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android_kernel_samsung_msm8976/drivers/infiniband/hw/ehca/ehca_mrmw.c

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/*
* 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>
*
* 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 <asm/current.h>
#include "ehca_iverbs.h"
#include "ehca_mrmw.h"
#include "hcp_if.h"
#include "hipz_hw.h"
static struct kmem_cache *mr_cache;
static struct kmem_cache *mw_cache;
static struct ehca_mr *ehca_mr_new(void)
{
struct ehca_mr *me;
me = kmem_cache_alloc(mr_cache, GFP_KERNEL);
if (me) {
memset(me, 0, sizeof(struct ehca_mr));
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_alloc(mw_cache, GFP_KERNEL);
if (me) {
memset(me, 0, sizeof(struct ehca_mw));
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, (u64*)KERNELBASE,
mr_access_flags, e_pd,
&e_maxmr->ib.ib_mr.lkey,
&e_maxmr->ib.ib_mr.rkey);
if (ret) {
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, "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;
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;
struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
u32 num_pages_mr;
u32 num_pages_4k; /* 4k portion "pages" */
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=%lx 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;
}
/* determine number of MR pages */
num_pages_mr = ((((u64)iova_start % PAGE_SIZE) + size +
PAGE_SIZE - 1) / PAGE_SIZE);
num_pages_4k = ((((u64)iova_start % EHCA_PAGESIZE) + size +
EHCA_PAGESIZE - 1) / EHCA_PAGESIZE);
/* 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 {
pginfo.type = EHCA_MR_PGI_PHYS;
pginfo.num_pages = num_pages_mr;
pginfo.num_4k = num_pages_4k;
pginfo.num_phys_buf = num_phys_buf;
pginfo.phys_buf_array = phys_buf_array;
pginfo.next_4k = (((u64)iova_start & ~PAGE_MASK) /
EHCA_PAGESIZE);
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);
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, "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;
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={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
int ret;
u32 num_pages_mr;
u32 num_pages_4k; /* 4k portion "pages" */
if (!pd) {
ehca_gen_err("bad pd=%p", pd);
return ERR_PTR(-EFAULT);
}
if (!region) {
ehca_err(pd->device, "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
*/
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 (region->page_size != PAGE_SIZE) {
ehca_err(pd->device, "page size not supported, "
"region->page_size=%x", region->page_size);
ib_mr = ERR_PTR(-EINVAL);
goto reg_user_mr_exit0;
}
if ((region->length == 0) ||
((region->virt_base + region->length) < region->virt_base)) {
ehca_err(pd->device, "bad input values: length=%lx "
"virt_base=%lx", region->length, region->virt_base);
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;
}
/* determine number of MR pages */
num_pages_mr = (((region->virt_base % PAGE_SIZE) + region->length +
PAGE_SIZE - 1) / PAGE_SIZE);
num_pages_4k = (((region->virt_base % EHCA_PAGESIZE) + region->length +
EHCA_PAGESIZE - 1) / EHCA_PAGESIZE);
/* register MR on HCA */
pginfo.type = EHCA_MR_PGI_USER;
pginfo.num_pages = num_pages_mr;
pginfo.num_4k = num_pages_4k;
pginfo.region = region;
pginfo.next_4k = region->offset / EHCA_PAGESIZE;
pginfo.next_chunk = list_prepare_entry(pginfo.next_chunk,
(&region->chunk_list),
list);
ret = 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 (ret) {
ib_mr = ERR_PTR(ret);
goto reg_user_mr_exit1;
}
/* successful registration of all pages */
return &e_mr->ib.ib_mr;
reg_user_mr_exit1:
ehca_mr_delete(e_mr);
reg_user_mr_exit0:
if (IS_ERR(ib_mr))
ehca_err(pd->device, "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 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);
struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd);
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_pages_mr = 0;
u32 num_pages_4k = 0; /* 4k portion "pages" */
struct ehca_mr_pginfo pginfo={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
u32 cur_pid = current->tgid;
if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
(my_pd->ownpid != cur_pid)) {
ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x",
cur_pid, my_pd->ownpid);
ret = -EINVAL;
goto rereg_phys_mr_exit0;
}
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 == 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 */
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=%lx "
"iova_start=%p", new_size, iova_start);
ret = -EINVAL;
goto rereg_phys_mr_exit1;
}
num_pages_mr = ((((u64)new_start % PAGE_SIZE) + new_size +
PAGE_SIZE - 1) / PAGE_SIZE);
num_pages_4k = ((((u64)new_start % EHCA_PAGESIZE) + new_size +
EHCA_PAGESIZE - 1) / EHCA_PAGESIZE);
pginfo.type = EHCA_MR_PGI_PHYS;
pginfo.num_pages = num_pages_mr;
pginfo.num_4k = num_pages_4k;
pginfo.num_phys_buf = num_phys_buf;
pginfo.phys_buf_array = phys_buf_array;
pginfo.next_4k = (((u64)iova_start & ~PAGE_MASK) /
EHCA_PAGESIZE);
}
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=%x 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);
struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd);
u32 cur_pid = current->tgid;
unsigned long sl_flags;
struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
(my_pd->ownpid != cur_pid)) {
ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x",
cur_pid, my_pd->ownpid);
ret = -EINVAL;
goto query_mr_exit0;
}
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=%lx mr=%p "
"hca_hndl=%lx mr_hndl=%lx lkey=%x",
h_ret, mr, shca->ipz_hca_handle.handle,
e_mr->ipz_mr_handle.handle, mr->lkey);
ret = ehca_mrmw_map_hrc_query_mr(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=%x 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);
struct ehca_pd *my_pd = container_of(mr->pd, struct ehca_pd, ib_pd);
u32 cur_pid = current->tgid;
if (my_pd->ib_pd.uobject && my_pd->ib_pd.uobject->context &&
(my_pd->ownpid != cur_pid)) {
ehca_err(mr->device, "Invalid caller pid=%x ownpid=%x",
cur_pid, my_pd->ownpid);
ret = -EINVAL;
goto dereg_mr_exit0;
}
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=%lx shca=%p "
"e_mr=%p hca_hndl=%lx mr_hndl=%lx mr->lkey=%x",
h_ret, shca, e_mr, shca->ipz_hca_handle.handle,
e_mr->ipz_mr_handle.handle, mr->lkey);
ret = ehca_mrmw_map_hrc_free_mr(h_ret);
goto dereg_mr_exit0;
}
/* successful deregistration */
ehca_mr_delete(e_mr);
dereg_mr_exit0:
if (ret)
ehca_err(mr->device, "ret=%x mr=%p", ret, mr);
return ret;
} /* end ehca_dereg_mr() */
/*----------------------------------------------------------------------*/
struct ib_mw *ehca_alloc_mw(struct ib_pd *pd)
{
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 = {{0},0};
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=%lx "
"shca=%p hca_hndl=%lx mw=%p",
h_ret, shca, shca->ipz_hca_handle.handle, e_mw);
ib_mw = ERR_PTR(ehca_mrmw_map_hrc_alloc(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, "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)
{
/* 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=%lx shca=%p "
"mw=%p rkey=%x hca_hndl=%lx mw_hndl=%lx",
h_ret, shca, mw, mw->rkey, shca->ipz_hca_handle.handle,
e_mw->ipz_mw_handle.handle);
return ehca_mrmw_map_hrc_free_mw(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={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
/* 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;
}
if (((1 << fmr_attr->page_shift) != EHCA_PAGESIZE) &&
((1 << fmr_attr->page_shift) != PAGE_SIZE)) {
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 */
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);
if (ret) {
ib_fmr = ERR_PTR(ret);
goto alloc_fmr_exit1;
}
/* successful */
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:
if (IS_ERR(ib_fmr))
ehca_err(pd->device, "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 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={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
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=%lx 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);
}
pginfo.type = EHCA_MR_PGI_FMR;
pginfo.num_pages = list_len;
pginfo.num_4k = list_len * (e_fmr->fmr_page_size / EHCA_PAGESIZE);
pginfo.page_list = page_list;
pginfo.next_4k = ((iova & (e_fmr->fmr_page_size-1)) /
EHCA_PAGESIZE);
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=%x fmr=%p page_list=%p list_len=%x "
"iova=%lx",
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;
if (!ib_fmr) {
ehca_gen_err("bad fmr=%p in list", ib_fmr);
ret = -EINVAL;
goto unmap_fmr_exit0;
}
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=%x 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=%lx e_fmr=%p "
"hca_hndl=%lx fmr_hndl=%lx fmr->lkey=%x",
h_ret, e_fmr, shca->ipz_hca_handle.handle,
e_fmr->ipz_mr_handle.handle, fmr->lkey);
ret = ehca_mrmw_map_hrc_free_mr(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=%x fmr=%p", ret, fmr);
return ret;
} /* 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, /*OUT*/
u32 *rkey) /*OUT*/
{
int ret;
u64 h_ret;
u32 hipz_acl;
struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
ehca_mrmw_map_acl(acl, &hipz_acl);
ehca_mrmw_set_pgsize_hipz_acl(&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=%lx "
"hca_hndl=%lx", h_ret, shca->ipz_hca_handle.handle);
ret = ehca_mrmw_map_hrc_alloc(h_ret);
goto ehca_reg_mr_exit0;
}
e_mr->ipz_mr_handle = hipzout.handle;
ret = ehca_reg_mr_rpages(shca, e_mr, pginfo);
if (ret)
goto ehca_reg_mr_exit1;
/* successful registration */
e_mr->num_pages = pginfo->num_pages;
e_mr->num_4k = pginfo->num_4k;
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=%lx shca=%p e_mr=%p "
"iova_start=%p size=%lx acl=%x e_pd=%p lkey=%x "
"pginfo=%p num_pages=%lx num_4k=%lx ret=%x",
h_ret, shca, e_mr, iova_start, size, acl, e_pd,
hipzout.lkey, pginfo, pginfo->num_pages,
pginfo->num_4k, 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=%x shca=%p e_mr=%p "
"iova_start=%p size=%lx acl=%x e_pd=%p pginfo=%p "
"num_pages=%lx num_4k=%lx",
ret, shca, e_mr, iova_start, size, acl, e_pd, pginfo,
pginfo->num_pages, pginfo->num_4k);
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;
kpage = ehca_alloc_fw_ctrlblock();
if (!kpage) {
ehca_err(&shca->ib_device, "kpage alloc failed");
ret = -ENOMEM;
goto ehca_reg_mr_rpages_exit0;
}
/* max 512 pages per shot */
for (i = 0; i < ((pginfo->num_4k + 512 - 1) / 512); i++) {
if (i == ((pginfo->num_4k + 512 - 1) / 512) - 1) {
rnum = pginfo->num_4k % 512; /* last shot */
if (rnum == 0)
rnum = 512; /* last shot is full */
} else
rnum = 512;
if (rnum > 1) {
ret = ehca_set_pagebuf(e_mr, pginfo, rnum, kpage);
if (ret) {
ehca_err(&shca->ib_device, "ehca_set_pagebuf "
"bad rc, ret=%x rnum=%x kpage=%p",
ret, rnum, kpage);
ret = -EFAULT;
goto ehca_reg_mr_rpages_exit1;
}
rpage = virt_to_abs(kpage);
if (!rpage) {
ehca_err(&shca->ib_device, "kpage=%p i=%x",
kpage, i);
ret = -EFAULT;
goto ehca_reg_mr_rpages_exit1;
}
} else { /* rnum==1 */
ret = ehca_set_pagebuf_1(e_mr, pginfo, &rpage);
if (ret) {
ehca_err(&shca->ib_device, "ehca_set_pagebuf_1 "
"bad rc, ret=%x i=%x", ret, i);
ret = -EFAULT;
goto ehca_reg_mr_rpages_exit1;
}
}
h_ret = hipz_h_register_rpage_mr(shca->ipz_hca_handle, e_mr,
0, /* pagesize 4k */
0, rpage, rnum);
if (i == ((pginfo->num_4k + 512 - 1) / 512) - 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=%lx "
"e_mr=%p i=%x hca_hndl=%lx mr_hndl=%lx"
" 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 = ehca_mrmw_map_hrc_rrpg_last(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=%lx e_mr=%p i=%x lkey=%x hca_hndl=%lx "
"mr_hndl=%lx", h_ret, e_mr, i,
e_mr->ib.ib_mr.lkey,
shca->ipz_hca_handle.handle,
e_mr->ipz_mr_handle.handle);
ret = ehca_mrmw_map_hrc_rrpg_notlast(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=%x shca=%p e_mr=%p pginfo=%p "
"num_pages=%lx num_4k=%lx", ret, shca, e_mr, pginfo,
pginfo->num_pages, pginfo->num_4k);
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 = {{0},0,0,0,0,0};
ehca_mrmw_map_acl(acl, &hipz_acl);
ehca_mrmw_set_pgsize_hipz_acl(&hipz_acl);
kpage = ehca_alloc_fw_ctrlblock();
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(e_mr, pginfo, pginfo->num_4k, kpage);
if (ret) {
ehca_err(&shca->ib_device, "set pagebuf failed, e_mr=%p "
"pginfo=%p type=%x num_pages=%lx num_4k=%lx kpage=%p",
e_mr, pginfo, pginfo->type, pginfo->num_pages,
pginfo->num_4k,kpage);
goto ehca_rereg_mr_rereg1_exit1;
}
rpage = virt_to_abs(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=%lx 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=%lx e_mr=%p "
"mr_handle=%lx 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_pages = pginfo->num_pages;
e_mr->num_4k = pginfo->num_4k;
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=%x lkey=%x rkey=%x "
"pginfo=%p num_pages=%lx num_4k=%lx",
ret, *lkey, *rkey, pginfo, pginfo->num_pages,
pginfo->num_4k);
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_4k > 512) || (e_mr->num_4k > 512) ||
(pginfo->num_4k > e_mr->num_4k)) {
ehca_dbg(&shca->ib_device, "Rereg3 case, pginfo->num_4k=%lx "
"e_mr->num_4k=%x", pginfo->num_4k, e_mr->num_4k);
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=%lx e_mr=%p hca_hndl=%lx mr_hndl=%lx "
"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 = ehca_mrmw_map_hrc_free_mr(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->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);
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=%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 rereg_1_hcall=%x "
"rereg_3_hcall=%x", ret, shca, e_mr, iova_start, size,
acl, e_pd, pginfo, pginfo->num_pages, *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;
int rereg_1_hcall = 1; /* 1: use hipz_mr_reregister directly */
int rereg_3_hcall = 0; /* 1: use 3 hipz calls for unmapping */
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={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
struct ehca_mr_hipzout_parms hipzout = {{0},0,0,0,0,0};
/* first check if reregistration hCall can be used for unmap */
if (e_fmr->fmr_max_pages > 512) {
rereg_1_hcall = 0;
rereg_3_hcall = 1;
}
if (rereg_1_hcall) {
/*
* 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) {
/*
* 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=%lx e_fmr=%p hca_hndl=%lx "
"mr_hndl=%lx 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);
rereg_3_hcall = 1;
} else {
/* successful reregistration */
e_fmr->start = NULL;
e_fmr->size = 0;
tmp_lkey = hipzout.lkey;
tmp_rkey = hipzout.rkey;
}
}
if (rereg_3_hcall) {
struct ehca_mr save_mr;
/* 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=%lx e_fmr=%p hca_hndl=%lx mr_hndl=%lx "
"lkey=%x",
h_ret, e_fmr, shca->ipz_hca_handle.handle,
e_fmr->ipz_mr_handle.handle,
e_fmr->ib.ib_fmr.lkey);
ret = ehca_mrmw_map_hrc_free_mr(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->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;
pginfo.num_4k = 0;
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);
if (ret) {
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:
if (ret)
ehca_err(&shca->ib_device, "ret=%x tmp_lkey=%x tmp_rkey=%x "
"fmr_max_pages=%x rereg_1_hcall=%x rereg_3_hcall=%x",
ret, tmp_lkey, tmp_rkey, e_fmr->fmr_max_pages,
rereg_1_hcall, rereg_3_hcall);
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 = {{0},0,0,0,0,0};
ehca_mrmw_map_acl(acl, &hipz_acl);
ehca_mrmw_set_pgsize_hipz_acl(&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=%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",
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 = ehca_mrmw_map_hrc_reg_smr(h_ret);
goto ehca_reg_smr_exit0;
}
/* successful registration */
e_newmr->num_pages = e_origmr->num_pages;
e_newmr->num_4k = e_origmr->num_4k;
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=%x 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() */
/*----------------------------------------------------------------------*/
/* 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={0,0,0,0,0,0,0,NULL,0,NULL,NULL,0,NULL,0};
struct ib_phys_buf ib_pbuf;
u32 num_pages_mr;
u32 num_pages_4k; /* 4k portion "pages" */
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 = (u64)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);
num_pages_4k = ((((u64)iova_start % EHCA_PAGESIZE) + size_maxmr +
EHCA_PAGESIZE - 1) / EHCA_PAGESIZE);
pginfo.type = EHCA_MR_PGI_PHYS;
pginfo.num_pages = num_pages_mr;
pginfo.num_4k = num_pages_4k;
pginfo.num_phys_buf = 1;
pginfo.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);
if (ret) {
ehca_err(&shca->ib_device, "reg of internal max MR failed, "
"e_mr=%p iova_start=%p size_maxmr=%lx num_pages_mr=%x "
"num_pages_4k=%x", e_mr, iova_start, size_maxmr,
num_pages_mr, num_pages_4k);
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=%x 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 = {{0},0,0,0,0,0};
ehca_mrmw_map_acl(acl, &hipz_acl);
ehca_mrmw_set_pgsize_hipz_acl(&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=%lx "
"e_origmr=%p hca_hndl=%lx mr_hndl=%lx lkey=%x",
h_ret, e_origmr, shca->ipz_hca_handle.handle,
e_origmr->ipz_mr_handle.handle,
e_origmr->ib.ib_mr.lkey);
return ehca_mrmw_map_hrc_reg_smr(h_ret);
}
/* successful registration */
e_newmr->num_pages = e_origmr->num_pages;
e_newmr->num_4k = e_origmr->num_4k;
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=%x 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=%x 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=%lx pbuf->size=%lx",
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=%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)) {
ehca_gen_err("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)) {
ehca_gen_err("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() */
/*----------------------------------------------------------------------*/
/* 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=%lx 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() */
/*----------------------------------------------------------------------*/
/* setup page buffer from page info */
int ehca_set_pagebuf(struct ehca_mr *e_mr,
struct ehca_mr_pginfo *pginfo,
u32 number,
u64 *kpage)
{
int ret = 0;
struct ib_umem_chunk *prev_chunk;
struct ib_umem_chunk *chunk;
struct ib_phys_buf *pbuf;
u64 *fmrlist;
u64 num4k, pgaddr, offs4k;
u32 i = 0;
u32 j = 0;
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;
num4k = ((pbuf->addr % EHCA_PAGESIZE) + pbuf->size +
EHCA_PAGESIZE - 1) / EHCA_PAGESIZE;
offs4k = (pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE;
while (pginfo->next_4k < offs4k + num4k) {
/* sanity check */
if ((pginfo->page_cnt >= pginfo->num_pages) ||
(pginfo->page_4k_cnt >= pginfo->num_4k)) {
ehca_gen_err("page_cnt >= num_pages, "
"page_cnt=%lx "
"num_pages=%lx "
"page_4k_cnt=%lx "
"num_4k=%lx i=%x",
pginfo->page_cnt,
pginfo->num_pages,
pginfo->page_4k_cnt,
pginfo->num_4k, i);
ret = -EFAULT;
goto ehca_set_pagebuf_exit0;
}
*kpage = phys_to_abs(
(pbuf->addr & EHCA_PAGEMASK)
+ (pginfo->next_4k * EHCA_PAGESIZE));
if ( !(*kpage) && pbuf->addr ) {
ehca_gen_err("pbuf->addr=%lx "
"pbuf->size=%lx "
"next_4k=%lx", pbuf->addr,
pbuf->size,
pginfo->next_4k);
ret = -EFAULT;
goto ehca_set_pagebuf_exit0;
}
(pginfo->page_4k_cnt)++;
(pginfo->next_4k)++;
if (pginfo->next_4k %
(PAGE_SIZE / EHCA_PAGESIZE) == 0)
(pginfo->page_cnt)++;
kpage++;
i++;
if (i >= number) break;
}
if (pginfo->next_4k >= offs4k + num4k) {
(pginfo->next_buf)++;
pginfo->next_4k = 0;
}
}
} else if (pginfo->type == EHCA_MR_PGI_USER) {
/* loop over desired chunk entries */
chunk = pginfo->next_chunk;
prev_chunk = pginfo->next_chunk;
list_for_each_entry_continue(chunk,
(&(pginfo->region->chunk_list)),
list) {
for (i = pginfo->next_nmap; i < chunk->nmap; ) {
pgaddr = ( page_to_pfn(chunk->page_list[i].page)
<< PAGE_SHIFT );
*kpage = phys_to_abs(pgaddr +
(pginfo->next_4k *
EHCA_PAGESIZE));
if ( !(*kpage) ) {
ehca_gen_err("pgaddr=%lx "
"chunk->page_list[i]=%lx "
"i=%x next_4k=%lx mr=%p",
pgaddr,
(u64)sg_dma_address(
&chunk->
page_list[i]),
i, pginfo->next_4k, e_mr);
ret = -EFAULT;
goto ehca_set_pagebuf_exit0;
}
(pginfo->page_4k_cnt)++;
(pginfo->next_4k)++;
kpage++;
if (pginfo->next_4k %
(PAGE_SIZE / EHCA_PAGESIZE) == 0) {
(pginfo->page_cnt)++;
(pginfo->next_nmap)++;
pginfo->next_4k = 0;
i++;
}
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 & EHCA_PAGEMASK) +
pginfo->next_4k * EHCA_PAGESIZE);
if ( !(*kpage) ) {
ehca_gen_err("*fmrlist=%lx fmrlist=%p "
"next_listelem=%lx next_4k=%lx",
*fmrlist, fmrlist,
pginfo->next_listelem,
pginfo->next_4k);
ret = -EFAULT;
goto ehca_set_pagebuf_exit0;
}
(pginfo->page_4k_cnt)++;
(pginfo->next_4k)++;
kpage++;
if (pginfo->next_4k %
(e_mr->fmr_page_size / EHCA_PAGESIZE) == 0) {
(pginfo->page_cnt)++;
(pginfo->next_listelem)++;
fmrlist++;
pginfo->next_4k = 0;
}
}
} else {
ehca_gen_err("bad pginfo->type=%x", pginfo->type);
ret = -EFAULT;
goto ehca_set_pagebuf_exit0;
}
ehca_set_pagebuf_exit0:
if (ret)
ehca_gen_err("ret=%x e_mr=%p pginfo=%p type=%x num_pages=%lx "
"num_4k=%lx next_buf=%lx next_4k=%lx number=%x "
"kpage=%p page_cnt=%lx page_4k_cnt=%lx i=%x "
"next_listelem=%lx region=%p next_chunk=%p "
"next_nmap=%lx", ret, e_mr, pginfo, pginfo->type,
pginfo->num_pages, pginfo->num_4k,
pginfo->next_buf, pginfo->next_4k, number, kpage,
pginfo->page_cnt, pginfo->page_4k_cnt, i,
pginfo->next_listelem, pginfo->region,
pginfo->next_chunk, pginfo->next_nmap);
return ret;
} /* end ehca_set_pagebuf() */
/*----------------------------------------------------------------------*/
/* setup 1 page from page info page buffer */
int ehca_set_pagebuf_1(struct ehca_mr *e_mr,
struct ehca_mr_pginfo *pginfo,
u64 *rpage)
{
int ret = 0;
struct ib_phys_buf *tmp_pbuf;
u64 *fmrlist;
struct ib_umem_chunk *chunk;
struct ib_umem_chunk *prev_chunk;
u64 pgaddr, num4k, offs4k;
if (pginfo->type == EHCA_MR_PGI_PHYS) {
/* sanity check */
if ((pginfo->page_cnt >= pginfo->num_pages) ||
(pginfo->page_4k_cnt >= pginfo->num_4k)) {
ehca_gen_err("page_cnt >= num_pages, page_cnt=%lx "
"num_pages=%lx page_4k_cnt=%lx num_4k=%lx",
pginfo->page_cnt, pginfo->num_pages,
pginfo->page_4k_cnt, pginfo->num_4k);
ret = -EFAULT;
goto ehca_set_pagebuf_1_exit0;
}
tmp_pbuf = pginfo->phys_buf_array + pginfo->next_buf;
num4k = ((tmp_pbuf->addr % EHCA_PAGESIZE) + tmp_pbuf->size +
EHCA_PAGESIZE - 1) / EHCA_PAGESIZE;
offs4k = (tmp_pbuf->addr & ~PAGE_MASK) / EHCA_PAGESIZE;
*rpage = phys_to_abs((tmp_pbuf->addr & EHCA_PAGEMASK) +
(pginfo->next_4k * EHCA_PAGESIZE));
if ( !(*rpage) && tmp_pbuf->addr ) {
ehca_gen_err("tmp_pbuf->addr=%lx"
" tmp_pbuf->size=%lx next_4k=%lx",
tmp_pbuf->addr, tmp_pbuf->size,
pginfo->next_4k);
ret = -EFAULT;
goto ehca_set_pagebuf_1_exit0;
}
(pginfo->page_4k_cnt)++;
(pginfo->next_4k)++;
if (pginfo->next_4k % (PAGE_SIZE / EHCA_PAGESIZE) == 0)
(pginfo->page_cnt)++;
if (pginfo->next_4k >= offs4k + num4k) {
(pginfo->next_buf)++;
pginfo->next_4k = 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 +
(pginfo->next_4k * EHCA_PAGESIZE));
if ( !(*rpage) ) {
ehca_gen_err("pgaddr=%lx chunk->page_list[]=%lx"
" next_nmap=%lx next_4k=%lx mr=%p",
pgaddr, (u64)sg_dma_address(
&chunk->page_list[
pginfo->
next_nmap]),
pginfo->next_nmap, pginfo->next_4k,
e_mr);
ret = -EFAULT;
goto ehca_set_pagebuf_1_exit0;
}
(pginfo->page_4k_cnt)++;
(pginfo->next_4k)++;
if (pginfo->next_4k %
(PAGE_SIZE / EHCA_PAGESIZE) == 0) {
(pginfo->page_cnt)++;
(pginfo->next_nmap)++;
pginfo->next_4k = 0;
}
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) {
fmrlist = pginfo->page_list + pginfo->next_listelem;
*rpage = phys_to_abs((*fmrlist & EHCA_PAGEMASK) +
pginfo->next_4k * EHCA_PAGESIZE);
if ( !(*rpage) ) {
ehca_gen_err("*fmrlist=%lx fmrlist=%p "
"next_listelem=%lx next_4k=%lx",
*fmrlist, fmrlist, pginfo->next_listelem,
pginfo->next_4k);
ret = -EFAULT;
goto ehca_set_pagebuf_1_exit0;
}
(pginfo->page_4k_cnt)++;
(pginfo->next_4k)++;
if (pginfo->next_4k %
(e_mr->fmr_page_size / EHCA_PAGESIZE) == 0) {
(pginfo->page_cnt)++;
(pginfo->next_listelem)++;
pginfo->next_4k = 0;
}
} else {
ehca_gen_err("bad pginfo->type=%x", pginfo->type);
ret = -EFAULT;
goto ehca_set_pagebuf_1_exit0;
}
ehca_set_pagebuf_1_exit0:
if (ret)
ehca_gen_err("ret=%x e_mr=%p pginfo=%p type=%x num_pages=%lx "
"num_4k=%lx next_buf=%lx next_4k=%lx rpage=%p "
"page_cnt=%lx page_4k_cnt=%lx next_listelem=%lx "
"region=%p next_chunk=%p next_nmap=%lx", ret, e_mr,
pginfo, pginfo->type, pginfo->num_pages,
pginfo->num_4k, pginfo->next_buf, pginfo->next_4k,
rpage, pginfo->page_cnt, pginfo->page_4k_cnt,
pginfo->next_listelem, pginfo->region,
pginfo->next_chunk, pginfo->next_nmap);
return ret;
} /* end ehca_set_pagebuf_1() */
/*----------------------------------------------------------------------*/
/*
* 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 == ((u64)high_memory - PAGE_OFFSET)) &&
(iova_start == (void*)KERNELBASE)) {
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 *hipz_acl) /*INOUT*/
{
return; /* HCA supports only 4k */
} /* 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() */
/*----------------------------------------------------------------------*/
/*
* map HIPZ rc to IB retcodes for MR/MW allocations
* Used for hipz_mr_reg_alloc and hipz_mw_alloc.
*/
int ehca_mrmw_map_hrc_alloc(const u64 hipz_rc)
{
switch (hipz_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_hrc_alloc() */
/*----------------------------------------------------------------------*/
/*
* map HIPZ rc to IB retcodes for MR register rpage
* Used for hipz_h_register_rpage_mr at registering last page
*/
int ehca_mrmw_map_hrc_rrpg_last(const u64 hipz_rc)
{
switch (hipz_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_hrc_rrpg_last() */
/*----------------------------------------------------------------------*/
/*
* 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
*/
int ehca_mrmw_map_hrc_rrpg_notlast(const u64 hipz_rc)
{
switch (hipz_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_hrc_rrpg_notlast() */
/*----------------------------------------------------------------------*/
/* map HIPZ rc to IB retcodes for MR query. Used for hipz_mr_query. */
int ehca_mrmw_map_hrc_query_mr(const u64 hipz_rc)
{
switch (hipz_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_hrc_query_mr() */
/*----------------------------------------------------------------------*/
/*----------------------------------------------------------------------*/
/*
* map HIPZ rc to IB retcodes for freeing MR resource
* Used for hipz_h_free_resource_mr
*/
int ehca_mrmw_map_hrc_free_mr(const u64 hipz_rc)
{
switch (hipz_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_hrc_free_mr() */
/*----------------------------------------------------------------------*/
/*
* map HIPZ rc to IB retcodes for freeing MW resource
* Used for hipz_h_free_resource_mw
*/
int ehca_mrmw_map_hrc_free_mw(const u64 hipz_rc)
{
switch (hipz_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_hrc_free_mw() */
/*----------------------------------------------------------------------*/
/*
* map HIPZ rc to IB retcodes for SMR registrations
* Used for hipz_h_register_smr.
*/
int ehca_mrmw_map_hrc_reg_smr(const u64 hipz_rc)
{
switch (hipz_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_hrc_reg_smr() */
/*----------------------------------------------------------------------*/
/*
* 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_pages = 0;
mr->num_4k = 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));
mr->nr_of_pages = 0;
mr->pagearray = NULL;
} /* 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, NULL);
if (!mr_cache)
return -ENOMEM;
mw_cache = kmem_cache_create("ehca_cache_mw",
sizeof(struct ehca_mw), 0,
SLAB_HWCACHE_ALIGN,
NULL, 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);
}
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