drivers/char/mwave/mwavedd.c - kernel/msm-4.9 - Gitiles

 /*
 *
 * 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/module.h>
 #include <linux/kernel.h>
 #include <linux/fs.h>
 #include <linux/init.h>
 #include <linux/major.h>
 #include <linux/miscdevice.h>
 #include <linux/device.h>
 #include <linux/serial.h>
 #include <linux/sched.h>
 #include <linux/spinlock.h>
 #include <linux/mutex.h>
 #include <linux/delay.h>
 #include <linux/serial_8250.h>
 #include "smapi.h"
 #include "mwavedd.h"
 #include "3780i.h"
 #include "tp3780i.h"

 MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");
 MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");
 MODULE_LICENSE("GPL");

 /*
 * 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
 */
 static DEFINE_MUTEX(mwave_mutex);
 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_param(mwave_debug, int, 0);
 module_param(mwave_3780i_irq, int, 0);
 module_param(mwave_3780i_io, int, 0);
 module_param(mwave_uart_irq, int, 0);
 module_param(mwave_uart_io, int, 0);

 static int mwave_open(struct inode *inode, struct file *file);
 static int mwave_close(struct inode *inode, struct file *file);
 static long mwave_ioctl(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 %p file %p\n",
 		 inode, file);
 	PRINTK_2(TRACE_MWAVE,
 		"mwavedd::mwave_open, exit return retval %x\n", retval);

 	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 %p file %p\n",
 		 inode,  file);

 	PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
 		retval);

 	return retval;
 }

 static long mwave_ioctl(struct file *file, unsigned int iocmd,
 							unsigned long ioarg)
 {
 	unsigned int retval = 0;
 	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 	void __user *arg = (void __user *)ioarg;

 	PRINTK_4(TRACE_MWAVE,
 		"mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n",
 		file, iocmd, (int) ioarg);

 	switch (iocmd) {

 		case IOCTL_MW_RESET:
 			PRINTK_1(TRACE_MWAVE,
 				"mwavedd::mwave_ioctl, IOCTL_MW_RESET"
 				" calling tp3780I_ResetDSP\n");
 			mutex_lock(&mwave_mutex);
 			retval = tp3780I_ResetDSP(&pDrvData->rBDData);
 			mutex_unlock(&mwave_mutex);
 			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");
 			mutex_lock(&mwave_mutex);
 			retval = tp3780I_StartDSP(&pDrvData->rBDData);
 			mutex_unlock(&mwave_mutex);
 			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");
 			mutex_lock(&mwave_mutex);
 			retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
 					&rAbilities);
 			mutex_unlock(&mwave_mutex);
 			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(arg, &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 __user *pusBuffer = NULL;

 			if( copy_from_user(&rReadData, arg,
 						sizeof(MW_READWRITE)) )
 				return -EFAULT;
 			pusBuffer = (unsigned short __user *) (rReadData.pBuf);

 			PRINTK_4(TRACE_MWAVE,
 				"mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"
 				" size %lx, ioarg %lx pusBuffer %p\n",
 				rReadData.ulDataLength, ioarg, pusBuffer);
 			mutex_lock(&mwave_mutex);
 			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 					iocmd,
 					pusBuffer,
 					rReadData.ulDataLength,
 					rReadData.usDspAddress);
 			mutex_unlock(&mwave_mutex);
 		}
 			break;

 		case IOCTL_MW_READ_INST: {
 			MW_READWRITE rReadData;
 			unsigned short __user *pusBuffer = NULL;

 			if( copy_from_user(&rReadData, arg,
 						sizeof(MW_READWRITE)) )
 				return -EFAULT;
 			pusBuffer = (unsigned short __user *) (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);
 			mutex_lock(&mwave_mutex);
 			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 				iocmd, pusBuffer,
 				rReadData.ulDataLength / 2,
 				rReadData.usDspAddress);
 			mutex_unlock(&mwave_mutex);
 		}
 			break;

 		case IOCTL_MW_WRITE_DATA: {
 			MW_READWRITE rWriteData;
 			unsigned short __user *pusBuffer = NULL;

 			if( copy_from_user(&rWriteData, arg,
 						sizeof(MW_READWRITE)) )
 				return -EFAULT;
 			pusBuffer = (unsigned short __user *) (rWriteData.pBuf);

 			PRINTK_4(TRACE_MWAVE,
 				"mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA,"
 				" size %lx, ioarg %lx pusBuffer %p\n",
 				rWriteData.ulDataLength, ioarg,
 				pusBuffer);
 			mutex_lock(&mwave_mutex);
 			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 					iocmd, pusBuffer,
 					rWriteData.ulDataLength,
 					rWriteData.usDspAddress);
 			mutex_unlock(&mwave_mutex);
 		}
 			break;

 		case IOCTL_MW_WRITE_INST: {
 			MW_READWRITE rWriteData;
 			unsigned short __user *pusBuffer = NULL;

 			if( copy_from_user(&rWriteData, arg,
 						sizeof(MW_READWRITE)) )
 				return -EFAULT;
 			pusBuffer = (unsigned short __user *)(rWriteData.pBuf);

 			PRINTK_4(TRACE_MWAVE,
 				"mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST,"
 				" size %lx, ioarg %lx pusBuffer %p\n",
 				rWriteData.ulDataLength, ioarg,
 				pusBuffer);
 			mutex_lock(&mwave_mutex);
 			retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
 					iocmd, pusBuffer,
 					rWriteData.ulDataLength,
 					rWriteData.usDspAddress);
 			mutex_unlock(&mwave_mutex);
 		}
 			break;

 		case IOCTL_MW_REGISTER_IPC: {
 			unsigned int ipcnum = (unsigned int) ioarg;

 			if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 				PRINTK_ERROR(KERN_ERR_MWAVE
 						"mwavedd::mwave_ioctl:"
 						" IOCTL_MW_REGISTER_IPC:"
 						" Error: Invalid ipcnum %x\n",
 						ipcnum);
 				return -EINVAL;
 			}
 			PRINTK_3(TRACE_MWAVE,
 				"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
 				" ipcnum %x entry usIntCount %x\n",
 				ipcnum,
 				pDrvData->IPCs[ipcnum].usIntCount);

 			mutex_lock(&mwave_mutex);
 			pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 			pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
 			mutex_unlock(&mwave_mutex);

 			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;

 			if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 				PRINTK_ERROR(KERN_ERR_MWAVE
 						"mwavedd::mwave_ioctl:"
 						" IOCTL_MW_GET_IPC: Error:"
 						" Invalid ipcnum %x\n", ipcnum);
 				return -EINVAL;
 			}
 			PRINTK_3(TRACE_MWAVE,
 				"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
 				" ipcnum %x, usIntCount %x\n",
 				ipcnum,
 				pDrvData->IPCs[ipcnum].usIntCount);

 			mutex_lock(&mwave_mutex);
 			if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
 				DECLARE_WAITQUEUE(wait, current);

 				PRINTK_2(TRACE_MWAVE,
 					"mwavedd::mwave_ioctl, thread for"
 					" ipc %x going to sleep\n",
 					ipcnum);
 				add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
 				pDrvData->IPCs[ipcnum].bIsHere = TRUE;
 				set_current_state(TASK_INTERRUPTIBLE);
 				/* 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 */
 					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 */
 					schedule();
 					if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
 						pDrvData->IPCs[ipcnum].usIntCount = 2;
 					}
 					PRINTK_2(TRACE_MWAVE,
 						"mwavedd::mwave_ioctl"
 						" IOCTL_MW_GET_IPC ipcnum %x"
 						" woke up and returning to"
 						" application\n",
 						ipcnum);
 				}
 				pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 				remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
 				set_current_state(TASK_RUNNING);
 				PRINTK_2(TRACE_MWAVE,
 					"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC,"
 					" returning thread for ipc %x"
 					" processing\n",
 					ipcnum);
 			}
 			mutex_unlock(&mwave_mutex);
 		}
 			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 >= ARRAY_SIZE(pDrvData->IPCs)) {
 				PRINTK_ERROR(KERN_ERR_MWAVE
 						"mwavedd::mwave_ioctl:"
 						" IOCTL_MW_UNREGISTER_IPC:"
 						" Error: Invalid ipcnum %x\n",
 						ipcnum);
 				return -EINVAL;
 			}
 			mutex_lock(&mwave_mutex);
 			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);
 				}
 			}
 			mutex_unlock(&mwave_mutex);
 		}
 			break;

 		default:
 			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 __user *buf, size_t count,
                           loff_t * ppos)
 {
 	PRINTK_5(TRACE_MWAVE,
 		"mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n",
 		file, buf, count, ppos);

 	return -EINVAL;
 }


 static ssize_t mwave_write(struct file *file, const char __user *buf,
                            size_t count, loff_t * ppos)
 {
 	PRINTK_5(TRACE_MWAVE,
 		"mwavedd::mwave_write entry file %p, buf %p,"
 		" count %zx ppos %p\n",
 		file, buf, count, ppos);

 	return -EINVAL;
 }


 static int register_serial_portandirq(unsigned int port, int irq)
 {
 	struct uart_8250_port uart;

 	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(&uart, 0, sizeof(uart));

 	uart.port.uartclk =  1843200;
 	uart.port.iobase = port;
 	uart.port.irq = irq;
 	uart.port.iotype = UPIO_PORT;
 	uart.port.flags =  UPF_SHARE_IRQ;
 	return serial8250_register_8250_port(&uart);
 }


 static const struct file_operations mwave_fops = {
 	.owner		= THIS_MODULE,
 	.read		= mwave_read,
 	.write		= mwave_write,
 	.unlocked_ioctl	= mwave_ioctl,
 	.open		= mwave_open,
 	.release	= mwave_close,
 	.llseek		= default_llseek,
 };


 static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };

 #if 0 /* totally b0rked */
 /*
  * sysfs support <paulsch@us.ibm.com>
  */

 struct device mwave_device;

 /* Prevent code redundancy, create a macro for mwave_show_* functions. */
 #define mwave_show_function(attr_name, format_string, field)		\
 static ssize_t mwave_show_##attr_name(struct device *dev, struct device_attribute *attr, char *buf)	\
 {									\
 	DSP_3780I_CONFIG_SETTINGS *pSettings =				\
 		&mwave_s_mdd.rBDData.rDspSettings;			\
         return sprintf(buf, format_string, pSettings->field);		\
 }

 /* All of our attributes are read attributes. */
 #define mwave_dev_rd_attr(attr_name, format_string, field)		\
 	mwave_show_function(attr_name, format_string, field)		\
 static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)

 mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);
 mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);
 mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);
 mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);
 mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);

 static struct device_attribute * const mwave_dev_attrs[] = {
 	&dev_attr_3780i_dma,
 	&dev_attr_3780i_irq,
 	&dev_attr_3780i_io,
 	&dev_attr_uart_irq,
 	&dev_attr_uart_io,
 };
 #endif

 /*
 * 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 mwave_exit(void)
 {
 	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;

 	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");

 #if 0
 	for (i = 0; i < pDrvData->nr_registered_attrs; i++)
 		device_remove_file(&mwave_device, mwave_dev_attrs[i]);
 	pDrvData->nr_registered_attrs = 0;

 	if (pDrvData->device_registered) {
 		device_unregister(&mwave_device);
 		pDrvData->device_registered = FALSE;
 	}
 #endif

 	if ( pDrvData->sLine >= 0 ) {
 		serial8250_unregister_port(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;
 	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;

 	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");

 	memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));

 	pDrvData->bBDInitialized = FALSE;
 	pDrvData->bResourcesClaimed = FALSE;
 	pDrvData->bDSPEnabled = FALSE;
 	pDrvData->bDSPReset = FALSE;
 	pDrvData->bMwaveDevRegistered = FALSE;
 	pDrvData->sLine = -1;

 	for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
 		pDrvData->IPCs[i].bIsEnabled = FALSE;
 		pDrvData->IPCs[i].bIsHere = FALSE;
 		pDrvData->IPCs[i].usIntCount = 0;	/* no ints received yet */
 		init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
 	}

 	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;

 	if (misc_register(&mwave_misc_dev) < 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 0
 	/* sysfs */
 	memset(&mwave_device, 0, sizeof (struct device));
 	dev_set_name(&mwave_device, "mwave");

 	if (device_register(&mwave_device))
 		goto cleanup_error;
 	pDrvData->device_registered = TRUE;
 	for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
 		if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
 			PRINTK_ERROR(KERN_ERR_MWAVE
 					"mwavedd:mwave_init: Error:"
 					" Failed to create sysfs file %s\n",
 					mwave_dev_attrs[i]->attr.name);
 			goto cleanup_error;
 		}
 		pDrvData->nr_registered_attrs++;
 	}
 #endif

 	/* 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);
	/*
	*
	* 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/module.h>
	#include <linux/kernel.h>
	#include <linux/fs.h>
	#include <linux/init.h>
	#include <linux/major.h>
	#include <linux/miscdevice.h>
	#include <linux/device.h>
	#include <linux/serial.h>
	#include <linux/sched.h>
	#include <linux/spinlock.h>
	#include <linux/mutex.h>
	#include <linux/delay.h>
	#include <linux/serial_8250.h>
	#include "smapi.h"
	#include "mwavedd.h"
	#include "3780i.h"
	#include "tp3780i.h"

	MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");
	MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");
	MODULE_LICENSE("GPL");

	/*
	* 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
	*/
	static DEFINE_MUTEX(mwave_mutex);
	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_param(mwave_debug, int, 0);
	module_param(mwave_3780i_irq, int, 0);
	module_param(mwave_3780i_io, int, 0);
	module_param(mwave_uart_irq, int, 0);
	module_param(mwave_uart_io, int, 0);

	static int mwave_open(struct inode inode, struct file file);
	static int mwave_close(struct inode inode, struct file file);
	static long mwave_ioctl(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 %p file %p\n",
	inode, file);
	PRINTK_2(TRACE_MWAVE,
	"mwavedd::mwave_open, exit return retval %x\n", retval);

	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 %p file %p\n",
	inode, file);

	PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
	retval);

	return retval;
	}

	static long mwave_ioctl(struct file *file, unsigned int iocmd,
	unsigned long ioarg)
	{
	unsigned int retval = 0;
	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
	void __user arg = (void __user )ioarg;

	PRINTK_4(TRACE_MWAVE,
	"mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n",
	file, iocmd, (int) ioarg);

	switch (iocmd) {

	case IOCTL_MW_RESET:
	PRINTK_1(TRACE_MWAVE,
	"mwavedd::mwave_ioctl, IOCTL_MW_RESET"
	" calling tp3780I_ResetDSP\n");
	mutex_lock(&mwave_mutex);
	retval = tp3780I_ResetDSP(&pDrvData->rBDData);
	mutex_unlock(&mwave_mutex);
	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");
	mutex_lock(&mwave_mutex);
	retval = tp3780I_StartDSP(&pDrvData->rBDData);
	mutex_unlock(&mwave_mutex);
	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");
	mutex_lock(&mwave_mutex);
	retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
	&rAbilities);
	mutex_unlock(&mwave_mutex);
	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(arg, &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 __user *pusBuffer = NULL;

	if( copy_from_user(&rReadData, arg,
	sizeof(MW_READWRITE)) )
	return -EFAULT;
	pusBuffer = (unsigned short __user *) (rReadData.pBuf);

	PRINTK_4(TRACE_MWAVE,
	"mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"
	" size %lx, ioarg %lx pusBuffer %p\n",
	rReadData.ulDataLength, ioarg, pusBuffer);
	mutex_lock(&mwave_mutex);
	retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
	iocmd,
	pusBuffer,
	rReadData.ulDataLength,
	rReadData.usDspAddress);
	mutex_unlock(&mwave_mutex);
	}
	break;

	case IOCTL_MW_READ_INST: {
	MW_READWRITE rReadData;
	unsigned short __user *pusBuffer = NULL;

	if( copy_from_user(&rReadData, arg,
	sizeof(MW_READWRITE)) )
	return -EFAULT;
	pusBuffer = (unsigned short __user *) (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);
	mutex_lock(&mwave_mutex);
	retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
	iocmd, pusBuffer,
	rReadData.ulDataLength / 2,
	rReadData.usDspAddress);
	mutex_unlock(&mwave_mutex);
	}
	break;

	case IOCTL_MW_WRITE_DATA: {
	MW_READWRITE rWriteData;
	unsigned short __user *pusBuffer = NULL;

	if( copy_from_user(&rWriteData, arg,
	sizeof(MW_READWRITE)) )
	return -EFAULT;
	pusBuffer = (unsigned short __user *) (rWriteData.pBuf);

	PRINTK_4(TRACE_MWAVE,
	"mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA,"
	" size %lx, ioarg %lx pusBuffer %p\n",
	rWriteData.ulDataLength, ioarg,
	pusBuffer);
	mutex_lock(&mwave_mutex);
	retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
	iocmd, pusBuffer,
	rWriteData.ulDataLength,
	rWriteData.usDspAddress);
	mutex_unlock(&mwave_mutex);
	}
	break;

	case IOCTL_MW_WRITE_INST: {
	MW_READWRITE rWriteData;
	unsigned short __user *pusBuffer = NULL;

	if( copy_from_user(&rWriteData, arg,
	sizeof(MW_READWRITE)) )
	return -EFAULT;
	pusBuffer = (unsigned short __user *)(rWriteData.pBuf);

	PRINTK_4(TRACE_MWAVE,
	"mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST,"
	" size %lx, ioarg %lx pusBuffer %p\n",
	rWriteData.ulDataLength, ioarg,
	pusBuffer);
	mutex_lock(&mwave_mutex);
	retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
	iocmd, pusBuffer,
	rWriteData.ulDataLength,
	rWriteData.usDspAddress);
	mutex_unlock(&mwave_mutex);
	}
	break;

	case IOCTL_MW_REGISTER_IPC: {
	unsigned int ipcnum = (unsigned int) ioarg;

	if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
	PRINTK_ERROR(KERN_ERR_MWAVE
	"mwavedd::mwave_ioctl:"
	" IOCTL_MW_REGISTER_IPC:"
	" Error: Invalid ipcnum %x\n",
	ipcnum);
	return -EINVAL;
	}
	PRINTK_3(TRACE_MWAVE,
	"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
	" ipcnum %x entry usIntCount %x\n",
	ipcnum,
	pDrvData->IPCs[ipcnum].usIntCount);

	mutex_lock(&mwave_mutex);
	pDrvData->IPCs[ipcnum].bIsHere = FALSE;
	pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
	mutex_unlock(&mwave_mutex);

	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;

	if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
	PRINTK_ERROR(KERN_ERR_MWAVE
	"mwavedd::mwave_ioctl:"
	" IOCTL_MW_GET_IPC: Error:"
	" Invalid ipcnum %x\n", ipcnum);
	return -EINVAL;
	}
	PRINTK_3(TRACE_MWAVE,
	"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
	" ipcnum %x, usIntCount %x\n",
	ipcnum,
	pDrvData->IPCs[ipcnum].usIntCount);

	mutex_lock(&mwave_mutex);
	if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
	DECLARE_WAITQUEUE(wait, current);

	PRINTK_2(TRACE_MWAVE,
	"mwavedd::mwave_ioctl, thread for"
	" ipc %x going to sleep\n",
	ipcnum);
	add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
	pDrvData->IPCs[ipcnum].bIsHere = TRUE;
	set_current_state(TASK_INTERRUPTIBLE);
	/* 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 */
	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 */
	schedule();
	if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
	pDrvData->IPCs[ipcnum].usIntCount = 2;
	}
	PRINTK_2(TRACE_MWAVE,
	"mwavedd::mwave_ioctl"
	" IOCTL_MW_GET_IPC ipcnum %x"
	" woke up and returning to"
	" application\n",
	ipcnum);
	}
	pDrvData->IPCs[ipcnum].bIsHere = FALSE;
	remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
	set_current_state(TASK_RUNNING);
	PRINTK_2(TRACE_MWAVE,
	"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC,"
	" returning thread for ipc %x"
	" processing\n",
	ipcnum);
	}
	mutex_unlock(&mwave_mutex);
	}
	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 >= ARRAY_SIZE(pDrvData->IPCs)) {
	PRINTK_ERROR(KERN_ERR_MWAVE
	"mwavedd::mwave_ioctl:"
	" IOCTL_MW_UNREGISTER_IPC:"
	" Error: Invalid ipcnum %x\n",
	ipcnum);
	return -EINVAL;
	}
	mutex_lock(&mwave_mutex);
	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);
	}
	}
	mutex_unlock(&mwave_mutex);
	}
	break;

	default:
	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 __user buf, size_t count,
	loff_t * ppos)
	{
	PRINTK_5(TRACE_MWAVE,
	"mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n",
	file, buf, count, ppos);

	return -EINVAL;
	}


	static ssize_t mwave_write(struct file file, const char __user buf,
	size_t count, loff_t * ppos)
	{
	PRINTK_5(TRACE_MWAVE,
	"mwavedd::mwave_write entry file %p, buf %p,"
	" count %zx ppos %p\n",
	file, buf, count, ppos);

	return -EINVAL;
	}


	static int register_serial_portandirq(unsigned int port, int irq)
	{
	struct uart_8250_port uart;

	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(&uart, 0, sizeof(uart));

	uart.port.uartclk = 1843200;
	uart.port.iobase = port;
	uart.port.irq = irq;
	uart.port.iotype = UPIO_PORT;
	uart.port.flags = UPF_SHARE_IRQ;
	return serial8250_register_8250_port(&uart);
	}


	static const struct file_operations mwave_fops = {
	.owner = THIS_MODULE,
	.read = mwave_read,
	.write = mwave_write,
	.unlocked_ioctl = mwave_ioctl,
	.open = mwave_open,
	.release = mwave_close,
	.llseek = default_llseek,
	};


	static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };

	#if 0 /* totally b0rked */
	/*
	* sysfs support <paulsch@us.ibm.com>
	*/

	struct device mwave_device;

	/* Prevent code redundancy, create a macro for mwave_show_* functions. */
	#define mwave_show_function(attr_name, format_string, field) \
	static ssize_t mwave_show_##attr_name(struct device dev, struct device_attribute attr, char *buf) \
	{ \
	DSP_3780I_CONFIG_SETTINGS *pSettings = \
	&mwave_s_mdd.rBDData.rDspSettings; \
	return sprintf(buf, format_string, pSettings->field); \
	}

	/* All of our attributes are read attributes. */
	#define mwave_dev_rd_attr(attr_name, format_string, field) \
	mwave_show_function(attr_name, format_string, field) \
	static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)

	mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);
	mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);
	mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);
	mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);
	mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);

	static struct device_attribute * const mwave_dev_attrs[] = {
	&dev_attr_3780i_dma,
	&dev_attr_3780i_irq,
	&dev_attr_3780i_io,
	&dev_attr_uart_irq,
	&dev_attr_uart_io,
	};
	#endif

	/*
	* 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 mwave_exit(void)
	{
	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;

	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");

	#if 0
	for (i = 0; i < pDrvData->nr_registered_attrs; i++)
	device_remove_file(&mwave_device, mwave_dev_attrs[i]);
	pDrvData->nr_registered_attrs = 0;

	if (pDrvData->device_registered) {
	device_unregister(&mwave_device);
	pDrvData->device_registered = FALSE;
	}
	#endif

	if ( pDrvData->sLine >= 0 ) {
	serial8250_unregister_port(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;
	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;

	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");

	memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));

	pDrvData->bBDInitialized = FALSE;
	pDrvData->bResourcesClaimed = FALSE;
	pDrvData->bDSPEnabled = FALSE;
	pDrvData->bDSPReset = FALSE;
	pDrvData->bMwaveDevRegistered = FALSE;
	pDrvData->sLine = -1;

	for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
	pDrvData->IPCs[i].bIsEnabled = FALSE;
	pDrvData->IPCs[i].bIsHere = FALSE;
	pDrvData->IPCs[i].usIntCount = 0; /* no ints received yet */
	init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
	}

	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;

	if (misc_register(&mwave_misc_dev) < 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 0
	/* sysfs */
	memset(&mwave_device, 0, sizeof (struct device));
	dev_set_name(&mwave_device, "mwave");

	if (device_register(&mwave_device))
	goto cleanup_error;
	pDrvData->device_registered = TRUE;
	for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
	if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
	PRINTK_ERROR(KERN_ERR_MWAVE
	"mwavedd:mwave_init: Error:"
	" Failed to create sysfs file %s\n",
	mwave_dev_attrs[i]->attr.name);
	goto cleanup_error;
	}
	pDrvData->nr_registered_attrs++;
	}
	#endif

	/* 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);