Commit | Line | Data |
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2f53e904 | 1 | /* Framework for finding and configuring PHYs. |
00db8189 AF |
2 | * Also contains generic PHY driver |
3 | * | |
4 | * Author: Andy Fleming | |
5 | * | |
6 | * Copyright (c) 2004 Freescale Semiconductor, Inc. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | */ | |
8d242488 JP |
14 | |
15 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
16 | ||
00db8189 | 17 | #include <linux/kernel.h> |
00db8189 AF |
18 | #include <linux/string.h> |
19 | #include <linux/errno.h> | |
20 | #include <linux/unistd.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/interrupt.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/delay.h> | |
25 | #include <linux/netdevice.h> | |
26 | #include <linux/etherdevice.h> | |
27 | #include <linux/skbuff.h> | |
00db8189 AF |
28 | #include <linux/mm.h> |
29 | #include <linux/module.h> | |
00db8189 AF |
30 | #include <linux/mii.h> |
31 | #include <linux/ethtool.h> | |
32 | #include <linux/phy.h> | |
124059fd | 33 | #include <linux/mdio.h> |
2f53e904 SS |
34 | #include <linux/io.h> |
35 | #include <linux/uaccess.h> | |
00db8189 | 36 | |
00db8189 | 37 | #include <asm/irq.h> |
00db8189 | 38 | |
afcceaa3 OH |
39 | MODULE_DESCRIPTION("PHY library"); |
40 | MODULE_AUTHOR("Andy Fleming"); | |
41 | MODULE_LICENSE("GPL"); | |
42 | ||
6f4a7f41 AV |
43 | void phy_device_free(struct phy_device *phydev) |
44 | { | |
b2a43191 | 45 | put_device(&phydev->dev); |
6f4a7f41 | 46 | } |
4dea547f | 47 | EXPORT_SYMBOL(phy_device_free); |
6f4a7f41 AV |
48 | |
49 | static void phy_device_release(struct device *dev) | |
50 | { | |
b2a43191 | 51 | kfree(to_phy_device(dev)); |
6f4a7f41 AV |
52 | } |
53 | ||
ab2145ed SX |
54 | enum genphy_driver { |
55 | GENPHY_DRV_1G, | |
124059fd | 56 | GENPHY_DRV_10G, |
ab2145ed SX |
57 | GENPHY_DRV_MAX |
58 | }; | |
59 | ||
60 | static struct phy_driver genphy_driver[GENPHY_DRV_MAX]; | |
4dea547f | 61 | |
f62220d3 AF |
62 | static LIST_HEAD(phy_fixup_list); |
63 | static DEFINE_MUTEX(phy_fixup_lock); | |
64 | ||
2f53e904 SS |
65 | /** |
66 | * phy_register_fixup - creates a new phy_fixup and adds it to the list | |
f62220d3 AF |
67 | * @bus_id: A string which matches phydev->dev.bus_id (or PHY_ANY_ID) |
68 | * @phy_uid: Used to match against phydev->phy_id (the UID of the PHY) | |
2f53e904 | 69 | * It can also be PHY_ANY_UID |
f62220d3 | 70 | * @phy_uid_mask: Applied to phydev->phy_id and fixup->phy_uid before |
2f53e904 | 71 | * comparison |
f62220d3 AF |
72 | * @run: The actual code to be run when a matching PHY is found |
73 | */ | |
74 | int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask, | |
2f53e904 | 75 | int (*run)(struct phy_device *)) |
f62220d3 | 76 | { |
553fe92b | 77 | struct phy_fixup *fixup = kzalloc(sizeof(*fixup), GFP_KERNEL); |
f62220d3 | 78 | |
f62220d3 AF |
79 | if (!fixup) |
80 | return -ENOMEM; | |
81 | ||
fb28ad35 | 82 | strlcpy(fixup->bus_id, bus_id, sizeof(fixup->bus_id)); |
f62220d3 AF |
83 | fixup->phy_uid = phy_uid; |
84 | fixup->phy_uid_mask = phy_uid_mask; | |
85 | fixup->run = run; | |
86 | ||
87 | mutex_lock(&phy_fixup_lock); | |
88 | list_add_tail(&fixup->list, &phy_fixup_list); | |
89 | mutex_unlock(&phy_fixup_lock); | |
90 | ||
91 | return 0; | |
92 | } | |
93 | EXPORT_SYMBOL(phy_register_fixup); | |
94 | ||
95 | /* Registers a fixup to be run on any PHY with the UID in phy_uid */ | |
96 | int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask, | |
2f53e904 | 97 | int (*run)(struct phy_device *)) |
f62220d3 AF |
98 | { |
99 | return phy_register_fixup(PHY_ANY_ID, phy_uid, phy_uid_mask, run); | |
100 | } | |
101 | EXPORT_SYMBOL(phy_register_fixup_for_uid); | |
102 | ||
103 | /* Registers a fixup to be run on the PHY with id string bus_id */ | |
104 | int phy_register_fixup_for_id(const char *bus_id, | |
2f53e904 | 105 | int (*run)(struct phy_device *)) |
f62220d3 AF |
106 | { |
107 | return phy_register_fixup(bus_id, PHY_ANY_UID, 0xffffffff, run); | |
108 | } | |
109 | EXPORT_SYMBOL(phy_register_fixup_for_id); | |
110 | ||
2f53e904 | 111 | /* Returns 1 if fixup matches phydev in bus_id and phy_uid. |
f62220d3 AF |
112 | * Fixups can be set to match any in one or more fields. |
113 | */ | |
114 | static int phy_needs_fixup(struct phy_device *phydev, struct phy_fixup *fixup) | |
115 | { | |
fb28ad35 | 116 | if (strcmp(fixup->bus_id, dev_name(&phydev->dev)) != 0) |
f62220d3 AF |
117 | if (strcmp(fixup->bus_id, PHY_ANY_ID) != 0) |
118 | return 0; | |
119 | ||
120 | if ((fixup->phy_uid & fixup->phy_uid_mask) != | |
2f53e904 | 121 | (phydev->phy_id & fixup->phy_uid_mask)) |
f62220d3 AF |
122 | if (fixup->phy_uid != PHY_ANY_UID) |
123 | return 0; | |
124 | ||
125 | return 1; | |
126 | } | |
127 | ||
128 | /* Runs any matching fixups for this phydev */ | |
fbfcec63 | 129 | static int phy_scan_fixups(struct phy_device *phydev) |
f62220d3 AF |
130 | { |
131 | struct phy_fixup *fixup; | |
132 | ||
133 | mutex_lock(&phy_fixup_lock); | |
134 | list_for_each_entry(fixup, &phy_fixup_list, list) { | |
135 | if (phy_needs_fixup(phydev, fixup)) { | |
553fe92b | 136 | int err = fixup->run(phydev); |
f62220d3 | 137 | |
bc23283c JS |
138 | if (err < 0) { |
139 | mutex_unlock(&phy_fixup_lock); | |
f62220d3 | 140 | return err; |
bc23283c | 141 | } |
f62220d3 AF |
142 | } |
143 | } | |
144 | mutex_unlock(&phy_fixup_lock); | |
145 | ||
146 | return 0; | |
147 | } | |
f62220d3 | 148 | |
ac28b9f8 | 149 | struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id, |
2f53e904 SS |
150 | bool is_c45, |
151 | struct phy_c45_device_ids *c45_ids) | |
11b0bacd VB |
152 | { |
153 | struct phy_device *dev; | |
8626d3b4 | 154 | |
2f53e904 | 155 | /* We allocate the device, and initialize the default values */ |
cd861280 | 156 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
11b0bacd | 157 | if (NULL == dev) |
e109374f | 158 | return (struct phy_device *)PTR_ERR((void *)-ENOMEM); |
11b0bacd | 159 | |
6f4a7f41 AV |
160 | dev->dev.release = phy_device_release; |
161 | ||
11b0bacd VB |
162 | dev->speed = 0; |
163 | dev->duplex = -1; | |
2f53e904 SS |
164 | dev->pause = 0; |
165 | dev->asym_pause = 0; | |
11b0bacd | 166 | dev->link = 1; |
e8a2b6a4 | 167 | dev->interface = PHY_INTERFACE_MODE_GMII; |
11b0bacd VB |
168 | |
169 | dev->autoneg = AUTONEG_ENABLE; | |
170 | ||
ac28b9f8 | 171 | dev->is_c45 = is_c45; |
11b0bacd VB |
172 | dev->addr = addr; |
173 | dev->phy_id = phy_id; | |
ac28b9f8 DD |
174 | if (c45_ids) |
175 | dev->c45_ids = *c45_ids; | |
11b0bacd | 176 | dev->bus = bus; |
4dea547f GL |
177 | dev->dev.parent = bus->parent; |
178 | dev->dev.bus = &mdio_bus_type; | |
179 | dev->irq = bus->irq != NULL ? bus->irq[addr] : PHY_POLL; | |
180 | dev_set_name(&dev->dev, PHY_ID_FMT, bus->id, addr); | |
11b0bacd VB |
181 | |
182 | dev->state = PHY_DOWN; | |
183 | ||
35b5f6b1 | 184 | mutex_init(&dev->lock); |
4f9c85a1 | 185 | INIT_DELAYED_WORK(&dev->state_queue, phy_state_machine); |
5ea94e76 | 186 | INIT_WORK(&dev->phy_queue, phy_change); |
11b0bacd | 187 | |
8626d3b4 | 188 | /* Request the appropriate module unconditionally; don't |
2f53e904 SS |
189 | * bother trying to do so only if it isn't already loaded, |
190 | * because that gets complicated. A hotplug event would have | |
191 | * done an unconditional modprobe anyway. | |
192 | * We don't do normal hotplug because it won't work for MDIO | |
193 | * -- because it relies on the device staying around for long | |
194 | * enough for the driver to get loaded. With MDIO, the NIC | |
195 | * driver will get bored and give up as soon as it finds that | |
196 | * there's no driver _already_ loaded. | |
197 | */ | |
8626d3b4 DW |
198 | request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT, MDIO_ID_ARGS(phy_id)); |
199 | ||
b2a43191 PM |
200 | device_initialize(&dev->dev); |
201 | ||
11b0bacd VB |
202 | return dev; |
203 | } | |
ac28b9f8 DD |
204 | EXPORT_SYMBOL(phy_device_create); |
205 | ||
206 | /** | |
207 | * get_phy_c45_ids - reads the specified addr for its 802.3-c45 IDs. | |
208 | * @bus: the target MII bus | |
209 | * @addr: PHY address on the MII bus | |
210 | * @phy_id: where to store the ID retrieved. | |
211 | * @c45_ids: where to store the c45 ID information. | |
212 | * | |
213 | * If the PHY devices-in-package appears to be valid, it and the | |
214 | * corresponding identifiers are stored in @c45_ids, zero is stored | |
215 | * in @phy_id. Otherwise 0xffffffff is stored in @phy_id. Returns | |
216 | * zero on success. | |
217 | * | |
218 | */ | |
219 | static int get_phy_c45_ids(struct mii_bus *bus, int addr, u32 *phy_id, | |
220 | struct phy_c45_device_ids *c45_ids) { | |
221 | int phy_reg; | |
222 | int i, reg_addr; | |
223 | const int num_ids = ARRAY_SIZE(c45_ids->device_ids); | |
224 | ||
225 | /* Find first non-zero Devices In package. Device | |
226 | * zero is reserved, so don't probe it. | |
227 | */ | |
228 | for (i = 1; | |
229 | i < num_ids && c45_ids->devices_in_package == 0; | |
230 | i++) { | |
231 | reg_addr = MII_ADDR_C45 | i << 16 | 6; | |
232 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
233 | if (phy_reg < 0) | |
234 | return -EIO; | |
235 | c45_ids->devices_in_package = (phy_reg & 0xffff) << 16; | |
236 | ||
237 | reg_addr = MII_ADDR_C45 | i << 16 | 5; | |
238 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
239 | if (phy_reg < 0) | |
240 | return -EIO; | |
241 | c45_ids->devices_in_package |= (phy_reg & 0xffff); | |
242 | ||
243 | /* If mostly Fs, there is no device there, | |
244 | * let's get out of here. | |
245 | */ | |
246 | if ((c45_ids->devices_in_package & 0x1fffffff) == 0x1fffffff) { | |
247 | *phy_id = 0xffffffff; | |
248 | return 0; | |
249 | } | |
250 | } | |
251 | ||
252 | /* Now probe Device Identifiers for each device present. */ | |
253 | for (i = 1; i < num_ids; i++) { | |
254 | if (!(c45_ids->devices_in_package & (1 << i))) | |
255 | continue; | |
256 | ||
257 | reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID1; | |
258 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
259 | if (phy_reg < 0) | |
260 | return -EIO; | |
261 | c45_ids->device_ids[i] = (phy_reg & 0xffff) << 16; | |
262 | ||
263 | reg_addr = MII_ADDR_C45 | i << 16 | MII_PHYSID2; | |
264 | phy_reg = mdiobus_read(bus, addr, reg_addr); | |
265 | if (phy_reg < 0) | |
266 | return -EIO; | |
267 | c45_ids->device_ids[i] |= (phy_reg & 0xffff); | |
268 | } | |
269 | *phy_id = 0; | |
270 | return 0; | |
271 | } | |
11b0bacd | 272 | |
b3df0da8 | 273 | /** |
cac1f3c8 | 274 | * get_phy_id - reads the specified addr for its ID. |
b3df0da8 RD |
275 | * @bus: the target MII bus |
276 | * @addr: PHY address on the MII bus | |
cac1f3c8 | 277 | * @phy_id: where to store the ID retrieved. |
ac28b9f8 DD |
278 | * @is_c45: If true the PHY uses the 802.3 clause 45 protocol |
279 | * @c45_ids: where to store the c45 ID information. | |
280 | * | |
281 | * Description: In the case of a 802.3-c22 PHY, reads the ID registers | |
282 | * of the PHY at @addr on the @bus, stores it in @phy_id and returns | |
283 | * zero on success. | |
284 | * | |
285 | * In the case of a 802.3-c45 PHY, get_phy_c45_ids() is invoked, and | |
286 | * its return value is in turn returned. | |
00db8189 | 287 | * |
00db8189 | 288 | */ |
ac28b9f8 DD |
289 | static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id, |
290 | bool is_c45, struct phy_c45_device_ids *c45_ids) | |
00db8189 AF |
291 | { |
292 | int phy_reg; | |
00db8189 | 293 | |
ac28b9f8 DD |
294 | if (is_c45) |
295 | return get_phy_c45_ids(bus, addr, phy_id, c45_ids); | |
296 | ||
2f53e904 | 297 | /* Grab the bits from PHYIR1, and put them in the upper half */ |
6fe32649 | 298 | phy_reg = mdiobus_read(bus, addr, MII_PHYSID1); |
00db8189 | 299 | if (phy_reg < 0) |
cac1f3c8 | 300 | return -EIO; |
00db8189 | 301 | |
cac1f3c8 | 302 | *phy_id = (phy_reg & 0xffff) << 16; |
00db8189 AF |
303 | |
304 | /* Grab the bits from PHYIR2, and put them in the lower half */ | |
6fe32649 | 305 | phy_reg = mdiobus_read(bus, addr, MII_PHYSID2); |
00db8189 | 306 | if (phy_reg < 0) |
cac1f3c8 PG |
307 | return -EIO; |
308 | ||
309 | *phy_id |= (phy_reg & 0xffff); | |
310 | ||
311 | return 0; | |
312 | } | |
313 | ||
314 | /** | |
2f53e904 SS |
315 | * get_phy_device - reads the specified PHY device and returns its @phy_device |
316 | * struct | |
cac1f3c8 PG |
317 | * @bus: the target MII bus |
318 | * @addr: PHY address on the MII bus | |
ac28b9f8 | 319 | * @is_c45: If true the PHY uses the 802.3 clause 45 protocol |
cac1f3c8 PG |
320 | * |
321 | * Description: Reads the ID registers of the PHY at @addr on the | |
322 | * @bus, then allocates and returns the phy_device to represent it. | |
323 | */ | |
ac28b9f8 | 324 | struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45) |
cac1f3c8 | 325 | { |
ac28b9f8 | 326 | struct phy_c45_device_ids c45_ids = {0}; |
160c85f0 | 327 | u32 phy_id = 0; |
cac1f3c8 | 328 | int r; |
00db8189 | 329 | |
ac28b9f8 | 330 | r = get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids); |
cac1f3c8 PG |
331 | if (r) |
332 | return ERR_PTR(r); | |
00db8189 | 333 | |
6436cbcd GC |
334 | /* If the phy_id is mostly Fs, there is no device there */ |
335 | if ((phy_id & 0x1fffffff) == 0x1fffffff) | |
336 | return NULL; | |
337 | ||
e62a768f | 338 | return phy_device_create(bus, addr, phy_id, is_c45, &c45_ids); |
00db8189 | 339 | } |
4dea547f GL |
340 | EXPORT_SYMBOL(get_phy_device); |
341 | ||
342 | /** | |
343 | * phy_device_register - Register the phy device on the MDIO bus | |
1d4ac5d5 | 344 | * @phydev: phy_device structure to be added to the MDIO bus |
4dea547f GL |
345 | */ |
346 | int phy_device_register(struct phy_device *phydev) | |
347 | { | |
348 | int err; | |
349 | ||
2f53e904 | 350 | /* Don't register a phy if one is already registered at this address */ |
4dea547f GL |
351 | if (phydev->bus->phy_map[phydev->addr]) |
352 | return -EINVAL; | |
353 | phydev->bus->phy_map[phydev->addr] = phydev; | |
354 | ||
355 | /* Run all of the fixups for this PHY */ | |
87aa9f9c FF |
356 | err = phy_init_hw(phydev); |
357 | if (err) { | |
358 | pr_err("PHY %d failed to initialize\n", phydev->addr); | |
359 | goto out; | |
360 | } | |
4dea547f | 361 | |
b2a43191 | 362 | err = device_add(&phydev->dev); |
4dea547f | 363 | if (err) { |
b2a43191 | 364 | pr_err("PHY %d failed to add\n", phydev->addr); |
4dea547f GL |
365 | goto out; |
366 | } | |
367 | ||
368 | return 0; | |
369 | ||
370 | out: | |
371 | phydev->bus->phy_map[phydev->addr] = NULL; | |
372 | return err; | |
373 | } | |
374 | EXPORT_SYMBOL(phy_device_register); | |
00db8189 | 375 | |
f8f76db1 JP |
376 | /** |
377 | * phy_find_first - finds the first PHY device on the bus | |
378 | * @bus: the target MII bus | |
379 | */ | |
380 | struct phy_device *phy_find_first(struct mii_bus *bus) | |
381 | { | |
382 | int addr; | |
383 | ||
384 | for (addr = 0; addr < PHY_MAX_ADDR; addr++) { | |
385 | if (bus->phy_map[addr]) | |
386 | return bus->phy_map[addr]; | |
387 | } | |
388 | return NULL; | |
389 | } | |
390 | EXPORT_SYMBOL(phy_find_first); | |
391 | ||
b3df0da8 RD |
392 | /** |
393 | * phy_prepare_link - prepares the PHY layer to monitor link status | |
394 | * @phydev: target phy_device struct | |
395 | * @handler: callback function for link status change notifications | |
00db8189 | 396 | * |
b3df0da8 | 397 | * Description: Tells the PHY infrastructure to handle the |
00db8189 AF |
398 | * gory details on monitoring link status (whether through |
399 | * polling or an interrupt), and to call back to the | |
400 | * connected device driver when the link status changes. | |
401 | * If you want to monitor your own link state, don't call | |
b3df0da8 RD |
402 | * this function. |
403 | */ | |
89ff05ec | 404 | static void phy_prepare_link(struct phy_device *phydev, |
2f53e904 | 405 | void (*handler)(struct net_device *)) |
00db8189 AF |
406 | { |
407 | phydev->adjust_link = handler; | |
408 | } | |
409 | ||
fa94f6d9 GL |
410 | /** |
411 | * phy_connect_direct - connect an ethernet device to a specific phy_device | |
412 | * @dev: the network device to connect | |
413 | * @phydev: the pointer to the phy device | |
414 | * @handler: callback function for state change notifications | |
fa94f6d9 GL |
415 | * @interface: PHY device's interface |
416 | */ | |
417 | int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, | |
f9a8f83b | 418 | void (*handler)(struct net_device *), |
fa94f6d9 GL |
419 | phy_interface_t interface) |
420 | { | |
421 | int rc; | |
422 | ||
f9a8f83b | 423 | rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface); |
fa94f6d9 GL |
424 | if (rc) |
425 | return rc; | |
426 | ||
427 | phy_prepare_link(phydev, handler); | |
29935aeb | 428 | phy_start_machine(phydev); |
fa94f6d9 GL |
429 | if (phydev->irq > 0) |
430 | phy_start_interrupts(phydev); | |
431 | ||
432 | return 0; | |
433 | } | |
434 | EXPORT_SYMBOL(phy_connect_direct); | |
435 | ||
b3df0da8 RD |
436 | /** |
437 | * phy_connect - connect an ethernet device to a PHY device | |
438 | * @dev: the network device to connect | |
5d12b132 | 439 | * @bus_id: the id string of the PHY device to connect |
b3df0da8 | 440 | * @handler: callback function for state change notifications |
b3df0da8 | 441 | * @interface: PHY device's interface |
e1393456 | 442 | * |
b3df0da8 | 443 | * Description: Convenience function for connecting ethernet |
e1393456 AF |
444 | * devices to PHY devices. The default behavior is for |
445 | * the PHY infrastructure to handle everything, and only notify | |
446 | * the connected driver when the link status changes. If you | |
447 | * don't want, or can't use the provided functionality, you may | |
448 | * choose to call only the subset of functions which provide | |
449 | * the desired functionality. | |
450 | */ | |
e109374f | 451 | struct phy_device *phy_connect(struct net_device *dev, const char *bus_id, |
2f53e904 SS |
452 | void (*handler)(struct net_device *), |
453 | phy_interface_t interface) | |
e1393456 AF |
454 | { |
455 | struct phy_device *phydev; | |
fa94f6d9 GL |
456 | struct device *d; |
457 | int rc; | |
e1393456 | 458 | |
fa94f6d9 | 459 | /* Search the list of PHY devices on the mdio bus for the |
2f53e904 SS |
460 | * PHY with the requested name |
461 | */ | |
fa94f6d9 GL |
462 | d = bus_find_device_by_name(&mdio_bus_type, NULL, bus_id); |
463 | if (!d) { | |
464 | pr_err("PHY %s not found\n", bus_id); | |
465 | return ERR_PTR(-ENODEV); | |
466 | } | |
467 | phydev = to_phy_device(d); | |
e1393456 | 468 | |
f9a8f83b | 469 | rc = phy_connect_direct(dev, phydev, handler, interface); |
fa94f6d9 GL |
470 | if (rc) |
471 | return ERR_PTR(rc); | |
e1393456 AF |
472 | |
473 | return phydev; | |
474 | } | |
475 | EXPORT_SYMBOL(phy_connect); | |
476 | ||
b3df0da8 | 477 | /** |
2f53e904 SS |
478 | * phy_disconnect - disable interrupts, stop state machine, and detach a PHY |
479 | * device | |
b3df0da8 RD |
480 | * @phydev: target phy_device struct |
481 | */ | |
e1393456 AF |
482 | void phy_disconnect(struct phy_device *phydev) |
483 | { | |
484 | if (phydev->irq > 0) | |
485 | phy_stop_interrupts(phydev); | |
486 | ||
487 | phy_stop_machine(phydev); | |
e109374f | 488 | |
e1393456 AF |
489 | phydev->adjust_link = NULL; |
490 | ||
491 | phy_detach(phydev); | |
492 | } | |
493 | EXPORT_SYMBOL(phy_disconnect); | |
494 | ||
87aa9f9c FF |
495 | /** |
496 | * phy_poll_reset - Safely wait until a PHY reset has properly completed | |
497 | * @phydev: The PHY device to poll | |
498 | * | |
499 | * Description: According to IEEE 802.3, Section 2, Subsection 22.2.4.1.1, as | |
500 | * published in 2008, a PHY reset may take up to 0.5 seconds. The MII BMCR | |
501 | * register must be polled until the BMCR_RESET bit clears. | |
502 | * | |
503 | * Furthermore, any attempts to write to PHY registers may have no effect | |
504 | * or even generate MDIO bus errors until this is complete. | |
505 | * | |
506 | * Some PHYs (such as the Marvell 88E1111) don't entirely conform to the | |
507 | * standard and do not fully reset after the BMCR_RESET bit is set, and may | |
508 | * even *REQUIRE* a soft-reset to properly restart autonegotiation. In an | |
509 | * effort to support such broken PHYs, this function is separate from the | |
510 | * standard phy_init_hw() which will zero all the other bits in the BMCR | |
511 | * and reapply all driver-specific and board-specific fixups. | |
512 | */ | |
513 | static int phy_poll_reset(struct phy_device *phydev) | |
514 | { | |
515 | /* Poll until the reset bit clears (50ms per retry == 0.6 sec) */ | |
516 | unsigned int retries = 12; | |
517 | int ret; | |
518 | ||
519 | do { | |
520 | msleep(50); | |
521 | ret = phy_read(phydev, MII_BMCR); | |
522 | if (ret < 0) | |
523 | return ret; | |
524 | } while (ret & BMCR_RESET && --retries); | |
525 | if (ret & BMCR_RESET) | |
526 | return -ETIMEDOUT; | |
527 | ||
2f53e904 | 528 | /* Some chips (smsc911x) may still need up to another 1ms after the |
87aa9f9c FF |
529 | * BMCR_RESET bit is cleared before they are usable. |
530 | */ | |
531 | msleep(1); | |
532 | return 0; | |
533 | } | |
534 | ||
2f5cb434 AV |
535 | int phy_init_hw(struct phy_device *phydev) |
536 | { | |
537 | int ret; | |
538 | ||
539 | if (!phydev->drv || !phydev->drv->config_init) | |
540 | return 0; | |
541 | ||
87aa9f9c FF |
542 | ret = phy_write(phydev, MII_BMCR, BMCR_RESET); |
543 | if (ret < 0) | |
544 | return ret; | |
545 | ||
546 | ret = phy_poll_reset(phydev); | |
547 | if (ret < 0) | |
548 | return ret; | |
549 | ||
2f5cb434 AV |
550 | ret = phy_scan_fixups(phydev); |
551 | if (ret < 0) | |
552 | return ret; | |
553 | ||
554 | return phydev->drv->config_init(phydev); | |
555 | } | |
87aa9f9c | 556 | EXPORT_SYMBOL(phy_init_hw); |
2f5cb434 | 557 | |
b3df0da8 | 558 | /** |
fa94f6d9 | 559 | * phy_attach_direct - attach a network device to a given PHY device pointer |
b3df0da8 | 560 | * @dev: network device to attach |
fa94f6d9 | 561 | * @phydev: Pointer to phy_device to attach |
b3df0da8 RD |
562 | * @flags: PHY device's dev_flags |
563 | * @interface: PHY device's interface | |
e1393456 | 564 | * |
b3df0da8 | 565 | * Description: Called by drivers to attach to a particular PHY |
e1393456 | 566 | * device. The phy_device is found, and properly hooked up |
257184d7 AF |
567 | * to the phy_driver. If no driver is attached, then a |
568 | * generic driver is used. The phy_device is given a ptr to | |
e1393456 | 569 | * the attaching device, and given a callback for link status |
b3df0da8 | 570 | * change. The phy_device is returned to the attaching driver. |
e1393456 | 571 | */ |
257184d7 AF |
572 | int phy_attach_direct(struct net_device *dev, struct phy_device *phydev, |
573 | u32 flags, phy_interface_t interface) | |
e1393456 | 574 | { |
fa94f6d9 | 575 | struct device *d = &phydev->dev; |
d005a09e | 576 | int err; |
e1393456 AF |
577 | |
578 | /* Assume that if there is no driver, that it doesn't | |
2f53e904 SS |
579 | * exist, and we should use the genphy driver. |
580 | */ | |
e1393456 | 581 | if (NULL == d->driver) { |
257184d7 AF |
582 | if (phydev->is_c45) |
583 | d->driver = &genphy_driver[GENPHY_DRV_10G].driver; | |
584 | else | |
585 | d->driver = &genphy_driver[GENPHY_DRV_1G].driver; | |
e1393456 AF |
586 | |
587 | err = d->driver->probe(d); | |
b7a00ecd JG |
588 | if (err >= 0) |
589 | err = device_bind_driver(d); | |
e1393456 | 590 | |
b7a00ecd | 591 | if (err) |
fa94f6d9 | 592 | return err; |
e1393456 AF |
593 | } |
594 | ||
595 | if (phydev->attached_dev) { | |
fa94f6d9 GL |
596 | dev_err(&dev->dev, "PHY already attached\n"); |
597 | return -EBUSY; | |
e1393456 AF |
598 | } |
599 | ||
600 | phydev->attached_dev = dev; | |
c1f19b51 | 601 | dev->phydev = phydev; |
e1393456 AF |
602 | |
603 | phydev->dev_flags = flags; | |
604 | ||
e8a2b6a4 AF |
605 | phydev->interface = interface; |
606 | ||
ef24b16b AV |
607 | phydev->state = PHY_READY; |
608 | ||
e8a2b6a4 AF |
609 | /* Do initial configuration here, now that |
610 | * we have certain key parameters | |
2f53e904 SS |
611 | * (dev_flags and interface) |
612 | */ | |
d005a09e MKB |
613 | err = phy_init_hw(phydev); |
614 | if (err) | |
615 | phy_detach(phydev); | |
616 | ||
1211ce53 SH |
617 | phy_resume(phydev); |
618 | ||
d005a09e | 619 | return err; |
fa94f6d9 | 620 | } |
257184d7 | 621 | EXPORT_SYMBOL(phy_attach_direct); |
fa94f6d9 GL |
622 | |
623 | /** | |
624 | * phy_attach - attach a network device to a particular PHY device | |
625 | * @dev: network device to attach | |
626 | * @bus_id: Bus ID of PHY device to attach | |
fa94f6d9 GL |
627 | * @interface: PHY device's interface |
628 | * | |
629 | * Description: Same as phy_attach_direct() except that a PHY bus_id | |
630 | * string is passed instead of a pointer to a struct phy_device. | |
631 | */ | |
2f53e904 SS |
632 | struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, |
633 | phy_interface_t interface) | |
fa94f6d9 GL |
634 | { |
635 | struct bus_type *bus = &mdio_bus_type; | |
636 | struct phy_device *phydev; | |
637 | struct device *d; | |
638 | int rc; | |
639 | ||
640 | /* Search the list of PHY devices on the mdio bus for the | |
2f53e904 SS |
641 | * PHY with the requested name |
642 | */ | |
fa94f6d9 GL |
643 | d = bus_find_device_by_name(bus, NULL, bus_id); |
644 | if (!d) { | |
645 | pr_err("PHY %s not found\n", bus_id); | |
646 | return ERR_PTR(-ENODEV); | |
e8a2b6a4 | 647 | } |
fa94f6d9 GL |
648 | phydev = to_phy_device(d); |
649 | ||
f9a8f83b | 650 | rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface); |
fa94f6d9 GL |
651 | if (rc) |
652 | return ERR_PTR(rc); | |
e8a2b6a4 | 653 | |
e1393456 AF |
654 | return phydev; |
655 | } | |
656 | EXPORT_SYMBOL(phy_attach); | |
657 | ||
b3df0da8 RD |
658 | /** |
659 | * phy_detach - detach a PHY device from its network device | |
660 | * @phydev: target phy_device struct | |
661 | */ | |
e1393456 AF |
662 | void phy_detach(struct phy_device *phydev) |
663 | { | |
ab2145ed | 664 | int i; |
c1f19b51 | 665 | phydev->attached_dev->phydev = NULL; |
e1393456 | 666 | phydev->attached_dev = NULL; |
1211ce53 | 667 | phy_suspend(phydev); |
e1393456 AF |
668 | |
669 | /* If the device had no specific driver before (i.e. - it | |
670 | * was using the generic driver), we unbind the device | |
671 | * from the generic driver so that there's a chance a | |
2f53e904 SS |
672 | * real driver could be loaded |
673 | */ | |
ab2145ed SX |
674 | for (i = 0; i < ARRAY_SIZE(genphy_driver); i++) { |
675 | if (phydev->dev.driver == &genphy_driver[i].driver) { | |
676 | device_release_driver(&phydev->dev); | |
677 | break; | |
678 | } | |
679 | } | |
e1393456 AF |
680 | } |
681 | EXPORT_SYMBOL(phy_detach); | |
682 | ||
481b5d93 SH |
683 | int phy_suspend(struct phy_device *phydev) |
684 | { | |
685 | struct phy_driver *phydrv = to_phy_driver(phydev->dev.driver); | |
32fc3fd4 | 686 | struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; |
481b5d93 SH |
687 | |
688 | /* If the device has WOL enabled, we cannot suspend the PHY */ | |
481b5d93 SH |
689 | phy_ethtool_get_wol(phydev, &wol); |
690 | if (wol.wolopts) | |
691 | return -EBUSY; | |
692 | ||
693 | if (phydrv->suspend) | |
694 | return phydrv->suspend(phydev); | |
695 | return 0; | |
696 | } | |
697 | ||
698 | int phy_resume(struct phy_device *phydev) | |
699 | { | |
700 | struct phy_driver *phydrv = to_phy_driver(phydev->dev.driver); | |
701 | ||
702 | if (phydrv->resume) | |
703 | return phydrv->resume(phydev); | |
704 | return 0; | |
705 | } | |
e1393456 | 706 | |
00db8189 AF |
707 | /* Generic PHY support and helper functions */ |
708 | ||
b3df0da8 | 709 | /** |
25985edc | 710 | * genphy_config_advert - sanitize and advertise auto-negotiation parameters |
b3df0da8 | 711 | * @phydev: target phy_device struct |
00db8189 | 712 | * |
b3df0da8 | 713 | * Description: Writes MII_ADVERTISE with the appropriate values, |
00db8189 | 714 | * after sanitizing the values to make sure we only advertise |
51e2a384 TP |
715 | * what is supported. Returns < 0 on error, 0 if the PHY's advertisement |
716 | * hasn't changed, and > 0 if it has changed. | |
00db8189 | 717 | */ |
89ff05ec | 718 | static int genphy_config_advert(struct phy_device *phydev) |
00db8189 AF |
719 | { |
720 | u32 advertise; | |
5273e3a5 | 721 | int oldadv, adv, bmsr; |
51e2a384 | 722 | int err, changed = 0; |
00db8189 | 723 | |
2f53e904 | 724 | /* Only allow advertising what this PHY supports */ |
00db8189 AF |
725 | phydev->advertising &= phydev->supported; |
726 | advertise = phydev->advertising; | |
727 | ||
728 | /* Setup standard advertisement */ | |
2f53e904 | 729 | adv = phy_read(phydev, MII_ADVERTISE); |
00db8189 AF |
730 | if (adv < 0) |
731 | return adv; | |
732 | ||
2f53e904 | 733 | oldadv = adv; |
28011cf1 | 734 | adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | |
00db8189 | 735 | ADVERTISE_PAUSE_ASYM); |
37f07023 | 736 | adv |= ethtool_adv_to_mii_adv_t(advertise); |
00db8189 | 737 | |
51e2a384 TP |
738 | if (adv != oldadv) { |
739 | err = phy_write(phydev, MII_ADVERTISE, adv); | |
00db8189 | 740 | |
51e2a384 TP |
741 | if (err < 0) |
742 | return err; | |
743 | changed = 1; | |
744 | } | |
00db8189 | 745 | |
5273e3a5 FF |
746 | bmsr = phy_read(phydev, MII_BMSR); |
747 | if (bmsr < 0) | |
748 | return bmsr; | |
749 | ||
750 | /* Per 802.3-2008, Section 22.2.4.2.16 Extended status all | |
751 | * 1000Mbits/sec capable PHYs shall have the BMSR_ESTATEN bit set to a | |
752 | * logical 1. | |
753 | */ | |
754 | if (!(bmsr & BMSR_ESTATEN)) | |
755 | return changed; | |
756 | ||
00db8189 | 757 | /* Configure gigabit if it's supported */ |
5273e3a5 FF |
758 | adv = phy_read(phydev, MII_CTRL1000); |
759 | if (adv < 0) | |
760 | return adv; | |
761 | ||
762 | oldadv = adv; | |
763 | adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); | |
764 | ||
00db8189 | 765 | if (phydev->supported & (SUPPORTED_1000baseT_Half | |
2f53e904 | 766 | SUPPORTED_1000baseT_Full)) { |
37f07023 | 767 | adv |= ethtool_adv_to_mii_ctrl1000_t(advertise); |
5273e3a5 | 768 | if (adv != oldadv) |
51e2a384 | 769 | changed = 1; |
00db8189 AF |
770 | } |
771 | ||
5273e3a5 FF |
772 | err = phy_write(phydev, MII_CTRL1000, adv); |
773 | if (err < 0) | |
774 | return err; | |
775 | ||
51e2a384 | 776 | return changed; |
00db8189 | 777 | } |
00db8189 | 778 | |
b3df0da8 RD |
779 | /** |
780 | * genphy_setup_forced - configures/forces speed/duplex from @phydev | |
781 | * @phydev: target phy_device struct | |
00db8189 | 782 | * |
b3df0da8 | 783 | * Description: Configures MII_BMCR to force speed/duplex |
00db8189 | 784 | * to the values in phydev. Assumes that the values are valid. |
b3df0da8 RD |
785 | * Please see phy_sanitize_settings(). |
786 | */ | |
3fb69bca | 787 | int genphy_setup_forced(struct phy_device *phydev) |
00db8189 | 788 | { |
bc1e0a09 | 789 | int ctl = 0; |
00db8189 | 790 | |
2f53e904 SS |
791 | phydev->pause = 0; |
792 | phydev->asym_pause = 0; | |
00db8189 AF |
793 | |
794 | if (SPEED_1000 == phydev->speed) | |
795 | ctl |= BMCR_SPEED1000; | |
796 | else if (SPEED_100 == phydev->speed) | |
797 | ctl |= BMCR_SPEED100; | |
798 | ||
799 | if (DUPLEX_FULL == phydev->duplex) | |
800 | ctl |= BMCR_FULLDPLX; | |
e109374f | 801 | |
e62a768f | 802 | return phy_write(phydev, MII_BMCR, ctl); |
00db8189 | 803 | } |
3fb69bca | 804 | EXPORT_SYMBOL(genphy_setup_forced); |
00db8189 | 805 | |
b3df0da8 RD |
806 | /** |
807 | * genphy_restart_aneg - Enable and Restart Autonegotiation | |
808 | * @phydev: target phy_device struct | |
809 | */ | |
00db8189 AF |
810 | int genphy_restart_aneg(struct phy_device *phydev) |
811 | { | |
553fe92b | 812 | int ctl = phy_read(phydev, MII_BMCR); |
00db8189 AF |
813 | |
814 | if (ctl < 0) | |
815 | return ctl; | |
816 | ||
2f53e904 | 817 | ctl |= BMCR_ANENABLE | BMCR_ANRESTART; |
00db8189 AF |
818 | |
819 | /* Don't isolate the PHY if we're negotiating */ | |
2f53e904 | 820 | ctl &= ~BMCR_ISOLATE; |
00db8189 | 821 | |
553fe92b | 822 | return phy_write(phydev, MII_BMCR, ctl); |
00db8189 | 823 | } |
892871dc | 824 | EXPORT_SYMBOL(genphy_restart_aneg); |
00db8189 | 825 | |
b3df0da8 RD |
826 | /** |
827 | * genphy_config_aneg - restart auto-negotiation or write BMCR | |
828 | * @phydev: target phy_device struct | |
00db8189 | 829 | * |
b3df0da8 | 830 | * Description: If auto-negotiation is enabled, we configure the |
00db8189 | 831 | * advertising, and then restart auto-negotiation. If it is not |
b3df0da8 | 832 | * enabled, then we write the BMCR. |
00db8189 AF |
833 | */ |
834 | int genphy_config_aneg(struct phy_device *phydev) | |
835 | { | |
de339c2a | 836 | int result; |
00db8189 | 837 | |
de339c2a TP |
838 | if (AUTONEG_ENABLE != phydev->autoneg) |
839 | return genphy_setup_forced(phydev); | |
00db8189 | 840 | |
de339c2a | 841 | result = genphy_config_advert(phydev); |
de339c2a TP |
842 | if (result < 0) /* error */ |
843 | return result; | |
de339c2a | 844 | if (result == 0) { |
25985edc | 845 | /* Advertisement hasn't changed, but maybe aneg was never on to |
2f53e904 SS |
846 | * begin with? Or maybe phy was isolated? |
847 | */ | |
de339c2a TP |
848 | int ctl = phy_read(phydev, MII_BMCR); |
849 | ||
850 | if (ctl < 0) | |
851 | return ctl; | |
852 | ||
853 | if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE)) | |
854 | result = 1; /* do restart aneg */ | |
855 | } | |
856 | ||
857 | /* Only restart aneg if we are advertising something different | |
2f53e904 SS |
858 | * than we were before. |
859 | */ | |
de339c2a TP |
860 | if (result > 0) |
861 | result = genphy_restart_aneg(phydev); | |
00db8189 | 862 | |
51e2a384 | 863 | return result; |
00db8189 AF |
864 | } |
865 | EXPORT_SYMBOL(genphy_config_aneg); | |
866 | ||
395056ed | 867 | static int gen10g_config_aneg(struct phy_device *phydev) |
124059fd AF |
868 | { |
869 | return 0; | |
870 | } | |
124059fd | 871 | |
b3df0da8 RD |
872 | /** |
873 | * genphy_update_link - update link status in @phydev | |
874 | * @phydev: target phy_device struct | |
00db8189 | 875 | * |
b3df0da8 | 876 | * Description: Update the value in phydev->link to reflect the |
00db8189 | 877 | * current link value. In order to do this, we need to read |
b3df0da8 | 878 | * the status register twice, keeping the second value. |
00db8189 AF |
879 | */ |
880 | int genphy_update_link(struct phy_device *phydev) | |
881 | { | |
882 | int status; | |
883 | ||
884 | /* Do a fake read */ | |
885 | status = phy_read(phydev, MII_BMSR); | |
00db8189 AF |
886 | if (status < 0) |
887 | return status; | |
888 | ||
889 | /* Read link and autonegotiation status */ | |
890 | status = phy_read(phydev, MII_BMSR); | |
00db8189 AF |
891 | if (status < 0) |
892 | return status; | |
893 | ||
894 | if ((status & BMSR_LSTATUS) == 0) | |
895 | phydev->link = 0; | |
896 | else | |
897 | phydev->link = 1; | |
898 | ||
899 | return 0; | |
900 | } | |
6b655529 | 901 | EXPORT_SYMBOL(genphy_update_link); |
00db8189 | 902 | |
b3df0da8 RD |
903 | /** |
904 | * genphy_read_status - check the link status and update current link state | |
905 | * @phydev: target phy_device struct | |
00db8189 | 906 | * |
b3df0da8 | 907 | * Description: Check the link, then figure out the current state |
00db8189 AF |
908 | * by comparing what we advertise with what the link partner |
909 | * advertises. Start by checking the gigabit possibilities, | |
910 | * then move on to 10/100. | |
911 | */ | |
912 | int genphy_read_status(struct phy_device *phydev) | |
913 | { | |
914 | int adv; | |
915 | int err; | |
916 | int lpa; | |
917 | int lpagb = 0; | |
a4572e0c CB |
918 | int common_adv; |
919 | int common_adv_gb = 0; | |
00db8189 | 920 | |
2f53e904 | 921 | /* Update the link, but return if there was an error */ |
00db8189 AF |
922 | err = genphy_update_link(phydev); |
923 | if (err) | |
924 | return err; | |
925 | ||
114002bc FF |
926 | phydev->lp_advertising = 0; |
927 | ||
00db8189 AF |
928 | if (AUTONEG_ENABLE == phydev->autoneg) { |
929 | if (phydev->supported & (SUPPORTED_1000baseT_Half | |
930 | | SUPPORTED_1000baseT_Full)) { | |
931 | lpagb = phy_read(phydev, MII_STAT1000); | |
00db8189 AF |
932 | if (lpagb < 0) |
933 | return lpagb; | |
934 | ||
935 | adv = phy_read(phydev, MII_CTRL1000); | |
00db8189 AF |
936 | if (adv < 0) |
937 | return adv; | |
938 | ||
114002bc FF |
939 | phydev->lp_advertising = |
940 | mii_stat1000_to_ethtool_lpa_t(lpagb); | |
a4572e0c | 941 | common_adv_gb = lpagb & adv << 2; |
00db8189 AF |
942 | } |
943 | ||
944 | lpa = phy_read(phydev, MII_LPA); | |
00db8189 AF |
945 | if (lpa < 0) |
946 | return lpa; | |
947 | ||
114002bc FF |
948 | phydev->lp_advertising |= mii_lpa_to_ethtool_lpa_t(lpa); |
949 | ||
00db8189 | 950 | adv = phy_read(phydev, MII_ADVERTISE); |
00db8189 AF |
951 | if (adv < 0) |
952 | return adv; | |
953 | ||
a4572e0c | 954 | common_adv = lpa & adv; |
00db8189 AF |
955 | |
956 | phydev->speed = SPEED_10; | |
957 | phydev->duplex = DUPLEX_HALF; | |
2f53e904 SS |
958 | phydev->pause = 0; |
959 | phydev->asym_pause = 0; | |
00db8189 | 960 | |
a4572e0c | 961 | if (common_adv_gb & (LPA_1000FULL | LPA_1000HALF)) { |
00db8189 AF |
962 | phydev->speed = SPEED_1000; |
963 | ||
a4572e0c | 964 | if (common_adv_gb & LPA_1000FULL) |
00db8189 | 965 | phydev->duplex = DUPLEX_FULL; |
a4572e0c | 966 | } else if (common_adv & (LPA_100FULL | LPA_100HALF)) { |
00db8189 | 967 | phydev->speed = SPEED_100; |
e109374f | 968 | |
a4572e0c | 969 | if (common_adv & LPA_100FULL) |
00db8189 AF |
970 | phydev->duplex = DUPLEX_FULL; |
971 | } else | |
a4572e0c | 972 | if (common_adv & LPA_10FULL) |
00db8189 AF |
973 | phydev->duplex = DUPLEX_FULL; |
974 | ||
e109374f | 975 | if (phydev->duplex == DUPLEX_FULL) { |
00db8189 AF |
976 | phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0; |
977 | phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0; | |
978 | } | |
979 | } else { | |
980 | int bmcr = phy_read(phydev, MII_BMCR); | |
2f53e904 | 981 | |
00db8189 AF |
982 | if (bmcr < 0) |
983 | return bmcr; | |
984 | ||
985 | if (bmcr & BMCR_FULLDPLX) | |
986 | phydev->duplex = DUPLEX_FULL; | |
987 | else | |
988 | phydev->duplex = DUPLEX_HALF; | |
989 | ||
990 | if (bmcr & BMCR_SPEED1000) | |
991 | phydev->speed = SPEED_1000; | |
992 | else if (bmcr & BMCR_SPEED100) | |
993 | phydev->speed = SPEED_100; | |
994 | else | |
995 | phydev->speed = SPEED_10; | |
996 | ||
2f53e904 SS |
997 | phydev->pause = 0; |
998 | phydev->asym_pause = 0; | |
00db8189 AF |
999 | } |
1000 | ||
1001 | return 0; | |
1002 | } | |
1003 | EXPORT_SYMBOL(genphy_read_status); | |
1004 | ||
395056ed | 1005 | static int gen10g_read_status(struct phy_device *phydev) |
124059fd AF |
1006 | { |
1007 | int devad, reg; | |
1008 | u32 mmd_mask = phydev->c45_ids.devices_in_package; | |
1009 | ||
1010 | phydev->link = 1; | |
1011 | ||
1012 | /* For now just lie and say it's 10G all the time */ | |
1013 | phydev->speed = SPEED_10000; | |
1014 | phydev->duplex = DUPLEX_FULL; | |
1015 | ||
1016 | for (devad = 0; mmd_mask; devad++, mmd_mask = mmd_mask >> 1) { | |
1017 | if (!(mmd_mask & 1)) | |
1018 | continue; | |
1019 | ||
1020 | /* Read twice because link state is latched and a | |
1021 | * read moves the current state into the register | |
1022 | */ | |
1023 | phy_read_mmd(phydev, devad, MDIO_STAT1); | |
1024 | reg = phy_read_mmd(phydev, devad, MDIO_STAT1); | |
1025 | if (reg < 0 || !(reg & MDIO_STAT1_LSTATUS)) | |
1026 | phydev->link = 0; | |
1027 | } | |
1028 | ||
1029 | return 0; | |
1030 | } | |
124059fd | 1031 | |
00db8189 AF |
1032 | static int genphy_config_init(struct phy_device *phydev) |
1033 | { | |
84c22d79 | 1034 | int val; |
00db8189 AF |
1035 | u32 features; |
1036 | ||
1037 | /* For now, I'll claim that the generic driver supports | |
2f53e904 SS |
1038 | * all possible port types |
1039 | */ | |
00db8189 AF |
1040 | features = (SUPPORTED_TP | SUPPORTED_MII |
1041 | | SUPPORTED_AUI | SUPPORTED_FIBRE | | |
1042 | SUPPORTED_BNC); | |
1043 | ||
1044 | /* Do we support autonegotiation? */ | |
1045 | val = phy_read(phydev, MII_BMSR); | |
00db8189 AF |
1046 | if (val < 0) |
1047 | return val; | |
1048 | ||
1049 | if (val & BMSR_ANEGCAPABLE) | |
1050 | features |= SUPPORTED_Autoneg; | |
1051 | ||
1052 | if (val & BMSR_100FULL) | |
1053 | features |= SUPPORTED_100baseT_Full; | |
1054 | if (val & BMSR_100HALF) | |
1055 | features |= SUPPORTED_100baseT_Half; | |
1056 | if (val & BMSR_10FULL) | |
1057 | features |= SUPPORTED_10baseT_Full; | |
1058 | if (val & BMSR_10HALF) | |
1059 | features |= SUPPORTED_10baseT_Half; | |
1060 | ||
1061 | if (val & BMSR_ESTATEN) { | |
1062 | val = phy_read(phydev, MII_ESTATUS); | |
00db8189 AF |
1063 | if (val < 0) |
1064 | return val; | |
1065 | ||
1066 | if (val & ESTATUS_1000_TFULL) | |
1067 | features |= SUPPORTED_1000baseT_Full; | |
1068 | if (val & ESTATUS_1000_THALF) | |
1069 | features |= SUPPORTED_1000baseT_Half; | |
1070 | } | |
1071 | ||
1072 | phydev->supported = features; | |
1073 | phydev->advertising = features; | |
1074 | ||
1075 | return 0; | |
1076 | } | |
124059fd AF |
1077 | |
1078 | static int gen10g_config_init(struct phy_device *phydev) | |
1079 | { | |
1080 | /* Temporarily just say we support everything */ | |
1081 | phydev->supported = SUPPORTED_10000baseT_Full; | |
1082 | phydev->advertising = SUPPORTED_10000baseT_Full; | |
1083 | ||
1084 | return 0; | |
1085 | } | |
1086 | ||
0f0ca340 GC |
1087 | int genphy_suspend(struct phy_device *phydev) |
1088 | { | |
1089 | int value; | |
1090 | ||
1091 | mutex_lock(&phydev->lock); | |
1092 | ||
1093 | value = phy_read(phydev, MII_BMCR); | |
2f53e904 | 1094 | phy_write(phydev, MII_BMCR, value | BMCR_PDOWN); |
0f0ca340 GC |
1095 | |
1096 | mutex_unlock(&phydev->lock); | |
1097 | ||
1098 | return 0; | |
1099 | } | |
1100 | EXPORT_SYMBOL(genphy_suspend); | |
00db8189 | 1101 | |
395056ed | 1102 | static int gen10g_suspend(struct phy_device *phydev) |
124059fd AF |
1103 | { |
1104 | return 0; | |
1105 | } | |
124059fd | 1106 | |
0f0ca340 GC |
1107 | int genphy_resume(struct phy_device *phydev) |
1108 | { | |
1109 | int value; | |
1110 | ||
1111 | mutex_lock(&phydev->lock); | |
1112 | ||
1113 | value = phy_read(phydev, MII_BMCR); | |
2f53e904 | 1114 | phy_write(phydev, MII_BMCR, value & ~BMCR_PDOWN); |
0f0ca340 GC |
1115 | |
1116 | mutex_unlock(&phydev->lock); | |
1117 | ||
1118 | return 0; | |
1119 | } | |
1120 | EXPORT_SYMBOL(genphy_resume); | |
00db8189 | 1121 | |
395056ed | 1122 | static int gen10g_resume(struct phy_device *phydev) |
124059fd AF |
1123 | { |
1124 | return 0; | |
1125 | } | |
124059fd | 1126 | |
b3df0da8 RD |
1127 | /** |
1128 | * phy_probe - probe and init a PHY device | |
1129 | * @dev: device to probe and init | |
00db8189 | 1130 | * |
b3df0da8 | 1131 | * Description: Take care of setting up the phy_device structure, |
00db8189 AF |
1132 | * set the state to READY (the driver's init function should |
1133 | * set it to STARTING if needed). | |
1134 | */ | |
1135 | static int phy_probe(struct device *dev) | |
1136 | { | |
553fe92b SS |
1137 | struct phy_device *phydev = to_phy_device(dev); |
1138 | struct device_driver *drv = phydev->dev.driver; | |
1139 | struct phy_driver *phydrv = to_phy_driver(drv); | |
00db8189 AF |
1140 | int err = 0; |
1141 | ||
00db8189 AF |
1142 | phydev->drv = phydrv; |
1143 | ||
2c7b4921 FF |
1144 | /* Disable the interrupt if the PHY doesn't support it |
1145 | * but the interrupt is still a valid one | |
1146 | */ | |
1147 | if (!(phydrv->flags & PHY_HAS_INTERRUPT) && | |
2f53e904 | 1148 | phy_interrupt_is_valid(phydev)) |
00db8189 AF |
1149 | phydev->irq = PHY_POLL; |
1150 | ||
4284b6a5 FF |
1151 | if (phydrv->flags & PHY_IS_INTERNAL) |
1152 | phydev->is_internal = true; | |
1153 | ||
35b5f6b1 | 1154 | mutex_lock(&phydev->lock); |
00db8189 AF |
1155 | |
1156 | /* Start out supporting everything. Eventually, | |
1157 | * a controller will attach, and may modify one | |
2f53e904 SS |
1158 | * or both of these values |
1159 | */ | |
00db8189 AF |
1160 | phydev->supported = phydrv->features; |
1161 | phydev->advertising = phydrv->features; | |
1162 | ||
1163 | /* Set the state to READY by default */ | |
1164 | phydev->state = PHY_READY; | |
1165 | ||
1166 | if (phydev->drv->probe) | |
1167 | err = phydev->drv->probe(phydev); | |
1168 | ||
35b5f6b1 | 1169 | mutex_unlock(&phydev->lock); |
00db8189 | 1170 | |
00db8189 AF |
1171 | return err; |
1172 | } | |
1173 | ||
1174 | static int phy_remove(struct device *dev) | |
1175 | { | |
553fe92b | 1176 | struct phy_device *phydev = to_phy_device(dev); |
00db8189 | 1177 | |
35b5f6b1 | 1178 | mutex_lock(&phydev->lock); |
00db8189 | 1179 | phydev->state = PHY_DOWN; |
35b5f6b1 | 1180 | mutex_unlock(&phydev->lock); |
00db8189 AF |
1181 | |
1182 | if (phydev->drv->remove) | |
1183 | phydev->drv->remove(phydev); | |
00db8189 AF |
1184 | phydev->drv = NULL; |
1185 | ||
1186 | return 0; | |
1187 | } | |
1188 | ||
b3df0da8 RD |
1189 | /** |
1190 | * phy_driver_register - register a phy_driver with the PHY layer | |
1191 | * @new_driver: new phy_driver to register | |
1192 | */ | |
00db8189 AF |
1193 | int phy_driver_register(struct phy_driver *new_driver) |
1194 | { | |
1195 | int retval; | |
1196 | ||
00db8189 AF |
1197 | new_driver->driver.name = new_driver->name; |
1198 | new_driver->driver.bus = &mdio_bus_type; | |
1199 | new_driver->driver.probe = phy_probe; | |
1200 | new_driver->driver.remove = phy_remove; | |
1201 | ||
1202 | retval = driver_register(&new_driver->driver); | |
00db8189 | 1203 | if (retval) { |
8d242488 JP |
1204 | pr_err("%s: Error %d in registering driver\n", |
1205 | new_driver->name, retval); | |
00db8189 AF |
1206 | |
1207 | return retval; | |
1208 | } | |
1209 | ||
f2511f13 | 1210 | pr_debug("%s: Registered new driver\n", new_driver->name); |
00db8189 AF |
1211 | |
1212 | return 0; | |
1213 | } | |
1214 | EXPORT_SYMBOL(phy_driver_register); | |
1215 | ||
d5bf9071 CH |
1216 | int phy_drivers_register(struct phy_driver *new_driver, int n) |
1217 | { | |
1218 | int i, ret = 0; | |
1219 | ||
1220 | for (i = 0; i < n; i++) { | |
1221 | ret = phy_driver_register(new_driver + i); | |
1222 | if (ret) { | |
1223 | while (i-- > 0) | |
1224 | phy_driver_unregister(new_driver + i); | |
1225 | break; | |
1226 | } | |
1227 | } | |
1228 | return ret; | |
1229 | } | |
1230 | EXPORT_SYMBOL(phy_drivers_register); | |
1231 | ||
00db8189 AF |
1232 | void phy_driver_unregister(struct phy_driver *drv) |
1233 | { | |
1234 | driver_unregister(&drv->driver); | |
1235 | } | |
1236 | EXPORT_SYMBOL(phy_driver_unregister); | |
1237 | ||
d5bf9071 CH |
1238 | void phy_drivers_unregister(struct phy_driver *drv, int n) |
1239 | { | |
1240 | int i; | |
2f53e904 SS |
1241 | |
1242 | for (i = 0; i < n; i++) | |
d5bf9071 | 1243 | phy_driver_unregister(drv + i); |
d5bf9071 CH |
1244 | } |
1245 | EXPORT_SYMBOL(phy_drivers_unregister); | |
1246 | ||
ab2145ed SX |
1247 | static struct phy_driver genphy_driver[] = { |
1248 | { | |
e1393456 AF |
1249 | .phy_id = 0xffffffff, |
1250 | .phy_id_mask = 0xffffffff, | |
1251 | .name = "Generic PHY", | |
1252 | .config_init = genphy_config_init, | |
1253 | .features = 0, | |
1254 | .config_aneg = genphy_config_aneg, | |
1255 | .read_status = genphy_read_status, | |
0f0ca340 GC |
1256 | .suspend = genphy_suspend, |
1257 | .resume = genphy_resume, | |
e109374f | 1258 | .driver = { .owner = THIS_MODULE, }, |
124059fd AF |
1259 | }, { |
1260 | .phy_id = 0xffffffff, | |
1261 | .phy_id_mask = 0xffffffff, | |
1262 | .name = "Generic 10G PHY", | |
1263 | .config_init = gen10g_config_init, | |
1264 | .features = 0, | |
1265 | .config_aneg = gen10g_config_aneg, | |
1266 | .read_status = gen10g_read_status, | |
1267 | .suspend = gen10g_suspend, | |
1268 | .resume = gen10g_resume, | |
1269 | .driver = {.owner = THIS_MODULE, }, | |
ab2145ed | 1270 | } }; |
00db8189 | 1271 | |
67c4f3fa | 1272 | static int __init phy_init(void) |
00db8189 | 1273 | { |
67c4f3fa | 1274 | int rc; |
67c4f3fa JG |
1275 | |
1276 | rc = mdio_bus_init(); | |
1277 | if (rc) | |
e1393456 | 1278 | return rc; |
00db8189 | 1279 | |
ab2145ed SX |
1280 | rc = phy_drivers_register(genphy_driver, |
1281 | ARRAY_SIZE(genphy_driver)); | |
e1393456 AF |
1282 | if (rc) |
1283 | mdio_bus_exit(); | |
67c4f3fa | 1284 | |
67c4f3fa | 1285 | return rc; |
00db8189 AF |
1286 | } |
1287 | ||
67c4f3fa | 1288 | static void __exit phy_exit(void) |
00db8189 | 1289 | { |
ab2145ed SX |
1290 | phy_drivers_unregister(genphy_driver, |
1291 | ARRAY_SIZE(genphy_driver)); | |
e1393456 | 1292 | mdio_bus_exit(); |
00db8189 AF |
1293 | } |
1294 | ||
e1393456 | 1295 | subsys_initcall(phy_init); |
67c4f3fa | 1296 | module_exit(phy_exit); |