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[PATCH] IB uverbs: add mthca user PD support

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Add support for userspace protection domains (PDs) to mthca.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Roland Dreier
2005-07-07 17:57:18 -07:00
committed by Linus Torvalds
parent 53b8b3ffd5
commit 99264c1ee2
5 changed files with 28 additions and 12 deletions
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24
drivers/infiniband/hw/mthca/mthca_pd.c
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@@ -1,5 +1,6 @@
/*
* Copyright (c) 2004 Topspin Communications. All rights reserved.
* Copyright (c) 2005 Cisco Systems. 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
@@ -37,23 +38,27 @@
#include "mthca_dev.h"
int mthca_pd_alloc(struct mthca_dev *dev, struct mthca_pd *pd)
int mthca_pd_alloc(struct mthca_dev *dev, int privileged, struct mthca_pd *pd)
{
int err;
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;
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);
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;
}
@@ -61,7 +66,8 @@ int mthca_pd_alloc(struct mthca_dev *dev, struct mthca_pd *pd)
void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd)
{
might_sleep();
mthca_free_mr(dev, &pd->ntmr);
if (pd->privileged)
mthca_free_mr(dev, &pd->ntmr);
mthca_free(&dev->pd_table.alloc, pd->pd_num);
}