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Commit | Line | Data |
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8369ae33 RM |
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> |
53cd2fdb | 10 | #include <linux/mmc/sdio_func.h> |
d57ef3a6 | 11 | #include <linux/platform_device.h> |
53cd2fdb | 12 | #include <linux/pci.h> |
8369ae33 | 13 | #include <linux/bcma/bcma.h> |
eef72699 | 14 | #include <linux/slab.h> |
2101e533 | 15 | #include <linux/of_address.h> |
71783576 | 16 | #include <linux/of_irq.h> |
cae761b5 | 17 | #include <linux/of_platform.h> |
8369ae33 RM |
18 | |
19 | MODULE_DESCRIPTION("Broadcom's specific AMBA driver"); | |
20 | MODULE_LICENSE("GPL"); | |
21 | ||
8f9ada4f HM |
22 | /* contains the number the next bus should get. */ |
23 | static unsigned int bcma_bus_next_num = 0; | |
24 | ||
25 | /* bcma_buses_mutex locks the bcma_bus_next_num */ | |
26 | static DEFINE_MUTEX(bcma_buses_mutex); | |
27 | ||
8369ae33 RM |
28 | static int bcma_bus_match(struct device *dev, struct device_driver *drv); |
29 | static int bcma_device_probe(struct device *dev); | |
30 | static int bcma_device_remove(struct device *dev); | |
886b66ef | 31 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env); |
8369ae33 RM |
32 | |
33 | static 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 | } | |
fdcf4f81 GKH |
38 | static DEVICE_ATTR_RO(manuf); |
39 | ||
8369ae33 RM |
40 | static 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 | } | |
fdcf4f81 GKH |
45 | static DEVICE_ATTR_RO(id); |
46 | ||
8369ae33 RM |
47 | static 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 | } | |
fdcf4f81 GKH |
52 | static DEVICE_ATTR_RO(rev); |
53 | ||
8369ae33 RM |
54 | static 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 | } | |
fdcf4f81 GKH |
59 | static DEVICE_ATTR_RO(class); |
60 | ||
61 | static 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, | |
8369ae33 | 67 | }; |
fdcf4f81 | 68 | ATTRIBUTE_GROUPS(bcma_device); |
8369ae33 RM |
69 | |
70 | static struct bus_type bcma_bus_type = { | |
71 | .name = "bcma", | |
72 | .match = bcma_bus_match, | |
73 | .probe = bcma_device_probe, | |
74 | .remove = bcma_device_remove, | |
886b66ef | 75 | .uevent = bcma_device_uevent, |
fdcf4f81 | 76 | .dev_groups = bcma_device_groups, |
8369ae33 RM |
77 | }; |
78 | ||
6d5cfc9f RM |
79 | static 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 | ||
929a03ae HM |
86 | struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid, |
87 | u8 unit) | |
dfae7143 HM |
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 | } | |
b2395b8a | 97 | EXPORT_SYMBOL_GPL(bcma_find_core_unit); |
dfae7143 | 98 | |
88f9b65d RM |
99 | bool 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 | ||
8369ae33 RM |
118 | static void bcma_release_core_dev(struct device *dev) |
119 | { | |
120 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
ecd177c2 HM |
121 | if (core->io_addr) |
122 | iounmap(core->io_addr); | |
123 | if (core->io_wrap) | |
124 | iounmap(core->io_wrap); | |
8369ae33 RM |
125 | kfree(core); |
126 | } | |
127 | ||
37a7f876 RM |
128 | static 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 | ||
b1a4c9a1 | 139 | static struct device_node *bcma_of_find_child_device(struct device *parent, |
2101e533 HM |
140 | struct bcma_device *core) |
141 | { | |
142 | struct device_node *node; | |
143 | u64 size; | |
144 | const __be32 *reg; | |
145 | ||
b1a4c9a1 | 146 | if (!parent->of_node) |
2101e533 HM |
147 | return NULL; |
148 | ||
b1a4c9a1 | 149 | for_each_child_of_node(parent->of_node, node) { |
2101e533 HM |
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 | ||
b1a4c9a1 | 159 | static int bcma_of_irq_parse(struct device *parent, |
71783576 HM |
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 | ||
b1a4c9a1 | 172 | out_irq->np = parent->of_node; |
71783576 HM |
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 | ||
b1a4c9a1 | 180 | static unsigned int bcma_of_get_irq(struct device *parent, |
71783576 HM |
181 | struct bcma_device *core, int num) |
182 | { | |
183 | struct of_phandle_args out_irq; | |
184 | int ret; | |
185 | ||
b1a4c9a1 | 186 | if (!IS_ENABLED(CONFIG_OF_IRQ) || !parent->of_node) |
71783576 HM |
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 | ||
b1a4c9a1 | 199 | static void bcma_of_fill_device(struct device *parent, |
2101e533 HM |
200 | struct bcma_device *core) |
201 | { | |
202 | struct device_node *node; | |
203 | ||
c58d900c AB |
204 | if (!IS_ENABLED(CONFIG_OF_IRQ)) |
205 | return; | |
206 | ||
2101e533 HM |
207 | node = bcma_of_find_child_device(parent, core); |
208 | if (node) | |
209 | core->dev.of_node = node; | |
71783576 HM |
210 | |
211 | core->irq = bcma_of_get_irq(parent, core, 0); | |
defb893f AB |
212 | |
213 | of_dma_configure(&core->dev, node); | |
2101e533 | 214 | } |
2101e533 | 215 | |
85eb92e8 HM |
216 | unsigned 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 | } | |
71783576 | 229 | if (bus->host_pdev) |
b1a4c9a1 | 230 | return bcma_of_get_irq(&bus->host_pdev->dev, core, num); |
71783576 | 231 | return 0; |
85eb92e8 HM |
232 | case BCMA_HOSTTYPE_SDIO: |
233 | return 0; | |
234 | } | |
235 | ||
236 | return 0; | |
237 | } | |
238 | EXPORT_SYMBOL(bcma_core_irq); | |
239 | ||
ab54bc84 | 240 | void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core) |
6e094bd8 | 241 | { |
6e094bd8 RM |
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: | |
defb893f | 253 | if (IS_ENABLED(CONFIG_OF) && bus->host_pdev) { |
2101e533 HM |
254 | core->dma_dev = &bus->host_pdev->dev; |
255 | core->dev.parent = &bus->host_pdev->dev; | |
b1a4c9a1 RM |
256 | if (core->dev.parent) |
257 | bcma_of_fill_device(core->dev.parent, core); | |
2101e533 | 258 | } else { |
defb893f | 259 | core->dev.dma_mask = &core->dev.coherent_dma_mask; |
2101e533 HM |
260 | core->dma_dev = &core->dev; |
261 | } | |
6e094bd8 RM |
262 | break; |
263 | case BCMA_HOSTTYPE_SDIO: | |
264 | break; | |
265 | } | |
ab54bc84 RM |
266 | } |
267 | ||
53cd2fdb HM |
268 | struct device *bcma_bus_get_host_dev(struct bcma_bus *bus) |
269 | { | |
270 | switch (bus->hosttype) { | |
271 | case BCMA_HOSTTYPE_PCI: | |
272 | if (bus->host_pci) | |
273 | return &bus->host_pci->dev; | |
274 | else | |
275 | return NULL; | |
276 | case BCMA_HOSTTYPE_SOC: | |
277 | if (bus->host_pdev) | |
278 | return &bus->host_pdev->dev; | |
279 | else | |
280 | return NULL; | |
281 | case BCMA_HOSTTYPE_SDIO: | |
282 | if (bus->host_sdio) | |
283 | return &bus->host_sdio->dev; | |
284 | else | |
285 | return NULL; | |
286 | } | |
287 | return NULL; | |
288 | } | |
289 | ||
799038ea RM |
290 | void bcma_init_bus(struct bcma_bus *bus) |
291 | { | |
292 | mutex_lock(&bcma_buses_mutex); | |
293 | bus->num = bcma_bus_next_num++; | |
294 | mutex_unlock(&bcma_buses_mutex); | |
295 | ||
296 | INIT_LIST_HEAD(&bus->cores); | |
297 | bus->nr_cores = 0; | |
298 | ||
299 | bcma_detect_chip(bus); | |
300 | } | |
301 | ||
ab54bc84 RM |
302 | static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core) |
303 | { | |
304 | int err; | |
6e094bd8 RM |
305 | |
306 | err = device_register(&core->dev); | |
307 | if (err) { | |
308 | bcma_err(bus, "Could not register dev for core 0x%03X\n", | |
309 | core->id.id); | |
310 | put_device(&core->dev); | |
311 | return; | |
312 | } | |
313 | core->dev_registered = true; | |
314 | } | |
315 | ||
316 | static int bcma_register_devices(struct bcma_bus *bus) | |
8369ae33 RM |
317 | { |
318 | struct bcma_device *core; | |
6e094bd8 | 319 | int err; |
8369ae33 RM |
320 | |
321 | list_for_each_entry(core, &bus->cores, list) { | |
322 | /* We support that cores ourself */ | |
323 | switch (core->id.id) { | |
6d5cfc9f | 324 | case BCMA_CORE_4706_CHIPCOMMON: |
8369ae33 | 325 | case BCMA_CORE_CHIPCOMMON: |
1716bcf3 | 326 | case BCMA_CORE_NS_CHIPCOMMON_B: |
8369ae33 RM |
327 | case BCMA_CORE_PCI: |
328 | case BCMA_CORE_PCIE: | |
f473832f | 329 | case BCMA_CORE_PCIE2: |
21e0534a | 330 | case BCMA_CORE_MIPS_74K: |
e1ac4b40 | 331 | case BCMA_CORE_4706_MAC_GBIT_COMMON: |
8369ae33 RM |
332 | continue; |
333 | } | |
334 | ||
37a7f876 RM |
335 | /* Early cores were already registered */ |
336 | if (bcma_is_core_needed_early(core->id.id)) | |
337 | continue; | |
338 | ||
10419d08 RM |
339 | /* Only first GMAC core on BCM4706 is connected and working */ |
340 | if (core->id.id == BCMA_CORE_4706_MAC_GBIT && | |
341 | core->core_unit > 0) | |
342 | continue; | |
343 | ||
6e094bd8 | 344 | bcma_register_core(bus, core); |
8369ae33 RM |
345 | } |
346 | ||
d6a3b51a | 347 | #ifdef CONFIG_BCMA_PFLASH |
73e4dbe4 RM |
348 | if (bus->drv_cc.pflash.present) { |
349 | err = platform_device_register(&bcma_pflash_dev); | |
350 | if (err) | |
351 | bcma_err(bus, "Error registering parallel flash\n"); | |
352 | } | |
353 | #endif | |
354 | ||
d57ef3a6 RM |
355 | #ifdef CONFIG_BCMA_SFLASH |
356 | if (bus->drv_cc.sflash.present) { | |
357 | err = platform_device_register(&bcma_sflash_dev); | |
358 | if (err) | |
359 | bcma_err(bus, "Error registering serial flash\n"); | |
360 | } | |
361 | #endif | |
362 | ||
371a0044 RM |
363 | #ifdef CONFIG_BCMA_NFLASH |
364 | if (bus->drv_cc.nflash.present) { | |
365 | err = platform_device_register(&bcma_nflash_dev); | |
366 | if (err) | |
367 | bcma_err(bus, "Error registering NAND flash\n"); | |
368 | } | |
369 | #endif | |
cf0936b0 HM |
370 | err = bcma_gpio_init(&bus->drv_cc); |
371 | if (err == -ENOTSUPP) | |
372 | bcma_debug(bus, "GPIO driver not activated\n"); | |
373 | else if (err) | |
374 | bcma_err(bus, "Error registering GPIO driver: %i\n", err); | |
371a0044 | 375 | |
a4855f39 HM |
376 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) { |
377 | err = bcma_chipco_watchdog_register(&bus->drv_cc); | |
378 | if (err) | |
379 | bcma_err(bus, "Error registering watchdog driver\n"); | |
380 | } | |
381 | ||
8369ae33 RM |
382 | return 0; |
383 | } | |
384 | ||
9b6cc9a8 | 385 | void bcma_unregister_cores(struct bcma_bus *bus) |
8369ae33 | 386 | { |
1fffa905 | 387 | struct bcma_device *core, *tmp; |
8369ae33 | 388 | |
1fffa905 | 389 | list_for_each_entry_safe(core, tmp, &bus->cores, list) { |
17fbaa6e RM |
390 | if (!core->dev_registered) |
391 | continue; | |
1fffa905 | 392 | list_del(&core->list); |
17fbaa6e | 393 | device_unregister(&core->dev); |
8369ae33 | 394 | } |
a4855f39 HM |
395 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) |
396 | platform_device_unregister(bus->drv_cc.watchdog); | |
17fbaa6e RM |
397 | |
398 | /* Now noone uses internally-handled cores, we can free them */ | |
399 | list_for_each_entry_safe(core, tmp, &bus->cores, list) { | |
400 | list_del(&core->list); | |
401 | kfree(core); | |
402 | } | |
8369ae33 RM |
403 | } |
404 | ||
0f58a01d | 405 | int bcma_bus_register(struct bcma_bus *bus) |
8369ae33 RM |
406 | { |
407 | int err; | |
408 | struct bcma_device *core; | |
53cd2fdb | 409 | struct device *dev; |
8369ae33 RM |
410 | |
411 | /* Scan for devices (cores) */ | |
412 | err = bcma_bus_scan(bus); | |
413 | if (err) { | |
3d9d8af3 | 414 | bcma_err(bus, "Failed to scan: %d\n", err); |
1cabf7db | 415 | return err; |
8369ae33 RM |
416 | } |
417 | ||
30cfb023 HM |
418 | /* Early init CC core */ |
419 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); | |
420 | if (core) { | |
421 | bus->drv_cc.core = core; | |
422 | bcma_core_chipcommon_early_init(&bus->drv_cc); | |
423 | } | |
b504075f RM |
424 | |
425 | /* Early init PCIE core */ | |
426 | core = bcma_find_core(bus, BCMA_CORE_PCIE); | |
427 | if (core) { | |
428 | bus->drv_pci[0].core = core; | |
429 | bcma_core_pci_early_init(&bus->drv_pci[0]); | |
430 | } | |
cae761b5 | 431 | |
53cd2fdb | 432 | dev = bcma_bus_get_host_dev(bus); |
69b5f4da HM |
433 | if (dev) { |
434 | of_platform_default_populate(dev->of_node, NULL, dev); | |
cae761b5 | 435 | } |
30cfb023 | 436 | |
37a7f876 RM |
437 | /* Cores providing flash access go before SPROM init */ |
438 | list_for_each_entry(core, &bus->cores, list) { | |
439 | if (bcma_is_core_needed_early(core->id.id)) | |
440 | bcma_register_core(bus, core); | |
441 | } | |
442 | ||
30cfb023 HM |
443 | /* Try to get SPROM */ |
444 | err = bcma_sprom_get(bus); | |
445 | if (err == -ENOENT) { | |
446 | bcma_err(bus, "No SPROM available\n"); | |
447 | } else if (err) | |
448 | bcma_err(bus, "Failed to get SPROM: %d\n", err); | |
449 | ||
8369ae33 | 450 | /* Init CC core */ |
6d5cfc9f | 451 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
8369ae33 RM |
452 | if (core) { |
453 | bus->drv_cc.core = core; | |
454 | bcma_core_chipcommon_init(&bus->drv_cc); | |
455 | } | |
456 | ||
1716bcf3 HM |
457 | /* Init CC core */ |
458 | core = bcma_find_core(bus, BCMA_CORE_NS_CHIPCOMMON_B); | |
459 | if (core) { | |
460 | bus->drv_cc_b.core = core; | |
461 | bcma_core_chipcommon_b_init(&bus->drv_cc_b); | |
462 | } | |
463 | ||
21e0534a HM |
464 | /* Init MIPS core */ |
465 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
466 | if (core) { | |
467 | bus->drv_mips.core = core; | |
468 | bcma_core_mips_init(&bus->drv_mips); | |
469 | } | |
470 | ||
8369ae33 | 471 | /* Init PCIE core */ |
dfae7143 HM |
472 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0); |
473 | if (core) { | |
474 | bus->drv_pci[0].core = core; | |
475 | bcma_core_pci_init(&bus->drv_pci[0]); | |
476 | } | |
477 | ||
478 | /* Init PCIE core */ | |
479 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1); | |
8369ae33 | 480 | if (core) { |
dfae7143 HM |
481 | bus->drv_pci[1].core = core; |
482 | bcma_core_pci_init(&bus->drv_pci[1]); | |
8369ae33 RM |
483 | } |
484 | ||
f473832f RM |
485 | /* Init PCIe Gen 2 core */ |
486 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0); | |
487 | if (core) { | |
488 | bus->drv_pcie2.core = core; | |
489 | bcma_core_pcie2_init(&bus->drv_pcie2); | |
490 | } | |
491 | ||
e1ac4b40 RM |
492 | /* Init GBIT MAC COMMON core */ |
493 | core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
494 | if (core) { | |
495 | bus->drv_gmac_cmn.core = core; | |
496 | bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn); | |
497 | } | |
498 | ||
8369ae33 | 499 | /* Register found cores */ |
6e094bd8 | 500 | bcma_register_devices(bus); |
8369ae33 | 501 | |
3d9d8af3 | 502 | bcma_info(bus, "Bus registered\n"); |
8369ae33 RM |
503 | |
504 | return 0; | |
505 | } | |
8369ae33 RM |
506 | |
507 | void bcma_bus_unregister(struct bcma_bus *bus) | |
508 | { | |
c50ae947 HM |
509 | int err; |
510 | ||
511 | err = bcma_gpio_unregister(&bus->drv_cc); | |
512 | if (err == -EBUSY) | |
513 | bcma_err(bus, "Some GPIOs are still in use.\n"); | |
514 | else if (err) | |
515 | bcma_err(bus, "Can not unregister GPIO driver: %i\n", err); | |
ee915927 | 516 | |
1716bcf3 HM |
517 | bcma_core_chipcommon_b_free(&bus->drv_cc_b); |
518 | ||
8369ae33 RM |
519 | bcma_unregister_cores(bus); |
520 | } | |
8369ae33 | 521 | |
c5ed1df7 RM |
522 | /* |
523 | * This is a special version of bus registration function designed for SoCs. | |
524 | * It scans bus and performs basic initialization of main cores only. | |
525 | * Please note it requires memory allocation, however it won't try to sleep. | |
526 | */ | |
527 | int __init bcma_bus_early_register(struct bcma_bus *bus) | |
517f43e5 HM |
528 | { |
529 | int err; | |
530 | struct bcma_device *core; | |
517f43e5 | 531 | |
c5ed1df7 RM |
532 | /* Scan for devices (cores) */ |
533 | err = bcma_bus_scan(bus); | |
517f43e5 | 534 | if (err) { |
c5ed1df7 | 535 | bcma_err(bus, "Failed to scan bus: %d\n", err); |
517f43e5 HM |
536 | return -1; |
537 | } | |
538 | ||
49655bb8 | 539 | /* Early init CC core */ |
6d5cfc9f | 540 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
517f43e5 HM |
541 | if (core) { |
542 | bus->drv_cc.core = core; | |
49655bb8 | 543 | bcma_core_chipcommon_early_init(&bus->drv_cc); |
517f43e5 HM |
544 | } |
545 | ||
49655bb8 | 546 | /* Early init MIPS core */ |
21e0534a HM |
547 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); |
548 | if (core) { | |
549 | bus->drv_mips.core = core; | |
49655bb8 | 550 | bcma_core_mips_early_init(&bus->drv_mips); |
21e0534a HM |
551 | } |
552 | ||
3d9d8af3 | 553 | bcma_info(bus, "Early bus registered\n"); |
517f43e5 HM |
554 | |
555 | return 0; | |
556 | } | |
557 | ||
775ab521 | 558 | #ifdef CONFIG_PM |
685a4ef0 LT |
559 | int bcma_bus_suspend(struct bcma_bus *bus) |
560 | { | |
7d5869e7 LT |
561 | struct bcma_device *core; |
562 | ||
563 | list_for_each_entry(core, &bus->cores, list) { | |
564 | struct device_driver *drv = core->dev.driver; | |
565 | if (drv) { | |
566 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
567 | if (adrv->suspend) | |
568 | adrv->suspend(core); | |
569 | } | |
570 | } | |
685a4ef0 LT |
571 | return 0; |
572 | } | |
573 | ||
775ab521 RM |
574 | int bcma_bus_resume(struct bcma_bus *bus) |
575 | { | |
576 | struct bcma_device *core; | |
577 | ||
578 | /* Init CC core */ | |
6d5cfc9f | 579 | if (bus->drv_cc.core) { |
775ab521 RM |
580 | bus->drv_cc.setup_done = false; |
581 | bcma_core_chipcommon_init(&bus->drv_cc); | |
582 | } | |
583 | ||
7d5869e7 LT |
584 | list_for_each_entry(core, &bus->cores, list) { |
585 | struct device_driver *drv = core->dev.driver; | |
586 | if (drv) { | |
587 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
588 | if (adrv->resume) | |
589 | adrv->resume(core); | |
590 | } | |
591 | } | |
592 | ||
775ab521 RM |
593 | return 0; |
594 | } | |
595 | #endif | |
596 | ||
8369ae33 RM |
597 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
598 | { | |
599 | drv->drv.name = drv->name; | |
600 | drv->drv.bus = &bcma_bus_type; | |
601 | drv->drv.owner = owner; | |
602 | ||
603 | return driver_register(&drv->drv); | |
604 | } | |
605 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
606 | ||
607 | void bcma_driver_unregister(struct bcma_driver *drv) | |
608 | { | |
609 | driver_unregister(&drv->drv); | |
610 | } | |
611 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
612 | ||
613 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
614 | { | |
615 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
616 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
617 | const struct bcma_device_id *cid = &core->id; | |
618 | const struct bcma_device_id *did; | |
619 | ||
620 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
621 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
622 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
623 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
624 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
625 | return 1; | |
626 | } | |
627 | return 0; | |
628 | } | |
629 | ||
630 | static int bcma_device_probe(struct device *dev) | |
631 | { | |
632 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
633 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
634 | drv); | |
635 | int err = 0; | |
636 | ||
a971df0b | 637 | get_device(dev); |
8369ae33 RM |
638 | if (adrv->probe) |
639 | err = adrv->probe(core); | |
a971df0b RM |
640 | if (err) |
641 | put_device(dev); | |
8369ae33 RM |
642 | |
643 | return err; | |
644 | } | |
645 | ||
646 | static int bcma_device_remove(struct device *dev) | |
647 | { | |
648 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
649 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
650 | drv); | |
651 | ||
652 | if (adrv->remove) | |
653 | adrv->remove(core); | |
a971df0b | 654 | put_device(dev); |
8369ae33 RM |
655 | |
656 | return 0; | |
657 | } | |
658 | ||
886b66ef DW |
659 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
660 | { | |
661 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
662 | ||
663 | return add_uevent_var(env, | |
664 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
665 | core->id.manuf, core->id.id, | |
666 | core->id.rev, core->id.class); | |
667 | } | |
668 | ||
0510931e RM |
669 | static unsigned int bcma_bus_registered; |
670 | ||
671 | /* | |
672 | * If built-in, bus has to be registered early, before any driver calls | |
673 | * bcma_driver_register. | |
674 | * Otherwise registering driver would trigger BUG in driver_register. | |
675 | */ | |
676 | static int __init bcma_init_bus_register(void) | |
8369ae33 RM |
677 | { |
678 | int err; | |
679 | ||
0510931e RM |
680 | if (bcma_bus_registered) |
681 | return 0; | |
682 | ||
8369ae33 | 683 | err = bus_register(&bcma_bus_type); |
0510931e RM |
684 | if (!err) |
685 | bcma_bus_registered = 1; | |
686 | ||
687 | return err; | |
688 | } | |
689 | #ifndef MODULE | |
690 | fs_initcall(bcma_init_bus_register); | |
691 | #endif | |
692 | ||
693 | /* Main initialization has to be done with SPI/mtd/NAND/SPROM available */ | |
694 | static int __init bcma_modinit(void) | |
695 | { | |
696 | int err; | |
697 | ||
698 | err = bcma_init_bus_register(); | |
8369ae33 RM |
699 | if (err) |
700 | return err; | |
701 | ||
2101e533 HM |
702 | err = bcma_host_soc_register_driver(); |
703 | if (err) { | |
704 | pr_err("SoC host initialization failed\n"); | |
705 | err = 0; | |
706 | } | |
8369ae33 RM |
707 | #ifdef CONFIG_BCMA_HOST_PCI |
708 | err = bcma_host_pci_init(); | |
709 | if (err) { | |
710 | pr_err("PCI host initialization failed\n"); | |
711 | err = 0; | |
712 | } | |
713 | #endif | |
714 | ||
715 | return err; | |
716 | } | |
0510931e | 717 | module_init(bcma_modinit); |
8369ae33 RM |
718 | |
719 | static void __exit bcma_modexit(void) | |
720 | { | |
721 | #ifdef CONFIG_BCMA_HOST_PCI | |
722 | bcma_host_pci_exit(); | |
723 | #endif | |
2101e533 | 724 | bcma_host_soc_unregister_driver(); |
8369ae33 RM |
725 | bus_unregister(&bcma_bus_type); |
726 | } | |
727 | module_exit(bcma_modexit) |