/* * Freescale MPC85xx Memory Controller kernel module * * Parts Copyrighted (c) 2013 by Freescale Semiconductor, Inc. * * Author: Dave Jiang * * 2006-2007 (c) MontaVista Software, Inc. This file is licensed under * the terms of the GNU General Public License version 2. This program * is licensed "as is" without any warranty of any kind, whether express * or implied. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include "edac_module.h" #include "edac_core.h" #include "mpc85xx_edac.h" #include "fsl_ddr_edac.h" static int edac_dev_idx; #ifdef CONFIG_PCI static int edac_pci_idx; #endif /* * PCI Err defines */ #ifdef CONFIG_PCI static u32 orig_pci_err_cap_dr; static u32 orig_pci_err_en; #endif static u32 orig_l2_err_disable; /**************************** PCI Err device ***************************/ #ifdef CONFIG_PCI static void mpc85xx_pci_check(struct edac_pci_ctl_info *pci) { struct mpc85xx_pci_pdata *pdata = pci->pvt_info; u32 err_detect; err_detect = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR); /* master aborts can happen during PCI config cycles */ if (!(err_detect & ~(PCI_EDE_MULTI_ERR | PCI_EDE_MST_ABRT))) { out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, err_detect); return; } pr_err("PCI error(s) detected\n"); pr_err("PCI/X ERR_DR register: %#08x\n", err_detect); pr_err("PCI/X ERR_ATTRIB register: %#08x\n", in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ATTRIB)); pr_err("PCI/X ERR_ADDR register: %#08x\n", in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR)); pr_err("PCI/X ERR_EXT_ADDR register: %#08x\n", in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EXT_ADDR)); pr_err("PCI/X ERR_DL register: %#08x\n", in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DL)); pr_err("PCI/X ERR_DH register: %#08x\n", in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DH)); /* clear error bits */ out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, err_detect); if (err_detect & PCI_EDE_PERR_MASK) edac_pci_handle_pe(pci, pci->ctl_name); if ((err_detect & ~PCI_EDE_MULTI_ERR) & ~PCI_EDE_PERR_MASK) edac_pci_handle_npe(pci, pci->ctl_name); } static void mpc85xx_pcie_check(struct edac_pci_ctl_info *pci) { struct mpc85xx_pci_pdata *pdata = pci->pvt_info; u32 err_detect, err_cap_stat; err_detect = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR); err_cap_stat = in_be32(pdata->pci_vbase + MPC85XX_PCI_GAS_TIMR); pr_err("PCIe error(s) detected\n"); pr_err("PCIe ERR_DR register: 0x%08x\n", err_detect); pr_err("PCIe ERR_CAP_STAT register: 0x%08x\n", err_cap_stat); pr_err("PCIe ERR_CAP_R0 register: 0x%08x\n", in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R0)); pr_err("PCIe ERR_CAP_R1 register: 0x%08x\n", in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R1)); pr_err("PCIe ERR_CAP_R2 register: 0x%08x\n", in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R2)); pr_err("PCIe ERR_CAP_R3 register: 0x%08x\n", in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R3)); /* clear error bits */ out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, err_detect); /* reset error capture */ out_be32(pdata->pci_vbase + MPC85XX_PCI_GAS_TIMR, err_cap_stat | 0x1); } static int mpc85xx_pcie_find_capability(struct device_node *np) { struct pci_controller *hose; if (!np) return -EINVAL; hose = pci_find_hose_for_OF_device(np); return early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP); } static irqreturn_t mpc85xx_pci_isr(int irq, void *dev_id) { struct edac_pci_ctl_info *pci = dev_id; struct mpc85xx_pci_pdata *pdata = pci->pvt_info; u32 err_detect; err_detect = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR); if (!err_detect) return IRQ_NONE; if (pdata->is_pcie) mpc85xx_pcie_check(pci); else mpc85xx_pci_check(pci); return IRQ_HANDLED; } static int mpc85xx_pci_err_probe(struct platform_device *op) { struct edac_pci_ctl_info *pci; struct mpc85xx_pci_pdata *pdata; struct mpc85xx_edac_pci_plat_data *plat_data; struct device_node *of_node; struct resource r; int res = 0; if (!devres_open_group(&op->dev, mpc85xx_pci_err_probe, GFP_KERNEL)) return -ENOMEM; pci = edac_pci_alloc_ctl_info(sizeof(*pdata), "mpc85xx_pci_err"); if (!pci) return -ENOMEM; /* make sure error reporting method is sane */ switch (edac_op_state) { case EDAC_OPSTATE_POLL: case EDAC_OPSTATE_INT: break; default: edac_op_state = EDAC_OPSTATE_INT; break; } pdata = pci->pvt_info; pdata->name = "mpc85xx_pci_err"; pdata->irq = NO_IRQ; plat_data = op->dev.platform_data; if (!plat_data) { dev_err(&op->dev, "no platform data"); res = -ENXIO; goto err; } of_node = plat_data->of_node; if (mpc85xx_pcie_find_capability(of_node) > 0) pdata->is_pcie = true; dev_set_drvdata(&op->dev, pci); pci->dev = &op->dev; pci->mod_name = EDAC_MOD_STR; pci->ctl_name = pdata->name; pci->dev_name = dev_name(&op->dev); if (edac_op_state == EDAC_OPSTATE_POLL) { if (pdata->is_pcie) pci->edac_check = mpc85xx_pcie_check; else pci->edac_check = mpc85xx_pci_check; } pdata->edac_idx = edac_pci_idx++; res = of_address_to_resource(of_node, 0, &r); if (res) { pr_err("%s: Unable to get resource for PCI err regs\n", __func__); goto err; } /* we only need the error registers */ r.start += 0xe00; if (!devm_request_mem_region(&op->dev, r.start, resource_size(&r), pdata->name)) { pr_err("%s: Error while requesting mem region\n", __func__); res = -EBUSY; goto err; } pdata->pci_vbase = devm_ioremap(&op->dev, r.start, resource_size(&r)); if (!pdata->pci_vbase) { pr_err("%s: Unable to setup PCI err regs\n", __func__); res = -ENOMEM; goto err; } if (pdata->is_pcie) { orig_pci_err_cap_dr = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR); out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR, ~0); orig_pci_err_en = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN); out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, 0); } else { orig_pci_err_cap_dr = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR); /* PCI master abort is expected during config cycles */ out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR, 0x40); orig_pci_err_en = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN); /* disable master abort reporting */ out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, ~0x40); } /* clear error bits */ out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, ~0); /* reset error capture */ out_be32(pdata->pci_vbase + MPC85XX_PCI_GAS_TIMR, 0x1); if (edac_pci_add_device(pci, pdata->edac_idx) > 0) { edac_dbg(3, "failed edac_pci_add_device()\n"); goto err; } if (edac_op_state == EDAC_OPSTATE_INT) { pdata->irq = irq_of_parse_and_map(of_node, 0); res = devm_request_irq(&op->dev, pdata->irq, mpc85xx_pci_isr, IRQF_SHARED, "[EDAC] PCI err", pci); if (res < 0) { pr_err("%s: Unable to request irq %d for MPC85xx PCI err\n", __func__, pdata->irq); irq_dispose_mapping(pdata->irq); res = -ENODEV; goto err2; } pr_info(EDAC_MOD_STR " acquired irq %d for PCI Err\n", pdata->irq); } if (pdata->is_pcie) { /* * Enable all PCIe error interrupt & error detect except invalid * PEX_CONFIG_ADDR/PEX_CONFIG_DATA access interrupt generation * enable bit and invalid PEX_CONFIG_ADDR/PEX_CONFIG_DATA access * detection enable bit. Because PCIe bus code to initialize and * configure these PCIe devices on booting will use some invalid * PEX_CONFIG_ADDR/PEX_CONFIG_DATA, edac driver prints the much * notice information. So disable this detect to fix ugly print. */ out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, ~0 & ~PEX_ERR_ICCAIE_EN_BIT); out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR, 0 | PEX_ERR_ICCAD_DISR_BIT); } devres_remove_group(&op->dev, mpc85xx_pci_err_probe); edac_dbg(3, "success\n"); pr_info(EDAC_MOD_STR " PCI err registered\n"); return 0; err2: edac_pci_del_device(&op->dev); err: edac_pci_free_ctl_info(pci); devres_release_group(&op->dev, mpc85xx_pci_err_probe); return res; } static const struct platform_device_id mpc85xx_pci_err_match[] = { { .name = "mpc85xx-pci-edac" }, {} }; static struct platform_driver mpc85xx_pci_err_driver = { .probe = mpc85xx_pci_err_probe, .id_table = mpc85xx_pci_err_match, .driver = { .name = "mpc85xx_pci_err", .suppress_bind_attrs = true, }, }; #endif /* CONFIG_PCI */ /**************************** L2 Err device ***************************/ /************************ L2 SYSFS parts ***********************************/ static ssize_t mpc85xx_l2_inject_data_hi_show(struct edac_device_ctl_info *edac_dev, char *data) { struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info; return sprintf(data, "0x%08x", in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJHI)); } static ssize_t mpc85xx_l2_inject_data_lo_show(struct edac_device_ctl_info *edac_dev, char *data) { struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info; return sprintf(data, "0x%08x", in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJLO)); } static ssize_t mpc85xx_l2_inject_ctrl_show(struct edac_device_ctl_info *edac_dev, char *data) { struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info; return sprintf(data, "0x%08x", in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJCTL)); } static ssize_t mpc85xx_l2_inject_data_hi_store(struct edac_device_ctl_info *edac_dev, const char *data, size_t count) { struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info; if (isdigit(*data)) { out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJHI, simple_strtoul(data, NULL, 0)); return count; } return 0; } static ssize_t mpc85xx_l2_inject_data_lo_store(struct edac_device_ctl_info *edac_dev, const char *data, size_t count) { struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info; if (isdigit(*data)) { out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJLO, simple_strtoul(data, NULL, 0)); return count; } return 0; } static ssize_t mpc85xx_l2_inject_ctrl_store(struct edac_device_ctl_info *edac_dev, const char *data, size_t count) { struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info; if (isdigit(*data)) { out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJCTL, simple_strtoul(data, NULL, 0)); return count; } return 0; } static struct edac_dev_sysfs_attribute mpc85xx_l2_sysfs_attributes[] = { { .attr = { .name = "inject_data_hi", .mode = (S_IRUGO | S_IWUSR) }, .show = mpc85xx_l2_inject_data_hi_show, .store = mpc85xx_l2_inject_data_hi_store}, { .attr = { .name = "inject_data_lo", .mode = (S_IRUGO | S_IWUSR) }, .show = mpc85xx_l2_inject_data_lo_show, .store = mpc85xx_l2_inject_data_lo_store}, { .attr = { .name = "inject_ctrl", .mode = (S_IRUGO | S_IWUSR) }, .show = mpc85xx_l2_inject_ctrl_show, .store = mpc85xx_l2_inject_ctrl_store}, /* End of list */ { .attr = {.name = NULL} } }; static void mpc85xx_set_l2_sysfs_attributes(struct edac_device_ctl_info *edac_dev) { edac_dev->sysfs_attributes = mpc85xx_l2_sysfs_attributes; } /***************************** L2 ops ***********************************/ static void mpc85xx_l2_check(struct edac_device_ctl_info *edac_dev) { struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info; u32 err_detect; err_detect = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET); if (!(err_detect & L2_EDE_MASK)) return; pr_err("ECC Error in CPU L2 cache\n"); pr_err("L2 Error Detect Register: 0x%08x\n", err_detect); pr_err("L2 Error Capture Data High Register: 0x%08x\n", in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTDATAHI)); pr_err("L2 Error Capture Data Lo Register: 0x%08x\n", in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTDATALO)); pr_err("L2 Error Syndrome Register: 0x%08x\n", in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTECC)); pr_err("L2 Error Attributes Capture Register: 0x%08x\n", in_be32(pdata->l2_vbase + MPC85XX_L2_ERRATTR)); pr_err("L2 Error Address Capture Register: 0x%08x\n", in_be32(pdata->l2_vbase + MPC85XX_L2_ERRADDR)); /* clear error detect register */ out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET, err_detect); if (err_detect & L2_EDE_CE_MASK) edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name); if (err_detect & L2_EDE_UE_MASK) edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name); } static irqreturn_t mpc85xx_l2_isr(int irq, void *dev_id) { struct edac_device_ctl_info *edac_dev = dev_id; struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info; u32 err_detect; err_detect = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET); if (!(err_detect & L2_EDE_MASK)) return IRQ_NONE; mpc85xx_l2_check(edac_dev); return IRQ_HANDLED; } static int mpc85xx_l2_err_probe(struct platform_device *op) { struct edac_device_ctl_info *edac_dev; struct mpc85xx_l2_pdata *pdata; struct resource r; int res; if (!devres_open_group(&op->dev, mpc85xx_l2_err_probe, GFP_KERNEL)) return -ENOMEM; edac_dev = edac_device_alloc_ctl_info(sizeof(*pdata), "cpu", 1, "L", 1, 2, NULL, 0, edac_dev_idx); if (!edac_dev) { devres_release_group(&op->dev, mpc85xx_l2_err_probe); return -ENOMEM; } pdata = edac_dev->pvt_info; pdata->name = "mpc85xx_l2_err"; pdata->irq = NO_IRQ; edac_dev->dev = &op->dev; dev_set_drvdata(edac_dev->dev, edac_dev); edac_dev->ctl_name = pdata->name; edac_dev->dev_name = pdata->name; res = of_address_to_resource(op->dev.of_node, 0, &r); if (res) { pr_err("%s: Unable to get resource for L2 err regs\n", __func__); goto err; } /* we only need the error registers */ r.start += 0xe00; if (!devm_request_mem_region(&op->dev, r.start, resource_size(&r), pdata->name)) { pr_err("%s: Error while requesting mem region\n", __func__); res = -EBUSY; goto err; } pdata->l2_vbase = devm_ioremap(&op->dev, r.start, resource_size(&r)); if (!pdata->l2_vbase) { pr_err("%s: Unable to setup L2 err regs\n", __func__); res = -ENOMEM; goto err; } out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET, ~0); orig_l2_err_disable = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS); /* clear the err_dis */ out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS, 0); edac_dev->mod_name = EDAC_MOD_STR; if (edac_op_state == EDAC_OPSTATE_POLL) edac_dev->edac_check = mpc85xx_l2_check; mpc85xx_set_l2_sysfs_attributes(edac_dev); pdata->edac_idx = edac_dev_idx++; if (edac_device_add_device(edac_dev) > 0) { edac_dbg(3, "failed edac_device_add_device()\n"); goto err; } if (edac_op_state == EDAC_OPSTATE_INT) { pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0); res = devm_request_irq(&op->dev, pdata->irq, mpc85xx_l2_isr, IRQF_SHARED, "[EDAC] L2 err", edac_dev); if (res < 0) { pr_err("%s: Unable to request irq %d for MPC85xx L2 err\n", __func__, pdata->irq); irq_dispose_mapping(pdata->irq); res = -ENODEV; goto err2; } pr_info(EDAC_MOD_STR " acquired irq %d for L2 Err\n", pdata->irq); edac_dev->op_state = OP_RUNNING_INTERRUPT; out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINTEN, L2_EIE_MASK); } devres_remove_group(&op->dev, mpc85xx_l2_err_probe); edac_dbg(3, "success\n"); pr_info(EDAC_MOD_STR " L2 err registered\n"); return 0; err2: edac_device_del_device(&op->dev); err: devres_release_group(&op->dev, mpc85xx_l2_err_probe); edac_device_free_ctl_info(edac_dev); return res; } static int mpc85xx_l2_err_remove(struct platform_device *op) { struct edac_device_ctl_info *edac_dev = dev_get_drvdata(&op->dev); struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info; edac_dbg(0, "\n"); if (edac_op_state == EDAC_OPSTATE_INT) { out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINTEN, 0); irq_dispose_mapping(pdata->irq); } out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS, orig_l2_err_disable); edac_device_del_device(&op->dev); edac_device_free_ctl_info(edac_dev); return 0; } static const struct of_device_id mpc85xx_l2_err_of_match[] = { /* deprecate the fsl,85.. forms in the future, 2.6.30? */ { .compatible = "fsl,8540-l2-cache-controller", }, { .compatible = "fsl,8541-l2-cache-controller", }, { .compatible = "fsl,8544-l2-cache-controller", }, { .compatible = "fsl,8548-l2-cache-controller", }, { .compatible = "fsl,8555-l2-cache-controller", }, { .compatible = "fsl,8568-l2-cache-controller", }, { .compatible = "fsl,mpc8536-l2-cache-controller", }, { .compatible = "fsl,mpc8540-l2-cache-controller", }, { .compatible = "fsl,mpc8541-l2-cache-controller", }, { .compatible = "fsl,mpc8544-l2-cache-controller", }, { .compatible = "fsl,mpc8548-l2-cache-controller", }, { .compatible = "fsl,mpc8555-l2-cache-controller", }, { .compatible = "fsl,mpc8560-l2-cache-controller", }, { .compatible = "fsl,mpc8568-l2-cache-controller", }, { .compatible = "fsl,mpc8569-l2-cache-controller", }, { .compatible = "fsl,mpc8572-l2-cache-controller", }, { .compatible = "fsl,p1020-l2-cache-controller", }, { .compatible = "fsl,p1021-l2-cache-controller", }, { .compatible = "fsl,p2020-l2-cache-controller", }, {}, }; MODULE_DEVICE_TABLE(of, mpc85xx_l2_err_of_match); static struct platform_driver mpc85xx_l2_err_driver = { .probe = mpc85xx_l2_err_probe, .remove = mpc85xx_l2_err_remove, .driver = { .name = "mpc85xx_l2_err", .of_match_table = mpc85xx_l2_err_of_match, }, }; static const struct of_device_id mpc85xx_mc_err_of_match[] = { /* deprecate the fsl,85.. forms in the future, 2.6.30? */ { .compatible = "fsl,8540-memory-controller", }, { .compatible = "fsl,8541-memory-controller", }, { .compatible = "fsl,8544-memory-controller", }, { .compatible = "fsl,8548-memory-controller", }, { .compatible = "fsl,8555-memory-controller", }, { .compatible = "fsl,8568-memory-controller", }, { .compatible = "fsl,mpc8536-memory-controller", }, { .compatible = "fsl,mpc8540-memory-controller", }, { .compatible = "fsl,mpc8541-memory-controller", }, { .compatible = "fsl,mpc8544-memory-controller", }, { .compatible = "fsl,mpc8548-memory-controller", }, { .compatible = "fsl,mpc8555-memory-controller", }, { .compatible = "fsl,mpc8560-memory-controller", }, { .compatible = "fsl,mpc8568-memory-controller", }, { .compatible = "fsl,mpc8569-memory-controller", }, { .compatible = "fsl,mpc8572-memory-controller", }, { .compatible = "fsl,mpc8349-memory-controller", }, { .compatible = "fsl,p1020-memory-controller", }, { .compatible = "fsl,p1021-memory-controller", }, { .compatible = "fsl,p2020-memory-controller", }, { .compatible = "fsl,qoriq-memory-controller", }, {}, }; MODULE_DEVICE_TABLE(of, mpc85xx_mc_err_of_match); static struct platform_driver mpc85xx_mc_err_driver = { .probe = fsl_mc_err_probe, .remove = fsl_mc_err_remove, .driver = { .name = "mpc85xx_mc_err", .of_match_table = mpc85xx_mc_err_of_match, }, }; static struct platform_driver * const drivers[] = { &mpc85xx_mc_err_driver, &mpc85xx_l2_err_driver, #ifdef CONFIG_PCI &mpc85xx_pci_err_driver, #endif }; static int __init mpc85xx_mc_init(void) { int res = 0; u32 __maybe_unused pvr = 0; pr_info("Freescale(R) MPC85xx EDAC driver, (C) 2006 Montavista Software\n"); /* make sure error reporting method is sane */ switch (edac_op_state) { case EDAC_OPSTATE_POLL: case EDAC_OPSTATE_INT: break; default: edac_op_state = EDAC_OPSTATE_INT; break; } res = platform_register_drivers(drivers, ARRAY_SIZE(drivers)); if (res) pr_warn(EDAC_MOD_STR "drivers fail to register\n"); return 0; } module_init(mpc85xx_mc_init); static void __exit mpc85xx_mc_exit(void) { platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); } module_exit(mpc85xx_mc_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Montavista Software, Inc."); module_param(edac_op_state, int, 0444); MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll, 2=Interrupt");