Commit | Line | Data |
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3ad50cca GR |
1 | /* |
2 | * net/dsa/mv88e6352.c - Marvell 88e6352 switch chip support | |
3 | * | |
4 | * Copyright (c) 2014 Guenter Roeck | |
5 | * | |
6 | * Derived from mv88e6123_61_65.c | |
7 | * Copyright (c) 2008-2009 Marvell Semiconductor | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | */ | |
14 | ||
15 | #include <linux/delay.h> | |
16 | #include <linux/jiffies.h> | |
17 | #include <linux/list.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/netdevice.h> | |
20 | #include <linux/platform_device.h> | |
21 | #include <linux/phy.h> | |
22 | #include <net/dsa.h> | |
23 | #include "mv88e6xxx.h" | |
24 | ||
b9b37713 VD |
25 | static const struct mv88e6xxx_switch_id mv88e6352_table[] = { |
26 | { PORT_SWITCH_ID_6172, "Marvell 88E6172" }, | |
27 | { PORT_SWITCH_ID_6176, "Marvell 88E6176" }, | |
bd16a724 | 28 | { PORT_SWITCH_ID_6240, "Marvell 88E6240" }, |
b9b37713 VD |
29 | { PORT_SWITCH_ID_6320, "Marvell 88E6320" }, |
30 | { PORT_SWITCH_ID_6320_A1, "Marvell 88E6320 (A1)" }, | |
31 | { PORT_SWITCH_ID_6320_A2, "Marvell 88e6320 (A2)" }, | |
32 | { PORT_SWITCH_ID_6321, "Marvell 88E6321" }, | |
33 | { PORT_SWITCH_ID_6321_A1, "Marvell 88E6321 (A1)" }, | |
34 | { PORT_SWITCH_ID_6321_A2, "Marvell 88e6321 (A2)" }, | |
35 | { PORT_SWITCH_ID_6352, "Marvell 88E6352" }, | |
36 | { PORT_SWITCH_ID_6352_A0, "Marvell 88E6352 (A0)" }, | |
37 | { PORT_SWITCH_ID_6352_A1, "Marvell 88E6352 (A1)" }, | |
38 | }; | |
39 | ||
bbb8d793 AL |
40 | static char *mv88e6352_probe(struct device *dsa_dev, struct device *host_dev, |
41 | int sw_addr) | |
3ad50cca | 42 | { |
b9b37713 VD |
43 | return mv88e6xxx_lookup_name(host_dev, sw_addr, mv88e6352_table, |
44 | ARRAY_SIZE(mv88e6352_table)); | |
3ad50cca GR |
45 | } |
46 | ||
3ad50cca GR |
47 | static int mv88e6352_setup_global(struct dsa_switch *ds) |
48 | { | |
15966a2a | 49 | u32 upstream_port = dsa_upstream_port(ds); |
3ad50cca | 50 | int ret; |
15966a2a | 51 | u32 reg; |
54d792f2 AL |
52 | |
53 | ret = mv88e6xxx_setup_global(ds); | |
54 | if (ret) | |
55 | return ret; | |
3ad50cca GR |
56 | |
57 | /* Discard packets with excessive collisions, | |
58 | * mask all interrupt sources, enable PPU (bit 14, undocumented). | |
59 | */ | |
15966a2a AL |
60 | REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL, |
61 | GLOBAL_CONTROL_PPU_ENABLE | GLOBAL_CONTROL_DISCARD_EXCESS); | |
3ad50cca | 62 | |
3ad50cca GR |
63 | /* Configure the upstream port, and configure the upstream |
64 | * port as the port to which ingress and egress monitor frames | |
65 | * are to be sent. | |
66 | */ | |
15966a2a AL |
67 | reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT | |
68 | upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT | | |
69 | upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT; | |
70 | REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg); | |
3ad50cca GR |
71 | |
72 | /* Disable remote management for now, and set the switch's | |
73 | * DSA device number. | |
74 | */ | |
75 | REG_WRITE(REG_GLOBAL, 0x1c, ds->index & 0x1f); | |
76 | ||
3ad50cca GR |
77 | return 0; |
78 | } | |
79 | ||
3ad50cca GR |
80 | static int mv88e6352_setup(struct dsa_switch *ds) |
81 | { | |
82 | struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); | |
83 | int ret; | |
3ad50cca | 84 | |
acdaffcc GR |
85 | ret = mv88e6xxx_setup_common(ds); |
86 | if (ret < 0) | |
87 | return ret; | |
88 | ||
44e50ddb AL |
89 | ps->num_ports = 7; |
90 | ||
33b43df4 | 91 | mutex_init(&ps->eeprom_mutex); |
3ad50cca | 92 | |
143a8307 | 93 | ret = mv88e6xxx_switch_reset(ds, true); |
3ad50cca GR |
94 | if (ret < 0) |
95 | return ret; | |
96 | ||
3ad50cca GR |
97 | ret = mv88e6352_setup_global(ds); |
98 | if (ret < 0) | |
99 | return ret; | |
100 | ||
dbde9e66 | 101 | return mv88e6xxx_setup_ports(ds); |
3ad50cca GR |
102 | } |
103 | ||
33b43df4 GR |
104 | static int mv88e6352_read_eeprom_word(struct dsa_switch *ds, int addr) |
105 | { | |
106 | struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); | |
107 | int ret; | |
108 | ||
109 | mutex_lock(&ps->eeprom_mutex); | |
110 | ||
966bce38 AL |
111 | ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, GLOBAL2_EEPROM_OP, |
112 | GLOBAL2_EEPROM_OP_READ | | |
113 | (addr & GLOBAL2_EEPROM_OP_ADDR_MASK)); | |
33b43df4 GR |
114 | if (ret < 0) |
115 | goto error; | |
116 | ||
f3044683 | 117 | ret = mv88e6xxx_eeprom_busy_wait(ds); |
33b43df4 GR |
118 | if (ret < 0) |
119 | goto error; | |
120 | ||
966bce38 | 121 | ret = mv88e6xxx_reg_read(ds, REG_GLOBAL2, GLOBAL2_EEPROM_DATA); |
33b43df4 GR |
122 | error: |
123 | mutex_unlock(&ps->eeprom_mutex); | |
124 | return ret; | |
125 | } | |
126 | ||
127 | static int mv88e6352_get_eeprom(struct dsa_switch *ds, | |
128 | struct ethtool_eeprom *eeprom, u8 *data) | |
129 | { | |
130 | int offset; | |
131 | int len; | |
132 | int ret; | |
133 | ||
134 | offset = eeprom->offset; | |
135 | len = eeprom->len; | |
136 | eeprom->len = 0; | |
137 | ||
138 | eeprom->magic = 0xc3ec4951; | |
139 | ||
f3044683 | 140 | ret = mv88e6xxx_eeprom_load_wait(ds); |
33b43df4 GR |
141 | if (ret < 0) |
142 | return ret; | |
143 | ||
144 | if (offset & 1) { | |
145 | int word; | |
146 | ||
147 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
148 | if (word < 0) | |
149 | return word; | |
150 | ||
151 | *data++ = (word >> 8) & 0xff; | |
152 | ||
153 | offset++; | |
154 | len--; | |
155 | eeprom->len++; | |
156 | } | |
157 | ||
158 | while (len >= 2) { | |
159 | int word; | |
160 | ||
161 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
162 | if (word < 0) | |
163 | return word; | |
164 | ||
165 | *data++ = word & 0xff; | |
166 | *data++ = (word >> 8) & 0xff; | |
167 | ||
168 | offset += 2; | |
169 | len -= 2; | |
170 | eeprom->len += 2; | |
171 | } | |
172 | ||
173 | if (len) { | |
174 | int word; | |
175 | ||
176 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
177 | if (word < 0) | |
178 | return word; | |
179 | ||
180 | *data++ = word & 0xff; | |
181 | ||
182 | offset++; | |
183 | len--; | |
184 | eeprom->len++; | |
185 | } | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
190 | static int mv88e6352_eeprom_is_readonly(struct dsa_switch *ds) | |
191 | { | |
192 | int ret; | |
193 | ||
966bce38 | 194 | ret = mv88e6xxx_reg_read(ds, REG_GLOBAL2, GLOBAL2_EEPROM_OP); |
33b43df4 GR |
195 | if (ret < 0) |
196 | return ret; | |
197 | ||
966bce38 | 198 | if (!(ret & GLOBAL2_EEPROM_OP_WRITE_EN)) |
33b43df4 GR |
199 | return -EROFS; |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | static int mv88e6352_write_eeprom_word(struct dsa_switch *ds, int addr, | |
205 | u16 data) | |
206 | { | |
207 | struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); | |
208 | int ret; | |
209 | ||
210 | mutex_lock(&ps->eeprom_mutex); | |
211 | ||
966bce38 | 212 | ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, GLOBAL2_EEPROM_DATA, data); |
33b43df4 GR |
213 | if (ret < 0) |
214 | goto error; | |
215 | ||
966bce38 AL |
216 | ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, GLOBAL2_EEPROM_OP, |
217 | GLOBAL2_EEPROM_OP_WRITE | | |
218 | (addr & GLOBAL2_EEPROM_OP_ADDR_MASK)); | |
33b43df4 GR |
219 | if (ret < 0) |
220 | goto error; | |
221 | ||
f3044683 | 222 | ret = mv88e6xxx_eeprom_busy_wait(ds); |
33b43df4 GR |
223 | error: |
224 | mutex_unlock(&ps->eeprom_mutex); | |
225 | return ret; | |
226 | } | |
227 | ||
228 | static int mv88e6352_set_eeprom(struct dsa_switch *ds, | |
229 | struct ethtool_eeprom *eeprom, u8 *data) | |
230 | { | |
231 | int offset; | |
232 | int ret; | |
233 | int len; | |
234 | ||
235 | if (eeprom->magic != 0xc3ec4951) | |
236 | return -EINVAL; | |
237 | ||
238 | ret = mv88e6352_eeprom_is_readonly(ds); | |
239 | if (ret) | |
240 | return ret; | |
241 | ||
242 | offset = eeprom->offset; | |
243 | len = eeprom->len; | |
244 | eeprom->len = 0; | |
245 | ||
f3044683 | 246 | ret = mv88e6xxx_eeprom_load_wait(ds); |
33b43df4 GR |
247 | if (ret < 0) |
248 | return ret; | |
249 | ||
250 | if (offset & 1) { | |
251 | int word; | |
252 | ||
253 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
254 | if (word < 0) | |
255 | return word; | |
256 | ||
257 | word = (*data++ << 8) | (word & 0xff); | |
258 | ||
259 | ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word); | |
260 | if (ret < 0) | |
261 | return ret; | |
262 | ||
263 | offset++; | |
264 | len--; | |
265 | eeprom->len++; | |
266 | } | |
267 | ||
268 | while (len >= 2) { | |
269 | int word; | |
270 | ||
271 | word = *data++; | |
272 | word |= *data++ << 8; | |
273 | ||
274 | ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word); | |
275 | if (ret < 0) | |
276 | return ret; | |
277 | ||
278 | offset += 2; | |
279 | len -= 2; | |
280 | eeprom->len += 2; | |
281 | } | |
282 | ||
283 | if (len) { | |
284 | int word; | |
285 | ||
286 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
287 | if (word < 0) | |
288 | return word; | |
289 | ||
290 | word = (word & 0xff00) | *data++; | |
291 | ||
292 | ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word); | |
293 | if (ret < 0) | |
294 | return ret; | |
295 | ||
296 | offset++; | |
297 | len--; | |
298 | eeprom->len++; | |
299 | } | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
3ad50cca GR |
304 | struct dsa_switch_driver mv88e6352_switch_driver = { |
305 | .tag_protocol = DSA_TAG_PROTO_EDSA, | |
306 | .priv_size = sizeof(struct mv88e6xxx_priv_state), | |
307 | .probe = mv88e6352_probe, | |
308 | .setup = mv88e6352_setup, | |
309 | .set_addr = mv88e6xxx_set_addr_indirect, | |
fd3a0ee4 AL |
310 | .phy_read = mv88e6xxx_phy_read_indirect, |
311 | .phy_write = mv88e6xxx_phy_write_indirect, | |
e413e7e1 AL |
312 | .get_strings = mv88e6xxx_get_strings, |
313 | .get_ethtool_stats = mv88e6xxx_get_ethtool_stats, | |
314 | .get_sset_count = mv88e6xxx_get_sset_count, | |
dea87024 | 315 | .adjust_link = mv88e6xxx_adjust_link, |
04b0a80b GR |
316 | .set_eee = mv88e6xxx_set_eee, |
317 | .get_eee = mv88e6xxx_get_eee, | |
276db3b1 | 318 | #ifdef CONFIG_NET_DSA_HWMON |
c22995c5 GR |
319 | .get_temp = mv88e6xxx_get_temp, |
320 | .get_temp_limit = mv88e6xxx_get_temp_limit, | |
321 | .set_temp_limit = mv88e6xxx_set_temp_limit, | |
322 | .get_temp_alarm = mv88e6xxx_get_temp_alarm, | |
276db3b1 | 323 | #endif |
33b43df4 GR |
324 | .get_eeprom = mv88e6352_get_eeprom, |
325 | .set_eeprom = mv88e6352_set_eeprom, | |
95d08b5a GR |
326 | .get_regs_len = mv88e6xxx_get_regs_len, |
327 | .get_regs = mv88e6xxx_get_regs, | |
71327a4e VD |
328 | .port_bridge_join = mv88e6xxx_port_bridge_join, |
329 | .port_bridge_leave = mv88e6xxx_port_bridge_leave, | |
43c44a9f | 330 | .port_stp_state_set = mv88e6xxx_port_stp_state_set, |
214cdb99 | 331 | .port_vlan_filtering = mv88e6xxx_port_vlan_filtering, |
76e398a6 | 332 | .port_vlan_prepare = mv88e6xxx_port_vlan_prepare, |
0d3b33e6 | 333 | .port_vlan_add = mv88e6xxx_port_vlan_add, |
7dad08d7 | 334 | .port_vlan_del = mv88e6xxx_port_vlan_del, |
ceff5eff | 335 | .port_vlan_dump = mv88e6xxx_port_vlan_dump, |
146a3206 | 336 | .port_fdb_prepare = mv88e6xxx_port_fdb_prepare, |
2a778e1b VD |
337 | .port_fdb_add = mv88e6xxx_port_fdb_add, |
338 | .port_fdb_del = mv88e6xxx_port_fdb_del, | |
f33475bd | 339 | .port_fdb_dump = mv88e6xxx_port_fdb_dump, |
3ad50cca GR |
340 | }; |
341 | ||
1636d883 | 342 | MODULE_ALIAS("platform:mv88e6172"); |
7c3d0d67 AK |
343 | MODULE_ALIAS("platform:mv88e6176"); |
344 | MODULE_ALIAS("platform:mv88e6320"); | |
345 | MODULE_ALIAS("platform:mv88e6321"); | |
346 | MODULE_ALIAS("platform:mv88e6352"); |