| Ralf Baechle | f65aad4 | 2012-10-17 00:39:09 +0200 | [diff] [blame^] | 1 | /* |
| 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 |
| 4 | * for more details. |
| 5 | * |
| 6 | * Copyright (C) 2009 Wind River Systems, |
| 7 | * written by Ralf Baechle <ralf@linux-mips.org> |
| 8 | */ |
| 9 | #include <linux/module.h> |
| 10 | #include <linux/init.h> |
| 11 | #include <linux/slab.h> |
| 12 | #include <linux/io.h> |
| 13 | #include <linux/edac.h> |
| 14 | |
| 15 | #include <asm/octeon/cvmx.h> |
| 16 | #include <asm/octeon/cvmx-npi-defs.h> |
| 17 | #include <asm/octeon/cvmx-pci-defs.h> |
| 18 | #include <asm/octeon/octeon.h> |
| 19 | |
| 20 | #include "edac_core.h" |
| 21 | #include "edac_module.h" |
| 22 | |
| 23 | #define EDAC_MOD_STR "octeon" |
| 24 | |
| 25 | static void co_pci_poll(struct edac_pci_ctl_info *pci) |
| 26 | { |
| 27 | union cvmx_pci_cfg01 cfg01; |
| 28 | |
| 29 | cfg01.u32 = octeon_npi_read32(CVMX_NPI_PCI_CFG01); |
| 30 | if (cfg01.s.dpe) { /* Detected parity error */ |
| 31 | edac_pci_handle_pe(pci, pci->ctl_name); |
| 32 | cfg01.s.dpe = 1; /* Reset */ |
| 33 | octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32); |
| 34 | } |
| 35 | if (cfg01.s.sse) { |
| 36 | edac_pci_handle_npe(pci, "Signaled System Error"); |
| 37 | cfg01.s.sse = 1; /* Reset */ |
| 38 | octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32); |
| 39 | } |
| 40 | if (cfg01.s.rma) { |
| 41 | edac_pci_handle_npe(pci, "Received Master Abort"); |
| 42 | cfg01.s.rma = 1; /* Reset */ |
| 43 | octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32); |
| 44 | } |
| 45 | if (cfg01.s.rta) { |
| 46 | edac_pci_handle_npe(pci, "Received Target Abort"); |
| 47 | cfg01.s.rta = 1; /* Reset */ |
| 48 | octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32); |
| 49 | } |
| 50 | if (cfg01.s.sta) { |
| 51 | edac_pci_handle_npe(pci, "Signaled Target Abort"); |
| 52 | cfg01.s.sta = 1; /* Reset */ |
| 53 | octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32); |
| 54 | } |
| 55 | if (cfg01.s.mdpe) { |
| 56 | edac_pci_handle_npe(pci, "Master Data Parity Error"); |
| 57 | cfg01.s.mdpe = 1; /* Reset */ |
| 58 | octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32); |
| 59 | } |
| 60 | if (cfg01.s.mdpe) { |
| 61 | edac_pci_handle_npe(pci, "Master Data Parity Error"); |
| 62 | cfg01.s.mdpe = 1; /* Reset */ |
| 63 | octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | static int __devinit co_pci_probe(struct platform_device *pdev) |
| 68 | { |
| 69 | struct edac_pci_ctl_info *pci; |
| 70 | int res = 0; |
| 71 | |
| 72 | pci = edac_pci_alloc_ctl_info(0, "octeon_pci_err"); |
| 73 | if (!pci) |
| 74 | return -ENOMEM; |
| 75 | |
| 76 | pci->dev = &pdev->dev; |
| 77 | platform_set_drvdata(pdev, pci); |
| 78 | pci->dev_name = dev_name(&pdev->dev); |
| 79 | |
| 80 | pci->mod_name = "octeon-pci"; |
| 81 | pci->ctl_name = "octeon_pci_err"; |
| 82 | pci->edac_check = co_pci_poll; |
| 83 | |
| 84 | if (edac_pci_add_device(pci, 0) > 0) { |
| 85 | pr_err("%s: edac_pci_add_device() failed\n", __func__); |
| 86 | goto err; |
| 87 | } |
| 88 | |
| 89 | return 0; |
| 90 | |
| 91 | err: |
| 92 | edac_pci_free_ctl_info(pci); |
| 93 | |
| 94 | return res; |
| 95 | } |
| 96 | |
| 97 | static int co_pci_remove(struct platform_device *pdev) |
| 98 | { |
| 99 | struct edac_pci_ctl_info *pci = platform_get_drvdata(pdev); |
| 100 | |
| 101 | edac_pci_del_device(&pdev->dev); |
| 102 | edac_pci_free_ctl_info(pci); |
| 103 | |
| 104 | return 0; |
| 105 | } |
| 106 | |
| 107 | static struct platform_driver co_pci_driver = { |
| 108 | .probe = co_pci_probe, |
| 109 | .remove = co_pci_remove, |
| 110 | .driver = { |
| 111 | .name = "co_pci_edac", |
| 112 | } |
| 113 | }; |
| 114 | |
| 115 | static int __init co_edac_init(void) |
| 116 | { |
| 117 | int ret; |
| 118 | |
| 119 | ret = platform_driver_register(&co_pci_driver); |
| 120 | if (ret) |
| 121 | pr_warning(EDAC_MOD_STR " PCI EDAC failed to register\n"); |
| 122 | |
| 123 | return ret; |
| 124 | } |
| 125 | |
| 126 | static void __exit co_edac_exit(void) |
| 127 | { |
| 128 | platform_driver_unregister(&co_pci_driver); |
| 129 | } |
| 130 | |
| 131 | module_init(co_edac_init); |
| 132 | module_exit(co_edac_exit); |
| 133 | |
| 134 | MODULE_LICENSE("GPL"); |
| 135 | MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>"); |