v4.19.13 snapshot.
diff --git a/drivers/mcb/mcb-pci.c b/drivers/mcb/mcb-pci.c
new file mode 100644
index 0000000..c2d69e3
--- /dev/null
+++ b/drivers/mcb/mcb-pci.c
@@ -0,0 +1,136 @@
+/*
+ * MEN Chameleon Bus.
+ *
+ * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de)
+ * Author: Johannes Thumshirn <johannes.thumshirn@men.de>
+ *
+ * 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; version 2 of the License.
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/mcb.h>
+
+#include "mcb-internal.h"
+
+struct priv {
+ struct mcb_bus *bus;
+ phys_addr_t mapbase;
+ void __iomem *base;
+};
+
+static int mcb_pci_get_irq(struct mcb_device *mdev)
+{
+ struct mcb_bus *mbus = mdev->bus;
+ struct device *dev = mbus->carrier;
+ struct pci_dev *pdev = to_pci_dev(dev);
+
+ return pdev->irq;
+}
+
+static int mcb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct resource *res;
+ struct priv *priv;
+ int ret;
+ unsigned long flags;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(struct priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ ret = pci_enable_device(pdev);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to enable PCI device\n");
+ return -ENODEV;
+ }
+ pci_set_master(pdev);
+
+ priv->mapbase = pci_resource_start(pdev, 0);
+ if (!priv->mapbase) {
+ dev_err(&pdev->dev, "No PCI resource\n");
+ ret = -ENODEV;
+ goto out_disable;
+ }
+
+ res = devm_request_mem_region(&pdev->dev, priv->mapbase,
+ CHAM_HEADER_SIZE,
+ KBUILD_MODNAME);
+ if (!res) {
+ dev_err(&pdev->dev, "Failed to request PCI memory\n");
+ ret = -EBUSY;
+ goto out_disable;
+ }
+
+ priv->base = devm_ioremap(&pdev->dev, priv->mapbase, CHAM_HEADER_SIZE);
+ if (!priv->base) {
+ dev_err(&pdev->dev, "Cannot ioremap\n");
+ ret = -ENOMEM;
+ goto out_disable;
+ }
+
+ flags = pci_resource_flags(pdev, 0);
+ if (flags & IORESOURCE_IO) {
+ ret = -ENOTSUPP;
+ dev_err(&pdev->dev,
+ "IO mapped PCI devices are not supported\n");
+ goto out_disable;
+ }
+
+ pci_set_drvdata(pdev, priv);
+
+ priv->bus = mcb_alloc_bus(&pdev->dev);
+ if (IS_ERR(priv->bus)) {
+ ret = PTR_ERR(priv->bus);
+ goto out_disable;
+ }
+
+ priv->bus->get_irq = mcb_pci_get_irq;
+
+ ret = chameleon_parse_cells(priv->bus, priv->mapbase, priv->base);
+ if (ret < 0)
+ goto out_mcb_bus;
+
+ dev_dbg(&pdev->dev, "Found %d cells\n", ret);
+
+ mcb_bus_add_devices(priv->bus);
+
+ return 0;
+
+out_mcb_bus:
+ mcb_release_bus(priv->bus);
+out_disable:
+ pci_disable_device(pdev);
+ return ret;
+}
+
+static void mcb_pci_remove(struct pci_dev *pdev)
+{
+ struct priv *priv = pci_get_drvdata(pdev);
+
+ mcb_release_bus(priv->bus);
+
+ pci_disable_device(pdev);
+}
+
+static const struct pci_device_id mcb_pci_tbl[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_MEN, PCI_DEVICE_ID_MEN_CHAMELEON) },
+ { PCI_DEVICE(PCI_VENDOR_ID_ALTERA, PCI_DEVICE_ID_MEN_CHAMELEON) },
+ { 0 },
+};
+MODULE_DEVICE_TABLE(pci, mcb_pci_tbl);
+
+static struct pci_driver mcb_pci_driver = {
+ .name = "mcb-pci",
+ .id_table = mcb_pci_tbl,
+ .probe = mcb_pci_probe,
+ .remove = mcb_pci_remove,
+};
+
+module_pci_driver(mcb_pci_driver);
+
+MODULE_AUTHOR("Johannes Thumshirn <johannes.thumshirn@men.de>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("MCB over PCI support");