Commit | Line | Data |
---|---|---|
8369ae33 RM |
1 | /* |
2 | * Broadcom specific AMBA | |
3 | * Bus subsystem | |
4 | * | |
5 | * Licensed under the GNU/GPL. See COPYING for details. | |
6 | */ | |
7 | ||
8 | #include "bcma_private.h" | |
200351c7 | 9 | #include <linux/module.h> |
d57ef3a6 | 10 | #include <linux/platform_device.h> |
8369ae33 | 11 | #include <linux/bcma/bcma.h> |
eef72699 | 12 | #include <linux/slab.h> |
8369ae33 RM |
13 | |
14 | MODULE_DESCRIPTION("Broadcom's specific AMBA driver"); | |
15 | MODULE_LICENSE("GPL"); | |
16 | ||
8f9ada4f HM |
17 | /* contains the number the next bus should get. */ |
18 | static unsigned int bcma_bus_next_num = 0; | |
19 | ||
20 | /* bcma_buses_mutex locks the bcma_bus_next_num */ | |
21 | static DEFINE_MUTEX(bcma_buses_mutex); | |
22 | ||
8369ae33 RM |
23 | static int bcma_bus_match(struct device *dev, struct device_driver *drv); |
24 | static int bcma_device_probe(struct device *dev); | |
25 | static int bcma_device_remove(struct device *dev); | |
886b66ef | 26 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env); |
8369ae33 RM |
27 | |
28 | static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf) | |
29 | { | |
30 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
31 | return sprintf(buf, "0x%03X\n", core->id.manuf); | |
32 | } | |
fdcf4f81 GKH |
33 | static DEVICE_ATTR_RO(manuf); |
34 | ||
8369ae33 RM |
35 | static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf) |
36 | { | |
37 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
38 | return sprintf(buf, "0x%03X\n", core->id.id); | |
39 | } | |
fdcf4f81 GKH |
40 | static DEVICE_ATTR_RO(id); |
41 | ||
8369ae33 RM |
42 | static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf) |
43 | { | |
44 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
45 | return sprintf(buf, "0x%02X\n", core->id.rev); | |
46 | } | |
fdcf4f81 GKH |
47 | static DEVICE_ATTR_RO(rev); |
48 | ||
8369ae33 RM |
49 | static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf) |
50 | { | |
51 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
52 | return sprintf(buf, "0x%X\n", core->id.class); | |
53 | } | |
fdcf4f81 GKH |
54 | static DEVICE_ATTR_RO(class); |
55 | ||
56 | static struct attribute *bcma_device_attrs[] = { | |
57 | &dev_attr_manuf.attr, | |
58 | &dev_attr_id.attr, | |
59 | &dev_attr_rev.attr, | |
60 | &dev_attr_class.attr, | |
61 | NULL, | |
8369ae33 | 62 | }; |
fdcf4f81 | 63 | ATTRIBUTE_GROUPS(bcma_device); |
8369ae33 RM |
64 | |
65 | static struct bus_type bcma_bus_type = { | |
66 | .name = "bcma", | |
67 | .match = bcma_bus_match, | |
68 | .probe = bcma_device_probe, | |
69 | .remove = bcma_device_remove, | |
886b66ef | 70 | .uevent = bcma_device_uevent, |
fdcf4f81 | 71 | .dev_groups = bcma_device_groups, |
8369ae33 RM |
72 | }; |
73 | ||
6d5cfc9f RM |
74 | static u16 bcma_cc_core_id(struct bcma_bus *bus) |
75 | { | |
76 | if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) | |
77 | return BCMA_CORE_4706_CHIPCOMMON; | |
78 | return BCMA_CORE_CHIPCOMMON; | |
79 | } | |
80 | ||
1c9351cf | 81 | struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid) |
8369ae33 RM |
82 | { |
83 | struct bcma_device *core; | |
84 | ||
85 | list_for_each_entry(core, &bus->cores, list) { | |
86 | if (core->id.id == coreid) | |
87 | return core; | |
88 | } | |
89 | return NULL; | |
90 | } | |
1c9351cf | 91 | EXPORT_SYMBOL_GPL(bcma_find_core); |
8369ae33 | 92 | |
929a03ae HM |
93 | struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid, |
94 | u8 unit) | |
dfae7143 HM |
95 | { |
96 | struct bcma_device *core; | |
97 | ||
98 | list_for_each_entry(core, &bus->cores, list) { | |
99 | if (core->id.id == coreid && core->core_unit == unit) | |
100 | return core; | |
101 | } | |
102 | return NULL; | |
103 | } | |
104 | ||
88f9b65d RM |
105 | bool bcma_wait_value(struct bcma_device *core, u16 reg, u32 mask, u32 value, |
106 | int timeout) | |
107 | { | |
108 | unsigned long deadline = jiffies + timeout; | |
109 | u32 val; | |
110 | ||
111 | do { | |
112 | val = bcma_read32(core, reg); | |
113 | if ((val & mask) == value) | |
114 | return true; | |
115 | cpu_relax(); | |
116 | udelay(10); | |
117 | } while (!time_after_eq(jiffies, deadline)); | |
118 | ||
119 | bcma_warn(core->bus, "Timeout waiting for register 0x%04X!\n", reg); | |
120 | ||
121 | return false; | |
122 | } | |
123 | ||
8369ae33 RM |
124 | static void bcma_release_core_dev(struct device *dev) |
125 | { | |
126 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
ecd177c2 HM |
127 | if (core->io_addr) |
128 | iounmap(core->io_addr); | |
129 | if (core->io_wrap) | |
130 | iounmap(core->io_wrap); | |
8369ae33 RM |
131 | kfree(core); |
132 | } | |
133 | ||
134 | static int bcma_register_cores(struct bcma_bus *bus) | |
135 | { | |
136 | struct bcma_device *core; | |
137 | int err, dev_id = 0; | |
138 | ||
139 | list_for_each_entry(core, &bus->cores, list) { | |
140 | /* We support that cores ourself */ | |
141 | switch (core->id.id) { | |
6d5cfc9f | 142 | case BCMA_CORE_4706_CHIPCOMMON: |
8369ae33 RM |
143 | case BCMA_CORE_CHIPCOMMON: |
144 | case BCMA_CORE_PCI: | |
145 | case BCMA_CORE_PCIE: | |
21e0534a | 146 | case BCMA_CORE_MIPS_74K: |
e1ac4b40 | 147 | case BCMA_CORE_4706_MAC_GBIT_COMMON: |
8369ae33 RM |
148 | continue; |
149 | } | |
150 | ||
10419d08 RM |
151 | /* Only first GMAC core on BCM4706 is connected and working */ |
152 | if (core->id.id == BCMA_CORE_4706_MAC_GBIT && | |
153 | core->core_unit > 0) | |
154 | continue; | |
155 | ||
8369ae33 RM |
156 | core->dev.release = bcma_release_core_dev; |
157 | core->dev.bus = &bcma_bus_type; | |
8f9ada4f | 158 | dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id); |
8369ae33 RM |
159 | |
160 | switch (bus->hosttype) { | |
161 | case BCMA_HOSTTYPE_PCI: | |
162 | core->dev.parent = &bus->host_pci->dev; | |
1bdcd095 RM |
163 | core->dma_dev = &bus->host_pci->dev; |
164 | core->irq = bus->host_pci->irq; | |
8369ae33 | 165 | break; |
ecd177c2 HM |
166 | case BCMA_HOSTTYPE_SOC: |
167 | core->dev.dma_mask = &core->dev.coherent_dma_mask; | |
168 | core->dma_dev = &core->dev; | |
169 | break; | |
8369ae33 RM |
170 | case BCMA_HOSTTYPE_SDIO: |
171 | break; | |
172 | } | |
173 | ||
174 | err = device_register(&core->dev); | |
175 | if (err) { | |
3d9d8af3 RM |
176 | bcma_err(bus, |
177 | "Could not register dev for core 0x%03X\n", | |
178 | core->id.id); | |
08f336b8 | 179 | put_device(&core->dev); |
8369ae33 RM |
180 | continue; |
181 | } | |
182 | core->dev_registered = true; | |
183 | dev_id++; | |
184 | } | |
185 | ||
73e4dbe4 RM |
186 | #ifdef CONFIG_BCMA_DRIVER_MIPS |
187 | if (bus->drv_cc.pflash.present) { | |
188 | err = platform_device_register(&bcma_pflash_dev); | |
189 | if (err) | |
190 | bcma_err(bus, "Error registering parallel flash\n"); | |
191 | } | |
192 | #endif | |
193 | ||
d57ef3a6 RM |
194 | #ifdef CONFIG_BCMA_SFLASH |
195 | if (bus->drv_cc.sflash.present) { | |
196 | err = platform_device_register(&bcma_sflash_dev); | |
197 | if (err) | |
198 | bcma_err(bus, "Error registering serial flash\n"); | |
199 | } | |
200 | #endif | |
201 | ||
371a0044 RM |
202 | #ifdef CONFIG_BCMA_NFLASH |
203 | if (bus->drv_cc.nflash.present) { | |
204 | err = platform_device_register(&bcma_nflash_dev); | |
205 | if (err) | |
206 | bcma_err(bus, "Error registering NAND flash\n"); | |
207 | } | |
208 | #endif | |
cf0936b0 HM |
209 | err = bcma_gpio_init(&bus->drv_cc); |
210 | if (err == -ENOTSUPP) | |
211 | bcma_debug(bus, "GPIO driver not activated\n"); | |
212 | else if (err) | |
213 | bcma_err(bus, "Error registering GPIO driver: %i\n", err); | |
371a0044 | 214 | |
a4855f39 HM |
215 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) { |
216 | err = bcma_chipco_watchdog_register(&bus->drv_cc); | |
217 | if (err) | |
218 | bcma_err(bus, "Error registering watchdog driver\n"); | |
219 | } | |
220 | ||
8369ae33 RM |
221 | return 0; |
222 | } | |
223 | ||
224 | static void bcma_unregister_cores(struct bcma_bus *bus) | |
225 | { | |
1fffa905 | 226 | struct bcma_device *core, *tmp; |
8369ae33 | 227 | |
1fffa905 PH |
228 | list_for_each_entry_safe(core, tmp, &bus->cores, list) { |
229 | list_del(&core->list); | |
8369ae33 RM |
230 | if (core->dev_registered) |
231 | device_unregister(&core->dev); | |
232 | } | |
a4855f39 HM |
233 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) |
234 | platform_device_unregister(bus->drv_cc.watchdog); | |
8369ae33 RM |
235 | } |
236 | ||
0f58a01d | 237 | int bcma_bus_register(struct bcma_bus *bus) |
8369ae33 RM |
238 | { |
239 | int err; | |
240 | struct bcma_device *core; | |
241 | ||
8f9ada4f HM |
242 | mutex_lock(&bcma_buses_mutex); |
243 | bus->num = bcma_bus_next_num++; | |
244 | mutex_unlock(&bcma_buses_mutex); | |
245 | ||
8369ae33 RM |
246 | /* Scan for devices (cores) */ |
247 | err = bcma_bus_scan(bus); | |
248 | if (err) { | |
3d9d8af3 | 249 | bcma_err(bus, "Failed to scan: %d\n", err); |
1cabf7db | 250 | return err; |
8369ae33 RM |
251 | } |
252 | ||
30cfb023 HM |
253 | /* Early init CC core */ |
254 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); | |
255 | if (core) { | |
256 | bus->drv_cc.core = core; | |
257 | bcma_core_chipcommon_early_init(&bus->drv_cc); | |
258 | } | |
259 | ||
260 | /* Try to get SPROM */ | |
261 | err = bcma_sprom_get(bus); | |
262 | if (err == -ENOENT) { | |
263 | bcma_err(bus, "No SPROM available\n"); | |
264 | } else if (err) | |
265 | bcma_err(bus, "Failed to get SPROM: %d\n", err); | |
266 | ||
8369ae33 | 267 | /* Init CC core */ |
6d5cfc9f | 268 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
8369ae33 RM |
269 | if (core) { |
270 | bus->drv_cc.core = core; | |
271 | bcma_core_chipcommon_init(&bus->drv_cc); | |
272 | } | |
273 | ||
21e0534a HM |
274 | /* Init MIPS core */ |
275 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
276 | if (core) { | |
277 | bus->drv_mips.core = core; | |
278 | bcma_core_mips_init(&bus->drv_mips); | |
279 | } | |
280 | ||
8369ae33 | 281 | /* Init PCIE core */ |
dfae7143 HM |
282 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0); |
283 | if (core) { | |
284 | bus->drv_pci[0].core = core; | |
285 | bcma_core_pci_init(&bus->drv_pci[0]); | |
286 | } | |
287 | ||
288 | /* Init PCIE core */ | |
289 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1); | |
8369ae33 | 290 | if (core) { |
dfae7143 HM |
291 | bus->drv_pci[1].core = core; |
292 | bcma_core_pci_init(&bus->drv_pci[1]); | |
8369ae33 RM |
293 | } |
294 | ||
e1ac4b40 RM |
295 | /* Init GBIT MAC COMMON core */ |
296 | core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
297 | if (core) { | |
298 | bus->drv_gmac_cmn.core = core; | |
299 | bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn); | |
300 | } | |
301 | ||
8369ae33 RM |
302 | /* Register found cores */ |
303 | bcma_register_cores(bus); | |
304 | ||
3d9d8af3 | 305 | bcma_info(bus, "Bus registered\n"); |
8369ae33 RM |
306 | |
307 | return 0; | |
308 | } | |
8369ae33 RM |
309 | |
310 | void bcma_bus_unregister(struct bcma_bus *bus) | |
311 | { | |
ee915927 | 312 | struct bcma_device *cores[3]; |
c50ae947 HM |
313 | int err; |
314 | ||
315 | err = bcma_gpio_unregister(&bus->drv_cc); | |
316 | if (err == -EBUSY) | |
317 | bcma_err(bus, "Some GPIOs are still in use.\n"); | |
318 | else if (err) | |
319 | bcma_err(bus, "Can not unregister GPIO driver: %i\n", err); | |
ee915927 SSJ |
320 | |
321 | cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
322 | cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE); | |
323 | cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
324 | ||
8369ae33 | 325 | bcma_unregister_cores(bus); |
ee915927 SSJ |
326 | |
327 | kfree(cores[2]); | |
328 | kfree(cores[1]); | |
329 | kfree(cores[0]); | |
8369ae33 | 330 | } |
8369ae33 | 331 | |
517f43e5 HM |
332 | int __init bcma_bus_early_register(struct bcma_bus *bus, |
333 | struct bcma_device *core_cc, | |
334 | struct bcma_device *core_mips) | |
335 | { | |
336 | int err; | |
337 | struct bcma_device *core; | |
338 | struct bcma_device_id match; | |
339 | ||
340 | bcma_init_bus(bus); | |
341 | ||
342 | match.manuf = BCMA_MANUF_BCM; | |
6d5cfc9f | 343 | match.id = bcma_cc_core_id(bus); |
517f43e5 HM |
344 | match.class = BCMA_CL_SIM; |
345 | match.rev = BCMA_ANY_REV; | |
346 | ||
347 | /* Scan for chip common core */ | |
348 | err = bcma_bus_scan_early(bus, &match, core_cc); | |
349 | if (err) { | |
3d9d8af3 | 350 | bcma_err(bus, "Failed to scan for common core: %d\n", err); |
517f43e5 HM |
351 | return -1; |
352 | } | |
353 | ||
354 | match.manuf = BCMA_MANUF_MIPS; | |
355 | match.id = BCMA_CORE_MIPS_74K; | |
356 | match.class = BCMA_CL_SIM; | |
357 | match.rev = BCMA_ANY_REV; | |
358 | ||
359 | /* Scan for mips core */ | |
360 | err = bcma_bus_scan_early(bus, &match, core_mips); | |
361 | if (err) { | |
3d9d8af3 | 362 | bcma_err(bus, "Failed to scan for mips core: %d\n", err); |
517f43e5 HM |
363 | return -1; |
364 | } | |
365 | ||
49655bb8 | 366 | /* Early init CC core */ |
6d5cfc9f | 367 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
517f43e5 HM |
368 | if (core) { |
369 | bus->drv_cc.core = core; | |
49655bb8 | 370 | bcma_core_chipcommon_early_init(&bus->drv_cc); |
517f43e5 HM |
371 | } |
372 | ||
49655bb8 | 373 | /* Early init MIPS core */ |
21e0534a HM |
374 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); |
375 | if (core) { | |
376 | bus->drv_mips.core = core; | |
49655bb8 | 377 | bcma_core_mips_early_init(&bus->drv_mips); |
21e0534a HM |
378 | } |
379 | ||
3d9d8af3 | 380 | bcma_info(bus, "Early bus registered\n"); |
517f43e5 HM |
381 | |
382 | return 0; | |
383 | } | |
384 | ||
775ab521 | 385 | #ifdef CONFIG_PM |
685a4ef0 LT |
386 | int bcma_bus_suspend(struct bcma_bus *bus) |
387 | { | |
7d5869e7 LT |
388 | struct bcma_device *core; |
389 | ||
390 | list_for_each_entry(core, &bus->cores, list) { | |
391 | struct device_driver *drv = core->dev.driver; | |
392 | if (drv) { | |
393 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
394 | if (adrv->suspend) | |
395 | adrv->suspend(core); | |
396 | } | |
397 | } | |
685a4ef0 LT |
398 | return 0; |
399 | } | |
400 | ||
775ab521 RM |
401 | int bcma_bus_resume(struct bcma_bus *bus) |
402 | { | |
403 | struct bcma_device *core; | |
404 | ||
405 | /* Init CC core */ | |
6d5cfc9f | 406 | if (bus->drv_cc.core) { |
775ab521 RM |
407 | bus->drv_cc.setup_done = false; |
408 | bcma_core_chipcommon_init(&bus->drv_cc); | |
409 | } | |
410 | ||
7d5869e7 LT |
411 | list_for_each_entry(core, &bus->cores, list) { |
412 | struct device_driver *drv = core->dev.driver; | |
413 | if (drv) { | |
414 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
415 | if (adrv->resume) | |
416 | adrv->resume(core); | |
417 | } | |
418 | } | |
419 | ||
775ab521 RM |
420 | return 0; |
421 | } | |
422 | #endif | |
423 | ||
8369ae33 RM |
424 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
425 | { | |
426 | drv->drv.name = drv->name; | |
427 | drv->drv.bus = &bcma_bus_type; | |
428 | drv->drv.owner = owner; | |
429 | ||
430 | return driver_register(&drv->drv); | |
431 | } | |
432 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
433 | ||
434 | void bcma_driver_unregister(struct bcma_driver *drv) | |
435 | { | |
436 | driver_unregister(&drv->drv); | |
437 | } | |
438 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
439 | ||
440 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
441 | { | |
442 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
443 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
444 | const struct bcma_device_id *cid = &core->id; | |
445 | const struct bcma_device_id *did; | |
446 | ||
447 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
448 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
449 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
450 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
451 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
452 | return 1; | |
453 | } | |
454 | return 0; | |
455 | } | |
456 | ||
457 | static int bcma_device_probe(struct device *dev) | |
458 | { | |
459 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
460 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
461 | drv); | |
462 | int err = 0; | |
463 | ||
464 | if (adrv->probe) | |
465 | err = adrv->probe(core); | |
466 | ||
467 | return err; | |
468 | } | |
469 | ||
470 | static int bcma_device_remove(struct device *dev) | |
471 | { | |
472 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
473 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
474 | drv); | |
475 | ||
476 | if (adrv->remove) | |
477 | adrv->remove(core); | |
478 | ||
479 | return 0; | |
480 | } | |
481 | ||
886b66ef DW |
482 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
483 | { | |
484 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
485 | ||
486 | return add_uevent_var(env, | |
487 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
488 | core->id.manuf, core->id.id, | |
489 | core->id.rev, core->id.class); | |
490 | } | |
491 | ||
8369ae33 RM |
492 | static int __init bcma_modinit(void) |
493 | { | |
494 | int err; | |
495 | ||
496 | err = bus_register(&bcma_bus_type); | |
497 | if (err) | |
498 | return err; | |
499 | ||
500 | #ifdef CONFIG_BCMA_HOST_PCI | |
501 | err = bcma_host_pci_init(); | |
502 | if (err) { | |
503 | pr_err("PCI host initialization failed\n"); | |
504 | err = 0; | |
505 | } | |
506 | #endif | |
507 | ||
508 | return err; | |
509 | } | |
510 | fs_initcall(bcma_modinit); | |
511 | ||
512 | static void __exit bcma_modexit(void) | |
513 | { | |
514 | #ifdef CONFIG_BCMA_HOST_PCI | |
515 | bcma_host_pci_exit(); | |
516 | #endif | |
517 | bus_unregister(&bcma_bus_type); | |
518 | } | |
519 | module_exit(bcma_modexit) |