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