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8#include "bcma_private.h"
9#include <linux/module.h>
10#include <linux/platform_device.h>
11#include <linux/bcma/bcma.h>
12#include <linux/slab.h>
13
14MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
15MODULE_LICENSE("GPL");
16
17
18static unsigned int bcma_bus_next_num = 0;
19
20
21static DEFINE_MUTEX(bcma_buses_mutex);
22
23static int bcma_bus_match(struct device *dev, struct device_driver *drv);
24static int bcma_device_probe(struct device *dev);
25static int bcma_device_remove(struct device *dev);
26static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
27
28static 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}
33static 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}
38static 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}
43static 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}
48static 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
56static struct bus_type bcma_bus_type = {
57 .name = "bcma",
58 .match = bcma_bus_match,
59 .probe = bcma_device_probe,
60 .remove = bcma_device_remove,
61 .uevent = bcma_device_uevent,
62 .dev_attrs = bcma_device_attrs,
63};
64
65static 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
72struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
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}
82EXPORT_SYMBOL_GPL(bcma_find_core);
83
84static void bcma_release_core_dev(struct device *dev)
85{
86 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
87 if (core->io_addr)
88 iounmap(core->io_addr);
89 if (core->io_wrap)
90 iounmap(core->io_wrap);
91 kfree(core);
92}
93
94static 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
101 switch (core->id.id) {
102 case BCMA_CORE_4706_CHIPCOMMON:
103 case BCMA_CORE_CHIPCOMMON:
104 case BCMA_CORE_PCI:
105 case BCMA_CORE_PCIE:
106 case BCMA_CORE_MIPS_74K:
107 case BCMA_CORE_4706_MAC_GBIT_COMMON:
108 continue;
109 }
110
111 core->dev.release = bcma_release_core_dev;
112 core->dev.bus = &bcma_bus_type;
113 dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
114
115 switch (bus->hosttype) {
116 case BCMA_HOSTTYPE_PCI:
117 core->dev.parent = &bus->host_pci->dev;
118 core->dma_dev = &bus->host_pci->dev;
119 core->irq = bus->host_pci->irq;
120 break;
121 case BCMA_HOSTTYPE_SOC:
122 core->dev.dma_mask = &core->dev.coherent_dma_mask;
123 core->dma_dev = &core->dev;
124 break;
125 case BCMA_HOSTTYPE_SDIO:
126 break;
127 }
128
129 err = device_register(&core->dev);
130 if (err) {
131 bcma_err(bus,
132 "Could not register dev for core 0x%03X\n",
133 core->id.id);
134 continue;
135 }
136 core->dev_registered = true;
137 dev_id++;
138 }
139
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
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
156 return 0;
157}
158
159static void bcma_unregister_cores(struct bcma_bus *bus)
160{
161 struct bcma_device *core, *tmp;
162
163 list_for_each_entry_safe(core, tmp, &bus->cores, list) {
164 list_del(&core->list);
165 if (core->dev_registered)
166 device_unregister(&core->dev);
167 }
168}
169
170int __devinit bcma_bus_register(struct bcma_bus *bus)
171{
172 int err;
173 struct bcma_device *core;
174
175 mutex_lock(&bcma_buses_mutex);
176 bus->num = bcma_bus_next_num++;
177 mutex_unlock(&bcma_buses_mutex);
178
179
180 err = bcma_bus_scan(bus);
181 if (err) {
182 bcma_err(bus, "Failed to scan: %d\n", err);
183 return -1;
184 }
185
186
187 core = bcma_find_core(bus, bcma_cc_core_id(bus));
188 if (core) {
189 bus->drv_cc.core = core;
190 bcma_core_chipcommon_init(&bus->drv_cc);
191 }
192
193
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
200
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
207
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
214
215 err = bcma_sprom_get(bus);
216 if (err == -ENOENT) {
217 bcma_err(bus, "No SPROM available\n");
218 } else if (err)
219 bcma_err(bus, "Failed to get SPROM: %d\n", err);
220
221
222 bcma_register_cores(bus);
223
224 bcma_info(bus, "Bus registered\n");
225
226 return 0;
227}
228
229void bcma_bus_unregister(struct bcma_bus *bus)
230{
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
237 bcma_unregister_cores(bus);
238
239 kfree(cores[2]);
240 kfree(cores[1]);
241 kfree(cores[0]);
242}
243
244int __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;
255 match.id = bcma_cc_core_id(bus);
256 match.class = BCMA_CL_SIM;
257 match.rev = BCMA_ANY_REV;
258
259
260 err = bcma_bus_scan_early(bus, &match, core_cc);
261 if (err) {
262 bcma_err(bus, "Failed to scan for common core: %d\n", err);
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
272 err = bcma_bus_scan_early(bus, &match, core_mips);
273 if (err) {
274 bcma_err(bus, "Failed to scan for mips core: %d\n", err);
275 return -1;
276 }
277
278
279 core = bcma_find_core(bus, bcma_cc_core_id(bus));
280 if (core) {
281 bus->drv_cc.core = core;
282 bcma_core_chipcommon_init(&bus->drv_cc);
283 }
284
285
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
292 bcma_info(bus, "Early bus registered\n");
293
294 return 0;
295}
296
297#ifdef CONFIG_PM
298int bcma_bus_suspend(struct bcma_bus *bus)
299{
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 }
310 return 0;
311}
312
313int bcma_bus_resume(struct bcma_bus *bus)
314{
315 struct bcma_device *core;
316
317
318 if (bus->drv_cc.core) {
319 bus->drv_cc.setup_done = false;
320 bcma_core_chipcommon_init(&bus->drv_cc);
321 }
322
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
332 return 0;
333}
334#endif
335
336int __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}
344EXPORT_SYMBOL_GPL(__bcma_driver_register);
345
346void bcma_driver_unregister(struct bcma_driver *drv)
347{
348 driver_unregister(&drv->drv);
349}
350EXPORT_SYMBOL_GPL(bcma_driver_unregister);
351
352static 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
369static 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
382static 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
394static 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
404static 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}
422fs_initcall(bcma_modinit);
423
424static 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}
431module_exit(bcma_modexit)
432
