1 files changed, 157 insertions, 0 deletions

diff --git a/drivers/pci/controller/pcie-iproc-platform.c b/drivers/pci/controller/pcie-iproc-platform.c
new file mode 100644
index 000000000000..f30f5f3fb5c1
--- /dev/null
+++ b/drivers/pci/controller/pcie-iproc-platform.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2015 Broadcom Corporation
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/of_address.h>
+#include <linux/of_pci.h>
+#include <linux/of_irq.h>
+#include <linux/of_platform.h>
+#include <linux/phy/phy.h>
+
+#include "../pci.h"
+#include "pcie-iproc.h"
+
+static const struct of_device_id iproc_pcie_of_match_table[] = {
+        {
+                .compatible = "brcm,iproc-pcie",
+                .data = (int *)IPROC_PCIE_PAXB,
+        }, {
+                .compatible = "brcm,iproc-pcie-paxb-v2",
+                .data = (int *)IPROC_PCIE_PAXB_V2,
+        }, {
+                .compatible = "brcm,iproc-pcie-paxc",
+                .data = (int *)IPROC_PCIE_PAXC,
+        }, {
+                .compatible = "brcm,iproc-pcie-paxc-v2",
+                .data = (int *)IPROC_PCIE_PAXC_V2,
+        },
+        { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, iproc_pcie_of_match_table);
+
+static int iproc_pcie_pltfm_probe(struct platform_device *pdev)
+{
+        struct device *dev = &pdev->dev;
+        struct iproc_pcie *pcie;
+        struct device_node *np = dev->of_node;
+        struct resource reg;
+        resource_size_t iobase = 0;
+        LIST_HEAD(resources);
+        struct pci_host_bridge *bridge;
+        int ret;
+
+        bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie));
+        if (!bridge)
+                return -ENOMEM;
+
+        pcie = pci_host_bridge_priv(bridge);
+
+        pcie->dev = dev;
+        pcie->type = (enum iproc_pcie_type) of_device_get_match_data(dev);
+
+        ret = of_address_to_resource(np, 0, &reg);
+        if (ret < 0) {
+                dev_err(dev, "unable to obtain controller resources\n");
+                return ret;
+        }
+
+        pcie->base = devm_pci_remap_cfgspace(dev, reg.start,
+                                             resource_size(&reg));
+        if (!pcie->base) {
+                dev_err(dev, "unable to map controller registers\n");
+                return -ENOMEM;
+        }
+        pcie->base_addr = reg.start;
+
+        if (of_property_read_bool(np, "brcm,pcie-ob")) {
+                u32 val;
+
+                ret = of_property_read_u32(np, "brcm,pcie-ob-axi-offset",
+                                           &val);
+                if (ret) {
+                        dev_err(dev,
+                                "missing brcm,pcie-ob-axi-offset property\n");
+                        return ret;
+                }
+                pcie->ob.axi_offset = val;
+                pcie->need_ob_cfg = true;
+        }
+
+        /*
+         * DT nodes are not used by all platforms that use the iProc PCIe
+         * core driver. For platforms that require explict inbound mapping
+         * configuration, "dma-ranges" would have been present in DT
+         */
+        pcie->need_ib_cfg = of_property_read_bool(np, "dma-ranges");
+
+        /* PHY use is optional */
+        pcie->phy = devm_phy_get(dev, "pcie-phy");
+        if (IS_ERR(pcie->phy)) {
+                if (PTR_ERR(pcie->phy) == -EPROBE_DEFER)
+                        return -EPROBE_DEFER;
+                pcie->phy = NULL;
+        }
+
+        ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff, &resources,
+                                                    &iobase);
+        if (ret) {
+                dev_err(dev, "unable to get PCI host bridge resources\n");
+                return ret;
+        }
+
+        /* PAXC doesn't support legacy IRQs, skip mapping */
+        switch (pcie->type) {
+        case IPROC_PCIE_PAXC:
+        case IPROC_PCIE_PAXC_V2:
+                break;
+        default:
+                pcie->map_irq = of_irq_parse_and_map_pci;
+        }
+
+        ret = iproc_pcie_setup(pcie, &resources);
+        if (ret) {
+                dev_err(dev, "PCIe controller setup failed\n");
+                pci_free_resource_list(&resources);
+                return ret;
+        }
+
+        platform_set_drvdata(pdev, pcie);
+        return 0;
+}
+
+static int iproc_pcie_pltfm_remove(struct platform_device *pdev)
+{
+        struct iproc_pcie *pcie = platform_get_drvdata(pdev);
+
+        return iproc_pcie_remove(pcie);
+}
+
+static void iproc_pcie_pltfm_shutdown(struct platform_device *pdev)
+{
+        struct iproc_pcie *pcie = platform_get_drvdata(pdev);
+
+        iproc_pcie_shutdown(pcie);
+}
+
+static struct platform_driver iproc_pcie_pltfm_driver = {
+        .driver = {
+                .name = "iproc-pcie",
+                .of_match_table = of_match_ptr(iproc_pcie_of_match_table),
+        },
+        .probe = iproc_pcie_pltfm_probe,
+        .remove = iproc_pcie_pltfm_remove,
+        .shutdown = iproc_pcie_pltfm_shutdown,
+};
+module_platform_driver(iproc_pcie_pltfm_driver);
+
+MODULE_AUTHOR("Ray Jui <rjui@broadcom.com>");
+MODULE_DESCRIPTION("Broadcom iPROC PCIe platform driver");
+MODULE_LICENSE("GPL v2");