[PATCH] patch 1/8] pciehp: use the PCI core for hotplug resource management

This patch converts the pci express hotplug controller driver
to use the PCI core for resource management. This eliminates a
lot of duplicated code and integrates pciehp with the system's
normal PCI handling code.

Signed-off-by: Rajesh Shah <rajesh.shah@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 29 insertions, 1534 deletions

diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 898f6da6f0d..412783e0ef4 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -42,10 +42,6 @@
 #include "pciehp.h"
 #include "pciehprm.h"
 
-static u32 configure_new_device(struct controller *ctrl, struct pci_func *func,
-	u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev);
-static int configure_new_function( struct controller *ctrl, struct pci_func *func,
-	u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev);
 static void interrupt_event_handler(struct controller *ctrl);
 
 static struct semaphore event_semaphore;	/* mutex for process loop (up if something to process) */
@@ -252,627 +248,6 @@ u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id)
 	return rc;
 }
 
-
-/**
- * sort_by_size: sort nodes by their length, smallest first.
- *
- * @head: list to sort
- */
-static int sort_by_size(struct pci_resource **head)
-{
-	struct pci_resource *current_res;
-	struct pci_resource *next_res;
-	int out_of_order = 1;
-
-	if (!(*head))
-		return 1;
-
-	if (!((*head)->next))
-		return 0;
-
-	while (out_of_order) {
-		out_of_order = 0;
-
-		/* Special case for swapping list head */
-		if (((*head)->next) &&
-		    ((*head)->length > (*head)->next->length)) {
-			out_of_order++;
-			current_res = *head;
-			*head = (*head)->next;
-			current_res->next = (*head)->next;
-			(*head)->next = current_res;
-		}
-
-		current_res = *head;
-
-		while (current_res->next && current_res->next->next) {
-			if (current_res->next->length > current_res->next->next->length) {
-				out_of_order++;
-				next_res = current_res->next;
-				current_res->next = current_res->next->next;
-				current_res = current_res->next;
-				next_res->next = current_res->next;
-				current_res->next = next_res;
-			} else
-				current_res = current_res->next;
-		}
-	}  /* End of out_of_order loop */
-
-	return 0;
-}
-
-
-/*
- * sort_by_max_size
- *
- * Sorts nodes on the list by their length.
- * Largest first.
- *
- */
-static int sort_by_max_size(struct pci_resource **head)
-{
-	struct pci_resource *current_res;
-	struct pci_resource *next_res;
-	int out_of_order = 1;
-
-	if (!(*head))
-		return 1;
-
-	if (!((*head)->next))
-		return 0;
-
-	while (out_of_order) {
-		out_of_order = 0;
-
-		/* Special case for swapping list head */
-		if (((*head)->next) &&
-		    ((*head)->length < (*head)->next->length)) {
-			out_of_order++;
-			current_res = *head;
-			*head = (*head)->next;
-			current_res->next = (*head)->next;
-			(*head)->next = current_res;
-		}
-
-		current_res = *head;
-
-		while (current_res->next && current_res->next->next) {
-			if (current_res->next->length < current_res->next->next->length) {
-				out_of_order++;
-				next_res = current_res->next;
-				current_res->next = current_res->next->next;
-				current_res = current_res->next;
-				next_res->next = current_res->next;
-				current_res->next = next_res;
-			} else
-				current_res = current_res->next;
-		}
-	}  /* End of out_of_order loop */
-
-	return 0;
-}
-
-
-/**
- * do_pre_bridge_resource_split: return one unused resource node
- * @head: list to scan
- *
- */
-static struct pci_resource *
-do_pre_bridge_resource_split(struct pci_resource **head,
-				struct pci_resource **orig_head, u32 alignment)
-{
-	struct pci_resource *prevnode = NULL;
-	struct pci_resource *node;
-	struct pci_resource *split_node;
-	u32 rc;
-	u32 temp_dword;
-	dbg("do_pre_bridge_resource_split\n");
-
-	if (!(*head) || !(*orig_head))
-		return NULL;
-
-	rc = pciehp_resource_sort_and_combine(head);
-
-	if (rc)
-		return NULL;
-
-	if ((*head)->base != (*orig_head)->base)
-		return NULL;
-
-	if ((*head)->length == (*orig_head)->length)
-		return NULL;
-
-
-	/* If we got here, there the bridge requires some of the resource, but
-	 *  we may be able to split some off of the front
-	 */	
-	node = *head;
-
-	if (node->length & (alignment -1)) {
-		/* this one isn't an aligned length, so we'll make a new entry
-		 * and split it up.
-		 */
-		split_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
-
-		if (!split_node)
-			return NULL;
-
-		temp_dword = (node->length | (alignment-1)) + 1 - alignment;
-
-		split_node->base = node->base;
-		split_node->length = temp_dword;
-
-		node->length -= temp_dword;
-		node->base += split_node->length;
-
-		/* Put it in the list */
-		*head = split_node;
-		split_node->next = node;
-	}
-
-	if (node->length < alignment)
-		return NULL;
-
-	/* Now unlink it */
-	if (*head == node) {
-		*head = node->next;
-	} else {
-		prevnode = *head;
-		while (prevnode->next != node)
-			prevnode = prevnode->next;
-
-		prevnode->next = node->next;
-	}
-	node->next = NULL;
-
-	return node;
-}
-
-
-/**
- * do_bridge_resource_split: return one unused resource node
- * @head: list to scan
- *
- */
-static struct pci_resource *
-do_bridge_resource_split(struct pci_resource **head, u32 alignment)
-{
-	struct pci_resource *prevnode = NULL;
-	struct pci_resource *node;
-	u32 rc;
-	u32 temp_dword;
-
-	if (!(*head))
-		return NULL;
-
-	rc = pciehp_resource_sort_and_combine(head);
-
-	if (rc)
-		return NULL;
-
-	node = *head;
-
-	while (node->next) {
-		prevnode = node;
-		node = node->next;
-		kfree(prevnode);
-	}
-
-	if (node->length < alignment) {
-		kfree(node);
-		return NULL;
-	}
-
-	if (node->base & (alignment - 1)) {
-		/* Short circuit if adjusted size is too small */
-		temp_dword = (node->base | (alignment-1)) + 1;
-		if ((node->length - (temp_dword - node->base)) < alignment) {
-			kfree(node);
-			return NULL;
-		}
-
-		node->length -= (temp_dword - node->base);
-		node->base = temp_dword;
-	}
-
-	if (node->length & (alignment - 1)) {
-		/* There's stuff in use after this node */
-		kfree(node);
-		return NULL;
-	}
-
-	return node;
-}
-
-
-/*
- * get_io_resource
- *
- * this function sorts the resource list by size and then
- * returns the first node of "size" length that is not in the
- * ISA aliasing window.  If it finds a node larger than "size"
- * it will split it up.
- *
- * size must be a power of two.
- */
-static struct pci_resource *get_io_resource(struct pci_resource **head, u32 size)
-{
-	struct pci_resource *prevnode;
-	struct pci_resource *node;
-	struct pci_resource *split_node = NULL;
-	u32 temp_dword;
-
-	if (!(*head))
-		return NULL;
-
-	if ( pciehp_resource_sort_and_combine(head) )
-		return NULL;
-
-	if ( sort_by_size(head) )
-		return NULL;
-
-	for (node = *head; node; node = node->next) {
-		if (node->length < size)
-			continue;
-
-		if (node->base & (size - 1)) {
-			/* this one isn't base aligned properly
-			   so we'll make a new entry and split it up */
-			temp_dword = (node->base | (size-1)) + 1;
-
-			/*/ Short circuit if adjusted size is too small */
-			if ((node->length - (temp_dword - node->base)) < size)
-				continue;
-
-			split_node = kmalloc(sizeof(struct pci_resource),
-						GFP_KERNEL);
-
-			if (!split_node)
-				return NULL;
-
-			split_node->base = node->base;
-			split_node->length = temp_dword - node->base;
-			node->base = temp_dword;
-			node->length -= split_node->length;
-
-			/* Put it in the list */
-			split_node->next = node->next;
-			node->next = split_node;
-		} /* End of non-aligned base */
-
-		/* Don't need to check if too small since we already did */
-		if (node->length > size) {
-			/* this one is longer than we need
-			   so we'll make a new entry and split it up */
-			split_node = kmalloc(sizeof(struct pci_resource),
-						GFP_KERNEL);
-
-			if (!split_node)
-				return NULL;
-
-			split_node->base = node->base + size;
-			split_node->length = node->length - size;
-			node->length = size;
-
-			/* Put it in the list */
-			split_node->next = node->next;
-			node->next = split_node;
-		}  /* End of too big on top end */
-
-		/* For IO make sure it's not in the ISA aliasing space */
-		if (node->base & 0x300L)
-			continue;
-
-		/* If we got here, then it is the right size 
-		   Now take it out of the list */
-		if (*head == node) {
-			*head = node->next;
-		} else {
-			prevnode = *head;
-			while (prevnode->next != node)
-				prevnode = prevnode->next;
-
-			prevnode->next = node->next;
-		}
-		node->next = NULL;
-		/* Stop looping */
-		break;
-	}
-
-	return node;
-}
-
-
-/*
- * get_max_resource
- *
- * Gets the largest node that is at least "size" big from the
- * list pointed to by head.  It aligns the node on top and bottom
- * to "size" alignment before returning it.
- * J.I. modified to put max size limits of; 64M->32M->16M->8M->4M->1M
- *  This is needed to avoid allocating entire ACPI _CRS res to one child bridge/slot.
- */
-static struct pci_resource *get_max_resource(struct pci_resource **head, u32 size)
-{
-	struct pci_resource *max;
-	struct pci_resource *temp;
-	struct pci_resource *split_node;
-	u32 temp_dword;
-	u32 max_size[] = { 0x4000000, 0x2000000, 0x1000000, 0x0800000, 0x0400000, 0x0200000, 0x0100000, 0x00 };
-	int i;
-
-	if (!(*head))
-		return NULL;
-
-	if (pciehp_resource_sort_and_combine(head))
-		return NULL;
-
-	if (sort_by_max_size(head))
-		return NULL;
-
-	for (max = *head;max; max = max->next) {
-
-		/* If not big enough we could probably just bail, 
-		   instead we'll continue to the next. */
-		if (max->length < size)
-			continue;
-
-		if (max->base & (size - 1)) {
-			/* this one isn't base aligned properly
-			   so we'll make a new entry and split it up */
-			temp_dword = (max->base | (size-1)) + 1;
-
-			/* Short circuit if adjusted size is too small */
-			if ((max->length - (temp_dword - max->base)) < size)
-				continue;
-
-			split_node = kmalloc(sizeof(struct pci_resource),
-						GFP_KERNEL);
-
-			if (!split_node)
-				return NULL;
-
-			split_node->base = max->base;
-			split_node->length = temp_dword - max->base;
-			max->base = temp_dword;
-			max->length -= split_node->length;
-
-			/* Put it next in the list */
-			split_node->next = max->next;
-			max->next = split_node;
-		}
-
-		if ((max->base + max->length) & (size - 1)) {
-			/* this one isn't end aligned properly at the top
-			   so we'll make a new entry and split it up */
-			split_node = kmalloc(sizeof(struct pci_resource),
-						GFP_KERNEL);
-
-			if (!split_node)
-				return NULL;
-			temp_dword = ((max->base + max->length) & ~(size - 1));
-			split_node->base = temp_dword;
-			split_node->length = max->length + max->base
-					     - split_node->base;
-			max->length -= split_node->length;
-
-			/* Put it in the list */
-			split_node->next = max->next;
-			max->next = split_node;
-		}
-
-		/* Make sure it didn't shrink too much when we aligned it */
-		if (max->length < size)
-			continue;
-
-		for ( i = 0; max_size[i] > size; i++) {
-			if (max->length > max_size[i]) {
-				split_node = kmalloc(sizeof(struct pci_resource),
-							GFP_KERNEL);
-				if (!split_node)
-					break;	/* return NULL; */
-				split_node->base = max->base + max_size[i];
-				split_node->length = max->length - max_size[i];
-				max->length = max_size[i];
-				/* Put it next in the list */
-				split_node->next = max->next;
-				max->next = split_node;
-				break;
-			}
-		}
-
-		/* Now take it out of the list */
-		temp = (struct pci_resource*) *head;
-		if (temp == max) {
-			*head = max->next;
-		} else {
-			while (temp && temp->next != max) {
-				temp = temp->next;
-			}
-
-			temp->next = max->next;
-		}
-
-		max->next = NULL;
-		return max;
-	}
-
-	/* If we get here, we couldn't find one */
-	return NULL;
-}
-
-
-/*
- * get_resource
- *
- * this function sorts the resource list by size and then
- * returns the first node of "size" length.  If it finds a node
- * larger than "size" it will split it up.
- *
- * size must be a power of two.
- */
-static struct pci_resource *get_resource(struct pci_resource **head, u32 size)
-{
-	struct pci_resource *prevnode;
-	struct pci_resource *node;
-	struct pci_resource *split_node;
-	u32 temp_dword;
-
-	if (!(*head))
-		return NULL;
-
-	if ( pciehp_resource_sort_and_combine(head) )
-		return NULL;
-
-	if ( sort_by_size(head) )
-		return NULL;
-
-	for (node = *head; node; node = node->next) {
-		dbg("%s: req_size =0x%x node=%p, base=0x%x, length=0x%x\n",
-		    __FUNCTION__, size, node, node->base, node->length);
-		if (node->length < size)
-			continue;
-
-		if (node->base & (size - 1)) {
-			dbg("%s: not aligned\n", __FUNCTION__);
-			/* this one isn't base aligned properly
-			   so we'll make a new entry and split it up */
-			temp_dword = (node->base | (size-1)) + 1;
-
-			/* Short circuit if adjusted size is too small */
-			if ((node->length - (temp_dword - node->base)) < size)
-				continue;
-
-			split_node = kmalloc(sizeof(struct pci_resource),
-						GFP_KERNEL);
-
-			if (!split_node)
-				return NULL;
-
-			split_node->base = node->base;
-			split_node->length = temp_dword - node->base;
-			node->base = temp_dword;
-			node->length -= split_node->length;
-
-			/* Put it in the list */
-			split_node->next = node->next;
-			node->next = split_node;
-		} /* End of non-aligned base */
-
-		/* Don't need to check if too small since we already did */
-		if (node->length > size) {
-			dbg("%s: too big\n", __FUNCTION__);
-			/* this one is longer than we need
-			   so we'll make a new entry and split it up */
-			split_node = kmalloc(sizeof(struct pci_resource),
-						GFP_KERNEL);
-
-			if (!split_node)
-				return NULL;
-
-			split_node->base = node->base + size;
-			split_node->length = node->length - size;
-			node->length = size;
-
-			/* Put it in the list */
-			split_node->next = node->next;
-			node->next = split_node;
-		}  /* End of too big on top end */
-
-		dbg("%s: got one!!!\n", __FUNCTION__);
-		/* If we got here, then it is the right size
-		   Now take it out of the list */
-		if (*head == node) {
-			*head = node->next;
-		} else {
-			prevnode = *head;
-			while (prevnode->next != node)
-				prevnode = prevnode->next;
-
-			prevnode->next = node->next;
-		}
-		node->next = NULL;
-		/* Stop looping */
-		break;
-	}
-	return node;
-}
-
-
-/*
- * pciehp_resource_sort_and_combine
- *
- * Sorts all of the nodes in the list in ascending order by
- * their base addresses.  Also does garbage collection by
- * combining adjacent nodes.
- *
- * returns 0 if success
- */
-int pciehp_resource_sort_and_combine(struct pci_resource **head)
-{
-	struct pci_resource *node1;
-	struct pci_resource *node2;
-	int out_of_order = 1;
-
-	dbg("%s: head = %p, *head = %p\n", __FUNCTION__, head, *head);
-
-	if (!(*head))
-		return 1;
-
-	dbg("*head->next = %p\n",(*head)->next);
-
-	if (!(*head)->next)
-		return 0;	/* only one item on the list, already sorted! */
-
-	dbg("*head->base = 0x%x\n",(*head)->base);
-	dbg("*head->next->base = 0x%x\n",(*head)->next->base);
-	while (out_of_order) {
-		out_of_order = 0;
-
-		/* Special case for swapping list head */
-		if (((*head)->next) &&
-		    ((*head)->base > (*head)->next->base)) {
-			node1 = *head;
-			(*head) = (*head)->next;
-			node1->next = (*head)->next;
-			(*head)->next = node1;
-			out_of_order++;
-		}
-
-		node1 = (*head);
-
-		while (node1->next && node1->next->next) {
-			if (node1->next->base > node1->next->next->base) {
-				out_of_order++;
-				node2 = node1->next;
-				node1->next = node1->next->next;
-				node1 = node1->next;
-				node2->next = node1->next;
-				node1->next = node2;
-			} else
-				node1 = node1->next;
-		}
-	}  /* End of out_of_order loop */
-
-	node1 = *head;
-
-	while (node1 && node1->next) {
-		if ((node1->base + node1->length) == node1->next->base) {
-			/* Combine */
-			dbg("8..\n");
-			node1->length += node1->next->length;
-			node2 = node1->next;
-			node1->next = node1->next->next;
-			kfree(node2);
-		} else
-			node1 = node1->next;
-	}
-
-	return 0;
-}
-
-
 /**
  * pciehp_slot_create - Creates a node and adds it to the proper bus.
  * @busnumber - bus where new node is to be located
@@ -926,7 +301,6 @@ static int slot_remove(struct pci_func * old_slot)
 
 	if (next == old_slot) {
 		pciehp_slot_list[old_slot->bus] = old_slot->next;
-		pciehp_destroy_board_resources(old_slot);
 		kfree(old_slot);
 		return 0;
 	}
@@ -937,7 +311,6 @@ static int slot_remove(struct pci_func * old_slot)
 
 	if (next->next == old_slot) {
 		next->next = old_slot->next;
-		pciehp_destroy_board_resources(old_slot);
 		kfree(old_slot);
 		return 0;
 	} else
@@ -1103,12 +476,9 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
 static u32 board_added(struct pci_func * func, struct controller * ctrl)
 {
 	u8 hp_slot;
-	int index;
 	u32 temp_register = 0xFFFFFFFF;
 	u32 rc = 0;
-	struct pci_func *new_func = NULL;
 	struct slot *p_slot;
-	struct resource_lists res_lists;
 
 	p_slot = pciehp_find_slot(ctrl, func->device);
 	hp_slot = func->device - ctrl->slot_device_offset;
@@ -1162,89 +532,43 @@ static u32 board_added(struct pci_func * func, struct controller * ctrl)
 		dbg("%s: temp register set to %x by power fault\n", __FUNCTION__, temp_register);
 		rc = POWER_FAILURE;
 		func->status = 0;
-	} else {
-		/* Get vendor/device ID u32 */
-		rc = pci_bus_read_config_dword (ctrl->pci_dev->subordinate, PCI_DEVFN(func->device, func->function), 
-			PCI_VENDOR_ID, &temp_register);
-		dbg("%s: pci_bus_read_config_dword returns %d\n", __FUNCTION__, rc);
-		dbg("%s: temp_register is %x\n", __FUNCTION__, temp_register);
-
-		if (rc != 0) {
-			/* Something's wrong here */
-			temp_register = 0xFFFFFFFF;
-			dbg("%s: temp register set to %x by error\n", __FUNCTION__, temp_register);
-		}
-		/* Preset return code.  It will be changed later if things go okay. */
-		rc = NO_ADAPTER_PRESENT;
+		goto err_exit;
 	}
 
-	/* All F's is an empty slot or an invalid board */
-	if (temp_register != 0xFFFFFFFF) {	  /* Check for a board in the slot */
-		res_lists.io_head = ctrl->io_head;
-		res_lists.mem_head = ctrl->mem_head;
-		res_lists.p_mem_head = ctrl->p_mem_head;
-		res_lists.bus_head = ctrl->bus_head;
-		res_lists.irqs = NULL;
-
-		rc = configure_new_device(ctrl, func, 0, &res_lists, 0, 0);
-		dbg("%s: back from configure_new_device\n", __FUNCTION__);
-
-		ctrl->io_head = res_lists.io_head;
-		ctrl->mem_head = res_lists.mem_head;
-		ctrl->p_mem_head = res_lists.p_mem_head;
-		ctrl->bus_head = res_lists.bus_head;
-
-		pciehp_resource_sort_and_combine(&(ctrl->mem_head));
-		pciehp_resource_sort_and_combine(&(ctrl->p_mem_head));
-		pciehp_resource_sort_and_combine(&(ctrl->io_head));
-		pciehp_resource_sort_and_combine(&(ctrl->bus_head));
+	rc = pciehp_configure_device(p_slot);
+	if (rc) {
+		err("Cannot add device 0x%x:%x\n", p_slot->bus,
+				p_slot->device);
+		goto err_exit;
+	}
 
-		if (rc) {
-			set_slot_off(ctrl, p_slot);
-			return rc;
-		}
-		pciehp_save_slot_config(ctrl, func);
+	pciehp_save_slot_config(ctrl, func);
+	func->status = 0;
+	func->switch_save = 0x10;
+	func->is_a_board = 0x01;
 
-		func->status = 0;
-		func->switch_save = 0x10;
-		func->is_a_board = 0x01;
+	/*
+	 * Some PCI Express root ports require fixup after hot-plug operation.
+	 */
+	if (pcie_mch_quirk)
+		pci_fixup_device(pci_fixup_final, ctrl->pci_dev);
+	if (PWR_LED(ctrl->ctrlcap)) {
+		/* Wait for exclusive access to hardware */
+  		down(&ctrl->crit_sect);
 
-		/* next, we will instantiate the linux pci_dev structures 
-		 * (with appropriate driver notification, if already present) 
-		 */
-		index = 0;
-		do {
-			new_func = pciehp_slot_find(ctrl->slot_bus, func->device, index++);
-			if (new_func && !new_func->pci_dev) {
-				dbg("%s:call pci_hp_configure_dev, func %x\n", 
-					__FUNCTION__, index);
-				pciehp_configure_device(ctrl, new_func);
-			}
-		} while (new_func);
-
- 		/* 
- 		 * Some PCI Express root ports require fixup after hot-plug operation.
- 		 */
- 		if (pcie_mch_quirk)
- 			pci_fixup_device(pci_fixup_final, ctrl->pci_dev);
- 
-  		if (PWR_LED(ctrl->ctrlcap)) {
-  			/* Wait for exclusive access to hardware */
-  			down(&ctrl->crit_sect);
-   
-  			p_slot->hpc_ops->green_led_on(p_slot);
+  		p_slot->hpc_ops->green_led_on(p_slot);
   
-  			/* Wait for the command to complete */
-  			wait_for_ctrl_irq (ctrl);
+  		/* Wait for the command to complete */
+  		wait_for_ctrl_irq (ctrl);
   	
-  			/* Done with exclusive hardware access */
-  			up(&ctrl->crit_sect);
-  		}
-	} else {
-		set_slot_off(ctrl, p_slot);
-		return -1;
-	}
+  		/* Done with exclusive hardware access */
+  		up(&ctrl->crit_sect);
+  	}
 	return 0;
+
+err_exit:
+	set_slot_off(ctrl, p_slot);
+	return -1;
 }
 
 
@@ -1254,13 +578,9 @@ static u32 board_added(struct pci_func * func, struct controller * ctrl)
  */
 static u32 remove_board(struct pci_func *func, struct controller *ctrl)
 {
-	int index;
-	u8 skip = 0;
 	u8 device;
 	u8 hp_slot;
 	u32 rc;
-	struct resource_lists res_lists;
-	struct pci_func *temp_func;
 	struct slot *p_slot;
 
 	if (func == NULL)
@@ -1276,27 +596,6 @@ static u32 remove_board(struct pci_func *func, struct controller *ctrl)
 
 	dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
 
-	if ((ctrl->add_support) &&
-		!(func->bus_head || func->mem_head || func->p_mem_head || func->io_head)) {
-		/* Here we check to see if we've saved any of the board's
-		 * resources already.  If so, we'll skip the attempt to
-		 * determine what's being used.
-		 */
-		index = 0;
-
-		temp_func = func;
-
-		while ((temp_func = pciehp_slot_find(temp_func->bus, temp_func->device, index++))) {
-			if (temp_func->bus_head || temp_func->mem_head
-			    || temp_func->p_mem_head || temp_func->io_head) {
-				skip = 1;
-				break;
-			}
-		}
-
-		if (!skip)
-			rc = pciehp_save_used_resources(ctrl, func, DISABLE_CARD);
-	}
 	/* Change status to shutdown */
 	if (func->is_a_board)
 		func->status = 0x01;
@@ -1330,26 +629,6 @@ static u32 remove_board(struct pci_func *func, struct controller *ctrl)
 
 	if (ctrl->add_support) {
 		while (func) {
-			res_lists.io_head = ctrl->io_head;
-			res_lists.mem_head = ctrl->mem_head;
-			res_lists.p_mem_head = ctrl->p_mem_head;
-			res_lists.bus_head = ctrl->bus_head;
-
-			dbg("Returning resources to ctlr lists for (B/D/F) = (%#x/%#x/%#x)\n", 
-				func->bus, func->device, func->function);
-
-			pciehp_return_board_resources(func, &res_lists);
-
-			ctrl->io_head = res_lists.io_head;
-			ctrl->mem_head = res_lists.mem_head;
-			ctrl->p_mem_head = res_lists.p_mem_head;
-			ctrl->bus_head = res_lists.bus_head;
-
-			pciehp_resource_sort_and_combine(&(ctrl->mem_head));
-			pciehp_resource_sort_and_combine(&(ctrl->p_mem_head));
-			pciehp_resource_sort_and_combine(&(ctrl->io_head));
-			pciehp_resource_sort_and_combine(&(ctrl->bus_head));
-
 			if (is_bridge(func)) {
 				dbg("PCI Bridge Hot-Remove s:b:d:f(%02x:%02x:%02x:%02x)\n", 
 					ctrl->seg, func->bus, func->device, func->function);
@@ -1918,787 +1197,3 @@ int pciehp_disable_slot(struct slot *p_slot)
 	return rc;
 }
 
-
-/**
- * configure_new_device - Configures the PCI header information of one board.
- *
- * @ctrl: pointer to controller structure
- * @func: pointer to function structure
- * @behind_bridge: 1 if this is a recursive call, 0 if not
- * @resources: pointer to set of resource lists
- *
- * Returns 0 if success
- *
- */
-static u32 configure_new_device(struct controller * ctrl, struct pci_func * func,
-	u8 behind_bridge, struct resource_lists * resources, u8 bridge_bus, u8 bridge_dev)
-{
-	u8 temp_byte, function, max_functions, stop_it;
-	int rc;
-	u32 ID;
-	struct pci_func *new_slot;
-	struct pci_bus lpci_bus, *pci_bus;
-	int index;
-
-	new_slot = func;
-
-	dbg("%s\n", __FUNCTION__);
-	memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus));
-	pci_bus = &lpci_bus;
-	pci_bus->number = func->bus;
-
-	/* Check for Multi-function device */
-	rc = pci_bus_read_config_byte(pci_bus, PCI_DEVFN(func->device, func->function), 0x0E, &temp_byte);
-	if (rc) {
-		dbg("%s: rc = %d\n", __FUNCTION__, rc);
-		return rc;
-	}
-
-	if (temp_byte & 0x80)	/* Multi-function device */
-		max_functions = 8;
-	else
-		max_functions = 1;
-
-	function = 0;
-
-	do {
-		rc = configure_new_function(ctrl, new_slot, behind_bridge,
-					resources, bridge_bus, bridge_dev);
-
-		if (rc) {
-			dbg("configure_new_function failed: %d\n", rc);
-			index = 0;
-
-			while (new_slot) {
-				new_slot = pciehp_slot_find(new_slot->bus,
-						new_slot->device, index++);
-
-				if (new_slot)
-					pciehp_return_board_resources(new_slot,
-						resources);
-			}
-
-			return rc;
-		}
-
-		function++;
-
-		stop_it = 0;
-
-		/*  The following loop skips to the next present function
-		 *  and creates a board structure
-		 */
-
-		while ((function < max_functions) && (!stop_it)) {
-			pci_bus_read_config_dword(pci_bus, PCI_DEVFN(func->device, function), 0x00, &ID);
-
-			if (ID == 0xFFFFFFFF) {	  /* There's nothing there. */
-				function++;
-			} else {  /* There's something there */
-				/* Setup slot structure. */
-				new_slot = pciehp_slot_create(func->bus);
-
-				if (new_slot == NULL) {
-					/* Out of memory */
-					return 1;
-				}
-
-				new_slot->bus = func->bus;
-				new_slot->device = func->device;
-				new_slot->function = function;
-				new_slot->is_a_board = 1;
-				new_slot->status = 0;
-
-				stop_it++;
-			}
-		}
-
-	} while (function < max_functions);
-	dbg("returning from %s\n", __FUNCTION__);
-
-	return 0;
-}
-
-/*
- * Configuration logic that involves the hotplug data structures and 
- * their bookkeeping
- */
-
-/**
- * configure_bridge: fill bridge's registers, either configure or disable it.
- */
-static int
-configure_bridge(struct pci_bus *pci_bus, unsigned int devfn,
-			struct pci_resource *mem_node,
-			struct pci_resource **hold_mem_node,
-			int base_addr, int limit_addr)
-{
-	u16 temp_word;
-	u32 rc;
-
-	if (mem_node) {
-		memcpy(*hold_mem_node, mem_node, sizeof(struct pci_resource));
-		mem_node->next = NULL;
-
-		/* set Mem base and Limit registers */
-		RES_CHECK(mem_node->base, 16);
-		temp_word = (u16)(mem_node->base >> 16);
-		rc = pci_bus_write_config_word(pci_bus, devfn, base_addr, temp_word);
-
-		RES_CHECK(mem_node->base + mem_node->length - 1, 16);
-		temp_word = (u16)((mem_node->base + mem_node->length - 1) >> 16);
-		rc = pci_bus_write_config_word(pci_bus, devfn, limit_addr, temp_word);
-	} else {
-		temp_word = 0xFFFF;
-		rc = pci_bus_write_config_word(pci_bus, devfn, base_addr, temp_word);
-
-		temp_word = 0x0000;
-		rc = pci_bus_write_config_word(pci_bus, devfn, limit_addr, temp_word);
-
-		kfree(*hold_mem_node);
-		*hold_mem_node = NULL;
-	}
-	return rc;
-}
-
-static int
-configure_new_bridge(struct controller *ctrl, struct pci_func *func,
-		u8 behind_bridge, struct resource_lists *resources,
-		struct pci_bus *pci_bus)
-{
-	int cloop;
-	u8 temp_byte;
-	u8 device;
-	u16 temp_word;
-	u32 rc;
-	u32 ID;
-	unsigned int devfn;
-	struct pci_resource *mem_node;
-	struct pci_resource *p_mem_node;
-	struct pci_resource *io_node;
-	struct pci_resource *bus_node;
-	struct pci_resource *hold_mem_node;
-	struct pci_resource *hold_p_mem_node;
-	struct pci_resource *hold_IO_node;
-	struct pci_resource *hold_bus_node;
-	struct irq_mapping irqs;
-	struct pci_func *new_slot;
-	struct resource_lists temp_resources;
-
-	devfn = PCI_DEVFN(func->device, func->function);
-
-	/* set Primary bus */
-	dbg("set Primary bus = 0x%x\n", func->bus);
-	rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_PRIMARY_BUS, func->bus);
-	if (rc)
-		return rc;
-
-	/* find range of busses to use */
-	bus_node = get_max_resource(&resources->bus_head, 1L);
-
-	/* If we don't have any busses to allocate, we can't continue */
-	if (!bus_node) {
-		err("Got NO bus resource to use\n");
-		return -ENOMEM;
-	}
-	dbg("Got ranges of buses to use: base:len=0x%x:%x\n", bus_node->base, bus_node->length);
-
-	/* set Secondary bus */
-	temp_byte = (u8)bus_node->base;
-	dbg("set Secondary bus = 0x%x\n", temp_byte);
-	rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, temp_byte);
-	if (rc)
-		return rc;
-
-	/* set subordinate bus */
-	temp_byte = (u8)(bus_node->base + bus_node->length - 1);
-	dbg("set subordinate bus = 0x%x\n", temp_byte);
-	rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
-	if (rc)
-		return rc;
-
-	/* Set HP parameters (Cache Line Size, Latency Timer) */
-	rc = pciehprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_BRIDGE);
-	if (rc)
-		return rc;
-
-	/* Setup the IO, memory, and prefetchable windows */
-
-	io_node = get_max_resource(&(resources->io_head), 0x1000L);
-	if (io_node) {
-		dbg("io_node(base, len, next) (%x, %x, %p)\n", io_node->base,
-				io_node->length, io_node->next);
-	}
-
-	mem_node = get_max_resource(&(resources->mem_head), 0x100000L);
-	if (mem_node) {
-		dbg("mem_node(base, len, next) (%x, %x, %p)\n", mem_node->base,
-				mem_node->length, mem_node->next);
-	}
-
-	if (resources->p_mem_head)
-		p_mem_node = get_max_resource(&(resources->p_mem_head), 0x100000L);
-	else {
-		/*
-		 * In some platform implementation, MEM and PMEM are not
-		 *  distinguished, and hence ACPI _CRS has only MEM entries
-		 *  for both MEM and PMEM.
-		 */
-		dbg("using MEM for PMEM\n");
-		p_mem_node = get_max_resource(&(resources->mem_head), 0x100000L);
-	}
-	if (p_mem_node) {
-		dbg("p_mem_node(base, len, next) (%x, %x, %p)\n", p_mem_node->base,
-				p_mem_node->length, p_mem_node->next);
-	}
-
-	/* set up the IRQ info */
-	if (!resources->irqs) {
-		irqs.barber_pole = 0;
-		irqs.interrupt[0] = 0;
-		irqs.interrupt[1] = 0;
-		irqs.interrupt[2] = 0;
-		irqs.interrupt[3] = 0;
-		irqs.valid_INT = 0;
-	} else {
-		irqs.barber_pole = resources->irqs->barber_pole;
-		irqs.interrupt[0] = resources->irqs->interrupt[0];
-		irqs.interrupt[1] = resources->irqs->interrupt[1];
-		irqs.interrupt[2] = resources->irqs->interrupt[2];
-		irqs.interrupt[3] = resources->irqs->interrupt[3];
-		irqs.valid_INT = resources->irqs->valid_INT;
-	}
-
-	/* set up resource lists that are now aligned on top and bottom
-	 * for anything behind the bridge.
-	 */
-	temp_resources.bus_head = bus_node;
-	temp_resources.io_head = io_node;
-	temp_resources.mem_head = mem_node;
-	temp_resources.p_mem_head = p_mem_node;
-	temp_resources.irqs = &irqs;
-
-	/* Make copies of the nodes we are going to pass down so that
-	 * if there is a problem,we can just use these to free resources
-	 */
-	hold_bus_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
-	hold_IO_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
-	hold_mem_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
-	hold_p_mem_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
-
-	if (!hold_bus_node || !hold_IO_node || !hold_mem_node || !hold_p_mem_node) {
-		kfree(hold_bus_node);
-		kfree(hold_IO_node);
-		kfree(hold_mem_node);
-		kfree(hold_p_mem_node);
-
-		return 1;
-	}
-
-	memcpy(hold_bus_node, bus_node, sizeof(struct pci_resource));
-
-	bus_node->base += 1;
-	bus_node->length -= 1;
-	bus_node->next = NULL;
-
-	/* If we have IO resources copy them and fill in the bridge's
-	 * IO range registers
-	 */
-	if (io_node) {
-		memcpy(hold_IO_node, io_node, sizeof(struct pci_resource));
-		io_node->next = NULL;
-
-		/* set IO base and Limit registers */
-		RES_CHECK(io_node->base, 8);
-		temp_byte = (u8)(io_node->base >> 8);
-		rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_BASE, temp_byte);
-
-		RES_CHECK(io_node->base + io_node->length - 1, 8);
-		temp_byte = (u8)((io_node->base + io_node->length - 1) >> 8);
-		rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
-	} else {
-		kfree(hold_IO_node);
-		hold_IO_node = NULL;
-	}
-
-	/* If we have memory resources copy them and fill in the bridge's
-	 * memory range registers.  Otherwise, fill in the range
-	 * registers with values that disable them.
-	 */
-	rc = configure_bridge(pci_bus, devfn, mem_node, &hold_mem_node,
-				PCI_MEMORY_BASE, PCI_MEMORY_LIMIT);
-
-	/* If we have prefetchable memory resources copy them and 
-	 * fill in the bridge's memory range registers.  Otherwise,
-	 * fill in the range registers with values that disable them.
-	 */
-	rc = configure_bridge(pci_bus, devfn, p_mem_node, &hold_p_mem_node,
-				PCI_PREF_MEMORY_BASE, PCI_PREF_MEMORY_LIMIT);
-
-	/* Adjust this to compensate for extra adjustment in first loop */
-	irqs.barber_pole--;
-
-	rc = 0;
-
-	/* Here we actually find the devices and configure them */
-	for (device = 0; (device <= 0x1F) && !rc; device++) {
-		irqs.barber_pole = (irqs.barber_pole + 1) & 0x03;
-
-		ID = 0xFFFFFFFF;
-		pci_bus->number = hold_bus_node->base;
-		pci_bus_read_config_dword (pci_bus, PCI_DEVFN(device, 0), PCI_VENDOR_ID, &ID);
-		pci_bus->number = func->bus;
-
-		if (ID != 0xFFFFFFFF) {	  /*  device Present */
-			/* Setup slot structure. */
-			new_slot = pciehp_slot_create(hold_bus_node->base);
-
-			if (new_slot == NULL) {
-				/* Out of memory */
-				rc = -ENOMEM;
-				continue;
-			}
-
-			new_slot->bus = hold_bus_node->base;
-			new_slot->device = device;
-			new_slot->function = 0;
-			new_slot->is_a_board = 1;
-			new_slot->status = 0;
-
-			rc = configure_new_device(ctrl, new_slot, 1,
-					&temp_resources, func->bus,
-					func->device);
-			dbg("configure_new_device rc=0x%x\n",rc);
-		}	/* End of IF (device in slot?) */
-	}		/* End of FOR loop */
-
-	if (rc) {
-		pciehp_destroy_resource_list(&temp_resources);
-
-		return_resource(&(resources->bus_head), hold_bus_node);
-		return_resource(&(resources->io_head), hold_IO_node);
-		return_resource(&(resources->mem_head), hold_mem_node);
-		return_resource(&(resources->p_mem_head), hold_p_mem_node);
-		return(rc);
-	}
-
-	/* save the interrupt routing information */
-	if (resources->irqs) {
-		resources->irqs->interrupt[0] = irqs.interrupt[0];
-		resources->irqs->interrupt[1] = irqs.interrupt[1];
-		resources->irqs->interrupt[2] = irqs.interrupt[2];
-		resources->irqs->interrupt[3] = irqs.interrupt[3];
-		resources->irqs->valid_INT = irqs.valid_INT;
-	} else if (!behind_bridge) {
-		/* We need to hook up the interrupts here */
-		for (cloop = 0; cloop < 4; cloop++) {
-			if (irqs.valid_INT & (0x01 << cloop)) {
-				rc = pciehp_set_irq(func->bus, func->device,
-							0x0A + cloop, irqs.interrupt[cloop]);
-				if (rc) {
-					pciehp_destroy_resource_list (&temp_resources);
-					return_resource(&(resources->bus_head), hold_bus_node);
-					return_resource(&(resources->io_head), hold_IO_node);
-					return_resource(&(resources->mem_head), hold_mem_node);
-					return_resource(&(resources->p_mem_head), hold_p_mem_node);
-					return rc;
-				}
-			}
-		}	/* end of for loop */
-	}
-
-	/* Return unused bus resources
-	 * First use the temporary node to store information for the board
-	 */
-	if (hold_bus_node && bus_node && temp_resources.bus_head) {
-		hold_bus_node->length = bus_node->base - hold_bus_node->base;
-
-		hold_bus_node->next = func->bus_head;
-		func->bus_head = hold_bus_node;
-
-		temp_byte = (u8)(temp_resources.bus_head->base - 1);
-
-		/* set subordinate bus */
-		dbg("re-set subordinate bus = 0x%x\n", temp_byte);
-		rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
-
-		if (temp_resources.bus_head->length == 0) {
-			kfree(temp_resources.bus_head);
-			temp_resources.bus_head = NULL;
-		} else {
-			dbg("return bus res of b:d(0x%x:%x) base:len(0x%x:%x)\n",
-				func->bus, func->device, temp_resources.bus_head->base, temp_resources.bus_head->length);
-			return_resource(&(resources->bus_head), temp_resources.bus_head);
-		}
-	}
-
-	/* If we have IO space available and there is some left,
-	 * return the unused portion
-	 */
-	if (hold_IO_node && temp_resources.io_head) {
-		io_node = do_pre_bridge_resource_split(&(temp_resources.io_head),
-							&hold_IO_node, 0x1000);
-
-		/* Check if we were able to split something off */
-		if (io_node) {
-			hold_IO_node->base = io_node->base + io_node->length;
-
-			RES_CHECK(hold_IO_node->base, 8);
-			temp_byte = (u8)((hold_IO_node->base) >> 8);
-			rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_BASE, temp_byte);
-
-			return_resource(&(resources->io_head), io_node);
-		}
-
-		io_node = do_bridge_resource_split(&(temp_resources.io_head), 0x1000);
-
-		/*  Check if we were able to split something off */
-		if (io_node) {
-			/* First use the temporary node to store information for the board */
-			hold_IO_node->length = io_node->base - hold_IO_node->base;
-
-			/* If we used any, add it to the board's list */
-			if (hold_IO_node->length) {
-				hold_IO_node->next = func->io_head;
-				func->io_head = hold_IO_node;
-
-				RES_CHECK(io_node->base - 1, 8);
-				temp_byte = (u8)((io_node->base - 1) >> 8);
-				rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
-
-				return_resource(&(resources->io_head), io_node);
-			} else {
-				/* it doesn't need any IO */
-				temp_byte = 0x00;
-				rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
-
-				return_resource(&(resources->io_head), io_node);
-				kfree(hold_IO_node);
-			}
-		} else {
-			/* it used most of the range */
-			hold_IO_node->next = func->io_head;
-			func->io_head = hold_IO_node;
-		}
-	} else if (hold_IO_node) {
-		/* it used the whole range */
-		hold_IO_node->next = func->io_head;
-		func->io_head = hold_IO_node;
-	}
-
-	/* If we have memory space available and there is some left,
-	 * return the unused portion
-	 */
-	if (hold_mem_node && temp_resources.mem_head) {
-		mem_node = do_pre_bridge_resource_split(&(temp_resources.mem_head), &hold_mem_node, 0x100000L);
-
-		/* Check if we were able to split something off */
-		if (mem_node) {
-			hold_mem_node->base = mem_node->base + mem_node->length;
-
-			RES_CHECK(hold_mem_node->base, 16);
-			temp_word = (u16)((hold_mem_node->base) >> 16);
-			rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
-
-			return_resource(&(resources->mem_head), mem_node);
-		}
-
-		mem_node = do_bridge_resource_split(&(temp_resources.mem_head), 0x100000L);
-
-		/* Check if we were able to split something off */
-		if (mem_node) {
-			/* First use the temporary node to store information for the board */
-			hold_mem_node->length = mem_node->base - hold_mem_node->base;
-
-			if (hold_mem_node->length) {
-				hold_mem_node->next = func->mem_head;
-				func->mem_head = hold_mem_node;
-
-				/* configure end address */
-				RES_CHECK(mem_node->base - 1, 16);
-				temp_word = (u16)((mem_node->base - 1) >> 16);
-				rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
-
-				/* Return unused resources to the pool */
-				return_resource(&(resources->mem_head), mem_node);
-			} else {
-				/* it doesn't need any Mem */
-				temp_word = 0x0000;
-				rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
-
-				return_resource(&(resources->mem_head), mem_node);
-				kfree(hold_mem_node);
-			}
-		} else {
-			/* it used most of the range */
-			hold_mem_node->next = func->mem_head;
-			func->mem_head = hold_mem_node;
-		}
-	} else if (hold_mem_node) {
-		/* it used the whole range */
-		hold_mem_node->next = func->mem_head;
-		func->mem_head = hold_mem_node;
-	}
-
-	/* If we have prefetchable memory space available and there is some 
-	 * left at the end, return the unused portion
-	 */
-	if (hold_p_mem_node && temp_resources.p_mem_head) {
-		p_mem_node = do_pre_bridge_resource_split(&(temp_resources.p_mem_head),
-								&hold_p_mem_node, 0x100000L);
-
-		/* Check if we were able to split something off */
-		if (p_mem_node) {
-			hold_p_mem_node->base = p_mem_node->base + p_mem_node->length;
-
-			RES_CHECK(hold_p_mem_node->base, 16);
-			temp_word = (u16)((hold_p_mem_node->base) >> 16);
-			rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
-
-			return_resource(&(resources->p_mem_head), p_mem_node);
-		}
-
-		p_mem_node = do_bridge_resource_split(&(temp_resources.p_mem_head), 0x100000L);
-
-		/* Check if we were able to split something off */
-		if (p_mem_node) {
-			/* First use the temporary node to store information for the board */
-			hold_p_mem_node->length = p_mem_node->base - hold_p_mem_node->base;
-
-			/* If we used any, add it to the board's list */
-			if (hold_p_mem_node->length) {
-				hold_p_mem_node->next = func->p_mem_head;
-				func->p_mem_head = hold_p_mem_node;
-
-				RES_CHECK(p_mem_node->base - 1, 16);
-				temp_word = (u16)((p_mem_node->base - 1) >> 16);
-				rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
-
-				return_resource(&(resources->p_mem_head), p_mem_node);
-			} else {
-				/* it doesn't need any PMem */
-				temp_word = 0x0000;
-				rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
-
-				return_resource(&(resources->p_mem_head), p_mem_node);
-				kfree(hold_p_mem_node);
-			}
-		} else {
-			/* it used the most of the range */
-			hold_p_mem_node->next = func->p_mem_head;
-			func->p_mem_head = hold_p_mem_node;
-		}
-	} else if (hold_p_mem_node) {
-		/* it used the whole range */
-		hold_p_mem_node->next = func->p_mem_head;
-		func->p_mem_head = hold_p_mem_node;
-	}
-
-	/* We should be configuring an IRQ and the bridge's base address
-	 * registers if it needs them.  Although we have never seen such
-	 * a device
-	 */
-
-	pciehprm_enable_card(ctrl, func, PCI_HEADER_TYPE_BRIDGE);
-
-	dbg("PCI Bridge Hot-Added s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, func->device, func->function);
-
-	return rc;
-}
-
-/**
- * configure_new_function - Configures the PCI header information of one device
- *
- * @ctrl: pointer to controller structure
- * @func: pointer to function structure
- * @behind_bridge: 1 if this is a recursive call, 0 if not
- * @resources: pointer to set of resource lists
- *
- * Calls itself recursively for bridged devices.
- * Returns 0 if success
- *
- */
-static int
-configure_new_function(struct controller *ctrl, struct pci_func *func,
-		u8 behind_bridge, struct resource_lists *resources,
-		u8 bridge_bus, u8 bridge_dev)
-{
-	int cloop;
-	u8 temp_byte;
-	u8 class_code;
-	u32 rc;
-	u32 temp_register;
-	u32 base;
-	unsigned int devfn;
-	struct pci_resource *mem_node;
-	struct pci_resource *io_node;
-	struct pci_bus lpci_bus, *pci_bus;
-
-	memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus));
-	pci_bus = &lpci_bus;
-	pci_bus->number = func->bus;
-	devfn = PCI_DEVFN(func->device, func->function);
-
-	/* Check for Bridge */
-	rc = pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &temp_byte);
-	if (rc)
-		return rc;
-	dbg("%s: bus %x dev %x func %x temp_byte = %x\n", __FUNCTION__,
-		func->bus, func->device, func->function, temp_byte);
-
-	if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { /* PCI-PCI Bridge */
-		rc = configure_new_bridge(ctrl, func, behind_bridge, resources,
-						pci_bus);
-
-		if (rc)
-			return rc;
-	} else if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
-		/* Standard device */
-		u64	base64;
-		rc = pci_bus_read_config_byte(pci_bus, devfn, 0x0B, &class_code);
-
-		if (class_code == PCI_BASE_CLASS_DISPLAY)
-			return DEVICE_TYPE_NOT_SUPPORTED;
-
-		/* Figure out IO and memory needs */
-		for (cloop = PCI_BASE_ADDRESS_0; cloop <= PCI_BASE_ADDRESS_5; cloop += 4) {
-			temp_register = 0xFFFFFFFF;
-
-			rc = pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register);
-			rc = pci_bus_read_config_dword(pci_bus, devfn, cloop, &temp_register);
-			dbg("Bar[%x]=0x%x on bus:dev:func(0x%x:%x:%x)\n", cloop, temp_register, 
-				func->bus, func->device, func->function);
-
-			if (!temp_register)
-				continue;
-
-			base64 = 0L;
-			if (temp_register & PCI_BASE_ADDRESS_SPACE_IO) {
-				/* Map IO */
-
-				/* set base = amount of IO space */
-				base = temp_register & 0xFFFFFFFC;
-				base = ~base + 1;
-
-				dbg("NEED IO length(0x%x)\n", base);
-				io_node = get_io_resource(&(resources->io_head),(ulong)base);
-
-				/* allocate the resource to the board */
-				if (io_node) {
-					dbg("Got IO base=0x%x(length=0x%x)\n", io_node->base, io_node->length);
-					base = (u32)io_node->base;
-					io_node->next = func->io_head;
-					func->io_head = io_node;
-				} else {
-					err("Got NO IO resource(length=0x%x)\n", base);
-					return -ENOMEM;
-				}
-			} else {	/* map MEM */
-				int prefetchable = 1;
-				struct pci_resource **res_node = &func->p_mem_head;
-				char *res_type_str = "PMEM";
-				u32	temp_register2;
-
-				if (!(temp_register & PCI_BASE_ADDRESS_MEM_PREFETCH)) {
-					prefetchable = 0;
-					res_node = &func->mem_head;
-					res_type_str++;
-				}
-
-				base = temp_register & 0xFFFFFFF0;
-				base = ~base + 1;
-
-				switch (temp_register & PCI_BASE_ADDRESS_MEM_TYPE_MASK) {
-				case PCI_BASE_ADDRESS_MEM_TYPE_32:
-					dbg("NEED 32 %s bar=0x%x(length=0x%x)\n", res_type_str, temp_register, base);
-
-					if (prefetchable && resources->p_mem_head)
-						mem_node=get_resource(&(resources->p_mem_head), (ulong)base);
-					else {
-						if (prefetchable)
-							dbg("using MEM for PMEM\n");
-						mem_node = get_resource(&(resources->mem_head), (ulong)base);
-					}
-
-					/* allocate the resource to the board */
-					if (mem_node) {
-						base = (u32)mem_node->base; 
-						mem_node->next = *res_node;
-						*res_node = mem_node;
-						dbg("Got 32 %s base=0x%x(length=0x%x)\n", res_type_str, mem_node->base, 
-							mem_node->length);
-					} else {
-						err("Got NO 32 %s resource(length=0x%x)\n", res_type_str, base);
-						return -ENOMEM;
-					}
-					break;
-				case PCI_BASE_ADDRESS_MEM_TYPE_64:
-					rc = pci_bus_read_config_dword(pci_bus, devfn, cloop+4, &temp_register2);
-					dbg("NEED 64 %s bar=0x%x:%x(length=0x%x)\n", res_type_str, temp_register2, 
-						temp_register, base);
-
-					if (prefetchable && resources->p_mem_head)
-						mem_node = get_resource(&(resources->p_mem_head), (ulong)base);
-					else {
-						if (prefetchable)
-							dbg("using MEM for PMEM\n");
-						mem_node = get_resource(&(resources->mem_head), (ulong)base);
-					}
-
-					/* allocate the resource to the board */
-					if (mem_node) {
-						base64 = mem_node->base; 
-						mem_node->next = *res_node;
-						*res_node = mem_node;
-						dbg("Got 64 %s base=0x%x:%x(length=%x)\n", res_type_str, (u32)(base64 >> 32), 
-							(u32)base64, mem_node->length);
-					} else {
-						err("Got NO 64 %s resource(length=0x%x)\n", res_type_str, base);
-						return -ENOMEM;
-					}
-					break;
-				default:
-					dbg("reserved BAR type=0x%x\n", temp_register);
-					break;
-				}
-
-			}
-
-			if (base64) {
-				rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, (u32)base64);
-				cloop += 4;
-				base64 >>= 32;
-
-				if (base64) {
-					dbg("%s: high dword of base64(0x%x) set to 0\n", __FUNCTION__, (u32)base64);
-					base64 = 0x0L;
-				}
-
-				rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, (u32)base64);
-			} else {
-				rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base);
-			}
-		}		/* End of base register loop */
-
-		/* disable ROM base Address */
-		rc = pci_bus_write_config_dword (pci_bus, devfn, PCI_ROM_ADDRESS, 0x00);
-
-		/* Set HP parameters (Cache Line Size, Latency Timer) */
-		rc = pciehprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_NORMAL);
-		if (rc)
-			return rc;
-
-		pciehprm_enable_card(ctrl, func, PCI_HEADER_TYPE_NORMAL);
-
-		dbg("PCI function Hot-Added s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, func->device, 
-			func->function);
-	}  /* End of Not-A-Bridge else */
-	else {
-		/* It's some strange type of PCI adapter (Cardbus?) */
-		return DEVICE_TYPE_NOT_SUPPORTED;
-	}
-
-	func->configured = 1;
-
-	return 0;
-}