Commit | Line | Data |
---|---|---|
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 | ||
204 | node = bcma_of_find_child_device(parent, core); | |
205 | if (node) | |
206 | core->dev.of_node = node; | |
71783576 HM |
207 | |
208 | core->irq = bcma_of_get_irq(parent, core, 0); | |
defb893f AB |
209 | |
210 | of_dma_configure(&core->dev, node); | |
2101e533 | 211 | } |
2101e533 | 212 | |
85eb92e8 HM |
213 | unsigned int bcma_core_irq(struct bcma_device *core, int num) |
214 | { | |
215 | struct bcma_bus *bus = core->bus; | |
216 | unsigned int mips_irq; | |
217 | ||
218 | switch (bus->hosttype) { | |
219 | case BCMA_HOSTTYPE_PCI: | |
220 | return bus->host_pci->irq; | |
221 | case BCMA_HOSTTYPE_SOC: | |
222 | if (bus->drv_mips.core && num == 0) { | |
223 | mips_irq = bcma_core_mips_irq(core); | |
224 | return mips_irq <= 4 ? mips_irq + 2 : 0; | |
225 | } | |
71783576 | 226 | if (bus->host_pdev) |
b1a4c9a1 | 227 | return bcma_of_get_irq(&bus->host_pdev->dev, core, num); |
71783576 | 228 | return 0; |
85eb92e8 HM |
229 | case BCMA_HOSTTYPE_SDIO: |
230 | return 0; | |
231 | } | |
232 | ||
233 | return 0; | |
234 | } | |
235 | EXPORT_SYMBOL(bcma_core_irq); | |
236 | ||
ab54bc84 | 237 | void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core) |
6e094bd8 | 238 | { |
6e094bd8 RM |
239 | core->dev.release = bcma_release_core_dev; |
240 | core->dev.bus = &bcma_bus_type; | |
241 | dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index); | |
5e48a4cd | 242 | core->dev.parent = bcma_bus_get_host_dev(bus); |
f825f6ed RM |
243 | if (core->dev.parent) |
244 | bcma_of_fill_device(core->dev.parent, core); | |
6e094bd8 RM |
245 | |
246 | switch (bus->hosttype) { | |
247 | case BCMA_HOSTTYPE_PCI: | |
6e094bd8 RM |
248 | core->dma_dev = &bus->host_pci->dev; |
249 | core->irq = bus->host_pci->irq; | |
250 | break; | |
251 | case BCMA_HOSTTYPE_SOC: | |
defb893f | 252 | if (IS_ENABLED(CONFIG_OF) && bus->host_pdev) { |
2101e533 | 253 | core->dma_dev = &bus->host_pdev->dev; |
2101e533 | 254 | } else { |
defb893f | 255 | core->dev.dma_mask = &core->dev.coherent_dma_mask; |
2101e533 HM |
256 | core->dma_dev = &core->dev; |
257 | } | |
6e094bd8 RM |
258 | break; |
259 | case BCMA_HOSTTYPE_SDIO: | |
260 | break; | |
261 | } | |
ab54bc84 RM |
262 | } |
263 | ||
53cd2fdb HM |
264 | struct device *bcma_bus_get_host_dev(struct bcma_bus *bus) |
265 | { | |
266 | switch (bus->hosttype) { | |
267 | case BCMA_HOSTTYPE_PCI: | |
268 | if (bus->host_pci) | |
269 | return &bus->host_pci->dev; | |
270 | else | |
271 | return NULL; | |
272 | case BCMA_HOSTTYPE_SOC: | |
273 | if (bus->host_pdev) | |
274 | return &bus->host_pdev->dev; | |
275 | else | |
276 | return NULL; | |
277 | case BCMA_HOSTTYPE_SDIO: | |
278 | if (bus->host_sdio) | |
279 | return &bus->host_sdio->dev; | |
280 | else | |
281 | return NULL; | |
282 | } | |
283 | return NULL; | |
284 | } | |
285 | ||
799038ea RM |
286 | void bcma_init_bus(struct bcma_bus *bus) |
287 | { | |
288 | mutex_lock(&bcma_buses_mutex); | |
289 | bus->num = bcma_bus_next_num++; | |
290 | mutex_unlock(&bcma_buses_mutex); | |
291 | ||
292 | INIT_LIST_HEAD(&bus->cores); | |
293 | bus->nr_cores = 0; | |
294 | ||
295 | bcma_detect_chip(bus); | |
296 | } | |
297 | ||
ab54bc84 RM |
298 | static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core) |
299 | { | |
300 | int err; | |
6e094bd8 RM |
301 | |
302 | err = device_register(&core->dev); | |
303 | if (err) { | |
304 | bcma_err(bus, "Could not register dev for core 0x%03X\n", | |
305 | core->id.id); | |
306 | put_device(&core->dev); | |
307 | return; | |
308 | } | |
309 | core->dev_registered = true; | |
310 | } | |
311 | ||
312 | static int bcma_register_devices(struct bcma_bus *bus) | |
8369ae33 RM |
313 | { |
314 | struct bcma_device *core; | |
6e094bd8 | 315 | int err; |
8369ae33 RM |
316 | |
317 | list_for_each_entry(core, &bus->cores, list) { | |
318 | /* We support that cores ourself */ | |
319 | switch (core->id.id) { | |
6d5cfc9f | 320 | case BCMA_CORE_4706_CHIPCOMMON: |
8369ae33 | 321 | case BCMA_CORE_CHIPCOMMON: |
1716bcf3 | 322 | case BCMA_CORE_NS_CHIPCOMMON_B: |
8369ae33 RM |
323 | case BCMA_CORE_PCI: |
324 | case BCMA_CORE_PCIE: | |
f473832f | 325 | case BCMA_CORE_PCIE2: |
21e0534a | 326 | case BCMA_CORE_MIPS_74K: |
e1ac4b40 | 327 | case BCMA_CORE_4706_MAC_GBIT_COMMON: |
8369ae33 RM |
328 | continue; |
329 | } | |
330 | ||
37a7f876 RM |
331 | /* Early cores were already registered */ |
332 | if (bcma_is_core_needed_early(core->id.id)) | |
333 | continue; | |
334 | ||
10419d08 RM |
335 | /* Only first GMAC core on BCM4706 is connected and working */ |
336 | if (core->id.id == BCMA_CORE_4706_MAC_GBIT && | |
337 | core->core_unit > 0) | |
338 | continue; | |
339 | ||
6e094bd8 | 340 | bcma_register_core(bus, core); |
8369ae33 RM |
341 | } |
342 | ||
d6a3b51a | 343 | #ifdef CONFIG_BCMA_PFLASH |
73e4dbe4 RM |
344 | if (bus->drv_cc.pflash.present) { |
345 | err = platform_device_register(&bcma_pflash_dev); | |
346 | if (err) | |
347 | bcma_err(bus, "Error registering parallel flash\n"); | |
348 | } | |
349 | #endif | |
350 | ||
d57ef3a6 RM |
351 | #ifdef CONFIG_BCMA_SFLASH |
352 | if (bus->drv_cc.sflash.present) { | |
353 | err = platform_device_register(&bcma_sflash_dev); | |
354 | if (err) | |
355 | bcma_err(bus, "Error registering serial flash\n"); | |
356 | } | |
357 | #endif | |
358 | ||
371a0044 RM |
359 | #ifdef CONFIG_BCMA_NFLASH |
360 | if (bus->drv_cc.nflash.present) { | |
361 | err = platform_device_register(&bcma_nflash_dev); | |
362 | if (err) | |
363 | bcma_err(bus, "Error registering NAND flash\n"); | |
364 | } | |
365 | #endif | |
cf0936b0 HM |
366 | err = bcma_gpio_init(&bus->drv_cc); |
367 | if (err == -ENOTSUPP) | |
368 | bcma_debug(bus, "GPIO driver not activated\n"); | |
369 | else if (err) | |
370 | bcma_err(bus, "Error registering GPIO driver: %i\n", err); | |
371a0044 | 371 | |
a4855f39 HM |
372 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) { |
373 | err = bcma_chipco_watchdog_register(&bus->drv_cc); | |
374 | if (err) | |
375 | bcma_err(bus, "Error registering watchdog driver\n"); | |
376 | } | |
377 | ||
8369ae33 RM |
378 | return 0; |
379 | } | |
380 | ||
9b6cc9a8 | 381 | void bcma_unregister_cores(struct bcma_bus *bus) |
8369ae33 | 382 | { |
1fffa905 | 383 | struct bcma_device *core, *tmp; |
8369ae33 | 384 | |
1fffa905 | 385 | list_for_each_entry_safe(core, tmp, &bus->cores, list) { |
17fbaa6e RM |
386 | if (!core->dev_registered) |
387 | continue; | |
1fffa905 | 388 | list_del(&core->list); |
17fbaa6e | 389 | device_unregister(&core->dev); |
8369ae33 | 390 | } |
a4855f39 HM |
391 | if (bus->hosttype == BCMA_HOSTTYPE_SOC) |
392 | platform_device_unregister(bus->drv_cc.watchdog); | |
17fbaa6e RM |
393 | |
394 | /* Now noone uses internally-handled cores, we can free them */ | |
395 | list_for_each_entry_safe(core, tmp, &bus->cores, list) { | |
396 | list_del(&core->list); | |
397 | kfree(core); | |
398 | } | |
8369ae33 RM |
399 | } |
400 | ||
0f58a01d | 401 | int bcma_bus_register(struct bcma_bus *bus) |
8369ae33 RM |
402 | { |
403 | int err; | |
404 | struct bcma_device *core; | |
53cd2fdb | 405 | struct device *dev; |
8369ae33 RM |
406 | |
407 | /* Scan for devices (cores) */ | |
408 | err = bcma_bus_scan(bus); | |
409 | if (err) { | |
3d9d8af3 | 410 | bcma_err(bus, "Failed to scan: %d\n", err); |
1cabf7db | 411 | return err; |
8369ae33 RM |
412 | } |
413 | ||
30cfb023 HM |
414 | /* Early init CC core */ |
415 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); | |
416 | if (core) { | |
417 | bus->drv_cc.core = core; | |
418 | bcma_core_chipcommon_early_init(&bus->drv_cc); | |
419 | } | |
b504075f RM |
420 | |
421 | /* Early init PCIE core */ | |
422 | core = bcma_find_core(bus, BCMA_CORE_PCIE); | |
423 | if (core) { | |
424 | bus->drv_pci[0].core = core; | |
425 | bcma_core_pci_early_init(&bus->drv_pci[0]); | |
426 | } | |
cae761b5 | 427 | |
53cd2fdb | 428 | dev = bcma_bus_get_host_dev(bus); |
69b5f4da HM |
429 | if (dev) { |
430 | of_platform_default_populate(dev->of_node, NULL, dev); | |
cae761b5 | 431 | } |
30cfb023 | 432 | |
37a7f876 RM |
433 | /* Cores providing flash access go before SPROM init */ |
434 | list_for_each_entry(core, &bus->cores, list) { | |
435 | if (bcma_is_core_needed_early(core->id.id)) | |
436 | bcma_register_core(bus, core); | |
437 | } | |
438 | ||
30cfb023 HM |
439 | /* Try to get SPROM */ |
440 | err = bcma_sprom_get(bus); | |
441 | if (err == -ENOENT) { | |
442 | bcma_err(bus, "No SPROM available\n"); | |
443 | } else if (err) | |
444 | bcma_err(bus, "Failed to get SPROM: %d\n", err); | |
445 | ||
8369ae33 | 446 | /* Init CC core */ |
6d5cfc9f | 447 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
8369ae33 RM |
448 | if (core) { |
449 | bus->drv_cc.core = core; | |
450 | bcma_core_chipcommon_init(&bus->drv_cc); | |
451 | } | |
452 | ||
1716bcf3 HM |
453 | /* Init CC core */ |
454 | core = bcma_find_core(bus, BCMA_CORE_NS_CHIPCOMMON_B); | |
455 | if (core) { | |
456 | bus->drv_cc_b.core = core; | |
457 | bcma_core_chipcommon_b_init(&bus->drv_cc_b); | |
458 | } | |
459 | ||
21e0534a HM |
460 | /* Init MIPS core */ |
461 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); | |
462 | if (core) { | |
463 | bus->drv_mips.core = core; | |
464 | bcma_core_mips_init(&bus->drv_mips); | |
465 | } | |
466 | ||
8369ae33 | 467 | /* Init PCIE core */ |
dfae7143 HM |
468 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0); |
469 | if (core) { | |
470 | bus->drv_pci[0].core = core; | |
471 | bcma_core_pci_init(&bus->drv_pci[0]); | |
472 | } | |
473 | ||
474 | /* Init PCIE core */ | |
475 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1); | |
8369ae33 | 476 | if (core) { |
dfae7143 HM |
477 | bus->drv_pci[1].core = core; |
478 | bcma_core_pci_init(&bus->drv_pci[1]); | |
8369ae33 RM |
479 | } |
480 | ||
f473832f RM |
481 | /* Init PCIe Gen 2 core */ |
482 | core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0); | |
483 | if (core) { | |
484 | bus->drv_pcie2.core = core; | |
485 | bcma_core_pcie2_init(&bus->drv_pcie2); | |
486 | } | |
487 | ||
e1ac4b40 RM |
488 | /* Init GBIT MAC COMMON core */ |
489 | core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON); | |
490 | if (core) { | |
491 | bus->drv_gmac_cmn.core = core; | |
492 | bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn); | |
493 | } | |
494 | ||
8369ae33 | 495 | /* Register found cores */ |
6e094bd8 | 496 | bcma_register_devices(bus); |
8369ae33 | 497 | |
3d9d8af3 | 498 | bcma_info(bus, "Bus registered\n"); |
8369ae33 RM |
499 | |
500 | return 0; | |
501 | } | |
8369ae33 RM |
502 | |
503 | void bcma_bus_unregister(struct bcma_bus *bus) | |
504 | { | |
c50ae947 HM |
505 | int err; |
506 | ||
507 | err = bcma_gpio_unregister(&bus->drv_cc); | |
508 | if (err == -EBUSY) | |
509 | bcma_err(bus, "Some GPIOs are still in use.\n"); | |
510 | else if (err) | |
511 | bcma_err(bus, "Can not unregister GPIO driver: %i\n", err); | |
ee915927 | 512 | |
1716bcf3 HM |
513 | bcma_core_chipcommon_b_free(&bus->drv_cc_b); |
514 | ||
8369ae33 RM |
515 | bcma_unregister_cores(bus); |
516 | } | |
8369ae33 | 517 | |
c5ed1df7 RM |
518 | /* |
519 | * This is a special version of bus registration function designed for SoCs. | |
520 | * It scans bus and performs basic initialization of main cores only. | |
521 | * Please note it requires memory allocation, however it won't try to sleep. | |
522 | */ | |
523 | int __init bcma_bus_early_register(struct bcma_bus *bus) | |
517f43e5 HM |
524 | { |
525 | int err; | |
526 | struct bcma_device *core; | |
517f43e5 | 527 | |
c5ed1df7 RM |
528 | /* Scan for devices (cores) */ |
529 | err = bcma_bus_scan(bus); | |
517f43e5 | 530 | if (err) { |
c5ed1df7 | 531 | bcma_err(bus, "Failed to scan bus: %d\n", err); |
517f43e5 HM |
532 | return -1; |
533 | } | |
534 | ||
49655bb8 | 535 | /* Early init CC core */ |
6d5cfc9f | 536 | core = bcma_find_core(bus, bcma_cc_core_id(bus)); |
517f43e5 HM |
537 | if (core) { |
538 | bus->drv_cc.core = core; | |
49655bb8 | 539 | bcma_core_chipcommon_early_init(&bus->drv_cc); |
517f43e5 HM |
540 | } |
541 | ||
49655bb8 | 542 | /* Early init MIPS core */ |
21e0534a HM |
543 | core = bcma_find_core(bus, BCMA_CORE_MIPS_74K); |
544 | if (core) { | |
545 | bus->drv_mips.core = core; | |
49655bb8 | 546 | bcma_core_mips_early_init(&bus->drv_mips); |
21e0534a HM |
547 | } |
548 | ||
3d9d8af3 | 549 | bcma_info(bus, "Early bus registered\n"); |
517f43e5 HM |
550 | |
551 | return 0; | |
552 | } | |
553 | ||
775ab521 | 554 | #ifdef CONFIG_PM |
685a4ef0 LT |
555 | int bcma_bus_suspend(struct bcma_bus *bus) |
556 | { | |
7d5869e7 LT |
557 | struct bcma_device *core; |
558 | ||
559 | list_for_each_entry(core, &bus->cores, list) { | |
560 | struct device_driver *drv = core->dev.driver; | |
561 | if (drv) { | |
562 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
563 | if (adrv->suspend) | |
564 | adrv->suspend(core); | |
565 | } | |
566 | } | |
685a4ef0 LT |
567 | return 0; |
568 | } | |
569 | ||
775ab521 RM |
570 | int bcma_bus_resume(struct bcma_bus *bus) |
571 | { | |
572 | struct bcma_device *core; | |
573 | ||
574 | /* Init CC core */ | |
6d5cfc9f | 575 | if (bus->drv_cc.core) { |
775ab521 RM |
576 | bus->drv_cc.setup_done = false; |
577 | bcma_core_chipcommon_init(&bus->drv_cc); | |
578 | } | |
579 | ||
7d5869e7 LT |
580 | list_for_each_entry(core, &bus->cores, list) { |
581 | struct device_driver *drv = core->dev.driver; | |
582 | if (drv) { | |
583 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
584 | if (adrv->resume) | |
585 | adrv->resume(core); | |
586 | } | |
587 | } | |
588 | ||
775ab521 RM |
589 | return 0; |
590 | } | |
591 | #endif | |
592 | ||
8369ae33 RM |
593 | int __bcma_driver_register(struct bcma_driver *drv, struct module *owner) |
594 | { | |
595 | drv->drv.name = drv->name; | |
596 | drv->drv.bus = &bcma_bus_type; | |
597 | drv->drv.owner = owner; | |
598 | ||
599 | return driver_register(&drv->drv); | |
600 | } | |
601 | EXPORT_SYMBOL_GPL(__bcma_driver_register); | |
602 | ||
603 | void bcma_driver_unregister(struct bcma_driver *drv) | |
604 | { | |
605 | driver_unregister(&drv->drv); | |
606 | } | |
607 | EXPORT_SYMBOL_GPL(bcma_driver_unregister); | |
608 | ||
609 | static int bcma_bus_match(struct device *dev, struct device_driver *drv) | |
610 | { | |
611 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
612 | struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv); | |
613 | const struct bcma_device_id *cid = &core->id; | |
614 | const struct bcma_device_id *did; | |
615 | ||
616 | for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) { | |
617 | if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) && | |
618 | (did->id == cid->id || did->id == BCMA_ANY_ID) && | |
619 | (did->rev == cid->rev || did->rev == BCMA_ANY_REV) && | |
620 | (did->class == cid->class || did->class == BCMA_ANY_CLASS)) | |
621 | return 1; | |
622 | } | |
623 | return 0; | |
624 | } | |
625 | ||
626 | static int bcma_device_probe(struct device *dev) | |
627 | { | |
628 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
629 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
630 | drv); | |
631 | int err = 0; | |
632 | ||
a971df0b | 633 | get_device(dev); |
8369ae33 RM |
634 | if (adrv->probe) |
635 | err = adrv->probe(core); | |
a971df0b RM |
636 | if (err) |
637 | put_device(dev); | |
8369ae33 RM |
638 | |
639 | return err; | |
640 | } | |
641 | ||
642 | static int bcma_device_remove(struct device *dev) | |
643 | { | |
644 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
645 | struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver, | |
646 | drv); | |
647 | ||
648 | if (adrv->remove) | |
649 | adrv->remove(core); | |
a971df0b | 650 | put_device(dev); |
8369ae33 RM |
651 | |
652 | return 0; | |
653 | } | |
654 | ||
886b66ef DW |
655 | static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env) |
656 | { | |
657 | struct bcma_device *core = container_of(dev, struct bcma_device, dev); | |
658 | ||
659 | return add_uevent_var(env, | |
660 | "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X", | |
661 | core->id.manuf, core->id.id, | |
662 | core->id.rev, core->id.class); | |
663 | } | |
664 | ||
0510931e RM |
665 | static unsigned int bcma_bus_registered; |
666 | ||
667 | /* | |
668 | * If built-in, bus has to be registered early, before any driver calls | |
669 | * bcma_driver_register. | |
670 | * Otherwise registering driver would trigger BUG in driver_register. | |
671 | */ | |
672 | static int __init bcma_init_bus_register(void) | |
8369ae33 RM |
673 | { |
674 | int err; | |
675 | ||
0510931e RM |
676 | if (bcma_bus_registered) |
677 | return 0; | |
678 | ||
8369ae33 | 679 | err = bus_register(&bcma_bus_type); |
0510931e RM |
680 | if (!err) |
681 | bcma_bus_registered = 1; | |
682 | ||
683 | return err; | |
684 | } | |
685 | #ifndef MODULE | |
686 | fs_initcall(bcma_init_bus_register); | |
687 | #endif | |
688 | ||
689 | /* Main initialization has to be done with SPI/mtd/NAND/SPROM available */ | |
690 | static int __init bcma_modinit(void) | |
691 | { | |
692 | int err; | |
693 | ||
694 | err = bcma_init_bus_register(); | |
8369ae33 RM |
695 | if (err) |
696 | return err; | |
697 | ||
2101e533 HM |
698 | err = bcma_host_soc_register_driver(); |
699 | if (err) { | |
700 | pr_err("SoC host initialization failed\n"); | |
701 | err = 0; | |
702 | } | |
8369ae33 RM |
703 | #ifdef CONFIG_BCMA_HOST_PCI |
704 | err = bcma_host_pci_init(); | |
705 | if (err) { | |
706 | pr_err("PCI host initialization failed\n"); | |
707 | err = 0; | |
708 | } | |
709 | #endif | |
710 | ||
711 | return err; | |
712 | } | |
0510931e | 713 | module_init(bcma_modinit); |
8369ae33 RM |
714 | |
715 | static void __exit bcma_modexit(void) | |
716 | { | |
717 | #ifdef CONFIG_BCMA_HOST_PCI | |
718 | bcma_host_pci_exit(); | |
719 | #endif | |
2101e533 | 720 | bcma_host_soc_unregister_driver(); |
8369ae33 RM |
721 | bus_unregister(&bcma_bus_type); |
722 | } | |
723 | module_exit(bcma_modexit) |