eb7f84e379
User space should receive the maximum edpm size from kernel driver,
similar to other edpm/ldpm related limits. Add an additional parameter to
the alloc_ucontext_resp structure for the edpm maximum size.
In addition, pass an indication from user-space to kernel
(and not just kernel to user) that the DPM sizes are supported.
This is for supporting backward-forward compatibility between driver and
lib for everything related to DPM transaction and limit sizes.
This should have been part of commit mentioned in Fixes tag.
Link: https://lore.kernel.org/r/20200707063100.3811-3-michal.kalderon@marvell.com
Fixes: 93a3d05f9d ("RDMA/qedr: Add kernel capability flags for dpm enabled mode")
Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
175 lines
4.2 KiB
C
175 lines
4.2 KiB
C
/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR Linux-OpenIB) */
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/* QLogic qedr NIC Driver
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* Copyright (c) 2015-2016 QLogic Corporation
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and /or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __QEDR_USER_H__
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#define __QEDR_USER_H__
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#include <linux/types.h>
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#define QEDR_ABI_VERSION (8)
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/* user kernel communication data structures. */
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enum qedr_alloc_ucontext_flags {
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QEDR_ALLOC_UCTX_EDPM_MODE = 1 << 0,
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QEDR_ALLOC_UCTX_DB_REC = 1 << 1,
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QEDR_SUPPORT_DPM_SIZES = 1 << 2,
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};
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struct qedr_alloc_ucontext_req {
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__u32 context_flags;
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__u32 reserved;
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};
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#define QEDR_LDPM_MAX_SIZE (8192)
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#define QEDR_EDPM_TRANS_SIZE (64)
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#define QEDR_EDPM_MAX_SIZE (ROCE_REQ_MAX_INLINE_DATA_SIZE)
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enum qedr_rdma_dpm_type {
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QEDR_DPM_TYPE_NONE = 0,
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QEDR_DPM_TYPE_ROCE_ENHANCED = 1 << 0,
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QEDR_DPM_TYPE_ROCE_LEGACY = 1 << 1,
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QEDR_DPM_TYPE_IWARP_LEGACY = 1 << 2,
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QEDR_DPM_TYPE_ROCE_EDPM_MODE = 1 << 3,
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QEDR_DPM_SIZES_SET = 1 << 4,
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};
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struct qedr_alloc_ucontext_resp {
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__aligned_u64 db_pa;
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__u32 db_size;
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__u32 max_send_wr;
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__u32 max_recv_wr;
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__u32 max_srq_wr;
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__u32 sges_per_send_wr;
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__u32 sges_per_recv_wr;
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__u32 sges_per_srq_wr;
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__u32 max_cqes;
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__u8 dpm_flags;
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__u8 wids_enabled;
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__u16 wid_count;
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__u16 ldpm_limit_size;
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__u8 edpm_trans_size;
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__u8 reserved;
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__u16 edpm_limit_size;
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__u8 padding[6];
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};
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struct qedr_alloc_pd_ureq {
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__aligned_u64 rsvd1;
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};
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struct qedr_alloc_pd_uresp {
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__u32 pd_id;
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__u32 reserved;
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};
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struct qedr_create_cq_ureq {
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__aligned_u64 addr;
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__aligned_u64 len;
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};
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struct qedr_create_cq_uresp {
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__u32 db_offset;
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__u16 icid;
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__u16 reserved;
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__aligned_u64 db_rec_addr;
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};
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struct qedr_create_qp_ureq {
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__u32 qp_handle_hi;
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__u32 qp_handle_lo;
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/* SQ */
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/* user space virtual address of SQ buffer */
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__aligned_u64 sq_addr;
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/* length of SQ buffer */
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__aligned_u64 sq_len;
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/* RQ */
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/* user space virtual address of RQ buffer */
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__aligned_u64 rq_addr;
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/* length of RQ buffer */
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__aligned_u64 rq_len;
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};
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struct qedr_create_qp_uresp {
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__u32 qp_id;
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__u32 atomic_supported;
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/* SQ */
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__u32 sq_db_offset;
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__u16 sq_icid;
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/* RQ */
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__u32 rq_db_offset;
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__u16 rq_icid;
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__u32 rq_db2_offset;
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__u32 reserved;
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/* address of SQ doorbell recovery user entry */
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__aligned_u64 sq_db_rec_addr;
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/* address of RQ doorbell recovery user entry */
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__aligned_u64 rq_db_rec_addr;
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};
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struct qedr_create_srq_ureq {
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/* user space virtual address of producer pair */
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__aligned_u64 prod_pair_addr;
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/* user space virtual address of SRQ buffer */
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__aligned_u64 srq_addr;
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/* length of SRQ buffer */
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__aligned_u64 srq_len;
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};
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struct qedr_create_srq_uresp {
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__u16 srq_id;
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__u16 reserved0;
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__u32 reserved1;
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};
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/* doorbell recovery entry allocated and populated by userspace doorbelling
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* entities and mapped to kernel. Kernel uses this to register doorbell
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* information with doorbell drop recovery mechanism.
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*/
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struct qedr_user_db_rec {
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__aligned_u64 db_data; /* doorbell data */
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};
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#endif /* __QEDR_USER_H__ */
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