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
= NULL
;
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_each_pci_dev(pci_device
) {
203 if (pci_device
->vendor
== PCI_VENDOR_ID_KOLTER
) {
204 for (i
= 0; i
< cnt_board_nbr
; i
++) {
205 if (cnt_boards
[i
].device_id
==
206 pci_device
->device
) {
207 /* was a particular bus/slot requested? */
208 if ((it
->options
[0] != 0)
209 || (it
->options
[1] != 0)) {
210 /* are we on the wrong bus/slot? */
211 if (pci_device
->bus
->number
!=
214 PCI_SLOT(pci_device
->devfn
)
220 dev
->board_ptr
= cnt_boards
+ i
;
222 (struct cnt_board_struct
*)
230 "comedi%d: no supported board found! (req. bus/slot: %d/%d)\n",
231 dev
->minor
, it
->options
[0], it
->options
[1]);
236 "comedi%d: found %s at PCI bus %d, slot %d\n", dev
->minor
,
237 board
->name
, pci_device
->bus
->number
,
238 PCI_SLOT(pci_device
->devfn
));
239 devpriv
->pcidev
= pci_device
;
240 dev
->board_name
= board
->name
;
242 /* enable PCI device and request regions */
243 error
= comedi_pci_enable(pci_device
, CNT_DRIVER_NAME
);
245 printk(KERN_WARNING
"comedi%d: "
246 "failed to enable PCI device and request regions!\n",
251 /* read register base address [PCI_BASE_ADDRESS #0] */
252 io_base
= pci_resource_start(pci_device
, 0);
253 dev
->iobase
= io_base
;
255 /* allocate the subdevice structures */
256 error
= alloc_subdevices(dev
, 1);
260 subdevice
= dev
->subdevices
+ 0;
261 dev
->read_subdev
= subdevice
;
263 subdevice
->type
= COMEDI_SUBD_COUNTER
;
264 subdevice
->subdev_flags
= SDF_READABLE
/* | SDF_COMMON */ ;
265 subdevice
->n_chan
= board
->cnt_channel_nbr
;
266 subdevice
->maxdata
= (1 << board
->cnt_bits
) - 1;
267 subdevice
->insn_read
= cnt_rinsn
;
268 subdevice
->insn_write
= cnt_winsn
;
270 /* select 20MHz clock */
271 outb(3, dev
->iobase
+ 248);
273 /* reset all counters */
274 outb(0, dev
->iobase
);
275 outb(0, dev
->iobase
+ 0x20);
276 outb(0, dev
->iobase
+ 0x40);
278 printk(KERN_INFO
"comedi%d: " CNT_DRIVER_NAME
" attached.\n",
283 /*-- detach -----------------------------------------------------------------*/
285 static int cnt_detach(struct comedi_device
*dev
)
287 if (devpriv
&& devpriv
->pcidev
) {
289 comedi_pci_disable(devpriv
->pcidev
);
290 pci_dev_put(devpriv
->pcidev
);
292 printk(KERN_INFO
"comedi%d: " CNT_DRIVER_NAME
" remove\n",
297 MODULE_AUTHOR("Comedi http://www.comedi.org");
298 MODULE_DESCRIPTION("Comedi low-level driver");
299 MODULE_LICENSE("GPL");