144 lines
4.4 KiB
C
144 lines
4.4 KiB
C
/* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
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/*
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* Copyright (C) 2018 Netronome Systems, Inc.
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*
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* This software is dual licensed under the GNU General License Version 2,
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* June 1991 as shown in the file COPYING in the top-level directory of this
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* source tree or the BSD 2-Clause License provided below. You have the
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* option to license this software under the complete terms of either license.
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*
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* The BSD 2-Clause License:
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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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* 1. 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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* 2. 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 __NFP_ABI__
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#define __NFP_ABI__ 1
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#include <linux/types.h>
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#define NFP_MBOX_SYM_NAME "_abi_nfd_pf%u_mbox"
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#define NFP_MBOX_SYM_MIN_SIZE 16 /* When no data needed */
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#define NFP_MBOX_CMD 0x00
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#define NFP_MBOX_RET 0x04
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#define NFP_MBOX_DATA_LEN 0x08
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#define NFP_MBOX_RESERVED 0x0c
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#define NFP_MBOX_DATA 0x10
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/**
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* enum nfp_mbox_cmd - PF mailbox commands
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*
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* @NFP_MBOX_NO_CMD: null command
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* Used to indicate previous command has finished.
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*
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* @NFP_MBOX_POOL_GET: get shared buffer pool info/config
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* Input - struct nfp_shared_buf_pool_id
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* Output - struct nfp_shared_buf_pool_info_get
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*
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* @NFP_MBOX_POOL_SET: set shared buffer pool info/config
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* Input - struct nfp_shared_buf_pool_info_set
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* Output - None
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*
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* @NFP_MBOX_PCIE_ABM_ENABLE: enable PCIe-side advanced buffer management
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* Enable advanced buffer management of the PCIe block. If ABM is disabled
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* PCIe block maintains a very short queue of buffers and does tail drop.
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* ABM allows more advanced buffering and priority control.
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* Input - None
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* Output - None
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*
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* @NFP_MBOX_PCIE_ABM_DISABLE: disable PCIe-side advanced buffer management
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* Input - None
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* Output - None
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*/
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enum nfp_mbox_cmd {
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NFP_MBOX_NO_CMD = 0x00,
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NFP_MBOX_POOL_GET = 0x01,
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NFP_MBOX_POOL_SET = 0x02,
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NFP_MBOX_PCIE_ABM_ENABLE = 0x03,
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NFP_MBOX_PCIE_ABM_DISABLE = 0x04,
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};
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#define NFP_SHARED_BUF_COUNT_SYM_NAME "_abi_nfd_pf%u_sb_cnt"
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#define NFP_SHARED_BUF_TABLE_SYM_NAME "_abi_nfd_pf%u_sb_tbl"
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/**
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* struct nfp_shared_buf - NFP shared buffer description
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* @id: numerical user-visible id of the shared buffer
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* @size: size in bytes of the buffer
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* @ingress_pools_count: number of ingress pools
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* @egress_pools_count: number of egress pools
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* @ingress_tc_count: number of ingress trafic classes
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* @egress_tc_count: number of egress trafic classes
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* @pool_size_unit: pool size may be in credits, each credit is
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* @pool_size_unit bytes
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*/
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struct nfp_shared_buf {
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__le32 id;
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__le32 size;
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__le16 ingress_pools_count;
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__le16 egress_pools_count;
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__le16 ingress_tc_count;
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__le16 egress_tc_count;
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__le32 pool_size_unit;
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};
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/**
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* struct nfp_shared_buf_pool_id - shared buffer pool identification
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* @shared_buf: shared buffer id
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* @pool: pool index
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*/
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struct nfp_shared_buf_pool_id {
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__le32 shared_buf;
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__le32 pool;
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};
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/**
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* struct nfp_shared_buf_pool_info_get - struct devlink_sb_pool_info mirror
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* @pool_type: one of enum devlink_sb_pool_type
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* @size: pool size in units of SB's @pool_size_unit
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* @threshold_type: one of enum devlink_sb_threshold_type
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*/
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struct nfp_shared_buf_pool_info_get {
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__le32 pool_type;
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__le32 size;
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__le32 threshold_type;
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};
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/**
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* struct nfp_shared_buf_pool_info_set - packed args of sb_pool_set
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* @id: pool identification info
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* @size: pool size in units of SB's @pool_size_unit
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* @threshold_type: one of enum devlink_sb_threshold_type
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*/
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struct nfp_shared_buf_pool_info_set {
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struct nfp_shared_buf_pool_id id;
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__le32 size;
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__le32 threshold_type;
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};
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#endif
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