Merge branch 'nfsd-next' of git://linux-nfs.org/~bfields/linux
[deliverable/linux.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>
8369ae33 10#include <linux/bcma/bcma.h>
eef72699 11#include <linux/slab.h>
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12
13MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
14MODULE_LICENSE("GPL");
15
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16/* contains the number the next bus should get. */
17static unsigned int bcma_bus_next_num = 0;
18
19/* bcma_buses_mutex locks the bcma_bus_next_num */
20static DEFINE_MUTEX(bcma_buses_mutex);
21
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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);
886b66ef 25static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
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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,
886b66ef 60 .uevent = bcma_device_uevent,
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61 .dev_attrs = bcma_device_attrs,
62};
63
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64static u16 bcma_cc_core_id(struct bcma_bus *bus)
65{
66 if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
67 return BCMA_CORE_4706_CHIPCOMMON;
68 return BCMA_CORE_CHIPCOMMON;
69}
70
1c9351cf 71struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
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72{
73 struct bcma_device *core;
74
75 list_for_each_entry(core, &bus->cores, list) {
76 if (core->id.id == coreid)
77 return core;
78 }
79 return NULL;
80}
1c9351cf 81EXPORT_SYMBOL_GPL(bcma_find_core);
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82
83static void bcma_release_core_dev(struct device *dev)
84{
85 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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86 if (core->io_addr)
87 iounmap(core->io_addr);
88 if (core->io_wrap)
89 iounmap(core->io_wrap);
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90 kfree(core);
91}
92
93static int bcma_register_cores(struct bcma_bus *bus)
94{
95 struct bcma_device *core;
96 int err, dev_id = 0;
97
98 list_for_each_entry(core, &bus->cores, list) {
99 /* We support that cores ourself */
100 switch (core->id.id) {
6d5cfc9f 101 case BCMA_CORE_4706_CHIPCOMMON:
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102 case BCMA_CORE_CHIPCOMMON:
103 case BCMA_CORE_PCI:
104 case BCMA_CORE_PCIE:
21e0534a 105 case BCMA_CORE_MIPS_74K:
e1ac4b40 106 case BCMA_CORE_4706_MAC_GBIT_COMMON:
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107 continue;
108 }
109
110 core->dev.release = bcma_release_core_dev;
111 core->dev.bus = &bcma_bus_type;
8f9ada4f 112 dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
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113
114 switch (bus->hosttype) {
115 case BCMA_HOSTTYPE_PCI:
116 core->dev.parent = &bus->host_pci->dev;
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117 core->dma_dev = &bus->host_pci->dev;
118 core->irq = bus->host_pci->irq;
8369ae33 119 break;
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120 case BCMA_HOSTTYPE_SOC:
121 core->dev.dma_mask = &core->dev.coherent_dma_mask;
122 core->dma_dev = &core->dev;
123 break;
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124 case BCMA_HOSTTYPE_SDIO:
125 break;
126 }
127
128 err = device_register(&core->dev);
129 if (err) {
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130 bcma_err(bus,
131 "Could not register dev for core 0x%03X\n",
132 core->id.id);
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133 continue;
134 }
135 core->dev_registered = true;
136 dev_id++;
137 }
138
139 return 0;
140}
141
142static void bcma_unregister_cores(struct bcma_bus *bus)
143{
144 struct bcma_device *core;
145
146 list_for_each_entry(core, &bus->cores, list) {
147 if (core->dev_registered)
148 device_unregister(&core->dev);
149 }
150}
151
d1a7a8e1 152int __devinit bcma_bus_register(struct bcma_bus *bus)
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153{
154 int err;
155 struct bcma_device *core;
156
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157 mutex_lock(&bcma_buses_mutex);
158 bus->num = bcma_bus_next_num++;
159 mutex_unlock(&bcma_buses_mutex);
160
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161 /* Scan for devices (cores) */
162 err = bcma_bus_scan(bus);
163 if (err) {
3d9d8af3 164 bcma_err(bus, "Failed to scan: %d\n", err);
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165 return -1;
166 }
167
168 /* Init CC core */
6d5cfc9f 169 core = bcma_find_core(bus, bcma_cc_core_id(bus));
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170 if (core) {
171 bus->drv_cc.core = core;
172 bcma_core_chipcommon_init(&bus->drv_cc);
173 }
174
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175 /* Init MIPS core */
176 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
177 if (core) {
178 bus->drv_mips.core = core;
179 bcma_core_mips_init(&bus->drv_mips);
180 }
181
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182 /* Init PCIE core */
183 core = bcma_find_core(bus, BCMA_CORE_PCIE);
184 if (core) {
185 bus->drv_pci.core = core;
186 bcma_core_pci_init(&bus->drv_pci);
187 }
188
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189 /* Init GBIT MAC COMMON core */
190 core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
191 if (core) {
192 bus->drv_gmac_cmn.core = core;
193 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
194 }
195
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196 /* Try to get SPROM */
197 err = bcma_sprom_get(bus);
534e7a45 198 if (err == -ENOENT) {
3d9d8af3 199 bcma_err(bus, "No SPROM available\n");
2e6b4119 200 } else if (err)
3d9d8af3 201 bcma_err(bus, "Failed to get SPROM: %d\n", err);
27f18dc2 202
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203 /* Register found cores */
204 bcma_register_cores(bus);
205
3d9d8af3 206 bcma_info(bus, "Bus registered\n");
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207
208 return 0;
209}
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210
211void bcma_bus_unregister(struct bcma_bus *bus)
212{
213 bcma_unregister_cores(bus);
214}
8369ae33 215
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216int __init bcma_bus_early_register(struct bcma_bus *bus,
217 struct bcma_device *core_cc,
218 struct bcma_device *core_mips)
219{
220 int err;
221 struct bcma_device *core;
222 struct bcma_device_id match;
223
224 bcma_init_bus(bus);
225
226 match.manuf = BCMA_MANUF_BCM;
6d5cfc9f 227 match.id = bcma_cc_core_id(bus);
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228 match.class = BCMA_CL_SIM;
229 match.rev = BCMA_ANY_REV;
230
231 /* Scan for chip common core */
232 err = bcma_bus_scan_early(bus, &match, core_cc);
233 if (err) {
3d9d8af3 234 bcma_err(bus, "Failed to scan for common core: %d\n", err);
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235 return -1;
236 }
237
238 match.manuf = BCMA_MANUF_MIPS;
239 match.id = BCMA_CORE_MIPS_74K;
240 match.class = BCMA_CL_SIM;
241 match.rev = BCMA_ANY_REV;
242
243 /* Scan for mips core */
244 err = bcma_bus_scan_early(bus, &match, core_mips);
245 if (err) {
3d9d8af3 246 bcma_err(bus, "Failed to scan for mips core: %d\n", err);
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247 return -1;
248 }
249
250 /* Init CC core */
6d5cfc9f 251 core = bcma_find_core(bus, bcma_cc_core_id(bus));
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252 if (core) {
253 bus->drv_cc.core = core;
254 bcma_core_chipcommon_init(&bus->drv_cc);
255 }
256
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257 /* Init MIPS core */
258 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
259 if (core) {
260 bus->drv_mips.core = core;
261 bcma_core_mips_init(&bus->drv_mips);
262 }
263
3d9d8af3 264 bcma_info(bus, "Early bus registered\n");
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265
266 return 0;
267}
268
775ab521 269#ifdef CONFIG_PM
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270int bcma_bus_suspend(struct bcma_bus *bus)
271{
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272 struct bcma_device *core;
273
274 list_for_each_entry(core, &bus->cores, list) {
275 struct device_driver *drv = core->dev.driver;
276 if (drv) {
277 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
278 if (adrv->suspend)
279 adrv->suspend(core);
280 }
281 }
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282 return 0;
283}
284
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285int bcma_bus_resume(struct bcma_bus *bus)
286{
287 struct bcma_device *core;
288
289 /* Init CC core */
6d5cfc9f 290 if (bus->drv_cc.core) {
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291 bus->drv_cc.setup_done = false;
292 bcma_core_chipcommon_init(&bus->drv_cc);
293 }
294
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295 list_for_each_entry(core, &bus->cores, list) {
296 struct device_driver *drv = core->dev.driver;
297 if (drv) {
298 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
299 if (adrv->resume)
300 adrv->resume(core);
301 }
302 }
303
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304 return 0;
305}
306#endif
307
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308int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
309{
310 drv->drv.name = drv->name;
311 drv->drv.bus = &bcma_bus_type;
312 drv->drv.owner = owner;
313
314 return driver_register(&drv->drv);
315}
316EXPORT_SYMBOL_GPL(__bcma_driver_register);
317
318void bcma_driver_unregister(struct bcma_driver *drv)
319{
320 driver_unregister(&drv->drv);
321}
322EXPORT_SYMBOL_GPL(bcma_driver_unregister);
323
324static int bcma_bus_match(struct device *dev, struct device_driver *drv)
325{
326 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
327 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
328 const struct bcma_device_id *cid = &core->id;
329 const struct bcma_device_id *did;
330
331 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
332 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
333 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
334 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
335 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
336 return 1;
337 }
338 return 0;
339}
340
341static int bcma_device_probe(struct device *dev)
342{
343 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
344 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
345 drv);
346 int err = 0;
347
348 if (adrv->probe)
349 err = adrv->probe(core);
350
351 return err;
352}
353
354static int bcma_device_remove(struct device *dev)
355{
356 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
357 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
358 drv);
359
360 if (adrv->remove)
361 adrv->remove(core);
362
363 return 0;
364}
365
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366static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
367{
368 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
369
370 return add_uevent_var(env,
371 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
372 core->id.manuf, core->id.id,
373 core->id.rev, core->id.class);
374}
375
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376static int __init bcma_modinit(void)
377{
378 int err;
379
380 err = bus_register(&bcma_bus_type);
381 if (err)
382 return err;
383
384#ifdef CONFIG_BCMA_HOST_PCI
385 err = bcma_host_pci_init();
386 if (err) {
387 pr_err("PCI host initialization failed\n");
388 err = 0;
389 }
390#endif
391
392 return err;
393}
394fs_initcall(bcma_modinit);
395
396static void __exit bcma_modexit(void)
397{
398#ifdef CONFIG_BCMA_HOST_PCI
399 bcma_host_pci_exit();
400#endif
401 bus_unregister(&bcma_bus_type);
402}
403module_exit(bcma_modexit)
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