Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/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 /*
 19 Driver: ni_670x
 20 Description: National Instruments 670x
 21 Author: Bart Joris <bjoris@advalvas.be>
 22 Updated: Wed, 11 Dec 2002 18:25:35 -0800
 23 Devices: [National Instruments] PCI-6703 (ni_670x), PCI-6704
 24 Status: unknown
 25 
 26 Commands are not supported.
 27 */
 28 
 29 /*
 30         Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001
 31 
 32         Manuals:
 33 
 34         322110a.pdf     PCI/PXI-6704 User Manual
 35         322110b.pdf     PCI/PXI-6703/6704 User Manual
 36 
 37 */
 38 
 39 #include <linux/module.h>
 40 #include <linux/pci.h>
 41 #include <linux/interrupt.h>
 42 #include <linux/slab.h>
 43 
 44 #include "../comedidev.h"
 45 
 46 #define AO_VALUE_OFFSET                 0x00
 47 #define AO_CHAN_OFFSET                  0x0c
 48 #define AO_STATUS_OFFSET                0x10
 49 #define AO_CONTROL_OFFSET               0x10
 50 #define DIO_PORT0_DIR_OFFSET    0x20
 51 #define DIO_PORT0_DATA_OFFSET   0x24
 52 #define DIO_PORT1_DIR_OFFSET    0x28
 53 #define DIO_PORT1_DATA_OFFSET   0x2c
 54 #define MISC_STATUS_OFFSET              0x14
 55 #define MISC_CONTROL_OFFSET             0x14
 56 
 57 enum ni_670x_boardid {
 58         BOARD_PCI6703,
 59         BOARD_PXI6704,
 60         BOARD_PCI6704,
 61 };
 62 
 63 struct ni_670x_board {
 64         const char *name;
 65         unsigned short ao_chans;
 66 };
 67 
 68 static const struct ni_670x_board ni_670x_boards[] = {
 69         [BOARD_PCI6703] = {
 70                 .name           = "PCI-6703",
 71                 .ao_chans       = 16,
 72         },
 73         [BOARD_PXI6704] = {
 74                 .name           = "PXI-6704",
 75                 .ao_chans       = 32,
 76         },
 77         [BOARD_PCI6704] = {
 78                 .name           = "PCI-6704",
 79                 .ao_chans       = 32,
 80         },
 81 };
 82 
 83 struct ni_670x_private {
 84         int boardtype;
 85         int dio;
 86 };
 87 
 88 static int ni_670x_ao_insn_write(struct comedi_device *dev,
 89                                  struct comedi_subdevice *s,
 90                                  struct comedi_insn *insn,
 91                                  unsigned int *data)
 92 {
 93         unsigned int chan = CR_CHAN(insn->chanspec);
 94         unsigned int val = s->readback[chan];
 95         int i;
 96 
 97         /*
 98          * Channel number mapping:
 99          *
100          * NI 6703/ NI 6704 | NI 6704 Only
101          * -------------------------------
102          * vch(0)  :  0     | ich(16) :  1
103          * vch(1)  :  2     | ich(17) :  3
104          * ...              | ...
105          * vch(15) : 30     | ich(31) : 31
106          */
107         for (i = 0; i < insn->n; i++) {
108                 val = data[i];
109                 /* First write in channel register which channel to use */
110                 writel(((chan & 15) << 1) | ((chan & 16) >> 4),
111                        dev->mmio + AO_CHAN_OFFSET);
112                 /* write channel value */
113                 writel(val, dev->mmio + AO_VALUE_OFFSET);
114         }
115         s->readback[chan] = val;
116 
117         return insn->n;
118 }
119 
120 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
121                                  struct comedi_subdevice *s,
122                                  struct comedi_insn *insn,
123                                  unsigned int *data)
124 {
125         if (comedi_dio_update_state(s, data))
126                 writel(s->state, dev->mmio + DIO_PORT0_DATA_OFFSET);
127 
128         data[1] = readl(dev->mmio + DIO_PORT0_DATA_OFFSET);
129 
130         return insn->n;
131 }
132 
133 static int ni_670x_dio_insn_config(struct comedi_device *dev,
134                                    struct comedi_subdevice *s,
135                                    struct comedi_insn *insn,
136                                    unsigned int *data)
137 {
138         int ret;
139 
140         ret = comedi_dio_insn_config(dev, s, insn, data, 0);
141         if (ret)
142                 return ret;
143 
144         writel(s->io_bits, dev->mmio + DIO_PORT0_DIR_OFFSET);
145 
146         return insn->n;
147 }
148 
149 /* ripped from mite.h and mite_setup2() to avoid mite dependancy */
150 #define MITE_IODWBSR    0xc0     /* IO Device Window Base Size Register */
151 #define WENAB           (1 << 7) /* window enable */
152 
153 static int ni_670x_mite_init(struct pci_dev *pcidev)
154 {
155         void __iomem *mite_base;
156         u32 main_phys_addr;
157 
158         /* ioremap the MITE registers (BAR 0) temporarily */
159         mite_base = pci_ioremap_bar(pcidev, 0);
160         if (!mite_base)
161                 return -ENOMEM;
162 
163         /* set data window to main registers (BAR 1) */
164         main_phys_addr = pci_resource_start(pcidev, 1);
165         writel(main_phys_addr | WENAB, mite_base + MITE_IODWBSR);
166 
167         /* finished with MITE registers */
168         iounmap(mite_base);
169         return 0;
170 }
171 
172 static int ni_670x_auto_attach(struct comedi_device *dev,
173                                unsigned long context)
174 {
175         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
176         const struct ni_670x_board *thisboard = NULL;
177         struct ni_670x_private *devpriv;
178         struct comedi_subdevice *s;
179         int ret;
180         int i;
181 
182         if (context < ARRAY_SIZE(ni_670x_boards))
183                 thisboard = &ni_670x_boards[context];
184         if (!thisboard)
185                 return -ENODEV;
186         dev->board_ptr = thisboard;
187         dev->board_name = thisboard->name;
188 
189         ret = comedi_pci_enable(dev);
190         if (ret)
191                 return ret;
192 
193         devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
194         if (!devpriv)
195                 return -ENOMEM;
196 
197         ret = ni_670x_mite_init(pcidev);
198         if (ret)
199                 return ret;
200 
201         dev->mmio = pci_ioremap_bar(pcidev, 1);
202         if (!dev->mmio)
203                 return -ENOMEM;
204 
205         ret = comedi_alloc_subdevices(dev, 2);
206         if (ret)
207                 return ret;
208 
209         s = &dev->subdevices[0];
210         /* analog output subdevice */
211         s->type = COMEDI_SUBD_AO;
212         s->subdev_flags = SDF_WRITABLE;
213         s->n_chan = thisboard->ao_chans;
214         s->maxdata = 0xffff;
215         if (s->n_chan == 32) {
216                 const struct comedi_lrange **range_table_list;
217 
218                 range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
219                                            GFP_KERNEL);
220                 if (!range_table_list)
221                         return -ENOMEM;
222                 s->range_table_list = range_table_list;
223                 for (i = 0; i < 16; i++) {
224                         range_table_list[i] = &range_bipolar10;
225                         range_table_list[16 + i] = &range_0_20mA;
226                 }
227         } else {
228                 s->range_table = &range_bipolar10;
229         }
230         s->insn_write = ni_670x_ao_insn_write;
231         s->insn_read = comedi_readback_insn_read;
232 
233         ret = comedi_alloc_subdev_readback(s);
234         if (ret)
235                 return ret;
236 
237         s = &dev->subdevices[1];
238         /* digital i/o subdevice */
239         s->type = COMEDI_SUBD_DIO;
240         s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
241         s->n_chan = 8;
242         s->maxdata = 1;
243         s->range_table = &range_digital;
244         s->insn_bits = ni_670x_dio_insn_bits;
245         s->insn_config = ni_670x_dio_insn_config;
246 
247         /* Config of misc registers */
248         writel(0x10, dev->mmio + MISC_CONTROL_OFFSET);
249         /* Config of ao registers */
250         writel(0x00, dev->mmio + AO_CONTROL_OFFSET);
251 
252         return 0;
253 }
254 
255 static void ni_670x_detach(struct comedi_device *dev)
256 {
257         struct comedi_subdevice *s;
258 
259         comedi_pci_detach(dev);
260         if (dev->n_subdevices) {
261                 s = &dev->subdevices[0];
262                 if (s)
263                         kfree(s->range_table_list);
264         }
265 }
266 
267 static struct comedi_driver ni_670x_driver = {
268         .driver_name    = "ni_670x",
269         .module         = THIS_MODULE,
270         .auto_attach    = ni_670x_auto_attach,
271         .detach         = ni_670x_detach,
272 };
273 
274 static int ni_670x_pci_probe(struct pci_dev *dev,
275                              const struct pci_device_id *id)
276 {
277         return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
278 }
279 
280 static const struct pci_device_id ni_670x_pci_table[] = {
281         { PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
282         { PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
283         { PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
284         { 0 }
285 };
286 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
287 
288 static struct pci_driver ni_670x_pci_driver = {
289         .name           = "ni_670x",
290         .id_table       = ni_670x_pci_table,
291         .probe          = ni_670x_pci_probe,
292         .remove         = comedi_pci_auto_unconfig,
293 };
294 module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);
295 
296 MODULE_AUTHOR("Comedi http://www.comedi.org");
297 MODULE_DESCRIPTION("Comedi low-level driver");
298 MODULE_LICENSE("GPL");
299 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us