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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/pci/controller/pcie-iproc-platform.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/pci/controller/pcie-iproc-platform.c')
-rw-r--r--drivers/pci/controller/pcie-iproc-platform.c145
1 files changed, 145 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 000000000..538115246
--- /dev/null
+++ b/drivers/pci/controller/pcie-iproc-platform.c
@@ -0,0 +1,145 @@
+// 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_pltfm_pcie_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct iproc_pcie *pcie;
+ struct device_node *np = dev->of_node;
+ struct resource reg;
+ 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 explicit 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_optional_get(dev, "pcie-phy");
+ if (IS_ERR(pcie->phy))
+ return PTR_ERR(pcie->phy);
+
+ /* PAXC doesn't support legacy IRQs, skip mapping */
+ switch (pcie->type) {
+ case IPROC_PCIE_PAXC:
+ case IPROC_PCIE_PAXC_V2:
+ pcie->map_irq = NULL;
+ break;
+ default:
+ break;
+ }
+
+ ret = iproc_pcie_setup(pcie, &bridge->windows);
+ if (ret) {
+ dev_err(dev, "PCIe controller setup failed\n");
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, pcie);
+ return 0;
+}
+
+static int iproc_pltfm_pcie_remove(struct platform_device *pdev)
+{
+ struct iproc_pcie *pcie = platform_get_drvdata(pdev);
+
+ return iproc_pcie_remove(pcie);
+}
+
+static void iproc_pltfm_pcie_shutdown(struct platform_device *pdev)
+{
+ struct iproc_pcie *pcie = platform_get_drvdata(pdev);
+
+ iproc_pcie_shutdown(pcie);
+}
+
+static struct platform_driver iproc_pltfm_pcie_driver = {
+ .driver = {
+ .name = "iproc-pcie",
+ .of_match_table = of_match_ptr(iproc_pcie_of_match_table),
+ },
+ .probe = iproc_pltfm_pcie_probe,
+ .remove = iproc_pltfm_pcie_remove,
+ .shutdown = iproc_pltfm_pcie_shutdown,
+};
+module_platform_driver(iproc_pltfm_pcie_driver);
+
+MODULE_AUTHOR("Ray Jui <rjui@broadcom.com>");
+MODULE_DESCRIPTION("Broadcom iPROC PCIe platform driver");
+MODULE_LICENSE("GPL v2");