diff options
Diffstat (limited to 'include/linux/mlx4/cq.h')
| -rw-r--r-- | include/linux/mlx4/cq.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/include/linux/mlx4/cq.h b/include/linux/mlx4/cq.h new file mode 100644 index 000000000000..0181e0a57cbf --- /dev/null +++ b/include/linux/mlx4/cq.h @@ -0,0 +1,123 @@ +/* + * 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_CQ_H +#define MLX4_CQ_H + +#include <linux/types.h> + +#include <linux/mlx4/device.h> +#include <linux/mlx4/doorbell.h> + +struct mlx4_cqe { + __be32 my_qpn; + __be32 immed_rss_invalid; + __be32 g_mlpath_rqpn; + u8 sl; + u8 reserved1; + __be16 rlid; + u32 reserved2; + __be32 byte_cnt; + __be16 wqe_index; + __be16 checksum; + u8 reserved3[3]; + u8 owner_sr_opcode; +}; + +struct mlx4_err_cqe { + __be32 my_qpn; + u32 reserved1[5]; + __be16 wqe_index; + u8 vendor_err_syndrome; + u8 syndrome; + u8 reserved2[3]; + u8 owner_sr_opcode; +}; + +enum { + MLX4_CQE_OWNER_MASK = 0x80, + MLX4_CQE_IS_SEND_MASK = 0x40, + MLX4_CQE_OPCODE_MASK = 0x1f +}; + +enum { + MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01, + MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02, + MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04, + MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05, + MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06, + MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10, + MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11, + MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12, + MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13, + MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14, + MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15, + MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16, + MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22, +}; + +static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd, + void __iomem *uar_page, + spinlock_t *doorbell_lock) +{ + __be32 doorbell[2]; + u32 sn; + u32 ci; + + sn = cq->arm_sn & 3; + ci = cq->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 | cq->cqn); + doorbell[1] = cpu_to_be32(ci); + + mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock); +} + +static inline void mlx4_cq_set_ci(struct mlx4_cq *cq) +{ + *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff); +} + +enum { + MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24, + MLX4_CQ_DB_REQ_NOT = 2 << 24 +}; + +#endif /* MLX4_CQ_H */ |