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path: root/drivers/edac/edac_mc.c
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Diffstat (limited to 'drivers/edac/edac_mc.c')
-rw-r--r--drivers/edac/edac_mc.c202
1 files changed, 103 insertions, 99 deletions
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 2e8c198749a1..835319126bb6 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -34,7 +34,6 @@
#include "edac_core.h"
#include "edac_module.h"
-
/* lock to memory controller's control array */
static DEFINE_MUTEX(mem_ctls_mutex);
static struct list_head mc_devices = LIST_HEAD_INIT(mc_devices);
@@ -54,13 +53,11 @@ static void edac_mc_dump_csrow(struct csrow_info *csrow)
{
debugf4("\tcsrow = %p\n", csrow);
debugf4("\tcsrow->csrow_idx = %d\n", csrow->csrow_idx);
- debugf4("\tcsrow->first_page = 0x%lx\n",
- csrow->first_page);
+ debugf4("\tcsrow->first_page = 0x%lx\n", csrow->first_page);
debugf4("\tcsrow->last_page = 0x%lx\n", csrow->last_page);
debugf4("\tcsrow->page_mask = 0x%lx\n", csrow->page_mask);
debugf4("\tcsrow->nr_pages = 0x%x\n", csrow->nr_pages);
- debugf4("\tcsrow->nr_channels = %d\n",
- csrow->nr_channels);
+ debugf4("\tcsrow->nr_channels = %d\n", csrow->nr_channels);
debugf4("\tcsrow->channels = %p\n", csrow->channels);
debugf4("\tcsrow->mci = %p\n\n", csrow->mci);
}
@@ -75,12 +72,11 @@ static void edac_mc_dump_mci(struct mem_ctl_info *mci)
debugf3("\tmci->nr_csrows = %d, csrows = %p\n",
mci->nr_csrows, mci->csrows);
debugf3("\tdev = %p\n", mci->dev);
- debugf3("\tmod_name:ctl_name = %s:%s\n",
- mci->mod_name, mci->ctl_name);
+ debugf3("\tmod_name:ctl_name = %s:%s\n", mci->mod_name, mci->ctl_name);
debugf3("\tpvt_info = %p\n\n", mci->pvt_info);
}
-#endif /* CONFIG_EDAC_DEBUG */
+#endif /* CONFIG_EDAC_DEBUG */
/* 'ptr' points to a possibly unaligned item X such that sizeof(X) is 'size'.
* Adjust 'ptr' so that its alignment is at least as stringent as what the
@@ -89,7 +85,7 @@ static void edac_mc_dump_mci(struct mem_ctl_info *mci)
* If 'size' is a constant, the compiler will optimize this whole function
* down to either a no-op or the addition of a constant to the value of 'ptr'.
*/
-char * edac_align_ptr(void *ptr, unsigned size)
+char *edac_align_ptr(void *ptr, unsigned size)
{
unsigned align, r;
@@ -106,14 +102,14 @@ char * edac_align_ptr(void *ptr, unsigned size)
else if (size > sizeof(char))
align = sizeof(short);
else
- return (char *) ptr;
+ return (char *)ptr;
r = size % align;
if (r == 0)
- return (char *) ptr;
+ return (char *)ptr;
- return (char *) (((unsigned long) ptr) + align - r);
+ return (char *)(((unsigned long)ptr) + align - r);
}
/**
@@ -133,7 +129,7 @@ char * edac_align_ptr(void *ptr, unsigned size)
* struct mem_ctl_info pointer
*/
struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
- unsigned nr_chans)
+ unsigned nr_chans)
{
struct mem_ctl_info *mci;
struct csrow_info *csi, *csrow;
@@ -147,12 +143,12 @@ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
* stringent as what the compiler would provide if we could simply
* hardcode everything into a single struct.
*/
- mci = (struct mem_ctl_info *) 0;
+ mci = (struct mem_ctl_info *)0;
csi = (struct csrow_info *)edac_align_ptr(&mci[1], sizeof(*csi));
chi = (struct channel_info *)
- edac_align_ptr(&csi[nr_csrows], sizeof(*chi));
+ edac_align_ptr(&csi[nr_csrows], sizeof(*chi));
pvt = edac_align_ptr(&chi[nr_chans * nr_csrows], sz_pvt);
- size = ((unsigned long) pvt) + sz_pvt;
+ size = ((unsigned long)pvt) + sz_pvt;
if ((mci = kmalloc(size, GFP_KERNEL)) == NULL)
return NULL;
@@ -160,11 +156,11 @@ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
/* Adjust pointers so they point within the memory we just allocated
* rather than an imaginary chunk of memory located at address 0.
*/
- csi = (struct csrow_info *) (((char *) mci) + ((unsigned long) csi));
- chi = (struct channel_info *) (((char *) mci) + ((unsigned long) chi));
- pvt = sz_pvt ? (((char *) mci) + ((unsigned long) pvt)) : NULL;
+ csi = (struct csrow_info *)(((char *)mci) + ((unsigned long)csi));
+ chi = (struct channel_info *)(((char *)mci) + ((unsigned long)chi));
+ pvt = sz_pvt ? (((char *)mci) + ((unsigned long)pvt)) : NULL;
- memset(mci, 0, size); /* clear all fields */
+ memset(mci, 0, size); /* clear all fields */
mci->csrows = csi;
mci->pvt_info = pvt;
mci->nr_csrows = nr_csrows;
@@ -188,6 +184,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
return mci;
}
+
EXPORT_SYMBOL_GPL(edac_mc_alloc);
/**
@@ -198,6 +195,7 @@ void edac_mc_free(struct mem_ctl_info *mci)
{
kfree(mci);
}
+
EXPORT_SYMBOL_GPL(edac_mc_free);
static struct mem_ctl_info *find_mci_by_dev(struct device *dev)
@@ -224,7 +222,7 @@ static int edac_mc_assert_error_check_and_clear(void)
{
int old_state;
- if(edac_op_state == EDAC_OPSTATE_POLL)
+ if (edac_op_state == EDAC_OPSTATE_POLL)
return 1;
old_state = edac_err_assert;
@@ -240,12 +238,12 @@ static int edac_mc_assert_error_check_and_clear(void)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20))
static void edac_mc_workq_function(struct work_struct *work_req)
{
- struct delayed_work *d_work = (struct delayed_work*) work_req;
+ struct delayed_work *d_work = (struct delayed_work *)work_req;
struct mem_ctl_info *mci = to_edac_mem_ctl_work(d_work);
#else
static void edac_mc_workq_function(void *ptr)
{
- struct mem_ctl_info *mci = (struct mem_ctl_info *) ptr;
+ struct mem_ctl_info *mci = (struct mem_ctl_info *)ptr;
#endif
mutex_lock(&mem_ctls_mutex);
@@ -264,7 +262,7 @@ static void edac_mc_workq_function(void *ptr)
/* Reschedule */
queue_delayed_work(edac_workqueue, &mci->work,
- msecs_to_jiffies(edac_mc_get_poll_msec()));
+ msecs_to_jiffies(edac_mc_get_poll_msec()));
}
/*
@@ -320,7 +318,7 @@ void edac_reset_delay_period(struct mem_ctl_info *mci, unsigned long value)
* Before calling this function, caller must
* assign a unique value to mci->mc_idx.
*/
-static int add_mc_to_global_list (struct mem_ctl_info *mci)
+static int add_mc_to_global_list(struct mem_ctl_info *mci)
{
struct list_head *item, *insert_before;
struct mem_ctl_info *p;
@@ -346,13 +344,13 @@ static int add_mc_to_global_list (struct mem_ctl_info *mci)
atomic_inc(&edac_handlers);
return 0;
-fail0:
+ fail0:
edac_printk(KERN_WARNING, EDAC_MC,
"%s (%s) %s %s already assigned %d\n", p->dev->bus_id,
dev_name(mci), p->mod_name, p->ctl_name, p->mc_idx);
return 1;
-fail1:
+ fail1:
edac_printk(KERN_WARNING, EDAC_MC,
"bug in low-level driver: attempt to assign\n"
" duplicate mc_idx %d in %s()\n", p->mc_idx, __func__);
@@ -385,7 +383,7 @@ static void del_mc_from_global_list(struct mem_ctl_info *mci)
*
* Caller must hold mem_ctls_mutex.
*/
-struct mem_ctl_info * edac_mc_find(int idx)
+struct mem_ctl_info *edac_mc_find(int idx)
{
struct list_head *item;
struct mem_ctl_info *mci;
@@ -403,6 +401,7 @@ struct mem_ctl_info * edac_mc_find(int idx)
return NULL;
}
+
EXPORT_SYMBOL(edac_mc_find);
/**
@@ -433,8 +432,8 @@ int edac_mc_add_mc(struct mem_ctl_info *mci, int mc_idx)
edac_mc_dump_csrow(&mci->csrows[i]);
for (j = 0; j < mci->csrows[i].nr_channels; j++)
- edac_mc_dump_channel(
- &mci->csrows[i].channels[j]);
+ edac_mc_dump_channel(&mci->csrows[i].
+ channels[j]);
}
}
#endif
@@ -448,7 +447,7 @@ int edac_mc_add_mc(struct mem_ctl_info *mci, int mc_idx)
if (edac_create_sysfs_mci_device(mci)) {
edac_mc_printk(mci, KERN_WARNING,
- "failed to create sysfs device\n");
+ "failed to create sysfs device\n");
goto fail1;
}
@@ -464,18 +463,19 @@ int edac_mc_add_mc(struct mem_ctl_info *mci, int mc_idx)
/* Report action taken */
edac_mc_printk(mci, KERN_INFO, "Giving out device to %s %s: DEV %s\n",
- mci->mod_name, mci->ctl_name, dev_name(mci));
+ mci->mod_name, mci->ctl_name, dev_name(mci));
mutex_unlock(&mem_ctls_mutex);
return 0;
-fail1:
+ fail1:
del_mc_from_global_list(mci);
-fail0:
+ fail0:
mutex_unlock(&mem_ctls_mutex);
return 1;
}
+
EXPORT_SYMBOL_GPL(edac_mc_add_mc);
/**
@@ -485,7 +485,7 @@ EXPORT_SYMBOL_GPL(edac_mc_add_mc);
*
* Return pointer to removed mci structure, or NULL if device not found.
*/
-struct mem_ctl_info * edac_mc_del_mc(struct device *dev)
+struct mem_ctl_info *edac_mc_del_mc(struct device *dev)
{
struct mem_ctl_info *mci;
@@ -507,10 +507,11 @@ struct mem_ctl_info * edac_mc_del_mc(struct device *dev)
del_mc_from_global_list(mci);
mutex_unlock(&mem_ctls_mutex);
edac_printk(KERN_INFO, EDAC_MC,
- "Removed device %d for %s %s: DEV %s\n", mci->mc_idx,
- mci->mod_name, mci->ctl_name, dev_name(mci));
+ "Removed device %d for %s %s: DEV %s\n", mci->mc_idx,
+ mci->mod_name, mci->ctl_name, dev_name(mci));
return mci;
}
+
EXPORT_SYMBOL_GPL(edac_mc_del_mc);
static void edac_mc_scrub_block(unsigned long page, unsigned long offset,
@@ -523,7 +524,7 @@ static void edac_mc_scrub_block(unsigned long page, unsigned long offset,
debugf3("%s()\n", __func__);
/* ECC error page was not in our memory. Ignore it. */
- if(!pfn_valid(page))
+ if (!pfn_valid(page))
return;
/* Find the actual page structure then map it and fix */
@@ -575,18 +576,20 @@ int edac_mc_find_csrow_by_page(struct mem_ctl_info *mci, unsigned long page)
if (row == -1)
edac_mc_printk(mci, KERN_ERR,
- "could not look up page error address %lx\n",
- (unsigned long) page);
+ "could not look up page error address %lx\n",
+ (unsigned long)page);
return row;
}
+
EXPORT_SYMBOL_GPL(edac_mc_find_csrow_by_page);
/* FIXME - setable log (warning/emerg) levels */
/* FIXME - integrate with evlog: http://evlog.sourceforge.net/ */
void edac_mc_handle_ce(struct mem_ctl_info *mci,
- unsigned long page_frame_number, unsigned long offset_in_page,
- unsigned long syndrome, int row, int channel, const char *msg)
+ unsigned long page_frame_number,
+ unsigned long offset_in_page, unsigned long syndrome,
+ int row, int channel, const char *msg)
{
unsigned long remapped_page;
@@ -596,8 +599,8 @@ void edac_mc_handle_ce(struct mem_ctl_info *mci,
if (row >= mci->nr_csrows || row < 0) {
/* something is wrong */
edac_mc_printk(mci, KERN_ERR,
- "INTERNAL ERROR: row out of range "
- "(%d >= %d)\n", row, mci->nr_csrows);
+ "INTERNAL ERROR: row out of range "
+ "(%d >= %d)\n", row, mci->nr_csrows);
edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR");
return;
}
@@ -605,9 +608,9 @@ void edac_mc_handle_ce(struct mem_ctl_info *mci,
if (channel >= mci->csrows[row].nr_channels || channel < 0) {
/* something is wrong */
edac_mc_printk(mci, KERN_ERR,
- "INTERNAL ERROR: channel out of range "
- "(%d >= %d)\n", channel,
- mci->csrows[row].nr_channels);
+ "INTERNAL ERROR: channel out of range "
+ "(%d >= %d)\n", channel,
+ mci->csrows[row].nr_channels);
edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR");
return;
}
@@ -615,11 +618,11 @@ void edac_mc_handle_ce(struct mem_ctl_info *mci,
if (edac_mc_get_log_ce())
/* FIXME - put in DIMM location */
edac_mc_printk(mci, KERN_WARNING,
- "CE page 0x%lx, offset 0x%lx, grain %d, syndrome "
- "0x%lx, row %d, channel %d, label \"%s\": %s\n",
- page_frame_number, offset_in_page,
- mci->csrows[row].grain, syndrome, row, channel,
- mci->csrows[row].channels[channel].label, msg);
+ "CE page 0x%lx, offset 0x%lx, grain %d, syndrome "
+ "0x%lx, row %d, channel %d, label \"%s\": %s\n",
+ page_frame_number, offset_in_page,
+ mci->csrows[row].grain, syndrome, row, channel,
+ mci->csrows[row].channels[channel].label, msg);
mci->ce_count++;
mci->csrows[row].ce_count++;
@@ -640,25 +643,27 @@ void edac_mc_handle_ce(struct mem_ctl_info *mci,
page_frame_number;
edac_mc_scrub_block(remapped_page, offset_in_page,
- mci->csrows[row].grain);
+ mci->csrows[row].grain);
}
}
+
EXPORT_SYMBOL_GPL(edac_mc_handle_ce);
void edac_mc_handle_ce_no_info(struct mem_ctl_info *mci, const char *msg)
{
if (edac_mc_get_log_ce())
edac_mc_printk(mci, KERN_WARNING,
- "CE - no information available: %s\n", msg);
+ "CE - no information available: %s\n", msg);
mci->ce_noinfo_count++;
mci->ce_count++;
}
+
EXPORT_SYMBOL_GPL(edac_mc_handle_ce_no_info);
void edac_mc_handle_ue(struct mem_ctl_info *mci,
- unsigned long page_frame_number, unsigned long offset_in_page,
- int row, const char *msg)
+ unsigned long page_frame_number,
+ unsigned long offset_in_page, int row, const char *msg)
{
int len = EDAC_MC_LABEL_LEN * 4;
char labels[len + 1];
@@ -672,41 +677,42 @@ void edac_mc_handle_ue(struct mem_ctl_info *mci,
if (row >= mci->nr_csrows || row < 0) {
/* something is wrong */
edac_mc_printk(mci, KERN_ERR,
- "INTERNAL ERROR: row out of range "
- "(%d >= %d)\n", row, mci->nr_csrows);
+ "INTERNAL ERROR: row out of range "
+ "(%d >= %d)\n", row, mci->nr_csrows);
edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR");
return;
}
chars = snprintf(pos, len + 1, "%s",
- mci->csrows[row].channels[0].label);
+ mci->csrows[row].channels[0].label);
len -= chars;
pos += chars;
for (chan = 1; (chan < mci->csrows[row].nr_channels) && (len > 0);
chan++) {
chars = snprintf(pos, len + 1, ":%s",
- mci->csrows[row].channels[chan].label);
+ mci->csrows[row].channels[chan].label);
len -= chars;
pos += chars;
}
if (edac_mc_get_log_ue())
edac_mc_printk(mci, KERN_EMERG,
- "UE page 0x%lx, offset 0x%lx, grain %d, row %d, "
- "labels \"%s\": %s\n", page_frame_number,
- offset_in_page, mci->csrows[row].grain, row, labels,
- msg);
+ "UE page 0x%lx, offset 0x%lx, grain %d, row %d, "
+ "labels \"%s\": %s\n", page_frame_number,
+ offset_in_page, mci->csrows[row].grain, row,
+ labels, msg);
if (edac_mc_get_panic_on_ue())
panic("EDAC MC%d: UE page 0x%lx, offset 0x%lx, grain %d, "
- "row %d, labels \"%s\": %s\n", mci->mc_idx,
- page_frame_number, offset_in_page,
- mci->csrows[row].grain, row, labels, msg);
+ "row %d, labels \"%s\": %s\n", mci->mc_idx,
+ page_frame_number, offset_in_page,
+ mci->csrows[row].grain, row, labels, msg);
mci->ue_count++;
mci->csrows[row].ue_count++;
}
+
EXPORT_SYMBOL_GPL(edac_mc_handle_ue);
void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, const char *msg)
@@ -716,22 +722,21 @@ void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, const char *msg)
if (edac_mc_get_log_ue())
edac_mc_printk(mci, KERN_WARNING,
- "UE - no information available: %s\n", msg);
+ "UE - no information available: %s\n", msg);
mci->ue_noinfo_count++;
mci->ue_count++;
}
-EXPORT_SYMBOL_GPL(edac_mc_handle_ue_no_info);
+EXPORT_SYMBOL_GPL(edac_mc_handle_ue_no_info);
/*************************************************************
* On Fully Buffered DIMM modules, this help function is
* called to process UE events
*/
void edac_mc_handle_fbd_ue(struct mem_ctl_info *mci,
- unsigned int csrow,
- unsigned int channela,
- unsigned int channelb,
- char *msg)
+ unsigned int csrow,
+ unsigned int channela,
+ unsigned int channelb, char *msg)
{
int len = EDAC_MC_LABEL_LEN * 4;
char labels[len + 1];
@@ -741,8 +746,8 @@ void edac_mc_handle_fbd_ue(struct mem_ctl_info *mci,
if (csrow >= mci->nr_csrows) {
/* something is wrong */
edac_mc_printk(mci, KERN_ERR,
- "INTERNAL ERROR: row out of range (%d >= %d)\n",
- csrow, mci->nr_csrows);
+ "INTERNAL ERROR: row out of range (%d >= %d)\n",
+ csrow, mci->nr_csrows);
edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR");
return;
}
@@ -750,9 +755,9 @@ void edac_mc_handle_fbd_ue(struct mem_ctl_info *mci,
if (channela >= mci->csrows[csrow].nr_channels) {
/* something is wrong */
edac_mc_printk(mci, KERN_ERR,
- "INTERNAL ERROR: channel-a out of range "
- "(%d >= %d)\n",
- channela, mci->csrows[csrow].nr_channels);
+ "INTERNAL ERROR: channel-a out of range "
+ "(%d >= %d)\n",
+ channela, mci->csrows[csrow].nr_channels);
edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR");
return;
}
@@ -760,9 +765,9 @@ void edac_mc_handle_fbd_ue(struct mem_ctl_info *mci,
if (channelb >= mci->csrows[csrow].nr_channels) {
/* something is wrong */
edac_mc_printk(mci, KERN_ERR,
- "INTERNAL ERROR: channel-b out of range "
- "(%d >= %d)\n",
- channelb, mci->csrows[csrow].nr_channels);
+ "INTERNAL ERROR: channel-b out of range "
+ "(%d >= %d)\n",
+ channelb, mci->csrows[csrow].nr_channels);
edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR");
return;
}
@@ -773,21 +778,23 @@ void edac_mc_handle_fbd_ue(struct mem_ctl_info *mci,
/* Generate the DIMM labels from the specified channels */
chars = snprintf(pos, len + 1, "%s",
mci->csrows[csrow].channels[channela].label);
- len -= chars; pos += chars;
+ len -= chars;
+ pos += chars;
chars = snprintf(pos, len + 1, "-%s",
mci->csrows[csrow].channels[channelb].label);
if (edac_mc_get_log_ue())
edac_mc_printk(mci, KERN_EMERG,
- "UE row %d, channel-a= %d channel-b= %d "
- "labels \"%s\": %s\n", csrow, channela, channelb,
- labels, msg);
+ "UE row %d, channel-a= %d channel-b= %d "
+ "labels \"%s\": %s\n", csrow, channela, channelb,
+ labels, msg);
if (edac_mc_get_panic_on_ue())
panic("UE row %d, channel-a= %d channel-b= %d "
- "labels \"%s\": %s\n", csrow, channela,
- channelb, labels, msg);
+ "labels \"%s\": %s\n", csrow, channela,
+ channelb, labels, msg);
}
+
EXPORT_SYMBOL(edac_mc_handle_fbd_ue);
/*************************************************************
@@ -795,25 +802,23 @@ EXPORT_SYMBOL(edac_mc_handle_fbd_ue);
* called to process CE events
*/
void edac_mc_handle_fbd_ce(struct mem_ctl_info *mci,
- unsigned int csrow,
- unsigned int channel,
- char *msg)
+ unsigned int csrow, unsigned int channel, char *msg)
{
/* Ensure boundary values */
if (csrow >= mci->nr_csrows) {
/* something is wrong */
edac_mc_printk(mci, KERN_ERR,
- "INTERNAL ERROR: row out of range (%d >= %d)\n",
- csrow, mci->nr_csrows);
+ "INTERNAL ERROR: row out of range (%d >= %d)\n",
+ csrow, mci->nr_csrows);
edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR");
return;
}
if (channel >= mci->csrows[csrow].nr_channels) {
/* something is wrong */
edac_mc_printk(mci, KERN_ERR,
- "INTERNAL ERROR: channel out of range (%d >= %d)\n",
- channel, mci->csrows[csrow].nr_channels);
+ "INTERNAL ERROR: channel out of range (%d >= %d)\n",
+ channel, mci->csrows[csrow].nr_channels);
edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR");
return;
}
@@ -821,17 +826,16 @@ void edac_mc_handle_fbd_ce(struct mem_ctl_info *mci,
if (edac_mc_get_log_ce())
/* FIXME - put in DIMM location */
edac_mc_printk(mci, KERN_WARNING,
- "CE row %d, channel %d, label \"%s\": %s\n",
- csrow, channel,
- mci->csrows[csrow].channels[channel].label,
- msg);
+ "CE row %d, channel %d, label \"%s\": %s\n",
+ csrow, channel,
+ mci->csrows[csrow].channels[channel].label, msg);
mci->ce_count++;
mci->csrows[csrow].ce_count++;
mci->csrows[csrow].channels[channel].ce_count++;
}
-EXPORT_SYMBOL(edac_mc_handle_fbd_ce);
+EXPORT_SYMBOL(edac_mc_handle_fbd_ce);
/*
* Iterate over all MC instances and check for ECC, et al, errors
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 14:39:21 +0000