[GitHub/mt8127/android_kernel_alcatel_ttab.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/bcma/bcma.h>
#include <linux/slab.h>

MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
MODULE_LICENSE("GPL");

static int bcma_bus_match(struct device *dev, struct device_driver *drv);
static int bcma_device_probe(struct device *dev);
static int bcma_device_remove(struct device *dev);
static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env);

static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	return sprintf(buf, "0x%03X\n", core->id.manuf);
}
static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	return sprintf(buf, "0x%03X\n", core->id.id);
}
static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	return sprintf(buf, "0x%02X\n", core->id.rev);
}
static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	return sprintf(buf, "0x%X\n", core->id.class);
}
static struct device_attribute bcma_device_attrs[] = {
	__ATTR_RO(manuf),
	__ATTR_RO(id),
	__ATTR_RO(rev),
	__ATTR_RO(class),
	__ATTR_NULL,
};

static struct bus_type bcma_bus_type = {
	.name		= "bcma",
	.match		= bcma_bus_match,
	.probe		= bcma_device_probe,
	.remove		= bcma_device_remove,
	.uevent		= bcma_device_uevent,
	.dev_attrs	= bcma_device_attrs,
};

static struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
{
	struct bcma_device *core;

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

static void bcma_release_core_dev(struct device *dev)
{
	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	if (core->io_addr)
		iounmap(core->io_addr);
	if (core->io_wrap)
		iounmap(core->io_wrap);
	kfree(core);
}

static int bcma_register_cores(struct bcma_bus *bus)
{
	struct bcma_device *core;
	int err, dev_id = 0;

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

		core->dev.release = bcma_release_core_dev;
		core->dev.bus = &bcma_bus_type;
		dev_set_name(&core->dev, "bcma%d:%d", 0/*bus->num*/, dev_id);

		switch (bus->hosttype) {
		case BCMA_HOSTTYPE_PCI:
			core->dev.parent = &bus->host_pci->dev;
			core->dma_dev = &bus->host_pci->dev;
			core->irq = bus->host_pci->irq;
			break;
		case BCMA_HOSTTYPE_SOC:
			core->dev.dma_mask = &core->dev.coherent_dma_mask;
			core->dma_dev = &core->dev;
			break;
		case BCMA_HOSTTYPE_SDIO:
			break;
		}

		err = device_register(&core->dev);
		if (err) {
			pr_err("Could not register dev for core 0x%03X\n",
			       core->id.id);
			continue;
		}
		core->dev_registered = true;
		dev_id++;
	}

	return 0;
}

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

	list_for_each_entry(core, &bus->cores, list) {
		if (core->dev_registered)
			device_unregister(&core->dev);
	}
}

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

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

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

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

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

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

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

	pr_info("Bus registered\n");

	return 0;
}

void bcma_bus_unregister(struct bcma_bus *bus)
{
	bcma_unregister_cores(bus);
}

int __init bcma_bus_early_register(struct bcma_bus *bus,
				   struct bcma_device *core_cc,
				   struct bcma_device *core_mips)
{
	int err;
	struct bcma_device *core;
	struct bcma_device_id match;

	bcma_init_bus(bus);

	match.manuf = BCMA_MANUF_BCM;
	match.id = BCMA_CORE_CHIPCOMMON;
	match.class = BCMA_CL_SIM;
	match.rev = BCMA_ANY_REV;

	/* Scan for chip common core */
	err = bcma_bus_scan_early(bus, &match, core_cc);
	if (err) {
		pr_err("Failed to scan for common core: %d\n", err);
		return -1;
	}

	match.manuf = BCMA_MANUF_MIPS;
	match.id = BCMA_CORE_MIPS_74K;
	match.class = BCMA_CL_SIM;
	match.rev = BCMA_ANY_REV;

	/* Scan for mips core */
	err = bcma_bus_scan_early(bus, &match, core_mips);
	if (err) {
		pr_err("Failed to scan for mips core: %d\n", err);
		return -1;
	}

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

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

	pr_info("Early bus registered\n");

	return 0;
}

#ifdef CONFIG_PM
int bcma_bus_suspend(struct bcma_bus *bus)
{
	return 0;
}

int bcma_bus_resume(struct bcma_bus *bus)
{
	struct bcma_device *core;

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

	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>
8369ae33	10	#include <linux/bcma/bcma.h>
eef72699	11	#include <linux/slab.h>
8369ae33 RM	12
	13	MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
	14	MODULE_LICENSE("GPL");
	15
	16	static int bcma_bus_match(struct device dev, struct device_driver drv);
	17	static int bcma_device_probe(struct device *dev);
	18	static int bcma_device_remove(struct device *dev);
886b66ef	19	static int bcma_device_uevent(struct device dev, struct kobj_uevent_env env);
8369ae33 RM	20
	21	static ssize_t manuf_show(struct device dev, struct device_attribute attr, char *buf)
	22	{
	23	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	24	return sprintf(buf, "0x%03X\n", core->id.manuf);
	25	}
	26	static ssize_t id_show(struct device dev, struct device_attribute attr, char *buf)
	27	{
	28	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	29	return sprintf(buf, "0x%03X\n", core->id.id);
	30	}
	31	static ssize_t rev_show(struct device dev, struct device_attribute attr, char *buf)
	32	{
	33	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	34	return sprintf(buf, "0x%02X\n", core->id.rev);
	35	}
	36	static ssize_t class_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%X\n", core->id.class);
	40	}
	41	static struct device_attribute bcma_device_attrs[] = {
	42	__ATTR_RO(manuf),
	43	__ATTR_RO(id),
	44	__ATTR_RO(rev),
	45	__ATTR_RO(class),
	46	__ATTR_NULL,
	47	};
	48
	49	static struct bus_type bcma_bus_type = {
	50	.name = "bcma",
	51	.match = bcma_bus_match,
	52	.probe = bcma_device_probe,
	53	.remove = bcma_device_remove,
886b66ef	54	.uevent = bcma_device_uevent,
8369ae33 RM	55	.dev_attrs = bcma_device_attrs,
	56	};
	57
	58	static struct bcma_device bcma_find_core(struct bcma_bus bus, u16 coreid)
	59	{
	60	struct bcma_device *core;
	61
	62	list_for_each_entry(core, &bus->cores, list) {
	63	if (core->id.id == coreid)
	64	return core;
	65	}
	66	return NULL;
	67	}
	68
	69	static void bcma_release_core_dev(struct device *dev)
	70	{
	71	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
ecd177c2 HM	72	if (core->io_addr)
	73	iounmap(core->io_addr);
	74	if (core->io_wrap)
	75	iounmap(core->io_wrap);
8369ae33 RM	76	kfree(core);
	77	}
	78
	79	static int bcma_register_cores(struct bcma_bus *bus)
	80	{
	81	struct bcma_device *core;
	82	int err, dev_id = 0;
	83
	84	list_for_each_entry(core, &bus->cores, list) {
	85	/* We support that cores ourself */
	86	switch (core->id.id) {
	87	case BCMA_CORE_CHIPCOMMON:
	88	case BCMA_CORE_PCI:
	89	case BCMA_CORE_PCIE:
21e0534a	90	case BCMA_CORE_MIPS_74K:
8369ae33 RM	91	continue;
	92	}
	93
	94	core->dev.release = bcma_release_core_dev;
	95	core->dev.bus = &bcma_bus_type;
	96	dev_set_name(&core->dev, "bcma%d:%d", 0/bus->num/, dev_id);
	97
	98	switch (bus->hosttype) {
	99	case BCMA_HOSTTYPE_PCI:
	100	core->dev.parent = &bus->host_pci->dev;
1bdcd095 RM	101	core->dma_dev = &bus->host_pci->dev;
1bdcd095 RM	102	core->irq = bus->host_pci->irq;
8369ae33	103	break;
ecd177c2 HM	104	case BCMA_HOSTTYPE_SOC:
	105	core->dev.dma_mask = &core->dev.coherent_dma_mask;
	106	core->dma_dev = &core->dev;
	107	break;
8369ae33 RM	108	case BCMA_HOSTTYPE_SDIO:
	109	break;
	110	}
	111
	112	err = device_register(&core->dev);
	113	if (err) {
	114	pr_err("Could not register dev for core 0x%03X\n",
	115	core->id.id);
	116	continue;
	117	}
	118	core->dev_registered = true;
	119	dev_id++;
	120	}
	121
	122	return 0;
	123	}
	124
	125	static void bcma_unregister_cores(struct bcma_bus *bus)
	126	{
	127	struct bcma_device *core;
	128
	129	list_for_each_entry(core, &bus->cores, list) {
	130	if (core->dev_registered)
	131	device_unregister(&core->dev);
	132	}
	133	}
	134
	135	int bcma_bus_register(struct bcma_bus *bus)
	136	{
	137	int err;
	138	struct bcma_device *core;
	139
	140	/* Scan for devices (cores) */
	141	err = bcma_bus_scan(bus);
	142	if (err) {
	143	pr_err("Failed to scan: %d\n", err);
	144	return -1;
	145	}
	146
	147	/* Init CC core */
	148	core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
	149	if (core) {
	150	bus->drv_cc.core = core;
	151	bcma_core_chipcommon_init(&bus->drv_cc);
	152	}
	153
21e0534a HM	154	/* Init MIPS core */
	155	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
	156	if (core) {
	157	bus->drv_mips.core = core;
	158	bcma_core_mips_init(&bus->drv_mips);
	159	}
	160
8369ae33 RM	161	/* Init PCIE core */
	162	core = bcma_find_core(bus, BCMA_CORE_PCIE);
	163	if (core) {
	164	bus->drv_pci.core = core;
	165	bcma_core_pci_init(&bus->drv_pci);
	166	}
	167
27f18dc2 RM	168	/* Try to get SPROM */
27f18dc2 RM	169	err = bcma_sprom_get(bus);
534e7a45 HM	170	if (err == -ENOENT) {
	171	pr_err("No SPROM available\n");
	172	} else if (err) {
27f18dc2 RM	173	pr_err("Failed to get SPROM: %d\n", err);
	174	return -ENOENT;
	175	}
	176
8369ae33 RM	177	/* Register found cores */
	178	bcma_register_cores(bus);
	179
	180	pr_info("Bus registered\n");
	181
	182	return 0;
	183	}
8369ae33 RM	184
	185	void bcma_bus_unregister(struct bcma_bus *bus)
	186	{
	187	bcma_unregister_cores(bus);
	188	}
8369ae33	189
517f43e5 HM	190	int __init bcma_bus_early_register(struct bcma_bus *bus,
	191	struct bcma_device *core_cc,
	192	struct bcma_device *core_mips)
	193	{
	194	int err;
	195	struct bcma_device *core;
	196	struct bcma_device_id match;
	197
	198	bcma_init_bus(bus);
	199
	200	match.manuf = BCMA_MANUF_BCM;
	201	match.id = BCMA_CORE_CHIPCOMMON;
	202	match.class = BCMA_CL_SIM;
	203	match.rev = BCMA_ANY_REV;
	204
	205	/* Scan for chip common core */
	206	err = bcma_bus_scan_early(bus, &match, core_cc);
	207	if (err) {
	208	pr_err("Failed to scan for common core: %d\n", err);
	209	return -1;
	210	}
	211
	212	match.manuf = BCMA_MANUF_MIPS;
	213	match.id = BCMA_CORE_MIPS_74K;
	214	match.class = BCMA_CL_SIM;
	215	match.rev = BCMA_ANY_REV;
	216
	217	/* Scan for mips core */
	218	err = bcma_bus_scan_early(bus, &match, core_mips);
	219	if (err) {
	220	pr_err("Failed to scan for mips core: %d\n", err);
	221	return -1;
	222	}
	223
	224	/* Init CC core */
	225	core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
	226	if (core) {
	227	bus->drv_cc.core = core;
	228	bcma_core_chipcommon_init(&bus->drv_cc);
	229	}
	230
21e0534a HM	231	/* Init MIPS core */
	232	core = bcma_find_core(bus, BCMA_CORE_MIPS_74K);
	233	if (core) {
	234	bus->drv_mips.core = core;
	235	bcma_core_mips_init(&bus->drv_mips);
	236	}
	237
517f43e5 HM	238	pr_info("Early bus registered\n");
	239
	240	return 0;
	241	}
	242
775ab521	243	#ifdef CONFIG_PM
685a4ef0 LT	244	int bcma_bus_suspend(struct bcma_bus *bus)
	245	{
	246	return 0;
	247	}
	248
775ab521 RM	249	int bcma_bus_resume(struct bcma_bus *bus)
	250	{
	251	struct bcma_device *core;
	252
	253	/* Init CC core */
	254	core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
	255	if (core) {
	256	bus->drv_cc.setup_done = false;
	257	bcma_core_chipcommon_init(&bus->drv_cc);
	258	}
	259
	260	return 0;
	261	}
	262	#endif
	263
8369ae33 RM	264	int __bcma_driver_register(struct bcma_driver drv, struct module owner)
	265	{
	266	drv->drv.name = drv->name;
	267	drv->drv.bus = &bcma_bus_type;
	268	drv->drv.owner = owner;
	269
	270	return driver_register(&drv->drv);
	271	}
	272	EXPORT_SYMBOL_GPL(__bcma_driver_register);
	273
	274	void bcma_driver_unregister(struct bcma_driver *drv)
	275	{
	276	driver_unregister(&drv->drv);
	277	}
	278	EXPORT_SYMBOL_GPL(bcma_driver_unregister);
	279
	280	static int bcma_bus_match(struct device dev, struct device_driver drv)
	281	{
	282	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	283	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
	284	const struct bcma_device_id *cid = &core->id;
	285	const struct bcma_device_id *did;
	286
	287	for (did = adrv->id_table; did->manuf \|\| did->id \|\| did->rev; did++) {
	288	if ((did->manuf == cid->manuf \|\| did->manuf == BCMA_ANY_MANUF) &&
	289	(did->id == cid->id \|\| did->id == BCMA_ANY_ID) &&
	290	(did->rev == cid->rev \|\| did->rev == BCMA_ANY_REV) &&
	291	(did->class == cid->class \|\| did->class == BCMA_ANY_CLASS))
	292	return 1;
	293	}
	294	return 0;
	295	}
	296
	297	static int bcma_device_probe(struct device *dev)
	298	{
	299	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	300	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
	301	drv);
	302	int err = 0;
	303
	304	if (adrv->probe)
	305	err = adrv->probe(core);
	306
	307	return err;
	308	}
	309
	310	static int bcma_device_remove(struct device *dev)
	311	{
	312	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	313	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
	314	drv);
	315
	316	if (adrv->remove)
	317	adrv->remove(core);
	318
	319	return 0;
	320	}
	321
886b66ef DW	322	static int bcma_device_uevent(struct device dev, struct kobj_uevent_env env)
	323	{
	324	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	325
	326	return add_uevent_var(env,
	327	"MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
	328	core->id.manuf, core->id.id,
	329	core->id.rev, core->id.class);
	330	}
	331
8369ae33 RM	332	static int __init bcma_modinit(void)
	333	{
	334	int err;
	335
	336	err = bus_register(&bcma_bus_type);
	337	if (err)
	338	return err;
	339
	340	#ifdef CONFIG_BCMA_HOST_PCI
	341	err = bcma_host_pci_init();
	342	if (err) {
	343	pr_err("PCI host initialization failed\n");
	344	err = 0;
	345	}
	346	#endif
	347
	348	return err;
	349	}
	350	fs_initcall(bcma_modinit);
	351
	352	static void __exit bcma_modexit(void)
	353	{
	354	#ifdef CONFIG_BCMA_HOST_PCI
	355	bcma_host_pci_exit();
	356	#endif
	357	bus_unregister(&bcma_bus_type);
	358	}
	359	module_exit(bcma_modexit)