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 "../comedidev.h"
  45
  46 #include "mite.h"
  47
  48 #define PCI_VENDOR_ID_NATINST   0x1093
  49
  50 #define AO_VALUE_OFFSET                 0x00
  51 #define AO_CHAN_OFFSET                  0x0c
  52 #define AO_STATUS_OFFSET                0x10
  53 #define AO_CONTROL_OFFSET               0x10
  54 #define DIO_PORT0_DIR_OFFSET    0x20
  55 #define DIO_PORT0_DATA_OFFSET   0x24
  56 #define DIO_PORT1_DIR_OFFSET    0x28
  57 #define DIO_PORT1_DATA_OFFSET   0x2c
  58 #define MISC_STATUS_OFFSET              0x14
  59 #define MISC_CONTROL_OFFSET             0x14
  60
  61 /* Board description*/
  62
  63 struct ni_670x_board {
  64         unsigned short dev_id;
  65         const char *name;
  66         unsigned short ao_chans;
  67         unsigned short ao_bits;
  68 };
  69
  70 static const struct ni_670x_board ni_670x_boards[] = {
  71         {
  72         .dev_id = 0x2c90,
  73         .name = "PCI-6703",
  74         .ao_chans = 16,
  75         .ao_bits = 16,
  76                 },
  77         {
  78         .dev_id = 0x1920,
  79         .name = "PXI-6704",
  80         .ao_chans = 32,
  81         .ao_bits = 16,
  82                 },
  83         {
  84         .dev_id = 0x1290,
  85         .name = "PCI-6704",
  86         .ao_chans = 32,
  87         .ao_bits = 16,
  88                 },
  89 };
  90
  91 static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
  92         {PCI_VENDOR_ID_NATINST, 0x2c90, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
  93         {PCI_VENDOR_ID_NATINST, 0x1920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
  94         /* { PCI_VENDOR_ID_NATINST, 0x0000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */
  95         {0}
  96 };
  97
  98 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
  99
 100 #define thisboard ((struct ni_670x_board *)dev->board_ptr)
 101
 102 struct ni_670x_private {
 103
 104         struct mite_struct *mite;
 105         int boardtype;
 106         int dio;
 107         unsigned int ao_readback[32];
 108 };
 109
 110
 111 #define devpriv ((struct ni_670x_private *)dev->private)
 112 #define n_ni_670x_boards (sizeof(ni_670x_boards)/sizeof(ni_670x_boards[0]))
 113
 114 static int ni_670x_attach(struct comedi_device *dev, struct comedi_devconfig *it);
 115 static int ni_670x_detach(struct comedi_device *dev);
 116
 117 static struct comedi_driver driver_ni_670x = {
 118         .driver_name = "ni_670x",
 119         .module = THIS_MODULE,
 120         .attach = ni_670x_attach,
 121         .detach = ni_670x_detach,
 122 };
 123
 124 COMEDI_PCI_INITCLEANUP(driver_ni_670x, ni_670x_pci_table);
 125
 126 static struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };
 127
 128 static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot);
 129
 130 static int ni_670x_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
 131         struct comedi_insn *insn, unsigned int *data);
 132 static int ni_670x_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
 133         struct comedi_insn *insn, unsigned int *data);
 134 static int ni_670x_dio_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
 135         struct comedi_insn *insn, unsigned int *data);
 136 static int ni_670x_dio_insn_config(struct comedi_device *dev, struct comedi_subdevice *s,
 137         struct comedi_insn *insn, unsigned int *data);
 138
 139 static int ni_670x_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 140 {
 141         struct comedi_subdevice *s;
 142         int ret;
 143         int i;
 144
 145         printk("comedi%d: ni_670x: ", dev->minor);
 146
 147         ret = alloc_private(dev, sizeof(struct ni_670x_private));
 148         if (ret < 0)
 149                 return ret;
 150
 151         ret = ni_670x_find_device(dev, it->options[0], it->options[1]);
 152         if (ret < 0)
 153                 return ret;
 154
 155         ret = mite_setup(devpriv->mite);
 156         if (ret < 0) {
 157                 printk("error setting up mite\n");
 158                 return ret;
 159         }
 160         dev->board_name = thisboard->name;
 161         dev->irq = mite_irq(devpriv->mite);
 162         printk(" %s", dev->board_name);
 163
 164         if (alloc_subdevices(dev, 2) < 0)
 165                 return -ENOMEM;
 166
 167         s = dev->subdevices + 0;
 168         /* analog output subdevice */
 169         s->type = COMEDI_SUBD_AO;
 170         s->subdev_flags = SDF_WRITABLE;
 171         s->n_chan = thisboard->ao_chans;
 172         s->maxdata = 0xffff;
 173         if (s->n_chan == 32) {
 174                 const struct comedi_lrange **range_table_list;
 175
 176                 range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
 177                         GFP_KERNEL);
 178                 if (!range_table_list)
 179                         return -ENOMEM;
 180                 s->range_table_list = range_table_list;
 181                 for (i = 0; i < 16; i++) {
 182                         range_table_list[i] = &range_bipolar10;
 183                         range_table_list[16 + i] = &range_0_20mA;
 184                 }
 185         } else {
 186                 s->range_table = &range_bipolar10;
 187         }
 188         s->insn_write = &ni_670x_ao_winsn;
 189         s->insn_read = &ni_670x_ao_rinsn;
 190
 191         s = dev->subdevices + 1;
 192         /* digital i/o subdevice */
 193         s->type = COMEDI_SUBD_DIO;
 194         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 195         s->n_chan = 8;
 196         s->maxdata = 1;
 197         s->range_table = &range_digital;
 198         s->insn_bits = ni_670x_dio_insn_bits;
 199         s->insn_config = ni_670x_dio_insn_config;
 200
 201         writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET); /* Config of misc registers */
 202         writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);   /* Config of ao registers */
 203
 204         printk("attached\n");
 205
 206         return 1;
 207 }
 208
 209 static int ni_670x_detach(struct comedi_device *dev)
 210 {
 211         printk("comedi%d: ni_670x: remove\n", dev->minor);
 212
 213         if (dev->subdevices[0].range_table_list) {
 214                 kfree(dev->subdevices[0].range_table_list);
 215         }
 216         if (dev->private && devpriv->mite)
 217                 mite_unsetup(devpriv->mite);
 218
 219         if (dev->irq)
 220                 free_irq(dev->irq, dev);
 221
 222         return 0;
 223 }
 224
 225 static int ni_670x_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
 226         struct comedi_insn *insn, unsigned int *data)
 227 {
 228         int i;
 229         int chan = CR_CHAN(insn->chanspec);
 230
 231         /* Channel number mapping :
 232
 233            NI 6703/ NI 6704     | NI 6704 Only
 234            ----------------------------------------------------
 235            vch(0)       :       0       | ich(16)       :       1
 236            vch(1)       :       2       | ich(17)       :       3
 237            .    :       .       |   .                   .
 238            .    :       .       |   .                   .
 239            .    :       .       |   .                   .
 240            vch(15)      :       30      | ich(31)       :       31      */
 241
 242         for (i = 0; i < insn->n; i++) {
 243                 writel(((chan & 15) << 1) | ((chan & 16) >> 4), devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);   /* First write in channel register which channel to use */
 244                 writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);  /* write channel value */
 245                 devpriv->ao_readback[chan] = data[i];
 246         }
 247
 248         return i;
 249 }
 250
 251 static int ni_670x_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
 252         struct comedi_insn *insn, unsigned int *data)
 253 {
 254         int i;
 255         int chan = CR_CHAN(insn->chanspec);
 256
 257         for (i = 0; i < insn->n; i++)
 258                 data[i] = devpriv->ao_readback[chan];
 259
 260         return i;
 261 }
 262
 263 static int ni_670x_dio_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
 264         struct comedi_insn *insn, unsigned int *data)
 265 {
 266         if (insn->n != 2)
 267                 return -EINVAL;
 268
 269         /* The insn data is a mask in data[0] and the new data
 270          * in data[1], each channel cooresponding to a bit. */
 271         if (data[0]) {
 272                 s->state &= ~data[0];
 273                 s->state |= data[0] & data[1];
 274                 writel(s->state,
 275                         devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
 276         }
 277
 278         /* on return, data[1] contains the value of the digital
 279          * input lines. */
 280         data[1] = readl(devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
 281
 282         return 2;
 283 }
 284
 285 static int ni_670x_dio_insn_config(struct comedi_device *dev, struct comedi_subdevice *s,
 286         struct comedi_insn *insn, unsigned int *data)
 287 {
 288         int chan = CR_CHAN(insn->chanspec);
 289
 290         switch (data[0]) {
 291         case INSN_CONFIG_DIO_OUTPUT:
 292                 s->io_bits |= 1 << chan;
 293                 break;
 294         case INSN_CONFIG_DIO_INPUT:
 295                 s->io_bits &= ~(1 << chan);
 296                 break;
 297         case INSN_CONFIG_DIO_QUERY:
 298                 data[1] =
 299                         (s->
 300                         io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
 301                 return insn->n;
 302                 break;
 303         default:
 304                 return -EINVAL;
 305                 break;
 306         }
 307         writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);
 308
 309         return insn->n;
 310 }
 311
 312 static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot)
 313 {
 314         struct mite_struct *mite;
 315         int i;
 316
 317         for (mite = mite_devices; mite; mite = mite->next) {
 318                 if (mite->used)
 319                         continue;
 320                 if (bus || slot) {
 321                         if (bus != mite->pcidev->bus->number
 322                                 || slot != PCI_SLOT(mite->pcidev->devfn))
 323                                 continue;
 324                 }
 325
 326                 for (i = 0; i < n_ni_670x_boards; i++) {
 327                         if (mite_device_id(mite) == ni_670x_boards[i].dev_id) {
 328                                 dev->board_ptr = ni_670x_boards + i;
 329                                 devpriv->mite = mite;
 330
 331                                 return 0;
 332                         }
 333                 }
 334         }
 335         printk("no device found\n");
 336         mite_list_devices();
 337         return -EIO;
 338 }