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/*
* Copyright (c) 2013-2015, Mellanox Technologies. 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 MLX5_QP_H
#define MLX5_QP_H
#include <linux/mlx5/device.h>
#include <linux/mlx5/driver.h>
#define MLX5_INVALID_LKEY 0x100
#define MLX5_SIG_WQE_SIZE (MLX5_SEND_WQE_BB * 5)
#define MLX5_DIF_SIZE 8
#define MLX5_STRIDE_BLOCK_OP 0x400
#define MLX5_CPY_GRD_MASK 0xc0
#define MLX5_CPY_APP_MASK 0x30
#define MLX5_CPY_REF_MASK 0x0f
#define MLX5_BSF_INC_REFTAG (1 << 6)
#define MLX5_BSF_INL_VALID (1 << 15)
#define MLX5_BSF_REFRESH_DIF (1 << 14)
#define MLX5_BSF_REPEAT_BLOCK (1 << 7)
#define MLX5_BSF_APPTAG_ESCAPE 0x1
#define MLX5_BSF_APPREF_ESCAPE 0x2
#define MLX5_QPN_BITS 24
#define MLX5_QPN_MASK ((1 << MLX5_QPN_BITS) - 1)
enum mlx5_qp_optpar {
MLX5_QP_OPTPAR_ALT_ADDR_PATH = 1 << 0,
MLX5_QP_OPTPAR_RRE = 1 << 1,
MLX5_QP_OPTPAR_RAE = 1 << 2,
MLX5_QP_OPTPAR_RWE = 1 << 3,
MLX5_QP_OPTPAR_PKEY_INDEX = 1 << 4,
MLX5_QP_OPTPAR_Q_KEY = 1 << 5,
MLX5_QP_OPTPAR_RNR_TIMEOUT = 1 << 6,
MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH = 1 << 7,
MLX5_QP_OPTPAR_SRA_MAX = 1 << 8,
MLX5_QP_OPTPAR_RRA_MAX = 1 << 9,
MLX5_QP_OPTPAR_PM_STATE = 1 << 10,
MLX5_QP_OPTPAR_RETRY_COUNT = 1 << 12,
MLX5_QP_OPTPAR_RNR_RETRY = 1 << 13,
MLX5_QP_OPTPAR_ACK_TIMEOUT = 1 << 14,
MLX5_QP_OPTPAR_PRI_PORT = 1 << 16,
MLX5_QP_OPTPAR_SRQN = 1 << 18,
MLX5_QP_OPTPAR_CQN_RCV = 1 << 19,
MLX5_QP_OPTPAR_DC_HS = 1 << 20,
MLX5_QP_OPTPAR_DC_KEY = 1 << 21,
};
enum mlx5_qp_state {
MLX5_QP_STATE_RST = 0,
MLX5_QP_STATE_INIT = 1,
MLX5_QP_STATE_RTR = 2,
MLX5_QP_STATE_RTS = 3,
MLX5_QP_STATE_SQER = 4,
MLX5_QP_STATE_SQD = 5,
MLX5_QP_STATE_ERR = 6,
MLX5_QP_STATE_SQ_DRAINING = 7,
MLX5_QP_STATE_SUSPENDED = 9,
MLX5_QP_NUM_STATE
};
enum {
MLX5_QP_ST_RC = 0x0,
MLX5_QP_ST_UC = 0x1,
MLX5_QP_ST_UD = 0x2,
MLX5_QP_ST_XRC = 0x3,
MLX5_QP_ST_MLX = 0x4,
MLX5_QP_ST_DCI = 0x5,
MLX5_QP_ST_DCT = 0x6,
MLX5_QP_ST_QP0 = 0x7,
MLX5_QP_ST_QP1 = 0x8,
MLX5_QP_ST_RAW_ETHERTYPE = 0x9,
MLX5_QP_ST_RAW_IPV6 = 0xa,
MLX5_QP_ST_SNIFFER = 0xb,
MLX5_QP_ST_SYNC_UMR = 0xe,
MLX5_QP_ST_PTP_1588 = 0xd,
MLX5_QP_ST_REG_UMR = 0xc,
MLX5_QP_ST_MAX
};
enum {
MLX5_QP_PM_MIGRATED = 0x3,
MLX5_QP_PM_ARMED = 0x0,
MLX5_QP_PM_REARM = 0x1
};
enum {
MLX5_NON_ZERO_RQ = 0 << 24,
MLX5_SRQ_RQ = 1 << 24,
MLX5_CRQ_RQ = 2 << 24,
MLX5_ZERO_LEN_RQ = 3 << 24
};
enum {
/* params1 */
MLX5_QP_BIT_SRE = 1 << 15,
MLX5_QP_BIT_SWE = 1 << 14,
MLX5_QP_BIT_SAE = 1 << 13,
/* params2 */
MLX5_QP_BIT_RRE = 1 << 15,
MLX5_QP_BIT_RWE = 1 << 14,
MLX5_QP_BIT_RAE = 1 << 13,
MLX5_QP_BIT_RIC = 1 << 4,
};
enum {
MLX5_WQE_CTRL_CQ_UPDATE = 2 << 2,
MLX5_WQE_CTRL_CQ_UPDATE_AND_EQE = 3 << 2,
MLX5_WQE_CTRL_SOLICITED = 1 << 1,
};
enum {
MLX5_SEND_WQE_DS = 16,
MLX5_SEND_WQE_BB = 64,
};
#define MLX5_SEND_WQEBB_NUM_DS (MLX5_SEND_WQE_BB / MLX5_SEND_WQE_DS)
enum {
MLX5_SEND_WQE_MAX_WQEBBS = 16,
};
enum {
MLX5_WQE_FMR_PERM_LOCAL_READ = 1 << 27,
MLX5_WQE_FMR_PERM_LOCAL_WRITE = 1 << 28,
MLX5_WQE_FMR_PERM_REMOTE_READ = 1 << 29,
MLX5_WQE_FMR_PERM_REMOTE_WRITE = 1 << 30,
MLX5_WQE_FMR_PERM_ATOMIC = 1 << 31
};
enum {
MLX5_FENCE_MODE_NONE = 0 << 5,
MLX5_FENCE_MODE_INITIATOR_SMALL = 1 << 5,
MLX5_FENCE_MODE_FENCE = 2 << 5,
MLX5_FENCE_MODE_STRONG_ORDERING = 3 << 5,
MLX5_FENCE_MODE_SMALL_AND_FENCE = 4 << 5,
};
enum {
MLX5_QP_LAT_SENSITIVE = 1 << 28,
MLX5_QP_BLOCK_MCAST = 1 << 30,
MLX5_QP_ENABLE_SIG = 1 << 31,
};
enum {
MLX5_RCV_DBR = 0,
MLX5_SND_DBR = 1,
};
enum {
MLX5_FLAGS_INLINE = 1<<7,
MLX5_FLAGS_CHECK_FREE = 1<<5,
};
struct mlx5_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 mlx5_wqe_ctrl_seg {
__be32 opmod_idx_opcode;
__be32 qpn_ds;
u8 signature;
u8 rsvd[2];
u8 fm_ce_se;
__be32 imm;
};
#define MLX5_WQE_CTRL_DS_MASK 0x3f
#define MLX5_WQE_CTRL_QPN_MASK 0xffffff00
#define MLX5_WQE_CTRL_QPN_SHIFT 8
#define MLX5_WQE_DS_UNITS 16
#define MLX5_WQE_CTRL_OPCODE_MASK 0xff
#define MLX5_WQE_CTRL_WQE_INDEX_MASK 0x00ffff00
#define MLX5_WQE_CTRL_WQE_INDEX_SHIFT 8
enum {
MLX5_ETH_WQE_L3_INNER_CSUM = 1 << 4,
MLX5_ETH_WQE_L4_INNER_CSUM = 1 << 5,
MLX5_ETH_WQE_L3_CSUM = 1 << 6,
MLX5_ETH_WQE_L4_CSUM = 1 << 7,
};
struct mlx5_wqe_eth_seg {
u8 rsvd0[4];
u8 cs_flags;
u8 rsvd1;
__be16 mss;
__be32 rsvd2;
__be16 inline_hdr_sz;
u8 inline_hdr_start[2];
};
struct mlx5_wqe_xrc_seg {
__be32 xrc_srqn;
u8 rsvd[12];
};
struct mlx5_wqe_masked_atomic_seg {
__be64 swap_add;
__be64 compare;
__be64 swap_add_mask;
__be64 compare_mask;
};
struct mlx5_av {
union {
struct {
__be32 qkey;
__be32 reserved;
} qkey;
__be64 dc_key;
} key;
__be32 dqp_dct;
u8 stat_rate_sl;
u8 fl_mlid;
__be16 rlid;
u8 reserved0[10];
u8 tclass;
u8 hop_limit;
__be32 grh_gid_fl;
u8 rgid[16];
};
struct mlx5_wqe_datagram_seg {
struct mlx5_av av;
};
struct mlx5_wqe_raddr_seg {
__be64 raddr;
__be32 rkey;
u32 reserved;
};
struct mlx5_wqe_atomic_seg {
__be64 swap_add;
__be64 compare;
};
struct mlx5_wqe_data_seg {
__be32 byte_count;
__be32 lkey;
__be64 addr;
};
struct mlx5_wqe_umr_ctrl_seg {
u8 flags;
u8 rsvd0[3];
__be16 klm_octowords;
__be16 bsf_octowords;
__be64 mkey_mask;
u8 rsvd1[32];
};
struct mlx5_seg_set_psv {
__be32 psv_num;
__be16 syndrome;
__be16 status;
__be32 transient_sig;
__be32 ref_tag;
};
struct mlx5_seg_get_psv {
u8 rsvd[19];
u8 num_psv;
__be32 l_key;
__be64 va;
__be32 psv_index[4];
};
struct mlx5_seg_check_psv {
u8 rsvd0[2];
__be16 err_coalescing_op;
u8 rsvd1[2];
__be16 xport_err_op;
u8 rsvd2[2];
__be16 xport_err_mask;
u8 rsvd3[7];
u8 num_psv;
__be32 l_key;
__be64 va;
__be32 psv_index[4];
};
struct mlx5_rwqe_sig {
u8 rsvd0[4];
u8 signature;
u8 rsvd1[11];
};
struct mlx5_wqe_signature_seg {
u8 rsvd0[4];
u8 signature;
u8 rsvd1[11];
};
#define MLX5_WQE_INLINE_SEG_BYTE_COUNT_MASK 0x3ff
struct mlx5_wqe_inline_seg {
__be32 byte_count;
};
enum mlx5_sig_type {
MLX5_DIF_CRC = 0x1,
MLX5_DIF_IPCS = 0x2,
};
struct mlx5_bsf_inl {
__be16 vld_refresh;
__be16 dif_apptag;
__be32 dif_reftag;
u8 sig_type;
u8 rp_inv_seed;
u8 rsvd[3];
u8 dif_inc_ref_guard_check;
__be16 dif_app_bitmask_check;
};
struct mlx5_bsf {
struct mlx5_bsf_basic {
u8 bsf_size_sbs;
u8 check_byte_mask;
union {
u8 copy_byte_mask;
u8 bs_selector;
u8 rsvd_wflags;
} wire;
union {
u8 bs_selector;
u8 rsvd_mflags;
} mem;
__be32 raw_data_size;
__be32 w_bfs_psv;
__be32 m_bfs_psv;
} basic;
struct mlx5_bsf_ext {
__be32 t_init_gen_pro_size;
__be32 rsvd_epi_size;
__be32 w_tfs_psv;
__be32 m_tfs_psv;
} ext;
struct mlx5_bsf_inl w_inl;
struct mlx5_bsf_inl m_inl;
};
struct mlx5_klm {
__be32 bcount;
__be32 key;
__be64 va;
};
struct mlx5_stride_block_entry {
__be16 stride;
__be16 bcount;
__be32 key;
__be64 va;
};
struct mlx5_stride_block_ctrl_seg {
__be32 bcount_per_cycle;
__be32 op;
__be32 repeat_count;
u16 rsvd;
__be16 num_entries;
};
enum mlx5_pagefault_flags {
MLX5_PFAULT_REQUESTOR = 1 << 0,
MLX5_PFAULT_WRITE = 1 << 1,
MLX5_PFAULT_RDMA = 1 << 2,
};
/* Contains the details of a pagefault. */
struct mlx5_pagefault {
u32 bytes_committed;
u8 event_subtype;
enum mlx5_pagefault_flags flags;
union {
/* Initiator or send message responder pagefault details. */
struct {
/* Received packet size, only valid for responders. */
u32 packet_size;
/*
* WQE index. Refers to either the send queue or
* receive queue, according to event_subtype.
*/
u16 wqe_index;
} wqe;
/* RDMA responder pagefault details */
struct {
u32 r_key;
/*
* Received packet size, minimal size page fault
* resolution required for forward progress.
*/
u32 packet_size;
u32 rdma_op_len;
u64 rdma_va;
} rdma;
};
};
struct mlx5_core_qp {
struct mlx5_core_rsc_common common; /* must be first */
void (*event) (struct mlx5_core_qp *, int);
void (*pfault_handler)(struct mlx5_core_qp *, struct mlx5_pagefault *);
int qpn;
struct mlx5_rsc_debug *dbg;
int pid;
};
struct mlx5_qp_path {
u8 fl;
u8 rsvd3;
u8 free_ar;
u8 pkey_index;
u8 rsvd0;
u8 grh_mlid;
__be16 rlid;
u8 ackto_lt;
u8 mgid_index;
u8 static_rate;
u8 hop_limit;
__be32 tclass_flowlabel;
u8 rgid[16];
u8 rsvd1[4];
u8 sl;
u8 port;
u8 rsvd2[6];
};
struct mlx5_qp_context {
__be32 flags;
__be32 flags_pd;
u8 mtu_msgmax;
u8 rq_size_stride;
__be16 sq_crq_size;
__be32 qp_counter_set_usr_page;
__be32 wire_qpn;
__be32 log_pg_sz_remote_qpn;
struct mlx5_qp_path pri_path;
struct mlx5_qp_path alt_path;
__be32 params1;
u8 reserved2[4];
__be32 next_send_psn;
__be32 cqn_send;
u8 reserved3[8];
__be32 last_acked_psn;
__be32 ssn;
__be32 params2;
__be32 rnr_nextrecvpsn;
__be32 xrcd;
__be32 cqn_recv;
__be64 db_rec_addr;
__be32 qkey;
__be32 rq_type_srqn;
__be32 rmsn;
__be16 hw_sq_wqe_counter;
__be16 sw_sq_wqe_counter;
__be16 hw_rcyclic_byte_counter;
__be16 hw_rq_counter;
__be16 sw_rcyclic_byte_counter;
__be16 sw_rq_counter;
u8 rsvd0[5];
u8 cgs;
u8 cs_req;
u8 cs_res;
__be64 dc_access_key;
u8 rsvd1[24];
};
struct mlx5_create_qp_mbox_in {
struct mlx5_inbox_hdr hdr;
__be32 input_qpn;
u8 rsvd0[4];
__be32 opt_param_mask;
u8 rsvd1[4];
struct mlx5_qp_context ctx;
u8 rsvd3[16];
__be64 pas[0];
};
struct mlx5_create_qp_mbox_out {
struct mlx5_outbox_hdr hdr;
__be32 qpn;
u8 rsvd0[4];
};
struct mlx5_destroy_qp_mbox_in {
struct mlx5_inbox_hdr hdr;
__be32 qpn;
u8 rsvd0[4];
};
struct mlx5_destroy_qp_mbox_out {
struct mlx5_outbox_hdr hdr;
u8 rsvd0[8];
};
struct mlx5_modify_qp_mbox_in {
struct mlx5_inbox_hdr hdr;
__be32 qpn;
u8 rsvd0[4];
__be32 optparam;
u8 rsvd1[4];
struct mlx5_qp_context ctx;
u8 rsvd2[16];
};
struct mlx5_modify_qp_mbox_out {
struct mlx5_outbox_hdr hdr;
u8 rsvd0[8];
};
struct mlx5_query_qp_mbox_in {
struct mlx5_inbox_hdr hdr;
__be32 qpn;
u8 rsvd[4];
};
struct mlx5_query_qp_mbox_out {
struct mlx5_outbox_hdr hdr;
u8 rsvd1[8];
__be32 optparam;
u8 rsvd0[4];
struct mlx5_qp_context ctx;
u8 rsvd2[16];
__be64 pas[0];
};
struct mlx5_conf_sqp_mbox_in {
struct mlx5_inbox_hdr hdr;
__be32 qpn;
u8 rsvd[3];
u8 type;
};
struct mlx5_conf_sqp_mbox_out {
struct mlx5_outbox_hdr hdr;
u8 rsvd[8];
};
struct mlx5_alloc_xrcd_mbox_in {
struct mlx5_inbox_hdr hdr;
u8 rsvd[8];
};
struct mlx5_alloc_xrcd_mbox_out {
struct mlx5_outbox_hdr hdr;
__be32 xrcdn;
u8 rsvd[4];
};
struct mlx5_dealloc_xrcd_mbox_in {
struct mlx5_inbox_hdr hdr;
__be32 xrcdn;
u8 rsvd[4];
};
struct mlx5_dealloc_xrcd_mbox_out {
struct mlx5_outbox_hdr hdr;
u8 rsvd[8];
};
static inline struct mlx5_core_qp *__mlx5_qp_lookup(struct mlx5_core_dev *dev, u32 qpn)
{
return radix_tree_lookup(&dev->priv.qp_table.tree, qpn);
}
static inline struct mlx5_core_mr *__mlx5_mr_lookup(struct mlx5_core_dev *dev, u32 key)
{
return radix_tree_lookup(&dev->priv.mr_table.tree, key);
}
struct mlx5_page_fault_resume_mbox_in {
struct mlx5_inbox_hdr hdr;
__be32 flags_qpn;
u8 reserved[4];
};
struct mlx5_page_fault_resume_mbox_out {
struct mlx5_outbox_hdr hdr;
u8 rsvd[8];
};
int mlx5_core_create_qp(struct mlx5_core_dev *dev,
struct mlx5_core_qp *qp,
struct mlx5_create_qp_mbox_in *in,
int inlen);
int mlx5_core_qp_modify(struct mlx5_core_dev *dev, enum mlx5_qp_state cur_state,
enum mlx5_qp_state new_state,
struct mlx5_modify_qp_mbox_in *in, int sqd_event,
struct mlx5_core_qp *qp);
int mlx5_core_destroy_qp(struct mlx5_core_dev *dev,
struct mlx5_core_qp *qp);
int mlx5_core_qp_query(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
struct mlx5_query_qp_mbox_out *out, int outlen);
int mlx5_core_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn);
int mlx5_core_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn);
void mlx5_init_qp_table(struct mlx5_core_dev *dev);
void mlx5_cleanup_qp_table(struct mlx5_core_dev *dev);
int mlx5_debug_qp_add(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp);
void mlx5_debug_qp_remove(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp);
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
int mlx5_core_page_fault_resume(struct mlx5_core_dev *dev, u32 qpn,
u8 context, int error);
#endif
static inline const char *mlx5_qp_type_str(int type)
{
switch (type) {
case MLX5_QP_ST_RC: return "RC";
case MLX5_QP_ST_UC: return "C";
case MLX5_QP_ST_UD: return "UD";
case MLX5_QP_ST_XRC: return "XRC";
case MLX5_QP_ST_MLX: return "MLX";
case MLX5_QP_ST_QP0: return "QP0";
case MLX5_QP_ST_QP1: return "QP1";
case MLX5_QP_ST_RAW_ETHERTYPE: return "RAW_ETHERTYPE";
case MLX5_QP_ST_RAW_IPV6: return "RAW_IPV6";
case MLX5_QP_ST_SNIFFER: return "SNIFFER";
case MLX5_QP_ST_SYNC_UMR: return "SYNC_UMR";
case MLX5_QP_ST_PTP_1588: return "PTP_1588";
case MLX5_QP_ST_REG_UMR: return "REG_UMR";
default: return "Invalid transport type";
}
}
static inline const char *mlx5_qp_state_str(int state)
{
switch (state) {
case MLX5_QP_STATE_RST:
return "RST";
case MLX5_QP_STATE_INIT:
return "INIT";
case MLX5_QP_STATE_RTR:
return "RTR";
case MLX5_QP_STATE_RTS:
return "RTS";
case MLX5_QP_STATE_SQER:
return "SQER";
case MLX5_QP_STATE_SQD:
return "SQD";
case MLX5_QP_STATE_ERR:
return "ERR";
case MLX5_QP_STATE_SQ_DRAINING:
return "SQ_DRAINING";
case MLX5_QP_STATE_SUSPENDED:
return "SUSPENDED";
default: return "Invalid QP state";
}
}
#endif /* MLX5_QP_H */
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