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> |
8369ae33 | 10 | #include <linux/bcma/bcma.h> |
eef72699 | 11 | #include <linux/slab.h> |
8369ae33 RM |
12 | |
13 | MODULE_DESCRIPTION("Broadcom's specific AMBA driver"); | |
14 | MODULE_LICENSE("GPL"); | |
15 | ||
8f9ada4f HM |
16 | /* contains the number the next bus should get. */ |
17 | static unsigned int bcma_bus_next_num = 0; | |
18 | ||
19 | /* bcma_buses_mutex locks the bcma_bus_next_num */ | |
20 | static DEFINE_MUTEX(bcma_buses_mutex); | |
21 | ||
8369ae33 RM |
22 | static int bcma_bus_match(struct device *dev, struct device_driver *drv); |
23 | static int bcma_device_probe(struct device *dev); | |
24 | static int bcma_device_remove(struct device *dev); | |
886b66ef | 25 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env); |
8369ae33 RM |
26 | |
27 | static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf) | |
28 | { | |
29 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
30 | return sprintf(buf, "0x%03X\n", core->id.manuf); | |
31 | } | |
32 | static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf) | |
33 | { | |
34 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
35 | return sprintf(buf, "0x%03X\n", core->id.id); | |
36 | } | |
37 | static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf) | |
38 | { | |
39 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
40 | return sprintf(buf, "0x%02X\n", core->id.rev); | |
41 | } | |
42 | static ssize_t class_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%X\n", core->id.class); | |
46 | } | |
47 | static struct device_attribute bcma_device_attrs[] = { | |
48 | __ATTR_RO(manuf), | |
49 | __ATTR_RO(id), | |
50 | __ATTR_RO(rev), | |
51 | __ATTR_RO(class), | |
52 | __ATTR_NULL, | |
53 | }; | |
54 | ||
55 | static struct bus_type bcma_bus_type = { | |
56 | .name = "bcma", | |
57 | .match = bcma_bus_match, | |
58 | .probe = bcma_device_probe, | |
59 | .remove = bcma_device_remove, | |
886b66ef | 60 | .uevent = bcma_device_uevent, |
8369ae33 RM |
61 | .dev_attrs = bcma_device_attrs, |
62 | }; | |
63 | ||
1c9351cf | 64 | struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid) |
8369ae33 RM |
65 | { |
66 | struct bcma_device *core; | |
67 | ||
68 | list_for_each_entry(core, &bus->cores, list) { | |
69 | if (core->id.id == coreid) | |
70 | return core; | |
71 | } | |
72 | return NULL; | |
73 | } | |
1c9351cf | 74 | EXPORT_SYMBOL_GPL(bcma_find_core); |
8369ae33 RM |
75 | |
76 | static void bcma_release_core_dev(struct device *dev) | |
77 | { | |
78 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
ecd177c2 HM |
79 | if (core->io_addr) |
80 | iounmap(core->io_addr); | |
81 | if (core->io_wrap) | |
82 | iounmap(core->io_wrap); | |
8369ae33 RM |
83 | kfree(core); |
84 | } | |
85 | ||
86 | static int bcma_register_cores(struct bcma_bus *bus) | |
87 | { | |
88 | struct bcma_device *core; | |
89 | int err, dev_id = 0; | |
90 | ||
91 | list_for_each_entry(core, &bus->cores, list) { | |
92 | /* We support that cores ourself */ | |
93 | switch (core->id.id) { | |
94 | case BCMA_CORE_CHIPCOMMON: | |
95 | case BCMA_CORE_PCI: | |
96 | case BCMA_CORE_PCIE: | |
21e0534a | 97 | case BCMA_CORE_MIPS_74K: |
8369ae33 RM |
98 | continue; |
99 | } | |
100 | ||
101 | core->dev.release = bcma_release_core_dev; | |
102 | core->dev.bus = &bcma_bus_type; | |
8f9ada4f | 103 | dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id); |
8369ae33 RM |
104 | |
105 | switch (bus->hosttype) { | |
106 | case BCMA_HOSTTYPE_PCI: | |
107 | core->dev.parent = &bus->host_pci->dev; | |
1bdcd095 RM |
108 | core->dma_dev = &bus->host_pci->dev; |
109 | core->irq = bus->host_pci->irq; | |
8369ae33 | 110 | break; |
ecd177c2 HM |
111 | case BCMA_HOSTTYPE_SOC: |
112 | core->dev.dma_mask = &core->dev.coherent_dma_mask; | |
113 | core->dma_dev = &core->dev; | |
114 | break; | |
8369ae33 RM |
115 | case BCMA_HOSTTYPE_SDIO: |
116 | break; | |
117 | } | |
118 | ||
119 | err = device_register(&core->dev); | |
120 | if (err) { | |
121 | pr_err("Could not register dev for core 0x%03X\n", | |
122 | core->id.id); | |
123 | continue; | |
124 | } | |
125 | core->dev_registered = true; | |
126 | dev_id++; | |
127 | } | |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
132 | static void bcma_unregister_cores(struct bcma_bus *bus) | |
133 | { | |
134 | struct bcma_device *core; | |
135 | ||
136 | list_for_each_entry(core, &bus->cores, list) { | |
137 | if (core->dev_registered) | |
138 | device_unregister(&core->dev); | |
139 | } | |
140 | } | |
141 | ||
d1a7a8e1 | 142 | int __devinit bcma_bus_register(struct bcma_bus *bus) |
8369ae33 RM |
143 | { |
144 | int err; | |
145 | struct bcma_device *core; | |
146 | ||
8f9ada4f HM |
147 | mutex_lock(&bcma_buses_mutex); |
148 | bus->num = bcma_bus_next_num++; | |
149 | mutex_unlock(&bcma_buses_mutex); | |
150 | ||
8369ae33 RM |
151 | /* Scan for devices (cores) */ |
152 | err = bcma_bus_scan(bus); | |
153 | if (err) { | |
154 | pr_err("Failed to scan: %d\n", err); | |
155 | return -1; | |
156 | } | |
157 | ||
158 | /* Init CC core */ | |
159 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
160 | if (core) { | |
161 | bus->drv_cc.core = core; | |
162 | bcma_core_chipcommon_init(&bus->drv_cc); | |
163 | } | |
164 | ||
21e0534a HM |
165 | /* Init MIPS core */ |
166 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
167 | if (core) { | |
168 | bus->drv_mips.core = core; | |
169 | bcma_core_mips_init(&bus->drv_mips); | |
170 | } | |
171 | ||
8369ae33 RM |
172 | /* Init PCIE core */ |
173 | core = bcma_find_core(bus, BCMA_CORE_PCIE); | |
174 | if (core) { | |
175 | bus->drv_pci.core = core; | |
176 | bcma_core_pci_init(&bus->drv_pci); | |
177 | } | |
178 | ||
27f18dc2 RM |
179 | /* Try to get SPROM */ |
180 | err = bcma_sprom_get(bus); | |
534e7a45 HM |
181 | if (err == -ENOENT) { |
182 | pr_err("No SPROM available\n"); | |
2e6b4119 | 183 | } else if (err) |
27f18dc2 | 184 | pr_err("Failed to get SPROM: %d\n", err); |
27f18dc2 | 185 | |
8369ae33 RM |
186 | /* Register found cores */ |
187 | bcma_register_cores(bus); | |
188 | ||
189 | pr_info("Bus registered\n"); | |
190 | ||
191 | return 0; | |
192 | } | |
8369ae33 RM |
193 | |
194 | void bcma_bus_unregister(struct bcma_bus *bus) | |
195 | { | |
196 | bcma_unregister_cores(bus); | |
197 | } | |
8369ae33 | 198 | |
517f43e5 HM |
199 | int __init bcma_bus_early_register(struct bcma_bus *bus, |
200 | struct bcma_device *core_cc, | |
201 | struct bcma_device *core_mips) | |
202 | { | |
203 | int err; | |
204 | struct bcma_device *core; | |
205 | struct bcma_device_id match; | |
206 | ||
207 | bcma_init_bus(bus); | |
208 | ||
209 | match.manuf = BCMA_MANUF_BCM; | |
210 | match.id = BCMA_CORE_CHIPCOMMON; | |
211 | match.class = BCMA_CL_SIM; | |
212 | match.rev = BCMA_ANY_REV; | |
213 | ||
214 | /* Scan for chip common core */ | |
215 | err = bcma_bus_scan_early(bus, &match, core_cc); | |
216 | if (err) { | |
217 | pr_err("Failed to scan for common core: %d\n", err); | |
218 | return -1; | |
219 | } | |
220 | ||
221 | match.manuf = BCMA_MANUF_MIPS; | |
222 | match.id = BCMA_CORE_MIPS_74K; | |
223 | match.class = BCMA_CL_SIM; | |
224 | match.rev = BCMA_ANY_REV; | |
225 | ||
226 | /* Scan for mips core */ | |
227 | err = bcma_bus_scan_early(bus, &match, core_mips); | |
228 | if (err) { | |
229 | pr_err("Failed to scan for mips core: %d\n", err); | |
230 | return -1; | |
231 | } | |
232 | ||
233 | /* Init CC core */ | |
234 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
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 | ||
517f43e5 HM |
247 | pr_info("Early bus registered\n"); |
248 | ||
249 | return 0; | |
250 | } | |
251 | ||
775ab521 | 252 | #ifdef CONFIG_PM |
685a4ef0 LT |
253 | int bcma_bus_suspend(struct bcma_bus *bus) |
254 | { | |
7d5869e7 LT |
255 | struct bcma_device *core; |
256 | ||
257 | list_for_each_entry(core, &bus->cores, list) { | |
258 | struct device_driver *drv = core->dev.driver; | |
259 | if (drv) { | |
260 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
261 | if (adrv->suspend) | |
262 | adrv->suspend(core); | |
263 | } | |
264 | } | |
685a4ef0 LT |
265 | return 0; |
266 | } | |
267 | ||
775ab521 RM |
268 | int bcma_bus_resume(struct bcma_bus *bus) |
269 | { | |
270 | struct bcma_device *core; | |
271 | ||
272 | /* Init CC core */ | |
273 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
274 | if (core) { | |
275 | bus->drv_cc.setup_done = false; | |
276 | bcma_core_chipcommon_init(&bus->drv_cc); | |
277 | } | |
278 | ||
7d5869e7 LT |
279 | list_for_each_entry(core, &bus->cores, list) { |
280 | struct device_driver *drv = core->dev.driver; | |
281 | if (drv) { | |
282 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
283 | if (adrv->resume) | |
284 | adrv->resume(core); | |
285 | } | |
286 | } | |
287 | ||
775ab521 RM |
288 | return 0; |
289 | } | |
290 | #endif | |
291 | ||
8369ae33 RM |
292 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
293 | { | |
294 | drv->drv.name = drv->name; | |
295 | drv->drv.bus = &bcma_bus_type; | |
296 | drv->drv.owner = owner; | |
297 | ||
298 | return driver_register(&drv->drv); | |
299 | } | |
300 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
301 | ||
302 | void bcma_driver_unregister(struct bcma_driver *drv) | |
303 | { | |
304 | driver_unregister(&drv->drv); | |
305 | } | |
306 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
307 | ||
308 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
309 | { | |
310 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
311 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
312 | const struct bcma_device_id *cid = &core->id; | |
313 | const struct bcma_device_id *did; | |
314 | ||
315 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
316 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
317 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
318 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
319 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
320 | return 1; | |
321 | } | |
322 | return 0; | |
323 | } | |
324 | ||
325 | static int bcma_device_probe(struct device *dev) | |
326 | { | |
327 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
328 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
329 | drv); | |
330 | int err = 0; | |
331 | ||
332 | if (adrv->probe) | |
333 | err = adrv->probe(core); | |
334 | ||
335 | return err; | |
336 | } | |
337 | ||
338 | static int bcma_device_remove(struct device *dev) | |
339 | { | |
340 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
341 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
342 | drv); | |
343 | ||
344 | if (adrv->remove) | |
345 | adrv->remove(core); | |
346 | ||
347 | return 0; | |
348 | } | |
349 | ||
886b66ef DW |
350 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
351 | { | |
352 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
353 | ||
354 | return add_uevent_var(env, | |
355 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
356 | core->id.manuf, core->id.id, | |
357 | core->id.rev, core->id.class); | |
358 | } | |
359 | ||
8369ae33 RM |
360 | static int __init bcma_modinit(void) |
361 | { | |
362 | int err; | |
363 | ||
364 | err = bus_register(&bcma_bus_type); | |
365 | if (err) | |
366 | return err; | |
367 | ||
368 | #ifdef CONFIG_BCMA_HOST_PCI | |
369 | err = bcma_host_pci_init(); | |
370 | if (err) { | |
371 | pr_err("PCI host initialization failed\n"); | |
372 | err = 0; | |
373 | } | |
374 | #endif | |
375 | ||
376 | return err; | |
377 | } | |
378 | fs_initcall(bcma_modinit); | |
379 | ||
380 | static void __exit bcma_modexit(void) | |
381 | { | |
382 | #ifdef CONFIG_BCMA_HOST_PCI | |
383 | bcma_host_pci_exit(); | |
384 | #endif | |
385 | bus_unregister(&bcma_bus_type); | |
386 | } | |
387 | module_exit(bcma_modexit) |