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__ */