/* * Broadcom specific AMBA * Bus subsystem * * Licensed under the GNU/GPL. See COPYING for details. */ #include "bcma_private.h"#include <linux/module.h>#include <linux/bcma/bcma.h>#include <linux/slab.h> MODULE_DESCRIPTION("Broadcom's specific AMBA driver");MODULE_LICENSE("GPL"); /* contains the number the next bus should get. */static unsigned int bcma_bus_next_num = 0; /* bcma_buses_mutex locks the bcma_bus_next_num */static DEFINE_MUTEX(bcma_buses_mutex); static int bcma_bus_match(struct device *dev, struct device_driver *drv);static int bcma_device_probe(struct device *dev);static int bcma_device_remove(struct device *dev);static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env); static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf){	struct bcma_device *core = container_of(dev, struct bcma_device, dev);	return sprintf(buf, "0x%03X\n", core->id.manuf);}static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf){	struct bcma_device *core = container_of(dev, struct bcma_device, dev);	return sprintf(buf, "0x%03X\n", core->id.id);}static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf){	struct bcma_device *core = container_of(dev, struct bcma_device, dev);	return sprintf(buf, "0x%02X\n", core->id.rev);}static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf){	struct bcma_device *core = container_of(dev, struct bcma_device, dev);	return sprintf(buf, "0x%X\n", core->id.class);}static struct device_attribute bcma_device_attrs[] = {	__ATTR_RO(manuf),	__ATTR_RO(id),	__ATTR_RO(rev),	__ATTR_RO(class),	__ATTR_NULL,}; static struct bus_type bcma_bus_type = {	.name		= "bcma",	.match		= bcma_bus_match,	.probe		= bcma_device_probe,	.remove		= bcma_device_remove,	.uevent		= bcma_device_uevent,	.dev_attrs	= bcma_device_attrs,}; struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid){	struct bcma_device *core; 	list_for_each_entry(core, &bus->cores, list) {		if (core->id.id == coreid)			return core;	}	return NULL;}EXPORT_SYMBOL_GPL(bcma_find_core); static void bcma_release_core_dev(struct device *dev){	struct bcma_device *core = container_of(dev, struct bcma_device, dev);	if (core->io_addr)		iounmap(core->io_addr);	if (core->io_wrap)		iounmap(core->io_wrap);	kfree(core);} static int bcma_register_cores(struct bcma_bus *bus){	struct bcma_device *core;	int err, dev_id = 0; 	list_for_each_entry(core, &bus->cores, list) {		/* We support that cores ourself */		switch (core->id.id) {		case BCMA_CORE_CHIPCOMMON:		case BCMA_CORE_PCI:		case BCMA_CORE_PCIE:		case BCMA_CORE_MIPS_74K:			continue;		} 		core->dev.release = bcma_release_core_dev;		core->dev.bus = &bcma_bus_type;		dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id); 		switch (bus->hosttype) {		case BCMA_HOSTTYPE_PCI:			core->dev.parent = &bus->host_pci->dev;			core->dma_dev = &bus->host_pci->dev;			core->irq = bus->host_pci->irq;			break;		case BCMA_HOSTTYPE_SOC:			core->dev.dma_mask = &core->dev.coherent_dma_mask;			core->dma_dev = &core->dev;			break;		case BCMA_HOSTTYPE_SDIO:			break;		} 		err = device_register(&core->dev);		if (err) {			pr_err("Could not register dev for core 0x%03X\n",			       core->id.id);			continue;		}		core->dev_registered = true;		dev_id++;	} 	return 0;} static void bcma_unregister_cores(struct bcma_bus *bus){	struct bcma_device *core; 	list_for_each_entry(core, &bus->cores, list) {		if (core->dev_registered)			device_unregister(&core->dev);	}} int __devinit bcma_bus_register(struct bcma_bus *bus){	int err;	struct bcma_device *core; 	mutex_lock(&bcma_buses_mutex);	bus->num = bcma_bus_next_num++;	mutex_unlock(&bcma_buses_mutex); 	/* Scan for devices (cores) */	err = bcma_bus_scan(bus);	if (err) {		pr_err("Failed to scan: %d\n", err);		return -1;	} 	/* Init CC core */	core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);	if (core) {		bus->drv_cc.core = core;		bcma_core_chipcommon_init(&bus->drv_cc);	} 	/* Init MIPS core */	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);	if (core) {		bus->drv_mips.core = core;		bcma_core_mips_init(&bus->drv_mips);	} 	/* Init PCIE core */	core = bcma_find_core(bus, BCMA_CORE_PCIE);	if (core) {		bus->drv_pci.core = core;		bcma_core_pci_init(&bus->drv_pci);	} 	/* Try to get SPROM */	err = bcma_sprom_get(bus);	if (err == -ENOENT) {		pr_err("No SPROM available\n");	} else if (err)		pr_err("Failed to get SPROM: %d\n", err); 	/* Register found cores */	bcma_register_cores(bus); 	pr_info("Bus registered\n"); 	return 0;} void bcma_bus_unregister(struct bcma_bus *bus){	bcma_unregister_cores(bus);} int __init bcma_bus_early_register(struct bcma_bus *bus,				   struct bcma_device *core_cc,				   struct bcma_device *core_mips){	int err;	struct bcma_device *core;	struct bcma_device_id match; 	bcma_init_bus(bus); 	match.manuf = BCMA_MANUF_BCM;	match.id = BCMA_CORE_CHIPCOMMON;	match.class = BCMA_CL_SIM;	match.rev = BCMA_ANY_REV; 	/* Scan for chip common core */	err = bcma_bus_scan_early(bus, &match, core_cc);	if (err) {		pr_err("Failed to scan for common core: %d\n", err);		return -1;	} 	match.manuf = BCMA_MANUF_MIPS;	match.id = BCMA_CORE_MIPS_74K;	match.class = BCMA_CL_SIM;	match.rev = BCMA_ANY_REV; 	/* Scan for mips core */	err = bcma_bus_scan_early(bus, &match, core_mips);	if (err) {		pr_err("Failed to scan for mips core: %d\n", err);		return -1;	} 	/* Init CC core */	core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);	if (core) {		bus->drv_cc.core = core;		bcma_core_chipcommon_init(&bus->drv_cc);	} 	/* Init MIPS core */	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);	if (core) {		bus->drv_mips.core = core;		bcma_core_mips_init(&bus->drv_mips);	} 	pr_info("Early bus registered\n"); 	return 0;} #ifdef CONFIG_PMint bcma_bus_suspend(struct bcma_bus *bus){	struct bcma_device *core; 	list_for_each_entry(core, &bus->cores, list) {		struct device_driver *drv = core->dev.driver;		if (drv) {			struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);			if (adrv->suspend)				adrv->suspend(core);		}	}	return 0;} int bcma_bus_resume(struct bcma_bus *bus){	struct bcma_device *core; 	/* Init CC core */	core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);	if (core) {		bus->drv_cc.setup_done = false;		bcma_core_chipcommon_init(&bus->drv_cc);	} 	list_for_each_entry(core, &bus->cores, list) {		struct device_driver *drv = core->dev.driver;		if (drv) {			struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);			if (adrv->resume)				adrv->resume(core);		}	} 	return 0;}#endif int __bcma_driver_register(struct bcma_driver *drv, struct module *owner){	drv->drv.name = drv->name;	drv->drv.bus = &bcma_bus_type;	drv->drv.owner = owner; 	return driver_register(&drv->drv);}EXPORT_SYMBOL_GPL(__bcma_driver_register); void bcma_driver_unregister(struct bcma_driver *drv){	driver_unregister(&drv->drv);}EXPORT_SYMBOL_GPL(bcma_driver_unregister); static int bcma_bus_match(struct device *dev, struct device_driver *drv){	struct bcma_device *core = container_of(dev, struct bcma_device, dev);	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);	const struct bcma_device_id *cid = &core->id;	const struct bcma_device_id *did; 	for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {	    if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&		(did->id == cid->id || did->id == BCMA_ANY_ID) &&		(did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&		(did->class == cid->class || did->class == BCMA_ANY_CLASS))			return 1;	}	return 0;} static int bcma_device_probe(struct device *dev){	struct bcma_device *core = container_of(dev, struct bcma_device, dev);	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,					       drv);	int err = 0; 	if (adrv->probe)		err = adrv->probe(core); 	return err;} static int bcma_device_remove(struct device *dev){	struct bcma_device *core = container_of(dev, struct bcma_device, dev);	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,					       drv); 	if (adrv->remove)		adrv->remove(core); 	return 0;} static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env){	struct bcma_device *core = container_of(dev, struct bcma_device, dev); 	return add_uevent_var(env,			      "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",			      core->id.manuf, core->id.id,			      core->id.rev, core->id.class);} static int __init bcma_modinit(void){	int err; 	err = bus_register(&bcma_bus_type);	if (err)		return err; #ifdef CONFIG_BCMA_HOST_PCI	err = bcma_host_pci_init();	if (err) {		pr_err("PCI host initialization failed\n");		err = 0;	}#endif 	return err;}fs_initcall(bcma_modinit); static void __exit bcma_modexit(void){#ifdef CONFIG_BCMA_HOST_PCI	bcma_host_pci_exit();#endif	bus_unregister(&bcma_bus_type);}module_exit(bcma_modexit)