1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
 4 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 5 */
 6
 7#ifndef _RQ_ENET_DESC_H_
 8#define _RQ_ENET_DESC_H_
 9
10/* Ethernet receive queue descriptor: 16B */
11struct rq_enet_desc {
12	__le64 address;
13	__le16 length_type;
14	u8 reserved[6];
15};
16
17enum rq_enet_type_types {
18	RQ_ENET_TYPE_ONLY_SOP = 0,
19	RQ_ENET_TYPE_NOT_SOP = 1,
20	RQ_ENET_TYPE_RESV2 = 2,
21	RQ_ENET_TYPE_RESV3 = 3,
22};
23
24#define RQ_ENET_ADDR_BITS		64
25#define RQ_ENET_LEN_BITS		14
26#define RQ_ENET_LEN_MASK		((1 << RQ_ENET_LEN_BITS) - 1)
27#define RQ_ENET_TYPE_BITS		2
28#define RQ_ENET_TYPE_MASK		((1 << RQ_ENET_TYPE_BITS) - 1)
29
30static inline void rq_enet_desc_enc(struct rq_enet_desc *desc,
31	u64 address, u8 type, u16 length)
32{
33	desc->address = cpu_to_le64(address);
34	desc->length_type = cpu_to_le16((length & RQ_ENET_LEN_MASK) |
35		((type & RQ_ENET_TYPE_MASK) << RQ_ENET_LEN_BITS));
36}
37
38static inline void rq_enet_desc_dec(struct rq_enet_desc *desc,
39	u64 *address, u8 *type, u16 *length)
40{
41	*address = le64_to_cpu(desc->address);
42	*length = le16_to_cpu(desc->length_type) & RQ_ENET_LEN_MASK;
43	*type = (u8)((le16_to_cpu(desc->length_type) >> RQ_ENET_LEN_BITS) &
44		RQ_ENET_TYPE_MASK);
45}
46
47#endif /* _RQ_ENET_DESC_H_ */

 
 1/*
 2 * Copyright 2008-2010 Cisco Systems, Inc.  All rights reserved.
 3 * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
 4 *
 5 * This program is free software; you may redistribute it and/or modify
 6 * it under the terms of the GNU General Public License as published by
 7 * the Free Software Foundation; version 2 of the License.
 8 *
 9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
16 * SOFTWARE.
17 *
18 */
19
20#ifndef _RQ_ENET_DESC_H_
21#define _RQ_ENET_DESC_H_
22
23/* Ethernet receive queue descriptor: 16B */
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 /* _RQ_ENET_DESC_H_ */