Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

drivers/pnp/Kconfig

@@ -0,0 +1,41 @@
+#
+# Plug and Play configuration
+#
+
+menu "Plug and Play support"
+
+config PNP
+	bool "Plug and Play support"
+	depends on ISA || ACPI_BUS
+	---help---
+	  Plug and Play (PnP) is a standard for peripherals which allows those
+	  peripherals to be configured by software, e.g. assign IRQ's or other
+	  parameters. No jumpers on the cards are needed, instead the values
+	  are provided to the cards from the BIOS, from the operating system,
+	  or using a user-space utility.
+
+	  Say Y here if you would like Linux to configure your Plug and Play
+	  devices. You should then also say Y to all of the protocols below.
+	  Alternatively, you can say N here and configure your PnP devices
+	  using user space utilities such as the isapnptools package.
+
+	  If unsure, say Y.
+
+config PNP_DEBUG
+	bool "PnP Debug Messages"
+	depends on PNP
+	help
+	  Say Y if you want the Plug and Play Layer to print debug messages.
+	  This is useful if you are developing a PnP driver or troubleshooting.
+
+comment "Protocols"
+	depends on PNP
+
+source "drivers/pnp/isapnp/Kconfig"
+
+source "drivers/pnp/pnpbios/Kconfig"
+
+source "drivers/pnp/pnpacpi/Kconfig"
+
+endmenu
+

drivers/pnp/Makefile

@@ -0,0 +1,9 @@
+#
+# Makefile for the Linux Plug-and-Play Support.
+#
+
+obj-y		:= core.o card.o driver.o resource.o manager.o support.o interface.o quirks.o system.o
+
+obj-$(CONFIG_PNPACPI)		+= pnpacpi/
+obj-$(CONFIG_PNPBIOS)		+= pnpbios/
+obj-$(CONFIG_ISAPNP)		+= isapnp/

drivers/pnp/base.h

@@ -0,0 +1,13 @@
+extern struct bus_type pnp_bus_type;
+extern spinlock_t pnp_lock;
+void *pnp_alloc(long size);
+int pnp_interface_attach_device(struct pnp_dev *dev);
+void pnp_fixup_device(struct pnp_dev *dev);
+void pnp_free_option(struct pnp_option *option);
+int __pnp_add_device(struct pnp_dev *dev);
+void __pnp_remove_device(struct pnp_dev *dev);
+
+int pnp_check_port(struct pnp_dev * dev, int idx);
+int pnp_check_mem(struct pnp_dev * dev, int idx);
+int pnp_check_irq(struct pnp_dev * dev, int idx);
+int pnp_check_dma(struct pnp_dev * dev, int idx);

drivers/pnp/card.c

@@ -0,0 +1,391 @@
+/*
+ * card.c - contains functions for managing groups of PnP devices
+ *
+ * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#ifdef CONFIG_PNP_DEBUG
+	#define DEBUG
+#else
+	#undef DEBUG
+#endif
+
+#include <linux/pnp.h>
+#include "base.h"
+
+LIST_HEAD(pnp_cards);
+LIST_HEAD(pnp_card_drivers);
+
+
+static const struct pnp_card_device_id * match_card(struct pnp_card_driver * drv, struct pnp_card * card)
+{
+	const struct pnp_card_device_id * drv_id = drv->id_table;
+	while (*drv_id->id){
+		if (compare_pnp_id(card->id,drv_id->id)) {
+			int i = 0;
+			for (;;) {
+				int found;
+				struct pnp_dev *dev;
+				if (i == PNP_MAX_DEVICES || ! *drv_id->devs[i].id)
+					return drv_id;
+				found = 0;
+				card_for_each_dev(card, dev) {
+					if (compare_pnp_id(dev->id, drv_id->devs[i].id)) {
+						found = 1;
+						break;
+					}
+				}
+				if (! found)
+					break;
+				i++;
+			}
+		}
+		drv_id++;
+	}
+	return NULL;
+}
+
+static void card_remove(struct pnp_dev * dev)
+{
+	dev->card_link = NULL;
+}
+ 
+static void card_remove_first(struct pnp_dev * dev)
+{
+	struct pnp_card_driver * drv = to_pnp_card_driver(dev->driver);
+	if (!dev->card || !drv)
+		return;
+	if (drv->remove)
+		drv->remove(dev->card_link);
+	drv->link.remove = &card_remove;
+	kfree(dev->card_link);
+	card_remove(dev);
+}
+
+static int card_probe(struct pnp_card * card, struct pnp_card_driver * drv)
+{
+	const struct pnp_card_device_id *id = match_card(drv,card);
+	if (id) {
+		struct pnp_card_link * clink = pnp_alloc(sizeof(struct pnp_card_link));
+		if (!clink)
+			return 0;
+		clink->card = card;
+		clink->driver = drv;
+		if (drv->probe) {
+			if (drv->probe(clink, id)>=0)
+				return 1;
+			else {
+				struct pnp_dev * dev;
+				card_for_each_dev(card, dev) {
+					if (dev->card_link == clink)
+						pnp_release_card_device(dev);
+				}
+				kfree(clink);
+			}
+		} else
+			return 1;
+	}
+	return 0;
+}
+
+/**
+ * pnp_add_card_id - adds an EISA id to the specified card
+ * @id: pointer to a pnp_id structure
+ * @card: pointer to the desired card
+ *
+ */
+
+int pnp_add_card_id(struct pnp_id *id, struct pnp_card * card)
+{
+	struct pnp_id * ptr;
+	if (!id)
+		return -EINVAL;
+	if (!card)
+		return -EINVAL;
+	id->next = NULL;
+	ptr = card->id;
+	while (ptr && ptr->next)
+		ptr = ptr->next;
+	if (ptr)
+		ptr->next = id;
+	else
+		card->id = id;
+	return 0;
+}
+
+static void pnp_free_card_ids(struct pnp_card * card)
+{
+	struct pnp_id * id;
+	struct pnp_id *next;
+	if (!card)
+		return;
+	id = card->id;
+	while (id) {
+		next = id->next;
+		kfree(id);
+		id = next;
+	}
+}
+
+static void pnp_release_card(struct device *dmdev)
+{
+	struct pnp_card * card = to_pnp_card(dmdev);
+	pnp_free_card_ids(card);
+	kfree(card);
+}
+
+
+static ssize_t pnp_show_card_name(struct device *dmdev, char *buf)
+{
+	char *str = buf;
+	struct pnp_card *card = to_pnp_card(dmdev);
+	str += sprintf(str,"%s\n", card->name);
+	return (str - buf);
+}
+
+static DEVICE_ATTR(name,S_IRUGO,pnp_show_card_name,NULL);
+
+static ssize_t pnp_show_card_ids(struct device *dmdev, char *buf)
+{
+	char *str = buf;
+	struct pnp_card *card = to_pnp_card(dmdev);
+	struct pnp_id * pos = card->id;
+
+	while (pos) {
+		str += sprintf(str,"%s\n", pos->id);
+		pos = pos->next;
+	}
+	return (str - buf);
+}
+
+static DEVICE_ATTR(card_id,S_IRUGO,pnp_show_card_ids,NULL);
+
+static int pnp_interface_attach_card(struct pnp_card *card)
+{
+	device_create_file(&card->dev,&dev_attr_name);
+	device_create_file(&card->dev,&dev_attr_card_id);
+	return 0;
+}
+
+/**
+ * pnp_add_card - adds a PnP card to the PnP Layer
+ * @card: pointer to the card to add
+ */
+
+int pnp_add_card(struct pnp_card * card)
+{
+	int error;
+	struct list_head * pos, * temp;
+	if (!card || !card->protocol)
+		return -EINVAL;
+
+	sprintf(card->dev.bus_id, "%02x:%02x", card->protocol->number, card->number);
+	card->dev.parent = &card->protocol->dev;
+	card->dev.bus = NULL;
+	card->dev.release = &pnp_release_card;
+	error = device_register(&card->dev);
+
+	if (error == 0) {
+		pnp_interface_attach_card(card);
+		spin_lock(&pnp_lock);
+		list_add_tail(&card->global_list, &pnp_cards);
+		list_add_tail(&card->protocol_list, &card->protocol->cards);
+		spin_unlock(&pnp_lock);
+
+		/* we wait until now to add devices in order to ensure the drivers
+		 * will be able to use all of the related devices on the card
+		 * without waiting any unresonable length of time */
+		list_for_each(pos,&card->devices){
+			struct pnp_dev *dev = card_to_pnp_dev(pos);
+			__pnp_add_device(dev);
+		}
+
+		/* match with card drivers */
+		list_for_each_safe(pos,temp,&pnp_card_drivers){
+			struct pnp_card_driver * drv = list_entry(pos, struct pnp_card_driver, global_list);
+			card_probe(card,drv);
+		}
+	} else
+		pnp_err("sysfs failure, card '%s' will be unavailable", card->dev.bus_id);
+	return error;
+}
+
+/**
+ * pnp_remove_card - removes a PnP card from the PnP Layer
+ * @card: pointer to the card to remove
+ */
+
+void pnp_remove_card(struct pnp_card * card)
+{
+	struct list_head *pos, *temp;
+	if (!card)
+		return;
+	device_unregister(&card->dev);
+	spin_lock(&pnp_lock);
+	list_del(&card->global_list);
+	list_del(&card->protocol_list);
+	spin_unlock(&pnp_lock);
+	list_for_each_safe(pos,temp,&card->devices){
+		struct pnp_dev *dev = card_to_pnp_dev(pos);
+		pnp_remove_card_device(dev);
+	}
+}
+
+/**
+ * pnp_add_card_device - adds a device to the specified card
+ * @card: pointer to the card to add to
+ * @dev: pointer to the device to add
+ */
+
+int pnp_add_card_device(struct pnp_card * card, struct pnp_dev * dev)
+{
+	if (!card || !dev || !dev->protocol)
+		return -EINVAL;
+	dev->dev.parent = &card->dev;
+	dev->card_link = NULL;
+	snprintf(dev->dev.bus_id, BUS_ID_SIZE, "%02x:%02x.%02x", dev->protocol->number,
+		 card->number,dev->number);
+	spin_lock(&pnp_lock);
+	dev->card = card;
+	list_add_tail(&dev->card_list, &card->devices);
+	spin_unlock(&pnp_lock);
+	return 0;
+}
+
+/**
+ * pnp_remove_card_device- removes a device from the specified card
+ * @card: pointer to the card to remove from
+ * @dev: pointer to the device to remove
+ */
+
+void pnp_remove_card_device(struct pnp_dev * dev)
+{
+	spin_lock(&pnp_lock);
+	dev->card = NULL;
+	list_del(&dev->card_list);
+	spin_unlock(&pnp_lock);
+	__pnp_remove_device(dev);
+}
+
+/**
+ * pnp_request_card_device - Searches for a PnP device under the specified card
+ * @lcard: pointer to the card link, cannot be NULL
+ * @id: pointer to a PnP ID structure that explains the rules for finding the device
+ * @from: Starting place to search from. If NULL it will start from the begining.
+ */
+
+struct pnp_dev * pnp_request_card_device(struct pnp_card_link *clink, const char * id, struct pnp_dev * from)
+{
+	struct list_head * pos;
+	struct pnp_dev * dev;
+	struct pnp_card_driver * drv;
+	struct pnp_card * card;
+	if (!clink || !id)
+		goto done;
+	card = clink->card;
+	drv = clink->driver;
+	if (!from) {
+		pos = card->devices.next;
+	} else {
+		if (from->card != card)
+			goto done;
+		pos = from->card_list.next;
+	}
+	while (pos != &card->devices) {
+		dev = card_to_pnp_dev(pos);
+		if ((!dev->card_link) && compare_pnp_id(dev->id,id))
+			goto found;
+		pos = pos->next;
+	}
+
+done:
+	return NULL;
+
+found:
+	down_write(&dev->dev.bus->subsys.rwsem);
+	dev->card_link = clink;
+	dev->dev.driver = &drv->link.driver;
+	if (drv->link.driver.probe) {
+		if (drv->link.driver.probe(&dev->dev)) {
+			dev->dev.driver = NULL;
+			return NULL;
+		}
+	}
+	device_bind_driver(&dev->dev);
+	up_write(&dev->dev.bus->subsys.rwsem);
+
+	return dev;
+}
+
+/**
+ * pnp_release_card_device - call this when the driver no longer needs the device
+ * @dev: pointer to the PnP device stucture
+ */
+
+void pnp_release_card_device(struct pnp_dev * dev)
+{
+	struct pnp_card_driver * drv = dev->card_link->driver;
+	if (!drv)
+		return;
+	down_write(&dev->dev.bus->subsys.rwsem);
+	drv->link.remove = &card_remove;
+	device_release_driver(&dev->dev);
+	drv->link.remove = &card_remove_first;
+	up_write(&dev->dev.bus->subsys.rwsem);
+}
+
+/**
+ * pnp_register_card_driver - registers a PnP card driver with the PnP Layer
+ * @drv: pointer to the driver to register
+ */
+
+int pnp_register_card_driver(struct pnp_card_driver * drv)
+{
+	int count = 0;
+	struct list_head *pos, *temp;
+
+	drv->link.name = drv->name;
+	drv->link.id_table = NULL;	/* this will disable auto matching */
+	drv->link.flags = drv->flags;
+	drv->link.probe = NULL;
+	drv->link.remove = &card_remove_first;
+
+	spin_lock(&pnp_lock);
+	list_add_tail(&drv->global_list, &pnp_card_drivers);
+	spin_unlock(&pnp_lock);
+	pnp_register_driver(&drv->link);
+
+	list_for_each_safe(pos,temp,&pnp_cards){
+		struct pnp_card *card = list_entry(pos, struct pnp_card, global_list);
+		count += card_probe(card,drv);
+	}
+	return count;
+}
+
+/**
+ * pnp_unregister_card_driver - unregisters a PnP card driver from the PnP Layer
+ * @drv: pointer to the driver to unregister
+ */
+
+void pnp_unregister_card_driver(struct pnp_card_driver * drv)
+{
+	spin_lock(&pnp_lock);
+	list_del(&drv->global_list);
+	spin_unlock(&pnp_lock);
+	pnp_unregister_driver(&drv->link);
+}
+
+EXPORT_SYMBOL(pnp_add_card);
+EXPORT_SYMBOL(pnp_remove_card);
+EXPORT_SYMBOL(pnp_add_card_device);
+EXPORT_SYMBOL(pnp_remove_card_device);
+EXPORT_SYMBOL(pnp_add_card_id);
+EXPORT_SYMBOL(pnp_request_card_device);
+EXPORT_SYMBOL(pnp_release_card_device);
+EXPORT_SYMBOL(pnp_register_card_driver);
+EXPORT_SYMBOL(pnp_unregister_card_driver);

drivers/pnp/core.c

@@ -0,0 +1,180 @@
+/*
+ * core.c - contains all core device and protocol registration functions
+ *
+ * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+
+#include <linux/pnp.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/errno.h>
+
+#include "base.h"
+
+
+static LIST_HEAD(pnp_protocols);
+LIST_HEAD(pnp_global);
+DEFINE_SPINLOCK(pnp_lock);
+
+void *pnp_alloc(long size)
+{
+	void *result;
+
+	result = kmalloc(size, GFP_KERNEL);
+	if (!result){
+		printk(KERN_ERR "pnp: Out of Memory\n");
+		return NULL;
+	}
+	memset(result, 0, size);
+	return result;
+}
+
+/**
+ * pnp_protocol_register - adds a pnp protocol to the pnp layer
+ * @protocol: pointer to the corresponding pnp_protocol structure
+ *
+ *  Ex protocols: ISAPNP, PNPBIOS, etc
+ */
+
+int pnp_register_protocol(struct pnp_protocol *protocol)
+{
+	int nodenum;
+	struct list_head * pos;
+
+	if (!protocol)
+		return -EINVAL;
+
+	INIT_LIST_HEAD(&protocol->devices);
+	INIT_LIST_HEAD(&protocol->cards);
+	nodenum = 0;
+	spin_lock(&pnp_lock);
+
+	/* assign the lowest unused number */
+	list_for_each(pos,&pnp_protocols) {
+		struct pnp_protocol * cur = to_pnp_protocol(pos);
+		if (cur->number == nodenum){
+			pos = &pnp_protocols;
+			nodenum++;
+		}
+	}
+
+	list_add_tail(&protocol->protocol_list, &pnp_protocols);
+	spin_unlock(&pnp_lock);
+
+	protocol->number = nodenum;
+	sprintf(protocol->dev.bus_id, "pnp%d", nodenum);
+	return device_register(&protocol->dev);
+}
+
+/**
+ * pnp_protocol_unregister - removes a pnp protocol from the pnp layer
+ * @protocol: pointer to the corresponding pnp_protocol structure
+ *
+ */
+void pnp_unregister_protocol(struct pnp_protocol *protocol)
+{
+	spin_lock(&pnp_lock);
+	list_del(&protocol->protocol_list);
+	spin_unlock(&pnp_lock);
+	device_unregister(&protocol->dev);
+}
+
+
+static void pnp_free_ids(struct pnp_dev *dev)
+{
+	struct pnp_id * id;
+	struct pnp_id * next;
+	if (!dev)
+		return;
+	id = dev->id;
+	while (id) {
+		next = id->next;
+		kfree(id);
+		id = next;
+	}
+}
+
+static void pnp_release_device(struct device *dmdev)
+{
+	struct pnp_dev * dev = to_pnp_dev(dmdev);
+	pnp_free_option(dev->independent);
+	pnp_free_option(dev->dependent);
+	pnp_free_ids(dev);
+	kfree(dev);
+}
+
+int __pnp_add_device(struct pnp_dev *dev)
+{
+	int ret;
+	pnp_fixup_device(dev);
+	dev->dev.bus = &pnp_bus_type;
+	dev->dev.release = &pnp_release_device;
+	dev->status = PNP_READY;
+	spin_lock(&pnp_lock);
+	list_add_tail(&dev->global_list, &pnp_global);
+	list_add_tail(&dev->protocol_list, &dev->protocol->devices);
+	spin_unlock(&pnp_lock);
+
+	ret = device_register(&dev->dev);
+	if (ret == 0)
+		pnp_interface_attach_device(dev);
+	return ret;
+}
+
+/*
+ * pnp_add_device - adds a pnp device to the pnp layer
+ * @dev: pointer to dev to add
+ *
+ *  adds to driver model, name database, fixups, interface, etc.
+ */
+
+int pnp_add_device(struct pnp_dev *dev)
+{
+	if (!dev || !dev->protocol || dev->card)
+		return -EINVAL;
+	dev->dev.parent = &dev->protocol->dev;
+	sprintf(dev->dev.bus_id, "%02x:%02x", dev->protocol->number, dev->number);
+	return __pnp_add_device(dev);
+}
+
+void __pnp_remove_device(struct pnp_dev *dev)
+{
+	spin_lock(&pnp_lock);
+	list_del(&dev->global_list);
+	list_del(&dev->protocol_list);
+	spin_unlock(&pnp_lock);
+	device_unregister(&dev->dev);
+}
+
+/**
+ * pnp_remove_device - removes a pnp device from the pnp layer
+ * @dev: pointer to dev to add
+ *
+ * this function will free all mem used by dev
+ */
+
+void pnp_remove_device(struct pnp_dev *dev)
+{
+	if (!dev || dev->card)
+		return;
+	__pnp_remove_device(dev);
+}
+
+static int __init pnp_init(void)
+{
+	printk(KERN_INFO "Linux Plug and Play Support v0.97 (c) Adam Belay\n");
+	return bus_register(&pnp_bus_type);
+}
+
+subsys_initcall(pnp_init);
+
+EXPORT_SYMBOL(pnp_register_protocol);
+EXPORT_SYMBOL(pnp_unregister_protocol);
+EXPORT_SYMBOL(pnp_add_device);
+EXPORT_SYMBOL(pnp_remove_device);

drivers/pnp/driver.c

@@ -0,0 +1,222 @@
+/*
+ * driver.c - device id matching, driver model, etc.
+ *
+ * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/string.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/slab.h>
+
+#ifdef CONFIG_PNP_DEBUG
+	#define DEBUG
+#else
+	#undef DEBUG
+#endif
+
+#include <linux/pnp.h>
+#include "base.h"
+
+static int compare_func(const char *ida, const char *idb)
+{
+	int i;
+	/* we only need to compare the last 4 chars */
+	for (i=3; i<7; i++)
+	{
+		if (ida[i] != 'X' &&
+		    idb[i] != 'X' &&
+		    toupper(ida[i]) != toupper(idb[i]))
+			return 0;
+	}
+	return 1;
+}
+
+int compare_pnp_id(struct pnp_id *pos, const char *id)
+{
+	if (!pos || !id || (strlen(id) != 7))
+		return 0;
+	if (memcmp(id,"ANYDEVS",7)==0)
+		return 1;
+	while (pos){
+		if (memcmp(pos->id,id,3)==0)
+			if (compare_func(pos->id,id)==1)
+				return 1;
+		pos = pos->next;
+	}
+	return 0;
+}
+
+static const struct pnp_device_id * match_device(struct pnp_driver *drv, struct pnp_dev *dev)
+{
+	const struct pnp_device_id *drv_id = drv->id_table;
+	if (!drv_id)
+		return NULL;
+
+	while (*drv_id->id) {
+		if (compare_pnp_id(dev->id, drv_id->id))
+			return drv_id;
+		drv_id++;
+	}
+	return NULL;
+}
+
+int pnp_device_attach(struct pnp_dev *pnp_dev)
+{
+	spin_lock(&pnp_lock);
+	if(pnp_dev->status != PNP_READY){
+		spin_unlock(&pnp_lock);
+		return -EBUSY;
+	}
+	pnp_dev->status = PNP_ATTACHED;
+	spin_unlock(&pnp_lock);
+	return 0;
+}
+
+void pnp_device_detach(struct pnp_dev *pnp_dev)
+{
+	spin_lock(&pnp_lock);
+	if (pnp_dev->status == PNP_ATTACHED)
+		pnp_dev->status = PNP_READY;
+	spin_unlock(&pnp_lock);
+	pnp_disable_dev(pnp_dev);
+}
+
+static int pnp_device_probe(struct device *dev)
+{
+	int error;
+	struct pnp_driver *pnp_drv;
+	struct pnp_dev *pnp_dev;
+	const struct pnp_device_id *dev_id = NULL;
+	pnp_dev = to_pnp_dev(dev);
+	pnp_drv = to_pnp_driver(dev->driver);
+
+	pnp_dbg("match found with the PnP device '%s' and the driver '%s'", dev->bus_id,pnp_drv->name);
+
+	error = pnp_device_attach(pnp_dev);
+	if (error < 0)
+		return error;
+
+	if (pnp_dev->active == 0) {
+		if (!(pnp_drv->flags & PNP_DRIVER_RES_DO_NOT_CHANGE)) {
+			error = pnp_activate_dev(pnp_dev);
+			if (error < 0)
+				return error;
+		}
+	} else if ((pnp_drv->flags & PNP_DRIVER_RES_DISABLE)
+		    == PNP_DRIVER_RES_DISABLE) {
+		error = pnp_disable_dev(pnp_dev);
+		if (error < 0)
+			return error;
+	}
+	error = 0;
+	if (pnp_drv->probe) {
+		dev_id = match_device(pnp_drv, pnp_dev);
+		if (dev_id != NULL)
+			error = pnp_drv->probe(pnp_dev, dev_id);
+	}
+	if (error >= 0){
+		pnp_dev->driver = pnp_drv;
+		error = 0;
+	} else
+		goto fail;
+	return error;
+
+fail:
+	pnp_device_detach(pnp_dev);
+	return error;
+}
+
+static int pnp_device_remove(struct device *dev)
+{
+	struct pnp_dev * pnp_dev = to_pnp_dev(dev);
+	struct pnp_driver * drv = pnp_dev->driver;
+
+	if (drv) {
+		if (drv->remove)
+			drv->remove(pnp_dev);
+		pnp_dev->driver = NULL;
+	}
+	pnp_device_detach(pnp_dev);
+	return 0;
+}
+
+static int pnp_bus_match(struct device *dev, struct device_driver *drv)
+{
+	struct pnp_dev * pnp_dev = to_pnp_dev(dev);
+	struct pnp_driver * pnp_drv = to_pnp_driver(drv);
+	if (match_device(pnp_drv, pnp_dev) == NULL)
+		return 0;
+	return 1;
+}
+
+
+struct bus_type pnp_bus_type = {
+	.name	= "pnp",
+	.match	= pnp_bus_match,
+};
+
+
+int pnp_register_driver(struct pnp_driver *drv)
+{
+	int count;
+	struct list_head *pos;
+
+	pnp_dbg("the driver '%s' has been registered", drv->name);
+
+	drv->driver.name = drv->name;
+	drv->driver.bus = &pnp_bus_type;
+	drv->driver.probe = pnp_device_probe;
+	drv->driver.remove = pnp_device_remove;
+
+	count = driver_register(&drv->driver);
+
+	/* get the number of initial matches */
+	if (count >= 0){
+		count = 0;
+		list_for_each(pos,&drv->driver.devices){
+			count++;
+		}
+	}
+	return count;
+}
+
+void pnp_unregister_driver(struct pnp_driver *drv)
+{
+	driver_unregister(&drv->driver);
+	pnp_dbg("the driver '%s' has been unregistered", drv->name);
+}
+
+/**
+ * pnp_add_id - adds an EISA id to the specified device
+ * @id: pointer to a pnp_id structure
+ * @dev: pointer to the desired device
+ *
+ */
+
+int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev)
+{
+	struct pnp_id *ptr;
+	if (!id)
+		return -EINVAL;
+	if (!dev)
+		return -EINVAL;
+	id->next = NULL;
+	ptr = dev->id;
+	while (ptr && ptr->next)
+		ptr = ptr->next;
+	if (ptr)
+		ptr->next = id;
+	else
+		dev->id = id;
+	return 0;
+}
+
+EXPORT_SYMBOL(pnp_register_driver);
+EXPORT_SYMBOL(pnp_unregister_driver);
+EXPORT_SYMBOL(pnp_add_id);
+EXPORT_SYMBOL(pnp_device_attach);
+EXPORT_SYMBOL(pnp_device_detach);

drivers/pnp/interface.c

@@ -0,0 +1,468 @@
+/*
+ * interface.c - contains everything related to the user interface
+ *
+ * Some code, especially possible resource dumping is based on isapnp_proc.c (c) Jaroslav Kysela <perex@suse.cz>
+ * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+
+#include <linux/pnp.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/types.h>
+#include <linux/stat.h>
+#include <linux/ctype.h>
+#include <linux/slab.h>
+#include <asm/uaccess.h>
+
+#include "base.h"
+
+struct pnp_info_buffer {
+	char *buffer;		/* pointer to begin of buffer */
+	char *curr;		/* current position in buffer */
+	unsigned long size;	/* current size */
+	unsigned long len;	/* total length of buffer */
+	int stop;		/* stop flag */
+	int error;		/* error code */
+};
+
+typedef struct pnp_info_buffer pnp_info_buffer_t;
+
+static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt,...)
+{
+	va_list args;
+	int res;
+
+	if (buffer->stop || buffer->error)
+		return 0;
+	va_start(args, fmt);
+	res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args);
+	va_end(args);
+	if (buffer->size + res >= buffer->len) {
+		buffer->stop = 1;
+		return 0;
+	}
+	buffer->curr += res;
+	buffer->size += res;
+	return res;
+}
+
+static void pnp_print_port(pnp_info_buffer_t *buffer, char *space, struct pnp_port *port)
+{
+	pnp_printf(buffer, "%sport 0x%x-0x%x, align 0x%x, size 0x%x, %i-bit address decoding\n",
+			space, port->min, port->max, port->align ? (port->align-1) : 0, port->size,
+			port->flags & PNP_PORT_FLAG_16BITADDR ? 16 : 10);
+}
+
+static void pnp_print_irq(pnp_info_buffer_t *buffer, char *space, struct pnp_irq *irq)
+{
+	int first = 1, i;
+
+	pnp_printf(buffer, "%sirq ", space);
+	for (i = 0; i < PNP_IRQ_NR; i++)
+		if (test_bit(i, irq->map)) {
+			if (!first) {
+				pnp_printf(buffer, ",");
+			} else {
+				first = 0;
+			}
+			if (i == 2 || i == 9)
+				pnp_printf(buffer, "2/9");
+			else
+				pnp_printf(buffer, "%i", i);
+		}
+	if (bitmap_empty(irq->map, PNP_IRQ_NR))
+		pnp_printf(buffer, "<none>");
+	if (irq->flags & IORESOURCE_IRQ_HIGHEDGE)
+		pnp_printf(buffer, " High-Edge");
+	if (irq->flags & IORESOURCE_IRQ_LOWEDGE)
+		pnp_printf(buffer, " Low-Edge");
+	if (irq->flags & IORESOURCE_IRQ_HIGHLEVEL)
+		pnp_printf(buffer, " High-Level");
+	if (irq->flags & IORESOURCE_IRQ_LOWLEVEL)
+		pnp_printf(buffer, " Low-Level");
+	pnp_printf(buffer, "\n");
+}
+
+static void pnp_print_dma(pnp_info_buffer_t *buffer, char *space, struct pnp_dma *dma)
+{
+	int first = 1, i;
+	char *s;
+
+	pnp_printf(buffer, "%sdma ", space);
+	for (i = 0; i < 8; i++)
+		if (dma->map & (1<<i)) {
+			if (!first) {
+				pnp_printf(buffer, ",");
+			} else {
+				first = 0;
+			}
+			pnp_printf(buffer, "%i", i);
+		}
+	if (!dma->map)
+		pnp_printf(buffer, "<none>");
+	switch (dma->flags & IORESOURCE_DMA_TYPE_MASK) {
+	case IORESOURCE_DMA_8BIT:
+		s = "8-bit";
+		break;
+	case IORESOURCE_DMA_8AND16BIT:
+		s = "8-bit&16-bit";
+		break;
+	default:
+		s = "16-bit";
+	}
+	pnp_printf(buffer, " %s", s);
+	if (dma->flags & IORESOURCE_DMA_MASTER)
+		pnp_printf(buffer, " master");
+	if (dma->flags & IORESOURCE_DMA_BYTE)
+		pnp_printf(buffer, " byte-count");
+	if (dma->flags & IORESOURCE_DMA_WORD)
+		pnp_printf(buffer, " word-count");
+	switch (dma->flags & IORESOURCE_DMA_SPEED_MASK) {
+	case IORESOURCE_DMA_TYPEA:
+		s = "type-A";
+		break;
+	case IORESOURCE_DMA_TYPEB:
+		s = "type-B";
+		break;
+	case IORESOURCE_DMA_TYPEF:
+		s = "type-F";
+		break;
+	default:
+		s = "compatible";
+		break;
+	}
+	pnp_printf(buffer, " %s\n", s);
+}
+
+static void pnp_print_mem(pnp_info_buffer_t *buffer, char *space, struct pnp_mem *mem)
+{
+	char *s;
+
+	pnp_printf(buffer, "%sMemory 0x%x-0x%x, align 0x%x, size 0x%x",
+			space, mem->min, mem->max, mem->align, mem->size);
+	if (mem->flags & IORESOURCE_MEM_WRITEABLE)
+		pnp_printf(buffer, ", writeable");
+	if (mem->flags & IORESOURCE_MEM_CACHEABLE)
+		pnp_printf(buffer, ", cacheable");
+	if (mem->flags & IORESOURCE_MEM_RANGELENGTH)
+		pnp_printf(buffer, ", range-length");
+	if (mem->flags & IORESOURCE_MEM_SHADOWABLE)
+		pnp_printf(buffer, ", shadowable");
+	if (mem->flags & IORESOURCE_MEM_EXPANSIONROM)
+		pnp_printf(buffer, ", expansion ROM");
+	switch (mem->flags & IORESOURCE_MEM_TYPE_MASK) {
+	case IORESOURCE_MEM_8BIT:
+		s = "8-bit";
+		break;
+	case IORESOURCE_MEM_8AND16BIT:
+		s = "8-bit&16-bit";
+		break;
+	case IORESOURCE_MEM_32BIT:
+		s = "32-bit";
+		break;
+	default:
+		s = "16-bit";
+	}
+	pnp_printf(buffer, ", %s\n", s);
+}
+
+static void pnp_print_option(pnp_info_buffer_t *buffer, char *space,
+			     struct pnp_option *option, int dep)
+{
+	char *s;
+	struct pnp_port *port;
+	struct pnp_irq *irq;
+	struct pnp_dma *dma;
+	struct pnp_mem *mem;
+
+	if (dep) {
+		switch (option->priority) {
+			case PNP_RES_PRIORITY_PREFERRED:
+			s = "preferred";
+			break;
+			case PNP_RES_PRIORITY_ACCEPTABLE:
+			s = "acceptable";
+			break;
+			case PNP_RES_PRIORITY_FUNCTIONAL:
+			s = "functional";
+			break;
+			default:
+			s = "invalid";
+		}
+		pnp_printf(buffer, "Dependent: %02i - Priority %s\n",dep, s);
+	}
+
+	for (port = option->port; port; port = port->next)
+		pnp_print_port(buffer, space, port);
+	for (irq = option->irq; irq; irq = irq->next)
+		pnp_print_irq(buffer, space, irq);
+	for (dma = option->dma; dma; dma = dma->next)
+		pnp_print_dma(buffer, space, dma);
+	for (mem = option->mem; mem; mem = mem->next)
+		pnp_print_mem(buffer, space, mem);
+}
+
+
+static ssize_t pnp_show_options(struct device *dmdev, char *buf)
+{
+	struct pnp_dev *dev = to_pnp_dev(dmdev);
+	struct pnp_option * independent = dev->independent;
+	struct pnp_option * dependent = dev->dependent;
+	int ret, dep = 1;
+
+	pnp_info_buffer_t *buffer = (pnp_info_buffer_t *)
+				 pnp_alloc(sizeof(pnp_info_buffer_t));
+	if (!buffer)
+		return -ENOMEM;
+
+	buffer->len = PAGE_SIZE;
+	buffer->buffer = buf;
+	buffer->curr = buffer->buffer;
+	if (independent)
+		pnp_print_option(buffer, "", independent, 0);
+
+	while (dependent){
+		pnp_print_option(buffer, "   ", dependent, dep);
+		dependent = dependent->next;
+		dep++;
+	}
+	ret = (buffer->curr - buf);
+	kfree(buffer);
+	return ret;
+}
+
+static DEVICE_ATTR(options,S_IRUGO,pnp_show_options,NULL);
+
+
+static ssize_t pnp_show_current_resources(struct device *dmdev, char *buf)
+{
+	struct pnp_dev *dev = to_pnp_dev(dmdev);
+	int i, ret;
+	pnp_info_buffer_t *buffer;
+
+	if (!dev)
+		return -EINVAL;
+
+	buffer = (pnp_info_buffer_t *) pnp_alloc(sizeof(pnp_info_buffer_t));
+	if (!buffer)
+		return -ENOMEM;
+	buffer->len = PAGE_SIZE;
+	buffer->buffer = buf;
+	buffer->curr = buffer->buffer;
+
+	pnp_printf(buffer,"state = ");
+	if (dev->active)
+		pnp_printf(buffer,"active\n");
+	else
+		pnp_printf(buffer,"disabled\n");
+
+	for (i = 0; i < PNP_MAX_PORT; i++) {
+		if (pnp_port_valid(dev, i)) {
+			pnp_printf(buffer,"io");
+			if (pnp_port_flags(dev, i) & IORESOURCE_DISABLED)
+				pnp_printf(buffer," disabled\n");
+			else
+				pnp_printf(buffer," 0x%lx-0x%lx\n",
+						pnp_port_start(dev, i),
+						pnp_port_end(dev, i));
+		}
+	}
+	for (i = 0; i < PNP_MAX_MEM; i++) {
+		if (pnp_mem_valid(dev, i)) {
+			pnp_printf(buffer,"mem");
+			if (pnp_mem_flags(dev, i) & IORESOURCE_DISABLED)
+				pnp_printf(buffer," disabled\n");
+			else
+				pnp_printf(buffer," 0x%lx-0x%lx\n",
+						pnp_mem_start(dev, i),
+						pnp_mem_end(dev, i));
+		}
+	}
+	for (i = 0; i < PNP_MAX_IRQ; i++) {
+		if (pnp_irq_valid(dev, i)) {
+			pnp_printf(buffer,"irq");
+			if (pnp_irq_flags(dev, i) & IORESOURCE_DISABLED)
+				pnp_printf(buffer," disabled\n");
+			else
+				pnp_printf(buffer," %ld\n",
+						pnp_irq(dev, i));
+		}
+	}
+	for (i = 0; i < PNP_MAX_DMA; i++) {
+		if (pnp_dma_valid(dev, i)) {
+			pnp_printf(buffer,"dma");
+			if (pnp_dma_flags(dev, i) & IORESOURCE_DISABLED)
+				pnp_printf(buffer," disabled\n");
+			else
+				pnp_printf(buffer," %ld\n",
+						pnp_dma(dev, i));
+		}
+	}
+	ret = (buffer->curr - buf);
+	kfree(buffer);
+	return ret;
+}
+
+extern struct semaphore pnp_res_mutex;
+
+static ssize_t
+pnp_set_current_resources(struct device * dmdev, const char * ubuf, size_t count)
+{
+	struct pnp_dev *dev = to_pnp_dev(dmdev);
+	char	*buf = (void *)ubuf;
+	int	retval = 0;
+
+	if (dev->status & PNP_ATTACHED) {
+		retval = -EBUSY;
+		pnp_info("Device %s cannot be configured because it is in use.", dev->dev.bus_id);
+		goto done;
+	}
+
+	while (isspace(*buf))
+		++buf;
+	if (!strnicmp(buf,"disable",7)) {
+		retval = pnp_disable_dev(dev);
+		goto done;
+	}
+	if (!strnicmp(buf,"activate",8)) {
+		retval = pnp_activate_dev(dev);
+		goto done;
+	}
+	if (!strnicmp(buf,"fill",4)) {
+		if (dev->active)
+			goto done;
+		retval = pnp_auto_config_dev(dev);
+		goto done;
+	}
+	if (!strnicmp(buf,"auto",4)) {
+		if (dev->active)
+			goto done;
+		pnp_init_resource_table(&dev->res);
+		retval = pnp_auto_config_dev(dev);
+		goto done;
+	}
+	if (!strnicmp(buf,"clear",5)) {
+		if (dev->active)
+			goto done;
+		pnp_init_resource_table(&dev->res);
+		goto done;
+	}
+	if (!strnicmp(buf,"get",3)) {
+		down(&pnp_res_mutex);
+		if (pnp_can_read(dev))
+			dev->protocol->get(dev, &dev->res);
+		up(&pnp_res_mutex);
+		goto done;
+	}
+	if (!strnicmp(buf,"set",3)) {
+		int nport = 0, nmem = 0, nirq = 0, ndma = 0;
+		if (dev->active)
+			goto done;
+		buf += 3;
+		pnp_init_resource_table(&dev->res);
+		down(&pnp_res_mutex);
+		while (1) {
+			while (isspace(*buf))
+				++buf;
+			if (!strnicmp(buf,"io",2)) {
+				buf += 2;
+				while (isspace(*buf))
+					++buf;
+				dev->res.port_resource[nport].start = simple_strtoul(buf,&buf,0);
+				while (isspace(*buf))
+					++buf;
+				if(*buf == '-') {
+					buf += 1;
+					while (isspace(*buf))
+						++buf;
+					dev->res.port_resource[nport].end = simple_strtoul(buf,&buf,0);
+				} else
+					dev->res.port_resource[nport].end = dev->res.port_resource[nport].start;
+				dev->res.port_resource[nport].flags = IORESOURCE_IO;
+				nport++;
+				if (nport >= PNP_MAX_PORT)
+					break;
+				continue;
+			}
+			if (!strnicmp(buf,"mem",3)) {
+				buf += 3;
+				while (isspace(*buf))
+					++buf;
+				dev->res.mem_resource[nmem].start = simple_strtoul(buf,&buf,0);
+				while (isspace(*buf))
+					++buf;
+				if(*buf == '-') {
+					buf += 1;
+					while (isspace(*buf))
+						++buf;
+					dev->res.mem_resource[nmem].end = simple_strtoul(buf,&buf,0);
+				} else
+					dev->res.mem_resource[nmem].end = dev->res.mem_resource[nmem].start;
+				dev->res.mem_resource[nmem].flags = IORESOURCE_MEM;
+				nmem++;
+				if (nmem >= PNP_MAX_MEM)
+					break;
+				continue;
+			}
+			if (!strnicmp(buf,"irq",3)) {
+				buf += 3;
+				while (isspace(*buf))
+					++buf;
+				dev->res.irq_resource[nirq].start =
+				dev->res.irq_resource[nirq].end = simple_strtoul(buf,&buf,0);
+				dev->res.irq_resource[nirq].flags = IORESOURCE_IRQ;
+				nirq++;
+				if (nirq >= PNP_MAX_IRQ)
+					break;
+				continue;
+			}
+			if (!strnicmp(buf,"dma",3)) {
+				buf += 3;
+				while (isspace(*buf))
+					++buf;
+				dev->res.dma_resource[ndma].start =
+				dev->res.dma_resource[ndma].end = simple_strtoul(buf,&buf,0);
+				dev->res.dma_resource[ndma].flags = IORESOURCE_DMA;
+				ndma++;
+				if (ndma >= PNP_MAX_DMA)
+					break;
+				continue;
+			}
+			break;
+		}
+		up(&pnp_res_mutex);
+		goto done;
+	}
+ done:
+	if (retval < 0)
+		return retval;
+	return count;
+}
+
+static DEVICE_ATTR(resources,S_IRUGO | S_IWUSR,
+		   pnp_show_current_resources,pnp_set_current_resources);
+
+static ssize_t pnp_show_current_ids(struct device *dmdev, char *buf)
+{
+	char *str = buf;
+	struct pnp_dev *dev = to_pnp_dev(dmdev);
+	struct pnp_id * pos = dev->id;
+
+	while (pos) {
+		str += sprintf(str,"%s\n", pos->id);
+		pos = pos->next;
+	}
+	return (str - buf);
+}
+
+static DEVICE_ATTR(id,S_IRUGO,pnp_show_current_ids,NULL);
+
+int pnp_interface_attach_device(struct pnp_dev *dev)
+{
+	device_create_file(&dev->dev,&dev_attr_options);
+	device_create_file(&dev->dev,&dev_attr_resources);
+	device_create_file(&dev->dev,&dev_attr_id);
+	return 0;
+}

drivers/pnp/isapnp/Kconfig

@@ -0,0 +1,11 @@
+#
+# ISA Plug and Play configuration
+#
+config ISAPNP
+	bool "ISA Plug and Play support"
+	depends on PNP && ISA
+	help
+	  Say Y here if you would like support for ISA Plug and Play devices.
+	  Some information is in <file:Documentation/isapnp.txt>.
+
+	  If unsure, say Y.

drivers/pnp/isapnp/Makefile

@@ -0,0 +1,7 @@
+#
+# Makefile for the kernel ISAPNP driver.
+#
+
+isapnp-proc-$(CONFIG_PROC_FS) = proc.o
+
+obj-y := core.o compat.o $(isapnp-proc-y)

drivers/pnp/isapnp/compat.c

@@ -0,0 +1,91 @@
+/*
+ * compat.c - A series of functions to make it easier to convert drivers that use
+ *            the old isapnp APIs. If possible use the new APIs instead.
+ *
+ * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+ 
+/* TODO: see if more isapnp functions are needed here */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/isapnp.h>
+#include <linux/string.h>
+
+static void pnp_convert_id(char *buf, unsigned short vendor, unsigned short device)
+{
+	sprintf(buf, "%c%c%c%x%x%x%x",
+			'A' + ((vendor >> 2) & 0x3f) - 1,
+			'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1,
+			'A' + ((vendor >> 8) & 0x1f) - 1,
+			(device >> 4) & 0x0f,
+			device & 0x0f,
+			(device >> 12) & 0x0f,
+			(device >> 8) & 0x0f);
+}
+
+struct pnp_card *pnp_find_card(unsigned short vendor,
+			       unsigned short device,
+			       struct pnp_card *from)
+{
+	char id[8];
+	char any[8];
+	struct list_head *list;
+	pnp_convert_id(id, vendor, device);
+	pnp_convert_id(any, ISAPNP_ANY_ID, ISAPNP_ANY_ID);
+
+	list = from ? from->global_list.next : pnp_cards.next;
+
+	while (list != &pnp_cards) {
+		struct pnp_card *card = global_to_pnp_card(list);
+		if (compare_pnp_id(card->id,id) || (memcmp(id,any,7)==0))
+			return card;
+		list = list->next;
+	}
+	return NULL;
+}
+
+struct pnp_dev *pnp_find_dev(struct pnp_card *card,
+			     unsigned short vendor,
+			     unsigned short function,
+			     struct pnp_dev *from)
+{
+	char id[8];
+	char any[8];
+	pnp_convert_id(id, vendor, function);
+	pnp_convert_id(any, ISAPNP_ANY_ID, ISAPNP_ANY_ID);
+	if (card == NULL) {	/* look for a logical device from all cards */
+		struct list_head *list;
+
+		list = pnp_global.next;
+		if (from)
+			list = from->global_list.next;
+
+		while (list != &pnp_global) {
+			struct pnp_dev *dev = global_to_pnp_dev(list);
+			if (compare_pnp_id(dev->id,id) || (memcmp(id,any,7)==0))
+				return dev;
+			list = list->next;
+		}
+	} else {
+		struct list_head *list;
+
+		list = card->devices.next;
+		if (from) {
+			list = from->card_list.next;
+			if (from->card != card)	/* something is wrong */
+				return NULL;
+		}
+		while (list != &card->devices) {
+			struct pnp_dev *dev = card_to_pnp_dev(list);
+			if (compare_pnp_id(dev->id,id))
+				return dev;
+			list = list->next;
+		}
+	}
+	return NULL;
+}
+
+EXPORT_SYMBOL(pnp_find_card);
+EXPORT_SYMBOL(pnp_find_dev);

drivers/pnp/isapnp/proc.c

@@ -0,0 +1,171 @@
+/*
+ *  ISA Plug & Play support
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ *   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.  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.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/isapnp.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <linux/smp_lock.h>
+#include <asm/uaccess.h>
+
+extern struct pnp_protocol isapnp_protocol;
+
+static struct proc_dir_entry *isapnp_proc_bus_dir = NULL;
+
+static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence)
+{
+	loff_t new = -1;
+
+	lock_kernel();
+	switch (whence) {
+	case 0:
+		new = off;
+		break;
+	case 1:
+		new = file->f_pos + off;
+		break;
+	case 2:
+		new = 256 + off;
+		break;
+	}
+	if (new < 0 || new > 256) {
+		unlock_kernel();
+		return -EINVAL;
+	}
+	unlock_kernel();
+	return (file->f_pos = new);
+}
+
+static ssize_t isapnp_proc_bus_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
+{
+	struct inode *ino = file->f_dentry->d_inode;
+	struct proc_dir_entry *dp = PDE(ino);
+	struct pnp_dev *dev = dp->data;
+	int pos = *ppos;
+	int cnt, size = 256;
+
+	if (pos >= size)
+		return 0;
+	if (nbytes >= size)
+		nbytes = size;
+	if (pos + nbytes > size)
+		nbytes = size - pos;
+	cnt = nbytes;
+
+	if (!access_ok(VERIFY_WRITE, buf, cnt))
+		return -EINVAL;
+
+	isapnp_cfg_begin(dev->card->number, dev->number);
+	for ( ; pos < 256 && cnt > 0; pos++, buf++, cnt--) {
+		unsigned char val;
+		val = isapnp_read_byte(pos);
+		__put_user(val, buf);
+	}
+	isapnp_cfg_end();
+
+	*ppos = pos;
+	return nbytes;
+}
+
+static struct file_operations isapnp_proc_bus_file_operations =
+{
+	.llseek		= isapnp_proc_bus_lseek,
+	.read		= isapnp_proc_bus_read,
+};
+
+static int isapnp_proc_attach_device(struct pnp_dev *dev)
+{
+	struct pnp_card *bus = dev->card;
+	struct proc_dir_entry *de, *e;
+	char name[16];
+
+	if (!(de = bus->procdir)) {
+		sprintf(name, "%02x", bus->number);
+		de = bus->procdir = proc_mkdir(name, isapnp_proc_bus_dir);
+		if (!de)
+			return -ENOMEM;
+	}
+	sprintf(name, "%02x", dev->number);
+	e = dev->procent = create_proc_entry(name, S_IFREG | S_IRUGO, de);
+	if (!e)
+		return -ENOMEM;
+	e->proc_fops = &isapnp_proc_bus_file_operations;
+	e->owner = THIS_MODULE;
+	e->data = dev;
+	e->size = 256;
+	return 0;
+}
+
+#ifdef MODULE
+static int __exit isapnp_proc_detach_device(struct pnp_dev *dev)
+{
+	struct pnp_card *bus = dev->card;
+	struct proc_dir_entry *de;
+	char name[16];
+
+	if (!(de = bus->procdir))
+		return -EINVAL;
+	sprintf(name, "%02x", dev->number);
+	remove_proc_entry(name, de);
+	return 0;
+}
+
+static int __exit isapnp_proc_detach_bus(struct pnp_card *bus)
+{
+	struct proc_dir_entry *de;
+	char name[16];
+
+	if (!(de = bus->procdir))
+		return -EINVAL;
+	sprintf(name, "%02x", bus->number);
+	remove_proc_entry(name, isapnp_proc_bus_dir);
+	return 0;
+}
+#endif /* MODULE */
+
+int __init isapnp_proc_init(void)
+{
+	struct pnp_dev *dev;
+	isapnp_proc_bus_dir = proc_mkdir("isapnp", proc_bus);
+	protocol_for_each_dev(&isapnp_protocol,dev) {
+		isapnp_proc_attach_device(dev);
+	}
+	return 0;
+}
+
+#ifdef MODULE
+int __exit isapnp_proc_done(void)
+{
+	struct pnp_dev *dev;
+	struct pnp_bus *card;
+
+	isapnp_for_each_dev(dev) {
+		isapnp_proc_detach_device(dev);
+	}
+	isapnp_for_each_card(card) {
+		isapnp_proc_detach_bus(card);
+	}
+	if (isapnp_proc_bus_dir)
+		remove_proc_entry("isapnp", proc_bus);
+	return 0;
+}
+#endif /* MODULE */

drivers/pnp/manager.c

@@ -0,0 +1,566 @@
+/*
+ * manager.c - Resource Management, Conflict Resolution, Activation and Disabling of Devices
+ *
+ * based on isapnp.c resource management (c) Jaroslav Kysela <perex@suse.cz>
+ * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#ifdef CONFIG_PNP_DEBUG
+	#define DEBUG
+#else
+	#undef DEBUG
+#endif
+
+#include <linux/pnp.h>
+#include "base.h"
+
+DECLARE_MUTEX(pnp_res_mutex);
+
+static int pnp_assign_port(struct pnp_dev *dev, struct pnp_port *rule, int idx)
+{
+	unsigned long *start, *end, *flags;
+
+	if (!dev || !rule)
+		return -EINVAL;
+
+	if (idx >= PNP_MAX_PORT) {
+		pnp_err("More than 4 ports is incompatible with pnp specifications.");
+		/* pretend we were successful so at least the manager won't try again */
+		return 1;
+	}
+
+	/* check if this resource has been manually set, if so skip */
+	if (!(dev->res.port_resource[idx].flags & IORESOURCE_AUTO))
+		return 1;
+
+	start = &dev->res.port_resource[idx].start;
+	end = &dev->res.port_resource[idx].end;
+	flags = &dev->res.port_resource[idx].flags;
+
+	/* set the initial values */
+	*flags |= rule->flags | IORESOURCE_IO;
+	*flags &=  ~IORESOURCE_UNSET;
+
+	if (!rule->size) {
+		*flags |= IORESOURCE_DISABLED;
+		return 1; /* skip disabled resource requests */
+	}
+
+	*start = rule->min;
+	*end = *start + rule->size - 1;
+
+	/* run through until pnp_check_port is happy */
+	while (!pnp_check_port(dev, idx)) {
+		*start += rule->align;
+		*end = *start + rule->size - 1;
+		if (*start > rule->max || !rule->align)
+			return 0;
+	}
+	return 1;
+}
+
+static int pnp_assign_mem(struct pnp_dev *dev, struct pnp_mem *rule, int idx)
+{
+	unsigned long *start, *end, *flags;
+
+	if (!dev || !rule)
+		return -EINVAL;
+
+	if (idx >= PNP_MAX_MEM) {
+		pnp_err("More than 8 mems is incompatible with pnp specifications.");
+		/* pretend we were successful so at least the manager won't try again */
+		return 1;
+	}
+
+	/* check if this resource has been manually set, if so skip */
+	if (!(dev->res.mem_resource[idx].flags & IORESOURCE_AUTO))
+		return 1;
+
+	start = &dev->res.mem_resource[idx].start;
+	end = &dev->res.mem_resource[idx].end;
+	flags = &dev->res.mem_resource[idx].flags;
+
+	/* set the initial values */
+	*flags |= rule->flags | IORESOURCE_MEM;
+	*flags &=  ~IORESOURCE_UNSET;
+
+	/* convert pnp flags to standard Linux flags */
+	if (!(rule->flags & IORESOURCE_MEM_WRITEABLE))
+		*flags |= IORESOURCE_READONLY;
+	if (rule->flags & IORESOURCE_MEM_CACHEABLE)
+		*flags |= IORESOURCE_CACHEABLE;
+	if (rule->flags & IORESOURCE_MEM_RANGELENGTH)
+		*flags |= IORESOURCE_RANGELENGTH;
+	if (rule->flags & IORESOURCE_MEM_SHADOWABLE)
+		*flags |= IORESOURCE_SHADOWABLE;
+
+	if (!rule->size) {
+		*flags |= IORESOURCE_DISABLED;
+		return 1; /* skip disabled resource requests */
+	}
+
+	*start = rule->min;
+	*end = *start + rule->size -1;
+
+	/* run through until pnp_check_mem is happy */
+	while (!pnp_check_mem(dev, idx)) {
+		*start += rule->align;
+		*end = *start + rule->size - 1;
+		if (*start > rule->max || !rule->align)
+			return 0;
+	}
+	return 1;
+}
+
+static int pnp_assign_irq(struct pnp_dev * dev, struct pnp_irq *rule, int idx)
+{
+	unsigned long *start, *end, *flags;
+	int i;
+
+	/* IRQ priority: this table is good for i386 */
+	static unsigned short xtab[16] = {
+		5, 10, 11, 12, 9, 14, 15, 7, 3, 4, 13, 0, 1, 6, 8, 2
+	};
+
+	if (!dev || !rule)
+		return -EINVAL;
+
+	if (idx >= PNP_MAX_IRQ) {
+		pnp_err("More than 2 irqs is incompatible with pnp specifications.");
+		/* pretend we were successful so at least the manager won't try again */
+		return 1;
+	}
+
+	/* check if this resource has been manually set, if so skip */
+	if (!(dev->res.irq_resource[idx].flags & IORESOURCE_AUTO))
+		return 1;
+
+	start = &dev->res.irq_resource[idx].start;
+	end = &dev->res.irq_resource[idx].end;
+	flags = &dev->res.irq_resource[idx].flags;
+
+	/* set the initial values */
+	*flags |= rule->flags | IORESOURCE_IRQ;
+	*flags &=  ~IORESOURCE_UNSET;
+
+	if (bitmap_empty(rule->map, PNP_IRQ_NR)) {
+		*flags |= IORESOURCE_DISABLED;
+		return 1; /* skip disabled resource requests */
+	}
+
+	/* TBD: need check for >16 IRQ */
+	*start = find_next_bit(rule->map, PNP_IRQ_NR, 16);
+	if (*start < PNP_IRQ_NR) {
+		*end = *start;
+		return 1;
+	}
+	for (i = 0; i < 16; i++) {
+		if(test_bit(xtab[i], rule->map)) {
+			*start = *end = xtab[i];
+			if(pnp_check_irq(dev, idx))
+				return 1;
+		}
+	}
+	return 0;
+}
+
+static int pnp_assign_dma(struct pnp_dev *dev, struct pnp_dma *rule, int idx)
+{
+	unsigned long *start, *end, *flags;
+	int i;
+
+	/* DMA priority: this table is good for i386 */
+	static unsigned short xtab[8] = {
+		1, 3, 5, 6, 7, 0, 2, 4
+	};
+
+	if (!dev || !rule)
+		return -EINVAL;
+
+	if (idx >= PNP_MAX_DMA) {
+		pnp_err("More than 2 dmas is incompatible with pnp specifications.");
+		/* pretend we were successful so at least the manager won't try again */
+		return 1;
+	}
+
+	/* check if this resource has been manually set, if so skip */
+	if (!(dev->res.dma_resource[idx].flags & IORESOURCE_AUTO))
+		return 1;
+
+	start = &dev->res.dma_resource[idx].start;
+	end = &dev->res.dma_resource[idx].end;
+	flags = &dev->res.dma_resource[idx].flags;
+
+	/* set the initial values */
+	*flags |= rule->flags | IORESOURCE_DMA;
+	*flags &=  ~IORESOURCE_UNSET;
+
+	if (!rule->map) {
+		*flags |= IORESOURCE_DISABLED;
+		return 1; /* skip disabled resource requests */
+	}
+
+	for (i = 0; i < 8; i++) {
+		if(rule->map & (1<<xtab[i])) {
+			*start = *end = xtab[i];
+			if(pnp_check_dma(dev, idx))
+				return 1;
+		}
+	}
+	return 0;
+}
+
+/**
+ * pnp_init_resources - Resets a resource table to default values.
+ * @table: pointer to the desired resource table
+ *
+ */
+void pnp_init_resource_table(struct pnp_resource_table *table)
+{
+	int idx;
+	for (idx = 0; idx < PNP_MAX_IRQ; idx++) {
+		table->irq_resource[idx].name = NULL;
+		table->irq_resource[idx].start = -1;
+		table->irq_resource[idx].end = -1;
+		table->irq_resource[idx].flags = IORESOURCE_IRQ | IORESOURCE_AUTO | IORESOURCE_UNSET;
+	}
+	for (idx = 0; idx < PNP_MAX_DMA; idx++) {
+		table->dma_resource[idx].name = NULL;
+		table->dma_resource[idx].start = -1;
+		table->dma_resource[idx].end = -1;
+		table->dma_resource[idx].flags = IORESOURCE_DMA | IORESOURCE_AUTO | IORESOURCE_UNSET;
+	}
+	for (idx = 0; idx < PNP_MAX_PORT; idx++) {
+		table->port_resource[idx].name = NULL;
+		table->port_resource[idx].start = 0;
+		table->port_resource[idx].end = 0;
+		table->port_resource[idx].flags = IORESOURCE_IO | IORESOURCE_AUTO | IORESOURCE_UNSET;
+	}
+	for (idx = 0; idx < PNP_MAX_MEM; idx++) {
+		table->mem_resource[idx].name = NULL;
+		table->mem_resource[idx].start = 0;
+		table->mem_resource[idx].end = 0;
+		table->mem_resource[idx].flags = IORESOURCE_MEM | IORESOURCE_AUTO | IORESOURCE_UNSET;
+	}
+}
+
+/**
+ * pnp_clean_resources - clears resources that were not manually set
+ * @res - the resources to clean
+ *
+ */
+static void pnp_clean_resource_table(struct pnp_resource_table * res)
+{
+	int idx;
+	for (idx = 0; idx < PNP_MAX_IRQ; idx++) {
+		if (!(res->irq_resource[idx].flags & IORESOURCE_AUTO))
+			continue;
+		res->irq_resource[idx].start = -1;
+		res->irq_resource[idx].end = -1;
+		res->irq_resource[idx].flags = IORESOURCE_IRQ | IORESOURCE_AUTO | IORESOURCE_UNSET;
+	}
+	for (idx = 0; idx < PNP_MAX_DMA; idx++) {
+		if (!(res->dma_resource[idx].flags & IORESOURCE_AUTO))
+			continue;
+		res->dma_resource[idx].start = -1;
+		res->dma_resource[idx].end = -1;
+		res->dma_resource[idx].flags = IORESOURCE_DMA | IORESOURCE_AUTO | IORESOURCE_UNSET;
+	}
+	for (idx = 0; idx < PNP_MAX_PORT; idx++) {
+		if (!(res->port_resource[idx].flags & IORESOURCE_AUTO))
+			continue;
+		res->port_resource[idx].start = 0;
+		res->port_resource[idx].end = 0;
+		res->port_resource[idx].flags = IORESOURCE_IO | IORESOURCE_AUTO | IORESOURCE_UNSET;
+	}
+	for (idx = 0; idx < PNP_MAX_MEM; idx++) {
+		if (!(res->mem_resource[idx].flags & IORESOURCE_AUTO))
+			continue;
+		res->mem_resource[idx].start = 0;
+		res->mem_resource[idx].end = 0;
+		res->mem_resource[idx].flags = IORESOURCE_MEM | IORESOURCE_AUTO | IORESOURCE_UNSET;
+	}
+}
+
+/**
+ * pnp_assign_resources - assigns resources to the device based on the specified dependent number
+ * @dev: pointer to the desired device
+ * @depnum: the dependent function number
+ *
+ * Only set depnum to 0 if the device does not have dependent options.
+ */
+static int pnp_assign_resources(struct pnp_dev *dev, int depnum)
+{
+	struct pnp_port *port;
+	struct pnp_mem *mem;
+	struct pnp_irq *irq;
+	struct pnp_dma *dma;
+	int nport = 0, nmem = 0, nirq = 0, ndma = 0;
+
+	if (!pnp_can_configure(dev))
+		return -ENODEV;
+
+	down(&pnp_res_mutex);
+	pnp_clean_resource_table(&dev->res); /* start with a fresh slate */
+	if (dev->independent) {
+		port = dev->independent->port;
+		mem = dev->independent->mem;
+		irq = dev->independent->irq;
+		dma = dev->independent->dma;
+		while (port) {
+			if (!pnp_assign_port(dev, port, nport))
+				goto fail;
+			nport++;
+			port = port->next;
+		}
+		while (mem) {
+			if (!pnp_assign_mem(dev, mem, nmem))
+				goto fail;
+			nmem++;
+			mem = mem->next;
+		}
+		while (irq) {
+			if (!pnp_assign_irq(dev, irq, nirq))
+				goto fail;
+			nirq++;
+			irq = irq->next;
+		}
+		while (dma) {
+			if (!pnp_assign_dma(dev, dma, ndma))
+				goto fail;
+			ndma++;
+			dma = dma->next;
+		}
+	}
+
+	if (depnum) {
+		struct pnp_option *dep;
+		int i;
+		for (i=1,dep=dev->dependent; i<depnum; i++, dep=dep->next)
+			if(!dep)
+				goto fail;
+		port =dep->port;
+		mem = dep->mem;
+		irq = dep->irq;
+		dma = dep->dma;
+		while (port) {
+			if (!pnp_assign_port(dev, port, nport))
+				goto fail;
+			nport++;
+			port = port->next;
+		}
+		while (mem) {
+			if (!pnp_assign_mem(dev, mem, nmem))
+				goto fail;
+			nmem++;
+			mem = mem->next;
+		}
+		while (irq) {
+			if (!pnp_assign_irq(dev, irq, nirq))
+				goto fail;
+			nirq++;
+			irq = irq->next;
+		}
+		while (dma) {
+			if (!pnp_assign_dma(dev, dma, ndma))
+				goto fail;
+			ndma++;
+			dma = dma->next;
+		}
+	} else if (dev->dependent)
+		goto fail;
+
+	up(&pnp_res_mutex);
+	return 1;
+
+fail:
+	pnp_clean_resource_table(&dev->res);
+	up(&pnp_res_mutex);
+	return 0;
+}
+
+/**
+ * pnp_manual_config_dev - Disables Auto Config and Manually sets the resource table
+ * @dev: pointer to the desired device
+ * @res: pointer to the new resource config
+ *
+ * This function can be used by drivers that want to manually set thier resources.
+ */
+int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table * res, int mode)
+{
+	int i;
+	struct pnp_resource_table * bak;
+	if (!dev || !res)
+		return -EINVAL;
+	if (!pnp_can_configure(dev))
+		return -ENODEV;
+	bak = pnp_alloc(sizeof(struct pnp_resource_table));
+	if (!bak)
+		return -ENOMEM;
+	*bak = dev->res;
+
+	down(&pnp_res_mutex);
+	dev->res = *res;
+	if (!(mode & PNP_CONFIG_FORCE)) {
+		for (i = 0; i < PNP_MAX_PORT; i++) {
+			if(!pnp_check_port(dev,i))
+				goto fail;
+		}
+		for (i = 0; i < PNP_MAX_MEM; i++) {
+			if(!pnp_check_mem(dev,i))
+				goto fail;
+		}
+		for (i = 0; i < PNP_MAX_IRQ; i++) {
+			if(!pnp_check_irq(dev,i))
+				goto fail;
+		}
+		for (i = 0; i < PNP_MAX_DMA; i++) {
+			if(!pnp_check_dma(dev,i))
+				goto fail;
+		}
+	}
+	up(&pnp_res_mutex);
+
+	kfree(bak);
+	return 0;
+
+fail:
+	dev->res = *bak;
+	up(&pnp_res_mutex);
+	kfree(bak);
+	return -EINVAL;
+}
+
+/**
+ * pnp_auto_config_dev - automatically assigns resources to a device
+ * @dev: pointer to the desired device
+ *
+ */
+int pnp_auto_config_dev(struct pnp_dev *dev)
+{
+	struct pnp_option *dep;
+	int i = 1;
+
+	if(!dev)
+		return -EINVAL;
+
+	if(!pnp_can_configure(dev)) {
+		pnp_info("Device %s does not support resource configuration.", dev->dev.bus_id);
+		return -ENODEV;
+	}
+
+	if (!dev->dependent) {
+		if (pnp_assign_resources(dev, 0))
+			return 0;
+	} else {
+		dep = dev->dependent;
+		do {
+			if (pnp_assign_resources(dev, i))
+				return 0;
+			dep = dep->next;
+			i++;
+		} while (dep);
+	}
+
+	pnp_err("Unable to assign resources to device %s.", dev->dev.bus_id);
+	return -EBUSY;
+}
+
+/**
+ * pnp_activate_dev - activates a PnP device for use
+ * @dev: pointer to the desired device
+ *
+ * does not validate or set resources so be careful.
+ */
+int pnp_activate_dev(struct pnp_dev *dev)
+{
+	if (!dev)
+		return -EINVAL;
+	if (dev->active) {
+		return 0; /* the device is already active */
+	}
+
+	/* ensure resources are allocated */
+	if (pnp_auto_config_dev(dev))
+		return -EBUSY;
+
+	if (!pnp_can_write(dev)) {
+		pnp_info("Device %s does not supported activation.", dev->dev.bus_id);
+		return -EINVAL;
+	}
+
+	if (dev->protocol->set(dev, &dev->res)<0) {
+		pnp_err("Failed to activate device %s.", dev->dev.bus_id);
+		return -EIO;
+	}
+
+	dev->active = 1;
+	pnp_info("Device %s activated.", dev->dev.bus_id);
+
+	return 1;
+}
+
+/**
+ * pnp_disable_dev - disables device
+ * @dev: pointer to the desired device
+ *
+ * inform the correct pnp protocol so that resources can be used by other devices
+ */
+int pnp_disable_dev(struct pnp_dev *dev)
+{
+        if (!dev)
+                return -EINVAL;
+	if (!dev->active) {
+		return 0; /* the device is already disabled */
+	}
+
+	if (!pnp_can_disable(dev)) {
+		pnp_info("Device %s does not supported disabling.", dev->dev.bus_id);
+		return -EINVAL;
+	}
+	if (dev->protocol->disable(dev)<0) {
+		pnp_err("Failed to disable device %s.", dev->dev.bus_id);
+		return -EIO;
+	}
+
+	dev->active = 0;
+	pnp_info("Device %s disabled.", dev->dev.bus_id);
+
+	/* release the resources so that other devices can use them */
+	down(&pnp_res_mutex);
+	pnp_clean_resource_table(&dev->res);
+	up(&pnp_res_mutex);
+
+	return 1;
+}
+
+/**
+ * pnp_resource_change - change one resource
+ * @resource: pointer to resource to be changed
+ * @start: start of region
+ * @size: size of region
+ *
+ */
+void pnp_resource_change(struct resource *resource, unsigned long start, unsigned long size)
+{
+	if (resource == NULL)
+		return;
+	resource->flags &= ~(IORESOURCE_AUTO | IORESOURCE_UNSET);
+	resource->start = start;
+	resource->end = start + size - 1;
+}
+
+
+EXPORT_SYMBOL(pnp_manual_config_dev);
+EXPORT_SYMBOL(pnp_auto_config_dev);
+EXPORT_SYMBOL(pnp_activate_dev);
+EXPORT_SYMBOL(pnp_disable_dev);
+EXPORT_SYMBOL(pnp_resource_change);
+EXPORT_SYMBOL(pnp_init_resource_table);

drivers/pnp/pnpacpi/Kconfig

@@ -0,0 +1,18 @@
+#
+# Plug and Play ACPI configuration
+#
+config PNPACPI
+	bool "Plug and Play ACPI support (EXPERIMENTAL)"
+	depends on PNP && ACPI_BUS && EXPERIMENTAL
+	default y
+	---help---
+	  Linux uses the PNPACPI to autodetect built-in
+	  mainboard resources (e.g. parallel port resources).
+
+          Some features (e.g. real hotplug) are not currently
+          implemented.
+
+          If you would like the kernel to detect and allocate resources to
+          your mainboard devices (on some systems they are disabled by the
+          BIOS) say Y here.  Also the PNPACPI can help prevent resource
+          conflicts between mainboard devices and other bus devices.

drivers/pnp/pnpacpi/Makefile

@@ -0,0 +1,5 @@
+#
+# Makefile for the kernel PNPACPI driver.
+#
+
+obj-y := core.o rsparser.o

drivers/pnp/pnpacpi/core.c

@@ -0,0 +1,269 @@
+/*
+ * pnpacpi -- PnP ACPI driver
+ *
+ * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr>
+ * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com>
+ * 
+ * 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, 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.  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+ 
+#include <linux/acpi.h>
+#include <linux/pnp.h>
+#include <acpi/acpi_bus.h>
+#include "pnpacpi.h"
+
+static int num = 0;
+
+static char __initdata excluded_id_list[] =
+	"PNP0C0A," /* Battery */
+	"PNP0C0C,PNP0C0E,PNP0C0D," /* Button */
+	"PNP0C09," /* EC */
+	"PNP0C0B," /* Fan */
+	"PNP0A03," /* PCI root */
+	"PNP0C0F," /* Link device */
+	"PNP0000," /* PIC */
+	"PNP0100," /* Timer */
+	;
+static inline int is_exclusive_device(struct acpi_device *dev)
+{
+	return (!acpi_match_ids(dev, excluded_id_list));
+}
+
+void *pnpacpi_kmalloc(size_t size, int f)
+{
+	void *p = kmalloc(size, f);
+	if (p)
+		memset(p, 0, size);
+	return p;
+}
+
+/*
+ * Compatible Device IDs
+ */
+#define TEST_HEX(c) \
+	if (!(('0' <= (c) && (c) <= '9') || ('A' <= (c) && (c) <= 'F'))) \
+		return 0
+#define TEST_ALPHA(c) \
+	if (!('@' <= (c) || (c) <= 'Z')) \
+		return 0
+static int __init ispnpidacpi(char *id)
+{
+	TEST_ALPHA(id[0]);
+	TEST_ALPHA(id[1]);
+	TEST_ALPHA(id[2]);
+	TEST_HEX(id[3]);
+	TEST_HEX(id[4]);
+	TEST_HEX(id[5]);
+	TEST_HEX(id[6]);
+	if (id[7] != '\0')
+		return 0;
+	return 1;
+}
+
+static void __init pnpidacpi_to_pnpid(char *id, char *str)
+{
+	str[0] = id[0];
+	str[1] = id[1];
+	str[2] = id[2];
+	str[3] = tolower(id[3]);
+	str[4] = tolower(id[4]);
+	str[5] = tolower(id[5]);
+	str[6] = tolower(id[6]);
+	str[7] = '\0';
+}
+
+static int pnpacpi_get_resources(struct pnp_dev * dev, struct pnp_resource_table * res)
+{
+	acpi_status status;
+	status = pnpacpi_parse_allocated_resource((acpi_handle)dev->data, 
+		&dev->res);
+	return ACPI_FAILURE(status) ? -ENODEV : 0;
+}
+
+static int pnpacpi_set_resources(struct pnp_dev * dev, struct pnp_resource_table * res)
+{
+	acpi_handle handle = dev->data;
+	struct acpi_buffer buffer;
+	int ret = 0;
+	acpi_status status;
+
+	ret = pnpacpi_build_resource_template(handle, &buffer);
+	if (ret)
+		return ret;
+	ret = pnpacpi_encode_resources(res, &buffer);
+	if (ret) {
+		kfree(buffer.pointer);
+		return ret;
+	}
+	status = acpi_set_current_resources(handle, &buffer);
+	if (ACPI_FAILURE(status))
+		ret = -EINVAL;
+	kfree(buffer.pointer);
+	return ret;
+}
+
+static int pnpacpi_disable_resources(struct pnp_dev *dev)
+{
+	acpi_status status;
+	
+	/* acpi_unregister_gsi(pnp_irq(dev, 0)); */
+	status = acpi_evaluate_object((acpi_handle)dev->data, 
+		"_DIS", NULL, NULL);
+	return ACPI_FAILURE(status) ? -ENODEV : 0;
+}
+
+struct pnp_protocol pnpacpi_protocol = {
+	.name	= "Plug and Play ACPI",
+	.get	= pnpacpi_get_resources,
+	.set	= pnpacpi_set_resources,
+	.disable = pnpacpi_disable_resources,
+};
+
+static int __init pnpacpi_add_device(struct acpi_device *device)
+{
+	acpi_handle temp = NULL;
+	acpi_status status;
+	struct pnp_id *dev_id;
+	struct pnp_dev *dev;
+
+	if (!ispnpidacpi(acpi_device_hid(device)) ||
+		is_exclusive_device(device))
+		return 0;
+
+	pnp_dbg("ACPI device : hid %s", acpi_device_hid(device));
+	dev =  pnpacpi_kmalloc(sizeof(struct pnp_dev), GFP_KERNEL);
+	if (!dev) {
+		pnp_err("Out of memory");
+		return -ENOMEM;
+	}
+	dev->data = device->handle;
+	/* .enabled means if the device can decode the resources */
+	dev->active = device->status.enabled;
+	status = acpi_get_handle(device->handle, "_SRS", &temp);
+	if (ACPI_SUCCESS(status))
+		dev->capabilities |= PNP_CONFIGURABLE;
+	dev->capabilities |= PNP_READ;
+	if (device->flags.dynamic_status)
+		dev->capabilities |= PNP_WRITE;
+	if (device->flags.removable)
+		dev->capabilities |= PNP_REMOVABLE;
+	status = acpi_get_handle(device->handle, "_DIS", &temp);
+	if (ACPI_SUCCESS(status))
+		dev->capabilities |= PNP_DISABLE;
+
+	dev->protocol = &pnpacpi_protocol;
+
+	if (strlen(acpi_device_name(device)))
+		strncpy(dev->name, acpi_device_name(device), sizeof(dev->name));
+	else
+		strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name));
+
+	dev->number = num;
+	
+	/* set the initial values for the PnP device */
+	dev_id = pnpacpi_kmalloc(sizeof(struct pnp_id), GFP_KERNEL);
+	if (!dev_id)
+		goto err;
+	pnpidacpi_to_pnpid(acpi_device_hid(device), dev_id->id);
+	pnp_add_id(dev_id, dev);
+
+	if(dev->active) {
+		/* parse allocated resource */
+		status = pnpacpi_parse_allocated_resource(device->handle, &dev->res);
+		if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
+			pnp_err("PnPACPI: METHOD_NAME__CRS failure for %s", dev_id->id);
+			goto err1;
+		}
+	}
+
+	if(dev->capabilities & PNP_CONFIGURABLE) {
+		status = pnpacpi_parse_resource_option_data(device->handle, 
+			dev);
+		if (ACPI_FAILURE(status) && (status != AE_NOT_FOUND)) {
+			pnp_err("PnPACPI: METHOD_NAME__PRS failure for %s", dev_id->id);
+			goto err1;
+		}
+	}
+	
+	/* parse compatible ids */
+	if (device->flags.compatible_ids) {
+		struct acpi_compatible_id_list *cid_list = device->pnp.cid_list;
+		int i;
+
+		for (i = 0; i < cid_list->count; i++) {
+			if (!ispnpidacpi(cid_list->id[i].value))
+				continue;
+			dev_id = pnpacpi_kmalloc(sizeof(struct pnp_id), 
+				GFP_KERNEL);
+			if (!dev_id)
+				continue;
+
+			pnpidacpi_to_pnpid(cid_list->id[i].value, dev_id->id);
+			pnp_add_id(dev_id, dev);
+		}
+	}
+
+	/* clear out the damaged flags */
+	if (!dev->active)
+		pnp_init_resource_table(&dev->res);
+	pnp_add_device(dev);
+	num ++;
+
+	return AE_OK;
+err1:
+	kfree(dev_id);
+err:
+	kfree(dev);
+	return -EINVAL;
+}
+
+static acpi_status __init pnpacpi_add_device_handler(acpi_handle handle,
+	u32 lvl, void *context, void **rv)
+{
+	struct acpi_device *device;
+
+	if (!acpi_bus_get_device(handle, &device))
+		pnpacpi_add_device(device);
+	else
+		return AE_CTRL_DEPTH;
+	return AE_OK;
+}
+
+int pnpacpi_disabled __initdata;
+int __init pnpacpi_init(void)
+{
+	if (acpi_disabled || pnpacpi_disabled) {
+		pnp_info("PnP ACPI: disabled");
+		return 0;
+	}
+	pnp_info("PnP ACPI init");
+	pnp_register_protocol(&pnpacpi_protocol);
+	acpi_get_devices(NULL, pnpacpi_add_device_handler, NULL, NULL);
+	pnp_info("PnP ACPI: found %d devices", num);
+	return 0;
+}
+subsys_initcall(pnpacpi_init);
+
+static int __init pnpacpi_setup(char *str)
+{
+	if (str == NULL)
+		return 1;
+	if (!strncmp(str, "off", 3))
+		pnpacpi_disabled = 1;
+	return 1;
+}
+__setup("pnpacpi=", pnpacpi_setup);
+
+EXPORT_SYMBOL(pnpacpi_protocol);

drivers/pnp/pnpacpi/pnpacpi.h

@@ -0,0 +1,13 @@
+#ifndef ACPI_PNP_H
+#define ACPI_PNP_H
+
+#include <acpi/acpi_bus.h>
+#include <linux/acpi.h>
+#include <linux/pnp.h>
+
+void *pnpacpi_kmalloc(size_t size, int f);
+acpi_status pnpacpi_parse_allocated_resource(acpi_handle, struct pnp_resource_table*);
+acpi_status pnpacpi_parse_resource_option_data(acpi_handle, struct pnp_dev*);
+int pnpacpi_encode_resources(struct pnp_resource_table *, struct acpi_buffer *);
+int pnpacpi_build_resource_template(acpi_handle, struct acpi_buffer*);
+#endif

drivers/pnp/pnpacpi/rsparser.c

@@ -0,0 +1,821 @@
+/*
+ * pnpacpi -- PnP ACPI driver
+ *
+ * Copyright (c) 2004 Matthieu Castet <castet.matthieu@free.fr>
+ * Copyright (c) 2004 Li Shaohua <shaohua.li@intel.com>
+ * 
+ * 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, 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.  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#include <linux/kernel.h>
+#include <linux/acpi.h>
+#include <linux/pci.h>
+#include "pnpacpi.h"
+
+#ifdef CONFIG_IA64
+#define valid_IRQ(i) (1)
+#else
+#define valid_IRQ(i) (((i) != 0) && ((i) != 2))
+#endif
+
+/*
+ * Allocated Resources
+ */
+static int irq_flags(int edge_level, int active_high_low)
+{
+	int flag;
+	if (edge_level == ACPI_LEVEL_SENSITIVE) {
+		if(active_high_low == ACPI_ACTIVE_LOW)
+			flag = IORESOURCE_IRQ_LOWLEVEL;
+		else
+			flag = IORESOURCE_IRQ_HIGHLEVEL;
+	}
+	else {
+		if(active_high_low == ACPI_ACTIVE_LOW)
+			flag = IORESOURCE_IRQ_LOWEDGE;
+		else
+			flag = IORESOURCE_IRQ_HIGHEDGE;
+	}
+	return flag;
+}
+
+static void decode_irq_flags(int flag, int *edge_level, int *active_high_low)
+{
+	switch (flag) {
+	case IORESOURCE_IRQ_LOWLEVEL:
+		*edge_level = ACPI_LEVEL_SENSITIVE;
+		*active_high_low = ACPI_ACTIVE_LOW;
+		break;
+	case IORESOURCE_IRQ_HIGHLEVEL:	
+		*edge_level = ACPI_LEVEL_SENSITIVE;
+		*active_high_low = ACPI_ACTIVE_HIGH;
+		break;
+	case IORESOURCE_IRQ_LOWEDGE:
+		*edge_level = ACPI_EDGE_SENSITIVE;
+		*active_high_low = ACPI_ACTIVE_LOW;
+		break;
+	case IORESOURCE_IRQ_HIGHEDGE:
+		*edge_level = ACPI_EDGE_SENSITIVE;
+		*active_high_low = ACPI_ACTIVE_HIGH;
+		break;
+	}
+}
+
+static void
+pnpacpi_parse_allocated_irqresource(struct pnp_resource_table * res, int irq)
+{
+	int i = 0;
+	while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) &&
+			i < PNP_MAX_IRQ)
+		i++;
+	if (i < PNP_MAX_IRQ) {
+		res->irq_resource[i].flags = IORESOURCE_IRQ;  //Also clears _UNSET flag
+		if (irq == -1) {
+			res->irq_resource[i].flags |= IORESOURCE_DISABLED;
+			return;
+		}
+		res->irq_resource[i].start =(unsigned long) irq;
+		res->irq_resource[i].end = (unsigned long) irq;
+	}
+}
+
+static void
+pnpacpi_parse_allocated_dmaresource(struct pnp_resource_table * res, int dma)
+{
+	int i = 0;
+	while (!(res->dma_resource[i].flags & IORESOURCE_UNSET) &&
+			i < PNP_MAX_DMA)
+		i++;
+	if (i < PNP_MAX_DMA) {
+		res->dma_resource[i].flags = IORESOURCE_DMA;  // Also clears _UNSET flag
+		if (dma == -1) {
+			res->dma_resource[i].flags |= IORESOURCE_DISABLED;
+			return;
+		}
+		res->dma_resource[i].start =(unsigned long) dma;
+		res->dma_resource[i].end = (unsigned long) dma;
+	}
+}
+
+static void
+pnpacpi_parse_allocated_ioresource(struct pnp_resource_table * res,
+	int io, int len)
+{
+	int i = 0;
+	while (!(res->port_resource[i].flags & IORESOURCE_UNSET) &&
+			i < PNP_MAX_PORT)
+		i++;
+	if (i < PNP_MAX_PORT) {
+		res->port_resource[i].flags = IORESOURCE_IO;  // Also clears _UNSET flag
+		if (len <= 0 || (io + len -1) >= 0x10003) {
+			res->port_resource[i].flags |= IORESOURCE_DISABLED;
+			return;
+		}
+		res->port_resource[i].start = (unsigned long) io;
+		res->port_resource[i].end = (unsigned long)(io + len - 1);
+	}
+}
+
+static void
+pnpacpi_parse_allocated_memresource(struct pnp_resource_table * res,
+	int mem, int len)
+{
+	int i = 0;
+	while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) &&
+			(i < PNP_MAX_MEM))
+		i++;
+	if (i < PNP_MAX_MEM) {
+		res->mem_resource[i].flags = IORESOURCE_MEM;  // Also clears _UNSET flag
+		if (len <= 0) {
+			res->mem_resource[i].flags |= IORESOURCE_DISABLED;
+			return;
+		}
+		res->mem_resource[i].start = (unsigned long) mem;
+		res->mem_resource[i].end = (unsigned long)(mem + len - 1);
+	}
+}
+
+
+static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
+	void *data)
+{
+	struct pnp_resource_table * res_table = (struct pnp_resource_table *)data;
+
+	switch (res->id) {
+	case ACPI_RSTYPE_IRQ:
+		if ((res->data.irq.number_of_interrupts > 0) &&
+			valid_IRQ(res->data.irq.interrupts[0])) {
+			pnpacpi_parse_allocated_irqresource(res_table, 
+				acpi_register_gsi(res->data.irq.interrupts[0],
+					res->data.irq.edge_level,
+					res->data.irq.active_high_low));
+			pcibios_penalize_isa_irq(res->data.irq.interrupts[0]);
+		}
+		break;
+
+	case ACPI_RSTYPE_EXT_IRQ:
+		if ((res->data.extended_irq.number_of_interrupts > 0) &&
+			valid_IRQ(res->data.extended_irq.interrupts[0])) {
+			pnpacpi_parse_allocated_irqresource(res_table, 
+				acpi_register_gsi(res->data.extended_irq.interrupts[0],
+					res->data.extended_irq.edge_level,
+					res->data.extended_irq.active_high_low));
+			pcibios_penalize_isa_irq(res->data.extended_irq.interrupts[0]);
+		}
+		break;
+	case ACPI_RSTYPE_DMA:
+		if (res->data.dma.number_of_channels > 0)
+			pnpacpi_parse_allocated_dmaresource(res_table, 
+					res->data.dma.channels[0]);
+		break;
+	case ACPI_RSTYPE_IO:
+		pnpacpi_parse_allocated_ioresource(res_table, 
+				res->data.io.min_base_address, 
+				res->data.io.range_length);
+		break;
+	case ACPI_RSTYPE_FIXED_IO:
+		pnpacpi_parse_allocated_ioresource(res_table, 
+				res->data.fixed_io.base_address, 
+				res->data.fixed_io.range_length);
+		break;
+	case ACPI_RSTYPE_MEM24:
+		pnpacpi_parse_allocated_memresource(res_table, 
+				res->data.memory24.min_base_address, 
+				res->data.memory24.range_length);
+		break;
+	case ACPI_RSTYPE_MEM32:
+		pnpacpi_parse_allocated_memresource(res_table, 
+				res->data.memory32.min_base_address, 
+				res->data.memory32.range_length);
+		break;
+	case ACPI_RSTYPE_FIXED_MEM32:
+		pnpacpi_parse_allocated_memresource(res_table, 
+				res->data.fixed_memory32.range_base_address, 
+				res->data.fixed_memory32.range_length);
+		break;
+	case ACPI_RSTYPE_ADDRESS16:
+		pnpacpi_parse_allocated_memresource(res_table, 
+				res->data.address16.min_address_range, 
+				res->data.address16.address_length);
+		break;
+	case ACPI_RSTYPE_ADDRESS32:
+		pnpacpi_parse_allocated_memresource(res_table, 
+				res->data.address32.min_address_range, 
+				res->data.address32.address_length);
+		break;
+	case ACPI_RSTYPE_ADDRESS64:
+		pnpacpi_parse_allocated_memresource(res_table, 
+		res->data.address64.min_address_range, 
+		res->data.address64.address_length);
+		break;
+	case ACPI_RSTYPE_VENDOR:
+		break;
+	default:
+		pnp_warn("PnPACPI: unknown resource type %d", res->id);
+		return AE_ERROR;
+	}
+			
+	return AE_OK;
+}
+
+acpi_status pnpacpi_parse_allocated_resource(acpi_handle handle, struct pnp_resource_table * res)
+{
+	/* Blank the resource table values */
+	pnp_init_resource_table(res);
+
+	return acpi_walk_resources(handle, METHOD_NAME__CRS, pnpacpi_allocated_resource, res);
+}
+
+static void pnpacpi_parse_dma_option(struct pnp_option *option, struct acpi_resource_dma *p)
+{
+	int i;
+	struct pnp_dma * dma;
+
+	if (p->number_of_channels == 0)
+		return;
+	dma = pnpacpi_kmalloc(sizeof(struct pnp_dma), GFP_KERNEL);
+	if (!dma)
+		return;
+
+	for(i = 0; i < p->number_of_channels; i++)
+		dma->map |= 1 << p->channels[i];
+	dma->flags = 0;
+	if (p->bus_master)
+		dma->flags |= IORESOURCE_DMA_MASTER;
+	switch (p->type) {
+	case ACPI_COMPATIBILITY:
+		dma->flags |= IORESOURCE_DMA_COMPATIBLE;
+		break;
+	case ACPI_TYPE_A:
+		dma->flags |= IORESOURCE_DMA_TYPEA;
+		break;
+	case ACPI_TYPE_B:
+		dma->flags |= IORESOURCE_DMA_TYPEB;
+		break;
+	case ACPI_TYPE_F:
+		dma->flags |= IORESOURCE_DMA_TYPEF;
+		break;
+	default:
+		/* Set a default value ? */
+		dma->flags |= IORESOURCE_DMA_COMPATIBLE;
+		pnp_err("Invalid DMA type");
+	}
+	switch (p->transfer) {
+	case ACPI_TRANSFER_8:
+		dma->flags |= IORESOURCE_DMA_8BIT;
+		break;
+	case ACPI_TRANSFER_8_16:
+		dma->flags |= IORESOURCE_DMA_8AND16BIT;
+		break;
+	case ACPI_TRANSFER_16:
+		dma->flags |= IORESOURCE_DMA_16BIT;
+		break;
+	default:
+		/* Set a default value ? */
+		dma->flags |= IORESOURCE_DMA_8AND16BIT;
+		pnp_err("Invalid DMA transfer type");
+	}
+
+	pnp_register_dma_resource(option,dma);
+	return;
+}
+
+	
+static void pnpacpi_parse_irq_option(struct pnp_option *option,
+	struct acpi_resource_irq *p)
+{
+	int i;
+	struct pnp_irq * irq;
+	
+	if (p->number_of_interrupts == 0)
+		return;
+	irq = pnpacpi_kmalloc(sizeof(struct pnp_irq), GFP_KERNEL);
+	if (!irq)
+		return;
+
+	for(i = 0; i < p->number_of_interrupts; i++)
+		if (p->interrupts[i])
+			__set_bit(p->interrupts[i], irq->map);
+	irq->flags = irq_flags(p->edge_level, p->active_high_low);
+
+	pnp_register_irq_resource(option, irq);
+	return;
+}
+
+static void pnpacpi_parse_ext_irq_option(struct pnp_option *option,
+	struct acpi_resource_ext_irq *p)
+{
+	int i;
+	struct pnp_irq * irq;
+
+	if (p->number_of_interrupts == 0)
+		return;
+	irq = pnpacpi_kmalloc(sizeof(struct pnp_irq), GFP_KERNEL);
+	if (!irq)
+		return;
+
+	for(i = 0; i < p->number_of_interrupts; i++)
+		if (p->interrupts[i])
+			__set_bit(p->interrupts[i], irq->map);
+	irq->flags = irq_flags(p->edge_level, p->active_high_low);
+
+	pnp_register_irq_resource(option, irq);
+	return;
+}
+
+static void
+pnpacpi_parse_port_option(struct pnp_option *option,
+	struct acpi_resource_io *io)
+{
+	struct pnp_port * port;
+
+	if (io->range_length == 0)
+		return;
+	port = pnpacpi_kmalloc(sizeof(struct pnp_port), GFP_KERNEL);
+	if (!port)
+		return;
+	port->min = io->min_base_address;
+	port->max = io->max_base_address;
+	port->align = io->alignment;
+	port->size = io->range_length;
+	port->flags = ACPI_DECODE_16 == io->io_decode ? 
+		PNP_PORT_FLAG_16BITADDR : 0;
+	pnp_register_port_resource(option,port);
+	return;
+}
+
+static void
+pnpacpi_parse_fixed_port_option(struct pnp_option *option,
+	struct acpi_resource_fixed_io *io)
+{
+	struct pnp_port * port;
+
+	if (io->range_length == 0)
+		return;
+	port = pnpacpi_kmalloc(sizeof(struct pnp_port), GFP_KERNEL);
+	if (!port)
+		return;
+	port->min = port->max = io->base_address;
+	port->size = io->range_length;
+	port->align = 0;
+	port->flags = PNP_PORT_FLAG_FIXED;
+	pnp_register_port_resource(option,port);
+	return;
+}
+
+static void
+pnpacpi_parse_mem24_option(struct pnp_option *option,
+	struct acpi_resource_mem24 *p)
+{
+	struct pnp_mem * mem;
+
+	if (p->range_length == 0)
+		return;
+	mem = pnpacpi_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL);
+	if (!mem)
+		return;
+	mem->min = p->min_base_address;
+	mem->max = p->max_base_address;
+	mem->align = p->alignment;
+	mem->size = p->range_length;
+
+	mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ?
+			IORESOURCE_MEM_WRITEABLE : 0;
+
+	pnp_register_mem_resource(option,mem);
+	return;
+}
+
+static void
+pnpacpi_parse_mem32_option(struct pnp_option *option,
+	struct acpi_resource_mem32 *p)
+{
+	struct pnp_mem * mem;
+
+	if (p->range_length == 0)
+		return;
+	mem = pnpacpi_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL);
+	if (!mem)
+		return;
+	mem->min = p->min_base_address;
+	mem->max = p->max_base_address;
+	mem->align = p->alignment;
+	mem->size = p->range_length;
+
+	mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ?
+			IORESOURCE_MEM_WRITEABLE : 0;
+
+	pnp_register_mem_resource(option,mem);
+	return;
+}
+
+static void
+pnpacpi_parse_fixed_mem32_option(struct pnp_option *option,
+	struct acpi_resource_fixed_mem32 *p)
+{
+	struct pnp_mem * mem;
+
+	if (p->range_length == 0)
+		return;
+	mem = pnpacpi_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL);
+	if (!mem)
+		return;
+	mem->min = mem->max = p->range_base_address;
+	mem->size = p->range_length;
+	mem->align = 0;
+
+	mem->flags = (ACPI_READ_WRITE_MEMORY == p->read_write_attribute) ?
+			IORESOURCE_MEM_WRITEABLE : 0;
+
+	pnp_register_mem_resource(option,mem);
+	return;
+}
+
+struct acpipnp_parse_option_s {
+	struct pnp_option *option;
+	struct pnp_dev *dev;
+};
+
+static acpi_status pnpacpi_option_resource(struct acpi_resource *res, 
+	void *data)
+{
+	int priority = 0;
+	struct acpipnp_parse_option_s *parse_data = (struct acpipnp_parse_option_s *)data;
+	struct pnp_dev *dev = parse_data->dev;
+	struct pnp_option *option = parse_data->option;
+
+	switch (res->id) {
+		case ACPI_RSTYPE_IRQ:
+			pnpacpi_parse_irq_option(option, &res->data.irq);
+			break;
+		case ACPI_RSTYPE_EXT_IRQ:
+			pnpacpi_parse_ext_irq_option(option,
+				&res->data.extended_irq);
+			break;
+		case ACPI_RSTYPE_DMA:
+			pnpacpi_parse_dma_option(option, &res->data.dma);	
+			break;
+		case ACPI_RSTYPE_IO:
+			pnpacpi_parse_port_option(option, &res->data.io);
+			break;
+		case ACPI_RSTYPE_FIXED_IO:
+			pnpacpi_parse_fixed_port_option(option,
+				&res->data.fixed_io);
+			break;
+		case ACPI_RSTYPE_MEM24:
+			pnpacpi_parse_mem24_option(option, &res->data.memory24);
+			break;
+		case ACPI_RSTYPE_MEM32:
+			pnpacpi_parse_mem32_option(option, &res->data.memory32);
+			break;
+		case ACPI_RSTYPE_FIXED_MEM32:
+			pnpacpi_parse_fixed_mem32_option(option,
+				&res->data.fixed_memory32);
+			break;
+		case ACPI_RSTYPE_START_DPF:
+			switch (res->data.start_dpf.compatibility_priority) {
+				case ACPI_GOOD_CONFIGURATION:
+					priority = PNP_RES_PRIORITY_PREFERRED;
+					break;
+					
+				case ACPI_ACCEPTABLE_CONFIGURATION:
+					priority = PNP_RES_PRIORITY_ACCEPTABLE;
+					break;
+
+				case ACPI_SUB_OPTIMAL_CONFIGURATION:
+					priority = PNP_RES_PRIORITY_FUNCTIONAL;
+					break;
+				default:
+					priority = PNP_RES_PRIORITY_INVALID;
+					break;
+			}
+			/* TBD: Considering performace/robustness bits */
+			option = pnp_register_dependent_option(dev, priority);
+			if (!option)
+				return AE_ERROR;
+			parse_data->option = option;	
+			break;
+		case ACPI_RSTYPE_END_DPF:
+			return AE_CTRL_TERMINATE;
+		default:
+			pnp_warn("PnPACPI: unknown resource type %d", res->id);
+			return AE_ERROR;
+	}
+			
+	return AE_OK;
+}
+
+acpi_status pnpacpi_parse_resource_option_data(acpi_handle handle, 
+	struct pnp_dev *dev)
+{
+	acpi_status status;
+	struct acpipnp_parse_option_s parse_data;
+
+	parse_data.option = pnp_register_independent_option(dev);
+	if (!parse_data.option)
+		return AE_ERROR;
+	parse_data.dev = dev;
+	status = acpi_walk_resources(handle, METHOD_NAME__PRS, 
+		pnpacpi_option_resource, &parse_data);
+
+	return status;
+}
+
+/*
+ * Set resource
+ */
+static acpi_status pnpacpi_count_resources(struct acpi_resource *res,
+	void *data)
+{
+	int *res_cnt = (int *)data;
+	switch (res->id) {
+	case ACPI_RSTYPE_IRQ:
+	case ACPI_RSTYPE_EXT_IRQ:
+	case ACPI_RSTYPE_DMA:
+	case ACPI_RSTYPE_IO:
+	case ACPI_RSTYPE_FIXED_IO:
+	case ACPI_RSTYPE_MEM24:
+	case ACPI_RSTYPE_MEM32:
+	case ACPI_RSTYPE_FIXED_MEM32:
+#if 0
+	case ACPI_RSTYPE_ADDRESS16:
+	case ACPI_RSTYPE_ADDRESS32:
+	case ACPI_RSTYPE_ADDRESS64:
+#endif
+		(*res_cnt) ++;
+	default:
+		return AE_OK;
+	}
+	return AE_OK;
+}
+
+static acpi_status pnpacpi_type_resources(struct acpi_resource *res,
+	void *data)
+{
+	struct acpi_resource **resource = (struct acpi_resource **)data;	
+	switch (res->id) {
+	case ACPI_RSTYPE_IRQ:
+	case ACPI_RSTYPE_EXT_IRQ:
+	case ACPI_RSTYPE_DMA:
+	case ACPI_RSTYPE_IO:
+	case ACPI_RSTYPE_FIXED_IO:
+	case ACPI_RSTYPE_MEM24:
+	case ACPI_RSTYPE_MEM32:
+	case ACPI_RSTYPE_FIXED_MEM32:
+#if 0
+	case ACPI_RSTYPE_ADDRESS16:
+	case ACPI_RSTYPE_ADDRESS32:
+	case ACPI_RSTYPE_ADDRESS64:
+#endif
+		(*resource)->id = res->id;
+		(*resource)++;
+	default:
+		return AE_OK;
+	}
+
+	return AE_OK;
+}
+
+int pnpacpi_build_resource_template(acpi_handle handle, 
+	struct acpi_buffer *buffer)
+{
+	struct acpi_resource *resource;
+	int res_cnt = 0;
+	acpi_status status;
+
+	status = acpi_walk_resources(handle, METHOD_NAME__CRS, 
+		pnpacpi_count_resources, &res_cnt);
+	if (ACPI_FAILURE(status)) {
+		pnp_err("Evaluate _CRS failed");
+		return -EINVAL;
+	}
+	if (!res_cnt)
+		return -EINVAL;
+	buffer->length = sizeof(struct acpi_resource) * (res_cnt + 1) + 1;
+	buffer->pointer = pnpacpi_kmalloc(buffer->length - 1, GFP_KERNEL);
+	if (!buffer->pointer)
+		return -ENOMEM;
+	pnp_dbg("Res cnt %d", res_cnt);
+	resource = (struct acpi_resource *)buffer->pointer;
+	status = acpi_walk_resources(handle, METHOD_NAME__CRS, 
+		pnpacpi_type_resources, &resource);
+	if (ACPI_FAILURE(status)) {
+		kfree(buffer->pointer);
+		pnp_err("Evaluate _CRS failed");
+		return -EINVAL;
+	}
+	/* resource will pointer the end resource now */
+	resource->id = ACPI_RSTYPE_END_TAG;
+
+	return 0;
+}
+
+static void pnpacpi_encode_irq(struct acpi_resource *resource, 
+	struct resource *p)
+{
+	int edge_level, active_high_low;
+	
+	decode_irq_flags(p->flags & IORESOURCE_BITS, &edge_level, 
+		&active_high_low);
+	resource->id = ACPI_RSTYPE_IRQ;
+	resource->length = sizeof(struct acpi_resource);
+	resource->data.irq.edge_level = edge_level;
+	resource->data.irq.active_high_low = active_high_low;
+	if (edge_level == ACPI_EDGE_SENSITIVE)
+		resource->data.irq.shared_exclusive = ACPI_EXCLUSIVE;
+	else
+		resource->data.irq.shared_exclusive = ACPI_SHARED;
+	resource->data.irq.number_of_interrupts = 1;
+	resource->data.irq.interrupts[0] = p->start;
+}
+
+static void pnpacpi_encode_ext_irq(struct acpi_resource *resource,
+	struct resource *p)
+{
+	int edge_level, active_high_low;
+	
+	decode_irq_flags(p->flags & IORESOURCE_BITS, &edge_level, 
+		&active_high_low);
+	resource->id = ACPI_RSTYPE_EXT_IRQ;
+	resource->length = sizeof(struct acpi_resource);
+	resource->data.extended_irq.producer_consumer = ACPI_CONSUMER;
+	resource->data.extended_irq.edge_level = edge_level;
+	resource->data.extended_irq.active_high_low = active_high_low;
+	if (edge_level == ACPI_EDGE_SENSITIVE)
+		resource->data.irq.shared_exclusive = ACPI_EXCLUSIVE;
+	else
+		resource->data.irq.shared_exclusive = ACPI_SHARED;
+	resource->data.extended_irq.number_of_interrupts = 1;
+	resource->data.extended_irq.interrupts[0] = p->start;
+}
+
+static void pnpacpi_encode_dma(struct acpi_resource *resource,
+	struct resource *p)
+{
+	resource->id = ACPI_RSTYPE_DMA;
+	resource->length = sizeof(struct acpi_resource);
+	/* Note: pnp_assign_dma will copy pnp_dma->flags into p->flags */
+	if (p->flags & IORESOURCE_DMA_COMPATIBLE)
+		resource->data.dma.type = ACPI_COMPATIBILITY;
+	else if (p->flags & IORESOURCE_DMA_TYPEA)
+		resource->data.dma.type = ACPI_TYPE_A;
+	else if (p->flags & IORESOURCE_DMA_TYPEB)
+		resource->data.dma.type = ACPI_TYPE_B;
+	else if (p->flags & IORESOURCE_DMA_TYPEF)
+		resource->data.dma.type = ACPI_TYPE_F;
+	if (p->flags & IORESOURCE_DMA_8BIT)
+		resource->data.dma.transfer = ACPI_TRANSFER_8;
+	else if (p->flags & IORESOURCE_DMA_8AND16BIT)
+		resource->data.dma.transfer = ACPI_TRANSFER_8_16;
+	else if (p->flags & IORESOURCE_DMA_16BIT)
+		resource->data.dma.transfer = ACPI_TRANSFER_16;
+	resource->data.dma.bus_master = p->flags & IORESOURCE_DMA_MASTER;
+	resource->data.dma.number_of_channels = 1;
+	resource->data.dma.channels[0] = p->start;
+}
+
+static void pnpacpi_encode_io(struct acpi_resource *resource,
+	struct resource *p)
+{
+	resource->id = ACPI_RSTYPE_IO;
+	resource->length = sizeof(struct acpi_resource);
+	/* Note: pnp_assign_port will copy pnp_port->flags into p->flags */
+	resource->data.io.io_decode = (p->flags & PNP_PORT_FLAG_16BITADDR)?
+		ACPI_DECODE_16 : ACPI_DECODE_10; 
+	resource->data.io.min_base_address = p->start;
+	resource->data.io.max_base_address = p->end;
+	resource->data.io.alignment = 0; /* Correct? */
+	resource->data.io.range_length = p->end - p->start + 1;
+}
+
+static void pnpacpi_encode_fixed_io(struct acpi_resource *resource,
+	struct resource *p)
+{
+	resource->id = ACPI_RSTYPE_FIXED_IO;
+	resource->length = sizeof(struct acpi_resource);
+	resource->data.fixed_io.base_address = p->start;
+	resource->data.fixed_io.range_length = p->end - p->start + 1;
+}
+
+static void pnpacpi_encode_mem24(struct acpi_resource *resource,
+	struct resource *p)
+{
+	resource->id = ACPI_RSTYPE_MEM24;
+	resource->length = sizeof(struct acpi_resource);
+	/* Note: pnp_assign_mem will copy pnp_mem->flags into p->flags */
+	resource->data.memory24.read_write_attribute =
+		(p->flags & IORESOURCE_MEM_WRITEABLE) ?
+		ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
+	resource->data.memory24.min_base_address = p->start;
+	resource->data.memory24.max_base_address = p->end;
+	resource->data.memory24.alignment = 0;
+	resource->data.memory24.range_length = p->end - p->start + 1;
+}
+
+static void pnpacpi_encode_mem32(struct acpi_resource *resource,
+	struct resource *p)
+{
+	resource->id = ACPI_RSTYPE_MEM32;
+	resource->length = sizeof(struct acpi_resource);
+	resource->data.memory32.read_write_attribute =
+		(p->flags & IORESOURCE_MEM_WRITEABLE) ?
+		ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
+	resource->data.memory32.min_base_address = p->start;
+	resource->data.memory32.max_base_address = p->end;
+	resource->data.memory32.alignment = 0;
+	resource->data.memory32.range_length = p->end - p->start + 1;
+}
+
+static void pnpacpi_encode_fixed_mem32(struct acpi_resource *resource,
+	struct resource *p)
+{
+	resource->id = ACPI_RSTYPE_FIXED_MEM32;
+	resource->length = sizeof(struct acpi_resource);
+	resource->data.fixed_memory32.read_write_attribute =
+		(p->flags & IORESOURCE_MEM_WRITEABLE) ?
+		ACPI_READ_WRITE_MEMORY : ACPI_READ_ONLY_MEMORY;
+	resource->data.fixed_memory32.range_base_address = p->start;
+	resource->data.fixed_memory32.range_length = p->end - p->start + 1;
+}
+
+int pnpacpi_encode_resources(struct pnp_resource_table *res_table, 
+	struct acpi_buffer *buffer)
+{
+	int i = 0;
+	/* pnpacpi_build_resource_template allocates extra mem */
+	int res_cnt = (buffer->length - 1)/sizeof(struct acpi_resource) - 1;
+	struct acpi_resource *resource = (struct acpi_resource*)buffer->pointer;
+	int port = 0, irq = 0, dma = 0, mem = 0;
+
+	pnp_dbg("res cnt %d", res_cnt);
+	while (i < res_cnt) {
+		switch(resource->id) {
+		case ACPI_RSTYPE_IRQ:
+			pnp_dbg("Encode irq");
+			pnpacpi_encode_irq(resource, 
+				&res_table->irq_resource[irq]);
+			irq++;
+			break;
+
+		case ACPI_RSTYPE_EXT_IRQ:
+			pnp_dbg("Encode ext irq");
+			pnpacpi_encode_ext_irq(resource, 
+				&res_table->irq_resource[irq]);
+			irq++;
+			break;
+		case ACPI_RSTYPE_DMA:
+			pnp_dbg("Encode dma");
+			pnpacpi_encode_dma(resource, 
+				&res_table->dma_resource[dma]);
+			dma ++;
+			break;
+		case ACPI_RSTYPE_IO:
+			pnp_dbg("Encode io");
+			pnpacpi_encode_io(resource, 
+				&res_table->port_resource[port]);
+			port ++;
+			break;
+		case ACPI_RSTYPE_FIXED_IO:
+			pnp_dbg("Encode fixed io");
+			pnpacpi_encode_fixed_io(resource,
+				&res_table->port_resource[port]);
+			port ++;
+			break;
+		case ACPI_RSTYPE_MEM24:
+			pnp_dbg("Encode mem24");
+			pnpacpi_encode_mem24(resource,
+				&res_table->mem_resource[mem]);
+			mem ++;
+			break;
+		case ACPI_RSTYPE_MEM32:
+			pnp_dbg("Encode mem32");
+			pnpacpi_encode_mem32(resource,
+				&res_table->mem_resource[mem]);
+			mem ++;
+			break;
+		case ACPI_RSTYPE_FIXED_MEM32:
+			pnp_dbg("Encode fixed mem32");
+			pnpacpi_encode_fixed_mem32(resource,
+				&res_table->mem_resource[mem]);
+			mem ++;
+			break;
+		default: /* other type */
+			pnp_warn("unknown resource type %d", resource->id);
+			return -EINVAL;
+		}
+		resource ++;
+		i ++;
+	}
+	return 0;
+}

drivers/pnp/pnpbios/Kconfig

@@ -0,0 +1,42 @@
+#
+# Plug and Play BIOS configuration
+#
+config PNPBIOS
+	bool "Plug and Play BIOS support (EXPERIMENTAL)"
+	depends on PNP && ISA && X86 && EXPERIMENTAL
+	default n
+	---help---
+	  Linux uses the PNPBIOS as defined in "Plug and Play BIOS
+	  Specification Version 1.0A May 5, 1994" to autodetect built-in
+	  mainboard resources (e.g. parallel port resources).
+
+	  Some features (e.g. event notification, docking station information,
+	  ISAPNP services) are not currently implemented.
+
+	  If you would like the kernel to detect and allocate resources to
+	  your mainboard devices (on some systems they are disabled by the
+	  BIOS) say Y here.  Also the PNPBIOS can help prevent resource
+	  conflicts between mainboard devices and other bus devices.
+
+	  Note: ACPI is expected to supersede PNPBIOS some day, currently it
+	  co-exists nicely.  If you have a non-ISA system that supports ACPI,
+	  you probably don't need PNPBIOS support.
+
+config PNPBIOS_PROC_FS
+	bool "Plug and Play BIOS /proc interface"
+	depends on PNPBIOS && PROC_FS
+	---help---
+	  If you say Y here and to "/proc file system support", you will be
+	  able to directly access the PNPBIOS.  This includes resource
+	  allocation, ESCD, and other PNPBIOS services.  Using this
+	  interface is potentially dangerous because the PNPBIOS driver will
+	  not be notified of any resource changes made by writing directly.
+	  Also some buggy systems will fault when accessing certain features
+	  in the PNPBIOS /proc interface (e.g. "boot" configs).
+
+	  See the latest pcmcia-cs (stand-alone package) for a nice set of
+	  PNPBIOS /proc interface tools (lspnp and setpnp).
+
+	  Unless you are debugging or have other specific reasons, it is
+	  recommended that you say N here.
+

drivers/pnp/pnpbios/Makefile

@@ -0,0 +1,7 @@
+#
+# Makefile for the kernel PNPBIOS driver.
+#
+
+pnpbios-proc-$(CONFIG_PNPBIOS_PROC_FS) = proc.o
+
+obj-y := core.o bioscalls.o rsparser.o $(pnpbios-proc-y)

drivers/pnp/pnpbios/bioscalls.c

@@ -0,0 +1,544 @@
+/*
+ * bioscalls.c - the lowlevel layer of the PnPBIOS driver
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/linkage.h>
+#include <linux/kernel.h>
+#include <linux/pnpbios.h>
+#include <linux/device.h>
+#include <linux/pnp.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/slab.h>
+#include <linux/kmod.h>
+#include <linux/completion.h>
+#include <linux/spinlock.h>
+
+#include <asm/page.h>
+#include <asm/desc.h>
+#include <asm/system.h>
+#include <asm/byteorder.h>
+
+#include "pnpbios.h"
+
+static struct {
+	u16	offset;
+	u16	segment;
+} pnp_bios_callpoint;
+
+
+/* The PnP BIOS entries in the GDT */
+#define PNP_GDT    (GDT_ENTRY_PNPBIOS_BASE * 8)
+
+#define PNP_CS32   (PNP_GDT+0x00)	/* segment for calling fn */
+#define PNP_CS16   (PNP_GDT+0x08)	/* code segment for BIOS */
+#define PNP_DS     (PNP_GDT+0x10)	/* data segment for BIOS */
+#define PNP_TS1    (PNP_GDT+0x18)	/* transfer data segment */
+#define PNP_TS2    (PNP_GDT+0x20)	/* another data segment */
+
+/*
+ * These are some opcodes for a "static asmlinkage"
+ * As this code is *not* executed inside the linux kernel segment, but in a
+ * alias at offset 0, we need a far return that can not be compiled by
+ * default (please, prove me wrong! this is *really* ugly!)
+ * This is the only way to get the bios to return into the kernel code,
+ * because the bios code runs in 16 bit protected mode and therefore can only
+ * return to the caller if the call is within the first 64kB, and the linux
+ * kernel begins at offset 3GB...
+ */
+
+asmlinkage void pnp_bios_callfunc(void);
+
+__asm__(
+	".text			\n"
+	__ALIGN_STR "\n"
+	"pnp_bios_callfunc:\n"
+	"	pushl %edx	\n"
+	"	pushl %ecx	\n"
+	"	pushl %ebx	\n"
+	"	pushl %eax	\n"
+	"	lcallw *pnp_bios_callpoint\n"
+	"	addl $16, %esp	\n"
+	"	lret		\n"
+	".previous		\n"
+);
+
+#define Q_SET_SEL(cpu, selname, address, size) \
+do { \
+set_base(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], __va((u32)(address))); \
+set_limit(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], size); \
+} while(0)
+
+#define Q2_SET_SEL(cpu, selname, address, size) \
+do { \
+set_base(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], (u32)(address)); \
+set_limit(per_cpu(cpu_gdt_table,cpu)[(selname) >> 3], size); \
+} while(0)
+
+static struct desc_struct bad_bios_desc = { 0, 0x00409200 };
+
+/*
+ * At some point we want to use this stack frame pointer to unwind
+ * after PnP BIOS oopses.
+ */
+
+u32 pnp_bios_fault_esp;
+u32 pnp_bios_fault_eip;
+u32 pnp_bios_is_utter_crap = 0;
+
+static spinlock_t pnp_bios_lock;
+
+
+/*
+ * Support Functions
+ */
+
+static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3,
+				u16 arg4, u16 arg5, u16 arg6, u16 arg7,
+				void *ts1_base, u32 ts1_size,
+				void *ts2_base, u32 ts2_size)
+{
+	unsigned long flags;
+	u16 status;
+	struct desc_struct save_desc_40;
+	int cpu;
+
+	/*
+	 * PnP BIOSes are generally not terribly re-entrant.
+	 * Also, don't rely on them to save everything correctly.
+	 */
+	if(pnp_bios_is_utter_crap)
+		return PNP_FUNCTION_NOT_SUPPORTED;
+
+	cpu = get_cpu();
+	save_desc_40 = per_cpu(cpu_gdt_table,cpu)[0x40 / 8];
+	per_cpu(cpu_gdt_table,cpu)[0x40 / 8] = bad_bios_desc;
+
+	/* On some boxes IRQ's during PnP BIOS calls are deadly.  */
+	spin_lock_irqsave(&pnp_bios_lock, flags);
+
+	/* The lock prevents us bouncing CPU here */
+	if (ts1_size)
+		Q2_SET_SEL(smp_processor_id(), PNP_TS1, ts1_base, ts1_size);
+	if (ts2_size)
+		Q2_SET_SEL(smp_processor_id(), PNP_TS2, ts2_base, ts2_size);
+
+	__asm__ __volatile__(
+	        "pushl %%ebp\n\t"
+		"pushl %%edi\n\t"
+		"pushl %%esi\n\t"
+		"pushl %%ds\n\t"
+		"pushl %%es\n\t"
+		"pushl %%fs\n\t"
+		"pushl %%gs\n\t"
+		"pushfl\n\t"
+		"movl %%esp, pnp_bios_fault_esp\n\t"
+		"movl $1f, pnp_bios_fault_eip\n\t"
+		"lcall %5,%6\n\t"
+		"1:popfl\n\t"
+		"popl %%gs\n\t"
+		"popl %%fs\n\t"
+		"popl %%es\n\t"
+		"popl %%ds\n\t"
+	        "popl %%esi\n\t"
+		"popl %%edi\n\t"
+		"popl %%ebp\n\t"
+		: "=a" (status)
+		: "0" ((func) | (((u32)arg1) << 16)),
+		  "b" ((arg2) | (((u32)arg3) << 16)),
+		  "c" ((arg4) | (((u32)arg5) << 16)),
+		  "d" ((arg6) | (((u32)arg7) << 16)),
+		  "i" (PNP_CS32),
+		  "i" (0)
+		: "memory"
+	);
+	spin_unlock_irqrestore(&pnp_bios_lock, flags);
+
+	per_cpu(cpu_gdt_table,cpu)[0x40 / 8] = save_desc_40;
+	put_cpu();
+
+	/* If we get here and this is set then the PnP BIOS faulted on us. */
+	if(pnp_bios_is_utter_crap)
+	{
+		printk(KERN_ERR "PnPBIOS: Warning! Your PnP BIOS caused a fatal error. Attempting to continue\n");
+		printk(KERN_ERR "PnPBIOS: You may need to reboot with the \"pnpbios=off\" option to operate stably\n");
+		printk(KERN_ERR "PnPBIOS: Check with your vendor for an updated BIOS\n");
+	}
+
+	return status;
+}
+
+void pnpbios_print_status(const char * module, u16 status)
+{
+	switch(status) {
+	case PNP_SUCCESS:
+		printk(KERN_ERR "PnPBIOS: %s: function successful\n", module);
+		break;
+	case PNP_NOT_SET_STATICALLY:
+		printk(KERN_ERR "PnPBIOS: %s: unable to set static resources\n", module);
+		break;
+	case PNP_UNKNOWN_FUNCTION:
+		printk(KERN_ERR "PnPBIOS: %s: invalid function number passed\n", module);
+		break;
+	case PNP_FUNCTION_NOT_SUPPORTED:
+		printk(KERN_ERR "PnPBIOS: %s: function not supported on this system\n", module);
+		break;
+	case PNP_INVALID_HANDLE:
+		printk(KERN_ERR "PnPBIOS: %s: invalid handle\n", module);
+		break;
+	case PNP_BAD_PARAMETER:
+		printk(KERN_ERR "PnPBIOS: %s: invalid parameters were passed\n", module);
+		break;
+	case PNP_SET_FAILED:
+		printk(KERN_ERR "PnPBIOS: %s: unable to set resources\n", module);
+		break;
+	case PNP_EVENTS_NOT_PENDING:
+		printk(KERN_ERR "PnPBIOS: %s: no events are pending\n", module);
+		break;
+	case PNP_SYSTEM_NOT_DOCKED:
+		printk(KERN_ERR "PnPBIOS: %s: the system is not docked\n", module);
+		break;
+	case PNP_NO_ISA_PNP_CARDS:
+		printk(KERN_ERR "PnPBIOS: %s: no isapnp cards are installed on this system\n", module);
+		break;
+	case PNP_UNABLE_TO_DETERMINE_DOCK_CAPABILITIES:
+		printk(KERN_ERR "PnPBIOS: %s: cannot determine the capabilities of the docking station\n", module);
+		break;
+	case PNP_CONFIG_CHANGE_FAILED_NO_BATTERY:
+		printk(KERN_ERR "PnPBIOS: %s: unable to undock, the system does not have a battery\n", module);
+		break;
+	case PNP_CONFIG_CHANGE_FAILED_RESOURCE_CONFLICT:
+		printk(KERN_ERR "PnPBIOS: %s: could not dock due to resource conflicts\n", module);
+		break;
+	case PNP_BUFFER_TOO_SMALL:
+		printk(KERN_ERR "PnPBIOS: %s: the buffer passed is too small\n", module);
+		break;
+	case PNP_USE_ESCD_SUPPORT:
+		printk(KERN_ERR "PnPBIOS: %s: use ESCD instead\n", module);
+		break;
+	case PNP_MESSAGE_NOT_SUPPORTED:
+		printk(KERN_ERR "PnPBIOS: %s: the message is unsupported\n", module);
+		break;
+	case PNP_HARDWARE_ERROR:
+		printk(KERN_ERR "PnPBIOS: %s: a hardware failure has occured\n", module);
+		break;
+	default:
+		printk(KERN_ERR "PnPBIOS: %s: unexpected status 0x%x\n", module, status);
+		break;
+	}
+}
+
+
+/*
+ * PnP BIOS Low Level Calls
+ */
+
+#define PNP_GET_NUM_SYS_DEV_NODES		0x00
+#define PNP_GET_SYS_DEV_NODE			0x01
+#define PNP_SET_SYS_DEV_NODE			0x02
+#define PNP_GET_EVENT				0x03
+#define PNP_SEND_MESSAGE			0x04
+#define PNP_GET_DOCKING_STATION_INFORMATION	0x05
+#define PNP_SET_STATIC_ALLOCED_RES_INFO		0x09
+#define PNP_GET_STATIC_ALLOCED_RES_INFO		0x0a
+#define PNP_GET_APM_ID_TABLE			0x0b
+#define PNP_GET_PNP_ISA_CONFIG_STRUC		0x40
+#define PNP_GET_ESCD_INFO			0x41
+#define PNP_READ_ESCD				0x42
+#define PNP_WRITE_ESCD				0x43
+
+/*
+ * Call PnP BIOS with function 0x00, "get number of system device nodes"
+ */
+static int __pnp_bios_dev_node_info(struct pnp_dev_node_info *data)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_GET_NUM_SYS_DEV_NODES, 0, PNP_TS1, 2, PNP_TS1, PNP_DS, 0, 0,
+			       data, sizeof(struct pnp_dev_node_info), NULL, 0);
+	data->no_nodes &= 0xff;
+	return status;
+}
+
+int pnp_bios_dev_node_info(struct pnp_dev_node_info *data)
+{
+	int status = __pnp_bios_dev_node_info( data );
+	if ( status )
+		pnpbios_print_status( "dev_node_info", status );
+	return status;
+}
+
+/*
+ * Note that some PnP BIOSes (e.g., on Sony Vaio laptops) die a horrible
+ * death if they are asked to access the "current" configuration.
+ * Therefore, if it's a matter of indifference, it's better to call
+ * get_dev_node() and set_dev_node() with boot=1 rather than with boot=0.
+ */
+
+/* 
+ * Call PnP BIOS with function 0x01, "get system device node"
+ * Input: *nodenum = desired node,
+ *        boot = whether to get nonvolatile boot (!=0)
+ *               or volatile current (0) config
+ * Output: *nodenum=next node or 0xff if no more nodes
+ */
+static int __pnp_bios_get_dev_node(u8 *nodenum, char boot, struct pnp_bios_node *data)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	if ( !boot && pnpbios_dont_use_current_config )
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_GET_SYS_DEV_NODE, 0, PNP_TS1, 0, PNP_TS2, boot ? 2 : 1, PNP_DS, 0,
+			       nodenum, sizeof(char), data, 65536);
+	return status;
+}
+
+int pnp_bios_get_dev_node(u8 *nodenum, char boot, struct pnp_bios_node *data)
+{
+	int status;
+	status =  __pnp_bios_get_dev_node( nodenum, boot, data );
+	if ( status )
+		pnpbios_print_status( "get_dev_node", status );
+	return status;
+}
+
+
+/*
+ * Call PnP BIOS with function 0x02, "set system device node"
+ * Input: *nodenum = desired node, 
+ *        boot = whether to set nonvolatile boot (!=0)
+ *               or volatile current (0) config
+ */
+static int __pnp_bios_set_dev_node(u8 nodenum, char boot, struct pnp_bios_node *data)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	if ( !boot && pnpbios_dont_use_current_config )
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_SET_SYS_DEV_NODE, nodenum, 0, PNP_TS1, boot ? 2 : 1, PNP_DS, 0, 0,
+			       data, 65536, NULL, 0);
+	return status;
+}
+
+int pnp_bios_set_dev_node(u8 nodenum, char boot, struct pnp_bios_node *data)
+{
+	int status;
+	status =  __pnp_bios_set_dev_node( nodenum, boot, data );
+	if ( status ) {
+		pnpbios_print_status( "set_dev_node", status );
+		return status;
+	}
+	if ( !boot ) { /* Update devlist */
+		status =  pnp_bios_get_dev_node( &nodenum, boot, data );
+		if ( status )
+			return status;
+	}
+	return status;
+}
+
+#if needed
+/*
+ * Call PnP BIOS with function 0x03, "get event"
+ */
+static int pnp_bios_get_event(u16 *event)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_GET_EVENT, 0, PNP_TS1, PNP_DS, 0, 0 ,0 ,0,
+			       event, sizeof(u16), NULL, 0);
+	return status;
+}
+#endif
+
+#if needed
+/*
+ * Call PnP BIOS with function 0x04, "send message"
+ */
+static int pnp_bios_send_message(u16 message)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_SEND_MESSAGE, message, PNP_DS, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+	return status;
+}
+#endif
+
+/*
+ * Call PnP BIOS with function 0x05, "get docking station information"
+ */
+int pnp_bios_dock_station_info(struct pnp_docking_station_info *data)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_GET_DOCKING_STATION_INFORMATION, 0, PNP_TS1, PNP_DS, 0, 0, 0, 0,
+			       data, sizeof(struct pnp_docking_station_info), NULL, 0);
+	return status;
+}
+
+#if needed
+/*
+ * Call PnP BIOS with function 0x09, "set statically allocated resource
+ * information"
+ */
+static int pnp_bios_set_stat_res(char *info)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_SET_STATIC_ALLOCED_RES_INFO, 0, PNP_TS1, PNP_DS, 0, 0, 0, 0,
+			       info, *((u16 *) info), 0, 0);
+	return status;
+}
+#endif
+
+/*
+ * Call PnP BIOS with function 0x0a, "get statically allocated resource
+ * information"
+ */
+static int __pnp_bios_get_stat_res(char *info)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_GET_STATIC_ALLOCED_RES_INFO, 0, PNP_TS1, PNP_DS, 0, 0, 0, 0,
+			       info, 65536, NULL, 0);
+	return status;
+}
+
+int pnp_bios_get_stat_res(char *info)
+{
+	int status;
+	status = __pnp_bios_get_stat_res( info );
+	if ( status )
+		pnpbios_print_status( "get_stat_res", status );
+	return status;
+}
+
+#if needed
+/*
+ * Call PnP BIOS with function 0x0b, "get APM id table"
+ */
+static int pnp_bios_apm_id_table(char *table, u16 *size)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_GET_APM_ID_TABLE, 0, PNP_TS2, 0, PNP_TS1, PNP_DS, 0, 0,
+			       table, *size, size, sizeof(u16));
+	return status;
+}
+#endif
+
+/*
+ * Call PnP BIOS with function 0x40, "get isa pnp configuration structure"
+ */
+static int __pnp_bios_isapnp_config(struct pnp_isa_config_struc *data)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return PNP_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_GET_PNP_ISA_CONFIG_STRUC, 0, PNP_TS1, PNP_DS, 0, 0, 0, 0,
+			       data, sizeof(struct pnp_isa_config_struc), NULL, 0);
+	return status;
+}
+
+int pnp_bios_isapnp_config(struct pnp_isa_config_struc *data)
+{
+	int status;
+	status = __pnp_bios_isapnp_config( data );
+	if ( status )
+		pnpbios_print_status( "isapnp_config", status );
+	return status;
+}
+
+/*
+ * Call PnP BIOS with function 0x41, "get ESCD info"
+ */
+static int __pnp_bios_escd_info(struct escd_info_struc *data)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return ESCD_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_GET_ESCD_INFO, 0, PNP_TS1, 2, PNP_TS1, 4, PNP_TS1, PNP_DS,
+			       data, sizeof(struct escd_info_struc), NULL, 0);
+	return status;
+}
+
+int pnp_bios_escd_info(struct escd_info_struc *data)
+{
+	int status;
+	status = __pnp_bios_escd_info( data );
+	if ( status )
+		pnpbios_print_status( "escd_info", status );
+	return status;
+}
+
+/*
+ * Call PnP BIOS function 0x42, "read ESCD"
+ * nvram_base is determined by calling escd_info
+ */
+static int __pnp_bios_read_escd(char *data, u32 nvram_base)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return ESCD_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_READ_ESCD, 0, PNP_TS1, PNP_TS2, PNP_DS, 0, 0, 0,
+			       data, 65536, __va(nvram_base), 65536);
+	return status;
+}
+
+int pnp_bios_read_escd(char *data, u32 nvram_base)
+{
+	int status;
+	status = __pnp_bios_read_escd( data, nvram_base );
+	if ( status )
+		pnpbios_print_status( "read_escd", status );
+	return status;
+}
+
+#if needed
+/*
+ * Call PnP BIOS function 0x43, "write ESCD"
+ */
+static int pnp_bios_write_escd(char *data, u32 nvram_base)
+{
+	u16 status;
+	if (!pnp_bios_present())
+		return ESCD_FUNCTION_NOT_SUPPORTED;
+	status = call_pnp_bios(PNP_WRITE_ESCD, 0, PNP_TS1, PNP_TS2, PNP_DS, 0, 0, 0,
+			       data, 65536, __va(nvram_base), 65536);
+	return status;
+}
+#endif
+
+
+/*
+ * Initialization
+ */
+
+void pnpbios_calls_init(union pnp_bios_install_struct *header)
+{
+	int i;
+	spin_lock_init(&pnp_bios_lock);
+	pnp_bios_callpoint.offset = header->fields.pm16offset;
+	pnp_bios_callpoint.segment = PNP_CS16;
+
+	set_base(bad_bios_desc, __va((unsigned long)0x40 << 4));
+	_set_limit((char *)&bad_bios_desc, 4095 - (0x40 << 4));
+	for(i=0; i < NR_CPUS; i++)
+	{
+		Q2_SET_SEL(i, PNP_CS32, &pnp_bios_callfunc, 64 * 1024);
+		Q_SET_SEL(i, PNP_CS16, header->fields.pm16cseg, 64 * 1024);
+		Q_SET_SEL(i, PNP_DS, header->fields.pm16dseg, 64 * 1024);
+	}
+}

drivers/pnp/pnpbios/core.c

@@ -0,0 +1,644 @@
+/*
+ * pnpbios -- PnP BIOS driver
+ *
+ * This driver provides access to Plug-'n'-Play services provided by
+ * the PnP BIOS firmware, described in the following documents:
+ *   Plug and Play BIOS Specification, Version 1.0A, 5 May 1994
+ *   Plug and Play BIOS Clarification Paper, 6 October 1994
+ *     Compaq Computer Corporation, Phoenix Technologies Ltd., Intel Corp.
+ * 
+ * Originally (C) 1998 Christian Schmidt <schmidt@digadd.de>
+ * Modifications (C) 1998 Tom Lees <tom@lpsg.demon.co.uk>
+ * Minor reorganizations by David Hinds <dahinds@users.sourceforge.net>
+ * Further modifications (C) 2001, 2002 by:
+ *   Alan Cox <alan@redhat.com>
+ *   Thomas Hood
+ *   Brian Gerst <bgerst@didntduck.org>
+ *
+ * Ported to the PnP Layer and several additional improvements (C) 2002
+ * by Adam Belay <ambx1@neo.rr.com>
+ *
+ * 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, 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.  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+ 
+/* Change Log
+ *
+ * Adam Belay - <ambx1@neo.rr.com> - March 16, 2003
+ * rev 1.01	Only call pnp_bios_dev_node_info once
+ *		Added pnpbios_print_status
+ *		Added several new error messages and info messages
+ *		Added pnpbios_interface_attach_device
+ *		integrated core and proc init system
+ *		Introduced PNPMODE flags
+ *		Removed some useless includes
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/linkage.h>
+#include <linux/kernel.h>
+#include <linux/pnpbios.h>
+#include <linux/device.h>
+#include <linux/pnp.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/slab.h>
+#include <linux/kobject_uevent.h>
+#include <linux/completion.h>
+#include <linux/spinlock.h>
+#include <linux/dmi.h>
+#include <linux/delay.h>
+#include <linux/acpi.h>
+
+#include <asm/page.h>
+#include <asm/desc.h>
+#include <asm/system.h>
+#include <asm/byteorder.h>
+
+#include "pnpbios.h"
+
+
+/*
+ *
+ * PnP BIOS INTERFACE
+ *
+ */
+
+static union pnp_bios_install_struct * pnp_bios_install = NULL;
+
+int pnp_bios_present(void)
+{
+	return (pnp_bios_install != NULL);
+}
+
+struct pnp_dev_node_info node_info;
+
+void *pnpbios_kmalloc(size_t size, int f)
+{
+	void *p = kmalloc( size, f );
+	if ( p == NULL )
+		printk(KERN_ERR "PnPBIOS: kmalloc() failed\n");
+	else
+		memset(p, 0, size);
+	return p;
+}
+
+/*
+ *
+ * DOCKING FUNCTIONS
+ *
+ */
+
+#ifdef CONFIG_HOTPLUG
+
+static int unloading = 0;
+static struct completion unload_sem;
+
+/*
+ * (Much of this belongs in a shared routine somewhere)
+ */
+ 
+static int pnp_dock_event(int dock, struct pnp_docking_station_info *info)
+{
+	char *argv [3], **envp, *buf, *scratch;
+	int i = 0, value;
+
+	if (!hotplug_path [0])
+		return -ENOENT;
+	if (!current->fs->root) {
+		return -EAGAIN;
+	}
+	if (!(envp = (char **) pnpbios_kmalloc (20 * sizeof (char *), GFP_KERNEL))) {
+		return -ENOMEM;
+	}
+	if (!(buf = pnpbios_kmalloc (256, GFP_KERNEL))) {
+		kfree (envp);
+		return -ENOMEM;
+	}
+
+	/* only one standardized param to hotplug command: type */
+	argv [0] = hotplug_path;
+	argv [1] = "dock";
+	argv [2] = NULL;
+
+	/* minimal command environment */
+	envp [i++] = "HOME=/";
+	envp [i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin";
+
+#ifdef	DEBUG
+	/* hint that policy agent should enter no-stdout debug mode */
+	envp [i++] = "DEBUG=kernel";
+#endif
+	/* extensible set of named bus-specific parameters,
+	 * supporting multiple driver selection algorithms.
+	 */
+	scratch = buf;
+
+	/* action:  add, remove */
+	envp [i++] = scratch;
+	scratch += sprintf (scratch, "ACTION=%s", dock?"add":"remove") + 1;
+
+	/* Report the ident for the dock */
+	envp [i++] = scratch;
+	scratch += sprintf (scratch, "DOCK=%x/%x/%x",
+		info->location_id, info->serial, info->capabilities);
+	envp[i] = NULL;
+	
+	value = call_usermodehelper (argv [0], argv, envp, 0);
+	kfree (buf);
+	kfree (envp);
+	return 0;
+}
+
+/*
+ * Poll the PnP docking at regular intervals
+ */
+static int pnp_dock_thread(void * unused)
+{
+	static struct pnp_docking_station_info now;
+	int docked = -1, d = 0;
+	daemonize("kpnpbiosd");
+	allow_signal(SIGKILL);
+	while(!unloading && !signal_pending(current))
+	{
+		int status;
+		
+		/*
+		 * Poll every 2 seconds
+		 */
+		msleep_interruptible(2000);
+
+		if(signal_pending(current)) {
+			if (try_to_freeze(PF_FREEZE))
+				continue;
+			break;
+		}
+
+		status = pnp_bios_dock_station_info(&now);
+
+		switch(status)
+		{
+			/*
+			 * No dock to manage
+			 */
+			case PNP_FUNCTION_NOT_SUPPORTED:
+				complete_and_exit(&unload_sem, 0);
+			case PNP_SYSTEM_NOT_DOCKED:
+				d = 0;
+				break;
+			case PNP_SUCCESS:
+				d = 1;
+				break;
+			default:
+				pnpbios_print_status( "pnp_dock_thread", status );
+				continue;
+		}
+		if(d != docked)
+		{
+			if(pnp_dock_event(d, &now)==0)
+			{
+				docked = d;
+#if 0
+				printk(KERN_INFO "PnPBIOS: Docking station %stached\n", docked?"at":"de");
+#endif
+			}
+		}
+	}
+	complete_and_exit(&unload_sem, 0);
+}
+
+#endif   /* CONFIG_HOTPLUG */
+
+static int pnpbios_get_resources(struct pnp_dev * dev, struct pnp_resource_table * res)
+{
+	u8 nodenum = dev->number;
+	struct pnp_bios_node * node;
+
+	/* just in case */
+	if(!pnpbios_is_dynamic(dev))
+		return -EPERM;
+
+	node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+	if (!node)
+		return -1;
+	if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_DYNAMIC, node)) {
+		kfree(node);
+		return -ENODEV;
+	}
+	pnpbios_read_resources_from_node(res, node);
+	dev->active = pnp_is_active(dev);
+	kfree(node);
+	return 0;
+}
+
+static int pnpbios_set_resources(struct pnp_dev * dev, struct pnp_resource_table * res)
+{
+	u8 nodenum = dev->number;
+	struct pnp_bios_node * node;
+	int ret;
+
+	/* just in case */
+	if (!pnpbios_is_dynamic(dev))
+		return -EPERM;
+
+	node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+	if (!node)
+		return -1;
+	if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_DYNAMIC, node)) {
+		kfree(node);
+		return -ENODEV;
+	}
+	if(pnpbios_write_resources_to_node(res, node)<0) {
+		kfree(node);
+		return -1;
+	}
+	ret = pnp_bios_set_dev_node(node->handle, (char)PNPMODE_DYNAMIC, node);
+	kfree(node);
+	if (ret > 0)
+		ret = -1;
+	return ret;
+}
+
+static void pnpbios_zero_data_stream(struct pnp_bios_node * node)
+{
+	unsigned char * p = (char *)node->data;
+	unsigned char * end = (char *)(node->data + node->size);
+	unsigned int len;
+	int i;
+	while ((char *)p < (char *)end) {
+		if(p[0] & 0x80) { /* large tag */
+			len = (p[2] << 8) | p[1];
+			p += 3;
+		} else {
+			if (((p[0]>>3) & 0x0f) == 0x0f)
+				return;
+			len = p[0] & 0x07;
+			p += 1;
+		}
+		for (i = 0; i < len; i++)
+			p[i] = 0;
+		p += len;
+	}
+	printk(KERN_ERR "PnPBIOS: Resource structure did not contain an end tag.\n");
+}
+
+static int pnpbios_disable_resources(struct pnp_dev *dev)
+{
+	struct pnp_bios_node * node;
+	u8 nodenum = dev->number;
+	int ret;
+
+	/* just in case */
+	if(dev->flags & PNPBIOS_NO_DISABLE || !pnpbios_is_dynamic(dev))
+		return -EPERM;
+
+	node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+	if (!node)
+		return -ENOMEM;
+
+	if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_DYNAMIC, node)) {
+		kfree(node);
+		return -ENODEV;
+	}
+	pnpbios_zero_data_stream(node);
+
+	ret = pnp_bios_set_dev_node(dev->number, (char)PNPMODE_DYNAMIC, node);
+	kfree(node);
+	if (ret > 0)
+		ret = -1;
+	return ret;
+}
+
+/* PnP Layer support */
+
+struct pnp_protocol pnpbios_protocol = {
+	.name	= "Plug and Play BIOS",
+	.get	= pnpbios_get_resources,
+	.set	= pnpbios_set_resources,
+	.disable = pnpbios_disable_resources,
+};
+
+static int insert_device(struct pnp_dev *dev, struct pnp_bios_node * node)
+{
+	struct list_head * pos;
+	struct pnp_dev * pnp_dev;
+	struct pnp_id *dev_id;
+	char id[8];
+
+	/* check if the device is already added */
+	dev->number = node->handle;
+	list_for_each (pos, &pnpbios_protocol.devices){
+		pnp_dev = list_entry(pos, struct pnp_dev, protocol_list);
+		if (dev->number == pnp_dev->number)
+			return -1;
+	}
+
+	/* set the initial values for the PnP device */
+	dev_id = pnpbios_kmalloc(sizeof(struct pnp_id), GFP_KERNEL);
+	if (!dev_id)
+		return -1;
+	pnpid32_to_pnpid(node->eisa_id,id);
+	memcpy(dev_id->id,id,7);
+	pnp_add_id(dev_id, dev);
+	pnpbios_parse_data_stream(dev, node);
+	dev->active = pnp_is_active(dev);
+	dev->flags = node->flags;
+	if (!(dev->flags & PNPBIOS_NO_CONFIG))
+		dev->capabilities |= PNP_CONFIGURABLE;
+	if (!(dev->flags & PNPBIOS_NO_DISABLE))
+		dev->capabilities |= PNP_DISABLE;
+	dev->capabilities |= PNP_READ;
+	if (pnpbios_is_dynamic(dev))
+		dev->capabilities |= PNP_WRITE;
+	if (dev->flags & PNPBIOS_REMOVABLE)
+		dev->capabilities |= PNP_REMOVABLE;
+	dev->protocol = &pnpbios_protocol;
+
+	/* clear out the damaged flags */
+	if (!dev->active)
+		pnp_init_resource_table(&dev->res);
+
+	pnp_add_device(dev);
+	pnpbios_interface_attach_device(node);
+
+	return 0;
+}
+
+static void __init build_devlist(void)
+{
+	u8 nodenum;
+	unsigned int nodes_got = 0;
+	unsigned int devs = 0;
+	struct pnp_bios_node *node;
+	struct pnp_dev *dev;
+
+	node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+	if (!node)
+		return;
+
+	for(nodenum=0; nodenum<0xff; ) {
+		u8 thisnodenum = nodenum;
+		/* eventually we will want to use PNPMODE_STATIC here but for now
+		 * dynamic will help us catch buggy bioses to add to the blacklist.
+		 */
+		if (!pnpbios_dont_use_current_config) {
+			if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_DYNAMIC, node))
+				break;
+		} else {
+			if (pnp_bios_get_dev_node(&nodenum, (char )PNPMODE_STATIC, node))
+				break;
+		}
+		nodes_got++;
+		dev =  pnpbios_kmalloc(sizeof (struct pnp_dev), GFP_KERNEL);
+		if (!dev)
+			break;
+		if(insert_device(dev,node)<0)
+			kfree(dev);
+		else
+			devs++;
+		if (nodenum <= thisnodenum) {
+			printk(KERN_ERR "PnPBIOS: build_devlist: Node number 0x%x is out of sequence following node 0x%x. Aborting.\n", (unsigned int)nodenum, (unsigned int)thisnodenum);
+			break;
+		}
+	}
+	kfree(node);
+
+	printk(KERN_INFO "PnPBIOS: %i node%s reported by PnP BIOS; %i recorded by driver\n",
+		nodes_got, nodes_got != 1 ? "s" : "", devs);
+}
+
+/*
+ *
+ * INIT AND EXIT
+ *
+ */
+
+static int pnpbios_disabled; /* = 0 */
+int pnpbios_dont_use_current_config; /* = 0 */
+
+#ifndef MODULE
+static int __init pnpbios_setup(char *str)
+{
+	int invert;
+
+	while ((str != NULL) && (*str != '\0')) {
+		if (strncmp(str, "off", 3) == 0)
+			pnpbios_disabled=1;
+		if (strncmp(str, "on", 2) == 0)
+			pnpbios_disabled=0;
+		invert = (strncmp(str, "no-", 3) == 0);
+		if (invert)
+			str += 3;
+		if (strncmp(str, "curr", 4) == 0)
+			pnpbios_dont_use_current_config = invert;
+		str = strchr(str, ',');
+		if (str != NULL)
+			str += strspn(str, ", \t");
+	}
+
+	return 1;
+}
+
+__setup("pnpbios=", pnpbios_setup);
+#endif
+
+/* PnP BIOS signature: "$PnP" */
+#define PNP_SIGNATURE   (('$' << 0) + ('P' << 8) + ('n' << 16) + ('P' << 24))
+
+static int __init pnpbios_probe_system(void)
+{
+	union pnp_bios_install_struct *check;
+	u8 sum;
+	int length, i;
+
+	printk(KERN_INFO "PnPBIOS: Scanning system for PnP BIOS support...\n");
+
+	/*
+ 	 * Search the defined area (0xf0000-0xffff0) for a valid PnP BIOS
+	 * structure and, if one is found, sets up the selectors and
+	 * entry points
+	 */
+	for (check = (union pnp_bios_install_struct *) __va(0xf0000);
+	     check < (union pnp_bios_install_struct *) __va(0xffff0);
+	     check = (void *)check + 16) {
+		if (check->fields.signature != PNP_SIGNATURE)
+			continue;
+		printk(KERN_INFO "PnPBIOS: Found PnP BIOS installation structure at 0x%p\n", check);
+		length = check->fields.length;
+		if (!length) {
+			printk(KERN_ERR "PnPBIOS: installation structure is invalid, skipping\n");
+			continue;
+		}
+		for (sum = 0, i = 0; i < length; i++)
+			sum += check->chars[i];
+		if (sum) {
+			printk(KERN_ERR "PnPBIOS: installation structure is corrupted, skipping\n");
+			continue;
+		}
+		if (check->fields.version < 0x10) {
+			printk(KERN_WARNING "PnPBIOS: PnP BIOS version %d.%d is not supported\n",
+			       check->fields.version >> 4,
+			       check->fields.version & 15);
+			continue;
+		}
+		printk(KERN_INFO "PnPBIOS: PnP BIOS version %d.%d, entry 0x%x:0x%x, dseg 0x%x\n",
+                       check->fields.version >> 4, check->fields.version & 15,
+		       check->fields.pm16cseg, check->fields.pm16offset,
+		       check->fields.pm16dseg);
+		pnp_bios_install = check;
+		return 1;
+	}
+
+	printk(KERN_INFO "PnPBIOS: PnP BIOS support was not detected.\n");
+	return 0;
+}
+
+static int __init exploding_pnp_bios(struct dmi_system_id *d)
+{
+	printk(KERN_WARNING "%s detected. Disabling PnPBIOS\n", d->ident);
+	return 0;
+}
+
+static struct dmi_system_id pnpbios_dmi_table[] = {
+	{	/* PnPBIOS GPF on boot */
+		.callback = exploding_pnp_bios,
+		.ident = "Higraded P14H",
+		.matches = {
+			DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."),
+			DMI_MATCH(DMI_BIOS_VERSION, "07.00T"),
+			DMI_MATCH(DMI_SYS_VENDOR, "Higraded"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "P14H"),
+		},
+	},
+	{	/* PnPBIOS GPF on boot */
+		.callback = exploding_pnp_bios,
+		.ident = "ASUS P4P800",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer Inc."),
+			DMI_MATCH(DMI_BOARD_NAME, "P4P800"),
+		},
+	},
+	{ }
+};
+
+static int __init pnpbios_init(void)
+{
+	int ret;
+
+	if (pnpbios_disabled || dmi_check_system(pnpbios_dmi_table)) {
+		printk(KERN_INFO "PnPBIOS: Disabled\n");
+		return -ENODEV;
+	}
+
+#ifdef CONFIG_PNPACPI
+	if (!acpi_disabled && !pnpacpi_disabled) {
+		pnpbios_disabled = 1;
+		printk(KERN_INFO "PnPBIOS: Disabled by ACPI PNP\n");
+		return -ENODEV;
+	}
+#endif /* CONFIG_ACPI */
+
+	/* scan the system for pnpbios support */
+	if (!pnpbios_probe_system())
+		return -ENODEV;
+
+	/* make preparations for bios calls */
+	pnpbios_calls_init(pnp_bios_install);
+
+	/* read the node info */
+	ret = pnp_bios_dev_node_info(&node_info);
+	if (ret) {
+		printk(KERN_ERR "PnPBIOS: Unable to get node info.  Aborting.\n");
+		return ret;
+	}
+
+	/* register with the pnp layer */
+	ret = pnp_register_protocol(&pnpbios_protocol);
+	if (ret) {
+		printk(KERN_ERR "PnPBIOS: Unable to register driver.  Aborting.\n");
+		return ret;
+	}
+
+	/* start the proc interface */
+	ret = pnpbios_proc_init();
+	if (ret)
+		printk(KERN_ERR "PnPBIOS: Failed to create proc interface.\n");
+
+	/* scan for pnpbios devices */
+	build_devlist();
+
+	return 0;
+}
+
+subsys_initcall(pnpbios_init);
+
+static int __init pnpbios_thread_init(void)
+{
+	if (pnpbios_disabled)
+		return 0;
+#ifdef CONFIG_HOTPLUG
+	init_completion(&unload_sem);
+	if (kernel_thread(pnp_dock_thread, NULL, CLONE_KERNEL) > 0)
+		unloading = 0;
+#endif
+	return 0;
+}
+
+#ifndef MODULE
+
+/* init/main.c calls pnpbios_init early */
+
+/* Start the kernel thread later: */
+module_init(pnpbios_thread_init);
+
+#else
+
+/*
+ * N.B.: Building pnpbios as a module hasn't been fully implemented
+ */
+
+MODULE_LICENSE("GPL");
+
+static int __init pnpbios_init_all(void)
+{
+	int r;
+
+	r = pnpbios_init();
+	if (r)
+		return r;
+	r = pnpbios_thread_init();
+	if (r)
+		return r;
+	return 0;
+}
+
+static void __exit pnpbios_exit(void)
+{
+#ifdef CONFIG_HOTPLUG
+	unloading = 1;
+	wait_for_completion(&unload_sem);
+#endif
+	pnpbios_proc_exit();
+	/* We ought to free resources here */
+	return;
+}
+
+module_init(pnpbios_init_all);
+module_exit(pnpbios_exit);
+
+#endif
+
+EXPORT_SYMBOL(pnpbios_protocol);

drivers/pnp/pnpbios/pnpbios.h

@@ -0,0 +1,47 @@
+/*
+ * pnpbios.h - contains local definitions
+ */
+
+#pragma pack(1)
+union pnp_bios_install_struct {
+	struct {
+		u32 signature;    /* "$PnP" */
+		u8 version;	  /* in BCD */
+		u8 length;	  /* length in bytes, currently 21h */
+		u16 control;	  /* system capabilities */
+		u8 checksum;	  /* all bytes must add up to 0 */
+
+		u32 eventflag;    /* phys. address of the event flag */
+		u16 rmoffset;     /* real mode entry point */
+		u16 rmcseg;
+		u16 pm16offset;   /* 16 bit protected mode entry */
+		u32 pm16cseg;
+		u32 deviceID;	  /* EISA encoded system ID or 0 */
+		u16 rmdseg;	  /* real mode data segment */
+		u32 pm16dseg;	  /* 16 bit pm data segment base */
+	} fields;
+	char chars[0x21];	  /* To calculate the checksum */
+};
+#pragma pack()
+
+extern int pnp_bios_present(void);
+extern int  pnpbios_dont_use_current_config;
+extern void *pnpbios_kmalloc(size_t size, int f);
+
+extern int pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node);
+extern int pnpbios_read_resources_from_node(struct pnp_resource_table *res, struct pnp_bios_node * node);
+extern int pnpbios_write_resources_to_node(struct pnp_resource_table *res, struct pnp_bios_node * node);
+extern void pnpid32_to_pnpid(u32 id, char *str);
+
+extern void pnpbios_print_status(const char * module, u16 status);
+extern void pnpbios_calls_init(union pnp_bios_install_struct * header);
+
+#ifdef CONFIG_PNPBIOS_PROC_FS
+extern int pnpbios_interface_attach_device(struct pnp_bios_node * node);
+extern int pnpbios_proc_init (void);
+extern void pnpbios_proc_exit (void);
+#else
+static inline int pnpbios_interface_attach_device(struct pnp_bios_node * node) { return 0; }
+static inline int pnpbios_proc_init (void) { return 0; }
+static inline void pnpbios_proc_exit (void) { ; }
+#endif /* CONFIG_PNPBIOS_PROC_FS */

drivers/pnp/pnpbios/proc.c

@@ -0,0 +1,292 @@
+/*
+ * /proc/bus/pnp interface for Plug and Play devices
+ *
+ * Written by David Hinds, dahinds@users.sourceforge.net
+ * Modified by Thomas Hood
+ *
+ * The .../devices and .../<node> and .../boot/<node> files are
+ * utilized by the lspnp and setpnp utilities, supplied with the
+ * pcmcia-cs package.
+ *     http://pcmcia-cs.sourceforge.net
+ *
+ * The .../escd file is utilized by the lsescd utility written by
+ * Gunther Mayer.
+ *     http://home.t-online.de/home/gunther.mayer/lsescd
+ *
+ * The .../legacy_device_resources file is not used yet.
+ *
+ * The other files are human-readable.
+ */
+
+//#include <pcmcia/config.h>
+//#include <pcmcia/k_compat.h>
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/pnpbios.h>
+#include <linux/init.h>
+
+#include <asm/uaccess.h>
+
+#include "pnpbios.h"
+
+static struct proc_dir_entry *proc_pnp = NULL;
+static struct proc_dir_entry *proc_pnp_boot = NULL;
+
+static int proc_read_pnpconfig(char *buf, char **start, off_t pos,
+                               int count, int *eof, void *data)
+{
+	struct pnp_isa_config_struc pnps;
+
+	if (pnp_bios_isapnp_config(&pnps))
+		return -EIO;
+	return snprintf(buf, count,
+		"structure_revision %d\n"
+		"number_of_CSNs %d\n"
+		"ISA_read_data_port 0x%x\n",
+		pnps.revision,
+		pnps.no_csns,
+		pnps.isa_rd_data_port
+	);
+}
+
+static int proc_read_escdinfo(char *buf, char **start, off_t pos,
+                              int count, int *eof, void *data)
+{
+	struct escd_info_struc escd;
+
+	if (pnp_bios_escd_info(&escd))
+		return -EIO;
+	return snprintf(buf, count,
+		"min_ESCD_write_size %d\n"
+		"ESCD_size %d\n"
+		"NVRAM_base 0x%x\n",
+		escd.min_escd_write_size,
+		escd.escd_size,
+		escd.nv_storage_base
+	);
+}
+
+#define MAX_SANE_ESCD_SIZE (32*1024)
+static int proc_read_escd(char *buf, char **start, off_t pos,
+                          int count, int *eof, void *data)
+{
+	struct escd_info_struc escd;
+	char *tmpbuf;
+	int escd_size, escd_left_to_read, n;
+
+	if (pnp_bios_escd_info(&escd))
+		return -EIO;
+
+	/* sanity check */
+	if (escd.escd_size > MAX_SANE_ESCD_SIZE) {
+		printk(KERN_ERR "PnPBIOS: proc_read_escd: ESCD size reported by BIOS escd_info call is too great\n");
+		return -EFBIG;
+	}
+
+	tmpbuf = pnpbios_kmalloc(escd.escd_size, GFP_KERNEL);
+	if (!tmpbuf) return -ENOMEM;
+
+	if (pnp_bios_read_escd(tmpbuf, escd.nv_storage_base)) {
+		kfree(tmpbuf);
+		return -EIO;
+	}
+
+	escd_size = (unsigned char)(tmpbuf[0]) + (unsigned char)(tmpbuf[1])*256;
+
+	/* sanity check */
+	if (escd_size > MAX_SANE_ESCD_SIZE) {
+		printk(KERN_ERR "PnPBIOS: proc_read_escd: ESCD size reported by BIOS read_escd call is too great\n");
+		return -EFBIG;
+	}
+
+	escd_left_to_read = escd_size - pos;
+	if (escd_left_to_read < 0) escd_left_to_read = 0;
+	if (escd_left_to_read == 0) *eof = 1;
+	n = min(count,escd_left_to_read);
+	memcpy(buf, tmpbuf + pos, n);
+	kfree(tmpbuf);
+	*start = buf;
+	return n;
+}
+
+static int proc_read_legacyres(char *buf, char **start, off_t pos,
+                               int count, int *eof, void *data)
+{
+	/* Assume that the following won't overflow the buffer */
+	if (pnp_bios_get_stat_res(buf)) 
+		return -EIO;
+
+	return count;  // FIXME: Return actual length
+}
+
+static int proc_read_devices(char *buf, char **start, off_t pos,
+                             int count, int *eof, void *data)
+{
+	struct pnp_bios_node *node;
+	u8 nodenum;
+	char *p = buf;
+
+	if (pos >= 0xff)
+		return 0;
+
+	node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+	if (!node) return -ENOMEM;
+
+	for (nodenum=pos; nodenum<0xff; ) {
+		u8 thisnodenum = nodenum;
+		/* 26 = the number of characters per line sprintf'ed */
+		if ((p - buf + 26) > count)
+			break;
+		if (pnp_bios_get_dev_node(&nodenum, PNPMODE_DYNAMIC, node))
+			break;
+		p += sprintf(p, "%02x\t%08x\t%02x:%02x:%02x\t%04x\n",
+			     node->handle, node->eisa_id,
+			     node->type_code[0], node->type_code[1],
+			     node->type_code[2], node->flags);
+		if (nodenum <= thisnodenum) {
+			printk(KERN_ERR "%s Node number 0x%x is out of sequence following node 0x%x. Aborting.\n", "PnPBIOS: proc_read_devices:", (unsigned int)nodenum, (unsigned int)thisnodenum);
+			*eof = 1;
+			break;
+		}
+	}
+	kfree(node);
+	if (nodenum == 0xff)
+		*eof = 1;
+	*start = (char *)((off_t)nodenum - pos);
+	return p - buf;
+}
+
+static int proc_read_node(char *buf, char **start, off_t pos,
+                          int count, int *eof, void *data)
+{
+	struct pnp_bios_node *node;
+	int boot = (long)data >> 8;
+	u8 nodenum = (long)data;
+	int len;
+
+	node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+	if (!node) return -ENOMEM;
+	if (pnp_bios_get_dev_node(&nodenum, boot, node)) {
+		kfree(node);
+		return -EIO;
+	}
+	len = node->size - sizeof(struct pnp_bios_node);
+	memcpy(buf, node->data, len);
+	kfree(node);
+	return len;
+}
+
+static int proc_write_node(struct file *file, const char __user *buf,
+                           unsigned long count, void *data)
+{
+	struct pnp_bios_node *node;
+	int boot = (long)data >> 8;
+	u8 nodenum = (long)data;
+	int ret = count;
+
+	node = pnpbios_kmalloc(node_info.max_node_size, GFP_KERNEL);
+	if (!node)
+		return -ENOMEM;
+	if (pnp_bios_get_dev_node(&nodenum, boot, node)) {
+		ret = -EIO;
+		goto out;
+	}
+	if (count != node->size - sizeof(struct pnp_bios_node)) {
+		ret = -EINVAL;
+		goto out;
+	}
+	if (copy_from_user(node->data, buf, count)) {
+		ret = -EFAULT;
+		goto out;
+	}
+	if (pnp_bios_set_dev_node(node->handle, boot, node) != 0) {
+		ret = -EINVAL;
+		goto out;
+	}
+	ret = count;
+out:
+	kfree(node);
+	return ret;
+}
+
+int pnpbios_interface_attach_device(struct pnp_bios_node * node)
+{
+	char name[3];
+	struct proc_dir_entry *ent;
+
+	sprintf(name, "%02x", node->handle);
+
+	if (!proc_pnp)
+		return -EIO;
+	if ( !pnpbios_dont_use_current_config ) {
+		ent = create_proc_entry(name, 0, proc_pnp);
+		if (ent) {
+			ent->read_proc = proc_read_node;
+			ent->write_proc = proc_write_node;
+			ent->data = (void *)(long)(node->handle);
+		}
+	}
+
+	if (!proc_pnp_boot)
+		return -EIO;
+	ent = create_proc_entry(name, 0, proc_pnp_boot);
+	if (ent) {
+		ent->read_proc = proc_read_node;
+		ent->write_proc = proc_write_node;
+		ent->data = (void *)(long)(node->handle+0x100);
+		return 0;
+	}
+
+	return -EIO;
+}
+
+/*
+ * When this is called, pnpbios functions are assumed to
+ * work and the pnpbios_dont_use_current_config flag
+ * should already have been set to the appropriate value
+ */
+int __init pnpbios_proc_init( void )
+{
+	proc_pnp = proc_mkdir("pnp", proc_bus);
+	if (!proc_pnp)
+		return -EIO;
+	proc_pnp_boot = proc_mkdir("boot", proc_pnp);
+	if (!proc_pnp_boot)
+		return -EIO;
+	create_proc_read_entry("devices", 0, proc_pnp, proc_read_devices, NULL);
+	create_proc_read_entry("configuration_info", 0, proc_pnp, proc_read_pnpconfig, NULL);
+	create_proc_read_entry("escd_info", 0, proc_pnp, proc_read_escdinfo, NULL);
+	create_proc_read_entry("escd", S_IRUSR, proc_pnp, proc_read_escd, NULL);
+	create_proc_read_entry("legacy_device_resources", 0, proc_pnp, proc_read_legacyres, NULL);
+
+	return 0;
+}
+
+void __exit pnpbios_proc_exit(void)
+{
+	int i;
+	char name[3];
+
+	if (!proc_pnp)
+		return;
+
+	for (i=0; i<0xff; i++) {
+		sprintf(name, "%02x", i);
+		if ( !pnpbios_dont_use_current_config )
+			remove_proc_entry(name, proc_pnp);
+		remove_proc_entry(name, proc_pnp_boot);
+	}
+	remove_proc_entry("legacy_device_resources", proc_pnp);
+	remove_proc_entry("escd", proc_pnp);
+	remove_proc_entry("escd_info", proc_pnp);
+	remove_proc_entry("configuration_info", proc_pnp);
+	remove_proc_entry("devices", proc_pnp);
+	remove_proc_entry("boot", proc_pnp);
+	remove_proc_entry("pnp", proc_bus);
+
+	return;
+}

drivers/pnp/pnpbios/rsparser.c

@@ -0,0 +1,795 @@
+/*
+ * rsparser.c - parses and encodes pnpbios resource data streams
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/ctype.h>
+#include <linux/pnp.h>
+#include <linux/pnpbios.h>
+
+#ifdef CONFIG_PCI
+#include <linux/pci.h>
+#else
+inline void pcibios_penalize_isa_irq(int irq) {}
+#endif /* CONFIG_PCI */
+
+#include "pnpbios.h"
+
+/* standard resource tags */
+#define SMALL_TAG_PNPVERNO		0x01
+#define SMALL_TAG_LOGDEVID		0x02
+#define SMALL_TAG_COMPATDEVID		0x03
+#define SMALL_TAG_IRQ			0x04
+#define SMALL_TAG_DMA			0x05
+#define SMALL_TAG_STARTDEP		0x06
+#define SMALL_TAG_ENDDEP		0x07
+#define SMALL_TAG_PORT			0x08
+#define SMALL_TAG_FIXEDPORT		0x09
+#define SMALL_TAG_VENDOR		0x0e
+#define SMALL_TAG_END			0x0f
+#define LARGE_TAG			0x80
+#define LARGE_TAG_MEM			0x81
+#define LARGE_TAG_ANSISTR		0x82
+#define LARGE_TAG_UNICODESTR		0x83
+#define LARGE_TAG_VENDOR		0x84
+#define LARGE_TAG_MEM32			0x85
+#define LARGE_TAG_FIXEDMEM32		0x86
+
+/*
+ * Resource Data Stream Format:
+ *
+ * Allocated Resources (required)
+ * end tag ->
+ * Resource Configuration Options (optional)
+ * end tag ->
+ * Compitable Device IDs (optional)
+ * final end tag ->
+ */
+
+/*
+ * Allocated Resources
+ */
+
+static void
+pnpbios_parse_allocated_irqresource(struct pnp_resource_table * res, int irq)
+{
+	int i = 0;
+	while (!(res->irq_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_IRQ) i++;
+	if (i < PNP_MAX_IRQ) {
+		res->irq_resource[i].flags = IORESOURCE_IRQ;  // Also clears _UNSET flag
+		if (irq == -1) {
+			res->irq_resource[i].flags |= IORESOURCE_DISABLED;
+			return;
+		}
+		res->irq_resource[i].start =
+		res->irq_resource[i].end = (unsigned long) irq;
+		pcibios_penalize_isa_irq(irq);
+	}
+}
+
+static void
+pnpbios_parse_allocated_dmaresource(struct pnp_resource_table * res, int dma)
+{
+	int i = 0;
+	while (!(res->dma_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_DMA) i++;
+	if (i < PNP_MAX_DMA) {
+		res->dma_resource[i].flags = IORESOURCE_DMA;  // Also clears _UNSET flag
+		if (dma == -1) {
+			res->dma_resource[i].flags |= IORESOURCE_DISABLED;
+			return;
+		}
+		res->dma_resource[i].start =
+		res->dma_resource[i].end = (unsigned long) dma;
+	}
+}
+
+static void
+pnpbios_parse_allocated_ioresource(struct pnp_resource_table * res, int io, int len)
+{
+	int i = 0;
+	while (!(res->port_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_PORT) i++;
+	if (i < PNP_MAX_PORT) {
+		res->port_resource[i].flags = IORESOURCE_IO;  // Also clears _UNSET flag
+		if (len <= 0 || (io + len -1) >= 0x10003) {
+			res->port_resource[i].flags |= IORESOURCE_DISABLED;
+			return;
+		}
+		res->port_resource[i].start = (unsigned long) io;
+		res->port_resource[i].end = (unsigned long)(io + len - 1);
+	}
+}
+
+static void
+pnpbios_parse_allocated_memresource(struct pnp_resource_table * res, int mem, int len)
+{
+	int i = 0;
+	while (!(res->mem_resource[i].flags & IORESOURCE_UNSET) && i < PNP_MAX_MEM) i++;
+	if (i < PNP_MAX_MEM) {
+		res->mem_resource[i].flags = IORESOURCE_MEM;  // Also clears _UNSET flag
+		if (len <= 0) {
+			res->mem_resource[i].flags |= IORESOURCE_DISABLED;
+			return;
+		}
+		res->mem_resource[i].start = (unsigned long) mem;
+		res->mem_resource[i].end = (unsigned long)(mem + len - 1);
+	}
+}
+
+static unsigned char *
+pnpbios_parse_allocated_resource_data(unsigned char * p, unsigned char * end, struct pnp_resource_table * res)
+{
+	unsigned int len, tag;
+	int io, size, mask, i;
+
+	if (!p)
+		return NULL;
+
+	/* Blank the resource table values */
+	pnp_init_resource_table(res);
+
+	while ((char *)p < (char *)end) {
+
+		/* determine the type of tag */
+		if (p[0] & LARGE_TAG) { /* large tag */
+			len = (p[2] << 8) | p[1];
+			tag = p[0];
+		} else { /* small tag */
+			len = p[0] & 0x07;
+			tag = ((p[0]>>3) & 0x0f);
+		}
+
+		switch (tag) {
+
+		case LARGE_TAG_MEM:
+			if (len != 9)
+				goto len_err;
+			io = *(short *) &p[4];
+			size = *(short *) &p[10];
+			pnpbios_parse_allocated_memresource(res, io, size);
+			break;
+
+		case LARGE_TAG_ANSISTR:
+			/* ignore this for now */
+			break;
+
+		case LARGE_TAG_VENDOR:
+			/* do nothing */
+			break;
+
+		case LARGE_TAG_MEM32:
+			if (len != 17)
+				goto len_err;
+			io = *(int *) &p[4];
+			size = *(int *) &p[16];
+			pnpbios_parse_allocated_memresource(res, io, size);
+			break;
+
+		case LARGE_TAG_FIXEDMEM32:
+			if (len != 9)
+				goto len_err;
+			io = *(int *) &p[4];
+			size = *(int *) &p[8];
+			pnpbios_parse_allocated_memresource(res, io, size);
+			break;
+
+		case SMALL_TAG_IRQ:
+			if (len < 2 || len > 3)
+				goto len_err;
+			io = -1;
+			mask= p[1] + p[2]*256;
+			for (i=0;i<16;i++, mask=mask>>1)
+				if(mask & 0x01) io=i;
+			pnpbios_parse_allocated_irqresource(res, io);
+			break;
+
+		case SMALL_TAG_DMA:
+			if (len != 2)
+				goto len_err;
+			io = -1;
+			mask = p[1];
+			for (i=0;i<8;i++, mask = mask>>1)
+				if(mask & 0x01) io=i;
+			pnpbios_parse_allocated_dmaresource(res, io);
+			break;
+
+		case SMALL_TAG_PORT:
+			if (len != 7)
+				goto len_err;
+			io = p[2] + p[3] *256;
+			size = p[7];
+			pnpbios_parse_allocated_ioresource(res, io, size);
+			break;
+
+		case SMALL_TAG_VENDOR:
+			/* do nothing */
+			break;
+
+		case SMALL_TAG_FIXEDPORT:
+			if (len != 3)
+				goto len_err;
+			io = p[1] + p[2] * 256;
+			size = p[3];
+			pnpbios_parse_allocated_ioresource(res, io, size);
+			break;
+
+		case SMALL_TAG_END:
+			p = p + 2;
+        		return (unsigned char *)p;
+			break;
+
+		default: /* an unkown tag */
+			len_err:
+			printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len);
+			break;
+		}
+
+		/* continue to the next tag */
+		if (p[0] & LARGE_TAG)
+			p += len + 3;
+		else
+			p += len + 1;
+	}
+
+	printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n");
+
+	return NULL;
+}
+
+
+/*
+ * Resource Configuration Options
+ */
+
+static void
+pnpbios_parse_mem_option(unsigned char *p, int size, struct pnp_option *option)
+{
+	struct pnp_mem * mem;
+	mem = pnpbios_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL);
+	if (!mem)
+		return;
+	mem->min = ((p[5] << 8) | p[4]) << 8;
+	mem->max = ((p[7] << 8) | p[6]) << 8;
+	mem->align = (p[9] << 8) | p[8];
+	mem->size = ((p[11] << 8) | p[10]) << 8;
+	mem->flags = p[3];
+	pnp_register_mem_resource(option,mem);
+	return;
+}
+
+static void
+pnpbios_parse_mem32_option(unsigned char *p, int size, struct pnp_option *option)
+{
+	struct pnp_mem * mem;
+	mem = pnpbios_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL);
+	if (!mem)
+		return;
+	mem->min = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4];
+	mem->max = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8];
+	mem->align = (p[15] << 24) | (p[14] << 16) | (p[13] << 8) | p[12];
+	mem->size = (p[19] << 24) | (p[18] << 16) | (p[17] << 8) | p[16];
+	mem->flags = p[3];
+	pnp_register_mem_resource(option,mem);
+	return;
+}
+
+static void
+pnpbios_parse_fixed_mem32_option(unsigned char *p, int size, struct pnp_option *option)
+{
+	struct pnp_mem * mem;
+	mem = pnpbios_kmalloc(sizeof(struct pnp_mem), GFP_KERNEL);
+	if (!mem)
+		return;
+	mem->min = mem->max = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4];
+	mem->size = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8];
+	mem->align = 0;
+	mem->flags = p[3];
+	pnp_register_mem_resource(option,mem);
+	return;
+}
+
+static void
+pnpbios_parse_irq_option(unsigned char *p, int size, struct pnp_option *option)
+{
+	struct pnp_irq * irq;
+	unsigned long bits;
+
+	irq = pnpbios_kmalloc(sizeof(struct pnp_irq), GFP_KERNEL);
+	if (!irq)
+		return;
+	bits = (p[2] << 8) | p[1];
+	bitmap_copy(irq->map, &bits, 16);
+	if (size > 2)
+		irq->flags = p[3];
+	else
+		irq->flags = IORESOURCE_IRQ_HIGHEDGE;
+	pnp_register_irq_resource(option,irq);
+	return;
+}
+
+static void
+pnpbios_parse_dma_option(unsigned char *p, int size, struct pnp_option *option)
+{
+	struct pnp_dma * dma;
+	dma = pnpbios_kmalloc(sizeof(struct pnp_dma), GFP_KERNEL);
+	if (!dma)
+		return;
+	dma->map = p[1];
+	dma->flags = p[2];
+	pnp_register_dma_resource(option,dma);
+	return;
+}
+
+static void
+pnpbios_parse_port_option(unsigned char *p, int size, struct pnp_option *option)
+{
+	struct pnp_port * port;
+	port = pnpbios_kmalloc(sizeof(struct pnp_port), GFP_KERNEL);
+	if (!port)
+		return;
+	port->min = (p[3] << 8) | p[2];
+	port->max = (p[5] << 8) | p[4];
+	port->align = p[6];
+	port->size = p[7];
+	port->flags = p[1] ? PNP_PORT_FLAG_16BITADDR : 0;
+	pnp_register_port_resource(option,port);
+	return;
+}
+
+static void
+pnpbios_parse_fixed_port_option(unsigned char *p, int size, struct pnp_option *option)
+{
+	struct pnp_port * port;
+	port = pnpbios_kmalloc(sizeof(struct pnp_port), GFP_KERNEL);
+	if (!port)
+		return;
+	port->min = port->max = (p[2] << 8) | p[1];
+	port->size = p[3];
+	port->align = 0;
+	port->flags = PNP_PORT_FLAG_FIXED;
+	pnp_register_port_resource(option,port);
+	return;
+}
+
+static unsigned char *
+pnpbios_parse_resource_option_data(unsigned char * p, unsigned char * end, struct pnp_dev *dev)
+{
+	unsigned int len, tag;
+	int priority = 0;
+	struct pnp_option *option, *option_independent;
+
+	if (!p)
+		return NULL;
+
+	option_independent = option = pnp_register_independent_option(dev);
+	if (!option)
+		return NULL;
+
+	while ((char *)p < (char *)end) {
+
+		/* determine the type of tag */
+		if (p[0] & LARGE_TAG) { /* large tag */
+			len = (p[2] << 8) | p[1];
+			tag = p[0];
+		} else { /* small tag */
+			len = p[0] & 0x07;
+			tag = ((p[0]>>3) & 0x0f);
+		}
+
+		switch (tag) {
+
+		case LARGE_TAG_MEM:
+			if (len != 9)
+				goto len_err;
+			pnpbios_parse_mem_option(p, len, option);
+			break;
+
+		case LARGE_TAG_MEM32:
+			if (len != 17)
+				goto len_err;
+			pnpbios_parse_mem32_option(p, len, option);
+			break;
+
+		case LARGE_TAG_FIXEDMEM32:
+			if (len != 9)
+				goto len_err;
+			pnpbios_parse_fixed_mem32_option(p, len, option);
+			break;
+
+		case SMALL_TAG_IRQ:
+			if (len < 2 || len > 3)
+				goto len_err;
+			pnpbios_parse_irq_option(p, len, option);
+			break;
+
+		case SMALL_TAG_DMA:
+			if (len != 2)
+				goto len_err;
+			pnpbios_parse_dma_option(p, len, option);
+			break;
+
+		case SMALL_TAG_PORT:
+			if (len != 7)
+				goto len_err;
+			pnpbios_parse_port_option(p, len, option);
+			break;
+
+		case SMALL_TAG_VENDOR:
+			/* do nothing */
+			break;
+
+		case SMALL_TAG_FIXEDPORT:
+			if (len != 3)
+				goto len_err;
+			pnpbios_parse_fixed_port_option(p, len, option);
+			break;
+
+		case SMALL_TAG_STARTDEP:
+			if (len > 1)
+				goto len_err;
+			priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE;
+			if (len > 0)
+				priority = 0x100 | p[1];
+			option = pnp_register_dependent_option(dev, priority);
+			if (!option)
+				return NULL;
+			break;
+
+		case SMALL_TAG_ENDDEP:
+			if (len != 0)
+				goto len_err;
+			if (option_independent == option)
+				printk(KERN_WARNING "PnPBIOS: Missing SMALL_TAG_STARTDEP tag\n");
+			option = option_independent;
+			break;
+
+		case SMALL_TAG_END:
+			if (option_independent != option)
+				printk(KERN_WARNING "PnPBIOS: Missing SMALL_TAG_ENDDEP tag\n");
+			p = p + 2;
+        		return (unsigned char *)p;
+			break;
+
+		default: /* an unkown tag */
+			len_err:
+			printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len);
+			break;
+		}
+
+		/* continue to the next tag */
+		if (p[0] & LARGE_TAG)
+			p += len + 3;
+		else
+			p += len + 1;
+	}
+
+	printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n");
+
+	return NULL;
+}
+
+
+/*
+ * Compatible Device IDs
+ */
+
+#define HEX(id,a) hex[((id)>>a) & 15]
+#define CHAR(id,a) (0x40 + (((id)>>a) & 31))
+//
+
+void pnpid32_to_pnpid(u32 id, char *str)
+{
+	const char *hex = "0123456789abcdef";
+
+	id = be32_to_cpu(id);
+	str[0] = CHAR(id, 26);
+	str[1] = CHAR(id, 21);
+	str[2] = CHAR(id,16);
+	str[3] = HEX(id, 12);
+	str[4] = HEX(id, 8);
+	str[5] = HEX(id, 4);
+	str[6] = HEX(id, 0);
+	str[7] = '\0';
+
+	return;
+}
+//
+#undef CHAR
+#undef HEX
+
+static unsigned char *
+pnpbios_parse_compatible_ids(unsigned char *p, unsigned char *end, struct pnp_dev *dev)
+{
+	int len, tag;
+	char id[8];
+	struct pnp_id *dev_id;
+
+	if (!p)
+		return NULL;
+
+	while ((char *)p < (char *)end) {
+
+		/* determine the type of tag */
+		if (p[0] & LARGE_TAG) { /* large tag */
+			len = (p[2] << 8) | p[1];
+			tag = p[0];
+		} else { /* small tag */
+			len = p[0] & 0x07;
+			tag = ((p[0]>>3) & 0x0f);
+		}
+
+		switch (tag) {
+
+		case LARGE_TAG_ANSISTR:
+			strncpy(dev->name, p + 3, len >= PNP_NAME_LEN ? PNP_NAME_LEN - 2 : len);
+			dev->name[len >= PNP_NAME_LEN ? PNP_NAME_LEN - 1 : len] = '\0';
+			break;
+
+		case SMALL_TAG_COMPATDEVID: /* compatible ID */
+			if (len != 4)
+				goto len_err;
+			dev_id =  pnpbios_kmalloc(sizeof (struct pnp_id), GFP_KERNEL);
+			if (!dev_id)
+				return NULL;
+			memset(dev_id, 0, sizeof(struct pnp_id));
+			pnpid32_to_pnpid(p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24,id);
+			memcpy(&dev_id->id, id, 7);
+			pnp_add_id(dev_id, dev);
+			break;
+
+		case SMALL_TAG_END:
+			p = p + 2;
+        		return (unsigned char *)p;
+			break;
+
+		default: /* an unkown tag */
+			len_err:
+			printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len);
+			break;
+		}
+
+		/* continue to the next tag */
+		if (p[0] & LARGE_TAG)
+			p += len + 3;
+		else
+			p += len + 1;
+	}
+
+	printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n");
+
+	return NULL;
+}
+
+
+/*
+ * Allocated Resource Encoding
+ */
+
+static void pnpbios_encode_mem(unsigned char *p, struct resource * res)
+{
+	unsigned long base = res->start;
+	unsigned long len = res->end - res->start + 1;
+	p[4] = (base >> 8) & 0xff;
+	p[5] = ((base >> 8) >> 8) & 0xff;
+	p[6] = (base >> 8) & 0xff;
+	p[7] = ((base >> 8) >> 8) & 0xff;
+	p[10] = (len >> 8) & 0xff;
+	p[11] = ((len >> 8) >> 8) & 0xff;
+	return;
+}
+
+static void pnpbios_encode_mem32(unsigned char *p, struct resource * res)
+{
+	unsigned long base = res->start;
+	unsigned long len = res->end - res->start + 1;
+	p[4] = base & 0xff;
+	p[5] = (base >> 8) & 0xff;
+	p[6] = (base >> 16) & 0xff;
+	p[7] = (base >> 24) & 0xff;
+	p[8] = base & 0xff;
+	p[9] = (base >> 8) & 0xff;
+	p[10] = (base >> 16) & 0xff;
+	p[11] = (base >> 24) & 0xff;
+	p[16] = len & 0xff;
+	p[17] = (len >> 8) & 0xff;
+	p[18] = (len >> 16) & 0xff;
+	p[19] = (len >> 24) & 0xff;
+	return;
+}
+
+static void pnpbios_encode_fixed_mem32(unsigned char *p, struct resource * res)
+{	unsigned long base = res->start;
+	unsigned long len = res->end - res->start + 1;
+	p[4] = base & 0xff;
+	p[5] = (base >> 8) & 0xff;
+	p[6] = (base >> 16) & 0xff;
+	p[7] = (base >> 24) & 0xff;
+	p[8] = len & 0xff;
+	p[9] = (len >> 8) & 0xff;
+	p[10] = (len >> 16) & 0xff;
+	p[11] = (len >> 24) & 0xff;
+	return;
+}
+
+static void pnpbios_encode_irq(unsigned char *p, struct resource * res)
+{
+	unsigned long map = 0;
+	map = 1 << res->start;
+	p[1] = map & 0xff;
+	p[2] = (map >> 8) & 0xff;
+	return;
+}
+
+static void pnpbios_encode_dma(unsigned char *p, struct resource * res)
+{
+	unsigned long map = 0;
+	map = 1 << res->start;
+	p[1] = map & 0xff;
+	return;
+}
+
+static void pnpbios_encode_port(unsigned char *p, struct resource * res)
+{
+	unsigned long base = res->start;
+	unsigned long len = res->end - res->start + 1;
+	p[2] = base & 0xff;
+	p[3] = (base >> 8) & 0xff;
+	p[4] = base & 0xff;
+	p[5] = (base >> 8) & 0xff;
+	p[7] = len & 0xff;
+	return;
+}
+
+static void pnpbios_encode_fixed_port(unsigned char *p, struct resource * res)
+{
+	unsigned long base = res->start;
+	unsigned long len = res->end - res->start + 1;
+	p[1] = base & 0xff;
+	p[2] = (base >> 8) & 0xff;
+	p[3] = len & 0xff;
+	return;
+}
+
+static unsigned char *
+pnpbios_encode_allocated_resource_data(unsigned char * p, unsigned char * end, struct pnp_resource_table * res)
+{
+	unsigned int len, tag;
+	int port = 0, irq = 0, dma = 0, mem = 0;
+
+	if (!p)
+		return NULL;
+
+	while ((char *)p < (char *)end) {
+
+		/* determine the type of tag */
+		if (p[0] & LARGE_TAG) { /* large tag */
+			len = (p[2] << 8) | p[1];
+			tag = p[0];
+		} else { /* small tag */
+			len = p[0] & 0x07;
+			tag = ((p[0]>>3) & 0x0f);
+		}
+
+		switch (tag) {
+
+		case LARGE_TAG_MEM:
+			if (len != 9)
+				goto len_err;
+			pnpbios_encode_mem(p, &res->mem_resource[mem]);
+			mem++;
+			break;
+
+		case LARGE_TAG_MEM32:
+			if (len != 17)
+				goto len_err;
+			pnpbios_encode_mem32(p, &res->mem_resource[mem]);
+			mem++;
+			break;
+
+		case LARGE_TAG_FIXEDMEM32:
+			if (len != 9)
+				goto len_err;
+			pnpbios_encode_fixed_mem32(p, &res->mem_resource[mem]);
+			mem++;
+			break;
+
+		case SMALL_TAG_IRQ:
+			if (len < 2 || len > 3)
+				goto len_err;
+			pnpbios_encode_irq(p, &res->irq_resource[irq]);
+			irq++;
+			break;
+
+		case SMALL_TAG_DMA:
+			if (len != 2)
+				goto len_err;
+			pnpbios_encode_dma(p, &res->dma_resource[dma]);
+			dma++;
+			break;
+
+		case SMALL_TAG_PORT:
+			if (len != 7)
+				goto len_err;
+			pnpbios_encode_port(p, &res->port_resource[port]);
+			port++;
+			break;
+
+		case SMALL_TAG_VENDOR:
+			/* do nothing */
+			break;
+
+		case SMALL_TAG_FIXEDPORT:
+			if (len != 3)
+				goto len_err;
+			pnpbios_encode_fixed_port(p, &res->port_resource[port]);
+			port++;
+			break;
+
+		case SMALL_TAG_END:
+			p = p + 2;
+        		return (unsigned char *)p;
+			break;
+
+		default: /* an unkown tag */
+			len_err:
+			printk(KERN_ERR "PnPBIOS: Unknown tag '0x%x', length '%d'.\n", tag, len);
+			break;
+		}
+
+		/* continue to the next tag */
+		if (p[0] & LARGE_TAG)
+			p += len + 3;
+		else
+			p += len + 1;
+	}
+
+	printk(KERN_ERR "PnPBIOS: Resource structure does not contain an end tag.\n");
+
+	return NULL;
+}
+
+
+/*
+ * Core Parsing Functions
+ */
+
+int
+pnpbios_parse_data_stream(struct pnp_dev *dev, struct pnp_bios_node * node)
+{
+	unsigned char * p = (char *)node->data;
+	unsigned char * end = (char *)(node->data + node->size);
+	p = pnpbios_parse_allocated_resource_data(p,end,&dev->res);
+	if (!p)
+		return -EIO;
+	p = pnpbios_parse_resource_option_data(p,end,dev);
+	if (!p)
+		return -EIO;
+	p = pnpbios_parse_compatible_ids(p,end,dev);
+	if (!p)
+		return -EIO;
+	return 0;
+}
+
+int
+pnpbios_read_resources_from_node(struct pnp_resource_table *res,
+				 struct pnp_bios_node * node)
+{
+	unsigned char * p = (char *)node->data;
+	unsigned char * end = (char *)(node->data + node->size);
+	p = pnpbios_parse_allocated_resource_data(p,end,res);
+	if (!p)
+		return -EIO;
+	return 0;
+}
+
+int
+pnpbios_write_resources_to_node(struct pnp_resource_table *res,
+				struct pnp_bios_node * node)
+{
+	unsigned char * p = (char *)node->data;
+	unsigned char * end = (char *)(node->data + node->size);
+	p = pnpbios_encode_allocated_resource_data(p,end,res);
+	if (!p)
+		return -EIO;
+	return 0;
+}

drivers/pnp/quirks.c

@@ -0,0 +1,152 @@
+/*
+ *  This file contains quirk handling code for PnP devices
+ *  Some devices do not report all their resources, and need to have extra
+ *  resources added. This is most easily accomplished at initialisation time
+ *  when building up the resource structure for the first time.
+ *
+ *  Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
+ *
+ *  Heavily based on PCI quirks handling which is
+ *
+ *  Copyright (c) 1999 Martin Mares <mj@ucw.cz>
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#ifdef CONFIG_PNP_DEBUG
+	#define DEBUG
+#else
+	#undef DEBUG
+#endif
+
+#include <linux/pnp.h>
+#include "base.h"
+
+
+static void quirk_awe32_resources(struct pnp_dev *dev)
+{
+	struct pnp_port *port, *port2, *port3;
+	struct pnp_option *res = dev->dependent;
+
+	/*
+	 * Unfortunately the isapnp_add_port_resource is too tightly bound
+	 * into the PnP discovery sequence, and cannot be used. Link in the
+	 * two extra ports (at offset 0x400 and 0x800 from the one given) by
+	 * hand.
+	 */
+	for ( ; res ; res = res->next ) {
+		port2 = pnp_alloc(sizeof(struct pnp_port));
+		if (!port2)
+			return;
+		port3 = pnp_alloc(sizeof(struct pnp_port));
+		if (!port3) {
+			kfree(port2);
+			return;
+		}
+		port = res->port;
+		memcpy(port2, port, sizeof(struct pnp_port));
+		memcpy(port3, port, sizeof(struct pnp_port));
+		port->next = port2;
+		port2->next = port3;
+		port2->min += 0x400;
+		port2->max += 0x400;
+		port3->min += 0x800;
+		port3->max += 0x800;
+	}
+	printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
+}
+
+static void quirk_cmi8330_resources(struct pnp_dev *dev)
+{
+	struct pnp_option *res = dev->dependent;
+	unsigned long tmp;
+
+	for ( ; res ; res = res->next ) {
+
+		struct pnp_irq *irq;
+		struct pnp_dma *dma;
+
+		for( irq = res->irq; irq; irq = irq->next ) {	// Valid irqs are 5, 7, 10
+			tmp = 0x04A0;
+			bitmap_copy(irq->map, &tmp, 16);	// 0000 0100 1010 0000
+		}
+
+		for( dma = res->dma; dma; dma = dma->next ) // Valid 8bit dma channels are 1,3
+			if( ( dma->flags & IORESOURCE_DMA_TYPE_MASK ) == IORESOURCE_DMA_8BIT )
+				dma->map = 0x000A;
+	}
+	printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
+}
+
+static void quirk_sb16audio_resources(struct pnp_dev *dev)
+{
+	struct pnp_port *port;
+	struct pnp_option *res = dev->dependent;
+	int    changed = 0;
+
+	/*
+	 * The default range on the mpu port for these devices is 0x388-0x388.
+	 * Here we increase that range so that two such cards can be
+	 * auto-configured.
+	 */
+
+	for( ; res ; res = res->next ) {
+		port = res->port;
+		if(!port)
+			continue;
+		port = port->next;
+		if(!port)
+			continue;
+		port = port->next;
+		if(!port)
+			continue;
+		if(port->min != port->max)
+			continue;
+		port->max += 0x70;
+		changed = 1;
+	}
+	if(changed)
+		printk(KERN_INFO "pnp: SB audio device quirk - increasing port range\n");
+	return;
+}
+
+/*
+ *  PnP Quirks
+ *  Cards or devices that need some tweaking due to incomplete resource info
+ */
+
+static struct pnp_fixup pnp_fixups[] = {
+	/* Soundblaster awe io port quirk */
+	{ "CTL0021", quirk_awe32_resources },
+	{ "CTL0022", quirk_awe32_resources },
+	{ "CTL0023", quirk_awe32_resources },
+	/* CMI 8330 interrupt and dma fix */
+	{ "@X@0001", quirk_cmi8330_resources },
+	/* Soundblaster audio device io port range quirk */
+	{ "CTL0001", quirk_sb16audio_resources },
+	{ "CTL0031", quirk_sb16audio_resources },
+	{ "CTL0041", quirk_sb16audio_resources },
+	{ "CTL0042", quirk_sb16audio_resources },
+	{ "CTL0043", quirk_sb16audio_resources },
+	{ "CTL0044", quirk_sb16audio_resources },
+	{ "CTL0045", quirk_sb16audio_resources },
+	{ "" }
+};
+
+void pnp_fixup_device(struct pnp_dev *dev)
+{
+	int i = 0;
+
+	while (*pnp_fixups[i].id) {
+		if (compare_pnp_id(dev->id,pnp_fixups[i].id)) {
+			pnp_dbg("Calling quirk for %s",
+		                  dev->dev.bus_id);
+			pnp_fixups[i].quirk_function(dev);
+		}
+		i++;
+	}
+}

drivers/pnp/resource.c

@@ -0,0 +1,542 @@
+/*
+ * resource.c - Contains functions for registering and analyzing resource information
+ *
+ * based on isapnp.c resource management (c) Jaroslav Kysela <perex@suse.cz>
+ * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/irq.h>
+#include <linux/pci.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+
+#include <linux/pnp.h>
+#include "base.h"
+
+static int pnp_reserve_irq[16] = { [0 ... 15] = -1 };	/* reserve (don't use) some IRQ */
+static int pnp_reserve_dma[8] = { [0 ... 7] = -1 };	/* reserve (don't use) some DMA */
+static int pnp_reserve_io[16] = { [0 ... 15] = -1 };	/* reserve (don't use) some I/O region */
+static int pnp_reserve_mem[16] = { [0 ... 15] = -1 };	/* reserve (don't use) some memory region */
+
+
+/*
+ * option registration
+ */
+
+static struct pnp_option * pnp_build_option(int priority)
+{
+	struct pnp_option *option = pnp_alloc(sizeof(struct pnp_option));
+
+	/* check if pnp_alloc ran out of memory */
+	if (!option)
+		return NULL;
+
+	option->priority = priority & 0xff;
+	/* make sure the priority is valid */
+	if (option->priority > PNP_RES_PRIORITY_FUNCTIONAL)
+		option->priority = PNP_RES_PRIORITY_INVALID;
+
+	return option;
+}
+
+struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev)
+{
+	struct pnp_option *option;
+	if (!dev)
+		return NULL;
+
+	option = pnp_build_option(PNP_RES_PRIORITY_PREFERRED);
+
+	/* this should never happen but if it does we'll try to continue */
+	if (dev->independent)
+		pnp_err("independent resource already registered");
+	dev->independent = option;
+	return option;
+}
+
+struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority)
+{
+	struct pnp_option *option;
+	if (!dev)
+		return NULL;
+
+	option = pnp_build_option(priority);
+
+	if (dev->dependent) {
+		struct pnp_option *parent = dev->dependent;
+		while (parent->next)
+			parent = parent->next;
+		parent->next = option;
+	} else
+		dev->dependent = option;
+	return option;
+}
+
+int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data)
+{
+	struct pnp_irq *ptr;
+	if (!option)
+		return -EINVAL;
+	if (!data)
+		return -EINVAL;
+
+	ptr = option->irq;
+	while (ptr && ptr->next)
+		ptr = ptr->next;
+	if (ptr)
+		ptr->next = data;
+	else
+		option->irq = data;
+
+#ifdef CONFIG_PCI
+	{
+		int i;
+
+		for (i = 0; i < 16; i++)
+			if (test_bit(i, data->map))
+				pcibios_penalize_isa_irq(i);
+	}
+#endif
+	return 0;
+}
+
+int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data)
+{
+	struct pnp_dma *ptr;
+	if (!option)
+		return -EINVAL;
+	if (!data)
+		return -EINVAL;
+
+	ptr = option->dma;
+	while (ptr && ptr->next)
+		ptr = ptr->next;
+	if (ptr)
+		ptr->next = data;
+	else
+		option->dma = data;
+
+	return 0;
+}
+
+int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data)
+{
+	struct pnp_port *ptr;
+	if (!option)
+		return -EINVAL;
+	if (!data)
+		return -EINVAL;
+
+	ptr = option->port;
+	while (ptr && ptr->next)
+		ptr = ptr->next;
+	if (ptr)
+		ptr->next = data;
+	else
+		option->port = data;
+
+	return 0;
+}
+
+int pnp_register_mem_resource(struct pnp_option *option, struct pnp_mem *data)
+{
+	struct pnp_mem *ptr;
+	if (!option)
+		return -EINVAL;
+	if (!data)
+		return -EINVAL;
+
+	ptr = option->mem;
+	while (ptr && ptr->next)
+		ptr = ptr->next;
+	if (ptr)
+		ptr->next = data;
+	else
+		option->mem = data;
+	return 0;
+}
+
+static void pnp_free_port(struct pnp_port *port)
+{
+	struct pnp_port *next;
+
+	while (port) {
+		next = port->next;
+		kfree(port);
+		port = next;
+	}
+}
+
+static void pnp_free_irq(struct pnp_irq *irq)
+{
+	struct pnp_irq *next;
+
+	while (irq) {
+		next = irq->next;
+		kfree(irq);
+		irq = next;
+	}
+}
+
+static void pnp_free_dma(struct pnp_dma *dma)
+{
+	struct pnp_dma *next;
+
+	while (dma) {
+		next = dma->next;
+		kfree(dma);
+		dma = next;
+	}
+}
+
+static void pnp_free_mem(struct pnp_mem *mem)
+{
+	struct pnp_mem *next;
+
+	while (mem) {
+		next = mem->next;
+		kfree(mem);
+		mem = next;
+	}
+}
+
+void pnp_free_option(struct pnp_option *option)
+{
+	struct pnp_option *next;
+
+	while (option) {
+		next = option->next;
+		pnp_free_port(option->port);
+		pnp_free_irq(option->irq);
+		pnp_free_dma(option->dma);
+		pnp_free_mem(option->mem);
+		kfree(option);
+		option = next;
+	}
+}
+
+
+/*
+ * resource validity checking
+ */
+
+#define length(start, end) (*(end) - *(start) + 1)
+
+/* Two ranges conflict if one doesn't end before the other starts */
+#define ranged_conflict(starta, enda, startb, endb) \
+	!((*(enda) < *(startb)) || (*(endb) < *(starta)))
+
+#define cannot_compare(flags) \
+((flags) & (IORESOURCE_UNSET | IORESOURCE_DISABLED))
+
+int pnp_check_port(struct pnp_dev * dev, int idx)
+{
+	int tmp;
+	struct pnp_dev *tdev;
+	unsigned long *port, *end, *tport, *tend;
+	port = &dev->res.port_resource[idx].start;
+	end = &dev->res.port_resource[idx].end;
+
+	/* if the resource doesn't exist, don't complain about it */
+	if (cannot_compare(dev->res.port_resource[idx].flags))
+		return 1;
+
+	/* check if the resource is already in use, skip if the
+	 * device is active because it itself may be in use */
+	if(!dev->active) {
+		if (__check_region(&ioport_resource, *port, length(port,end)))
+			return 0;
+	}
+
+	/* check if the resource is reserved */
+	for (tmp = 0; tmp < 8; tmp++) {
+		int rport = pnp_reserve_io[tmp << 1];
+		int rend = pnp_reserve_io[(tmp << 1) + 1] + rport - 1;
+		if (ranged_conflict(port,end,&rport,&rend))
+			return 0;
+	}
+
+	/* check for internal conflicts */
+	for (tmp = 0; tmp < PNP_MAX_PORT && tmp != idx; tmp++) {
+		if (dev->res.port_resource[tmp].flags & IORESOURCE_IO) {
+			tport = &dev->res.port_resource[tmp].start;
+			tend = &dev->res.port_resource[tmp].end;
+			if (ranged_conflict(port,end,tport,tend))
+				return 0;
+		}
+	}
+
+	/* check for conflicts with other pnp devices */
+	pnp_for_each_dev(tdev) {
+		if (tdev == dev)
+			continue;
+		for (tmp = 0; tmp < PNP_MAX_PORT; tmp++) {
+			if (tdev->res.port_resource[tmp].flags & IORESOURCE_IO) {
+				if (cannot_compare(tdev->res.port_resource[tmp].flags))
+					continue;
+				tport = &tdev->res.port_resource[tmp].start;
+				tend = &tdev->res.port_resource[tmp].end;
+				if (ranged_conflict(port,end,tport,tend))
+					return 0;
+			}
+		}
+	}
+
+	return 1;
+}
+
+int pnp_check_mem(struct pnp_dev * dev, int idx)
+{
+	int tmp;
+	struct pnp_dev *tdev;
+	unsigned long *addr, *end, *taddr, *tend;
+	addr = &dev->res.mem_resource[idx].start;
+	end = &dev->res.mem_resource[idx].end;
+
+	/* if the resource doesn't exist, don't complain about it */
+	if (cannot_compare(dev->res.mem_resource[idx].flags))
+		return 1;
+
+	/* check if the resource is already in use, skip if the
+	 * device is active because it itself may be in use */
+	if(!dev->active) {
+		if (check_mem_region(*addr, length(addr,end)))
+			return 0;
+	}
+
+	/* check if the resource is reserved */
+	for (tmp = 0; tmp < 8; tmp++) {
+		int raddr = pnp_reserve_mem[tmp << 1];
+		int rend = pnp_reserve_mem[(tmp << 1) + 1] + raddr - 1;
+		if (ranged_conflict(addr,end,&raddr,&rend))
+			return 0;
+	}
+
+	/* check for internal conflicts */
+	for (tmp = 0; tmp < PNP_MAX_MEM && tmp != idx; tmp++) {
+		if (dev->res.mem_resource[tmp].flags & IORESOURCE_MEM) {
+			taddr = &dev->res.mem_resource[tmp].start;
+			tend = &dev->res.mem_resource[tmp].end;
+			if (ranged_conflict(addr,end,taddr,tend))
+				return 0;
+		}
+	}
+
+	/* check for conflicts with other pnp devices */
+	pnp_for_each_dev(tdev) {
+		if (tdev == dev)
+			continue;
+		for (tmp = 0; tmp < PNP_MAX_MEM; tmp++) {
+			if (tdev->res.mem_resource[tmp].flags & IORESOURCE_MEM) {
+				if (cannot_compare(tdev->res.mem_resource[tmp].flags))
+					continue;
+				taddr = &tdev->res.mem_resource[tmp].start;
+				tend = &tdev->res.mem_resource[tmp].end;
+				if (ranged_conflict(addr,end,taddr,tend))
+					return 0;
+			}
+		}
+	}
+
+	return 1;
+}
+
+static irqreturn_t pnp_test_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+	return IRQ_HANDLED;
+}
+
+int pnp_check_irq(struct pnp_dev * dev, int idx)
+{
+	int tmp;
+	struct pnp_dev *tdev;
+	unsigned long * irq = &dev->res.irq_resource[idx].start;
+
+	/* if the resource doesn't exist, don't complain about it */
+	if (cannot_compare(dev->res.irq_resource[idx].flags))
+		return 1;
+
+	/* check if the resource is valid */
+	if (*irq < 0 || *irq > 15)
+		return 0;
+
+	/* check if the resource is reserved */
+	for (tmp = 0; tmp < 16; tmp++) {
+		if (pnp_reserve_irq[tmp] == *irq)
+			return 0;
+	}
+
+	/* check for internal conflicts */
+	for (tmp = 0; tmp < PNP_MAX_IRQ && tmp != idx; tmp++) {
+		if (dev->res.irq_resource[tmp].flags & IORESOURCE_IRQ) {
+			if (dev->res.irq_resource[tmp].start == *irq)
+				return 0;
+		}
+	}
+
+#ifdef CONFIG_PCI
+	/* check if the resource is being used by a pci device */
+	{
+		struct pci_dev *pci = NULL;
+		for_each_pci_dev(pci) {
+			if (pci->irq == *irq)
+				return 0;
+		}
+	}
+#endif
+
+	/* check if the resource is already in use, skip if the
+	 * device is active because it itself may be in use */
+	if(!dev->active) {
+		if (request_irq(*irq, pnp_test_handler, SA_INTERRUPT, "pnp", NULL))
+			return 0;
+		free_irq(*irq, NULL);
+	}
+
+	/* check for conflicts with other pnp devices */
+	pnp_for_each_dev(tdev) {
+		if (tdev == dev)
+			continue;
+		for (tmp = 0; tmp < PNP_MAX_IRQ; tmp++) {
+			if (tdev->res.irq_resource[tmp].flags & IORESOURCE_IRQ) {
+				if (cannot_compare(tdev->res.irq_resource[tmp].flags))
+					continue;
+				if ((tdev->res.irq_resource[tmp].start == *irq))
+					return 0;
+			}
+		}
+	}
+
+	return 1;
+}
+
+int pnp_check_dma(struct pnp_dev * dev, int idx)
+{
+#ifndef CONFIG_IA64
+	int tmp;
+	struct pnp_dev *tdev;
+	unsigned long * dma = &dev->res.dma_resource[idx].start;
+
+	/* if the resource doesn't exist, don't complain about it */
+	if (cannot_compare(dev->res.dma_resource[idx].flags))
+		return 1;
+
+	/* check if the resource is valid */
+	if (*dma < 0 || *dma == 4 || *dma > 7)
+		return 0;
+
+	/* check if the resource is reserved */
+	for (tmp = 0; tmp < 8; tmp++) {
+		if (pnp_reserve_dma[tmp] == *dma)
+			return 0;
+	}
+
+	/* check for internal conflicts */
+	for (tmp = 0; tmp < PNP_MAX_DMA && tmp != idx; tmp++) {
+		if (dev->res.dma_resource[tmp].flags & IORESOURCE_DMA) {
+			if (dev->res.dma_resource[tmp].start == *dma)
+				return 0;
+		}
+	}
+
+	/* check if the resource is already in use, skip if the
+	 * device is active because it itself may be in use */
+	if(!dev->active) {
+		if (request_dma(*dma, "pnp"))
+			return 0;
+		free_dma(*dma);
+	}
+
+	/* check for conflicts with other pnp devices */
+	pnp_for_each_dev(tdev) {
+		if (tdev == dev)
+			continue;
+		for (tmp = 0; tmp < PNP_MAX_DMA; tmp++) {
+			if (tdev->res.dma_resource[tmp].flags & IORESOURCE_DMA) {
+				if (cannot_compare(tdev->res.dma_resource[tmp].flags))
+					continue;
+				if ((tdev->res.dma_resource[tmp].start == *dma))
+					return 0;
+			}
+		}
+	}
+
+	return 1;
+#else
+	/* IA64 hasn't legacy DMA */
+	return 0;
+#endif
+}
+
+
+EXPORT_SYMBOL(pnp_register_dependent_option);
+EXPORT_SYMBOL(pnp_register_independent_option);
+EXPORT_SYMBOL(pnp_register_irq_resource);
+EXPORT_SYMBOL(pnp_register_dma_resource);
+EXPORT_SYMBOL(pnp_register_port_resource);
+EXPORT_SYMBOL(pnp_register_mem_resource);
+
+
+/* format is: pnp_reserve_irq=irq1[,irq2] .... */
+
+static int __init pnp_setup_reserve_irq(char *str)
+{
+	int i;
+
+	for (i = 0; i < 16; i++)
+		if (get_option(&str,&pnp_reserve_irq[i]) != 2)
+			break;
+	return 1;
+}
+
+__setup("pnp_reserve_irq=", pnp_setup_reserve_irq);
+
+/* format is: pnp_reserve_dma=dma1[,dma2] .... */
+
+static int __init pnp_setup_reserve_dma(char *str)
+{
+	int i;
+
+	for (i = 0; i < 8; i++)
+		if (get_option(&str,&pnp_reserve_dma[i]) != 2)
+			break;
+	return 1;
+}
+
+__setup("pnp_reserve_dma=", pnp_setup_reserve_dma);
+
+/* format is: pnp_reserve_io=io1,size1[,io2,size2] .... */
+
+static int __init pnp_setup_reserve_io(char *str)
+{
+	int i;
+
+	for (i = 0; i < 16; i++)
+		if (get_option(&str,&pnp_reserve_io[i]) != 2)
+			break;
+	return 1;
+}
+
+__setup("pnp_reserve_io=", pnp_setup_reserve_io);
+
+/* format is: pnp_reserve_mem=mem1,size1[,mem2,size2] .... */
+
+static int __init pnp_setup_reserve_mem(char *str)
+{
+	int i;
+
+	for (i = 0; i < 16; i++)
+		if (get_option(&str,&pnp_reserve_mem[i]) != 2)
+			break;
+	return 1;
+}
+
+__setup("pnp_reserve_mem=", pnp_setup_reserve_mem);

drivers/pnp/support.c

@@ -0,0 +1,40 @@
+/*
+ * support.c - provides standard pnp functions for the use of pnp protocol drivers,
+ *
+ * Copyright 2003 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/ctype.h>
+
+#ifdef CONFIG_PNP_DEBUG
+	#define DEBUG
+#else
+	#undef DEBUG
+#endif
+
+#include <linux/pnp.h>
+#include "base.h"
+
+/**
+ * pnp_is_active - Determines if a device is active based on its current resources
+ * @dev: pointer to the desired PnP device
+ *
+ */
+
+int pnp_is_active(struct pnp_dev * dev)
+{
+	if (!pnp_port_start(dev, 0) && pnp_port_len(dev, 0) <= 1 &&
+	    !pnp_mem_start(dev, 0) && pnp_mem_len(dev, 0) <= 1 &&
+	    pnp_irq(dev, 0) == -1 &&
+	    pnp_dma(dev, 0) == -1)
+	    	return 0;
+	else
+		return 1;
+}
+
+
+
+EXPORT_SYMBOL(pnp_is_active);

drivers/pnp/system.c

@@ -0,0 +1,111 @@
+/*
+ * system.c - a driver for reserving pnp system resources
+ *
+ * Some code is based on pnpbios_core.c
+ * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
+ *
+ */
+
+#include <linux/pnp.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+
+static const struct pnp_device_id pnp_dev_table[] = {
+	/* General ID for reserving resources */
+	{	"PNP0c02",		0	},
+	/* memory controller */
+	{	"PNP0c01",		0	},
+	{	"",			0	}
+};
+
+static void reserve_ioport_range(char *pnpid, int start, int end)
+{
+	struct resource *res;
+	char *regionid;
+
+	regionid = kmalloc(16, GFP_KERNEL);
+	if ( regionid == NULL )
+		return;
+	snprintf(regionid, 16, "pnp %s", pnpid);
+	res = request_region(start,end-start+1,regionid);
+	if ( res == NULL )
+		kfree( regionid );
+	else
+		res->flags &= ~IORESOURCE_BUSY;
+	/*
+	 * Failures at this point are usually harmless. pci quirks for
+	 * example do reserve stuff they know about too, so we may well
+	 * have double reservations.
+	 */
+	printk(KERN_INFO
+		"pnp: %s: ioport range 0x%x-0x%x %s reserved\n",
+		pnpid, start, end,
+		NULL != res ? "has been" : "could not be"
+	);
+
+	return;
+}
+
+static void reserve_resources_of_dev( struct pnp_dev *dev )
+{
+	int i;
+
+	for (i=0;i<PNP_MAX_PORT;i++) {
+		if (!pnp_port_valid(dev, i))
+			/* end of resources */
+			continue;
+		if (pnp_port_start(dev, i) == 0)
+			/* disabled */
+			/* Do nothing */
+			continue;
+		if (pnp_port_start(dev, i) < 0x100)
+			/*
+			 * Below 0x100 is only standard PC hardware
+			 * (pics, kbd, timer, dma, ...)
+			 * We should not get resource conflicts there,
+			 * and the kernel reserves these anyway
+			 * (see arch/i386/kernel/setup.c).
+			 * So, do nothing
+			 */
+			continue;
+		if (pnp_port_end(dev, i) < pnp_port_start(dev, i))
+			/* invalid endpoint */
+			/* Do nothing */
+			continue;
+		reserve_ioport_range(
+			dev->dev.bus_id,
+			pnp_port_start(dev, i),
+			pnp_port_end(dev, i)
+		);
+	}
+
+	return;
+}
+
+static int system_pnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id)
+{
+	reserve_resources_of_dev(dev);
+	return 0;
+}
+
+static struct pnp_driver system_pnp_driver = {
+	.name		= "system",
+	.id_table	= pnp_dev_table,
+	.flags		= PNP_DRIVER_RES_DO_NOT_CHANGE,
+	.probe		= system_pnp_probe,
+	.remove		= NULL,
+};
+
+static int __init pnp_system_init(void)
+{
+	return pnp_register_driver(&system_pnp_driver);
+}
+
+/**
+ * Reserve motherboard resources after PCI claim BARs,
+ * but before PCI assign resources for uninitialized PCI devices
+ */
+fs_initcall(pnp_system_init);