99 lines
3.8 KiB
C
99 lines
3.8 KiB
C
/*
|
|
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
|
|
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
|
|
*
|
|
* This program is free software; you may redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; version 2 of the License.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#ifndef _WQ_ENET_DESC_H_
|
|
#define _WQ_ENET_DESC_H_
|
|
|
|
/* Ethernet work queue descriptor: 16B */
|
|
struct wq_enet_desc {
|
|
__le64 address;
|
|
__le16 length;
|
|
__le16 mss_loopback;
|
|
__le16 header_length_flags;
|
|
__le16 vlan_tag;
|
|
};
|
|
|
|
#define WQ_ENET_ADDR_BITS 64
|
|
#define WQ_ENET_LEN_BITS 14
|
|
#define WQ_ENET_LEN_MASK ((1 << WQ_ENET_LEN_BITS) - 1)
|
|
#define WQ_ENET_MSS_BITS 14
|
|
#define WQ_ENET_MSS_MASK ((1 << WQ_ENET_MSS_BITS) - 1)
|
|
#define WQ_ENET_MSS_SHIFT 2
|
|
#define WQ_ENET_LOOPBACK_SHIFT 1
|
|
#define WQ_ENET_HDRLEN_BITS 10
|
|
#define WQ_ENET_HDRLEN_MASK ((1 << WQ_ENET_HDRLEN_BITS) - 1)
|
|
#define WQ_ENET_FLAGS_OM_BITS 2
|
|
#define WQ_ENET_FLAGS_OM_MASK ((1 << WQ_ENET_FLAGS_OM_BITS) - 1)
|
|
#define WQ_ENET_FLAGS_EOP_SHIFT 12
|
|
#define WQ_ENET_FLAGS_CQ_ENTRY_SHIFT 13
|
|
#define WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT 14
|
|
#define WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT 15
|
|
|
|
#define WQ_ENET_OFFLOAD_MODE_CSUM 0
|
|
#define WQ_ENET_OFFLOAD_MODE_RESERVED 1
|
|
#define WQ_ENET_OFFLOAD_MODE_CSUM_L4 2
|
|
#define WQ_ENET_OFFLOAD_MODE_TSO 3
|
|
|
|
static inline void 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)
|
|
{
|
|
desc->address = cpu_to_le64(address);
|
|
desc->length = cpu_to_le16(length & WQ_ENET_LEN_MASK);
|
|
desc->mss_loopback = cpu_to_le16((mss & WQ_ENET_MSS_MASK) <<
|
|
WQ_ENET_MSS_SHIFT | (loopback & 1) << WQ_ENET_LOOPBACK_SHIFT);
|
|
desc->header_length_flags = cpu_to_le16(
|
|
(header_length & WQ_ENET_HDRLEN_MASK) |
|
|
(offload_mode & WQ_ENET_FLAGS_OM_MASK) << WQ_ENET_HDRLEN_BITS |
|
|
(eop & 1) << WQ_ENET_FLAGS_EOP_SHIFT |
|
|
(cq_entry & 1) << WQ_ENET_FLAGS_CQ_ENTRY_SHIFT |
|
|
(fcoe_encap & 1) << WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT |
|
|
(vlan_tag_insert & 1) << WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT);
|
|
desc->vlan_tag = cpu_to_le16(vlan_tag);
|
|
}
|
|
|
|
static inline void 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)
|
|
{
|
|
*address = le64_to_cpu(desc->address);
|
|
*length = le16_to_cpu(desc->length) & WQ_ENET_LEN_MASK;
|
|
*mss = (le16_to_cpu(desc->mss_loopback) >> WQ_ENET_MSS_SHIFT) &
|
|
WQ_ENET_MSS_MASK;
|
|
*loopback = (u8)((le16_to_cpu(desc->mss_loopback) >>
|
|
WQ_ENET_LOOPBACK_SHIFT) & 1);
|
|
*header_length = le16_to_cpu(desc->header_length_flags) &
|
|
WQ_ENET_HDRLEN_MASK;
|
|
*offload_mode = (u8)((le16_to_cpu(desc->header_length_flags) >>
|
|
WQ_ENET_HDRLEN_BITS) & WQ_ENET_FLAGS_OM_MASK);
|
|
*eop = (u8)((le16_to_cpu(desc->header_length_flags) >>
|
|
WQ_ENET_FLAGS_EOP_SHIFT) & 1);
|
|
*cq_entry = (u8)((le16_to_cpu(desc->header_length_flags) >>
|
|
WQ_ENET_FLAGS_CQ_ENTRY_SHIFT) & 1);
|
|
*fcoe_encap = (u8)((le16_to_cpu(desc->header_length_flags) >>
|
|
WQ_ENET_FLAGS_FCOE_ENCAP_SHIFT) & 1);
|
|
*vlan_tag_insert = (u8)((le16_to_cpu(desc->header_length_flags) >>
|
|
WQ_ENET_FLAGS_VLAN_TAG_INSERT_SHIFT) & 1);
|
|
*vlan_tag = le16_to_cpu(desc->vlan_tag);
|
|
}
|
|
|
|
#endif /* _WQ_ENET_DESC_H_ */
|