[mirror_ubuntu-bionic-kernel.git] / arch / powerpc / kernel / of_platform.c

/*
 *    Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp.
 *			 <benh@kernel.crashing.org>
 *    and		 Arnd Bergmann, IBM Corp.
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version
 *  2 of the License, or (at your option) any later version.
 *
 */

#undef DEBUG

#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/slab.h>
#include <linux/pci.h>

#include <asm/errno.h>
#include <asm/dcr.h>
#include <asm/of_device.h>
#include <asm/of_platform.h>
#include <asm/topology.h>
#include <asm/pci-bridge.h>
#include <asm/ppc-pci.h>
#include <asm/atomic.h>

/*
 * The list of OF IDs below is used for matching bus types in the
 * system whose devices are to be exposed as of_platform_devices.
 *
 * This is the default list valid for most platforms. This file provides
 * functions who can take an explicit list if necessary though
 *
 * The search is always performed recursively looking for children of
 * the provided device_node and recursively if such a children matches
 * a bus type in the list
 */

static struct of_device_id of_default_bus_ids[] = {
	{ .type = "soc", },
	{ .compatible = "soc", },
	{ .type = "spider", },
	{ .type = "axon", },
	{ .type = "plb5", },
	{ .type = "plb4", },
	{ .type = "opb", },
	{ .type = "ebc", },
	{},
};

static atomic_t bus_no_reg_magic;

struct bus_type of_platform_bus_type = {
       .uevent	= of_device_uevent,
};
EXPORT_SYMBOL(of_platform_bus_type);

static int __init of_bus_driver_init(void)
{
	return of_bus_type_init(&of_platform_bus_type, "of_platform");
}

postcore_initcall(of_bus_driver_init);

int of_register_platform_driver(struct of_platform_driver *drv)
{
	/* initialize common driver fields */
	drv->driver.name = drv->name;
	drv->driver.bus = &of_platform_bus_type;

	/* register with core */
	return driver_register(&drv->driver);
}
EXPORT_SYMBOL(of_register_platform_driver);

void of_unregister_platform_driver(struct of_platform_driver *drv)
{
	driver_unregister(&drv->driver);
}
EXPORT_SYMBOL(of_unregister_platform_driver);

static void of_platform_make_bus_id(struct of_device *dev)
{
	struct device_node *node = dev->node;
	char *name = dev->dev.bus_id;
	const u32 *reg;
	u64 addr;
	int magic;

	/*
	 * If it's a DCR based device, use 'd' for native DCRs
	 * and 'D' for MMIO DCRs.
	 */
#ifdef CONFIG_PPC_DCR
	reg = of_get_property(node, "dcr-reg", NULL);
	if (reg) {
#ifdef CONFIG_PPC_DCR_NATIVE
		snprintf(name, BUS_ID_SIZE, "d%x.%s",
			 *reg, node->name);
#else /* CONFIG_PPC_DCR_NATIVE */
		addr = of_translate_dcr_address(node, *reg, NULL);
		if (addr != OF_BAD_ADDR) {
			snprintf(name, BUS_ID_SIZE,
				 "D%llx.%s", (unsigned long long)addr,
				 node->name);
			return;
		}
#endif /* !CONFIG_PPC_DCR_NATIVE */
	}
#endif /* CONFIG_PPC_DCR */

	/*
	 * For MMIO, get the physical address
	 */
	reg = of_get_property(node, "reg", NULL);
	if (reg) {
		addr = of_translate_address(node, reg);
		if (addr != OF_BAD_ADDR) {
			snprintf(name, BUS_ID_SIZE,
				 "%llx.%s", (unsigned long long)addr,
				 node->name);
			return;
		}
	}

	/*
	 * No BusID, use the node name and add a globally incremented
	 * counter (and pray...)
	 */
	magic = atomic_add_return(1, &bus_no_reg_magic);
	snprintf(name, BUS_ID_SIZE, "%s.%d", node->name, magic - 1);
}

struct of_device* of_platform_device_create(struct device_node *np,
					    const char *bus_id,
					    struct device *parent)
{
	struct of_device *dev;

	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	if (!dev)
		return NULL;

	dev->node = of_node_get(np);
	dev->dma_mask = 0xffffffffUL;
	dev->dev.dma_mask = &dev->dma_mask;
	dev->dev.parent = parent;
	dev->dev.bus = &of_platform_bus_type;
	dev->dev.release = of_release_dev;
	dev->dev.archdata.of_node = np;
	dev->dev.archdata.numa_node = of_node_to_nid(np);

	/* We do not fill the DMA ops for platform devices by default.
	 * This is currently the responsibility of the platform code
	 * to do such, possibly using a device notifier
	 */

	if (bus_id)
		strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE);
	else
		of_platform_make_bus_id(dev);

	if (of_device_register(dev) != 0) {
		kfree(dev);
		return NULL;
	}

	return dev;
}
EXPORT_SYMBOL(of_platform_device_create);


/**
 * of_platform_bus_create - Create an OF device for a bus node and all its
 * children. Optionally recursively instanciate matching busses.
 * @bus: device node of the bus to instanciate
 * @matches: match table, NULL to use the default, OF_NO_DEEP_PROBE to
 * disallow recursive creation of child busses
 */
static int of_platform_bus_create(struct device_node *bus,
				  struct of_device_id *matches,
				  struct device *parent)
{
	struct device_node *child;
	struct of_device *dev;
	int rc = 0;

	for (child = NULL; (child = of_get_next_child(bus, child)); ) {
		pr_debug("   create child: %s\n", child->full_name);
		dev = of_platform_device_create(child, NULL, parent);
		if (dev == NULL)
			rc = -ENOMEM;
		else if (!of_match_node(matches, child))
			continue;
		if (rc == 0) {
			pr_debug("   and sub busses\n");
			rc = of_platform_bus_create(child, matches, &dev->dev);
		} if (rc) {
			of_node_put(child);
			break;
		}
	}
	return rc;
}

/**
 * of_platform_bus_probe - Probe the device-tree for platform busses
 * @root: parent of the first level to probe or NULL for the root of the tree
 * @matches: match table, NULL to use the default
 * @parent: parent to hook devices from, NULL for toplevel
 *
 * Note that children of the provided root are not instanciated as devices
 * unless the specified root itself matches the bus list and is not NULL.
 */

int of_platform_bus_probe(struct device_node *root,
			  struct of_device_id *matches,
			  struct device *parent)
{
	struct device_node *child;
	struct of_device *dev;
	int rc = 0;

	if (matches == NULL)
		matches = of_default_bus_ids;
	if (matches == OF_NO_DEEP_PROBE)
		return -EINVAL;
	if (root == NULL)
		root = of_find_node_by_path("/");
	else
		of_node_get(root);

	pr_debug("of_platform_bus_probe()\n");
	pr_debug(" starting at: %s\n", root->full_name);

	/* Do a self check of bus type, if there's a match, create
	 * children
	 */
	if (of_match_node(matches, root)) {
		pr_debug(" root match, create all sub devices\n");
		dev = of_platform_device_create(root, NULL, parent);
		if (dev == NULL) {
			rc = -ENOMEM;
			goto bail;
		}
		pr_debug(" create all sub busses\n");
		rc = of_platform_bus_create(root, matches, &dev->dev);
		goto bail;
	}
	for (child = NULL; (child = of_get_next_child(root, child)); ) {
		if (!of_match_node(matches, child))
			continue;

		pr_debug("  match: %s\n", child->full_name);
		dev = of_platform_device_create(child, NULL, parent);
		if (dev == NULL)
			rc = -ENOMEM;
		else
			rc = of_platform_bus_create(child, matches, &dev->dev);
		if (rc) {
			of_node_put(child);
			break;
		}
	}
 bail:
	of_node_put(root);
	return rc;
}
EXPORT_SYMBOL(of_platform_bus_probe);

static int of_dev_node_match(struct device *dev, void *data)
{
	return to_of_device(dev)->node == data;
}

struct of_device *of_find_device_by_node(struct device_node *np)
{
	struct device *dev;

	dev = bus_find_device(&of_platform_bus_type,
			      NULL, np, of_dev_node_match);
	if (dev)
		return to_of_device(dev);
	return NULL;
}
EXPORT_SYMBOL(of_find_device_by_node);

static int of_dev_phandle_match(struct device *dev, void *data)
{
	phandle *ph = data;
	return to_of_device(dev)->node->linux_phandle == *ph;
}

struct of_device *of_find_device_by_phandle(phandle ph)
{
	struct device *dev;

	dev = bus_find_device(&of_platform_bus_type,
			      NULL, &ph, of_dev_phandle_match);
	if (dev)
		return to_of_device(dev);
	return NULL;
}
EXPORT_SYMBOL(of_find_device_by_phandle);


#ifdef CONFIG_PPC_OF_PLATFORM_PCI

/* The probing of PCI controllers from of_platform is currently
 * 64 bits only, mostly due to gratuitous differences between
 * the 32 and 64 bits PCI code on PowerPC and the 32 bits one
 * lacking some bits needed here.
 */

static int __devinit of_pci_phb_probe(struct of_device *dev,
				      const struct of_device_id *match)
{
	struct pci_controller *phb;

	/* Check if we can do that ... */
	if (ppc_md.pci_setup_phb == NULL)
		return -ENODEV;

	printk(KERN_INFO "Setting up PCI bus %s\n", dev->node->full_name);

	/* Alloc and setup PHB data structure */
	phb = pcibios_alloc_controller(dev->node);
	if (!phb)
		return -ENODEV;

	/* Setup parent in sysfs */
	phb->parent = &dev->dev;

	/* Setup the PHB using arch provided callback */
	if (ppc_md.pci_setup_phb(phb)) {
		pcibios_free_controller(phb);
		return -ENODEV;
	}

	/* Process "ranges" property */
	pci_process_bridge_OF_ranges(phb, dev->node, 0);

	/* Init pci_dn data structures */
	pci_devs_phb_init_dynamic(phb);

	/* Register devices with EEH */
#ifdef CONFIG_EEH
	if (dev->node->child)
		eeh_add_device_tree_early(dev->node);
#endif /* CONFIG_EEH */

	/* Scan the bus */
	scan_phb(phb);

	/* Claim resources. This might need some rework as well depending
	 * wether we are doing probe-only or not, like assigning unassigned
	 * resources etc...
	 */
	pcibios_claim_one_bus(phb->bus);

	/* Finish EEH setup */
#ifdef CONFIG_EEH
	eeh_add_device_tree_late(phb->bus);
#endif

	/* Add probed PCI devices to the device model */
	pci_bus_add_devices(phb->bus);

	return 0;
}

static struct of_device_id of_pci_phb_ids[] = {
	{ .type = "pci", },
	{ .type = "pcix", },
	{ .type = "pcie", },
	{ .type = "pciex", },
	{ .type = "ht", },
	{}
};

static struct of_platform_driver of_pci_phb_driver = {
       .name = "of-pci",
       .match_table = of_pci_phb_ids,
       .probe = of_pci_phb_probe,
};

static __init int of_pci_phb_init(void)
{
	return of_register_platform_driver(&of_pci_phb_driver);
}

device_initcall(of_pci_phb_init);

#endif /* CONFIG_PPC_OF_PLATFORM_PCI */
Commit	Line	Data
7eebde70 BH	1	/*
	2	* Copyright (C) 2006 Benjamin Herrenschmidt, IBM Corp.
	3	* <benh@kernel.crashing.org>
4c9d2800	4	* and Arnd Bergmann, IBM Corp.
7eebde70 BH	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License
	8	* as published by the Free Software Foundation; either version
	9	* 2 of the License, or (at your option) any later version.
	10	*
	11	*/
	12
	13	#undef DEBUG
	14
	15	#include <linux/string.h>
	16	#include <linux/kernel.h>
	17	#include <linux/init.h>
	18	#include <linux/module.h>
	19	#include <linux/mod_devicetable.h>
	20	#include <linux/slab.h>
4c9d2800	21	#include <linux/pci.h>
7eebde70 BH	22
	23	#include <asm/errno.h>
	24	#include <asm/dcr.h>
	25	#include <asm/of_device.h>
	26	#include <asm/of_platform.h>
12d04eef	27	#include <asm/topology.h>
4c9d2800 BH	28	#include <asm/pci-bridge.h>
4c9d2800 BH	29	#include <asm/ppc-pci.h>
9309180f BH	30	#include <asm/atomic.h>
9309180f BH	31
7eebde70 BH	32	/*
	33	* The list of OF IDs below is used for matching bus types in the
	34	* system whose devices are to be exposed as of_platform_devices.
	35	*
	36	* This is the default list valid for most platforms. This file provides
	37	* functions who can take an explicit list if necessary though
	38	*
	39	* The search is always performed recursively looking for children of
	40	* the provided device_node and recursively if such a children matches
	41	* a bus type in the list
	42	*/
	43
	44	static struct of_device_id of_default_bus_ids[] = {
	45	{ .type = "soc", },
	46	{ .compatible = "soc", },
	47	{ .type = "spider", },
	48	{ .type = "axon", },
	49	{ .type = "plb5", },
	50	{ .type = "plb4", },
	51	{ .type = "opb", },
4bc19626	52	{ .type = "ebc", },
7eebde70 BH	53	{},
	54	};
	55
9309180f BH	56	static atomic_t bus_no_reg_magic;
9309180f BH	57
7eebde70	58	struct bus_type of_platform_bus_type = {
1f9209cf	59	.uevent = of_device_uevent,
7eebde70 BH	60	};
	61	EXPORT_SYMBOL(of_platform_bus_type);
	62
	63	static int __init of_bus_driver_init(void)
	64	{
3f23de10	65	return of_bus_type_init(&of_platform_bus_type, "of_platform");
7eebde70 BH	66	}
	67
	68	postcore_initcall(of_bus_driver_init);
	69
	70	int of_register_platform_driver(struct of_platform_driver *drv)
	71	{
	72	/* initialize common driver fields */
	73	drv->driver.name = drv->name;
	74	drv->driver.bus = &of_platform_bus_type;
	75
	76	/* register with core */
	77	return driver_register(&drv->driver);
	78	}
	79	EXPORT_SYMBOL(of_register_platform_driver);
	80
	81	void of_unregister_platform_driver(struct of_platform_driver *drv)
	82	{
	83	driver_unregister(&drv->driver);
	84	}
	85	EXPORT_SYMBOL(of_unregister_platform_driver);
	86
	87	static void of_platform_make_bus_id(struct of_device *dev)
	88	{
	89	struct device_node *node = dev->node;
	90	char *name = dev->dev.bus_id;
	91	const u32 *reg;
	92	u64 addr;
30d36843	93	int magic;
7eebde70 BH	94
	95	/*
	96	* If it's a DCR based device, use 'd' for native DCRs
	97	* and 'D' for MMIO DCRs.
	98	*/
	99	#ifdef CONFIG_PPC_DCR
e2eb6392	100	reg = of_get_property(node, "dcr-reg", NULL);
7eebde70 BH	101	if (reg) {
	102	#ifdef CONFIG_PPC_DCR_NATIVE
	103	snprintf(name, BUS_ID_SIZE, "d%x.%s",
	104	*reg, node->name);
	105	#else /* CONFIG_PPC_DCR_NATIVE */
	106	addr = of_translate_dcr_address(node, *reg, NULL);
	107	if (addr != OF_BAD_ADDR) {
	108	snprintf(name, BUS_ID_SIZE,
	109	"D%llx.%s", (unsigned long long)addr,
	110	node->name);
	111	return;
	112	}
	113	#endif /* !CONFIG_PPC_DCR_NATIVE */
	114	}
	115	#endif /* CONFIG_PPC_DCR */
	116
	117	/*
	118	* For MMIO, get the physical address
	119	*/
e2eb6392	120	reg = of_get_property(node, "reg", NULL);
7eebde70 BH	121	if (reg) {
	122	addr = of_translate_address(node, reg);
	123	if (addr != OF_BAD_ADDR) {
	124	snprintf(name, BUS_ID_SIZE,
	125	"%llx.%s", (unsigned long long)addr,
	126	node->name);
	127	return;
	128	}
	129	}
	130
	131	/*
9309180f BH	132	* No BusID, use the node name and add a globally incremented
9309180f BH	133	* counter (and pray...)
7eebde70	134	*/
9309180f BH	135	magic = atomic_add_return(1, &bus_no_reg_magic);
9309180f BH	136	snprintf(name, BUS_ID_SIZE, "%s.%d", node->name, magic - 1);
7eebde70 BH	137	}
	138
	139	struct of_device* of_platform_device_create(struct device_node *np,
	140	const char *bus_id,
	141	struct device *parent)
	142	{
	143	struct of_device *dev;
	144
dd00cc48	145	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
7eebde70 BH	146	if (!dev)
7eebde70 BH	147	return NULL;
7eebde70 BH	148
	149	dev->node = of_node_get(np);
	150	dev->dma_mask = 0xffffffffUL;
	151	dev->dev.dma_mask = &dev->dma_mask;
	152	dev->dev.parent = parent;
	153	dev->dev.bus = &of_platform_bus_type;
	154	dev->dev.release = of_release_dev;
12d04eef BH	155	dev->dev.archdata.of_node = np;
	156	dev->dev.archdata.numa_node = of_node_to_nid(np);
	157
	158	/* We do not fill the DMA ops for platform devices by default.
	159	* This is currently the responsibility of the platform code
	160	* to do such, possibly using a device notifier
	161	*/
7eebde70 BH	162
	163	if (bus_id)
	164	strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE);
	165	else
	166	of_platform_make_bus_id(dev);
	167
	168	if (of_device_register(dev) != 0) {
	169	kfree(dev);
	170	return NULL;
	171	}
	172
	173	return dev;
	174	}
	175	EXPORT_SYMBOL(of_platform_device_create);
	176
	177
	178
	179	/**
	180	* of_platform_bus_create - Create an OF device for a bus node and all its
	181	* children. Optionally recursively instanciate matching busses.
	182	* @bus: device node of the bus to instanciate
	183	* @matches: match table, NULL to use the default, OF_NO_DEEP_PROBE to
	184	* disallow recursive creation of child busses
	185	*/
	186	static int of_platform_bus_create(struct device_node *bus,
	187	struct of_device_id *matches,
	188	struct device *parent)
	189	{
	190	struct device_node *child;
	191	struct of_device *dev;
	192	int rc = 0;
	193
	194	for (child = NULL; (child = of_get_next_child(bus, child)); ) {
	195	pr_debug(" create child: %s\n", child->full_name);
	196	dev = of_platform_device_create(child, NULL, parent);
	197	if (dev == NULL)
	198	rc = -ENOMEM;
	199	else if (!of_match_node(matches, child))
	200	continue;
	201	if (rc == 0) {
	202	pr_debug(" and sub busses\n");
	203	rc = of_platform_bus_create(child, matches, &dev->dev);
	204	} if (rc) {
	205	of_node_put(child);
	206	break;
	207	}
	208	}
	209	return rc;
	210	}
	211
	212	/**
	213	* of_platform_bus_probe - Probe the device-tree for platform busses
	214	* @root: parent of the first level to probe or NULL for the root of the tree
	215	* @matches: match table, NULL to use the default
	216	* @parent: parent to hook devices from, NULL for toplevel
	217	*
	218	* Note that children of the provided root are not instanciated as devices
	219	* unless the specified root itself matches the bus list and is not NULL.
	220	*/
	221
	222	int of_platform_bus_probe(struct device_node *root,
	223	struct of_device_id *matches,
	224	struct device *parent)
	225	{
226	struct device_node *child;
227	struct of_device *dev;
228	int rc = 0;
229
230	if (matches == NULL)
231	matches = of_default_bus_ids;
232	if (matches == OF_NO_DEEP_PROBE)
233	return -EINVAL;
234	if (root == NULL)
235	root = of_find_node_by_path("/");
236	else
237	of_node_get(root);
238
239	pr_debug("of_platform_bus_probe()\n");
240	pr_debug(" starting at: %s\n", root->full_name);
241
242	/* Do a self check of bus type, if there's a match, create
243	* children
244	*/
245	if (of_match_node(matches, root)) {
246	pr_debug(" root match, create all sub devices\n");
247	dev = of_platform_device_create(root, NULL, parent);
248	if (dev == NULL) {
249	rc = -ENOMEM;
250	goto bail;
251	}
252	pr_debug(" create all sub busses\n");
253	rc = of_platform_bus_create(root, matches, &dev->dev);
254	goto bail;
255	}
256	for (child = NULL; (child = of_get_next_child(root, child)); ) {
257	if (!of_match_node(matches, child))
258	continue;
259
260	pr_debug(" match: %s\n", child->full_name);
261	dev = of_platform_device_create(child, NULL, parent);
262	if (dev == NULL)
263	rc = -ENOMEM;
264	else
265	rc = of_platform_bus_create(child, matches, &dev->dev);
266	if (rc) {
267	of_node_put(child);
268	break;
269	}
270	}
271	bail:
272	of_node_put(root);
273	return rc;
274	}
275	EXPORT_SYMBOL(of_platform_bus_probe);
276
277	static int of_dev_node_match(struct device dev, void data)
278	{
279	return to_of_device(dev)->node == data;
280	}
281
282	struct of_device of_find_device_by_node(struct device_node np)
283	{
284	struct device *dev;
285
286	dev = bus_find_device(&of_platform_bus_type,
287	NULL, np, of_dev_node_match);
288	if (dev)
289	return to_of_device(dev);
290	return NULL;
291	}
292	EXPORT_SYMBOL(of_find_device_by_node);
293
294	static int of_dev_phandle_match(struct device dev, void data)
295	{
296	phandle *ph = data;
297	return to_of_device(dev)->node->linux_phandle == *ph;
298	}
299
300	struct of_device *of_find_device_by_phandle(phandle ph)
301	{
302	struct device *dev;
303
304	dev = bus_find_device(&of_platform_bus_type,
305	NULL, &ph, of_dev_phandle_match);
306	if (dev)
307	return to_of_device(dev);
308	return NULL;
309	}
310	EXPORT_SYMBOL(of_find_device_by_phandle);
4c9d2800 BH	311
	312
	313	#ifdef CONFIG_PPC_OF_PLATFORM_PCI
	314
	315	/* The probing of PCI controllers from of_platform is currently
	316	* 64 bits only, mostly due to gratuitous differences between
	317	* the 32 and 64 bits PCI code on PowerPC and the 32 bits one
	318	* lacking some bits needed here.
	319	*/
	320
	321	static int __devinit of_pci_phb_probe(struct of_device *dev,
	322	const struct of_device_id *match)
	323	{
	324	struct pci_controller *phb;
	325
	326	/* Check if we can do that ... */
	327	if (ppc_md.pci_setup_phb == NULL)
	328	return -ENODEV;
	329
	330	printk(KERN_INFO "Setting up PCI bus %s\n", dev->node->full_name);
	331
	332	/* Alloc and setup PHB data structure */
	333	phb = pcibios_alloc_controller(dev->node);
	334	if (!phb)
	335	return -ENODEV;
	336
	337	/* Setup parent in sysfs */
	338	phb->parent = &dev->dev;
	339
	340	/* Setup the PHB using arch provided callback */
	341	if (ppc_md.pci_setup_phb(phb)) {
	342	pcibios_free_controller(phb);
	343	return -ENODEV;
	344	}
	345
	346	/* Process "ranges" property */
	347	pci_process_bridge_OF_ranges(phb, dev->node, 0);
	348
4c9d2800 BH	349	/* Init pci_dn data structures */
	350	pci_devs_phb_init_dynamic(phb);
	351
	352	/* Register devices with EEH */
	353	#ifdef CONFIG_EEH
	354	if (dev->node->child)
	355	eeh_add_device_tree_early(dev->node);
	356	#endif /* CONFIG_EEH */
	357
	358	/* Scan the bus */
	359	scan_phb(phb);
	360
	361	/* Claim resources. This might need some rework as well depending
	362	* wether we are doing probe-only or not, like assigning unassigned
	363	* resources etc...
	364	*/
	365	pcibios_claim_one_bus(phb->bus);
	366
	367	/* Finish EEH setup */
	368	#ifdef CONFIG_EEH
	369	eeh_add_device_tree_late(phb->bus);
	370	#endif
	371
	372	/* Add probed PCI devices to the device model */
	373	pci_bus_add_devices(phb->bus);
	374
	375	return 0;
	376	}
	377
	378	static struct of_device_id of_pci_phb_ids[] = {
	379	{ .type = "pci", },
	380	{ .type = "pcix", },
	381	{ .type = "pcie", },
	382	{ .type = "pciex", },
	383	{ .type = "ht", },
	384	{}
	385	};
	386
	387	static struct of_platform_driver of_pci_phb_driver = {
	388	.name = "of-pci",
	389	.match_table = of_pci_phb_ids,
	390	.probe = of_pci_phb_probe,
4c9d2800 BH	391	};
	392
	393	static __init int of_pci_phb_init(void)
	394	{
	395	return of_register_platform_driver(&of_pci_phb_driver);
	396	}
	397
	398	device_initcall(of_pci_phb_init);
	399
	400	#endif /* CONFIG_PPC_OF_PLATFORM_PCI */