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35 #ifndef _RQ_ENET_DESC_H_
36 #define _RQ_ENET_DESC_H_
38 /* Ethernet receive queue descriptor: 16B */
45 enum rq_enet_type_types {
46 RQ_ENET_TYPE_ONLY_SOP = 0,
47 RQ_ENET_TYPE_NOT_SOP = 1,
48 RQ_ENET_TYPE_RESV2 = 2,
49 RQ_ENET_TYPE_RESV3 = 3,
52 #define RQ_ENET_ADDR_BITS 64
53 #define RQ_ENET_LEN_BITS 14
54 #define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1)
55 #define RQ_ENET_TYPE_BITS 2
56 #define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)
58 static inline void rq_enet_desc_enc(volatile struct rq_enet_desc *desc,
59 u64 address, u8 type, u16 length)
61 desc->address = cpu_to_le64(address);
62 desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) |
63 ((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS));
66 static inline void rq_enet_desc_dec(struct rq_enet_desc *desc,
67 u64 *address, u8 *type, u16 *length)
69 *address = le64_to_cpu(desc->address);
70 *length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK;
71 *type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) &
75 #endif /* _RQ_ENET_DESC_H_ */