uapi/rdma/qedr-abi.h

0001 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */
0002 /* QLogic qedr NIC Driver
0003  * Copyright (c) 2015-2016  QLogic Corporation
0004  *
0005  * This software is available to you under a choice of one of two
0006  * licenses.  You may choose to be licensed under the terms of the GNU
0007  * General Public License (GPL) Version 2, available from the file
0008  * COPYING in the main directory of this source tree, or the
0009  * OpenIB.org BSD license below:
0010  *
0011  *     Redistribution and use in source and binary forms, with or
0012  *     without modification, are permitted provided that the following
0013  *     conditions are met:
0014  *
0015  *      - Redistributions of source code must retain the above
0016  *        copyright notice, this list of conditions and the following
0017  *        disclaimer.
0018  *
0019  *      - Redistributions in binary form must reproduce the above
0020  *        copyright notice, this list of conditions and the following
0021  *        disclaimer in the documentation and /or other materials
0022  *        provided with the distribution.
0023  *
0024  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
0025  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0026  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
0027  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
0028  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
0029  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
0030  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
0031  * SOFTWARE.
0032  */
0033 #ifndef __QEDR_USER_H__
0034 #define __QEDR_USER_H__
0035
0036 #include <linux/types.h>
0037
0038 #define QEDR_ABI_VERSION        (8)
0039
0040 /* user kernel communication data structures. */
0041 enum qedr_alloc_ucontext_flags {
0042     QEDR_ALLOC_UCTX_EDPM_MODE   = 1 << 0,
0043     QEDR_ALLOC_UCTX_DB_REC      = 1 << 1,
0044     QEDR_SUPPORT_DPM_SIZES      = 1 << 2,
0045 };
0046
0047 struct qedr_alloc_ucontext_req {
0048     __u32 context_flags;
0049     __u32 reserved;
0050 };
0051
0052 #define QEDR_LDPM_MAX_SIZE  (8192)
0053 #define QEDR_EDPM_TRANS_SIZE    (64)
0054 #define QEDR_EDPM_MAX_SIZE  (ROCE_REQ_MAX_INLINE_DATA_SIZE)
0055
0056 enum qedr_rdma_dpm_type {
0057     QEDR_DPM_TYPE_NONE      = 0,
0058     QEDR_DPM_TYPE_ROCE_ENHANCED = 1 << 0,
0059     QEDR_DPM_TYPE_ROCE_LEGACY   = 1 << 1,
0060     QEDR_DPM_TYPE_IWARP_LEGACY  = 1 << 2,
0061     QEDR_DPM_TYPE_ROCE_EDPM_MODE    = 1 << 3,
0062     QEDR_DPM_SIZES_SET      = 1 << 4,
0063 };
0064
0065 struct qedr_alloc_ucontext_resp {
0066     __aligned_u64 db_pa;
0067     __u32 db_size;
0068
0069     __u32 max_send_wr;
0070     __u32 max_recv_wr;
0071     __u32 max_srq_wr;
0072     __u32 sges_per_send_wr;
0073     __u32 sges_per_recv_wr;
0074     __u32 sges_per_srq_wr;
0075     __u32 max_cqes;
0076     __u8 dpm_flags;
0077     __u8 wids_enabled;
0078     __u16 wid_count;
0079     __u16 ldpm_limit_size;
0080     __u8 edpm_trans_size;
0081     __u8 reserved;
0082     __u16 edpm_limit_size;
0083     __u8 padding[6];
0084 };
0085
0086 struct qedr_alloc_pd_ureq {
0087     __aligned_u64 rsvd1;
0088 };
0089
0090 struct qedr_alloc_pd_uresp {
0091     __u32 pd_id;
0092     __u32 reserved;
0093 };
0094
0095 struct qedr_create_cq_ureq {
0096     __aligned_u64 addr;
0097     __aligned_u64 len;
0098 };
0099
0100 struct qedr_create_cq_uresp {
0101     __u32 db_offset;
0102     __u16 icid;
0103     __u16 reserved;
0104     __aligned_u64 db_rec_addr;
0105 };
0106
0107 struct qedr_create_qp_ureq {
0108     __u32 qp_handle_hi;
0109     __u32 qp_handle_lo;
0110
0111     /* SQ */
0112     /* user space virtual address of SQ buffer */
0113     __aligned_u64 sq_addr;
0114
0115     /* length of SQ buffer */
0116     __aligned_u64 sq_len;
0117
0118     /* RQ */
0119     /* user space virtual address of RQ buffer */
0120     __aligned_u64 rq_addr;
0121
0122     /* length of RQ buffer */
0123     __aligned_u64 rq_len;
0124 };
0125
0126 struct qedr_create_qp_uresp {
0127     __u32 qp_id;
0128     __u32 atomic_supported;
0129
0130     /* SQ */
0131     __u32 sq_db_offset;
0132     __u16 sq_icid;
0133
0134     /* RQ */
0135     __u32 rq_db_offset;
0136     __u16 rq_icid;
0137
0138     __u32 rq_db2_offset;
0139     __u32 reserved;
0140
0141     /* address of SQ doorbell recovery user entry */
0142     __aligned_u64 sq_db_rec_addr;
0143
0144     /* address of RQ doorbell recovery user entry */
0145     __aligned_u64 rq_db_rec_addr;
0146
0147 };
0148
0149 struct qedr_create_srq_ureq {
0150     /* user space virtual address of producer pair */
0151     __aligned_u64 prod_pair_addr;
0152
0153     /* user space virtual address of SRQ buffer */
0154     __aligned_u64 srq_addr;
0155
0156     /* length of SRQ buffer */
0157     __aligned_u64 srq_len;
0158 };
0159
0160 struct qedr_create_srq_uresp {
0161     __u16 srq_id;
0162     __u16 reserved0;
0163     __u32 reserved1;
0164 };
0165
0166 /* doorbell recovery entry allocated and populated by userspace doorbelling
0167  * entities and mapped to kernel. Kernel uses this to register doorbell
0168  * information with doorbell drop recovery mechanism.
0169  */
0170 struct qedr_user_db_rec {
0171     __aligned_u64 db_data; /* doorbell data */
0172 };
0173
0174 #endif /* __QEDR_USER_H__ */