ced9017a4f
Removing some boilerplate by using module_pci_driver instead of calling register and unregister in the otherwise empty init/exit functions. Signed-off-by: Peter Huewe <peterhuewe@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
/*
|
|
* UIO Hilscher CIF card driver
|
|
*
|
|
* (C) 2007 Hans J. Koch <hjk@hansjkoch.de>
|
|
* Original code (C) 2005 Benedikt Spranger <b.spranger@linutronix.de>
|
|
*
|
|
* Licensed under GPL version 2 only.
|
|
*
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/uio_driver.h>
|
|
|
|
#include <asm/io.h>
|
|
|
|
#define PLX9030_INTCSR 0x4C
|
|
#define INTSCR_INT1_ENABLE 0x01
|
|
#define INTSCR_INT1_STATUS 0x04
|
|
#define INT1_ENABLED_AND_ACTIVE (INTSCR_INT1_ENABLE | INTSCR_INT1_STATUS)
|
|
|
|
#define PCI_SUBVENDOR_ID_PEP 0x1518
|
|
#define CIF_SUBDEVICE_PROFIBUS 0x430
|
|
#define CIF_SUBDEVICE_DEVICENET 0x432
|
|
|
|
|
|
static irqreturn_t hilscher_handler(int irq, struct uio_info *dev_info)
|
|
{
|
|
void __iomem *plx_intscr = dev_info->mem[0].internal_addr
|
|
+ PLX9030_INTCSR;
|
|
|
|
if ((ioread8(plx_intscr) & INT1_ENABLED_AND_ACTIVE)
|
|
!= INT1_ENABLED_AND_ACTIVE)
|
|
return IRQ_NONE;
|
|
|
|
/* Disable interrupt */
|
|
iowrite8(ioread8(plx_intscr) & ~INTSCR_INT1_ENABLE, plx_intscr);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int hilscher_pci_probe(struct pci_dev *dev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
struct uio_info *info;
|
|
|
|
info = kzalloc(sizeof(struct uio_info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
if (pci_enable_device(dev))
|
|
goto out_free;
|
|
|
|
if (pci_request_regions(dev, "hilscher"))
|
|
goto out_disable;
|
|
|
|
info->mem[0].addr = pci_resource_start(dev, 0);
|
|
if (!info->mem[0].addr)
|
|
goto out_release;
|
|
info->mem[0].internal_addr = pci_ioremap_bar(dev, 0);
|
|
if (!info->mem[0].internal_addr)
|
|
goto out_release;
|
|
|
|
info->mem[0].size = pci_resource_len(dev, 0);
|
|
info->mem[0].memtype = UIO_MEM_PHYS;
|
|
info->mem[1].addr = pci_resource_start(dev, 2);
|
|
info->mem[1].size = pci_resource_len(dev, 2);
|
|
info->mem[1].memtype = UIO_MEM_PHYS;
|
|
switch (id->subdevice) {
|
|
case CIF_SUBDEVICE_PROFIBUS:
|
|
info->name = "CIF_Profibus";
|
|
break;
|
|
case CIF_SUBDEVICE_DEVICENET:
|
|
info->name = "CIF_Devicenet";
|
|
break;
|
|
default:
|
|
info->name = "CIF_???";
|
|
}
|
|
info->version = "0.0.1";
|
|
info->irq = dev->irq;
|
|
info->irq_flags = IRQF_SHARED;
|
|
info->handler = hilscher_handler;
|
|
|
|
if (uio_register_device(&dev->dev, info))
|
|
goto out_unmap;
|
|
|
|
pci_set_drvdata(dev, info);
|
|
|
|
return 0;
|
|
out_unmap:
|
|
iounmap(info->mem[0].internal_addr);
|
|
out_release:
|
|
pci_release_regions(dev);
|
|
out_disable:
|
|
pci_disable_device(dev);
|
|
out_free:
|
|
kfree (info);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static void hilscher_pci_remove(struct pci_dev *dev)
|
|
{
|
|
struct uio_info *info = pci_get_drvdata(dev);
|
|
|
|
uio_unregister_device(info);
|
|
pci_release_regions(dev);
|
|
pci_disable_device(dev);
|
|
pci_set_drvdata(dev, NULL);
|
|
iounmap(info->mem[0].internal_addr);
|
|
|
|
kfree (info);
|
|
}
|
|
|
|
static struct pci_device_id hilscher_pci_ids[] = {
|
|
{
|
|
.vendor = PCI_VENDOR_ID_PLX,
|
|
.device = PCI_DEVICE_ID_PLX_9030,
|
|
.subvendor = PCI_SUBVENDOR_ID_PEP,
|
|
.subdevice = CIF_SUBDEVICE_PROFIBUS,
|
|
},
|
|
{
|
|
.vendor = PCI_VENDOR_ID_PLX,
|
|
.device = PCI_DEVICE_ID_PLX_9030,
|
|
.subvendor = PCI_SUBVENDOR_ID_PEP,
|
|
.subdevice = CIF_SUBDEVICE_DEVICENET,
|
|
},
|
|
{ 0, }
|
|
};
|
|
|
|
static struct pci_driver hilscher_pci_driver = {
|
|
.name = "hilscher",
|
|
.id_table = hilscher_pci_ids,
|
|
.probe = hilscher_pci_probe,
|
|
.remove = hilscher_pci_remove,
|
|
};
|
|
|
|
module_pci_driver(hilscher_pci_driver);
|
|
MODULE_DEVICE_TABLE(pci, hilscher_pci_ids);
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Hans J. Koch, Benedikt Spranger");
|