290 lines
7.2 KiB
C
290 lines
7.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
|
|
/*
|
|
* Copyright 2018-2022 Amazon.com, Inc. or its affiliates. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _EFA_IO_H_
|
|
#define _EFA_IO_H_
|
|
|
|
#define EFA_IO_TX_DESC_NUM_BUFS 2
|
|
#define EFA_IO_TX_DESC_NUM_RDMA_BUFS 1
|
|
#define EFA_IO_TX_DESC_INLINE_MAX_SIZE 32
|
|
#define EFA_IO_TX_DESC_IMM_DATA_SIZE 4
|
|
|
|
enum efa_io_queue_type {
|
|
/* send queue (of a QP) */
|
|
EFA_IO_SEND_QUEUE = 1,
|
|
/* recv queue (of a QP) */
|
|
EFA_IO_RECV_QUEUE = 2,
|
|
};
|
|
|
|
enum efa_io_send_op_type {
|
|
/* send message */
|
|
EFA_IO_SEND = 0,
|
|
/* RDMA read */
|
|
EFA_IO_RDMA_READ = 1,
|
|
};
|
|
|
|
enum efa_io_comp_status {
|
|
/* Successful completion */
|
|
EFA_IO_COMP_STATUS_OK = 0,
|
|
/* Flushed during QP destroy */
|
|
EFA_IO_COMP_STATUS_FLUSHED = 1,
|
|
/* Internal QP error */
|
|
EFA_IO_COMP_STATUS_LOCAL_ERROR_QP_INTERNAL_ERROR = 2,
|
|
/* Bad operation type */
|
|
EFA_IO_COMP_STATUS_LOCAL_ERROR_INVALID_OP_TYPE = 3,
|
|
/* Bad AH */
|
|
EFA_IO_COMP_STATUS_LOCAL_ERROR_INVALID_AH = 4,
|
|
/* LKEY not registered or does not match IOVA */
|
|
EFA_IO_COMP_STATUS_LOCAL_ERROR_INVALID_LKEY = 5,
|
|
/* Message too long */
|
|
EFA_IO_COMP_STATUS_LOCAL_ERROR_BAD_LENGTH = 6,
|
|
/* Destination ENI is down or does not run EFA */
|
|
EFA_IO_COMP_STATUS_REMOTE_ERROR_BAD_ADDRESS = 7,
|
|
/* Connection was reset by remote side */
|
|
EFA_IO_COMP_STATUS_REMOTE_ERROR_ABORT = 8,
|
|
/* Bad dest QP number (QP does not exist or is in error state) */
|
|
EFA_IO_COMP_STATUS_REMOTE_ERROR_BAD_DEST_QPN = 9,
|
|
/* Destination resource not ready (no WQEs posted on RQ) */
|
|
EFA_IO_COMP_STATUS_REMOTE_ERROR_RNR = 10,
|
|
/* Receiver SGL too short */
|
|
EFA_IO_COMP_STATUS_REMOTE_ERROR_BAD_LENGTH = 11,
|
|
/* Unexpected status returned by responder */
|
|
EFA_IO_COMP_STATUS_REMOTE_ERROR_BAD_STATUS = 12,
|
|
/* Unresponsive remote - detected locally */
|
|
EFA_IO_COMP_STATUS_LOCAL_ERROR_UNRESP_REMOTE = 13,
|
|
};
|
|
|
|
struct efa_io_tx_meta_desc {
|
|
/* Verbs-generated Request ID */
|
|
u16 req_id;
|
|
|
|
/*
|
|
* control flags
|
|
* 3:0 : op_type - operation type: send/rdma/fast mem
|
|
* ops/etc
|
|
* 4 : has_imm - immediate_data field carries valid
|
|
* data.
|
|
* 5 : inline_msg - inline mode - inline message data
|
|
* follows this descriptor (no buffer descriptors).
|
|
* Note that it is different from immediate data
|
|
* 6 : meta_extension - Extended metadata. MBZ
|
|
* 7 : meta_desc - Indicates metadata descriptor.
|
|
* Must be set.
|
|
*/
|
|
u8 ctrl1;
|
|
|
|
/*
|
|
* control flags
|
|
* 0 : phase
|
|
* 1 : reserved25 - MBZ
|
|
* 2 : first - Indicates first descriptor in
|
|
* transaction. Must be set.
|
|
* 3 : last - Indicates last descriptor in
|
|
* transaction. Must be set.
|
|
* 4 : comp_req - Indicates whether completion should
|
|
* be posted, after packet is transmitted. Valid only
|
|
* for the first descriptor
|
|
* 7:5 : reserved29 - MBZ
|
|
*/
|
|
u8 ctrl2;
|
|
|
|
u16 dest_qp_num;
|
|
|
|
/*
|
|
* If inline_msg bit is set, length of inline message in bytes,
|
|
* otherwise length of SGL (number of buffers).
|
|
*/
|
|
u16 length;
|
|
|
|
/*
|
|
* immediate data: if has_imm is set, then this field is included
|
|
* within Tx message and reported in remote Rx completion.
|
|
*/
|
|
u32 immediate_data;
|
|
|
|
u16 ah;
|
|
|
|
u16 reserved;
|
|
|
|
/* Queue key */
|
|
u32 qkey;
|
|
|
|
u8 reserved2[12];
|
|
};
|
|
|
|
/*
|
|
* Tx queue buffer descriptor, for any transport type. Preceded by metadata
|
|
* descriptor.
|
|
*/
|
|
struct efa_io_tx_buf_desc {
|
|
/* length in bytes */
|
|
u32 length;
|
|
|
|
/*
|
|
* 23:0 : lkey - local memory translation key
|
|
* 31:24 : reserved - MBZ
|
|
*/
|
|
u32 lkey;
|
|
|
|
/* Buffer address bits[31:0] */
|
|
u32 buf_addr_lo;
|
|
|
|
/* Buffer address bits[63:32] */
|
|
u32 buf_addr_hi;
|
|
};
|
|
|
|
struct efa_io_remote_mem_addr {
|
|
/* length in bytes */
|
|
u32 length;
|
|
|
|
/* remote memory translation key */
|
|
u32 rkey;
|
|
|
|
/* Buffer address bits[31:0] */
|
|
u32 buf_addr_lo;
|
|
|
|
/* Buffer address bits[63:32] */
|
|
u32 buf_addr_hi;
|
|
};
|
|
|
|
struct efa_io_rdma_req {
|
|
/* Remote memory address */
|
|
struct efa_io_remote_mem_addr remote_mem;
|
|
|
|
/* Local memory address */
|
|
struct efa_io_tx_buf_desc local_mem[1];
|
|
};
|
|
|
|
/*
|
|
* Tx WQE, composed of tx meta descriptors followed by either tx buffer
|
|
* descriptors or inline data
|
|
*/
|
|
struct efa_io_tx_wqe {
|
|
/* TX meta */
|
|
struct efa_io_tx_meta_desc meta;
|
|
|
|
union {
|
|
/* Send buffer descriptors */
|
|
struct efa_io_tx_buf_desc sgl[2];
|
|
|
|
u8 inline_data[32];
|
|
|
|
/* RDMA local and remote memory addresses */
|
|
struct efa_io_rdma_req rdma_req;
|
|
} data;
|
|
};
|
|
|
|
/*
|
|
* Rx buffer descriptor; RX WQE is composed of one or more RX buffer
|
|
* descriptors.
|
|
*/
|
|
struct efa_io_rx_desc {
|
|
/* Buffer address bits[31:0] */
|
|
u32 buf_addr_lo;
|
|
|
|
/* Buffer Pointer[63:32] */
|
|
u32 buf_addr_hi;
|
|
|
|
/* Verbs-generated request id. */
|
|
u16 req_id;
|
|
|
|
/* Length in bytes. */
|
|
u16 length;
|
|
|
|
/*
|
|
* LKey and control flags
|
|
* 23:0 : lkey
|
|
* 29:24 : reserved - MBZ
|
|
* 30 : first - Indicates first descriptor in WQE
|
|
* 31 : last - Indicates last descriptor in WQE
|
|
*/
|
|
u32 lkey_ctrl;
|
|
};
|
|
|
|
/* Common IO completion descriptor */
|
|
struct efa_io_cdesc_common {
|
|
/*
|
|
* verbs-generated request ID, as provided in the completed tx or rx
|
|
* descriptor.
|
|
*/
|
|
u16 req_id;
|
|
|
|
u8 status;
|
|
|
|
/*
|
|
* flags
|
|
* 0 : phase - Phase bit
|
|
* 2:1 : q_type - enum efa_io_queue_type: send/recv
|
|
* 3 : has_imm - indicates that immediate data is
|
|
* present - for RX completions only
|
|
* 7:4 : reserved28 - MBZ
|
|
*/
|
|
u8 flags;
|
|
|
|
/* local QP number */
|
|
u16 qp_num;
|
|
|
|
/* Transferred length */
|
|
u16 length;
|
|
};
|
|
|
|
/* Tx completion descriptor */
|
|
struct efa_io_tx_cdesc {
|
|
/* Common completion info */
|
|
struct efa_io_cdesc_common common;
|
|
};
|
|
|
|
/* Rx Completion Descriptor */
|
|
struct efa_io_rx_cdesc {
|
|
/* Common completion info */
|
|
struct efa_io_cdesc_common common;
|
|
|
|
/* Remote Address Handle FW index, 0xFFFF indicates invalid ah */
|
|
u16 ah;
|
|
|
|
u16 src_qp_num;
|
|
|
|
/* Immediate data */
|
|
u32 imm;
|
|
};
|
|
|
|
/* Extended Rx Completion Descriptor */
|
|
struct efa_io_rx_cdesc_ex {
|
|
/* Base RX completion info */
|
|
struct efa_io_rx_cdesc rx_cdesc_base;
|
|
|
|
/*
|
|
* Valid only in case of unknown AH (0xFFFF) and CQ set_src_addr is
|
|
* enabled.
|
|
*/
|
|
u8 src_addr[16];
|
|
};
|
|
|
|
/* tx_meta_desc */
|
|
#define EFA_IO_TX_META_DESC_OP_TYPE_MASK GENMASK(3, 0)
|
|
#define EFA_IO_TX_META_DESC_HAS_IMM_MASK BIT(4)
|
|
#define EFA_IO_TX_META_DESC_INLINE_MSG_MASK BIT(5)
|
|
#define EFA_IO_TX_META_DESC_META_EXTENSION_MASK BIT(6)
|
|
#define EFA_IO_TX_META_DESC_META_DESC_MASK BIT(7)
|
|
#define EFA_IO_TX_META_DESC_PHASE_MASK BIT(0)
|
|
#define EFA_IO_TX_META_DESC_FIRST_MASK BIT(2)
|
|
#define EFA_IO_TX_META_DESC_LAST_MASK BIT(3)
|
|
#define EFA_IO_TX_META_DESC_COMP_REQ_MASK BIT(4)
|
|
|
|
/* tx_buf_desc */
|
|
#define EFA_IO_TX_BUF_DESC_LKEY_MASK GENMASK(23, 0)
|
|
|
|
/* rx_desc */
|
|
#define EFA_IO_RX_DESC_LKEY_MASK GENMASK(23, 0)
|
|
#define EFA_IO_RX_DESC_FIRST_MASK BIT(30)
|
|
#define EFA_IO_RX_DESC_LAST_MASK BIT(31)
|
|
|
|
/* cdesc_common */
|
|
#define EFA_IO_CDESC_COMMON_PHASE_MASK BIT(0)
|
|
#define EFA_IO_CDESC_COMMON_Q_TYPE_MASK GENMASK(2, 1)
|
|
#define EFA_IO_CDESC_COMMON_HAS_IMM_MASK BIT(3)
|
|
|
|
#endif /* _EFA_IO_H_ */
|