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 | |
dfae7143 HM |
84 | static struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid, |
85 | u8 unit) | |
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 | ||
d57ef3a6 RM |
152 | #ifdef CONFIG_BCMA_SFLASH |
153 | if (bus->drv_cc.sflash.present) { | |
154 | err = platform_device_register(&bcma_sflash_dev); | |
155 | if (err) | |
156 | bcma_err(bus, "Error registering serial flash\n"); | |
157 | } | |
158 | #endif | |
159 | ||
371a0044 RM |
160 | #ifdef CONFIG_BCMA_NFLASH |
161 | if (bus->drv_cc.nflash.present) { | |
162 | err = platform_device_register(&bcma_nflash_dev); | |
163 | if (err) | |
164 | bcma_err(bus, "Error registering NAND flash\n"); | |
165 | } | |
166 | #endif | |
167 | ||
8369ae33 RM |
168 | return 0; |
169 | } | |
170 | ||
171 | static void bcma_unregister_cores(struct bcma_bus *bus) | |
172 | { | |
1fffa905 | 173 | struct bcma_device *core, *tmp; |
8369ae33 | 174 | |
1fffa905 PH |
175 | list_for_each_entry_safe(core, tmp, &bus->cores, list) { |
176 | list_del(&core->list); | |
8369ae33 RM |
177 | if (core->dev_registered) |
178 | device_unregister(&core->dev); | |
179 | } | |
180 | } | |
181 | ||
d1a7a8e1 | 182 | int __devinit bcma_bus_register(struct bcma_bus *bus) |
8369ae33 RM |
183 | { |
184 | int err; | |
185 | struct bcma_device *core; | |
186 | ||
8f9ada4f HM |
187 | mutex_lock(&bcma_buses_mutex); |
188 | bus->num = bcma_bus_next_num++; | |
189 | mutex_unlock(&bcma_buses_mutex); | |
190 | ||
8369ae33 RM |
191 | /* Scan for devices (cores) */ |
192 | err = bcma_bus_scan(bus); | |
193 | if (err) { | |
3d9d8af3 | 194 | bcma_err(bus, "Failed to scan: %d\n", err); |
8369ae33 RM |
195 | return -1; |
196 | } | |
197 | ||
30cfb023 HM |
198 | /* Early init CC core */ |
199 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); | |
200 | if (core) { | |
201 | bus->drv_cc.core = core; | |
202 | bcma_core_chipcommon_early_init(&bus->drv_cc); | |
203 | } | |
204 | ||
205 | /* Try to get SPROM */ | |
206 | err = bcma_sprom_get(bus); | |
207 | if (err == -ENOENT) { | |
208 | bcma_err(bus, "No SPROM available\n"); | |
209 | } else if (err) | |
210 | bcma_err(bus, "Failed to get SPROM: %d\n", err); | |
211 | ||
8369ae33 | 212 | /* Init CC core */ |
6d5cfc9f | 213 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
8369ae33 RM |
214 | if (core) { |
215 | bus->drv_cc.core = core; | |
216 | bcma_core_chipcommon_init(&bus->drv_cc); | |
217 | } | |
218 | ||
21e0534a HM |
219 | /* Init MIPS core */ |
220 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
221 | if (core) { | |
222 | bus->drv_mips.core = core; | |
223 | bcma_core_mips_init(&bus->drv_mips); | |
224 | } | |
225 | ||
8369ae33 | 226 | /* Init PCIE core */ |
dfae7143 HM |
227 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0); |
228 | if (core) { | |
229 | bus->drv_pci[0].core = core; | |
230 | bcma_core_pci_init(&bus->drv_pci[0]); | |
231 | } | |
232 | ||
233 | /* Init PCIE core */ | |
234 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1); | |
8369ae33 | 235 | if (core) { |
dfae7143 HM |
236 | bus->drv_pci[1].core = core; |
237 | bcma_core_pci_init(&bus->drv_pci[1]); | |
8369ae33 RM |
238 | } |
239 | ||
e1ac4b40 RM |
240 | /* Init GBIT MAC COMMON core */ |
241 | core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
242 | if (core) { | |
243 | bus->drv_gmac_cmn.core = core; | |
244 | bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn); | |
245 | } | |
246 | ||
8369ae33 RM |
247 | /* Register found cores */ |
248 | bcma_register_cores(bus); | |
249 | ||
3d9d8af3 | 250 | bcma_info(bus, "Bus registered\n"); |
8369ae33 RM |
251 | |
252 | return 0; | |
253 | } | |
8369ae33 RM |
254 | |
255 | void bcma_bus_unregister(struct bcma_bus *bus) | |
256 | { | |
ee915927 SSJ |
257 | struct bcma_device *cores[3]; |
258 | ||
259 | cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
260 | cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE); | |
261 | cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
262 | ||
8369ae33 | 263 | bcma_unregister_cores(bus); |
ee915927 SSJ |
264 | |
265 | kfree(cores[2]); | |
266 | kfree(cores[1]); | |
267 | kfree(cores[0]); | |
8369ae33 | 268 | } |
8369ae33 | 269 | |
517f43e5 HM |
270 | int __init bcma_bus_early_register(struct bcma_bus *bus, |
271 | struct bcma_device *core_cc, | |
272 | struct bcma_device *core_mips) | |
273 | { | |
274 | int err; | |
275 | struct bcma_device *core; | |
276 | struct bcma_device_id match; | |
277 | ||
278 | bcma_init_bus(bus); | |
279 | ||
280 | match.manuf = BCMA_MANUF_BCM; | |
6d5cfc9f | 281 | match.id = bcma_cc_core_id(bus); |
517f43e5 HM |
282 | match.class = BCMA_CL_SIM; |
283 | match.rev = BCMA_ANY_REV; | |
284 | ||
285 | /* Scan for chip common core */ | |
286 | err = bcma_bus_scan_early(bus, &match, core_cc); | |
287 | if (err) { | |
3d9d8af3 | 288 | bcma_err(bus, "Failed to scan for common core: %d\n", err); |
517f43e5 HM |
289 | return -1; |
290 | } | |
291 | ||
292 | match.manuf = BCMA_MANUF_MIPS; | |
293 | match.id = BCMA_CORE_MIPS_74K; | |
294 | match.class = BCMA_CL_SIM; | |
295 | match.rev = BCMA_ANY_REV; | |
296 | ||
297 | /* Scan for mips core */ | |
298 | err = bcma_bus_scan_early(bus, &match, core_mips); | |
299 | if (err) { | |
3d9d8af3 | 300 | bcma_err(bus, "Failed to scan for mips core: %d\n", err); |
517f43e5 HM |
301 | return -1; |
302 | } | |
303 | ||
49655bb8 | 304 | /* Early init CC core */ |
6d5cfc9f | 305 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
517f43e5 HM |
306 | if (core) { |
307 | bus->drv_cc.core = core; | |
49655bb8 | 308 | bcma_core_chipcommon_early_init(&bus->drv_cc); |
517f43e5 HM |
309 | } |
310 | ||
49655bb8 | 311 | /* Early init MIPS core */ |
21e0534a HM |
312 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); |
313 | if (core) { | |
314 | bus->drv_mips.core = core; | |
49655bb8 | 315 | bcma_core_mips_early_init(&bus->drv_mips); |
21e0534a HM |
316 | } |
317 | ||
3d9d8af3 | 318 | bcma_info(bus, "Early bus registered\n"); |
517f43e5 HM |
319 | |
320 | return 0; | |
321 | } | |
322 | ||
775ab521 | 323 | #ifdef CONFIG_PM |
685a4ef0 LT |
324 | int bcma_bus_suspend(struct bcma_bus *bus) |
325 | { | |
7d5869e7 LT |
326 | struct bcma_device *core; |
327 | ||
328 | list_for_each_entry(core, &bus->cores, list) { | |
329 | struct device_driver *drv = core->dev.driver; | |
330 | if (drv) { | |
331 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
332 | if (adrv->suspend) | |
333 | adrv->suspend(core); | |
334 | } | |
335 | } | |
685a4ef0 LT |
336 | return 0; |
337 | } | |
338 | ||
775ab521 RM |
339 | int bcma_bus_resume(struct bcma_bus *bus) |
340 | { | |
341 | struct bcma_device *core; | |
342 | ||
343 | /* Init CC core */ | |
6d5cfc9f | 344 | if (bus->drv_cc.core) { |
775ab521 RM |
345 | bus->drv_cc.setup_done = false; |
346 | bcma_core_chipcommon_init(&bus->drv_cc); | |
347 | } | |
348 | ||
7d5869e7 LT |
349 | list_for_each_entry(core, &bus->cores, list) { |
350 | struct device_driver *drv = core->dev.driver; | |
351 | if (drv) { | |
352 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
353 | if (adrv->resume) | |
354 | adrv->resume(core); | |
355 | } | |
356 | } | |
357 | ||
775ab521 RM |
358 | return 0; |
359 | } | |
360 | #endif | |
361 | ||
8369ae33 RM |
362 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
363 | { | |
364 | drv->drv.name = drv->name; | |
365 | drv->drv.bus = &bcma_bus_type; | |
366 | drv->drv.owner = owner; | |
367 | ||
368 | return driver_register(&drv->drv); | |
369 | } | |
370 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
371 | ||
372 | void bcma_driver_unregister(struct bcma_driver *drv) | |
373 | { | |
374 | driver_unregister(&drv->drv); | |
375 | } | |
376 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
377 | ||
378 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
379 | { | |
380 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
381 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
382 | const struct bcma_device_id *cid = &core->id; | |
383 | const struct bcma_device_id *did; | |
384 | ||
385 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
386 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
387 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
388 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
389 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
390 | return 1; | |
391 | } | |
392 | return 0; | |
393 | } | |
394 | ||
395 | static int bcma_device_probe(struct device *dev) | |
396 | { | |
397 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
398 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
399 | drv); | |
400 | int err = 0; | |
401 | ||
402 | if (adrv->probe) | |
403 | err = adrv->probe(core); | |
404 | ||
405 | return err; | |
406 | } | |
407 | ||
408 | static int bcma_device_remove(struct device *dev) | |
409 | { | |
410 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
411 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
412 | drv); | |
413 | ||
414 | if (adrv->remove) | |
415 | adrv->remove(core); | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
886b66ef DW |
420 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
421 | { | |
422 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
423 | ||
424 | return add_uevent_var(env, | |
425 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
426 | core->id.manuf, core->id.id, | |
427 | core->id.rev, core->id.class); | |
428 | } | |
429 | ||
8369ae33 RM |
430 | static int __init bcma_modinit(void) |
431 | { | |
432 | int err; | |
433 | ||
434 | err = bus_register(&bcma_bus_type); | |
435 | if (err) | |
436 | return err; | |
437 | ||
438 | #ifdef CONFIG_BCMA_HOST_PCI | |
439 | err = bcma_host_pci_init(); | |
440 | if (err) { | |
441 | pr_err("PCI host initialization failed\n"); | |
442 | err = 0; | |
443 | } | |
444 | #endif | |
445 | ||
446 | return err; | |
447 | } | |
448 | fs_initcall(bcma_modinit); | |
449 | ||
450 | static void __exit bcma_modexit(void) | |
451 | { | |
452 | #ifdef CONFIG_BCMA_HOST_PCI | |
453 | bcma_host_pci_exit(); | |
454 | #endif | |
455 | bus_unregister(&bcma_bus_type); | |
456 | } | |
457 | module_exit(bcma_modexit) |