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 RM |
83 | |
84 | static void bcma_release_core_dev(struct device *dev) | |
85 | { | |
86 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
ecd177c2 HM |
87 | if (core->io_addr) |
88 | iounmap(core->io_addr); | |
89 | if (core->io_wrap) | |
90 | iounmap(core->io_wrap); | |
8369ae33 RM |
91 | kfree(core); |
92 | } | |
93 | ||
94 | static int bcma_register_cores(struct bcma_bus *bus) | |
95 | { | |
96 | struct bcma_device *core; | |
97 | int err, dev_id = 0; | |
98 | ||
99 | list_for_each_entry(core, &bus->cores, list) { | |
100 | /* We support that cores ourself */ | |
101 | switch (core->id.id) { | |
6d5cfc9f | 102 | case BCMA_CORE_4706_CHIPCOMMON: |
8369ae33 RM |
103 | case BCMA_CORE_CHIPCOMMON: |
104 | case BCMA_CORE_PCI: | |
105 | case BCMA_CORE_PCIE: | |
21e0534a | 106 | case BCMA_CORE_MIPS_74K: |
e1ac4b40 | 107 | case BCMA_CORE_4706_MAC_GBIT_COMMON: |
8369ae33 RM |
108 | continue; |
109 | } | |
110 | ||
111 | core->dev.release = bcma_release_core_dev; | |
112 | core->dev.bus = &bcma_bus_type; | |
8f9ada4f | 113 | dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id); |
8369ae33 RM |
114 | |
115 | switch (bus->hosttype) { | |
116 | case BCMA_HOSTTYPE_PCI: | |
117 | core->dev.parent = &bus->host_pci->dev; | |
1bdcd095 RM |
118 | core->dma_dev = &bus->host_pci->dev; |
119 | core->irq = bus->host_pci->irq; | |
8369ae33 | 120 | break; |
ecd177c2 HM |
121 | case BCMA_HOSTTYPE_SOC: |
122 | core->dev.dma_mask = &core->dev.coherent_dma_mask; | |
123 | core->dma_dev = &core->dev; | |
124 | break; | |
8369ae33 RM |
125 | case BCMA_HOSTTYPE_SDIO: |
126 | break; | |
127 | } | |
128 | ||
129 | err = device_register(&core->dev); | |
130 | if (err) { | |
3d9d8af3 RM |
131 | bcma_err(bus, |
132 | "Could not register dev for core 0x%03X\n", | |
133 | core->id.id); | |
8369ae33 RM |
134 | continue; |
135 | } | |
136 | core->dev_registered = true; | |
137 | dev_id++; | |
138 | } | |
139 | ||
d57ef3a6 RM |
140 | #ifdef CONFIG_BCMA_SFLASH |
141 | if (bus->drv_cc.sflash.present) { | |
142 | err = platform_device_register(&bcma_sflash_dev); | |
143 | if (err) | |
144 | bcma_err(bus, "Error registering serial flash\n"); | |
145 | } | |
146 | #endif | |
147 | ||
371a0044 RM |
148 | #ifdef CONFIG_BCMA_NFLASH |
149 | if (bus->drv_cc.nflash.present) { | |
150 | err = platform_device_register(&bcma_nflash_dev); | |
151 | if (err) | |
152 | bcma_err(bus, "Error registering NAND flash\n"); | |
153 | } | |
154 | #endif | |
155 | ||
8369ae33 RM |
156 | return 0; |
157 | } | |
158 | ||
159 | static void bcma_unregister_cores(struct bcma_bus *bus) | |
160 | { | |
1fffa905 | 161 | struct bcma_device *core, *tmp; |
8369ae33 | 162 | |
1fffa905 PH |
163 | list_for_each_entry_safe(core, tmp, &bus->cores, list) { |
164 | list_del(&core->list); | |
8369ae33 RM |
165 | if (core->dev_registered) |
166 | device_unregister(&core->dev); | |
167 | } | |
168 | } | |
169 | ||
d1a7a8e1 | 170 | int __devinit bcma_bus_register(struct bcma_bus *bus) |
8369ae33 RM |
171 | { |
172 | int err; | |
173 | struct bcma_device *core; | |
174 | ||
8f9ada4f HM |
175 | mutex_lock(&bcma_buses_mutex); |
176 | bus->num = bcma_bus_next_num++; | |
177 | mutex_unlock(&bcma_buses_mutex); | |
178 | ||
8369ae33 RM |
179 | /* Scan for devices (cores) */ |
180 | err = bcma_bus_scan(bus); | |
181 | if (err) { | |
3d9d8af3 | 182 | bcma_err(bus, "Failed to scan: %d\n", err); |
8369ae33 RM |
183 | return -1; |
184 | } | |
185 | ||
186 | /* Init CC core */ | |
6d5cfc9f | 187 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
8369ae33 RM |
188 | if (core) { |
189 | bus->drv_cc.core = core; | |
190 | bcma_core_chipcommon_init(&bus->drv_cc); | |
191 | } | |
192 | ||
21e0534a HM |
193 | /* Init MIPS core */ |
194 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
195 | if (core) { | |
196 | bus->drv_mips.core = core; | |
197 | bcma_core_mips_init(&bus->drv_mips); | |
198 | } | |
199 | ||
8369ae33 RM |
200 | /* Init PCIE core */ |
201 | core = bcma_find_core(bus, BCMA_CORE_PCIE); | |
202 | if (core) { | |
203 | bus->drv_pci.core = core; | |
204 | bcma_core_pci_init(&bus->drv_pci); | |
205 | } | |
206 | ||
e1ac4b40 RM |
207 | /* Init GBIT MAC COMMON core */ |
208 | core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
209 | if (core) { | |
210 | bus->drv_gmac_cmn.core = core; | |
211 | bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn); | |
212 | } | |
213 | ||
27f18dc2 RM |
214 | /* Try to get SPROM */ |
215 | err = bcma_sprom_get(bus); | |
534e7a45 | 216 | if (err == -ENOENT) { |
3d9d8af3 | 217 | bcma_err(bus, "No SPROM available\n"); |
2e6b4119 | 218 | } else if (err) |
3d9d8af3 | 219 | bcma_err(bus, "Failed to get SPROM: %d\n", err); |
27f18dc2 | 220 | |
8369ae33 RM |
221 | /* Register found cores */ |
222 | bcma_register_cores(bus); | |
223 | ||
3d9d8af3 | 224 | bcma_info(bus, "Bus registered\n"); |
8369ae33 RM |
225 | |
226 | return 0; | |
227 | } | |
8369ae33 RM |
228 | |
229 | void bcma_bus_unregister(struct bcma_bus *bus) | |
230 | { | |
ee915927 SSJ |
231 | struct bcma_device *cores[3]; |
232 | ||
233 | cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
234 | cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE); | |
235 | cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
236 | ||
8369ae33 | 237 | bcma_unregister_cores(bus); |
ee915927 SSJ |
238 | |
239 | kfree(cores[2]); | |
240 | kfree(cores[1]); | |
241 | kfree(cores[0]); | |
8369ae33 | 242 | } |
8369ae33 | 243 | |
517f43e5 HM |
244 | int __init bcma_bus_early_register(struct bcma_bus *bus, |
245 | struct bcma_device *core_cc, | |
246 | struct bcma_device *core_mips) | |
247 | { | |
248 | int err; | |
249 | struct bcma_device *core; | |
250 | struct bcma_device_id match; | |
251 | ||
252 | bcma_init_bus(bus); | |
253 | ||
254 | match.manuf = BCMA_MANUF_BCM; | |
6d5cfc9f | 255 | match.id = bcma_cc_core_id(bus); |
517f43e5 HM |
256 | match.class = BCMA_CL_SIM; |
257 | match.rev = BCMA_ANY_REV; | |
258 | ||
259 | /* Scan for chip common core */ | |
260 | err = bcma_bus_scan_early(bus, &match, core_cc); | |
261 | if (err) { | |
3d9d8af3 | 262 | bcma_err(bus, "Failed to scan for common core: %d\n", err); |
517f43e5 HM |
263 | return -1; |
264 | } | |
265 | ||
266 | match.manuf = BCMA_MANUF_MIPS; | |
267 | match.id = BCMA_CORE_MIPS_74K; | |
268 | match.class = BCMA_CL_SIM; | |
269 | match.rev = BCMA_ANY_REV; | |
270 | ||
271 | /* Scan for mips core */ | |
272 | err = bcma_bus_scan_early(bus, &match, core_mips); | |
273 | if (err) { | |
3d9d8af3 | 274 | bcma_err(bus, "Failed to scan for mips core: %d\n", err); |
517f43e5 HM |
275 | return -1; |
276 | } | |
277 | ||
278 | /* Init CC core */ | |
6d5cfc9f | 279 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
517f43e5 HM |
280 | if (core) { |
281 | bus->drv_cc.core = core; | |
282 | bcma_core_chipcommon_init(&bus->drv_cc); | |
283 | } | |
284 | ||
21e0534a HM |
285 | /* Init MIPS core */ |
286 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
287 | if (core) { | |
288 | bus->drv_mips.core = core; | |
289 | bcma_core_mips_init(&bus->drv_mips); | |
290 | } | |
291 | ||
3d9d8af3 | 292 | bcma_info(bus, "Early bus registered\n"); |
517f43e5 HM |
293 | |
294 | return 0; | |
295 | } | |
296 | ||
775ab521 | 297 | #ifdef CONFIG_PM |
685a4ef0 LT |
298 | int bcma_bus_suspend(struct bcma_bus *bus) |
299 | { | |
7d5869e7 LT |
300 | struct bcma_device *core; |
301 | ||
302 | list_for_each_entry(core, &bus->cores, list) { | |
303 | struct device_driver *drv = core->dev.driver; | |
304 | if (drv) { | |
305 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
306 | if (adrv->suspend) | |
307 | adrv->suspend(core); | |
308 | } | |
309 | } | |
685a4ef0 LT |
310 | return 0; |
311 | } | |
312 | ||
775ab521 RM |
313 | int bcma_bus_resume(struct bcma_bus *bus) |
314 | { | |
315 | struct bcma_device *core; | |
316 | ||
317 | /* Init CC core */ | |
6d5cfc9f | 318 | if (bus->drv_cc.core) { |
775ab521 RM |
319 | bus->drv_cc.setup_done = false; |
320 | bcma_core_chipcommon_init(&bus->drv_cc); | |
321 | } | |
322 | ||
7d5869e7 LT |
323 | list_for_each_entry(core, &bus->cores, list) { |
324 | struct device_driver *drv = core->dev.driver; | |
325 | if (drv) { | |
326 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
327 | if (adrv->resume) | |
328 | adrv->resume(core); | |
329 | } | |
330 | } | |
331 | ||
775ab521 RM |
332 | return 0; |
333 | } | |
334 | #endif | |
335 | ||
8369ae33 RM |
336 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
337 | { | |
338 | drv->drv.name = drv->name; | |
339 | drv->drv.bus = &bcma_bus_type; | |
340 | drv->drv.owner = owner; | |
341 | ||
342 | return driver_register(&drv->drv); | |
343 | } | |
344 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
345 | ||
346 | void bcma_driver_unregister(struct bcma_driver *drv) | |
347 | { | |
348 | driver_unregister(&drv->drv); | |
349 | } | |
350 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
351 | ||
352 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
353 | { | |
354 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
355 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
356 | const struct bcma_device_id *cid = &core->id; | |
357 | const struct bcma_device_id *did; | |
358 | ||
359 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
360 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
361 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
362 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
363 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
364 | return 1; | |
365 | } | |
366 | return 0; | |
367 | } | |
368 | ||
369 | static int bcma_device_probe(struct device *dev) | |
370 | { | |
371 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
372 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
373 | drv); | |
374 | int err = 0; | |
375 | ||
376 | if (adrv->probe) | |
377 | err = adrv->probe(core); | |
378 | ||
379 | return err; | |
380 | } | |
381 | ||
382 | static int bcma_device_remove(struct device *dev) | |
383 | { | |
384 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
385 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
386 | drv); | |
387 | ||
388 | if (adrv->remove) | |
389 | adrv->remove(core); | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
886b66ef DW |
394 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
395 | { | |
396 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
397 | ||
398 | return add_uevent_var(env, | |
399 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
400 | core->id.manuf, core->id.id, | |
401 | core->id.rev, core->id.class); | |
402 | } | |
403 | ||
8369ae33 RM |
404 | static int __init bcma_modinit(void) |
405 | { | |
406 | int err; | |
407 | ||
408 | err = bus_register(&bcma_bus_type); | |
409 | if (err) | |
410 | return err; | |
411 | ||
412 | #ifdef CONFIG_BCMA_HOST_PCI | |
413 | err = bcma_host_pci_init(); | |
414 | if (err) { | |
415 | pr_err("PCI host initialization failed\n"); | |
416 | err = 0; | |
417 | } | |
418 | #endif | |
419 | ||
420 | return err; | |
421 | } | |
422 | fs_initcall(bcma_modinit); | |
423 | ||
424 | static void __exit bcma_modexit(void) | |
425 | { | |
426 | #ifdef CONFIG_BCMA_HOST_PCI | |
427 | bcma_host_pci_exit(); | |
428 | #endif | |
429 | bus_unregister(&bcma_bus_type); | |
430 | } | |
431 | module_exit(bcma_modexit) |