mirror of https://gitee.com/openkylin/linux.git
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/*
|
|
* 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 DEFINE_PCI_DEVICE_TABLE(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\n");
|
|
goto err;
|
|
}
|
|
|
|
/* Map Registers */
|
|
retval = pci_request_regions(pdev, driver_name);
|
|
if (retval) {
|
|
dev_err(&pdev->dev, "Unable to reserve resources\n");
|
|
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\n");
|
|
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");
|
|
|