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 COMEDI_PCI_INITCLEANUP(cnt_driver, cnt_pci_table);
101 /*-- counter write ----------------------------------------------------------*/
103 /* This should be used only for resetting the counters; maybe it is better
104 to make a special command 'reset'. */
105 static int cnt_winsn(struct comedi_device *dev,
106 struct comedi_subdevice *s, struct comedi_insn *insn,
109 int chan = CR_CHAN(insn->chanspec);
111 outb((unsigned char)((data[0] >> 24) & 0xff),
112 dev->iobase + chan * 0x20 + 0x10);
113 outb((unsigned char)((data[0] >> 16) & 0xff),
114 dev->iobase + chan * 0x20 + 0x0c);
115 outb((unsigned char)((data[0] >> 8) & 0xff),
116 dev->iobase + chan * 0x20 + 0x08);
117 outb((unsigned char)((data[0] >> 0) & 0xff),
118 dev->iobase + chan * 0x20 + 0x04);
120 /* return the number of samples written */
124 /*-- counter read -----------------------------------------------------------*/
126 static int cnt_rinsn(struct comedi_device *dev,
127 struct comedi_subdevice *s, struct comedi_insn *insn,
130 unsigned char a0, a1, a2, a3, a4;
131 int chan = CR_CHAN(insn->chanspec);
134 a0 = inb(dev->iobase + chan * 0x20);
135 a1 = inb(dev->iobase + chan * 0x20 + 0x04);
136 a2 = inb(dev->iobase + chan * 0x20 + 0x08);
137 a3 = inb(dev->iobase + chan * 0x20 + 0x0c);
138 a4 = inb(dev->iobase + chan * 0x20 + 0x10);
140 result = (a1 + (a2 * 256) + (a3 * 65536));
142 result = result - s->maxdata;
144 *data = (unsigned int)result;
146 /* return the number of samples read */
150 /*-- attach -----------------------------------------------------------------*/
152 static int cnt_attach(struct comedi_device *dev, struct comedi_devconfig *it)
154 struct comedi_subdevice *subdevice;
155 struct pci_dev *pci_device;
156 struct cnt_board_struct *board;
157 unsigned long io_base;
160 /* allocate device private structure */
161 error = alloc_private(dev, sizeof(struct cnt_device_private));
165 /* Probe the device to determine what device in the series it is. */
166 for (pci_device = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
168 pci_device = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_device)) {
169 if (pci_device->vendor == PCI_VENDOR_ID_KOLTER) {
170 for (i = 0; i < cnt_board_nbr; i++) {
171 if (cnt_boards[i].device_id ==
172 pci_device->device) {
173 /* was a particular bus/slot requested? */
174 if ((it->options[0] != 0)
175 || (it->options[1] != 0)) {
176 /* are we on the wrong bus/slot? */
177 if (pci_device->bus->number !=
180 PCI_SLOT(pci_device->devfn)
186 dev->board_ptr = cnt_boards + i;
188 (struct cnt_board_struct *)
196 "comedi%d: no supported board found! (req. bus/slot: %d/%d)\n",
197 dev->minor, it->options[0], it->options[1]);
202 "comedi%d: found %s at PCI bus %d, slot %d\n", dev->minor,
203 board->name, pci_device->bus->number,
204 PCI_SLOT(pci_device->devfn));
205 devpriv->pcidev = pci_device;
206 dev->board_name = board->name;
208 /* enable PCI device and request regions */
209 error = comedi_pci_enable(pci_device, CNT_DRIVER_NAME);
211 printk(KERN_WARNING "comedi%d: "
212 "failed to enable PCI device and request regions!\n",
217 /* read register base address [PCI_BASE_ADDRESS #0] */
218 io_base = pci_resource_start(pci_device, 0);
219 dev->iobase = io_base;
221 /* allocate the subdevice structures */
222 error = alloc_subdevices(dev, 1);
226 subdevice = dev->subdevices + 0;
227 dev->read_subdev = subdevice;
229 subdevice->type = COMEDI_SUBD_COUNTER;
230 subdevice->subdev_flags = SDF_READABLE /* | SDF_COMMON */ ;
231 subdevice->n_chan = board->cnt_channel_nbr;
232 subdevice->maxdata = (1 << board->cnt_bits) - 1;
233 subdevice->insn_read = cnt_rinsn;
234 subdevice->insn_write = cnt_winsn;
236 /* select 20MHz clock */
237 outb(3, dev->iobase + 248);
239 /* reset all counters */
240 outb(0, dev->iobase);
241 outb(0, dev->iobase + 0x20);
242 outb(0, dev->iobase + 0x40);
244 printk(KERN_INFO "comedi%d: " CNT_DRIVER_NAME " attached.\n",
249 /*-- detach -----------------------------------------------------------------*/
251 static int cnt_detach(struct comedi_device *dev)
253 if (devpriv && devpriv->pcidev) {
255 comedi_pci_disable(devpriv->pcidev);
256 pci_dev_put(devpriv->pcidev);
258 printk(KERN_INFO "comedi%d: " CNT_DRIVER_NAME " remove\n",
263 MODULE_AUTHOR("Comedi http://www.comedi.org");
264 MODULE_DESCRIPTION("Comedi low-level driver");
265 MODULE_LICENSE("GPL");