patch-2.4.11-dontuse linux/drivers/char/mwave/mwavedd.c

• Lines: 639
• Date: Sun Sep 30 12:26:05 2001
• Orig file: v2.4.10/linux/drivers/char/mwave/mwavedd.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.10/linux/drivers/char/mwave/mwavedd.c linux/drivers/char/mwave/mwavedd.c
@@ -0,0 +1,638 @@
+/*
+*
+* mwavedd.c -- mwave device driver
+*
+*
+* Written By: Mike Sullivan IBM Corporation
+*
+* Copyright (C) 1999 IBM Corporation
+*
+* 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.
+*
+* NO WARRANTY
+* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
+* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
+* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
+* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
+* solely responsible for determining the appropriateness of using and
+* distributing the Program and assumes all risks associated with its
+* exercise of rights under this Agreement, including but not limited to
+* the risks and costs of program errors, damage to or loss of data,
+* programs or equipment, and unavailability or interruption of operations.
+*
+* DISCLAIMER OF LIABILITY
+* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
+* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
+* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
+* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
+*
+* 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
+*
+*
+* 10/23/2000 - Alpha Release
+*	First release to the public
+*/
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/major.h>
+#include <linux/miscdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/serial.h>
+#include <linux/sched.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+#include <linux/spinlock.h>
+#else
+#include <asm/spinlock.h>
+#endif
+#include <linux/delay.h>
+#include "smapi.h"
+#include "mwavedd.h"
+#include "3780i.h"
+#include "tp3780i.h"
+
+#ifndef __exit
+#define __exit
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+static int mwave_get_info(char *buf, char **start, off_t offset, int len);
+#else
+static int mwave_read_proc(char *buf, char **start, off_t offset, int xlen, int unused);
+static struct proc_dir_entry mwave_proc = {
+	0,                      /* unsigned short low_ino */
+	5,                      /* unsigned short namelen */
+	"mwave",                /* const char *name */
+	S_IFREG | S_IRUGO,      /* mode_t mode */
+	1,                      /* nlink_t nlink */
+	0,                      /* uid_t uid */
+	0,                      /* gid_t gid */
+	0,                      /* unsigned long size */
+	NULL,                   /* struct inode_operations *ops */
+	&mwave_read_proc        /* int (*get_info) (...) */
+};
+#endif
+
+/*
+* These parameters support the setting of MWave resources. Note that no
+* checks are made against other devices (ie. superio) for conflicts.
+* We'll depend on users using the tpctl utility to do that for now
+*/
+int mwave_debug = 0;
+int mwave_3780i_irq = 0;
+int mwave_3780i_io = 0;
+int mwave_uart_irq = 0;
+int mwave_uart_io = 0;
+MODULE_PARM(mwave_debug, "i");
+MODULE_PARM(mwave_3780i_irq, "i");
+MODULE_PARM(mwave_3780i_io, "i");
+MODULE_PARM(mwave_uart_irq, "i");
+MODULE_PARM(mwave_uart_io, "i");
+
+static int mwave_open(struct inode *inode, struct file *file);
+static int mwave_close(struct inode *inode, struct file *file);
+static int mwave_ioctl(struct inode *inode, struct file *filp,
+                       unsigned int iocmd, unsigned long ioarg);
+
+MWAVE_DEVICE_DATA mwave_s_mdd;
+
+static int mwave_open(struct inode *inode, struct file *file)
+{
+	unsigned int retval = 0;
+
+	PRINTK_3(TRACE_MWAVE,
+		"mwavedd::mwave_open, entry inode %x file %x\n",
+		(int) inode, (int) file);
+	PRINTK_2(TRACE_MWAVE,
+		"mwavedd::mwave_open, exit return retval %x\n", retval);
+
+	MOD_INC_USE_COUNT;
+	return retval;
+}
+
+static int mwave_close(struct inode *inode, struct file *file)
+{
+	unsigned int retval = 0;
+
+	PRINTK_3(TRACE_MWAVE,
+		"mwavedd::mwave_close, entry inode %x file %x\n",
+		(int) inode, (int) file);
+
+	PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
+		retval);
+
+	MOD_DEC_USE_COUNT;
+	return retval;
+}
+
+static int mwave_ioctl(struct inode *inode, struct file *file,
+                       unsigned int iocmd, unsigned long ioarg)
+{
+	unsigned int retval = 0;
+	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
+
+	PRINTK_5(TRACE_MWAVE,
+		"mwavedd::mwave_ioctl, entry inode %x file %x cmd %x arg %x\n",
+		(int) inode, (int) file, iocmd, (int) ioarg);
+
+	switch (iocmd) {
+
+		case IOCTL_MW_RESET:
+			PRINTK_1(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl, IOCTL_MW_RESET calling tp3780I_ResetDSP\n");
+			retval = tp3780I_ResetDSP(&pDrvData->rBDData);
+			PRINTK_2(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl, IOCTL_MW_RESET retval %x from tp3780I_ResetDSP\n",
+				retval);
+			break;
+	
+		case IOCTL_MW_RUN:
+			PRINTK_1(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl, IOCTL_MW_RUN calling tp3780I_StartDSP\n");
+			retval = tp3780I_StartDSP(&pDrvData->rBDData);
+			PRINTK_2(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl, IOCTL_MW_RUN retval %x from tp3780I_StartDSP\n",
+				retval);
+			break;
+	
+		case IOCTL_MW_DSP_ABILITIES: {
+			MW_ABILITIES rAbilities;
+	
+			PRINTK_1(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES calling tp3780I_QueryAbilities\n");
+			retval = tp3780I_QueryAbilities(&pDrvData->rBDData, &rAbilities);
+			PRINTK_2(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES retval %x from tp3780I_QueryAbilities\n",
+				retval);
+			if (retval == 0) {
+				if( copy_to_user((char *) ioarg, (char *) &rAbilities, sizeof(MW_ABILITIES)) )
+					return -EFAULT;
+			}
+			PRINTK_2(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES exit retval %x\n",
+				retval);
+		}
+			break;
+	
+		case IOCTL_MW_READ_DATA:
+		case IOCTL_MW_READCLEAR_DATA: {
+			MW_READWRITE rReadData;
+			unsigned short *pusBuffer = 0;
+	
+			if( copy_from_user((char *) &rReadData, (char *) ioarg, sizeof(MW_READWRITE)) )
+				return -EFAULT;
+			pusBuffer = (unsigned short *) (rReadData.pBuf);
+	
+			PRINTK_4(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl IOCTL_MW_READ_DATA, size %lx, ioarg %lx pusBuffer %p\n",
+				rReadData.ulDataLength, ioarg, pusBuffer);
+			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, iocmd,
+				(void *) pusBuffer, rReadData.ulDataLength, rReadData.usDspAddress);
+		}
+			break;
+	
+		case IOCTL_MW_READ_INST: {
+			MW_READWRITE rReadData;
+			unsigned short *pusBuffer = 0;
+	
+			if( copy_from_user((char *) &rReadData, (char *) ioarg, sizeof(MW_READWRITE)) )
+				return -EFAULT;
+			pusBuffer = (unsigned short *) (rReadData.pBuf);
+	
+			PRINTK_4(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl IOCTL_MW_READ_INST, size %lx, ioarg %lx pusBuffer %p\n",
+				rReadData.ulDataLength / 2, ioarg,
+				pusBuffer);
+			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
+				iocmd, pusBuffer,
+				rReadData.ulDataLength / 2,
+				rReadData.usDspAddress);
+		}
+			break;
+	
+		case IOCTL_MW_WRITE_DATA: {
+			MW_READWRITE rWriteData;
+			unsigned short *pusBuffer = 0;
+	
+			if( copy_from_user((char *) &rWriteData, (char *) ioarg, sizeof(MW_READWRITE)) )
+				return -EFAULT;
+			pusBuffer = (unsigned short *) (rWriteData.pBuf);
+	
+			PRINTK_4(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA, size %lx, ioarg %lx pusBuffer %p\n",
+				rWriteData.ulDataLength, ioarg,
+				pusBuffer);
+			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, iocmd,
+				pusBuffer, rWriteData.ulDataLength, rWriteData.usDspAddress);
+		}
+			break;
+	
+		case IOCTL_MW_WRITE_INST: {
+			MW_READWRITE rWriteData;
+			unsigned short *pusBuffer = 0;
+	
+			if( copy_from_user((char *) &rWriteData, (char *) ioarg, sizeof(MW_READWRITE)) )
+				return -EFAULT;
+			pusBuffer = (unsigned short *) (rWriteData.pBuf);
+	
+			PRINTK_4(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST, size %lx, ioarg %lx pusBuffer %p\n",
+				rWriteData.ulDataLength, ioarg,
+				pusBuffer);
+			retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData, iocmd,
+					pusBuffer, rWriteData.ulDataLength, rWriteData.usDspAddress);
+		}
+			break;
+	
+		case IOCTL_MW_REGISTER_IPC: {
+			unsigned int ipcnum = (unsigned int) ioarg;
+	
+			PRINTK_3(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC ipcnum %x entry usIntCount %x\n",
+				ipcnum,
+				pDrvData->IPCs[ipcnum].usIntCount);
+	
+			if (ipcnum > 16) {
+				PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: IOCTL_MW_REGISTER_IPC: Error: Invalid ipcnum %x\n", ipcnum);
+				return -EINVAL;
+			}
+			pDrvData->IPCs[ipcnum].bIsHere = FALSE;
+			pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
+	#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+			current->nice = -20;	/* boost to provide priority timing */
+	#else
+			current->priority = 0x28;	/* boost to provide priority timing */
+	#endif
+	
+			PRINTK_2(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC ipcnum %x exit\n",
+				ipcnum);
+		}
+			break;
+	
+		case IOCTL_MW_GET_IPC: {
+			unsigned int ipcnum = (unsigned int) ioarg;
+			spinlock_t ipc_lock = SPIN_LOCK_UNLOCKED;
+			unsigned long flags;
+	
+			PRINTK_3(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC ipcnum %x, usIntCount %x\n",
+				ipcnum,
+				pDrvData->IPCs[ipcnum].usIntCount);
+			if (ipcnum > 16) {
+				PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: IOCTL_MW_GET_IPC: Error: Invalid ipcnum %x\n", ipcnum);
+				return -EINVAL;
+			}
+	
+			if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
+				PRINTK_2(TRACE_MWAVE,
+					"mwavedd::mwave_ioctl, thread for ipc %x going to sleep\n",
+					ipcnum);
+	
+				spin_lock_irqsave(&ipc_lock, flags);
+				/* check whether an event was signalled by */
+				/* the interrupt handler while we were gone */
+				if (pDrvData->IPCs[ipcnum].usIntCount == 1) {	/* first int has occurred (race condition) */
+					pDrvData->IPCs[ipcnum].usIntCount = 2;	/* first int has been handled */
+					spin_unlock_irqrestore(&ipc_lock, flags);
+					PRINTK_2(TRACE_MWAVE,
+						"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC ipcnum %x handling first int\n",
+						ipcnum);
+				} else {	/* either 1st int has not yet occurred, or we have already handled the first int */
+					pDrvData->IPCs[ipcnum].bIsHere = TRUE;
+					interruptible_sleep_on(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
+					pDrvData->IPCs[ipcnum].bIsHere = FALSE;
+					if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
+						pDrvData->IPCs[ipcnum].
+						usIntCount = 2;
+					}
+					spin_unlock_irqrestore(&ipc_lock, flags);
+					PRINTK_2(TRACE_MWAVE,
+						"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC ipcnum %x woke up and returning to application\n",
+						ipcnum);
+				}
+				PRINTK_2(TRACE_MWAVE,
+					"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC, returning thread for ipc %x processing\n",
+					ipcnum);
+			}
+		}
+			break;
+	
+		case IOCTL_MW_UNREGISTER_IPC: {
+			unsigned int ipcnum = (unsigned int) ioarg;
+	
+			PRINTK_2(TRACE_MWAVE,
+				"mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC ipcnum %x\n",
+				ipcnum);
+			if (ipcnum > 16) {
+				PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: IOCTL_MW_UNREGISTER_IPC: Error: Invalid ipcnum %x\n", ipcnum);
+				return -EINVAL;
+			}
+			if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
+				pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
+				if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {
+					wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
+				}
+			}
+		}
+			break;
+	
+		default:
+			PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: Error: Unrecognized iocmd %x\n", iocmd);
+			return -ENOTTY;
+			break;
+	} /* switch */
+
+	PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);
+
+	return retval;
+}
+
+
+static ssize_t mwave_read(struct file *file, char *buf, size_t count,
+                          loff_t * ppos)
+{
+	PRINTK_5(TRACE_MWAVE,
+		"mwavedd::mwave_read entry file %p, buf %p, count %x ppos %p\n",
+		file, buf, count, ppos);
+
+	return -EINVAL;
+}
+
+
+static ssize_t mwave_write(struct file *file, const char *buf,
+                           size_t count, loff_t * ppos)
+{
+	PRINTK_5(TRACE_MWAVE,
+		"mwavedd::mwave_write entry file %p, buf %p, count %x ppos %p\n",
+		file, buf, count, ppos);
+
+	return -EINVAL;
+}
+
+
+static int register_serial_portandirq(unsigned int port, int irq)
+{
+	struct serial_struct serial;
+
+	switch ( port ) {
+		case 0x3f8:
+		case 0x2f8:
+		case 0x3e8:
+		case 0x2e8:
+			/* OK */
+			break;
+		default:
+			PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::register_serial_portandirq: Error: Illegal port %x\n", port );
+			return -1;
+	} /* switch */
+	/* port is okay */
+
+	switch ( irq ) {
+		case 3:
+		case 4:
+		case 5:
+		case 7:
+			/* OK */
+			break;
+		default:
+			PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::register_serial_portandirq: Error: Illegal irq %x\n", irq );
+			return -1;
+	} /* switch */
+	/* irq is okay */
+
+	memset(&serial, 0, sizeof(serial));
+	serial.port = port;
+	serial.irq = irq;
+	serial.flags = ASYNC_SHARE_IRQ;
+
+	return register_serial(&serial);
+}
+
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+static struct file_operations mwave_fops = {
+	owner:THIS_MODULE,
+	read:mwave_read,
+	write:mwave_write,
+	ioctl:mwave_ioctl,
+	open:mwave_open,
+	release:mwave_close
+};
+#else
+static struct file_operations mwave_fops = {
+	NULL,			/* lseek */
+	mwave_read,		/* read */
+	mwave_write,		/* write */
+	NULL,			/* readdir */
+	NULL,			/* poll */
+	mwave_ioctl,		/* ioctl */
+	NULL,			/* mmap */
+	mwave_open,		/* open */
+	NULL,			/* flush */
+	mwave_close		/* release */
+};
+#endif
+
+static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
+
+/*
+* mwave_init is called on module load
+*
+* mwave_exit is called on module unload
+* mwave_exit is also used to clean up after an aborted mwave_init
+*/
+static void __exit mwave_exit(void)
+{
+	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
+
+	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
+
+	if (pDrvData->bProcEntryCreated) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+		remove_proc_entry("mwave", NULL);
+#else
+		proc_unregister(&proc_root, mwave_proc.low_ino);
+#endif
+	}
+	if ( pDrvData->sLine >= 0 ) {
+		unregister_serial(pDrvData->sLine);
+	}
+	if (pDrvData->bMwaveDevRegistered) {
+		misc_deregister(&mwave_misc_dev);
+	}
+	if (pDrvData->bDSPEnabled) {
+		tp3780I_DisableDSP(&pDrvData->rBDData);
+	}
+	if (pDrvData->bResourcesClaimed) {
+		tp3780I_ReleaseResources(&pDrvData->rBDData);
+	}
+	if (pDrvData->bBDInitialized) {
+		tp3780I_Cleanup(&pDrvData->rBDData);
+	}
+
+	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
+}
+
+module_exit(mwave_exit);
+
+static int __init mwave_init(void)
+{
+	int i;
+	int retval = 0;
+	unsigned int resultMiscRegister;
+	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
+
+	memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
+
+	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
+
+	pDrvData->bBDInitialized = FALSE;
+	pDrvData->bResourcesClaimed = FALSE;
+	pDrvData->bDSPEnabled = FALSE;
+	pDrvData->bDSPReset = FALSE;
+	pDrvData->bMwaveDevRegistered = FALSE;
+	pDrvData->sLine = -1;
+	pDrvData->bProcEntryCreated = FALSE;
+
+	for (i = 0; i < 16; i++) {
+		pDrvData->IPCs[i].bIsEnabled = FALSE;
+		pDrvData->IPCs[i].bIsHere = FALSE;
+		pDrvData->IPCs[i].usIntCount = 0;	/* no ints received yet */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+		init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
+#endif
+	}
+
+	retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
+	PRINTK_2(TRACE_MWAVE,
+		"mwavedd::mwave_init, return from tp3780I_InitializeBoardData retval %x\n",
+		retval);
+	if (retval) {
+		PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_init: Error: Failed to initialize board data\n");
+		goto cleanup_error;
+	}
+	pDrvData->bBDInitialized = TRUE;
+
+	retval = tp3780I_CalcResources(&pDrvData->rBDData);
+	PRINTK_2(TRACE_MWAVE,
+		"mwavedd::mwave_init, return from tp3780I_CalcResources retval %x\n",
+		retval);
+	if (retval) {
+		PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to calculate resources\n");
+		goto cleanup_error;
+	}
+
+	retval = tp3780I_ClaimResources(&pDrvData->rBDData);
+	PRINTK_2(TRACE_MWAVE,
+		"mwavedd::mwave_init, return from tp3780I_ClaimResources retval %x\n",
+		retval);
+	if (retval) {
+		PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to claim resources\n");
+		goto cleanup_error;
+	}
+	pDrvData->bResourcesClaimed = TRUE;
+
+	retval = tp3780I_EnableDSP(&pDrvData->rBDData);
+	PRINTK_2(TRACE_MWAVE,
+		"mwavedd::mwave_init, return from tp3780I_EnableDSP retval %x\n",
+		retval);
+	if (retval) {
+		PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to enable DSP\n");
+		goto cleanup_error;
+	}
+	pDrvData->bDSPEnabled = TRUE;
+
+	resultMiscRegister = misc_register(&mwave_misc_dev);
+	if (resultMiscRegister < 0) {
+		PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to register misc device\n");
+		goto cleanup_error;
+	}
+	pDrvData->bMwaveDevRegistered = TRUE;
+
+	pDrvData->sLine = register_serial_portandirq(
+		pDrvData->rBDData.rDspSettings.usUartBaseIO,
+		pDrvData->rBDData.rDspSettings.usUartIrq
+	);
+	if (pDrvData->sLine < 0) {
+		PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to register serial driver\n");
+		goto cleanup_error;
+	}
+	/* uart is registered */
+
+	if (
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+		!create_proc_info_entry("mwave", 0, NULL, mwave_get_info)
+#else
+		proc_register(&proc_root, &mwave_proc)
+#endif
+	) {
+		PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_init: Error: Failed to register /proc/mwave\n");
+		goto cleanup_error;
+	}
+	pDrvData->bProcEntryCreated = TRUE;
+
+	/* SUCCESS! */
+	return 0;
+
+	cleanup_error:
+	PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_init: Error: Failed to initialize\n");
+	mwave_exit(); /* clean up */
+
+	return -EIO;
+}
+
+module_init(mwave_init);
+
+
+/*
+* proc entry stuff added by Ian Pilcher <pilcher@us.ibm.com>
+*/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
+static int mwave_get_info(char *buf, char **start, off_t offset, int len)
+{
+	DSP_3780I_CONFIG_SETTINGS *pSettings = &mwave_s_mdd.rBDData.rDspSettings;
+
+	char *out = buf;
+
+	out += sprintf(out, "3780i_IRQ %i\n", pSettings->usDspIrq);
+	out += sprintf(out, "3780i_DMA %i\n", pSettings->usDspDma);
+	out += sprintf(out, "3780i_IO  %#.4x\n", pSettings->usDspBaseIO);
+	out += sprintf(out, "UART_IRQ  %i\n", pSettings->usUartIrq);
+	out += sprintf(out, "UART_IO   %#.4x\n", pSettings->usUartBaseIO);
+
+	return out - buf;
+}
+#else /* kernel version < 2.4.0 */
+static int mwave_read_proc(char *buf, char **start, off_t offset,
+                           int xlen, int unused)
+{
+	DSP_3780I_CONFIG_SETTINGS *pSettings = &mwave_s_mdd.rBDData.rDspSettings;
+	int len;
+
+	len = sprintf(buf,        "3780i_IRQ %i\n", pSettings->usDspIrq);
+	len += sprintf(&buf[len], "3780i_DMA %i\n", pSettings->usDspDma);
+	len += sprintf(&buf[len], "3780i_IO  %#.4x\n", pSettings->usDspBaseIO);
+	len += sprintf(&buf[len], "UART_IRQ  %i\n", pSettings->usUartIrq);
+	len += sprintf(&buf[len], "UART_IO   %#.4x\n", pSettings->usUartBaseIO);
+
+	return len;
+}
+#endif