98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/* Marvell OcteonTx2 CGX driver
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*
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* Copyright (C) 2018 Marvell International Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/acpi.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/pci.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/phy.h>
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#include <linux/of.h>
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#include <linux/of_mdio.h>
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#include <linux/of_net.h>
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#include "cgx.h"
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#define DRV_NAME "octeontx2-cgx"
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#define DRV_STRING "Marvell OcteonTX2 CGX/MAC Driver"
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struct cgx {
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void __iomem *reg_base;
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struct pci_dev *pdev;
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u8 cgx_id;
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};
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/* Supported devices */
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static const struct pci_device_id cgx_id_table[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_CGX) },
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{ 0, } /* end of table */
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};
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MODULE_DEVICE_TABLE(pci, cgx_id_table);
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static int cgx_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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struct device *dev = &pdev->dev;
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struct cgx *cgx;
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int err;
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cgx = devm_kzalloc(dev, sizeof(*cgx), GFP_KERNEL);
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if (!cgx)
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return -ENOMEM;
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cgx->pdev = pdev;
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pci_set_drvdata(pdev, cgx);
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err = pci_enable_device(pdev);
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if (err) {
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dev_err(dev, "Failed to enable PCI device\n");
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pci_set_drvdata(pdev, NULL);
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return err;
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}
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err = pci_request_regions(pdev, DRV_NAME);
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if (err) {
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dev_err(dev, "PCI request regions failed 0x%x\n", err);
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goto err_disable_device;
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}
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/* MAP configuration registers */
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cgx->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
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if (!cgx->reg_base) {
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dev_err(dev, "CGX: Cannot map CSR memory space, aborting\n");
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err = -ENOMEM;
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goto err_release_regions;
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}
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return 0;
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err_release_regions:
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pci_release_regions(pdev);
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err_disable_device:
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pci_disable_device(pdev);
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pci_set_drvdata(pdev, NULL);
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return err;
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}
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static void cgx_remove(struct pci_dev *pdev)
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{
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pci_release_regions(pdev);
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pci_disable_device(pdev);
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pci_set_drvdata(pdev, NULL);
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}
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struct pci_driver cgx_driver = {
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.name = DRV_NAME,
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.id_table = cgx_id_table,
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.probe = cgx_probe,
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.remove = cgx_remove,
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};
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