drivers/bcma/main.c - kernel/msm-4.9 - Gitiles

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

 #include "bcma_private.h"
 #include <linux/module.h>
 #include <linux/bcma/bcma.h>
 #include <linux/slab.h>

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

 /* contains the number the next bus should get. */
 static unsigned int bcma_bus_next_num = 0;

 /* bcma_buses_mutex locks the bcma_bus_next_num */
 static DEFINE_MUTEX(bcma_buses_mutex);

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

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

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

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

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

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

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

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

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

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

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

 	return 0;
 }

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

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

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

 	mutex_lock(&bcma_buses_mutex);
 	bus->num = bcma_bus_next_num++;
 	mutex_unlock(&bcma_buses_mutex);

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

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

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

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

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

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

 	pr_info("Bus registered\n");

 	return 0;
 }

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

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

 	bcma_init_bus(bus);

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

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

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

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

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

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

 	pr_info("Early bus registered\n");

 	return 0;
 }

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

 	list_for_each_entry(core, &bus->cores, list) {
 		struct device_driver *drv = core->dev.driver;
 		if (drv) {
 			struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 			if (adrv->resume)
 				adrv->resume(core);
 		}
 	}

 	return 0;
 }
 #endif

 int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
 {
 	drv->drv.name = drv->name;
 	drv->drv.bus = &bcma_bus_type;
 	drv->drv.owner = owner;

 	return driver_register(&drv->drv);
 }
 EXPORT_SYMBOL_GPL(__bcma_driver_register);

 void bcma_driver_unregister(struct bcma_driver *drv)
 {
 	driver_unregister(&drv->drv);
 }
 EXPORT_SYMBOL_GPL(bcma_driver_unregister);

 static int bcma_bus_match(struct device *dev, struct device_driver *drv)
 {
 	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
 	const struct bcma_device_id *cid = &core->id;
 	const struct bcma_device_id *did;

 	for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
 	    if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
 		(did->id == cid->id || did->id == BCMA_ANY_ID) &&
 		(did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
 		(did->class == cid->class || did->class == BCMA_ANY_CLASS))
 			return 1;
 	}
 	return 0;
 }

 static int bcma_device_probe(struct device *dev)
 {
 	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
 					       drv);
 	int err = 0;

 	if (adrv->probe)
 		err = adrv->probe(core);

 	return err;
 }

 static int bcma_device_remove(struct device *dev)
 {
 	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
 	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
 					       drv);

 	if (adrv->remove)
 		adrv->remove(core);

 	return 0;
 }

 static int bcma_device_uevent(struct device *dev, struct kobj_uevent_env *env)
 {
 	struct bcma_device *core = container_of(dev, struct bcma_device, dev);

 	return add_uevent_var(env,
 			      "MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
 			      core->id.manuf, core->id.id,
 			      core->id.rev, core->id.class);
 }

 static int __init bcma_modinit(void)
 {
 	int err;

 	err = bus_register(&bcma_bus_type);
 	if (err)
 		return err;

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

 	return err;
 }
 fs_initcall(bcma_modinit);

 static void __exit bcma_modexit(void)
 {
 #ifdef CONFIG_BCMA_HOST_PCI
 	bcma_host_pci_exit();
 #endif
 	bus_unregister(&bcma_bus_type);
 }
 module_exit(bcma_modexit)
	/*
	* Broadcom specific AMBA
	* Bus subsystem
	*
	* Licensed under the GNU/GPL. See COPYING for details.
	*/

	#include "bcma_private.h"
	#include <linux/module.h>
	#include <linux/bcma/bcma.h>
	#include <linux/slab.h>

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

	/* contains the number the next bus should get. */
	static unsigned int bcma_bus_next_num = 0;

	/* bcma_buses_mutex locks the bcma_bus_next_num */
	static DEFINE_MUTEX(bcma_buses_mutex);

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

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

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

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

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

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

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

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

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

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

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

	return 0;
	}

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

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

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

	mutex_lock(&bcma_buses_mutex);
	bus->num = bcma_bus_next_num++;
	mutex_unlock(&bcma_buses_mutex);

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

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

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

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

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

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

	pr_info("Bus registered\n");

	return 0;
	}

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

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

	bcma_init_bus(bus);

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

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

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

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

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

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

	pr_info("Early bus registered\n");

	return 0;
	}

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

	list_for_each_entry(core, &bus->cores, list) {
	struct device_driver *drv = core->dev.driver;
	if (drv) {
	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
	if (adrv->resume)
	adrv->resume(core);
	}
	}

	return 0;
	}
	#endif

	int __bcma_driver_register(struct bcma_driver drv, struct module owner)
	{
	drv->drv.name = drv->name;
	drv->drv.bus = &bcma_bus_type;
	drv->drv.owner = owner;

	return driver_register(&drv->drv);
	}
	EXPORT_SYMBOL_GPL(__bcma_driver_register);

	void bcma_driver_unregister(struct bcma_driver *drv)
	{
	driver_unregister(&drv->drv);
	}
	EXPORT_SYMBOL_GPL(bcma_driver_unregister);

	static int bcma_bus_match(struct device dev, struct device_driver drv)
	{
	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
	const struct bcma_device_id *cid = &core->id;
	const struct bcma_device_id *did;

	for (did = adrv->id_table; did->manuf \|\| did->id \|\| did->rev; did++) {
	if ((did->manuf == cid->manuf \|\| did->manuf == BCMA_ANY_MANUF) &&
	(did->id == cid->id \|\| did->id == BCMA_ANY_ID) &&
	(did->rev == cid->rev \|\| did->rev == BCMA_ANY_REV) &&
	(did->class == cid->class \|\| did->class == BCMA_ANY_CLASS))
	return 1;
	}
	return 0;
	}

	static int bcma_device_probe(struct device *dev)
	{
	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
	drv);
	int err = 0;

	if (adrv->probe)
	err = adrv->probe(core);

	return err;
	}

	static int bcma_device_remove(struct device *dev)
	{
	struct bcma_device *core = container_of(dev, struct bcma_device, dev);
	struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
	drv);

	if (adrv->remove)
	adrv->remove(core);

	return 0;
	}

	static int bcma_device_uevent(struct device dev, struct kobj_uevent_env env)
	{
	struct bcma_device *core = container_of(dev, struct bcma_device, dev);

	return add_uevent_var(env,
	"MODALIAS=bcma:m%04Xid%04Xrev%02Xcl%02X",
	core->id.manuf, core->id.id,
	core->id.rev, core->id.class);
	}

	static int __init bcma_modinit(void)
	{
	int err;

	err = bus_register(&bcma_bus_type);
	if (err)
	return err;

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

	return err;
	}
	fs_initcall(bcma_modinit);

	static void __exit bcma_modexit(void)
	{
	#ifdef CONFIG_BCMA_HOST_PCI
	bcma_host_pci_exit();
	#endif
	bus_unregister(&bcma_bus_type);
	}
	module_exit(bcma_modexit)