/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright 2015 6WIND S.A.
 * Copyright 2015 Mellanox Technologies, Ltd
 */

#ifndef RTE_PMD_MLX5_DEFS_H_
#define RTE_PMD_MLX5_DEFS_H_

#include <rte_ethdev_driver.h>
#include <rte_vxlan.h>

#include "mlx5_autoconf.h"

/* Reported driver name. */
#define MLX5_DRIVER_NAME "net_mlx5"

/* Maximum number of simultaneous VLAN filters. */
#define MLX5_MAX_VLAN_IDS 128

/*
 * Request TX completion every time descriptors reach this threshold since
 * the previous request. Must be a power of two for performance reasons.
 */
#define MLX5_TX_COMP_THRESH 32u

/*
 * Request TX completion every time the total number of WQEBBs used for inlining
 * packets exceeds the size of WQ divided by this divisor. Better to be power of
 * two for performance.
 */
#define MLX5_TX_COMP_THRESH_INLINE_DIV (1 << 3)

/*
 * Maximal amount of normal completion CQEs
 * processed in one call of tx_burst() routine.
 */
#define MLX5_TX_COMP_MAX_CQE 2u


/* Size of per-queue MR cache array for linear search. */
#define MLX5_MR_CACHE_N 8

/* Size of MR cache table for binary search. */
#define MLX5_MR_BTREE_CACHE_N 256

/*
 * If defined, only use software counters. The PMD will never ask the hardware
 * for these, and many of them won't be available.
 */
#ifndef MLX5_PMD_SOFT_COUNTERS
#define MLX5_PMD_SOFT_COUNTERS 1
#endif

/* Switch port ID parameters for bonding configurations. */
#define MLX5_PORT_ID_BONDING_PF_MASK 0xf
#define MLX5_PORT_ID_BONDING_PF_SHIFT 0xf

/* Alarm timeout. */
#define MLX5_ALARM_TIMEOUT_US 100000

/* Maximum number of extended statistics counters. */
#define MLX5_MAX_XSTATS 32

/* Maximum Packet headers size (L2+L3+L4) for TSO. */
#define MLX5_MAX_TSO_HEADER (128u + 34u)

/* Inline data size required by NICs. */
#define MLX5_INLINE_HSIZE_NONE 0
#define MLX5_INLINE_HSIZE_L2 (sizeof(struct rte_ether_hdr) + \
			      sizeof(struct rte_vlan_hdr))
#define MLX5_INLINE_HSIZE_L3 (MLX5_INLINE_HSIZE_L2 + \
			      sizeof(struct rte_ipv6_hdr))
#define MLX5_INLINE_HSIZE_L4 (MLX5_INLINE_HSIZE_L3 + \
			      sizeof(struct rte_tcp_hdr))
#define MLX5_INLINE_HSIZE_INNER_L2 (MLX5_INLINE_HSIZE_L3 + \
				    sizeof(struct rte_udp_hdr) + \
				    sizeof(struct rte_vxlan_hdr) + \
				    sizeof(struct rte_ether_hdr) + \
				    sizeof(struct rte_vlan_hdr))
#define MLX5_INLINE_HSIZE_INNER_L3 (MLX5_INLINE_HSIZE_INNER_L2 + \
				    sizeof(struct rte_ipv6_hdr))
#define MLX5_INLINE_HSIZE_INNER_L4 (MLX5_INLINE_HSIZE_INNER_L3 + \
				    sizeof(struct rte_tcp_hdr))

/* Threshold of buffer replenishment for vectorized Rx. */
#define MLX5_VPMD_RXQ_RPLNSH_THRESH(n) \
	(RTE_MIN(MLX5_VPMD_RX_MAX_BURST, (unsigned int)(n) >> 2))

/* Maximum size of burst for vectorized Rx. */
#define MLX5_VPMD_RX_MAX_BURST 64U

/* Recommended optimal burst size. */
#define MLX5_RX_DEFAULT_BURST 64U
#define MLX5_TX_DEFAULT_BURST 64U

/* Number of packets vectorized Rx can simultaneously process in a loop. */
#define MLX5_VPMD_DESCS_PER_LOOP      4

/* Mask of RSS on source only or destination only. */
#define MLX5_RSS_SRC_DST_ONLY (ETH_RSS_L3_SRC_ONLY | ETH_RSS_L3_DST_ONLY | \
			       ETH_RSS_L4_SRC_ONLY | ETH_RSS_L4_DST_ONLY)

/* Supported RSS */
#define MLX5_RSS_HF_MASK (~(ETH_RSS_IP | ETH_RSS_UDP | ETH_RSS_TCP | \
			    MLX5_RSS_SRC_DST_ONLY))

/* Timeout in seconds to get a valid link status. */
#define MLX5_LINK_STATUS_TIMEOUT 10

/* Number of times to retry retrieving the physical link information. */
#define MLX5_GET_LINK_STATUS_RETRY_COUNT 3

/* Maximum number of UAR pages used by a port,
 * These are the size and mask for an array of mutexes used to synchronize
 * the access to port's UARs on platforms that do not support 64 bit writes.
 * In such systems it is possible to issue the 64 bits DoorBells through two
 * consecutive writes, each write 32 bits. The access to a UAR page (which can
 * be accessible by all threads in the process) must be synchronized
 * (for example, using a semaphore). Such a synchronization is not required
 * when ringing DoorBells on different UAR pages.
 * A port with 512 Tx queues uses 8, 4kBytes, UAR pages which are shared
 * among the ports.
 */
#define MLX5_UAR_PAGE_NUM_MAX 64
#define MLX5_UAR_PAGE_NUM_MASK ((MLX5_UAR_PAGE_NUM_MAX) - 1)

/* Fields of memory mapping type in offset parameter of mmap() */
#define MLX5_UAR_MMAP_CMD_SHIFT 8
#define MLX5_UAR_MMAP_CMD_MASK 0xff

/* Environment variable to control the doorbell register mapping. */
#define MLX5_SHUT_UP_BF "MLX5_SHUT_UP_BF"
#if defined(RTE_ARCH_ARM64)
#define MLX5_SHUT_UP_BF_DEFAULT "0"
#else
#define MLX5_SHUT_UP_BF_DEFAULT "1"
#endif

#ifndef HAVE_MLX5DV_MMAP_GET_NC_PAGES_CMD
#define MLX5_MMAP_GET_NC_PAGES_CMD 3
#endif

/* Log 2 of the default number of strides per WQE for Multi-Packet RQ. */
#define MLX5_MPRQ_STRIDE_NUM_N 6U

/* Log 2 of the default size of a stride per WQE for Multi-Packet RQ. */
#define MLX5_MPRQ_STRIDE_SIZE_N 11U

/* Two-byte shift is disabled for Multi-Packet RQ. */
#define MLX5_MPRQ_TWO_BYTE_SHIFT 0

/*
 * Minimum size of packet to be memcpy'd instead of being attached as an
 * external buffer.
 */
#define MLX5_MPRQ_MEMCPY_DEFAULT_LEN 128

/* Minimum number Rx queues to enable Multi-Packet RQ. */
#define MLX5_MPRQ_MIN_RXQS 12

/* Cache size of mempool for Multi-Packet RQ. */
#define MLX5_MPRQ_MP_CACHE_SZ 32U

/* MLX5_DV_XMETA_EN supported values. */
#define MLX5_XMETA_MODE_LEGACY 0
#define MLX5_XMETA_MODE_META16 1
#define MLX5_XMETA_MODE_META32 2

/* MLX5_TX_DB_NC supported values. */
#define MLX5_TXDB_CACHED 0
#define MLX5_TXDB_NCACHED 1
#define MLX5_TXDB_HEURISTIC 2

/* Size of the simple hash table for metadata register table. */
#define MLX5_FLOW_MREG_HTABLE_SZ 4096
#define MLX5_FLOW_MREG_HNAME "MARK_COPY_TABLE"
#define MLX5_DEFAULT_COPY_ID UINT32_MAX

/* Hairpin TX/RX queue configuration parameters. */
#define MLX5_HAIRPIN_QUEUE_STRIDE 6
#define MLX5_HAIRPIN_JUMBO_LOG_SIZE (14 + 2)

/* Definition of static_assert found in /usr/include/assert.h */
#ifndef HAVE_STATIC_ASSERT
#define static_assert _Static_assert
#endif

#endif /* RTE_PMD_MLX5_DEFS_H_ */
