patch-2.4.20 linux-2.4.20/drivers/hotplug/pcihp_acpi.c

• Lines: 398
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.19/drivers/hotplug/pcihp_acpi.c
• Orig date: Fri Aug 2 17:39:44 2002

diff -urN linux-2.4.19/drivers/hotplug/pcihp_acpi.c linux-2.4.20/drivers/hotplug/pcihp_acpi.c
@@ -1,397 +0,0 @@
-/*
- * ACPI PCI Hot Plug Controller Driver
- *
- * Copyright (c) 2001-2002 Greg Kroah-Hartman (greg@kroah.com)
- * Copyright (c) 2001-2002 IBM Corp.
- * Copyright (c) 2002 Hiroshi Aono (h-aono@ap.jp.nec.com)
- * Copyright (c) 2002 Takayoshi Kochi (t-kouchi@cq.jp.nec.com)
- * Copyright (c) 2002 NEC Corporation
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Send feedback to <gregkh@us.ibm.com>,
- *                  <h-aono@ap.jp.nec.com>,
- *		    <t-kouchi@cq.jp.nec.com>
- *
- */
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include "pci_hotplug.h"
-#include "pcihp_acpi.h"
-
-static LIST_HEAD(slot_list);
-
-#if !defined(CONFIG_HOTPLUG_PCI_ACPI_MODULE)
-	#define MY_NAME	"pcihp_acpi"
-#else
-	#define MY_NAME	THIS_MODULE->name
-#endif
-
-/* local variables */
-static int debug = 1;			/* XXX */
-static int num_slots;
-
-#define DRIVER_VERSION	"0.2"
-#define DRIVER_AUTHOR	"Greg Kroah-Hartman <gregkh@us.ibm.com>"
-#define DRIVER_DESC	"ACPI Hot Plug PCI Controller Driver"
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
-MODULE_PARM(debug, "i");
-MODULE_PARM_DESC(debug, "Debugging mode enabled or not");
-
-static int enable_slot		(struct hotplug_slot *slot);
-static int disable_slot		(struct hotplug_slot *slot);
-static int set_attention_status (struct hotplug_slot *slot, u8 value);
-static int hardware_test	(struct hotplug_slot *slot, u32 value);
-static int get_power_status	(struct hotplug_slot *slot, u8 *value);
-static int get_attention_status	(struct hotplug_slot *slot, u8 *value);
-static int get_latch_status	(struct hotplug_slot *slot, u8 *value);
-static int get_adapter_status	(struct hotplug_slot *slot, u8 *value);
-
-static struct hotplug_slot_ops acpi_hotplug_slot_ops = {
-	owner:			THIS_MODULE,
-	enable_slot:		enable_slot,
-	disable_slot:		disable_slot,
-	set_attention_status:	set_attention_status,
-	hardware_test:		hardware_test,
-	get_power_status:	get_power_status,
-	get_attention_status:	get_attention_status,
-	get_latch_status:	get_latch_status,
-	get_adapter_status:	get_adapter_status,
-};
-
-
-/* Inline functions to check the sanity of a pointer that is passed to us */
-static inline int slot_paranoia_check (struct slot *slot, const char *function)
-{
-	if (!slot) {
-		dbg("%s - slot == NULL", function);
-		return -1;
-	}
-	if (slot->magic != SLOT_MAGIC) {
-		dbg("%s - bad magic number for slot", function);
-		return -1;
-	}
-	if (!slot->hotplug_slot) {
-		dbg("%s - slot->hotplug_slot == NULL!", function);
-		return -1;
-	}
-	return 0;
-}
-
-static inline struct slot *get_slot (struct hotplug_slot *hotplug_slot, const char *function)
-{ 
-	struct slot *slot;
-
-	if (!hotplug_slot) {
-		dbg("%s - hotplug_slot == NULL", function);
-		return NULL;
-	}
-
-	slot = (struct slot *)hotplug_slot->private;
-	if (slot_paranoia_check (slot, function))
-                return NULL;
-	return slot;
-}
-
-
-static int enable_slot (struct hotplug_slot *hotplug_slot)
-{
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
-	int retval = 0;
-	
-	if (slot == NULL)
-		return -ENODEV;
-	
-	dbg ("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
-
-	/* enable the specified slot */
-	retval = pcihp_acpi_enable_slot (slot->acpi_slot);
-
-	return retval;
-}
-
-static int disable_slot (struct hotplug_slot *hotplug_slot)
-{
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
-	int retval = 0;
-	
-	if (slot == NULL)
-		return -ENODEV;
-	
-	dbg ("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
-
-	/* disable the specified slot */
-	retval = pcihp_acpi_disable_slot (slot->acpi_slot);
-
-	return retval;
-}
-
-static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
-{
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
-	int retval = 0;
-	
-	if (slot == NULL)
-		return -ENODEV;
-	
-	dbg ("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
-
-	/* TBD
-	 * ACPI doesn't have known method to manipulate
-	 * attention status LED
-	 */
-	switch (status) {
-		case 0:
-			/* FIXME turn light off */
-			slot->attention_status = 0;
-			break;
-
-		case 1:
-		default:
-			/* FIXME turn light on */
-			slot->attention_status = 1;
-			break;
-	}
-
-	return retval;
-}
-
-static int hardware_test (struct hotplug_slot *hotplug_slot, u32 value)
-{
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
-	int retval = 0;
-	
-	if (slot == NULL)
-		return -ENODEV;
-	
-	dbg ("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
-
-	err ("No hardware tests are defined for this driver");
-	retval = -ENODEV;
-
-	return retval;
-}
-
-static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
-{
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
-	int retval = 0;
-	
-	if (slot == NULL)
-		return -ENODEV;
-	
-	dbg("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
-
-	*value = pcihp_acpi_get_power_status (slot->acpi_slot);
-
-	return retval;
-}
-
-static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
-{
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
-	int retval = 0;
-	
-	if (slot == NULL)
-		return -ENODEV;
-	
-	dbg("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
-
-	*value = slot->attention_status;
-
-	return retval;
-}
-
-static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
-{
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
-	int retval = 0;
-	
-	if (slot == NULL)
-		return -ENODEV;
-	
-	dbg("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
-
-	*value = pcihp_acpi_get_latch_status (slot->acpi_slot);
-
-	return retval;
-}
-
-static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
-{
-	struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
-	int retval = 0;
-	
-	if (slot == NULL)
-		return -ENODEV;
-	
-	dbg("%s - physical_slot = %s", __FUNCTION__, hotplug_slot->name);
-
-	*value = pcihp_acpi_get_adapter_status (slot->acpi_slot);
-
-	return retval;
-}
-
-static int init_acpi (void)
-{
-	int retval;
-
-	dbg("init_acpi");		/* XXX */
-	/* initialize internal data structure etc. */
-	retval = pcihp_acpi_glue_init();
-
-	/* read initial number of slots */
-	if (!retval) {
-		num_slots = pcihp_acpi_get_num_slots();
-		if (num_slots == 0)
-			retval = -ENODEV;
-	}
-
-	return retval;
-}
-
-static void exit_acpi (void)
-{
-	/* deallocate internal data structures etc. */
-	pcihp_acpi_glue_exit();
-}
-
-#define SLOT_NAME_SIZE	10
-static void make_slot_name (struct slot *slot)
-{
-	/* FIXME - get this from the ACPI representation of the slot */
-	snprintf (slot->hotplug_slot->name, SLOT_NAME_SIZE, "ACPI%d", slot->number);
-}
-
-static int init_slots (void)
-{
-	struct slot *slot;
-	int retval = 0;
-	int i;
-
-	for (i = 0; i < num_slots; ++i) {
-		slot = kmalloc (sizeof (struct slot), GFP_KERNEL);
-		if (!slot)
-			return -ENOMEM;
-		memset(slot, 0, sizeof(struct slot));
-
-		slot->hotplug_slot = kmalloc (sizeof (struct hotplug_slot), GFP_KERNEL);
-		if (!slot->hotplug_slot) {
-			kfree (slot);
-			return -ENOMEM;
-		}
-		memset(slot->hotplug_slot, 0, sizeof (struct hotplug_slot));
-
-		slot->hotplug_slot->info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
-		if (!slot->hotplug_slot->info) {
-			kfree (slot->hotplug_slot);
-			kfree (slot);
-			return -ENOMEM;
-		}
-		memset(slot->hotplug_slot->info, 0, sizeof (struct hotplug_slot_info));
-
-		slot->hotplug_slot->name = kmalloc (SLOT_NAME_SIZE, GFP_KERNEL);
-		if (!slot->hotplug_slot->name) {
-			kfree (slot->hotplug_slot->info);
-			kfree (slot->hotplug_slot);
-			kfree (slot);
-			return -ENOMEM;
-		}
-
-		slot->magic = SLOT_MAGIC;
-		slot->number = i;
-
-		slot->hotplug_slot->private = slot;
-		make_slot_name (slot);
-		slot->hotplug_slot->ops = &acpi_hotplug_slot_ops;
-		
-		slot->acpi_slot = get_slot_from_id (i);
-		slot->hotplug_slot->info->power_status = pcihp_acpi_get_power_status(slot->acpi_slot);
-		slot->hotplug_slot->info->attention_status = pcihp_acpi_get_attention_status(slot->acpi_slot);
-		slot->hotplug_slot->info->latch_status = pcihp_acpi_get_latch_status(slot->acpi_slot);
-		slot->hotplug_slot->info->adapter_status = pcihp_acpi_get_adapter_status(slot->acpi_slot);
-
-		dbg ("registering slot %d", i);
-		retval = pci_hp_register (slot->hotplug_slot);
-		if (retval) {
-			err ("pci_hp_register failed with error %d", retval);
-			kfree (slot->hotplug_slot->info);
-			kfree (slot->hotplug_slot->name);
-			kfree (slot->hotplug_slot);
-			kfree (slot);
-			return retval;
-		}
-
-		/* add slot to our internal list */
-		list_add (&slot->slot_list, &slot_list);
-	}
-
-	return retval;
-}
-		
-static void cleanup_slots (void)
-{
-	struct list_head *tmp;
-	struct slot *slot;
-
-	list_for_each (tmp, &slot_list) {
-		slot = list_entry (tmp, struct slot, slot_list);
-		list_del (&slot->slot_list);
-		pci_hp_deregister (slot->hotplug_slot);
-		kfree (slot->hotplug_slot->info);
-		kfree (slot->hotplug_slot->name);
-		kfree (slot->hotplug_slot);
-		kfree (slot);
-	}
-
-	return;
-}
-
-static int __init pcihp_acpi_init(void)
-{
-	int retval;
-
-	/* read all the ACPI info from the system */
-	retval = init_acpi();
-	if (retval)
-		return retval;
-
-	retval = init_slots();
-	if (retval)
-		return retval;
-
-	info (DRIVER_DESC " version: " DRIVER_VERSION);
-	return 0;
-}
-
-static void __exit pcihp_acpi_exit(void)
-{
-	cleanup_slots();
-	exit_acpi();
-}
-
-module_init(pcihp_acpi_init);
-module_exit(pcihp_acpi_exit);