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 | ||
929a03ae HM |
81 | struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid, |
82 | u8 unit) | |
dfae7143 HM |
83 | { |
84 | struct bcma_device *core; | |
85 | ||
86 | list_for_each_entry(core, &bus->cores, list) { | |
87 | if (core->id.id == coreid && core->core_unit == unit) | |
88 | return core; | |
89 | } | |
90 | return NULL; | |
91 | } | |
b2395b8a | 92 | EXPORT_SYMBOL_GPL(bcma_find_core_unit); |
dfae7143 | 93 | |
88f9b65d RM |
94 | bool bcma_wait_value(struct bcma_device *core, u16 reg, u32 mask, u32 value, |
95 | int timeout) | |
96 | { | |
97 | unsigned long deadline = jiffies + timeout; | |
98 | u32 val; | |
99 | ||
100 | do { | |
101 | val = bcma_read32(core, reg); | |
102 | if ((val & mask) == value) | |
103 | return true; | |
104 | cpu_relax(); | |
105 | udelay(10); | |
106 | } while (!time_after_eq(jiffies, deadline)); | |
107 | ||
108 | bcma_warn(core->bus, "Timeout waiting for register 0x%04X!\n", reg); | |
109 | ||
110 | return false; | |
111 | } | |
112 | ||
8369ae33 RM |
113 | static void bcma_release_core_dev(struct device *dev) |
114 | { | |
115 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
ecd177c2 HM |
116 | if (core->io_addr) |
117 | iounmap(core->io_addr); | |
118 | if (core->io_wrap) | |
119 | iounmap(core->io_wrap); | |
8369ae33 RM |
120 | kfree(core); |
121 | } | |
122 | ||
123 | static int bcma_register_cores(struct bcma_bus *bus) | |
124 | { | |
125 | struct bcma_device *core; | |
126 | int err, dev_id = 0; | |
127 | ||
128 | list_for_each_entry(core, &bus->cores, list) { | |
129 | /* We support that cores ourself */ | |
130 | switch (core->id.id) { | |
6d5cfc9f | 131 | case BCMA_CORE_4706_CHIPCOMMON: |
8369ae33 RM |
132 | case BCMA_CORE_CHIPCOMMON: |
133 | case BCMA_CORE_PCI: | |
134 | case BCMA_CORE_PCIE: | |
f473832f | 135 | case BCMA_CORE_PCIE2: |
21e0534a | 136 | case BCMA_CORE_MIPS_74K: |
e1ac4b40 | 137 | case BCMA_CORE_4706_MAC_GBIT_COMMON: |
8369ae33 RM |
138 | continue; |
139 | } | |
140 | ||
10419d08 RM |
141 | /* Only first GMAC core on BCM4706 is connected and working */ |
142 | if (core->id.id == BCMA_CORE_4706_MAC_GBIT && | |
143 | core->core_unit > 0) | |
144 | continue; | |
145 | ||
8369ae33 RM |
146 | core->dev.release = bcma_release_core_dev; |
147 | core->dev.bus = &bcma_bus_type; | |
8f9ada4f | 148 | dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id); |
8369ae33 RM |
149 | |
150 | switch (bus->hosttype) { | |
151 | case BCMA_HOSTTYPE_PCI: | |
152 | core->dev.parent = &bus->host_pci->dev; | |
1bdcd095 RM |
153 | core->dma_dev = &bus->host_pci->dev; |
154 | core->irq = bus->host_pci->irq; | |
8369ae33 | 155 | break; |
ecd177c2 HM |
156 | case BCMA_HOSTTYPE_SOC: |
157 | core->dev.dma_mask = &core->dev.coherent_dma_mask; | |
158 | core->dma_dev = &core->dev; | |
159 | break; | |
8369ae33 RM |
160 | case BCMA_HOSTTYPE_SDIO: |
161 | break; | |
162 | } | |
163 | ||
164 | err = device_register(&core->dev); | |
165 | if (err) { | |
3d9d8af3 RM |
166 | bcma_err(bus, |
167 | "Could not register dev for core 0x%03X\n", | |
168 | core->id.id); | |
08f336b8 | 169 | put_device(&core->dev); |
8369ae33 RM |
170 | continue; |
171 | } | |
172 | core->dev_registered = true; | |
173 | dev_id++; | |
174 | } | |
175 | ||
73e4dbe4 RM |
176 | #ifdef CONFIG_BCMA_DRIVER_MIPS |
177 | if (bus->drv_cc.pflash.present) { | |
178 | err = platform_device_register(&bcma_pflash_dev); | |
179 | if (err) | |
180 | bcma_err(bus, "Error registering parallel flash\n"); | |
181 | } | |
182 | #endif | |
183 | ||
d57ef3a6 RM |
184 | #ifdef CONFIG_BCMA_SFLASH |
185 | if (bus->drv_cc.sflash.present) { | |
186 | err = platform_device_register(&bcma_sflash_dev); | |
187 | if (err) | |
188 | bcma_err(bus, "Error registering serial flash\n"); | |
189 | } | |
190 | #endif | |
191 | ||
371a0044 RM |
192 | #ifdef CONFIG_BCMA_NFLASH |
193 | if (bus->drv_cc.nflash.present) { | |
194 | err = platform_device_register(&bcma_nflash_dev); | |
195 | if (err) | |
196 | bcma_err(bus, "Error registering NAND flash\n"); | |
197 | } | |
198 | #endif | |
cf0936b0 HM |
199 | err = bcma_gpio_init(&bus->drv_cc); |
200 | if (err == -ENOTSUPP) | |
201 | bcma_debug(bus, "GPIO driver not activated\n"); | |
202 | else if (err) | |
203 | bcma_err(bus, "Error registering GPIO driver: %i\n", err); | |
371a0044 | 204 | |
a4855f39 HM |
205 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) { |
206 | err = bcma_chipco_watchdog_register(&bus->drv_cc); | |
207 | if (err) | |
208 | bcma_err(bus, "Error registering watchdog driver\n"); | |
209 | } | |
210 | ||
8369ae33 RM |
211 | return 0; |
212 | } | |
213 | ||
214 | static void bcma_unregister_cores(struct bcma_bus *bus) | |
215 | { | |
1fffa905 | 216 | struct bcma_device *core, *tmp; |
8369ae33 | 217 | |
1fffa905 PH |
218 | list_for_each_entry_safe(core, tmp, &bus->cores, list) { |
219 | list_del(&core->list); | |
8369ae33 RM |
220 | if (core->dev_registered) |
221 | device_unregister(&core->dev); | |
222 | } | |
a4855f39 HM |
223 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) |
224 | platform_device_unregister(bus->drv_cc.watchdog); | |
8369ae33 RM |
225 | } |
226 | ||
0f58a01d | 227 | int bcma_bus_register(struct bcma_bus *bus) |
8369ae33 RM |
228 | { |
229 | int err; | |
230 | struct bcma_device *core; | |
231 | ||
8f9ada4f HM |
232 | mutex_lock(&bcma_buses_mutex); |
233 | bus->num = bcma_bus_next_num++; | |
234 | mutex_unlock(&bcma_buses_mutex); | |
235 | ||
8369ae33 RM |
236 | /* Scan for devices (cores) */ |
237 | err = bcma_bus_scan(bus); | |
238 | if (err) { | |
3d9d8af3 | 239 | bcma_err(bus, "Failed to scan: %d\n", err); |
1cabf7db | 240 | return err; |
8369ae33 RM |
241 | } |
242 | ||
30cfb023 HM |
243 | /* Early init CC core */ |
244 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); | |
245 | if (core) { | |
246 | bus->drv_cc.core = core; | |
247 | bcma_core_chipcommon_early_init(&bus->drv_cc); | |
248 | } | |
249 | ||
250 | /* Try to get SPROM */ | |
251 | err = bcma_sprom_get(bus); | |
252 | if (err == -ENOENT) { | |
253 | bcma_err(bus, "No SPROM available\n"); | |
254 | } else if (err) | |
255 | bcma_err(bus, "Failed to get SPROM: %d\n", err); | |
256 | ||
8369ae33 | 257 | /* Init CC core */ |
6d5cfc9f | 258 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
8369ae33 RM |
259 | if (core) { |
260 | bus->drv_cc.core = core; | |
261 | bcma_core_chipcommon_init(&bus->drv_cc); | |
262 | } | |
263 | ||
21e0534a HM |
264 | /* Init MIPS core */ |
265 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
266 | if (core) { | |
267 | bus->drv_mips.core = core; | |
268 | bcma_core_mips_init(&bus->drv_mips); | |
269 | } | |
270 | ||
8369ae33 | 271 | /* Init PCIE core */ |
dfae7143 HM |
272 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0); |
273 | if (core) { | |
274 | bus->drv_pci[0].core = core; | |
275 | bcma_core_pci_init(&bus->drv_pci[0]); | |
276 | } | |
277 | ||
278 | /* Init PCIE core */ | |
279 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1); | |
8369ae33 | 280 | if (core) { |
dfae7143 HM |
281 | bus->drv_pci[1].core = core; |
282 | bcma_core_pci_init(&bus->drv_pci[1]); | |
8369ae33 RM |
283 | } |
284 | ||
f473832f RM |
285 | /* Init PCIe Gen 2 core */ |
286 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0); | |
287 | if (core) { | |
288 | bus->drv_pcie2.core = core; | |
289 | bcma_core_pcie2_init(&bus->drv_pcie2); | |
290 | } | |
291 | ||
e1ac4b40 RM |
292 | /* Init GBIT MAC COMMON core */ |
293 | core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
294 | if (core) { | |
295 | bus->drv_gmac_cmn.core = core; | |
296 | bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn); | |
297 | } | |
298 | ||
8369ae33 RM |
299 | /* Register found cores */ |
300 | bcma_register_cores(bus); | |
301 | ||
3d9d8af3 | 302 | bcma_info(bus, "Bus registered\n"); |
8369ae33 RM |
303 | |
304 | return 0; | |
305 | } | |
8369ae33 RM |
306 | |
307 | void bcma_bus_unregister(struct bcma_bus *bus) | |
308 | { | |
ee915927 | 309 | struct bcma_device *cores[3]; |
c50ae947 HM |
310 | int err; |
311 | ||
312 | err = bcma_gpio_unregister(&bus->drv_cc); | |
313 | if (err == -EBUSY) | |
314 | bcma_err(bus, "Some GPIOs are still in use.\n"); | |
315 | else if (err) | |
316 | bcma_err(bus, "Can not unregister GPIO driver: %i\n", err); | |
ee915927 SSJ |
317 | |
318 | cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
319 | cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE); | |
320 | cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
321 | ||
8369ae33 | 322 | bcma_unregister_cores(bus); |
ee915927 SSJ |
323 | |
324 | kfree(cores[2]); | |
325 | kfree(cores[1]); | |
326 | kfree(cores[0]); | |
8369ae33 | 327 | } |
8369ae33 | 328 | |
517f43e5 HM |
329 | int __init bcma_bus_early_register(struct bcma_bus *bus, |
330 | struct bcma_device *core_cc, | |
331 | struct bcma_device *core_mips) | |
332 | { | |
333 | int err; | |
334 | struct bcma_device *core; | |
335 | struct bcma_device_id match; | |
336 | ||
337 | bcma_init_bus(bus); | |
338 | ||
339 | match.manuf = BCMA_MANUF_BCM; | |
6d5cfc9f | 340 | match.id = bcma_cc_core_id(bus); |
517f43e5 HM |
341 | match.class = BCMA_CL_SIM; |
342 | match.rev = BCMA_ANY_REV; | |
343 | ||
344 | /* Scan for chip common core */ | |
345 | err = bcma_bus_scan_early(bus, &match, core_cc); | |
346 | if (err) { | |
3d9d8af3 | 347 | bcma_err(bus, "Failed to scan for common core: %d\n", err); |
517f43e5 HM |
348 | return -1; |
349 | } | |
350 | ||
351 | match.manuf = BCMA_MANUF_MIPS; | |
352 | match.id = BCMA_CORE_MIPS_74K; | |
353 | match.class = BCMA_CL_SIM; | |
354 | match.rev = BCMA_ANY_REV; | |
355 | ||
356 | /* Scan for mips core */ | |
357 | err = bcma_bus_scan_early(bus, &match, core_mips); | |
358 | if (err) { | |
3d9d8af3 | 359 | bcma_err(bus, "Failed to scan for mips core: %d\n", err); |
517f43e5 HM |
360 | return -1; |
361 | } | |
362 | ||
49655bb8 | 363 | /* Early init CC core */ |
6d5cfc9f | 364 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
517f43e5 HM |
365 | if (core) { |
366 | bus->drv_cc.core = core; | |
49655bb8 | 367 | bcma_core_chipcommon_early_init(&bus->drv_cc); |
517f43e5 HM |
368 | } |
369 | ||
49655bb8 | 370 | /* Early init MIPS core */ |
21e0534a HM |
371 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); |
372 | if (core) { | |
373 | bus->drv_mips.core = core; | |
49655bb8 | 374 | bcma_core_mips_early_init(&bus->drv_mips); |
21e0534a HM |
375 | } |
376 | ||
3d9d8af3 | 377 | bcma_info(bus, "Early bus registered\n"); |
517f43e5 HM |
378 | |
379 | return 0; | |
380 | } | |
381 | ||
775ab521 | 382 | #ifdef CONFIG_PM |
685a4ef0 LT |
383 | int bcma_bus_suspend(struct bcma_bus *bus) |
384 | { | |
7d5869e7 LT |
385 | struct bcma_device *core; |
386 | ||
387 | list_for_each_entry(core, &bus->cores, list) { | |
388 | struct device_driver *drv = core->dev.driver; | |
389 | if (drv) { | |
390 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
391 | if (adrv->suspend) | |
392 | adrv->suspend(core); | |
393 | } | |
394 | } | |
685a4ef0 LT |
395 | return 0; |
396 | } | |
397 | ||
775ab521 RM |
398 | int bcma_bus_resume(struct bcma_bus *bus) |
399 | { | |
400 | struct bcma_device *core; | |
401 | ||
402 | /* Init CC core */ | |
6d5cfc9f | 403 | if (bus->drv_cc.core) { |
775ab521 RM |
404 | bus->drv_cc.setup_done = false; |
405 | bcma_core_chipcommon_init(&bus->drv_cc); | |
406 | } | |
407 | ||
7d5869e7 LT |
408 | list_for_each_entry(core, &bus->cores, list) { |
409 | struct device_driver *drv = core->dev.driver; | |
410 | if (drv) { | |
411 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
412 | if (adrv->resume) | |
413 | adrv->resume(core); | |
414 | } | |
415 | } | |
416 | ||
775ab521 RM |
417 | return 0; |
418 | } | |
419 | #endif | |
420 | ||
8369ae33 RM |
421 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
422 | { | |
423 | drv->drv.name = drv->name; | |
424 | drv->drv.bus = &bcma_bus_type; | |
425 | drv->drv.owner = owner; | |
426 | ||
427 | return driver_register(&drv->drv); | |
428 | } | |
429 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
430 | ||
431 | void bcma_driver_unregister(struct bcma_driver *drv) | |
432 | { | |
433 | driver_unregister(&drv->drv); | |
434 | } | |
435 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
436 | ||
437 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
438 | { | |
439 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
440 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
441 | const struct bcma_device_id *cid = &core->id; | |
442 | const struct bcma_device_id *did; | |
443 | ||
444 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
445 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
446 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
447 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
448 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
449 | return 1; | |
450 | } | |
451 | return 0; | |
452 | } | |
453 | ||
454 | static int bcma_device_probe(struct device *dev) | |
455 | { | |
456 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
457 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
458 | drv); | |
459 | int err = 0; | |
460 | ||
461 | if (adrv->probe) | |
462 | err = adrv->probe(core); | |
463 | ||
464 | return err; | |
465 | } | |
466 | ||
467 | static int bcma_device_remove(struct device *dev) | |
468 | { | |
469 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
470 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
471 | drv); | |
472 | ||
473 | if (adrv->remove) | |
474 | adrv->remove(core); | |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
886b66ef DW |
479 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
480 | { | |
481 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
482 | ||
483 | return add_uevent_var(env, | |
484 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
485 | core->id.manuf, core->id.id, | |
486 | core->id.rev, core->id.class); | |
487 | } | |
488 | ||
8369ae33 RM |
489 | static int __init bcma_modinit(void) |
490 | { | |
491 | int err; | |
492 | ||
493 | err = bus_register(&bcma_bus_type); | |
494 | if (err) | |
495 | return err; | |
496 | ||
497 | #ifdef CONFIG_BCMA_HOST_PCI | |
498 | err = bcma_host_pci_init(); | |
499 | if (err) { | |
500 | pr_err("PCI host initialization failed\n"); | |
501 | err = 0; | |
502 | } | |
503 | #endif | |
504 | ||
505 | return err; | |
506 | } | |
507 | fs_initcall(bcma_modinit); | |
508 | ||
509 | static void __exit bcma_modexit(void) | |
510 | { | |
511 | #ifdef CONFIG_BCMA_HOST_PCI | |
512 | bcma_host_pci_exit(); | |
513 | #endif | |
514 | bus_unregister(&bcma_bus_type); | |
515 | } | |
516 | module_exit(bcma_modexit) |