Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / bcma / main.c
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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>
d57ef3a6 10#include <linux/platform_device.h>
8369ae33 11#include <linux/bcma/bcma.h>
eef72699 12#include <linux/slab.h>
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13
14MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
15MODULE_LICENSE("GPL");
16
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17/* contains the number the next bus should get. */
18static unsigned int bcma_bus_next_num = 0;
19
20/* bcma_buses_mutex locks the bcma_bus_next_num */
21static DEFINE_MUTEX(bcma_buses_mutex);
22
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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);
886b66ef 26static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
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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,
886b66ef 61 .uevent = bcma_device_uevent,
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62 .dev_attrs = bcma_device_attrs,
63};
64
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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
1c9351cf 72struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
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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}
1c9351cf 82EXPORT_SYMBOL_GPL(bcma_find_core);
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83
84static void bcma_release_core_dev(struct device *dev)
85{
86 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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87 if (core->io_addr)
88 iounmap(core->io_addr);
89 if (core->io_wrap)
90 iounmap(core->io_wrap);
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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 /* We support that cores ourself */
101 switch (core->id.id) {
6d5cfc9f 102 case BCMA_CORE_4706_CHIPCOMMON:
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103 case BCMA_CORE_CHIPCOMMON:
104 case BCMA_CORE_PCI:
105 case BCMA_CORE_PCIE:
21e0534a 106 case BCMA_CORE_MIPS_74K:
e1ac4b40 107 case BCMA_CORE_4706_MAC_GBIT_COMMON:
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108 continue;
109 }
110
111 core->dev.release = bcma_release_core_dev;
112 core->dev.bus = &bcma_bus_type;
8f9ada4f 113 dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
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114
115 switch (bus->hosttype) {
116 case BCMA_HOSTTYPE_PCI:
117 core->dev.parent = &bus->host_pci->dev;
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118 core->dma_dev = &bus->host_pci->dev;
119 core->irq = bus->host_pci->irq;
8369ae33 120 break;
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121 case BCMA_HOSTTYPE_SOC:
122 core->dev.dma_mask = &core->dev.coherent_dma_mask;
123 core->dma_dev = &core->dev;
124 break;
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125 case BCMA_HOSTTYPE_SDIO:
126 break;
127 }
128
129 err = device_register(&core->dev);
130 if (err) {
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131 bcma_err(bus,
132 "Could not register dev for core 0x%03X\n",
133 core->id.id);
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134 continue;
135 }
136 core->dev_registered = true;
137 dev_id++;
138 }
139
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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
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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
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156 return 0;
157}
158
159static void bcma_unregister_cores(struct bcma_bus *bus)
160{
161 struct bcma_device *core;
162
163 list_for_each_entry(core, &bus->cores, list) {
164 if (core->dev_registered)
165 device_unregister(&core->dev);
166 }
167}
168
d1a7a8e1 169int __devinit bcma_bus_register(struct bcma_bus *bus)
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170{
171 int err;
172 struct bcma_device *core;
173
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174 mutex_lock(&bcma_buses_mutex);
175 bus->num = bcma_bus_next_num++;
176 mutex_unlock(&bcma_buses_mutex);
177
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178 /* Scan for devices (cores) */
179 err = bcma_bus_scan(bus);
180 if (err) {
3d9d8af3 181 bcma_err(bus, "Failed to scan: %d\n", err);
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182 return -1;
183 }
184
185 /* Init CC core */
6d5cfc9f 186 core = bcma_find_core(bus, bcma_cc_core_id(bus));
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187 if (core) {
188 bus->drv_cc.core = core;
189 bcma_core_chipcommon_init(&bus->drv_cc);
190 }
191
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192 /* Init MIPS core */
193 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
194 if (core) {
195 bus->drv_mips.core = core;
196 bcma_core_mips_init(&bus->drv_mips);
197 }
198
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199 /* Init PCIE core */
200 core = bcma_find_core(bus, BCMA_CORE_PCIE);
201 if (core) {
202 bus->drv_pci.core = core;
203 bcma_core_pci_init(&bus->drv_pci);
204 }
205
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206 /* Init GBIT MAC COMMON core */
207 core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
208 if (core) {
209 bus->drv_gmac_cmn.core = core;
210 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
211 }
212
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213 /* Try to get SPROM */
214 err = bcma_sprom_get(bus);
534e7a45 215 if (err == -ENOENT) {
3d9d8af3 216 bcma_err(bus, "No SPROM available\n");
2e6b4119 217 } else if (err)
3d9d8af3 218 bcma_err(bus, "Failed to get SPROM: %d\n", err);
27f18dc2 219
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220 /* Register found cores */
221 bcma_register_cores(bus);
222
3d9d8af3 223 bcma_info(bus, "Bus registered\n");
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224
225 return 0;
226}
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227
228void bcma_bus_unregister(struct bcma_bus *bus)
229{
230 bcma_unregister_cores(bus);
231}
8369ae33 232
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233int __init bcma_bus_early_register(struct bcma_bus *bus,
234 struct bcma_device *core_cc,
235 struct bcma_device *core_mips)
236{
237 int err;
238 struct bcma_device *core;
239 struct bcma_device_id match;
240
241 bcma_init_bus(bus);
242
243 match.manuf = BCMA_MANUF_BCM;
6d5cfc9f 244 match.id = bcma_cc_core_id(bus);
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245 match.class = BCMA_CL_SIM;
246 match.rev = BCMA_ANY_REV;
247
248 /* Scan for chip common core */
249 err = bcma_bus_scan_early(bus, &match, core_cc);
250 if (err) {
3d9d8af3 251 bcma_err(bus, "Failed to scan for common core: %d\n", err);
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252 return -1;
253 }
254
255 match.manuf = BCMA_MANUF_MIPS;
256 match.id = BCMA_CORE_MIPS_74K;
257 match.class = BCMA_CL_SIM;
258 match.rev = BCMA_ANY_REV;
259
260 /* Scan for mips core */
261 err = bcma_bus_scan_early(bus, &match, core_mips);
262 if (err) {
3d9d8af3 263 bcma_err(bus, "Failed to scan for mips core: %d\n", err);
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264 return -1;
265 }
266
267 /* Init CC core */
6d5cfc9f 268 core = bcma_find_core(bus, bcma_cc_core_id(bus));
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269 if (core) {
270 bus->drv_cc.core = core;
271 bcma_core_chipcommon_init(&bus->drv_cc);
272 }
273
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274 /* Init MIPS core */
275 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
276 if (core) {
277 bus->drv_mips.core = core;
278 bcma_core_mips_init(&bus->drv_mips);
279 }
280
3d9d8af3 281 bcma_info(bus, "Early bus registered\n");
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282
283 return 0;
284}
285
775ab521 286#ifdef CONFIG_PM
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287int bcma_bus_suspend(struct bcma_bus *bus)
288{
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289 struct bcma_device *core;
290
291 list_for_each_entry(core, &bus->cores, list) {
292 struct device_driver *drv = core->dev.driver;
293 if (drv) {
294 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
295 if (adrv->suspend)
296 adrv->suspend(core);
297 }
298 }
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299 return 0;
300}
301
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302int bcma_bus_resume(struct bcma_bus *bus)
303{
304 struct bcma_device *core;
305
306 /* Init CC core */
6d5cfc9f 307 if (bus->drv_cc.core) {
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308 bus->drv_cc.setup_done = false;
309 bcma_core_chipcommon_init(&bus->drv_cc);
310 }
311
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312 list_for_each_entry(core, &bus->cores, list) {
313 struct device_driver *drv = core->dev.driver;
314 if (drv) {
315 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
316 if (adrv->resume)
317 adrv->resume(core);
318 }
319 }
320
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321 return 0;
322}
323#endif
324
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325int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
326{
327 drv->drv.name = drv->name;
328 drv->drv.bus = &bcma_bus_type;
329 drv->drv.owner = owner;
330
331 return driver_register(&drv->drv);
332}
333EXPORT_SYMBOL_GPL(__bcma_driver_register);
334
335void bcma_driver_unregister(struct bcma_driver *drv)
336{
337 driver_unregister(&drv->drv);
338}
339EXPORT_SYMBOL_GPL(bcma_driver_unregister);
340
341static int bcma_bus_match(struct device *dev, struct device_driver *drv)
342{
343 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
344 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
345 const struct bcma_device_id *cid = &core->id;
346 const struct bcma_device_id *did;
347
348 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
349 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
350 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
351 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
352 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
353 return 1;
354 }
355 return 0;
356}
357
358static int bcma_device_probe(struct device *dev)
359{
360 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
361 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
362 drv);
363 int err = 0;
364
365 if (adrv->probe)
366 err = adrv->probe(core);
367
368 return err;
369}
370
371static int bcma_device_remove(struct device *dev)
372{
373 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
374 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
375 drv);
376
377 if (adrv->remove)
378 adrv->remove(core);
379
380 return 0;
381}
382
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383static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
384{
385 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
386
387 return add_uevent_var(env,
388 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
389 core->id.manuf, core->id.id,
390 core->id.rev, core->id.class);
391}
392
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393static int __init bcma_modinit(void)
394{
395 int err;
396
397 err = bus_register(&bcma_bus_type);
398 if (err)
399 return err;
400
401#ifdef CONFIG_BCMA_HOST_PCI
402 err = bcma_host_pci_init();
403 if (err) {
404 pr_err("PCI host initialization failed\n");
405 err = 0;
406 }
407#endif
408
409 return err;
410}
411fs_initcall(bcma_modinit);
412
413static void __exit bcma_modexit(void)
414{
415#ifdef CONFIG_BCMA_HOST_PCI
416 bcma_host_pci_exit();
417#endif
418 bus_unregister(&bcma_bus_type);
419}
420module_exit(bcma_modexit)