2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 2012 Cavium, Inc.
7 * Copyright (C) 2009 Wind River Systems,
8 * written by Ralf Baechle <ralf@linux-mips.org>
10 #include <linux/module.h>
11 #include <linux/init.h>
12 #include <linux/slab.h>
14 #include <linux/edac.h>
16 #include <asm/octeon/cvmx.h>
17 #include <asm/octeon/cvmx-npi-defs.h>
18 #include <asm/octeon/cvmx-pci-defs.h>
19 #include <asm/octeon/octeon.h>
21 #include "edac_core.h"
22 #include "edac_module.h"
24 static void octeon_pci_poll(struct edac_pci_ctl_info *pci)
26 union cvmx_pci_cfg01 cfg01;
28 cfg01.u32 = octeon_npi_read32(CVMX_NPI_PCI_CFG01);
29 if (cfg01.s.dpe) { /* Detected parity error */
30 edac_pci_handle_pe(pci, pci->ctl_name);
31 cfg01.s.dpe = 1; /* Reset */
32 octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
35 edac_pci_handle_npe(pci, "Signaled System Error");
36 cfg01.s.sse = 1; /* Reset */
37 octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
40 edac_pci_handle_npe(pci, "Received Master Abort");
41 cfg01.s.rma = 1; /* Reset */
42 octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
45 edac_pci_handle_npe(pci, "Received Target Abort");
46 cfg01.s.rta = 1; /* Reset */
47 octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
50 edac_pci_handle_npe(pci, "Signaled Target Abort");
51 cfg01.s.sta = 1; /* Reset */
52 octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
55 edac_pci_handle_npe(pci, "Master Data Parity Error");
56 cfg01.s.mdpe = 1; /* Reset */
57 octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
61 static int octeon_pci_probe(struct platform_device *pdev)
63 struct edac_pci_ctl_info *pci;
66 pci = edac_pci_alloc_ctl_info(0, "octeon_pci_err");
70 pci->dev = &pdev->dev;
71 platform_set_drvdata(pdev, pci);
72 pci->dev_name = dev_name(&pdev->dev);
74 pci->mod_name = "octeon-pci";
75 pci->ctl_name = "octeon_pci_err";
76 pci->edac_check = octeon_pci_poll;
78 if (edac_pci_add_device(pci, 0) > 0) {
79 pr_err("%s: edac_pci_add_device() failed\n", __func__);
86 edac_pci_free_ctl_info(pci);
91 static int octeon_pci_remove(struct platform_device *pdev)
93 struct edac_pci_ctl_info *pci = platform_get_drvdata(pdev);
95 edac_pci_del_device(&pdev->dev);
96 edac_pci_free_ctl_info(pci);
101 static struct platform_driver octeon_pci_driver = {
102 .probe = octeon_pci_probe,
103 .remove = octeon_pci_remove,
105 .name = "octeon_pci_edac",
108 module_platform_driver(octeon_pci_driver);
110 MODULE_LICENSE("GPL");
111 MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");