korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-28 22:54:05 +08:00
Code Issues Packages Projects Releases Wiki Activity

IB/core: Add ib headers for general use

Browse Source 
Add IB headers, defines, and accessors that are identical
in both qib and hfi1 into the core includes.

The accessors for be maintenance of __be64 fields since
alignment is potentially invalid and can differ based on
the presense of the GRH.

{hfi1,qib}_ib_headers will be ib_headers.
{hfi1,qib|_other_headers will be ib_other_headers.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mike Marciniszyn 2016-09-06 04:34:49 -07:00 committed by Doug Ledford
parent 4d6f85c3fa
commit 7368ef0235
1 changed files with 178 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

178
include/rdma/ib_hdrs.h Normal file
View File

@ -0,0 +1,178 @@
/*
* 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
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);
}
#endif /* IB_HDRS_H */