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Diffstat (limited to 'include/linux/mlx5/cq.h')
| -rw-r--r-- | include/linux/mlx5/cq.h | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/include/linux/mlx5/cq.h b/include/linux/mlx5/cq.h new file mode 100644 index 000000000..cb15308b5 --- /dev/null +++ b/include/linux/mlx5/cq.h @@ -0,0 +1,207 @@ +/* + * 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 <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 *cq, struct mlx5_eqe *eqe); + 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 *cq, struct mlx5_eqe *eqe); + 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); +} + +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_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq, + u32 *in, int inlen, u32 *out, int outlen); +int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq, + u32 *in, int inlen, u32 *out, int outlen); +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 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 */ |