1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
/* Ethernet Physical Receiver model.
Copyright (C) 2010-2016 Free Software Foundation, Inc.
Contributed by Analog Devices, Inc.
This file is part of simulators.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "config.h"
#include "sim-main.h"
#include "devices.h"
#if defined (HAVE_LINUX_MII_H) && defined (HAVE_LINUX_TYPES_H)
/* Workaround old/broken linux headers. */
#include <linux/types.h>
#include <linux/mii.h>
#define REG_PHY_SIZE 0x20
struct eth_phy
{
bu32 base;
bu16 regs[REG_PHY_SIZE];
};
#define reg_base() offsetof(struct eth_phy, regs[0])
#define reg_offset(reg) (offsetof(struct eth_phy, reg) - reg_base())
#define reg_idx(reg) (reg_offset (reg) / 4)
static const char * const reg_names[] =
{
[MII_BMCR ] = "MII_BMCR",
[MII_BMSR ] = "MII_BMSR",
[MII_PHYSID1 ] = "MII_PHYSID1",
[MII_PHYSID2 ] = "MII_PHYSID2",
[MII_ADVERTISE ] = "MII_ADVERTISE",
[MII_LPA ] = "MII_LPA",
[MII_EXPANSION ] = "MII_EXPANSION",
#ifdef MII_CTRL1000
[MII_CTRL1000 ] = "MII_CTRL1000",
#endif
#ifdef MII_STAT1000
[MII_STAT1000 ] = "MII_STAT1000",
#endif
#ifdef MII_ESTATUS
[MII_ESTATUS ] = "MII_ESTATUS",
#endif
[MII_DCOUNTER ] = "MII_DCOUNTER",
[MII_FCSCOUNTER ] = "MII_FCSCOUNTER",
[MII_NWAYTEST ] = "MII_NWAYTEST",
[MII_RERRCOUNTER] = "MII_RERRCOUNTER",
[MII_SREVISION ] = "MII_SREVISION",
[MII_RESV1 ] = "MII_RESV1",
[MII_LBRERROR ] = "MII_LBRERROR",
[MII_PHYADDR ] = "MII_PHYADDR",
[MII_RESV2 ] = "MII_RESV2",
[MII_TPISTATUS ] = "MII_TPISTATUS",
[MII_NCONFIG ] = "MII_NCONFIG",
};
#define mmr_name(off) (reg_names[off] ? : "<INV>")
#define mmr_off reg_off
static unsigned
eth_phy_io_write_buffer (struct hw *me, const void *source,
int space, address_word addr, unsigned nr_bytes)
{
struct eth_phy *phy = hw_data (me);
bu16 reg_off;
bu16 value;
bu16 *valuep;
value = dv_load_2 (source);
reg_off = addr - phy->base;
valuep = (void *)((unsigned long)phy + reg_base() + reg_off);
HW_TRACE_WRITE ();
switch (reg_off)
{
case MII_BMCR:
*valuep = value;
break;
case MII_PHYSID1:
case MII_PHYSID2:
/* Discard writes to these. */
break;
default:
/* XXX: Discard writes to unknown regs ? */
*valuep = value;
break;
}
return nr_bytes;
}
static unsigned
eth_phy_io_read_buffer (struct hw *me, void *dest,
int space, address_word addr, unsigned nr_bytes)
{
struct eth_phy *phy = hw_data (me);
bu16 reg_off;
bu16 *valuep;
reg_off = addr - phy->base;
valuep = (void *)((unsigned long)phy + reg_base() + reg_off);
HW_TRACE_READ ();
switch (reg_off)
{
case MII_BMCR:
dv_store_2 (dest, *valuep);
break;
case MII_BMSR:
/* XXX: Let people control this ? */
*valuep = BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | BMSR_10HALF |
BMSR_ANEGCOMPLETE | BMSR_ANEGCAPABLE | BMSR_LSTATUS;
dv_store_2 (dest, *valuep);
break;
case MII_LPA:
/* XXX: Let people control this ? */
*valuep = LPA_100FULL | LPA_100HALF | LPA_10FULL | LPA_10HALF;
dv_store_2 (dest, *valuep);
break;
default:
dv_store_2 (dest, *valuep);
break;
}
return nr_bytes;
}
static void
attach_eth_phy_regs (struct hw *me, struct eth_phy *phy)
{
address_word attach_address;
int attach_space;
unsigned attach_size;
reg_property_spec reg;
if (hw_find_property (me, "reg") == NULL)
hw_abort (me, "Missing \"reg\" property");
if (!hw_find_reg_array_property (me, "reg", 0, ®))
hw_abort (me, "\"reg\" property must contain three addr/size entries");
hw_unit_address_to_attach_address (hw_parent (me),
®.address,
&attach_space, &attach_address, me);
hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me);
if (attach_size != REG_PHY_SIZE)
hw_abort (me, "\"reg\" size must be %#x", REG_PHY_SIZE);
hw_attach_address (hw_parent (me),
0, attach_space, attach_address, attach_size, me);
phy->base = attach_address;
}
static void
eth_phy_finish (struct hw *me)
{
struct eth_phy *phy;
phy = HW_ZALLOC (me, struct eth_phy);
set_hw_data (me, phy);
set_hw_io_read_buffer (me, eth_phy_io_read_buffer);
set_hw_io_write_buffer (me, eth_phy_io_write_buffer);
attach_eth_phy_regs (me, phy);
/* Initialize the PHY. */
phy->regs[MII_PHYSID1] = 0; /* Unassigned Vendor */
phy->regs[MII_PHYSID2] = 0xAD; /* Product */
}
#else
static void
eth_phy_finish (struct hw *me)
{
HW_TRACE ((me, "No linux/mii.h support found"));
}
#endif
const struct hw_descriptor dv_eth_phy_descriptor[] =
{
{"eth_phy", eth_phy_finish,},
{NULL, NULL},
};
|
