pginfo, pginfo->num_pages, *lkey, *rkey, Rereg1Hcall,
+ Rereg3Hcall);
+ else
+ EDEB_EX(4, "retcode=%x shca=%p e_mr=%p iova_start=%p size=%lx "
+ "acl=%x e_pd=%p pginfo=%p num_pages=%lx lkey=%x "
+ "rkey=%x Rereg1Hcall=%x Rereg3Hcall=%x",
+ retcode, shca, e_mr, iova_start, size, acl, e_pd,
+ pginfo, pginfo->num_pages, *lkey, *rkey, Rereg1Hcall,
+ Rereg3Hcall);
+
+ return (retcode);
+} /* end ehca_rereg_mr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+int ehca_unmap_one_fmr(struct ehca_shca *shca,
+ struct ehca_mr *e_fmr)
+{
+ int retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_pfmr *pfmr = &e_fmr->pf;
+ int Rereg1Hcall = TRUE; /* TRUE: use hipz_mr_reregister directly */
+ int Rereg3Hcall = FALSE; /* TRUE: use 3 hipz calls for unmapping */
+ struct ehca_bridge_handle save_bridge;
+ struct ehca_pd *e_pd = 0;
+ struct ehca_mr save_fmr;
+ u32 tmp_lkey = 0;
+ u32 tmp_rkey = 0;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,0,0,0,0,0};
+
+ EDEB_EN(7, "shca=%p e_fmr=%p", shca, e_fmr);
+
+ /* first check if reregistration hCall can be used for unmap */
+ if (e_fmr->fmr_max_pages > 512) {
+ Rereg1Hcall = FALSE;
+ Rereg3Hcall = TRUE;
+ }
+
+ e_pd = container_of(e_fmr->ib.ib_fmr.pd, struct ehca_pd, ib_pd);
+
+ if (Rereg1Hcall) {
+ /* note: after using rereg hcall with len=0, */
+ /* rereg hcall must be used again for registering pages */
+ u64 start_out = 0;
+ rc = hipz_h_reregister_pmr(shca->ipz_hca_handle, pfmr,
+ &shca->pf, &e_fmr->ipz_mr_handle, 0,
+ 0, 0, e_pd->fw_pd, 0, &start_out,
+ &tmp_lkey, &tmp_rkey);
+ if (rc != H_Success) {
+ /* should not happen, because length checked above, */
+ /* FMRs are not shared and no MW bound to FMRs */
+ EDEB_ERR(4, "hipz_reregister_pmr failed (Rereg1), "
+ "rc=%lx e_fmr=%p hca_hndl=%lx mr_hndl=%lx "
+ "lkey=%x", rc, e_fmr,
+ shca->ipz_hca_handle.handle,
+ e_fmr->ipz_mr_handle.handle,
+ e_fmr->ib.ib_fmr.lkey);
+ Rereg3Hcall = TRUE;
+ } else {
+ /* successful reregistration */
+ e_fmr->start = 0;
+ e_fmr->size = 0;
+ }
+ }
+
+ if (Rereg3Hcall) {
+ struct ehca_mr save_mr;
+
+ /* first free old FMR */
+ rc = hipz_h_free_resource_mr(shca->ipz_hca_handle, pfmr,
+ &e_fmr->ipz_mr_handle);
+ if (rc != H_Success) {
+ EDEB_ERR(4, "hipz_free_mr failed, rc=%lx e_fmr=%p "
+ "hca_hndl=%lx mr_hndl=%lx lkey=%x", rc, e_fmr,
+ shca->ipz_hca_handle.handle,
+ e_fmr->ipz_mr_handle.handle,
+ e_fmr->ib.ib_fmr.lkey);
+ retcode = ehca_mrmw_map_rc_free_mr(rc);
+ goto ehca_unmap_one_fmr_exit0;
+ }
+ /* clean ehca_mr_t, without changing lock */
+ save_bridge = pfmr->bridge;
+ save_fmr = *e_fmr;
+ ehca_mr_deletenew(e_fmr);
+
+ /* set some MR values */
+ e_fmr->flags = save_fmr.flags;
+ pfmr->bridge = save_bridge;
+ 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;
+
+ pginfo.type = EHCA_MR_PGI_FMR;
+ pginfo.num_pages = 0;
+ retcode = ehca_reg_mr(shca, e_fmr, 0,
+ (e_fmr->fmr_max_pages *
+ e_fmr->fmr_page_size),
+ e_fmr->acl, e_pd, &pginfo, &tmp_lkey,
+ &tmp_rkey);
+ if (retcode != 0) {
+ u32 offset = (u64)(&e_fmr->flags) - (u64)e_fmr;
+ memcpy(&e_fmr->flags, &(save_mr.flags),
+ sizeof(struct ehca_mr) - offset);
+ goto ehca_unmap_one_fmr_exit0;
+ }
+ }
+
+ ehca_unmap_one_fmr_exit0:
+ EDEB_EX(7, "retcode=%x tmp_lkey=%x tmp_rkey=%x fmr_max_pages=%x "
+ "Rereg1Hcall=%x Rereg3Hcall=%x", retcode, tmp_lkey, tmp_rkey,
+ e_fmr->fmr_max_pages, Rereg1Hcall, Rereg3Hcall);
+ return (retcode);
+} /* 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,
+ u32 *rkey)
+{
+ int retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_pfmr *pfmr = &e_newmr->pf;
+ u32 hipz_acl = 0;
+
+ EDEB_EN(7,"shca=%p e_origmr=%p e_newmr=%p iova_start=%p acl=%x e_pd=%p",
+ shca, e_origmr, e_newmr, iova_start, acl, e_pd);
+
+ ehca_mrmw_map_acl(acl, &hipz_acl);
+ ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl);
+
+ rc = hipz_h_register_smr(shca->ipz_hca_handle, pfmr, &e_origmr->pf,
+ &shca->pf, &e_origmr->ipz_mr_handle,
+ (u64)iova_start, hipz_acl, e_pd->fw_pd,
+ &e_newmr->ipz_mr_handle, lkey, rkey);
+ if (rc != H_Success) {
+ EDEB_ERR(4, "hipz_reg_smr failed, rc=%lx shca=%p e_origmr=%p "
+ "e_newmr=%p iova_start=%p acl=%x e_pd=%p hca_hndl=%lx "
+ "mr_hndl=%lx lkey=%x", rc, 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);
+ retcode = ehca_mrmw_map_rc_reg_smr(rc);
+ goto ehca_reg_smr_exit0;
+ }
+ /* successful registration */
+ e_newmr->num_pages = e_origmr->num_pages;
+ e_newmr->start = iova_start;
+ e_newmr->size = e_origmr->size;
+ e_newmr->acl = acl;
+ goto ehca_reg_smr_exit0;
+
+ ehca_reg_smr_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "retcode=%x lkey=%x rkey=%x",
+ retcode, *lkey, *rkey);
+ else
+ EDEB_EX(4, "retcode=%x shca=%p e_origmr=%p e_newmr=%p "
+ "iova_start=%p acl=%x e_pd=%p", retcode,
+ shca, e_origmr, e_newmr, iova_start, acl, e_pd);
+ return (retcode);
+} /* end ehca_reg_smr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+int ehca_reg_internal_maxmr(
+ struct ehca_shca *shca,
+ struct ehca_pd *e_pd,
+ struct ehca_mr **e_maxmr)
+{
+ int retcode = 0;
+ struct ehca_mr *e_mr = 0;
+ u64 *iova_start = 0;
+ u64 size_maxmr = 0;
+ struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,0,0,0,0,0};
+ struct ib_phys_buf ib_pbuf;
+ u32 num_pages_mr = 0;
+
+ EDEB_EN(7, "shca=%p e_pd=%p e_maxmr=%p", shca, e_pd, e_maxmr);
+
+ if (ehca_adr_bad(shca) || ehca_adr_bad(e_pd) || ehca_adr_bad(e_maxmr)) {
+ EDEB_ERR(4, "bad input values: shca=%p e_pd=%p e_maxmr=%p",
+ shca, e_pd, e_maxmr);
+ retcode = -EINVAL;
+ goto ehca_reg_internal_maxmr_exit0;
+ }
+
+ e_mr = ehca_mr_new();
+ if (!e_mr) {
+ EDEB_ERR(4, "out of memory");
+ retcode = -ENOMEM;
+ goto ehca_reg_internal_maxmr_exit0;
+ }
+ e_mr->flags |= EHCA_MR_FLAG_MAXMR;
+
+ /* register internal max-MR on HCA */
+ size_maxmr = (u64)high_memory - PAGE_OFFSET;
+ EDEB(9, "high_memory=%p PAGE_OFFSET=%lx", high_memory, PAGE_OFFSET);
+ iova_start = (u64 *)KERNELBASE;
+ ib_pbuf.addr = 0;
+ ib_pbuf.size = size_maxmr;
+ num_pages_mr =
+ ((((u64)iova_start % PAGE_SIZE) + size_maxmr +
+ PAGE_SIZE - 1) / PAGE_SIZE);
+
+ pginfo.type = EHCA_MR_PGI_PHYS;
+ pginfo.num_pages = num_pages_mr;
+ pginfo.num_phys_buf = 1;
+ pginfo.phys_buf_array = &ib_pbuf;
+
+ retcode = 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);
+ if (retcode != 0) {
+ EDEB_ERR(4, "reg of internal max MR failed, e_mr=%p "
+ "iova_start=%p size_maxmr=%lx num_pages_mr=%x",
+ e_mr, iova_start, size_maxmr, num_pages_mr);
+ 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;
+ goto ehca_reg_internal_maxmr_exit0;
+
+ ehca_reg_internal_maxmr_exit1:
+ ehca_mr_delete(e_mr);
+ ehca_reg_internal_maxmr_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "*e_maxmr=%p lkey=%x rkey=%x",
+ *e_maxmr, (*e_maxmr)->ib.ib_mr.lkey,
+ (*e_maxmr)->ib.ib_mr.rkey);
+ else
+ EDEB_EX(4, "retcode=%x shca=%p e_pd=%p e_maxmr=%p",
+ retcode, shca, e_pd, e_maxmr);
+ return (retcode);
+} /* 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)
+{
+ int retcode = 0;
+ u64 rc = H_Success;
+ struct ehca_pfmr *pfmr = &e_newmr->pf;
+ struct ehca_mr *e_origmr = shca->maxmr;
+ u32 hipz_acl = 0;
+
+ EDEB_EN(7,"shca=%p e_origmr=%p e_newmr=%p iova_start=%p acl=%x e_pd=%p",
+ shca, e_origmr, e_newmr, iova_start, acl, e_pd);
+
+ ehca_mrmw_map_acl(acl, &hipz_acl);
+ ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl);
+
+ rc = hipz_h_register_smr(shca->ipz_hca_handle, pfmr, &e_origmr->pf,
+ &shca->pf, &e_origmr->ipz_mr_handle,
+ (u64)iova_start, hipz_acl, e_pd->fw_pd,
+ &e_newmr->ipz_mr_handle, lkey, rkey);
+ if (rc != H_Success) {
+ EDEB_ERR(4, "hipz_reg_smr failed, rc=%lx e_origmr=%p "
+ "hca_hndl=%lx mr_hndl=%lx lkey=%x",
+ rc, e_origmr, shca->ipz_hca_handle.handle,
+ e_origmr->ipz_mr_handle.handle,
+ e_origmr->ib.ib_mr.lkey);
+ retcode = ehca_mrmw_map_rc_reg_smr(rc);
+ goto ehca_reg_maxmr_exit0;
+ }
+ /* successful registration */
+ e_newmr->num_pages = e_origmr->num_pages;
+ e_newmr->start = iova_start;
+ e_newmr->size = e_origmr->size;
+ e_newmr->acl = acl;
+
+ ehca_reg_maxmr_exit0:
+ EDEB_EX(7, "retcode=%x lkey=%x rkey=%x", retcode, *lkey, *rkey);
+ return (retcode);
+} /* end ehca_reg_maxmr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+int ehca_dereg_internal_maxmr(struct ehca_shca *shca)
+{
+ int retcode = 0;
+ struct ehca_mr *e_maxmr = 0;
+ struct ib_pd *ib_pd = 0;
+
+ EDEB_EN(7, "shca=%p shca->maxmr=%p", shca, shca->maxmr);
+
+ if (shca->maxmr == 0) {
+ EDEB_ERR(4, "bad call, shca=%p", shca);
+ retcode = -EINVAL;
+ goto ehca_dereg_internal_maxmr_exit0;
+ }
+
+ e_maxmr = shca->maxmr;
+ ib_pd = e_maxmr->ib.ib_mr.pd;
+ shca->maxmr = 0; /* remove internal max-MR indication from SHCA */
+
+ retcode = ehca_dereg_mr(&e_maxmr->ib.ib_mr);
+ if (retcode != 0) {
+ EDEB_ERR(3, "dereg internal max-MR failed, "
+ "retcode=%x e_maxmr=%p shca=%p lkey=%x",
+ retcode, 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 (retcode == 0)
+ EDEB_EX(7, "");
+ else
+ EDEB_EX(4, "retcode=%x shca=%p shca->maxmr=%p",
+ retcode, shca, shca->maxmr);
+ return (retcode);
+} /* end ehca_dereg_internal_maxmr() */
diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.h b/drivers/infiniband/hw/ehca/ehca_mrmw.h
new file mode 100644
index 0000000..4df4b5b
--- /dev/null
+++ b/drivers/infiniband/hw/ehca/ehca_mrmw.h
@@ -0,0 +1,739 @@
+/*
+ * IBM eServer eHCA Infiniband device driver for Linux on POWER
+ *
+ * MR/MW declarations and inline functions
+ *
+ * Authors: Dietmar Decker <ddecker@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.
+ *
+ * $Id: ehca_mrmw.h,v 1.59 2006/02/06 10:17:34 schickhj Exp $
+ */
+
+#ifndef _EHCA_MRMW_H_
+#define _EHCA_MRMW_H_
+
+#undef DEB_PREFIX
+#define DEB_PREFIX "mrmw"
+
+#include "hipz_structs.h"
+
+
+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*/
+
+int ehca_reg_mr_rpages(struct ehca_shca *shca,
+ struct ehca_mr *e_mr,
+ struct ehca_mr_pginfo *pginfo);
+
+int ehca_rereg_mr(struct ehca_shca *shca,
+ struct ehca_mr *e_mr,
+ u64 *iova_start,
+ u64 size,
+ int mr_access_flags,
+ struct ehca_pd *e_pd,
+ struct ehca_mr_pginfo *pginfo,
+ u32 *lkey, /**<OUT*/
+ u32 *rkey); /**<OUT*/
+
+int ehca_unmap_one_fmr(struct ehca_shca *shca,
+ struct ehca_mr *e_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*/
+
+/** @brief register internal max-MR to internal SHCA
+ */
+int ehca_reg_internal_maxmr(struct ehca_shca *shca, /**<IN*/
+ struct ehca_pd *e_pd, /**<IN*/
+ struct ehca_mr **maxmr); /**<OUT*/
+
+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);
+
+int ehca_dereg_internal_maxmr(struct ehca_shca *shca);
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief check physical buffer array of MR verbs for validness and
+ calculates MR size
+*/
+static inline int ehca_mr_chk_buf_and_calc_size(
+ struct ib_phys_buf *phys_buf_array, /**<IN*/
+ int num_phys_buf, /**<IN*/
+ u64 *iova_start, /**<IN*/
+ u64 *size) /**<OUT*/
+{
+ struct ib_phys_buf *pbuf = phys_buf_array;
+ u64 size_count = 0;
+ u32 i;
+
+ if (num_phys_buf == 0) {
+ EDEB_ERR(4, "bad phys buf array len, num_phys_buf=0");
+ return (-EINVAL);
+ }
+ /* check first buffer */
+ if (((u64)iova_start & ~PAGE_MASK) != (pbuf->addr & ~PAGE_MASK)) {
+ EDEB_ERR(4, "iova_start/addr mismatch, iova_start=%p "
+ "pbuf->addr=%lx pbuf->size=%lx",
+ iova_start, pbuf->addr, pbuf->size);
+ return (-EINVAL);
+ }
+ if (((pbuf->addr + pbuf->size) % PAGE_SIZE) &&
+ (num_phys_buf > 1)) {
+ EDEB_ERR(4, "addr/size mismatch in 1st buf, pbuf->addr=%lx "
+ "pbuf->size=%lx", pbuf->addr, pbuf->size);
+ return (-EINVAL);
+ }
+
+ for (i = 0; i < num_phys_buf; i++) {
+ if ((i > 0) && (pbuf->addr % PAGE_SIZE)) {
+ EDEB_ERR(4, "bad address, i=%x pbuf->addr=%lx "
+ "pbuf->size=%lx", 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)) {
+ EDEB_ERR(4, "bad size, i=%x pbuf->size=%lx",
+ i, pbuf->size);
+ return (-EINVAL);
+ }
+ size_count += pbuf->size;
+ pbuf++;
+ }
+
+ *size = size_count;
+ return (0);
+} /* end ehca_mr_chk_buf_and_calc_size() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief check page list of map FMR verb for validness
+*/
+static inline int ehca_fmr_check_page_list(
+ struct ehca_mr *e_fmr, /**<IN*/
+ u64 *page_list, /**<IN*/
+ int list_len) /**<IN*/
+{
+ u32 i;
+ u64 *page = 0;
+
+ if (ehca_adr_bad(page_list)) {
+ EDEB_ERR(4, "bad page_list, page_list=%p fmr=%p",
+ page_list, e_fmr);
+ return (-EINVAL);
+ }
+
+ if ((list_len == 0) || (list_len > e_fmr->fmr_max_pages)) {
+ EDEB_ERR(4, "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 % PAGE_SIZE) {
+ EDEB_ERR(4, "bad page, i=%x *page=%lx page=%p "
+ "fmr=%p", i, *page, page, e_fmr);
+ return (-EINVAL);
+ }
+ page++;
+ }
+
+ return (0);
+} /* end ehca_fmr_check_page_list() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief setup page buffer from page info
+ */
+static inline int ehca_set_pagebuf(struct ehca_mr *e_mr,
+ struct ehca_mr_pginfo *pginfo,
+ u32 number,
+ u64 *kpage) /**<OUT*/
+{
+ int retcode = 0;
+ struct ib_umem_chunk *prev_chunk = NULL;
+ struct ib_umem_chunk *chunk = NULL;
+ struct ib_phys_buf *pbuf = NULL;
+ u64 *fmrlist = NULL;
+ u64 numpg = 0;
+ u64 pgaddr = 0;
+ u32 i = 0;
+ u32 j = 0;
+
+
+ EDEB_EN(7, "pginfo=%p type=%x num_pages=%lx next_buf=%lx next_page=%lx "
+ "number=%x kpage=%p page_count=%lx next_listelem=%lx "
+ "region=%p next_chunk=%p next_nmap=%lx",
+ pginfo, pginfo->type, pginfo->num_pages, pginfo->next_buf,
+ pginfo->next_page, number, kpage, pginfo->page_count,
+ pginfo->next_listelem, pginfo->region, pginfo->next_chunk,
+ pginfo->next_nmap);
+
+ if (pginfo->type == EHCA_MR_PGI_PHYS) {
+ /* loop over desired phys_buf_array entries */
+ while (i < number) {
+ pbuf = pginfo->phys_buf_array + pginfo->next_buf;
+ numpg = ((pbuf->size + PAGE_SIZE - 1) / PAGE_SIZE);
+ while (pginfo->next_page < numpg) {
+ /* sanity check */
+ if (pginfo->page_count >= pginfo->num_pages) {
+ EDEB_ERR(4, "page_count >= num_pages, "
+ "page_count=%lx num_pages=%lx "
+ "i=%x", pginfo->page_count,
+ pginfo->num_pages, i);
+ retcode = -EFAULT;
+ goto ehca_set_pagebuf_exit0;
+ }
+ *kpage = phys_to_abs((pbuf->addr & PAGE_MASK)
+ + (pginfo->next_page *
+ PAGE_SIZE));
+ if ((*kpage == 0) && (pbuf->addr != 0)) {
+ EDEB_ERR(4, "pbuf->addr=%lx"
+ " pbuf->size=%lx"
+ " next_page=%lx",
+ pbuf->addr, pbuf->size,
+ pginfo->next_page);
+ retcode = -EFAULT;
+ goto ehca_set_pagebuf_exit0;
+ }
+ (pginfo->next_page)++;
+ (pginfo->page_count)++;
+ kpage++;
+ i++;
+ if (i >= number) break;
+ }
+ if (pginfo->next_page >= numpg) {
+ (pginfo->next_buf)++;
+ pginfo->next_page = 0;
+ }
+ }
+ } else if (pginfo->type == EHCA_MR_PGI_USER) {
+ /* loop over desired chunk entries */
+ /* (@TODO: add support for large pages) */
+ chunk = pginfo->next_chunk;
+ prev_chunk = pginfo->next_chunk;
+ list_for_each_entry_continue(chunk,
+ (&(pginfo->region->chunk_list)),
+ list) {
+ EDEB(9, "chunk->page_list[0]=%lx",
+ (u64)sg_dma_address(&chunk->page_list[0]));
+ for (i = pginfo->next_nmap; i < chunk->nmap; i++) {
+ pgaddr = ( page_to_pfn(chunk->page_list[i].page)
+ << PAGE_SHIFT );
+ *kpage = phys_to_abs(pgaddr);
+ EDEB(9,"pgaddr=%lx *kpage=%lx", pgaddr, *kpage);
+ if (*kpage == 0) {
+ EDEB_ERR(4, "chunk->page_list[i]=%lx"
+ " i=%x mr=%p",
+ (u64)sg_dma_address(
+ &chunk->page_list[i]),
+ i, e_mr);
+ retcode = -EFAULT;
+ goto ehca_set_pagebuf_exit0;
+ }
+ (pginfo->page_count)++;
+ (pginfo->next_nmap)++;
+ kpage++;
+ j++;
+ if (j >= number) break;
+ }
+ if ( (pginfo->next_nmap >= chunk->nmap) &&
+ (j >= number) ) {
+ pginfo->next_nmap = 0;
+ prev_chunk = chunk;
+ break;
+ } else if (pginfo->next_nmap >= chunk->nmap) {
+ pginfo->next_nmap = 0;
+ prev_chunk = chunk;
+ } else if (j >= number)
+ break;
+ else
+ prev_chunk = chunk;
+ }
+ pginfo->next_chunk =
+ list_prepare_entry(prev_chunk,
+ (&(pginfo->region->chunk_list)),
+ list);
+ } else if (pginfo->type == EHCA_MR_PGI_FMR) {
+ /* loop over desired page_list entries */
+ fmrlist = pginfo->page_list + pginfo->next_listelem;
+ for (i = 0; i < number; i++) {
+ *kpage = phys_to_abs(*fmrlist);
+ if (*kpage == 0) {
+ EDEB_ERR(4, "*fmrlist=%lx fmrlist=%p"
+ " next_listelem=%lx", *fmrlist,
+ fmrlist, pginfo->next_listelem);
+ retcode = -EFAULT;
+ goto ehca_set_pagebuf_exit0;
+ }
+ (pginfo->next_listelem)++;
+ (pginfo->page_count)++;
+ fmrlist++;
+ kpage++;
+ }
+ } else {
+ EDEB_ERR(4, "bad pginfo->type=%x", pginfo->type);
+ retcode = -EFAULT;
+ goto ehca_set_pagebuf_exit0;
+ }
+
+ ehca_set_pagebuf_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "retcode=%x e_mr=%p pginfo=%p type=%x num_pages=%lx "
+ "next_buf=%lx next_page=%lx number=%x kpage=%p "
+ "page_count=%lx i=%x next_listelem=%lx region=%p "
+ "next_chunk=%p next_nmap=%lx",
+ retcode, e_mr, pginfo, pginfo->type, pginfo->num_pages,
+ pginfo->next_buf, pginfo->next_page, number, kpage,
+ pginfo->page_count, i, pginfo->next_listelem,
+ pginfo->region, pginfo->next_chunk, pginfo->next_nmap);
+ else
+ EDEB_EX(4, "retcode=%x e_mr=%p pginfo=%p type=%x num_pages=%lx "
+ "next_buf=%lx next_page=%lx number=%x kpage=%p "
+ "page_count=%lx i=%x next_listelem=%lx region=%p "
+ "next_chunk=%p next_nmap=%lx",
+ retcode, e_mr, pginfo, pginfo->type, pginfo->num_pages,
+ pginfo->next_buf, pginfo->next_page, number, kpage,
+ pginfo->page_count, i, pginfo->next_listelem,
+ pginfo->region, pginfo->next_chunk, pginfo->next_nmap);
+ return (retcode);
+} /* end ehca_set_pagebuf() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief setup 1 page from page info page buffer
+ */
+static inline int ehca_set_pagebuf_1(struct ehca_mr *e_mr,
+ struct ehca_mr_pginfo *pginfo,
+ u64 *rpage) /**<OUT*/
+{
+ int retcode = 0;
+ struct ib_phys_buf *tmp_pbuf = 0;
+ u64 *tmp_fmrlist = 0;
+ struct ib_umem_chunk *chunk = 0;
+ struct ib_umem_chunk *prev_chunk = 0;
+ u64 pgaddr = 0;
+
+ EDEB_EN(7, "pginfo=%p type=%x num_pages=%lx next_buf=%lx next_page=%lx "
+ "rpage=%p page_count=%lx next_listelem=%lx region=%p "
+ "next_chunk=%p next_nmap=%lx",
+ pginfo, pginfo->type, pginfo->num_pages, pginfo->next_buf,
+ pginfo->next_page, rpage, pginfo->page_count,
+ pginfo->next_listelem, pginfo->region, pginfo->next_chunk,
+ pginfo->next_nmap);
+
+ if (pginfo->type == EHCA_MR_PGI_PHYS) {
+ /* sanity check */
+ if (pginfo->page_count >= pginfo->num_pages) {
+ EDEB_ERR(4, "page_count >= num_pages, "
+ "page_count=%lx num_pages=%lx",
+ pginfo->page_count, pginfo->num_pages);
+ retcode = -EFAULT;
+ goto ehca_set_pagebuf_1_exit0;
+ }
+ tmp_pbuf = pginfo->phys_buf_array + pginfo->next_buf;
+ *rpage = phys_to_abs(((tmp_pbuf->addr & PAGE_MASK) +
+ (pginfo->next_page * PAGE_SIZE)));
+ if ((*rpage == 0) && (tmp_pbuf->addr != 0)) {
+ EDEB_ERR(4, "tmp_pbuf->addr=%lx"
+ " tmp_pbuf->size=%lx next_page=%lx",
+ tmp_pbuf->addr, tmp_pbuf->size,
+ pginfo->next_page);
+ retcode = -EFAULT;
+ goto ehca_set_pagebuf_1_exit0;
+ }
+ (pginfo->next_page)++;
+ (pginfo->page_count)++;
+ if (pginfo->next_page >= tmp_pbuf->size / PAGE_SIZE) {
+ (pginfo->next_buf)++;
+ pginfo->next_page = 0;
+ }
+ } else if (pginfo->type == EHCA_MR_PGI_USER) {
+ chunk = pginfo->next_chunk;
+ prev_chunk = pginfo->next_chunk;
+ list_for_each_entry_continue(chunk,
+ (&(pginfo->region->chunk_list)),
+ list) {
+ pgaddr = ( page_to_pfn(chunk->page_list[
+ pginfo->next_nmap].page)
+ << PAGE_SHIFT );
+ *rpage = phys_to_abs(pgaddr);
+ EDEB(9,"pgaddr=%lx *rpage=%lx", pgaddr, *rpage);
+ if (*rpage == 0) {
+ EDEB_ERR(4, "chunk->page_list[]=%lx next_nmap=%lx "
+ "mr=%p", (u64)sg_dma_address(
+ &chunk->page_list[
+ pginfo->next_nmap]),
+ pginfo->next_nmap, e_mr);
+ retcode = -EFAULT;
+ goto ehca_set_pagebuf_1_exit0;
+ }
+ (pginfo->page_count)++;
+ (pginfo->next_nmap)++;
+ if (pginfo->next_nmap >= chunk->nmap) {
+ pginfo->next_nmap = 0;
+ prev_chunk = chunk;
+ }
+ break;
+ }
+ pginfo->next_chunk =
+ list_prepare_entry(prev_chunk,
+ (&(pginfo->region->chunk_list)),
+ list);
+ } else if (pginfo->type == EHCA_MR_PGI_FMR) {
+ tmp_fmrlist = pginfo->page_list + pginfo->next_listelem;
+ *rpage = phys_to_abs(*tmp_fmrlist);
+ if (*rpage == 0) {
+ EDEB_ERR(4, "*tmp_fmrlist=%lx tmp_fmrlist=%p"
+ " next_listelem=%lx", *tmp_fmrlist,
+ tmp_fmrlist, pginfo->next_listelem);
+ retcode = -EFAULT;
+ goto ehca_set_pagebuf_1_exit0;
+ }
+ (pginfo->next_listelem)++;
+ (pginfo->page_count)++;
+ } else {
+ EDEB_ERR(4, "bad pginfo->type=%x", pginfo->type);
+ retcode = -EFAULT;
+ goto ehca_set_pagebuf_1_exit0;
+ }
+
+ ehca_set_pagebuf_1_exit0:
+ if (retcode == 0)
+ EDEB_EX(7, "retcode=%x e_mr=%p pginfo=%p type=%x num_pages=%lx "
+ "next_buf=%lx next_page=%lx rpage=%p page_count=%lx "
+ "next_listelem=%lx region=%p next_chunk=%p "
+ "next_nmap=%lx",
+ retcode, e_mr, pginfo, pginfo->type, pginfo->num_pages,
+ pginfo->next_buf, pginfo->next_page, rpage,
+ pginfo->page_count, pginfo->next_listelem,
+ pginfo->region, pginfo->next_chunk, pginfo->next_nmap);
+ else
+ EDEB_EX(4, "retcode=%x e_mr=%p pginfo=%p type=%x num_pages=%lx "
+ "next_buf=%lx next_page=%lx rpage=%p page_count=%lx "
+ "next_listelem=%lx region=%p next_chunk=%p "
+ "next_nmap=%lx",
+ retcode, e_mr, pginfo, pginfo->type, pginfo->num_pages,
+ pginfo->next_buf, pginfo->next_page, rpage,
+ pginfo->page_count, pginfo->next_listelem,
+ pginfo->region, pginfo->next_chunk, pginfo->next_nmap);
+ return (retcode);
+} /* end ehca_set_pagebuf_1() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief check MR if it is a max-MR, i.e. uses whole memory
+ in case it's a max-MR TRUE is returned, else FALSE
+*/
+static inline int ehca_mr_is_maxmr(u64 size,
+ u64 *iova_start)
+{
+ /* a MR is treated as max-MR only if it fits following: */
+ if ((size == ((u64)high_memory - PAGE_OFFSET)) &&
+ (iova_start == (void*)KERNELBASE)) {
+ EDEB(6, "this is a max-MR");
+ return (TRUE);
+ } else
+ return (FALSE);
+} /* end ehca_mr_is_maxmr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+/** @brief map access control for MR/MW.
+ This routine is used for MR and MW.
+*/
+static inline void ehca_mrmw_map_acl(int ib_acl, /**<IN*/
+ u32 *hipz_acl) /**<OUT*/
+{
+ *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() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief sets page size in hipz access control for MR/MW.
+ */
+static inline void ehca_mrmw_set_pgsize_hipz_acl(
+ u32 *hipz_acl) /**<INOUT HIPZ access control */
+{
+ /* @TODO page size of 4k currently hardcoded ... */
+ return;
+} /* end ehca_mrmw_set_pgsize_hipz_acl() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief reverse map access control for MR/MW.
+ This routine is used for MR and MW.
+*/
+static inline void ehca_mrmw_reverse_map_acl(
+ const u32 *hipz_acl, /**<IN*/
+ 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() */
+
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief map HIPZ rc to IB retcodes for MR/MW allocations
+ Used for hipz_mr_reg_alloc and hipz_mw_alloc.
+*/
+static inline int ehca_mrmw_map_rc_alloc(const u64 rc)
+{
+ switch (rc) {
+ case H_Success: /* successful completion */
+ return (0);
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RT_PARM: /* invalid resource type */
+ case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */
+ case H_MLENGTH_PARM: /* invalid memory length */
+ case H_MEM_ACCESS_PARM: /* invalid access controls */
+ case H_Constrained: /* resource constraint */
+ return (-EINVAL);
+ case H_Busy: /* long busy */
+ return (-EBUSY);
+ default:
+ return (-EINVAL);
+ }
+} /* end ehca_mrmw_map_rc_alloc() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief map HIPZ rc to IB retcodes for MR register rpage
+ Used for hipz_h_register_rpage_mr at registering last page
+*/
+static inline int ehca_mrmw_map_rc_rrpg_last(const u64 rc)
+{
+ switch (rc) {
+ case H_Success: /* registration complete */
+ return (0);
+ case H_PAGE_REGISTERED: /* page registered */
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+/* case H_QT_PARM: invalid queue type */
+ case H_Parameter: /* invalid logical address, */
+ /* or count zero or greater 512 */
+ case H_TABLE_FULL: /* page table full */
+ case H_Hardware: /* HCA not operational */
+ return (-EINVAL);
+ case H_Busy: /* long busy */
+ return (-EBUSY);
+ default:
+ return (-EINVAL);
+ }
+} /* end ehca_mrmw_map_rc_rrpg_last() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief map HIPZ rc to IB retcodes for MR register rpage
+ Used for hipz_h_register_rpage_mr at registering one page, but not last page
+*/
+static inline int ehca_mrmw_map_rc_rrpg_notlast(const u64 rc)
+{
+ switch (rc) {
+ case H_PAGE_REGISTERED: /* page registered */
+ return (0);
+ case H_Success: /* registration complete */
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+/* case H_QT_PARM: invalid queue type */
+ case H_Parameter: /* invalid logical address, */
+ /* or count zero or greater 512 */
+ case H_TABLE_FULL: /* page table full */
+ case H_Hardware: /* HCA not operational */
+ return (-EINVAL);
+ case H_Busy: /* long busy */
+ return (-EBUSY);
+ default:
+ return (-EINVAL);
+ }
+} /* end ehca_mrmw_map_rc_rrpg_notlast() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief map HIPZ rc to IB retcodes for MR query
+ Used for hipz_mr_query.
+*/
+static inline int ehca_mrmw_map_rc_query_mr(const u64 rc)
+{
+ switch (rc) {
+ case H_Success: /* successful completion */
+ return (0);
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+ return (-EINVAL);
+ case H_Busy: /* long busy */
+ return (-EBUSY);
+ default:
+ return (-EINVAL);
+ }
+} /* end ehca_mrmw_map_rc_query_mr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief map HIPZ rc to IB retcodes for freeing MR resource
+ Used for hipz_h_free_resource_mr
+*/
+static inline int ehca_mrmw_map_rc_free_mr(const u64 rc)
+{
+ switch (rc) {
+ case H_Success: /* resource freed */
+ return (0);
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+ case H_R_STATE: /* invalid resource state */
+ case H_Hardware: /* HCA not operational */
+ return (-EINVAL);
+ case H_Resource: /* Resource in use */
+ case H_Busy: /* long busy */
+ return (-EBUSY);
+ default:
+ return (-EINVAL);
+ }
+} /* end ehca_mrmw_map_rc_free_mr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief map HIPZ rc to IB retcodes for freeing MW resource
+ Used for hipz_h_free_resource_mw
+*/
+static inline int ehca_mrmw_map_rc_free_mw(const u64 rc)
+{
+ switch (rc) {
+ case H_Success: /* resource freed */
+ return (0);
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+ case H_R_STATE: /* invalid resource state */
+ case H_Hardware: /* HCA not operational */
+ return (-EINVAL);
+ case H_Resource: /* Resource in use */
+ case H_Busy: /* long busy */
+ return (-EBUSY);
+ default:
+ return (-EINVAL);
+ }
+} /* end ehca_mrmw_map_rc_free_mw() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief map HIPZ rc to IB retcodes for SMR registrations
+ Used for hipz_h_register_smr.
+*/
+static inline int ehca_mrmw_map_rc_reg_smr(const u64 rc)
+{
+ switch (rc) {
+ case H_Success: /* successful completion */
+ return (0);
+ case H_ADAPTER_PARM: /* invalid adapter handle */
+ case H_RH_PARM: /* invalid resource handle */
+ case H_MEM_PARM: /* invalid MR virtual address */
+ case H_MEM_ACCESS_PARM: /* invalid access controls */
+ case H_NOT_ENOUGH_RESOURCES: /* insufficient resources */
+ return (-EINVAL);
+ case H_Busy: /* long busy */
+ return (-EBUSY);
+ default:
+ return (-EINVAL);
+ }
+} /* end ehca_mrmw_map_rc_reg_smr() */
+
+/*----------------------------------------------------------------------*/
+/*----------------------------------------------------------------------*/
+
+/** @brief MR destructor and constructor
+ used in Reregister MR verb, memsets ehca_mr_t to 0,
+ except struct ib_mr and spinlock
+ */
+static inline void ehca_mr_deletenew(struct ehca_mr *mr)
+{
+ u32 offset = (u64)(&mr->flags) - (u64)mr;
+ memset(&mr->flags, 0, sizeof(*mr) - offset);
+} /* end ehca_mr_deletenew() */
+
+#endif /*_EHCA_MRMW_H_*/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
\
 
 \ /
  Last update: 2006-02-18 02:03    [W:0.317 / U:26.304 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site