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linux-next/include/linux/mlx4/qp.h
Jack Morgenstein 2ac6bf4ddc IB/mlx4: Add strong ordering to local inval and fast reg work requests 
The ConnectX Programmer's Reference Manual states that the "SO" bit
must be set when posting Fast Register and Local Invalidate send work
requests.  When this bit is set, the work request will be executed
only after all previous work requests on the send queue have been
executed.  (If the bit is not set, Fast Register and Local Invalidate
WQEs may begin execution too early, which violates the defined
semantics for these operations)

This fixes the issue with NFS/RDMA reported in
<http://lists.openfabrics.org/pipermail/general/2009-April/059253.html>

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Cc: <stable@kernel.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
2009-06-05 10:36:24 -07:00

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/*
* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* 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.
*
* 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 MLX4_QP_H
#define MLX4_QP_H
#include <linux/types.h>
#include <linux/mlx4/device.h>
#define MLX4_INVALID_LKEY 0x100
enum mlx4_qp_optpar {
MLX4_QP_OPTPAR_ALT_ADDR_PATH = 1 << 0,
MLX4_QP_OPTPAR_RRE = 1 << 1,
MLX4_QP_OPTPAR_RAE = 1 << 2,
MLX4_QP_OPTPAR_RWE = 1 << 3,
MLX4_QP_OPTPAR_PKEY_INDEX = 1 << 4,
MLX4_QP_OPTPAR_Q_KEY = 1 << 5,
MLX4_QP_OPTPAR_RNR_TIMEOUT = 1 << 6,
MLX4_QP_OPTPAR_PRIMARY_ADDR_PATH = 1 << 7,
MLX4_QP_OPTPAR_SRA_MAX = 1 << 8,
MLX4_QP_OPTPAR_RRA_MAX = 1 << 9,
MLX4_QP_OPTPAR_PM_STATE = 1 << 10,
MLX4_QP_OPTPAR_RETRY_COUNT = 1 << 12,
MLX4_QP_OPTPAR_RNR_RETRY = 1 << 13,
MLX4_QP_OPTPAR_ACK_TIMEOUT = 1 << 14,
MLX4_QP_OPTPAR_SCHED_QUEUE = 1 << 16
};
enum mlx4_qp_state {
MLX4_QP_STATE_RST = 0,
MLX4_QP_STATE_INIT = 1,
MLX4_QP_STATE_RTR = 2,
MLX4_QP_STATE_RTS = 3,
MLX4_QP_STATE_SQER = 4,
MLX4_QP_STATE_SQD = 5,
MLX4_QP_STATE_ERR = 6,
MLX4_QP_STATE_SQ_DRAINING = 7,
MLX4_QP_NUM_STATE
};
enum {
MLX4_QP_ST_RC = 0x0,
MLX4_QP_ST_UC = 0x1,
MLX4_QP_ST_RD = 0x2,
MLX4_QP_ST_UD = 0x3,
MLX4_QP_ST_MLX = 0x7
};
enum {
MLX4_QP_PM_MIGRATED = 0x3,
MLX4_QP_PM_ARMED = 0x0,
MLX4_QP_PM_REARM = 0x1
};
enum {
/* params1 */
MLX4_QP_BIT_SRE = 1 << 15,
MLX4_QP_BIT_SWE = 1 << 14,
MLX4_QP_BIT_SAE = 1 << 13,
/* params2 */
MLX4_QP_BIT_RRE = 1 << 15,
MLX4_QP_BIT_RWE = 1 << 14,
MLX4_QP_BIT_RAE = 1 << 13,
MLX4_QP_BIT_RIC = 1 << 4,
};
struct mlx4_qp_path {
u8 fl;
u8 reserved1[2];
u8 pkey_index;
u8 reserved2;
u8 grh_mylmc;
__be16 rlid;
u8 ackto;
u8 mgid_index;
u8 static_rate;
u8 hop_limit;
__be32 tclass_flowlabel;
u8 rgid[16];
u8 sched_queue;
u8 snooper_flags;
u8 reserved3[2];
u8 counter_index;
u8 reserved4[7];
};
struct mlx4_qp_context {
__be32 flags;
__be32 pd;
u8 mtu_msgmax;
u8 rq_size_stride;
u8 sq_size_stride;
u8 rlkey;
__be32 usr_page;
__be32 local_qpn;
__be32 remote_qpn;
struct mlx4_qp_path pri_path;
struct mlx4_qp_path alt_path;
__be32 params1;
u32 reserved1;
__be32 next_send_psn;
__be32 cqn_send;
u32 reserved2[2];
__be32 last_acked_psn;
__be32 ssn;
__be32 params2;
__be32 rnr_nextrecvpsn;
__be32 srcd;
__be32 cqn_recv;
__be64 db_rec_addr;
__be32 qkey;
__be32 srqn;
__be32 msn;
__be16 rq_wqe_counter;
__be16 sq_wqe_counter;
u32 reserved3[2];
__be32 param3;
__be32 nummmcpeers_basemkey;
u8 log_page_size;
u8 reserved4[2];
u8 mtt_base_addr_h;
__be32 mtt_base_addr_l;
u32 reserved5[10];
};
/* Which firmware version adds support for NEC (NoErrorCompletion) bit */
#define MLX4_FW_VER_WQE_CTRL_NEC mlx4_fw_ver(2, 2, 232)
enum {
MLX4_WQE_CTRL_NEC = 1 << 29,
MLX4_WQE_CTRL_FENCE = 1 << 6,
MLX4_WQE_CTRL_CQ_UPDATE = 3 << 2,
MLX4_WQE_CTRL_SOLICITED = 1 << 1,
MLX4_WQE_CTRL_IP_CSUM = 1 << 4,
MLX4_WQE_CTRL_TCP_UDP_CSUM = 1 << 5,
MLX4_WQE_CTRL_INS_VLAN = 1 << 6,
MLX4_WQE_CTRL_STRONG_ORDER = 1 << 7,
};
struct mlx4_wqe_ctrl_seg {
__be32 owner_opcode;
__be16 vlan_tag;
u8 ins_vlan;
u8 fence_size;
/*
* High 24 bits are SRC remote buffer; low 8 bits are flags:
* [7] SO (strong ordering)
* [5] TCP/UDP checksum
* [4] IP checksum
* [3:2] C (generate completion queue entry)
* [1] SE (solicited event)
*/
__be32 srcrb_flags;
/*
* imm is immediate data for send/RDMA write w/ immediate;
* also invalidation key for send with invalidate; input
* modifier for WQEs on CCQs.
*/
__be32 imm;
};
enum {
MLX4_WQE_MLX_VL15 = 1 << 17,
MLX4_WQE_MLX_SLR = 1 << 16
};
struct mlx4_wqe_mlx_seg {
u8 owner;
u8 reserved1[2];
u8 opcode;
u8 reserved2[3];
u8 size;
/*
* [17] VL15
* [16] SLR
* [15:12] static rate
* [11:8] SL
* [4] ICRC
* [3:2] C
* [0] FL (force loopback)
*/
__be32 flags;
__be16 rlid;
u16 reserved3;
};
struct mlx4_wqe_datagram_seg {
__be32 av[8];
__be32 dqpn;
__be32 qkey;
__be32 reservd[2];
};
struct mlx4_wqe_lso_seg {
__be32 mss_hdr_size;
__be32 header[0];
};
struct mlx4_wqe_bind_seg {
__be32 flags1;
__be32 flags2;
__be32 new_rkey;
__be32 lkey;
__be64 addr;
__be64 length;
};
enum {
MLX4_WQE_FMR_PERM_LOCAL_READ = 1 << 27,
MLX4_WQE_FMR_PERM_LOCAL_WRITE = 1 << 28,
MLX4_WQE_FMR_PERM_REMOTE_READ = 1 << 29,
MLX4_WQE_FMR_PERM_REMOTE_WRITE = 1 << 30,
MLX4_WQE_FMR_PERM_ATOMIC = 1 << 31
};
struct mlx4_wqe_fmr_seg {
__be32 flags;
__be32 mem_key;
__be64 buf_list;
__be64 start_addr;
__be64 reg_len;
__be32 offset;
__be32 page_size;
u32 reserved[2];
};
struct mlx4_wqe_fmr_ext_seg {
u8 flags;
u8 reserved;
__be16 app_mask;
__be16 wire_app_tag;
__be16 mem_app_tag;
__be32 wire_ref_tag_base;
__be32 mem_ref_tag_base;
};
struct mlx4_wqe_local_inval_seg {
__be32 flags;
u32 reserved1;
__be32 mem_key;
u32 reserved2[2];
__be32 guest_id;
__be64 pa;
};
struct mlx4_wqe_raddr_seg {
__be64 raddr;
__be32 rkey;
u32 reserved;
};
struct mlx4_wqe_atomic_seg {
__be64 swap_add;
__be64 compare;
};
struct mlx4_wqe_data_seg {
__be32 byte_count;
__be32 lkey;
__be64 addr;
};
enum {
MLX4_INLINE_ALIGN = 64,
};
struct mlx4_wqe_inline_seg {
__be32 byte_count;
};
int mlx4_qp_modify(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
enum mlx4_qp_state cur_state, enum mlx4_qp_state new_state,
struct mlx4_qp_context *context, enum mlx4_qp_optpar optpar,
int sqd_event, struct mlx4_qp *qp);
int mlx4_qp_query(struct mlx4_dev *dev, struct mlx4_qp *qp,
struct mlx4_qp_context *context);
int mlx4_qp_to_ready(struct mlx4_dev *dev, struct mlx4_mtt *mtt,
struct mlx4_qp_context *context,
struct mlx4_qp *qp, enum mlx4_qp_state *qp_state);
static inline struct mlx4_qp *__mlx4_qp_lookup(struct mlx4_dev *dev, u32 qpn)
{
return radix_tree_lookup(&dev->qp_table_tree, qpn & (dev->caps.num_qps - 1));
}
void mlx4_qp_remove(struct mlx4_dev *dev, struct mlx4_qp *qp);
#endif /* MLX4_QP_H */
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