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20#ifndef _RQ_ENET_DESC_H_
21#define _RQ_ENET_DESC_H_
22
23
24struct rq_enet_desc {
25 __le64 address;
26 __le16 length_type;
27 u8 reserved[6];
28};
29
30enum rq_enet_type_types {
31 RQ_ENET_TYPE_ONLY_SOP = 0,
32 RQ_ENET_TYPE_NOT_SOP = 1,
33 RQ_ENET_TYPE_RESV2 = 2,
34 RQ_ENET_TYPE_RESV3 = 3,
35};
36
37#define RQ_ENET_ADDR_BITS 64
38#define RQ_ENET_LEN_BITS 14
39#define RQ_ENET_LEN_MASK ((1 << RQ_ENET_LEN_BITS) - 1)
40#define RQ_ENET_TYPE_BITS 2
41#define RQ_ENET_TYPE_MASK ((1 << RQ_ENET_TYPE_BITS) - 1)
42
43static inline void rq_enet_desc_enc(struct rq_enet_desc *desc,
44 u64 address, u8 type, u16 length)
45{
46 desc->address = cpu_to_le64(address);
47 desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) |
48 ((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS));
49}
50
51static inline void rq_enet_desc_dec(struct rq_enet_desc *desc,
52 u64 *address, u8 *type, u16 *length)
53{
54 *address = le64_to_cpu(desc->address);
55 *length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK;
56 *type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) &
57 RQ_ENET_TYPE_MASK);
58}
59
60#endif
61