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1/*2*3* mwavedd.c -- mwave device driver4*5*6* Written By: Mike Sullivan IBM Corporation7*8* Copyright (C) 1999 IBM Corporation9*10* This program is free software; you can redistribute it and/or modify11* it under the terms of the GNU General Public License as published by12* the Free Software Foundation; either version 2 of the License, or13* (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 of17* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the18* GNU General Public License for more details.19*20* NO WARRANTY21* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR22* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT23* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,24* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is25* solely responsible for determining the appropriateness of using and26* distributing the Program and assumes all risks associated with its27* exercise of rights under this Agreement, including but not limited to28* 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 LIABILITY32* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY33* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL34* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND35* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR36* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE37* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED38* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES39*40* You should have received a copy of the GNU General Public License41* along with this program; if not, write to the Free Software42* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA43*44*45* 10/23/2000 - Alpha Release46* First release to the public47*/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>59#include <linux/mutex.h>60#include <linux/delay.h>61#include <linux/serial_8250.h>62#include <linux/nospec.h>63#include "smapi.h"64#include "mwavedd.h"65#include "3780i.h"66#include "tp3780i.h"67 68MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");69MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");70MODULE_LICENSE("GPL");71 72/*73* These parameters support the setting of MWave resources. Note that no74* checks are made against other devices (ie. superio) for conflicts.75* We'll depend on users using the tpctl utility to do that for now76*/77static DEFINE_MUTEX(mwave_mutex);78int mwave_debug = 0;79int mwave_3780i_irq = 0;80int mwave_3780i_io = 0;81int mwave_uart_irq = 0;82int mwave_uart_io = 0;83module_param(mwave_debug, int, 0);84module_param_hw(mwave_3780i_irq, int, irq, 0);85module_param_hw(mwave_3780i_io, int, ioport, 0);86module_param_hw(mwave_uart_irq, int, irq, 0);87module_param_hw(mwave_uart_io, int, ioport, 0);88 89static int mwave_open(struct inode *inode, struct file *file);90static int mwave_close(struct inode *inode, struct file *file);91static long mwave_ioctl(struct file *filp, unsigned int iocmd,92 unsigned long ioarg);93 94MWAVE_DEVICE_DATA mwave_s_mdd;95 96static int mwave_open(struct inode *inode, struct file *file)97{98 unsigned int retval = 0;99 100 PRINTK_3(TRACE_MWAVE,101 "mwavedd::mwave_open, entry inode %p file %p\n",102 inode, file);103 PRINTK_2(TRACE_MWAVE,104 "mwavedd::mwave_open, exit return retval %x\n", retval);105 106 return retval;107}108 109static int mwave_close(struct inode *inode, struct file *file)110{111 unsigned int retval = 0;112 113 PRINTK_3(TRACE_MWAVE,114 "mwavedd::mwave_close, entry inode %p file %p\n",115 inode, file);116 117 PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",118 retval);119 120 return retval;121}122 123static long mwave_ioctl(struct file *file, unsigned int iocmd,124 unsigned long ioarg)125{126 unsigned int retval = 0;127 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;128 void __user *arg = (void __user *)ioarg;129 130 PRINTK_4(TRACE_MWAVE,131 "mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n",132 file, iocmd, (int) ioarg);133 134 switch (iocmd) {135 136 case IOCTL_MW_RESET:137 PRINTK_1(TRACE_MWAVE,138 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"139 " calling tp3780I_ResetDSP\n");140 mutex_lock(&mwave_mutex);141 retval = tp3780I_ResetDSP(&pDrvData->rBDData);142 mutex_unlock(&mwave_mutex);143 PRINTK_2(TRACE_MWAVE,144 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"145 " retval %x from tp3780I_ResetDSP\n",146 retval);147 break;148 149 case IOCTL_MW_RUN:150 PRINTK_1(TRACE_MWAVE,151 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"152 " calling tp3780I_StartDSP\n");153 mutex_lock(&mwave_mutex);154 retval = tp3780I_StartDSP(&pDrvData->rBDData);155 mutex_unlock(&mwave_mutex);156 PRINTK_2(TRACE_MWAVE,157 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"158 " retval %x from tp3780I_StartDSP\n",159 retval);160 break;161 162 case IOCTL_MW_DSP_ABILITIES: {163 MW_ABILITIES rAbilities;164 165 PRINTK_1(TRACE_MWAVE,166 "mwavedd::mwave_ioctl,"167 " IOCTL_MW_DSP_ABILITIES calling"168 " tp3780I_QueryAbilities\n");169 mutex_lock(&mwave_mutex);170 retval = tp3780I_QueryAbilities(&pDrvData->rBDData,171 &rAbilities);172 mutex_unlock(&mwave_mutex);173 PRINTK_2(TRACE_MWAVE,174 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"175 " retval %x from tp3780I_QueryAbilities\n",176 retval);177 if (retval == 0) {178 if( copy_to_user(arg, &rAbilities,179 sizeof(MW_ABILITIES)) )180 return -EFAULT;181 }182 PRINTK_2(TRACE_MWAVE,183 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"184 " exit retval %x\n",185 retval);186 }187 break;188 189 case IOCTL_MW_READ_DATA:190 case IOCTL_MW_READCLEAR_DATA: {191 MW_READWRITE rReadData;192 unsigned short __user *pusBuffer = NULL;193 194 if( copy_from_user(&rReadData, arg,195 sizeof(MW_READWRITE)) )196 return -EFAULT;197 pusBuffer = (unsigned short __user *) (rReadData.pBuf);198 199 PRINTK_4(TRACE_MWAVE,200 "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"201 " size %lx, ioarg %lx pusBuffer %p\n",202 rReadData.ulDataLength, ioarg, pusBuffer);203 mutex_lock(&mwave_mutex);204 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,205 iocmd,206 pusBuffer,207 rReadData.ulDataLength,208 rReadData.usDspAddress);209 mutex_unlock(&mwave_mutex);210 }211 break;212 213 case IOCTL_MW_READ_INST: {214 MW_READWRITE rReadData;215 unsigned short __user *pusBuffer = NULL;216 217 if( copy_from_user(&rReadData, arg,218 sizeof(MW_READWRITE)) )219 return -EFAULT;220 pusBuffer = (unsigned short __user *) (rReadData.pBuf);221 222 PRINTK_4(TRACE_MWAVE,223 "mwavedd::mwave_ioctl IOCTL_MW_READ_INST,"224 " size %lx, ioarg %lx pusBuffer %p\n",225 rReadData.ulDataLength / 2, ioarg,226 pusBuffer);227 mutex_lock(&mwave_mutex);228 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,229 iocmd, pusBuffer,230 rReadData.ulDataLength / 2,231 rReadData.usDspAddress);232 mutex_unlock(&mwave_mutex);233 }234 break;235 236 case IOCTL_MW_WRITE_DATA: {237 MW_READWRITE rWriteData;238 unsigned short __user *pusBuffer = NULL;239 240 if( copy_from_user(&rWriteData, arg,241 sizeof(MW_READWRITE)) )242 return -EFAULT;243 pusBuffer = (unsigned short __user *) (rWriteData.pBuf);244 245 PRINTK_4(TRACE_MWAVE,246 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA,"247 " size %lx, ioarg %lx pusBuffer %p\n",248 rWriteData.ulDataLength, ioarg,249 pusBuffer);250 mutex_lock(&mwave_mutex);251 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,252 iocmd, pusBuffer,253 rWriteData.ulDataLength,254 rWriteData.usDspAddress);255 mutex_unlock(&mwave_mutex);256 }257 break;258 259 case IOCTL_MW_WRITE_INST: {260 MW_READWRITE rWriteData;261 unsigned short __user *pusBuffer = NULL;262 263 if( copy_from_user(&rWriteData, arg,264 sizeof(MW_READWRITE)) )265 return -EFAULT;266 pusBuffer = (unsigned short __user *)(rWriteData.pBuf);267 268 PRINTK_4(TRACE_MWAVE,269 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST,"270 " size %lx, ioarg %lx pusBuffer %p\n",271 rWriteData.ulDataLength, ioarg,272 pusBuffer);273 mutex_lock(&mwave_mutex);274 retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,275 iocmd, pusBuffer,276 rWriteData.ulDataLength,277 rWriteData.usDspAddress);278 mutex_unlock(&mwave_mutex);279 }280 break;281 282 case IOCTL_MW_REGISTER_IPC: {283 unsigned int ipcnum = (unsigned int) ioarg;284 285 if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {286 PRINTK_ERROR(KERN_ERR_MWAVE287 "mwavedd::mwave_ioctl:"288 " IOCTL_MW_REGISTER_IPC:"289 " Error: Invalid ipcnum %x\n",290 ipcnum);291 return -EINVAL;292 }293 ipcnum = array_index_nospec(ipcnum,294 ARRAY_SIZE(pDrvData->IPCs));295 PRINTK_3(TRACE_MWAVE,296 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"297 " ipcnum %x entry usIntCount %x\n",298 ipcnum,299 pDrvData->IPCs[ipcnum].usIntCount);300 301 mutex_lock(&mwave_mutex);302 pDrvData->IPCs[ipcnum].bIsHere = false;303 pDrvData->IPCs[ipcnum].bIsEnabled = true;304 mutex_unlock(&mwave_mutex);305 306 PRINTK_2(TRACE_MWAVE,307 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"308 " ipcnum %x exit\n",309 ipcnum);310 }311 break;312 313 case IOCTL_MW_GET_IPC: {314 unsigned int ipcnum = (unsigned int) ioarg;315 316 if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {317 PRINTK_ERROR(KERN_ERR_MWAVE318 "mwavedd::mwave_ioctl:"319 " IOCTL_MW_GET_IPC: Error:"320 " Invalid ipcnum %x\n", ipcnum);321 return -EINVAL;322 }323 ipcnum = array_index_nospec(ipcnum,324 ARRAY_SIZE(pDrvData->IPCs));325 PRINTK_3(TRACE_MWAVE,326 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"327 " ipcnum %x, usIntCount %x\n",328 ipcnum,329 pDrvData->IPCs[ipcnum].usIntCount);330 331 mutex_lock(&mwave_mutex);332 if (pDrvData->IPCs[ipcnum].bIsEnabled == true) {333 DECLARE_WAITQUEUE(wait, current);334 335 PRINTK_2(TRACE_MWAVE,336 "mwavedd::mwave_ioctl, thread for"337 " ipc %x going to sleep\n",338 ipcnum);339 add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);340 pDrvData->IPCs[ipcnum].bIsHere = true;341 set_current_state(TASK_INTERRUPTIBLE);342 /* check whether an event was signalled by */343 /* the interrupt handler while we were gone */344 if (pDrvData->IPCs[ipcnum].usIntCount == 1) { /* first int has occurred (race condition) */345 pDrvData->IPCs[ipcnum].usIntCount = 2; /* first int has been handled */346 PRINTK_2(TRACE_MWAVE,347 "mwavedd::mwave_ioctl"348 " IOCTL_MW_GET_IPC ipcnum %x"349 " handling first int\n",350 ipcnum);351 } else { /* either 1st int has not yet occurred, or we have already handled the first int */352 schedule();353 if (pDrvData->IPCs[ipcnum].usIntCount == 1) {354 pDrvData->IPCs[ipcnum].usIntCount = 2;355 }356 PRINTK_2(TRACE_MWAVE,357 "mwavedd::mwave_ioctl"358 " IOCTL_MW_GET_IPC ipcnum %x"359 " woke up and returning to"360 " application\n",361 ipcnum);362 }363 pDrvData->IPCs[ipcnum].bIsHere = false;364 remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);365 set_current_state(TASK_RUNNING);366 PRINTK_2(TRACE_MWAVE,367 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC,"368 " returning thread for ipc %x"369 " processing\n",370 ipcnum);371 }372 mutex_unlock(&mwave_mutex);373 }374 break;375 376 case IOCTL_MW_UNREGISTER_IPC: {377 unsigned int ipcnum = (unsigned int) ioarg;378 379 PRINTK_2(TRACE_MWAVE,380 "mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC"381 " ipcnum %x\n",382 ipcnum);383 if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {384 PRINTK_ERROR(KERN_ERR_MWAVE385 "mwavedd::mwave_ioctl:"386 " IOCTL_MW_UNREGISTER_IPC:"387 " Error: Invalid ipcnum %x\n",388 ipcnum);389 return -EINVAL;390 }391 ipcnum = array_index_nospec(ipcnum,392 ARRAY_SIZE(pDrvData->IPCs));393 mutex_lock(&mwave_mutex);394 if (pDrvData->IPCs[ipcnum].bIsEnabled == true) {395 pDrvData->IPCs[ipcnum].bIsEnabled = false;396 if (pDrvData->IPCs[ipcnum].bIsHere == true) {397 wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);398 }399 }400 mutex_unlock(&mwave_mutex);401 }402 break;403 404 default:405 return -ENOTTY;406 } /* switch */407 408 PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);409 410 return retval;411}412 413 414static ssize_t mwave_read(struct file *file, char __user *buf, size_t count,415 loff_t * ppos)416{417 PRINTK_5(TRACE_MWAVE,418 "mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n",419 file, buf, count, ppos);420 421 return -EINVAL;422}423 424 425static ssize_t mwave_write(struct file *file, const char __user *buf,426 size_t count, loff_t * ppos)427{428 PRINTK_5(TRACE_MWAVE,429 "mwavedd::mwave_write entry file %p, buf %p,"430 " count %zx ppos %p\n",431 file, buf, count, ppos);432 433 return -EINVAL;434}435 436 437static int register_serial_portandirq(unsigned int port, int irq)438{439 struct uart_8250_port uart;440 441 switch ( port ) {442 case 0x3f8:443 case 0x2f8:444 case 0x3e8:445 case 0x2e8:446 /* OK */447 break;448 default:449 PRINTK_ERROR(KERN_ERR_MWAVE450 "mwavedd::register_serial_portandirq:"451 " Error: Illegal port %x\n", port );452 return -1;453 } /* switch */454 /* port is okay */455 456 switch ( irq ) {457 case 3:458 case 4:459 case 5:460 case 7:461 /* OK */462 break;463 default:464 PRINTK_ERROR(KERN_ERR_MWAVE465 "mwavedd::register_serial_portandirq:"466 " Error: Illegal irq %x\n", irq );467 return -1;468 } /* switch */469 /* irq is okay */470 471 memset(&uart, 0, sizeof(uart));472 473 uart.port.uartclk = 1843200;474 uart.port.iobase = port;475 uart.port.irq = irq;476 uart.port.iotype = UPIO_PORT;477 uart.port.flags = UPF_SHARE_IRQ;478 return serial8250_register_8250_port(&uart);479}480 481 482static const struct file_operations mwave_fops = {483 .owner = THIS_MODULE,484 .read = mwave_read,485 .write = mwave_write,486 .unlocked_ioctl = mwave_ioctl,487 .open = mwave_open,488 .release = mwave_close,489 .llseek = default_llseek,490};491 492 493static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };494 495#if 0 /* totally b0rked */496/*497 * sysfs support <paulsch@us.ibm.com>498 */499 500struct device mwave_device;501 502/* Prevent code redundancy, create a macro for mwave_show_* functions. */503#define mwave_show_function(attr_name, format_string, field) \504static ssize_t mwave_show_##attr_name(struct device *dev, struct device_attribute *attr, char *buf) \505{ \506 DSP_3780I_CONFIG_SETTINGS *pSettings = \507 &mwave_s_mdd.rBDData.rDspSettings; \508 return sprintf(buf, format_string, pSettings->field); \509}510 511/* All of our attributes are read attributes. */512#define mwave_dev_rd_attr(attr_name, format_string, field) \513 mwave_show_function(attr_name, format_string, field) \514static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)515 516mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);517mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);518mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);519mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);520mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);521 522static struct device_attribute * const mwave_dev_attrs[] = {523 &dev_attr_3780i_dma,524 &dev_attr_3780i_irq,525 &dev_attr_3780i_io,526 &dev_attr_uart_irq,527 &dev_attr_uart_io,528};529#endif530 531/*532* mwave_init is called on module load533*534* mwave_exit is called on module unload535* mwave_exit is also used to clean up after an aborted mwave_init536*/537static void mwave_exit(void)538{539 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;540 541 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");542 543#if 0544 for (i = 0; i < pDrvData->nr_registered_attrs; i++)545 device_remove_file(&mwave_device, mwave_dev_attrs[i]);546 pDrvData->nr_registered_attrs = 0;547 548 if (pDrvData->device_registered) {549 device_unregister(&mwave_device);550 pDrvData->device_registered = false;551 }552#endif553 554 if ( pDrvData->sLine >= 0 ) {555 serial8250_unregister_port(pDrvData->sLine);556 }557 if (pDrvData->bMwaveDevRegistered) {558 misc_deregister(&mwave_misc_dev);559 }560 if (pDrvData->bDSPEnabled) {561 tp3780I_DisableDSP(&pDrvData->rBDData);562 }563 if (pDrvData->bResourcesClaimed) {564 tp3780I_ReleaseResources(&pDrvData->rBDData);565 }566 if (pDrvData->bBDInitialized) {567 tp3780I_Cleanup(&pDrvData->rBDData);568 }569 570 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");571}572 573module_exit(mwave_exit);574 575static int __init mwave_init(void)576{577 int i;578 int retval = 0;579 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;580 581 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");582 583 memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));584 585 pDrvData->bBDInitialized = false;586 pDrvData->bResourcesClaimed = false;587 pDrvData->bDSPEnabled = false;588 pDrvData->bDSPReset = false;589 pDrvData->bMwaveDevRegistered = false;590 pDrvData->sLine = -1;591 592 for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {593 pDrvData->IPCs[i].bIsEnabled = false;594 pDrvData->IPCs[i].bIsHere = false;595 pDrvData->IPCs[i].usIntCount = 0; /* no ints received yet */596 init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);597 }598 599 retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);600 PRINTK_2(TRACE_MWAVE,601 "mwavedd::mwave_init, return from tp3780I_InitializeBoardData"602 " retval %x\n",603 retval);604 if (retval) {605 PRINTK_ERROR(KERN_ERR_MWAVE606 "mwavedd::mwave_init: Error:"607 " Failed to initialize board data\n");608 goto cleanup_error;609 }610 pDrvData->bBDInitialized = true;611 612 retval = tp3780I_CalcResources(&pDrvData->rBDData);613 PRINTK_2(TRACE_MWAVE,614 "mwavedd::mwave_init, return from tp3780I_CalcResources"615 " retval %x\n",616 retval);617 if (retval) {618 PRINTK_ERROR(KERN_ERR_MWAVE619 "mwavedd:mwave_init: Error:"620 " Failed to calculate resources\n");621 goto cleanup_error;622 }623 624 retval = tp3780I_ClaimResources(&pDrvData->rBDData);625 PRINTK_2(TRACE_MWAVE,626 "mwavedd::mwave_init, return from tp3780I_ClaimResources"627 " retval %x\n",628 retval);629 if (retval) {630 PRINTK_ERROR(KERN_ERR_MWAVE631 "mwavedd:mwave_init: Error:"632 " Failed to claim resources\n");633 goto cleanup_error;634 }635 pDrvData->bResourcesClaimed = true;636 637 retval = tp3780I_EnableDSP(&pDrvData->rBDData);638 PRINTK_2(TRACE_MWAVE,639 "mwavedd::mwave_init, return from tp3780I_EnableDSP"640 " retval %x\n",641 retval);642 if (retval) {643 PRINTK_ERROR(KERN_ERR_MWAVE644 "mwavedd:mwave_init: Error:"645 " Failed to enable DSP\n");646 goto cleanup_error;647 }648 pDrvData->bDSPEnabled = true;649 650 if (misc_register(&mwave_misc_dev) < 0) {651 PRINTK_ERROR(KERN_ERR_MWAVE652 "mwavedd:mwave_init: Error:"653 " Failed to register misc device\n");654 goto cleanup_error;655 }656 pDrvData->bMwaveDevRegistered = true;657 658 pDrvData->sLine = register_serial_portandirq(659 pDrvData->rBDData.rDspSettings.usUartBaseIO,660 pDrvData->rBDData.rDspSettings.usUartIrq661 );662 if (pDrvData->sLine < 0) {663 PRINTK_ERROR(KERN_ERR_MWAVE664 "mwavedd:mwave_init: Error:"665 " Failed to register serial driver\n");666 goto cleanup_error;667 }668 /* uart is registered */669 670#if 0671 /* sysfs */672 memset(&mwave_device, 0, sizeof (struct device));673 dev_set_name(&mwave_device, "mwave");674 675 if (device_register(&mwave_device))676 goto cleanup_error;677 pDrvData->device_registered = true;678 for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {679 if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {680 PRINTK_ERROR(KERN_ERR_MWAVE681 "mwavedd:mwave_init: Error:"682 " Failed to create sysfs file %s\n",683 mwave_dev_attrs[i]->attr.name);684 goto cleanup_error;685 }686 pDrvData->nr_registered_attrs++;687 }688#endif689 690 /* SUCCESS! */691 return 0;692 693cleanup_error:694 PRINTK_ERROR(KERN_ERR_MWAVE695 "mwavedd::mwave_init: Error:"696 " Failed to initialize\n");697 mwave_exit(); /* clean up */698 699 return -EIO;700}701 702module_init(mwave_init);703 704