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1/*
2 * Distributed Switch Architecture loopback driver
3 *
4 * Copyright (C) 2016, Florian Fainelli <f.fainelli@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11
12#include <linux/platform_device.h>
13#include <linux/netdevice.h>
14#include <linux/phy.h>
15#include <linux/phy_fixed.h>
16#include <linux/export.h>
17#include <linux/ethtool.h>
18#include <linux/workqueue.h>
19#include <linux/module.h>
20#include <linux/if_bridge.h>
21#include <net/dsa.h>
22
23#include "dsa_loop.h"
24
25struct dsa_loop_vlan {
26 u16 members;
27 u16 untagged;
28};
29
30struct dsa_loop_mib_entry {
31 char name[ETH_GSTRING_LEN];
32 unsigned long val;
33};
34
35enum dsa_loop_mib_counters {
36 DSA_LOOP_PHY_READ_OK,
37 DSA_LOOP_PHY_READ_ERR,
38 DSA_LOOP_PHY_WRITE_OK,
39 DSA_LOOP_PHY_WRITE_ERR,
40 __DSA_LOOP_CNT_MAX,
41};
42
43static struct dsa_loop_mib_entry dsa_loop_mibs[] = {
44 [DSA_LOOP_PHY_READ_OK] = { "phy_read_ok", },
45 [DSA_LOOP_PHY_READ_ERR] = { "phy_read_err", },
46 [DSA_LOOP_PHY_WRITE_OK] = { "phy_write_ok", },
47 [DSA_LOOP_PHY_WRITE_ERR] = { "phy_write_err", },
48};
49
50struct dsa_loop_port {
51 struct dsa_loop_mib_entry mib[__DSA_LOOP_CNT_MAX];
52};
53
54#define DSA_LOOP_VLANS 5
55
56struct dsa_loop_priv {
57 struct mii_bus *bus;
58 unsigned int port_base;
59 struct dsa_loop_vlan vlans[DSA_LOOP_VLANS];
60 struct net_device *netdev;
61 struct dsa_loop_port ports[DSA_MAX_PORTS];
62 u16 pvid;
63};
64
65static struct phy_device *phydevs[PHY_MAX_ADDR];
66
67static enum dsa_tag_protocol dsa_loop_get_protocol(struct dsa_switch *ds,
68 int port)
69{
70 dev_dbg(ds->dev, "%s\n", __func__);
71
72 return DSA_TAG_PROTO_NONE;
73}
74
75static int dsa_loop_setup(struct dsa_switch *ds)
76{
77 struct dsa_loop_priv *ps = ds->priv;
78 unsigned int i;
79
80 for (i = 0; i < ds->num_ports; i++)
81 memcpy(ps->ports[i].mib, dsa_loop_mibs,
82 sizeof(dsa_loop_mibs));
83
84 dev_dbg(ds->dev, "%s\n", __func__);
85
86 return 0;
87}
88
89static int dsa_loop_get_sset_count(struct dsa_switch *ds, int port)
90{
91 return __DSA_LOOP_CNT_MAX;
92}
93
94static void dsa_loop_get_strings(struct dsa_switch *ds, int port, uint8_t *data)
95{
96 struct dsa_loop_priv *ps = ds->priv;
97 unsigned int i;
98
99 for (i = 0; i < __DSA_LOOP_CNT_MAX; i++)
100 memcpy(data + i * ETH_GSTRING_LEN,
101 ps->ports[port].mib[i].name, ETH_GSTRING_LEN);
102}
103
104static void dsa_loop_get_ethtool_stats(struct dsa_switch *ds, int port,
105 uint64_t *data)
106{
107 struct dsa_loop_priv *ps = ds->priv;
108 unsigned int i;
109
110 for (i = 0; i < __DSA_LOOP_CNT_MAX; i++)
111 data[i] = ps->ports[port].mib[i].val;
112}
113
114static int dsa_loop_phy_read(struct dsa_switch *ds, int port, int regnum)
115{
116 struct dsa_loop_priv *ps = ds->priv;
117 struct mii_bus *bus = ps->bus;
118 int ret;
119
120 dev_dbg(ds->dev, "%s\n", __func__);
121
122 ret = mdiobus_read_nested(bus, ps->port_base + port, regnum);
123 if (ret < 0)
124 ps->ports[port].mib[DSA_LOOP_PHY_READ_ERR].val++;
125 else
126 ps->ports[port].mib[DSA_LOOP_PHY_READ_OK].val++;
127
128 return ret;
129}
130
131static int dsa_loop_phy_write(struct dsa_switch *ds, int port,
132 int regnum, u16 value)
133{
134 struct dsa_loop_priv *ps = ds->priv;
135 struct mii_bus *bus = ps->bus;
136 int ret;
137
138 dev_dbg(ds->dev, "%s\n", __func__);
139
140 ret = mdiobus_write_nested(bus, ps->port_base + port, regnum, value);
141 if (ret < 0)
142 ps->ports[port].mib[DSA_LOOP_PHY_WRITE_ERR].val++;
143 else
144 ps->ports[port].mib[DSA_LOOP_PHY_WRITE_OK].val++;
145
146 return ret;
147}
148
149static int dsa_loop_port_bridge_join(struct dsa_switch *ds, int port,
150 struct net_device *bridge)
151{
152 dev_dbg(ds->dev, "%s\n", __func__);
153
154 return 0;
155}
156
157static void dsa_loop_port_bridge_leave(struct dsa_switch *ds, int port,
158 struct net_device *bridge)
159{
160 dev_dbg(ds->dev, "%s\n", __func__);
161}
162
163static void dsa_loop_port_stp_state_set(struct dsa_switch *ds, int port,
164 u8 state)
165{
166 dev_dbg(ds->dev, "%s\n", __func__);
167}
168
169static int dsa_loop_port_vlan_filtering(struct dsa_switch *ds, int port,
170 bool vlan_filtering)
171{
172 dev_dbg(ds->dev, "%s\n", __func__);
173
174 return 0;
175}
176
177static int
178dsa_loop_port_vlan_prepare(struct dsa_switch *ds, int port,
179 const struct switchdev_obj_port_vlan *vlan)
180{
181 struct dsa_loop_priv *ps = ds->priv;
182 struct mii_bus *bus = ps->bus;
183
184 dev_dbg(ds->dev, "%s\n", __func__);
185
186 /* Just do a sleeping operation to make lockdep checks effective */
187 mdiobus_read(bus, ps->port_base + port, MII_BMSR);
188
189 if (vlan->vid_end > DSA_LOOP_VLANS)
190 return -ERANGE;
191
192 return 0;
193}
194
195static void dsa_loop_port_vlan_add(struct dsa_switch *ds, int port,
196 const struct switchdev_obj_port_vlan *vlan)
197{
198 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
199 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
200 struct dsa_loop_priv *ps = ds->priv;
201 struct mii_bus *bus = ps->bus;
202 struct dsa_loop_vlan *vl;
203 u16 vid;
204
205 dev_dbg(ds->dev, "%s\n", __func__);
206
207 /* Just do a sleeping operation to make lockdep checks effective */
208 mdiobus_read(bus, ps->port_base + port, MII_BMSR);
209
210 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
211 vl = &ps->vlans[vid];
212
213 vl->members |= BIT(port);
214 if (untagged)
215 vl->untagged |= BIT(port);
216 else
217 vl->untagged &= ~BIT(port);
218 }
219
220 if (pvid)
221 ps->pvid = vid;
222}
223
224static int dsa_loop_port_vlan_del(struct dsa_switch *ds, int port,
225 const struct switchdev_obj_port_vlan *vlan)
226{
227 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
228 struct dsa_loop_priv *ps = ds->priv;
229 struct mii_bus *bus = ps->bus;
230 struct dsa_loop_vlan *vl;
231 u16 vid, pvid = ps->pvid;
232
233 dev_dbg(ds->dev, "%s\n", __func__);
234
235 /* Just do a sleeping operation to make lockdep checks effective */
236 mdiobus_read(bus, ps->port_base + port, MII_BMSR);
237
238 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
239 vl = &ps->vlans[vid];
240
241 vl->members &= ~BIT(port);
242 if (untagged)
243 vl->untagged &= ~BIT(port);
244
245 if (pvid == vid)
246 pvid = 1;
247 }
248 ps->pvid = pvid;
249
250 return 0;
251}
252
253static const struct dsa_switch_ops dsa_loop_driver = {
254 .get_tag_protocol = dsa_loop_get_protocol,
255 .setup = dsa_loop_setup,
256 .get_strings = dsa_loop_get_strings,
257 .get_ethtool_stats = dsa_loop_get_ethtool_stats,
258 .get_sset_count = dsa_loop_get_sset_count,
259 .phy_read = dsa_loop_phy_read,
260 .phy_write = dsa_loop_phy_write,
261 .port_bridge_join = dsa_loop_port_bridge_join,
262 .port_bridge_leave = dsa_loop_port_bridge_leave,
263 .port_stp_state_set = dsa_loop_port_stp_state_set,
264 .port_vlan_filtering = dsa_loop_port_vlan_filtering,
265 .port_vlan_prepare = dsa_loop_port_vlan_prepare,
266 .port_vlan_add = dsa_loop_port_vlan_add,
267 .port_vlan_del = dsa_loop_port_vlan_del,
268};
269
270static int dsa_loop_drv_probe(struct mdio_device *mdiodev)
271{
272 struct dsa_loop_pdata *pdata = mdiodev->dev.platform_data;
273 struct dsa_loop_priv *ps;
274 struct dsa_switch *ds;
275
276 if (!pdata)
277 return -ENODEV;
278
279 dev_info(&mdiodev->dev, "%s: 0x%0x\n",
280 pdata->name, pdata->enabled_ports);
281
282 ds = dsa_switch_alloc(&mdiodev->dev, DSA_MAX_PORTS);
283 if (!ds)
284 return -ENOMEM;
285
286 ps = devm_kzalloc(&mdiodev->dev, sizeof(*ps), GFP_KERNEL);
287 if (!ps)
288 return -ENOMEM;
289
290 ps->netdev = dev_get_by_name(&init_net, pdata->netdev);
291 if (!ps->netdev)
292 return -EPROBE_DEFER;
293
294 pdata->cd.netdev[DSA_LOOP_CPU_PORT] = &ps->netdev->dev;
295
296 ds->dev = &mdiodev->dev;
297 ds->ops = &dsa_loop_driver;
298 ds->priv = ps;
299 ps->bus = mdiodev->bus;
300
301 dev_set_drvdata(&mdiodev->dev, ds);
302
303 return dsa_register_switch(ds);
304}
305
306static void dsa_loop_drv_remove(struct mdio_device *mdiodev)
307{
308 struct dsa_switch *ds = dev_get_drvdata(&mdiodev->dev);
309 struct dsa_loop_priv *ps = ds->priv;
310
311 dsa_unregister_switch(ds);
312 dev_put(ps->netdev);
313}
314
315static struct mdio_driver dsa_loop_drv = {
316 .mdiodrv.driver = {
317 .name = "dsa-loop",
318 },
319 .probe = dsa_loop_drv_probe,
320 .remove = dsa_loop_drv_remove,
321};
322
323#define NUM_FIXED_PHYS (DSA_LOOP_NUM_PORTS - 2)
324
325static int __init dsa_loop_init(void)
326{
327 struct fixed_phy_status status = {
328 .link = 1,
329 .speed = SPEED_100,
330 .duplex = DUPLEX_FULL,
331 };
332 unsigned int i;
333
334 for (i = 0; i < NUM_FIXED_PHYS; i++)
335 phydevs[i] = fixed_phy_register(PHY_POLL, &status, -1, NULL);
336
337 return mdio_driver_register(&dsa_loop_drv);
338}
339module_init(dsa_loop_init);
340
341static void __exit dsa_loop_exit(void)
342{
343 unsigned int i;
344
345 mdio_driver_unregister(&dsa_loop_drv);
346 for (i = 0; i < NUM_FIXED_PHYS; i++)
347 if (!IS_ERR(phydevs[i]))
348 fixed_phy_unregister(phydevs[i]);
349}
350module_exit(dsa_loop_exit);
351
352MODULE_LICENSE("GPL");
353MODULE_AUTHOR("Florian Fainelli");
354MODULE_DESCRIPTION("DSA loopback driver");
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Distributed Switch Architecture loopback driver
4 *
5 * Copyright (C) 2016, Florian Fainelli <f.fainelli@gmail.com>
6 */
7
8#include <linux/platform_device.h>
9#include <linux/netdevice.h>
10#include <linux/phy.h>
11#include <linux/phy_fixed.h>
12#include <linux/export.h>
13#include <linux/ethtool.h>
14#include <linux/workqueue.h>
15#include <linux/module.h>
16#include <linux/if_bridge.h>
17#include <net/dsa.h>
18
19#include "dsa_loop.h"
20
21struct dsa_loop_vlan {
22 u16 members;
23 u16 untagged;
24};
25
26struct dsa_loop_mib_entry {
27 char name[ETH_GSTRING_LEN];
28 unsigned long val;
29};
30
31enum dsa_loop_mib_counters {
32 DSA_LOOP_PHY_READ_OK,
33 DSA_LOOP_PHY_READ_ERR,
34 DSA_LOOP_PHY_WRITE_OK,
35 DSA_LOOP_PHY_WRITE_ERR,
36 __DSA_LOOP_CNT_MAX,
37};
38
39static struct dsa_loop_mib_entry dsa_loop_mibs[] = {
40 [DSA_LOOP_PHY_READ_OK] = { "phy_read_ok", },
41 [DSA_LOOP_PHY_READ_ERR] = { "phy_read_err", },
42 [DSA_LOOP_PHY_WRITE_OK] = { "phy_write_ok", },
43 [DSA_LOOP_PHY_WRITE_ERR] = { "phy_write_err", },
44};
45
46struct dsa_loop_port {
47 struct dsa_loop_mib_entry mib[__DSA_LOOP_CNT_MAX];
48};
49
50#define DSA_LOOP_VLANS 5
51
52struct dsa_loop_priv {
53 struct mii_bus *bus;
54 unsigned int port_base;
55 struct dsa_loop_vlan vlans[DSA_LOOP_VLANS];
56 struct net_device *netdev;
57 struct dsa_loop_port ports[DSA_MAX_PORTS];
58 u16 pvid;
59};
60
61static struct phy_device *phydevs[PHY_MAX_ADDR];
62
63static enum dsa_tag_protocol dsa_loop_get_protocol(struct dsa_switch *ds,
64 int port)
65{
66 dev_dbg(ds->dev, "%s: port: %d\n", __func__, port);
67
68 return DSA_TAG_PROTO_NONE;
69}
70
71static int dsa_loop_setup(struct dsa_switch *ds)
72{
73 struct dsa_loop_priv *ps = ds->priv;
74 unsigned int i;
75
76 for (i = 0; i < ds->num_ports; i++)
77 memcpy(ps->ports[i].mib, dsa_loop_mibs,
78 sizeof(dsa_loop_mibs));
79
80 dev_dbg(ds->dev, "%s\n", __func__);
81
82 return 0;
83}
84
85static int dsa_loop_get_sset_count(struct dsa_switch *ds, int port, int sset)
86{
87 if (sset != ETH_SS_STATS && sset != ETH_SS_PHY_STATS)
88 return 0;
89
90 return __DSA_LOOP_CNT_MAX;
91}
92
93static void dsa_loop_get_strings(struct dsa_switch *ds, int port,
94 u32 stringset, uint8_t *data)
95{
96 struct dsa_loop_priv *ps = ds->priv;
97 unsigned int i;
98
99 if (stringset != ETH_SS_STATS && stringset != ETH_SS_PHY_STATS)
100 return;
101
102 for (i = 0; i < __DSA_LOOP_CNT_MAX; i++)
103 memcpy(data + i * ETH_GSTRING_LEN,
104 ps->ports[port].mib[i].name, ETH_GSTRING_LEN);
105}
106
107static void dsa_loop_get_ethtool_stats(struct dsa_switch *ds, int port,
108 uint64_t *data)
109{
110 struct dsa_loop_priv *ps = ds->priv;
111 unsigned int i;
112
113 for (i = 0; i < __DSA_LOOP_CNT_MAX; i++)
114 data[i] = ps->ports[port].mib[i].val;
115}
116
117static int dsa_loop_phy_read(struct dsa_switch *ds, int port, int regnum)
118{
119 struct dsa_loop_priv *ps = ds->priv;
120 struct mii_bus *bus = ps->bus;
121 int ret;
122
123 ret = mdiobus_read_nested(bus, ps->port_base + port, regnum);
124 if (ret < 0)
125 ps->ports[port].mib[DSA_LOOP_PHY_READ_ERR].val++;
126 else
127 ps->ports[port].mib[DSA_LOOP_PHY_READ_OK].val++;
128
129 return ret;
130}
131
132static int dsa_loop_phy_write(struct dsa_switch *ds, int port,
133 int regnum, u16 value)
134{
135 struct dsa_loop_priv *ps = ds->priv;
136 struct mii_bus *bus = ps->bus;
137 int ret;
138
139 ret = mdiobus_write_nested(bus, ps->port_base + port, regnum, value);
140 if (ret < 0)
141 ps->ports[port].mib[DSA_LOOP_PHY_WRITE_ERR].val++;
142 else
143 ps->ports[port].mib[DSA_LOOP_PHY_WRITE_OK].val++;
144
145 return ret;
146}
147
148static int dsa_loop_port_bridge_join(struct dsa_switch *ds, int port,
149 struct net_device *bridge)
150{
151 dev_dbg(ds->dev, "%s: port: %d, bridge: %s\n",
152 __func__, port, bridge->name);
153
154 return 0;
155}
156
157static void dsa_loop_port_bridge_leave(struct dsa_switch *ds, int port,
158 struct net_device *bridge)
159{
160 dev_dbg(ds->dev, "%s: port: %d, bridge: %s\n",
161 __func__, port, bridge->name);
162}
163
164static void dsa_loop_port_stp_state_set(struct dsa_switch *ds, int port,
165 u8 state)
166{
167 dev_dbg(ds->dev, "%s: port: %d, state: %d\n",
168 __func__, port, state);
169}
170
171static int dsa_loop_port_vlan_filtering(struct dsa_switch *ds, int port,
172 bool vlan_filtering)
173{
174 dev_dbg(ds->dev, "%s: port: %d, vlan_filtering: %d\n",
175 __func__, port, vlan_filtering);
176
177 return 0;
178}
179
180static int
181dsa_loop_port_vlan_prepare(struct dsa_switch *ds, int port,
182 const struct switchdev_obj_port_vlan *vlan)
183{
184 struct dsa_loop_priv *ps = ds->priv;
185 struct mii_bus *bus = ps->bus;
186
187 dev_dbg(ds->dev, "%s: port: %d, vlan: %d-%d",
188 __func__, port, vlan->vid_begin, vlan->vid_end);
189
190 /* Just do a sleeping operation to make lockdep checks effective */
191 mdiobus_read(bus, ps->port_base + port, MII_BMSR);
192
193 if (vlan->vid_end > DSA_LOOP_VLANS)
194 return -ERANGE;
195
196 return 0;
197}
198
199static void dsa_loop_port_vlan_add(struct dsa_switch *ds, int port,
200 const struct switchdev_obj_port_vlan *vlan)
201{
202 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
203 bool pvid = vlan->flags & BRIDGE_VLAN_INFO_PVID;
204 struct dsa_loop_priv *ps = ds->priv;
205 struct mii_bus *bus = ps->bus;
206 struct dsa_loop_vlan *vl;
207 u16 vid;
208
209 /* Just do a sleeping operation to make lockdep checks effective */
210 mdiobus_read(bus, ps->port_base + port, MII_BMSR);
211
212 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
213 vl = &ps->vlans[vid];
214
215 vl->members |= BIT(port);
216 if (untagged)
217 vl->untagged |= BIT(port);
218 else
219 vl->untagged &= ~BIT(port);
220
221 dev_dbg(ds->dev, "%s: port: %d vlan: %d, %stagged, pvid: %d\n",
222 __func__, port, vid, untagged ? "un" : "", pvid);
223 }
224
225 if (pvid)
226 ps->pvid = vid;
227}
228
229static int dsa_loop_port_vlan_del(struct dsa_switch *ds, int port,
230 const struct switchdev_obj_port_vlan *vlan)
231{
232 bool untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
233 struct dsa_loop_priv *ps = ds->priv;
234 struct mii_bus *bus = ps->bus;
235 struct dsa_loop_vlan *vl;
236 u16 vid, pvid = ps->pvid;
237
238 /* Just do a sleeping operation to make lockdep checks effective */
239 mdiobus_read(bus, ps->port_base + port, MII_BMSR);
240
241 for (vid = vlan->vid_begin; vid <= vlan->vid_end; ++vid) {
242 vl = &ps->vlans[vid];
243
244 vl->members &= ~BIT(port);
245 if (untagged)
246 vl->untagged &= ~BIT(port);
247
248 if (pvid == vid)
249 pvid = 1;
250
251 dev_dbg(ds->dev, "%s: port: %d vlan: %d, %stagged, pvid: %d\n",
252 __func__, port, vid, untagged ? "un" : "", pvid);
253 }
254 ps->pvid = pvid;
255
256 return 0;
257}
258
259static const struct dsa_switch_ops dsa_loop_driver = {
260 .get_tag_protocol = dsa_loop_get_protocol,
261 .setup = dsa_loop_setup,
262 .get_strings = dsa_loop_get_strings,
263 .get_ethtool_stats = dsa_loop_get_ethtool_stats,
264 .get_sset_count = dsa_loop_get_sset_count,
265 .get_ethtool_phy_stats = dsa_loop_get_ethtool_stats,
266 .phy_read = dsa_loop_phy_read,
267 .phy_write = dsa_loop_phy_write,
268 .port_bridge_join = dsa_loop_port_bridge_join,
269 .port_bridge_leave = dsa_loop_port_bridge_leave,
270 .port_stp_state_set = dsa_loop_port_stp_state_set,
271 .port_vlan_filtering = dsa_loop_port_vlan_filtering,
272 .port_vlan_prepare = dsa_loop_port_vlan_prepare,
273 .port_vlan_add = dsa_loop_port_vlan_add,
274 .port_vlan_del = dsa_loop_port_vlan_del,
275};
276
277static int dsa_loop_drv_probe(struct mdio_device *mdiodev)
278{
279 struct dsa_loop_pdata *pdata = mdiodev->dev.platform_data;
280 struct dsa_loop_priv *ps;
281 struct dsa_switch *ds;
282
283 if (!pdata)
284 return -ENODEV;
285
286 dev_info(&mdiodev->dev, "%s: 0x%0x\n",
287 pdata->name, pdata->enabled_ports);
288
289 ds = dsa_switch_alloc(&mdiodev->dev, DSA_MAX_PORTS);
290 if (!ds)
291 return -ENOMEM;
292
293 ps = devm_kzalloc(&mdiodev->dev, sizeof(*ps), GFP_KERNEL);
294 if (!ps)
295 return -ENOMEM;
296
297 ps->netdev = dev_get_by_name(&init_net, pdata->netdev);
298 if (!ps->netdev)
299 return -EPROBE_DEFER;
300
301 pdata->cd.netdev[DSA_LOOP_CPU_PORT] = &ps->netdev->dev;
302
303 ds->dev = &mdiodev->dev;
304 ds->ops = &dsa_loop_driver;
305 ds->priv = ps;
306 ps->bus = mdiodev->bus;
307
308 dev_set_drvdata(&mdiodev->dev, ds);
309
310 return dsa_register_switch(ds);
311}
312
313static void dsa_loop_drv_remove(struct mdio_device *mdiodev)
314{
315 struct dsa_switch *ds = dev_get_drvdata(&mdiodev->dev);
316 struct dsa_loop_priv *ps = ds->priv;
317
318 dsa_unregister_switch(ds);
319 dev_put(ps->netdev);
320}
321
322static struct mdio_driver dsa_loop_drv = {
323 .mdiodrv.driver = {
324 .name = "dsa-loop",
325 },
326 .probe = dsa_loop_drv_probe,
327 .remove = dsa_loop_drv_remove,
328};
329
330#define NUM_FIXED_PHYS (DSA_LOOP_NUM_PORTS - 2)
331
332static int __init dsa_loop_init(void)
333{
334 struct fixed_phy_status status = {
335 .link = 1,
336 .speed = SPEED_100,
337 .duplex = DUPLEX_FULL,
338 };
339 unsigned int i;
340
341 for (i = 0; i < NUM_FIXED_PHYS; i++)
342 phydevs[i] = fixed_phy_register(PHY_POLL, &status, NULL);
343
344 return mdio_driver_register(&dsa_loop_drv);
345}
346module_init(dsa_loop_init);
347
348static void __exit dsa_loop_exit(void)
349{
350 unsigned int i;
351
352 mdio_driver_unregister(&dsa_loop_drv);
353 for (i = 0; i < NUM_FIXED_PHYS; i++)
354 if (!IS_ERR(phydevs[i]))
355 fixed_phy_unregister(phydevs[i]);
356}
357module_exit(dsa_loop_exit);
358
359MODULE_LICENSE("GPL");
360MODULE_AUTHOR("Florian Fainelli");
361MODULE_DESCRIPTION("DSA loopback driver");