[deliverable/linux.git] / drivers / infiniband / hw / mthca / mthca_pd.c

/*
 * Copyright (c) 2004 Topspin Communications.  All rights reserved.
 * Copyright (c) 2005 Cisco Systems.  All rights reserved.
 * Copyright (c) 2005 Mellanox Technologies. 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.
 *
 * $Id: mthca_pd.c 1349 2004-12-16 21:09:43Z roland $
 */

#include <linux/init.h>
#include <linux/errno.h>

#include "mthca_dev.h"

int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd)
{
	int err = 0;

	might_sleep();

	pd->privileged = privileged;

	atomic_set(&pd->sqp_count, 0);
	pd->pd_num = mthca_alloc(&dev->pd_table.alloc);
	if (pd->pd_num == -1)
		return -ENOMEM;

	if (privileged) {
		err = mthca_mr_alloc_notrans(dev, pd->pd_num,
					     MTHCA_MPT_FLAG_LOCAL_READ |
					     MTHCA_MPT_FLAG_LOCAL_WRITE,
					     &pd->ntmr);
		if (err)
			mthca_free(&dev->pd_table.alloc, pd->pd_num);
	}

	return err;
}

void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd)
{
	might_sleep();
	if (pd->privileged)
		mthca_free_mr(dev, &pd->ntmr);
	mthca_free(&dev->pd_table.alloc, pd->pd_num);
}

int __devinit mthca_init_pd_table(struct mthca_dev *dev)
{
	return mthca_alloc_init(&dev->pd_table.alloc,
				dev->limits.num_pds,
				(1 << 24) - 1,
				dev->limits.reserved_pds);
}

void __devexit mthca_cleanup_pd_table(struct mthca_dev *dev)
{
	/* XXX check if any PDs are still allocated? */
	mthca_alloc_cleanup(&dev->pd_table.alloc);
}
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	2	* Copyright (c) 2004 Topspin Communications. All rights reserved.
99264c1e	3	* Copyright (c) 2005 Cisco Systems. All rights reserved.
2a1d9b7f	4	* Copyright (c) 2005 Mellanox Technologies. All rights reserved.
1da177e4 LT	5	*
	6	* This software is available to you under a choice of one of two
	7	* licenses. You may choose to be licensed under the terms of the GNU
	8	* General Public License (GPL) Version 2, available from the file
	9	* COPYING in the main directory of this source tree, or the
	10	* OpenIB.org BSD license below:
	11	*
	12	* Redistribution and use in source and binary forms, with or
	13	* without modification, are permitted provided that the following
	14	* conditions are met:
	15	*
	16	* - Redistributions of source code must retain the above
	17	* copyright notice, this list of conditions and the following
	18	* disclaimer.
	19	*
	20	* - Redistributions in binary form must reproduce the above
	21	* copyright notice, this list of conditions and the following
	22	* disclaimer in the documentation and/or other materials
	23	* provided with the distribution.
	24	*
	25	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	26	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	27	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	28	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	29	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	30	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	31	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	32	* SOFTWARE.
	33	*
	34	* $Id: mthca_pd.c 1349 2004-12-16 21:09:43Z roland $
	35	*/
	36
	37	#include <linux/init.h>
	38	#include <linux/errno.h>
	39
	40	#include "mthca_dev.h"
	41
99264c1e	42	int mthca_pd_alloc(struct mthca_dev dev, int privileged, struct mthca_pd pd)
1da177e4	43	{
99264c1e	44	int err = 0;
1da177e4 LT	45
	46	might_sleep();
	47
99264c1e RD	48	pd->privileged = privileged;
99264c1e RD	49
1da177e4 LT	50	atomic_set(&pd->sqp_count, 0);
	51	pd->pd_num = mthca_alloc(&dev->pd_table.alloc);
	52	if (pd->pd_num == -1)
	53	return -ENOMEM;
	54
99264c1e RD	55	if (privileged) {
	56	err = mthca_mr_alloc_notrans(dev, pd->pd_num,
	57	MTHCA_MPT_FLAG_LOCAL_READ \|
	58	MTHCA_MPT_FLAG_LOCAL_WRITE,
	59	&pd->ntmr);
	60	if (err)
	61	mthca_free(&dev->pd_table.alloc, pd->pd_num);
	62	}
1da177e4 LT	63
	64	return err;
	65	}
	66
	67	void mthca_pd_free(struct mthca_dev dev, struct mthca_pd pd)
	68	{
	69	might_sleep();
99264c1e RD	70	if (pd->privileged)
99264c1e RD	71	mthca_free_mr(dev, &pd->ntmr);
1da177e4 LT	72	mthca_free(&dev->pd_table.alloc, pd->pd_num);
	73	}
	74
	75	int __devinit mthca_init_pd_table(struct mthca_dev *dev)
	76	{
	77	return mthca_alloc_init(&dev->pd_table.alloc,
	78	dev->limits.num_pds,
	79	(1 << 24) - 1,
	80	dev->limits.reserved_pds);
	81	}
	82
	83	void __devexit mthca_cleanup_pd_table(struct mthca_dev *dev)
	84	{
	85	/* XXX check if any PDs are still allocated? */
	86	mthca_alloc_cleanup(&dev->pd_table.alloc);
	87	}