Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / vme / boards / vme_vmivme7805.c

diff --git a/kernel/drivers/vme/boards/vme_vmivme7805.c b/kernel/drivers/vme/boards/vme_vmivme7805.c
new file mode 100644 (file)
index 0000000..ac42212
--- /dev/null
+++ b/kernel/drivers/vme/boards/vme_vmivme7805.c
@@ -0,0 +1,110 @@
+/*
+ * 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\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");
+