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11#include <linux/delay.h>
12#include <linux/jiffies.h>
13#include <linux/list.h>
14#include <linux/module.h>
15#include <linux/netdevice.h>
16#include <linux/phy.h>
17#include <net/dsa.h>
18#include "mv88e6060.h"
19
20static int reg_read(struct dsa_switch *ds, int addr, int reg)
21{
22 struct mv88e6060_priv *priv = ds->priv;
23
24 return mdiobus_read_nested(priv->bus, priv->sw_addr + addr, reg);
25}
26
27#define REG_READ(addr, reg) \
28 ({ \
29 int __ret; \
30 \
31 __ret = reg_read(ds, addr, reg); \
32 if (__ret < 0) \
33 return __ret; \
34 __ret; \
35 })
36
37
38static int reg_write(struct dsa_switch *ds, int addr, int reg, u16 val)
39{
40 struct mv88e6060_priv *priv = ds->priv;
41
42 return mdiobus_write_nested(priv->bus, priv->sw_addr + addr, reg, val);
43}
44
45#define REG_WRITE(addr, reg, val) \
46 ({ \
47 int __ret; \
48 \
49 __ret = reg_write(ds, addr, reg, val); \
50 if (__ret < 0) \
51 return __ret; \
52 })
53
54static const char *mv88e6060_get_name(struct mii_bus *bus, int sw_addr)
55{
56 int ret;
57
58 ret = mdiobus_read(bus, sw_addr + REG_PORT(0), PORT_SWITCH_ID);
59 if (ret >= 0) {
60 if (ret == PORT_SWITCH_ID_6060)
61 return "Marvell 88E6060 (A0)";
62 if (ret == PORT_SWITCH_ID_6060_R1 ||
63 ret == PORT_SWITCH_ID_6060_R2)
64 return "Marvell 88E6060 (B0)";
65 if ((ret & PORT_SWITCH_ID_6060_MASK) == PORT_SWITCH_ID_6060)
66 return "Marvell 88E6060";
67 }
68
69 return NULL;
70}
71
72static enum dsa_tag_protocol mv88e6060_get_tag_protocol(struct dsa_switch *ds)
73{
74 return DSA_TAG_PROTO_TRAILER;
75}
76
77static const char *mv88e6060_drv_probe(struct device *dsa_dev,
78 struct device *host_dev, int sw_addr,
79 void **_priv)
80{
81 struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev);
82 struct mv88e6060_priv *priv;
83 const char *name;
84
85 name = mv88e6060_get_name(bus, sw_addr);
86 if (name) {
87 priv = devm_kzalloc(dsa_dev, sizeof(*priv), GFP_KERNEL);
88 if (!priv)
89 return NULL;
90 *_priv = priv;
91 priv->bus = bus;
92 priv->sw_addr = sw_addr;
93 }
94
95 return name;
96}
97
98static int mv88e6060_switch_reset(struct dsa_switch *ds)
99{
100 int i;
101 int ret;
102 unsigned long timeout;
103
104
105 for (i = 0; i < MV88E6060_PORTS; i++) {
106 ret = REG_READ(REG_PORT(i), PORT_CONTROL);
107 REG_WRITE(REG_PORT(i), PORT_CONTROL,
108 ret & ~PORT_CONTROL_STATE_MASK);
109 }
110
111
112 usleep_range(2000, 4000);
113
114
115 REG_WRITE(REG_GLOBAL, GLOBAL_ATU_CONTROL,
116 GLOBAL_ATU_CONTROL_SWRESET |
117 GLOBAL_ATU_CONTROL_ATUSIZE_1024 |
118 GLOBAL_ATU_CONTROL_ATE_AGE_5MIN);
119
120
121 timeout = jiffies + 1 * HZ;
122 while (time_before(jiffies, timeout)) {
123 ret = REG_READ(REG_GLOBAL, GLOBAL_STATUS);
124 if (ret & GLOBAL_STATUS_INIT_READY)
125 break;
126
127 usleep_range(1000, 2000);
128 }
129 if (time_after(jiffies, timeout))
130 return -ETIMEDOUT;
131
132 return 0;
133}
134
135static int mv88e6060_setup_global(struct dsa_switch *ds)
136{
137
138
139
140
141 REG_WRITE(REG_GLOBAL, GLOBAL_CONTROL, GLOBAL_CONTROL_MAX_FRAME_1536);
142
143
144
145
146
147 REG_WRITE(REG_GLOBAL, GLOBAL_ATU_CONTROL,
148 GLOBAL_ATU_CONTROL_ATUSIZE_1024 |
149 GLOBAL_ATU_CONTROL_ATE_AGE_5MIN);
150
151 return 0;
152}
153
154static int mv88e6060_setup_port(struct dsa_switch *ds, int p)
155{
156 int addr = REG_PORT(p);
157
158
159
160
161
162
163 REG_WRITE(addr, PORT_CONTROL,
164 dsa_is_cpu_port(ds, p) ?
165 PORT_CONTROL_TRAILER |
166 PORT_CONTROL_INGRESS_MODE |
167 PORT_CONTROL_STATE_FORWARDING :
168 PORT_CONTROL_STATE_FORWARDING);
169
170
171
172
173
174
175 REG_WRITE(addr, PORT_VLAN_MAP,
176 ((p & 0xf) << PORT_VLAN_MAP_DBNUM_SHIFT) |
177 (dsa_is_cpu_port(ds, p) ?
178 ds->enabled_port_mask :
179 BIT(ds->dst->cpu_dp->index)));
180
181
182
183
184
185
186 REG_WRITE(addr, PORT_ASSOC_VECTOR, BIT(p));
187
188 return 0;
189}
190
191static int mv88e6060_setup(struct dsa_switch *ds)
192{
193 int ret;
194 int i;
195
196 ret = mv88e6060_switch_reset(ds);
197 if (ret < 0)
198 return ret;
199
200
201
202 ret = mv88e6060_setup_global(ds);
203 if (ret < 0)
204 return ret;
205
206 for (i = 0; i < MV88E6060_PORTS; i++) {
207 ret = mv88e6060_setup_port(ds, i);
208 if (ret < 0)
209 return ret;
210 }
211
212 return 0;
213}
214
215static int mv88e6060_set_addr(struct dsa_switch *ds, u8 *addr)
216{
217
218 REG_WRITE(REG_GLOBAL, GLOBAL_MAC_01, (addr[0] << 9) | addr[1]);
219 REG_WRITE(REG_GLOBAL, GLOBAL_MAC_23, (addr[2] << 8) | addr[3]);
220 REG_WRITE(REG_GLOBAL, GLOBAL_MAC_45, (addr[4] << 8) | addr[5]);
221
222 return 0;
223}
224
225static int mv88e6060_port_to_phy_addr(int port)
226{
227 if (port >= 0 && port < MV88E6060_PORTS)
228 return port;
229 return -1;
230}
231
232static int mv88e6060_phy_read(struct dsa_switch *ds, int port, int regnum)
233{
234 int addr;
235
236 addr = mv88e6060_port_to_phy_addr(port);
237 if (addr == -1)
238 return 0xffff;
239
240 return reg_read(ds, addr, regnum);
241}
242
243static int
244mv88e6060_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val)
245{
246 int addr;
247
248 addr = mv88e6060_port_to_phy_addr(port);
249 if (addr == -1)
250 return 0xffff;
251
252 return reg_write(ds, addr, regnum, val);
253}
254
255static const struct dsa_switch_ops mv88e6060_switch_ops = {
256 .get_tag_protocol = mv88e6060_get_tag_protocol,
257 .probe = mv88e6060_drv_probe,
258 .setup = mv88e6060_setup,
259 .set_addr = mv88e6060_set_addr,
260 .phy_read = mv88e6060_phy_read,
261 .phy_write = mv88e6060_phy_write,
262};
263
264static struct dsa_switch_driver mv88e6060_switch_drv = {
265 .ops = &mv88e6060_switch_ops,
266};
267
268static int __init mv88e6060_init(void)
269{
270 register_switch_driver(&mv88e6060_switch_drv);
271 return 0;
272}
273module_init(mv88e6060_init);
274
275static void __exit mv88e6060_cleanup(void)
276{
277 unregister_switch_driver(&mv88e6060_switch_drv);
278}
279module_exit(mv88e6060_cleanup);
280
281MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>");
282MODULE_DESCRIPTION("Driver for Marvell 88E6060 ethernet switch chip");
283MODULE_LICENSE("GPL");
284MODULE_ALIAS("platform:mv88e6060");
285