patch-2.1.132 linux/net/irda/ircomm/irvtd.c

• Lines: 154
• Date: Fri Dec 18 08:06:39 1998
• Orig file: v2.1.131/linux/net/irda/ircomm/irvtd.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.131/linux/net/irda/ircomm/irvtd.c linux/net/irda/ircomm/irvtd.c
@@ -0,0 +1,153 @@
+/*********************************************************************
+ *                
+ * Filename:      irvtd.c
+ * Version:       
+ * Description:   A virtual tty driver implementaion,
+ *                which also may be called as "Port Emulation Entity"
+ *                in IrCOMM specification.
+ * Status:        Experimental.
+ * Author:        Takahide Higuchi <thiguchi@pluto.dti.ne.jp>
+ * Source:        irlpt.c
+ *
+ *     Copyright (c) 1998, Takahide Higuchi, <thiguchi@pluto.dti.ne.jp>,
+ *     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.
+ *
+ *     I, Takahide Higuchi, provide no warranty for any of this software.
+ *     This material is provided "AS-IS" and at no charge.
+ *
+ ********************************************************************/
+
+/* #include <linux/module.h> */
+
+#include <linux/init.h>
+
+#include <net/irda/irda.h>
+#include <net/irda/irlmp.h>
+
+#include <net/irda/irvtd.h>
+#include <net/irda/irvtd_driver.h>
+
+struct irvtd_cb **irvtd = NULL;
+extern struct ircomm_cb **ircomm;
+
+#if 0
+static char *rcsid = "$Id: irvtd.c,v 1.2 1998/09/27 08:37:04 takahide Exp $";
+#endif
+static char *version = "IrVTD, $Revision: 1.2 $ $Date: 1998/09/27 08:37:04 $ (Takahide Higuchi)";
+
+
+/************************************************************
+ *    init & cleanup this module 
+ ************************************************************/
+
+/*
+ * Function init_module(void)
+ *
+ *   Initializes the ircomm control structure
+ *   This Function is called when you do insmod.
+ */
+
+__initfunc(int irvtd_init(void))
+{
+	int i;
+
+	DEBUG( 4, "irvtd:init_module:\n");
+	printk( KERN_INFO "%s\n", version);
+
+	/* we allocate master array */
+
+	irvtd = (struct irvtd_cb **) kmalloc( sizeof(void *) *
+						COMM_MAX_TTY,GFP_KERNEL);
+	if ( irvtd == NULL) {
+		printk( KERN_WARNING "irvtd: Can't allocate array!\n");
+		return -ENOMEM;
+	}
+
+	memset( irvtd, 0, sizeof(void *) * COMM_MAX_TTY);
+
+
+	/* we initialize structure */
+
+	for (i=0; i < COMM_MAX_TTY; i++){
+		irvtd[i] = kmalloc( sizeof(struct irvtd_cb), GFP_KERNEL);	
+		if(irvtd[i] == NULL){
+			printk(KERN_ERR "ircomm_open(): kmalloc failed!\n");
+			return -ENOMEM;
+		}
+
+		memset( irvtd[i], 0, sizeof(struct irvtd_cb));
+		irvtd[i]->magic = IRVTD_MAGIC;
+	}
+
+	/* 
+	 * initialize a "port emulation entity"
+	 */
+
+	if(irvtd_register_ttydriver()){
+		printk( KERN_WARNING "IrCOMM: Error in ircomm_register_device\n");
+		return -ENODEV;
+	}
+
+
+	DEBUG( 4, "irvtd:init_module:done\n");
+	return 0;
+}
+
+void irvtd_cleanup(void)
+{
+	int i;
+	DEBUG( 4, "--> ircomm:cleanup_module\n");
+
+	/*
+	 * free some resources
+	 */
+	if (irvtd) {
+		for (i=0; i<COMM_MAX_TTY; i++) {
+			if (irvtd[i]) {
+				DEBUG( 4, "freeing structures\n");
+				/* irvtd_close();  :{| */
+				kfree(irvtd[i]);
+				irvtd[i] = NULL;
+			}
+		}
+		DEBUG( 4, "freeing master array\n");
+		kfree(irvtd);
+		irvtd = NULL;
+	}
+
+
+
+	DEBUG( 0, "unregister_ttydriver..\n");
+ 	irvtd_unregister_ttydriver();
+
+	DEBUG( 4, "ircomm:cleanup_module -->\n");
+}
+
+#ifdef MODULE
+
+int init_module(void) 
+{
+	irvtd_init();
+	return 0;
+}
+
+
+/*
+ * Function ircomm_cleanup (void)
+ *   This is called when you rmmod.
+ */
+
+void cleanup_module(void)
+{
+	irvtd_cleanup();
+}
+
+#endif /* MODULE */
+
+
+