New upstream version 18.08upstream/18.08

Change-Id: I32fdf5e5016556d9c0a6d88ddaf1fc468961790a
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

1 files changed, 186 insertions, 0 deletions

diff --git a/drivers/net/axgbe/axgbe_rxtx.h b/drivers/net/axgbe/axgbe_rxtx.h
new file mode 100644
index 00000000..917da58c
--- /dev/null
+++ b/drivers/net/axgbe/axgbe_rxtx.h
@@ -0,0 +1,186 @@
+/*   SPDX-License-Identifier: BSD-3-Clause
+ *   Copyright(c) 2018 Advanced Micro Devices, Inc. All rights reserved.
+ *   Copyright(c) 2018 Synopsys, Inc. All rights reserved.
+ */
+
+#ifndef _AXGBE_RXTX_H_
+#define _AXGBE_RXTX_H_
+
+/* to suppress gcc warnings related to descriptor casting*/
+#ifdef RTE_TOOLCHAIN_GCC
+#pragma GCC diagnostic ignored "-Wcast-qual"
+#endif
+
+#ifdef RTE_TOOLCHAIN_CLANG
+#pragma GCC diagnostic ignored "-Wcast-qual"
+#endif
+
+/* Descriptor related defines */
+#define AXGBE_MAX_RING_DESC		4096 /*should be power of 2*/
+#define AXGBE_TX_DESC_MIN_FREE		(AXGBE_MAX_RING_DESC >> 3)
+#define AXGBE_TX_DESC_MAX_PROC		(AXGBE_MAX_RING_DESC >> 1)
+#define AXGBE_MIN_RING_DESC		32
+#define RTE_AXGBE_DESCS_PER_LOOP	4
+#define RTE_AXGBE_MAX_RX_BURST		32
+
+#define AXGBE_RX_FREE_THRESH		32
+#define AXGBE_TX_FREE_THRESH		32
+
+#define AXGBE_DESC_ALIGN		128
+#define AXGBE_DESC_OWN			0x80000000
+#define AXGBE_ERR_STATUS		0x000f0000
+#define AXGBE_L3_CSUM_ERR		0x00050000
+#define AXGBE_L4_CSUM_ERR		0x00060000
+
+#include "axgbe_common.h"
+
+#define AXGBE_GET_DESC_PT(_queue, _idx)			\
+	(((_queue)->desc) +				\
+	((_idx) & ((_queue)->nb_desc - 1)))
+
+#define AXGBE_GET_DESC_IDX(_queue, _idx)			\
+	((_idx) & ((_queue)->nb_desc - 1))			\
+
+/* Rx desc format */
+union axgbe_rx_desc {
+	struct {
+		uint64_t baddr;
+		uint32_t desc2;
+		uint32_t desc3;
+	} read;
+	struct {
+		uint32_t desc0;
+		uint32_t desc1;
+		uint32_t desc2;
+		uint32_t desc3;
+	} write;
+};
+
+struct axgbe_rx_queue {
+	/* membuf pool for rx buffers */
+	struct rte_mempool *mb_pool;
+	/* H/w Rx buffer size configured in DMA */
+	unsigned int buf_size;
+	/* CRC h/w offload */
+	uint16_t crc_len;
+	/* address of  s/w rx buffers */
+	struct rte_mbuf **sw_ring;
+	/* Port private data */
+	struct axgbe_port *pdata;
+	/* Number of Rx descriptors in queue */
+	uint16_t nb_desc;
+	/* max free RX desc to hold */
+	uint16_t free_thresh;
+	/* Index of descriptor to check for packet availability */
+	uint64_t cur;
+	/* Index of descriptor to check for buffer reallocation */
+	uint64_t dirty;
+	/* Software Rx descriptor ring*/
+	volatile union axgbe_rx_desc *desc;
+	/* Ring physical address */
+	uint64_t ring_phys_addr;
+	/* Dma Channel register address */
+	void *dma_regs;
+	/* Dma channel tail register address*/
+	volatile uint32_t *dma_tail_reg;
+	/* DPDK queue index */
+	uint16_t queue_id;
+	/* dpdk port id*/
+	uint16_t port_id;
+	/* queue stats */
+	uint64_t pkts;
+	uint64_t bytes;
+	uint64_t errors;
+	/* Number of mbufs allocated from pool*/
+	uint64_t mbuf_alloc;
+
+} __rte_cache_aligned;
+
+/*Tx descriptor format */
+struct axgbe_tx_desc {
+	phys_addr_t baddr;
+	uint32_t desc2;
+	uint32_t desc3;
+};
+
+struct axgbe_tx_queue {
+	/* Port private data reference */
+	struct axgbe_port *pdata;
+	/* Number of Tx descriptors in queue*/
+	uint16_t nb_desc;
+	/* Start freeing TX buffers if there are less free descriptors than
+	 * this value
+	 */
+	uint16_t free_thresh;
+	/* Available descriptors for Tx processing*/
+	uint16_t nb_desc_free;
+	/* Batch of mbufs/descs to release */
+	uint16_t free_batch_cnt;
+	/* Flag for vector support */
+	uint16_t vector_disable;
+	/* Index of descriptor to be used for current transfer */
+	uint64_t cur;
+	/* Index of descriptor to check for transfer complete */
+	uint64_t dirty;
+	/* Virtual address of ring */
+	volatile struct axgbe_tx_desc *desc;
+	/* Physical address of ring */
+	uint64_t ring_phys_addr;
+	/* Dma channel register space */
+	void  *dma_regs;
+	/* Dma tail register address of ring*/
+	volatile uint32_t *dma_tail_reg;
+	/* Tx queue index/id*/
+	uint16_t queue_id;
+	/* Reference to hold Tx mbufs mapped to Tx descriptors freed
+	 * after transmission confirmation
+	 */
+	struct rte_mbuf **sw_ring;
+	/* dpdk port id*/
+	uint16_t port_id;
+	/* queue stats */
+	uint64_t pkts;
+	uint64_t bytes;
+	uint64_t errors;
+
+} __rte_cache_aligned;
+
+/*Queue related APIs */
+
+/*
+ * RX/TX function prototypes
+ */
+
+
+void axgbe_dev_tx_queue_release(void *txq);
+int  axgbe_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id,
+			      uint16_t nb_tx_desc, unsigned int socket_id,
+			      const struct rte_eth_txconf *tx_conf);
+void axgbe_dev_enable_tx(struct rte_eth_dev *dev);
+void axgbe_dev_disable_tx(struct rte_eth_dev *dev);
+int axgbe_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id);
+int axgbe_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id);
+
+uint16_t axgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
+			 uint16_t nb_pkts);
+uint16_t axgbe_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
+			 uint16_t nb_pkts);
+
+
+void axgbe_dev_rx_queue_release(void *rxq);
+int  axgbe_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id,
+			      uint16_t nb_rx_desc, unsigned int socket_id,
+			      const struct rte_eth_rxconf *rx_conf,
+			      struct rte_mempool *mb_pool);
+void axgbe_dev_enable_rx(struct rte_eth_dev *dev);
+void axgbe_dev_disable_rx(struct rte_eth_dev *dev);
+int axgbe_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id);
+int axgbe_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id);
+uint16_t axgbe_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
+			 uint16_t nb_pkts);
+uint16_t axgbe_recv_pkts_threshold_refresh(void *rx_queue,
+					   struct rte_mbuf **rx_pkts,
+					   uint16_t nb_pkts);
+void axgbe_dev_clear_queues(struct rte_eth_dev *dev);
+
+#endif /* _AXGBE_RXTX_H_ */