xref: /linux/drivers/net/ethernet/chelsio/cxgb4/t4_values.h (revision 597473720f4dc69749542bfcfed4a927a43d935e)
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__ */
163