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kernel add
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/*
* Support for the VMIVME-7805 board access to the Universe II bridge.
*
* Author: Arthur Benilov <arthur.benilov@iba-group.com>
* Copyright 2010 Ion Beam Application, Inc.
*
* 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.
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/poll.h>
#include <linux/io.h>
#include "vme_vmivme7805.h"
static int vmic_probe(struct pci_dev *, const struct pci_device_id *);
static void vmic_remove(struct pci_dev *);
/** Base address to access FPGA register */
static void __iomem *vmic_base;
static const char driver_name[] = "vmivme_7805";
static const struct pci_device_id vmic_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_VMIC, PCI_DEVICE_ID_VTIMR) },
{ },
};
static struct pci_driver vmic_driver = {
.name = driver_name,
.id_table = vmic_ids,
.probe = vmic_probe,
.remove = vmic_remove,
};
static int vmic_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
int retval;
u32 data;
/* Enable the device */
retval = pci_enable_device(pdev);
if (retval) {
dev_err(&pdev->dev, "Unable to enable device
");
goto err;
}
/* Map Registers */
retval = pci_request_regions(pdev, driver_name);
if (retval) {
dev_err(&pdev->dev, "Unable to reserve resources
");
goto err_resource;
}
/* Map registers in BAR 0 */
vmic_base = ioremap_nocache(pci_resource_start(pdev, 0), 16);
if (!vmic_base) {
dev_err(&pdev->dev, "Unable to remap CRG region
");
retval = -EIO;
goto err_remap;
}
/* Clear the FPGA VME IF contents */
iowrite32(0, vmic_base + VME_CONTROL);
/* Clear any initial BERR */
data = ioread32(vmic_base + VME_CONTROL) & 0x00000FFF;
data |= BM_VME_CONTROL_BERRST;
iowrite32(data, vmic_base + VME_CONTROL);
/* Enable the vme interface and byte swapping */
data = ioread32(vmic_base + VME_CONTROL) & 0x00000FFF;
data = data | BM_VME_CONTROL_MASTER_ENDIAN |
BM_VME_CONTROL_SLAVE_ENDIAN |
BM_VME_CONTROL_ABLE |
BM_VME_CONTROL_BERRI |
BM_VME_CONTROL_BPENA |
BM_VME_CONTROL_VBENA;
iowrite32(data, vmic_base + VME_CONTROL);
return 0;
err_remap:
pci_release_regions(pdev);
err_resource:
pci_disable_device(pdev);
err:
return retval;
}
static void vmic_remove(struct pci_dev *pdev)
{
iounmap(vmic_base);
pci_release_regions(pdev);
pci_disable_device(pdev);
}
module_pci_driver(vmic_driver);
MODULE_DESCRIPTION("VMIVME-7805 board support driver");
MODULE_AUTHOR("Arthur Benilov <arthur.benilov@iba-group.com>");
MODULE_LICENSE("GPL");
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