3  * Bus subsystem
22 /* contains the number the next bus should get. */
79 static u16 bcma_cc_core_id(struct bcma_bus *bus)  in bcma_cc_core_id()  argument
81 	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)  in bcma_cc_core_id()
86 struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,  in bcma_find_core_unit()  argument
91 	list_for_each_entry(core, &bus->cores, list) {  in bcma_find_core_unit()
113 	bcma_warn(core->bus, "Timeout waiting for register 0x%04X!\n", reg);  in bcma_wait_value()
191 		bcma_debug(core->bus, "bcma_of_get_irq() failed with rc=%d\n",  in bcma_of_get_irq()
215 	struct bcma_bus *bus = core->bus;  in bcma_core_irq()  local
218 	switch (bus->hosttype) {  in bcma_core_irq()
220 		return bus->host_pci->irq;  in bcma_core_irq()
222 		if (bus->drv_mips.core && num == 0) {  in bcma_core_irq()
226 		if (bus->dev)  in bcma_core_irq()
227 			return bcma_of_get_irq(bus->dev, core, num);  in bcma_core_irq()
237 void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core)  in bcma_prepare_core()  argument
240 	core->dev.bus = &bcma_bus_type;  in bcma_prepare_core()
241 	dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);  in bcma_prepare_core()
242 	core->dev.parent = bus->dev;  in bcma_prepare_core()
243 	if (bus->dev)  in bcma_prepare_core()
244 		bcma_of_fill_device(bus->dev, core);  in bcma_prepare_core()
246 	switch (bus->hosttype) {  in bcma_prepare_core()
248 		core->dma_dev = bus->dev;  in bcma_prepare_core()
249 		core->irq = bus->host_pci->irq;  in bcma_prepare_core()
252 		if (IS_ENABLED(CONFIG_OF) && bus->dev) {  in bcma_prepare_core()
253 			core->dma_dev = bus->dev;  in bcma_prepare_core()
264 void bcma_init_bus(struct bcma_bus *bus)  in bcma_init_bus()  argument
267 	bus->num = bcma_bus_next_num++;  in bcma_init_bus()
270 	INIT_LIST_HEAD(&bus->cores);  in bcma_init_bus()
271 	bus->nr_cores = 0;  in bcma_init_bus()
273 	bcma_detect_chip(bus);  in bcma_init_bus()
276 static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core)  in bcma_register_core()  argument
282 		bcma_err(bus, "Could not register dev for core 0x%03X\n",  in bcma_register_core()
290 static int bcma_register_devices(struct bcma_bus *bus)  in bcma_register_devices()  argument
295 	list_for_each_entry(core, &bus->cores, list) {  in bcma_register_devices()
318 		bcma_register_core(bus, core);  in bcma_register_devices()
322 	if (bus->drv_cc.pflash.present) {  in bcma_register_devices()
325 			bcma_err(bus, "Error registering parallel flash\n");  in bcma_register_devices()
330 	if (bus->drv_cc.sflash.present) {  in bcma_register_devices()
333 			bcma_err(bus, "Error registering serial flash\n");  in bcma_register_devices()
338 	if (bus->drv_cc.nflash.present) {  in bcma_register_devices()
341 			bcma_err(bus, "Error registering NAND flash\n");  in bcma_register_devices()
344 	err = bcma_gpio_init(&bus->drv_cc);  in bcma_register_devices()
346 		bcma_debug(bus, "GPIO driver not activated\n");  in bcma_register_devices()
348 		bcma_err(bus, "Error registering GPIO driver: %i\n", err);  in bcma_register_devices()
350 	if (bus->hosttype == BCMA_HOSTTYPE_SOC) {  in bcma_register_devices()
351 		err = bcma_chipco_watchdog_register(&bus->drv_cc);  in bcma_register_devices()
353 			bcma_err(bus, "Error registering watchdog driver\n");  in bcma_register_devices()
359 void bcma_unregister_cores(struct bcma_bus *bus)  in bcma_unregister_cores()  argument
363 	list_for_each_entry_safe(core, tmp, &bus->cores, list) {  in bcma_unregister_cores()
369 	if (bus->hosttype == BCMA_HOSTTYPE_SOC)  in bcma_unregister_cores()
370 		platform_device_unregister(bus->drv_cc.watchdog);  in bcma_unregister_cores()
373 	list_for_each_entry_safe(core, tmp, &bus->cores, list) {  in bcma_unregister_cores()
379 int bcma_bus_register(struct bcma_bus *bus)  in bcma_bus_register()  argument
385 	err = bcma_bus_scan(bus);  in bcma_bus_register()
387 		bcma_err(bus, "Failed to scan: %d\n", err);  in bcma_bus_register()
392 	core = bcma_find_core(bus, bcma_cc_core_id(bus));  in bcma_bus_register()
394 		bus->drv_cc.core = core;  in bcma_bus_register()
395 		bcma_core_chipcommon_early_init(&bus->drv_cc);  in bcma_bus_register()
399 	core = bcma_find_core(bus, BCMA_CORE_PCIE);  in bcma_bus_register()
401 		bus->drv_pci[0].core = core;  in bcma_bus_register()
402 		bcma_core_pci_early_init(&bus->drv_pci[0]);  in bcma_bus_register()
405 	if (bus->dev)  in bcma_bus_register()
406 		of_platform_default_populate(bus->dev->of_node, NULL, bus->dev);  in bcma_bus_register()
409 	list_for_each_entry(core, &bus->cores, list) {  in bcma_bus_register()
411 			bcma_register_core(bus, core);  in bcma_bus_register()
415 	err = bcma_sprom_get(bus);  in bcma_bus_register()
417 		bcma_err(bus, "No SPROM available\n");  in bcma_bus_register()
419 		bcma_err(bus, "Failed to get SPROM: %d\n", err);  in bcma_bus_register()
422 	core = bcma_find_core(bus, bcma_cc_core_id(bus));  in bcma_bus_register()
424 		bus->drv_cc.core = core;  in bcma_bus_register()
425 		bcma_core_chipcommon_init(&bus->drv_cc);  in bcma_bus_register()
429 	core = bcma_find_core(bus, BCMA_CORE_NS_CHIPCOMMON_B);  in bcma_bus_register()
431 		bus->drv_cc_b.core = core;  in bcma_bus_register()
432 		bcma_core_chipcommon_b_init(&bus->drv_cc_b);  in bcma_bus_register()
436 	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);  in bcma_bus_register()
438 		bus->drv_mips.core = core;  in bcma_bus_register()
439 		bcma_core_mips_init(&bus->drv_mips);  in bcma_bus_register()
443 	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0);  in bcma_bus_register()
445 		bus->drv_pci[0].core = core;  in bcma_bus_register()
446 		bcma_core_pci_init(&bus->drv_pci[0]);  in bcma_bus_register()
450 	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);  in bcma_bus_register()
452 		bus->drv_pci[1].core = core;  in bcma_bus_register()
453 		bcma_core_pci_init(&bus->drv_pci[1]);  in bcma_bus_register()
457 	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0);  in bcma_bus_register()
459 		bus->drv_pcie2.core = core;  in bcma_bus_register()
460 		bcma_core_pcie2_init(&bus->drv_pcie2);  in bcma_bus_register()
464 	core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);  in bcma_bus_register()
466 		bus->drv_gmac_cmn.core = core;  in bcma_bus_register()
467 		bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);  in bcma_bus_register()
471 	bcma_register_devices(bus);  in bcma_bus_register()
473 	bcma_info(bus, "Bus registered\n");  in bcma_bus_register()
478 void bcma_bus_unregister(struct bcma_bus *bus)  in bcma_bus_unregister()  argument
482 	err = bcma_gpio_unregister(&bus->drv_cc);  in bcma_bus_unregister()
484 		bcma_err(bus, "Some GPIOs are still in use.\n");  in bcma_bus_unregister()
486 		bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);  in bcma_bus_unregister()
488 	bcma_core_chipcommon_b_free(&bus->drv_cc_b);  in bcma_bus_unregister()
490 	bcma_unregister_cores(bus);  in bcma_bus_unregister()
494  * This is a special version of bus registration function designed for SoCs.
495  * It scans bus and performs basic initialization of main cores only.
498 int __init bcma_bus_early_register(struct bcma_bus *bus)  in bcma_bus_early_register()  argument
504 	err = bcma_bus_scan(bus);  in bcma_bus_early_register()
506 		bcma_err(bus, "Failed to scan bus: %d\n", err);  in bcma_bus_early_register()
511 	core = bcma_find_core(bus, bcma_cc_core_id(bus));  in bcma_bus_early_register()
513 		bus->drv_cc.core = core;  in bcma_bus_early_register()
514 		bcma_core_chipcommon_early_init(&bus->drv_cc);  in bcma_bus_early_register()
518 	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);  in bcma_bus_early_register()
520 		bus->drv_mips.core = core;  in bcma_bus_early_register()
521 		bcma_core_mips_early_init(&bus->drv_mips);  in bcma_bus_early_register()
524 	bcma_info(bus, "Early bus registered\n");  in bcma_bus_early_register()
530 int bcma_bus_suspend(struct bcma_bus *bus)  in bcma_bus_suspend()  argument
534 	list_for_each_entry(core, &bus->cores, list) {  in bcma_bus_suspend()
545 int bcma_bus_resume(struct bcma_bus *bus)  in bcma_bus_resume()  argument
550 	if (bus->drv_cc.core) {  in bcma_bus_resume()
551 		bus->drv_cc.setup_done = false;  in bcma_bus_resume()
552 		bcma_core_chipcommon_init(&bus->drv_cc);  in bcma_bus_resume()
555 	list_for_each_entry(core, &bus->cores, list) {  in bcma_bus_resume()
571 	drv->drv.bus = &bcma_bus_type;  in __bcma_driver_register()
643  * If built-in, bus has to be registered early, before any driver calls