patch-2.4.22 linux-2.4.22/drivers/acpi/ospm/busmgr/bm_osl.c

• Lines: 391
• Date: 1969-12-31 16:00:00.000000000 -0800
• Orig file: linux-2.4.21/drivers/acpi/ospm/busmgr/bm_osl.c
• Orig date: 2002-11-28 15:53:12.000000000 -0800

diff -urN linux-2.4.21/drivers/acpi/ospm/busmgr/bm_osl.c linux-2.4.22/drivers/acpi/ospm/busmgr/bm_osl.c
@@ -1,390 +0,0 @@
-/*****************************************************************************
- *
- * Module Name: bm_osl.c
- *   $Revision: 17 $
- *
- *****************************************************************************/
-
-/*
- *  Copyright (C) 2000, 2001 Andrew Grover
- *
- *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-#include <linux/poll.h>
-#include <asm/uaccess.h>
-#include <acpi.h>
-#include "bm.h"
-
-
-MODULE_AUTHOR("Andrew Grover");
-MODULE_DESCRIPTION("ACPI Component Architecture (CA) - ACPI Bus Manager");
-MODULE_LICENSE("GPL");
-
-
-/*****************************************************************************
- *                               Types & Defines
- *****************************************************************************/
-
-typedef struct
-{
-	BM_HANDLE		device_handle;
-	char			*device_type;
-	char			*device_instance;
-	u32			event_type;
-	u32			event_data;
-	struct list_head	list;
-} BM_OSL_EVENT;
-
-
-#define BM_PROC_ROOT		"acpi"
-#define BM_PROC_EVENT		"event"
-#define BM_PROC_DEVICES		"devices"
-
-#define BM_MAX_STRING_LENGTH	80
-
-
-/****************************************************************************
- *                                  Globals
- ****************************************************************************/
-
-struct proc_dir_entry		*bm_proc_root = NULL;
-static struct proc_dir_entry	*bm_proc_event = NULL;
-
-#ifdef ACPI_DEBUG
-static u32			save_dbg_layer;
-static u32			save_dbg_level;
-#endif /*ACPI_DEBUG*/
-
-extern BM_NODE_LIST		node_list;
-
-static spinlock_t		bm_osl_event_lock = SPIN_LOCK_UNLOCKED;
-
-static LIST_HEAD(bm_event_list);
-
-static DECLARE_WAIT_QUEUE_HEAD(bm_event_wait_queue);
-
-static int event_is_open = 0;
-
-
-/****************************************************************************
- *                                 Functions
- ****************************************************************************/
-
-/****************************************************************************
- *
- * FUNCTION:	bm_osl_generate_event
- *
- * DESCRIPTION: Generates an event for user-space consumption by writing
- *              the event data to the 'event' file.
- *
- ****************************************************************************/
-
-acpi_status
-bm_osl_generate_event (
-	BM_HANDLE		device_handle,
-	char			*device_type,
-	char			*device_instance,
-	u32			event_type,
-	u32			event_data)
-{
-	BM_OSL_EVENT		*event = NULL;
-	unsigned long		flags = 0;
-
-	/* drop event on the floor if no one's listening */
-	if (!event_is_open)
-		return (AE_OK);
-
-	/*
-	 * Allocate a new event structure.
-	 */
-	event = acpi_os_callocate(sizeof(BM_OSL_EVENT));
-	if (!event)
-		goto alloc_error;
-
-	event->device_type = acpi_os_callocate(strlen(device_type)
-		+ sizeof(char));
-	if (!event->device_type)
-		goto alloc_error;
-
-	event->device_instance = acpi_os_callocate(strlen(device_instance)
-		+ sizeof(char));
-	if (!event->device_instance)
-		goto alloc_error;
-
-	/*
-	 * Set event data.
-	 */
-	event->device_handle = device_handle;
-	strcpy(event->device_type, device_type);
-	strcpy(event->device_instance, device_instance);
-	event->event_type = event_type;
-	event->event_data = event_data;
-
-	/*
-	 * Add to the end of our event list.
-	 */
-	spin_lock_irqsave(&bm_osl_event_lock, flags);
-	list_add_tail(&event->list, &bm_event_list);
-	spin_unlock_irqrestore(&bm_osl_event_lock, flags);
-
-	/*
-	 * Signal waiting threads (if any).
-	 */
-	wake_up_interruptible(&bm_event_wait_queue);
-
-	return(AE_OK);
-
-alloc_error:
-	if (event->device_instance)
-		acpi_os_free(event->device_instance);
-
-	if (event->device_type)
-		acpi_os_free(event->device_type);
-
-	if (event)
-		acpi_os_free(event);		
-
-	return (AE_NO_MEMORY);
-}
-
-static int bm_osl_open_event(struct inode *inode, struct file *file)
-{
-	spin_lock_irq (&bm_osl_event_lock);
-
-	if(event_is_open)
-		goto out_busy;
-
-	event_is_open = 1;
-
-	spin_unlock_irq (&bm_osl_event_lock);
-	return 0;
-
-out_busy:
-	spin_unlock_irq (&bm_osl_event_lock);
-	return -EBUSY;
-}
-
-
-static int bm_osl_close_event(struct inode *inode, struct file *file)
-{
-	event_is_open = 0;
-	return 0;
-}
-
-/****************************************************************************
- *
- * FUNCTION:	bm_osl_read_event
- *
- * DESCRIPTION: Handles reads to the 'event' file by blocking user-mode
- *              threads until data (an event) is generated.
- *
- ****************************************************************************/
-static ssize_t
-bm_osl_read_event(
-	struct file		*file,
-	char			*buf,
-	size_t			count,
-	loff_t			*ppos)
-{
-	BM_OSL_EVENT		*event = NULL;
-	unsigned long		flags = 0;
-	static char		str[BM_MAX_STRING_LENGTH];
-	static int		chars_remaining = 0;
-	static char 		*ptr;
-
-	if (!chars_remaining) {
-		DECLARE_WAITQUEUE(wait, current);
-
-		if (list_empty(&bm_event_list)) {
-
-			if (file->f_flags & O_NONBLOCK)
-				return -EAGAIN;
-
-			set_current_state(TASK_INTERRUPTIBLE);
-			add_wait_queue(&bm_event_wait_queue, &wait);
-
-			if (list_empty(&bm_event_list)) {
-				schedule();
-			}
-
-			remove_wait_queue(&bm_event_wait_queue, &wait);
-			set_current_state(TASK_RUNNING);
-
-			if (signal_pending(current)) {
-				return -ERESTARTSYS;
-			}
-		}
-
-		spin_lock_irqsave(&bm_osl_event_lock, flags);
-		event = list_entry(bm_event_list.next, BM_OSL_EVENT, list);
-		list_del(&event->list);
-		spin_unlock_irqrestore(&bm_osl_event_lock, flags);
-
-		chars_remaining = sprintf(str, "%s %s %08x %08x\n",
-			event->device_type, event->device_instance,
-			event->event_type, event->event_data);
-		ptr = str;
-
-		acpi_os_free(event->device_type);
-		acpi_os_free(event->device_instance);
-		acpi_os_free(event);
-	}
-
-	if (chars_remaining < count)
-		count = chars_remaining;
-	
-	if (copy_to_user(buf, ptr, count))
-		return -EFAULT;
-
-	*ppos += count;
-	chars_remaining -= count;
-	ptr += count;
-
-	return count;
-}
-
-/****************************************************************************
- *
- * FUNCTION:	bm_osl_poll_event
- *
- * DESCRIPTION: Handles poll() of the 'event' file by blocking user-mode 
- *              threads until data (an event) is generated.
- *
- ****************************************************************************/
-static unsigned int
-bm_osl_poll_event(
-	struct file		*file, 
-	poll_table		*wait)
-{
-	poll_wait(file, &bm_event_wait_queue, wait);
-	if (!list_empty(&bm_event_list))
-		return POLLIN | POLLRDNORM;
-	return 0;
-}
-
-struct file_operations proc_event_operations = {
-	open:		bm_osl_open_event,
-	read:		bm_osl_read_event,
-	release:	bm_osl_close_event,
-	poll:		bm_osl_poll_event,	
-};
-
-/****************************************************************************
- *
- * FUNCTION:    bm_osl_init
- *
- ****************************************************************************/
-
-int
-bm_osl_init(void)
-{
-	acpi_status		status = AE_OK;
-
-	status = acpi_subsystem_status();
-	if (ACPI_FAILURE(status))
-		return -ENODEV;
-
-	bm_proc_root = proc_mkdir(BM_PROC_ROOT, NULL);
-	if (!bm_proc_root) {
-		return(AE_ERROR);
-	}
-
-	bm_proc_event = create_proc_entry(BM_PROC_EVENT, S_IRUSR, bm_proc_root);
-	if (bm_proc_event) {
-		bm_proc_event->proc_fops = &proc_event_operations;
-	}
-
-	status = bm_initialize();
-
-	return (ACPI_SUCCESS(status)) ? 0 : -ENODEV;
-}
-
-
-/****************************************************************************
- *
- * FUNCTION:    bm_osl_cleanup
- *
- ****************************************************************************/
-
-void
-bm_osl_cleanup(void)
-{
-	bm_terminate();
-
-	if (bm_proc_event) {
-		remove_proc_entry(BM_PROC_EVENT, bm_proc_root);
-		bm_proc_event = NULL;
-	}
-
-	if (bm_proc_root) {
-		remove_proc_entry(BM_PROC_ROOT, NULL);
-		bm_proc_root = NULL;
-	}
-
-	return;
-}
-
-
-module_init(bm_osl_init);
-module_exit(bm_osl_cleanup);
-
-
-/****************************************************************************
- *                                  Symbols
- ****************************************************************************/
-
-/* bm.c */
-
-EXPORT_SYMBOL(bm_get_node);
-
-/* bmdriver.c */
-
-EXPORT_SYMBOL(bm_get_device_power_state);
-EXPORT_SYMBOL(bm_set_device_power_state);
-EXPORT_SYMBOL(bm_get_device_info);
-EXPORT_SYMBOL(bm_get_device_status);
-EXPORT_SYMBOL(bm_get_device_context);
-EXPORT_SYMBOL(bm_register_driver);
-EXPORT_SYMBOL(bm_unregister_driver);
-
-/* bmsearch.c */
-
-EXPORT_SYMBOL(bm_search);
-
-/* bmrequest.c */
-
-EXPORT_SYMBOL(bm_request);
-
-/* bmutils.c */
-
-EXPORT_SYMBOL(bm_extract_package_data);
-EXPORT_SYMBOL(bm_evaluate_object);
-EXPORT_SYMBOL(bm_evaluate_simple_integer);
-EXPORT_SYMBOL(bm_evaluate_reference_list);
-EXPORT_SYMBOL(bm_copy_to_buffer);
-EXPORT_SYMBOL(bm_cast_buffer);
-
-/* bm_proc.c */
-
-EXPORT_SYMBOL(bm_osl_generate_event);
-EXPORT_SYMBOL(bm_proc_root);