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145 lines
3.5 KiB
145 lines
3.5 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (C) 2015 Broadcom Corporation |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/pci.h> |
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#include <linux/clk.h> |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/interrupt.h> |
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#include <linux/platform_device.h> |
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#include <linux/of_address.h> |
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#include <linux/of_pci.h> |
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#include <linux/of_irq.h> |
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#include <linux/of_platform.h> |
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#include <linux/phy/phy.h> |
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#include "../pci.h" |
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#include "pcie-iproc.h" |
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static const struct of_device_id iproc_pcie_of_match_table[] = { |
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{ |
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.compatible = "brcm,iproc-pcie", |
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.data = (int *)IPROC_PCIE_PAXB, |
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}, { |
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.compatible = "brcm,iproc-pcie-paxb-v2", |
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.data = (int *)IPROC_PCIE_PAXB_V2, |
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}, { |
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.compatible = "brcm,iproc-pcie-paxc", |
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.data = (int *)IPROC_PCIE_PAXC, |
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}, { |
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.compatible = "brcm,iproc-pcie-paxc-v2", |
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.data = (int *)IPROC_PCIE_PAXC_V2, |
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}, |
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{ /* sentinel */ } |
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}; |
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MODULE_DEVICE_TABLE(of, iproc_pcie_of_match_table); |
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static int iproc_pltfm_pcie_probe(struct platform_device *pdev) |
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{ |
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struct device *dev = &pdev->dev; |
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struct iproc_pcie *pcie; |
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struct device_node *np = dev->of_node; |
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struct resource reg; |
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struct pci_host_bridge *bridge; |
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int ret; |
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bridge = devm_pci_alloc_host_bridge(dev, sizeof(*pcie)); |
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if (!bridge) |
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return -ENOMEM; |
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pcie = pci_host_bridge_priv(bridge); |
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pcie->dev = dev; |
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pcie->type = (enum iproc_pcie_type) of_device_get_match_data(dev); |
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ret = of_address_to_resource(np, 0, ®); |
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if (ret < 0) { |
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dev_err(dev, "unable to obtain controller resources\n"); |
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return ret; |
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} |
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pcie->base = devm_pci_remap_cfgspace(dev, reg.start, |
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resource_size(®)); |
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if (!pcie->base) { |
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dev_err(dev, "unable to map controller registers\n"); |
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return -ENOMEM; |
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} |
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pcie->base_addr = reg.start; |
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if (of_property_read_bool(np, "brcm,pcie-ob")) { |
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u32 val; |
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ret = of_property_read_u32(np, "brcm,pcie-ob-axi-offset", |
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&val); |
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if (ret) { |
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dev_err(dev, |
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"missing brcm,pcie-ob-axi-offset property\n"); |
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return ret; |
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} |
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pcie->ob.axi_offset = val; |
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pcie->need_ob_cfg = true; |
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} |
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/* |
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* DT nodes are not used by all platforms that use the iProc PCIe |
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* core driver. For platforms that require explicit inbound mapping |
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* configuration, "dma-ranges" would have been present in DT |
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*/ |
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pcie->need_ib_cfg = of_property_read_bool(np, "dma-ranges"); |
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/* PHY use is optional */ |
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pcie->phy = devm_phy_optional_get(dev, "pcie-phy"); |
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if (IS_ERR(pcie->phy)) |
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return PTR_ERR(pcie->phy); |
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/* PAXC doesn't support legacy IRQs, skip mapping */ |
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switch (pcie->type) { |
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case IPROC_PCIE_PAXC: |
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case IPROC_PCIE_PAXC_V2: |
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pcie->map_irq = NULL; |
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break; |
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default: |
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break; |
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} |
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ret = iproc_pcie_setup(pcie, &bridge->windows); |
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if (ret) { |
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dev_err(dev, "PCIe controller setup failed\n"); |
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return ret; |
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} |
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platform_set_drvdata(pdev, pcie); |
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return 0; |
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} |
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static int iproc_pltfm_pcie_remove(struct platform_device *pdev) |
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{ |
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struct iproc_pcie *pcie = platform_get_drvdata(pdev); |
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return iproc_pcie_remove(pcie); |
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} |
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static void iproc_pltfm_pcie_shutdown(struct platform_device *pdev) |
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{ |
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struct iproc_pcie *pcie = platform_get_drvdata(pdev); |
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iproc_pcie_shutdown(pcie); |
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} |
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static struct platform_driver iproc_pltfm_pcie_driver = { |
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.driver = { |
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.name = "iproc-pcie", |
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.of_match_table = of_match_ptr(iproc_pcie_of_match_table), |
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}, |
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.probe = iproc_pltfm_pcie_probe, |
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.remove = iproc_pltfm_pcie_remove, |
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.shutdown = iproc_pltfm_pcie_shutdown, |
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}; |
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module_platform_driver(iproc_pltfm_pcie_driver); |
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MODULE_AUTHOR("Ray Jui <[email protected]>"); |
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MODULE_DESCRIPTION("Broadcom iPROC PCIe platform driver"); |
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MODULE_LICENSE("GPL v2");
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