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-/*
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- comedi/drivers/cb_pcidio.c
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- A Comedi driver for PCI-DIO24H & PCI-DIO48H of ComputerBoards (currently MeasurementComputing)
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-
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- COMEDI - Linux Control and Measurement Device Interface
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- Copyright (C) 2000 David A. Schleef <ds@schleef.org>
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-
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- This program is free software; you can redistribute it and/or modify
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- it under the terms of the GNU General Public License as published by
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- the Free Software Foundation; either version 2 of the License, or
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- (at your option) any later version.
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-
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- This program is distributed in the hope that it will be useful,
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- but WITHOUT ANY WARRANTY; without even the implied warranty of
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- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- GNU General Public License for more details.
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-
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- You should have received a copy of the GNU General Public License
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- along with this program; if not, write to the Free Software
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- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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-
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-*/
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-/*
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-Driver: cb_pcidio
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-Description: ComputerBoards' DIO boards with PCI interface
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-Devices: [Measurement Computing] PCI-DIO24 (cb_pcidio), PCI-DIO24H, PCI-DIO48H
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-Author: Yoshiya Matsuzaka
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-Updated: Mon, 29 Oct 2007 15:40:47 +0000
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-Status: experimental
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-
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-This driver has been modified from skel.c of comedi-0.7.70.
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-
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-Configuration Options: not applicable, uses PCI auto config
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-*/
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-
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-/*------------------------------ HEADER FILES ---------------------------------*/
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-#include "../comedidev.h"
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-#include "8255.h"
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-
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-/*-------------------------- MACROS and DATATYPES -----------------------------*/
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-#define PCI_VENDOR_ID_CB 0x1307
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-
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-/*
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- * Board descriptions for two imaginary boards. Describing the
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- * boards in this way is optional, and completely driver-dependent.
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- * Some drivers use arrays such as this, other do not.
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- */
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-struct pcidio_board {
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- const char *name; /* name of the board */
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- int dev_id;
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- int n_8255; /* number of 8255 chips on board */
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-
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- /* indices of base address regions */
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- int pcicontroler_badrindex;
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- int dioregs_badrindex;
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-};
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-
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-static const struct pcidio_board pcidio_boards[] = {
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- {
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- .name = "pci-dio24",
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- .dev_id = 0x0028,
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- .n_8255 = 1,
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- .pcicontroler_badrindex = 1,
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- .dioregs_badrindex = 2,
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- },
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- {
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- .name = "pci-dio24h",
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- .dev_id = 0x0014,
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- .n_8255 = 1,
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- .pcicontroler_badrindex = 1,
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- .dioregs_badrindex = 2,
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- },
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- {
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- .name = "pci-dio48h",
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- .dev_id = 0x000b,
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- .n_8255 = 2,
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- .pcicontroler_badrindex = 0,
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- .dioregs_badrindex = 1,
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- },
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-};
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-
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-static const void *pcidio_find_boardinfo(struct comedi_device *dev,
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- struct pci_dev *pcidev)
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-{
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- const struct pcidio_board *board;
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- int i;
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-
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- for (i = 0; i < ARRAY_SIZE(pcidio_boards); i++) {
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- board = &pcidio_boards[i];
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- if (board->dev_id == pcidev->device)
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- return board;
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- }
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- return NULL;
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-}
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-
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-static int pcidio_attach_pci(struct comedi_device *dev,
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- struct pci_dev *pcidev)
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-{
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- const struct pcidio_board *board;
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- struct comedi_subdevice *s;
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- int i;
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- int ret;
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-
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- comedi_set_hw_dev(dev, &pcidev->dev);
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-
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- board = pcidio_find_boardinfo(dev, pcidev);
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- if (!board)
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- return -ENODEV;
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- dev->board_ptr = board;
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- dev->board_name = board->name;
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-
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- ret = comedi_pci_enable(pcidev, dev->board_name);
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- if (ret)
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- return ret;
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- dev->iobase = pci_resource_start(pcidev, board->dioregs_badrindex);
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-
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- ret = comedi_alloc_subdevices(dev, board->n_8255);
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- if (ret)
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- return ret;
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-
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- for (i = 0; i < board->n_8255; i++) {
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- s = &dev->subdevices[i];
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- ret = subdev_8255_init(dev, s, NULL, dev->iobase + i * 4);
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- if (ret)
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- return ret;
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- }
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-
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- dev_info(dev->class_dev, "%s attached (%d digital i/o channels)\n",
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- dev->board_name, board->n_8255 * 24);
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-
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- return 0;
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-}
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-
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-static void pcidio_detach(struct comedi_device *dev)
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-{
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- const struct pcidio_board *board = comedi_board(dev);
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- struct pci_dev *pcidev = comedi_to_pci_dev(dev);
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- struct comedi_subdevice *s;
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- int i;
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-
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- if (dev->subdevices) {
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- for (i = 0; i < board->n_8255; i++) {
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- s = &dev->subdevices[i];
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- subdev_8255_cleanup(dev, s);
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- }
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- }
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- if (pcidev) {
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- if (dev->iobase)
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- comedi_pci_disable(pcidev);
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- }
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-}
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-
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-static struct comedi_driver cb_pcidio_driver = {
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- .driver_name = "cb_pcidio",
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- .module = THIS_MODULE,
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- .attach_pci = pcidio_attach_pci,
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- .detach = pcidio_detach,
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-};
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-
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-static int __devinit cb_pcidio_pci_probe(struct pci_dev *dev,
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- const struct pci_device_id *ent)
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-{
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- return comedi_pci_auto_config(dev, &cb_pcidio_driver);
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-}
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-
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-static void __devexit cb_pcidio_pci_remove(struct pci_dev *dev)
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-{
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- comedi_pci_auto_unconfig(dev);
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-}
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-
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-static DEFINE_PCI_DEVICE_TABLE(cb_pcidio_pci_table) = {
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- { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0028) },
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- { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x0014) },
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- { PCI_DEVICE(PCI_VENDOR_ID_CB, 0x000b) },
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- { 0 }
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-};
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-MODULE_DEVICE_TABLE(pci, cb_pcidio_pci_table);
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-
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-static struct pci_driver cb_pcidio_pci_driver = {
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- .name = "cb_pcidio",
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- .id_table = cb_pcidio_pci_table,
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- .probe = cb_pcidio_pci_probe,
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- .remove = __devexit_p(cb_pcidio_pci_remove),
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-};
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-module_comedi_pci_driver(cb_pcidio_driver, cb_pcidio_pci_driver);
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-
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-MODULE_AUTHOR("Comedi http://www.comedi.org");
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-MODULE_DESCRIPTION("Comedi low-level driver");
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-MODULE_LICENSE("GPL");
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H Hartley Sweeten