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/*
* COMEDI driver for generic PCI based 8255 digital i/o boards
* Copyright (C) 2012 H Hartley Sweeten <hsweeten@visionengravers.com>
*
* Based on the tested adl_pci7296 driver written by:
* Jon Grierson <jd@renko.co.uk>
* and the experimental cb_pcidio driver written by:
* Yoshiya Matsuzaka
*
* 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: 8255_pci
Description: Generic PCI based 8255 Digital I/O boards
Devices: (ADLink) PCI-7224 [adl_pci-7224] - 24 channels
(ADLink) PCI-7248 [adl_pci-7248] - 48 channels
(ADLink) PCI-7296 [adl_pci-7296] - 96 channels
(Measurement Computing) PCI-DIO24 [cb_pci-dio24] - 24 channels
(Measurement Computing) PCI-DIO24H [cb_pci-dio24h] - 24 channels
(Measurement Computing) PCI-DIO48H [cb_pci-dio48h] - 48 channels
(Measurement Computing) PCI-DIO96H [cb_pci-dio96h] - 96 channels
(National Instruments) PCI-DIO-96 [ni_pci-dio-96] - 96 channels
(National Instruments) PCI-DIO-96B [ni_pci-dio-96b] - 96 channels
(National Instruments) PXI-6508 [ni_pxi-6508] - 96 channels
(National Instruments) PCI-6503 [ni_pci-6503] - 24 channels
(National Instruments) PCI-6503B [ni_pci-6503b] - 24 channels
(National Instruments) PCI-6503X [ni_pci-6503x] - 24 channels
(National Instruments) PXI-6503 [ni_pxi-6503] - 24 channels
Author: H Hartley Sweeten <hsweeten@visionengravers.com>
Updated: Wed, 12 Sep 2012 11:52:01 -0700
Status: untested
Some of these boards also have an 8254 programmable timer/counter
chip. This chip is not currently supported by this driver.
Interrupt support for these boards is also not currently supported.
Configuration Options: not applicable, uses PCI auto config
*/
#include "../comedidev.h"
#include "8255.h"
/*
* PCI Device ID's supported by this driver
*/
#define PCI_DEVICE_ID_ADLINK_PCI7224 0x7224
#define PCI_DEVICE_ID_ADLINK_PCI7248 0x7248
#define PCI_DEVICE_ID_ADLINK_PCI7296 0x7296
/* ComputerBoards is now known as Measurement Computing */
#define PCI_VENDOR_ID_CB 0x1307
#define PCI_DEVICE_ID_CB_PCIDIO48H 0x000b
#define PCI_DEVICE_ID_CB_PCIDIO24H 0x0014
#define PCI_DEVICE_ID_CB_PCIDIO96H 0x0017
#define PCI_DEVICE_ID_CB_PCIDIO24 0x0028
#define PCI_DEVICE_ID_NI_PCIDIO96 0x0160
#define PCI_DEVICE_ID_NI_PCI6503 0x0400
#define PCI_DEVICE_ID_NI_PCI6503B 0x1250
#define PCI_DEVICE_ID_NI_PXI6508 0x13c0
#define PCI_DEVICE_ID_NI_PCIDIO96B 0x1630
#define PCI_DEVICE_ID_NI_PCI6503X 0x17d0
#define PCI_DEVICE_ID_NI_PXI_6503 0x1800
struct pci_8255_boardinfo {
const char *name;
unsigned short vendor;
unsigned short device;
int dio_badr;
int is_mmio;
int n_8255;
};
static const struct pci_8255_boardinfo pci_8255_boards[] = {
{
.name = "adl_pci-7224",
.vendor = PCI_VENDOR_ID_ADLINK,
.device = PCI_DEVICE_ID_ADLINK_PCI7224,
.dio_badr = 2,
.n_8255 = 1,
}, {
.name = "adl_pci-7248",
.vendor = PCI_VENDOR_ID_ADLINK,
.device = PCI_DEVICE_ID_ADLINK_PCI7248,
.dio_badr = 2,
.n_8255 = 2,
}, {
.name = "adl_pci-7296",
.vendor = PCI_VENDOR_ID_ADLINK,
.device = PCI_DEVICE_ID_ADLINK_PCI7296,
.dio_badr = 2,
.n_8255 = 4,
}, {
.name = "cb_pci-dio24",
.vendor = PCI_VENDOR_ID_CB,
.device = PCI_DEVICE_ID_CB_PCIDIO24,
.dio_badr = 2,
.n_8255 = 1,
}, {
.name = "cb_pci-dio24h",
.vendor = PCI_VENDOR_ID_CB,
.device = PCI_DEVICE_ID_CB_PCIDIO24H,
.dio_badr = 2,
.n_8255 = 1,
}, {
.name = "cb_pci-dio48h",
.vendor = PCI_VENDOR_ID_CB,
.device = PCI_DEVICE_ID_CB_PCIDIO48H,
.dio_badr = 1,
.n_8255 = 2,
}, {
.name = "cb_pci-dio96h",
.vendor = PCI_VENDOR_ID_CB,
.device = PCI_DEVICE_ID_CB_PCIDIO96H,
.dio_badr = 2,
.n_8255 = 4,
}, {
.name = "ni_pci-dio-96",
.vendor = PCI_VENDOR_ID_NI,
.device = PCI_DEVICE_ID_NI_PCIDIO96,
.dio_badr = 1,
.is_mmio = 1,
.n_8255 = 4,
}, {
.name = "ni_pci-dio-96b",
.vendor = PCI_VENDOR_ID_NI,
.device = PCI_DEVICE_ID_NI_PCIDIO96B,
.dio_badr = 1,
.is_mmio = 1,
.n_8255 = 4,
}, {
.name = "ni_pxi-6508",
.vendor = PCI_VENDOR_ID_NI,
.device = PCI_DEVICE_ID_NI_PXI6508,
.dio_badr = 1,
.is_mmio = 1,
.n_8255 = 4,
}, {
.name = "ni_pci-6503",
.vendor = PCI_VENDOR_ID_NI,
.device = PCI_DEVICE_ID_NI_PCI6503,
.dio_badr = 1,
.is_mmio = 1,
.n_8255 = 1,
}, {
.name = "ni_pci-6503b",
.vendor = PCI_VENDOR_ID_NI,
.device = PCI_DEVICE_ID_NI_PCI6503B,
.dio_badr = 1,
.is_mmio = 1,
.n_8255 = 1,
}, {
.name = "ni_pci-6503x",
.vendor = PCI_VENDOR_ID_NI,
.device = PCI_DEVICE_ID_NI_PCI6503X,
.dio_badr = 1,
.is_mmio = 1,
.n_8255 = 1,
}, {
.name = "ni_pxi-6503",
.vendor = PCI_VENDOR_ID_NI,
.device = PCI_DEVICE_ID_NI_PXI_6503,
.dio_badr = 1,
.is_mmio = 1,
.n_8255 = 1,
},
};
struct pci_8255_private {
void __iomem *mmio_base;
};
static int pci_8255_mmio(int dir, int port, int data, unsigned long iobase)
{
void __iomem *mmio_base = (void __iomem *)iobase;
if (dir) {
writeb(data, mmio_base + port);
return 0;
} else {
return readb(mmio_base + port);
}
}
static const void *pci_8255_find_boardinfo(struct comedi_device *dev,
struct pci_dev *pcidev)
{
const struct pci_8255_boardinfo *board;
int i;
for (i = 0; i < ARRAY_SIZE(pci_8255_boards); i++) {
board = &pci_8255_boards[i];
if (pcidev->vendor == board->vendor &&
pcidev->device == board->device)
return board;
}
return NULL;
}
static int pci_8255_attach_pci(struct comedi_device *dev,
struct pci_dev *pcidev)
{
const struct pci_8255_boardinfo *board;
struct pci_8255_private *devpriv;
struct comedi_subdevice *s;
resource_size_t iobase;
unsigned long len;
int ret;
int i;
comedi_set_hw_dev(dev, &pcidev->dev);
board = pci_8255_find_boardinfo(dev, pcidev);
if (!board)
return -ENODEV;
dev->board_ptr = board;
dev->board_name = board->name;
ret = alloc_private(dev, sizeof(*devpriv));
if (ret < 0)
return ret;
devpriv = dev->private;
ret = comedi_pci_enable(pcidev, dev->board_name);
if (ret)
return ret;
iobase = pci_resource_start(pcidev, board->dio_badr);
len = pci_resource_len(pcidev, board->dio_badr);
if (board->is_mmio) {
devpriv->mmio_base = ioremap(iobase, len);
if (!devpriv->mmio_base)
return -ENOMEM;
}
dev->iobase = iobase;
/*
* One, two, or four subdevices are setup by this driver depending
* on the number of channels provided by the board. Each subdevice
* has 24 channels supported by the 8255 module.
*/
ret = comedi_alloc_subdevices(dev, board->n_8255);
if (ret)
return ret;
for (i = 0; i < board->n_8255; i++) {
s = &dev->subdevices[i];
if (board->is_mmio) {
iobase = (unsigned long)(devpriv->mmio_base + (i * 4));
ret = subdev_8255_init(dev, s, pci_8255_mmio, iobase);
} else {
iobase = dev->iobase + (i * 4);
ret = subdev_8255_init(dev, s, NULL, iobase);
}
if (ret)
return ret;
}
dev_info(dev->class_dev, "%s attached (%d digital i/o channels)\n",
dev->board_name, board->n_8255 * 24);
return 0;
}
static void pci_8255_detach(struct comedi_device *dev)
{
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
const struct pci_8255_boardinfo *board = comedi_board(dev);
struct pci_8255_private *devpriv = dev->private;
struct comedi_subdevice *s;
int i;
if (!board || !devpriv)
return;
if (dev->subdevices) {
for (i = 0; i < board->n_8255; i++) {
s = &dev->subdevices[i];
subdev_8255_cleanup(dev, s);
}
}
if (pcidev) {
if (devpriv->mmio_base)
iounmap(devpriv->mmio_base);
if (dev->iobase)
comedi_pci_disable(pcidev);
}
}
static struct comedi_driver pci_8255_driver = {
.driver_name = "8255_pci",
.module = THIS_MODULE,
.attach_pci = pci_8255_attach_pci,
.detach = pci_8255_detach,
};
static int __devinit pci_8255_pci_probe(struct pci_dev *dev,
const struct pci_device_id *ent)
{
return comedi_pci_auto_config(dev, &pci_8255_driver);
}
static void __devexit pci_8255_pci_remove(struct pci_dev *dev)
{
comedi_pci_auto_unconfig(dev);
}
static DEFINE_PCI_DEVICE_TABLE(pci_8255_pci_table) = {
{ PCI_DEVICE(PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_ADLINK_PCI7224) },
{ PCI_DEVICE(PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_ADLINK_PCI7248) },
{ PCI_DEVICE(PCI_VENDOR_ID_ADLINK, PCI_DEVICE_ID_ADLINK_PCI7296) },
{ PCI_DEVICE(PCI_VENDOR_ID_CB, PCI_DEVICE_ID_CB_PCIDIO24) },
{ PCI_DEVICE(PCI_VENDOR_ID_CB, PCI_DEVICE_ID_CB_PCIDIO24H) },
{ PCI_DEVICE(PCI_VENDOR_ID_CB, PCI_DEVICE_ID_CB_PCIDIO48H) },
{ PCI_DEVICE(PCI_VENDOR_ID_CB, PCI_DEVICE_ID_CB_PCIDIO96H) },
{ PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PCIDIO96) },
{ PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PCIDIO96B) },
{ PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PXI6508) },
{ PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PCI6503) },
{ PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PCI6503B) },
{ PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PCI6503X) },
{ PCI_DEVICE(PCI_VENDOR_ID_NI, PCI_DEVICE_ID_NI_PXI_6503) },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, pci_8255_pci_table);
static struct pci_driver pci_8255_pci_driver = {
.name = "8255_pci",
.id_table = pci_8255_pci_table,
.probe = pci_8255_pci_probe,
.remove = __devexit_p(pci_8255_pci_remove),
};
module_comedi_pci_driver(pci_8255_driver, pci_8255_pci_driver);
MODULE_DESCRIPTION("COMEDI - Generic PCI based 8255 Digital I/O boards");
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_LICENSE("GPL");
|
