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/
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| 1 | +/* | |
| 2 | + * Broadcom NetXtreme-E RoCE driver. | |
| 3 | + * | |
| 4 | + * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term | |
| 5 | + * Broadcom refers to Broadcom Limited and/or its subsidiaries. | |
| 6 | + * | |
| 7 | + * This software is available to you under a choice of one of two | |
| 8 | + * licenses. You may choose to be licensed under the terms of the GNU | |
| 9 | + * General Public License (GPL) Version 2, available from the file | |
| 10 | + * COPYING in the main directory of this source tree, or the | |
| 11 | + * BSD license below: | |
| 12 | + * | |
| 13 | + * Redistribution and use in source and binary forms, with or without | |
| 14 | + * modification, are permitted provided that the following conditions | |
| 15 | + * are met: | |
| 16 | + * | |
| 17 | + * 1. Redistributions of source code must retain the above copyright | |
| 18 | + * notice, this list of conditions and the following disclaimer. | |
| 19 | + * 2. Redistributions in binary form must reproduce the above copyright | |
| 20 | + * notice, this list of conditions and the following disclaimer in | |
| 21 | + * the documentation and/or other materials provided with the | |
| 22 | + * distribution. | |
| 23 | + * | |
| 24 | + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' | |
| 25 | + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
| 26 | + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 27 | + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS | |
| 28 | + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 29 | + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 30 | + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
| 31 | + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
| 32 | + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE | |
| 33 | + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN | |
| 34 | + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 35 | + * | |
| 36 | + * Description: Uverbs ABI header file | |
| 37 | + */ | |
| 38 | + | |
| 39 | +#ifndef __BNXT_RE_UVERBS_ABI_H__ | |
| 40 | +#define __BNXT_RE_UVERBS_ABI_H__ | |
| 41 | + | |
| 42 | +#define BNXT_RE_ABI_VERSION 1 | |
| 43 | + | |
| 44 | +struct bnxt_re_uctx_resp { | |
| 45 | + __u32 dev_id; | |
| 46 | + __u32 max_qp; | |
| 47 | + __u32 pg_size; | |
| 48 | + __u32 cqe_sz; | |
| 49 | + __u32 max_cqd; | |
| 50 | + __u32 rsvd; | |
| 51 | +}; | |
| 52 | + | |
| 53 | +struct bnxt_re_pd_resp { | |
| 54 | + __u32 pdid; | |
| 55 | + __u32 dpi; | |
| 56 | + __u64 dbr; | |
| 57 | +}; | |
| 58 | + | |
| 59 | +struct bnxt_re_cq_req { | |
| 60 | + __u64 cq_va; | |
| 61 | + __u64 cq_handle; | |
| 62 | +}; | |
| 63 | + | |
| 64 | +struct bnxt_re_cq_resp { | |
| 65 | + __u32 cqid; | |
| 66 | + __u32 tail; | |
| 67 | + __u32 phase; | |
| 68 | + __u32 rsvd; | |
| 69 | +}; | |
| 70 | + | |
| 71 | +struct bnxt_re_qp_req { | |
| 72 | + __u64 qpsva; | |
| 73 | + __u64 qprva; | |
| 74 | + __u64 qp_handle; | |
| 75 | +}; | |
| 76 | + | |
| 77 | +struct bnxt_re_qp_resp { | |
| 78 | + __u32 qpid; | |
| 79 | + __u32 rsvd; | |
| 80 | +}; | |
| 81 | + | |
| 82 | +enum bnxt_re_shpg_offt { | |
| 83 | + BNXT_RE_BEG_RESV_OFFT = 0x00, | |
| 84 | + BNXT_RE_AVID_OFFT = 0x10, | |
| 85 | + BNXT_RE_AVID_SIZE = 0x04, | |
| 86 | + BNXT_RE_END_RESV_OFFT = 0xFF0 | |
| 87 | +}; | |
| 88 | + | |
| 89 | +#endif /* __BNXT_RE_UVERBS_ABI_H__*/ | |