1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/exp_rcv.c b/drivers/infiniband/hw/hfi1/exp_rcv.c
new file mode 100644
index 0000000000..b86f697c79
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/exp_rcv.c
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause
+/*
+ * Copyright(c) 2017 Intel Corporation.
+ */
+
+#include "exp_rcv.h"
+#include "trace.h"
+
+/**
+ * hfi1_exp_tid_set_init - initialize exp_tid_set
+ * @set: the set
+ */
+static void hfi1_exp_tid_set_init(struct exp_tid_set *set)
+{
+	INIT_LIST_HEAD(&set->list);
+	set->count = 0;
+}
+
+/**
+ * hfi1_exp_tid_group_init - initialize rcd expected receive
+ * @rcd: the rcd
+ */
+void hfi1_exp_tid_group_init(struct hfi1_ctxtdata *rcd)
+{
+	hfi1_exp_tid_set_init(&rcd->tid_group_list);
+	hfi1_exp_tid_set_init(&rcd->tid_used_list);
+	hfi1_exp_tid_set_init(&rcd->tid_full_list);
+}
+
+/**
+ * hfi1_alloc_ctxt_rcv_groups - initialize expected receive groups
+ * @rcd: the context to add the groupings to
+ */
+int hfi1_alloc_ctxt_rcv_groups(struct hfi1_ctxtdata *rcd)
+{
+	struct hfi1_devdata *dd = rcd->dd;
+	u32 tidbase;
+	struct tid_group *grp;
+	int i;
+	u32 ngroups;
+
+	ngroups = rcd->expected_count / dd->rcv_entries.group_size;
+	rcd->groups =
+		kcalloc_node(ngroups, sizeof(*rcd->groups),
+			     GFP_KERNEL, rcd->numa_id);
+	if (!rcd->groups)
+		return -ENOMEM;
+	tidbase = rcd->expected_base;
+	for (i = 0; i < ngroups; i++) {
+		grp = &rcd->groups[i];
+		grp->size = dd->rcv_entries.group_size;
+		grp->base = tidbase;
+		tid_group_add_tail(grp, &rcd->tid_group_list);
+		tidbase += dd->rcv_entries.group_size;
+	}
+
+	return 0;
+}
+
+/**
+ * hfi1_free_ctxt_rcv_groups - free  expected receive groups
+ * @rcd: the context to free
+ *
+ * The routine dismantles the expect receive linked
+ * list and clears any tids associated with the receive
+ * context.
+ *
+ * This should only be called for kernel contexts and the
+ * a base user context.
+ */
+void hfi1_free_ctxt_rcv_groups(struct hfi1_ctxtdata *rcd)
+{
+	kfree(rcd->groups);
+	rcd->groups = NULL;
+	hfi1_exp_tid_group_init(rcd);
+
+	hfi1_clear_tids(rcd);
+}