/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2012 Cavium, Inc.
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* Copyright (C) 2009 Wind River Systems,
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* written by Ralf Baechle <ralf@linux-mips.org>
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/io.h>
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#include <linux/edac.h>
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#include <asm/octeon/cvmx.h>
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#include <asm/octeon/cvmx-npi-defs.h>
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#include <asm/octeon/cvmx-pci-defs.h>
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#include <asm/octeon/octeon.h>
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#include "edac_module.h"
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static void octeon_pci_poll(struct edac_pci_ctl_info *pci)
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{
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union cvmx_pci_cfg01 cfg01;
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cfg01.u32 = octeon_npi_read32(CVMX_NPI_PCI_CFG01);
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if (cfg01.s.dpe) { /* Detected parity error */
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edac_pci_handle_pe(pci, pci->ctl_name);
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cfg01.s.dpe = 1; /* Reset */
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octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
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}
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if (cfg01.s.sse) {
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edac_pci_handle_npe(pci, "Signaled System Error");
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cfg01.s.sse = 1; /* Reset */
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octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
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}
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if (cfg01.s.rma) {
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edac_pci_handle_npe(pci, "Received Master Abort");
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cfg01.s.rma = 1; /* Reset */
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octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
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}
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if (cfg01.s.rta) {
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edac_pci_handle_npe(pci, "Received Target Abort");
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cfg01.s.rta = 1; /* Reset */
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octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
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}
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if (cfg01.s.sta) {
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edac_pci_handle_npe(pci, "Signaled Target Abort");
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cfg01.s.sta = 1; /* Reset */
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octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
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}
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if (cfg01.s.mdpe) {
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edac_pci_handle_npe(pci, "Master Data Parity Error");
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cfg01.s.mdpe = 1; /* Reset */
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octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
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}
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}
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static int octeon_pci_probe(struct platform_device *pdev)
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{
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struct edac_pci_ctl_info *pci;
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int res = 0;
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pci = edac_pci_alloc_ctl_info(0, "octeon_pci_err");
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if (!pci)
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return -ENOMEM;
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pci->dev = &pdev->dev;
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platform_set_drvdata(pdev, pci);
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pci->dev_name = dev_name(&pdev->dev);
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pci->mod_name = "octeon-pci";
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pci->ctl_name = "octeon_pci_err";
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pci->edac_check = octeon_pci_poll;
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if (edac_pci_add_device(pci, 0) > 0) {
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pr_err("%s: edac_pci_add_device() failed\n", __func__);
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goto err;
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}
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return 0;
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err:
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edac_pci_free_ctl_info(pci);
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return res;
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}
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static int octeon_pci_remove(struct platform_device *pdev)
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{
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struct edac_pci_ctl_info *pci = platform_get_drvdata(pdev);
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edac_pci_del_device(&pdev->dev);
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edac_pci_free_ctl_info(pci);
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return 0;
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}
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static struct platform_driver octeon_pci_driver = {
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.probe = octeon_pci_probe,
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.remove = octeon_pci_remove,
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.driver = {
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.name = "octeon_pci_edac",
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}
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};
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module_platform_driver(octeon_pci_driver);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
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