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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_CORE_CQ_H
#define MLX5_CORE_CQ_H
#include <rdma/ib_verbs.h>
#include <linux/mlx5/driver.h>
#include <linux/refcount.h>
struct mlx5_core_cq {
u32 cqn;
int cqe_sz;
__be32 *set_ci_db;
__be32 *arm_db;
struct mlx5_uars_page *uar;
refcount_t refcount;
struct completion free;
unsigned vector;
unsigned int irqn;
void (*comp) (struct mlx5_core_cq *);
void (*event) (struct mlx5_core_cq *, enum mlx5_event);
u32 cons_index;
unsigned arm_sn;
struct mlx5_rsc_debug *dbg;
int pid;
struct {
struct list_head list;
void (*comp)(struct mlx5_core_cq *);
void *priv;
} tasklet_ctx;
int reset_notify_added;
struct list_head reset_notify;
struct mlx5_eq_comp *eq;
u16 uid;
};
enum {
MLX5_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
MLX5_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
MLX5_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
MLX5_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
MLX5_CQE_SYNDROME_MW_BIND_ERR = 0x06,
MLX5_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
MLX5_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
MLX5_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
MLX5_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
MLX5_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
MLX5_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
MLX5_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
MLX5_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
};
enum {
MLX5_CQE_OWNER_MASK = 1,
MLX5_CQE_REQ = 0,
MLX5_CQE_RESP_WR_IMM = 1,
MLX5_CQE_RESP_SEND = 2,
MLX5_CQE_RESP_SEND_IMM = 3,
MLX5_CQE_RESP_SEND_INV = 4,
MLX5_CQE_RESIZE_CQ = 5,
MLX5_CQE_SIG_ERR = 12,
MLX5_CQE_REQ_ERR = 13,
MLX5_CQE_RESP_ERR = 14,
MLX5_CQE_INVALID = 15,
};
enum {
MLX5_CQ_MODIFY_PERIOD = 1 << 0,
MLX5_CQ_MODIFY_COUNT = 1 << 1,
MLX5_CQ_MODIFY_OVERRUN = 1 << 2,
};
enum {
MLX5_CQ_OPMOD_RESIZE = 1,
MLX5_MODIFY_CQ_MASK_LOG_SIZE = 1 << 0,
MLX5_MODIFY_CQ_MASK_PG_OFFSET = 1 << 1,
MLX5_MODIFY_CQ_MASK_PG_SIZE = 1 << 2,
};
struct mlx5_cq_modify_params {
int type;
union {
struct {
u32 page_offset;
u8 log_cq_size;
} resize;
struct {
} moder;
struct {
} mapping;
} params;
};
enum {
CQE_STRIDE_64 = 0,
CQE_STRIDE_128 = 1,
CQE_STRIDE_128_PAD = 2,
};
#define MLX5_MAX_CQ_PERIOD (BIT(__mlx5_bit_sz(cqc, cq_period)) - 1)
#define MLX5_MAX_CQ_COUNT (BIT(__mlx5_bit_sz(cqc, cq_max_count)) - 1)
static inline int cqe_sz_to_mlx_sz(u8 size, int padding_128_en)
{
return padding_128_en ? CQE_STRIDE_128_PAD :
size == 64 ? CQE_STRIDE_64 : CQE_STRIDE_128;
}
static inline void mlx5_cq_set_ci(struct mlx5_core_cq *cq)
{
*cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
}
enum {
MLX5_CQ_DB_REQ_NOT_SOL = 1 << 24,
MLX5_CQ_DB_REQ_NOT = 0 << 24
};
static inline void mlx5_cq_arm(struct mlx5_core_cq *cq, u32 cmd,
void __iomem *uar_page,
u32 cons_index)
{
__be32 doorbell[2];
u32 sn;
u32 ci;
sn = cq->arm_sn & 3;
ci = cons_index & 0xffffff;
*cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);
/* Make sure that the doorbell record in host memory is
* written before ringing the doorbell via PCI MMIO.
*/
wmb();
doorbell[0] = cpu_to_be32(sn << 28 | cmd | ci);
doorbell[1] = cpu_to_be32(cq->cqn);
mlx5_write64(doorbell, uar_page + MLX5_CQ_DOORBELL, NULL);
}
static inline void mlx5_cq_hold(struct mlx5_core_cq *cq)
{
refcount_inc(&cq->refcount);
}
static inline void mlx5_cq_put(struct mlx5_core_cq *cq)
{
if (refcount_dec_and_test(&cq->refcount))
complete(&cq->free);
}
int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
u32 *in, int inlen);
int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
u32 *out, int outlen);
int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
u32 *in, int inlen);
int mlx5_core_modify_cq_moderation(struct mlx5_core_dev *dev,
struct mlx5_core_cq *cq, u16 cq_period,
u16 cq_max_count);
static inline void mlx5_dump_err_cqe(struct mlx5_core_dev *dev,
struct mlx5_err_cqe *err_cqe)
{
print_hex_dump(KERN_WARNING, "", DUMP_PREFIX_OFFSET, 16, 1, err_cqe,
sizeof(*err_cqe), false);
}
int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq);
#endif /* MLX5_CORE_CQ_H */
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