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 | ||
3ad50cca GR |
25 | static char *mv88e6352_probe(struct device *host_dev, int sw_addr) |
26 | { | |
27 | struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev); | |
28 | int ret; | |
29 | ||
30 | if (bus == NULL) | |
31 | return NULL; | |
32 | ||
cca8b133 | 33 | ret = __mv88e6xxx_reg_read(bus, sw_addr, REG_PORT(0), PORT_SWITCH_ID); |
3ad50cca | 34 | if (ret >= 0) { |
1636d883 AL |
35 | if ((ret & 0xfff0) == PORT_SWITCH_ID_6172) |
36 | return "Marvell 88E6172"; | |
cca8b133 | 37 | if ((ret & 0xfff0) == PORT_SWITCH_ID_6176) |
2716777b | 38 | return "Marvell 88E6176"; |
cca8b133 | 39 | if (ret == PORT_SWITCH_ID_6352_A0) |
3ad50cca | 40 | return "Marvell 88E6352 (A0)"; |
cca8b133 | 41 | if (ret == PORT_SWITCH_ID_6352_A1) |
3ad50cca | 42 | return "Marvell 88E6352 (A1)"; |
cca8b133 | 43 | if ((ret & 0xfff0) == PORT_SWITCH_ID_6352) |
3ad50cca GR |
44 | return "Marvell 88E6352"; |
45 | } | |
46 | ||
47 | return NULL; | |
48 | } | |
49 | ||
3ad50cca GR |
50 | static int mv88e6352_setup_global(struct dsa_switch *ds) |
51 | { | |
15966a2a | 52 | u32 upstream_port = dsa_upstream_port(ds); |
3ad50cca | 53 | int ret; |
15966a2a | 54 | u32 reg; |
54d792f2 AL |
55 | |
56 | ret = mv88e6xxx_setup_global(ds); | |
57 | if (ret) | |
58 | return ret; | |
3ad50cca GR |
59 | |
60 | /* Discard packets with excessive collisions, | |
61 | * mask all interrupt sources, enable PPU (bit 14, undocumented). | |
62 | */ | |
15966a2a AL |
63 | REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL, |
64 | GLOBAL_CONTROL_PPU_ENABLE | GLOBAL_CONTROL_DISCARD_EXCESS); | |
3ad50cca | 65 | |
3ad50cca GR |
66 | /* Configure the upstream port, and configure the upstream |
67 | * port as the port to which ingress and egress monitor frames | |
68 | * are to be sent. | |
69 | */ | |
15966a2a AL |
70 | reg = upstream_port << GLOBAL_MONITOR_CONTROL_INGRESS_SHIFT | |
71 | upstream_port << GLOBAL_MONITOR_CONTROL_EGRESS_SHIFT | | |
72 | upstream_port << GLOBAL_MONITOR_CONTROL_ARP_SHIFT; | |
73 | REG_WRITE(REG_GLOBAL, GLOBAL_MONITOR_CONTROL, reg); | |
3ad50cca GR |
74 | |
75 | /* Disable remote management for now, and set the switch's | |
76 | * DSA device number. | |
77 | */ | |
78 | REG_WRITE(REG_GLOBAL, 0x1c, ds->index & 0x1f); | |
79 | ||
3ad50cca GR |
80 | return 0; |
81 | } | |
82 | ||
276db3b1 GR |
83 | #ifdef CONFIG_NET_DSA_HWMON |
84 | ||
276db3b1 GR |
85 | static int mv88e6352_get_temp(struct dsa_switch *ds, int *temp) |
86 | { | |
87 | int ret; | |
88 | ||
89 | *temp = 0; | |
90 | ||
49143585 | 91 | ret = mv88e6xxx_phy_page_read(ds, 0, 6, 27); |
276db3b1 GR |
92 | if (ret < 0) |
93 | return ret; | |
94 | ||
95 | *temp = (ret & 0xff) - 25; | |
96 | ||
97 | return 0; | |
98 | } | |
99 | ||
100 | static int mv88e6352_get_temp_limit(struct dsa_switch *ds, int *temp) | |
101 | { | |
102 | int ret; | |
103 | ||
104 | *temp = 0; | |
105 | ||
49143585 | 106 | ret = mv88e6xxx_phy_page_read(ds, 0, 6, 26); |
276db3b1 GR |
107 | if (ret < 0) |
108 | return ret; | |
109 | ||
110 | *temp = (((ret >> 8) & 0x1f) * 5) - 25; | |
111 | ||
112 | return 0; | |
113 | } | |
114 | ||
115 | static int mv88e6352_set_temp_limit(struct dsa_switch *ds, int temp) | |
116 | { | |
117 | int ret; | |
118 | ||
49143585 | 119 | ret = mv88e6xxx_phy_page_read(ds, 0, 6, 26); |
276db3b1 GR |
120 | if (ret < 0) |
121 | return ret; | |
122 | temp = clamp_val(DIV_ROUND_CLOSEST(temp, 5) + 5, 0, 0x1f); | |
49143585 | 123 | return mv88e6xxx_phy_page_write(ds, 0, 6, 26, |
276db3b1 GR |
124 | (ret & 0xe0ff) | (temp << 8)); |
125 | } | |
126 | ||
127 | static int mv88e6352_get_temp_alarm(struct dsa_switch *ds, bool *alarm) | |
128 | { | |
129 | int ret; | |
130 | ||
131 | *alarm = false; | |
132 | ||
49143585 | 133 | ret = mv88e6xxx_phy_page_read(ds, 0, 6, 26); |
276db3b1 GR |
134 | if (ret < 0) |
135 | return ret; | |
136 | ||
137 | *alarm = !!(ret & 0x40); | |
138 | ||
139 | return 0; | |
140 | } | |
141 | #endif /* CONFIG_NET_DSA_HWMON */ | |
142 | ||
3ad50cca GR |
143 | static int mv88e6352_setup(struct dsa_switch *ds) |
144 | { | |
145 | struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); | |
146 | int ret; | |
3ad50cca | 147 | |
acdaffcc GR |
148 | ret = mv88e6xxx_setup_common(ds); |
149 | if (ret < 0) | |
150 | return ret; | |
151 | ||
44e50ddb AL |
152 | ps->num_ports = 7; |
153 | ||
33b43df4 | 154 | mutex_init(&ps->eeprom_mutex); |
3ad50cca | 155 | |
143a8307 | 156 | ret = mv88e6xxx_switch_reset(ds, true); |
3ad50cca GR |
157 | if (ret < 0) |
158 | return ret; | |
159 | ||
3ad50cca GR |
160 | ret = mv88e6352_setup_global(ds); |
161 | if (ret < 0) | |
162 | return ret; | |
163 | ||
dbde9e66 | 164 | return mv88e6xxx_setup_ports(ds); |
3ad50cca GR |
165 | } |
166 | ||
33b43df4 GR |
167 | static int mv88e6352_read_eeprom_word(struct dsa_switch *ds, int addr) |
168 | { | |
169 | struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); | |
170 | int ret; | |
171 | ||
172 | mutex_lock(&ps->eeprom_mutex); | |
173 | ||
174 | ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, 0x14, | |
175 | 0xc000 | (addr & 0xff)); | |
176 | if (ret < 0) | |
177 | goto error; | |
178 | ||
f3044683 | 179 | ret = mv88e6xxx_eeprom_busy_wait(ds); |
33b43df4 GR |
180 | if (ret < 0) |
181 | goto error; | |
182 | ||
183 | ret = mv88e6xxx_reg_read(ds, REG_GLOBAL2, 0x15); | |
184 | error: | |
185 | mutex_unlock(&ps->eeprom_mutex); | |
186 | return ret; | |
187 | } | |
188 | ||
189 | static int mv88e6352_get_eeprom(struct dsa_switch *ds, | |
190 | struct ethtool_eeprom *eeprom, u8 *data) | |
191 | { | |
192 | int offset; | |
193 | int len; | |
194 | int ret; | |
195 | ||
196 | offset = eeprom->offset; | |
197 | len = eeprom->len; | |
198 | eeprom->len = 0; | |
199 | ||
200 | eeprom->magic = 0xc3ec4951; | |
201 | ||
f3044683 | 202 | ret = mv88e6xxx_eeprom_load_wait(ds); |
33b43df4 GR |
203 | if (ret < 0) |
204 | return ret; | |
205 | ||
206 | if (offset & 1) { | |
207 | int word; | |
208 | ||
209 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
210 | if (word < 0) | |
211 | return word; | |
212 | ||
213 | *data++ = (word >> 8) & 0xff; | |
214 | ||
215 | offset++; | |
216 | len--; | |
217 | eeprom->len++; | |
218 | } | |
219 | ||
220 | while (len >= 2) { | |
221 | int word; | |
222 | ||
223 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
224 | if (word < 0) | |
225 | return word; | |
226 | ||
227 | *data++ = word & 0xff; | |
228 | *data++ = (word >> 8) & 0xff; | |
229 | ||
230 | offset += 2; | |
231 | len -= 2; | |
232 | eeprom->len += 2; | |
233 | } | |
234 | ||
235 | if (len) { | |
236 | int word; | |
237 | ||
238 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
239 | if (word < 0) | |
240 | return word; | |
241 | ||
242 | *data++ = word & 0xff; | |
243 | ||
244 | offset++; | |
245 | len--; | |
246 | eeprom->len++; | |
247 | } | |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
252 | static int mv88e6352_eeprom_is_readonly(struct dsa_switch *ds) | |
253 | { | |
254 | int ret; | |
255 | ||
256 | ret = mv88e6xxx_reg_read(ds, REG_GLOBAL2, 0x14); | |
257 | if (ret < 0) | |
258 | return ret; | |
259 | ||
260 | if (!(ret & 0x0400)) | |
261 | return -EROFS; | |
262 | ||
263 | return 0; | |
264 | } | |
265 | ||
266 | static int mv88e6352_write_eeprom_word(struct dsa_switch *ds, int addr, | |
267 | u16 data) | |
268 | { | |
269 | struct mv88e6xxx_priv_state *ps = ds_to_priv(ds); | |
270 | int ret; | |
271 | ||
272 | mutex_lock(&ps->eeprom_mutex); | |
273 | ||
274 | ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, 0x15, data); | |
275 | if (ret < 0) | |
276 | goto error; | |
277 | ||
278 | ret = mv88e6xxx_reg_write(ds, REG_GLOBAL2, 0x14, | |
279 | 0xb000 | (addr & 0xff)); | |
280 | if (ret < 0) | |
281 | goto error; | |
282 | ||
f3044683 | 283 | ret = mv88e6xxx_eeprom_busy_wait(ds); |
33b43df4 GR |
284 | error: |
285 | mutex_unlock(&ps->eeprom_mutex); | |
286 | return ret; | |
287 | } | |
288 | ||
289 | static int mv88e6352_set_eeprom(struct dsa_switch *ds, | |
290 | struct ethtool_eeprom *eeprom, u8 *data) | |
291 | { | |
292 | int offset; | |
293 | int ret; | |
294 | int len; | |
295 | ||
296 | if (eeprom->magic != 0xc3ec4951) | |
297 | return -EINVAL; | |
298 | ||
299 | ret = mv88e6352_eeprom_is_readonly(ds); | |
300 | if (ret) | |
301 | return ret; | |
302 | ||
303 | offset = eeprom->offset; | |
304 | len = eeprom->len; | |
305 | eeprom->len = 0; | |
306 | ||
f3044683 | 307 | ret = mv88e6xxx_eeprom_load_wait(ds); |
33b43df4 GR |
308 | if (ret < 0) |
309 | return ret; | |
310 | ||
311 | if (offset & 1) { | |
312 | int word; | |
313 | ||
314 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
315 | if (word < 0) | |
316 | return word; | |
317 | ||
318 | word = (*data++ << 8) | (word & 0xff); | |
319 | ||
320 | ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word); | |
321 | if (ret < 0) | |
322 | return ret; | |
323 | ||
324 | offset++; | |
325 | len--; | |
326 | eeprom->len++; | |
327 | } | |
328 | ||
329 | while (len >= 2) { | |
330 | int word; | |
331 | ||
332 | word = *data++; | |
333 | word |= *data++ << 8; | |
334 | ||
335 | ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word); | |
336 | if (ret < 0) | |
337 | return ret; | |
338 | ||
339 | offset += 2; | |
340 | len -= 2; | |
341 | eeprom->len += 2; | |
342 | } | |
343 | ||
344 | if (len) { | |
345 | int word; | |
346 | ||
347 | word = mv88e6352_read_eeprom_word(ds, offset >> 1); | |
348 | if (word < 0) | |
349 | return word; | |
350 | ||
351 | word = (word & 0xff00) | *data++; | |
352 | ||
353 | ret = mv88e6352_write_eeprom_word(ds, offset >> 1, word); | |
354 | if (ret < 0) | |
355 | return ret; | |
356 | ||
357 | offset++; | |
358 | len--; | |
359 | eeprom->len++; | |
360 | } | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
3ad50cca GR |
365 | struct dsa_switch_driver mv88e6352_switch_driver = { |
366 | .tag_protocol = DSA_TAG_PROTO_EDSA, | |
367 | .priv_size = sizeof(struct mv88e6xxx_priv_state), | |
368 | .probe = mv88e6352_probe, | |
369 | .setup = mv88e6352_setup, | |
370 | .set_addr = mv88e6xxx_set_addr_indirect, | |
fd3a0ee4 AL |
371 | .phy_read = mv88e6xxx_phy_read_indirect, |
372 | .phy_write = mv88e6xxx_phy_write_indirect, | |
3ad50cca | 373 | .poll_link = mv88e6xxx_poll_link, |
e413e7e1 AL |
374 | .get_strings = mv88e6xxx_get_strings, |
375 | .get_ethtool_stats = mv88e6xxx_get_ethtool_stats, | |
376 | .get_sset_count = mv88e6xxx_get_sset_count, | |
04b0a80b GR |
377 | .set_eee = mv88e6xxx_set_eee, |
378 | .get_eee = mv88e6xxx_get_eee, | |
276db3b1 GR |
379 | #ifdef CONFIG_NET_DSA_HWMON |
380 | .get_temp = mv88e6352_get_temp, | |
381 | .get_temp_limit = mv88e6352_get_temp_limit, | |
382 | .set_temp_limit = mv88e6352_set_temp_limit, | |
383 | .get_temp_alarm = mv88e6352_get_temp_alarm, | |
384 | #endif | |
33b43df4 GR |
385 | .get_eeprom = mv88e6352_get_eeprom, |
386 | .set_eeprom = mv88e6352_set_eeprom, | |
95d08b5a GR |
387 | .get_regs_len = mv88e6xxx_get_regs_len, |
388 | .get_regs = mv88e6xxx_get_regs, | |
3f244abb GR |
389 | .port_join_bridge = mv88e6xxx_join_bridge, |
390 | .port_leave_bridge = mv88e6xxx_leave_bridge, | |
391 | .port_stp_update = mv88e6xxx_port_stp_update, | |
4f431e56 GR |
392 | .fdb_add = mv88e6xxx_port_fdb_add, |
393 | .fdb_del = mv88e6xxx_port_fdb_del, | |
394 | .fdb_getnext = mv88e6xxx_port_fdb_getnext, | |
3ad50cca GR |
395 | }; |
396 | ||
397 | MODULE_ALIAS("platform:mv88e6352"); | |
1636d883 | 398 | MODULE_ALIAS("platform:mv88e6172"); |