drivers/staging/comedi/drivers/ni_670x.c

   1 /*
   2     comedi/drivers/ni_670x.c
   3     Hardware driver for NI 670x devices
   4
   5     COMEDI - Linux Control and Measurement Device Interface
   6     Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
   7
   8     This program is free software; you can redistribute it and/or modify
   9     it under the terms of the GNU General Public License as published by
  10     the Free Software Foundation; either version 2 of the License, or
  11     (at your option) any later version.
  12
  13     This program is distributed in the hope that it will be useful,
  14     but WITHOUT ANY WARRANTY; without even the implied warranty of
  15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16     GNU General Public License for more details.
  17
  18     You should have received a copy of the GNU General Public License
  19     along with this program; if not, write to the Free Software
  20     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22 */
  23 /*
  24 Driver: ni_670x
  25 Description: National Instruments 670x
  26 Author: Bart Joris <bjoris@advalvas.be>
  27 Updated: Wed, 11 Dec 2002 18:25:35 -0800
  28 Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
  29 Status: unknown
  30
  31 Commands are not supported.
  32 */
  33
  34 /*
  35         Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001
  36
  37         Manuals:
  38
  39         322110a.pdf     PCI/PXI-6704 User Manual
  40         322110b.pdf     PCI/PXI-6703/6704 User Manual
  41
  42 */
  43
  44 #include <linux/interrupt.h>
  45 #include <linux/slab.h>
  46 #include "../comedidev.h"
  47
  48 #include "mite.h"
  49
  50 #define PCI_VENDOR_ID_NATINST   0x1093
  51
  52 #define AO_VALUE_OFFSET                 0x00
  53 #define AO_CHAN_OFFSET                  0x0c
  54 #define AO_STATUS_OFFSET                0x10
  55 #define AO_CONTROL_OFFSET               0x10
  56 #define DIO_PORT0_DIR_OFFSET    0x20
  57 #define DIO_PORT0_DATA_OFFSET   0x24
  58 #define DIO_PORT1_DIR_OFFSET    0x28
  59 #define DIO_PORT1_DATA_OFFSET   0x2c
  60 #define MISC_STATUS_OFFSET              0x14
  61 #define MISC_CONTROL_OFFSET             0x14
  62
  63 /* Board description*/
  64
  65 struct ni_670x_board {
  66         unsigned short dev_id;
  67         const char *name;
  68         unsigned short ao_chans;
  69         unsigned short ao_bits;
  70 };
  71
  72 static const struct ni_670x_board ni_670x_boards[] = {
  73         {
  74          .dev_id = 0x2c90,
  75          .name = "PCI-6703",
  76          .ao_chans = 16,
  77          .ao_bits = 16,
  78          },
  79         {
  80          .dev_id = 0x1920,
  81          .name = "PXI-6704",
  82          .ao_chans = 32,
  83          .ao_bits = 16,
  84          },
  85         {
  86          .dev_id = 0x1290,
  87          .name = "PCI-6704",
  88          .ao_chans = 32,
  89          .ao_bits = 16,
  90          },
  91 };
  92
  93 static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
  94         {
  95         PCI_VENDOR_ID_NATINST, 0x2c90, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
  96         PCI_VENDOR_ID_NATINST, 0x1920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
  97         /*{ PCI_VENDOR_ID_NATINST, 0x0000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },*/
  98         {
  99         0}
 100 };
 101
 102 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
 103
 104 #define thisboard ((struct ni_670x_board *)dev->board_ptr)
 105
 106 struct ni_670x_private {
 107
 108         struct mite_struct *mite;
 109         int boardtype;
 110         int dio;
 111         unsigned int ao_readback[32];
 112 };
 113
 114 #define devpriv ((struct ni_670x_private *)dev->private)
 115 #define n_ni_670x_boards ARRAY_SIZE(ni_670x_boards)
 116
 117 static int ni_670x_attach(struct comedi_device *dev,
 118                           struct comedi_devconfig *it);
 119 static int ni_670x_detach(struct comedi_device *dev);
 120
 121 static struct comedi_driver driver_ni_670x = {
 122         .driver_name = "ni_670x",
 123         .module = THIS_MODULE,
 124         .attach = ni_670x_attach,
 125         .detach = ni_670x_detach,
 126 };
 127
 128 COMEDI_PCI_INITCLEANUP(driver_ni_670x, ni_670x_pci_table);
 129
 130 static struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };
 131
 132 static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot);
 133
 134 static int ni_670x_ao_winsn(struct comedi_device *dev,
 135                             struct comedi_subdevice *s,
 136                             struct comedi_insn *insn, unsigned int *data);
 137 static int ni_670x_ao_rinsn(struct comedi_device *dev,
 138                             struct comedi_subdevice *s,
 139                             struct comedi_insn *insn, unsigned int *data);
 140 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
 141                                  struct comedi_subdevice *s,
 142                                  struct comedi_insn *insn, unsigned int *data);
 143 static int ni_670x_dio_insn_config(struct comedi_device *dev,
 144                                    struct comedi_subdevice *s,
 145                                    struct comedi_insn *insn,
 146                                    unsigned int *data);
 147
 148 static int ni_670x_attach(struct comedi_device *dev,
 149                           struct comedi_devconfig *it)
 150 {
 151         struct comedi_subdevice *s;
 152         int ret;
 153         int i;
 154
 155         printk(KERN_INFO "comedi%d: ni_670x: ", dev->minor);
 156
 157         ret = alloc_private(dev, sizeof(struct ni_670x_private));
 158         if (ret < 0)
 159                 return ret;
 160
 161         ret = ni_670x_find_device(dev, it->options[0], it->options[1]);
 162         if (ret < 0)
 163                 return ret;
 164
 165         ret = mite_setup(devpriv->mite);
 166         if (ret < 0) {
 167                 printk(KERN_WARNING "error setting up mite\n");
 168                 return ret;
 169         }
 170         dev->board_name = thisboard->name;
 171         dev->irq = mite_irq(devpriv->mite);
 172         printk(KERN_INFO " %s", dev->board_name);
 173
 174         if (alloc_subdevices(dev, 2) < 0)
 175                 return -ENOMEM;
 176
 177         s = dev->subdevices + 0;
 178         /* analog output subdevice */
 179         s->type = COMEDI_SUBD_AO;
 180         s->subdev_flags = SDF_WRITABLE;
 181         s->n_chan = thisboard->ao_chans;
 182         s->maxdata = 0xffff;
 183         if (s->n_chan == 32) {
 184                 const struct comedi_lrange **range_table_list;
 185
 186                 range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
 187                                            GFP_KERNEL);
 188                 if (!range_table_list)
 189                         return -ENOMEM;
 190                 s->range_table_list = range_table_list;
 191                 for (i = 0; i < 16; i++) {
 192                         range_table_list[i] = &range_bipolar10;
 193                         range_table_list[16 + i] = &range_0_20mA;
 194                 }
 195         } else {
 196                 s->range_table = &range_bipolar10;
 197         }
 198         s->insn_write = &ni_670x_ao_winsn;
 199         s->insn_read = &ni_670x_ao_rinsn;
 200
 201         s = dev->subdevices + 1;
 202         /* digital i/o subdevice */
 203         s->type = COMEDI_SUBD_DIO;
 204         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 205         s->n_chan = 8;
 206         s->maxdata = 1;
 207         s->range_table = &range_digital;
 208         s->insn_bits = ni_670x_dio_insn_bits;
 209         s->insn_config = ni_670x_dio_insn_config;
 210
 211         /* Config of misc registers */
 212         writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET);
 213         /* Config of ao registers */
 214         writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);
 215
 216         printk(KERN_INFO "attached\n");
 217
 218         return 1;
 219 }
 220
 221 static int ni_670x_detach(struct comedi_device *dev)
 222 {
 223         printk(KERN_INFO "comedi%d: ni_670x: remove\n", dev->minor);
 224
 225         kfree(dev->subdevices[0].range_table_list);
 226
 227         if (dev->private && devpriv->mite)
 228                 mite_unsetup(devpriv->mite);
 229
 230         if (dev->irq)
 231                 free_irq(dev->irq, dev);
 232
 233         return 0;
 234 }
 235
 236 static int ni_670x_ao_winsn(struct comedi_device *dev,
 237                             struct comedi_subdevice *s,
 238                             struct comedi_insn *insn, unsigned int *data)
 239 {
 240         int i;
 241         int chan = CR_CHAN(insn->chanspec);
 242
 243         /* Channel number mapping :
 244
 245            NI 6703/ NI 6704     | NI 6704 Only
 246            ----------------------------------------------------
 247            vch(0)       :       0       | ich(16)       :       1
 248            vch(1)       :       2       | ich(17)       :       3
 249            .    :       .       |   .                   .
 250            .    :       .       |   .                   .
 251            .    :       .       |   .                   .
 252            vch(15)      :       30      | ich(31)       :       31      */
 253
 254         for (i = 0; i < insn->n; i++) {
 255                 /* First write in channel register which channel to use */
 256                 writel(((chan & 15) << 1) | ((chan & 16) >> 4),
 257                        devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);
 258                 /* write channel value */
 259                 writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);
 260                 devpriv->ao_readback[chan] = data[i];
 261         }
 262
 263         return i;
 264 }
 265
 266 static int ni_670x_ao_rinsn(struct comedi_device *dev,
 267                             struct comedi_subdevice *s,
 268                             struct comedi_insn *insn, unsigned int *data)
 269 {
 270         int i;
 271         int chan = CR_CHAN(insn->chanspec);
 272
 273         for (i = 0; i < insn->n; i++)
 274                 data[i] = devpriv->ao_readback[chan];
 275
 276         return i;
 277 }
 278
 279 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
 280                                  struct comedi_subdevice *s,
 281                                  struct comedi_insn *insn, unsigned int *data)
 282 {
 283         if (insn->n != 2)
 284                 return -EINVAL;
 285
 286         /* The insn data is a mask in data[0] and the new data
 287          * in data[1], each channel cooresponding to a bit. */
 288         if (data[0]) {
 289                 s->state &= ~data[0];
 290                 s->state |= data[0] & data[1];
 291                 writel(s->state,
 292                        devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
 293         }
 294
 295         /* on return, data[1] contains the value of the digital
 296          * input lines. */
 297         data[1] = readl(devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
 298
 299         return 2;
 300 }
 301
 302 static int ni_670x_dio_insn_config(struct comedi_device *dev,
 303                                    struct comedi_subdevice *s,
 304                                    struct comedi_insn *insn, unsigned int *data)
 305 {
 306         int chan = CR_CHAN(insn->chanspec);
 307
 308         switch (data[0]) {
 309         case INSN_CONFIG_DIO_OUTPUT:
 310                 s->io_bits |= 1 << chan;
 311                 break;
 312         case INSN_CONFIG_DIO_INPUT:
 313                 s->io_bits &= ~(1 << chan);
 314                 break;
 315         case INSN_CONFIG_DIO_QUERY:
 316                 data[1] =
 317                     (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
 318                 return insn->n;
 319                 break;
 320         default:
 321                 return -EINVAL;
 322                 break;
 323         }
 324         writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);
 325
 326         return insn->n;
 327 }
 328
 329 static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot)
 330 {
 331         struct mite_struct *mite;
 332         int i;
 333
 334         for (mite = mite_devices; mite; mite = mite->next) {
 335                 if (mite->used)
 336                         continue;
 337                 if (bus || slot) {
 338                         if (bus != mite->pcidev->bus->number
 339                             || slot != PCI_SLOT(mite->pcidev->devfn))
 340                                 continue;
 341                 }
 342
 343                 for (i = 0; i < n_ni_670x_boards; i++) {
 344                         if (mite_device_id(mite) == ni_670x_boards[i].dev_id) {
 345                                 dev->board_ptr = ni_670x_boards + i;
 346                                 devpriv->mite = mite;
 347
 348                                 return 0;
 349                         }
 350                 }
 351         }
 352         printk(KERN_INFO "no device found\n");
 353         mite_list_devices();
 354         return -EIO;
 355 }