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 | ||
e49bad31 AL |
40 | static char *mv88e6352_drv_probe(struct device *dsa_dev, |
41 | struct device *host_dev, | |
42 | int sw_addr, void **priv) | |
3ad50cca | 43 | { |
a77d43f1 AL |
44 | return mv88e6xxx_drv_probe(dsa_dev, host_dev, sw_addr, priv, |
45 | mv88e6352_table, | |
46 | ARRAY_SIZE(mv88e6352_table)); | |
3ad50cca GR |
47 | } |
48 | ||
3ad50cca GR |
49 | static int mv88e6352_setup_global(struct dsa_switch *ds) |
50 | { | |
15966a2a | 51 | u32 upstream_port = dsa_upstream_port(ds); |
3ad50cca | 52 | int ret; |
15966a2a | 53 | u32 reg; |
54d792f2 AL |
54 | |
55 | ret = mv88e6xxx_setup_global(ds); | |
56 | if (ret) | |
57 | return ret; | |
3ad50cca GR |
58 | |
59 | /* Discard packets with excessive collisions, | |
60 | * mask all interrupt sources, enable PPU (bit 14, undocumented). | |
61 | */ | |
15966a2a AL |
62 | REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL, |
63 | GLOBAL_CONTROL_PPU_ENABLE | GLOBAL_CONTROL_DISCARD_EXCESS); | |
3ad50cca | 64 | |
3ad50cca GR |
65 | /* Configure the upstream port, and configure the upstream |
66 | * port as the port to which ingress and egress monitor frames | |
67 | * are to be sent. | |
68 | */ | |
15966a2a AL |
69 | reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT | |
70 | upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT | | |
71 | upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT; | |
72 | REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg); | |
3ad50cca GR |
73 | |
74 | /* Disable remote management for now, and set the switch's | |
75 | * DSA device number. | |
76 | */ | |
77 | REG_WRITE(REG_GLOBAL, 0x1c, ds->index & 0x1f); | |
78 | ||
3ad50cca GR |
79 | return 0; |
80 | } | |
81 | ||
3ad50cca GR |
82 | static int mv88e6352_setup(struct dsa_switch *ds) |
83 | { | |
84 | struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); | |
85 | int ret; | |
3ad50cca | 86 | |
7543a6d5 AL |
87 | ps->ds = ds; |
88 | ||
acdaffcc GR |
89 | ret = mv88e6xxx_setup_common(ds); |
90 | if (ret < 0) | |
91 | return ret; | |
92 | ||
44e50ddb AL |
93 | ps->num_ports = 7; |
94 | ||
33b43df4 | 95 | mutex_init(&ps->eeprom_mutex); |
3ad50cca | 96 | |
143a8307 | 97 | ret = mv88e6xxx_switch_reset(ds, true); |
3ad50cca GR |
98 | if (ret < 0) |
99 | return ret; | |
100 | ||
3ad50cca GR |
101 | ret = mv88e6352_setup_global(ds); |
102 | if (ret < 0) | |
103 | return ret; | |
104 | ||
dbde9e66 | 105 | return mv88e6xxx_setup_ports(ds); |
3ad50cca GR |
106 | } |
107 | ||
33b43df4 GR |
108 | static int mv88e6352_read_eeprom_word(struct dsa_switch *ds, int addr) |
109 | { | |
110 | struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); | |
111 | int ret; | |
112 | ||
113 | mutex_lock(&ps->eeprom_mutex); | |
114 | ||
966bce38 AL |
115 | ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, GLOBAL2_EEPROM_OP, |
116 | GLOBAL2_EEPROM_OP_READ | | |
117 | (addr & GLOBAL2_EEPROM_OP_ADDR_MASK)); | |
33b43df4 GR |
118 | if (ret < 0) |
119 | goto error; | |
120 | ||
f3044683 | 121 | ret = mv88e6xxx_eeprom_busy_wait(ds); |
33b43df4 GR |
122 | if (ret < 0) |
123 | goto error; | |
124 | ||
966bce38 | 125 | ret = mv88e6xxx_reg_read(ds, REG_GLOBAL2, GLOBAL2_EEPROM_DATA); |
33b43df4 GR |
126 | error: |
127 | mutex_unlock(&ps->eeprom_mutex); | |
128 | return ret; | |
129 | } | |
130 | ||
131 | static int mv88e6352_get_eeprom(struct dsa_switch *ds, | |
132 | struct ethtool_eeprom *eeprom, u8 *data) | |
133 | { | |
134 | int offset; | |
135 | int len; | |
136 | int ret; | |
137 | ||
138 | offset = eeprom->offset; | |
139 | len = eeprom->len; | |
140 | eeprom->len = 0; | |
141 | ||
142 | eeprom->magic = 0xc3ec4951; | |
143 | ||
f3044683 | 144 | ret = mv88e6xxx_eeprom_load_wait(ds); |
33b43df4 GR |
145 | if (ret < 0) |
146 | return ret; | |
147 | ||
148 | if (offset & 1) { | |
149 | int word; | |
150 | ||
151 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
152 | if (word < 0) | |
153 | return word; | |
154 | ||
155 | *data++ = (word >> 8) & 0xff; | |
156 | ||
157 | offset++; | |
158 | len--; | |
159 | eeprom->len++; | |
160 | } | |
161 | ||
162 | while (len >= 2) { | |
163 | int word; | |
164 | ||
165 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
166 | if (word < 0) | |
167 | return word; | |
168 | ||
169 | *data++ = word & 0xff; | |
170 | *data++ = (word >> 8) & 0xff; | |
171 | ||
172 | offset += 2; | |
173 | len -= 2; | |
174 | eeprom->len += 2; | |
175 | } | |
176 | ||
177 | if (len) { | |
178 | int word; | |
179 | ||
180 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
181 | if (word < 0) | |
182 | return word; | |
183 | ||
184 | *data++ = word & 0xff; | |
185 | ||
186 | offset++; | |
187 | len--; | |
188 | eeprom->len++; | |
189 | } | |
190 | ||
191 | return 0; | |
192 | } | |
193 | ||
194 | static int mv88e6352_eeprom_is_readonly(struct dsa_switch *ds) | |
195 | { | |
196 | int ret; | |
197 | ||
966bce38 | 198 | ret = mv88e6xxx_reg_read(ds, REG_GLOBAL2, GLOBAL2_EEPROM_OP); |
33b43df4 GR |
199 | if (ret < 0) |
200 | return ret; | |
201 | ||
966bce38 | 202 | if (!(ret & GLOBAL2_EEPROM_OP_WRITE_EN)) |
33b43df4 GR |
203 | return -EROFS; |
204 | ||
205 | return 0; | |
206 | } | |
207 | ||
208 | static int mv88e6352_write_eeprom_word(struct dsa_switch *ds, int addr, | |
209 | u16 data) | |
210 | { | |
211 | struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); | |
212 | int ret; | |
213 | ||
214 | mutex_lock(&ps->eeprom_mutex); | |
215 | ||
966bce38 | 216 | ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, GLOBAL2_EEPROM_DATA, data); |
33b43df4 GR |
217 | if (ret < 0) |
218 | goto error; | |
219 | ||
966bce38 AL |
220 | ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, GLOBAL2_EEPROM_OP, |
221 | GLOBAL2_EEPROM_OP_WRITE | | |
222 | (addr & GLOBAL2_EEPROM_OP_ADDR_MASK)); | |
33b43df4 GR |
223 | if (ret < 0) |
224 | goto error; | |
225 | ||
f3044683 | 226 | ret = mv88e6xxx_eeprom_busy_wait(ds); |
33b43df4 GR |
227 | error: |
228 | mutex_unlock(&ps->eeprom_mutex); | |
229 | return ret; | |
230 | } | |
231 | ||
232 | static int mv88e6352_set_eeprom(struct dsa_switch *ds, | |
233 | struct ethtool_eeprom *eeprom, u8 *data) | |
234 | { | |
235 | int offset; | |
236 | int ret; | |
237 | int len; | |
238 | ||
239 | if (eeprom->magic != 0xc3ec4951) | |
240 | return -EINVAL; | |
241 | ||
242 | ret = mv88e6352_eeprom_is_readonly(ds); | |
243 | if (ret) | |
244 | return ret; | |
245 | ||
246 | offset = eeprom->offset; | |
247 | len = eeprom->len; | |
248 | eeprom->len = 0; | |
249 | ||
f3044683 | 250 | ret = mv88e6xxx_eeprom_load_wait(ds); |
33b43df4 GR |
251 | if (ret < 0) |
252 | return ret; | |
253 | ||
254 | if (offset & 1) { | |
255 | int word; | |
256 | ||
257 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
258 | if (word < 0) | |
259 | return word; | |
260 | ||
261 | word = (*data++ << 8) | (word & 0xff); | |
262 | ||
263 | ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word); | |
264 | if (ret < 0) | |
265 | return ret; | |
266 | ||
267 | offset++; | |
268 | len--; | |
269 | eeprom->len++; | |
270 | } | |
271 | ||
272 | while (len >= 2) { | |
273 | int word; | |
274 | ||
275 | word = *data++; | |
276 | word |= *data++ << 8; | |
277 | ||
278 | ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word); | |
279 | if (ret < 0) | |
280 | return ret; | |
281 | ||
282 | offset += 2; | |
283 | len -= 2; | |
284 | eeprom->len += 2; | |
285 | } | |
286 | ||
287 | if (len) { | |
288 | int word; | |
289 | ||
290 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
291 | if (word < 0) | |
292 | return word; | |
293 | ||
294 | word = (word & 0xff00) | *data++; | |
295 | ||
296 | ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word); | |
297 | if (ret < 0) | |
298 | return ret; | |
299 | ||
300 | offset++; | |
301 | len--; | |
302 | eeprom->len++; | |
303 | } | |
304 | ||
305 | return 0; | |
306 | } | |
307 | ||
3ad50cca GR |
308 | struct dsa_switch_driver mv88e6352_switch_driver = { |
309 | .tag_protocol = DSA_TAG_PROTO_EDSA, | |
e49bad31 | 310 | .probe = mv88e6352_drv_probe, |
3ad50cca GR |
311 | .setup = mv88e6352_setup, |
312 | .set_addr = mv88e6xxx_set_addr_indirect, | |
fd3a0ee4 AL |
313 | .phy_read = mv88e6xxx_phy_read_indirect, |
314 | .phy_write = mv88e6xxx_phy_write_indirect, | |
e413e7e1 AL |
315 | .get_strings = mv88e6xxx_get_strings, |
316 | .get_ethtool_stats = mv88e6xxx_get_ethtool_stats, | |
317 | .get_sset_count = mv88e6xxx_get_sset_count, | |
dea87024 | 318 | .adjust_link = mv88e6xxx_adjust_link, |
04b0a80b GR |
319 | .set_eee = mv88e6xxx_set_eee, |
320 | .get_eee = mv88e6xxx_get_eee, | |
276db3b1 | 321 | #ifdef CONFIG_NET_DSA_HWMON |
c22995c5 GR |
322 | .get_temp = mv88e6xxx_get_temp, |
323 | .get_temp_limit = mv88e6xxx_get_temp_limit, | |
324 | .set_temp_limit = mv88e6xxx_set_temp_limit, | |
325 | .get_temp_alarm = mv88e6xxx_get_temp_alarm, | |
276db3b1 | 326 | #endif |
33b43df4 GR |
327 | .get_eeprom = mv88e6352_get_eeprom, |
328 | .set_eeprom = mv88e6352_set_eeprom, | |
95d08b5a GR |
329 | .get_regs_len = mv88e6xxx_get_regs_len, |
330 | .get_regs = mv88e6xxx_get_regs, | |
71327a4e VD |
331 | .port_bridge_join = mv88e6xxx_port_bridge_join, |
332 | .port_bridge_leave = mv88e6xxx_port_bridge_leave, | |
43c44a9f | 333 | .port_stp_state_set = mv88e6xxx_port_stp_state_set, |
214cdb99 | 334 | .port_vlan_filtering = mv88e6xxx_port_vlan_filtering, |
76e398a6 | 335 | .port_vlan_prepare = mv88e6xxx_port_vlan_prepare, |
0d3b33e6 | 336 | .port_vlan_add = mv88e6xxx_port_vlan_add, |
7dad08d7 | 337 | .port_vlan_del = mv88e6xxx_port_vlan_del, |
ceff5eff | 338 | .port_vlan_dump = mv88e6xxx_port_vlan_dump, |
146a3206 | 339 | .port_fdb_prepare = mv88e6xxx_port_fdb_prepare, |
2a778e1b VD |
340 | .port_fdb_add = mv88e6xxx_port_fdb_add, |
341 | .port_fdb_del = mv88e6xxx_port_fdb_del, | |
f33475bd | 342 | .port_fdb_dump = mv88e6xxx_port_fdb_dump, |
3ad50cca GR |
343 | }; |
344 | ||
1636d883 | 345 | MODULE_ALIAS("platform:mv88e6172"); |
7c3d0d67 AK |
346 | MODULE_ALIAS("platform:mv88e6176"); |
347 | MODULE_ALIAS("platform:mv88e6320"); | |
348 | MODULE_ALIAS("platform:mv88e6321"); | |
349 | MODULE_ALIAS("platform:mv88e6352"); |