Commit | Line | Data |
---|---|---|
ef016f83 MF |
1 | /* Ethernet Physical Receiver model. |
2 | ||
618f726f | 3 | Copyright (C) 2010-2016 Free Software Foundation, Inc. |
ef016f83 MF |
4 | Contributed by Analog Devices, Inc. |
5 | ||
6 | This file is part of simulators. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 3 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #include "config.h" | |
22 | ||
23 | #include "sim-main.h" | |
24 | #include "devices.h" | |
25 | ||
84de2f06 | 26 | #if defined (HAVE_LINUX_MII_H) && defined (HAVE_LINUX_TYPES_H) |
ef016f83 MF |
27 | |
28 | /* Workaround old/broken linux headers. */ | |
84de2f06 | 29 | #include <linux/types.h> |
ef016f83 MF |
30 | #include <linux/mii.h> |
31 | ||
32 | #define REG_PHY_SIZE 0x20 | |
33 | ||
34 | struct eth_phy | |
35 | { | |
36 | bu32 base; | |
37 | bu16 regs[REG_PHY_SIZE]; | |
38 | }; | |
39 | #define reg_base() offsetof(struct eth_phy, regs[0]) | |
40 | #define reg_offset(reg) (offsetof(struct eth_phy, reg) - reg_base()) | |
41 | #define reg_idx(reg) (reg_offset (reg) / 4) | |
42 | ||
990d19fd MF |
43 | static const char * const reg_names[] = |
44 | { | |
ef016f83 MF |
45 | [MII_BMCR ] = "MII_BMCR", |
46 | [MII_BMSR ] = "MII_BMSR", | |
47 | [MII_PHYSID1 ] = "MII_PHYSID1", | |
48 | [MII_PHYSID2 ] = "MII_PHYSID2", | |
49 | [MII_ADVERTISE ] = "MII_ADVERTISE", | |
50 | [MII_LPA ] = "MII_LPA", | |
51 | [MII_EXPANSION ] = "MII_EXPANSION", | |
52 | #ifdef MII_CTRL1000 | |
53 | [MII_CTRL1000 ] = "MII_CTRL1000", | |
54 | #endif | |
55 | #ifdef MII_STAT1000 | |
56 | [MII_STAT1000 ] = "MII_STAT1000", | |
57 | #endif | |
58 | #ifdef MII_ESTATUS | |
59 | [MII_ESTATUS ] = "MII_ESTATUS", | |
60 | #endif | |
61 | [MII_DCOUNTER ] = "MII_DCOUNTER", | |
62 | [MII_FCSCOUNTER ] = "MII_FCSCOUNTER", | |
63 | [MII_NWAYTEST ] = "MII_NWAYTEST", | |
64 | [MII_RERRCOUNTER] = "MII_RERRCOUNTER", | |
65 | [MII_SREVISION ] = "MII_SREVISION", | |
66 | [MII_RESV1 ] = "MII_RESV1", | |
67 | [MII_LBRERROR ] = "MII_LBRERROR", | |
68 | [MII_PHYADDR ] = "MII_PHYADDR", | |
69 | [MII_RESV2 ] = "MII_RESV2", | |
70 | [MII_TPISTATUS ] = "MII_TPISTATUS", | |
71 | [MII_NCONFIG ] = "MII_NCONFIG", | |
72 | }; | |
73 | #define mmr_name(off) (reg_names[off] ? : "<INV>") | |
74 | #define mmr_off reg_off | |
75 | ||
76 | static unsigned | |
77 | eth_phy_io_write_buffer (struct hw *me, const void *source, | |
78 | int space, address_word addr, unsigned nr_bytes) | |
79 | { | |
80 | struct eth_phy *phy = hw_data (me); | |
81 | bu16 reg_off; | |
82 | bu16 value; | |
83 | bu16 *valuep; | |
84 | ||
85 | value = dv_load_2 (source); | |
86 | ||
87 | reg_off = addr - phy->base; | |
88 | valuep = (void *)((unsigned long)phy + reg_base() + reg_off); | |
89 | ||
90 | HW_TRACE_WRITE (); | |
91 | ||
92 | switch (reg_off) | |
93 | { | |
94 | case MII_BMCR: | |
95 | *valuep = value; | |
96 | break; | |
97 | case MII_PHYSID1: | |
98 | case MII_PHYSID2: | |
99 | /* Discard writes to these. */ | |
100 | break; | |
101 | default: | |
102 | /* XXX: Discard writes to unknown regs ? */ | |
103 | *valuep = value; | |
104 | break; | |
105 | } | |
106 | ||
107 | return nr_bytes; | |
108 | } | |
109 | ||
110 | static unsigned | |
111 | eth_phy_io_read_buffer (struct hw *me, void *dest, | |
112 | int space, address_word addr, unsigned nr_bytes) | |
113 | { | |
114 | struct eth_phy *phy = hw_data (me); | |
115 | bu16 reg_off; | |
116 | bu16 *valuep; | |
117 | ||
118 | reg_off = addr - phy->base; | |
119 | valuep = (void *)((unsigned long)phy + reg_base() + reg_off); | |
120 | ||
121 | HW_TRACE_READ (); | |
122 | ||
123 | switch (reg_off) | |
124 | { | |
125 | case MII_BMCR: | |
126 | dv_store_2 (dest, *valuep); | |
127 | break; | |
128 | case MII_BMSR: | |
129 | /* XXX: Let people control this ? */ | |
130 | *valuep = BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | BMSR_10HALF | | |
131 | BMSR_ANEGCOMPLETE | BMSR_ANEGCAPABLE | BMSR_LSTATUS; | |
132 | dv_store_2 (dest, *valuep); | |
133 | break; | |
134 | case MII_LPA: | |
135 | /* XXX: Let people control this ? */ | |
136 | *valuep = LPA_100FULL | LPA_100HALF | LPA_10FULL | LPA_10HALF; | |
137 | dv_store_2 (dest, *valuep); | |
138 | break; | |
139 | default: | |
140 | dv_store_2 (dest, *valuep); | |
141 | break; | |
142 | } | |
143 | ||
144 | return nr_bytes; | |
145 | } | |
146 | ||
147 | static void | |
148 | attach_eth_phy_regs (struct hw *me, struct eth_phy *phy) | |
149 | { | |
150 | address_word attach_address; | |
151 | int attach_space; | |
152 | unsigned attach_size; | |
153 | reg_property_spec reg; | |
154 | ||
155 | if (hw_find_property (me, "reg") == NULL) | |
156 | hw_abort (me, "Missing \"reg\" property"); | |
157 | ||
158 | if (!hw_find_reg_array_property (me, "reg", 0, ®)) | |
159 | hw_abort (me, "\"reg\" property must contain three addr/size entries"); | |
160 | ||
161 | hw_unit_address_to_attach_address (hw_parent (me), | |
162 | ®.address, | |
163 | &attach_space, &attach_address, me); | |
164 | hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me); | |
165 | ||
166 | if (attach_size != REG_PHY_SIZE) | |
167 | hw_abort (me, "\"reg\" size must be %#x", REG_PHY_SIZE); | |
168 | ||
169 | hw_attach_address (hw_parent (me), | |
170 | 0, attach_space, attach_address, attach_size, me); | |
171 | ||
172 | phy->base = attach_address; | |
173 | } | |
174 | ||
175 | static void | |
176 | eth_phy_finish (struct hw *me) | |
177 | { | |
178 | struct eth_phy *phy; | |
179 | ||
180 | phy = HW_ZALLOC (me, struct eth_phy); | |
181 | ||
182 | set_hw_data (me, phy); | |
183 | set_hw_io_read_buffer (me, eth_phy_io_read_buffer); | |
184 | set_hw_io_write_buffer (me, eth_phy_io_write_buffer); | |
185 | ||
186 | attach_eth_phy_regs (me, phy); | |
187 | ||
188 | /* Initialize the PHY. */ | |
189 | phy->regs[MII_PHYSID1] = 0; /* Unassigned Vendor */ | |
190 | phy->regs[MII_PHYSID2] = 0xAD; /* Product */ | |
191 | } | |
192 | ||
193 | #else | |
194 | ||
195 | static void | |
196 | eth_phy_finish (struct hw *me) | |
197 | { | |
198 | HW_TRACE ((me, "No linux/mii.h support found")); | |
199 | } | |
200 | ||
201 | #endif | |
202 | ||
81d126c3 MF |
203 | const struct hw_descriptor dv_eth_phy_descriptor[] = |
204 | { | |
ef016f83 MF |
205 | {"eth_phy", eth_phy_finish,}, |
206 | {NULL, NULL}, | |
207 | }; |