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/* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
/*
* Copyright (C) 2018 Netronome Systems, Inc.
*
* This software is dual licensed under the GNU General License Version 2,
* June 1991 as shown in the file COPYING in the top-level directory of this
* source tree or the BSD 2-Clause License provided below. You have the
* option to license this software under the complete terms of either license.
*
* The BSD 2-Clause License:
*
* 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __NFP_ABI__
#define __NFP_ABI__ 1
#include <linux/types.h>
#define NFP_MBOX_SYM_NAME "_abi_nfd_pf%u_mbox"
#define NFP_MBOX_SYM_MIN_SIZE 16 /* When no data needed */
#define NFP_MBOX_CMD 0x00
#define NFP_MBOX_RET 0x04
#define NFP_MBOX_DATA_LEN 0x08
#define NFP_MBOX_RESERVED 0x0c
#define NFP_MBOX_DATA 0x10
/**
* enum nfp_mbox_cmd - PF mailbox commands
*
* @NFP_MBOX_NO_CMD: null command
* Used to indicate previous command has finished.
*
* @NFP_MBOX_POOL_GET: get shared buffer pool info/config
* Input - struct nfp_shared_buf_pool_id
* Output - struct nfp_shared_buf_pool_info_get
*
* @NFP_MBOX_POOL_SET: set shared buffer pool info/config
* Input - struct nfp_shared_buf_pool_info_set
* Output - None
*
* @NFP_MBOX_PCIE_ABM_ENABLE: enable PCIe-side advanced buffer management
* Enable advanced buffer management of the PCIe block. If ABM is disabled
* PCIe block maintains a very short queue of buffers and does tail drop.
* ABM allows more advanced buffering and priority control.
* Input - None
* Output - None
*
* @NFP_MBOX_PCIE_ABM_DISABLE: disable PCIe-side advanced buffer management
* Input - None
* Output - None
*/
enum nfp_mbox_cmd {
NFP_MBOX_NO_CMD = 0x00,
NFP_MBOX_POOL_GET = 0x01,
NFP_MBOX_POOL_SET = 0x02,
NFP_MBOX_PCIE_ABM_ENABLE = 0x03,
NFP_MBOX_PCIE_ABM_DISABLE = 0x04,
};
#define NFP_SHARED_BUF_COUNT_SYM_NAME "_abi_nfd_pf%u_sb_cnt"
#define NFP_SHARED_BUF_TABLE_SYM_NAME "_abi_nfd_pf%u_sb_tbl"
/**
* struct nfp_shared_buf - NFP shared buffer description
* @id: numerical user-visible id of the shared buffer
* @size: size in bytes of the buffer
* @ingress_pools_count: number of ingress pools
* @egress_pools_count: number of egress pools
* @ingress_tc_count: number of ingress trafic classes
* @egress_tc_count: number of egress trafic classes
* @pool_size_unit: pool size may be in credits, each credit is
* @pool_size_unit bytes
*/
struct nfp_shared_buf {
__le32 id;
__le32 size;
__le16 ingress_pools_count;
__le16 egress_pools_count;
__le16 ingress_tc_count;
__le16 egress_tc_count;
__le32 pool_size_unit;
};
/**
* struct nfp_shared_buf_pool_id - shared buffer pool identification
* @shared_buf: shared buffer id
* @pool: pool index
*/
struct nfp_shared_buf_pool_id {
__le32 shared_buf;
__le32 pool;
};
/**
* struct nfp_shared_buf_pool_info_get - struct devlink_sb_pool_info mirror
* @pool_type: one of enum devlink_sb_pool_type
* @size: pool size in units of SB's @pool_size_unit
* @threshold_type: one of enum devlink_sb_threshold_type
*/
struct nfp_shared_buf_pool_info_get {
__le32 pool_type;
__le32 size;
__le32 threshold_type;
};
/**
* struct nfp_shared_buf_pool_info_set - packed args of sb_pool_set
* @id: pool identification info
* @size: pool size in units of SB's @pool_size_unit
* @threshold_type: one of enum devlink_sb_threshold_type
*/
struct nfp_shared_buf_pool_info_set {
struct nfp_shared_buf_pool_id id;
__le32 size;
__le32 threshold_type;
};
#endif
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