2 comedi/drivers/ni_670x.c
3 Hardware driver for NI 670x devices
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 1997-2001 David A. Schleef <ds@schleef.org>
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.
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.
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
26 Commands are not supported.
30 Bart Joris <bjoris@advalvas.be> Last updated on 20/08/2001
34 322110a.pdf PCI/PXI-6704 User Manual
35 322110b.pdf PCI/PXI-6703/6704 User Manual
39 #include <linux/module.h>
40 #include <linux/pci.h>
41 #include <linux/interrupt.h>
42 #include <linux/slab.h>
44 #include "../comedidev.h"
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
57 enum ni_670x_boardid {
63 struct ni_670x_board {
65 unsigned short ao_chans;
68 static const struct ni_670x_board ni_670x_boards[] = {
83 struct ni_670x_private {
88 static int ni_670x_ao_insn_write(struct comedi_device *dev,
89 struct comedi_subdevice *s,
90 struct comedi_insn *insn,
93 unsigned int chan = CR_CHAN(insn->chanspec);
94 unsigned int val = s->readback[chan];
98 * Channel number mapping:
100 * NI 6703/ NI 6704 | NI 6704 Only
101 * -------------------------------
102 * vch(0) : 0 | ich(16) : 1
103 * vch(1) : 2 | ich(17) : 3
105 * vch(15) : 30 | ich(31) : 31
107 for (i = 0; i < insn->n; 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);
115 s->readback[chan] = val;
120 static int ni_670x_dio_insn_bits(struct comedi_device *dev,
121 struct comedi_subdevice *s,
122 struct comedi_insn *insn,
125 if (comedi_dio_update_state(s, data))
126 writel(s->state, dev->mmio + DIO_PORT0_DATA_OFFSET);
128 data[1] = readl(dev->mmio + DIO_PORT0_DATA_OFFSET);
133 static int ni_670x_dio_insn_config(struct comedi_device *dev,
134 struct comedi_subdevice *s,
135 struct comedi_insn *insn,
140 ret = comedi_dio_insn_config(dev, s, insn, data, 0);
144 writel(s->io_bits, dev->mmio + DIO_PORT0_DIR_OFFSET);
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 */
153 static int ni_670x_mite_init(struct pci_dev *pcidev)
155 void __iomem *mite_base;
158 /* ioremap the MITE registers (BAR 0) temporarily */
159 mite_base = pci_ioremap_bar(pcidev, 0);
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);
167 /* finished with MITE registers */
172 static int ni_670x_auto_attach(struct comedi_device *dev,
173 unsigned long context)
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;
182 if (context < ARRAY_SIZE(ni_670x_boards))
183 thisboard = &ni_670x_boards[context];
186 dev->board_ptr = thisboard;
187 dev->board_name = thisboard->name;
189 ret = comedi_pci_enable(dev);
193 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
197 ret = ni_670x_mite_init(pcidev);
201 dev->mmio = pci_ioremap_bar(pcidev, 1);
205 ret = comedi_alloc_subdevices(dev, 2);
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;
215 if (s->n_chan == 32) {
216 const struct comedi_lrange **range_table_list;
218 range_table_list = kmalloc(sizeof(struct comedi_lrange *) * 32,
220 if (!range_table_list)
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;
228 s->range_table = &range_bipolar10;
230 s->insn_write = ni_670x_ao_insn_write;
232 ret = comedi_alloc_subdev_readback(s);
236 s = &dev->subdevices[1];
237 /* digital i/o subdevice */
238 s->type = COMEDI_SUBD_DIO;
239 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
242 s->range_table = &range_digital;
243 s->insn_bits = ni_670x_dio_insn_bits;
244 s->insn_config = ni_670x_dio_insn_config;
246 /* Config of misc registers */
247 writel(0x10, dev->mmio + MISC_CONTROL_OFFSET);
248 /* Config of ao registers */
249 writel(0x00, dev->mmio + AO_CONTROL_OFFSET);
254 static void ni_670x_detach(struct comedi_device *dev)
256 struct comedi_subdevice *s;
258 comedi_pci_detach(dev);
259 if (dev->n_subdevices) {
260 s = &dev->subdevices[0];
262 kfree(s->range_table_list);
266 static struct comedi_driver ni_670x_driver = {
267 .driver_name = "ni_670x",
268 .module = THIS_MODULE,
269 .auto_attach = ni_670x_auto_attach,
270 .detach = ni_670x_detach,
273 static int ni_670x_pci_probe(struct pci_dev *dev,
274 const struct pci_device_id *id)
276 return comedi_pci_auto_config(dev, &ni_670x_driver, id->driver_data);
279 static const struct pci_device_id ni_670x_pci_table[] = {
280 { PCI_VDEVICE(NI, 0x1290), BOARD_PCI6704 },
281 { PCI_VDEVICE(NI, 0x1920), BOARD_PXI6704 },
282 { PCI_VDEVICE(NI, 0x2c90), BOARD_PCI6703 },
285 MODULE_DEVICE_TABLE(pci, ni_670x_pci_table);
287 static struct pci_driver ni_670x_pci_driver = {
289 .id_table = ni_670x_pci_table,
290 .probe = ni_670x_pci_probe,
291 .remove = comedi_pci_auto_unconfig,
293 module_comedi_pci_driver(ni_670x_driver, ni_670x_pci_driver);
295 MODULE_AUTHOR("Comedi http://www.comedi.org");
296 MODULE_DESCRIPTION("Comedi low-level driver");
297 MODULE_LICENSE("GPL");