Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 59 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | #include <linux/delay.h> |
Alan Cox | 5981d64 | 2005-08-31 22:19:33 +0100 | [diff] [blame] | 61 | #include <linux/serial_8250.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 76 | static DEFINE_MUTEX(mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | int mwave_debug = 0; |
| 78 | int mwave_3780i_irq = 0; |
| 79 | int mwave_3780i_io = 0; |
| 80 | int mwave_uart_irq = 0; |
| 81 | int mwave_uart_io = 0; |
| 82 | module_param(mwave_debug, int, 0); |
| 83 | module_param(mwave_3780i_irq, int, 0); |
| 84 | module_param(mwave_3780i_io, int, 0); |
| 85 | module_param(mwave_uart_irq, int, 0); |
| 86 | module_param(mwave_uart_io, int, 0); |
| 87 | |
| 88 | static int mwave_open(struct inode *inode, struct file *file); |
| 89 | static int mwave_close(struct inode *inode, struct file *file); |
Alan Cox | 909d145 | 2008-07-25 01:48:14 -0700 | [diff] [blame] | 90 | static long mwave_ioctl(struct file *filp, unsigned int iocmd, |
| 91 | unsigned long ioarg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | |
| 93 | MWAVE_DEVICE_DATA mwave_s_mdd; |
| 94 | |
| 95 | static int mwave_open(struct inode *inode, struct file *file) |
| 96 | { |
| 97 | unsigned int retval = 0; |
| 98 | |
| 99 | PRINTK_3(TRACE_MWAVE, |
| 100 | "mwavedd::mwave_open, entry inode %p file %p\n", |
| 101 | inode, file); |
| 102 | PRINTK_2(TRACE_MWAVE, |
| 103 | "mwavedd::mwave_open, exit return retval %x\n", retval); |
| 104 | |
| 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 | |
Alan Cox | 909d145 | 2008-07-25 01:48:14 -0700 | [diff] [blame] | 122 | static long mwave_ioctl(struct file *file, unsigned int iocmd, |
| 123 | unsigned long ioarg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | { |
| 125 | unsigned int retval = 0; |
| 126 | pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd; |
| 127 | void __user *arg = (void __user *)ioarg; |
| 128 | |
Alan Cox | 909d145 | 2008-07-25 01:48:14 -0700 | [diff] [blame] | 129 | PRINTK_4(TRACE_MWAVE, |
| 130 | "mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n", |
| 131 | file, iocmd, (int) ioarg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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"); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 139 | mutex_lock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | retval = tp3780I_ResetDSP(&pDrvData->rBDData); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 141 | mutex_unlock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | PRINTK_2(TRACE_MWAVE, |
| 143 | "mwavedd::mwave_ioctl, IOCTL_MW_RESET" |
| 144 | " retval %x from tp3780I_ResetDSP\n", |
| 145 | retval); |
| 146 | break; |
| 147 | |
| 148 | case IOCTL_MW_RUN: |
| 149 | PRINTK_1(TRACE_MWAVE, |
| 150 | "mwavedd::mwave_ioctl, IOCTL_MW_RUN" |
| 151 | " calling tp3780I_StartDSP\n"); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 152 | mutex_lock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | retval = tp3780I_StartDSP(&pDrvData->rBDData); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 154 | mutex_unlock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | PRINTK_2(TRACE_MWAVE, |
| 156 | "mwavedd::mwave_ioctl, IOCTL_MW_RUN" |
| 157 | " retval %x from tp3780I_StartDSP\n", |
| 158 | retval); |
| 159 | break; |
| 160 | |
| 161 | case IOCTL_MW_DSP_ABILITIES: { |
| 162 | MW_ABILITIES rAbilities; |
| 163 | |
| 164 | PRINTK_1(TRACE_MWAVE, |
| 165 | "mwavedd::mwave_ioctl," |
| 166 | " IOCTL_MW_DSP_ABILITIES calling" |
| 167 | " tp3780I_QueryAbilities\n"); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 168 | mutex_lock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | retval = tp3780I_QueryAbilities(&pDrvData->rBDData, |
| 170 | &rAbilities); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 171 | mutex_unlock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | PRINTK_2(TRACE_MWAVE, |
| 173 | "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES" |
| 174 | " retval %x from tp3780I_QueryAbilities\n", |
| 175 | retval); |
| 176 | if (retval == 0) { |
| 177 | if( copy_to_user(arg, &rAbilities, |
| 178 | sizeof(MW_ABILITIES)) ) |
| 179 | return -EFAULT; |
| 180 | } |
| 181 | PRINTK_2(TRACE_MWAVE, |
| 182 | "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES" |
| 183 | " exit retval %x\n", |
| 184 | retval); |
| 185 | } |
| 186 | break; |
| 187 | |
| 188 | case IOCTL_MW_READ_DATA: |
| 189 | case IOCTL_MW_READCLEAR_DATA: { |
| 190 | MW_READWRITE rReadData; |
| 191 | unsigned short __user *pusBuffer = NULL; |
| 192 | |
| 193 | if( copy_from_user(&rReadData, arg, |
| 194 | sizeof(MW_READWRITE)) ) |
| 195 | return -EFAULT; |
| 196 | pusBuffer = (unsigned short __user *) (rReadData.pBuf); |
| 197 | |
| 198 | PRINTK_4(TRACE_MWAVE, |
| 199 | "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA," |
| 200 | " size %lx, ioarg %lx pusBuffer %p\n", |
| 201 | rReadData.ulDataLength, ioarg, pusBuffer); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 202 | mutex_lock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, |
| 204 | iocmd, |
| 205 | pusBuffer, |
| 206 | rReadData.ulDataLength, |
| 207 | rReadData.usDspAddress); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 208 | mutex_unlock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | } |
| 210 | break; |
| 211 | |
| 212 | case IOCTL_MW_READ_INST: { |
| 213 | MW_READWRITE rReadData; |
| 214 | unsigned short __user *pusBuffer = NULL; |
| 215 | |
| 216 | if( copy_from_user(&rReadData, arg, |
| 217 | sizeof(MW_READWRITE)) ) |
| 218 | return -EFAULT; |
| 219 | pusBuffer = (unsigned short __user *) (rReadData.pBuf); |
| 220 | |
| 221 | PRINTK_4(TRACE_MWAVE, |
| 222 | "mwavedd::mwave_ioctl IOCTL_MW_READ_INST," |
| 223 | " size %lx, ioarg %lx pusBuffer %p\n", |
| 224 | rReadData.ulDataLength / 2, ioarg, |
| 225 | pusBuffer); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 226 | mutex_lock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, |
| 228 | iocmd, pusBuffer, |
| 229 | rReadData.ulDataLength / 2, |
| 230 | rReadData.usDspAddress); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 231 | mutex_unlock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | } |
| 233 | break; |
| 234 | |
| 235 | case IOCTL_MW_WRITE_DATA: { |
| 236 | MW_READWRITE rWriteData; |
| 237 | unsigned short __user *pusBuffer = NULL; |
| 238 | |
| 239 | if( copy_from_user(&rWriteData, arg, |
| 240 | sizeof(MW_READWRITE)) ) |
| 241 | return -EFAULT; |
| 242 | pusBuffer = (unsigned short __user *) (rWriteData.pBuf); |
| 243 | |
| 244 | PRINTK_4(TRACE_MWAVE, |
| 245 | "mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA," |
| 246 | " size %lx, ioarg %lx pusBuffer %p\n", |
| 247 | rWriteData.ulDataLength, ioarg, |
| 248 | pusBuffer); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 249 | mutex_lock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, |
| 251 | iocmd, pusBuffer, |
| 252 | rWriteData.ulDataLength, |
| 253 | rWriteData.usDspAddress); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 254 | mutex_unlock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | } |
| 256 | break; |
| 257 | |
| 258 | case IOCTL_MW_WRITE_INST: { |
| 259 | MW_READWRITE rWriteData; |
| 260 | unsigned short __user *pusBuffer = NULL; |
| 261 | |
| 262 | if( copy_from_user(&rWriteData, arg, |
| 263 | sizeof(MW_READWRITE)) ) |
| 264 | return -EFAULT; |
| 265 | pusBuffer = (unsigned short __user *)(rWriteData.pBuf); |
| 266 | |
| 267 | PRINTK_4(TRACE_MWAVE, |
| 268 | "mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST," |
| 269 | " size %lx, ioarg %lx pusBuffer %p\n", |
| 270 | rWriteData.ulDataLength, ioarg, |
| 271 | pusBuffer); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 272 | mutex_lock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData, |
| 274 | iocmd, pusBuffer, |
| 275 | rWriteData.ulDataLength, |
| 276 | rWriteData.usDspAddress); |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 277 | mutex_unlock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | } |
| 279 | break; |
| 280 | |
| 281 | case IOCTL_MW_REGISTER_IPC: { |
| 282 | unsigned int ipcnum = (unsigned int) ioarg; |
| 283 | |
Eric Sesterhenn | d698f1c | 2006-04-27 18:39:20 -0700 | [diff] [blame] | 284 | if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 286 | "mwavedd::mwave_ioctl:" |
| 287 | " IOCTL_MW_REGISTER_IPC:" |
| 288 | " Error: Invalid ipcnum %x\n", |
| 289 | ipcnum); |
| 290 | return -EINVAL; |
| 291 | } |
Roel Kluin | dc80df5 | 2009-09-23 15:57:11 -0700 | [diff] [blame] | 292 | PRINTK_3(TRACE_MWAVE, |
| 293 | "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC" |
| 294 | " ipcnum %x entry usIntCount %x\n", |
| 295 | ipcnum, |
| 296 | pDrvData->IPCs[ipcnum].usIntCount); |
| 297 | |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 298 | mutex_lock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | pDrvData->IPCs[ipcnum].bIsHere = FALSE; |
| 300 | pDrvData->IPCs[ipcnum].bIsEnabled = TRUE; |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 301 | mutex_unlock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
| 303 | PRINTK_2(TRACE_MWAVE, |
| 304 | "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC" |
| 305 | " ipcnum %x exit\n", |
| 306 | ipcnum); |
| 307 | } |
| 308 | break; |
| 309 | |
| 310 | case IOCTL_MW_GET_IPC: { |
| 311 | unsigned int ipcnum = (unsigned int) ioarg; |
| 312 | |
Eric Sesterhenn | 095d030 | 2006-09-30 23:28:05 -0700 | [diff] [blame] | 313 | if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 315 | "mwavedd::mwave_ioctl:" |
| 316 | " IOCTL_MW_GET_IPC: Error:" |
| 317 | " Invalid ipcnum %x\n", ipcnum); |
| 318 | return -EINVAL; |
| 319 | } |
Roel Kluin | dc80df5 | 2009-09-23 15:57:11 -0700 | [diff] [blame] | 320 | PRINTK_3(TRACE_MWAVE, |
| 321 | "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC" |
| 322 | " ipcnum %x, usIntCount %x\n", |
| 323 | ipcnum, |
| 324 | pDrvData->IPCs[ipcnum].usIntCount); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 326 | mutex_lock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) { |
| 328 | DECLARE_WAITQUEUE(wait, current); |
| 329 | |
| 330 | PRINTK_2(TRACE_MWAVE, |
| 331 | "mwavedd::mwave_ioctl, thread for" |
| 332 | " ipc %x going to sleep\n", |
| 333 | ipcnum); |
| 334 | add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait); |
| 335 | pDrvData->IPCs[ipcnum].bIsHere = TRUE; |
| 336 | set_current_state(TASK_INTERRUPTIBLE); |
| 337 | /* check whether an event was signalled by */ |
| 338 | /* the interrupt handler while we were gone */ |
| 339 | if (pDrvData->IPCs[ipcnum].usIntCount == 1) { /* first int has occurred (race condition) */ |
| 340 | pDrvData->IPCs[ipcnum].usIntCount = 2; /* first int has been handled */ |
| 341 | PRINTK_2(TRACE_MWAVE, |
| 342 | "mwavedd::mwave_ioctl" |
| 343 | " IOCTL_MW_GET_IPC ipcnum %x" |
| 344 | " handling first int\n", |
| 345 | ipcnum); |
| 346 | } else { /* either 1st int has not yet occurred, or we have already handled the first int */ |
| 347 | schedule(); |
| 348 | if (pDrvData->IPCs[ipcnum].usIntCount == 1) { |
| 349 | pDrvData->IPCs[ipcnum].usIntCount = 2; |
| 350 | } |
| 351 | PRINTK_2(TRACE_MWAVE, |
| 352 | "mwavedd::mwave_ioctl" |
| 353 | " IOCTL_MW_GET_IPC ipcnum %x" |
| 354 | " woke up and returning to" |
| 355 | " application\n", |
| 356 | ipcnum); |
| 357 | } |
| 358 | pDrvData->IPCs[ipcnum].bIsHere = FALSE; |
| 359 | remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait); |
| 360 | set_current_state(TASK_RUNNING); |
| 361 | PRINTK_2(TRACE_MWAVE, |
| 362 | "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC," |
| 363 | " returning thread for ipc %x" |
| 364 | " processing\n", |
| 365 | ipcnum); |
| 366 | } |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 367 | mutex_unlock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | } |
| 369 | break; |
| 370 | |
| 371 | case IOCTL_MW_UNREGISTER_IPC: { |
| 372 | unsigned int ipcnum = (unsigned int) ioarg; |
| 373 | |
| 374 | PRINTK_2(TRACE_MWAVE, |
| 375 | "mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC" |
| 376 | " ipcnum %x\n", |
| 377 | ipcnum); |
Eric Sesterhenn | 095d030 | 2006-09-30 23:28:05 -0700 | [diff] [blame] | 378 | if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 380 | "mwavedd::mwave_ioctl:" |
| 381 | " IOCTL_MW_UNREGISTER_IPC:" |
| 382 | " Error: Invalid ipcnum %x\n", |
| 383 | ipcnum); |
| 384 | return -EINVAL; |
| 385 | } |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 386 | mutex_lock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) { |
| 388 | pDrvData->IPCs[ipcnum].bIsEnabled = FALSE; |
| 389 | if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) { |
| 390 | wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue); |
| 391 | } |
| 392 | } |
Arnd Bergmann | 613655f | 2010-06-02 14:28:52 +0200 | [diff] [blame] | 393 | mutex_unlock(&mwave_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | } |
| 395 | break; |
| 396 | |
| 397 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | return -ENOTTY; |
| 399 | break; |
| 400 | } /* switch */ |
| 401 | |
| 402 | PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval); |
| 403 | |
| 404 | return retval; |
| 405 | } |
| 406 | |
| 407 | |
| 408 | static ssize_t mwave_read(struct file *file, char __user *buf, size_t count, |
| 409 | loff_t * ppos) |
| 410 | { |
| 411 | PRINTK_5(TRACE_MWAVE, |
| 412 | "mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n", |
| 413 | file, buf, count, ppos); |
| 414 | |
| 415 | return -EINVAL; |
| 416 | } |
| 417 | |
| 418 | |
| 419 | static ssize_t mwave_write(struct file *file, const char __user *buf, |
| 420 | size_t count, loff_t * ppos) |
| 421 | { |
| 422 | PRINTK_5(TRACE_MWAVE, |
| 423 | "mwavedd::mwave_write entry file %p, buf %p," |
| 424 | " count %zx ppos %p\n", |
| 425 | file, buf, count, ppos); |
| 426 | |
| 427 | return -EINVAL; |
| 428 | } |
| 429 | |
| 430 | |
| 431 | static int register_serial_portandirq(unsigned int port, int irq) |
| 432 | { |
Alan Cox | ce7240e | 2012-07-17 17:06:20 +0100 | [diff] [blame^] | 433 | struct uart_8250_port uart; |
Alan Cox | 5981d64 | 2005-08-31 22:19:33 +0100 | [diff] [blame] | 434 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | switch ( port ) { |
| 436 | case 0x3f8: |
| 437 | case 0x2f8: |
| 438 | case 0x3e8: |
| 439 | case 0x2e8: |
| 440 | /* OK */ |
| 441 | break; |
| 442 | default: |
| 443 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 444 | "mwavedd::register_serial_portandirq:" |
| 445 | " Error: Illegal port %x\n", port ); |
| 446 | return -1; |
| 447 | } /* switch */ |
| 448 | /* port is okay */ |
| 449 | |
| 450 | switch ( irq ) { |
| 451 | case 3: |
| 452 | case 4: |
| 453 | case 5: |
| 454 | case 7: |
| 455 | /* OK */ |
| 456 | break; |
| 457 | default: |
| 458 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 459 | "mwavedd::register_serial_portandirq:" |
| 460 | " Error: Illegal irq %x\n", irq ); |
| 461 | return -1; |
| 462 | } /* switch */ |
| 463 | /* irq is okay */ |
| 464 | |
Alan Cox | ce7240e | 2012-07-17 17:06:20 +0100 | [diff] [blame^] | 465 | memset(&uart, 0, sizeof(uart)); |
Alan Cox | 5981d64 | 2005-08-31 22:19:33 +0100 | [diff] [blame] | 466 | |
Alan Cox | ce7240e | 2012-07-17 17:06:20 +0100 | [diff] [blame^] | 467 | uart.port.uartclk = 1843200; |
| 468 | uart.port.iobase = port; |
| 469 | uart.port.irq = irq; |
| 470 | uart.port.iotype = UPIO_PORT; |
| 471 | uart.port.flags = UPF_SHARE_IRQ; |
| 472 | return serial8250_register_8250_port(&uart); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | |
Arjan van de Ven | 62322d2 | 2006-07-03 00:24:21 -0700 | [diff] [blame] | 476 | static const struct file_operations mwave_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | .owner = THIS_MODULE, |
| 478 | .read = mwave_read, |
| 479 | .write = mwave_write, |
Alan Cox | 909d145 | 2008-07-25 01:48:14 -0700 | [diff] [blame] | 480 | .unlocked_ioctl = mwave_ioctl, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | .open = mwave_open, |
Arnd Bergmann | 6038f37 | 2010-08-15 18:52:59 +0200 | [diff] [blame] | 482 | .release = mwave_close, |
| 483 | .llseek = default_llseek, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | }; |
| 485 | |
| 486 | |
| 487 | static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops }; |
| 488 | |
| 489 | #if 0 /* totally b0rked */ |
| 490 | /* |
| 491 | * sysfs support <paulsch@us.ibm.com> |
| 492 | */ |
| 493 | |
| 494 | struct device mwave_device; |
| 495 | |
| 496 | /* Prevent code redundancy, create a macro for mwave_show_* functions. */ |
| 497 | #define mwave_show_function(attr_name, format_string, field) \ |
Yani Ioannou | 74880c0 | 2005-05-17 06:41:12 -0400 | [diff] [blame] | 498 | static ssize_t mwave_show_##attr_name(struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | { \ |
| 500 | DSP_3780I_CONFIG_SETTINGS *pSettings = \ |
| 501 | &mwave_s_mdd.rBDData.rDspSettings; \ |
| 502 | return sprintf(buf, format_string, pSettings->field); \ |
| 503 | } |
| 504 | |
| 505 | /* All of our attributes are read attributes. */ |
| 506 | #define mwave_dev_rd_attr(attr_name, format_string, field) \ |
| 507 | mwave_show_function(attr_name, format_string, field) \ |
| 508 | static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL) |
| 509 | |
| 510 | mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma); |
| 511 | mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq); |
| 512 | mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO); |
| 513 | mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq); |
| 514 | mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO); |
| 515 | |
| 516 | static struct device_attribute * const mwave_dev_attrs[] = { |
| 517 | &dev_attr_3780i_dma, |
| 518 | &dev_attr_3780i_irq, |
| 519 | &dev_attr_3780i_io, |
| 520 | &dev_attr_uart_irq, |
| 521 | &dev_attr_uart_io, |
| 522 | }; |
| 523 | #endif |
| 524 | |
| 525 | /* |
| 526 | * mwave_init is called on module load |
| 527 | * |
| 528 | * mwave_exit is called on module unload |
| 529 | * mwave_exit is also used to clean up after an aborted mwave_init |
| 530 | */ |
| 531 | static void mwave_exit(void) |
| 532 | { |
| 533 | pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd; |
| 534 | |
| 535 | PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n"); |
| 536 | |
| 537 | #if 0 |
| 538 | for (i = 0; i < pDrvData->nr_registered_attrs; i++) |
| 539 | device_remove_file(&mwave_device, mwave_dev_attrs[i]); |
| 540 | pDrvData->nr_registered_attrs = 0; |
| 541 | |
| 542 | if (pDrvData->device_registered) { |
| 543 | device_unregister(&mwave_device); |
| 544 | pDrvData->device_registered = FALSE; |
| 545 | } |
| 546 | #endif |
| 547 | |
| 548 | if ( pDrvData->sLine >= 0 ) { |
Alan Cox | 5981d64 | 2005-08-31 22:19:33 +0100 | [diff] [blame] | 549 | serial8250_unregister_port(pDrvData->sLine); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 550 | } |
| 551 | if (pDrvData->bMwaveDevRegistered) { |
| 552 | misc_deregister(&mwave_misc_dev); |
| 553 | } |
| 554 | if (pDrvData->bDSPEnabled) { |
| 555 | tp3780I_DisableDSP(&pDrvData->rBDData); |
| 556 | } |
| 557 | if (pDrvData->bResourcesClaimed) { |
| 558 | tp3780I_ReleaseResources(&pDrvData->rBDData); |
| 559 | } |
| 560 | if (pDrvData->bBDInitialized) { |
| 561 | tp3780I_Cleanup(&pDrvData->rBDData); |
| 562 | } |
| 563 | |
| 564 | PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n"); |
| 565 | } |
| 566 | |
| 567 | module_exit(mwave_exit); |
| 568 | |
| 569 | static int __init mwave_init(void) |
| 570 | { |
| 571 | int i; |
| 572 | int retval = 0; |
| 573 | pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd; |
| 574 | |
| 575 | PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n"); |
| 576 | |
| 577 | memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA)); |
| 578 | |
| 579 | pDrvData->bBDInitialized = FALSE; |
| 580 | pDrvData->bResourcesClaimed = FALSE; |
| 581 | pDrvData->bDSPEnabled = FALSE; |
| 582 | pDrvData->bDSPReset = FALSE; |
| 583 | pDrvData->bMwaveDevRegistered = FALSE; |
| 584 | pDrvData->sLine = -1; |
| 585 | |
| 586 | for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) { |
| 587 | pDrvData->IPCs[i].bIsEnabled = FALSE; |
| 588 | pDrvData->IPCs[i].bIsHere = FALSE; |
| 589 | pDrvData->IPCs[i].usIntCount = 0; /* no ints received yet */ |
| 590 | init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue); |
| 591 | } |
| 592 | |
| 593 | retval = tp3780I_InitializeBoardData(&pDrvData->rBDData); |
| 594 | PRINTK_2(TRACE_MWAVE, |
| 595 | "mwavedd::mwave_init, return from tp3780I_InitializeBoardData" |
| 596 | " retval %x\n", |
| 597 | retval); |
| 598 | if (retval) { |
| 599 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 600 | "mwavedd::mwave_init: Error:" |
| 601 | " Failed to initialize board data\n"); |
| 602 | goto cleanup_error; |
| 603 | } |
| 604 | pDrvData->bBDInitialized = TRUE; |
| 605 | |
| 606 | retval = tp3780I_CalcResources(&pDrvData->rBDData); |
| 607 | PRINTK_2(TRACE_MWAVE, |
| 608 | "mwavedd::mwave_init, return from tp3780I_CalcResources" |
| 609 | " retval %x\n", |
| 610 | retval); |
| 611 | if (retval) { |
| 612 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 613 | "mwavedd:mwave_init: Error:" |
| 614 | " Failed to calculate resources\n"); |
| 615 | goto cleanup_error; |
| 616 | } |
| 617 | |
| 618 | retval = tp3780I_ClaimResources(&pDrvData->rBDData); |
| 619 | PRINTK_2(TRACE_MWAVE, |
| 620 | "mwavedd::mwave_init, return from tp3780I_ClaimResources" |
| 621 | " retval %x\n", |
| 622 | retval); |
| 623 | if (retval) { |
| 624 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 625 | "mwavedd:mwave_init: Error:" |
| 626 | " Failed to claim resources\n"); |
| 627 | goto cleanup_error; |
| 628 | } |
| 629 | pDrvData->bResourcesClaimed = TRUE; |
| 630 | |
| 631 | retval = tp3780I_EnableDSP(&pDrvData->rBDData); |
| 632 | PRINTK_2(TRACE_MWAVE, |
| 633 | "mwavedd::mwave_init, return from tp3780I_EnableDSP" |
| 634 | " retval %x\n", |
| 635 | retval); |
| 636 | if (retval) { |
| 637 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 638 | "mwavedd:mwave_init: Error:" |
| 639 | " Failed to enable DSP\n"); |
| 640 | goto cleanup_error; |
| 641 | } |
| 642 | pDrvData->bDSPEnabled = TRUE; |
| 643 | |
| 644 | if (misc_register(&mwave_misc_dev) < 0) { |
| 645 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 646 | "mwavedd:mwave_init: Error:" |
| 647 | " Failed to register misc device\n"); |
| 648 | goto cleanup_error; |
| 649 | } |
| 650 | pDrvData->bMwaveDevRegistered = TRUE; |
| 651 | |
| 652 | pDrvData->sLine = register_serial_portandirq( |
| 653 | pDrvData->rBDData.rDspSettings.usUartBaseIO, |
| 654 | pDrvData->rBDData.rDspSettings.usUartIrq |
| 655 | ); |
| 656 | if (pDrvData->sLine < 0) { |
| 657 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 658 | "mwavedd:mwave_init: Error:" |
| 659 | " Failed to register serial driver\n"); |
| 660 | goto cleanup_error; |
| 661 | } |
| 662 | /* uart is registered */ |
| 663 | |
| 664 | #if 0 |
| 665 | /* sysfs */ |
| 666 | memset(&mwave_device, 0, sizeof (struct device)); |
Kay Sievers | 24d2547 | 2009-01-06 10:44:38 -0800 | [diff] [blame] | 667 | dev_set_name(&mwave_device, "mwave"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | |
| 669 | if (device_register(&mwave_device)) |
| 670 | goto cleanup_error; |
| 671 | pDrvData->device_registered = TRUE; |
| 672 | for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) { |
| 673 | if(device_create_file(&mwave_device, mwave_dev_attrs[i])) { |
| 674 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 675 | "mwavedd:mwave_init: Error:" |
| 676 | " Failed to create sysfs file %s\n", |
| 677 | mwave_dev_attrs[i]->attr.name); |
| 678 | goto cleanup_error; |
| 679 | } |
| 680 | pDrvData->nr_registered_attrs++; |
| 681 | } |
| 682 | #endif |
| 683 | |
| 684 | /* SUCCESS! */ |
| 685 | return 0; |
| 686 | |
| 687 | cleanup_error: |
| 688 | PRINTK_ERROR(KERN_ERR_MWAVE |
| 689 | "mwavedd::mwave_init: Error:" |
| 690 | " Failed to initialize\n"); |
| 691 | mwave_exit(); /* clean up */ |
| 692 | |
| 693 | return -EIO; |
| 694 | } |
| 695 | |
| 696 | module_init(mwave_init); |
| 697 | |