12e99ea80SHyong Youb Kim /* SPDX-License-Identifier: BSD-3-Clause
22e99ea80SHyong Youb Kim * Copyright 2008-2017 Cisco Systems, Inc. All rights reserved.
372f3de30SBruce Richardson * Copyright 2007 Nuova Systems, Inc. All rights reserved.
472f3de30SBruce Richardson */
572f3de30SBruce Richardson
672f3de30SBruce Richardson #ifndef _RQ_ENET_DESC_H_
772f3de30SBruce Richardson #define _RQ_ENET_DESC_H_
872f3de30SBruce Richardson
9846ac76cSJohn Daley #include <rte_byteorder.h>
10846ac76cSJohn Daley
1172f3de30SBruce Richardson /* Ethernet receive queue descriptor: 16B */
1272f3de30SBruce Richardson struct rq_enet_desc {
13*04e8ec74SJohn Daley uint64_t address;
14*04e8ec74SJohn Daley uint16_t length_type;
15*04e8ec74SJohn Daley uint8_t reserved[6];
1672f3de30SBruce Richardson };
1772f3de30SBruce Richardson
1872f3de30SBruce Richardson enum rq_enet_type_types {
1972f3de30SBruce Richardson RQ_ENET_TYPE_ONLY_SOP = 0,
2072f3de30SBruce Richardson RQ_ENET_TYPE_NOT_SOP = 1,
2172f3de30SBruce Richardson RQ_ENET_TYPE_RESV2 = 2,
2272f3de30SBruce Richardson RQ_ENET_TYPE_RESV3 = 3,
2372f3de30SBruce Richardson };
2472f3de30SBruce Richardson
2572f3de30SBruce Richardson #define RQ_ENET_ADDR_BITS 64
2672f3de30SBruce Richardson #define RQ_ENET_LEN_BITS 14
2772f3de30SBruce Richardson #define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1)
2872f3de30SBruce Richardson #define RQ_ENET_TYPE_BITS 2
2972f3de30SBruce Richardson #define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)
3072f3de30SBruce Richardson
rq_enet_desc_enc(volatile struct rq_enet_desc * desc,uint64_t address,uint8_t type,uint16_t length)31856d7ba7SNelson Escobar static inline void rq_enet_desc_enc(volatile struct rq_enet_desc *desc,
32*04e8ec74SJohn Daley uint64_t address, uint8_t type, uint16_t length)
3372f3de30SBruce Richardson {
34846ac76cSJohn Daley desc->address = rte_cpu_to_le_64(address);
35846ac76cSJohn Daley desc->length_type = rte_cpu_to_le_16((length & RQ_ENET_LEN_MASK) |
3672f3de30SBruce Richardson ((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS));
3772f3de30SBruce Richardson }
3872f3de30SBruce Richardson
rq_enet_desc_dec(struct rq_enet_desc * desc,uint64_t * address,uint8_t * type,uint16_t * length)3972f3de30SBruce Richardson static inline void rq_enet_desc_dec(struct rq_enet_desc *desc,
40*04e8ec74SJohn Daley uint64_t *address, uint8_t *type, uint16_t *length)
4172f3de30SBruce Richardson {
42846ac76cSJohn Daley *address = rte_le_to_cpu_64(desc->address);
43846ac76cSJohn Daley *length = rte_le_to_cpu_16(desc->length_type) & RQ_ENET_LEN_MASK;
44*04e8ec74SJohn Daley *type = (uint8_t)((rte_le_to_cpu_16(desc->length_type) >>
45*04e8ec74SJohn Daley RQ_ENET_LEN_BITS) & RQ_ENET_TYPE_MASK);
4672f3de30SBruce Richardson }
4772f3de30SBruce Richardson
4872f3de30SBruce Richardson #endif /* _RQ_ENET_DESC_H_ */
49