[mirror_ubuntu-zesty-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/platform_device.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 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 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_4706_CHIPCOMMON:
		case BCMA_CORE_CHIPCOMMON:
		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;
		}

		/* Only first GMAC core on BCM4706 is connected and working */
		if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
		    core->core_unit > 0)
			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) {
			bcma_err(bus,
				 "Could not register dev for core 0x%03X\n",
				 core->id.id);
			put_device(&core->dev);
			continue;
		}
		core->dev_registered = true;
		dev_id++;
	}

#ifdef CONFIG_BCMA_DRIVER_MIPS
	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;
}

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

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

int 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) {
		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);
	}

	/* 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 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_cores(bus);

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

	return 0;
}

void bcma_bus_unregister(struct bcma_bus *bus)
{
	struct bcma_device *cores[3];
	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);

	cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
	cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE);
	cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);

	bcma_unregister_cores(bus);

	kfree(cores[2]);
	kfree(cores[1]);
	kfree(cores[0]);
}

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_cc_core_id(bus);
	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) {
		bcma_err(bus, "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) {
		bcma_err(bus, "Failed to scan for mips core: %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;

	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)
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>
d57ef3a6	10	#include <linux/platform_device.h>
8369ae33	11	#include <linux/bcma/bcma.h>
eef72699	12	#include <linux/slab.h>
8369ae33 RM	13
	14	MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
	15	MODULE_LICENSE("GPL");
	16
8f9ada4f HM	17	/* contains the number the next bus should get. */
	18	static unsigned int bcma_bus_next_num = 0;
	19
	20	/* bcma_buses_mutex locks the bcma_bus_next_num */
	21	static DEFINE_MUTEX(bcma_buses_mutex);
	22
8369ae33 RM	23	static int bcma_bus_match(struct device dev, struct device_driver drv);
	24	static int bcma_device_probe(struct device *dev);
	25	static int bcma_device_remove(struct device *dev);
886b66ef	26	static int bcma_device_uevent(struct device dev, struct kobj_uevent_env env);
8369ae33 RM	27
	28	static ssize_t manuf_show(struct device dev, struct device_attribute attr, char *buf)
	29	{
	30	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	31	return sprintf(buf, "0x%03X\n", core->id.manuf);
	32	}
fdcf4f81 GKH	33	static DEVICE_ATTR_RO(manuf);
fdcf4f81 GKH	34
8369ae33 RM	35	static ssize_t id_show(struct device dev, struct device_attribute attr, char *buf)
	36	{
	37	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	38	return sprintf(buf, "0x%03X\n", core->id.id);
	39	}
fdcf4f81 GKH	40	static DEVICE_ATTR_RO(id);
fdcf4f81 GKH	41
8369ae33 RM	42	static ssize_t rev_show(struct device dev, struct device_attribute attr, char *buf)
	43	{
	44	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	45	return sprintf(buf, "0x%02X\n", core->id.rev);
	46	}
fdcf4f81 GKH	47	static DEVICE_ATTR_RO(rev);
fdcf4f81 GKH	48
8369ae33 RM	49	static ssize_t class_show(struct device dev, struct device_attribute attr, char *buf)
	50	{
	51	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	52	return sprintf(buf, "0x%X\n", core->id.class);
	53	}
fdcf4f81 GKH	54	static DEVICE_ATTR_RO(class);
	55
	56	static struct attribute *bcma_device_attrs[] = {
	57	&dev_attr_manuf.attr,
	58	&dev_attr_id.attr,
	59	&dev_attr_rev.attr,
	60	&dev_attr_class.attr,
	61	NULL,
8369ae33	62	};
fdcf4f81	63	ATTRIBUTE_GROUPS(bcma_device);
8369ae33 RM	64
	65	static struct bus_type bcma_bus_type = {
	66	.name = "bcma",
	67	.match = bcma_bus_match,
	68	.probe = bcma_device_probe,
	69	.remove = bcma_device_remove,
886b66ef	70	.uevent = bcma_device_uevent,
fdcf4f81	71	.dev_groups = bcma_device_groups,
8369ae33 RM	72	};
8369ae33 RM	73
6d5cfc9f RM	74	static u16 bcma_cc_core_id(struct bcma_bus *bus)
	75	{
	76	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
	77	return BCMA_CORE_4706_CHIPCOMMON;
	78	return BCMA_CORE_CHIPCOMMON;
	79	}
	80
929a03ae HM	81	struct bcma_device bcma_find_core_unit(struct bcma_bus bus, u16 coreid,
929a03ae HM	82	u8 unit)
dfae7143 HM	83	{
	84	struct bcma_device *core;
	85
	86	list_for_each_entry(core, &bus->cores, list) {
	87	if (core->id.id == coreid && core->core_unit == unit)
	88	return core;
	89	}
	90	return NULL;
	91	}
b2395b8a	92	EXPORT_SYMBOL_GPL(bcma_find_core_unit);
dfae7143	93
88f9b65d RM	94	bool bcma_wait_value(struct bcma_device *core, u16 reg, u32 mask, u32 value,
	95	int timeout)
	96	{
	97	unsigned long deadline = jiffies + timeout;
	98	u32 val;
	99
	100	do {
	101	val = bcma_read32(core, reg);
	102	if ((val & mask) == value)
	103	return true;
	104	cpu_relax();
	105	udelay(10);
	106	} while (!time_after_eq(jiffies, deadline));
	107
	108	bcma_warn(core->bus, "Timeout waiting for register 0x%04X!\n", reg);
	109
	110	return false;
	111	}
	112
8369ae33 RM	113	static void bcma_release_core_dev(struct device *dev)
	114	{
	115	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
ecd177c2 HM	116	if (core->io_addr)
	117	iounmap(core->io_addr);
	118	if (core->io_wrap)
	119	iounmap(core->io_wrap);
8369ae33 RM	120	kfree(core);
	121	}
	122
	123	static int bcma_register_cores(struct bcma_bus *bus)
	124	{
	125	struct bcma_device *core;
	126	int err, dev_id = 0;
	127
	128	list_for_each_entry(core, &bus->cores, list) {
	129	/* We support that cores ourself */
	130	switch (core->id.id) {
6d5cfc9f	131	case BCMA_CORE_4706_CHIPCOMMON:
8369ae33 RM	132	case BCMA_CORE_CHIPCOMMON:
	133	case BCMA_CORE_PCI:
	134	case BCMA_CORE_PCIE:
f473832f	135	case BCMA_CORE_PCIE2:
21e0534a	136	case BCMA_CORE_MIPS_74K:
e1ac4b40	137	case BCMA_CORE_4706_MAC_GBIT_COMMON:
8369ae33 RM	138	continue;
	139	}
	140
10419d08 RM	141	/* Only first GMAC core on BCM4706 is connected and working */
	142	if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
	143	core->core_unit > 0)
	144	continue;
	145
8369ae33 RM	146	core->dev.release = bcma_release_core_dev;
8369ae33 RM	147	core->dev.bus = &bcma_bus_type;
8f9ada4f	148	dev_set_name(&core->dev, "bcma%d:%d", bus->num, dev_id);
8369ae33 RM	149
	150	switch (bus->hosttype) {
	151	case BCMA_HOSTTYPE_PCI:
	152	core->dev.parent = &bus->host_pci->dev;
1bdcd095 RM	153	core->dma_dev = &bus->host_pci->dev;
1bdcd095 RM	154	core->irq = bus->host_pci->irq;
8369ae33	155	break;
ecd177c2 HM	156	case BCMA_HOSTTYPE_SOC:
	157	core->dev.dma_mask = &core->dev.coherent_dma_mask;
	158	core->dma_dev = &core->dev;
	159	break;
8369ae33 RM	160	case BCMA_HOSTTYPE_SDIO:
	161	break;
	162	}
	163
	164	err = device_register(&core->dev);
	165	if (err) {
3d9d8af3 RM	166	bcma_err(bus,
	167	"Could not register dev for core 0x%03X\n",
	168	core->id.id);
08f336b8	169	put_device(&core->dev);
8369ae33 RM	170	continue;
	171	}
	172	core->dev_registered = true;
	173	dev_id++;
	174	}
	175
73e4dbe4 RM	176	#ifdef CONFIG_BCMA_DRIVER_MIPS
	177	if (bus->drv_cc.pflash.present) {
	178	err = platform_device_register(&bcma_pflash_dev);
	179	if (err)
	180	bcma_err(bus, "Error registering parallel flash\n");
	181	}
	182	#endif
	183
d57ef3a6 RM	184	#ifdef CONFIG_BCMA_SFLASH
	185	if (bus->drv_cc.sflash.present) {
	186	err = platform_device_register(&bcma_sflash_dev);
	187	if (err)
	188	bcma_err(bus, "Error registering serial flash\n");
	189	}
	190	#endif
	191
371a0044 RM	192	#ifdef CONFIG_BCMA_NFLASH
	193	if (bus->drv_cc.nflash.present) {
	194	err = platform_device_register(&bcma_nflash_dev);
	195	if (err)
	196	bcma_err(bus, "Error registering NAND flash\n");
	197	}
	198	#endif
cf0936b0 HM	199	err = bcma_gpio_init(&bus->drv_cc);
	200	if (err == -ENOTSUPP)
	201	bcma_debug(bus, "GPIO driver not activated\n");
	202	else if (err)
	203	bcma_err(bus, "Error registering GPIO driver: %i\n", err);
371a0044	204
a4855f39 HM	205	if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
	206	err = bcma_chipco_watchdog_register(&bus->drv_cc);
	207	if (err)
	208	bcma_err(bus, "Error registering watchdog driver\n");
	209	}
	210
8369ae33 RM	211	return 0;
	212	}
	213
	214	static void bcma_unregister_cores(struct bcma_bus *bus)
	215	{
1fffa905	216	struct bcma_device core, tmp;
8369ae33	217
1fffa905 PH	218	list_for_each_entry_safe(core, tmp, &bus->cores, list) {
1fffa905 PH	219	list_del(&core->list);
8369ae33 RM	220	if (core->dev_registered)
	221	device_unregister(&core->dev);
	222	}
a4855f39 HM	223	if (bus->hosttype == BCMA_HOSTTYPE_SOC)
a4855f39 HM	224	platform_device_unregister(bus->drv_cc.watchdog);
8369ae33 RM	225	}
8369ae33 RM	226
0f58a01d	227	int bcma_bus_register(struct bcma_bus *bus)
8369ae33 RM	228	{
	229	int err;
	230	struct bcma_device *core;
	231
8f9ada4f HM	232	mutex_lock(&bcma_buses_mutex);
	233	bus->num = bcma_bus_next_num++;
	234	mutex_unlock(&bcma_buses_mutex);
	235
8369ae33 RM	236	/* Scan for devices (cores) */
	237	err = bcma_bus_scan(bus);
	238	if (err) {
3d9d8af3	239	bcma_err(bus, "Failed to scan: %d\n", err);
1cabf7db	240	return err;
8369ae33 RM	241	}
8369ae33 RM	242
30cfb023 HM	243	/* Early init CC core */
	244	core = bcma_find_core(bus, bcma_cc_core_id(bus));
	245	if (core) {
	246	bus->drv_cc.core = core;
	247	bcma_core_chipcommon_early_init(&bus->drv_cc);
	248	}
	249
	250	/* Try to get SPROM */
	251	err = bcma_sprom_get(bus);
	252	if (err == -ENOENT) {
	253	bcma_err(bus, "No SPROM available\n");
	254	} else if (err)
	255	bcma_err(bus, "Failed to get SPROM: %d\n", err);
	256
8369ae33	257	/* Init CC core */
6d5cfc9f	258	core = bcma_find_core(bus, bcma_cc_core_id(bus));
8369ae33 RM	259	if (core) {
	260	bus->drv_cc.core = core;
	261	bcma_core_chipcommon_init(&bus->drv_cc);
	262	}
	263
21e0534a HM	264	/* Init MIPS core */
	265	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
	266	if (core) {
	267	bus->drv_mips.core = core;
	268	bcma_core_mips_init(&bus->drv_mips);
	269	}
	270
8369ae33	271	/* Init PCIE core */
dfae7143 HM	272	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0);
	273	if (core) {
	274	bus->drv_pci[0].core = core;
	275	bcma_core_pci_init(&bus->drv_pci[0]);
	276	}
	277
	278	/* Init PCIE core */
	279	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);
8369ae33	280	if (core) {
dfae7143 HM	281	bus->drv_pci[1].core = core;
dfae7143 HM	282	bcma_core_pci_init(&bus->drv_pci[1]);
8369ae33 RM	283	}
8369ae33 RM	284
f473832f RM	285	/* Init PCIe Gen 2 core */
	286	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0);
	287	if (core) {
	288	bus->drv_pcie2.core = core;
	289	bcma_core_pcie2_init(&bus->drv_pcie2);
	290	}
	291
e1ac4b40 RM	292	/* Init GBIT MAC COMMON core */
	293	core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
	294	if (core) {
	295	bus->drv_gmac_cmn.core = core;
	296	bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
	297	}
	298
8369ae33 RM	299	/* Register found cores */
	300	bcma_register_cores(bus);
	301
3d9d8af3	302	bcma_info(bus, "Bus registered\n");
8369ae33 RM	303
	304	return 0;
	305	}
8369ae33 RM	306
	307	void bcma_bus_unregister(struct bcma_bus *bus)
	308	{
ee915927	309	struct bcma_device *cores[3];
c50ae947 HM	310	int err;
	311
	312	err = bcma_gpio_unregister(&bus->drv_cc);
	313	if (err == -EBUSY)
	314	bcma_err(bus, "Some GPIOs are still in use.\n");
	315	else if (err)
	316	bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);
ee915927 SSJ	317
	318	cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
	319	cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE);
	320	cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
	321
8369ae33	322	bcma_unregister_cores(bus);
ee915927 SSJ	323
	324	kfree(cores[2]);
	325	kfree(cores[1]);
	326	kfree(cores[0]);
8369ae33	327	}
8369ae33	328
517f43e5 HM	329	int __init bcma_bus_early_register(struct bcma_bus *bus,
	330	struct bcma_device *core_cc,
	331	struct bcma_device *core_mips)
	332	{
	333	int err;
	334	struct bcma_device *core;
	335	struct bcma_device_id match;
	336
	337	bcma_init_bus(bus);
	338
	339	match.manuf = BCMA_MANUF_BCM;
6d5cfc9f	340	match.id = bcma_cc_core_id(bus);
517f43e5 HM	341	match.class = BCMA_CL_SIM;
	342	match.rev = BCMA_ANY_REV;
	343
	344	/* Scan for chip common core */
	345	err = bcma_bus_scan_early(bus, &match, core_cc);
	346	if (err) {
3d9d8af3	347	bcma_err(bus, "Failed to scan for common core: %d\n", err);
517f43e5 HM	348	return -1;
	349	}
	350
	351	match.manuf = BCMA_MANUF_MIPS;
	352	match.id = BCMA_CORE_MIPS_74K;
	353	match.class = BCMA_CL_SIM;
	354	match.rev = BCMA_ANY_REV;
	355
	356	/* Scan for mips core */
	357	err = bcma_bus_scan_early(bus, &match, core_mips);
	358	if (err) {
3d9d8af3	359	bcma_err(bus, "Failed to scan for mips core: %d\n", err);
517f43e5 HM	360	return -1;
	361	}
	362
49655bb8	363	/* Early init CC core */
6d5cfc9f	364	core = bcma_find_core(bus, bcma_cc_core_id(bus));
517f43e5 HM	365	if (core) {
517f43e5 HM	366	bus->drv_cc.core = core;
49655bb8	367	bcma_core_chipcommon_early_init(&bus->drv_cc);
517f43e5 HM	368	}
517f43e5 HM	369
49655bb8	370	/* Early init MIPS core */
21e0534a HM	371	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
	372	if (core) {
	373	bus->drv_mips.core = core;
49655bb8	374	bcma_core_mips_early_init(&bus->drv_mips);
21e0534a HM	375	}
21e0534a HM	376
3d9d8af3	377	bcma_info(bus, "Early bus registered\n");
517f43e5 HM	378
	379	return 0;
	380	}
	381
775ab521	382	#ifdef CONFIG_PM
685a4ef0 LT	383	int bcma_bus_suspend(struct bcma_bus *bus)
685a4ef0 LT	384	{
7d5869e7 LT	385	struct bcma_device *core;
	386
	387	list_for_each_entry(core, &bus->cores, list) {
	388	struct device_driver *drv = core->dev.driver;
	389	if (drv) {
	390	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
	391	if (adrv->suspend)
	392	adrv->suspend(core);
	393	}
	394	}
685a4ef0 LT	395	return 0;
	396	}
	397
775ab521 RM	398	int bcma_bus_resume(struct bcma_bus *bus)
	399	{
	400	struct bcma_device *core;
	401
	402	/* Init CC core */
6d5cfc9f	403	if (bus->drv_cc.core) {
775ab521 RM	404	bus->drv_cc.setup_done = false;
	405	bcma_core_chipcommon_init(&bus->drv_cc);
	406	}
	407
7d5869e7 LT	408	list_for_each_entry(core, &bus->cores, list) {
	409	struct device_driver *drv = core->dev.driver;
	410	if (drv) {
	411	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
	412	if (adrv->resume)
	413	adrv->resume(core);
	414	}
	415	}
	416
775ab521 RM	417	return 0;
	418	}
	419	#endif
	420
8369ae33 RM	421	int __bcma_driver_register(struct bcma_driver drv, struct module owner)
	422	{
	423	drv->drv.name = drv->name;
	424	drv->drv.bus = &bcma_bus_type;
	425	drv->drv.owner = owner;
	426
	427	return driver_register(&drv->drv);
	428	}
	429	EXPORT_SYMBOL_GPL(__bcma_driver_register);
	430
	431	void bcma_driver_unregister(struct bcma_driver *drv)
	432	{
	433	driver_unregister(&drv->drv);
	434	}
	435	EXPORT_SYMBOL_GPL(bcma_driver_unregister);
	436
	437	static int bcma_bus_match(struct device dev, struct device_driver drv)
	438	{
	439	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	440	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
	441	const struct bcma_device_id *cid = &core->id;
	442	const struct bcma_device_id *did;
	443
	444	for (did = adrv->id_table; did->manuf \|\| did->id \|\| did->rev; did++) {
	445	if ((did->manuf == cid->manuf \|\| did->manuf == BCMA_ANY_MANUF) &&
	446	(did->id == cid->id \|\| did->id == BCMA_ANY_ID) &&
	447	(did->rev == cid->rev \|\| did->rev == BCMA_ANY_REV) &&
	448	(did->class == cid->class \|\| did->class == BCMA_ANY_CLASS))
	449	return 1;
	450	}
	451	return 0;
	452	}
	453
	454	static int bcma_device_probe(struct device *dev)
	455	{
	456	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	457	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
	458	drv);
	459	int err = 0;
	460
	461	if (adrv->probe)
	462	err = adrv->probe(core);
	463
	464	return err;
	465	}
	466
	467	static int bcma_device_remove(struct device *dev)
	468	{
	469	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	470	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
	471	drv);
	472
	473	if (adrv->remove)
	474	adrv->remove(core);
	475
	476	return 0;
	477	}
	478
886b66ef DW	479	static int bcma_device_uevent(struct device dev, struct kobj_uevent_env env)
	480	{
	481	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	482
	483	return add_uevent_var(env,
	484	"MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
	485	core->id.manuf, core->id.id,
	486	core->id.rev, core->id.class);
	487	}
	488
8369ae33 RM	489	static int __init bcma_modinit(void)
	490	{
	491	int err;
	492
	493	err = bus_register(&bcma_bus_type);
	494	if (err)
	495	return err;
	496
	497	#ifdef CONFIG_BCMA_HOST_PCI
	498	err = bcma_host_pci_init();
	499	if (err) {
	500	pr_err("PCI host initialization failed\n");
	501	err = 0;
	502	}
	503	#endif
	504
	505	return err;
	506	}
	507	fs_initcall(bcma_modinit);
	508
	509	static void __exit bcma_modexit(void)
	510	{
	511	#ifdef CONFIG_BCMA_HOST_PCI
	512	bcma_host_pci_exit();
	513	#endif
	514	bus_unregister(&bcma_bus_type);
	515	}
	516	module_exit(bcma_modexit)