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 "../comedidev.h"
  46
  47 #include "mite.h"
  48
  49 #define PCI_VENDOR_ID_NATINST   0x1093
  50
  51 #define AO_VALUE_OFFSET                 0x00
  52 #define AO_CHAN_OFFSET                  0x0c
  53 #define AO_STATUS_OFFSET                0x10
  54 #define AO_CONTROL_OFFSET               0x10
  55 #define DIO_PORT0_DIR_OFFSET    0x20
  56 #define DIO_PORT0_DATA_OFFSET   0x24
  57 #define DIO_PORT1_DIR_OFFSET    0x28
  58 #define DIO_PORT1_DATA_OFFSET   0x2c
  59 #define MISC_STATUS_OFFSET              0x14
  60 #define MISC_CONTROL_OFFSET             0x14
  61
  62 /* Board description*/
  63
  64 struct ni_670x_board {
  65         unsigned short dev_id;
  66         const char *name;
  67         unsigned short ao_chans;
  68         unsigned short ao_bits;
  69 };
  70
  71 static const struct ni_670x_board ni_670x_boards[] = {
  72         {
  73         .dev_id = 0x2c90,
  74         .name = "PCI-6703",
  75         .ao_chans = 16,
  76         .ao_bits = 16,
  77                 },
  78         {
  79         .dev_id = 0x1920,
  80         .name = "PXI-6704",
  81         .ao_chans = 32,
  82         .ao_bits = 16,
  83                 },
  84         {
  85         .dev_id = 0x1290,
  86         .name = "PCI-6704",
  87         .ao_chans = 32,
  88         .ao_bits = 16,
  89                 },
  90 };
  91
  92 static DEFINE_PCI_DEVICE_TABLE(ni_670x_pci_table) = {
  93         {PCI_VENDOR_ID_NATINST, 0x2c90, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
  94         {PCI_VENDOR_ID_NATINST, 0x1920, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
  95         /* { PCI_VENDOR_ID_NATINST, 0x0000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, */
  96         {0}
  97 };
  98
  99 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
 100
 101 #define thisboard ((struct ni_670x_board *)dev->board_ptr)
 102
 103 struct ni_670x_private {
 104
 105         struct mite_struct *mite;
 106         int boardtype;
 107         int dio;
 108         unsigned int ao_readback[32];
 109 };
 110
 111
 112 #define devpriv ((struct ni_670x_private *)dev->private)
 113 #define n_ni_670x_boards (sizeof(ni_670x_boards)/sizeof(ni_670x_boards[0]))
 114
 115 static int ni_670x_attach(struct comedi_device *dev, struct comedi_devconfig *it);
 116 static int ni_670x_detach(struct comedi_device *dev);
 117
 118 static struct comedi_driver driver_ni_670x = {
 119         .driver_name = "ni_670x",
 120         .module = THIS_MODULE,
 121         .attach = ni_670x_attach,
 122         .detach = ni_670x_detach,
 123 };
 124
 125 COMEDI_PCI_INITCLEANUP(driver_ni_670x, ni_670x_pci_table);
 126
 127 static struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };
 128
 129 static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot);
 130
 131 static int ni_670x_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
 132         struct comedi_insn *insn, unsigned int *data);
 133 static int ni_670x_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
 134         struct comedi_insn *insn, unsigned int *data);
 135 static int ni_670x_dio_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
 136         struct comedi_insn *insn, unsigned int *data);
 137 static int ni_670x_dio_insn_config(struct comedi_device *dev, struct comedi_subdevice *s,
 138         struct comedi_insn *insn, unsigned int *data);
 139
 140 static int ni_670x_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 141 {
 142         struct comedi_subdevice *s;
 143         int ret;
 144         int i;
 145
 146         printk("comedi%d: ni_670x: ", dev->minor);
 147
 148         ret = alloc_private(dev, sizeof(struct ni_670x_private));
 149         if (ret < 0)
 150                 return ret;
 151
 152         ret = ni_670x_find_device(dev, it->options[0], it->options[1]);
 153         if (ret < 0)
 154                 return ret;
 155
 156         ret = mite_setup(devpriv->mite);
 157         if (ret < 0) {
 158                 printk("error setting up mite\n");
 159                 return ret;
 160         }
 161         dev->board_name = thisboard->name;
 162         dev->irq = mite_irq(devpriv->mite);
 163         printk(" %s", dev->board_name);
 164
 165         if (alloc_subdevices(dev, 2) < 0)
 166                 return -ENOMEM;
 167
 168         s = dev->subdevices + 0;
 169         /* analog output subdevice */
 170         s->type = COMEDI_SUBD_AO;
 171         s->subdev_flags = SDF_WRITABLE;
 172         s->n_chan = thisboard->ao_chans;
 173         s->maxdata = 0xffff;
 174         if (s->n_chan == 32) {
 175                 const struct comedi_lrange **range_table_list;
 176
 177                 range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
 178                         GFP_KERNEL);
 179                 if (!range_table_list)
 180                         return -ENOMEM;
 181                 s->range_table_list = range_table_list;
 182                 for (i = 0; i < 16; i++) {
 183                         range_table_list[i] = &range_bipolar10;
 184                         range_table_list[16 + i] = &range_0_20mA;
 185                 }
 186         } else {
 187                 s->range_table = &range_bipolar10;
 188         }
 189         s->insn_write = &ni_670x_ao_winsn;
 190         s->insn_read = &ni_670x_ao_rinsn;
 191
 192         s = dev->subdevices + 1;
 193         /* digital i/o subdevice */
 194         s->type = COMEDI_SUBD_DIO;
 195         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
 196         s->n_chan = 8;
 197         s->maxdata = 1;
 198         s->range_table = &range_digital;
 199         s->insn_bits = ni_670x_dio_insn_bits;
 200         s->insn_config = ni_670x_dio_insn_config;
 201
 202         writel(0x10, devpriv->mite->daq_io_addr + MISC_CONTROL_OFFSET); /* Config of misc registers */
 203         writel(0x00, devpriv->mite->daq_io_addr + AO_CONTROL_OFFSET);   /* Config of ao registers */
 204
 205         printk("attached\n");
 206
 207         return 1;
 208 }
 209
 210 static int ni_670x_detach(struct comedi_device *dev)
 211 {
 212         printk("comedi%d: ni_670x: remove\n", dev->minor);
 213
 214         if (dev->subdevices[0].range_table_list) {
 215                 kfree(dev->subdevices[0].range_table_list);
 216         }
 217         if (dev->private && devpriv->mite)
 218                 mite_unsetup(devpriv->mite);
 219
 220         if (dev->irq)
 221                 free_irq(dev->irq, dev);
 222
 223         return 0;
 224 }
 225
 226 static int ni_670x_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
 227         struct comedi_insn *insn, unsigned int *data)
 228 {
 229         int i;
 230         int chan = CR_CHAN(insn->chanspec);
 231
 232         /* Channel number mapping :
 233
 234            NI 6703/ NI 6704     | NI 6704 Only
 235            ----------------------------------------------------
 236            vch(0)       :       0       | ich(16)       :       1
 237            vch(1)       :       2       | ich(17)       :       3
 238            .    :       .       |   .                   .
 239            .    :       .       |   .                   .
 240            .    :       .       |   .                   .
 241            vch(15)      :       30      | ich(31)       :       31      */
 242
 243         for (i = 0; i < insn->n; i++) {
 244                 writel(((chan & 15) << 1) | ((chan & 16) >> 4), devpriv->mite->daq_io_addr + AO_CHAN_OFFSET);   /* First write in channel register which channel to use */
 245                 writel(data[i], devpriv->mite->daq_io_addr + AO_VALUE_OFFSET);  /* write channel value */
 246                 devpriv->ao_readback[chan] = data[i];
 247         }
 248
 249         return i;
 250 }
 251
 252 static int ni_670x_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
 253         struct comedi_insn *insn, unsigned int *data)
 254 {
 255         int i;
 256         int chan = CR_CHAN(insn->chanspec);
 257
 258         for (i = 0; i < insn->n; i++)
 259                 data[i] = devpriv->ao_readback[chan];
 260
 261         return i;
 262 }
 263
 264 static int ni_670x_dio_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
 265         struct comedi_insn *insn, unsigned int *data)
 266 {
 267         if (insn->n != 2)
 268                 return -EINVAL;
 269
 270         /* The insn data is a mask in data[0] and the new data
 271          * in data[1], each channel cooresponding to a bit. */
 272         if (data[0]) {
 273                 s->state &= ~data[0];
 274                 s->state |= data[0] & data[1];
 275                 writel(s->state,
 276                         devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
 277         }
 278
 279         /* on return, data[1] contains the value of the digital
 280          * input lines. */
 281         data[1] = readl(devpriv->mite->daq_io_addr + DIO_PORT0_DATA_OFFSET);
 282
 283         return 2;
 284 }
 285
 286 static int ni_670x_dio_insn_config(struct comedi_device *dev, struct comedi_subdevice *s,
 287         struct comedi_insn *insn, unsigned int *data)
 288 {
 289         int chan = CR_CHAN(insn->chanspec);
 290
 291         switch (data[0]) {
 292         case INSN_CONFIG_DIO_OUTPUT:
 293                 s->io_bits |= 1 << chan;
 294                 break;
 295         case INSN_CONFIG_DIO_INPUT:
 296                 s->io_bits &= ~(1 << chan);
 297                 break;
 298         case INSN_CONFIG_DIO_QUERY:
 299                 data[1] =
 300                         (s->
 301                         io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
 302                 return insn->n;
 303                 break;
 304         default:
 305                 return -EINVAL;
 306                 break;
 307         }
 308         writel(s->io_bits, devpriv->mite->daq_io_addr + DIO_PORT0_DIR_OFFSET);
 309
 310         return insn->n;
 311 }
 312
 313 static int ni_670x_find_device(struct comedi_device *dev, int bus, int slot)
 314 {
 315         struct mite_struct *mite;
 316         int i;
 317
 318         for (mite = mite_devices; mite; mite = mite->next) {
 319                 if (mite->used)
 320                         continue;
 321                 if (bus || slot) {
 322                         if (bus != mite->pcidev->bus->number
 323                                 || slot != PCI_SLOT(mite->pcidev->devfn))
 324                                 continue;
 325                 }
 326
 327                 for (i = 0; i < n_ni_670x_boards; i++) {
 328                         if (mite_device_id(mite) == ni_670x_boards[i].dev_id) {
 329                                 dev->board_ptr = ni_670x_boards + i;
 330                                 devpriv->mite = mite;
 331
 332                                 return 0;
 333                         }
 334                 }
 335         }
 336         printk("no device found\n");
 337         mite_list_devices();
 338         return -EIO;
 339 }