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Diffstat (limited to 'drivers/infiniband/hw/hfi1/exp_rcv.c')
-rw-r--r--drivers/infiniband/hw/hfi1/exp_rcv.c78
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);
+}