freebsd-dev/sys/dev/mthca/mthca_uar.c
Hans Petter Selasky 33ec1ccbae Import the mthca kernel side infiniband driver from Linux 4.9 and fix
compilation under FreeBSD. The mthca driver was temporarily removed as
part of the Linux 4.9 RoCE/infinband upgrade.

Top commit in Linux source tree:
69973b830859bc6529a7a0468ba0d80ee5117826

Sponsored by:	Mellanox Technologies
2018-02-13 17:04:34 +00:00

77 lines
2.3 KiB
C

/*
* Copyright (c) 2005 Topspin Communications. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "mthca_dev.h"
#include "mthca_memfree.h"
int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar)
{
uar->index = mthca_alloc(&dev->uar_table.alloc);
if (uar->index == -1)
return -ENOMEM;
uar->pfn = (pci_resource_start(dev->pdev, 2) >> PAGE_SHIFT) + uar->index;
return 0;
}
void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar)
{
mthca_free(&dev->uar_table.alloc, uar->index);
}
int mthca_init_uar_table(struct mthca_dev *dev)
{
int ret;
ret = mthca_alloc_init(&dev->uar_table.alloc,
dev->limits.num_uars,
dev->limits.num_uars - 1,
dev->limits.reserved_uars + 1);
if (ret)
return ret;
ret = mthca_init_db_tab(dev);
if (ret)
mthca_alloc_cleanup(&dev->uar_table.alloc);
return ret;
}
void mthca_cleanup_uar_table(struct mthca_dev *dev)
{
mthca_cleanup_db_tab(dev);
/* XXX check if any UARs are still allocated? */
mthca_alloc_cleanup(&dev->uar_table.alloc);
}