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Commit | Line | Data |
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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 | { | |
161 | struct bcma_device *core; | |
162 | ||
163 | list_for_each_entry(core, &bus->cores, list) { | |
164 | if (core->dev_registered) | |
165 | device_unregister(&core->dev); | |
166 | } | |
167 | } | |
168 | ||
d1a7a8e1 | 169 | int __devinit bcma_bus_register(struct bcma_bus *bus) |
8369ae33 RM |
170 | { |
171 | int err; | |
172 | struct bcma_device *core; | |
173 | ||
8f9ada4f HM |
174 | mutex_lock(&bcma_buses_mutex); |
175 | bus->num = bcma_bus_next_num++; | |
176 | mutex_unlock(&bcma_buses_mutex); | |
177 | ||
8369ae33 RM |
178 | /* Scan for devices (cores) */ |
179 | err = bcma_bus_scan(bus); | |
180 | if (err) { | |
3d9d8af3 | 181 | bcma_err(bus, "Failed to scan: %d\n", err); |
8369ae33 RM |
182 | return -1; |
183 | } | |
184 | ||
185 | /* Init CC core */ | |
6d5cfc9f | 186 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
8369ae33 RM |
187 | if (core) { |
188 | bus->drv_cc.core = core; | |
189 | bcma_core_chipcommon_init(&bus->drv_cc); | |
190 | } | |
191 | ||
21e0534a HM |
192 | /* Init MIPS core */ |
193 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
194 | if (core) { | |
195 | bus->drv_mips.core = core; | |
196 | bcma_core_mips_init(&bus->drv_mips); | |
197 | } | |
198 | ||
8369ae33 RM |
199 | /* Init PCIE core */ |
200 | core = bcma_find_core(bus, BCMA_CORE_PCIE); | |
201 | if (core) { | |
202 | bus->drv_pci.core = core; | |
203 | bcma_core_pci_init(&bus->drv_pci); | |
204 | } | |
205 | ||
e1ac4b40 RM |
206 | /* Init GBIT MAC COMMON core */ |
207 | core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
208 | if (core) { | |
209 | bus->drv_gmac_cmn.core = core; | |
210 | bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn); | |
211 | } | |
212 | ||
27f18dc2 RM |
213 | /* Try to get SPROM */ |
214 | err = bcma_sprom_get(bus); | |
534e7a45 | 215 | if (err == -ENOENT) { |
3d9d8af3 | 216 | bcma_err(bus, "No SPROM available\n"); |
2e6b4119 | 217 | } else if (err) |
3d9d8af3 | 218 | bcma_err(bus, "Failed to get SPROM: %d\n", err); |
27f18dc2 | 219 | |
8369ae33 RM |
220 | /* Register found cores */ |
221 | bcma_register_cores(bus); | |
222 | ||
3d9d8af3 | 223 | bcma_info(bus, "Bus registered\n"); |
8369ae33 RM |
224 | |
225 | return 0; | |
226 | } | |
8369ae33 RM |
227 | |
228 | void bcma_bus_unregister(struct bcma_bus *bus) | |
229 | { | |
ee915927 SSJ |
230 | struct bcma_device *cores[3]; |
231 | ||
232 | cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
233 | cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE); | |
234 | cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
235 | ||
8369ae33 | 236 | bcma_unregister_cores(bus); |
ee915927 SSJ |
237 | |
238 | kfree(cores[2]); | |
239 | kfree(cores[1]); | |
240 | kfree(cores[0]); | |
8369ae33 | 241 | } |
8369ae33 | 242 | |
517f43e5 HM |
243 | int __init bcma_bus_early_register(struct bcma_bus *bus, |
244 | struct bcma_device *core_cc, | |
245 | struct bcma_device *core_mips) | |
246 | { | |
247 | int err; | |
248 | struct bcma_device *core; | |
249 | struct bcma_device_id match; | |
250 | ||
251 | bcma_init_bus(bus); | |
252 | ||
253 | match.manuf = BCMA_MANUF_BCM; | |
6d5cfc9f | 254 | match.id = bcma_cc_core_id(bus); |
517f43e5 HM |
255 | match.class = BCMA_CL_SIM; |
256 | match.rev = BCMA_ANY_REV; | |
257 | ||
258 | /* Scan for chip common core */ | |
259 | err = bcma_bus_scan_early(bus, &match, core_cc); | |
260 | if (err) { | |
3d9d8af3 | 261 | bcma_err(bus, "Failed to scan for common core: %d\n", err); |
517f43e5 HM |
262 | return -1; |
263 | } | |
264 | ||
265 | match.manuf = BCMA_MANUF_MIPS; | |
266 | match.id = BCMA_CORE_MIPS_74K; | |
267 | match.class = BCMA_CL_SIM; | |
268 | match.rev = BCMA_ANY_REV; | |
269 | ||
270 | /* Scan for mips core */ | |
271 | err = bcma_bus_scan_early(bus, &match, core_mips); | |
272 | if (err) { | |
3d9d8af3 | 273 | bcma_err(bus, "Failed to scan for mips core: %d\n", err); |
517f43e5 HM |
274 | return -1; |
275 | } | |
276 | ||
49655bb8 | 277 | /* Early init CC core */ |
6d5cfc9f | 278 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
517f43e5 HM |
279 | if (core) { |
280 | bus->drv_cc.core = core; | |
49655bb8 | 281 | bcma_core_chipcommon_early_init(&bus->drv_cc); |
517f43e5 HM |
282 | } |
283 | ||
49655bb8 | 284 | /* Early init MIPS core */ |
21e0534a HM |
285 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); |
286 | if (core) { | |
287 | bus->drv_mips.core = core; | |
49655bb8 | 288 | bcma_core_mips_early_init(&bus->drv_mips); |
21e0534a HM |
289 | } |
290 | ||
3d9d8af3 | 291 | bcma_info(bus, "Early bus registered\n"); |
517f43e5 HM |
292 | |
293 | return 0; | |
294 | } | |
295 | ||
775ab521 | 296 | #ifdef CONFIG_PM |
685a4ef0 LT |
297 | int bcma_bus_suspend(struct bcma_bus *bus) |
298 | { | |
7d5869e7 LT |
299 | struct bcma_device *core; |
300 | ||
301 | list_for_each_entry(core, &bus->cores, list) { | |
302 | struct device_driver *drv = core->dev.driver; | |
303 | if (drv) { | |
304 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
305 | if (adrv->suspend) | |
306 | adrv->suspend(core); | |
307 | } | |
308 | } | |
685a4ef0 LT |
309 | return 0; |
310 | } | |
311 | ||
775ab521 RM |
312 | int bcma_bus_resume(struct bcma_bus *bus) |
313 | { | |
314 | struct bcma_device *core; | |
315 | ||
316 | /* Init CC core */ | |
6d5cfc9f | 317 | if (bus->drv_cc.core) { |
775ab521 RM |
318 | bus->drv_cc.setup_done = false; |
319 | bcma_core_chipcommon_init(&bus->drv_cc); | |
320 | } | |
321 | ||
7d5869e7 LT |
322 | list_for_each_entry(core, &bus->cores, list) { |
323 | struct device_driver *drv = core->dev.driver; | |
324 | if (drv) { | |
325 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
326 | if (adrv->resume) | |
327 | adrv->resume(core); | |
328 | } | |
329 | } | |
330 | ||
775ab521 RM |
331 | return 0; |
332 | } | |
333 | #endif | |
334 | ||
8369ae33 RM |
335 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
336 | { | |
337 | drv->drv.name = drv->name; | |
338 | drv->drv.bus = &bcma_bus_type; | |
339 | drv->drv.owner = owner; | |
340 | ||
341 | return driver_register(&drv->drv); | |
342 | } | |
343 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
344 | ||
345 | void bcma_driver_unregister(struct bcma_driver *drv) | |
346 | { | |
347 | driver_unregister(&drv->drv); | |
348 | } | |
349 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
350 | ||
351 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
352 | { | |
353 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
354 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
355 | const struct bcma_device_id *cid = &core->id; | |
356 | const struct bcma_device_id *did; | |
357 | ||
358 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
359 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
360 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
361 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
362 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
363 | return 1; | |
364 | } | |
365 | return 0; | |
366 | } | |
367 | ||
368 | static int bcma_device_probe(struct device *dev) | |
369 | { | |
370 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
371 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
372 | drv); | |
373 | int err = 0; | |
374 | ||
375 | if (adrv->probe) | |
376 | err = adrv->probe(core); | |
377 | ||
378 | return err; | |
379 | } | |
380 | ||
381 | static int bcma_device_remove(struct device *dev) | |
382 | { | |
383 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
384 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
385 | drv); | |
386 | ||
387 | if (adrv->remove) | |
388 | adrv->remove(core); | |
389 | ||
390 | return 0; | |
391 | } | |
392 | ||
886b66ef DW |
393 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
394 | { | |
395 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
396 | ||
397 | return add_uevent_var(env, | |
398 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
399 | core->id.manuf, core->id.id, | |
400 | core->id.rev, core->id.class); | |
401 | } | |
402 | ||
8369ae33 RM |
403 | static int __init bcma_modinit(void) |
404 | { | |
405 | int err; | |
406 | ||
407 | err = bus_register(&bcma_bus_type); | |
408 | if (err) | |
409 | return err; | |
410 | ||
411 | #ifdef CONFIG_BCMA_HOST_PCI | |
412 | err = bcma_host_pci_init(); | |
413 | if (err) { | |
414 | pr_err("PCI host initialization failed\n"); | |
415 | err = 0; | |
416 | } | |
417 | #endif | |
418 | ||
419 | return err; | |
420 | } | |
421 | fs_initcall(bcma_modinit); | |
422 | ||
423 | static void __exit bcma_modexit(void) | |
424 | { | |
425 | #ifdef CONFIG_BCMA_HOST_PCI | |
426 | bcma_host_pci_exit(); | |
427 | #endif | |
428 | bus_unregister(&bcma_bus_type); | |
429 | } | |
430 | module_exit(bcma_modexit) |