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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [hotplug/] [cpqphp_ctrl.c] - Blame information for rev 1774

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/*
 * 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/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);
        set_current_state(TASK_INTERRUPTIBLE);
        schedule_timeout(delay);
        remove_wait_queue(&delay_wait, &wait);
        set_current_state(TASK_RUNNING);
 
        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
 */
struct slot *cpqhp_find_slot (struct controller * ctrl, u8 device)
{
        struct slot *slot;
 
        if (!ctrl)
                return NULL;
 
        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 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
 *
 * Sorts nodes on the list by their length.
 * Smallest first.
 *
 */
static int sort_by_size(struct pci_resource **head)
{
        struct pci_resource *current_res;
        struct pci_resource *next_res;
        int out_of_order = 1;
 
        if (!(*head))
                return(1);
 
        if (!((*head)->next))
                return(0);
 
        while (out_of_order) {
                out_of_order = 0;
 
                // Special case for swapping list head
                if (((*head)->next) &&
                    ((*head)->length > (*head)->next->length)) {
                        out_of_order++;
                        current_res = *head;
                        *head = (*head)->next;
                        current_res->next = (*head)->next;
                        (*head)->next = current_res;
                }
 
                current_res = *head;
 
                while (current_res->next && current_res->next->next) {
                        if (current_res->next->length > current_res->next->next->length) {
                                out_of_order++;
                                next_res = current_res->next;
                                current_res->next = current_res->next->next;
                                current_res = current_res->next;
                                next_res->next = current_res->next;
                                current_res->next = next_res;
                        } else
                                current_res = current_res->next;
                }
        }  // End of out_of_order loop
 
        return(0);
}
 
 
/*
 * sort_by_max_size
 *
 * Sorts nodes on the list by their length.
 * Largest first.
 *
 */
static int sort_by_max_size(struct pci_resource **head)
{
        struct pci_resource *current_res;
        struct pci_resource *next_res;
        int out_of_order = 1;
 
        if (!(*head))
                return(1);
 
        if (!((*head)->next))
                return(0);
 
        while (out_of_order) {
                out_of_order = 0;
 
                // Special case for swapping list head
                if (((*head)->next) &&
                    ((*head)->length < (*head)->next->length)) {
                        out_of_order++;
                        current_res = *head;
                        *head = (*head)->next;
                        current_res->next = (*head)->next;
                        (*head)->next = current_res;
                }
 
                current_res = *head;
 
                while (current_res->next && current_res->next->next) {
                        if (current_res->next->length < current_res->next->next->length) {
                                out_of_order++;
                                next_res = current_res->next;
                                current_res->next = current_res->next->next;
                                current_res = current_res->next;
                                next_res->next = current_res->next;
                                current_res->next = next_res;
                        } else
                                current_res = current_res->next;
                }
        }  // End of out_of_order loop
 
        return(0);
}
 
 
/*
 * do_pre_bridge_resource_split
 *
 *      Returns zero or one node of resources that aren't in use
 *
 */
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 = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 
                if (!split_node)
                        return(NULL);
 
                temp_dword = (node->length | (alignment-1)) + 1 - alignment;
 
                split_node->base = node->base;
                split_node->length = temp_dword;
 
                node->length -= temp_dword;
                node->base += split_node->length;
 
                // Put it in the list
                *head = split_node;
                split_node->next = node;
        }
 
        if (node->length < alignment) {
                return(NULL);
        }
 
        // Now unlink it
        if (*head == node) {
                *head = node->next;
                node->next = NULL;
        } else {
                prevnode = *head;
                while (prevnode->next != node)
                        prevnode = prevnode->next;
 
                prevnode->next = node->next;
                node->next = NULL;
        }
 
        return(node);
}
 
 
/*
 * do_bridge_resource_split
 *
 *      Returns zero or 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;
 
        if (!(*head))
                return(NULL);
 
        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) {
                kfree(node);
                return(NULL);
        }
 
        if (node->base & (alignment - 1)) {
                // Short circuit if adjusted size is too small
                temp_dword = (node->base | (alignment-1)) + 1;
                if ((node->length - (temp_dword - node->base)) < alignment) {
                        kfree(node);
                        return(NULL);
                }
 
                node->length -= (temp_dword - node->base);
                node->base = temp_dword;
        }
 
        if (node->length & (alignment - 1)) {
                // There's stuff in use after this node
                kfree(node);
                return(NULL);
        }
 
        return(node);
}
 
 
/*
 * get_io_resource
 *
 * this function sorts the resource list by size and then
 * returns the first node of "size" length that is not in the
 * ISA aliasing window.  If it finds a node larger than "size"
 * it will split it up.
 *
 * size must be a power of two.
 */
static struct pci_resource *get_io_resource (struct pci_resource **head, u32 size)
{
        struct pci_resource *prevnode;
        struct pci_resource *node;
        struct pci_resource *split_node;
        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 = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 
                        if (!split_node)
                                return(NULL);
 
                        split_node->base = node->base;
                        split_node->length = temp_dword - node->base;
                        node->base = temp_dword;
                        node->length -= split_node->length;
 
                        // Put it in the list
                        split_node->next = node->next;
                        node->next = split_node;
                } // End of non-aligned base
 
                // Don't need to check if too small since we already did
                if (node->length > size) {
                        // this one is longer than we need
                        // so we'll make a new entry and split it up
                        split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 
                        if (!split_node)
                                return(NULL);
 
                        split_node->base = node->base + size;
                        split_node->length = node->length - size;
                        node->length = size;
 
                        // Put it in the list
                        split_node->next = node->next;
                        node->next = split_node;
                }  // End of too big on top end
 
                // For IO make sure it's not in the ISA aliasing space
                if (node->base & 0x300L)
                        continue;
 
                // If we got here, then it is the right size
                // Now take it out of the list
                if (*head == node) {
                        *head = node->next;
                } else {
                        prevnode = *head;
                        while (prevnode->next != node)
                                prevnode = prevnode->next;
 
                        prevnode->next = node->next;
                }
                node->next = NULL;
                // Stop looping
                break;
        }
 
        return(node);
}
 
 
/*
 * get_max_resource
 *
 * Gets the largest node that is at least "size" big from the
 * list pointed to by head.  It aligns the node on top and bottom
 * to "size" alignment before returning it.
 */
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 (!(*head))
                return(NULL);
 
        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 = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 
                        if (!split_node)
                                return(NULL);
 
                        split_node->base = max->base;
                        split_node->length = temp_dword - max->base;
                        max->base = temp_dword;
                        max->length -= split_node->length;
 
                        // Put it next in the list
                        split_node->next = max->next;
                        max->next = split_node;
                }
 
                if ((max->base + max->length) & (size - 1)) {
                        // this one isn't end aligned properly at the top
                        // so we'll make a new entry and split it up
                        split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 
                        if (!split_node)
                                return(NULL);
                        temp_dword = ((max->base + max->length) & ~(size - 1));
                        split_node->base = temp_dword;
                        split_node->length = max->length + max->base
                                             - split_node->base;
                        max->length -= split_node->length;
 
                        // Put it in the list
                        split_node->next = max->next;
                        max->next = split_node;
                }
 
                // Make sure it didn't shrink too much when we aligned it
                if (max->length < size)
                        continue;
 
                // Now take it out of the list
                temp = (struct pci_resource*) *head;
                if (temp == max) {
                        *head = max->next;
                } else {
                        while (temp && temp->next != max) {
                                temp = temp->next;
                        }
 
                        temp->next = max->next;
                }
 
                max->next = NULL;
                return(max);
        }
 
        // If we get here, we couldn't find one
        return(NULL);
}
 
 
/*
 * get_resource
 *
 * this function sorts the resource list by size and then
 * returns the first node of "size" length.  If it finds a node
 * larger than "size" it will split it up.
 *
 * size must be a power of two.
 */
static struct pci_resource *get_resource (struct pci_resource **head, u32 size)
{
        struct pci_resource *prevnode;
        struct pci_resource *node;
        struct pci_resource *split_node;
        u32 temp_dword;
 
        if (!(*head))
                return(NULL);
 
        if ( 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 = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 
                        if (!split_node)
                                return(NULL);
 
                        split_node->base = node->base;
                        split_node->length = temp_dword - node->base;
                        node->base = temp_dword;
                        node->length -= split_node->length;
 
                        // Put it in the list
                        split_node->next = node->next;
                        node->next = split_node;
                } // End of non-aligned base
 
                // Don't need to check if too small since we already did
                if (node->length > size) {
                        dbg("%s: too big\n", __FUNCTION__);
                        // this one is longer than we need
                        // so we'll make a new entry and split it up
                        split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 
                        if (!split_node)
                                return(NULL);
 
                        split_node->base = node->base + size;
                        split_node->length = node->length - size;
                        node->length = size;
 
                        // Put it in the list
                        split_node->next = node->next;
                        node->next = split_node;
                }  // End of too big on top end
 
                dbg("%s: got one!!!\n", __FUNCTION__);
                // If we got here, then it is the right size
                // Now take it out of the list
                if (*head == node) {
                        *head = node->next;
                } else {
                        prevnode = *head;
                        while (prevnode->next != node)
                                prevnode = prevnode->next;
 
                        prevnode->next = node->next;
                }
                node->next = NULL;
                // Stop looping
                break;
        }
        return(node);
}
 
 
/*
 * cpqhp_resource_sort_and_combine
 *
 * Sorts all of the nodes in the list in ascending order by
 * their base addresses.  Also does garbage collection by
 * combining adjacent nodes.
 *
 * returns 0 if success
 */
int 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);
}
 
 
void cpqhp_ctrl_intr(int IRQ, struct controller * ctrl, struct pt_regs *regs)
{
        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;
        }
 
        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");
                mark_bh(IMMEDIATE_BH);
        }
 
}
 
 
/**
 * 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 = (struct pci_func *) kmalloc(sizeof(struct pci_func), 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;
 
        if (bridge == NULL)
                return(1);
 
        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;
                kfree(bridge);
                return(0);
        }
 
        while ((next->next != bridge) && (next->next != NULL)) {
                next = next->next;
        }
 
        if (next->next == bridge) {
                next->next = bridge->next;
                kfree(bridge);
                return(0);
        } else
                return(2);
}
 
 
/**
 * 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;
}
 
 
/* 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 {
                // Wait for exclusive access to hardware
                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);
 
                // 66MHz and/or PCI-X support check
                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);
 
                // Done with exclusive hardware access
                up(&ctrl->crit_sect);
 
                if (rc)
                        return(rc);
 
                // Wait for exclusive access to hardware
                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);
 
                // Done with exclusive hardware access
                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.
 
                                // Wait for exclusive access to hardware
                                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);
 
                                // Done with exclusive hardware access
                                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.
 
                                // Wait for exclusive access to hardware
                                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);
 
                                // Done with exclusive hardware access
                                up(&ctrl->crit_sect);
 
                                return(rc);
                        }
                        // Done configuring so turn LED on full time
 
                        // Wait for exclusive access to hardware
                        down(&ctrl->crit_sect);
 
                        green_LED_on (ctrl, hp_slot);
 
                        set_SOGO(ctrl);
 
                        // Wait for SOBS to be unset
                        wait_for_ctrl_irq (ctrl);
 
                        // Done with exclusive hardware access
                        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.
 
                        // Wait for exclusive access to hardware
                        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);
 
                        // Done with exclusive hardware access
                        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);
 
        // Wait for exclusive access to hardware
        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);
 
        // 66MHz and/or PCI-X support check
        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);
 
        // Done with exclusive hardware access
        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
 
        // Wait for exclusive access to hardware
        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__);
 
        // Done with exclusive hardware access
        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
                rc = pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, 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) {
                        // Wait for exclusive access to hardware
                        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);
 
                        // Done with exclusive hardware access
                        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);
 
                // Wait for exclusive access to hardware
                down(&ctrl->crit_sect);
 
                green_LED_on (ctrl, hp_slot);
 
                set_SOGO(ctrl);
 
                // Wait for SOBS to be unset
                wait_for_ctrl_irq (ctrl);
 
                // Done with exclusive hardware access
                up(&ctrl->crit_sect);
        } else {
                // Wait for exclusive access to hardware
                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);
 
                // Done with exclusive hardware access
                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 (func == NULL)
                return(1);
 
        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;
 
        // Wait for exclusive access to hardware
        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);
 
        // Done with exclusive hardware access
        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) {
                        // Out of memory
                        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();
        reparent_to_init();
 
        //  New name
        strcpy(current->comm, "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, 0, 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;
        char buffer[SLOT_NAME_SIZE];
        int result;
 
        info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
        if (!info)
                return -ENOMEM;
 
        make_slot_name (&buffer[0], SLOT_NAME_SIZE, slot);
        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(buffer, 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);
 
                                p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
 
                                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);
 
                                        // Wait for exclusive access to hardware
                                        down(&ctrl->crit_sect);
 
                                        if (p_slot->state == BLINKINGOFF_STATE) {
                                                // slot is on
                                                // turn on green LED
                                                dbg("turn on green LED\n");
                                                green_LED_on (ctrl, hp_slot);
                                        } else if (p_slot->state == BLINKINGON_STATE) {
                                                // slot is off
                                                // turn off green LED
                                                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);
 
                                        // Done with exclusive hardware access
                                        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)) {
                                                // slot is on
                                                dbg("slot is on\n");
                                                p_slot->state = BLINKINGOFF_STATE;
                                                info(msg_button_off, p_slot->number);
                                        } else {
                                                // slot is off
                                                dbg("slot is off\n");
                                                p_slot->state = BLINKINGON_STATE;
                                                info(msg_button_on, p_slot->number);
                                        }
                                        // Wait for exclusive access to hardware
                                        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);
 
                                        // Done with exclusive hardware access
                                        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;
 
        if (!ctrl)
                return(1);
 
        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) {
                                // Out of memory
                                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;
        struct slot* p_slot;
        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) {
                // Check the Class Code
                rc = pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, 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_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, 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_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, 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);
}
 
 
 
/**
 * hardware_test - runs hardware tests
 *
 * For hot plug ctrl folks to play with.
 * test_num is the number entered in the GUI
 *
 */
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
                        save_LED = readl(ctrl->hpc_reg + LED_CONTROL);  // so we can restore them later
                        work_LED = 0x01010101;
                        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
                                work_LED = work_LED << 1;
                                writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
                                long_delay((2*HZ)/10);
                        }
                        for (loop = 0; loop < num_of_slots; loop++) {
                                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);
                        }
                        for (loop = 0; loop < num_of_slots; loop++) {
                                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);
                        }
                        for (loop = 0; loop < num_of_slots; loop++) {
                                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);
                        }
 
                        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
                                work_LED = work_LED << 1;
                                writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
                                long_delay((2*HZ)/10);
                        }
                        for (loop = 0; loop < num_of_slots; loop++) {
                                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);
                        }
                        work_LED = 0x00000101;
                        writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
                        for (loop = 0; loop < num_of_slots; loop++) {
                                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);
                        }
                        for (loop = 0; loop < num_of_slots; loop++) {
                                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);
                        }
 
 
                        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);
                        }
 
                        writel (save_LED, ctrl->hpc_reg + LED_CONTROL); // put it back the way it was
 
                        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
        rc = pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, 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_read_config_dword_nodev (ctrl->pci_ops, func->bus, 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) {
                                        // Out of memory
                                        return(1);
                                }
 
                                new_slot->bus = func->bus;
                                new_slot->device = func->device;
                                new_slot->function = function;
                                new_slot->is_a_board = 1;
                                new_slot->status = 0;
 
                                stop_it++;
                        }
                }
 
        } while (function < max_functions);
        dbg("returning from 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;
        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;
        struct pci_resource *mem_node;
        struct pci_resource *p_mem_node;
        struct pci_resource *io_node;
        struct pci_resource *bus_node;
        struct pci_resource *hold_mem_node;
        struct pci_resource *hold_p_mem_node;
        struct pci_resource *hold_IO_node;
        struct pci_resource *hold_bus_node;
        struct irq_mapping irqs;
        struct pci_func *new_slot;
        struct resource_lists temp_resources;
 
        // Check for Bridge
        rc = pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_SUBORDINATE_BUS, temp_byte);
                if (rc)
                        return rc;
 
                // set subordinate Latency Timer and base Latency Timer
                temp_byte = 0x40;
                rc = pci_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_SEC_LATENCY_TIMER, temp_byte);
                if (rc)
                        return rc;
                rc = pci_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_LATENCY_TIMER, temp_byte);
                if (rc)
                        return rc;
 
                // set Cache Line size
                temp_byte = 0x08;
                rc = pci_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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);
                mem_node = get_max_resource(&(resources->mem_head), 0x100000);
                p_mem_node = get_max_resource(&(resources->p_mem_head), 0x100000);
                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 = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
                hold_IO_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
                hold_mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
                hold_p_mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
 
                if (!hold_bus_node || !hold_IO_node || !hold_mem_node || !hold_p_mem_node) {
                        if (hold_bus_node)
                                kfree(hold_bus_node);
                        if (hold_IO_node)
                                kfree(hold_IO_node);
                        if (hold_mem_node)
                                kfree(hold_mem_node);
                        if (hold_p_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_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_IO_BASE, temp_byte);
 
                        temp_byte = (io_node->base + io_node->length - 1) >> 8;
                        rc = pci_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_MEMORY_BASE, temp_word);
 
                        temp_word = (mem_node->base + mem_node->length - 1) >> 16;
                        rc = pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_MEMORY_LIMIT, temp_word);
                } else {
                        temp_word = 0xFFFF;
                        rc = pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_MEMORY_BASE, temp_word);
 
                        temp_word = 0x0000;
                        rc = pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_PREF_MEMORY_BASE, temp_word);
 
                        temp_word = (p_mem_node->base + p_mem_node->length - 1) >> 16;
                        rc = pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_PREF_MEMORY_LIMIT, temp_word);
                } else {
                        temp_word = 0xFFFF;
                        rc = pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_PREF_MEMORY_BASE, temp_word);
 
                        temp_word = 0x0000;
                        rc = pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_read_config_dword_nodev (ctrl->pci_ops, hold_bus_node->base, device, 0, 0x00, &ID);
 
                        if (ID != 0xFFFFFFFF) {   //  device Present
                                // Setup slot structure.
                                new_slot = cpqhp_slot_create(hold_bus_node->base);
 
                                if (new_slot == NULL) {
                                        // Out of memory
                                        rc = -ENOMEM;
                                        continue;
                                }
 
                                new_slot->bus = hold_bus_node->base;
                                new_slot->device = device;
                                new_slot->function = 0;
                                new_slot->is_a_board = 1;
                                new_slot->status = 0;
 
                                rc = configure_new_device(ctrl, new_slot, 1, &temp_resources);
                                dbg("configure_new_device rc=0x%x\n",rc);
                        }       // End of IF (device in slot?)
                }               // End of FOR loop
 
                if (rc) {
                        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);
                }
                // 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) {
                                                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;
                                        }
                                }
                        }       // 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_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_IO_LIMIT, temp_byte);
 
                                        return_resource(&(resources->io_head), io_node);
                                } else {
                                        // it doesn't need any IO
                                        temp_word = 0x0000;
                                        pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_COMMAND, command);
 
                // set Bridge Control Register
                command = 0x07;         // = PCI_BRIDGE_CTL_PARITY | PCI_BRIDGE_CTL_SERR | PCI_BRIDGE_CTL_NO_ISA
                rc = pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_BRIDGE_CONTROL, command);
        } else if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
                // Standard device
                rc = pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, 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, device=%d, func=%d, offset=%d\n", func->bus, func->device, func->function, cloop);
                        rc = pci_write_config_dword_nodev(ctrl->pci_ops, func->bus, func->device, func->function, cloop, temp_register);
 
                        rc = pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_dword_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_dword_nodev(ctrl->pci_ops, func->bus, func->device, func->function, cloop, base);
                                }
                        }
                }               // End of base register loop
 
                // Figure out which interrupt pin this function uses
                rc = pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, 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_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, 0x0B, &class_code);
 
                        if (class_code == PCI_BASE_CLASS_STORAGE) {
                                IRQ = cpqhp_disk_irq;
                        } else {
                                IRQ = cpqhp_nic_irq;
                        }
                }
 
                // IRQ Line
                rc = pci_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_LATENCY_TIMER, temp_byte);
 
                // Cache Line size
                temp_byte = 0x08;
                rc = pci_write_config_byte_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_CACHE_LINE_SIZE, temp_byte);
 
                // disable ROM base Address
                temp_dword = 0x00L;
                rc = pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, 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_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_COMMAND, temp_word);
        }                       // End of Not-A-Bridge else
        else {
                // It's some strange type of PCI adapter (Cardbus?)
                return(DEVICE_TYPE_NOT_SUPPORTED);
        }
 
        func->configured = 1;
 
        return 0;
}
 
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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [hotplug/] [cpqphp_ctrl.c] - Blame information for rev 1774

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* Compaq Hot Plug Controller Driver`
3			`*`
4			`* Copyright (C) 1995,2001 Compaq Computer Corporation`
5			`* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)`
6			`* Copyright (C) 2001 IBM Corp.`
7			`*`
8			`* All rights reserved.`
9			`*`
10			`* This program is free software; you can redistribute it and/or modify`
11			`* it under the terms of the GNU General Public License as published by`
12			`* the Free Software Foundation; either version 2 of the License, or (at`
13			`* your option) any later version.`
14			`*`
15			`* This program is distributed in the hope that it will be useful, but`
16			`* WITHOUT ANY WARRANTY; without even the implied warranty of`
17			`* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or`
18			`* NON INFRINGEMENT. See the GNU General Public License for more`
19			`* details.`
20			`*`
21			`* You should have received a copy of the GNU General Public License`
22			`* along with this program; if not, write to the Free Software`
23			`* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.`
24			`*`
25			`* Send feedback to <greg@kroah.com>`
26			`*`
27			`*/`
28
29			`#include <linux/config.h>`
30			`#include <linux/module.h>`
31			`#include <linux/kernel.h>`
32			`#include <linux/types.h>`
33			`#include <linux/slab.h>`
34			`#include <linux/interrupt.h>`
35			`#include <linux/delay.h>`
36			`#include <linux/wait.h>`
37			`#include <linux/smp_lock.h>`
38			`#include <linux/pci.h>`
39			`#include "cpqphp.h"`
40