drivers/staging/comedi/drivers/ni_65xx.c

   1 /*
   2     comedi/drivers/ni_6514.c
   3     driver for National Instruments PCI-6514
   4
   5     Copyright (C) 2006 Jon Grierson <jd@renko.co.uk>
   6     Copyright (C) 2006 Frank Mori Hess <fmhess@users.sourceforge.net>
   7
   8     COMEDI - Linux Control and Measurement Device Interface
   9     Copyright (C) 1999,2002,2003 David A. Schleef <ds@schleef.org>
  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: ni_65xx
  28 Description: National Instruments 65xx static dio boards
  29 Author: Jon Grierson <jd@renko.co.uk>,
  30         Frank Mori Hess <fmhess@users.sourceforge.net>
  31 Status: testing
  32 Devices: [National Instruments] PCI-6509 (ni_65xx), PXI-6509, PCI-6510,
  33   PCI-6511, PXI-6511, PCI-6512, PXI-6512, PCI-6513, PXI-6513, PCI-6514,
  34   PXI-6514, PCI-6515, PXI-6515, PCI-6516, PCI-6517, PCI-6518, PCI-6519,
  35   PCI-6520, PCI-6521, PXI-6521, PCI-6528, PXI-6528
  36 Updated: Wed Oct 18 08:59:11 EDT 2006
  37
  38 Based on the PCI-6527 driver by ds.
  39 The interrupt subdevice (subdevice 3) is probably broken for all boards
  40 except maybe the 6514.
  41
  42 */
  43
  44 /*
  45    Manuals (available from ftp://ftp.natinst.com/support/manuals)
  46
  47         370106b.pdf     6514 Register Level Programmer Manual
  48
  49  */
  50
  51 #define _GNU_SOURCE
  52 #define DEBUG 1
  53 #define DEBUG_FLAGS
  54 #include <linux/interrupt.h>
  55 #include <linux/slab.h>
  56 #include "../comedidev.h"
  57
  58 #include "mite.h"
  59
  60 #define NI6514_DIO_SIZE 4096
  61 #define NI6514_MITE_SIZE 4096
  62
  63 #define NI_65XX_MAX_NUM_PORTS 12
  64 static const unsigned ni_65xx_channels_per_port = 8;
  65 static const unsigned ni_65xx_port_offset = 0x10;
  66
  67 static inline unsigned Port_Data(unsigned port)
  68 {
  69         return 0x40 + port * ni_65xx_port_offset;
  70 }
  71
  72 static inline unsigned Port_Select(unsigned port)
  73 {
  74         return 0x41 + port * ni_65xx_port_offset;
  75 }
  76
  77 static inline unsigned Rising_Edge_Detection_Enable(unsigned port)
  78 {
  79         return 0x42 + port * ni_65xx_port_offset;
  80 }
  81
  82 static inline unsigned Falling_Edge_Detection_Enable(unsigned port)
  83 {
  84         return 0x43 + port * ni_65xx_port_offset;
  85 }
  86
  87 static inline unsigned Filter_Enable(unsigned port)
  88 {
  89         return 0x44 + port * ni_65xx_port_offset;
  90 }
  91
  92 #define ID_Register                             0x00
  93
  94 #define Clear_Register                          0x01
  95 #define ClrEdge                         0x08
  96 #define ClrOverflow                     0x04
  97
  98 #define Filter_Interval                 0x08
  99
 100 #define Change_Status                           0x02
 101 #define MasterInterruptStatus           0x04
 102 #define Overflow                        0x02
 103 #define EdgeStatus                      0x01
 104
 105 #define Master_Interrupt_Control                0x03
 106 #define FallingEdgeIntEnable            0x10
 107 #define RisingEdgeIntEnable             0x08
 108 #define MasterInterruptEnable           0x04
 109 #define OverflowIntEnable               0x02
 110 #define EdgeIntEnable                   0x01
 111
 112 static int ni_65xx_attach(struct comedi_device *dev,
 113                           struct comedi_devconfig *it);
 114 static void ni_65xx_detach(struct comedi_device *dev);
 115 static struct comedi_driver driver_ni_65xx = {
 116         .driver_name = "ni_65xx",
 117         .module = THIS_MODULE,
 118         .attach = ni_65xx_attach,
 119         .detach = ni_65xx_detach,
 120 };
 121
 122 struct ni_65xx_board {
 123
 124         int dev_id;
 125         const char *name;
 126         unsigned num_dio_ports;
 127         unsigned num_di_ports;
 128         unsigned num_do_ports;
 129         unsigned invert_outputs:1;
 130 };
 131
 132 static const struct ni_65xx_board ni_65xx_boards[] = {
 133         {
 134          .dev_id = 0x7085,
 135          .name = "pci-6509",
 136          .num_dio_ports = 12,
 137          .invert_outputs = 0},
 138         {
 139          .dev_id = 0x1710,
 140          .name = "pxi-6509",
 141          .num_dio_ports = 12,
 142          .invert_outputs = 0},
 143         {
 144          .dev_id = 0x7124,
 145          .name = "pci-6510",
 146          .num_di_ports = 4},
 147         {
 148          .dev_id = 0x70c3,
 149          .name = "pci-6511",
 150          .num_di_ports = 8},
 151         {
 152          .dev_id = 0x70d3,
 153          .name = "pxi-6511",
 154          .num_di_ports = 8},
 155         {
 156          .dev_id = 0x70cc,
 157          .name = "pci-6512",
 158          .num_do_ports = 8},
 159         {
 160          .dev_id = 0x70d2,
 161          .name = "pxi-6512",
 162          .num_do_ports = 8},
 163         {
 164          .dev_id = 0x70c8,
 165          .name = "pci-6513",
 166          .num_do_ports = 8,
 167          .invert_outputs = 1},
 168         {
 169          .dev_id = 0x70d1,
 170          .name = "pxi-6513",
 171          .num_do_ports = 8,
 172          .invert_outputs = 1},
 173         {
 174          .dev_id = 0x7088,
 175          .name = "pci-6514",
 176          .num_di_ports = 4,
 177          .num_do_ports = 4,
 178          .invert_outputs = 1},
 179         {
 180          .dev_id = 0x70CD,
 181          .name = "pxi-6514",
 182          .num_di_ports = 4,
 183          .num_do_ports = 4,
 184          .invert_outputs = 1},
 185         {
 186          .dev_id = 0x7087,
 187          .name = "pci-6515",
 188          .num_di_ports = 4,
 189          .num_do_ports = 4,
 190          .invert_outputs = 1},
 191         {
 192          .dev_id = 0x70c9,
 193          .name = "pxi-6515",
 194          .num_di_ports = 4,
 195          .num_do_ports = 4,
 196          .invert_outputs = 1},
 197         {
 198          .dev_id = 0x7125,
 199          .name = "pci-6516",
 200          .num_do_ports = 4,
 201          .invert_outputs = 1},
 202         {
 203          .dev_id = 0x7126,
 204          .name = "pci-6517",
 205          .num_do_ports = 4,
 206          .invert_outputs = 1},
 207         {
 208          .dev_id = 0x7127,
 209          .name = "pci-6518",
 210          .num_di_ports = 2,
 211          .num_do_ports = 2,
 212          .invert_outputs = 1},
 213         {
 214          .dev_id = 0x7128,
 215          .name = "pci-6519",
 216          .num_di_ports = 2,
 217          .num_do_ports = 2,
 218          .invert_outputs = 1},
 219         {
 220          .dev_id = 0x71c5,
 221          .name = "pci-6520",
 222          .num_di_ports = 1,
 223          .num_do_ports = 1,
 224          },
 225         {
 226          .dev_id = 0x718b,
 227          .name = "pci-6521",
 228          .num_di_ports = 1,
 229          .num_do_ports = 1,
 230          },
 231         {
 232          .dev_id = 0x718c,
 233          .name = "pxi-6521",
 234          .num_di_ports = 1,
 235          .num_do_ports = 1,
 236          },
 237         {
 238          .dev_id = 0x70a9,
 239          .name = "pci-6528",
 240          .num_di_ports = 3,
 241          .num_do_ports = 3,
 242          },
 243         {
 244          .dev_id = 0x7086,
 245          .name = "pxi-6528",
 246          .num_di_ports = 3,
 247          .num_do_ports = 3,
 248          },
 249 };
 250
 251 #define n_ni_65xx_boards ARRAY_SIZE(ni_65xx_boards)
 252 static inline const struct ni_65xx_board *board(struct comedi_device *dev)
 253 {
 254         return dev->board_ptr;
 255 }
 256
 257 static inline unsigned ni_65xx_port_by_channel(unsigned channel)
 258 {
 259         return channel / ni_65xx_channels_per_port;
 260 }
 261
 262 static inline unsigned ni_65xx_total_num_ports(const struct ni_65xx_board
 263                                                *board)
 264 {
 265         return board->num_dio_ports + board->num_di_ports + board->num_do_ports;
 266 }
 267
 268 static DEFINE_PCI_DEVICE_TABLE(ni_65xx_pci_table) = {
 269         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x1710)},
 270         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x7085)},
 271         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x7086)},
 272         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x7087)},
 273         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x7088)},
 274         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x70a9)},
 275         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x70c3)},
 276         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x70c8)},
 277         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x70c9)},
 278         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x70cc)},
 279         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x70CD)},
 280         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x70d1)},
 281         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x70d2)},
 282         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x70d3)},
 283         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x7124)},
 284         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x7125)},
 285         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x7126)},
 286         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x7127)},
 287         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x7128)},
 288         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x718b)},
 289         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x718c)},
 290         {PCI_DEVICE(PCI_VENDOR_ID_NI, 0x71c5)},
 291         {0}
 292 };
 293
 294 MODULE_DEVICE_TABLE(pci, ni_65xx_pci_table);
 295
 296 struct ni_65xx_private {
 297         struct mite_struct *mite;
 298         unsigned int filter_interval;
 299         unsigned short filter_enable[NI_65XX_MAX_NUM_PORTS];
 300         unsigned short output_bits[NI_65XX_MAX_NUM_PORTS];
 301         unsigned short dio_direction[NI_65XX_MAX_NUM_PORTS];
 302 };
 303
 304 static inline struct ni_65xx_private *private(struct comedi_device *dev)
 305 {
 306         return dev->private;
 307 }
 308
 309 struct ni_65xx_subdevice_private {
 310         unsigned base_port;
 311 };
 312
 313 static inline struct ni_65xx_subdevice_private *sprivate(struct comedi_subdevice
 314                                                          *subdev)
 315 {
 316         return subdev->private;
 317 }
 318
 319 static struct ni_65xx_subdevice_private *ni_65xx_alloc_subdevice_private(void)
 320 {
 321         struct ni_65xx_subdevice_private *subdev_private =
 322             kzalloc(sizeof(struct ni_65xx_subdevice_private), GFP_KERNEL);
 323         if (subdev_private == NULL)
 324                 return NULL;
 325         return subdev_private;
 326 }
 327
 328 static int ni_65xx_find_device(struct comedi_device *dev, int bus, int slot);
 329
 330 static int ni_65xx_config_filter(struct comedi_device *dev,
 331                                  struct comedi_subdevice *s,
 332                                  struct comedi_insn *insn, unsigned int *data)
 333 {
 334         const unsigned chan = CR_CHAN(insn->chanspec);
 335         const unsigned port =
 336             sprivate(s)->base_port + ni_65xx_port_by_channel(chan);
 337
 338         if (data[0] != INSN_CONFIG_FILTER)
 339                 return -EINVAL;
 340         if (data[1]) {
 341                 static const unsigned filter_resolution_ns = 200;
 342                 static const unsigned max_filter_interval = 0xfffff;
 343                 unsigned interval =
 344                     (data[1] +
 345                      (filter_resolution_ns / 2)) / filter_resolution_ns;
 346                 if (interval > max_filter_interval)
 347                         interval = max_filter_interval;
 348                 data[1] = interval * filter_resolution_ns;
 349
 350                 if (interval != private(dev)->filter_interval) {
 351                         writeb(interval,
 352                                private(dev)->mite->daq_io_addr +
 353                                Filter_Interval);
 354                         private(dev)->filter_interval = interval;
 355                 }
 356
 357                 private(dev)->filter_enable[port] |=
 358                     1 << (chan % ni_65xx_channels_per_port);
 359         } else {
 360                 private(dev)->filter_enable[port] &=
 361                     ~(1 << (chan % ni_65xx_channels_per_port));
 362         }
 363
 364         writeb(private(dev)->filter_enable[port],
 365                private(dev)->mite->daq_io_addr + Filter_Enable(port));
 366
 367         return 2;
 368 }
 369
 370 static int ni_65xx_dio_insn_config(struct comedi_device *dev,
 371                                    struct comedi_subdevice *s,
 372                                    struct comedi_insn *insn, unsigned int *data)
 373 {
 374         unsigned port;
 375
 376         if (insn->n < 1)
 377                 return -EINVAL;
 378         port = sprivate(s)->base_port +
 379             ni_65xx_port_by_channel(CR_CHAN(insn->chanspec));
 380         switch (data[0]) {
 381         case INSN_CONFIG_FILTER:
 382                 return ni_65xx_config_filter(dev, s, insn, data);
 383                 break;
 384         case INSN_CONFIG_DIO_OUTPUT:
 385                 if (s->type != COMEDI_SUBD_DIO)
 386                         return -EINVAL;
 387                 private(dev)->dio_direction[port] = COMEDI_OUTPUT;
 388                 writeb(0, private(dev)->mite->daq_io_addr + Port_Select(port));
 389                 return 1;
 390                 break;
 391         case INSN_CONFIG_DIO_INPUT:
 392                 if (s->type != COMEDI_SUBD_DIO)
 393                         return -EINVAL;
 394                 private(dev)->dio_direction[port] = COMEDI_INPUT;
 395                 writeb(1, private(dev)->mite->daq_io_addr + Port_Select(port));
 396                 return 1;
 397                 break;
 398         case INSN_CONFIG_DIO_QUERY:
 399                 if (s->type != COMEDI_SUBD_DIO)
 400                         return -EINVAL;
 401                 data[1] = private(dev)->dio_direction[port];
 402                 return insn->n;
 403                 break;
 404         default:
 405                 break;
 406         }
 407         return -EINVAL;
 408 }
 409
 410 static int ni_65xx_dio_insn_bits(struct comedi_device *dev,
 411                                  struct comedi_subdevice *s,
 412                                  struct comedi_insn *insn, unsigned int *data)
 413 {
 414         unsigned base_bitfield_channel;
 415         const unsigned max_ports_per_bitfield = 5;
 416         unsigned read_bits = 0;
 417         unsigned j;
 418
 419         base_bitfield_channel = CR_CHAN(insn->chanspec);
 420         for (j = 0; j < max_ports_per_bitfield; ++j) {
 421                 const unsigned port_offset =
 422                         ni_65xx_port_by_channel(base_bitfield_channel) + j;
 423                 const unsigned port =
 424                         sprivate(s)->base_port + port_offset;
 425                 unsigned base_port_channel;
 426                 unsigned port_mask, port_data, port_read_bits;
 427                 int bitshift;
 428                 if (port >= ni_65xx_total_num_ports(board(dev)))
 429                         break;
 430                 base_port_channel = port_offset * ni_65xx_channels_per_port;
 431                 port_mask = data[0];
 432                 port_data = data[1];
 433                 bitshift = base_port_channel - base_bitfield_channel;
 434                 if (bitshift >= 32 || bitshift <= -32)
 435                         break;
 436                 if (bitshift > 0) {
 437                         port_mask >>= bitshift;
 438                         port_data >>= bitshift;
 439                 } else {
 440                         port_mask <<= -bitshift;
 441                         port_data <<= -bitshift;
 442                 }
 443                 port_mask &= 0xff;
 444                 port_data &= 0xff;
 445                 if (port_mask) {
 446                         unsigned bits;
 447                         private(dev)->output_bits[port] &= ~port_mask;
 448                         private(dev)->output_bits[port] |=
 449                             port_data & port_mask;
 450                         bits = private(dev)->output_bits[port];
 451                         if (board(dev)->invert_outputs)
 452                                 bits = ~bits;
 453                         writeb(bits,
 454                                private(dev)->mite->daq_io_addr +
 455                                Port_Data(port));
 456 /* printk("wrote 0x%x to port %i\n", bits, port); */
 457                 }
 458                 port_read_bits =
 459                     readb(private(dev)->mite->daq_io_addr + Port_Data(port));
 460 /* printk("read 0x%x from port %i\n", port_read_bits, port); */
 461                 if (s->type == COMEDI_SUBD_DO && board(dev)->invert_outputs) {
 462                         /* Outputs inverted, so invert value read back from
 463                          * DO subdevice.  (Does not apply to boards with DIO
 464                          * subdevice.) */
 465                         port_read_bits ^= 0xFF;
 466                 }
 467                 if (bitshift > 0)
 468                         port_read_bits <<= bitshift;
 469                 else
 470                         port_read_bits >>= -bitshift;
 471
 472                 read_bits |= port_read_bits;
 473         }
 474         data[1] = read_bits;
 475         return insn->n;
 476 }
 477
 478 static irqreturn_t ni_65xx_interrupt(int irq, void *d)
 479 {
 480         struct comedi_device *dev = d;
 481         struct comedi_subdevice *s = &dev->subdevices[2];
 482         unsigned int status;
 483
 484         status = readb(private(dev)->mite->daq_io_addr + Change_Status);
 485         if ((status & MasterInterruptStatus) == 0)
 486                 return IRQ_NONE;
 487         if ((status & EdgeStatus) == 0)
 488                 return IRQ_NONE;
 489
 490         writeb(ClrEdge | ClrOverflow,
 491                private(dev)->mite->daq_io_addr + Clear_Register);
 492
 493         comedi_buf_put(s->async, 0);
 494         s->async->events |= COMEDI_CB_EOS;
 495         comedi_event(dev, s);
 496         return IRQ_HANDLED;
 497 }
 498
 499 static int ni_65xx_intr_cmdtest(struct comedi_device *dev,
 500                                 struct comedi_subdevice *s,
 501                                 struct comedi_cmd *cmd)
 502 {
 503         int err = 0;
 504         int tmp;
 505
 506         /* step 1: make sure trigger sources are trivially valid */
 507
 508         tmp = cmd->start_src;
 509         cmd->start_src &= TRIG_NOW;
 510         if (!cmd->start_src || tmp != cmd->start_src)
 511                 err++;
 512
 513         tmp = cmd->scan_begin_src;
 514         cmd->scan_begin_src &= TRIG_OTHER;
 515         if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
 516                 err++;
 517
 518         tmp = cmd->convert_src;
 519         cmd->convert_src &= TRIG_FOLLOW;
 520         if (!cmd->convert_src || tmp != cmd->convert_src)
 521                 err++;
 522
 523         tmp = cmd->scan_end_src;
 524         cmd->scan_end_src &= TRIG_COUNT;
 525         if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
 526                 err++;
 527
 528         tmp = cmd->stop_src;
 529         cmd->stop_src &= TRIG_COUNT;
 530         if (!cmd->stop_src || tmp != cmd->stop_src)
 531                 err++;
 532
 533         if (err)
 534                 return 1;
 535
 536         /* step 2: make sure trigger sources are unique and mutually
 537         compatible */
 538
 539         if (err)
 540                 return 2;
 541
 542         /* step 3: make sure arguments are trivially compatible */
 543
 544         if (cmd->start_arg != 0) {
 545                 cmd->start_arg = 0;
 546                 err++;
 547         }
 548         if (cmd->scan_begin_arg != 0) {
 549                 cmd->scan_begin_arg = 0;
 550                 err++;
 551         }
 552         if (cmd->convert_arg != 0) {
 553                 cmd->convert_arg = 0;
 554                 err++;
 555         }
 556
 557         if (cmd->scan_end_arg != 1) {
 558                 cmd->scan_end_arg = 1;
 559                 err++;
 560         }
 561         if (cmd->stop_arg != 0) {
 562                 cmd->stop_arg = 0;
 563                 err++;
 564         }
 565
 566         if (err)
 567                 return 3;
 568
 569         /* step 4: fix up any arguments */
 570
 571         if (err)
 572                 return 4;
 573
 574         return 0;
 575 }
 576
 577 static int ni_65xx_intr_cmd(struct comedi_device *dev,
 578                             struct comedi_subdevice *s)
 579 {
 580         /* struct comedi_cmd *cmd = &s->async->cmd; */
 581
 582         writeb(ClrEdge | ClrOverflow,
 583                private(dev)->mite->daq_io_addr + Clear_Register);
 584         writeb(FallingEdgeIntEnable | RisingEdgeIntEnable |
 585                MasterInterruptEnable | EdgeIntEnable,
 586                private(dev)->mite->daq_io_addr + Master_Interrupt_Control);
 587
 588         return 0;
 589 }
 590
 591 static int ni_65xx_intr_cancel(struct comedi_device *dev,
 592                                struct comedi_subdevice *s)
 593 {
 594         writeb(0x00,
 595                private(dev)->mite->daq_io_addr + Master_Interrupt_Control);
 596
 597         return 0;
 598 }
 599
 600 static int ni_65xx_intr_insn_bits(struct comedi_device *dev,
 601                                   struct comedi_subdevice *s,
 602                                   struct comedi_insn *insn, unsigned int *data)
 603 {
 604         data[1] = 0;
 605         return insn->n;
 606 }
 607
 608 static int ni_65xx_intr_insn_config(struct comedi_device *dev,
 609                                     struct comedi_subdevice *s,
 610                                     struct comedi_insn *insn,
 611                                     unsigned int *data)
 612 {
 613         if (insn->n < 1)
 614                 return -EINVAL;
 615         if (data[0] != INSN_CONFIG_CHANGE_NOTIFY)
 616                 return -EINVAL;
 617
 618         writeb(data[1],
 619                private(dev)->mite->daq_io_addr +
 620                Rising_Edge_Detection_Enable(0));
 621         writeb(data[1] >> 8,
 622                private(dev)->mite->daq_io_addr +
 623                Rising_Edge_Detection_Enable(0x10));
 624         writeb(data[1] >> 16,
 625                private(dev)->mite->daq_io_addr +
 626                Rising_Edge_Detection_Enable(0x20));
 627         writeb(data[1] >> 24,
 628                private(dev)->mite->daq_io_addr +
 629                Rising_Edge_Detection_Enable(0x30));
 630
 631         writeb(data[2],
 632                private(dev)->mite->daq_io_addr +
 633                Falling_Edge_Detection_Enable(0));
 634         writeb(data[2] >> 8,
 635                private(dev)->mite->daq_io_addr +
 636                Falling_Edge_Detection_Enable(0x10));
 637         writeb(data[2] >> 16,
 638                private(dev)->mite->daq_io_addr +
 639                Falling_Edge_Detection_Enable(0x20));
 640         writeb(data[2] >> 24,
 641                private(dev)->mite->daq_io_addr +
 642                Falling_Edge_Detection_Enable(0x30));
 643
 644         return 2;
 645 }
 646
 647 static int ni_65xx_attach(struct comedi_device *dev,
 648                           struct comedi_devconfig *it)
 649 {
 650         struct comedi_subdevice *s;
 651         unsigned i;
 652         int ret;
 653
 654         printk(KERN_INFO "comedi%d: ni_65xx:", dev->minor);
 655
 656         ret = alloc_private(dev, sizeof(struct ni_65xx_private));
 657         if (ret < 0)
 658                 return ret;
 659
 660         ret = ni_65xx_find_device(dev, it->options[0], it->options[1]);
 661         if (ret < 0)
 662                 return ret;
 663
 664         ret = mite_setup(private(dev)->mite);
 665         if (ret < 0) {
 666                 printk(KERN_WARNING "error setting up mite\n");
 667                 return ret;
 668         }
 669
 670         dev->board_name = board(dev)->name;
 671         dev->irq = mite_irq(private(dev)->mite);
 672         printk(KERN_INFO " %s", dev->board_name);
 673
 674         printk(KERN_INFO " ID=0x%02x",
 675                readb(private(dev)->mite->daq_io_addr + ID_Register));
 676
 677         ret = comedi_alloc_subdevices(dev, 4);
 678         if (ret)
 679                 return ret;
 680
 681         s = &dev->subdevices[0];
 682         if (board(dev)->num_di_ports) {
 683                 s->type = COMEDI_SUBD_DI;
 684                 s->subdev_flags = SDF_READABLE;
 685                 s->n_chan =
 686                     board(dev)->num_di_ports * ni_65xx_channels_per_port;
 687                 s->range_table = &range_digital;
 688                 s->maxdata = 1;
 689                 s->insn_config = ni_65xx_dio_insn_config;
 690                 s->insn_bits = ni_65xx_dio_insn_bits;
 691                 s->private = ni_65xx_alloc_subdevice_private();
 692                 if (s->private == NULL)
 693                         return -ENOMEM;
 694                 sprivate(s)->base_port = 0;
 695         } else {
 696                 s->type = COMEDI_SUBD_UNUSED;
 697         }
 698
 699         s = &dev->subdevices[1];
 700         if (board(dev)->num_do_ports) {
 701                 s->type = COMEDI_SUBD_DO;
 702                 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 703                 s->n_chan =
 704                     board(dev)->num_do_ports * ni_65xx_channels_per_port;
 705                 s->range_table = &range_digital;
 706                 s->maxdata = 1;
 707                 s->insn_bits = ni_65xx_dio_insn_bits;
 708                 s->private = ni_65xx_alloc_subdevice_private();
 709                 if (s->private == NULL)
 710                         return -ENOMEM;
 711                 sprivate(s)->base_port = board(dev)->num_di_ports;
 712         } else {
 713                 s->type = COMEDI_SUBD_UNUSED;
 714         }
 715
 716         s = &dev->subdevices[2];
 717         if (board(dev)->num_dio_ports) {
 718                 s->type = COMEDI_SUBD_DIO;
 719                 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 720                 s->n_chan =
 721                     board(dev)->num_dio_ports * ni_65xx_channels_per_port;
 722                 s->range_table = &range_digital;
 723                 s->maxdata = 1;
 724                 s->insn_config = ni_65xx_dio_insn_config;
 725                 s->insn_bits = ni_65xx_dio_insn_bits;
 726                 s->private = ni_65xx_alloc_subdevice_private();
 727                 if (s->private == NULL)
 728                         return -ENOMEM;
 729                 sprivate(s)->base_port = 0;
 730                 for (i = 0; i < board(dev)->num_dio_ports; ++i) {
 731                         /*  configure all ports for input */
 732                         writeb(0x1,
 733                                private(dev)->mite->daq_io_addr +
 734                                Port_Select(i));
 735                 }
 736         } else {
 737                 s->type = COMEDI_SUBD_UNUSED;
 738         }
 739
 740         s = &dev->subdevices[3];
 741         dev->read_subdev = s;
 742         s->type = COMEDI_SUBD_DI;
 743         s->subdev_flags = SDF_READABLE | SDF_CMD_READ;
 744         s->n_chan = 1;
 745         s->range_table = &range_unknown;
 746         s->maxdata = 1;
 747         s->do_cmdtest = ni_65xx_intr_cmdtest;
 748         s->do_cmd = ni_65xx_intr_cmd;
 749         s->cancel = ni_65xx_intr_cancel;
 750         s->insn_bits = ni_65xx_intr_insn_bits;
 751         s->insn_config = ni_65xx_intr_insn_config;
 752
 753         for (i = 0; i < ni_65xx_total_num_ports(board(dev)); ++i) {
 754                 writeb(0x00,
 755                        private(dev)->mite->daq_io_addr + Filter_Enable(i));
 756                 if (board(dev)->invert_outputs)
 757                         writeb(0x01,
 758                                private(dev)->mite->daq_io_addr + Port_Data(i));
 759                 else
 760                         writeb(0x00,
 761                                private(dev)->mite->daq_io_addr + Port_Data(i));
 762         }
 763         writeb(ClrEdge | ClrOverflow,
 764                private(dev)->mite->daq_io_addr + Clear_Register);
 765         writeb(0x00,
 766                private(dev)->mite->daq_io_addr + Master_Interrupt_Control);
 767
 768         /* Set filter interval to 0  (32bit reg) */
 769         writeb(0x00000000, private(dev)->mite->daq_io_addr + Filter_Interval);
 770
 771         ret = request_irq(dev->irq, ni_65xx_interrupt, IRQF_SHARED,
 772                           "ni_65xx", dev);
 773         if (ret < 0) {
 774                 dev->irq = 0;
 775                 printk(KERN_WARNING " irq not available");
 776         }
 777
 778         printk("\n");
 779
 780         return 0;
 781 }
 782
 783 static void ni_65xx_detach(struct comedi_device *dev)
 784 {
 785         if (private(dev) && private(dev)->mite
 786             && private(dev)->mite->daq_io_addr) {
 787                 writeb(0x00,
 788                        private(dev)->mite->daq_io_addr +
 789                        Master_Interrupt_Control);
 790         }
 791         if (dev->irq)
 792                 free_irq(dev->irq, dev);
 793         if (private(dev)) {
 794                 struct comedi_subdevice *s;
 795                 unsigned i;
 796
 797                 for (i = 0; i < dev->n_subdevices; ++i) {
 798                         s = &dev->subdevices[i];
 799                         kfree(s->private);
 800                         s->private = NULL;
 801                 }
 802                 if (private(dev)->mite)
 803                         mite_unsetup(private(dev)->mite);
 804         }
 805 }
 806
 807 static int ni_65xx_find_device(struct comedi_device *dev, int bus, int slot)
 808 {
 809         struct mite_struct *mite;
 810         int i;
 811
 812         for (mite = mite_devices; mite; mite = mite->next) {
 813                 if (mite->used)
 814                         continue;
 815                 if (bus || slot) {
 816                         if (bus != mite->pcidev->bus->number ||
 817                             slot != PCI_SLOT(mite->pcidev->devfn))
 818                                 continue;
 819                 }
 820                 for (i = 0; i < n_ni_65xx_boards; i++) {
 821                         if (mite_device_id(mite) == ni_65xx_boards[i].dev_id) {
 822                                 dev->board_ptr = ni_65xx_boards + i;
 823                                 private(dev)->mite = mite;
 824                                 return 0;
 825                         }
 826                 }
 827         }
 828         printk(KERN_WARNING "no device found\n");
 829         mite_list_devices();
 830         return -EIO;
 831 }
 832
 833 static int __devinit driver_ni_65xx_pci_probe(struct pci_dev *dev,
 834                                               const struct pci_device_id *ent)
 835 {
 836         return comedi_pci_auto_config(dev, &driver_ni_65xx);
 837 }
 838
 839 static void __devexit driver_ni_65xx_pci_remove(struct pci_dev *dev)
 840 {
 841         comedi_pci_auto_unconfig(dev);
 842 }
 843
 844 static struct pci_driver driver_ni_65xx_pci_driver = {
 845         .id_table = ni_65xx_pci_table,
 846         .probe = &driver_ni_65xx_pci_probe,
 847         .remove = __devexit_p(&driver_ni_65xx_pci_remove)
 848 };
 849
 850 static int __init driver_ni_65xx_init_module(void)
 851 {
 852         int retval;
 853
 854         retval = comedi_driver_register(&driver_ni_65xx);
 855         if (retval < 0)
 856                 return retval;
 857
 858         driver_ni_65xx_pci_driver.name = (char *)driver_ni_65xx.driver_name;
 859         return pci_register_driver(&driver_ni_65xx_pci_driver);
 860 }
 861
 862 static void __exit driver_ni_65xx_cleanup_module(void)
 863 {
 864         pci_unregister_driver(&driver_ni_65xx_pci_driver);
 865         comedi_driver_unregister(&driver_ni_65xx);
 866 }
 867
 868 module_init(driver_ni_65xx_init_module);
 869 module_exit(driver_ni_65xx_cleanup_module);
 870
 871 MODULE_AUTHOR("Comedi http://www.comedi.org");
 872 MODULE_DESCRIPTION("Comedi low-level driver");
 873 MODULE_LICENSE("GPL");