Merge branch 'gfar' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into upstream

1 files changed, 170 insertions, 5 deletions

diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 1b4fc922180..7b622300d0e 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -927,6 +927,57 @@ static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci,
 	return count;
 }
 
+/* memory scrubbing */
+static ssize_t mci_sdram_scrub_rate_store(struct mem_ctl_info *mci,
+					const char *data, size_t count)
+{
+	u32 bandwidth = -1;
+
+	if (mci->set_sdram_scrub_rate) {
+
+		memctrl_int_store(&bandwidth, data, count);
+
+		if (!(*mci->set_sdram_scrub_rate)(mci, &bandwidth)) {
+			edac_printk(KERN_DEBUG, EDAC_MC,
+				"Scrub rate set successfully, applied: %d\n",
+				bandwidth);
+		} else {
+			/* FIXME: error codes maybe? */
+			edac_printk(KERN_DEBUG, EDAC_MC,
+				"Scrub rate set FAILED, could not apply: %d\n",
+				bandwidth);
+		}
+	} else {
+		/* FIXME: produce "not implemented" ERROR for user-side. */
+		edac_printk(KERN_WARNING, EDAC_MC,
+			"Memory scrubbing 'set'control is not implemented!\n");
+	}
+	return count;
+}
+
+static ssize_t mci_sdram_scrub_rate_show(struct mem_ctl_info *mci, char *data)
+{
+	u32 bandwidth = -1;
+
+	if (mci->get_sdram_scrub_rate) {
+		if (!(*mci->get_sdram_scrub_rate)(mci, &bandwidth)) {
+			edac_printk(KERN_DEBUG, EDAC_MC,
+				"Scrub rate successfully, fetched: %d\n",
+				bandwidth);
+		} else {
+			/* FIXME: error codes maybe? */
+			edac_printk(KERN_DEBUG, EDAC_MC,
+				"Scrub rate fetch FAILED, got: %d\n",
+				bandwidth);
+		}
+	} else {
+		/* FIXME: produce "not implemented" ERROR for user-side.  */
+		edac_printk(KERN_WARNING, EDAC_MC,
+			"Memory scrubbing 'get' control is not implemented!\n");
+	}
+	return sprintf(data, "%d\n", bandwidth);
+}
+
 /* default attribute files for the MCI object */
 static ssize_t mci_ue_count_show(struct mem_ctl_info *mci, char *data)
 {
@@ -1033,6 +1084,9 @@ MCIDEV_ATTR(ce_noinfo_count,S_IRUGO,mci_ce_noinfo_show,NULL);
 MCIDEV_ATTR(ue_count,S_IRUGO,mci_ue_count_show,NULL);
 MCIDEV_ATTR(ce_count,S_IRUGO,mci_ce_count_show,NULL);
 
+/* memory scrubber attribute file */
+MCIDEV_ATTR(sdram_scrub_rate,S_IRUGO|S_IWUSR,mci_sdram_scrub_rate_show,mci_sdram_scrub_rate_store);
+
 static struct mcidev_attribute *mci_attr[] = {
 	&mci_attr_reset_counters,
 	&mci_attr_mc_name,
@@ -1042,6 +1096,7 @@ static struct mcidev_attribute *mci_attr[] = {
 	&mci_attr_ce_noinfo_count,
 	&mci_attr_ue_count,
 	&mci_attr_ce_count,
+	&mci_attr_sdram_scrub_rate,
 	NULL
 };
 
@@ -1442,11 +1497,11 @@ int edac_mc_add_mc(struct mem_ctl_info *mci, int mc_idx)
 	/* set load time so that error rate can be tracked */
 	mci->start_time = jiffies;
 
-        if (edac_create_sysfs_mci_device(mci)) {
-                edac_mc_printk(mci, KERN_WARNING,
+	if (edac_create_sysfs_mci_device(mci)) {
+		edac_mc_printk(mci, KERN_WARNING,
 			"failed to create sysfs device\n");
-                goto fail1;
-        }
+		goto fail1;
+	}
 
 	/* Report action taken */
 	edac_mc_printk(mci, KERN_INFO, "Giving out device to %s %s: DEV %s\n",
@@ -1703,6 +1758,116 @@ void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, const char *msg)
 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)
+{
+	int len = EDAC_MC_LABEL_LEN * 4;
+	char labels[len + 1];
+	char *pos = labels;
+	int chars;
+
+	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);
+		edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR");
+		return;
+	}
+
+	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);
+		edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR");
+		return;
+	}
+
+	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);
+		edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR");
+		return;
+	}
+
+	mci->ue_count++;
+	mci->csrows[csrow].ue_count++;
+
+	/* Generate the DIMM labels from the specified channels */
+	chars = snprintf(pos, len + 1, "%s",
+			 mci->csrows[csrow].channels[channela].label);
+	len -= chars; pos += chars;
+	chars = snprintf(pos, len + 1, "-%s",
+			 mci->csrows[csrow].channels[channelb].label);
+
+	if (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);
+
+	if (panic_on_ue)
+		panic("UE row %d, channel-a= %d channel-b= %d "
+				"labels \"%s\": %s\n", csrow, channela,
+				channelb, labels, msg);
+}
+EXPORT_SYMBOL(edac_mc_handle_fbd_ue);
+
+/*************************************************************
+ * On Fully Buffered DIMM modules, this help function is
+ * called to process CE events
+ */
+void edac_mc_handle_fbd_ce(struct mem_ctl_info *mci,
+			   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);
+		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);
+		edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR");
+		return;
+	}
+
+	if (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);
+
+	mci->ce_count++;
+	mci->csrows[csrow].ce_count++;
+	mci->csrows[csrow].channels[channel].ce_count++;
+}
+EXPORT_SYMBOL(edac_mc_handle_fbd_ce);
+
+
 /*
  * Iterate over all MC instances and check for ECC, et al, errors
  */
@@ -1806,7 +1971,7 @@ static void __exit edac_mc_exit(void)
 	debugf0("%s()\n", __func__);
 	kthread_stop(edac_thread);
 
-        /* tear down the sysfs device */
+	/* tear down the sysfs device */
 	edac_sysfs_memctrl_teardown();
 	edac_sysfs_pci_teardown();
 }