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