[mirror_ubuntu-artful-kernel.git] / drivers / bcma / main.c

/*
 * Broadcom specific AMBA
 * Bus subsystem
 *
 * Licensed under the GNU/GPL. See COPYING for details.
 */

#include "bcma_private.h"
#include <linux/module.h>
#include <linux/mmc/sdio_func.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/bcma/bcma.h>
#include <linux/slab.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.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 DEVICE_ATTR_RO(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 DEVICE_ATTR_RO(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 DEVICE_ATTR_RO(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 DEVICE_ATTR_RO(class);

static struct attribute *bcma_device_attrs[] = {
	&dev_attr_manuf.attr,
	&dev_attr_id.attr,
	&dev_attr_rev.attr,
	&dev_attr_class.attr,
	NULL,
};
ATTRIBUTE_GROUPS(bcma_device);

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_groups	= bcma_device_groups,
};

static u16 bcma_cc_core_id(struct bcma_bus *bus)
{
	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
		return BCMA_CORE_4706_CHIPCOMMON;
	return BCMA_CORE_CHIPCOMMON;
}

struct bcma_device *bcma_find_core_unit(struct bcma_bus *bus, u16 coreid,
					u8 unit)
{
	struct bcma_device *core;

	list_for_each_entry(core, &bus->cores, list) {
		if (core->id.id == coreid && core->core_unit == unit)
			return core;
	}
	return NULL;
}
EXPORT_SYMBOL_GPL(bcma_find_core_unit);

bool bcma_wait_value(struct bcma_device *core, u16 reg, u32 mask, u32 value,
		     int timeout)
{
	unsigned long deadline = jiffies + timeout;
	u32 val;

	do {
		val = bcma_read32(core, reg);
		if ((val & mask) == value)
			return true;
		cpu_relax();
		udelay(10);
	} while (!time_after_eq(jiffies, deadline));

	bcma_warn(core->bus, "Timeout waiting for register 0x%04X!\n", reg);

	return false;
}

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 bool bcma_is_core_needed_early(u16 core_id)
{
	switch (core_id) {
	case BCMA_CORE_NS_NAND:
	case BCMA_CORE_NS_QSPI:
		return true;
	}

	return false;
}

static struct device_node *bcma_of_find_child_device(struct device *parent,
						     struct bcma_device *core)
{
	struct device_node *node;
	u64 size;
	const __be32 *reg;

	if (!parent->of_node)
		return NULL;

	for_each_child_of_node(parent->of_node, node) {
		reg = of_get_address(node, 0, &size, NULL);
		if (!reg)
			continue;
		if (of_translate_address(node, reg) == core->addr)
			return node;
	}
	return NULL;
}

static int bcma_of_irq_parse(struct device *parent,
			     struct bcma_device *core,
			     struct of_phandle_args *out_irq, int num)
{
	__be32 laddr[1];
	int rc;

	if (core->dev.of_node) {
		rc = of_irq_parse_one(core->dev.of_node, num, out_irq);
		if (!rc)
			return rc;
	}

	out_irq->np = parent->of_node;
	out_irq->args_count = 1;
	out_irq->args[0] = num;

	laddr[0] = cpu_to_be32(core->addr);
	return of_irq_parse_raw(laddr, out_irq);
}

static unsigned int bcma_of_get_irq(struct device *parent,
				    struct bcma_device *core, int num)
{
	struct of_phandle_args out_irq;
	int ret;

	if (!IS_ENABLED(CONFIG_OF_IRQ) || !parent->of_node)
		return 0;

	ret = bcma_of_irq_parse(parent, core, &out_irq, num);
	if (ret) {
		bcma_debug(core->bus, "bcma_of_get_irq() failed with rc=%d\n",
			   ret);
		return 0;
	}

	return irq_create_of_mapping(&out_irq);
}

static void bcma_of_fill_device(struct device *parent,
				struct bcma_device *core)
{
	struct device_node *node;

	if (!IS_ENABLED(CONFIG_OF_IRQ))
		return;

	node = bcma_of_find_child_device(parent, core);
	if (node)
		core->dev.of_node = node;

	core->irq = bcma_of_get_irq(parent, core, 0);

	of_dma_configure(&core->dev, node);
}

unsigned int bcma_core_irq(struct bcma_device *core, int num)
{
	struct bcma_bus *bus = core->bus;
	unsigned int mips_irq;

	switch (bus->hosttype) {
	case BCMA_HOSTTYPE_PCI:
		return bus->host_pci->irq;
	case BCMA_HOSTTYPE_SOC:
		if (bus->drv_mips.core && num == 0) {
			mips_irq = bcma_core_mips_irq(core);
			return mips_irq <= 4 ? mips_irq + 2 : 0;
		}
		if (bus->host_pdev)
			return bcma_of_get_irq(&bus->host_pdev->dev, core, num);
		return 0;
	case BCMA_HOSTTYPE_SDIO:
		return 0;
	}

	return 0;
}
EXPORT_SYMBOL(bcma_core_irq);

void bcma_prepare_core(struct bcma_bus *bus, struct bcma_device *core)
{
	core->dev.release = bcma_release_core_dev;
	core->dev.bus = &bcma_bus_type;
	dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);

	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:
		if (IS_ENABLED(CONFIG_OF) && bus->host_pdev) {
			core->dma_dev = &bus->host_pdev->dev;
			core->dev.parent = &bus->host_pdev->dev;
			if (core->dev.parent)
				bcma_of_fill_device(core->dev.parent, core);
		} else {
			core->dev.dma_mask = &core->dev.coherent_dma_mask;
			core->dma_dev = &core->dev;
		}
		break;
	case BCMA_HOSTTYPE_SDIO:
		break;
	}
}

struct device *bcma_bus_get_host_dev(struct bcma_bus *bus)
{
	switch (bus->hosttype) {
	case BCMA_HOSTTYPE_PCI:
		if (bus->host_pci)
			return &bus->host_pci->dev;
		else
			return NULL;
	case BCMA_HOSTTYPE_SOC:
		if (bus->host_pdev)
			return &bus->host_pdev->dev;
		else
			return NULL;
	case BCMA_HOSTTYPE_SDIO:
		if (bus->host_sdio)
			return &bus->host_sdio->dev;
		else
			return NULL;
	}
	return NULL;
}

void bcma_init_bus(struct bcma_bus *bus)
{
	mutex_lock(&bcma_buses_mutex);
	bus->num = bcma_bus_next_num++;
	mutex_unlock(&bcma_buses_mutex);

	INIT_LIST_HEAD(&bus->cores);
	bus->nr_cores = 0;

	bcma_detect_chip(bus);
}

static void bcma_register_core(struct bcma_bus *bus, struct bcma_device *core)
{
	int err;

	err = device_register(&core->dev);
	if (err) {
		bcma_err(bus, "Could not register dev for core 0x%03X\n",
			 core->id.id);
		put_device(&core->dev);
		return;
	}
	core->dev_registered = true;
}

static int bcma_register_devices(struct bcma_bus *bus)
{
	struct bcma_device *core;
	int err;

	list_for_each_entry(core, &bus->cores, list) {
		/* We support that cores ourself */
		switch (core->id.id) {
		case BCMA_CORE_4706_CHIPCOMMON:
		case BCMA_CORE_CHIPCOMMON:
		case BCMA_CORE_NS_CHIPCOMMON_B:
		case BCMA_CORE_PCI:
		case BCMA_CORE_PCIE:
		case BCMA_CORE_PCIE2:
		case BCMA_CORE_MIPS_74K:
		case BCMA_CORE_4706_MAC_GBIT_COMMON:
			continue;
		}

		/* Early cores were already registered */
		if (bcma_is_core_needed_early(core->id.id))
			continue;

		/* Only first GMAC core on BCM4706 is connected and working */
		if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
		    core->core_unit > 0)
			continue;

		bcma_register_core(bus, core);
	}

#ifdef CONFIG_BCMA_PFLASH
	if (bus->drv_cc.pflash.present) {
		err = platform_device_register(&bcma_pflash_dev);
		if (err)
			bcma_err(bus, "Error registering parallel flash\n");
	}
#endif

#ifdef CONFIG_BCMA_SFLASH
	if (bus->drv_cc.sflash.present) {
		err = platform_device_register(&bcma_sflash_dev);
		if (err)
			bcma_err(bus, "Error registering serial flash\n");
	}
#endif

#ifdef CONFIG_BCMA_NFLASH
	if (bus->drv_cc.nflash.present) {
		err = platform_device_register(&bcma_nflash_dev);
		if (err)
			bcma_err(bus, "Error registering NAND flash\n");
	}
#endif
	err = bcma_gpio_init(&bus->drv_cc);
	if (err == -ENOTSUPP)
		bcma_debug(bus, "GPIO driver not activated\n");
	else if (err)
		bcma_err(bus, "Error registering GPIO driver: %i\n", err);

	if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
		err = bcma_chipco_watchdog_register(&bus->drv_cc);
		if (err)
			bcma_err(bus, "Error registering watchdog driver\n");
	}

	return 0;
}

void bcma_unregister_cores(struct bcma_bus *bus)
{
	struct bcma_device *core, *tmp;

	list_for_each_entry_safe(core, tmp, &bus->cores, list) {
		if (!core->dev_registered)
			continue;
		list_del(&core->list);
		device_unregister(&core->dev);
	}
	if (bus->hosttype == BCMA_HOSTTYPE_SOC)
		platform_device_unregister(bus->drv_cc.watchdog);

	/* Now noone uses internally-handled cores, we can free them */
	list_for_each_entry_safe(core, tmp, &bus->cores, list) {
		list_del(&core->list);
		kfree(core);
	}
}

int bcma_bus_register(struct bcma_bus *bus)
{
	int err;
	struct bcma_device *core;
	struct device *dev;

	/* Scan for devices (cores) */
	err = bcma_bus_scan(bus);
	if (err) {
		bcma_err(bus, "Failed to scan: %d\n", err);
		return err;
	}

	/* Early init CC core */
	core = bcma_find_core(bus, bcma_cc_core_id(bus));
	if (core) {
		bus->drv_cc.core = core;
		bcma_core_chipcommon_early_init(&bus->drv_cc);
	}

	/* Early init PCIE core */
	core = bcma_find_core(bus, BCMA_CORE_PCIE);
	if (core) {
		bus->drv_pci[0].core = core;
		bcma_core_pci_early_init(&bus->drv_pci[0]);
	}

	dev = bcma_bus_get_host_dev(bus);
	if (dev) {
		of_platform_default_populate(dev->of_node, NULL, dev);
	}

	/* Cores providing flash access go before SPROM init */
	list_for_each_entry(core, &bus->cores, list) {
		if (bcma_is_core_needed_early(core->id.id))
			bcma_register_core(bus, core);
	}

	/* Try to get SPROM */
	err = bcma_sprom_get(bus);
	if (err == -ENOENT) {
		bcma_err(bus, "No SPROM available\n");
	} else if (err)
		bcma_err(bus, "Failed to get SPROM: %d\n", err);

	/* Init CC core */
	core = bcma_find_core(bus, bcma_cc_core_id(bus));
	if (core) {
		bus->drv_cc.core = core;
		bcma_core_chipcommon_init(&bus->drv_cc);
	}

	/* Init CC core */
	core = bcma_find_core(bus, BCMA_CORE_NS_CHIPCOMMON_B);
	if (core) {
		bus->drv_cc_b.core = core;
		bcma_core_chipcommon_b_init(&bus->drv_cc_b);
	}

	/* 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_unit(bus, BCMA_CORE_PCIE, 0);
	if (core) {
		bus->drv_pci[0].core = core;
		bcma_core_pci_init(&bus->drv_pci[0]);
	}

	/* Init PCIE core */
	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);
	if (core) {
		bus->drv_pci[1].core = core;
		bcma_core_pci_init(&bus->drv_pci[1]);
	}

	/* Init PCIe Gen 2 core */
	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0);
	if (core) {
		bus->drv_pcie2.core = core;
		bcma_core_pcie2_init(&bus->drv_pcie2);
	}

	/* Init GBIT MAC COMMON core */
	core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
	if (core) {
		bus->drv_gmac_cmn.core = core;
		bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
	}

	/* Register found cores */
	bcma_register_devices(bus);

	bcma_info(bus, "Bus registered\n");

	return 0;
}

void bcma_bus_unregister(struct bcma_bus *bus)
{
	int err;

	err = bcma_gpio_unregister(&bus->drv_cc);
	if (err == -EBUSY)
		bcma_err(bus, "Some GPIOs are still in use.\n");
	else if (err)
		bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);

	bcma_core_chipcommon_b_free(&bus->drv_cc_b);

	bcma_unregister_cores(bus);
}

/*
 * This is a special version of bus registration function designed for SoCs.
 * It scans bus and performs basic initialization of main cores only.
 * Please note it requires memory allocation, however it won't try to sleep.
 */
int __init bcma_bus_early_register(struct bcma_bus *bus)
{
	int err;
	struct bcma_device *core;

	/* Scan for devices (cores) */
	err = bcma_bus_scan(bus);
	if (err) {
		bcma_err(bus, "Failed to scan bus: %d\n", err);
		return -1;
	}

	/* Early init CC core */
	core = bcma_find_core(bus, bcma_cc_core_id(bus));
	if (core) {
		bus->drv_cc.core = core;
		bcma_core_chipcommon_early_init(&bus->drv_cc);
	}

	/* Early init MIPS core */
	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
	if (core) {
		bus->drv_mips.core = core;
		bcma_core_mips_early_init(&bus->drv_mips);
	}

	bcma_info(bus, "Early bus registered\n");

	return 0;
}

#ifdef CONFIG_PM
int 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 */
	if (bus->drv_cc.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;

	get_device(dev);
	if (adrv->probe)
		err = adrv->probe(core);
	if (err)
		put_device(dev);

	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);
	put_device(dev);

	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 unsigned int bcma_bus_registered;

/*
 * If built-in, bus has to be registered early, before any driver calls
 * bcma_driver_register.
 * Otherwise registering driver would trigger BUG in driver_register.
 */
static int __init bcma_init_bus_register(void)
{
	int err;

	if (bcma_bus_registered)
		return 0;

	err = bus_register(&bcma_bus_type);
	if (!err)
		bcma_bus_registered = 1;

	return err;
}
#ifndef MODULE
fs_initcall(bcma_init_bus_register);
#endif

/* Main initialization has to be done with SPI/mtd/NAND/SPROM available */
static int __init bcma_modinit(void)
{
	int err;

	err = bcma_init_bus_register();
	if (err)
		return err;

	err = bcma_host_soc_register_driver();
	if (err) {
		pr_err("SoC host initialization failed\n");
		err = 0;
	}
#ifdef CONFIG_BCMA_HOST_PCI
	err = bcma_host_pci_init();
	if (err) {
		pr_err("PCI host initialization failed\n");
		err = 0;
	}
#endif

	return err;
}
module_init(bcma_modinit);

static void __exit bcma_modexit(void)
{
#ifdef CONFIG_BCMA_HOST_PCI
	bcma_host_pci_exit();
#endif
	bcma_host_soc_unregister_driver();
	bus_unregister(&bcma_bus_type);
}
module_exit(bcma_modexit)
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);
fdcf4f81 GKH	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);
fdcf4f81 GKH	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);
fdcf4f81 GKH	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	};
8369ae33 RM	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,
929a03ae HM	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;
2101e533 HM	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
71783576 HM	211	core->irq = bcma_of_get_irq(parent, core, 0);
defb893f AB	212
defb893f AB	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;
2101e533 HM	255	core->dev.parent = &bus->host_pdev->dev;
b1a4c9a1 RM	256	if (core->dev.parent)
b1a4c9a1 RM	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;
2101e533 HM	261	}
6e094bd8 RM	262	break;
	263	case BCMA_HOSTTYPE_SDIO:
	264	break;
	265	}
ab54bc84 RM	266	}
ab54bc84 RM	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	{
8369ae33 RM	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:
8369ae33 RM	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	}
8369ae33 RM	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)
17fbaa6e RM	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)
a4855f39 HM	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	}
8369ae33 RM	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	}
8369ae33 RM	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) {
69b5f4da HM	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;
dfae7143 HM	482	bcma_core_pci_init(&bus->drv_pci[1]);
8369ae33 RM	483	}
8369ae33 RM	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);
1716bcf3 HM	518
8369ae33 RM	519	bcma_unregister_cores(bus);
8369ae33 RM	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) */
c5ed1df7 RM	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) {
517f43e5 HM	542	bus->drv_cc.core = core;
49655bb8	543	bcma_core_chipcommon_early_init(&bus->drv_cc);
517f43e5 HM	544	}
517f43e5 HM	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	}
21e0534a HM	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)
685a4ef0 LT	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)
8369ae33 RM	639	err = adrv->probe(core);
a971df0b RM	640	if (err)
a971df0b RM	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)