| /* |
| comedi/drivers/ke_counter.c |
| Comedi driver for Kolter-Electronic PCI Counter 1 Card |
| |
| COMEDI - Linux Control and Measurement Device Interface |
| Copyright (C) 2000 David A. Schleef <ds@schleef.org> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
| */ |
| /* |
| Driver: ke_counter |
| Description: Driver for Kolter Electronic Counter Card |
| Devices: [Kolter Electronic] PCI Counter Card (ke_counter) |
| Author: Michael Hillmann |
| Updated: Mon, 14 Apr 2008 15:42:42 +0100 |
| Status: tested |
| |
| Configuration Options: |
| [0] - PCI bus of device (optional) |
| [1] - PCI slot of device (optional) |
| If bus/slot is not specified, the first supported |
| PCI device found will be used. |
| |
| This driver is a simple driver to read the counter values from |
| Kolter Electronic PCI Counter Card. |
| */ |
| |
| #include "../comedidev.h" |
| |
| #include "comedi_pci.h" |
| |
| #define CNT_DRIVER_NAME "ke_counter" |
| #define PCI_VENDOR_ID_KOLTER 0x1001 |
| #define CNT_CARD_DEVICE_ID 0x0014 |
| |
| /*-- function prototypes ----------------------------------------------------*/ |
| |
| static int cnt_attach(struct comedi_device *dev, struct comedi_devconfig *it); |
| static int cnt_detach(struct comedi_device *dev); |
| |
| static DEFINE_PCI_DEVICE_TABLE(cnt_pci_table) = { |
| { |
| PCI_VENDOR_ID_KOLTER, CNT_CARD_DEVICE_ID, PCI_ANY_ID, |
| PCI_ANY_ID, 0, 0, 0}, { |
| 0} |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, cnt_pci_table); |
| |
| /*-- board specification structure ------------------------------------------*/ |
| |
| struct cnt_board_struct { |
| |
| const char *name; |
| int device_id; |
| int cnt_channel_nbr; |
| int cnt_bits; |
| }; |
| |
| static const struct cnt_board_struct cnt_boards[] = { |
| { |
| .name = CNT_DRIVER_NAME, |
| .device_id = CNT_CARD_DEVICE_ID, |
| .cnt_channel_nbr = 3, |
| .cnt_bits = 24} |
| }; |
| |
| #define cnt_board_nbr (sizeof(cnt_boards)/sizeof(struct cnt_board_struct)) |
| |
| /*-- device private structure -----------------------------------------------*/ |
| |
| struct cnt_device_private { |
| |
| struct pci_dev *pcidev; |
| }; |
| |
| #define devpriv ((struct cnt_device_private *)dev->private) |
| |
| static struct comedi_driver cnt_driver = { |
| .driver_name = CNT_DRIVER_NAME, |
| .module = THIS_MODULE, |
| .attach = cnt_attach, |
| .detach = cnt_detach, |
| }; |
| |
| static int __devinit cnt_driver_pci_probe(struct pci_dev *dev, |
| const struct pci_device_id *ent) |
| { |
| return comedi_pci_auto_config(dev, cnt_driver.driver_name); |
| } |
| |
| static void __devexit cnt_driver_pci_remove(struct pci_dev *dev) |
| { |
| comedi_pci_auto_unconfig(dev); |
| } |
| |
| static struct pci_driver cnt_driver_pci_driver = { |
| .id_table = cnt_pci_table, |
| .probe = &cnt_driver_pci_probe, |
| .remove = __devexit_p(&cnt_driver_pci_remove) |
| }; |
| |
| static int __init cnt_driver_init_module(void) |
| { |
| int retval; |
| |
| retval = comedi_driver_register(&cnt_driver); |
| if (retval < 0) |
| return retval; |
| |
| cnt_driver_pci_driver.name = (char *)cnt_driver.driver_name; |
| return pci_register_driver(&cnt_driver_pci_driver); |
| } |
| |
| static void __exit cnt_driver_cleanup_module(void) |
| { |
| pci_unregister_driver(&cnt_driver_pci_driver); |
| comedi_driver_unregister(&cnt_driver); |
| } |
| |
| module_init(cnt_driver_init_module); |
| module_exit(cnt_driver_cleanup_module); |
| |
| /*-- counter write ----------------------------------------------------------*/ |
| |
| /* This should be used only for resetting the counters; maybe it is better |
| to make a special command 'reset'. */ |
| static int cnt_winsn(struct comedi_device *dev, |
| struct comedi_subdevice *s, struct comedi_insn *insn, |
| unsigned int *data) |
| { |
| int chan = CR_CHAN(insn->chanspec); |
| |
| outb((unsigned char)((data[0] >> 24) & 0xff), |
| dev->iobase + chan * 0x20 + 0x10); |
| outb((unsigned char)((data[0] >> 16) & 0xff), |
| dev->iobase + chan * 0x20 + 0x0c); |
| outb((unsigned char)((data[0] >> 8) & 0xff), |
| dev->iobase + chan * 0x20 + 0x08); |
| outb((unsigned char)((data[0] >> 0) & 0xff), |
| dev->iobase + chan * 0x20 + 0x04); |
| |
| /* return the number of samples written */ |
| return 1; |
| } |
| |
| /*-- counter read -----------------------------------------------------------*/ |
| |
| static int cnt_rinsn(struct comedi_device *dev, |
| struct comedi_subdevice *s, struct comedi_insn *insn, |
| unsigned int *data) |
| { |
| unsigned char a0, a1, a2, a3, a4; |
| int chan = CR_CHAN(insn->chanspec); |
| int result; |
| |
| a0 = inb(dev->iobase + chan * 0x20); |
| a1 = inb(dev->iobase + chan * 0x20 + 0x04); |
| a2 = inb(dev->iobase + chan * 0x20 + 0x08); |
| a3 = inb(dev->iobase + chan * 0x20 + 0x0c); |
| a4 = inb(dev->iobase + chan * 0x20 + 0x10); |
| |
| result = (a1 + (a2 * 256) + (a3 * 65536)); |
| if (a4 > 0) |
| result = result - s->maxdata; |
| |
| *data = (unsigned int)result; |
| |
| /* return the number of samples read */ |
| return 1; |
| } |
| |
| /*-- attach -----------------------------------------------------------------*/ |
| |
| static int cnt_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
| { |
| struct comedi_subdevice *subdevice; |
| struct pci_dev *pci_device = NULL; |
| struct cnt_board_struct *board; |
| unsigned long io_base; |
| int error, i; |
| |
| /* allocate device private structure */ |
| error = alloc_private(dev, sizeof(struct cnt_device_private)); |
| if (error < 0) |
| return error; |
| |
| /* Probe the device to determine what device in the series it is. */ |
| for_each_pci_dev(pci_device) { |
| if (pci_device->vendor == PCI_VENDOR_ID_KOLTER) { |
| for (i = 0; i < cnt_board_nbr; i++) { |
| if (cnt_boards[i].device_id == |
| pci_device->device) { |
| /* was a particular bus/slot requested? */ |
| if ((it->options[0] != 0) |
| || (it->options[1] != 0)) { |
| /* are we on the wrong bus/slot? */ |
| if (pci_device->bus->number != |
| it->options[0] |
| || |
| PCI_SLOT(pci_device->devfn) |
| != it->options[1]) { |
| continue; |
| } |
| } |
| |
| dev->board_ptr = cnt_boards + i; |
| board = |
| (struct cnt_board_struct *) |
| dev->board_ptr; |
| goto found; |
| } |
| } |
| } |
| } |
| printk(KERN_WARNING |
| "comedi%d: no supported board found! (req. bus/slot: %d/%d)\n", |
| dev->minor, it->options[0], it->options[1]); |
| return -EIO; |
| |
| found: |
| printk(KERN_INFO |
| "comedi%d: found %s at PCI bus %d, slot %d\n", dev->minor, |
| board->name, pci_device->bus->number, |
| PCI_SLOT(pci_device->devfn)); |
| devpriv->pcidev = pci_device; |
| dev->board_name = board->name; |
| |
| /* enable PCI device and request regions */ |
| error = comedi_pci_enable(pci_device, CNT_DRIVER_NAME); |
| if (error < 0) { |
| printk(KERN_WARNING "comedi%d: " |
| "failed to enable PCI device and request regions!\n", |
| dev->minor); |
| return error; |
| } |
| |
| /* read register base address [PCI_BASE_ADDRESS #0] */ |
| io_base = pci_resource_start(pci_device, 0); |
| dev->iobase = io_base; |
| |
| /* allocate the subdevice structures */ |
| error = alloc_subdevices(dev, 1); |
| if (error < 0) |
| return error; |
| |
| subdevice = dev->subdevices + 0; |
| dev->read_subdev = subdevice; |
| |
| subdevice->type = COMEDI_SUBD_COUNTER; |
| subdevice->subdev_flags = SDF_READABLE /* | SDF_COMMON */ ; |
| subdevice->n_chan = board->cnt_channel_nbr; |
| subdevice->maxdata = (1 << board->cnt_bits) - 1; |
| subdevice->insn_read = cnt_rinsn; |
| subdevice->insn_write = cnt_winsn; |
| |
| /* select 20MHz clock */ |
| outb(3, dev->iobase + 248); |
| |
| /* reset all counters */ |
| outb(0, dev->iobase); |
| outb(0, dev->iobase + 0x20); |
| outb(0, dev->iobase + 0x40); |
| |
| printk(KERN_INFO "comedi%d: " CNT_DRIVER_NAME " attached.\n", |
| dev->minor); |
| return 0; |
| } |
| |
| /*-- detach -----------------------------------------------------------------*/ |
| |
| static int cnt_detach(struct comedi_device *dev) |
| { |
| if (devpriv && devpriv->pcidev) { |
| if (dev->iobase) |
| comedi_pci_disable(devpriv->pcidev); |
| pci_dev_put(devpriv->pcidev); |
| } |
| printk(KERN_INFO "comedi%d: " CNT_DRIVER_NAME " remove\n", |
| dev->minor); |
| return 0; |
| } |
| |
| MODULE_AUTHOR("Comedi http://www.comedi.org"); |
| MODULE_DESCRIPTION("Comedi low-level driver"); |
| MODULE_LICENSE("GPL"); |