1*e6550b3eSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */
25df6d737SAbhijeet Joglekar /*
35df6d737SAbhijeet Joglekar * Copyright 2008 Cisco Systems, Inc. All rights reserved.
45df6d737SAbhijeet Joglekar * Copyright 2007 Nuova Systems, Inc. All rights reserved.
55df6d737SAbhijeet Joglekar */
65df6d737SAbhijeet Joglekar #ifndef _WQ_ENET_DESC_H_
75df6d737SAbhijeet Joglekar #define _WQ_ENET_DESC_H_
85df6d737SAbhijeet Joglekar
95df6d737SAbhijeet Joglekar /* Ethernet work queue descriptor: 16B */
105df6d737SAbhijeet Joglekar struct wq_enet_desc {
115df6d737SAbhijeet Joglekar __le64 address;
125df6d737SAbhijeet Joglekar __le16 length;
135df6d737SAbhijeet Joglekar __le16 mss_loopback;
145df6d737SAbhijeet Joglekar __le16 header_length_flags;
155df6d737SAbhijeet Joglekar __le16 vlan_tag;
165df6d737SAbhijeet Joglekar };
175df6d737SAbhijeet Joglekar
185df6d737SAbhijeet Joglekar #define WQ_ENET_ADDR_BITS 64
195df6d737SAbhijeet Joglekar #define WQ_ENET_LEN_BITS 14
205df6d737SAbhijeet Joglekar #define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1)
215df6d737SAbhijeet Joglekar #define WQ_ENET_MSS_BITS 14
225df6d737SAbhijeet Joglekar #define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1)
235df6d737SAbhijeet Joglekar #define WQ_ENET_MSS_SHIFT 2
245df6d737SAbhijeet Joglekar #define WQ_ENET_LOOPBACK_SHIFT 1
255df6d737SAbhijeet Joglekar #define WQ_ENET_HDRLEN_BITS 10
265df6d737SAbhijeet Joglekar #define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1)
275df6d737SAbhijeet Joglekar #define WQ_ENET_FLAGS_OM_BITS 2
285df6d737SAbhijeet Joglekar #define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1)
295df6d737SAbhijeet Joglekar #define WQ_ENET_FLAGS_EOP_SHIFT 12
305df6d737SAbhijeet Joglekar #define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 13
315df6d737SAbhijeet Joglekar #define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14
325df6d737SAbhijeet Joglekar #define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 15
335df6d737SAbhijeet Joglekar
345df6d737SAbhijeet Joglekar #define WQ_ENET_OFFLOAD_MODE_CSUM 0
355df6d737SAbhijeet Joglekar #define WQ_ENET_OFFLOAD_MODE_RESERVED 1
365df6d737SAbhijeet Joglekar #define WQ_ENET_OFFLOAD_MODE_CSUM_L4 2
375df6d737SAbhijeet Joglekar #define WQ_ENET_OFFLOAD_MODE_TSO 3
385df6d737SAbhijeet Joglekar
wq_enet_desc_enc(struct wq_enet_desc * desc,u64 address,u16 length,u16 mss,u16 header_length,u8 offload_mode,u8 eop,u8 cq_entry,u8 fcoe_encap,u8 vlan_tag_insert,u16 vlan_tag,u8 loopback)395df6d737SAbhijeet Joglekar static inline void wq_enet_desc_enc(struct wq_enet_desc *desc,
405df6d737SAbhijeet Joglekar u64 address, u16 length, u16 mss, u16 header_length,
415df6d737SAbhijeet Joglekar u8 offload_mode, u8 eop, u8 cq_entry, u8 fcoe_encap,
425df6d737SAbhijeet Joglekar u8 vlan_tag_insert, u16 vlan_tag, u8 loopback)
435df6d737SAbhijeet Joglekar {
445df6d737SAbhijeet Joglekar desc->address = cpu_to_le64(address);
455df6d737SAbhijeet Joglekar desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK);
465df6d737SAbhijeet Joglekar desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) <<
475df6d737SAbhijeet Joglekar WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT);
485df6d737SAbhijeet Joglekar desc->header_length_flags = cpu_to_le16(
495df6d737SAbhijeet Joglekar (header_length & WQ_ENET_HDRLEN_MASK) |
505df6d737SAbhijeet Joglekar (offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS |
515df6d737SAbhijeet Joglekar (eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT |
525df6d737SAbhijeet Joglekar (cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT |
535df6d737SAbhijeet Joglekar (fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT |
545df6d737SAbhijeet Joglekar (vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT);
555df6d737SAbhijeet Joglekar desc->vlan_tag = cpu_to_le16(vlan_tag);
565df6d737SAbhijeet Joglekar }
575df6d737SAbhijeet Joglekar
wq_enet_desc_dec(struct wq_enet_desc * desc,u64 * address,u16 * length,u16 * mss,u16 * header_length,u8 * offload_mode,u8 * eop,u8 * cq_entry,u8 * fcoe_encap,u8 * vlan_tag_insert,u16 * vlan_tag,u8 * loopback)585df6d737SAbhijeet Joglekar static inline void wq_enet_desc_dec(struct wq_enet_desc *desc,
595df6d737SAbhijeet Joglekar u64 *address, u16 *length, u16 *mss, u16 *header_length,
605df6d737SAbhijeet Joglekar u8 *offload_mode, u8 *eop, u8 *cq_entry, u8 *fcoe_encap,
615df6d737SAbhijeet Joglekar u8 *vlan_tag_insert, u16 *vlan_tag, u8 *loopback)
625df6d737SAbhijeet Joglekar {
635df6d737SAbhijeet Joglekar *address = le64_to_cpu(desc->address);
645df6d737SAbhijeet Joglekar *length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK;
655df6d737SAbhijeet Joglekar *mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) &
665df6d737SAbhijeet Joglekar WQ_ENET_MSS_MASK;
675df6d737SAbhijeet Joglekar *loopback = (u8)((le16_to_cpu(desc->mss_loopback) >>
685df6d737SAbhijeet Joglekar WQ_ENET_LOOPBACK_SHIFT) & 1);
695df6d737SAbhijeet Joglekar *header_length = le16_to_cpu(desc->header_length_flags) &
705df6d737SAbhijeet Joglekar WQ_ENET_HDRLEN_MASK;
715df6d737SAbhijeet Joglekar *offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >>
725df6d737SAbhijeet Joglekar WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK);
735df6d737SAbhijeet Joglekar *eop = (u8)((le16_to_cpu(desc->header_length_flags) >>
745df6d737SAbhijeet Joglekar WQ_ENET_FLAGS_EOP_SHIFT) & 1);
755df6d737SAbhijeet Joglekar *cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >>
765df6d737SAbhijeet Joglekar WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1);
775df6d737SAbhijeet Joglekar *fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >>
785df6d737SAbhijeet Joglekar WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1);
795df6d737SAbhijeet Joglekar *vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >>
805df6d737SAbhijeet Joglekar WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1);
815df6d737SAbhijeet Joglekar *vlan_tag = le16_to_cpu(desc->vlan_tag);
825df6d737SAbhijeet Joglekar }
835df6d737SAbhijeet Joglekar
845df6d737SAbhijeet Joglekar #endif /* _WQ_ENET_DESC_H_ */
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