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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
84struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
85 u8 unit)
86{
87 struct bcma_device *core;
88
89 list_for_each_entry(core, &bus->cores, list) {
90 if (core->id.id == coreid && core->core_unit == unit)
91 return core;
92 }
93 return NULL;
94}
95
96static void bcma_release_core_dev(struct device *dev)
97{
98 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
99 if (core->io_addr)
100 iounmap(core->io_addr);
101 if (core->io_wrap)
102 iounmap(core->io_wrap);
103 kfree(core);
104}
105
106static int bcma_register_cores(struct bcma_bus *bus)
107{
108 struct bcma_device *core;
109 int err, dev_id = 0;
110
111 list_for_each_entry(core, &bus->cores, list) {
112
113 switch (core->id.id) {
114 case BCMA_CORE_4706_CHIPCOMMON:
115 case BCMA_CORE_CHIPCOMMON:
116 case BCMA_CORE_PCI:
117 case BCMA_CORE_PCIE:
118 case BCMA_CORE_MIPS_74K:
119 case BCMA_CORE_4706_MAC_GBIT_COMMON:
120 continue;
121 }
122
123
124 if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
125 core->core_unit > 0)
126 continue;
127
128 core->dev.release = bcma_release_core_dev;
129 core->dev.bus = &bcma_bus_type;
130 dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
131
132 switch (bus->hosttype) {
133 case BCMA_HOSTTYPE_PCI:
134 core->dev.parent = &bus->host_pci->dev;
135 core->dma_dev = &bus->host_pci->dev;
136 core->irq = bus->host_pci->irq;
137 break;
138 case BCMA_HOSTTYPE_SOC:
139 core->dev.dma_mask = &core->dev.coherent_dma_mask;
140 core->dma_dev = &core->dev;
141 break;
142 case BCMA_HOSTTYPE_SDIO:
143 break;
144 }
145
146 err = device_register(&core->dev);
147 if (err) {
148 bcma_err(bus,
149 "Could not register dev for core 0x%03X\n",
150 core->id.id);
151 continue;
152 }
153 core->dev_registered = true;
154 dev_id++;
155 }
156
157#ifdef CONFIG_BCMA_DRIVER_MIPS
158 if (bus->drv_cc.pflash.present) {
159 err = platform_device_register(&bcma_pflash_dev);
160 if (err)
161 bcma_err(bus, "Error registering parallel flash\n");
162 }
163#endif
164
165#ifdef CONFIG_BCMA_SFLASH
166 if (bus->drv_cc.sflash.present) {
167 err = platform_device_register(&bcma_sflash_dev);
168 if (err)
169 bcma_err(bus, "Error registering serial flash\n");
170 }
171#endif
172
173#ifdef CONFIG_BCMA_NFLASH
174 if (bus->drv_cc.nflash.present) {
175 err = platform_device_register(&bcma_nflash_dev);
176 if (err)
177 bcma_err(bus, "Error registering NAND flash\n");
178 }
179#endif
180 err = bcma_gpio_init(&bus->drv_cc);
181 if (err == -ENOTSUPP)
182 bcma_debug(bus, "GPIO driver not activated\n");
183 else if (err)
184 bcma_err(bus, "Error registering GPIO driver: %i\n", err);
185
186 if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
187 err = bcma_chipco_watchdog_register(&bus->drv_cc);
188 if (err)
189 bcma_err(bus, "Error registering watchdog driver\n");
190 }
191
192 return 0;
193}
194
195static void bcma_unregister_cores(struct bcma_bus *bus)
196{
197 struct bcma_device *core, *tmp;
198
199 list_for_each_entry_safe(core, tmp, &bus->cores, list) {
200 list_del(&core->list);
201 if (core->dev_registered)
202 device_unregister(&core->dev);
203 }
204 if (bus->hosttype == BCMA_HOSTTYPE_SOC)
205 platform_device_unregister(bus->drv_cc.watchdog);
206}
207
208int bcma_bus_register(struct bcma_bus *bus)
209{
210 int err;
211 struct bcma_device *core;
212
213 mutex_lock(&bcma_buses_mutex);
214 bus->num = bcma_bus_next_num++;
215 mutex_unlock(&bcma_buses_mutex);
216
217
218 err = bcma_bus_scan(bus);
219 if (err) {
220 bcma_err(bus, "Failed to scan: %d\n", err);
221 return -1;
222 }
223
224
225 core = bcma_find_core(bus, bcma_cc_core_id(bus));
226 if (core) {
227 bus->drv_cc.core = core;
228 bcma_core_chipcommon_early_init(&bus->drv_cc);
229 }
230
231
232 err = bcma_sprom_get(bus);
233 if (err == -ENOENT) {
234 bcma_err(bus, "No SPROM available\n");
235 } else if (err)
236 bcma_err(bus, "Failed to get SPROM: %d\n", err);
237
238
239 core = bcma_find_core(bus, bcma_cc_core_id(bus));
240 if (core) {
241 bus->drv_cc.core = core;
242 bcma_core_chipcommon_init(&bus->drv_cc);
243 }
244
245
246 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
247 if (core) {
248 bus->drv_mips.core = core;
249 bcma_core_mips_init(&bus->drv_mips);
250 }
251
252
253 core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0);
254 if (core) {
255 bus->drv_pci[0].core = core;
256 bcma_core_pci_init(&bus->drv_pci[0]);
257 }
258
259
260 core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);
261 if (core) {
262 bus->drv_pci[1].core = core;
263 bcma_core_pci_init(&bus->drv_pci[1]);
264 }
265
266
267 core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
268 if (core) {
269 bus->drv_gmac_cmn.core = core;
270 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
271 }
272
273
274 bcma_register_cores(bus);
275
276 bcma_info(bus, "Bus registered\n");
277
278 return 0;
279}
280
281void bcma_bus_unregister(struct bcma_bus *bus)
282{
283 struct bcma_device *cores[3];
284 int err;
285
286 err = bcma_gpio_unregister(&bus->drv_cc);
287 if (err == -EBUSY)
288 bcma_err(bus, "Some GPIOs are still in use.\n");
289 else if (err)
290 bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);
291
292 cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
293 cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE);
294 cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
295
296 bcma_unregister_cores(bus);
297
298 kfree(cores[2]);
299 kfree(cores[1]);
300 kfree(cores[0]);
301}
302
303int __init bcma_bus_early_register(struct bcma_bus *bus,
304 struct bcma_device *core_cc,
305 struct bcma_device *core_mips)
306{
307 int err;
308 struct bcma_device *core;
309 struct bcma_device_id match;
310
311 bcma_init_bus(bus);
312
313 match.manuf = BCMA_MANUF_BCM;
314 match.id = bcma_cc_core_id(bus);
315 match.class = BCMA_CL_SIM;
316 match.rev = BCMA_ANY_REV;
317
318
319 err = bcma_bus_scan_early(bus, &match, core_cc);
320 if (err) {
321 bcma_err(bus, "Failed to scan for common core: %d\n", err);
322 return -1;
323 }
324
325 match.manuf = BCMA_MANUF_MIPS;
326 match.id = BCMA_CORE_MIPS_74K;
327 match.class = BCMA_CL_SIM;
328 match.rev = BCMA_ANY_REV;
329
330
331 err = bcma_bus_scan_early(bus, &match, core_mips);
332 if (err) {
333 bcma_err(bus, "Failed to scan for mips core: %d\n", err);
334 return -1;
335 }
336
337
338 core = bcma_find_core(bus, bcma_cc_core_id(bus));
339 if (core) {
340 bus->drv_cc.core = core;
341 bcma_core_chipcommon_early_init(&bus->drv_cc);
342 }
343
344
345 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
346 if (core) {
347 bus->drv_mips.core = core;
348 bcma_core_mips_early_init(&bus->drv_mips);
349 }
350
351 bcma_info(bus, "Early bus registered\n");
352
353 return 0;
354}
355
356#ifdef CONFIG_PM
357int bcma_bus_suspend(struct bcma_bus *bus)
358{
359 struct bcma_device *core;
360
361 list_for_each_entry(core, &bus->cores, list) {
362 struct device_driver *drv = core->dev.driver;
363 if (drv) {
364 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
365 if (adrv->suspend)
366 adrv->suspend(core);
367 }
368 }
369 return 0;
370}
371
372int bcma_bus_resume(struct bcma_bus *bus)
373{
374 struct bcma_device *core;
375
376
377 if (bus->drv_cc.core) {
378 bus->drv_cc.setup_done = false;
379 bcma_core_chipcommon_init(&bus->drv_cc);
380 }
381
382 list_for_each_entry(core, &bus->cores, list) {
383 struct device_driver *drv = core->dev.driver;
384 if (drv) {
385 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
386 if (adrv->resume)
387 adrv->resume(core);
388 }
389 }
390
391 return 0;
392}
393#endif
394
395int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
396{
397 drv->drv.name = drv->name;
398 drv->drv.bus = &bcma_bus_type;
399 drv->drv.owner = owner;
400
401 return driver_register(&drv->drv);
402}
403EXPORT_SYMBOL_GPL(__bcma_driver_register);
404
405void bcma_driver_unregister(struct bcma_driver *drv)
406{
407 driver_unregister(&drv->drv);
408}
409EXPORT_SYMBOL_GPL(bcma_driver_unregister);
410
411static int bcma_bus_match(struct device *dev, struct device_driver *drv)
412{
413 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
414 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
415 const struct bcma_device_id *cid = &core->id;
416 const struct bcma_device_id *did;
417
418 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
419 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
420 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
421 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
422 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
423 return 1;
424 }
425 return 0;
426}
427
428static int bcma_device_probe(struct device *dev)
429{
430 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
431 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
432 drv);
433 int err = 0;
434
435 if (adrv->probe)
436 err = adrv->probe(core);
437
438 return err;
439}
440
441static int bcma_device_remove(struct device *dev)
442{
443 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
444 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
445 drv);
446
447 if (adrv->remove)
448 adrv->remove(core);
449
450 return 0;
451}
452
453static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
454{
455 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
456
457 return add_uevent_var(env,
458 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
459 core->id.manuf, core->id.id,
460 core->id.rev, core->id.class);
461}
462
463static int __init bcma_modinit(void)
464{
465 int err;
466
467 err = bus_register(&bcma_bus_type);
468 if (err)
469 return err;
470
471#ifdef CONFIG_BCMA_HOST_PCI
472 err = bcma_host_pci_init();
473 if (err) {
474 pr_err("PCI host initialization failed\n");
475 err = 0;
476 }
477#endif
478
479 return err;
480}
481fs_initcall(bcma_modinit);
482
483static void __exit bcma_modexit(void)
484{
485#ifdef CONFIG_BCMA_HOST_PCI
486 bcma_host_pci_exit();
487#endif
488 bus_unregister(&bcma_bus_type);
489}
490module_exit(bcma_modexit)
491
