/* * 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 */ #include #include #include #include #include #include #include "edac_module.h" #define EDAC_MOD_STR "octeon-l2c" static void octeon_l2c_poll_oct1(struct edac_device_ctl_info *l2c) { union cvmx_l2t_err l2t_err, l2t_err_reset; union cvmx_l2d_err l2d_err, l2d_err_reset; l2t_err_reset.u64 = 0; l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR); if (l2t_err.s.sec_err) { edac_device_handle_ce(l2c, 0, 0, "Tag Single bit error (corrected)"); l2t_err_reset.s.sec_err = 1; } if (l2t_err.s.ded_err) { edac_device_handle_ue(l2c, 0, 0, "Tag Double bit error (detected)"); l2t_err_reset.s.ded_err = 1; } if (l2t_err_reset.u64) cvmx_write_csr(CVMX_L2T_ERR, l2t_err_reset.u64); l2d_err_reset.u64 = 0; l2d_err.u64 = cvmx_read_csr(CVMX_L2D_ERR); if (l2d_err.s.sec_err) { edac_device_handle_ce(l2c, 0, 1, "Data Single bit error (corrected)"); l2d_err_reset.s.sec_err = 1; } if (l2d_err.s.ded_err) { edac_device_handle_ue(l2c, 0, 1, "Data Double bit error (detected)"); l2d_err_reset.s.ded_err = 1; } if (l2d_err_reset.u64) cvmx_write_csr(CVMX_L2D_ERR, l2d_err_reset.u64); } static void _octeon_l2c_poll_oct2(struct edac_device_ctl_info *l2c, int tad) { union cvmx_l2c_err_tdtx err_tdtx, err_tdtx_reset; union cvmx_l2c_err_ttgx err_ttgx, err_ttgx_reset; char buf1[64]; char buf2[80]; err_tdtx_reset.u64 = 0; err_tdtx.u64 = cvmx_read_csr(CVMX_L2C_ERR_TDTX(tad)); if (err_tdtx.s.dbe || err_tdtx.s.sbe || err_tdtx.s.vdbe || err_tdtx.s.vsbe) snprintf(buf1, sizeof(buf1), "type:%d, syn:0x%x, way:%d", err_tdtx.s.type, err_tdtx.s.syn, err_tdtx.s.wayidx); if (err_tdtx.s.dbe) { snprintf(buf2, sizeof(buf2), "L2D Double bit error (detected):%s", buf1); err_tdtx_reset.s.dbe = 1; edac_device_handle_ue(l2c, tad, 1, buf2); } if (err_tdtx.s.sbe) { snprintf(buf2, sizeof(buf2), "L2D Single bit error (corrected):%s", buf1); err_tdtx_reset.s.sbe = 1; edac_device_handle_ce(l2c, tad, 1, buf2); } if (err_tdtx.s.vdbe) { snprintf(buf2, sizeof(buf2), "VBF Double bit error (detected):%s", buf1); err_tdtx_reset.s.vdbe = 1; edac_device_handle_ue(l2c, tad, 1, buf2); } if (err_tdtx.s.vsbe) { snprintf(buf2, sizeof(buf2), "VBF Single bit error (corrected):%s", buf1); err_tdtx_reset.s.vsbe = 1; edac_device_handle_ce(l2c, tad, 1, buf2); } if (err_tdtx_reset.u64) cvmx_write_csr(CVMX_L2C_ERR_TDTX(tad), err_tdtx_reset.u64); err_ttgx_reset.u64 = 0; err_ttgx.u64 = cvmx_read_csr(CVMX_L2C_ERR_TTGX(tad)); if (err_ttgx.s.dbe || err_ttgx.s.sbe) snprintf(buf1, sizeof(buf1), "type:%d, syn:0x%x, way:%d", err_ttgx.s.type, err_ttgx.s.syn, err_ttgx.s.wayidx); if (err_ttgx.s.dbe) { snprintf(buf2, sizeof(buf2), "Tag Double bit error (detected):%s", buf1); err_ttgx_reset.s.dbe = 1; edac_device_handle_ue(l2c, tad, 0, buf2); } if (err_ttgx.s.sbe) { snprintf(buf2, sizeof(buf2), "Tag Single bit error (corrected):%s", buf1); err_ttgx_reset.s.sbe = 1; edac_device_handle_ce(l2c, tad, 0, buf2); } if (err_ttgx_reset.u64) cvmx_write_csr(CVMX_L2C_ERR_TTGX(tad), err_ttgx_reset.u64); } static void octeon_l2c_poll_oct2(struct edac_device_ctl_info *l2c) { int i; for (i = 0; i < l2c->nr_instances; i++) _octeon_l2c_poll_oct2(l2c, i); } static int octeon_l2c_probe(struct platform_device *pdev) { struct edac_device_ctl_info *l2c; int num_tads = OCTEON_IS_MODEL(OCTEON_CN68XX) ? 4 : 1; /* 'Tags' are block 0, 'Data' is block 1*/ l2c = edac_device_alloc_ctl_info(0, "l2c", num_tads, "l2c", 2, 0, NULL, 0, edac_device_alloc_index()); if (!l2c) return -ENOMEM; l2c->dev = &pdev->dev; platform_set_drvdata(pdev, l2c); l2c->dev_name = dev_name(&pdev->dev); l2c->mod_name = "octeon-l2c"; l2c->ctl_name = "octeon_l2c_err"; if (OCTEON_IS_OCTEON1PLUS()) { union cvmx_l2t_err l2t_err; union cvmx_l2d_err l2d_err; l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR); l2t_err.s.sec_intena = 0; /* We poll */ l2t_err.s.ded_intena = 0; cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64); l2d_err.u64 = cvmx_read_csr(CVMX_L2D_ERR); l2d_err.s.sec_intena = 0; /* We poll */ l2d_err.s.ded_intena = 0; cvmx_write_csr(CVMX_L2T_ERR, l2d_err.u64); l2c->edac_check = octeon_l2c_poll_oct1; } else { /* OCTEON II */ l2c->edac_check = octeon_l2c_poll_oct2; } if (edac_device_add_device(l2c) > 0) { pr_err("%s: edac_device_add_device() failed\n", __func__); goto err; } return 0; err: edac_device_free_ctl_info(l2c); return -ENXIO; } static int octeon_l2c_remove(struct platform_device *pdev) { struct edac_device_ctl_info *l2c = platform_get_drvdata(pdev); edac_device_del_device(&pdev->dev); edac_device_free_ctl_info(l2c); return 0; } static struct platform_driver octeon_l2c_driver = { .probe = octeon_l2c_probe, .remove = octeon_l2c_remove, .driver = { .name = "octeon_l2c_edac", } }; module_platform_driver(octeon_l2c_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Ralf Baechle ");