linux/drivers/net/ethernet/chelsio/cxgb4/t4_values.h
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   1/*
   2 * This file is part of the Chelsio T4 Ethernet driver for Linux.
   3 *
   4 * Copyright (c) 2003-2014 Chelsio Communications, Inc. All rights reserved.
   5 *
   6 * This software is available to you under a choice of one of two
   7 * licenses.  You may choose to be licensed under the terms of the GNU
   8 * General Public License (GPL) Version 2, available from the file
   9 * COPYING in the main directory of this source tree, or the
  10 * OpenIB.org BSD license below:
  11 *
  12 *     Redistribution and use in source and binary forms, with or
  13 *     without modification, are permitted provided that the following
  14 *     conditions are met:
  15 *
  16 *      - Redistributions of source code must retain the above
  17 *        copyright notice, this list of conditions and the following
  18 *        disclaimer.
  19 *
  20 *      - Redistributions in binary form must reproduce the above
  21 *        copyright notice, this list of conditions and the following
  22 *        disclaimer in the documentation and/or other materials
  23 *        provided with the distribution.
  24 *
  25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32 * SOFTWARE.
  33 */
  34
  35#ifndef __T4_VALUES_H__
  36#define __T4_VALUES_H__
  37
  38/* This file contains definitions for various T4 register value hardware
  39 * constants.  The types of values encoded here are predominantly those for
  40 * register fields which control "modal" behavior.  For the most part, we do
  41 * not include definitions for register fields which are simple numeric
  42 * metrics, etc.
  43 */
  44
  45/* SGE register field values.
  46 */
  47
  48/* CONTROL1 register */
  49#define RXPKTCPLMODE_SPLIT_X            1
  50
  51#define INGPCIEBOUNDARY_SHIFT_X         5
  52#define INGPCIEBOUNDARY_32B_X           0
  53
  54#define INGPADBOUNDARY_SHIFT_X          5
  55
  56#define T6_INGPADBOUNDARY_SHIFT_X       3
  57#define T6_INGPADBOUNDARY_32B_X         2
  58
  59/* CONTROL2 register */
  60#define INGPACKBOUNDARY_SHIFT_X         5
  61#define INGPACKBOUNDARY_16B_X           0
  62
  63/* GTS register */
  64#define SGE_TIMERREGS                   6
  65#define TIMERREG_COUNTER0_X             0
  66
  67#define FETCHBURSTMIN_64B_X             2
  68#define FETCHBURSTMIN_128B_X            3
  69
  70#define FETCHBURSTMAX_256B_X            2
  71#define FETCHBURSTMAX_512B_X            3
  72
  73#define HOSTFCMODE_STATUS_PAGE_X        2
  74
  75#define CIDXFLUSHTHRESH_32_X            5
  76
  77#define UPDATEDELIVERY_INTERRUPT_X      1
  78
  79#define RSPD_TYPE_FLBUF_X               0
  80#define RSPD_TYPE_CPL_X                 1
  81#define RSPD_TYPE_INTR_X                2
  82
  83/* Congestion Manager Definitions.
  84 */
  85#define CONMCTXT_CNGTPMODE_S            19
  86#define CONMCTXT_CNGTPMODE_V(x)         ((x) << CONMCTXT_CNGTPMODE_S)
  87#define CONMCTXT_CNGCHMAP_S             0
  88#define CONMCTXT_CNGCHMAP_V(x)          ((x) << CONMCTXT_CNGCHMAP_S)
  89#define CONMCTXT_CNGTPMODE_CHANNEL_X    2
  90#define CONMCTXT_CNGTPMODE_QUEUE_X      1
  91
  92/* T5 and later support a new BAR2-based doorbell mechanism for Egress Queues.
  93 * The User Doorbells are each 128 bytes in length with a Simple Doorbell at
  94 * offsets 8x and a Write Combining single 64-byte Egress Queue Unit
  95 * (IDXSIZE_UNIT_X) Gather Buffer interface at offset 64.  For Ingress Queues,
  96 * we have a Going To Sleep register at offsets 8x+4.
  97 *
  98 * As noted above, we have many instances of the Simple Doorbell and Going To
  99 * Sleep registers at offsets 8x and 8x+4, respectively.  We want to use a
 100 * non-64-byte aligned offset for the Simple Doorbell in order to attempt to
 101 * avoid buffering of the writes to the Simple Doorbell and we want to use a
 102 * non-contiguous offset for the Going To Sleep writes in order to avoid
 103 * possible combining between them.
 104 */
 105#define SGE_UDB_SIZE            128
 106#define SGE_UDB_KDOORBELL       8
 107#define SGE_UDB_GTS             20
 108#define SGE_UDB_WCDOORBELL      64
 109
 110/* CIM register field values.
 111 */
 112#define X_MBOWNER_FW                    1
 113#define X_MBOWNER_PL                    2
 114
 115/* PCI-E definitions */
 116#define WINDOW_SHIFT_X          10
 117#define PCIEOFST_SHIFT_X        10
 118
 119/* TP_VLAN_PRI_MAP controls which subset of fields will be present in the
 120 * Compressed Filter Tuple for LE filters.  Each bit set in TP_VLAN_PRI_MAP
 121 * selects for a particular field being present.  These fields, when present
 122 * in the Compressed Filter Tuple, have the following widths in bits.
 123 */
 124#define FT_FCOE_W                       1
 125#define FT_PORT_W                       3
 126#define FT_VNIC_ID_W                    17
 127#define FT_VLAN_W                       17
 128#define FT_TOS_W                        8
 129#define FT_PROTOCOL_W                   8
 130#define FT_ETHERTYPE_W                  16
 131#define FT_MACMATCH_W                   9
 132#define FT_MPSHITTYPE_W                 3
 133#define FT_FRAGMENTATION_W              1
 134
 135/* Some of the Compressed Filter Tuple fields have internal structure.  These
 136 * bit shifts/masks describe those structures.  All shifts are relative to the
 137 * base position of the fields within the Compressed Filter Tuple
 138 */
 139#define FT_VLAN_VLD_S                   16
 140#define FT_VLAN_VLD_V(x)                ((x) << FT_VLAN_VLD_S)
 141#define FT_VLAN_VLD_F                   FT_VLAN_VLD_V(1U)
 142
 143#define FT_VNID_ID_VF_S                 0
 144#define FT_VNID_ID_VF_V(x)              ((x) << FT_VNID_ID_VF_S)
 145
 146#define FT_VNID_ID_PF_S                 7
 147#define FT_VNID_ID_PF_V(x)              ((x) << FT_VNID_ID_PF_S)
 148
 149#define FT_VNID_ID_VLD_S                16
 150#define FT_VNID_ID_VLD_V(x)             ((x) << FT_VNID_ID_VLD_S)
 151
 152#endif /* __T4_VALUES_H__ */
 153