[mirror_ubuntu-hirsute-kernel.git] / drivers / char / mwave / mwavedd.c

/*
*
* 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/smp_lock.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
*/
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 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 %p file %p\n",
		 inode, file);
	PRINTK_2(TRACE_MWAVE,
		"mwavedd::mwave_open, exit return retval %x\n", retval);

	cycle_kernel_lock();
	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 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;
	void __user *arg = (void __user *)ioarg;

	PRINTK_5(TRACE_MWAVE,
		"mwavedd::mwave_ioctl, entry inode %p file %p cmd %x arg %x\n",
		 inode,  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(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);
			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
					iocmd,
					pusBuffer,
					rReadData.ulDataLength,
					rReadData.usDspAddress);
		}
			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);
			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
				iocmd, pusBuffer,
				rReadData.ulDataLength / 2,
				rReadData.usDspAddress);
		}
			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);
			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
					iocmd, pusBuffer,
					rWriteData.ulDataLength,
					rWriteData.usDspAddress);
		}
			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);
			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 >= ARRAY_SIZE(pDrvData->IPCs)) {
				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;
	
			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;
	
			PRINTK_3(TRACE_MWAVE,
				"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
				" ipcnum %x, usIntCount %x\n",
				ipcnum,
				pDrvData->IPCs[ipcnum].usIntCount);
			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;
			}
	
			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);
			}
		}
			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;
			}
			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 __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_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(struct uart_port));
	
	uart.uartclk =  1843200;
	uart.iobase = port;
	uart.irq = irq;
	uart.iotype = UPIO_PORT;
	uart.flags =  UPF_SHARE_IRQ;
	return serial8250_register_port(&uart);
}


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


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));
	snprintf(mwave_device.bus_id, BUS_ID_SIZE, "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);
Commit	Line	Data
1da177e4 LT	1	/*
	2	*
	3	* mwavedd.c -- mwave device driver
	4	*
	5	*
	6	* Written By: Mike Sullivan IBM Corporation
	7	*
	8	* Copyright (C) 1999 IBM Corporation
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or
	13	* (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* NO WARRANTY
	21	* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
	22	* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
	23	* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
	24	* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
	25	* solely responsible for determining the appropriateness of using and
	26	* distributing the Program and assumes all risks associated with its
	27	* exercise of rights under this Agreement, including but not limited to
	28	* the risks and costs of program errors, damage to or loss of data,
	29	* programs or equipment, and unavailability or interruption of operations.
	30	*
	31	* DISCLAIMER OF LIABILITY
	32	* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
	33	* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	34	* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
	35	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
	36	* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
	37	* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
	38	* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
	39	*
	40	* You should have received a copy of the GNU General Public License
	41	* along with this program; if not, write to the Free Software
	42	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	43	*
	44	*
	45	* 10/23/2000 - Alpha Release
	46	* First release to the public
	47	*/
	48
	49	#include <linux/module.h>
	50	#include <linux/kernel.h>
	51	#include <linux/fs.h>
	52	#include <linux/init.h>
	53	#include <linux/major.h>
	54	#include <linux/miscdevice.h>
	55	#include <linux/device.h>
	56	#include <linux/serial.h>
	57	#include <linux/sched.h>
	58	#include <linux/spinlock.h>
db41bc9c	59	#include <linux/smp_lock.h>
1da177e4	60	#include <linux/delay.h>
5981d644	61	#include <linux/serial_8250.h>
1da177e4 LT	62	#include "smapi.h"
	63	#include "mwavedd.h"
	64	#include "3780i.h"
	65	#include "tp3780i.h"
	66
	67	MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");
	68	MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");
	69	MODULE_LICENSE("GPL");
	70
	71	/*
	72	* These parameters support the setting of MWave resources. Note that no
	73	* checks are made against other devices (ie. superio) for conflicts.
	74	* We'll depend on users using the tpctl utility to do that for now
	75	*/
	76	int mwave_debug = 0;
	77	int mwave_3780i_irq = 0;
	78	int mwave_3780i_io = 0;
	79	int mwave_uart_irq = 0;
	80	int mwave_uart_io = 0;
	81	module_param(mwave_debug, int, 0);
	82	module_param(mwave_3780i_irq, int, 0);
	83	module_param(mwave_3780i_io, int, 0);
	84	module_param(mwave_uart_irq, int, 0);
	85	module_param(mwave_uart_io, int, 0);
	86
	87	static int mwave_open(struct inode inode, struct file file);
	88	static int mwave_close(struct inode inode, struct file file);
	89	static int mwave_ioctl(struct inode inode, struct file filp,
	90	unsigned int iocmd, unsigned long ioarg);
	91
	92	MWAVE_DEVICE_DATA mwave_s_mdd;
	93
	94	static int mwave_open(struct inode inode, struct file file)
	95	{
	96	unsigned int retval = 0;
	97
	98	PRINTK_3(TRACE_MWAVE,
	99	"mwavedd::mwave_open, entry inode %p file %p\n",
	100	inode, file);
	101	PRINTK_2(TRACE_MWAVE,
	102	"mwavedd::mwave_open, exit return retval %x\n", retval);
	103
db41bc9c	104	cycle_kernel_lock();
1da177e4 LT	105	return retval;
	106	}
	107
	108	static int mwave_close(struct inode inode, struct file file)
	109	{
	110	unsigned int retval = 0;
	111
	112	PRINTK_3(TRACE_MWAVE,
	113	"mwavedd::mwave_close, entry inode %p file %p\n",
	114	inode, file);
	115
	116	PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
	117	retval);
	118
	119	return retval;
	120	}
	121
	122	static int mwave_ioctl(struct inode inode, struct file file,
	123	unsigned int iocmd, unsigned long ioarg)
	124	{
	125	unsigned int retval = 0;
	126	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
	127	void __user arg = (void __user )ioarg;
	128
	129	PRINTK_5(TRACE_MWAVE,
	130	"mwavedd::mwave_ioctl, entry inode %p file %p cmd %x arg %x\n",
	131	inode, file, iocmd, (int) ioarg);
	132
	133	switch (iocmd) {
	134
	135	case IOCTL_MW_RESET:
	136	PRINTK_1(TRACE_MWAVE,
	137	"mwavedd::mwave_ioctl, IOCTL_MW_RESET"
	138	" calling tp3780I_ResetDSP\n");
	139	retval = tp3780I_ResetDSP(&pDrvData->rBDData);
	140	PRINTK_2(TRACE_MWAVE,
	141	"mwavedd::mwave_ioctl, IOCTL_MW_RESET"
	142	" retval %x from tp3780I_ResetDSP\n",
	143	retval);
	144	break;
	145
	146	case IOCTL_MW_RUN:
	147	PRINTK_1(TRACE_MWAVE,
	148	"mwavedd::mwave_ioctl, IOCTL_MW_RUN"
	149	" calling tp3780I_StartDSP\n");
	150	retval = tp3780I_StartDSP(&pDrvData->rBDData);
	151	PRINTK_2(TRACE_MWAVE,
	152	"mwavedd::mwave_ioctl, IOCTL_MW_RUN"
	153	" retval %x from tp3780I_StartDSP\n",
	154	retval);
	155	break;
	156
	157	case IOCTL_MW_DSP_ABILITIES: {
	158	MW_ABILITIES rAbilities;
	159
	160	PRINTK_1(TRACE_MWAVE,
	161	"mwavedd::mwave_ioctl,"
	162	" IOCTL_MW_DSP_ABILITIES calling"
	163	" tp3780I_QueryAbilities\n");
	164	retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
	165	&rAbilities);
	166	PRINTK_2(TRACE_MWAVE,
	167	"mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
	168	" retval %x from tp3780I_QueryAbilities\n",
169	retval);
170	if (retval == 0) {
171	if( copy_to_user(arg, &rAbilities,
172	sizeof(MW_ABILITIES)) )
173	return -EFAULT;
174	}
175	PRINTK_2(TRACE_MWAVE,
176	"mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
177	" exit retval %x\n",
178	retval);
179	}
180	break;
181
182	case IOCTL_MW_READ_DATA:
183	case IOCTL_MW_READCLEAR_DATA: {
184	MW_READWRITE rReadData;
185	unsigned short __user *pusBuffer = NULL;
186
187	if( copy_from_user(&rReadData, arg,
188	sizeof(MW_READWRITE)) )
189	return -EFAULT;
190	pusBuffer = (unsigned short __user *) (rReadData.pBuf);
191
192	PRINTK_4(TRACE_MWAVE,
193	"mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"
194	" size %lx, ioarg %lx pusBuffer %p\n",
195	rReadData.ulDataLength, ioarg, pusBuffer);
196	retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
197	iocmd,
198	pusBuffer,
199	rReadData.ulDataLength,
200	rReadData.usDspAddress);
201	}
202	break;
203
204	case IOCTL_MW_READ_INST: {
205	MW_READWRITE rReadData;
206	unsigned short __user *pusBuffer = NULL;
207
208	if( copy_from_user(&rReadData, arg,
209	sizeof(MW_READWRITE)) )
210	return -EFAULT;
211	pusBuffer = (unsigned short __user *) (rReadData.pBuf);
212
213	PRINTK_4(TRACE_MWAVE,
214	"mwavedd::mwave_ioctl IOCTL_MW_READ_INST,"
215	" size %lx, ioarg %lx pusBuffer %p\n",
216	rReadData.ulDataLength / 2, ioarg,
217	pusBuffer);
218	retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
219	iocmd, pusBuffer,
220	rReadData.ulDataLength / 2,
221	rReadData.usDspAddress);
222	}
223	break;
224
225	case IOCTL_MW_WRITE_DATA: {
226	MW_READWRITE rWriteData;
227	unsigned short __user *pusBuffer = NULL;
228
229	if( copy_from_user(&rWriteData, arg,
230	sizeof(MW_READWRITE)) )
231	return -EFAULT;
232	pusBuffer = (unsigned short __user *) (rWriteData.pBuf);
233
234	PRINTK_4(TRACE_MWAVE,
235	"mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA,"
236	" size %lx, ioarg %lx pusBuffer %p\n",
237	rWriteData.ulDataLength, ioarg,
238	pusBuffer);
239	retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
240	iocmd, pusBuffer,
241	rWriteData.ulDataLength,
242	rWriteData.usDspAddress);
243	}
244	break;
245
246	case IOCTL_MW_WRITE_INST: {
247	MW_READWRITE rWriteData;
248	unsigned short __user *pusBuffer = NULL;
249
250	if( copy_from_user(&rWriteData, arg,
251	sizeof(MW_READWRITE)) )
252	return -EFAULT;
253	pusBuffer = (unsigned short __user *)(rWriteData.pBuf);
254
255	PRINTK_4(TRACE_MWAVE,
256	"mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST,"
257	" size %lx, ioarg %lx pusBuffer %p\n",
258	rWriteData.ulDataLength, ioarg,
259	pusBuffer);
260	retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
261	iocmd, pusBuffer,
262	rWriteData.ulDataLength,
263	rWriteData.usDspAddress);
264	}
265	break;
266
267	case IOCTL_MW_REGISTER_IPC: {
268	unsigned int ipcnum = (unsigned int) ioarg;
269
270	PRINTK_3(TRACE_MWAVE,
271	"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
272	" ipcnum %x entry usIntCount %x\n",
273	ipcnum,
274	pDrvData->IPCs[ipcnum].usIntCount);
275
d698f1c7	276	if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
1da177e4 LT	277	PRINTK_ERROR(KERN_ERR_MWAVE
	278	"mwavedd::mwave_ioctl:"
	279	" IOCTL_MW_REGISTER_IPC:"
	280	" Error: Invalid ipcnum %x\n",
	281	ipcnum);
	282	return -EINVAL;
	283	}
	284	pDrvData->IPCs[ipcnum].bIsHere = FALSE;
	285	pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
	286
	287	PRINTK_2(TRACE_MWAVE,
	288	"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
	289	" ipcnum %x exit\n",
	290	ipcnum);
	291	}
	292	break;
	293
	294	case IOCTL_MW_GET_IPC: {
	295	unsigned int ipcnum = (unsigned int) ioarg;
	296
	297	PRINTK_3(TRACE_MWAVE,
	298	"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
	299	" ipcnum %x, usIntCount %x\n",
	300	ipcnum,
	301	pDrvData->IPCs[ipcnum].usIntCount);
095d030c	302	if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
1da177e4 LT	303	PRINTK_ERROR(KERN_ERR_MWAVE
	304	"mwavedd::mwave_ioctl:"
	305	" IOCTL_MW_GET_IPC: Error:"
	306	" Invalid ipcnum %x\n", ipcnum);
	307	return -EINVAL;
	308	}
	309
	310	if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
	311	DECLARE_WAITQUEUE(wait, current);
	312
	313	PRINTK_2(TRACE_MWAVE,
	314	"mwavedd::mwave_ioctl, thread for"
	315	" ipc %x going to sleep\n",
	316	ipcnum);
	317	add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
	318	pDrvData->IPCs[ipcnum].bIsHere = TRUE;
	319	set_current_state(TASK_INTERRUPTIBLE);
	320	/* check whether an event was signalled by */
	321	/* the interrupt handler while we were gone */
	322	if (pDrvData->IPCs[ipcnum].usIntCount == 1) { /* first int has occurred (race condition) */
	323	pDrvData->IPCs[ipcnum].usIntCount = 2; /* first int has been handled */
	324	PRINTK_2(TRACE_MWAVE,
	325	"mwavedd::mwave_ioctl"
	326	" IOCTL_MW_GET_IPC ipcnum %x"
	327	" handling first int\n",
	328	ipcnum);
	329	} else { /* either 1st int has not yet occurred, or we have already handled the first int */
	330	schedule();
	331	if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
	332	pDrvData->IPCs[ipcnum].usIntCount = 2;
	333	}
	334	PRINTK_2(TRACE_MWAVE,
	335	"mwavedd::mwave_ioctl"
	336	" IOCTL_MW_GET_IPC ipcnum %x"
	337	" woke up and returning to"
	338	" application\n",
	339	ipcnum);
	340	}
	341	pDrvData->IPCs[ipcnum].bIsHere = FALSE;
	342	remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
	343	set_current_state(TASK_RUNNING);
	344	PRINTK_2(TRACE_MWAVE,
	345	"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC,"
	346	" returning thread for ipc %x"
	347	" processing\n",
	348	ipcnum);
	349	}
	350	}
	351	break;
	352
	353	case IOCTL_MW_UNREGISTER_IPC: {
	354	unsigned int ipcnum = (unsigned int) ioarg;
	355
	356	PRINTK_2(TRACE_MWAVE,
	357	"mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC"
	358	" ipcnum %x\n",
	359	ipcnum);
095d030c	360	if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
1da177e4 LT	361	PRINTK_ERROR(KERN_ERR_MWAVE
	362	"mwavedd::mwave_ioctl:"
	363	" IOCTL_MW_UNREGISTER_IPC:"
	364	" Error: Invalid ipcnum %x\n",
	365	ipcnum);
	366	return -EINVAL;
	367	}
	368	if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
	369	pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
	370	if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {
	371	wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
	372	}
	373	}
	374	}
	375	break;
	376
	377	default:
	378	PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl:"
	379	" Error: Unrecognized iocmd %x\n",
	380	iocmd);
	381	return -ENOTTY;
	382	break;
	383	} /* switch */
	384
	385	PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);
	386
	387	return retval;
	388	}
	389
	390
	391	static ssize_t mwave_read(struct file file, char __user buf, size_t count,
	392	loff_t * ppos)
	393	{
	394	PRINTK_5(TRACE_MWAVE,
	395	"mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n",
	396	file, buf, count, ppos);
	397
	398	return -EINVAL;
	399	}
	400
	401
	402	static ssize_t mwave_write(struct file file, const char __user buf,
	403	size_t count, loff_t * ppos)
	404	{
	405	PRINTK_5(TRACE_MWAVE,
	406	"mwavedd::mwave_write entry file %p, buf %p,"
	407	" count %zx ppos %p\n",
	408	file, buf, count, ppos);
	409
	410	return -EINVAL;
	411	}
	412
	413
	414	static int register_serial_portandirq(unsigned int port, int irq)
	415	{
5981d644 AC	416	struct uart_port uart;
5981d644 AC	417
1da177e4 LT	418	switch ( port ) {
	419	case 0x3f8:
	420	case 0x2f8:
	421	case 0x3e8:
	422	case 0x2e8:
	423	/* OK */
	424	break;
	425	default:
	426	PRINTK_ERROR(KERN_ERR_MWAVE
	427	"mwavedd::register_serial_portandirq:"
	428	" Error: Illegal port %x\n", port );
	429	return -1;
	430	} /* switch */
	431	/* port is okay */
	432
	433	switch ( irq ) {
	434	case 3:
	435	case 4:
	436	case 5:
	437	case 7:
	438	/* OK */
	439	break;
	440	default:
	441	PRINTK_ERROR(KERN_ERR_MWAVE
	442	"mwavedd::register_serial_portandirq:"
	443	" Error: Illegal irq %x\n", irq );
	444	return -1;
	445	} /* switch */
	446	/* irq is okay */
	447
5981d644 AC	448	memset(&uart, 0, sizeof(struct uart_port));
	449
	450	uart.uartclk = 1843200;
	451	uart.iobase = port;
	452	uart.irq = irq;
	453	uart.iotype = UPIO_PORT;
	454	uart.flags = UPF_SHARE_IRQ;
	455	return serial8250_register_port(&uart);
1da177e4 LT	456	}
	457
	458
62322d25	459	static const struct file_operations mwave_fops = {
1da177e4 LT	460	.owner = THIS_MODULE,
	461	.read = mwave_read,
	462	.write = mwave_write,
	463	.ioctl = mwave_ioctl,
	464	.open = mwave_open,
	465	.release = mwave_close
	466	};
	467
	468
	469	static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
	470
	471	#if 0 /* totally b0rked */
	472	/*
	473	* sysfs support <paulsch@us.ibm.com>
	474	*/
	475
	476	struct device mwave_device;
	477
	478	/* Prevent code redundancy, create a macro for mwave_show_* functions. */
	479	#define mwave_show_function(attr_name, format_string, field) \
74880c06	480	static ssize_t mwave_show_##attr_name(struct device dev, struct device_attribute attr, char *buf) \
1da177e4 LT	481	{ \
	482	DSP_3780I_CONFIG_SETTINGS *pSettings = \
	483	&mwave_s_mdd.rBDData.rDspSettings; \
	484	return sprintf(buf, format_string, pSettings->field); \
	485	}
	486
	487	/* All of our attributes are read attributes. */
	488	#define mwave_dev_rd_attr(attr_name, format_string, field) \
	489	mwave_show_function(attr_name, format_string, field) \
	490	static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)
	491
	492	mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);
	493	mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);
	494	mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);
	495	mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);
	496	mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);
	497
	498	static struct device_attribute * const mwave_dev_attrs[] = {
	499	&dev_attr_3780i_dma,
	500	&dev_attr_3780i_irq,
	501	&dev_attr_3780i_io,
	502	&dev_attr_uart_irq,
	503	&dev_attr_uart_io,
	504	};
	505	#endif
	506
	507	/*
	508	* mwave_init is called on module load
	509	*
	510	* mwave_exit is called on module unload
	511	* mwave_exit is also used to clean up after an aborted mwave_init
	512	*/
	513	static void mwave_exit(void)
	514	{
	515	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
	516
	517	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
	518
	519	#if 0
	520	for (i = 0; i < pDrvData->nr_registered_attrs; i++)
	521	device_remove_file(&mwave_device, mwave_dev_attrs[i]);
	522	pDrvData->nr_registered_attrs = 0;
	523
	524	if (pDrvData->device_registered) {
	525	device_unregister(&mwave_device);
	526	pDrvData->device_registered = FALSE;
	527	}
	528	#endif
	529
	530	if ( pDrvData->sLine >= 0 ) {
5981d644	531	serial8250_unregister_port(pDrvData->sLine);
1da177e4 LT	532	}
	533	if (pDrvData->bMwaveDevRegistered) {
	534	misc_deregister(&mwave_misc_dev);
	535	}
	536	if (pDrvData->bDSPEnabled) {
	537	tp3780I_DisableDSP(&pDrvData->rBDData);
	538	}
	539	if (pDrvData->bResourcesClaimed) {
	540	tp3780I_ReleaseResources(&pDrvData->rBDData);
	541	}
	542	if (pDrvData->bBDInitialized) {
	543	tp3780I_Cleanup(&pDrvData->rBDData);
	544	}
	545
	546	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
	547	}
	548
	549	module_exit(mwave_exit);
	550
	551	static int __init mwave_init(void)
	552	{
	553	int i;
	554	int retval = 0;
	555	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
	556
	557	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
	558
	559	memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
	560
	561	pDrvData->bBDInitialized = FALSE;
	562	pDrvData->bResourcesClaimed = FALSE;
	563	pDrvData->bDSPEnabled = FALSE;
	564	pDrvData->bDSPReset = FALSE;
	565	pDrvData->bMwaveDevRegistered = FALSE;
	566	pDrvData->sLine = -1;
	567
	568	for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
	569	pDrvData->IPCs[i].bIsEnabled = FALSE;
	570	pDrvData->IPCs[i].bIsHere = FALSE;
	571	pDrvData->IPCs[i].usIntCount = 0; /* no ints received yet */
	572	init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
	573	}
	574
	575	retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
	576	PRINTK_2(TRACE_MWAVE,
	577	"mwavedd::mwave_init, return from tp3780I_InitializeBoardData"
	578	" retval %x\n",
	579	retval);
	580	if (retval) {
	581	PRINTK_ERROR(KERN_ERR_MWAVE
	582	"mwavedd::mwave_init: Error:"
	583	" Failed to initialize board data\n");
	584	goto cleanup_error;
	585	}
	586	pDrvData->bBDInitialized = TRUE;
	587
	588	retval = tp3780I_CalcResources(&pDrvData->rBDData);
	589	PRINTK_2(TRACE_MWAVE,
	590	"mwavedd::mwave_init, return from tp3780I_CalcResources"
	591	" retval %x\n",
	592	retval);
	593	if (retval) {
	594	PRINTK_ERROR(KERN_ERR_MWAVE
	595	"mwavedd:mwave_init: Error:"
596	" Failed to calculate resources\n");
597	goto cleanup_error;
598	}
599
600	retval = tp3780I_ClaimResources(&pDrvData->rBDData);
601	PRINTK_2(TRACE_MWAVE,
602	"mwavedd::mwave_init, return from tp3780I_ClaimResources"
603	" retval %x\n",
604	retval);
605	if (retval) {
606	PRINTK_ERROR(KERN_ERR_MWAVE
607	"mwavedd:mwave_init: Error:"
608	" Failed to claim resources\n");
609	goto cleanup_error;
610	}
611	pDrvData->bResourcesClaimed = TRUE;
612
613	retval = tp3780I_EnableDSP(&pDrvData->rBDData);
614	PRINTK_2(TRACE_MWAVE,
615	"mwavedd::mwave_init, return from tp3780I_EnableDSP"
616	" retval %x\n",
617	retval);
618	if (retval) {
619	PRINTK_ERROR(KERN_ERR_MWAVE
620	"mwavedd:mwave_init: Error:"
621	" Failed to enable DSP\n");
622	goto cleanup_error;
623	}
624	pDrvData->bDSPEnabled = TRUE;
625
626	if (misc_register(&mwave_misc_dev) < 0) {
627	PRINTK_ERROR(KERN_ERR_MWAVE
628	"mwavedd:mwave_init: Error:"
629	" Failed to register misc device\n");
630	goto cleanup_error;
631	}
632	pDrvData->bMwaveDevRegistered = TRUE;
633
634	pDrvData->sLine = register_serial_portandirq(
635	pDrvData->rBDData.rDspSettings.usUartBaseIO,
636	pDrvData->rBDData.rDspSettings.usUartIrq
637	);
638	if (pDrvData->sLine < 0) {
639	PRINTK_ERROR(KERN_ERR_MWAVE
640	"mwavedd:mwave_init: Error:"
641	" Failed to register serial driver\n");
642	goto cleanup_error;
643	}
644	/* uart is registered */
645
646	#if 0
647	/* sysfs */
648	memset(&mwave_device, 0, sizeof (struct device));
649	snprintf(mwave_device.bus_id, BUS_ID_SIZE, "mwave");
650
651	if (device_register(&mwave_device))
652	goto cleanup_error;
653	pDrvData->device_registered = TRUE;
654	for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
655	if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
656	PRINTK_ERROR(KERN_ERR_MWAVE
657	"mwavedd:mwave_init: Error:"
658	" Failed to create sysfs file %s\n",
659	mwave_dev_attrs[i]->attr.name);
660	goto cleanup_error;
661	}
662	pDrvData->nr_registered_attrs++;
663	}
664	#endif
665
666	/* SUCCESS! */
667	return 0;
668
669	cleanup_error:
670	PRINTK_ERROR(KERN_ERR_MWAVE
671	"mwavedd::mwave_init: Error:"
672	" Failed to initialize\n");
673	mwave_exit(); /* clean up */
674
675	return -EIO;
676	}
677
678	module_init(mwave_init);
679