[deliverable/linux.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>
#include <linux/of_address.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;
}

#ifdef CONFIG_OF
static struct device_node *bcma_of_find_child_device(struct platform_device *parent,
						     struct bcma_device *core)
{
	struct device_node *node;
	u64 size;
	const __be32 *reg;

	if (!parent || !parent->dev.of_node)
		return NULL;

	for_each_child_of_node(parent->dev.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 void bcma_of_fill_device(struct platform_device *parent,
				struct bcma_device *core)
{
	struct device_node *node;

	node = bcma_of_find_child_device(parent, core);
	if (node)
		core->dev.of_node = node;
}
#else
static void bcma_of_fill_device(struct platform_device *parent,
				struct bcma_device *core)
{
}
#endif /* CONFIG_OF */

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

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_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);
	}

	/* 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)
{
	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);

	bcma_core_chipcommon_b_free(&bus->drv_cc_b);

	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;

	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;

	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;
}
fs_initcall(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>
d57ef3a6	10	#include <linux/platform_device.h>
8369ae33	11	#include <linux/bcma/bcma.h>
eef72699	12	#include <linux/slab.h>
2101e533	13	#include <linux/of_address.h>
8369ae33 RM	14
	15	MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
	16	MODULE_LICENSE("GPL");
	17
8f9ada4f HM	18	/* contains the number the next bus should get. */
	19	static unsigned int bcma_bus_next_num = 0;
	20
	21	/* bcma_buses_mutex locks the bcma_bus_next_num */
	22	static DEFINE_MUTEX(bcma_buses_mutex);
	23
8369ae33 RM	24	static int bcma_bus_match(struct device dev, struct device_driver drv);
	25	static int bcma_device_probe(struct device *dev);
	26	static int bcma_device_remove(struct device *dev);
886b66ef	27	static int bcma_device_uevent(struct device dev, struct kobj_uevent_env env);
8369ae33 RM	28
	29	static ssize_t manuf_show(struct device dev, struct device_attribute attr, char *buf)
	30	{
	31	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	32	return sprintf(buf, "0x%03X\n", core->id.manuf);
	33	}
fdcf4f81 GKH	34	static DEVICE_ATTR_RO(manuf);
fdcf4f81 GKH	35
8369ae33 RM	36	static ssize_t id_show(struct device dev, struct device_attribute attr, char *buf)
	37	{
	38	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	39	return sprintf(buf, "0x%03X\n", core->id.id);
	40	}
fdcf4f81 GKH	41	static DEVICE_ATTR_RO(id);
fdcf4f81 GKH	42
8369ae33 RM	43	static ssize_t rev_show(struct device dev, struct device_attribute attr, char *buf)
	44	{
	45	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	46	return sprintf(buf, "0x%02X\n", core->id.rev);
	47	}
fdcf4f81 GKH	48	static DEVICE_ATTR_RO(rev);
fdcf4f81 GKH	49
8369ae33 RM	50	static ssize_t class_show(struct device dev, struct device_attribute attr, char *buf)
	51	{
	52	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	53	return sprintf(buf, "0x%X\n", core->id.class);
	54	}
fdcf4f81 GKH	55	static DEVICE_ATTR_RO(class);
	56
	57	static struct attribute *bcma_device_attrs[] = {
	58	&dev_attr_manuf.attr,
	59	&dev_attr_id.attr,
	60	&dev_attr_rev.attr,
	61	&dev_attr_class.attr,
	62	NULL,
8369ae33	63	};
fdcf4f81	64	ATTRIBUTE_GROUPS(bcma_device);
8369ae33 RM	65
	66	static struct bus_type bcma_bus_type = {
	67	.name = "bcma",
	68	.match = bcma_bus_match,
	69	.probe = bcma_device_probe,
	70	.remove = bcma_device_remove,
886b66ef	71	.uevent = bcma_device_uevent,
fdcf4f81	72	.dev_groups = bcma_device_groups,
8369ae33 RM	73	};
8369ae33 RM	74
6d5cfc9f RM	75	static u16 bcma_cc_core_id(struct bcma_bus *bus)
	76	{
	77	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
	78	return BCMA_CORE_4706_CHIPCOMMON;
	79	return BCMA_CORE_CHIPCOMMON;
	80	}
	81
929a03ae HM	82	struct bcma_device bcma_find_core_unit(struct bcma_bus bus, u16 coreid,
929a03ae HM	83	u8 unit)
dfae7143 HM	84	{
	85	struct bcma_device *core;
	86
	87	list_for_each_entry(core, &bus->cores, list) {
	88	if (core->id.id == coreid && core->core_unit == unit)
	89	return core;
	90	}
	91	return NULL;
	92	}
b2395b8a	93	EXPORT_SYMBOL_GPL(bcma_find_core_unit);
dfae7143	94
88f9b65d RM	95	bool bcma_wait_value(struct bcma_device *core, u16 reg, u32 mask, u32 value,
	96	int timeout)
	97	{
	98	unsigned long deadline = jiffies + timeout;
	99	u32 val;
	100
	101	do {
	102	val = bcma_read32(core, reg);
	103	if ((val & mask) == value)
	104	return true;
	105	cpu_relax();
	106	udelay(10);
	107	} while (!time_after_eq(jiffies, deadline));
	108
	109	bcma_warn(core->bus, "Timeout waiting for register 0x%04X!\n", reg);
	110
	111	return false;
	112	}
	113
8369ae33 RM	114	static void bcma_release_core_dev(struct device *dev)
	115	{
	116	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
ecd177c2 HM	117	if (core->io_addr)
	118	iounmap(core->io_addr);
	119	if (core->io_wrap)
	120	iounmap(core->io_wrap);
8369ae33 RM	121	kfree(core);
	122	}
	123
37a7f876 RM	124	static bool bcma_is_core_needed_early(u16 core_id)
	125	{
	126	switch (core_id) {
	127	case BCMA_CORE_NS_NAND:
	128	case BCMA_CORE_NS_QSPI:
	129	return true;
	130	}
	131
	132	return false;
	133	}
	134
2101e533 HM	135	#ifdef CONFIG_OF
	136	static struct device_node bcma_of_find_child_device(struct platform_device parent,
	137	struct bcma_device *core)
	138	{
	139	struct device_node *node;
	140	u64 size;
	141	const __be32 *reg;
	142
	143	if (!parent \|\| !parent->dev.of_node)
	144	return NULL;
	145
	146	for_each_child_of_node(parent->dev.of_node, node) {
	147	reg = of_get_address(node, 0, &size, NULL);
	148	if (!reg)
	149	continue;
	150	if (of_translate_address(node, reg) == core->addr)
	151	return node;
	152	}
	153	return NULL;
	154	}
	155
	156	static void bcma_of_fill_device(struct platform_device *parent,
	157	struct bcma_device *core)
	158	{
	159	struct device_node *node;
	160
	161	node = bcma_of_find_child_device(parent, core);
	162	if (node)
	163	core->dev.of_node = node;
	164	}
	165	#else
	166	static void bcma_of_fill_device(struct platform_device *parent,
	167	struct bcma_device *core)
	168	{
	169	}
	170	#endif /* CONFIG_OF */
	171
ab54bc84	172	void bcma_prepare_core(struct bcma_bus bus, struct bcma_device core)
6e094bd8	173	{
6e094bd8 RM	174	core->dev.release = bcma_release_core_dev;
	175	core->dev.bus = &bcma_bus_type;
	176	dev_set_name(&core->dev, "bcma%d:%d", bus->num, core->core_index);
	177
	178	switch (bus->hosttype) {
	179	case BCMA_HOSTTYPE_PCI:
	180	core->dev.parent = &bus->host_pci->dev;
	181	core->dma_dev = &bus->host_pci->dev;
	182	core->irq = bus->host_pci->irq;
	183	break;
	184	case BCMA_HOSTTYPE_SOC:
	185	core->dev.dma_mask = &core->dev.coherent_dma_mask;
2101e533 HM	186	if (bus->host_pdev) {
	187	core->dma_dev = &bus->host_pdev->dev;
	188	core->dev.parent = &bus->host_pdev->dev;
	189	bcma_of_fill_device(bus->host_pdev, core);
	190	} else {
	191	core->dma_dev = &core->dev;
	192	}
6e094bd8 RM	193	break;
	194	case BCMA_HOSTTYPE_SDIO:
	195	break;
	196	}
ab54bc84 RM	197	}
	198
	199	static void bcma_register_core(struct bcma_bus bus, struct bcma_device core)
	200	{
	201	int err;
6e094bd8 RM	202
	203	err = device_register(&core->dev);
	204	if (err) {
	205	bcma_err(bus, "Could not register dev for core 0x%03X\n",
	206	core->id.id);
	207	put_device(&core->dev);
	208	return;
	209	}
	210	core->dev_registered = true;
	211	}
	212
	213	static int bcma_register_devices(struct bcma_bus *bus)
8369ae33 RM	214	{
8369ae33 RM	215	struct bcma_device *core;
6e094bd8	216	int err;
8369ae33 RM	217
	218	list_for_each_entry(core, &bus->cores, list) {
	219	/* We support that cores ourself */
	220	switch (core->id.id) {
6d5cfc9f	221	case BCMA_CORE_4706_CHIPCOMMON:
8369ae33	222	case BCMA_CORE_CHIPCOMMON:
1716bcf3	223	case BCMA_CORE_NS_CHIPCOMMON_B:
8369ae33 RM	224	case BCMA_CORE_PCI:
8369ae33 RM	225	case BCMA_CORE_PCIE:
f473832f	226	case BCMA_CORE_PCIE2:
21e0534a	227	case BCMA_CORE_MIPS_74K:
e1ac4b40	228	case BCMA_CORE_4706_MAC_GBIT_COMMON:
8369ae33 RM	229	continue;
	230	}
	231
37a7f876 RM	232	/* Early cores were already registered */
	233	if (bcma_is_core_needed_early(core->id.id))
	234	continue;
	235
10419d08 RM	236	/* Only first GMAC core on BCM4706 is connected and working */
	237	if (core->id.id == BCMA_CORE_4706_MAC_GBIT &&
	238	core->core_unit > 0)
	239	continue;
	240
6e094bd8	241	bcma_register_core(bus, core);
8369ae33 RM	242	}
8369ae33 RM	243
73e4dbe4 RM	244	#ifdef CONFIG_BCMA_DRIVER_MIPS
	245	if (bus->drv_cc.pflash.present) {
	246	err = platform_device_register(&bcma_pflash_dev);
	247	if (err)
	248	bcma_err(bus, "Error registering parallel flash\n");
	249	}
	250	#endif
	251
d57ef3a6 RM	252	#ifdef CONFIG_BCMA_SFLASH
	253	if (bus->drv_cc.sflash.present) {
	254	err = platform_device_register(&bcma_sflash_dev);
	255	if (err)
	256	bcma_err(bus, "Error registering serial flash\n");
	257	}
	258	#endif
	259
371a0044 RM	260	#ifdef CONFIG_BCMA_NFLASH
	261	if (bus->drv_cc.nflash.present) {
	262	err = platform_device_register(&bcma_nflash_dev);
	263	if (err)
	264	bcma_err(bus, "Error registering NAND flash\n");
	265	}
	266	#endif
cf0936b0 HM	267	err = bcma_gpio_init(&bus->drv_cc);
	268	if (err == -ENOTSUPP)
	269	bcma_debug(bus, "GPIO driver not activated\n");
	270	else if (err)
	271	bcma_err(bus, "Error registering GPIO driver: %i\n", err);
371a0044	272
a4855f39 HM	273	if (bus->hosttype == BCMA_HOSTTYPE_SOC) {
	274	err = bcma_chipco_watchdog_register(&bus->drv_cc);
	275	if (err)
	276	bcma_err(bus, "Error registering watchdog driver\n");
	277	}
	278
8369ae33 RM	279	return 0;
	280	}
	281
	282	static void bcma_unregister_cores(struct bcma_bus *bus)
	283	{
1fffa905	284	struct bcma_device core, tmp;
8369ae33	285
1fffa905 PH	286	list_for_each_entry_safe(core, tmp, &bus->cores, list) {
1fffa905 PH	287	list_del(&core->list);
8369ae33 RM	288	if (core->dev_registered)
	289	device_unregister(&core->dev);
	290	}
a4855f39 HM	291	if (bus->hosttype == BCMA_HOSTTYPE_SOC)
a4855f39 HM	292	platform_device_unregister(bus->drv_cc.watchdog);
8369ae33 RM	293	}
8369ae33 RM	294
0f58a01d	295	int bcma_bus_register(struct bcma_bus *bus)
8369ae33 RM	296	{
	297	int err;
	298	struct bcma_device *core;
	299
8f9ada4f HM	300	mutex_lock(&bcma_buses_mutex);
	301	bus->num = bcma_bus_next_num++;
	302	mutex_unlock(&bcma_buses_mutex);
	303
8369ae33 RM	304	/* Scan for devices (cores) */
	305	err = bcma_bus_scan(bus);
	306	if (err) {
3d9d8af3	307	bcma_err(bus, "Failed to scan: %d\n", err);
1cabf7db	308	return err;
8369ae33 RM	309	}
8369ae33 RM	310
30cfb023 HM	311	/* Early init CC core */
	312	core = bcma_find_core(bus, bcma_cc_core_id(bus));
	313	if (core) {
	314	bus->drv_cc.core = core;
	315	bcma_core_chipcommon_early_init(&bus->drv_cc);
	316	}
	317
37a7f876 RM	318	/* Cores providing flash access go before SPROM init */
	319	list_for_each_entry(core, &bus->cores, list) {
	320	if (bcma_is_core_needed_early(core->id.id))
	321	bcma_register_core(bus, core);
	322	}
	323
30cfb023 HM	324	/* Try to get SPROM */
	325	err = bcma_sprom_get(bus);
	326	if (err == -ENOENT) {
	327	bcma_err(bus, "No SPROM available\n");
	328	} else if (err)
	329	bcma_err(bus, "Failed to get SPROM: %d\n", err);
	330
8369ae33	331	/* Init CC core */
6d5cfc9f	332	core = bcma_find_core(bus, bcma_cc_core_id(bus));
8369ae33 RM	333	if (core) {
	334	bus->drv_cc.core = core;
	335	bcma_core_chipcommon_init(&bus->drv_cc);
	336	}
	337
1716bcf3 HM	338	/* Init CC core */
	339	core = bcma_find_core(bus, BCMA_CORE_NS_CHIPCOMMON_B);
	340	if (core) {
	341	bus->drv_cc_b.core = core;
	342	bcma_core_chipcommon_b_init(&bus->drv_cc_b);
	343	}
	344
21e0534a HM	345	/* Init MIPS core */
	346	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
	347	if (core) {
	348	bus->drv_mips.core = core;
	349	bcma_core_mips_init(&bus->drv_mips);
	350	}
	351
8369ae33	352	/* Init PCIE core */
dfae7143 HM	353	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 0);
	354	if (core) {
	355	bus->drv_pci[0].core = core;
	356	bcma_core_pci_init(&bus->drv_pci[0]);
	357	}
	358
	359	/* Init PCIE core */
	360	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE, 1);
8369ae33	361	if (core) {
dfae7143 HM	362	bus->drv_pci[1].core = core;
dfae7143 HM	363	bcma_core_pci_init(&bus->drv_pci[1]);
8369ae33 RM	364	}
8369ae33 RM	365
f473832f RM	366	/* Init PCIe Gen 2 core */
	367	core = bcma_find_core_unit(bus, BCMA_CORE_PCIE2, 0);
	368	if (core) {
	369	bus->drv_pcie2.core = core;
	370	bcma_core_pcie2_init(&bus->drv_pcie2);
	371	}
	372
e1ac4b40 RM	373	/* Init GBIT MAC COMMON core */
	374	core = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
	375	if (core) {
	376	bus->drv_gmac_cmn.core = core;
	377	bcma_core_gmac_cmn_init(&bus->drv_gmac_cmn);
	378	}
	379
8369ae33	380	/* Register found cores */
6e094bd8	381	bcma_register_devices(bus);
8369ae33	382
3d9d8af3	383	bcma_info(bus, "Bus registered\n");
8369ae33 RM	384
	385	return 0;
	386	}
8369ae33 RM	387
	388	void bcma_bus_unregister(struct bcma_bus *bus)
	389	{
ee915927	390	struct bcma_device *cores[3];
c50ae947 HM	391	int err;
	392
	393	err = bcma_gpio_unregister(&bus->drv_cc);
	394	if (err == -EBUSY)
	395	bcma_err(bus, "Some GPIOs are still in use.\n");
	396	else if (err)
	397	bcma_err(bus, "Can not unregister GPIO driver: %i\n", err);
ee915927	398
1716bcf3 HM	399	bcma_core_chipcommon_b_free(&bus->drv_cc_b);
1716bcf3 HM	400
ee915927 SSJ	401	cores[0] = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
	402	cores[1] = bcma_find_core(bus, BCMA_CORE_PCIE);
	403	cores[2] = bcma_find_core(bus, BCMA_CORE_4706_MAC_GBIT_COMMON);
	404
8369ae33	405	bcma_unregister_cores(bus);
ee915927 SSJ	406
	407	kfree(cores[2]);
	408	kfree(cores[1]);
	409	kfree(cores[0]);
8369ae33	410	}
8369ae33	411
517f43e5 HM	412	int __init bcma_bus_early_register(struct bcma_bus *bus,
	413	struct bcma_device *core_cc,
	414	struct bcma_device *core_mips)
	415	{
	416	int err;
	417	struct bcma_device *core;
	418	struct bcma_device_id match;
	419
517f43e5	420	match.manuf = BCMA_MANUF_BCM;
6d5cfc9f	421	match.id = bcma_cc_core_id(bus);
517f43e5 HM	422	match.class = BCMA_CL_SIM;
	423	match.rev = BCMA_ANY_REV;
	424
	425	/* Scan for chip common core */
	426	err = bcma_bus_scan_early(bus, &match, core_cc);
	427	if (err) {
3d9d8af3	428	bcma_err(bus, "Failed to scan for common core: %d\n", err);
517f43e5 HM	429	return -1;
	430	}
	431
	432	match.manuf = BCMA_MANUF_MIPS;
	433	match.id = BCMA_CORE_MIPS_74K;
	434	match.class = BCMA_CL_SIM;
	435	match.rev = BCMA_ANY_REV;
	436
	437	/* Scan for mips core */
	438	err = bcma_bus_scan_early(bus, &match, core_mips);
	439	if (err) {
3d9d8af3	440	bcma_err(bus, "Failed to scan for mips core: %d\n", err);
517f43e5 HM	441	return -1;
	442	}
	443
49655bb8	444	/* Early init CC core */
6d5cfc9f	445	core = bcma_find_core(bus, bcma_cc_core_id(bus));
517f43e5 HM	446	if (core) {
517f43e5 HM	447	bus->drv_cc.core = core;
49655bb8	448	bcma_core_chipcommon_early_init(&bus->drv_cc);
517f43e5 HM	449	}
517f43e5 HM	450
49655bb8	451	/* Early init MIPS core */
21e0534a HM	452	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
	453	if (core) {
	454	bus->drv_mips.core = core;
49655bb8	455	bcma_core_mips_early_init(&bus->drv_mips);
21e0534a HM	456	}
21e0534a HM	457
3d9d8af3	458	bcma_info(bus, "Early bus registered\n");
517f43e5 HM	459
	460	return 0;
	461	}
	462
775ab521	463	#ifdef CONFIG_PM
685a4ef0 LT	464	int bcma_bus_suspend(struct bcma_bus *bus)
685a4ef0 LT	465	{
7d5869e7 LT	466	struct bcma_device *core;
	467
	468	list_for_each_entry(core, &bus->cores, list) {
	469	struct device_driver *drv = core->dev.driver;
	470	if (drv) {
	471	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
	472	if (adrv->suspend)
	473	adrv->suspend(core);
	474	}
	475	}
685a4ef0 LT	476	return 0;
	477	}
	478
775ab521 RM	479	int bcma_bus_resume(struct bcma_bus *bus)
	480	{
	481	struct bcma_device *core;
	482
	483	/* Init CC core */
6d5cfc9f	484	if (bus->drv_cc.core) {
775ab521 RM	485	bus->drv_cc.setup_done = false;
	486	bcma_core_chipcommon_init(&bus->drv_cc);
	487	}
	488
7d5869e7 LT	489	list_for_each_entry(core, &bus->cores, list) {
	490	struct device_driver *drv = core->dev.driver;
	491	if (drv) {
	492	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
	493	if (adrv->resume)
	494	adrv->resume(core);
	495	}
	496	}
	497
775ab521 RM	498	return 0;
	499	}
	500	#endif
	501
8369ae33 RM	502	int __bcma_driver_register(struct bcma_driver drv, struct module owner)
	503	{
	504	drv->drv.name = drv->name;
	505	drv->drv.bus = &bcma_bus_type;
	506	drv->drv.owner = owner;
	507
	508	return driver_register(&drv->drv);
	509	}
	510	EXPORT_SYMBOL_GPL(__bcma_driver_register);
	511
	512	void bcma_driver_unregister(struct bcma_driver *drv)
	513	{
	514	driver_unregister(&drv->drv);
	515	}
	516	EXPORT_SYMBOL_GPL(bcma_driver_unregister);
	517
	518	static int bcma_bus_match(struct device dev, struct device_driver drv)
	519	{
	520	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	521	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
	522	const struct bcma_device_id *cid = &core->id;
	523	const struct bcma_device_id *did;
	524
	525	for (did = adrv->id_table; did->manuf \|\| did->id \|\| did->rev; did++) {
	526	if ((did->manuf == cid->manuf \|\| did->manuf == BCMA_ANY_MANUF) &&
	527	(did->id == cid->id \|\| did->id == BCMA_ANY_ID) &&
	528	(did->rev == cid->rev \|\| did->rev == BCMA_ANY_REV) &&
	529	(did->class == cid->class \|\| did->class == BCMA_ANY_CLASS))
	530	return 1;
	531	}
	532	return 0;
	533	}
	534
	535	static int bcma_device_probe(struct device *dev)
	536	{
	537	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	538	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
	539	drv);
	540	int err = 0;
	541
	542	if (adrv->probe)
	543	err = adrv->probe(core);
	544
	545	return err;
	546	}
	547
	548	static int bcma_device_remove(struct device *dev)
	549	{
	550	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	551	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
	552	drv);
	553
	554	if (adrv->remove)
	555	adrv->remove(core);
	556
	557	return 0;
	558	}
	559
886b66ef DW	560	static int bcma_device_uevent(struct device dev, struct kobj_uevent_env env)
	561	{
	562	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	563
	564	return add_uevent_var(env,
	565	"MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
	566	core->id.manuf, core->id.id,
	567	core->id.rev, core->id.class);
	568	}
	569
8369ae33 RM	570	static int __init bcma_modinit(void)
	571	{
	572	int err;
	573
	574	err = bus_register(&bcma_bus_type);
	575	if (err)
	576	return err;
	577
2101e533 HM	578	err = bcma_host_soc_register_driver();
	579	if (err) {
	580	pr_err("SoC host initialization failed\n");
	581	err = 0;
	582	}
8369ae33 RM	583	#ifdef CONFIG_BCMA_HOST_PCI
	584	err = bcma_host_pci_init();
	585	if (err) {
	586	pr_err("PCI host initialization failed\n");
	587	err = 0;
	588	}
	589	#endif
	590
	591	return err;
	592	}
	593	fs_initcall(bcma_modinit);
	594
	595	static void __exit bcma_modexit(void)
	596	{
	597	#ifdef CONFIG_BCMA_HOST_PCI
	598	bcma_host_pci_exit();
	599	#endif
2101e533	600	bcma_host_soc_unregister_driver();
8369ae33 RM	601	bus_unregister(&bcma_bus_type);
	602	}
	603	module_exit(bcma_modexit)