drivers/staging/comedi/drivers/adl_pci9111.c

   1 /*
   2
   3    comedi/drivers/adl_pci9111.c
   4
   5    Hardware driver for PCI9111 ADLink cards:
   6
   7      PCI-9111HR
   8
   9    Copyright (C) 2002-2005 Emmanuel Pacaud <emmanuel.pacaud@univ-poitiers.fr>
  10
  11     This program is free software; you can redistribute it and/or modify
  12     it under the terms of the GNU General Public License as published by
  13     the Free Software Foundation; either version 2 of the License, or
  14     (at your option) any later version.
  15
  16     This program is distributed in the hope that it will be useful,
  17     but WITHOUT ANY WARRANTY; without even the implied warranty of
  18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19     GNU General Public License for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with this program; if not, write to the Free Software
  23     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24 */
  25
  26 /*
  27 Driver: adl_pci9111
  28 Description: Adlink PCI-9111HR
  29 Author: Emmanuel Pacaud <emmanuel.pacaud@univ-poitiers.fr>
  30 Devices: [ADLink] PCI-9111HR (adl_pci9111)
  31 Status: experimental
  32
  33 Supports:
  34
  35   - ai_insn read
  36   - ao_insn read/write
  37   - di_insn read
  38   - do_insn read/write
  39   - ai_do_cmd mode with the following sources:
  40
  41     - start_src                 TRIG_NOW
  42     - scan_begin_src            TRIG_FOLLOW     TRIG_TIMER      TRIG_EXT
  43     - convert_src                               TRIG_TIMER      TRIG_EXT
  44     - scan_end_src              TRIG_COUNT
  45     - stop_src                  TRIG_COUNT      TRIG_NONE
  46
  47     The scanned channels must be consecutive and start from 0. They must
  48     all have the same range and aref.
  49
  50 Configuration options:
  51
  52     [0] - PCI bus number (optional)
  53     [1] - PCI slot number (optional)
  54
  55     If bus/slot is not specified, the first available PCI
  56     device will be used.
  57
  58 */
  59
  60 /*
  61 CHANGELOG:
  62
  63   2005/02/17 Extend AI streaming capabilities. Now, scan_begin_arg can be
  64   a multiple of chanlist_len*convert_arg.
  65   2002/02/19 Fixed the two's complement conversion in pci9111_(hr_)ai_get_data.
  66   2002/02/18 Added external trigger support for analog input.
  67
  68 TODO:
  69
  70   - Really test implemented functionality.
  71   - Add support for the PCI-9111DG with a probe routine to identify the card type
  72     (perhaps with the help of the channel number readback of the A/D Data register).
  73   - Add external multiplexer support.
  74
  75 */
  76
  77 #include "../comedidev.h"
  78
  79 #include <linux/delay.h>
  80 #include <linux/interrupt.h>
  81
  82 #include "8253.h"
  83 #include "comedi_pci.h"
  84 #include "comedi_fc.h"
  85
  86 #define PCI9111_DRIVER_NAME     "adl_pci9111"
  87 #define PCI9111_HR_DEVICE_ID    0x9111
  88
  89 /*  TODO: Add other pci9111 board id */
  90
  91 #define PCI9111_IO_RANGE        0x0100
  92
  93 #define PCI9111_FIFO_HALF_SIZE  512
  94
  95 #define PCI9111_AI_CHANNEL_NBR                  16
  96
  97 #define PCI9111_AI_RESOLUTION                   12
  98 #define PCI9111_AI_RESOLUTION_MASK              0x0FFF
  99 #define PCI9111_AI_RESOLUTION_2_CMP_BIT         0x0800
 100
 101 #define PCI9111_HR_AI_RESOLUTION                16
 102 #define PCI9111_HR_AI_RESOLUTION_MASK           0xFFFF
 103 #define PCI9111_HR_AI_RESOLUTION_2_CMP_BIT      0x8000
 104
 105 #define PCI9111_AI_ACQUISITION_PERIOD_MIN_NS    10000
 106 #define PCI9111_AO_CHANNEL_NBR                  1
 107 #define PCI9111_AO_RESOLUTION                   12
 108 #define PCI9111_AO_RESOLUTION_MASK              0x0FFF
 109 #define PCI9111_DI_CHANNEL_NBR                  16
 110 #define PCI9111_DO_CHANNEL_NBR                  16
 111 #define PCI9111_DO_MASK                         0xFFFF
 112
 113 #define PCI9111_RANGE_SETTING_DELAY             10
 114 #define PCI9111_AI_INSTANT_READ_UDELAY_US       2
 115 #define PCI9111_AI_INSTANT_READ_TIMEOUT         100
 116
 117 #define PCI9111_8254_CLOCK_PERIOD_NS            500
 118
 119 #define PCI9111_8254_COUNTER_0                  0x00
 120 #define PCI9111_8254_COUNTER_1                  0x40
 121 #define PCI9111_8254_COUNTER_2                  0x80
 122 #define PCI9111_8254_COUNTER_LATCH              0x00
 123 #define PCI9111_8254_READ_LOAD_LSB_ONLY         0x10
 124 #define PCI9111_8254_READ_LOAD_MSB_ONLY         0x20
 125 #define PCI9111_8254_READ_LOAD_LSB_MSB          0x30
 126 #define PCI9111_8254_MODE_0                     0x00
 127 #define PCI9111_8254_MODE_1                     0x02
 128 #define PCI9111_8254_MODE_2                     0x04
 129 #define PCI9111_8254_MODE_3                     0x06
 130 #define PCI9111_8254_MODE_4                     0x08
 131 #define PCI9111_8254_MODE_5                     0x0A
 132 #define PCI9111_8254_BINARY_COUNTER             0x00
 133 #define PCI9111_8254_BCD_COUNTER                0x01
 134
 135 /* IO address map */
 136
 137 #define PCI9111_REGISTER_AD_FIFO_VALUE                  0x00    /*  AD Data stored in FIFO */
 138 #define PCI9111_REGISTER_DA_OUTPUT                      0x00
 139 #define PCI9111_REGISTER_DIGITAL_IO                     0x02
 140 #define PCI9111_REGISTER_EXTENDED_IO_PORTS              0x04
 141 #define PCI9111_REGISTER_AD_CHANNEL_CONTROL             0x06    /*  Channel selection */
 142 #define PCI9111_REGISTER_AD_CHANNEL_READBACK            0x06
 143 #define PCI9111_REGISTER_INPUT_SIGNAL_RANGE             0x08
 144 #define PCI9111_REGISTER_RANGE_STATUS_READBACK          0x08
 145 #define PCI9111_REGISTER_TRIGGER_MODE_CONTROL           0x0A
 146 #define PCI9111_REGISTER_AD_MODE_INTERRUPT_READBACK     0x0A
 147 #define PCI9111_REGISTER_SOFTWARE_TRIGGER               0x0E
 148 #define PCI9111_REGISTER_INTERRUPT_CONTROL              0x0C
 149 #define PCI9111_REGISTER_8254_COUNTER_0                 0x40
 150 #define PCI9111_REGISTER_8254_COUNTER_1                 0x42
 151 #define PCI9111_REGISTER_8254_COUNTER_2                 0X44
 152 #define PCI9111_REGISTER_8254_CONTROL                   0x46
 153 #define PCI9111_REGISTER_INTERRUPT_CLEAR                0x48
 154
 155 #define PCI9111_TRIGGER_MASK                            0x0F
 156 #define PCI9111_PTRG_OFF                                (0 << 3)
 157 #define PCI9111_PTRG_ON                                 (1 << 3)
 158 #define PCI9111_EITS_EXTERNAL                           (1 << 2)
 159 #define PCI9111_EITS_INTERNAL                           (0 << 2)
 160 #define PCI9111_TPST_SOFTWARE_TRIGGER                   (0 << 1)
 161 #define PCI9111_TPST_TIMER_PACER                        (1 << 1)
 162 #define PCI9111_ASCAN_ON                                (1 << 0)
 163 #define PCI9111_ASCAN_OFF                               (0 << 0)
 164
 165 #define PCI9111_ISC0_SET_IRQ_ON_ENDING_OF_AD_CONVERSION (0 << 0)
 166 #define PCI9111_ISC0_SET_IRQ_ON_FIFO_HALF_FULL          (1 << 0)
 167 #define PCI9111_ISC1_SET_IRQ_ON_TIMER_TICK              (0 << 1)
 168 #define PCI9111_ISC1_SET_IRQ_ON_EXT_TRG                 (1 << 1)
 169 #define PCI9111_FFEN_SET_FIFO_ENABLE                    (0 << 2)
 170 #define PCI9111_FFEN_SET_FIFO_DISABLE                   (1 << 2)
 171
 172 #define PCI9111_CHANNEL_MASK                            0x0F
 173
 174 #define PCI9111_RANGE_MASK                              0x07
 175 #define PCI9111_FIFO_EMPTY_MASK                         0x10
 176 #define PCI9111_FIFO_HALF_FULL_MASK                     0x20
 177 #define PCI9111_FIFO_FULL_MASK                          0x40
 178 #define PCI9111_AD_BUSY_MASK                            0x80
 179
 180 #define PCI9111_IO_BASE dev->iobase
 181
 182 /*
 183  * Define inlined function
 184  */
 185
 186 #define pci9111_trigger_and_autoscan_get() \
 187   (inb(PCI9111_IO_BASE+PCI9111_REGISTER_AD_MODE_INTERRUPT_READBACK)&0x0F)
 188
 189 #define pci9111_trigger_and_autoscan_set(flags) \
 190   outb(flags, PCI9111_IO_BASE+PCI9111_REGISTER_TRIGGER_MODE_CONTROL)
 191
 192 #define pci9111_interrupt_and_fifo_get() \
 193   ((inb(PCI9111_IO_BASE+PCI9111_REGISTER_AD_MODE_INTERRUPT_READBACK) >> 4) &0x03)
 194
 195 #define pci9111_interrupt_and_fifo_set(flags) \
 196   outb(flags, PCI9111_IO_BASE+PCI9111_REGISTER_INTERRUPT_CONTROL)
 197
 198 #define pci9111_interrupt_clear() \
 199   outb(0, PCI9111_IO_BASE+PCI9111_REGISTER_INTERRUPT_CLEAR)
 200
 201 #define pci9111_software_trigger() \
 202   outb(0, PCI9111_IO_BASE+PCI9111_REGISTER_SOFTWARE_TRIGGER)
 203
 204 #define pci9111_fifo_reset() \
 205   outb(PCI9111_FFEN_SET_FIFO_ENABLE, PCI9111_IO_BASE+PCI9111_REGISTER_INTERRUPT_CONTROL); \
 206   outb(PCI9111_FFEN_SET_FIFO_DISABLE, PCI9111_IO_BASE+PCI9111_REGISTER_INTERRUPT_CONTROL); \
 207   outb(PCI9111_FFEN_SET_FIFO_ENABLE, PCI9111_IO_BASE+PCI9111_REGISTER_INTERRUPT_CONTROL)
 208
 209 #define pci9111_is_fifo_full() \
 210   ((inb(PCI9111_IO_BASE+PCI9111_REGISTER_RANGE_STATUS_READBACK)& \
 211     PCI9111_FIFO_FULL_MASK)==0)
 212
 213 #define pci9111_is_fifo_half_full() \
 214   ((inb(PCI9111_IO_BASE+PCI9111_REGISTER_RANGE_STATUS_READBACK)& \
 215     PCI9111_FIFO_HALF_FULL_MASK)==0)
 216
 217 #define pci9111_is_fifo_empty() \
 218   ((inb(PCI9111_IO_BASE+PCI9111_REGISTER_RANGE_STATUS_READBACK)& \
 219     PCI9111_FIFO_EMPTY_MASK)==0)
 220
 221 #define pci9111_ai_channel_set(channel) \
 222   outb((channel)&PCI9111_CHANNEL_MASK, PCI9111_IO_BASE+PCI9111_REGISTER_AD_CHANNEL_CONTROL)
 223
 224 #define pci9111_ai_channel_get() \
 225   inb(PCI9111_IO_BASE+PCI9111_REGISTER_AD_CHANNEL_READBACK)&PCI9111_CHANNEL_MASK
 226
 227 #define pci9111_ai_range_set(range) \
 228   outb((range)&PCI9111_RANGE_MASK, PCI9111_IO_BASE+PCI9111_REGISTER_INPUT_SIGNAL_RANGE)
 229
 230 #define pci9111_ai_range_get() \
 231   inb(PCI9111_IO_BASE+PCI9111_REGISTER_RANGE_STATUS_READBACK)&PCI9111_RANGE_MASK
 232
 233 #define pci9111_ai_get_data() \
 234   ((inw(PCI9111_IO_BASE+PCI9111_REGISTER_AD_FIFO_VALUE)>>4)&PCI9111_AI_RESOLUTION_MASK) \
 235   ^ PCI9111_AI_RESOLUTION_2_CMP_BIT
 236
 237 #define pci9111_hr_ai_get_data() \
 238   (inw(PCI9111_IO_BASE+PCI9111_REGISTER_AD_FIFO_VALUE) & PCI9111_HR_AI_RESOLUTION_MASK) \
 239   ^ PCI9111_HR_AI_RESOLUTION_2_CMP_BIT
 240
 241 #define pci9111_ao_set_data(data) \
 242   outw(data&PCI9111_AO_RESOLUTION_MASK, PCI9111_IO_BASE+PCI9111_REGISTER_DA_OUTPUT)
 243
 244 #define pci9111_di_get_bits() \
 245   inw(PCI9111_IO_BASE+PCI9111_REGISTER_DIGITAL_IO)
 246
 247 #define pci9111_do_set_bits(bits) \
 248   outw(bits, PCI9111_IO_BASE+PCI9111_REGISTER_DIGITAL_IO)
 249
 250 #define pci9111_8254_control_set(flags) \
 251   outb(flags, PCI9111_IO_BASE+PCI9111_REGISTER_8254_CONTROL)
 252
 253 #define pci9111_8254_counter_0_set(data) \
 254   outb(data & 0xFF, PCI9111_IO_BASE+PCI9111_REGISTER_8254_COUNTER_0); \
 255   outb((data >> 8) & 0xFF, PCI9111_IO_BASE+PCI9111_REGISTER_8254_COUNTER_0)
 256
 257 #define pci9111_8254_counter_1_set(data) \
 258   outb(data & 0xFF, PCI9111_IO_BASE+PCI9111_REGISTER_8254_COUNTER_1); \
 259   outb((data >> 8) & 0xFF, PCI9111_IO_BASE+PCI9111_REGISTER_8254_COUNTER_1)
 260
 261 #define pci9111_8254_counter_2_set(data) \
 262   outb(data & 0xFF, PCI9111_IO_BASE+PCI9111_REGISTER_8254_COUNTER_2); \
 263   outb((data >> 8) & 0xFF, PCI9111_IO_BASE+PCI9111_REGISTER_8254_COUNTER_2)
 264
 265 /*  Function prototypes */
 266
 267 static int pci9111_attach(struct comedi_device *dev,
 268                           struct comedi_devconfig *it);
 269 static int pci9111_detach(struct comedi_device *dev);
 270 static void pci9111_ai_munge(struct comedi_device *dev,
 271                              struct comedi_subdevice *s, void *data,
 272                              unsigned int num_bytes,
 273                              unsigned int start_chan_index);
 274
 275 static const struct comedi_lrange pci9111_hr_ai_range = {
 276         5,
 277         {
 278          BIP_RANGE(10),
 279          BIP_RANGE(5),
 280          BIP_RANGE(2.5),
 281          BIP_RANGE(1.25),
 282          BIP_RANGE(0.625)
 283          }
 284 };
 285
 286 static DEFINE_PCI_DEVICE_TABLE(pci9111_pci_table) = {
 287         {
 288         PCI_VENDOR_ID_ADLINK, PCI9111_HR_DEVICE_ID, PCI_ANY_ID,
 289                     PCI_ANY_ID, 0, 0, 0},
 290             /* { PCI_VENDOR_ID_ADLINK, PCI9111_HG_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */
 291         {
 292         0}
 293 };
 294
 295 MODULE_DEVICE_TABLE(pci, pci9111_pci_table);
 296
 297 /*  */
 298 /*  Board specification structure */
 299 /*  */
 300
 301 struct pci9111_board {
 302         const char *name;       /*  driver name */
 303         int device_id;
 304         int ai_channel_nbr;     /*  num of A/D chans */
 305         int ao_channel_nbr;     /*  num of D/A chans */
 306         int ai_resolution;      /*  resolution of A/D */
 307         int ai_resolution_mask;
 308         int ao_resolution;      /*  resolution of D/A */
 309         int ao_resolution_mask;
 310         const struct comedi_lrange *ai_range_list;      /*  rangelist for A/D */
 311         const struct comedi_lrange *ao_range_list;      /*  rangelist for D/A */
 312         unsigned int ai_acquisition_period_min_ns;
 313 };
 314
 315 static const struct pci9111_board pci9111_boards[] = {
 316         {
 317          .name = "pci9111_hr",
 318          .device_id = PCI9111_HR_DEVICE_ID,
 319          .ai_channel_nbr = PCI9111_AI_CHANNEL_NBR,
 320          .ao_channel_nbr = PCI9111_AO_CHANNEL_NBR,
 321          .ai_resolution = PCI9111_HR_AI_RESOLUTION,
 322          .ai_resolution_mask = PCI9111_HR_AI_RESOLUTION_MASK,
 323          .ao_resolution = PCI9111_AO_RESOLUTION,
 324          .ao_resolution_mask = PCI9111_AO_RESOLUTION_MASK,
 325          .ai_range_list = &pci9111_hr_ai_range,
 326          .ao_range_list = &range_bipolar10,
 327          .ai_acquisition_period_min_ns = PCI9111_AI_ACQUISITION_PERIOD_MIN_NS}
 328 };
 329
 330 #define pci9111_board_nbr \
 331   (sizeof(pci9111_boards)/sizeof(struct pci9111_board))
 332
 333 static struct comedi_driver pci9111_driver = {
 334         .driver_name = PCI9111_DRIVER_NAME,
 335         .module = THIS_MODULE,
 336         .attach = pci9111_attach,
 337         .detach = pci9111_detach,
 338 };
 339
 340 COMEDI_PCI_INITCLEANUP(pci9111_driver, pci9111_pci_table);
 341
 342 /*  Private data structure */
 343
 344 struct pci9111_private_data {
 345         struct pci_dev *pci_device;
 346         unsigned long io_range; /*  PCI6503 io range */
 347
 348         unsigned long lcr_io_base;      /*  Local configuration register base address */
 349         unsigned long lcr_io_range;
 350
 351         int stop_counter;
 352         int stop_is_none;
 353
 354         unsigned int scan_delay;
 355         unsigned int chanlist_len;
 356         unsigned int chunk_counter;
 357         unsigned int chunk_num_samples;
 358
 359         int ao_readback;        /*  Last written analog output data */
 360
 361         unsigned int timer_divisor_1;   /*  Divisor values for the 8254 timer pacer */
 362         unsigned int timer_divisor_2;
 363
 364         int is_valid;           /*  Is device valid */
 365
 366         short ai_bounce_buffer[2 * PCI9111_FIFO_HALF_SIZE];
 367 };
 368
 369 #define dev_private     ((struct pci9111_private_data *)dev->private)
 370
 371 /*  ------------------------------------------------------------------ */
 372 /*  PLX9050 SECTION */
 373 /*  ------------------------------------------------------------------ */
 374
 375 #define PLX9050_REGISTER_INTERRUPT_CONTROL 0x4c
 376
 377 #define PLX9050_LINTI1_ENABLE           (1 << 0)
 378 #define PLX9050_LINTI1_ACTIVE_HIGH      (1 << 1)
 379 #define PLX9050_LINTI1_STATUS           (1 << 2)
 380 #define PLX9050_LINTI2_ENABLE           (1 << 3)
 381 #define PLX9050_LINTI2_ACTIVE_HIGH      (1 << 4)
 382 #define PLX9050_LINTI2_STATUS           (1 << 5)
 383 #define PLX9050_PCI_INTERRUPT_ENABLE    (1 << 6)
 384 #define PLX9050_SOFTWARE_INTERRUPT      (1 << 7)
 385
 386 static void plx9050_interrupt_control(unsigned long io_base,
 387                                       bool LINTi1_enable,
 388                                       bool LINTi1_active_high,
 389                                       bool LINTi2_enable,
 390                                       bool LINTi2_active_high,
 391                                       bool interrupt_enable)
 392 {
 393         int flags = 0;
 394
 395         if (LINTi1_enable)
 396                 flags |= PLX9050_LINTI1_ENABLE;
 397         if (LINTi1_active_high)
 398                 flags |= PLX9050_LINTI1_ACTIVE_HIGH;
 399         if (LINTi2_enable)
 400                 flags |= PLX9050_LINTI2_ENABLE;
 401         if (LINTi2_active_high)
 402                 flags |= PLX9050_LINTI2_ACTIVE_HIGH;
 403
 404         if (interrupt_enable)
 405                 flags |= PLX9050_PCI_INTERRUPT_ENABLE;
 406
 407         outb(flags, io_base + PLX9050_REGISTER_INTERRUPT_CONTROL);
 408 }
 409
 410 /*  ------------------------------------------------------------------ */
 411 /*  MISCELLANEOUS SECTION */
 412 /*  ------------------------------------------------------------------ */
 413
 414 /*  8254 timer */
 415
 416 static void pci9111_timer_set(struct comedi_device *dev)
 417 {
 418         pci9111_8254_control_set(PCI9111_8254_COUNTER_0 |
 419                                  PCI9111_8254_READ_LOAD_LSB_MSB |
 420                                  PCI9111_8254_MODE_0 |
 421                                  PCI9111_8254_BINARY_COUNTER);
 422
 423         pci9111_8254_control_set(PCI9111_8254_COUNTER_1 |
 424                                  PCI9111_8254_READ_LOAD_LSB_MSB |
 425                                  PCI9111_8254_MODE_2 |
 426                                  PCI9111_8254_BINARY_COUNTER);
 427
 428         pci9111_8254_control_set(PCI9111_8254_COUNTER_2 |
 429                                  PCI9111_8254_READ_LOAD_LSB_MSB |
 430                                  PCI9111_8254_MODE_2 |
 431                                  PCI9111_8254_BINARY_COUNTER);
 432
 433         udelay(1);
 434
 435         pci9111_8254_counter_2_set(dev_private->timer_divisor_2);
 436         pci9111_8254_counter_1_set(dev_private->timer_divisor_1);
 437 }
 438
 439 enum pci9111_trigger_sources {
 440         software,
 441         timer_pacer,
 442         external
 443 };
 444
 445 static void pci9111_trigger_source_set(struct comedi_device *dev,
 446                                        enum pci9111_trigger_sources source)
 447 {
 448         int flags;
 449
 450         flags = pci9111_trigger_and_autoscan_get() & 0x09;
 451
 452         switch (source) {
 453         case software:
 454                 flags |= PCI9111_EITS_INTERNAL | PCI9111_TPST_SOFTWARE_TRIGGER;
 455                 break;
 456
 457         case timer_pacer:
 458                 flags |= PCI9111_EITS_INTERNAL | PCI9111_TPST_TIMER_PACER;
 459                 break;
 460
 461         case external:
 462                 flags |= PCI9111_EITS_EXTERNAL;
 463                 break;
 464         }
 465
 466         pci9111_trigger_and_autoscan_set(flags);
 467 }
 468
 469 static void pci9111_pretrigger_set(struct comedi_device *dev, bool pretrigger)
 470 {
 471         int flags;
 472
 473         flags = pci9111_trigger_and_autoscan_get() & 0x07;
 474
 475         if (pretrigger)
 476                 flags |= PCI9111_PTRG_ON;
 477
 478         pci9111_trigger_and_autoscan_set(flags);
 479 }
 480
 481 static void pci9111_autoscan_set(struct comedi_device *dev, bool autoscan)
 482 {
 483         int flags;
 484
 485         flags = pci9111_trigger_and_autoscan_get() & 0x0e;
 486
 487         if (autoscan)
 488                 flags |= PCI9111_ASCAN_ON;
 489
 490         pci9111_trigger_and_autoscan_set(flags);
 491 }
 492
 493 enum pci9111_ISC0_sources {
 494         irq_on_eoc,
 495         irq_on_fifo_half_full
 496 };
 497
 498 enum pci9111_ISC1_sources {
 499         irq_on_timer_tick,
 500         irq_on_external_trigger
 501 };
 502
 503 static void pci9111_interrupt_source_set(struct comedi_device *dev,
 504                                          enum pci9111_ISC0_sources irq_0_source,
 505                                          enum pci9111_ISC1_sources irq_1_source)
 506 {
 507         int flags;
 508
 509         flags = pci9111_interrupt_and_fifo_get() & 0x04;
 510
 511         if (irq_0_source == irq_on_fifo_half_full)
 512                 flags |= PCI9111_ISC0_SET_IRQ_ON_FIFO_HALF_FULL;
 513
 514         if (irq_1_source == irq_on_external_trigger)
 515                 flags |= PCI9111_ISC1_SET_IRQ_ON_EXT_TRG;
 516
 517         pci9111_interrupt_and_fifo_set(flags);
 518 }
 519
 520 /*  ------------------------------------------------------------------ */
 521 /*  HARDWARE TRIGGERED ANALOG INPUT SECTION */
 522 /*  ------------------------------------------------------------------ */
 523
 524 /*  Cancel analog input autoscan */
 525
 526 #undef AI_DO_CMD_DEBUG
 527
 528 static int pci9111_ai_cancel(struct comedi_device *dev,
 529                              struct comedi_subdevice *s)
 530 {
 531         /*  Disable interrupts */
 532
 533         plx9050_interrupt_control(dev_private->lcr_io_base, true, true, true,
 534                                   true, false);
 535
 536         pci9111_trigger_source_set(dev, software);
 537
 538         pci9111_autoscan_set(dev, false);
 539
 540         pci9111_fifo_reset();
 541
 542 #ifdef AI_DO_CMD_DEBUG
 543         printk(PCI9111_DRIVER_NAME ": ai_cancel\n");
 544 #endif
 545
 546         return 0;
 547 }
 548
 549 /*  Test analog input command */
 550
 551 #define pci9111_check_trigger_src(src, flags) \
 552   tmp = src; \
 553   src &= flags; \
 554   if (!src || tmp != src) error++
 555
 556 static int
 557 pci9111_ai_do_cmd_test(struct comedi_device *dev,
 558                        struct comedi_subdevice *s, struct comedi_cmd *cmd)
 559 {
 560         int tmp;
 561         int error = 0;
 562         int range, reference;
 563         int i;
 564         struct pci9111_board *board = (struct pci9111_board *)dev->board_ptr;
 565
 566         /*  Step 1 : check if trigger are trivialy valid */
 567
 568         pci9111_check_trigger_src(cmd->start_src, TRIG_NOW);
 569         pci9111_check_trigger_src(cmd->scan_begin_src,
 570                                   TRIG_TIMER | TRIG_FOLLOW | TRIG_EXT);
 571         pci9111_check_trigger_src(cmd->convert_src, TRIG_TIMER | TRIG_EXT);
 572         pci9111_check_trigger_src(cmd->scan_end_src, TRIG_COUNT);
 573         pci9111_check_trigger_src(cmd->stop_src, TRIG_COUNT | TRIG_NONE);
 574
 575         if (error)
 576                 return 1;
 577
 578         /*  step 2 : make sure trigger sources are unique and mutually compatible */
 579
 580         if (cmd->start_src != TRIG_NOW)
 581                 error++;
 582
 583         if ((cmd->scan_begin_src != TRIG_TIMER) &&
 584             (cmd->scan_begin_src != TRIG_FOLLOW) &&
 585             (cmd->scan_begin_src != TRIG_EXT))
 586                 error++;
 587
 588         if ((cmd->convert_src != TRIG_TIMER) && (cmd->convert_src != TRIG_EXT))
 589                 error++;
 590         if ((cmd->convert_src == TRIG_TIMER) &&
 591             !((cmd->scan_begin_src == TRIG_TIMER) ||
 592               (cmd->scan_begin_src == TRIG_FOLLOW)))
 593                 error++;
 594         if ((cmd->convert_src == TRIG_EXT) &&
 595             !((cmd->scan_begin_src == TRIG_EXT) ||
 596               (cmd->scan_begin_src == TRIG_FOLLOW)))
 597                 error++;
 598
 599
 600         if (cmd->scan_end_src != TRIG_COUNT)
 601                 error++;
 602         if ((cmd->stop_src != TRIG_COUNT) && (cmd->stop_src != TRIG_NONE))
 603                 error++;
 604
 605         if (error)
 606                 return 2;
 607
 608         /*  Step 3 : make sure arguments are trivialy compatible */
 609
 610         if (cmd->chanlist_len < 1) {
 611                 cmd->chanlist_len = 1;
 612                 error++;
 613         }
 614
 615         if (cmd->chanlist_len > board->ai_channel_nbr) {
 616                 cmd->chanlist_len = board->ai_channel_nbr;
 617                 error++;
 618         }
 619
 620         if ((cmd->start_src == TRIG_NOW) && (cmd->start_arg != 0)) {
 621                 cmd->start_arg = 0;
 622                 error++;
 623         }
 624
 625         if ((cmd->convert_src == TRIG_TIMER) &&
 626             (cmd->convert_arg < board->ai_acquisition_period_min_ns)) {
 627                 cmd->convert_arg = board->ai_acquisition_period_min_ns;
 628                 error++;
 629         }
 630         if ((cmd->convert_src == TRIG_EXT) && (cmd->convert_arg != 0)) {
 631                 cmd->convert_arg = 0;
 632                 error++;
 633         }
 634
 635         if ((cmd->scan_begin_src == TRIG_TIMER) &&
 636             (cmd->scan_begin_arg < board->ai_acquisition_period_min_ns)) {
 637                 cmd->scan_begin_arg = board->ai_acquisition_period_min_ns;
 638                 error++;
 639         }
 640         if ((cmd->scan_begin_src == TRIG_FOLLOW) && (cmd->scan_begin_arg != 0)) {
 641                 cmd->scan_begin_arg = 0;
 642                 error++;
 643         }
 644         if ((cmd->scan_begin_src == TRIG_EXT) && (cmd->scan_begin_arg != 0)) {
 645                 cmd->scan_begin_arg = 0;
 646                 error++;
 647         }
 648
 649         if ((cmd->scan_end_src == TRIG_COUNT) &&
 650             (cmd->scan_end_arg != cmd->chanlist_len)) {
 651                 cmd->scan_end_arg = cmd->chanlist_len;
 652                 error++;
 653         }
 654
 655         if ((cmd->stop_src == TRIG_COUNT) && (cmd->stop_arg < 1)) {
 656                 cmd->stop_arg = 1;
 657                 error++;
 658         }
 659         if ((cmd->stop_src == TRIG_NONE) && (cmd->stop_arg != 0)) {
 660                 cmd->stop_arg = 0;
 661                 error++;
 662         }
 663
 664         if (error)
 665                 return 3;
 666
 667         /*  Step 4 : fix up any arguments */
 668
 669         if (cmd->convert_src == TRIG_TIMER) {
 670                 tmp = cmd->convert_arg;
 671                 i8253_cascade_ns_to_timer_2div(PCI9111_8254_CLOCK_PERIOD_NS,
 672                                                &(dev_private->timer_divisor_1),
 673                                                &(dev_private->timer_divisor_2),
 674                                                &(cmd->convert_arg),
 675                                                cmd->flags & TRIG_ROUND_MASK);
 676                 if (tmp != cmd->convert_arg)
 677                         error++;
 678         }
 679         /*  There's only one timer on this card, so the scan_begin timer must */
 680         /*  be a multiple of chanlist_len*convert_arg */
 681
 682         if (cmd->scan_begin_src == TRIG_TIMER) {
 683
 684                 unsigned int scan_begin_min;
 685                 unsigned int scan_begin_arg;
 686                 unsigned int scan_factor;
 687
 688                 scan_begin_min = cmd->chanlist_len * cmd->convert_arg;
 689
 690                 if (cmd->scan_begin_arg != scan_begin_min) {
 691                         if (scan_begin_min < cmd->scan_begin_arg) {
 692                                 scan_factor =
 693                                     cmd->scan_begin_arg / scan_begin_min;
 694                                 scan_begin_arg = scan_factor * scan_begin_min;
 695                                 if (cmd->scan_begin_arg != scan_begin_arg) {
 696                                         cmd->scan_begin_arg = scan_begin_arg;
 697                                         error++;
 698                                 }
 699                         } else {
 700                                 cmd->scan_begin_arg = scan_begin_min;
 701                                 error++;
 702                         }
 703                 }
 704         }
 705
 706         if (error)
 707                 return 4;
 708
 709         /*  Step 5 : check channel list */
 710
 711         if (cmd->chanlist) {
 712
 713                 range = CR_RANGE(cmd->chanlist[0]);
 714                 reference = CR_AREF(cmd->chanlist[0]);
 715
 716                 if (cmd->chanlist_len > 1) {
 717                         for (i = 0; i < cmd->chanlist_len; i++) {
 718                                 if (CR_CHAN(cmd->chanlist[i]) != i) {
 719                                         comedi_error(dev,
 720                                                      "entries in chanlist must be consecutive "
 721                                                      "channels,counting upwards from 0\n");
 722                                         error++;
 723                                 }
 724                                 if (CR_RANGE(cmd->chanlist[i]) != range) {
 725                                         comedi_error(dev,
 726                                                      "entries in chanlist must all have the same gain\n");
 727                                         error++;
 728                                 }
 729                                 if (CR_AREF(cmd->chanlist[i]) != reference) {
 730                                         comedi_error(dev,
 731                                                      "entries in chanlist must all have the same reference\n");
 732                                         error++;
 733                                 }
 734                         }
 735                 } else {
 736                         if ((CR_CHAN(cmd->chanlist[0]) >
 737                              (board->ai_channel_nbr - 1))
 738                             || (CR_CHAN(cmd->chanlist[0]) < 0)) {
 739                                 comedi_error(dev,
 740                                              "channel number is out of limits\n");
 741                                 error++;
 742                         }
 743                 }
 744         }
 745
 746         if (error)
 747                 return 5;
 748
 749         return 0;
 750
 751 }
 752
 753 /*  Analog input command */
 754
 755 static int pci9111_ai_do_cmd(struct comedi_device *dev,
 756                              struct comedi_subdevice *subdevice)
 757 {
 758         struct comedi_cmd *async_cmd = &subdevice->async->cmd;
 759
 760         if (!dev->irq) {
 761                 comedi_error(dev,
 762                              "no irq assigned for PCI9111, cannot do hardware conversion");
 763                 return -1;
 764         }
 765         /*  Set channel scan limit */
 766         /*  PCI9111 allows only scanning from channel 0 to channel n */
 767         /*  TODO: handle the case of an external multiplexer */
 768
 769         if (async_cmd->chanlist_len > 1) {
 770                 pci9111_ai_channel_set((async_cmd->chanlist_len) - 1);
 771                 pci9111_autoscan_set(dev, true);
 772         } else {
 773                 pci9111_ai_channel_set(CR_CHAN(async_cmd->chanlist[0]));
 774                 pci9111_autoscan_set(dev, false);
 775         }
 776
 777         /*  Set gain */
 778         /*  This is the same gain on every channel */
 779
 780         pci9111_ai_range_set(CR_RANGE(async_cmd->chanlist[0]));
 781
 782         /* Set counter */
 783
 784         switch (async_cmd->stop_src) {
 785         case TRIG_COUNT:
 786                 dev_private->stop_counter =
 787                     async_cmd->stop_arg * async_cmd->chanlist_len;
 788                 dev_private->stop_is_none = 0;
 789                 break;
 790
 791         case TRIG_NONE:
 792                 dev_private->stop_counter = 0;
 793                 dev_private->stop_is_none = 1;
 794                 break;
 795
 796         default:
 797                 comedi_error(dev, "Invalid stop trigger");
 798                 return -1;
 799         }
 800
 801         /*  Set timer pacer */
 802
 803         dev_private->scan_delay = 0;
 804         switch (async_cmd->convert_src) {
 805         case TRIG_TIMER:
 806                 i8253_cascade_ns_to_timer_2div(PCI9111_8254_CLOCK_PERIOD_NS,
 807                                                &(dev_private->timer_divisor_1),
 808                                                &(dev_private->timer_divisor_2),
 809                                                &(async_cmd->convert_arg),
 810                                                async_cmd->
 811                                                flags & TRIG_ROUND_MASK);
 812 #ifdef AI_DO_CMD_DEBUG
 813                 printk(PCI9111_DRIVER_NAME ": divisors = %d, %d\n",
 814                        dev_private->timer_divisor_1,
 815                        dev_private->timer_divisor_2);
 816 #endif
 817
 818                 pci9111_trigger_source_set(dev, software);
 819                 pci9111_timer_set(dev);
 820                 pci9111_fifo_reset();
 821                 pci9111_interrupt_source_set(dev, irq_on_fifo_half_full,
 822                                              irq_on_timer_tick);
 823                 pci9111_trigger_source_set(dev, timer_pacer);
 824                 plx9050_interrupt_control(dev_private->lcr_io_base, true, true,
 825                                           false, true, true);
 826
 827                 if (async_cmd->scan_begin_src == TRIG_TIMER) {
 828                         dev_private->scan_delay =
 829                                 (async_cmd->scan_begin_arg /
 830                                  (async_cmd->convert_arg *
 831                                   async_cmd->chanlist_len)) - 1;
 832                 }
 833
 834                 break;
 835
 836         case TRIG_EXT:
 837
 838                 pci9111_trigger_source_set(dev, external);
 839                 pci9111_fifo_reset();
 840                 pci9111_interrupt_source_set(dev, irq_on_fifo_half_full,
 841                                              irq_on_timer_tick);
 842                 plx9050_interrupt_control(dev_private->lcr_io_base, true, true,
 843                                           false, true, true);
 844
 845                 break;
 846
 847         default:
 848                 comedi_error(dev, "Invalid convert trigger");
 849                 return -1;
 850         }
 851
 852         dev_private->stop_counter *= (1 + dev_private->scan_delay);
 853         dev_private->chanlist_len = async_cmd->chanlist_len;
 854         dev_private->chunk_counter = 0;
 855         dev_private->chunk_num_samples =
 856             dev_private->chanlist_len * (1 + dev_private->scan_delay);
 857
 858 #ifdef AI_DO_CMD_DEBUG
 859         printk(PCI9111_DRIVER_NAME ": start interruptions!\n");
 860         printk(PCI9111_DRIVER_NAME ": trigger source = %2x\n",
 861                pci9111_trigger_and_autoscan_get());
 862         printk(PCI9111_DRIVER_NAME ": irq source     = %2x\n",
 863                pci9111_interrupt_and_fifo_get());
 864         printk(PCI9111_DRIVER_NAME ": ai_do_cmd\n");
 865         printk(PCI9111_DRIVER_NAME ": stop counter   = %d\n",
 866                dev_private->stop_counter);
 867         printk(PCI9111_DRIVER_NAME ": scan delay     = %d\n",
 868                dev_private->scan_delay);
 869         printk(PCI9111_DRIVER_NAME ": chanlist_len   = %d\n",
 870                dev_private->chanlist_len);
 871         printk(PCI9111_DRIVER_NAME ": chunk num samples = %d\n",
 872                dev_private->chunk_num_samples);
 873 #endif
 874
 875         return 0;
 876 }
 877
 878 static void pci9111_ai_munge(struct comedi_device *dev,
 879                              struct comedi_subdevice *s, void *data,
 880                              unsigned int num_bytes,
 881                              unsigned int start_chan_index)
 882 {
 883         unsigned int i, num_samples = num_bytes / sizeof(short);
 884         short *array = data;
 885         int resolution =
 886             ((struct pci9111_board *)dev->board_ptr)->ai_resolution;
 887
 888         for (i = 0; i < num_samples; i++) {
 889                 if (resolution == PCI9111_HR_AI_RESOLUTION)
 890                         array[i] =
 891                             (array[i] & PCI9111_HR_AI_RESOLUTION_MASK) ^
 892                             PCI9111_HR_AI_RESOLUTION_2_CMP_BIT;
 893                 else
 894                         array[i] =
 895                             ((array[i] >> 4) & PCI9111_AI_RESOLUTION_MASK) ^
 896                             PCI9111_AI_RESOLUTION_2_CMP_BIT;
 897         }
 898 }
 899
 900 /*  ------------------------------------------------------------------ */
 901 /*  INTERRUPT SECTION */
 902 /*  ------------------------------------------------------------------ */
 903
 904 #undef INTERRUPT_DEBUG
 905
 906 static irqreturn_t pci9111_interrupt(int irq, void *p_device)
 907 {
 908         struct comedi_device *dev = p_device;
 909         struct comedi_subdevice *subdevice = dev->read_subdev;
 910         struct comedi_async *async;
 911         unsigned long irq_flags;
 912         unsigned char intcsr;
 913
 914         if (!dev->attached) {
 915                 /*  Ignore interrupt before device fully attached. */
 916                 /*  Might not even have allocated subdevices yet! */
 917                 return IRQ_NONE;
 918         }
 919
 920         async = subdevice->async;
 921
 922         spin_lock_irqsave(&dev->spinlock, irq_flags);
 923
 924         /*  Check if we are source of interrupt */
 925         intcsr = inb(dev_private->lcr_io_base +
 926                      PLX9050_REGISTER_INTERRUPT_CONTROL);
 927         if (!(((intcsr & PLX9050_PCI_INTERRUPT_ENABLE) != 0)
 928               && (((intcsr & (PLX9050_LINTI1_ENABLE | PLX9050_LINTI1_STATUS))
 929                    == (PLX9050_LINTI1_ENABLE | PLX9050_LINTI1_STATUS))
 930                   || ((intcsr & (PLX9050_LINTI2_ENABLE | PLX9050_LINTI2_STATUS))
 931                       == (PLX9050_LINTI2_ENABLE | PLX9050_LINTI2_STATUS))))) {
 932                 /*  Not the source of the interrupt. */
 933                 /*  (N.B. not using PLX9050_SOFTWARE_INTERRUPT) */
 934                 spin_unlock_irqrestore(&dev->spinlock, irq_flags);
 935                 return IRQ_NONE;
 936         }
 937
 938         if ((intcsr & (PLX9050_LINTI1_ENABLE | PLX9050_LINTI1_STATUS)) ==
 939             (PLX9050_LINTI1_ENABLE | PLX9050_LINTI1_STATUS)) {
 940                 /*  Interrupt comes from fifo_half-full signal */
 941
 942                 if (pci9111_is_fifo_full()) {
 943                         spin_unlock_irqrestore(&dev->spinlock, irq_flags);
 944                         comedi_error(dev, PCI9111_DRIVER_NAME " fifo overflow");
 945                         pci9111_interrupt_clear();
 946                         pci9111_ai_cancel(dev, subdevice);
 947                         async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
 948                         comedi_event(dev, subdevice);
 949
 950                         return IRQ_HANDLED;
 951                 }
 952
 953                 if (pci9111_is_fifo_half_full()) {
 954                         unsigned int num_samples;
 955                         unsigned int bytes_written = 0;
 956
 957 #ifdef INTERRUPT_DEBUG
 958                         printk(PCI9111_DRIVER_NAME ": fifo is half full\n");
 959 #endif
 960
 961                         num_samples =
 962                             PCI9111_FIFO_HALF_SIZE >
 963                             dev_private->stop_counter
 964                             && !dev_private->
 965                             stop_is_none ? dev_private->stop_counter :
 966                             PCI9111_FIFO_HALF_SIZE;
 967                         insw(PCI9111_IO_BASE + PCI9111_REGISTER_AD_FIFO_VALUE,
 968                              dev_private->ai_bounce_buffer, num_samples);
 969
 970                         if (dev_private->scan_delay < 1) {
 971                                 bytes_written =
 972                                     cfc_write_array_to_buffer(subdevice,
 973                                                               dev_private->
 974                                                               ai_bounce_buffer,
 975                                                               num_samples *
 976                                                               sizeof(short));
 977                         } else {
 978                                 int position = 0;
 979                                 int to_read;
 980
 981                                 while (position < num_samples) {
 982                                         if (dev_private->chunk_counter <
 983                                             dev_private->chanlist_len) {
 984                                                 to_read =
 985                                                     dev_private->chanlist_len -
 986                                                     dev_private->chunk_counter;
 987
 988                                                 if (to_read >
 989                                                     num_samples - position)
 990                                                         to_read =
 991                                                             num_samples -
 992                                                             position;
 993
 994                                                 bytes_written +=
 995                                                     cfc_write_array_to_buffer
 996                                                     (subdevice,
 997                                                      dev_private->ai_bounce_buffer
 998                                                      + position,
 999                                                      to_read * sizeof(short));
1000                                         } else {
1001                                                 to_read =
1002                                                     dev_private->chunk_num_samples
1003                                                     -
1004                                                     dev_private->chunk_counter;
1005                                                 if (to_read >
1006                                                     num_samples - position)
1007                                                         to_read =
1008                                                             num_samples -
1009                                                             position;
1010
1011                                                 bytes_written +=
1012                                                     sizeof(short) * to_read;
1013                                         }
1014
1015                                         position += to_read;
1016                                         dev_private->chunk_counter += to_read;
1017
1018                                         if (dev_private->chunk_counter >=
1019                                             dev_private->chunk_num_samples)
1020                                                 dev_private->chunk_counter = 0;
1021                                 }
1022                         }
1023
1024                         dev_private->stop_counter -=
1025                             bytes_written / sizeof(short);
1026                 }
1027         }
1028
1029         if ((dev_private->stop_counter == 0) && (!dev_private->stop_is_none)) {
1030                 async->events |= COMEDI_CB_EOA;
1031                 pci9111_ai_cancel(dev, subdevice);
1032         }
1033
1034         /* Very important, otherwise another interrupt request will be inserted
1035          * and will cause driver hangs on processing interrupt event. */
1036
1037         pci9111_interrupt_clear();
1038
1039         spin_unlock_irqrestore(&dev->spinlock, irq_flags);
1040
1041         comedi_event(dev, subdevice);
1042
1043         return IRQ_HANDLED;
1044 }
1045
1046 /*  ------------------------------------------------------------------ */
1047 /*  INSTANT ANALOG INPUT OUTPUT SECTION */
1048 /*  ------------------------------------------------------------------ */
1049
1050 /*  analog instant input */
1051
1052 #undef AI_INSN_DEBUG
1053
1054 static int pci9111_ai_insn_read(struct comedi_device *dev,
1055                                 struct comedi_subdevice *subdevice,
1056                                 struct comedi_insn *insn, unsigned int *data)
1057 {
1058         int resolution =
1059             ((struct pci9111_board *)dev->board_ptr)->ai_resolution;
1060
1061         int timeout, i;
1062
1063 #ifdef AI_INSN_DEBUG
1064         printk(PCI9111_DRIVER_NAME ": ai_insn set c/r/n = %2x/%2x/%2x\n",
1065                CR_CHAN((&insn->chanspec)[0]),
1066                CR_RANGE((&insn->chanspec)[0]), insn->n);
1067 #endif
1068
1069         pci9111_ai_channel_set(CR_CHAN((&insn->chanspec)[0]));
1070
1071         if ((pci9111_ai_range_get()) != CR_RANGE((&insn->chanspec)[0]))
1072                 pci9111_ai_range_set(CR_RANGE((&insn->chanspec)[0]));
1073
1074         pci9111_fifo_reset();
1075
1076         for (i = 0; i < insn->n; i++) {
1077                 pci9111_software_trigger();
1078
1079                 timeout = PCI9111_AI_INSTANT_READ_TIMEOUT;
1080
1081                 while (timeout--) {
1082                         if (!pci9111_is_fifo_empty())
1083                                 goto conversion_done;
1084                 }
1085
1086                 comedi_error(dev, "A/D read timeout");
1087                 data[i] = 0;
1088                 pci9111_fifo_reset();
1089                 return -ETIME;
1090
1091 conversion_done:
1092
1093                 if (resolution == PCI9111_HR_AI_RESOLUTION)
1094                         data[i] = pci9111_hr_ai_get_data();
1095                 else
1096                         data[i] = pci9111_ai_get_data();
1097         }
1098
1099 #ifdef AI_INSN_DEBUG
1100         printk(PCI9111_DRIVER_NAME ": ai_insn get c/r/t = %2x/%2x/%2x\n",
1101                pci9111_ai_channel_get(),
1102                pci9111_ai_range_get(), pci9111_trigger_and_autoscan_get());
1103 #endif
1104
1105         return i;
1106 }
1107
1108 /*  Analog instant output */
1109
1110 static int
1111 pci9111_ao_insn_write(struct comedi_device *dev,
1112                       struct comedi_subdevice *s, struct comedi_insn *insn,
1113                       unsigned int *data)
1114 {
1115         int i;
1116
1117         for (i = 0; i < insn->n; i++) {
1118                 pci9111_ao_set_data(data[i]);
1119                 dev_private->ao_readback = data[i];
1120         }
1121
1122         return i;
1123 }
1124
1125 /*  Analog output readback */
1126
1127 static int pci9111_ao_insn_read(struct comedi_device *dev,
1128                                 struct comedi_subdevice *s,
1129                                 struct comedi_insn *insn, unsigned int *data)
1130 {
1131         int i;
1132
1133         for (i = 0; i < insn->n; i++)
1134                 data[i] = dev_private->ao_readback & PCI9111_AO_RESOLUTION_MASK;
1135
1136         return i;
1137 }
1138
1139 /*  ------------------------------------------------------------------ */
1140 /*  DIGITAL INPUT OUTPUT SECTION */
1141 /*  ------------------------------------------------------------------ */
1142
1143 /*  Digital inputs */
1144
1145 static int pci9111_di_insn_bits(struct comedi_device *dev,
1146                                 struct comedi_subdevice *subdevice,
1147                                 struct comedi_insn *insn, unsigned int *data)
1148 {
1149         unsigned int bits;
1150
1151         bits = pci9111_di_get_bits();
1152         data[1] = bits;
1153
1154         return 2;
1155 }
1156
1157 /*  Digital outputs */
1158
1159 static int pci9111_do_insn_bits(struct comedi_device *dev,
1160                                 struct comedi_subdevice *subdevice,
1161                                 struct comedi_insn *insn, unsigned int *data)
1162 {
1163         unsigned int bits;
1164
1165         /*  Only set bits that have been masked */
1166         /*  data[0] = mask */
1167         /*  data[1] = bit state */
1168
1169         data[0] &= PCI9111_DO_MASK;
1170
1171         bits = subdevice->state;
1172         bits &= ~data[0];
1173         bits |= data[0] & data[1];
1174         subdevice->state = bits;
1175
1176         pci9111_do_set_bits(bits);
1177
1178         data[1] = bits;
1179
1180         return 2;
1181 }
1182
1183 /*  ------------------------------------------------------------------ */
1184 /*  INITIALISATION SECTION */
1185 /*  ------------------------------------------------------------------ */
1186
1187 /*  Reset device */
1188
1189 static int pci9111_reset(struct comedi_device *dev)
1190 {
1191         /*  Set trigger source to software */
1192
1193         plx9050_interrupt_control(dev_private->lcr_io_base, true, true, true,
1194                                   true, false);
1195
1196         pci9111_trigger_source_set(dev, software);
1197         pci9111_pretrigger_set(dev, false);
1198         pci9111_autoscan_set(dev, false);
1199
1200         /*  Reset 8254 chip */
1201
1202         dev_private->timer_divisor_1 = 0;
1203         dev_private->timer_divisor_2 = 0;
1204
1205         pci9111_timer_set(dev);
1206
1207         return 0;
1208 }
1209
1210 /*  Attach */
1211 /*       - Register PCI device */
1212 /*       - Declare device driver capability */
1213
1214 static int pci9111_attach(struct comedi_device *dev,
1215                           struct comedi_devconfig *it)
1216 {
1217         struct comedi_subdevice *subdevice;
1218         unsigned long io_base, io_range, lcr_io_base, lcr_io_range;
1219         struct pci_dev *pci_device;
1220         int error, i;
1221         const struct pci9111_board *board;
1222
1223         if (alloc_private(dev, sizeof(struct pci9111_private_data)) < 0)
1224                 return -ENOMEM;
1225         /*  Probe the device to determine what device in the series it is. */
1226
1227         printk("comedi%d: " PCI9111_DRIVER_NAME " driver\n", dev->minor);
1228
1229         for (pci_device = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
1230              pci_device != NULL;
1231              pci_device = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_device)) {
1232                 if (pci_device->vendor == PCI_VENDOR_ID_ADLINK) {
1233                         for (i = 0; i < pci9111_board_nbr; i++) {
1234                                 if (pci9111_boards[i].device_id ==
1235                                     pci_device->device) {
1236                                         /*  was a particular bus/slot requested? */
1237                                         if ((it->options[0] != 0)
1238                                             || (it->options[1] != 0)) {
1239                                                 /*  are we on the wrong bus/slot? */
1240                                                 if (pci_device->bus->number !=
1241                                                     it->options[0]
1242                                                     ||
1243                                                     PCI_SLOT(pci_device->devfn)
1244                                                     != it->options[1]) {
1245                                                         continue;
1246                                                 }
1247                                         }
1248
1249                                         dev->board_ptr = pci9111_boards + i;
1250                                         board =
1251                                             (struct pci9111_board *)
1252                                             dev->board_ptr;
1253                                         dev_private->pci_device = pci_device;
1254                                         goto found;
1255                                 }
1256                         }
1257                 }
1258         }
1259
1260         printk("comedi%d: no supported board found! (req. bus/slot : %d/%d)\n",
1261                dev->minor, it->options[0], it->options[1]);
1262         return -EIO;
1263
1264 found:
1265
1266         printk("comedi%d: found %s (b:s:f=%d:%d:%d) , irq=%d\n",
1267                dev->minor,
1268                pci9111_boards[i].name,
1269                pci_device->bus->number,
1270                PCI_SLOT(pci_device->devfn),
1271                PCI_FUNC(pci_device->devfn), pci_device->irq);
1272
1273         /*  TODO: Warn about non-tested boards. */
1274
1275         /*  Read local configuration register base address [PCI_BASE_ADDRESS #1]. */
1276
1277         lcr_io_base = pci_resource_start(pci_device, 1);
1278         lcr_io_range = pci_resource_len(pci_device, 1);
1279
1280         printk
1281             ("comedi%d: local configuration registers at address 0x%4lx [0x%4lx]\n",
1282              dev->minor, lcr_io_base, lcr_io_range);
1283
1284         /*  Enable PCI device and request regions */
1285         if (comedi_pci_enable(pci_device, PCI9111_DRIVER_NAME) < 0) {
1286                 printk
1287                     ("comedi%d: Failed to enable PCI device and request regions\n",
1288                      dev->minor);
1289                 return -EIO;
1290         }
1291         /*  Read PCI6308 register base address [PCI_BASE_ADDRESS #2]. */
1292
1293         io_base = pci_resource_start(pci_device, 2);
1294         io_range = pci_resource_len(pci_device, 2);
1295
1296         printk("comedi%d: 6503 registers at address 0x%4lx [0x%4lx]\n",
1297                dev->minor, io_base, io_range);
1298
1299         dev->iobase = io_base;
1300         dev->board_name = board->name;
1301         dev_private->io_range = io_range;
1302         dev_private->is_valid = 0;
1303         dev_private->lcr_io_base = lcr_io_base;
1304         dev_private->lcr_io_range = lcr_io_range;
1305
1306         pci9111_reset(dev);
1307
1308         /*  Irq setup */
1309
1310         dev->irq = 0;
1311         if (pci_device->irq > 0) {
1312                 if (request_irq(pci_device->irq, pci9111_interrupt,
1313                                 IRQF_SHARED, PCI9111_DRIVER_NAME, dev) != 0) {
1314                         printk("comedi%d: unable to allocate irq  %u\n",
1315                                dev->minor, pci_device->irq);
1316                         return -EINVAL;
1317                 }
1318         }
1319         dev->irq = pci_device->irq;
1320
1321         /*  TODO: Add external multiplexer setup (according to option[2]). */
1322
1323         error = alloc_subdevices(dev, 4);
1324         if (error < 0)
1325                 return error;
1326
1327         subdevice = dev->subdevices + 0;
1328         dev->read_subdev = subdevice;
1329
1330         subdevice->type = COMEDI_SUBD_AI;
1331         subdevice->subdev_flags = SDF_READABLE | SDF_COMMON | SDF_CMD_READ;
1332
1333         /*  TODO: Add external multiplexer data */
1334         /*     if (devpriv->usemux) { subdevice->n_chan = devpriv->usemux; } */
1335         /*     else { subdevice->n_chan = this_board->n_aichan; } */
1336
1337         subdevice->n_chan = board->ai_channel_nbr;
1338         subdevice->maxdata = board->ai_resolution_mask;
1339         subdevice->len_chanlist = board->ai_channel_nbr;
1340         subdevice->range_table = board->ai_range_list;
1341         subdevice->cancel = pci9111_ai_cancel;
1342         subdevice->insn_read = pci9111_ai_insn_read;
1343         subdevice->do_cmdtest = pci9111_ai_do_cmd_test;
1344         subdevice->do_cmd = pci9111_ai_do_cmd;
1345         subdevice->munge = pci9111_ai_munge;
1346
1347         subdevice = dev->subdevices + 1;
1348         subdevice->type = COMEDI_SUBD_AO;
1349         subdevice->subdev_flags = SDF_WRITABLE | SDF_COMMON;
1350         subdevice->n_chan = board->ao_channel_nbr;
1351         subdevice->maxdata = board->ao_resolution_mask;
1352         subdevice->len_chanlist = board->ao_channel_nbr;
1353         subdevice->range_table = board->ao_range_list;
1354         subdevice->insn_write = pci9111_ao_insn_write;
1355         subdevice->insn_read = pci9111_ao_insn_read;
1356
1357         subdevice = dev->subdevices + 2;
1358         subdevice->type = COMEDI_SUBD_DI;
1359         subdevice->subdev_flags = SDF_READABLE;
1360         subdevice->n_chan = PCI9111_DI_CHANNEL_NBR;
1361         subdevice->maxdata = 1;
1362         subdevice->range_table = &range_digital;
1363         subdevice->insn_bits = pci9111_di_insn_bits;
1364
1365         subdevice = dev->subdevices + 3;
1366         subdevice->type = COMEDI_SUBD_DO;
1367         subdevice->subdev_flags = SDF_READABLE | SDF_WRITABLE;
1368         subdevice->n_chan = PCI9111_DO_CHANNEL_NBR;
1369         subdevice->maxdata = 1;
1370         subdevice->range_table = &range_digital;
1371         subdevice->insn_bits = pci9111_do_insn_bits;
1372
1373         dev_private->is_valid = 1;
1374
1375         return 0;
1376 }
1377
1378 /*  Detach */
1379
1380 static int pci9111_detach(struct comedi_device *dev)
1381 {
1382         /*  Reset device */
1383
1384         if (dev->private != NULL) {
1385                 if (dev_private->is_valid)
1386                         pci9111_reset(dev);
1387
1388         }
1389         /*  Release previously allocated irq */
1390
1391         if (dev->irq != 0)
1392                 free_irq(dev->irq, dev);
1393
1394         if (dev_private != NULL && dev_private->pci_device != NULL) {
1395                 if (dev->iobase)
1396                         comedi_pci_disable(dev_private->pci_device);
1397                 pci_dev_put(dev_private->pci_device);
1398         }
1399
1400         return 0;
1401 }