arch/sparc/kernel/ebus.c - android_kernel_htc_msm8960 - Gitiles

 /* $Id: ebus.c,v 1.20 2002/01/05 01:13:43 davem Exp $
  * ebus.c: PCI to EBus bridge device.
  *
  * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
  *
  * Adopted for sparc by V. Roganov and G. Raiko.
  * Fixes for different platforms by Pete Zaitcev.
  */

 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/string.h>

 #include <asm/system.h>
 #include <asm/page.h>
 #include <asm/pbm.h>
 #include <asm/ebus.h>
 #include <asm/io.h>
 #include <asm/oplib.h>
 #include <asm/prom.h>
 #include <asm/bpp.h>

 struct linux_ebus *ebus_chain = NULL;

 /* We are together with pcic.c under CONFIG_PCI. */
 extern unsigned int pcic_pin_to_irq(unsigned int, const char *name);

 /*
  * IRQ Blacklist
  * Here we list PROMs and systems that are known to supply crap as IRQ numbers.
  */
 struct ebus_device_irq {
 	char *name;
 	unsigned int pin;
 };

 struct ebus_system_entry {
 	char *esname;
 	struct ebus_device_irq *ipt;
 };

 static struct ebus_device_irq je1_1[] = {
 	{ "8042",		 3 },
 	{ "SUNW,CS4231",	 0 },
 	{ "parallel",		 0 },
 	{ "se",			 2 },
 	{ NULL, 0 }
 };

 /*
  * Gleb's JE1 supplied reasonable pin numbers, but mine did not (OBP 2.32).
  * Blacklist the sucker... Note that Gleb's system will work.
  */
 static struct ebus_system_entry ebus_blacklist[] = {
 	{ "SUNW,JavaEngine1", je1_1 },
 	{ NULL, NULL }
 };

 static struct ebus_device_irq *ebus_blackp = NULL;

 /*
  */
 static inline unsigned long ebus_alloc(size_t size)
 {
 	return (unsigned long)kmalloc(size, GFP_ATOMIC);
 }

 /*
  */
 int __init ebus_blacklist_irq(const char *name)
 {
 	struct ebus_device_irq *dp;

 	if ((dp = ebus_blackp) != NULL) {
 		for (; dp->name != NULL; dp++) {
 			if (strcmp(name, dp->name) == 0) {
 				return pcic_pin_to_irq(dp->pin, name);
 			}
 		}
 	}
 	return 0;
 }

 void __init fill_ebus_child(struct device_node *dp,
 			    struct linux_ebus_child *dev)
 {
 	const int *regs;
 	const int *irqs;
 	int i, len;

 	dev->prom_node = dp;
 	regs = of_get_property(dp, "reg", &len);
 	if (!regs)
 		len = 0;
 	dev->num_addrs = len / sizeof(regs[0]);

 	for (i = 0; i < dev->num_addrs; i++) {
 		if (regs[i] >= dev->parent->num_addrs) {
 			prom_printf("UGH: property for %s was %d, need < %d\n",
 				    dev->prom_node->name, len,
 				    dev->parent->num_addrs);
 			panic(__func__);
 		}

 		/* XXX resource */
 		dev->resource[i].start =
 			dev->parent->resource[regs[i]].start;
 	}

 	for (i = 0; i < PROMINTR_MAX; i++)
 		dev->irqs[i] = PCI_IRQ_NONE;

 	if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
 		dev->num_irqs = 1;
 	} else {
 		irqs = of_get_property(dp, "interrupts", &len);
 		if (!irqs) {
 			dev->num_irqs = 0;
 			dev->irqs[0] = 0;
 			if (dev->parent->num_irqs != 0) {
 				dev->num_irqs = 1;
 				dev->irqs[0] = dev->parent->irqs[0];
 			}
 		} else {
 			dev->num_irqs = len / sizeof(irqs[0]);
 			if (irqs[0] == 0 || irqs[0] >= 8) {
 				/*
 				 * XXX Zero is a valid pin number...
 				 * This works as long as Ebus is not wired
 				 * to INTA#.
 				 */
 				printk("EBUS: %s got bad irq %d from PROM\n",
 				       dev->prom_node->name, irqs[0]);
 				dev->num_irqs = 0;
 				dev->irqs[0] = 0;
 			} else {
 				dev->irqs[0] =
 					pcic_pin_to_irq(irqs[0],
 							dev->prom_node->name);
 			}
 		}
 	}
 }

 void __init fill_ebus_device(struct device_node *dp, struct linux_ebus_device *dev)
 {
 	const struct linux_prom_registers *regs;
 	struct linux_ebus_child *child;
 	struct dev_archdata *sd;
 	const int *irqs;
 	int i, n, len;
 	unsigned long baseaddr;

 	dev->prom_node = dp;

 	regs = of_get_property(dp, "reg", &len);
 	if (!regs)
 		len = 0;
 	if (len % sizeof(struct linux_prom_registers)) {
 		prom_printf("UGH: proplen for %s was %d, need multiple of %d\n",
 			    dev->prom_node->name, len,
 			    (int)sizeof(struct linux_prom_registers));
 		panic(__func__);
 	}
 	dev->num_addrs = len / sizeof(struct linux_prom_registers);

 	for (i = 0; i < dev->num_addrs; i++) {
 		/*
 		 * XXX Collect JE-1 PROM
 		 *
 		 * Example - JS-E with 3.11:
 		 *  /ebus
 		 *      regs
 		 *        0x00000000, 0x0, 0x00000000, 0x0, 0x00000000,
 		 *        0x82000010, 0x0, 0xf0000000, 0x0, 0x01000000,
 		 *        0x82000014, 0x0, 0x38800000, 0x0, 0x00800000,
 		 *      ranges
 		 *        0x00, 0x00000000, 0x02000010, 0x0, 0x0, 0x01000000,
 		 *        0x01, 0x01000000, 0x02000014, 0x0, 0x0, 0x00800000,
 		 *  /ebus/8042
 		 *      regs
 		 *        0x00000001, 0x00300060, 0x00000008,
 		 *        0x00000001, 0x00300060, 0x00000008,
 		 */
 		n = regs[i].which_io;
 		if (n >= 4) {
 			/* XXX This is copied from old JE-1 by Gleb. */
 			n = (regs[i].which_io - 0x10) >> 2;
 		} else {
 			;
 		}

 /*
  * XXX Now as we have regions, why don't we make an on-demand allocation...
  */
 		dev->resource[i].start = 0;
 		if ((baseaddr = dev->bus->self->resource[n].start +
 		    regs[i].phys_addr) != 0) {
 			/* dev->resource[i].name = dev->prom_name; */
 			if ((baseaddr = (unsigned long) ioremap(baseaddr,
 			    regs[i].reg_size)) == 0) {
 				panic("ebus: unable to remap dev %s",
 				      dev->prom_node->name);
 			}
 		}
 		dev->resource[i].start = baseaddr;	/* XXX Unaligned */
 	}

 	for (i = 0; i < PROMINTR_MAX; i++)
 		dev->irqs[i] = PCI_IRQ_NONE;

 	if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
 		dev->num_irqs = 1;
 	} else {
 		irqs = of_get_property(dp, "interrupts", &len);
 		if (!irqs) {
 			dev->num_irqs = 0;
 			if ((dev->irqs[0] = dev->bus->self->irq) != 0) {
 				dev->num_irqs = 1;
 /* P3 */ /* printk("EBUS: child %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */
 			}
 		} else {
 			dev->num_irqs = 1;  /* dev->num_irqs = len / sizeof(irqs[0]); */
 			if (irqs[0] == 0 || irqs[0] >= 8) {
 				/* See above for the parent. XXX */
 				printk("EBUS: %s got bad irq %d from PROM\n",
 				       dev->prom_node->name, irqs[0]);
 				dev->num_irqs = 0;
 				dev->irqs[0] = 0;
 			} else {
 				dev->irqs[0] =
 					pcic_pin_to_irq(irqs[0],
 							dev->prom_node->name);
 			}
 		}
 	}

 	sd = &dev->ofdev.dev.archdata;
 	sd->prom_node = dp;
 	sd->op = &dev->ofdev;
 	sd->iommu = dev->bus->ofdev.dev.parent->archdata.iommu;

 	dev->ofdev.node = dp;
 	dev->ofdev.dev.parent = &dev->bus->ofdev.dev;
 	dev->ofdev.dev.bus = &ebus_bus_type;
 	sprintf(dev->ofdev.dev.bus_id, "ebus[%08x]", dp->node);

 	/* Register with core */
 	if (of_device_register(&dev->ofdev) != 0)
 		printk(KERN_DEBUG "ebus: device registration error for %s!\n",
 		       dp->path_component_name);

 	if ((dp = dp->child) != NULL) {
 		dev->children = (struct linux_ebus_child *)
 			ebus_alloc(sizeof(struct linux_ebus_child));

 		child = dev->children;
 		child->next = NULL;
 		child->parent = dev;
 		child->bus = dev->bus;
 		fill_ebus_child(dp, child);

 		while ((dp = dp->sibling) != NULL) {
 			child->next = (struct linux_ebus_child *)
 				ebus_alloc(sizeof(struct linux_ebus_child));

 			child = child->next;
 			child->next = NULL;
 			child->parent = dev;
 			child->bus = dev->bus;
 			fill_ebus_child(dp, child);
 		}
 	}
 }

 void __init ebus_init(void)
 {
 	const struct linux_prom_pci_registers *regs;
 	struct linux_pbm_info *pbm;
 	struct linux_ebus_device *dev;
 	struct linux_ebus *ebus;
 	struct ebus_system_entry *sp;
 	struct pci_dev *pdev;
 	struct pcidev_cookie *cookie;
 	struct device_node *dp;
 	struct resource *p;
 	unsigned short pci_command;
 	int len, reg, nreg;
 	int num_ebus = 0;

 	dp = of_find_node_by_path("/");
 	for (sp = ebus_blacklist; sp->esname != NULL; sp++) {
 		if (strcmp(dp->name, sp->esname) == 0) {
 			ebus_blackp = sp->ipt;
 			break;
 		}
 	}

 	pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, NULL);
 	if (!pdev)
 		return;

 	cookie = pdev->sysdata;
 	dp = cookie->prom_node;

 	ebus_chain = ebus = (struct linux_ebus *)
 			ebus_alloc(sizeof(struct linux_ebus));
 	ebus->next = NULL;

 	while (dp) {
 		struct device_node *nd;

 		ebus->prom_node = dp;
 		ebus->self = pdev;
 		ebus->parent = pbm = cookie->pbm;

 		/* Enable BUS Master. */
 		pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
 		pci_command |= PCI_COMMAND_MASTER;
 		pci_write_config_word(pdev, PCI_COMMAND, pci_command);

 		regs = of_get_property(dp, "reg", &len);
 		if (!regs) {
 			prom_printf("%s: can't find reg property\n",
 				    __func__);
 			prom_halt();
 		}
 		nreg = len / sizeof(struct linux_prom_pci_registers);

 		p = &ebus->self->resource[0];
 		for (reg = 0; reg < nreg; reg++) {
 			if (!(regs[reg].which_io & 0x03000000))
 				continue;

 			(p++)->start = regs[reg].phys_lo;
 		}

 		ebus->ofdev.node = dp;
 		ebus->ofdev.dev.parent = &pdev->dev;
 		ebus->ofdev.dev.bus = &ebus_bus_type;
 		sprintf(ebus->ofdev.dev.bus_id, "ebus%d", num_ebus);

 		/* Register with core */
 		if (of_device_register(&ebus->ofdev) != 0)
 			printk(KERN_DEBUG "ebus: device registration error for %s!\n",
 			       dp->path_component_name);


 		nd = dp->child;
 		if (!nd)
 			goto next_ebus;

 		ebus->devices = (struct linux_ebus_device *)
 				ebus_alloc(sizeof(struct linux_ebus_device));

 		dev = ebus->devices;
 		dev->next = NULL;
 		dev->children = NULL;
 		dev->bus = ebus;
 		fill_ebus_device(nd, dev);

 		while ((nd = nd->sibling) != NULL) {
 			dev->next = (struct linux_ebus_device *)
 				ebus_alloc(sizeof(struct linux_ebus_device));

 			dev = dev->next;
 			dev->next = NULL;
 			dev->children = NULL;
 			dev->bus = ebus;
 			fill_ebus_device(nd, dev);
 		}

 	next_ebus:
 		pdev = pci_get_device(PCI_VENDOR_ID_SUN,
 				       PCI_DEVICE_ID_SUN_EBUS, pdev);
 		if (!pdev)
 			break;

 		cookie = pdev->sysdata;
 		dp = cookie->prom_node;

 		ebus->next = (struct linux_ebus *)
 			ebus_alloc(sizeof(struct linux_ebus));
 		ebus = ebus->next;
 		ebus->next = NULL;
 		++num_ebus;
 	}
 	if (pdev)
 		pci_dev_put(pdev);
 }
	/* $Id: ebus.c,v 1.20 2002/01/05 01:13:43 davem Exp $
	* ebus.c: PCI to EBus bridge device.
	*
	* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
	*
	* Adopted for sparc by V. Roganov and G. Raiko.
	* Fixes for different platforms by Pete Zaitcev.
	*/

	#include <linux/kernel.h>
	#include <linux/types.h>
	#include <linux/init.h>
	#include <linux/slab.h>
	#include <linux/string.h>

	#include <asm/system.h>
	#include <asm/page.h>
	#include <asm/pbm.h>
	#include <asm/ebus.h>
	#include <asm/io.h>
	#include <asm/oplib.h>
	#include <asm/prom.h>
	#include <asm/bpp.h>

	struct linux_ebus *ebus_chain = NULL;

	/* We are together with pcic.c under CONFIG_PCI. */
	extern unsigned int pcic_pin_to_irq(unsigned int, const char *name);

	/*
	* IRQ Blacklist
	* Here we list PROMs and systems that are known to supply crap as IRQ numbers.
	*/
	struct ebus_device_irq {
	char *name;
	unsigned int pin;
	};

	struct ebus_system_entry {
	char *esname;
	struct ebus_device_irq *ipt;
	};

	static struct ebus_device_irq je1_1[] = {
	{ "8042", 3 },
	{ "SUNW,CS4231", 0 },
	{ "parallel", 0 },
	{ "se", 2 },
	{ NULL, 0 }
	};

	/*
	* Gleb's JE1 supplied reasonable pin numbers, but mine did not (OBP 2.32).
	* Blacklist the sucker... Note that Gleb's system will work.
	*/
	static struct ebus_system_entry ebus_blacklist[] = {
	{ "SUNW,JavaEngine1", je1_1 },
	{ NULL, NULL }
	};

	static struct ebus_device_irq *ebus_blackp = NULL;

	/*
	*/
	static inline unsigned long ebus_alloc(size_t size)
	{
	return (unsigned long)kmalloc(size, GFP_ATOMIC);
	}

	/*
	*/
	int __init ebus_blacklist_irq(const char *name)
	{
	struct ebus_device_irq *dp;

	if ((dp = ebus_blackp) != NULL) {
	for (; dp->name != NULL; dp++) {
	if (strcmp(name, dp->name) == 0) {
	return pcic_pin_to_irq(dp->pin, name);
	}
	}
	}
	return 0;
	}

	void __init fill_ebus_child(struct device_node *dp,
	struct linux_ebus_child *dev)
	{
	const int *regs;
	const int *irqs;
	int i, len;

	dev->prom_node = dp;
	regs = of_get_property(dp, "reg", &len);
	if (!regs)
	len = 0;
	dev->num_addrs = len / sizeof(regs[0]);

	for (i = 0; i < dev->num_addrs; i++) {
	if (regs[i] >= dev->parent->num_addrs) {
	prom_printf("UGH: property for %s was %d, need < %d\n",
	dev->prom_node->name, len,
	dev->parent->num_addrs);
	panic(__func__);
	}

	/* XXX resource */
	dev->resource[i].start =
	dev->parent->resource[regs[i]].start;
	}

	for (i = 0; i < PROMINTR_MAX; i++)
	dev->irqs[i] = PCI_IRQ_NONE;

	if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
	dev->num_irqs = 1;
	} else {
	irqs = of_get_property(dp, "interrupts", &len);
	if (!irqs) {
	dev->num_irqs = 0;
	dev->irqs[0] = 0;
	if (dev->parent->num_irqs != 0) {
	dev->num_irqs = 1;
	dev->irqs[0] = dev->parent->irqs[0];
	}
	} else {
	dev->num_irqs = len / sizeof(irqs[0]);
	if (irqs[0] == 0 \|\| irqs[0] >= 8) {
	/*
	* XXX Zero is a valid pin number...
	* This works as long as Ebus is not wired
	* to INTA#.
	*/
	printk("EBUS: %s got bad irq %d from PROM\n",
	dev->prom_node->name, irqs[0]);
	dev->num_irqs = 0;
	dev->irqs[0] = 0;
	} else {
	dev->irqs[0] =
	pcic_pin_to_irq(irqs[0],
	dev->prom_node->name);
	}
	}
	}
	}

	void __init fill_ebus_device(struct device_node dp, struct linux_ebus_device dev)
	{
	const struct linux_prom_registers *regs;
	struct linux_ebus_child *child;
	struct dev_archdata *sd;
	const int *irqs;
	int i, n, len;
	unsigned long baseaddr;

	dev->prom_node = dp;

	regs = of_get_property(dp, "reg", &len);
	if (!regs)
	len = 0;
	if (len % sizeof(struct linux_prom_registers)) {
	prom_printf("UGH: proplen for %s was %d, need multiple of %d\n",
	dev->prom_node->name, len,
	(int)sizeof(struct linux_prom_registers));
	panic(__func__);
	}
	dev->num_addrs = len / sizeof(struct linux_prom_registers);

	for (i = 0; i < dev->num_addrs; i++) {
	/*
	* XXX Collect JE-1 PROM
	*
	* Example - JS-E with 3.11:
	* /ebus
	* regs
	* 0x00000000, 0x0, 0x00000000, 0x0, 0x00000000,
	* 0x82000010, 0x0, 0xf0000000, 0x0, 0x01000000,
	* 0x82000014, 0x0, 0x38800000, 0x0, 0x00800000,
	* ranges
	* 0x00, 0x00000000, 0x02000010, 0x0, 0x0, 0x01000000,
	* 0x01, 0x01000000, 0x02000014, 0x0, 0x0, 0x00800000,
	* /ebus/8042
	* regs
	* 0x00000001, 0x00300060, 0x00000008,
	* 0x00000001, 0x00300060, 0x00000008,
	*/
	n = regs[i].which_io;
	if (n >= 4) {
	/* XXX This is copied from old JE-1 by Gleb. */
	n = (regs[i].which_io - 0x10) >> 2;
	} else {
	;
	}

	/*
	* XXX Now as we have regions, why don't we make an on-demand allocation...
	*/
	dev->resource[i].start = 0;
	if ((baseaddr = dev->bus->self->resource[n].start +
	regs[i].phys_addr) != 0) {
	/* dev->resource[i].name = dev->prom_name; */
	if ((baseaddr = (unsigned long) ioremap(baseaddr,
	regs[i].reg_size)) == 0) {
	panic("ebus: unable to remap dev %s",
	dev->prom_node->name);
	}
	}
	dev->resource[i].start = baseaddr; /* XXX Unaligned */
	}

	for (i = 0; i < PROMINTR_MAX; i++)
	dev->irqs[i] = PCI_IRQ_NONE;

	if ((dev->irqs[0] = ebus_blacklist_irq(dev->prom_node->name)) != 0) {
	dev->num_irqs = 1;
	} else {
	irqs = of_get_property(dp, "interrupts", &len);
	if (!irqs) {
	dev->num_irqs = 0;
	if ((dev->irqs[0] = dev->bus->self->irq) != 0) {
	dev->num_irqs = 1;
	/* P3 / / printk("EBUS: child %s irq %d from parent\n", dev->prom_name, dev->irqs[0]); */
	}
	} else {
	dev->num_irqs = 1; /* dev->num_irqs = len / sizeof(irqs[0]); */
	if (irqs[0] == 0 \|\| irqs[0] >= 8) {
	/* See above for the parent. XXX */
	printk("EBUS: %s got bad irq %d from PROM\n",
	dev->prom_node->name, irqs[0]);
	dev->num_irqs = 0;
	dev->irqs[0] = 0;
	} else {
	dev->irqs[0] =
	pcic_pin_to_irq(irqs[0],
	dev->prom_node->name);
	}
	}
	}

	sd = &dev->ofdev.dev.archdata;
	sd->prom_node = dp;
	sd->op = &dev->ofdev;
	sd->iommu = dev->bus->ofdev.dev.parent->archdata.iommu;

	dev->ofdev.node = dp;
	dev->ofdev.dev.parent = &dev->bus->ofdev.dev;
	dev->ofdev.dev.bus = &ebus_bus_type;
	sprintf(dev->ofdev.dev.bus_id, "ebus[%08x]", dp->node);

	/* Register with core */
	if (of_device_register(&dev->ofdev) != 0)
	printk(KERN_DEBUG "ebus: device registration error for %s!\n",
	dp->path_component_name);

	if ((dp = dp->child) != NULL) {
	dev->children = (struct linux_ebus_child *)
	ebus_alloc(sizeof(struct linux_ebus_child));

	child = dev->children;
	child->next = NULL;
	child->parent = dev;
	child->bus = dev->bus;
	fill_ebus_child(dp, child);

	while ((dp = dp->sibling) != NULL) {
	child->next = (struct linux_ebus_child *)
	ebus_alloc(sizeof(struct linux_ebus_child));

	child = child->next;
	child->next = NULL;
	child->parent = dev;
	child->bus = dev->bus;
	fill_ebus_child(dp, child);
	}
	}
	}

	void __init ebus_init(void)
	{
	const struct linux_prom_pci_registers *regs;
	struct linux_pbm_info *pbm;
	struct linux_ebus_device *dev;
	struct linux_ebus *ebus;
	struct ebus_system_entry *sp;
	struct pci_dev *pdev;
	struct pcidev_cookie *cookie;
	struct device_node *dp;
	struct resource *p;
	unsigned short pci_command;
	int len, reg, nreg;
	int num_ebus = 0;

	dp = of_find_node_by_path("/");
	for (sp = ebus_blacklist; sp->esname != NULL; sp++) {
	if (strcmp(dp->name, sp->esname) == 0) {
	ebus_blackp = sp->ipt;
	break;
	}
	}

	pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_DEVICE_ID_SUN_EBUS, NULL);
	if (!pdev)
	return;

	cookie = pdev->sysdata;
	dp = cookie->prom_node;

	ebus_chain = ebus = (struct linux_ebus *)
	ebus_alloc(sizeof(struct linux_ebus));
	ebus->next = NULL;

	while (dp) {
	struct device_node *nd;

	ebus->prom_node = dp;
	ebus->self = pdev;
	ebus->parent = pbm = cookie->pbm;

	/* Enable BUS Master. */
	pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
	pci_command \|= PCI_COMMAND_MASTER;
	pci_write_config_word(pdev, PCI_COMMAND, pci_command);

	regs = of_get_property(dp, "reg", &len);
	if (!regs) {
	prom_printf("%s: can't find reg property\n",
	__func__);
	prom_halt();
	}
	nreg = len / sizeof(struct linux_prom_pci_registers);

	p = &ebus->self->resource[0];
	for (reg = 0; reg < nreg; reg++) {
	if (!(regs[reg].which_io & 0x03000000))
	continue;

	(p++)->start = regs[reg].phys_lo;
	}

	ebus->ofdev.node = dp;
	ebus->ofdev.dev.parent = &pdev->dev;
	ebus->ofdev.dev.bus = &ebus_bus_type;
	sprintf(ebus->ofdev.dev.bus_id, "ebus%d", num_ebus);

	/* Register with core */
	if (of_device_register(&ebus->ofdev) != 0)
	printk(KERN_DEBUG "ebus: device registration error for %s!\n",
	dp->path_component_name);


	nd = dp->child;
	if (!nd)
	goto next_ebus;

	ebus->devices = (struct linux_ebus_device *)
	ebus_alloc(sizeof(struct linux_ebus_device));

	dev = ebus->devices;
	dev->next = NULL;
	dev->children = NULL;
	dev->bus = ebus;
	fill_ebus_device(nd, dev);

	while ((nd = nd->sibling) != NULL) {
	dev->next = (struct linux_ebus_device *)
	ebus_alloc(sizeof(struct linux_ebus_device));

	dev = dev->next;
	dev->next = NULL;
	dev->children = NULL;
	dev->bus = ebus;
	fill_ebus_device(nd, dev);
	}

	next_ebus:
	pdev = pci_get_device(PCI_VENDOR_ID_SUN,
	PCI_DEVICE_ID_SUN_EBUS, pdev);
	if (!pdev)
	break;

	cookie = pdev->sysdata;
	dp = cookie->prom_node;

	ebus->next = (struct linux_ebus *)
	ebus_alloc(sizeof(struct linux_ebus));
	ebus = ebus->next;
	ebus->next = NULL;
	++num_ebus;
	}
	if (pdev)
	pci_dev_put(pdev);
	}