Imported Upstream version 17.05

[deb_dpdk.git] / drivers / net / ark / ark_ddm.c

diff --git a/drivers/net/ark/ark_ddm.c b/drivers/net/ark/ark_ddm.c
new file mode 100644 (file)
index 0000000..221460c
--- /dev/null
+++ b/drivers/net/ark/ark_ddm.c
@@ -0,0 +1,151 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Atomic Rules LLC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#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, phys_addr_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;
+}