drivers/net/ethernet/chelsio/cxgb4/t4_values.h

   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_8B_X          0
  58 #define T6_INGPADBOUNDARY_32B_X         2
  59
  60 #define INGPADBOUNDARY_32B_X            0
  61
  62 /* CONTROL2 register */
  63 #define INGPACKBOUNDARY_SHIFT_X         5
  64 #define INGPACKBOUNDARY_16B_X           0
  65 #define INGPACKBOUNDARY_64B_X           1
  66
  67 /* GTS register */
  68 #define SGE_TIMERREGS                   6
  69 #define TIMERREG_COUNTER0_X             0
  70
  71 #define FETCHBURSTMIN_64B_X             2
  72 #define FETCHBURSTMIN_128B_X            3
  73
  74 /* T6 and later use a single-bit encoding for FetchBurstMin */
  75 #define FETCHBURSTMIN_64B_T6_X          0
  76 #define FETCHBURSTMIN_128B_T6_X         1
  77
  78 #define FETCHBURSTMAX_256B_X            2
  79 #define FETCHBURSTMAX_512B_X            3
  80
  81 #define HOSTFCMODE_INGRESS_QUEUE_X      1
  82 #define HOSTFCMODE_STATUS_PAGE_X        2
  83
  84 #define CIDXFLUSHTHRESH_32_X            5
  85 #define CIDXFLUSHTHRESH_128_X           7
  86
  87 #define UPDATEDELIVERY_INTERRUPT_X      1
  88
  89 #define RSPD_TYPE_FLBUF_X               0
  90 #define RSPD_TYPE_CPL_X                 1
  91 #define RSPD_TYPE_INTR_X                2
  92
  93 /* Congestion Manager Definitions.
  94  */
  95 #define CONMCTXT_CNGTPMODE_S            19
  96 #define CONMCTXT_CNGTPMODE_V(x)         ((x) << CONMCTXT_CNGTPMODE_S)
  97 #define CONMCTXT_CNGCHMAP_S             0
  98 #define CONMCTXT_CNGCHMAP_V(x)          ((x) << CONMCTXT_CNGCHMAP_S)
  99 #define CONMCTXT_CNGTPMODE_CHANNEL_X    2
 100 #define CONMCTXT_CNGTPMODE_QUEUE_X      1
 101
 102 /* T5 and later support a new BAR2-based doorbell mechanism for Egress Queues.
 103  * The User Doorbells are each 128 bytes in length with a Simple Doorbell at
 104  * offsets 8x and a Write Combining single 64-byte Egress Queue Unit
 105  * (IDXSIZE_UNIT_X) Gather Buffer interface at offset 64.  For Ingress Queues,
 106  * we have a Going To Sleep register at offsets 8x+4.
 107  *
 108  * As noted above, we have many instances of the Simple Doorbell and Going To
 109  * Sleep registers at offsets 8x and 8x+4, respectively.  We want to use a
 110  * non-64-byte aligned offset for the Simple Doorbell in order to attempt to
 111  * avoid buffering of the writes to the Simple Doorbell and we want to use a
 112  * non-contiguous offset for the Going To Sleep writes in order to avoid
 113  * possible combining between them.
 114  */
 115 #define SGE_UDB_SIZE            128
 116 #define SGE_UDB_KDOORBELL       8
 117 #define SGE_UDB_GTS             20
 118 #define SGE_UDB_WCDOORBELL      64
 119
 120 /* CIM register field values.
 121  */
 122 #define X_MBOWNER_FW                    1
 123 #define X_MBOWNER_PL                    2
 124
 125 /* PCI-E definitions */
 126 #define WINDOW_SHIFT_X          10
 127 #define PCIEOFST_SHIFT_X        10
 128
 129 /* TP_VLAN_PRI_MAP controls which subset of fields will be present in the
 130  * Compressed Filter Tuple for LE filters.  Each bit set in TP_VLAN_PRI_MAP
 131  * selects for a particular field being present.  These fields, when present
 132  * in the Compressed Filter Tuple, have the following widths in bits.
 133  */
 134 #define FT_FCOE_W                       1
 135 #define FT_PORT_W                       3
 136 #define FT_VNIC_ID_W                    17
 137 #define FT_VLAN_W                       17
 138 #define FT_TOS_W                        8
 139 #define FT_PROTOCOL_W                   8
 140 #define FT_ETHERTYPE_W                  16
 141 #define FT_MACMATCH_W                   9
 142 #define FT_MPSHITTYPE_W                 3
 143 #define FT_FRAGMENTATION_W              1
 144
 145 /* Some of the Compressed Filter Tuple fields have internal structure.  These
 146  * bit shifts/masks describe those structures.  All shifts are relative to the
 147  * base position of the fields within the Compressed Filter Tuple
 148  */
 149 #define FT_VLAN_VLD_S                   16
 150 #define FT_VLAN_VLD_V(x)                ((x) << FT_VLAN_VLD_S)
 151 #define FT_VLAN_VLD_F                   FT_VLAN_VLD_V(1U)
 152
 153 #define FT_VNID_ID_VF_S                 0
 154 #define FT_VNID_ID_VF_V(x)              ((x) << FT_VNID_ID_VF_S)
 155
 156 #define FT_VNID_ID_PF_S                 7
 157 #define FT_VNID_ID_PF_V(x)              ((x) << FT_VNID_ID_PF_S)
 158
 159 #define FT_VNID_ID_VLD_S                16
 160 #define FT_VNID_ID_VLD_V(x)             ((x) << FT_VNID_ID_VLD_S)
 161
 162 #endif /* __T4_VALUES_H__ */