1 /*
2  * This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet
3  * driver for Linux.
4  *
5  * Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved.
6  *
7  * This software is available to you under a choice of one of two
8  * licenses.  You may choose to be licensed under the terms of the GNU
9  * General Public License (GPL) Version 2, available from the file
10  * COPYING in the main directory of this source tree, or the
11  * OpenIB.org BSD license below:
12  *
13  *     Redistribution and use in source and binary forms, with or
14  *     without modification, are permitted provided that the following
15  *     conditions are met:
16  *
17  *      - Redistributions of source code must retain the above
18  *        copyright notice, this list of conditions and the following
19  *        disclaimer.
20  *
21  *      - Redistributions in binary form must reproduce the above
22  *        copyright notice, this list of conditions and the following
23  *        disclaimer in the documentation and/or other materials
24  *        provided with the distribution.
25  *
26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33  * SOFTWARE.
34  */
35 
36 #ifndef __T4VF_DEFS_H__
37 #define __T4VF_DEFS_H__
38 
39 #include "../cxgb4/t4_regs.h"
40 
41 /*
42  * The VF Register Map.
43  *
44  * The Scatter Gather Engine (SGE), Multiport Support module (MPS), PIO Local
45  * bus module (PL) and CPU Interface Module (CIM) components are mapped via
46  * the Slice to Module Map Table (see below) in the Physical Function Register
47  * Map.  The Mail Box Data (MBDATA) range is mapped via the PCI-E Mailbox Base
48  * and Offset registers in the PF Register Map.  The MBDATA base address is
49  * quite constrained as it determines the Mailbox Data addresses for both PFs
50  * and VFs, and therefore must fit in both the VF and PF Register Maps without
51  * overlapping other registers.
52  */
53 #define T4VF_SGE_BASE_ADDR	0x0000
54 #define T4VF_MPS_BASE_ADDR	0x0100
55 #define T4VF_PL_BASE_ADDR	0x0200
56 #define T4VF_MBDATA_BASE_ADDR	0x0240
57 #define T6VF_MBDATA_BASE_ADDR	0x0280
58 #define T4VF_CIM_BASE_ADDR	0x0300
59 
60 #define T4VF_REGMAP_START	0x0000
61 #define T4VF_REGMAP_SIZE	0x0400
62 
63 /*
64  * There's no hardware limitation which requires that the addresses of the
65  * Mailbox Data in the fixed CIM PF map and the programmable VF map must
66  * match.  However, it's a useful convention ...
67  */
68 #if T4VF_MBDATA_BASE_ADDR != CIM_PF_MAILBOX_DATA_A
69 #error T4VF_MBDATA_BASE_ADDR must match CIM_PF_MAILBOX_DATA_A!
70 #endif
71 
72 /*
73  * Virtual Function "Slice to Module Map Table" definitions.
74  *
75  * This table allows us to map subsets of the various module register sets
76  * into the T4VF Register Map.  Each table entry identifies the index of the
77  * module whose registers are being mapped, the offset within the module's
78  * register set that the mapping should start at, the limit of the mapping,
79  * and the offset within the T4VF Register Map to which the module's registers
80  * are being mapped.  All addresses and qualtities are in terms of 32-bit
81  * words.  The "limit" value is also in terms of 32-bit words and is equal to
82  * the last address mapped in the T4VF Register Map 1 (i.e. it's a "<="
83  * relation rather than a "<").
84  */
85 #define T4VF_MOD_MAP(module, index, first, last) \
86 	T4VF_MOD_MAP_##module##_INDEX  = (index), \
87 	T4VF_MOD_MAP_##module##_FIRST  = (first), \
88 	T4VF_MOD_MAP_##module##_LAST   = (last), \
89 	T4VF_MOD_MAP_##module##_OFFSET = ((first)/4), \
90 	T4VF_MOD_MAP_##module##_BASE = \
91 		(T4VF_##module##_BASE_ADDR/4 + (first)/4), \
92 	T4VF_MOD_MAP_##module##_LIMIT = \
93 		(T4VF_##module##_BASE_ADDR/4 + (last)/4),
94 
95 #define SGE_VF_KDOORBELL 0x0
96 #define SGE_VF_GTS 0x4
97 #define MPS_VF_CTL 0x0
98 #define MPS_VF_STAT_RX_VF_ERR_FRAMES_H 0xfc
99 #define PL_VF_WHOAMI 0x0
100 #define CIM_VF_EXT_MAILBOX_CTRL 0x0
101 #define CIM_VF_EXT_MAILBOX_STATUS 0x4
102 
103 enum {
104     T4VF_MOD_MAP(SGE, 2, SGE_VF_KDOORBELL, SGE_VF_GTS)
105     T4VF_MOD_MAP(MPS, 0, MPS_VF_CTL, MPS_VF_STAT_RX_VF_ERR_FRAMES_H)
106     T4VF_MOD_MAP(PL,  3, PL_VF_WHOAMI, PL_VF_WHOAMI)
107     T4VF_MOD_MAP(CIM, 1, CIM_VF_EXT_MAILBOX_CTRL, CIM_VF_EXT_MAILBOX_STATUS)
108 };
109 
110 /*
111  * There isn't a Slice to Module Map Table entry for the Mailbox Data
112  * registers, but it's convenient to use similar names as above.  There are 8
113  * little-endian 64-bit Mailbox Data registers.  Note that the "instances"
114  * value below is in terms of 32-bit words which matches the "word" addressing
115  * space we use above for the Slice to Module Map Space.
116  */
117 #define NUM_CIM_VF_MAILBOX_DATA_INSTANCES 16
118 
119 #define T4VF_MBDATA_FIRST	0
120 #define T4VF_MBDATA_LAST	((NUM_CIM_VF_MAILBOX_DATA_INSTANCES-1)*4)
121 
122 #endif /* __T4T4VF_DEFS_H__ */
123