Commit f65aad41 authored by Ralf Baechle's avatar Ralf Baechle

MIPS: Cavium: Add EDAC support.

Drivers for EDAC on Cavium.  Supported subsystems are:

 o CPU primary caches.  These are parity protected only, so only error
   reporting.
 o Second level cache - ECC protected, provides SECDED.
 o Memory: ECC / SECDEC if used with suitable DRAM modules.  The driver will
   will only initialize if ECC is enabled on a system so is safe to run on
   non-ECC memory.
 o PCI: Parity error reporting

Since it is very hard to test this sort of code the implementation is very
conservative and uses polling where possible for now.
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
Reviewed-by: default avatarBorislav Petkov <borislav.petkov@amd.com>
parent aa1762f4
...@@ -2722,6 +2722,15 @@ W: bluesmoke.sourceforge.net ...@@ -2722,6 +2722,15 @@ W: bluesmoke.sourceforge.net
S: Maintained S: Maintained
F: drivers/edac/amd64_edac* F: drivers/edac/amd64_edac*
EDAC-CAVIUM
M: Ralf Baechle <ralf@linux-mips.org>
M: David Daney <david.daney@cavium.com>
L: linux-edac@vger.kernel.org
L: linux-mips@linux-mips.org
W: bluesmoke.sourceforge.net
S: Supported
F: drivers/edac/octeon_edac*
EDAC-E752X EDAC-E752X
M: Mark Gross <mark.gross@intel.com> M: Mark Gross <mark.gross@intel.com>
M: Doug Thompson <dougthompson@xmission.com> M: Doug Thompson <dougthompson@xmission.com>
......
...@@ -774,6 +774,7 @@ config CAVIUM_OCTEON_REFERENCE_BOARD ...@@ -774,6 +774,7 @@ config CAVIUM_OCTEON_REFERENCE_BOARD
select DMA_COHERENT select DMA_COHERENT
select SYS_SUPPORTS_64BIT_KERNEL select SYS_SUPPORTS_64BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_BIG_ENDIAN
select EDAC_SUPPORT
select SYS_SUPPORTS_HOTPLUG_CPU select SYS_SUPPORTS_HOTPLUG_CPU
select SYS_HAS_EARLY_PRINTK select SYS_HAS_EARLY_PRINTK
select SYS_HAS_CPU_CAVIUM_OCTEON select SYS_HAS_CPU_CAVIUM_OCTEON
......
...@@ -4,9 +4,11 @@ ...@@ -4,9 +4,11 @@
* for more details. * for more details.
* *
* Copyright (C) 2004-2007 Cavium Networks * Copyright (C) 2004-2007 Cavium Networks
* Copyright (C) 2008 Wind River Systems * Copyright (C) 2008, 2009 Wind River Systems
* written by Ralf Baechle <ralf@linux-mips.org>
*/ */
#include <linux/init.h> #include <linux/init.h>
#include <linux/kernel.h>
#include <linux/console.h> #include <linux/console.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/export.h> #include <linux/export.h>
...@@ -821,3 +823,29 @@ void __init device_tree_init(void) ...@@ -821,3 +823,29 @@ void __init device_tree_init(void)
} }
unflatten_device_tree(); unflatten_device_tree();
} }
static char *edac_device_names[] = {
"co_l2c_edac",
"co_lmc_edac",
"co_pc_edac",
};
static int __init edac_devinit(void)
{
struct platform_device *dev;
int i, err = 0;
char *name;
for (i = 0; i < ARRAY_SIZE(edac_device_names); i++) {
name = edac_device_names[i];
dev = platform_device_register_simple(name, -1, NULL, 0);
if (IS_ERR(dev)) {
pr_err("Registation of %s failed!\n", name);
err = PTR_ERR(dev);
}
}
return err;
}
device_initcall(edac_devinit);
...@@ -5,6 +5,7 @@ ...@@ -5,6 +5,7 @@
* *
* Copyright (C) 2005-2007 Cavium Networks * Copyright (C) 2005-2007 Cavium Networks
*/ */
#include <linux/export.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/sched.h> #include <linux/sched.h>
...@@ -28,6 +29,7 @@ ...@@ -28,6 +29,7 @@
#include <asm/octeon/octeon.h> #include <asm/octeon/octeon.h>
unsigned long long cache_err_dcache[NR_CPUS]; unsigned long long cache_err_dcache[NR_CPUS];
EXPORT_SYMBOL_GPL(cache_err_dcache);
/** /**
* Octeon automatically flushes the dcache on tlb changes, so * Octeon automatically flushes the dcache on tlb changes, so
...@@ -288,42 +290,42 @@ void __cpuinit octeon_cache_init(void) ...@@ -288,42 +290,42 @@ void __cpuinit octeon_cache_init(void)
* Handle a cache error exception * Handle a cache error exception
*/ */
static void cache_parity_error_octeon(int non_recoverable) static RAW_NOTIFIER_HEAD(co_cache_error_chain);
int register_co_cache_error_notifier(struct notifier_block *nb)
{ {
unsigned long coreid = cvmx_get_core_num(); return raw_notifier_chain_register(&co_cache_error_chain, nb);
uint64_t icache_err = read_octeon_c0_icacheerr(); }
EXPORT_SYMBOL_GPL(register_co_cache_error_notifier);
pr_err("Cache error exception:\n");
pr_err("cp0_errorepc == %lx\n", read_c0_errorepc());
if (icache_err & 1) {
pr_err("CacheErr (Icache) == %llx\n",
(unsigned long long)icache_err);
write_octeon_c0_icacheerr(0);
}
if (cache_err_dcache[coreid] & 1) {
pr_err("CacheErr (Dcache) == %llx\n",
(unsigned long long)cache_err_dcache[coreid]);
cache_err_dcache[coreid] = 0;
}
if (non_recoverable) int unregister_co_cache_error_notifier(struct notifier_block *nb)
panic("Can't handle cache error: nested exception"); {
return raw_notifier_chain_unregister(&co_cache_error_chain, nb);
}
EXPORT_SYMBOL_GPL(unregister_co_cache_error_notifier);
static inline int co_cache_error_call_notifiers(unsigned long val)
{
return raw_notifier_call_chain(&co_cache_error_chain, val, NULL);
} }
/** /**
* Called when the the exception is recoverable * Called when the the exception is recoverable
*/ */
asmlinkage void cache_parity_error_octeon_recoverable(void) asmlinkage void cache_parity_error_octeon_recoverable(void)
{ {
cache_parity_error_octeon(0); co_cache_error_call_notifiers(0);
} }
/** /**
* Called when the the exception is not recoverable * Called when the the exception is not recoverable
*
* The issue not that the cache error exception itself was non-recoverable
* but that due to nesting of exception may have lost some state so can't
* continue.
*/ */
asmlinkage void cache_parity_error_octeon_non_recoverable(void) asmlinkage void cache_parity_error_octeon_non_recoverable(void)
{ {
cache_parity_error_octeon(1); co_cache_error_call_notifiers(1);
panic("Can't handle cache error: nested exception");
} }
...@@ -11,6 +11,7 @@ ...@@ -11,6 +11,7 @@
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/time.h> #include <linux/time.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/swiotlb.h> #include <linux/swiotlb.h>
#include <asm/time.h> #include <asm/time.h>
...@@ -704,6 +705,9 @@ static int __init octeon_pci_setup(void) ...@@ -704,6 +705,9 @@ static int __init octeon_pci_setup(void)
*/ */
cvmx_write_csr(CVMX_NPI_PCI_INT_SUM2, -1); cvmx_write_csr(CVMX_NPI_PCI_INT_SUM2, -1);
if (IS_ERR(platform_device_register_simple("co_pci_edac", 0, NULL, 0)))
pr_err("Registation of co_pci_edac failed!\n");
octeon_pci_dma_init(); octeon_pci_dma_init();
return 0; return 0;
......
...@@ -7,7 +7,7 @@ ...@@ -7,7 +7,7 @@
menuconfig EDAC menuconfig EDAC
bool "EDAC (Error Detection And Correction) reporting" bool "EDAC (Error Detection And Correction) reporting"
depends on HAS_IOMEM depends on HAS_IOMEM
depends on X86 || PPC || TILE || ARM depends on X86 || PPC || TILE || ARM || EDAC_SUPPORT
help help
EDAC is designed to report errors in the core system. EDAC is designed to report errors in the core system.
These are low-level errors that are reported in the CPU or These are low-level errors that are reported in the CPU or
...@@ -27,6 +27,9 @@ menuconfig EDAC ...@@ -27,6 +27,9 @@ menuconfig EDAC
There is also a mailing list for the EDAC project, which can There is also a mailing list for the EDAC project, which can
be found via the sourceforge page. be found via the sourceforge page.
config EDAC_SUPPORT
bool
if EDAC if EDAC
comment "Reporting subsystems" comment "Reporting subsystems"
...@@ -316,4 +319,32 @@ config EDAC_HIGHBANK_L2 ...@@ -316,4 +319,32 @@ config EDAC_HIGHBANK_L2
Support for error detection and correction on the Support for error detection and correction on the
Calxeda Highbank memory controller. Calxeda Highbank memory controller.
config EDAC_OCTEON_PC
tristate "Cavium Octeon Primary Caches"
depends on EDAC_MM_EDAC && CPU_CAVIUM_OCTEON
help
Support for error detection and correction on the primary caches of
the cnMIPS cores of Cavium Octeon family SOCs.
config EDAC_OCTEON_L2C
tristate "Cavium Octeon Secondary Caches (L2C)"
depends on EDAC_MM_EDAC && CPU_CAVIUM_OCTEON
help
Support for error detection and correction on the
Cavium Octeon family of SOCs.
config EDAC_OCTEON_LMC
tristate "Cavium Octeon DRAM Memory Controller (LMC)"
depends on EDAC_MM_EDAC && CPU_CAVIUM_OCTEON
help
Support for error detection and correction on the
Cavium Octeon family of SOCs.
config EDAC_OCTEON_PCI
tristate "Cavium Octeon PCI Controller"
depends on EDAC_MM_EDAC && PCI && CPU_CAVIUM_OCTEON
help
Support for error detection and correction on the
Cavium Octeon family of SOCs.
endif # EDAC endif # EDAC
...@@ -58,3 +58,8 @@ obj-$(CONFIG_EDAC_TILE) += tile_edac.o ...@@ -58,3 +58,8 @@ obj-$(CONFIG_EDAC_TILE) += tile_edac.o
obj-$(CONFIG_EDAC_HIGHBANK_MC) += highbank_mc_edac.o obj-$(CONFIG_EDAC_HIGHBANK_MC) += highbank_mc_edac.o
obj-$(CONFIG_EDAC_HIGHBANK_L2) += highbank_l2_edac.o obj-$(CONFIG_EDAC_HIGHBANK_L2) += highbank_l2_edac.o
obj-$(CONFIG_EDAC_OCTEON_PC) += octeon_edac-pc.o
obj-$(CONFIG_EDAC_OCTEON_L2C) += octeon_edac-l2c.o
obj-$(CONFIG_EDAC_OCTEON_LMC) += octeon_edac-lmc.o
obj-$(CONFIG_EDAC_OCTEON_PCI) += octeon_edac-pci.o
/*
* 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) 2009 Wind River Systems,
* written by Ralf Baechle <ralf@linux-mips.org>
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/edac.h>
#include <asm/octeon/cvmx.h>
#include "edac_core.h"
#include "edac_module.h"
#define EDAC_MOD_STR "octeon-l2c"
static void co_l2c_poll(struct edac_device_ctl_info *l2c)
{
union cvmx_l2t_err l2t_err;
l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
if (l2t_err.s.sec_err) {
edac_device_handle_ce(l2c, 0, 0,
"Single bit error (corrected)");
l2t_err.s.sec_err = 1; /* Reset */
cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64);
}
if (l2t_err.s.ded_err) {
edac_device_handle_ue(l2c, 0, 0,
"Double bit error (corrected)");
l2t_err.s.ded_err = 1; /* Reset */
cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64);
}
}
static int __devinit co_l2c_probe(struct platform_device *pdev)
{
struct edac_device_ctl_info *l2c;
union cvmx_l2t_err l2t_err;
int res = 0;
l2c = edac_device_alloc_ctl_info(0, "l2c", 1, NULL, 0, 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";
l2c->edac_check = co_l2c_poll;
if (edac_device_add_device(l2c) > 0) {
pr_err("%s: edac_device_add_device() failed\n", __func__);
goto err;
}
l2t_err.u64 = cvmx_read_csr(CVMX_L2T_ERR);
l2t_err.s.sec_intena = 0; /* We poll */
l2t_err.s.ded_intena = 0;
l2t_err.s.sec_err = 1; /* Clear, just in case */
l2t_err.s.ded_err = 1;
cvmx_write_csr(CVMX_L2T_ERR, l2t_err.u64);
return 0;
err:
edac_device_free_ctl_info(l2c);
return res;
}
static int co_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 co_l2c_driver = {
.probe = co_l2c_probe,
.remove = co_l2c_remove,
.driver = {
.name = "co_l2c_edac",
}
};
static int __init co_edac_init(void)
{
int ret;
ret = platform_driver_register(&co_l2c_driver);
if (ret)
pr_warning(EDAC_MOD_STR " EDAC failed to register\n");
return ret;
}
static void __exit co_edac_exit(void)
{
platform_driver_unregister(&co_l2c_driver);
}
module_init(co_edac_init);
module_exit(co_edac_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
/*
* 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) 2009 Wind River Systems,
* written by Ralf Baechle <ralf@linux-mips.org>
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/edac.h>
#include <asm/octeon/cvmx.h>
#include "edac_core.h"
#include "edac_module.h"
#include "octeon_edac-lmc.h"
#define EDAC_MOD_STR "octeon"
static struct mem_ctl_info *mc_cavium;
static void *lmc_base;
static void co_lmc_poll(struct mem_ctl_info *mci)
{
union lmc_mem_cfg0 cfg0;
union lmc_fadr fadr;
char msg[64];
fadr.u64 = readq(lmc_base + LMC_FADR);
cfg0.u64 = readq(lmc_base + LMC_MEM_CFG0);
snprintf(msg, sizeof(msg), "DIMM %d rank %d bank %d row %d col %d",
fadr.fdimm, fadr.fbunk, fadr.fbank, fadr.frow, fadr.fcol);
if (cfg0.sec_err) {
edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, 0, 0, 0, -1, -1, -1,
msg, "");
cfg0.intr_sec_ena = -1; /* Done, re-arm */
}
if (cfg0.ded_err) {
edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0, -1, -1, -1,
msg, "");
cfg0.intr_ded_ena = -1; /* Done, re-arm */
}
writeq(cfg0.u64, lmc_base + LMC_MEM_CFG0);
}
static int __devinit co_lmc_probe(struct platform_device *pdev)
{
struct mem_ctl_info *mci;
union lmc_mem_cfg0 cfg0;
int res = 0;
mci = edac_mc_alloc(0, 0, 0, 0);
if (!mci)
return -ENOMEM;
mci->pdev = &pdev->dev;
platform_set_drvdata(pdev, mci);
mci->dev_name = dev_name(&pdev->dev);
mci->mod_name = "octeon-lmc";
mci->ctl_name = "co_lmc_err";
mci->edac_check = co_lmc_poll;
if (edac_mc_add_mc(mci) > 0) {
pr_err("%s: edac_mc_add_mc() failed\n", __func__);
goto err;
}
cfg0.u64 = readq(lmc_base + LMC_MEM_CFG0); /* We poll */
cfg0.intr_ded_ena = 0;
cfg0.intr_sec_ena = 0;
writeq(cfg0.u64, lmc_base + LMC_MEM_CFG0);
mc_cavium = mci;
return 0;
err:
edac_mc_free(mci);
return res;
}
static int co_lmc_remove(struct platform_device *pdev)
{
struct mem_ctl_info *mci = platform_get_drvdata(pdev);
mc_cavium = NULL;
edac_mc_del_mc(&pdev->dev);
edac_mc_free(mci);
return 0;
}
static struct platform_driver co_lmc_driver = {
.probe = co_lmc_probe,
.remove = co_lmc_remove,
.driver = {
.name = "co_lmc_edac",
}
};
static int __init co_edac_init(void)
{
union lmc_mem_cfg0 cfg0;
int ret;
lmc_base = ioremap_nocache(LMC_BASE, LMC_SIZE);
if (!lmc_base)
return -ENOMEM;
cfg0.u64 = readq(lmc_base + LMC_MEM_CFG0);
if (!cfg0.ecc_ena) {
pr_info(EDAC_MOD_STR " LMC EDAC: ECC disabled, good bye\n");
ret = -ENODEV;
goto out;
}
ret = platform_driver_register(&co_lmc_driver);
if (ret) {
pr_warning(EDAC_MOD_STR " LMC EDAC failed to register\n");
goto out;
}
return ret;
out:
iounmap(lmc_base);
return ret;
}
static void __exit co_edac_exit(void)
{
platform_driver_unregister(&co_lmc_driver);
iounmap(lmc_base);
}
module_init(co_edac_init);
module_exit(co_edac_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
/*
* LMC Registers, see chapter 2.5
*
* These are RSL Type registers and are accessed indirectly across the
* I/O bus, so accesses are slowish. Not that it matters. Any size load is
* ok but stores must be 64-bit.
*/
#define LMC_BASE 0x0001180088000000
#define LMC_SIZE 0xb8
#define LMC_MEM_CFG0 0x0000000000000000
#define LMC_MEM_CFG1 0x0000000000000008
#define LMC_CTL 0x0000000000000010
#define LMC_DDR2_CTL 0x0000000000000018
#define LMC_FADR 0x0000000000000020
#define LMC_FADR_FDIMM
#define LMC_FADR_FBUNK
#define LMC_FADR_FBANK
#define LMC_FADR_FROW
#define LMC_FADR_FCOL
#define LMC_COMP_CTL 0x0000000000000028
#define LMC_WODT_CTL 0x0000000000000030
#define LMC_ECC_SYND 0x0000000000000038
#define LMC_IFB_CNT_LO 0x0000000000000048
#define LMC_IFB_CNT_HI 0x0000000000000050
#define LMC_OPS_CNT_LO 0x0000000000000058
#define LMC_OPS_CNT_HI 0x0000000000000060
#define LMC_DCLK_CNT_LO 0x0000000000000068
#define LMC_DCLK_CNT_HI 0x0000000000000070
#define LMC_DELAY_CFG 0x0000000000000088
#define LMC_CTL1 0x0000000000000090
#define LMC_DUAL_MEM_CONFIG 0x0000000000000098
#define LMC_RODT_COMP_CTL 0x00000000000000A0
#define LMC_PLL_CTL 0x00000000000000A8
#define LMC_PLL_STATUS 0x00000000000000B0
union lmc_mem_cfg0 {
uint64_t u64;
struct {
uint64_t reserved_32_63:32;
uint64_t reset:1;
uint64_t silo_qc:1;
uint64_t bunk_ena:1;
uint64_t ded_err:4;
uint64_t sec_err:4;
uint64_t intr_ded_ena:1;
uint64_t intr_sec_ena:1;
uint64_t reserved_15_18:4;
uint64_t ref_int:5;
uint64_t pbank_lsb:4;
uint64_t row_lsb:3;
uint64_t ecc_ena:1;
uint64_t init_start:1;
};
};
union lmc_fadr {
uint64_t u64;
struct {
uint64_t reserved_32_63:32;
uint64_t fdimm:2;
uint64_t fbunk:1;
uint64_t fbank:3;
uint64_t frow:14;
uint64_t fcol:12;
};
};
union lmc_ecc_synd {
uint64_t u64;
struct {
uint64_t reserved_32_63:32;
uint64_t mrdsyn3:8;
uint64_t mrdsyn2:8;
uint64_t mrdsyn1:8;
uint64_t mrdsyn0:8;
};
};
/*
* 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) 2009 Wind River Systems,
* written by Ralf Baechle <ralf@linux-mips.org>
*/
#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 <asm/octeon/cvmx.h>
#include <asm/mipsregs.h>
#define EDAC_MOD_STR "octeon"
extern int register_co_cache_error_notifier(struct notifier_block *nb);
extern int unregister_co_cache_error_notifier(struct notifier_block *nb);
extern unsigned long long cache_err_dcache[NR_CPUS];
static struct edac_device_ctl_info *ed_cavium;
/*
* EDAC CPU cache error callback
*
*/
static int co_cache_error_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
unsigned int core = cvmx_get_core_num();
unsigned int cpu = smp_processor_id();
uint64_t icache_err = read_octeon_c0_icacheerr();
struct edac_device_ctl_info *ed = ed_cavium;
edac_device_printk(ed, KERN_ERR,
"Cache error exception on core %d / processor %d:\n",
core, cpu);
edac_device_printk(ed, KERN_ERR,
"cp0_errorepc == %lx\n", read_c0_errorepc());
if (icache_err & 1) {
edac_device_printk(ed, KERN_ERR, "CacheErr (Icache) == %llx\n",
(unsigned long long)icache_err);
write_octeon_c0_icacheerr(0);
edac_device_handle_ce(ed, 0, 0, ed->ctl_name);
}
if (cache_err_dcache[core] & 1) {
edac_device_printk(ed, KERN_ERR, "CacheErr (Dcache) == %llx\n",
(unsigned long long)cache_err_dcache[core]);
cache_err_dcache[core] = 0;
edac_device_handle_ue(ed, 0, 0, ed->ctl_name);
}
return NOTIFY_DONE;
}
static struct notifier_block co_cache_error_notifier = {
.notifier_call = co_cache_error_event,
};
static int __devinit co_cache_error_probe(struct platform_device *pdev)
{
struct edac_device_ctl_info *ed;
int res = 0;
ed = edac_device_alloc_ctl_info(0, "cpu", 1, NULL, 0, 0, NULL, 0,
edac_device_alloc_index());
ed->dev = &pdev->dev;
platform_set_drvdata(pdev, ed);
ed->dev_name = dev_name(&pdev->dev);
ed->mod_name = "octeon-cpu";
ed->ctl_name = "co_cpu_err";
if (edac_device_add_device(ed) > 0) {
pr_err("%s: edac_device_add_device() failed\n", __func__);
goto err;
}
register_co_cache_error_notifier(&co_cache_error_notifier);
ed_cavium = ed;
return 0;
err:
edac_device_free_ctl_info(ed);
return res;
}
static int co_cache_error_remove(struct platform_device *pdev)
{
struct edac_device_ctl_info *ed = platform_get_drvdata(pdev);
unregister_co_cache_error_notifier(&co_cache_error_notifier);
ed_cavium = NULL;
edac_device_del_device(&pdev->dev);
edac_device_free_ctl_info(ed);
return 0;
}
static struct platform_driver co_cache_error_driver = {
.probe = co_cache_error_probe,
.remove = co_cache_error_remove,
.driver = {
.name = "co_pc_edac",
}
};
static int __init co_edac_init(void)
{
int ret;
ret = platform_driver_register(&co_cache_error_driver);
if (ret)
pr_warning(EDAC_MOD_STR "CPU err failed to register\n");
return ret;
}
static void __exit co_edac_exit(void)
{
platform_driver_unregister(&co_cache_error_driver);
}
module_init(co_edac_init);
module_exit(co_edac_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
/*
* 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) 2009 Wind River Systems,
* written by Ralf Baechle <ralf@linux-mips.org>
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/edac.h>
#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-npi-defs.h>
#include <asm/octeon/cvmx-pci-defs.h>
#include <asm/octeon/octeon.h>
#include "edac_core.h"
#include "edac_module.h"
#define EDAC_MOD_STR "octeon"
static void co_pci_poll(struct edac_pci_ctl_info *pci)
{
union cvmx_pci_cfg01 cfg01;
cfg01.u32 = octeon_npi_read32(CVMX_NPI_PCI_CFG01);
if (cfg01.s.dpe) { /* Detected parity error */
edac_pci_handle_pe(pci, pci->ctl_name);
cfg01.s.dpe = 1; /* Reset */
octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
}
if (cfg01.s.sse) {
edac_pci_handle_npe(pci, "Signaled System Error");
cfg01.s.sse = 1; /* Reset */
octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
}
if (cfg01.s.rma) {
edac_pci_handle_npe(pci, "Received Master Abort");
cfg01.s.rma = 1; /* Reset */
octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
}
if (cfg01.s.rta) {
edac_pci_handle_npe(pci, "Received Target Abort");
cfg01.s.rta = 1; /* Reset */
octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
}
if (cfg01.s.sta) {
edac_pci_handle_npe(pci, "Signaled Target Abort");
cfg01.s.sta = 1; /* Reset */
octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
}
if (cfg01.s.mdpe) {
edac_pci_handle_npe(pci, "Master Data Parity Error");
cfg01.s.mdpe = 1; /* Reset */
octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
}
if (cfg01.s.mdpe) {
edac_pci_handle_npe(pci, "Master Data Parity Error");
cfg01.s.mdpe = 1; /* Reset */
octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32);
}
}
static int __devinit co_pci_probe(struct platform_device *pdev)
{
struct edac_pci_ctl_info *pci;
int res = 0;
pci = edac_pci_alloc_ctl_info(0, "octeon_pci_err");
if (!pci)
return -ENOMEM;
pci->dev = &pdev->dev;
platform_set_drvdata(pdev, pci);
pci->dev_name = dev_name(&pdev->dev);
pci->mod_name = "octeon-pci";
pci->ctl_name = "octeon_pci_err";
pci->edac_check = co_pci_poll;
if (edac_pci_add_device(pci, 0) > 0) {
pr_err("%s: edac_pci_add_device() failed\n", __func__);
goto err;
}
return 0;
err:
edac_pci_free_ctl_info(pci);
return res;
}
static int co_pci_remove(struct platform_device *pdev)
{
struct edac_pci_ctl_info *pci = platform_get_drvdata(pdev);
edac_pci_del_device(&pdev->dev);
edac_pci_free_ctl_info(pci);
return 0;
}
static struct platform_driver co_pci_driver = {
.probe = co_pci_probe,
.remove = co_pci_remove,
.driver = {
.name = "co_pci_edac",
}
};
static int __init co_edac_init(void)
{
int ret;
ret = platform_driver_register(&co_pci_driver);
if (ret)
pr_warning(EDAC_MOD_STR " PCI EDAC failed to register\n");
return ret;
}
static void __exit co_edac_exit(void)
{
platform_driver_unregister(&co_pci_driver);
}
module_init(co_edac_init);
module_exit(co_edac_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Ralf Baechle <ralf@linux-mips.org>");
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