[PATCH] IB uverbs: add mthca user PD support
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>
diff --git a/drivers/infiniband/hw/mthca/mthca_pd.c b/drivers/infiniband/hw/mthca/mthca_pd.c
index ea66847..c2c8998 100644
--- a/drivers/infiniband/hw/mthca/mthca_pd.c
+++ b/drivers/infiniband/hw/mthca/mthca_pd.c
@@ -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 @@
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);
}