2 comedi/drivers/ke_counter.c
3 Comedi driver for Kolter-Electronic PCI Counter 1 Card
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 2000 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.
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.
25 Description: Driver for Kolter Electronic Counter Card
26 Devices: [Kolter Electronic] PCI Counter Card (ke_counter)
27 Author: Michael Hillmann
28 Updated: Mon, 14 Apr 2008 15:42:42 +0100
31 Configuration Options:
32 [0] - PCI bus of device (optional)
33 [1] - PCI slot of device (optional)
34 If bus/slot is not specified, the first supported
35 PCI device found will be used.
37 This driver is a simple driver to read the counter values from
38 Kolter Electronic PCI Counter Card.
41 #include "../comedidev.h"
43 #include "comedi_pci.h"
45 #define CNT_DRIVER_NAME "ke_counter"
46 #define PCI_VENDOR_ID_KOLTER 0x1001
47 #define CNT_CARD_DEVICE_ID 0x0014
49 /*-- function prototypes ----------------------------------------------------*/
51 static int cnt_attach(struct comedi_device *dev, struct comedi_devconfig *it);
52 static int cnt_detach(struct comedi_device *dev);
54 static DEFINE_PCI_DEVICE_TABLE(cnt_pci_table) = {
56 PCI_VENDOR_ID_KOLTER, CNT_CARD_DEVICE_ID, PCI_ANY_ID,
57 PCI_ANY_ID, 0, 0, 0}, {
61 MODULE_DEVICE_TABLE(pci, cnt_pci_table);
63 /*-- board specification structure ------------------------------------------*/
65 struct cnt_board_struct {
73 static const struct cnt_board_struct cnt_boards[] = {
75 .name = CNT_DRIVER_NAME,
76 .device_id = CNT_CARD_DEVICE_ID,
81 #define cnt_board_nbr (sizeof(cnt_boards)/sizeof(struct cnt_board_struct))
83 /*-- device private structure -----------------------------------------------*/
85 struct cnt_device_private {
87 struct pci_dev *pcidev;
90 #define devpriv ((struct cnt_device_private *)dev->private)
92 static struct comedi_driver cnt_driver = {
93 .driver_name = CNT_DRIVER_NAME,
94 .module = THIS_MODULE,
99 static int __devinit cnt_driver_pci_probe(struct pci_dev *dev,
100 const struct pci_device_id *ent)
102 return comedi_pci_auto_config(dev, cnt_driver.driver_name);
105 static void __devexit cnt_driver_pci_remove(struct pci_dev *dev)
107 comedi_pci_auto_unconfig(dev);
110 static struct pci_driver cnt_driver_pci_driver = {
111 .id_table = cnt_pci_table,
112 .probe = &cnt_driver_pci_probe,
113 .remove = __devexit_p(&cnt_driver_pci_remove)
116 static int __init cnt_driver_init_module(void)
120 retval = comedi_driver_register(&cnt_driver);
124 cnt_driver_pci_driver.name = (char *)cnt_driver.driver_name;
125 return pci_register_driver(&cnt_driver_pci_driver);
128 static void __exit cnt_driver_cleanup_module(void)
130 pci_unregister_driver(&cnt_driver_pci_driver);
131 comedi_driver_unregister(&cnt_driver);
134 module_init(cnt_driver_init_module);
135 module_exit(cnt_driver_cleanup_module);
137 /*-- counter write ----------------------------------------------------------*/
139 /* This should be used only for resetting the counters; maybe it is better
140 to make a special command 'reset'. */
141 static int cnt_winsn(struct comedi_device *dev,
142 struct comedi_subdevice *s, struct comedi_insn *insn,
145 int chan = CR_CHAN(insn->chanspec);
147 outb((unsigned char)((data[0] >> 24) & 0xff),
148 dev->iobase + chan * 0x20 + 0x10);
149 outb((unsigned char)((data[0] >> 16) & 0xff),
150 dev->iobase + chan * 0x20 + 0x0c);
151 outb((unsigned char)((data[0] >> 8) & 0xff),
152 dev->iobase + chan * 0x20 + 0x08);
153 outb((unsigned char)((data[0] >> 0) & 0xff),
154 dev->iobase + chan * 0x20 + 0x04);
156 /* return the number of samples written */
160 /*-- counter read -----------------------------------------------------------*/
162 static int cnt_rinsn(struct comedi_device *dev,
163 struct comedi_subdevice *s, struct comedi_insn *insn,
166 unsigned char a0, a1, a2, a3, a4;
167 int chan = CR_CHAN(insn->chanspec);
170 a0 = inb(dev->iobase + chan * 0x20);
171 a1 = inb(dev->iobase + chan * 0x20 + 0x04);
172 a2 = inb(dev->iobase + chan * 0x20 + 0x08);
173 a3 = inb(dev->iobase + chan * 0x20 + 0x0c);
174 a4 = inb(dev->iobase + chan * 0x20 + 0x10);
176 result = (a1 + (a2 * 256) + (a3 * 65536));
178 result = result - s->maxdata;
180 *data = (unsigned int)result;
182 /* return the number of samples read */
186 /*-- attach -----------------------------------------------------------------*/
188 static int cnt_attach(struct comedi_device *dev, struct comedi_devconfig *it)
190 struct comedi_subdevice *subdevice;
191 struct pci_dev *pci_device;
192 struct cnt_board_struct *board;
193 unsigned long io_base;
196 /* allocate device private structure */
197 error = alloc_private(dev, sizeof(struct cnt_device_private));
201 /* Probe the device to determine what device in the series it is. */
202 for (pci_device = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
204 pci_device = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_device)) {
205 if (pci_device->vendor == PCI_VENDOR_ID_KOLTER) {
206 for (i = 0; i < cnt_board_nbr; i++) {
207 if (cnt_boards[i].device_id ==
208 pci_device->device) {
209 /* was a particular bus/slot requested? */
210 if ((it->options[0] != 0)
211 || (it->options[1] != 0)) {
212 /* are we on the wrong bus/slot? */
213 if (pci_device->bus->number !=
216 PCI_SLOT(pci_device->devfn)
222 dev->board_ptr = cnt_boards + i;
224 (struct cnt_board_struct *)
232 "comedi%d: no supported board found! (req. bus/slot: %d/%d)\n",
233 dev->minor, it->options[0], it->options[1]);
238 "comedi%d: found %s at PCI bus %d, slot %d\n", dev->minor,
239 board->name, pci_device->bus->number,
240 PCI_SLOT(pci_device->devfn));
241 devpriv->pcidev = pci_device;
242 dev->board_name = board->name;
244 /* enable PCI device and request regions */
245 error = comedi_pci_enable(pci_device, CNT_DRIVER_NAME);
247 printk(KERN_WARNING "comedi%d: "
248 "failed to enable PCI device and request regions!\n",
253 /* read register base address [PCI_BASE_ADDRESS #0] */
254 io_base = pci_resource_start(pci_device, 0);
255 dev->iobase = io_base;
257 /* allocate the subdevice structures */
258 error = alloc_subdevices(dev, 1);
262 subdevice = dev->subdevices + 0;
263 dev->read_subdev = subdevice;
265 subdevice->type = COMEDI_SUBD_COUNTER;
266 subdevice->subdev_flags = SDF_READABLE /* | SDF_COMMON */ ;
267 subdevice->n_chan = board->cnt_channel_nbr;
268 subdevice->maxdata = (1 << board->cnt_bits) - 1;
269 subdevice->insn_read = cnt_rinsn;
270 subdevice->insn_write = cnt_winsn;
272 /* select 20MHz clock */
273 outb(3, dev->iobase + 248);
275 /* reset all counters */
276 outb(0, dev->iobase);
277 outb(0, dev->iobase + 0x20);
278 outb(0, dev->iobase + 0x40);
280 printk(KERN_INFO "comedi%d: " CNT_DRIVER_NAME " attached.\n",
285 /*-- detach -----------------------------------------------------------------*/
287 static int cnt_detach(struct comedi_device *dev)
289 if (devpriv && devpriv->pcidev) {
291 comedi_pci_disable(devpriv->pcidev);
292 pci_dev_put(devpriv->pcidev);
294 printk(KERN_INFO "comedi%d: " CNT_DRIVER_NAME " remove\n",
299 MODULE_AUTHOR("Comedi http://www.comedi.org");
300 MODULE_DESCRIPTION("Comedi low-level driver");
301 MODULE_LICENSE("GPL");