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8#include "bcma_private.h"
9#include <linux/module.h>
10#include <linux/bcma/bcma.h>
11#include <linux/slab.h>
12
13MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
14MODULE_LICENSE("GPL");
15
16
17static unsigned int bcma_bus_next_num = 0;
18
19
20static DEFINE_MUTEX(bcma_buses_mutex);
21
22static int bcma_bus_match(struct device *dev, struct device_driver *drv);
23static int bcma_device_probe(struct device *dev);
24static int bcma_device_remove(struct device *dev);
25static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
26
27static 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}
32static 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}
37static 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}
42static 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}
47static 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
55static struct bus_type bcma_bus_type = {
56 .name = "bcma",
57 .match = bcma_bus_match,
58 .probe = bcma_device_probe,
59 .remove = bcma_device_remove,
60 .uevent = bcma_device_uevent,
61 .dev_attrs = bcma_device_attrs,
62};
63
64struct 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}
74EXPORT_SYMBOL_GPL(bcma_find_core);
75
76static void bcma_release_core_dev(struct device *dev)
77{
78 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
79 if (core->io_addr)
80 iounmap(core->io_addr);
81 if (core->io_wrap)
82 iounmap(core->io_wrap);
83 kfree(core);
84}
85
86static 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
93 switch (core->id.id) {
94 case BCMA_CORE_CHIPCOMMON:
95 case BCMA_CORE_PCI:
96 case BCMA_CORE_PCIE:
97 case BCMA_CORE_MIPS_74K:
98 continue;
99 }
100
101 core->dev.release = bcma_release_core_dev;
102 core->dev.bus = &bcma_bus_type;
103 dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
104
105 switch (bus->hosttype) {
106 case BCMA_HOSTTYPE_PCI:
107 core->dev.parent = &bus->host_pci->dev;
108 core->dma_dev = &bus->host_pci->dev;
109 core->irq = bus->host_pci->irq;
110 break;
111 case BCMA_HOSTTYPE_SOC:
112 core->dev.dma_mask = &core->dev.coherent_dma_mask;
113 core->dma_dev = &core->dev;
114 break;
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
132static 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
142int __devinit bcma_bus_register(struct bcma_bus *bus)
143{
144 int err;
145 struct bcma_device *core;
146
147 mutex_lock(&bcma_buses_mutex);
148 bus->num = bcma_bus_next_num++;
149 mutex_unlock(&bcma_buses_mutex);
150
151
152 err = bcma_bus_scan(bus);
153 if (err) {
154 pr_err("Failed to scan: %d\n", err);
155 return -1;
156 }
157
158
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
165
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
172
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
179
180 err = bcma_sprom_get(bus);
181 if (err == -ENOENT) {
182 pr_err("No SPROM available\n");
183 } else if (err)
184 pr_err("Failed to get SPROM: %d\n", err);
185
186
187 bcma_register_cores(bus);
188
189 pr_info("Bus registered\n");
190
191 return 0;
192}
193
194void bcma_bus_unregister(struct bcma_bus *bus)
195{
196 bcma_unregister_cores(bus);
197}
198
199int __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
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
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
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
240
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
247 pr_info("Early bus registered\n");
248
249 return 0;
250}
251
252#ifdef CONFIG_PM
253int bcma_bus_suspend(struct bcma_bus *bus)
254{
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 }
265 return 0;
266}
267
268int bcma_bus_resume(struct bcma_bus *bus)
269{
270 struct bcma_device *core;
271
272
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
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
288 return 0;
289}
290#endif
291
292int __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}
300EXPORT_SYMBOL_GPL(__bcma_driver_register);
301
302void bcma_driver_unregister(struct bcma_driver *drv)
303{
304 driver_unregister(&drv->drv);
305}
306EXPORT_SYMBOL_GPL(bcma_driver_unregister);
307
308static 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
325static 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
338static 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
350static 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
360static 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}
378fs_initcall(bcma_modinit);
379
380static 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}
387module_exit(bcma_modexit)
388
