Add support for userspace protection domains (PDs) to mthca.
Signed-off-by: Roland Dreier <[email protected]>
---
drivers/infiniband/hw/mthca/mthca_dev.h | 3 ++-
drivers/infiniband/hw/mthca/mthca_main.c | 2 +-
drivers/infiniband/hw/mthca/mthca_pd.c | 24 +++++++++++++++---------
drivers/infiniband/hw/mthca/mthca_provider.c | 10 +++++++++-
drivers/infiniband/hw/mthca/mthca_provider.h | 1 +
5 files changed, 28 insertions(+), 12 deletions(-)
--- linux.orig/drivers/infiniband/hw/mthca/mthca_dev.h 2005-06-28 15:19:20.685397179 -0700
+++ linux/drivers/infiniband/hw/mthca/mthca_dev.h 2005-06-28 15:20:20.514467380 -0700
@@ -1,6 +1,7 @@
/*
* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
* Copyright (c) 2005 Sun Microsystems, Inc. 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
@@ -378,7 +379,7 @@ void mthca_unregister_device(struct mthc
int mthca_uar_alloc(struct mthca_dev *dev, struct mthca_uar *uar);
void mthca_uar_free(struct mthca_dev *dev, struct mthca_uar *uar);
-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);
void mthca_pd_free(struct mthca_dev *dev, struct mthca_pd *pd);
struct mthca_mtt *mthca_alloc_mtt(struct mthca_dev *dev, int size);
--- linux.orig/drivers/infiniband/hw/mthca/mthca_main.c 2005-06-28 15:19:20.685397179 -0700
+++ linux/drivers/infiniband/hw/mthca/mthca_main.c 2005-06-28 15:20:20.515467163 -0700
@@ -665,7 +665,7 @@ static int __devinit mthca_setup_hca(str
goto err_pd_table_free;
}
- err = mthca_pd_alloc(dev, &dev->driver_pd);
+ err = mthca_pd_alloc(dev, 1, &dev->driver_pd);
if (err) {
mthca_err(dev, "Failed to create driver PD, "
"aborting.\n");
--- linux.orig/drivers/infiniband/hw/mthca/mthca_pd.c 2005-06-28 15:19:20.684397395 -0700
+++ linux/drivers/infiniband/hw/mthca/mthca_pd.c 2005-06-28 15:20:20.513467597 -0700
@@ -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
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);
}
--- linux.orig/drivers/infiniband/hw/mthca/mthca_provider.c 2005-06-28 15:20:18.380930082 -0700
+++ linux/drivers/infiniband/hw/mthca/mthca_provider.c 2005-06-28 15:20:20.513467597 -0700
@@ -368,12 +368,20 @@ static struct ib_pd *mthca_alloc_pd(stru
if (!pd)
return ERR_PTR(-ENOMEM);
- err = mthca_pd_alloc(to_mdev(ibdev), pd);
+ err = mthca_pd_alloc(to_mdev(ibdev), !context, pd);
if (err) {
kfree(pd);
return ERR_PTR(err);
}
+ if (context) {
+ if (ib_copy_to_udata(udata, &pd->pd_num, sizeof (__u32))) {
+ mthca_pd_free(to_mdev(ibdev), pd);
+ kfree(pd);
+ return ERR_PTR(-EFAULT);
+ }
+ }
+
return &pd->ibpd;
}
--- linux.orig/drivers/infiniband/hw/mthca/mthca_provider.h 2005-06-28 15:20:16.612313643 -0700
+++ linux/drivers/infiniband/hw/mthca/mthca_provider.h 2005-06-28 15:20:20.514467380 -0700
@@ -92,6 +92,7 @@ struct mthca_pd {
u32 pd_num;
atomic_t sqp_count;
struct mthca_mr ntmr;
+ int privileged;
};
struct mthca_eq {
-
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