David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1 | /** |
| 2 | * @file me6000_ao.c |
| 3 | * |
| 4 | * @brief ME-6000 analog output 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 | /* Includes |
| 33 | */ |
| 34 | #include <linux/version.h> |
| 35 | #include <linux/module.h> |
| 36 | |
| 37 | #include <linux/slab.h> |
| 38 | #include <linux/spinlock.h> |
| 39 | #include <asm/io.h> |
| 40 | #include <asm/uaccess.h> |
| 41 | #include <linux/types.h> |
| 42 | #include <linux/interrupt.h> |
| 43 | #include <linux/delay.h> |
| 44 | |
| 45 | #include <linux/workqueue.h> |
| 46 | |
| 47 | #include "medefines.h" |
| 48 | #include "meinternal.h" |
| 49 | #include "meerror.h" |
| 50 | |
| 51 | #include "medebug.h" |
| 52 | #include "meids.h" |
| 53 | #include "me6000_reg.h" |
| 54 | #include "me6000_ao_reg.h" |
| 55 | #include "me6000_ao.h" |
| 56 | |
| 57 | /* Defines |
| 58 | */ |
| 59 | |
| 60 | static int me6000_ao_query_range_by_min_max(me_subdevice_t * subdevice, |
| 61 | int unit, |
| 62 | int *min, |
| 63 | int *max, int *maxdata, int *range); |
| 64 | |
| 65 | static int me6000_ao_query_number_ranges(me_subdevice_t * subdevice, |
| 66 | int unit, int *count); |
| 67 | |
| 68 | static int me6000_ao_query_range_info(me_subdevice_t * subdevice, |
| 69 | int range, |
| 70 | int *unit, |
| 71 | int *min, int *max, int *maxdata); |
| 72 | |
| 73 | static int me6000_ao_query_timer(me_subdevice_t * subdevice, |
| 74 | int timer, |
| 75 | int *base_frequency, |
| 76 | long long *min_ticks, long long *max_ticks); |
| 77 | |
| 78 | static int me6000_ao_query_number_channels(me_subdevice_t * subdevice, |
| 79 | int *number); |
| 80 | |
| 81 | static int me6000_ao_query_subdevice_type(me_subdevice_t * subdevice, |
| 82 | int *type, int *subtype); |
| 83 | |
| 84 | static int me6000_ao_query_subdevice_caps(me_subdevice_t * subdevice, |
| 85 | int *caps); |
| 86 | |
| 87 | static int me6000_ao_query_subdevice_caps_args(struct me_subdevice *subdevice, |
| 88 | int cap, int *args, int count); |
| 89 | |
| 90 | /** Remove subdevice. */ |
| 91 | static void me6000_ao_destructor(struct me_subdevice *subdevice); |
| 92 | |
| 93 | /** Reset subdevice. Stop all actions. Reset registry. Disable FIFO. Set output to 0V and status to 'none'. */ |
| 94 | static int me6000_ao_io_reset_subdevice(me_subdevice_t * subdevice, |
| 95 | struct file *filep, int flags); |
| 96 | |
| 97 | /** Set output as single */ |
| 98 | static int me6000_ao_io_single_config(me_subdevice_t * subdevice, |
| 99 | struct file *filep, |
| 100 | int channel, |
| 101 | int single_config, |
| 102 | int ref, |
| 103 | int trig_chan, |
| 104 | int trig_type, int trig_edge, int flags); |
| 105 | |
| 106 | /** Pass to user actual value of output. */ |
| 107 | static int me6000_ao_io_single_read(me_subdevice_t * subdevice, |
| 108 | struct file *filep, |
| 109 | int channel, |
| 110 | int *value, int time_out, int flags); |
| 111 | |
| 112 | /** Write to output requed value. */ |
| 113 | static int me6000_ao_io_single_write(me_subdevice_t * subdevice, |
| 114 | struct file *filep, |
| 115 | int channel, |
| 116 | int value, int time_out, int flags); |
| 117 | |
| 118 | /** Set output as streamed device. */ |
| 119 | static int me6000_ao_io_stream_config(me_subdevice_t * subdevice, |
| 120 | struct file *filep, |
| 121 | meIOStreamConfig_t * config_list, |
| 122 | int count, |
| 123 | meIOStreamTrigger_t * trigger, |
| 124 | int fifo_irq_threshold, int flags); |
| 125 | |
| 126 | /** Wait for / Check empty space in buffer. */ |
| 127 | static int me6000_ao_io_stream_new_values(me_subdevice_t * subdevice, |
| 128 | struct file *filep, |
| 129 | int time_out, int *count, int flags); |
| 130 | |
| 131 | /** Start streaming. */ |
| 132 | static int me6000_ao_io_stream_start(me_subdevice_t * subdevice, |
| 133 | struct file *filep, |
| 134 | int start_mode, int time_out, int flags); |
| 135 | |
| 136 | /** Check actual state. / Wait for end. */ |
| 137 | static int me6000_ao_io_stream_status(me_subdevice_t * subdevice, |
| 138 | struct file *filep, |
| 139 | int wait, |
| 140 | int *status, int *values, int flags); |
| 141 | |
| 142 | /** Stop streaming. */ |
| 143 | static int me6000_ao_io_stream_stop(me_subdevice_t * subdevice, |
| 144 | struct file *filep, |
| 145 | int stop_mode, int flags); |
| 146 | |
| 147 | /** Write datas to buffor. */ |
| 148 | static int me6000_ao_io_stream_write(me_subdevice_t * subdevice, |
| 149 | struct file *filep, |
| 150 | int write_mode, |
| 151 | int *values, int *count, int flags); |
| 152 | |
| 153 | /** Interrupt handler. Copy from buffer to FIFO. */ |
| 154 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19) |
| 155 | static irqreturn_t me6000_ao_isr(int irq, void *dev_id); |
| 156 | #else |
| 157 | static irqreturn_t me6000_ao_isr(int irq, void *dev_id, struct pt_regs *regs); |
| 158 | #endif |
| 159 | |
| 160 | /** Copy data from circular buffer to fifo (fast) in wraparound mode. */ |
| 161 | int inline ao_write_data_wraparound(me6000_ao_subdevice_t * instance, int count, |
| 162 | int start_pos); |
| 163 | |
| 164 | /** Copy data from circular buffer to fifo (fast).*/ |
| 165 | int inline ao_write_data(me6000_ao_subdevice_t * instance, int count, |
| 166 | int start_pos); |
| 167 | |
| 168 | /** Copy data from circular buffer to fifo (slow).*/ |
| 169 | int inline ao_write_data_pooling(me6000_ao_subdevice_t * instance, int count, |
| 170 | int start_pos); |
| 171 | |
| 172 | /** Copy data from user space to circular buffer. */ |
| 173 | int inline ao_get_data_from_user(me6000_ao_subdevice_t * instance, int count, |
| 174 | int *user_values); |
| 175 | |
| 176 | /** Stop presentation. Preserve FIFOs. */ |
| 177 | int inline ao_stop_immediately(me6000_ao_subdevice_t * instance); |
| 178 | |
| 179 | /** Function for checking timeout in non-blocking mode. */ |
| 180 | #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) |
| 181 | static void me6000_ao_work_control_task(void *subdevice); |
| 182 | #else |
| 183 | static void me6000_ao_work_control_task(struct work_struct *work); |
| 184 | #endif |
| 185 | |
| 186 | /* Functions |
| 187 | */ |
| 188 | |
| 189 | static int me6000_ao_io_reset_subdevice(me_subdevice_t * subdevice, |
| 190 | struct file *filep, int flags) |
| 191 | { |
| 192 | me6000_ao_subdevice_t *instance; |
| 193 | int err = ME_ERRNO_SUCCESS; |
| 194 | uint32_t tmp; |
| 195 | uint32_t ctrl; |
| 196 | |
| 197 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 198 | |
| 199 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 200 | |
| 201 | if (flags) { |
| 202 | PERROR("Invalid flag specified.\n"); |
| 203 | return ME_ERRNO_INVALID_FLAGS; |
| 204 | } |
| 205 | |
| 206 | ME_SUBDEVICE_ENTER; |
| 207 | |
| 208 | instance->status = ao_status_none; |
| 209 | instance->ao_control_task_flag = 0; |
| 210 | cancel_delayed_work(&instance->ao_control_task); |
| 211 | instance->timeout.delay = 0; |
| 212 | instance->timeout.start_time = jiffies; |
| 213 | |
| 214 | //Stop state machine. |
| 215 | err = ao_stop_immediately(instance); |
| 216 | |
| 217 | //Remove from synchronous start. |
| 218 | spin_lock(instance->preload_reg_lock); |
| 219 | tmp = inl(instance->preload_reg); |
| 220 | tmp &= |
| 221 | ~((ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << instance-> |
| 222 | ao_idx); |
| 223 | outl(tmp, instance->preload_reg); |
| 224 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 225 | instance->preload_reg - instance->reg_base, tmp); |
| 226 | *instance->preload_flags &= |
| 227 | ~((ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << instance-> |
| 228 | ao_idx); |
| 229 | |
| 230 | //Reset triggering flag |
| 231 | *instance->triggering_flags &= ~(0x1 << instance->ao_idx); |
| 232 | spin_unlock(instance->preload_reg_lock); |
| 233 | |
| 234 | if (instance->fifo) { |
| 235 | //Set single mode, dissable FIFO, dissable external trigger, block interrupt. |
| 236 | ctrl = ME6000_AO_MODE_SINGLE; |
| 237 | |
| 238 | //Block ISM. |
| 239 | ctrl |= |
| 240 | (ME6000_AO_CTRL_BIT_STOP | |
| 241 | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP); |
| 242 | |
| 243 | outl(ctrl, instance->ctrl_reg); |
| 244 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 245 | instance->reg_base, |
| 246 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 247 | //Set speed |
| 248 | outl(ME6000_AO_MIN_CHAN_TICKS - 1, instance->timer_reg); |
| 249 | //Reset interrupt latch |
| 250 | inl(instance->irq_reset_reg); |
| 251 | } |
| 252 | |
| 253 | instance->hardware_stop_delay = HZ / 10; //100ms |
| 254 | |
| 255 | //Set output to 0V |
| 256 | outl(0x8000, instance->single_reg); |
| 257 | PDEBUG_REG("single_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 258 | instance->single_reg - instance->reg_base, 0x8000); |
| 259 | |
| 260 | instance->circ_buf.head = 0; |
| 261 | instance->circ_buf.tail = 0; |
| 262 | instance->preloaded_count = 0; |
| 263 | instance->data_count = 0; |
| 264 | instance->single_value = 0x8000; |
| 265 | instance->single_value_in_fifo = 0x8000; |
| 266 | |
| 267 | //Set status to signal that device is unconfigured. |
| 268 | instance->status = ao_status_none; |
| 269 | //Signal reset if user is on wait. |
| 270 | wake_up_interruptible_all(&instance->wait_queue); |
| 271 | |
| 272 | ME_SUBDEVICE_EXIT; |
| 273 | |
| 274 | return err; |
| 275 | } |
| 276 | |
| 277 | static int me6000_ao_io_single_config(me_subdevice_t * subdevice, |
| 278 | struct file *filep, |
| 279 | int channel, |
| 280 | int single_config, |
| 281 | int ref, |
| 282 | int trig_chan, |
| 283 | int trig_type, int trig_edge, int flags) |
| 284 | { |
| 285 | me6000_ao_subdevice_t *instance; |
| 286 | int err = ME_ERRNO_SUCCESS; |
| 287 | uint32_t ctrl; |
| 288 | uint32_t sync; |
| 289 | unsigned long cpu_flags; |
| 290 | |
| 291 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 292 | |
| 293 | PDEBUG("executed. ID=%d\n", instance->ao_idx); |
| 294 | |
| 295 | // Checking parameters |
| 296 | if (flags) { |
| 297 | PERROR |
| 298 | ("Invalid flag specified. Must be ME_IO_SINGLE_CONFIG_NO_FLAGS.\n"); |
| 299 | return ME_ERRNO_INVALID_FLAGS; |
| 300 | } |
| 301 | |
| 302 | if (instance->fifo) { //Stream hardware (with or without fifo) |
| 303 | if ((trig_edge == ME_TRIG_TYPE_SW) |
| 304 | && (trig_edge != ME_TRIG_EDGE_NONE)) { |
| 305 | PERROR |
| 306 | ("Invalid trigger edge. Software trigger has not edge.\n"); |
| 307 | return ME_ERRNO_INVALID_TRIG_EDGE; |
| 308 | } |
| 309 | |
| 310 | if (trig_type == ME_TRIG_TYPE_EXT_DIGITAL) { |
| 311 | switch (trig_edge) { |
| 312 | case ME_TRIG_EDGE_ANY: |
| 313 | case ME_TRIG_EDGE_RISING: |
| 314 | case ME_TRIG_EDGE_FALLING: |
| 315 | break; |
| 316 | |
| 317 | default: |
| 318 | PERROR("Invalid trigger edge.\n"); |
| 319 | return ME_ERRNO_INVALID_TRIG_EDGE; |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | if ((trig_type != ME_TRIG_TYPE_SW) |
| 324 | && (trig_type != ME_TRIG_TYPE_EXT_DIGITAL)) { |
| 325 | PERROR |
| 326 | ("Invalid trigger type. Trigger must be software or digital.\n"); |
| 327 | return ME_ERRNO_INVALID_TRIG_TYPE; |
| 328 | } |
| 329 | } else { //Single |
| 330 | if (trig_edge != ME_TRIG_EDGE_NONE) { |
| 331 | PERROR |
| 332 | ("Invalid trigger edge. Single output trigger hasn't own edge.\n"); |
| 333 | return ME_ERRNO_INVALID_TRIG_EDGE; |
| 334 | } |
| 335 | |
| 336 | if (trig_type != ME_TRIG_TYPE_SW) { |
| 337 | PERROR |
| 338 | ("Invalid trigger type. Trigger must be software.\n"); |
| 339 | return ME_ERRNO_INVALID_TRIG_TYPE; |
| 340 | } |
| 341 | |
| 342 | } |
| 343 | |
| 344 | if ((trig_chan != ME_TRIG_CHAN_DEFAULT) |
| 345 | && (trig_chan != ME_TRIG_CHAN_SYNCHRONOUS)) { |
| 346 | PERROR("Invalid trigger channel specified.\n"); |
| 347 | return ME_ERRNO_INVALID_TRIG_CHAN; |
| 348 | } |
| 349 | /* |
| 350 | if ((trig_type == ME_TRIG_TYPE_EXT_DIGITAL) && (trig_chan != ME_TRIG_CHAN_SYNCHRONOUS)) |
| 351 | { |
| 352 | PERROR("Invalid trigger channel specified. Must be synchronous when digital is choose.\n"); |
| 353 | return ME_ERRNO_INVALID_TRIG_CHAN; |
| 354 | } |
| 355 | */ |
| 356 | if (ref != ME_REF_AO_GROUND) { |
| 357 | PERROR |
| 358 | ("Invalid reference. Analog outputs have to have got REF_AO_GROUND.\n"); |
| 359 | return ME_ERRNO_INVALID_REF; |
| 360 | } |
| 361 | |
| 362 | if (single_config != 0) { |
| 363 | PERROR |
| 364 | ("Invalid single config specified. Only one range for anlog outputs is available.\n"); |
| 365 | return ME_ERRNO_INVALID_SINGLE_CONFIG; |
| 366 | } |
| 367 | |
| 368 | if (channel != 0) { |
| 369 | PERROR |
| 370 | ("Invalid channel number specified. Analog output have only one channel.\n"); |
| 371 | return ME_ERRNO_INVALID_CHANNEL; |
| 372 | } |
| 373 | |
| 374 | ME_SUBDEVICE_ENTER; |
| 375 | |
| 376 | //Subdevice running in stream mode! |
| 377 | if ((instance->status >= ao_status_stream_run_wait) |
| 378 | && (instance->status < ao_status_stream_end)) { |
| 379 | PERROR("Subdevice is busy.\n"); |
| 380 | ME_SUBDEVICE_EXIT; |
| 381 | |
| 382 | return ME_ERRNO_SUBDEVICE_BUSY; |
| 383 | } |
| 384 | /// @note For single all calls (config and write) are erasing previous state! |
| 385 | |
| 386 | instance->status = ao_status_none; |
| 387 | |
| 388 | // Correct single mirrors |
| 389 | instance->single_value_in_fifo = instance->single_value; |
| 390 | |
| 391 | //Stop device |
| 392 | err = ao_stop_immediately(instance); |
| 393 | if (err) { |
| 394 | PERROR_CRITICAL("FSM IS BUSY!\n"); |
| 395 | ME_SUBDEVICE_EXIT; |
| 396 | |
| 397 | return ME_ERRNO_SUBDEVICE_BUSY; |
| 398 | } |
| 399 | |
| 400 | if (instance->fifo) { // Set control register. |
| 401 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 402 | // Set stop bit. Stop streaming mode (If running.). |
| 403 | ctrl = inl(instance->ctrl_reg); |
| 404 | //Reset all bits. |
| 405 | ctrl = |
| 406 | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP | ME6000_AO_CTRL_BIT_STOP; |
| 407 | if (trig_type == ME_TRIG_TYPE_EXT_DIGITAL) { |
| 408 | PINFO("External digital trigger.\n"); |
| 409 | |
| 410 | if (trig_edge == ME_TRIG_EDGE_ANY) { |
| 411 | // ctrl |= ME6000_AO_CTRL_BIT_EX_TRIG_EDGE | ME6000_AO_CTRL_BIT_EX_TRIG_EDGE_BOTH; |
| 412 | instance->ctrl_trg = |
| 413 | ME6000_AO_CTRL_BIT_EX_TRIG_EDGE | |
| 414 | ME6000_AO_CTRL_BIT_EX_TRIG_EDGE_BOTH; |
| 415 | } else if (trig_edge == ME_TRIG_EDGE_FALLING) { |
| 416 | // ctrl |= ME6000_AO_CTRL_BIT_EX_TRIG_EDGE; |
| 417 | instance->ctrl_trg = |
| 418 | ME6000_AO_CTRL_BIT_EX_TRIG_EDGE; |
| 419 | } else if (trig_edge == ME_TRIG_EDGE_RISING) { |
| 420 | instance->ctrl_trg = 0x0; |
| 421 | } |
| 422 | } else if (trig_type == ME_TRIG_TYPE_SW) { |
| 423 | PDEBUG("SOFTWARE TRIGGER\n"); |
| 424 | instance->ctrl_trg = 0x0; |
| 425 | } |
| 426 | outl(ctrl, instance->ctrl_reg); |
| 427 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 428 | instance->reg_base, |
| 429 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 430 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 431 | } else { |
| 432 | PDEBUG("SOFTWARE TRIGGER\n"); |
| 433 | } |
| 434 | |
| 435 | // Set preload/synchronization register. |
| 436 | spin_lock(instance->preload_reg_lock); |
| 437 | |
| 438 | if (trig_type == ME_TRIG_TYPE_SW) { |
| 439 | *instance->preload_flags &= |
| 440 | ~(ME6000_AO_SYNC_EXT_TRIG << instance->ao_idx); |
| 441 | } else //if (trig_type == ME_TRIG_TYPE_EXT_DIGITAL) |
| 442 | { |
| 443 | *instance->preload_flags |= |
| 444 | ME6000_AO_SYNC_EXT_TRIG << instance->ao_idx; |
| 445 | } |
| 446 | |
| 447 | if (trig_chan == ME_TRIG_CHAN_DEFAULT) { |
| 448 | *instance->preload_flags &= |
| 449 | ~(ME6000_AO_SYNC_HOLD << instance->ao_idx); |
| 450 | } else //if (trig_chan == ME_TRIG_CHAN_SYNCHRONOUS) |
| 451 | { |
| 452 | *instance->preload_flags |= |
| 453 | ME6000_AO_SYNC_HOLD << instance->ao_idx; |
| 454 | } |
| 455 | |
| 456 | //Reset hardware register |
| 457 | sync = inl(instance->preload_reg); |
| 458 | PDEBUG_REG("preload_reg inl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 459 | instance->preload_reg - instance->reg_base, sync); |
| 460 | sync &= ~(ME6000_AO_SYNC_EXT_TRIG << instance->ao_idx); |
| 461 | sync |= ME6000_AO_SYNC_HOLD << instance->ao_idx; |
| 462 | |
| 463 | //Output configured in default mode (safe one) |
| 464 | outl(sync, instance->preload_reg); |
| 465 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 466 | instance->preload_reg - instance->reg_base, sync); |
| 467 | spin_unlock(instance->preload_reg_lock); |
| 468 | |
| 469 | instance->status = ao_status_single_configured; |
| 470 | |
| 471 | ME_SUBDEVICE_EXIT; |
| 472 | |
| 473 | return err; |
| 474 | } |
| 475 | |
| 476 | static int me6000_ao_io_single_read(me_subdevice_t * subdevice, |
| 477 | struct file *filep, |
| 478 | int channel, |
| 479 | int *value, int time_out, int flags) |
| 480 | { |
| 481 | me6000_ao_subdevice_t *instance; |
| 482 | int err = ME_ERRNO_SUCCESS; |
| 483 | |
| 484 | unsigned long j; |
| 485 | unsigned long delay = 0; |
| 486 | |
| 487 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 488 | |
| 489 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 490 | |
| 491 | if (flags & ~ME_IO_SINGLE_NONBLOCKING) { |
| 492 | PERROR("Invalid flag specified. %d\n", flags); |
| 493 | return ME_ERRNO_INVALID_FLAGS; |
| 494 | } |
| 495 | |
| 496 | if ((instance->status >= ao_status_stream_configured) |
| 497 | && (instance->status <= ao_status_stream_end)) { |
| 498 | PERROR("Subdevice not configured to work in single mode!\n"); |
| 499 | return ME_ERRNO_PREVIOUS_CONFIG; |
| 500 | } |
| 501 | |
| 502 | if (channel != 0) { |
| 503 | PERROR("Invalid channel number specified.\n"); |
| 504 | return ME_ERRNO_INVALID_CHANNEL; |
| 505 | } |
| 506 | |
| 507 | if (time_out < 0) { |
| 508 | PERROR("Invalid timeout specified.\n"); |
| 509 | return ME_ERRNO_INVALID_TIMEOUT; |
| 510 | } |
| 511 | |
| 512 | ME_SUBDEVICE_ENTER; |
| 513 | if ((!flags) && (instance->status == ao_status_single_run_wait)) { //Blocking mode. Wait for trigger. |
| 514 | if (time_out) { |
| 515 | delay = (time_out * HZ) / 1000; |
| 516 | if (delay == 0) |
| 517 | delay = 1; |
| 518 | } |
| 519 | |
| 520 | j = jiffies; |
| 521 | |
| 522 | //Only runing process will interrupt this call. Events are signaled when status change. This procedure has own timeout. |
| 523 | wait_event_interruptible_timeout(instance->wait_queue, |
| 524 | (instance->status != |
| 525 | ao_status_single_run_wait), |
| 526 | (delay) ? delay : LONG_MAX); |
| 527 | |
| 528 | if (instance->status == ao_status_none) { |
| 529 | PDEBUG("Single canceled.\n"); |
| 530 | err = ME_ERRNO_CANCELLED; |
| 531 | } |
| 532 | |
| 533 | if (signal_pending(current)) { |
| 534 | PERROR("Wait on start of state machine interrupted.\n"); |
| 535 | instance->status = ao_status_none; |
| 536 | ao_stop_immediately(instance); |
| 537 | err = ME_ERRNO_SIGNAL; |
| 538 | } |
| 539 | |
| 540 | if ((delay) && ((jiffies - j) >= delay)) { |
| 541 | PDEBUG("Timeout reached.\n"); |
| 542 | err = ME_ERRNO_TIMEOUT; |
| 543 | } |
| 544 | |
| 545 | *value = |
| 546 | (!err) ? instance->single_value_in_fifo : instance-> |
| 547 | single_value; |
| 548 | } else { //Non-blocking mode |
| 549 | //Read value |
| 550 | *value = instance->single_value; |
| 551 | } |
| 552 | |
| 553 | ME_SUBDEVICE_EXIT; |
| 554 | |
| 555 | return err; |
| 556 | } |
| 557 | |
| 558 | static int me6000_ao_io_single_write(me_subdevice_t * subdevice, |
| 559 | struct file *filep, |
| 560 | int channel, |
| 561 | int value, int time_out, int flags) |
| 562 | { |
| 563 | me6000_ao_subdevice_t *instance; |
| 564 | int err = ME_ERRNO_SUCCESS; |
| 565 | unsigned long cpu_flags; |
| 566 | unsigned long j; |
| 567 | unsigned long delay = 0; |
| 568 | |
| 569 | uint32_t sync_mask; |
| 570 | uint32_t mode; |
| 571 | |
| 572 | uint32_t tmp; |
| 573 | |
| 574 | /// Workaround for mix-mode - begin |
| 575 | uint32_t ctrl = 0x0; |
| 576 | uint32_t status; |
| 577 | /// Workaround for mix-mode - end |
| 578 | |
| 579 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 580 | |
| 581 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 582 | |
| 583 | if (flags & |
| 584 | ~(ME_IO_SINGLE_TYPE_TRIG_SYNCHRONOUS | |
| 585 | ME_IO_SINGLE_TYPE_WRITE_NONBLOCKING)) { |
| 586 | PERROR("Invalid flag specified.\n"); |
| 587 | return ME_ERRNO_INVALID_FLAGS; |
| 588 | } |
| 589 | |
| 590 | if ((instance->status == ao_status_none) |
| 591 | || (instance->status > ao_status_single_end)) { |
| 592 | PERROR("Subdevice not configured to work in single mode!\n"); |
| 593 | return ME_ERRNO_PREVIOUS_CONFIG; |
| 594 | } |
| 595 | |
| 596 | if (channel != 0) { |
| 597 | PERROR("Invalid channel number specified.\n"); |
| 598 | return ME_ERRNO_INVALID_CHANNEL; |
| 599 | } |
| 600 | |
| 601 | if (value & ~ME6000_AO_MAX_DATA) { |
| 602 | PERROR("Invalid value provided.\n"); |
| 603 | return ME_ERRNO_VALUE_OUT_OF_RANGE; |
| 604 | } |
| 605 | |
| 606 | if (time_out < 0) { |
| 607 | PERROR("Invalid timeout specified.\n"); |
| 608 | return ME_ERRNO_INVALID_TIMEOUT; |
| 609 | } |
| 610 | |
| 611 | ME_SUBDEVICE_ENTER; |
| 612 | |
| 613 | /// @note For single all calls (config and write) are erasing previous state! |
| 614 | |
| 615 | //Cancel control task |
| 616 | PDEBUG("Cancel control task. idx=%d\n", instance->ao_idx); |
| 617 | instance->ao_control_task_flag = 0; |
| 618 | cancel_delayed_work(&instance->ao_control_task); |
| 619 | |
| 620 | // Correct single mirrors |
| 621 | instance->single_value_in_fifo = instance->single_value; |
| 622 | |
| 623 | //Stop device |
| 624 | err = ao_stop_immediately(instance); |
| 625 | if (err) { |
| 626 | PERROR_CRITICAL("FSM IS BUSY!\n"); |
| 627 | ME_SUBDEVICE_EXIT; |
| 628 | |
| 629 | return ME_ERRNO_SUBDEVICE_BUSY; |
| 630 | } |
| 631 | |
| 632 | if (time_out) { |
| 633 | delay = (time_out * HZ) / 1000; |
| 634 | |
| 635 | if (delay == 0) |
| 636 | delay = 1; |
| 637 | } |
| 638 | |
| 639 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 640 | |
| 641 | instance->single_value_in_fifo = value; |
| 642 | |
| 643 | if (instance->fifo) { |
| 644 | ctrl = inl(instance->ctrl_reg); |
| 645 | } |
| 646 | |
| 647 | if (instance->fifo & ME6000_AO_HAS_FIFO) { /// Workaround for mix-mode - begin |
| 648 | //Set speed |
| 649 | outl(ME6000_AO_MIN_CHAN_TICKS - 1, instance->timer_reg); |
| 650 | PDEBUG_REG("timer_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 651 | instance->reg_base, |
| 652 | instance->timer_reg - instance->reg_base, |
| 653 | (int)ME6000_AO_MIN_CHAN_TICKS); |
| 654 | instance->hardware_stop_delay = HZ / 10; //100ms |
| 655 | |
| 656 | status = inl(instance->status_reg); |
| 657 | |
| 658 | //Set the continous mode. |
| 659 | ctrl &= ~ME6000_AO_CTRL_MODE_MASK; |
| 660 | ctrl |= ME6000_AO_MODE_CONTINUOUS; |
| 661 | |
| 662 | //Prepare FIFO |
| 663 | if (!(ctrl & ME6000_AO_CTRL_BIT_ENABLE_FIFO)) { //FIFO wasn't enabeled. Do it. |
| 664 | PINFO("Enableing FIFO.\n"); |
| 665 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 666 | ctrl |= ME6000_AO_CTRL_BIT_ENABLE_FIFO; |
| 667 | } else { //Check if FIFO is empty |
| 668 | if (status & ME6000_AO_STATUS_BIT_EF) { //FIFO not empty |
| 669 | PINFO("Reseting FIFO.\n"); |
| 670 | ctrl &= |
| 671 | ~(ME6000_AO_CTRL_BIT_ENABLE_FIFO | |
| 672 | ME6000_AO_CTRL_BIT_ENABLE_IRQ); |
| 673 | outl(ctrl, instance->ctrl_reg); |
| 674 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 675 | instance->reg_base, |
| 676 | instance->ctrl_reg - |
| 677 | instance->reg_base, ctrl); |
| 678 | |
| 679 | ctrl |= ME6000_AO_CTRL_BIT_ENABLE_FIFO; |
| 680 | } else { //FIFO empty, only interrupt needs to be disabled! |
| 681 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 682 | } |
| 683 | } |
| 684 | |
| 685 | outl(ctrl, instance->ctrl_reg); |
| 686 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 687 | instance->reg_base, |
| 688 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 689 | |
| 690 | //Reset interrupt latch |
| 691 | inl(instance->irq_reset_reg); |
| 692 | |
| 693 | //Write output - 1 value to FIFO |
| 694 | if (instance->ao_idx & 0x1) { |
| 695 | outl(value <<= 16, instance->fifo_reg); |
| 696 | PDEBUG_REG("fifo_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 697 | instance->reg_base, |
| 698 | instance->fifo_reg - instance->reg_base, |
| 699 | value <<= 16); |
| 700 | } else { |
| 701 | outl(value, instance->fifo_reg); |
| 702 | PDEBUG_REG("fifo_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 703 | instance->reg_base, |
| 704 | instance->fifo_reg - instance->reg_base, |
| 705 | value); |
| 706 | } |
| 707 | /// Workaround for mix-mode - end |
| 708 | } else { //No FIFO - always in single mode |
| 709 | //Write value |
| 710 | PDEBUG("Write value\n"); |
| 711 | outl(value, instance->single_reg); |
| 712 | PDEBUG_REG("single_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 713 | instance->reg_base, |
| 714 | instance->single_reg - instance->reg_base, value); |
| 715 | } |
| 716 | |
| 717 | mode = *instance->preload_flags >> instance->ao_idx; |
| 718 | mode &= (ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG); |
| 719 | |
| 720 | PINFO("Triggering mode: 0x%08x\n", mode); |
| 721 | |
| 722 | spin_lock(instance->preload_reg_lock); |
| 723 | sync_mask = inl(instance->preload_reg); |
| 724 | PDEBUG_REG("preload_reg inl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 725 | instance->preload_reg - instance->reg_base, sync_mask); |
| 726 | switch (mode) { |
| 727 | case 0: //0x00000000: Individual software |
| 728 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_EX_TRIG; |
| 729 | |
| 730 | if (instance->fifo & ME6000_AO_HAS_FIFO) { // FIFO - Continous mode |
| 731 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_EX_TRIG; |
| 732 | if ((sync_mask & ((ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << instance->ao_idx)) != 0x0) { //Now we can set correct mode. |
| 733 | sync_mask &= |
| 734 | ~((ME6000_AO_SYNC_EXT_TRIG | |
| 735 | ME6000_AO_SYNC_HOLD) << instance-> |
| 736 | ao_idx); |
| 737 | |
| 738 | outl(sync_mask, instance->preload_reg); |
| 739 | PDEBUG_REG |
| 740 | ("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 741 | instance->reg_base, |
| 742 | instance->preload_reg - instance->reg_base, |
| 743 | sync_mask); |
| 744 | } |
| 745 | } else { // No FIFO - Single mode: In this case resetting 'ME6000_AO_SYNC_HOLD' will trigger output. |
| 746 | if ((sync_mask & ((ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << instance->ao_idx)) != ME6000_AO_SYNC_HOLD) { //Now we can set correct mode. This is exception. It is set to synchronous and triggered later. |
| 747 | sync_mask &= |
| 748 | ~(ME6000_AO_SYNC_EXT_TRIG << instance-> |
| 749 | ao_idx); |
| 750 | sync_mask |= |
| 751 | ME6000_AO_SYNC_HOLD << instance->ao_idx; |
| 752 | |
| 753 | outl(sync_mask, instance->preload_reg); |
| 754 | PDEBUG_REG |
| 755 | ("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 756 | instance->reg_base, |
| 757 | instance->preload_reg - instance->reg_base, |
| 758 | sync_mask); |
| 759 | } |
| 760 | } |
| 761 | instance->single_value = value; |
| 762 | break; |
| 763 | |
| 764 | case ME6000_AO_SYNC_EXT_TRIG: //0x00010000: Individual hardware |
| 765 | PDEBUG("DIGITAL TRIGGER\n"); |
| 766 | ctrl |= ME6000_AO_CTRL_BIT_ENABLE_EX_TRIG; |
| 767 | |
| 768 | if (instance->fifo & ME6000_AO_HAS_FIFO) { // FIFO - Continous mode |
| 769 | if ((sync_mask & ((ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << instance->ao_idx)) != 0x0) { //Now we can set correct mode. |
| 770 | sync_mask &= |
| 771 | ~((ME6000_AO_SYNC_EXT_TRIG | |
| 772 | ME6000_AO_SYNC_HOLD) << instance-> |
| 773 | ao_idx); |
| 774 | |
| 775 | outl(sync_mask, instance->preload_reg); |
| 776 | PDEBUG_REG |
| 777 | ("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 778 | instance->reg_base, |
| 779 | instance->preload_reg - instance->reg_base, |
| 780 | sync_mask); |
| 781 | } |
| 782 | } else { // No FIFO - Single mode |
| 783 | if ((sync_mask & |
| 784 | ((ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << |
| 785 | instance->ao_idx)) != ME6000_AO_SYNC_HOLD) { |
| 786 | //Now we can set correct mode |
| 787 | sync_mask &= |
| 788 | ~(ME6000_AO_SYNC_EXT_TRIG << instance-> |
| 789 | ao_idx); |
| 790 | sync_mask |= |
| 791 | ME6000_AO_SYNC_HOLD << instance->ao_idx; |
| 792 | |
| 793 | outl(sync_mask, instance->preload_reg); |
| 794 | PDEBUG_REG |
| 795 | ("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 796 | instance->reg_base, |
| 797 | instance->preload_reg - instance->reg_base, |
| 798 | sync_mask); |
| 799 | } |
| 800 | } |
| 801 | break; |
| 802 | |
| 803 | case ME6000_AO_SYNC_HOLD: //0x00000001: Synchronous software |
| 804 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_EX_TRIG; |
| 805 | |
| 806 | if ((sync_mask & |
| 807 | ((ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << |
| 808 | instance->ao_idx)) != |
| 809 | (ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG)) { |
| 810 | //Now we can set correct mode |
| 811 | sync_mask |= |
| 812 | ME6000_AO_SYNC_EXT_TRIG << instance->ao_idx; |
| 813 | sync_mask |= ME6000_AO_SYNC_HOLD << instance->ao_idx; |
| 814 | outl(sync_mask, instance->preload_reg); |
| 815 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 816 | instance->reg_base, |
| 817 | instance->preload_reg - instance->reg_base, |
| 818 | sync_mask); |
| 819 | } |
| 820 | //Set triggering flag |
| 821 | *instance->triggering_flags |= 0x1 << instance->ao_idx; |
| 822 | break; |
| 823 | |
| 824 | case (ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG): //0x00010001: Synchronous hardware |
| 825 | PDEBUG("DIGITAL TRIGGER\n"); |
| 826 | ctrl |= ME6000_AO_CTRL_BIT_ENABLE_EX_TRIG; |
| 827 | |
| 828 | if ((sync_mask & |
| 829 | ((ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << |
| 830 | instance->ao_idx)) != |
| 831 | (ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG)) { |
| 832 | //Now we can set correct mode |
| 833 | sync_mask |= |
| 834 | (ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << |
| 835 | instance->ao_idx; |
| 836 | outl(sync_mask, instance->preload_reg); |
| 837 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 838 | instance->reg_base, |
| 839 | instance->preload_reg - instance->reg_base, |
| 840 | sync_mask); |
| 841 | } |
| 842 | //Set triggering flag |
| 843 | *instance->triggering_flags |= 0x1 << instance->ao_idx; |
| 844 | break; |
| 845 | } |
| 846 | // spin_unlock(instance->preload_reg_lock); // Moved down. |
| 847 | |
| 848 | if (instance->fifo) { //Activate ISM (remove 'stop' bits) |
| 849 | ctrl &= |
| 850 | ~(ME6000_AO_CTRL_BIT_EX_TRIG_EDGE | |
| 851 | ME6000_AO_CTRL_BIT_EX_TRIG_EDGE_BOTH); |
| 852 | ctrl |= instance->ctrl_trg; |
| 853 | ctrl &= |
| 854 | ~(ME6000_AO_CTRL_BIT_STOP | |
| 855 | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP); |
| 856 | |
| 857 | outl(ctrl, instance->ctrl_reg); |
| 858 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 859 | instance->reg_base, |
| 860 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 861 | } |
| 862 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 863 | |
| 864 | /// @note When flag 'ME_IO_SINGLE_TYPE_TRIG_SYNCHRONOUS' is set than output is triggered. ALWAYS! |
| 865 | |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 866 | PINFO("<%s> start mode= 0x%08x %s\n", __func__, mode, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 867 | (flags & ME_IO_SINGLE_TYPE_TRIG_SYNCHRONOUS) ? "SYNCHRONOUS" : |
| 868 | ""); |
| 869 | if (instance->fifo & ME6000_AO_HAS_FIFO) { // FIFO - Continous mode |
| 870 | if (flags & ME_IO_SINGLE_TYPE_TRIG_SYNCHRONOUS) { //Trigger outputs |
| 871 | //Add channel to start list |
| 872 | outl(sync_mask | |
| 873 | (ME6000_AO_SYNC_HOLD << instance->ao_idx), |
| 874 | instance->preload_reg); |
| 875 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 876 | instance->reg_base, |
| 877 | instance->preload_reg - instance->reg_base, |
| 878 | sync_mask | (ME6000_AO_SYNC_HOLD << |
| 879 | instance->ao_idx)); |
| 880 | |
| 881 | //Fire |
| 882 | PINFO |
| 883 | ("Fired all software synchronous outputs by software trigger.\n"); |
| 884 | outl(0x8000, instance->single_reg); |
| 885 | PDEBUG_REG("single_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 886 | instance->reg_base, |
| 887 | instance->single_reg - instance->reg_base, |
| 888 | 0x8000); |
| 889 | |
| 890 | //Restore save settings |
| 891 | outl(sync_mask, instance->preload_reg); |
| 892 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 893 | instance->reg_base, |
| 894 | instance->preload_reg - instance->reg_base, |
| 895 | sync_mask); |
| 896 | |
| 897 | } else if (!mode) { //Trigger outputs |
| 898 | /* //Remove channel from start list |
| 899 | outl(sync_mask & ~(ME6000_AO_SYNC_HOLD << instance->ao_idx), instance->preload_reg); |
| 900 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, instance->preload_reg - instance->reg_base, sync_mask & ~(ME6000_AO_SYNC_HOLD << instance->ao_idx)); |
| 901 | */ |
| 902 | //Fire |
| 903 | PINFO("Software trigger.\n"); |
| 904 | outl(0x8000, instance->single_reg); |
| 905 | PDEBUG_REG("single_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 906 | instance->reg_base, |
| 907 | instance->single_reg - instance->reg_base, |
| 908 | 0x8000); |
| 909 | |
| 910 | /* //Restore save settings |
| 911 | outl(sync_mask, instance->preload_reg); |
| 912 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, instance->preload_reg - instance->reg_base, sync_mask); |
| 913 | */ |
| 914 | } |
| 915 | /// @note This is mix-mode case. For now I do not have possibility to trigger first 4 channels (continous mode) and other (single) ones at once. |
| 916 | /// @note Because triggering is not working it can not be add to synchronous list. First 4 channels don't need this information, anyway. |
| 917 | *instance->triggering_flags &= 0xFFFFFFF0; |
| 918 | } else { // No FIFO - Single mode |
| 919 | if (flags & ME_IO_SINGLE_TYPE_TRIG_SYNCHRONOUS) { //Fired all software synchronous outputs. |
| 920 | tmp = ~(*instance->preload_flags | 0xFFFF0000); |
| 921 | PINFO |
| 922 | ("Fired all software synchronous outputs. mask:0x%08x\n", |
| 923 | tmp); |
| 924 | tmp |= sync_mask & 0xFFFF0000; |
| 925 | // Add this channel to list |
| 926 | tmp &= ~(ME6000_AO_SYNC_HOLD << instance->ao_idx); |
| 927 | |
| 928 | //Fire |
| 929 | PINFO("Software trigger.\n"); |
| 930 | outl(tmp, instance->preload_reg); |
| 931 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 932 | instance->reg_base, |
| 933 | instance->preload_reg - instance->reg_base, |
| 934 | tmp); |
| 935 | |
| 936 | //Restore save settings |
| 937 | outl(sync_mask, instance->preload_reg); |
| 938 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 939 | instance->reg_base, |
| 940 | instance->preload_reg - instance->reg_base, |
| 941 | sync_mask); |
| 942 | |
| 943 | //Set all as triggered. |
| 944 | *instance->triggering_flags = 0x0; |
| 945 | } else if (!mode) { // Add this channel to list |
| 946 | outl(sync_mask & |
| 947 | ~(ME6000_AO_SYNC_HOLD << instance->ao_idx), |
| 948 | instance->preload_reg); |
| 949 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 950 | instance->reg_base, |
| 951 | instance->preload_reg - instance->reg_base, |
| 952 | sync_mask & ~(ME6000_AO_SYNC_HOLD << |
| 953 | instance->ao_idx)); |
| 954 | |
| 955 | //Fire |
| 956 | PINFO("Software trigger.\n"); |
| 957 | |
| 958 | //Restore save settings |
| 959 | outl(sync_mask, instance->preload_reg); |
| 960 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 961 | instance->reg_base, |
| 962 | instance->preload_reg - instance->reg_base, |
| 963 | sync_mask); |
| 964 | |
| 965 | //Set all as triggered. |
| 966 | *instance->triggering_flags = 0x0; |
| 967 | } |
| 968 | |
| 969 | } |
| 970 | spin_unlock(instance->preload_reg_lock); |
| 971 | |
| 972 | instance->status = ao_status_single_run_wait; |
| 973 | |
| 974 | instance->timeout.delay = delay; |
| 975 | instance->timeout.start_time = jiffies; |
| 976 | instance->ao_control_task_flag = 1; |
| 977 | queue_delayed_work(instance->me6000_workqueue, |
| 978 | &instance->ao_control_task, 1); |
| 979 | |
| 980 | if (!(flags & ME_IO_SINGLE_TYPE_WRITE_NONBLOCKING)) { |
| 981 | j = jiffies; |
| 982 | |
| 983 | //Only runing process will interrupt this call. Events are signaled when status change. Extra timeout add for safe reason. |
| 984 | wait_event_interruptible_timeout(instance->wait_queue, |
| 985 | (instance->status != |
| 986 | ao_status_single_run_wait), |
| 987 | (delay) ? delay + |
| 988 | 1 : LONG_MAX); |
| 989 | |
| 990 | if (instance->status != ao_status_single_end) { |
| 991 | PDEBUG("Single canceled.\n"); |
| 992 | err = ME_ERRNO_CANCELLED; |
| 993 | } |
| 994 | |
| 995 | if (signal_pending(current)) { |
| 996 | PERROR("Wait on start of state machine interrupted.\n"); |
| 997 | instance->ao_control_task_flag = 0; |
| 998 | cancel_delayed_work(&instance->ao_control_task); |
| 999 | ao_stop_immediately(instance); |
| 1000 | instance->status = ao_status_none; |
| 1001 | err = ME_ERRNO_SIGNAL; |
| 1002 | } |
| 1003 | |
| 1004 | if ((delay) && ((jiffies - j) >= delay)) { |
| 1005 | if (instance->status == ao_status_single_end) { |
| 1006 | PDEBUG("Timeout reached.\n"); |
| 1007 | } else if ((jiffies - j) > delay) { |
| 1008 | PERROR |
| 1009 | ("Timeout reached. Not handled by control task!\n"); |
| 1010 | ao_stop_immediately(instance); |
| 1011 | } else { |
| 1012 | PERROR |
| 1013 | ("Timeout reached. Signal come but status is strange: %d\n", |
| 1014 | instance->status); |
| 1015 | ao_stop_immediately(instance); |
| 1016 | } |
| 1017 | |
| 1018 | instance->ao_control_task_flag = 0; |
| 1019 | cancel_delayed_work(&instance->ao_control_task); |
| 1020 | instance->status = ao_status_single_end; |
| 1021 | err = ME_ERRNO_TIMEOUT; |
| 1022 | } |
| 1023 | } |
| 1024 | |
| 1025 | ME_SUBDEVICE_EXIT; |
| 1026 | |
| 1027 | return err; |
| 1028 | } |
| 1029 | |
| 1030 | static int me6000_ao_io_stream_config(me_subdevice_t * subdevice, |
| 1031 | struct file *filep, |
| 1032 | meIOStreamConfig_t * config_list, |
| 1033 | int count, |
| 1034 | meIOStreamTrigger_t * trigger, |
| 1035 | int fifo_irq_threshold, int flags) |
| 1036 | { |
| 1037 | me6000_ao_subdevice_t *instance; |
| 1038 | int err = ME_ERRNO_SUCCESS; |
| 1039 | uint32_t ctrl; |
| 1040 | unsigned long cpu_flags; |
| 1041 | uint64_t conv_ticks; |
| 1042 | unsigned int conv_start_ticks_low = trigger->iConvStartTicksLow; |
| 1043 | unsigned int conv_start_ticks_high = trigger->iConvStartTicksHigh; |
| 1044 | |
| 1045 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 1046 | |
| 1047 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 1048 | |
| 1049 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { |
| 1050 | PERROR("Not a streaming ao.\n"); |
| 1051 | return ME_ERRNO_NOT_SUPPORTED; |
| 1052 | } |
| 1053 | |
| 1054 | conv_ticks = |
| 1055 | (uint64_t) conv_start_ticks_low + |
| 1056 | ((uint64_t) conv_start_ticks_high << 32); |
| 1057 | |
| 1058 | if (flags & |
| 1059 | ~(ME_IO_STREAM_CONFIG_HARDWARE_ONLY | |
| 1060 | ME_IO_STREAM_CONFIG_WRAPAROUND)) { |
| 1061 | PERROR("Invalid flags.\n"); |
| 1062 | return ME_ERRNO_INVALID_FLAGS; |
| 1063 | } |
| 1064 | |
| 1065 | if (flags & ME_IO_STREAM_CONFIG_HARDWARE_ONLY) { |
| 1066 | if (!flags & ME_IO_STREAM_CONFIG_WRAPAROUND) { |
| 1067 | PERROR |
| 1068 | ("Hardware ME_IO_STREAM_CONFIG_HARDWARE_ONLY has to be with ME_IO_STREAM_CONFIG_WRAPAROUND.\n"); |
| 1069 | return ME_ERRNO_INVALID_FLAGS; |
| 1070 | } |
| 1071 | |
| 1072 | if ((trigger->iAcqStopTrigType != ME_TRIG_TYPE_NONE) |
| 1073 | || (trigger->iScanStopTrigType != ME_TRIG_TYPE_NONE)) { |
| 1074 | PERROR |
| 1075 | ("Hardware wraparound mode must be in infinite mode.\n"); |
| 1076 | return ME_ERRNO_INVALID_FLAGS; |
| 1077 | } |
| 1078 | } |
| 1079 | |
| 1080 | if (count != 1) { |
| 1081 | PERROR("Only 1 entry in config list acceptable.\n"); |
| 1082 | return ME_ERRNO_INVALID_CONFIG_LIST_COUNT; |
| 1083 | } |
| 1084 | |
| 1085 | if (config_list[0].iChannel != 0) { |
| 1086 | PERROR("Invalid channel number specified.\n"); |
| 1087 | return ME_ERRNO_INVALID_CHANNEL; |
| 1088 | } |
| 1089 | |
| 1090 | if (config_list[0].iStreamConfig != 0) { |
| 1091 | PERROR("Only one range available.\n"); |
| 1092 | return ME_ERRNO_INVALID_STREAM_CONFIG; |
| 1093 | } |
| 1094 | |
| 1095 | if (config_list[0].iRef != ME_REF_AO_GROUND) { |
| 1096 | PERROR("Output is referenced to ground.\n"); |
| 1097 | return ME_ERRNO_INVALID_REF; |
| 1098 | } |
| 1099 | |
| 1100 | if ((trigger->iAcqStartTicksLow != 0) |
| 1101 | || (trigger->iAcqStartTicksHigh != 0)) { |
| 1102 | PERROR |
| 1103 | ("Invalid acquisition start trigger argument specified.\n"); |
| 1104 | return ME_ERRNO_INVALID_ACQ_START_ARG; |
| 1105 | } |
| 1106 | |
| 1107 | if (config_list[0].iFlags) { |
| 1108 | PERROR("Invalid config list flag.\n"); |
| 1109 | return ME_ERRNO_INVALID_FLAGS; |
| 1110 | } |
| 1111 | |
| 1112 | if ((trigger->iAcqStartTrigType != ME_TRIG_TYPE_SW) |
| 1113 | && (trigger->iAcqStartTrigType != ME_TRIG_TYPE_EXT_DIGITAL)) { |
| 1114 | PERROR("Invalid acquisition start trigger type specified.\n"); |
| 1115 | return ME_ERRNO_INVALID_ACQ_START_TRIG_TYPE; |
| 1116 | } |
| 1117 | |
| 1118 | if (trigger->iAcqStartTrigType == ME_TRIG_TYPE_EXT_DIGITAL) { |
| 1119 | switch (trigger->iAcqStartTrigEdge) { |
| 1120 | case ME_TRIG_EDGE_RISING: |
| 1121 | case ME_TRIG_EDGE_FALLING: |
| 1122 | case ME_TRIG_EDGE_ANY: |
| 1123 | break; |
| 1124 | |
| 1125 | default: |
| 1126 | PERROR |
| 1127 | ("Invalid acquisition start trigger edge specified.\n"); |
| 1128 | return ME_ERRNO_INVALID_ACQ_START_TRIG_EDGE; |
| 1129 | } |
| 1130 | } |
| 1131 | |
| 1132 | if ((trigger->iAcqStartTrigType == ME_TRIG_TYPE_SW) |
| 1133 | && (trigger->iAcqStartTrigEdge != ME_TRIG_TYPE_NONE)) { |
| 1134 | PERROR("Invalid acquisition start trigger edge specified.\n"); |
| 1135 | return ME_ERRNO_INVALID_ACQ_START_TRIG_EDGE; |
| 1136 | } |
| 1137 | |
| 1138 | if (trigger->iScanStartTrigType != ME_TRIG_TYPE_FOLLOW) { |
| 1139 | PERROR("Invalid scan start trigger type specified.\n"); |
| 1140 | return ME_ERRNO_INVALID_SCAN_START_TRIG_TYPE; |
| 1141 | } |
| 1142 | |
| 1143 | if (trigger->iConvStartTrigType != ME_TRIG_TYPE_TIMER) { |
| 1144 | PERROR("Invalid conv start trigger type specified.\n"); |
| 1145 | return ME_ERRNO_INVALID_CONV_START_TRIG_TYPE; |
| 1146 | } |
| 1147 | |
| 1148 | if ((conv_ticks < ME6000_AO_MIN_CHAN_TICKS) |
| 1149 | || (conv_ticks > ME6000_AO_MAX_CHAN_TICKS)) { |
| 1150 | PERROR("Invalid conv start trigger argument specified.\n"); |
| 1151 | return ME_ERRNO_INVALID_CONV_START_ARG; |
| 1152 | } |
| 1153 | |
| 1154 | if (trigger->iAcqStartTicksLow || trigger->iAcqStartTicksHigh) { |
| 1155 | PERROR("Invalid acq start trigger argument specified.\n"); |
| 1156 | return ME_ERRNO_INVALID_ACQ_START_ARG; |
| 1157 | } |
| 1158 | |
| 1159 | if (trigger->iScanStartTicksLow || trigger->iScanStartTicksHigh) { |
| 1160 | PERROR("Invalid scan start trigger argument specified.\n"); |
| 1161 | return ME_ERRNO_INVALID_SCAN_START_ARG; |
| 1162 | } |
| 1163 | |
| 1164 | switch (trigger->iScanStopTrigType) { |
| 1165 | case ME_TRIG_TYPE_NONE: |
| 1166 | if (trigger->iScanStopCount != 0) { |
| 1167 | PERROR("Invalid scan stop count specified.\n"); |
| 1168 | return ME_ERRNO_INVALID_SCAN_STOP_ARG; |
| 1169 | } |
| 1170 | break; |
| 1171 | |
| 1172 | case ME_TRIG_TYPE_COUNT: |
| 1173 | if (flags & ME_IO_STREAM_CONFIG_WRAPAROUND) { |
| 1174 | if (trigger->iScanStopCount <= 0) { |
| 1175 | PERROR("Invalid scan stop count specified.\n"); |
| 1176 | return ME_ERRNO_INVALID_SCAN_STOP_ARG; |
| 1177 | } |
| 1178 | } else { |
| 1179 | PERROR("The continous mode has not 'scan' contects.\n"); |
| 1180 | return ME_ERRNO_INVALID_ACQ_STOP_TRIG_TYPE; |
| 1181 | } |
| 1182 | break; |
| 1183 | |
| 1184 | default: |
| 1185 | PERROR("Invalid scan stop trigger type specified.\n"); |
| 1186 | return ME_ERRNO_INVALID_SCAN_STOP_TRIG_TYPE; |
| 1187 | } |
| 1188 | |
| 1189 | switch (trigger->iAcqStopTrigType) { |
| 1190 | case ME_TRIG_TYPE_NONE: |
| 1191 | if (trigger->iAcqStopCount != 0) { |
| 1192 | PERROR("Invalid acq stop count specified.\n"); |
| 1193 | return ME_ERRNO_INVALID_ACQ_STOP_ARG; |
| 1194 | } |
| 1195 | break; |
| 1196 | |
| 1197 | case ME_TRIG_TYPE_COUNT: |
| 1198 | if (trigger->iScanStopTrigType != ME_TRIG_TYPE_NONE) { |
| 1199 | PERROR("Invalid acq stop trigger type specified.\n"); |
| 1200 | return ME_ERRNO_INVALID_ACQ_STOP_TRIG_TYPE; |
| 1201 | } |
| 1202 | |
| 1203 | if (flags & ME_IO_STREAM_CONFIG_WRAPAROUND) { |
| 1204 | if (trigger->iAcqStopCount <= 0) { |
| 1205 | PERROR |
| 1206 | ("The continous mode has not 'scan' contects.\n"); |
| 1207 | return ME_ERRNO_INVALID_ACQ_STOP_ARG; |
| 1208 | } |
| 1209 | } |
| 1210 | // else |
| 1211 | // { |
| 1212 | // PERROR("Invalid acq stop trigger type specified.\n"); |
| 1213 | // return ME_ERRNO_INVALID_ACQ_STOP_TRIG_TYPE; |
| 1214 | // } |
| 1215 | |
| 1216 | break; |
| 1217 | |
| 1218 | default: |
| 1219 | PERROR("Invalid acq stop trigger type specified.\n"); |
| 1220 | return ME_ERRNO_INVALID_ACQ_STOP_TRIG_TYPE; |
| 1221 | } |
| 1222 | |
| 1223 | switch (trigger->iAcqStartTrigChan) { |
| 1224 | case ME_TRIG_CHAN_DEFAULT: |
| 1225 | case ME_TRIG_CHAN_SYNCHRONOUS: |
| 1226 | break; |
| 1227 | |
| 1228 | default: |
| 1229 | PERROR("Invalid acq start trigger channel specified.\n"); |
| 1230 | return ME_ERRNO_INVALID_ACQ_START_TRIG_CHAN; |
| 1231 | } |
| 1232 | |
| 1233 | ME_SUBDEVICE_ENTER; |
| 1234 | |
| 1235 | //Stop device |
| 1236 | |
| 1237 | //Cancel control task |
| 1238 | PDEBUG("Cancel control task. idx=%d\n", instance->ao_idx); |
| 1239 | instance->ao_control_task_flag = 0; |
| 1240 | cancel_delayed_work(&instance->ao_control_task); |
| 1241 | |
| 1242 | //Check if state machine is stopped. |
| 1243 | err = ao_stop_immediately(instance); |
| 1244 | if (err) { |
| 1245 | PERROR_CRITICAL("FSM IS BUSY!\n"); |
| 1246 | ME_SUBDEVICE_EXIT; |
| 1247 | |
| 1248 | return ME_ERRNO_SUBDEVICE_BUSY; |
| 1249 | } |
| 1250 | |
| 1251 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 1252 | //Reset control register. Block all actions. Disable IRQ. Disable FIFO. |
| 1253 | ctrl = ME6000_AO_CTRL_BIT_IMMEDIATE_STOP | ME6000_AO_CTRL_BIT_STOP; |
| 1254 | outl(ctrl, instance->ctrl_reg); |
| 1255 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 1256 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 1257 | |
| 1258 | //Reset interrupt latch |
| 1259 | inl(instance->irq_reset_reg); |
| 1260 | |
| 1261 | //This is paranoic, but to be sure. |
| 1262 | instance->preloaded_count = 0; |
| 1263 | instance->data_count = 0; |
| 1264 | instance->circ_buf.head = 0; |
| 1265 | instance->circ_buf.tail = 0; |
| 1266 | |
| 1267 | /* Set mode. */ |
| 1268 | if (flags & ME_IO_STREAM_CONFIG_WRAPAROUND) { //Wraparound |
| 1269 | if (flags & ME_IO_STREAM_CONFIG_HARDWARE_ONLY) { //Hardware wraparound |
| 1270 | PINFO("Hardware wraparound.\n"); |
| 1271 | ctrl |= ME6000_AO_MODE_WRAPAROUND; |
| 1272 | instance->mode = ME6000_AO_HW_WRAP_MODE; |
| 1273 | } else { //Software wraparound |
| 1274 | PINFO("Software wraparound.\n"); |
| 1275 | ctrl |= ME6000_AO_MODE_CONTINUOUS; |
| 1276 | instance->mode = ME6000_AO_SW_WRAP_MODE; |
| 1277 | } |
| 1278 | } else { //Continous |
| 1279 | PINFO("Continous.\n"); |
| 1280 | ctrl |= ME6000_AO_MODE_CONTINUOUS; |
| 1281 | instance->mode = ME6000_AO_CONTINOUS; |
| 1282 | } |
| 1283 | |
| 1284 | //Set the trigger edge. |
| 1285 | if (trigger->iAcqStartTrigType == ME_TRIG_TYPE_EXT_DIGITAL) { //Set the trigger type and edge for external trigger. |
| 1286 | PINFO("External digital trigger.\n"); |
| 1287 | instance->start_mode = ME6000_AO_EXT_TRIG; |
| 1288 | |
| 1289 | switch (trigger->iAcqStartTrigEdge) { |
| 1290 | case ME_TRIG_EDGE_RISING: |
| 1291 | PINFO("Set the trigger edge: rising.\n"); |
| 1292 | instance->ctrl_trg = 0x0; |
| 1293 | break; |
| 1294 | |
| 1295 | case ME_TRIG_EDGE_FALLING: |
| 1296 | PINFO("Set the trigger edge: falling.\n"); |
| 1297 | // ctrl |= ME6000_AO_CTRL_BIT_EX_TRIG_EDGE; |
| 1298 | instance->ctrl_trg = ME6000_AO_CTRL_BIT_EX_TRIG_EDGE; |
| 1299 | break; |
| 1300 | |
| 1301 | case ME_TRIG_EDGE_ANY: |
| 1302 | PINFO("Set the trigger edge: both edges.\n"); |
| 1303 | // ctrl |= ME6000_AO_CTRL_BIT_EX_TRIG_EDGE | ME6000_AO_CTRL_BIT_EX_TRIG_EDGE_BOTH; |
| 1304 | instance->ctrl_trg = |
| 1305 | ME6000_AO_CTRL_BIT_EX_TRIG_EDGE | |
| 1306 | ME6000_AO_CTRL_BIT_EX_TRIG_EDGE_BOTH; |
| 1307 | break; |
| 1308 | } |
| 1309 | } else { |
| 1310 | PINFO("Internal software trigger.\n"); |
| 1311 | instance->start_mode = 0; |
| 1312 | } |
| 1313 | |
| 1314 | //Set the stop mode and value. |
| 1315 | if (trigger->iAcqStopTrigType == ME_TRIG_TYPE_COUNT) { //Amount of data |
| 1316 | instance->stop_mode = ME6000_AO_ACQ_STOP_MODE; |
| 1317 | instance->stop_count = trigger->iAcqStopCount; |
| 1318 | } else if (trigger->iScanStopTrigType == ME_TRIG_TYPE_COUNT) { //Amount of 'scans' |
| 1319 | instance->stop_mode = ME6000_AO_SCAN_STOP_MODE; |
| 1320 | instance->stop_count = trigger->iScanStopCount; |
| 1321 | } else { //Infinite |
| 1322 | instance->stop_mode = ME6000_AO_INF_STOP_MODE; |
| 1323 | instance->stop_count = 0; |
| 1324 | } |
| 1325 | |
| 1326 | PINFO("Stop count: %d.\n", instance->stop_count); |
| 1327 | |
| 1328 | if (trigger->iAcqStartTrigChan == ME_TRIG_CHAN_SYNCHRONOUS) { //Synchronous start |
| 1329 | instance->start_mode |= ME6000_AO_SYNC_HOLD; |
| 1330 | if (trigger->iAcqStartTrigType == ME_TRIG_TYPE_EXT_DIGITAL) { //Externaly triggered |
| 1331 | PINFO("Synchronous start. Externaly trigger active.\n"); |
| 1332 | instance->start_mode |= ME6000_AO_SYNC_EXT_TRIG; |
| 1333 | } |
| 1334 | #ifdef MEDEBUG_INFO |
| 1335 | else { |
| 1336 | PINFO |
| 1337 | ("Synchronous start. Externaly trigger dissabled.\n"); |
| 1338 | } |
| 1339 | #endif |
| 1340 | |
| 1341 | } |
| 1342 | //Set speed |
| 1343 | outl(conv_ticks - 2, instance->timer_reg); |
| 1344 | PDEBUG_REG("timer_reg outl(0x%lX+0x%lX)=0x%llx\n", instance->reg_base, |
| 1345 | instance->timer_reg - instance->reg_base, conv_ticks - 2); |
| 1346 | instance->hardware_stop_delay = (int)(conv_ticks * HZ) / ME6000_AO_BASE_FREQUENCY; //<== MUST be with cast! |
| 1347 | |
| 1348 | // Write the control word |
| 1349 | outl(ctrl, instance->ctrl_reg); |
| 1350 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 1351 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 1352 | |
| 1353 | //Set status. |
| 1354 | instance->status = ao_status_stream_configured; |
| 1355 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 1356 | |
| 1357 | ME_SUBDEVICE_EXIT; |
| 1358 | |
| 1359 | return err; |
| 1360 | } |
| 1361 | |
| 1362 | static int me6000_ao_io_stream_new_values(me_subdevice_t * subdevice, |
| 1363 | struct file *filep, |
| 1364 | int time_out, int *count, int flags) |
| 1365 | { |
| 1366 | me6000_ao_subdevice_t *instance; |
| 1367 | int err = ME_ERRNO_SUCCESS; |
| 1368 | long t = 0; |
| 1369 | long j; |
| 1370 | |
| 1371 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 1372 | |
| 1373 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 1374 | |
| 1375 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { |
| 1376 | PERROR("Not a streaming ao.\n"); |
| 1377 | return ME_ERRNO_NOT_SUPPORTED; |
| 1378 | } |
| 1379 | |
| 1380 | if (flags) { |
| 1381 | PERROR("Invalid flag specified.\n"); |
| 1382 | return ME_ERRNO_INVALID_FLAGS; |
| 1383 | } |
| 1384 | |
| 1385 | if (!instance->circ_buf.buf) { |
| 1386 | PERROR("Circular buffer not exists.\n"); |
| 1387 | return ME_ERRNO_INTERNAL; |
| 1388 | } |
| 1389 | |
| 1390 | if (time_out < 0) { |
| 1391 | PERROR("Invalid time_out specified.\n"); |
| 1392 | return ME_ERRNO_INVALID_TIMEOUT; |
| 1393 | } |
| 1394 | |
| 1395 | ME_SUBDEVICE_ENTER; |
| 1396 | |
| 1397 | if (me_circ_buf_space(&instance->circ_buf)) { //The buffer is NOT full. |
| 1398 | *count = me_circ_buf_space(&instance->circ_buf); |
| 1399 | } else { //The buffer is full. |
| 1400 | if (time_out) { |
| 1401 | t = (time_out * HZ) / 1000; |
| 1402 | |
| 1403 | if (t == 0) |
| 1404 | t = 1; |
| 1405 | } else { //Max time. |
| 1406 | t = LONG_MAX; |
| 1407 | } |
| 1408 | |
| 1409 | *count = 0; |
| 1410 | |
| 1411 | j = jiffies; |
| 1412 | |
| 1413 | //Only runing process will interrupt this call. Interrupts are when FIFO HF is signaled. |
| 1414 | wait_event_interruptible_timeout(instance->wait_queue, |
| 1415 | ((me_circ_buf_space |
| 1416 | (&instance->circ_buf)) |
| 1417 | || !(inl(instance->status_reg) |
| 1418 | & |
| 1419 | ME6000_AO_STATUS_BIT_FSM)), |
| 1420 | t); |
| 1421 | |
| 1422 | if (!(inl(instance->status_reg) & ME6000_AO_STATUS_BIT_FSM)) { |
| 1423 | PERROR("AO subdevice is not running.\n"); |
| 1424 | err = ME_ERRNO_SUBDEVICE_NOT_RUNNING; |
| 1425 | } else if (signal_pending(current)) { |
| 1426 | PERROR("Wait on values interrupted from signal.\n"); |
| 1427 | instance->status = ao_status_none; |
| 1428 | ao_stop_immediately(instance); |
| 1429 | err = ME_ERRNO_SIGNAL; |
| 1430 | } else if ((jiffies - j) >= t) { |
| 1431 | PERROR("Wait on values timed out.\n"); |
| 1432 | err = ME_ERRNO_TIMEOUT; |
| 1433 | } else { //Uff... all is good. Inform user about empty space. |
| 1434 | *count = me_circ_buf_space(&instance->circ_buf); |
| 1435 | } |
| 1436 | } |
| 1437 | |
| 1438 | ME_SUBDEVICE_EXIT; |
| 1439 | |
| 1440 | return err; |
| 1441 | } |
| 1442 | |
| 1443 | static int me6000_ao_io_stream_start(me_subdevice_t * subdevice, |
| 1444 | struct file *filep, |
| 1445 | int start_mode, int time_out, int flags) |
| 1446 | { |
| 1447 | me6000_ao_subdevice_t *instance; |
| 1448 | int err = ME_ERRNO_SUCCESS; |
| 1449 | unsigned long cpu_flags = 0; |
| 1450 | uint32_t status; |
| 1451 | uint32_t ctrl; |
| 1452 | uint32_t synch; |
| 1453 | int count = 0; |
| 1454 | int circ_buffer_count; |
| 1455 | |
| 1456 | unsigned long ref; |
| 1457 | unsigned long delay = 0; |
| 1458 | |
| 1459 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 1460 | |
| 1461 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 1462 | |
| 1463 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { |
| 1464 | PERROR("Not a streaming ao.\n"); |
| 1465 | return ME_ERRNO_NOT_SUPPORTED; |
| 1466 | } |
| 1467 | |
| 1468 | if (flags & ~ME_IO_STREAM_START_TYPE_TRIG_SYNCHRONOUS) { |
| 1469 | PERROR("Invalid flags.\n"); |
| 1470 | return ME_ERRNO_INVALID_FLAGS; |
| 1471 | } |
| 1472 | |
| 1473 | if (time_out < 0) { |
| 1474 | PERROR("Invalid timeout specified.\n"); |
| 1475 | return ME_ERRNO_INVALID_TIMEOUT; |
| 1476 | } |
| 1477 | |
| 1478 | if ((start_mode != ME_START_MODE_BLOCKING) |
| 1479 | && (start_mode != ME_START_MODE_NONBLOCKING)) { |
| 1480 | PERROR("Invalid start mode specified.\n"); |
| 1481 | return ME_ERRNO_INVALID_START_MODE; |
| 1482 | } |
| 1483 | |
| 1484 | if (time_out) { |
| 1485 | delay = (time_out * HZ) / 1000; |
| 1486 | if (delay == 0) |
| 1487 | delay = 1; |
| 1488 | } |
| 1489 | |
| 1490 | switch (instance->status) { //Checking actual mode. |
| 1491 | case ao_status_stream_configured: |
| 1492 | case ao_status_stream_end: |
| 1493 | //Correct modes! |
| 1494 | break; |
| 1495 | |
| 1496 | //The device is in wrong mode. |
| 1497 | case ao_status_none: |
| 1498 | case ao_status_single_configured: |
| 1499 | case ao_status_single_run_wait: |
| 1500 | case ao_status_single_run: |
| 1501 | case ao_status_single_end_wait: |
| 1502 | PERROR |
| 1503 | ("Subdevice must be preinitialize correctly for streaming.\n"); |
| 1504 | return ME_ERRNO_PREVIOUS_CONFIG; |
| 1505 | |
| 1506 | case ao_status_stream_fifo_error: |
| 1507 | case ao_status_stream_buffer_error: |
| 1508 | case ao_status_stream_error: |
| 1509 | PDEBUG("Before restart broke stream 'STOP' must be caled.\n"); |
| 1510 | return ME_STATUS_ERROR; |
| 1511 | |
| 1512 | case ao_status_stream_run_wait: |
| 1513 | case ao_status_stream_run: |
| 1514 | case ao_status_stream_end_wait: |
| 1515 | PDEBUG("Stream is already working.\n"); |
| 1516 | return ME_ERRNO_SUBDEVICE_BUSY; |
| 1517 | |
| 1518 | default: |
| 1519 | instance->status = ao_status_stream_error; |
| 1520 | PERROR_CRITICAL("Status is in wrong state!\n"); |
| 1521 | return ME_ERRNO_INTERNAL; |
| 1522 | |
| 1523 | } |
| 1524 | |
| 1525 | ME_SUBDEVICE_ENTER; |
| 1526 | |
| 1527 | if (instance->mode == ME6000_AO_CONTINOUS) { //Continous |
| 1528 | instance->circ_buf.tail += instance->preloaded_count; |
| 1529 | instance->circ_buf.tail &= instance->circ_buf.mask; |
| 1530 | } |
| 1531 | circ_buffer_count = me_circ_buf_values(&instance->circ_buf); |
| 1532 | |
| 1533 | if (!circ_buffer_count && !instance->preloaded_count) { //No values in buffer |
| 1534 | ME_SUBDEVICE_EXIT; |
| 1535 | PERROR("No values in buffer!\n"); |
| 1536 | return ME_ERRNO_LACK_OF_RESOURCES; |
| 1537 | } |
| 1538 | |
| 1539 | //Cancel control task |
| 1540 | PDEBUG("Cancel control task. idx=%d\n", instance->ao_idx); |
| 1541 | instance->ao_control_task_flag = 0; |
| 1542 | cancel_delayed_work(&instance->ao_control_task); |
| 1543 | |
| 1544 | //Stop device |
| 1545 | err = ao_stop_immediately(instance); |
| 1546 | if (err) { |
| 1547 | PERROR_CRITICAL("FSM IS BUSY!\n"); |
| 1548 | ME_SUBDEVICE_EXIT; |
| 1549 | |
| 1550 | return ME_ERRNO_SUBDEVICE_BUSY; |
| 1551 | } |
| 1552 | //Set values for single_read() |
| 1553 | instance->single_value = ME6000_AO_MAX_DATA + 1; |
| 1554 | instance->single_value_in_fifo = ME6000_AO_MAX_DATA + 1; |
| 1555 | |
| 1556 | //Setting stop points |
| 1557 | if (instance->stop_mode == ME6000_AO_SCAN_STOP_MODE) { |
| 1558 | instance->stop_data_count = |
| 1559 | instance->stop_count * circ_buffer_count; |
| 1560 | } else { |
| 1561 | instance->stop_data_count = instance->stop_count; |
| 1562 | } |
| 1563 | |
| 1564 | if ((instance->stop_data_count != 0) |
| 1565 | && (instance->stop_data_count < circ_buffer_count)) { |
| 1566 | PERROR("More data in buffer than previously set limit!\n"); |
| 1567 | } |
| 1568 | |
| 1569 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 1570 | ctrl = inl(instance->ctrl_reg); |
| 1571 | //Check FIFO |
| 1572 | if (!(ctrl & ME6000_AO_CTRL_BIT_ENABLE_FIFO)) { //FIFO wasn't enabeled. Do it. <= This should be done by user call with ME_WRITE_MODE_PRELOAD |
| 1573 | PINFO("Enableing FIFO.\n"); |
| 1574 | ctrl |= ME6000_AO_CTRL_BIT_ENABLE_FIFO; |
| 1575 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 1576 | |
| 1577 | instance->preloaded_count = 0; |
| 1578 | instance->data_count = 0; |
| 1579 | } else { //Block IRQ |
| 1580 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 1581 | } |
| 1582 | outl(ctrl, instance->ctrl_reg); |
| 1583 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 1584 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 1585 | |
| 1586 | //Reset interrupt latch |
| 1587 | inl(instance->irq_reset_reg); |
| 1588 | |
| 1589 | //Fill FIFO <= Generaly this should be done by user pre-load call but this is second place to do it. |
| 1590 | status = inl(instance->status_reg); |
| 1591 | if (!(status & ME6000_AO_STATUS_BIT_EF)) { //FIFO empty |
| 1592 | if (instance->stop_data_count != 0) { |
| 1593 | count = ME6000_AO_FIFO_COUNT; |
| 1594 | } else { |
| 1595 | count = |
| 1596 | (ME6000_AO_FIFO_COUNT < |
| 1597 | instance-> |
| 1598 | stop_data_count) ? ME6000_AO_FIFO_COUNT : |
| 1599 | instance->stop_data_count; |
| 1600 | } |
| 1601 | |
| 1602 | //Copy data |
| 1603 | count = |
| 1604 | ao_write_data(instance, count, instance->preloaded_count); |
| 1605 | |
| 1606 | if (count < 0) { //This should never happend! |
| 1607 | PERROR_CRITICAL("COPY FINISH WITH ERROR!\n"); |
| 1608 | spin_unlock_irqrestore(&instance->subdevice_lock, |
| 1609 | cpu_flags); |
| 1610 | ME_SUBDEVICE_EXIT; |
| 1611 | return ME_ERRNO_INTERNAL; |
| 1612 | } |
| 1613 | } |
| 1614 | //Set pre-load features. |
| 1615 | spin_lock(instance->preload_reg_lock); |
| 1616 | synch = inl(instance->preload_reg); |
| 1617 | synch &= |
| 1618 | ~((ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << instance-> |
| 1619 | ao_idx); |
| 1620 | synch |= |
| 1621 | (instance->start_mode & ~ME6000_AO_EXT_TRIG) << instance->ao_idx; |
| 1622 | outl(synch, instance->preload_reg); |
| 1623 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 1624 | instance->preload_reg - instance->reg_base, synch); |
| 1625 | spin_unlock(instance->preload_reg_lock); |
| 1626 | |
| 1627 | //Default count is '0' |
| 1628 | if (instance->mode == ME6000_AO_CONTINOUS) { //Continous |
| 1629 | instance->preloaded_count = 0; |
| 1630 | instance->circ_buf.tail += count; |
| 1631 | instance->circ_buf.tail &= instance->circ_buf.mask; |
| 1632 | } else { //Wraparound |
| 1633 | instance->preloaded_count += count; |
| 1634 | instance->data_count += count; |
| 1635 | |
| 1636 | //Special case: Infinite wraparound with less than FIFO datas always should runs in hardware mode. |
| 1637 | if ((instance->stop_mode == ME6000_AO_INF_STOP_MODE) |
| 1638 | && (circ_buffer_count <= ME6000_AO_FIFO_COUNT)) { //Change to hardware wraparound |
| 1639 | PDEBUG |
| 1640 | ("Changeing mode from software wraparound to hardware wraparound.\n"); |
| 1641 | //Copy all data |
| 1642 | count = |
| 1643 | ao_write_data(instance, circ_buffer_count, |
| 1644 | instance->preloaded_count); |
| 1645 | ctrl &= ~ME6000_AO_CTRL_MODE_MASK; |
| 1646 | ctrl |= ME6000_AO_MODE_WRAPAROUND; |
| 1647 | } |
| 1648 | |
| 1649 | if (instance->preloaded_count == me_circ_buf_values(&instance->circ_buf)) { //Reset position indicator. |
| 1650 | instance->preloaded_count = 0; |
| 1651 | } else if (instance->preloaded_count > me_circ_buf_values(&instance->circ_buf)) { //This should never happend! |
| 1652 | PERROR_CRITICAL |
| 1653 | ("PRELOADED MORE VALUES THAN ARE IN BUFFER!\n"); |
| 1654 | spin_unlock_irqrestore(&instance->subdevice_lock, |
| 1655 | cpu_flags); |
| 1656 | ME_SUBDEVICE_EXIT; |
| 1657 | return ME_ERRNO_INTERNAL; |
| 1658 | } |
| 1659 | } |
| 1660 | |
| 1661 | //Set status to 'wait for start' |
| 1662 | instance->status = ao_status_stream_run_wait; |
| 1663 | |
| 1664 | status = inl(instance->status_reg); |
| 1665 | //Start state machine and interrupts |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 1666 | PINFO("<%s:%d> Start state machine.\n", __func__, __LINE__); |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1667 | ctrl &= ~(ME6000_AO_CTRL_BIT_STOP | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP); |
| 1668 | if (instance->start_mode == ME6000_AO_EXT_TRIG) { |
| 1669 | PDEBUG("DIGITAL TRIGGER\n"); |
| 1670 | ctrl |= ME6000_AO_CTRL_BIT_ENABLE_EX_TRIG; |
| 1671 | } |
| 1672 | if (!(status & ME6000_AO_STATUS_BIT_HF)) { //More than half! |
| 1673 | if ((ctrl & ME6000_AO_CTRL_MODE_MASK) == ME6000_AO_MODE_CONTINUOUS) { //Enable IRQ only when hardware_continous is set and FIFO is more than half |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 1674 | PINFO("<%s:%d> Start interrupts.\n", __func__, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1675 | __LINE__); |
| 1676 | ctrl |= ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 1677 | } |
| 1678 | } |
| 1679 | outl(ctrl, instance->ctrl_reg); |
| 1680 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 1681 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 1682 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 1683 | |
| 1684 | //Trigger output |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 1685 | PINFO("<%s> start mode= 0x%x %s\n", __func__, instance->start_mode, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1686 | (flags & ME_IO_SINGLE_TYPE_TRIG_SYNCHRONOUS) ? "SYNCHRONOUS" : |
| 1687 | ""); |
| 1688 | if (flags & ME_IO_SINGLE_TYPE_TRIG_SYNCHRONOUS) { //Trigger outputs |
| 1689 | spin_lock(instance->preload_reg_lock); |
| 1690 | synch = inl(instance->preload_reg); |
| 1691 | //Add channel to start list |
| 1692 | outl(synch | (ME6000_AO_SYNC_HOLD << instance->ao_idx), |
| 1693 | instance->preload_reg); |
| 1694 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 1695 | instance->reg_base, |
| 1696 | instance->preload_reg - instance->reg_base, |
| 1697 | synch | (ME6000_AO_SYNC_HOLD << instance->ao_idx)); |
| 1698 | |
| 1699 | //Fire |
| 1700 | PINFO |
| 1701 | ("Fired all software synchronous outputs by software trigger.\n"); |
| 1702 | outl(0x8000, instance->single_reg); |
| 1703 | PDEBUG_REG("single_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 1704 | instance->reg_base, |
| 1705 | instance->single_reg - instance->reg_base, 0x8000); |
| 1706 | |
| 1707 | //Restore save settings |
| 1708 | outl(synch, instance->preload_reg); |
| 1709 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 1710 | instance->reg_base, |
| 1711 | instance->preload_reg - instance->reg_base, synch); |
| 1712 | spin_unlock(instance->preload_reg_lock); |
| 1713 | } else if (!instance->start_mode) { //Trigger outputs |
| 1714 | /* |
| 1715 | spin_lock(instance->preload_reg_lock); |
| 1716 | synch = inl(instance->preload_reg); |
| 1717 | //Remove channel from start list |
| 1718 | outl(synch & ~(ME6000_AO_SYNC_HOLD << instance->ao_idx), instance->preload_reg); |
| 1719 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, instance->preload_reg - instance->reg_base, synch & ~(ME6000_AO_SYNC_HOLD << instance->ao_idx)); |
| 1720 | */ |
| 1721 | //Fire |
| 1722 | PINFO("Software trigger.\n"); |
| 1723 | outl(0x8000, instance->single_reg); |
| 1724 | PDEBUG_REG("single_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 1725 | instance->reg_base, |
| 1726 | instance->single_reg - instance->reg_base, 0x8000); |
| 1727 | |
| 1728 | /* |
| 1729 | //Restore save settings |
| 1730 | outl(synch, instance->preload_reg); |
| 1731 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, instance->preload_reg - instance->reg_base, synch); |
| 1732 | spin_unlock(instance->preload_reg_lock); |
| 1733 | */ |
| 1734 | } |
| 1735 | // Set control task's timeout |
| 1736 | instance->timeout.delay = delay; |
| 1737 | instance->timeout.start_time = jiffies; |
| 1738 | |
| 1739 | if (status & ME6000_AO_STATUS_BIT_HF) { //Less than half but not empty! |
| 1740 | PINFO("Less than half.\n"); |
| 1741 | if (instance->stop_data_count == 0) { |
| 1742 | count = ME6000_AO_FIFO_COUNT / 2; |
| 1743 | } else { |
| 1744 | count = |
| 1745 | ((ME6000_AO_FIFO_COUNT / 2) < |
| 1746 | instance->stop_data_count) ? ME6000_AO_FIFO_COUNT / |
| 1747 | 2 : instance->stop_data_count; |
| 1748 | } |
| 1749 | |
| 1750 | //Copy data |
| 1751 | count = |
| 1752 | ao_write_data(instance, count, instance->preloaded_count); |
| 1753 | |
| 1754 | if (count < 0) { //This should never happend! |
| 1755 | PERROR_CRITICAL("COPY FINISH WITH ERROR!\n"); |
| 1756 | ME_SUBDEVICE_EXIT; |
| 1757 | return ME_ERRNO_INTERNAL; |
| 1758 | } |
| 1759 | |
| 1760 | if (instance->mode == ME6000_AO_CONTINOUS) { //Continous |
| 1761 | instance->circ_buf.tail += count; |
| 1762 | instance->circ_buf.tail &= instance->circ_buf.mask; |
| 1763 | } else { //Wraparound |
| 1764 | instance->data_count += count; |
| 1765 | instance->preloaded_count += count; |
| 1766 | |
| 1767 | if (instance->preloaded_count == me_circ_buf_values(&instance->circ_buf)) { //Reset position indicator. |
| 1768 | instance->preloaded_count = 0; |
| 1769 | } else if (instance->preloaded_count > me_circ_buf_values(&instance->circ_buf)) { //This should never happend! |
| 1770 | PERROR_CRITICAL |
| 1771 | ("PRELOADED MORE VALUES THAN ARE IN BUFFER!\n"); |
| 1772 | ME_SUBDEVICE_EXIT; |
| 1773 | return ME_ERRNO_INTERNAL; |
| 1774 | } |
| 1775 | } |
| 1776 | |
| 1777 | status = inl(instance->status_reg); |
| 1778 | if (!(status & ME6000_AO_STATUS_BIT_HF)) { //More than half! |
| 1779 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 1780 | PINFO("<%s:%d> Start interrupts.\n", __func__, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1781 | __LINE__); |
| 1782 | ctrl = inl(instance->ctrl_reg); |
| 1783 | ctrl |= ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 1784 | outl(ctrl, instance->ctrl_reg); |
| 1785 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 1786 | instance->reg_base, |
| 1787 | instance->ctrl_reg - instance->reg_base, |
| 1788 | ctrl); |
| 1789 | spin_unlock_irqrestore(&instance->subdevice_lock, |
| 1790 | cpu_flags); |
| 1791 | } |
| 1792 | } |
| 1793 | //Special case: Limited wraparound with less than HALF FIFO datas need work around to generate first interrupt. |
| 1794 | if ((instance->stop_mode != ME6000_AO_INF_STOP_MODE) |
| 1795 | && (instance->mode == ME6000_AO_SW_WRAP_MODE) |
| 1796 | && (circ_buffer_count <= (ME6000_AO_FIFO_COUNT / 2))) { //Put more data to FIFO |
| 1797 | PINFO("Limited wraparound with less than HALF FIFO datas.\n"); |
| 1798 | if (instance->preloaded_count) { //This should never happend! |
| 1799 | PERROR_CRITICAL |
| 1800 | ("ERROR WHEN LOADING VALUES FOR WRAPAROUND!\n"); |
| 1801 | ME_SUBDEVICE_EXIT; |
| 1802 | return ME_ERRNO_INTERNAL; |
| 1803 | } |
| 1804 | |
| 1805 | while (instance->stop_data_count > instance->data_count) { //Maximum data not set jet. |
| 1806 | //Copy to buffer |
| 1807 | if (circ_buffer_count != ao_write_data(instance, circ_buffer_count, 0)) { //This should never happend! |
| 1808 | PERROR_CRITICAL |
| 1809 | ("ERROR WHEN LOADING VALUES FOR WRAPAROUND!\n"); |
| 1810 | ME_SUBDEVICE_EXIT; |
| 1811 | return ME_ERRNO_INTERNAL; |
| 1812 | } |
| 1813 | instance->data_count += circ_buffer_count; |
| 1814 | |
| 1815 | if (!((status = inl(instance->status_reg)) & ME6000_AO_STATUS_BIT_HF)) { //FIFO is more than half. Enable IRQ and end copy. |
| 1816 | //Reset interrupt latch |
| 1817 | inl(instance->irq_reset_reg); |
| 1818 | |
| 1819 | spin_lock_irqsave(&instance->subdevice_lock, |
| 1820 | cpu_flags); |
| 1821 | PINFO("<%s:%d> Start interrupts.\n", |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 1822 | __func__, __LINE__); |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 1823 | ctrl = inl(instance->ctrl_reg); |
| 1824 | ctrl |= ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 1825 | outl(ctrl, instance->ctrl_reg); |
| 1826 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 1827 | instance->reg_base, |
| 1828 | instance->ctrl_reg - |
| 1829 | instance->reg_base, ctrl); |
| 1830 | spin_unlock_irqrestore(&instance-> |
| 1831 | subdevice_lock, |
| 1832 | cpu_flags); |
| 1833 | break; |
| 1834 | } |
| 1835 | } |
| 1836 | } |
| 1837 | // Schedule control task |
| 1838 | instance->ao_control_task_flag = 1; |
| 1839 | queue_delayed_work(instance->me6000_workqueue, |
| 1840 | &instance->ao_control_task, 1); |
| 1841 | |
| 1842 | if (start_mode == ME_START_MODE_BLOCKING) { //Wait for start. |
| 1843 | ref = jiffies; |
| 1844 | //Only runing process will interrupt this call. Events are signaled when status change. Extra timeout add for safe reason. |
| 1845 | wait_event_interruptible_timeout(instance->wait_queue, |
| 1846 | (instance->status != |
| 1847 | ao_status_stream_run_wait), |
| 1848 | (delay) ? delay + |
| 1849 | 1 : LONG_MAX); |
| 1850 | |
| 1851 | if ((instance->status != ao_status_stream_run) |
| 1852 | && (instance->status != ao_status_stream_end)) { |
| 1853 | PDEBUG("Starting stream canceled. %d\n", |
| 1854 | instance->status); |
| 1855 | err = ME_ERRNO_CANCELLED; |
| 1856 | } |
| 1857 | |
| 1858 | if (signal_pending(current)) { |
| 1859 | PERROR("Wait on start of state machine interrupted.\n"); |
| 1860 | instance->status = ao_status_none; |
| 1861 | ao_stop_immediately(instance); |
| 1862 | err = ME_ERRNO_SIGNAL; |
| 1863 | } |
| 1864 | |
| 1865 | if ((delay) && ((jiffies - ref) >= delay)) { |
| 1866 | if (instance->status != ao_status_stream_run) { |
| 1867 | if (instance->status == ao_status_stream_end) { |
| 1868 | PDEBUG("Timeout reached.\n"); |
| 1869 | } else if ((jiffies - ref) > delay) { |
| 1870 | PERROR |
| 1871 | ("Timeout reached. Not handled by control task!\n"); |
| 1872 | ao_stop_immediately(instance); |
| 1873 | } else { |
| 1874 | PERROR |
| 1875 | ("Timeout reached. Signal come but status is strange: %d\n", |
| 1876 | instance->status); |
| 1877 | ao_stop_immediately(instance); |
| 1878 | } |
| 1879 | |
| 1880 | instance->ao_control_task_flag = 0; |
| 1881 | cancel_delayed_work(&instance->ao_control_task); |
| 1882 | instance->status = ao_status_stream_end; |
| 1883 | err = ME_ERRNO_TIMEOUT; |
| 1884 | } |
| 1885 | } |
| 1886 | } |
| 1887 | |
| 1888 | ME_SUBDEVICE_EXIT; |
| 1889 | return err; |
| 1890 | } |
| 1891 | |
| 1892 | static int me6000_ao_io_stream_status(me_subdevice_t * subdevice, |
| 1893 | struct file *filep, |
| 1894 | int wait, |
| 1895 | int *status, int *values, int flags) |
| 1896 | { |
| 1897 | me6000_ao_subdevice_t *instance; |
| 1898 | int err = ME_ERRNO_SUCCESS; |
| 1899 | |
| 1900 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 1901 | |
| 1902 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 1903 | |
| 1904 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { |
| 1905 | PERROR("Not a streaming ao.\n"); |
| 1906 | return ME_ERRNO_NOT_SUPPORTED; |
| 1907 | } |
| 1908 | |
| 1909 | if (flags) { |
| 1910 | PERROR("Invalid flag specified.\n"); |
| 1911 | return ME_ERRNO_INVALID_FLAGS; |
| 1912 | } |
| 1913 | |
| 1914 | if ((wait != ME_WAIT_NONE) && (wait != ME_WAIT_IDLE)) { |
| 1915 | PERROR("Invalid wait argument specified.\n"); |
| 1916 | *status = ME_STATUS_INVALID; |
| 1917 | return ME_ERRNO_INVALID_WAIT; |
| 1918 | } |
| 1919 | |
| 1920 | ME_SUBDEVICE_ENTER; |
| 1921 | |
| 1922 | switch (instance->status) { |
| 1923 | case ao_status_single_configured: |
| 1924 | case ao_status_single_end: |
| 1925 | case ao_status_stream_configured: |
| 1926 | case ao_status_stream_end: |
| 1927 | case ao_status_stream_fifo_error: |
| 1928 | case ao_status_stream_buffer_error: |
| 1929 | case ao_status_stream_error: |
| 1930 | *status = ME_STATUS_IDLE; |
| 1931 | break; |
| 1932 | |
| 1933 | case ao_status_single_run_wait: |
| 1934 | case ao_status_single_run: |
| 1935 | case ao_status_single_end_wait: |
| 1936 | case ao_status_stream_run_wait: |
| 1937 | case ao_status_stream_run: |
| 1938 | case ao_status_stream_end_wait: |
| 1939 | *status = ME_STATUS_BUSY; |
| 1940 | break; |
| 1941 | |
| 1942 | case ao_status_none: |
| 1943 | default: |
| 1944 | *status = |
| 1945 | (inl(instance->status_reg) & ME6000_AO_STATUS_BIT_FSM) ? |
| 1946 | ME_STATUS_BUSY : ME_STATUS_IDLE; |
| 1947 | break; |
| 1948 | } |
| 1949 | |
| 1950 | if ((wait == ME_WAIT_IDLE) && (*status == ME_STATUS_BUSY)) { |
| 1951 | //Only runing process will interrupt this call. Events are signaled when status change. Extra timeout add for safe reason. |
| 1952 | wait_event_interruptible_timeout(instance->wait_queue, |
| 1953 | ((instance->status != |
| 1954 | ao_status_single_run_wait) |
| 1955 | && (instance->status != |
| 1956 | ao_status_single_run) |
| 1957 | && (instance->status != |
| 1958 | ao_status_single_end_wait) |
| 1959 | && (instance->status != |
| 1960 | ao_status_stream_run_wait) |
| 1961 | && (instance->status != |
| 1962 | ao_status_stream_run) |
| 1963 | && (instance->status != |
| 1964 | ao_status_stream_end_wait)), |
| 1965 | LONG_MAX); |
| 1966 | |
| 1967 | if (instance->status != ao_status_stream_end) { |
| 1968 | PDEBUG("Wait for IDLE canceled. %d\n", |
| 1969 | instance->status); |
| 1970 | err = ME_ERRNO_CANCELLED; |
| 1971 | } |
| 1972 | |
| 1973 | if (signal_pending(current)) { |
| 1974 | PERROR("Wait for IDLE interrupted.\n"); |
| 1975 | instance->status = ao_status_none; |
| 1976 | ao_stop_immediately(instance); |
| 1977 | err = ME_ERRNO_SIGNAL; |
| 1978 | } |
| 1979 | |
| 1980 | *status = ME_STATUS_IDLE; |
| 1981 | } |
| 1982 | |
| 1983 | *values = me_circ_buf_space(&instance->circ_buf); |
| 1984 | |
| 1985 | ME_SUBDEVICE_EXIT; |
| 1986 | |
| 1987 | return err; |
| 1988 | } |
| 1989 | |
| 1990 | static int me6000_ao_io_stream_stop(me_subdevice_t * subdevice, |
| 1991 | struct file *filep, |
| 1992 | int stop_mode, int flags) |
| 1993 | { /// @note Stop work and empty buffer and FIFO |
| 1994 | int err = ME_ERRNO_SUCCESS; |
| 1995 | me6000_ao_subdevice_t *instance; |
| 1996 | unsigned long cpu_flags; |
| 1997 | volatile uint32_t ctrl; |
| 1998 | |
| 1999 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 2000 | |
| 2001 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 2002 | |
| 2003 | if (flags & ~ME_IO_STREAM_STOP_PRESERVE_BUFFERS) { |
| 2004 | PERROR("Invalid flag specified.\n"); |
| 2005 | return ME_ERRNO_INVALID_FLAGS; |
| 2006 | } |
| 2007 | |
| 2008 | if ((stop_mode != ME_STOP_MODE_IMMEDIATE) |
| 2009 | && (stop_mode != ME_STOP_MODE_LAST_VALUE)) { |
| 2010 | PERROR("Invalid stop mode specified.\n"); |
| 2011 | return ME_ERRNO_INVALID_STOP_MODE; |
| 2012 | } |
| 2013 | |
| 2014 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { |
| 2015 | PERROR("Not a streaming ao.\n"); |
| 2016 | return ME_ERRNO_NOT_SUPPORTED; |
| 2017 | } |
| 2018 | |
| 2019 | if (instance->status < ao_status_stream_configured) { |
| 2020 | //There is nothing to stop! |
| 2021 | PERROR("Subdevice not in streaming mode. %d\n", |
| 2022 | instance->status); |
| 2023 | return ME_ERRNO_PREVIOUS_CONFIG; |
| 2024 | } |
| 2025 | |
| 2026 | ME_SUBDEVICE_ENTER; |
| 2027 | |
| 2028 | //Mark as stopping. => Software stop. |
| 2029 | instance->status = ao_status_stream_end_wait; |
| 2030 | |
| 2031 | if (stop_mode == ME_STOP_MODE_IMMEDIATE) { //Stopped now! |
| 2032 | err = ao_stop_immediately(instance); |
| 2033 | } else if (stop_mode == ME_STOP_MODE_LAST_VALUE) { |
| 2034 | ctrl = inl(instance->ctrl_reg) & ME6000_AO_CTRL_MODE_MASK; |
| 2035 | if (ctrl == ME6000_AO_MODE_WRAPAROUND) { //Hardware wraparound => Hardware stop. |
| 2036 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 2037 | ctrl = inl(instance->ctrl_reg); |
| 2038 | ctrl |= ME6000_AO_CTRL_BIT_STOP; |
| 2039 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 2040 | outl(ctrl, instance->ctrl_reg); |
| 2041 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 2042 | instance->reg_base, |
| 2043 | instance->ctrl_reg - instance->reg_base, |
| 2044 | ctrl); |
| 2045 | spin_unlock_irqrestore(&instance->subdevice_lock, |
| 2046 | cpu_flags); |
| 2047 | |
| 2048 | //Reset interrupt latch |
| 2049 | inl(instance->irq_reset_reg); |
| 2050 | } |
| 2051 | //Only runing process will interrupt this call. Events are signaled when status change. Extra timeout add for safe reason. |
| 2052 | wait_event_interruptible_timeout(instance->wait_queue, |
| 2053 | (instance->status != |
| 2054 | ao_status_stream_end_wait), |
| 2055 | LONG_MAX); |
| 2056 | |
| 2057 | if (instance->status != ao_status_stream_end) { |
| 2058 | PDEBUG("Stopping stream canceled.\n"); |
| 2059 | err = ME_ERRNO_CANCELLED; |
| 2060 | } |
| 2061 | |
| 2062 | if (signal_pending(current)) { |
| 2063 | PERROR("Stopping stream interrupted.\n"); |
| 2064 | instance->status = ao_status_none; |
| 2065 | ao_stop_immediately(instance); |
| 2066 | err = ME_ERRNO_SIGNAL; |
| 2067 | } |
| 2068 | } |
| 2069 | |
| 2070 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 2071 | ctrl = inl(instance->ctrl_reg); |
| 2072 | ctrl |= ME6000_AO_CTRL_BIT_STOP | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP; |
| 2073 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 2074 | if (!flags) { //Reset FIFO |
| 2075 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_FIFO; |
| 2076 | } |
| 2077 | outl(ctrl, instance->ctrl_reg); |
| 2078 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 2079 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 2080 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 2081 | |
| 2082 | //Reset interrupt latch |
| 2083 | inl(instance->irq_reset_reg); |
| 2084 | |
| 2085 | if (!flags) { //Reset software buffer |
| 2086 | instance->circ_buf.head = 0; |
| 2087 | instance->circ_buf.tail = 0; |
| 2088 | instance->preloaded_count = 0; |
| 2089 | instance->data_count = 0; |
| 2090 | } |
| 2091 | |
| 2092 | ME_SUBDEVICE_EXIT; |
| 2093 | |
| 2094 | return err; |
| 2095 | } |
| 2096 | |
| 2097 | static int me6000_ao_io_stream_write(me_subdevice_t * subdevice, |
| 2098 | struct file *filep, |
| 2099 | int write_mode, |
| 2100 | int *values, int *count, int flags) |
| 2101 | { |
| 2102 | int err = ME_ERRNO_SUCCESS; |
| 2103 | me6000_ao_subdevice_t *instance; |
| 2104 | unsigned long cpu_flags = 0; |
| 2105 | uint32_t reg_copy; |
| 2106 | |
| 2107 | int copied_from_user = 0; |
| 2108 | int left_to_copy_from_user = *count; |
| 2109 | |
| 2110 | int copied_values; |
| 2111 | |
| 2112 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 2113 | |
| 2114 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 2115 | |
| 2116 | //Checking arguments |
| 2117 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { |
| 2118 | PERROR("Not a streaming ao.\n"); |
| 2119 | return ME_ERRNO_NOT_SUPPORTED; |
| 2120 | } |
| 2121 | |
| 2122 | if (flags) { |
| 2123 | PERROR("Invalid flag specified.\n"); |
| 2124 | return ME_ERRNO_INVALID_FLAGS; |
| 2125 | } |
| 2126 | |
| 2127 | if (*count <= 0) { |
| 2128 | PERROR("Invalid count of values specified.\n"); |
| 2129 | return ME_ERRNO_INVALID_VALUE_COUNT; |
| 2130 | } |
| 2131 | |
| 2132 | if (values == NULL) { |
| 2133 | PERROR("Invalid address of values specified.\n"); |
| 2134 | return ME_ERRNO_INVALID_POINTER; |
| 2135 | } |
| 2136 | |
| 2137 | if ((instance->status == ao_status_none) || (instance->status == ao_status_single_configured)) { //The device is in single mode. |
| 2138 | PERROR |
| 2139 | ("Subdevice must be preinitialize correctly for streaming.\n"); |
| 2140 | return ME_ERRNO_PREVIOUS_CONFIG; |
| 2141 | } |
| 2142 | |
| 2143 | switch (write_mode) { |
| 2144 | case ME_WRITE_MODE_PRELOAD: |
| 2145 | |
| 2146 | //Device must be stopped. |
| 2147 | if ((instance->status != ao_status_stream_configured) |
| 2148 | && (instance->status != ao_status_stream_end)) { |
| 2149 | PERROR |
| 2150 | ("Subdevice mustn't be runing when 'pre-load' mode is used.\n"); |
| 2151 | return ME_ERRNO_PREVIOUS_CONFIG; |
| 2152 | } |
| 2153 | break; |
| 2154 | case ME_WRITE_MODE_NONBLOCKING: |
| 2155 | case ME_WRITE_MODE_BLOCKING: |
| 2156 | /// @note In blocking mode: When device is not runing and there is not enought space call will blocked up! |
| 2157 | /// @note Some other thread must empty buffer by strating engine. |
| 2158 | break; |
| 2159 | |
| 2160 | default: |
| 2161 | PERROR("Invalid write mode specified.\n"); |
| 2162 | return ME_ERRNO_INVALID_WRITE_MODE; |
| 2163 | } |
| 2164 | |
| 2165 | if (instance->mode & ME6000_AO_WRAP_MODE) { //Wraparound mode. Device must be stopped. |
| 2166 | if ((instance->status != ao_status_stream_configured) |
| 2167 | && (instance->status != ao_status_stream_end)) { |
| 2168 | PERROR |
| 2169 | ("Subdevice mustn't be runing when 'pre-load' mode is used.\n"); |
| 2170 | return ME_ERRNO_INVALID_WRITE_MODE; |
| 2171 | } |
| 2172 | } |
| 2173 | |
| 2174 | if ((instance->mode == ME6000_AO_HW_WRAP_MODE) |
| 2175 | && (write_mode != ME_WRITE_MODE_PRELOAD)) { |
| 2176 | /* |
| 2177 | PERROR("Only 'pre-load' write is acceptable in hardware wraparound mode.\n"); |
| 2178 | return ME_ERRNO_PREVIOUS_CONFIG; |
| 2179 | */ |
| 2180 | //This is transparent for user. |
| 2181 | PDEBUG("Changing write_mode to ME_WRITE_MODE_PRELOAD.\n"); |
| 2182 | write_mode = ME_WRITE_MODE_PRELOAD; |
| 2183 | } |
| 2184 | |
| 2185 | ME_SUBDEVICE_ENTER; |
| 2186 | |
| 2187 | if (write_mode == ME_WRITE_MODE_PRELOAD) { //Init enviroment - preload |
| 2188 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 2189 | reg_copy = inl(instance->ctrl_reg); |
| 2190 | //Check FIFO |
| 2191 | if (!(reg_copy & ME6000_AO_CTRL_BIT_ENABLE_FIFO)) { //FIFO not active. Enable it. |
| 2192 | reg_copy |= ME6000_AO_CTRL_BIT_ENABLE_FIFO; |
| 2193 | outl(reg_copy, instance->ctrl_reg); |
| 2194 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 2195 | instance->reg_base, |
| 2196 | instance->ctrl_reg - instance->reg_base, |
| 2197 | reg_copy); |
| 2198 | instance->preloaded_count = 0; |
| 2199 | } |
| 2200 | spin_unlock_irqrestore(&instance->subdevice_lock, cpu_flags); |
| 2201 | } |
| 2202 | |
| 2203 | while (1) { |
| 2204 | //Copy to buffer. This step is common for all modes. |
| 2205 | copied_from_user = |
| 2206 | ao_get_data_from_user(instance, left_to_copy_from_user, |
| 2207 | values + (*count - |
| 2208 | left_to_copy_from_user)); |
| 2209 | left_to_copy_from_user -= copied_from_user; |
| 2210 | |
| 2211 | reg_copy = inl(instance->status_reg); |
| 2212 | if ((instance->status == ao_status_stream_run) && !(reg_copy & ME6000_AO_STATUS_BIT_FSM)) { //BROKEN PIPE! The state machine is stoped but logical status show that should be working. |
| 2213 | PERROR("Broken pipe in write.\n"); |
| 2214 | err = ME_ERRNO_SUBDEVICE_NOT_RUNNING; |
| 2215 | break; |
| 2216 | } |
| 2217 | |
| 2218 | if ((instance->status == ao_status_stream_run) && (instance->mode == ME6000_AO_CONTINOUS) && (reg_copy & ME6000_AO_STATUS_BIT_HF)) { //Continous mode runing and data are below half! |
| 2219 | |
| 2220 | // Block interrupts. |
| 2221 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 2222 | reg_copy = inl(instance->ctrl_reg); |
| 2223 | reg_copy &= ~ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 2224 | outl(reg_copy, instance->ctrl_reg); |
| 2225 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 2226 | instance->reg_base, |
| 2227 | instance->ctrl_reg - instance->reg_base, |
| 2228 | reg_copy); |
| 2229 | spin_unlock_irqrestore(&instance->subdevice_lock, |
| 2230 | cpu_flags); |
| 2231 | |
| 2232 | //Fast copy |
| 2233 | copied_values = |
| 2234 | ao_write_data(instance, ME6000_AO_FIFO_COUNT / 2, |
| 2235 | 0); |
| 2236 | if (copied_values > 0) { |
| 2237 | instance->circ_buf.tail += copied_values; |
| 2238 | instance->circ_buf.tail &= |
| 2239 | instance->circ_buf.mask; |
| 2240 | continue; |
| 2241 | } |
| 2242 | //Reset interrupt latch |
| 2243 | inl(instance->irq_reset_reg); |
| 2244 | |
| 2245 | // Activate interrupts. |
| 2246 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 2247 | reg_copy = inl(instance->ctrl_reg); |
| 2248 | reg_copy |= ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 2249 | outl(reg_copy, instance->ctrl_reg); |
| 2250 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 2251 | instance->reg_base, |
| 2252 | instance->ctrl_reg - instance->reg_base, |
| 2253 | reg_copy); |
| 2254 | spin_unlock_irqrestore(&instance->subdevice_lock, |
| 2255 | cpu_flags); |
| 2256 | |
| 2257 | if (copied_values == 0) { //This was checked and never should happend! |
| 2258 | PERROR_CRITICAL("COPY FINISH WITH 0!\n"); |
| 2259 | } |
| 2260 | |
| 2261 | if (copied_values < 0) { //This was checked and never should happend! |
| 2262 | PERROR_CRITICAL("COPY FINISH WITH ERROR!\n"); |
| 2263 | instance->status = ao_status_stream_fifo_error; |
| 2264 | err = ME_ERRNO_FIFO_BUFFER_OVERFLOW; |
| 2265 | break; |
| 2266 | } |
| 2267 | } |
| 2268 | |
| 2269 | if (!left_to_copy_from_user) { //All datas were copied. |
| 2270 | break; |
| 2271 | } else { //Not all datas were copied. |
| 2272 | if (instance->mode & ME6000_AO_WRAP_MODE) { //Error too much datas! Wraparound is limited in size! |
| 2273 | PERROR |
| 2274 | ("Too much data for wraparound mode! Exceeded size of %ld.\n", |
| 2275 | ME6000_AO_CIRC_BUF_COUNT - 1); |
| 2276 | err = ME_ERRNO_RING_BUFFER_OVERFLOW; |
| 2277 | break; |
| 2278 | } |
| 2279 | |
| 2280 | if (write_mode != ME_WRITE_MODE_BLOCKING) { //Non blocking calls |
| 2281 | break; |
| 2282 | } |
| 2283 | |
| 2284 | wait_event_interruptible(instance->wait_queue, |
| 2285 | me_circ_buf_space(&instance-> |
| 2286 | circ_buf)); |
| 2287 | |
| 2288 | if (signal_pending(current)) { |
| 2289 | PERROR("Writing interrupted by signal.\n"); |
| 2290 | instance->status = ao_status_none; |
| 2291 | ao_stop_immediately(instance); |
| 2292 | err = ME_ERRNO_SIGNAL; |
| 2293 | break; |
| 2294 | } |
| 2295 | |
| 2296 | if (instance->status == ao_status_none) { //Reset |
| 2297 | PERROR("Writing interrupted by reset.\n"); |
| 2298 | err = ME_ERRNO_CANCELLED; |
| 2299 | break; |
| 2300 | } |
| 2301 | } |
| 2302 | } |
| 2303 | |
| 2304 | if (write_mode == ME_WRITE_MODE_PRELOAD) { //Copy data to FIFO - preload |
| 2305 | copied_values = |
| 2306 | ao_write_data_pooling(instance, ME6000_AO_FIFO_COUNT, |
| 2307 | instance->preloaded_count); |
| 2308 | instance->preloaded_count += copied_values; |
| 2309 | instance->data_count += copied_values; |
| 2310 | |
| 2311 | if ((instance->mode == ME6000_AO_HW_WRAP_MODE) |
| 2312 | && (me_circ_buf_values(&instance->circ_buf) > |
| 2313 | ME6000_AO_FIFO_COUNT)) { |
| 2314 | PERROR |
| 2315 | ("Too much data for hardware wraparound mode! Exceeded size of %d.\n", |
| 2316 | ME6000_AO_FIFO_COUNT); |
| 2317 | err = ME_ERRNO_FIFO_BUFFER_OVERFLOW; |
| 2318 | } |
| 2319 | } |
| 2320 | |
| 2321 | *count = *count - left_to_copy_from_user; |
| 2322 | ME_SUBDEVICE_EXIT; |
| 2323 | |
| 2324 | return err; |
| 2325 | } |
| 2326 | |
| 2327 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 19) |
| 2328 | static irqreturn_t me6000_ao_isr(int irq, void *dev_id) |
| 2329 | #else |
| 2330 | static irqreturn_t me6000_ao_isr(int irq, void *dev_id, struct pt_regs *regs) |
| 2331 | #endif |
| 2332 | { |
| 2333 | me6000_ao_subdevice_t *instance = dev_id; |
| 2334 | uint32_t irq_status; |
| 2335 | uint32_t ctrl; |
| 2336 | uint32_t status; |
| 2337 | int count = 0; |
| 2338 | |
| 2339 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 2340 | |
| 2341 | if (irq != instance->irq) { |
| 2342 | PERROR("Incorrect interrupt num: %d.\n", irq); |
| 2343 | return IRQ_NONE; |
| 2344 | } |
| 2345 | |
| 2346 | irq_status = inl(instance->irq_status_reg); |
| 2347 | if (!(irq_status & (ME6000_IRQ_STATUS_BIT_AO_HF << instance->ao_idx))) { |
| 2348 | PINFO("%ld Shared interrupt. %s(): ID=%d: status_reg=0x%04X\n", |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 2349 | jiffies, __func__, instance->ao_idx, irq_status); |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 2350 | return IRQ_NONE; |
| 2351 | } |
| 2352 | |
| 2353 | if (!instance->circ_buf.buf) { |
| 2354 | instance->status = ao_status_stream_error; |
| 2355 | PERROR_CRITICAL("CIRCULAR BUFFER NOT EXISTS!\n"); |
| 2356 | //Block interrupts. Stop machine. |
| 2357 | ctrl = inl(instance->ctrl_reg); |
| 2358 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 2359 | ctrl |= |
| 2360 | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP | ME6000_AO_CTRL_BIT_STOP; |
| 2361 | outl(ctrl, instance->ctrl_reg); |
| 2362 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 2363 | instance->reg_base, |
| 2364 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 2365 | |
| 2366 | //Inform user |
| 2367 | wake_up_interruptible_all(&instance->wait_queue); |
| 2368 | return IRQ_HANDLED; |
| 2369 | } |
| 2370 | |
| 2371 | status = inl(instance->status_reg); |
| 2372 | if (!(status & ME6000_AO_STATUS_BIT_FSM)) { //Too late. Not working! END? BROKEN PIPE? |
| 2373 | /// @note Error checking was moved to separate task. |
| 2374 | PDEBUG("Interrupt come but ISM is not working!\n"); |
| 2375 | //Block interrupts. Stop machine. |
| 2376 | ctrl = inl(instance->ctrl_reg); |
| 2377 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 2378 | ctrl |= |
| 2379 | ME6000_AO_CTRL_BIT_STOP | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP; |
| 2380 | outl(ctrl, instance->ctrl_reg); |
| 2381 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 2382 | instance->reg_base, |
| 2383 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 2384 | |
| 2385 | //Reset interrupt latch |
| 2386 | inl(instance->irq_reset_reg); |
| 2387 | |
| 2388 | /// @note User notification was also moved to separate task. |
| 2389 | return IRQ_HANDLED; |
| 2390 | } |
| 2391 | //General procedure. Process more datas. |
| 2392 | |
| 2393 | #ifdef MEDEBUG_DEBUG |
| 2394 | if (!me_circ_buf_values(&instance->circ_buf)) { //Buffer is empty! |
| 2395 | PDEBUG("Circular buffer empty!\n"); |
| 2396 | } |
| 2397 | #endif |
| 2398 | |
| 2399 | //Check FIFO |
| 2400 | if (status & ME6000_AO_STATUS_BIT_HF) { //OK less than half |
| 2401 | |
| 2402 | //Block interrupts |
| 2403 | ctrl = inl(instance->ctrl_reg); |
| 2404 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 2405 | outl(ctrl, instance->ctrl_reg); |
| 2406 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 2407 | instance->reg_base, |
| 2408 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 2409 | |
| 2410 | do { |
| 2411 | //Calculate how many should be copied. |
| 2412 | count = |
| 2413 | (instance->stop_data_count) ? instance-> |
| 2414 | stop_data_count - |
| 2415 | instance->data_count : ME6000_AO_FIFO_COUNT / 2; |
| 2416 | if (ME6000_AO_FIFO_COUNT / 2 < count) { |
| 2417 | count = ME6000_AO_FIFO_COUNT / 2; |
| 2418 | } |
| 2419 | //Copy data |
| 2420 | if (instance->mode == ME6000_AO_CONTINOUS) { //Continous |
| 2421 | count = ao_write_data(instance, count, 0); |
| 2422 | if (count > 0) { |
| 2423 | instance->circ_buf.tail += count; |
| 2424 | instance->circ_buf.tail &= |
| 2425 | instance->circ_buf.mask; |
| 2426 | instance->data_count += count; |
| 2427 | |
| 2428 | if ((instance->status == ao_status_stream_end_wait) && !me_circ_buf_values(&instance->circ_buf)) { //Stoping. Whole buffer was copied. |
| 2429 | break; |
| 2430 | } |
| 2431 | } |
| 2432 | } else if ((instance->mode == ME6000_AO_SW_WRAP_MODE) && ((ctrl & ME6000_AO_CTRL_MODE_MASK) == ME6000_AO_MODE_CONTINUOUS)) { //Wraparound (software) |
| 2433 | if (instance->status == ao_status_stream_end_wait) { //We stoping => Copy to the end of the buffer. |
| 2434 | count = |
| 2435 | ao_write_data(instance, count, 0); |
| 2436 | } else { //Copy in wraparound mode. |
| 2437 | count = |
| 2438 | ao_write_data_wraparound(instance, |
| 2439 | count, |
| 2440 | instance-> |
| 2441 | preloaded_count); |
| 2442 | } |
| 2443 | |
| 2444 | if (count > 0) { |
| 2445 | instance->data_count += count; |
| 2446 | instance->preloaded_count += count; |
| 2447 | instance->preloaded_count %= |
| 2448 | me_circ_buf_values(&instance-> |
| 2449 | circ_buf); |
| 2450 | |
| 2451 | if ((instance->status == ao_status_stream_end_wait) && !instance->preloaded_count) { //Stoping. Whole buffer was copied. |
| 2452 | break; |
| 2453 | } |
| 2454 | } |
| 2455 | } |
| 2456 | |
| 2457 | if ((count <= 0) || (instance->stop_data_count && (instance->stop_data_count <= instance->data_count))) { //End of work. |
| 2458 | break; |
| 2459 | } |
| 2460 | } //Repeat if still is under half fifo |
| 2461 | while ((status = |
| 2462 | inl(instance->status_reg)) & ME6000_AO_STATUS_BIT_HF); |
| 2463 | |
| 2464 | //Unblock interrupts |
| 2465 | ctrl = inl(instance->ctrl_reg); |
| 2466 | if (count >= 0) { //Copy was successful. |
| 2467 | if (instance->stop_data_count && (instance->stop_data_count <= instance->data_count)) { //Finishing work. No more interrupts. |
| 2468 | PDEBUG("Finishing work. Interrupt disabled.\n"); |
| 2469 | instance->status = ao_status_stream_end_wait; |
| 2470 | } else if (count > 0) { //Normal work. Enable interrupt. |
| 2471 | PDEBUG("Normal work. Enable interrupt.\n"); |
| 2472 | ctrl |= ME6000_AO_CTRL_BIT_ENABLE_IRQ; |
| 2473 | } else { //Normal work but there are no more data in buffer. Interrupt blocked. stream_write() will unblock it. |
| 2474 | PDEBUG |
| 2475 | ("No data in software buffer. Interrupt blocked.\n"); |
| 2476 | } |
| 2477 | } else { //Error during copy. |
| 2478 | instance->status = ao_status_stream_fifo_error; |
| 2479 | } |
| 2480 | |
| 2481 | outl(ctrl, instance->ctrl_reg); |
| 2482 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 2483 | instance->reg_base, |
| 2484 | instance->ctrl_reg - instance->reg_base, ctrl); |
| 2485 | } else { //?? more than half |
| 2486 | PDEBUG |
| 2487 | ("Interrupt come but FIFO more than half full! Reset interrupt.\n"); |
| 2488 | } |
| 2489 | |
| 2490 | PINFO("ISR: Buffer count: %d.(T:%d H:%d)\n", |
| 2491 | me_circ_buf_values(&instance->circ_buf), instance->circ_buf.tail, |
| 2492 | instance->circ_buf.head); |
| 2493 | PINFO("ISR: Stop count: %d.\n", instance->stop_count); |
| 2494 | PINFO("ISR: Stop data count: %d.\n", instance->stop_data_count); |
| 2495 | PINFO("ISR: Data count: %d.\n", instance->data_count); |
| 2496 | |
| 2497 | //Reset interrupt latch |
| 2498 | inl(instance->irq_reset_reg); |
| 2499 | |
| 2500 | //Inform user |
| 2501 | wake_up_interruptible_all(&instance->wait_queue); |
| 2502 | |
| 2503 | return IRQ_HANDLED; |
| 2504 | } |
| 2505 | |
| 2506 | static void me6000_ao_destructor(struct me_subdevice *subdevice) |
| 2507 | { |
| 2508 | me6000_ao_subdevice_t *instance; |
| 2509 | |
| 2510 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 2511 | |
| 2512 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 2513 | |
| 2514 | instance->ao_control_task_flag = 0; |
| 2515 | |
| 2516 | // Reset subdevice to asure clean exit. |
| 2517 | me6000_ao_io_reset_subdevice(subdevice, NULL, |
| 2518 | ME_IO_RESET_SUBDEVICE_NO_FLAGS); |
| 2519 | |
| 2520 | // Remove any tasks from work queue. This is paranoic because it was done allready in reset(). |
| 2521 | if (!cancel_delayed_work(&instance->ao_control_task)) { //Wait 2 ticks to be sure that control task is removed from queue. |
| 2522 | set_current_state(TASK_INTERRUPTIBLE); |
| 2523 | schedule_timeout(2); |
| 2524 | } |
| 2525 | |
| 2526 | if (instance->fifo & ME6000_AO_HAS_FIFO) { |
| 2527 | if (instance->irq) { |
| 2528 | free_irq(instance->irq, instance); |
| 2529 | instance->irq = 0; |
| 2530 | } |
| 2531 | |
| 2532 | if (instance->circ_buf.buf) { |
| 2533 | PDEBUG("free circ_buf = %p size=%d", |
| 2534 | instance->circ_buf.buf, |
| 2535 | PAGE_SHIFT << ME6000_AO_CIRC_BUF_SIZE_ORDER); |
| 2536 | free_pages((unsigned long)instance->circ_buf.buf, |
| 2537 | ME6000_AO_CIRC_BUF_SIZE_ORDER); |
| 2538 | } |
| 2539 | instance->circ_buf.buf = NULL; |
| 2540 | } |
| 2541 | |
| 2542 | me_subdevice_deinit(&instance->base); |
| 2543 | kfree(instance); |
| 2544 | } |
| 2545 | |
| 2546 | me6000_ao_subdevice_t *me6000_ao_constructor(uint32_t reg_base, |
| 2547 | spinlock_t * preload_reg_lock, |
| 2548 | uint32_t * preload_flags, |
| 2549 | uint32_t * triggering_flags, |
| 2550 | int ao_idx, |
| 2551 | int fifo, |
| 2552 | int irq, |
| 2553 | int high_range, |
| 2554 | struct workqueue_struct *me6000_wq) |
| 2555 | { |
| 2556 | me6000_ao_subdevice_t *subdevice; |
| 2557 | int err; |
| 2558 | |
| 2559 | PDEBUG("executed ID=%d.\n", ao_idx); |
| 2560 | |
| 2561 | /* Allocate memory for subdevice instance */ |
| 2562 | subdevice = kmalloc(sizeof(me6000_ao_subdevice_t), GFP_KERNEL); |
| 2563 | |
| 2564 | if (!subdevice) { |
| 2565 | PERROR("Cannot get memory for subdevice instance.\n"); |
| 2566 | return NULL; |
| 2567 | } |
| 2568 | |
| 2569 | memset(subdevice, 0, sizeof(me6000_ao_subdevice_t)); |
| 2570 | |
| 2571 | /* Initialize subdevice base class */ |
| 2572 | err = me_subdevice_init(&subdevice->base); |
| 2573 | |
| 2574 | if (err) { |
| 2575 | PERROR("Cannot initialize subdevice base class instance.\n"); |
| 2576 | kfree(subdevice); |
| 2577 | return NULL; |
| 2578 | } |
| 2579 | // Initialize spin locks. |
| 2580 | spin_lock_init(&subdevice->subdevice_lock); |
| 2581 | |
| 2582 | subdevice->preload_reg_lock = preload_reg_lock; |
| 2583 | subdevice->preload_flags = preload_flags; |
| 2584 | subdevice->triggering_flags = triggering_flags; |
| 2585 | |
| 2586 | /* Store analog output index */ |
| 2587 | subdevice->ao_idx = ao_idx; |
| 2588 | |
| 2589 | /* Store if analog output has fifo */ |
| 2590 | subdevice->fifo = fifo; |
| 2591 | |
| 2592 | if (subdevice->fifo & ME6000_AO_HAS_FIFO) { |
| 2593 | /* Allocate and initialize circular buffer */ |
| 2594 | subdevice->circ_buf.mask = ME6000_AO_CIRC_BUF_COUNT - 1; |
| 2595 | subdevice->circ_buf.buf = |
| 2596 | (void *)__get_free_pages(GFP_KERNEL, |
| 2597 | ME6000_AO_CIRC_BUF_SIZE_ORDER); |
| 2598 | PDEBUG("circ_buf = %p size=%ld\n", subdevice->circ_buf.buf, |
| 2599 | ME6000_AO_CIRC_BUF_SIZE); |
| 2600 | |
| 2601 | if (!subdevice->circ_buf.buf) { |
| 2602 | PERROR |
| 2603 | ("Cannot initialize subdevice base class instance.\n"); |
| 2604 | kfree(subdevice); |
| 2605 | return NULL; |
| 2606 | } |
| 2607 | |
| 2608 | memset(subdevice->circ_buf.buf, 0, ME6000_AO_CIRC_BUF_SIZE); |
| 2609 | } else { |
| 2610 | subdevice->circ_buf.mask = 0; |
| 2611 | subdevice->circ_buf.buf = NULL; |
| 2612 | } |
| 2613 | subdevice->circ_buf.head = 0; |
| 2614 | subdevice->circ_buf.tail = 0; |
| 2615 | |
| 2616 | subdevice->status = ao_status_none; |
| 2617 | subdevice->ao_control_task_flag = 0; |
| 2618 | subdevice->timeout.delay = 0; |
| 2619 | subdevice->timeout.start_time = jiffies; |
| 2620 | |
| 2621 | /* Initialize wait queue */ |
| 2622 | init_waitqueue_head(&subdevice->wait_queue); |
| 2623 | |
| 2624 | /* Initialize single value to 0V */ |
| 2625 | subdevice->single_value = 0x8000; |
| 2626 | subdevice->single_value_in_fifo = 0x8000; |
| 2627 | |
| 2628 | /* Initialize range boarders */ |
| 2629 | if (high_range) { |
| 2630 | subdevice->min = ME6000_AO_MIN_RANGE_HIGH; |
| 2631 | subdevice->max = ME6000_AO_MAX_RANGE_HIGH; |
| 2632 | } else { |
| 2633 | subdevice->min = ME6000_AO_MIN_RANGE; |
| 2634 | subdevice->max = ME6000_AO_MAX_RANGE; |
| 2635 | } |
| 2636 | |
| 2637 | /* Register interrupt service routine */ |
| 2638 | |
| 2639 | if (subdevice->fifo & ME6000_AO_HAS_FIFO) { |
| 2640 | subdevice->irq = irq; |
| 2641 | if (request_irq(subdevice->irq, me6000_ao_isr, |
| 2642 | #ifdef IRQF_DISABLED |
| 2643 | IRQF_DISABLED | IRQF_SHARED, |
| 2644 | #else |
| 2645 | SA_INTERRUPT | SA_SHIRQ, |
| 2646 | #endif |
| 2647 | ME6000_NAME, subdevice)) { |
| 2648 | PERROR("Cannot get interrupt line.\n"); |
| 2649 | PDEBUG("free circ_buf = %p size=%d", |
| 2650 | subdevice->circ_buf.buf, |
| 2651 | PAGE_SHIFT << ME6000_AO_CIRC_BUF_SIZE_ORDER); |
| 2652 | free_pages((unsigned long)subdevice->circ_buf.buf, |
| 2653 | ME6000_AO_CIRC_BUF_SIZE_ORDER); |
| 2654 | subdevice->circ_buf.buf = NULL; |
| 2655 | kfree(subdevice); |
| 2656 | return NULL; |
| 2657 | } |
| 2658 | PINFO("Registered irq=%d.\n", subdevice->irq); |
| 2659 | } else { |
| 2660 | subdevice->irq = 0; |
| 2661 | } |
| 2662 | |
| 2663 | /* Initialize registers */ |
| 2664 | // Only streamed subdevices support interrupts. For the rest this register has no meaning. |
| 2665 | subdevice->irq_status_reg = reg_base + ME6000_AO_IRQ_STATUS_REG; |
| 2666 | subdevice->preload_reg = reg_base + ME6000_AO_PRELOAD_REG; |
| 2667 | |
| 2668 | if (ao_idx == 0) { |
| 2669 | subdevice->ctrl_reg = reg_base + ME6000_AO_00_CTRL_REG; |
| 2670 | subdevice->status_reg = reg_base + ME6000_AO_00_STATUS_REG; |
| 2671 | subdevice->fifo_reg = reg_base + ME6000_AO_00_FIFO_REG; |
| 2672 | subdevice->timer_reg = reg_base + ME6000_AO_00_TIMER_REG; |
| 2673 | subdevice->irq_reset_reg = |
| 2674 | reg_base + ME6000_AO_00_IRQ_RESET_REG; |
| 2675 | subdevice->single_reg = reg_base + ME6000_AO_00_SINGLE_REG; |
| 2676 | } else if (ao_idx == 1) { |
| 2677 | subdevice->ctrl_reg = reg_base + ME6000_AO_01_CTRL_REG; |
| 2678 | subdevice->status_reg = reg_base + ME6000_AO_01_STATUS_REG; |
| 2679 | subdevice->fifo_reg = reg_base + ME6000_AO_01_FIFO_REG; |
| 2680 | subdevice->timer_reg = reg_base + ME6000_AO_01_TIMER_REG; |
| 2681 | subdevice->irq_reset_reg = |
| 2682 | reg_base + ME6000_AO_01_IRQ_RESET_REG; |
| 2683 | subdevice->single_reg = reg_base + ME6000_AO_01_SINGLE_REG; |
| 2684 | } else if (ao_idx == 2) { |
| 2685 | subdevice->ctrl_reg = reg_base + ME6000_AO_02_CTRL_REG; |
| 2686 | subdevice->status_reg = reg_base + ME6000_AO_02_STATUS_REG; |
| 2687 | subdevice->fifo_reg = reg_base + ME6000_AO_02_FIFO_REG; |
| 2688 | subdevice->timer_reg = reg_base + ME6000_AO_02_TIMER_REG; |
| 2689 | subdevice->irq_reset_reg = |
| 2690 | reg_base + ME6000_AO_02_IRQ_RESET_REG; |
| 2691 | subdevice->single_reg = reg_base + ME6000_AO_02_SINGLE_REG; |
| 2692 | } else if (ao_idx == 3) { |
| 2693 | subdevice->ctrl_reg = reg_base + ME6000_AO_03_CTRL_REG; |
| 2694 | subdevice->status_reg = reg_base + ME6000_AO_03_STATUS_REG; |
| 2695 | subdevice->fifo_reg = reg_base + ME6000_AO_03_FIFO_REG; |
| 2696 | subdevice->timer_reg = reg_base + ME6000_AO_03_TIMER_REG; |
| 2697 | subdevice->irq_reset_reg = |
| 2698 | reg_base + ME6000_AO_03_IRQ_RESET_REG; |
| 2699 | subdevice->single_reg = reg_base + ME6000_AO_03_SINGLE_REG; |
| 2700 | } else { |
| 2701 | subdevice->ctrl_reg = reg_base + ME6000_AO_DUMY; |
| 2702 | subdevice->fifo_reg = reg_base + ME6000_AO_DUMY; |
| 2703 | subdevice->timer_reg = reg_base + ME6000_AO_DUMY; |
| 2704 | subdevice->irq_reset_reg = reg_base + ME6000_AO_DUMY; |
| 2705 | subdevice->single_reg = reg_base + ME6000_AO_DUMY; |
| 2706 | |
| 2707 | subdevice->status_reg = reg_base + ME6000_AO_SINGLE_STATUS_REG; |
| 2708 | if (ao_idx == 4) { |
| 2709 | subdevice->single_reg = |
| 2710 | reg_base + ME6000_AO_04_SINGLE_REG; |
| 2711 | } else if (ao_idx == 5) { |
| 2712 | subdevice->single_reg = |
| 2713 | reg_base + ME6000_AO_05_SINGLE_REG; |
| 2714 | } else if (ao_idx == 6) { |
| 2715 | subdevice->single_reg = |
| 2716 | reg_base + ME6000_AO_06_SINGLE_REG; |
| 2717 | } else if (ao_idx == 7) { |
| 2718 | subdevice->single_reg = |
| 2719 | reg_base + ME6000_AO_07_SINGLE_REG; |
| 2720 | } else if (ao_idx == 8) { |
| 2721 | subdevice->single_reg = |
| 2722 | reg_base + ME6000_AO_08_SINGLE_REG; |
| 2723 | } else if (ao_idx == 9) { |
| 2724 | subdevice->single_reg = |
| 2725 | reg_base + ME6000_AO_09_SINGLE_REG; |
| 2726 | } else if (ao_idx == 10) { |
| 2727 | subdevice->single_reg = |
| 2728 | reg_base + ME6000_AO_10_SINGLE_REG; |
| 2729 | } else if (ao_idx == 11) { |
| 2730 | subdevice->single_reg = |
| 2731 | reg_base + ME6000_AO_11_SINGLE_REG; |
| 2732 | } else if (ao_idx == 12) { |
| 2733 | subdevice->single_reg = |
| 2734 | reg_base + ME6000_AO_12_SINGLE_REG; |
| 2735 | } else if (ao_idx == 13) { |
| 2736 | subdevice->single_reg = |
| 2737 | reg_base + ME6000_AO_13_SINGLE_REG; |
| 2738 | } else if (ao_idx == 14) { |
| 2739 | subdevice->single_reg = |
| 2740 | reg_base + ME6000_AO_14_SINGLE_REG; |
| 2741 | } else if (ao_idx == 15) { |
| 2742 | subdevice->single_reg = |
| 2743 | reg_base + ME6000_AO_15_SINGLE_REG; |
| 2744 | } else { |
| 2745 | PERROR_CRITICAL("WRONG SUBDEVICE ID=%d!", ao_idx); |
| 2746 | me_subdevice_deinit((me_subdevice_t *) subdevice); |
| 2747 | if (subdevice->fifo) { |
| 2748 | free_pages((unsigned long)subdevice->circ_buf. |
| 2749 | buf, ME6000_AO_CIRC_BUF_SIZE_ORDER); |
| 2750 | } |
| 2751 | subdevice->circ_buf.buf = NULL; |
| 2752 | kfree(subdevice); |
| 2753 | return NULL; |
| 2754 | } |
| 2755 | } |
| 2756 | #ifdef MEDEBUG_DEBUG_REG |
| 2757 | subdevice->reg_base = reg_base; |
| 2758 | #endif |
| 2759 | |
| 2760 | /* Override base class methods. */ |
| 2761 | subdevice->base.me_subdevice_destructor = me6000_ao_destructor; |
| 2762 | subdevice->base.me_subdevice_io_reset_subdevice = |
| 2763 | me6000_ao_io_reset_subdevice; |
| 2764 | subdevice->base.me_subdevice_io_single_config = |
| 2765 | me6000_ao_io_single_config; |
| 2766 | subdevice->base.me_subdevice_io_single_read = me6000_ao_io_single_read; |
| 2767 | subdevice->base.me_subdevice_io_single_write = |
| 2768 | me6000_ao_io_single_write; |
| 2769 | subdevice->base.me_subdevice_io_stream_config = |
| 2770 | me6000_ao_io_stream_config; |
| 2771 | subdevice->base.me_subdevice_io_stream_new_values = |
| 2772 | me6000_ao_io_stream_new_values; |
| 2773 | subdevice->base.me_subdevice_io_stream_write = |
| 2774 | me6000_ao_io_stream_write; |
| 2775 | subdevice->base.me_subdevice_io_stream_start = |
| 2776 | me6000_ao_io_stream_start; |
| 2777 | subdevice->base.me_subdevice_io_stream_status = |
| 2778 | me6000_ao_io_stream_status; |
| 2779 | subdevice->base.me_subdevice_io_stream_stop = me6000_ao_io_stream_stop; |
| 2780 | subdevice->base.me_subdevice_query_number_channels = |
| 2781 | me6000_ao_query_number_channels; |
| 2782 | subdevice->base.me_subdevice_query_subdevice_type = |
| 2783 | me6000_ao_query_subdevice_type; |
| 2784 | subdevice->base.me_subdevice_query_subdevice_caps = |
| 2785 | me6000_ao_query_subdevice_caps; |
| 2786 | subdevice->base.me_subdevice_query_subdevice_caps_args = |
| 2787 | me6000_ao_query_subdevice_caps_args; |
| 2788 | subdevice->base.me_subdevice_query_range_by_min_max = |
| 2789 | me6000_ao_query_range_by_min_max; |
| 2790 | subdevice->base.me_subdevice_query_number_ranges = |
| 2791 | me6000_ao_query_number_ranges; |
| 2792 | subdevice->base.me_subdevice_query_range_info = |
| 2793 | me6000_ao_query_range_info; |
| 2794 | subdevice->base.me_subdevice_query_timer = me6000_ao_query_timer; |
| 2795 | |
| 2796 | //prepare work queue and work function |
| 2797 | subdevice->me6000_workqueue = me6000_wq; |
| 2798 | |
| 2799 | /* workqueue API changed in kernel 2.6.20 */ |
| 2800 | #if ( LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) ) |
| 2801 | INIT_WORK(&subdevice->ao_control_task, me6000_ao_work_control_task, |
| 2802 | (void *)subdevice); |
| 2803 | #else |
| 2804 | INIT_DELAYED_WORK(&subdevice->ao_control_task, |
| 2805 | me6000_ao_work_control_task); |
| 2806 | #endif |
| 2807 | |
| 2808 | if (subdevice->fifo) { //Set speed |
| 2809 | outl(ME6000_AO_MIN_CHAN_TICKS - 1, subdevice->timer_reg); |
| 2810 | subdevice->hardware_stop_delay = HZ / 10; //100ms |
| 2811 | } |
| 2812 | |
| 2813 | return subdevice; |
| 2814 | } |
| 2815 | |
| 2816 | /** @brief Stop presentation. Preserve FIFOs. |
| 2817 | * |
| 2818 | * @param instance The subdevice instance (pointer). |
| 2819 | */ |
| 2820 | int inline ao_stop_immediately(me6000_ao_subdevice_t * instance) |
| 2821 | { |
| 2822 | unsigned long cpu_flags; |
| 2823 | uint32_t ctrl; |
| 2824 | int timeout; |
| 2825 | int i; |
| 2826 | uint32_t single_mask; |
| 2827 | |
| 2828 | single_mask = |
| 2829 | (instance->ao_idx - ME6000_AO_SINGLE_STATUS_OFFSET < |
| 2830 | 0) ? 0x0000 : (0x0001 << (instance->ao_idx - |
| 2831 | ME6000_AO_SINGLE_STATUS_OFFSET)); |
| 2832 | |
| 2833 | timeout = |
| 2834 | (instance->hardware_stop_delay > |
| 2835 | (HZ / 10)) ? instance->hardware_stop_delay : HZ / 10; |
| 2836 | for (i = 0; i <= timeout; i++) { |
| 2837 | if (instance->fifo) { |
| 2838 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 2839 | // Stop all actions. No conditions! Block interrupts. Leave FIFO untouched! |
| 2840 | ctrl = inl(instance->ctrl_reg); |
| 2841 | ctrl |= |
| 2842 | ME6000_AO_CTRL_BIT_STOP | |
| 2843 | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP; |
| 2844 | ctrl &= |
| 2845 | ~(ME6000_AO_CTRL_BIT_ENABLE_IRQ | |
| 2846 | ME6000_AO_CTRL_BIT_ENABLE_EX_TRIG); |
| 2847 | outl(ctrl, instance->ctrl_reg); |
| 2848 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 2849 | instance->reg_base, |
| 2850 | instance->ctrl_reg - instance->reg_base, |
| 2851 | ctrl); |
| 2852 | spin_unlock_irqrestore(&instance->subdevice_lock, |
| 2853 | cpu_flags); |
| 2854 | |
| 2855 | if (!(inl(instance->status_reg) & ME6000_AO_STATUS_BIT_FSM)) { // Exit. |
| 2856 | break; |
| 2857 | } |
| 2858 | } else { |
| 2859 | if (!(inl(instance->status_reg) & single_mask)) { // Exit. |
| 2860 | break; |
| 2861 | } |
| 2862 | } |
| 2863 | |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 2864 | PINFO("<%s> Wait for stop: %d\n", __func__, i); |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 2865 | |
| 2866 | //Still working! |
| 2867 | set_current_state(TASK_INTERRUPTIBLE); |
| 2868 | schedule_timeout(1); |
| 2869 | } |
| 2870 | |
| 2871 | if (i > timeout) { |
| 2872 | PERROR_CRITICAL("FSM IS BUSY!\n"); |
| 2873 | return ME_ERRNO_INTERNAL; |
| 2874 | } |
| 2875 | return ME_ERRNO_SUCCESS; |
| 2876 | } |
| 2877 | |
| 2878 | /** @brief Copy data from circular buffer to fifo (fast) in wraparound. |
| 2879 | * @note This is time critical function. Checking is done at begining and end only. |
| 2880 | * @note The is not reasonable way to check how many walues was in FIFO at begining. The count must be managed externaly. |
| 2881 | * |
| 2882 | * @param instance The subdevice instance (pointer). |
| 2883 | * @param count Maximum number of copied data. |
| 2884 | * @param start_pos Position of the firs value in buffer. |
| 2885 | * |
| 2886 | * @return On success: Number of copied data. |
| 2887 | * @return On error/success: 0. No datas were copied => no data in buffer. |
| 2888 | * @return On error: -ME_ERRNO_FIFO_BUFFER_OVERFLOW. |
| 2889 | */ |
| 2890 | int inline ao_write_data_wraparound(me6000_ao_subdevice_t * instance, int count, |
| 2891 | int start_pos) |
| 2892 | { /// @note This is time critical function! |
| 2893 | uint32_t status; |
| 2894 | uint32_t value; |
| 2895 | int pos = |
| 2896 | (instance->circ_buf.tail + start_pos) & instance->circ_buf.mask; |
| 2897 | int local_count = count; |
| 2898 | int i = 1; |
| 2899 | |
| 2900 | if (count <= 0) { //Wrong count! |
| 2901 | return 0; |
| 2902 | } |
| 2903 | |
| 2904 | while (i < local_count) { |
| 2905 | //Get value from buffer |
| 2906 | value = *(instance->circ_buf.buf + pos); |
| 2907 | //Prepare it |
| 2908 | if (instance->ao_idx & 0x1) { |
| 2909 | value <<= 16; |
| 2910 | } |
| 2911 | //Put value to FIFO |
| 2912 | outl(value, instance->fifo_reg); |
| 2913 | //PDEBUG_REG("idx=%d fifo_reg outl(0x%lX+0x%lX)=0x%x\n", instance->ao_idx, instance->reg_base, instance->fifo_reg - instance->reg_base, value); |
| 2914 | |
| 2915 | pos++; |
| 2916 | pos &= instance->circ_buf.mask; |
| 2917 | if (pos == instance->circ_buf.head) { |
| 2918 | pos = instance->circ_buf.tail; |
| 2919 | } |
| 2920 | i++; |
| 2921 | } |
| 2922 | |
| 2923 | status = inl(instance->status_reg); |
| 2924 | if (!(status & ME6000_AO_STATUS_BIT_FF)) { //FIFO is full before all datas were copied! |
| 2925 | PERROR("idx=%d FIFO is full before all datas were copied!\n", |
| 2926 | instance->ao_idx); |
| 2927 | return -ME_ERRNO_FIFO_BUFFER_OVERFLOW; |
| 2928 | } else { //Add last value |
| 2929 | value = *(instance->circ_buf.buf + pos); |
| 2930 | if (instance->ao_idx & 0x1) { |
| 2931 | value <<= 16; |
| 2932 | } |
| 2933 | //Put value to FIFO |
| 2934 | outl(value, instance->fifo_reg); |
| 2935 | //PDEBUG_REG("idx=%d fifo_reg outl(0x%lX+0x%lX)=0x%x\n", instance->ao_idx, instance->reg_base, instance->fifo_reg - instance->reg_base, value); |
| 2936 | } |
| 2937 | |
| 2938 | PINFO("idx=%d WRAPAROUND LOADED %d values\n", instance->ao_idx, |
| 2939 | local_count); |
| 2940 | return local_count; |
| 2941 | } |
| 2942 | |
| 2943 | /** @brief Copy data from software buffer to fifo (fast). |
| 2944 | * @note This is time critical function. Checking is done at begining and end only. |
| 2945 | * @note The is not reasonable way to check how many walues was in FIFO at begining. The count must be managed externaly. |
| 2946 | * |
| 2947 | * @param instance The subdevice instance (pointer). |
| 2948 | * @param count Maximum number of copied data. |
| 2949 | * @param start_pos Position of the firs value in buffer. |
| 2950 | * |
| 2951 | * @return On success: Number of copied data. |
| 2952 | * @return On error/success: 0. No datas were copied => no data in buffer. |
| 2953 | * @return On error: -ME_ERRNO_FIFO_BUFFER_OVERFLOW. |
| 2954 | */ |
| 2955 | int inline ao_write_data(me6000_ao_subdevice_t * instance, int count, |
| 2956 | int start_pos) |
| 2957 | { /// @note This is time critical function! |
| 2958 | uint32_t status; |
| 2959 | uint32_t value; |
| 2960 | int pos = |
| 2961 | (instance->circ_buf.tail + start_pos) & instance->circ_buf.mask; |
| 2962 | int local_count = count; |
| 2963 | int max_count; |
| 2964 | int i = 1; |
| 2965 | |
| 2966 | if (count <= 0) { //Wrong count! |
| 2967 | return 0; |
| 2968 | } |
| 2969 | |
| 2970 | max_count = me_circ_buf_values(&instance->circ_buf) - start_pos; |
| 2971 | if (max_count <= 0) { //No data to copy! |
| 2972 | return 0; |
| 2973 | } |
| 2974 | |
| 2975 | if (max_count < count) { |
| 2976 | local_count = max_count; |
| 2977 | } |
| 2978 | |
| 2979 | while (i < local_count) { |
| 2980 | //Get value from buffer |
| 2981 | value = *(instance->circ_buf.buf + pos); |
| 2982 | //Prepare it |
| 2983 | if (instance->ao_idx & 0x1) { |
| 2984 | value <<= 16; |
| 2985 | } |
| 2986 | //Put value to FIFO |
| 2987 | outl(value, instance->fifo_reg); |
| 2988 | //PDEBUG_REG("idx=%d fifo_reg outl(0x%lX+0x%lX)=0x%x\n", instance->ao_idx, instance->reg_base, instance->fifo_reg - instance->reg_base, value); |
| 2989 | |
| 2990 | pos++; |
| 2991 | pos &= instance->circ_buf.mask; |
| 2992 | i++; |
| 2993 | } |
| 2994 | |
| 2995 | status = inl(instance->status_reg); |
| 2996 | if (!(status & ME6000_AO_STATUS_BIT_FF)) { //FIFO is full before all datas were copied! |
| 2997 | PERROR("idx=%d FIFO is full before all datas were copied!\n", |
| 2998 | instance->ao_idx); |
| 2999 | return -ME_ERRNO_FIFO_BUFFER_OVERFLOW; |
| 3000 | } else { //Add last value |
| 3001 | value = *(instance->circ_buf.buf + pos); |
| 3002 | if (instance->ao_idx & 0x1) { |
| 3003 | value <<= 16; |
| 3004 | } |
| 3005 | //Put value to FIFO |
| 3006 | outl(value, instance->fifo_reg); |
| 3007 | //PDEBUG_REG("idx=%d fifo_reg outl(0x%lX+0x%lX)=0x%x\n", instance->ao_idx, instance->reg_base, instance->fifo_reg - instance->reg_base, value); |
| 3008 | } |
| 3009 | |
| 3010 | PINFO("idx=%d FAST LOADED %d values\n", instance->ao_idx, local_count); |
| 3011 | return local_count; |
| 3012 | } |
| 3013 | |
| 3014 | /** @brief Copy data from software buffer to fifo (slow). |
| 3015 | * @note This is slow function that copy all data from buffer to FIFO with full control. |
| 3016 | * |
| 3017 | * @param instance The subdevice instance (pointer). |
| 3018 | * @param count Maximum number of copied data. |
| 3019 | * @param start_pos Position of the firs value in buffer. |
| 3020 | * |
| 3021 | * @return On success: Number of copied values. |
| 3022 | * @return On error/success: 0. FIFO was full at begining. |
| 3023 | * @return On error: -ME_ERRNO_RING_BUFFER_UNDEFFLOW. |
| 3024 | */ |
| 3025 | int inline ao_write_data_pooling(me6000_ao_subdevice_t * instance, int count, |
| 3026 | int start_pos) |
| 3027 | { /// @note This is slow function! |
| 3028 | uint32_t status; |
| 3029 | uint32_t value; |
| 3030 | int pos = |
| 3031 | (instance->circ_buf.tail + start_pos) & instance->circ_buf.mask; |
| 3032 | int local_count = count; |
| 3033 | int i; |
| 3034 | int max_count; |
| 3035 | |
| 3036 | if (count <= 0) { //Wrong count! |
| 3037 | PERROR("idx=%d SLOW LOADED: Wrong count!\n", instance->ao_idx); |
| 3038 | return 0; |
| 3039 | } |
| 3040 | |
| 3041 | max_count = me_circ_buf_values(&instance->circ_buf) - start_pos; |
| 3042 | if (max_count <= 0) { //No data to copy! |
| 3043 | PERROR("idx=%d SLOW LOADED: No data to copy!\n", |
| 3044 | instance->ao_idx); |
| 3045 | return 0; |
| 3046 | } |
| 3047 | |
| 3048 | if (max_count < count) { |
| 3049 | local_count = max_count; |
| 3050 | } |
| 3051 | |
| 3052 | for (i = 0; i < local_count; i++) { |
| 3053 | status = inl(instance->status_reg); |
| 3054 | if (!(status & ME6000_AO_STATUS_BIT_FF)) { //FIFO is full! |
| 3055 | return i; |
| 3056 | } |
| 3057 | //Get value from buffer |
| 3058 | value = *(instance->circ_buf.buf + pos); |
| 3059 | //Prepare it |
| 3060 | if (instance->ao_idx & 0x1) { |
| 3061 | value <<= 16; |
| 3062 | } |
| 3063 | //Put value to FIFO |
| 3064 | outl(value, instance->fifo_reg); |
| 3065 | //PDEBUG_REG("idx=%d fifo_reg outl(0x%lX+0x%lX)=0x%x\n", instance->ao_idx, instance->reg_base, instance->fifo_reg - instance->reg_base, value); |
| 3066 | |
| 3067 | pos++; |
| 3068 | pos &= instance->circ_buf.mask; |
| 3069 | } |
| 3070 | |
| 3071 | PINFO("idx=%d SLOW LOADED %d values\n", instance->ao_idx, local_count); |
| 3072 | return local_count; |
| 3073 | } |
| 3074 | |
| 3075 | /** @brief Copy data from user space to circular buffer. |
| 3076 | * @param instance The subdevice instance (pointer). |
| 3077 | * @param count Number of datas in user space. |
| 3078 | * @param user_values Buffer's pointer. |
| 3079 | * |
| 3080 | * @return On success: Number of copied values. |
| 3081 | * @return On error: -ME_ERRNO_INTERNAL. |
| 3082 | */ |
| 3083 | int inline ao_get_data_from_user(me6000_ao_subdevice_t * instance, int count, |
| 3084 | int *user_values) |
| 3085 | { |
| 3086 | int i, err; |
| 3087 | int empty_space; |
| 3088 | int copied; |
| 3089 | int value; |
| 3090 | |
| 3091 | empty_space = me_circ_buf_space(&instance->circ_buf); |
| 3092 | //We have only this space free. |
| 3093 | copied = (count < empty_space) ? count : empty_space; |
| 3094 | for (i = 0; i < copied; i++) { //Copy from user to buffer |
| 3095 | if ((err = get_user(value, (int *)(user_values + i)))) { |
| 3096 | PERROR |
| 3097 | ("idx=%d BUFFER LOADED: get_user(0x%p) return an error: %d\n", |
| 3098 | instance->ao_idx, user_values + i, err); |
| 3099 | return -ME_ERRNO_INTERNAL; |
| 3100 | } |
| 3101 | /// @note The analog output in me6000 series has size of 16 bits. |
| 3102 | *(instance->circ_buf.buf + instance->circ_buf.head) = |
| 3103 | (uint16_t) value; |
| 3104 | instance->circ_buf.head++; |
| 3105 | instance->circ_buf.head &= instance->circ_buf.mask; |
| 3106 | } |
| 3107 | |
| 3108 | PINFO("idx=%d BUFFER LOADED %d values\n", instance->ao_idx, copied); |
| 3109 | return copied; |
| 3110 | } |
| 3111 | |
| 3112 | static void me6000_ao_work_control_task( |
| 3113 | #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) |
| 3114 | void *subdevice |
| 3115 | #else |
| 3116 | struct work_struct *work |
| 3117 | #endif |
| 3118 | ) |
| 3119 | { |
| 3120 | me6000_ao_subdevice_t *instance; |
| 3121 | unsigned long cpu_flags = 0; |
| 3122 | uint32_t status; |
| 3123 | uint32_t ctrl; |
| 3124 | uint32_t synch; |
| 3125 | int reschedule = 0; |
| 3126 | int signaling = 0; |
| 3127 | uint32_t single_mask; |
| 3128 | |
| 3129 | #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20) |
| 3130 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 3131 | #else |
| 3132 | instance = |
| 3133 | container_of((void *)work, me6000_ao_subdevice_t, ao_control_task); |
| 3134 | #endif |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 3135 | PINFO("<%s: %ld> executed. idx=%d\n", __func__, jiffies, |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 3136 | instance->ao_idx); |
| 3137 | |
| 3138 | status = inl(instance->status_reg); |
| 3139 | PDEBUG_REG("status_reg inl(0x%lX+0x%lX)=0x%x\n", instance->reg_base, |
| 3140 | instance->status_reg - instance->reg_base, status); |
| 3141 | |
| 3142 | /// @note AO_STATUS_BIT_FSM doesn't work as should be for pure single channels (idx>=4) |
| 3143 | // single_mask = (instance->ao_idx-ME6000_AO_SINGLE_STATUS_OFFSET < 0) ? 0x0000 : (0x0001 << (instance->ao_idx-ME6000_AO_SINGLE_STATUS_OFFSET)); |
| 3144 | single_mask = *instance->triggering_flags & (0x1 << instance->ao_idx); |
| 3145 | |
| 3146 | switch (instance->status) { // Checking actual mode. |
| 3147 | |
| 3148 | // Not configured for work. |
| 3149 | case ao_status_none: |
| 3150 | break; |
| 3151 | |
| 3152 | //This are stable modes. No need to do anything. (?) |
| 3153 | case ao_status_single_configured: |
| 3154 | case ao_status_stream_configured: |
| 3155 | case ao_status_stream_fifo_error: |
| 3156 | case ao_status_stream_buffer_error: |
| 3157 | case ao_status_stream_error: |
| 3158 | PERROR("Shouldn't be running!.\n"); |
| 3159 | break; |
| 3160 | |
| 3161 | // Single modes |
| 3162 | case ao_status_single_run_wait: |
| 3163 | case ao_status_single_run: |
| 3164 | case ao_status_single_end_wait: |
| 3165 | if (instance->fifo) { // Extra registers. |
| 3166 | if (!(status & ME6000_AO_STATUS_BIT_FSM)) { // State machine is not working. |
| 3167 | if (((instance->fifo & ME6000_AO_HAS_FIFO) |
| 3168 | && (!(status & ME6000_AO_STATUS_BIT_EF))) |
| 3169 | || (!(instance->fifo & ME6000_AO_HAS_FIFO))) { // Single is in end state. |
| 3170 | PDEBUG |
| 3171 | ("Single call has been complited.\n"); |
| 3172 | |
| 3173 | // Set correct value for single_read(); |
| 3174 | instance->single_value = |
| 3175 | instance->single_value_in_fifo; |
| 3176 | |
| 3177 | // Set status as 'ao_status_single_end' |
| 3178 | instance->status = ao_status_single_end; |
| 3179 | |
| 3180 | spin_lock(instance->preload_reg_lock); |
| 3181 | if ((single_mask) && (*instance->preload_flags & (ME6000_AO_SYNC_HOLD << instance->ao_idx))) { // This is one of synchronous start channels. Set all as triggered. |
| 3182 | *instance->triggering_flags = |
| 3183 | 0x00000000; |
| 3184 | } else { |
| 3185 | //Set this channel as triggered (none active). |
| 3186 | *instance->triggering_flags &= |
| 3187 | ~(0x1 << instance->ao_idx); |
| 3188 | } |
| 3189 | spin_unlock(instance->preload_reg_lock); |
| 3190 | |
| 3191 | // Signal the end. |
| 3192 | signaling = 1; |
| 3193 | // Wait for stop ISM. |
| 3194 | reschedule = 1; |
| 3195 | |
| 3196 | break; |
| 3197 | } |
| 3198 | } |
| 3199 | // Check timeout. |
| 3200 | if ((instance->timeout.delay) && ((jiffies - instance->timeout.start_time) >= instance->timeout.delay)) { // Timeout |
| 3201 | PDEBUG("Timeout reached.\n"); |
| 3202 | // Stop all actions. No conditions! Block interrupts and trigger. Leave FIFO untouched! |
| 3203 | spin_lock_irqsave(&instance->subdevice_lock, |
| 3204 | cpu_flags); |
| 3205 | ctrl = inl(instance->ctrl_reg); |
| 3206 | ctrl |= |
| 3207 | ME6000_AO_CTRL_BIT_STOP | |
| 3208 | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP; |
| 3209 | ctrl &= |
| 3210 | ~(ME6000_AO_CTRL_BIT_ENABLE_IRQ | |
| 3211 | ME6000_AO_CTRL_BIT_ENABLE_EX_TRIG); |
| 3212 | ctrl &= |
| 3213 | ~(ME6000_AO_CTRL_BIT_EX_TRIG_EDGE | |
| 3214 | ME6000_AO_CTRL_BIT_EX_TRIG_EDGE_BOTH); |
| 3215 | //Disabling FIFO |
| 3216 | ctrl &= ~ME6000_AO_CTRL_BIT_ENABLE_FIFO; |
| 3217 | |
| 3218 | outl(ctrl, instance->ctrl_reg); |
| 3219 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 3220 | instance->reg_base, |
| 3221 | instance->ctrl_reg - |
| 3222 | instance->reg_base, ctrl); |
| 3223 | spin_unlock_irqrestore(&instance-> |
| 3224 | subdevice_lock, |
| 3225 | cpu_flags); |
| 3226 | |
| 3227 | //Reset interrupt latch |
| 3228 | inl(instance->irq_reset_reg); |
| 3229 | |
| 3230 | spin_lock(instance->preload_reg_lock); |
| 3231 | //Remove from synchronous start. Block triggering from this output. |
| 3232 | synch = inl(instance->preload_reg); |
| 3233 | synch &= |
| 3234 | ~((ME6000_AO_SYNC_HOLD | |
| 3235 | ME6000_AO_SYNC_EXT_TRIG) << instance-> |
| 3236 | ao_idx); |
| 3237 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { // No FIFO - set to single safe mode |
| 3238 | synch |= |
| 3239 | ME6000_AO_SYNC_HOLD << instance-> |
| 3240 | ao_idx; |
| 3241 | } |
| 3242 | outl(synch, instance->preload_reg); |
| 3243 | PDEBUG_REG |
| 3244 | ("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 3245 | instance->reg_base, |
| 3246 | instance->preload_reg - instance->reg_base, |
| 3247 | synch); |
| 3248 | //Set this channel as triggered (none active). |
| 3249 | *instance->triggering_flags &= |
| 3250 | ~(0x1 << instance->ao_idx); |
| 3251 | spin_unlock(instance->preload_reg_lock); |
| 3252 | |
| 3253 | // Set correct value for single_read(); |
| 3254 | instance->single_value_in_fifo = |
| 3255 | instance->single_value; |
| 3256 | |
| 3257 | instance->status = ao_status_single_end; |
| 3258 | |
| 3259 | // Signal the end. |
| 3260 | signaling = 1; |
| 3261 | } |
| 3262 | } else { // No extra registers. |
| 3263 | /* |
| 3264 | if (!(status & single_mask)) |
| 3265 | {// State machine is not working. |
| 3266 | PDEBUG("Single call has been complited.\n"); |
| 3267 | |
| 3268 | // Set correct value for single_read(); |
| 3269 | instance->single_value = instance->single_value_in_fifo; |
| 3270 | |
| 3271 | // Set status as 'ao_status_single_end' |
| 3272 | instance->status = ao_status_single_end; |
| 3273 | |
| 3274 | // Signal the end. |
| 3275 | signaling = 1; |
| 3276 | // Wait for stop ISM. |
| 3277 | reschedule = 1; |
| 3278 | |
| 3279 | break; |
| 3280 | } |
| 3281 | */ |
| 3282 | if (!single_mask) { // Was triggered. |
| 3283 | PDEBUG("Single call has been complited.\n"); |
| 3284 | |
| 3285 | // Set correct value for single_read(); |
| 3286 | instance->single_value = |
| 3287 | instance->single_value_in_fifo; |
| 3288 | |
| 3289 | // Set status as 'ao_status_single_end' |
| 3290 | instance->status = ao_status_single_end; |
| 3291 | |
| 3292 | // Signal the end. |
| 3293 | signaling = 1; |
| 3294 | |
| 3295 | break; |
| 3296 | } |
| 3297 | // Check timeout. |
| 3298 | if ((instance->timeout.delay) && ((jiffies - instance->timeout.start_time) >= instance->timeout.delay)) { // Timeout |
| 3299 | PDEBUG("Timeout reached.\n"); |
| 3300 | |
| 3301 | spin_lock(instance->preload_reg_lock); |
| 3302 | //Remove from synchronous start. Block triggering from this output. |
| 3303 | synch = inl(instance->preload_reg); |
| 3304 | synch &= |
| 3305 | ~(ME6000_AO_SYNC_EXT_TRIG << instance-> |
| 3306 | ao_idx); |
| 3307 | synch |= |
| 3308 | ME6000_AO_SYNC_HOLD << instance->ao_idx; |
| 3309 | |
| 3310 | outl(synch, instance->preload_reg); |
| 3311 | PDEBUG_REG |
| 3312 | ("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 3313 | instance->reg_base, |
| 3314 | instance->preload_reg - instance->reg_base, |
| 3315 | synch); |
| 3316 | //Set this channel as triggered (none active). |
| 3317 | *instance->triggering_flags &= |
| 3318 | ~(0x1 << instance->ao_idx); |
| 3319 | spin_unlock(instance->preload_reg_lock); |
| 3320 | |
| 3321 | // Restore old settings. |
| 3322 | PDEBUG("Write old value back to register.\n"); |
| 3323 | outl(instance->single_value, |
| 3324 | instance->single_reg); |
| 3325 | PDEBUG_REG |
| 3326 | ("single_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 3327 | instance->reg_base, |
| 3328 | instance->single_reg - instance->reg_base, |
| 3329 | instance->single_value); |
| 3330 | |
| 3331 | // Set correct value for single_read(); |
| 3332 | instance->single_value_in_fifo = |
| 3333 | instance->single_value; |
| 3334 | |
| 3335 | instance->status = ao_status_single_end; |
| 3336 | |
| 3337 | // Signal the end. |
| 3338 | signaling = 1; |
| 3339 | } |
| 3340 | } |
| 3341 | |
| 3342 | // Wait for stop. |
| 3343 | reschedule = 1; |
| 3344 | break; |
| 3345 | |
| 3346 | case ao_status_stream_end: |
| 3347 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { // No FIFO |
| 3348 | PERROR_CRITICAL |
| 3349 | ("Streaming on single device! This feature is not implemented in this version!\n"); |
| 3350 | instance->status = ao_status_stream_error; |
| 3351 | // Signal the end. |
| 3352 | signaling = 1; |
| 3353 | break; |
| 3354 | } |
| 3355 | case ao_status_single_end: |
| 3356 | if (instance->fifo) { // Extra registers. |
| 3357 | if (status & ME6000_AO_STATUS_BIT_FSM) { // State machine is working but the status is set to end. Force stop. |
| 3358 | |
| 3359 | // Wait for stop. |
| 3360 | reschedule = 1; |
| 3361 | } |
| 3362 | |
| 3363 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 3364 | // Stop all actions. No conditions! Block interrupts and trigger. Leave FIFO untouched! |
| 3365 | ctrl = inl(instance->ctrl_reg); |
| 3366 | ctrl |= |
| 3367 | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP | |
| 3368 | ME6000_AO_CTRL_BIT_STOP; |
| 3369 | ctrl &= |
| 3370 | ~(ME6000_AO_CTRL_BIT_ENABLE_IRQ | |
| 3371 | ME6000_AO_CTRL_BIT_ENABLE_EX_TRIG); |
| 3372 | outl(ctrl, instance->ctrl_reg); |
| 3373 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 3374 | instance->reg_base, |
| 3375 | instance->ctrl_reg - instance->reg_base, |
| 3376 | ctrl); |
| 3377 | spin_unlock_irqrestore(&instance->subdevice_lock, |
| 3378 | cpu_flags); |
| 3379 | |
| 3380 | //Reset interrupt latch |
| 3381 | inl(instance->irq_reset_reg); |
| 3382 | } else { // No extra registers. |
| 3383 | /* |
| 3384 | if (status & single_mask) |
| 3385 | {// State machine is working but the status is set to end. Force stop. |
| 3386 | |
| 3387 | // Wait for stop. |
| 3388 | reschedule = 1; |
| 3389 | } |
| 3390 | */ |
| 3391 | } |
| 3392 | break; |
| 3393 | |
| 3394 | // Stream modes |
| 3395 | case ao_status_stream_run_wait: |
| 3396 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { // No FIFO |
| 3397 | PERROR_CRITICAL |
| 3398 | ("Streaming on single device! This feature is not implemented in this version!\n"); |
| 3399 | instance->status = ao_status_stream_error; |
| 3400 | // Signal the end. |
| 3401 | signaling = 1; |
| 3402 | break; |
| 3403 | } |
| 3404 | |
| 3405 | if (status & ME6000_AO_STATUS_BIT_FSM) { // State machine is working. Waiting for start finish. |
| 3406 | instance->status = ao_status_stream_run; |
| 3407 | |
| 3408 | // Signal end of this step |
| 3409 | signaling = 1; |
| 3410 | } else { // State machine is not working. |
| 3411 | if (!(status & ME6000_AO_STATUS_BIT_EF)) { // FIFO is empty. Procedure has started and finish already! |
| 3412 | instance->status = ao_status_stream_end; |
| 3413 | |
| 3414 | // Signal the end. |
| 3415 | signaling = 1; |
| 3416 | // Wait for stop. |
| 3417 | reschedule = 1; |
| 3418 | break; |
| 3419 | } |
| 3420 | } |
| 3421 | |
| 3422 | // Check timeout. |
| 3423 | if ((instance->timeout.delay) && ((jiffies - instance->timeout.start_time) >= instance->timeout.delay)) { // Timeout |
| 3424 | PDEBUG("Timeout reached.\n"); |
| 3425 | // Stop all actions. No conditions! Block interrupts. Leave FIFO untouched! |
| 3426 | spin_lock_irqsave(&instance->subdevice_lock, cpu_flags); |
| 3427 | ctrl = inl(instance->ctrl_reg); |
| 3428 | ctrl |= |
| 3429 | ME6000_AO_CTRL_BIT_STOP | |
| 3430 | ME6000_AO_CTRL_BIT_IMMEDIATE_STOP; |
| 3431 | ctrl &= |
| 3432 | ~(ME6000_AO_CTRL_BIT_ENABLE_IRQ | |
| 3433 | ME6000_AO_CTRL_BIT_ENABLE_EX_TRIG); |
| 3434 | outl(ctrl, instance->ctrl_reg); |
| 3435 | PDEBUG_REG("ctrl_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 3436 | instance->reg_base, |
| 3437 | instance->ctrl_reg - instance->reg_base, |
| 3438 | ctrl); |
| 3439 | spin_unlock_irqrestore(&instance->subdevice_lock, |
| 3440 | cpu_flags); |
| 3441 | |
| 3442 | //Reset interrupt latch |
| 3443 | inl(instance->irq_reset_reg); |
| 3444 | |
| 3445 | spin_lock(instance->preload_reg_lock); |
| 3446 | //Remove from synchronous start. Block triggering from this output. |
| 3447 | synch = inl(instance->preload_reg); |
| 3448 | synch &= |
| 3449 | ~((ME6000_AO_SYNC_HOLD | ME6000_AO_SYNC_EXT_TRIG) << |
| 3450 | instance->ao_idx); |
| 3451 | outl(synch, instance->preload_reg); |
| 3452 | PDEBUG_REG("preload_reg outl(0x%lX+0x%lX)=0x%x\n", |
| 3453 | instance->reg_base, |
| 3454 | instance->preload_reg - instance->reg_base, |
| 3455 | synch); |
| 3456 | spin_unlock(instance->preload_reg_lock); |
| 3457 | |
| 3458 | instance->status = ao_status_stream_end; |
| 3459 | |
| 3460 | // Signal the end. |
| 3461 | signaling = 1; |
| 3462 | } |
| 3463 | // Wait for stop. |
| 3464 | reschedule = 1; |
| 3465 | break; |
| 3466 | |
| 3467 | case ao_status_stream_run: |
| 3468 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { // No FIFO |
| 3469 | PERROR_CRITICAL |
| 3470 | ("Streaming on single device! This feature is not implemented in this version!\n"); |
| 3471 | instance->status = ao_status_stream_error; |
| 3472 | // Signal the end. |
| 3473 | signaling = 1; |
| 3474 | break; |
| 3475 | } |
| 3476 | |
| 3477 | if (!(status & ME6000_AO_STATUS_BIT_FSM)) { // State machine is not working. This is an error. |
| 3478 | // BROKEN PIPE! |
| 3479 | if (!(status & ME6000_AO_STATUS_BIT_EF)) { // FIFO is empty. |
| 3480 | if (me_circ_buf_values(&instance->circ_buf)) { // Software buffer is not empty. |
| 3481 | if (instance->stop_data_count && (instance->stop_data_count <= instance->data_count)) { //Finishing work. Requed data shown. |
| 3482 | PDEBUG |
| 3483 | ("ISM stoped. No data in FIFO. Buffer is not empty.\n"); |
| 3484 | instance->status = |
| 3485 | ao_status_stream_end; |
| 3486 | } else { |
| 3487 | PERROR |
| 3488 | ("Output stream has been broken. ISM stoped. No data in FIFO. Buffer is not empty.\n"); |
| 3489 | instance->status = |
| 3490 | ao_status_stream_buffer_error; |
| 3491 | } |
| 3492 | } else { // Software buffer is empty. |
| 3493 | PDEBUG |
| 3494 | ("ISM stoped. No data in FIFO. Buffer is empty.\n"); |
| 3495 | instance->status = ao_status_stream_end; |
| 3496 | } |
| 3497 | } else { // There are still datas in FIFO. |
| 3498 | if (me_circ_buf_values(&instance->circ_buf)) { // Software buffer is not empty. |
| 3499 | PERROR |
| 3500 | ("Output stream has been broken. ISM stoped but some data in FIFO and buffer.\n"); |
| 3501 | } else { // Software buffer is empty. |
| 3502 | PERROR |
| 3503 | ("Output stream has been broken. ISM stoped but some data in FIFO. Buffer is empty.\n"); |
| 3504 | } |
| 3505 | instance->status = ao_status_stream_fifo_error; |
| 3506 | |
| 3507 | } |
| 3508 | |
| 3509 | // Signal the failure. |
| 3510 | signaling = 1; |
| 3511 | break; |
| 3512 | } |
| 3513 | // Wait for stop. |
| 3514 | reschedule = 1; |
| 3515 | break; |
| 3516 | |
| 3517 | case ao_status_stream_end_wait: |
| 3518 | if (!(instance->fifo & ME6000_AO_HAS_FIFO)) { // No FIFO |
| 3519 | PERROR_CRITICAL |
| 3520 | ("Streaming on single device! This feature is not implemented in this version!\n"); |
| 3521 | instance->status = ao_status_stream_error; |
| 3522 | // Signal the end. |
| 3523 | signaling = 1; |
| 3524 | break; |
| 3525 | } |
| 3526 | |
| 3527 | if (!(status & ME6000_AO_STATUS_BIT_FSM)) { // State machine is not working. Waiting for stop finish. |
| 3528 | instance->status = ao_status_stream_end; |
| 3529 | signaling = 1; |
| 3530 | } |
| 3531 | // State machine is working. |
| 3532 | reschedule = 1; |
| 3533 | break; |
| 3534 | |
| 3535 | default: |
| 3536 | PERROR_CRITICAL("Status is in wrong state (%d)!\n", |
| 3537 | instance->status); |
| 3538 | instance->status = ao_status_stream_error; |
| 3539 | // Signal the end. |
| 3540 | signaling = 1; |
| 3541 | break; |
| 3542 | |
| 3543 | } |
| 3544 | |
| 3545 | if (signaling) { //Signal it. |
| 3546 | wake_up_interruptible_all(&instance->wait_queue); |
| 3547 | } |
| 3548 | |
| 3549 | if (instance->ao_control_task_flag && reschedule) { // Reschedule task |
| 3550 | queue_delayed_work(instance->me6000_workqueue, |
| 3551 | &instance->ao_control_task, 1); |
| 3552 | } else { |
Harvey Harrison | d599edc | 2009-01-07 14:31:57 -0800 | [diff] [blame] | 3553 | PINFO("<%s> Ending control task.\n", __func__); |
David Kiliani | 3fedd14 | 2008-11-01 00:39:12 +0100 | [diff] [blame] | 3554 | } |
| 3555 | |
| 3556 | } |
| 3557 | |
| 3558 | static int me6000_ao_query_range_by_min_max(me_subdevice_t * subdevice, |
| 3559 | int unit, |
| 3560 | int *min, |
| 3561 | int *max, int *maxdata, int *range) |
| 3562 | { |
| 3563 | me6000_ao_subdevice_t *instance; |
| 3564 | |
| 3565 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 3566 | |
| 3567 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 3568 | |
| 3569 | if ((*max - *min) < 0) { |
| 3570 | PERROR("Invalid minimum and maximum values specified.\n"); |
| 3571 | return ME_ERRNO_INVALID_MIN_MAX; |
| 3572 | } |
| 3573 | |
| 3574 | if ((unit == ME_UNIT_VOLT) || (unit == ME_UNIT_ANY)) { |
| 3575 | if ((*max <= (instance->max + 1000)) && (*min >= instance->min)) { |
| 3576 | *min = instance->min; |
| 3577 | *max = instance->max; |
| 3578 | *maxdata = ME6000_AO_MAX_DATA; |
| 3579 | *range = 0; |
| 3580 | } else { |
| 3581 | PERROR("No matching range available.\n"); |
| 3582 | return ME_ERRNO_NO_RANGE; |
| 3583 | } |
| 3584 | } else { |
| 3585 | PERROR("Invalid physical unit specified.\n"); |
| 3586 | return ME_ERRNO_INVALID_UNIT; |
| 3587 | } |
| 3588 | |
| 3589 | return ME_ERRNO_SUCCESS; |
| 3590 | } |
| 3591 | |
| 3592 | static int me6000_ao_query_number_ranges(me_subdevice_t * subdevice, |
| 3593 | int unit, int *count) |
| 3594 | { |
| 3595 | me6000_ao_subdevice_t *instance; |
| 3596 | |
| 3597 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 3598 | |
| 3599 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 3600 | |
| 3601 | if ((unit == ME_UNIT_VOLT) || (unit == ME_UNIT_ANY)) { |
| 3602 | *count = 1; |
| 3603 | } else { |
| 3604 | *count = 0; |
| 3605 | } |
| 3606 | |
| 3607 | return ME_ERRNO_SUCCESS; |
| 3608 | } |
| 3609 | |
| 3610 | static int me6000_ao_query_range_info(me_subdevice_t * subdevice, |
| 3611 | int range, |
| 3612 | int *unit, |
| 3613 | int *min, int *max, int *maxdata) |
| 3614 | { |
| 3615 | me6000_ao_subdevice_t *instance; |
| 3616 | |
| 3617 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 3618 | |
| 3619 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 3620 | |
| 3621 | if (range == 0) { |
| 3622 | *unit = ME_UNIT_VOLT; |
| 3623 | *min = instance->min; |
| 3624 | *max = instance->max; |
| 3625 | *maxdata = ME6000_AO_MAX_DATA; |
| 3626 | } else { |
| 3627 | PERROR("Invalid range number specified.\n"); |
| 3628 | return ME_ERRNO_INVALID_RANGE; |
| 3629 | } |
| 3630 | |
| 3631 | return ME_ERRNO_SUCCESS; |
| 3632 | } |
| 3633 | |
| 3634 | static int me6000_ao_query_timer(me_subdevice_t * subdevice, |
| 3635 | int timer, |
| 3636 | int *base_frequency, |
| 3637 | long long *min_ticks, long long *max_ticks) |
| 3638 | { |
| 3639 | me6000_ao_subdevice_t *instance; |
| 3640 | |
| 3641 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 3642 | |
| 3643 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 3644 | |
| 3645 | if (instance->fifo) { //Streaming device. |
| 3646 | *base_frequency = ME6000_AO_BASE_FREQUENCY; |
| 3647 | if (timer == ME_TIMER_ACQ_START) { |
| 3648 | *min_ticks = ME6000_AO_MIN_ACQ_TICKS; |
| 3649 | *max_ticks = ME6000_AO_MAX_ACQ_TICKS; |
| 3650 | } else if (timer == ME_TIMER_CONV_START) { |
| 3651 | *min_ticks = ME6000_AO_MIN_CHAN_TICKS; |
| 3652 | *max_ticks = ME6000_AO_MAX_CHAN_TICKS; |
| 3653 | } |
| 3654 | } else { //Not streaming device! |
| 3655 | *base_frequency = 0; |
| 3656 | *min_ticks = 0; |
| 3657 | *max_ticks = 0; |
| 3658 | } |
| 3659 | |
| 3660 | return ME_ERRNO_SUCCESS; |
| 3661 | } |
| 3662 | |
| 3663 | static int me6000_ao_query_number_channels(me_subdevice_t * subdevice, |
| 3664 | int *number) |
| 3665 | { |
| 3666 | me6000_ao_subdevice_t *instance; |
| 3667 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 3668 | |
| 3669 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 3670 | |
| 3671 | *number = 1; |
| 3672 | return ME_ERRNO_SUCCESS; |
| 3673 | } |
| 3674 | |
| 3675 | static int me6000_ao_query_subdevice_type(me_subdevice_t * subdevice, |
| 3676 | int *type, int *subtype) |
| 3677 | { |
| 3678 | me6000_ao_subdevice_t *instance; |
| 3679 | |
| 3680 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 3681 | |
| 3682 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 3683 | |
| 3684 | *type = ME_TYPE_AO; |
| 3685 | *subtype = |
| 3686 | (instance-> |
| 3687 | fifo & ME6000_AO_HAS_FIFO) ? ME_SUBTYPE_STREAMING : |
| 3688 | ME_SUBTYPE_SINGLE; |
| 3689 | |
| 3690 | return ME_ERRNO_SUCCESS; |
| 3691 | } |
| 3692 | |
| 3693 | static int me6000_ao_query_subdevice_caps(me_subdevice_t * subdevice, int *caps) |
| 3694 | { |
| 3695 | me6000_ao_subdevice_t *instance; |
| 3696 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 3697 | |
| 3698 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 3699 | |
| 3700 | *caps = |
| 3701 | ME_CAPS_AO_TRIG_SYNCHRONOUS | ((instance->fifo) ? ME_CAPS_AO_FIFO : |
| 3702 | ME_CAPS_NONE); |
| 3703 | |
| 3704 | return ME_ERRNO_SUCCESS; |
| 3705 | } |
| 3706 | |
| 3707 | static int me6000_ao_query_subdevice_caps_args(struct me_subdevice *subdevice, |
| 3708 | int cap, int *args, int count) |
| 3709 | { |
| 3710 | me6000_ao_subdevice_t *instance; |
| 3711 | int err = ME_ERRNO_SUCCESS; |
| 3712 | |
| 3713 | instance = (me6000_ao_subdevice_t *) subdevice; |
| 3714 | |
| 3715 | PDEBUG("executed. idx=%d\n", instance->ao_idx); |
| 3716 | |
| 3717 | if (count != 1) { |
| 3718 | PERROR("Invalid capability argument count.\n"); |
| 3719 | return ME_ERRNO_INVALID_CAP_ARG_COUNT; |
| 3720 | } |
| 3721 | |
| 3722 | switch (cap) { |
| 3723 | case ME_CAP_AI_FIFO_SIZE: |
| 3724 | args[0] = (instance->fifo) ? ME6000_AO_FIFO_COUNT : 0; |
| 3725 | break; |
| 3726 | |
| 3727 | case ME_CAP_AI_BUFFER_SIZE: |
| 3728 | args[0] = |
| 3729 | (instance->circ_buf.buf) ? ME6000_AO_CIRC_BUF_COUNT : 0; |
| 3730 | break; |
| 3731 | |
| 3732 | default: |
| 3733 | PERROR("Invalid capability.\n"); |
| 3734 | err = ME_ERRNO_INVALID_CAP; |
| 3735 | args[0] = 0; |
| 3736 | } |
| 3737 | |
| 3738 | return err; |
| 3739 | } |