2874c5fd28
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Support for the VMIVME-7805 board access to the Universe II bridge.
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*
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* Author: Arthur Benilov <arthur.benilov@iba-group.com>
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* Copyright 2010 Ion Beam Application, Inc.
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/pci.h>
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#include <linux/poll.h>
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#include <linux/io.h>
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#include "vme_vmivme7805.h"
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static int vmic_probe(struct pci_dev *, const struct pci_device_id *);
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static void vmic_remove(struct pci_dev *);
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/** Base address to access FPGA register */
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static void __iomem *vmic_base;
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static const char driver_name[] = "vmivme_7805";
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static const struct pci_device_id vmic_ids[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_VMIC, PCI_DEVICE_ID_VTIMR) },
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{ },
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};
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static struct pci_driver vmic_driver = {
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.name = driver_name,
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.id_table = vmic_ids,
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.probe = vmic_probe,
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.remove = vmic_remove,
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};
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static int vmic_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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int retval;
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u32 data;
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/* Enable the device */
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retval = pci_enable_device(pdev);
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if (retval) {
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dev_err(&pdev->dev, "Unable to enable device\n");
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goto err;
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}
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/* Map Registers */
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retval = pci_request_regions(pdev, driver_name);
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if (retval) {
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dev_err(&pdev->dev, "Unable to reserve resources\n");
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goto err_resource;
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}
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/* Map registers in BAR 0 */
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vmic_base = ioremap_nocache(pci_resource_start(pdev, 0), 16);
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if (!vmic_base) {
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dev_err(&pdev->dev, "Unable to remap CRG region\n");
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retval = -EIO;
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goto err_remap;
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}
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/* Clear the FPGA VME IF contents */
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iowrite32(0, vmic_base + VME_CONTROL);
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/* Clear any initial BERR */
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data = ioread32(vmic_base + VME_CONTROL) & 0x00000FFF;
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data |= BM_VME_CONTROL_BERRST;
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iowrite32(data, vmic_base + VME_CONTROL);
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/* Enable the vme interface and byte swapping */
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data = ioread32(vmic_base + VME_CONTROL) & 0x00000FFF;
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data = data | BM_VME_CONTROL_MASTER_ENDIAN |
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BM_VME_CONTROL_SLAVE_ENDIAN |
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BM_VME_CONTROL_ABLE |
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BM_VME_CONTROL_BERRI |
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BM_VME_CONTROL_BPENA |
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BM_VME_CONTROL_VBENA;
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iowrite32(data, vmic_base + VME_CONTROL);
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return 0;
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err_remap:
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pci_release_regions(pdev);
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err_resource:
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pci_disable_device(pdev);
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err:
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return retval;
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}
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static void vmic_remove(struct pci_dev *pdev)
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{
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iounmap(vmic_base);
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pci_release_regions(pdev);
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pci_disable_device(pdev);
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}
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module_pci_driver(vmic_driver);
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MODULE_DESCRIPTION("VMIVME-7805 board support driver");
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MODULE_AUTHOR("Arthur Benilov <arthur.benilov@iba-group.com>");
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MODULE_LICENSE("GPL");
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