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Merge branch 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac

Browse source 
Pull EDAC fixes and ghes-edac from Mauro Carvalho Chehab:
 "For:

   - Some fixes at edac drivers (i7core_edac, sb_edac, i3200_edac);
   - error injection support for i5100, when EDAC debug is enabled;
   - fix edac when it is loaded builtin (early init for the subsystem);
   - a "Firmware First" EDAC driver, allowing ghes to report errors via
     EDAC (ghes-edac).

  With regards to ghes-edac, this fixes a longstanding BZ at Red Hat
  that happens with Nehalem and Sandy Bridge CPUs: when both GHES and
  i7core_edac or sb_edac are running, the error reports are
  unpredictable, as both BIOS and OS race to access the registers.  With
  ghes-edac, the EDAC core will refuse to register any other concurrent
  memory error driver.

  This patchset moves the ghes struct definitions to a separate header
  file (include/acpi/ghes.h) and adds 3 hooks at apei/ghes.c to
  register/unregister and to report errors via ghes-edac.  Those changes
  were acked by ghes driver maintainer (Huang)."

* 'linux_next' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (30 commits)
  i5100_edac: convert to use simple_open()
  ghes_edac: fix to use list_for_each_entry_safe() when delete list items
  ghes_edac: Fix RAS tracing
  ghes_edac: Make it compliant with UEFI spec 2.3.1
  ghes_edac: Improve driver's printk messages
  ghes_edac: Don't credit the same memory dimm twice
  ghes_edac: do a better job of filling EDAC DIMM info
  ghes_edac: add support for reporting errors via EDAC
  ghes_edac: Register at EDAC core the BIOS report
  ghes: add the needed hooks for EDAC error report
  ghes: move structures/enum to a header file
  edac: add support for error type "Info"
  edac: add support for raw error reports
  edac: reduce stack pressure by using a pre-allocated buffer
  edac: lock module owner to avoid error report conflicts
  edac: remove proc_name from mci structure
  edac: add a new memory layer type
  edac: initialize the core earlier
  edac: better report error conditions in debug mode
  i5100_edac: Remove two checkpatch warnings
  ...
This commit is contained in:
Linus Torvalds 2013-02-28 20:42:33 -08:00
commit ad6c2c2eb3
18 changed files with 1077 additions and 140 deletions
Download patch file Download diff file Expand all files Collapse all files

23
drivers/edac/Kconfig
View file

@ -80,6 +80,29 @@ config EDAC_MM_EDAC
occurred so that a particular failing memory module can be
replaced. If unsure, select 'Y'.
config EDAC_GHES
bool "Output ACPI APEI/GHES BIOS detected errors via EDAC"
depends on ACPI_APEI_GHES && (EDAC_MM_EDAC=y)
default y
help
Not all machines support hardware-driven error report. Some of those
provide a BIOS-driven error report mechanism via ACPI, using the
APEI/GHES driver. By enabling this option, the error reports provided
by GHES are sent to userspace via the EDAC API.
When this option is enabled, it will disable the hardware-driven
mechanisms, if a GHES BIOS is detected, entering into the
"Firmware First" mode.
It should be noticed that keeping both GHES and a hardware-driven
error mechanism won't work well, as BIOS will race with OS, while
reading the error registers. So, if you want to not use "Firmware
first" GHES error mechanism, you should disable GHES either at
compilation time or by passing "ghes.disable=1" Kernel parameter
at boot time.
In doubt, say 'Y'.
config EDAC_AMD64
tristate "AMD64 (Opteron, Athlon64) K8, F10h"
depends on EDAC_MM_EDAC && AMD_NB && X86_64 && EDAC_DECODE_MCE

1
drivers/edac/Makefile
View file

@ -16,6 +16,7 @@ ifdef CONFIG_PCI
edac_core-y += edac_pci.o edac_pci_sysfs.o
endif
obj-$(CONFIG_EDAC_GHES) += ghes_edac.o
obj-$(CONFIG_EDAC_MCE_INJ) += mce_amd_inj.o
edac_mce_amd-y := mce_amd.o

5
drivers/edac/edac_core.h
View file

@ -453,6 +453,11 @@ extern struct mem_ctl_info *find_mci_by_dev(struct device *dev);
extern struct mem_ctl_info *edac_mc_del_mc(struct device *dev);
extern int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci,
unsigned long page);
void edac_raw_mc_handle_error(const enum hw_event_mc_err_type type,
struct mem_ctl_info *mci,
struct edac_raw_error_desc *e);
void edac_mc_handle_error(const enum hw_event_mc_err_type type,
struct mem_ctl_info *mci,
const u16 error_count,

152
drivers/edac/edac_mc.c
View file

@ -42,6 +42,12 @@
static DEFINE_MUTEX(mem_ctls_mutex);
static LIST_HEAD(mc_devices);
/*
* Used to lock EDAC MC to just one module, avoiding two drivers e. g.
* apei/ghes and i7core_edac to be used at the same time.
*/
static void const *edac_mc_owner;
unsigned edac_dimm_info_location(struct dimm_info *dimm, char *buf,
unsigned len)
{
@ -441,13 +447,6 @@ struct mem_ctl_info *edac_mc_alloc(unsigned mc_num,
mci->op_state = OP_ALLOC;
/* at this point, the root kobj is valid, and in order to
* 'free' the object, then the function:
* edac_mc_unregister_sysfs_main_kobj() must be called
* which will perform kobj unregistration and the actual free
* will occur during the kobject callback operation
*/
return mci;
error:
@ -666,9 +665,9 @@ fail1:
return 1;
}
static void del_mc_from_global_list(struct mem_ctl_info *mci)
static int del_mc_from_global_list(struct mem_ctl_info *mci)
{
atomic_dec(&edac_handlers);
int handlers = atomic_dec_return(&edac_handlers);
list_del_rcu(&mci->link);
/* these are for safe removal of devices from global list while
@ -676,6 +675,8 @@ static void del_mc_from_global_list(struct mem_ctl_info *mci)
*/
synchronize_rcu();
INIT_LIST_HEAD(&mci->link);
return handlers;
}
/**
@ -719,6 +720,7 @@ EXPORT_SYMBOL(edac_mc_find);
/* FIXME - should a warning be printed if no error detection? correction? */
int edac_mc_add_mc(struct mem_ctl_info *mci)
{
int ret = -EINVAL;
edac_dbg(0, "\n");
#ifdef CONFIG_EDAC_DEBUG
@ -749,6 +751,11 @@ int edac_mc_add_mc(struct mem_ctl_info *mci)
#endif
mutex_lock(&mem_ctls_mutex);
if (edac_mc_owner && edac_mc_owner != mci->mod_name) {
ret = -EPERM;
goto fail0;
}
if (add_mc_to_global_list(mci))
goto fail0;
@ -775,6 +782,8 @@ int edac_mc_add_mc(struct mem_ctl_info *mci)
edac_mc_printk(mci, KERN_INFO, "Giving out device to '%s' '%s':"
" DEV %s\n", mci->mod_name, mci->ctl_name, edac_dev_name(mci));
edac_mc_owner = mci->mod_name;
mutex_unlock(&mem_ctls_mutex);
return 0;
@ -783,7 +792,7 @@ fail1:
fail0:
mutex_unlock(&mem_ctls_mutex);
return 1;
return ret;
}
EXPORT_SYMBOL_GPL(edac_mc_add_mc);
@ -809,7 +818,8 @@ struct mem_ctl_info *edac_mc_del_mc(struct device *dev)
return NULL;
}
del_mc_from_global_list(mci);
if (!del_mc_from_global_list(mci))
edac_mc_owner = NULL;
mutex_unlock(&mem_ctls_mutex);
/* flush workq processes */
@ -907,6 +917,7 @@ const char *edac_layer_name[] = {
[EDAC_MC_LAYER_CHANNEL] = "channel",
[EDAC_MC_LAYER_SLOT] = "slot",
[EDAC_MC_LAYER_CHIP_SELECT] = "csrow",
[EDAC_MC_LAYER_ALL_MEM] = "memory",
};
EXPORT_SYMBOL_GPL(edac_layer_name);
@ -1054,7 +1065,46 @@ static void edac_ue_error(struct mem_ctl_info *mci,
edac_inc_ue_error(mci, enable_per_layer_report, pos, error_count);
}
#define OTHER_LABEL " or "
/**
* edac_raw_mc_handle_error - reports a memory event to userspace without doing
* anything to discover the error location
*
* @type: severity of the error (CE/UE/Fatal)
* @mci: a struct mem_ctl_info pointer
* @e: error description
*
* This raw function is used internally by edac_mc_handle_error(). It should
* only be called directly when the hardware error come directly from BIOS,
* like in the case of APEI GHES driver.
*/
void edac_raw_mc_handle_error(const enum hw_event_mc_err_type type,
struct mem_ctl_info *mci,
struct edac_raw_error_desc *e)
{
char detail[80];
int pos[EDAC_MAX_LAYERS] = { e->top_layer, e->mid_layer, e->low_layer };
/* Memory type dependent details about the error */
if (type == HW_EVENT_ERR_CORRECTED) {
snprintf(detail, sizeof(detail),
"page:0x%lx offset:0x%lx grain:%ld syndrome:0x%lx",
e->page_frame_number, e->offset_in_page,
e->grain, e->syndrome);
edac_ce_error(mci, e->error_count, pos, e->msg, e->location, e->label,
detail, e->other_detail, e->enable_per_layer_report,
e->page_frame_number, e->offset_in_page, e->grain);
} else {
snprintf(detail, sizeof(detail),
"page:0x%lx offset:0x%lx grain:%ld",
e->page_frame_number, e->offset_in_page, e->grain);
edac_ue_error(mci, e->error_count, pos, e->msg, e->location, e->label,
detail, e->other_detail, e->enable_per_layer_report);
}
}
EXPORT_SYMBOL_GPL(edac_raw_mc_handle_error);
/**
* edac_mc_handle_error - reports a memory event to userspace
@ -1086,19 +1136,27 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
const char *msg,
const char *other_detail)
{
/* FIXME: too much for stack: move it to some pre-alocated area */
char detail[80], location[80];
char label[(EDAC_MC_LABEL_LEN + 1 + sizeof(OTHER_LABEL)) * mci->tot_dimms];
char *p;
int row = -1, chan = -1;
int pos[EDAC_MAX_LAYERS] = { top_layer, mid_layer, low_layer };
int i;
long grain;
bool enable_per_layer_report = false;
int i, n_labels = 0;
u8 grain_bits;
struct edac_raw_error_desc *e = &mci->error_desc;
edac_dbg(3, "MC%d\n", mci->mc_idx);
/* Fills the error report buffer */
memset(e, 0, sizeof (*e));
e->error_count = error_count;
e->top_layer = top_layer;
e->mid_layer = mid_layer;
e->low_layer = low_layer;
e->page_frame_number = page_frame_number;
e->offset_in_page = offset_in_page;
e->syndrome = syndrome;
e->msg = msg;
e->other_detail = other_detail;
/*
* Check if the event report is consistent and if the memory
* location is known. If it is known, enable_per_layer_report will be
@ -1121,7 +1179,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
pos[i] = -1;
}
if (pos[i] >= 0)
enable_per_layer_report = true;
e->enable_per_layer_report = true;
}
/*
@ -1135,8 +1193,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
* where each memory belongs to a separate channel within the same
* branch.
*/
grain = 0;
p = label;
p = e->label;
*p = '\0';
for (i = 0; i < mci->tot_dimms; i++) {
@ -1150,8 +1207,8 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
continue;
/* get the max grain, over the error match range */
if (dimm->grain > grain)
grain = dimm->grain;
if (dimm->grain > e->grain)
e->grain = dimm->grain;
/*
* If the error is memory-controller wide, there's no need to
@ -1159,8 +1216,13 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
* channel/memory controller/... may be affected.
* Also, don't show errors for empty DIMM slots.
*/
if (enable_per_layer_report && dimm->nr_pages) {
if (p != label) {
if (e->enable_per_layer_report && dimm->nr_pages) {
if (n_labels >= EDAC_MAX_LABELS) {
e->enable_per_layer_report = false;
break;
}
n_labels++;
if (p != e->label) {
strcpy(p, OTHER_LABEL);
p += strlen(OTHER_LABEL);
}
@ -1187,12 +1249,12 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
}
}
if (!enable_per_layer_report) {
strcpy(label, "any memory");
if (!e->enable_per_layer_report) {
strcpy(e->label, "any memory");
} else {
edac_dbg(4, "csrow/channel to increment: (%d,%d)\n", row, chan);
if (p == label)
strcpy(label, "unknown memory");
if (p == e->label)
strcpy(e->label, "unknown memory");
if (type == HW_EVENT_ERR_CORRECTED) {
if (row >= 0) {
mci->csrows[row]->ce_count += error_count;
@ -1205,7 +1267,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
}
/* Fill the RAM location data */
p = location;
p = e->location;
for (i = 0; i < mci->n_layers; i++) {
if (pos[i] < 0)
@ -1215,32 +1277,16 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
edac_layer_name[mci->layers[i].type],
pos[i]);
}
if (p > location)
if (p > e->location)
*(p - 1) = '\0';
/* Report the error via the trace interface */
grain_bits = fls_long(grain) + 1;
trace_mc_event(type, msg, label, error_count,
mci->mc_idx, top_layer, mid_layer, low_layer,
PAGES_TO_MiB(page_frame_number) | offset_in_page,
grain_bits, syndrome, other_detail);
grain_bits = fls_long(e->grain) + 1;
trace_mc_event(type, e->msg, e->label, e->error_count,
mci->mc_idx, e->top_layer, e->mid_layer, e->low_layer,
PAGES_TO_MiB(e->page_frame_number) | e->offset_in_page,
grain_bits, e->syndrome, e->other_detail);
/* Memory type dependent details about the error */
if (type == HW_EVENT_ERR_CORRECTED) {
snprintf(detail, sizeof(detail),
"page:0x%lx offset:0x%lx grain:%ld syndrome:0x%lx",
page_frame_number, offset_in_page,
grain, syndrome);
edac_ce_error(mci, error_count, pos, msg, location, label,
detail, other_detail, enable_per_layer_report,
page_frame_number, offset_in_page, grain);
} else {
snprintf(detail, sizeof(detail),
"page:0x%lx offset:0x%lx grain:%ld",
page_frame_number, offset_in_page, grain);
edac_ue_error(mci, error_count, pos, msg, location, label,
detail, other_detail, enable_per_layer_report);
}
edac_raw_mc_handle_error(type, mci, e);
}
EXPORT_SYMBOL_GPL(edac_mc_handle_error);

36
drivers/edac/edac_mc_sysfs.c
View file

@ -7,7 +7,7 @@
*
* Written Doug Thompson <norsk5@xmission.com> www.softwarebitmaker.com
*
* (c) 2012 - Mauro Carvalho Chehab <mchehab@redhat.com>
* (c) 2012-2013 - Mauro Carvalho Chehab <mchehab@redhat.com>
* The entire API were re-written, and ported to use struct device
*
*/
@ -429,8 +429,12 @@ static int edac_create_csrow_objects(struct mem_ctl_info *mci)
if (!nr_pages_per_csrow(csrow))
continue;
err = edac_create_csrow_object(mci, mci->csrows[i], i);
if (err < 0)
if (err < 0) {
edac_dbg(1,
"failure: create csrow objects for csrow %d\n",
i);
goto error;
}
}
return 0;
@ -677,9 +681,6 @@ static ssize_t mci_sdram_scrub_rate_store(struct device *dev,
unsigned long bandwidth = 0;
int new_bw = 0;
if (!mci->set_sdram_scrub_rate)
return -ENODEV;
if (strict_strtoul(data, 10, &bandwidth) < 0)
return -EINVAL;
@ -703,9 +704,6 @@ static ssize_t mci_sdram_scrub_rate_show(struct device *dev,
struct mem_ctl_info *mci = to_mci(dev);
int bandwidth = 0;
if (!mci->get_sdram_scrub_rate)
return -ENODEV;
bandwidth = mci->get_sdram_scrub_rate(mci);
if (bandwidth < 0) {
edac_printk(KERN_DEBUG, EDAC_MC, "Error reading scrub rate\n");
@ -866,8 +864,7 @@ DEVICE_ATTR(ce_count, S_IRUGO, mci_ce_count_show, NULL);
DEVICE_ATTR(max_location, S_IRUGO, mci_max_location_show, NULL);
/* memory scrubber attribute file */
DEVICE_ATTR(sdram_scrub_rate, S_IRUGO | S_IWUSR, mci_sdram_scrub_rate_show,
mci_sdram_scrub_rate_store);
DEVICE_ATTR(sdram_scrub_rate, 0, NULL, NULL);
static struct attribute *mci_attrs[] = {
&dev_attr_reset_counters.attr,
@ -878,7 +875,6 @@ static struct attribute *mci_attrs[] = {
&dev_attr_ce_noinfo_count.attr,
&dev_attr_ue_count.attr,
&dev_attr_ce_count.attr,
&dev_attr_sdram_scrub_rate.attr,
&dev_attr_max_location.attr,
NULL
};
@ -1007,11 +1003,28 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci)
edac_dbg(0, "creating device %s\n", dev_name(&mci->dev));
err = device_add(&mci->dev);
if (err < 0) {
edac_dbg(1, "failure: create device %s\n", dev_name(&mci->dev));
bus_unregister(&mci->bus);
kfree(mci->bus.name);
return err;
}
if (mci->set_sdram_scrub_rate || mci->get_sdram_scrub_rate) {
if (mci->get_sdram_scrub_rate) {
dev_attr_sdram_scrub_rate.attr.mode |= S_IRUGO;
dev_attr_sdram_scrub_rate.show = &mci_sdram_scrub_rate_show;
}
if (mci->set_sdram_scrub_rate) {
dev_attr_sdram_scrub_rate.attr.mode |= S_IWUSR;
dev_attr_sdram_scrub_rate.store = &mci_sdram_scrub_rate_store;
}
err = device_create_file(&mci->dev,
&dev_attr_sdram_scrub_rate);
if (err) {
edac_dbg(1, "failure: create sdram_scrub_rate\n");
goto fail2;
}
}
/*
* Create the dimm/rank devices
*/
@ -1056,6 +1069,7 @@ fail:
continue;
device_unregister(&dimm->dev);
}
fail2:
device_unregister(&mci->dev);
bus_unregister(&mci->bus);
kfree(mci->bus.name);

2
drivers/edac/edac_module.c
View file

@ -146,7 +146,7 @@ static void __exit edac_exit(void)
/*
* Inform the kernel of our entry and exit points
*/
module_init(edac_init);
subsys_initcall(edac_init);
module_exit(edac_exit);
MODULE_LICENSE("GPL");

2
drivers/edac/edac_pci_sysfs.c
View file

@ -429,8 +429,8 @@ static void edac_pci_main_kobj_teardown(void)
if (atomic_dec_return(&edac_pci_sysfs_refcount) == 0) {
edac_dbg(0, "called kobject_put on main kobj\n");
kobject_put(edac_pci_top_main_kobj);
edac_put_sysfs_subsys();
}
edac_put_sysfs_subsys();
}
/*

537
drivers/edac/ghes_edac.c Normal file
View file

@ -0,0 +1,537 @@
/*
* GHES/EDAC Linux driver
*
* This file may be distributed under the terms of the GNU General Public
* License version 2.
*
* Copyright (c) 2013 by Mauro Carvalho Chehab <mchehab@redhat.com>
*
* Red Hat Inc. http://www.redhat.com
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <acpi/ghes.h>
#include <linux/edac.h>
#include <linux/dmi.h>
#include "edac_core.h"
#include <ras/ras_event.h>
#define GHES_EDAC_REVISION " Ver: 1.0.0"
struct ghes_edac_pvt {
struct list_head list;
struct ghes *ghes;
struct mem_ctl_info *mci;
/* Buffers for the error handling routine */
char detail_location[240];
char other_detail[160];
char msg[80];
};
static LIST_HEAD(ghes_reglist);
static DEFINE_MUTEX(ghes_edac_lock);
static int ghes_edac_mc_num;
/* Memory Device - Type 17 of SMBIOS spec */
struct memdev_dmi_entry {
u8 type;
u8 length;
u16 handle;
u16 phys_mem_array_handle;
u16 mem_err_info_handle;
u16 total_width;
u16 data_width;
u16 size;
u8 form_factor;
u8 device_set;
u8 device_locator;
u8 bank_locator;
u8 memory_type;
u16 type_detail;
u16 speed;
u8 manufacturer;
u8 serial_number;
u8 asset_tag;
u8 part_number;
u8 attributes;
u32 extended_size;
u16 conf_mem_clk_speed;
} __attribute__((__packed__));
struct ghes_edac_dimm_fill {
struct mem_ctl_info *mci;
unsigned count;
};
char *memory_type[] = {
[MEM_EMPTY] = "EMPTY",
[MEM_RESERVED] = "RESERVED",
[MEM_UNKNOWN] = "UNKNOWN",
[MEM_FPM] = "FPM",
[MEM_EDO] = "EDO",
[MEM_BEDO] = "BEDO",
[MEM_SDR] = "SDR",
[MEM_RDR] = "RDR",
[MEM_DDR] = "DDR",
[MEM_RDDR] = "RDDR",
[MEM_RMBS] = "RMBS",
[MEM_DDR2] = "DDR2",
[MEM_FB_DDR2] = "FB_DDR2",
[MEM_RDDR2] = "RDDR2",
[MEM_XDR] = "XDR",
[MEM_DDR3] = "DDR3",
[MEM_RDDR3] = "RDDR3",
};
static void ghes_edac_count_dimms(const struct dmi_header *dh, void *arg)
{
int *num_dimm = arg;
if (dh->type == DMI_ENTRY_MEM_DEVICE)
(*num_dimm)++;
}
static void ghes_edac_dmidecode(const struct dmi_header *dh, void *arg)
{
struct ghes_edac_dimm_fill *dimm_fill = arg;
struct mem_ctl_info *mci = dimm_fill->mci;
if (dh->type == DMI_ENTRY_MEM_DEVICE) {
struct memdev_dmi_entry *entry = (struct memdev_dmi_entry *)dh;
struct dimm_info *dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
mci->n_layers,
dimm_fill->count, 0, 0);
if (entry->size == 0xffff) {
pr_info("Can't get DIMM%i size\n",
dimm_fill->count);
dimm->nr_pages = MiB_TO_PAGES(32);/* Unknown */
} else if (entry->size == 0x7fff) {
dimm->nr_pages = MiB_TO_PAGES(entry->extended_size);
} else {
if (entry->size & 1 << 15)
dimm->nr_pages = MiB_TO_PAGES((entry->size &
0x7fff) << 10);
else
dimm->nr_pages = MiB_TO_PAGES(entry->size);
}
switch (entry->memory_type) {
case 0x12:
if (entry->type_detail & 1 << 13)
dimm->mtype = MEM_RDDR;
else
dimm->mtype = MEM_DDR;
break;
case 0x13:
if (entry->type_detail & 1 << 13)
dimm->mtype = MEM_RDDR2;
else
dimm->mtype = MEM_DDR2;
break;
case 0x14:
dimm->mtype = MEM_FB_DDR2;
break;
case 0x18:
if (entry->type_detail & 1 << 13)
dimm->mtype = MEM_RDDR3;
else
dimm->mtype = MEM_DDR3;
break;
default:
if (entry->type_detail & 1 << 6)
dimm->mtype = MEM_RMBS;
else if ((entry->type_detail & ((1 << 7) | (1 << 13)))
== ((1 << 7) | (1 << 13)))
dimm->mtype = MEM_RDR;
else if (entry->type_detail & 1 << 7)
dimm->mtype = MEM_SDR;
else if (entry->type_detail & 1 << 9)
dimm->mtype = MEM_EDO;
else
dimm->mtype = MEM_UNKNOWN;
}
/*
* Actually, we can only detect if the memory has bits for
* checksum or not
*/
if (entry->total_width == entry->data_width)
dimm->edac_mode = EDAC_NONE;
else
dimm->edac_mode = EDAC_SECDED;
dimm->dtype = DEV_UNKNOWN;
dimm->grain = 128; /* Likely, worse case */
/*
* FIXME: It shouldn't be hard to also fill the DIMM labels
*/
if (dimm->nr_pages) {
edac_dbg(1, "DIMM%i: %s size = %d MB%s\n",
dimm_fill->count, memory_type[dimm->mtype],
PAGES_TO_MiB(dimm->nr_pages),
(dimm->edac_mode != EDAC_NONE) ? "(ECC)" : "");
edac_dbg(2, "\ttype %d, detail 0x%02x, width %d(total %d)\n",
entry->memory_type, entry->type_detail,
entry->total_width, entry->data_width);
}
dimm_fill->count++;
}
}
void ghes_edac_report_mem_error(struct ghes *ghes, int sev,
struct cper_sec_mem_err *mem_err)
{
enum hw_event_mc_err_type type;
struct edac_raw_error_desc *e;
struct mem_ctl_info *mci;
struct ghes_edac_pvt *pvt = NULL;
char *p;
u8 grain_bits;
list_for_each_entry(pvt, &ghes_reglist, list) {
if (ghes == pvt->ghes)
break;
}
if (!pvt) {
pr_err("Internal error: Can't find EDAC structure\n");
return;
}
mci = pvt->mci;
e = &mci->error_desc;
/* Cleans the error report buffer */
memset(e, 0, sizeof (*e));
e->error_count = 1;
strcpy(e->label, "unknown label");
e->msg = pvt->msg;
e->other_detail = pvt->other_detail;
e->top_layer = -1;
e->mid_layer = -1;
e->low_layer = -1;
*pvt->other_detail = '\0';
*pvt->msg = '\0';
switch (sev) {
case GHES_SEV_CORRECTED:
type = HW_EVENT_ERR_CORRECTED;
break;
case GHES_SEV_RECOVERABLE:
type = HW_EVENT_ERR_UNCORRECTED;
break;
case GHES_SEV_PANIC:
type = HW_EVENT_ERR_FATAL;
break;
default:
case GHES_SEV_NO:
type = HW_EVENT_ERR_INFO;
}
edac_dbg(1, "error validation_bits: 0x%08llx\n",
(long long)mem_err->validation_bits);
/* Error type, mapped on e->msg */
if (mem_err->validation_bits & CPER_MEM_VALID_ERROR_TYPE) {
p = pvt->msg;
switch (mem_err->error_type) {
case 0:
p += sprintf(p, "Unknown");
break;
case 1:
p += sprintf(p, "No error");
break;
case 2:
p += sprintf(p, "Single-bit ECC");
break;
case 3:
p += sprintf(p, "Multi-bit ECC");
break;
case 4:
p += sprintf(p, "Single-symbol ChipKill ECC");
break;
case 5:
p += sprintf(p, "Multi-symbol ChipKill ECC");
break;
case 6:
p += sprintf(p, "Master abort");
break;
case 7:
p += sprintf(p, "Target abort");
break;
case 8:
p += sprintf(p, "Parity Error");
break;
case 9:
p += sprintf(p, "Watchdog timeout");
break;
case 10:
p += sprintf(p, "Invalid address");
break;
case 11:
p += sprintf(p, "Mirror Broken");
break;
case 12:
p += sprintf(p, "Memory Sparing");
break;
case 13:
p += sprintf(p, "Scrub corrected error");
break;
case 14:
p += sprintf(p, "Scrub uncorrected error");
break;
case 15:
p += sprintf(p, "Physical Memory Map-out event");
break;
default:
p += sprintf(p, "reserved error (%d)",
mem_err->error_type);
}
} else {
strcpy(pvt->msg, "unknown error");
}
/* Error address */
if (mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS) {
e->page_frame_number = mem_err->physical_addr >> PAGE_SHIFT;
e->offset_in_page = mem_err->physical_addr & ~PAGE_MASK;
}
/* Error grain */
if (mem_err->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS_MASK) {
e->grain = ~(mem_err->physical_addr_mask & ~PAGE_MASK);
}
/* Memory error location, mapped on e->location */
p = e->location;
if (mem_err->validation_bits & CPER_MEM_VALID_NODE)
p += sprintf(p, "node:%d ", mem_err->node);
if (mem_err->validation_bits & CPER_MEM_VALID_CARD)
p += sprintf(p, "card:%d ", mem_err->card);
if (mem_err->validation_bits & CPER_MEM_VALID_MODULE)
p += sprintf(p, "module:%d ", mem_err->module);
if (mem_err->validation_bits & CPER_MEM_VALID_BANK)
p += sprintf(p, "bank:%d ", mem_err->bank);
if (mem_err->validation_bits & CPER_MEM_VALID_ROW)
p += sprintf(p, "row:%d ", mem_err->row);
if (mem_err->validation_bits & CPER_MEM_VALID_COLUMN)
p += sprintf(p, "col:%d ", mem_err->column);
if (mem_err->validation_bits & CPER_MEM_VALID_BIT_POSITION)
p += sprintf(p, "bit_pos:%d ", mem_err->bit_pos);
if (p > e->location)
*(p - 1) = '\0';
/* All other fields are mapped on e->other_detail */
p = pvt->other_detail;
if (mem_err->validation_bits & CPER_MEM_VALID_ERROR_STATUS) {
u64 status = mem_err->error_status;
p += sprintf(p, "status(0x%016llx): ", (long long)status);
switch ((status >> 8) & 0xff) {
case 1:
p += sprintf(p, "Error detected internal to the component ");
break;
case 16:
p += sprintf(p, "Error detected in the bus ");
break;
case 4:
p += sprintf(p, "Storage error in DRAM memory ");
break;
case 5:
p += sprintf(p, "Storage error in TLB ");
break;
case 6:
p += sprintf(p, "Storage error in cache ");
break;
case 7:
p += sprintf(p, "Error in one or more functional units ");
break;
case 8:
p += sprintf(p, "component failed self test ");
break;
case 9:
p += sprintf(p, "Overflow or undervalue of internal queue ");
break;
case 17:
p += sprintf(p, "Virtual address not found on IO-TLB or IO-PDIR ");
break;
case 18:
p += sprintf(p, "Improper access error ");
break;
case 19:
p += sprintf(p, "Access to a memory address which is not mapped to any component ");
break;
case 20:
p += sprintf(p, "Loss of Lockstep ");
break;
case 21:
p += sprintf(p, "Response not associated with a request ");
break;
case 22:
p += sprintf(p, "Bus parity error - must also set the A, C, or D Bits ");
break;
case 23:
p += sprintf(p, "Detection of a PATH_ERROR ");
break;
case 25:
p += sprintf(p, "Bus operation timeout ");
break;
case 26:
p += sprintf(p, "A read was issued to data that has been poisoned ");
break;
default:
p += sprintf(p, "reserved ");
break;
}
}
if (mem_err->validation_bits & CPER_MEM_VALID_REQUESTOR_ID)
p += sprintf(p, "requestorID: 0x%016llx ",
(long long)mem_err->requestor_id);
if (mem_err->validation_bits & CPER_MEM_VALID_RESPONDER_ID)
p += sprintf(p, "responderID: 0x%016llx ",
(long long)mem_err->responder_id);
if (mem_err->validation_bits & CPER_MEM_VALID_TARGET_ID)
p += sprintf(p, "targetID: 0x%016llx ",
(long long)mem_err->responder_id);
if (p > pvt->other_detail)
*(p - 1) = '\0';
/* Generate the trace event */
grain_bits = fls_long(e->grain);
sprintf(pvt->detail_location, "APEI location: %s %s",
e->location, e->other_detail);
trace_mc_event(type, e->msg, e->label, e->error_count,
mci->mc_idx, e->top_layer, e->mid_layer, e->low_layer,
PAGES_TO_MiB(e->page_frame_number) | e->offset_in_page,
grain_bits, e->syndrome, pvt->detail_location);
/* Report the error via EDAC API */
edac_raw_mc_handle_error(type, mci, e);
}
EXPORT_SYMBOL_GPL(ghes_edac_report_mem_error);
int ghes_edac_register(struct ghes *ghes, struct device *dev)
{
bool fake = false;
int rc, num_dimm = 0;
struct mem_ctl_info *mci;
struct edac_mc_layer layers[1];
struct ghes_edac_pvt *pvt;
struct ghes_edac_dimm_fill dimm_fill;
/* Get the number of DIMMs */
dmi_walk(ghes_edac_count_dimms, &num_dimm);
/* Check if we've got a bogus BIOS */
if (num_dimm == 0) {
fake = true;
num_dimm = 1;
}
layers[0].type = EDAC_MC_LAYER_ALL_MEM;
layers[0].size = num_dimm;
layers[0].is_virt_csrow = true;
/*
* We need to serialize edac_mc_alloc() and edac_mc_add_mc(),
* to avoid duplicated memory controller numbers
*/
mutex_lock(&ghes_edac_lock);
mci = edac_mc_alloc(ghes_edac_mc_num, ARRAY_SIZE(layers), layers,
sizeof(*pvt));
if (!mci) {
pr_info("Can't allocate memory for EDAC data\n");
mutex_unlock(&ghes_edac_lock);
return -ENOMEM;
}
pvt = mci->pvt_info;
memset(pvt, 0, sizeof(*pvt));
list_add_tail(&pvt->list, &ghes_reglist);
pvt->ghes = ghes;
pvt->mci = mci;
mci->pdev = dev;
mci->mtype_cap = MEM_FLAG_EMPTY;
mci->edac_ctl_cap = EDAC_FLAG_NONE;
mci->edac_cap = EDAC_FLAG_NONE;
mci->mod_name = "ghes_edac.c";
mci->mod_ver = GHES_EDAC_REVISION;
mci->ctl_name = "ghes_edac";
mci->dev_name = "ghes";
if (!ghes_edac_mc_num) {
if (!fake) {
pr_info("This EDAC driver relies on BIOS to enumerate memory and get error reports.\n");
pr_info("Unfortunately, not all BIOSes reflect the memory layout correctly.\n");
pr_info("So, the end result of using this driver varies from vendor to vendor.\n");
pr_info("If you find incorrect reports, please contact your hardware vendor\n");
pr_info("to correct its BIOS.\n");
pr_info("This system has %d DIMM sockets.\n",
num_dimm);
} else {
pr_info("This system has a very crappy BIOS: It doesn't even list the DIMMS.\n");
pr_info("Its SMBIOS info is wrong. It is doubtful that the error report would\n");
pr_info("work on such system. Use this driver with caution\n");
}
}
if (!fake) {
/*
* Fill DIMM info from DMI for the memory controller #0
*
* Keep it in blank for the other memory controllers, as
* there's no reliable way to properly credit each DIMM to
* the memory controller, as different BIOSes fill the
* DMI bank location fields on different ways
*/
if (!ghes_edac_mc_num) {
dimm_fill.count = 0;
dimm_fill.mci = mci;
dmi_walk(ghes_edac_dmidecode, &dimm_fill);
}
} else {
struct dimm_info *dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
mci->n_layers, 0, 0, 0);
dimm->nr_pages = 1;
dimm->grain = 128;
dimm->mtype = MEM_UNKNOWN;
dimm->dtype = DEV_UNKNOWN;
dimm->edac_mode = EDAC_SECDED;
}
rc = edac_mc_add_mc(mci);
if (rc < 0) {
pr_info("Can't register at EDAC core\n");
edac_mc_free(mci);
mutex_unlock(&ghes_edac_lock);
return -ENODEV;
}
ghes_edac_mc_num++;
mutex_unlock(&ghes_edac_lock);
return 0;
}
EXPORT_SYMBOL_GPL(ghes_edac_register);
void ghes_edac_unregister(struct ghes *ghes)
{
struct mem_ctl_info *mci;
struct ghes_edac_pvt *pvt, *tmp;
list_for_each_entry_safe(pvt, tmp, &ghes_reglist, list) {
if (ghes == pvt->ghes) {
mci = pvt->mci;
edac_mc_del_mc(mci->pdev);
edac_mc_free(mci);
list_del(&pvt->list);
}
}
}
EXPORT_SYMBOL_GPL(ghes_edac_unregister);

39
drivers/edac/i3200_edac.c
View file

@ -106,16 +106,26 @@ static int nr_channels;
static int how_many_channels(struct pci_dev *pdev)
{
int n_channels;
unsigned char capid0_8b; /* 8th byte of CAPID0 */
pci_read_config_byte(pdev, I3200_CAPID0 + 8, &capid0_8b);
if (capid0_8b & 0x20) { /* check DCD: Dual Channel Disable */
edac_dbg(0, "In single channel mode\n");
return 1;
n_channels = 1;
} else {
edac_dbg(0, "In dual channel mode\n");
return 2;
n_channels = 2;
}
if (capid0_8b & 0x10) /* check if both channels are filled */
edac_dbg(0, "2 DIMMS per channel disabled\n");
else
edac_dbg(0, "2 DIMMS per channel enabled\n");
return n_channels;
}
static unsigned long eccerrlog_syndrome(u64 log)
@ -290,6 +300,8 @@ static void i3200_get_drbs(void __iomem *window,
for (i = 0; i < I3200_RANKS_PER_CHANNEL; i++) {
drbs[0][i] = readw(window + I3200_C0DRB + 2*i) & I3200_DRB_MASK;
drbs[1][i] = readw(window + I3200_C1DRB + 2*i) & I3200_DRB_MASK;
edac_dbg(0, "drb[0][%d] = %d, drb[1][%d] = %d\n", i, drbs[0][i], i, drbs[1][i]);
}
}
@ -311,6 +323,9 @@ static unsigned long drb_to_nr_pages(
int n;
n = drbs[channel][rank];
if (!n)
return 0;
if (rank > 0)
n -= drbs[channel][rank - 1];
if (stacked && (channel == 1) &&
@ -377,19 +392,19 @@ static int i3200_probe1(struct pci_dev *pdev, int dev_idx)
* cumulative; the last one will contain the total memory
* contained in all ranks.
*/
for (i = 0; i < mci->nr_csrows; i++) {
for (i = 0; i < I3200_DIMMS; i++) {
unsigned long nr_pages;
struct csrow_info *csrow = mci->csrows[i];
nr_pages = drb_to_nr_pages(drbs, stacked,
i / I3200_RANKS_PER_CHANNEL,
i % I3200_RANKS_PER_CHANNEL);
if (nr_pages == 0)
continue;
for (j = 0; j < nr_channels; j++) {
struct dimm_info *dimm = csrow->channels[j]->dimm;
struct dimm_info *dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms,
mci->n_layers, i, j, 0);
nr_pages = drb_to_nr_pages(drbs, stacked, j, i);
if (nr_pages == 0)
continue;
edac_dbg(0, "csrow %d, channel %d%s, size = %ld Mb\n", i, j,
stacked ? " (stacked)" : "", PAGES_TO_MiB(nr_pages));
dimm->nr_pages = nr_pages;
dimm->grain = nr_pages << PAGE_SHIFT;

178
drivers/edac/i5100_edac.c
View file

@ -27,6 +27,7 @@
#include <linux/edac.h>
#include <linux/delay.h>
#include <linux/mmzone.h>
#include <linux/debugfs.h>
#include "edac_core.h"
@ -68,6 +69,14 @@
I5100_FERR_NF_MEM_M1ERR_MASK)
#define I5100_NERR_NF_MEM 0xa4 /* MC Next Non-Fatal Errors */
#define I5100_EMASK_MEM 0xa8 /* MC Error Mask Register */
#define I5100_MEM0EINJMSK0 0x200 /* Injection Mask0 Register Channel 0 */
#define I5100_MEM1EINJMSK0 0x208 /* Injection Mask0 Register Channel 1 */
#define I5100_MEMXEINJMSK0_EINJEN (1 << 27)
#define I5100_MEM0EINJMSK1 0x204 /* Injection Mask1 Register Channel 0 */
#define I5100_MEM1EINJMSK1 0x206 /* Injection Mask1 Register Channel 1 */
/* Device 19, Function 0 */
#define I5100_DINJ0 0x9a
/* device 21 and 22, func 0 */
#define I5100_MTR_0 0x154 /* Memory Technology Registers 0-3 */
@ -338,13 +347,26 @@ struct i5100_priv {
unsigned ranksperchan; /* number of ranks per channel */
struct pci_dev *mc; /* device 16 func 1 */
struct pci_dev *einj; /* device 19 func 0 */
struct pci_dev *ch0mm; /* device 21 func 0 */
struct pci_dev *ch1mm; /* device 22 func 0 */
struct delayed_work i5100_scrubbing;
int scrub_enable;
/* Error injection */
u8 inject_channel;
u8 inject_hlinesel;
u8 inject_deviceptr1;
u8 inject_deviceptr2;
u16 inject_eccmask1;
u16 inject_eccmask2;
struct dentry *debugfs;
};
static struct dentry *i5100_debugfs;
/* map a rank/chan to a slot number on the mainboard */
static int i5100_rank_to_slot(const struct mem_ctl_info *mci,
int chan, int rank)
@ -863,13 +885,126 @@ static void i5100_init_csrows(struct mem_ctl_info *mci)
}
}
/****************************************************************************
* Error injection routines
****************************************************************************/
static void i5100_do_inject(struct mem_ctl_info *mci)
{
struct i5100_priv *priv = mci->pvt_info;
u32 mask0;
u16 mask1;
/* MEM[1:0]EINJMSK0
* 31 - ADDRMATCHEN
* 29:28 - HLINESEL
* 00 Reserved
* 01 Lower half of cache line
* 10 Upper half of cache line
* 11 Both upper and lower parts of cache line
* 27 - EINJEN
* 25:19 - XORMASK1 for deviceptr1
* 9:5 - SEC2RAM for deviceptr2
* 4:0 - FIR2RAM for deviceptr1
*/
mask0 = ((priv->inject_hlinesel & 0x3) << 28) |
I5100_MEMXEINJMSK0_EINJEN |
((priv->inject_eccmask1 & 0xffff) << 10) |
((priv->inject_deviceptr2 & 0x1f) << 5) |
(priv->inject_deviceptr1 & 0x1f);
/* MEM[1:0]EINJMSK1
* 15:0 - XORMASK2 for deviceptr2
*/
mask1 = priv->inject_eccmask2;
if (priv->inject_channel == 0) {
pci_write_config_dword(priv->mc, I5100_MEM0EINJMSK0, mask0);
pci_write_config_word(priv->mc, I5100_MEM0EINJMSK1, mask1);
} else {
pci_write_config_dword(priv->mc, I5100_MEM1EINJMSK0, mask0);
pci_write_config_word(priv->mc, I5100_MEM1EINJMSK1, mask1);
}
/* Error Injection Response Function
* Intel 5100 Memory Controller Hub Chipset (318378) datasheet
* hints about this register but carry no data about them. All
* data regarding device 19 is based on experimentation and the
* Intel 7300 Chipset Memory Controller Hub (318082) datasheet
* which appears to be accurate for the i5100 in this area.
*
* The injection code don't work without setting this register.
* The register needs to be flipped off then on else the hardware
* will only preform the first injection.
*
* Stop condition bits 7:4
* 1010 - Stop after one injection
* 1011 - Never stop injecting faults
*
* Start condition bits 3:0
* 1010 - Never start
* 1011 - Start immediately
*/
pci_write_config_byte(priv->einj, I5100_DINJ0, 0xaa);
pci_write_config_byte(priv->einj, I5100_DINJ0, 0xab);
}
#define to_mci(k) container_of(k, struct mem_ctl_info, dev)
static ssize_t inject_enable_write(struct file *file, const char __user *data,
size_t count, loff_t *ppos)
{
struct device *dev = file->private_data;
struct mem_ctl_info *mci = to_mci(dev);
i5100_do_inject(mci);
return count;
}
static const struct file_operations i5100_inject_enable_fops = {
.open = simple_open,
.write = inject_enable_write,
.llseek = generic_file_llseek,
};
static int i5100_setup_debugfs(struct mem_ctl_info *mci)
{
struct i5100_priv *priv = mci->pvt_info;
if (!i5100_debugfs)
return -ENODEV;
priv->debugfs = debugfs_create_dir(mci->bus.name, i5100_debugfs);
if (!priv->debugfs)
return -ENOMEM;
debugfs_create_x8("inject_channel", S_IRUGO | S_IWUSR, priv->debugfs,
&priv->inject_channel);
debugfs_create_x8("inject_hlinesel", S_IRUGO | S_IWUSR, priv->debugfs,
&priv->inject_hlinesel);
debugfs_create_x8("inject_deviceptr1", S_IRUGO | S_IWUSR, priv->debugfs,
&priv->inject_deviceptr1);
debugfs_create_x8("inject_deviceptr2", S_IRUGO | S_IWUSR, priv->debugfs,
&priv->inject_deviceptr2);
debugfs_create_x16("inject_eccmask1", S_IRUGO | S_IWUSR, priv->debugfs,
&priv->inject_eccmask1);
debugfs_create_x16("inject_eccmask2", S_IRUGO | S_IWUSR, priv->debugfs,
&priv->inject_eccmask2);
debugfs_create_file("inject_enable", S_IWUSR, priv->debugfs,
&mci->dev, &i5100_inject_enable_fops);
return 0;
}
static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
int rc;
struct mem_ctl_info *mci;
struct edac_mc_layer layers[2];
struct i5100_priv *priv;
struct pci_dev *ch0mm, *ch1mm;
struct pci_dev *ch0mm, *ch1mm, *einj;
int ret = 0;
u32 dw;
int ranksperch;
@ -941,6 +1076,22 @@ static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
goto bail_disable_ch1;
}
/* device 19, func 0, Error injection */
einj = pci_get_device_func(PCI_VENDOR_ID_INTEL,
PCI_DEVICE_ID_INTEL_5100_19, 0);
if (!einj) {
ret = -ENODEV;
goto bail_einj;
}
rc = pci_enable_device(einj);
if (rc < 0) {
ret = rc;
goto bail_disable_einj;
}
mci->pdev = &pdev->dev;
priv = mci->pvt_info;
@ -948,6 +1099,7 @@ static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
priv->mc = pdev;
priv->ch0mm = ch0mm;
priv->ch1mm = ch1mm;
priv->einj = einj;
INIT_DELAYED_WORK(&(priv->i5100_scrubbing), i5100_refresh_scrubbing);
@ -975,6 +1127,13 @@ static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
mci->set_sdram_scrub_rate = i5100_set_scrub_rate;
mci->get_sdram_scrub_rate = i5100_get_scrub_rate;
priv->inject_channel = 0;
priv->inject_hlinesel = 0;
priv->inject_deviceptr1 = 0;
priv->inject_deviceptr2 = 0;
priv->inject_eccmask1 = 0;
priv->inject_eccmask2 = 0;
i5100_init_csrows(mci);
/* this strange construction seems to be in every driver, dunno why */
@ -992,6 +1151,8 @@ static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
goto bail_scrub;
}
i5100_setup_debugfs(mci);
return ret;
bail_scrub:
@ -999,6 +1160,12 @@ bail_scrub:
cancel_delayed_work_sync(&(priv->i5100_scrubbing));
edac_mc_free(mci);
bail_disable_einj:
pci_disable_device(einj);
bail_einj:
pci_dev_put(einj);
bail_disable_ch1:
pci_disable_device(ch1mm);
@ -1030,14 +1197,18 @@ static void i5100_remove_one(struct pci_dev *pdev)
priv = mci->pvt_info;
debugfs_remove_recursive(priv->debugfs);
priv->scrub_enable = 0;
cancel_delayed_work_sync(&(priv->i5100_scrubbing));
pci_disable_device(pdev);
pci_disable_device(priv->ch0mm);
pci_disable_device(priv->ch1mm);
pci_disable_device(priv->einj);
pci_dev_put(priv->ch0mm);
pci_dev_put(priv->ch1mm);
pci_dev_put(priv->einj);
edac_mc_free(mci);
}
@ -1060,13 +1231,16 @@ static int __init i5100_init(void)
{
int pci_rc;
pci_rc = pci_register_driver(&i5100_driver);
i5100_debugfs = debugfs_create_dir("i5100_edac", NULL);
pci_rc = pci_register_driver(&i5100_driver);
return (pci_rc < 0) ? pci_rc : 0;
}
static void __exit i5100_exit(void)
{
debugfs_remove(i5100_debugfs);
pci_unregister_driver(&i5100_driver);
}

8
drivers/edac/i7core_edac.c
View file

@ -420,21 +420,21 @@ static inline int numdimms(u32 dimms)
static inline int numrank(u32 rank)
{
static int ranks[4] = { 1, 2, 4, -EINVAL };
static const int ranks[] = { 1, 2, 4, -EINVAL };
return ranks[rank & 0x3];
}
static inline int numbank(u32 bank)
{
static int banks[4] = { 4, 8, 16, -EINVAL };
static const int banks[] = { 4, 8, 16, -EINVAL };
return banks[bank & 0x3];
}
static inline int numrow(u32 row)
{
static int rows[8] = {
static const int rows[] = {
1 << 12, 1 << 13, 1 << 14, 1 << 15,
1 << 16, -EINVAL, -EINVAL, -EINVAL,
};
@ -444,7 +444,7 @@ static inline int numrow(u32 row)
static inline int numcol(u32 col)
{
static int cols[8] = {
static const int cols[] = {
1 << 10, 1 << 11, 1 << 12, -EINVAL,
};
return cols[col & 0x3];

2
drivers/edac/sb_edac.c
View file

@ -639,7 +639,7 @@ static void get_memory_layout(const struct mem_ctl_info *mci)
tmp_mb = (1 + pvt->tohm) >> 20;
mb = div_u64_rem(tmp_mb, 1000, &kb);
edac_dbg(0, "TOHM: %u.%03u GB (0x%016Lx)", mb, kb, (u64)pvt->tohm);
edac_dbg(0, "TOHM: %u.%03u GB (0x%016Lx)\n", mb, kb, (u64)pvt->tohm);
/*
* Step 2) Get SAD range and SAD Interleave list