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 | ||
64 | static struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid) | |
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 | } | |
74 | ||
75 | static void bcma_release_core_dev(struct device *dev) | |
76 | { | |
77 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
ecd177c2 HM |
78 | if (core->io_addr) |
79 | iounmap(core->io_addr); | |
80 | if (core->io_wrap) | |
81 | iounmap(core->io_wrap); | |
8369ae33 RM |
82 | kfree(core); |
83 | } | |
84 | ||
85 | static int bcma_register_cores(struct bcma_bus *bus) | |
86 | { | |
87 | struct bcma_device *core; | |
88 | int err, dev_id = 0; | |
89 | ||
90 | list_for_each_entry(core, &bus->cores, list) { | |
91 | /* We support that cores ourself */ | |
92 | switch (core->id.id) { | |
93 | case BCMA_CORE_CHIPCOMMON: | |
94 | case BCMA_CORE_PCI: | |
95 | case BCMA_CORE_PCIE: | |
21e0534a | 96 | case BCMA_CORE_MIPS_74K: |
8369ae33 RM |
97 | continue; |
98 | } | |
99 | ||
100 | core->dev.release = bcma_release_core_dev; | |
101 | core->dev.bus = &bcma_bus_type; | |
8f9ada4f | 102 | dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id); |
8369ae33 RM |
103 | |
104 | switch (bus->hosttype) { | |
105 | case BCMA_HOSTTYPE_PCI: | |
106 | core->dev.parent = &bus->host_pci->dev; | |
1bdcd095 RM |
107 | core->dma_dev = &bus->host_pci->dev; |
108 | core->irq = bus->host_pci->irq; | |
8369ae33 | 109 | break; |
ecd177c2 HM |
110 | case BCMA_HOSTTYPE_SOC: |
111 | core->dev.dma_mask = &core->dev.coherent_dma_mask; | |
112 | core->dma_dev = &core->dev; | |
113 | break; | |
8369ae33 RM |
114 | case BCMA_HOSTTYPE_SDIO: |
115 | break; | |
116 | } | |
117 | ||
118 | err = device_register(&core->dev); | |
119 | if (err) { | |
120 | pr_err("Could not register dev for core 0x%03X\n", | |
121 | core->id.id); | |
122 | continue; | |
123 | } | |
124 | core->dev_registered = true; | |
125 | dev_id++; | |
126 | } | |
127 | ||
128 | return 0; | |
129 | } | |
130 | ||
131 | static void bcma_unregister_cores(struct bcma_bus *bus) | |
132 | { | |
133 | struct bcma_device *core; | |
134 | ||
135 | list_for_each_entry(core, &bus->cores, list) { | |
136 | if (core->dev_registered) | |
137 | device_unregister(&core->dev); | |
138 | } | |
139 | } | |
140 | ||
d1a7a8e1 | 141 | int __devinit bcma_bus_register(struct bcma_bus *bus) |
8369ae33 RM |
142 | { |
143 | int err; | |
144 | struct bcma_device *core; | |
145 | ||
8f9ada4f HM |
146 | mutex_lock(&bcma_buses_mutex); |
147 | bus->num = bcma_bus_next_num++; | |
148 | mutex_unlock(&bcma_buses_mutex); | |
149 | ||
8369ae33 RM |
150 | /* Scan for devices (cores) */ |
151 | err = bcma_bus_scan(bus); | |
152 | if (err) { | |
153 | pr_err("Failed to scan: %d\n", err); | |
154 | return -1; | |
155 | } | |
156 | ||
157 | /* Init CC core */ | |
158 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
159 | if (core) { | |
160 | bus->drv_cc.core = core; | |
161 | bcma_core_chipcommon_init(&bus->drv_cc); | |
162 | } | |
163 | ||
21e0534a HM |
164 | /* Init MIPS core */ |
165 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
166 | if (core) { | |
167 | bus->drv_mips.core = core; | |
168 | bcma_core_mips_init(&bus->drv_mips); | |
169 | } | |
170 | ||
8369ae33 RM |
171 | /* Init PCIE core */ |
172 | core = bcma_find_core(bus, BCMA_CORE_PCIE); | |
173 | if (core) { | |
174 | bus->drv_pci.core = core; | |
175 | bcma_core_pci_init(&bus->drv_pci); | |
176 | } | |
177 | ||
27f18dc2 RM |
178 | /* Try to get SPROM */ |
179 | err = bcma_sprom_get(bus); | |
534e7a45 HM |
180 | if (err == -ENOENT) { |
181 | pr_err("No SPROM available\n"); | |
2e6b4119 | 182 | } else if (err) |
27f18dc2 | 183 | pr_err("Failed to get SPROM: %d\n", err); |
27f18dc2 | 184 | |
8369ae33 RM |
185 | /* Register found cores */ |
186 | bcma_register_cores(bus); | |
187 | ||
188 | pr_info("Bus registered\n"); | |
189 | ||
190 | return 0; | |
191 | } | |
8369ae33 RM |
192 | |
193 | void bcma_bus_unregister(struct bcma_bus *bus) | |
194 | { | |
195 | bcma_unregister_cores(bus); | |
196 | } | |
8369ae33 | 197 | |
517f43e5 HM |
198 | int __init bcma_bus_early_register(struct bcma_bus *bus, |
199 | struct bcma_device *core_cc, | |
200 | struct bcma_device *core_mips) | |
201 | { | |
202 | int err; | |
203 | struct bcma_device *core; | |
204 | struct bcma_device_id match; | |
205 | ||
206 | bcma_init_bus(bus); | |
207 | ||
208 | match.manuf = BCMA_MANUF_BCM; | |
209 | match.id = BCMA_CORE_CHIPCOMMON; | |
210 | match.class = BCMA_CL_SIM; | |
211 | match.rev = BCMA_ANY_REV; | |
212 | ||
213 | /* Scan for chip common core */ | |
214 | err = bcma_bus_scan_early(bus, &match, core_cc); | |
215 | if (err) { | |
216 | pr_err("Failed to scan for common core: %d\n", err); | |
217 | return -1; | |
218 | } | |
219 | ||
220 | match.manuf = BCMA_MANUF_MIPS; | |
221 | match.id = BCMA_CORE_MIPS_74K; | |
222 | match.class = BCMA_CL_SIM; | |
223 | match.rev = BCMA_ANY_REV; | |
224 | ||
225 | /* Scan for mips core */ | |
226 | err = bcma_bus_scan_early(bus, &match, core_mips); | |
227 | if (err) { | |
228 | pr_err("Failed to scan for mips core: %d\n", err); | |
229 | return -1; | |
230 | } | |
231 | ||
232 | /* Init CC core */ | |
233 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
234 | if (core) { | |
235 | bus->drv_cc.core = core; | |
236 | bcma_core_chipcommon_init(&bus->drv_cc); | |
237 | } | |
238 | ||
21e0534a HM |
239 | /* Init MIPS core */ |
240 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
241 | if (core) { | |
242 | bus->drv_mips.core = core; | |
243 | bcma_core_mips_init(&bus->drv_mips); | |
244 | } | |
245 | ||
517f43e5 HM |
246 | pr_info("Early bus registered\n"); |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
775ab521 | 251 | #ifdef CONFIG_PM |
685a4ef0 LT |
252 | int bcma_bus_suspend(struct bcma_bus *bus) |
253 | { | |
7d5869e7 LT |
254 | struct bcma_device *core; |
255 | ||
256 | list_for_each_entry(core, &bus->cores, list) { | |
257 | struct device_driver *drv = core->dev.driver; | |
258 | if (drv) { | |
259 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
260 | if (adrv->suspend) | |
261 | adrv->suspend(core); | |
262 | } | |
263 | } | |
685a4ef0 LT |
264 | return 0; |
265 | } | |
266 | ||
775ab521 RM |
267 | int bcma_bus_resume(struct bcma_bus *bus) |
268 | { | |
269 | struct bcma_device *core; | |
270 | ||
271 | /* Init CC core */ | |
272 | core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON); | |
273 | if (core) { | |
274 | bus->drv_cc.setup_done = false; | |
275 | bcma_core_chipcommon_init(&bus->drv_cc); | |
276 | } | |
277 | ||
7d5869e7 LT |
278 | list_for_each_entry(core, &bus->cores, list) { |
279 | struct device_driver *drv = core->dev.driver; | |
280 | if (drv) { | |
281 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
282 | if (adrv->resume) | |
283 | adrv->resume(core); | |
284 | } | |
285 | } | |
286 | ||
775ab521 RM |
287 | return 0; |
288 | } | |
289 | #endif | |
290 | ||
8369ae33 RM |
291 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
292 | { | |
293 | drv->drv.name = drv->name; | |
294 | drv->drv.bus = &bcma_bus_type; | |
295 | drv->drv.owner = owner; | |
296 | ||
297 | return driver_register(&drv->drv); | |
298 | } | |
299 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
300 | ||
301 | void bcma_driver_unregister(struct bcma_driver *drv) | |
302 | { | |
303 | driver_unregister(&drv->drv); | |
304 | } | |
305 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
306 | ||
307 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
308 | { | |
309 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
310 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
311 | const struct bcma_device_id *cid = &core->id; | |
312 | const struct bcma_device_id *did; | |
313 | ||
314 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
315 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
316 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
317 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
318 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
319 | return 1; | |
320 | } | |
321 | return 0; | |
322 | } | |
323 | ||
324 | static int bcma_device_probe(struct device *dev) | |
325 | { | |
326 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
327 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
328 | drv); | |
329 | int err = 0; | |
330 | ||
331 | if (adrv->probe) | |
332 | err = adrv->probe(core); | |
333 | ||
334 | return err; | |
335 | } | |
336 | ||
337 | static int bcma_device_remove(struct device *dev) | |
338 | { | |
339 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
340 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
341 | drv); | |
342 | ||
343 | if (adrv->remove) | |
344 | adrv->remove(core); | |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
886b66ef DW |
349 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
350 | { | |
351 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
352 | ||
353 | return add_uevent_var(env, | |
354 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
355 | core->id.manuf, core->id.id, | |
356 | core->id.rev, core->id.class); | |
357 | } | |
358 | ||
8369ae33 RM |
359 | static int __init bcma_modinit(void) |
360 | { | |
361 | int err; | |
362 | ||
363 | err = bus_register(&bcma_bus_type); | |
364 | if (err) | |
365 | return err; | |
366 | ||
367 | #ifdef CONFIG_BCMA_HOST_PCI | |
368 | err = bcma_host_pci_init(); | |
369 | if (err) { | |
370 | pr_err("PCI host initialization failed\n"); | |
371 | err = 0; | |
372 | } | |
373 | #endif | |
374 | ||
375 | return err; | |
376 | } | |
377 | fs_initcall(bcma_modinit); | |
378 | ||
379 | static void __exit bcma_modexit(void) | |
380 | { | |
381 | #ifdef CONFIG_BCMA_HOST_PCI | |
382 | bcma_host_pci_exit(); | |
383 | #endif | |
384 | bus_unregister(&bcma_bus_type); | |
385 | } | |
386 | module_exit(bcma_modexit) |