David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1 | /** |
| 2 | * @file me8100_di.c |
| 3 | * |
| 4 | * @brief ME-8100 digital input subdevice instance. |
| 5 | * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) |
| 6 | * @author Guenter Gebhardt |
| 7 | * @author Krzysztof Gantzke (k.gantzke@meilhaus.de) |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) |
| 12 | * |
| 13 | * This file is free software; you can redistribute it and/or modify |
| 14 | * it under the terms of the GNU General Public License as published by |
| 15 | * the Free Software Foundation; either version 2 of the License, or |
| 16 | * (at your option) any later version. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, |
| 19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | * GNU General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 26 | */ |
| 27 | |
| 28 | #ifndef __KERNEL__ |
| 29 | # define __KERNEL__ |
| 30 | #endif |
| 31 | |
| 32 | /* |
| 33 | * Includes |
| 34 | */ |
| 35 | #include <linux/module.h> |
| 36 | |
| 37 | #include <linux/slab.h> |
| 38 | #include <linux/spinlock.h> |
Alexander Beregalov | 451084d | 2009-03-16 19:45:13 +0300 | [diff] [blame] | 39 | #include <linux/io.h> |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 40 | #include <linux/types.h> |
| 41 | #include <linux/interrupt.h> |
| 42 | #include <linux/version.h> |
| 43 | |
| 44 | #include "medefines.h" |
| 45 | #include "meerror.h" |
| 46 | |
| 47 | #include "meids.h" |
| 48 | #include "medebug.h" |
| 49 | #include "meplx_reg.h" |
| 50 | #include "me8100_reg.h" |
| 51 | #include "me8100_di_reg.h" |
| 52 | #include "me8100_di.h" |
| 53 | |
| 54 | /* |
| 55 | * Defines |
| 56 | */ |
| 57 | |
| 58 | /* |
| 59 | * Functions |
| 60 | */ |
| 61 | |
| 62 | static int me8100_di_io_reset_subdevice(struct me_subdevice *subdevice, |
| 63 | struct file *filep, int flags) |
| 64 | { |
| 65 | me8100_di_subdevice_t *instance; |
| 66 | unsigned short ctrl; |
| 67 | unsigned long cpu_flags; |
| 68 | |
| 69 | PDEBUG("executed.\n"); |
| 70 | |
| 71 | instance = (me8100_di_subdevice_t *) subdevice; |
| 72 | |
| 73 | if (flags) { |
| 74 | PERROR("Invalid flag specified.\n"); |
| 75 | return ME_ERRNO_INVALID_FLAGS; |
| 76 | } |
| 77 | |
| 78 | ME_SUBDEVICE_ENTER; |
| 79 | |
| 80 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 81 | spin_lock(instance->ctrl_reg_lock); |
| 82 | ctrl = inw(instance->ctrl_reg); |
| 83 | ctrl &= ~(ME8100_DIO_CTRL_BIT_INTB_1 | ME8100_DIO_CTRL_BIT_INTB_0); |
| 84 | outw(ctrl, instance->ctrl_reg); |
| 85 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 86 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 87 | spin_unlock(instance->ctrl_reg_lock); |
| 88 | |
| 89 | outw(0, instance->mask_reg); |
| 90 | PDEBUG_REG("mask_reg outw(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 91 | instance->mask_reg - instance->reg_base, 0); |
| 92 | outw(0, instance->pattern_reg); |
| 93 | PDEBUG_REG("pattern_reg outw(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 94 | instance->pattern_reg - instance->reg_base, 0); |
| 95 | instance->rised = -1; |
| 96 | instance->irq_count = 0; |
| 97 | instance->filtering_flag = 0; |
| 98 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 99 | |
| 100 | outl(PLX_INTCSR_LOCAL_INT1_EN | |
| 101 | PLX_INTCSR_LOCAL_INT1_POL | |
| 102 | PLX_INTCSR_LOCAL_INT2_EN | |
| 103 | PLX_INTCSR_LOCAL_INT2_POL | |
| 104 | PLX_INTCSR_PCI_INT_EN, instance->irq_status_reg); |
| 105 | PDEBUG_REG("plx:irq_status_reg outl(0x%lX)=0x%x\n", |
| 106 | instance->irq_status_reg, |
| 107 | PLX_INTCSR_LOCAL_INT1_EN | PLX_INTCSR_LOCAL_INT1_POL | |
| 108 | PLX_INTCSR_LOCAL_INT2_EN | PLX_INTCSR_LOCAL_INT2_POL | |
| 109 | PLX_INTCSR_PCI_INT_EN); |
| 110 | |
| 111 | wake_up_interruptible_all(&instance->wait_queue); |
| 112 | ME_SUBDEVICE_EXIT; |
| 113 | |
| 114 | return ME_ERRNO_SUCCESS; |
| 115 | } |
| 116 | |
Alexander Beregalov | 451084d | 2009-03-16 19:45:13 +0300 | [diff] [blame] | 117 | static int me8100_di_io_irq_start(me_subdevice_t *subdevice, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 118 | struct file *filep, |
| 119 | int channel, |
| 120 | int irq_source, |
| 121 | int irq_edge, int irq_arg, int flags) |
| 122 | { |
| 123 | me8100_di_subdevice_t *instance; |
| 124 | int err = ME_ERRNO_SUCCESS; |
| 125 | uint16_t ctrl; |
| 126 | unsigned long cpu_flags; |
| 127 | |
| 128 | PDEBUG("executed.\n"); |
| 129 | |
| 130 | instance = (me8100_di_subdevice_t *) subdevice; |
| 131 | |
| 132 | if (irq_source == ME_IRQ_SOURCE_DIO_PATTERN) { |
| 133 | if (flags & |
| 134 | ~(ME_IO_IRQ_START_PATTERN_FILTERING | |
| 135 | ME_IO_IRQ_START_DIO_WORD)) { |
| 136 | PERROR("Invalid flag specified.\n"); |
| 137 | return ME_ERRNO_INVALID_FLAGS; |
| 138 | } |
| 139 | |
| 140 | if (irq_edge != ME_IRQ_EDGE_NOT_USED) { |
| 141 | PERROR("Invalid irq edge specified.\n"); |
| 142 | return ME_ERRNO_INVALID_IRQ_EDGE; |
| 143 | } |
| 144 | } else if (irq_source == ME_IRQ_SOURCE_DIO_MASK) { |
| 145 | if (flags & |
| 146 | ~(ME_IO_IRQ_START_EXTENDED_STATUS | |
| 147 | ME_IO_IRQ_START_DIO_WORD)) { |
| 148 | PERROR("Invalid flag specified.\n"); |
| 149 | return ME_ERRNO_INVALID_FLAGS; |
| 150 | } |
| 151 | |
| 152 | if (irq_edge != ME_IRQ_EDGE_ANY) { |
| 153 | PERROR("Invalid irq edge specified.\n"); |
| 154 | return ME_ERRNO_INVALID_IRQ_EDGE; |
| 155 | } |
| 156 | |
| 157 | if (!(irq_arg & 0xFFFF)) { |
| 158 | PERROR("No mask specified.\n"); |
| 159 | return ME_ERRNO_INVALID_IRQ_ARG; |
| 160 | } |
| 161 | } else { |
| 162 | PERROR("Invalid irq source specified.\n"); |
| 163 | return ME_ERRNO_INVALID_IRQ_SOURCE; |
| 164 | } |
| 165 | |
| 166 | if (channel) { |
| 167 | PERROR("Invalid channel specified.\n"); |
| 168 | return ME_ERRNO_INVALID_CHANNEL; |
| 169 | } |
| 170 | |
| 171 | ME_SUBDEVICE_ENTER; |
| 172 | |
| 173 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 174 | if (irq_source == ME_IRQ_SOURCE_DIO_PATTERN) { |
| 175 | outw(irq_arg, instance->pattern_reg); |
| 176 | instance->compare_value = irq_arg; |
| 177 | instance->filtering_flag = |
| 178 | (flags & ME_IO_IRQ_START_PATTERN_FILTERING) ? 1 : 0; |
| 179 | } |
| 180 | if (irq_source == ME_IRQ_SOURCE_DIO_MASK) { |
| 181 | outw(irq_arg, instance->mask_reg); |
| 182 | } |
| 183 | |
| 184 | spin_lock(instance->ctrl_reg_lock); |
| 185 | ctrl = inw(instance->ctrl_reg); |
| 186 | ctrl |= ME8100_DIO_CTRL_BIT_INTB_0; |
| 187 | if (irq_source == ME_IRQ_SOURCE_DIO_PATTERN) { |
| 188 | ctrl &= ~ME8100_DIO_CTRL_BIT_INTB_1; |
| 189 | } |
| 190 | |
| 191 | if (irq_source == ME_IRQ_SOURCE_DIO_MASK) { |
| 192 | ctrl |= ME8100_DIO_CTRL_BIT_INTB_1; |
| 193 | } |
| 194 | outw(ctrl, instance->ctrl_reg); |
| 195 | PDEBUG_REG("ctrl_reg outw(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 196 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 197 | spin_unlock(instance->ctrl_reg_lock); |
| 198 | |
| 199 | instance->rised = 0; |
| 200 | instance->status_value = 0; |
| 201 | instance->status_value_edges = 0; |
| 202 | instance->line_value = inw(instance->port_reg); |
| 203 | instance->status_flag = flags & ME_IO_IRQ_START_EXTENDED_STATUS; |
| 204 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 205 | |
| 206 | ME_SUBDEVICE_EXIT; |
| 207 | |
| 208 | return err; |
| 209 | } |
| 210 | |
Alexander Beregalov | 451084d | 2009-03-16 19:45:13 +0300 | [diff] [blame] | 211 | static int me8100_di_io_irq_wait(me_subdevice_t *subdevice, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 212 | struct file *filep, |
| 213 | int channel, |
| 214 | int *irq_count, |
| 215 | int *value, int time_out, int flags) |
| 216 | { |
| 217 | me8100_di_subdevice_t *instance; |
| 218 | int err = ME_ERRNO_SUCCESS; |
| 219 | long t = 0; |
| 220 | unsigned long cpu_flags; |
| 221 | int count; |
| 222 | |
| 223 | PDEBUG("executed.\n"); |
| 224 | PDEVELOP("PID: %d.\n", current->pid); |
| 225 | |
| 226 | instance = (me8100_di_subdevice_t *) subdevice; |
| 227 | |
| 228 | if (flags & |
| 229 | ~(ME_IO_IRQ_WAIT_NORMAL_STATUS | ME_IO_IRQ_WAIT_EXTENDED_STATUS)) { |
| 230 | PERROR("Invalid flag specified.\n"); |
| 231 | return ME_ERRNO_INVALID_FLAGS; |
| 232 | } |
| 233 | |
| 234 | if (channel) { |
| 235 | PERROR("Invalid channel specified.\n"); |
| 236 | return ME_ERRNO_INVALID_CHANNEL; |
| 237 | } |
| 238 | |
| 239 | if (time_out < 0) { |
| 240 | PERROR("Invalid time_out specified.\n"); |
| 241 | return ME_ERRNO_INVALID_TIMEOUT; |
| 242 | } |
| 243 | |
| 244 | if (time_out) { |
| 245 | t = (time_out * HZ) / 1000; |
| 246 | |
| 247 | if (t == 0) |
| 248 | t = 1; |
| 249 | } |
| 250 | |
| 251 | ME_SUBDEVICE_ENTER; |
| 252 | |
| 253 | if (instance->rised <= 0) { |
| 254 | instance->rised = 0; |
| 255 | count = instance->irq_count; |
| 256 | |
| 257 | if (time_out) { |
| 258 | t = wait_event_interruptible_timeout(instance-> |
| 259 | wait_queue, |
| 260 | ((count != |
| 261 | instance-> |
| 262 | irq_count) |
| 263 | || (instance-> |
| 264 | rised < 0)), |
| 265 | t); |
| 266 | // t = wait_event_interruptible_timeout(instance->wait_queue, (instance->rised != 0), t); |
| 267 | if (t == 0) { |
| 268 | PERROR("Wait on interrupt timed out.\n"); |
| 269 | err = ME_ERRNO_TIMEOUT; |
| 270 | } |
| 271 | } else { |
| 272 | wait_event_interruptible(instance->wait_queue, |
| 273 | ((count != instance->irq_count) |
| 274 | || (instance->rised < 0))); |
| 275 | // wait_event_interruptible(instance->wait_queue, (instance->rised != 0)); |
| 276 | } |
| 277 | |
| 278 | if (instance->rised < 0) { |
| 279 | PERROR("Wait on interrupt aborted by user.\n"); |
| 280 | err = ME_ERRNO_CANCELLED; |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | if (signal_pending(current)) { |
| 285 | PERROR("Wait on interrupt aborted by signal.\n"); |
| 286 | err = ME_ERRNO_SIGNAL; |
| 287 | } |
| 288 | |
| 289 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 290 | *irq_count = instance->irq_count; |
| 291 | if (!err) { |
| 292 | if (flags & ME_IO_IRQ_WAIT_NORMAL_STATUS) { |
| 293 | *value = instance->status_value; |
| 294 | } else if (flags & ME_IO_IRQ_WAIT_EXTENDED_STATUS) { |
| 295 | *value = instance->status_value_edges; |
| 296 | } else { // Use default |
| 297 | if (!instance->status_flag) { |
| 298 | *value = instance->status_value; |
| 299 | } else { |
| 300 | *value = instance->status_value_edges; |
| 301 | } |
| 302 | } |
| 303 | instance->rised = 0; |
| 304 | /* |
| 305 | instance->status_value = 0; |
| 306 | instance->status_value_edges = 0; |
| 307 | */ |
| 308 | } else { |
| 309 | *value = 0; |
| 310 | } |
| 311 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 312 | |
| 313 | ME_SUBDEVICE_EXIT; |
| 314 | |
| 315 | return err; |
| 316 | } |
| 317 | |
Alexander Beregalov | 451084d | 2009-03-16 19:45:13 +0300 | [diff] [blame] | 318 | static int me8100_di_io_irq_stop(me_subdevice_t *subdevice, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 319 | struct file *filep, int channel, int flags) |
| 320 | { |
| 321 | me8100_di_subdevice_t *instance; |
| 322 | uint16_t ctrl; |
| 323 | unsigned long cpu_flags; |
| 324 | |
| 325 | PDEBUG("executed.\n"); |
| 326 | |
| 327 | instance = (me8100_di_subdevice_t *) subdevice; |
| 328 | |
| 329 | if (flags) { |
| 330 | PERROR("Invalid flag specified.\n"); |
| 331 | return ME_ERRNO_INVALID_FLAGS; |
| 332 | } |
| 333 | |
| 334 | if (channel) { |
| 335 | PERROR("Invalid channel specified.\n"); |
| 336 | return ME_ERRNO_INVALID_CHANNEL; |
| 337 | } |
| 338 | |
| 339 | ME_SUBDEVICE_ENTER; |
| 340 | |
| 341 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 342 | spin_lock(instance->ctrl_reg_lock); |
| 343 | ctrl = inw(instance->ctrl_reg); |
| 344 | ctrl &= ~(ME8100_DIO_CTRL_BIT_INTB_1 | ME8100_DIO_CTRL_BIT_INTB_0); |
| 345 | outw(ctrl, instance->ctrl_reg); |
| 346 | PDEBUG_REG("ctrl_reg outw(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 347 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 348 | spin_unlock(instance->ctrl_reg_lock); |
| 349 | instance->rised = -1; |
| 350 | instance->status_value = 0; |
| 351 | instance->status_value_edges = 0; |
| 352 | instance->filtering_flag = 0; |
| 353 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 354 | wake_up_interruptible_all(&instance->wait_queue); |
| 355 | |
| 356 | ME_SUBDEVICE_EXIT; |
| 357 | |
| 358 | return ME_ERRNO_SUCCESS; |
| 359 | } |
| 360 | |
Alexander Beregalov | 451084d | 2009-03-16 19:45:13 +0300 | [diff] [blame] | 361 | static int me8100_di_io_single_config(me_subdevice_t *subdevice, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 362 | struct file *filep, |
| 363 | int channel, |
| 364 | int single_config, |
| 365 | int ref, |
| 366 | int trig_chan, |
| 367 | int trig_type, int trig_edge, int flags) |
| 368 | { |
| 369 | me8100_di_subdevice_t *instance; |
| 370 | int err = ME_ERRNO_SUCCESS; |
| 371 | |
| 372 | PDEBUG("executed.\n"); |
| 373 | |
| 374 | instance = (me8100_di_subdevice_t *) subdevice; |
| 375 | |
| 376 | ME_SUBDEVICE_ENTER; |
| 377 | |
| 378 | spin_lock(&instance->subdevice_lock); |
| 379 | |
| 380 | switch (flags) { |
| 381 | case ME_IO_SINGLE_CONFIG_NO_FLAGS: |
| 382 | case ME_IO_SINGLE_CONFIG_DIO_WORD: |
| 383 | if (channel == 0) { |
| 384 | if (single_config == ME_SINGLE_CONFIG_DIO_INPUT) { |
| 385 | } else { |
| 386 | PERROR |
| 387 | ("Invalid port configuration specified.\n"); |
| 388 | err = ME_ERRNO_INVALID_SINGLE_CONFIG; |
| 389 | } |
| 390 | } else { |
| 391 | PERROR("Invalid channel number.\n"); |
| 392 | err = ME_ERRNO_INVALID_CHANNEL; |
| 393 | } |
| 394 | break; |
| 395 | |
| 396 | default: |
| 397 | PERROR("Invalid flags specified.\n"); |
| 398 | err = ME_ERRNO_INVALID_FLAGS; |
| 399 | } |
| 400 | |
| 401 | spin_unlock(&instance->subdevice_lock); |
| 402 | |
| 403 | ME_SUBDEVICE_EXIT; |
| 404 | |
| 405 | return err; |
| 406 | } |
| 407 | |
Alexander Beregalov | 451084d | 2009-03-16 19:45:13 +0300 | [diff] [blame] | 408 | static int me8100_di_io_single_read(me_subdevice_t *subdevice, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 409 | struct file *filep, |
| 410 | int channel, |
| 411 | int *value, int time_out, int flags) |
| 412 | { |
| 413 | me8100_di_subdevice_t *instance; |
| 414 | int err = ME_ERRNO_SUCCESS; |
| 415 | |
| 416 | PDEBUG("executed.\n"); |
| 417 | |
| 418 | instance = (me8100_di_subdevice_t *) subdevice; |
| 419 | |
| 420 | ME_SUBDEVICE_ENTER; |
| 421 | |
| 422 | spin_lock(&instance->subdevice_lock); |
| 423 | |
| 424 | switch (flags) { |
| 425 | |
| 426 | case ME_IO_SINGLE_TYPE_DIO_BIT: |
| 427 | if ((channel >= 0) && (channel < 16)) { |
| 428 | *value = inw(instance->port_reg) & (0x1 << channel); |
| 429 | } else { |
| 430 | PERROR("Invalid bit number specified.\n"); |
| 431 | err = ME_ERRNO_INVALID_CHANNEL; |
| 432 | } |
| 433 | break; |
| 434 | |
| 435 | case ME_IO_SINGLE_TYPE_DIO_BYTE: |
| 436 | if (channel == 0) { |
| 437 | *value = inw(instance->port_reg) & 0xFF; |
| 438 | } else if (channel == 1) { |
| 439 | *value = (inw(instance->port_reg) >> 8) & 0xFF; |
| 440 | } else { |
| 441 | PERROR("Invalid byte number specified.\n"); |
| 442 | err = ME_ERRNO_INVALID_CHANNEL; |
| 443 | } |
| 444 | break; |
| 445 | |
| 446 | case ME_IO_SINGLE_NO_FLAGS: |
| 447 | case ME_IO_SINGLE_TYPE_DIO_WORD: |
| 448 | if (channel == 0) { |
| 449 | *value = inw(instance->port_reg); |
| 450 | } else { |
| 451 | PERROR("Invalid word number specified.\n"); |
| 452 | err = ME_ERRNO_INVALID_CHANNEL; |
| 453 | } |
| 454 | |
| 455 | break; |
| 456 | |
| 457 | default: |
| 458 | PERROR("Invalid flags specified.\n"); |
| 459 | err = ME_ERRNO_INVALID_FLAGS; |
| 460 | } |
| 461 | |
| 462 | spin_unlock(&instance->subdevice_lock); |
| 463 | |
| 464 | ME_SUBDEVICE_EXIT; |
| 465 | |
| 466 | return err; |
| 467 | } |
| 468 | |
Alexander Beregalov | 451084d | 2009-03-16 19:45:13 +0300 | [diff] [blame] | 469 | static int me8100_di_query_number_channels(me_subdevice_t *subdevice, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 470 | int *number) |
| 471 | { |
| 472 | PDEBUG("executed.\n"); |
| 473 | *number = 16; |
| 474 | return ME_ERRNO_SUCCESS; |
| 475 | } |
| 476 | |
Alexander Beregalov | 451084d | 2009-03-16 19:45:13 +0300 | [diff] [blame] | 477 | static int me8100_di_query_subdevice_type(me_subdevice_t *subdevice, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 478 | int *type, int *subtype) |
| 479 | { |
| 480 | PDEBUG("executed.\n"); |
| 481 | *type = ME_TYPE_DI; |
| 482 | *subtype = ME_SUBTYPE_SINGLE; |
| 483 | return ME_ERRNO_SUCCESS; |
| 484 | } |
| 485 | |
Alexander Beregalov | 451084d | 2009-03-16 19:45:13 +0300 | [diff] [blame] | 486 | static int me8100_di_query_subdevice_caps(me_subdevice_t *subdevice, int *caps) |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 487 | { |
| 488 | PDEBUG("executed.\n"); |
| 489 | *caps = ME_CAPS_DIO_BIT_PATTERN_IRQ | ME_CAPS_DIO_BIT_MASK_IRQ_EDGE_ANY; |
| 490 | return ME_ERRNO_SUCCESS; |
| 491 | } |
| 492 | |
| 493 | static void me8100_di_destructor(struct me_subdevice *subdevice) |
| 494 | { |
| 495 | me8100_di_subdevice_t *instance; |
| 496 | |
| 497 | PDEBUG("executed.\n"); |
| 498 | |
| 499 | instance = (me8100_di_subdevice_t *) subdevice; |
| 500 | |
| 501 | free_irq(instance->irq, (void *)instance); |
| 502 | me_subdevice_deinit(&instance->base); |
| 503 | kfree(instance); |
| 504 | } |
| 505 | |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 506 | static irqreturn_t me8100_isr(int irq, void *dev_id) |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 507 | { |
| 508 | me8100_di_subdevice_t *instance; |
| 509 | uint32_t icsr; |
| 510 | |
| 511 | uint16_t irq_status; |
| 512 | uint16_t line_value = 0; |
| 513 | |
| 514 | uint32_t status_val = 0; |
| 515 | |
| 516 | PDEBUG("executed.\n"); |
| 517 | |
| 518 | instance = (me8100_di_subdevice_t *) dev_id; |
| 519 | |
| 520 | if (irq != instance->irq) { |
| 521 | PERROR("Incorrect interrupt num: %d.\n", irq); |
| 522 | return IRQ_NONE; |
| 523 | } |
| 524 | |
| 525 | icsr = inl(instance->irq_status_reg); |
| 526 | if (instance->di_idx == 0) { |
| 527 | |
| 528 | if ((icsr & |
| 529 | (PLX_INTCSR_LOCAL_INT1_STATE | PLX_INTCSR_PCI_INT_EN | |
| 530 | PLX_INTCSR_LOCAL_INT1_EN)) != |
| 531 | (PLX_INTCSR_LOCAL_INT1_STATE | PLX_INTCSR_PCI_INT_EN | |
| 532 | PLX_INTCSR_LOCAL_INT1_EN)) { |
| 533 | PINFO |
| 534 | ("%ld Shared interrupt. %s(): idx=0 plx:irq_status_reg=0x%04X\n", |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 535 | jiffies, __func__, icsr); |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 536 | return IRQ_NONE; |
| 537 | } |
| 538 | } else if (instance->di_idx == 1) { |
| 539 | if ((icsr & |
| 540 | (PLX_INTCSR_LOCAL_INT2_STATE | PLX_INTCSR_PCI_INT_EN | |
| 541 | PLX_INTCSR_LOCAL_INT2_EN)) != |
| 542 | (PLX_INTCSR_LOCAL_INT2_STATE | PLX_INTCSR_PCI_INT_EN | |
| 543 | PLX_INTCSR_LOCAL_INT2_EN)) { |
| 544 | PINFO |
| 545 | ("%ld Shared interrupt. %s(): idx=1 plx:irq_status_reg=0x%04X\n", |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 546 | jiffies, __func__, icsr); |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 547 | return IRQ_NONE; |
| 548 | } |
| 549 | } else { |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 550 | PERROR("%s():Wrong interrupt idx=%d csr=0x%X.\n", __func__, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 551 | instance->di_idx, icsr); |
| 552 | return IRQ_NONE; |
| 553 | } |
| 554 | |
| 555 | PDEBUG("me8100_isr():Interrupt from idx=%d occured.\n", |
| 556 | instance->di_idx); |
| 557 | spin_lock(&instance->subdevice_lock); |
| 558 | inw(instance->irq_reset_reg); |
| 559 | line_value = inw(instance->port_reg); |
| 560 | |
| 561 | irq_status = instance->line_value ^ line_value; |
| 562 | |
| 563 | // Make extended information. |
| 564 | status_val |= (0x00FF & (~(uint16_t) instance->line_value & line_value)) << 16; //Raise |
| 565 | status_val |= (0x00FF & ((uint16_t) instance->line_value & ~line_value)); //Fall |
| 566 | |
| 567 | instance->line_value = line_value; |
| 568 | |
| 569 | if (instance->rised == 0) { |
| 570 | instance->status_value = irq_status; |
| 571 | instance->status_value_edges = status_val; |
| 572 | } else { |
| 573 | instance->status_value |= irq_status; |
| 574 | instance->status_value_edges |= status_val; |
| 575 | } |
| 576 | |
| 577 | if (instance->filtering_flag) { // For compare mode only. |
| 578 | if (instance->compare_value == instance->line_value) { |
| 579 | instance->rised = 1; |
| 580 | instance->irq_count++; |
| 581 | } |
| 582 | } else { |
| 583 | instance->rised = 1; |
| 584 | instance->irq_count++; |
| 585 | } |
| 586 | |
| 587 | spin_unlock(&instance->subdevice_lock); |
| 588 | wake_up_interruptible_all(&instance->wait_queue); |
| 589 | |
| 590 | return IRQ_HANDLED; |
| 591 | } |
| 592 | |
| 593 | me8100_di_subdevice_t *me8100_di_constructor(uint32_t me8100_reg_base, |
| 594 | uint32_t plx_reg_base, |
| 595 | unsigned int di_idx, |
| 596 | int irq, |
Alexander Beregalov | 451084d | 2009-03-16 19:45:13 +0300 | [diff] [blame] | 597 | spinlock_t *ctrl_reg_lock) |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 598 | { |
| 599 | me8100_di_subdevice_t *subdevice; |
| 600 | int err; |
| 601 | |
| 602 | PDEBUG("executed.\n"); |
| 603 | |
| 604 | /* Allocate memory for subdevice instance */ |
| 605 | subdevice = kmalloc(sizeof(me8100_di_subdevice_t), GFP_KERNEL); |
| 606 | |
| 607 | if (!subdevice) { |
| 608 | PERROR("Cannot get memory for subdevice instance.\n"); |
| 609 | return NULL; |
| 610 | } |
| 611 | |
| 612 | memset(subdevice, 0, sizeof(me8100_di_subdevice_t)); |
| 613 | |
| 614 | /* Initialize subdevice base class */ |
| 615 | err = me_subdevice_init(&subdevice->base); |
| 616 | |
| 617 | if (err) { |
| 618 | PERROR("Cannot initialize subdevice base class instance.\n"); |
| 619 | kfree(subdevice); |
| 620 | return NULL; |
| 621 | } |
| 622 | // Initialize spin locks. |
| 623 | spin_lock_init(&subdevice->subdevice_lock); |
| 624 | |
| 625 | subdevice->ctrl_reg_lock = ctrl_reg_lock; |
| 626 | |
| 627 | /* Save the subdevice index. */ |
| 628 | subdevice->di_idx = di_idx; |
| 629 | |
| 630 | /* Initialize wait queue */ |
| 631 | init_waitqueue_head(&subdevice->wait_queue); |
| 632 | |
| 633 | /* Register interrupt service routine. */ |
| 634 | subdevice->irq = irq; |
| 635 | err = request_irq(subdevice->irq, me8100_isr, |
| 636 | #ifdef IRQF_DISABLED |
| 637 | IRQF_DISABLED | IRQF_SHARED, |
| 638 | #else |
| 639 | SA_INTERRUPT | SA_SHIRQ, |
| 640 | #endif |
| 641 | ME8100_NAME, (void *)subdevice); |
| 642 | |
| 643 | if (err) { |
| 644 | PERROR("Cannot initialize subdevice base class instance.\n"); |
| 645 | kfree(subdevice); |
| 646 | return NULL; |
| 647 | } |
| 648 | PINFO("Registered irq=%d.\n", subdevice->irq); |
| 649 | |
| 650 | /* Initialize the registers */ |
| 651 | subdevice->ctrl_reg = |
| 652 | me8100_reg_base + ME8100_CTRL_REG_A + di_idx * ME8100_REG_OFFSET; |
| 653 | subdevice->port_reg = |
| 654 | me8100_reg_base + ME8100_DI_REG_A + di_idx * ME8100_REG_OFFSET; |
| 655 | subdevice->mask_reg = |
| 656 | me8100_reg_base + ME8100_MASK_REG_A + di_idx * ME8100_REG_OFFSET; |
| 657 | subdevice->pattern_reg = |
| 658 | me8100_reg_base + ME8100_PATTERN_REG_A + di_idx * ME8100_REG_OFFSET; |
| 659 | subdevice->din_int_reg = |
| 660 | me8100_reg_base + ME8100_INT_DI_REG_A + di_idx * ME8100_REG_OFFSET; |
| 661 | subdevice->irq_reset_reg = |
| 662 | me8100_reg_base + ME8100_RES_INT_REG_A + di_idx * ME8100_REG_OFFSET; |
| 663 | subdevice->irq_status_reg = plx_reg_base + PLX_INTCSR; |
| 664 | #ifdef MEDEBUG_DEBUG_REG |
| 665 | subdevice->reg_base = me8100_reg_base; |
| 666 | #endif |
| 667 | |
| 668 | /* Overload base class methods. */ |
| 669 | subdevice->base.me_subdevice_io_irq_start = me8100_di_io_irq_start; |
| 670 | subdevice->base.me_subdevice_io_irq_wait = me8100_di_io_irq_wait; |
| 671 | subdevice->base.me_subdevice_io_irq_stop = me8100_di_io_irq_stop; |
| 672 | subdevice->base.me_subdevice_io_reset_subdevice = |
| 673 | me8100_di_io_reset_subdevice; |
| 674 | subdevice->base.me_subdevice_io_single_config = |
| 675 | me8100_di_io_single_config; |
| 676 | subdevice->base.me_subdevice_io_single_read = me8100_di_io_single_read; |
| 677 | subdevice->base.me_subdevice_query_number_channels = |
| 678 | me8100_di_query_number_channels; |
| 679 | subdevice->base.me_subdevice_query_subdevice_type = |
| 680 | me8100_di_query_subdevice_type; |
| 681 | subdevice->base.me_subdevice_query_subdevice_caps = |
| 682 | me8100_di_query_subdevice_caps; |
| 683 | subdevice->base.me_subdevice_destructor = me8100_di_destructor; |
| 684 | |
| 685 | subdevice->rised = 0; |
| 686 | subdevice->irq_count = 0; |
| 687 | |
| 688 | return subdevice; |
| 689 | } |