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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"
9#include <linux/bcma/bcma.h>
10#include <linux/slab.h>
11
12MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
13MODULE_LICENSE("GPL");
14
15static int bcma_bus_match(struct device *dev, struct device_driver *drv);
16static int bcma_device_probe(struct device *dev);
17static int bcma_device_remove(struct device *dev);
18static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
19
20static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf)
21{
22 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
23 return sprintf(buf, "0x%03X\n", core->id.manuf);
24}
25static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf)
26{
27 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
28 return sprintf(buf, "0x%03X\n", core->id.id);
29}
30static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf)
31{
32 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
33 return sprintf(buf, "0x%02X\n", core->id.rev);
34}
35static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf)
36{
37 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
38 return sprintf(buf, "0x%X\n", core->id.class);
39}
40static struct device_attribute bcma_device_attrs[] = {
41 __ATTR_RO(manuf),
42 __ATTR_RO(id),
43 __ATTR_RO(rev),
44 __ATTR_RO(class),
45 __ATTR_NULL,
46};
47
48static struct bus_type bcma_bus_type = {
49 .name = "bcma",
50 .match = bcma_bus_match,
51 .probe = bcma_device_probe,
52 .remove = bcma_device_remove,
53 .uevent = bcma_device_uevent,
54 .dev_attrs = bcma_device_attrs,
55};
56
57static struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
58{
59 struct bcma_device *core;
60
61 list_for_each_entry(core, &bus->cores, list) {
62 if (core->id.id == coreid)
63 return core;
64 }
65 return NULL;
66}
67
68static void bcma_release_core_dev(struct device *dev)
69{
70 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
71 kfree(core);
72}
73
74static int bcma_register_cores(struct bcma_bus *bus)
75{
76 struct bcma_device *core;
77 int err, dev_id = 0;
78
79 list_for_each_entry(core, &bus->cores, list) {
80 /* We support that cores ourself */
81 switch (core->id.id) {
82 case BCMA_CORE_CHIPCOMMON:
83 case BCMA_CORE_PCI:
84 case BCMA_CORE_PCIE:
85 continue;
86 }
87
88 core->dev.release = bcma_release_core_dev;
89 core->dev.bus = &bcma_bus_type;
90 dev_set_name(&core->dev, "bcma%d:%d", 0/*bus->num*/, dev_id);
91
92 switch (bus->hosttype) {
93 case BCMA_HOSTTYPE_PCI:
94 core->dev.parent = &bus->host_pci->dev;
95 core->dma_dev = &bus->host_pci->dev;
96 core->irq = bus->host_pci->irq;
97 break;
98 case BCMA_HOSTTYPE_NONE:
99 case BCMA_HOSTTYPE_SDIO:
100 break;
101 }
102
103 err = device_register(&core->dev);
104 if (err) {
105 pr_err("Could not register dev for core 0x%03X\n",
106 core->id.id);
107 continue;
108 }
109 core->dev_registered = true;
110 dev_id++;
111 }
112
113 return 0;
114}
115
116static void bcma_unregister_cores(struct bcma_bus *bus)
117{
118 struct bcma_device *core;
119
120 list_for_each_entry(core, &bus->cores, list) {
121 if (core->dev_registered)
122 device_unregister(&core->dev);
123 }
124}
125
126int bcma_bus_register(struct bcma_bus *bus)
127{
128 int err;
129 struct bcma_device *core;
130
131 /* Scan for devices (cores) */
132 err = bcma_bus_scan(bus);
133 if (err) {
134 pr_err("Failed to scan: %d\n", err);
135 return -1;
136 }
137
138 /* Init CC core */
139 core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
140 if (core) {
141 bus->drv_cc.core = core;
142 bcma_core_chipcommon_init(&bus->drv_cc);
143 }
144
145 /* Init PCIE core */
146 core = bcma_find_core(bus, BCMA_CORE_PCIE);
147 if (core) {
148 bus->drv_pci.core = core;
149 bcma_core_pci_init(&bus->drv_pci);
150 }
151
152 /* Try to get SPROM */
153 err = bcma_sprom_get(bus);
154 if (err == -ENOENT) {
155 pr_err("No SPROM available\n");
156 } else if (err) {
157 pr_err("Failed to get SPROM: %d\n", err);
158 return -ENOENT;
159 }
160
161 /* Register found cores */
162 bcma_register_cores(bus);
163
164 pr_info("Bus registered\n");
165
166 return 0;
167}
168
169void bcma_bus_unregister(struct bcma_bus *bus)
170{
171 bcma_unregister_cores(bus);
172}
173
174int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
175{
176 drv->drv.name = drv->name;
177 drv->drv.bus = &bcma_bus_type;
178 drv->drv.owner = owner;
179
180 return driver_register(&drv->drv);
181}
182EXPORT_SYMBOL_GPL(__bcma_driver_register);
183
184void bcma_driver_unregister(struct bcma_driver *drv)
185{
186 driver_unregister(&drv->drv);
187}
188EXPORT_SYMBOL_GPL(bcma_driver_unregister);
189
190static int bcma_bus_match(struct device *dev, struct device_driver *drv)
191{
192 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
193 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
194 const struct bcma_device_id *cid = &core->id;
195 const struct bcma_device_id *did;
196
197 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
198 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
199 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
200 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
201 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
202 return 1;
203 }
204 return 0;
205}
206
207static int bcma_device_probe(struct device *dev)
208{
209 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
210 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
211 drv);
212 int err = 0;
213
214 if (adrv->probe)
215 err = adrv->probe(core);
216
217 return err;
218}
219
220static int bcma_device_remove(struct device *dev)
221{
222 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
223 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
224 drv);
225
226 if (adrv->remove)
227 adrv->remove(core);
228
229 return 0;
230}
231
232static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
233{
234 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
235
236 return add_uevent_var(env,
237 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
238 core->id.manuf, core->id.id,
239 core->id.rev, core->id.class);
240}
241
242static int __init bcma_modinit(void)
243{
244 int err;
245
246 err = bus_register(&bcma_bus_type);
247 if (err)
248 return err;
249
250#ifdef CONFIG_BCMA_HOST_PCI
251 err = bcma_host_pci_init();
252 if (err) {
253 pr_err("PCI host initialization failed\n");
254 err = 0;
255 }
256#endif
257
258 return err;
259}
260fs_initcall(bcma_modinit);
261
262static void __exit bcma_modexit(void)
263{
264#ifdef CONFIG_BCMA_HOST_PCI
265 bcma_host_pci_exit();
266#endif
267 bus_unregister(&bcma_bus_type);
268}
269module_exit(bcma_modexit)
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"
9#include <linux/module.h>
10#include <linux/mmc/sdio_func.h>
11#include <linux/platform_device.h>
12#include <linux/pci.h>
13#include <linux/bcma/bcma.h>
14#include <linux/slab.h>
15#include <linux/of_address.h>
16#include <linux/of_irq.h>
17#include <linux/of_platform.h>
18
19MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
20MODULE_LICENSE("GPL");
21
22/* contains the number the next bus should get. */
23static unsigned int bcma_bus_next_num = 0;
24
25/* bcma_buses_mutex locks the bcma_bus_next_num */
26static DEFINE_MUTEX(bcma_buses_mutex);
27
28static int bcma_bus_match(struct device *dev, struct device_driver *drv);
29static int bcma_device_probe(struct device *dev);
30static int bcma_device_remove(struct device *dev);
31static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);
32
33static ssize_t manuf_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.manuf);
37}
38static DEVICE_ATTR_RO(manuf);
39
40static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf)
41{
42 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
43 return sprintf(buf, "0x%03X\n", core->id.id);
44}
45static DEVICE_ATTR_RO(id);
46
47static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf)
48{
49 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
50 return sprintf(buf, "0x%02X\n", core->id.rev);
51}
52static DEVICE_ATTR_RO(rev);
53
54static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf)
55{
56 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
57 return sprintf(buf, "0x%X\n", core->id.class);
58}
59static DEVICE_ATTR_RO(class);
60
61static struct attribute *bcma_device_attrs[] = {
62 &dev_attr_manuf.attr,
63 &dev_attr_id.attr,
64 &dev_attr_rev.attr,
65 &dev_attr_class.attr,
66 NULL,
67};
68ATTRIBUTE_GROUPS(bcma_device);
69
70static struct bus_type bcma_bus_type = {
71 .name = "bcma",
72 .match = bcma_bus_match,
73 .probe = bcma_device_probe,
74 .remove = bcma_device_remove,
75 .uevent = bcma_device_uevent,
76 .dev_groups = bcma_device_groups,
77};
78
79static u16 bcma_cc_core_id(struct bcma_bus *bus)
80{
81 if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
82 return BCMA_CORE_4706_CHIPCOMMON;
83 return BCMA_CORE_CHIPCOMMON;
84}
85
86struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
87 u8 unit)
88{
89 struct bcma_device *core;
90
91 list_for_each_entry(core, &bus->cores, list) {
92 if (core->id.id == coreid && core->core_unit == unit)
93 return core;
94 }
95 return NULL;
96}
97EXPORT_SYMBOL_GPL(bcma_find_core_unit);
98
99bool bcma_wait_value(struct bcma_device *core, u16 reg, u32 mask, u32 value,
100 int timeout)
101{
102 unsigned long deadline = jiffies + timeout;
103 u32 val;
104
105 do {
106 val = bcma_read32(core, reg);
107 if ((val & mask) == value)
108 return true;
109 cpu_relax();
110 udelay(10);
111 } while (!time_after_eq(jiffies, deadline));
112
113 bcma_warn(core->bus, "Timeout waiting for register 0x%04X!\n", reg);
114
115 return false;
116}
117
118static void bcma_release_core_dev(struct device *dev)
119{
120 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
121 if (core->io_addr)
122 iounmap(core->io_addr);
123 if (core->io_wrap)
124 iounmap(core->io_wrap);
125 kfree(core);
126}
127
128static bool bcma_is_core_needed_early(u16 core_id)
129{
130 switch (core_id) {
131 case BCMA_CORE_NS_NAND:
132 case BCMA_CORE_NS_QSPI:
133 return true;
134 }
135
136 return false;
137}
138
139static struct device_node *bcma_of_find_child_device(struct platform_device *parent,
140 struct bcma_device *core)
141{
142 struct device_node *node;
143 u64 size;
144 const __be32 *reg;
145
146 if (!parent || !parent->dev.of_node)
147 return NULL;
148
149 for_each_child_of_node(parent->dev.of_node, node) {
150 reg = of_get_address(node, 0, &size, NULL);
151 if (!reg)
152 continue;
153 if (of_translate_address(node, reg) == core->addr)
154 return node;
155 }
156 return NULL;
157}
158
159static int bcma_of_irq_parse(struct platform_device *parent,
160 struct bcma_device *core,
161 struct of_phandle_args *out_irq, int num)
162{
163 __be32 laddr[1];
164 int rc;
165
166 if (core->dev.of_node) {
167 rc = of_irq_parse_one(core->dev.of_node, num, out_irq);
168 if (!rc)
169 return rc;
170 }
171
172 out_irq->np = parent->dev.of_node;
173 out_irq->args_count = 1;
174 out_irq->args[0] = num;
175
176 laddr[0] = cpu_to_be32(core->addr);
177 return of_irq_parse_raw(laddr, out_irq);
178}
179
180static unsigned int bcma_of_get_irq(struct platform_device *parent,
181 struct bcma_device *core, int num)
182{
183 struct of_phandle_args out_irq;
184 int ret;
185
186 if (!IS_ENABLED(CONFIG_OF_IRQ) || !parent || !parent->dev.of_node)
187 return 0;
188
189 ret = bcma_of_irq_parse(parent, core, &out_irq, num);
190 if (ret) {
191 bcma_debug(core->bus, "bcma_of_get_irq() failed with rc=%d\n",
192 ret);
193 return 0;
194 }
195
196 return irq_create_of_mapping(&out_irq);
197}
198
199static void bcma_of_fill_device(struct platform_device *parent,
200 struct bcma_device *core)
201{
202 struct device_node *node;
203
204 if (!IS_ENABLED(CONFIG_OF_IRQ))
205 return;
206
207 node = bcma_of_find_child_device(parent, core);
208 if (node)
209 core->dev.of_node = node;
210
211 core->irq = bcma_of_get_irq(parent, core, 0);
212
213 of_dma_configure(&core->dev, node);
214}
215
216unsigned int bcma_core_irq(struct bcma_device *core, int num)
217{
218 struct bcma_bus *bus = core->bus;
219 unsigned int mips_irq;
220
221 switch (bus->hosttype) {
222 case BCMA_HOSTTYPE_PCI:
223 return bus->host_pci->irq;
224 case BCMA_HOSTTYPE_SOC:
225 if (bus->drv_mips.core && num == 0) {
226 mips_irq = bcma_core_mips_irq(core);
227 return mips_irq <= 4 ? mips_irq + 2 : 0;
228 }
229 if (bus->host_pdev)
230 return bcma_of_get_irq(bus->host_pdev, core, num);
231 return 0;
232 case BCMA_HOSTTYPE_SDIO:
233 return 0;
234 }
235
236 return 0;
237}
238EXPORT_SYMBOL(bcma_core_irq);
239
240void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core)
241{
242 core->dev.release = bcma_release_core_dev;
243 core->dev.bus = &bcma_bus_type;
244 dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);
245
246 switch (bus->hosttype) {
247 case BCMA_HOSTTYPE_PCI:
248 core->dev.parent = &bus->host_pci->dev;
249 core->dma_dev = &bus->host_pci->dev;
250 core->irq = bus->host_pci->irq;
251 break;
252 case BCMA_HOSTTYPE_SOC:
253 if (IS_ENABLED(CONFIG_OF) && bus->host_pdev) {
254 core->dma_dev = &bus->host_pdev->dev;
255 core->dev.parent = &bus->host_pdev->dev;
256 bcma_of_fill_device(bus->host_pdev, core);
257 } else {
258 core->dev.dma_mask = &core->dev.coherent_dma_mask;
259 core->dma_dev = &core->dev;
260 }
261 break;
262 case BCMA_HOSTTYPE_SDIO:
263 break;
264 }
265}
266
267struct device *bcma_bus_get_host_dev(struct bcma_bus *bus)
268{
269 switch (bus->hosttype) {
270 case BCMA_HOSTTYPE_PCI:
271 if (bus->host_pci)
272 return &bus->host_pci->dev;
273 else
274 return NULL;
275 case BCMA_HOSTTYPE_SOC:
276 if (bus->host_pdev)
277 return &bus->host_pdev->dev;
278 else
279 return NULL;
280 case BCMA_HOSTTYPE_SDIO:
281 if (bus->host_sdio)
282 return &bus->host_sdio->dev;
283 else
284 return NULL;
285 }
286 return NULL;
287}
288
289void bcma_init_bus(struct bcma_bus *bus)
290{
291 mutex_lock(&bcma_buses_mutex);
292 bus->num = bcma_bus_next_num++;
293 mutex_unlock(&bcma_buses_mutex);
294
295 INIT_LIST_HEAD(&bus->cores);
296 bus->nr_cores = 0;
297
298 bcma_detect_chip(bus);
299}
300
301static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core)
302{
303 int err;
304
305 err = device_register(&core->dev);
306 if (err) {
307 bcma_err(bus, "Could not register dev for core 0x%03X\n",
308 core->id.id);
309 put_device(&core->dev);
310 return;
311 }
312 core->dev_registered = true;
313}
314
315static int bcma_register_devices(struct bcma_bus *bus)
316{
317 struct bcma_device *core;
318 int err;
319
320 list_for_each_entry(core, &bus->cores, list) {
321 /* We support that cores ourself */
322 switch (core->id.id) {
323 case BCMA_CORE_4706_CHIPCOMMON:
324 case BCMA_CORE_CHIPCOMMON:
325 case BCMA_CORE_NS_CHIPCOMMON_B:
326 case BCMA_CORE_PCI:
327 case BCMA_CORE_PCIE:
328 case BCMA_CORE_PCIE2:
329 case BCMA_CORE_MIPS_74K:
330 case BCMA_CORE_4706_MAC_GBIT_COMMON:
331 continue;
332 }
333
334 /* Early cores were already registered */
335 if (bcma_is_core_needed_early(core->id.id))
336 continue;
337
338 /* Only first GMAC core on BCM4706 is connected and working */
339 if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
340 core->core_unit > 0)
341 continue;
342
343 bcma_register_core(bus, core);
344 }
345
346#ifdef CONFIG_BCMA_PFLASH
347 if (bus->drv_cc.pflash.present) {
348 err = platform_device_register(&bcma_pflash_dev);
349 if (err)
350 bcma_err(bus, "Error registering parallel flash\n");
351 }
352#endif
353
354#ifdef CONFIG_BCMA_SFLASH
355 if (bus->drv_cc.sflash.present) {
356 err = platform_device_register(&bcma_sflash_dev);
357 if (err)
358 bcma_err(bus, "Error registering serial flash\n");
359 }
360#endif
361
362#ifdef CONFIG_BCMA_NFLASH
363 if (bus->drv_cc.nflash.present) {
364 err = platform_device_register(&bcma_nflash_dev);
365 if (err)
366 bcma_err(bus, "Error registering NAND flash\n");
367 }
368#endif
369 err = bcma_gpio_init(&bus->drv_cc);
370 if (err == -ENOTSUPP)
371 bcma_debug(bus, "GPIO driver not activated\n");
372 else if (err)
373 bcma_err(bus, "Error registering GPIO driver: %i\n", err);
374
375 if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
376 err = bcma_chipco_watchdog_register(&bus->drv_cc);
377 if (err)
378 bcma_err(bus, "Error registering watchdog driver\n");
379 }
380
381 return 0;
382}
383
384void bcma_unregister_cores(struct bcma_bus *bus)
385{
386 struct bcma_device *core, *tmp;
387
388 list_for_each_entry_safe(core, tmp, &bus->cores, list) {
389 if (!core->dev_registered)
390 continue;
391 list_del(&core->list);
392 device_unregister(&core->dev);
393 }
394 if (bus->hosttype == BCMA_HOSTTYPE_SOC)
395 platform_device_unregister(bus->drv_cc.watchdog);
396
397 /* Now noone uses internally-handled cores, we can free them */
398 list_for_each_entry_safe(core, tmp, &bus->cores, list) {
399 list_del(&core->list);
400 kfree(core);
401 }
402}
403
404int bcma_bus_register(struct bcma_bus *bus)
405{
406 int err;
407 struct bcma_device *core;
408 struct device *dev;
409
410 /* Scan for devices (cores) */
411 err = bcma_bus_scan(bus);
412 if (err) {
413 bcma_err(bus, "Failed to scan: %d\n", err);
414 return err;
415 }
416
417 /* Early init CC core */
418 core = bcma_find_core(bus, bcma_cc_core_id(bus));
419 if (core) {
420 bus->drv_cc.core = core;
421 bcma_core_chipcommon_early_init(&bus->drv_cc);
422 }
423
424 /* Early init PCIE core */
425 core = bcma_find_core(bus, BCMA_CORE_PCIE);
426 if (core) {
427 bus->drv_pci[0].core = core;
428 bcma_core_pci_early_init(&bus->drv_pci[0]);
429 }
430
431 dev = bcma_bus_get_host_dev(bus);
432 if (dev) {
433 of_platform_default_populate(dev->of_node, NULL, dev);
434 }
435
436 /* Cores providing flash access go before SPROM init */
437 list_for_each_entry(core, &bus->cores, list) {
438 if (bcma_is_core_needed_early(core->id.id))
439 bcma_register_core(bus, core);
440 }
441
442 /* Try to get SPROM */
443 err = bcma_sprom_get(bus);
444 if (err == -ENOENT) {
445 bcma_err(bus, "No SPROM available\n");
446 } else if (err)
447 bcma_err(bus, "Failed to get SPROM: %d\n", err);
448
449 /* Init CC core */
450 core = bcma_find_core(bus, bcma_cc_core_id(bus));
451 if (core) {
452 bus->drv_cc.core = core;
453 bcma_core_chipcommon_init(&bus->drv_cc);
454 }
455
456 /* Init CC core */
457 core = bcma_find_core(bus, BCMA_CORE_NS_CHIPCOMMON_B);
458 if (core) {
459 bus->drv_cc_b.core = core;
460 bcma_core_chipcommon_b_init(&bus->drv_cc_b);
461 }
462
463 /* Init MIPS core */
464 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
465 if (core) {
466 bus->drv_mips.core = core;
467 bcma_core_mips_init(&bus->drv_mips);
468 }
469
470 /* Init PCIE core */
471 core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0);
472 if (core) {
473 bus->drv_pci[0].core = core;
474 bcma_core_pci_init(&bus->drv_pci[0]);
475 }
476
477 /* Init PCIE core */
478 core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);
479 if (core) {
480 bus->drv_pci[1].core = core;
481 bcma_core_pci_init(&bus->drv_pci[1]);
482 }
483
484 /* Init PCIe Gen 2 core */
485 core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0);
486 if (core) {
487 bus->drv_pcie2.core = core;
488 bcma_core_pcie2_init(&bus->drv_pcie2);
489 }
490
491 /* Init GBIT MAC COMMON core */
492 core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
493 if (core) {
494 bus->drv_gmac_cmn.core = core;
495 bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
496 }
497
498 /* Register found cores */
499 bcma_register_devices(bus);
500
501 bcma_info(bus, "Bus registered\n");
502
503 return 0;
504}
505
506void bcma_bus_unregister(struct bcma_bus *bus)
507{
508 int err;
509
510 err = bcma_gpio_unregister(&bus->drv_cc);
511 if (err == -EBUSY)
512 bcma_err(bus, "Some GPIOs are still in use.\n");
513 else if (err)
514 bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);
515
516 bcma_core_chipcommon_b_free(&bus->drv_cc_b);
517
518 bcma_unregister_cores(bus);
519}
520
521/*
522 * This is a special version of bus registration function designed for SoCs.
523 * It scans bus and performs basic initialization of main cores only.
524 * Please note it requires memory allocation, however it won't try to sleep.
525 */
526int __init bcma_bus_early_register(struct bcma_bus *bus)
527{
528 int err;
529 struct bcma_device *core;
530
531 /* Scan for devices (cores) */
532 err = bcma_bus_scan(bus);
533 if (err) {
534 bcma_err(bus, "Failed to scan bus: %d\n", err);
535 return -1;
536 }
537
538 /* Early init CC core */
539 core = bcma_find_core(bus, bcma_cc_core_id(bus));
540 if (core) {
541 bus->drv_cc.core = core;
542 bcma_core_chipcommon_early_init(&bus->drv_cc);
543 }
544
545 /* Early init MIPS core */
546 core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
547 if (core) {
548 bus->drv_mips.core = core;
549 bcma_core_mips_early_init(&bus->drv_mips);
550 }
551
552 bcma_info(bus, "Early bus registered\n");
553
554 return 0;
555}
556
557#ifdef CONFIG_PM
558int bcma_bus_suspend(struct bcma_bus *bus)
559{
560 struct bcma_device *core;
561
562 list_for_each_entry(core, &bus->cores, list) {
563 struct device_driver *drv = core->dev.driver;
564 if (drv) {
565 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
566 if (adrv->suspend)
567 adrv->suspend(core);
568 }
569 }
570 return 0;
571}
572
573int bcma_bus_resume(struct bcma_bus *bus)
574{
575 struct bcma_device *core;
576
577 /* Init CC core */
578 if (bus->drv_cc.core) {
579 bus->drv_cc.setup_done = false;
580 bcma_core_chipcommon_init(&bus->drv_cc);
581 }
582
583 list_for_each_entry(core, &bus->cores, list) {
584 struct device_driver *drv = core->dev.driver;
585 if (drv) {
586 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
587 if (adrv->resume)
588 adrv->resume(core);
589 }
590 }
591
592 return 0;
593}
594#endif
595
596int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
597{
598 drv->drv.name = drv->name;
599 drv->drv.bus = &bcma_bus_type;
600 drv->drv.owner = owner;
601
602 return driver_register(&drv->drv);
603}
604EXPORT_SYMBOL_GPL(__bcma_driver_register);
605
606void bcma_driver_unregister(struct bcma_driver *drv)
607{
608 driver_unregister(&drv->drv);
609}
610EXPORT_SYMBOL_GPL(bcma_driver_unregister);
611
612static int bcma_bus_match(struct device *dev, struct device_driver *drv)
613{
614 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
615 struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
616 const struct bcma_device_id *cid = &core->id;
617 const struct bcma_device_id *did;
618
619 for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
620 if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
621 (did->id == cid->id || did->id == BCMA_ANY_ID) &&
622 (did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
623 (did->class == cid->class || did->class == BCMA_ANY_CLASS))
624 return 1;
625 }
626 return 0;
627}
628
629static int bcma_device_probe(struct device *dev)
630{
631 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
632 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
633 drv);
634 int err = 0;
635
636 get_device(dev);
637 if (adrv->probe)
638 err = adrv->probe(core);
639 if (err)
640 put_device(dev);
641
642 return err;
643}
644
645static int bcma_device_remove(struct device *dev)
646{
647 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
648 struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
649 drv);
650
651 if (adrv->remove)
652 adrv->remove(core);
653 put_device(dev);
654
655 return 0;
656}
657
658static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
659{
660 struct bcma_device *core = container_of(dev, struct bcma_device, dev);
661
662 return add_uevent_var(env,
663 "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
664 core->id.manuf, core->id.id,
665 core->id.rev, core->id.class);
666}
667
668static unsigned int bcma_bus_registered;
669
670/*
671 * If built-in, bus has to be registered early, before any driver calls
672 * bcma_driver_register.
673 * Otherwise registering driver would trigger BUG in driver_register.
674 */
675static int __init bcma_init_bus_register(void)
676{
677 int err;
678
679 if (bcma_bus_registered)
680 return 0;
681
682 err = bus_register(&bcma_bus_type);
683 if (!err)
684 bcma_bus_registered = 1;
685
686 return err;
687}
688#ifndef MODULE
689fs_initcall(bcma_init_bus_register);
690#endif
691
692/* Main initialization has to be done with SPI/mtd/NAND/SPROM available */
693static int __init bcma_modinit(void)
694{
695 int err;
696
697 err = bcma_init_bus_register();
698 if (err)
699 return err;
700
701 err = bcma_host_soc_register_driver();
702 if (err) {
703 pr_err("SoC host initialization failed\n");
704 err = 0;
705 }
706#ifdef CONFIG_BCMA_HOST_PCI
707 err = bcma_host_pci_init();
708 if (err) {
709 pr_err("PCI host initialization failed\n");
710 err = 0;
711 }
712#endif
713
714 return err;
715}
716module_init(bcma_modinit);
717
718static void __exit bcma_modexit(void)
719{
720#ifdef CONFIG_BCMA_HOST_PCI
721 bcma_host_pci_exit();
722#endif
723 bcma_host_soc_unregister_driver();
724 bus_unregister(&bcma_bus_type);
725}
726module_exit(bcma_modexit)