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