1 files changed, 122 insertions, 0 deletions
diff --git a/src/spdk/dpdk/drivers/net/ark/ark_ddm.c b/src/spdk/dpdk/drivers/net/ark/ark_ddm.c
new file mode 100644
index 00000000..eea388a1
--- /dev/null
+++ b/src/spdk/dpdk/drivers/net/ark/ark_ddm.c
@@ -0,0 +1,122 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2015-2018 Atomic Rules LLC
+ */
+
+#include <unistd.h>
+
+#include "ark_logs.h"
+#include "ark_ddm.h"
+
+/* ************************************************************************* */
+int
+ark_ddm_verify(struct ark_ddm_t *ddm)
+{
+	if (sizeof(struct ark_ddm_t) != ARK_DDM_EXPECTED_SIZE) {
+		PMD_DRV_LOG(ERR, "ARK: DDM structure looks incorrect %d vs %zd\n",
+			    ARK_DDM_EXPECTED_SIZE, sizeof(struct ark_ddm_t));
+		return -1;
+	}
+
+	if (ddm->cfg.const0 != ARK_DDM_CONST) {
+		PMD_DRV_LOG(ERR, "ARK: DDM module not found as expected 0x%08x\n",
+			    ddm->cfg.const0);
+		return -1;
+	}
+	return 0;
+}
+
+void
+ark_ddm_start(struct ark_ddm_t *ddm)
+{
+	ddm->cfg.command = 1;
+}
+
+int
+ark_ddm_stop(struct ark_ddm_t *ddm, const int wait)
+{
+	int cnt = 0;
+
+	ddm->cfg.command = 2;
+	while (wait && (ddm->cfg.stop_flushed & 0x01) == 0) {
+		if (cnt++ > 1000)
+			return 1;
+
+		usleep(10);
+	}
+	return 0;
+}
+
+void
+ark_ddm_reset(struct ark_ddm_t *ddm)
+{
+	int status;
+
+	/* reset only works if ddm has stopped properly. */
+	status = ark_ddm_stop(ddm, 1);
+
+	if (status != 0) {
+		PMD_DEBUG_LOG(INFO, "%s  stop failed  doing forced reset\n",
+			      __func__);
+		ddm->cfg.command = 4;
+		usleep(10);
+	}
+	ddm->cfg.command = 3;
+}
+
+void
+ark_ddm_setup(struct ark_ddm_t *ddm, rte_iova_t cons_addr, uint32_t interval)
+{
+	ddm->setup.cons_write_index_addr = cons_addr;
+	ddm->setup.write_index_interval = interval / 4;	/* 4 ns period */
+}
+
+void
+ark_ddm_stats_reset(struct ark_ddm_t *ddm)
+{
+	ddm->cfg.tlp_stats_clear = 1;
+}
+
+void
+ark_ddm_dump(struct ark_ddm_t *ddm, const char *msg)
+{
+	PMD_FUNC_LOG(DEBUG, "%s Stopped: %d\n", msg,
+		     ark_ddm_is_stopped(ddm)
+		     );
+}
+
+void
+ark_ddm_dump_stats(struct ark_ddm_t *ddm, const char *msg)
+{
+	struct ark_ddm_stats_t *stats = &ddm->stats;
+
+	PMD_STATS_LOG(INFO, "DDM Stats: %s"
+		      ARK_SU64 ARK_SU64 ARK_SU64
+		      "\n", msg,
+		      "Bytes:", stats->tx_byte_count,
+		      "Packets:", stats->tx_pkt_count,
+		      "MBufs", stats->tx_mbuf_count);
+}
+
+int
+ark_ddm_is_stopped(struct ark_ddm_t *ddm)
+{
+	return (ddm->cfg.stop_flushed & 0x01) != 0;
+}
+
+uint64_t
+ark_ddm_queue_byte_count(struct ark_ddm_t *ddm)
+{
+	return ddm->queue_stats.byte_count;
+}
+
+uint64_t
+ark_ddm_queue_pkt_count(struct ark_ddm_t *ddm)
+{
+	return ddm->queue_stats.pkt_count;
+}
+
+void
+ark_ddm_queue_reset_stats(struct ark_ddm_t *ddm)
+{
+	ddm->queue_stats.byte_count = 1;
+}