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[PATCH] EDAC: Add Fully-Buffered DIMM APIs to core
Eric Wollesen ported the Bluesmoke Memory Controller driver for the Intel 5000X/V/P (Blackford/Greencreek) chipset to the in kernel EDAC model. This patch incorporates those required changes to the edac_mc.c and edac_mc.h core files by added new Fully Buffered DIMM interface to the EDAC Core module. Signed-off-by: eric wollesen <ericw@xmtp.net> Signed-off-by: doug thompson <norsk5@xmission.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -1497,11 +1497,11 @@ int edac_mc_add_mc(struct mem_ctl_info *mci, int mc_idx)
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/* set load time so that error rate can be tracked */
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mci->start_time = jiffies;
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if (edac_create_sysfs_mci_device(mci)) {
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edac_mc_printk(mci, KERN_WARNING,
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if (edac_create_sysfs_mci_device(mci)) {
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edac_mc_printk(mci, KERN_WARNING,
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"failed to create sysfs device\n");
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goto fail1;
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}
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goto fail1;
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}
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/* Report action taken */
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edac_mc_printk(mci, KERN_INFO, "Giving out device to %s %s: DEV %s\n",
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@ -1758,6 +1758,116 @@ void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci, const char *msg)
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EXPORT_SYMBOL_GPL(edac_mc_handle_ue_no_info);
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/*************************************************************
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* On Fully Buffered DIMM modules, this help function is
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* called to process UE events
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*/
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void edac_mc_handle_fbd_ue(struct mem_ctl_info *mci,
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unsigned int csrow,
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unsigned int channela,
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unsigned int channelb,
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char *msg)
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{
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int len = EDAC_MC_LABEL_LEN * 4;
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char labels[len + 1];
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char *pos = labels;
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int chars;
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if (csrow >= mci->nr_csrows) {
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/* something is wrong */
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edac_mc_printk(mci, KERN_ERR,
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"INTERNAL ERROR: row out of range (%d >= %d)\n",
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csrow, mci->nr_csrows);
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edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR");
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return;
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}
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if (channela >= mci->csrows[csrow].nr_channels) {
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/* something is wrong */
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edac_mc_printk(mci, KERN_ERR,
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"INTERNAL ERROR: channel-a out of range "
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"(%d >= %d)\n",
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channela, mci->csrows[csrow].nr_channels);
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edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR");
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return;
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}
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if (channelb >= mci->csrows[csrow].nr_channels) {
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/* something is wrong */
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edac_mc_printk(mci, KERN_ERR,
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"INTERNAL ERROR: channel-b out of range "
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"(%d >= %d)\n",
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channelb, mci->csrows[csrow].nr_channels);
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edac_mc_handle_ue_no_info(mci, "INTERNAL ERROR");
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return;
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}
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mci->ue_count++;
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mci->csrows[csrow].ue_count++;
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/* Generate the DIMM labels from the specified channels */
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chars = snprintf(pos, len + 1, "%s",
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mci->csrows[csrow].channels[channela].label);
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len -= chars; pos += chars;
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chars = snprintf(pos, len + 1, "-%s",
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mci->csrows[csrow].channels[channelb].label);
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if (log_ue)
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edac_mc_printk(mci, KERN_EMERG,
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"UE row %d, channel-a= %d channel-b= %d "
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"labels \"%s\": %s\n", csrow, channela, channelb,
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labels, msg);
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if (panic_on_ue)
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panic("UE row %d, channel-a= %d channel-b= %d "
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"labels \"%s\": %s\n", csrow, channela,
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channelb, labels, msg);
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}
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EXPORT_SYMBOL(edac_mc_handle_fbd_ue);
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/*************************************************************
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* On Fully Buffered DIMM modules, this help function is
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* called to process CE events
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*/
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void edac_mc_handle_fbd_ce(struct mem_ctl_info *mci,
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unsigned int csrow,
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unsigned int channel,
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char *msg)
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{
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/* Ensure boundary values */
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if (csrow >= mci->nr_csrows) {
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/* something is wrong */
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edac_mc_printk(mci, KERN_ERR,
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"INTERNAL ERROR: row out of range (%d >= %d)\n",
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csrow, mci->nr_csrows);
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edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR");
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return;
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}
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if (channel >= mci->csrows[csrow].nr_channels) {
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/* something is wrong */
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edac_mc_printk(mci, KERN_ERR,
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"INTERNAL ERROR: channel out of range (%d >= %d)\n",
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channel, mci->csrows[csrow].nr_channels);
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edac_mc_handle_ce_no_info(mci, "INTERNAL ERROR");
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return;
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}
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if (log_ce)
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/* FIXME - put in DIMM location */
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edac_mc_printk(mci, KERN_WARNING,
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"CE row %d, channel %d, label \"%s\": %s\n",
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csrow, channel,
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mci->csrows[csrow].channels[channel].label,
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msg);
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mci->ce_count++;
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mci->csrows[csrow].ce_count++;
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mci->csrows[csrow].channels[channel].ce_count++;
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}
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EXPORT_SYMBOL(edac_mc_handle_fbd_ce);
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/*
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* Iterate over all MC instances and check for ECC, et al, errors
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*/
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@ -1861,7 +1971,7 @@ static void __exit edac_mc_exit(void)
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debugf0("%s()\n", __func__);
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kthread_stop(edac_thread);
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/* tear down the sysfs device */
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/* tear down the sysfs device */
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edac_sysfs_memctrl_teardown();
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edac_sysfs_pci_teardown();
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}
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@ -123,7 +123,9 @@ enum mem_type {
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MEM_RDR, /* Registered single data rate SDRAM */
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MEM_DDR, /* Double data rate SDRAM */
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MEM_RDDR, /* Registered Double data rate SDRAM */
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MEM_RMBS /* Rambus DRAM */
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MEM_RMBS, /* Rambus DRAM */
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MEM_DDR2, /* DDR2 RAM */
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MEM_FB_DDR2, /* fully buffered DDR2 */
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};
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#define MEM_FLAG_EMPTY BIT(MEM_EMPTY)
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@ -137,6 +139,8 @@ enum mem_type {
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#define MEM_FLAG_DDR BIT(MEM_DDR)
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#define MEM_FLAG_RDDR BIT(MEM_RDDR)
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#define MEM_FLAG_RMBS BIT(MEM_RMBS)
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#define MEM_FLAG_DDR2 BIT(MEM_DDR2)
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#define MEM_FLAG_FB_DDR2 BIT(MEM_FB_DDR2)
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/* chipset Error Detection and Correction capabilities and mode */
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enum edac_type {
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@ -329,6 +333,7 @@ struct mem_ctl_info {
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/* pointer to edac checking routine */
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void (*edac_check) (struct mem_ctl_info * mci);
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/*
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* Remaps memory pages: controller pages to physical pages.
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* For most MC's, this will be NULL.
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@ -453,6 +458,15 @@ extern void edac_mc_handle_ue(struct mem_ctl_info *mci,
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int row, const char *msg);
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extern void edac_mc_handle_ue_no_info(struct mem_ctl_info *mci,
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const char *msg);
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extern void edac_mc_handle_fbd_ue(struct mem_ctl_info *mci,
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unsigned int csrow,
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unsigned int channel0,
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unsigned int channel1,
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char *msg);
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extern void edac_mc_handle_fbd_ce(struct mem_ctl_info *mci,
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unsigned int csrow,
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unsigned int channel,
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char *msg);
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/*
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* This kmalloc's and initializes all the structures.
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