Imported Upstream version 17.05

Change-Id: Id1e419c5a214e4a18739663b91f0f9a549f1fdc6
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

1 files changed, 129 insertions, 0 deletions

diff --git a/drivers/net/sfc/sfc_ev.h b/drivers/net/sfc/sfc_ev.h
new file mode 100644
index 00000000..065defe0
--- /dev/null
+++ b/drivers/net/sfc/sfc_ev.h
@@ -0,0 +1,129 @@
+/*-
+ *   BSD LICENSE
+ *
+ * Copyright (c) 2016-2017 Solarflare Communications Inc.
+ * All rights reserved.
+ *
+ * This software was jointly developed between OKTET Labs (under contract
+ * for Solarflare) and Solarflare Communications, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * 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.
+ */
+
+#ifndef _SFC_EV_H_
+#define _SFC_EV_H_
+
+#include <rte_ethdev.h>
+
+#include "efx.h"
+
+#include "sfc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Number of entries in the management event queue */
+#define SFC_MGMT_EVQ_ENTRIES	(EFX_EVQ_MINNEVS)
+
+struct sfc_adapter;
+struct sfc_dp_rxq;
+struct sfc_dp_txq;
+
+enum sfc_evq_state {
+	SFC_EVQ_UNINITIALIZED = 0,
+	SFC_EVQ_INITIALIZED,
+	SFC_EVQ_STARTING,
+	SFC_EVQ_STARTED,
+
+	SFC_EVQ_NSTATES
+};
+
+enum sfc_evq_type {
+	SFC_EVQ_TYPE_MGMT = 0,
+	SFC_EVQ_TYPE_RX,
+	SFC_EVQ_TYPE_TX,
+
+	SFC_EVQ_NTYPES
+};
+
+struct sfc_evq {
+	/* Used on datapath */
+	efx_evq_t			*common;
+	const efx_ev_callbacks_t	*callbacks;
+	unsigned int			read_ptr;
+	boolean_t			exception;
+	efsys_mem_t			mem;
+	struct sfc_dp_rxq		*dp_rxq;
+	struct sfc_dp_txq		*dp_txq;
+
+	/* Not used on datapath */
+	struct sfc_adapter		*sa;
+	unsigned int			evq_index;
+	enum sfc_evq_state		init_state;
+	enum sfc_evq_type		type;
+	unsigned int			entries;
+};
+
+/*
+ * Functions below define event queue to transmit/receive queue and vice
+ * versa mapping.
+ * Own event queue is allocated for management, each Rx and each Tx queue.
+ * Zero event queue is used for management events.
+ * Rx event queues from 1 to RxQ number follow management event queue.
+ * Tx event queues follow Rx event queues.
+ */
+
+static inline unsigned int
+sfc_evq_index_by_rxq_sw_index(__rte_unused struct sfc_adapter *sa,
+			      unsigned int rxq_sw_index)
+{
+	return 1 + rxq_sw_index;
+}
+
+static inline unsigned int
+sfc_evq_index_by_txq_sw_index(struct sfc_adapter *sa, unsigned int txq_sw_index)
+{
+	return 1 + sa->eth_dev->data->nb_rx_queues + txq_sw_index;
+}
+
+int sfc_ev_attach(struct sfc_adapter *sa);
+void sfc_ev_detach(struct sfc_adapter *sa);
+int sfc_ev_start(struct sfc_adapter *sa);
+void sfc_ev_stop(struct sfc_adapter *sa);
+
+int sfc_ev_qinit(struct sfc_adapter *sa,
+		 enum sfc_evq_type type, unsigned int type_index,
+		 unsigned int entries, int socket_id, struct sfc_evq **evqp);
+void sfc_ev_qfini(struct sfc_evq *evq);
+int sfc_ev_qstart(struct sfc_evq *evq, unsigned int hw_index);
+void sfc_ev_qstop(struct sfc_evq *evq);
+
+int sfc_ev_qprime(struct sfc_evq *evq);
+void sfc_ev_qpoll(struct sfc_evq *evq);
+
+void sfc_ev_mgmt_qpoll(struct sfc_adapter *sa);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _SFC_EV_H_ */