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RDMA/bnxt_re: Add bnxt_re RoCE driver
This patch introduces the RoCE driver for the Broadcom NetXtreme-E 10/25/40/50G RoCE HCAs. The RoCE driver is a two part driver that relies on the parent bnxt_en NIC driver to operate. The changes needed in the bnxt_en driver have already been incorporated via Dave Miller's net tree into the mainline kernel. The vendor official git repository for this driver is available on github as: https://github.com/Broadcom/linux-rdma-nxt/ Signed-off-by: Eddie Wai <eddie.wai@broadcom.com> Signed-off-by: Devesh Sharma <devesh.sharma@broadcom.com> Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com> Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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| /* | ||
| * Broadcom NetXtreme-E RoCE driver. | ||
| * | ||
| * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term | ||
| * Broadcom refers to Broadcom Limited and/or its subsidiaries. | ||
| * | ||
| * 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 | ||
| * BSD license below: | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions | ||
| * are met: | ||
| * | ||
| * 1. Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * 2. 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. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' | ||
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | ||
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | ||
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS | ||
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | ||
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | ||
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE | ||
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN | ||
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| * | ||
| * Description: Slow Path Operators (header) | ||
| * | ||
| */ | ||
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| #ifndef __BNXT_RE_H__ | ||
| #define __BNXT_RE_H__ | ||
| #define ROCE_DRV_MODULE_NAME "bnxt_re" | ||
| #define ROCE_DRV_MODULE_VERSION "1.0.0" | ||
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| #define BNXT_RE_DESC "Broadcom NetXtreme-C/E RoCE Driver" | ||
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| #define BNXT_RE_PAGE_SIZE_4K BIT(12) | ||
| #define BNXT_RE_PAGE_SIZE_8K BIT(13) | ||
| #define BNXT_RE_PAGE_SIZE_64K BIT(16) | ||
| #define BNXT_RE_PAGE_SIZE_2M BIT(21) | ||
| #define BNXT_RE_PAGE_SIZE_8M BIT(23) | ||
| #define BNXT_RE_PAGE_SIZE_1G BIT(30) | ||
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| #define BNXT_RE_MAX_QPC_COUNT (64 * 1024) | ||
| #define BNXT_RE_MAX_MRW_COUNT (64 * 1024) | ||
| #define BNXT_RE_MAX_SRQC_COUNT (64 * 1024) | ||
| #define BNXT_RE_MAX_CQ_COUNT (64 * 1024) | ||
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| struct bnxt_re_work { | ||
| struct work_struct work; | ||
| unsigned long event; | ||
| struct bnxt_re_dev *rdev; | ||
| struct net_device *vlan_dev; | ||
| }; | ||
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| struct bnxt_re_sqp_entries { | ||
| struct bnxt_qplib_sge sge; | ||
| u64 wrid; | ||
| /* For storing the actual qp1 cqe */ | ||
| struct bnxt_qplib_cqe cqe; | ||
| struct bnxt_re_qp *qp1_qp; | ||
| }; | ||
|
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| #define BNXT_RE_MIN_MSIX 2 | ||
| #define BNXT_RE_MAX_MSIX 16 | ||
| #define BNXT_RE_AEQ_IDX 0 | ||
| #define BNXT_RE_NQ_IDX 1 | ||
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| struct bnxt_re_dev { | ||
| struct ib_device ibdev; | ||
| struct list_head list; | ||
| unsigned long flags; | ||
| #define BNXT_RE_FLAG_NETDEV_REGISTERED 0 | ||
| #define BNXT_RE_FLAG_IBDEV_REGISTERED 1 | ||
| #define BNXT_RE_FLAG_GOT_MSIX 2 | ||
| #define BNXT_RE_FLAG_RCFW_CHANNEL_EN 8 | ||
| #define BNXT_RE_FLAG_QOS_WORK_REG 16 | ||
| struct net_device *netdev; | ||
| unsigned int version, major, minor; | ||
| struct bnxt_en_dev *en_dev; | ||
| struct bnxt_msix_entry msix_entries[BNXT_RE_MAX_MSIX]; | ||
| int num_msix; | ||
|
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| int id; | ||
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| struct delayed_work worker; | ||
| u8 cur_prio_map; | ||
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| /* FP Notification Queue (CQ & SRQ) */ | ||
| struct tasklet_struct nq_task; | ||
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| /* RCFW Channel */ | ||
| struct bnxt_qplib_rcfw rcfw; | ||
|
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| /* NQ */ | ||
| struct bnxt_qplib_nq nq; | ||
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| /* Device Resources */ | ||
| struct bnxt_qplib_dev_attr dev_attr; | ||
| struct bnxt_qplib_ctx qplib_ctx; | ||
| struct bnxt_qplib_res qplib_res; | ||
| struct bnxt_qplib_dpi dpi_privileged; | ||
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| atomic_t qp_count; | ||
| struct mutex qp_lock; /* protect qp list */ | ||
| struct list_head qp_list; | ||
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| atomic_t cq_count; | ||
| atomic_t srq_count; | ||
| atomic_t mr_count; | ||
| atomic_t mw_count; | ||
| /* Max of 2 lossless traffic class supported per port */ | ||
| u16 cosq[2]; | ||
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| /* QP for for handling QP1 packets */ | ||
| u32 sqp_id; | ||
| struct bnxt_re_qp *qp1_sqp; | ||
| struct bnxt_re_ah *sqp_ah; | ||
| struct bnxt_re_sqp_entries sqp_tbl[1024]; | ||
| }; | ||
|
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| #define to_bnxt_re_dev(ptr, member) \ | ||
| container_of((ptr), struct bnxt_re_dev, member) | ||
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| #define BNXT_RE_ROCE_V1_PACKET 0 | ||
| #define BNXT_RE_ROCEV2_IPV4_PACKET 2 | ||
| #define BNXT_RE_ROCEV2_IPV6_PACKET 3 | ||
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| static inline struct device *rdev_to_dev(struct bnxt_re_dev *rdev) | ||
| { | ||
| if (rdev) | ||
| return &rdev->ibdev.dev; | ||
| return NULL; | ||
| } | ||
|
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| #endif |
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