335 строки
8.4 KiB
C
335 строки
8.4 KiB
C
/*
|
|
* Copyright(c) 2016 Intel Corporation.
|
|
*
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
|
* redistributing this file, you may do so under either license.
|
|
*
|
|
* GPL LICENSE SUMMARY
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* BSD LICENSE
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* - Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* - Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#ifndef IB_HDRS_H
|
|
#define IB_HDRS_H
|
|
|
|
#include <linux/types.h>
|
|
#include <asm/unaligned.h>
|
|
#include <rdma/ib_verbs.h>
|
|
|
|
#define IB_SEQ_NAK (3 << 29)
|
|
|
|
/* AETH NAK opcode values */
|
|
#define IB_RNR_NAK 0x20
|
|
#define IB_NAK_PSN_ERROR 0x60
|
|
#define IB_NAK_INVALID_REQUEST 0x61
|
|
#define IB_NAK_REMOTE_ACCESS_ERROR 0x62
|
|
#define IB_NAK_REMOTE_OPERATIONAL_ERROR 0x63
|
|
#define IB_NAK_INVALID_RD_REQUEST 0x64
|
|
|
|
#define IB_BTH_REQ_ACK BIT(31)
|
|
#define IB_BTH_SOLICITED BIT(23)
|
|
#define IB_BTH_MIG_REQ BIT(22)
|
|
|
|
#define IB_GRH_VERSION 6
|
|
#define IB_GRH_VERSION_MASK 0xF
|
|
#define IB_GRH_VERSION_SHIFT 28
|
|
#define IB_GRH_TCLASS_MASK 0xFF
|
|
#define IB_GRH_TCLASS_SHIFT 20
|
|
#define IB_GRH_FLOW_MASK 0xFFFFF
|
|
#define IB_GRH_FLOW_SHIFT 0
|
|
#define IB_GRH_NEXT_HDR 0x1B
|
|
#define IB_FECN_SHIFT 31
|
|
#define IB_FECN_MASK 1
|
|
#define IB_FECN_SMASK BIT(IB_FECN_SHIFT)
|
|
#define IB_BECN_SHIFT 30
|
|
#define IB_BECN_MASK 1
|
|
#define IB_BECN_SMASK BIT(IB_BECN_SHIFT)
|
|
|
|
#define IB_AETH_CREDIT_SHIFT 24
|
|
#define IB_AETH_CREDIT_MASK 0x1F
|
|
#define IB_AETH_CREDIT_INVAL 0x1F
|
|
#define IB_AETH_NAK_SHIFT 29
|
|
#define IB_MSN_MASK 0xFFFFFF
|
|
|
|
struct ib_reth {
|
|
__be64 vaddr; /* potentially unaligned */
|
|
__be32 rkey;
|
|
__be32 length;
|
|
} __packed;
|
|
|
|
struct ib_atomic_eth {
|
|
__be64 vaddr; /* potentially unaligned */
|
|
__be32 rkey;
|
|
__be64 swap_data; /* potentially unaligned */
|
|
__be64 compare_data; /* potentially unaligned */
|
|
} __packed;
|
|
|
|
union ib_ehdrs {
|
|
struct {
|
|
__be32 deth[2];
|
|
__be32 imm_data;
|
|
} ud;
|
|
struct {
|
|
struct ib_reth reth;
|
|
__be32 imm_data;
|
|
} rc;
|
|
struct {
|
|
__be32 aeth;
|
|
__be64 atomic_ack_eth; /* potentially unaligned */
|
|
} __packed at;
|
|
__be32 imm_data;
|
|
__be32 aeth;
|
|
__be32 ieth;
|
|
struct ib_atomic_eth atomic_eth;
|
|
} __packed;
|
|
|
|
struct ib_other_headers {
|
|
__be32 bth[3];
|
|
union ib_ehdrs u;
|
|
} __packed;
|
|
|
|
struct ib_header {
|
|
__be16 lrh[4];
|
|
union {
|
|
struct {
|
|
struct ib_grh grh;
|
|
struct ib_other_headers oth;
|
|
} l;
|
|
struct ib_other_headers oth;
|
|
} u;
|
|
} __packed;
|
|
|
|
/* accessors for unaligned __be64 items */
|
|
|
|
static inline u64 ib_u64_get(__be64 *p)
|
|
{
|
|
return get_unaligned_be64(p);
|
|
}
|
|
|
|
static inline void ib_u64_put(u64 val, __be64 *p)
|
|
{
|
|
put_unaligned_be64(val, p);
|
|
}
|
|
|
|
static inline u64 get_ib_reth_vaddr(struct ib_reth *reth)
|
|
{
|
|
return ib_u64_get(&reth->vaddr);
|
|
}
|
|
|
|
static inline void put_ib_reth_vaddr(u64 val, struct ib_reth *reth)
|
|
{
|
|
ib_u64_put(val, &reth->vaddr);
|
|
}
|
|
|
|
static inline u64 get_ib_ateth_vaddr(struct ib_atomic_eth *ateth)
|
|
{
|
|
return ib_u64_get(&ateth->vaddr);
|
|
}
|
|
|
|
static inline void put_ib_ateth_vaddr(u64 val, struct ib_atomic_eth *ateth)
|
|
{
|
|
ib_u64_put(val, &ateth->vaddr);
|
|
}
|
|
|
|
static inline u64 get_ib_ateth_swap(struct ib_atomic_eth *ateth)
|
|
{
|
|
return ib_u64_get(&ateth->swap_data);
|
|
}
|
|
|
|
static inline void put_ib_ateth_swap(u64 val, struct ib_atomic_eth *ateth)
|
|
{
|
|
ib_u64_put(val, &ateth->swap_data);
|
|
}
|
|
|
|
static inline u64 get_ib_ateth_compare(struct ib_atomic_eth *ateth)
|
|
{
|
|
return ib_u64_get(&ateth->compare_data);
|
|
}
|
|
|
|
static inline void put_ib_ateth_compare(u64 val, struct ib_atomic_eth *ateth)
|
|
{
|
|
ib_u64_put(val, &ateth->compare_data);
|
|
}
|
|
|
|
/*
|
|
* 9B/IB Packet Format
|
|
*/
|
|
#define IB_LNH_MASK 3
|
|
#define IB_SC_MASK 0xf
|
|
#define IB_SC_SHIFT 12
|
|
#define IB_SC5_MASK 0x10
|
|
#define IB_SL_MASK 0xf
|
|
#define IB_SL_SHIFT 4
|
|
#define IB_SL_SHIFT 4
|
|
#define IB_LVER_MASK 0xf
|
|
#define IB_LVER_SHIFT 8
|
|
|
|
static inline u8 ib_get_lnh(struct ib_header *hdr)
|
|
{
|
|
return (be16_to_cpu(hdr->lrh[0]) & IB_LNH_MASK);
|
|
}
|
|
|
|
static inline u8 ib_get_sc(struct ib_header *hdr)
|
|
{
|
|
return ((be16_to_cpu(hdr->lrh[0]) >> IB_SC_SHIFT) & IB_SC_MASK);
|
|
}
|
|
|
|
static inline bool ib_is_sc5(u16 sc5)
|
|
{
|
|
return !!(sc5 & IB_SC5_MASK);
|
|
}
|
|
|
|
static inline u8 ib_get_sl(struct ib_header *hdr)
|
|
{
|
|
return ((be16_to_cpu(hdr->lrh[0]) >> IB_SL_SHIFT) & IB_SL_MASK);
|
|
}
|
|
|
|
static inline u16 ib_get_dlid(struct ib_header *hdr)
|
|
{
|
|
return (be16_to_cpu(hdr->lrh[1]));
|
|
}
|
|
|
|
static inline u16 ib_get_slid(struct ib_header *hdr)
|
|
{
|
|
return (be16_to_cpu(hdr->lrh[3]));
|
|
}
|
|
|
|
static inline u8 ib_get_lver(struct ib_header *hdr)
|
|
{
|
|
return (u8)((be16_to_cpu(hdr->lrh[0]) >> IB_LVER_SHIFT) &
|
|
IB_LVER_MASK);
|
|
}
|
|
|
|
static inline u16 ib_get_len(struct ib_header *hdr)
|
|
{
|
|
return (u16)(be16_to_cpu(hdr->lrh[2]));
|
|
}
|
|
|
|
static inline u32 ib_get_qkey(struct ib_other_headers *ohdr)
|
|
{
|
|
return be32_to_cpu(ohdr->u.ud.deth[0]);
|
|
}
|
|
|
|
static inline u32 ib_get_sqpn(struct ib_other_headers *ohdr)
|
|
{
|
|
return ((be32_to_cpu(ohdr->u.ud.deth[1])) & IB_QPN_MASK);
|
|
}
|
|
|
|
/*
|
|
* BTH
|
|
*/
|
|
#define IB_BTH_OPCODE_MASK 0xff
|
|
#define IB_BTH_OPCODE_SHIFT 24
|
|
#define IB_BTH_PAD_MASK 3
|
|
#define IB_BTH_PKEY_MASK 0xffff
|
|
#define IB_BTH_PAD_SHIFT 20
|
|
#define IB_BTH_A_MASK 1
|
|
#define IB_BTH_A_SHIFT 31
|
|
#define IB_BTH_M_MASK 1
|
|
#define IB_BTH_M_SHIFT 22
|
|
#define IB_BTH_SE_MASK 1
|
|
#define IB_BTH_SE_SHIFT 23
|
|
#define IB_BTH_TVER_MASK 0xf
|
|
#define IB_BTH_TVER_SHIFT 16
|
|
|
|
static inline u8 ib_bth_get_pad(struct ib_other_headers *ohdr)
|
|
{
|
|
return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_PAD_SHIFT) &
|
|
IB_BTH_PAD_MASK);
|
|
}
|
|
|
|
static inline u16 ib_bth_get_pkey(struct ib_other_headers *ohdr)
|
|
{
|
|
return (be32_to_cpu(ohdr->bth[0]) & IB_BTH_PKEY_MASK);
|
|
}
|
|
|
|
static inline u8 ib_bth_get_opcode(struct ib_other_headers *ohdr)
|
|
{
|
|
return ((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_OPCODE_SHIFT) &
|
|
IB_BTH_OPCODE_MASK);
|
|
}
|
|
|
|
static inline u8 ib_bth_get_ackreq(struct ib_other_headers *ohdr)
|
|
{
|
|
return (u8)((be32_to_cpu(ohdr->bth[2]) >> IB_BTH_A_SHIFT) &
|
|
IB_BTH_A_MASK);
|
|
}
|
|
|
|
static inline u8 ib_bth_get_migreq(struct ib_other_headers *ohdr)
|
|
{
|
|
return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_M_SHIFT) &
|
|
IB_BTH_M_MASK);
|
|
}
|
|
|
|
static inline u8 ib_bth_get_se(struct ib_other_headers *ohdr)
|
|
{
|
|
return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_SE_SHIFT) &
|
|
IB_BTH_SE_MASK);
|
|
}
|
|
|
|
static inline u32 ib_bth_get_psn(struct ib_other_headers *ohdr)
|
|
{
|
|
return (u32)(be32_to_cpu(ohdr->bth[2]));
|
|
}
|
|
|
|
static inline u32 ib_bth_get_qpn(struct ib_other_headers *ohdr)
|
|
{
|
|
return (u32)((be32_to_cpu(ohdr->bth[1])) & IB_QPN_MASK);
|
|
}
|
|
|
|
static inline u8 ib_bth_get_becn(struct ib_other_headers *ohdr)
|
|
{
|
|
return (u8)((be32_to_cpu(ohdr->bth[1]) >> IB_BECN_SHIFT) &
|
|
IB_BECN_MASK);
|
|
}
|
|
|
|
static inline u8 ib_bth_get_fecn(struct ib_other_headers *ohdr)
|
|
{
|
|
return (u8)((be32_to_cpu(ohdr->bth[1]) >> IB_FECN_SHIFT) &
|
|
IB_FECN_MASK);
|
|
}
|
|
|
|
static inline u8 ib_bth_get_tver(struct ib_other_headers *ohdr)
|
|
{
|
|
return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_TVER_SHIFT) &
|
|
IB_BTH_TVER_MASK);
|
|
}
|
|
|
|
#endif /* IB_HDRS_H */
|