1 files changed, 3096 insertions, 0 deletions

diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c
new file mode 100644
index 000000000000..10a5a7674a8a
--- /dev/null
+++ b/drivers/pci/hotplug/cpqphp_ctrl.c
@@ -0,0 +1,3096 @@
+/*
+ * 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.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Send feedback to <greg@kroah.com>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/wait.h>
+#include <linux/smp_lock.h>
+#include <linux/pci.h>
+#include "cpqphp.h"
+
+static u32 configure_new_device(struct controller* ctrl, struct pci_func *func,
+                        u8 behind_bridge, struct resource_lists *resources);
+static int configure_new_function(struct controller* ctrl, struct pci_func *func,
+                        u8 behind_bridge, struct resource_lists *resources);
+static void interrupt_event_handler(struct controller *ctrl);
+
+static struct semaphore event_semaphore;        /* mutex for process loop (up if something to process) */
+static struct semaphore event_exit;             /* guard ensure thread has exited before calling it quits */
+static int event_finished;
+static unsigned long pushbutton_pending;        /* = 0 */
+
+/* things needed for the long_delay function */
+static struct semaphore         delay_sem;
+static wait_queue_head_t        delay_wait;
+
+/* delay is in jiffies to wait for */
+static void long_delay(int delay)
+{
+        DECLARE_WAITQUEUE(wait, current);
+        
+        /* only allow 1 customer into the delay queue at once
+         * yes this makes some people wait even longer, but who really cares?
+         * this is for _huge_ delays to make the hardware happy as the 
+         * signals bounce around
+         */
+        down (&delay_sem);
+
+        init_waitqueue_head(&delay_wait);
+
+        add_wait_queue(&delay_wait, &wait);
+        msleep_interruptible(jiffies_to_msecs(delay));
+        remove_wait_queue(&delay_wait, &wait);
+        
+        up(&delay_sem);
+}
+
+
+/* FIXME: The following line needs to be somewhere else... */
+#define WRONG_BUS_FREQUENCY 0x07
+static u8 handle_switch_change(u8 change, struct controller * ctrl)
+{
+        int hp_slot;
+        u8 rc = 0;
+        u16 temp_word;
+        struct pci_func *func;
+        struct event_info *taskInfo;
+
+        if (!change)
+                return 0;
+
+        /* Switch Change */
+        dbg("cpqsbd:  Switch interrupt received.\n");
+
+        for (hp_slot = 0; hp_slot < 6; hp_slot++) {
+                if (change & (0x1L << hp_slot)) {
+                        /**********************************
+                         * this one changed.
+                         **********************************/
+                        func = cpqhp_slot_find(ctrl->bus,
+                                (hp_slot + ctrl->slot_device_offset), 0);
+
+                        /* this is the structure that tells the worker thread
+                         *what to do */
+                        taskInfo = &(ctrl->event_queue[ctrl->next_event]);
+                        ctrl->next_event = (ctrl->next_event + 1) % 10;
+                        taskInfo->hp_slot = hp_slot;
+
+                        rc++;
+
+                        temp_word = ctrl->ctrl_int_comp >> 16;
+                        func->presence_save = (temp_word >> hp_slot) & 0x01;
+                        func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02;
+
+                        if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) {
+                                /**********************************
+                                 * Switch opened
+                                 **********************************/
+
+                                func->switch_save = 0;
+
+                                taskInfo->event_type = INT_SWITCH_OPEN;
+                        } else {
+                                /**********************************
+                                 * Switch closed
+                                 **********************************/
+
+                                func->switch_save = 0x10;
+
+                                taskInfo->event_type = INT_SWITCH_CLOSE;
+                        }
+                }
+        }
+
+        return rc;
+}
+
+/**
+ * cpqhp_find_slot: find the struct slot of given device
+ * @ctrl: scan lots of this controller
+ * @device: the device id to find
+ */
+static struct slot *cpqhp_find_slot(struct controller *ctrl, u8 device)
+{
+        struct slot *slot = ctrl->slot;
+
+        while (slot && (slot->device != device)) {
+                slot = slot->next;
+        }
+
+        return slot;
+}
+
+
+static u8 handle_presence_change(u16 change, struct controller * ctrl)
+{
+        int hp_slot;
+        u8 rc = 0;
+        u8 temp_byte;
+        u16 temp_word;
+        struct pci_func *func;
+        struct event_info *taskInfo;
+        struct slot *p_slot;
+
+        if (!change)
+                return 0;
+
+        /**********************************
+         * Presence Change
+         **********************************/
+        dbg("cpqsbd:  Presence/Notify input change.\n");
+        dbg("         Changed bits are 0x%4.4x\n", change );
+
+        for (hp_slot = 0; hp_slot < 6; hp_slot++) {
+                if (change & (0x0101 << hp_slot)) {
+                        /**********************************
+                         * this one changed.
+                         **********************************/
+                        func = cpqhp_slot_find(ctrl->bus,
+                                (hp_slot + ctrl->slot_device_offset), 0);
+
+                        taskInfo = &(ctrl->event_queue[ctrl->next_event]);
+                        ctrl->next_event = (ctrl->next_event + 1) % 10;
+                        taskInfo->hp_slot = hp_slot;
+
+                        rc++;
+
+                        p_slot = cpqhp_find_slot(ctrl, hp_slot + (readb(ctrl->hpc_reg + SLOT_MASK) >> 4));
+                        if (!p_slot)
+                                return 0;
+
+                        /* If the switch closed, must be a button
+                         * If not in button mode, nevermind */
+                        if (func->switch_save && (ctrl->push_button == 1)) {
+                                temp_word = ctrl->ctrl_int_comp >> 16;
+                                temp_byte = (temp_word >> hp_slot) & 0x01;
+                                temp_byte |= (temp_word >> (hp_slot + 7)) & 0x02;
+
+                                if (temp_byte != func->presence_save) {
+                                        /**************************************
+                                         * button Pressed (doesn't do anything)
+                                         **************************************/
+                                        dbg("hp_slot %d button pressed\n", hp_slot);
+                                        taskInfo->event_type = INT_BUTTON_PRESS;
+                                } else {
+                                        /**********************************
+                                         * button Released - TAKE ACTION!!!!
+                                         **********************************/
+                                        dbg("hp_slot %d button released\n", hp_slot);
+                                        taskInfo->event_type = INT_BUTTON_RELEASE;
+
+                                        /* Cancel if we are still blinking */
+                                        if ((p_slot->state == BLINKINGON_STATE)
+                                            || (p_slot->state == BLINKINGOFF_STATE)) {
+                                                taskInfo->event_type = INT_BUTTON_CANCEL;
+                                                dbg("hp_slot %d button cancel\n", hp_slot);
+                                        } else if ((p_slot->state == POWERON_STATE)
+                                                   || (p_slot->state == POWEROFF_STATE)) {
+                                                /* info(msg_button_ignore, p_slot->number); */
+                                                taskInfo->event_type = INT_BUTTON_IGNORE;
+                                                dbg("hp_slot %d button ignore\n", hp_slot);
+                                        }
+                                }
+                        } else {
+                                /* Switch is open, assume a presence change
+                                 * Save the presence state */
+                                temp_word = ctrl->ctrl_int_comp >> 16;
+                                func->presence_save = (temp_word >> hp_slot) & 0x01;
+                                func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02;
+
+                                if ((!(ctrl->ctrl_int_comp & (0x010000 << hp_slot))) ||
+                                    (!(ctrl->ctrl_int_comp & (0x01000000 << hp_slot)))) {
+                                        /* Present */
+                                        taskInfo->event_type = INT_PRESENCE_ON;
+                                } else {
+                                        /* Not Present */
+                                        taskInfo->event_type = INT_PRESENCE_OFF;
+                                }
+                        }
+                }
+        }
+
+        return rc;
+}
+
+
+static u8 handle_power_fault(u8 change, struct controller * ctrl)
+{
+        int hp_slot;
+        u8 rc = 0;
+        struct pci_func *func;
+        struct event_info *taskInfo;
+
+        if (!change)
+                return 0;
+
+        /**********************************
+         * power fault
+         **********************************/
+
+        info("power fault interrupt\n");
+
+        for (hp_slot = 0; hp_slot < 6; hp_slot++) {
+                if (change & (0x01 << hp_slot)) {
+                        /**********************************
+                         * this one changed.
+                         **********************************/
+                        func = cpqhp_slot_find(ctrl->bus,
+                                (hp_slot + ctrl->slot_device_offset), 0);
+
+                        taskInfo = &(ctrl->event_queue[ctrl->next_event]);
+                        ctrl->next_event = (ctrl->next_event + 1) % 10;
+                        taskInfo->hp_slot = hp_slot;
+
+                        rc++;
+
+                        if (ctrl->ctrl_int_comp & (0x00000100 << hp_slot)) {
+                                /**********************************
+                                 * power fault Cleared
+                                 **********************************/
+                                func->status = 0x00;
+
+                                taskInfo->event_type = INT_POWER_FAULT_CLEAR;
+                        } else {
+                                /**********************************
+                                 * power fault
+                                 **********************************/
+                                taskInfo->event_type = INT_POWER_FAULT;
+
+                                if (ctrl->rev < 4) {
+                                        amber_LED_on (ctrl, hp_slot);
+                                        green_LED_off (ctrl, hp_slot);
+                                        set_SOGO (ctrl);
+
+                                        /* this is a fatal condition, we want
+                                         * to crash the machine to protect from
+                                         * data corruption. simulated_NMI
+                                         * shouldn't ever return */
+                                        /* FIXME
+                                        simulated_NMI(hp_slot, ctrl); */
+
+                                        /* The following code causes a software
+                                         * crash just in case simulated_NMI did
+                                         * return */
+                                        /*FIXME
+                                        panic(msg_power_fault); */
+                                } else {
+                                        /* set power fault status for this board */
+                                        func->status = 0xFF;
+                                        info("power fault bit %x set\n", hp_slot);
+                                }
+                        }
+                }
+        }
+
+        return rc;
+}
+
+
+/**
+ * sort_by_size: sort nodes on the list 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: sort nodes on the list by their length, largest first.
+ * @head: list to sort
+ *
+ */
+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: find node of resources that are unused
+ *
+ */
+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 = cpqhp_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(*split_node), 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: find one node of resources that aren't in use
+ *
+ */
+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;
+
+        rc = cpqhp_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)
+                goto error;
+
+        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)
+                        goto error;
+
+                node->length -= (temp_dword - node->base);
+                node->base = temp_dword;
+        }
+
+        if (node->length & (alignment - 1))
+                /* There's stuff in use after this node */
+                goto error;
+
+        return node;
+error:
+        kfree(node);
+        return NULL;
+}
+
+
+/**
+ * get_io_resource: find first node of given size not in ISA aliasing window.
+ * @head: list to search
+ * @size: size of node to find, must be a power of two.
+ *
+ * Description: this function sorts the resource list by size and then returns
+ * 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.
+ *
+ */
+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;
+        u32 temp_dword;
+
+        if (!(*head))
+                return NULL;
+
+        if ( cpqhp_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(*split_node), 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(*split_node), 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 and break */
+                if (*head == node) {
+                        *head = node->next;
+                } else {
+                        prevnode = *head;
+                        while (prevnode->next != node)
+                                prevnode = prevnode->next;
+
+                        prevnode->next = node->next;
+                }
+                node->next = NULL;
+                break;
+        }
+
+        return node;
+}
+
+
+/**
+ * get_max_resource: get largest node which has at least the given size.
+ * @head: the list to search the node in
+ * @size: the minimum size of the node to find
+ *
+ * Description: 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.
+ */
+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;
+
+        if (cpqhp_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(*split_node), 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;
+
+                        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(*split_node), 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;
+
+                        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;
+
+                /* Now take it out of the list */
+                temp = *head;
+                if (temp == max) {
+                        *head = max->next;
+                } else {
+                        while (temp && temp->next != max) {
+                                temp = temp->next;
+                        }
+
+                        temp->next = max->next;
+                }
+
+                max->next = NULL;
+                break;
+        }
+
+        return max;
+}
+
+
+/**
+ * get_resource: find resource of given size and split up larger ones.
+ * @head: the list to search for resources
+ * @size: the size limit to use
+ *
+ * Description: 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 (cpqhp_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 =%x node=%p, base=%x, length=%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(*split_node), 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;
+
+                        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(*split_node), 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;
+                break;
+        }
+        return node;
+}
+
+
+/**
+ * cpqhp_resource_sort_and_combine: sort nodes by base addresses and clean up.
+ * @head: the list to sort and clean up
+ *
+ * Description: 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 cpqhp_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;
+}
+
+
+irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data, struct pt_regs *regs)
+{
+        struct controller *ctrl = data;
+        u8 schedule_flag = 0;
+        u8 reset;
+        u16 misc;
+        u32 Diff;
+        u32 temp_dword;
+
+        
+        misc = readw(ctrl->hpc_reg + MISC);
+        /***************************************
+         * Check to see if it was our interrupt
+         ***************************************/
+        if (!(misc & 0x000C)) {
+                return IRQ_NONE;
+        }
+
+        if (misc & 0x0004) {
+                /**********************************
+                 * Serial Output interrupt Pending
+                 **********************************/
+
+                /* Clear the interrupt */
+                misc |= 0x0004;
+                writew(misc, ctrl->hpc_reg + MISC);
+
+                /* Read to clear posted writes */
+                misc = readw(ctrl->hpc_reg + MISC);
+
+                dbg ("%s - waking up\n", __FUNCTION__);
+                wake_up_interruptible(&ctrl->queue);
+        }
+
+        if (misc & 0x0008) {
+                /* General-interrupt-input interrupt Pending */
+                Diff = readl(ctrl->hpc_reg + INT_INPUT_CLEAR) ^ ctrl->ctrl_int_comp;
+
+                ctrl->ctrl_int_comp = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
+
+                /* Clear the interrupt */
+                writel(Diff, ctrl->hpc_reg + INT_INPUT_CLEAR);
+
+                /* Read it back to clear any posted writes */
+                temp_dword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
+
+                if (!Diff)
+                        /* Clear all interrupts */
+                        writel(0xFFFFFFFF, ctrl->hpc_reg + INT_INPUT_CLEAR);
+
+                schedule_flag += handle_switch_change((u8)(Diff & 0xFFL), ctrl);
+                schedule_flag += handle_presence_change((u16)((Diff & 0xFFFF0000L) >> 16), ctrl);
+                schedule_flag += handle_power_fault((u8)((Diff & 0xFF00L) >> 8), ctrl);
+        }
+
+        reset = readb(ctrl->hpc_reg + RESET_FREQ_MODE);
+        if (reset & 0x40) {
+                /* Bus reset has completed */
+                reset &= 0xCF;
+                writeb(reset, ctrl->hpc_reg + RESET_FREQ_MODE);
+                reset = readb(ctrl->hpc_reg + RESET_FREQ_MODE);
+                wake_up_interruptible(&ctrl->queue);
+        }
+
+        if (schedule_flag) {
+                up(&event_semaphore);
+                dbg("Signal event_semaphore\n");
+        }
+        return IRQ_HANDLED;
+}
+
+
+/**
+ * cpqhp_slot_create - Creates a node and adds it to the proper bus.
+ * @busnumber - bus where new node is to be located
+ *
+ * Returns pointer to the new node or NULL if unsuccessful
+ */
+struct pci_func *cpqhp_slot_create(u8 busnumber)
+{
+        struct pci_func *new_slot;
+        struct pci_func *next;
+
+        new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL);
+
+        if (new_slot == NULL) {
+                /* I'm not dead yet!
+                 * You will be. */
+                return new_slot;
+        }
+
+        memset(new_slot, 0, sizeof(struct pci_func));
+
+        new_slot->next = NULL;
+        new_slot->configured = 1;
+
+        if (cpqhp_slot_list[busnumber] == NULL) {
+                cpqhp_slot_list[busnumber] = new_slot;
+        } else {
+                next = cpqhp_slot_list[busnumber];
+                while (next->next != NULL)
+                        next = next->next;
+                next->next = new_slot;
+        }
+        return new_slot;
+}
+
+
+/**
+ * slot_remove - Removes a node from the linked list of slots.
+ * @old_slot: slot to remove
+ *
+ * Returns 0 if successful, !0 otherwise.
+ */
+static int slot_remove(struct pci_func * old_slot)
+{
+        struct pci_func *next;
+
+        if (old_slot == NULL)
+                return 1;
+
+        next = cpqhp_slot_list[old_slot->bus];
+
+        if (next == NULL) {
+                return 1;
+        }
+
+        if (next == old_slot) {
+                cpqhp_slot_list[old_slot->bus] = old_slot->next;
+                cpqhp_destroy_board_resources(old_slot);
+                kfree(old_slot);
+                return 0;
+        }
+
+        while ((next->next != old_slot) && (next->next != NULL)) {
+                next = next->next;
+        }
+
+        if (next->next == old_slot) {
+                next->next = old_slot->next;
+                cpqhp_destroy_board_resources(old_slot);
+                kfree(old_slot);
+                return 0;
+        } else
+                return 2;
+}
+
+
+/**
+ * bridge_slot_remove - Removes a node from the linked list of slots.
+ * @bridge: bridge to remove
+ *
+ * Returns 0 if successful, !0 otherwise.
+ */
+static int bridge_slot_remove(struct pci_func *bridge)
+{
+        u8 subordinateBus, secondaryBus;
+        u8 tempBus;
+        struct pci_func *next;
+
+        secondaryBus = (bridge->config_space[0x06] >> 8) & 0xFF;
+        subordinateBus = (bridge->config_space[0x06] >> 16) & 0xFF;
+
+        for (tempBus = secondaryBus; tempBus <= subordinateBus; tempBus++) {
+                next = cpqhp_slot_list[tempBus];
+
+                while (!slot_remove(next)) {
+                        next = cpqhp_slot_list[tempBus];
+                }
+        }
+
+        next = cpqhp_slot_list[bridge->bus];
+
+        if (next == NULL)
+                return 1;
+
+        if (next == bridge) {
+                cpqhp_slot_list[bridge->bus] = bridge->next;
+                goto out;
+        }
+
+        while ((next->next != bridge) && (next->next != NULL))
+                next = next->next;
+
+        if (next->next != bridge)
+                return 2;
+        next->next = bridge->next;
+out:
+        kfree(bridge);
+        return 0;
+}
+
+
+/**
+ * cpqhp_slot_find - Looks for a node by bus, and device, multiple functions accessed
+ * @bus: bus to find
+ * @device: device to find
+ * @index: is 0 for first function found, 1 for the second...
+ *
+ * Returns pointer to the node if successful, %NULL otherwise.
+ */
+struct pci_func *cpqhp_slot_find(u8 bus, u8 device, u8 index)
+{
+        int found = -1;
+        struct pci_func *func;
+
+        func = cpqhp_slot_list[bus];
+
+        if ((func == NULL) || ((func->device == device) && (index == 0)))
+                return func;
+
+        if (func->device == device)
+                found++;
+
+        while (func->next != NULL) {
+                func = func->next;
+
+                if (func->device == device)
+                        found++;
+
+                if (found == index)
+                        return func;
+        }
+
+        return NULL;
+}
+
+
+/* DJZ: I don't think is_bridge will work as is.
+ * FIXME */
+static int is_bridge(struct pci_func * func)
+{
+        /* Check the header type */
+        if (((func->config_space[0x03] >> 16) & 0xFF) == 0x01)
+                return 1;
+        else
+                return 0;
+}
+
+
+/**
+ * set_controller_speed - set the frequency and/or mode of a specific
+ * controller segment.
+ *
+ * @ctrl: controller to change frequency/mode for.
+ * @adapter_speed: the speed of the adapter we want to match.
+ * @hp_slot: the slot number where the adapter is installed.
+ *
+ * Returns 0 if we successfully change frequency and/or mode to match the
+ * adapter speed.
+ * 
+ */
+static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_slot)
+{
+        struct slot *slot;
+        u8 reg;
+        u8 slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
+        u16 reg16;
+        u32 leds = readl(ctrl->hpc_reg + LED_CONTROL);
+        
+        if (ctrl->speed == adapter_speed)
+                return 0;
+        
+        /* We don't allow freq/mode changes if we find another adapter running
+         * in another slot on this controller */
+        for(slot = ctrl->slot; slot; slot = slot->next) {
+                if (slot->device == (hp_slot + ctrl->slot_device_offset)) 
+                        continue;
+                if (!slot->hotplug_slot && !slot->hotplug_slot->info) 
+                        continue;
+                if (slot->hotplug_slot->info->adapter_status == 0) 
+                        continue;
+                /* If another adapter is running on the same segment but at a
+                 * lower speed/mode, we allow the new adapter to function at
+                 * this rate if supported */
+                if (ctrl->speed < adapter_speed) 
+                        return 0;
+
+                return 1;
+        }
+        
+        /* If the controller doesn't support freq/mode changes and the
+         * controller is running at a higher mode, we bail */
+        if ((ctrl->speed > adapter_speed) && (!ctrl->pcix_speed_capability))
+                return 1;
+        
+        /* But we allow the adapter to run at a lower rate if possible */
+        if ((ctrl->speed < adapter_speed) && (!ctrl->pcix_speed_capability))
+                return 0;
+
+        /* We try to set the max speed supported by both the adapter and
+         * controller */
+        if (ctrl->speed_capability < adapter_speed) {
+                if (ctrl->speed == ctrl->speed_capability)
+                        return 0;
+                adapter_speed = ctrl->speed_capability;
+        }
+
+        writel(0x0L, ctrl->hpc_reg + LED_CONTROL);
+        writeb(0x00, ctrl->hpc_reg + SLOT_ENABLE);
+        
+        set_SOGO(ctrl); 
+        wait_for_ctrl_irq(ctrl);
+        
+        if (adapter_speed != PCI_SPEED_133MHz_PCIX)
+                reg = 0xF5;
+        else
+                reg = 0xF4;     
+        pci_write_config_byte(ctrl->pci_dev, 0x41, reg);
+        
+        reg16 = readw(ctrl->hpc_reg + NEXT_CURR_FREQ);
+        reg16 &= ~0x000F;
+        switch(adapter_speed) {
+                case(PCI_SPEED_133MHz_PCIX): 
+                        reg = 0x75;
+                        reg16 |= 0xB; 
+                        break;
+                case(PCI_SPEED_100MHz_PCIX):
+                        reg = 0x74;
+                        reg16 |= 0xA;
+                        break;
+                case(PCI_SPEED_66MHz_PCIX):
+                        reg = 0x73;
+                        reg16 |= 0x9;
+                        break;
+                case(PCI_SPEED_66MHz):
+                        reg = 0x73;
+                        reg16 |= 0x1;
+                        break;
+                default: /* 33MHz PCI 2.2 */
+                        reg = 0x71;
+                        break;
+                        
+        }
+        reg16 |= 0xB << 12;
+        writew(reg16, ctrl->hpc_reg + NEXT_CURR_FREQ);
+        
+        mdelay(5); 
+        
+        /* Reenable interrupts */
+        writel(0, ctrl->hpc_reg + INT_MASK);
+
+        pci_write_config_byte(ctrl->pci_dev, 0x41, reg); 
+        
+        /* Restart state machine */
+        reg = ~0xF;
+        pci_read_config_byte(ctrl->pci_dev, 0x43, &reg);
+        pci_write_config_byte(ctrl->pci_dev, 0x43, reg);
+        
+        /* Only if mode change...*/
+        if (((ctrl->speed == PCI_SPEED_66MHz) && (adapter_speed == PCI_SPEED_66MHz_PCIX)) ||
+                ((ctrl->speed == PCI_SPEED_66MHz_PCIX) && (adapter_speed == PCI_SPEED_66MHz))) 
+                        set_SOGO(ctrl);
+        
+        wait_for_ctrl_irq(ctrl);
+        mdelay(1100);
+        
+        /* Restore LED/Slot state */
+        writel(leds, ctrl->hpc_reg + LED_CONTROL);
+        writeb(slot_power, ctrl->hpc_reg + SLOT_ENABLE);
+        
+        set_SOGO(ctrl);
+        wait_for_ctrl_irq(ctrl);
+
+        ctrl->speed = adapter_speed;
+        slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
+
+        info("Successfully changed frequency/mode for adapter in slot %d\n", 
+                        slot->number);
+        return 0;
+}
+
+/* the following routines constitute the bulk of the 
+   hotplug controller logic
+ */
+
+
+/**
+ * board_replaced - Called after a board has been replaced in the system.
+ *
+ * This is only used if we don't have resources for hot add
+ * Turns power on for the board
+ * Checks to see if board is the same
+ * If board is same, reconfigures it
+ * If board isn't same, turns it back off.
+ *
+ */
+static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
+{
+        u8 hp_slot;
+        u8 temp_byte;
+        u8 adapter_speed;
+        u32 index;
+        u32 rc = 0;
+        u32 src = 8;
+
+        hp_slot = func->device - ctrl->slot_device_offset;
+
+        if (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot)) {
+                /**********************************
+                 * The switch is open.
+                 **********************************/
+                rc = INTERLOCK_OPEN;
+        } else if (is_slot_enabled (ctrl, hp_slot)) {
+                /**********************************
+                 * The board is already on
+                 **********************************/
+                rc = CARD_FUNCTIONING;
+        } else {
+                down(&ctrl->crit_sect);
+
+                /* turn on board without attaching to the bus */
+                enable_slot_power (ctrl, hp_slot);
+
+                set_SOGO(ctrl);
+
+                /* Wait for SOBS to be unset */
+                wait_for_ctrl_irq (ctrl);
+
+                /* Change bits in slot power register to force another shift out
+                 * NOTE: this is to work around the timer bug */
+                temp_byte = readb(ctrl->hpc_reg + SLOT_POWER);
+                writeb(0x00, ctrl->hpc_reg + SLOT_POWER);
+                writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER);
+
+                set_SOGO(ctrl);
+
+                /* Wait for SOBS to be unset */
+                wait_for_ctrl_irq (ctrl);
+                
+                adapter_speed = get_adapter_speed(ctrl, hp_slot);
+                if (ctrl->speed != adapter_speed)
+                        if (set_controller_speed(ctrl, adapter_speed, hp_slot))
+                                rc = WRONG_BUS_FREQUENCY;
+
+                /* turn off board without attaching to the bus */
+                disable_slot_power (ctrl, hp_slot);
+
+                set_SOGO(ctrl);
+
+                /* Wait for SOBS to be unset */
+                wait_for_ctrl_irq (ctrl);
+
+                up(&ctrl->crit_sect);
+
+                if (rc)
+                        return rc;
+
+                down(&ctrl->crit_sect);
+
+                slot_enable (ctrl, hp_slot);
+                green_LED_blink (ctrl, hp_slot);
+
+                amber_LED_off (ctrl, hp_slot);
+
+                set_SOGO(ctrl);
+
+                /* Wait for SOBS to be unset */
+                wait_for_ctrl_irq (ctrl);
+
+                up(&ctrl->crit_sect);
+
+                /* Wait for ~1 second because of hot plug spec */
+                long_delay(1*HZ);
+
+                /* Check for a power fault */
+                if (func->status == 0xFF) {
+                        /* power fault occurred, but it was benign */
+                        rc = POWER_FAILURE;
+                        func->status = 0;
+                } else
+                        rc = cpqhp_valid_replace(ctrl, func);
+
+                if (!rc) {
+                        /* It must be the same board */
+
+                        rc = cpqhp_configure_board(ctrl, func);
+
+                        if (rc || src) {
+                                /* If configuration fails, turn it off
+                                 * Get slot won't work for devices behind
+                                 * bridges, but in this case it will always be
+                                 * called for the "base" bus/dev/func of an
+                                 * adapter. */
+
+                                down(&ctrl->crit_sect);
+
+                                amber_LED_on (ctrl, hp_slot);
+                                green_LED_off (ctrl, hp_slot);
+                                slot_disable (ctrl, hp_slot);
+
+                                set_SOGO(ctrl);
+
+                                /* Wait for SOBS to be unset */
+                                wait_for_ctrl_irq (ctrl);
+
+                                up(&ctrl->crit_sect);
+
+                                if (rc)
+                                        return rc;
+                                else
+                                        return 1;
+                        }
+
+                        func->status = 0;
+                        func->switch_save = 0x10;
+
+                        index = 1;
+                        while (((func = cpqhp_slot_find(func->bus, func->device, index)) != NULL) && !rc) {
+                                rc |= cpqhp_configure_board(ctrl, func);
+                                index++;
+                        }
+
+                        if (rc) {
+                                /* If configuration fails, turn it off
+                                 * Get slot won't work for devices behind
+                                 * bridges, but in this case it will always be
+                                 * called for the "base" bus/dev/func of an
+                                 * adapter. */
+
+                                down(&ctrl->crit_sect);
+
+                                amber_LED_on (ctrl, hp_slot);
+                                green_LED_off (ctrl, hp_slot);
+                                slot_disable (ctrl, hp_slot);
+
+                                set_SOGO(ctrl);
+
+                                /* Wait for SOBS to be unset */
+                                wait_for_ctrl_irq (ctrl);
+
+                                up(&ctrl->crit_sect);
+
+                                return rc;
+                        }
+                        /* Done configuring so turn LED on full time */
+
+                        down(&ctrl->crit_sect);
+
+                        green_LED_on (ctrl, hp_slot);
+
+                        set_SOGO(ctrl);
+
+                        /* Wait for SOBS to be unset */
+                        wait_for_ctrl_irq (ctrl);
+
+                        up(&ctrl->crit_sect);
+                        rc = 0;
+                } else {
+                        /* Something is wrong
+
+                         * Get slot won't work for devices behind bridges, but
+                         * in this case it will always be called for the "base"
+                         * bus/dev/func of an adapter. */
+
+                        down(&ctrl->crit_sect);
+
+                        amber_LED_on (ctrl, hp_slot);
+                        green_LED_off (ctrl, hp_slot);
+                        slot_disable (ctrl, hp_slot);
+
+                        set_SOGO(ctrl);
+
+                        /* Wait for SOBS to be unset */
+                        wait_for_ctrl_irq (ctrl);
+
+                        up(&ctrl->crit_sect);
+                }
+
+        }
+        return rc;
+
+}
+
+
+/**
+ * board_added - Called after a board has been added to the system.
+ *
+ * Turns power on for the board
+ * Configures board
+ *
+ */
+static u32 board_added(struct pci_func *func, struct controller *ctrl)
+{
+        u8 hp_slot;
+        u8 temp_byte;
+        u8 adapter_speed;
+        int index;
+        u32 temp_register = 0xFFFFFFFF;
+        u32 rc = 0;
+        struct pci_func *new_slot = NULL;
+        struct slot *p_slot;
+        struct resource_lists res_lists;
+
+        hp_slot = func->device - ctrl->slot_device_offset;
+        dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n",
+            __FUNCTION__, func->device, ctrl->slot_device_offset, hp_slot);
+
+        down(&ctrl->crit_sect);
+
+        /* turn on board without attaching to the bus */
+        enable_slot_power(ctrl, hp_slot);
+
+        set_SOGO(ctrl);
+
+        /* Wait for SOBS to be unset */
+        wait_for_ctrl_irq (ctrl);
+
+        /* Change bits in slot power register to force another shift out
+         * NOTE: this is to work around the timer bug */
+        temp_byte = readb(ctrl->hpc_reg + SLOT_POWER);
+        writeb(0x00, ctrl->hpc_reg + SLOT_POWER);
+        writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER);
+
+        set_SOGO(ctrl);
+
+        /* Wait for SOBS to be unset */
+        wait_for_ctrl_irq (ctrl);
+        
+        adapter_speed = get_adapter_speed(ctrl, hp_slot);
+        if (ctrl->speed != adapter_speed)
+                if (set_controller_speed(ctrl, adapter_speed, hp_slot))
+                        rc = WRONG_BUS_FREQUENCY;
+        
+        /* turn off board without attaching to the bus */
+        disable_slot_power (ctrl, hp_slot);
+
+        set_SOGO(ctrl);
+
+        /* Wait for SOBS to be unset */
+        wait_for_ctrl_irq(ctrl);
+
+        up(&ctrl->crit_sect);
+
+        if (rc)
+                return rc;
+        
+        p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
+
+        /* turn on board and blink green LED */
+
+        dbg("%s: before down\n", __FUNCTION__);
+        down(&ctrl->crit_sect);
+        dbg("%s: after down\n", __FUNCTION__);
+
+        dbg("%s: before slot_enable\n", __FUNCTION__);
+        slot_enable (ctrl, hp_slot);
+
+        dbg("%s: before green_LED_blink\n", __FUNCTION__);
+        green_LED_blink (ctrl, hp_slot);
+
+        dbg("%s: before amber_LED_blink\n", __FUNCTION__);
+        amber_LED_off (ctrl, hp_slot);
+
+        dbg("%s: before set_SOGO\n", __FUNCTION__);
+        set_SOGO(ctrl);
+
+        /* Wait for SOBS to be unset */
+        dbg("%s: before wait_for_ctrl_irq\n", __FUNCTION__);
+        wait_for_ctrl_irq (ctrl);
+        dbg("%s: after wait_for_ctrl_irq\n", __FUNCTION__);
+
+        dbg("%s: before up\n", __FUNCTION__);
+        up(&ctrl->crit_sect);
+        dbg("%s: after up\n", __FUNCTION__);
+
+        /* Wait for ~1 second because of hot plug spec */
+        dbg("%s: before long_delay\n", __FUNCTION__);
+        long_delay(1*HZ);
+        dbg("%s: after long_delay\n", __FUNCTION__);
+
+        dbg("%s: func status = %x\n", __FUNCTION__, func->status);
+        /* Check for a power fault */
+        if (func->status == 0xFF) {
+                /* power fault occurred, but it was benign */
+                temp_register = 0xFFFFFFFF;
+                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 */
+                ctrl->pci_bus->number = func->bus;
+                rc = pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(func->device, func->function), PCI_VENDOR_ID, &temp_register);
+                dbg("%s: pci_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;
+        }
+
+        /* 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);
+
+                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;
+
+                cpqhp_resource_sort_and_combine(&(ctrl->mem_head));
+                cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head));
+                cpqhp_resource_sort_and_combine(&(ctrl->io_head));
+                cpqhp_resource_sort_and_combine(&(ctrl->bus_head));
+
+                if (rc) {
+                        down(&ctrl->crit_sect);
+
+                        amber_LED_on (ctrl, hp_slot);
+                        green_LED_off (ctrl, hp_slot);
+                        slot_disable (ctrl, hp_slot);
+
+                        set_SOGO(ctrl);
+
+                        /* Wait for SOBS to be unset */
+                        wait_for_ctrl_irq (ctrl);
+
+                        up(&ctrl->crit_sect);
+                        return rc;
+                } else {
+                        cpqhp_save_slot_config(ctrl, func);
+                }
+
+
+                func->status = 0;
+                func->switch_save = 0x10;
+                func->is_a_board = 0x01;
+
+                /* next, we will instantiate the linux pci_dev structures (with
+                 * appropriate driver notification, if already present) */
+                dbg("%s: configure linux pci_dev structure\n", __FUNCTION__);
+                index = 0;
+                do {
+                        new_slot = cpqhp_slot_find(ctrl->bus, func->device, index++);
+                        if (new_slot && !new_slot->pci_dev) {
+                                cpqhp_configure_device(ctrl, new_slot);
+                        }
+                } while (new_slot);
+
+                down(&ctrl->crit_sect);
+
+                green_LED_on (ctrl, hp_slot);
+
+                set_SOGO(ctrl);
+
+                /* Wait for SOBS to be unset */
+                wait_for_ctrl_irq (ctrl);
+
+                up(&ctrl->crit_sect);
+        } else {
+                down(&ctrl->crit_sect);
+
+                amber_LED_on (ctrl, hp_slot);
+                green_LED_off (ctrl, hp_slot);
+                slot_disable (ctrl, hp_slot);
+
+                set_SOGO(ctrl);
+
+                /* Wait for SOBS to be unset */
+                wait_for_ctrl_irq (ctrl);
+
+                up(&ctrl->crit_sect);
+
+                return rc;
+        }
+        return 0;
+}
+
+
+/**
+ * remove_board - Turns off slot and LED's
+ *
+ */
+static u32 remove_board(struct pci_func * func, u32 replace_flag, struct controller * ctrl)
+{
+        int index;
+        u8 skip = 0;
+        u8 device;
+        u8 hp_slot;
+        u8 temp_byte;
+        u32 rc;
+        struct resource_lists res_lists;
+        struct pci_func *temp_func;
+
+        if (cpqhp_unconfigure_device(func))
+                return 1;
+
+        device = func->device;
+
+        hp_slot = func->device - ctrl->slot_device_offset;
+        dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
+
+        /* When we get here, it is safe to change base address registers.
+         * We will attempt to save the base address register lengths */
+        if (replace_flag || !ctrl->add_support)
+                rc = cpqhp_save_base_addr_length(ctrl, func);
+        else if (!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 = cpqhp_slot_find(func->bus, func->device, index++);
+                while (temp_func) {
+                        if (temp_func->bus_head || temp_func->mem_head
+                            || temp_func->p_mem_head || temp_func->io_head) {
+                                skip = 1;
+                                break;
+                        }
+                        temp_func = cpqhp_slot_find(temp_func->bus, temp_func->device, index++);
+                }
+
+                if (!skip)
+                        rc = cpqhp_save_used_resources(ctrl, func);
+        }
+        /* Change status to shutdown */
+        if (func->is_a_board)
+                func->status = 0x01;
+        func->configured = 0;
+
+        down(&ctrl->crit_sect);
+
+        green_LED_off (ctrl, hp_slot);
+        slot_disable (ctrl, hp_slot);
+
+        set_SOGO(ctrl);
+
+        /* turn off SERR for slot */
+        temp_byte = readb(ctrl->hpc_reg + SLOT_SERR);
+        temp_byte &= ~(0x01 << hp_slot);
+        writeb(temp_byte, ctrl->hpc_reg + SLOT_SERR);
+
+        /* Wait for SOBS to be unset */
+        wait_for_ctrl_irq (ctrl);
+
+        up(&ctrl->crit_sect);
+
+        if (!replace_flag && 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;
+
+                        cpqhp_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;
+
+                        cpqhp_resource_sort_and_combine(&(ctrl->mem_head));
+                        cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head));
+                        cpqhp_resource_sort_and_combine(&(ctrl->io_head));
+                        cpqhp_resource_sort_and_combine(&(ctrl->bus_head));
+
+                        if (is_bridge(func)) {
+                                bridge_slot_remove(func);
+                        } else
+                                slot_remove(func);
+
+                        func = cpqhp_slot_find(ctrl->bus, device, 0);
+                }
+
+                /* Setup slot structure with entry for empty slot */
+                func = cpqhp_slot_create(ctrl->bus);
+
+                if (func == NULL)
+                        return 1;
+
+                func->bus = ctrl->bus;
+                func->device = device;
+                func->function = 0;
+                func->configured = 0;
+                func->switch_save = 0x10;
+                func->is_a_board = 0;
+                func->p_task_event = NULL;
+        }
+
+        return 0;
+}
+
+static void pushbutton_helper_thread(unsigned long data)
+{
+        pushbutton_pending = data;
+        up(&event_semaphore);
+}
+
+
+/* this is the main worker thread */
+static int event_thread(void* data)
+{
+        struct controller *ctrl;
+        lock_kernel();
+        daemonize("phpd_event");
+        
+        unlock_kernel();
+
+        while (1) {
+                dbg("!!!!event_thread sleeping\n");
+                down_interruptible (&event_semaphore);
+                dbg("event_thread woken finished = %d\n", event_finished);
+                if (event_finished) break;
+                /* Do stuff here */
+                if (pushbutton_pending)
+                        cpqhp_pushbutton_thread(pushbutton_pending);
+                else
+                        for (ctrl = cpqhp_ctrl_list; ctrl; ctrl=ctrl->next)
+                                interrupt_event_handler(ctrl);
+        }
+        dbg("event_thread signals exit\n");
+        up(&event_exit);
+        return 0;
+}
+
+
+int cpqhp_event_start_thread(void)
+{
+        int pid;
+
+        /* initialize our semaphores */
+        init_MUTEX(&delay_sem);
+        init_MUTEX_LOCKED(&event_semaphore);
+        init_MUTEX_LOCKED(&event_exit);
+        event_finished=0;
+
+        pid = kernel_thread(event_thread, NULL, 0);
+        if (pid < 0) {
+                err ("Can't start up our event thread\n");
+                return -1;
+        }
+        dbg("Our event thread pid = %d\n", pid);
+        return 0;
+}
+
+
+void cpqhp_event_stop_thread(void)
+{
+        event_finished = 1;
+        dbg("event_thread finish command given\n");
+        up(&event_semaphore);
+        dbg("wait for event_thread to exit\n");
+        down(&event_exit);
+}
+
+
+static int update_slot_info(struct controller *ctrl, struct slot *slot)
+{
+        struct hotplug_slot_info *info;
+        int result;
+
+        info = kmalloc(sizeof(*info), GFP_KERNEL);
+        if (!info)
+                return -ENOMEM;
+
+        info->power_status = get_slot_enabled(ctrl, slot);
+        info->attention_status = cpq_get_attention_status(ctrl, slot);
+        info->latch_status = cpq_get_latch_status(ctrl, slot);
+        info->adapter_status = get_presence_status(ctrl, slot);
+        result = pci_hp_change_slot_info(slot->hotplug_slot, info);
+        kfree (info);
+        return result;
+}
+
+static void interrupt_event_handler(struct controller *ctrl)
+{
+        int loop = 0;
+        int change = 1;
+        struct pci_func *func;
+        u8 hp_slot;
+        struct slot *p_slot;
+
+        while (change) {
+                change = 0;
+
+                for (loop = 0; loop < 10; loop++) {
+                        /* dbg("loop %d\n", loop); */
+                        if (ctrl->event_queue[loop].event_type != 0) {
+                                hp_slot = ctrl->event_queue[loop].hp_slot;
+
+                                func = cpqhp_slot_find(ctrl->bus, (hp_slot + ctrl->slot_device_offset), 0);
+                                if (!func)
+                                        return;
+
+                                p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
+                                if (!p_slot)
+                                        return;
+
+                                dbg("hp_slot %d, func %p, p_slot %p\n",
+                                    hp_slot, func, p_slot);
+
+                                if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) {
+                                        dbg("button pressed\n");
+                                } else if (ctrl->event_queue[loop].event_type == 
+                                           INT_BUTTON_CANCEL) {
+                                        dbg("button cancel\n");
+                                        del_timer(&p_slot->task_event);
+
+                                        down(&ctrl->crit_sect);
+
+                                        if (p_slot->state == BLINKINGOFF_STATE) {
+                                                /* slot is on */
+                                                dbg("turn on green LED\n");
+                                                green_LED_on (ctrl, hp_slot);
+                                        } else if (p_slot->state == BLINKINGON_STATE) {
+                                                /* slot is off */
+                                                dbg("turn off green LED\n");
+                                                green_LED_off (ctrl, hp_slot);
+                                        }
+
+                                        info(msg_button_cancel, p_slot->number);
+
+                                        p_slot->state = STATIC_STATE;
+
+                                        amber_LED_off (ctrl, hp_slot);
+
+                                        set_SOGO(ctrl);
+
+                                        /* Wait for SOBS to be unset */
+                                        wait_for_ctrl_irq (ctrl);
+
+                                        up(&ctrl->crit_sect);
+                                }
+                                /*** button Released (No action on press...) */
+                                else if (ctrl->event_queue[loop].event_type == INT_BUTTON_RELEASE) {
+                                        dbg("button release\n");
+
+                                        if (is_slot_enabled (ctrl, hp_slot)) {
+                                                dbg("slot is on\n");
+                                                p_slot->state = BLINKINGOFF_STATE;
+                                                info(msg_button_off, p_slot->number);
+                                        } else {
+                                                dbg("slot is off\n");
+                                                p_slot->state = BLINKINGON_STATE;
+                                                info(msg_button_on, p_slot->number);
+                                        }
+                                        down(&ctrl->crit_sect);
+                                        
+                                        dbg("blink green LED and turn off amber\n");
+                                        
+                                        amber_LED_off (ctrl, hp_slot);
+                                        green_LED_blink (ctrl, hp_slot);
+                                        
+                                        set_SOGO(ctrl);
+
+                                        /* Wait for SOBS to be unset */
+                                        wait_for_ctrl_irq (ctrl);
+
+                                        up(&ctrl->crit_sect);
+                                        init_timer(&p_slot->task_event);
+                                        p_slot->hp_slot = hp_slot;
+                                        p_slot->ctrl = ctrl;
+/*                                      p_slot->physical_slot = physical_slot; */
+                                        p_slot->task_event.expires = jiffies + 5 * HZ;   /* 5 second delay */
+                                        p_slot->task_event.function = pushbutton_helper_thread;
+                                        p_slot->task_event.data = (u32) p_slot;
+
+                                        dbg("add_timer p_slot = %p\n", p_slot);
+                                        add_timer(&p_slot->task_event);
+                                }
+                                /***********POWER FAULT */
+                                else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) {
+                                        dbg("power fault\n");
+                                } else {
+                                        /* refresh notification */
+                                        if (p_slot)
+                                                update_slot_info(ctrl, p_slot);
+                                }
+
+                                ctrl->event_queue[loop].event_type = 0;
+
+                                change = 1;
+                        }
+                }               /* End of FOR loop */
+        }
+
+        return;
+}
+
+
+/**
+ * cpqhp_pushbutton_thread
+ *
+ * Scheduled procedure to handle blocking stuff for the pushbuttons
+ * Handles all pending events and exits.
+ *
+ */
+void cpqhp_pushbutton_thread(unsigned long slot)
+{
+        u8 hp_slot;
+        u8 device;
+        struct pci_func *func;
+        struct slot *p_slot = (struct slot *) slot;
+        struct controller *ctrl = (struct controller *) p_slot->ctrl;
+
+        pushbutton_pending = 0;
+        hp_slot = p_slot->hp_slot;
+
+        device = p_slot->device;
+
+        if (is_slot_enabled(ctrl, hp_slot)) {
+                p_slot->state = POWEROFF_STATE;
+                /* power Down board */
+                func = cpqhp_slot_find(p_slot->bus, p_slot->device, 0);
+                dbg("In power_down_board, func = %p, ctrl = %p\n", func, ctrl);
+                if (!func) {
+                        dbg("Error! func NULL in %s\n", __FUNCTION__);
+                        return ;
+                }
+
+                if (func != NULL && ctrl != NULL) {
+                        if (cpqhp_process_SS(ctrl, func) != 0) {
+                                amber_LED_on (ctrl, hp_slot);
+                                green_LED_on (ctrl, hp_slot);
+                                
+                                set_SOGO(ctrl);
+
+                                /* Wait for SOBS to be unset */
+                                wait_for_ctrl_irq (ctrl);
+                        }
+                }
+
+                p_slot->state = STATIC_STATE;
+        } else {
+                p_slot->state = POWERON_STATE;
+                /* slot is off */
+
+                func = cpqhp_slot_find(p_slot->bus, p_slot->device, 0);
+                dbg("In add_board, func = %p, ctrl = %p\n", func, ctrl);
+                if (!func) {
+                        dbg("Error! func NULL in %s\n", __FUNCTION__);
+                        return ;
+                }
+
+                if (func != NULL && ctrl != NULL) {
+                        if (cpqhp_process_SI(ctrl, func) != 0) {
+                                amber_LED_on(ctrl, hp_slot);
+                                green_LED_off(ctrl, hp_slot);
+                                
+                                set_SOGO(ctrl);
+
+                                /* Wait for SOBS to be unset */
+                                wait_for_ctrl_irq (ctrl);
+                        }
+                }
+
+                p_slot->state = STATIC_STATE;
+        }
+
+        return;
+}
+
+
+int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func)
+{
+        u8 device, hp_slot;
+        u16 temp_word;
+        u32 tempdword;
+        int rc;
+        struct slot* p_slot;
+        int physical_slot = 0;
+
+        tempdword = 0;
+
+        device = func->device;
+        hp_slot = device - ctrl->slot_device_offset;
+        p_slot = cpqhp_find_slot(ctrl, device);
+        if (p_slot)
+                physical_slot = p_slot->number;
+
+        /* Check to see if the interlock is closed */
+        tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
+
+        if (tempdword & (0x01 << hp_slot)) {
+                return 1;
+        }
+
+        if (func->is_a_board) {
+                rc = board_replaced(func, ctrl);
+        } else {
+                /* add board */
+                slot_remove(func);
+
+                func = cpqhp_slot_create(ctrl->bus);
+                if (func == NULL)
+                        return 1;
+
+                func->bus = ctrl->bus;
+                func->device = device;
+                func->function = 0;
+                func->configured = 0;
+                func->is_a_board = 1;
+
+                /* We have to save the presence info for these slots */
+                temp_word = ctrl->ctrl_int_comp >> 16;
+                func->presence_save = (temp_word >> hp_slot) & 0x01;
+                func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02;
+
+                if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) {
+                        func->switch_save = 0;
+                } else {
+                        func->switch_save = 0x10;
+                }
+
+                rc = board_added(func, ctrl);
+                if (rc) {
+                        if (is_bridge(func)) {
+                                bridge_slot_remove(func);
+                        } else
+                                slot_remove(func);
+
+                        /* Setup slot structure with entry for empty slot */
+                        func = cpqhp_slot_create(ctrl->bus);
+
+                        if (func == NULL)
+                                return 1;
+
+                        func->bus = ctrl->bus;
+                        func->device = device;
+                        func->function = 0;
+                        func->configured = 0;
+                        func->is_a_board = 0;
+
+                        /* We have to save the presence info for these slots */
+                        temp_word = ctrl->ctrl_int_comp >> 16;
+                        func->presence_save = (temp_word >> hp_slot) & 0x01;
+                        func->presence_save |=
+                        (temp_word >> (hp_slot + 7)) & 0x02;
+
+                        if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) {
+                                func->switch_save = 0;
+                        } else {
+                                func->switch_save = 0x10;
+                        }
+                }
+        }
+
+        if (rc) {
+                dbg("%s: rc = %d\n", __FUNCTION__, rc);
+        }
+
+        if (p_slot)
+                update_slot_info(ctrl, p_slot);
+
+        return rc;
+}
+
+
+int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func)
+{
+        u8 device, class_code, header_type, BCR;
+        u8 index = 0;
+        u8 replace_flag;
+        u32 rc = 0;
+        unsigned int devfn;
+        struct slot* p_slot;
+        struct pci_bus *pci_bus = ctrl->pci_bus;
+        int physical_slot=0;
+
+        device = func->device; 
+        func = cpqhp_slot_find(ctrl->bus, device, index++);
+        p_slot = cpqhp_find_slot(ctrl, device);
+        if (p_slot) {
+                physical_slot = p_slot->number;
+        }
+
+        /* Make sure there are no video controllers here */
+        while (func && !rc) {
+                pci_bus->number = func->bus;
+                devfn = PCI_DEVFN(func->device, func->function);
+
+                /* Check the Class Code */
+                rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
+                if (rc)
+                        return rc;
+
+                if (class_code == PCI_BASE_CLASS_DISPLAY) {
+                        /* Display/Video adapter (not supported) */
+                        rc = REMOVE_NOT_SUPPORTED;
+                } else {
+                        /* See if it's a bridge */
+                        rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
+                        if (rc)
+                                return rc;
+
+                        /* If it's a bridge, check the VGA Enable bit */
+                        if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
+                                rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_BRIDGE_CONTROL, &BCR);
+                                if (rc)
+                                        return rc;
+
+                                /* If the VGA Enable bit is set, remove isn't
+                                 * supported */
+                                if (BCR & PCI_BRIDGE_CTL_VGA) {
+                                        rc = REMOVE_NOT_SUPPORTED;
+                                }
+                        }
+                }
+
+                func = cpqhp_slot_find(ctrl->bus, device, index++);
+        }
+
+        func = cpqhp_slot_find(ctrl->bus, device, 0);
+        if ((func != NULL) && !rc) {
+                /* FIXME: Replace flag should be passed into process_SS */
+                replace_flag = !(ctrl->add_support);
+                rc = remove_board(func, replace_flag, ctrl);
+        } else if (!rc) {
+                rc = 1;
+        }
+
+        if (p_slot)
+                update_slot_info(ctrl, p_slot);
+
+        return rc;
+}
+
+/**
+ * switch_leds: switch the leds, go from one site to the other.
+ * @ctrl: controller to use
+ * @num_of_slots: number of slots to use
+ * @direction: 1 to start from the left side, 0 to start right.
+ */
+static void switch_leds(struct controller *ctrl, const int num_of_slots,
+                        u32 *work_LED, const int direction)
+{
+        int loop;
+
+        for (loop = 0; loop < num_of_slots; loop++) {
+                if (direction)
+                        *work_LED = *work_LED >> 1;
+                else
+                        *work_LED = *work_LED << 1;
+                writel(*work_LED, ctrl->hpc_reg + LED_CONTROL);
+
+                set_SOGO(ctrl);
+
+                /* Wait for SOGO interrupt */
+                wait_for_ctrl_irq(ctrl);
+
+                /* Get ready for next iteration */
+                long_delay((2*HZ)/10);
+        }
+}
+
+/**
+ * hardware_test - runs hardware tests
+ *
+ * For hot plug ctrl folks to play with.
+ * test_num is the number written to the "test" file in sysfs
+ *
+ */
+int cpqhp_hardware_test(struct controller *ctrl, int test_num)
+{
+        u32 save_LED;
+        u32 work_LED;
+        int loop;
+        int num_of_slots;
+
+        num_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0f;
+
+        switch (test_num) {
+                case 1:
+                        /* Do stuff here! */
+
+                        /* Do that funky LED thing */
+                        /* so we can restore them later */
+                        save_LED = readl(ctrl->hpc_reg + LED_CONTROL);
+                        work_LED = 0x01010101;
+                        switch_leds(ctrl, num_of_slots, &work_LED, 0);
+                        switch_leds(ctrl, num_of_slots, &work_LED, 1);
+                        switch_leds(ctrl, num_of_slots, &work_LED, 0);
+                        switch_leds(ctrl, num_of_slots, &work_LED, 1);
+
+                        work_LED = 0x01010000;
+                        writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
+                        switch_leds(ctrl, num_of_slots, &work_LED, 0);
+                        switch_leds(ctrl, num_of_slots, &work_LED, 1);
+                        work_LED = 0x00000101;
+                        writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
+                        switch_leds(ctrl, num_of_slots, &work_LED, 0);
+                        switch_leds(ctrl, num_of_slots, &work_LED, 1);
+
+                        work_LED = 0x01010000;
+                        writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
+                        for (loop = 0; loop < num_of_slots; loop++) {
+                                set_SOGO(ctrl);
+
+                                /* Wait for SOGO interrupt */
+                                wait_for_ctrl_irq (ctrl);
+
+                                /* Get ready for next iteration */
+                                long_delay((3*HZ)/10);
+                                work_LED = work_LED >> 16;
+                                writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
+                                
+                                set_SOGO(ctrl);
+
+                                /* Wait for SOGO interrupt */
+                                wait_for_ctrl_irq (ctrl);
+
+                                /* Get ready for next iteration */
+                                long_delay((3*HZ)/10);
+                                work_LED = work_LED << 16;
+                                writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
+                                work_LED = work_LED << 1;
+                                writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
+                        }
+
+                        /* put it back the way it was */
+                        writel(save_LED, ctrl->hpc_reg + LED_CONTROL);
+
+                        set_SOGO(ctrl);
+
+                        /* Wait for SOBS to be unset */
+                        wait_for_ctrl_irq (ctrl);
+                        break;
+                case 2:
+                        /* Do other stuff here! */
+                        break;
+                case 3:
+                        /* and more... */
+                        break;
+        }
+        return 0;
+}
+
+
+/**
+ * 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 temp_byte, function, max_functions, stop_it;
+        int rc;
+        u32 ID;
+        struct pci_func *new_slot;
+        int index;
+
+        new_slot = func;
+
+        dbg("%s\n", __FUNCTION__);
+        /* Check for Multi-function device */
+        ctrl->pci_bus->number = func->bus;
+        rc = pci_bus_read_config_byte (ctrl->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);
+
+                if (rc) {
+                        dbg("configure_new_function failed %d\n",rc);
+                        index = 0;
+
+                        while (new_slot) {
+                                new_slot = cpqhp_slot_find(new_slot->bus, new_slot->device, index++);
+
+                                if (new_slot)
+                                        cpqhp_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 (ctrl->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 = cpqhp_slot_create(func->bus);
+
+                                if (new_slot == NULL)
+                                        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 configure_new_device\n");
+
+        return 0;
+}
+
+
+/*
+  Configuration logic that involves the hotplug data structures and 
+  their bookkeeping
+ */
+
+
+/**
+ * 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)
+{
+        int cloop;
+        u8 IRQ = 0;
+        u8 temp_byte;
+        u8 device;
+        u8 class_code;
+        u16 command;
+        u16 temp_word;
+        u32 temp_dword;
+        u32 rc;
+        u32 temp_register;
+        u32 base;
+        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 pci_bus *pci_bus;
+        struct resource_lists temp_resources;
+
+        pci_bus = ctrl->pci_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;
+
+        if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { /* PCI-PCI Bridge */
+                /* set Primary bus */
+                dbg("set Primary bus = %d\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 */
+                dbg("find ranges of buses to use\n");
+                bus_node = get_max_resource(&(resources->bus_head), 1);
+
+                /* If we don't have any busses to allocate, we can't continue */
+                if (!bus_node)
+                        return -ENOMEM;
+
+                /* set Secondary bus */
+                temp_byte = bus_node->base;
+                dbg("set Secondary bus = %d\n", bus_node->base);
+                rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, temp_byte);
+                if (rc)
+                        return rc;
+
+                /* set subordinate bus */
+                temp_byte = bus_node->base + bus_node->length - 1;
+                dbg("set subordinate bus = %d\n", bus_node->base + bus_node->length - 1);
+                rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
+                if (rc)
+                        return rc;
+
+                /* set subordinate Latency Timer and base Latency Timer */
+                temp_byte = 0x40;
+                rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SEC_LATENCY_TIMER, temp_byte);
+                if (rc)
+                        return rc;
+                rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_LATENCY_TIMER, temp_byte);
+                if (rc)
+                        return rc;
+
+                /* set Cache Line size */
+                temp_byte = 0x08;
+                rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_CACHE_LINE_SIZE, temp_byte);
+                if (rc)
+                        return rc;
+
+                /* Setup the IO, memory, and prefetchable windows */
+                io_node = get_max_resource(&(resources->io_head), 0x1000);
+                if (!io_node)
+                        return -ENOMEM;
+                mem_node = get_max_resource(&(resources->mem_head), 0x100000);
+                if (!mem_node)
+                        return -ENOMEM;
+                p_mem_node = get_max_resource(&(resources->p_mem_head), 0x100000);
+                if (!p_mem_node)
+                        return -ENOMEM;
+                dbg("Setup the IO, memory, and prefetchable windows\n");
+                dbg("io_node\n");
+                dbg("(base, len, next) (%x, %x, %p)\n", io_node->base,
+                                        io_node->length, io_node->next);
+                dbg("mem_node\n");
+                dbg("(base, len, next) (%x, %x, %p)\n", mem_node->base,
+                                        mem_node->length, mem_node->next);
+                dbg("p_mem_node\n");
+                dbg("(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(*hold_bus_node), GFP_KERNEL);
+                hold_IO_node = kmalloc(sizeof(*hold_IO_node), GFP_KERNEL);
+                hold_mem_node = kmalloc(sizeof(*hold_mem_node), GFP_KERNEL);
+                hold_p_mem_node = kmalloc(sizeof(*hold_p_mem_node), 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 */
+                        temp_byte = io_node->base >> 8;
+                        rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_BASE, temp_byte);
+
+                        temp_byte = (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. */
+                if (mem_node) {
+                        memcpy(hold_mem_node, mem_node, sizeof(struct pci_resource));
+                        mem_node->next = NULL;
+
+                        /* set Mem base and Limit registers */
+                        temp_word = mem_node->base >> 16;
+                        rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
+
+                        temp_word = (mem_node->base + mem_node->length - 1) >> 16;
+                        rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
+                } else {
+                        temp_word = 0xFFFF;
+                        rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
+
+                        temp_word = 0x0000;
+                        rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
+
+                        kfree(hold_mem_node);
+                        hold_mem_node = NULL;
+                }
+
+                /* 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. */
+                if (p_mem_node) {
+                        memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource));
+                        p_mem_node->next = NULL;
+
+                        /* set Pre Mem base and Limit registers */
+                        temp_word = p_mem_node->base >> 16;
+                        rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
+
+                        temp_word = (p_mem_node->base + p_mem_node->length - 1) >> 16;
+                        rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
+                } else {
+                        temp_word = 0xFFFF;
+                        rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
+
+                        temp_word = 0x0000;
+                        rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
+
+                        kfree(hold_p_mem_node);
+                        hold_p_mem_node = NULL;
+                }
+
+                /* 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), 0x00, &ID);
+                        pci_bus->number = func->bus;
+
+                        if (ID != 0xFFFFFFFF) {   /*  device present */
+                                /* Setup slot structure. */
+                                new_slot = cpqhp_slot_create(hold_bus_node->base);
+
+                                if (new_slot == NULL) {
+                                        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);
+                                dbg("configure_new_device rc=0x%x\n",rc);
+                        }       /* End of IF (device in slot?) */
+                }               /* End of FOR loop */
+
+                if (rc)
+                        goto free_and_out;
+                /* 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 = cpqhp_set_irq(func->bus, func->device,
+                                                           0x0A + cloop, irqs.interrupt[cloop]);
+                                        if (rc)
+                                                goto free_and_out;
+                                }
+                        }       /* 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 = temp_resources.bus_head->base - 1;
+
+                        /* set subordinate bus */
+                        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 {
+                                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;
+
+                                temp_byte = (hold_IO_node->base) >> 8;
+                                rc = pci_bus_write_config_word (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;
+
+                                        temp_byte = (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_word = 0x0000;
+                                        rc = pci_bus_write_config_word (pci_bus, devfn, PCI_IO_LIMIT, temp_word);
+
+                                        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, 0x100000);
+
+                        /* Check if we were able to split something off */
+                        if (mem_node) {
+                                hold_mem_node->base = mem_node->base + mem_node->length;
+
+                                temp_word = (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), 0x100000);
+
+                        /* 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 */
+                                        temp_word = (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, 0x100000);
+
+                        /* 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;
+
+                                temp_word = (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), 0x100000);
+
+                        /* 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;
+
+                                        temp_word = (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 */
+
+                /* enable card */
+                command = 0x0157;       /* = PCI_COMMAND_IO |
+                                         *   PCI_COMMAND_MEMORY |
+                                         *   PCI_COMMAND_MASTER |
+                                         *   PCI_COMMAND_INVALIDATE |
+                                         *   PCI_COMMAND_PARITY |
+                                         *   PCI_COMMAND_SERR */
+                rc = pci_bus_write_config_word (pci_bus, devfn, PCI_COMMAND, command);
+
+                /* set Bridge Control Register */
+                command = 0x07;         /* = PCI_BRIDGE_CTL_PARITY |
+                                         *   PCI_BRIDGE_CTL_SERR |
+                                         *   PCI_BRIDGE_CTL_NO_ISA */
+                rc = pci_bus_write_config_word (pci_bus, devfn, PCI_BRIDGE_CONTROL, command);
+        } else if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
+                /* Standard device */
+                rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
+
+                if (class_code == PCI_BASE_CLASS_DISPLAY) {
+                        /* Display (video) adapter (not supported) */
+                        return DEVICE_TYPE_NOT_SUPPORTED;
+                }
+                /* Figure out IO and memory needs */
+                for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
+                        temp_register = 0xFFFFFFFF;
+
+                        dbg("CND: bus=%d, devfn=%d, offset=%d\n", pci_bus->number, devfn, cloop);
+                        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("CND: base = 0x%x\n", temp_register);
+
+                        if (temp_register) {      /* If this register is implemented */
+                                if ((temp_register & 0x03L) == 0x01) {
+                                        /* Map IO */
+
+                                        /* set base = amount of IO space */
+                                        base = temp_register & 0xFFFFFFFC;
+                                        base = ~base + 1;
+
+                                        dbg("CND:      length = 0x%x\n", base);
+                                        io_node = get_io_resource(&(resources->io_head), base);
+                                        dbg("Got io_node start = %8.8x, length = %8.8x next (%p)\n",
+                                            io_node->base, io_node->length, io_node->next);
+                                        dbg("func (%p) io_head (%p)\n", func, func->io_head);
+
+                                        /* allocate the resource to the board */
+                                        if (io_node) {
+                                                base = io_node->base;
+
+                                                io_node->next = func->io_head;
+                                                func->io_head = io_node;
+                                        } else
+                                                return -ENOMEM;
+                                } else if ((temp_register & 0x0BL) == 0x08) {
+                                        /* Map prefetchable memory */
+                                        base = temp_register & 0xFFFFFFF0;
+                                        base = ~base + 1;
+
+                                        dbg("CND:      length = 0x%x\n", base);
+                                        p_mem_node = get_resource(&(resources->p_mem_head), base);
+
+                                        /* allocate the resource to the board */
+                                        if (p_mem_node) {
+                                                base = p_mem_node->base;
+
+                                                p_mem_node->next = func->p_mem_head;
+                                                func->p_mem_head = p_mem_node;
+                                        } else
+                                                return -ENOMEM;
+                                } else if ((temp_register & 0x0BL) == 0x00) {
+                                        /* Map memory */
+                                        base = temp_register & 0xFFFFFFF0;
+                                        base = ~base + 1;
+
+                                        dbg("CND:      length = 0x%x\n", base);
+                                        mem_node = get_resource(&(resources->mem_head), base);
+
+                                        /* allocate the resource to the board */
+                                        if (mem_node) {
+                                                base = mem_node->base;
+
+                                                mem_node->next = func->mem_head;
+                                                func->mem_head = mem_node;
+                                        } else
+                                                return -ENOMEM;
+                                } else if ((temp_register & 0x0BL) == 0x04) {
+                                        /* Map memory */
+                                        base = temp_register & 0xFFFFFFF0;
+                                        base = ~base + 1;
+
+                                        dbg("CND:      length = 0x%x\n", base);
+                                        mem_node = get_resource(&(resources->mem_head), base);
+
+                                        /* allocate the resource to the board */
+                                        if (mem_node) {
+                                                base = mem_node->base;
+
+                                                mem_node->next = func->mem_head;
+                                                func->mem_head = mem_node;
+                                        } else
+                                                return -ENOMEM;
+                                } else if ((temp_register & 0x0BL) == 0x06) {
+                                        /* Those bits are reserved, we can't handle this */
+                                        return 1;
+                                } else {
+                                        /* Requesting space below 1M */
+                                        return NOT_ENOUGH_RESOURCES;
+                                }
+
+                                rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base);
+
+                                /* Check for 64-bit base */
+                                if ((temp_register & 0x07L) == 0x04) {
+                                        cloop += 4;
+
+                                        /* Upper 32 bits of address always zero
+                                         * on today's systems */
+                                        /* FIXME this is probably not true on
+                                         * Alpha and ia64??? */
+                                        base = 0;
+                                        rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base);
+                                }
+                        }
+                }               /* End of base register loop */
+                if (cpqhp_legacy_mode) {
+                        /* Figure out which interrupt pin this function uses */
+                        rc = pci_bus_read_config_byte (pci_bus, devfn, 
+                                PCI_INTERRUPT_PIN, &temp_byte);
+
+                        /* If this function needs an interrupt and we are behind
+                         * a bridge and the pin is tied to something that's
+                         * alread mapped, set this one the same */
+                        if (temp_byte && resources->irqs && 
+                            (resources->irqs->valid_INT & 
+                             (0x01 << ((temp_byte + resources->irqs->barber_pole - 1) & 0x03)))) {
+                                /* We have to share with something already set up */
+                                IRQ = resources->irqs->interrupt[(temp_byte + 
+                                        resources->irqs->barber_pole - 1) & 0x03];
+                        } else {
+                                /* Program IRQ based on card type */
+                                rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
+
+                                if (class_code == PCI_BASE_CLASS_STORAGE) {
+                                        IRQ = cpqhp_disk_irq;
+                                } else {
+                                        IRQ = cpqhp_nic_irq;
+                                }
+                        }
+
+                        /* IRQ Line */
+                        rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_INTERRUPT_LINE, IRQ);
+                }
+
+                if (!behind_bridge) {
+                        rc = cpqhp_set_irq(func->bus, func->device, temp_byte + 0x09, IRQ);
+                        if (rc)
+                                return 1;
+                } else {
+                        /* TBD - this code may also belong in the other clause
+                         * of this If statement */
+                        resources->irqs->interrupt[(temp_byte + resources->irqs->barber_pole - 1) & 0x03] = IRQ;
+                        resources->irqs->valid_INT |= 0x01 << (temp_byte + resources->irqs->barber_pole - 1) & 0x03;
+                }
+
+                /* Latency Timer */
+                temp_byte = 0x40;
+                rc = pci_bus_write_config_byte(pci_bus, devfn,
+                                        PCI_LATENCY_TIMER, temp_byte);
+
+                /* Cache Line size */
+                temp_byte = 0x08;
+                rc = pci_bus_write_config_byte(pci_bus, devfn,
+                                        PCI_CACHE_LINE_SIZE, temp_byte);
+
+                /* disable ROM base Address */
+                temp_dword = 0x00L;
+                rc = pci_bus_write_config_word(pci_bus, devfn,
+                                        PCI_ROM_ADDRESS, temp_dword);
+
+                /* enable card */
+                temp_word = 0x0157;     /* = PCI_COMMAND_IO |
+                                         *   PCI_COMMAND_MEMORY |
+                                         *   PCI_COMMAND_MASTER |
+                                         *   PCI_COMMAND_INVALIDATE |
+                                         *   PCI_COMMAND_PARITY |
+                                         *   PCI_COMMAND_SERR */
+                rc = pci_bus_write_config_word (pci_bus, devfn,
+                                        PCI_COMMAND, temp_word);
+        } else {                /* End of Not-A-Bridge else */
+                /* It's some strange type of PCI adapter (Cardbus?) */
+                return DEVICE_TYPE_NOT_SUPPORTED;
+        }
+
+        func->configured = 1;
+
+        return 0;
+free_and_out:
+        cpqhp_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;
+}