Staging: vme: VMIVME-7805 board support
VMIVME-7805 board has a special control register that has to be used in
order to activate the VME bus access via the Universe II bridge.
This control register also handles endianess convertion.
Signed-off-by: Arthur Benilov <arthur.benilov@iba-group.com>
Signed-off-by: Vincent Bossier <vincent.bossier@iba-group.com>
Acked-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/staging/vme/boards/vme_vmivme7805.c b/drivers/staging/vme/boards/vme_vmivme7805.c
new file mode 100644
index 0000000..843c9ed
--- /dev/null
+++ b/drivers/staging/vme/boards/vme_vmivme7805.c
@@ -0,0 +1,124 @@
+/*
+ * 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/version.h>
+#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 __init vmic_init(void);
+static int vmic_probe(struct pci_dev *, const struct pci_device_id *);
+static void vmic_remove(struct pci_dev *);
+static void __exit vmic_exit(void);
+
+/** Base address to access FPGA register */
+static void *vmic_base;
+
+static char driver_name[] = "vmivme_7805";
+
+static 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 __init vmic_init(void)
+{
+ return pci_register_driver(&vmic_driver);
+}
+
+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);
+
+}
+
+static void __exit vmic_exit(void)
+{
+ pci_unregister_driver(&vmic_driver);
+}
+
+MODULE_DESCRIPTION("VMIVME-7805 board support driver");
+MODULE_AUTHOR("Arthur Benilov <arthur.benilov@iba-group.com>");
+MODULE_LICENSE("GPL");
+
+module_init(vmic_init);
+module_exit(vmic_exit);
+