[PATCH rdma-next 1/6] RDMA/mana_ib: create EQs for RNIC CQs

Konstantin Taranov
2024-04-18T16:52:11Z

From: Konstantin Taranov <kotaranov@microsoft.com>

Create EQs within mana_ib device. Such EQs are required
for creation of RNIC CQs.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
---
drivers/infiniband/hw/mana/main.c | 34 ++++++++++++++++++++++++++--
drivers/infiniband/hw/mana/mana_ib.h | 1 +
2 files changed, 33 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index f540147..546d059 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -658,7 +658,7 @@ int mana_ib_create_eqs(struct mana_ib_dev *mdev)
{
struct gdma_context *gc = mdev_to_gc(mdev);
struct gdma_queue_spec spec = {};
- int err;
+ int err, i;

spec.type = GDMA_EQ;
spec.monitor_avl_buf = false;
@@ -672,12 +672,42 @@ int mana_ib_create_eqs(struct mana_ib_dev *mdev)
if (err)
return err;

+ mdev->eqs = kcalloc(mdev->ib_dev.num_comp_vectors, sizeof(struct gdma_queue *),
+ GFP_KERNEL);
+ if (!mdev->eqs) {
+ err = -ENOMEM;
+ goto destroy_fatal_eq;
+ }
+
+ for (i = 0; i < mdev->ib_dev.num_comp_vectors; i++) {
+ spec.eq.msix_index = (i + 1) % gc->num_msix_usable;
+ err = mana_gd_create_mana_eq(mdev->gdma_dev, &spec, &mdev->eqs[i]);
+ if (err)
+ goto destroy_eqs;
+ }
+
return 0;
+
+destroy_eqs:
+ while (i-- > 0)
+ mana_gd_destroy_queue(gc, mdev->eqs[i]);
+ kfree(mdev->eqs);
+destroy_fatal_eq:
+ mana_gd_destroy_queue(gc, mdev->fatal_err_eq);
+ return err;
}

void mana_ib_destroy_eqs(struct mana_ib_dev *mdev)
{
- mana_gd_destroy_queue(mdev_to_gc(mdev), mdev->fatal_err_eq);
+ struct gdma_context *gc = mdev_to_gc(mdev);
+ int i;
+
+ mana_gd_destroy_queue(gc, mdev->fatal_err_eq);
+
+ for (i = 0; i < mdev->ib_dev.num_comp_vectors; i++)
+ mana_gd_destroy_queue(gc, mdev->eqs[i]);
+
+ kfree(mdev->eqs);
}

int mana_ib_gd_create_rnic_adapter(struct mana_ib_dev *mdev)
diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index 4c1240d..bfcf6df 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -56,6 +56,7 @@ struct mana_ib_dev {
struct gdma_dev *gdma_dev;
mana_handle_t adapter_handle;
struct gdma_queue *fatal_err_eq;
+ struct gdma_queue **eqs;
struct mana_ib_adapter_caps adapter_caps;
};

--
2.43.0