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