diff options
author | Dave Jiang <djiang@mvista.com> | 2008-02-07 08:14:56 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 16:42:23 (GMT) |
commit | 4f4aeeabc061826376c9a72b4714d062664999ea (patch) | |
tree | 888c63a646bd3fef2943531d7187ffacc7c4b6fe /drivers | |
parent | a9a753d53204bf0f42841f65679c7e1711833bcf (diff) | |
download | linux-4f4aeeabc061826376c9a72b4714d062664999ea.tar.xz |
drivers-edac: add marvell mv64x60 driver
Marvell mv64x60 SoC support for EDAC. Used on PPC and MIPS platforms.
Development and testing done on PPC Motorola prpmc2800 ATCA board.
[akpm@linux-foundation.org: make mv64x60_ctl_name static]
Signed-off-by: Dave Jiang <djiang@mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk
Signed-off-by: Douglas Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/edac/Kconfig | 7 | ||||
-rw-r--r-- | drivers/edac/Makefile | 1 | ||||
-rw-r--r-- | drivers/edac/mv64x60_edac.c | 855 | ||||
-rw-r--r-- | drivers/edac/mv64x60_edac.h | 114 |
4 files changed, 977 insertions, 0 deletions
diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig index 1727a00..10119d7 100644 --- a/drivers/edac/Kconfig +++ b/drivers/edac/Kconfig @@ -130,6 +130,13 @@ config EDAC_MPC85XX Support for error detection and correction on the Freescale MPC8560, MPC8540, MPC8548 +config EDAC_MV64X60 + tristate "Marvell MV64x60" + depends on EDAC_MM_EDAC && MV64X60 + help + Support for error detection and correction on the Marvell + MV64360 and MV64460 chipsets. + config EDAC_PASEMI tristate "PA Semi PWRficient" depends on EDAC_MM_EDAC && PCI diff --git a/drivers/edac/Makefile b/drivers/edac/Makefile index 293f9b0..8380773 100644 --- a/drivers/edac/Makefile +++ b/drivers/edac/Makefile @@ -29,5 +29,6 @@ obj-$(CONFIG_EDAC_I82860) += i82860_edac.o obj-$(CONFIG_EDAC_R82600) += r82600_edac.o obj-$(CONFIG_EDAC_PASEMI) += pasemi_edac.o obj-$(CONFIG_EDAC_MPC85XX) += mpc85xx_edac.o +obj-$(CONFIG_EDAC_MV64X60) += mv64x60_edac.o obj-$(CONFIG_EDAC_CELL) += cell_edac.o diff --git a/drivers/edac/mv64x60_edac.c b/drivers/edac/mv64x60_edac.c new file mode 100644 index 0000000..bf071f1 --- /dev/null +++ b/drivers/edac/mv64x60_edac.c @@ -0,0 +1,855 @@ +/* + * Marvell MV64x60 Memory Controller kernel module for PPC platforms + * + * Author: Dave Jiang <djiang@mvista.com> + * + * 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 <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/edac.h> + +#include "edac_core.h" +#include "edac_module.h" +#include "mv64x60_edac.h" + +static const char *mv64x60_ctl_name = "MV64x60"; +static int edac_dev_idx; +static int edac_pci_idx; +static int edac_mc_idx; + +/*********************** PCI err device **********************************/ +#ifdef CONFIG_PCI +static void mv64x60_pci_check(struct edac_pci_ctl_info *pci) +{ + struct mv64x60_pci_pdata *pdata = pci->pvt_info; + u32 cause; + + cause = in_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_CAUSE); + if (!cause) + return; + + printk(KERN_ERR "Error in PCI %d Interface\n", pdata->pci_hose); + printk(KERN_ERR "Cause register: 0x%08x\n", cause); + printk(KERN_ERR "Address Low: 0x%08x\n", + in_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_ADDR_LO)); + printk(KERN_ERR "Address High: 0x%08x\n", + in_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_ADDR_HI)); + printk(KERN_ERR "Attribute: 0x%08x\n", + in_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_ATTR)); + printk(KERN_ERR "Command: 0x%08x\n", + in_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_CMD)); + out_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_CAUSE, ~cause); + + if (cause & MV64X60_PCI_PE_MASK) + edac_pci_handle_pe(pci, pci->ctl_name); + + if (!(cause & MV64X60_PCI_PE_MASK)) + edac_pci_handle_npe(pci, pci->ctl_name); +} + +static irqreturn_t mv64x60_pci_isr(int irq, void *dev_id) +{ + struct edac_pci_ctl_info *pci = dev_id; + struct mv64x60_pci_pdata *pdata = pci->pvt_info; + u32 val; + + val = in_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_CAUSE); + if (!val) + return IRQ_NONE; + + mv64x60_pci_check(pci); + + return IRQ_HANDLED; +} + +static int __devinit mv64x60_pci_err_probe(struct platform_device *pdev) +{ + struct edac_pci_ctl_info *pci; + struct mv64x60_pci_pdata *pdata; + struct resource *r; + int res = 0; + + if (!devres_open_group(&pdev->dev, mv64x60_pci_err_probe, GFP_KERNEL)) + return -ENOMEM; + + pci = edac_pci_alloc_ctl_info(sizeof(*pdata), "mv64x60_pci_err"); + if (!pci) + return -ENOMEM; + + pdata = pci->pvt_info; + + pdata->pci_hose = pdev->id; + pdata->name = "mpc85xx_pci_err"; + pdata->irq = NO_IRQ; + platform_set_drvdata(pdev, pci); + pci->dev = &pdev->dev; + pci->dev_name = pdev->dev.bus_id; + pci->mod_name = EDAC_MOD_STR; + pci->ctl_name = pdata->name; + + if (edac_op_state == EDAC_OPSTATE_POLL) + pci->edac_check = mv64x60_pci_check; + + pdata->edac_idx = edac_pci_idx++; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) { + printk(KERN_ERR "%s: Unable to get resource for " + "PCI err regs\n", __func__); + res = -ENOENT; + goto err; + } + + if (!devm_request_mem_region(&pdev->dev, + r->start, + r->end - r->start + 1, + pdata->name)) { + printk(KERN_ERR "%s: Error while requesting mem region\n", + __func__); + res = -EBUSY; + goto err; + } + + pdata->pci_vbase = devm_ioremap(&pdev->dev, + r->start, + r->end - r->start + 1); + if (!pdata->pci_vbase) { + printk(KERN_ERR "%s: Unable to setup PCI err regs\n", __func__); + res = -ENOMEM; + goto err; + } + + out_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_CAUSE, 0); + out_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_MASK, 0); + out_le32(pdata->pci_vbase + MV64X60_PCI_ERROR_MASK, + MV64X60_PCIx_ERR_MASK_VAL); + + if (edac_pci_add_device(pci, pdata->edac_idx) > 0) { + debugf3("%s(): failed edac_pci_add_device()\n", __func__); + goto err; + } + + if (edac_op_state == EDAC_OPSTATE_INT) { + pdata->irq = platform_get_irq(pdev, 0); + res = devm_request_irq(&pdev->dev, + pdata->irq, + mv64x60_pci_isr, + IRQF_DISABLED, + "[EDAC] PCI err", + pci); + if (res < 0) { + printk(KERN_ERR "%s: Unable to request irq %d for " + "MV64x60 PCI ERR\n", __func__, pdata->irq); + res = -ENODEV; + goto err2; + } + printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for PCI Err\n", + pdata->irq); + } + + devres_remove_group(&pdev->dev, mv64x60_pci_err_probe); + + /* get this far and it's successful */ + debugf3("%s(): success\n", __func__); + + return 0; + +err2: + edac_pci_del_device(&pdev->dev); +err: + edac_pci_free_ctl_info(pci); + devres_release_group(&pdev->dev, mv64x60_pci_err_probe); + return res; +} + +static int mv64x60_pci_err_remove(struct platform_device *pdev) +{ + struct edac_pci_ctl_info *pci = platform_get_drvdata(pdev); + + debugf0("%s()\n", __func__); + + edac_pci_del_device(&pdev->dev); + + edac_pci_free_ctl_info(pci); + + return 0; +} + +static struct platform_driver mv64x60_pci_err_driver = { + .probe = mv64x60_pci_err_probe, + .remove = __devexit_p(mv64x60_pci_err_remove), + .driver = { + .name = "mv64x60_pci_err", + } +}; + +#endif /* CONFIG_PCI */ + +/*********************** SRAM err device **********************************/ +static void mv64x60_sram_check(struct edac_device_ctl_info *edac_dev) +{ + struct mv64x60_sram_pdata *pdata = edac_dev->pvt_info; + u32 cause; + + cause = in_le32(pdata->sram_vbase + MV64X60_SRAM_ERR_CAUSE); + if (!cause) + return; + + printk(KERN_ERR "Error in internal SRAM\n"); + printk(KERN_ERR "Cause register: 0x%08x\n", cause); + printk(KERN_ERR "Address Low: 0x%08x\n", + in_le32(pdata->sram_vbase + MV64X60_SRAM_ERR_ADDR_LO)); + printk(KERN_ERR "Address High: 0x%08x\n", + in_le32(pdata->sram_vbase + MV64X60_SRAM_ERR_ADDR_HI)); + printk(KERN_ERR "Data Low: 0x%08x\n", + in_le32(pdata->sram_vbase + MV64X60_SRAM_ERR_DATA_LO)); + printk(KERN_ERR "Data High: 0x%08x\n", + in_le32(pdata->sram_vbase + MV64X60_SRAM_ERR_DATA_HI)); + printk(KERN_ERR "Parity: 0x%08x\n", + in_le32(pdata->sram_vbase + MV64X60_SRAM_ERR_PARITY)); + out_le32(pdata->sram_vbase + MV64X60_SRAM_ERR_CAUSE, 0); + + edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name); +} + +static irqreturn_t mv64x60_sram_isr(int irq, void *dev_id) +{ + struct edac_device_ctl_info *edac_dev = dev_id; + struct mv64x60_sram_pdata *pdata = edac_dev->pvt_info; + u32 cause; + + cause = in_le32(pdata->sram_vbase + MV64X60_SRAM_ERR_CAUSE); + if (!cause) + return IRQ_NONE; + + mv64x60_sram_check(edac_dev); + + return IRQ_HANDLED; +} + +static int __devinit mv64x60_sram_err_probe(struct platform_device *pdev) +{ + struct edac_device_ctl_info *edac_dev; + struct mv64x60_sram_pdata *pdata; + struct resource *r; + int res = 0; + + if (!devres_open_group(&pdev->dev, mv64x60_sram_err_probe, GFP_KERNEL)) + return -ENOMEM; + + edac_dev = edac_device_alloc_ctl_info(sizeof(*pdata), + "sram", 1, NULL, 0, 0, NULL, 0, + edac_dev_idx); + if (!edac_dev) { + devres_release_group(&pdev->dev, mv64x60_sram_err_probe); + return -ENOMEM; + } + + pdata = edac_dev->pvt_info; + pdata->name = "mv64x60_sram_err"; + pdata->irq = NO_IRQ; + edac_dev->dev = &pdev->dev; + platform_set_drvdata(pdev, edac_dev); + edac_dev->dev_name = pdev->dev.bus_id; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) { + printk(KERN_ERR "%s: Unable to get resource for " + "SRAM err regs\n", __func__); + res = -ENOENT; + goto err; + } + + if (!devm_request_mem_region(&pdev->dev, + r->start, + r->end - r->start + 1, + pdata->name)) { + printk(KERN_ERR "%s: Error while request mem region\n", + __func__); + res = -EBUSY; + goto err; + } + + pdata->sram_vbase = devm_ioremap(&pdev->dev, + r->start, + r->end - r->start + 1); + if (!pdata->sram_vbase) { + printk(KERN_ERR "%s: Unable to setup SRAM err regs\n", + __func__); + res = -ENOMEM; + goto err; + } + + /* setup SRAM err registers */ + out_le32(pdata->sram_vbase + MV64X60_SRAM_ERR_CAUSE, 0); + + edac_dev->mod_name = EDAC_MOD_STR; + edac_dev->ctl_name = pdata->name; + + if (edac_op_state == EDAC_OPSTATE_POLL) + edac_dev->edac_check = mv64x60_sram_check; + + pdata->edac_idx = edac_dev_idx++; + + if (edac_device_add_device(edac_dev) > 0) { + debugf3("%s(): failed edac_device_add_device()\n", __func__); + goto err; + } + + if (edac_op_state == EDAC_OPSTATE_INT) { + pdata->irq = platform_get_irq(pdev, 0); + res = devm_request_irq(&pdev->dev, + pdata->irq, + mv64x60_sram_isr, + IRQF_DISABLED, + "[EDAC] SRAM err", + edac_dev); + if (res < 0) { + printk(KERN_ERR + "%s: Unable to request irq %d for " + "MV64x60 SRAM ERR\n", __func__, pdata->irq); + res = -ENODEV; + goto err2; + } + + printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for SRAM Err\n", + pdata->irq); + } + + devres_remove_group(&pdev->dev, mv64x60_sram_err_probe); + + /* get this far and it's successful */ + debugf3("%s(): success\n", __func__); + + return 0; + +err2: + edac_device_del_device(&pdev->dev); +err: + devres_release_group(&pdev->dev, mv64x60_sram_err_probe); + edac_device_free_ctl_info(edac_dev); + return res; +} + +static int mv64x60_sram_err_remove(struct platform_device *pdev) +{ + struct edac_device_ctl_info *edac_dev = platform_get_drvdata(pdev); + + debugf0("%s()\n", __func__); + + edac_device_del_device(&pdev->dev); + edac_device_free_ctl_info(edac_dev); + + return 0; +} + +static struct platform_driver mv64x60_sram_err_driver = { + .probe = mv64x60_sram_err_probe, + .remove = mv64x60_sram_err_remove, + .driver = { + .name = "mv64x60_sram_err", + } +}; + +/*********************** CPU err device **********************************/ +static void mv64x60_cpu_check(struct edac_device_ctl_info *edac_dev) +{ + struct mv64x60_cpu_pdata *pdata = edac_dev->pvt_info; + u32 cause; + + cause = in_le32(pdata->cpu_vbase[1] + MV64x60_CPU_ERR_CAUSE) & + MV64x60_CPU_CAUSE_MASK; + if (!cause) + return; + + printk(KERN_ERR "Error on CPU interface\n"); + printk(KERN_ERR "Cause register: 0x%08x\n", cause); + printk(KERN_ERR "Address Low: 0x%08x\n", + in_le32(pdata->cpu_vbase[0] + MV64x60_CPU_ERR_ADDR_LO)); + printk(KERN_ERR "Address High: 0x%08x\n", + in_le32(pdata->cpu_vbase[0] + MV64x60_CPU_ERR_ADDR_HI)); + printk(KERN_ERR "Data Low: 0x%08x\n", + in_le32(pdata->cpu_vbase[1] + MV64x60_CPU_ERR_DATA_LO)); + printk(KERN_ERR "Data High: 0x%08x\n", + in_le32(pdata->cpu_vbase[1] + MV64x60_CPU_ERR_DATA_HI)); + printk(KERN_ERR "Parity: 0x%08x\n", + in_le32(pdata->cpu_vbase[1] + MV64x60_CPU_ERR_PARITY)); + out_le32(pdata->cpu_vbase[1] + MV64x60_CPU_ERR_CAUSE, 0); + + edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name); +} + +static irqreturn_t mv64x60_cpu_isr(int irq, void *dev_id) +{ + struct edac_device_ctl_info *edac_dev = dev_id; + struct mv64x60_cpu_pdata *pdata = edac_dev->pvt_info; + u32 cause; + + cause = in_le32(pdata->cpu_vbase[1] + MV64x60_CPU_ERR_CAUSE) & + MV64x60_CPU_CAUSE_MASK; + if (!cause) + return IRQ_NONE; + + mv64x60_cpu_check(edac_dev); + + return IRQ_HANDLED; +} + +static int __devinit mv64x60_cpu_err_probe(struct platform_device *pdev) +{ + struct edac_device_ctl_info *edac_dev; + struct resource *r; + struct mv64x60_cpu_pdata *pdata; + int res = 0; + + if (!devres_open_group(&pdev->dev, mv64x60_cpu_err_probe, GFP_KERNEL)) + return -ENOMEM; + + edac_dev = edac_device_alloc_ctl_info(sizeof(*pdata), + "cpu", 1, NULL, 0, 0, NULL, 0, + edac_dev_idx); + if (!edac_dev) { + devres_release_group(&pdev->dev, mv64x60_cpu_err_probe); + return -ENOMEM; + } + + pdata = edac_dev->pvt_info; + pdata->name = "mv64x60_cpu_err"; + pdata->irq = NO_IRQ; + edac_dev->dev = &pdev->dev; + platform_set_drvdata(pdev, edac_dev); + edac_dev->dev_name = pdev->dev.bus_id; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) { + printk(KERN_ERR "%s: Unable to get resource for " + "CPU err regs\n", __func__); + res = -ENOENT; + goto err; + } + + if (!devm_request_mem_region(&pdev->dev, + r->start, + r->end - r->start + 1, + pdata->name)) { + printk(KERN_ERR "%s: Error while requesting mem region\n", + __func__); + res = -EBUSY; + goto err; + } + + pdata->cpu_vbase[0] = devm_ioremap(&pdev->dev, + r->start, + r->end - r->start + 1); + if (!pdata->cpu_vbase[0]) { + printk(KERN_ERR "%s: Unable to setup CPU err regs\n", __func__); + res = -ENOMEM; + goto err; + } + + r = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!r) { + printk(KERN_ERR "%s: Unable to get resource for " + "CPU err regs\n", __func__); + res = -ENOENT; + goto err; + } + + if (!devm_request_mem_region(&pdev->dev, + r->start, + r->end - r->start + 1, + pdata->name)) { + printk(KERN_ERR "%s: Error while requesting mem region\n", + __func__); + res = -EBUSY; + goto err; + } + + pdata->cpu_vbase[1] = devm_ioremap(&pdev->dev, + r->start, + r->end - r->start + 1); + if (!pdata->cpu_vbase[1]) { + printk(KERN_ERR "%s: Unable to setup CPU err regs\n", __func__); + res = -ENOMEM; + goto err; + } + + /* setup CPU err registers */ + out_le32(pdata->cpu_vbase[1] + MV64x60_CPU_ERR_CAUSE, 0); + out_le32(pdata->cpu_vbase[1] + MV64x60_CPU_ERR_MASK, 0); + out_le32(pdata->cpu_vbase[1] + MV64x60_CPU_ERR_MASK, 0x000000ff); + + edac_dev->mod_name = EDAC_MOD_STR; + edac_dev->ctl_name = pdata->name; + if (edac_op_state == EDAC_OPSTATE_POLL) + edac_dev->edac_check = mv64x60_cpu_check; + + pdata->edac_idx = edac_dev_idx++; + + if (edac_device_add_device(edac_dev) > 0) { + debugf3("%s(): failed edac_device_add_device()\n", __func__); + goto err; + } + + if (edac_op_state == EDAC_OPSTATE_INT) { + pdata->irq = platform_get_irq(pdev, 0); + res = devm_request_irq(&pdev->dev, + pdata->irq, + mv64x60_cpu_isr, + IRQF_DISABLED, + "[EDAC] CPU err", + edac_dev); + if (res < 0) { + printk(KERN_ERR + "%s: Unable to request irq %d for MV64x60 " + "CPU ERR\n", __func__, pdata->irq); + res = -ENODEV; + goto err2; + } + + printk(KERN_INFO EDAC_MOD_STR + " acquired irq %d for CPU Err\n", pdata->irq); + } + + devres_remove_group(&pdev->dev, mv64x60_cpu_err_probe); + + /* get this far and it's successful */ + debugf3("%s(): success\n", __func__); + + return 0; + +err2: + edac_device_del_device(&pdev->dev); +err: + devres_release_group(&pdev->dev, mv64x60_cpu_err_probe); + edac_device_free_ctl_info(edac_dev); + return res; +} + +static int mv64x60_cpu_err_remove(struct platform_device *pdev) +{ + struct edac_device_ctl_info *edac_dev = platform_get_drvdata(pdev); + + debugf0("%s()\n", __func__); + + edac_device_del_device(&pdev->dev); + edac_device_free_ctl_info(edac_dev); + return 0; +} + +static struct platform_driver mv64x60_cpu_err_driver = { + .probe = mv64x60_cpu_err_probe, + .remove = mv64x60_cpu_err_remove, + .driver = { + .name = "mv64x60_cpu_err", + } +}; + +/*********************** DRAM err device **********************************/ + +static void mv64x60_mc_check(struct mem_ctl_info *mci) +{ + struct mv64x60_mc_pdata *pdata = mci->pvt_info; + u32 reg; + u32 err_addr; + u32 sdram_ecc; + u32 comp_ecc; + u32 syndrome; + + reg = in_le32(pdata->mc_vbase + MV64X60_SDRAM_ERR_ADDR); + if (!reg) + return; + + err_addr = reg & ~0x3; + sdram_ecc = in_le32(pdata->mc_vbase + MV64X60_SDRAM_ERR_ECC_RCVD); + comp_ecc = in_le32(pdata->mc_vbase + MV64X60_SDRAM_ERR_ECC_CALC); + syndrome = sdram_ecc ^ comp_ecc; + + /* first bit clear in ECC Err Reg, 1 bit error, correctable by HW */ + if (!(reg & 0x1)) + edac_mc_handle_ce(mci, err_addr >> PAGE_SHIFT, + err_addr & PAGE_MASK, syndrome, 0, 0, + mci->ctl_name); + else /* 2 bit error, UE */ + edac_mc_handle_ue(mci, err_addr >> PAGE_SHIFT, + err_addr & PAGE_MASK, 0, mci->ctl_name); + + /* clear the error */ + out_le32(pdata->mc_vbase + MV64X60_SDRAM_ERR_ADDR, 0); +} + +static irqreturn_t mv64x60_mc_isr(int irq, void *dev_id) +{ + struct mem_ctl_info *mci = dev_id; + struct mv64x60_mc_pdata *pdata = mci->pvt_info; + u32 reg; + + reg = in_le32(pdata->mc_vbase + MV64X60_SDRAM_ERR_ADDR); + if (!reg) + return IRQ_NONE; + + /* writing 0's to the ECC err addr in check function clears irq */ + mv64x60_mc_check(mci); + + return IRQ_HANDLED; +} + +static void get_total_mem(struct mv64x60_mc_pdata *pdata) +{ + struct device_node *np = NULL; + const unsigned int *reg; + + np = of_find_node_by_type(NULL, "memory"); + if (!np) + return; + + reg = get_property(np, "reg", NULL); + + pdata->total_mem = reg[1]; +} + +static void mv64x60_init_csrows(struct mem_ctl_info *mci, + struct mv64x60_mc_pdata *pdata) +{ + struct csrow_info *csrow; + u32 devtype; + u32 ctl; + + get_total_mem(pdata); + + ctl = in_le32(pdata->mc_vbase + MV64X60_SDRAM_CONFIG); + + csrow = &mci->csrows[0]; + csrow->first_page = 0; + csrow->nr_pages = pdata->total_mem >> PAGE_SHIFT; + csrow->last_page = csrow->first_page + csrow->nr_pages - 1; + csrow->grain = 8; + + csrow->mtype = (ctl & MV64X60_SDRAM_REGISTERED) ? MEM_RDDR : MEM_DDR; + + devtype = (ctl >> 20) & 0x3; + switch (devtype) { + case 0x0: + csrow->dtype = DEV_X32; + break; + case 0x2: /* could be X8 too, but no way to tell */ + csrow->dtype = DEV_X16; + break; + case 0x3: + csrow->dtype = DEV_X4; + break; + default: + csrow->dtype = DEV_UNKNOWN; + break; + } + + csrow->edac_mode = EDAC_SECDED; +} + +static int __devinit mv64x60_mc_err_probe(struct platform_device *pdev) +{ + struct mem_ctl_info *mci; + struct mv64x60_mc_pdata *pdata; + struct resource *r; + u32 ctl; + int res = 0; + + if (!devres_open_group(&pdev->dev, mv64x60_mc_err_probe, GFP_KERNEL)) + return -ENOMEM; + + mci = edac_mc_alloc(sizeof(struct mv64x60_mc_pdata), 1, 1, edac_mc_idx); + if (!mci) { + printk(KERN_ERR "%s: No memory for CPU err\n", __func__); + devres_release_group(&pdev->dev, mv64x60_mc_err_probe); + return -ENOMEM; + } + + pdata = mci->pvt_info; + mci->dev = &pdev->dev; + platform_set_drvdata(pdev, mci); + pdata->name = "mv64x60_mc_err"; + pdata->irq = NO_IRQ; + mci->dev_name = pdev->dev.bus_id; + pdata->edac_idx = edac_mc_idx++; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) { + printk(KERN_ERR "%s: Unable to get resource for " + "MC err regs\n", __func__); + res = -ENOENT; + goto err; + } + + if (!devm_request_mem_region(&pdev->dev, + r->start, + r->end - r->start + 1, + pdata->name)) { + printk(KERN_ERR "%s: Error while requesting mem region\n", + __func__); + res = -EBUSY; + goto err; + } + + pdata->mc_vbase = devm_ioremap(&pdev->dev, + r->start, + r->end - r->start + 1); + if (!pdata->mc_vbase) { + printk(KERN_ERR "%s: Unable to setup MC err regs\n", __func__); + res = -ENOMEM; + goto err; + } + + ctl = in_le32(pdata->mc_vbase + MV64X60_SDRAM_CONFIG); + if (!(ctl & MV64X60_SDRAM_ECC)) { + /* Non-ECC RAM? */ + printk(KERN_WARNING "%s: No ECC DIMMs discovered\n", __func__); + res = -ENODEV; + goto err2; + } + + debugf3("%s(): init mci\n", __func__); + mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_DDR; + mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED; + mci->edac_cap = EDAC_FLAG_SECDED; + mci->mod_name = EDAC_MOD_STR; + mci->mod_ver = MV64x60_REVISION; + mci->ctl_name = mv64x60_ctl_name; + + if (edac_op_state == EDAC_OPSTATE_POLL) + mci->edac_check = mv64x60_mc_check; + + mci->ctl_page_to_phys = NULL; + + mci->scrub_mode = SCRUB_SW_SRC; + + mv64x60_init_csrows(mci, pdata); + + /* setup MC registers */ + out_le32(pdata->mc_vbase + MV64X60_SDRAM_ERR_ADDR, 0); + ctl = in_le32(pdata->mc_vbase + MV64X60_SDRAM_ERR_ECC_CNTL); + ctl = (ctl & 0xff00ffff) | 0x10000; + out_le32(pdata->mc_vbase + MV64X60_SDRAM_ERR_ECC_CNTL, ctl); + + if (edac_mc_add_mc(mci)) { + debugf3("%s(): failed edac_mc_add_mc()\n", __func__); + goto err; + } + + if (edac_op_state == EDAC_OPSTATE_INT) { + /* acquire interrupt that reports errors */ + pdata->irq = platform_get_irq(pdev, 0); + res = devm_request_irq(&pdev->dev, + pdata->irq, + mv64x60_mc_isr, + IRQF_DISABLED, + "[EDAC] MC err", + mci); + if (res < 0) { + printk(KERN_ERR "%s: Unable to request irq %d for " + "MV64x60 DRAM ERR\n", __func__, pdata->irq); + res = -ENODEV; + goto err2; + } + + printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for MC Err\n", + pdata->irq); + } + + /* get this far and it's successful */ + debugf3("%s(): success\n", __func__); + + return 0; + +err2: + edac_mc_del_mc(&pdev->dev); +err: + devres_release_group(&pdev->dev, mv64x60_mc_err_probe); + edac_mc_free(mci); + return res; +} + +static int mv64x60_mc_err_remove(struct platform_device *pdev) +{ + struct mem_ctl_info *mci = platform_get_drvdata(pdev); + + debugf0("%s()\n", __func__); + + edac_mc_del_mc(&pdev->dev); + edac_mc_free(mci); + return 0; +} + +static struct platform_driver mv64x60_mc_err_driver = { + .probe = mv64x60_mc_err_probe, + .remove = mv64x60_mc_err_remove, + .driver = { + .name = "mv64x60_mc_err", + } +}; + +static int __init mv64x60_edac_init(void) +{ + int ret = 0; + + printk(KERN_INFO "Marvell MV64x60 EDAC driver " MV64x60_REVISION "\n"); + printk(KERN_INFO "\t(C) 2006-2007 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; + } + + ret = platform_driver_register(&mv64x60_mc_err_driver); + if (ret) + printk(KERN_WARNING EDAC_MOD_STR "MC err failed to register\n"); + + ret = platform_driver_register(&mv64x60_cpu_err_driver); + if (ret) + printk(KERN_WARNING EDAC_MOD_STR + "CPU err failed to register\n"); + + ret = platform_driver_register(&mv64x60_sram_err_driver); + if (ret) + printk(KERN_WARNING EDAC_MOD_STR + "SRAM err failed to register\n"); + +#ifdef CONFIG_PCI + ret = platform_driver_register(&mv64x60_pci_err_driver); + if (ret) + printk(KERN_WARNING EDAC_MOD_STR + "PCI err failed to register\n"); +#endif + + return ret; +} +module_init(mv64x60_edac_init); + +static void __exit mv64x60_edac_exit(void) +{ +#ifdef CONFIG_PCI + platform_driver_unregister(&mv64x60_pci_err_driver); +#endif + platform_driver_unregister(&mv64x60_sram_err_driver); + platform_driver_unregister(&mv64x60_cpu_err_driver); + platform_driver_unregister(&mv64x60_mc_err_driver); +} +module_exit(mv64x60_edac_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"); diff --git a/drivers/edac/mv64x60_edac.h b/drivers/edac/mv64x60_edac.h new file mode 100644 index 0000000..e042e2d --- /dev/null +++ b/drivers/edac/mv64x60_edac.h @@ -0,0 +1,114 @@ +/* + * EDAC defs for Marvell MV64x60 bridge chip + * + * Author: Dave Jiang <djiang@mvista.com> + * + * 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. + * + */ +#ifndef _MV64X60_EDAC_H_ +#define _MV64X60_EDAC_H_ + +#define MV64x60_REVISION " Ver: 2.0.0 " __DATE__ +#define EDAC_MOD_STR "MV64x60_edac" + +#define mv64x60_printk(level, fmt, arg...) \ + edac_printk(level, "MV64x60", fmt, ##arg) + +#define mv64x60_mc_printk(mci, level, fmt, arg...) \ + edac_mc_chipset_printk(mci, level, "MV64x60", fmt, ##arg) + +/* CPU Error Report Registers */ +#define MV64x60_CPU_ERR_ADDR_LO 0x00 /* 0x0070 */ +#define MV64x60_CPU_ERR_ADDR_HI 0x08 /* 0x0078 */ +#define MV64x60_CPU_ERR_DATA_LO 0x00 /* 0x0128 */ +#define MV64x60_CPU_ERR_DATA_HI 0x08 /* 0x0130 */ +#define MV64x60_CPU_ERR_PARITY 0x10 /* 0x0138 */ +#define MV64x60_CPU_ERR_CAUSE 0x18 /* 0x0140 */ +#define MV64x60_CPU_ERR_MASK 0x20 /* 0x0148 */ + +#define MV64x60_CPU_CAUSE_MASK 0x07ffffff + +/* SRAM Error Report Registers */ +#define MV64X60_SRAM_ERR_CAUSE 0x08 /* 0x0388 */ +#define MV64X60_SRAM_ERR_ADDR_LO 0x10 /* 0x0390 */ +#define MV64X60_SRAM_ERR_ADDR_HI 0x78 /* 0x03f8 */ +#define MV64X60_SRAM_ERR_DATA_LO 0x18 /* 0x0398 */ +#define MV64X60_SRAM_ERR_DATA_HI 0x20 /* 0x03a0 */ +#define MV64X60_SRAM_ERR_PARITY 0x28 /* 0x03a8 */ + +/* SDRAM Controller Registers */ +#define MV64X60_SDRAM_CONFIG 0x00 /* 0x1400 */ +#define MV64X60_SDRAM_ERR_DATA_HI 0x40 /* 0x1440 */ +#define MV64X60_SDRAM_ERR_DATA_LO 0x44 /* 0x1444 */ +#define MV64X60_SDRAM_ERR_ECC_RCVD 0x48 /* 0x1448 */ +#define MV64X60_SDRAM_ERR_ECC_CALC 0x4c /* 0x144c */ +#define MV64X60_SDRAM_ERR_ADDR 0x50 /* 0x1450 */ +#define MV64X60_SDRAM_ERR_ECC_CNTL 0x54 /* 0x1454 */ +#define MV64X60_SDRAM_ERR_ECC_ERR_CNT 0x58 /* 0x1458 */ + +#define MV64X60_SDRAM_REGISTERED 0x20000 +#define MV64X60_SDRAM_ECC 0x40000 + +#ifdef CONFIG_PCI +/* + * Bit 0 of MV64x60_PCIx_ERR_MASK does not exist on the 64360 and because of + * errata FEr-#11 and FEr-##16 for the 64460, it should be 0 on that chip as + * well. IOW, don't set bit 0. + */ +#define MV64X60_PCIx_ERR_MASK_VAL 0x00a50c24 + +/* Register offsets from PCIx error address low register */ +#define MV64X60_PCI_ERROR_ADDR_LO 0x00 +#define MV64X60_PCI_ERROR_ADDR_HI 0x04 +#define MV64X60_PCI_ERROR_ATTR 0x08 +#define MV64X60_PCI_ERROR_CMD 0x10 +#define MV64X60_PCI_ERROR_CAUSE 0x18 +#define MV64X60_PCI_ERROR_MASK 0x1c + +#define MV64X60_PCI_ERR_SWrPerr 0x0002 +#define MV64X60_PCI_ERR_SRdPerr 0x0004 +#define MV64X60_PCI_ERR_MWrPerr 0x0020 +#define MV64X60_PCI_ERR_MRdPerr 0x0040 + +#define MV64X60_PCI_PE_MASK (MV64X60_PCI_ERR_SWrPerr | \ + MV64X60_PCI_ERR_SRdPerr | \ + MV64X60_PCI_ERR_MWrPerr | \ + MV64X60_PCI_ERR_MRdPerr) + +struct mv64x60_pci_pdata { + int pci_hose; + void __iomem *pci_vbase; + char *name; + int irq; + int edac_idx; +}; + +#endif /* CONFIG_PCI */ + +struct mv64x60_mc_pdata { + void __iomem *mc_vbase; + int total_mem; + char *name; + int irq; + int edac_idx; +}; + +struct mv64x60_cpu_pdata { + void __iomem *cpu_vbase[2]; + char *name; + int irq; + int edac_idx; +}; + +struct mv64x60_sram_pdata { + void __iomem *sram_vbase; + char *name; + int irq; + int edac_idx; +}; + +#endif |