LXR linux/drivers/net/ethernet/netronome/nfp/nfp

   1/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
   2/* Copyright (C) 2018 Netronome Systems, Inc. */
   3
   4#ifndef __NFP_ABI__
   5#define __NFP_ABI__ 1
   6
   7#include <linux/types.h>
   8
   9#define NFP_MBOX_SYM_NAME               "_abi_nfd_pf%u_mbox"
  10#define NFP_MBOX_SYM_MIN_SIZE           16 /* When no data needed */
  11
  12#define NFP_MBOX_CMD            0x00
  13#define NFP_MBOX_RET            0x04
  14#define NFP_MBOX_DATA_LEN       0x08
  15#define NFP_MBOX_RESERVED       0x0c
  16#define NFP_MBOX_DATA           0x10
  17
  18/**
  19 * enum nfp_mbox_cmd - PF mailbox commands
  20 *
  21 * @NFP_MBOX_NO_CMD:    null command
  22 * Used to indicate previous command has finished.
  23 *
  24 * @NFP_MBOX_POOL_GET:  get shared buffer pool info/config
  25 * Input  - struct nfp_shared_buf_pool_id
  26 * Output - struct nfp_shared_buf_pool_info_get
  27 *
  28 * @NFP_MBOX_POOL_SET:  set shared buffer pool info/config
  29 * Input  - struct nfp_shared_buf_pool_info_set
  30 * Output - None
  31 *
  32 * @NFP_MBOX_PCIE_ABM_ENABLE:   enable PCIe-side advanced buffer management
  33 * Enable advanced buffer management of the PCIe block.  If ABM is disabled
  34 * PCIe block maintains a very short queue of buffers and does tail drop.
  35 * ABM allows more advanced buffering and priority control.
  36 * Input  - None
  37 * Output - None
  38 *
  39 * @NFP_MBOX_PCIE_ABM_DISABLE:  disable PCIe-side advanced buffer management
  40 * Input  - None
  41 * Output - None
  42 */
  43enum nfp_mbox_cmd {
  44        NFP_MBOX_NO_CMD                 = 0x00,
  45
  46        NFP_MBOX_POOL_GET               = 0x01,
  47        NFP_MBOX_POOL_SET               = 0x02,
  48
  49        NFP_MBOX_PCIE_ABM_ENABLE        = 0x03,
  50        NFP_MBOX_PCIE_ABM_DISABLE       = 0x04,
  51};
  52
  53#define NFP_SHARED_BUF_COUNT_SYM_NAME   "_abi_nfd_pf%u_sb_cnt"
  54#define NFP_SHARED_BUF_TABLE_SYM_NAME   "_abi_nfd_pf%u_sb_tbl"
  55
  56/**
  57 * struct nfp_shared_buf - NFP shared buffer description
  58 * @id:                         numerical user-visible id of the shared buffer
  59 * @size:                       size in bytes of the buffer
  60 * @ingress_pools_count:        number of ingress pools
  61 * @egress_pools_count:         number of egress pools
  62 * @ingress_tc_count:           number of ingress trafic classes
  63 * @egress_tc_count:            number of egress trafic classes
  64 * @pool_size_unit:             pool size may be in credits, each credit is
  65 *                              @pool_size_unit bytes
  66 */
  67struct nfp_shared_buf {
  68        __le32 id;
  69        __le32 size;
  70        __le16 ingress_pools_count;
  71        __le16 egress_pools_count;
  72        __le16 ingress_tc_count;
  73        __le16 egress_tc_count;
  74
  75        __le32 pool_size_unit;
  76};
  77
  78/**
  79 * struct nfp_shared_buf_pool_id - shared buffer pool identification
  80 * @shared_buf:         shared buffer id
  81 * @pool:               pool index
  82 */
  83struct nfp_shared_buf_pool_id {
  84        __le32 shared_buf;
  85        __le32 pool;
  86};
  87
  88/**
  89 * struct nfp_shared_buf_pool_info_get - struct devlink_sb_pool_info mirror
  90 * @pool_type:          one of enum devlink_sb_pool_type
  91 * @size:               pool size in units of SB's @pool_size_unit
  92 * @threshold_type:     one of enum devlink_sb_threshold_type
  93 */
  94struct nfp_shared_buf_pool_info_get {
  95        __le32 pool_type;
  96        __le32 size;
  97        __le32 threshold_type;
  98};
  99
 100/**
 101 * struct nfp_shared_buf_pool_info_set - packed args of sb_pool_set
 102 * @id:                 pool identification info
 103 * @size:               pool size in units of SB's @pool_size_unit
 104 * @threshold_type:     one of enum devlink_sb_threshold_type
 105 */
 106struct nfp_shared_buf_pool_info_set {
 107        struct nfp_shared_buf_pool_id id;
 108        __le32 size;
 109        __le32 threshold_type;
 110};
 111
 112#endif
 113