Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1560 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/cpqphp_pci.c b/drivers/pci/hotplug/cpqphp_pci.c
new file mode 100644
index 000000000..1b2b3f3b6
--- /dev/null
+++ b/drivers/pci/hotplug/cpqphp_pci.c
@@ -0,0 +1,1560 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Compaq Hot Plug Controller Driver
+ *
+ * Copyright (C) 1995,2001 Compaq Computer Corporation
+ * Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 2001 IBM Corp.
+ *
+ * All rights reserved.
+ *
+ * Send feedback to <greg@kroah.com>
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/proc_fs.h>
+#include <linux/pci.h>
+#include <linux/pci_hotplug.h>
+#include "../pci.h"
+#include "cpqphp.h"
+#include "cpqphp_nvram.h"
+
+
+u8 cpqhp_nic_irq;
+u8 cpqhp_disk_irq;
+
+static u16 unused_IRQ;
+
+/*
+ * detect_HRT_floating_pointer
+ *
+ * find the Hot Plug Resource Table in the specified region of memory.
+ *
+ */
+static void __iomem *detect_HRT_floating_pointer(void __iomem *begin, void __iomem *end)
+{
+	void __iomem *fp;
+	void __iomem *endp;
+	u8 temp1, temp2, temp3, temp4;
+	int status = 0;
+
+	endp = (end - sizeof(struct hrt) + 1);
+
+	for (fp = begin; fp <= endp; fp += 16) {
+		temp1 = readb(fp + SIG0);
+		temp2 = readb(fp + SIG1);
+		temp3 = readb(fp + SIG2);
+		temp4 = readb(fp + SIG3);
+		if (temp1 == '$' &&
+		    temp2 == 'H' &&
+		    temp3 == 'R' &&
+		    temp4 == 'T') {
+			status = 1;
+			break;
+		}
+	}
+
+	if (!status)
+		fp = NULL;
+
+	dbg("Discovered Hotplug Resource Table at %p\n", fp);
+	return fp;
+}
+
+
+int cpqhp_configure_device(struct controller *ctrl, struct pci_func *func)
+{
+	struct pci_bus *child;
+	int num;
+
+	pci_lock_rescan_remove();
+
+	if (func->pci_dev == NULL)
+		func->pci_dev = pci_get_domain_bus_and_slot(0, func->bus,
+							PCI_DEVFN(func->device,
+							func->function));
+
+	/* No pci device, we need to create it then */
+	if (func->pci_dev == NULL) {
+		dbg("INFO: pci_dev still null\n");
+
+		num = pci_scan_slot(ctrl->pci_dev->bus, PCI_DEVFN(func->device, func->function));
+		if (num)
+			pci_bus_add_devices(ctrl->pci_dev->bus);
+
+		func->pci_dev = pci_get_domain_bus_and_slot(0, func->bus,
+							PCI_DEVFN(func->device,
+							func->function));
+		if (func->pci_dev == NULL) {
+			dbg("ERROR: pci_dev still null\n");
+			goto out;
+		}
+	}
+
+	if (func->pci_dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
+		pci_hp_add_bridge(func->pci_dev);
+		child = func->pci_dev->subordinate;
+		if (child)
+			pci_bus_add_devices(child);
+	}
+
+	pci_dev_put(func->pci_dev);
+
+ out:
+	pci_unlock_rescan_remove();
+	return 0;
+}
+
+
+int cpqhp_unconfigure_device(struct pci_func *func)
+{
+	int j;
+
+	dbg("%s: bus/dev/func = %x/%x/%x\n", __func__, func->bus, func->device, func->function);
+
+	pci_lock_rescan_remove();
+	for (j = 0; j < 8 ; j++) {
+		struct pci_dev *temp = pci_get_domain_bus_and_slot(0,
+							func->bus,
+							PCI_DEVFN(func->device,
+							j));
+		if (temp) {
+			pci_dev_put(temp);
+			pci_stop_and_remove_bus_device(temp);
+		}
+	}
+	pci_unlock_rescan_remove();
+	return 0;
+}
+
+static int PCI_RefinedAccessConfig(struct pci_bus *bus, unsigned int devfn, u8 offset, u32 *value)
+{
+	u32 vendID = 0;
+
+	if (pci_bus_read_config_dword(bus, devfn, PCI_VENDOR_ID, &vendID) == -1)
+		return -1;
+	if (vendID == 0xffffffff)
+		return -1;
+	return pci_bus_read_config_dword(bus, devfn, offset, value);
+}
+
+
+/*
+ * cpqhp_set_irq
+ *
+ * @bus_num: bus number of PCI device
+ * @dev_num: device number of PCI device
+ * @slot: pointer to u8 where slot number will be returned
+ */
+int cpqhp_set_irq(u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num)
+{
+	int rc = 0;
+
+	if (cpqhp_legacy_mode) {
+		struct pci_dev *fakedev;
+		struct pci_bus *fakebus;
+		u16 temp_word;
+
+		fakedev = kmalloc(sizeof(*fakedev), GFP_KERNEL);
+		fakebus = kmalloc(sizeof(*fakebus), GFP_KERNEL);
+		if (!fakedev || !fakebus) {
+			kfree(fakedev);
+			kfree(fakebus);
+			return -ENOMEM;
+		}
+
+		fakedev->devfn = dev_num << 3;
+		fakedev->bus = fakebus;
+		fakebus->number = bus_num;
+		dbg("%s: dev %d, bus %d, pin %d, num %d\n",
+		    __func__, dev_num, bus_num, int_pin, irq_num);
+		rc = pcibios_set_irq_routing(fakedev, int_pin - 1, irq_num);
+		kfree(fakedev);
+		kfree(fakebus);
+		dbg("%s: rc %d\n", __func__, rc);
+		if (!rc)
+			return !rc;
+
+		/* set the Edge Level Control Register (ELCR) */
+		temp_word = inb(0x4d0);
+		temp_word |= inb(0x4d1) << 8;
+
+		temp_word |= 0x01 << irq_num;
+
+		/* This should only be for x86 as it sets the Edge Level
+		 * Control Register
+		 */
+		outb((u8) (temp_word & 0xFF), 0x4d0); outb((u8) ((temp_word &
+		0xFF00) >> 8), 0x4d1); rc = 0; }
+
+	return rc;
+}
+
+
+static int PCI_ScanBusForNonBridge(struct controller *ctrl, u8 bus_num, u8 *dev_num)
+{
+	u16 tdevice;
+	u32 work;
+	u8 tbus;
+
+	ctrl->pci_bus->number = bus_num;
+
+	for (tdevice = 0; tdevice < 0xFF; tdevice++) {
+		/* Scan for access first */
+		if (PCI_RefinedAccessConfig(ctrl->pci_bus, tdevice, 0x08, &work) == -1)
+			continue;
+		dbg("Looking for nonbridge bus_num %d dev_num %d\n", bus_num, tdevice);
+		/* Yep we got one. Not a bridge ? */
+		if ((work >> 8) != PCI_TO_PCI_BRIDGE_CLASS) {
+			*dev_num = tdevice;
+			dbg("found it !\n");
+			return 0;
+		}
+	}
+	for (tdevice = 0; tdevice < 0xFF; tdevice++) {
+		/* Scan for access first */
+		if (PCI_RefinedAccessConfig(ctrl->pci_bus, tdevice, 0x08, &work) == -1)
+			continue;
+		dbg("Looking for bridge bus_num %d dev_num %d\n", bus_num, tdevice);
+		/* Yep we got one. bridge ? */
+		if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) {
+			pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(tdevice, 0), PCI_SECONDARY_BUS, &tbus);
+			/* XXX: no recursion, wtf? */
+			dbg("Recurse on bus_num %d tdevice %d\n", tbus, tdevice);
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+
+static int PCI_GetBusDevHelper(struct controller *ctrl, u8 *bus_num, u8 *dev_num, u8 slot, u8 nobridge)
+{
+	int loop, len;
+	u32 work;
+	u8 tbus, tdevice, tslot;
+
+	len = cpqhp_routing_table_length();
+	for (loop = 0; loop < len; ++loop) {
+		tbus = cpqhp_routing_table->slots[loop].bus;
+		tdevice = cpqhp_routing_table->slots[loop].devfn;
+		tslot = cpqhp_routing_table->slots[loop].slot;
+
+		if (tslot == slot) {
+			*bus_num = tbus;
+			*dev_num = tdevice;
+			ctrl->pci_bus->number = tbus;
+			pci_bus_read_config_dword(ctrl->pci_bus, *dev_num, PCI_VENDOR_ID, &work);
+			if (!nobridge || (work == 0xffffffff))
+				return 0;
+
+			dbg("bus_num %d devfn %d\n", *bus_num, *dev_num);
+			pci_bus_read_config_dword(ctrl->pci_bus, *dev_num, PCI_CLASS_REVISION, &work);
+			dbg("work >> 8 (%x) = BRIDGE (%x)\n", work >> 8, PCI_TO_PCI_BRIDGE_CLASS);
+
+			if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) {
+				pci_bus_read_config_byte(ctrl->pci_bus, *dev_num, PCI_SECONDARY_BUS, &tbus);
+				dbg("Scan bus for Non Bridge: bus %d\n", tbus);
+				if (PCI_ScanBusForNonBridge(ctrl, tbus, dev_num) == 0) {
+					*bus_num = tbus;
+					return 0;
+				}
+			} else
+				return 0;
+		}
+	}
+	return -1;
+}
+
+
+int cpqhp_get_bus_dev(struct controller *ctrl, u8 *bus_num, u8 *dev_num, u8 slot)
+{
+	/* plain (bridges allowed) */
+	return PCI_GetBusDevHelper(ctrl, bus_num, dev_num, slot, 0);
+}
+
+
+/* More PCI configuration routines; this time centered around hotplug
+ * controller
+ */
+
+
+/*
+ * cpqhp_save_config
+ *
+ * Reads configuration for all slots in a PCI bus and saves info.
+ *
+ * Note:  For non-hot plug buses, the slot # saved is the device #
+ *
+ * returns 0 if success
+ */
+int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
+{
+	long rc;
+	u8 class_code;
+	u8 header_type;
+	u32 ID;
+	u8 secondary_bus;
+	struct pci_func *new_slot;
+	int sub_bus;
+	int FirstSupported;
+	int LastSupported;
+	int max_functions;
+	int function;
+	u8 DevError;
+	int device = 0;
+	int cloop = 0;
+	int stop_it;
+	int index;
+	u16 devfn;
+
+	/* Decide which slots are supported */
+
+	if (is_hot_plug) {
+		/*
+		 * is_hot_plug is the slot mask
+		 */
+		FirstSupported = is_hot_plug >> 4;
+		LastSupported = FirstSupported + (is_hot_plug & 0x0F) - 1;
+	} else {
+		FirstSupported = 0;
+		LastSupported = 0x1F;
+	}
+
+	/* Save PCI configuration space for all devices in supported slots */
+	ctrl->pci_bus->number = busnumber;
+	for (device = FirstSupported; device <= LastSupported; device++) {
+		ID = 0xFFFFFFFF;
+		rc = pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(device, 0), PCI_VENDOR_ID, &ID);
+
+		if (ID == 0xFFFFFFFF) {
+			if (is_hot_plug) {
+				/* Setup slot structure with entry for empty
+				 * slot
+				 */
+				new_slot = cpqhp_slot_create(busnumber);
+				if (new_slot == NULL)
+					return 1;
+
+				new_slot->bus = (u8) busnumber;
+				new_slot->device = (u8) device;
+				new_slot->function = 0;
+				new_slot->is_a_board = 0;
+				new_slot->presence_save = 0;
+				new_slot->switch_save = 0;
+			}
+			continue;
+		}
+
+		rc = pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(device, 0), 0x0B, &class_code);
+		if (rc)
+			return rc;
+
+		rc = pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(device, 0), PCI_HEADER_TYPE, &header_type);
+		if (rc)
+			return rc;
+
+		/* If multi-function device, set max_functions to 8 */
+		if (header_type & 0x80)
+			max_functions = 8;
+		else
+			max_functions = 1;
+
+		function = 0;
+
+		do {
+			DevError = 0;
+			if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+				/* Recurse the subordinate bus
+				 * get the subordinate bus number
+				 */
+				rc = pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(device, function), PCI_SECONDARY_BUS, &secondary_bus);
+				if (rc) {
+					return rc;
+				} else {
+					sub_bus = (int) secondary_bus;
+
+					/* Save secondary bus cfg spc
+					 * with this recursive call.
+					 */
+					rc = cpqhp_save_config(ctrl, sub_bus, 0);
+					if (rc)
+						return rc;
+					ctrl->pci_bus->number = busnumber;
+				}
+			}
+
+			index = 0;
+			new_slot = cpqhp_slot_find(busnumber, device, index++);
+			while (new_slot &&
+			       (new_slot->function != (u8) function))
+				new_slot = cpqhp_slot_find(busnumber, device, index++);
+
+			if (!new_slot) {
+				/* Setup slot structure. */
+				new_slot = cpqhp_slot_create(busnumber);
+				if (new_slot == NULL)
+					return 1;
+			}
+
+			new_slot->bus = (u8) busnumber;
+			new_slot->device = (u8) device;
+			new_slot->function = (u8) function;
+			new_slot->is_a_board = 1;
+			new_slot->switch_save = 0x10;
+			/* In case of unsupported board */
+			new_slot->status = DevError;
+			devfn = (new_slot->device << 3) | new_slot->function;
+			new_slot->pci_dev = pci_get_domain_bus_and_slot(0,
+							new_slot->bus, devfn);
+
+			for (cloop = 0; cloop < 0x20; cloop++) {
+				rc = pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(device, function), cloop << 2, (u32 *) &(new_slot->config_space[cloop]));
+				if (rc)
+					return rc;
+			}
+
+			pci_dev_put(new_slot->pci_dev);
+
+			function++;
+
+			stop_it = 0;
+
+			/* this loop skips to the next present function
+			 * reading in Class Code and Header type.
+			 */
+			while ((function < max_functions) && (!stop_it)) {
+				rc = pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(device, function), PCI_VENDOR_ID, &ID);
+				if (ID == 0xFFFFFFFF) {
+					function++;
+					continue;
+				}
+				rc = pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(device, function), 0x0B, &class_code);
+				if (rc)
+					return rc;
+
+				rc = pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(device, function), PCI_HEADER_TYPE, &header_type);
+				if (rc)
+					return rc;
+
+				stop_it++;
+			}
+
+		} while (function < max_functions);
+	}			/* End of FOR loop */
+
+	return 0;
+}
+
+
+/*
+ * cpqhp_save_slot_config
+ *
+ * Saves configuration info for all PCI devices in a given slot
+ * including subordinate buses.
+ *
+ * returns 0 if success
+ */
+int cpqhp_save_slot_config(struct controller *ctrl, struct pci_func *new_slot)
+{
+	long rc;
+	u8 class_code;
+	u8 header_type;
+	u32 ID;
+	u8 secondary_bus;
+	int sub_bus;
+	int max_functions;
+	int function = 0;
+	int cloop = 0;
+	int stop_it;
+
+	ID = 0xFFFFFFFF;
+
+	ctrl->pci_bus->number = new_slot->bus;
+	pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(new_slot->device, 0), PCI_VENDOR_ID, &ID);
+
+	if (ID == 0xFFFFFFFF)
+		return 2;
+
+	pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(new_slot->device, 0), 0x0B, &class_code);
+	pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(new_slot->device, 0), PCI_HEADER_TYPE, &header_type);
+
+	if (header_type & 0x80)	/* Multi-function device */
+		max_functions = 8;
+	else
+		max_functions = 1;
+
+	while (function < max_functions) {
+		if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+			/*  Recurse the subordinate bus */
+			pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), PCI_SECONDARY_BUS, &secondary_bus);
+
+			sub_bus = (int) secondary_bus;
+
+			/* Save the config headers for the secondary
+			 * bus.
+			 */
+			rc = cpqhp_save_config(ctrl, sub_bus, 0);
+			if (rc)
+				return(rc);
+			ctrl->pci_bus->number = new_slot->bus;
+
+		}
+
+		new_slot->status = 0;
+
+		for (cloop = 0; cloop < 0x20; cloop++)
+			pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), cloop << 2, (u32 *) &(new_slot->config_space[cloop]));
+
+		function++;
+
+		stop_it = 0;
+
+		/* this loop skips to the next present function
+		 * reading in the Class Code and the Header type.
+		 */
+		while ((function < max_functions) && (!stop_it)) {
+			pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), PCI_VENDOR_ID, &ID);
+
+			if (ID == 0xFFFFFFFF)
+				function++;
+			else {
+				pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), 0x0B, &class_code);
+				pci_bus_read_config_byte(ctrl->pci_bus, PCI_DEVFN(new_slot->device, function), PCI_HEADER_TYPE, &header_type);
+				stop_it++;
+			}
+		}
+
+	}
+
+	return 0;
+}
+
+
+/*
+ * cpqhp_save_base_addr_length
+ *
+ * Saves the length of all base address registers for the
+ * specified slot.  this is for hot plug REPLACE
+ *
+ * returns 0 if success
+ */
+int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func *func)
+{
+	u8 cloop;
+	u8 header_type;
+	u8 secondary_bus;
+	u8 type;
+	int sub_bus;
+	u32 temp_register;
+	u32 base;
+	u32 rc;
+	struct pci_func *next;
+	int index = 0;
+	struct pci_bus *pci_bus = ctrl->pci_bus;
+	unsigned int devfn;
+
+	func = cpqhp_slot_find(func->bus, func->device, index++);
+
+	while (func != NULL) {
+		pci_bus->number = func->bus;
+		devfn = PCI_DEVFN(func->device, func->function);
+
+		/* Check for Bridge */
+		pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
+
+		if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+			pci_bus_read_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, &secondary_bus);
+
+			sub_bus = (int) secondary_bus;
+
+			next = cpqhp_slot_list[sub_bus];
+
+			while (next != NULL) {
+				rc = cpqhp_save_base_addr_length(ctrl, next);
+				if (rc)
+					return rc;
+
+				next = next->next;
+			}
+			pci_bus->number = func->bus;
+
+			/* FIXME: this loop is duplicated in the non-bridge
+			 * case.  The two could be rolled together Figure out
+			 * IO and memory base lengths
+			 */
+			for (cloop = 0x10; cloop <= 0x14; cloop += 4) {
+				temp_register = 0xFFFFFFFF;
+				pci_bus_write_config_dword(pci_bus, devfn, cloop, temp_register);
+				pci_bus_read_config_dword(pci_bus, devfn, cloop, &base);
+				/* If this register is implemented */
+				if (base) {
+					if (base & 0x01L) {
+						/* IO base
+						 * set base = amount of IO space
+						 * requested
+						 */
+						base = base & 0xFFFFFFFE;
+						base = (~base) + 1;
+
+						type = 1;
+					} else {
+						/* memory base */
+						base = base & 0xFFFFFFF0;
+						base = (~base) + 1;
+
+						type = 0;
+					}
+				} else {
+					base = 0x0L;
+					type = 0;
+				}
+
+				/* Save information in slot structure */
+				func->base_length[(cloop - 0x10) >> 2] =
+				base;
+				func->base_type[(cloop - 0x10) >> 2] = type;
+
+			}	/* End of base register loop */
+
+		} else if ((header_type & 0x7F) == 0x00) {
+			/* Figure out IO and memory base lengths */
+			for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
+				temp_register = 0xFFFFFFFF;
+				pci_bus_write_config_dword(pci_bus, devfn, cloop, temp_register);
+				pci_bus_read_config_dword(pci_bus, devfn, cloop, &base);
+
+				/* If this register is implemented */
+				if (base) {
+					if (base & 0x01L) {
+						/* IO base
+						 * base = amount of IO space
+						 * requested
+						 */
+						base = base & 0xFFFFFFFE;
+						base = (~base) + 1;
+
+						type = 1;
+					} else {
+						/* memory base
+						 * base = amount of memory
+						 * space requested
+						 */
+						base = base & 0xFFFFFFF0;
+						base = (~base) + 1;
+
+						type = 0;
+					}
+				} else {
+					base = 0x0L;
+					type = 0;
+				}
+
+				/* Save information in slot structure */
+				func->base_length[(cloop - 0x10) >> 2] = base;
+				func->base_type[(cloop - 0x10) >> 2] = type;
+
+			}	/* End of base register loop */
+
+		} else {	  /* Some other unknown header type */
+		}
+
+		/* find the next device in this slot */
+		func = cpqhp_slot_find(func->bus, func->device, index++);
+	}
+
+	return(0);
+}
+
+
+/*
+ * cpqhp_save_used_resources
+ *
+ * Stores used resource information for existing boards.  this is
+ * for boards that were in the system when this driver was loaded.
+ * this function is for hot plug ADD
+ *
+ * returns 0 if success
+ */
+int cpqhp_save_used_resources(struct controller *ctrl, struct pci_func *func)
+{
+	u8 cloop;
+	u8 header_type;
+	u8 secondary_bus;
+	u8 temp_byte;
+	u8 b_base;
+	u8 b_length;
+	u16 command;
+	u16 save_command;
+	u16 w_base;
+	u16 w_length;
+	u32 temp_register;
+	u32 save_base;
+	u32 base;
+	int index = 0;
+	struct pci_resource *mem_node;
+	struct pci_resource *p_mem_node;
+	struct pci_resource *io_node;
+	struct pci_resource *bus_node;
+	struct pci_bus *pci_bus = ctrl->pci_bus;
+	unsigned int devfn;
+
+	func = cpqhp_slot_find(func->bus, func->device, index++);
+
+	while ((func != NULL) && func->is_a_board) {
+		pci_bus->number = func->bus;
+		devfn = PCI_DEVFN(func->device, func->function);
+
+		/* Save the command register */
+		pci_bus_read_config_word(pci_bus, devfn, PCI_COMMAND, &save_command);
+
+		/* disable card */
+		command = 0x00;
+		pci_bus_write_config_word(pci_bus, devfn, PCI_COMMAND, command);
+
+		/* Check for Bridge */
+		pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
+
+		if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+			/* Clear Bridge Control Register */
+			command = 0x00;
+			pci_bus_write_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, command);
+			pci_bus_read_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, &secondary_bus);
+			pci_bus_read_config_byte(pci_bus, devfn, PCI_SUBORDINATE_BUS, &temp_byte);
+
+			bus_node = kmalloc(sizeof(*bus_node), GFP_KERNEL);
+			if (!bus_node)
+				return -ENOMEM;
+
+			bus_node->base = secondary_bus;
+			bus_node->length = temp_byte - secondary_bus + 1;
+
+			bus_node->next = func->bus_head;
+			func->bus_head = bus_node;
+
+			/* Save IO base and Limit registers */
+			pci_bus_read_config_byte(pci_bus, devfn, PCI_IO_BASE, &b_base);
+			pci_bus_read_config_byte(pci_bus, devfn, PCI_IO_LIMIT, &b_length);
+
+			if ((b_base <= b_length) && (save_command & 0x01)) {
+				io_node = kmalloc(sizeof(*io_node), GFP_KERNEL);
+				if (!io_node)
+					return -ENOMEM;
+
+				io_node->base = (b_base & 0xF0) << 8;
+				io_node->length = (b_length - b_base + 0x10) << 8;
+
+				io_node->next = func->io_head;
+				func->io_head = io_node;
+			}
+
+			/* Save memory base and Limit registers */
+			pci_bus_read_config_word(pci_bus, devfn, PCI_MEMORY_BASE, &w_base);
+			pci_bus_read_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, &w_length);
+
+			if ((w_base <= w_length) && (save_command & 0x02)) {
+				mem_node = kmalloc(sizeof(*mem_node), GFP_KERNEL);
+				if (!mem_node)
+					return -ENOMEM;
+
+				mem_node->base = w_base << 16;
+				mem_node->length = (w_length - w_base + 0x10) << 16;
+
+				mem_node->next = func->mem_head;
+				func->mem_head = mem_node;
+			}
+
+			/* Save prefetchable memory base and Limit registers */
+			pci_bus_read_config_word(pci_bus, devfn, PCI_PREF_MEMORY_BASE, &w_base);
+			pci_bus_read_config_word(pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, &w_length);
+
+			if ((w_base <= w_length) && (save_command & 0x02)) {
+				p_mem_node = kmalloc(sizeof(*p_mem_node), GFP_KERNEL);
+				if (!p_mem_node)
+					return -ENOMEM;
+
+				p_mem_node->base = w_base << 16;
+				p_mem_node->length = (w_length - w_base + 0x10) << 16;
+
+				p_mem_node->next = func->p_mem_head;
+				func->p_mem_head = p_mem_node;
+			}
+			/* Figure out IO and memory base lengths */
+			for (cloop = 0x10; cloop <= 0x14; cloop += 4) {
+				pci_bus_read_config_dword(pci_bus, devfn, cloop, &save_base);
+
+				temp_register = 0xFFFFFFFF;
+				pci_bus_write_config_dword(pci_bus, devfn, cloop, temp_register);
+				pci_bus_read_config_dword(pci_bus, devfn, cloop, &base);
+
+				temp_register = base;
+
+				/* If this register is implemented */
+				if (base) {
+					if (((base & 0x03L) == 0x01)
+					    && (save_command & 0x01)) {
+						/* IO base
+						 * set temp_register = amount
+						 * of IO space requested
+						 */
+						temp_register = base & 0xFFFFFFFE;
+						temp_register = (~temp_register) + 1;
+
+						io_node = kmalloc(sizeof(*io_node),
+								GFP_KERNEL);
+						if (!io_node)
+							return -ENOMEM;
+
+						io_node->base =
+						save_base & (~0x03L);
+						io_node->length = temp_register;
+
+						io_node->next = func->io_head;
+						func->io_head = io_node;
+					} else
+						if (((base & 0x0BL) == 0x08)
+						    && (save_command & 0x02)) {
+						/* prefetchable memory base */
+						temp_register = base & 0xFFFFFFF0;
+						temp_register = (~temp_register) + 1;
+
+						p_mem_node = kmalloc(sizeof(*p_mem_node),
+								GFP_KERNEL);
+						if (!p_mem_node)
+							return -ENOMEM;
+
+						p_mem_node->base = save_base & (~0x0FL);
+						p_mem_node->length = temp_register;
+
+						p_mem_node->next = func->p_mem_head;
+						func->p_mem_head = p_mem_node;
+					} else
+						if (((base & 0x0BL) == 0x00)
+						    && (save_command & 0x02)) {
+						/* prefetchable memory base */
+						temp_register = base & 0xFFFFFFF0;
+						temp_register = (~temp_register) + 1;
+
+						mem_node = kmalloc(sizeof(*mem_node),
+								GFP_KERNEL);
+						if (!mem_node)
+							return -ENOMEM;
+
+						mem_node->base = save_base & (~0x0FL);
+						mem_node->length = temp_register;
+
+						mem_node->next = func->mem_head;
+						func->mem_head = mem_node;
+					} else
+						return(1);
+				}
+			}	/* End of base register loop */
+		/* Standard header */
+		} else if ((header_type & 0x7F) == 0x00) {
+			/* Figure out IO and memory base lengths */
+			for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
+				pci_bus_read_config_dword(pci_bus, devfn, cloop, &save_base);
+
+				temp_register = 0xFFFFFFFF;
+				pci_bus_write_config_dword(pci_bus, devfn, cloop, temp_register);
+				pci_bus_read_config_dword(pci_bus, devfn, cloop, &base);
+
+				temp_register = base;
+
+				/* If this register is implemented */
+				if (base) {
+					if (((base & 0x03L) == 0x01)
+					    && (save_command & 0x01)) {
+						/* IO base
+						 * set temp_register = amount
+						 * of IO space requested
+						 */
+						temp_register = base & 0xFFFFFFFE;
+						temp_register = (~temp_register) + 1;
+
+						io_node = kmalloc(sizeof(*io_node),
+								GFP_KERNEL);
+						if (!io_node)
+							return -ENOMEM;
+
+						io_node->base = save_base & (~0x01L);
+						io_node->length = temp_register;
+
+						io_node->next = func->io_head;
+						func->io_head = io_node;
+					} else
+						if (((base & 0x0BL) == 0x08)
+						    && (save_command & 0x02)) {
+						/* prefetchable memory base */
+						temp_register = base & 0xFFFFFFF0;
+						temp_register = (~temp_register) + 1;
+
+						p_mem_node = kmalloc(sizeof(*p_mem_node),
+								GFP_KERNEL);
+						if (!p_mem_node)
+							return -ENOMEM;
+
+						p_mem_node->base = save_base & (~0x0FL);
+						p_mem_node->length = temp_register;
+
+						p_mem_node->next = func->p_mem_head;
+						func->p_mem_head = p_mem_node;
+					} else
+						if (((base & 0x0BL) == 0x00)
+						    && (save_command & 0x02)) {
+						/* prefetchable memory base */
+						temp_register = base & 0xFFFFFFF0;
+						temp_register = (~temp_register) + 1;
+
+						mem_node = kmalloc(sizeof(*mem_node),
+								GFP_KERNEL);
+						if (!mem_node)
+							return -ENOMEM;
+
+						mem_node->base = save_base & (~0x0FL);
+						mem_node->length = temp_register;
+
+						mem_node->next = func->mem_head;
+						func->mem_head = mem_node;
+					} else
+						return(1);
+				}
+			}	/* End of base register loop */
+		}
+
+		/* find the next device in this slot */
+		func = cpqhp_slot_find(func->bus, func->device, index++);
+	}
+
+	return 0;
+}
+
+
+/*
+ * cpqhp_configure_board
+ *
+ * Copies saved configuration information to one slot.
+ * this is called recursively for bridge devices.
+ * this is for hot plug REPLACE!
+ *
+ * returns 0 if success
+ */
+int cpqhp_configure_board(struct controller *ctrl, struct pci_func *func)
+{
+	int cloop;
+	u8 header_type;
+	u8 secondary_bus;
+	int sub_bus;
+	struct pci_func *next;
+	u32 temp;
+	u32 rc;
+	int index = 0;
+	struct pci_bus *pci_bus = ctrl->pci_bus;
+	unsigned int devfn;
+
+	func = cpqhp_slot_find(func->bus, func->device, index++);
+
+	while (func != NULL) {
+		pci_bus->number = func->bus;
+		devfn = PCI_DEVFN(func->device, func->function);
+
+		/* Start at the top of config space so that the control
+		 * registers are programmed last
+		 */
+		for (cloop = 0x3C; cloop > 0; cloop -= 4)
+			pci_bus_write_config_dword(pci_bus, devfn, cloop, func->config_space[cloop >> 2]);
+
+		pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
+
+		/* If this is a bridge device, restore subordinate devices */
+		if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+			pci_bus_read_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, &secondary_bus);
+
+			sub_bus = (int) secondary_bus;
+
+			next = cpqhp_slot_list[sub_bus];
+
+			while (next != NULL) {
+				rc = cpqhp_configure_board(ctrl, next);
+				if (rc)
+					return rc;
+
+				next = next->next;
+			}
+		} else {
+
+			/* Check all the base Address Registers to make sure
+			 * they are the same.  If not, the board is different.
+			 */
+
+			for (cloop = 16; cloop < 40; cloop += 4) {
+				pci_bus_read_config_dword(pci_bus, devfn, cloop, &temp);
+
+				if (temp != func->config_space[cloop >> 2]) {
+					dbg("Config space compare failure!!! offset = %x\n", cloop);
+					dbg("bus = %x, device = %x, function = %x\n", func->bus, func->device, func->function);
+					dbg("temp = %x, config space = %x\n\n", temp, func->config_space[cloop >> 2]);
+					return 1;
+				}
+			}
+		}
+
+		func->configured = 1;
+
+		func = cpqhp_slot_find(func->bus, func->device, index++);
+	}
+
+	return 0;
+}
+
+
+/*
+ * cpqhp_valid_replace
+ *
+ * this function checks to see if a board is the same as the
+ * one it is replacing.  this check will detect if the device's
+ * vendor or device id's are the same
+ *
+ * returns 0 if the board is the same nonzero otherwise
+ */
+int cpqhp_valid_replace(struct controller *ctrl, struct pci_func *func)
+{
+	u8 cloop;
+	u8 header_type;
+	u8 secondary_bus;
+	u8 type;
+	u32 temp_register = 0;
+	u32 base;
+	u32 rc;
+	struct pci_func *next;
+	int index = 0;
+	struct pci_bus *pci_bus = ctrl->pci_bus;
+	unsigned int devfn;
+
+	if (!func->is_a_board)
+		return(ADD_NOT_SUPPORTED);
+
+	func = cpqhp_slot_find(func->bus, func->device, index++);
+
+	while (func != NULL) {
+		pci_bus->number = func->bus;
+		devfn = PCI_DEVFN(func->device, func->function);
+
+		pci_bus_read_config_dword(pci_bus, devfn, PCI_VENDOR_ID, &temp_register);
+
+		/* No adapter present */
+		if (temp_register == 0xFFFFFFFF)
+			return(NO_ADAPTER_PRESENT);
+
+		if (temp_register != func->config_space[0])
+			return(ADAPTER_NOT_SAME);
+
+		/* Check for same revision number and class code */
+		pci_bus_read_config_dword(pci_bus, devfn, PCI_CLASS_REVISION, &temp_register);
+
+		/* Adapter not the same */
+		if (temp_register != func->config_space[0x08 >> 2])
+			return(ADAPTER_NOT_SAME);
+
+		/* Check for Bridge */
+		pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
+
+		if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+			/* In order to continue checking, we must program the
+			 * bus registers in the bridge to respond to accesses
+			 * for its subordinate bus(es)
+			 */
+
+			temp_register = func->config_space[0x18 >> 2];
+			pci_bus_write_config_dword(pci_bus, devfn, PCI_PRIMARY_BUS, temp_register);
+
+			secondary_bus = (temp_register >> 8) & 0xFF;
+
+			next = cpqhp_slot_list[secondary_bus];
+
+			while (next != NULL) {
+				rc = cpqhp_valid_replace(ctrl, next);
+				if (rc)
+					return rc;
+
+				next = next->next;
+			}
+
+		}
+		/* Check to see if it is a standard config header */
+		else if ((header_type & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
+			/* Check subsystem vendor and ID */
+			pci_bus_read_config_dword(pci_bus, devfn, PCI_SUBSYSTEM_VENDOR_ID, &temp_register);
+
+			if (temp_register != func->config_space[0x2C >> 2]) {
+				/* If it's a SMART-2 and the register isn't
+				 * filled in, ignore the difference because
+				 * they just have an old rev of the firmware
+				 */
+				if (!((func->config_space[0] == 0xAE100E11)
+				      && (temp_register == 0x00L)))
+					return(ADAPTER_NOT_SAME);
+			}
+			/* Figure out IO and memory base lengths */
+			for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
+				temp_register = 0xFFFFFFFF;
+				pci_bus_write_config_dword(pci_bus, devfn, cloop, temp_register);
+				pci_bus_read_config_dword(pci_bus, devfn, cloop, &base);
+
+				/* If this register is implemented */
+				if (base) {
+					if (base & 0x01L) {
+						/* IO base
+						 * set base = amount of IO
+						 * space requested
+						 */
+						base = base & 0xFFFFFFFE;
+						base = (~base) + 1;
+
+						type = 1;
+					} else {
+						/* memory base */
+						base = base & 0xFFFFFFF0;
+						base = (~base) + 1;
+
+						type = 0;
+					}
+				} else {
+					base = 0x0L;
+					type = 0;
+				}
+
+				/* Check information in slot structure */
+				if (func->base_length[(cloop - 0x10) >> 2] != base)
+					return(ADAPTER_NOT_SAME);
+
+				if (func->base_type[(cloop - 0x10) >> 2] != type)
+					return(ADAPTER_NOT_SAME);
+
+			}	/* End of base register loop */
+
+		}		/* End of (type 0 config space) else */
+		else {
+			/* this is not a type 0 or 1 config space header so
+			 * we don't know how to do it
+			 */
+			return(DEVICE_TYPE_NOT_SUPPORTED);
+		}
+
+		/* Get the next function */
+		func = cpqhp_slot_find(func->bus, func->device, index++);
+	}
+
+
+	return 0;
+}
+
+
+/*
+ * cpqhp_find_available_resources
+ *
+ * Finds available memory, IO, and IRQ resources for programming
+ * devices which may be added to the system
+ * this function is for hot plug ADD!
+ *
+ * returns 0 if success
+ */
+int cpqhp_find_available_resources(struct controller *ctrl, void __iomem *rom_start)
+{
+	u8 temp;
+	u8 populated_slot;
+	u8 bridged_slot;
+	void __iomem *one_slot;
+	void __iomem *rom_resource_table;
+	struct pci_func *func = NULL;
+	int i = 10, index;
+	u32 temp_dword, rc;
+	struct pci_resource *mem_node;
+	struct pci_resource *p_mem_node;
+	struct pci_resource *io_node;
+	struct pci_resource *bus_node;
+
+	rom_resource_table = detect_HRT_floating_pointer(rom_start, rom_start+0xffff);
+	dbg("rom_resource_table = %p\n", rom_resource_table);
+
+	if (rom_resource_table == NULL)
+		return -ENODEV;
+
+	/* Sum all resources and setup resource maps */
+	unused_IRQ = readl(rom_resource_table + UNUSED_IRQ);
+	dbg("unused_IRQ = %x\n", unused_IRQ);
+
+	temp = 0;
+	while (unused_IRQ) {
+		if (unused_IRQ & 1) {
+			cpqhp_disk_irq = temp;
+			break;
+		}
+		unused_IRQ = unused_IRQ >> 1;
+		temp++;
+	}
+
+	dbg("cpqhp_disk_irq= %d\n", cpqhp_disk_irq);
+	unused_IRQ = unused_IRQ >> 1;
+	temp++;
+
+	while (unused_IRQ) {
+		if (unused_IRQ & 1) {
+			cpqhp_nic_irq = temp;
+			break;
+		}
+		unused_IRQ = unused_IRQ >> 1;
+		temp++;
+	}
+
+	dbg("cpqhp_nic_irq= %d\n", cpqhp_nic_irq);
+	unused_IRQ = readl(rom_resource_table + PCIIRQ);
+
+	temp = 0;
+
+	if (!cpqhp_nic_irq)
+		cpqhp_nic_irq = ctrl->cfgspc_irq;
+
+	if (!cpqhp_disk_irq)
+		cpqhp_disk_irq = ctrl->cfgspc_irq;
+
+	dbg("cpqhp_disk_irq, cpqhp_nic_irq= %d, %d\n", cpqhp_disk_irq, cpqhp_nic_irq);
+
+	rc = compaq_nvram_load(rom_start, ctrl);
+	if (rc)
+		return rc;
+
+	one_slot = rom_resource_table + sizeof(struct hrt);
+
+	i = readb(rom_resource_table + NUMBER_OF_ENTRIES);
+	dbg("number_of_entries = %d\n", i);
+
+	if (!readb(one_slot + SECONDARY_BUS))
+		return 1;
+
+	dbg("dev|IO base|length|Mem base|length|Pre base|length|PB SB MB\n");
+
+	while (i && readb(one_slot + SECONDARY_BUS)) {
+		u8 dev_func = readb(one_slot + DEV_FUNC);
+		u8 primary_bus = readb(one_slot + PRIMARY_BUS);
+		u8 secondary_bus = readb(one_slot + SECONDARY_BUS);
+		u8 max_bus = readb(one_slot + MAX_BUS);
+		u16 io_base = readw(one_slot + IO_BASE);
+		u16 io_length = readw(one_slot + IO_LENGTH);
+		u16 mem_base = readw(one_slot + MEM_BASE);
+		u16 mem_length = readw(one_slot + MEM_LENGTH);
+		u16 pre_mem_base = readw(one_slot + PRE_MEM_BASE);
+		u16 pre_mem_length = readw(one_slot + PRE_MEM_LENGTH);
+
+		dbg("%2.2x | %4.4x  | %4.4x | %4.4x   | %4.4x | %4.4x   | %4.4x |%2.2x %2.2x %2.2x\n",
+		    dev_func, io_base, io_length, mem_base, mem_length, pre_mem_base, pre_mem_length,
+		    primary_bus, secondary_bus, max_bus);
+
+		/* If this entry isn't for our controller's bus, ignore it */
+		if (primary_bus != ctrl->bus) {
+			i--;
+			one_slot += sizeof(struct slot_rt);
+			continue;
+		}
+		/* find out if this entry is for an occupied slot */
+		ctrl->pci_bus->number = primary_bus;
+		pci_bus_read_config_dword(ctrl->pci_bus, dev_func, PCI_VENDOR_ID, &temp_dword);
+		dbg("temp_D_word = %x\n", temp_dword);
+
+		if (temp_dword != 0xFFFFFFFF) {
+			index = 0;
+			func = cpqhp_slot_find(primary_bus, dev_func >> 3, 0);
+
+			while (func && (func->function != (dev_func & 0x07))) {
+				dbg("func = %p (bus, dev, fun) = (%d, %d, %d)\n", func, primary_bus, dev_func >> 3, index);
+				func = cpqhp_slot_find(primary_bus, dev_func >> 3, index++);
+			}
+
+			/* If we can't find a match, skip this table entry */
+			if (!func) {
+				i--;
+				one_slot += sizeof(struct slot_rt);
+				continue;
+			}
+			/* this may not work and shouldn't be used */
+			if (secondary_bus != primary_bus)
+				bridged_slot = 1;
+			else
+				bridged_slot = 0;
+
+			populated_slot = 1;
+		} else {
+			populated_slot = 0;
+			bridged_slot = 0;
+		}
+
+
+		/* If we've got a valid IO base, use it */
+
+		temp_dword = io_base + io_length;
+
+		if ((io_base) && (temp_dword < 0x10000)) {
+			io_node = kmalloc(sizeof(*io_node), GFP_KERNEL);
+			if (!io_node)
+				return -ENOMEM;
+
+			io_node->base = io_base;
+			io_node->length = io_length;
+
+			dbg("found io_node(base, length) = %x, %x\n",
+					io_node->base, io_node->length);
+			dbg("populated slot =%d \n", populated_slot);
+			if (!populated_slot) {
+				io_node->next = ctrl->io_head;
+				ctrl->io_head = io_node;
+			} else {
+				io_node->next = func->io_head;
+				func->io_head = io_node;
+			}
+		}
+
+		/* If we've got a valid memory base, use it */
+		temp_dword = mem_base + mem_length;
+		if ((mem_base) && (temp_dword < 0x10000)) {
+			mem_node = kmalloc(sizeof(*mem_node), GFP_KERNEL);
+			if (!mem_node)
+				return -ENOMEM;
+
+			mem_node->base = mem_base << 16;
+
+			mem_node->length = mem_length << 16;
+
+			dbg("found mem_node(base, length) = %x, %x\n",
+					mem_node->base, mem_node->length);
+			dbg("populated slot =%d \n", populated_slot);
+			if (!populated_slot) {
+				mem_node->next = ctrl->mem_head;
+				ctrl->mem_head = mem_node;
+			} else {
+				mem_node->next = func->mem_head;
+				func->mem_head = mem_node;
+			}
+		}
+
+		/* If we've got a valid prefetchable memory base, and
+		 * the base + length isn't greater than 0xFFFF
+		 */
+		temp_dword = pre_mem_base + pre_mem_length;
+		if ((pre_mem_base) && (temp_dword < 0x10000)) {
+			p_mem_node = kmalloc(sizeof(*p_mem_node), GFP_KERNEL);
+			if (!p_mem_node)
+				return -ENOMEM;
+
+			p_mem_node->base = pre_mem_base << 16;
+
+			p_mem_node->length = pre_mem_length << 16;
+			dbg("found p_mem_node(base, length) = %x, %x\n",
+					p_mem_node->base, p_mem_node->length);
+			dbg("populated slot =%d \n", populated_slot);
+
+			if (!populated_slot) {
+				p_mem_node->next = ctrl->p_mem_head;
+				ctrl->p_mem_head = p_mem_node;
+			} else {
+				p_mem_node->next = func->p_mem_head;
+				func->p_mem_head = p_mem_node;
+			}
+		}
+
+		/* If we've got a valid bus number, use it
+		 * The second condition is to ignore bus numbers on
+		 * populated slots that don't have PCI-PCI bridges
+		 */
+		if (secondary_bus && (secondary_bus != primary_bus)) {
+			bus_node = kmalloc(sizeof(*bus_node), GFP_KERNEL);
+			if (!bus_node)
+				return -ENOMEM;
+
+			bus_node->base = secondary_bus;
+			bus_node->length = max_bus - secondary_bus + 1;
+			dbg("found bus_node(base, length) = %x, %x\n",
+					bus_node->base, bus_node->length);
+			dbg("populated slot =%d \n", populated_slot);
+			if (!populated_slot) {
+				bus_node->next = ctrl->bus_head;
+				ctrl->bus_head = bus_node;
+			} else {
+				bus_node->next = func->bus_head;
+				func->bus_head = bus_node;
+			}
+		}
+
+		i--;
+		one_slot += sizeof(struct slot_rt);
+	}
+
+	/* If all of the following fail, we don't have any resources for
+	 * hot plug add
+	 */
+	rc = 1;
+	rc &= cpqhp_resource_sort_and_combine(&(ctrl->mem_head));
+	rc &= cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head));
+	rc &= cpqhp_resource_sort_and_combine(&(ctrl->io_head));
+	rc &= cpqhp_resource_sort_and_combine(&(ctrl->bus_head));
+
+	return rc;
+}
+
+
+/*
+ * cpqhp_return_board_resources
+ *
+ * this routine returns all resources allocated to a board to
+ * the available pool.
+ *
+ * returns 0 if success
+ */
+int cpqhp_return_board_resources(struct pci_func *func, struct resource_lists *resources)
+{
+	int rc = 0;
+	struct pci_resource *node;
+	struct pci_resource *t_node;
+	dbg("%s\n", __func__);
+
+	if (!func)
+		return 1;
+
+	node = func->io_head;
+	func->io_head = NULL;
+	while (node) {
+		t_node = node->next;
+		return_resource(&(resources->io_head), node);
+		node = t_node;
+	}
+
+	node = func->mem_head;
+	func->mem_head = NULL;
+	while (node) {
+		t_node = node->next;
+		return_resource(&(resources->mem_head), node);
+		node = t_node;
+	}
+
+	node = func->p_mem_head;
+	func->p_mem_head = NULL;
+	while (node) {
+		t_node = node->next;
+		return_resource(&(resources->p_mem_head), node);
+		node = t_node;
+	}
+
+	node = func->bus_head;
+	func->bus_head = NULL;
+	while (node) {
+		t_node = node->next;
+		return_resource(&(resources->bus_head), node);
+		node = t_node;
+	}
+
+	rc |= cpqhp_resource_sort_and_combine(&(resources->mem_head));
+	rc |= cpqhp_resource_sort_and_combine(&(resources->p_mem_head));
+	rc |= cpqhp_resource_sort_and_combine(&(resources->io_head));
+	rc |= cpqhp_resource_sort_and_combine(&(resources->bus_head));
+
+	return rc;
+}
+
+
+/*
+ * cpqhp_destroy_resource_list
+ *
+ * Puts node back in the resource list pointed to by head
+ */
+void cpqhp_destroy_resource_list(struct resource_lists *resources)
+{
+	struct pci_resource *res, *tres;
+
+	res = resources->io_head;
+	resources->io_head = NULL;
+
+	while (res) {
+		tres = res;
+		res = res->next;
+		kfree(tres);
+	}
+
+	res = resources->mem_head;
+	resources->mem_head = NULL;
+
+	while (res) {
+		tres = res;
+		res = res->next;
+		kfree(tres);
+	}
+
+	res = resources->p_mem_head;
+	resources->p_mem_head = NULL;
+
+	while (res) {
+		tres = res;
+		res = res->next;
+		kfree(tres);
+	}
+
+	res = resources->bus_head;
+	resources->bus_head = NULL;
+
+	while (res) {
+		tres = res;
+		res = res->next;
+		kfree(tres);
+	}
+}
+
+
+/*
+ * cpqhp_destroy_board_resources
+ *
+ * Puts node back in the resource list pointed to by head
+ */
+void cpqhp_destroy_board_resources(struct pci_func *func)
+{
+	struct pci_resource *res, *tres;
+
+	res = func->io_head;
+	func->io_head = NULL;
+
+	while (res) {
+		tres = res;
+		res = res->next;
+		kfree(tres);
+	}
+
+	res = func->mem_head;
+	func->mem_head = NULL;
+
+	while (res) {
+		tres = res;
+		res = res->next;
+		kfree(tres);
+	}
+
+	res = func->p_mem_head;
+	func->p_mem_head = NULL;
+
+	while (res) {
+		tres = res;
+		res = res->next;
+		kfree(tres);
+	}
+
+	res = func->bus_head;
+	func->bus_head = NULL;
+
+	while (res) {
+		tres = res;
+		res = res->next;
+		kfree(tres);
+	}
+}